Wood chip dust recovery treatment equipment for wooden furniture processing

Abstract

The invention relates to the technical field of wood dust recovery, and particularly discloses wood dust recovery treatment equipment for wooden furniture processing, which comprises a cloth bag dust removal unit, a dust removal box and a filter assembly, a horizontal partition plate is arranged at the upper end of an inner cavity of the dust removal box, the filter assembly comprises a cage venturi tube and a filter cloth bag, and the lower end of the cage venturi tube is connected with a framework. A transition ring is connected to the lower end of the framework, an elastic spiral rib is connected to the lower end of the transition ring, a supporting bottom plate is connected to the lower end of the elastic spiral rib, a first magnetic block is arranged at the center of the lower surface of the supporting bottom plate, a plurality of rotating rods are arranged in the dust removal box located below the filtering assembly, and a disc block is arranged on each rotating rod; a second magnetic block and a third magnetic block are installed at the two ends of the outer circle face of the disc block correspondingly. According to the invention, the filter assembly can continuously and efficiently filter sucked wood dust powder, and continuous and stable operation of the whole bag dust removal unit is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of sawdust dust recovery, and in particular discloses sawdust dust recovery and processing equipment for wooden furniture processing. Background Art

[0002] Wooden furniture is usually made of wood through cutting, sawing, planing, drilling and other processes. During the processing, not only a large amount of sawdust will fall on the machine table, but also dust will be dispersed in the air, which will harm the physical and mental health of the operators. In order to recycle sawdust dust, it is common to equip the recycling equipment with negative pressure suction + bag filtration for processing.

[0003] For example, the utility model patent with application number 201720540868.X discloses a wood chip collection device for a multifunctional woodworking machine tool, including a collecting hood, a fixed support, an air inlet pipe, a bag dust collector, a connecting pipe, an induced draft fan and an air outlet pipe. The collecting hood is vertically installed on the fixed support. The collecting hood is in the shape of a trumpet with a small inside and a large outside. The opening end of the collecting hood faces the multifunctional woodworking machine tool. The shape of the opening end of the collecting hood is a rectangle that matches the side size of the multifunctional woodworking machine tool. A filter screen for filtering large particles of wood chips is fixedly connected to the collecting hood. A collecting basket is detachably and fixedly connected to the bottom of the collecting hood. The collecting hood is connected to the bag dust collector through the air inlet pipe, and the bag dust collector is connected to the induced draft fan through the connecting pipe. The air outlet on the induced draft fan is connected to the air outlet pipe, and a collecting hopper for collecting small particles of wood chips is installed at the bottom of the bag dust collector. Although the wood chip collection device disclosed in the patent has a dust removal function, for some large-particle wood chips, a high-power negative pressure fan is required to draw in the wood chips, resulting in excessively high operating costs for the entire device. In addition, after a period of operation, the bag dust collector in the wood chip collection device will be blocked due to dust adhering to the surface of the bag, and it cannot be cleaned in time. Although the existing pulse bag dust collectors on the market can regularly fill the bag with high-pressure airflow for cleaning, the design structure of the pulse cleaning mechanism is complex and the equipment cost is high. In addition, when the bag is cleaned by high-pressure airflow, it is easy to cause the air pressure and airflow inside the dust collector to be turbulent. The dust settled at the bottom will be stirred up and attached to the surface of the bag again. At the same time, the introduction of high-pressure airflow will cause the air pressure inside the dust collector to increase, and the negative pressure at the collection hood will decrease, making it impossible to continuously and effectively suck the wood chip dust generated during the processing. Therefore, in view of the above-mentioned shortcomings of the existing wood chip collection device, the present application proposes a wood chip dust recovery and treatment device for wooden furniture processing that can effectively solve the above-mentioned technical problems. Summary of the invention

[0004] The present invention aims to provide a wood chip dust recovery and processing device for wooden furniture processing, so as to solve the problems and shortcomings of the existing wood chip collection device in the background technology.

[0005] The present invention is achieved through the following technical solutions: A sawdust dust recovery and processing device for wooden furniture processing, comprising a bag dust removal unit, a suction unit and a negative pressure exhaust unit, a dust removal box and a filter assembly, a horizontal partition is arranged at the upper end of the inner cavity of the dust removal box, a plurality of the filter assemblies are installed on the horizontal partition in a rectangular array, the suction unit is connected to the dust removal box below the horizontal partition, and the negative pressure exhaust unit is connected to the dust removal box above the horizontal partition; The filter assembly includes a cage venturi and a filter cloth bag, the lower end of the cage venturi is connected to a frame, the lower end of the frame is connected to a transition ring, the lower end of the transition ring is connected to an elastic spiral rib, the lower end of the elastic spiral rib is connected to a support base plate, a first magnetic block is arranged at the center of the lower surface of the support base plate, the filter cloth bag is sleeved on the outer surfaces of the cage venturi, the frame, the transition ring, the elastic spiral rib and the support base plate, and the upper end of the filter cloth bag is fixedly connected to the cage venturi, and a through hole for extending the first magnetic block is opened at the center of the bottom of the filter cloth bag; A plurality of rotating rods are arranged in the dust removal box below the filter assembly, and the ends of the rotating rods are connected to a driving device, and each of the rotating rods is provided with a plurality of disc blocks aligned one by one with a row of filter assemblies, and a second magnetic block and a third magnetic block are respectively installed at both ends of the outer circumferential surface of the disc block, and the magnetic poles of the radially outward end faces of the second magnetic block and the third magnetic block are arranged oppositely.

[0006] As a further configuration of the above solution, the suction unit includes a suction pipe connected to the dust removal box, an end of the suction pipe is connected to a telescopic tube, and an end of the telescopic tube is connected to a suction hood.

[0007] As a further configuration of the above scheme, the lower ends of the front and rear sides of the dust removal box are connected to strip boxes, the other end of the suction pipe is connected to two branch pipes through a three-way pipe, and the ends of the two branch pipes are respectively connected to corresponding strip boxes.

[0008] As a further configuration of the above scheme, the suction hood is designed as a long strip structure, the center of the upper surface of the suction hood is connected to the telescopic tube, a pair of belt rollers are symmetrically arranged at both ends of the suction hood, and the outer end of one of the belt rollers is connected to a power motor, a conveyor belt is arranged between each pair of the belt rollers, and the outer surface of the conveyor belt is provided with bristles.

[0009] As a further configuration of the above scheme, the negative pressure exhaust unit includes a negative pressure fan, an exhaust end of the negative pressure fan is connected to an exhaust pipe, and an end of the exhaust pipe is connected to the upper end of the dust removal box.

[0010] As a further configuration of the above scheme, the outer diameters of the skeleton, transition ring, elastic spiral ribs and support base plate are configured to be the same, and a locking ring for pressing and fixing the lower end of the filter bag is provided at the center of the lower surface of the support base plate.

[0011] As a further configuration of the above solution, the end of each rotating rod extending into the driving device is connected to a bevel gear, and the interior of the driving device achieves synchronous rotation of all the rotating rods by means of bevel gear meshing.

[0012] As a further configuration of the above solution, a collecting hopper is provided at the lower end of the dust removal box, and a discharging device is connected to the lower end of the collecting hopper.

[0013] The sawdust dust recovery and processing equipment for wooden furniture processing disclosed in the present invention sucks the sawdust dust on the machine tool table and dispersed in the air into the bag dust removal unit by a suction unit. When the sawdust dust enters the dust removal box, it will be filtered and intercepted by the filter bag on the filter assembly. A part of the intercepted sawdust dust will fall down, and the other part will adhere to the surface of the filter bag.

[0014] During the process of the filter assembly filtering sawdust dust, the driving device will simultaneously drive the rotating rod to rotate. During the rotation of the rotating rod, the second and third magnetic blocks at both ends of the disc block will successively generate repulsive force and magnetic attraction force on the first magnetic block. When the first magnetic block is subjected to the repulsive force, the supporting base plate will move upward, thereby compressing the elastic spiral ribs to move upward, causing the filter cloth bag on the outside to relax; conversely, when subjected to the magnetic attraction force, the supporting base plate will stretch the elastic spiral ribs to move downward, causing the filter cloth bag on the outside to straighten. Continuously repeating the above end will cause the filter cloth bag to switch back and forth between the relaxed and straightened states, thereby shaking off all the dust originally attached to the surface of the filter cloth bag, allowing the filter cloth bag to always maintain a high filtering effect.

[0015] In addition, when the suction hood in the suction unit moves in a straight line along the machine tool table, the bristles on the surface of the conveyor belts at both ends can sweep the wood chips and dust on both sides to the middle, so that the wood chips and dust move to just below the suction port, thereby fully absorbing the wood chips and dust scattered on the machine tool table. At the same time, a good suction effect can be achieved without the need for a high-power negative pressure fan.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The bag-type dust collector in the present invention is based on the existing bag-type dust collector. On the one hand, the filter assembly is improved and designed, and on the other hand, a magnetic attraction and repulsion mechanism is arranged at the bottom thereof. During the operation of the bag-type dust collector, the second magnetic block and the third magnetic block arranged at both ends of the disc block generate magnetic attraction and repulsion forces on the first magnetic block at the lower end of the filter assembly, so that the filter bag on the filter assembly is constantly switched between a relaxed and stretched state, and all the dust originally attached to the surface of the filter bag is shaken off. Compared with the pulse cleaning method, it is not only simpler in structure, but also will not break the original air pressure state inside the dust removal box due to the pulse high-pressure airflow, and will not cause internal airflow turbulence, so that the filter assembly can continuously and efficiently filter the drawn-in wood chip powder, thereby ensuring the continuous and stable operation of the entire bag-type dust collector unit.

[0017] The present invention further improves the design of the suction hood, sets the suction hood into a strip shape, and sets cleaning mechanisms on both sides to clean the materials on both sides to the center of the suction port. It can not only fully absorb the wood chips and dust scattered on the machine tool table, but also achieve a better suction effect without the need for a high-power negative pressure fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the front three-dimensional structure of the exterior of the present invention; Figure 2 It is a schematic diagram of the back three-dimensional structure of the exterior of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure inside the bag dust removal unit of the present invention; Figure 4 It is a three-dimensional disassembled diagram of the filter assembly in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating rod, the disc block, the second magnetic block and the third magnetic block in the present invention; Figure 6 This is a schematic diagram of the external three-dimensional structure of the suction cover in Example 2 of the present invention; Figure 7 Schematic diagram of the internal three-dimensional structure of the suction hood in Example 2 of the present invention. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0021] 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. Figures 1 to 7 , and describes the application in detail with reference to embodiments. Example 1

[0022] Embodiment 1 discloses a wood dust recovery and treatment device for wooden furniture processing, Figure 1 and attached Figure 2 The main body of the device includes a bag dust removal unit 1, a suction unit 2 and a negative pressure exhaust unit 3. The bag dust removal unit 1 includes a dust removal box 101, the lower end of the dust removal box 101 is connected to a collecting hopper 102, and the lower end of the collecting hopper 102 is connected to a discharge device 103. The discharge device 103 in this embodiment 1 adopts an auger feeder, and a corresponding gate valve is provided at the discharge port of the auger feeder. In addition, a support leg 104 is provided at each of the four corners of the lower end of the dust removal box 101 to ensure that the entire bag dust removal unit 1 can be stably installed on the ground.

[0023] Reference Figure 3 , Attachment Figure 4 and attached Figure 5 A horizontal partition 105 is fixedly installed at the upper end of the inner cavity of the dust removal box 101, so that the inner cavity of the dust removal box 101 above and below the horizontal partition 105 is divided into an exhaust area and a dust removal area, the suction unit 2 is directly connected to the dust removal area, and the negative pressure exhaust unit 3 is directly connected to the exhaust area. A plurality of rows of mounting holes are provided in a rectangular array on the horizontal partition 105, and a filter assembly 4 extending to the bottom of the dust removal area is installed in each mounting hole.

[0024] The specific filter assembly 4 includes a cage venturi 401 and a filter bag 402 adapted to the mounting hole. The lower end of the cage venturi 401 is connected to a frame 403 composed of vertical steel + support ring, the lower end of the frame 403 is connected to a transition ring 404, the lower end of the transition ring 404 is connected to an elastic spiral rib 405, and the outer diameters of the frame 403, the transition ring 404 and the elastic spiral rib 405 are basically the same, so that the filter bag 402 sleeved outside the three can maintain a straight cylinder shape. The lower end of the elastic spiral rib 405 is connected to a support bottom plate 406, which is set to a circular shape with the same size as the transition ring 404, and then a first magnetic block 407 is fixedly installed at the center of the lower surface of the support bottom plate 406, and a number of threaded holes are evenly opened on the support bottom plate 406 outside the first magnetic block 407. The filter cloth bag 402 is shaped into a cylinder and is sleeved on the outer surfaces of the cage venturi 401, the frame 403, the transition ring 404, the elastic spiral ribs 405 and the support base plate 406, and the upper end of the filter cloth bag 402 is fixedly connected to the outer wall of the cage venturi 401, and a through hole for extending the first magnetic block 407 is opened at the center of its bottom, and then a locking ring 408 is provided at the center of the lower surface of the support base plate 406 by connecting screws to press and fix the filter cloth bag 402 on the support base plate 406.

[0025] A plurality of rotating rods 106 are rotatably arranged in the dust removal box 101 below the filter assembly 4, and each rotating rod 106 is aligned with a row of filter assemblies 4 in the upper and lower directions. In order to realize the simultaneous driving of the plurality of rotating rods 106, a driving device 110 is also arranged on the outer side of the dust removal box 101, and the end of each rotating rod 106 extending into the driving device 110 is connected with a bevel gear, and then the driving device 110 can realize the synchronous rotation of all the rotating rods 106 by the engagement of the bevel gears. A plurality of disc blocks 107 are fixedly arranged at intervals on each rotating rod 106, and each disc block 107 is arranged directly below the central axis of a filter assembly 4. Two notches are symmetrically opened on the outer circumferential surface of the disc block 107, and then the second magnetic block 108 and the third magnetic block 109 are respectively installed in the two notches, and the magnetic poles of the second magnetic block 108 and the third magnetic block 109 are arranged oppositely in the radial direction to the outer end surface, and in order to avoid interference between the magnetic fields of the second magnetic block 108 and the third magnetic block 109, the disc block 107 is made of magnetic isolation material.

[0026] Reference Figure 1 and attached Figure 2The suction unit 2 includes a suction pipe 201, one end of which is connected to a telescopic pipe 202, and then a suction cover 203 is connected to the end of the telescopic pipe 202. The other end of the suction pipe 201 is connected to two branch pipes 204 through a three-way pipe, and the ends of the two branch pipes 204 are connected to a strip box 205, and the strip box 205 is connected to the lower ends of the front and rear sides of the dust removal box 101, so that the inhaled wood chips and powder can enter the dust removal box 101 along the front and rear sides of the dust removal box 101 at the same time, and then be filtered by the filter assembly 4 from two directions. The negative pressure exhaust unit 3 includes a negative pressure fan 301, the exhaust end of the negative pressure fan 301 is connected to an exhaust pipe 302, and then the end of the exhaust pipe 303 is connected to the upper end of the side of the dust removal box 101.

[0027] When the wood chip and dust recovery and processing equipment disclosed in this embodiment 1 is used for wooden furniture processing, the negative pressure exhaust unit 3 provides negative pressure to the entire inner cavity of the equipment, and then the wood chips on the machine tool table and the dust dispersed in the air are all sucked into the bag dust removal unit 1 through the suction unit 2.

[0028] When the sawdust powder enters the dust removal box 101 along with the air flow, most of the sawdust will fall into the collecting hopper 102 due to the filtering and intercepting effect of the filter bag on the filter assembly 4, while some of the sawdust powder will adhere to the surface of the filter bag of the filter assembly 4, causing the running resistance to increase and the filtering effect to decrease. To avoid this situation, the driving device 110 is synchronously started during the operation of the bag dust removal unit 1 to rotate the rotating rod 106, and the disc block 107 rotates synchronously under the action of the rotating rod 106. During the rotation of the disc block 107, the second magnetic block 108 and the third magnetic block 109 are reciprocated and staggered to approach the first magnetic block 407 at the lower end of the filter assembly 4, so that they can continuously generate repulsive force and adsorption force on the first magnetic block 407. When the first magnetic block 407 is subjected to a repulsive force, the supporting bottom plate 406 will compress the elastic spiral rib 405 and move it upward, so that the filter cloth bag 402 on the outside thereof will relax; conversely, when subjected to an adsorption force, the supporting bottom plate 406 will stretch the elastic spiral rib 405 and move it downward, so that the filter cloth bag 402 on the outside thereof will be stretched straight, so that the filter cloth bag 402 will be constantly switching between a relaxed state and a stretched state, thereby shaking off all the dust originally attached to the surface of the filter cloth bag 402, so that the filter cloth bag 402 can always maintain a high filtering effect. Example 2

[0029] Example 2 discloses a sawdust dust recovery and processing device for wooden furniture processing based on the technical solution in Example 1, and the similarities between the device and Example 1 will not be described again.

[0030] Reference Figure 1 , Attachment Figure 6 and attached Figure 7The present embodiment 2 mainly redesigns the suction hood 203 and its internal structure. The suction hood 203 is in an elongated shape as a whole, and a slider 206 is provided on both end surfaces. The slider 206 cooperates with the slide rail on the machine tool table so that the slider 206 can move along the machine tool table.

[0031] An air extraction interface 2031 connected to the end of the telescopic tube 202 is provided at the center of the upper surface of the suction hood 203, and then a pair of horizontally arranged belt rollers 207 are symmetrically provided at the left and right ends of the inner cavity of the suction hood 203, and the outer end of one of the belt rollers 207 is connected to a power motor 208. A conveyor belt 209 is provided between each pair of belt rollers 207, and then a large number of bristles 210 are provided on the outer surface of the conveyor belt 209.

[0032] In the second embodiment, the suction hood 203 is designed to clean the sawdust on the machine table by moving the suction hood 203 in a straight line along the slide rail on the machine table so that the width of the entire machine table can be covered during the movement. At the same time, the bristles 210 on the conveyor belts 209 at both ends of the suction hood 203 can simultaneously brush the sawdust powder on both sides of the machine table toward the middle, and then the sawdust powder can be completely sucked away under the negative pressure suction of the telescopic tube 202. During the normal processing of wood, the powder dispersed in the air will also move to the suction hood 203 due to the negative pressure at the lower end opening of the suction hood 203, and will be sucked away by the suction hood 203. The structural design of the entire suction hood 203 not only makes it have a larger sawdust powder collection range compared to a large collection hood, but also does not require a high-power fan to increase sufficient negative pressure to complete the suction of the material.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sawdust dust recovery and processing equipment for wooden furniture processing, comprising a bag dust removal unit, a suction unit and a negative pressure exhaust unit, characterized in that: The dust removal box and the filter assembly, the upper end of the inner cavity of the dust removal box is provided with a horizontal partition, a plurality of the filter assemblies are installed on the horizontal partition in a rectangular array, the suction unit is connected to the dust removal box below the horizontal partition, and the negative pressure exhaust unit is connected to the dust removal box above the horizontal partition; The filter assembly includes a cage venturi and a filter cloth bag, the lower end of the cage venturi is connected to a frame, the lower end of the frame is connected to a transition ring, the lower end of the transition ring is connected to an elastic spiral rib, the lower end of the elastic spiral rib is connected to a support base plate, a first magnetic block is arranged at the center of the lower surface of the support base plate, the filter cloth bag is sleeved on the outer surfaces of the cage venturi, the frame, the transition ring, the elastic spiral rib and the support base plate, and the upper end of the filter cloth bag is fixedly connected to the cage venturi, and a through hole for extending the first magnetic block is opened at the center of the bottom of the filter cloth bag; A plurality of rotating rods are arranged in the dust removal box below the filter assembly, and the ends of the rotating rods are connected to a driving device, and each of the rotating rods is provided with a plurality of disc blocks aligned one by one with a row of filter assemblies, and a second magnetic block and a third magnetic block are respectively installed at both ends of the outer circumferential surface of the disc block, and the magnetic poles of the radially outward end faces of the second magnetic block and the third magnetic block are arranged oppositely.

2. The sawdust dust recovery and processing equipment for wooden furniture processing according to claim 1 is characterized in that: The material suction unit comprises a material suction pipe connected to the dust removal box, an end of the material suction pipe is connected to a telescopic pipe, and an end of the telescopic pipe is connected to a material suction cover.

3. The sawdust dust recovery and processing equipment for wooden furniture processing according to claim 2, characterized in that: The lower ends of the front and rear sides of the dust removal box are both connected with strip boxes, and the other end of the suction pipe is connected to two branch pipes through a three-way pipe, and the ends of the two branch pipes are respectively connected to the corresponding strip boxes.

4. The sawdust dust recovery and processing equipment for wooden furniture processing according to claim 2, characterized in that: The suction hood is designed in a long strip structure. The center of the upper surface of the suction hood is connected to the telescopic tube. A pair of belt rollers are symmetrically arranged at both ends of the suction hood, and the outer end of one of the belt rollers is connected to a power motor. A conveyor belt is arranged between each pair of the belt rollers, and the outer surface of the conveyor belt is provided with bristles.

5. The sawdust dust recovery and processing equipment for wooden furniture processing according to claim 1, characterized in that: The negative pressure exhaust unit comprises a negative pressure fan, an exhaust end of the negative pressure fan is connected to an exhaust pipe, and an end of the exhaust pipe is connected to the upper end of the dust removal box.

6. The sawdust dust recovery and processing equipment for wooden furniture processing according to claim 1, characterized in that: The outer diameters of the frame, transition ring, elastic spiral ribs and support base plate are arranged to be the same, and a locking ring for pressing and fixing the lower end of the filter bag is arranged at the center of the lower surface of the support base plate.

7. The sawdust dust recovery and processing equipment for wooden furniture processing according to claim 1, characterized in that: The end of each rotating rod extending into the driving device is connected to a bevel gear, and the interior of the driving device realizes synchronous rotation of all the rotating rods by means of bevel gear meshing.

8. The sawdust dust recovery and processing equipment for wooden furniture processing according to claim 1, characterized in that: A collecting hopper is arranged at the lower end of the dust removal box, and a discharging device is connected to the lower end of the collecting hopper.

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