Gate valve

Abstract

According to the technical scheme, the gate valve is characterized by comprising a valve body, a water inlet end and a water outlet end, a buffer seat is detachably connected to the water inlet end, a first buffer plate and a second buffer plate are arranged in the buffer seat, a plurality of sets of first buffer holes are formed in the first buffer plate, and a plurality of sets of second buffer holes are formed in the second buffer plate; the first buffer holes and the second buffer holes are arranged in a staggered manner; a plurality of sets of connecting blocks are arranged on the outer side of the first buffer plate and the outer side of the second buffer plate and distributed in the circumferential direction of the first buffer plate and the second buffer plate, a water passing gap is formed between every two connecting blocks, the gate valve can play a role in buffering fluid in a pipeline, and the service life of the valve is prolonged.

Description

Technical Field

[0001] The utility model relates to a valve, more specifically, it relates to a gate valve. Background Art

[0002] The gate valve controls the flow of the medium by raising and lowering the gate. The gate is a key component of the valve, usually made of cast iron, carbon steel, stainless steel and other materials. When the gate is raised, the medium can pass through the valve smoothly, achieving a fully open state. When the gate is lowered, a seal is formed between the gate and the valve seat, and the medium cannot pass through the valve, achieving a fully closed state.

[0003] In order to ensure the tightness of the gate valve, sealing rings are installed in many places inside the gate valve. However, the current gate valve has a simple structure. Due to the high flow rate of the fluid in the pipe, the fluid will impact the gate. If the instantaneous impact force is too large, it will directly cause damage to the gate or pipeline. If the fluid impacts the gate frequently for a long time, it will also cause the valve body to leak and cause the valve body to be loosely sealed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a gate valve which can buffer the fluid in the pipeline and increase the service life of the valve.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gate valve, comprising a valve body, a water inlet end and a water outlet end, the water inlet end being detachably connected with a buffer seat, a first buffer plate and a second buffer plate being arranged in the buffer seat, a plurality of groups of first buffer holes being arranged on the first buffer plate, a plurality of groups of second buffer holes being arranged on the second buffer plate, and the first buffer holes and the second buffer holes being arranged in a staggered manner;

[0006] Connecting blocks are arranged on the outer sides of the first buffer plate and the second buffer plate. The connecting blocks are provided in multiple groups and are arranged along the circumference of the first buffer plate and the second buffer plate. A water-passing gap is formed between the two connecting blocks.

[0007] In summary, the utility model has the following beneficial effects: when the fluid passes into the buffer seat, the fluid will be divided, one part will pass through the water gap, and the other part will pass through the buffer hole, but in the process of passing, it will abut against the first buffer plate and the second buffer plate respectively, thereby reducing the impact force and buffering the fluid. The design of the water gap can reduce the impact force on the first buffer plate and the second buffer plate, thereby increasing the service life of the buffer seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a three-dimensional structural schematic diagram of a gate valve;

[0009] Figure 2is a cross-sectional view of a buffer seat;

[0010] Figure 3 This is an enlarged schematic diagram of point A;

[0011] Figure 4 It is a schematic diagram of the three-dimensional structure of the first buffer plate and the second buffer plate.

[0012] Figure numerals: 1. valve body; 11. valve stem; 2. water inlet end; 3. water outlet end; 4. buffer seat; 41. limit ring; 42. connecting flange; 43. buffer groove; 44. buffer spring; 5. first buffer plate; 51. first buffer hole; 6. second buffer plate; 61. second buffer hole; 7. connecting block; 71. water gap; 72. buffer arc surface. DETAILED DESCRIPTION

[0013] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0014] Reference Figures 1 to 4 As shown, in order to achieve the above purpose, the utility model provides the following technical solutions: a gate valve, comprising a valve body 1, a water inlet end 2 and a water outlet end 3, the water inlet end 2 is detachably connected with a buffer seat 4, a first buffer plate 5 and a second buffer plate 6 are arranged in the buffer seat 4, a plurality of groups of first buffer holes 51 are arranged on the first buffer plate 5, a plurality of groups of second buffer holes 61 are arranged on the second buffer plate 6, and the first buffer holes 51 and the second buffer holes 61 are arranged in a staggered manner;

[0015] Connecting blocks 7 are disposed outside the first buffer plate 5 and the second buffer plate 6 . A plurality of connecting blocks 7 are provided and arranged along the circumference of the first buffer plate 5 and the second buffer plate 6 . A water-passing gap 71 is formed between the two connecting blocks 7 .

[0016] According to the design of the utility model, when the fluid passes into the buffer seat 4, the fluid will be divided, one part will pass through the water gap 71, and the other part will pass through the buffer hole, but both parts will abut against the first buffer plate 5 and the second buffer plate 6 respectively during the passing process, thereby reducing the impact force and buffering the fluid. The design of the water gap 71 can reduce the impact force on the first buffer plate 5 and the second buffer plate 6, thereby increasing the service life of the buffer seat 4.

[0017] Furthermore, the detachable design of the buffer seat 4 enables easy replacement without repairing the valve body 1, thereby improving the convenience of operation.

[0018] Furthermore, a third buffer plate may be provided, and two deceleration sections are formed between the three buffer plates. This structure may be selected according to the applicable scenario.

[0019] The second buffer plate 6 is disposed between the first buffer plate 5 and the water inlet end 2 , and the diameter of the second buffer hole 61 is consistent with the diameter of the first buffer hole 51 .

[0020] Either the diameter of the second buffer hole 61 is smaller than the diameter of the first buffer hole 51 , or the diameter of the first buffer hole is smaller than the diameter of the second buffer hole. Different diameter selections have corresponding advantages and are suitable for different fluids.

[0021] Limiting rings 41 are provided at both ends of the buffer seat 4 , and water passages are provided on the limiting rings 41 . The diameter of the water passages is smaller than the diameter of the first buffer plate 5 and the second buffer plate 6 .

[0022] The design of the limit ring 41 can limit the first buffer plate 5 and the second buffer plate 6. Even when the fluid impact force is too large and causes the first buffer plate 5 or the second buffer plate 6 to break, they will not move into the valve body 1 or the pipeline, thereby ensuring the safety of other equipment.

[0023] Both ends of the buffer seat 4 are provided with connecting flanges 42, and are connected to the pipeline and the water inlet end 2 through the connecting flanges 42. The design of this structure can be conveniently connected to the pipeline and the water inlet end 2.

[0024] The side of the connection block 7 away from the water inlet end 2 is provided with a buffer arc surface 72. The buffer arc surface 72 can buffer the fluid, thereby achieving a protective effect.

[0025] A gate plate and a valve stem 11 are arranged in the valve body 1, and the valve stem 11 is used to drive the gate plate to rise and fall.

[0026] A plurality of buffer grooves 43 are arranged in the buffer seat 4 , and the connecting block 7 is slidably connected in the buffer groove 43 . A buffer spring 44 is arranged in the buffer groove 43 , and the buffer spring 44 is arranged to abut against the connecting block 7 .

[0027] The connecting block 7 is arranged in an L-shaped structure.

[0028] like Figure 2 and Figure 3 As shown, the buffer groove 43 and the buffer spring 44 can play a protective role when the fluid impacts the buffer plate.

[0029] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A gate valve, comprising a valve body (1), a water inlet end (2) and a water outlet end (3), characterized in that: The water inlet end (2) is detachably connected to a buffer seat (4), a first buffer plate (5) and a second buffer plate (6) are arranged in the buffer seat (4), the first buffer plate (5) is provided with a plurality of groups of first buffer holes (51), the second buffer plate (6) is provided with a plurality of groups of second buffer holes (61), and the first buffer holes (51) and the second buffer holes (61) are arranged in a staggered manner; Connecting blocks (7) are arranged on the outer sides of the first buffer plate (5) and the second buffer plate (6); a plurality of connecting blocks (7) are arranged and arranged along the circumference of the first buffer plate (5) and the second buffer plate (6); and a water-passing gap (71) is formed between the two connecting blocks (7).

2. A gate valve according to claim 1, characterized in that: The second buffer plate (6) is arranged between the first buffer plate (5) and the water inlet end (2), and the diameter of the second buffer hole (61) is consistent with the diameter of the first buffer hole (51).

3. A gate valve according to claim 1, characterized in that: Limiting rings (41) are provided at both ends of the buffer seat (4), and water passages are provided on the limiting rings (41). The diameter of the water passages is smaller than the diameter of the first buffer plate (5) and the second buffer plate (6).

4. A gate valve according to claim 1, characterized in that: Both ends of the buffer seat (4) are provided with connecting flanges (42), and are connected to the pipeline and the water inlet end (2) through the connecting flanges (42).

5. A gate valve according to claim 1, characterized in that: A buffer arc surface (72) is provided on one side of the connection block (7) away from the water inlet end (2).

6. A gate valve according to any one of claims 1 to 5, characterized in that: A gate plate and a valve stem (11) are arranged in the valve body (1), and the valve stem (11) is used to drive the gate plate to rise and fall.

7. A gate valve according to any one of claims 1 to 5, characterized in that: A plurality of groups of buffer grooves (43) are arranged in the buffer seat (4), the connecting block (7) is slidably connected in the buffer groove (43), a buffer spring (44) is arranged in the buffer groove (43), and the buffer spring (44) is arranged in abutment with the connecting block (7).

8. A gate valve according to claim 7, characterized in that: The connecting block (7) is arranged in an L-shaped structure.

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