Low-resistance gate valve

Abstract

The utility model relates to the technical field of gate valves, and discloses a low-resistance gate valve which comprises a gate valve body, a pipeline and a shell, the end portion of the gate valve body is fixedly connected with a connecting block, the inner sides of the two ends of the connecting block are respectively provided with a clamping assembly, the two ends of the pipeline are respectively provided with an installing assembly, and the inner side of the pipeline is provided with a filtering assembly. A caliber size adjusting assembly is arranged on the inner side of the shell; the caliber size adjusting assembly comprises electric push rods, and the two electric push rods are fixedly connected to the inner sides of the two ends of the shell. According to the utility model, the electric push rod drives the sliding block I and the sliding block II to slide on the inner side of the shell, so that the diameter of fluid passing through the pipeline can be flexibly adjusted according to the actual flow demand and working condition. When the flow is large, the caliber is increased to reduce the flow velocity of fluid and reduce energy loss; when the flow is small, the caliber is reduced to improve the flow speed of fluid and prevent the fluid from forming low-speed vortex.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, and in particular to a low-resistance gate valve. Background Technology

[0002] A low-resistance gate valve is a type of valve used in fluid transport systems with the core design objective of reducing fluid flow resistance. Through optimization of its structure, flow path, and materials, it significantly reduces energy loss during fluid flow.

[0003] A search revealed Chinese Patent Publication No. CN202927107U, which discloses a gate valve comprising: a gate valve body having an internal thread at one end and a groove at its bottom; a gate valve neck having an external thread and a flange, wherein the external thread engages with the internal thread of the gate valve body; a plug placed in the groove; a sheet gasket disposed on the upper surface of the plug; and a gate valve rotating shaft having one end passing through the gate valve neck and extending into and fixed within the plug.

[0004] While the aforementioned technical solutions achieve low resistance by connecting to different types of external pipelines through threaded installation, they still lack the ability to adjust the valve diameter according to varying flow requirements and operating conditions. In practical applications, when the system flow rate changes, fixed-diameter gate valves cannot flexibly adapt to these changes, leading to excessively high or low fluid velocities and affecting the normal operation of the system. Therefore, a low-resistance gate valve is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a low-resistance gate valve, which aims to improve the problem that the diameter cannot be adjusted according to different flow requirements in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A low-resistance gate valve includes a gate valve body, a pipeline, and a housing. A connecting block is fixedly connected to the end of the gate valve body. A snap-fit ​​component is provided on the inner side of both ends of the connecting block. An installation component is provided on both ends of the pipeline. A filter component is provided on the inner side of the pipeline. A diameter adjustment component is provided on the inner side of the housing.

[0008] The aperture adjustment assembly includes an electric push rod, two of which are fixedly connected to the inner sides of both ends of the housing. Multiple sliders are slidably connected to the inner side of the housing. Slider 2 is fixedly connected to the outer side of the ends of the multiple sliders. The ends of the two electric push rods are fixedly connected to the inner sides of the two sliders.

[0009] As a further description of the above technical solution:

[0010] The filtration assembly includes a filter canister, which is fixedly connected to the inside of the pipe. Multiple snap-fit ​​rings are rotatably connected to the inside of the filter canister, and filter screens are fixedly connected to the inside of each of the multiple snap-fit ​​rings.

[0011] As a further description of the above technical solution:

[0012] The snap-fit ​​assembly includes a snap-fit ​​rod, the outer side of which is slidably connected to the inner side of the end of the connecting block. Both ends of the inner side of the connecting block are fixedly connected to springs. A connecting plate is fixedly connected to the outer side of the middle part of the snap-fit ​​rod. The ends of the two springs are fixedly connected to the inner sides of both ends of the connecting plate. A connecting ring is fixedly connected to the end of the snap-fit ​​rod.

[0013] As a further description of the above technical solution:

[0014] The mounting assembly includes a mounting plate, two mounting plates are respectively fixedly connected to the outer side of the end of the pipe and the valve body of the gate valve, and multiple fixing bolts are installed on the inner side of each of the two mounting plates;

[0015] As a further description of the above technical solution:

[0016] A connecting rod is rotatably connected to the inner side of the middle of the connecting block, and a limit block is fixedly connected to the outer side of the connecting rod. The ends of the two clamping rods are slidably connected to the inner side of the limit block.

[0017] As a further description of the above technical solution:

[0018] Multiple fixing blocks are fixedly connected to the outer sides of both ends of the two housings, and the ends of the multiple fixing blocks are fixedly connected to the outer side of the fixing disk. Multiple sliders are slidably connected to pipes on both sides, and the multiple pipes are fixedly connected to the outer side of the multiple fixing disks.

[0019] As a further description of the above technical solution:

[0020] A gate valve block is fixedly connected to the bottom of the connecting rod, and the gate valve block is rotatably connected to the inner side of the gate valve body;

[0021] As a further description of the above technical solution:

[0022] A turntable is fixedly connected to the end of the gate valve body.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the sliding of slider one and slider two within the housing via an electric push rod allows for flexible adjustment of the diameter of the fluid passage within the pipe according to actual flow requirements and operating conditions. When the flow rate is high, increasing the diameter reduces the fluid velocity and energy loss; when the flow rate is low, decreasing the diameter increases the fluid velocity and prevents the formation of low-speed eddies. This ensures that the fluid passes through the gate valve at appropriate flow rates and pressures under different conditions, improving the gate valve's adaptability to various operating conditions.

[0025] 2. In this utility model, the structure of the clamping rod, spring, connecting plate, connecting ring, and limiting block enables initial clamping and positioning through simple operation during the installation of gate valves and pipelines. The operator only needs to apply external force to the connecting ring to overcome the spring force and allow the clamping rod to slide, which, in conjunction with the limiting block, completes the positioning, greatly improving installation efficiency and reducing time and labor costs during the installation process. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a low-resistance gate valve proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the housing structure of a low-resistance gate valve proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the slider two of a low-resistance gate valve proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the gate block of a low-resistance gate valve proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the filter screen of a low-resistance gate valve proposed in this utility model.

[0031] Legend:

[0032] 1. Gate valve body; 2. Connecting block; 3. Turntable; 4. Fixed plate; 5. Pipeline; 6. Housing; 7. Fixed block; 8. Electric push rod; 9. Slider one; 10. Slider two; 11. Limit block; 12. Clamping rod; 13. Spring; 14. Connecting plate; 15. Connecting ring; 16. Gate valve block; 17. Clamping ring; 18. Filter screen; 19. Filter tank; 20. Connecting rod; 21. Fixing bolt. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model is provided: a low-resistance gate valve, including a gate valve body 1, a pipe 5 and a housing 6. A connecting block 2 is fixedly connected to the end of the gate valve body 1. A snap-fit ​​component is provided on the inner side of both ends of the connecting block 2. An installation component is provided on both ends of the pipe 5. A filter component is provided on the inner side of the pipe 5. A diameter adjustment component is provided on the inner side of the housing 6.

[0035] The diameter adjustment assembly includes two electric actuators 8, each fixedly connected to the inner sides of both ends of the housing 6. Multiple sliders 9 are slidably connected to the inner side of the housing 6, and sliders 10 are fixedly connected to the outer sides of the ends of each slider 9. The ends of the two electric actuators 8 are fixedly connected to the inner sides of the two sliders 9. When the electric actuators 8 extend or retract, they push the sliders 9 to slide inside the housing 6. The sliding of the sliders 9 causes the sliders 10 to move along the pipe 5. The coordinated movement of the multiple sliders 10 changes the diameter of the fluid passing through the pipe 5 to adapt to different flow requirements and operating conditions.

[0036] Reference Figure 1 and Figure 5 The filter assembly includes a filter canister 19, which is fixedly connected to the inside of the pipe 5. Multiple snap-fit ​​rings 17 are rotatably connected to the inside of the filter canister 19, and filter screens 18 are fixedly connected to the inside of each snap-fit ​​ring 17. When fluid passes through the filter screen 18, impurities are intercepted, thus filtering the fluid. Over time, if the filter screen 18 needs cleaning or replacement, the snap-fit ​​rings 17 can be rotated to adjust the filter screen 18 to a convenient position for disassembly.

[0037] Reference Figure 1 and Figure 4The locking assembly includes a locking rod 12, which is slidably connected to the inner end of a connecting block 2. Springs 13 are fixedly connected to both ends of the inner side of the connecting block 2. A connecting plate 14 is fixedly connected to the outer side of the middle of the locking rod 12. The ends of the two springs 13 are fixedly connected to the inner ends of the connecting plate 14. A connecting ring 15 is fixedly connected to the end of the locking rod 12. When connecting the gate valve body 1 and the pipe 5, pulling the connecting ring 15 causes the locking rod 12 to slide within the inner end of the connecting block 2 under the elastic force of the springs 13. Simultaneously, pulling the locking rod 12 allows adjustment of the relative position of the gate valve body 1 and the pipe 5. Releasing the connecting ring 15 allows the locking rod 12 to quickly reset, at which point the gate valve body 1 and the pipe 5 can be initially positioned.

[0038] Reference Figure 1 and Figure 5 The installation assembly includes two mounting plates 4, which are respectively fixedly connected to the outer ends of the pipe 5 and the gate valve body 1. Multiple fixing bolts 21 are installed on the inner sides of each mounting plate 4. The mounting plates 4 are installed on the outer ends of the pipe 5 and the gate valve body 1. The fixing bolts 21 are installed on the inner sides of the two mounting plates 4 and tightened to securely connect the gate valve body 1 and the pipe 5 together, ensuring the sealing and stability of the connection.

[0039] Reference Figure 1 , Figure 4 and Figure 5 A connecting rod 20 is rotatably connected to the inner side of the middle of the connecting block 2, and a limit block 11 is fixedly connected to the outer side of the connecting rod 20. The ends of the two locking rods 12 are slidably connected to the inner side of the limit block 11. A gate valve block 16 is fixedly connected to the bottom of the connecting rod 20, and the gate valve block 16 is rotatably connected to the inner side of the gate valve body 1. A turntable 3 is fixedly connected to the end of the gate valve body 1. The operator rotates the turntable 3 at the end of the gate valve body 1, and by controlling the rotation angle of the turntable 3, the position of the gate valve block 16 can be changed, thereby realizing the opening and closing of the gate valve and the regulation of the fluid flow. When the gate valve block 16 is fully open, the fluid can pass through the gate valve with low resistance; when the gate valve block 16 is closed, it can stop the fluid flow. Multiple fixing blocks 7 are fixedly connected to the outer sides of both ends of the two housings 6, and the ends of the multiple fixing blocks 7 are fixedly connected to the outer side of the fixing disc 4. Multiple sliders 10 are slidably connected to both sides of the multiple pipes 5, and the multiple pipes 5 are fixedly connected to the outer side of the multiple fixing discs 4. The fixing block 7 connects the housing 6 to the fixing plate 4, providing a stable support structure for the connection between the gate valve and the pipeline 5, and ensuring the stability of the gate valve installation in the pipeline system.

[0040] Working principle: When the electric actuator 8 extends or retracts, it pushes slider 9 to slide within the housing 6, which in turn drives slider 10 to slide on the pipe 5. Through the coordinated movement of multiple sliders 10, the diameter of the fluid passage through pipe 5 can be changed. Adjusting the pipe 5 diameter according to actual flow requirements and operating conditions allows the fluid to pass through the gate valve at a suitable flow rate and pressure under different circumstances, reducing fluid resistance at the gate valve.

[0041] When the connecting ring 15 is pulled inward or outward, the locking rod 12 will slide within the connecting block 2 under the elastic force of the spring 13. The limiting block 11 on the connecting rod 20, which is rotatably connected to the inner side of the middle of the connecting block 2, can limit the end of the locking rod 12. With this structure, the locking rod 12 and the limiting block 11 can be used to achieve initial locking and positioning of the components, preventing the impact of water flow from causing the gate valve block 16 to rotate.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-resistance gate valve, comprising a gate valve body (1), a pipeline (5), and a housing (6), characterized in that: The valve body (1) of the gate valve is fixedly connected to a connecting block (2) at one end. Both ends of the connecting block (2) are provided with snap-fit ​​components. Both ends of the pipe (5) are provided with installation components. The pipe (5) is provided with a filter component inside. The housing (6) is provided with a diameter adjustment component inside. The aperture size adjustment assembly includes an electric push rod (8), two electric push rods (8) are fixedly connected to the inner sides of both ends of the housing (6), a plurality of sliders (9) are slidably connected to the inner side of the housing (6), sliders (10) are fixedly connected to the outer sides of the ends of the plurality of sliders (9), and the ends of the two electric push rods (8) are fixedly connected to the inner sides of the two sliders (9).

2. The low-resistance gate valve according to claim 1, characterized in that: The filter assembly includes a filter canister (19), which is fixedly connected to the inside of the pipe (5). Multiple snap rings (17) are rotatably connected to the inside of the filter canister (19), and filter screens (18) are fixedly connected to the inside of each of the multiple snap rings (17).

3. A low-resistance gate valve according to claim 1, characterized in that: The snap-fit ​​assembly includes a snap-fit ​​rod (12), the snap-fit ​​rod (12) is slidably connected to the inner side of the end of the connecting block (2), the inner ends of the connecting block (2) are fixedly connected to springs (13), the outer side of the middle part of the snap-fit ​​rod (12) is fixedly connected to a connecting plate (14), the ends of the two springs (13) are fixedly connected to the inner sides of the two ends of the connecting plate (14), and the end of the snap-fit ​​rod (12) is fixedly connected to a connecting ring (15).

4. A low-resistance gate valve according to claim 1, characterized in that: The installation assembly includes a fixing plate (4), two fixing plates (4) are respectively fixedly connected to the outer side of the end of the pipe (5) and the gate valve body (1), and multiple fixing bolts (21) are installed on the inner side of the two fixing plates (4).

5. A low-resistance gate valve according to claim 3, characterized in that: The connecting block (2) is rotatably connected to the inner side of the middle part of the connecting block (2), and the outer side of the connecting rod (20) is fixedly connected to the limiting block (11). The ends of the two clamps (12) are slidably connected to the inner side of the limiting block (11).

6. A low-resistance gate valve according to claim 1, characterized in that: Multiple fixing blocks (7) are fixedly connected to the outer sides of both ends of the two housings (6), and the ends of the multiple fixing blocks (7) are fixedly connected to the outer side of the fixing disk (4). Multiple sliders (10) are slidably connected to pipes (5) on both sides, and the multiple pipes (5) are fixedly connected to the outer side of the multiple fixing disks (4).

7. A low-resistance gate valve according to claim 5, characterized in that: The bottom of the connecting rod (20) is fixedly connected to a gate valve block (16), which is rotatably connected to the inside of the gate valve body (1).

8. A low-resistance gate valve according to claim 1, characterized in that: A turntable (3) is fixedly connected to the end of the gate valve body (1).

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