A method for regulating the gas volume of a water ring vacuum pump to adapt to working conditions

Abstract

The present invention discloses a method for adjusting the gas volume of a water ring vacuum pump to adapt to working conditions, which specifically includes the following steps: Step 1: Water ring formation: Start the vacuum pump to rotate the impeller, and the rotation of the impeller causes the water in the internal cavity of the vacuum pump to form a water ring, and Step 2: Intake and exhaust: A closed cavity is formed between the impeller hub and the liquid ring, and the gas enters the closed cavity on the suction side at a certain flow rate through the suction port of the distribution plate. As the impeller rotates, the gas sucked into the closed cavity is compressed and discharged through the exhaust port on the exhaust side. The present invention relates to the technical field of water ring vacuum pumps. The method for adjusting the gas volume of a water ring vacuum pump to adapt to working conditions starts a driving motor when it is necessary to adjust the intake and exhaust volume, and the driving motor rotates and the second disc rotates through the cooperation of the gear and the ring gear, and the intake and exhaust ports on the second disc block the area of ​​the intake and exhaust ports on the first disc, thereby changing the size of the intake and exhaust volume.

Description

Technical Field

[0001] The invention relates to the technical field of water ring vacuum pumps, in particular to a method for regulating the gas volume of a water ring vacuum pump to adapt to working conditions. Background Art

[0002] The water ring vacuum pump is a positive displacement pump. The pump body is filled with an appropriate amount of liquid (usually water) as the working medium. When the eccentrically installed impeller rotates, the liquid is thrown around due to the centrifugal force, forming a closed circular ring similar to the shape of the pump chamber. At this time, a closed cavity is formed between the impeller hub and the liquid ring. The gas enters the closed cavity on the suction side through the suction port of the distribution plate at a certain flow rate. As the impeller rotates, the gas sucked into the closed cavity is compressed and discharged through the exhaust port on the exhaust side.

[0003] The existing water ring hollow pump performs intake and exhaust through the intake and exhaust ports opened on the disc during operation. Since the size of the intake and exhaust ports is fixed, it is inconvenient to control the intake and exhaust volume and cannot adapt to different working conditions. In addition, when there is a problem with the exhaust of the vacuum pump, the exhaust volume suddenly decreases, causing the exhaust gas to flow back, affecting the normal operation of the vacuum pump. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for regulating the gas volume of a water ring vacuum pump to adapt to working conditions, which solves the problem that the intake and exhaust volume of the existing water ring vacuum pump is inconvenient to control and cannot adapt to different working conditions and the backflow caused by sudden reduction of the exhaust volume.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for adjusting the gas volume of a water ring vacuum pump to adapt to working conditions, specifically comprising the following steps:

[0006] Step 1: Water ring formation: Start the vacuum pump to rotate the impeller. The rotation of the impeller causes the water in the internal cavity of the vacuum pump to form a water ring.

[0007] Step 2: Intake and exhaust: A closed cavity is formed between the impeller hub and the liquid ring. The gas enters the closed cavity on the suction side at a certain flow rate through the suction port of the distribution plate. As the impeller rotates, the gas sucked into the closed cavity is compressed and discharged through the exhaust port on the exhaust side. When encountering different working conditions, the suction and exhaust volumes are adjusted through the gas volume regulating mechanism.

[0008] The present invention also discloses a water ring vacuum pump capable of adjusting gas volume, comprising a pump body, wherein the left side of the pump body is fixedly connected to an end cover by bolts, a gas volume adjusting mechanism is arranged inside the pump body, the gas volume adjusting mechanism comprises a first disc, the first disc is fixedly connected to the inside of the pump body by fixing bolts, the right side of the first disc is connected to a second disc by a connecting assembly, the right side of the second disc is fixedly connected to a ring gear, the right side of the top of the end cover is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a rotating shaft, the rotating shaft passes through the end cover and extends to the inside of the pump body, one end of the rotating shaft located inside the pump body is rotatably connected to the left side of the inner wall of the pump body, the surface of the rotating shaft located inside the pump body is fixedly connected to a gear, and the gear meshes with the ring gear for transmission.

[0009] Preferably, the connecting component is slidably connected to the annular groove opened on the right side of the first disc, and the connecting component includes a limit ring, which is fixedly connected to the left side of the second disc, and a plurality of limit sliding grooves are opened at equal distances inside the limit ring, and two upper and lower steel balls are slidably connected inside the limit sliding grooves, and a limit spring is arranged between the opposite sides of the two steel balls.

[0010] Preferably, the second disc is provided with a fan-shaped air inlet and a fan-shaped exhaust port, the air inlet is located in front of the exhaust port, the second disc is provided with a plurality of auxiliary exhaust ports, the auxiliary exhaust ports are located below the exhaust port, and the inlet and exhaust ports of the first disc and the second disc are arranged in the same manner.

[0011] Preferably, an exhaust channel and an air intake channel are connected on the left side of the end cover, the exhaust channel is located in front of the air intake channel, the exhaust channel and the air intake channel are Z-shaped, and an anti-backflow mechanism is provided inside the exhaust channel.

[0012] Preferably, the anti-backflow mechanism includes a turntable, which is rotatably connected to the inner wall of the exhaust passage, an airway is opened in the middle position of the bottom of the turntable, a plurality of baffle rods are fixedly connected to the bottom of the turntable, the baffle rods are surrounded by the outside of the baffle rods, and a plurality of air holes are opened inside the airway.

[0013] Preferably, a slide groove is provided inside the turntable, a return spring is fixedly connected to the right side of the inner wall of the slide groove, the other end of the return spring is fixedly connected to a U-shaped frame, and a sealing disk is fixedly connected between opposite sides of the U-shaped frame.

[0014] Preferably, the front and back sides of the U-shaped frame are fixedly connected with fixing rods, the surfaces of the fixing rods are rotatably connected with pulleys, and the pulleys are in contact with the top and bottom of the inner wall of the slide groove.

[0015] Preferably, a junction box is fixedly connected to the top of the pump body, an impeller assembly is arranged inside the pump body, the impeller of the impeller assembly is located on the right side of the second disc, a supporting foot is fixedly connected to the top of the pump body, and the left observation port of the end cover is fixedly connected to the observation end cover by a fixing bolt.

[0016] Beneficial Effects

[0017] The present invention provides a method for regulating the gas volume of a water ring vacuum pump to adapt to working conditions. Compared with the prior art, it has the following beneficial effects:

[0018] 1. The gas volume adjustment method of the water ring vacuum pump adapted to working conditions is as follows: the first disc is fixedly connected to the inside of the pump body through fixing bolts, the right side of the first disc is connected to the second disc through a connecting assembly, the right side of the second disc is fixedly connected to a ring gear, and when the intake and exhaust volume needs to be adjusted, the driving motor is started, the driving motor rotates and the second disc rotates through the cooperation of the gear and the ring gear, and the intake and exhaust ports on the first disc are blocked by the intake and exhaust ports opened on the second disc, thereby changing the intake and exhaust volume to adapt to different working conditions.

[0019] 2. The gas volume adjustment method of the water ring vacuum pump adapts to the working conditions. The connecting component is slidably connected to the annular groove opened on the right side of the first disc. The connecting component includes a limit ring, which is fixedly connected to the left side of the second disc. The first disc is connected to the pump body by bolts and is connected to the second disc by the connecting component, so that the first disc can be disassembled, repaired or replaced conveniently.

[0020] 3. The gas volume adjustment method of the water ring vacuum pump adapts to the working conditions. The anti-backflow mechanism includes a turntable, which is rotatably connected to the inner wall of the exhaust channel. An airway is opened in the middle of the bottom of the turntable. A plurality of baffles are fixedly connected to the bottom of the turntable. When the airflow in the exhaust channel suddenly decreases, the rotation speed of the turntable decreases, and the centrifugal force on the sealing disk is reduced, thereby resetting and blocking the airway to prevent the gas above the exhaust channel from flowing back. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the appearance of the present invention;

[0022] Figure 2 is a side view of the present invention;

[0023] Figure 3 It is a right side cross-sectional view of the present invention;

[0024] Figure 4 is a cross-sectional view of the present invention;

[0025] Figure 5 is a side view of the second disc of the present invention;

[0026] Figure 6 It is an enlarged view of A of the present invention;

[0027] Figure 7 is a cross-sectional view of the backflow prevention mechanism of the present invention;

[0028] Figure 8 It is a cross-sectional view of the turntable of the present invention.

[0029] In the figure: 1 pump body, 2 junction box, 3 end cover, 4 air volume regulating mechanism, 41 first disc, 42 second disc, 421 air inlet, 422 exhaust port, 423 auxiliary exhaust port, 43 connecting assembly, 431 limiting ring, 432 limiting slide, 433 steel ball, 434 limiting spring, 44 ring gear, 45 driving motor, 46 rotating shaft, 47 gear, 5 exhaust channel, 6 air inlet channel, 7 anti-backflow mechanism, 71 turntable, 72 stopper, 73 airway, 74 air hole, 75 slide, 76 reset spring, 77 U-shaped frame, 78 sealing disc, 79 fixing rod, 710 pulley, 8 impeller assembly, 9 supporting foot, 10 observation end cover. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0031] See also Figure 1-8 The present invention provides a technical solution: a water ring vacuum pump capable of adjusting gas volume, comprising a pump body 1, an end cover 3 is fixedly connected to the left side of the pump body 1 by bolts, a gas volume adjusting mechanism 4 is arranged inside the pump body 1, the gas volume adjusting mechanism 4 comprises a first disc 41, the first disc 41 is fixedly connected to the inside of the pump body 1 by fixing bolts, a second disc 42 is connected to the right side of the first disc 41 by a connecting assembly 43, a ring gear 44 is fixedly connected to the right side of the second disc 42, a driving motor 45 is fixedly connected to the right side of the top of the end cover 3, a rotating shaft 46 is fixedly connected to the output end of the driving motor 45, the rotating shaft 46 passes through the end cover 3 and extends to the inside of the pump body 1, one end of the rotating shaft 46 located inside the pump body 1 is rotatably connected to the left side of the inner wall of the pump body 1, a gear 47 is fixedly connected to the surface of the rotating shaft 46 located inside the pump body 1, and the gear 47 is meshed with the ring gear 44 for transmission.

[0032] The connecting component 43 is slidably connected to the annular groove opened on the right side of the first disk 41. The connecting component 43 includes a limit ring 431, which is fixedly connected to the left side of the second disk 42. A plurality of limit grooves 432 are equidistantly opened inside the limit ring 431. Two upper and lower steel balls 433 are slidably connected inside the limit grooves 432. A limit spring 434 is arranged between the opposite sides of the two steel balls 433.

[0033] The second disc 42 is provided with a fan-shaped air inlet 421 and a fan-shaped exhaust port 422. The air inlet 421 is located in front of the exhaust port 422. The second disc 42 is provided with a plurality of auxiliary exhaust ports 423. The auxiliary exhaust ports 423 are located below the exhaust port 422. The air inlet and exhaust ports of the first disc 41 and the second disc 42 are arranged in the same manner.

[0034] The left side of the end cover 3 is connected with an exhaust channel 5 and an air intake channel 6 . The exhaust channel 5 is located in front of the air intake channel 6 . The exhaust channel 5 and the air intake channel 6 are Z-shaped. An anti-backflow mechanism 7 is arranged inside the exhaust channel 5 .

[0035] The backflow prevention mechanism 7 includes a turntable 71, which is rotatably connected to the inner wall of the exhaust channel 5. An air duct 73 is opened in the middle position of the bottom of the turntable 71. A plurality of baffle rods 72 are fixedly connected to the bottom of the turntable 71. The baffle rods 72 surround the outside of the baffle rods 72, and a plurality of air holes 74 are opened inside the air duct 73.

[0036] A slide groove 75 is provided inside the turntable 71 , a return spring 76 is fixedly connected to the right side of the inner wall of the slide groove 75 , a U-shaped frame 77 is fixedly connected to the other end of the return spring 76 , and a sealing disk 78 is fixedly connected between opposite sides of the U-shaped frame 77 .

[0037] The front and back sides of the U-shaped frame 77 are fixedly connected with a fixing rod 79 , and the surface of the fixing rod 79 is rotatably connected with a pulley 710 , which contacts the top and bottom of the inner wall of the slide groove 75 .

[0038] A terminal box 2 is fixedly connected to the top of the pump body 1, an impeller assembly 8 is arranged inside the pump body 1, the impeller of the impeller assembly 8 is located on the right side of the second disc 42, a supporting foot 9 is fixedly connected to the top of the pump body 1, and the left observation port of the end cover 3 is fixedly connected to the observation end cover 10 by fixing bolts.

[0039] The present invention also discloses a method for adjusting the gas volume of a water ring vacuum pump to adapt to working conditions, which specifically comprises the following steps:

[0040] Step 1: Water ring formation: Start the vacuum pump to rotate the impeller. The rotation of the impeller causes the water in the internal cavity of the vacuum pump to form a water ring.

[0041] Step 2: Intake and exhaust: A closed cavity is formed between the impeller hub and the liquid ring. The gas enters the closed cavity on the intake side at a certain flow rate through the intake port of the distribution plate. As the impeller rotates, the gas sucked into the closed cavity is compressed and discharged through the exhaust port on the exhaust side.

[0042] Step 3: Air volume adjustment: start the drive motor 45, the drive motor 45 rotates to drive the rotating shaft 46 to rotate, the rotating shaft 46 rotates to drive the gear 47 to rotate, the gear 47 rotates and transmits the power to the ring gear 44, the ring gear 44 rotates and drives the second disc 42 to rotate, the second disc 42 rotates so that the air inlet 421, the exhaust port 422 and the auxiliary exhaust port 423 on the second disc 42 rotate accordingly, thereby changing the area covered by the air inlet 421, the exhaust port 422 and the auxiliary exhaust port 423 on the air inlet and exhaust port on the first disc 41, thereby changing the air intake and exhaust volume.

[0043] Step 4: Installation and replacement: When disassembling and replacing the first disc 41, first open the end cover 3 and remove the bolts fixing the first disc 41, then the first disc 41 can be removed from the second disc 42. When installing, just align the annular groove on the first disc 41 with the limiting ring 431 for installation. After installation, the limiting spring 434 acts to press the two steel balls 433 against the inner wall of the annular groove of the first disc 41, thereby fixing it, and does not hinder the rotation of the second disc 42.

[0044] Step 5: Anti-backflow: During normal exhaust, the gas blows onto the blocking rod 72, causing the turntable 71 to rotate. The turntable 71 rotates and generates centrifugal force, thereby opening the sealing disk 78. At this time, the reset spring 76 is compressed and the airway 73 can be exhausted normally. When a problem occurs inside the pump body 1 and the exhaust volume suddenly decreases, the centrifugal force on the sealing disk 78 decreases, and the reset spring 76 resets the sealing disk 78 to close the airway 73 to prevent backflow.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for adjusting the gas volume of a water ring vacuum pump to adapt to working conditions, specifically comprising the following steps: Step 1: Water ring formation: Start the vacuum pump to make the impeller rotate, and the rotation of the impeller makes the water in the internal cavity of the vacuum pump form water; Step 2: Intake and exhaust: A closed cavity is formed between the impeller hub and the liquid ring. The gas enters the closed cavity on the intake side at a certain flow rate through the intake port of the distribution plate. As the impeller rotates, the gas inhaled into the closed cavity is compressed and discharged through the exhaust port on the exhaust side. When encountering different working conditions, the intake and exhaust volumes are adjusted by the gas volume adjustment mechanism; The water ring vacuum pump for adjusting the gas volume in step 1 comprises a pump body (1), the left side of the pump body (1) is fixedly connected to an end cover (3) by bolts, and is characterized in that: a gas volume adjustment mechanism (4) is arranged inside the pump body (1), and the gas volume adjustment mechanism (4) comprises a first disc (41), the first disc (41) is fixedly connected to the inside of the pump body (1) by fixing bolts, the right side of the first disc (41) is connected to a second disc (42) by a connecting assembly (43), and the right side of the second disc (42) is fixedly connected to a ring gear (44), a driving motor (45) being fixedly connected to the right side of the top of the end cover (3), a rotating shaft (46) being fixedly connected to the output end of the driving motor (45), the rotating shaft (46) penetrating the end cover (3) and extending into the interior of the pump body (1), one end of the rotating shaft (46) located inside the pump body (1) being rotatably connected to the left side of the inner wall of the pump body (1), a gear (47) being fixedly connected to the surface of the rotating shaft (46) located inside the pump body (1), the gear (47) being meshed with the ring gear (44) for transmission; The connecting component (43) is slidably connected to the annular groove opened on the right side of the first disc (41), and the connecting component (43) comprises a limiting ring (431), and the limiting ring (431) is fixedly connected to the left side of the second disc (42), and a plurality of limiting sliding grooves (432) are opened at equal intervals inside the limiting ring (431), and two upper and lower steel balls (433) are slidably connected inside the limiting sliding grooves (432), and a limiting spring (434) is arranged between opposite sides of the two steel balls (433); The second disc (42) is provided with a fan-shaped air inlet (421) and a fan-shaped exhaust port (422), the air inlet (421) is located in front of the exhaust port (422), the second disc (42) is provided with a plurality of auxiliary exhaust ports (423), the auxiliary exhaust ports (423) are located below the exhaust port (422), and the first disc (41) and the second disc (42) have the same air inlet and exhaust port configuration; The left side of the end cover (3) is connected with an exhaust channel (5) and an intake channel (6); the exhaust channel (5) is located in front of the intake channel (6); the exhaust channel (5) and the intake channel (6) are in a Z shape; and a backflow prevention mechanism (7) is provided inside the exhaust channel (5); The backflow prevention mechanism (7) comprises a rotating disk (71), the rotating disk (71) being rotatably connected to the inner wall of the exhaust passage (5), an air passage (73) being provided at the middle of the bottom of the rotating disk (71), a plurality of baffle rods (72) being fixedly connected to the bottom of the rotating disk (71), the baffle rods (72) surrounding the outside of the baffle rods (72), and a plurality of air holes (74) being provided inside the air passage (73).

2. A method for adjusting the gas volume of a water ring vacuum pump to adapt to working conditions according to claim 1, characterized in that: A slide groove (75) is provided inside the rotating disk (71), a return spring (76) is fixedly connected to the right side of the inner wall of the slide groove (75), the other end of the return spring (76) is fixedly connected to a U-shaped frame (77), and a sealing disk (78) is fixedly connected between opposite sides of the U-shaped frame (77).

3. A method for adjusting the gas volume of a water ring vacuum pump to adapt to working conditions according to claim 2, characterized in that: The front and back sides of the U-shaped frame (77) are fixedly connected to a fixing rod (79), and the surface of the fixing rod (79) is rotatably connected to a pulley (710), and the pulley (710) is in contact with the top and bottom of the inner wall of the slide groove (75).

4. A method for adjusting the gas volume of a water ring vacuum pump to adapt to working conditions according to claim 1, characterized in that: The top of the pump body (1) is fixedly connected to a terminal box (2), an impeller assembly (8) is arranged inside the pump body (1), the impeller of the impeller assembly (8) is located on the right side of the second disc (42), the top of the pump body (1) is fixedly connected to a support foot (9), and the left observation port of the end cover (3) is fixedly connected to an observation end cover (10) via fixing bolts.

Images