Ventilation flow detector

Abstract

The utility model provides a ventilation flow detector, which belongs to the technical field of flow detection, and comprises a box body, a bottom plate arranged at the bottom of the box body, a buffer tank arranged at the top of the bottom plate, and a clamp assembly arranged at the top of the buffer tank, the clamp assembly comprises a bottom die used for installing an air valve to be detected, and the top of the buffer tank is connected with the bottom die. A water column meter is arranged on one side, close to the buffer tank, of the box body, one end of the buffer tank is connected with the water column meter, and the other end is connected with an air source; all functional components are integrated and mounted on the box body, so that the overall occupied area is reduced, and the device is suitable for a laboratory with limited space; through the arrangement of the clamp assembly, the replacement of the air valve to be detected becomes more convenient, and the convenience of experimental operation is improved.

Description

Technical Field

[0001] This utility model belongs to the field of flow detection technology, and more specifically, it relates to a ventilation flow detector. Background Technology

[0002] In laboratory research, measuring gas flow rate helps researchers obtain reliable experimental data and advance the research process.

[0003] Currently, there are various ventilation flow detection devices on the market, whose working principles cover differential pressure, volumetric, turbine, and mass flow types. However, existing flow detectors usually involve installing functional components on a platform, which occupies a lot of experimental space and affects the convenience of experimental operation. Furthermore, the valves being tested are mostly assembled with fixed connections, and when replacing the valves, the experimenters need to disassemble them with tools, further reducing the convenience of experimental operation. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an airflow detector. This addresses the issues of existing flow detectors occupying significant space on the experimental platform, impacting operational convenience, and the fact that most valves being tested are assembled with fixed connections, requiring operators to disassemble and replace them with tools, further reducing convenience.

[0005] The purpose and effectiveness of this ventilation flow rate detector are achieved through the following specific technical means:

[0006] A ventilation flow meter includes a housing with a base plate at the bottom and a buffer tank at the top. A clamping assembly is located at the top of the buffer tank, and the clamping assembly includes a bottom mold for installing a valve to be tested. The bottom mold is connected to the top of the buffer tank. A water column meter is located on the side of the housing near the buffer tank. One end of the buffer tank is connected to the water column meter, and the other end is connected to a gas source.

[0007] According to a preferred embodiment, the clamping assembly further includes a pressure core, a placement groove is provided on the top of the bottom mold, an external thread is provided on the outer side of the pressure core, an internal thread is provided on the inner side of the placement groove, and the pressure core is detachably threadedly connected to the placement groove.

[0008] According to a preferred embodiment, the bottom of the bottom mold has a through hole for connection with a connector, the bottom of the placement groove is provided with a filter plate corresponding to the through hole, the top of the filter plate is provided with a rubber buffer pad, and the top and bottom of the rubber buffer pad are also provided with rubber pads.

[0009] According to a preferred embodiment, a three-way valve is provided on the top of the buffer tank, with a vent valve at one end and a vent valve at the other end connected to the connector.

[0010] According to a preferred embodiment, a mounting groove is provided on the back of the box, and a pressure regulating valve is provided in the mounting groove. A through hole is provided on the front of the box, and a pressure regulating knob passes through the through hole and is connected to the pressure regulating valve. A gas source is provided on one side of the box, and one side of the gas source is connected to the pressure regulating valve, while the other side can be connected to an external gas cylinder or gas line.

[0011] According to a preferred embodiment, a flow meter is also provided on the front of the housing, the inlet end of the flow meter is connected to the pressure regulating valve, and the outlet end of the flow meter is connected to the buffer tank.

[0012] According to a preferred embodiment, the opening of the mounting groove is provided with an operable door panel, and the door panel is provided with an embedded handle.

[0013] According to a preferred embodiment, both the housing and the base plate are made of stainless steel, and support feet are provided at the four corners of the bottom of the base plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Adopting a compact box-type structure, all functional components are integrated and installed on the box, reducing the overall footprint. Compared with the traditional method of installing the testing instrument on the platform, by distributing and installing the functional components according to the three-dimensional space of the box, the space occupied by the instrument is reduced, providing more operating space for the experimenters and improving the convenience of experimental operation. It is suitable for laboratories with limited space.

[0016] 2. The fixture assembly makes the replacement of the valve under test more convenient. The valve under test is placed in the placement slot on the top of the bottom mold. The pressure core is detachably threaded to the internal thread on the inside of the placement slot through the external thread. The experimenter can remove the pressure core from the placement slot by rotating it, which makes it easy to install or remove the valve. When it is necessary to fix the valve under test, tightening the pressure core will clamp and fix the valve under test between the placement slot and the pressure core. This saves valve replacement time, avoids the cumbersome assembly method of traditional fixed connection, and further improves the convenience of experimental operation.

[0017] 3. The filter plate allows for filtration of the gas entering through the connector, removing impurities and preventing them from affecting detection accuracy. The rubber buffer pad on top of the filter plate and the rubber pads on the upper and lower sides not only buffer gas impact but also provide a seal to prevent gas leakage. In addition, the pressure regulating valve in the mounting slot can adjust the gas pressure entering from the gas source, and the flow meter on the front allows for direct monitoring of the intake flow rate. The hinged door and embedded handle at the opening of the mounting slot facilitate maintenance of the functional components installed inside, improving stability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the box body and door panel after assembly in this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the box body and door panel after disassembly in this utility model;

[0021] Figure 4 This is a schematic diagram of the assembled clamp assembly in this utility model;

[0022] Figure 5 for Figure 4 A schematic diagram of the disassembled structure.

[0023] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0024] 11. Housing; 12. Base plate; 13. Buffer tank; 14. Water column gauge; 15. Air source; 16. Three-way valve; 17. Vent valve; 18. Vent valve; 19. Mounting slot; 20. Pressure regulating valve; 21. Pressure regulating knob; 23. Flow meter; 24. Door panel; 25. Embedded handle; 26. Support foot; 31. Bottom mold; 32. Pressure core; 33. Placement slot; 34. External thread; 35. Connector; 36. Air filter; 37. Rubber buffer pad. Detailed Implementation

[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0026] Example:

[0027] As attached Figure 1 To be continued Figure 5 As shown:

[0028] This utility model provides an airflow detector, including a housing 11, a base plate 12 at the bottom of the housing 11, and a buffer tank 13 at the top of the base plate 12. The buffer tank 13 stabilizes the airflow, reducing the impact of airflow fluctuations on the test results and ensuring the accuracy of the test data. A clamping assembly is provided on the top of the buffer tank 13, including a bottom mold 31 for installing the valve to be tested. The bottom mold 31 is connected to the top of the buffer tank 13. A water column gauge 14 is installed on the side of the housing 11 near the buffer tank 13. One end of the buffer tank 13 is connected to the water column gauge 14 through a pipe, and the other end is connected to a gas source 15 to provide a gas source for the test process. The compact housing structure integrates all functional components on the housing 11. Unlike the traditional method of dispersing the detectors on a platform, this design distributes the functional components according to the three-dimensional space of the housing 11, reducing the overall footprint of the instrument, providing more operating space for the experimenters, improving the convenience of experimental operation, and making it suitable for laboratories with limited space.

[0029] Please see as follows Figure 4 and Figure 5 As shown, the fixture assembly also includes a pressure core 32. A placement groove 33 is opened on the top of the bottom mold 31 to place the gas valve to be tested. The pressure core 32 has an external thread 34 on its outer side, and the placement groove 33 has a corresponding internal thread on its inner side. When the experimenter performs the gas valve replacement operation, the pressure core 32 is rotated to remove or screw it into the placement groove 33. After the pressure core 32 is removed, the gas valve can be easily installed or removed. When it is necessary to fix the gas valve to be tested, the pressure core 32 is tightened, and the pressure core 32 cooperates with the placement groove 33 to clamp and fix the gas valve to be tested between the two. Compared with the traditional fixed connection assembly method, the operation steps in the gas valve replacement process are reduced, the gas valve replacement time is saved, and the convenience of experimental operation is further improved.

[0030] The bottom of the bottom mold 31 has a through hole that connects to the connector 35. The bottom of the placement groove 33 is provided with a filter plate 36 corresponding to the through hole. This filter plate 36 can filter the air entering the placement groove 33 through the through hole, remove impurities from the gas, and prevent them from affecting the detection accuracy. The top of the filter plate 36 is provided with a rubber buffer pad 37. Both the top and bottom of the rubber buffer pad 37 are also provided with rubber pads. This not only buffers the gas impact and reduces the damage of the gas to the detection components, but also plays a sealing role to prevent gas leakage.

[0031] Please see as follows Figure 3 and Figure 5As shown, a three-way valve 16 is installed on the top of the buffer tank 13. One end of the three-way valve 16 is equipped with a vent valve 17. When the test is completed or the pressure needs to be adjusted, the gas in the buffer tank 13 can be released by opening the vent valve 17. The other end of the three-way valve 16 is connected to a vent valve 18, which is connected to a connector 35 to control the flow of gas from the buffer tank 13 to the bottom mold 31. An installation groove 19 is opened on the back of the box body 11. A pressure regulating valve 20 is installed in the installation groove 19. The pressure regulating valve 20 is fixed to the preset installation position in the installation groove 19 by bolts. A through hole is opened on the front of the box body 11. The pressure regulating knob 21 passes through the through hole and is connected to the pressure regulating valve 20. A gas source 15 is installed on one side of the box body 11. One side of the gas source 15 is connected to the pressure regulating valve 20 through a pipe. The other side is equipped with a quick connector, which can be easily connected to an external gas cylinder or gas line. The experimenter can adjust the gas pressure entering from the gas source 15 by rotating the pressure regulating knob 21 to meet the gas pressure requirements of different test scenarios.

[0032] Please see as follows Figure 1 and Figure 3 As shown, a flow meter 23 is also installed on the front of the housing 11. The inlet of the flow meter 23 is connected to the pressure regulating valve 20 through a pipe, and the outlet of the flow meter 23 is also connected to the buffer tank 13 through a pipe. The inlet flow rate can be directly viewed through the flow meter 23. A door panel 24 that can be opened and closed is installed at the opening of the mounting slot 19. The door panel 24 is connected to the housing 11 through a hinge. An embedded handle 25 is provided on the door panel 24. When it is necessary to maintain the functional components installed inside the mounting slot 19, the experimenter can open the door panel 24 by pulling the embedded handle 25, so as to conveniently perform maintenance, replacement and other operations on the internal components, ensuring the stable operation of the instrument. The housing 11 and the base plate 12 are both made of stainless steel and are connected by welding to ensure structural stability and have strong corrosion resistance, which can resist the corrosion of various gas environments on the instrument. Support feet 26 are installed at the four corners of the bottom of the base plate 12 to reduce the interference of external vibration on the device.

[0033] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments suitable for various modifications.

Claims

1. A flow rate detector for ventilation gas, characterized in that: The device includes a housing (11), a bottom plate (12) at the bottom of the housing (11), a buffer tank (13) at the top of the bottom plate (12), a clamping assembly at the top of the buffer tank (13), the clamping assembly including a bottom mold (31) for installing the air valve to be tested, the bottom mold (31) being connected to the top of the buffer tank (13), a water column gauge (14) being provided on the side of the housing (11) near the buffer tank (13), one end of the buffer tank (13) being connected to the water column gauge (14), and the other end being connected to an air source (15).

2. The ventilation flow rate detector according to claim 1, characterized by: The clamping assembly also includes a pressure core (32), the bottom mold (31) has a placement groove (33) on its top, the pressure core (32) has an external thread (34) on its outer side, the placement groove (33) has an internal thread on its inner side, and the pressure core (32) and the placement groove (33) are detachably threaded together.

3. The ventilation flow rate detector according to claim 2, characterized in that: The bottom mold (31) has a through hole at the bottom that connects to the connector (35). The bottom of the placement groove (33) is provided with a filter plate (36) corresponding to the through hole. The top of the filter plate (36) is provided with a rubber buffer pad (37). The top and bottom of the rubber buffer pad (37) are also provided with rubber pads.

4. The air flow rate detector according to claim 3, characterized by: The buffer tank (13) is equipped with a three-way valve (16) at the top. One end of the three-way valve (16) is equipped with a vent valve (17), and the other end is equipped with a vent valve (18) which is connected to the connector (35).

5. The ventilation flow rate detector according to claim 1, characterized by: The back of the housing (11) is provided with an installation groove (19), and a pressure regulating valve (20) is provided in the installation groove (19). The front of the housing (11) is provided with a through hole, and the pressure regulating knob (21) passes through the through hole and is connected to the pressure regulating valve (20). The gas source (15) is provided on one side of the housing (11). One side of the gas source (15) is connected to the pressure regulating valve (20), and the other side can be connected to an external gas cylinder or gas line.

6. The air flow rate detector according to claim 5, characterized by: A flow meter (23) is also provided on the front of the housing (11). The inlet end of the flow meter (23) is connected to the pressure regulating valve (20), and the outlet end of the flow meter (23) is connected to the buffer tank (13).

7. The air flow rate detector according to claim 5, characterized by: The opening of the mounting groove (19) is provided with a door panel (24) that can be opened and closed, and the door panel (24) is provided with an embedded handle (25).

8. The ventilation flow rate detector according to claim 1, characterized by: Both the housing (11) and the base plate (12) are made of stainless steel, and the four corners of the bottom of the base plate (12) are provided with support feet (26).

Images