Cooling device of water-ring vacuum pump

Abstract

The utility model relates to a water ring type vacuum pump cooling device, and relates to the technical field of vacuum pumps, the water ring type vacuum pump cooling device comprises a vacuum pump body and a cooling assembly, the cooling assembly comprises an outer shell coaxially arranged on the vacuum pump body and a cooling box arranged on the outer shell, and a heat exchange cavity is formed between the outer shell and the vacuum pump body; a liquid inlet pipe and a liquid outlet pipe are arranged on the cooling box, the liquid inlet pipe and the liquid outlet pipe are both communicated with the heat exchange cavity, an operation pipe is arranged on the liquid inlet pipe, a filter screen is arranged in the operation pipe, an operation hole is formed in the inner circumferential wall of the operation pipe, a sealing plate for movably blocking the operation hole is rotationally arranged on the inner circumferential wall of the operation pipe, and the sealing plate is movably attached to the inner circumferential wall of the operation pipe. The sealing plate is provided with a locking assembly for fixing the sealing plate and the operation pipe, and the operation pipe is provided with an intercepting assembly for intercepting the cooling liquid. The cooling system has the effects that impurities on the filter screen can be conveniently cleaned, impurity residues in cooling liquid are reduced, and the heat exchange efficiency of the cooling system is improved.

Description

Technical Field

[0001] This application relates to the technical field of vacuum pumps, and in particular to a water-ring vacuum pump cooling device. Background Art

[0002] A water-ring vacuum pump is a rotary variable-volume vacuum pump that uses water or other liquids as the working medium. The water-ring vacuum pump is equipped with an eccentric rotor with fixed blades. The working medium is thrown towards the stator wall by the rotor blades, and the working medium forms a liquid ring concentric with the stator. The liquid ring and the rotor blades together form a variable volume to achieve suction, compression, and exhaust. It has the characteristics of a compact structure and a low compressed gas temperature, and is very suitable for sucking and transporting flammable and explosive gases.

[0003] A Chinese patent document with the publication number CN218913173U discloses a water-ring vacuum pump cooling auxiliary device, including a vacuum pump body. The vacuum pump body is composed of an inner shell and an outer shell. At the top of the vacuum pump body, there is a cooling device for cooling the coolant. The cooling device is connected to the inside of the outer shell of the vacuum pump body through an auxiliary pipeline. At the same time, a rotating ring is rotatably arranged in the auxiliary pipeline. A plurality of spiral rotating scrapers are fixedly connected to the outside of the rotating ring. A filter screen is also fixed in the auxiliary pipeline. When the cooling device works, the coolant flows through the auxiliary pipeline to the inside of the outer shell of the vacuum pump body, and then circulates to the cooling device to perform water cooling on the vacuum pump, so as to easily reduce the temperature of the vacuum pump in use to within the rated temperature value. At the same time, the coolant drives the rotating scraper to rotate and the rotating scraper cleans the impurities on the filter screen, thereby driving the coolant to accelerate the flow rate and accelerating the water cooling treatment of the cooling device for the vacuum pump.

[0004] In view of the above related technologies, during the coolant circulation process, the scraper scrapes the impurities on the filter screen, but it is not easy to clean the impurities. The impurities still remain in the coolant and are likely to accumulate on the inner wall of the pipeline, causing blockage of the cooling pipeline, reducing the circulation efficiency of the coolant, and thus reducing the heat exchange efficiency of the cooling system. Summary of the Utility Model

[0005] In order to facilitate the cleaning of the impurities on the filter screen, reduce the impurity residue in the coolant, and improve the heat exchange efficiency of the cooling system, this application provides a water-ring vacuum pump cooling device.

[0006] The water-ring vacuum pump cooling device provided by this application adopts the following technical solutions:

[0007] A water-ring vacuum pump cooling device, comprising a vacuum pump body and a cooling assembly. The cooling assembly includes a housing coaxially arranged on the vacuum pump body and a cooling tank arranged on the housing. A coolant is stored in the cooling tank. A heat exchange cavity is arranged between the housing and the vacuum pump body. The cooling tank is provided with a liquid inlet pipe and a liquid outlet pipe, and both the liquid inlet pipe and the liquid outlet pipe are communicated with the heat exchange cavity. The cooling tank is further provided with a power component for pumping the coolant into the heat exchange cavity through the liquid inlet pipe.

[0008] An operation pipe is arranged on the liquid inlet pipe. A filter screen is arranged in the operation pipe. An operation hole is formed in the side wall of the operation pipe. A sealing plate for movably blocking the operation hole is rotatably arranged in the operation pipe. The sealing plate is movably attached to the inner peripheral wall of the operation pipe. A locking assembly for fixing the sealing plate and the operation pipe is arranged on the sealing plate. A throttling assembly for throttling the coolant is arranged on the operation pipe.

[0009] By adopting the above technical solution, when the temperature of the vacuum pump body is too high, the power component works to pump the coolant in the cooling tank into the heat exchange cavity through the liquid inlet pipe. At the same time, the impurities in the coolant are filtered by the arranged filter screen to realize heat exchange of the vacuum pump body. Finally, the coolant enters the cooling tank through the liquid outlet pipe, and circulates in this way to realize the cooling of the vacuum pump body.

[0010] During maintenance, the technician rotates the sealing plate to open the operation hole, and at the same time throttles the coolant through the throttling assembly. At this time, the filter screen is exposed from the operation hole, which is convenient for the technician to clean the filter screen through the operation hole. After throttling the coolant, the coolant in the liquid inlet pipe is not easy to flow out from the operation hole to affect the cleaning operation of the technician on the filter screen, and at the same time reduce the waste of the coolant.

[0011] After the cleaning is completed, the technician rotates the sealing plate and makes the sealing plate block the operation hole. At the same time, the throttling assembly releases the throttling of the coolant, and then the locking assembly is used to fix the sealing plate and the operation pipe, which is convenient for the technician to clean the impurities on the filter screen, reduce the impurity residue in the coolant, and improve the heat exchange efficiency of the cooling system.

[0012] Optionally, mounting plates are arranged at the connection parts of the operation pipe and the liquid inlet pipe. Connection holes for the coolant to pass through are formed in the mounting plates. Two groups of throttling assemblies are provided, and the two groups of throttling assemblies are arranged oppositely. The throttling assembly includes opening and closing plates slidably arranged on one side of the mounting plate close to the inside of the operation pipe. A plurality of opening and closing plates are provided. The side walls of adjacent two opening and closing plates are slidably attached. The plurality of opening and closing plates are arranged at intervals along the circumference direction of the connection hole. The plurality of opening and closing plates slide close to / away from each other to block / communicate the connection hole. A synchronizing member for driving the plurality of opening and closing plates to slide synchronously is arranged on the operation pipe.

[0013] By adopting the above technical solution, during maintenance, technicians make multiple opening and closing plates slide on the mounting plate through a synchronizing member, causing the multiple opening and closing plates to slide close to each other and block the connection holes, so that the coolant is not easily introduced into the operation pipe through the connection holes, facilitating the technicians to clean the filter screen. After the cleaning is completed, the technicians operate the opening and closing plates to slide, and the multiple opening and closing plates slide away from each other and connect the connection holes with the operation pipe, facilitating the subsequent operation of the cooling component.

[0014] Optionally, the synchronizing member includes a rotating disk disposed on one side of the sealing plate close to the opening and closing plates. The side of the rotating disk away from the sealing plate is in movable contact with the opening and closing plates. A plurality of sliding holes are formed in the rotating disk. The plurality of sliding holes are all arranged along the radial direction of the rotating disk. A guiding post is provided on the opening and closing plate. A guiding groove is formed on one side of the mounting plate close to the opening and closing plate. The guiding groove is in the shape of a regular polygon, and the number of sides of the polygon is the same as the number of the opening and closing plates. One end of the guiding post is slidably adapted to the side wall of the guiding groove. The plurality of guiding posts correspond to the plurality of sliding holes one by one. The other end of the guiding post is movably inserted into the sliding hole and is slidably adapted to the inner wall of the sliding hole. A communication hole communicating with the connection hole is formed in the rotating disk.

[0015] By adopting the above technical solution, during maintenance, the technicians rotate the sealing plate to open the operation hole. The sealing plate drives the rotating disk to rotate. At this time, one end of the guiding post is located in the guiding groove, and the guiding groove limits the movement direction of the guiding post. At the same time, the other end of the guiding post is located in the sliding hole. Under the pressing action of the sliding hole, the opening and closing plates are driven to slide along the opening direction of the sliding hole. The plurality of sliding holes formed in the rotating disk drive the multiple opening and closing plates to slide close to each other and block the connection holes. Then the technicians clean the filter screen. After the cleaning is completed, the technicians rotate the sealing plate and block the operation hole with the sealing plate. The sealing plate drives the rotating disk to rotate, realizing that the multiple opening and closing plates slide away from each other and connecting the connection holes with the communication holes. When the technicians rotate the sealing plate, they drive the multiple opening and closing plates to slide synchronously, simplifying the operation steps.

[0016] Optionally, the locking assembly includes a block slidably disposed on the sealing plate. A clamping groove corresponding to the block is formed on the inner side wall of the operation hole. The block is movably inserted into the clamping groove. The block is in movable contact with the inner side wall of the clamping groove. A driving member for driving the block to slide is further provided on the sealing plate.

[0017] By adopting the above technical solution, after cleaning the filter net, the technician rotates the sealing plate to block the operation hole with the sealing plate, and then through the driving member, the clamping block slides towards the direction close to the clamping groove and inserts into the clamping groove, so that the clamping block abuts against the inner side wall of the clamping groove, thereby restricting the rotation of the sealing plate, realizing the fixation of the sealing plate and the operation pipe, and reducing the risk of coolant leakage caused by accidental rotation of the sealing plate during the operation of the vacuum pump body.

[0018] Optionally, the driving member includes a pressing block slidably arranged on the sealing plate. The end side of the pressing block close to the inside of the operation pipe is sharp. An abutting column is arranged on the side of the clamping block away from the clamping groove. The abutting column is in close contact with the inclined side of the pressing block. One end of the pressing block away from the inside of the operation pipe is rotatably provided with a pressing bolt, and the pressing bolt is in threaded fit with the sealing plate. An elastic member is arranged on the side of the clamping block away from the clamping groove, and the elastic member always makes the clamping block slide away from the clamping groove.

[0019] By adopting the above technical solution, during maintenance, the technician rotates the pressing bolt, and the pressing bolt drives the pressing block to slide away from the inside of the operation pipe, so that the inclined side of the pressing block is separated from one end of the abutting column away from the clamping block. At the same time, the elastic member drives the clamping block to slide away from the clamping groove, so that the clamping block and the clamping groove are in a separated state, realizing the unlocking of the sealing plate and the operation pipe. Then the technician drives the sealing plate to rotate by operating the pressing bolt.

[0020] After the maintenance is completed, the technician rotates the sealing plate until the clamping block and the clamping groove are in a relative position. Then the technician rotates the pressing bolt, and the pressing bolt drives the pressing block to slide towards the direction close to the inside of the operation pipe, so that the inclined side of the pressing block is in close contact with one end of the abutting column away from the clamping block, and drives the clamping block to slide towards the direction close to the clamping groove and insert into the clamping groove. Through the self-locking of the bolt, the pressing block is not easy to slide, realizing the fixation of the sealing plate and the operation pipe.

[0021] It is convenient for the technician to unlock / fix the sealing plate and the operation pipeline. At the same time, the pressing bolt acts as a handle, which is convenient for the technician to rotate the sealing plate.

[0022] Optionally, the filter net is in the shape of a cylinder with one end open. The open end of the filter net is communicated with the heat exchange cavity. An ear plate is arranged at the open end of the filter net. A plugging groove is formed on the side of the rotating disc away from the opening and closing plate. The ear plate is movably inserted into the plugging groove. A limiting groove for the ear plate to rotate is formed on the side wall of the plugging groove. The plugging groove is arranged along the axis direction of the rotating disc, and the limiting groove is arranged along the circumferential direction of the communication hole. The side wall of the ear plate is in movable contact with the inner side wall of the limiting groove. The ear plate is provided with a first magnetic attracting member, and the side wall of the limiting groove is provided with a second magnetic attracting member. The first magnetic attracting member and the second magnetic attracting member are magnetically connected.

[0023] By adopting the above technical solution, when cleaning the filter screen, the technician rotates the filter screen to make the ear plate rotate in the limiting groove until the ear plate is in the position opposite to the insertion groove. Then, the technician pulls out the filter screen, so that the ear plate is disengaged from the insertion groove. Immediately afterwards, the technician takes out the filter screen from the operation tube through the operation hole and cleans the filter screen, which is convenient for the technician to disassemble and clean the filter screen.

[0024] After cleaning the filter screen, the technician picks up the filter screen and moves the filter screen towards the direction close to the insertion groove to insert the ear plate into the insertion groove. Then, the technician rotates the filter screen to make the side wall of the ear plate fit with the inner side wall of the limiting groove. At the same time, the first magnetic part and the second magnetic part are magnetically fixed to each other, so that the ear plate is not easy to rotate in the limiting groove. The opposite inner side walls of the limiting groove perpendicular to the rotation axis of the rotating disk clamp the ear plate, so that the ear plate is not easy to move in the limiting groove, realizing the fixation of the filter screen and the rotating disk, which is convenient for the technician to install the filter screen. At the same time, the cylindrical filter screen increases the filtering area and the flow efficiency of the coolant, thereby improving the heat exchange efficiency.

[0025] Optionally, a plurality of first baffle plates are evenly spaced on the inner peripheral wall of the outer housing. There is a gap between the first baffle plate and the outer peripheral wall of the vacuum pump body. A plurality of second baffle plates are evenly spaced on the outer peripheral wall of the vacuum pump body. There is a gap between the second baffle plate and the inner peripheral wall of the outer housing. The first baffle plates and the second baffle plates are arranged in an alternating manner.

[0026] By adopting the above technical solution, when the temperature of the vacuum pump main body is too high, the power part works to pump the coolant into the heat exchange cavity. At this time, under the action of the first baffle plate and the second baffle plate, the flow direction of the coolant undergoes multiple bends, and the coolant flushes the inner peripheral wall of the outer housing and the outer peripheral wall of the vacuum pump body, so that the impurities in the coolant are not easy to accumulate and scale, which is beneficial to improving the heat exchange efficiency. At the same time, the first baffle plate and the second baffle plate also increase the heat exchange area of the coolant, further improving the heat exchange efficiency.

[0027] Optionally, a liquid supplement pipe is provided on the cooling tank. The other end of the liquid supplement pipe is connected to a liquid storage tank. A liquid supplement pump is provided on the liquid supplement pipe. A liquid level sensor is also provided on the cooling tank. The liquid supplement pump is electrically connected to the liquid level sensor.

[0028] By adopting the above technical solution, when the coolant leaks due to maintenance and sealing problems, and the coolant in the cooling tank is lower than the low liquid level set by the liquid level sensor, the liquid level sensor emits an electrical signal, and the replenishing pump operates. The replenishing pump drives the coolant in the liquid storage tank to flow through the replenishing pipe into the cooling tank until the coolant reaches the high liquid level set by the liquid level sensor. Then, the liquid level sensor emits an electrical signal and the water pump stops working, realizing the replenishment of the coolant in the cooling component, and it is not easy to reduce the heat exchange efficiency of the cooling component due to too little coolant, improving the operating efficiency of the vacuum pump main body.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. By providing a vacuum pump body, an outer housing coaxially arranged on the vacuum pump body, a cooling tank arranged on the outer housing, an inlet pipe and an outlet pipe arranged on the cooling tank, a power component arranged on the cooling tank, an operation pipe arranged on the inlet pipe, a filter screen arranged in the operation pipe, a sealing plate rotatably arranged on the inner peripheral wall of the operation pipe, a locking component for fixing the sealing plate and the operation pipe, and a throttling component for throttling the coolant. During maintenance, the technician rotates the sealing plate to open the operation hole. At this time, the filter screen is exposed from the operation hole, facilitating the technician to clean the filter screen. At the same time, the throttling component throttles the coolant, making it difficult for the coolant in the inlet pipe to flow out from the operation hole and affect the technician's cleaning operation of the filter screen, while reducing the waste of coolant. After cleaning, the technician rotates the sealing plate to block the operation hole and fixes the sealing plate and the operation pipe through the locking component. At the same time, the throttling component releases the throttling of the coolant, facilitating the technician to clean the impurities on the filter screen, reducing the impurity residue in the coolant, and improving the heat exchange efficiency of the cooling system;

[0031] 2. By providing a mounting plate at the connection between the operation pipe and the inlet pipe, a plurality of opening and closing plates arranged on the mounting plate, a guiding column arranged on the opening and closing plate, and a rotating disk arranged on the side of the sealing plate close to the opening and closing plate. The technician drives the rotating disk to rotate by rotating the sealing plate. At this time, one end of the guiding column is located in the guiding groove, and the guiding groove limits the movement direction of the guiding column. At the same time, the other end of the guiding column is located in the sliding hole. Under the pressing action of the sliding hole, the opening and closing plate is driven to slide along the opening direction of the sliding hole. The plurality of sliding holes opened on the rotating disk drive the plurality of opening and closing plates to slide close to / away from each other, realizing the blocking / connection of both the connection hole and the communication hole. When the technician rotates the sealing plate, the plurality of opening and closing plates are driven to slide synchronously, simplifying the operation steps;

[0032] 3. Set the clamping block on the sealing plate through sliding, the abutting column arranged on the clamping block, the abutting block slidably arranged on the sealing plate, the abutting bolt rotatably arranged on the abutting block, and the elastic member arranged on one side of the clamping block close to the abutting column. A clamping groove corresponding to the clamping block is opened on the side wall of the operation hole. During maintenance, the technician rotates the abutting bolt to separate the abutting block from the abutting column. At the same time, the elastic member drives the clamping block to slide away from the clamping groove, so that the clamping block and the clamping groove are in a separated state, realizing the unlocking of the sealing plate and the operation pipe. After the maintenance is completed, the technician rotates the abutting bolt, and the abutting bolt drives the abutting block to slide. The inclined side of the abutting block abuts against the abutting column, so that the clamping block is inserted into the clamping groove. At this time, the clamping block abuts against the inner side wall of the clamping groove, thereby restricting the rotation of the sealing plate and realizing the fixation of the sealing plate and the operation pipe, which is convenient for the technician to operate. Brief Description of the Drawings

[0033] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0034] Figure 2 is the connection structural schematic diagram of the clamping block and the clamping groove;

[0035] Figure 3 is the connection structural schematic diagram of the rotating disk and the opening and closing plate;

[0036] Figure 4 is the connection structural schematic diagram of the filter screen and the rotating disk;

[0037] Figure 5 is the connection structural schematic diagram of the first baffle plate and the second baffle plate.

[0038] Reference Numerals: 1, vacuum pump body; 2, cooling assembly; 21, outer housing; 22, cooling tank; 221, liquid inlet pipe; 222, liquid outlet pipe; 223, power member; 23, heat exchange cavity; 24, operation pipe; 241, operation hole; 242, sealing ring; 25, filter screen; 251, ear plate; 252, first magnetic member; 26, sealing plate; 27, first baffle plate; 28, second baffle plate; 29, flow dividing plate; 291, straight plate; 3, throttling assembly; 31, synchronizing member; 311, mounting plate; 3111, guiding groove; 3112, connecting hole; 312, rotating disk; 3121, sliding hole; 3122, communicating hole; 3123, inserting groove; 3124, limiting groove; 3125, second magnetic member; 32, opening and closing plate; 321, guiding column; 4, locking assembly; 41, clamping block; 42, clamping groove; 43, driving member; 431, abutting block; 432, abutting column; 433, abutting bolt; 434, adjusting groove; 435, screw hole; 436, elastic member; 437, knob; 5, liquid storage tank; 51, liquid replenishing pipe; 52, liquid replenishing pump; 53, liquid level sensor; 6, refrigeration assembly. Detailed Description of the Embodiment

[0039] The following further describes the present application in conjunction with the accompanying drawings. Figures 1-5 A further detailed description of the present application will be given below.

[0040] An embodiment of the present application discloses a cooling device for a water-ring vacuum pump. Referring to Figure 1 、 Figure 2 and Figure 5 , a cooling device for a water-ring vacuum pump includes a vacuum pump body 1 fixed on the ground and a cooling assembly 2. The cooling assembly 2 includes an outer housing 21 coaxially fixed on the vacuum pump body 1 and a cooling tank 22 fixed on the top of the outer housing 21. A coolant is stored in the cooling tank 22. A heat exchange chamber 23 is provided between the outer housing 21 and the vacuum pump body 1. An inlet pipe 221 and an outlet pipe 222 are fixed on the opposite outer side walls of the cooling tank 22. The inlet pipe 221 and the outlet pipe 222 are both communicated with the heat exchange chamber 23, and the connection points of the inlet pipe 221 and the outer housing 21 and the connection points of the outlet pipe 222 and the outer housing 21 are on the same horizontal plane. A power member 223 for pumping the coolant into the heat exchange chamber 23 through the inlet pipe 221 is fixed on the side wall of the cooling tank 22. The power member 223 is communicated with the inlet pipe 221. In the present application, the power member 223 is a circulation pump, and a refrigeration assembly 6 for cooling the coolant is fixed on the cooling tank 22.

[0041] An operation pipe 24 is coaxially fixed on the inlet pipe 221. The operation pipe 24 is arranged vertically. A filter screen 25 is provided in the operation pipe 24. An operation hole 241 is opened on the side wall of the operation pipe 24. The operation hole 241 is rectangular. A sealing plate 26 for movably blocking the operation hole 241 is rotatably connected in the operation pipe 24. The sealing plate 26 is movably attached to the inner peripheral wall of the operation pipe 24. The rotation axis of the sealing plate 26 is perpendicular to the ground. A sealing ring 242 corresponding to the operation hole 241 is fixed on the inner peripheral wall of the operation pipe 24. The sealing ring 242 is movably abutted against the side of the sealing plate 26 away from the inside of the operation pipe 24.

[0042] In order to fix the sealing plate 26 and the operation pipe 24 and reduce the risk of coolant leakage caused by accidental rotation of the sealing plate 26 during the operation of the vacuum pump body 1, a locking assembly 4 for fixing the sealing plate 26 and the operation pipe 24 is further provided on the sealing plate 26. Referring to Figure 2 , the locking assembly 4 includes a block 41 slidably connected to the sealing plate 26. The block 41 slides along the height direction of the operation pipe 24. A slot 42 corresponding to the block 41 is opened on the inner side wall of the operation hole 241. The block 41 is movably inserted into the slot 42 and is movably abutted against the inner side wall of the slot 42. There are two sets of the block 41 and the slot 42. The two sets of the block 41 and the two sets of the slot 42 correspond to each other, and the two sets of the slot 42 are respectively located on the opposite inner side walls of the operation hole 241 in the horizontal direction.

[0043] To facilitate the unlocking / fixing of the sealing plate 26 by technicians, a driving member 43 for driving the sliding of the driving block 41 is further provided on the sealing plate 26. Refer to Figure 2 As shown in Figure 2 , an adjustment groove 434 is formed on the sealing plate 26. The driving member 43 includes a pressing block 431 slidably disposed in the adjustment groove 434, and the pressing block 431 is in active fit with the inner peripheral wall of the adjustment groove 434. In this application, the cross-section of the adjustment groove 434 is rectangular. In other embodiments, the cross-section of the adjustment groove 434 can also be polygonal shapes such as triangular, pentagonal, hexagonal, etc., as long as the pressing block 431 can slide in the adjustment groove 434 without rotating. The pressing block 431 slides in the horizontal direction, and the end side of the pressing block 431 close to the inside of the operation tube 24 is sharp. On the side of the two groups of blocks 41 away from the card slot 42, a pressing column 432 is fixed. The pressing column 432 is slidably disposed on the sealing plate 26, and the sliding direction of the pressing column 432 is consistent with the height direction of the operation tube 24. The two groups of pressing columns 432 are in contact and pressing with the two inclined sides of the pressing block 431.

[0044] A pressing bolt 433 is rotatably connected to the side of the pressing block 431 away from the inside of the operation tube 24. The pressing bolt 433 protrudes from the sealing plate 26. The sealing plate 26 is provided with a screw hole 435 threadedly adapted to the pressing bolt 433. A knob 437 is fixed to the end of the pressing bolt 433 protruding from the sealing plate 26. An elastic member 436 is provided on the side of the block 41 away from the card slot 42. The elastic member 436 always makes the block 41 slide in a direction away from the card slot 42. In this application, the elastic member 436 is a compression spring.

[0045] When the temperature of the vacuum pump body 1 is too high, the power member 223 operates to pump the coolant in the cooling box 22 into the heat exchange cavity 23 through the liquid inlet pipe 221. At the same time, the impurities in the coolant are filtered through the provided filter net 25 to achieve heat exchange of the vacuum pump body 1. Finally, the coolant enters the cooling box 22 through the liquid outlet pipe 222, and the coolant is cooled by the refrigeration component 6. In this way, the cycle is realized to cool down the vacuum pump body 1.

[0046] During maintenance, the technician rotates the knob 437 to drive the pressing bolt 433 to drive the pressing block 431 to slide in the adjustment groove 434 in a direction away from the inside of the operation tube 24, so that the inclined side of the pressing block 431 is separated from the end of the two pressing columns 432 away from the block 41. At the same time, the elastic member 436 drives the block 41 to slide in a direction away from the card slot 42, and further makes the block 41 and the card slot 42 in a separated state, realizing the unlocking of the sealing plate 26 and the operation tube 24;

[0047] Then, the technician drives the sealing plate 26 to rotate by operating the knob 437 to open the operation hole 241, facilitating the rotation of the sealing plate 26. At this time, the filter screen 25 is exposed from the operation hole 241, facilitating the technician to clean the filter screen 25, reducing the residue of impurities in the coolant, and improving the heat exchange efficiency of the cooling system.

[0048] After the cleaning is completed, the technician rotates the sealing plate 26 and makes the sealing plate 26 block the operation hole 241. Then, the technician rotates the knob 437, so that the tightening bolt 433 drives the tightening block 431 to slide towards the direction close to the inside of the operation pipe 24, so that the inclined side of the tightening block 431 abuts against one end of the two tightening columns 432 away from the clamping block 41, and drives both clamping blocks 41 to slide along the axial direction of the rotation of the sealing plate 26, so that the clamping blocks 41 are inserted into the clamping grooves 42, and the inner side walls of the clamping blocks 41 and the clamping grooves 42 are abutted tightly, thereby restricting the rotation of the sealing plate 26. Through the self-locking of the tightening bolt 433 and the screw hole 435, the fixing of the sealing plate 26 and the operation pipe 24 is realized, reducing the risk of coolant leakage caused by accidental rotation of the sealing plate 26 during the operation of the vacuum pump body.

[0049] Furthermore, in order to facilitate the technician to intercept the coolant when cleaning the filter screen 25, so that the coolant in the liquid inlet pipe 221 is not easy to flow out from the operation hole 241 and affect the cleaning operation of the technician on the filter screen 25, a throttling component 3 is provided on the operation pipe 24. Refer to Figure 2 and Figure 3 , mounting plates 311 are fixedly arranged at the connection parts of the operation pipe 24 and the liquid inlet pipe 221, and the diameter of the operation pipe 24 is larger than that of the liquid inlet pipe 221. A connection hole 3112 for the coolant to pass through is opened on the mounting plate 311. There are two groups of throttling components 3, and the two groups of throttling components 3 are arranged oppositely. The throttling component 3 includes an opening and closing plate 32 slidably arranged on one side of the mounting plate 311 close to the inside of the operation pipe 24. There are multiple opening and closing plates 32, and the side walls of two adjacent opening and closing plates 32 are slidably attached. The multiple opening and closing plates 32 are arranged at intervals along the circumference direction of the connection hole 3112. The multiple opening and closing plates 32 slide close to / away from each other to block / communicate the connection hole 3112. In this application, the opening and closing plate 32 is set to six and the opening and closing plate 32 is fan-shaped. The included angle between the sliding directions of any two adjacent opening and closing plates 32 is 60°. In other embodiments, the opening and closing plate 32 can also be three, five, six, etc. The included angle between the sliding directions of two adjacent opening and closing plates 32 changes accordingly. As long as the multiple opening and closing plates 32 slide close to / away from each other to block / communicate the connection hole 3112, it is acceptable.

[0050] At the same time, in order to drive the six opening and closing plates 32 to slide synchronously and simplify the operation steps, a synchronizing member 31 for driving the six opening and closing plates 32 to slide synchronously is provided on the operation pipe 24. Refer to Figure 3, the synchronizing member 31 includes a rotating disk 312 fixed to one side of the sealing plate 26 close to the opening / closing plate 32. The side of the rotating disk 312 away from the sealing plate 26 is movably attached to the opening / closing plate 32. A plurality of sliding holes 3121 are formed in the rotating disk 312. In this application, the number of the sliding holes 3121 provided is the same as the number of the opening / closing plates 32 and is six in total. The six sliding holes 3121 are arranged along the radial direction of the rotating disk 312. A guiding post 321 is fixed to the opening / closing plate 32. Both ends of the guiding post 321 protrude from the opening / closing plate 32. The six guiding posts 321 correspond to the six sliding holes 3121 one by one. A guiding groove 3111 is formed on one side of the mounting plate 311 close to the opening / closing plate 32. The guiding groove 3111 is in a regular hexagon shape. One end of the guiding post 321 is slidably adapted to the side wall of the guiding groove 3111. The other end of the guiding post 321 is movably inserted into the sliding hole 3121 and is slidably adapted to the inner wall of the sliding hole 3121. A communicating hole 3122 communicating with the connecting hole 3112 is formed in the rotating disk 312.

[0051] During maintenance, the technician rotates the sealing plate 26 to open the operation hole 241. The sealing plate 26 drives the rotating disk 312 to rotate. At this time, one end of the guiding post 321 is located in the guiding groove 3111. The guiding groove 3111 limits the movement direction of the guiding post 321. At the same time, the other end of the guiding post 321 is located in the sliding hole 3121. Under the pressing action of the sliding hole 3121, the opening / closing plate 32 is driven to slide along the opening direction of the sliding hole 3121. The six sliding holes 3121 formed in the rotating disk 312 drive the six opening / closing plates 32 to slide close to each other and block the connecting hole 3112. Then the technician cleans the filter screen 25;

[0052] After the cleaning is completed, the technician rotates the sealing plate 26 and the sealing plate 26 blocks the operation hole 241. At the same time, the sealing plate 26 drives the rotating disk 312 to rotate, realizing that the six opening / closing plates 32 slide away from each other and the connecting hole 3112 communicates with the communicating hole 3122. When the technician rotates the sealing plate 26, the six opening / closing plates 32 are driven to slide synchronously, simplifying the operation steps.

[0053] Further, in order to facilitate the technician to disassemble / install the filter screen 25, so as to facilitate the cleaning of the filter screen 25, refer to Figure 4, the filter screen 25 is in the shape of a cylinder with one end open. The outer peripheral wall of the filter screen 25 is in movable fit with the inner wall of the communication hole 3122. The open end of the filter screen 25 is communicated with the heat exchange chamber 23. An ear plate 251 is fixed at the open end of the filter screen 25. On the side of the rotating disk 312 away from the opening and closing plate 32, a plugging slot 3123 is provided. The plugging slot 3123 is opened along the axial direction of the rotating disk 312. The ear plate 251 is movably inserted into the plugging slot 3123. A limiting slot 3124 for the ear plate 251 to rotate is provided on the side wall of the plugging slot 3123. The limiting slot 3124 is opened along the circumferential direction of the rotating disk 312. The side wall of the ear plate 251 is in movable fit with the inner side wall of the limiting slot 3124. There are two ear plates 251, and the two ear plates 251 are arranged at equal intervals along the circumferential direction of the filter cylinder. There are also two plugging slots 3123 and two limiting slots 3124. The two ear plates 251 correspond to the two plugging slots 3123 one by one, and the two ear plates 251 correspond to the two limiting slots 3124 one by one. A first magnetic member 252 is fixed on the end side of the ear plate 251, and a second magnetic member 3125 is fixed on the side wall of the limiting slot 3124. The first magnetic member 252 and the second magnetic member 3125 are magnetically connected.

[0054] When cleaning the filter screen 25, the technician rotates the filter screen 25 so that both ear plates 251 rotate in the limiting slot 3124 until both ear plates 251 are in the position opposite to the plugging slot 3123. Then the technician pulls out the filter screen 25, so that the ear plate 251 is disengaged from the plugging slot 3123. Immediately afterwards, the technician takes out the filter screen 25 from the operation tube 24 through the operation hole 241 and cleans the filter screen 25, which is convenient for the technician to disassemble and clean the filter screen 25;

[0055] After the cleaning of the filter screen 25 is completed, the technician picks up the filter screen 25 and moves the filter screen 25 towards the direction close to the plugging slot 3123, so that both ear plates 251 are inserted into the plugging slot 3123. Then the technician rotates the filter screen 25 so that the side wall of the ear plate 251 is in fit with the inner side wall of the limiting slot 3124. At the same time, the first magnetic member 252 and the second magnetic member 3125 are magnetically fixed, making it difficult for the ear plate 251 to rotate in the limiting slot 3124. The opposite two inner side walls of the limiting slot 3124 perpendicular to the rotation axis of the rotating disk 312 clamp the ear plate 251, making it difficult for the ear plate 251 to move relative to the limiting slot 3124, realizing the fixation of the filter screen 25 and the rotating disk 312, which is convenient for the technician to install the filter screen 25. At the same time, the cylindrical filter screen 25 increases the filtering area and the flow efficiency of the coolant, thereby improving the heat exchange efficiency.

[0056] Further, in order to prevent impurities in the coolant from accumulating in the pipeline and improve the heat exchange efficiency, refer to Figure 5, a plurality of first baffle plates 27 are evenly fixed on the inner peripheral wall of the outer casing 21 at intervals. There is a gap between the first baffle plates 27 and the outer peripheral wall of the vacuum pump body 1. A plurality of second baffle plates 28 are evenly fixed on the outer peripheral wall of the vacuum pump body 1 at intervals. There is a gap between the second baffle plates 28 and the inner peripheral wall of the outer casing 21. The first baffle plates 27 and the second baffle plates 28 are arranged alternately. In this application, both the first baffle plates 27 and the second baffle plates 28 are provided with six. A flow dividing plate 29 is fixed on the outer peripheral wall of the vacuum pump body 1. The flow dividing plate 29 is located at the connection between the liquid inlet pipe 221 and the outer casing 21. There are two groups of flow dividing plates 29, and the two groups of flow dividing plates are arranged oppositely. The flow dividing plate 29 close to the liquid inlet pipe 221 is composed of two straight plates 291 with an included angle fixed at one end away from the vacuum pump body 1, and the two straight plates 291 are symmetrically arranged along the horizontal plane of the flow dividing plate 29.

[0057] When the temperature of the vacuum pump main body is too high, the power component 223 works to pump the coolant into the heat exchange cavity 23. At this time, due to the function of the flow dividing plate 29, the coolant is evenly distributed up and down in the heat exchange cavity 23, improving the heat exchange efficiency. When the coolant enters the heat exchange cavity 23 from the liquid inlet pipe 221, it flows into the upper and lower cavities of the heat exchange cavity 23 respectively, and the flow direction is deflected under the action of the first baffle plates 27 and the second baffle plates 28, so that the coolant flushes the inner peripheral wall of the outer casing 21 and the outer peripheral wall of the vacuum pump body 1, making it difficult for impurities in the coolant to accumulate and scale, which is beneficial to improving the heat exchange efficiency. At the same time, the first baffle plates 27 and the second baffle plates 28 also increase the heat exchange area of the coolant, further improving the heat exchange efficiency. Then it converges at the connection between the outer casing 21 and the liquid outlet pipe 222 and enters the liquid outlet pipe 222 to realize the circulation of the coolant.

[0058] Further, in order to supplement the coolant in the cooling tank 22, refer to Figure 1 , a liquid supplement pipe 51 is fixed at the top of the cooling tank 22. The other end of the liquid supplement pipe 51 is fixedly connected with a liquid storage tank 5. A liquid supplement pump 52 is fixed on the liquid supplement pipe 51. The liquid supplement pump 52 is communicated with the liquid storage tank 5. A liquid level sensor 53 is also fixed on the cooling tank 22.

[0059] When the coolant in the cooling tank 22 is lower than the low liquid level set by the liquid level sensor 53, the liquid level sensor 53 emits an electrical signal, and the liquid supplement pump 52 works. The liquid supplement pump 52 drives the coolant in the liquid storage tank 5 to flow through the liquid supplement pipe 51 and enter the cooling tank 22 until the coolant reaches the high liquid level set by the liquid level sensor 53. The liquid level sensor 53 emits an electrical signal and the liquid supplement pump 52 stops working, realizing the supplement of the coolant in the cooling component 2, and it is not easy to reduce the heat exchange efficiency of the cooling component 2 due to too little coolant, improving the operating efficiency of the vacuum pump main body.

[0060] The implementation principle of a water-ring vacuum pump cooling device according to an embodiment of the present application is as follows: When the temperature of the vacuum pump body 1 is too high, the power component 223 operates to pump the coolant in the cooling tank 22 into the heat exchange chamber 23 through the liquid inlet pipe 221. At the same time, the filter screen 25 filters impurities in the coolant. Under the action of the flow dividing plate 29, the coolant is divided, and the flow direction of the coolant is deflected through the baffle plate to achieve heat exchange with the vacuum pump body 1. Finally, the coolant enters the cooling tank 22 through the liquid outlet pipe 222, and the coolant is cooled by the refrigeration component 6. This cycle is repeated to achieve the cooling of the vacuum pump body 1.

[0061] During maintenance, the technician rotates the knob 437 to drive the tightening nut to drive the tightening block 431 to slide, so that the tightening block 431 disengages from the two tightening posts 432. Under the action of the compression spring, the locking block 41 and the locking groove 42 are in a separated state, realizing the unlocking of the sealing plate 26 and the operation pipe 24. Then, the technician rotates the sealing plate 26 through the knob 437 to open the operation hole 241. At the same time, the sealing plate 26 drives the two groups of rotating disks 312 to rotate, and the rotating disks 312 drive the six opening and closing plates 32 to slide close to each other to block the connection hole 3112. Then, the technician rotates the filter screen 25 and pulls it out upward to remove the filter screen 25 and clean the filter screen 25.

[0062] After cleaning, the technician inserts the two ear plates 251 of the filter screen 25 into the insertion slots 3123, and rotates the filter screen 25 so that the two ear plates 251 are attached to the inner side wall of the limiting groove 3124 and are magnetically fixed through the limiting groove 3124 to fix the filter screen 25. Then, the technician rotates the sealing plate 26 to block the operation hole 241 with the sealing plate 26. At the same time, the sealing plate 26 drives the two groups of rotating disks 312 to rotate, and the rotating disks 312 drive the six opening and closing plates 32 to move away from each other so that the connection hole 3112 is communicated with the communication hole 3122, facilitating the subsequent operation of the cooling component 2. Then, the technician rotates the knob 437 to drive the tightening nut to drive the tightening block 431 to slide, so that the inclined side of the tightening block 431 abuts against the tightening post 432 and drives the locking block 41 to slide and insert into the locking groove 42. The locking post abuts against the inner side wall of the locking groove 42, and through the self-locking of the bolt, the fixing of the sealing plate 26 and the operation pipe 24 is realized.

[0063] When the coolant is lost due to maintenance and sealing problems, and the coolant in the cooling tank 22 is lower than the low liquid level set by the liquid level sensor 53, the liquid level sensor 53 emits an electrical signal, and the liquid filling pump 52 operates. The liquid filling pump 52 drives the coolant in the liquid storage tank 5 to flow through the liquid filling pipe 51 into the cooling tank 22 until the coolant reaches the high liquid level set by the liquid level sensor 53. Then, the liquid level sensor 53 emits an electrical signal, and the liquid pump stops working, realizing the replenishment of the coolant in the cooling component 2.

[0064] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A water ring vacuum pump cooling device, comprising a vacuum pump body (1) and a cooling assembly (2), characterized in that: The cooling assembly (2) comprises an outer shell (21) coaxially arranged on the vacuum pump body (1) and a cooling box (22) arranged on the outer shell (21); a cooling liquid is stored in the cooling box (22); a heat exchange cavity (23) is provided between the outer shell (21) and the vacuum pump body (1); a liquid inlet pipe (221) and a liquid outlet pipe (222) are provided on the cooling box (22); the liquid inlet pipe (221) and the liquid outlet pipe (222) are both connected to the heat exchange cavity (23); and a power part (223) is also provided on the cooling box (22) for pumping the cooling liquid into the heat exchange cavity (23) through the liquid inlet pipe (221); An operating tube (24) is provided on the liquid inlet tube (221), a filter screen (25) is provided in the operating tube (24), an operating hole (241) is provided on the side wall of the operating tube (24), a sealing plate (26) is rotatably provided in the operating tube (24) for movably sealing the operating hole (241), the sealing plate (26) is movably fitted with the inner peripheral wall of the operating tube (24), a locking assembly (4) is provided on the sealing plate (26) for fixing the sealing plate (26) and the operating tube (24), and a flow interception assembly (3) for intercepting the coolant is provided on the operating tube (24).

2. A water ring vacuum pump cooling device according to claim 1, characterized in that: A mounting plate (311) is provided at the connection between the operating tube (24) and the liquid inlet tube (221), and a connecting hole (3112) for the coolant to pass through is provided on the mounting plate (311). Two groups of the intercepting components (3) are provided, and the two groups of the intercepting components (3) are arranged relative to each other. The intercepting components (3) include an opening and closing plate (32) slidably arranged on one side of the mounting plate (311) close to the inside of the operating tube (24). A plurality of the opening and closing plates (32) are provided, and the side walls of two adjacent opening and closing plates (32) are slidably fitted. The plurality of opening and closing plates (32) are arranged at intervals along the circumference direction of the connecting hole (3112). The plurality of opening and closing plates (32) slide towards / away from each other to block / connect the connecting hole (3112). A synchronizing member (31) for driving the plurality of opening and closing plates (32) to slide synchronously is provided on the operating tube (24).

3. A water ring vacuum pump cooling device according to claim 2, characterized in that: The synchronous component (31) comprises a rotating disk (312) provided on a side of the sealing plate (26) close to the opening and closing plate (32); a side of the rotating disk (312) away from the sealing plate (26) is movably fitted with the opening and closing plate (32); a sliding hole (3121) is provided on the rotating disk (312); a plurality of sliding holes (3121) are provided, and the plurality of sliding holes (3121) are arranged along the radial direction of the rotating disk (312); a guide column (321) is provided on the opening and closing plate (32); a guide column (321) is provided on a side of the mounting plate (311) close to the opening and closing plate (32); The guide groove (3111) is in the shape of a regular polygon, and the number of sides of the polygon is consistent with the number of the opening and closing plates (32); one end of the guide column (321) is slidably fitted with the side wall of the guide groove (3111); a plurality of the guide columns (321) correspond one to one with a plurality of the sliding holes (3121); the other end of the guide column (321) is movably inserted into the sliding hole (3121) and is slidably fitted with the inner wall of the sliding hole (3121); and a connecting hole (3122) connected to the connecting hole (3112) is provided on the rotating disk (312).

4. A water ring vacuum pump cooling device according to claim 3, characterized in that: The locking assembly (4) comprises a clamping block (41) slidably disposed on the sealing plate (26); a clamping groove (42) corresponding to the clamping block (41) is provided on the inner side wall of the operating hole (241); the clamping block (41) is movably inserted into the clamping groove (42); the clamping block (41) and the inner side wall of the clamping groove (42) are movably pressed against each other; and a driving member (43) for driving the clamping block (41) to slide is also provided on the sealing plate (26).

5. A water ring vacuum pump cooling device according to claim 4, characterized in that: The driving member (43) comprises a clamping block (431) slidably arranged on the sealing plate (26); the end side of the clamping block (431) close to the operating tube (24) is sharp; a clamping column (432) is provided on a side of the clamping block (41) away from the clamping groove (42); the clamping column (432) is in close contact with the inclined side of the clamping block (431) and is in close contact with the clamping block (431); a clamping bolt (433) is rotatably arranged on one end of the clamping block (431) away from the operating tube (24); the clamping bolt (433) is threadably adapted to the sealing plate (26); an elastic member (436) is provided on a side of the clamping block (41) away from the clamping groove (42); the elastic member (436) always causes the clamping block (41) to slide in a direction away from the clamping groove (42).

6. A water ring vacuum pump cooling device according to claim 5, characterized in that: The filter screen (25) is in the shape of a cylinder with one end open. The open end of the filter screen (25) is in communication with the heat exchange chamber (23). An ear plate (251) is provided at the open end of the filter screen (25). A plug-in slot (3123) is provided on a side of the rotating disk (312) away from the opening and closing plate (32). The ear plate (251) is movably inserted into the plug-in slot (3123). A limiting slot (3124) for the ear plate (251) to rotate is provided on a side wall of the plug-in slot (3123). The plug-in slot (3123) is opened along the axial direction of the rotating disk (312), the limiting slot (3124) is opened along the circumference direction of the connecting hole (3122), the side wall of the ear plate (251) is movably fitted with the inner wall of the limiting slot (3124), the ear plate (251) is provided with a first magnetic attraction component (252), and the side wall of the limiting slot (3124) is provided with a second magnetic attraction component (3125), and the first magnetic attraction component (252) and the second magnetic attraction component (3125) are magnetically connected.

7. A water ring vacuum pump cooling device according to claim 1, characterized in that: A plurality of first baffles (27) are evenly spaced apart on the inner peripheral wall of the outer shell (21), a gap is left between the first baffles (27) and the outer peripheral wall of the vacuum pump body (1), a plurality of second baffles (28) are evenly spaced apart on the outer peripheral wall of the vacuum pump body (1), a gap is left between the second baffles (28) and the inner peripheral wall of the outer shell (21), and the first baffles (27) and the second baffles (28) are arranged in an alternating manner.

8. The water ring vacuum pump cooling device according to claim 1, characterized in that: A liquid infusion tube (51) is provided on the cooling box (22), the other end of the liquid infusion tube (51) is connected to the liquid storage box (5), a liquid infusion pump (52) is provided on the liquid infusion tube (51), a liquid level sensor (53) is also provided in the cooling box (22), and the liquid infusion pump (52) is electrically connected to the liquid level sensor (53).

Images