Dust sample mixing device

Abstract

The utility model relates to the technical field of environment and occupational health detection, in particular to a dust sample mixing device which comprises a mixing box and an auxiliary structure, the auxiliary structure is arranged in the mixing box, and the auxiliary structure further comprises a rotating assembly, a cleaning assembly and an electric push rod. An electric push rod drives a circular plate to move upwards along the inner wall of the uniform mixing box, meanwhile, a motor is controlled to rotate, the motor drives a connecting base to move circumferentially through a rotating rod, and the connecting base drives a scraping block to move circumferentially through a guide block to clean the inner wall of the uniform mixing box; in the cleaning process, the elastic force of a spring always acts on a scraping block to abut against the inner wall of the uniform mixing box, the cleaning efficiency of the uniform mixing box is improved, when a circular plate moves to a limiting position, the upper portion of the uniform mixing box is cleaned through the scraping block, and after cleaning is completed, an electric push rod is controlled to move downwards, so that the circular plate moves to the opening position of the uniform mixing box; and then the baffle is opened, and dust on the circular plate is cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental and occupational health detection, in particular to a dust sample mixing device. Background Art

[0002] In some metal manufacturing factories, the dust in the air during the production process may cause harm to employees. Scientists use PM2.5 and PM10 to represent the content of such particles in each cubic meter of air. The higher the value, the more serious the air pollution. PM2.5 and PM10 can cause serious health effects on humans, and even PM2.5 can cause much greater health effects on humans than other inhalable particles. Therefore, it is particularly urgent and timely to conduct research on the detection methods of fine particle / inhalable particle monitoring instruments.

[0003] For example, a dynamic mixing device for particulate matter with the authorization announcement number CN219482434U, the above document cooperates between a motor, a rotating rod, a brush, a feed pipe and a dust collecting bag. The motor drives the rotating rod to rotate, and the rotating rod drives the brush to rotate. The brush cleans the second filter. The dust and impurities on the surface of the second filter enter the dust collecting bag through the feed pipe. The dust collecting bag collects the dust and impurities. The second filter does not need to be cleaned manually. The operation is relatively simple and it is convenient to clean the filter in the air inlet duct. However, the mixing device in the above document requires personnel to open the baffle at the side end of the mixing box during use, and the personnel manually clean the inside of the mixing box. Automatic cleaning of the inside of the mixing box cannot be achieved. Since the space inside the mixing box is relatively small, it is inconvenient for personnel to clean during the cleaning process, which not only has poor cleaning efficiency but also increases labor costs. Utility Model Content

[0004] The utility model aims to solve the problem that the prior art cannot realize automatic cleaning of the interior of a mixing box, and proposes a dust sample mixing device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dust sample mixing device is designed, comprising a mixing box and an auxiliary structure, wherein the auxiliary structure is arranged inside the mixing box, wherein the auxiliary structure further comprises a rotating component, a cleaning component and an electric push rod;

[0007] A cleaning component is arranged on one side of the rotating component, and a plurality of electric push rods are arranged on the other side of the rotating component. The circumference of the plurality of electric push rods is distributed around the rotating component, and the fixed ends of the electric push rods are arranged below the mixing box.

[0008] Preferably, a plurality of legs are fixedly provided around one side of the mixing box, and the interior of the legs is a cavity for fixing the electric push rod;

[0009] The middle part of one side of the mixing box is fixedly connected to the connecting tube, and a plurality of through holes are arranged around the connecting tube;

[0010] A baffle is provided at the middle opening of the mixing box for cleaning the inside of the mixing box.

[0011] Preferably, the rotating assembly comprises a rotating rod, a circular plate and a motor;

[0012] The middle part of the circular plate is rotatably connected to the rotating rod, the end of the rotating rod is fixedly connected to the output shaft of the motor, and the outer ring surface of the circular plate is in contact with the mixing box.

[0013] Preferably, one side of the circular plate adjacent to the motor is fixedly connected to the output ends of a plurality of electric push rods, and the fixed ends of the electric push rods are fixedly arranged on the inner ends of the supporting legs.

[0014] Preferably, the cleaning assembly comprises a connecting seat, a guide block, a scraper block and a spring;

[0015] A guide block is arranged in the middle of the connecting seat, two ends of the spring are respectively fixedly connected to the guide block and the connecting seat, and an end of the guide block is fixedly connected to the scraping block.

[0016] Preferably, the side of the connecting seat away from the guide block is fixedly connected to the rotating rod, and the end of the scraping block away from the guide block is tightly pressed against the inner wall of the mixing box.

[0017] Preferably, a guide cavity is provided in the middle of the connecting seat, a connecting groove is provided at the extending end of the connecting seat, and the connecting groove passes through the connecting seat and is in communication with the guide cavity;

[0018] The guide cavity matches with a side of the guide block away from the scraper block, the connecting groove matches with a side of the guide block adjacent to the scraper block, and the spring is arranged inside the guide cavity.

[0019] The utility model proposes a dust sample mixing device, the beneficial effect of which is that the circular plate is driven to move upward along the inner wall of the mixing box by an electric push rod, and the motor is controlled to rotate at the same time, the motor drives the connecting seat to move circumferentially through the rotating rod, and the connecting seat drives the scraper block to move circumferentially through the guide block to clean the inner wall of the mixing box, and during the cleaning process, the elastic force of the spring always acts on the scraper block to press against the inner wall of the mixing box, which improves the cleaning efficiency of the mixing box, and when the circular plate moves to the extreme position, the scraper block is used to clean the top of the mixing box, and after the cleaning is completed, the electric push rod is controlled to move downward, so that the circular plate moves to the opening position of the mixing box, and then the baffle is opened to clean the dust on the circular plate, thereby realizing the start-up cleaning of the interior of the mixing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 for Figure 1 A side view structural schematic diagram of;

[0022] Figure 3 It is a schematic diagram of the top view of the cleaning component and the rotating component of the utility model;

[0023] Figure 4 It is a schematic diagram of the top view of the mixing box of the utility model;

[0024] Figure 5 This is a structural exploded view of the cleaning component and the rotating component of the utility model.

[0025] In the figure: 1. mixing box; 101. support foot; 102. connecting tube; 1021. through hole; 103. baffle; 2. rotating assembly; 201. rotating rod; 202. round plate; 203. motor; 3. cleaning assembly; 301. connecting seat; 3011. guide cavity; 3012. connecting groove; 302. guide block; 303. scraper block; 304. spring; 4. electric push rod. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] This embodiment proposes a dust sample mixing device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it includes a mixing box 1 and an auxiliary structure. The interior of the mixing box 1 is provided with an auxiliary structure, wherein the auxiliary structure also includes a rotating component 2, a cleaning component 3 and an electric push rod 4. The cleaning component 3 is provided on one side of the rotating component 2. The electric push rod 4 is used to control the rotating component 2 to move along the inner wall of the mixing box 1. A plurality of electric push rods 4 are provided on the other side of the rotating component 2, and the circumference of the plurality of electric push rods 4 is distributed around the rotating component 2. The fixed end of the electric push rod 4 is provided below the mixing box 1. The middle of the top of the mixing box 1 is a particle inlet, and the two sides of the top of the mixing box 1 are clean air inlets. The two sides of the mixing box 1 are respectively connected to the air inlet pipe and the air outlet. The air inlet pipe is used to connect the fan, and the clean air inlet, the air inlet pipe and the air outlet are all provided with filters to prevent external dust from entering the interior of the mixing box 1. The rear side of the mixing box 1 is respectively provided with an interface for the instrument to be tested, an interface for a standard calibrator, and an interface for a gravimetric standard sampler.

[0028] A plurality of legs 101 are fixedly arranged around one side of the mixing box 1, and the interior of the legs 101 is a cavity for fixing the electric push rod 4. The middle part of one side of the mixing box 1 is fixedly connected to the connecting tube 102. A plurality of through holes 1021 are arranged around the connecting tube 102. A baffle 103 is arranged at the middle opening position of the mixing box 1 for cleaning the inside of the mixing box 1.

[0029] The rotating assembly 2 includes a rotating rod 201, a circular plate 202 and a motor 203. The middle part of the circular plate 202 is rotatably connected to the rotating rod 201, and the end of the rotating rod 201 is fixedly connected to the output shaft of the motor 203. The circular plate 202 can drive the motor 203 and the rotating rod 201 to move, and the motor 203 can drive the rotating rod 201 to rotate. The outer ring surface of the circular plate 202 fits with the mixing box 1, and the side of the circular plate 202 adjacent to the motor 203 is fixedly connected to the output ends of multiple electric push rods 4. The fixed end of the electric push rod 4 is fixedly set at the inner end of the support foot 101. The electric push rod 4 can drive the circular plate 202 to move. When the circular plate 202 follows the electric push rod 4 to move in the direction of the electric push rod 4, the motor 203 can move to the inside of the connecting tube 102, and the motor 203 is cooled through the through hole 1021 during the working process of the motor 203.

[0030] The cleaning assembly 3 includes a connecting seat 301, a guide block 302, a scraper block 303 and a spring 304. The guide block 302 is arranged in the middle of the connecting seat 301, and the two ends of the spring 304 are fixedly connected to the guide block 302 and the connecting seat 301 respectively. The end of the guide block 302 is fixedly connected to the scraper block 303. When the electric push rod 4 drives the circular plate 202 to move to the limit position, the distance between the top of the circular plate 202 and the top of the inner wall of the mixing box 1 is the same as the height of the scraper block 303. The side of the connecting seat 301 away from the guide block 302 is fixedly connected to the rotating rod 201, and the end of the scraper block 303 away from the guide block 302 is pressed against the inner wall of the mixing box 1. The rotating rod 201 can drive the connecting seat 301 to move circumferentially, and the connecting seat 301 drives the guide block 302 to move circumferentially. The guide block 3 02 drives the scraper block 303 to move circumferentially to clean the inner wall of the mixing box 1. A guide cavity 3011 is arranged in the middle of the connecting seat 301, and a connecting groove 3012 is arranged at the extending end of the connecting seat 301, and the connecting groove 3012 passes through the connecting seat 301 and is connected with the guide cavity 3011. The guide cavity 3011 matches the side of the guide block 302 away from the scraper block 303, and the connecting groove 3012 matches the side of the guide block 302 adjacent to the scraper block 303. The spring 304 is arranged inside the guide cavity 3011, and the guide block 302 is affected by the elastic force of the spring 304 to be able to move along the guide cavity 3011 and the connecting groove 3012. The scraper block 303 is affected by the elastic force of the spring 304 and is always pressed against the inner wall of the mixing box 1, thereby ensuring that the scraper block 303 fully cleans the mixing box 1.

[0031] Specifically, after the inspection of fine particles of dust collected from factories, etc. is completed by the mixing box 1, the electric push rod 4 is controlled, and the electric push rod 4 drives the circular plate 202 to move upward along the inner wall of the mixing box 1, and at the same time controls the motor 203 to rotate, and the motor 203 drives the connecting seat 301 to move circumferentially through the rotating rod 201, and the connecting seat 301 drives the guide block 302 to move circumferentially, and the guide block 302 drives the scraper block 303 to move circumferentially to clean the inner wall of the mixing box 1. During the cleaning process, the elastic force of the spring 304 always acts on the scraper block 303 to press against the inner wall of the mixing box 1, which improves the cleaning efficiency of the mixing box 1. When the circular plate 202 moves to the extreme position, the scraper block 303 is used to clean the top of the mixing box 1. After the cleaning is completed, the electric push rod 4 is controlled to move downward, so that the circular plate 202 moves to the opening position of the mixing box 1, and then the baffle 103 is opened to clean the dust on the circular plate 202, thereby starting the cleaning of the interior of the mixing box 1.

[0032] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A dust sample mixing device, characterized in that: It includes a mixing box and an auxiliary structure, wherein the auxiliary structure is arranged inside the mixing box, wherein the auxiliary structure also includes a rotating component, a cleaning component and an electric push rod; A cleaning component is arranged on one side of the rotating component, and a plurality of electric push rods are arranged on the other side of the rotating component. The circumference of the plurality of electric push rods is distributed around the rotating component, and the fixed ends of the electric push rods are arranged below the mixing box.

2. A dust sample mixing device according to claim 1, characterized in that: A plurality of legs are fixedly arranged around one side of the mixing box, and the interior of the legs is a cavity for fixing the electric push rod; The middle part of one side of the mixing box is fixedly connected to the connecting tube, and a plurality of through holes are arranged around the connecting tube; A baffle is provided at the middle opening of the mixing box for cleaning the inside of the mixing box.

3. The dust sample mixing device according to claim 1, characterized in that: The rotating assembly includes a rotating rod, a circular plate and a motor; The middle part of the circular plate is rotatably connected to the rotating rod, the end of the rotating rod is fixedly connected to the output shaft of the motor, and the outer ring surface of the circular plate is in contact with the mixing box.

4. The dust sample mixing device according to claim 3, characterized in that: One side of the circular plate adjacent to the motor is fixedly connected to the output ends of a plurality of electric push rods, and the fixed ends of the electric push rods are fixedly arranged on the inner ends of the supporting feet.

5. The dust sample mixing device according to claim 1, characterized in that: The cleaning assembly comprises a connecting seat, a guide block, a scraper block and a spring; A guide block is arranged in the middle of the connecting seat, two ends of the spring are respectively fixedly connected to the guide block and the connecting seat, and an end of the guide block is fixedly connected to the scraping block.

6. The dust sample mixing device according to claim 5, characterized in that: The side of the connecting seat away from the guide block is fixedly connected to the rotating rod, and the end of the scraping block away from the guide block is tightly pressed against the inner wall of the mixing box.

7. The dust sample mixing device according to claim 5, characterized in that: A guide cavity is provided in the middle of the connecting seat, a connecting groove is provided at the extending end of the connecting seat, and the connecting groove penetrates the connecting seat and is in communication with the guide cavity; The guide cavity matches with a side of the guide block away from the scraper block, the connecting groove matches with a side of the guide block adjacent to the scraper block, and the spring is arranged inside the guide cavity.

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