Sealing device of gas compressor

Abstract

The utility model relates to the technical field of gas compressors, in particular to a sealing device of a gas compressor, which comprises a cylinder, a support is fixed on the cylinder, the top end of the support is in threaded connection with a shell, the top end of the shell is in threaded connection with an end cover, and limit blocks are integrally formed on the outer walls of the end cover and the shell. Stop blocks are integrally formed on the outer walls of the support and the shell, pull rods are arranged on one side of the end cover and one side of the shell, first springs sleeve the two pull rods, inserting blocks are fixed to the bottom ends of the two pull rods, a piston rod of the air cylinder is sleeved with the end cover, the shell and the support, a check ring is fixed to the piston rod, and second springs are arranged on the two sides of the check ring; the piston rod is sleeved with two lantern rings, a connecting sleeve is integrally formed in the end cover, a top support is fixed to the bottom end of the connecting sleeve, a first O-shaped sealing ring is arranged in the top support, a bottom support is fixed in the support, and a second O-shaped sealing ring is arranged in the bottom support. The utility model is convenient to disassemble and convenient for subsequent installation.

Description

Technical Field

[0001] The utility model relates to the technical field of gas compressors, in particular to a sealing device for a gas compressor. Background Art

[0002] A gas compressor is a power device that converts mechanical energy into gas pressure energy. It is commonly used to provide gas power for pneumatic tools and is also commonly used in the petrochemical, drilling, and metallurgical industries to pressurize media such as oxygen, hydrogen, ammonia, natural gas, coke oven gas, and inert gases. To improve the sealing performance of gas compressors, a sealing device is generally installed on the gas compressor. Patent publication number CN214998100U, entitled "A Sealing Device for a Gas Compressor," states that the cooperation between the annular pressure block and the rubber spring sleeve allows the second sealing ring to press against the first sealing ring during the downward movement of the piston rod, thereby tightening the seal between the piston rod and the housing and improving the sealing effect. Furthermore, the cooperation between the annular cylinder, the annular pressure block, the annular ring, and the annular piston increases the air pressure in the annular cylinder as the piston rod moves upward, causing the third sealing ring to cling tightly to the housing and piston rod, further improving the sealing effect. However, the first, second, and third sealing rings of this gas compressor sealing device are all located within the integrated housing, making them difficult to replace. Utility Model Content

[0003] In view of the problems in the prior art, the utility model provides a sealing device for a gas compressor.

[0004] The technical solution adopted by the utility model to solve its technical problems is a sealing device for a gas compressor, comprising a cylinder, a support fixed on the cylinder, the top end of the support being threadedly connected to a shell, the top end of the shell being threadedly connected to an end cover, the end cover and the outer wall of the shell being integrally formed with a limiting block, the support and the outer wall of the shell being integrally formed with a stop block, a pull rod being provided on one side of the end cover and the shell, a first spring being sleeved on the two pull rods, a through hole being provided on the two limit blocks for the bottom end of the pull rod to pass through, and the two pull rods The bottom end of each block is fixed with an insert block, the top of each block is provided with a slot adapted to the insert block, the end cover, the outer shell and the support are all sleeved on the piston rod of the cylinder, the piston rod is fixed with a retaining ring, both sides of the retaining ring are provided with a second spring, the piston rod is sleeved with two rings, the retaining ring is located between the two rings, a connecting sleeve is integrally formed in the end cover, the bottom end of the connecting sleeve is fixed with a top support, a first O-ring is provided in the top support, a bottom support is fixed in the support, a second O-ring is provided in the bottom support, and a sealing gasket is fixed in the end cover and the outer shell.

[0005] By adopting the above technical solution, the piston rod drives the retaining ring to move downward, and the ring close to the second O-ring squeezes the second O-ring, which can improve the sealing. When the piston rod drives the retaining ring to move upward, the ring close to the first O-ring squeezes the first O-ring, which improves the sealing. When the sealing gasket, the first O-ring and the second O-ring need to be replaced, the two pull rods are lifted up, and the two plugs are disengaged from the slots on the two stoppers. The end cover and the shell can be removed from the shell by rotating the end cover and separating the shell from the support, thereby facilitating the replacement of the sealing gasket, the first O-ring and the second O-ring. During installation, the two pull rods are lifted up, the shell is threadedly connected to the support, the end cover is threadedly connected to the shell, and the two pull rods are loosened. The two first springs push the two plugs to move downward, and the two plugs are inserted into the slots on the two stoppers, which can prevent the shell and the end cover from loosening and affecting the sealing.

[0006] Specifically, a sealing sleeve is fixed in the end cover.

[0007] By adopting the above technical solution and setting the sealing sleeve, the sealing performance is further improved.

[0008] Specifically, the outer walls of the shell and the end cover are integrally formed with two protrusions.

[0009] By adopting the above technical solution, the arrangement of the protrusions facilitates the gripping and rotation of the housing and the end cover.

[0010] Specifically, each of the protrusions is integrally formed with a plurality of anti-slip protrusions.

[0011] By adopting the above technical solution, the provision of the anti-slip protrusions facilitates the rotation of the outer shell and the end cover.

[0012] Specifically, a pull block is fixed to the top end of the two pull rods.

[0013] By adopting the above technical solution, the setting of the pulling block is conducive to pulling the pulling rod.

[0014] Beneficial effects of the utility model:

[0015] (1) The utility model describes a sealing device for a gas compressor, in which the piston rod drives the retaining ring downward, and the sleeve ring close to the second O-ring squeezes the second O-ring, thereby improving the sealing performance. When the piston rod drives the retaining ring upward, the sleeve ring close to the first O-ring squeezes the first O-ring, thereby improving the sealing performance.

[0016] (2) The sealing device of a gas compressor described in the present invention, when the sealing gasket, the first O-ring and the second O-ring need to be replaced, the two pull rods are lifted up, and the two plugs are disengaged from the slots on the two stop blocks. The end cover and the shell can be removed from the shell by rotating the end cover and the shell, and the shell is separated from the support, thereby facilitating the replacement of the sealing gasket, the first O-ring and the second O-ring. During installation, the two pull rods are lifted up, the shell is threadedly connected to the support, the end cover is threadedly connected to the shell, and the two pull rods are loosened. The two first springs push the two plugs downward, and the two plugs are inserted into the slots on the two stop blocks, which can prevent the shell and the end cover from loosening and affecting the sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 For the utility model Figure 1 A magnified view of the structure at center A;

[0020] Figure 3 It is a cross-sectional view of the present utility model.

[0021] In the figure: 1. Cylinder; 2. Support; 3. Housing; 4. Bump; 5. End cover; 50. Connecting sleeve; 6. Piston rod; 7. Sealing sleeve; 8. Retaining ring; 9. Second spring; 10. Top support; 11. First O-ring; 12. Collar; 13. Sealing gasket; 14. Second O-ring; 15. Bottom support; 16. Stopper; 17. Limiting block; 18. Pull rod; 180. Pull block; 19. First spring; 20. Insert block. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] In order to facilitate the replacement of the sealing gasket 13, the first O-ring 11 and the second O-ring 14, as an embodiment of the present invention, Figure 1 、 Figure 2 、 Figure 3As shown, the sealing device of a gas compressor described in the present invention includes a cylinder 1, a support 2 is fixed to the cylinder 1 by bolts, the top of the support 2 is threadedly connected to the shell 3, the top of the shell 3 is threadedly connected to the end cover 5, the outer walls of the end cover 5 and the shell 3 are integrally formed with a limiting block 17, the outer walls of the support 2 and the shell 3 are integrally formed with a stopper 16, one side of the end cover 5 and the shell 3 is provided with a pull rod 18, the two pull rods 18 are each sleeved with a first spring 19, the two limit blocks 17 are each provided with a through hole for the bottom end of the pull rod 18 to pass through, the bottom ends of the two pull rods 18 are welded and fixed with an insert 20, and the two The top of each block 16 is provided with a slot adapted to the insert block 20, and the end cover 5, the outer shell 3 and the support 2 are all sleeved on the piston rod 6 of the cylinder 1, and a retaining ring 8 is fixed on the piston rod 6, and a second spring 9 is provided on both sides of the retaining ring 8. Two rings 12 are sleeved on the piston rod 6, and the retaining ring 8 is located between the two rings 12. A connecting sleeve 50 is integrally formed in the end cover 5, and a top support 10 is welded and fixed to the bottom end of the connecting sleeve 50, and a first O-ring 11 is provided in the top support 10, and a bottom support 15 is welded and fixed in the support 2, and a second O-ring 14 is provided in the bottom support 15. A sealing gasket 13 is fixed to the end cover 5 and the outer shell 3 by adhesive.

[0024] When in use, the piston rod 6 drives the retaining ring 8 to move downward, and the collar 12 close to the second O-ring 14 moves downward and squeezes the second O-ring 14, which can improve the sealing performance. When the piston rod 6 drives the retaining ring 8 to move upward, the collar 12 close to the first O-ring 11 moves upward and squeezes the first O-ring 11, which improves the sealing performance. When it is necessary to replace the sealing gasket 13, the first O-ring 11 and the second O-ring 14, the two pull rods 18 are lifted, and the two plugs 20 are removed from the slots on the two stoppers 16. , rotate the end cover 5 and the shell 3 by hand to remove the end cover 5 from the shell 3, separate the shell 3 from the support 2, and then facilitate the replacement of the sealing gasket 13, the first O-ring 11 and the second O-ring 14. During installation, lift the two pull rods 18, thread the shell 3 and the support 2, thread the end cover 5 and the shell 3, loosen the two pull rods 18, and the two first springs 19 push the two plugs 20 downward. The two plugs 20 are inserted into the slots on the two stoppers 16, which can prevent the shell 3 and the end cover 5 from loosening and affecting the sealing.

[0025] In order to improve the sealing performance, for example, Figure 3 As shown, a sealing sleeve 7 is fixed inside the end cover 5 by adhesive.

[0026] In order to facilitate the rotation of the housing 3 and the end cover 5, for example, Figure 1 As shown, the outer walls of the housing 3 and the end cover 5 are integrally formed with two protrusions 4.

[0027] In order to facilitate the gripping of the protrusion 4, for example, Figure 1 As shown, each of the protrusions 4 is integrally formed with a plurality of anti-slip protrusions.

[0028] In order to facilitate pulling the pull rod 18, for example, Figure 2 As shown, a pull block 180 is welded and fixed to the top end of the two pull rods 18 .

[0029] When the utility model is in use, the piston rod 6 drives the retaining ring 8 to move downward, and the collar 12 close to the second O-ring 14 moves downward and squeezes the second O-ring 14, which can improve the sealing performance. When the piston rod 6 drives the retaining ring 8 to move upward, the collar 12 close to the first O-ring 11 moves upward and squeezes the first O-ring 11, thereby improving the sealing performance.

[0030] When the sealing gasket 13, the first O-ring 11, and the second O-ring 14 need to be replaced, the two pull blocks 180 are lifted up, and the two insert blocks 20 are removed from the slots on the two stop blocks 16. The end cover 5 and the housing 3 are rotated by hand to remove the end cover 5 from the housing 3, and the housing 3 is separated from the support 2, thereby facilitating the replacement of the sealing gasket 13, the first O-ring 11, and the second O-ring 14;

[0031] During installation, lift up the two pull blocks 180, thread the shell 3 and the support 2, thread the end cover 5 and the shell 3, loosen the two pull blocks 180, and the two first springs 19 push the two plug blocks 20 downward. The two plug blocks 20 are inserted into the slots on the two stop blocks 16, which can prevent the shell 3 and the end cover 5 from loosening and affecting the sealing.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions in the specification are only for the purpose of illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, and such changes and improvements fall within the scope of protection claimed by the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents. Any matters not described in detail in the present invention belong to the prior art known to those skilled in the art.

Claims

1. A sealing device for a gas compressor, characterized in that: The invention comprises a cylinder (1), a support (2) is fixed on the cylinder (1), the top end of the support (2) is threadedly connected to a shell (3), the top end of the shell (3) is threadedly connected to an end cover (5), the outer walls of the end cover (5) and the shell (3) are integrally formed with a limit block (17), the outer walls of the support (2) and the shell (3) are integrally formed with a stop block (16), one side of the end cover (5) and the shell (3) are provided with a pull rod (18), the two pull rods (18) are both sleeved with a first spring (19), the two limit blocks (17) are both provided with a through hole for the bottom end of the pull rod (18) to pass through, the bottom ends of the two pull rods (18) are both fixed with an insert block (20), the top ends of the two stop blocks (16) are both provided with a plug block ( 20) adapted slot, the end cover (5), the housing (3) and the support (2) are all sleeved on the piston rod (6) of the cylinder (1), a retaining ring (8) is fixed on the piston rod (6), and a second spring (9) is provided on both sides of the retaining ring (8), two rings (12) are sleeved on the piston rod (6), and the retaining ring (8) is located between the two rings (12), a connecting sleeve (50) is integrally formed in the end cover (5), a top support (10) is fixed at the bottom end of the connecting sleeve (50), a first O-type sealing ring (11) is provided in the top support (10), a bottom support (15) is fixed in the support (2), a second O-type sealing ring (14) is provided in the bottom support (15), and a sealing gasket (13) is fixed in the end cover (5) and the housing (3).

2. A sealing device for a gas compressor according to claim 1, characterized in that: A sealing sleeve (7) is fixed inside the end cover (5).

3. The sealing device for a gas compressor according to claim 1, characterized in that: The outer walls of the housing (3) and the end cover (5) are integrally formed with two protrusions (4).

4. A sealing device for a gas compressor according to claim 3, characterized in that: Each of the protrusions (4) is integrally formed with a plurality of anti-slip protrusions.

5. The sealing device for a gas compressor according to claim 1, characterized in that: Pull blocks (180) are fixed to the top ends of the two pull rods (18).

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