Negative pressure dust suppression device for slag discharge port

Abstract

The invention belongs to the technical field of negative pressure dust suppression, and discloses a slag discharge port negative pressure dust suppression device which comprises a negative pressure shell, and a sealing partition plate is fixedly mounted in the middle of the negative pressure shell. The dust filtering bag can be kept in a tight state in a supporting mode, the situation that the filtering effect is affected due to looseness is avoided, the height of each set of air guide barrels can be adjusted by using the lifting adjusting movable frame, the supporting rod is driven to rotate by adjusting rotation through the adjusting screw rod, and the fixing block cannot continue blocking after making contact with the welding rod; meanwhile, the supporting rod cannot continue to rotate, the supporting rod can be driven to move downwards by continuously rotating the opening adjusting knob again, the dust filtering bag can be pushed through the supporting hole disc at the bottom, and the problem that the filtering effect is affected due to loosening and deformation caused by mismatching of the keel and the dust filtering bag can be effectively solved through the mode.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of negative pressure dust suppression, and specifically relates to a slag discharge port negative pressure dust suppression device. BACKGROUND

[0002] A power plant generates a large amount of slag when generating heat, and the slag needs to be transported by a slag transport vehicle. However, dust is generated during the loading and unloading process. The dust not only pollutes the environment, but also affects the health of workers. In order to avoid the dust from the slag door, a negative pressure dust suppression device is usually installed on the other side of the slag chamber. The negative pressure dust suppression device is connected with an industrial fan, so that suction force is generated, negative pressure is generated in the slag chamber, dust is automatically introduced into the inside of the negative pressure dust suppression device, and the dust is separated under the filtration of the filter bag inside, so that the problem of dust can be effectively avoided.

[0003] The filter bag provided with a keel frame is arranged in the negative pressure dust suppression device in the prior art. Since the keel frame and the track are not matched in size or have a gap, the filter bag will be loose under the action of air flow, affecting the filtering effect.

[0004] Therefore, the slag discharge port negative pressure dust suppression device is provided to solve the problems in the background art. SUMMARY

[0005] To solve the problems in the background art, the slag discharge port negative pressure dust suppression device is provided.

[0006] To achieve the above purpose, the technical scheme is provided as follows: a slag discharge port negative pressure dust suppression device, comprising a negative pressure shell, a sealing partition plate is fixedly installed in the middle of the negative pressure shell, two groups of movable racks are movably arranged above the sealing partition plate, four groups of air guide cylinders are fixedly installed on the top of the movable racks, a fixed support is fixedly installed on the inner side of the upper end of the air guide cylinder, an adjusting screw is movably arranged in the middle of the fixed support, two groups of welding rods are fixedly installed at the bottom of the fixed support, the welding rods are located on the two sides of the adjusting screw, a support rod is movably arranged on the outer side of the lower end of the adjusting screw, a splicing sleeve is movably arranged on the front surface of the upper end of the support rod, a splicing ring is movably arranged on the top of the splicing sleeve, a support hole disc is installed at the bottom of the support rod, eight groups of filter bags are movably arranged at the bottom of the inner side of the support hole disc.

[0007] Preferably, four groups of support columns are welded and installed at the bottom of the negative pressure shell, a dust discharge port is installed at the lower end of the negative pressure shell, and an air inlet pipe is fixedly installed on one side of the lower end of the negative pressure shell.

[0008] Preferably, the top of the negative pressure shell is provided with a sealing top cover mounted by bolt structure, and the upper end of the sealing top cover is fixedly provided with an exhaust pipe, and the back of the exhaust pipe is provided with an industrial fan.

[0009] Preferably, the top of the sealing partition plate is provided with a through combined slot, and the front and back top of the sealing partition plate is respectively provided with four sets of limiting plates, and four sets of fixed guide columns are fixedly installed between the two sets of limiting plates, and the two ends of the movable frame are movably arranged outside the fixed guide columns, and the side of the limiting plate close to the movable frame is fixedly provided with a positioning block, and the side surface of the positioning block is provided with a hole, and the middle part of the two ends of the movable frame is provided with a slot with the same shape as the movable frame, and the inner side of the two ends of the movable frame is movably provided with a positioning pin, and the inside of the negative pressure shell is provided with four sets of transverse guide rods, and the transverse guide rods are movably arranged in the middle part of the limiting plate.

[0010] Preferably, the inner wall of the air duct is fixedly provided with two sets of fixed bearings, and the inner side of the fixed bearing is fixedly provided with a rotating ring, and the inner side of the rotating ring is uniformly fixedly provided with four sets of inclined blades, and the bottom of two sets of symmetrical inclined blades is welded with a driving rod.

[0011] Preferably, the top of the adjusting screw is fixedly provided with a perforated adjusting knob, and the top of the perforated adjusting knob is provided with a fan-shaped hole, and the bottom of the perforated adjusting knob is provided with a limiting bearing ring, and the limiting bearing ring is fixedly installed on the top of the fixed support.

[0012] Preferably, the inner side of the upper end of the support rod and the splicing sleeve is provided with a threaded groove, and the outer side of the middle part of the support rod is uniformly provided with a plurality of groups of metal arc-shaped pieces, and four sets of reinforcing angle seats are welded between the support rod and the support hole disc, and the splicing part of the upper end of the support rod is provided with an inclined splicing groove, and the bottom of the splicing sleeve is provided with a splicing block with the same shape, and the splicing block is movably spliced with the inclined splicing groove.

[0013] Preferably, the bottom of the splicing ring is provided with four sets of positioning rods, and the inner side of the splicing ring is movably provided with two sets of locking bolts, and the top of the support rod and the splicing sleeve is provided with four sets of holes and screw grooves, and the positions of the holes and screw grooves correspond to the positions of the positioning rods and the locking bolts, and the back of the upper end of the support rod and the front of the upper end of the splicing sleeve is fixedly provided with a fixed block.

[0014] Preferably, the outer side of the upper end and the lower end of the support rod is fixedly provided with two sets of limiting bearings, and the outer side of the two sets of limiting bearings is fixedly connected with eight sets of close-to-rod, and the middle part of the close-to-rod is fixedly provided with sixteen sets of connecting rods close to the support rod, and the end of the eight sets of connecting rods is fixedly provided with a movable ring, and the movable ring is movably arranged outside the support rod, and the inner side of the two sets of connecting rods is fixedly provided with a vibration rod, and the vibration rod is located inside the metal arc-shaped piece, and the eight sets of close-to-rod is fixedly provided with a spiral reinforcing rib.

[0015] Preferably, the top of the dust filter bag is provided with a combination ring, and the combination ring is located inside the combination groove, and the bottom of the combination ring is provided with a sealing ring.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] By cooperating the adjusting screw, the supporting rod and the supporting hole disc, the dust filter bag can be kept in a tight state by supporting, avoiding the influence of the filtering effect caused by loosening. The height of each group of air ducts can be adjusted by using the lifting adjusting movable frame. The adjusting screw can be rotated by rotating the opening adjusting knob. The spliced sleeve and the supporting rod are in a combined state during rotation, and are fixed by the splicing ring and the locking bolt. The structure at the upper end of the supporting rod remains fixed, and the internal thread groove can be combined with the adjusting screw. The supporting rod is rotated during the rotation of the adjusting screw. Since the fixed support is welded with two fixed welding rod structures at the bottom, the fixed block cannot continue to block after contacting the welding rod, and the supporting rod cannot continue to rotate. Rotating the opening adjusting knob again can move the supporting rod downward, and the dust filter bag can be pushed by the bottom supporting hole disc, so that the side of the dust filter bag is kept in a tight state. In this way, the problem of loosening and deformation caused by the mismatch between the keel and the dust filter bag, which affects the filtering effect, can be effectively avoided.

[0018] By cooperating the metal arc-shaped sheet, the close-fitting rod and the inclined blade, the rotating force is formed by the airflow flowing in the air duct, so that the structure at the bottom is rotated and vibrated to shake off the dust on the surface of the tight dust filter bag. The airflow filtered inside can be guided by the air duct. The two fixed bearings are arranged in the air duct to assist the rotation of the rotating ring. The inclined blade inclined at forty-five degrees is arranged inside the rotating ring. The rising airflow pushes the inclined blade to rotate counterclockwise. The drive rod arranged at the bottom of the inclined blade is arranged at the middle of the two close-fitting rods, so that the close-fitting rod is pushed to rotate along the two limiting bearings arranged by the drive rod during the rotation of the inclined blade. The vibration rod between the connecting rods arranged in the middle will be in close contact with and extrude the metal arc-shaped sheet during rotation. The vibration caused by the deformation and recovery of the arc-shaped sheet. Since the vibration rod will repeat this effect, the vibration will be transmitted to the close-fitting rod. The dust on the surface of the dust filter bag can be shaken off by the vibration of the close-fitting rod during rotation. In cooperation with the operation of the industrial fan, the problem of frequent damage of the pulse jet device and high use cost can be effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0020] Figure 2 Schematic diagram of the cross-sectional structure of the negative pressure shell of the present application;

[0021] Figure 3 Schematic diagram of the cross-sectional structure of the dust filter bag of the present application;

[0022] Figure 4 Schematic diagram of the sealing partition plate structure of the present application;

[0023] Figure 5 Schematic diagram of the cross-sectional structure of the air duct of the present application Figure 2 Enlarged schematic diagram of the structure at point A in the present application;

[0024] Figure 6 Schematic diagram of the cross-sectional structure of the air duct of the present application

[0025] Figure 7 Schematic diagram of the cross-sectional structure of the air duct of the present application Figure 6 Enlarged schematic diagram of the structure at point B in the present application;

[0026] Figure 8 Schematic diagram of the support rod structure of the present application;

[0027] Figure 9 Schematic diagram of the cross-sectional structure of the air duct of the present application Figure 6 Enlarged schematic diagram of the structure at point C in the present application.

[0028] In the figure: 1, negative pressure shell; 101, support column; 102, dust outlet; 103, air inlet pipe; 104, sealing top cover; 105, exhaust pipe; 106, industrial fan; 2, sealing partition plate; 201, combined groove; 202, limiting plate; 203, fixed guide column; 204, positioning block; 205, movable frame; 206, positioning pin; 207, transverse guide rod; 3, air duct; 301, fixed support; 302, welded rod; 303, fixed bearing; 304, rotating ring; 305, inclined blade; 306, drive rod; 4, adjusting screw; 401, limiting bearing ring; 402, open hole adjusting knob; 5, support rod; 501, inclined splicing groove; 502, threaded groove; 503, splicing sleeve; 504, fixed block; 505, splicing ring; 506, positioning rod; 507, locking bolt; 508, metal arc-shaped piece; 509, support hole disc; 510, reinforcing corner seat; 6, close-fitting rod; 601, movable ring; 602, connecting rod; 603, shock rod; 604, spiral reinforcing rib; 605, limiting bearing; 7, dust filter bag; 701, combined ring; 702, sealing ring. DETAILED DESCRIPTION

[0029] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0030] As shown in Figures 1 to 9 The present application provides a slag outlet negative pressure dust suppression device, which comprises a negative pressure shell 1, a sealing partition plate 2 fixedly installed in the middle of the negative pressure shell 1, two groups of movable racks 205 movably arranged above the sealing partition plate 2, four groups of air ducts 3 fixedly installed at the top of the movable racks 205, fixed supports 301 fixedly installed on the inner side of the upper end of the air ducts 3, an adjusting screw 4 movably arranged in the middle of the fixed supports 301, two groups of welding rods 302 fixedly installed at the bottom of the fixed supports 301 and located on both sides of the adjusting screw 4, a support rod 5 movably arranged on the outer side of the lower end of the adjusting screw 4, a splicing sleeve 503 movably spliced on the front surface of the upper end of the support rod 5, a splicing ring 505 movably installed at the top of the splicing sleeve 503, a support hole disc 509 installed at the bottom of the support rod 5, eight groups of dust filtering bags 7 movably arranged at the bottom of the inner side of the support hole disc 509.

[0031] By using the movable racks 205 with lifting adjustment, the height of each group of air ducts 3 can be adjusted, and by rotating the opening adjusting knob 402, the adjusting screw 4 can be rotated, and in the process of rotation, the splicing sleeve 503 and the support rod 5 are in a combined state, and the splicing ring 505 and the locking bolt 507 are used for fixing, the structure of the upper end of the support rod 5 remains fixed, the internal thread groove 502 can be combined with the adjusting screw 4, and the adjusting screw 4 will rotate the support rod 5 in the process of rotation, and since the fixed supports 301 are welded with two groups of fixed welding rods 302 at the bottom, the fixed block 504 cannot continue to block after contacting the welding rods 302, and the support rod 5 cannot continue to rotate, and rotating the opening adjusting knob 402 again can drive the support rod 5 to move downward, and the dust filtering bags 7 can be pushed by the bottom support hole disc 509, so that the side of the dust filtering bags 7 is in a tight state, and the problem that the keel and the dust filtering bags 7 do not match to cause loosening and deformation and affect the filtering effect can be effectively avoided

[0032] As shown in Figure 1 and Figure 2 The bottom of the negative pressure shell 1 is welded with four groups of support columns 101, the lower end of the negative pressure shell 1 is provided with a dust discharge port 102, and the lower end of the negative pressure shell 1 is fixedly provided with an air inlet pipe 103.

[0033] The top of the negative pressure shell 1 is provided with a sealing top cover 104 through a bolt structure, and the upper end of the sealing top cover 104 is fixedly provided with an exhaust pipe 105, and the back of the exhaust pipe 105 is provided with an industrial fan 106.

[0034] By adopting the above scheme: the support column 101 can provide support for the overall structure of the top, and the dust generated inside can be collected by cooperating with the dust outlet 102 and the external collection device, the air inlet pipe 103 needs to be connected with the slag chamber, the negative pressure shell 1 can be closed by using the sealing top cover 104 of the top, the internal structure can be adjusted after the sealing top cover 104 is disassembled, and the filter bag 7 structure is convenient to disassemble and install, the industrial fan 106 of the top generates suction force through high-speed rotation, so that the filtered air in the slag chamber is sucked into and discharged from the exhaust pipe 105, and the air in the slag chamber is guided into the negative pressure shell 1.

[0035] As shown in Figure 4 and Figure 5 , the top of the sealing partition plate 2 is provided with a through combination groove 201, and the front and back of the sealing partition plate 2 are respectively provided with four groups of limiting plates 202, four groups of fixed guide columns 203 are fixedly installed between the two groups of limiting plates 202, and the two ends of the movable frame 205 are movably arranged outside the fixed guide columns 203. The side of the limiting plate 202 close to the movable frame 205 is fixedly provided with a positioning block 204, and the side surface of the positioning block 204 is provided with a hole, and the middle part of the two ends of the movable frame 205 is provided with a slot with the same shape as the movable frame 205. The inner side of the two ends of the movable frame 205 movably arranged a positioning pin 206, and the inside of the negative pressure shell 1 is provided with four groups of horizontal guide rods 207, and the horizontal guide rods 207 are movably arranged in the middle of the limiting plate 202.

[0036] By adopting the above scheme: the combination groove 201 is used to provide the installation position for the combination ring 701, and the combination can keep a fixed state, the sealing partition plate 2 can separate the upper and lower areas inside the negative pressure shell 1, the limiting plate 202 can be used to fix the structure inside to limit, the fixed guide column 203 can keep the movable frame 205 in the state of up and down movement adjustment, the positioning block 204 can limit the end of the movable frame 205, and the positioning pin 206 can be locked, which is convenient for the worker to adjust the position of the movable frame 205, and the horizontal guide rod 207 can limit and guide the horizontal stable adjustment of the limiting plate 202.

[0037] As shown in Figures 6-8 , the inner wall of the air guide cylinder 3 is fixedly provided with two groups of fixed bearings 303, and the inner side of the fixed bearing 303 is fixedly provided with a rotating ring 304, and the inner side of the rotating ring 304 is uniformly fixedly provided with four groups of inclined blades 305, and the bottom of two groups of symmetrical inclined blades 305 is welded with a driving rod 306.

[0038] The top of the adjusting screw 4 is fixedly installed with an open hole adjusting knob 402, and the top of the open hole adjusting knob 402 is provided with a sector hole, and the bottom of the open hole adjusting knob 402 is installed with a limiting bearing ring 401, and the limiting bearing ring 401 is fixedly installed on the top of the fixed support 301.

[0039] The upper end of the support rod 5 and the inner side of the splicing sleeve 503 are provided with a threaded groove 502, and the outer side of the middle part of the support rod 5 is uniformly installed with a plurality of groups of metal arc-shaped pieces 508, and four groups of reinforcing angle seats 510 are welded and installed between the support rod 5 and the support hole disc 509, and the splicing part of the upper end of the support rod 5 is provided with an inclined splicing groove 501, and the bottom of the splicing sleeve 503 is installed with a splicing block of the same shape, and the splicing block is movably spliced with the inclined splicing groove 501.

[0040] The bottom of the splicing ring 505 is installed with four groups of positioning rods 506, and the inner side of the splicing ring 505 is movably provided with two groups of locking bolts 507, and the top of the support rod 5 and the splicing sleeve 503 are provided with four groups of holes and screw grooves, and the positions of the holes and screw grooves correspond to the positions of the positioning rods 506 and the locking bolts 507, and the back of the upper end of the support rod 5 and the front of the upper end of the splicing sleeve 503 are fixedly installed with a fixed block 504.

[0041] By using the above scheme: the fixed bearing 303 is used to limit the rotation of the inner rotating ring 304, so that the rotating ring 304 can stably rotate at high speed along the inner side, and the inclined blade 305 can be driven to rotate by the airflow flowing in the airflow guiding cylinder 3, and the rotation can synchronously control the rotation adjustment of the bottom driving rod 306, the open hole adjusting knob 402 is used to adjust the structure of the bottom adjusting screw 4 by rotating, the top opening hole facilitates the staff to pass through the tool to contact the locking bolt 507, facilitating the disassembly and installation of the locking bolt 507, and the limiting bearing ring 401 can assist the rotation of the open hole adjusting knob 402, the threaded groove 502 can be matched with the adjusting screw 4, the metal arc-shaped piece 508 has elasticity, and vibration will be generated when it is extruded and deformed and then reset, the vibration will be conducted to drive the outer side of the dust removal device to perform dust removal treatment on the dust filter bag 7, the reinforcing angle seat 510 can increase the stability of the support rod 5 and the support hole disc 509, the positioning rod 506 can be positioned by being inserted into the hole at the top of the support rod 5, and the stability of splicing can be maintained by rotating and locking the locking bolt 507, and the bottom of the splicing sleeve 503 is installed with a special-shaped block of the same shape as the inclined splicing groove 501, which can further increase the stability of splicing after being inserted, and the fixed block 504 can cooperate with the limiting rod 302 to limit.

[0042] As Figure 2 , Figure 6 and Figure 9As shown, the outer side of the upper end and the lower end of the support rod 5 is fixedly provided with two groups of limiting bearings 605, the outer side of the two groups of limiting bearings 605 is fixedly connected with eight groups of close-to-rod 6, and the middle of the close-to-rod 6 is fixedly provided with sixteen groups of connecting rods 602 on the side close to the support rod 5, the end of eight groups of connecting rods 602 is fixedly provided with a movable ring 601, the movable ring 601 is movably arranged on the outer side of the support rod 5, the inner side of the two groups of connecting rods 602 is fixedly provided with a vibration rod 603, and the vibration rod 603 is located on the inner side of the metal arc-shaped sheet 508, and the eight groups of close-to-rod 6 is fixedly provided with a spiral reinforcing rib 604.

[0043] The top of the dust filter bag 7 is provided with a combination ring 701, and the combination ring 701 is located on the inner side of the combination groove 201, and the bottom of the combination ring 701 is provided with a sealing ring 702.

[0044] The above scheme has the following advantages: the limiting bearing 605 can assist the close-to-rod 6 on the outer side to rotate and adjust along the support rod 5, the connecting rod 602 can be used to connect the movable ring 601 and the close-to-rod 6 on the inner side, the spiral reinforcing rib 604 combined and installed can effectively ensure the strength of the device structure, avoid the problem of deformation caused by the pushing force of the driving rod 306, the vibration rod 603 can contact and extrude the metal arc-shaped sheet 508 to generate vibration by elastic deformation, and the combination of the combination ring 701 and the combination groove 201 can effectively increase the sealing performance by extruding the sealing ring 702.

[0045] The working principle and use process of the present application: first, the device is assembled, the controller is used to control the industrial fan 106, the industrial fan 106 is used to generate suction to guide the dust and gas in the slag chamber into the inside of the negative pressure shell 1, after entering, the dust will be filtered on the surface of the dust filter bag 7, then the filtered airflow will rise through the air duct 3, in the process of rising, the airflow will push the inclined blade 305 and the rotating ring 304 to rotate counterclockwise, at the same time, the driving rod 306 at the bottom is between the two groups of close rods 6, rotation will drive the close rod 6 and the inside structure to rotate, in the process of rotation, the vibration rod 603 will extrude the metal arc-shaped sheet 508 to deform, thereby generating vibration, which will be transmitted to the close rod 6, so as to continuously vibrate the surface of the dust filter bag 7 by the close rod 6 to avoid dust adhesion and blockage, when it is necessary to replace the dust filter bag 7, the top sealing top cover 104 is disassembled, then the adjusting knob 402 of each group of holes is rotated to drive the adjusting screw 4 to rotate, the support rod 5 is separated from the adjusting screw 4 by threads, after separation, the positioning pin 206 is removed and the movable frame 205 structure is lifted, and the positioning pin 206 is inserted again to keep the movable frame 205 close to the upper limit plate 202, then the limit plate 202 is adjusted in a transverse manner to expose the bottom combined ring 701 and the dust filter bag 7, the inside support rod 5 and the dust filter bag 7 are taken out as a whole and replaced with a new dust filter bag 7.

[0046] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0047] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application is defined with respect to the appended claims.

Claims

1. A dust suppression device for a slag outlet negative pressure, comprising a negative pressure shell (1), characterized in that: A sealing partition (2) is fixedly installed in the middle of the negative pressure shell (1), and two sets of movable frames (205) are movably arranged above the sealing partition (2). Four sets of air guide tubes (3) are fixedly installed on the top of the movable frames (205), and a fixed bracket (301) is fixedly installed on the inner side of the upper end of the air guide tubes (3). An adjusting screw (4) is movably arranged in the middle of the fixed bracket (301), and two sets of welding rods (302) are fixedly installed at the bottom of the fixed bracket (301). Located on both sides of the adjusting screw (4), the outer side of the lower end of the adjusting screw (4) is movably provided with a support rod (5), and the front of the upper end of the support rod (5) is movably spliced ​​with a splicing sleeve (503). The top of the splicing sleeve (503) is movably installed with a splicing ring (505). The bottom of the support rod (5) is installed with a support hole plate (509). The bottom of the sealing partition (2) is movably provided with eight sets of dust filter bags (7), and the support hole plate (509) is movably located at the bottom of the inner side of the dust filter bags (7).

2. The negative pressure dust suppression device for slag discharge port according to claim 1, characterized in that: The bottom of the negative pressure housing (1) is welded with four sets of support columns (101), and the lower end of the negative pressure housing (1) is equipped with a dust discharge port (102). An air inlet pipe (103) is fixedly installed on one side of the lower end of the negative pressure housing (1).

3. The negative pressure dust suppression device for slag discharge port according to claim 1, characterized in that: The top of the negative pressure housing (1) is fitted with a sealing top cover (104) by bolts, and an exhaust pipe (105) is fixedly installed on the upper end of the sealing top cover (104). An industrial fan (106) is provided on the back of the exhaust pipe (105).

4. The negative pressure dust suppression device for slag discharge outlet according to claim 1, characterized in that: The top of the sealing partition (2) is provided with a through-combination groove (201), and four sets of limiting plates (202) are respectively provided on the top of the front and back sides of the sealing partition (2). Four sets of fixed guide posts (203) are fixedly installed between the two sets of limiting plates (202). The two ends of the movable frame (205) are movably arranged on the outside of the fixed guide posts (203). The side of the limiting plate (202) near the movable frame (205) is fixedly installed with a positioning block (204), and the side of the positioning block (204) is provided with a through hole. The middle of the two ends of the movable frame (205) is provided with a slot of the same shape as the movable frame (205). The inner side of the two ends of the movable frame (205) is movably provided with a positioning pin (206). The inside of the negative pressure shell (1) is provided with four sets of transverse guide rods (207), and the transverse guide rods (207) are movably arranged in the middle of the limiting plate (202).

5. The negative pressure dust suppression device for slag discharge outlet according to claim 1, characterized in that: The inner wall of the air guide tube (3) is fixedly installed with two sets of fixed bearings (303), and a rotating ring (304) is fixedly installed on the inner side of the fixed bearings (303). Four sets of inclined blades (305) are evenly fixedly installed on the inner side of the rotating ring (304), and a drive rod (306) is welded to the bottom of the two sets of symmetrical inclined blades (305).

6. The negative pressure dust suppression device for slag discharge outlet according to claim 1, characterized in that: The top of the adjusting screw (4) is fixedly installed with an opening adjustment knob (402), and the top of the opening adjustment knob (402) is provided with a fan-shaped hole. The bottom of the opening adjustment knob (402) is installed with a limit bearing ring (401), and the limit bearing ring (401) is fixedly installed on the top of the fixed bracket (301).

7. The negative pressure dust suppression device for slag discharge outlet according to claim 1, characterized in that: The upper end of the support rod (5) and the inner side of the splicing sleeve (503) are provided with threaded grooves (502), and several sets of metal arc-shaped pieces (508) are evenly installed on the outer side of the middle part of the support rod (5). Four sets of reinforcing corner seats (510) are welded and installed between the support rod (5) and the support hole plate (509). The splicing part at the upper end of the support rod (5) is provided with a slanted splicing groove (501). The bottom of the splicing sleeve (503) is provided with a splicing block of the same shape. The splicing block is movably spliced ​​with the slanted splicing groove (501).

8. The negative pressure dust suppression device for slag discharge outlet according to claim 1, characterized in that: The bottom of the splicing ring (505) is equipped with four sets of positioning rods (506), and two sets of locking bolts (507) are movably arranged on the inner side of the splicing ring (505). The top of the support rod (5) and the splicing sleeve (503) are provided with four sets of holes and screw grooves, and the positions of the holes and screw grooves correspond to the positioning rods (506) and locking bolts (507). Fixing blocks (504) are fixedly installed on the back of the upper end of the support rod (5) and the front of the upper end of the splicing sleeve (503).

9. The negative pressure dust suppression device for slag discharge outlet according to claim 1, characterized in that: Two sets of limiting bearings (605) are fixedly installed on the outer sides of the upper and lower ends of the support rod (5). Eight sets of close-fitting rods (6) are fixedly connected to the outer sides of the two sets of limiting bearings (605). Sixteen sets of connecting rods (602) are fixedly installed on the side of the close-fitting rods (6) near the support rod (5). The ends of the eight sets of connecting rods (602) are fixedly installed with movable rings (601), and the movable rings (601) are movably arranged on the outer side of the support rod (5). Vibration rods (603) are fixedly installed on the inner side of the two sets of connecting rods (602), and the vibration rods (603) are located on the inner side of the metal arc plate (508). Spiral reinforcing ribs (604) are fixedly installed between the eight sets of close-fitting rods (6).

10. A negative pressure dust suppression device for slag discharge outlet according to claim 1, characterized in that: The dust filter bag (7) is equipped with a combination ring (701) at the top, and the combination ring (701) is located inside the combination groove (201). A sealing ring (702) is installed at the bottom of the combination ring (701).

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