A pipe joint for oil-free compressor that prevents seal damage

Abstract

The utility model discloses a pipe joint for an oil-free compressor that prevents seal damage, and relates to the technical field of oil-free compressors, including a connecting sleeve and a connecting straight pipe, and also including a seal and a reinforcement piece, wherein the seal includes a connecting pipe and a placement table, wherein the placement table is engaged with the inner side of the connecting sleeve, and a rubber sealing ring is engaged with the inner edge of the placement groove, and the reinforcement piece includes a vent pipe and a fixing ring, wherein the fixing ring is fixedly connected to the outer side of the vent pipe, and the bottom of the vent pipe is inserted between the connecting pipe and the inner side of the rubber sealing ring, and the fixing ring is matched with the top of the rubber sealing ring. The utility model adds a group of reinforcement pieces for ventilation in the middle of the rubber sealing ring at the connecting joint, and the fixing ring extrude and reinforce the top of the rubber sealing ring to protect the rubber sealing ring, prevent the sealing ring from being broken by high-pressure gas, increase the service life of the rubber sealing ring, and reduce maintenance costs.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-free compressors, in particular to a pipeline joint for oil-free compressors which is resistant to seal damage. Background Art

[0002] An oil-free compressor is a special type of air compressor that does not use oil as a lubricating or cooling medium during the air compression process. This design is very important for applications that require clean, dry, oil-free compressed air. The compressed air pressure produced by an oil-free compressor can be low, medium or high pressure, depending on the design of the compressor and the application requirements.

[0003] The installation method of the pipe connection gasket of the oil-free compressor is very important to ensure the sealing and reliability of the pipeline system. The following are the steps for installing the gasket: select the appropriate gasket material, place the gasket in the sealing groove of the pipe joint, ensure that it is flat and wrinkle-free, and completely covers the sealing surface, align the butt-jointed pipes with the joints, slowly insert them until the end of the pipe contacts the gasket, and then twist them together.

[0004] However, when high-pressure gas flows inside the oil-free compressor pipeline, the above connection method is too simple. The gasket may rupture because it cannot withstand excessive pressure. The high-pressure airflow breaks through the gasket, causing internal gas leakage. In order to repair the leakage, more frequent maintenance and replacement of the gasket may be required, increasing maintenance costs. Utility Model Content

[0005] The utility model aims to provide a pipeline joint for an oil-free compressor which is resistant to seal damage, so as to solve the technical problem that the rubber sealing pad used for the pipeline joint in the prior art is easily broken by high-pressure gas.

[0006] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0007] A pipe joint for an oil-free compressor that prevents seal damage, comprising a connecting sleeve and a connecting straight pipe, wherein a thread groove is provided inside the connecting sleeve, a connecting thread matching the thread groove is provided outside the connecting straight pipe, an end of the connecting straight pipe close to the connecting sleeve is connected with an extrusion ring, and further comprising:

[0008] A sealing member, the sealing member comprises a connecting tube and a placing platform, a placing groove is provided on the top of the placing platform, the connecting tube is connected to the bottom of the placing platform and communicates with the placing groove, the bottom of the connecting sleeve is sleeved on the outside of the connecting tube, the placing platform is clamped on the inside of the connecting sleeve, and a rubber sealing ring is clamped on the inner edge of the placing groove;

[0009] The reinforcement piece includes a vent pipe and a fixing ring, the fixing ring is fixedly connected to the outside of the vent pipe, the bottom of the vent pipe is inserted into the inner side of the connecting pipe and the rubber sealing ring, the fixing ring cooperates with the top of the rubber sealing ring, and a connecting structure is arranged between the connecting pipe and the vent pipe.

[0010] As a further solution of the utility model: the connecting structure includes vertical grooves, transverse grooves and clamping blocks, and a plurality of the vertical grooves and clamping blocks are provided. The vertical grooves are respectively vertically opened at the bottom of the ventilation pipe, and a plurality of transverse grooves are opened on the ventilation pipe, and the transverse grooves are connected to the tops of the corresponding vertical grooves. The clamping blocks are fixed on the inner wall of the connecting pipe, and the clamping blocks are engaged with the corresponding transverse grooves.

[0011] As a further solution of the utility model: the width of the vertical groove is greater than the width of the block.

[0012] As a further solution of the utility model: a magnetic block is arranged on the inner side of the transverse groove away from one end of the vertical groove, and the magnetic block cooperates with the clamping block.

[0013] As a further solution of the utility model: the card block is made of ferromagnetic material.

[0014] As a further solution of the utility model: the rubber sealing ring is aligned with the extrusion ring, and the rubber sealing ring is matched with the extrusion ring.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model adds a group of reinforcement pieces for ventilation in the middle of the rubber sealing ring at the connection joint, and the fixing ring squeezes and reinforces the top of the sealing ring to protect the rubber sealing ring, and transmits the high-pressure gas from the ventilation pipe of the reinforcement piece to avoid the high-pressure gas from exerting excessive pressure on the rubber sealing ring, thereby breaking the rubber sealing ring, thereby enhancing the service life of the rubber sealing ring and reducing maintenance costs.

[0017] 2. When the rubber sealing ring needs to be replaced, the reinforcing piece is screwed counterclockwise to rotate the block from the horizontal groove to the vertical groove. Then the reinforcing piece is pulled to slide the block out of the vertical groove. Finally, the ventilation pipe is separated from the connecting pipe, and the rubber sealing ring is buckled out from the inside of the placement groove. The rubber sealing ring can be replaced, which is convenient to replace and improves the efficiency of replacing the rubber sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the connection structure of the extrusion ring and the connecting straight pipe of the utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the sealing pad and the placement table of the utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure between the fixing ring and the sealing gasket of the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the fixed ring and the ventilation pipe in the utility model.

[0024] In the figure: 1. sealing member; 2. connecting pipe; 3. placing table; 4. connecting sleeve; 5. threaded groove; 6. connecting straight pipe; 7. extrusion ring; 8. rubber sealing ring; 9. vent pipe; 10. fixing ring; 11. vertical groove; 12. horizontal groove; 13. magnetic block; 14. clamping block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-Figure 5 As shown, a pipeline joint for an oil-free compressor that prevents seal damage includes a connecting sleeve 4 and a connecting straight pipe 6. A thread groove 5 is provided at the upper end of the connecting sleeve 4. A connecting thread that matches the thread groove 5 is provided on the outer side of the connecting straight pipe 6. The connecting thread is threadedly connected to the thread groove 5. An end of the connecting straight pipe 6 close to the connecting sleeve 4 is fixedly connected to an extrusion ring 7. An end of the connecting straight pipe 6 far from the extrusion ring 7 is fixedly connected to an air transmission pipeline. The connecting straight pipe 6 also includes a sealing member 1 and a reinforcing member.

[0027] The sealing member 1 comprises a connecting pipe 2 and a placing platform 3. A placing groove is provided on the top of the placing platform 3. The connecting pipe 2 is fixedly connected to the bottom of the placing platform 3 and communicated with the placing groove. One end of the connecting pipe 2 away from the placing platform 3 is fixedly connected to an air transmission pipeline, and the air transmission pipeline is used to connect various components of the oil-free compressor. The bottom of the connecting sleeve 4 is movably sleeved on the outside of the connecting pipe 2. The placing platform 3 is movably engaged with the inside of the connecting sleeve 4. A rubber sealing ring 8 is engaged with the inner edge of the placing groove.

[0028] The reinforcement includes a vent pipe 9 and a fixing ring 10. The fixing ring 10 is fixedly connected to the outside of the vent pipe 9. The bottom of the vent pipe 9 is inserted into the inner side of the connecting pipe 2 and the rubber sealing ring 8. The fixing ring 10 fits the top of the rubber sealing ring 8. The fixing ring 10 is used to compress the rubber sealing ring 8. A connecting structure is provided between the connecting pipe 2 and the vent pipe 9.

[0029] In some specific embodiments, such as Figure 4 or Figure 5 As shown, in order to facilitate the fixing ring 10 to press the top of the rubber sealing ring 8, the connection structure includes a vertical groove 11, a horizontal groove 12 and a block 14. There are a plurality of vertical grooves 11 and a plurality of blocks 14. The vertical grooves 11 are respectively vertically opened at the bottom of the ventilation pipe 9. The ventilation pipe 9 is provided with a plurality of horizontal horizontal grooves 12, and the horizontal grooves 12 are connected to the side of the corresponding vertical grooves 11. The block 14 is fixedly connected to the inner wall of the connecting pipe 2, and the block 14 is engaged with the corresponding horizontal groove 12, so that the vertical groove 11 is aligned with the corresponding block 14 to press the reinforcement downward, and the block 14 is engaged with the vertical groove 11, and then the reinforcement is screwed so that the block 14 is engaged with the horizontal groove 12, so that the reinforcement is fixed, and at the same time the fixing ring 10 can press and fix the rubber sealing ring 8.

[0030] In some specific embodiments, such as Figure 4 or Figure 5 As shown, in order to facilitate the clamping block 14 to be clamped into the interior of the transverse groove 12 , the width of the vertical groove 11 is greater than the width of the clamping block 14 , and the clamping block 14 slides along the corresponding vertical groove 11 , and the reinforcing member is rotated so that the clamping block 14 is clamped into the transverse groove 12 .

[0031] In some specific embodiments, such as Figure 5 As shown, in order to prevent the clamping block 14 from being separated from the transverse groove 12 , a magnetic block 13 is fixedly provided at one end of the inner side of the transverse groove 12 away from the vertical groove 11 , and the magnetic block 13 cooperates with the clamping block 14 .

[0032] In some specific implementation schemes, in order to facilitate the magnetic attraction between the magnetic block 13 and the clamping block 14, the clamping block 14 is made of ferromagnetic material. When the clamping block 14 is inserted into the transverse groove 12, the reinforcing piece is screwed to make the clamping block 14 fit with the magnetic block 13 to achieve a magnetic attraction effect and prevent the reinforcing piece from rotating, thereby causing the fixing ring 10 to be unable to press the top of the rubber sealing ring 8.

[0033] In some specific embodiments, such as Figure 1 As shown, in order to facilitate the sealing of the connection, the rubber sealing ring 8 is aligned with the extrusion ring 7, and the rubber sealing ring 8 cooperates with the extrusion ring 7, the threaded groove 5 of the connecting sleeve 4 is connected to the outer thread of the connecting straight pipe 6, and the connecting sleeve 4 is screwed to make the extrusion ring 7 squeeze the rubber sealing ring 8 to achieve sealing of the pipeline connection.

[0034] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0035] In actual operation, firstly, the connecting sleeve 4 is sleeved on the outside of the connecting pipe 2, the placing platform 3 is engaged with the inside of the connecting sleeve 4, and then the rubber sealing ring 8 is engaged with the inside of the placing groove, and then the ventilation pipe 9 of the reinforcement piece is inserted and connected between the rubber sealing ring 8 and the inside of the connecting pipe 2. At the same time, the vertical groove 11 slides from both sides of the block 14 until the fixing ring 10 squeezes the upper surface of the rubber sealing ring 8, and then the reinforcement piece is screwed clockwise to make the block 14 engage with the corresponding transverse groove 12, and the rubber sealing ring 8 is realized through the fixing ring 10. The fixing is screwed until the block 14 fits with the magnetic block 13, and the magnetic block 13 and the block 14 are magnetically attracted to each other to prevent the reinforcing piece from rotating. Finally, the connecting sleeve 4 is screwed to the outside of the connecting straight pipe 6 to achieve threaded connection until the extrusion ring 7 squeezes the rubber sealing ring 8 to achieve sealing at the pipe connection. During ventilation, high-pressure gas passes through the inside of the ventilation pipe 9, and the fixing ring 10 limits and fixes the rubber sealing ring 8, thereby preventing the high-pressure gas from breaking through the rubber sealing ring 8, thereby increasing the service life of the rubber sealing ring 8 and reducing maintenance costs.

[0036] When the rubber sealing ring 8 needs to be replaced, the reinforcing piece is screwed counterclockwise to rotate the block 14 from the horizontal groove 12 to the vertical groove 11, and then the reinforcing piece is pulled, and the block 14 slides out from the vertical groove 11, and finally the ventilation pipe 9 is separated from the connecting pipe 2, and the rubber sealing ring 8 is buckled out from the inside of the placement groove, and the rubber sealing ring 8 can be replaced. The replacement is convenient and the replacement efficiency of the rubber sealing ring 8 is improved.

[0037] Several embodiments of the utility model are described in detail above, but the embodiments of the utility model are not limited thereto and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A pipeline joint for an oil-free compressor that prevents seal damage, comprising a connecting sleeve (4) and a connecting straight pipe (6), wherein a thread groove (5) is provided inside the connecting sleeve (4), and a connecting thread that matches the thread groove (5) is provided outside the connecting straight pipe (6), and an extrusion ring (7) is connected to one end of the connecting straight pipe (6) close to the connecting sleeve (4), characterized in that: Also includes: A sealing member (1), the sealing member (1) comprising a connecting tube (2) and a placing platform (3), the placing platform (3) having a placing groove on the top, the connecting tube (2) being connected to the bottom of the placing platform (3) and being in communication with the placing groove, the bottom of the connecting sleeve (4) being sleeved on the outside of the connecting tube (2), the placing platform (3) being clamped on the inside of the connecting sleeve (4), and a rubber sealing ring (8) being clamped on the inner edge of the placing groove; A reinforcement piece, the reinforcement piece comprising a vent pipe (9) and a fixing ring (10), the fixing ring (10) being fixedly connected to the outside of the vent pipe (9), the bottom of the vent pipe (9) being inserted into the inside of the connecting pipe (2) and the rubber sealing ring (8), the fixing ring (10) being matched with the top of the rubber sealing ring (8), and a connecting structure being matched between the connecting pipe (2) and the vent pipe (9).

2. A seal-damage-resistant oil-free compressor pipe joint according to claim 1, characterized in that: The connection structure comprises a vertical groove (11), a horizontal groove (12) and a clamping block (14), wherein a plurality of the vertical grooves (11) and the clamping block (14) are provided, wherein the vertical grooves (11) are respectively vertically opened at the bottom of the ventilation pipe (9), wherein a plurality of horizontal grooves (12) are opened on the ventilation pipe (9), and the horizontal grooves (12) are connected with the tops of the corresponding vertical grooves (11), and the clamping block (14) is fixed on the inner wall of the connection pipe (2), and the clamping block (14) is clamped with the corresponding horizontal groove (12).

3. A seal-damage-resistant oil-free compressor pipe joint according to claim 2, characterized in that: The width of the vertical groove (11) is greater than the width of the clamping block (14).

4. A seal-damage-resistant oil-free compressor pipe joint according to claim 2, characterized in that: A magnetic block (13) is provided on one end of the inner side of the transverse groove (12) away from the vertical groove (11), and the magnetic block (13) cooperates with a clamping block (14).

5. A seal-damage-resistant oil-free compressor pipe joint according to claim 4, characterized in that: The clamping block (14) is made of ferromagnetic material.

6. The seal damage-resistant oil-free compressor pipe joint according to claim 1, characterized in that: The rubber sealing ring (8) is aligned with the extrusion ring (7), and the rubber sealing ring (8) matches the extrusion ring (7).

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