The process analysis asks you to list the composition of the pump production unit

Shanghai Sunshine Pump Manufacturing Co., Ltd. is located in Jinshan Industrial Park, Shanghai, which is a well-known large-scale diversified enterprise integrating research, development, production, sales and service in China, with a registered capital of 80 million yuan. The leading products include: screw pumps, diaphragm pumps, submersible pumps, magnetic pumps, sewage pumps, chemical pumps, multistage pumps, self-priming pumps, gear oil pumps, metering pumps, sanitary pumps, vacuum pumps, submersible pumps, rotary lobe pumps and other categories.

The products have been recognized by various professional certifications and customers with superior performance and excellent quality. The company has a number of pump experts and all kinds of senior engineers, continuous development and manufacturing, upgraded products have come out every year. The suction chamber is an important part of the sewage pump, and its role is to direct the liquid into the impeller.

The suction chamber is usually snail-shaped and is capable of holding liquids....

Apparent ** refers to the ** act that the actor does not have the right to, but because of his own behavior, it is enough to make the bona fide third party believe that he has the right to **, and the act of the actor is carried out with the bona fide third party and the person bears the legal consequences. Apparently, ** is essentially no right**, which is a kind of generalized lack of power**. Therefore, in the case of apparent circumstances, stipulating that the respondent bears the legal consequences of the apparent act is more conducive to protecting the interests of the bona fide third party, maintaining the security of the transaction, and thereby strengthening the credibility of the system.

Hello, Shanghai Sunshine Pump, a manufacturer of metal magnetic drive chemical process pumps, hope to help you!

The best manufacturers to do are in Jiangsu and Dalian.

Process pump is a general term for various types of pumps in the chemical production process. There are many varieties of process pumps, which can be divided into vane pumps according to their operating principles, such as centrifugal pumps, axial flow pumps, mixed-flow pumps, partial flow pumps, vortex pumps, etc.; Positive displacement pumps, such as reciprocating pumps (including piston pumps, piston pumps, diaphragm pumps, etc.); Rotary pumps (including screw pumps, liquid ring pumps, gear pumps, sliding vane pumps, roots pumps, radial piston pumps, etc.); Other types of pumps, such as according to the production process or product characteristics, can be divided into high-pressure methylamine pumps, cryogenic pumps, phosphoric acid slurry pumps, etc. In chemical or petrochemical production, the pump works under high temperature, low temperature (or ultra-low temperature), high pressure, flammable, explosive, toxic and strong corrosive media, and some also work under the conditions of high inlet pressure, high head, high viscosity, small flow and high cavitation, which puts forward quite strict requirements for the performance of chemical pumps, especially for corrosion resistance, not allowing leakage (for toxic media) and wear resistance.

In order to meet the special requirements of chemical production, we also specialize in the production of special chemical pumps in the chemical machinery industry, such as plastic pumps, glass pumps, ceramic pumps, graphite pumps, shielded pumps, magnetic pumps, impurity pumps, etc. The medium that needs to be conveyed in the production process of phosphate fertilizer mainly includes phosphate slurry, phosphoric acid slurry, various filtrates, concentrated phosphoric acid, dilute phosphoric acid, concentrated sulfuric acid, dilute sulfuric acid and fluorosilicic acid, etc., and the pump is very susceptible to medium corrosion or corrosion and erosion and wear.

Biventricles and biatria alternately diastole.

Blood is from the right ventricle - lung - left atrium - left ventricle - whole body - right atrium.

First there is left ventricular ejection, blood through the mitral valve to the left atrium, through the systemic blood to the right atrium, then through the pulmonary circulation, blood to the left atrium, mitral valve ejection to the left ventricle....And so on and so forth.

The question is not simple, the first one is feedback, what feedback is used, speed?? The second is WICC

Suggestion: First of all, follow the idea of relays. In converting the relay circuit into a PLC program, hehe, change it yourself. Then, the problem of WICC configuration is dealt with.

This program is very simple, it's just that there is no step7 software on this computer right now. I can tell you about the process. For the wincc program, it is a little more troublesome.

S7 is not very familiar, to give you a rough T-shaped diagram, for reference.

Input: 00 on, 1 pump, 01 stop, 02 heartbeat.

Output: 10 pumps 1 11 pumps 2

10 t1---/ /---#*)t1 02 01 11---/ /---/ /---/\/---/ 11 /

Suppose i1 is the opening command of the PLC feed pump 1, i2 is the feedback signal of the water pump 1 to be turned on, m1 is the water pump 1, and m2 is the water pump 2

i1 activates m1, m1 activates delay relay k1, k1 activates the detection pump 1 after a few seconds of delay, if the water pump 1 is detected to be running, the i2 signal is self-locking m1, m1 keeps running, if i2 is 0 signal, that is, the water pump 1 is not actually running, i2 activates m2, and disconnects m1 at the same time

wincc monitoring is actually to put these signals, for example, to show the normal operation of pump 1, it must meet the needs of i1, m1, i2 is 1, otherwise it is displayed off, if i1, m1 is 1, i2 is 0, then the pump 1 is faulty.

The above is the basic idea for reference.

1. Design requirements.

1. The control system is powered on (on) and the indicator light PL5 is on.

2. Press and hold the start-stop control button PB2, the No. 1 pumping machine MC1 is running, and the indicator light PL1 is on at the same time. When PB2 is released, Pumping Machine No. 1 stops.

3. When you press and hold the control button PB2 again, change the No. 2 pumping machine MC2 to run, and the indicator light PL2 will be on at the same time. When PB2 is released, Pump 2 stops.

4. When you press and hold PB2 for the third time, you will change back to No. 1 pumping machine MC1 and the indicator light PL1 will be on. In this way, the two pumps are operated alternately.

5. If you press and hold the button PB1 at the end of the shutdown during operation, the two pumps will stop and the indicator light PL5 will be extinguished at the same time. 6. When any thermal relay is running, the corresponding alarm indicator PL2 or PL3 will be on, and the buzzer BZ will stop after 10S intermittently. The thermal relay action cuts off the pump, and at the same time it is connected to another pump to make it run until the control button PB2 is released.

7. Before the thermal relay is reset, only the normal pumping machine is controlled, and every time you press and release PB2 once, the pumping machine runs and stops acting once.

8. The two thermal relays are in action, the pump stops, the alarm indicator PL2 and PL3 are lit, and the buzzer BZ rings intermittently (,, until the alarm elimination button PB3 is pressed, the buzzer BZ can be turned off.

9. After the thermal relay is reset, PL2 and PL3 are extinguished and the normal operation state is restored.

2. Programming

1. Input point design: shutdown button PB1: X0; start-stop control button PB2: X1; Alarm elimination button pb3:

x2;No. 1 Pumping Machine Thermal Relay HR1: X3; No. 2 Pumping Machine Thermal Relay HR2: X4; Description:

The above buttons are all unlockless buttons. 2. Output point design.

Pumping machine No. 1 MC1: Y0; No. 1 pumping machine indicator PL1: Y2; Pumping machine No. 2 MC2:

y1;No. 2 pumping machine indicator PL2: Y3; No. 1 pumping machine thermal relay alarm indicator PL3: Y4; No. 2 Pumping Machine Thermal Relay Alarm Indicator PL4:

y5;Power indicator PL5: Y6;

Take a look at the book "Introduction to PLC" written by Wang Zhe, this kind of problem is solved.

Your question is more general, because chemical process pumps are divided into many types, and there are a variety of operating conditions, which cannot be generalized.

Here are some of the most typical and commonly used pump types at the point of pump design, which we hope will help you. If the design point of the pump is deviated, no specific data can be provided.

1. Vane pump.

Centrifugal pumps, axial flow pumps.

Vortex pump 2, positive displacement pump.

Reciprocating pump rotor pump.

When the working process of the reverse pump is pushed back and forth by the main oil cylinder, the S valve (C valve or skirt valve or gate valve) swings in the opposite direction, so at this time, the concrete sucked by the piston in the concrete cylinder is the ash in the conveying pipe, which is just the opposite of the positive pump (the positive pump sucks the concrete of the hopper and then pushes it into the hopper to achieve slurry).

Function: The reverse pump is used when pumping concrete, the pumping pressure reaches more than 25MPa, and the concrete pipe does not produce ash, which can be understood as the precursor of pipe blockage, at this time, the reverse pump should be used immediately to suck out the concrete from the conveyor pipe and push it into the hopper, so as to prevent the occurrence of pipe blockage.

Theoretically, it can solve the problem of pipe blockage, but if the pipe is blocked seriously before you reverse the pump and then the pump, the back and forth pump can no longer solve the problem of pipe blockage, and the worst solution is to dismantle the pipe one by one, if the pressure is very high, it will only aggravate the pipe blockage.

Please give me a little more points.

In the case of blocked pipes, the ash is suctioned upstairs, and the reverse pump is sucked down.

If you keep pumping back some mortar, I've been pumping it for seven years.