Metal dust sample sampler

Abstract

The utility model relates to the technical field of occupational health monitoring, and discloses a metal dust sample sampler which comprises a movable bottom plate, a collecting tank rotating switching part and a metal dust sample collecting part, and universal wheels are fixedly mounted on the outer wall of the bottom of the movable bottom plate. In the metal dust sampling process, a plurality of samples often need to be collected or metal dust in different time periods and different areas needs to be collected and analyzed respectively, a plurality of collecting tanks can be installed on the rotating plate in advance, and when one collecting tank is full or collecting conditions need to be switched, the collecting tanks can be installed on the rotating plate in advance. The rotating motor drives the rotating plate to rotate, the next empty collecting tank can be quickly switched to a working position and is accurately butted with the feed port, uninterrupted sampling is realized, the collecting tank is stably mounted on the rotating plate through the mounting clamping groove and has good adaptability with the feed port, and the collecting tank is matched with a related conical sealing cover and the like, so that the sampling efficiency is greatly improved. In the rotating switching process and during sampling, metal dust leakage can be effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of occupational health monitoring technology, specifically a metal dust sampler. Background Technology

[0002] Metal dust not only has a serious negative impact on the air quality of the working environment, causing the air in the workshop to be turbid and the visibility to be reduced, affecting the normal operation and work efficiency of workers, but also poses a great threat to the health of workers.

[0003] However, existing metal dust sampling technologies and equipment have many shortcomings and deficiencies. Traditional samplers are often structurally simple and have limited sampling functions. Most samplers can only perform simple dust collection and lack the ability to effectively separate and classify metal dust of different particle sizes. This makes it difficult to conduct in-depth analysis and research on metal dust and to provide comprehensive and accurate metal dust information data for industrial production. In terms of sampling efficiency, traditional samplers have a slow sampling speed and cannot collect a sufficient amount of representative metal dust samples in a short time. Especially in environments with low metal dust concentrations, this requires a lot of time and manpower, which seriously restricts the efficiency and timeliness of sampling work. Utility Model Content

[0004] The purpose of this invention is to provide a metal dust sampler to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a metal dust sampler, comprising a movable base plate, a collection tank rotation switching part, and a metal dust sample collection part. The bottom outer wall of the movable base plate is fixedly equipped with casters, and the top of the movable base plate is fixedly equipped with a push handle. The collection tank rotation switching part is located on the top of the movable base plate. The metal dust sample collection part is located on the top of the collection tank rotation switching part.

[0006] Preferably, the rotating switching part of the collection tank specifically includes: a storage bucket, fixedly installed on the top of the movable base plate; a vent, equidistantly spaced on the outer wall of the storage bucket; a feed inlet, located on the top of the storage bucket; and a take-out outlet, located on the top of the storage bucket.

[0007] Preferably, a support leg is fixedly installed on the inner wall of the storage bucket, a support block is fixedly installed on the top of the support leg, a circular groove is opened on the top of the support block, a rotating motor is fixedly installed on the inner wall of the storage bucket, and the output end of the rotating motor moves through the bottom of the support block and extends to the top of the support block.

[0008] A rotating motor is incorporated to enable automatic switching of collection containers during sampling. The motor precisely drives the rotating plate, aligning different collection containers sequentially with the inlet and outlet. This is highly advantageous when collecting multiple samples of different time periods, locations, or types of metal dust, improving sampling flexibility and continuity. Since the rotating motor can adjust the container position at any time according to a preset program or remote control command, even if a container malfunctions or becomes full during sampling, it can quickly switch to a backup container to continue sampling without interrupting the entire workflow. This flexibility is particularly important in complex environments where frequent manual intervention is difficult.

[0009] Preferably, a rotating plate is fixedly installed at the output end of the rotating motor. The top circumference of the rotating plate is provided with mounting slots at equal intervals. A collection tank is fitted inside the mounting slots. A shaft is fixedly connected to the bottom outer wall of the rotating plate at equal intervals. A roller is movably sleeved on the outer wall of the shaft. The roller is slidably installed inside the annular groove. The collection tank is adapted to the feed inlet and the discharge outlet respectively. A collection outlet is provided at the top of the collection tank.

[0010] Preferably, a sleeve is fixedly installed on the inner wall of the collection tank, a spring is fixedly installed on the inner wall of the sleeve, a sliding rod is fixedly connected to the other end of the spring, the sliding rod is slidably connected to the sleeve, and an ear plate is fixedly connected to the other end of the sliding rod.

[0011] A sleeve is installed inside the collection tank, providing a stable mounting base and guiding structure for components such as springs and sliding rods. One end of the spring is fixed to the inner wall of the sleeve, and the other end is connected to the sliding rod, which slides within the sleeve. This structure allows the conical sealing cap to flexibly open and close the collection port under specific conditions.

[0012] Preferably, a conical sealing cover is fixedly installed between the ear plates, the conical sealing cover is adapted to the collection port, ventilation holes are equidistantly opened on the bottom circumference of the collection tank, and a screen plate is provided inside the collection tank, the screen plate is fixedly sleeved on the outer wall of the sleeve.

[0013] Preferably, the metal dust sample collection unit specifically includes: an exhaust fan, fixedly installed on the top of the collection bucket; an exhaust box, fixedly installed on the top of the collection bucket; and an exhaust pipe, disposed on the top of the collection bucket.

[0014] An exhaust fan is installed, connected to the exhaust box via an exhaust duct, which generates a strong and stable negative pressure suction. When the exhaust fan is started, this negative pressure is conducted along the exhaust system, causing metal dust to pass sequentially through the collection hopper, collection block, and collection ventilation duct under the influence of the external air pressure difference into the exhaust box, and then be guided into the collection tank.

[0015] Preferably, the top of the exhaust box is connected to a collecting ventilation pipe, the top of the collecting ventilation pipe is connected to a collecting block, and the outer wall of the collecting block is circumferentially connected to collecting hoppers. The exhaust box is connected to the exhaust pipe, the other end of the exhaust pipe is connected to the exhaust fan, the outer wall of the exhaust box is connected to a connecting pipe, the other end of the connecting pipe is connected to a transition block, the bottom outer wall of the transition block is connected to an output pipe, the inside of the output pipe is slidably connected to a sliding passage pipe, the sliding passage pipe is connected to the output pipe, the outer wall of the sliding passage pipe is fitted with a return spring, the other end of the sliding passage pipe is connected to a spherical head, one end of the return spring is fixedly connected to the output pipe, the other end of the return spring is fixedly connected to the spherical head, and the spherical head is adapted to the feed inlet and the collecting passage respectively.

[0016] A return spring is incorporated, playing a crucial role during collection tank switching. When switching collection tanks is necessary, the rotating motor drives the rotating plate to align the new collection tank with the feed inlet. At this point, the spherical head, under the elastic force of the return spring, separates from the collection port of the previous collection tank and fits tightly against the collection port of the new collection tank. This design ensures that the metal dust sampling channel can quickly and seamlessly switch to the new collection tank during the switching process, preventing dust leakage or sampling interruptions.

[0017] This invention provides a metal dust sampler. It has the following advantages:

[0018] (1) In the process of metal dust sampling, it is often necessary to collect multiple samples or collect and analyze metal dust in different time periods and different areas. Multiple collection cans can be installed on the rotating plate in advance. When a collection can is full or the collection conditions need to be switched, the rotating plate can be rotated by the rotating motor to quickly switch the next empty collection can to the working position and accurately connect with the feed inlet to achieve uninterrupted sampling. The collection can is stably installed on the rotating plate by the mounting slot and has good compatibility with the feed inlet. With the help of related conical sealing covers, metal dust leakage can be effectively prevented during the rotation switching process and during sampling.

[0019] (2) This utility model uses a metal dust sample collection part to generate a strong suction force through a fan, which can create a negative pressure environment over a large area, so that the air containing metal dust is quickly sucked into the sampling system. The sliding connection design of the sliding pipe and the output pipe, as well as the cooperation of the return spring and the ball head, can ensure a good seal between the pipeline and the inlet of the collection tank during the switching of the collection tank and during normal sampling. The ball head fits tightly against the inlet or collection port under the action of the return spring, effectively preventing leakage of metal dust during transmission and collection, and avoiding sample loss due to dust leakage. Attached Figure Description

[0020] Figure 1 This is a frontal perspective view of the overall structure of this utility model;

[0021] Figure 2 This is a partial view of the rotating switching part of the collection tank of this utility model;

[0022] Figure 3 This is a partial view of the sleeve of this utility model;

[0023] Figure 4 This is a partial view of the metal dust sample collection part of this utility model.

[0024] In the diagram: 1. Movable base plate, 2. Movable base plate, 3. Rotating switching part of collection tank, 311. Storage bucket, 312. Ventilation port, 313. Feed inlet, 314. Take-out port, 315. Collection tank, 316. Rotating plate, 317. Rotating motor, 318. Support leg, 319. Circular groove, 3111. Shaft, 3112. Collection port, 3113. Sleeve, 3114. Spring, 3115. Slide rod, 3116. Conical sealing cover, 3117. Ear plate, 3118. Screen plate, 3119. Support block, 4. Metal dust sample collection part, 411. Exhaust fan, 412. Exhaust pipe, 413. Exhaust box, 414. Collection ventilation pipe, 415. Collection block, 416. Collection hopper, 417. Connecting pipe, 418. Adapter block, 419. Output pipe, 4111. Sliding pipe, 4112. Return spring, 4113. Spherical head, 5. Push handle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] Example 1:

[0028] A preferred embodiment of the metal dust sampler provided by this utility model is, for example... Figure 1-4 As shown: A metal dust sampler includes a movable base plate 1, a collection tank rotation switching part 3, and a metal dust sample collection part 4. The bottom outer wall of the movable base plate 1 is fixedly installed with casters 2, and the top of the movable base plate 1 is fixedly installed with a push handle 5. The collection tank rotation switching part 3 is located on the top of the movable base plate 1. The metal dust sample collection part 4 is located on the top of the collection tank rotation switching part 3.

[0029] The rotating switching part 3 of the collection tank specifically includes: a storage tank 311, which is fixedly installed on the top of the movable base plate 1; a vent 312, which is equidistantly opened on the outer wall of the storage tank 311; a feed inlet 313, which is opened on the top of the storage tank 311; and a take-out outlet 314, which is opened on the top of the storage tank 311.

[0030] The inner wall of the storage bucket 311 is fixedly installed with a support leg 318, and the top of the support leg 318 is fixedly installed with a support block 3119. The top of the support block 3119 is provided with a circular groove 319. The inner wall of the storage bucket 311 is fixedly installed with a rotating motor 317. The output end of the rotating motor 317 moves through the bottom of the support block 3119 and extends to the top of the support block 3119.

[0031] A rotating plate 316 is fixedly installed at the output end of the rotating motor 317. The top circumference of the rotating plate 316 is provided with mounting slots at equal intervals. A collection tank 315 is installed inside the mounting slots. A shaft 3111 is fixedly connected to the bottom outer wall of the rotating plate 316 at equal intervals. A roller is movably sleeved on the outer wall of the shaft 3111. The roller is slidably installed inside the annular groove 319. The collection tank 315 is adapted to the feed port 313 and the take-out port 314 respectively. A collection port 3112 is provided at the top of the collection tank 315.

[0032] A sleeve 3113 is fixedly installed on the inner wall of the collection tank 315. A spring 3114 is fixedly installed on the inner wall of the sleeve 3113. A sliding rod 3115 is fixedly connected to the other end of the spring 3114. The sliding rod 3115 is slidably connected to the sleeve 3113. An ear plate 3117 is fixedly connected to the other end of the sliding rod 3115.

[0033] A conical sealing cover 3116 is fixedly installed between the ear plates 3117. The conical sealing cover 3116 is adapted to the collection port 3112. Ventilation holes are equidistantly opened on the bottom circumference of the collection tank 315. A screen plate 3118 is installed inside the collection tank 315. The screen plate 3118 is fixedly sleeved on the outer wall of the sleeve 3113.

[0034] In this embodiment, the rotating motor 317 is started, and the rotating plate 316 is driven to rotate slowly. The shaft 3111 at the bottom of the rotating plate 316 and the rollers on its outer wall slide smoothly in the annular groove 319, ensuring that the rotation of the rotating plate 316 is stable and accurate. The rotating plate 316 drives the collection tank 315 to rotate, and rotates the next empty collection tank 315 to below the feed inlet 313 to continue the collection of metal dust. The next empty collection tank can be quickly switched to the working position and accurately docked with the feed inlet to achieve uninterrupted sampling. During the rotation switching process and sampling, metal dust leakage can be effectively prevented.

[0035] Example 2:

[0036] Based on Embodiment 1, a preferred embodiment of the metal dust sampler provided by this utility model is as follows: Figure 1-4 As shown: The metal dust sample collection unit 4 specifically includes: an exhaust fan 411, which is fixedly installed on the top of the collection bucket 311; an exhaust box 413, which is fixedly installed on the top of the collection bucket 311; and an exhaust pipe 412, which is set on the top of the collection bucket 311.

[0037] The top of the exhaust box 413 is connected to a collection ventilation pipe 414, the top of the collection ventilation pipe 414 is connected to a collection block 415, and the outer wall of the collection block 415 is equidistantly connected to collection hoppers 416. The exhaust box 413 is connected to an exhaust pipe 412, the other end of the exhaust pipe 412 is connected to an exhaust fan 411, the outer wall of the exhaust box 413 is connected to a connecting pipe 417, the other end of the connecting pipe 417 is connected to a transition block 418, and the bottom outer wall of the transition block 418 is connected to an output. The output pipe 419 has a sliding tube 4111 inside it. The sliding tube 4111 is connected to the output pipe 419. The outer wall of the sliding tube 4111 is fitted with a return spring 4112. The other end of the sliding tube 4111 is connected to a ball head 4113. One end of the return spring 4112 is fixedly connected to the output pipe 419, and the other end of the return spring 4112 is fixedly connected to the ball head 4113. The ball head 4113 is adapted to the feed port 313 and the collection port 3112 respectively.

[0038] In this embodiment, air containing metal dust enters the sampling system through the collection hopper 416. Under the suction force of the exhaust fan 411, it passes through the collection ventilation pipe 414, the exhaust box 413, the connecting pipe 417, the adapter block 418, the output pipe 419, and the sliding pipe 4111, and finally enters the collection tank 315 through the spherical head 4113 and the inlet 313. Inside the collection tank 315, the spherical head 4113 pushes open the conical sealing cover 3116, causing the conical sealing cover 3116 to move downwards and open the collection port 3112, allowing the metal dust to enter the collection tank. The main body of the collecting tank 315, when the airflow passes through the ventilation holes at the bottom of the collecting tank 315, metal dust of different particle sizes will be initially separated on the screen plate 3118 according to their own characteristics. Larger metal dust particles are intercepted by the screen plate 3118 in a specific area at the bottom of the collecting tank, which can ensure a good seal between the pipeline and the inlet of the collecting tank. The spherical head 4113 is tightly fitted to the inlet or collection port under the action of the return spring 4112, which effectively prevents metal dust from leaking during the transmission and collection process and avoids sample loss due to dust leakage.

[0039] Working principle: When using:

[0040] Step 1: First, check the overall appearance of the sampler to ensure that the movable base plate 1 is undamaged and undeformed. Securely install the push handle 5 on the top of the movable base plate 1 to facilitate the operator in moving the sampler. Depending on the actual situation of the sampling location, push the sampler to the designated position by pushing the handle 5. Use the steering and movement function of the casters 2 to accurately position the sampler near the metal dust source or the area that needs to be sampled, ensuring that the sampler is in a stable and easy-to-operate state.

[0041] Step 2: Open the relevant lid or protective device of the collection bucket 311, check whether the support legs 318, support blocks 3119 and annular slide groove 319 inside the collection bucket 311 are clean and free of debris, check whether the output shaft of the rotating motor 317 can rotate smoothly, install the prepared collection cans 315 one by one into the mounting slots on the top of the rotating plate 316, ensuring that the collection cans 315 are installed firmly and in the correct position, with the collection opening 3112 on the top facing upwards. At this time, the conical sealing cover 3116 inside the collection can 315 is in the closed state of the collection opening 3112 under the action of the spring 3114, preventing external impurities from entering the collection can 315. Close the lid or protective device of the collection bucket 311 to ensure good sealing and prepare for subsequent sampling work.

[0042] Step 3: Turn on the exhaust fan 411 and check whether the exhaust fan 411 is operating normally and whether there is any abnormal noise or vibration. After the exhaust fan 411 is started, a negative pressure environment is formed in the sampling system composed of the exhaust box 413, the exhaust pipe 412, etc. At this time, due to the negative pressure, the sliding pipe 4111 slides outward in the output pipe 419, which drives the ball head 4113 to fit tightly with the feed port 313, forming a sealed sampling channel. The collection ventilation pipe 414, the collection block 415 and the collection hopper 416 begin to draw in the surrounding air containing metal dust.

[0043] Step 4: After the air containing metal dust enters the sampling system through the collection hopper 416, it is drawn by the exhaust fan 411 and passes through the collection ventilation pipe 414, the exhaust box 413, the connecting pipe 417, the adapter block 418, the output pipe 419, and the sliding pipe 4111. Finally, it enters the collection tank 315 through the spherical head 4113 and the feed inlet 313. Inside the collection tank 315, the spherical head 4113 pushes open the conical sealing cover 3116, causing it to move downwards and open the collection port 3112. The metal dust enters the main body of the collection tank 315. At the same time, when the airflow passes through the ventilation holes at the bottom of the collection tank 315, metal dust of different particle sizes will be concentrated on the screen plate 3118 according to their own characteristics. Initial separation is achieved. Larger metal dust particles are intercepted by the screen plate 3118 in a specific area at the bottom of the collection tank, while smaller dust particles continue to move with the airflow, further realizing the graded collection of metal dust. When a collection tank 315 is full or reaches the predetermined sampling time, sampling amount, or other conditions, the rotating motor 317 is started. The rotating motor 317 drives the rotating plate 316 to rotate slowly. The shaft 3111 at the bottom of the rotating plate 316 and the rollers on its outer wall slide smoothly in the annular groove 319, ensuring that the rotation of the rotating plate 316 is stable and accurate. The rotating plate 316 drives the collection tank 315 to rotate, rotating the next empty collection tank 315 to below the feed inlet 313 to continue the metal dust collection work.

[0044] Step 5: After sampling is completed, turn off the exhaust fan 411. At this time, the negative pressure in the sampling system disappears, and the reset spring 4112 drives the ball head 4113 and the sliding tube 4111 to return to their initial positions. Disconnect the sealing connection with the feed port 313, open the lid of the collection bucket 311 again, and rotate the collection can 315 containing the metal dust sample to below the take-out port 314 by rotating the motor 317. Take the collection can 315 out of the mounting slot and properly process the collected metal dust sample, such as sealing and storing it and marking the information, so as to carry out subsequent research or testing work such as component analysis and concentration detection. At the same time, clean and maintain the sampler, check whether there is any damage or wear on each component, and prepare for the next sampling work.

[0045] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A metal dust sample sampler comprising a moving base plate (1), a collection tank rotation switching section (3), and a metal dust sample collection section (4), characterized by, The bottom outer wall of the mobile base plate (1) is fixedly installed with universal wheels (2), and the top of the mobile base plate (1) is fixedly installed with a push handrail (5); the collection tank rotating switching part (3) is arranged at the top of the mobile base plate (1); and the metal dust sample collecting part (4) is arranged at the top of the collection tank rotating switching part (3).

2. A metal dust sample sampler according to claim 1, characterised in that The collection tank rotating switching part (3) specifically comprises: A storage barrel (311) is fixedly installed at the top of the mobile base plate (1); A ventilation opening (312) is circumferentially and equidistantly arranged on the outer wall of the storage barrel (311); An inlet (313) is arranged on the top of the storage barrel (311); A taking opening (314) is arranged on the top of the storage barrel (311).

3. A metal dust sample sampler according to claim 2, wherein The inner wall of the storage barrel (311) is fixedly installed with a supporting leg (318), the top of the supporting leg (318) is fixedly installed with a supporting block (3119), the top of the supporting block (3119) is provided with a circular ring sliding groove (319), the inner wall of the storage barrel (311) is fixedly installed with a rotating motor (317), and the output end of the rotating motor (317) is movably penetrated through the bottom of the supporting block (3119) and extends to the top of the supporting block (3119).

4. A metal dust sample sampler according to claim 3, wherein The output end of the rotating motor (317) is fixedly installed with a rotating plate (316), the top of the rotating plate (316) is circumferentially and equidistantly provided with a mounting clamping groove, the collection tank (315) is clamped and mounted in the mounting clamping groove, the bottom outer wall of the rotating plate (316) is circumferentially and equidistantly fixedly connected with a shaft rod (3111), the outer wall of the shaft rod (3111) is movably sleeved with a roller, the roller is slidably installed in the circular ring sliding groove (319), the collection tank (315) is matched with the inlet (313) and the taking opening (314) respectively, and the top of the collection tank (315) is provided with a collecting opening (3112).

5. A metal dust sample sampler according to claim 4, wherein The inner wall of the collection tank (315) is fixedly installed with a sleeve (3113), the inner wall of the sleeve (3113) is fixedly installed with a spring (3114), the other end of the spring (3114) is fixedly connected with a sliding rod (3115), the sliding rod (3115) is slidably connected with the sleeve (3113), and the other end of the sliding rod (3115) is fixedly connected with an ear plate (3117).

6. A metal dust sample sampler according to claim 5, wherein, The ear plates (3117) are fixedly installed with a conical sealing cover (3116), the conical sealing cover (3116) is matched with the collecting opening (3112), the bottom of the collection tank (315) is circumferentially and equidistantly provided with a ventilation round hole, and the inside of the collection tank (315) is provided with a screen plate (3118) which is fixedly sleeved on the outer wall of the sleeve (3113).

7. A metal dust sample sampler according to claim 1, wherein The metal dust sample collecting part (4) specifically comprises: An air extractor (411) is fixedly installed at the top of the storage barrel (311); An air extraction box (413) is fixedly installed at the top of the storage barrel (311); An air extraction pipe (412) is arranged at the top of the storage barrel (311).

8. A metal dust sample sampler according to claim 7, characterised in that The top of the air exhaust box (413) is in communication with a collecting ventilation pipe (414), the top of the collecting ventilation pipe (414) is in communication with a collecting ventilation block (415), the outer wall of the collecting ventilation block (415) is in equidistant communication with collecting hoppers (416), the air exhaust box (413) is in communication with an air exhaust pipe (412), the other end of the air exhaust pipe (412) is in communication with an air exhaust fan (411), the outer wall of the air exhaust box (413) is in communication with a communication pipe (417), the other end of the communication pipe (417) is in communication with an adapter block (418), the bottom outer wall of the adapter block (418) is in communication with an output pipe (419), the inside of the output pipe (419) is slidably connected with a sliding communication pipe (4111), the sliding communication pipe (4111) is in communication with the output pipe (419), the outer wall of the sliding communication pipe (4111) is sleeved with a reset spring (4112), the other end of the sliding communication pipe (4111) is in communication with a spherical head (4113), one end of the reset spring (4112) is fixedly connected with the output pipe (419), the other end of the reset spring (4112) is fixedly connected with the spherical head (4113), and the spherical head (4113) is matched with the feeding port (313) and the collecting ventilation port (3112) respectively.

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