Collecting device for treating dust during production of protective clothing

Abstract

The invention discloses a dust collecting device for producing protective clothing and treating dust, and relates to the technical field of dust collecting devices, the dust collecting device comprises a pre-dust-collecting chamber shell and a second combined flow guiding piece, the upper end of the left side of the pre-dust-collecting chamber shell is connected with an air inlet pipeline, and the lower end of the right side of the pre-dust-collecting chamber shell is connected with an air outlet pipeline; the second combined flow guide part is arranged between the air inlet pipeline and the air outlet pipeline, and the second combined flow guide part is composed of a rectangular outer frame, four second flow guide plates, an angle and distance adjusting mechanism and the like; the dust collector has multiple advantages, the burden of the filter bag can be relieved through the dust pre-collection chamber shell, the first combined flow guide part can flexibly change the included angle between the first flow guide plate and the center axis of the air inlet pipeline by means of the first electric push cylinder according to the flow and concentration of dust-containing air, and the second combined flow guide part can flexibly change the included angle between the first flow guide plate and the center axis of the air inlet pipeline according to the size and concentration of dust particles. The inclination angles of the four second flow guide plates are synchronously adjusted through the angle adjusting mechanism, and the distance between the second flow guide plates is adjusted in a self-adaptive mode through the distance adjusting mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of dust collecting devices, and in particular to a dust collecting device used for processing dust in the production of protective clothing. Background Art

[0002] In the process of industrial production of protective clothing, a large amount of dust is generated. When traditional bag dust collectors handle this dust, the dust-containing gas directly enters the dust collector. Its working process is usually that the dust-containing gas enters the cavity of the bag dust collector at a certain flow rate under the suction of the fan, and then contacts the surface of the bag. The dust is captured by the bag's interception and adsorption, and the purified gas is discharged through the bag.

[0003] However, this traditional method has many shortcomings. Since the air inlet of the bag filter is generally directly connected to the inside of the protective clothing processing workshop through a circular steel pipe, the large and small particle impurities in the dust-containing gas inhaled in the protective clothing processing workshop are not separated. A large amount of dust of different particle sizes impacts the bag at the same time, causing the bag to bear a large filtering pressure. In particular, large particles of dust are easy to accumulate quickly on the surface of the bag due to their large mass and strong inertia, which not only shortens the cleaning cycle of the bag, but also reduces the service life of the bag due to frequent cleaning operations, increasing equipment maintenance costs and downtime. At the same time, the uneven deposition of large particles of dust on the surface of the bag may cause local blockage of the air flow channel, resulting in uneven gas distribution, thereby reducing the overall filtration efficiency, and it is difficult to stably and efficiently meet the stringent requirements for dust treatment in the production of protective clothing. This paper uses gravity to pre-separate most of the large particles of dust in the dust-containing gas, which can effectively alleviate many problems faced by subsequent bag filters, significantly improve the performance and reliability of the entire dust treatment system, and better meet the dual needs of modern industrial production for environmental protection and efficient production. In view of this, this paper proposes a collection device for processing dust in the production of protective clothing. Summary of the invention

[0004] The main purpose of the present invention is to provide a dust collection device for producing protective clothing, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A dust collection device for processing dust in the production of protective clothing, comprising: a pre-dust collection chamber shell and a second combined flow guide; The upper left end of the pre-dust chamber shell is connected to an air inlet duct, the lower right end of the pre-dust chamber shell is connected to an air outlet duct, the lower end of the pre-dust chamber shell includes a dust collecting hopper with a funnel shape, the dust collecting hopper is arranged below the air outlet duct, and the second combined guide member is arranged between the air inlet duct and the air outlet duct in the pre-dust chamber shell; The second combined flow guide member is composed of a rectangular outer frame, four second flow guide plates, two angle adjustment mechanisms and two spacing adjustment mechanisms. The four second flow guide plates are equidistantly arranged in parallel. The second flow guide plates are gradually inclined from top to bottom and close to the air inlet duct in the pre-dust chamber shell. Both ends of each second flow guide plate are symmetrically connected with side plates. The side plates at both ends of the first second flow guide plate on the far left are fixedly connected to the inner wall of the rectangular outer frame. The outer sides of the side plates at both ends of the remaining three second flow guide plates are horizontally slidably connected to the front and rear inner walls of the rectangular outer frame. Cylinders are fixedly installed on both sides of the lower ends of the four second flow guide plates. Each second flow guide plate is rotatably connected through two cylinders and the lower sides of two side plates on both sides of the second flow guide plate. The two angle adjustment mechanisms are symmetrically arranged on both sides of the four second guide plates, and the angle adjustment mechanism is composed of a guide bar frame, a second electric push cylinder, four rotating cylinders and four arc-shaped guide holes. The four arc-shaped guide holes in the second combined guide member are respectively arranged at the upper ends of the four side plates on the same side, and the centers of the arc-shaped guide holes coincide with the center axis of the circle in the cylinder, the four rotating cylinders are respectively and equidistantly rolled and installed in the four arc-shaped guide holes, and one end of the four rotating cylinders is respectively fixedly connected to the middle end of one side of the four second guide plates, and the four rotating cylinders are horizontally rolled and installed in the inner frame of the guide bar frame, the guide bar frame is horizontally arranged, the second electric push cylinder is vertically arranged, the second push rod in the second electric push cylinder is vertically arranged downward, the second outer cylinder in the second electric push cylinder is fixedly connected to the top end of the rectangular outer frame, and the end of the second push rod in the second electric push cylinder is vertically fixedly connected to the upper end of the rectangular outer frame; The two spacing adjustment mechanisms are symmetrically arranged on both sides of the four second guide plates, and the spacing adjustment mechanism is composed of six hinge rods and a third electric push cylinder, and vertical holes are arranged on the side plates, and the six hinge rods are divided into a group of two, with a total of three groups, and the two hinge rods in each group are cross-rotatably connected in an X shape, and the lower ends of the six hinge rods are rotatably installed on the lower ends of the four side plates, and the upper ends of the six hinge rods are respectively rolling installed in the four vertical holes on the upper ends of the four side plates, and the two hinge rod rolling connections at the upper ends of the two middle side plates on the same side coincide with each other at one point, and the two hinge rod rotation connections at the lower ends of the two middle side plates on the same side also coincide with each other at one point, and the third electric push cylinder is vertically and parallelly installed directly above the first vertical hole on the left side, and the third outer cylinder of the third electric push cylinder is fixedly connected to the upper end of the rectangular outer frame, and the third push rod in the third electric push cylinder is arranged downward, and the end of the third push rod is rotationally connected to the first hinge rod at the upper end on the left side.

[0006] Preferably, the pre-dust chamber casing also includes a cover plate, an upper tube, a middle tube, a lower tube and a supporting leg frame, and the cover plate, the upper tube, the middle tube, the lower tube, the dust collecting hopper and the supporting leg frame are coaxially fixedly connected in sequence from top to bottom, and the ash discharge port at the lower end of the dust collecting hopper is fixedly connected with a star-shaped discharger.

[0007] Preferably, the first combined flow guide member is installed in both the upper tube and the lower tube, the second combined flow guide member is arranged in the middle square tube, the first combined flow guide member is composed of a plurality of mutually parallel first flow guide plates, the angle range between the first flow guide plate and the central axis of the air intake duct is - degree, and a plurality of the first flow guide plates are vertically arranged and equidistantly arranged on the same horizontal plane, and the top ends of a plurality of the first flow guide plates are connected with mutually parallel fixed plates and movable plates.

[0008] Preferably, the fixed plate is arranged on a side away from the windward surface of the first guide plate, one side of the first guide plate is rotatably connected to the fixed plate through a first rotating shaft, the movable plate is arranged in the middle of the top of the first guide plate, and the middle top of the first guide plate is rotatably connected to the movable plate through a second rotating shaft, the fixed plate and the movable plate respectively form a deformable parallelogram structure with the two first guide plates, a first electric push cylinder is connected between one end of the fixed plate and the movable plate, one end of the first outer cylinder in the first electric push cylinder is rotatably connected to one end of the fixed plate, and the end of the first push rod in the first electric push cylinder is rotatably connected to one end of the movable plate.

[0009] Preferably, a dust monitor for real-time monitoring of gas flow and dust concentration is fixedly installed in the air outlet pipe, and the dust monitor is connected to a programmable controller via a wire, and the programmable controller is connected to the first electric push cylinder, the second electric push cylinder, and the third electric push cylinder via a wire.

[0010] Preferably, a tarpaulin made of soft material is provided for the closed connection between the right side of the last of the second guide plates on the right side and the right inner wall of the rectangular outer frame.

[0011] Preferably, guide rods are vertically fixedly connected to both sides of the upper part of the rectangular outer frame, and guide cylinders are telescopically connected to the outer peripheries of the upper ends of the two guide rods, and the guide cylinders are fixedly connected to the inner wall of the rectangular outer frame.

[0012] Preferably, an inclined plate in an inclined state is fixedly installed on the right side of the first combined flow guide member in the upper tube.

[0013] Preferably, a first streamlined shape is provided on a windward side of the first guide plate, and a second streamlined shape is provided on an upper side of the second guide plate.

[0014] Preferably, the size of the air outlet of the air outlet pipe is 0.8-0.9 times the area of ​​the air inlet of the air inlet pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Efficient pre-dust removal and filter bag protection: A pre-dust chamber shell is added at the air inlet of the dust collector. The dust-laden gas enters it first, and gravity is used to make most of the large dust particles settle naturally, effectively reducing the filtration burden of the subsequent bag filter bags, extending the service life of the filter bags, and at the same time improving the overall filtration efficiency and enhancing the stability and reliability of the dust treatment system.

[0016] 2. Precise flow guidance and intelligent adjustment: 2.1. The first combined guide piece can flexibly change the angle between the first guide plate and the central axis of the air intake pipe according to the flow rate and concentration of the dust-containing gas with the help of the first electric push cylinder. When the flow rate and concentration are low, the angle is reduced to extend the residence time and enhance the sedimentation effect. When the flow rate and concentration are high, the angle is increased to speed up the gas passage and prevent dust recoil.

[0017] 2.2. The second combined guide member can synchronously adjust the inclination angle of the four second guide plates through the angle adjustment mechanism according to the size and concentration of the dust particles, and adaptively adjust the spacing of the second guide plates by using the spacing adjustment mechanism. When the dust is large and the concentration is high, the spacing is increased to reduce the airflow resistance, and when the dust is small and the concentration is low, the spacing is reduced to increase the number of contacts, which greatly improves the dust processing capacity and dust removal efficiency under different working conditions, and the programmable controller is intelligently controlled according to the dust monitor data to achieve automatic optimization of the operating status of the device.

[0018] 3. Structural synergy and efficiency advantages: The multi-layer structure of the pre-dust chamber shell and the internal guides of each layer work together to achieve multi-stage and multi-mode treatment of dust-containing gases. Compared with similar devices with traditional single-layer or simple cylindrical structures, it has excellent dust collection efficiency and adaptability, and can better cope with dust treatment needs in complex and changing production environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is an exploded view of the present invention; Figure 3 is a cross-sectional view of the present invention; Figure 4 It is a schematic diagram of the structure of the first combined flow guide member at the upper end of the present invention; Figure 5 It is a schematic diagram of the structure of the first combined flow guide member at the lower end of the present invention; Figure 6is a schematic structural diagram of the second combined flow guide member in the present invention; Figure 7 is an exploded view of the second combined flow guide member of the present invention; Figure 8 It is a structural schematic diagram of the angle adjustment mechanism and the spacing adjustment mechanism in the present invention; Fig. 9 It is a partial enlarged view of the elliptical circle A in the present invention; Fig.10 It is a partial enlarged view of the dotted circle B in the present invention.

[0020] In the figure: 1. pre-dust chamber shell; 11. cover plate; 12. upper tube; 13. middle tube; 14. lower tube; 15. dust collecting bucket; 16. support leg frame; 17. air inlet duct; 18. air outlet duct; 2. star-shaped discharger; 3. first combined guide member; 31. first guide plate; 32. fixed plate; 33. first electric push cylinder; 34. movable plate; 35. first streamline shape; 4. inclined plate; 5. second combined guide member; 51. rectangular shaped outer frame; 52, second guide plate; 53, second streamlined shape; 54, tarpaulin; 55, side plate; 56, cylinder; 57, angle adjustment mechanism; 571, guide cylinder; 572, guide rod; 573, second electric push cylinder; 574, guide bar frame; 575, rotating cylinder; 576, arc-shaped guide hole; 58, spacing adjustment mechanism; 581, hinge rod; 582, round block; 583, vertical hole; 584, third electric push cylinder; 59, limit rod. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figure 1-Figure 10 As shown, a dust collection device for processing dust in the production of protective clothing includes a pre-dust collection chamber shell 1 and a first combined flow guide member 3 and two second combined flow guide members 5 inside.

[0023] refer to Figure 1 , Figure 2 and Figure 3 The pre-dust chamber housing 1 is formed by coaxially fixed connection of a cover plate 11, an upper tube 12, a middle tube 13, a lower tube 14, and a dust collecting bucket 15 from top to bottom. The cross-sections of the cover plate 11, the upper tube 12, the middle tube 13, and the lower tube 14 are square, each with a side length of 200 mm. They are made of carbon steel with a thickness of 3-5 mm. The inner walls of the cover plate 11, the upper tube 12, the middle tube 13, and the lower tube 14 are all painted with a layer of anti-corrosion paint. The dust collecting hopper 15 is funnel-shaped, and the cone angle around the dust collecting hopper 15 is 45-60 degrees. A support leg frame 16 is fixedly installed below the dust collecting hopper 15. The bottom dust discharge port of the dust collecting hopper 15 is connected to the star-shaped discharger 2 for discharging the collected dust.

[0024] refer to Figure 1 , Figure 2 and Figure 3 The left side of the cylinder 12 above the top of the pre-dust chamber housing 1 is fixedly connected with an air intake duct 17. The inlet of the air intake duct 17 is connected to the protective clothing processing workshop using a round steel pipe. The size of the air intake duct 17 is determined according to the air volume and wind speed of the fan in the bag dust collector. Generally, the wind speed of the bag dust collector is controlled at 10-15m / s. For example, the air volume of the fan of the bag dust collector is 10000m 3 / h, the air inlet area can be designed to be 0.15-0.2m 2 Around, to ensure that the dust-laden gas smoothly enters and is evenly distributed in the pre-dust chamber housing 1; An outlet pipe 18 is fixedly connected to the right side of the cylinder 14 below the lower end of the pre-dust chamber shell 1, and the outlet of the outlet pipe 18 is connected to the air inlet of the bag dust collector. The outlet size of the outlet pipe 18 is slightly smaller than the inlet size of the inlet pipe 17, and the outlet size of the outlet pipe 18 is approximately 0.8-0.9 times the inlet area of ​​the inlet pipe 17, so that the gas flow rate in the pre-dust chamber shell is slowed down to facilitate dust sedimentation, while ensuring that the gas flows smoothly to the bag dust collector body.

[0025] refer to Figure 5 and Figure 6 , the upper tube 12 and the lower tube 14 are both equipped with a first combined guide member 3, which is composed of a plurality of mutually parallel first guide plates 31, which are vertically arranged and equidistantly arranged on the same horizontal plane, and the angle between the first guide plate 31 and the central axis of the air intake duct 17 is 20-45 degrees, and the spacing between two adjacent first guide plates 31 is 50 mm, and the top of the first guide plate 31 is connected with a fixed plate 32 and a movable plate 34, that is, the angle between the first guide plate 31 and the fixed plate 32 is 45-70 degrees, and the fixed plate 32 is rotatably connected to the first guide plate 31 through a first rotating shaft at the upper end away from the windward surface, and the movable plate 34 is rotatably connected to the first guide plate 31 through a second rotating shaft at the upper middle part of the top, so that a deformable parallelogram structure is formed between every two first guide plates 31, the fixed plate 32 and the movable plate 34; One end of the fixed plate 32 and the movable plate 34 are connected to the first electric push cylinder 33, the first outer cylinder in the first electric push cylinder 33 is rotatably connected to the fixed plate 32, the end of the first push rod in the first electric push cylinder 33 is rotatably connected to the movable plate 34, and the extension and contraction of the first electric push cylinder 33 can change the angle between the first guide plate 31 and the central axis of the air intake pipe 17, so that when the flow rate and concentration are low, the angle between the first guide plate 31 and the central axis of the air intake pipe 17 can be reduced, such as 20-30 degrees, to extend the residence time and improve the sedimentation effect. When the flow rate and concentration are high, the angle between the first guide plate 31 and the central axis of the air intake pipe 17 can be increased, such as 30-45 degrees, to speed up the gas passage speed and prevent dust recoil.

[0026] The windward side of the first guide plate 31 has a first streamlined shape 35 and is coated with polytetrafluoroethylene. The first guide plate 31 is made of a new type of aluminum alloy composite material with a thickness of 2-3 mm and a self-cleaning function to reduce dust adhesion on the outer surface of the first guide plate 31.

[0027] refer to Figure 4 The first streamlined shape 35 of the first guide plates 31 in the first combined guide member 3 at the upper end is close to the upper tube 12 and connected to the side of the intake duct 17, and the first guide plates 31 and the intake air in the intake duct 17 intersect with each other. At the same time, an inclined plate 4 is arranged on the right side of the first guide plate 31 to limit the rightward flow distance of the gas in the intake duct 17. The upper fixed plate 32 and the inclined plate 4 are fixedly connected to the upper tube 12.

[0028] refer to Figure 5 Several first guide plates 31 in the first combined guide member 3 at the lower end are close to the side of the air outlet pipe 18 on the lower tube 14, the first streamlined shape 35 is away from the air outlet pipe 18, the first guide plates 31 intersect with the air outlet path in the air outlet pipe 18, and the fixed plate 32 at the lower end is fixedly connected to the lower tube 14.

[0029] refer to Figure 2 and Figure 6 A second combined flow guide member 5 is installed in the middle tube 13.

[0030] refer to Figure 6 and Figure 7The second combined guide member 5 is composed of a rectangular outer frame 51 and four second guide plates 52. The four second guide plates 52 are equidistantly arranged in parallel. The spacing between two adjacent second guide plates 52 is in the range of 30-50 mm. The second guide plates 52 are arranged horizontally front and back. The intersection angle between the second guide plate 52 and the central axis of the air intake duct 17 is in the range of 20-45 degrees. The top of the second guide plate 52 is the windward end, and the upper side of the second guide plate 52 is provided with a second streamlined shape 53. The second guide plate 52 gradually tilts from top to bottom and approaches the air intake duct 17 in the upper tube 12. Cylinders 56 are fixedly installed on both sides of the lower ends of the four second guide plates 52. The four second guide plates 52 are rotatably connected to the lower sides of the side plates 55 on both sides through two cylinders 56.

[0031] refer to Figure 7 and Figure 8 , each second guide plate 52 is symmetrically connected with side plates 55 at both ends, the two side plates 55 at both ends of the first second guide plate 52 on the left are fixedly connected to the front and rear inner walls of the rectangular outer frame 51, and the two side plates 55 at both ends of the remaining three second guide plates 52 are respectively slidably connected to the front and rear inner walls of the rectangular outer frame 51 left and right, the lower end of the first second guide plate 52 is 20 mm away from the left inner wall of the rectangular outer frame 51, and the right side of the last second guide plate 52 on the right is closed and connected to the right inner wall of the rectangular outer frame 51 by a tarpaulin 54, and the tarpaulin 54 is used to close the right side air path of the rectangular outer frame 51, and a fixedly connected limit rod 59 is provided on the inner side of the lower edge of the rectangular outer frame 51, and the lower ends of the eight side plates 55 are respectively slidably mounted on the two limit rods 59.

[0032] refer to Figure 8 and Fig. 9The second combined guide member 5 also includes two angle adjustment mechanisms 57, which are composed of a guide bar frame 574, two guide cylinders 571, two guide rods 572, a second electric push cylinder 573, four rotating cylinders 575 and four arc-shaped guide holes 576. The center of the arc-shaped guide hole 576 is on the axis of the center of the cylinder 56. The four arc-shaped guide holes 576 are respectively arranged at the top of the four side plates 55 on the same side. The four rotating cylinders 575 are equidistantly rolled and installed in the four arc-shaped guide holes 576, and one end of the four rotating cylinders 575 is respectively fixedly connected to the middle end of one side of the second guide plate 52. The rotating cylinder 575 is horizontally rolled and installed in the inner frame of the guide bar frame 574. The guide bar frame 574 is horizontally arranged, the second electric push cylinder 573 is vertically arranged, and the first The two outer cylinders are fixedly connected to the top of the rectangular outer frame 51, the end of the second push rod in the second electric push cylinder 573 is vertically fixedly connected to the upper end of the rectangular outer frame 51, the lower ends of the two guide rods 572 are vertically fixed on both sides above the rectangular outer frame 51, the upper ends of the two guide rods 572 are vertically telescopically installed in the two guide cylinders 571 respectively, the guide cylinders 571 are fixedly connected to the inner wall of the rectangular outer frame 51, the second electric push cylinders 573 in the two angle adjustment mechanisms 57 are connected to the programmable controller through wires, the programmable controller controls the second electric push cylinders 573 in the two angle adjustment mechanisms 57 to synchronously telescope and make the guide bars 574 rise and fall synchronously, drive the rotating cylinder 575 to rotate along the arc-shaped guide hole 576, and realize the simultaneous adjustment of the inclination angles of the four second guide plates 52 in the second combined guide member 5.

[0033] refer to Figure 8 and Fig.10The second combined flow guide member 5 also includes two spacing adjustment mechanisms 58, which are composed of six hinge rods 581, a third electric push cylinder 584, and three round blocks 582. There are four vertical holes 583 on the side plate 55. The six hinge rods 581 are arranged in groups of two each, and a total of three groups are connected to the four side plates 55 on the same side. The two hinge rods 581 in each group are cross-rotatably connected in an X shape. The three round blocks 582 are rotatably installed on the middle ends of the three groups of hinge rods 581. The lower ends of the hinge rods 581 are rotatably installed on the lower ends of the side plates 55. The upper ends of the six hinge rods 581 are respectively rolled and installed in the four vertical holes 583 at the upper ends of the four side plates 55. The hinge rods 581 at the upper and lower ends of the two middle side plates 55 on the same side are connected and overlapped to form a diamond telescopic frame. The third electric push cylinder 584 is vertically and parallelly installed on the first vertical hole 583 on the left side. At the top, the third outer cylinder of the third electric push cylinder 584 is fixedly connected to the upper end of the rectangular outer frame 51, the third push rod in the third electric push cylinder 584 is vertically downward, and the end of the third push rod in the third electric push cylinder 584 is rotatably connected to the first hinge 581 at the upper left end, and the programmable controller is connected to the third electric push cylinder 584 through a wire. The programmable controller controls the extension and retraction of the third electric push cylinder 584 to drive the diamond-shaped extension frame to extend and retract, and adjust the spacing between the four second guide plates 52. When the particles are large and the dust concentration is high, the spacing is increased to reduce the airflow resistance, such as a spacing of 30mm to 50mm. When the particles are small and the concentration is low, the spacing is reduced to increase the number of contacts and improve the capture effect, such as a spacing of 20mm to 30mm. The spacing adjustment is monitored by the dust monitor and controlled by the programmable controller.

[0034] It should be added that the programmable controller, as the core of the intelligent control of the entire dust collection device used to process protective clothing, has a specially designed control logic. The programmable controller has a variety of preset working modes built in. By receiving the real-time data transmitted by the dust monitor, it determines the current dust treatment working condition based on key parameters such as dust concentration and particle size distribution; In terms of parameter setting basis, when the dust concentration detected by the dust monitor is higher than the preset high concentration threshold, such as 50mg / m 3 , and when the average particle diameter is greater than the preset large particle diameter threshold, such as the large particle diameter threshold is 10 μm, the programmable controller determines that it is a large particle and high-concentration dust condition, and at this time sends a command to the third electric push cylinder 584 to extend it, driving the diamond-shaped telescopic frame to extend, thereby increasing the spacing between the four second guide plates 52 to 50 mm, so as to reduce the airflow resistance and ensure that the dust-laden gas can smoothly pass through the guide device; When the dust monitor detects that the dust concentration is lower than the preset low concentration threshold, such as the low concentration threshold of 10 mg / m 3, and when the average particle diameter is less than the preset small particle diameter threshold, such as when the small particle diameter threshold is 5 μm, the programmable controller determines that it is a small particle and low-concentration dust condition, and controls the third electric push cylinder 584 to contract, so that the diamond-shaped telescopic frame contracts, and the spacing between the second guide plates 52 is reduced to 20 mm, thereby increasing the number of contacts between the dust-laden gas and the second guide plates 52 and improving the capture effect; Regarding the adjustment of the angle between the first guide plate 31 in the first combined guide member 3 and the central axis of the air inlet duct 17, when the dust monitor detects that the dust-laden gas flow rate is lower than a preset low flow rate threshold, such as a low flow rate threshold of 500 m / s, the dust monitor detects that the dust-laden gas flow rate is lower than a preset low flow rate threshold, such as a low flow rate threshold of 500 m / s. 3 / h, and when the dust concentration is in the low concentration range, the programmable controller controls the first electric push cylinder 33 to contract, and adjusts the angle between the first guide plate 31 and the central axis of the air intake duct 17 to 20-30 degrees, thereby extending the residence time of the dust-laden gas in the pre-dust chamber shell and promoting dust settling. On the contrary, when the flow rate is higher than the preset high flow rate threshold, such as the high flow rate threshold of 1500m 3 / h, and when the dust concentration is high, the programmable controller controls the first electric push cylinder 33 to extend, and increases the angle to 30-45 degrees to speed up the gas passing speed and prevent dust recoil.

[0035] In terms of receiving data from the dust monitor, the programmable controller and the dust monitor are transmitted via wired or wireless connection. The dust monitor collects data such as dust concentration and particle size in the dust-laden gas in real time, and packages the data in a predetermined communication protocol format and sends it to the programmable controller. After receiving the data, the communication module inside the programmable controller parses and processes it, and then issues control instructions to the corresponding electric push cylinder based on the above-mentioned control logic to achieve precise adjustment of the angle and spacing of the second guide plate 52, so that the entire device can automatically optimize the operating state according to the actual dust conditions, thereby improving the dust collection efficiency and adaptability.

[0036] In this embodiment, the first combined guide member 3 of the present invention can flexibly change the angle between the first guide plate 31 and the central axis of the air intake pipe 17 through the first electric push cylinder 33. When the flow rate is low and the concentration is low, the angle can be adjusted to 20-30 degrees, which effectively prolongs the residence time and improves the sedimentation effect; when the flow rate is high and the concentration is high, the angle can be adjusted to 30-45 degrees to speed up the gas passing speed and prevent dust recoil. The first guide plate 31 is made of a special self-cleaning aluminum alloy new composite material, and the windward side has a first streamlined shape 35 and a polytetrafluoroethylene coating, which greatly reduces the dust adhesion and reduces the frequency of cleaning and maintenance. As for the second combined guide member 5, there is no structure in the bag filter in the conventional technology that can simultaneously adjust the angle and spacing of the second guide plates 52 in an intelligent manner. The second combined guide member 5 in the present invention can not only synchronously adjust the inclination angle of the four second guide plates 52 through the angle adjustment mechanism 57, but also use the spacing adjustment mechanism 58 to adaptively adjust the spacing between the second guide plates 52 according to the dust particle size and concentration. When the dust is large and the concentration is high, the spacing is increased to reduce the airflow resistance, such as increasing the spacing from 30mm to 50mm; when the dust is small and the concentration is low, the spacing is reduced to increase the number of contacts and improve the capture effect, such as reducing the spacing from 20mm to 30mm, which greatly improves the dust handling capacity and dust removal efficiency under different working conditions; In addition, the shell structure of conventional similar devices is relatively simple, mostly single-layer or simple cylindrical structure, and cannot achieve multi-stage and multi-mode treatment of dust-containing gas through the synergistic effect of the layered structure, including the cover plate 11, the upper tube 12, the middle tube 13, the lower tube 14, the dust collection bucket 15 and the two first combined guide members 3 and the second combined guide members 5, like the pre-dust chamber shell 1 in the present invention. Therefore, the overall dust collection efficiency and adaptability are far inferior to the device of the present invention.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dust collection device for producing protective clothing, characterized in that: include: A pre-dust chamber housing (1) and a second combined flow guide member (5); An air inlet duct (17) is connected to the upper left end of the pre-dust chamber housing (1), an air outlet duct (18) is connected to the lower right end of the pre-dust chamber housing (1), the lower end of the pre-dust chamber housing (1) comprises a dust collecting hopper (15) having a funnel-shaped appearance, the dust collecting hopper (15) is arranged below the air outlet duct (18), and the second combined flow guide member (5) is arranged between the air inlet duct (17) and the air outlet duct (18) in the pre-dust chamber housing (1); The second combined flow guide member (5) is composed of a rectangular outer frame (51), four second flow guide plates (52), two angle adjustment mechanisms (57) and two spacing adjustment mechanisms (58); the four second flow guide plates (52) are equidistantly arranged in parallel; the second flow guide plates (52) are gradually inclined from top to bottom to approach the air inlet duct (17) in the pre-dust chamber housing (1); both ends of each second flow guide plate (52) are symmetrically connected to side plates (55); the side plates (55) at both ends of the first second flow guide plate (52) on the left are fixedly connected to the inner wall of the rectangular outer frame (51); the outer sides of the side plates (55) at both ends of the remaining three second flow guide plates (52) are horizontally slidably connected to the front and rear inner walls of the rectangular outer frame (51); cylinders (56) are fixedly installed on both sides of the lower ends of the four second flow guide plates (52); each second flow guide plate (52) is rotatably connected to the lower sides of the two side plates (55) on both sides of the second flow guide plate (52) through two cylinders (56); The two angle adjustment mechanisms (57) are symmetrically arranged on both sides of the four second guide plates (52), respectively. The angle adjustment mechanism (57) is composed of a guide bar frame (574), a second electric push cylinder (573), four rotating cylinders (575) and four arc-shaped guide holes (576). The four arc-shaped guide holes (576) in the second combined guide member (5) are respectively arranged at the upper ends of the four side plates (55) on the same side, and the centers of the arc-shaped guide holes (576) coincide with the center axis of the cylinder (56). The four rotating cylinders (575) are respectively and equidistantly mounted on the four arc-shaped guide holes (576) in a rolling manner. ), and one end of the four rotating drums (575) is respectively fixedly connected to the middle end of one side of the four second guide plates (52), the four rotating drums (575) are all horizontally rolled and installed in the inner frame of the guide bar frame (574), the guide bar frame (574) is horizontally arranged, the second electric push cylinder (573) is vertically arranged, the second push rod in the second electric push cylinder (573) is vertically arranged downward, the second outer drum in the second electric push cylinder (573) is fixedly connected to the top end of the rectangular outer frame (51), and the end of the second push rod in the second electric push cylinder (573) is vertically fixedly connected to the upper end of the rectangular outer frame (51); The two spacing adjustment mechanisms (58) are symmetrically arranged on both sides of the four second guide plates (52), respectively. The spacing adjustment mechanism (58) is composed of six hinge rods (581) and a third electric push cylinder (584), and a vertical hole (583) is arranged on the side plate (55). The six hinge rods (581) are divided into a group of two, and a total of three groups. The two hinge rods (581) in each group are cross-rotatably connected in an X shape. The lower ends of the six hinge rods (581) are respectively rotatably mounted on the lower ends of the four side plates (55), and the upper ends of the six hinge rods (581) are respectively rollingly mounted on the four vertical holes (583) at the upper ends of the four side plates (55). 3), and the rolling connection parts of the two hinge rods (581) at the upper ends of the two middle side panels (55) on the same side overlap with each other, and the rotation connection parts of the two hinge rods (581) at the lower ends of the two middle side panels (55) on the same side also overlap with each other, the third electric push cylinder (584) is vertically and parallelly installed just above the first vertical hole (583) on the left side, the third outer cylinder of the third electric push cylinder (584) is fixedly connected to the upper end of the rectangular outer frame (51), the third push rod in the third electric push cylinder (584) is arranged downward, and the end of the third push rod is rotationally connected to the first hinge rod (581) at the upper end on the left side.

2. The dust collecting device for producing protective clothing according to claim 1 is characterized in that: The pre-dust chamber housing (1) further comprises a cover plate (11), an upper cylinder (12), a middle cylinder (13), a lower cylinder (14) and a support leg frame (16); the cover plate (11), the upper cylinder (12), the middle cylinder (13), the lower cylinder (14), the dust collection hopper (15) and the support leg frame (16) are coaxially fixedly connected in sequence from top to bottom, and a dust discharge port at the lower end of the dust collection hopper (15) is fixedly connected to a star-shaped discharger (2).

3. The dust collecting device for producing protective clothing according to claim 2 is characterized in that: A first combined flow guide member (3) is installed in both the upper tube (12) and the lower tube (14), and the second combined flow guide member (5) is arranged in the middle tube (13). The first combined flow guide member (3) is composed of a plurality of mutually parallel first flow guide plates (31), and the angle between the first flow guide plates (31) and the central axis of the air intake duct (17) is in the range of 20-45 degrees. The plurality of first flow guide plates (31) are vertically arranged and arranged equidistantly on the same horizontal plane, and the top ends of the plurality of first flow guide plates (31) are connected to mutually parallel fixed plates (32) and movable plates (34).

4. The dust collecting device for producing protective clothing according to claim 3 is characterized in that: The fixed plate (32) is arranged on a side away from the windward surface of the first guide plate (31), one side of the first guide plate (31) is rotatably connected to the fixed plate (32) via a first rotating shaft, the movable plate (34) is arranged in the middle of the top of the first guide plate (31), and the middle top of the first guide plate (31) is rotatably connected to the movable plate (34) via a second rotating shaft, the fixed plate (32) and the movable plate (34) respectively form a deformable parallelogram structure with the two first guide plates (31), a first electric push cylinder (33) is connected between one end of the fixed plate (32) and the movable plate (34), one end of the first outer cylinder in the first electric push cylinder (33) is rotatably connected to one end of the fixed plate (32), and the end of the first push rod in the first electric push cylinder (33) is rotatably connected to one end of the movable plate (34).

5. The dust collecting device for producing protective clothing according to claim 4 is characterized in that: A dust monitor for real-time monitoring of gas flow and dust concentration is fixedly installed in the gas outlet pipe (18); the dust monitor is connected to a programmable controller via a wire; and the programmable controller is connected to the first electric push cylinder (33), the second electric push cylinder (573), and the third electric push cylinder (584) via a wire.

6. The dust collecting device for producing protective clothing according to claim 1 is characterized in that: A tarpaulin (54) made of a soft material is provided in a closed connection between the right side of the last second guide plate (52) on the right side and the right inner wall of the rectangular outer frame (51).

7. The dust collecting device for producing protective clothing according to claim 1 is characterized by: Guide rods (572) are vertically fixedly connected to both sides of the upper part of the rectangular outer frame (51); guide cylinders (571) are telescopically connected to the outer peripheries of the upper ends of the two guide rods (572); and the guide cylinders (571) are fixedly connected to the inner wall of the rectangular outer frame (51).

8. The dust collecting device for producing protective clothing according to claim 3 is characterized by: An inclined plate (4) is fixedly mounted on the right side of the first combined flow guide member (3) in the upper tube (12) in a tilted state.

9. The dust collecting device for producing protective clothing according to claim 3 is characterized by: The windward side of the first deflector (31) is provided with a first streamlined shape (35), and the upper side of the second deflector (52) is provided with a second streamlined shape (53).

10. The dust collecting device for producing protective clothing according to claim 1, characterized in that: The size of the air outlet of the air outlet pipe (18) is 0.8-0.9 times the area of ​​the air inlet of the air inlet pipe (17).

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