Quickly-mounted flange gate valve

Abstract

The utility model relates to the related field of gate valves, in particular to a quick-mounting flange gate valve which comprises a valve body, a flange, a supporting pipe, a convex ring, a sealing silica gel sheet, a connecting rod, a sleeve, a connecting hole, a groove, a limiting block, a spring, an opening, an inclined plane and the like. The supporting ring position valve body and an external pipeline are arranged to provide extra support, the overall structural strength of the joint of the gate valve and the pipeline is enhanced, the risk of connection looseness or damage caused by pressure fluctuation or external impact is reduced, double sealing is provided, the possibility of medium leakage is reduced, and the service life of the gate valve is prolonged. And when the gate valve is connected with the pipeline, the limiting block moves outwards under the elastic force of the spring and is attached to the inner sides of the flanges on the gate valve and the pipeline, so that the flanges are fixed through the limiting block, the flanges are prevented from falling off, the gate valve and the pipeline are connected, external tools are not needed in the mounting process, and the mounting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of gate valves, and in particular to a quick-installation flange gate valve. Background Technology

[0002] A flanged gate valve is a common type of industrial valve, mainly used to control the flow of media (such as water, steam, oil, etc.) in pipelines. It achieves the function of opening and closing through a gate that can move up and down. When the gate is fully raised, the medium can flow freely; when the gate is lowered and tightly fitted to the valve seat, the flow of the medium is blocked.

[0003] When connecting existing flanged gate valves to external pipelines, bolts are typically used to connect the flanges on the gate valve to the flanges on the pipeline. However, direct flange connection is difficult to provide additional mechanical support, and the overall structural strength of the flange connection is low. Especially in high-pressure or large-diameter pipeline systems, media leakage or connection failure is prone to occur. Furthermore, existing flange connections usually rely on a single sealing gasket, which has a relatively simple and unreliable sealing effect. Especially during long-term operation or under large temperature variations, leakage is likely to occur, which can affect the stable delivery of media by the gate valve. At the same time, the installation process requires the use of external mounting bolts, resulting in low installation efficiency. Summary of the Invention

[0004] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a quick-installation flange gate valve to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a quick-installation flange gate valve, comprising a valve body, a valve plate movably installed inside the valve body, and a valve stem rotatably installed in the middle of the top surface of the valve plate. A flange is provided at each of the left and right ends of the valve body. The valve stem is threadedly connected to the top of the valve body. A handwheel is installed on the top of the valve stem. A support tube is movably inserted into the valve body. A convex ring is provided in the middle of the outer side of the support tube. Sealing silicone sheets are pasted on the outer surfaces of the support tube and the convex ring. The sealing silicone sheets on the support tube and the convex ring are respectively attached to the inner ring of the valve body and the outer end face of the flange.

[0006] Several connecting rods are fixedly embedded on the convex ring. Each of the left and right ends of the connecting rod is movably fitted with a sleeve. The connecting rod and the sleeve movably pass through the inner side of the connecting hole opened on the side surface of the flange.

[0007] The connecting rod has a set of grooves at each of its left and right ends. Each set of grooves consists of several grooves evenly distributed along the circumferential direction on the outer wall of the connecting rod. The sleeve has several openings that correspond one-to-one with the grooves.

[0008] A limiting block is slidably installed in the groove. The limiting block is connected to the inner end face of the groove by a spring, and after passing through the inside of the groove and the opening, the limiting block fits against the inner end face of the flange.

[0009] The side surface of the limiting block is provided with an inclined surface at the end away from the spring.

[0010] Preferably, the convex ring is flush with the side surface of the flange.

[0011] Preferably, the flange is provided with a plurality of T-bolts threadedly connected to it, and the plurality of T-bolts correspond one-to-one with a plurality of connecting rods, and the connecting rods and the sleeve are provided with limiting holes corresponding to the T-bolts. When the limiting block passes through the inner side of the opening, the limiting holes on the connecting rods and the sleeve are aligned and connected.

[0012] Preferably, the inner side of the opening facing the inclined plane has an outwardly convex arc shape.

[0013] Preferably, the convex ring is perpendicular to the circumferential side surface of the support pipe, and the convex ring is parallel to the side surface of the flange.

[0014] The beneficial effects of this utility model are:

[0015] This invention enhances the overall structural strength of the gate valve-pipe connection by providing additional support through a supporting ring valve body and external piping. This reduces the risk of loosening or damage due to pressure fluctuations or external impacts. Sealing silicone sheets are installed on both the support pipe and the convex ring, providing a double seal for the gate valve-pipe connection and reducing the possibility of media leakage. When connecting the gate valve to the pipe, rotating the sleeve aligns the opening with the groove, causing the limiting block to move outward under the spring force and fit against the inner side of the flange on both the gate valve and the pipe. This fixing of the flange position prevents the flanges from detaching, thus achieving the connection between the gate valve and the pipe. The installation process does not require external tools, improving installation efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the flange connection structure of this utility model;

[0018] Figure 3 This is a side view sectional view of the connecting rod connection structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the limiting block in its contracted state according to this utility model.

[0020] The components include: valve body-1, valve plate-2, valve stem-3, handwheel-4, flange-5, support pipe-6, convex ring-7, sealing silicone sheet-8, connecting rod-9, sleeve-10, connecting hole-11, groove-12, limit block-13, spring-14, opening-15, limit bolt-16, limit hole-17, and inclined surface-18. Detailed Implementation

[0021] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0022] like Figure 1 As shown, this utility model provides a quick-installation flange gate valve, including a valve body 1 and a valve plate 2 movably installed inside the valve body 1. The valve plate 2 can slide up and down along the inner side of the valve body 1 to realize the opening and closing of the gate valve. A valve stem 3 is installed in the middle of the top surface of the valve plate 2. A flange 5 is provided at each of the left and right ends of the valve body 1. The valve stem 3 is threaded to the top of the inner side of the valve body 1. A handwheel 4 located above the valve body 1 is installed on the top of the valve stem 3.

[0023] like Figures 1 to 4 As shown, in this embodiment, a support tube 6 is movably inserted into the valve body 1. The outer middle of the support tube 6 is provided with a convex ring 7 as an integral structure. The outer surfaces of the support tube 6 and the convex ring 7 are attached with sealing silicone sheets 8. The sealing silicone sheets 8 on the outer surfaces of the support tube 6 and the convex ring 7 are provided with an integral structure to provide double sealing for the connection between the gate valve and the pipeline, so as to further reduce media leakage. The sealing silicone sheets 8 on the support tube 6 and the convex ring 7 are respectively attached to the inner ring of the valve body 1 and the outer end face of the flange 5.

[0024] Several connecting rods 9 are fixedly embedded on the convex ring 7. A sleeve 10 is movably sleeved at each of the left and right ends of the connecting rod 9. The connecting rod 9 and the sleeve 10 movably pass through the inner side of the connecting hole 11 opened on the right end face of the flange 5.

[0025] A set of grooves 12 is provided at each of the left and right ends of the outer side of the connecting rod 9. Each set of grooves 12 is composed of several grooves 12 evenly distributed along the annular direction on the outer wall of the connecting rod 9. Several openings 15 corresponding to the grooves 12 are provided on the sleeve 10.

[0026] A limiting block 13 is slidably installed in the groove 12. The limiting block 13 is connected to the inner end face of the groove 12 by a spring 14. After passing through the groove 12 and the inner side of the opening 15, the limiting block 13 fits against the left end face of the flange 5. The limiting block 13 fits against the left end face of the flange 5 to reduce the connecting rod 9 from falling off the flange 5.

[0027] A slope 18 is provided on the side surface of the limiting block 13 away from the spring 14, so that when the sleeve 10 is rotated, the opening 15 squeezes the slope 18 and pushes the limiting block 13 to retract into the groove 12.

[0028] The convex ring 7 is flush with the side surface of the flange 5, providing an aesthetically pleasing connection between the convex ring 7 and the flange 5.

[0029] Among them, the convex ring 7 is perpendicular to the circumferential side surface of the support pipe 6, and the convex ring 7 is parallel to the right end face of the flange 5, so that the convex ring 7 can drive the sealing silicone sheet 8 to fit smoothly onto the right end face of the flange 5.

[0030] In this embodiment, a plurality of T-bolts 16 are threadedly connected to the flange 5. The plurality of T-bolts 16 correspond one-to-one with a plurality of connecting rods 9. The connecting rods 9 and the sleeve 10 are provided with limiting holes 17 corresponding to the T-bolts 16. When the limiting block 13 passes through the inner side of the opening 15, the limiting holes 17 on the connecting rods 9 and the sleeve 10 are aligned and connected. This facilitates the use of the T-bolts 16 in conjunction with the limiting holes 17 to limit the sleeve 10 and the connecting rods 9, thereby improving the stability of the connection between the connecting rods 9 and the flange 5. It also prevents the sleeve 10 from rotating arbitrarily and causing the limiting block 13 to shrink into the groove 12.

[0031] In this embodiment, the inner side of the opening 15 facing the inclined surface 18 is an outwardly convex arc shape, which is beneficial for the opening 15 to stably press the inclined surface 18 when rotating the sleeve 10, thereby pushing the limiting block 13 to retract into the groove 12.

[0032] Specifically, during use, the support tube 6 drives the sealing silicone sheet 8 to be inserted into the valve body 1, and the support tube 6 drives the connecting rod 9 on the convex ring 7 and the sleeve 10 to be aligned and inserted into the connecting hole 11. When the sealing silicone sheet 8 on the convex ring 7 is attached to the outer surface of the flange 5, the sleeve 10 is rotated so that the sleeve 10 drives the opening 15 to rotate and align with the groove 12. At this time, the limiting block 13 in the groove 12 is subjected to the elastic force of the spring 14 and passes through the opening 15 to be attached to the left end face of the flange 5.

[0033] Then, in the same way, the external pipe is fitted onto the right end of the support pipe 6, and the flange 5 on the pipe is fitted with the sealing silicone sheet 8 on the right end of the convex ring 7. The right end of the connecting rod 9 and the right end sleeve 10 are inserted into the connecting hole 11 on the flange 5 of the pipe. The right end sleeve 10 is rotated so that a set of limit blocks 13 on the right end fits against the right end face of the flange 5 of the pipe. The position of the connecting rod 9 is fixed by the two sets of limit blocks 13. The connecting rod 9 then connects and fixes the two flanges 5 to achieve quick installation and connection of the gate valve and the pipe. The rotatable T-bolt 16 can be inserted into the limit hole 17 to further strengthen the connection between the connecting rod 9 and the flange 5. The left end of the valve body 1 is connected to the left end pipe in the same way.

[0034] When using a gate valve, the valve stem 3 can be rotated by turning the handwheel 5. When the valve stem 3 rotates, it moves vertically inside the valve body 1. When the handwheel 5 rotates the valve stem 3 and causes the valve plate 2 to move upward, the medium in the pipeline can pass through the valve body 1 for transportation. When the handwheel 5 rotates the valve stem 3 and causes the valve plate 2 to move downward, the gate valve is closed, and the medium in the pipeline cannot pass through the valve body 1 for transportation.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-installation flanged gate valve, comprising a valve body, a valve plate movably installed inside the valve body, and a valve stem rotatably installed in the middle of the top surface of the valve plate, wherein a flange is provided at each of the left and right ends of the valve body, the valve stem is threadedly connected to the top of the inner side of the valve body, and a handwheel is installed on the top of the valve stem; Its features are, A support tube is movably inserted into the valve body. A convex ring is provided in the middle of the outer side of the support tube. A sealing silicone sheet is pasted on the outer surface of the support tube and the convex ring. The sealing silicone sheet on the support tube and the convex ring is respectively attached to the inner ring of the valve body and the outer end face of the flange. Several connecting rods are fixedly embedded on the convex ring. Each of the left and right ends of the connecting rod is movably fitted with a sleeve. The connecting rod and the sleeve movably pass through the inner side of the connecting hole opened on the side surface of the flange. The connecting rod has a set of grooves at each of its left and right ends. Each set of grooves consists of several grooves evenly distributed along the circumferential direction on the outer wall of the connecting rod. The sleeve has several openings that correspond one-to-one with the grooves. A limiting block is slidably installed in the groove. The limiting block is connected to the inner end face of the groove by a spring, and after passing through the inside of the groove and the opening, the limiting block fits against the inner end face of the flange. The side surface of the limiting block is provided with an inclined surface at the end away from the spring.

2. The quick-installation flange gate valve according to claim 1, characterized in that: The convex ring is flush with the side surface of the flange.

3. The quick-installation flange gate valve according to claim 1, characterized in that: The flange is threaded with several T-bolts, each corresponding to a connecting rod. The connecting rod and the sleeve are provided with limiting holes corresponding to the T-bolts. When the limiting block passes through the inside of the opening, the limiting holes on the connecting rod and the sleeve are aligned and connected.

4. The quick-installation flange gate valve according to claim 1, characterized in that: Furthermore, the inner side of the opening, directly opposite the inclined surface, has an outwardly convex arc shape.

5. The quick-installation flange gate valve according to claim 1, characterized in that: The convex ring is perpendicular to the circumferential side surface of the support pipe, and the convex ring is parallel to the side surface of the flange.

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