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CN-224214370-U - Water recycling device of liquid ring vacuum pump

CN224214370UCN 224214370 UCN224214370 UCN 224214370UCN-224214370-U

Abstract

The utility model discloses a water recycling device of a liquid ring vacuum pump, which comprises a liquid ring vacuum pump, wherein an exhaust gas inlet and a vacuum pump liquid outlet are formed in the upper end part of the liquid ring vacuum pump, a vacuum pump pure water inlet is formed in the lower end part of the liquid ring vacuum pump, the vacuum pump liquid outlet is connected with a gas-liquid storage separation tank, an exhaust gas outlet is formed in the top end of the gas-liquid storage separation tank, an overflow outlet and a separation tank liquid outlet are formed in the middle part of the gas-liquid storage separation tank at intervals from top to bottom, the separation tank liquid outlet is connected with a filter, an automatic water supplementing pipe is connected to the bottom of the gas-liquid storage separation tank, one end of the automatic water supplementing pipe is connected with the automatic water supplementing pipe outside the gas-liquid storage separation tank, the other end of the automatic water supplementing pipe is positioned in the gas-liquid storage separation tank, a floating ball water supplementing switch is arranged at the opening of the automatic water supplementing pipe, the filter is connected with a cooler, and a cooler outlet arranged on one side of the cooler is connected with the pure water inlet of the vacuum pump. The utility model can recycle working liquid, and is especially suitable for the field of plastic manufacturing.

Inventors

  • YUE YUJUN
  • WANG XIADONG
  • MAO QING

Assignees

  • 山东海江化工有限公司

Dates

Publication Date
20260508
Application Date
20250625

Claims (9)

  1. 1. The water recycling device of the liquid ring vacuum pump is characterized by comprising a liquid ring vacuum pump (100), wherein an exhaust gas inlet (101) and a vacuum pump liquid outlet (102) are arranged at the upper end part of the liquid ring vacuum pump (100) at intervals, and a vacuum pump pure water inlet (103) is arranged at the lower end part of the liquid ring vacuum pump; The vacuum pump liquid outlet (102) is connected with the gas-liquid storage separation tank (200) through a conveying pipeline, an exhaust gas outlet (201) is formed in the top end of the gas-liquid storage separation tank (200), overflow outlets (202) and separation tank liquid outlets (203) are formed in the middle of the gas-liquid storage separation tank (200) at intervals from top to bottom, and the separation tank liquid outlets (203) are connected with the filter (300) through the conveying pipeline; An automatic water supplementing pipe (204) is connected to the bottom of the gas-liquid storage separation tank (200), one end of the automatic water supplementing pipe (204) is positioned outside the gas-liquid storage separation tank (200) and is connected with an automatic water supplementing pipe, the other end of the automatic water supplementing pipe is positioned in the gas-liquid storage separation tank (200), and a floating ball water supplementing switch (500) is arranged at the opening of the automatic water supplementing pipe; the filter (300) is connected with the cooler (400) through a conveying pipeline, and a cooler output port arranged on one side of the cooler (400) is connected with the pure water inlet (103) of the vacuum pump through the conveying pipeline.
  2. 2. The liquid ring vacuum pump water recycling apparatus according to claim 1, wherein a vacuum pump discharge port (104) is provided on a lower portion side of the liquid ring vacuum pump (100) and on an opposite side of the vacuum pump pure water inlet (103).
  3. 3. The liquid ring vacuum pump water recycling device according to claim 1, wherein the waste gas outlet (201) is connected with a waste gas pipeline (2011), and a waste gas fan is arranged on the waste gas pipeline (2011).
  4. 4. The liquid ring vacuum pump water recycling apparatus according to claim 1, characterized in that an overflow line (2021) is connected to the overflow port (202), and the overflow line (2021) is connected to a waste water pipe (2022).
  5. 5. The device for recycling water of the liquid ring vacuum pump according to claim 1, wherein the floating ball water supplementing switch (500) comprises a floating ball (501) and a valve body mechanism (502) connected with the floating ball, the floating ball (501) floats on the liquid surface of the gas-liquid storage separation tank (200), and the valve body mechanism (502) is connected to the opening of the automatic water supplementing pipe (204).
  6. 6. The liquid ring vacuum pump water recycling device according to claim 1, wherein a liquid level sensor for monitoring the liquid level in the gas-liquid storage separation tank (200) is arranged in the gas-liquid storage separation tank (200).
  7. 7. The water recycling device of the liquid ring vacuum pump according to claim 1, wherein a manual water supplementing port (205) is further arranged at the top of the gas-liquid storage separation tank (200), the manual water supplementing port (205) is connected with a manual water supplementing pipeline (2051), and a switching valve is arranged at the joint of the manual water supplementing port and the manual water supplementing pipeline.
  8. 8. The water recycling device of the liquid ring vacuum pump according to claim 1, wherein the filter (300) is a basket filter, and a basket filter of 40-80 meshes is arranged inside the basket filter.
  9. 9. The water recycling device of the liquid ring vacuum pump according to claim 1, wherein the material conveying pipelines are provided with switch valves.

Description

Water recycling device of liquid ring vacuum pump Technical Field The utility model relates to the technical field of water recycling of liquid ring vacuum pumps, in particular to a water recycling device of a liquid ring vacuum pump for a plastic production and manufacturing process. Background The liquid ring vacuum pump is a positive displacement pump which realizes gas suction and compression by means of a liquid ring (usually water or other liquid), and realizes gas suction, compression and discharge by means of volume change by utilizing a variable volume cavity formed between the liquid ring and blades when an impeller rotates. The liquid ring vacuum pump plays a key role in the plastic production process, and the physical properties and the processing environment of plastic products are optimized mainly through the vacuumizing technology. For example, when plastics are melted, gases such as air, moisture and the like in the raw materials can form a steam pocket, so that the inside of particles is loose, the mechanical strength and the surface smoothness are reduced, and a liquid ring vacuum pump rapidly pumps out the gases through a negative pressure environment, so that the melt is more compact, and the product performance is improved. However, the existing liquid ring vacuum pump has some problems in the process of plastic production, for example, the existing liquid ring vacuum pump cannot realize automatic recycling of liquid in the system, and needs to continuously supplement liquid and continuously discharge waste liquid, or some existing technologies design an automatic water supplementing system and a filter for the liquid ring vacuum pump to realize automatic recycling of liquid in the liquid ring vacuum pump system, but the automatic water supplementing system and the filter cannot be applied to the process of using the liquid ring vacuum pump for plastic production. The liquid ring vacuum pump is used for decomposing plastics to generate low molecular volatile matters such as monomers, oligomers and the like and tiny dust particles in the high-temperature processing process of plastic production, the liquid ring vacuum pump is used for promoting the escape of harmful substances under negative pressure so as to avoid material degradation and peculiar smell generation, the escaping low molecular volatile matters and tiny dust particles enter the gas-liquid storage separation tank, the tiny dust particles can be removed through filtration interception of the filter, but the low molecular volatile matters float on the liquid surface of the gas-liquid storage separation tank and are difficult to remove by the filter, so that the automatic recycling of liquid in the liquid ring vacuum pump system is hindered. Disclosure of utility model In order to solve the technical problems, the utility model provides a water recycling device of a liquid ring vacuum pump, which is suitable for the plastic production and manufacturing process. The technical scheme of the utility model is as follows: The water recycling device of the liquid ring vacuum pump is characterized by comprising the liquid ring vacuum pump, wherein an exhaust gas inlet and a vacuum pump liquid outlet are arranged at intervals on the upper end part of the liquid ring vacuum pump, and a vacuum pump pure water inlet is arranged on the lower end part of the liquid ring vacuum pump; The liquid outlet of the vacuum pump is connected with the gas-liquid storage separation tank through a conveying pipeline, the top end of the gas-liquid storage separation tank is provided with an exhaust gas outlet, the middle part of the gas-liquid storage separation tank is provided with an overflow outlet and a separation tank liquid outlet at intervals from top to bottom, and the separation tank liquid outlet is connected with the filter through the conveying pipeline; The bottom of the gas-liquid storage separation tank is connected with an automatic water supplementing pipe, one end of the automatic water supplementing pipe is positioned outside the gas-liquid storage separation tank and connected with an automatic water supplementing pipe, the other end of the automatic water supplementing pipe is positioned in the gas-liquid storage separation tank, and a floating ball water supplementing switch is arranged at the opening of the automatic water supplementing pipe; the filter is connected with the cooler through a conveying pipeline, and a cooler output port arranged on one side of the cooler is connected with a pure water inlet of the vacuum pump through the conveying pipeline. Further, a vacuum pump discharge port is arranged on the lower side of the liquid ring vacuum pump and on the opposite side of the pure water inlet of the vacuum pump. Further, the waste gas outlet is connected with a waste gas pipeline, and a waste gas fan is arranged on the waste gas pipeline. Further, the overflow outlet is connected with an overflow pipeline, and the overfl