Multi-channel dust nozzles with automatic cleaning and particle resuspension device

Abstract

The present invention proposes a multi-channel dust-generating nozzle capable of automatic cleaning and a particle resuspension device. The multi-channel dust-generating nozzle capable of automatic cleaning comprises a body having a receiving chamber, a first connection port provided at one end of the body, a cleaning member provided in the receiving chamber away from the first connection port, a driving member connected to the cleaning member to drive the cleaning member to move toward the first connection port, a second connection port of an external pipe connected to the receiving chamber, and the second connection port provided between the cleaning member and the first connection port. The particle resuspension device and the multi-channel dust-generating nozzle capable of automatic cleaning. The multi-channel dust-generating nozzle capable of automatic cleaning and the particle resuspension device, the driving member and the cleaning member can effectively clean the inner wall of the receiving chamber after use, and the second connection port is provided between the first connection port and the cleaning member to prevent the cleaning member from affecting the particles during operation of the device and to prevent the particles from impacting the cleaning member.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental monitoring equipment, and in particular to a multi-channel dust-generating nozzle capable of automatic cleaning and a particle resuspension device. Background Art

[0002] Since 2000, my country's air pollution control efforts have shifted from SO2, NOx, and TSP to PM10, and will gradually shift to PM2.5. At the same time, the State Environmental Protection Administration (SEPA) has expanded the number of cities meeting ambient particulate matter standards from 45 key environmental protection cities, including municipalities, provincial capitals, and independent cities, to 300. In 2014, the State Environmental Protection Administration (SEPA) issued the "Notice on the First Phase of Atmospheric Particulate Matter Source Appraisal Research," aiming to fully initiate research on the source apportionment of atmospheric particulate matter and make it a routine practice for environmental monitoring stations nationwide. Regular analysis of atmospheric particulate matter source apportionment is particularly important for cities and regions exceeding standards. Resuspension samplers can stably generate and sample polydisperse dust particles within a range of mass concentrations and size distributions in the laboratory. Therefore, they play a significant role in atmospheric particulate matter source apportionment. The resuspension sampler is generally composed of a particle resuspension system and a particle detection system, wherein the particle resuspension system includes an air source part, a particle generating part and a resuspension part. The sample is launched by high-pressure gas in the particle generating part and then transferred to the resuspension part through the pipeline and nozzle. After the sample is launched, a part of it is often electrostatically adsorbed on the pipe wall or remains in the pipe between the particle generating part and the resuspension part due to pipe bending. A lot of sample is often adsorbed at the nozzle. Therefore, the current resuspension sampler can only collect one sample at a time for testing. If continuous testing is performed, the sample of the last test will interfere with the test result. During this period, the pipeline and nozzle must be manually cleaned before the next sample can be tested, which is time-consuming and labor-intensive. Summary of the Invention

[0003] The present invention addresses the problems existing in the prior art and proposes a multi-channel dust generating nozzle and a particle resuspension device capable of automatic cleaning.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A multi-channel dust-generating nozzle that can automatically clean includes a main body with a accommodating cavity, a first connecting port arranged at one end of the main body, a cleaning member arranged in the accommodating cavity away from the first connecting port, a driving member connected to the cleaning member to drive the cleaning member to move toward the first connecting port, and a second connecting port of an external pipe connected to the accommodating cavity, wherein the second connecting port is arranged between the cleaning member and the first connecting port.

[0006] As a further optimization of the present invention, the main body is further provided with an air inlet communicated with the accommodating cavity, and the air inlet is connected to an air source.

[0007] As a further optimization of the present invention, the main body includes an upper body and a lower body, and a pressure plate provided at one end of the upper body away from the lower body, and the first connection port is provided on the lower body.

[0008] As a further optimization of the present invention, the driving member is arranged on the pressure plate.

[0009] As a further optimization of the present invention, the driving member is a micro cylinder.

[0010] As a further optimization of the present invention, the cleaning member is a brush arranged corresponding to the inner wall of the accommodating cavity.

[0011] As a further optimization of the present invention, there are multiple second connection ports, and the second connection ports extend from a direction close to the axis of the body to a direction close to the first connection port.

[0012] As a further optimization of the present invention, the first connecting port is a tapered channel.

[0013] A particle resuspension device comprises the multi-channel dust generating nozzle capable of automatic cleaning as described in any one of the above items.

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

[0015] The multi-channel dust-generating nozzle capable of automatic cleaning described in the present invention can effectively clean the inner wall of the accommodating chamber after use through the arrangement of a driving part and a cleaning part. At the same time, the second connecting port is arranged between the first connecting port and the cleaning part, which can prevent the cleaning part from affecting the particles when the device is running and prevent the particles from impacting the cleaning part, thereby realizing the normal operation of the device and automatically cleaning.

[0016] The particle resuspension device described in the present invention includes the above-mentioned multi-channel dust-generating nozzle that can be automatically cleaned. Through the arrangement of the driving part and the cleaning part, the inner wall of the accommodating chamber can be effectively cleaned after use. At the same time, the second connecting port is arranged between the first connecting port and the cleaning part, which can prevent the cleaning part from affecting the particles when the device is running and prevent the particles from impacting the cleaning part, thereby realizing the normal operation of the device and automatically cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A three-dimensional diagram of the multi-channel dust-generating nozzle capable of automatic cleaning according to the present invention;

[0019] Figure 2 The figure is a cross-sectional view of the multi-channel dust-generating nozzle capable of automatic cleaning according to the present invention.

[0020] In the above figures, 1. main body; 11. upper body; 111. air inlet; 12. lower body; 121. first connection port; 122. second connection port; 13. pressure plate; 14. accommodating chamber; 2. cleaning part; 3. driving part; 4. pipeline. DETAILED DESCRIPTION

[0021] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that without further description, elements, structures, and features in one embodiment may also be beneficially combined in other embodiments.

[0022] In the description of the present invention, it should be noted that the terms "inner," "outer," "upper," "lower," "front," and "rear" and the like, indicating orientations or positional relationships, are based on the positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or units referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] refer to Figure 1-2 The present invention proposes a multi-channel dust-generating nozzle that can automatically clean, including a main body 1 with a accommodating chamber 14, a first connecting port 121 provided at one end of the main body 1, a cleaning member 2 provided in the accommodating chamber 14 away from the first connecting port, a driving member 3 connected to the cleaning member 2 to drive the cleaning member 2 to move toward the first connecting port 121, a second connecting port 122 of an external pipe connected to the accommodating chamber 14, and the second connecting port 122 is provided between the cleaning member 2 and the first connecting port 121.

[0024] The multi-channel dust-generating nozzle capable of automatic cleaning described in the present invention can effectively clean the inner wall of the accommodating chamber 14 after use through the arrangement of the driving part 3 and the cleaning part 2. At the same time, the second connecting port 122 is arranged between the first connecting port 121 and the cleaning part 2, which can prevent the cleaning part 2 from affecting the particles when the device is running and prevent the particles from impacting the cleaning part 2, thereby realizing the normal operation of the device and automatically cleaning.

[0025] Further references Figure 2 The main body 1 is also provided with an air inlet 111 connected to the accommodating cavity 14, and the air inlet 111 is connected to the air source. In the above scheme, the air inlet 111 is connected to the air source, and air can be blown during cleaning to further ensure the cleaning effect. In this embodiment, the air source is high-pressure air, which further improves the cleaning effect.

[0026] Furthermore, the main body 1 includes an upper body 11 and a lower body 12, and a pressure plate 13 provided at one end of the upper body 11 away from the lower body 12, the first connection port 121 is provided on the lower body 12, and the driving member 3 is provided on the pressure plate 13. The arrangement of the upper body 11 and the lower body 12 reduces the difficulty of processing. The upper body 11 is pressed onto the lower body 12 through the pressure plate 13, and the driving member 3 is provided on the upper body 11 at the same time, which is easy to install. In this embodiment, the driving member 3 is preferably a micro cylinder, which is easy to control and not easily affected by dust.

[0027] In this embodiment, the cleaning member 2 is a brush arranged corresponding to the inner wall of the accommodating cavity 14, so that it can be effectively cleaned. If the accommodating cavity 14 is cylindrical, the brush is preferably a ring-shaped soft brush. In addition, there are multiple second connecting ports 122, and multiple second connecting ports 122 are evenly spaced along the circumferential direction of the main body. The second connecting port 122 extends from the direction close to the axis of the main body 1 to the direction close to the first connecting port 121, effectively avoiding each first connecting port 121 from spraying particles into other first connecting ports 121 when transporting particles. The first connecting port 121 is a conical channel, and the particles can be effectively dispersed in the conical channel, and then enter the mixing barrel connected to it.

[0028] When the multi-channel dust-generating nozzle capable of automatic cleaning described in the present invention is used, the cleaning part 2 is arranged at the uppermost end of the accommodating chamber 14, and the particulate matter is introduced by the pipe 4 connected to the second connecting port 122, thereby entering the accommodating chamber 14. After being dispersed in the accommodating chamber 14, it is sent into the mixing barrel through the first connecting port 121. Then, the driving part 3 drives the cleaning part 2 to move, and at the same time, the air inlet 111 is opened to introduce high-pressure gas to start cleaning. After cleaning is completed, the processing of the next sample is continued.

[0029] A particle resuspension device includes a multi-channel dust-generating nozzle that can be automatically cleaned as described in any of the above items. Through the arrangement of the driving member 3 and the cleaning member 2, the inner wall of the accommodating chamber 14 can be effectively cleaned after use. At the same time, the second connecting port 122 is arranged between the first connecting port 121 and the cleaning member 2, which can prevent the cleaning member 2 from affecting the particles during the operation of the device and prevent the particles from impacting the cleaning member 2, thereby achieving normal operation of the device and automatic cleaning.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other form. Any person skilled in the art may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiments made in accordance with the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A multi-channel dust generating nozzle capable of automatic cleaning, characterized in that: The cleaning device comprises a body having a receiving cavity, a first connecting port provided at one end of the body, a cleaning member provided in the receiving cavity away from the first connecting port, a driving member connected to the cleaning member to drive the cleaning member to move toward the first connecting port, and a second connecting port of an external pipe communicating with the receiving cavity, the second connecting port being provided between the cleaning member and the first connecting port; The main body includes an upper body, a lower body detachably connected to the upper body, and a pressing plate arranged at one end of the upper body away from the lower body, and the first connecting port is arranged on the lower body.

2. The multi-channel dust generating nozzle capable of automatic cleaning according to claim 1, characterized in that: The main body is further provided with an air inlet communicated with the accommodating cavity, and the air inlet is connected to an air source.

3. The multi-channel dust generating nozzle capable of automatic cleaning according to claim 2, characterized in that: The driving component is arranged on the pressing plate.

4. The multi-channel dust generating nozzle capable of automatic cleaning according to claim 3, characterized in that: The driving member is a micro cylinder.

5. The multi-channel dust generating nozzle capable of automatic cleaning according to claim 4, characterized in that: The cleaning member is a brush arranged corresponding to the inner wall of the accommodating cavity.

6. The multi-channel dust generating nozzle capable of automatic cleaning according to claim 5, characterized in that: There are multiple second connection ports, and the second connection ports extend from a direction close to the axis of the body to a direction close to the first connection port.

7. The multi-channel dust generating nozzle capable of automatic cleaning according to claim 1, characterized in that: The first connecting port is a tapered channel.

8. A particle resuspension device, characterized in that: The utility model comprises a multi-channel dust-generating nozzle capable of automatic cleaning as claimed in any one of claims 1 to 7.

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