Closed type sandwich valve

Abstract

The invention discloses a closed sandwich valve, which belongs to the field of valves and comprises a central clamping plate, a first side clamping plate and a second side clamping plate are respectively arranged on two side surfaces of the central clamping plate, and an inlet pipe and an outlet pipe which are communicated with the central clamping plate and correspond to each other are respectively arranged on the first side clamping plate and the second side clamping plate. A valve element mechanism is arranged on the central clamping plate through a driving assembly, the valve element mechanism comprises a valve plate assembly with a compensation function, the valve plate assembly is connected with the output end of the driving assembly through a positioning plate on a connecting rod, and the valve element mechanism comprises a core plate connected with the connecting rod; and a base plate is arranged on the core plate through a detachable mounting plate. According to the automatic closing type sandwich valve for flow direction switching, the sealing ring on the core plate can properly deform when the temperature changes, so that the sealing ring is tightly attached to the valve plate, gaps generated due to thermal expansion and cold contraction are reduced, and the sealing performance of the sandwich valve is improved.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a closed clamping valve. Background Art

[0002] The clamp valve is composed of valve body, clamp, valve seat and valve stem. When the flow direction needs to be switched, the valve stem rotates or moves up and down to change the relative position between the clamp and the valve seat, thereby changing the fluid channel. It is widely used in pipelines in coal chemical industry, petrochemical industry, rubber, papermaking, pharmaceutical industry, etc. as a medium diversion and confluence or flow direction switching device.

[0003] When the splint valve is in use, the sealing ring on the valve plate plays a sealing role, and the valve plate moves in the valve seat under the drive of the driving mechanism. With the long-term use of the splint valve, the sealing ring on the valve plate will be worn. Since the sealing ring on the current splint valve is inconvenient to disassemble and assemble, it takes more time and effort during the maintenance process, which increases the maintenance cost. In addition, the sealing ring will deform due to temperature reasons, resulting in a gap between the sealing ring and the pipe mouth, affecting the sealing of the splint valve. Summary of the invention

[0004] The purpose of the present invention is to propose a closed clamp valve in order to solve the problem that the sealing ring on the valve plate of the existing clamp valve is difficult to replace, resulting in a gap between the sealing ring and the pipe mouth, affecting the sealing performance of the clamp valve.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technology: a closed clamping plate valve, comprising a central clamping plate, the two sides of the central clamping plate are respectively provided with a first side clamping plate and a second side clamping plate, the first side clamping plate and the second side clamping plate are respectively provided with an inlet pipe and an outlet pipe connected to the central clamping plate and corresponding to each other, and a valve core mechanism is provided on the central clamping plate through a driving component;

[0006] The valve core mechanism comprises a valve plate assembly with a compensation function, and the valve plate assembly is connected to the output end of the driving assembly through a positioning plate on the connecting rod.

[0007] As a further description of the above technical solution: the valve plate assembly includes a core plate connected to a connecting rod, a gasket is provided on the core plate via a detachable mounting plate, and a sealing ring matching with an inlet pipe and an outlet pipe is provided on the gasket.

[0008] As a further description of the above technical solution: a limit block is arranged on the mounting plate through the mounting groove, and a spring is arranged between the limit block and the inner wall of the mounting groove;

[0009] The core plate is provided with a limiting hole matched with the limiting block.

[0010] As a further description of the above technical solution: a notch communicating with the mounting groove is provided on the mounting plate, and a protrusion located in the notch is provided on the limiting block.

[0011] As a further description of the above technical solution: a buffer groove matching with the pad is formed in the middle of the mounting plate, and a plurality of elastic members located in the buffer groove are arranged on the pad.

[0012] As a further description of the above technical solution: a plug is provided on the mounting plate at a top corner thereof, and a positioning hole matching the plug is provided on the core plate.

[0013] As a further description of the above technical solution: a slide rail is arranged on the core plate, and a slide groove matching with the slide rail is opened on the inner wall of the central clamping plate.

[0014] As a further description of the above technical solution: the driving assembly includes a hydraulic cylinder arranged on the central clamping plate through a mounting member, and the output end of the hydraulic cylinder is detachably connected to the positioning plate through a connecting plate.

[0015] As a further description of the above technical solution: the mounting member includes a fixing seat and a clamping seat which cooperate with each other to form a clamp structure, and the fixing seat and the clamping seat are connected by connecting bolts.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] 1. The sealing ring can be easily disassembled, which makes regular maintenance and overhaul of the valve easier. The staff can easily remove the sealing ring for inspection, cleaning or replacement, thereby ensuring the normal operation and sealing performance of the valve, and reducing the need for overall replacement of the valve due to damage to the sealing ring. This not only reduces maintenance costs, but also reduces downtime and production losses caused by replacing the entire valve;

[0018] 2. The sealing ring has a compensation function through the elastic part. It can deform appropriately when the temperature changes, so as to fit the valve plate tightly and reduce the gap caused by thermal expansion and contraction. The elastic sealing ring can continue to maintain its sealing performance during long-term use and is not easy to fail due to aging or wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It shows a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0020] Figure 2 It shows an explosion schematic diagram provided according to an embodiment of the present invention;

[0021] Figure 3 A partial schematic diagram provided according to an embodiment of the present invention is shown. Figure 1 ;

[0022] Figure 4 A partial schematic diagram provided according to an embodiment of the present invention is shown. Figure 2 ;

[0023] Figure 5 A schematic structural diagram of a valve core mechanism according to an embodiment of the present invention is shown;

[0024] Figure 6 A schematic structural diagram of a valve plate assembly according to an embodiment of the present invention is shown;

[0025] Figure 7 A partial enlarged schematic diagram of a mounting plate provided according to an embodiment of the present invention is shown;

[0026] Figure 8 It shows a schematic structural diagram of a pad provided according to an embodiment of the present invention;

[0027] Fig. 9 A schematic structural diagram of an elastic member provided according to an embodiment of the present invention is shown;

[0028] Fig.10 A schematic diagram showing the structure of a drive assembly according to an embodiment of the present invention is shown.

[0029] Fig.11 A schematic structural diagram of a mounting component provided according to an embodiment of the present invention is shown.

[0030] Legend:

[0031] 1. Central clamping plate; 11. Slide groove; 2. First side clamping plate; 3. Second side clamping plate; 4. Inlet pipe; 5. Outlet pipe; 6. Drive assembly; 61. Hydraulic cylinder; 62. Mounting piece; 621. Fixing seat; 622. Clamping seat; 623. Connecting bolt; 63. Connecting plate; 7. Valve core mechanism; 71. Valve plate assembly; 711. Core plate; 712. Mounting plate; 7121. Mounting groove; 7122. Limiting block; 7123. Spring; 7124. Notch; 7125. Bump; 713. Pad; 7131. Elastic piece; 714. Sealing ring; 715. Plug; 716. Limiting hole; 717. Slide rail; 72. Connecting rod; 73. Positioning plate. DETAILED DESCRIPTION

[0032] 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.

[0033] Reference Figure 1-Figure 10 A closed clamp valve provided in this embodiment includes a central clamp plate 1, and a first side clamp plate 2 and a second side clamp plate 3 are respectively arranged on both sides of the central clamp plate 1. An inlet pipe 4 and an outlet pipe 5 which are connected to the central clamp plate 1 and correspond to each other are respectively arranged on the first side clamp plate 2 and the second side clamp plate 3. A valve core mechanism 7 is arranged on the central clamp plate 1 through a driving component 6. The valve core mechanism 7 includes a valve plate component 71 with a compensation function. The valve plate component 71 is connected to the output end of the driving component 6 through a positioning plate 73 on a connecting rod 72.

[0034] In the present invention, the inlet pipe 4 on the first side clamp plate 2 is connected to the input end of the pipeline system, and the outlet pipe 5 on the second side clamp plate 3 is connected to the output end of the pipeline system. The number and position of the inlet pipe 4 and the outlet pipe 5 are both two and correspond one to one. During the use of the clamp valve, the drive assembly 6 drives the positioning plate 73 to move, and the positioning plate 73 drives the valve plate assembly 71 to move through the connecting rod 72. When the valve plate assembly 71 moves to the leftmost side, the valve plate assembly 71 is located between the inlet pipe 4 and the outlet pipe 5 on the left, and the inlet pipe 4 and the outlet pipe 5 on the right are connected. When the drive assembly 6 drives the valve plate assembly 71 to move to the rightmost side, the valve plate assembly 71 is located between the inlet pipe 4 and the outlet pipe 5 on the right, and the inlet pipe 4 and the outlet pipe 5 on the left are connected, thereby realizing the switching of flow direction.

[0035] Specifically, Figure 3-Figure 6 As shown, the valve plate assembly 71 includes a core plate 711 connected to a connecting rod 72, a gasket 713 is provided on the core plate 711 via a detachable mounting plate 712, a sealing ring 714 matching with the inlet pipe 4 and the outlet pipe 5 is provided on the gasket 713, a slide rail 717 is provided on the core plate 711, and a slide groove 11 matching with the slide rail 717 is provided on the inner wall of the central clamping plate 1.

[0036] Among them, when the valve plate assembly 71 is moved by using the driving assembly 6, the core plate 711 realizes the precise and stable movement of the valve plate assembly 71 in the central clamping plate 1 through the cooperation between the slide groove 11 and the slide rail 717. When the core plate 711 moves, the pad 713 installed on the core plate 711 through the mounting plate 712 moves accordingly, thereby driving the sealing ring 714 on the pad 713 to cooperate with the inlet pipe 4 and the outlet pipe 5, thereby realizing the management of on-off and flow direction switching.

[0037] Specifically, Figure 5-Figure 7As shown, a limiting block 7122 is arranged on the mounting plate 712 through the mounting groove 7121, a spring 7123 is arranged between the limiting block 7122 and the inner wall of the mounting groove 7121, a limiting hole 716 matching with the limiting block 7122 is opened on the core plate 711, a slot 7124 connected with the mounting groove 7121 is opened on the mounting plate 712, and a protrusion 7125 located in the slot 7124 is arranged on the limiting block 7122.

[0038] Among them, the valve plate assembly 71 moves in the valve seat under the drive of the drive assembly 6. With the long-term use of the clamp valve, the sealing ring 714 on the gasket 713 will be worn. In order to ensure the sealing performance of the sealing ring 714, it is necessary to regularly inspect and replace the sealing ring 714. When inspecting and replacing the sealing ring 714, the protrusion 7125 in the groove 7124 is used to move the limit block 7122, so that the limit block 7122 compresses the spring 7123 and then shrinks in the installation groove 7121. At this time, the limit block 7122 is separated from the limit hole 716 of the core plate 711, and then the installation plate 712 together with the sealing ring 714 on the gasket 713 can be removed from the core plate 711, thereby reducing the need for overall replacement of the valve due to damage to the sealing ring 714. This not only reduces maintenance costs, but also reduces downtime and production losses caused by replacing the entire valve.

[0039] It should be noted that a plug 715 is provided at the top corner of the mounting plate 712, and a positioning hole matching the plug 715 is opened on the core plate 711. The plug 715 and the positioning hole are used to achieve positioning and guiding. After the sealing ring 714 is replaced and repaired, when the mounting plate 712 is installed on the core plate 711, the plug 715 is first aligned with the positioning hole to achieve guidance, ensuring that the mounting plate 712 can be accurately connected to the core plate 711. At the same time, the plug 715 can achieve stress dispersion, and when the sealing ring 714 is used, it can avoid damage to the core plate 711 caused by stress concentration.

[0040] Specifically, Figure 6 , Figure 8 and Fig. 9 As shown, a buffer groove matched with the pad 713 is formed in the middle of the mounting plate 712 , and a plurality of elastic members 7131 located in the buffer groove are arranged on the pad 713 .

[0041] The sealing ring 714 has a compensation function through the elastic member 7131. It can be deformed appropriately when the temperature changes, so as to fit the valve plate tightly and reduce the gap caused by thermal expansion and contraction. The sealing ring 714 can continue to maintain its sealing performance during long-term use and is not easy to fail due to aging or wear.

[0042] It should be noted that the elastic member 7131 is a micro spring, which is in a plurality and arranged in a circular array at the bottom of the pad 713 , thereby ensuring that the sealing ring 714 on the pad 713 can always fit tightly with the inlet pipe 4 and the outlet pipe 5 .

[0043] Specifically, Figure 3 , Figure 4 , Fig.10 and Fig.11 As shown, the driving assembly 6 includes a hydraulic cylinder 61 arranged on the central clamping plate 1 through a mounting member 62, the output end of the hydraulic cylinder 61 is detachably connected to the positioning plate 73 through a connecting plate 63, and the mounting member 62 includes a fixing seat 621 and a clamping seat 622 that cooperate with each other to form a clamp structure, and the fixing seat 621 and the clamping seat 622 are connected by a connecting bolt 623.

[0044] When the valve plate assembly 71 needs to be moved to realize the on / off of the valve or the switching of the flow direction, the hydraulic cylinder 61 on the mounting member 62 is started, thereby driving the valve plate assembly 71 to move, and the output end of the hydraulic cylinder 61 is detachably connected to the positioning plate 73 through the connecting plate 63, so that the driving assembly 6 and the valve core mechanism 7 can be separated conveniently for maintenance;

[0045] The fixing seat 621 and the clamping seat 622 of the mounting member 62 are connected by connecting bolts 623, which can facilitate the disassembly of the hydraulic cylinder 61, and then facilitate the maintenance and repair of the hydraulic cylinder 61, ensuring that the hydraulic cylinder 61 can accurately drive and move the valve plate assembly 71.

[0046] 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 according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A closed clamp valve, characterized in that: The invention comprises a central clamping plate (1), wherein two side surfaces of the central clamping plate (1) are respectively provided with a first side clamping plate (2) and a second side clamping plate (3), wherein the first side clamping plate (2) and the second side clamping plate (3) are respectively provided with an inlet pipe (4) and an outlet pipe (5) which are connected to the central clamping plate (1) and correspond to each other, and the central clamping plate (1) is provided with a valve core mechanism (7) via a driving component (6); The valve core mechanism (7) comprises a valve plate assembly (71) having a compensation function, and the valve plate assembly (71) is connected to the output end of the drive assembly (6) via a positioning plate (73) on a connecting rod (72).

2. A closed clamp valve according to claim 1, characterized in that: The valve plate assembly (71) includes a core plate (711) connected to a connecting rod (72), a gasket (713) being arranged on the core plate (711) via a detachable mounting plate (712), and a sealing ring (714) matching with an inlet pipe (4) and an outlet pipe (5) being arranged on the gasket (713).

3. A closed clamp valve according to claim 2, characterized in that: A limit block (7122) is provided on the mounting plate (712) through the mounting groove (7121), and a spring (7123) is provided between the limit block (7122) and the inner wall of the mounting groove (7121); The core plate (711) is provided with a limiting hole (716) that matches the limiting block (7122).

4. A closed clamp valve according to claim 3, characterized in that: The mounting plate (712) is provided with a notch (7124) which is in communication with the mounting groove (7121), and the limiting block (7122) is provided with a protrusion (7125) which is located in the notch (7124).

5. A closed clamp valve according to claim 4, characterized in that: A buffer groove matching with the pad (713) is formed in a recessed manner in the middle of the mounting plate (712), and the pad (713) is provided with a plurality of elastic members (7131) located in the buffer groove.

6. A closed clamp valve according to claim 5, characterized in that: A plug (715) is provided on the mounting plate (712) at a top corner thereof, and a positioning hole matching the plug (715) is provided on the core plate (711).

7. A closed clamp valve according to claim 2, characterized in that: The core plate (711) is provided with a slide rail (717), and the inner wall of the central clamping plate (1) is provided with a slide groove (11) that matches the slide rail (717).

8. A closed type clamp valve according to claim 1, characterized in that: The driving assembly (6) comprises a hydraulic cylinder (61) arranged on the central clamping plate (1) via a mounting member (62), and an output end of the hydraulic cylinder (61) is detachably connected to a positioning plate (73) via a connecting plate (63).

9. A closed clamp valve according to claim 8, characterized in that: The mounting member (62) comprises a fixing seat (621) and a clamping seat (622) which cooperate with each other to form a clamp structure, and the fixing seat (621) and the clamping seat (622) are connected via a connecting bolt (623).

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