Multifunctional check integrated valve

Abstract

The utility model discloses a multifunctional check integrated valve, which relates to the technical field of check valves, and comprises a valve pipe, a check unit arranged in the valve pipe and used for preventing water flow from flowing back, an exhaust unit and an air supply unit, a bobbin top cover is installed on the top of the exhaust bobbin, and a guide channel is arranged in the center of the top of the bobbin top cover. The functions of a check valve, an air inlet valve and an air outlet valve are integrated on one valve body, the number of independent valves needed on a water supply pipeline is reduced, the design of a pipeline system is simplified, the number of connectors on the pipeline is reduced, the installation process is simplified, the installation cost and time are reduced, and meanwhile the total manufacturing cost of the pipeline system is reduced; and the integrated design can reduce maintenance points and simplify maintenance and inspection processes.

Description

Technical Field

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

[0002] Check valves and air inlet valves are often used in water supply pipelines. Check valves are used to prevent water from flowing back, while air inlet valves are used to let air into the pipeline when the pressure in the pipeline is low, so that the water in the pipeline can flow back into the water supply well. At present, check valves and air inlet valves are usually installed on water supply pipelines separately, and multiple joints are required to install check valves and air inlet valves respectively. In addition, when conveying water, it is mostly achieved with the help of machinery such as water pumps. For water pumps, some air is often generated during work. When these air accumulates in the pipeline, it will increase the pressure, which may damage the equipment or make the water conveyance work unable to proceed normally. Therefore, it is necessary to install an exhaust valve on the water pipeline. The common exhaust valve has a complex structure and a relatively high cost. In addition, installing multiple valve bodies such as check valves, air inlet valves and exhaust valves on the pipeline in succession will also cause inconvenience in pipeline connection and time-consuming and laborious operation. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a multifunctional integrated check valve, which integrates a check valve, an air inlet valve and an exhaust valve into one valve body, is easy to install on a water pipeline and can also reduce production costs.

[0004] The solution adopted by the utility model to solve its technical problems is: a multifunctional integrated check valve, including a valve tube, a check unit for preventing water backflow is arranged in the valve tube, and also includes an exhaust unit and an air supply unit, the exhaust unit includes an exhaust tube vertically arranged on the valve tube and connected to the valve tube, a tube top cover is installed on the top of the exhaust tube, a guide channel is arranged at the top center of the tube top cover, a support rod is vertically arranged in the exhaust tube, the top of the support rod is sleeved in the guide channel, and a float plug is arranged on the support rod, when no water flows through, the bottom end of the support rod contacts the inner wall of the valve tube to support the float plug, and pads are arranged above and below the guide channel The float plug is matched with the gasket; the air supply unit includes an air supply pipe and an air supply pipe head which are connected to each other, the air supply pipe is fixed to the side wall of the exhaust pipe and is connected to the inner cavity of the exhaust pipe, a valve core is fixedly sleeved on the top of the air supply pipe, the valve core includes a sleeve fixedly sleeved in the air supply pipe, and stop parts are respectively provided at the outer port and the inner port of the sleeve, and an air blocking block is movably sleeved on the inner side of the outer port stop part, an elastic supporting mechanism is provided between the air blocking block and the inner port stop part, and the elastic supporting mechanism can drive the air blocking block to move in the sleeve to close or open the valve core; pipe joints are symmetrically installed at both ends of the main valve pipe.

[0005] Furthermore, the check unit includes a grid-shaped supporting surface obliquely installed on the inner wall of the valve tube, and a check valve plate is obliquely installed on the side of the supporting surface opposite to the water inlet end of the valve tube. The check valve plate is provided with a mounting shaft on the side close to the supporting surface, and a clamp is provided on the mounting shaft. The mounting shaft is matched and inserted into the mounting hole of the supporting surface and positioned by the clamp. The check valve plate can swing along the mounting shaft.

[0006] Furthermore, the stopping portion of the outer port of the sleeve is an annular baffle formed by an inwardly flanged edge, and an air inlet hole is provided at the center of the annular baffle. The outer edge radius of the air blocking block is smaller than the inner diameter of the sleeve and larger than the inner diameter of the air inlet hole, and an air flow channel is formed between the outer edge of the air blocking block and the inner wall of the sleeve.

[0007] Furthermore, the elastic support mechanism includes a support block annularly fixed on the inner wall of the sleeve, an air flow channel is retained between the support block and the sleeve, a sliding sleeve located in the center of the sleeve is fixedly connected to the opposite end of the support block, a sliding rod is slidably sleeved up and down in the sliding sleeve, the top end of the sliding rod is connected to the air blocking block, a spring is sleeved on the sliding rod, and the two ends of the spring are respectively connected to the air blocking block and the sliding sleeve.

[0008] Furthermore, an exhaust elbow is fixedly installed above the guide channel at the top of the exhaust pipe.

[0009] Furthermore, the included angle between the support surface, the check valve plate and the pipe wall is 120 degrees.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model provides a valve pipe, an exhaust unit, an air supply unit and a check unit, and adopts the design of a float plug and a guide channel during water delivery to realize an automatic exhaust function, so that the exhaust unit can exhaust the air in the pipeline in time to prevent the pressure increase caused by air accumulation, thereby protecting the equipment from damage and ensuring the normal operation of the water delivery. After the water delivery is stopped, the design of the check valve plate allows rapid closure when the water flow stops to prevent backflow, thereby improving the one-way transmission efficiency of the water flow and ensuring the safe operation of the water supply system. After the water delivery is stopped, the pressure and the air supply unit can cooperate to push the air blocking block downward to open the air supply pipe, so that the external gas can enter the valve body, and the rapid backflow of water in the pipeline is realized.

[0012] By integrating the functions of the check valve, air inlet valve and exhaust valve into one valve body, the number of separate valves required on the water supply pipe is reduced, the design of the piping system is simplified, and the number of joints on the pipe is reduced, which simplifies the installation process, reduces installation costs and time, and reduces the overall cost of the piping system. The integrated design can also reduce maintenance points and simplify the maintenance and inspection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 This is a schematic diagram of the valve core structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of the check valve plate of the utility model.

[0017] In the figure: 1. valve pipe; 2. pipe joint; 3. exhaust unit; 31. exhaust cylinder pipe; 32. cylinder top cover; 33. guide channel; 34. gasket; 35. float plug; 36. support rod; 4. air supply unit; 41. air supply pipe; 42. valve core; 421. sleeve; 422. sliding sleeve; 423. support block; 424. sliding rod; 425. air blocking block; 426. air inlet hole; 427. spring; 43. air supply pipe head; 44. air supply hole; 5. check unit; 51. support surface; 52. check valve plate; 53. mounting shaft; 54. clamp; 6. exhaust elbow. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] See also Figure 1-4 The utility model provides a technical solution of a multifunctional integrated check valve: Example

[0020] according to Figure 1 As shown, it includes a valve pipe 1, and pipe joints 2 are symmetrically installed at the left and right ends of the valve pipe 1. The valve pipe 1 and the pipe joint 2 are threaded together, and the valve body is installed and connected to the main pipeline through the pipe joint 2. A check unit 5 for preventing water from flowing back is arranged in the valve pipe 1. The structure of the check unit 5 is consistent with the structure of the check valve in the new patent with patent number "201520349505.9" and patent name "intake check integrated valve" applied by the same applicant. The specific structure of the check unit 5 is as follows Figure 2As shown, a grid-shaped supporting surface 51 is obliquely installed on the inner wall of the valve tube 1, and a check valve plate 52 is obliquely installed on the side of the supporting surface 51 opposite to the water inlet end of the valve tube 1. The supporting surface 51 is used to support the check valve plate 52, and can also be used to isolate impurities to prevent impurities from adhering to the check valve plate 52. The included angle between the supporting surface 51, the check valve plate 52 and the tube wall is 120 degrees. The check valve plate 52 is provided with a mounting shaft 53 on the side adjacent to the supporting surface 51, and a clamping head 54 is provided on the mounting shaft 53. The mounting shaft 53 is matched and inserted into the mounting hole of the supporting surface 51 and is positioned by the clamping head 54. The check valve plate 52 can be tilted and swung with the mounting shaft 53 as the axis.

[0021] The exhaust unit 3 is also included. The exhaust unit 3 includes an exhaust tube 31 vertically arranged on the valve tube 1 and connected to the valve tube 1. When the valve body is used, the exhaust tube 31 is kept vertically upward. A tube cover 32 is installed on the top of the exhaust tube 31. A guide channel 33 is vertically arranged at the top center of the tube cover 32. A support rod 36 is vertically arranged in the exhaust tube 31. The top of the support rod 36 is sleeved in the guide channel 33, and a float plug 35 is arranged on the support rod 36. When there is no water flow, the support rod 36 The bottom end is in contact with the inner wall of the valve tube 1 to support the float plug 35. The float plug 35 is a hollow ball made of lightweight material and floats when it encounters water. Gaskets 34 are provided above and below the guide channel 33. The float plug 35 is adapted to the gasket 34. After the float plug 35 floats when it encounters water, it can closely contact the gasket 34 below. The guide channel 33 is blocked by the float plug 35 to prevent water from overflowing during the exhaust process. By arranging gaskets above and below the guide channel, the sealing effect of the guide channel can be improved.

[0022] An air supply unit 4 is arranged on the side wall of the exhaust tube 31, and the air supply unit 4 includes an air supply pipe 41 and an air supply pipe head 43 which are connected to each other by threads. An air supply hole 44 is opened in the center of the air supply pipe head 43, and air can enter the air supply pipe 41 through the air supply hole 44. The air supply pipe 41 is fixed to the side wall of the exhaust tube 31 and is connected to the inner cavity of the exhaust tube 31. A valve core 42 is fixedly sleeved on the outer port of the air supply pipe 41. The valve core 42 includes a sleeve 421 sleeved in the air supply pipe 41. The outer port and the inner port of the sleeve 421 are respectively provided with stop parts. The stop part of the outer port of the sleeve 421 is an annular stopper formed by an inward flange at the outer port, and the center of the annular stopper The center is set to be an air inlet hole 426, so that external gas can enter the sleeve 421 through the air inlet hole 426, and an air blocking block 425 is provided on the inner side of the stop part of the outer port of the sleeve 421. The air blocking block 425 is connected to the stop part of the inner port of the sleeve 421 through an elastic support mechanism, and the outer edge radius of the air blocking block 425 is smaller than the inner diameter of the sleeve 421 and larger than the inner diameter of the air supply hole 44, so that an annular air flow channel can be formed between the outer edge of the air blocking block 425 and the inner wall of the sleeve 421, and under normal conditions, through the supporting effect of the elastic support mechanism, the air blocking block 425 will completely block the air inlet hole 426, so that external gas will not enter the air supply pipe 41.

[0023] The elastic support mechanism includes three support blocks annularly fixed to the inner wall of the sleeve 421, an air flow channel is retained between the support blocks and the sleeve 421, a sliding sleeve 422 located in the center of the sleeve 421 is fixedly connected to the opposite end of the support block, a sliding rod 424 is slidably sleeved up and down in the sliding sleeve 422, and the top of the sliding rod 424 is connected to the air blocking block 425, a spring 427 is sleeved on the sliding rod 424, and the two ends of the spring 427 are respectively connected to the air blocking block 425 and the sliding sleeve 422. By setting up the elastic support mechanism, under the joint action of the support block 423, the sliding rod 424 and the sliding sleeve 422, the air blocking block 425 can be supported and restricted, so that the air blocking block 425 can move axially smoothly in the sleeve 421, and the elastic force of the spring 425 is small. When the external air When the pressure outside the valve tube is greater than the internal air pressure, the external air pressure can compress the spring to contract. By setting the spring 427, when the external air pressure is not much different from the internal air pressure of the valve tube and the elastic force of the spring 427 is not overcome, the air blocking block 425 will be pressed against the outer stop portion under the action of the spring 427 to close the valve core 42 and continuously block the air inlet 426. External gas will not enter the air supply pipe 41 to ensure the sealing of the air supply pipe 41. When the external pressure of the air supply pipe 41 is greater than the internal pressure, the air blocking block 425 is compressed inwardly and overcomes the elastic force of the spring 427 to move downward, so that the valve core 42 and the air inlet 426 are opened for ventilation, and then the external air can enter the valve tube 1 through the head of the air supply pipe 41, the air inlet 426, and the sleeve 421, thereby prompting the water in the pipeline to flow back to the water supply well.

[0024] In specific use, the utility model is a multifunctional integrated check valve. When in use, the valve pipe 1 is assembled with the main pipe through the pipe joint 2, and the exhaust pipe 31 is kept in a vertical upward state. When no water flows, the float plug 35 is in a static state, and the support rod 36 supports the float plug 35 to maintain a normal ventilation height. The air blocking block 425 is pushed by the spring 427 to cling to the stop position on the sleeve 421 to block the air inlet 426. When the water starts to flow through, the water flow pushes the float plug 35 Lift up, at this time the float plug 35 is close to the gasket 34 below, blocking the guide channel 33 to prevent water from overflowing from the exhaust tube 31. When the water flow is stable, due to the constant pressure in the water pipe, the water flow will not fill the entire exhaust tube 31, and the float plug 35 is no longer close to the upper part of the exhaust tube 31. The gas in the water flow floats above the water flow. When the gas in the water flow passes through the exhaust tube 31, the gas is discharged out of the pipeline through the exhaust tube 31, completing the entire exhaust process, so that the water flow can be transported stably.

[0025] When the water valve is closed, the check unit 5 will prevent the backflow of water on one side of the pipe, while the water on the other side of the pipe needs to flow back into the water supply well. The external air pressure is greater than the internal pressure of the pipe. The external air pressure will compress the spring 427 to move the air blocking block 425 downward and no longer block the air inlet 426, thereby allowing the external air to enter the valve pipe 1 through the air supply pipe head 43 and the air supply pipe 41, causing the water in the pipe to flow back into the water supply well, and the float plug 35 falls and is supported by the support rod 36, the guide channel 33 is opened, and the external air enters the valve pipe 1 through the guide channel 33 and the air supply pipe 41 synchronously, thereby increasing the speed of water reflux. Example

[0026] On the basis of the first embodiment, Figure 1 As shown, an exhaust elbow 6 is fixedly installed above the guide channel 33 at the top of the exhaust tube 31. The exhaust elbow 6 is a right-angle elbow. When the water flow is fast or the water pressure is unstable, it can further block the water vapor and splashes from splashing out of the device. It can further prevent water from splashing out without affecting the normal exhaust function, thereby ensuring the normal exhaust function of the exhaust valve itself.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional integrated check valve, comprising a valve tube (1), wherein a check unit (5) for preventing water from flowing back is arranged in the valve tube (1), characterized in that: The invention also comprises an exhaust unit (3) and an air supply unit (4), wherein the exhaust unit (3) comprises an exhaust tube (31) vertically arranged on the valve tube (1) and connected to the valve tube (1), a tube top cover (32) is installed on the top of the exhaust tube (31), a guide channel (33) is arranged at the top center of the tube top cover (32), a support rod (36) is vertically arranged in the exhaust tube (31), the top of the support rod (36) is sleeved in the guide channel (33), and a float plug (35) is arranged on the support rod (36), when no water flows through, the bottom end of the support rod (36) contacts the inner wall of the valve tube (1) to support the float plug (35), gaskets (34) are arranged above and below the guide channel (33), and the float plug (35) is matched with the gasket (34); the air supply unit (4) comprises An air supply pipe (41) and an air supply pipe head (43) are connected to each other. The air supply pipe (41) is fixed to the side wall of the exhaust pipe (31) and communicates with the inner cavity of the exhaust pipe (31). A valve core (42) is fixedly sleeved on the top of the air supply pipe (41). The valve core (42) comprises a sleeve (421) fixedly sleeved in the air supply pipe (41). Stopping parts are respectively provided at the outer port and the inner port of the sleeve (421). A gas blocking block (425) is movably sleeved on the inner side of the outer port stopping part. An elastic support mechanism is provided between the gas blocking block (425) and the inner port stopping part. The elastic support mechanism can drive the gas blocking block (425) to move in the sleeve (421) to close or open the valve core (42). Pipe joints (2) are symmetrically installed at both ends of the valve pipe (1).

2. A multifunctional integrated check valve according to claim 1, characterized in that: The non-return unit (5) comprises a grid-shaped supporting surface (51) obliquely mounted on the inner wall of the valve tube (1); a non-return valve plate (52) is obliquely mounted on the side of the supporting surface (51) opposite to the water inlet end of the valve tube (1); a mounting shaft (53) is provided on the side of the non-return valve plate (52) adjacent to the supporting surface (51); a clamping head (54) is provided on the mounting shaft (53); the mounting shaft (53) is matched and inserted into the mounting hole of the supporting surface (51) and is positioned by the clamping head (54); the non-return valve plate (52) can swing along the mounting shaft (53).

3. The multifunctional integrated check valve according to claim 1, characterized in that: The stopping portion of the outer port of the sleeve (421) is an annular stopper formed by inwardly turning the edge, and an air inlet hole (426) is provided at the center of the annular stopper. The outer edge radius of the air blocking block (425) is smaller than the inner diameter of the sleeve (421) and larger than the inner diameter of the air inlet hole (426), and an air flow channel is formed between the outer edge of the air blocking block (425) and the inner wall of the sleeve (421).

4. The multifunctional integrated check valve according to claim 1, characterized in that: The elastic support mechanism comprises a support block (423) annularly fixed to the inner wall of the sleeve (421), an air flow channel being retained between the support block (423) and the sleeve (421), a sliding sleeve (422) located at the center of the sleeve (421) being fixedly connected to the opposite end of the support block (423), a sliding rod (424) being slidably sleeved up and down in the sliding sleeve (422), the top end of the sliding rod (424) being connected to an air blocking block (425), a spring (427) being sleeved on the sliding rod (424), and the two ends of the spring (427) being respectively connected to the air blocking block (425) and the sliding sleeve (422).

5. The multifunctional integrated check valve according to claim 1, characterized in that: An exhaust elbow (6) is also fixedly mounted above the guide channel (33) at the top of the exhaust cylinder pipe (31).

6. The multifunctional integrated check valve according to claim 2, characterized in that: The included angle between the support surface (51), the check valve plate (52) and the pipe wall is 120 degrees.

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