Pipeline check valve

Abstract

The utility model relates to the technical field of check valves, in particular to a pipeline check valve which comprises a valve body, a limiting groove is formed in the valve body, a sliding groove is formed in the valve body and located below the limiting groove, a flow stopping plug is slidably connected into the sliding groove, and a flow measuring sensor is fixedly connected to the bottom of the flow stopping plug. The top of the flow stopping plug is fixedly connected with two connecting rods. The check valve has the advantages that when reverse flow is sensed by the flow measuring sensor, the first gear rotates to enable the first gear to be disengaged from the second gear, so that the flow stopping plug blocks the runner pipe, and when recovery is needed, workers need to manually mesh the second gear with the first gear, so that operators can directly control the state of the check valve; the flow direction of fluid is ensured to be correct and safe, for some key systems or applications with high safety requirements, the manual reset function can provide higher operation reliability and safety, and compared with a traditional device, the operation quality and the use efficiency are greatly improved.

Description

Technical Field

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

[0002] A pipeline check valve is a device used to control the unidirectional flow of fluid in a pipeline. Its main function is to prevent the fluid from flowing back or back, maintain the direction of the fluid in the pipeline, ensure the unidirectional flow of the fluid in the pipeline, prevent backflow, protect equipment and save energy. It plays an important role in various industrial, construction and civil pipeline systems;

[0003] After searching, a Chinese patent discloses a pipeline check valve (authorization announcement number CN218625614U) including a valve body, a multi-diameter connection mechanism is symmetrically provided at the front and rear ends of the valve body, the multi-diameter connection mechanism includes a first connection pipe, a second connection pipe and a third connection pipe, the front and rear ends of the valve body are respectively fixedly equipped with a load ring, the first connection pipe is fixedly equipped at the end of the load ring, the second connection pipe is slidably sleeved on the outside of the first connection pipe, the third connection pipe is slidably sleeved on the outside of the second connection pipe, and the first connection pipe, the second connection pipe and the third connection pipe are all provided with connecting threads on the inside, the first connection pipe and the second connection pipe are both fixedly equipped with a first anti-slip ring at the front end, and the second connection pipe and the third connection pipe are both provided with a second anti-slip ring matching the first anti-slip ring on the inside of the rear end. Although the above patent technology can achieve the connection and check effect between pipelines of different calibers by setting a multi-diameter connection mechanism, the same check valve can be adapted to pipelines of different calibers;

[0004] However, in the actual application of this patented technology, although the connection mechanism of the above-mentioned device can achieve the effect of connecting pipes of different diameters, the check valve of the above-mentioned device cannot be manually reset during use and can only be automatically opened or closed according to the pressure difference of the fluid. This means that when the pressure difference is not enough to drive the check valve to operate, the fluid may not be able to pass normally or cannot be completely closed, which will cause leakage or backflow of the fluid in the pipeline, affecting normal operation. Utility Model Content

[0005] In view of the problem in the prior art that the valve can only be automatically opened or closed according to the pressure difference of the fluid, the main purpose of the utility model is to provide a pipeline check valve.

[0006] The technical solution of the utility model is as follows: a pipeline check valve comprises a valve body, a limiting groove is provided inside the valve body, a sliding groove is provided inside the valve body and below the limiting groove, a flow stop plug is slidably connected inside the sliding groove, a flow measuring sensor is fixedly connected to the bottom of the flow stop plug, two connecting rods are fixedly connected to the top of the flow stop plug, a sliding block is slidably connected inside the limiting groove, the tops of the connecting rods extend to the inside of the limiting groove and are fixedly connected to the bottom of the sliding block, and a spring is sleeved outside the connecting rod and between the top of the inner wall of the sliding groove and the top of the flow stop plug.

[0007] Through the above technical solution, the flow measuring sensor can detect the flow of gas or liquid inside the valve body, the flow inlet can be completely blocked by the flow stop plug, and the flow stop plug can block the flow groove by fixing the sliding block and the connecting rod. When manually reset, the flow stop plug will compress the spring so that the flow stop plug will be at the top of the sliding groove.

[0008] As a preferred embodiment, an L-shaped plate is fixedly connected to the outer side of the valve body, a motor is fixedly connected to the outer side of the L-shaped plate, an output shaft of the motor passes through the L-shaped plate and is fixedly connected to a first gear, the first gear is provided with teeth at one quarter, a through groove is provided on the outer side of the valve body, a light rod is slidably connected to the inside of the through groove, one end of the light rod extends to the groove of the sliding block, and the end of the light rod away from the sliding block is fixedly connected to a second gear, the second gear is meshed with the teeth of the first gear at one quarter.

[0009] Through the above technical solution, when the valve body is in normal use, the second gear is in meshing state with the teeth at one quarter of the first gear. When the flow measuring sensor senses backflow, the motor will rotate half a circle, so that the light rod drives the second gear to disengage, thereby stopping the flow inside the valve body.

[0010] As a preferred embodiment, a flow groove is opened inside the valve body and at the bottom of the inner wall of the sliding groove. An inlet pipe is fixedly connected to the bottom of the valve body, one end of the inlet pipe extends to the inside of the flow groove. An outlet pipe is fixedly connected to the outside of the valve body, one end of the outlet pipe extends to the inside of the flow groove.

[0011] Through the above technical solution, the inlet pipe is connected to the external liquid or gas, and the outlet pipe is connected to the pipeline that needs to discharge gas or liquid.

[0012] As a preferred implementation, a sealing ring is provided on the outer side of the stopper, the stopper is used in conjunction with the flow groove, and an observation gauge is fixedly connected to the top of the valve body.

[0013] Through the above technical solution, the sealing between the stopper and the flow groove can be increased by the sealing ring, and the flow rate and flow rate can be clearly known by observing the meter.

[0014] As a preferred implementation, a mounting plate is fixedly connected to the bottom of the inlet pipe, and the mounting plate is made of rubber.

[0015] Through the above technical solution, the mounting plate is arranged at the bottom of the inlet pipe, which can fix the valve body and prevent the pipe from rubbing against the ground.

[0016] As a preferred implementation manner, the ends of the inlet pipe and the outlet pipe away from the valve body are both fixedly connected with flanges.

[0017] Through the above technical solution, most of the pipelines can be connected to the device through the flange.

[0018] As a preferred implementation, a controller is fixedly connected to the outer side of the valve body, and the flow sensor, the motor and the observation meter are all electrically connected to the controller.

[0019] Through the above technical solution, the controller controls the start and stop of the flow measuring sensor, the motor and the observation meter.

[0020] Compared with the prior art, the advantages and positive effects of the utility model are:

[0021] In the utility model, when the flow measuring sensor in the above-mentioned device senses backflow, the first gear rotates to disengage from the second gear, so that the light rod drives the sliding block to reset, so that the flow stop plug blocks the flow pipe. When recovery is required, the staff needs to manually engage the second gear with the first gear, so that the operator can directly control the state of the check valve to ensure the correct and safe flow of the fluid. For some critical systems or applications with high safety requirements, the manual reset function can provide higher operational reliability and safety, and greatly improves the operation quality and use efficiency compared with traditional devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a first-perspective stereogram of the present invention;

[0023] Figure 2 It is a second perspective stereogram of the utility model;

[0024] Figure 3 This is a third perspective stereogram of the present invention;

[0025] Figure 4 It is a partial cross-sectional structural schematic diagram of the utility model;

[0026] Figure 5 It is the front view of the utility model;

[0027] Figure 6 for Figure 4 Enlarged view of point A in the middle.

[0028] Legend: 1. Valve body; 2. Limit groove; 3. Sliding groove; 4. Stop plug; 5. Flow sensor; 6. Connecting rod; 7. Sliding block; 8. L-shaped plate; 9. Motor; 10. First gear; 11. Light rod; 12. Second gear; 13. Through groove; 14. Flow groove; 15. Inlet pipe; 16. Outlet pipe; 17. Sealing ring; 18. Observation meter; 19. Mounting plate; 20. Flange; 21. Controller; 22. Spring. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Example

[0032] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a pipeline check valve, including a valve body 1, a limiting groove 2 is provided inside the valve body 1, a sliding groove 3 is provided inside the valve body 1 and below the limiting groove 2, a flow stopper 4 is slidably connected inside the sliding groove 3, a flow measuring sensor 5 is fixedly connected to the bottom of the flow stopper 4, and two connecting rods 6 are fixedly connected to the top of the flow stopper 4, a sliding block 7 is slidably connected inside the limiting groove 2, the tops of the connecting rods 6 extend to the inside of the limiting groove 2 and are fixedly connected to the bottom of the sliding block 7, and springs 22 are sleeved between the top of the inner wall of the sliding groove 3 and the top of the flow stopper 4 outside the connecting rod 6, the flow measuring sensor 5 in the above device can detect the flow of gas or liquid inside the valve body 1, the flow inlet can be completely blocked by the flow stopper 4, the flow stopper 4 blocks the flow groove 14 by fixing the sliding block 7 and the connecting rod 6, and when manually reset, the flow stopper 4 compresses the spring 22, so that the flow stopper 4 is at the top of the sliding groove 3.

[0033] Among them, an L-shaped plate 8 is fixedly connected to the outer side of the valve body 1, and a motor 9 is fixedly connected to the outer side of the L-shaped plate 8. The output shaft of the motor 9 passes through the L-shaped plate 8 and is fixedly connected to a first gear 10. The first gear 10 is set to have teeth at one-quarter. A through groove 13 is opened on the outer side of the valve body 1, and a light rod 11 is slidably connected inside the through groove 13. One end of the light rod 11 extends to the groove of the sliding block 7, and the end of the light rod 11 away from the sliding block 7 is fixedly connected to the second gear 12. The second gear 12 is meshed with the teeth of the first gear 10 at one-quarter. In the above device, when the valve body 1 is used normally, the second gear 12 is in meshing state with the teeth of the first gear 10 at one-quarter. When the flow measuring sensor 5 senses backflow, the motor 9 will rotate half a circle, so that the light rod 11 drives the second gear 12 to disengage, thereby stopping the flow inside the valve body 1.

[0034] Among them, a circulation groove 14 is opened inside the valve body 1 and at the bottom of the inner wall of the sliding groove 3. An inlet pipe 15 is fixedly connected to the bottom of the valve body 1, and one end of the inlet pipe 15 extends to the inside of the circulation groove 14. An outlet pipe 16 is fixedly connected to the outside of the valve body 1, and one end of the outlet pipe 16 extends to the inside of the circulation groove 14. The above device is connected to the external liquid or gas through the inlet pipe 15, and is connected to the pipeline that needs to discharge gas or liquid through the outlet pipe 16.

[0035] Among them, a sealing ring 17 is arranged on the outer side of the stop plug 4, the stop plug 4 is used in conjunction with the flow groove 14, and an observation gauge 18 is fixedly connected to the top of the valve body 1. In the above device, the sealing ring 17 can increase the sealing between the stop plug 4 and the flow groove 14, and the flow velocity and flow rate can be clearly known by observing the gauge 18.

[0036] Among them, a mounting plate 19 is fixedly connected to the bottom of the inlet pipe 15, and the mounting plate 19 is made of rubber. In the above device, the mounting plate 19 is arranged at the bottom of the inlet pipe 15, which can fix the valve body 1 and prevent the pipeline from rubbing against the ground.

[0037] Among them, the ends of the inlet pipe 15 and the outlet pipe 16 away from the valve body 1 are fixedly connected with a flange 20. In the above device, most of the pipelines can be connected to the device through the flange 20.

[0038] Among them, a controller 21 is fixedly connected to the outside of the valve body 1, and the flow sensor 5, the motor 9 and the observation meter 18 are all electrically connected to the controller 21. In the above device, the controller 21 controls the start and stop of the flow sensor 5, the motor 9 and the observation meter 18.

[0039] Working principle:

[0040] like Figure 1-Figure 6As shown, the flow sensor 5 in the above device can detect the flow of gas or liquid inside the valve body 1. The flow velocity and flow rate can be clearly known by observing the meter 18. The inlet pipe 15 and the outlet pipe 16 can be connected to the external pipeline through the flange 20. When the valve body 1 is used normally, the second gear 12 is in meshing state with the teeth at one quarter of the first gear 10. When the flow sensor 5 senses the backflow, the motor 9 will rotate half a circle, so that the light rod 11 drives the second gear 12 to disengage, thereby stopping the flow inside the valve body 1, and the stop plug 4 can completely block the inflow , by fixing the sliding block 7 and the connecting rod 6, the flow stop plug 4 blocks the flow groove 14. When manually reset, the flow stop plug 4 will compress the spring 22, so that the flow stop plug 4 will be at the top of the sliding groove 3. When recovery is required, the staff needs to manually engage the second gear 12 with the first gear 10, so that the operator can directly control the state of the check valve to ensure the correct and safe flow of the fluid. For some critical systems or applications with high safety requirements, the manual reset function can provide higher operational reliability and safety, and greatly improves the operation quality and use efficiency compared with traditional devices.

[0041] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A pipeline check valve, comprising a valve body (1), Features: A limiting groove (2) is provided inside the valve body (1), a sliding groove (3) is provided inside the valve body (1) and below the limiting groove (2), a flow stopper (4) is slidably connected inside the sliding groove (3), a flow measuring sensor (5) is fixedly connected to the bottom of the flow stopper (4), two connecting rods (6) are fixedly connected to the top of the flow stopper (4), a sliding block (7) is slidably connected inside the limiting groove (2), the top of the connecting rod (6) extends to the inside of the limiting groove (2) and is fixedly connected to the bottom of the sliding block (7), and a spring (22) is sleeved outside the connecting rod (6) and between the top of the inner wall of the sliding groove (3) and the top of the flow stopper (4).

2. A pipeline check valve according to claim 1, Features: The outer side of the valve body (1) is fixedly connected to an L-shaped plate (8), and the outer side of the L-shaped plate (8) is fixedly connected to a motor (9), the output shaft of the motor (9) passes through the L-shaped plate (8) and is fixedly connected to a first gear (10), and the first gear (10) is set to have teeth at one quarter. A through groove (13) is opened on the outer side of the valve body (1), and a light rod (11) is slidably connected inside the through groove (13), one end of the light rod (11) extends to the groove of the sliding block (7), and the end of the light rod (11) away from the sliding block (7) is fixedly connected to a second gear (12), and the second gear (12) is meshed with the teeth of the first gear (10) at one quarter.

3. A pipeline check valve according to claim 1, Features: A circulation groove (14) is provided inside the valve body (1) and at the bottom of the inner wall of the sliding groove (3); an inlet pipe (15) is fixedly connected to the bottom of the valve body (1), one end of the inlet pipe (15) extends to the inside of the circulation groove (14); an outlet pipe (16) is fixedly connected to the outside of the valve body (1), one end of the outlet pipe (16) extends to the inside of the circulation groove (14).

4. A pipeline check valve according to claim 3, Features: A sealing ring (17) is arranged on the outer side of the stopper (4), the stopper (4) is used in conjunction with the flow groove (14), and an observation gauge (18) is fixedly connected to the top of the valve body (1).

5. A pipeline check valve according to claim 3, Features: The bottom of the inlet pipe (15) is fixedly connected with a mounting plate (19), and the mounting plate (19) is made of rubber.

6. A pipeline check valve according to claim 3, Features: The ends of the inlet pipe (15) and the outlet pipe (16) away from the valve body (1) are both fixedly connected with flanges (20).

7. A pipeline check valve according to claim 1, Features: A controller (21) is fixedly connected to the outer side of the valve body (1), and the flow sensor (5), the motor (9) and the observation meter (18) are all electrically connected to the controller (21).

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