What is the practical significance of the application of rubber soft joints?

Rubber soft joint is a product independently designed, developed and manufactured by Tianjin Yibiao Valve, which is composed of inner and outer rubber, cord layer and steel wire ring tubular rubber parts, which are combined with metal flanges or parallel joint loose sleeves after vulcanization. This product can reduce vibration and noise, and can compensate for thermal expansion and contraction caused by temperature changes, and is widely used in various piping systems. Connections with pumps and valves, fire-fighting equipment, pipes with large vibrations, and pipes with frequent changes in cold and heat.

It is mainly used for the lifting and transportation of raw water and sewage, the feed water and cooling circulating water of thermal power plants, the pipeline transportation of chemical substances in the metallurgical industry, condensate and chemical industry, the cooling and dilution of the petrochemical industry and the flexible connection between long and short distance pipelines in other industries. Because rubber has high wear resistance, it is also suitable for low-temperature conveying of granular, powdery and vapor in all industries.

The uses of rubber soft joints include displacement compensation, vibration isolation, noise reduction, elimination of electrical corrosion, protection against transient forces and impact forces, and relief of pipeline stress. The main uses are displacement compensation and vibration isolation. Due to its large free deflection and displacement, it can also be used in the following applications:

1. Expansion and contraction caused by temperature differences.

2. Displacements caused by buildings, structures or ground subsidence.

3. The eccentric pipe with the center of the connecting pipe does not match.

4. Bridging the error caused by inaccurate pipeline cutting.

5. It is purely used for installation, disassembly and maintenance.

6. Solve the leakage phenomenon caused by the rigid connection of both ends of the fan coil unit.

According to the anchor screws to connect them to each other, so that they become a whole, and there is a certain deviation, so that in the assembly and protection link can be adjusted according to the specific assembly specifications and models, in actual operation, the tangential thrust can be transmitted to all pipelines. This not only improves the work efficiency, but also has a certain guarantee effect on the pump, gate valve and other pipeline industrial equipment. For rubber soft joints, good friends only know one but don't know the other, and they all know that rubber soft joints are pumps.

The new products of globe valves, pipelines and other industrial equipment connected with pipelines are connected according to the anchor screws to make it a whole and have a certain deviation, so that they can be adjusted according to the specifications and models of the specific group, and in actual operation, the tangential propulsion force can be returned to all pipelines.

But what the friends don't know is that among the many materials, the only ones that are not afraid of surface dents may be rubber soft joints. Nowadays, in many cities, due to a lot of pumping of ground water, concrete cracks have occurred on everyone's roads. With the change of time, the increase in the intensity of exercise will definitely make the land subsidence more serious.

In the case that there is no way to avoid, there is only some raw materials, and under the spring shape of ground subsidence, it is not easy to crack the raw materials and the ground because the raw materials are not strong.

Rubber soft joints are a kind of pipe connections with high elasticity, high sealing, material resistance to rubber belt number and weather resistance. Rubber soft joints are generally composed of an inner rubber layer, a textile beam head layer (the reinforcing layer has a double-layer rubber scraping cotton cord cloth), a medium rubber layer, a layman's rubber layer, a well-known structural reinforced metal ring or steel wire ring, and a composite rubber soft joint composed of a metal material flange or a parallel surface connector loose sleeve after being formed by high temperature and high-pressure vulcanized rubber.

Introduction to the main materials of Songjiang rubber soft joints; 1. Natural rubber (NR) is mainly rubber hydrocarbons (polyisoprene), containing a small amount of protein, water, resin acid, sugar and inorganic salts. It has large elasticity, high tensile strength, excellent tear chain crack resistance and electrical insulation, good wear resistance and hand slow drought resistance, good processability, easy to bond with other materials, and is better than many in terms of comprehensive performance.

Rubber soft jointsRubber soft joints are used for flexible connections between metal pipes, and the hollow rubber liquid products made of this are bright. Rubber soft joints are also known as rubber pipe soft joints, flexible rubber joints, rubber soft joints, flexible rubber joints, high-pressure rubber joints, rubber shock absorbers, etc. According to the connection method, it is divided into loose sleeve flange type, fixed flange type and threaded type 3

Rubber soft joints can also be called flexible finger flex rubber soft joints, rubber soft joints, slippery soft joints, flexible rubber joints, rubber expansion joints, shock absorbers, shock absorbers, etc., which are highly elastic.

1. Natural rubber (NR) is mainly rubber hydrocarbons (polyisoprene), containing a small amount of protein, water, resin acid, sugar and inorganic salts. The pin has large elasticity, high tensile strength, excellent tear resistance and electrical insulation, good wear resistance and drought resistance, good processing, and is easy to bond with other materials.

There are six characteristics of rubber soft joints: 1. Rubber soft joints can greatly reduce the vibration and noise of the pipeline system, and can fundamentally solve the problems of interface displacement, axial expansion and misalignment of various pipelines. 2. According to different materials, flexible single ball rubber joints can be made into acid-resistant, alkali-resistant, corrosion-resistant, oil-resistant, heat-resistant and other varieties, and can adapt to a variety of media and environments.

3. The material is polar rubber, with good sealing, light weight, convenient installation and maintenance, and long service life, but avoid contact with sharp metal instruments to avoid puncturing the sphere. 4. If the overhead is used, it can be equipped with an elastic bracket, and the bolt should be tightened diagonally during installation. 5. If the pressure of the pipeline is too high, the limit bolts should be used to connect the flanges at both ends.

6. The flange connection standard standard can be separately explained for the working pressure grade;

Soft. Strong plasticity.

Easy to seal.

Rubber soft joints are different in various connection methods. According to the interface mode, the rubber soft joint can be divided into the clamp check valve connection and the clamp joint connection. So what's the difference between them?

Flange connection rubber soft joints have the advantages of high hardness, low noise, good fire resistance, long service life, and excellent flexibility and shockproof characteristics of the joint, but in specific projects, it is found that the installation indoor space of the socket interface position is relatively large, the pipe body is heavier, and the loss of stainless steel plates is more, especially in the drainage of the same layer, the relative height is insufficient and the actual operation is difficult.

The groove connection rubber soft joint has high hardness, low noise, good fire fighting function, long service life, excellent connection winding and seismic characteristics, and has high utilization rate of engineering construction and pipe fittings, which is conducive to pipeline cleaning, reducing the frequency of pressure test, reducing the construction period, and improving social and economic benefits. In addition, the socket of this type of jack is tightened on the side with screws, which prevents the rigid socket boss of the socket from being easy to break and the screws against the corner of the wall cannot be determined, and has the advantages of simple use. In addition, because the length of the pipe pipe is 3m, the total number of connectors in it is greatly reduced and any length can be extracted according to the need, which saves a lot of pipe fittings, cost measures and costs.

Ribbed stainless steel clamps are used for bearingless ports and reducers. The lining silicone rubber ring has flexible connection, high seismic rating, and good sealing function. The rubber soft joints allow oscillation in a certain area and are not prone to water leakage.

1. Installation of the rubber joint of the thread connection:

Before installation, the two ends of the pipe fittings that need to be connected are flattened on the horizontal plane, and the thread rubber joint is screwed on one of the pipe fittings during installation, and then the other end of the pipe fittings is screwed, which is always kept on the horizontal plane to prevent the uneven force from tearing the rubber ball during the installation process, and then tighten the silk Mingqing Wang buckle with a hand or wrench, and finally fix the silk old buckle rubber joint and the pipe fittings at both ends on the object that is not easy to stretch or twist.

Second, the installation of flange connection rubber joints:

Before the installation of the flange rubber joint, the two ends of the pipe fittings that need to be connected are flattened on the horizontal plane, and the fixed end pipe fittings are flattened during installation, and then the flange on the rubber joint is rotated to align the flange hole around, and then the flange of the other end of the pipe fitting is horizontally aligned with the flange on the rubber joint, and the flange on the rubber joint is rotated to make the flange mouth face to each other, and the screw is screwed on the nut and the three are closely connected in the horizontal direction to prevent the sealing from being tight.

3. Installation of clamp connecting rubber joints:

Clamp rubber joint, using clamp to replace flange and bolt, installation can be the clamp rubber joint of the two nozzles respectively on the pipe to be connected on the pipe to be connected, through the clamp rubber joint and pipeline fixed connection.

Rubber joints are widely used, and the corresponding types are also diverse, and different types have different uses and characteristics, but according to the current market sales type, it can generally be divided into 6 types, as follows:

Brother digging potato 1, buckle groove rubber joint.

That is, on the flat welded flange, according to the size of the soft joint ball, a groove can be buckled on the soft joint, which can not only greatly reduce the vibration and noise of the pipeline system, but also fundamentally solve the problems of interface displacement, axial expansion and misalignment of various pipelines.

2. Flanging rubber joints.

Generally designed under high pressure, unlike the buckle groove, the edge of this soft joint covers the part of the flange and a hole is punched in the edge of the rubber.

3. Negative pressure resistant rubber joints.

That is, a steel ring is added to the inner edge of the rubber soft joint to prevent the rubber soft joint from being sucked and deformed at the inlet of the pump due to too much suction.

4. High-pressure resistant rubber joints.

The method of reinforcing rubber is adopted, and steel wire is added to the body of rubber, or other reinforcing materials are added, so that the strength of rubber is increased, so as to resist the impact of high pressure.

5. Anti-pull-off limit rubber joint.

That is, at the edge of the flange, the lug plate with the limit function is welded and hail, and the upper and lower correspond and are passed through with bolts, so as to achieve the limit function.

6. Lined with PTFE rubber joints.

That is, it is used in a medium with high strength corrosiveness, which is higher than the ability of ordinary rubber to withstand.

There are not many differences between rubber joints and rubber soft joints in terms of appearance design, and the flange is higher than China's specifications in terms of corrosion prevention and mutual compatibility. The cost performance is too good to compare. In terms of service life, there is no big difference in the application of the natural environment, but the price is close to half of the difference.

Rubber joints are all used in sound reduction, sound insulation and noise reduction, shock absorption, but as a flange of the connecting equipment is a different place, the middle section of the hail blue plate is a diameter flange, the key is used in a firm rubber joint, the diameter of the flange plate is a slope can be a good touch of the rubber joint, the surface layer in order to better ensure the maintenance of the rubber ball in the past, the telescopic effect is not broken by the edge of the flange, which is beneficial to increase the service life, especially in the use of large-diameter pipelines.

Rubber joints are generally air-blown film and mechanical sail holding equipment film, quietly the first mechanical film is the previous practice, his inner cavity is spliced together piece by piece, very easy to distinguish, most of the quality can not be qualified. With the rapid development trend of science and technology, the rapid rise of the field of pipelines, we have our own, but also from other imports, in the process of selection must be based on your requirements to buy the suitable.

There are two bearings inside the metal soft joint, which is stable and reliable, strong and flexible, and the friction recognition coefficient is small, so it can run at high speed. Rubber soft joints are typically used in equipment that conveys hydraulic media to be violently dismantled, such as hydraulic actuators on metal soft joints. After being installed on the moving ring assembly or the static ring assembly, the rubber soft joint should be reasonable and should not be bent so that the hair is in a cross-sectional state.

The gland should be installed with a metal soft connector or a drilling machine, and the metal soft joint should be padded with clean paper or cloth to avoid damage to the sealing ring.