Scraper cylinder sealing structure for waste gas treatment equipment

Abstract

The utility model discloses a scraper cylinder sealing structure for waste gas treatment equipment, and belongs to the technical field of cylinder sealing. A scraper air cylinder sealing structure for waste gas treatment equipment comprises an air cylinder body and a piston rod, the piston rod is arranged in the air cylinder body, a connecting piece is arranged between the air cylinder body and the piston rod, the air cylinder body and the connecting piece are matched in a sleeved mode, and the piston rod penetrates through the connecting piece to be matched in a sleeved mode. The piston rod and the connecting piece are coaxially assembled, the surface of the piston rod is sleeved with a fixing ring, a piston sealing ring is arranged below the fixing ring, the piston sealing ring is connected to the inner wall of the connecting piece in a sleeved mode, an O-shaped sealing ring is arranged below the piston sealing ring, and the O-shaped sealing ring and the piston rod are arranged in a sleeved mode. The utility model aims to solve the problem that in the prior art, a scraper cylinder can be in contact with waste gas needing to be treated in the working process, and the waste gas can damage the scraper cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder sealing, in particular to a scraper cylinder sealing structure used for waste gas treatment equipment. Background Art

[0002] The cylinder can work reliably under harsh conditions, and is easy to operate and basically maintenance-free. The cylinder is good at reciprocating linear motion, and is especially suitable for the most common transmission requirements in industrial automation - linear transportation of workpieces. Moreover, the cylinder adjustment is simple and can easily achieve stable speed control, which has become the biggest feature and advantage of the cylinder drive system. Many types of gases are used and generated in the production process of chips and LCD panels. Most of the exhaust gas needs to be treated by exhaust gas treatment equipment to meet the standard of harmless emission. The mechanical motion structure driven by the scraper cylinder is used in the exhaust gas treatment process;

[0003] Many scraper cylinders are used in exhaust gas treatment equipment. The existing scraper cylinders will come into contact with the exhaust gas that needs to be treated during operation. The exhaust gas will damage the scraper cylinders. The scraper cylinders need to be regularly maintained or replaced, which accelerates the damage of the scraper cylinders to a certain extent. The existing cylinder maintenance procedures are cumbersome and have no protective effect on the cylinder rod, resulting in a short cylinder life and high maintenance costs, which increases the product production cost. Therefore, a scraper cylinder sealing structure for exhaust gas treatment equipment is proposed. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the scraper cylinder will contact the waste gas to be treated during operation, and the waste gas will damage the scraper cylinder, and proposes a scraper cylinder sealing structure for waste gas treatment equipment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A scraper cylinder sealing structure for exhaust gas treatment equipment includes a cylinder body and a piston rod, wherein the piston rod is arranged inside the cylinder body, a connecting piece is arranged between the cylinder body and the piston rod, the cylinder body and the connecting piece are fitted together, the piston rod passes through the connecting piece and is fitted together, and the piston rod and the connecting piece are coaxially assembled, a fixing ring is fitted on the surface of the piston rod, a piston sealing ring is arranged below the fixing ring, the piston sealing ring is fitted and connected to the inner wall of the connecting piece, an O-ring is arranged below the piston sealing ring, the O-ring is fitted with the piston rod, and the inner wall of the connecting piece is provided with a groove fitted with the O-ring.

[0007] Preferably, a sealing gasket is provided at the connection between the cylinder body and the end surface of the connecting piece, and the cross-section of the sealing gasket is a rectangular structure.

[0008] Preferably, a rectangular sealing groove is provided on the surface of the piston sealing ring, and the rectangular sealing groove fits tightly with the connecting piece.

[0009] Preferably, a dustproof sealing ring is provided on the inner wall of the bottom of the connecting piece, and the dustproof sealing ring is assembled with the piston rod.

[0010] Preferably, a circular arc sealing groove is provided on the surface of the dustproof sealing ring, and the circular arc sealing groove is tightly fitted with the connecting piece.

[0011] Preferably, a cavity is provided inside the cylinder body, a piston member is provided at the top end of the piston rod, and the piston member is slidably assembled in the cavity.

[0012] Preferably, the inner wall of the connecting piece is provided with connecting threads, and the connecting piece is screwed and connected to the cylinder body via the connecting threads.

[0013] Compared with the prior art, the utility model provides a scraper cylinder sealing structure for waste gas treatment equipment, which has the following beneficial effects:

[0014] 1. By assembling a connector between the cylinder body and the piston rod, the piston rod seal ring and the O-ring are embedded in the inner wall of the connector and in close contact with the piston rod, which prevents the exhaust gas from contacting the cylinder body while the piston rod moves, reduces damage to the sealing structure, and reduces the frequency of regular maintenance or replacement of the cylinder body in actual application, thereby increasing the service life of the cylinder body;

[0015] 2. The bottom of the device connector is equipped with a dustproof sealing ring, which can effectively remove impurities attached to the surface of the piston rod, prevent external impurities from damaging the sealing structure of the cylinder body, and prevent external dust from entering the interior. At the same time, it also reduces the wear of the equipment and improves the overall performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural diagram of a scraper cylinder sealing structure for waste gas treatment equipment of the utility model

[0017] Figure 2 This is a schematic diagram of the internal structure of a scraper cylinder sealing structure for waste gas treatment equipment of the utility model;

[0018] Figure 3 It is a schematic diagram of the exploded structure of some components of a scraper cylinder sealing structure for exhaust gas treatment equipment of the utility model;

[0019] Figure 4 This is a schematic diagram of the piston sealing ring structure of a scraper cylinder sealing structure for exhaust gas treatment equipment of the utility model;

[0020] Figure 5 This is a schematic diagram of a dustproof sealing ring structure of a scraper cylinder sealing structure for an exhaust gas treatment device according to the utility model;

[0021] Figure 6 The utility model is a schematic diagram of the exploded structure of a scraper cylinder sealing structure for waste gas treatment equipment.

[0022] In the figure:

[0023] 1. Cylinder body; 2. Connecting parts; 3. Piston rod; 4. Cavity; 5. Piston part; 6. Sealing gasket; 7. Retaining ring; 8. Piston sealing ring; 9. O-ring; 10. Connecting thread; 11. Dustproof sealing ring; 12. Rectangular sealing groove; 13. Arc sealing groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-6 , a scraper cylinder sealing structure for exhaust gas treatment equipment, including a cylinder body 1 and a piston rod 3, a piston rod 3 is arranged inside the cylinder body 1, a cavity 4 is arranged inside the cylinder body 1, a piston member 5 is arranged at the top of the piston rod 3, the piston member 5 is slidably assembled in the cavity 4 to ensure the stable operation of the piston member 5 inside the cylinder body 1, a connecting member 2 is arranged between the cylinder body 1 and the piston rod 3, the cylinder body 1 and the connecting member 2 are fitted together, the piston rod 3 penetrates the connecting member 2 and is fitted and adapted, and the piston rod 3 and the connecting member 2 are coaxially assembled, a fixing ring 7 is fitted on the surface of the piston rod 3, a piston sealing ring 8 is arranged below the fixing ring 7, the piston sealing ring 8 is fitted and connected to the inner wall of the connecting member 2, an O-ring 9 is arranged below the piston sealing ring 8, the O-ring 9 is fitted with the piston rod 3, and a groove adapted to the O-ring 9 is opened on the inner wall of the connecting member 2.

[0026] In this embodiment, a connecting thread 10 is provided on the inner wall of the connecting member 2, and the connecting member 2 is screwed and connected to the cylinder body 1 through the connecting thread 10. A sealing structure is formed between the cylinder body 1 and the piston rod 3 through the connecting member 2. The connecting member 2 is screwed and connected to the cylinder body 1 through the connecting thread 10. A fixing ring 7 is installed on the inner wall of the through hole of the connecting member 2 to fit the piston rod 3. The fixing ring 7 is fixed to one end of the piston rod 3 and used as a stopper for a linear motion mechanism with the piston rod 3 as a guide to avoid metal sound caused by contact between metal parts. The piston rod 3 sealing ring and the O-ring 9 are embedded in the inner wall of the connecting member 2 and are in close contact with the piston rod 3. When the piston rod 3 moves, the exhaust gas is prevented from contacting the cylinder body 1, thereby reducing damage to the sealing structure. In actual applications, the arrangement method and number of the fixing ring 7 and the piston sealing ring 8 can also be changed according to actual needs, and no specific limitation is made here.

[0027] Reference Figure 1-Figure 2 On the basis of the above-mentioned embodiment, a sealing gasket 6 is provided at the connection between the cylinder body 1 and the end surface of the connector 2. The cross section of the sealing gasket 6 is a rectangular structure. By providing the sealing gasket 6, the connector 2 has good softness and compressibility, preventing impurities from entering the connection to improve the sealing effect of the device.

[0028] Reference Figure 2-Figure 4 A rectangular sealing groove 12 is provided on the surface of the piston sealing ring 8, and the rectangular sealing groove 12 is tightly fitted with the connecting piece 2. By providing the rectangular sealing groove 12, the piston sealing ring 8 can further increase the contact area with the connecting piece 2, and at the same time further prevent small impurities from entering the sealing structure, thereby preventing damage to the components of the cylinder body 1.

[0029] Reference Figure 2-Figure 3 A dustproof sealing ring 11 is provided on the inner wall at the bottom of the connecting piece 2, and the dustproof sealing ring 11 is assembled with the piston rod 3. The dustproof sealing ring 11 is provided to further increase the sealing effect of the device, prevent dust and other external impurities from entering the moving cylinder, and improve the use effect of the device.

[0030] Reference Figure 2-Figure 5 A circular arc sealing groove 13 is provided on the surface of the dustproof sealing ring 11, and the circular arc sealing groove 13 is tightly fitted with the connecting piece 2. The dustproof sealing ring 11 can effectively remove impurities attached to the surface of the piston rod 3, prevent external impurities from damaging the sealing structure of the cylinder body 1, and prevent external dust from entering the interior. At the same time, it also reduces the wear of the device and extends its service life.

[0031] Working principle: The inner wall of the connector 2 is provided with a connecting thread 10, and the connector 2 is screwed and connected to the cylinder body 1 through the connecting thread 10. The cylinder body 1 and the piston rod 3 form a sealing structure through the connector 2. The connector 2 is screwed and connected to the cylinder body 1 through the connecting thread 10. A fixing ring 7 is installed on the inner wall of the through hole of the connector 2 to fit the piston rod 3. The fixing ring 7 is fixed to one end of the piston rod 3 and used as a stopper for the linear motion mechanism with the piston rod 3 as a guide rail to avoid metal noise caused by contact between metal parts. The piston rod 3 sealing ring and the O-ring 9 are embedded in the inner wall of the connector 2. The wall is in close contact with the piston rod 3, and the exhaust gas is prevented from contacting the cylinder body 1 when the piston rod 3 moves, thereby reducing damage to the sealing structure. A dustproof sealing ring 11 is provided on the inner wall at the bottom of the connecting piece 2 to further increase the sealing effect of the device and prevent dust and other external impurities from entering the moving cylinder, thereby improving the use effect of the device. By providing the dustproof sealing ring 11, impurities attached to the surface of the piston rod 3 can be effectively removed, and external impurities can be prevented from damaging the sealing structure of the cylinder body 1, thereby preventing external dust from entering the interior, and at the same time reducing the wear of the device and extending its service life.

[0032] The above description 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0034] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A scraper cylinder sealing structure for an exhaust gas treatment device, comprising a cylinder body (1) and a piston rod (3), characterized in that: A piston rod (3) is arranged inside the cylinder body (1), a connecting piece (2) is arranged between the cylinder body (1) and the piston rod (3), the cylinder body (1) and the connecting piece (2) are fitted together, the piston rod (3) penetrates the connecting piece (2) and is fitted together, and the piston rod (3) and the connecting piece (2) are coaxially assembled, a fixing ring (7) is fitted on the surface of the piston rod (3), a piston sealing ring (8) is arranged below the fixing ring (7), the piston sealing ring (8) is fitted and connected to the inner wall of the connecting piece (2), an O-type sealing ring (9) is arranged below the piston sealing ring (8), the O-type sealing ring (9) is fitted together with the piston rod (3), and a groove matching the O-type sealing ring (9) is opened on the inner wall of the connecting piece (2).

2. The scraper cylinder sealing structure for exhaust gas treatment equipment according to claim 1, characterized in that: A sealing gasket (6) is provided at the connection point between the end surfaces of the cylinder body (1) and the connecting piece (2); the cross section of the sealing gasket (6) is a rectangular structure.

3. The scraper cylinder sealing structure for exhaust gas treatment equipment according to claim 1, characterized in that: A rectangular sealing groove (12) is provided on the surface of the piston sealing ring (8), and the rectangular sealing groove (12) is tightly fitted to the connecting piece (2).

4. The scraper cylinder sealing structure for exhaust gas treatment equipment according to claim 1, characterized in that: A dustproof sealing ring (11) is provided on the inner wall of the bottom of the connecting piece (2), and the dustproof sealing ring (11) is assembled with the piston rod (3).

5. The scraper cylinder sealing structure for exhaust gas treatment equipment according to claim 4, characterized in that: A circular arc sealing groove (13) is provided on the surface of the dustproof sealing ring (11), and the circular arc sealing groove (13) is tightly fitted to the connecting piece (2).

6. The scraper cylinder sealing structure for exhaust gas treatment equipment according to claim 1, characterized in that: A cavity (4) is provided inside the cylinder body (1), a piston member (5) is provided at the top end of the piston rod (3), and the piston member (5) is slidably assembled in the cavity (4).

7. The scraper cylinder sealing structure for exhaust gas treatment equipment according to claim 1, characterized in that: The inner wall of the connecting piece (2) is provided with a connecting thread (10), and the connecting piece (2) is screwed and connected to the cylinder body (1) via the connecting thread (10).

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