A pneumatic pipe clamp valve with wear-resistant structure and flow regulation function

Abstract

The present invention relates to the technical field of pipe clamp valves, specifically to a pneumatic pipe clamp valve with a wear-resistant structure and a flow regulating function, wherein the wear-resistant pipe fitting is located between a feed channel and a discharge channel and presents an arc-shaped structure that facilitates smooth transition of materials, and the actuator includes an upper clamp located at both ends of a chamber and located on the upper end surface of the wear-resistant pipe fitting, a lower clamp matched with the upper clamp located on the lower end surface of the wear-resistant pipe fitting, and a driving mechanism that drives the upper clamp and the lower clamp to move relative to each other to press the wear-resistant pipe fitting together to close the flow of materials. The wear-resistant pipe fitting between the feed channel and the discharge channel is arranged into an arc-shaped smooth transition section, and a height difference is arranged at a position to facilitate the flow of materials, and a two-stage closure is formed by a pneumatic actuator, so that the sealing effect is better. The instructions are transmitted to the pneumatic actuator through the SQX series of intelligent online adjustment and control instruments, and the air volume of the pneumatic actuator is controlled, thereby controlling the opening and closing size of the pipe clamp valve, thereby playing a role in online flow regulation.

Description

Technical Field

[0001] The invention relates to the technical field of pipe clamp valves, in particular to a pneumatic pipe clamp valve with a wear-resistant structure and a flow regulating function. Background Art

[0002] The pipe clamp valve is a device used to control the direction, pressure and flow of the fluid in the fluid system. It is a control component in the pipeline fluid delivery system. It changes the size of its flow channel area by squeezing and loosening the lining of the upper and lower clamps inside the valve shell to control the opening and closing of the valve. The pipe clamp valve is generally used in the transportation of slurry, etc. Therefore, when the pipe clamp valve is opened and closed, the shape of the flow channel formed by the lining after being squeezed is directly related to the shape of its wear. Therefore, the pipe clamp valve has the functions of diverting, cutting off, throttling and unloading the flow, but does not have the regulation function. These situations are not handled in the opening and closing process during the use and production of the pipe clamp valve. Therefore, traditional pipe clamp valves generally have the defects of non-wear-resistant linings, inability to play the role of online flow regulation and short service life. Summary of the invention

[0003] The object of the present invention is to provide a pneumatic pipe clamp valve with a wear-resistant structure and a flow regulating function, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A pneumatic tube clamp valve with a wear-resistant structure and a flow regulating function comprises a tube clamp valve body and a wear-resistant tube fitting located in the tube clamp valve body, the tube clamp valve body is provided with a feed channel, a discharge channel and a chamber located between the feed channel and the discharge channel for accommodating an actuator to open and close the wear-resistant tube fitting, the position of the feed channel is higher than the position of the discharge channel, the wear-resistant tube fitting is located between the feed channel and the discharge channel and has an arc-shaped structure that facilitates a smooth transition of materials, the actuator comprises an upper clamp plate located at both ends of the chamber and located on the upper end face of the wear-resistant tube fitting, a lower clamp plate matched with the upper clamp plate and located on the lower end face of the wear-resistant tube fitting, and a driving mechanism that drives the upper clamp plate and the lower clamp plate to move relative to each other to press the wear-resistant tube fitting together to close the flow of materials.

[0006] Preferably, the driving mechanism includes an inverted U-shaped cylinder body installed on the inner wall of the chamber and located above the wear-resistant pipe fitting, a pressure rod whose lower end is connected to the upper end of the upper clamp plate is inserted through the vertical cavity of the inverted U-shaped cylinder body, the upper end of the pressure rod is connected to a block piston that performs piston movement in the vertical cavity of the inverted U-shaped cylinder body, the upper end of the block piston is connected to an upper driving rod that pushes the block piston downward, the upper ends of the two upper driving rods are connected to the same pressure plate piston located in the transverse cavity of the inverted U-shaped cylinder body, a pneumatic actuator is installed on the upper end surface of the tube clamp valve body, the pneumatic actuator is equipped with an SQX series intelligent online adjustment and control instrument, and the pneumatic actuator is connected to the inverted U-shaped cylinder body through a connecting channel that passes through the top wall of the tube clamp valve body and the top wall of the inverted U-shaped cylinder body.

[0007] Preferably, a plurality of springs are connected to the lower end of the pressure plate piston, and the lower ends of the springs are connected to the bottom wall of the transverse cavity of the inverted U-shaped cylinder body.

[0008] Preferably, the driving mechanism further comprises a lifting mechanism for lifting the lower clamping plate when the upper clamping plate is pressed down.

[0009] Preferably, the lifting mechanism includes a gear rotatably connected in the chamber and located on both sides of the wear-resistant pipe fitting, the side of the gear close to the wear-resistant pipe fitting is meshed with an upper spur rack whose upper end is connected to the lower end of the upper clamping plate, and the side of the gear away from the wear-resistant pipe fitting is meshed with a lower spur rack whose lower end is connected to the upper end of the lower clamping plate.

[0010] Preferably, an upper through hole for the lower spur rack to pass through is formed on the upper clamping plate, and a lower through hole for the upper spur rack to pass through is formed on the lower clamping plate.

[0011] Preferably, the lower end of the lower clamping plate is symmetrically connected to a lifting rod, the lower end of which is connected to the bottom wall of the chamber for supporting function.

[0012] Preferably, a convex portion is integrally connected to the lower end of the upper clamping plate, and the thickness of the convex portion is the same as the outer diameter of the gear.

[0013] Preferably, the pipe clamp valve body is a detachable structure formed by two front-to-back symmetrical shells fixed by bolts.

[0014] Preferably, the method for preparing the wear-resistant pipe fitting comprises the following steps:

[0015] S1. Mix and compound 85-100 parts of polyurethane rubber, 8-12 parts of EPDM rubber, 1-3 parts of sulfur, 28-40 parts of high wear-resistant carbon black with a particle size of 20-30 nm, 2-4 parts of stearic acid, 0.5-1.5 parts of accelerator M, 0.8-1.5 parts of zinc oxide, 0.2-0.6 parts of hexanediol, and 0-2 parts of chitosan;

[0016] S2. Then, two vulcanization molding treatments are carried out. The first vulcanization treatment has a vulcanization temperature of 130-145°C, a vulcanization time of 25-35min, and a vulcanization pressure of 12-15MPa; the second vulcanization treatment has a vulcanization temperature of 175-190°C, a vulcanization time of 2-4h, and a vulcanization pressure of 12-15Mpa.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the wear-resistant pipe fittings between the feed channel and the discharge channel are arranged into a circular arc-shaped smooth transition section, and the height difference of the position is arranged to facilitate the flow of materials. The upper clamping plate and the lower clamping plate are arranged on both sides of the circular arc-shaped smooth transition section of the wear-resistant pipe fittings, and two sections of closure are formed by the pneumatic actuator, so that the sealing effect is better. The air volume is adjusted by the pneumatic actuator to push the pressure plate piston downward, thereby pushing the upper driving rod to act on the block piston, thereby pushing the pressure plate piston downward. The rod drives the upper clamping plate to move downward, and by adding gears, the gears mesh with the upper spur rack. The upper spur rack follows the upper clamping plate to move downward, driving the gear to rotate. The lower spur rack meshes with the gears, and the gears rotate, driving the lower spur rack to rise, driving the lower clamping plate to rise, and the lower clamping plate moves toward the upper clamping plate to clamp the wear-resistant pipe fittings. The instructions are transmitted to the pneumatic actuator through the SQX series intelligent online adjustment and control instrument, and the air volume of the pneumatic actuator is controlled, thereby controlling the opening and closing size of the pipe clamp valve, thereby playing a role in online flow regulation, which has outstanding substantial characteristics and significant progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a side view structural schematic diagram of the present invention;

[0020] Figure 3 It is a schematic diagram of the enlarged structure of part A of the present invention.

[0021] In the figure: the pipe clamp valve body 1, the feed channel 11, the discharge channel 12, the wear-resistant pipe fittings 2, the inverted U-shaped cylinder body 3, the pressure plate piston 31, the upper drive rod 32, the block piston 33, the pressure rod 34, the spring 35, the upper clamping plate 4, the upper spur rack 41, the upper through hole 42, the lower clamping plate 5, the lower spur rack 51, the lower through hole 52, the lifting rod 53, the pneumatic actuator 6, the connecting channel 61, and the gear 7. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-3 , the present invention provides a technical solution:

[0024] A pneumatic pipe clamp valve with a wear-resistant structure and a flow regulating function comprises a pipe clamp valve body 1 and a wear-resistant pipe fitting 2 located in the pipe clamp valve body 1. The pipe clamp valve body 1 is a detachable structure formed by two front and rear symmetrical shells fixed by bolts, which is convenient for disassembly and maintenance. The pipe clamp valve body 1 is provided with a feed channel 11, a discharge channel 12 and a chamber located between the feed channel 11 and the discharge channel 12 for accommodating an actuator to open and close the wear-resistant pipe fitting 2. The position of the feed channel 11 is higher than that of the discharge channel 12. The wear-resistant pipe fitting 2 is located between the feed channel 11 and the discharge channel 12 and has an arc-shaped structure that facilitates smooth transition of materials. The actuator comprises an upper clamp plate 4 located at both ends of the chamber and located on the upper end surface of the wear-resistant pipe fitting 2, a lower clamp plate 5 located on the lower end surface of the wear-resistant pipe fitting 2 and matching the upper clamp plate 4, and a driving mechanism for driving the upper clamp plate 4 and the lower clamp plate 5 to move relative to each other to press the wear-resistant pipe fitting 2 together to close the flow of materials.

[0025] The driving mechanism includes an inverted U-shaped cylinder 3 installed on the inner wall of the chamber and located above the wear-resistant pipe 2. A pressure rod 34 whose lower end is connected to the upper end of the upper clamp 4 is inserted through the vertical cavity of the inverted U-shaped cylinder 3. The upper end of the pressure rod 34 is connected to a block piston 33 that performs piston movement in the vertical cavity of the inverted U-shaped cylinder 3. The upper end of the block piston 33 is connected to an upper driving rod 32 that pushes the block piston 33 downward. The upper ends of the two upper driving rods 32 are connected to the pistons located in the lateral cavity of the inverted U-shaped cylinder 3. The same pressure plate piston 31, the upper end surface of the tube clamp valve body 1 is installed with a pneumatic actuator 6, and the pneumatic actuator 6 is equipped with an SQX series intelligent online adjustment and control instrument. The pneumatic actuator 6 passes through the top wall of the tube clamp valve body 1 and the top wall of the inverted U-shaped cylinder body 3 through a connecting channel 61 and is connected to the inverted U-shaped cylinder body 3. The lower end of the pressure plate piston 31 is connected to a plurality of springs 35, and the lower end of the spring 35 is connected to the bottom wall of the transverse cavity of the inverted U-shaped cylinder body 3, which facilitates the resetting of the pressure plate piston 31.

[0026] The driving mechanism also includes a lifting mechanism for lifting the lower clamping plate 5 when the upper clamping plate 4 is pressed down. The lifting mechanism includes a gear 7 which is rotatably connected in the chamber and located on both sides of the wear-resistant pipe fitting 2. The side of the gear 7 close to the wear-resistant pipe fitting 2 is meshed with an upper straight rack 41 whose upper end is connected to the lower end of the upper clamping plate 4, and the side of the gear 7 away from the wear-resistant pipe fitting 2 is meshed with a lower straight rack 51 whose lower end is connected to the upper end of the lower clamping plate 5. An upper through hole 42 is provided on the upper clamping plate 4 for the lower straight rack 51 to pass through, and a lower through hole 52 is provided on the lower clamping plate 5 for the upper straight rack 41 to pass through. The lower end of the lower clamping plate 5 is symmetrically connected to a lifting rod 53 whose lower end is connected to the bottom wall of the chamber for supporting purposes. The lower end of the upper clamping plate 4 is integrally connected with a convex portion, and the thickness of the convex portion is the same as the outer diameter of the gear 7, so as to facilitate the tight sealing of the wear-resistant pipe fitting 2.

[0027] The preparation method of the wear-resistant pipe fitting 2 comprises the following steps:

[0028] S1. Mix and compound 85-100 parts of polyurethane rubber, 8-12 parts of EPDM rubber, 1-3 parts of sulfur, 28-40 parts of high wear-resistant carbon black with a particle size of 20-30 nm, 2-4 parts of stearic acid, 0.5-1.5 parts of accelerator M, 0.8-1.5 parts of zinc oxide, 0.2-0.6 parts of hexanediol, and 0-2 parts of chitosan;

[0029] S2. Then, two vulcanization molding treatments are carried out. The vulcanization temperature of the first vulcanization treatment is 130-145°C, the vulcanization time is 25-35min, and the vulcanization pressure is 12-15MPa; the vulcanization temperature of the second vulcanization treatment is 175-190°C, the vulcanization time is 2-4h, and the vulcanization pressure is 12-15Mpa. The wear-resistant pipe fittings 2 prepared by this method further improve the cutting, tearing and wear resistance of the wear-resistant pipe fittings 2 while maintaining their own good elasticity.

[0030] The pneumatic pipe clamp valve with wear-resistant structure and flow regulating function is provided with a wear-resistant pipe fitting 2 between a feed channel 11 and a discharge channel 12, which is arranged into a circular arc-shaped smooth transition section, and a height difference is arranged at a position to facilitate the flow of materials. An upper clamping plate 4 and a lower clamping plate 5 are arranged on both sides of the circular arc-shaped smooth transition section of the wear-resistant pipe fitting 2, and a two-stage closure is formed by a pneumatic actuator 6, so that the sealing effect is better. The air volume is adjusted by the pneumatic actuator 6 to push the pressure plate piston 31 downward, thereby pushing the upper driving rod 32, acting on the block piston 33, thereby pushing the pressure rod 34 to drive the upper clamping plate 4 to move downward. By adding gear 7, gear 7 is meshed with upper spur rack 41, and upper spur rack 41 moves downward with upper clamp plate 4 to drive gear 7 to rotate, and lower spur rack 51 is meshed with gear 7, and gear 7 rotates, driving lower spur rack 51 to rise, driving lower clamp plate 5 to rise, and lower clamp plate 5 and upper clamp plate 4 move toward each other to clamp wear-resistant pipe fitting 2. The command is transmitted to the pneumatic actuator through SQX series intelligent online adjustment and control instrument, and the air volume of pneumatic actuator 6 is controlled, thereby controlling the opening and closing size of pipe clamp valve, thereby playing the role of online flow regulation, which has outstanding substantial characteristics and remarkable progress.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic pipe clamp valve with a wear-resistant structure and a flow regulating function, comprising a pipe clamp valve body (1) and a wear-resistant pipe fitting (2) located in the pipe clamp valve body (1), the pipe clamp valve body (1) being provided with a feed channel (11), a discharge channel (12) and a chamber located between the feed channel (11) and the discharge channel (12) for accommodating an actuator to open and close the wear-resistant pipe fitting (2), characterized in that: The position of the feed channel (11) is higher than that of the discharge channel (12); a section of the wear-resistant pipe (2) located between the feed channel (11) and the discharge channel (12) is an arc-shaped structure that facilitates smooth material transition; the actuator comprises an upper clamping plate (4) located at both ends of the chamber and located on the upper end surface of the wear-resistant pipe (2); a lower clamping plate (5) located on the lower end surface of the wear-resistant pipe (2) and matching the upper clamping plate (4); and a driving mechanism that drives the upper clamping plate (4) and the lower clamping plate (5) to move relative to each other to press the wear-resistant pipe (2) together to close the material flow; The driving mechanism comprises an inverted U-shaped cylinder (3) mounted on the inner wall of the chamber and located above the wear-resistant pipe (2); a pressure rod (34) whose lower end is connected to the upper end of the upper clamp (4) is inserted and inserted into the vertical cavity of the inverted U-shaped cylinder (3); the upper end of the pressure rod (34) is connected to a block piston (33) that performs piston motion in the vertical cavity of the inverted U-shaped cylinder (3); the upper end of the block piston (33) is connected to an upper driving rod (34) that pushes the block piston (33) downward. 2), the upper ends of the two upper drive rods (32) are connected to the same pressure plate piston (31) located in the transverse cavity of the inverted U-shaped cylinder body (3), the upper end surface of the pipe clamp valve body (1) is equipped with a pneumatic actuator (6), and the pneumatic actuator (6) is equipped with an SQX series intelligent online adjustment and control instrument. The pneumatic actuator (6) penetrates the top wall of the pipe clamp valve body (1) and the top wall of the inverted U-shaped cylinder body (3) through a connecting channel (61) and is connected to the inverted U-shaped cylinder body (3); The lower end of the pressure plate piston (31) is connected to a plurality of springs (35), and the lower ends of the springs (35) are connected to the bottom wall of the transverse cavity of the inverted U-shaped cylinder body (3); The driving mechanism also includes a lifting mechanism for lifting the lower clamping plate (5) when the upper clamping plate (4) is pressed down.

2. The pneumatic pipe clamp valve with a wear-resistant structure and a flow regulating function according to claim 1, characterized in that: The lifting mechanism comprises a gear (7) rotatably connected in the chamber and located on both sides of the wear-resistant pipe (2); the side of the gear (7) close to the wear-resistant pipe (2) is meshed with an upper spur rack (41) whose upper end is connected to the lower end of the upper clamp (4); the side of the gear (7) away from the wear-resistant pipe (2) is meshed with a lower spur rack (51) whose lower end is connected to the upper end of the lower clamp (5).

3. The pneumatic pipe clamp valve with a wear-resistant structure and a flow regulating function according to claim 2, characterized in that: The upper clamping plate (4) is provided with an upper through hole (42) for the lower spur rack (51) to pass through, and the lower clamping plate (5) is provided with a lower through hole (52) for the upper spur rack (41) to pass through.

4. The pneumatic pipe clamp valve with a wear-resistant structure and a flow regulating function according to claim 2, characterized in that: The lower end of the lower clamping plate (5) is symmetrically connected to a lifting rod (53) whose lower end is connected to the bottom wall of the chamber for supporting purposes.

5. The pneumatic pipe clamp valve with a wear-resistant structure and a flow regulating function according to claim 2, characterized in that: The lower end of the upper clamping plate (4) is integrally connected with a convex portion, and the thickness of the convex portion is the same as the outer diameter of the gear (7).

6. A pneumatic pipe clamp valve with a wear-resistant structure and a flow regulating function according to any one of claims 1 to 5, characterized in that: The pipe clamp valve body (1) is a detachable structure formed by two front-to-back symmetrical shells fixed by bolts.

7. The pneumatic pipe clamp valve with a wear-resistant structure and a flow regulating function according to claim 6, characterized in that: The preparation method of the wear-resistant pipe fitting (2) comprises the following steps: S1. Mix and compound 85-100 parts of polyurethane rubber, 8-12 parts of EPDM rubber, 1-3 parts of sulfur, 28-40 parts of high wear-resistant carbon black with a particle size of 20-30 nm, 2-4 parts of stearic acid, 0.5-1.5 parts of accelerator M, 0.8-1.5 parts of zinc oxide, 0.2-0.6 parts of hexanediol, and 0-2 parts of chitosan; S2. Then, two vulcanization molding treatments are carried out. The first vulcanization treatment has a vulcanization temperature of 130-145°C, a vulcanization time of 25-35min, and a vulcanization pressure of 12-15MPa; the second vulcanization treatment has a vulcanization temperature of 175-190°C, a vulcanization time of 2-4h, and a vulcanization pressure of 12-15Mpa.

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