Atmospheric environment monitoring dust particle grading collection device

Abstract

The utility model relates to the technical field of environment monitoring, and discloses an atmospheric environment monitoring dust particle grading collecting device which comprises a collecting tank, a catching assembly arranged above the collecting tank, a dust particle grading collecting assembly arranged above the catching assembly and a dust particle grading collecting assembly arranged below the collecting tank, the collecting tank is internally provided with a filtering assembly, the capturing assembly comprises a reducing pipe fixedly communicated with the top end of the collecting tank, the top end of the reducing pipe is fixedly communicated with a capturing cylinder, and one end of the capturing cylinder is fixedly communicated with a plurality of uniformly distributed capturing pipes; the effect of improving the collection efficiency is achieved, the electric telescopic rod drives the piston plate to slide along the inner circumferential wall of the collection tank, negative pressure is generated in the collection tank, air is sucked in, and then air samples at multiple heights are conveniently captured in single collection through the arrangement of a plurality of equidifferently increased capture pipes, so that the collection efficiency is improved. The problem that the air sample collecting efficiency of the device is difficult to effectively improve is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental monitoring, and specifically relates to an atmospheric environmental monitoring dust particle classification collection device. Background Technique

[0002] The atmospheric environmental monitoring dust particle classification collection device is an important environmental monitoring equipment. By sampling, classifying and analyzing the particulate matter in the air, it provides relevant data such as the types of atmospheric pollutants, mass concentration and particle size distribution, providing a scientific basis for air pollution control and environmental protection. The core component of the dust particle classification collection device is the particle collector, which uses filter membranes or filter papers of different materials and different pore sizes to simultaneously classify and collect particulate matter of two particle size levels, PM10 and PM2.5.

[0003] After retrieval, the Chinese patent with the publication number CN220339791U discloses an atmospheric environmental monitoring dust particle classification collection device, including a sampling cylinder, and a sampling head is installed at the top of the sampling cylinder. It further includes: a disassembly and assembly component arranged on the sampling cylinder for disassembling, assembling and taking the dust particles after classification filtration; a diversion component located above the disassembly and assembly component and arranged in the sampling cylinder for drying the moisture in the collected dust particles.

[0004] Through the disassembly and assembly component arranged on the sampling cylinder, the disassembly and assembly component can be quickly disassembled and removed from the sampling cylinder during use, saving the trouble of manual removal of the housing, making the operation more convenient and fast. And during the collection process, pre-drying operation is carried out on the moisture in the inhaled air to remove the moisture, avoiding the dust particles from sticking to the filter membrane, improving the accuracy of the collection and measurement results of the device, reducing the occurrence of device failure phenomena, and effectively saving the maintenance cost.

[0005] However, the device still has the following problems. The device extracts the external air sample through the mutual cooperation between the air pump and the suction pipe, and then through the mutual cooperation between the annular pipe and the jet head, makes the air sample spray onto the filter membrane. In the actual use process, during a single collection process, the device can only extract the air sample at a single height through a single suction pipe. In order to improve the accuracy of the monitoring results, it is necessary to collect the air samples at different heights multiple times, and it is difficult to effectively improve the efficiency of the device in collecting air samples. Content of the Utility Model

[0006] (1) Technical Problem to be Solved

[0007] Aiming at the deficiencies of the prior art, the utility model provides an atmospheric environmental monitoring dust particle classification collection device, which solves the problem that it is difficult to effectively improve the efficiency of the device in collecting air samples.

[0008] (2) Technical Solution

[0009] To achieve the above object, the present utility model provides the following technical solutions: An atmospheric environment monitoring dust particle classification collection device, including a collection tank, the bottom end of the collection tank is fixedly connected with a fixed frame, the bottom end of the fixed frame is fixedly connected with a fixed plate, and further includes a capture component arranged above the collection tank, and a filtering component is arranged inside the collection tank;

[0010] The capture component includes a reducing pipe fixedly communicated with the top end of the collection tank, the top end of the reducing pipe is fixedly communicated with a capture cylinder, one end of the capture cylinder is fixedly communicated with a plurality of uniformly distributed capture pipes, and the lengths of adjacent capture pipes increase arithmetically. The top end of each capture pipe is fixedly communicated with a capture head, and a filter screen is installed at one end of each capture head. One side of the top of the fixed plate is fixedly connected with an electric telescopic rod, and the outer peripheral wall of the extending end of the electric telescopic rod is slidably connected with the bottom end of the collection tank. A piston plate is slidably connected to the inner peripheral wall of the collection tank, and the bottom end of the piston plate is fixedly connected with the extending end of the electric telescopic rod. A plurality of air vents are opened at the bottom of the collection tank near the electric telescopic rod.

[0011] Preferably, the electric telescopic rod is coaxially arranged with the collection tank, and the inner diameter of the top end of the reducing pipe is larger than the inner diameter of its bottom end.

[0012] Preferably, the inner peripheral walls of a pair of air vents are both slidably connected with guide rods, and the top ends of the guide rods are both fixedly connected with the bottom end of the piston plate.

[0013] Preferably, the filtering component includes a pair of card slots opened in the upper part of the collection tank, and a filter insertion plate is inserted into the inner wall of each card slot. A handle is fixedly connected to one side of the outer wall of each filter insertion plate.

[0014] Preferably, a sealing strip adapted to the inner peripheral wall of the collection tank is fixedly connected to the edge of each filter insertion plate. A first filter membrane is installed at one end of the filter insertion plate close to the top end of the collection tank, and a second filter membrane is installed at one end of the other filter insertion plate.

[0015] (III) Beneficial effects

[0016] 1. For this atmospheric environment monitoring dust particle classification collection device, by driving the piston plate to slide along the inner peripheral wall of the collection tank through the electric telescopic rod, negative pressure is generated inside the collection tank to suck in air. Then, through the setting of a plurality of capture pipes with arithmetically increasing lengths, it is convenient to capture air samples at multiple heights in a single collection, effectively improving the collection efficiency of the device.

[0017] 2. This atmospheric environment monitoring dust particle classification collection device is simple to operate and ingeniously designed. Then, through the mutual cooperation between the card slots and the sealing strips, a pair of filter insertion plates are inserted into the upper part of the collection tank, which is convenient for improving the convenience of taking and placing the filter insertion plates. Description of the drawings

[0018] Figure 1 It is a schematic three - dimensional structure diagram of the first perspective of the present utility model;

[0019] Figure 2 It is a schematic three - dimensional structure diagram of the second perspective of the present utility model;

[0020] Figure 3 It is a schematic three - dimensional structure diagram of a semi - section of some components of the present utility model;

[0021] Figure 4 is Figure 3 an enlarged schematic diagram of part A in

[0022] In the figure: 1, collection tank; 2, fixing frame; 3, fixing plate; 4, electric telescopic rod; 5, reducer pipe; 6, capture cylinder; 7, capture pipe; 8, capture head; 9, filter screen; 10, piston plate; 11, card slot; 12, filter insertion plate; 13, handle; 14, sealing strip; 15, filter membrane 1; 16, filter membrane 2; 17, air vent; 18, guide rod. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment: As Figure 1 shown, an atmospheric environment monitoring dust particle classification collection device includes a collection tank 1. The collection tank 1 is made of aluminum alloy material to enhance the overall structural strength of the device. The bottom end of the collection tank 1 is fixedly connected to a fixing frame 2 by welding, and the bottom end of the fixing frame 2 is fixedly connected to a fixing plate 3 by welding. Through the mutual cooperation between the fixing frame 2 and the fixing plate 3, the stability of the device is enhanced. It also includes a capture assembly arranged above the collection tank 1, and a filtering assembly is arranged inside the collection tank 1.

[0025] As Figures 2 - 4As shown, in a certain embodiment, in order to improve the collection efficiency of the device, the capture component includes a reducer 5 fixedly connected to the top of the collection tank 1, and the top inner diameter of the reducer 5 is larger than the bottom inner diameter. The setting of the reducer 5 can improve the circulation rate of the air sample. The top of the reducer 5 is fixedly connected to a capture tube 6, and one end of the capture tube 6 is fixedly connected to a plurality of evenly distributed capture tubes 7, and the lengths of adjacent capture tubes 7 increase arbitrarily. Through the mutual cooperation between the plurality of arbitrarily increasing capture tubes 7, it is convenient to capture air samples at multiple heights in a single collection, which effectively improves the collection efficiency of the device. The top of each capture tube 7 is fixedly connected to a capture head 8, wherein the capture head 8 serves to expand the inner diameter of the capture end to facilitate the entry of the air sample into the capture tube 7. One end of each capture head 8 is installed with a filter screen 9, which is used for capturing The catching head 8 and the filter screen 9 cooperate with each other to filter particles with a diameter greater than 10 μm. An electric telescopic rod 4 is fixedly connected to one side of the top of the fixed plate 3, and the outer peripheral wall of the extended end of the electric telescopic rod 4 is slidably connected to the bottom end of the collection tank 1. The inner peripheral wall of the collection tank 1 is slidably connected to a piston plate 10, and the bottom end of the piston plate 10 is fixedly connected to the extended end of the electric telescopic rod 4, wherein the electric telescopic rod 4 plays a role in driving the piston plate 10 to move. A plurality of air holes 17 are provided at the bottom of the collection tank 1 near the electric telescopic rod 4. The electric telescopic rod 4 is coaxially arranged with the collection tank 1, and the inner peripheral walls of a pair of air holes 17 are slidably connected to guide rods 18, and the top ends of the guide rods 18 are fixedly connected to the bottom end of the piston plate 10. The setting of the guide rods 18 improves the stability of the movement of the piston plate 10 driven by the electric telescopic rod 4.

[0026] like Figure 2 and Figure 3 As shown, in a certain embodiment, in order to improve the convenience of using the device, the filter assembly includes a pair of card slots 11 opened on the upper part of the collection tank 1, and the inner wall of each of the card slots 11 is plugged with a filter plug 12. Through the setting of the card slots 11, the convenience of taking and placing the filter plug 12 is improved, and a handle 13 is fixedly connected to one side of the outer wall of each of the filter plugs 12, wherein the handle 13 serves to facilitate the disassembly and assembly of the filter plug 12, and a sealing strip 14 adapted to the inner circumferential wall of the collection tank 1 is fixedly connected to the edge of each of the filter plugs 12, wherein the sealing strip 14 serves to seal and avoid air leakage during the collection process, wherein one end of the filter plug 12 close to the top of the collection tank 1 is installed with a filter membrane 15, wherein the filter membrane 15 serves to filter particles with a diameter greater than 2.5 μm, and one end of the other filter plug 12 is installed with a filter membrane 2 16, wherein the filter membrane 2 16 serves to filter particles with a diameter less than or equal to 2.5 μm.

[0027] Working principle: When in use, first correctly install the first filter membrane 15 and the second filter membrane 16 at one end of a pair of filter inserts 12 respectively. Then, through the mutual cooperation between the card slot 11 and the sealing strip 14, a pair of filter inserts 12 are inserted into the upper part of the collection tank 1. Then start the electric telescopic rod 4, and drive the piston plate 10 to slide along the inner peripheral wall of the collection tank 1 through the electric telescopic rod 4, so that a negative pressure is generated inside the collection tank 1 to suck in air. Then, through the setting of a number of capture tubes 7 with an arithmetic progression increase, it is convenient to capture air samples at multiple heights in a single collection, effectively improving the collection efficiency of the device. Then, through the mutual cooperation between the capture tube 7, the capture head 8 and the filter net 9, particulate matter with a diameter greater than 10 μm is filtered, so that the filtered air sample moves into the capture cylinder 6. Then, through the setting of the reducing pipe 5, the flow rate of the air sample is increased, which is convenient to improve the subsequent filtration rate of the air sample. Then, the first filter membrane 15 filters particulate matter with a diameter greater than 2.5 μm, and then the second filter membrane 16 filters particulate matter with a diameter less than or equal to 2.5 μm, and the hierarchical collection of the air sample can be completed.

[0028] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "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 or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An atmospheric environment monitoring dust particle classification collection device, comprising a collection tank (1), the bottom end of the collection tank (1) is fixedly connected with a fixing frame (2), and the bottom end of the fixing frame (2) is fixedly connected with a fixing plate (3), characterized in that: It further includes a capturing component disposed above the collection tank (1), and a filtering component is arranged inside the collection tank (1); The capturing component includes a reducing pipe (5) fixedly communicated with the top end of the collection tank (1), a capturing cylinder (6) is fixedly communicated with the top end of the reducing pipe (5), a plurality of uniformly distributed capturing pipes (7) are fixedly communicated with one end of the capturing cylinder (6), and the lengths of adjacent capturing pipes (7) increase in an arithmetic progression. A capturing head (8) is fixedly communicated with the top end of each capturing pipe (7), a filter screen (9) is installed at one end of each capturing head (8), a side of the top of the fixing plate (3) is fixedly connected with an electric telescopic rod (4), and the outer peripheral wall of the extending end of the electric telescopic rod (4) is slidably connected with the bottom end of the collection tank (1). A piston plate (10) is slidably connected with the inner peripheral wall of the collection tank (1), and the bottom end of the piston plate (10) is fixedly connected with the extending end of the electric telescopic rod (4). A plurality of air holes (17) are formed in the bottom of the collection tank (1) near the electric telescopic rod (4).

2. The atmospheric environment monitoring dust particle classification collection device according to claim 1, characterized in that: The electric telescopic rod (4) is coaxially arranged with the collection tank (1), and the inner diameter of the top end of the reducing pipe (5) is larger than that of its bottom end.

3. The atmospheric environment monitoring dust particle classification collection device according to claim 1, characterized in that: The inner peripheral walls of a pair of the air holes (17) are both slidably connected with guide rods (18), and the top ends of the guide rods (18) are both fixedly connected with the bottom end of the piston plate (10).

4. The atmospheric environment monitoring dust particle classification collection device according to claim 1, characterized in that: The filtering component includes a pair of clamping grooves (11) formed in the upper part of the collection tank (1), a filtering plug board (12) is inserted into the inner wall of each clamping groove (11), and a handle (13) is fixedly connected to one side of the outer wall of each filtering plug board (12).

5. An atmospheric environment monitoring dust particle classification collection device according to claim 4, characterized in that: A sealing strip (14) adapted to the inner peripheral wall of the collection tank (1) is fixedly connected to the edge of each filtering plug board (12). A first filter membrane (15) is installed at one end of the filtering plug board (12) close to the top end of the collection tank (1), and a second filter membrane (16) is installed at one end of the other filtering plug board (12).

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