Vacuum compressor capable of avoiding gas leakage

Abstract

The invention discloses a vacuum compressor capable of avoiding gas leakage and relates to the technical field of vacuum compressors, the vacuum compressor comprises a machine base and a sealing assembly, a transmission box is arranged at one end of the top of the machine base, a motor is arranged on one side of the transmission box, an output shaft is connected to the other side of the transmission box, and an impeller is fixed to the end of the output shaft; the volute is arranged at the other end of the top of the machine base, the sealing assembly is arranged on one side of the volute, and the sealing assembly comprises a sealing shell, a sealing gasket, a sealing ring, a labyrinth channel, a rubber ring, a sealing cavity, a mounting sleeve, a graphite ring and a blocking piece. In the using process, the rubber ring is tightly arranged on the output shaft in a sleeving mode under elastic deformation so as to be matched with the labyrinth channel to form a more tortuous flow channel, so that the pressure reduction and flow closure effect is improved, the graphite ring is attached to the sealing shell, abrasion between the graphite ring and the sealing shell can be reduced through the abrasion resistance and self-lubricating performance of the graphite ring, and the service life of the sealing shell is prolonged. Therefore, in the rotating process, the sealing effect is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum compressors, and in particular to a vacuum compressor capable of preventing gas leakage. Background Art

[0002] The vacuum compressor uses a high-precision electronic time controller for time control and a high-power transformer for voltage regulation. It has the characteristics of rapid heating, etc. Usually, vacuum compressors are divided into two types: single-head compression sealing and double-head compression sealing. They are mainly used in situations where vacuuming and pressurized gas are required at the same time. They are particularly suitable for the extraction and pressurization of flammable and explosive gases, and for compressing and packaging down quilts, space quilts, pillows and other fluffy items. They can reduce packaging space, prevent moisture and dust, and reduce storage and transportation costs.

[0003] For example, the invention with publication number CN220622245U discloses a pressure-adjustable sealer and a vacuum compressor for a vacuum compressor. The invention detects the pressure in the volute flow channel through a pressure detection device, and feeds back the pressure in the volute flow channel to a compressed air input device, which is connected to the labyrinth air channel through a sealed air inlet hole, and injects compressed air into the volute flow channel to maintain a suitable pressure difference between the external gas pressure and the gas pressure in the volute flow channel to avoid leakage, etc. However, in actual use, since the sealed air inlet hole is located in the middle of the labyrinth air channel, the compressed air input will spread to both sides along the labyrinth air channel, one side is used to balance the air pressure inside the volute, and the other side will leak out, resulting in a problem of affecting the air pressure balance effect inside the volute.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a vacuum compressor that prevents gas leakage is proposed. Summary of the invention

[0005] The object of the present invention is to provide a vacuum compressor which can prevent gas leakage, so as to solve the problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a vacuum compressor for preventing gas leakage, comprising a machine base and a sealing assembly, a transmission box is arranged at one end of the top of the machine base, and a motor is arranged on one side of the transmission box, an output shaft is connected to the other side of the transmission box, and an impeller is fixed to the end of the output shaft, a volute is arranged at the other end of the top of the machine base, the sealing assembly is arranged on one side of the volute, the sealing assembly comprises a sealing shell, a sealing gasket, a sealing ring, a labyrinth passage, a rubber ring, a sealing cavity, a mounting sleeve, a graphite ring and a baffle, a sealing shell is arranged on one side of the volute, and a sealing gasket is connected between the sealing shells, a sealing ring is embedded at the outer end of one side of the sealing shell, and a labyrinth passage is opened on the inner side of the sealing shell, a rubber ring is sleeved on the outer side of the middle part of the output shaft, sealing cavities are opened at both ends of the middle part of the sealing shell, a mounting sleeve is arranged on the outer side of the middle part of the output shaft, a graphite ring is fixed to the outer side of the mounting sleeve, and baffles are connected to the ends of the graphite ring.

[0007] Furthermore, the baffles are equidistantly distributed around the outer side of the graphite ring, and the baffles are slidably connected to the sealing shell.

[0008] Furthermore, a disassembly and assembly component is provided in the middle portion of the mounting sleeve, and the disassembly and assembly component includes a synchronous ring, a shift block and a tension spring. The outer side of the mounting sleeve is rotatably connected to the synchronous ring, and the shift block is fixed to the outer side of the synchronous ring. The inner side of the synchronous ring is fixedly connected to the tension spring, and the tension spring is fixedly connected to the mounting sleeve.

[0009] Furthermore, the disassembly and assembly assembly also includes a rotating plate, a latch and a positioning hole, the inner side of the synchronous ring is rotatably connected to the rotating plate, and the end of the rotating plate is rotatably connected to the latch, and the latch is slidably connected to the mounting sleeve, and a positioning hole is opened on the outer side of the output shaft.

[0010] Furthermore, one side of the sealing shell is connected to a fluid replenishment assembly, and the fluid replenishment assembly includes a fluid replenishment box, a partition and a through hole. One side of the sealing shell is connected to the fluid replenishment box, and a partition is fixed to the lower end of the interior of the fluid replenishment box, and a through hole is opened in the middle of the partition.

[0011] Furthermore, the fluid replenishment component also includes a floating plug and an anti-deviation column. The bottom of the through hole is provided with a floating plug, and the top of the floating plug is fixed with an anti-deviation column.

[0012] Furthermore, the fluid replenishment assembly also includes a balancing tube and a waterproof breathable membrane. The upper end of the fluid replenishment tank is provided with a balancing tube, and the balancing tube is connected to the sealing cavity, and a waterproof breathable membrane is provided inside the balancing tube.

[0013] Furthermore, a detection component is connected to the outer side of one end of the output shaft, and the detection component includes a cam, a pulley seat, a piston rod and a piston cylinder. A cam is fixed to the outer side of one end of the output shaft, and a pulley seat is slidably connected to one side of the cam. A piston rod is fixed to one end of the pulley seat, and a piston cylinder is slidably connected to the outer side of one end of the piston rod, and the piston cylinder is fixedly connected to the transmission box.

[0014] Furthermore, the detection assembly also includes a return spring, a damper, a connecting tube and a detection chamber. A return spring is connected to one side of the piston cylinder, and a damper is arranged on the upper end of one side of the piston cylinder, and the damper is fixedly connected to the piston rod. A connecting tube is connected to the bottom of the piston cylinder, and a detection chamber is opened in the middle of the sealing shell.

[0015] Furthermore, the detection component also includes a pressure sensor, a controller and a buzzer. The pressure sensor is fixed to the middle part of the outer side of the sealed shell, the controller is placed at one end of the middle part of the outer side of the sealed shell, and the buzzer is fixed to the other end of the middle part of the outer side of the sealed shell.

[0016] The present invention provides a vacuum compressor for preventing gas leakage, which has the following beneficial effects:

[0017] 1. In the process of using the present invention, since the rubber ring is tightly sleeved on the output shaft under elastic deformation, a more tortuous flow channel is formed in cooperation with the labyrinth channel, thereby improving the effect of reducing pressure and intercepting flow, and the graphite ring fits with the sealing shell, and the wear resistance and self-lubricating properties of the graphite ring can be used to reduce the wear between it and the sealing shell, thereby further improving the sealing effect during the rotation process, and at the same time, part of the water can be injected into the sealing cavity in advance, and when the vacuum compressor is working, the output shaft will drive the baffle on the graphite ring to rotate through the mounting sleeve, and the baffle will drive the water at the lower part of the sealing shell to move, thereby utilizing a larger centrifugal force to form a water ring at the end of the sealing cavity, and the water ring can be used to seal between the end of the graphite ring and the sealing shell to prevent the high-pressure air inside the volute from leaking out. Therefore, during use, the sealing performance between the volute and the output shaft is improved by a multiple sealing structure, so that the vacuum compressor works more stably.

[0018] 2. When the present invention is used for water injection, it is only necessary to open the end cover of the liquid replenishment tank and inject water into the interior. When the water in the sealed cavity is less, the float will separate from the partition under the action of gravity. At this time, the water on the upper part of the partition will enter the lower part of the liquid replenishment tank through the through hole and flow into the sealed cavity from the lower pipe. When the liquid level is about to reach the lower part of the output shaft, the water will drive the float to move upward to block the through hole and automatically intercept the flow, thereby preventing the water level from leaking out of the gap due to hydraulic pressure due to excessively high water level. After the end cover of the liquid replenishment tank is closed, in the subsequent use process, when the water inside is When evaporation or partial leakage occurs, the liquid level will decrease. At this time, the float will automatically open to perform the refilling operation. During the refilling process, the balance pipe is used to balance the air pressure in the refilling tank and the sealed chamber to prevent the air pressure from affecting the refilling operation. When the output shaft rotates to form a water ring inside the sealed chamber, part of the liquid will enter the bottom of the partition under the action of centrifugal force. At this time, the float will also be tightly sealed against the partition, and the waterproof and breathable membrane can block the water to prevent water from passing through the waterproof and breathable membrane into the refilling tank and affecting the formation of the water ring.

[0019] 3. When the vacuum compressor of the present invention is started, the output shaft drives the cam to squeeze the pulley seat, so that the piston rod slides inside the piston cylinder, and the air inside the piston cylinder can be sent into the detection chamber through the connecting pipe, so that high pressure is formed inside the detection chamber, and under the action of the viscous damping force of the damper, the return speed of the piston rod can be reduced. Therefore, when the output shaft rotates at a high speed, the pulley seat cannot move to the recessed part of the cam, so that the inside of the detection chamber maintains a high pressure state. At this time, the pressure sensor can be used to monitor the air pressure inside the detection chamber, and during use, when the air pressure inside the detection chamber changes too much, it means that the sealing is reduced, and the buzzer can be started by the controller in time to remind the staff to perform maintenance. Therefore, during use, while forming a water ring seal, the inside of the detection chamber can also be pressurized for detection. When the water ring seal stops, when the pulley seat slides into the groove of the cam, the reset spring drives the piston cylinder to reset, so that the air pressure inside the detection chamber is restored, and the detection is stopped when the water ring disappears.

[0020] 4. When the sealing assembly of the present invention is maintained, after opening the sealing shell, it is only necessary to turn the shift block to rotate the synchronizer ring on the outside of the mounting sleeve. At this time, the synchronizer ring will drive all the rotating plates to pull the latches, so that they move outward under the limit of the mounting sleeve, and all the latches can be separated from the positioning holes at the same time, so that the mounting sleeve can be removed from the output shaft. When replacing and installing, it is only necessary to put the mounting sleeve on the output shaft, and when the latches are aligned with the positioning holes, the tension spring will pull the rotating plate to make the synchronizer ring rotate and reset, so that all the latches can be inserted into the positioning holes at the same time, which is beneficial to improving the convenience during installation. At the same time, the rubber sealing part on the inner side of the mounting sleeve will also be in close contact with the output shaft to maintain the sealing performance during connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional front view structure of a vacuum compressor for preventing gas leakage of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall three-dimensional rear view structure of a vacuum compressor for preventing gas leakage according to the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of a sealed shell of a vacuum compressor for preventing gas leakage according to the present invention;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of a disassembly and assembly component of a vacuum compressor for preventing gas leakage according to the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of a liquid replenishing component of a vacuum compressor for preventing gas leakage according to the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of a cam of a vacuum compressor for preventing gas leakage according to the present invention;

[0027] Figure 7 The present invention is a schematic diagram of a partial three-dimensional structure of a detection component of a vacuum compressor for preventing gas leakage.

[0028] In the figure: 1, base; 2, transmission box; 3, motor; 4, output shaft; 5, impeller; 6, volute; 7, sealing assembly; 701, sealing shell; 702, sealing gasket; 703, sealing ring; 704, labyrinth passage; 705, rubber ring; 706, sealing chamber; 707, mounting sleeve; 708, graphite ring; 709, baffle; 8, disassembly assembly; 801, synchronizing ring; 802, shifting block; 803, tension spring; 804, rotating plate; 805, latch; 806, positioning hole; 9 , liquid replenishing assembly; 901, liquid replenishing tank; 902, partition; 903, through hole; 904, float plug; 905, anti-bias column; 906, balance tube; 907, waterproof breathable membrane; 10, detection assembly; 1001, cam; 1002, pulley seat; 1003, piston rod; 1004, piston cylinder; 1005, reset spring; 1006, damper; 1007, connecting pipe; 1008, detection chamber; 1009, pressure sensor; 1010, controller; 1011, buzzer. DETAILED DESCRIPTION

[0029] See also Figures 1 to 7The present invention provides a technical solution: a vacuum compressor for preventing gas leakage, comprising a machine base 1 and a sealing assembly 7, a transmission box 2 is arranged at one end of the top of the machine base 1, and a motor 3 is arranged on one side of the transmission box 2, an output shaft 4 is connected to the other side of the transmission box 2, and an impeller 5 is fixed to the end of the output shaft 4, a volute 6 is arranged at the other end of the top of the machine base 1, and the sealing assembly 7 is arranged on one side of the volute 6, and the sealing assembly 7 includes a sealing shell 701, a sealing gasket 702, a sealing ring 703, a labyrinth channel 704, a rubber ring 705, a sealing cavity 706, a mounting sleeve 707, Graphite ring 708 and baffle 709, a sealing shell 701 is arranged on one side of the volute 6, and a sealing gasket 702 is connected between the sealing shells 701, a sealing ring 703 is embedded on the outer end of one side of the sealing shell 701, and a labyrinth channel 704 is opened on the inner side of the sealing shell 701, a rubber ring 705 is sleeved on the outer side of the middle part of the output shaft 4, and sealing cavities 706 are opened at both ends of the middle part of the sealing shell 701, a mounting sleeve 707 is arranged on the outer side of the middle part of the output shaft 4, and a graphite ring 708 is fixed on the outer side of the mounting sleeve 707, and a baffle 709 is connected to the end of the graphite ring 708.

[0030] See also Figures 1 to 4 , the baffles 709 are equidistantly distributed on the outer side of the graphite ring 708, and the baffles 709 are slidably connected to the sealing shell 701. A disassembly assembly 8 is provided in the middle of the mounting sleeve 707, and the disassembly assembly 8 includes a synchronous ring 801, a shift block 802 and a tension spring 803. The outer side of the mounting sleeve 707 is rotatably connected with the synchronous ring 801, and the shift block 802 is fixed on the outer side of the synchronous ring 801. The inner side of the synchronous ring 801 is fixedly connected with the tension spring 803, and the tension spring 803 is fixedly connected to the mounting sleeve 707. The disassembly assembly 8 also includes a rotating plate 804, a latch 805 and a positioning hole 806. The inner side of the synchronous ring 801 is rotatably connected with the rotating plate 804, and the end of the rotating plate 804 is rotatably connected with the latch 805, and the latch 805 is slidably connected to the mounting sleeve 707. A positioning hole 806 is opened on the outer side of the output shaft 4;

[0031] The specific operation is as follows: the motor 3 drives the output shaft 4 to rotate through the transmission box 2, so that the impeller 5 works, and the external air will be sucked into the volute 6 to form high pressure. In this process, the sealing gasket 702 will seal the sealing shell 701, and the sealing ring 703 will seal the volute 6 and the sealing shell 701. Because the rubber ring 705 is tightly sleeved on the output shaft 4 under elastic deformation, it cooperates with the labyrinth channel 704 to form a more tortuous flow channel, thereby improving the effect of pressure reduction and interception. In addition, the graphite ring 708 fits with the sealing shell 701, and the wear resistance and self-lubricating properties of the graphite ring 708 can be used to reduce the wear between it and the sealing shell 701. At the same time, part of the water can be injected into the sealing chamber 706 in advance, and the output shaft 4 will drive the baffle 709 on the graphite ring 708 to rotate through the latch 805 and the mounting sleeve 707, and the baffle 709 will drive the water at the bottom of the sealing shell 701 to move, thereby using a larger centrifugal force to make the sealing chamber 706 The end of the graphite ring 708 forms a water ring, which can be used to seal between the end of the graphite ring 708 and the sealing shell 701 to prevent the high-pressure air inside the volute 6 from leaking out. When the sealing assembly 7 needs to be maintained, after opening the sealing shell 701, it is only necessary to toggle the block 802 to rotate the synchronizer ring 801 on the outside of the mounting sleeve 707. At this time, the synchronizer ring 801 will drive all the rotating plates 804 to pull the latch 805 to move outward under the limit of the mounting sleeve 707, so that all the latches 805 can be separated from the positioning holes 806 at the same time, so that the mounting sleeve 707 can be removed from the output shaft 4. When replacing and installing, it is only necessary to put the mounting sleeve 707 on the output shaft 4, and when the latch 805 is aligned with the positioning hole 806, the tension spring 803 will pull the rotating plate 804 to make the synchronizer ring 801 rotate and reset, so that all the latches 805 can be inserted into the positioning holes 806 at the same time, which is conducive to improving the convenience during installation.

[0032] See also Figures 5 to 7A liquid replenishment component 9 is connected to one side of the sealed shell 701. The liquid replenishment component 9 includes a liquid replenishment box 901, a partition 902 and a through hole 903. A liquid replenishment box 901 is connected to one side of the sealed shell 701, and a partition 902 is fixed to the lower end of the inner part of the liquid replenishment box 901, and a through hole 903 is opened in the middle of the partition 902. The liquid replenishment component 9 also includes a floating plug 904 and an anti-deflection column 905. The bottom of the through hole 903 is provided with a floating plug 904, and the top of the floating plug 904 is fixed with an anti-deflection column 905. The liquid replenishment component 9 also includes The balance tube 906 and the waterproof breathable membrane 907 are included. The upper end of the liquid replenishment tank 901 is provided with a balance tube 906, and the balance tube 906 is connected to the sealed cavity 706, and the inside of the balance tube 906 is provided with a waterproof breathable membrane 907. The outer side of one end of the output shaft 4 is connected to a detection component 10, and the detection component 10 includes a cam 1001, a pulley seat 1002, a piston rod 1003 and a piston cylinder 1004. The cam 1001 is fixed to the outer side of one end of the output shaft 4, and one side of the cam 1001 is slidably connected to the outer side of the output shaft 4. There is a pulley seat 1002, one end of the pulley seat 1002 is fixed with a piston rod 1003, and one end of the piston rod 1003 is slidably connected to a piston cylinder 1004, and the piston cylinder 1004 is fixedly connected to the transmission box 2, the detection component 10 also includes a reset spring 1005, a damper 1006, a connecting pipe 1007 and a detection chamber 1008, one side of the piston cylinder 1004 is connected to a reset spring 1005, and the upper end of one side of the piston cylinder 1004 is provided with a damper 1006, and the damper 1006 is fixedly connected to the piston rod 1003, a connecting pipe 1007 is connected to the bottom of the piston cylinder 1004, a detection chamber 1008 is opened in the middle of the sealed shell 701, and the detection assembly 10 also includes a pressure sensor 1009, a controller 1010 and a buzzer 1011. The pressure sensor 1009 is fixed in the middle of the outer side of the sealed shell 701, and the controller 1010 is placed at one end of the middle of the outer side of the sealed shell 701, and the buzzer 1011 is fixed at the other end of the middle of the outer side of the sealed shell 701;

[0033] The specific operation is as follows: open the end cover of the liquid replenishing tank 901 and fill water into the interior. When the water in the sealed cavity 706 is less, the float 904 will separate from the partition 902 under the action of gravity. At this time, the water on the upper part of the partition 902 will enter the lower part of the liquid replenishing tank 901 through the through hole 903, and flow into the sealed cavity 706 from the lower pipe. At this time, the balance pipe 906 is used to balance the air pressure inside the liquid replenishing tank 901 and the sealed cavity 706 to avoid the air pressure affecting the liquid replenishing operation. When the liquid level is about to reach the lower part of the output shaft 4, the water will drive the float 904 to move up, so that it blocks the through hole 903, avoiding the hydraulic pressure from being too high due to the water level. The end cover of the liquid replenishing tank 901 is then closed. In the subsequent working process, the output shaft 4 will drive the cam 1001 to squeeze the pulley seat 1002, so that the piston rod 1003 can slide inside the piston cylinder 1004, and the air inside the piston cylinder 1004 can be sent into the detection chamber 1008 through the connecting pipe 1007, so that the inside of the detection chamber 1008 forms a high pressure, and under the action of the viscous damping force of the damper 1006, the return speed of the piston rod 1003 can be reduced. Therefore, when the output shaft 4 rotates at a high speed, the pulley seat 1002 cannot move to the concave part of the cam 1001, so that the detection chamber 1 008 maintains a high pressure inside. At this time, the pressure sensor 1009 can be used to monitor the air pressure inside the detection chamber 1008, and when the output shaft 4 rotates to form a water ring inside the sealing chamber 706, part of the liquid will enter the bottom of the partition 902 under the action of centrifugal force. At this time, the float 904 will also be tightly sealed with the partition 902, and the waterproof and breathable membrane 907 can block the water to prevent water from passing through the waterproof and breathable membrane 907 and entering the liquid replenishment tank 901 to affect the formation of the water ring. Later, during use, when the air pressure inside the detection chamber 1008 changes too much, it means that the sealing is reduced, and the water can be vented in time. The controller 1010 activates the buzzer 1011 to remind the staff to perform maintenance. Therefore, during use, while forming a water ring seal, the inside of the detection chamber 1008 can also be pressurized for detection. When the water ring seal stops, when the pulley seat 1002 slides into the groove of the cam 1001, the reset spring 1005 will drive the piston cylinder 1004 to reset, so that the air pressure inside the detection chamber 1008 is restored, thereby stopping the detection when the water ring disappears. After long-term use, when the internal water evaporates or partially leaks and causes the liquid level to drop, the float 904 will automatically open due to gravity, and can also automatically perform the liquid replenishment operation.

[0034] In summary, when using this vacuum compressor that prevents gas leakage, first open the end cover of the liquid replenishing tank 901 and fill water into the interior, and when the water in the sealed chamber 706 is less, the float 904 will be separated from the partition 902 under the action of gravity, and the water on the upper part of the partition 902 will enter the lower part of the liquid replenishing tank 901 through the through hole 903, and flow into the sealed chamber 706 from the lower pipe, and the balance pipe 906 can also be used to automatically balance the air pressure inside the liquid replenishing tank 901 and the sealed chamber 706 to facilitate the flow of liquid, and when the liquid level is about to reach the lower part of the output shaft 4, the water will drive the float 904 to move up to block the through hole 903, and after closing the end cover of the liquid replenishing tank 901, in the subsequent use process, when the liquid level is lowered, it can also be carried out The fluid replenishment operation is then performed, and the motor 3 is started to make the transmission box 2 drive the output shaft 4 to rotate, thereby making the impeller 5 work, and the external air will be sucked into the volute 6 to form a high pressure. In this process, the sealing gasket 702 will seal the sealing shell 701, and the sealing ring 703 will seal the volute 6 and the sealing shell 701. Moreover, since the rubber ring 705 is tightly sleeved on the output shaft 4 under elastic deformation, a more tortuous flow channel is formed in cooperation with the labyrinth channel 704, and the graphite ring 708 fits with the sealing shell 701, and the wear resistance and self-lubricating properties of the graphite ring 708 can be used to reduce the wear between it and the sealing shell 701. Secondly, the output shaft 4 will drive the baffle 709 on the graphite ring 708 to rotate through the latch 805 and the mounting sleeve 707, and the baffle 709 will drive the water in the lower part of the sealing shell 701 to move, so as to form a water ring at the end of the sealing chamber 706 by using a large centrifugal force, and the water ring can be used to seal the end of the graphite ring 708 and the sealing shell 701. In this process, part of the liquid will enter the bottom of the partition 902 under the action of centrifugal force. At this time, the float plug 904 will also be tightly sealed with the partition 902, and the waterproof breathable membrane 907 can block the water to prevent the water from passing through the waterproof breathable membrane 907 and entering the liquid replenishing tank 901 to affect the formation of the water ring. Then, the output shaft 4 will also drive the cam 1001 to squeeze the pulley seat 1002, so that the piston rod 1003 slides inside the piston cylinder 1004, and the air inside the piston cylinder 1004 can be discharged through the connection The tube 1007 is sent into the detection chamber 1008, so that high pressure is formed inside the detection chamber 1008, and under the action of the viscous damping force of the damper 1006, the return speed of the piston rod 1003 can be reduced, and the pulley seat 1002 cannot move to the recessed part of the cam 1001, so that the inside of the detection chamber 1008 maintains a high pressure state. At this time, the pressure sensor 1009 can be used to monitor the air pressure inside the detection chamber 1008. During use, when the air pressure inside the detection chamber 1008 changes too much, the controller 1010 can promptly start the buzzer 1011 to remind the staff to perform maintenance. Finally, when the sealing assembly 7 needs to be inspected and maintained, after removing the sealing shell 701, it is only necessary to turn the dial block 802.The synchronizer ring 801 can be rotated outside the mounting sleeve 707. At this time, the synchronizer ring 801 will drive all the rotating plates 804 to pull the latches 805, so that all the latches 805 can be separated from the positioning holes 806 at the same time, so that the mounting sleeve 707 can be removed from the output shaft 4. When replacing and installing, it is only necessary to sleeve the mounting sleeve 707 on the output shaft 4, and when the latches 805 are aligned with the positioning holes 806, the tension spring 803 will pull the rotating plate 804 to make the synchronizer ring 801 rotate and reset, so that all the latches 805 can be inserted into the positioning holes 806 at the same time, which is conducive to improving the convenience during installation.

[0035] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A vacuum compressor for preventing gas leakage, characterized in that: The invention comprises a machine base (1) and a sealing assembly (7), wherein a transmission box (2) is arranged at one end of the top of the machine base (1), and a motor (3) is arranged on one side of the transmission box (2), an output shaft (4) is connected to the other side of the transmission box (2), and an impeller (5) is fixed to the end of the output shaft (4), a volute (6) is arranged at the other end of the top of the machine base (1), and the sealing assembly (7) is arranged on one side of the volute (6), and the sealing assembly (7) comprises a sealing shell (701), a sealing gasket (702), a sealing ring (703), a labyrinth channel (704), a rubber ring (705), a sealing chamber (706), a mounting sleeve (707), a graphite ring (708) and a baffle (709), a sealing shell (701) is arranged on one side of the volute (6), and a sealing gasket (702) is connected between the sealing shells (701), a sealing ring (703) is embedded at the outer end of one side of the sealing shell (701), and a labyrinth passage (704) is provided on the inner side of the sealing shell (701), a rubber ring (705) is sleeved on the outer side of the middle part of the output shaft (4), and sealing cavities (706) are provided at both ends of the middle part of the sealing shell (701), a mounting sleeve (707) is arranged on the outer side of the middle part of the output shaft (4), and a graphite ring (708) is fixed on the outer side of the mounting sleeve (707), and a baffle (709) is connected to the end of the graphite ring (708).

2. A vacuum compressor for preventing gas leakage according to claim 1, characterized in that: The baffles (709) are equidistantly distributed around the outer side of the graphite ring (708), and the baffles (709) are slidably connected to the sealing shell (701).

3. A vacuum compressor for preventing gas leakage according to claim 1, characterized in that: A disassembly assembly (8) is arranged in the middle of the installation sleeve (707), and the disassembly assembly (8) comprises a synchronous ring (801), a shift block (802) and a tension spring (803); the outer side of the installation sleeve (707) is rotatably connected to the synchronous ring (801), and the outer side of the synchronous ring (801) is fixedly connected to the shift block (802); the inner side of the synchronous ring (801) is fixedly connected to the tension spring (803), and the tension spring (803) is fixedly connected to the installation sleeve (707).

4. A vacuum compressor for preventing gas leakage according to claim 3, characterized in that: The disassembly assembly (8) further comprises a rotating plate (804), a latch (805) and a positioning hole (806); the inner side of the synchronizer ring (801) is rotatably connected to the rotating plate (804); the end of the rotating plate (804) is rotatably connected to the latch (805); the latch (805) is slidably connected to the mounting sleeve (707); and the outer side of the output shaft (4) is provided with a positioning hole (806).

5. A vacuum compressor for preventing gas leakage according to claim 1, characterized in that: One side of the sealing shell (701) is connected to a fluid replenishment assembly (9), and the fluid replenishment assembly (9) comprises a fluid replenishment box (901), a partition (902) and a through hole (903). One side of the sealing shell (701) is connected to a fluid replenishment box (901), and a partition (902) is fixed to the lower end of the interior of the fluid replenishment box (901), and a through hole (903) is opened in the middle of the partition (902).

6. A vacuum compressor for preventing gas leakage according to claim 5, characterized in that: The fluid replenishing assembly (9) further comprises a floating plug (904) and an anti-deflection column (905); the floating plug (904) is arranged at the bottom of the through hole (903), and the anti-deflection column (905) is fixed to the top of the floating plug (904).

7. A vacuum compressor for preventing gas leakage according to claim 6, characterized in that: The fluid replenishment assembly (9) further comprises a balancing tube (906) and a waterproof breathable membrane (907); the balancing tube (906) is arranged at the upper end of the fluid replenishment tank (901), the balancing tube (906) is connected to the sealed cavity (706), and the waterproof breathable membrane (907) is arranged inside the balancing tube (906).

8. A vacuum compressor for preventing gas leakage according to claim 1, characterized in that: A detection assembly (10) is connected to the outer side of one end of the output shaft (4), and the detection assembly (10) comprises a cam (1001), a pulley seat (1002), a piston rod (1003) and a piston cylinder (1004). The cam (1001) is fixed to the outer side of one end of the output shaft (4), and one side of the cam (1001) is slidably connected to the pulley seat (1002). The piston rod (1003) is fixed to one end of the pulley seat (1002), and the piston cylinder (1004) is slidably connected to the outer side of one end of the piston rod (1003), and the piston cylinder (1004) is fixedly connected to the transmission box (2).

9. A vacuum compressor for preventing gas leakage according to claim 8, characterized in that: The detection assembly (10) further comprises a reset spring (1005), a damper (1006), a connecting tube (1007) and a detection chamber (1008); a reset spring (1005) is connected to one side of the piston cylinder (1004); a damper (1006) is arranged at the upper end of one side of the piston cylinder (1004); the damper (1006) is fixedly connected to the piston rod (1003); a connecting tube (1007) is connected to the bottom of the piston cylinder (1004); and a detection chamber (1008) is provided in the middle of the sealing shell (701).

10. A vacuum compressor for preventing gas leakage according to claim 9, characterized in that: The detection component (10) further comprises a pressure sensor (1009), a controller (1010) and a buzzer (1011); the pressure sensor (1009) is fixed to the middle part of the outer side of the sealed shell (701); the controller (1010) is arranged at one end of the middle part of the outer side of the sealed shell (701); and the buzzer (1011) is fixed to the other end of the middle part of the outer side of the sealed shell (701).

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