Gate valve

Abstract

According to the technical scheme, the gate valve is characterized by comprising a valve body, a valve rod and a gate plate, the valve body comprises an input end allowing fluid to enter and an output end allowing fluid to flow out, the gate plate is arranged in the valve body in a sliding mode, a limiting groove is formed between the input end and the output end, and an impurity removing piece is arranged in the limiting groove. A pushing part matched with fluid is arranged at one end of the impurity removing part, a slope part matched with the gate plate is arranged at the other end of the impurity removing part, and after the gate plate moves upwards, the fluid impacts the pushing part to enable the impurity removing part to move towards the output end along the limiting groove; according to the gate valve, impurity removal operation can be conducted on the position of the gate plate, impurity accumulation is avoided, and the leakproofness of the gate plate is guaranteed.

Description

Technical Field

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

[0002] A gate valve is a type of valve whose opening and closing parts (i.e., gate plates) move in a direction perpendicular to the medium flow direction (channel axis) to open and close the valve. The main function of a gate valve is to cut off the flow of the medium and is usually used for full open or full closed operations.

[0003] However, if the fluid in the pipeline carries impurities during the use of the gate valve, these impurities will accumulate between the pipeline wall and the gate. As the impurities increase, they will gather to form lumps. When the gate rises, some of the impurities will be discharged under the impact of the fluid, while other impurities will still block the gate's descending position, so that when the gate descends and closes, it cannot be sealed, affecting the sealing effect of the gate valve.

[0004] In order to remove these impurities, our company innovates the existing gate valve. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a gate valve, which can remove impurities from the gate position to avoid impurity accumulation and ensure the airtightness of the gate.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gate valve, comprising a valve body, a valve stem and a gate plate, wherein the valve body comprises an input end for fluid to enter and an output end for fluid to flow out, the gate plate is slidably arranged in the valve body, a limiting groove is arranged between the input end and the output end, a debris removal piece is arranged in the limiting groove, one end of the debris removal piece is provided with a pushing part cooperating with the fluid, and the other end is provided with an inclined part cooperating with the gate plate, when the gate plate moves upward, the fluid impacts the pushing part so that the debris removal piece moves along the limiting groove toward the output end;

[0007] The debris removing member is provided with a plurality of groups of obliquely arranged drainage holes.

[0008] In summary, the utility model has the following beneficial effects: the gate moves upward, the input end is connected with the output end, and the fluid flows. At this time, the fluid acts on the pushing part of the impurity remover, causing the impurity remover to slide along the limiting groove toward the output end, thereby scraping the original gate position, so that the impurities are separated from the pipe wall and discharged with the fluid.

[0009] The gate moves downward, the input end is separated from the output end, and the gate gradually abuts against the inclined surface during the downward movement, thereby pushing the debris removal piece to slide along the limit groove toward the input end, thereby forming a reset.

[0010] The inclined drain holes can guide the fluid to flow towards the contact position between the gate plate and the pipe wall, thereby flushing the impurities and improving the cleaning effect on the impurities. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the closed state of the gate valve;

[0012] Figure 2 It is a schematic structural diagram of the open state of the gate valve;

[0013] Figure 3 It is a schematic structural diagram of the impurity removal part;

[0014] Figure 4 It is a three-dimensional structural diagram of the gate valve.

[0015] Reference numerals in the drawings: 1, valve body; 11, input end; 12, output end; 2, valve stem; 3, gate plate; 4, limiting groove; 5, impurity removal part; 51, pushing part; 52, inclined surface part; 6, drain hole; 61, first through hole; 62, second through hole; 7, sliding hole; 71, sliding column; 72, return spring. Detailed Description of the Invention

[0016] The present invention will be further described in detail below with reference to the drawings and embodiments. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0017] Referring to Figures 1 to 4 As shown, to achieve the above object, the present invention provides the following technical solution: A gate valve includes a valve body 1, a valve stem 2 and a gate plate 3. The valve body 1 includes an input end 11 for fluid to enter and an output end 12 for fluid to flow out. The gate plate 3 is slidably arranged in the valve body 1. A limiting groove 4 is arranged between the input end 11 and the output end 12. An impurity removal part 5 is arranged in the limiting groove 4. One end of the impurity removal part 5 is provided with a pushing part 51 cooperating with the fluid, and the other end is provided with an inclined surface part 52 cooperating with the gate plate 3. When the gate plate 3 moves upward, the fluid impacts the pushing part 51 to make the impurity removal part 5 move along the limiting groove 4 towards the output end 12;

[0018] Several groups of inclined drain holes 6 are arranged on the impurity removal part 5.

[0019] The design of the present invention changes from Figure 1 state to Figure 2In the state, the gate 3 moves upward, the input end 11 is communicated with the output end 12, and the fluid flows. At this time, the fluid acts on the pushing part 51 of the impurity removing part 5, so that the impurity removing part 5 slides along the limiting groove 4 towards the output end 12, thereby scraping the original position of the gate 3, separating the impurities from the pipe wall, and discharging them along with the fluid.

[0020] From Figure 2 The state changes to Figure 1 In the state, the gate 3 moves downward, the input end 11 is separated from the output end 12, and the gate 3 gradually abuts against the inclined surface part 52 during the downward movement, thereby pushing the impurity removing part 5 to slide along the limiting groove 4 towards the input end 11, thus forming a reset.

[0021] The water inlet of the drain hole 6 is set at a position higher than the water outlet.

[0022] As Figure 3 shown, the inclined drain hole 6 can guide the fluid to flow towards the contact position between the gate 3 and the pipe wall, thereby flushing the impurities and improving the cleaning effect on the impurities.

[0023] The drain hole 6 includes a first through hole 61 and a second through hole 62. The first through hole 61 is arranged close to the input end 11, the second through hole 62 is arranged close to the output end 12, and the diameter size of the first through hole 61 is larger than that of the second through hole 62.

[0024] The design of this structure can accelerate the fluid velocity during the process of the fluid passing through the drain hole 6, thereby increasing the flushing force on the impurities and improving the cleaning effect.

[0025] A sliding hole 7 is arranged on the limiting groove 4, and a sliding column 71 which is slidably connected in the sliding hole 7 is arranged on the impurity removing part 5.

[0026] As Figure 3 shown, the design of this structure can play a guiding role during the sliding process of the impurity removing part 5.

[0027] A return spring 72 which cooperates with the sliding column 71 is arranged in the sliding hole 7.

[0028] The design of this return spring 72 can give a starting momentum to the impurity removing part 5 through the return spring 72 when the gate 3 moves upward, increasing the scraping force.

[0029] Furthermore, a stroke limiting structure is arranged between the sliding column 71 and the sliding hole 7. For example, grooves are formed on both sides of the sliding hole 7, and a limiting part is arranged on the sliding column 71. The limiting part slides in the grooves, and a stroke limiting effect is achieved through the limiting part during the sliding process of the impurity removing part 5.

[0030] The gate 3 is arranged in a disc-shaped structure.

[0031] As Figure 1 and 2 shown, the cross-section of the impurity removing part 5 is arranged in a right trapezoid structure. In addition, according to the usage requirements, the cross-section of the impurity removing part 5 can be arranged in a right triangle structure or a disc structure.

[0032] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A gate valve, comprising a valve body (1), a valve stem (2) and a gate plate (3), wherein the valve body (1) comprises an input end (11) for fluid to enter and an output end (12) for fluid to flow out, and the gate plate (3) is slidably disposed in the valve body (1), wherein: A limiting groove (4) is provided between the input end (11) and the output end (12), a debris removal piece (5) is provided in the limiting groove (4), one end of the debris removal piece (5) is provided with a pushing portion (51) cooperating with the fluid, and the other end of the debris removal piece (5) is provided with an inclined portion (52) cooperating with the gate plate (3), when the gate plate (3) moves upward, the fluid impacts the pushing portion (51) so that the debris removal piece (5) moves along the limiting groove (4) toward the output end (12); The debris removal member (5) is provided with a plurality of groups of obliquely arranged drainage holes (6).

2. A gate valve according to claim 1, characterized in that: The drainage hole (6) comprises a first through hole (61) and a second through hole (62); the first through hole (61) is arranged close to the input end (11), and the second through hole (62) is arranged close to the output end (12); the caliber of the first through hole (61) is larger than the caliber of the second through hole (62).

3. A gate valve according to claim 2, characterized in that: The water inlet of the drainage hole (6) is arranged at a position higher than the water outlet.

4. A gate valve according to claim 1, characterized in that: The limiting groove (4) is provided with a sliding hole (7), and the debris removing member (5) is provided with a sliding column (71) which is slidably connected to the sliding hole (7).

5. A gate valve according to claim 4, characterized in that: A return spring (72) cooperating with the sliding column (71) is arranged in the sliding hole (7).

6. A gate valve according to any one of claims 1 to 5, characterized in that: The gate plate (3) is arranged in a disc-shaped structure.

7. A gate valve according to any one of claims 1 to 5, characterized in that: The cross section of the debris removing member (5) is arranged in a right-angled trapezoidal structure.

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