Flow meter with exhaust structure

Abstract

The utility model belongs to flowmeter technical field especially has a flowmeter with exhaust structure, including flowmeter body, the top vertical installation of flowmeter body is the head stand, the upper side fixedly connected of head stand has the table body, the one side installation of table body has detection mechanism, installs the exhaust valve for automatic removal internal gas on the detection mechanism, The outside of the communication pipeline is installed with the stop valve through the fastening end, the outside of one side stop valve is connected with the inlet end, the outside of the other side stop valve is connected with the discharge end, The front end of inlet end is installed with filter mechanism, the automatic exhaust valve is directly integrated on the detection mechanism that is most easy to collect gas, realizes the real -time identification and removal of gas, does not need manual intervention, also does not need to interrupt the technological process, fundamentally avoids the production loss that causes because of the stop exhaust, guarantees the measurement cavity always fills up single -phase medium simultaneously, effectively eliminates the interference of gas to detection mechanism.

Description

Technical Field

[0001] This utility model belongs to the field of flow meter technology, and specifically relates to a flow meter with an exhaust structure. Background Technology

[0002] In industrial production, flow meters are crucial instruments for measuring the flow rate of fluids in pipelines. However, many existing flow meters (such as turbine flow meters and gear flow meters, which rely on sensing mechanisms to measure fluid movement) face two common and serious problems in practical use:

[0003] During the initial installation of the flow meter or when gas is mixed into the medium, gas tends to accumulate in the upper chamber where the flow meter and detection mechanism are located. Since gas is compressible and its density is much lower than that of liquid, its presence can interfere with the detection mechanism's normal sensing of fluid velocity or volume, leading to significant deviations in measurement values, drastic fluctuations in displayed values, or even complete failure, severely impacting the accuracy and reliability of the measurement. Furthermore, pipeline fluids often contain impurities such as rust, welding slag, and particulate matter. These impurities enter the flow meter along with the fluid, wearing down the precision detection mechanism and shortening its service life. More seriously, even tiny impurities can clog moving parts of the detection mechanism or connected precision components, causing the equipment to seize up or malfunction.

[0004] In existing technologies, solving the exhaust problem usually requires shutting down the machine and having professionals manually open the exhaust valve, which is a cumbersome process that affects production continuity. As for impurity problems, large filters are often installed at the front end of the pipeline system, which have limited filtration effects and are inconvenient to maintain, and cannot provide direct and precise protection for the flow meter. Therefore, we propose a flow meter with an exhaust structure. Utility Model Content

[0005] To address the issues raised in the prior art, which typically require machine shutdown and manual opening of the vent valve by professionals to solve the venting problem—a cumbersome process that disrupts production continuity—this invention provides a flow meter with a venting structure. Furthermore, for impurities, large filters are often installed only at the front end of the pipeline system, offering limited filtration effectiveness and inconvenient maintenance, failing to provide direct and precise protection for the flow meter.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a flow meter with an exhaust structure, comprising a flow meter body, a meter head column vertically mounted on the top of the flow meter body, a meter body fixedly connected above the meter head column, a detection mechanism mounted on one side of the meter body, and an exhaust valve for automatically venting internal gas mounted on the detection mechanism.

[0007] Both sides of the flow meter body are connected to connecting pipes. A shut-off valve is installed on the outside of the connecting pipe through a fastening end. An inlet end is connected to the outside of the shut-off valve on one side, and an outlet end is connected to the outside of the shut-off valve on the other side. A filter mechanism is installed at the front end of the inlet end.

[0008] As a preferred embodiment of the flow meter with an exhaust structure of the present invention, one end of the filter mechanism is provided with a threaded joint, and a primary filter plate, a secondary filter plate and a tertiary filter plate are sequentially installed inside the filter mechanism along the medium flow direction.

[0009] As a preferred embodiment of the flow meter with an exhaust structure according to this utility model, both the primary filter plate and the tertiary filter plate are mesh structures, and the filter holes of the tertiary filter plate are smaller than those of the primary filter plate.

[0010] As a preferred embodiment of the flow meter with an exhaust structure according to this utility model, the secondary filter plate is a filter element filled with adsorbent material.

[0011] As a preferred embodiment of the flow meter with an exhaust structure according to this utility model, the exhaust valve is an automatic float-type air valve, which is installed at the highest point of the detection mechanism.

[0012] As a preferred embodiment of the flow meter with an exhaust structure according to this utility model, the fastening end is a flange joint.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: In this application, the automatic exhaust valve is directly integrated into the detection mechanism, which is most prone to gas collection, realizing real-time and automatic gas identification and removal. This process does not require manual intervention or interruption of the process flow, fundamentally avoiding production losses caused by shutdown for exhaust. At the same time, it ensures that the measuring chamber is always filled with a single-phase medium, effectively eliminating gas interference with the detection mechanism. A multi-stage filtration mechanism is integrated before the flow meter inlet, which can more effectively block and adsorb impurities, providing direct and precise protection for the precision detection mechanism and exhaust valve. This significantly reduces the risk of wear and blockage, and prevents the problem that to solve the exhaust problem, it is usually necessary to shut down the machine and have professionals manually open the exhaust valve, which is a cumbersome process that affects the continuity of production. For impurity problems, large filters are often only installed at the front end of the pipeline system, which have limited filtration effect and are inconvenient to maintain, and cannot provide direct and precise protection for the flow meter. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the filter mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the filter plate of this utility model.

[0018] In the diagram: 1. Flow meter body; 2. Meter head column; 3. Meter body; 4. Detection mechanism; 5. Exhaust valve; 6. Connecting pipe; 7. Fastening end; 8. Shut-off valve; 9. Inlet end; 10. Outlet end; 11. Filtering mechanism; 12. Threaded joint; 13. Primary filter plate; 14. Secondary filter plate; 15. Tertiary filter plate. Detailed Implementation

[0019] 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 scope of protection of the present utility model. Embodiment 1

[0020] like Figures 1-3 As shown;

[0021] A flow meter with an exhaust structure includes a flow meter body 1, a meter head column 2 vertically mounted on the top of the flow meter body 1, a meter body 3 fixedly connected above the meter head column 2, a detection mechanism 4 installed on one side of the meter body 3, and an exhaust valve 5 for automatically venting internal gas installed on the detection mechanism 4; both sides of the flow meter body 1 are connected to connecting pipes 6, and a shut-off valve 8 is installed on the outside of the connecting pipes 6 through a fastening end 7; an inlet end 9 is connected to the outside of one shut-off valve 8, and an outlet end 10 is connected to the outside of the other shut-off valve 8; a filter mechanism 11 is installed at the front end of the inlet end 9.

[0022] In this implementation scheme: the automatic exhaust valve 5 is directly integrated into the detection mechanism 4, which is most prone to gas collection, realizing real-time and automatic gas identification and removal. This process does not require manual intervention or interruption of the process flow, fundamentally avoiding production losses caused by shutdown for exhaust. At the same time, it ensures that the measuring chamber is always filled with a single-phase medium, effectively eliminating gas interference with the detection mechanism 4. A multi-stage filtration mechanism 11 is integrated before the inlet end 9 of the flow meter, which can more effectively block and adsorb impurities, providing direct and precise protection for the precision detection mechanism 4 and the exhaust valve 5, significantly reducing the risk of wear and blockage.

[0023] In an optional embodiment, a threaded joint 12 is provided at one end of the filter mechanism 11, and a primary filter plate 13, a secondary filter plate 14 and a tertiary filter plate 15 are sequentially installed inside the filter mechanism 11 along the medium flow direction.

[0024] In this implementation scheme: the filter mechanism 11 can be easily installed on or removed from the pipeline through the threaded joint 12, which facilitates daily maintenance or replacement. The first-stage filter plate 13, the second-stage filter plate 14 and the third-stage filter plate 15 arranged in sequence inside form a gradient filtration system from coarse to fine, which can intercept impurities of different particle sizes in layers, greatly improving filtration efficiency and effect, and effectively protecting the downstream detection mechanism 4 and the exhaust valve 5.

[0025] In an optional embodiment, both the primary filter plate 13 and the tertiary filter plate 15 are mesh structures, and the filter holes of the tertiary filter plate 15 are smaller than those of the primary filter plate 13.

[0026] In this implementation scheme: the primary filter plate 13 serves as the initial line of defense, first intercepting larger particles such as welding slag and rust to prevent them from quickly clogging the subsequent fine filter layer. The tertiary filter plate 15 serves as the final barrier, filtering out even finer particles. The mesh structure design with decreasing filter holes achieves the stepwise capture of impurities, which not only avoids the problem of single-stage filtration being easily broken down, but also ensures that the fluid maintains reasonable flow resistance when passing through the filter layer.

[0027] In an optional embodiment, the secondary filter plate 14 is a filter element filled with adsorbent material.

[0028] In this implementation scheme, the secondary filter plate 14 is filled with a filter element containing adsorbent material, which adds chemical adsorption function to its mechanical filtration. This effectively adsorbs fine impurities, colloidal substances, or certain specific chemical components in the fluid, which is difficult to achieve through the purely physical sieving of the primary filter plate 13 and the tertiary filter plate 15. This design significantly improves the comprehensiveness of filtration.

[0029] In an optional embodiment, the exhaust valve 5 is an automatic float-type air valve, which is installed at the highest point of the detection mechanism 4.

[0030] In this implementation scheme: the exhaust valve 5 is an automatic float type, which uses the principle of buoyancy to achieve automatic opening and closing. It has a simple structure, high reliability, and requires no external power or control. Its installation position is limited to the highest point of the detection mechanism 4, which conforms to the physical law of gas accumulation. This ensures that any gas entering the area can be sensed and discharged immediately, thereby maximizing exhaust efficiency and fundamentally eliminating the impact of cavitation on measurement accuracy.

[0031] In an optional embodiment, the fastening end 7 is a flange joint.

[0032] In this implementation scheme, the flange joint provides a robust, reliable connection with excellent sealing performance. The connection can withstand high pipeline pressure, effectively prevent leakage, and is easy to tighten and loosen using standard tools, greatly improving the stability of the connection between the flow meter and the pipeline system and the ease of maintenance.

[0033] Working principle:

[0034] The fluid to be measured first flows in from the inlet 9. Before entering the main body of the flow meter, the fluid first passes through a specially designed filtration mechanism 11. The fluid passes through the internal primary filter plate 13, secondary filter plate 14 and tertiary filter plate 15 in sequence. The primary filter plate 13 and tertiary filter plate 15 are mesh structures with decreasing filter holes in sequence for coarse filtration and fine filtration. The secondary filter plate 14 is a magnetic filter plate or a filter element filled with adsorbent material. Its function is to adsorb magnetic impurities such as iron filings or other small particles in the fluid. The clean fluid after three-stage filtration minimizes the wear and blockage of impurities on the subsequent detection mechanism 4 and exhaust valve 5.

[0035] Clean fluid enters the flow meter body 1 through the open shut-off valve 8 and the connecting pipe 6. The fluid flows through the detection mechanism 4, such as a turbine or gear, which drives it to generate a signal proportional to the flow rate, thereby completing the flow measurement. The measured fluid finally flows out from the discharge end 10 through the shut-off valve 8 and the connecting pipe 6 on the other side.

[0036] During operation, any gas entering the system or precipitating from the medium, due to its lower density than liquid, will naturally rise and accumulate at the highest point of the flowmeter chamber, i.e., where the detection mechanism 4 is located. The exhaust valve 5 is directly installed on the detection mechanism 4, precisely at the location where gas most easily accumulates. When the gas accumulates to a certain amount, the float or diaphragm mechanism inside the exhaust valve 5 automatically opens under the action of changes in air pressure or liquid level, discharging the gas to the outside atmosphere. By directly integrating the automatic exhaust valve 5 onto the detection mechanism 4, where gas is most easily collected, in a closed pipe or container filled with fluid, because the density of gas is much lower than that of liquid... The liquid will rise naturally due to buoyancy and eventually accumulate in the detection mechanism 4. When the chamber of the detection mechanism 4 is full of liquid, the float in the exhaust valve 5 is in a high position under the action of buoyancy. It tightly blocks the exhaust hole through the lever mechanism to prevent liquid leakage. When the gas accumulates in the detection mechanism 4, it will occupy the space in the upper part of the chamber, causing the liquid level to drop. As the liquid level drops, the float will drop due to loss of buoyancy. The drop of the float will drive the sealing gasket away from the exhaust hole through the lever mechanism, thereby opening the exhaust channel. After the gas is discharged, the liquid quickly fills the valve chamber, and the exhaust valve 5 will automatically close to prevent medium leakage.

[0037] When it is necessary to inspect and repair the flow meter, exhaust valve 5, or filter mechanism 11, the two shut-off valves 8 at the inlet end 9 and the outlet end 10 can be closed to completely isolate the flow meter body from the main pipeline system. At this time, online maintenance, replacement, or cleaning of the filter mechanism 11 can be performed. The whole process does not require stopping the operation of the entire pipeline system, which greatly facilitates the maintenance work.

[0038] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are 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 flow meter with an exhaust structure, comprising a flow meter body (1), characterized in that: The flow meter body (1) is vertically mounted with a meter head column (2), and a meter body (3) is fixedly connected above the meter head column (2). A detection mechanism (4) is installed on one side of the meter body (3), and an exhaust valve (5) for automatically venting internal gas is installed on the detection mechanism (4). Both sides of the flow meter body (1) are connected to connecting pipes (6). A shut-off valve (8) is installed on the outside of the connecting pipe (6) through a fastening end (7). An inlet end (9) is connected to the outside of the shut-off valve (8) on one side, and an outlet end (10) is connected to the outside of the shut-off valve (8) on the other side. A filter mechanism (11) is installed at the front end of the inlet end (9).

2. The flow meter with an exhaust structure according to claim 1, characterized in that: One end of the filter mechanism (11) is provided with a threaded joint (12), and the filter mechanism (11) is provided with a first-stage filter plate (13), a second-stage filter plate (14) and a third-stage filter plate (15) sequentially installed inside the filter mechanism (11) along the medium flow direction.

3. The flow meter with an exhaust structure according to claim 2, characterized in that: Both the primary filter plate (13) and the tertiary filter plate (15) are mesh structures, and the filter holes of the tertiary filter plate (15) are smaller than those of the primary filter plate (13).

4. The flow meter with an exhaust structure according to claim 2, characterized in that: The secondary filter plate (14) is a filter element filled with adsorbent material.

5. The flow meter with an exhaust structure according to claim 1, characterized in that: The exhaust valve (5) is an automatic float-type air valve, and its installation position is located at the highest point of the detection mechanism (4).

6. The flow meter with an exhaust structure according to claim 1, characterized in that: The fastening end (7) is a flange joint.

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