Water-saving auxiliary equipment for water ring vacuum pump

Abstract

This invention discloses a water-saving auxiliary equipment for a water-ring vacuum pump, relating to the field of vacuum pump water circulation technology. It includes a gas-liquid separation tank, with a maintenance hood installed on its upper side. A baffle and demister assembly is fixedly installed inside the maintenance hood. An airflow-driven impeller is rotatably installed on the lower side of the maintenance hood, and a circulating filter cartridge is movably installed below the airflow-driven impeller. A conical guide cylinder is fixedly installed inside the gas-liquid separation tank. This invention utilizes exhaust kinetic energy to drive the airflow and rotate the impeller, causing the central shaft to synchronously drive the spiral conveyor shaft and spiral conveyor blades to rotate, achieving self-driven tumbling and circulation of the filter medium within the circulation chamber. The working fluid enters the circulation chamber through the first and second inlet tanks and is forcibly filtered, causing impurities and scale precursors to preferentially accumulate and grow on the medium surface, thereby solving the problems of circulating water quality deterioration and internal scaling and jamming of the equipment.

Description

Technical Field

[0001] This invention relates to the field of vacuum pump water circulation technology, specifically to a water-saving auxiliary equipment for a water ring vacuum pump. Background Technology

[0002] A water ring vacuum pump is a vacuum device that uses the eccentric rotation of an impeller to drive the working fluid to form a water ring. The gas is then drawn in, compressed, and discharged based on the periodic change in the water ring's volume. It has advantages such as simple structure, stable operation, large pumping capacity, and the ability to pump gases containing small amounts of liquid and dust. It is widely used in chemical, pharmaceutical, food processing, mining, and wastewater treatment industries. During operation, a continuous supply of working fluid is required to the pump body. This working fluid not only participates in the vacuum formation process but also provides sealing, cooling, and lubrication. Its operating condition directly affects the pumping efficiency and vacuum stability of the vacuum pump.

[0003] To reduce working fluid consumption, existing water ring vacuum pumps are generally equipped with gas-liquid separation devices. These devices separate the gas-liquid mixture discharged from the vacuum pump, allowing the separated working fluid to be recycled back into the circulation system. Existing gas-liquid separation devices typically employ a closed-loop separation tank structure, achieving gas-liquid separation through methods such as expansion sedimentation, baffle collision, or cyclone separation. The separated gas is discharged from the top, while the liquid collects at the bottom of the tank and returns to the circulating water tank, thus forming a closed-loop system. This reduces the need for fresh water replenishment and improves water resource utilization.

[0004] However, during long-term circulation, mineral ions, suspended impurities, and tiny particles generated during equipment operation accumulate in the working fluid, causing the circulating water to gradually concentrate. This easily leads to the formation of microcrystal nuclei, crystal deposits, and scale buildup. This not only affects the flow performance and heat exchange efficiency of the working fluid but may also cause blockages and scaling in the circulation pipelines, gas-liquid separation devices, and vacuum pumps, reducing equipment operating efficiency and increasing maintenance costs. Furthermore, most existing gas-liquid separation devices use a closed tank structure, with internal guide components, demisters, and separation components typically fixed inside the tank, offering only inlets / outlets and a few inspection holes. After a period of operation, scale, deposits, or blockages build up inside are difficult to clean in a timely manner. Maintenance often requires disassembling the entire device or even shutting down the machine, making the maintenance process cumbersome and detrimental to the long-term stable operation of the equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a water-saving auxiliary device for a water ring vacuum pump, so as to solve the problems mentioned in the background art, such as the easy formation of scale crystals in existing gas-liquid separators and the difficulty in internal maintenance of the equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a water-saving auxiliary equipment for a water ring vacuum pump, comprising a gas-liquid separation tank, an inspection and treatment hood installed on the upper side of the gas-liquid separation tank, a baffle demisting assembly fixedly installed inside the inspection and treatment hood, an airflow drive impeller rotatably installed on the lower side of the inspection and treatment hood, a circulating filter cylinder movably installed on the lower side of the airflow drive impeller, a conical guide cylinder fixedly installed inside the gas-liquid separation tank, the circulating filter cylinder being disposed inside the conical guide cylinder, a liquid inlet provided on one side of the gas-liquid separation tank, and a liquid outlet provided on the lower side of the gas-liquid separation tank; The filter circulation mechanism further includes a central rotating shaft and a tangential air inlet. The central rotating shaft is rotatably mounted on the maintenance hood. The airflow drive impeller is fixedly mounted on the central rotating shaft. The circulating filter cylinder is rotatably mounted on the central rotating shaft. A tangential air inlet is provided on the upper side of the maintenance hood. The position of the tangential air inlet is opposite to the position of the airflow drive impeller. The defogging enhancement mechanism further includes a vibrating defogging plate and an exhaust port. The vibrating defogging plate is provided in the gap of the deflector assembly, and the exhaust port is provided on the upper side of the maintenance hood.

[0007] Preferably, the filtration circulation mechanism further includes a spiral conveying shaft, spiral conveying blades, a fixed bracket, a circulation chamber, a first liquid inlet groove, and a liquid outlet. The spiral conveying shaft is rotatably installed inside the circulation filter cylinder. The spiral conveying shaft is fixedly installed on a central rotating shaft. Spiral conveying blades are fixedly installed on the spiral conveying shaft. The fixed bracket is fixedly installed inside the circulation filter cylinder. The circulation chamber is fixedly installed on the fixed bracket. The spiral conveying blades are in contact with the inner side of the circulation chamber. The first liquid inlet groove is arrayed on the circulation filter cylinder. The liquid outlet is arrayed at the lower end of the circulation filter cylinder. The spiral conveying blades are in contact with the lower side of the circulation filter cylinder.

[0008] Preferably, the filtration circulation mechanism further includes a guide ring and a second liquid inlet groove. The lower end of the conical guide cylinder is fixedly installed with a guide ring, and the lower end of the circulating filter cylinder is inserted into the guide ring. The guide ring has an array of second liquid inlets, and the positions of the second liquid inlets and the first liquid inlets are opposite to those of the first liquid inlets.

[0009] Preferably, the filtration circulation mechanism further includes an air guide mounting groove and an upflow guide impeller. The airflow drive impeller has an air guide mounting groove at its center, and the upflow guide impeller is fixedly installed in the air guide mounting groove. The central rotating shaft is fixedly installed at the center of the upflow guide impeller, and the diameter of the air guide mounting groove is larger than the maximum diameter of the circulation filter cartridge.

[0010] Preferably, the filtration circulation mechanism further includes corrugated grooves and corrugated rings. A corrugated ring is fixedly installed on the lower side of the second liquid inlet groove. Corrugated grooves are arrayed on the lower side of the circulating filter cylinder. The circulating filter cylinder is engaged with the corrugated ring through the corrugated grooves. The central axis of the tangential air inlet is a set of tangents of the maintenance hood. The height of the airflow driven impeller is less than the maximum diameter of the tangential air inlet. The airflow driven impeller does not contact the inner wall of the maintenance hood.

[0011] Preferably, the filtration and circulation mechanism further includes a bearing, a limiting block, a telescopic motor, a mounting block, a speed detector, a detection trigger ring, and a limiting slot. A bearing is fixedly installed at the center of the upper side of the maintenance cover, and a limiting block is fixedly installed inside the bearing. A mounting plate on the upper side of the maintenance cover has a mounting bracket, and a telescopic motor is fixedly installed on the mounting bracket. A mounting block is fixedly installed on the telescopic rod of the telescopic motor. The upper end of the central rotating shaft is rotatably mounted on the mounting block, and a speed detector is installed inside the mounting block. A detection trigger ring is fixedly installed on the upper end of the central rotating shaft, and the measuring end of the speed detector abuts against the detection trigger ring. A limiting slot is opened on the upper side of the central rotating shaft, and the limiting block is inserted into the limiting slot.

[0012] Preferably, the defogging enhancement mechanism further includes an annular mounting frame, a central guide sleeve, and pulse vibrating plates. The annular mounting frame is fixedly installed on the outer side of the upper end of the deflector assembly. The central guide sleeve is fixedly installed at the center of the deflector assembly. The central rotating shaft is movably inserted into the central guide sleeve and does not contact the central guide sleeve. The vibrating defogging plates are fixedly installed on the annular mounting frame. The thickness of the vibrating defogging plates is less than the thickness of the folds on the deflector assembly. Pulse vibrating plates are fixedly installed on the lower side of each vibrating defogging plate. The pulse vibrating plates are arranged in a ring array.

[0013] Preferably, the demisting enhancement mechanism further includes a sealing ring, a mounting groove, a lower connecting ear plate, an upper connecting ear plate, and bolt mounting holes. A sealing ring is fixedly installed on the lower side of the maintenance hood. A mounting groove is opened on the upper side of the gas-liquid separator, and the sealing ring fits into the mounting groove. Two sets of lower connecting ear plates are fixedly installed on the upper side of the gas-liquid separator, and two sets of upper connecting ear plates are fixedly installed on the lower side of the maintenance hood. The length of the upper connecting ear plate is greater than the length of the lower connecting ear plate. The lower connecting ear plate fits onto the lower side of the upper connecting ear plate. Bolt mounting holes are opened on both the lower and upper connecting ear plates.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes exhaust kinetic energy to drive airflow and rotate the impeller, causing the central shaft to synchronously drive the spiral conveyor shaft and spiral conveyor blades to rotate, thus realizing the self-driven tumbling and circulation of the filter media within the circulating chamber. The working fluid enters the circulating chamber through the first and second inlet tanks and is forcibly filtered, causing impurities and scale precursors to preferentially accumulate and grow on the surface of the media, thereby solving the problems of circulating water quality deterioration and internal scaling and jamming of the equipment. Furthermore, when the system resistance is too high, causing the rotational speed to drop, the speed detector and the telescopic motor work together to lift the mounting block, causing the circulating filter cylinder to disengage from the conical guide cylinder to automatically open the emergency bypass, effectively avoiding unplanned shutdowns caused by blockages. This invention centrally mounts all core components onto a treatment hood made of corrosion-resistant or modified plastic, replacing the upper half of the traditional gas-liquid separation tank. This achieves a significant lightweight design, allowing for easy removal of the internal structure from the top by simply disassembling the treatment hood during maintenance. This completely solves the drawbacks of traditional integrated heavy-duty tanks, which are cumbersome to disassemble and difficult to maintain. Simultaneously, it utilizes pulsed airflow to impact pulsed vibrating plates and damped linkage vibration demisting plates to generate high-frequency vibrations. This causes accumulated water droplets to quickly detach and change their spacing to accelerate water vapor collision and aggregation. This significantly simplifies daily maintenance costs while dramatically improving the equipment's efficiency in precisely trapping mist. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 This is a schematic cross-sectional view of the gas-liquid separation tank and maintenance hood provided in an embodiment of the present invention. Figure 3 This is a schematic cross-sectional view of the conical guide cylinder provided in an embodiment of the present invention; Figure 4 This is a schematic cross-sectional view of the circulating filter cartridge provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the airflow-driven impeller provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structural separation at the deflector assembly provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structural separation at the telescopic motor provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structural separation at the maintenance and treatment cover provided in an embodiment of the present invention; Figure 9 Provided for embodiments of the present invention Figure 3 A magnified view of part A in the diagram.

[0016] In the diagram: 1. Gas-liquid separator; 2. Inspection and treatment hood; 3. Baffle demister assembly; 4. Airflow driven impeller; 5. Circulating filter cartridge; 6. Conical guide cylinder; 7. Liquid inlet; 8. Liquid outlet; 9. Filtration and circulation mechanism; 901. Central rotating shaft; 902. Screw conveyor shaft; 903. Screw conveyor blades; 904. Fixed bracket; 905. Circulation chamber; 906. First liquid inlet tank; 907. Liquid outlet; 908. Guide ring; 909. Second liquid inlet tank; 910. Air guide mounting slot; 911. Upflow guide impeller; 912. Corrugated groove; 913. 914. Corrugated ring; 915. Tangential air inlet; 916. Bearing; 917. Limiting block; 918. Telescopic motor; 919. Mounting block; 910. Speed ​​detector; 921. Detection trigger ring; 922. Limiting slot; 10. Demisting enhancement mechanism; 1001. Annular mounting frame; 1002. Central guide sleeve; 1003. Vibrating demisting plate; 1004. Pulse vibrating plate; 1005. Exhaust port; 1006. Sealing ring; 1007. Mounting groove; 1008. Lower connecting ear plate; 1009. Upper connecting ear plate; 1010. Bolt mounting hole. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-9 The present invention provides a technical solution: a water-saving auxiliary equipment for a water ring vacuum pump, comprising a gas-liquid separation tank 1, an inspection and treatment hood 2 installed on the upper side of the gas-liquid separation tank 1, a baffle demisting component 3 fixedly installed inside the inspection and treatment hood 2, an airflow drive impeller 4 rotatably installed on the lower side of the inspection and treatment hood 2, a circulating filter cylinder 5 movably installed on the lower side of the airflow drive impeller 4, a conical guide cylinder 6 fixedly installed inside the gas-liquid separation tank 1, the circulating filter cylinder 5 disposed inside the conical guide cylinder 6, a liquid replenishment port 7 provided on one side of the gas-liquid separation tank 1, and a liquid discharge port 8 provided on the lower side of the gas-liquid separation tank 1; The filter circulation mechanism 9 also includes a central rotating shaft 901 and a tangential air inlet 914. The central rotating shaft 901 is rotatably mounted on the maintenance and treatment hood 2. The airflow drive impeller 4 is fixedly mounted on the central rotating shaft 901. The circulating filter cartridge 5 is rotatably mounted on the central rotating shaft 901. The tangential air inlet 914 is provided on the upper side of the maintenance and treatment hood 2. The position of the tangential air inlet 914 is opposite to the position of the airflow drive impeller 4. The demisting enhancement mechanism 10 also includes a vibrating demisting plate 1003 and an exhaust port 1005. The vibrating demisting plate 1003 is installed in the gap of the deflector assembly 3, and the exhaust port 1005 is installed on the upper side of the maintenance hood 2. This equipment utilizes the pulse exhaust characteristics of the water ring vacuum pump to drive the airflow to drive the impeller 4 to rotate, thereby providing power for the circulation of materials in the circulating filter cartridge 5. The materials in the circulating filter cartridge 5 can be selected according to the actual usage. For example, if the gas to be extracted has a lot of dust, seed crystals can be selected for crystallization, or if there are many pollutants, activated carbon can be selected for filtration. In the gas-liquid separation process, the liquid must pass through the circulating filter cartridge 5, so that the liquid can be forcibly filtered, which can effectively reduce the accumulation of impurities in the water circulation. The maintenance hood 2 in this equipment is made of a different material than the gas-liquid separation tank 1. Conventional gas-liquid separators are generally made of metal tanks, which are sturdy and durable but not easy to maintain. Moreover, in actual use, at most two-thirds of the gas-liquid separator is usually filled with water, while the rest needs to be separated into gas and liquid. In other words, the upper tank does not have high strength requirements and is mainly used to process gas. Therefore, the equipment uses the maintenance hood 2 to replace the upper half of the metal tank, which is mainly used for gas processing. The material is made of corrosion-resistant plastic or modified plastic, which is lightweight. The main structure of the equipment is installed in the maintenance hood 2, which makes the equipment easy to disassemble and maintain, increasing the convenience of using the equipment.

[0019] Furthermore, the filtration circulation mechanism 9 also includes a spiral conveying shaft 902, spiral conveying blades 903, a fixed bracket 904, a circulation chamber 905, a first liquid inlet 906, and a drain hole 907. The spiral conveying shaft 902 is rotatably installed inside the circulation filter cylinder 5. The spiral conveying shaft 902 is fixedly installed on the central rotating shaft 901. The spiral conveying blades 903 are fixedly installed on the spiral conveying shaft 902. The fixed bracket 904 is fixedly installed inside the circulation filter cylinder 5. The circulation chamber 905 is fixedly installed on the fixed bracket 904. The spiral conveying blades 903 are in contact with the inner side of the circulation chamber 905. The first liquid inlet 906 is arrayed on the circulation filter cylinder 5. The drain hole 907 is arrayed at the lower end of the circulation filter cylinder 5. The spiral conveying blades 903 are in contact with the lower side of the circulation filter cylinder 5. Both sides of the lower side of the circulating filter cylinder 5 are frustoconical. Under the action of the rotation of the screw conveyor shaft 902, the screw conveyor blades 903 will continuously cause the material in the circulating chamber 905 to rise and be discharged into the gap between the circulating filter cylinder 5 and the circulating chamber 905. Then it will be concentrated on the lower side of the circulating filter cylinder 5 and continue to be fed into the circulating chamber 905, completing the dynamic circulation of the material in the circulating filter cylinder 5. This circulation can effectively reduce the occurrence of blockage and enable all materials to participate in filtration, increasing the stability of filtration. Furthermore, the filtration circulation mechanism 9 also includes a guide ring 908 and a second inlet groove 909. The guide ring 908 is fixedly installed at the lower end of the conical guide cylinder 6, and the lower end of the circulating filter cylinder 5 is inserted into the guide ring 908. The guide ring 908 has an array of second inlet grooves 909, and the positions of the second inlet grooves 909 and the first inlet grooves 906 are opposite. Inside the conical guide cylinder 6, the part near the inner wall is a rotating downward flow, and the central part is an upward flow. The upper side of the cross-section of the guide ring 908 is arc-shaped, which is used to guide the downward flow into an upward flow, so that the upward flow can rise along the outer wall of the circulating filter cylinder 5, which is conducive to the stable formation of airflow inside the conical guide cylinder 6. The second inlet groove 909 and the first inlet groove 906 both have a certain slope, and their tilt direction is adapted to the rotation direction, so that the rotating flow will not rush into the second inlet groove 909, which is conducive to maintaining the vortex. Furthermore, the filtration and circulation mechanism 9 also includes an air guide mounting groove 910 and an upflow guide impeller 911. An air guide mounting groove 910 is located at the center of the airflow-driven impeller 4, and the upflow guide impeller 911 is fixedly installed within the air guide mounting groove 910. A central rotating shaft 901 is fixedly installed at the center of the upflow guide impeller 911. The diameter of the air guide mounting groove 910 is larger than the maximum diameter of the circulation filter cylinder 5. This structure allows the airflow-driven impeller 4 to rotate, driving the upflow guide impeller 911 to rotate as well. This ensures a stable upflow at the center of the conical guide cylinder 6, allowing gas to be discharged quickly, facilitating rapid gas-liquid separation, and increasing the stability of the swirling flow. Furthermore, the filter circulation mechanism 9 also includes a corrugated groove 912 and a corrugated ring 913. A corrugated ring 913 is fixedly installed on the lower side of the second liquid inlet 909. Corrugated grooves 912 are arrayed on the lower side of the circulation filter cylinder 5. The circulation filter cylinder 5 is engaged with the corrugated ring 913 through the corrugated grooves 912. The central axis of the tangential air inlet 914 is a set of tangents of the maintenance and treatment hood 2. The height of the airflow driven impeller 4 is less than the maximum diameter of the tangential air inlet 914. The airflow driven impeller 4 does not contact the inner wall of the maintenance and treatment hood 2. This structure allows the fixing of the circulating filter cylinder 5 and the conical guide cylinder 6 to be released by lifting the circulating filter cylinder 5. Since the lower side of the circulating filter cylinder 5 is frustum-shaped, the connection between the conical guide cylinder 6 and the lower part of the gas-liquid separator 1 can be quickly restored after the circulating filter cylinder 5 is lifted, avoiding blockage. The position and size of the airflow driven impeller 4 ensure that the gas entering from the tangential air inlet 914 is not completely divided by the blades of the airflow driven impeller 4. Even if the airflow driven impeller 4 cannot rotate, the gas can still flow normally, avoiding the situation where the airflow driven impeller 4 obstructs the gas flow. Furthermore, the filtration and circulation mechanism 9 also includes a bearing 915, a limiting block 916, a telescopic motor 917, a mounting block 918, a speed detector 919, a detection trigger ring 920, and a limiting slot 921. The bearing 915 is fixedly installed at the center of the upper side of the maintenance and treatment cover 2. The limiting block 916 is fixedly installed inside the bearing 915. The upper side of the maintenance and treatment cover 2 has a mounting bracket, and the telescopic motor 917 is fixedly installed on the mounting bracket. The mounting block 918 is fixedly installed on the telescopic rod of the telescopic motor 917. The upper end of the central rotating shaft 901 is rotatably mounted on the mounting block 918. The speed detector 919 is installed inside the mounting block 918. The detection trigger ring 920 is fixedly installed on the upper end of the central rotating shaft 901. The measuring end of the speed detector 919 abuts against the detection trigger ring 920. A limiting slot 921 is opened on the upper side of the central rotating shaft 901, and the limiting block 916 is inserted into the limiting slot 921. This structure is a lifting structure for the circulating filter cartridge 5 and the airflow-driven impeller 4. The material inside the circulating filter cartridge 5 will gradually adsorb more and more impurities, making the resistance required for the rotation of the spiral conveying blade 903 increasingly greater. When the water ring vacuum pump is at a certain power, the speed of the central rotating shaft 901 drops significantly or even cannot rotate, indicating that the material inside the circulating filter cartridge 5 is saturated. At this time, the telescopic motor 917 drives the central rotating shaft 901 to rise, causing the circulating filter cartridge 5 to separate from the conical guide cylinder 6, so that the lower end of the conical guide cylinder 6 is opened. At this time, the gas-liquid separation function inside the equipment can still be carried out normally. This structure is an emergency separation when the water ring vacuum pump needs to be used continuously, avoiding the situation where the vacuum pump needs to be stopped for cleaning due to the blockage of the circulating filter cartridge 5. Furthermore, the defogging enhancement mechanism 10 also includes an annular mounting frame 1001, a central guide sleeve 1002, and a pulse vibrating plate 1004. The annular mounting frame 1001 is fixedly installed on the outer side of the upper end of the deflector assembly 3. The central guide sleeve 1002 is fixedly installed at the center of the deflector assembly 3. The central rotating shaft 901 is movably inserted into the central guide sleeve 1002 and does not contact the central guide sleeve 1002. The vibrating defogging plate 1003 is fixedly installed on the annular mounting frame 1001. The thickness of the vibrating defogging plate 1003 is less than the thickness of the folds on the deflector assembly 3. Pulse vibrating plates 1004 are fixedly installed on the lower side of the vibrating defogging plate 1003. The pulse vibrating plates 1004 are arranged in a ring array. The exhaust of the water ring vacuum pump has a pulsed characteristic. Combined with the characteristic that the gas will form a swirling flow when it enters the gas-liquid separation tank 1, the impact of the gas causes the pulse vibrating plate 1004 to vibrate, which in turn drives the vibrating demister 1003 to vibrate. This allows the water droplets on the vibrating demister 1003 and the baffle demister assembly 3 to be discharged quickly. Furthermore, the vibration of the vibrating demister 1003 causes the distance between the baffle demister assembly 3 and the vibrating demister 1003 to change continuously, which accelerates the collision of water vapor in the gas and is conducive to the formation of water droplets, thereby improving the fog interception efficiency of the baffle demister assembly 3. Furthermore, the demisting enhancement mechanism 10 also includes a sealing ring 1006, a mounting groove 1007, a lower connecting ear plate 1008, an upper connecting ear plate 1009, and bolt mounting holes 1010. The sealing ring 1006 is fixedly installed on the lower side of the maintenance hood 2, and the mounting groove 1007 is opened on the upper side of the gas-liquid separator 1. The sealing ring 1006 is fitted into the mounting groove 1007. Two sets of lower connecting ear plates 1008 are fixedly installed on the upper side of the gas-liquid separator 1, and two sets of upper connecting ear plates 1009 are fixedly installed on the lower side of the maintenance hood 2. The length of the upper connecting ear plate 1009 is greater than the length of the lower connecting ear plate 1008. The lower connecting ear plate 1008 is fitted into the lower side of the upper connecting ear plate 1009. Bolt mounting holes 1010 are opened on both the lower connecting ear plate 1008 and the upper connecting ear plate 1009. This structure is a disassembly structure for the maintenance and treatment hood 2. The deflector assembly 3 is fixedly installed inside the maintenance and treatment hood 2. The central rotating shaft 901 is rotatably installed on the maintenance and treatment hood 2. The airflow drive impeller 4 and the circulating filter cartridge 5 are both installed on the central rotating shaft 901. Therefore, disassembling the maintenance and treatment hood 2 means disassembling most of the structure, making the equipment easy to maintain. In addition to being used to fix the upper connecting ear plate 1009 to the lower connecting ear plate 1008 by bolts and nuts, its long outer side can also be used as a handle to make it easy to lift the maintenance and treatment hood 2. Working principle: When using this invention, the gas-liquid mixture discharged from the water ring vacuum pump is introduced into the gas-liquid separation tank 1. The gas-liquid mixture enters the conical guide cylinder 6 tangentially through the tangential air inlet 914 and forms a high-speed rotating flow field inside the conical guide cylinder 6. Under the action of centrifugal force, the liquid in the mixture moves towards the inner wall of the conical guide cylinder 6 and flows downward along its inner wall, while the gas converges towards the central area, thereby achieving preliminary gas-liquid separation.

[0020] During its flow, the rotating airflow continuously laterally blows the blades of the airflow-driven impeller 4, causing the impeller 4 to rotate. Simultaneously, the central shaft 901 drives the spiral conveyor shaft 902 and spiral conveyor blades 903 to rotate, thus continuously circulating the filter media within the circulation chamber 905. Liquid collected from the inner wall of the conical guide cylinder 6 enters the circulation chamber 905 through the first inlet tank 906 and the second inlet tank 909. As the liquid continuously flows through the filter media, suspended impurities, microcrystal nuclei, and easily scale-forming crystal precursors in the circulating water preferentially adhere to the surface of the filter media. With the continuous turbulence of the filter media, these substances gradually accumulate and grow, concentrating scale-forming materials within the filter circulation mechanism 9, thereby reducing scale buildup in the circulation system and inside the water ring vacuum pump.

[0021] When the flow rate of the gas-liquid mixture entering the gas-liquid separator 1 increases, and the speed detector 919 detects that the speed of the airflow-driven impeller 4 has reached the set value, the telescopic motor 917 drives the mounting block 918 to move upward, causing the filter circulation mechanism 9 to rise as a whole. When the corrugated ring 913 disengages from the corrugated groove 912, the circulation filter cylinder 5 completely disengages from the conical guide cylinder 6, thereby eliminating the flow path of the liquid entering the circulation chamber 905, restoring the conical guide cylinder 6 to its complete flow cross section, reducing flow resistance, and improving the gas-liquid separation efficiency under high flow conditions.

[0022] After the gas-liquid mixture enters the conical guide cylinder 6, it forms a rotating airflow. As the rotating airflow moves upward, it continuously washes over the pulse vibrating plate 1004 inside the demisting enhancement mechanism 10, causing the pulse vibrating plate 1004 to vibrate periodically under the action of the rotating airflow, and transmitting the vibration to the vibrating demister 1003. When the gas carrying droplets passes through the vibrating demister 1003, the droplets collide repeatedly with the vibrating demister 1003 and coalesce to form larger droplets. The larger droplets fall back into the gas-liquid separation tank 1 under the action of gravity, thereby improving the capture capacity of fine droplets, reducing the loss of working fluid with the exhaust, and improving the recycling efficiency of the circulating fluid. The gas after demisting is finally discharged from the exhaust port 1005.

[0023] When a lot of crystals or impurities accumulate on the surface of the filter medium, the inspection and maintenance cover 2 can be disassembled to remove the entire filter circulation mechanism 9 from the top of the gas-liquid separation tank 1. The filter medium in the circulation chamber 905 can then be cleaned or replaced, which facilitates equipment maintenance and ensures the long-term stability of the circulation filtration effect.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water-saving auxiliary device for a water ring vacuum pump, comprising a gas-liquid separation tank (1), characterized in that: A maintenance hood (2) is installed on the upper side of the gas-liquid separation tank (1). A baffle demister assembly (3) is fixedly installed inside the maintenance hood (2). An airflow drive impeller (4) is rotatably installed on the lower side of the maintenance hood (2). A circulating filter cylinder (5) is movably installed on the lower side of the airflow drive impeller (4). A conical guide cylinder (6) is fixedly installed inside the gas-liquid separation tank (1). The circulating filter cylinder (5) is located inside the conical guide cylinder (6). A liquid replenishment port (7) is provided on one side of the gas-liquid separation tank (1). A liquid drain port (8) is provided on the lower side of the gas-liquid separation tank (1). The filter circulation mechanism (9) further includes a central rotating shaft (901) and a tangential air inlet (914). The central rotating shaft (901) is rotatably mounted on the maintenance treatment hood (2). The airflow drive impeller (4) is fixedly mounted on the central rotating shaft (901). The circulating filter cylinder (5) is rotatably mounted on the central rotating shaft (901). A tangential air inlet (914) is provided on the upper side of the maintenance treatment hood (2). The position of the tangential air inlet (914) is opposite to the position of the airflow drive impeller (4). The demisting enhancement mechanism (10) further includes a vibrating demisting plate (1003) and an exhaust port (1005). The vibrating demisting plate (1003) is provided in the gap of the deflector assembly (3), and the exhaust port (1005) is provided on the upper side of the maintenance hood (2).

2. The water-saving auxiliary equipment for a water ring vacuum pump according to claim 1, characterized in that: The filtration and circulation mechanism (9) further includes a spiral conveying shaft (902), spiral conveying blades (903), a fixed bracket (904), a circulation chamber (905), a first liquid inlet (906), and a drain hole (907). The spiral conveying shaft (902) is rotatably installed inside the circulation filter cylinder (5). The spiral conveying shaft (902) is fixedly installed on the central rotating shaft (901). The spiral conveying blades (903) are fixedly installed on the spiral conveying shaft (902). The fixed bracket (904) is fixedly installed inside the circulation filter cylinder (5). The circulation chamber (905) is fixedly installed on the fixed bracket (904). The spiral conveying blades (903) are in contact with the inner side of the circulation chamber (905). The first liquid inlet (906) is arrayed on the circulation filter cylinder (5). The drain hole (907) is arrayed at the lower end of the circulation filter cylinder (5). The spiral conveying blades (903) are in contact with the lower side of the circulation filter cylinder (5).

3. The water-saving auxiliary equipment for a water ring vacuum pump according to claim 1, characterized in that: The filtration circulation mechanism (9) further includes a guide ring (908) and a second liquid inlet groove (909). The lower end of the conical guide cylinder (6) is fixedly installed with the guide ring (908). The lower end of the circulating filter cylinder (5) is inserted into the guide ring (908). The guide ring (908) is arrayed with the second liquid inlet groove (909). The position of the second liquid inlet groove (909) is opposite to the position of the first liquid inlet groove (906).

4. The water-saving auxiliary equipment for a water ring vacuum pump according to claim 1, characterized in that: The filtration circulation mechanism (9) also includes an air guide mounting groove (910) and an upflow guide impeller (911). The airflow drive impeller (4) has an air guide mounting groove (910) at its center. The upflow guide impeller (911) is fixedly installed in the air guide mounting groove (910). The central rotating shaft (901) is fixedly installed at the center of the upflow guide impeller (911). The diameter of the air guide mounting groove (910) is greater than the maximum diameter of the circulation filter cylinder (5).

5. The water-saving auxiliary equipment for a water ring vacuum pump according to claim 3, characterized in that: The filter circulation mechanism (9) also includes a corrugated groove (912) and a corrugated ring (913). The corrugated ring (913) is fixedly installed on the lower side of the second liquid inlet (909). The lower side of the circulation filter cylinder (5) is arrayed with corrugated grooves (912). The circulation filter cylinder (5) is engaged with the corrugated ring (913) through the corrugated grooves (912). The central axis of the tangential air inlet (914) is a set of tangents of the maintenance treatment hood (2). The height of the airflow drive impeller (4) is less than the maximum diameter of the tangential air inlet (914). The airflow drive impeller (4) does not contact the inner wall of the maintenance treatment hood (2).

6. The water-saving auxiliary equipment for a water ring vacuum pump according to claim 1, characterized in that: The filtration circulation mechanism (9) further includes a bearing (915), a limiting block (916), a telescopic motor (917), a mounting block (918), a speed detector (919), a detection trigger ring (920), and a limiting slot (921). A bearing (915) is fixedly installed at the center of the upper side of the maintenance cover (2). A limiting block (916) is fixedly installed inside the bearing (915). The upper side of the maintenance cover (2) has a mounting bracket, and a telescopic motor (917) is fixedly installed on the mounting bracket. 7) A mounting block (918) is fixedly installed on the telescopic rod. The upper end of the central rotating shaft (901) is rotatably mounted on the mounting block (918). A speed detector (919) is installed inside the mounting block (918). A detection trigger ring (920) is fixedly installed on the upper end of the central rotating shaft (901). The measuring end of the speed detector (919) abuts against the detection trigger ring (920). A limit slot (921) is opened on the upper side of the central rotating shaft (901). The limit block (916) is inserted into the limit slot (921).

7. The water-saving auxiliary equipment for a water ring vacuum pump according to claim 1, characterized in that: The defogging enhancement mechanism (10) further includes an annular mounting frame (1001), a central guide sleeve (1002), and a pulse vibrating plate (1004). The annular mounting frame (1001) is fixedly installed on the outer side of the upper end of the deflector assembly (3). The central guide sleeve (1002) is fixedly installed at the center of the deflector assembly (3). The central rotating shaft (901) is movably inserted into the central guide sleeve (1002) and does not contact the central guide sleeve (1002). The vibrating defogging plate (1003) is fixedly installed on the annular mounting frame (1001). The thickness of the vibrating defogging plate (1003) is less than the thickness of the folds on the deflector assembly (3). The lower side of the vibrating defogging plate (1003) is fixedly installed with a pulse vibrating plate (1004). The pulse vibrating plates (1004) are arranged in a ring array.

8. The water-saving auxiliary equipment for a water ring vacuum pump according to claim 1, characterized in that: The demisting enhancement mechanism (10) further includes a sealing ring (1006), a mounting groove (1007), a lower connecting ear plate (1008), an upper connecting ear plate (1009), and bolt mounting holes (1010). The sealing ring (1006) is fixedly installed on the lower side of the maintenance hood (2). The upper side of the gas-liquid separation tank (1) has a mounting groove (1007). The sealing ring (1006) fits into the mounting groove (1007). (1) Two sets of lower connecting ear plates (1008) are fixedly installed on the upper side. Two sets of upper connecting ear plates (1009) are fixedly installed on the lower side of the maintenance and treatment cover (2). The length of the upper connecting ear plate (1009) is greater than the length of the lower connecting ear plate (1008). The lower connecting ear plate (1008) is attached to the lower side of the upper connecting ear plate (1009). Bolt mounting holes (1010) are provided on both the lower connecting ear plate (1008) and the upper connecting ear plate (1009).

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