Particulate matter filter membrane weighing device

Abstract

The utility model relates to the technical field of particulate matter filter membrane weighing, and discloses a particulate matter filter membrane weighing device which comprises a flow sampler body, the top of the flow sampler body is communicated with an equipment box, the top of the equipment box is in threaded connection with a detachable collecting opening, the top of the detachable collecting opening is movably plugged with a first piston, and the top of the first piston is movably plugged with a second piston. By adopting the structural design of the filter membrane placing frame, the particulate matter filter membrane can be kept in a stable placing state before and after weighing, so that the accuracy of weighing data is improved. Through cooperation of a detachable collecting opening, a T-shaped block and a second piston, the filter membrane placing frame is reliably fixed in the equipment box, and the weighing result is prevented from being influenced by external vibration or airflow interference. In addition, the servo motor drives the threaded rod to be linked with the connecting plate, so that the filter membrane placing frame can stably move to the position of the weighing sensor, automatic measurement of the weight of the particulate matters is realized, manual operation errors are reduced, and the measurement precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to particulate matter filter membrane weighing technical field, concretely is a kind of particulate matter filter membrane weighing device. BACKGROUND

[0002] Particulate matter filter membrane is a kind of filter medium for collecting and analyzing particulate matter in air, usually made of glass fiber, polytetrafluoroethylene (PTFE), quartz fiber or other high-efficiency filter material. It is widely used in environmental monitoring, industrial emission detection and laboratory analysis, for assessing air pollution level, particulate matter concentration and component analysis, in the whole analysis process, the weighing of particulate matter filter membrane can be carried out sampling data analysis.

[0003] Traditional particulate matter weighing method usually adopts independent filter membrane weighing method, i.e. weighing filter membrane before and after sampling respectively, calculating the weight of particulate matter by the mass difference of two measurements, which is easily affected by external environmental factors (such as air flow, humidity change) in the operation process, resulting in measurement error. In addition, filter membrane may be contaminated or damaged after sampling, affecting the accuracy of weighing. Therefore, it is urgent to design a particulate matter filter membrane weighing device which can reduce external interference, improve weighing precision and simplify operation process.

[0004] Therefore, it is necessary to design a particulate matter filter membrane weighing device to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a particulate matter filter membrane weighing device to solve the technical problems proposed in the above background.

[0006] To achieve the above object, the utility model provides following technical scheme: a granule filter membrane weighing device, the top of flow sampler body is connected with equipment box, and the top of equipment box is detachably connected with the collecting port, the top of detachable collecting port is equipped with first piston, one side of equipment box is equipped with opening, one side of opening is equipped with second piston, and the inside of equipment box is equipped with filter membrane placing frame, both sides of filter membrane placing frame are equipped with the opening of intercommunication, the top of two openings is equipped with threaded connector, and the bottom of two threaded connectors is rotatably connected with pressing plate, the lower side of one side opening of filter membrane placing frame is equipped with groove, the bottom of groove is slidably inserted with the plug -in column, and the top of plug -in column is fixedly connected with connecting plate, one side of connecting plate is fixedly connected with threaded connecting plate, one side of equipment box is fixedly connected with servo motor, and the output shaft of servo motor is fixedly connected with threaded rod, and one end of threaded rod is inserted in the inside of threaded connecting plate, the top of equipment box is slidably inserted with T -shaped block, and the top of T -shaped block is fixedly connected with four first springs that are symmetrically, and the bottom of T -shaped block is equipped with square opening, and the top of square opening is equipped with slot, and the top of slot is fixedly connected with two second springs that are symmetrically, and the bottom of two second springs is fixedly connected with one sliding block, and the sliding block is slidably arranged in the inside of square opening, and the bottom of equipment box is provided with weighing sensor connecting plate.

[0007] Preferably, the second piston and the bottom of the T-shaped block are fixedly connected with limit blocks on the outer surfaces of one side of the filter membrane placing frame, and the bottoms of the two limit blocks respectively match the bottoms of the two sides of the filter membrane placing frame.

[0008] Preferably, the two sides of the filter membrane placing frame respectively match one side of the second piston and the bottom of the T-shaped block, and the T-shaped block is located on one side of the detachable collecting port.

[0009] Preferably, the two sides of the filter membrane placing frame respectively match the two sides of the inner cavity of the equipment box, the two ends of the threaded connecting plate respectively match the two sides of the inner cavity of the equipment box, and the two sides of the T-shaped block match the two sides of the inner cavity of the equipment box.

[0010] Preferably, the length of the weighing sensor connecting plate is greater than the length of the filter membrane placing frame, the threaded rod is located on one side of the two threaded connectors, and the inside of the equipment box is fixedly connected with a positioning plate.

[0011] Preferably, the top of the T-shaped block and the top of the equipment box are both provided with threaded holes, and the T-shaped block is screw-connected to the top of the equipment box through bolts.

[0012] Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

[0013] The utility model discloses a filter membrane placing frame's structure design makes particulate matter filter membrane can keep stable placement state before and after weighing to improve the accuracy of weighing data. The cooperation of detachable collecting port, T-shaped block and second piston makes filter membrane placing frame get reliable fixing inside equipment box, avoids weighing result from outside vibration or airflow interference influence. In addition, servo motor drive screw rod and connecting plate linkage make filter membrane placing frame can move stably to weighing sensor position, realize the automatic measurement of particulate matter weight, reduce artificial operation error, improve measurement accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structural schematic diagram of the utility model;

[0015] Figure 2 It is the equipment box structure exploded view of the utility model;

[0016] Figure 3 It is the filter membrane placing frame structure exploded view of the utility model;

[0017] Figure 4 It is the T-shaped block structure exploded view of the utility model;

[0018] In the drawing: 1, flow sampler body;2, equipment box;3, T-shaped block;4, first spring;5, detachable collecting port;6, first piston;7, second piston;8, servo motor;9, screw rod;10, threaded plate;11, filter membrane placing frame;12, limit block;13, weighing sensor connecting plate;14, positioning plate;15, threaded connector;16, connecting plate;17, plug-in column;18, pressing plate;19, second spring;21, sliding block. DETAILED DESCRIPTION

[0019] The technical scheme in the utility model embodiment will be described clearly and completely in conjunction with the accompanying drawings in the utility model embodiment.

[0020] Obviously, in the following description, a lot of specific details are set forth in order to give a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from the description, therefore, the utility model is not limited to the specific embodiments disclosed in the following description.

[0021] Please refer to Figures 1-4The utility model provides a kind of particulate filter membrane weighing device, including flow sampler body 1, the top of flow sampler body 1 is connected with equipment box 2, and the top of equipment box 2 is detachably connected with collectable mouth 5, the top movable plug of detachable collectable mouth 5 is equipped with first piston 6, one side of equipment box 2 is equipped with opening, one side plug of opening is equipped with second piston 7, and the inside movable clamping of equipment box 2 is equipped with filter membrane placing frame 11, and the both sides of filter membrane placing frame 11 are all equipped with the opening of intercommunication, and the top of two openings is all equipped with threaded connector 15, and the bottom of two threaded connectors 15 is all rotatably connected with pressing plate 18, and the recess is equipped below the opening of one side of filter membrane placing frame 11, the bottom of recess is slidably inserted with inserting post 17, and the top of inserting post 17 is fixedly connected with connecting plate 16, the one side of connecting plate 16 is fixedly connected with threaded connecting plate 10, and the one side of equipment box 2 is fixedly connected with servo motor 8, and the output shaft of servo motor 8 is fixedly connected with threaded rod 9, and one end of threaded rod 9 is threadedly inserted in the inside of threaded connecting plate 10, and the top of equipment box 2 is slidably inserted with T-shaped block 3, and the top end bottom of T-shaped block 3 is fixedly connected with four first springs 4 that are two two symmetries, and the bottom end of T-shaped block 3 is equipped with square opening, and the top of square opening is equipped with slot, and the top of slot is fixedly connected with two second springs 19 that are symmetrical, and the bottom end of two second springs 19 is commonly fixedly connected with one sliding block 21, the sliding block 21 is slidably arranged in the inside of square opening, the bottom of equipment box 2 is equipped with weighing sensor connecting plate 13, by filter membrane placing frame 11 in the outside of equipment box 2, the particulate filter membrane is rotated using two threaded connectors 15, the particulate filter membrane is assembled with filter membrane placing frame 11, and the overall weight of filter membrane placing frame 11 is weighed in advance, then, filter membrane placing frame 11 is placed in the inside of equipment box 2, and second piston 7 is plugged in the one side of equipment box 2, then, T-shaped block 3 is pressed to the inside of equipment box 2, and T-shaped block 3 is threadedly connected with equipment box 2, so that filter membrane placing frame 11 is clamped stably using T-shaped block 3 and second piston 7, and when T-shaped block 3 is lowered, elastically arranged sliding block 21 is attached to connecting plate 16 and elastically shrinks after, ensure the sealing property of filter membrane placing frame 11 on the one side of T-shaped block 3, then, detachable collectable mouth 5 is connected on the top of equipment box 2, so that flow sampler body 1 is opened and works normally, at this time, filter membrane will absorb particulate matter, when particulate matter collection is completed, first piston 6 can be plugged on detachable collectable mouth 5, and T-shaped block 3 is threadedly inserted, T-shaped block 3 is popped out, so that the opening of servo motor 8 is used, threaded connecting plate 10 is threadedly rotated using threaded rod 9, filter membrane placing frame 11 and filter membrane are pulled to the top of weighing sensor connecting plate 13 using connecting plate 16 and inserting post 17, and the overall weight of filter membrane and filter membrane placing frame 11 is weighed using weighing sensor connecting plate 13, so that the weight of particulate matter in filter membrane can be obtained using two numerical values,Thus, the required value is calculated, and during the weighing process, the influence of external conditions on the accuracy of the data during secondary weighing is avoided.

[0022] In order to facilitate the positioning and fixing of the filter membrane placing frame 11, the bottom end of the second piston 7 and the T-shaped block 3 is fixedly connected with a limiting block 12 on the outer surface of one side of the filter membrane placing frame 11, and the bottom of the two limiting blocks 12 is respectively matched with the bottom of the two sides of the filter membrane placing frame 11.

[0023] In order to facilitate the stable placement of the filter membrane placing frame 11 inside the equipment box 2, the two sides of the filter membrane placing frame 11 are respectively matched with one side of the bottom end of the second piston 7 and the T-shaped block 3, and the T-shaped block 3 is located on one side of the detachable collecting port 5.

[0024] In order to facilitate the sliding of the filter membrane placing frame 11 inside the equipment box 2, the two sides of the filter membrane placing frame 11 are respectively matched with the two sides of the inner cavity of the equipment box 2, and the two ends of the threaded connecting plate 10 are respectively matched with the two sides of the inner cavity of the equipment box 2, and the two sides of the T-shaped block 3 are matched with the two sides of the inner cavity of the equipment box 2.

[0025] Further, in order to facilitate the secondary weighing of the filter membrane weight when the filter membrane placing frame 11 moves, and to limit the moving position of the filter membrane placing frame 11, the length of the weighing sensor connecting plate 13 is greater than the length of the filter membrane placing frame 11, and the threaded rod 9 is located on one side of the two threaded connecting heads 15, and the inside of the equipment box 2 is fixedly connected with a positioning plate 14.

[0026] Further, in order to facilitate the fixing of the position of the T-shaped block 3, the T-shaped block 3 and the top of the equipment box 2 are both provided with threaded holes, and the T-shaped block 3 is connected to the top of the equipment box 2 through bolts.

[0027] The preferred embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.

[0028] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present application will not further describe various possible combination manners.

[0029] In addition, various different embodiments of the present application can also be combined in any manner, as long as they do not deviate from the technical concept of the present application, and they should also be considered as disclosed content of the present application.

Claims

1. A particulate filter weighing device comprising a flow sampler body (1), characterized in that: The top of the flow sampler body (1) is communicated with a device box (2), and the top of the device box (2) is threadedly connected with a detachable collecting port (5), the top of the detachable collecting port (5) is provided with a first piston (6), one side of the device box (2) is provided with an opening, one side of the opening is provided with a second piston (7), and the inside of the device box (2) is movably clamped with a filter membrane placing frame (11), both sides of the filter membrane placing frame (11) are provided with openings in communication, the top of the two openings are threadedly connected with threaded connectors (15), the bottom of the two threaded connectors (15) are rotatably connected with pressing plates (18), and a groove is formed below the opening on one side of the filter membrane placing frame (11), the bottom of the groove is slidably connected with a plug-in column (17), the top of the plug-in column (17) is fixedly connected with a connecting plate (16), one side of the connecting plate (16) is fixedly connected with a threaded connecting plate (10), one side of the device box (2) is fixedly connected with a servo motor (8), the output shaft of the servo motor (8) is fixedly connected with a threaded rod (9), one end of the threaded rod (9) is threadedly connected in the threaded connecting plate (10), the top of the device box (2) is slidably connected with a T-shaped block (3), the top of the T-shaped block (3) is fixedly connected with four first springs (4) symmetrically, the bottom of the T-shaped block (3) is provided with a square opening, the top of the square opening is provided with a slot, the top of the slot is fixedly connected with two second springs (19) symmetrically, the bottom of the two second springs (19) is fixedly connected with a sliding block (21) together, and the sliding block (21) is slidably arranged in the square opening, and the bottom of the device box (2) is provided with a weighing sensor connecting plate (13).

2. The particulate filter weighing device of claim 1, wherein: The bottom of the second piston (7) and the T-shaped block (3) is fixedly connected with a limiting block (12) on the outer surface of one side of the filter membrane placing frame (11), and the bottom of the two limiting blocks (12) is respectively matched with the bottom of the two sides of the filter membrane placing frame (11).

3. The particulate filter weighing apparatus of claim 1, wherein: The two sides of the filter membrane placing frame (11) are respectively matched with the bottom of the second piston (7) and the T-shaped block (3), and the T-shaped block (3) is located on one side of the detachable collecting port (5).

4. The particulate filter weighing apparatus of claim 1, wherein: The two sides of the filter membrane placing frame (11) are respectively matched with the two sides of the inner cavity of the device box (2), and the two ends of the threaded connecting plate (10) are respectively matched with the two sides of the inner cavity of the device box (2), and the two sides of the T-shaped block (3) are matched with the two sides of the inner cavity of the device box (2).

5. The particulate filter weighing apparatus of claim 1, wherein: The length of the weighing sensor connecting plate (13) is greater than the length of the filter membrane placing frame (11), and the threaded rod (9) is located on one side of the two threaded connectors (15), and the inside of the device box (2) is fixedly connected with a positioning plate (14).

6. The particulate filter weighing apparatus of claim 1, wherein: The top of the T-shaped block (3) and the device box (2) is provided with a threaded hole, and the T-shaped block (3) is threadedly connected to the top of the device box (2) by bolts.

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