Valve plate type gate valve

Abstract

The utility model relates to the field of gate valves, and particularly discloses a valve plate type gate valve which comprises a gate valve body, the gate valve body comprises an upper valve seat and a lower valve seat, a screw rod is arranged in the upper valve seat, a valve plate is installed at the lower end of the screw rod and located in the lower valve seat, reinforcing valve plates are arranged on the two sides of the valve plate, and embedded grooves are formed between the valve plate and the two reinforcing valve plates. An I-shaped connecting rod is arranged in the embedded groove, shielding seats are installed on the inner side walls of the embedded groove, springs are connected between the two ends of the I-shaped connecting rod and the valve plate and between the two ends of the I-shaped connecting rod and the reinforcing valve plates, conical convex ribs are installed on the sides, away from the valve plate, of the two reinforcing valve plates, and convex rib clamping pads are installed at the positions, corresponding to the conical convex ribs, of the inner side wall of the lower valve seat. The reinforcing valve plate is in contact with the impact of water flow, the gate valve can be normally used by replacing the reinforcing valve plate under the condition that the gate valve is damaged after being used for a long time, and meanwhile the impact can be buffered to a certain degree when the valve plate and the reinforcing valve plate are in non-rigid connection.

Description

A type of valve plate gate valve Technical Field

[0001] This utility model relates to the field of gate valves, specifically a valve plate gate valve. Background Technology

[0002] A gate valve is an opening and closing element consisting of a gate. The direction of the gate's movement is perpendicular to the direction of the fluid. Gate valves can only be fully open or fully closed; they cannot be used for regulation or throttling. Gate valves achieve sealing through the contact between the valve seat and the gate. When the gate valve is closed, the sealing surface can rely solely on the medium pressure to seal, meaning that the sealing surface of the gate is pressed against the valve seat on the other side by the medium pressure to ensure the sealing surface is sealed. This is called self-sealing. Most gate valves use forced sealing, meaning that when the valve is closed, external force is required to force the gate against the valve seat to ensure the sealing surface is sealed.

[0003] However, the valve plate of current gate valves is subjected to a large pressure. When in use, it is often made by welding plates onto the valve plate. When the welded valve plate is damaged by long-term impact, it is inconvenient to replace it. Summary of the Invention

[0004] In view of the shortcomings of the prior art, this utility model provides a valve plate gate valve, which solves the problems mentioned in the background.

[0005] This utility model provides the following technical solution: a valve plate type gate valve, including a gate valve, the gate valve including: an upper valve seat and a lower valve seat, the upper valve seat is provided with a screw, the lower end of the screw is located inside the lower valve seat and a valve plate is installed thereon, both sides of the valve plate are provided with reinforcing valve plates, there is an embedded groove between the valve plate and the two reinforcing valve plates, an I-shaped connecting rod is provided inside the embedded groove, a shielding seat is installed on the inner side wall of the embedded groove, the two ends of the I-shaped connecting rod are connected to the valve plate and the reinforcing valve plate with springs, the two reinforcing valve plates are provided with tapered ribs on the side away from the valve plate, and the inner side wall of the lower valve seat is provided with a rib retainer corresponding to the position of the tapered rib.

[0006] As a further embodiment of this utility model: a bottom groove is installed below the valve plate on the inner side wall of the lower valve seat, and flanges are installed at both ends of the lower valve seat.

[0007] As a further improvement of this utility model: a rotating handle is installed on the outer side of the upper end of the screw, and an engagement seat is provided on the upper end of the upper valve seat located on the outer side of the screw.

[0008] As a further embodiment of this utility model: the spring is fixedly connected to the I-shaped connecting rod, the tapered rib is fixedly connected to the reinforcing valve plate, and a water-blocking pad is installed inside the upper valve seat.

[0009] As a further improvement of this utility model, a water baffle is installed above the valve plate on the outside of the screw.

[0010] As a further improvement of this utility model, the valve plate is engaged with the bottom slot.

[0011] As a further improvement of this utility model, the convex rib pad is fixedly connected to the lower valve seat.

[0012] As a further improvement of this utility model, the screw is rotatably connected to the meshing seat.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The reinforced valve plate is used to absorb the impact of the water flow. If it is damaged after long-term use, the reinforced valve plate can be replaced to allow the gate valve to function normally. At the same time, the non-rigid connection between the valve plate and the reinforced valve plate can provide a certain degree of buffering against the impact.

[0015] 2. When the tapered rib on the outer side of the reinforcing valve plate comes into contact with the rib pad on the inner side of the lower valve seat, the reinforcing valve plates on both sides fit tightly against the sides of the valve plate, thus completing the sealing function of the gate valve. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the structure of a valve plate gate valve;

[0017] Figure 2 is a cross-sectional view of a gate valve in a valve plate type gate valve;

[0018] Figure 3 is a partially enlarged schematic diagram of the reinforced valve plate in a valve plate gate valve;

[0019] Figure 4 is a side view of a gate valve in a plate gate valve.

[0020] In the diagram: 1. Gate valve; 2. Upper valve seat; 3. Flange; 4. Screw; 5. Rotary handle; 6. Engaging seat; 7. Lower valve seat; 201. Water baffle; 401. Water baffle seat; 402. Valve plate; 403. Reinforced valve plate; 404. Embedded groove; 405. Spring; 406. I-shaped connecting rod; 407. Barrier seat; 408. Conical rib; 701. Rib retainer; 702. Bottom retainer groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] As shown in Figures 1-4, this embodiment provides a valve plate gate valve, including a gate valve 1. The gate valve 1 includes an upper valve seat 2 and a lower valve seat 7. A screw 4 is disposed inside the upper valve seat 2, and a water-retaining pad 201 is installed inside the upper valve seat 2. A valve plate 402 is installed inside the lower valve seat 7 at the lower end of the screw 4. Reinforcing valve plates 403 are disposed on both sides of the valve plate 402. An embedded groove 404 is formed between the valve plate 402 and the two reinforcing valve plates 403. An I-shaped connecting rod 406 is disposed inside the embedded groove 404. The inner sidewalls of 404 are equipped with shielding seats 407. The two ends of the I-shaped connecting rod 406 are connected to the valve plate 402 and the reinforcing valve plate 403 by springs 405. The springs 405 are fixedly connected to the I-shaped connecting rod 406. The two reinforcing valve plates 403 are equipped with tapered ribs 408 on the side away from the valve plate 402. The tapered ribs 408 are fixedly connected to the reinforcing valve plates 403. The inner sidewalls of the lower valve seat 7 are equipped with rib pads 701 corresponding to the positions of the tapered ribs 408. The rib pads 701 are fixedly connected to the lower valve seat 7.

[0023] As shown in Figures 2-3, in this embodiment, a bottom groove 702 is installed on the inner wall of the lower valve seat 7 below the valve plate 402, and the valve plate 402 is engaged with the bottom groove 702. A water baffle 401 is installed on the outer side of the screw 4 above the valve plate 402. Flanges 3 are installed on both ends of the lower valve seat 7. A rotating handle 5 is installed on the outer side of the upper end of the screw 4. A meshing seat 6 is provided on the upper end of the upper valve seat 2 on the outer side of the screw 4. The screw 4 is meshed and rotated with the meshing seat 6.

[0024] The working principle of this utility model is as follows: Two reinforcing valve plates 403 are set on the outer sides of the valve plate 402 and connected to the inner groove 404 by two I-shaped connecting rods 406. Springs 405 are set at both ends of the I-shaped connecting rods 406 inside the inner groove 404. When a torque is applied to the rotating handle 5, the control screw 4 moves downward into the valve seat 7. The outer side of the reinforcing valve plate 403 will contact the inside of the rib pad 701. As the reinforcing valve plate 403 continues to move downward into the valve seat 7, when the tapered rib 408 on the outer side of the reinforcing valve plate 403 contacts the rib pad 701, the two reinforcing valve plates 403 are pushed towards the valve plate 402. The direction of the compression causes the I-shaped connecting rod 406 to be compressed and contracted into the inner groove 404. At the same time, the spring 405 is compressed and deformed. After the bottom end of the valve plate 402 is fully contacted and inserted into the bottom groove 702, the center position of the conical rib 408 is fully contacted with the position of the rib pad 701, thus completing the compression of the two reinforcing valve plates 403. Therefore, the two sides of the valve plate 402 are blocked, and the reinforcing valve plates 403 can be used to contact the impact of the water flow. If the reinforcing valve plates 403 are damaged after long-term use, they can be replaced to allow the gate valve 1 to be used normally. At the same time, when the valve plate 402 and the reinforcing valve plate 403 are not rigidly connected, they can provide a certain degree of buffering against the impact.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve plate type gate valve, comprising a gate valve (1), characterized in that, The gate valve (1) includes an upper valve seat (2) and a lower valve seat (7). A screw (4) is installed inside the upper valve seat (2). A valve plate (402) is installed inside the lower valve seat (7) at the lower end of the screw (4). Reinforcing valve plates (403) are provided on both sides of the valve plate (402). An embedded groove (404) is formed between the valve plate (402) and the two reinforcing valve plates (403). An I-shaped connecting rod is installed inside the embedded groove (404). 406), the inner sidewall of the embedded groove (404) is equipped with a shielding seat (407), the two ends of the I-shaped connecting rod (406) are connected to the valve plate (402) and the reinforcing valve plate (403) by springs (405), the two reinforcing valve plates (403) are equipped with tapered ribs (408) on the side away from the valve plate (402), and the inner sidewall of the lower valve seat (7) is equipped with a rib retainer (701) corresponding to the position of the tapered rib (408).

2. A valve-in-valve gate valve according to claim 1, characterized in that A bottom groove (702) is installed below the valve plate (402) on the inner side wall of the lower valve seat (7), and flanges (3) are installed at both ends of the lower valve seat (7).

3. A valve plate gate valve according to claim 1, characterized in that, A rotating handle (5) is installed on the outer side of the upper end of the screw (4), and a meshing seat (6) is provided on the upper end of the upper valve seat (2) located on the outer side of the screw (4).

4. A valve-in-valve gate valve according to claim 1, wherein, The spring (405) is fixedly connected to the I-shaped connecting rod (406), the tapered rib (408) is fixedly connected to the reinforcing valve plate (403), and a water-blocking pad (201) is installed inside the upper valve seat (2).

5. A valve-in-valve gate valve according to claim 1, wherein, A water baffle (401) is installed above the valve plate (402) on the outside of the screw (4).

6. A valve-in-valve gate valve according to claim 2, wherein, The valve plate (402) is engaged with the bottom slot (702).

7. A valve plate gate valve according to claim 1, characterized in that, The rib pad (701) is fixedly connected to the lower valve seat (7).

8. A valve plate gate valve according to claim 3, characterized in that, The screw (4) is engaged and rotatably connected to the engagement seat (6).

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