Mechanical connection gate valve

Abstract

The utility model discloses a mechanical connection gate valve, it includes: the communicating pipe and the valve pipe, the valve pipe sets up at the communicating pipe top, the communicating pipe both ends are provided with a plurality of flange disc, a plurality of dismounting mechanism, a plurality of dismounting mechanism sets up in the communicating pipe inner wall, sealing mechanism, sealing mechanism sets up in the valve pipe inner wall. This kind of mechanical connection gate valve, through setting up dismounting mechanism in the communicating pipe inner wall, maintenance person unscrews fixed ring and can take out the whole sealing element including movable plate from the valve end portion and replace or overhaul, greatly simplifies the maintenance process, shortens the downtime, through setting up sealing mechanism in the valve pipe inner wall, through extruding the movable plate of dismounting mechanism, realizes the hard sealing between the component, effectively avoids the leakage risk of soft material wear and tear, aging, and the service life is longer.

Description

Technical Field

[0001] This utility model relates to the field of sealing gate valve technology, specifically a mechanically connected gate valve. Background Technology

[0002] Mechanically connected gate valves are gate valves with flanges as the connection method, which is the most common. Flanged gate valves are stable and reliable when used in pipelines, so they are often used in high-pressure pipelines.

[0003] Existing patent document CN223120670U discloses a mechanically connected gate valve, comprising: a valve body, with main flanges symmetrically connected to both ends of the valve body, and fastening plates movably connected to the main flanges via long bolts; sealing rings are fixedly connected to both ends of the valve body cavity near the main flanges via grooves; valve seats are symmetrically connected to the middle of the valve body cavity, with a sealing gasket fixedly connected to the side of the valve seat away from the sealing rings; and limiting plates are symmetrically connected to both sides of the middle of the valve body cavity, with limiting grooves corresponding to the positions of the limiting plates on both sides of the valve plate. This invention, through the cooperation of long bolts, main flanges, clamping plates, and sealing rings, effectively enhances the sealing performance at the connection between the gate valve and the pipeline. Furthermore, through the cooperation of the valve seat, sealing gasket, and valve plate, it effectively enhances the sealing performance during opening and closing of the gate valve, and also effectively reduces wear on the valve plate, extending the service life of the gate valve.

[0004] Although this device offers many benefits, it still suffers from the following problems: Firstly, its sealing performance relies on the elastic deformation of the gasket. Under frequent opening and closing, media erosion, or high-temperature environments, the gasket is prone to wear, permanent deformation, or aging, leading to a rapid decline in sealing performance and a limited lifespan. Secondly, once the gasket is damaged, replacement and maintenance are extremely inconvenient, requiring the entire valve to be removed from the pipeline, resulting in long downtime and high maintenance costs. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] 1. Technical problems to be solved:

[0007] To address the problems mentioned above, such as the sealing effect of the device relying on the elastic deformation of the gasket, which is prone to wear, permanent deformation, or aging under frequent opening and closing, media erosion, or high-temperature environments, leading to rapid degradation of sealing performance and limited lifespan, this invention is proposed. Furthermore, once the gasket is damaged, replacement and maintenance are extremely inconvenient, requiring the entire valve to be removed from the pipeline, resulting in long downtime and high maintenance costs.

[0008] Therefore, the purpose of this utility model is to provide a mechanically connected gate valve with a stable sealing structure and the ability to be quickly disassembled and maintained.

[0009] 2. Technical Solution:

[0010] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0011] A mechanically connected gate valve includes: a connecting pipe and a valve pipe, wherein the valve pipe is disposed at the top end of the connecting pipe and multiple flanges are disposed at both ends of the connecting pipe;

[0012] Multiple disassembly mechanisms are disposed on the inner wall of the connecting pipe;

[0013] A sealing mechanism is disposed on the inner wall of the valve pipe.

[0014] As a preferred embodiment of the mechanically connected gate valve of this utility model, the disassembly mechanism includes: an external thread a, wherein the external thread a is disposed on the outer side of the inner wall of the connecting pipe;

[0015] A movable plate, wherein the movable plate is disposed on the inner wall of the connecting pipe;

[0016] Multiple limiting rods, one end of each limiting rod being disposed on the outer side of the movable plate;

[0017] A fixed ring is provided at the other end of a plurality of limiting rods. A plurality of limiting grooves are provided on the side wall of the fixed ring. The other end of the limiting rod is provided on the inner wall of the limiting groove. A handle a is provided on the inner wall of the fixed ring. A rotating groove a is provided on the outer circumference of the fixed ring. The rotating groove a is threadedly connected to the external thread a.

[0018] Multiple damping spring shock absorbers, with one end of each damping spring shock absorber disposed on the outer side of the movable plate and the other end of each damping spring shock absorber disposed on the inner side of the fixed ring.

[0019] In a preferred embodiment of the mechanically connected gate valve of this utility model, an inclined plate a is provided on the inner side of the movable plate, and the inclined plate a can make the center thickness of the inner side of the movable plate greater than the edge thickness of the movable plate.

[0020] As a preferred embodiment of the mechanically connected gate valve of this utility model, the sealing mechanism includes: a movable block, the movable block being disposed on the inner wall of the valve pipe, and a rotating groove b being provided on the outer periphery of the movable block;

[0021] External thread b, the external thread b is provided on the inner wall of the valve pipe, and the external thread b and the rotating groove b are threadedly connected;

[0022] A pull rod, wherein the pull rod is disposed at the top of the movable block;

[0023] A rotating disk is disposed at the top of the pull rod;

[0024] Handle b, wherein handle b is disposed at the top of the rotating disk, and a limit block is provided at the top of handle b;

[0025] A collar is disposed on the outer periphery of the handle b.

[0026] In a preferred embodiment of the mechanically connected gate valve of this utility model, an inclined plate b is provided at the bottom end of the movable block, and the inclined plate b can make the thickness of the inner center of the movable block greater than the thickness of the edge of the movable block.

[0027] In a preferred embodiment of the mechanically connected gate valve of this utility model, the flange includes a mating ring, a rotating groove c is provided on the outer circumference of the mating ring, and a mounting plate is provided on the outer wall of the mating ring. The rotating groove c is threadedly connected to the external thread a.

[0028] 3. Beneficial effects:

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] This type of mechanically connected gate valve, by setting a disassembly mechanism on the inner wall of the connecting pipe, allows the maintenance personnel to loosen the fixing ring and remove the entire set of sealing elements, including the movable plate, from the valve end for replacement or repair, which greatly simplifies the maintenance process and shortens downtime.

[0031] This type of mechanically connected gate valve achieves a hard seal between components by setting a sealing mechanism on the inner wall of the valve pipe and squeezing the movable plate of the disassembly mechanism. This effectively avoids the risk of leakage caused by wear and aging of soft materials and extends the service life. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0033] Figure 1 This is a schematic diagram of the overall structure of a mechanically connected gate valve according to the present invention;

[0034] Figure 2 This is a schematic diagram of the disassembly mechanism of a mechanically connected gate valve according to the present invention;

[0035] Figure 3 This is a schematic diagram of the rotating groove a structure of a mechanically connected gate valve according to this utility model;

[0036] Figure 4 This is a schematic diagram of the sealing mechanism of a mechanically connected gate valve according to the present invention;

[0037] Figure 5 This is a schematic diagram of the valve pipe structure of a mechanically connected gate valve according to this utility model.

[0038] The following are the labeling instructions in the diagram: 1. Connecting pipe; 2. Valve pipe; 3. Flange; 31. Butt ring; 32. Rotating groove c; 33. Mounting plate; 100. Disassembly mechanism; 101. External thread a; 102. Movable plate; 103. Limiting rod; 104. Fixing ring; 105. Limiting groove; 106. Handle a; 107. Rotating groove a; 108. Damping spring shock absorber; 109. Inclined plate a; 200. Sealing mechanism; 201. Movable block; 202. Rotating groove b; 203. Inclined plate b; 204. External thread b; 205. Tie rod; 206. Rotating disc; 207. Handle b; 208. Limiting block; 209. Collar. Detailed Implementation

[0039] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0040] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0041] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0042] The term "connection method" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0044] This utility model provides an overall structural diagram of an embodiment of a mechanically connected gate valve, including:

[0045] Please see Figures 1-5 The mechanically connected gate valve of this embodiment includes: a connecting pipe 1 and a valve pipe 2, the valve pipe 2 being welded to the top end of the connecting pipe 1, and multiple flanges 3 being threaded to both ends of the connecting pipe 1;

[0046] Multiple disassembly mechanisms 100 are provided on the inner wall of the connecting pipe 1. Each disassembly mechanism 100 includes a movable plate 102, which is slidably connected to the inner wall of the connecting pipe 1 and can be disassembled from the inner wall of the connecting pipe 1.

[0047] The sealing mechanism 200 is installed on the inner wall of the valve pipe 2 and can seal the connecting pipe 1.

[0048] It is worth noting that, in order to disassemble the movable plate 102, the disassembly mechanism 100 specifically includes: an external thread a101 opened on the outer side of the inner wall of the connecting pipe 1;

[0049] The movable plate 102 is tenon-and-mortise connected to the inner wall of the connecting pipe 1;

[0050] Multiple limit rods 103 are welded at one end to the outside of the movable plate 102;

[0051] The fixed ring 104 is slidably connected to the other end of multiple limiting rods 103. Multiple limiting grooves 105 are provided on the side wall of the fixed ring 104. The other end of the limiting rod 103 is slidably connected to the inner wall of the limiting groove 105. A handle a106 is welded to the inner wall of the fixed ring 104. A rotating groove a107 is provided on the outer circumference of the fixed ring 104. The rotating groove a107 is threadedly connected to the external thread a101, which allows the fixed ring 104 to be disassembled. The external thread a101 can fix the fixed ring 104 when the movable plate 102 moves.

[0052] Multiple damping spring shock absorbers 108 are welded at one end to the outside of the movable plate 102, and at the other end to the inside of the fixed ring 104, which can reset the movable plate 102.

[0053] Next, in order to move the movable plate 102, specifically, an inclined plate a109 is welded to the inner side of the movable plate 102. The inclined plate a109 can make the thickness of the inner center of the movable plate 102 greater than the thickness of the edge of the movable plate 102, so that the movable plate 102 can be moved by squeezing from the edge of the movable plate 102.

[0054] Meanwhile, in order to seal the connecting pipe 1, specifically, the sealing mechanism 200 includes: threading the movable block 201 to the inner wall of the valve pipe 2, and providing a rotating groove b202 on the outer periphery of the movable block 201;

[0055] The external thread b204 is formed on the inner wall of the valve pipe 2. The external thread b204 is threadedly connected to the rotating groove b202, which can push the movable block 201 to move.

[0056] The pull rod 205 is welded to the top of the movable block 201, the rotating disk 206 is welded to the top of the pull rod 205, the handle b207 is welded to the top of the rotating disk 206, and the top of the handle b207 is welded to the limit block 208. The movable block 201 can be controlled to rotate by holding the handle b207 and rotating the rotating disk 206.

[0057] The collar 209 is rotatably connected to the outer periphery of the handle b207. The collar 209 is directly wrapped around the outside of the handle b207 for installation, reducing friction and preventing damage to the palm when controlling the handle b207. In this embodiment, the collar 209 is made of nylon cloth.

[0058] Furthermore, in order to compress the movable plate 102, specifically, a slant plate b203 is welded to the bottom end of the movable block 201, making the bottom of the movable block 201 conical. The slant plate b203 can make the thickness of the inner center of the movable block 201 greater than the thickness of the edge of the movable block 201, so that the inner center of the movable block 201 can compress the edge of the movable plate 102.

[0059] Finally, in order to disassemble flange 3, specifically, flange 3 includes a mating ring 31, a rotating groove c32 is provided on the outer periphery of the mating ring 31, and a mounting plate 33 is welded to the outer wall of the mating ring 31. The rotating groove c32 is threadedly connected to the external thread a101.

[0060] Combination Figures 1-5 The mechanically connected gate valve of this embodiment is used in the following specific process:

[0061] 1. According to the actual use, rotate the handle b207 counterclockwise to drive the rotating disk 206 and the pull rod 205 to rotate; the movable block 201 moves upward through the thread engagement between its rotating groove b202 and the external thread b204 on the valve pipe 2, so that the inclined plate b203 at its bottom disengages from the inclined plate a109 on the movable plate 102; the movable plate 102 resets inward under the action of the damping spring shock absorber 108, the flow channel opens, and the water can pass through the inner wall of the fixed ring 104, and then pass between the inner wall of the movable plate 102 and the connecting pipe 1.

[0062] 2: Rotate handle b207 clockwise to drive movable block 201 to move downward; the inclined plate b203 at the bottom of movable block 201 presses against the inclined plate a109 on the inner side of movable plate 102; through the action of the inclined surface, the axial downward pressure is converted into a force that moves movable plate 102 to the outside of connecting pipe 1, and finally makes movable plate 102 press against the inner wall of connecting pipe 1, cutting off the flow channel;

[0063] 3: When maintaining the disassembly mechanism 100, first remove the flange 3, rotate the handle a106 on the fixing ring 104 counterclockwise to disengage the rotating groove a107 of the fixing ring 104 from the external thread a101 on the connecting pipe 1; pull the entire disassembly mechanism 100 (including the fixing ring 104, the limit rod 103, the damping spring shock absorber 108, and the movable plate 102) from the end of the connecting pipe 1; after maintenance, reinsert the mechanism and tighten the fixing ring 104 clockwise, and then install the flange 3.

[0064] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A mechanically connected gate valve, characterized in that, It includes: a connecting pipe (1) and a valve pipe (2), wherein the valve pipe (2) is disposed at the top of the connecting pipe (1), and multiple flanges (3) are disposed at both ends of the connecting pipe (1); Multiple disassembly mechanisms (100) are disposed on the inner wall of the connecting pipe (1), and each disassembly mechanism (100) includes a movable plate (102) disposed on the inner wall of the connecting pipe (1). A sealing mechanism (200) is disposed on the inner wall of the valve pipe (2).

2. The mechanically connected gate valve according to claim 1, characterized in that, The disassembly mechanism (100) includes an external thread a (101), which is disposed on the outer side of the inner wall of the connecting pipe (1); Multiple limiting rods (103), one end of each limiting rod (103) is disposed on the outside of the movable plate (102); A fixing ring (104) is provided at the other end of a plurality of limiting rods (103). A plurality of limiting grooves (105) are provided on the side wall of the fixing ring (104). The other end of the limiting rod (103) is provided on the inner wall of the limiting groove (105). A handle a (106) is provided on the inner wall of the fixing ring (104). A rotating groove a (107) is provided on the outer periphery of the fixing ring (104). The rotating groove a (107) is threadedly connected to the external thread a (101). Multiple damping spring shock absorbers (108) are provided, with one end of each damping spring shock absorber (108) disposed on the outside of the movable plate (102) and the other end of each damping spring shock absorber (108) disposed on the inside of the fixed ring (104).

3. The mechanically connected gate valve according to claim 2, characterized in that, An inclined plate a (109) is provided on the inner side of the movable plate (102), and the inclined plate a (109) can make the center thickness of the inner side of the movable plate (102) greater than the edge thickness of the movable plate (102).

4. The mechanically connected gate valve according to claim 3, characterized in that, The sealing mechanism (200) includes: a movable block (201), the movable block (201) is disposed on the inner wall of the valve pipe (2), and a rotating groove b (202) is provided on the outer periphery of the movable block (201); External thread b (204), the external thread b (204) is provided on the inner wall of the valve pipe (2), and the external thread b (204) and the rotating groove b (202) are threadedly connected; A pull rod (205) is disposed at the top of the movable block (201); A rotating disk (206) is disposed at the top of the pull rod (205); Handle b (207), the handle b (207) is disposed at the top of the rotating disk (206), and a limit block (208) is disposed at the top of the handle b (207). A collar (209) is disposed on the outer periphery of the handle b (207).

5. The mechanically connected gate valve according to claim 4, characterized in that, The bottom end of the movable block (201) is provided with an inclined plate b (203), which can make the thickness of the inner center of the movable block (201) greater than the thickness of the edge of the movable block (201).

6. The mechanically connected gate valve according to claim 5, characterized in that, The flange (3) includes a mating ring (31), a rotating groove c (32) is provided on the outer periphery of the mating ring (31), and an mounting plate (33) is provided on the outer wall of the mating ring (31). The rotating groove c (32) is threadedly connected to the external thread a (101).

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