A seal structure for a gas compressor

Abstract

The application discloses a sealing structure for a gas compressor, which comprises an air compressor body, a cavity is formed in the air compressor body, an air inlet pipe and an air outlet pipe are communicated with the cavity, a sealing ring is sleeved on the air outlet pipe and fixedly connected with the air outlet pipe, the top of the sealing ring is fixedly connected with the inner wall of the cavity, a piston is sleeved on the air outlet pipe and slidably connected with the air outlet pipe, the outer side of the piston is slidably connected with the inner wall of the cavity, a pressing plate is fixedly connected with the top of the piston, the pressing plate is sleeved on the air outlet pipe and slidably connected with the air outlet pipe, a rotating box is rotatably connected with the top end of the air outlet pipe, and a gas conveying pipe is communicated with the top of the rotating box. With the movement of the piston, the pressing plate drives the sealing ring to be pressed on the inner wall of the cavity, so that the situation that the sealing effect is deteriorated due to the peeling of the sealing ring is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to a sealing structure for a gas compressor. BACKGROUND

[0002] There are many kinds of air compressors, which can be divided into volumetric compressors, reciprocating compressors, centrifugal compressors according to working principle. The working principle of volumetric compressor is to compress the volume of gas, so that the density of gas molecules in unit volume increases to increase the pressure of compressed air.

[0003] The air compressor is usually used to drive the machine. The air compressor is connected with the machine through the gas conveying pipe. The machine uses compressed air as power to start the machine. At present, the connection position of the gas conveying pipe and the air compressor is usually sealed by a sealing ring. However, the sealing ring will be delaminated after long-term use, resulting in poor sealing effect of the sealing ring, and the air leakage is prone to occur at the connection position of the gas conveying pipe and the air compressor. In addition, when using the pneumatic nail gun, the gas conveying pipe is first connected with the nail gun, and then the nail gun can be used. During the process, the worker needs to move the nail gun all the time. The nail gun will often cause the rotation of the gas conveying pipe. The rotation of the gas conveying pipe will accelerate the wear between the gas conveying pipe and the air compressor, resulting in the possibility of air leakage at the contact position of the gas conveying pipe and the air compressor. In addition, the gas conveying pipe will be creased after long-term bending, and the gas conveying pipe will also leak air after a long time. SUMMARY

[0004] In view of the problems mentioned in the background, the purpose of the present application is to provide a sealing structure for a gas compressor.

[0005] In order to solve the above problems, the technical scheme adopted by the present application is as follows.

[0006] A sealing structure for a gas compressor, comprising an air compressor body, a cavity is formed in the air compressor body, an air inlet pipe and an air outlet pipe are communicated with the cavity, a sealing ring is sleeved on the air outlet pipe and fixedly connected with the air outlet pipe, the top of the sealing ring is fixedly connected with the inner wall of the cavity, a piston is sleeved on the air outlet pipe and slidably connected with the air outlet pipe, the outer side of the piston is slidably connected with the inner wall of the cavity, a pressing plate is fixedly connected with the top of the piston, the pressing plate is sleeved on the air outlet pipe and slidably connected with the air outlet pipe, a rotating box is rotatably connected with the top end of the air outlet pipe, a gas conveying pipe is communicated with the top of the rotating box, and a protection structure is arranged on the gas conveying pipe.

[0007] Further description of the above technical scheme:

[0008] The protection structure comprises a mounting plate, which is sleeved on the gas conveying pipe and fixedly connected therewith, a support cylinder is fixedly connected to the top of the mounting plate, and the support cylinder is sleeved on the gas conveying pipe.

[0009] As a further description of the above technical solution:

[0010] The support cylinder is in the shape of a horn, a protection ring is fixedly connected to the top of the support cylinder, and the cross section of the protection ring is in the shape of a semicircle.

[0011] As a further description of the above technical solution:

[0012] The top of the pressing plate is provided with a sliding groove in the shape of a ring, the inner wall of the sliding groove is slidably connected with a pressing plate, one side of the pressing plate is fixedly connected with a spring, the other end of the spring is fixedly connected with the inner wall of the sliding groove, the inner top wall of the cavity is provided with a trapezoidal groove in the shape of a ring, and the top of the pressing plate is in contact with the inner wall of the trapezoidal groove.

[0013] As a further description of the above technical solution:

[0014] The top of the pressing plate is rotatably connected with a guide wheel, and the top of the guide wheel is rollingly connected with the inner wall of the trapezoidal groove.

[0015] As a further description of the above technical solution:

[0016] The top end of the gas outlet pipe is fixedly connected with a sealing plate, and the outer side of the sealing plate is slidably connected with the inner wall of the rotating box.

[0017] As a further description of the above technical solution:

[0018] The top and the bottom of the sealing plate are fixedly connected with auxiliary rings, and the opposite sides of the two auxiliary rings are embedded on the rotating box and rotatably connected with the rotating box.

[0019] As a further description of the above technical solution:

[0020] The opposite sides of the two auxiliary rings are fixedly connected with reinforcing rings, the inner top wall and the inner bottom wall of the rotating box are provided with sealing grooves, the outer sides of the two reinforcing rings are rotatably connected with the inner walls of the two sealing grooves, and the cross sections of the two reinforcing rings are in the shape of a trapezoid.

[0021] Compared with the prior art, the present application has the following advantages:

[0022] With the movement of the piston, the compression plate drives the sealing ring to be pressed against the inner wall of the cavity, thereby effectively avoiding the situation that the sealing ring is delaminated to cause poor sealing effect; when the pneumatic machine is used for continuously moving, the air conveying pipe is rotated on the air outlet pipe through the rotating box after the pneumatic machine moves, thereby effectively reducing the tension generated by the rotation of the air conveying pipe to accelerate the wear between the air conveying pipe and the air compressor body, the wear between the air conveying pipe and the air compressor body is slowed down, thereby improving the service life of the air conveying pipe and indirectly improving the sealing effect of the air conveying pipe; when the air conveying pipe is excessively bent, the air conveying pipe pulls the mounting plate to be offset, the mounting plate is in contact with the rotating box after being offset, the rotating box plays a role in supporting the mounting plate, thereby achieving the support and reinforcement of the air conveying pipe, if the air conveying pipe is bent for a long time, the air conveying pipe is in contact with the inner wall of the supporting cylinder, the supporting cylinder can play a role in supporting the air conveying pipe, thereby effectively reducing the occurrence of creases of the air conveying pipe, further improving the service life of the air conveying pipe, reducing the air leakage of the air conveying pipe, and improving the sealing effect of the device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is a structural schematic diagram of the present application;

[0024] Fig. 2 It is a subjective diagram of the present application;

[0025] Fig. 3 It is a front view of the present application;

[0026] Fig. 4 It is a position relationship diagram between the pressing plate and the compression plate of the present application;

[0027] Fig. 5 It is a connection relationship diagram between the pressing plate and the sliding groove in the present application;

[0028] Fig. 6 It is a position relationship diagram between the sealing plate, the auxiliary ring and the reinforcing ring in the present application.

[0029] Explanation of reference numerals in the drawing:

[0030] 1, air compressor body; 2, cavity; 3, air inlet pipe; 4, air outlet pipe; 5, sealing ring; 6, piston; 7, compression plate; 8, rotating box; 9, air conveying pipe; 10, protection structure; 101, mounting plate; 102, supporting cylinder; 11, protection ring; 12, sliding groove; 13, pressing plate; 14, spring; 15, trapezoidal groove; 16, guide wheel; 17, sealing plate; 18, auxiliary ring; 19, reinforcing ring; 20, sealing groove. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application.

[0032] Embodiment 1

[0033] Please refer to Figs. 1-6 In the application: a sealing structure for air compressor, including air compressor body 1, air compressor body 1 is provided with cavity 2, cavity 2 is communicated with air inlet pipe 3 and air outlet pipe 4, air outlet pipe 4 is provided with sealing ring 5 fixedly connected with it, the top of sealing ring 5 is fixedly connected with the inner wall of cavity 2, air outlet pipe 4 is provided with piston 6 slidingly connected with it, the outer side of piston 6 is slidingly connected with the inner wall of cavity 2, the top of piston 6 is fixedly connected with compression plate 7, compression plate 7 is provided with air outlet pipe 4 and slidingly connected with it, the top end of air outlet pipe 4 is provided with rotating box 8 rotatably connected with it, the top of rotating box 8 is communicated with gas conveying pipe 9, gas conveying pipe 9 is provided with protection structure 10.

[0034] In the application, sealing ring 5 can be used for sealing between air outlet pipe 4 and air compressor body 1, in use, first, gas conveying pipe 9 is connected with the machine to be driven, in use, high-pressure gas in air compressor body 1 will be input into cavity 2 through air inlet pipe 3, after the gas enters cavity 2, cavity 2 will be filled with gas quickly, then the pressure of the gas will push piston 6 to move upwards along the inner wall of cavity 2 and air outlet pipe 4, piston 6 will drive compression plate 7 to move in the process of moving upwards, compression plate 7 will first contact sealing ring 5 in the process of moving, with the movement of piston 6, in turn, compression plate 7 will press sealing ring 5 tightly on the inner wall of cavity 2, in turn, effectively avoid the situation that the sealing effect is poor due to the delamination of sealing ring 5, then when using the pneumatic machine that needs to move continuously, when the pneumatic machine moves and drives gas conveying pipe 9, gas conveying pipe 9 will rotate on air outlet pipe 4 through rotating box 8, in turn, effectively reduce the abrasion between gas conveying pipe 9 and air compressor body 1 caused by the pulling force generated by the rotation of gas conveying pipe 9, after the abrasion between gas conveying pipe 9 and air compressor body 1 is reduced, in turn, improve the service life of gas conveying pipe 9, indirectly improve the sealing effect of gas conveying pipe 9, when gas conveying pipe 9 is excessively bent for a long time, protection structure 10 can play a supporting role between gas conveying pipe 9 and air compressor body 1, in turn, effectively reduce the situation that gas conveying pipe 9 appears creases, further improve the service life of gas conveying pipe 9, reduce the situation that gas conveying pipe 9 leaks, improve the sealing effect of the device.

[0035] Please refer to Figs. 1-3 Wherein: protection structure 10 includes mounting plate 101, mounting plate 101 is provided with support cylinder 102 fixedly connected with it, support cylinder 102 is provided with gas conveying pipe 9.

[0036] When the gas conveying pipe 9 is excessively bent, the gas conveying pipe 9 pulls the mounting plate 101 to be offset, the mounting plate 101 is in contact with the rotating box 8 after being offset, the rotating box 8 supports the mounting plate 101, and the support and reinforcement of the gas conveying pipe 9 are realized, if the gas conveying pipe 9 is bent for a long time, the gas conveying pipe 9 is in contact with the inner wall of the supporting cylinder 102, the supporting cylinder 102 supports the gas conveying pipe 9, the crease of the gas conveying pipe 9 is effectively reduced, the service life of the gas conveying pipe 9 is further improved, the gas leakage of the gas conveying pipe 9 is reduced, and the sealing effect of the device is improved.

[0037] Please refer to Figs. 1-3 The supporting cylinder 102 is in a trumpet shape, the top of the supporting cylinder 102 is fixedly connected with a protective ring 11, and the protective ring 11 is in a semicircular cross section.

[0038] In the application, the supporting cylinder 102 is in a trumpet shape, so that the supporting cylinder 102 does not contact the gas conveying pipe 9 when the gas conveying pipe 9 is slightly bent, and the wear between the gas conveying pipe 9 and the supporting cylinder 102 is reduced, if the gas conveying pipe 9 is excessively bent, the supporting cylinder 102 supports the gas conveying pipe 9, and the wear of the gas conveying pipe 9 caused by the supporting cylinder 102 is effectively reduced, and the service life of the gas conveying pipe 9 is further improved.

[0039] Please refer to Figs. 3-5 The top of the pressing plate 7 is provided with annularly distributed sliding grooves 12, the inner wall of the sliding groove 12 is slidably connected with a pressing plate 13, one side of the pressing plate 13 is fixedly connected with a spring 14, the other end of the spring 14 is fixedly connected with the inner wall of the sliding groove 12, the inner top wall of the cavity 2 is provided with annularly distributed trapezoidal grooves 15, and the top of the pressing plate 13 is in contact with the inner wall of the trapezoidal groove 15.

[0040] In the application, the pressing plate 7 drives the annularly distributed pressing plates 13 to move upwards in the process, the pressing plates 13 slide along the inner wall of the corresponding trapezoidal groove 15 after moving upwards, the inner wall of the trapezoidal groove 15 is arranged in a trapezoidal shape, so that the pressing plates 13 slide along the inclined surface of the trapezoidal groove 15 after moving upwards, the pressing plates 13 are offset in the process of sliding along the inclined surface, the pressing plates 13 move towards the sealing ring 5 along the inner wall of the sliding groove 12 in the process of being offset, the uniformly distributed pressing plates 13 are gathered towards the sealing ring 5, until all the pressing plates 13 are in contact with the sealing ring 5, the sealing ring 5 is pressed by the pressing plates 13 with the continuous upward movement of the piston 6, the sealing ring 5 is tightly pressed between the air compressor body 1 and the air outlet pipe 4, the situation that the sealing effect is poor due to the peeling of the sealing ring 5 is effectively avoided, and the sealing effect of the device is further improved.

[0041] Please refer to Figs. 3-5The top of the pressing plate 13 is rotationally connected with a guide wheel 16, and the top of the guide wheel 16 is in rolling connection with the inner wall of the trapezoidal groove 15.

[0042] In the application, the guide wheel 16 rotationally connected with the top of the pressing plate 13 can reduce the friction between the inner wall of the trapezoidal groove 15 and the pressing plate 13, improve the smoothness of the device operation, reduce the wear and tear, and prolong the service life of the device.

[0043] Embodiment 2

[0044] Based on the above embodiments, please refer to Fig. 2 and 6 The top of the sealing plate 17 is fixedly connected with the top end of the air outlet pipe 4, and the outer side of the sealing plate 17 is in sliding connection with the inner wall of the rotating box 8.

[0045] In the application, the high-pressure gas is used as the power, and the gas is moved upwards on the rotating box 8 to separate from the air outlet pipe 4 after entering the inside of the rotating box 8. At this time, the sealing plate 17 can play a role in limiting the rotating box 8, and at this time, the inner bottom wall of the rotating box 8 is tightly attached to the sealing plate 17, thereby effectively improving the sealing effect between the rotating box 8 and the air outlet pipe 4.

[0046] Please refer to Fig. 2 and 6 The top and the bottom of the sealing plate 17 are fixedly connected with auxiliary rings 18, and the opposite sides of the two auxiliary rings 18 are embedded on the rotating box 8 and rotationally connected with the rotating box 8.

[0047] In the application, the auxiliary rings 18 fixedly connected with the top and the bottom of the sealing plate 17 can strengthen the sealing effect between the rotating box 8 and the sealing plate 17, thereby improving the practicability of the device.

[0048] Please refer to Fig. 2 and 6 The opposite sides of the two auxiliary rings 18 are fixedly connected with reinforcing rings 19, the inner top wall and the inner bottom wall of the rotating box 8 are provided with sealing grooves 20, the outer sides of the two reinforcing rings 19 are respectively in rotational connection with the inner walls of the two sealing grooves 20, and the cross sections of the two reinforcing rings 19 are trapezoidal.

[0049] In the application, when the high-pressure gas is used as the power to push the rotating box 8 upwards, the two reinforcing rings 19 will respectively extrude the corresponding sealing grooves 20, thereby effectively improving the auxiliary sealing effect of the reinforcing ring 19 on the sealing plate 17, and the trapezoidal cross section of the reinforcing ring 19 can achieve the purpose that the more the reinforcing ring 19 moves, the better the sealing effect of the reinforcing ring 19, thereby improving the practicability of the device.

[0050] Working principle: through the sealing ring 5 can be used for the sealing between the air pipe 4 and the air compressor body 1, in use, first, the gas pipe 9 is connected with the machine that needs to be driven, in the use process, the high pressure gas in the air compressor body 1 will be input to the cavity 2 inside through the air inlet pipe 3, the gas enters the cavity 2 inside will fill the cavity 2 inside with gas quickly, then through the pressure of gas will push the piston 6 along the inner wall of cavity 2 and the air pipe 4 up, the piston 6 in the process of up will drive the compression plate 7 to move, the compression plate 7 when moving will first contact with the sealing ring 5, with the movement of piston 6, in turn drive compression plate 7 to compress the sealing ring 5 on the inner wall of cavity 2, in turn effectively avoid the sealing ring 5 occurs off glue to cause the sealing effect to be poor, then in the use of the pneumatic machine that needs to move continuously, the pneumatic machine moves and drives the gas pipe 9, the gas pipe 9 will be rotated on the air pipe 4 through the rotating box 8, in turn effectively reduce the tensile force generated by the rotation of the gas pipe 9 and accelerate the wear between the gas pipe 9 and the air compressor body 1, after the wear between the gas pipe 9 and the air compressor body 1 is reduced, in turn improve the service life of the gas pipe 9, indirectly improve the sealing effect of the gas pipe 9, when the gas pipe 9 is excessively bent, the gas pipe 9 will pull the mounting plate 101 to be offset, the mounting plate 101 is offset after contacting with the rotating box 8, the rotating box 8 plays a supporting role to the mounting plate 101, in turn realize the support reinforcement of the gas pipe 9, if the gas pipe 9 is bent for a long time, the gas pipe 9 will contact with the inner wall of the supporting cylinder 102, the supporting cylinder 102 can play a supporting role to the gas pipe 9, in turn effectively reduce the crease of the gas pipe 9, further improve the service life of the gas pipe 9, reduce the gas leakage of the gas pipe 9, improve the sealing effect of the device.

[0051] The above is only the preferred specific embodiment of the present application; but the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical solution and the improvement concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, should be covered in the protection scope of the present application.

Claims

1. A sealing structure for a gas compressor comprising an air compressor body (1) characterized by: The air compressor body (1) is provided with a cavity (2), the cavity (2) is communicated with the air inlet pipe (3) and the air outlet pipe (4), the air outlet pipe (4) is provided with a sealing ring (5) fixedly connected therewith, the top of the sealing ring (5) is fixedly connected with the inner wall of the cavity (2), the air outlet pipe (4) is provided with a piston (6) slidingly connected therewith, the outer side of the piston (6) is slidingly connected with the inner wall of the cavity (2), the top of the piston (6) is fixedly connected with a compression plate (7), the compression plate (7) is provided on the air outlet pipe (4) and is slidingly connected therewith, the top end of the air outlet pipe (4) is provided with a rotating box (8) rotatably connected therewith, the top of the rotating box (8) is communicated with a gas conveying pipe (9), the gas conveying pipe (9) is provided with a protection structure (10). The top of the compression plate (7) is provided with a sliding groove (12) distributed in a ring shape, the inner wall of the sliding groove (12) is slidingly connected with a pressing plate (13), one side of the pressing plate (13) is fixedly connected with a spring (14), the other end of the spring (14) is fixedly connected with the inner wall of the sliding groove (12), the inner top wall of the cavity (2) is provided with a trapezoidal groove (15) distributed in a ring shape, the top of the pressing plate (13) is in contact with the inner wall of the trapezoidal groove (15). The top of the pressing plate (13) is rotatably connected with a guide wheel (16), the top of the guide wheel (16) is rollingly connected with the inner wall of the trapezoidal groove (15).

2. A seal arrangement for a gas compressor as claimed in claim 1, wherein: The protection structure (10) comprises a mounting plate (101), the mounting plate (101) is provided on the gas conveying pipe (9) and is fixedly connected therewith, the top of the mounting plate (101) is fixedly connected with a supporting cylinder (102), the supporting cylinder (102) is provided on the gas conveying pipe (9).

3. A seal arrangement for a gas compressor as claimed in claim 2, wherein: The supporting cylinder (102) is in the shape of a horn, the top of the supporting cylinder (102) is fixedly connected with a protection ring (11), the cross section of the protection ring (11) is in the shape of a semicircle.

4. A seal arrangement for a gas compressor as claimed in claim 1, wherein: The top end of the air outlet pipe (4) is fixedly connected with a sealing plate (17), the outer side of the sealing plate (17) is slidingly connected with the inner wall of the rotating box (8).

5. A seal arrangement for a gas compressor as claimed in claim 4, wherein: The top and bottom of the sealing plate (17) are fixedly connected with auxiliary rings (18), the opposite sides of the two auxiliary rings (18) are embedded on the rotating box (8) and are rotatably connected therewith.

6. A seal arrangement for a gas compressor as claimed in claim 5, wherein: The opposite sides of the two auxiliary rings (18) are fixedly connected with reinforcing rings (19), the inner top wall and the inner bottom wall of the rotating box (8) are provided with sealing grooves (20), the outer sides of the two reinforcing rings (19) are rotatably connected with the inner walls of the two sealing grooves (20), the cross sections of the two reinforcing rings (19) are in the shape of a trapezoid.

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