Gate valve with double floating valve seats

Abstract

The utility model discloses a gate valve with double floating valve seats, and relates to the technical field of valves. The gate valve comprises a gate valve body and an outer connecting pipe, first connecting pipes are symmetrically and fixedly connected to the two sides of the gate valve body, limiting grooves are symmetrically formed in the center of the side, close to the first connecting pipes, of the outer ring of the outer connecting pipe, and limiting inserting shafts are symmetrically inserted in the center of the side, away from the gate valve body, of the outer ring of the first connecting pipes in a sliding mode; the limiting inserting shaft is matched with the limiting groove, and the side end, away from the center of the first connecting pipe, of the limiting inserting shaft is fixedly connected with a circular plate; by pushing the auxiliary push ring and under the mutual cooperation of the annular sliding cover, the connecting plate, the first spring, the second spring, the inclined table, the limiting inserting shaft and the limiting groove, the limiting inserting shaft is clamped in the limiting groove, and therefore the problem that when the gate valve connecting pipe is connected with a water pipeline, a flange, a bolt and a nut are mostly adopted to be matched, and the connecting efficiency is high is solved. And installation and disassembly are tedious and inconvenient.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a gate valve with double floating seats. Background Technology

[0002] In modern industrial fluid transport systems, gate valves, as key components for controlling fluid flow, are widely used in petroleum, chemical, power, water supply and drainage and other fields. In particular, gate valves with double floating seats play an important role in fluid control under complex conditions due to their advantages such as bidirectional sealing, adaptability to high pressure differential conditions and insensitivity to medium flow direction. In addition, gate valves with double floating seats are generally suitable for low-pressure applications, such as water supply projects.

[0003] Currently, when connecting gate valves with double floating seats to water supply pipelines, most use flanges with bolts and nuts for fastening. This requires precise alignment of the bolt holes during installation, making the process cumbersome, especially in limited workspaces where installing and disassembling long bolts is inconvenient. Furthermore, some gate valves are connected to pipelines by welding. While welding offers high strength and sealing, this is a permanent connection. Once installed, if the gate valve malfunctions and requires repair or replacement, it must be disassembled using destructive methods such as cutting. This is not only difficult to operate but also damages the pipeline, increasing maintenance costs and time. To address these issues, the inventor proposes a gate valve with double floating seats to solve these problems. Utility Model Content

[0004] To address the problem that gate valve connecting pipes are mostly connected to water pipelines using flanges, bolts, and nuts, which makes installation and disassembly cumbersome and inconvenient, the purpose of this utility model is to provide a gate valve with double floating seats.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a gate valve with double floating valve seats, comprising a gate valve body and an external connecting pipe, wherein a connecting pipe is symmetrically fixedly connected to both sides of the gate valve body, and a limiting groove is symmetrically opened at the center of the outer ring of the external connecting pipe near the center of the connecting pipe, and a limiting insert shaft is symmetrically slidably inserted at the center of the outer ring of the connecting pipe away from the gate valve body, and the limiting insert shaft is adapted to the limiting groove, and a circular plate is fixedly connected to the end of the limiting insert shaft away from the center of the connecting pipe, and a spring is fixedly connected to the end of the circular plate near the center of the connecting pipe, and the other end of the spring is fixedly connected to the connecting pipe, and the spring is sleeved on the outer ring of the limiting insert shaft.

[0006] Preferably, a sealing ring is fixedly connected to the outer ring of the external connecting pipe on the side near the gate valve body, and an annular sliding cover is slidably sleeved on the outer ring of the connecting pipe near the limiting insert shaft.

[0007] Preferably, the inner ring of the annular sliding cover is symmetrically fixedly connected with inclined platforms near the center of the two circular plates, and the inclined platforms are at the same level as the circular plates. A ball bearing is provided at the center of the side end of the circular plate near the inclined platform.

[0008] Preferably, an annular mounting cover is fixedly connected to the outer ring of the connecting pipe near the gate valve body, and an auxiliary push ring is fixedly connected to the side of the annular sliding cover away from the gate valve body.

[0009] Preferably, a guide telescopic rod is symmetrically fixedly connected to the center of the inner wall of the annular mounting cover near the gate valve body. A connecting plate is fixedly connected to the side end of the annular sliding cover near the guide telescopic rod, and the side end of the guide telescopic rod is fixedly connected to the connecting plate. A spring is fixedly connected to the side wall of the annular mounting cover and sleeved on the outer ring of the guide telescopic rod, and the other end of the spring is fixedly connected to the connecting plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] In this invention, by pushing the auxiliary push ring, and with the cooperation of the annular sliding cover, the connecting plate, the spring one, the spring two, the inclined platform, the limiting insert shaft, and the limiting groove, the limiting insert shaft is locked in the limiting groove. This solves the problem that when the gate valve connecting pipe is connected to the water pipe, most of them use flanges, bolts and nuts, which makes the installation and disassembly cumbersome and inconvenient. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. 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.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the connecting pipe structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the external connecting pipe structure of this utility model.

[0016] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0017] Figure 5 This utility model Figure 2 Enlarged structural diagram at point B.

[0018] In the diagram: 1. Gate valve body; 11. Connecting pipe one; 2. External connecting pipe; 21. Sealing ring; 22. Limiting groove; 3. Annular mounting cover; 31. Annular sliding cover; 32. Connecting plate; 33. Guide telescopic rod; 34. Spring one; 35. Limiting insert shaft; 36. Circular plate; 37. Ball bearing; 38. Spring two; 39. Inclined platform; 4. Auxiliary push ring. Detailed Implementation

[0019] 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.

[0020] Example: Figure 1-5 As shown, this utility model provides a technical solution: a gate valve with double floating seats, including a gate valve body 1 and an external connecting pipe 2. Connecting pipes 11 are symmetrically fixedly connected to both sides of the gate valve body 1. Limiting grooves 22 are symmetrically formed at the center of the outer circumference of the external connecting pipe 2, near the center of the side closest to the connecting pipe 11. The limiting grooves 22 are designed to cooperate with limiting shafts 35 to limit the movement of the external connecting pipe 2. The limiting grooves 22 and the limiting shafts 35 are at the same level. The limiting shafts 35 are symmetrically slidably inserted at the center of the outer circumference of the connecting pipe 11, away from the center of the side furthest from the gate valve body 1. The limiting shaft 35 is adapted to the limiting groove 22. A circular plate 36 is fixedly connected to the end of the limiting shaft 35 away from the center of the connecting tube 11. The circular plate 36 is set to cooperate with the spring 2 38 to realize the effect of the limiting shaft 35 being inserted into the limiting groove 22 and resetting. A spring 2 38 is fixedly connected to the end of the circular plate 36 near the center of the connecting tube 11, and the other end of the spring 2 38 is fixedly connected to the connecting tube 11. The spring 2 38 is sleeved on the outer ring of the limiting shaft 35. There is a certain fitting gap between the limiting shaft 35 and the connecting tube 11 to ensure that it can slide flexibly.

[0021] A sealing ring 21 is fixedly connected to the outer ring of the external connecting pipe 2 on the side close to the gate valve body 1.

[0022] By adopting the above technical solution, the sealing ring 21 is made of rubber or silicone, which can effectively prevent media leakage.

[0023] An annular sliding cover 31 is provided on the outer ring of the connecting pipe 11 and near the limiting insert shaft 35.

[0024] By adopting the above technical solution, the annular sliding cover 31 is fitted and slides on the outer ring of the connecting pipe 11, which can drive the inclined platform 39 to slide horizontally.

[0025] An inclined platform 39 is symmetrically fixedly connected to the inner ring of the annular sliding cover 31 near the center of the two circular plates 36, and the inclined platform 39 and the circular plates 36 are at the same level.

[0026] By adopting the above technical solution, the inclined platform 39 is set so that it can drive the limiting shaft 35 to complete the work of locking in the limiting groove 22 when moving.

[0027] A ball bearing 37 is provided at the center of one end of the circular plate 36 near the inclined platform 39.

[0028] By adopting the above technical solution, a ball bearing 37 is set on the side of the circular plate 36 away from the center of the connecting pipe 11, so as to cooperate with the inclined platform 39 and the spring 2 38 to drive the limit insert shaft 35 to rise and fall.

[0029] An annular mounting cover 3 is fixedly connected to the outer ring of the connecting pipe 11 and near the gate valve body 1. An auxiliary push ring 4 is fixedly connected to the side of the annular sliding cover 31 away from the gate valve body 1.

[0030] By adopting the above technical solution, an auxiliary push ring 4 is set on the side of the annular sliding cover 31 to facilitate the horizontal movement of the annular sliding cover 31, and an annular mounting cover 3 is set to facilitate the installation and fixing of the guide telescopic rod 33 and spring 34.

[0031] A guide telescopic rod 33 is symmetrically fixedly connected to the center of the inner wall of the annular mounting cover 3 near the gate valve body 1. A connecting plate 32 is fixedly connected to the side end of the annular sliding cover 31 near the guide telescopic rod 33, and the side end of the guide telescopic rod 33 is fixedly connected to the connecting plate 32.

[0032] By adopting the above technical solution, a connecting plate 32 is provided on the side of the annular sliding cover 31 in order to cooperate with the guide telescopic rod 33 and the spring 34.

[0033] A spring 34 is fixedly connected to the side wall of the annular mounting cover 3 and sleeved on the outer ring of the guide telescopic rod 33, and the other end of the spring 34 is fixedly connected to the connecting plate 32.

[0034] By adopting the above technical solution, the spring 34 is set in order to restore the effect of the annular sliding cover 31, so that it can drive the inclined platform 39 to move back and forth.

[0035] Working principle: When the external connecting pipe 2 needs to be connected, the auxiliary push ring 4 is pushed towards the gate valve body 1, thereby causing the fixedly connected annular sliding cover 31 to drive the two connecting plates 32 to squeeze the spring 34. This allows the inclined platform 39 to move towards the gate valve body 1 to release the lifting work of the limit insert shaft 35. At this time, the limit insert shaft 35 will be reset to the initial position under the action of the spring 38.

[0036] Then, the external connecting pipe 2 can be inserted into the connecting pipe 11. Once the limiting groove 22 and the limiting insert shaft 35 are at the same level, the force on the auxiliary push ring 4 is released. This allows the spring 34 to be pushed by the guide telescopic rod 33 to move the connecting plate 32 and the annular sliding cover 31 away from the gate valve body 1. This causes the inclined platform 39 to push the limiting insert shaft 35 towards the center of the connecting pipe 11, thus achieving the effect of being locked in the limiting groove 22. The sealing ring 21 can effectively prevent the leakage of the medium.

[0037] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A gate valve with double floating valve seat, comprising a gate valve body (1) and an outer connecting pipe (2), characterized in that: The gate valve body (1) is symmetrically fixedly connected to two sides of the connecting pipe 1 (11). The outer ring of the outer connecting pipe (2) is symmetrically provided with a limiting groove (22) at the center of the side of the connecting pipe 1 (11) and the side of the connecting pipe 1 (11) away from the gate valve body (1). A limiting insert shaft (35) is symmetrically slidably inserted at the center of the side of the connecting pipe 1 (11) away from the gate valve body (1). The limiting insert shaft (35) is adapted to the limiting groove (22). A circular plate (36) is fixedly connected to the side of the limiting insert shaft (35) away from the center of the connecting pipe 1 (11). A spring 2 (38) is fixedly connected to the side of the circular plate (36) near the center of the connecting pipe 1 (11). The other end of the spring 2 (38) is fixedly connected to the connecting pipe 1 (11). The spring 2 (38) is sleeved on the outer ring of the limiting insert shaft (35).

2. A gate valve having dual floating valve seats as defined in claim 1, wherein, A sealing ring (21) is fixedly connected to the outer ring of the external connecting pipe (2) on the side close to the gate valve body (1).

3. A gate valve having dual floating valve seats as defined in claim 1 wherein, The connecting pipe (11) is slidably fitted with an annular sliding cover (31) on its outer ring and near the limiting insert shaft (35).

4. A gate valve having dual floating valve seats as defined in claim 3 wherein, An inclined platform (39) is symmetrically fixedly connected to the inner ring of the annular sliding cover (31) and near the center of the two circular plates (36), and the inclined platform (39) and the circular plates (36) are at the same level.

5. A gate valve having dual floating valve seats as defined in claim 4 wherein, The circular plate (36) has a ball bearing (37) at the center of one end near the inclined platform (39).

6. A gate valve having dual floating valve seats as defined in claim 3 wherein, An annular mounting cover (3) is fixedly connected to the outer ring of the connecting pipe (11) and near the gate valve body (1). An auxiliary push ring (4) is fixedly connected to the side of the annular sliding cover (31) away from the gate valve body (1).

7. A gate valve having dual floating valve seats as defined in claim 6 wherein, The annular mounting cover (3) has a guide telescopic rod (33) symmetrically fixedly connected at the center of the inner wall of one side near the gate valve body (1). The annular sliding cover (31) has a connecting plate (32) fixedly connected at the side end near the guide telescopic rod (33), and the side end of the guide telescopic rod (33) is fixedly connected to the connecting plate (32).

8. A gate valve having dual floating valve seats as defined in claim 7 wherein, The annular mounting cover (3) is fixedly connected to a spring (34) on its side wall and sleeved on the outer ring of the guide telescopic rod (33), and the other end of the spring (34) is fixedly connected to the connecting plate (32).

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