A backpack dust sampler that avoids bending of dust delivery pipes

Abstract

This utility model discloses a backpack dust sampler that avoids bending of the dust delivery pipe. It includes a sampling device body, a connecting pipe fixedly connected to the lower right side of the sampling device body, a connector pipe inserted into the end of the connecting pipe, a threaded post fixedly connected to the end of the connector pipe away from the connecting pipe, a connector clamping sleeve fitted on the outside of the connector pipe, several limiting balls provided on the outside of the connector pipe at the position of the clamping sleeve, a limiting groove adapted to the limiting balls on the outer surface of the connecting pipe, a connecting sleeve threadedly connected to the outside of the threaded post, a delivery hose fixedly connected to the end of the connecting sleeve, an anti-bending component provided on the outside of the delivery hose, and a connector fixedly connected to the end of the delivery hose. The advantages of this solution are: preventing bending of the delivery hose, ensuring that the dust flow rate does not change during sampling, and reducing measurement errors caused by flow rate changes.

Description

Technical Field

[0001] This utility model relates to the field of dust sampler technology, specifically to a backpack dust sampler that avoids bending of the dust gas delivery pipe. Background Technology

[0002] A dust sampler is a portable device used to collect dust samples from dusty air. It is widely used in health monitoring and evaluation in departments such as disease prevention, environmental monitoring, labor protection, safety supervision, military, scientific research and teaching, metallurgy, petrochemicals, railways, and building materials. It is specifically used to measure dust in the air in the workplace of production teams.

[0003] Dust samplers typically require a dust delivery pipe to transport the collected dust into the sampler. However, when the sampling personnel bend over, the dust delivery pipe is prone to bending, which affects the amount of dust input and further impacts the sampling accuracy of the sampler itself. The delivery pipe at the connection point with the dust sampling host is particularly prone to bending problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, a backpack dust sampler is provided that avoids bending of the dust delivery pipe. This solves the problem that current dust samplers usually require a dust delivery pipe to transport the collected dust into the sampler, but the dust delivery pipe is prone to bending when the sampling personnel bend over, which affects the amount of dust input and thus further affects the sampling accuracy of the sampler itself.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a backpack dust sampler that avoids bending of the dust gas delivery pipe, comprising a sampling device body, a connecting pipe fixedly connected to the lower right side of the sampling device body, a connector pipe inserted into the end of the connecting pipe, a threaded post fixedly connected to the end of the connector pipe away from the connecting pipe, a connector clamping sleeve fitted on the outside of the connector pipe, a plurality of limiting balls provided on the outside of the connector pipe at the position of the clamping sleeve, a limiting groove adapted to the limiting balls being opened on the outer surface of the connecting pipe, a connecting sleeve threadedly connected to the outside of the threaded post, a gas delivery hose fixedly connected to the end of the connecting sleeve, an anti-bending component provided on the outside of the gas delivery hose, and a connector fixedly connected to the end of the gas delivery hose.

[0006] Preferably, the anti-bending component includes a sleeve, and a plurality of first fixing plates and second fixing plates are fixedly connected inside the sleeve. The sleeve is fixedly connected to the gas delivery hose through the first fixing plates and second fixing plates; the sleeve is a hose.

[0007] Preferably, a first movable ball is rotatably connected inside the first fixed plate, a second movable ball is rotatably connected inside the second fixed plate, an anti-bend rod is fixedly connected to the outside of the first movable ball, and a sliding sleeve is fixedly connected to the outside of the second movable ball.

[0008] Preferably, the end of the anti-bend rod extends into the interior of the sliding sleeve and is slidably connected to the sliding sleeve, and a return spring is fixedly connected to the right side of the anti-bend rod inside the sliding sleeve.

[0009] Preferably, the upper ends of both the left and right sides of the sampling device body are fixedly connected with connecting ears, and hooks are sleeved inside the two connecting ears, with a strap hanging between the two hooks.

[0010] Preferably, a compression spring is sleeved between the connector tube and the clamping sleeve, with one end of the compression spring fixedly connected to the clamping sleeve and the other end of the compression spring fixedly connected to the connector tube.

[0011] Preferably, a placement slot is provided on the top of the sampling device body, and a handle is rotatably connected inside the placement slot.

[0012] Compared with the prior art, the advantages of this utility model are as follows: By setting up an anti-bending component, the cooperation between the anti-bending rod and the sliding sleeve has a limiting function, preventing excessive bending of the gas delivery hose. This prevents the gas delivery hose from bending, ensuring that the dust flow rate does not change during sampling, reducing measurement errors caused by flow rate changes. The stability of the flow rate reduces the variation between sampling results at different times, improving the comparability and consistency of the data. Avoiding bending reduces the accumulation and blockage in the pipeline, thereby reducing the risk of sample contamination. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the anti-bending component in this utility model;

[0015] Figure 3 This is a cross-sectional view of the connector pipe in this utility model;

[0016] Figure 4 for Figure 2 A magnified view of a section at point A in the middle;

[0017] Figure 5 for Figure 1 A magnified view of a section at point B in the middle.

[0018] The following are the labels in the diagram: 1. Sampling device body; 2. Placement slot; 3. Handle; 4. Connecting ear; 5. Hook; 6. Hanging strap; 7. Connecting pipe; 8. Connecting pipe; 9. Threaded post; 10. Compression spring; 11. Clamping sleeve; 12. Limiting ball; 13. Limiting groove; 14. Connecting sleeve; 15. Gas delivery hose; 16. Connector; 17. Anti-bending assembly; 1701. Sleeve; 1702. First fixing plate; 1703. First movable ball; 1704. Anti-bending rod; 1705. Sliding sleeve; 1706. Return spring; 1707. Second fixing plate; 1708. Second movable ball. Detailed Implementation

[0019] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0020] like Figure 1-5 As shown, this utility model provides a backpack dust sampler that avoids bending of the dust conveying pipe. It includes a sampling device body 1, a connecting pipe 7 fixedly connected to the lower right side of the sampling device body 1, a connector pipe 8 inserted into the end of the connecting pipe 7, and a threaded post 9 fixedly connected to the end of the connector pipe 8 away from the connecting pipe 7; a connector clamping sleeve 11 is sleeved on the outside of the connector pipe 8, and a plurality of limiting balls 12 are provided on the outside of the connector pipe 8 at the position of the clamping sleeve 11; a limiting groove 13 adapted to the limiting balls 12 is opened on the outer surface of the connecting pipe 7. The aforementioned design of the limiting ball 12 and limiting groove 13 ensures a stable connection between the connecting pipe 7 and the connector pipe 8, effectively preventing air leakage or detachment due to unstable connection. At the same time, the threaded column 9 is threadedly connected to the outer side of the connecting sleeve 14, and the end of the connecting sleeve 14 is fixedly connected to the air supply hose 15. The connecting sleeve 14 is fixed to the threaded column 9 by the threaded connection. This connection method is simple, reliable, easy to operate, and can withstand a large tensile force, ensuring that the air supply hose 15 will not fall off due to external force during use. The outer side of the air supply hose 15 is provided with an anti-bending component 17, and the end of the air supply hose 15 is fixedly connected to a connector 16.

[0021] In use, first, move the clamping sleeve 11 towards the side closest to the threaded post 9. Then, insert the connecting pipe 7 into the connector pipe 8 to loosen the clamping sleeve 11. The compression spring 10 pushes the clamping sleeve 11 to reset, causing the limiting ball 12 to engage in the limiting groove 13 opened on the outside of the connecting pipe 7. Next, screw the connecting sleeve 14 onto the threaded post 9 to complete the installation of the gas delivery hose 15. When the sampling personnel bend over, the gas delivery hose 15 deforms. The first fixing plate 1702 and the second fixing plate 1707 squeeze inward or stretch outward the anti-bend rod 1704 and the sliding sleeve 1705. Since the cooperation between the anti-bend rod 1704 and the sliding sleeve 1705 has a limiting function, the gas delivery hose 15 will not be excessively bent, so it will not affect the flow rate during sampling.

[0022] Furthermore, the anti-bending assembly 17 includes a sleeve 1701. Several sets of first fixing plates 1702 and second fixing plates 1707 are fixedly connected inside the sleeve 1701. The sleeve 1701 is fixedly connected to the gas delivery hose 15 via the first fixing plates 1702 and second fixing plates 1707. The sleeve 1701 is made of a flexible, bendable material (i.e., the sleeve 1701 is a hose), which well accommodates the deformation of the gas delivery hose 15 during sampling. While it is permissible for the hose to bend slightly due to the user's bending or stooping posture, the internal design of the anti-bending assembly 17, including the return spring, prevents the sleeve 1701 from undergoing significant large-angle bends, avoiding "dead bends" exceeding 90 degrees in the channel. This ensures smooth internal flow and prevents a sudden decrease in sampling flow caused by "dead bends."

[0023] Furthermore, a first movable ball 1703 is rotatably connected inside the first fixed plate 1702, and a second movable ball 1708 is rotatably connected inside the second fixed plate 1707. An anti-bend rod 1704 is fixedly connected to the outside of the first movable ball 1703, and a sliding sleeve 1705 is fixedly connected to the outside of the second movable ball 1708. The design of the first movable ball 1703 and the second movable ball 1708 allows the anti-bend rod 1704 and the sliding sleeve 1705 to rotate and slide flexibly, thereby adapting to the deformation of the gas delivery hose 15 in different directions.

[0024] Furthermore, the end of the anti-bend rod 1704 extends into the interior of the sliding sleeve 1705 and is slidably connected to the sliding sleeve 1705. A return spring 1706 is fixedly connected inside the sliding sleeve 1705 to the right side of the anti-bend rod 1704. The addition of the return spring 1706 allows the anti-bend rod 1704 and the sliding sleeve 1705 to quickly return to their original shape after deformation, ensuring the stability and service life of the gas delivery hose 15.

[0025] Furthermore, the upper ends of both sides of the sampling device body 1 are fixedly connected with connecting ears 4, and hooks 5 are sleeved inside the two connecting ears 4. A strap 6 is hung between the two hooks 5. The sampling device body 1 is hung on the body of the sampling personnel through the connecting ears 4 and hooks 5. This design is not only easy to carry and operate, but also effectively reduces the burden on the sampling personnel.

[0026] Furthermore, a compression spring 10 is fitted between the connector tube 8 and the clamping sleeve 11. One end of the compression spring 10 is fixedly connected to the clamping sleeve 11, and the other end of the compression spring 10 is fixedly connected to the connector tube 8. The addition of the compression spring 10 enhances the tightness between the connector tube 8 and the clamping sleeve 11, further improving the stability of the connection.

[0027] Furthermore, a placement slot 2 is provided on the top of the sampling device body 1, and a handle 3 is rotatably connected inside the placement slot 2. The handle 3 makes it easy for sampling personnel to quickly lift or move the sampling device when needed, which improves work efficiency and portability.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A backpack dust sampler that avoids bending of the dust delivery pipe, characterized in that: The device includes a sampling device body (1), a connecting pipe (7) is fixedly connected to the lower right side of the sampling device body (1), a connector pipe (8) is inserted into the end of the connecting pipe (7), a threaded column (9) is fixedly connected to the end of the connector pipe (8) away from the connecting pipe (7), a connector clamping sleeve (11) is sleeved on the outside of the connector pipe (8), a number of limiting balls (12) are provided on the outside of the connector pipe (8) at the position of the clamping sleeve (11), a limiting groove (13) adapted to the limiting balls (12) is opened on the outer surface of the connecting pipe (7), a connecting sleeve (14) is threadedly connected to the outside of the threaded column (9), a gas delivery hose (15) is fixedly connected to the end of the connecting sleeve (14), an anti-bending component (17) is provided on the outside of the gas delivery hose (15), and a connector (16) is fixedly connected to the end of the gas delivery hose (15).

2. The backpack dust sampler for avoiding bending of dust gas delivery pipes according to claim 1, characterized in that: The anti-bending assembly (17) includes a sleeve (1701), and several sets of first fixing plates (1702) and second fixing plates (1707) are fixedly connected inside the sleeve (1701). The sleeve (1701) is fixedly connected to the gas delivery hose (15) through the first fixing plates (1702) and the second fixing plates (1707). The sleeve (1701) is a hose.

3. A backpack dust sampler for avoiding bending of dust gas delivery pipes according to claim 2, characterized in that: The first fixed plate (1702) is rotatably connected to a first movable ball (1703), the second fixed plate (1707) is rotatably connected to a second movable ball (1708), the first movable ball (1703) is fixedly connected to an anti-bend rod (1704) on the outside, and the second movable ball (1708) is fixedly connected to a sliding sleeve (1705) on the outside.

4. A backpack dust sampler for avoiding bending of dust gas delivery pipes according to claim 3, characterized in that: The end of the anti-bend rod (1704) extends into the interior of the sliding sleeve (1705) and is slidably connected to the sliding sleeve (1705). A return spring (1706) is fixedly connected inside the sliding sleeve (1705) to the right side of the anti-bend rod (1704).

5. A backpack dust sampler for avoiding bending of dust gas delivery pipes according to claim 1, characterized in that: The upper ends of the left and right sides of the sampling device body (1) are fixedly connected with connecting ears (4), and hooks (5) are sleeved inside the two connecting ears (4), and a strap (6) is hung between the two hooks (5).

6. A backpack dust sampler for avoiding bending of dust gas delivery pipes according to claim 1, characterized in that: A compression spring (10) is sleeved between the connector tube (8) and the clamping sleeve (11). One end of the compression spring (10) is fixedly connected to the clamping sleeve (11), and the other end of the compression spring (10) is fixedly connected to the connector tube (8).

7. A backpack dust sampler for avoiding bending of dust gas delivery pipes according to claim 1, characterized in that: The sampling device body (1) has a placement slot (2) on top, and a handle (3) is rotatably connected inside the placement slot (2).

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