Check valve convenient for monitoring flow

Abstract

The utility model discloses a check valve facilitating flow monitoring. The check valve comprises a main valve shell, a liquid inlet straight pipe installed at the end of a liquid inlet of the main valve shell in a bolting mode through a flange, a T-shaped three-way pipe integrally formed at the top end of the liquid inlet straight pipe, and a right-angle liquid discharging bent pipe installed at the end of a liquid discharging opening of the main valve shell in a bolting mode through a flange. A digital display type flow meter is installed on the outer wall, away from the main valve shell, of the right-angle drainage elbow, and a valve deck is connected to the upper end of the main valve shell in a bolted mode. The pressure threshold value is regulated and controlled through the regulating rod, it is ensured that the valve body is opened or closed under the appropriate pressure condition, backflow and pressure fluctuation are avoided, and meanwhile, it is ensured that fluid flows safely and stably in a pipeline through real-time monitoring of the flow meter and smooth discharging of the liquid discharging bent pipe.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically a check valve that facilitates flow monitoring. Background Technology

[0002] Check valves with flow monitoring function can effectively prevent backflow, ensuring the normal operation of equipment and pipelines. They can also monitor the fluid flow through the valve in real time via a built-in flow sensor, providing crucial operational data for the pipeline system. The structure of this type of valve includes a robust valve body, a valve disc that controls unidirectional fluid flow, a sealing device, and a sensor for detecting flow. Combined with an electronic control unit and communication interface, the flow sensor enables data acquisition, processing, and remote transmission. During normal operation, fluid passes through the valve; the valve disc opens or closes to prevent backflow, while the built-in flow sensor detects the flow in real time and transmits the data to the electronic control unit. Operators can view real-time flow data, historical trends, and alarm information through a local display screen or remote monitoring platform. However, current check valves rely on fluid pressure to open the valve disc, allowing fluid to flow in one direction. When the fluid flows in the opposite direction, the valve disc is closed by the reverse pressure, thus achieving the function of preventing backflow. This design is very suitable for single-path, single-direction fluid control, but it has obvious limitations in scenarios where multiple pipelines converge. It is difficult to achieve fluid convergence and common check valve for multiple pipelines. Furthermore, the spring and valve disc design of traditional check valves are fixed and lack adjustment mechanisms, making it impossible to dynamically adjust the pressure threshold according to actual operating requirements. Utility Model Content

[0003] The purpose of this invention is to provide a check valve that facilitates flow monitoring. A straight liquid pipe and a T-shaped tee are installed at the inlet end of the main valve body for fluid collection, so that multiple fluids are collected and enter the main valve body as a whole. The Z-axis position of the external thread hollow adjusting rod is adjusted according to the preset pressure requirements to indirectly adjust the pressure threshold of the slow-closing valve body structure. The fluid in the main valve body passes smoothly through the slow-closing valve body structure, passes through the digital display flow meter, and is discharged through the right-angle drain bend, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a check valve for easy flow monitoring, comprising a main valve body, an inlet straight pipe bolted to the flange at the inlet end of the main valve body, a T-shaped tee integrally formed at the top of the inlet straight pipe, and a right-angle drain bend bolted to the flange at the outlet end of the main valve body. A digital flow meter is installed on the outer wall of the right-angle drain bend away from the main valve body. A valve cover is bolted to the upper end of the main valve body, and an internally threaded tapered column is integrally formed inside the main valve body below the valve cover. An externally threaded hollow adjusting rod is installed on the internal thread of the internally threaded tapered column, and a slow-closing valve body structure is installed inside the main valve body below the externally threaded hollow adjusting rod.

[0005] Preferably, a lower valve chamber and an upper valve chamber are respectively provided at the upper and lower positions inside the main valve housing. The slow-closing valve body structure is located at the junction of the lower valve chamber and the upper valve chamber. A drain chamber is provided on one side inside the main valve housing. The drain chamber is used to connect the upper valve chamber and the right-angle drain bend.

[0006] Preferably, sealing rings are installed on the inner wall and bottom of the valve cover.

[0007] Preferably, the outer diameter of the internally threaded tapered post gradually decreases from one end near the valve cover to the other.

[0008] Preferably, the slow-closing valve body structure includes an annular baffle integrally formed on the upper end of the lower valve cavity, through holes provided on the front and rear sides inside the annular baffle, and a valve stem fixed at the center position inside the annular baffle. The top end of the valve stem extends upward into the interior of the upper valve cavity. A valve disc is slidably installed on one end of the valve stem surface, and a conical spring is fitted on the outer circumference of the valve stem between the upper end of the valve disc and the lower end of the externally threaded hollow adjusting rod.

[0009] Preferably, the top end of the valve stem extends into the interior of the externally threaded hollow adjusting rod and slides in engagement with the externally threaded hollow adjusting rod, and the outer diameter of the valve stem is equal to the inner diameter of the externally threaded hollow adjusting rod.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This check valve, which facilitates flow monitoring, is constructed with a structure that integrates an inlet straight pipe, a T-shaped tee, a main valve body, an externally threaded hollow adjusting rod, a slow-closing valve body structure, a right-angle drain bend, and a digital flow meter. Firstly, by installing the inlet straight pipe and T-shaped tee at the inlet end of the main valve body, it effectively achieves the convergence of multiple fluid sources, allowing fluids from different pipelines to enter the main valve body in a concentrated manner. This avoids the problem that traditional single-way check valves cannot handle multiple fluid sources, and the multi-way convergence capability greatly expands the application range of the pipeline, making it particularly suitable for complex operating conditions requiring the joint control of multiple fluid sources. Secondly, it adjusts the flow rate according to preset pressure requirements. The Z-axis position of the threaded hollow adjusting rod allows for indirect adjustment of the pressure threshold of the slow-closing valve body, giving the valve body a high degree of control flexibility. No structural modifications to the valve body are required; simply rotating the external threaded hollow adjusting rod enables fine-tuning of the pressure threshold, meeting the pressure control needs under different operating conditions. This allows for dynamic adjustment of the pressure threshold based on actual operating conditions, ensuring stable pipeline operation under varying flow and pressure, and preventing system failures or energy waste caused by insufficient or excessive pressure. Finally, the design of the digital flow meter allows for real-time display of flow information, providing operators with intuitive and accurate data, facilitating timely detection of abnormal changes, fault diagnosis, and maintenance decisions. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0013] Figure 3 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0014] Figure 4 This is a three-dimensional cross-sectional view of the main valve housing of this utility model;

[0015] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the main valve shell after the slow-closing valve body structure of this utility model has been removed.

[0016] In the diagram: 1. Main valve body; 101. Lower valve chamber; 102. Drain chamber; 103. Upper valve chamber; 2. Inlet straight pipe; 3. T-shaped tee pipe; 4. Right-angle drain bend; 5. Digital flow meter; 6. Valve cover; 601. Sealing ring; 7. Internally threaded tapered post; 8. Externally threaded hollow adjusting rod; 9. Slow-closing valve body structure; 901. Annular baffle; 902. Through hole; 903. Valve stem; 904. Valve disc; 905. Conical spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] Please see Figure 1-5 An embodiment of this utility model provides a check valve for easy flow monitoring, comprising a main valve body 1, an inlet straight pipe 2 bolted to the flange at the inlet end of the main valve body 1, a T-shaped tee pipe 3 integrally formed at the top of the inlet straight pipe 2, and a right-angle drain bend 4 bolted to the flange at the outlet end of the main valve body 1. A digital flow meter 5 is installed on the outer wall of the right-angle drain bend 4 away from the main valve body 1. A valve cover 6 is bolted to the upper end of the main valve body 1, and an internally threaded tapered column 7 is integrally formed inside the main valve body 1 below the valve cover 6. An externally threaded hollow adjusting rod 8 is installed inside the internal thread of the internally threaded tapered column 7. A slow-closing valve body structure 9 is installed inside the main valve body 1 below the externally threaded hollow adjusting rod 8.

[0019] The main valve housing 1 has a lower valve chamber 101 and an upper valve chamber 103 located at the upper and lower positions respectively. The slow-closing valve body structure 9 is located at the junction of the lower valve chamber 101 and the upper valve chamber 103. A drain chamber 102 is provided on one side of the main valve housing 1. The drain chamber 102 is used to connect the upper valve chamber 103 and the right-angle drain bend 4. The fluid enters the lower valve chamber 101 of the main valve housing 1 through the inlet straight pipe 2 and the T-shaped three-way pipe 3 and flows towards the upper valve chamber 103. When the fluid breaks through the slow-closing valve body structure 9, the fluid enters the right-angle drain bend 4 through the drain chamber 102 and flows out after being monitored by the digital display flow meter 5.

[0020] A sealing ring 601 is installed on the inner wall and bottom of the valve cover 6, and the outer diameter of the internal threaded tapered post 7 gradually decreases from one end near the valve cover 6 to the other end.

[0021] The slow-closing valve body structure 9 includes an annular baffle 901 integrally formed on the upper end of the lower valve chamber 101, through holes 902 provided on the front and rear sides inside the annular baffle 901, and a valve stem 903 fixed at the center position inside the annular baffle 901. The top end of the valve stem 903 extends upward into the interior of the upper valve chamber 103. A valve disc 904 is slidably mounted on one end of the surface of the valve stem 903. A conical spring 9 is fitted on the outer circumference of the valve stem 903 between the upper end of the valve disc 904 and the lower end of the externally threaded hollow adjusting rod 8. 05. The fluid passes through the through hole 902 of the annular baffle 901 and impacts the valve disc 904 upwards, causing the valve disc 904 to move upwards in the vertical direction of the valve stem 903. At this time, the conical spring 905 is in a compressed state, and the fluid enters the right-angle drain bend 4 through the drain chamber 102. When the fluid pressure gradually decreases and is insufficient to overcome the elastic force of the conical spring 905, the valve disc 904 moves downwards and actively blocks the through hole 902, so that the lower valve chamber 101 and the drain chamber 102 are no longer connected.

[0022] The top of the valve stem 903 extends into the interior of the externally threaded hollow adjusting rod 8 and slides in fit with it. The outer diameter of the valve stem 903 is equal to the inner diameter of the externally threaded hollow adjusting rod 8. The operator manually rotates the externally threaded hollow adjusting rod 8, causing it to move up or down within the internally threaded tapered column 7. This changes the distance between the externally threaded hollow adjusting rod 8 and the valve disc 904, thereby adjusting the initial elastic force of the conical spring 905 and the pressure threshold required for the valve disc 904 to open or close.

[0023] In this embodiment, the operator first adjusts the Z-axis position of the externally threaded hollow adjusting rod 8 to change the preload of the slow-closing valve body structure 9, thereby adjusting the pressure threshold required for the valve body to open or close. When the fluid pressure is higher than the preset value, the slow-closing valve body structure 9 will open to allow fluid to pass through; otherwise, it will close, ensuring that the main valve housing 1 operates stably within the set pressure range. Fluid enters the main valve housing 1 through the inlet straight pipe 2 and the T-shaped tee pipe 3. The inlet straight pipe 2 and the T-shaped tee pipe 3 serve to collect multiple fluids, merging fluids from different pipes into a common channel. The collected multiple fluids flow into the interior of the main valve housing 1. When the fluid rushes... After the fluid is restricted by the slow-closing valve body structure 9, it continues to flow into the subsequent drainage path and enters the right-angle drainage bend 4. At this time, the digital flow meter 5 monitors the fluid flow rate in real time and presents the data to the operator intuitively through the digital display screen. If the fluid flow rate gradually decreases and is insufficient to overcome the restriction of the slow-closing valve body structure 9, the slow-closing valve body structure 9 will actively close, thus isolating the chambers of the main valve body 1 and the right-angle drainage bend 4. After the digital flow meter 5, the fluid is discharged along the right-angle drainage bend 4. The design of the right-angle drainage bend 4 ensures that the fluid avoids pressure fluctuations and turbulence during the discharge process, ensuring smooth discharge until the fluid enters the next section of the pipeline structure.

Claims

1. A check valve for easy flow monitoring, characterized in that: The system includes a main valve housing (1), an inlet straight pipe (2) bolted to the flange at the inlet end of the main valve housing (1), a T-shaped tee pipe (3) integrally formed at the top of the inlet straight pipe (2), and a right-angle drain bend (4) bolted to the flange at the outlet end of the main valve housing (1). A digital flow meter (5) is installed on the outer wall of the right-angle drain bend (4) away from the main valve housing (1). A valve cover (6) is bolted to the upper end of the main valve housing (1), and an internally threaded tapered column (7) is integrally formed inside the main valve housing (1) below the valve cover (6). An externally threaded hollow adjusting rod (8) is installed on the internal thread of the internally threaded tapered column (7), and a slow-closing valve body structure (9) is installed inside the main valve housing (1) below the externally threaded hollow adjusting rod (8).

2. The check valve for easy flow monitoring according to claim 1, characterized in that: The main valve housing (1) has a lower valve chamber (101) and an upper valve chamber (103) located at the upper and lower positions respectively. The slow-closing valve body structure (9) is located at the junction of the lower valve chamber (101) and the upper valve chamber (103). A drain chamber (102) is provided on one side of the main valve housing (1). The drain chamber (102) is used to connect the upper valve chamber (103) and the right-angle drain bend (4).

3. A check valve for easy flow monitoring according to claim 1, characterized in that: A sealing ring (601) is installed on the inner wall and bottom of the valve cover (6).

4. A check valve for easy flow monitoring according to claim 1, characterized in that: The outer diameter of the internally threaded tapered post (7) gradually decreases from one end near the valve cover (6) to the other end.

5. A check valve for easy flow monitoring according to claim 1, characterized in that: The slow-closing valve body structure (9) includes an annular baffle (901) integrally formed on the upper end of the lower valve chamber (101), through holes (902) provided on the front and rear sides inside the annular baffle (901), and a valve stem (903) fixed at the center position inside the annular baffle (901). The top end of the valve stem (903) extends upward to the interior of the upper valve chamber (103). A valve disc (904) is slidably installed on one end of the surface of the valve stem (903). A conical spring (905) is fitted on the outer circumference of the valve stem (903) between the upper end of the valve disc (904) and the lower end of the externally threaded hollow adjusting rod (8).

6. A check valve for easy flow monitoring according to claim 5, characterized in that: The top of the valve stem (903) extends into the interior of the externally threaded hollow adjusting rod (8) and slides in fit with the externally threaded hollow adjusting rod (8). The outer diameter of the valve stem (903) is equal to the inner diameter of the externally threaded hollow adjusting rod (8).

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