Dust concentration measuring instrument with good sealing effect

Abstract

The utility model discloses a dust concentration measuring instrument with good sealing effect in the technical field of dust concentration measuring instruments, which comprises a dust concentration measuring instrument body, one side of the body is provided with a connecting frame, one side of the connecting frame is provided with a placing groove, one side of the connecting frame is provided with a dust suction pipe, and the dust suction pipe is arranged on the inner side of the placing groove. Dust in air enters the body through the dust suction pipe and the dust guide pipe to be subjected to dust concentration detection, the connecting frame and the dust suction pipe can be sealed through the sealing piece, it is avoided that air flow affects the detection accuracy of the body, and the problem that a gap exists between the dust suction head and equipment is solved. The problems that air flows into and out of the equipment due to the fact that the dust suction head is prone to loosening or damage, the dust suction head is inconvenient to disassemble for maintenance or replacement, and the precision and practicability of air dust detection of the equipment are affected are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of dust concentration measuring instruments, specifically a dust concentration measuring instrument with good sealing effect. Background Technology

[0002] Dust concentration detectors mainly employ online dust concentration measurement methods such as capacitance method, beta-ray method, light scattering method, light absorption method, triboelectric method, ultrasonic method, and microwave method. Dust measuring devices are typically used in environments with high dust levels. Currently, the equipment usually directly embeds the dust suction head and the dust suction head connecting rod, which creates gaps that allow air to flow, affecting the accuracy of dust concentration detection.

[0003] Existing equipment and dust collection heads are usually directly installed using bolts, resulting in gaps between the dust collection head and the equipment. This allows air to flow in and out of the equipment, and the dust collection head is prone to loosening or damage, making it inconvenient to disassemble for maintenance or replacement. This affects the accuracy and practicality of the equipment in detecting airborne dust. Therefore, those skilled in the art have provided a dust concentration measuring instrument with good sealing performance to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a dust concentration measuring instrument with good sealing performance to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dust concentration measuring instrument with good sealing effect, comprising a body of the dust concentration measuring instrument, a connecting frame installed on one side of the body, a placement groove opened on one side of the connecting frame, and a dust suction pipe installed on one side of the connecting frame and inside the placement groove;

[0006] A dust guide pipe is installed at the other end of the connecting frame. Four mounting parts arranged in a circle are installed between the connecting frame and the dust suction pipe. A sealing element is installed between the connecting frame and the dust suction pipe. The connecting frame and the main body are installed and fixed by multiple bolts.

[0007] Preferably, the mounting component includes four movable cavities arranged circumferentially on the inner side of the connecting frame. A screw is installed inside the movable cavity. A connecting plate is installed outside the screw and inside the movable cavity. Locking blocks are installed at the bottom of the connecting plate and near both ends. The outer wall of the vacuum tube has four sets of locking grooves arranged circumferentially. Each set of locking grooves includes two. The screw passes through the connecting plate and is screwed to it.

[0008] Preferably, the sealing element includes multiple movable grooves arranged circumferentially on both sides of the placement groove, a pusher is connected to the inner side of the movable cavity, a pusher block is connected to one side of the pusher, a sealing ring is fitted on the outer side of the multiple pushers, and sealing grooves are respectively opened on the inner and outer sides of the dust suction pipe near the end, and the pusher block is slidably connected to the movable groove.

[0009] Preferably, a guide plate is installed on the inner side of the suction pipe near its end, and one side of the guide plate is attached to one end of the suction pipe.

[0010] Preferably, a guide block is connected to the other side of the connecting plate, and a guide groove is provided on the other side of the movable cavity, with the guide block and the guide groove being slidably connected.

[0011] Preferably, the guide plate has two circumferentially arranged sealing rings connected to one side, and the dust guide tube has an embedded groove at one end. The two sealing rings have different diameters.

[0012] Preferably, an air guide plate is embedded inside the dust guide tube, and the air guide plate is spiral-shaped.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, a connecting frame, a placement groove, a suction pipe, and a dust guide pipe are provided. The connecting frame is tightly installed and fixed to the main body using bolts. The suction pipe is inserted into the connecting frame. Dust in the air enters the main body through the suction pipe and the dust guide pipe for dust concentration detection. The installation parts facilitate the disassembly and assembly of the suction pipe for maintenance or replacement. The sealing parts seal the connection frame and the suction pipe, preventing gaps between the suction pipe and the main body from causing airflow and avoiding airflow affecting the accuracy of the main body's detection.

[0015] 2. In this utility model, by setting a screw, a connecting plate, a locking block, and a locking groove, the screw can rotate inside the movable cavity. The screw can drive the connecting plate to slide up and down inside the movable cavity, so that the two locking blocks at the bottom of the connecting plate are embedded in the locking groove, which makes it easy for operators to disassemble and install the vacuum pipe for removal, maintenance, or replacement.

[0016] 3. In this utility model, by setting a pusher, a pusher block, a sealing ring, and a guide plate, the pusher inside the movable groove can squeeze and push the pusher block, thereby enabling multiple pushers to squeeze and push the sealing ring, so that the two sealing rings are respectively fitted on both sides of the dust suction pipe. The guide plate is inclined and spliced ​​and fitted to one end of the dust suction pipe, improving the sealing between the dust suction pipe and the connecting frame, preventing air from flowing through gaps and affecting the accuracy of the equipment in detecting air dust concentration. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a left-side sectional perspective view of the overall structure of this utility model;

[0019] Figure 3 The overall structure of this utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a cross-sectional schematic diagram of the connecting frame, placement groove, suction pipe, movable cavity, locking groove, sealing groove, guide plate, sealing ring and embedding groove in the overall structure of this utility model;

[0021] Figure 5 This is a cross-sectional view of the suction pipe, locking groove, sealing groove, guide plate, and sealing ring in the overall structure of this utility model.

[0022] In the diagram: 1. Main body; 2. Connecting frame; 3. Placement slot; 4. Suction pipe; 5. Dust guide pipe; 6. Movable chamber; 7. Screw; 8. Connecting plate; 9. Locking block; 10. Locking groove; 11. Movable slot; 12. Pushing component; 13. Pushing block; 14. Sealing ring; 15. Sealing groove; 16. Guide plate; 17. Guide block; 18. Guide groove; 19. Sealing ring; 20. Embedded groove; 21. Air guide plate. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-5 In this embodiment of the present invention, a dust concentration measuring instrument with good sealing effect includes a body 1 of the dust concentration measuring instrument. A connecting frame 2 is installed on one side of the body 1. A placement groove 3 is opened on one side of the connecting frame 2. A dust suction pipe 4 is installed on one side of the connecting frame 2 and inside the placement groove 3. A dust guide pipe 5 is installed at the other end of the connecting frame 2. Four mounting parts arranged in a circle are installed between the connecting frame 2 and the dust suction pipe 4. An air guide plate 21 is embedded inside the dust guide pipe 5. The air guide plate 21 is spiral. A sealing element is installed between the connecting frame 2 and the dust suction pipe 4. The connecting frame 2 and the body 1 are installed and fixed by multiple bolts.

[0025] In use, the connecting frame 2 is tightly installed and fixed to the main body 1 using bolts. The suction pipe 4 is inserted into the connecting frame 2. Dust in the air enters the main body 1 through the suction pipe 4 and the dust guide pipe 5 for dust concentration detection. The air guide plate 21 on the inner side of the dust guide pipe 5 can guide the air and accelerate the air flow rate. The mounting parts can be used to facilitate the disassembly and assembly of the suction pipe 4 for maintenance or replacement. The sealing parts can be used to seal the connection frame 2 and the suction pipe 4 to prevent air from flowing due to gaps between the suction pipe 4 and the main body 1, thus avoiding the air flow affecting the accuracy of the detection performed by the main body 1.

[0026] In one embodiment, the mounting component includes four movable cavities 6 arranged circumferentially inside the connecting frame 2. A screw 7 is installed inside the movable cavity 6. A connecting plate 8 is installed outside the screw 7 and inside the movable cavity 6. Locking blocks 9 are installed at the bottom of the connecting plate 8 and near both ends. Four sets of locking grooves 10 are arranged circumferentially on the outer wall of the suction pipe 4. A guide block 17 is connected to the other side of the connecting plate 8. A guide groove 18 is opened on the other side of the movable cavity 6. The guide block 17 is slidably connected to the guide groove 18. Each set of locking grooves 10 includes two. The screw 7 passes through the connecting plate 8 and is screwed to it.

[0027] The screw 7 can rotate inside the movable cavity 6, and the screw 7 can drive the connecting plate 8 to slide up and down inside the movable cavity 6. The guide block 17 at one end of the connecting plate 8 can slide in the guide groove 18 to prevent the connecting plate 8 from shifting. This allows the two locking blocks 9 at the bottom of the connecting plate 8 to be embedded in the locking groove 10, which makes it easy for operators to disassemble and install the vacuum pipe 4 for removal, maintenance or replacement.

[0028] Furthermore, the sealing element includes multiple movable grooves 11 arranged circumferentially on both sides of the placement groove 3. A pusher 12 is connected to the inner side of the movable cavity 6. A pusher block 13 is connected to one side of the pusher 12. Sealing rings 14 are fitted on the outer sides of the multiple pushers 13. Sealing grooves 15 are opened on the inner and outer sides of the dust suction pipe 4 near the end. A guide plate 16 is installed on the inner side of the dust suction pipe 4 near the end. Two sealing rings 19 arranged circumferentially are connected to one side of the guide plate 16. An embedding groove 20 is opened at one end of the dust guide pipe 5. The two sealing rings 19 have different diameters. One side of the guide plate 16 is in contact with one end of the dust guide pipe 5. The pusher block 13 is slidably connected to the movable groove 11.

[0029] In one embodiment, specifically, the pusher 12 inside the movable groove 11 can squeeze and push the pusher block 13, thereby enabling multiple pushers 13 to squeeze and push the sealing ring 14, so that the two sealing rings 14 are respectively fitted on both sides of the suction pipe 4. The guide plate 16 is inclined and spliced ​​and fitted to one end of the dust guide pipe 5. The two sealing rings 19 on one side of the guide plate 16 enter the embedded groove 20 and fit with the dust guide pipe 5, increasing the contact area between the suction pipe 4 and the dust guide pipe 5, and improving the sealing between the suction pipe 4 and the connecting frame 2, preventing air from flowing through gaps and affecting the accuracy of the equipment in detecting air dust concentration.

[0030] The working principle of this utility model:

[0031] First, insert the suction pipe 4 into the connecting frame 2. Then, rotate the screw 7 to make the connecting plate 8 slide downward in the movable cavity 6. At the same time, the guide block 17 at one end of the connecting plate 8 slides in the guide groove 18. Then, the two locking blocks 9 at the bottom of the connecting plate 8 are embedded in the locking groove 10 to lock and fix the suction pipe 4. At this time, the pusher 12 inside the movable groove 11 squeezes and pushes the pusher block 13. Then, multiple pushers 13 squeeze and push the sealing ring 14. At this time, the two sealing rings 14 are respectively fitted on both sides of the suction pipe 4 for sealing. At the same time, the guide plate 16 is spliced ​​and attached to one end of the dust guide pipe 5. At the same time, the two sealing rings 19 on one side of the guide plate 16 enter the embedding groove 20 and are attached to the dust guide pipe 5, increasing the contact area between the suction pipe 4 and the dust guide pipe 5. Then, the air enters the body 1 through the suction pipe 4 and the dust guide pipe 5 in the connecting frame 2 for dust concentration detection.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dust concentration measuring instrument with good sealing effect, comprising the main body (1) of the dust concentration measuring instrument, characterized in that: A connecting frame (2) is installed on one side of the main body (1), a placement slot (3) is opened on one side of the connecting frame (2), and a vacuum pipe (4) is installed on one side of the connecting frame (2) and inside the placement slot (3). The other end of the connecting frame (2) is equipped with a dust guide pipe (5), and four mounting parts arranged in a circle are installed between the connecting frame (2) and the dust suction pipe (4). A sealing element is installed between the connecting frame (2) and the dust suction pipe (4). The connecting frame (2) and the body (1) are fixed together by multiple bolts.

2. The dust concentration measuring instrument with good sealing effect according to claim 1, characterized in that: The mounting component includes four movable cavities (6) arranged circumferentially inside the connecting frame (2). A screw (7) is installed inside the movable cavity (6). A connecting plate (8) is installed outside the screw (7) and inside the movable cavity (6). Locking blocks (9) are installed at the bottom of the connecting plate (8) and near both ends. The outer wall of the suction pipe (4) is provided with four sets of locking grooves (10) arranged circumferentially. Each set of locking grooves (10) includes two. The screw (7) passes through the connecting plate (8) and is screwed to it.

3. The dust concentration measuring instrument with good sealing effect according to claim 2, characterized in that: The sealing element includes multiple movable grooves (11) arranged circumferentially on both sides of the placement groove (3). A pusher (12) is connected to the inner side of the movable cavity (6). A pusher block (13) is connected to one side of the pusher (12). A sealing ring (14) is fitted on the outer side of the multiple pushers (13). Sealing grooves (15) are opened on both the inner and outer sides of the suction pipe (4) near the end. The pusher block (13) is slidably connected to the movable groove (11).

4. The dust concentration measuring instrument with good sealing effect according to claim 2, characterized in that: A guide plate (16) is installed on the inner side of the suction pipe (4) and near the end, and one side of the guide plate (16) is attached to one end of the dust guide pipe (5).

5. A dust concentration measuring instrument with good sealing effect according to claim 2, characterized in that: The connecting plate (8) is connected to a guide block (17) on the other side, and the movable cavity (6) is provided with a guide groove (18) on the other side. The guide block (17) and the guide groove (18) are slidably connected.

6. The dust concentration measuring instrument with good sealing effect according to claim 4, characterized in that: The guide plate (16) has two circumferentially arranged sealing rings (19) connected to one side, and the dust guide tube (5) has an embedded groove (20) at one end. The two sealing rings (19) have different diameters.

7. A dust concentration measuring instrument with good sealing effect according to claim 2, characterized in that: The dust guide tube (5) is fitted with an air guide plate (21) on its inner side, and the air guide plate (21) is spiral-shaped.

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