Screw air compressor with sealing compensation function

Abstract

The invention discloses a screw air compressor with a sealing compensation function. The screw air compressor comprises a shell, a rotor is installed in the shell, rotating shafts are fixedly connected to the two ends of the rotor, a rotating shaft groove is formed in the shell, and the rotor is rotationally connected to the interior of the rotating shaft groove through the rotating shafts; the sealing element is arranged on the outer side of one rotating shaft, the sealing element is provided with two sealing rings, and the two sealing rings are arranged in the rotating shaft groove; and the driving mechanism is located outside the shell and used for alternately pushing the two sealing rings, so that the two sealing rings are alternately sealed. According to the sealing device, the driving mechanism is arranged, due to the fact that the sealing rings work alternately, when one sealing ring is attached to the rotating shaft for sealing, the other sealing ring is in a recovery state, continuous friction between the sealing rings and the rotating shaft is reduced through the design, the service life of the sealing rings is prolonged, and meanwhile the overall sealing performance is improved.

Description

Technical Field

[0001] The invention relates to the field of screw air compressors, in particular to a screw air compressor with a sealing compensation function. Background Art

[0002] During the use of the screw air compressor, the rotor rotates inside the casing through the shaft, and the contact part between the shaft and the casing is sealed by a sealing ring. However, the sealing ring is prone to severe wear during long-term contact and friction with the shaft, which makes the sealing effect of the sealing ring unbalanced, thereby affecting the overall sealing of the device. For this reason, we provide a screw air compressor with a sealing compensation function to solve the above problem. Summary of the invention

[0003] The purpose of the present invention is to provide a screw air compressor with a sealing compensation function in order to solve the problem that the sealing ring is prone to severe wear during long-term contact and friction with the rotating shaft, thereby causing an imbalance in the sealing effect of the sealing ring and further affecting the overall sealing of the device.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A screw air compressor with a sealing compensation function, comprising: a shell, a rotor is installed inside the shell, two ends of the rotor are fixedly connected with a rotating shaft, a rotating shaft groove is opened inside the shell, and the rotor is rotatably connected to the inside of the rotating shaft groove through the rotating shaft; a sealing member, the sealing member is arranged on the outside of one of the rotating shafts, the sealing member is provided with two sealing rings, and the two sealing rings are arranged inside the rotating shaft groove; a driving mechanism, located outside the shell, and used for alternately pushing the two sealing rings so that the two sealing rings perform alternate sealing.

[0005] As a further solution of the present invention: it also includes a purge assistant, which is located inside the housing and is used to clean the debris inside the sealing ring; As a further solution of the present invention: it also includes an auxiliary component, which is located inside the shell and is used to cooperate with the purge assistant to clean impurities in the gap between the sealing ring and the rotating shaft.

[0006] As a further solution of the present invention: the driving mechanism includes a fixed frame fixedly connected to the outer wall of the shell, a servo motor is fixedly connected to the side wall of the fixed frame, a spur gear is fixedly connected to the execution end of the servo motor, a leakage sensor is installed inside the rotating shaft groove, a first chamber and a second chamber are respectively opened inside the fixed frame, two fixed rods are slidably connected inside the fixed frame, and one of the fixed rods extends to the inside of the first chamber, and the other fixed rod extends to the inside of the second chamber, one end of the two fixed rods is fixedly connected to the first rack and the second rack, respectively, and the two sides of the spur gear are respectively meshed with the first rack and the second rack.

[0007] As a further solution of the present invention: the driving mechanism also includes electric telescopic rods respectively installed inside the two fixed rods, the execution ends of the two electric telescopic rods respectively penetrate into the outside of the fixed rods and are fixedly connected with piston plates, and the two piston plates are respectively installed inside the first chamber and the second chamber, the outer walls of the first rack and the second rack are respectively fixedly connected with two sliders, a sliding groove matching the slider is opened inside the fixed frame, the first rack and the second rack are respectively slidably connected to the inside of the sliding groove through the slider, and a connecting component for connecting the first chamber and the second chamber is provided inside the shell.

[0008] As a further scheme of the present invention: the connecting component includes a first connecting groove and a second connecting groove opened inside the shell, the first chamber and the second chamber are respectively provided with air guide grooves, the first connecting groove and the second connecting groove are respectively connected with the first chamber and the second chamber through the air guide grooves, the shaft groove is provided with an upper air groove and a lower air groove, the upper air groove and the lower air groove are respectively connected with the first connecting groove and the second connecting groove, the upper air groove and the lower air groove are separated by a partition, and the partition is fixedly connected to the inside of the shell, every two sealing rings are respectively installed in the upper air groove and the lower air groove, one of the sealing rings is initially in close contact with the shaft, and the other sealing ring is separated from the shaft.

[0009] As a further solution of the present invention: the purge assistant includes a connecting rod fixedly connected to the outer wall of one of the fixed rods, one end of the connecting rod passes through the outside of the fixed frame and extends to the interior of the shell and is fixedly connected to an auxiliary piston rod, an auxiliary chamber is provided inside the shell, the auxiliary piston rod is slidably connected to the interior of the auxiliary chamber through the connecting rod, an auxiliary groove is provided inside the shell, the auxiliary chamber is connected to the auxiliary groove, a third connecting groove is provided inside the partition, a fixed cover is fixedly connected to the interior of the shell above the rotating shaft, a one-way valve is fixedly connected to the top of the fixed cover, and a flow pipe is installed at the output end of the one-way valve.

[0010] As a further solution of the present invention: the auxiliary component includes a plurality of blocking grooves opened inside the auxiliary chamber, an inclined groove is opened inside the auxiliary chamber, and the plurality of blocking grooves are communicated with the inclined groove, the external thread of the shell is connected with a first collecting bucket and a second collecting bucket, and a connecting pipe is installed at the bottom of the inclined groove, one end of the connecting pipe passes through the outside of the second connecting groove and abuts against the feed port of the first collecting bucket, and one end of the circulation pipe passes through the interior of the shell and abuts against the feed port of the second collecting bucket.

[0011] As a further solution of the present invention: the upper parts of the first collecting bucket and the second collecting bucket are composed of filter sleeves, the outer walls of the lower parts are provided with threads, and the inner side of the shell is provided with thread grooves matching the first collecting bucket and the second collecting bucket.

[0012] As a further solution of the present invention: the auxiliary component also includes a reflux groove opened inside the shell, a first annular air outlet is opened inside the shaft groove, the reflux groove is connected to the first annular air outlet, a sealing film is installed inside the reflux groove, and the sealing film is composed of four rotatable elastic sealing rubbers, and the four elastic sealing rubbers are in contact with each other.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a driving mechanism, since the sealing rings work alternately, when one sealing ring is in contact with the rotating shaft for sealing, the other sealing ring is in a recovery state. Through the alternating sealing and dynamic compensation of the sealing rings, the sealing effect can be ensured not to be affected. This design reduces the continuous friction between the sealing ring and the rotating shaft, prolongs the service life of the sealing ring, and improves the overall sealing performance; 2. By setting up a purge assistant and an auxiliary component, when the second rack performs negative pressure or boosting work inside the second chamber, the heat and impurities between the rotating shaft and the sealing ring can be sucked or blown into the first collecting bucket and the second collecting bucket for collection, thereby ensuring that there will be no foreign matter on the rotating shaft and the sealing ring after resealing, thereby reducing the degree of wear between the rotating shaft and the sealing ring, and further improving the overall sealing effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a cross-sectional view of a housing of the present invention; Figure 3 It is a schematic diagram of the local structure of the housing of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle; Figure 6 It is a schematic diagram of the inner structure of the rotating shaft groove of the present invention; Figure 7 is a cross-sectional view of a fixing rod of the present invention; Figure 8 It is a schematic diagram of the sealing ring fitting of the present invention; Fig. 9 It is a schematic diagram of the local structure of the housing of the present invention; Fig.10 It is a schematic diagram of the sealing film structure of the present invention.

[0015] In the figure: 1, housing; 2, fixed frame; 3, rotor; 4, rotating shaft; 5, first chamber; 6, second chamber; 7, first connecting groove; 8, upper air groove; 9, sealing ring; 10, second connecting groove; 11, lower air groove; 12, partition; 13, first rack; 14, rotating shaft groove; 15, auxiliary groove; 16, reflux groove; 17, first annular air outlet; 18, flow pipe; 19, air leakage sensor; 20, fixed cover; 21, one-way valve; 22, third connecting groove; 23, second annular air outlet; 24, auxiliary chamber; 25, auxiliary piston rod; 26, blocking groove; 27, inclined groove; 28, fixing rod; 29, connecting pipe; 30, first collecting bucket; 31, second collecting bucket; 32, sealing membrane; 33, servo motor; 34, spur gear; 35, second rack; 36, slider; 37, slide groove; 38, electric telescopic rod; 39, piston plate; 40, connecting rod. DETAILED DESCRIPTION

[0016] 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.

[0017] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0018] Example 1 See also Figures 1 to 10The present embodiment provides a screw air compressor with a sealing compensation function, comprising: a housing 1, wherein two rotors 3 are installed inside the housing 1, and both ends of the rotors 3 are fixedly connected to a rotating shaft 4, and a plurality of rotating shaft grooves 14 are opened inside the housing 1, and the rotors 3 are rotatably connected inside the rotating shaft grooves 14 through the rotating shaft 4; a sealing member, wherein a group of sealing members are arranged outside each rotating shaft 4, and each group of sealing members is arranged with two sealing rings 9, and the two sealing rings 9 are arranged inside the rotating shaft grooves 14; a driving mechanism, located outside the housing 1, and used to push the sealing rings 9 so that the two sealing rings 9 perform alternate sealing, and the driving mechanism comprises a fixed frame 2 fixedly connected to the outer wall of the housing 1, and the fixed frame 2 The side wall of the servo motor 33 is fixedly connected, the execution end of the servo motor 33 is fixedly connected to the spur gear 34, the inside of the rotating shaft groove 14 is installed with the air leakage sensor 19, the inside of the fixed frame 2 is respectively provided with a first chamber 5 and a second chamber 6, the inside of the fixed frame 2 is slidably connected with two fixed rods 28, and one fixed rod 28 extends to the inside of the first chamber 5, and the other fixed rod 28 extends to the inside of the second chamber 6, one end of the two fixed rods 28 is respectively fixedly connected to the first rack 13 and the second rack 35, the two sides of the spur gear 34 are respectively meshed with the first rack 13 and the second rack 35, and the driving mechanism also includes electric The two electric telescopic rods 38 are respectively connected to the outside of the fixed rod 28 and are fixedly connected to a piston plate 39. The two piston plates 39 are respectively installed in the first chamber 5 and the second chamber 6. The outer walls of the first rack 13 and the second rack 35 are respectively fixedly connected to sliders 36. The interior of the fixed frame 2 is provided with a slide groove 37 matching the slider 36. The first rack 13 and the second rack 35 are respectively slidably connected to the inside of the slide groove 37 through the slider 36. The interior of the housing 1 is provided with a connecting component for connecting the first chamber 5 and the second chamber 6. The connecting component includes a first connecting groove 7 and a second connecting groove 10 opened in the housing 1. The first chamber 5 and the second chamber 6 are respectively provided with air guide grooves, and the first connecting groove 7 and the second connecting groove 10 are respectively connected with the first chamber 5 and the second chamber 6 through the air guide grooves. The upper air groove 8 and the lower air groove 11 are respectively provided inside the rotating shaft groove 14, and the upper air groove 8 and the lower air groove 11 are respectively connected with the first connecting groove 7 and the second connecting groove 10. The upper air groove 8 and the lower air groove 11 are separated by a partition 12, and the partition 12 is fixedly connected to the inside of the shell 1. Every two sealing rings 9 are respectively installed in the upper air groove 8 and the lower air groove 11. The initial state of one of the sealing rings 9 is tightly fitted with the rotating shaft 4, and the other sealing ring 9 is loosened from the rotating shaft 4 and no longer tightly fitted with the rotating shaft 4.

[0019] When the screw air compressor is operating, the PLC controller starts the servo motor 33 intermittently, and the output end of the servo motor 33 drives the spur gear 34 to perform intermittent reciprocating rotation. When the spur gear 34 rotates forward, it drives the first rack 13 to drive a fixed rod 28 to move toward the inside of the first chamber 5, and at the same time drives the second rack 35 to move toward the outside of the second chamber 6. The first rack 13 pushes the piston plate 39 to push the internal gas of the first chamber 5 into the first connecting groove 7. The second rack 35 evacuates the inside of the second connecting groove 10 through the piston plate 39, thereby increasing the internal pressure of the upper gas groove 8 so that the sealing ring 9 installed inside can fit tightly against the outer wall of the rotating shaft 4. At the same time, the internal pressure of the lower gas groove 11 is reduced so that the internal sealing ring 9 is relaxed and no longer tightly against the rotating shaft 4. By reciprocating the output end of the servo motor 33, the two sealing rings 9 can be alternately sealed on the outer wall of the rotating shaft 4.

[0020] Since the sealing ring 9 works alternately, when one sealing ring 9 is in contact with the rotating shaft 4 for sealing, the other sealing ring 9 is in a recovery state and gradually moves away from the rotating shaft 4. This design reduces the continuous friction between the sealing ring 9 and the rotating shaft 4, prolongs the service life of the sealing ring 9, and improves the overall sealing performance. In addition, by intermittently starting the servo motor 33 through the PLC controller, the alternating sealing time of the sealing ring 9 can be accurately controlled, thereby further optimizing the sealing effect. The design has strong adaptability: the design can adapt to the sealing requirements under different working conditions. For example, in the early stage of the operation of the screw air compressor, the degree of wear of the rotating shaft 4 is small, and the degree of fit of the sealing ring 9 may be high at this time; and as the running time increases, the degree of wear of the rotating shaft 4 gradually increases. At this time, the alternating sealing and dynamic compensation of the sealing ring 9 can ensure that the sealing effect is not affected. Since the sealing ring 9 works alternately, when one sealing ring 9 fails due to wear or aging, the other sealing ring 9 can immediately take over its sealing task, thereby greatly reducing the risk of leakage. This design not only improves the operating efficiency of the screw air compressor, but also ensures the safety of the working environment.

[0021] When the servo motor 33 is running, the leakage sensor 19 sends an electrical signal to the PLC controller, and the PLC controller will not control the start-up of the electric telescopic rod 38 at this time; when the servo motor 33 is not running, the leakage sensor 19 runs for leakage detection to detect whether there is any leakage in the gap between the shaft groove 14 and the shaft 4. If there is any leakage, the PLC controller controls the start-up of the electric telescopic rod 38 inside the first chamber 5 or the second chamber 6 where the leakage occurs, thereby driving the piston plate 39 to move laterally to pressurize the outer wall of the sealing ring 9 at the position of the elastic imbalance portion, until the sealing ring 9 forms a seal again, thereby compensating for the seal and improving the overall sealing of the device.

[0022] An alarm light for alarm can be installed on the outer wall of the shell 1, and the electric telescopic rod 38 is intermittently started under the control of the PLC controller, and the output end of the electric telescopic rod 38 has three strokes. Until the output end of the electric telescopic rod 38 is extended to the maximum distance, when the leakage sensor 19 still detects that the device is leaking, the PLC controller alarm light will operate to remind the staff that the device is leaking.

[0023] Example 2 The purge assistant is located inside the shell 1 and is used to clean the debris inside the sealing ring 9. The auxiliary component is located inside the shell 1 and is used to cooperate with the purge assistant to clean the impurities in the gap between the sealing ring 9 and the rotating shaft 4. The purge assistant includes a connecting rod 40 fixedly connected to the outer wall of one of the fixed rods 28. One end of the connecting rod 40 penetrates the outside of the fixed frame 2 and extends to the inside of the shell 1 and is fixedly connected with an auxiliary piston rod 25. An auxiliary chamber 24 is provided inside the shell 1. The auxiliary piston rod 25 is slidably connected to the inside of the auxiliary chamber 24 through the connecting rod 40. An auxiliary groove 15 is provided inside the shell 1. The auxiliary chamber 24 is connected to the auxiliary groove 15. A third connecting groove 22 is provided inside the partition 12. A fixed cover 20 is fixedly connected to the inside of the shell 1 above the rotating shaft 4. A check valve 21 is fixedly connected to the top of the fixed cover 20. A flow pipe 18 is installed at the output end of the check valve 21. The auxiliary component includes a plurality of blocking grooves 26 provided inside the auxiliary chamber 24. An inclined groove 27 is provided inside the auxiliary chamber 24. The blocking groove 26 is connected to the inclined groove 27. The outer thread of the shell 1 is connected to the first collecting bucket 30 and the second collecting bucket 31. The bottom of the inclined groove 27 is installed with a connecting pipe 29. One end of the connecting pipe 29 passes through the outside of the second connecting groove 10 and abuts against the feed port of the first collecting bucket 30. One end of the flow pipe 18 passes through the inside of the shell 1 and abuts against the feed port of the second collecting bucket 31. The upper part of the first collecting bucket 30 and the second collecting bucket 31 is composed of a filter sleeve, and the outer wall of the lower part is provided with a thread, and A threaded groove matching the first collecting bucket 30 and the second collecting bucket 31 is provided on the inner side of the shell 1. The auxiliary component also includes a reflux groove 16 provided inside the shell 1. A first annular air outlet 17 is provided inside the rotating shaft groove 14. The first annular air outlet 17 is arranged on the lower side of the lower sealing ring 9. The reflux groove 16 is connected to the first annular air outlet 17. A sealing film 32 is installed inside the reflux groove 16, and the sealing film 32 is composed of four rotatable elastic sealing rubbers, and the four elastic sealing rubbers are fitted to each other.

[0024] A limiting groove matching the connecting rod 40 is provided on the inner side of the fixed frame 2. When the second rack 35 performs the pressurization work inside the second chamber 6, the second rack 35 drives the connecting rod 40 to push the auxiliary piston rod 25 to move, thereby driving the auxiliary piston rod 25 to slide inside the auxiliary chamber 24, and transporting the gas from the inside of the auxiliary groove 15 to the third connecting groove 22. At this time, the sealing ring 9 is loosened from the rotating shaft 4 and is no longer tightly attached to the rotating shaft 4. The gas is discharged from the inside of the third connecting groove 22 through the second annular air outlet 23, and the heat generated on the inner side of the sealing ring 9 that is gradually separated from the rotating shaft 4 and the debris generated by the wear of the rotating shaft 4 are blown away, and the heat is dissipated and cleaned between the rotating shaft 4 and the sealing ring 9. The gas enters the fixed cover 20 from the inside of the shaft groove 14, and then enters the inside of the circulation pipe 18 from the output port of the one-way valve 21, and enters the inside of the second collecting bucket 31, thereby reducing the excessive wear of the sealing ring 9 due to heat between the shaft 4 and the sealing ring 9 and shortening the service life. The pressurized gas blows away the heat generated between the shaft 4 and the sealing ring 9, effectively reducing the temperature in this area. This heat dissipation mechanism significantly reduces the aging and wear of the sealing ring 9 material caused by high temperature, and further extends the service life of the sealing ring 9. By integrating dynamic sealing and heat dissipation mechanisms, the screw air compressor system not only improves the sealing performance, but also enhances the overall efficiency and reliability of the equipment.

[0025] When the second rack 35 performs negative pressure work in the second chamber 6, the hot air and impurities between the rotating shaft 4 and the sealing ring 9 will be sucked into the auxiliary chamber 24, and then the sucked impurities will be blocked by the blocking groove 26, and enter the connecting pipe 29 through the inclined groove 27 and then enter the first collecting bucket 30 to collect the impurities. The impurities that are not blocked will be transported to the second collecting bucket 31 when the second rack 35 performs pressurization work in the second chamber 6. When the pressurized gas enters the second collecting bucket 31, the impurities remaining in the auxiliary chamber 24 will be transported to the second collecting bucket 31. When the impurities are inside, the filter screen provided at the upper end of the second collecting hopper 31 is used to filter the impurities, and then the sealing film 32 is pushed to rotate and open, and then the gas is transported from the reflux groove 16 to the first annular air outlet 17, enters between the rotors 3, and the extracted gas is sent back to the rotor 3. When the staff cleans the impurities inside the first collecting hopper 30 and the second collecting hopper 31 and screws them out, the outside air will not flow into the reflux groove 16 through the position where the second collecting hopper 31 is screwed out, and the outside air is blocked by the sealing film 32 to prevent the air from being in the reflux groove 16. Impurities enter the shell 1 through the reflux groove 16, causing unnecessary damage. When the second rack 35 works at a negative pressure inside the second chamber 6, the hot air and impurities between the rotating shaft 4 and the sealing ring 9 are drawn into the auxiliary chamber. The impurities drawn in are blocked by the blocking groove 26, and enter the connecting pipe through the inclined groove 27, and then enter the first collecting bucket 30 for collection. This mechanism effectively prevents the impurities from wearing the rotating shaft 4 and the sealing ring 9, and protects the normal operation of the equipment. When the pressurized gas enters the second collecting bucket 31, it pushes the sealing film 32 to rotate, so that the port of the reflux groove 16 opens, so that the gas can be transported to the first annular air outlet 17 through the reflux groove 16, enter between the rotors 3, and send the extracted gas back to the rotor 3. This mechanism realizes the effective recovery of gas and improves the gas compression efficiency of the air compressor. When the staff cleans the impurities inside the first collecting bucket 30 and the second collecting bucket 31, the sealing film 32 blocks the outside air to prevent it from entering the rotor 3. This design effectively prevents the external gas from causing unnecessary damage to the rotor 3 and ensures the stable operation of the equipment.

[0026] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screw air compressor with sealing compensation function, characterized in that: include: A housing (1), wherein a rotor (3) is installed inside the housing (1), and two ends of the rotor (3) are fixedly connected to a rotating shaft (4), and a rotating shaft groove (14) is provided inside the housing (1), and the rotor (3) is rotatably connected inside the rotating shaft groove (14) via the rotating shaft (4); A sealing member, the sealing member being arranged on the outside of one of the rotating shafts (4), the sealing member being provided with two sealing rings (9), and the two sealing rings (9) being arranged inside the rotating shaft groove (14); The driving mechanism is located outside the housing (1) and is used to alternately push the two sealing rings (9) so that the two sealing rings (9) perform alternate sealing.

2. A screw air compressor with sealing compensation function according to claim 1, characterized in that: Also includes: A purge assistant is located inside the housing (1) and is used to clean debris inside the sealing ring (9).

3. A screw air compressor with sealing compensation function according to claim 2, characterized in that: Also includes: An auxiliary component is located inside the housing (1) and is used to cooperate with the purge auxiliary device to clean impurities in the gap between the sealing ring (9) and the rotating shaft (4).

4. A screw air compressor with sealing compensation function according to claim 3, characterized in that: The driving mechanism comprises a fixed frame (2) fixedly connected to the outer wall of the housing (1); a servo motor (33) is fixedly connected to the side wall of the fixed frame (2); an execution end of the servo motor (33) is fixedly connected to a spur gear (34); a gas leakage sensor (19) is installed inside the rotating shaft groove (14); a first chamber (5) and a second chamber (6) are respectively provided inside the fixed frame (2); two fixed rods (28) are slidably connected inside the fixed frame (2); one of the fixed rods (28) extends into the first chamber (5) and the other of the fixed rods (28) extends into the second chamber (6); one end of the two fixed rods (28) is fixedly connected to a first rack (13) and a second rack (35) respectively; and two sides of the spur gear (34) are respectively meshed with the first rack (13) and the second rack (35).

5. The screw air compressor with sealing compensation function according to claim 4, characterized in that: The driving mechanism further comprises electric telescopic rods (38) respectively mounted inside the two fixed rods (28); the execution ends of the two electric telescopic rods (38) respectively penetrate the outside of the fixed rods (28) and are fixedly connected to piston plates (39); the two piston plates (39) are respectively mounted inside the first chamber (5) and the second chamber (6); the outer walls of the first rack (13) and the second rack (35) are respectively fixedly connected to two sliders (36); a slide groove (37) matching the slider (36) is provided inside the fixed frame (2); the first rack (13) and the second rack (35) are respectively slidably connected inside the slide groove (37) through the slider (36); and a connecting component for connecting the first chamber (5) and the second chamber (6) is provided inside the housing (1).

6. The screw air compressor with sealing compensation function according to claim 5, characterized in that: The communication component comprises a first communication groove (7) and a second communication groove (10) provided inside the shell (1); air guide grooves are provided inside the first chamber (5) and the second chamber (6), respectively; the first communication groove (7) and the second communication groove (10) are connected to the first chamber (5) and the second chamber (6) respectively through the air guide grooves; an upper air groove (8) and a lower air groove (11) are provided inside the rotating shaft groove (14), the upper air groove (8) and the lower air groove (11) are connected to the first communication groove (7) and the second communication groove (10) respectively; the upper air groove (8) and the lower air groove (11) are separated by a partition (12), and the partition (12) is fixedly connected to the inside of the shell (1); each of the two sealing rings (9) are respectively installed inside the upper air groove (8) and the lower air groove (11); one of the sealing rings (9) is in close contact with the rotating shaft (4) in an initial state, and the other sealing ring (9) is separated from the rotating shaft (4).

7. The screw air compressor with sealing compensation function according to claim 6, characterized in that: The purge assistant comprises a connecting rod (40) fixedly connected to the outer wall of one of the fixing rods (28), one end of the connecting rod (40) passes through the outside of the fixing frame (2) and extends to the inside of the shell (1) and is fixedly connected to an auxiliary piston rod (25), an auxiliary chamber (24) is provided inside the shell (1), the auxiliary piston rod (25) is slidably connected to the inside of the auxiliary chamber (24) through the connecting rod (40), an auxiliary groove (15) is provided inside the shell (1), the auxiliary chamber (24) is connected to the auxiliary groove (15), a third connecting groove (22) is provided inside the partition (12), a fixing cover (20) is fixedly connected inside the shell (1) above the rotating shaft (4), a one-way valve (21) is fixedly connected to the top of the fixing cover (20), and a flow pipe (18) is installed at the output end of the one-way valve (21).

8. The screw air compressor with sealing compensation function according to claim 7, characterized in that: The auxiliary component comprises a plurality of blocking grooves (26) provided inside the auxiliary chamber (24); an inclined groove (27) is provided inside the auxiliary chamber (24); the plurality of blocking grooves (26) are in communication with the inclined groove (27); the outer surface of the shell (1) is threadedly connected to a first collecting bucket (30) and a second collecting bucket (31); a connecting pipe (29) is installed at the bottom of the inclined groove (27); one end of the connecting pipe (29) passes through the outside of the second communicating groove (10) and abuts against the feed port of the first collecting bucket (30); one end of the circulation pipe (18) passes through the inside of the shell (1) and abuts against the feed port of the second collecting bucket (31).

9. The screw air compressor with sealing compensation function according to claim 8, characterized in that: The upper parts of the first collecting hopper (30) and the second collecting hopper (31) are composed of filter sleeves, the outer walls of the lower parts are provided with threads, and the inner side of the shell (1) is provided with thread grooves matching the first collecting hopper (30) and the second collecting hopper (31).

10. The screw air compressor with sealing compensation function according to claim 9, characterized in that: The auxiliary component further comprises a reflux groove (16) provided inside the housing (1), a first annular air outlet (17) being provided inside the rotating shaft groove (14), the reflux groove (16) being in communication with the first annular air outlet (17), a sealing film (32) being installed inside the reflux groove (16), and the sealing film (32) being composed of four rotatable elastic sealing rubbers, and the four elastic sealing rubbers being in contact with each other.

Images