An integrated switch valve structure's meter dust removal device and ultrasonic gas meter

Abstract

The utility model relates to ultrasonic gas meter technical field, concretely relates to a dust removal device in meter of integrated switch valve structure, including first casing, second casing, air inlet, switch valve, sedimentation chamber, backflow baffle and air outlet, the switch valve structure is integrated in dust removal device, has saved the installation space in meter, has solved the problem that dust removal device design installation space is limited at air inlet, overall structure is more compact, especially applicable to ultrasonic gas meter, has realized more optimal dust removal effect, has solved the problem that the existing technology is easy to appear and the pressure loss increases, that is, through being provided with the sedimentation chamber, can carry out the sedimentation and collection to the big particle's pollutant in the gas flow process, long -time use can remove in time, through being provided with backflow baffle, can make gas flow through backflow baffle and carry out one -step backflow, and the dust removal effect is better. Simultaneously still provides an ultrasonic gas meter including above -mentioned dust removal device in meter.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic gas meter technology, specifically to an in-meter dust removal device with an integrated switching valve structure and an ultrasonic gas meter. Background Technology

[0002] According to the national standard GB / T 39841-2021 "Ultrasonic Gas Meters," which specifies the dust removal or anti-pollutant performance requirements for ultrasonic gas meters, and also to ensure metering accuracy and service life, existing ultrasonic gas meters typically have a dust removal device installed at the air inlet. However, due to the presence of valves and other structures at the air inlet, installation space is limited. Currently, the common approach is to install a filter screen at the air inlet of the ultrasonic gas meter, such as a common metal filter screen, porous ceramic filter, or non-woven fiber filter element, to intercept larger impurity particles. However, traditional filter screens are prone to clogging with contaminants over long-term use, affecting normal dust removal. Furthermore, due to the limited gas flow area, pressure loss increases, resulting in less than ideal dust removal performance over extended periods. Utility Model Content

[0003] The purpose of this utility model is to provide an in-table dust removal device with an integrated switching valve structure to solve the existing technical problems in the background art.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: On one hand, this application provides an in-situ dust removal device with an integrated switching valve structure, including a first housing, a second housing, an air inlet, a switching valve, a sedimentation chamber, a reflux baffle, and an air outlet. The first housing and the second housing are fastened together and form a dust removal chamber inside. The air inlet is located at the top of the first housing and communicates with the inlet of the switching valve. The sedimentation chamber is located at the bottom of the dust removal chamber and is used for the sedimentation and collection of impurity particles. The reflux baffle is provided with a through hole that allows gas to pass through and is located between the first housing and the second housing. The air outlet is located on the side wall of the first housing and at the end of the reflux baffle.

[0005] Based on the above technical solution, a reflux chamber is formed between the sedimentation chamber and the reflux baffle, and a narrowing section is provided in the reflux chamber.

[0006] Based on the above technical solution, a dust removal rib is provided in the reflux chamber, and multiple dust removal ribs are provided on the bottom inner side wall of the first housing.

[0007] Based on the above technical solution, an air outlet chamber is formed between the return baffle and the first housing and the second housing, and multiple dust removal ribs are evenly arranged in the air outlet chamber.

[0008] Based on the above technical solution, the sedimentation chamber includes multiple horizontal and vertical partitions arranged in a cross pattern, and both the horizontal and vertical partitions are fixedly installed on the inner wall of the second shell.

[0009] Based on the above technical solution, the height of the vertical partition plate near the second shell sidewall in the sedimentation chamber is greater than the height of the vertical partition plate near the reflux baffle.

[0010] Based on the above technical solution, the first housing and the second housing are configured to be detachably connected.

[0011] Based on the above technical solution, the dust removal rib is made of one of the following materials: polyoxymethylene, acrylonitrile-butadiene-styrene copolymer, or polycarbonate / acrylonitrile-butadiene-styrene copolymer alloy.

[0012] Based on the above technical solution, the switching valve is configured as a screw valve.

[0013] On the other hand, this application also provides an ultrasonic gas meter, including the in-meter dust removal device with the integrated switching valve structure described above.

[0014] The beneficial effects of the technical solution provided by this utility model are as follows: This utility model provides an in-meter dust removal device with an integrated switching valve structure. By integrating the switching valve structure into the dust removal device, it saves installation space within the meter and solves the problem of limited installation space at the air inlet. The overall structure is more compact, making it particularly suitable for ultrasonic gas meters. It also achieves superior dust removal performance and solves the problems of clogging and increased pressure loss common in existing technologies. Specifically, by incorporating a sedimentation chamber, large particles of pollutants can be precipitated and collected during gas flow, allowing for timely removal over long-term use. Furthermore, the inclusion of a reflux baffle allows for one-step reflux of the gas as it flows through the baffle, further enhancing the dust removal effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is an internal cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the first shell in this utility model; Figure 4 This is a schematic diagram of the structure of the second shell in this utility model; Detailed Implementation The present invention will be further described below with reference to the accompanying drawings and embodiments: In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0016] In the description of this utility model, it should be understood that the terms "left", "right", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] like Figures 1 to 4 As shown, an in-situ dust removal device with an integrated switching valve structure includes a first housing 1, a second housing 2, an air inlet 3, a switching valve 4, a sedimentation chamber 5, a reflux baffle 6, and an air outlet 7. The first housing 1 and the second housing 2 are fastened together to form a dust removal chamber 10 inside. The air inlet 3 is located at the top of the first housing 1 and communicates with the inlet of the switching valve 4. The sedimentation chamber 5 is located at the bottom of the dust removal chamber 10 and is used for the sedimentation and collection of impurity particles. The reflux baffle 6 is provided with a through hole that allows gas to pass through and is located between the first housing 1 and the second housing 2. The air outlet 7 is located on the side wall of the first housing 1 and at the end of the reflux baffle 6.

[0018] This utility model provides an in-meter dust removal device with an integrated switching valve structure. The switching valve 4 is integrated within the dust removal device, saving installation space within the meter and solving the problem of limited installation space at the air inlet. The overall structure is more compact, making it particularly suitable for ultrasonic gas meters. It also achieves superior dust removal performance and solves the problems of clogging and increased pressure loss common in existing technologies. Specifically, by incorporating a sedimentation chamber 5, large particles of pollutants can be precipitated and collected during gas flow, allowing for timely removal over long-term use. Furthermore, the inclusion of a return baffle 6 allows for one-step return of the gas as it flows through the baffle, further enhancing the dust removal effect.

[0019] It should be noted that the above-mentioned beginning, end, or inlet and outlet are defined according to the gas flow direction in the ultrasonic gas meter, and are only for the convenience of understanding and description of the technical solution of this application, and do not constitute a limitation of this application.

[0020] Based on the above technical solution, a reflux chamber 8 is formed between the sedimentation chamber 5 and the reflux baffle 6, and a narrowing section 81 is provided in the reflux chamber 8.

[0021] By setting a narrowing section 81 in the reflux chamber 8, a certain flow restriction effect is played in the gas process. With the setting of the reflux baffle 6, most of the gas and pollutants will be refluxed, which maximizes the precipitation of impurity particles in the gas and improves the dust removal effect.

[0022] Based on the above technical solution, a dust removal rib 9 is provided in the reflux chamber 8. The dust removal rib 9 is provided on the inner side wall of the bottom end of the first housing 1 and there are multiple ribs.

[0023] Based on the above technical solution, an air outlet chamber 11 is formed between the return baffle 6, the first housing 1, and the second housing 2, and a plurality of dust removal ribs 9 are uniformly arranged in the air outlet chamber 11.

[0024] By installing dust removal ribs 9 in both the reflux chamber 8 and the exhaust chamber 11, fine pollutants can be adsorbed, resulting in better dust removal.

[0025] Based on the above technical solution, the dust removal rib 9 is made of one of the following materials: polyoxymethylene (POM), acrylonitrile-butadiene-styrene copolymer (ABS), or polycarbonate / acrylonitrile-butadiene-styrene copolymer alloy (PC+ABS). More preferably, using the above-mentioned plastic material can adsorb tiny pollutants in the gas, thus helping to achieve a better dust removal effect.

[0026] Based on the above technical solution, the sedimentation chamber 5 includes a plurality of cross-arranged horizontal partitions 51 and vertical partitions 52, and both the horizontal partitions 51 and the vertical partitions 52 are fixedly arranged on the inner side wall of the second housing 2.

[0027] Based on the above technical solution, the height of the vertical partition plate near the side wall of the second shell 2 in the sedimentation chamber 5 is greater than the height of the vertical partition plate near the reflux baffle 6.

[0028] By setting vertical baffles of different heights, especially with the vertical baffles near the second shell sidewall being taller than those near the return baffle, smoother gas flow can be ensured while reducing pressure loss.

[0029] Based on the above technical solution, the first housing 1 and the second housing 2 are configured to be detachably connected.

[0030] By making the first housing 1 and the second housing 2 detachably connected, installation is convenient and large particulate impurities deposited in the sedimentation chamber can be removed in a timely manner, making operation more convenient.

[0031] Based on the above technical solution, the switching valve 4 is configured as a screw valve.

[0032] This application also provides an ultrasonic gas meter, including the in-meter dust removal device with the integrated switching valve structure described above.

[0033] During operation, the internal dust removal device is installed inside the air inlet of the ultrasonic gas meter and located in the sealed cavity formed by the front and rear steel shells of the ultrasonic gas meter. When the ultrasonic gas meter is started, the switch valve 4 controls the flow of gas. When the switch valve 4 is open, natural gas enters the dust removal chamber 10 inside the dust removal device from the side of the air inlet 3. Larger pollutant particles will settle in the sedimentation chamber 5. When flowing through the narrow section 81 of the return chamber 8, the gas carrying pollutants will be returned under the action of the return baffle 6, further precipitating the pollutants. At the same time, smaller pollutants will be adsorbed on the dust removal ribs 9. The combined use achieves a better dust removal effect.

[0034] The foregoing has shown and described the basic principles and main features of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments. Therefore, the embodiments should be regarded as exemplary and non-limiting. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims within this utility model.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An in-surface dust removal device with an integrated switching valve structure, characterized in that, The device includes a first housing, a second housing, an air inlet, a switching valve, a settling chamber, a reflux baffle, and an air outlet. The first housing and the second housing are fastened together to form a dust removal chamber. The air inlet is located at the top of the first housing and communicates with the inlet of the switching valve. The settling chamber is located at the bottom of the dust removal chamber and is used for the settling and collection of impurity particles. The reflux baffle has a through hole that allows gas to pass through and is located between the first housing and the second housing. The air outlet is located on the side wall of the first housing and at the end of the reflux baffle.

2. The in-surface dust removal device with an integrated switching valve structure according to claim 1, characterized in that, A reflux chamber is formed between the sedimentation chamber and the reflux baffle, and a narrowing section is provided in the reflux chamber.

3. The in-surface dust removal device with an integrated switching valve structure according to claim 2, characterized in that, The reflux chamber is provided with dust removal ribs, which are located on the inner side wall of the bottom end of the first housing and there are multiple dust removal ribs.

4. The in-surface dust removal device with an integrated switching valve structure according to claim 1, characterized in that, An air outlet chamber is formed between the return baffle and the first and second housings, and multiple dust removal ribs are evenly arranged in the air outlet chamber.

5. The in-surface dust removal device with an integrated switching valve structure according to claim 1, characterized in that, The sedimentation chamber includes multiple horizontal and vertical partitions arranged in a cross pattern, and both the horizontal and vertical partitions are fixedly installed on the inner wall of the second shell.

6. The in-surface dust removal device with an integrated switching valve structure according to claim 5, characterized in that, The height of the vertical partition plate near the second shell sidewall in the sedimentation chamber is greater than the height of the vertical partition plate near the reflux baffle.

7. The in-surface dust removal device with an integrated switching valve structure according to claim 1, characterized in that, The first housing and the second housing are configured to be detachably connected.

8. The in-surface dust removal device with an integrated switching valve structure according to claim 3 or 4, characterized in that, The dust removal rib is made of one of the following materials: polyoxymethylene, acrylonitrile-butadiene-styrene copolymer, or polycarbonate / acrylonitrile-butadiene-styrene copolymer alloy.

9. The in-surface dust removal device with an integrated switching valve structure according to claim 1, characterized in that, The switching valve is configured as a screw valve.

10. An ultrasonic gas meter, characterized in that, The in-table dust removal device includes the integrated switching valve structure as described in any one of claims 1 to 9.

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