Graphite pad fixing device convenient to mount and dismount

Abstract

The utility model relates to the technical field of graphite pad fixing, in particular to a graphite pad fixing device convenient to assemble and disassemble, which comprises a connecting screw rod, a connecting nut is screwed on the outer side of the connecting screw rod, a fixing mechanism is arranged between the connecting screw rod and the connecting nut, and the fixing mechanism comprises a first welding cylinder. A groove is formed in one side of the first welding cylinder, a baffle is fixedly installed in the groove, a magnetic attraction piece is arranged on the side, close to the baffle, in the groove, magnetic attraction rings are installed on the magnetic attraction piece in a magnetic attraction mode, and a graphite pad is fixedly installed between the magnetic attraction rings. According to the utility model, the graphite pad is quickly pre-fixed through the adsorption of the magnetic sheet and the magnetic ring and the precise limiting of the baffle plate, and the graphite pad is ensured to be uniformly pressed and deformed and the connection stability under high-frequency vibration by combining a double-locking structure of the insertion of the clamping cylinder and the mechanical clamping of the baffle block; the problems that a traditional bolt structure is complex to disassemble and assemble, uneven in sealing and prone to loosening are effectively solved, and the installation efficiency and the vibration resistance are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of graphite pad fixing technology, specifically a graphite pad fixing device that is easy to install and disassemble. Background Technology

[0002] In the field of industrial sealing, graphite gaskets are widely used for sealing connections in pipe flanges, valves, and reaction equipment due to their high temperature resistance, corrosion resistance, and excellent elastic deformation properties. Currently, conventional graphite gasket fixing methods are mostly based on flange bolt structures. Compressive force is applied through symmetrically distributed bolt groups, causing the graphite gasket to deform uniformly and fill the gaps in the sealing surface. This type of structure has undergone long-term engineering verification and has formed a mature standardized design system, capable of adapting to sealing requirements under medium and low pressure conditions. The sealing pressure can be adjusted within a certain range by adjusting the bolt preload. In recent years, as industrial equipment has expanded into high-frequency maintenance, high-pressure, high-temperature, and dynamic load scenarios, higher requirements have been placed on the rapid assembly and disassembly efficiency, vibration resistance, and long-term stability of sealing structures. This has prompted related technical fields to explore innovative solutions that balance operational convenience and reliability.

[0003] However, existing graphite gasket fixing devices that are easy to install and remove require the complete loosening of multiple bolts and separation of the flange assembly when disassembling and replacing the graphite gasket. The operation steps are cumbersome and it is difficult to ensure that the sealing surface is evenly stressed after repeated installation. This can easily lead to leakage due to insufficient local tightening force. In addition, bolted connections are prone to loosening under long-term vibration or temperature cycling, requiring frequent re-tightening to maintain the seal. This makes it difficult to meet the stability requirements of high-frequency testing or dynamic load scenarios. Utility Model Content

[0004] The purpose of this invention is to provide a graphite pad fixing device that is easy to install and disassemble, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A graphite pad fixing device that is easy to install and disassemble includes a connecting screw, a connecting nut being screwed onto the outer side of the connecting screw, a fixing mechanism being provided between the connecting screw and the connecting nut, the fixing mechanism including a first welding cylinder, a groove being formed on one side of the first welding cylinder, a baffle being fixedly installed in the groove, a magnetic absorbing piece being provided in the groove near the baffle, a magnetic absorbing ring being magnetically installed on the magnetic absorbing piece, and a graphite pad being fixedly installed between the magnetic absorbing rings.

[0007] Preferably, the fixing mechanism further includes a first connecting plate, which is fixedly installed on the side of the first welding cylinder near the groove.

[0008] Preferably, the first connecting plate is movably mounted on one side of the second connecting plate, and the first connecting plate has a first connecting hole.

[0009] Preferably, the second connecting plate has a second connecting hole, and a connecting screw is movably installed in the second connecting hole and the first connecting hole.

[0010] Preferably, a second welding cylinder is fixedly installed in the middle of the second connecting plate, and a clamping sleeve is fixedly installed on the side of the second welding cylinder near the second connecting plate.

[0011] Preferably, a stop block is fixedly installed in the middle of the clamping cylinder, the clamping cylinder is movably installed in the groove, and the stop block is engaged in the first welding cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This graphite pad fixing device, which is easy to install and disassemble, uses the magnetic adsorption of magnetic plates and magnetic rings in conjunction with the baffle for precise positioning, to achieve rapid pre-fixation of the graphite pad and automatic alignment of the sealing surface. Compared with the cumbersome operation of traditional bolt tightening that requires repeated manual adjustment, it significantly shortens the installation time and reduces the assembly difficulty. At the same time, the graphite pad is compressed and deformed evenly to ensure high sealing performance.

[0014] 2. This graphite pad fixing device, which is easy to install and disassemble, forms a double anti-vibration structure after the connecting plate is clamped by the insertion and limiting of the clamping sleeve and the groove and the limiting block. Compared with the defects of traditional single bolt clamping which is easily loosened by vibration, it effectively improves the stability of pipeline connection in high-frequency test environment and avoids leakage risk. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the separation structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the first connecting disc of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the second connecting disc of this utility model.

[0019] In the diagram: 101, connecting screw; 102, connecting nut; 103, fixing mechanism; 104, first welding cylinder; 105, groove; 106, baffle; 201, magnetic plate; 202, magnetic ring; 203, graphite pad; 204, first connecting plate; 205, second connecting plate; 206, first connecting hole; 301, second connecting hole; 302, second welding cylinder; 303, clamping sleeve; 304, stop block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 As shown, this utility model provides a technical solution:

[0022] A graphite pad fixing device that is easy to install and disassemble includes a connecting screw 101, a connecting nut 102 screwed onto the outer side of the connecting screw 101, a fixing mechanism 103 provided between the connecting screw 101 and the connecting nut 102, the fixing mechanism 103 including a first welding cylinder 104, a groove 105 formed on one side of the first welding cylinder 104, a baffle 106 fixedly installed in the groove 105, a magnetic absorbing piece 201 provided in the groove 105 near the baffle 106, a magnetic absorbing ring 202 magnetically attached to the magnetic absorbing piece 201, and a graphite pad 203 fixedly installed between the magnetic absorbing rings 202.

[0023] The above scheme achieves the clamping force adjustment at the connection point through the threaded engagement of the connecting screw and the connecting nut. The fixing mechanism forms a limiting space through the groove of the first welding cylinder and the baffle. The magnetic adsorption of the magnetic plate and the magnetic ring achieves the rapid pre-fixation of the graphite pad. Finally, the elastic deformation of the graphite pad achieves the sealing effect.

[0024] In this embodiment, preferably, the fixing mechanism 103 further includes a first connecting plate 204, which is fixedly installed on the side of the first welding cylinder 104 near the groove 105.

[0025] The above solution uses a first connecting plate fixed to the side of the groove of the first welding cylinder to achieve an integrated structure between the welding cylinder and the connecting plate, providing a stable mounting base for subsequent docking.

[0026] In this embodiment, preferably, the first connecting plate 204 is movably mounted on one side of the second connecting plate 205, and the first connecting plate 204 has a first connecting hole 206.

[0027] The above scheme, through the movable installation of the first and second connecting plates and the opening design of the first connecting hole, enables the rapid alignment and temporary positioning of the two connecting plates.

[0028] In this embodiment, preferably, a second connecting hole 301 is provided on the second connecting plate 205, and a connecting screw 101 is movably installed in the second connecting hole 301 and the first connecting hole 206.

[0029] The above method involves using a connecting screw that passes through the first and second connecting holes, and tightening the connecting nut to press and fix the two connecting discs together, ensuring that the sealing surfaces are subjected to uniform force.

[0030] In this embodiment, preferably, a second welding cylinder 302 is fixedly installed in the middle of the second connecting plate 205, and a clamping cylinder 303 is fixedly installed on the side of the second welding cylinder 302 near the second connecting plate 205.

[0031] Through the above scheme, the fixed connection between the second welding cylinder and the clamping cylinder allows the clamping cylinder to be inserted into the groove of the first welding cylinder during docking, thus forming an axial guiding and radial limiting function.

[0032] In this embodiment, preferably, a stop block 304 is fixedly installed in the middle of the clamping cylinder 303, the clamping cylinder 303 is movably installed in the groove 105, and the stop block 304 is engaged in the first welding cylinder 104.

[0033] With the above solution, by setting the middle stop of the clamping cylinder, after the clamping cylinder is inserted into the groove, the stop and the inner wall of the first welding cylinder are mechanically engaged, preventing the connecting plate from being displaced by vibration or pressure impact.

[0034] In this embodiment, a graphite pad 203 fixing device that is easy to install and disassemble is used. First, the user can weld the pipes to the first welding cylinder 104 and the second welding cylinder 302 respectively. After welding, the magnetic ring 202, along with the graphite pad 203, is connected to the groove 105. During connection, the baffle 106 limits the connection so that the magnetic ring 202, along with the graphite pad 203, can be accurately connected in the groove 105. At the same time, the magnetic plate 201 and the magnetic ring 202 generate magnetic attraction, so that the magnetic ring 202, along with the graphite pad 203, remains stable after being connected in the groove 105 (the magnetic plate 201 is made of a magnetically conductive alloy, and the magnetic ring 202 is a samarium cobalt permanent magnet with a temperature resistance of ≥300°C, which meets the conventional selection of industrial seals). Then, the first connecting plate 204 and the second connecting plate 205 are docked so that the clamping sleeve 303 is connected in the groove 105. During connection, the baffle 106 limits the connection so that the magnetic ring 202, along with the graphite pad 203, can be accurately connected in the groove 105. Block 304 is embedded in the side wall of the first welding cylinder 104 to achieve axial positioning. After the connection is completed, the user connects and tightens the connecting nut 102 through the connecting screw 101 through the first connecting hole 206 and the second connecting hole 301, so that the connection is clamped. When clamped, the graphite pad 203 is squeezed to ensure the sealing of the mating connection. When fixing the graphite pad 203, the gap formed by the baffle 106 in the groove 105 allows the graphite pad 203 to be quickly assembled. Combined with magnetic adsorption, the graphite pad 203 remains stable after assembly, and the magnetic adsorption allows the graphite pad 203 to be quickly disassembled for easy replacement. At the same time, when the device is connected, the connection and positioning of the baffle 304 and the side wall of the first welding cylinder 104, combined with the clamp 303 connected in the groove 105, further enhances the stability of the connection.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A graphite pad fixing device that is easy to install and disassemble, characterized in that: The device includes a connecting screw (101), on which a connecting nut (102) is screwed and mounted. A fixing mechanism (103) is provided between the connecting screw (101) and the connecting nut (102). The fixing mechanism (103) includes a first welding cylinder (104). A groove (105) is provided on one side of the first welding cylinder (104). A baffle (106) is fixedly installed in the groove (105). A magnetic absorbing piece (201) is provided in the groove (105) near the baffle (106). A magnetic absorbing ring (202) is magnetically installed on the magnetic absorbing piece (201). A graphite pad (203) is fixedly installed between the magnetic absorbing rings (202).

2. The graphite pad fixing device for easy installation and disassembly according to claim 1, characterized in that: The fixing mechanism (103) further includes a first connecting plate (204), which is fixedly installed on the side of the first welding cylinder (104) near the groove (105).

3. The graphite pad fixing device for easy installation and disassembly according to claim 2, characterized in that: The first connecting plate (204) is movably mounted on one side of the second connecting plate (205), and the first connecting plate (204) has a first connecting hole (206).

4. The graphite pad fixing device for easy installation and disassembly according to claim 3, characterized in that: The second connecting plate (205) has a second connecting hole (301), and a connecting screw (101) is movably installed in the second connecting hole (301) and the first connecting hole (206).

5. A graphite pad fixing device for easy installation and disassembly according to claim 4, characterized in that: A second welding cylinder (302) is fixedly installed in the middle of the second connecting plate (205), and a clamping cylinder (303) is fixedly installed on the side of the second welding cylinder (302) near the second connecting plate (205).

6. A graphite pad fixing device for easy installation and disassembly according to claim 5, characterized in that: A stop block (304) is fixedly installed in the middle of the clamping cylinder (303), the clamping cylinder (303) is movably installed in the groove (105), and the stop block (304) is engaged in the first welding cylinder (104).

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