Gate valve with leak-proof structure

Abstract

The invention relates to the field of valve design, in particular to a gate valve with an anti-leakage structure, which comprises a protective frame, one end of the protective frame is connected with a driving device, a sliding groove is formed in the protective frame, and an annular groove is formed in the protective frame; a connecting pipe penetrates through the protective frame, a through groove communicated with the protective frame is formed in the side wall of the connecting pipe, an inserting plate body matched with the sliding groove is arranged in the through groove, and a clamping groove is formed in one side of the inserting plate body; when the inserting plate body moves to the bottom end, the sealing ring can be driven to be tightly attached to the periphery of the inserting plate body in a linkage mode, sealing of gaps in the periphery of the inserting plate body can be achieved, leakage of water flow is avoided, and the situation that the water flow enters the protection frame when flowing in the connecting pipe is avoided; the problem that in the prior art, when a water gate is used, water flow on the two sides is prone to leakage, and therefore the water gate loses the water flow control effect is solved.

Description

Technical Field

[0001] The invention relates to the field of valve design, and in particular to a plug-in valve with an anti-leakage structure. Background Art

[0002] At present, the gate valve mainly includes several components such as a valve body, a valve plate, and a support track. Generally, the opening and closing of the valve is achieved by pushing the valve plate to move back and forth on the support track.

[0003] The existing pneumatic gate valve water gate has no anti-leakage mechanism, so that water leakage on both sides of the water gate is likely to occur when the water gate is in use, thereby making the water gate lose the effect of controlling the water flow.

[0004] Therefore, it is necessary to invent a gate valve with a leak-proof structure to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a gate valve with an anti-leakage structure, which can drive the sealing ring to fit tightly with the periphery of the gate body when the gate body moves to the bottom, thereby sealing the gap around the gate body, avoiding water leakage, and avoiding water from entering the interior of the protective frame when flowing in the connecting pipe, so as to solve the problem in the prior art that water gates are prone to water leakage on both sides when in use, thereby causing the water gates to lose the effect of controlling the water flow.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plug valve with an anti-leakage structure, comprising a protective frame, one end of the protective frame is connected to a driving device, a slide groove is provided in the protective frame, and an annular groove is provided in the protective frame; a connecting pipe runs through the protective frame, a through groove connected to the protective frame is provided on the side wall of the connecting pipe, a plug plate body cooperating with the slide groove is provided in the through groove, and a card slot is provided on one side of the plug plate body; linkage components cooperating with the plug plate body are symmetrically provided on both sides of the slide groove, one end of the linkage component cooperates with the card slot, and multiple linkage components are connected to a gas storage box through pipelines, and multiple pneumatic telescopic rods are provided on one side of the gas storage box, and one end of the multiple pneumatic telescopic rods is connected to a sealing ring that fits the inner side wall of the annular groove, and the sealing ring is sleeved on the outer side of the protective frame.

[0007] As a preferred solution of the present invention, the linkage component includes an air guide structure and a driven component, and two air guide structures are provided, and the two air guide structures are symmetrically arranged on both sides of the slide groove, the air guide structure is connected in the protective frame, and one end of the air guide structure is inserted in the driven component; a circular hole is opened on the inner side wall of the slide groove, and the driven component is slidably connected in the circular hole, and the other end of the driven component passes through the side wall of the protective frame and extends to the outside of the protective frame.

[0008] As a preferred solution of the present invention, the air guide structure includes an air cylinder, which is connected in a protective frame, and one end of the air cylinder is connected to the gas storage box through a pipe; the inner cavity of the air cylinder is slidably connected with an air block, one end of the air block is connected to a telescopic rod, the telescopic rod passes through the side wall of the air cylinder, one end of the telescopic rod is connected to an extension rod and a pushing block, and the extension rod is connected to the side wall of the air cylinder through a first spring; the cross-section of the pushing block is trapezoidal, and the outer side wall of the telescopic rod is sleeved with a rubber sleeve.

[0009] As a preferred solution of the present invention, the driven assembly includes a driven block, which is slidably connected in a circular hole, one end of the driven block is set as a pointed end, and an inclined through hole cooperating with the pushing block is opened at the center of the driven block. The top of the driven block is connected to the inner wall of the circular hole through a second spring, and a vertical rod is provided on one side of the driven block, and the vertical rod slides through the side wall of the protective frame and is connected to a lock.

[0010] As a preferred solution of the present invention, the lock includes a connecting plate connected to one end of the vertical rod, one side of the connecting plate is slidably connected to a connecting strip, the cross-section of the connecting strip is L-shaped, one end of the L-shaped connecting strip is connected to an end plate, one side of the end plate is connected to an electric telescopic rod, and one end of the electric telescopic rod is connected to the side wall of the protective frame.

[0011] As a preferred solution of the present invention, two horizontal strips are symmetrically arranged on the side wall of the plug board body, and one side of the two horizontal strips is connected to a trigger plate that cooperates with the extension rod.

[0012] As a preferred solution of the present invention, a limiting groove is further provided on the inner side wall of the slide groove, and the extension rod is slidably connected in the limiting groove.

[0013] As a preferred solution of the present invention, a mounting ring is provided on the outer side wall of the connecting pipe, and the mounting ring is mounted to the protective frame by bolts.

[0014] As a preferred solution of the present invention, a guide plate arranged in an annular shape is provided in the connecting pipe.

[0015] In the above technical solution, compared with the prior art, the technical effects and advantages provided by the present invention are as follows: 1. When the plug board body moves to the bottom, the sealing ring can be driven to fit closely with the periphery of the plug board body, so as to seal the gap around the plug board body, avoid water leakage, and avoid water flowing into the protective frame when flowing in the connecting pipe, thereby improving the sealing performance; 2. The guide plate guides the water flow to form a spiral flow that converges toward the center. The advantage of the vortex flow is that it can concentrate the water flow toward the center point, reduce the dispersion of the water flow during flow, avoid the water flow entering the through groove during dispersion and cause leakage, and reduce the probability of leakage; 3. The equipment is equipped with the function of adjusting the internal parts through external equipment to avoid the situation where the elastic force of the second spring is insufficient and cannot push the driven block to reset due to aging.

[0016] 4. Through the linkage relationship, the tip of the bottom end of the driven block is inserted into the slot on the plug plate body to limit the plug plate body, thereby preventing the plug plate body from loosening and causing the air pressure in the pipeline to decrease, causing the sealing ring to loosen and cause leakage, thereby improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall three-dimensional cross-sectional structure of the present invention; Figure 3 It is a schematic structural diagram of the connection relationship between the linkage assembly, the gas storage box, the pneumatic telescopic rod and the sealing ring of the present invention; Figure 4 for Figure 3 The enlarged structural diagram at A in the middle; Figure 5 The planar cross-sectional structure of the present invention is schematically shown Figure 1 ; Figure 6 The planar cross-sectional structure of the present invention is schematically shown Figure 2 ; Figure 7 for Figure 5 The enlarged structural diagram at B in the middle; Figure 8 for Figure 5 The enlarged structural diagram at D in the middle; Fig. 9 for Figure 7 Enlarged structural diagram at C in the middle.

[0019] Description of reference numerals: 1. Protective frame; 2. Driving device; 3. Connecting pipe; 4. Insert plate body; 5. Linkage assembly; 6. Gas storage box; 7. Pneumatic telescopic rod; 8. Sealing ring; 9. Guide plate; 41. Horizontal strip plate; 42. Trigger plate; 51. Gas guide structure; 511. Air pressure cylinder; 512. Air pressure block; 513. Telescopic rod; 514. Extension rod; 515. Push block; 516. Rubber sleeve; 52. Follower assembly; 521. Follower block; 522. Vertical rod; 53. Locking piece; 531. Connecting plate; 532. Connecting strip; 533. End plate; 534. Electric telescopic rod. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] The present invention provides Figure 1-Figure 9 A gate valve with an anti-leakage structure shown in the figure comprises a protection frame 1, one end of the protection frame 1 is connected to a driving device 2, a slide groove is provided in the protection frame 1, and an annular groove is provided in the protection frame 1; a connecting pipe 3 runs through the protection frame 1, a through groove connected to the protection frame 1 is provided on the side wall of the connecting pipe 3, a gate body 4 cooperating with the slide groove is provided in the through groove, and a card slot is provided on one side of the gate body 4; linkage components 5 cooperating with the gate body 4 are symmetrically provided on both sides of the slide groove, one end of the linkage component 5 cooperates with the card slot, and multiple linkage components 5 are connected to a gas storage box 6 through pipelines, and multiple pneumatic telescopic rods 7 are provided on one side of the gas storage box 6, and one end of the multiple pneumatic telescopic rods 7 is connected to a sealing ring 8 that fits the inner wall of the annular groove, and the sealing ring 8 is sleeved on the outer side of the protection frame 1.

[0022] Furthermore, the linkage component 5 includes an air guide structure 51 and a driven component 52. There are two air guide structures 51, which are symmetrically arranged on both sides of the slide. The air guide structure 51 is connected to the protective frame 1, and one end of the air guide structure 51 is inserted into the driven component 52; a circular hole is opened on the inner wall of the slide, and the driven component 52 is slidably connected in the circular hole, and the other end of the driven component 52 passes through the side wall of the protective frame 1 and extends to the outside of the protective frame 1; the driven component 52 is pushed by the plug board body 4 to drive the air guide structure 51 to move, and the air pressure change drives the gas storage box 6, the pneumatic telescopic rod 7 and the sealing ring 8 to move synchronously, and the sealing ring 8 is used to seal the periphery of the plug board body 4 to prevent water from entering the inside of the protective frame 1 through the gap when flowing.

[0023] Furthermore, the air guide structure 51 includes an air pressure cylinder 511, which is connected to the protective frame 1, and one end of the air pressure cylinder 511 is connected to the gas storage box 6 through a pipeline; the inner cavity of the air pressure cylinder 511 is slidably connected with an air pressure block 512, one end of the air pressure block 512 is connected to a telescopic rod 513, the telescopic rod 513 passes through the side wall of the air pressure cylinder 511, one end of the telescopic rod 513 is connected to an extension rod 514 and a push block 515, and the extension rod 514 is connected to the side wall of the air pressure cylinder 511 through a first spring; the cross-section of the push block 515 is trapezoidal, and a rubber sleeve 516 is sleeved on the outer side wall of the telescopic rod 513; when the air pressure block 512 is completely moved to the bottom end of the air pressure cylinder 511 in coordination with the movement of the telescopic rod 513, the rubber sleeve 516 just fits with one end of the air pressure cylinder 511, so as to achieve sealing of the sliding connection between the telescopic rod 513 and the air pressure cylinder 511, thereby improving the sealing effect; Furthermore, the driven assembly 52 includes a driven block 521, which is slidably connected in the circular hole. One end of the driven block 521 is set as a pointed end. An inclined through hole cooperating with the pushing block 515 is opened at the center of the driven block 521. The top of the driven block 521 is connected to the inner wall of the circular hole through a second spring. A vertical rod 522 is provided on one side of the driven block 521. The vertical rod 522 slides through the side wall of the protective frame 1 and is connected to a lock 53.

[0024] Furthermore, the lock 53 includes a connecting plate 531 connected to one end of the vertical rod 522, and a connecting strip 532 is slidably connected to one side of the connecting plate 531. The cross-section of the connecting strip 532 is L-shaped, and one end of the L-shaped connecting strip 532 is connected to an end plate 533, and one side of the end plate 533 is connected to an electric telescopic rod 534, and one end of the electric telescopic rod 534 is connected to the side wall of the protective frame 1; since the second spring is arranged in the protective frame 1, it is inconvenient to maintain. In order to avoid the situation where the second spring is unable to push the driven block 521 to reset due to insufficient elastic force caused by aging, the end plate 533 can be started, and the electric telescopic rod 534 can be used to push the connecting plate 531 to move, and pull the driven block 521 to reset.

[0025] Furthermore, two horizontal strips 41 are symmetrically provided on the side wall of the plug board body 4, and one side of the two horizontal strips 41 is connected to a trigger plate 42 that cooperates with the extension rod 514; when the plug board body 4 moves, it can contact the trigger plate 42 through the extension rod 514, so as to achieve a linkage effect.

[0026] Furthermore, a limiting groove is provided on the inner side wall of the slide groove, and the extension rod 514 is slidably connected in the limiting groove, which serves to limit the sliding position of the extension rod 514, thereby preventing the extension rod 514 from positional deviation and ensuring the stability of the linkage. Furthermore, a mounting ring is provided on the outer wall of the connecting pipe 3, and the mounting ring is mounted to the protection frame 1 by bolts, thereby improving the firmness of the connection between the protection frame 1 and the driving device 2 and facilitating installation.

[0027] Furthermore, a guide plate 9 arranged in a ring shape is provided in the connecting pipe 3; the guidance of the guide plate 9 enables the water flow to form a spiral flow pattern converging toward the center during the flow, thereby avoiding the dispersion of the water flow.

[0028] Working principle: In the first step, when the water flows through the connecting pipe 3, the water flows in a spiral flow mode that converges toward the center through the guidance of the guide plate 9. The advantage of the vortex flow is that the water flow can be concentrated to the center point, reducing the dispersion of the water flow during the flow, avoiding the leakage caused by the water flow entering the through groove during the dispersed flow, and reducing the probability of leakage; The second step is to start the driving device 2, and push the plug board body 4 to move in the chute through the power output of the driving device 2. When the plug board body 4 moves in the chute, when the opening on the plug board body 4 corresponds to the position of the connecting pipe 3, the water flow can flow smoothly through the connecting pipe 3. When the plug board body 4 moves and the opening does not correspond to the position of the connecting pipe 3, the water flow is blocked by the plug board body 4 and cannot pass through the inner cavity of the connecting pipe 3. This adjustment method is used to achieve the blocking of the water flow and the flow adjustment; In the third step, during the movement of the plugboard body 4, the trigger plate 42 is driven to move and contact the extension rod 514, thereby squeezing the first spring and pushing the extension rod 514 to drive the telescopic rod 513 and the air pressure block 512 to move in the air pressure cylinder 511; It should be noted that when the air pressure block 512 and the telescopic rod 513 are moving, two linkages are triggered simultaneously; 1. When the air pressure block 512 moves to the bottom of the inner cavity of the air pressure cylinder 511, the air pressure block 512 squeezes the gas in the air pressure cylinder 511, and completely transports all the gas in the air pressure cylinder 511 to the gas storage box 6 through the pipeline. After the air pressure in the gas storage box 6 increases, the gas is transported to the pneumatic telescopic rod 7. The pneumatic telescopic rod 7 is extended to push the corresponding sealing ring 8 to fit with the plugboard body 4. Since the sealing ring 8 is made of rubber, when it fits with the plugboard body 4, it can achieve the sealing of the gap around the plugboard body 4, avoid water leakage, and improve the sealing performance; Second, when the telescopic rod 513 moves, it drives the pushing block 515 to move, so that the pushing block 515 is separated from the driven block 521, and the elastic force of the second spring pushes the driven block 521 to one side of the plug board body 4. At this time, the tip of the bottom end of the driven block 521 is just inserted into the slot on the plug board body 4, so as to limit the plug board body 4, avoid the plug board body 4 loosening and causing the air pressure in the pipeline to decrease, causing the sealing ring 8 to contact and loosen with the plug board body 4, causing leakage, and improving the sealing effect.

[0029] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A gate valve with an anti-leakage structure, characterized in that: The invention comprises a protective frame (1), one end of which is connected to a driving device (2), a slide groove is provided in the protective frame (1), and an annular groove is provided in the protective frame (1); a connecting pipe (3) passes through the protective frame (1), a through groove communicating with the protective frame (1) is provided on the side wall of the connecting pipe (3), a plug plate body (4) cooperating with the slide groove is provided in the through groove, and a clamping groove is provided on one side of the plug plate body (4); linkage components (5) cooperating with the plug plate body (4) are symmetrically provided on both sides of the slide groove, one end of the linkage component (5) is cooperating with the clamping groove, and a plurality of the linkage components (5) are connected to a gas storage box (6) through pipelines, a plurality of pneumatic telescopic rods (7) are provided on one side of the gas storage box (6), one end of the plurality of pneumatic telescopic rods (7) is connected to a sealing ring (8) cooperating with the inner side wall of the annular groove, and the sealing ring (8) is sleeved on the outer side of the protective frame (1).

2. The gate valve with anti-leakage structure according to claim 1, characterized in that: The linkage assembly (5) comprises an air guide structure (51) and a driven assembly (52), wherein two air guide structures (51) are provided, and the two air guide structures (51) are symmetrically arranged on both sides of the slide slot, the air guide structure (51) is connected to the protection frame (1), and one end of the air guide structure (51) is plugged into the driven assembly (52); a circular hole is opened on the inner side wall of the slide slot, and the driven assembly (52) is slidably connected in the circular hole, and the other end of the driven assembly (52) penetrates the side wall of the protection frame (1) and extends to the outside of the protection frame (1).

3. The gate valve with anti-leakage structure according to claim 2, characterized in that: The air guide structure (51) comprises an air cylinder (511), the air cylinder (511) is connected to the protective frame (1), one end of the air cylinder (511) is connected to the gas storage box (6) through a pipeline; the inner cavity of the air cylinder (511) is slidably connected with an air block (512), one end of the air block (512) is connected to a telescopic rod (513), the telescopic rod (513) passes through the side wall of the air cylinder (511), one end of the telescopic rod (513) is connected to an extension rod (514) and a push block (515), the extension rod (514) is connected to the side wall of the air cylinder (511) through a first spring; the cross-section of the push block (515) is trapezoidal, and the outer side wall of the telescopic rod (513) is sleeved with a rubber sleeve (516).

4. The gate valve with anti-leakage structure according to claim 3, characterized in that: The driven assembly (52) comprises a driven block (521), the driven block (521) being slidably connected in the circular hole, one end of the driven block (521) being provided with a pointed end, an inclined through hole cooperating with the pushing block (515) being provided at the center of the driven block (521), the top of the driven block (521) being connected to the inner wall of the circular hole via a second spring, a vertical rod (522) being provided on one side of the driven block (521), the vertical rod (522) being slidably passed through the side wall of the protective frame (1) and being connected to a locking member (53).

5. The gate valve with anti-leakage structure according to claim 4, characterized in that: The locking member (53) comprises a connecting plate (531) connected to one end of the vertical rod (522); one side of the connecting plate (531) is slidably connected to a connecting strip (532); the cross section of the connecting strip (532) is L-shaped; one end of the L-shaped connecting strip (532) is connected to an end plate (533); one side of the end plate (533) is connected to an electric telescopic rod (534); one end of the electric telescopic rod (534) is connected to a side wall of the protective frame (1).

6. The gate valve with anti-leakage structure according to claim 3, characterized in that: Two horizontal strips (41) are symmetrically arranged on the side wall of the plug board body (4), and one side of each of the two horizontal strips (41) is connected to a trigger plate (42) that cooperates with the extension rod (514).

7. The gate valve with anti-leakage structure according to claim 3, characterized in that: A limiting groove is also provided on the inner side wall of the slide groove, and the extension rod (514) is slidably connected in the limiting groove.

8. The gate valve with anti-leakage structure according to claim 1, characterized in that: A mounting ring is provided on the outer side wall of the connecting pipe (3), and the mounting ring is mounted to the protective frame (1) via bolts.

9. The gate valve with anti-leakage structure according to claim 1, characterized in that: A guide plate (9) arranged in an annular shape is provided in the connecting pipe (3).

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