Filtering device and flow detection equipment

Abstract

The utility model discloses a filtering device and flow detection equipment, and belongs to the technical field of flow detection equipment, the filtering device comprises a flow collecting piece and a filtering piece, the flow collecting piece is provided with an air outlet, and the air outlet is used for being communicated with an air inlet of a flow meter; and the filtering piece is connected with the flow collecting piece and is used for filtering gas entering the inner cavity. According to the flow meter, the filtering piece is arranged to filter the gas entering the flow collecting piece, then the gas outlet of the flow collecting piece communicates with the gas inlet hole of the flow meter, the gas entering the gas inlet hole of the flow meter is filtered, and therefore the process that the flow meter is damaged due to dust entering is delayed, and the service life of the flow meter is prolonged. The flow detection equipment comprises a filtering device and further comprises a flow meter, the flow meter is provided with an air inlet hole and an air outlet hole, and the air inlet hole is communicated with an air outlet; the flow detection equipment comprises all the technical characteristics and beneficial effects of the filtering device, and dust can be prevented from entering the flow meter.

Description

Technical Field

[0001] The present application belongs to the technical field of flow detection equipment, and specifically relates to a filtering device and a flow detection equipment. Background Art

[0002] In order to confirm whether the negative pressure pipeline is working properly and whether there are any leaks, it is necessary to test the negative pressure pipeline. In current technology, a blockage detection tool is usually used to connect the negative pressure pipeline and detect the flow rate in the negative pressure pipeline to determine whether the negative pressure pipeline is working properly.

[0003] The flowmeter in the blockage detection fixture is a precision sensor, and foreign matter entering the flowmeter's air inlet can easily damage the flowmeter. However, in some working environments, the air surrounding the negative pressure pipe contains dust. When the blockage detection fixture is used to detect blockage in the negative pressure pipe, dust can enter the flowmeter's air inlet, causing damage to the flowmeter. Utility Model Content

[0004] Purpose of the utility model: The present application provides a filtering device for solving the technical problem that the flow meter is easily damaged when detecting the flow in a negative pressure pipeline; another purpose of the present application is to provide a flow detection device.

[0005] Technical solution: This application provides a filtering device, comprising:

[0006] A flow collecting member, the flow collecting member having an inner cavity and an air outlet, the inner cavity and the air outlet being in communication, and the air outlet being used to be in communication with an air inlet of the flow meter;

[0007] A filter element is connected to the flow collecting element, and is used to filter the gas entering the inner cavity.

[0008] In some embodiments, the filtering device has multiple air outlets, multiple air outlets are connected to the inner cavity, multiple air outlets are arranged at intervals along the extension direction of the collecting part, and multiple air inlets of the flow meters correspond to the multiple air outlets one by one.

[0009] In some embodiments, the collecting member has at least two air inlets, and the air inlets are respectively provided at both ends of the collecting member in the extension direction, and at least two of the air inlets are respectively located at both ends of the collecting member in the extension direction, and the filter member is provided at the air inlet of the collecting member to filter the gas entering the air inlet.

[0010] In some embodiments, the filter device further comprises a pressing plate, which is detachably connected to the current collecting member and presses the filter member to the current collecting member.

[0011] In some embodiments, the current collecting part includes a connecting structure, which is connected to the current collecting part. The pressure plate at the air inlet is located on the side of the connecting structure away from the current collecting part, and the pressure plate is detachably connected to the connecting structure. The filter element is clamped between the pressure plate and the connecting structure.

[0012] In some embodiments, the filtering device further includes a quick-change device, the quick-change device is connected to the flow collecting member, the quick-change device is arranged at the air outlet, and the quick-change device is used to connect to a flow meter.

[0013] In some embodiments, the filtering device further includes an air pipe, one end of the air pipe is connected to the air outlet, and the other end of the air pipe is used to connect to the air inlet of the flow meter.

[0014] In some embodiments, the filter device further includes a fixing portion connected to an outer wall of the current collecting member, and the fixing portion is used to fix the current collecting member.

[0015] In some embodiments, the filter element is filled in the inner cavity of the current collecting element, and the filter element is a porous structure.

[0016] Correspondingly, the present application also provides a flow detection device, including a filtering device as described in any one of the above embodiments, and the flow detection device also includes a flow meter, the flow meter having an air inlet and an air outlet, the air inlet being connected to the air outlet of the collecting part; the air outlet is used to connect to the pipeline being tested.

[0017] Beneficial Effects: Compared to the prior art, the filtering device provided in the embodiments of the present application includes a flow collector and a filter element. The flow collector has an air outlet for connecting to the air inlet of the flow meter. The filter element is connected to the flow collector and is used to filter the gas entering the flow meter. The present application filters the gas entering the flow collector by providing a filter element, and then connects the air outlet of the flow collector to the air inlet of the flow meter to filter the gas entering the air inlet of the flow meter, thereby delaying the damage of the flow meter due to the ingress of dust and thereby extending the service life of the flow meter.

[0018] An embodiment of the present application also provides a flow detection device, which includes the filtering device described in any one of the above embodiments. The flow detection device includes all the technical features and beneficial effects of the above filtering device, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0020] Figure 1A front view of the filtering device provided in an embodiment of the present application;

[0021] Figure 2 A side view of a filtering device provided in an embodiment of the present application;

[0022] Figure 3 A top view of the filtering device provided in an embodiment of the present application;

[0023] Figure 4 for Figure 2 Cross-sectional view at AA in the middle;

[0024] Figure 5 for Figure 2 Cross-sectional view at the middle BB;

[0025] Figure 6 for Figure 3 Detailed image in middle frame C;

[0026] Figure 7 A schematic diagram of the structure of a flow detection device provided in an embodiment of the present application;

[0027] Figure 8 A front view of the flow detection device provided in an embodiment of the present application;

[0028] Figure 9 A side view of the flow detection device provided in an embodiment of the present application.

[0029] Figure markings, 1-filter device, 11-collecting part, 111-air outlet, 112-air inlet, 113-connecting structure, 12-filter element, 13-pressure plate, 14-quick change device, 15-trachea, 16-fixing part, 17-trachea, 2-flow meter, 21-air inlet, 3-negative pressure pipe, 4-support frame. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly specified and specifically limited. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0032] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application.

[0033] In order to confirm whether the negative pressure pipe 3 is working properly and whether there are any leaks, it is necessary to test the negative pressure pipe 3. In the current technology, a blockage detection tool is usually used to connect the negative pressure pipe 3, and the flow rate in the negative pressure pipe 3 is detected to determine whether the negative pressure pipe 3 is working properly.

[0034] The flowmeter in the blockage detection fixture is a precision sensor, and foreign matter entering the flowmeter's air inlet can easily damage the flowmeter. However, in some working environments, the air surrounding the negative pressure pipe 3 contains dust. When the blockage detection fixture is detecting blockage in the negative pressure pipe 3, dust can enter the flowmeter's air inlet, causing damage to the flowmeter.

[0035] In order to solve the above technical problem that the flow meter 2 is damaged due to the ingress of dust when detecting the flow of the negative pressure pipe 3, a filtering device 1 is provided in the first embodiment of the present application. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , Figure 1 This is a front view of the filtering device provided in an embodiment of the present application. Figure 2 This is a side view of the filtering device provided in an embodiment of the present application. Figure 3 A top view of the filtering device provided in an embodiment of the present application, Figure 4 for Figure 2 The cross-sectional view at AA in the middle, Figure 5 for Figure 2In the cross-sectional view at BB, the filtering device 1 includes a flow collecting member 11 and a filter member 12. The flow collecting member 11 has an inner cavity and an air outlet 111. The inner cavity and the air outlet are connected. The air outlet 111 is used to connect to the air inlet 21 of the flow meter 2; the filter member 12 is connected to the flow collecting member 11, and the filter member 12 is used to filter the gas entering the inner cavity.

[0036] In the above embodiment, the filter element 12 is arranged on the collecting element 11 to ensure that the gas flowing out from the air outlet 111 is filtered by the filter element 12. Since the air outlet 111 of the collecting element 11 is connected to the air inlet 21 of the flow meter 2, it can be ensured that the gas entering the air inlet 21 of the flow meter 2 is filtered by the filter element 12, thereby reducing the probability of the flow meter 2 being damaged due to dust entering, extending the service life of the flow meter 2, and at the same time, it can also make the flow meter 2 have more operating conditions and better adaptability.

[0037] Specifically, the collecting member 11 includes a shell, which is used to enclose an inner cavity. The air outlet 111 is provided in the shell. The gas filtered by the filter element 12 first enters the inner cavity and then enters the air inlet 21 of the flow meter 2 from the air outlet 111.

[0038] In some embodiments, please refer again to Figure 4 and Figure 5 The current collecting member 11 has multiple air outlets 111, which are connected to the inner cavity. The multiple air outlets 111 are arranged at intervals along the extension direction of the current collecting member 11, and the air inlets 21 of the multiple flow meters 2 correspond to the multiple air outlets 111 one by one.

[0039] It is understood that multiple flow meters 2 may be required during flow measurement on the same negative pressure tube; in other cases, flow measurement on multiple negative pressure tubes may be required, also requiring multiple flow meters 2. The number of flow meters 2 is less than or equal to the number of gas outlets 111. Gas outlets not connected to flow meters 2 are blocked during use to prevent gas from entering the inner cavity and then entering the flow meter 2 without being filtered by the filter element 12, thereby damaging the flow meter 2.

[0040] During actual use, the gas enters the inner cavity after being filtered by the filter element 12, and then enters the flow meter 2 from the inner cavity through multiple air outlets 111. In order to avoid restricting the flow of the flow meter 2, the sum of the flow cross-sectional areas of all the filter elements 12 is greater than or equal to the sum of the flow cross-sectional areas of the air inlet holes 21 of all the flow meters 2, so as to ensure that the flow value of the flow meter 2 during use can reach the upper limit of the designed flow value. In the above embodiment, by providing multiple air outlets 111 on the flow collecting element 11 of the same filter device 1 so that multiple flow meters 2 can be connected to the same filter device 1, the function of filtering the gas entering multiple flow meters 2 is achieved by using only one filter device 1.

[0041] In some embodiments, please refer again to Figures 1 to 5 ,in, Figure 2 This is a side view of the filter device 1 provided in an embodiment of the present application. The collecting part 11 has at least two air inlets 112. The air inlets 112 are respectively provided at both ends of the collecting part 11 in the extension direction. The filter part 12 is provided at the air inlet 112 of the collecting part 11 to filter the gas entering the air inlet 112.

[0042] Furthermore, in some embodiments, the filter element 12 is located on one side of the air inlet 112 and away from the side of the flow collecting member 11; in other embodiments, the filter element is located on one side of the air inlet 112 and in the inner cavity; in other embodiments, the filter element 12 is located inside the air inlet 112.

[0043] In the above embodiment, providing at least two air inlets 112 can achieve a greater air intake volume, thereby preventing the accuracy of the flow meter 2 reading from being affected by insufficient flow at the air inlet 112. In addition, providing two air inlets 112 at both ends of the current collecting member 11 in the extension direction can reduce two hole-making processes when manufacturing the current collecting member 11 using tubular raw materials, thereby reducing the difficulty in manufacturing the current collecting member 11 using tubular raw materials.

[0044] It can be understood that in order to obtain a larger air intake volume, in other embodiments, the filter device 1 has multiple air inlets 112. In addition to the air inlets 112 located at both ends of the extension direction of the collecting member 11, there are also air inlets 112 located between the two ends of the shell and connected to the inner cavity.

[0045] In some embodiments, please refer again to Figure 2 and Figure 6 , Figure 6 for Figure 3 In the detailed view in the middle frame A, the filter device 1 further includes a pressing plate 13 , which is detachably connected to the current collecting member 11 , and the pressing plate 13 presses the filter element 12 onto the current collecting member 11 .

[0046] Furthermore, the connection between the pressing plate 13 and the current collecting member 11 may be a detachable connection such as a flange connection, a clamping connection, a threaded connection, a pin connection, etc., so as to facilitate the assembly and disassembly of the pressing plate 13 .

[0047] After long-term use, the filter element 12 will accumulate dust, and the flow rate of the filter element 12 will decrease, thereby reducing the flow rate of the air outlet 111. When the flow rate of the air outlet 111 is less than the flow rate required by the air inlet 21 of the flow meter 2, the reading of the flow meter 2 cannot correctly reflect the flow rate in the negative pressure pipe, resulting in distortion of the negative pressure pipe detection result. In the above embodiment, a detachable pressing plate 13 is provided to press the filter element 12 onto the flow collecting member 11, thereby achieving the replaceability of the filter element 12, so that when the filter element 12 does not meet the use requirements, a new filter element 12 can be replaced in time, so that the filter device 1 can be restored to the required working state.

[0048] In some embodiments, please refer again to Figure 2 and Figure 6 The filter device 1 includes a connecting structure 113, which is connected to the air inlet of the current collecting member 11. The pressure plate 13 is located on the side of the connecting structure 113 away from the current collecting member 11, and the pressure plate 13 is detachably connected to the connecting structure 113. The filter element 12 is clamped between the pressure plate 13 and the connecting structure 113.

[0049] Specifically, the connecting structure 113 is disposed around the air inlet 112, so that when the pressure plate 13 is connected to the connecting structure 113, the filter element 12 located between the pressure plate 13 and the connecting structure 113 can filter the gas entering the air inlet 112. Furthermore, the pressure plate 13 and the connecting structure 113 are connected via multiple threaded connection pairs to achieve a detachable connection between the pressure plate 13 and the connecting structure 113. Specifically, the pressure plate 13 has a through hole, and the multiple threaded connection pairs are disposed around the through hole. The size of the through hole is greater than or equal to the size of the air inlet 112 to prevent the through hole from restricting the flow rate of the air inlet 112. The gas passes through the filter element 12 through the through hole, is filtered, and then enters the air inlet 112.

[0050] Specifically, in some embodiments, the connection structure 113 is a flange-shaped connection plate or a flange disk.

[0051] Furthermore, in some embodiments, the connecting structure 113 and the current collecting part 11 are an integrated structure; in other embodiments, the connecting structure 113 and the current collecting part 11 are detachably connected, for example, the connecting structure 113 is a threaded flange, the current collecting part 11 has an external thread matching the connecting structure 113, and the connecting structure 113 is threadedly connected to the current collecting part 11.

[0052] In the above embodiment, the pressing plate 13 is detachably connected to the filter device 1 via the connecting structure 113, which facilitates the assembly and disassembly of the pressing plate 13 and the replacement of the filter element 12. In addition, the detachable connection of the pressing plate 13 via the connecting structure 113 also prevents the pressing plate 13 from reducing the flow cross-sectional area of ​​the air inlet 21 when connected to the connecting structure 113, thereby preventing a reduction in the flow rate of the air inlet 21.

[0053] In some embodiments, please refer again to Figure 3 and Figure 5 The filter device 1 further includes a quick-change device 14 , which is connected to the flow collecting member 11 . The quick-change device 14 is disposed at the air outlet 111 , and is used to connect to the flow meter 2 .

[0054] The quick-change device 14 enables rapid assembly and disassembly of the flow meter 2 and the filter device 1. It is understood that the same filter device 1 may be connected to different numbers of flow meters 2 or different types of flow meters 2 under different usage scenarios. The quick-change device 14 enables rapid assembly and disassembly of the flow meters 2 and can also block the air outlets 111 that are not connected to the flow meters 2. When some of the air outlets 111 are not connected to the flow meters 2, unfiltered gas will not enter the inner cavity through the air outlets 111 that are not connected to the flow meters 2.

[0055] Specifically, in some embodiments, the quick-change device 14 is a quick-change connector assembly, which includes a male head and a female head, one of the male head and the female head is arranged at the air outlet 111, and the other of the male head and the female head is arranged at the air inlet 21 of the flow meter 2 to achieve rapid connection and closing of the air inlet 21 and the air outlet 111 of the flow meter 2.

[0056] In some embodiments, see Figure 7 , Figure 7 This is a structural schematic diagram of the flow detection equipment provided in an embodiment of the present application. The filtering device 1 also includes an air pipe 15, one end of the air pipe 15 is connected to the air outlet 111, and the other end of the air pipe 15 is used to connect to the air inlet 21 of the flow meter 2.

[0057] In the above embodiment, by setting the air pipe 15, a flexible connection between the flow meter 2 and the flow collecting part 11 can be achieved, so that when multiple flow meters 2 are connected to the filter device 1, the multiple flow meters 2 can be flexibly arranged with the filter device 1, so that the filter device 1 can be applicable to more working conditions, have more usage scenarios and better adaptability.

[0058] Specifically, in some embodiments, the quick-change device 14 in the above embodiments is located between the air pipe 15 and the air inlet 21 of the flow meter 2; in other embodiments, the quick-change device 14 in the above embodiments is located between the air pipe 15 and the filter device 1; in other embodiments, there is a quick-change device 14 between the air pipe 15 and the filter device 1, and between the air pipe 15 and the flow meter 2.

[0059] In some embodiments, please refer again to Figure 1 、 Figure 3 and Figure 4 The filter device 1 further includes a fixing portion 16 , which is connected to the outer wall of the current collecting member 11 and is used to fix the current collecting member 11 .

[0060] Specifically, the fixing portion 16 may be a flat plate or a bent plate connected to the outer wall of the current collecting member 11 . The fixing portion 16 and the current collecting member 11 may be an integrated structure, or may be connected to the current collecting member 11 by welding or other methods.

[0061] In the above embodiment, the filter device 1 can be fixed by the fixing portion 16, thereby preventing the filter device 1 from pulling on the flow meter 2 and affecting the reading of the flow meter 2. Furthermore, in some embodiments, the filter device 1 includes at least two fixing portions 16 to prevent the filter device 1 from rotating after being fixed; in other embodiments, the fixing portion 16 is provided with a mounting hole, and the fixing portion 16 is provided with at least two mounting holes, and a connection pair is provided in the mounting hole to connect the filter device 1 to a platform or other device to achieve fixation, thereby preventing the filter device 1 from rotating.

[0062] In some embodiments, the filter element 12 is a porous structure.

[0063] In the above embodiment, gas can pass through the pores of the porous structure, while impurities such as dust and flying catkins cannot pass through the pores of the porous structure, thereby achieving gas filtration. Specifically, the filter element 12 can be a filter mesh, particles, sponge or other porous structures.

[0064] Please refer again to Figure 7 Also see Figure 8 and Figure 9 , Figure 8 This is a front view of the flow detection device provided in an embodiment of the present application. Figure 9 This is a side view of a flow detection device provided in an embodiment of the present application. The present application also provides a flow detection device, which also includes the filter device 1, flow meter 2 and support frame 4 in the above embodiment. The filter device 1 is arranged on the support frame 4, and the flow meter 2 is arranged on the support frame 4, and the flow meter 2 has an air inlet 21 and an air outlet. The air inlet 21 is connected to the air outlet 111 of the collecting part 11; the air outlet is used to connect to the measured pipeline. The flow detection device includes the filter device 1 of the present application. It can be understood that the flow detection device can include all the technical features and beneficial effects of the above-mentioned filter device 1, which will not be repeated again.

[0065] The blockage condition of the pipeline under test is determined by reading the flow value displayed by the flow meter 2 in the flow detection device. Specifically, when the flow value displayed by the flow meter 2 is within a preset range, the pipeline under test is determined to be unobstructed; when the flow value displayed by the flow meter 2 is outside the preset range, the pipeline under test is determined to be blocked.

[0066] In some embodiments, the pipeline to be tested is a negative pressure pipeline 3 .

[0067] The flow collecting member 11 is connected to the supporting frame via the fixing portion 16 , the flow meter 2 is connected to the supporting frame, and the air outlet of the flow meter 2 is connected to the negative pressure pipe 3 .

[0068] The above is a detailed introduction to a filtering device 1 and a flow detection device provided in the embodiments of the present application. Specific examples are used in this application to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A filtering device (1), characterized in that: include: A current collecting member (11), the current collecting member (11) comprising an inner cavity and an air outlet (111), the inner cavity and the air outlet (111) being in communication, and the air outlet (111) being used to be in communication with an air inlet (21) of a flow meter (2); A filter element (12), the filter element (12) being connected to the current collecting element (11), and the filter element (12) being used to filter the gas entering the inner cavity.

2. The filtering device (1) according to claim 1, characterized in that The current collecting member (11) has a plurality of air outlets (111), the plurality of air outlets (111) are in communication with the inner cavity, the plurality of air outlets (111) are arranged at intervals along the extension direction of the current collecting member (11), and the air inlet holes (21) of the plurality of flow meters (2) correspond to the plurality of air outlets (111) one by one.

3. The filtering device (1) according to claim 1, characterized in that: The current collecting member (11) has at least two air inlets (112), and the air inlets (112) are respectively arranged at two ends of the current collecting member (11) in the extension direction, and the filter member (12) is arranged at the air inlet (112) of the current collecting member (11) to filter the gas entering the air inlet (112).

4. The filter device (1) according to claim 3, characterized in that The filter device (1) further comprises a pressing plate (13), wherein the pressing plate (13) is detachably connected to the current collecting member (11), and the pressing plate (13) presses the filter member (12) onto the current collecting member (11).

5. The filter device (1) according to claim 4, characterized in that The filter device (1) comprises a connection structure (113), the connection structure (113) is connected to the current collecting member (11), the pressure plate (13) is located on a side of the connection structure (113) away from the current collecting member (11), and the pressure plate is detachably connected to the connection structure (113), and the filter element (12) is sandwiched between the pressure plate (13) and the connection structure (113).

6. The filtering device (1) according to claim 1, characterized in that The filtering device (1) further comprises a quick-change device (14), the quick-change device (14) being connected to the flow collecting member (11), the quick-change device (14) being arranged at the air outlet (111), and the quick-change device (14) being used to connect to a flow meter (2).

7. The filter device (1) according to claim 1, characterized in that The filtering device (1) further comprises an air pipe (15), one end of the air pipe (15) being connected to the air outlet (111), and the other end of the air pipe (15) being used to be connected to the air inlet (21) of the flow meter (2).

8. The filter device (1) according to claim 1, characterized in that The filter device (1) further comprises a fixing portion (16), wherein the fixing portion (16) is connected to the outer wall of the current collecting member (11), and the fixing portion (16) is used to fix the current collecting member (11).

9. The filter device (1) according to claim 1, characterized in that: The filter element (12) is filled in the inner cavity of the current collecting element (11), and the filter element (12) is a porous structure.

10. A flow detection device, characterized in that: include: The filtering device (1) according to any one of claims 1 to 9; A supporting frame (4), wherein the filtering device (1) is arranged on the supporting frame (4); A flow meter (2), the flow meter (2) being arranged on the support frame (4), the flow meter (2) having an air inlet (21) and an air outlet, the air inlet (21) being connected to the air outlet (111) of the current collecting member (11); the air outlet being used to connect to the measured pipeline.

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