Pressure stabilizing protection device for booster pump

Abstract

The utility model discloses a booster pump pressure stabilizing protection device which comprises storage tanks, a booster pump and a Y-shaped filter, the storage tanks are at least divided into a first storage tank and a second storage tank, the lower portions of the two storage tanks are communicated through a middle communicating ball valve, the bottoms of the two storage tanks are respectively provided with a blow-down valve, and the Y-shaped filter is connected with the blow-down valve. Wherein a water inlet and outlet pipe with an electromagnetic valve is arranged on the pipe wall of the first storage tank, two dual-redundancy upper water level floating ball valves which are arranged in parallel are arranged in the upper portion of the first storage tank, and two dual-redundancy lower water level floating ball valves which are arranged in parallel are arranged in the lower portion of the first storage tank. The lower part of the second storage tank is communicated with the booster pump through a ball valve and a Y-shaped filter; the lower water level floating ball valve is connected with the booster pump in an interlocking mode to control closing of the booster pump, and the upper water level floating ball valve is in linkage with the electromagnetic valve.

Description

Technical Field

[0001] The utility model relates to a pressure stabilizing and protecting device for a booster pump. Background Art

[0002] At present, in the process of sewage treatment, recycled water is an important water source for each treatment workshop, such as desludging room, fine screen, membrane screen, etc. A large amount of water is needed to clean the equipment to ensure the normal operation of the equipment. However, in the entire recycled water system, the flow and pressure of the recycled water system fluctuate due to factors such as large scale, long distance and seasonal greening water use of each treatment workshop. In order to avoid energy loss, the selection of recycled water reuse pumps is generally based on the average water consumption of the sewage treatment plant. In daily use, overload water use often occurs, causing flow and pressure fluctuations in the recycled water system, resulting in cavitation and unstable flow and pressure in the booster pump, which not only damages the booster pump, but also affects the cleaning equipment at the back end to varying degrees due to changes in flow and pressure. Summary of the invention

[0003] The purpose of the utility model is to provide a booster pump voltage stabilizing protection device, which can eliminate the influence of the fluctuation of the reclaimed water reuse system on the booster pump and ensure the smooth progress of production.

[0004] The purpose of this device is achieved as follows: a booster pump pressure stabilizing protection device, including a storage tank, a booster pump and a Y-type filter, the storage tank is divided into at least two, a No. 1 storage tank and a No. 2 storage tank, the lower parts of the two storage tanks are connected through an intermediate connecting ball valve, and sewage valves are respectively arranged at the bottom of the two storage tanks, wherein the No. 1 storage tank wall is provided with an inlet and outlet water pipe with a solenoid valve, the upper part of the No. 1 storage tank is provided with two double redundant upper water level float valves arranged in parallel, and the lower part of the No. 1 storage tank is provided with two double redundant lower water level float valves arranged in parallel, and the lower part of the No. 2 storage tank is connected to the booster pump through a ball valve and a Y-type filter; the lower water level float valve is interlocked with the booster pump to control the shutdown of the booster pump, and the upper water level float valve is linked to the solenoid valve.

[0005] This device uses two connected storage tanks to achieve the water storage function, and calculates the design capacity of the storage tank according to the fluctuation degree of the recycled water volume. When the equipment is operating normally, the intermittent operation time of the equipment can be used to supplement the flow, avoiding the impact of the fluctuation of the recycled water flow on the booster pump, thereby achieving the purpose of protecting the booster pump. Secondly, the Y-type filter and large storage tank in the system can be used to filter and precipitate the recycled water to ensure that the cleaning equipment using the recycled water at the back end is not blocked, further improving the efficiency of recycled water reuse.

[0006] Compared with the prior art, the advantages of the utility model are: 1. The equipment has a simple structure and a long service life. 2. The system has high operating stability. 3. The equipment investment is small. 4. It is easy to repair and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the connection structure of the utility model.

[0008] In the figure: 1. Storage tank No. 1; 2. Storage tank No. 2; 3. Solenoid valve; 4. Inlet and outlet pipes; 5. Intermediate connecting ball valve; 6. Lower water level float valve; 7. Upper water level float valve; 8. Drain valve; 9. Ball valve; 10. Y-type filter; 11. Booster pump. DETAILED DESCRIPTION

[0009] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0010] In the above-mentioned Figure 1 In: A booster pump pressure stabilizing protection device, including a storage tank, a booster pump and a Y-type filter, wherein the storage tank is divided into at least two, a No. 1 storage tank 1 and a No. 2 storage tank 2, the lower parts of the two storage tanks are connected through an intermediate connecting ball valve 5, and sewage valves 8 are respectively arranged at the bottom of the two storage tanks, wherein an inlet and outlet water pipe 4 with a solenoid valve 3 is arranged on the pipe wall of the No. 1 storage tank, two upper water level float valves 7 arranged in parallel with dual redundancy are arranged in the upper part of the No. 1 storage tank 1, and two lower water level float valves 6 arranged in parallel with dual redundancy are arranged in the lower part of the No. 1 storage tank, and the lower part of the No. 2 storage tank 2 is connected to the booster pump 11 through a ball valve 9 and a Y-type filter 10; the lower water level float valve 6 is interlocked with the booster pump 11 to control the shutdown of the booster pump, and the upper water level float valve 7 is linked with the solenoid valve 3.

[0011] The water replenishment process of this device is as follows:

[0012] First, a certain amount of water needs to be injected into the No. 1 and No. 2 storage tanks 1 and 2 to make the lower water level float valve 6 float and release the interlock of the booster pump 11. At this time, the upper water level float valve 7 and the booster pump 11 start to be powered on, and then the solenoid valve 3 opens to replenish water. The two storage tanks 1 and 2 are connected through the intermediate connecting ball valve 5 between the No. 1 storage tank 1 and the No. 2 storage tank 2. When the water level rises to the highest level, the upper water level float valve 7 controls the solenoid valve 3 to close, and the system stops replenishing water. When the booster pump 11 starts to work and lowers the water level to below the upper water level, the upper water level float valve 7 controls the solenoid valve 3 to open, and the system starts replenishing water, thereby realizing the automatic water replenishment process of the system.

[0013] The protection and control systems are as follows:

[0014] 1. Booster pump 11 protection system: The lower water level float valve 6 adopts dual redundant parallel control mode. When the water level is lower than the minimum limit, the lower water level float valve 6 will control the booster pump 11 to stop working, avoiding damage to the booster pump due to untimely water replenishment or abnormality of the lower water level float valve 6, thereby achieving the purpose of protecting the booster pump 11.

[0015] 2. Water inlet protection system: The upper water level float valve 7 also adopts a dual redundant parallel mode. When the water level is higher than the upper limit, when any one or both of the upper water level float valves 7 are energized, the solenoid valve 3 will be closed to prevent the system from being unable to stop abnormal water replenishment due to the use of a single float valve.

[0016] The filtration and sedimentation functions are implemented as follows:

[0017] 1. Filtration function: The Y-type filter 10 can filter out most of the impurities in the recycled water. At the same time, a filter of corresponding filtration level can be selected according to system needs to improve the water quality of the back-end water.

[0018] 2. Sedimentation and sewage discharge: Through two large interconnected storage tanks, the reclaimed water passes through the No. 1 storage tank to buffer and stabilize the flow, and then enters the No. 2 storage tank to achieve sedimentation. The effects of the No. 1 and No. 2 storage tanks can reduce the fluctuation caused by the frequent replenishment of the flow in the tank body, and play a certain sedimentation role on the reused reclaimed water. The impurities after precipitation can be cleaned and discharged through the sewage valve 8.

Claims

1. A booster pump pressure stabilizing protection device, comprising a storage tank, a booster pump and a Y-type filter, characterized in that: The storage tanks are divided into at least two, a No. 1 storage tank and a No. 2 storage tank. The lower parts of the two storage tanks are connected through an intermediate connecting ball valve. Drain valves are respectively arranged at the bottom of the two storage tanks. An inlet and outlet water pipe with a solenoid valve is arranged on the pipe wall of the No. 1 storage tank. Two upper water level float valves arranged in parallel with dual redundancy are arranged in the upper part of the No. 1 storage tank. Two lower water level float valves arranged in parallel with dual redundancy are arranged in the lower part of the No. 1 storage tank. The lower part of the No. 2 storage tank is connected to the booster pump through a ball valve and a Y-type filter; the lower water level float valve is interlocked with the booster pump to control the shutdown of the booster pump, and the upper water level float valve is linked to the solenoid valve.

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