Gate valve

Abstract

The utility model provides a gate valve which comprises a valve body, a valve hole penetrating through the front side and the rear side of the valve body is formed in the valve body, a sliding groove is formed in the valve body, the sliding groove is formed in the vertical direction and penetrates through the upper side of the valve body, a gate capable of moving up and down is connected in the sliding groove, and the gate is arranged in the axial direction of the valve hole. The width of the sliding groove is larger than the thickness of the gate plate, protruding limiting parts are arranged on the rear side wall of the sliding groove, the limiting parts are arranged on the left side and the right side of the sliding groove, a plurality of limiting parts are arranged at intervals in the vertical direction, and the distance between the limiting parts and the sliding groove is equal to the thickness of the gate plate. The width of the sliding groove is larger than the thickness of the flashboard, so that the flashboard cannot be clamped even if silt enters the sliding groove, the flashboard is limited through the limiting part, and the flashboard is limited and fixed in the front-back direction.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a gate valve. Background Art

[0002] A canal gate valve is a valve device used to control the flow of water in a canal.

[0003] It is usually composed of a valve body, a gate disc, and other components. The valve body is the main body of the gate valve, providing a fluid passage. The gate disc is the key component that controls the flow of water, moving up and down to open and close the valve.

[0004] In the practical application of canal gate valves, sediment entering the slideway where the gate moves and becoming stuck is a common and difficult problem. The water flow in the canal often carries a large amount of sediment. During the closing or opening of the gate valve, the sediment easily enters the slideway with the water flow. This hinders the normal movement of the gate, making it impossible to open and close the gate valve smoothly, affecting water flow control, increasing the force required to operate the gate valve, and even causing damage or deformation of the valve stem. Long-term jamming may wear the slideway and gate disc, reducing the service life and sealing performance of the gate valve, and increasing maintenance costs. Utility Model Content

[0005] In view of the problems pointed out in the background technology, the present invention proposes a gate valve to solve the above technical problems.

[0006] The technical solution of the present utility model is achieved as follows:

[0007] A gate valve includes a valve body, wherein the valve body is provided with a valve hole running through the front and rear sides thereof, and the valve body is provided with a slide groove, which is arranged in the up and down directions and runs through the upper side of the valve body, and a gate plate that can move up and down is connected to the slide groove, and in the axial direction of the valve hole, the width of the slide groove is greater than the thickness of the gate plate, and a protruding limiting portion is provided on the rear side wall of the slide groove, and the limiting portion is arranged on the left and right sides of the slide groove, and multiple limiting portions are arranged at intervals in the up and down directions, and the distance between the limiting portion and the slide groove is equal to the thickness of the gate plate.

[0008] The present invention is further configured such that the limiting portion can be position-adjusted in the front-rear direction.

[0009] The utility model is further configured such that a threaded hole for connecting with the limiting portion is provided on the side wall of the valve body, and the limiting portion is threadedly connected with the threaded hole.

[0010] The present invention is further configured such that the limiting portion is a screw-shaped structure.

[0011] The utility model is further configured such that the lower end of the valve body is provided with a drain hole communicated with the bottom of the chute.

[0012] The utility model is further configured such that baffles are respectively provided on the left and right sides of the valve body, and in the front-to-back direction, the width of the baffles is greater than the width of the valve body.

[0013] The utility model is further configured such that a fixing plate is provided on the baffle.

[0014] The utility model is further configured such that a lifting hole is provided at the upper end of the gate plate.

[0015] By adopting the above technical solution, the beneficial effects of the utility model are:

[0016] The gate valve provided by the utility model has a chute width greater than the thickness of the gate plate, so that even if mud and sand enter the chute, the gate plate will not be stuck. Moreover, the limiting portion forms a restriction on the gate plate, so that the gate plate is restricted and fixed in the front and rear directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 It is a structural diagram of the present utility model.

[0019] Figure 2 It is an exploded schematic diagram of the present utility model.

[0020] Figure 3 It is a front side schematic diagram of the present invention.

[0021] Figure 4 For this utility model Figure 4 AA cross-sectional view.

[0022] Figure 5 For this utility model Figure 4 BB cross-sectional view. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Reference as follows Figure 1-5 The utility model is described as follows:

[0025] Example 1: A canal gate valve comprises a valve body 1. The valve body 1 is a vertically mounted plate-like structure adapted to canal installation environments and easily connected and secured to the canal's sidewalls. The valve body 1 is made of plastic, which imparts a degree of water and chemical resistance, maintaining good stability in canal environments and reducing the risk of rust and corrosion. The valve body 1 is provided with a valve hole 2 extending through its front and rear sides. The valve hole 2 ensures smooth water flow through the valve body 1, ensuring proper canal water transport. The valve body 1 is provided with a chute 3 extending vertically through the upper side of the valve body 1. A vertically movable gate plate 4 is connected within the chute 3. The vertical orientation of the chute 3 satisfies the gate plate 4's operational requirements, enabling vertical movement and precise control of the valve hole 2. The vertically movable gate plate 4 is simple and straightforward to operate. By adjusting the position of the gate plate 4 within the chute 3, the valve hole 2 can be easily opened and closed. The lifting hole 10 provides convenience for operating the gate plate 4, and is easy to lift and lower using tools or manually.

[0026] The chute 3 runs through the upper side of the valve body 1 to facilitate the installation and maintenance of the gate 4. The upper end of the gate 4 is provided with a lifting hole 10, and the gate 4 slides up and down in the chute 3 to open and close the valve hole 2.

[0027] In the canal system of agricultural irrigation, the gate valve can flexibly control the distribution of water flow according to the irrigation needs of different areas; in the canal of urban drainage, it can also effectively regulate the drainage volume to prevent flood disasters.

[0028] In the axial direction of the valve hole 2, the width of the chute 3 is greater than the thickness of the gate plate 4. When mud and sand enter the chute 3, sufficient space is reserved to prevent them from directly contacting and obstructing the gate plate 4. This reduces the risk of the gate plate 4 becoming stuck and ensures that the gate plate 4 can slide relatively smoothly up and down within the chute 3, achieving normal opening and closing operations of the valve hole 2. A protruding restricting portion 5 is provided on the rear sidewall of the chute 3. The restricting portions 5 are arranged on the left and right sides of the chute 3, and multiple restricting portions 5 are spaced apart in the vertical direction. The distance between the restricting portion 5 and the chute 3 is equal to the thickness of the gate plate 4. The restricting portions 5 restrict the gate plate, restricting and fixing it in the front-to-back direction. These restricting portions 5 primarily serve the following functions: Front-to-back restriction: Ensures that the gate plate 4 is firmly restrained and fixed in the front-to-back direction, preventing the gate plate 4 from shaking or shifting back and forth under the impact of water flow or other external forces, thereby maintaining accurate alignment and a good seal between the gate plate 4 and the valve hole 2. Enhanced stability: The spaced arrangement of multiple limiting parts 5 makes the limiting effect more uniform and stable, further improving the stability and reliability of the gate 4 during operation. Guaranteed sealing performance: By precisely limiting the position of the gate 4, it helps the gate 4 to fit tightly with the valve hole 2, improving the sealing effect and reducing the possibility of water leakage.

[0029] In actual canal operation, even if the water flow speed is fast or there is a sudden change in the water flow direction, the gate 4 can remain stable due to the presence of the restriction portion 5, ensuring that the normal function and sealing performance of the canal gate valve are not affected.

[0030] The restricting portion 5 is adjustable in the forward and backward directions. The side wall of the valve body 1 is provided with a threaded hole 6 for connecting to the restricting portion 5. The restricting portion 5 is threadedly connected to the threaded hole 6, and the restricting portion 5 has a screw-like structure. This adjustable design has the following significant advantages: Flexibility: The position of the restricting portion 5 can be flexibly adjusted according to actual needs and the wear of the gate plate 4, thereby maintaining a good restriction and fixation effect on the gate plate 4. Adaptability: It can adapt to the requirements for the position accuracy and stability of the gate plate 4 under different operating conditions. For example, when the water pressure in the canal changes, the operating state of the gate plate 4 can be optimized by fine-tuning the restricting portion 5. Ease of maintenance: If the gate plate 4 or valve body 1 wears out, resulting in a decrease in fit accuracy, there is no need to replace the entire valve body 1 or gate plate 4. Compensation can be achieved by adjusting the position of the restricting portion 5, reducing maintenance costs and workload. Improved sealing performance: By precisely adjusting the position of the restricting portion 5, the fit between the gate plate 4 and the valve hole 2 can be tightened, further improving sealing performance and reducing leakage.

[0031] If, after long-term use, the gate plate 4 is found to be slightly loose, resulting in a poor seal, the sealing problem can be resolved by simply twisting the restricting portion 5 forward to tighten the restriction on the gate plate 4. In summary, the adjustable design of the restricting portion 5 enhances the performance and maintainability of the canal gate valve, enabling it to better adapt to various working conditions and usage requirements.

[0032] When the limiting part 5 (screw) is tightened, it can form a very effective positioning and fixation for the gate plate 4. This positioning and fixing function has the following important significance: Enhanced stability: It ensures that the gate plate 4 will not be displaced due to the impact of water flow or other external forces during operation, thereby ensuring the stable operation of the canal gate valve. Sealing guarantee: It enables the gate plate 4 to accurately cooperate with the valve hole 2, maintain a good sealing state, effectively prevent water leakage, and improve the water supply efficiency of the canal system and the utilization rate of water resources. Reduce wear: Stable positioning and fixation can reduce unnecessary friction and collision between the gate plate 4 and the valve body 1, reduce the degree of wear of components, and extend the service life of the gate valve. Operational accuracy: It helps the operator to accurately control the position of the gate plate 4 and achieve precise adjustment and control of the water flow.

[0033] When the canal needs to maintain a specific flow rate or water level for a long time, the tightened limiting portion 5 can reliably fix the position of the gate plate 4 to avoid changes in water flow caused by the movement of the gate plate 4.

[0034] The lower end of the valve body 1 is provided with a drain hole 7 connected to the bottom of the chute 3. The silt that enters the bottom of the chute 3 can be discharged through the drain hole 7. The drain hole 7 can effectively discharge the silt that enters the bottom of the chute 3. In a canal environment, the accumulation of silt is a common problem. The drain hole 7 can prevent silt from accumulating at the bottom of the chute 3, thereby reducing the obstruction to the sliding of the gate plate 4. When the water flow in the canal carries a lot of silt, after a period of operation, the silt will gradually enter the chute 3. At this time, the drain hole 7 comes into play, and the silt can be discharged naturally from the drain hole 7, or the silt can be cleaned out of the drain hole 7 with the help of tools during maintenance.

[0035] Baffles 8 are provided on the left and right sides of the valve body 1. In the front-to-back direction, the width of the baffle 8 is greater than the width of the valve body 1. The functions of the baffle 8 are: Enhanced stability: It can provide a larger support area, so that the valve body 1 can be installed more firmly in the canal, and is not easily displaced or shaken by the impact of water flow or external factors. Protective function: It can effectively block the direct impact of debris or larger particles on both sides of the canal on the valve body 1, reducing the possibility of damage to the valve body 1. A fixing plate 9 is provided on the baffle 8, and the fixing plate 9 is connected to the side wall of the canal. The functions of the fixing plate 9 include: Fixing and positioning: ensuring that the baffle 8 and the valve body 1 can be accurately installed in the predetermined position of the canal, and maintaining the relative position of the gate valve and the canal stable. Force sharing: It can transfer the impact force of the water flow and other external forces on the valve body 1 to the side wall of the canal, reducing the burden on the valve body 1 itself and extending its service life.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gate valve, comprising a valve body (1), wherein the valve body (1) is provided with a valve hole (2) penetrating the front and rear sides thereof, and the valve body (1) is provided with a slide groove (3), wherein the slide groove (3) is arranged in the up-down direction and penetrating the upper side of the valve body (1), and a gate (4) that can move up and down is connected in the slide groove (3), characterized in that: In the axial direction of the valve hole (2), the width of the chute (3) is greater than the thickness of the gate (4), and a protruding limiting portion (5) is provided on the rear side wall of the chute (3). The limiting portion (5) is arranged on the left and right sides of the chute (3), and multiple limiting portions (5) are arranged at intervals in the upper and lower directions. The distance between the limiting portion (5) and the chute (3) is equal to the thickness of the gate (4); the limiting portion (5) can be adjusted in the front and rear directions.

2. A gate valve according to claim 1, characterized in that: A threaded hole (6) connected to the limiting portion (5) is provided on the side wall of the valve body (1), and the limiting portion (5) is threadedly connected to the threaded hole (6).

3. A gate valve according to claim 2, characterized in that: The limiting portion (5) is a screw-shaped structure.

4. The gate valve according to claim 1, characterized in that: The lower end of the valve body (1) is provided with a drain hole (7) which is in communication with the bottom of the chute (3).

5. The gate valve according to claim 1, characterized in that: Baffles (8) are respectively provided on the left and right sides of the valve body (1); in the front-to-back direction, the width of the baffles (8) is greater than the width of the valve body (1).

6. The gate valve according to claim 5, characterized in that: A fixing plate (9) is provided on the baffle (8).

7. The gate valve according to claim 1, characterized in that: The upper end of the gate plate (4) is provided with a lifting hole (10).

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