A dust explosion-proof performance testing device based on limited space

Abstract

The present invention is applicable to the technical field of dust explosion-proof detection, and provides a dust explosion-proof performance testing device based on a limited space, including a pipeline component, wherein a detection component is snap-fitted on the outside of the pipeline component; the detection component includes a sealing member, two reciprocating members symmetrically slidingly fitted inside the sealing member, and a knocking member symmetrically slidingly fitted inside the sealing member, wherein the knocking member and the reciprocating member are slidingly fitted. The device solves the problem that, when the existing device is tested, some dust is easily adhered to the inner wall of the pipeline component for air circulation, and the outer wall of the pipeline component lacks a certain knocking structure, resulting in that when the dust concentration performance is detected inside the limited space, the air dust adhered to the inner wall of the pipeline component affects the later dust concentration performance detection data, thereby reducing the detection result of the dust explosion-proof performance test in the limited space and causing the dust explosion phenomenon to occur easily.

Description

Technical Field

[0001] The invention relates to the technical field of dust explosion-proof detection, and more specifically, to a dust explosion-proof performance testing device based on a limited space. Background Art

[0002] The dust explosion-proof performance test device for confined space is mostly a dust concentration detection technology widely used in ventilation and dust removal explosion-proof systems for enterprises involving metal dust, wood processing dust, medicinal dust, electrostatic spraying dust, etc.; however, traditional dust explosion-proof performance test devices for confined space are required to have an air flow channel for introducing tiny particulate air, and the air containing particulates is sent to the detection end of the dust concentration detection instrument through the air flow channel for performance testing to prevent it from exploding.

[0003] The existing dust explosion-proof performance test equipment in limited space often has the following technical problems during use:

[0004] That is, when the existing dust explosion-proof performance testing device for confined space is conducting a test, some dust is easily adhered to the inner wall of the pipe assembly for air circulation, and the outer wall of the pipe assembly lacks a certain knocking structure, resulting in that when the dust concentration performance test is conducted inside the confined space, the air dust adhered to the inner wall of the pipe assembly affects the subsequent dust concentration performance test data, reduces the test results of the dust explosion-proof performance test in the confined space, and makes it easy for dust explosions to occur. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a dust anti-combustion and explosion performance testing device based on a confined space, which can repeatedly knock on the outer wall of a pipe assembly to prevent dust in the air from adhering to the inner wall of the pipe assembly while performing dust concentration performance testing inside a confined space, thereby preventing it from affecting the subsequent dust concentration performance test data, improving the test results of the dust anti-combustion and explosion performance test in the confined space, and avoiding the occurrence of dust explosions.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A dust explosion-proof performance testing device based on a limited space comprises a pipeline component, and a detection component is snap-fitted on the outside of the pipeline component.

[0008] The detection assembly comprises a sealing member, two reciprocating members symmetrically slidably fitted inside the sealing member, and a knocking member symmetrically slidably fitted inside the sealing member, wherein the knocking member is slidably fitted with the reciprocating member.

[0009] The sealing component includes a sealing box body, which has U-shaped bottom plates fixed on two inner side walls relative to each other, two symmetrical guide columns fixed on the inner wall of the sealing box body, and an outer side surface of the sealing box body is connected and fixed with two symmetrical sliding sleeves. An outer side surface of the sealing box body is located between the two sliding sleeves and is connected and provided with a first air inlet pipe, the two U-shaped bottom plates are respectively slidably matched with two knocking parts, and the outer bottom of the sealing box body is threadedly connected to a dust concentration detection instrument extending into the interior thereof.

[0010] The reciprocating part includes a sliding cylinder that slides in a sliding sleeve, one end of the sliding cylinder is located inside a sealed box and is fixed with a reset spring, an L-shaped connecting plate is fixed to the outer peripheral side of the sliding cylinder, a bottom plate is fixed to the bottom of the L-shaped connecting plate, an oblique groove that slides with the knocking part is penetrated through the top of the bottom plate, the sliding cylinder slides with a guide column, and one end of the reset spring is fixedly connected to the inner wall of the sealed box.

[0011] The present invention is further configured as follows: one end of the first air inlet pipe is connected to a circular cylinder, and two symmetrical rectangular frames are fixed to the inner wall of the circular cylinder.

[0012] A first hinged seat is fixed at one end of the sliding cylinder, a reciprocating arm is hingedly fitted inside the first hinged seat, a second hinged seat is hingedly fitted at one end of the reciprocating arm, and a first I-shaped sliding block that slides on a rectangular frame is fixed on an outer side surface of the second hinged seat.

[0013] An elastic spring is fixed between a side surface of the first I-shaped sliding block and the inner wall of the rectangular frame.

[0014] The present invention is further configured as follows: a sliding rod is fixed to the other side of the first I-shaped sliding block, and a contact ball is fixed to one end of the sliding rod.

[0015] A conical cover is fixed to the inner wall of the circular cylinder, a supporting base is fixed to the inner wall of the circular cylinder at one end of the conical cover, a dual-axis motor is fixed at the center position of one side of the supporting base, an output shaft of the dual-axis motor is located inside the conical cover and a suction fan is fixed, and a rotating disk is fixed to the other output shaft of the dual-axis motor, a plurality of grooves distributed in a circular array are opened on the peripheral side of the rotating disk, and the inner walls of the grooves are in contact with the contact balls.

[0016] The inside of the circular cylinder is provided with arc-shaped connecting covers on two opposite sides of the supporting bottom plate, and a guide inclined pipe is provided between the arc-shaped connecting cover and the first air inlet pipe.

[0017] The present invention is further configured as follows: the knocking piece includes a second I-shaped sliding block that is slidably fitted inside a U-shaped bottom plate, a sliding column that is slidably fitted inside an oblique groove is fixed to the bottom of the second I-shaped sliding block, an oblique plate is fixed to the top of the second I-shaped sliding block, a U-shaped movable plate is fixed to the top of the oblique plate, a connecting plate is fixed to the center position of the inner side wall of the U-shaped movable plate, a first arc-shaped movable plate is fixed to one side of the connecting plate, a plurality of first connecting rods are fixed to the inner wall of the first arc-shaped movable plate, and a first rubber knocking ball is fixed to one end of the first connecting rod.

[0018] Two symmetrical second arc-shaped moving plates are fixed on an outer side surface of the U-shaped moving plate, a plurality of second connecting rods are fixed on the inner wall of the second arc-shaped moving plate, and a second rubber knocking ball is fixed on one end of the second connecting rod.

[0019] The present invention is further configured as follows: a second air inlet pipe is provided through and in communication with an outer side surface of the sealed box body, and a connecting flange is fixed to one end of the second air inlet pipe outside the sealed box body.

[0020] The top of the sealing box body is hingedly matched with a sealing cover plate, one side of the sealing box body is fixed with a first ear plate, and one side of the sealing cover plate is fixed with a second ear plate.

[0021] The present invention is further configured as follows: arc-shaped clamping grooves are provided on the peripheral sides of the first air intake pipe and the second air intake pipe, and two symmetrical clamping frames are fixed on the outer walls of the arc-shaped clamping grooves, and the two clamping frames are penetrated by a resistance rod that is slidably fitted on the two opposite outer sides, and one end of the resistance rod penetrates and is slidably fitted on the inner side of the sealing box, and one end of the resistance rod extends outward, and one end of the resistance rod is located outside the sealing box and is fixed with a pulling circular plate, and an elastic spring is fixed between one side of the pulling circular plate and an outer side of the sealing box.

[0022] The present invention is further configured as follows: the pipeline assembly comprises a pipeline member plugged and matched on two arc-shaped clamping grooves, and two symmetrical mixing members are plugged and fixed inside the pipeline member.

[0023] The pipeline member includes a central pipeline, and the central pipeline is connected to the conducting pipes on both opposite sides. The outer peripheral side of the conducting pipe is fixed with an arc-shaped clamping block that is snap-fitted on the arc-shaped clamping groove. The bottom of the arc-shaped clamping block is fixed with two symmetrical L-shaped pressure plates. The outer bottoms of the two L-shaped pressure plates are fixed with trapezoidal pressure plates that are slidably matched with the clamping frame. The bottom of the trapezoidal pressure plate is chamfered, and one side of the trapezoidal pressure plate is provided with a plug-in hole that is plug-fitted with the abutment rod.

[0024] The present invention is further configured as follows: the outer peripheral side surface of the central pipe is connected to a rectangular cover plugged into the detection end of the dust concentration detection instrument, and a rectangular sealing plate is fixed to the bottom of the rectangular cover.

[0025] A rectangular column is fixed at the center of the bottom of the sealing cover plate, an arc-shaped fixing plate is fixed at one end of the rectangular column, and an arc-shaped positioning plate that fits the outer peripheral side of the central pipe is fixed on the inner wall of the arc-shaped fixing plate.

[0026] The present invention is further configured as follows: two symmetrical positioning blocks are fixed to the inner wall of the conducting tube near one end face, a rectangular groove is opened on one side of the two positioning blocks, and a threaded column is fixed to the bottom of the rectangular groove.

[0027] The stirring member comprises a clamping plate clamped between two rectangular grooves, one side of the clamping plate is penetrated with two symmetrical positioning holes, and the two positioning holes are respectively plugged and matched with two threaded columns.

[0028] A rotating shaft is rotatably matched with a bearing at the center position of one side of the clamping plate, and a plurality of shaking fans are fixed in a linear array on the peripheral side of the rotating shaft, and a plurality of stirring blades are fixed at one end of the rotating shaft.

[0029] The advantages of the present invention are:

[0030] The present invention uses a first rubber knocking ball respectively fixed at one end of a plurality of first connecting rods and a second rubber knocking ball respectively fixed at one end of a plurality of second connecting rods to repeatedly reciprocate inside a U-shaped bottom plate, and finally knocks the outer wall of the pipeline component repeatedly, so as to prevent dust in the air from adhering to the inner wall of the pipeline component when performing dust concentration performance detection inside a limited space, thereby preventing dust from affecting later dust concentration performance detection data, improving the detection result of the dust anti-combustion and explosion performance test in the limited space, and avoiding the occurrence of dust explosion.

[0031] The present invention drives the entire pipeline component to gradually engage with and separate from the clamping frame and the arc-shaped clamping groove in sequence by respectively inserting and fixing the opposite end faces of the two abutting rods with the two plug-in holes, thereby completing the detachable installation and disassembly process between the pipeline component and the sealing box body, making it convenient for the staff to clean and replace the interior of the entire device in a timely manner, and bringing certain convenience to the staff.

[0032] During the use of the present invention, the dust suction operation of the device itself generates airflow, which generates airflow to a plurality of shaking fans fixedly connected to the lateral sides of the rotating shaft, driving the rotating shaft to rotate on the clamping plate, and thereby causing a plurality of stirring blades fixed at one end of the rotating shaft to shake and rotate at the same time, so as to fully shake and stir the dust entering the interior of the pipeline, avoiding detection errors when detecting dust concentration, thereby effectively improving the experimental data of the dust anti-combustion and explosion performance test in a confined space, and avoiding the occurrence of dust explosions. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1The present invention is a schematic structural diagram of a dust explosion prevention performance testing device based on a limited space.

[0034] Figure 2 The present invention is a top view of a dust explosion prevention performance testing device based on a limited space.

[0035] Figure 3 It is a schematic diagram of the structure of the pipeline assembly of the present invention.

[0036] Figure 4 It is a structural schematic diagram of the cross section of the pipeline assembly of the present invention.

[0037] Figure 5 It is a schematic diagram of the structure of the detection component of the present invention.

[0038] Figure 6 It is a schematic diagram of the cross-sectional structure of the detection component of the present invention.

[0039] Figure 7 It is a schematic diagram of the cross-sectional structure of the sealing member of the present invention.

[0040] Figure 8 It is a schematic structural diagram of the sealing element of the present invention.

[0041] Fig. 9 It is a side view of the cross-sectional structure of the sealing member of the present invention.

[0042] Fig.10 It is a top view of the sealing member of the present invention.

[0043] Fig.11 for Figure 7 Front view of .

[0044] Fig.12 It is a schematic structural diagram of the reciprocating member of the present invention.

[0045] Fig.13 It is a schematic structural diagram of the striking member of the present invention.

[0046] Fig.14 It is a schematic diagram of the structure of the pipeline component of the present invention.

[0047] Fig.15 It is a schematic structural diagram of the pipeline component of the present invention from another angle.

[0048] Fig.16 It is a front view of the pipeline component of the present invention.

[0049] Fig.17 It is a side view of the pipeline component of the present invention.

[0050] Fig.18 It is a schematic structural diagram of the stirring element of the present invention.

[0051] In the figure: 1, pipeline assembly; 2, detection assembly; 3, sealing member; 4, reciprocating member; 5, knocking member; 6, pipeline member; 7, stirring member; 301, sealing box; 302, U-shaped bottom plate; 303, guide column; 304, sliding sleeve; 305, first air inlet pipe; 306, dust concentration detection instrument; 307, circular cylinder; 308, rectangular frame; 309, cone cover; 310, supporting bottom plate; 311, dual-axis motor; 312, suction fan; 313, rotating disk; 3 14, groove; 315, second air inlet pipe; 316, connecting flange; 317, sealing cover plate; 318, first ear plate; 319, second ear plate; 320, arc-shaped snap-fit ​​groove; 321, snap-fit ​​frame; 322, abutment rod; 323, pull circular plate; 324, elastic spring; 325, rectangular column; 326, arc-shaped fixing plate; 327, arc-shaped positioning plate; 328, arc-shaped connecting cover; 329, guide inclined pipe; 401, sliding cylinder; 402, return spring; 403, L-shaped connecting plate; 404, bottom plate; 405, oblique groove; 406, first hinge seat; 407, reciprocating arm; 408, second hinge seat; 409, first I-shaped slider; 410, elastic spring; 411, sliding rod; 412, contact ball; 501, second I-shaped slider; 502, sliding column; 503, oblique plate; 504, U-shaped moving plate; 505, connecting plate; 506, first arc-shaped moving plate; 507, first connecting rod; 508, first rubber knocking ball; 509 , second arc-shaped movable plate; 510, second connecting rod; 511, second rubber knocking ball; 601, central pipe; 602, conducting pipe; 603, arc-shaped clamping block; 604, L-shaped pressure plate; 605, trapezoidal pressure plate; 606, plug-in hole; 607, rectangular cover; 608, rectangular sealing plate; 609, positioning block; 610, rectangular groove; 611, threaded column; 701, clamping plate; 702, positioning hole; 703, rotating shaft; 704, shaking fan; 705, stirring blade. DETAILED DESCRIPTION

[0052] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0053] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0054] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0055] For example, see Figure 1-18 , the present invention provides the following technical solutions:

[0056] A dust explosion-proof performance testing device based on a limited space, specifically, includes a pipeline component 1, the pipeline component 1 is externally snap-fitted with a detection component 2; the detection component 2 includes a sealing member 3, two reciprocating members 4 symmetrically slidably fitted inside the sealing member 3, and a knocking member 5 symmetrically slidably fitted inside the sealing member 3, the knocking member 5 slidingly fitting with the reciprocating member 4; the sealing member 3 includes a sealing box 301, the sealing box 301 has U-shaped bottom plates 302 fixed to both inner side walls thereof, two symmetrical guide columns 303 fixed to the inner wall of the sealing box 301, an outer side surface of the sealing box 301 is connected and fixed with two symmetrical sliding sleeves 304, an outer side surface of the sealing box 301 is located between the two sliding sleeves 304 and penetrates a connecting device A first air inlet pipe 305 is arranged, two U-shaped bottom plates 302 are respectively slidably matched with two knocking pieces 5, and a dust concentration detection instrument 306 extending into the interior is threadedly connected to the outer bottom of the sealed box 301; the reciprocating member 4 includes a sliding cylinder 401 slidably matched inside the sliding sleeve 304, one end of the sliding cylinder 401 is located inside the sealed box 301 and fixed with a return spring 402, an L-shaped connecting plate 403 is fixed to the outer peripheral side of the sliding cylinder 401, a bottom plate 404 is fixed to the bottom of the L-shaped connecting plate 403, an oblique groove 405 slidably matched with the knocking piece 5 is penetrated through the top of the bottom plate 404, the sliding cylinder 401 is slidably matched with the guide column 303, and one end of the return spring 402 is fixedly connected to the inner wall of the sealed box 301;

[0057] Further, a circular cylinder 307 is connected to one end of the first air inlet pipe 305, and two symmetrical rectangular frames 308 are fixed to the inner wall of the circular cylinder 307; a first hinge seat 406 is fixed to one end of the sliding cylinder 401, and a reciprocating arm 407 is hingedly matched inside the first hinge seat 406, and a second hinge seat 408 is hingedly matched at one end of the reciprocating arm 407, and a first I-shaped slider 409 that slides on the rectangular frame 308 is fixed to one outer side surface of the second hinge seat 408; an elastic spring 410 is fixed between one side surface of the first I-shaped slider 409 and the inner wall of the rectangular frame 308; A sliding rod 411 is fixed to the other side of the first I-shaped slider 409, and a contact ball 412 is fixed to one end of the sliding rod 411; a conical cover 309 is fixed to the inner wall of the circular cylinder 307, and a supporting base plate 310 is fixed to the inner wall of the circular cylinder 307 at one end of the conical cover 309, and a dual-axis motor 311 is fixed to the center position of one side of the supporting base plate 310, and an output shaft of the dual-axis motor 311 is located inside the conical cover 309 and a suction fan 312 is fixed, and a rotating disk 313 is fixed to the other output shaft of the dual-axis motor 311, and a plurality of circular arrays are provided on the side surface of the rotating disk 313 The inner wall of the groove 314 is fitted with the contact ball 412; the inner side of the circular cylinder 307 is provided with an arc-shaped connecting cover 328 on both sides opposite to the supporting bottom plate 310, and a guide oblique pipe 329 is provided between the arc-shaped connecting cover 328 and the first air inlet pipe 305; the knocking member 5 includes a second I-shaped slider 501 slidably fitted in the U-shaped bottom plate 302, a sliding column 502 slidably fitted in the oblique groove 405 is fixed at the bottom of the second I-shaped slider 501, an oblique plate 503 is fixed at the top of the second I-shaped slider 501, and the top of the oblique plate 503 A U-shaped movable plate 504 is fixed to the top, a connecting plate 505 is fixed to the center of the inner wall of the U-shaped movable plate 504, a first arc-shaped movable plate 506 is fixed to one side of the connecting plate 505, a plurality of first connecting rods 507 are fixed to the inner wall of the first arc-shaped movable plate 506, and a first rubber knocking ball 508 is fixed to one end of the first connecting rod 507; two symmetrical second arc-shaped movable plates 509 are fixed to an outer side surface of the U-shaped movable plate 504, a plurality of second connecting rods 510 are fixed to the inner wall of the second arc-shaped movable plate 509, and a second rubber knocking ball 511 is fixed to one end of the second connecting rod 510.

[0058] The specific application of this embodiment 1 is:

[0059] When the entire device is installed, during the process of detecting dust inside the limited space, the dual-axis motor 311 is started by controlling the external controller to drive the suction fan 312 whose output shaft is located inside the conical cover 309 to rotate, thereby driving the air dust to be detected inside the limited space to enter the arc-shaped connecting cover 328 arranged on the two opposite sides of the support bottom plate 310 inside the circular cylinder 307, and then enter the first air inlet pipe 305 through the two guide inclined pipes 329, and then enter the part to be detected, so as to perform the dust concentration detection in the later stage and avoid the occurrence of dust explosion;

[0060] In the process of dust detection, as the external controller controls the starting of the dual-axis motor 311 (the controller is a prior art, not shown in the figure, and its specific control process is not elaborated here), the rotating disk 313 fixed to the other output shaft of the dual-axis motor 311 rotates. During the rotation of the rotating disk 313, the plurality of grooves 314 distributed in a circumferential array on the side surface of the rotating disk 313 will repeatedly and sequentially contact the two contact balls 412 fixed to the opposite end surfaces of the two sliding rods 411. When the two contact balls 412 repeatedly contact each other with the plurality of grooves 314 distributed in a circumferential array on the side surface of the rotating disk 313, the two contact balls 412 can be driven to move on the two rectangular frames 308 respectively, thereby driving the two first I-shaped sliders 409 to move on the two rectangular frames 308 respectively. The first hinge seat 406 and the second hinge seat 408 are connected to the first hinge seat 406 and the second hinge seat 408, and the first hinge seat 406 is connected to the second hinge seat 408 and the second hinge seat 408. The first hinge seat 406 is connected to the second hinge seat 408 and the second hinge seat 408 is connected to the first hinge seat 406 .... The first hinge seat 406 is connected to the second hinge seat 408 and the second hinge seat 408. The first hinge seat 406 is connected to the second hinge seat 408 and the second hinge seat 408. The first hinge seat 406 is connected to the second hinge seat 408 and the second hinge seat 408. The first hinge seat 406 is connected to the second hinge seat 408 and the second hinge seat 408. The first hinge seat

[0061] When the sliding cylinder 401 repeatedly moves back and forth on the sliding sleeve 304 and the guide column 303, the oblique groove 405 penetrated through the top of the bottom plate 404 thereof also synchronously and repeatedly slides on the peripheral side surface of the sliding column 502, thereby driving the second I-shaped sliding block 501 in the knocking member 5 to repeatedly move inside the U-shaped bottom plate 302, so that the first rubber knocking balls 508 fixed at one end of the first connecting rods 507 and the second rubber knocking balls 511 fixed at one end of the second connecting rods 510 repeatedly move back and forth inside the U-shaped bottom plate 302, and finally repeatedly knock the outer wall of the pipeline assembly 1, so as to avoid the dust in the air from adhering to the inner wall of the pipeline assembly 1 when the dust concentration performance is detected inside the confined space, so as to prevent the dust from affecting the later dust concentration performance detection data, thereby improving the detection results of the dust explosion prevention performance test in the confined space and avoiding the occurrence of dust explosion.

[0062] For example 2, please refer to Figure 1-18The second embodiment is improved on the basis of the first embodiment as follows. Specifically, a second air inlet pipe 315 is provided through and connected to an outer side surface of the sealed box body 301, and a connecting flange 316 is fixed to one end of the second air inlet pipe 315 located outside the sealed box body 301; a sealing cover plate 317 is hingedly matched with the top of the sealed box body 301, a first ear plate 318 is fixed to one side of the sealed box body 301, and a second ear plate 319 is fixed to one side of the sealing cover plate 317; arc-shaped clamping grooves 320 are provided on the peripheral sides of the first air inlet pipe 305 and the second air inlet pipe 315, and two symmetrical clamping frames 321 are fixed to the outer walls of the arc-shaped clamping grooves 320, and the two clamping frames 321 are penetrated and slidably matched with abutment rods 322 on both relative outer sides. , one end of the resistance rod 322 passes through and slides on the inner side of the sealing box body 301, and one end of the resistance rod 322 extends outward, one end of the resistance rod 322 is located outside the sealing box body 301 and is fixed with a pulling circular plate 323, and an elastic spring 324 is fixed between one side of the pulling circular plate 323 and an outer side of the sealing box body 301; the pipeline assembly 1 includes a pipeline member 6 plugged into and fitted on the two arc-shaped clamping grooves 320, and two symmetrical stirring members 7 are plugged and fixed inside the pipeline member 6; the pipeline member 6 includes a central pipeline 601, and the central pipeline 601 is connected to the two opposite sides with a conducting pipe 602, and the outer peripheral side of the conducting pipe 602 is fixed with an arc-shaped clamping block 603 clamped and fitted on the arc-shaped clamping groove 320, and the arc-shaped clamping block Two symmetrical L-shaped pressure plates 604 are fixed at the bottom of 603, and the outer bottoms of the two L-shaped pressure plates 604 are fixed with trapezoidal pressure plates 605 that slide with the clamping frame 321. The bottom of the trapezoidal pressure plate 605 is chamfered, and one side of the trapezoidal pressure plate 605 is provided with a plug hole 606 that plugs with the abutment rod 322; the peripheral side of the central pipe 601 is connected to a rectangular cover 607 that plugs in and fits on the detection end of the dust concentration detection instrument 306, and a rectangular sealing plate 608 is fixed at the bottom of the rectangular cover 607; a rectangular column 325 is fixed at the center position of the bottom of the sealing cover plate 317, and an arc-shaped fixed plate 326 is fixed at one end of the rectangular column 325, and the inner wall of the arc-shaped fixed plate 326 is fixed with a An arc-shaped positioning plate 327 whose sides fit each other; two symmetrical positioning blocks 609 are fixed to the inner wall of the conducting tube 602 near one end face, and a rectangular groove 610 is provided on one side of the two positioning blocks 609, and a threaded column 611 is fixed to the bottom of the rectangular groove 610; the stirring member 7 includes a clamping plate 701 that is clamped and fitted between the two rectangular grooves 610, and two symmetrical positioning holes 702 are penetrated and provided on one side of the clamping plate 701, and the two positioning holes 702 are respectively plugged and fitted with the two threaded columns 611; a rotating shaft 703 is rotatably fitted with a bearing at the center position of one side of the clamping plate 701, and a plurality of shaking fans 704 are fixed in a linear array on the side surface of the rotating shaft 703, and a plurality of stirring blades 705 are fixed at one end of the rotating shaft 703.

[0063] The specific application of this second embodiment is:

[0064] During the use of the device, the connecting flange 316 fixed at one end of the second air inlet pipe 315 outside the sealed box 301 is fixedly connected to the exhaust pipe in the limited space, so that the entire device is installed inside the limited space, thereby performing real-time performance detection of dust concentration inside the limited space to avoid dust explosion.

[0065] Before the dust explosion-proof performance test in a limited space is conducted, the clamping plate 701 in the mixing member 7 is first clamped and matched to the inside of the two rectangular grooves 610, and at the same time, the two positioning holes 702 formed through one side of the clamping plate 701 are respectively inserted into the threaded columns 611 respectively fixed to the bottom of the two rectangular grooves 610, and finally, the clamping plate 701 clamped between the two rectangular grooves 610 is positioned and fixed by rotating the thread between the external nut and the threaded column 611, thereby completing the detachable installation and fixation between the mixing member 7 and the pipe member 6;

[0066] After the detachable installation and fixation between the stirring member 7 and the pipe member 6 are completed, the sealing cover plate 317 hingedly matched on the top of the sealing box body 301 is turned over, so that the top of the sealing box body 301 is in an open state, and then the arc-shaped clamping block 603 fixed on the outer peripheral side of the guide tube 602 is clamped and matched inside the arc-shaped clamping groove 320, so that the two L-shaped pressing plates 604 fixed on the bottom of the arc-shaped clamping block 603 gradually approach the inside of the two clamping frames 321, and then the two trapezoidal pressing plates 605 gradually approach the inside of the two clamping frames 321, so that The chamfered structures provided at the bottom of the two trapezoidal pressure plates 605 gradually approach the opposite end faces of the two abutting rods 322, thereby giving the two abutting rods 322 a force to move away from each other, thereby driving the two abutting rods 322 to move away from each other. During the process of moving away from each other, the elastic spring 324 fixedly connected between the pulling circular plate 323 and the sealing box body 301 is stretched until the two arc-shaped clamping blocks 603 are completely engaged with the two arc-shaped clamping grooves 320 respectively, and the insertion hole 606 provided on one side of the trapezoidal pressure plate 605 is in mutual engagement with one end of the abutting rod 322. The two contact rods 322 are brought closer to each other and finally connected and fixed to each other with the two plug holes 606 (before the connection and fixation, sealing gaskets are placed at the joints between the rectangular sealing plate 608 and the bottom of the sealing box 301 and between the arc-shaped clamping block 603 and the arc-shaped clamping groove 320 to ensure the sealing performance of the detachable installation between the pipe member 6 and the sealing box 301), thereby completing the detachable installation process between the pipe member 6 and the sealing box 301. After the detachable installation process is completed, the sealing cover plate 317 hingedly matched with the top of the sealing box 301 is rotated in the opposite direction, so that the top of the sealing box 301 is in a closed state, so that the arc-shaped positioning plate 327 fixed by the inner wall of the arc-shaped fixing plate 326 is finally fitted with the outer peripheral side of the central pipe 601, so as to further fit and position the pipe member 6 fixed by the clamping, and after the fitting and positioning is completed, the first ear plate 318 and the second ear plate 319 are connected and fixed by external bolts, so that the sealing box 301 is in a relatively sealed state;

[0067] When the entire device needs to be disassembled and cleaned, the external bolts connected and fixed between the first ear plate 318 and the second ear plate 319 are checked and handled, and then the sealing cover plate 317 hingedly matched on the top of the sealing box body 301 is flipped over, so that the outer top of the sealing box body 301 is in an open state, and then the pulling circular plate 323 is pulled, so that the elastic spring 324 fixedly connected between the pulling circular plate 323 and the sealing box body 301 is stretched, driving the resistance rod 322 plugged in the plug hole 606 to separate from the plug hole 606, until the resistance rod 322 is completely separated from the plug hole 606, and then the entire pipeline member 6 is pulled upward, so that the entire pipeline member 6 begins to gradually separate from the clamping frame 321 and the arc-shaped clamping groove 320 respectively, thereby completing the detachable installation of the entire pipeline member 6, which is convenient for timely cleaning and replacement of the interior of the entire device;

[0068] After the above-mentioned detachable installation is completed, airflow is generated through the dust suction operation of the device itself, and then airflow is generated on several shaking fans 704 fixedly connected to the side surfaces of the rotating shaft 703, thereby driving the rotating shaft 703 to rotate at the center position of one side of the clamping plate 701, and thereby making several stirring blades 705 fixed at one end of the rotating shaft 703 shake and rotate at the same time, so as to fully shake and stir the dust entering the inside of the pipe member 6, and finally timely detect the dust concentration inside the confined space through the dust concentration detection instrument 306 (the dust concentration detection instrument 306 is a prior art, and its specific use and detection process are not elaborated here), so as to avoid detection errors when detecting dust concentration, thereby effectively improving the experimental data of the dust explosion prevention performance test in the confined space, and avoiding the occurrence of dust explosion.

[0069] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0070] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0071] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0073] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A dust explosion prevention performance testing device based on a limited space, comprising a pipeline assembly (1), characterized in that: The pipeline component (1) is externally snap-fitted with a detection component (2); The detection assembly (2) comprises a sealing member (3), two reciprocating members (4) symmetrically slidably fitted inside the sealing member (3), and a knocking member (5) symmetrically slidably fitted inside the sealing member (3), wherein the knocking member (5) is slidably fitted with the reciprocating member (4); The sealing member (3) comprises a sealing box (301), wherein two U-shaped bottom plates (302) are fixed to two inner side walls of the sealing box (301), two symmetrical guide pillars (303) are fixed to the inner wall of the sealing box (301), an outer side surface of the sealing box (301) is connected and fixed with two symmetrical sliding sleeves (304), an outer side surface of the sealing box (301) is located between the two sliding sleeves (304) and is provided with a first air intake pipe (305) that is connected and penetrates and is provided on the outer side surface of the sealing box (301), the two U-shaped bottom plates (302) are respectively slidably matched with two knocking members (5), and a dust concentration detection instrument (306) extending into the interior of the sealing box (301) is threadedly connected to the outer bottom of the sealing box (301); The reciprocating member (4) comprises a sliding cylinder (401) which is slidably engaged inside a sliding sleeve (304); one end of the sliding cylinder (401) is located inside the sealing box (301) and is fixed with a return spring (402); an L-shaped connecting plate (403) is fixed to the outer peripheral side of the sliding cylinder (401); a bottom plate (404) is fixed to the bottom of the L-shaped connecting plate (403); an oblique groove (405) which is slidably engaged with the knocking member (5) is formed through the top of the bottom plate (404); the sliding cylinder (401) is slidably engaged with the guide column (303); and one end of the return spring (402) is fixedly connected to the inner wall of the sealing box (301).

2. The dust explosion prevention performance testing device based on a limited space according to claim 1 is characterized in that: One end of the first air inlet pipe (305) is connected to a circular cylinder (307), and two symmetrical rectangular frames (308) are fixed to the inner wall of the circular cylinder (307); A first hinge seat (406) is fixed at one end of the sliding cylinder (401), a reciprocating arm (407) is hingedly matched inside the first hinge seat (406), a second hinge seat (408) is hingedly matched at one end of the reciprocating arm (407), and a first I-shaped sliding block (409) that is slidably matched on the rectangular frame (308) is fixed on an outer side surface of the second hinge seat (408); An elastic spring (410) is fixed between a side surface of the first I-shaped sliding block (409) and the inner wall of the rectangular frame (308).

3. The dust explosion prevention performance testing device based on a limited space according to claim 2 is characterized in that: A sliding rod (411) is fixed to the other side of the first I-shaped sliding block (409), and a contact ball (412) is fixed to one end of the sliding rod (411); A conical cover (309) is fixed to the inner wall of the circular cylinder (307); a supporting base plate (310) is fixed to the inner wall of the circular cylinder (307) at one end of the conical cover (309); a dual-axis motor (311) is fixed at the center of one side of the supporting base plate (310); an output shaft of the dual-axis motor (311) is located inside the conical cover (309) and a suction fan (312) is fixed thereto; a rotating disk (313) is fixed to the other output shaft of the dual-axis motor (311); a plurality of grooves (314) distributed in a circumferential array are formed on the circumferential side surface of the rotating disk (313); the inner wall of the groove (314) is in contact with the contact ball (412); The circular cylinder (307) is provided with arc-shaped connecting covers (328) on two opposite side surfaces of the supporting bottom plate (310), and a flow guiding inclined pipe (329) is provided between the arc-shaped connecting cover (328) and the first air inlet pipe (305).

4. The dust explosion prevention performance testing device based on a limited space according to claim 3 is characterized in that: The knocking member (5) comprises a second I-shaped sliding block (501) slidably fitted inside the U-shaped bottom plate (302); a sliding column (502) slidably fitted inside the oblique groove (405) is fixed at the bottom of the second I-shaped sliding block (501); an inclined plate (503) is fixed at the top of the second I-shaped sliding block (501); a U-shaped moving plate (504) is fixed at the top of the inclined plate (503); a connecting plate (505) is fixed at the center of the inner wall of the U-shaped moving plate (504); a first arc-shaped moving plate (506) is fixed on one side of the connecting plate (505); a plurality of first connecting rods (507) are fixed on the inner wall of the first arc-shaped moving plate (506); and a first rubber knocking ball (508) is fixed at one end of the first connecting rod (507); Two symmetrical second arc-shaped moving plates (509) are fixed to an outer side surface of the U-shaped moving plate (504), a plurality of second connecting rods (510) are fixed to the inner wall of the second arc-shaped moving plate (509), and a second rubber knocking ball (511) is fixed to one end of the second connecting rod (510).

5. The dust explosion prevention performance testing device based on a limited space according to claim 4 is characterized in that: A second air inlet pipe (315) is provided through and in communication with an outer side surface of the sealed box body (301); one end of the second air inlet pipe (315) is located outside the sealed box body (301) and is fixed with a connecting flange (316); The top of the sealed box body (301) is hingedly matched with a sealed cover plate (317), one side of the sealed box body (301) is fixed with a first ear plate (318), and one side of the sealed cover plate (317) is fixed with a second ear plate (319).

6. The dust explosion prevention performance testing device based on a limited space according to claim 5 is characterized in that: The first air inlet pipe (305) and the second air inlet pipe (315) are provided with arc-shaped clamping grooves (320) on their circumferential sides. Two symmetrical clamping frames (321) are fixed to the outer walls of the arc-shaped clamping grooves (320). The two clamping frames (321) are provided with a resistance rod (322) that is slidably fitted through the two opposite outer sides. One end of the resistance rod (322) is slidably fitted through the inner side of the sealing box (301), and one end of the resistance rod (322) extends outward. One end of the resistance rod (322) is located outside the sealing box (301) and is fixed with a pulling circular plate (323). An elastic spring (324) is fixed between one side of the pulling circular plate (323) and an outer side of the sealing box (301).

7. The dust explosion prevention performance testing device based on a limited space according to claim 6 is characterized in that: The pipeline assembly (1) comprises a pipeline member (6) inserted and matched in two arc-shaped clamping grooves (320), and two symmetrical stirring members (7) are inserted and fixed inside the pipeline member (6); The pipeline member (6) comprises a central pipeline (601), and the central pipeline (601) is connected to a conducting pipe (602) on two opposite sides. An arc-shaped clamping block (603) that is snap-fitted to the arc-shaped clamping groove (320) is fixed to the outer peripheral side of the conducting pipe (602), and two symmetrical L-shaped pressing plates (604) are fixed to the bottom of the arc-shaped clamping block (603). The outer bottoms of the two L-shaped pressing plates (604) are fixed with a trapezoidal pressing plate (605) that is slidably matched with the clamping frame (321). The bottom of the trapezoidal pressing plate (605) is chamfered, and one side of the trapezoidal pressing plate (605) is provided with a plugging hole (606) that is plug-fitted with the abutment rod (322).

8. The dust explosion prevention performance testing device based on a limited space according to claim 7 is characterized in that: The outer peripheral side surface of the central pipe (601) is connected to a rectangular cover (607) that is plugged into the detection end of the dust concentration detection instrument (306), and a rectangular sealing plate (608) is fixed to the bottom of the rectangular cover (607); A rectangular column (325) is fixed at the center of the bottom of the sealing cover plate (317), an arc-shaped fixing plate (326) is fixed at one end of the rectangular column (325), and an arc-shaped positioning plate (327) that fits the outer peripheral side surface of the central pipe (601) is fixed to the inner wall of the arc-shaped fixing plate (326).

9. The dust explosion prevention performance testing device based on a limited space according to claim 8, characterized in that: Two symmetrical positioning blocks (609) are fixed to the inner wall of the conducting tube (602) near one end surface, and a rectangular groove (610) is formed on one side of each of the positioning blocks (609). A threaded column (611) is fixed to the bottom of the rectangular groove (610); The stirring member (7) comprises a clamping plate (701) clamped between the two rectangular grooves (610), and two symmetrical positioning holes (702) are formed through one side of the clamping plate (701), and the two positioning holes (702) are respectively plugged into and fitted with the two threaded columns (611); A rotating shaft (703) is rotatably engaged with a central position of one side of the clamping plate (701) via a bearing, a plurality of shaking fans (704) are fixed in a linear array on the peripheral side of the rotating shaft (703), and a plurality of stirring blades (705) are fixed at one end of the rotating shaft (703).

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