A fixed source exhaust particulate matter sampling device

Abstract

The utility model discloses a fixed-source exhaust gas particulate sampling device, comprising a handle, which is hollow and a connecting pipe capable of controlled sliding is installed inside the handle, one section of the connecting pipe extends to the outside of the handle and is connected to an external sampling device, and the other end is connected to a sampling head, which can be stored inside the handle when folded, and can simultaneously perform sampling at multiple points on the same horizontal plane inside the flue when unfolded. The utility model realizes the function of performing multi-point sampling on the same measuring section through a frame made of elastic materials and a retractable branch pipe, while ensuring that the overall weight is light, which is convenient for staff to operate.

Description

Technical Field

[0001] The utility model relates to a fixed source waste gas particle sampling device, belonging to the technical field of waste particle sampling. Background Art

[0002] In order to solve the problem of time difference and error caused by sampling between multiple sampling points in the same measuring section, a Chinese patent document with publication number CN115343120A discloses a fixed-source exhaust gas particulate sampling device, which is provided with multiple sampling legs to perform multi-point sampling in the same measuring section. However, in order to be able to extend from the inside of the sampling hole into the inside of the flue for sampling, the multiple sampling legs are configured to be multi-section foldable, resulting in more parts and greatly increasing the overall weight, which is not conducive to operation by staff. In order to solve the above problems, the utility model provides a fixed-source exhaust gas particulate sampling device. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a fixed-source exhaust gas particulate sampling device, which, through a frame made of elastic material and a retractable branch pipe, realizes the function of multi-point sampling on the same measuring section while ensuring that the overall weight is light, which is convenient for staff to operate.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fixed source exhaust gas particulate sampling device, comprising a handle, which can be inserted into the interior of the flue through a sampling hole, the handle is hollow, and a connecting pipe that can be controlled to slide is installed inside the handle, one section of the connecting pipe extends to the outside of the handle and is connected to an external sampling device, and the other end is connected to a sampling head, and the external sampling device can sample from the inside of the flue through the connecting pipe and the sampling head. The sampling head can be stored inside the handle when folded, and can sample at multiple points on the same horizontal plane inside the flue at the same time when unfolded. When the sampling head is stored inside the handle, it is convenient for the staff to extend the sampling head into the interior of the flue.

[0005] Preferably, the sampling head includes a frame, the material of the frame is an elastic material, the material of the frame can be elastic rubber, a plurality of retractable branch pipes are fixedly connected to the inside of the frame, the branch pipes can be corrugated tubes, a plurality of exhaust holes are opened on the branch pipes and the frame, and the branch pipes and the frame are connected to the connecting pipe, and the branch pipes and the frame can extract samples from the inside of the flue through the exhaust holes thereon.

[0006] Preferably, a support rod for supporting the frame is provided above the frame. The setting of the support rod can enable the frame to stably maintain the unfolded state after unfolding. One end of the support rod is fixedly connected to the connecting tube, and the other end is fixedly connected to the frame. The connecting tube and the support rod are made of hard material.

[0007] Preferably, the frame is in the shape of a closed geometric figure, which enables the frame to be folded and stored better.

[0008] Preferably, the frame is in the shape of a circular ring, and frames of different sizes can be used according to the size of the flue.

[0009] Preferably, the support rod passes through the axis of the frame, so as to stably support the frame without affecting the storage of the frame.

[0010] Preferably, branch rods for assisting the support frame are symmetrically installed on the support rod. The arrangement of the branch rods can make the frame better stable after unfolding. One end of the branch rod is hinged to the frame, and the other end is slidably connected to the support rod. The branch rod is rotatably connected via a fixed shaft fixedly connected to the frame. One end of the branch rod located above the support rod is fixedly connected to a sliding shaft, which extends to the bottom of a through groove provided on the support rod and is folded to all sides.

[0011] Preferably, when the frame is in the unfolded state, the angle between the branch rod and the support rod is an acute angle, and when the frame is folded, the end of the branch rod close to the support rod slides toward the end of the support rod better.

[0012] Preferably, an empty slot for accommodating the sampling head is formed at the inner end of the handle, and the slot wall of the empty slot is outwardly expanded. The outwardly expanded configuration enables the sampling head to be better accommodated.

[0013] Preferably, a squeeze bolt is meshingly connected to the handle, and the inner end of the squeeze bolt fits with the connecting pipe. The squeeze bolt can be rotated clockwise to press against the connecting pipe.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The frame is made of elastic material, and the branch pipe is made of bellows, which can be retracted and stored in the handle and inserted into the flue through the sampling hole. After being inserted into the flue, the frame and branch pipe can be extended from the handle and unfolded under the elasticity of the frame to perform multi-point sampling;

[0016] 2. The setting of the support rod and the branch rod can not affect the folding and storage of the frame and the branch pipe, and can also maintain stability after the frame and the branch pipe are unfolded;

[0017] 3. The wall of the empty slot is outwardly expanded, so that the frame and branch pipe can be better folded and stored inside the empty slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the branch pipe of the utility model.

[0020] Figure 3 It is a cross-sectional view of the handle of the utility model.

[0021] Figure 4 It is a schematic diagram of the folded state of the frame of the utility model.

[0022] Figure 5 It is an exploded view of the branch rod and the support rod of the utility model.

[0023] Figure 6 This is a schematic diagram of the connection between the branch rod and the support rod of the utility model.

[0024] In the figure: 1, handle, 2, connecting pipe, 3, sampling head, 301, frame, 302, branch pipe, 4, support rod, 5, empty slot, 6, extrusion bolt, 7, branch rod. DETAILED DESCRIPTION

[0025] The present invention is described below with specific embodiments, but is not intended to be a limitation of the present invention.

[0026] Embodiment 1

[0027] In this embodiment, a fixed source exhaust particulate sampling device is provided, such as Figure 1 As shown, it includes a handle 1, the size of the handle 1 is smaller than the size of the sampling hole opened on the flue, the handle 1 can be inserted into the interior of the flue through the sampling hole, the handle 1 is hollow, and a connecting pipe 2 that can be controlled to slide is installed inside the handle 1, one section of the connecting pipe 2 extends to the outside of the handle 1 and is connected to an external sampling device, and the other end is connected to a sampling head 3, and an external sampling device can sample from the inside of the flue through the connecting pipe 2 and the sampling head 3. The sampling head 3 can be stored in the handle 1 when folded, and the sampling head 3 can simultaneously sample multiple points on the same horizontal plane inside the flue when unfolded. When the sampling head 3 is stored in the handle 1, it is convenient for the staff to extend the sampling head 3 into the interior of the flue, and the sampling head 3 can simultaneously sample multiple points on the same horizontal plane when unfolded, so that the sampled data is more accurate.

[0028] like Figure 2 and Figure 4As shown, the sampling head 3 includes a frame 301, the material of the frame 301 is an elastic material, the material of the frame 301 can be elastic rubber, the frame 301 is fixedly connected with a plurality of retractable branch pipes 302, the branch pipes 302 can be corrugated pipes, and the distribution pattern of the branch pipes 302 in the frame 301 is as shown in FIG. Figure 2 As shown, multiple exhaust holes are opened on the branch pipe 302 and the frame 301, and the branch pipe 302 and the frame 301 are both connected to the connecting pipe 2. The branch pipe 302 and the frame 301 can extract samples from the inside of the flue through the exhaust holes thereon, and the extracted samples can enter the external sampling equipment through the connecting pipe 2 to complete the sampling.

[0029] A support rod 4 for supporting the frame 301 is provided above the frame 301. The setting of the support rod 4 can enable the frame 301 to stably maintain the unfolded state after unfolding, so as not to affect the extraction of the sample. One end of the support rod 4 is fixedly connected to the connecting tube 2, and the other end is fixedly connected to the frame 301. The connecting tube 2 and the support rod 4 are made of hard materials, which can support the frame 301.

[0030] The shape of the frame 301 is a closed geometric figure, which enables the frame 301 to be better folded and stored, and also enables the branch pipes 302 to be better distributed. The shape of the frame 301 is preferably circular, and frames 301 of different sizes can be used according to the size of the flue, so that sampling can be better performed.

[0031] The support rod 4 passes through the axis of the frame 301 , and can stably support the frame 301 without affecting the storage of the frame 301 .

[0032] Embodiment 2

[0033] The support rod 4 is symmetrically provided with a branch rod 7 for assisting the support frame 301. The arrangement of the branch rod 7 can make the frame 301 more stable after being unfolded. One end of the branch rod 7 is hinged to the frame 301, and the other end is slidably connected to the support rod 4. The branch rod 7 is rotatably connected through a fixed shaft fixedly connected to the frame 301. One end of the branch rod 7 located above the support rod 4 is fixedly connected to a sliding shaft, which extends to the bottom of the through groove provided on the support rod 4 and is folded around (such as Figure 5 As shown in FIG. 3 ), the sliding shaft can slide back and forth inside the through slot and can also rotate inside the through slot. When the frame 301 is unfolded, the end of the branch rod 7 close to the support rod 4 will slide to the center position of the support rod 4 (as shown in FIG. 3 ). Figure 4 As shown), the support frame 301 can be stably supported. When the frame 301 is folded, the end of the branch rod 7 close to the support rod 4 will slide toward the two ends of the support rod 4, and the end close to the frame 301 will move toward the direction of the support rod 4, so that the frame 301 can be folded smoothly.

[0034] When the frame 301 is in the unfolded state, the angle between the branch rod 7 and the support rod 4 is an acute angle, and the angle A between the branch rod 7 and the support rod 4 is an acute angle (such as Figure 6 As shown), when the frame 301 is folded, the end of the branch rod 7 close to the support rod 4 can slide toward the end of the support rod 4 better, so that the frame 301 can be folded better.

[0035] like Figure 3 As shown, the inner end of the handle 1 is provided with an empty slot 5 for accommodating the sampling head 3, and the slot wall of the empty slot 5 is outwardly expanded, the end of the handle 1 inserted into the flue is the inner end, and the notch of the empty slot 5 is the outer side. The outwardly expanded setting allows the sampling head 3 to be better accommodated.

[0036] Embodiment 3

[0037] The handle 1 is meshed with an extrusion bolt 6, and the inner end of the extrusion bolt 6 fits against the connecting tube 2. By rotating the extrusion bolt 6 clockwise, the extrusion bolt 6 can be pressed against the connecting tube 2, thereby fixing the connecting tube 2, so that the sampling head 3 can be stably stored inside the handle 1, and the sampling head 3 can be stably maintained in the expanded state.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A fixed source exhaust particulate matter sampling device, characterized in that: The invention comprises a handle (1), wherein the handle (1) is hollow, and a connection pipe (2) capable of controlled sliding is installed inside the handle (1), one section of the connection pipe (2) extends to the outside of the handle (1) and is connected to an external sampling device, and the other end is connected to a sampling head (3), and the sampling head (3) can be stored inside the handle (1) when folded, and can simultaneously perform sampling at multiple points on the same horizontal plane inside the flue when the sampling head (3) is unfolded.

2. A fixed source exhaust particulate matter sampling device according to claim 1, characterized in that: The sampling head (3) comprises a frame (301), the frame (301) is made of elastic material, a plurality of retractable branch pipes (302) are fixedly connected inside the frame (301), a plurality of air extraction holes are opened on the branch pipes (302) and the frame (301), and the branch pipes (302) and the frame (301) are both in communication with the connecting pipe (2).

3. A fixed source exhaust particulate matter sampling device according to claim 2, characterized in that: A support rod (4) for supporting the frame (301) is provided above the frame (301); one end of the support rod (4) is fixedly connected to the connecting pipe (2), and the other end of the support rod (4) is fixedly connected to the frame (301).

4. A fixed source exhaust particulate matter sampling device according to claim 3, characterized in that: The frame (301) is in the shape of a closed geometric figure.

5. A fixed source exhaust particulate matter sampling device according to claim 4, characterized in that: The frame (301) is in the shape of a ring.

6. A fixed source exhaust particulate matter sampling device according to claim 5, characterized in that: The support rod (4) passes through the axis of the frame (301).

7. A fixed source exhaust particulate matter sampling device according to claim 6, characterized in that: A branch rod (7) for assisting the support frame (301) is symmetrically mounted on the support rod (4); one end of the branch rod (7) is hinged to the frame (301), and the other end is slidably connected to the support rod (4).

8. A fixed source exhaust particulate matter sampling device according to claim 7, characterized in that: When the frame (301) is in an unfolded state, the angle between the branch rod (7) and the support rod (4) is an acute angle.

9. A fixed source exhaust particulate matter sampling device according to claim 1, characterized in that: The inner end of the handle (1) is provided with a hollow groove (5) for accommodating the sampling head (3), and the groove wall of the hollow groove (5) is outwardly expanded.

10. The fixed source exhaust particulate matter sampling device according to claim 1, characterized in that: The handle (1) is meshedly connected with a squeeze bolt (6), and the inner end of the squeeze bolt (6) and the connecting pipe (2) are in contact with each other.

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