A smoke particle detection device

Abstract

The invention discloses a smoke particle detection device, which relates to the technical field of smoke particle detection, including a flue, a connection seat fixedly connected to one side of the flue, a C-shaped groove provided inside the connection seat, the C-shaped groove being connected to the flue, and a shielding mechanism and a mounting mechanism. The invention does not require sampling, sample preparation, and transportation processes, and can directly perform detection operations by changing the direction of flue gas flow, which is more convenient to use; by setting a shielding mechanism, the baffle can be rotated to a horizontal state, and the inner cavity of the flue is shielded, and the flue is passed through the C-shaped groove, and the particle concentration detector performs a detection operation on the smoke particles. After the detection is completed, the rotating block drives the baffle to rotate to shield the C-shaped groove; when the C-shaped groove is closed, the horizontal plate is displaced, the ventilation groove contacts the vertical groove, and the smoke in the C-shaped groove is discharged through the ventilation groove, which can prevent the particle concentration detector from being exposed to the flue gas for a long time, resulting in a low service life of the particle concentration detector.

Description

Technical Field

[0001] The invention relates to the technical field of smoke particle detection, and in particular to a smoke particle detection device. Background Art

[0002] The energy required in industrial production mainly comes from the energy released by the combustion of fuel, but the flue gas particles generated by the combustion of fuel will have a serious impact on the atmospheric environment. Therefore, it is necessary to detect flue gas particles in industrial waste gas and accurately grasp the composition and content of large particles in the flue gas in order to filter and clean them in a targeted manner. However, when detecting industrial waste gas, most of the detection devices are installed in the flue for detection. The detection device is exposed to the waste gas for a long time, and is subject to acid and alkali corrosion and particle impact wear, resulting in a short service life of the detection device. In some systems, the flue gas in the flue is sucked into the sample preparation device through a suction device, and then transferred to the detection device for detection after sample preparation. This method is more complicated to operate and the detection results have greater errors.

[0003] In order to facilitate detection and prevent the detection device from being exposed to exhaust gas for a long time, a flue gas particulate matter detection device is provided. Summary of the invention

[0004] The object of the present invention is to provide a smoke particle detection device in order to facilitate detection and prevent the detection device from being exposed to exhaust gas for a long time.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a flue gas particle detection device, comprising a flue, a connecting seat fixedly connected to one side of the flue, a C-shaped groove provided inside the connecting seat, the C-shaped groove being connected to the flue, a particle concentration detector being installed in the inner cavity of the C-shaped groove, the C-shaped groove being opened by a shielding mechanism, the particle concentration detector being installed by an installation mechanism, the shielding mechanism comprising a rotating block, the rotating block being rotatably connected to a side of the outer wall of the flue away from the connecting seat, one end of the rotating block being fixedly connected to a connecting shaft, one end of the connecting shaft being fixedly connected to a first spur gear, the interior of the connecting seat being symmetrically rotatably connected to a second spur gear located on the upper and lower sides of the outer wall of the first spur gear, one end of the second spur gear being fixedly connected to a threaded rod, the outer wall of the threaded rod being connected to a slider, the slider being slidably connected to the interior of the connecting seat and extending to the inner cavity of the flue.

[0006] As a further solution of the present invention: the shielding mechanism also includes a baffle, which is rotatably connected to the junction of the inner cavity of the flue and the C-shaped groove, the outer wall of the baffle is fixedly connected to a third spur gear, the sliding block is in contact with the third spur gear, and the outer wall of the rotating block is provided with a fixed groove. When contracted, the outer wall of the flue is located above the rotating block and is fixedly connected to a fixed seat, the fixed seat is internally slidably connected to a fixed block extending to the bottom of the fixed seat, a first spring is connected between the fixed block and the fixed seat, the connecting seat is internally slidably connected to a horizontal plate extending to the inner cavity of the flue, a reset spring is connected between the horizontal plate and the connecting seat, ventilation grooves are provided at the top and bottom ends of the connecting seat, and a vertical groove is provided on the outer wall of the horizontal plate.

[0007] As a further solution of the present invention: the mounting mechanism includes a mounting groove, the mounting groove is opened on the outer wall of the connecting seat, a clamping groove is opened at the bottom end of the mounting groove, a mounting plate is slidably connected to the inner wall of the mounting groove, an insertion rod is fixedly connected to the outer wall of the mounting plate, a slot for inserting the insertion rod is opened on the inner wall of the C-shaped groove, a clamping block extending to the bottom of the mounting plate is slidably connected to the inside of the mounting plate, and a second spring is connected between the clamping block and the mounting plate.

[0008] As a further scheme of the present invention: the mounting mechanism also includes a movable frame, which is slidably connected to the interior of the mounting plate, the blocking block contacts the inner cavity of the movable frame, the outer wall of the mounting plate is rotatably connected to a rotating column, one end of the rotating column is fixedly connected to a cam-shaped extrusion block, the extrusion block is located in the inner cavity of the movable frame, a positioning groove is provided on the outer wall of the first spur gear, the interior of the connecting seat is located on one side of the first spur gear and is slidably connected with a positioning block, a third spring is connected between the positioning block and the connecting seat, the interior of the connecting seat is located at the bottom end of the positioning block and is rotatably connected with a fourth spur gear, the interior of the connecting seat is located at the bottom end of the fourth spur gear and is slidably connected with a pushing block, and the pushing block extends to the inner cavity of the slot.

[0009] As a further solution of the present invention: the first spur gear is meshed with the second spur gear, and a threaded hole is provided on the outer wall of the sliding block, and the threaded hole matches the threaded rod.

[0010] As a further solution of the present invention: a tooth groove is formed on the outer wall of the sliding block, and the tooth groove is meshed with the third spur gear.

[0011] As a further solution of the present invention: the inner wall of the fixing groove fits with the outer wall of the fixing block, and the fixing block is L-shaped.

[0012] As a further solution of the present invention: the inner wall of the installation groove fits with the outer wall of the installation plate, and the outer wall of the insertion rod fits with the inner wall of the slot.

[0013] As a further solution of the present invention: the inner wall of the card slot is in contact with the bottom end of the card block.

[0014] As a further solution of the present invention: an outer wall of one end of the positioning block is in contact with an inner wall of the positioning groove, and outer walls of the positioning block and the pushing block are provided with gear teeth, which mesh with the fourth spur gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention does not require sampling, sample preparation, and transportation processes, and can directly perform detection operations by changing the direction of flue gas flow, which is more convenient to use. By setting a shielding mechanism, the rotating block drives the baffle to rotate, and the baffle rotates horizontally to shield the inner cavity of the flue. At the same time, the C-shaped groove is opened, and the flue passes through the C-shaped groove. The particle concentration detector detects the flue gas particles. After the detection is completed, the rotating block drives the baffle to rotate to shield the C-shaped groove; when the C-shaped groove is closed, the horizontal plate is displaced, and the ventilation groove contacts the vertical groove. The smoke in the C-shaped groove is discharged through the ventilation groove, which can prevent the particle concentration detector from being exposed to the flue gas for a long time, resulting in a short service life of the particle concentration detector.

[0017] 2. By setting up the installation mechanism, the installation plate is connected into the installation slot. At this time, the insertion rod is inserted into the slot until the card block moves into the card slot under the elastic force of the second spring to fix the installation plate; when the particle concentration detector is dismantled, the rotating column is rotated to drive the card block to move, and the card block moves out of the card slot, canceling the fixation of the installation plate, and the installation plate is taken out of the installation slot, and the particle concentration detector is disassembled and repaired; this design facilitates the rapid installation and disassembly of the particle concentration detector, and at the same time prevents the baffle from opening when the particle concentration detector is replaced, causing smoke to be discharged through the installation slot and affecting the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the flue of the present invention;

[0020] Figure 3 It is a schematic diagram of the internal structure of the fixing base of the present invention;

[0021] Figure 4 It is a schematic diagram of the installation of the mounting plate of the present invention;

[0022] Figure 5 For the present invention Figure 4 The enlarged view of point A in the middle;

[0023] Figure 6 It is a schematic diagram of the internal structure of the mounting plate of the present invention;

[0024] Figure 7 It is a structural schematic diagram of the activity frame of the present invention;

[0025] Figure 8 It is a structural schematic diagram of the positioning groove of the present invention.

[0026] In the figure: 1, flue; 2, connecting seat; 3, C-shaped groove; 4, particle concentration detector; 5, shielding mechanism; 501, rotating block; 502, connecting shaft; 503, first spur gear; 504, second spur gear; 505, threaded rod; 506, slider; 507, baffle; 508, third spur gear; 509, fixed groove; 510, fixed seat; 511, fixed block; 512, first spring; 513, horizontal plate; 51 4. reset spring; 515. ventilation groove; 516. vertical groove; 6. mounting mechanism; 601. mounting groove; 602. clamping groove; 603. mounting plate; 604. insertion rod; 605. slot; 606. clamping block; 607. second spring; 608. movable frame; 609. extrusion block; 610. rotating column; 611. positioning groove; 612. positioning block; 613. third spring; 614. fourth spur gear; 615. pushing block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0029] See also Figures 1 to 8In an embodiment of the present invention, a smoke particle detection device includes a flue 1, a connecting seat 2 is fixedly connected to one side of the flue 1, a C-shaped groove 3 is opened inside the connecting seat 2, the C-shaped groove 3 is connected to the flue 1, a particle concentration detector 4 is installed in the inner cavity of the C-shaped groove 3, the C-shaped groove 3 is opened by a shielding mechanism 5, and the particle concentration detector 4 is installed by an installation mechanism 6, the shielding mechanism 5 includes a rotating block 501, the rotating block 501 is rotatably connected to the side of the outer wall of the flue 1 away from the connecting seat 2, one end of the rotating block 501 is fixedly connected to a connecting shaft 502, one end of the connecting shaft 502 is fixedly connected to a first spur gear 503, the interior of the connecting seat 2 is located on the upper and lower sides of the outer wall of the first spur gear 503 and is symmetrically rotatably connected to a second spur gear 504, one end of the second spur gear 504 is fixedly connected to a threaded rod 505, the outer wall of the threaded rod 505 is connected to a slider 506, the slider 506 The shielding mechanism 5 is slidably connected to the interior of the connecting seat 2 and extends to the inner cavity of the flue 1. The shielding mechanism 5 also includes a baffle 507, which is rotatably connected to the inner cavity of the flue 1 at the junction of the C-shaped groove 3. The outer wall of the baffle 507 is fixedly connected to the third spur gear 508, and the slider 506 is in contact with the third spur gear 508. A fixing groove 509 is provided on the outer wall of the rotating block 501. When contracted, the outer wall of the flue 1 is located above the rotating block 501 and is fixedly connected to a fixed seat 510. The interior of the fixed seat 510 is slidably connected to a fixed block 511 extending to the bottom of the fixed seat 510, and a first spring 512 is connected between the fixed block 511 and the fixed seat 510. The interior of the connecting seat 2 is slidably connected to a horizontal plate 513 extending to the inner cavity of the flue 1, and a reset spring 514 is connected between the horizontal plate 513 and the connecting seat 2. Ventilation grooves 515 are provided at the top and bottom ends of the connecting seat 2, and a vertical groove 516 is provided on the outer wall of the horizontal plate 513.

[0030] In this embodiment: under normal production operation, when there is no need to detect the smoke composition, the smoke is discharged through the smoke duct 1. At this time, the baffle 507 blocks the C-shaped groove 3, and the smoke cannot enter the C-shaped groove 3.

[0031] When the smoke particles are detected, the fixed block 511 is pushed to move, which squeezes the first spring 512. At this time, the fixed block 511 moves out of the fixed groove 509 and cancels the fixation of the rotating block 501. The rotating block 501 is rotated, and the rotating block 501 rotates to drive the connecting shaft 502 to rotate. The connecting shaft 502 rotates to drive the first spur gear 503 to rotate. The first spur gear 503 rotates to drive the second spur gear 504 to rotate. The second spur gear 504 rotates to drive the threaded rod 505 to rotate. The threaded rod 505 rotates The slider 506 is driven to move, and the displacement of the slider 506 drives the third spur gear 508 to rotate. The rotation of the third spur gear 508 drives the baffle 507 to rotate. The baffle 507 rotates horizontally to block the inner cavity of the flue 1. At the same time, the baffle 507 rotates to open the C-shaped groove 3. The flue passes through the C-shaped groove 3, and the particle concentration detector 4 detects the flue gas particles. After the detection is completed, the rotating block 501 is rotated to drive the baffle 507 to rotate to block the C-shaped groove 3 to prevent smoke from entering the C-shaped groove 3.

[0032] When the C-shaped groove 3 is opened, the horizontal plate 513 is partially moved into the inner cavity of the flue 1 by the elastic force of the return spring 514, so that the ventilation groove 515 and the vertical groove 516 are misaligned, and the horizontal plate 513 closes the ventilation groove 515; when the C-shaped groove 3 is closed, the baffle 507 rotates and contacts the horizontal plate 513, pushing the horizontal plate 513 to move, and the displacement of the horizontal plate 513 makes the ventilation groove 515 contact the vertical groove 516, and the smoke in the C-shaped groove 3 is discharged through the ventilation groove 515, which is convenient for preventing the particle concentration detector 4 from being exposed to the smoke for a long time, resulting in a short service life of the particle concentration detector 4.

[0033] Please refer to Figures 4 to 8The mounting mechanism 6 includes a mounting groove 601, which is provided on the outer wall of the connecting seat 2, a card slot 602 is provided at the bottom of the mounting groove 601, a mounting plate 603 is slidably connected to the inner wall of the mounting groove 601, a plug rod 604 is fixedly connected to the outer wall of the mounting plate 603, a slot 605 for inserting the plug rod 604 is provided on the inner wall of the C-shaped groove 3, a card block 606 extending to the bottom of the mounting plate 603 is slidably connected to the inside of the mounting plate 603, a second spring 607 is connected between the card block 606 and the mounting plate 603, and the mounting mechanism 6 also includes a movable frame 608, which is slidably connected to the inside of the mounting plate 603, and the inner cavity of the card block 606 and the movable frame 608 The outer wall of the mounting plate 603 is rotatably connected to a rotating column 610, one end of the rotating column 610 is fixedly connected to a cam-shaped extrusion block 609, and the extrusion block 609 is located in the inner cavity of the movable frame 608. A positioning groove 611 is provided on the outer wall of the first spur gear 503, and the interior of the connecting seat 2 is located on one side of the first spur gear 503 and is slidably connected to a positioning block 612, a third spring 613 is connected between the positioning block 612 and the connecting seat 2, the interior of the connecting seat 2 is located at the bottom end of the positioning block 612 and is rotatably connected to a fourth spur gear 614, the interior of the connecting seat 2 is located at the bottom end of the fourth spur gear 614 and is slidably connected to a push block 615, and the push block 615 extends to the inner cavity of the slot 605.

[0034] In this embodiment: when installing the particle concentration detector 4, the mounting plate 603 is connected into the mounting slot 601, and the insertion rod 604 is inserted into the slot 605 until the block 606 is moved into the slot 602 by the elastic force of the second spring 607 to fix the mounting plate 603; when dismantling the particle concentration detector 4, the rotating column 610 is rotated, and the rotation of the rotating column 610 drives the extrusion block 609 to rotate, and the extrusion block 609 rotates to push the movable frame 608 to move, and the displacement of the movable frame 608 drives the block 606 to move, and the block 606 moves out of the slot 602, canceling the fixation of the mounting plate 603, and the mounting plate 603 is taken out of the mounting slot 601, and the particle concentration detector 4 is disassembled and repaired.

[0035] When the particle concentration detector 4 is installed, the insertion rod 604 is inserted into the slot 605 and contacts the push block 615, pushing the push block 615 to move, and the movement of the push block 615 drives the fourth spur gear 614 to rotate, and the rotation of the fourth spur gear 614 drives the positioning block 612 to move, and the positioning block 612 moves out of the positioning slot 611 to cancel the fixation of the first spur gear 503, so that the first spur gear 503 can be rotated, so that the baffle 507 can be rotated, which is convenient for the rapid installation and disassembly of the particle concentration detector 4, and at the same time prevents the baffle 507 from opening when the particle concentration detector 4 is replaced, causing the smoke to be discharged through the installation slot 601, affecting the operator.

[0036] Please refer to Figures 1 to 4 The first spur gear 503 is meshed with the second spur gear 504 , and a threaded hole is provided on the outer wall of the slider 506 , which matches the threaded rod 505 .

[0037] In this embodiment: the rotating block 501 is rotated, the rotating block 501 rotates to drive the connecting shaft 502 to rotate, the connecting shaft 502 rotates to drive the first spur gear 503 to rotate, the first spur gear 503 rotates to drive the second spur gear 504 to rotate, the second spur gear 504 rotates to drive the threaded rod 505 to rotate, and the threaded rod 505 rotates to drive the slider 506 to move.

[0038] Please refer to Figures 1 to 4 The outer wall of the slider 506 is provided with a tooth groove, which meshes with the third spur gear 508 .

[0039] In this embodiment, the threaded rod 505 rotates to drive the slider 506 to move, the displacement of the slider 506 drives the third spur gear 508 to rotate, and the rotation of the third spur gear 508 drives the baffle 507 to rotate.

[0040] Please refer to Figures 1 to 4 The inner wall of the fixing groove 509 fits with the outer wall of the fixing block 511, and the fixing block 511 is in an L-shape.

[0041] In this embodiment, the fixed block 511 is displaced by the elastic force of the first spring 512 , and the fixed block 511 is inserted into the fixing groove 509 to fix the rotating block 501 .

[0042] Please refer to Figures 4 to 8 The inner wall of the mounting groove 601 fits with the outer wall of the mounting plate 603 , and the outer wall of the insertion rod 604 fits with the inner wall of the slot 605 .

[0043] In this embodiment: the mounting plate 603 is connected into the mounting slot 601 , and the insertion rod 604 is inserted into the slot 605 until the clamping block 606 moves into the clamping slot 602 under the elastic force of the second spring 607 , thereby fixing the mounting plate 603 .

[0044] Please refer to Figures 4 to 8 , the inner wall of the card slot 602 is in contact with the bottom end of the card block 606 .

[0045] In this embodiment: the rotating column 610 is rotated, and the rotation of the rotating column 610 drives the extrusion block 609 to rotate, and the extrusion block 609 rotates to push the movable frame 608 to move, and the displacement of the movable frame 608 drives the clamping block 606 to move, and the clamping block 606 moves out of the clamping slot 602, canceling the fixation of the mounting plate 603, and taking the mounting plate 603 out of the mounting slot 601.

[0046] Please refer to Figures 4 to 8 The outer wall of one end of the positioning block 612 is in contact with the inner wall of the positioning groove 611 , and the outer walls of the positioning block 612 and the pushing block 615 are provided with gear teeth, which mesh with the fourth spur gear 614 .

[0047] In this embodiment: the insertion rod 604 is inserted into the slot 605 and contacts the pushing block 615, pushing the pushing block 615 to move, the movement of the pushing block 615 drives the fourth spur gear 614 to rotate, the rotation of the fourth spur gear 614 drives the positioning block 612 to move, the positioning block 612 moves out of the positioning groove 611 to cancel the fixation of the first spur gear 503, so that the first spur gear 503 can rotate, thereby the baffle 507 can be rotated.

[0048] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A smoke particle detection device, comprising a smoke duct (1), characterized in that: A connection seat (2) is fixedly connected to one side of the flue (1); a C-shaped groove (3) is provided inside the connection seat (2); the C-shaped groove (3) is in communication with the flue (1); a particle concentration detector (4) is installed in the inner cavity of the C-shaped groove (3); the C-shaped groove (3) is opened by a shielding mechanism (5); the particle concentration detector (4) is installed by an installation mechanism (6); the shielding mechanism (5) comprises a rotating block (501); the rotating block (501) is rotatably connected to a side of the outer wall of the flue (1) away from the connection seat (2). , one end of the rotating block (501) is fixedly connected to a connecting shaft (502), one end of the connecting shaft (502) is fixedly connected to a first spur gear (503), the interior of the connecting seat (2) is located on the upper and lower sides of the outer wall of the first spur gear (503) and is symmetrically rotatably connected to a second spur gear (504), one end of the second spur gear (504) is fixedly connected to a threaded rod (505), the outer wall of the threaded rod (505) is connected to a slider (506), and the slider (506) is slidably connected to the interior of the connecting seat (2) and extends to the inner cavity of the flue (1); The shielding mechanism (5) further comprises a baffle (507), the baffle (507) being rotatably connected to a position where the inner cavity of the flue (1) and the C-shaped groove (3) meet, the outer wall of the baffle (507) being fixedly connected to a third spur gear (508), the sliding block (506) being in contact with the third spur gear (508), the outer wall of the rotating block (501) being provided with a fixing groove (509), and the outer wall of the flue (1) being located above the rotating block (501) and being fixedly connected to a fixing seat (510) when the flue (1) is retracted, and the fixing seat (510) being fixedly connected to the outer wall of the flue (1), and the fixing seat (510) being fixedly connected to the outer wall of the flue (1). ) is internally slidably connected to a fixed block (511) extending to the bottom of the fixed seat (510), a first spring (512) is connected between the fixed block (511) and the fixed seat (510), the internal of the connecting seat (2) is slidably connected to a horizontal plate (513) extending to the inner cavity of the flue (1), a return spring (514) is connected between the horizontal plate (513) and the connecting seat (2), the top and bottom ends of the connecting seat (2) are provided with ventilation grooves (515), and the outer wall of the horizontal plate (513) is provided with a vertical groove (516); The mounting mechanism (6) comprises a mounting groove (601), the mounting groove (601) being provided on the outer wall of the connecting seat (2), a clamping groove (602) being provided at the bottom end of the mounting groove (601), a mounting plate (603) being slidably connected to the inner wall of the mounting groove (601), an insertion rod (604) being fixedly connected to the outer wall of the mounting plate (603), a slot (605) being provided on the inner wall of the C-shaped groove (3) for inserting the insertion rod (604), a clamping block (606) extending to the bottom of the mounting plate (603) being slidably connected to the inside of the mounting plate (603), and a second spring (607) being connected between the clamping block (606) and the mounting plate (603); The mounting mechanism (6) further comprises a movable frame (608), the movable frame (608) being slidably connected to the interior of the mounting plate (603), the clamping block (606) being in contact with the inner cavity of the movable frame (608), the outer wall of the mounting plate (603) being rotatably connected to a rotating column (610), one end of the rotating column (610) being fixedly connected to a cam-shaped extrusion block (609), the extrusion block (609) being located in the inner cavity of the movable frame (608), and the outer wall of the first spur gear (503) being provided with a positioning groove (611 ), a positioning block (612) is slidably connected to one side of the first spur gear (503) inside the connecting seat (2), a third spring (613) is connected between the positioning block (612) and the connecting seat (2), a fourth spur gear (614) is rotatably connected to the bottom end of the positioning block (612) inside the connecting seat (2), a pushing block (615) is slidably connected to the bottom end of the fourth spur gear (614) inside the connecting seat (2), and the pushing block (615) extends to the inner cavity of the slot (605).

2. A smoke particle detection device according to claim 1, characterized in that: The first spur gear (503) is meshed with the second spur gear (504); a threaded hole is provided on the outer wall of the sliding block (506); and the threaded hole matches the threaded rod (505).

3. A smoke particle detection device according to claim 1, characterized in that: The outer wall of the sliding block (506) is provided with a tooth groove, and the tooth groove is meshed with the third spur gear (508).

4. A smoke particle detection device according to claim 1, characterized in that: The inner wall of the fixing groove (509) fits into the outer wall of the fixing block (511), and the fixing block (511) is L-shaped.

5. The smoke particle detection device according to claim 1, characterized in that: The inner wall of the installation groove (601) fits with the outer wall of the installation plate (603), and the outer wall of the insertion rod (604) fits with the inner wall of the slot (605).

6. A smoke particle detection device according to claim 1, characterized in that: The inner wall of the card slot (602) fits the bottom end of the card block (606).

7. The smoke particle detection device according to claim 1, characterized in that: The outer wall of one end of the positioning block (612) is in contact with the inner wall of the positioning groove (611), and the outer walls of the positioning block (612) and the pushing block (615) are provided with gear teeth, which mesh with the fourth spur gear (614).

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