Water ring type vacuum pump set

Abstract

The utility model relates to a water-ring vacuum pump set, which belongs to the technical field of water saving of vacuum pumps and comprises water-ring vacuum pumps, a plate radiator, a first pump water inlet pipeline, a first pump air outlet pipeline, a first plate water outlet pipeline, a second plate water outlet pipeline, a first tank water outlet pipeline, a PLC (programmable logic controller) electric control system and a cooling filter tank. An air outlet of the connected water ring vacuum pump is connected with the plate radiator through a water outlet pipeline, the plate radiator is communicated with the cooling filtering tank, water vapor generated in the water ring vacuum pump is cooled through the plate radiator, and part of the water vapor is brought into the cooling filtering tank to be condensed. After condensed water is cooled and filtered by the cooling filtering tank, one part of the water enters the plate type radiator, and the other part of the water flows back into the water ring type vacuum pump to supplement sealing liquid in the pump. The vacuum pump set solves the problems that impurities are generated in water of the water ring type vacuum pump, water resources are wasted, and the vacuum rate is affected by temperature rise during cyclic utilization.

Description

Technical Field

[0001] The utility model belongs to the technical field of water-saving of vacuum pumps, in particular to a water-ring vacuum pump group. Background Art

[0002] The water ring vacuum pump requires continuous liquid seal water during operation. The water ring vacuum pump will generate heat during operation, which will make the working water ring heat up. At the same time, part of the water and gas will be discharged together. Therefore, during the operation, the water ring vacuum pump must be continuously supplied with water to cool and replenish the water consumed in the pump to meet its working requirements. The water ring vacuum pump sucks gas during operation, and there will be a small amount of impurities in the gas. The wastewater contains solid insoluble matter, microorganisms, viscous matter, S2-, Zn2+, elemental sulfur, etc. The water quality is very poor. The waste dissolves into the water in the water ring vacuum pump to form wastewater. If the wastewater is not treated, it will seriously pollute the water ring vacuum pump and the heat dissipation device. At present, most companies discharge wastewater as wastewater, which increases the pressure of subsequent environmental protection treatment, that is, increases the production and operation costs; it causes waste of water resources and increases production costs.

[0003] When the water ring vacuum pump is running, the working fluid should maintain a stable low temperature requirement, maintained at 20-25 ° C, the lower the better, but it is difficult to achieve in practice. During long-term operation, the working fluid temperature rises to 50 ° C, resulting in a decrease in the vacuum pump's extraction efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a water ring vacuum pump group, which forms a water circulation system through a setting pipe, cools water vapor through a plate radiator and a cooling filter tank to form condensed water, thereby lowering the temperature of the circulating water, reducing the waste of water resources, and improving the extraction efficiency of the vacuum pump. At the same time, a PLC electronic control system is used to perform intelligent and precise control of the pipeline, thereby improving production efficiency.

[0005] In order to solve the above technical problems, the utility model provides a water ring vacuum pump group, comprising: a water ring vacuum pump, a plate radiator, a pump water inlet pipeline 1, a pump air outlet pipeline 1, a plate water outlet pipeline 1, a plate water outlet pipeline 2, a tank water outlet pipeline 1, a PLC electronic control system and a cooling filter tank, the water ring vacuum pump is provided with a liquid level sensor, and the water ring vacuum pump is connected in series, the air outlet of the connected water ring vacuum pump is connected to the plate radiator via the pump air outlet pipeline 1, the pump air outlet pipeline 1 is provided with a gate valve 1, the plate radiator is connected to the cooling filter tank, part of the water after cooling and filtration enters the plate radiator to cool the water vapor, and part enters the water ring vacuum pump to replenish the water ring vacuum pump.

[0006] Preferably, the air outlet of the water ring vacuum pump is connected to the air inlet of the plate radiator through a pump outlet pipeline 1, and the pump outlet pipeline 1 adopts a steam heat dissipation pipe, and a plurality of "trumpet"-shaped air nozzles with backward openings are provided in the steam heat dissipation pipe, and a liquid leakage port is provided below the air nozzle, and a surrounding "T" heat dissipation fin is provided on the outside of the steam heat dissipation pipe.

[0007] Preferably, the water outlet of the plate radiator is connected to the cooling filter tank through the plate water outlet pipeline 1, and the plate water outlet pipeline 1 is provided with a check valve and an intermittent pump 1. The air outlet of the plate radiator is connected to the cooling filter tank through the plate water outlet pipeline 2, and the plate water outlet pipeline 2 adopts a steam heat dissipation pipe.

[0008] Preferably, a liquid level gauge is provided above the cooling filter tank and a filtering device is provided below the cooling filter tank, a waste recovery port is provided at the bottom of the cooling filter tank, the cooling filter tank is connected to the water inlet of the plate radiator through a tank outlet pipe 1, an intermittent pump 2 is provided on the tank outlet pipe 1, the cooling filter tank is connected to the bottom of the water ring vacuum pump exhaust port through a pump inlet pipe 1, and a solenoid valve is provided on the pump inlet pipe 1.

[0009] Preferably, the water ring vacuum pumps are connected in parallel.

[0010] Preferably, the PLC electronic control system is electrically connected to the liquid level sensor, intermittent pump 2, liquid level gauge, intermittent pump 1 and solenoid valve. The PLC electronic control system receives the liquid level sensor signal to open the solenoid valve to replenish the water ring vacuum pump. The PLC electronic control system controls the operation of intermittent pump 2 and intermittent pump 1. The PLC electronic control system receives liquid level gauge data and issues an early warning when the liquid level in the cooling filter tank is low.

[0011] The beneficial effects of the utility model are:

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The utility model adopts the outlet pipeline as the steam heat dissipation pipe, the plate radiator and the cooling filter tank to cool the water vapor in the water ring vacuum pump, condenses the water vapor in the water ring vacuum pump, and cools and filters the condensed water for recycling, which solves the problem of water resource waste caused by the use of the water ring vacuum pump. At the same time, the filtered condensed water reduces the corrosion of the equipment, relieves the pressure on subsequent environmental protection sewage treatment, and reduces production costs.

[0014] 2. The utility model adopts a PLC electronic control system to control the production pipeline. The production pipeline is supervised by the PLC electronic control system to realize the intelligence of the production pipeline. It can replenish the water ring vacuum pump in time and regulate the temperature of the circulating water in the pipeline to control the temperature within a reasonable range, thereby improving work efficiency and improving the vacuum pumping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the flow of a water ring vacuum pump unit;

[0017] Figure 2 This is a schematic diagram of the structure of a water ring vacuum pump group;

[0018] Figure 3 This is a partial schematic diagram of the plate radiator and the cooling filter tank;

[0019] Figure 4 It is a structural diagram of the steam heat dissipation pipe;

[0020] Figure 5 is a cross-sectional schematic diagram of a steam heat dissipation pipe;

[0021] Figure 6 This is a schematic diagram of the structure of a water ring vacuum pump group;

[0022] In the figure: 1. Water ring vacuum pump, 2. Plate radiator, 3. Cooling filter tank, 4. PLC electronic control system, 5. Pump water inlet pipeline 1, 6. Pump air outlet pipeline 1, 7. Plate water outlet pipeline 1, 8. Plate water outlet pipeline 2, 9. Tank water outlet pipeline 1, 10. Check valve, 11. Intermittent pump 1, 12. Solenoid valve, 13. Intermittent pump 2, 14. Steam heat dissipation pipe, 15. Air nozzle, 16. "T"-shaped heat sink, 17. Leakage port. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In order to solve the above technical problems, the utility model provides a water ring vacuum pump 1 group, including: a water ring vacuum pump 1, a plate radiator 2, a pump water inlet pipeline 5, a pump air outlet pipeline 6, a plate water outlet pipeline 7, a plate water outlet pipeline 2 8, a tank water outlet pipeline 9, a PLC electronic control system 4 and a cooling filter tank 3. The water ring vacuum pump 1 is provided with a liquid level sensor, which can transmit the liquid level information of the water ring vacuum pump 1 to the PLC electronic control system 4. The water ring vacuum pump 1 is connected in series to improve the efficiency of the entire system. The vacuum degree can be improved, and the working pressure of a single pump can be reduced, thereby improving the reliability and stability of the entire system. The outlet of the connected water ring vacuum pump 1 is connected to the plate radiator 2 through a pump outlet pipeline 16. A gate valve 1 is provided on the pump outlet pipeline 16. The plate radiator 2 is connected to the cooling filter tank 3. The water vapor after heat dissipation and cooling is sent into the cooling filter tank 3. Part of the water after cooling and filtration enters the plate radiator 2 to cool the water vapor, and part enters the water ring vacuum pump 1 to replenish the water ring vacuum pump 1.

[0025] In some embodiments, the air outlet of the water ring vacuum pump 1 is connected to the air inlet of the plate radiator 2 through a pump outlet pipeline 6. The pump outlet pipeline 6 adopts a steam heat dissipation pipe 14. The steam heat dissipation pipe 14 is provided with multiple "trumpet" shaped air nozzles 15 with backward openings. A leakage port 17 is provided below the air nozzle 15. When water vapor enters the "trumpet" shaped air nozzle 15, it is affected by the shape change of the air nozzle 15 and is subjected to increased pressure when passing through a smaller passage, causing the water vapor to cool down. A very small amount of water vapor condenses into condensed water and flows back through the leakage port 17. The outside of the steam heat dissipation pipe 14 is provided with a surrounding "T" heat sink. The heat transferred by the water vapor cooling is transferred outward through the "T" heat sink.

[0026] In some embodiments, the water outlet of the plate radiator 2 is connected to the cooling filter tank 3 through a plate water outlet pipeline 7. A check valve 10 and an intermittent pump 11 are provided on the plate water outlet pipeline 7. The check valve 10 prevents the water level in the plate temperature filter tank from being higher than the water outlet of the plate radiator 2, causing condensed water to flow back into the plate radiator 2. The outlet water of the plate radiator 2 is pumped into the cooling filter tank 3 by using an intermittent pump 11. The air outlet of the plate radiator 2 is connected to the cooling filter tank 3 through a plate water outlet pipeline 2 8. The water outlet pipeline 2 adopts a steam heat dissipation pipe 14 to further cool the water vapor through the steam heat dissipation pipe.

[0027] In some embodiments, a liquid level gauge is provided above the cooling filter tank 3 and a filtering device is provided below the cooling filter tank 3. A waste recovery port is provided at the bottom of the cooling filter tank 3 to collect the residue produced by the filtration. The cooling filter tank 3 is connected to the water inlet of the plate radiator 2 through the tank outlet pipe 19. An intermittent pump 2 13 is provided on the tank outlet pipe 19. The intermittent pump 2 13 works at the same frequency as the intermittent pump 11. The intermittent pump 2 13 pumps the condensed water in the cooling filter tank 3 into the plate radiator 2 for cooling the plate radiator 2. The water vapor in the water ring vacuum pump 1 is cooled, and the cooling filter tank 3 is connected to the lower part of the exhaust port of the water ring vacuum pump 1 through the pump water inlet pipeline 1-5. The pump water inlet pipeline 1-5 is provided with a solenoid valve 12. When the PLC electronic control system 4 detects that the water level in the water ring vacuum pump 1 is lower than the predetermined threshold value, the solenoid valve 12 is opened to replenish the water ring vacuum pump 1. When the PLC electronic control system 4 detects that the water level in the water ring vacuum pump 1 reaches the preset threshold value, the solenoid valve 12 is closed to stop replenishing the water ring vacuum pump 1.

[0028] In some embodiments, the PLC electronic control system 4 is electrically connected to the liquid level sensor, intermittent pump 2 13, liquid level gauge, intermittent pump 1 11 and solenoid valve 12. The PLC electronic control system 4 receives the liquid level sensor signal to open the solenoid valve 12 to replenish the water ring vacuum pump 1. The PLC electronic control system 4 controls the operation of intermittent pump 2 13 and intermittent pump 1 11. The PLC electronic control system 4 receives liquid level gauge data and issues an early warning when the liquid level of the cooling filter tank 3 is low. The PLC electronic control system 4 performs intelligent management and control of the production pipeline.

[0029] Example 1

[0030] In a specific embodiment provided by the present invention, Figure 1-Figure 5 As shown, the present water ring vacuum pump group 1 can be composed of one water ring vacuum pump 1 or multiple water ring vacuum pumps 1 connected in series, and the air outlet of the series-connected water ring vacuum pumps 1 is connected to the steam heat dissipation pipe, and the water vapor is cooled through a plurality of "trumpet"-shaped air nozzles 15 in the steam heat dissipation pipe, and the heat brought out by the cooling is dissipated through the "T"-shaped heat sink 16 on the outer surface of the steam heat dissipation pipe. The air outlet end of the steam heat dissipation pipe is connected to the air inlet end of the plate radiator 2 through a pump air outlet pipeline 16. After the water vapor circulates up and down in the plate radiator 2, it flows out from the air outlet of the plate radiator 2 through the plate water outlet pipeline 2 8 and enters the cooling filter tank 3 for cooling and filtering treatment.

[0031] A portion of the circulating water after condensation filtration is driven by an intermittent pump 11 through a tank outlet pipe 9 to enter the water inlet of the plate radiator 2, and after cooling the plate radiator 2, it is driven by an intermittent pump 2 13 through a plate outlet pipe 7 to return to the cooling filter tank 3, and the cooling filter tank 3 is connected to the lower part of the exhaust port of the water ring vacuum pump 1 through a pump inlet pipe 5. When the PLC electronic control system 4 detects that the water level in the water ring vacuum pump 1 is lower than a predetermined threshold, the solenoid valve 12 is opened to replenish the water ring vacuum pump 1. When the PLC electronic control system 4 detects that the water level in the water ring vacuum pump 1 reaches the preset threshold, the solenoid valve 12 is closed to stop replenishing the water ring vacuum pump 1.

[0032] Example 2

[0033] In a specific embodiment provided by the present invention, Figure 1 、 Figure 6 As shown, a group of water ring vacuum pumps 1 can be composed of one water ring vacuum pump 1 or multiple water ring vacuum pumps 1 connected in series. The series connection can increase the total air extraction capacity of the system, making the entire system more efficient when processing a large amount of gas. The series connection can adjust the number of pumps in operation according to actual needs, and can be suitable for extracting a large amount of condensable water vapor, thereby realizing flexible control of the air extraction capacity.

[0034] The utility model realizes unified intelligent management and control of pipeline settings and a PLC electronic control system 4, so that the water circulation pipeline of the water ring vacuum pump 1 group forms a closed loop. The cooling treatment of the steam heat dissipation pipe 14, the plate radiator 2 and the cooling filter tank 3 reduces the waste of water resources and saves production costs. The vacuum rate of the water ring vacuum pump 1 is increased by cooling, thereby improving production efficiency.

Claims

1. A water ring vacuum pump unit, characterized in that: include: A water ring vacuum pump, a plate radiator, a pump water inlet pipeline 1, a pump air outlet pipeline 1, a plate water outlet pipeline 1, a plate water outlet pipeline 2, a tank water outlet pipeline 1, a PLC electronic control system and a cooling filter tank. The water ring vacuum pump is provided with a liquid level sensor, and the water ring vacuum pump is connected in series. The air outlet of the connected water ring vacuum pump is connected to the plate radiator via a pump air outlet pipeline 1. A gate valve 1 is provided on the pump air outlet pipeline 1. The plate radiator is connected to the cooling filter tank. Part of the water after cooling and filtration enters the plate radiator to cool the water vapor, and part enters the water ring vacuum pump to replenish the water ring vacuum pump.

2. A water ring vacuum pump unit according to claim 1, characterized in that: The air outlet of the water ring vacuum pump is connected to the air inlet of the plate radiator through a pump outlet pipeline. The pump outlet pipeline adopts a steam heat dissipation pipe. A plurality of "trumpet"-shaped air nozzles with backward openings are provided inside the steam heat dissipation pipe. A liquid leakage port is provided below the air nozzle. A surrounding "T"-shaped heat dissipation fin is provided on the outside of the steam heat dissipation pipe.

3. A water ring vacuum pump unit according to claim 1, characterized in that: The water outlet of the plate radiator is connected to the cooling filter tank through the plate water outlet pipeline 1, and the plate water outlet pipeline 1 is provided with a check valve and an intermittent pump 1. The air outlet of the plate radiator is connected to the cooling filter tank through the plate water outlet pipeline 2, and the plate water outlet pipeline 2 adopts a steam heat dissipation pipe.

4. A water ring vacuum pump unit according to claim 1, characterized in that: A liquid level gauge is provided above the cooling filter tank and a filtering device is provided below the cooling filter tank. A waste recovery port is provided at the bottom of the cooling filter tank. The cooling filter tank is connected to the water inlet of the plate radiator through a tank outlet pipe 1. An intermittent pump 2 is provided on the tank outlet pipe 1. The cooling filter tank is connected to the bottom of the exhaust port of the water ring vacuum pump through a pump inlet pipe 1. A solenoid valve is provided on the pump inlet pipe 1.

5. A water ring vacuum pump unit according to claim 1, characterized in that: The water ring vacuum pumps are connected in parallel.

6. A water ring vacuum pump unit according to claim 1, characterized in that: The PLC electronic control system is electrically connected to the liquid level sensor, intermittent pump 2, liquid level gauge, intermittent pump 1 and solenoid valve. The PLC electronic control system receives the liquid level sensor signal to open the solenoid valve to replenish the water ring vacuum pump. The PLC electronic control system controls the operation of intermittent pump 2 and intermittent pump 1. The PLC electronic control system receives liquid level gauge data and issues an early warning when the liquid level in the cooling filter tank is low.

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