Novel industrial instrument differential pressure type flowmeter

Abstract

The utility model relates to the technical field of differential pressure type flow meters, and provides a novel industrial instrument differential pressure type flow meter which comprises a confluence box, a measuring tube is fixedly inserted in the middle of one side wall of the confluence box, one end of the measuring tube is located on the inner side of the confluence box, and a flow meter body is fixed to the outer wall of the other end of the measuring tube. A flow guide pipe is fixedly inserted in the middle of the other side wall of the confluence box, one end of the flow guide pipe is located on the inner side of the confluence box, the inner wall of one end of the flow guide pipe is fixedly sleeved with a fixing disc, and a liquid inlet pipe is fixed to one side wall of the fixing disc. Fluid in the flow guide pipe enters the inner side of the confluence box through the thin liquid inlet pipes and then is filtered by the filter screen to enter the inner wall of the measuring pipe to be measured, the filter screen can intercept solid particles in the fluid on the inner side of the confluence box, and the measuring pipe is prevented from being blocked; and the filter screen can be driven to move out of the inner side of the confluence box by moving the bottom plate, the filter screen is convenient to replace, disassembly operation is simple and convenient, and efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of differential pressure flow meter technology, specifically a new type of industrial instrument differential pressure flow meter. Background Technology

[0002] Differential pressure (also known as throttling) flow meters are based on the principle of fluid flow throttling, utilizing the pressure difference generated when fluid flows through a throttling device to measure flow rate. It is one of the most mature and commonly used methods for flow measurement in production. It typically consists of a throttling device that converts the measured flow rate into a differential pressure signal, a differential pressure gauge that converts this pressure difference into a corresponding flow rate value for display, and a display instrument. In unit-combination instruments, the differential pressure signal generated by the throttling device is often converted into a corresponding standard signal (electrical or pneumatic) by a differential pressure transmitter for display, recording, or control purposes.

[0003] Existing industrial differential pressure flow meters, including orifice plate differential pressure flow meters, may contain solid particles in the fluid during use. These solid particles enter the metering pipeline through the conveying pipeline, and long-term accumulation of solid particles may cause blockage in the metering pipeline, affecting the flow meter's measurement results. Furthermore, to prevent blockage, existing industrial differential pressure flow meters have filters installed inside the pipeline, but the filters are very inconvenient to remove. Prolonged use may lead to a lack of cleaning and blockage of the filters, affecting the progress of industrial production.

[0004] Therefore, a new type of industrial instrument, the differential pressure flow meter, is needed that can avoid pipe blockage and facilitate the disassembly and replacement of filters. Utility Model Content

[0005] To address the aforementioned issues, this invention proposes a novel industrial differential pressure flow meter that can filter and retain solid particulate matter. The filter screen is easy to replace, facilitating long-term, efficient filtration of solid particulate matter and preventing pipe blockage.

[0006] To achieve the above objectives, the present invention proposes the following specific solutions:

[0007] A novel industrial differential pressure flow meter includes a manifold box. A measuring tube is fixedly inserted into the middle of one side wall of the manifold box, with one end of the measuring tube located inside the manifold box. The flow meter body is fixed to the outer wall of the other end of the measuring tube. A guide tube is fixedly inserted into the middle of the other side wall of the manifold box, with one end of the guide tube located inside the manifold box. A fixing plate is fixedly sleeved on the inner wall of one end of the guide tube. An inlet pipe is fixed to one side wall of the fixing plate, and the inlet pipe communicates with the inner side of the guide tube. A base plate is provided below the manifold box. A hollow plate is fixed to the top surface of the base plate. A filter screen is movably inserted into the inner side of the hollow plate. The filter screen is located inside the manifold box and is attached to one end of the measuring tube. A fixing block is fixed to the middle of the bottom surface of the base plate. Rectangular grooves are symmetrically provided on the side wall of the fixing block. A rectangular plate is movably inserted into the inner side of the rectangular groove. A fixing frame is symmetrically fixed to the lower side wall of the manifold box, with one end of the rectangular plate located inside the fixing frame.

[0008] As a preferred technical solution of a novel industrial instrument differential pressure flow meter of this utility model, the outer wall of the filter screen is fixed with a plug plate, and the plug plate is movably plugged into the inner side of the hollow plate.

[0009] As a preferred technical solution of a novel industrial instrument differential pressure flow meter of this utility model, a second threaded hole is provided on the outer wall of one side of the upper end of the hollow plate. The second threaded hole is connected to the inner side of the hollow plate, and a second screw is threadedly connected to the inner side of the second threaded hole.

[0010] As a preferred technical solution of a novel industrial instrument differential pressure flow meter of this utility model, a spring is fixed at the other end of the rectangular plate, the spring is located inside the rectangular groove, and one end of the spring is fixed on the inner wall of the rectangular groove.

[0011] As a preferred technical solution for a novel industrial differential pressure flow meter of this utility model, a small handle is fixed on the bottom surface of the rectangular plate, and the small handle is located on one side of the fixing block.

[0012] As a preferred technical solution of a novel industrial instrument differential pressure flow meter of this utility model, a sealing frame is fixed on the top surface of the base plate, the sealing frame is located on the outside of the hollow plate, and the sealing frame is tightly fitted with the manifold box.

[0013] As a preferred technical solution of a novel industrial instrument differential pressure flow meter of this utility model, the bottom surface of the fixed frame is provided with a first threaded hole in the middle, the first threaded hole is connected to the inner side of the fixed frame, and a first screw is threadedly connected to the inner side of the first threaded hole.

[0014] As a preferred technical solution for a novel industrial differential pressure flow meter according to this utility model, the sealing frame is made of flexible material, and the liquid inlet pipe is provided with multiple parts.

[0015] Compared with existing technologies, this utility model has the following advantages:

[0016] This utility model's manifold is used to collect fluid and solid particles within the fluid. Fluid carrying solid particles from the inside of the guide tube enters the manifold through multiple thinner inlet pipes on the side wall of the fixed plate. A filter screen traps the solid particles inside the manifold, while the fluid passes through the filter screen into the measuring tube for flow meter measurement. Due to the small size of the inlet pipes, solid particles entering the manifold through the inlet pipes are unlikely to return along the same path and will eventually accumulate on the bottom plate of the manifold. By moving the bottom plate downwards, the filter screen can be moved out of the manifold (the filter screen is inserted into the hollow plate via a connector plate and fixed by one end of a second screw). Then, rotating the second screw removes it from contact with the connector plate, allowing the connector plate to be moved out of the hollow plate, thus completing the filter screen removal and replacement. This solution effectively prevents solid particles from entering the measuring tube and causing blockage. The filter screen replacement is simple and convenient, improving maintenance efficiency.

[0017] The base plate of this invention is located below the manifold box. The flexible sealing frame on the top surface of the base plate can fit tightly against the lower end of the manifold box to prevent fluid leakage. Two rectangular plates below the base plate are inserted into the inner sides of two symmetrically arranged fixing brackets on the side wall of the manifold box under the elastic force of two springs to fix the base plate. Simply grasp the two small handles and move the two rectangular plates towards each other until they are close to each other to disengage them from the inner sides of the fixing brackets, releasing the fixing of the base plate and allowing for disassembly. The operation is very simple. Furthermore, by rotating the first screw connected to the first threaded hole on the bottom surface of the fixing bracket, the first screw rotates upward, which pushes the rectangular plates upward. The rectangular plates drive the base plate upward, causing the sealing frame to deform and fit more tightly against the manifold box, eliminating the possibility of fluid leakage and enhancing safety. Attached Figure Description

[0018] To better describe the technical solution of this utility model in detail, the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a three-dimensional view of the overall structure provided by this utility model;

[0020] Figure 2 This is a three-dimensional sectional view of the present invention;

[0021] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This utility model Figure 2 Enlarged view of point B in the middle;

[0023] Figure 5 This utility model Figure 2 Enlarged diagram of point C in the middle.

[0024] In the diagram: 1. Manifold; 11. Measuring tube; 111. Flow meter body; 12. Guide tube; 121. Fixing plate; 122. Inlet pipe; 13. Fixing bracket; 131. First threaded hole; 132. First screw; 2. Base plate; 21. Sealing frame; 22. Fixing block; 221. Rectangular groove; 23. Rectangular plate; 231. Small handle; 232. Spring; 24. Hollow plate; 241. Second threaded hole; 242. Second screw; 3. Filter screen; 31. Connecting plate. Detailed Implementation

[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model. Example

[0026] Please see Figure 1-5 As shown, this utility model provides the following technical solution: a novel industrial instrument differential pressure flow meter, including a manifold 1, a measuring tube 11 fixedly inserted into the middle of one side wall of the manifold 1 for measuring fluid flow, one end of the measuring tube 11 located inside the manifold 1, and a flow meter body 111 fixed to the outer wall of the other end of the measuring tube 11 (the flow meter body 111 is prior art, and the specific operation mode and principle can be referred to the orifice plate differential pressure flow meter in the prior art, so it is not described in detail here). The flow meter body 111 of this solution can measure the fluid in the measuring tube 11 to obtain measurement data.

[0027] Reference Figure 1 , Figure 2 and Figure 3As shown, specifically, a guide tube 12 is fixedly inserted into the middle of the other side wall of the manifold 1 for guiding fluid into the inlet pipe 122. One end of the guide tube 12 is located inside the manifold 1, and a fixing plate 121 is fixedly sleeved on the inner wall of one end of the guide tube 12 for fixing the inlet pipe 122. The inlet pipe 122 is fixed on one side wall of the fixing plate 121. Multiple inlet pipes 122 are provided, and the inlet pipes 122 are connected to the inner side of the guide tube 12, which can guide fluid and solid particles into the inner side of the manifold 1. A base plate 2 is provided below the manifold 1 to support the filter screen 3. A hollow plate 24 is fixed on the top surface of the base plate 2 for connecting the plug-in plate 31. A filter screen 3 is movably inserted into the inner side of the plate 24 to filter solid particles in the fluid. The filter screen 3 is located inside the manifold 1 and is attached to one end of the measuring tube 11. In this scheme, the fluid enters the inner side of the inlet pipe 122 through the guide pipe 12. Multiple inlet pipes 122 guide the fluid into the inner side of the manifold 1. After being filtered by the filter screen 3, solid particles can be trapped. Since the inlet pipe 122 is small in size, solid particles are difficult to flow back along the original path and are ultimately trapped inside the manifold 1, which avoids solid particles from entering the measuring tube 11 and causing blockage, and helps to extend the service life of the measuring tube 11 and the flow meter body 111. Example

[0028] In another embodiment of this solution, refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, specifically, a fixing block 22 is fixed in the middle of the bottom surface of the base plate 2 for setting the rectangular groove 221. The side wall of the fixing block 22 is symmetrically provided with rectangular grooves 221 for connecting and moving the rectangular plate 23. The rectangular plate 23 is movably inserted into the inner side of the rectangular groove 221 to fix the base plate 2. The lower side wall of the junction box 1 is symmetrically fixed with a fixing frame 13, which can cooperate with the rectangular plate 23 to fix the base plate 2. One end of the rectangular plate 23 is located inside the fixing frame 13, and the other end of the rectangular plate 23 is fixed with a spring 232. The spring force pushes one end of the rectangular plate 23 into the inner side of the fixing frame 13. The spring 232 is located inside the rectangular groove 221, and one end of the spring 232 is fixed. On the inner wall of the rectangular groove 221, a small handle 231 is fixed to the bottom surface of the rectangular plate 23 to facilitate the movement of the rectangular plate 23. The small handle 231 is located on one side of the fixing block 22. In this solution, the bottom plate 2 is fixed by inserting the ends of the two rectangular plates 23 into the inside of the two fixing brackets 13. By grasping the two small handles 231, the two rectangular plates 23 are moved closer to each other, which compresses the two springs 232, causing the ends of the two rectangular plates 23 to move out of the inside of the two fixing brackets 13. This allows the bottom plate 2 to be moved down for disassembly, which facilitates the removal of the filter screen 3 from the inside of the manifold box 1 for disassembly and also facilitates the cleaning of the precipitated solid particles on the bottom plate 2, thus improving convenience. Example

[0029] In another embodiment of this solution, refer to Figure 1 , Figure 2 and Figure 3 As shown, specifically, a connector plate 31 is fixed to the outer wall of the filter screen 3 for fixing the filter screen 3. The connector plate 31 is movably inserted into the inner side of the hollow plate 24. A second threaded hole 241 is provided on the outer wall of one side of the upper end of the hollow plate 24 for connecting the second screw 242. The second threaded hole 241 is in communication with the inner side of the hollow plate 24, and the second screw 242 is threadedly connected to the inner side of the second threaded hole 241. One end of the second screw 242 presses against the connector plate 31 to fix the filter screen 3. In this solution, by rotating the second screw 242, the second screw 242 can be moved away from the connector plate 31, and the connector plate 31 can be moved out from the inner side of the hollow plate 24 to complete the disassembly of the filter screen 3, which greatly facilitates the disassembly and replacement of the filter screen 3 and improves efficiency. Example

[0030] In another embodiment of this solution, refer to Figure 1 , Figure 2 and Figure 5 As shown, specifically, a sealing frame 21 is fixed to the top surface of the base plate 2 to prevent fluid leakage. The sealing frame 21 is made of flexible material and is located on the outside of the hollow plate 24. The sealing frame 21 is tightly fitted to the manifold 1. A first threaded hole 131 is provided in the middle of the bottom surface of the fixing frame 13 for threaded connection of the first screw 132. The first threaded hole 131 is connected to the inner side of the fixing frame 13. The first screw 132 is threadedly connected to the inner side of the first threaded hole 131, which can drive the rectangular plate 23 to move upward. In this solution, by rotating the first screw 132, the first screw 132 rotates and moves upward, which can push the rectangular plate 23 to move upward. The rectangular plate 23 drives the base plate 2 to move upward. The upward movement of the base plate 2 squeezes the sealing frame 21, causing the sealing frame 21 to deform and fit more tightly to the lower end of the manifold 1, thereby enhancing the sealing performance, effectively preventing fluid leakage during operation, and improving the safety of industrial production.

[0031] The working principle and usage process of this utility model:

[0032] In use, the fluid enters the inside of multiple inlet pipes 122 through the guide pipe 12, and then enters the inside of the manifold 1 through the multiple inlet pipes 122. After being filtered by the filter screen 3, the solid particles in the fluid are trapped inside the manifold 1 and finally settle on the bottom plate 2. The fluid with the solid particles removed enters the inside of the measuring pipe 11 through the filter screen 3. The flow meter body 111 can measure the flow rate and velocity of the fluid.

[0033] When the filter screen 3 needs to be replaced after a period of use, by grasping the two small handles 231, the two small handles 231 are moved towards each other, causing the two rectangular plates 23 to move closer to each other, compressing the two springs 232, so that the two rectangular plates 23 are moved out from the inside of the two fixing brackets 13 respectively, and the bottom plate 2 can be moved down, and the filter screen 3 can be moved out from the inside of the manifold box 1. Then, the second screw 242 is rotated so that one end of the second screw 242 no longer presses against the plug plate 31, and the plug plate 31 can be moved out from the inside of the hollow plate 24, completing the disassembly and replacement of the filter screen 3. At the same time, solid particles on the bottom plate 2 can be cleaned.

[0034] The sealing frame 21 on the top surface of the base plate 2 is fitted to the lower end of the manifold 1 to achieve a seal and prevent fluid leakage. By rotating the first screw 132, the first screw 132 rotates upward, pushing the rectangular plate 23 upward. The rectangular plate 23 drives the base plate 2 upward, thereby deforming the sealing frame 21 and fitting it more tightly to the manifold 1, which can enhance the sealing performance and strengthen the seal when needed.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A new type of industrial instrument differential pressure flowmeter comprising a current collecting box (1), characterized in that: The measuring tube (11) is fixedly inserted in the middle of one side wall of the collecting box (1), one end of the measuring tube (11) is located inside the collecting box (1), the other end of the measuring tube (11) is fixedly provided with a flowmeter body (111) on the outer wall, the flow guide pipe (12) is fixedly inserted in the middle of the other side wall of the collecting box (1), one end of the flow guide pipe (12) is located inside the collecting box (1), a fixing disc (121) is fixedly sleeved on the inner wall of one end of the flow guide pipe (12), a liquid inlet pipe (122) is fixed on one side wall of the fixing disc (121), the liquid inlet pipe (122) penetrates through the inner side of the flow guide pipe (12), the bottom plate (2) is arranged below the collecting box (1), the hollow plate (24) is fixed on the top surface of the bottom plate (2), the filter screen (3) is movably inserted in the inner side of the hollow plate (24), the filter screen (3) is located inside the collecting box (1) and is attached to one end of the measuring tube (11), the fixing block (22) is fixed in the middle of the bottom surface of the bottom plate (2), the rectangular grooves (221) are symmetrically arranged on the side walls of the fixing block (22), the rectangular plates (23) are movably inserted in the inner sides of the rectangular grooves (221), the fixing frames (13) are symmetrically fixed on the side walls of the lower end of the collecting box (1), and one end of the rectangular plate (23) is located inside the fixing frame (13).

2. A new type of differential pressure flow meter for industrial instruments as claimed in claim 1, wherein: The filter screen (3) is fixedly provided with the insertion plate (31), and the insertion plate (31) is movably inserted in the inner side of the hollow plate (24).

3. A new type of industrial instrument differential pressure flow meter according to claim 2, characterized in that: The second threaded hole (241) penetrates through the inner side of the hollow plate (24), and the second threaded hole (241) is in threaded connection with the second screw rod (242) in the inner side.

4. A new type of differential pressure flow meter for industrial instruments as claimed in claim 3, wherein: The other end of the rectangular plate (23) is fixedly provided with the spring (232), the spring (232) is located in the inner side of the rectangular groove (221), and one end of the spring (232) is fixed on the inner wall of the rectangular groove (221).

5. A new type of industrial instrument differential pressure flow meter according to claim 4, characterized in that: The bottom surface of the rectangular plate (23) is fixedly provided with the small handle (231), and the small handle (231) is located on one side of the fixing block (22).

6. A new type of industrial instrument differential pressure flow meter according to claim 5, characterized in that: The top surface of the bottom plate (2) is fixedly provided with the sealing frame (21), the sealing frame (21) is located outside the hollow plate (24), and the sealing frame (21) is tightly attached to the collecting box (1).

7. A new type of industrial instrument differential pressure flow meter according to claim 6, characterized in that: The bottom surface of the fixing frame (13) is provided with the first threaded hole (131), the first threaded hole (131) penetrates through the inner side of the fixing frame (13), and the first threaded hole (131) is in threaded connection with the first screw rod (132) in the inner side.

8. A new type of industrial instrument differential pressure flow meter according to claim 7, characterized in that: The sealing frame (21) is made of flexible material, and the liquid inlet pipe (122) is provided with a plurality of

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