Working fluid cooling mechanism of water ring vacuum pump

Abstract

The invention provides a working fluid cooling mechanism of a water ring vacuum pump. The working fluid cooling mechanism comprises a motor with an output shaft connected with a pump body. The vacuum driving ring is located between the pump body and the motor, and an output shaft of the motor is arranged in the pump body and the vacuum driving ring in a penetrating mode to drive the pump body; the lock shaft driving piece is rotationally connected to the interior of the vacuum driving ring; the cooling box is fixed to the bottom face of the vacuum driving ring, the outer wall of one side of the cooling box is attached to the outer wall of the pump body, and the upper side and the lower side of the cooling box communicate with the interior of the motor and the interior of the pump body correspondingly; the two-way valve body is hermetically embedded in the inner side of the top of the air inlet of the vacuum driving ring; according to the water ring vacuum pump, the vacuum driving ring can be used for detecting the temperature, the driving ring is connected with the driving main shaft of the motor, the vacuum driving ring is driven, liquid nitrogen and cold air generated by volatilization of the liquid nitrogen are conveyed into the motor and the pump body, automatic cooling of the water ring vacuum pump is achieved, and the working performance of the motor and the working performance of a water ring of the pump body are guaranteed.

Description

Technical Field

[0001] The invention relates to the field of water ring vacuum pumps, and in particular to a working fluid cooling mechanism for a water ring vacuum pump. Background Art

[0002] A water ring vacuum pump is a vacuum pump that relies on the rotation of an impeller and a water ring formed by a working fluid (usually water) to achieve suction, compression and exhaust. It is a variable displacement vacuum pump. Through the eccentric rotation of the impeller inside the pump body, the working fluid forms a rotating water ring around the impeller. As the impeller rotates, the volume of the space inside the water ring changes, thereby achieving gas suction, compression and exhaust.

[0003] Water ring vacuum pumps are usually used to extract and transport air, and due to the presence of the internal water ring, the safety of extracting flammable and explosive air is very high. At the same time, the water ring inside the water ring vacuum pump can also play a self-cooling function. However, due to the high utilization rate of air extraction by the pump body and the need to extract vacuum, an extremely high speed is required to compress and extract the air, and a long period of idling is required. The water ring and motor inside the pump body will inevitably enter a high temperature state, affecting the working performance of the water ring vacuum pump.

[0004] Therefore, we made improvements to this and proposed a working fluid cooling mechanism for a water ring vacuum pump. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing water ring vacuum pump will enter a high temperature state under high power operation, which will affect the working performance.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides the following water ring vacuum pump working fluid cooling mechanism to improve the above-mentioned problem.

[0007] The specific application is as follows: A water ring vacuum pump working fluid cooling mechanism, comprising The output shaft is connected to a motor with a pump body; A vacuum drive ring is located between the pump body and the motor, and the motor output shaft is arranged inside the pump body and the vacuum drive ring to drive the pump body; Rotating a lock shaft drive member connected to the interior of the vacuum drive ring; A cooling box fixed to the bottom surface of the vacuum driving ring, wherein the outer wall of one side of the cooling box is in contact with the outer wall of the pump body, and the upper and lower sides of the cooling box are respectively connected to the motor and the inside of the pump body; A two-way valve body is sealingly engaged with the inner side of the top of the air inlet of the vacuum drive ring; A temperature-sensing trigger component is fixed on the inner wall of the pump body. The temperature-sensing trigger component drives the locking shaft driving component to lock and transmit with the motor output shaft when the temperature change inside the pump body occurs. When the locking shaft driving component rotates, it drives the vacuum driving ring to absorb external air and transport it to the inside of the cooling box and then to the motor and the pump body.

[0008] As a preferred technical solution of the present application, a control box is fixed to the top of the motor, and a driving spindle is connected to the output end of the motor. The driving spindle is passed through the pump body and the vacuum driving ring.

[0009] As a preferred technical solution of the present application, a pump tube connector is provided at one end of the pump body away from the vacuum driving ring, and the pump tube connector is closely connected to the surface of the pump body, a first air inlet cavity is opened below the side where the pump tube connector is connected to the pump body, a first air inlet pipe is connected to one side of the top of the pump tube connector, the first air inlet pipe is communicated with the inside of the first air inlet cavity, a first air outlet cavity is opened above the side where the pump tube connector is connected to the pump body, a first air outlet pipe is connected to the side of the top of the pump tube connector away from the first air inlet pipe, the first air outlet pipe is communicated with the first air outlet cavity, an eccentric cavity is opened inside the pump body, the driving spindle is penetrated into one side of the inside of the eccentric cavity, and a water ring impeller is connected to one end of the driving spindle located inside the eccentric cavity, an air inlet arc port is opened below the side where the eccentric cavity is connected to the pump tube connector, an air outlet arc port is opened above the air inlet arc port, the air inlet arc port is communicated with the first air inlet cavity, and the air outlet arc port is communicated with the first air outlet cavity.

[0010] As a preferred technical solution of the present application, a second eccentric cavity is provided on one side of the interior of the vacuum drive ring, a second air inlet cavity is provided on the side of the second eccentric cavity close to the motor, a second air inlet port is provided on the top of the second air inlet cavity, the second air inlet port is connected to the outside of the vacuum drive ring, the two-way valve body is embedded in the second air inlet port, a second air outlet is provided on the side of the second eccentric cavity away from the second air inlet cavity, a cold box connecting cavity is provided at the bottom of the second air outlet, the bottom of the cold box connecting cavity is connected to the interior of the cooling box, and a power-on cavity is provided on the side of the vacuum drive ring away from the second eccentric cavity.

[0011] As a preferred technical solution of the present application, the locking shaft driving component includes a contact ring, which is fixed inside the power-carrying cavity; a second water ring wheel is provided on one side of the contact ring, which is located inside the second eccentric cavity; the second water ring wheel and the contact ring are sleeved on the outside of the driving main shaft; one end of the central axis of the second water ring wheel is passed through the power-carrying cavity; the outer wall of one end of the central axis of the second water ring wheel located inside the power-carrying cavity is connected to a locking shaft ring; a power-receiving ring is provided on one side of the locking shaft ring; the power-receiving ring is fixed on the outer wall of the central axis of the second water ring wheel; the position where the central axis of the second water ring wheel is connected to the power-carrying cavity is sealed and rotatably connected to the inner wall of the power-carrying cavity; the outer wall of the power-receiving ring is connected to a pantograph distributed in an annular manner with equal distances; the pantograph is elastically fitted and slidably connected to the contact ring.

[0012] As a preferred technical solution of the present application, a liquid nitrogen warehouse is provided at the bottom inner side of the cooling box, a cold air warehouse is provided at the top of the liquid nitrogen warehouse, a connecting hole is provided between the cold air warehouse and the liquid nitrogen warehouse, and a second two-way valve is connected to one side of the top of the cooling box, the upper part of the second two-way valve is connected to the cold box connecting cavity, and the bottom of the second two-way valve is connected to the inside of the cold air warehouse.

[0013] As a preferred technical solution of the present application, a pump body cooling zone is provided on the side of the liquid nitrogen warehouse close to the pump body, and the pump body cooling zone includes a liquid nitrogen flow pipe opened inside the outer wall of the pump body, one end of the liquid nitrogen flow pipe is connected with the interior of the liquid nitrogen warehouse, and the other end of the liquid nitrogen flow pipe is provided with a liquid ring groove, one side of the liquid ring groove is provided with annular equidistantly distributed spiral grooves, and the end of the spiral groove away from the liquid nitrogen flow pipe is provided with an air pressure groove, and the liquid nitrogen warehouse is provided with a motor cooling zone on the side close to the motor, and the motor cooling zone includes a third two-way valve connected to the interior of the cold air warehouse, a cold air ring groove is provided on the end of the inner wall of the motor close to the cooling box, and the end of the third two-way valve away from the cold air warehouse is connected with the cold air ring groove, and the cold air ring groove is provided with annular equidistantly distributed spiral cold air grooves on the side away from the third two-way valve, and the other end of the spiral cold air groove is provided with an air pressure warehouse.

[0014] As a preferred technical solution of the present application, the two-way valve body includes a tube, a middle valve plate is provided at the center of the tube, a central air vent is opened at the center of the middle valve plate, annular air vents are opened equidistantly around the circumference of the central air vent, the top surface of the middle valve plate is fitted and connected with an upper valve plate, annular connecting holes equidistantly distributed in an annular shape are opened inside the upper valve plate, the annular connecting holes are relatively connected with the annular air vent, the bottom surface of the middle valve plate is fitted and connected with a lower valve plate, a central connecting hole is opened at the center of the lower valve plate, and the central connecting hole is connected to the central air vent.

[0015] As a preferred technical solution of the present application, elastic push rods distributed equidistantly in an annular manner are fixed on the circumferential positions of the top surface of the upper valve plate and the bottom surface of the lower valve plate, and one end of the elastic push rod away from the upper valve plate and the lower valve plate is fixed to the inner wall of the barrel, and the elastic push rod includes a retractable vertical rod, which is fixed to the inner wall of the motor, and a force spring is provided inside the retractable vertical rod, and a sliding rod is provided inside the retractable vertical rod for limited sliding, and one end of the sliding rod away from the retractable vertical rod is respectively fixed to the upper valve plate and the lower valve plate, and both ends of the force spring are respectively fixed to the inner wall of the retractable vertical rod and the outer wall of the sliding rod.

[0016] As a preferred technical solution of the present application, the temperature-sensing trigger component includes a sealed gas chamber fixed on the inner wall of the pump body, a hydrogen chamber is opened on the inner side of the sealed gas chamber, a sealing slider is slidingly provided on the side of the hydrogen chamber away from the pump body, a trigger switch is fixed on the side of the sealing slider away from the pump body, a wire trigger piece is provided at a position close to the trigger switch inside the hydrogen chamber, a wire is connected to a side of the wire trigger piece away from the trigger switch, the wire is electrically connected to a contact ring and a control box respectively, a limit ring is fixed at the position where the wire trigger piece is connected inside the hydrogen chamber, the limit ring is sleeved on the outside of the wire trigger piece, a reset spring is sleeved on the outside of the limit ring, and the other end of the reset spring is connected to the outer surface of the sealing slider.

[0017] Compared with the prior art, the present invention has the following beneficial effects: In the scheme of the present application: through the design of connecting the vacuum drive ring with the inside of the cooling box, during the temperature rise process of the water ring vacuum pump in a long-term high-power working state, the vacuum drive ring can be used to detect the temperature, the vacuum drive ring can be connected to the driving spindle of the motor, the vacuum drive ring can be driven, external air can be absorbed into the cooling box, and liquid nitrogen and cold air generated by the volatilization of liquid nitrogen can be transported to the inside of the motor and the pump body, thereby realizing automatic cooling of the water ring vacuum pump and ensuring the working performance of the motor and the water ring of the pump body.

[0018] 1. The present invention provides a vacuum drive ring at the position where the motor is connected to the pump body. When the motor and the pump body are heated up, the vacuum drive ring and the drive spindle are automatically locked, so that the second water ring wheel inside the vacuum drive ring rotates, absorbs external air, and sends it into the cooling box at high pressure, so as to realize the flow of air and liquid nitrogen inside the cooling box and cool the motor and the pump body.

[0019] 2. The present invention provides a cooling box at the bottom of the vacuum driving ring, and the cold air bin and the liquid nitrogen bin inside the cooling box are spirally connected with the inner space of the outer wall of the motor and the pump body respectively. When high-pressure air is poured into the cooling box, the cold air and the liquid nitrogen are squeezed, and the liquid nitrogen and the cold air are squeezed into the liquid ring groove and the spiral cold air groove respectively, so as to cool the motor and the pump body and improve the long-term high-power working stability of the water ring vacuum pump.

[0020] 3. The present invention provides a two-way valve body at the air intake port of the vacuum drive ring, which can provide two-way ventilation for the air inlet and has a static blocking function to prevent the outflow of coolant. A temperature-sensing trigger is provided on the side of the pump body connected to the vacuum drive ring, which is electrically connected to the motor and the lock shaft drive component. When the pump body is heated up, the high-temperature expansion performance of hydrogen can be used to drive the switch to open, thereby realizing the automatic operation of the cooling function. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the overall structure of a working fluid cooling mechanism of a water ring vacuum pump provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the structure viewed from above is shown; Figure 3 for Figure 1 The schematic diagram of the structure of the middle section shown; Figure 4 for Figure 3 Schematic diagram of structural decomposition shown; Figure 5 for Figure 4 The schematic diagram of the structure of the pump body and the pump pipe connection shown in the figure is a cross-sectional exploded view; Figure 6 for Figure 5 The schematic structural diagram of the cross-section of the pump tube connector shown; Figure 7 for Figure 4 The schematic diagram of the motor and the cross-section of the outer wall of the pump body shown; Figure 8 for Figure 4 The structure of the vacuum drive ring is shown in an enlarged cross-sectional view; Fig. 9 for Figure 3 The schematic diagram of the structure of the vacuum drive ring connected to the two-way valve body is shown in cross-section; Fig.10 for Figure 1 The structure of the temperature-sensitive trigger is shown in an exploded and enlarged schematic diagram; Fig.11 for Figure 4 The structural exploded diagram of the lock shaft driving member shown; Fig.12 for Figure 2 The schematic diagram of the structural cross-section and enlarged diagram of the connection position between the vacuum drive ring and the cooling box is shown.

[0022] Indicated in the figure: 1. Motor; 11. Control box; 12. Driving spindle; 2. Pump body; 21. Pump pipe connector; 211. First air inlet cavity; 212. First air inlet pipe; 213. First air outlet cavity; 214. First air outlet pipe; 22. Air inlet arc; 23. Air outlet arc; 24. Eccentric cavity; 25. Water ring impeller; 3. Vacuum drive ring; 31. Second eccentric cavity; 32. Second air inlet cavity; 33. Second air inlet; 34. Second air outlet; 35. Cold box connecting cavity; 36. Power-on cavity; 4. Lock shaft drive member; 41. Contact ring; 42. Second water ring wheel; 43. Lock shaft ring; 44. Power receiving ring; 45. Pantograph; 5. Cooling box; 51. Liquid nitrogen warehouse; 52. Cold air warehouse; 53. Connecting hole; 54. Second two-way valve; 55. Pump cooling area; 551. Liquid nitrogen flow pipe; 552. Liquid ring groove; 553. Spiral groove; 554. Air pressure groove; 56. Motor cooling area; 561. Third two-way valve; 562. Cold air ring groove; 563. Spiral cold air groove; 564. Air pressure warehouse; 6. Two-way valve body; 61. Bore tube; 62. Middle valve disc; 63. Annular vent hole; 64. Center vent hole; 65. Upper valve disc; 66. Annular connecting hole; 67. Lower valve disc; 68. Center connecting hole; 69. Elastic push rod; 691. Retractable vertical rod; 692. Force spring; 693. Sliding rod; 7. Temperature-sensitive trigger; 71. Sealed gas chamber; 72. Hydrogen chamber; 73. Sealed slider; 74. Trigger switch; 75. Wire trigger piece; 76. Wire; 77. Limiting ring; 78. Reset spring. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] As described in the background art, when a water ring vacuum pump is working at high power, it will enter a high temperature state, which will affect the working performance.

[0025] In order to solve this technical problem, the present invention provides a water ring vacuum pump working fluid cooling mechanism, which is applied to the automatic cooling of the water ring vacuum pump under long-term high-power working state, and can maintain ultra-high working performance.

[0026] Specifically, please refer to Figure 1-Figure 12 The water ring vacuum pump working fluid cooling mechanism specifically includes: The output shaft is connected to the motor 1 with the pump body 2; A vacuum drive ring 3 is located between the pump body 2 and the motor 1, and the output shaft of the motor 1 is passed through the pump body 2 and the vacuum drive ring 3 to drive the pump body 2; Rotate the lock shaft driving member 4 connected to the inside of the vacuum driving ring 3; A cooling box 5 is fixed to the bottom surface of the vacuum driving ring 3, wherein the outer wall of one side of the cooling box 5 is in contact with the outer wall of the pump body 2, and the upper and lower sides of the cooling box 5 are respectively connected to the motor 1 and the inside of the pump body 2; A two-way valve body 6 is sealed and embedded inside the top of the air inlet of the vacuum drive ring 3; A temperature-sensing trigger component 7 is fixed inside the outer wall of the pump body 2. The temperature-sensing trigger component 7 drives the locking shaft driving component 4 to lock and transmit with the output shaft of the motor 1 when the temperature change inside the pump body 2. When the locking shaft driving component 4 rotates, it drives the vacuum driving ring 3 to absorb external air and transport it to the inside of the cooling box 5 and transport it to the inside of the motor 1 and the pump body 2.

[0027] A working fluid cooling mechanism for a water ring vacuum pump provided by the present invention is designed to be connected to the inside of a cooling box 5 through a vacuum drive ring 3. During the temperature rise process of the water ring vacuum pump in a long-term high-power working state, the vacuum drive ring 3 can be used to detect the temperature, the vacuum drive ring 3 can be connected to the driving spindle 12 of the motor 1, the vacuum drive ring 3 can be driven, external air can be absorbed into the cooling box 5, liquid nitrogen and cold air generated by the volatilization of liquid nitrogen can be transported to the inside of the motor 1 and the pump body 2, automatic cooling of the water ring vacuum pump can be achieved, and the working performance of the water ring of the motor 1 and the pump body 2 can be ensured.

[0028] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] Example 1 Please refer to Figure 1-Figure 12 A water ring vacuum pump working fluid cooling mechanism, a control box 11 is fixed on the top of the motor 1, and a driving spindle 12 is connected to the output end of the motor 1. The driving spindle 12 is inserted into the pump body 2 and the vacuum driving ring 3.

[0032] The end of the pump body 2 away from the vacuum drive ring 3 is provided with a pump tube connector 21, and the pump tube connector 21 is closely connected to the surface of the pump body 2. A first air inlet cavity 211 is provided below the side of the pump tube connector 21 connected to the pump body 2. A first air inlet pipe 212 is connected to the top side of the pump tube connector 21. The first air inlet pipe 212 is connected to the inside of the first air inlet cavity 211. A first air outlet cavity 213 is provided above the side of the pump tube connector 21 connected to the pump body 2. A first air outlet cavity 213 is provided above the side of the pump tube connector 21 connected to the pump body 2. Tube 214, the first air outlet pipe 214 is connected to the first air outlet cavity 213, an eccentric cavity 24 is opened inside the pump body 2, the driving main shaft 12 is passed through one side of the eccentric cavity 24, and the end of the driving main shaft 12 located inside the eccentric cavity 24 is connected to a water ring impeller 25, an air inlet arc port 22 is opened below the side of the eccentric cavity 24 connected to the pump pipe connector 21, an air outlet arc port 23 is opened above the air inlet arc port 22, the air inlet arc port 22 is connected to the first air inlet cavity 211, and the air outlet arc port 23 is connected to the first air outlet cavity 213.

[0033] A second eccentric cavity 31 is provided on one side of the interior of the vacuum drive ring 3, a second air inlet cavity 32 is provided on the side of the second eccentric cavity 31 close to the motor 1, a second air inlet port 33 is provided on the top of the second air inlet cavity 32, the second air inlet port 33 is connected to the outside of the vacuum drive ring 3, the two-way valve body 6 is embedded in the second air inlet port 33, a second air outlet 34 is provided on the side of the second eccentric cavity 31 away from the second air inlet cavity 32, a cold box connecting cavity 35 is provided at the bottom of the second air outlet 34, the bottom of the cold box connecting cavity 35 is connected to the inside of the cooling box 5, and a power-on cavity 36 is provided on the side of the vacuum drive ring 3 away from the second eccentric cavity 31.

[0034] The locking shaft driving member 4 includes a contact ring 41, which is fixed inside the power-carrying cavity 36. One side of the contact ring 41 is provided with a second water ring wheel 42 located inside the second eccentric cavity 31. The second water ring wheel 42 and the contact ring 41 are sleeved on the outside of the driving main shaft 12. One end of the central axis of the second water ring wheel 42 is passed through the power-carrying cavity 36. The outer wall of the end of the central axis of the second water ring wheel 42 located inside the power-carrying cavity 36 is connected with a locking shaft ring 43. One side of the locking shaft ring 43 is provided with a power-receiving ring 44, which is fixed on the outer wall of the central axis of the second water ring wheel 42. The position where the central axis of the second water ring wheel 42 is connected to the power-carrying cavity 36 is sealed and rotatably connected to the inner wall of the power-carrying cavity 36. The outer wall of the power-receiving ring 44 is connected with an annular pantograph 45 distributed equidistantly. The pantograph 45 is elastically fitted and slidably connected to the contact ring 41.

[0035] A vacuum drive ring 3 is provided at the position where the motor 1 is connected to the pump body 2. When the motor 1 and the pump body 2 are heated up, the vacuum drive ring 3 and the drive spindle 12 can be automatically locked to allow the second water ring wheel 42 inside the vacuum drive ring 3 to rotate, absorb external air, and send it into the cooling box 5 under high pressure, thereby realizing the flow of air and liquid nitrogen inside the cooling box 5 to cool the motor 1 and the pump body 2.

[0036] Example 2 The working fluid cooling mechanism of a water ring vacuum pump provided in Example 1 is further optimized. Specifically, Figure 1-Figure 12 A liquid nitrogen bin 51 is provided at the bottom inner side of the cooling box 5, a cold air bin 52 is provided at the top of the liquid nitrogen bin 51, a connecting hole 53 is provided between the cold air bin 52 and the liquid nitrogen bin 51, and a second two-way valve 54 is connected to one side of the top of the cooling box 5, the upper part of the second two-way valve 54 is connected to the cold box connecting cavity 35, and the bottom of the second two-way valve 54 is connected to the inside of the cold air bin 52.

[0037] A pump cooling zone 55 is provided on the side of the liquid nitrogen warehouse 51 close to the pump body 2. The pump cooling zone 55 includes a liquid nitrogen flow pipe 551 opened inside the outer wall of the pump body 2. One end of the liquid nitrogen flow pipe 551 is connected to the inside of the liquid nitrogen warehouse 51. A liquid annular groove 552 is provided on the other end of the liquid nitrogen flow pipe 551. One side of the liquid annular groove 552 is provided with annular spiral grooves 553 distributed equidistantly. An air pressure groove 554 is provided on the end of the spiral groove 553 away from the liquid nitrogen flow pipe 551. A motor cooling zone 56 is provided on the side near the motor 1, and the motor cooling zone 56 includes a third two-way valve 561 connected to the interior of the cold air bin 52. A cold air annular groove 562 is provided on the inner side of the outer wall of the motor 1 near the cooling box 5. The end of the third two-way valve 561 away from the cold air bin 52 is connected to the cold air annular groove 562. The side of the cold air annular groove 562 away from the third two-way valve 561 is provided with annular equidistantly distributed spiral cold air grooves 563, and the other end of the spiral cold air groove 563 is provided with an air pressure bin 564.

[0038] A cooling box 5 is provided at the bottom of the vacuum driving ring 3, and the cold air bin 52 and the liquid nitrogen bin 51 inside the cooling box 5 are spirally connected with the inner space of the outer wall of the motor 1 and the pump body 2 respectively. When high-pressure air is poured into the cooling box 5, the cold air and the liquid nitrogen are squeezed, and the liquid nitrogen and the cold air are squeezed into the liquid ring groove 552 and the spiral cold air groove 563 respectively, so as to cool the motor 1 and the pump body 2 and improve the long-term high-power working stability of the water ring vacuum pump.

[0039] Example 3 The working fluid cooling mechanism of a water ring vacuum pump provided in Example 1 or 2 is further optimized. Specifically, Figure 1-Figure 12As shown, the two-way valve body 6 includes a tube 61, a middle valve plate 62 is provided at the center of the tube 61, a center vent hole 64 is opened at the center of the middle valve plate 62, and an annular vent holes 63 are opened equidistantly around the circumference of the center vent hole 64; an upper valve plate 65 is fitted and connected to the top surface of the middle valve plate 62, an annular communicating holes 66 are opened in an annular manner equidistantly distributed inside the upper valve plate 65, and the annular communicating holes 66 are relatively connected to the annular vent holes 63; a lower valve plate 67 is fitted and connected to the bottom surface of the middle valve plate 62, a center communicating hole 68 is opened at the center of the lower valve plate 67, and the center communicating hole 68 is connected to the center vent hole 64.

[0040] Circumferential positions of the top surface of the upper valve plate 65 and the bottom surface of the lower valve plate 67 are fixed with circular equidistantly distributed elastic push rods 69, one end of the elastic push rod 69 away from the upper valve plate 65 and the lower valve plate 67 is fixed to the inner wall of the bobbin 61, the elastic push rod 69 includes a retractable vertical rod 691, the retractable vertical rod 691 is fixed to the inner wall of the motor 1, a force spring 692 is arranged inside the retractable vertical rod 691, a slide rod 693 is provided inside the retractable vertical rod 691 for limited sliding, the end of the slide rod 693 away from the retractable vertical rod 691 is respectively fixed to the upper valve plate 65 and the lower valve plate 67, and the two ends of the force spring 692 are respectively fixed to the inner wall of the retractable vertical rod 691 and the outer wall of the slide rod 693.

[0041] The temperature-sensing trigger component 7 includes a sealed gas chamber 71 fixed inside the outer wall of the pump body 2, a hydrogen chamber 72 is opened inside the sealed gas chamber 71, a sealing slider 73 is slid on the side of the hydrogen chamber 72 away from the pump body 2, a trigger switch 74 is fixed on the side of the sealing slider 73 away from the pump body 2, a wire trigger piece 75 is provided near the trigger switch 74 in the hydrogen chamber 72, a wire trigger piece 75 is connected to a side of the wire trigger piece 75 away from the trigger switch 74, and the wire 76 is electrically connected to the contact ring 41 and the control box 11 respectively, a limit ring 77 is fixed at the position where the wire trigger piece 75 is connected inside the hydrogen chamber 72, the limit ring 77 is sleeved on the outside of the wire trigger piece 75, a reset spring 78 is sleeved on the outside of the limit ring 77, and the other end of the reset spring 78 is connected to the outer surface of the sealing slider 73.

[0042] A two-way valve body 6 is provided at the air intake port of the vacuum drive ring 3, which can provide two-way ventilation for the air inlet and has the function of static blocking at the same time, thereby preventing the outflow of coolant. A temperature-sensing trigger component 7 is provided on the side of the pump body 2 connected to the vacuum drive ring 3, which is electrically connected to the motor 1 and the shaft lock drive component 4. When the pump body 2 heats up, the high-temperature expansion performance of hydrogen can be utilized to drive the switch to open, thereby realizing the automatic operation of the cooling function.

[0043] The use process of the working fluid cooling mechanism of a water ring vacuum pump provided by the present invention is as follows: When the water ring vacuum pump is in a long-term high-power working state, as the driving main shaft 12 drives the water ring impeller 25 to rotate, the water ring impeller 25 will drive the working fluid inside the eccentric cavity 24. As the water ring impeller 25 rotates at a high speed, the working fluid will rotate in the annular environment of the inner wall of the eccentric cavity 24. Driven by its own inertia and centrifugal force, the working fluid will rotate around the eccentric cavity 24, forming an outer seal with the water ring impeller 25, and the single-side space will gradually shrink.

[0044] When the temperature of the motor 1 and the pump body 2 gradually rises under high-performance and long-term driving, the sealed air chamber 71 inside the temperature-sensing trigger component 7 will receive the temperature conduction of the working fluid inside the pump body 2 and the pump body 2 itself. The hydrogen inside the hydrogen chamber 72 inside the sealed air chamber 71 will be increased by the heat, and its own volume will expand. At this time, the hydrogen will push the sealing slider 73 to slide and squeeze the reset spring 78, so that the trigger switch 74 on the other side of the sealing slider 73 fits with the wire trigger piece 75. At this time, the wire trigger piece 75 realizes the connection between the positive and negative poles, and the wire 76 is connected to one end of the contact ring 41 and is energized.

[0045] When the contact ring 41 is energized, the electricity will be transmitted to the inside of the power receiving ring 44 through the pantograph 45 in contact with it. The power receiving ring 44 will transmit the electricity to the inside of the locking ring 43. The locking ring 43 will start when energized and lock itself with the driving main shaft 12. At this time, the driving main shaft 12 will drive the locking ring 43 to rotate. The rotation of the locking ring 43 will drive the second water ring wheel 42 connected to it to rotate. The rotation of the second water ring wheel 42 will drive the working fluid inside the second eccentric chamber 31.

[0046] It should be noted that the locking ring 43 is the shaft lock of the motor 1. The motor 1 shaft lock adopts the principle of electromagnetic adsorption. It can adsorb the locking ring 43 and the driving main shaft 12 to complete the connection and fixation through the principle of like-sex attraction after electromagnetic power is turned on. The pantograph 45 is always in contact with the contact ring 41 through elasticity and has the function of power conduction. Therefore, when the pump body 2 is in a high temperature state, the locking ring 43 will always be locked with the driving main shaft 12.

[0047] Similar to the working principle of the water ring vacuum pump mentioned above, the second eccentric chamber 31 will absorb external air through the second air inlet 33 and enter the second air inlet chamber 32. The air entering the second air inlet chamber 32 will be absorbed and compressed by the four water ring wheels and transported to the inside of the second air outlet 34. The high-pressure gas entering the second air outlet 34 will be transported to the inside of the second two-way valve 54 through the cold box connecting chamber 35. The high-pressure gas enters the cold air warehouse 52 through the second two-way valve 54. The high-pressure gas entering the cold air warehouse 52 will apply pressure to the liquid nitrogen warehouse 51 and the cold air warehouse 52. The pressure inside the cold air warehouse 52 will transport the internal cold air through the third two-way valve 561 to the inside of the cold air ring groove 562. The cold air will enter the spiral cold air groove 563 through the cold air ring groove 562, so that the cold air is evenly distributed in the inside of the motor 1 casing in a spiral ring shape, thereby realizing the cooling of the motor 1.

[0048] It should be noted that the high-pressure cold air entering the spiral cold air groove 563 will squeeze the low-pressure air inside the spiral cold air groove 563 toward the inside of the air pressure bin 564, so that the high-temperature gas is uniformly compressed inside the air pressure bin 564, allowing the cold air to enter the inside of the spiral cold air groove 563. At the same time, the cold air entering through the spiral cold air groove 563 can cool the high-temperature gas, reduce the volume of the gas, and further increase the compression ratio of the gas, allowing more cold air to enter the spiral cold air groove 563 and be uniformly compressed inside the air pressure bin 564.

[0049] The interior of the liquid nitrogen tank 51 is under pressure, and the internal liquid nitrogen will flow into the liquid ring groove 552 through the liquid nitrogen flow pipe 551. The liquid nitrogen entering the liquid ring groove 552 will flow evenly to the circumference of the outer shell of the pump body 2 through the spiral groove 553, cooling the pump body 2, reducing the temperature of the working fluid inside the pump body 2, and cooling the water ring impeller 25 and the drive spindle 12 through the coolant and the pump body 2.

[0050] It should be noted that the apertures of the liquid annular groove 552 and the spiral groove 553 are relatively small, so when the liquid nitrogen flows to the inside thereof, it will flow rapidly inside the spiral groove 553 under pressure, so that the entire pump body 2 can be completely cooled by the liquid nitrogen under pressure.

[0051] The tail end of the spiral groove 553 is provided with an air pressure groove 554 which can collect and compress the air inside the originally tiny spiral groove 553 , so that the liquid nitrogen can cool the pump body 2 around the circumference of the pump body 2 .

[0052] When the temperature of the pump body 2 itself cools down, the temperature inside the hydrogen chamber 72 will drop due to the conduction of the coolant and the pump body 2. Then, as the hydrogen pressure decreases, the sealing slider 73 is pushed by the pressure of the return spring 78 to separate the trigger switch 74 from the wire trigger sheet 75. Then, the contact ring 41 is powered off, the locking ring 43 is no longer locked with the drive spindle 12, and the second water ring wheel 42 loses driving force and no longer transports high-pressure gas to the inside of the cooling box 5.

[0053] The high-pressure gas inside the cooling box 5 will be subjected to the compressed gas pressure inside the air pressure tank 554 and the air pressure chamber 564, and the cold air and liquid nitrogen will be transported to the inside of the liquid nitrogen chamber 51 and the cold air chamber 52, thereby completing the return of the liquid nitrogen and the cold air. During the process of returning the liquid nitrogen and the cold air, the excess gas inside the cooling box 5 will be discharged to the position of the second air inlet 33 through the second two-way valve 54 and the second eccentric cavity 31.

[0054] It should be noted that the second two-way valve 54, the third two-way valve 561 and the two-way valve body 6 have the same structure. When suction is provided inside the second eccentric chamber 31, the lower issuing piece inside the two-way valve body 6 will be moved downward by the suction, exerting a thrust on the slide rod 693, allowing the slide rod 693 to push the force spring 692 to shrink toward the inside of the contraction vertical rod 691. When the lower issuing piece is separated from the middle valve piece 62, the annular vent hole 63 of the upper valve piece 65 will be connected with the annular connecting hole 66 of the middle valve piece 62, so that the air is transported to the inside of the second eccentric chamber 31 through the central connecting hole 68 of the lower valve piece 67.

[0055] When the air inside the second eccentric chamber 31 is discharged to the outside, the air will push the upper valve plate 65 upward, so that the air is discharged through the central connecting hole 68 of the lower valve plate 67 and the central vent hole 64 of the middle valve plate 62, and the air is discharged through the annular connecting hole 66 of the upper valve plate 65.

[0056] In a pressure-free state, the two-way valve body 6 will push the upper valve plate 65 and the lower valve plate 67 to fit with the middle valve plate 62 under the elastic force of the force spring 692, thereby sealing the tube 61 and preventing the working fluid inside the second water ring wheel 42 from entering impurities and dust and flowing out.

[0057] It should be noted that the contact ring 41 and the pantograph 45 in the present invention are made of high-quality materials such as high-strength copper-magnesium alloy, which have high-strength wear resistance and conductivity. At the same time, the pantograph 45 has elasticity and can maintain working performance under a little wear.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A water ring vacuum pump working fluid cooling mechanism, characterized in that: include The output shaft is connected to a motor (1) having a pump body (2); A vacuum drive ring (3) is located between the pump body (2) and the motor (1), wherein the output shaft of the motor (1) passes through the pump body (2) and the vacuum drive ring (3) to drive the pump body (2); Rotating a shaft lock driving member (4) connected to the inside of the vacuum driving ring (3); A cooling box (5) is fixed on the bottom surface of the vacuum drive ring (3), the outer wall of one side of the cooling box (5) is in contact with the outer wall of the pump body (2), and the upper and lower sides of the cooling box (5) are respectively connected to the motor (1) and the inside of the pump body (2); A two-way valve body (6) is sealed and embedded inside the top of the air inlet of the vacuum drive ring (3); A temperature-sensing trigger component (7) is fixed inside the outer wall of the pump body (2). The temperature-sensing trigger component (7) drives the locking shaft driving component (4) to lock and transmit with the output shaft of the motor (1) when the temperature changes inside the pump body (2). When the locking shaft driving component (4) is in a rotating state, it drives the vacuum driving ring (3) to absorb external air and transport it to the inside of the cooling box (5) and to the inside of the motor (1) and the pump body (2).

2. A water ring vacuum pump working fluid cooling mechanism according to claim 1, characterized in that: A control box (11) is fixed on the top of the motor (1), and a driving spindle (12) is connected to the output end of the motor (1), and the driving spindle (12) is inserted into the pump body (2) and the vacuum driving ring (3).

3. A water ring vacuum pump working fluid cooling mechanism according to claim 2, characterized in that: A pump tube connector (21) is provided at one end of the pump body (2) away from the vacuum drive ring (3), and the pump tube connector (21) is closely connected to the surface of the pump body (2). A first air inlet cavity (211) is provided below the side of the pump tube connector (21) connected to the pump body (2), and a first air inlet pipe (212) is connected to one side of the top of the pump tube connector (21), and the first air inlet pipe (212) is communicated with the inside of the first air inlet cavity (211). A first air outlet cavity (213) is provided above the side of the pump tube connector (21) connected to the pump body (2), and a first air outlet pipe (213) is connected to the one side of the top of the pump tube connector (21) away from the first air inlet pipe (212). 214), the first air outlet pipe (214) is connected to the first air outlet cavity (213), an eccentric cavity (24) is provided inside the pump body (2), the driving main shaft (12) is passed through one side of the eccentric cavity (24), one end of the driving main shaft (12) located inside the eccentric cavity (24) is connected to a water ring impeller (25), an air inlet arc opening (22) is provided below a side of the eccentric cavity (24) connected to the pump pipe connector (21), an air outlet arc opening (23) is provided above the air inlet arc opening (22), the air inlet arc opening (22) is connected to the first air inlet cavity (211), and the air outlet arc opening (23) is connected to the first air outlet cavity (213).

4. A water ring vacuum pump working fluid cooling mechanism according to claim 1, characterized in that: A second eccentric cavity (31) is provided on one side of the interior of the vacuum drive ring (3); a second air inlet cavity (32) is provided on the side of the second eccentric cavity (31) close to the motor (1); a second air inlet port (33) is provided on the top of the second air inlet cavity (32); the second air inlet port (33) is connected to the outside of the vacuum drive ring (3); the two-way valve body (6) is embedded in the second air inlet port (33); a second air outlet port (34) is provided on the side of the second eccentric cavity (31) away from the second air inlet cavity (32); a cold box connecting cavity (35) is provided at the bottom of the second air outlet port (34); the bottom of the cold box connecting cavity (35) is connected to the inside of the cooling box (5); and a power supply cavity (36) is provided on the side of the interior of the vacuum drive ring (3) away from the second eccentric cavity (31).

5. A water ring vacuum pump working fluid cooling mechanism according to claim 4, characterized in that: The lock shaft driving member (4) comprises a contact ring (41), the contact ring (41) is fixed inside the power-carrying cavity (36), one side of the contact ring (41) is located inside the second eccentric cavity (31) and is provided with a second water ring wheel (42), the second water ring wheel (42) and the contact ring (41) are sleeved on the outside of the driving main shaft (12), one end of the central axis of the second water ring wheel (42) is passed through the power-carrying cavity (36), and the central axis of the second water ring wheel (42) is located inside the power-carrying cavity (36). The outer wall of one end of the interior is connected to a locking ring (43), and a power receiving ring (44) is provided on one side of the locking ring (43). The power receiving ring (44) is fixed to the outer wall of the central axis of the second water ring wheel (42). The position where the central axis of the second water ring wheel (42) is connected to the power supply cavity (36) is sealed and rotatably connected to the inner wall of the power supply cavity (36). The outer wall of the power receiving ring (44) is connected to an annularly equidistantly distributed pantograph (45), and the pantograph (45) is elastically fitted and slidably connected to the contact ring (41).

6. A water ring vacuum pump working fluid cooling mechanism according to claim 1, characterized in that: A liquid nitrogen bin (51) is provided at the bottom of the inner side of the cooling box (5), a cold air bin (52) is provided at the top of the liquid nitrogen bin (51), a connecting hole (53) is provided between the cold air bin (52) and the liquid nitrogen bin (51), a second two-way valve (54) is connected to one side of the top of the cooling box (5), the upper part of the second two-way valve (54) is connected to the cold box connecting cavity (35), and the bottom of the second two-way valve (54) is connected to the inside of the cold air bin (52).

7. A water ring vacuum pump working fluid cooling mechanism according to claim 6, characterized in that: A pump body cooling zone (55) is provided on a side of the liquid nitrogen warehouse (51) close to the pump body (2), and the pump body cooling zone (55) comprises a liquid nitrogen flow pipe (551) arranged inside the outer wall of the pump body (2), one end of the liquid nitrogen flow pipe (551) is in communication with the inside of the liquid nitrogen warehouse (51), and the other end of the liquid nitrogen flow pipe (551) is provided with a liquid annular groove (552), one side of the liquid annular groove (552) is provided with annular spiral grooves (553) distributed in equal intervals, and one end of the spiral groove (553) away from the liquid nitrogen flow pipe (551) is provided with a gas pressure groove (554), and the liquid nitrogen warehouse (51) is close to the pump body (2). A motor cooling zone (56) is provided on the side near the motor (1), and the motor cooling zone (56) includes a third two-way valve (561) connected to the interior of the cold air bin (52); a cold air annular groove (562) is provided on the inner side of the outer wall of the motor (1) near the cooling box (5); the end of the third two-way valve (561) away from the cold air bin (52) is connected to the cold air annular groove (562); the side of the cold air annular groove (562) away from the third two-way valve (561) is provided with annular spiral cold air grooves (563) distributed equidistantly; and the other end of the spiral cold air groove (563) is provided with an air pressure bin (564).

8. A water ring vacuum pump working fluid cooling mechanism according to claim 1, characterized in that: The two-way valve body (6) comprises a tube (61), a middle valve plate (62) is provided at the center of the tube (61), a center vent hole (64) is provided at the center of the middle valve plate (62), an annular vent holes (63) are provided equidistantly distributed around the circumference of the center vent hole (64), an upper valve plate (65) is fitted and connected to the top surface of the middle valve plate (62), an annular communication hole (66) is provided in an annularly equidistantly distributed manner inside the upper valve plate (65), the annular communication hole (66) is relatively connected to the annular vent hole (63), the lower valve plate (67) is fitted and connected to the bottom surface of the middle valve plate (62), a center communication hole (68) is provided at the center of the lower valve plate (67), and the center communication hole (68) is connected to the center vent hole (64).

9. A water ring vacuum pump working fluid cooling mechanism according to claim 8, characterized in that: Circumferential positions of the top surface of the upper valve plate (65) and the bottom surface of the lower valve plate (67) are fixed with elastic push rods (69) distributed equidistantly in a ring shape. One end of the elastic push rod (69) away from the upper valve plate (65) and the lower valve plate (67) is fixed to the inner wall of the barrel (61). The elastic push rod (69) comprises a retractable vertical rod (691). The retractable vertical rod (691) is fixed to the inner wall of the motor (1). A force spring (692) is provided inside the retractable vertical rod (691). A slide rod (693) is provided inside the retractable vertical rod (691) for limited sliding. One end of the slide rod (693) away from the retractable vertical rod (691) is respectively fixed to the upper valve plate (65) and the lower valve plate (67). Two ends of the force spring (692) are respectively fixed to the inner wall of the retractable vertical rod (691) and the outer wall of the slide rod (693).

10. A water ring vacuum pump working fluid cooling mechanism according to claim 5, characterized in that: The temperature-sensitive trigger element (7) comprises a sealed gas chamber (71) fixed inside the outer wall of the pump body (2); a hydrogen chamber (72) is provided inside the sealed gas chamber (71); a sealing slider (73) is slidably provided on the side of the hydrogen chamber (72) away from the pump body (2); a trigger switch (74) is fixed on the side of the sealing slider (73) away from the pump body (2); a wire trigger piece (75) is provided inside the hydrogen chamber (72) at a position close to the trigger switch (74); and the wire trigger piece (75) is provided at a position close to the trigger switch (74). A wire (76) is connected to a side of the hydrogen chamber (75) away from the trigger switch (74), and the wire (76) is electrically connected to the contact ring (41) and the control box (11) respectively. A limit ring (77) is fixed to the position of the wire trigger plate (75) connected inside the hydrogen chamber (72). The limit ring (77) is sleeved on the outside of the wire trigger plate (75). A reset spring (78) is sleeved on the outside of the limit ring (77), and the other end of the reset spring (78) is connected to the outer surface of the sealing slider (73).

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