A liftable and rotatable sampling device

Abstract

The utility model discloses a liftable rotary sampling device, including seat body, axle stem, sampling unit, first drive unit and second drive unit, the axle stem adjustable height position is connected with seat body, first drive unit is located on seat body and can drive axle stem displacement, sampling unit includes the scraper, sampling unit is fixed in the axle stem end and can rotate under the action of second drive unit, to complete sampling operation. The utility model discloses reasonable in structure, avoids scraping sampling unit, and it is favorable for improving the life.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, specifically a lifting and rotating sampling device. Background Technology

[0002] In industrial production, some special locations, such as pharmaceutical factories and food processing plants, have extremely stringent air quality requirements. Ventilation duct sampling robots can monitor dust particles, harmful gases, microorganisms, and other pollutants in ventilation systems in real time, providing accurate data for quality control of the production environment and ensuring product quality and safety. In existing sampling robots, the sampling unit is used to collect or gather samples, and its position is often fixed at a fixed height. As the sampling robot moves along the ventilation duct, it is very easy for it to scrape against the inner wall of the duct or its protrusions, easily causing wear and tear on the sampling device and hindering cost reduction. Utility Model Content

[0003] This utility model discloses a height-adjustable and rotatable sampling device, which solves the technical problem in the prior art where the sampling unit of the sampling device has a fixed height position, making it easy to scratch the sampling unit when the sampling device is displaced for sampling. It has the technical advantages of reasonable structure, avoiding scratching of the sampling unit, and improving service life. The technical solution adopted is as follows: A height-adjustable and rotatable sampling device includes a base body, a shaft, a sampling unit, a first driving unit, and a second driving unit. The shaft is connected to the base body with adjustable height. The first driving unit is mounted on the base body and can drive the shaft to move up and down. The sampling unit includes a scraper. The sampling unit is fixed to the end of the shaft and can rotate under the action of the second driving unit to complete the sampling operation.

[0004] Based on the above technical solution, the sampling unit is covered with a protective cover, which is designed to remain close to the surface to be sampled when the scraper contacts the surface to be sampled. Preferably, the bottom surface of the protective cover is provided with an annular rubber pad.

[0005] Based on the above technical solution, the two opposite side walls of the protective cover are respectively formed with an air inlet and an air outlet. When the airflow passes through the air inlet and the air outlet, it carries the sample scraped by the scraper outward.

[0006] Based on the above technical solution, the sampling unit further includes a left clamping arm and a right clamping arm, which are hinged by a torsion spring to clamp the scraper.

[0007] Based on the above technical solution, it also includes a first bushing, a second bushing, and a third bushing. The first bushing is rotatably connected to the seat body and can rotate under the action of the first drive unit. The second bushing is sleeved inside the first bushing and threadedly connected to the first bushing. The shaft passes through the hollow cavity of the second bushing and is rotatably connected to the second bushing. The third bushing is sleeved inside the first bushing and rotatably connected to the first bushing. The head end of the shaft is inserted into the third bushing with a clearance fit. The second drive unit can transmit rotational motion to the third bushing to drive the sampling unit to rotate.

[0008] Based on the above technical solution, the first drive unit includes a first motor fixed on the seat body, and the first motor transmits rotational motion to the first bushing through a belt drive assembly; the second drive unit includes a second motor fixed on the seat body, and the second motor transmits rotational motion to the third bushing through a belt drive assembly.

[0009] Based on the above technical solution, it also includes a third outer cylinder sleeved outside the third bushing. The inner edge of the top of the third outer cylinder extends horizontally inward and is fixedly connected to the third bushing. The third outer cylinder is rotatably connected to the first bushing through a bearing.

[0010] Based on the above technical solution, the inner diameter of the second bushing is larger than the outer diameter of the third bushing, and the shaft is rotatably connected to the second bushing at the lower part of the second bushing.

[0011] Based on the above technical solution, it also includes at least one guide post, which is arranged parallel to the axis of the shaft. One end of the guide post is fixed to the protective cover, and the other end of the guide post passes through the seat body and is slidably connected to the seat body.

[0012] Based on the above technical solution, it also includes a bracket, a first limit switch and a second limit switch fixed on the seat body and arranged vertically, wherein the bracket is fixed to the sampling unit and can be identified by the first limit switch or the second limit switch.

[0013] Beneficial effects This utility model has a reasonable structure. The sampling unit is fixed at the end of the shaft. On the one hand, the scraper can rotate to scrape the sample from the surface to be sampled, which is conducive to more complete sampling. On the other hand, the sampling unit can move up and down with the shaft, which can avoid the sampling unit accidentally touching the surface to be sampled when not sampling. It can also effectively avoid scraping the inner wall of the ventilation duct or its protrusions, which helps to improve the service life and ensure that the sampling is carried out smoothly.

[0014] In this invention, the sampling unit is further covered by a protective cover with an air inlet and an air outlet. During sampling, the protective cover and the surface to be sampled form a relatively sealed space, and the collected particulate matter sample can be discharged outward with the airflow and collected, demonstrating a reasonable design. Furthermore, the scraper is fixed by a clamping method, facilitating replacement and maintenance, and making it convenient to use.

[0015] The first, second, and third bushings of this invention are ingeniously designed, and a belt drive assembly is used to transmit rotational motion to the first and third bushings respectively. This results in a compact structure that allows the sampling unit to rotate while also moving up and down, improving work efficiency. Furthermore, the three bushings, arranged with belt drive, minimize vertical space occupation, contributing to miniaturization and enabling efficient sampling even in confined spaces. The inner diameter of the second bushing is larger than the outer diameter of the third bushing, and the shaft is rotatably connected to the lower part of the second bushing. This allows for a wider vertical travel range of the sampling unit within a limited space, enhancing its versatility. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0017] Figure 1 Schematic diagram of the three-dimensional structure of this utility model Figure 1 ; Figure 2 Schematic diagram of the three-dimensional structure of this utility model Figure 2 ; Figure 3 : A three-dimensional cross-sectional view of this utility model; Figure 4 : A three-dimensional structural diagram of the sampling unit fixed at the end of the shaft in this utility model; Detailed Implementation The following description and accompanying drawings fully illustrate specific embodiments described herein to enable those skilled in the art to practice them. Some embodiments may include or substitute parts and features of other embodiments. The scope of the embodiments herein encompasses the entire scope of the claims and all available equivalents thereof. Throughout this document, the terms “first,” “second,” etc., are used only to distinguish one element from another without requiring or implying any actual relationship or order between the elements. Indeed, a first element can also be referred to as a second element, and vice versa. Furthermore, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a structure, apparatus, or device. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the structure, apparatus, or device that includes said element. The various embodiments described herein are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments; similar or identical parts between embodiments can be referred to interchangeably.

[0018] The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used in this document to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing the document and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description herein, unless otherwise specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two elements; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0019] In this document, unless otherwise stated, the term "multiple" means two or more.

[0020] In this article, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0021] In this article, the term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0022] like Figures 1-4The illustrated lifting and rotating sampling device includes a base body 1, a shaft 2, a sampling unit 3, a first bushing 7, a second bushing 8, a third bushing 9, a first drive unit 4, and a second drive unit 5.

[0023] The shaft 2 is connected to the seat body 1 with adjustable vertical height. The first drive unit 4 is located on the seat body 1 and can drive the shaft 2 to move up and down. Specifically, the seat body 1 is fixedly set and has a central hole. The first bushing 7 passes through the central hole and is rotatably connected to the seat body 1 through a bearing. In this embodiment, the seat body 1 can be fixed on a traveling frame. The traveling frame is equipped with multiple wheels and can move forward along a rectangular cross-section pipe under the action of the drive unit.

[0024] The first drive unit 4 includes a first motor fixed on the base body 1. The first motor transmits rotational motion to the first bushing 7 through a belt drive assembly. The belt drive assembly is existing technology and can be selected by those skilled in the art according to their needs. like Figure 3 As shown, the first bushing 7 has an internal thread, and the second bushing 8 is fitted inside the first bushing 7 and threadedly connected to the first bushing 7. Thus, when the first motor transmits rotational motion to the first bushing 7, it can drive the second bushing 8 to move downward relative to the first bushing 7.

[0025] The shaft 2 passes through the hollow cavity of the second bushing 8 and is rotatably connected to the second bushing 8 via a bearing, so that the shaft 2 and the second bushing 8 move up and down synchronously.

[0026] The sampling unit 3 is fixed at the end of the shaft 2 and can rotate under the action of the second drive unit 5 to complete the sampling operation. Specifically, the end of the shaft 2 extends downward to the outside of the second bushing 8, the sampling unit 3 is fixed at the end of the shaft 2, and the second drive unit 5 includes a second motor fixed on the seat body 1. The second motor transmits the rotational motion to the third bushing 9 through a belt drive assembly. The belt drive assembly is existing technology and can be selected by those skilled in the art according to their needs. like Figure 3 As shown, the third bushing 9 is located near the upper end of the first bushing 7 and is fitted inside the first bushing 7. It also includes a third outer cylinder 91, which is coaxially fitted outside the third bushing 9. The inner edge of the top of the third outer cylinder 91 extends horizontally inward and is fixedly connected to the top flange of the third bushing 9. The third outer cylinder 91 is rotatably connected to the first bushing 9 via a bearing, facilitating assembly and disassembly. The inner diameter of the second bushing 8 is larger than the outer diameter of the third bushing 9, and the shaft 2 is rotatably connected to the second bushing 8 at its lower part. This allows for a large range of vertical displacement for the shaft 2 and the second bushing 8, facilitating flexible adjustment.

[0027] like Figure 3As shown, the first end of the shaft 2 is inserted into the third bushing 9 with a clearance fit. In this embodiment, the cross-section of the first end of the shaft 2 is flat, but other polygonal shapes can also be used. In this way, the second drive unit 5 can transmit the rotational motion to the third bushing 9 to drive the sampling unit to rotate.

[0028] like Figure 4 As shown, the sampling unit 3 also includes a left clamping arm 31 and a right clamping arm 32, which are hinged by a torsion spring to clamp the scraper 33. In this embodiment, the scraper 33 is made of silicone, and the thickness of the end section of the scraper 33 that contacts the surface to be sampled gradually decreases, thus facilitating the scraping of the sample.

[0029] The sampling unit 3 is covered by a protective cover 6, which is fixed to the shaft 2. The bottom surface of the protective cover 6 has an annular rubber pad, and the vertical height of the protective cover 6 is designed so that when the scraper 33 contacts the surface to be sampled, the protective cover 6 is close to the surface, thus forming a relatively sealed space between the protective cover 6 and the surface to be sampled during sampling, preventing sample from splashing outwards. Figure 3 As shown, the inner wall of the protective cover 6 is annular, and the width of the scraper 33 is close to the inner diameter of the annulus.

[0030] The protective cover 6 has an air inlet 61 and an air outlet 62 on its opposite side walls. When the airflow passes through the air inlet 61 and the air outlet 62, the sample scraped by the scraper 33 is discharged outward, thus providing conditions for automated sample collection.

[0031] like Figure 1 and 2 As shown, it also includes two guide posts 13, which are arranged parallel to the axis of the shaft 2. In this embodiment, one end of the guide post 13 is fixedly connected to the cover 6, and the other end of the guide post 13 passes through the seat body 1 and is slidably connected to the seat body 1. In addition, two linear bearings are fixedly installed on the seat body 1, and the two linear bearings are respectively sleeved on the guide post 13 to ensure the stability and smoothness of the vertical displacement.

[0032] In addition, the system includes a bracket 10, a first limit switch 11 and a second limit switch 12 fixedly mounted on the base body 1 and arranged vertically. In this embodiment, the bracket 10 is fixed outside the cover 6 and can be identified by either the first limit switch 11 or the second limit switch 12. The first limit switch 11 and the second limit switch 12 are existing technologies and will not be described in detail here. In this embodiment, when the bracket 10 moves downward with the cover 6 and is identified by the second limit switch 12, the cover 6 stops moving downward; when the bracket 10 moves upward with the cover 6 and is identified by the first limit switch 11, the cover 6 stops moving upward. This limits the vertical movement range of the bracket 10 to between the first limit switch 11 and the second limit switch 12.

[0033] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A lifting and rotating sampling device, characterized in that, The device includes a base body (1), a shaft (2), a sampling unit (3), a first driving unit (4), and a second driving unit (5). The shaft (2) is connected to the base body (1) with adjustable vertical height. The first driving unit (4) is located on the base body (1) and can drive the shaft (2) to move up and down. The sampling unit (3) includes a scraper (33). The sampling unit (3) is fixed at the end of the shaft (2) and can rotate under the action of the second driving unit (5) to complete the sampling operation.

2. The liftable and rotatable sampling device according to claim 1, characterized in that, The sampling unit (3) is covered with a protective cover (6), which is designed to be close to the surface to be sampled when the scraper (33) contacts the surface to be sampled.

3. The liftable and rotatable sampling device according to claim 2, characterized in that, The protective cover (6) has an air inlet (61) and an air outlet (62) on its opposite side walls. When the airflow passes through the air inlet (61) and the air outlet (62), it carries the sample scraped by the scraper (33) outward.

4. The liftable and rotatable sampling device according to claim 1, characterized in that, The sampling unit (3) further includes a left clamping arm (31) and a right clamping arm (32), which are hinged by a torsion spring to clamp the scraper (33).

5. The liftable and rotatable sampling device according to any one of claims 1 to 4, characterized in that, It also includes a first bushing (7), a second bushing (8) and a third bushing (9). The first bushing (7) is rotatably connected to the seat body (1) and can rotate under the action of the first drive unit (4). The second bushing (8) is sleeved in the first bushing (7) and threadedly connected to the first bushing (7). The shaft (2) passes through the hollow cavity of the second bushing (8) and is rotatably connected to the second bushing (8). The third bushing (9) is sleeved in the first bushing (7) and rotatably connected to the first bushing (7). The head end of the shaft (2) is inserted into the third bushing (9) and has a clearance fit with the third bushing (9). The second drive unit (5) can transmit the rotational motion to the third bushing (9) to drive the sampling unit (3) to rotate.

6. The liftable and rotatable sampling device according to claim 5, characterized in that, The first drive unit (4) includes a first motor fixed on the seat body (1), and the first motor transmits rotational motion to the first bushing (7) through a belt drive assembly; the second drive unit (5) includes a second motor fixed on the seat body (1), and the second motor transmits rotational motion to the third bushing (9) through a belt drive assembly.

7. The liftable and rotatable sampling device according to claim 6, characterized in that, It also includes a third outer cylinder (91) sleeved outside the third bushing (9), the inner edge of the top of the third outer cylinder (91) extends horizontally inward and is fixedly connected to the third bushing (9), and the third outer cylinder (91) is rotatably connected to the first bushing (7) through a bearing.

8. The liftable and rotatable sampling device according to claim 5, characterized in that, The inner diameter of the second bushing (8) is greater than the outer diameter of the third bushing (9), and the shaft (2) is rotatably connected to the second bushing (8) at the lower part of the second bushing (8).

9. The liftable and rotatable sampling device according to any one of claims 2-4 and 6-8, characterized in that, It also includes at least one guide post (13), which is arranged parallel to the axis of the shaft (2). One end of the guide post (13) is fixed to the cover (6), and the other end of the guide post (13) passes through the seat body (1) and is slidably connected to the seat body (1) in the upper and lower parts.

10. The liftable and rotatable sampling device according to claim 9, characterized in that, It also includes a bracket (10), a first limit switch (11) and a second limit switch (12) fixed on the seat body (1) and arranged vertically. The bracket (10) is fixed to the sampling unit (3) and can be identified by the first limit switch (11) or the second limit switch (12).

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