CN117861330B

CN117861330B - Cloth bag dust remover for sawing edges in plywood production

Info

Publication number: CN117861330B
Application number: CN202410187091.8A
Authority: CN
Inventors: 全书磊; 全先涛; 李潇晴
Original assignee: Linyi Tengde New Materials Co ltd
Current assignee: Linyi Tengde New Materials Co ltd
Priority date: 2024-02-20
Filing date: 2024-02-20
Publication date: 2024-07-02
Anticipated expiration: 2044-02-20
Also published as: CN117861330A

Abstract

The application relates to a cloth bag dust remover for sawing edges in plywood production, which belongs to the technical field of formaldehyde purification and comprises an outer shell, a framework arranged in the outer shell and a dust removing system, wherein the inner space of the outer shell is divided into a dust removing cavity and a cleaning cavity, the dust removing system comprises two groups of filter bags and filter boxes, and the filter boxes are arranged in the filter bags; the filter box comprises an upper chassis, a lower chassis and a pipe sleeve, wherein a supporting shaft for connection is fixedly connected between the upper chassis and the lower chassis; the pipe sleeve is vertically connected with the upper chassis and the lower chassis in a sliding manner; the pipe sleeve comprises a glass part and a fiber part which are fixedly connected with each other; active carbon is filled between the upper chassis and the lower chassis; the top surface of the upper chassis is fixedly connected with an input pipe, and the bottom surface of the lower chassis is fixedly connected with an output pipe; the input pipe is used for flowing in the potassium permanganate liquid into the filter box, and the output pipe is used for flowing out the potassium permanganate liquid. The application puts the activated carbon into the bag-type dust collector to remove dust and purify formaldehyde in air flow.

Description

Cloth bag dust remover for sawing edges in plywood production

Technical Field

The application relates to the technical field of formaldehyde purification, in particular to a cloth bag dust remover for sawing edges in plywood production.

Background

The bag-type dust collector mainly comprises an outer shell, a filter bag, an ash bucket, an ash cleaning system and the like. The operation mode of the bag-type dust remover comprises two steps of dust removal and cleaning. In the dust removing step, air flow to be filtered enters a bag-type dust remover, dust of the air flow is filtered by a filter bag, and dust-free air flow flows out of an exhaust pipeline arranged in the filter bag. In the cleaning step, the dust trapped on the surface of the filter bag is cleaned, and the dust enters the dust hopper and is uniformly treated. The common filter bag cleaning modes include pulse cleaning and mechanical cleaning, wherein the mechanical cleaning refers to that the filter bag is regularly vibrated to enable dust on the surface of the filter bag to fall off.

The addition of the edge sawing cloth bag dust remover means that the edge sawing is added on the filter bag, so that the contact area between the filter bag and dust can be increased, and the dust treatment efficiency is improved.

Dust emission problem often occurs in the cleaning process, namely a large amount of dust can be washed and adsorbed on the surface of the filter bag due to electrostatic effect. In the prior art, the simplest method for dust emission is to set a cleaning frequency, namely, the dust falls into the dust hopper in an intermittent cleaning mode and then the next cleaning operation is continued.

A large amount of dust can be generated in the production process of the plywood, and the dust can be discharged into the atmosphere after being filtered by a bag-type dust remover. Because formaldehyde is contained in the adhesive in the production of the plywood, a large amount of formaldehyde gas and other small amounts of volatile organic compounds can be carried in dust gas flow.

The activated carbon is the most commonly used material for absorbing formaldehyde, and has low price compared with other high molecular adsorption materials, thereby meeting the requirement of industrial production. However, because of the non-selectivity of the activated carbon adsorption, the activated carbon adsorption quantity is low, the replacement frequency is high, the replacement period is short, and the activated carbon needs to be continuously regenerated so as to desorb formaldehyde adsorbed by the activated carbon. The regeneration operation of the activated carbon usually adopts high temperature or acid gas, but the activated carbon adsorbed formaldehyde gas needs to be purified in the desorption process, and can also adopt a potassium permanganate soaking mode. The potassium permanganate reacts with formaldehyde to generate carbon dioxide, so that formaldehyde can be effectively removed.

In the prior art, the activated carbon is usually arranged outside the bag-type dust collector, so that the activated carbon is convenient to replace and regenerate. However, this method causes a large amount of formaldehyde to remain in the bag-type dust collector, and particularly the sawn edges on the periphery of the filter bag increase the residence area of formaldehyde. In the cleaning process, formaldehyde can enter the ash bucket along with dust due to the action of air flow, so that secondary pollution is caused. If the activated carbon is arranged inside the bag-type dust collector, the problem that the activated carbon is not easy to replace and regenerate is faced.

Disclosure of Invention

In order to solve the problem of regeneration of active carbon in a bag-type dust collector, the application provides a sawn-edge bag-type dust collector for plywood production.

The application provides a cloth bag dust remover for sawing edges in plywood production, which adopts the following technical scheme:

the utility model provides a plywood production saw limit sack cleaner, includes the shell body and set up in skeleton and the deashing system in the shell body, the inside space of shell body divide into dust removal cavity and clean cavity, the deashing system includes two sets of filter bags and filter cartridge, the filter cartridge set up in the filter bag; the filter box comprises an upper chassis, a lower chassis and a pipe sleeve, wherein a supporting shaft for connection is fixedly connected between the upper chassis and the lower chassis; the pipe sleeve is vertically and slidably connected with the upper chassis and the lower chassis; the pipe sleeve comprises a glass part and a fiber part which are fixedly connected with each other; activated carbon is filled between the upper chassis and the lower chassis; an input pipe is fixedly connected to the top surface of the upper chassis, and an output pipe is fixedly connected to the bottom surface of the lower chassis; the input pipe is used for flowing potassium permanganate liquid into the filter box, and the output pipe is used for flowing out the potassium permanganate liquid.

Optionally, a driving assembly for driving the pipe sleeve to move vertically is arranged on the upper chassis; the driving assembly comprises a driving motor, a gear set and a screw rod; the gear set comprises a plurality of transmission gears meshed with each other; the output shaft of the driving motor is fixedly connected with the transmission gear; the screw rod is in threaded transmission fit with the transmission gear; the lead screw is rotatably arranged in the glass part.

Optionally, a strip-shaped cavity is formed in the inner peripheral surface of the glass part, and the screw rod is rotatably arranged in the strip-shaped cavity; a sealing plate which is vertically arranged is fixedly arranged between the upper chassis and the lower chassis; the glass part is in sliding connection with the sealing plate through the strip-shaped cavity.

Optionally, the top surface of the filter bag is fixedly connected with an upper bottom plate, and the bottom surface of the filter bag is fixedly connected with a lower bottom plate; a first sliding groove is formed in the upper bottom plate along the radial direction of the upper bottom plate, and a first switch stator is arranged in the first sliding groove in a sliding manner; a compression spring I is fixedly arranged in the sliding groove I, and one end part of the compression spring is fixedly connected with the switch stator I; the top surface of the upper bottom plate is vertically provided with a sliding hole I communicated with the sliding groove I; the first sliding hole is internally provided with a first switch moving plate which can be in electric contact with the first switch moving plate after moving downwards; a guide groove is formed in one side wall of the sliding hole, and a guide piece extending into the guide groove is fixedly arranged on one side wall of the switch moving piece; a compression spring II fixedly connected with the guide piece is fixedly arranged in the guide groove and is used for driving the switch moving piece to reset upwards; an electromagnet I is fixedly arranged on the side wall, away from the slide hole I, in the slide groove I, and a metal sheet which can be magnetically adsorbed with the electromagnet I is fixedly arranged at one end part of the switch stator; the side wall of the guide plate is fixedly provided with a second switch moving plate, and the side wall of the guide groove is fixedly provided with a second switch stator which is electrically contacted with the second switch moving plate; the driving motor is connected with the first switch moving plate, the first switch stator and the second timer in series; the electromagnet I is connected with the switch moving plate II, the switch stator II and the timer I in series.

Optionally, a liquid outlet pipeline is arranged in the cleaning cavity; a liquid valve and a liquid pump are arranged on the liquid outlet pipeline; the liquid valve, the liquid pump and the timer are connected in series; the top surface of the bottom plate is provided with a switch groove, and a switch sheet is vertically arranged in the switch groove in a sliding manner; the bottom end of the fiber part can be abutted with the switch sheet; the side wall of the switch sheet is fixedly provided with a switch sheet IV; the switch moving plate IV is electrically connected with the liquid valve and the liquid pump; an electric sheet I which can be in electric contact with the switch moving sheet IV is fixedly arranged on the side wall of the switch groove; the first electric sheet is electrically connected with a power supply.

Optionally, an air outlet pipeline II is arranged in the cleaning cavity; an air valve and an air pump are arranged on the second air outlet pipeline; the air valve, the air pump and the timer are connected in series; the side wall of the switch sheet is fixedly provided with a switch sheet III; the switch moving plate III is electrically connected with the air valve and the air pump; the first electric sheet can be in electric contact with the third switch sheet.

Optionally, a side plate is fixedly connected between the upper bottom plate and the lower bottom plate; the filter bag comprises two filter screens which are respectively connected with the side plates in a sliding way along the vertical direction; annular holes which can be in sliding connection with the filter screen are respectively formed in the upper bottom plate and the lower bottom plate; a vibrating motor is fixedly arranged in the cleaning cavity; an output shaft of the vibration motor is fixedly connected with an arc-shaped plate which can be connected with the bottom surface of the filter bag; the arc plate is arranged in the annular hole of the lower bottom plate in a vertical sliding mode.

Optionally, a plurality of fans towards the filter box are respectively fixed on two sides of the side plate, and a temperature sensor and a humidity sensor are fixed on the inner peripheral surface of the cleaning chamber.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The application divides the space in the bag-type dust collector into a dust collection chamber and a cleaning chamber, so that one filter bag is in a cleaning state while the other filter bag is collecting dust. Save the time that the sack cleaner carries out the filter bag cleaning, promote whole dust removal efficiency.

2. According to the application, the activated carbon is arranged in the filter bag, and formaldehyde pollutants in the air flow are removed through the activated carbon after dust is removed from the filter bag, so that formaldehyde is prevented from being brought into the exhaust channel. Meanwhile, the application carries out potassium permanganate treatment on the activated carbon in the cleaning chamber to convert the absorbed formaldehyde into carbon dioxide, thereby further solving the desorption problem of the activated carbon. In the subsequent steps, the water vapor with the potassium permanganate diffuses into the box body, so that formaldehyde carried in dust can be relieved, and the possibility of secondary pollution is reduced.

3. The thermal movement of molecules can be accelerated after the temperature is increased; after the relative humidity is increased, the dust viscosity can be improved, and the dust raising condition is reduced; according to the application, the air flow in the cleaning cavity is increased in the drying process of the filter box, so that the ambient temperature and the ambient humidity are improved, and the dust on the surface of the filter bag is accelerated to peel off. Meanwhile, a temperature sensor is arranged in the cleaning chamber and used for detecting the ambient temperature, so that the filter bag is prevented from aging due to the excessive temperature; and a humidity sensor is arranged to detect the ambient humidity, so that dust is prevented from caking on the surface of the filter bag due to the excessive humidity.

Drawings

Fig. 1 is a schematic structural view of a sawing edge cloth bag dust collector according to an embodiment of the application.

FIG. 2 is a schematic diagram of an ash removal system according to an embodiment of the application.

Fig. 3 is a cross-sectional view of a circular plate in an embodiment of the application.

Fig. 4 is an enlarged schematic view of fig. 3 at a according to an embodiment of the present application.

Fig. 5 is a cross-sectional view of an upper chassis of an embodiment of the present application.

Fig. 6 is an enlarged schematic view of embodiment of the present application at B in fig. 5.

Fig. 7 is a cross-sectional view of the lower chassis of an embodiment of the present application.

Fig. 8 is an enlarged schematic view of fig. 7 at C in accordance with an embodiment of the present application.

Reference numerals: 1. a case; 11. an ash bucket; 12. a second electric sheet; 13. a dust removal chamber; 14. cleaning the chamber; 2. a skeleton; 21. an upper circular plate; 22. a lower circular plate; 23. a vertical rod; 24. sealing the plug; 25. a mounting groove; 26. a return spring; 3. a filter bag; 31. a side plate; 32. a filter screen; 33. an upper base plate; 34. a lower base plate; 35. an input tube; 36. an output pipe; 4. a filter box; 41. an upper chassis; 42. a lower chassis; 43. supporting a shaft; 44. a fiber section; 5. a glass portion; 51. a transmission gear; 52. a screw rod; 53. a strip-shaped cavity; 54. a convex plate; 55. a sealing plate; 56. a switch moving plate II; 57. a second switch stator; 6. an electromagnet I; 61. a first switch moving plate; 62. a first switch stator; 63. a first chute; 64. compressing a first spring; 65. an arc-shaped plate; 66. a guide piece; 67. compression spring II; 68. an annular groove I; 69. a first bulge; 7. a switch groove; 71. a switch sheet; 72. a switch rotor IV; 8. a switch moving plate V; 81. a second chute; 82. compression spring IV; 83. an annular hole; 9. a prismatic bar; 91. an outflow hole; 92. a driving motor; 93. a sliding hole I; 94. annular groove II; 95. and a second protrusion.

Detailed Description

The application is described in further detail below with reference to fig. 1-8.

The embodiment of the application discloses a cloth bag dust remover for sawing edges in plywood production. Referring to fig. 1 and 2, the trimming bag-type dust collector comprises an outer shell, a framework 2 arranged in the outer shell and a dust removing system. The outer shell comprises a cylindrical box body 1 and an ash bucket 11 fixedly connected to the bottom of the box body 1 in a funnel shape. The framework 2 and the ash removing system are arranged in the box body 1. The outer peripheral surface of the box body 1 is connected with an air inlet pipeline. The inner space of the box body 1 is divided into two semicircular dust removing chambers 13 and a cleaning chamber 14, and an air inlet pipeline is communicated with the dust removing chambers 13. The ash removal system comprises two groups of filter bags 3 and filter boxes 4 which are symmetrically arranged, and the filter bags 3 and the filter boxes 4 can rotate in the box body 1; the filter bag 3 and the filter box 4 are positioned in the dust removing cavity 13 and are used for filtering dust and formaldehyde; the filter bag 3 positioned in the cleaning chamber 14 is subjected to ash removal treatment, and the filter box 4 is subjected to formaldehyde removal treatment.

Referring to fig. 2, the frame 2 is fixed in the case 1. The frame 2 comprises two circular plates arranged in parallel and two vertical rods 23 fixed between the two circular plates, wherein the upper circular plate 21 is connected with the top surface of the box body 1. The lower circular plate 22 is connected with the bottom of the box body 1 through the edge rod 9. Specifically, the peripheral surface of the lower circular plate 22 is uniformly provided with a plurality of edge rods 9 along the circumferential direction of the lower circular plate, the end part of each edge rod 9 far away from the lower circular plate 22 is fixedly connected with the bottom of the peripheral surface of the box body 1, so that a fan-shaped annular gap is formed between two adjacent edge rods 9, and dust can fall into the dust hopper 11 conveniently.

Referring to fig. 2, the filter bag 3 is semi-circular, the top and bottom surfaces of the filter bag 3 are fixedly connected with bottom plates respectively, and the two bottom plates are connected with two circular plates in a rotating way respectively; the two bottom plates and the filter bag 3 form a hollow semi-cylindrical shaped filter chamber. The lower circular plate 22 is embedded with a stepping motor, and the output end of the stepping motor is connected with the bottom surface of the lower bottom plate 34 and is used for driving the filter bag 3 to rotate.

Referring to fig. 2, the filter bag 3 is formed by splicing two semicircular filter screens 32 to form a circular net bag. A side plate 31 is fixedly connected between the two bottom plates and is arranged along the radial direction of the bottom plates, and the side plate 31 divides the space in the filter bag 3 into two semicircular areas. The ends of the two screens 32 are slidably connected to the side plates 31, respectively. Permanent magnets are fixedly connected to the two side walls of the side plate 31 respectively, and metal sheets capable of being adsorbed by the permanent magnets are fixedly arranged on the side walls of the two vertical rods 23 respectively and used for positioning the filter bag 3 after the filter bag 3 stops rotating.

Specifically, the material of the filter bag 3 can be polyphenylene sulfide PPS, and a polytetrafluoroethylene coating is coated on the surface of the PPS. PPS has high temperature resistance, acid and alkali resistance, and oxidation resistance. The polytetrafluoroethylene coating has hydrophobic and oleophobic properties, so that the possibility of dust caking on the surface of the filter bag 3 can be reduced.

Specifically, the stepper motor is connected with the PLC through a stepper motor driver. After the switch is closed, the PLC outputs a pulse signal to the stepping motor driver to enable the stepping motor to rotate 180 degrees clockwise, and outputs an enabling signal to the stepping electric driver to enable the stepping motor to lock the position. After the pulse signal is sent, the PLC starts a timer, and after the timer counts 30 minutes, the previous operation is repeated; the output shaft is rotated for half a turn after the stepping motor is started, and then the rotation is stopped. One of the screens 32 is located in the cleaning chamber 14 and the other screen 32 is located in the dust removal chamber 13.

Referring to fig. 2, the filter cartridge 4 is fixed in the filter chamber, and the filter cartridge 4 rotates following the filter bag 3. Specifically, during rotation of the filter chambers, one of the cartridges 4 is positioned within the dedusting chamber 13 and the other is positioned within the cleaning chamber 14.

Referring to fig. 2 and 3, the filter cartridge 4 is a cylindrical cartridge body, the filter cartridge 4 includes an upper chassis 41 and a lower chassis 42, and a supporting shaft 43 for connection is fixedly connected between the upper chassis 41 and the lower chassis 42; in this embodiment, the upper chassis 41, the lower chassis 42, and the support shaft 43 are coaxially fixed. The filter box 4 further comprises a pipe sleeve, the pipe sleeve is wrapped on the peripheral sides of the upper chassis 41 and the lower chassis 42, and the pipe sleeve is vertically and slidably connected with the upper chassis 41 and the lower chassis 42. The pipe sleeve is a cylindrical hollow pipe body and comprises a glass part 5 and a fiber part 44 which are fixedly connected with each other; the bottom end of the glass part 5 is fixedly connected with the top end of the fiber part 44; the fibrous portion 44 is of the same material as the screen 32. Activated carbon is filled between the upper chassis 41 and the lower chassis 42.

Specifically, when the fiber portion 44 covers the peripheral side of the filter box 4, the filter box 4 is used for filtering the air flow, and the activated carbon in the filter box 4 adsorbs formaldehyde in the air flow; the glass part 5 is now located above the upper chassis 41. When the glass part 5 covers the periphery of the filter box 4, the filter box 4 is used for regenerating active carbon; the liquid potassium permanganate flows into the filter cartridge 4 and reacts with the activated carbon. Reacting potassium permanganate with formaldehyde to oxidize the formaldehyde into carbon dioxide and desorb the formaldehyde in the activated carbon; the fiber portion 44 is now located below the lower chassis 42.

Referring to fig. 3, an input pipe 35 is fixedly connected to the top surface of the upper chassis 41, and the input pipe 35 is used for flowing in liquid potassium permanganate and discharging air flow to be filtered. An output pipe 36 is fixedly connected to the bottom surface of the lower chassis 42, and the output pipe 36 is used for discharging potassium permanganate and inputting air flow to be filtered. The input pipe 35 is fixedly connected with the upper base plate 33, the output pipe 36 is fixedly connected with the lower base plate 34, and outflow holes 91 for gas and liquid flow are respectively formed at corresponding positions of the upper base plate 33 and the lower base plate 34.

Referring to fig. 3, two plugs 24 are slidably provided on the upper and lower disks 21 and 22, respectively. Two mounting grooves 25 are respectively formed in the upper circular plate 21 and the lower circular plate 22; preferably, the two mounting grooves 25 on the upper disk 21 and the lower disk 22 are symmetrically arranged, and the mounting groove 25 on the upper disk 21 is coaxially arranged with the mounting groove 25 on the lower disk 22. A return spring 26 is fixedly connected in the mounting groove 25, and the end part of the return spring 26 is fixedly connected with the plugging plug 24 and is used for pushing the plugging plug 24 to move to the outer side of the mounting groove 25. The sealing plug 24 is in a truncated cone shape, and the sealing plug 24 can be inserted into the outflow hole 91 for avoiding gas and liquid from overflowing; during the rotation of the upper base plate 33 and the lower base plate 34, the circular table surface of the plugging plug 24 can be abutted with the hole edge of the outflow hole 91, so that the plugging plug 24 is retracted into the mounting groove 25.

Specifically, the two plugs 24 of the upper disk 21 and the lower disk 22 are respectively located in the dust removal chamber 13 and the cleaning chamber 14. The two plugging plugs 24 on the upper circular plate 21 are provided with gas-liquid channels along the radial direction. Preferably, the gas-liquid channels are coaxially arranged along the height direction of the plugging plug 24. The upper circular plate 21 is positioned at the blocking plug 24 of the dust removal chamber 13 for discharging the filtered air flow, and the blocking plug 24 is positioned at the cleaning chamber 14 for feeding the potassium permanganate liquid and discharging the dry air flow. A gas liquid channel is arranged on a sealing plug 24 of the lower circular plate 22 in the cleaning chamber 14 and is used for discharging potassium permanganate liquid and inputting dry gas flow; the plugging plug 24 of the lower circular plate 22 in the dust removing chamber 13 is solid and is used for plugging the output pipe 36 so that the filtered air flows out from the input pipe 35.

Specifically, the top surface of the upper circular plate 21 is fixedly connected with a first air outlet pipeline and a second air outlet pipeline, and the first air outlet pipeline extends into a mounting groove 25 positioned in the dust removing cavity 13 and is communicated with a gas liquid groove of the sealing plug 24; the second outlet pipe extends into a mounting groove 25 in the cleaning chamber 14. A liquid outlet pipe is fixedly connected to the bottom surface of the lower circular plate 22 and extends into a mounting groove 25 positioned in the cleaning chamber 14.

The specific implementation principle in the dust removing chamber 13 is as follows: after the filtered air flows into the box body 1 through the air inlet pipeline, the air is firstly contacted with the filter screen 32, and dust in the air is trapped by the filter screen 32. At this time, the fiber portion 44 is on the peripheral side of the filter cartridge 4. The air flow entering the filtering chamber enters the filtering box 4 and is adsorbed by the activated carbon to remove formaldehyde carried in the air flow, and finally the filtered air flow flows into the first air outlet pipeline through the input pipe 35 and is discharged.

Referring to fig. 3 and 4, a driving assembly for driving the pipe sleeve to move vertically is provided on the upper chassis 41. The drive assembly includes a drive motor 92, a gear set, and a lead screw 52. The gear set comprises a plurality of transmission gears 51 meshed with each other, wherein one transmission gear 51 is fixedly connected with the output shaft of the driving motor 92 in a coaxial way; the drive motor 92 is embedded in the upper chassis 41. A mounting hole for passing through the screw 52 is coaxially provided in the other transmission gear 51. Specifically, the screw 52 is a ball screw, a ball nut in threaded engagement with the ball screw is fixedly disposed in the mounting hole, and the screw 52 moves vertically during rotation of the transmission gear 51.

Referring to fig. 3 and 4, a strip-shaped cavity 53 is formed in the inner peripheral surface of the glass portion 5, and a screw 52 is rotatably provided in the strip-shaped cavity 53. The outer peripheral surface of the upper chassis 41 is integrally formed with a convex plate 54 penetrating into the strip-shaped cavity 53, and one of the transmission gears 51 is rotatably arranged on the top surface of the convex plate 54; the lead screw 52 is disposed through the boss 54. A sealing plate 55 arranged vertically is fixedly arranged between the upper chassis 41 and the lower chassis 42; after the glass part 5 slides downwards, the sealing plate 55 is arranged in the strip-shaped cavity 53 in a vertical sliding manner and is used for sealing the strip-shaped cavity 53, so that the condition that potassium permanganate and active carbon enter the strip-shaped cavity 53 is reduced.

Referring to fig. 5 and 6, a control switch group is provided on the upper plate 33. The control switch group comprises a first switch component for controlling the on-off of the driving motor 92 and a second switch component for controlling the on-off of the first switch component. The first switch assembly includes a first switch moving plate 61 vertically slidably disposed on the top surface of the upper plate 33, and a first switch stator 62 axially slidably disposed in the upper plate 33 along the upper plate 33. A first chute 63 is formed in the upper bottom plate 33 along the radial direction of the upper bottom plate, and a first switch stator 62 is arranged in the first chute 63 in a sliding way; a first compression spring 64 is fixedly arranged in the first chute 63, and the end part of the first compression spring 64 is fixedly connected with the first switch stator 62 and is used for pushing the first switch stator 62 to reset towards the direction approaching to the first switch stator 61. The top surface of the upper bottom plate 33 is vertically provided with a first sliding hole 93 vertically communicated with the first sliding groove 63; the first switch moving plate 61 is vertically and slidably arranged in the first slide hole 93, and the first switch moving plate 61 can be in electrical contact with the first switch moving plate 62 after being moved downwards. The side wall of the sliding hole I93 is provided with a guide groove, and the side wall of the switch stator I62 is fixedly provided with a guide plate 66 extending into the guide groove; and a second compression spring 67 fixedly connected with the guide plate 66 is fixedly arranged in the guide groove, the second compression spring 67 is used for driving the first switch stator 62 to reset upwards, and the guide groove is used for limiting the moving distance of the first switch stator 62.

Specifically, when the compression spring II 67 is in a natural telescopic state, the switch rotor I61 extends out of the sliding hole I93, and the top surface of the upper circular plate 21 is provided with an annular groove I68 for accommodating the switch rotor I61; and a first bulge 69 which can be abutted against the top end of the first switch moving plate 61 is fixedly arranged in the first annular groove 68, and the first bulge 69 is positioned in the cleaning chamber 14. After the rotation of the upper disk 21 is stopped, the first switch piece 61 abuts against the first projection 69 and moves downward, so that the first switch piece 61 is in electrical contact with the first switch stator 62. When the first compression spring 64 is in a natural telescopic state, the first switch stator 62 is positioned below the first switch stator 61. The top end of the first switch moving plate 61 is provided with a round angle.

Referring to fig. 6, an electromagnet 16 is fixedly arranged on the side wall, far away from the sliding hole 93, of the sliding groove 63, and the electromagnet 6 is connected with a switch assembly II, a relay I and a timer I in series. Specifically, the output end of the first timer is electrically connected with the first coil of the relay, and the first electromagnet 6 is connected with the normally closed contact of the relay. After the timer I counts the unit time, the timer outputs a high level to the relay I, the relay I coil is electrified, and the electromagnet I6 is electrified; the timer is reset and counts again, and the timer outputs a low level to the relay I, the relay is powered off, and the electromagnet I6 is powered off. The end part of the first switch stator 62 is fixedly provided with a metal sheet which can be magnetically adsorbed with the first electromagnet 6, and the first switch stator 62 is adsorbed after the first electromagnet 6 is electrified, so that the first switch stator 62 is separated from the first switch stator 61.

Referring to fig. 6, the second switch assembly includes a second switch moving plate 56 fixed to the side wall of the guide plate 66 and a second switch stator 57 fixed to the side wall of the guide groove. When the compression spring two 67 is in a compressed state, the switch moving plate two 56 and the switch fixed plate two 57 are in an electric contact state, otherwise, are in a separated state. After the first switch moving plate 61 is contacted with the first bulge 69 and pressed to move downwards, the first timer is electrified and starts counting, and after unit time, the first electromagnet 6 is electrified and controls the first switch moving plate 62 to move, so that the first switch moving plate 61 is separated from the first switch moving plate 62.

Specifically, the first switch assembly is connected to the serial circuit of the driving motor 92, the second timer and the second relay. The output end of the second timer is electrically connected with the second coil of the relay, and the driving motor 92 is connected to the normally open contact of the second relay. After the first switch assembly is closed, the second coil of the relay is energized, and the drive motor 92 is started and drives the lead screw 52 to rotate for a unit number of turns. After the timer II finishes counting, the timer II outputs a low level to the relay II, the driving motor 92 is powered off, and the glass part 5 moves downwards to cover the periphery of the filter box 4. After the timer is finished, the first switch moving plate 61 and the first switch fixed plate 62 are in electrical contact again, and the timer counts again. The driving motor 92 is started again, and the ball screw 52 rotates until the top end of the ball screw contacts with the ball nut and then rotates reversely. After the second timer is completed, the fiber portion 44 is raised to cover the peripheral side of the filter cartridge 4. The lengths of the glass portion 5 and the fiber portion 44 are longer than the distance between the upper chassis 41 and the lower chassis 42, so that when the glass portion 5 covers the peripheral side of the filter cartridge 4, the top end of the glass portion 5 is higher than the upper chassis 41, and when the fiber portion 44 covers the peripheral side of the filter cartridge 4, the bottom end of the fiber portion 44 is lower than the lower chassis 42.

Specifically, the second air outlet pipeline and the second liquid outlet pipeline are respectively connected with the air flow channel and the liquid flow channel through three-way pipes. The second air outlet pipeline is respectively connected with the liquid inlet pipe and the air outlet pipe; the liquid outlet pipeline is respectively connected with a gas inlet pipe and a liquid outlet pipe. The liquid flow channel is used for conveying potassium permanganate solution; the gas flow channel is used for conveying high-temperature air for drying the activated carbon, and the high-temperature air is used for taking away moisture in the regenerated activated carbon and drying the activated carbon. The gas outlet pipe and the gas inlet pipe are respectively provided with a gas valve and a gas pump; the liquid outlet pipe and the liquid inlet pipe are respectively provided with a liquid valve and a liquid pump; the air valve and the liquid valve are all electromagnetic valves. The air valve, the air pump, the relay III, the timer III and the switch component III are connected in series; the liquid valve, the liquid pump, the relay IV and the timer IV are connected in series with the switch assembly IV.

Referring to fig. 5, the switch assembly three and the switch assembly four constitute a double throw switch. The double throw switch includes a switch slot 7 provided on the top surface of the lower plate 34, and a switch piece 71 provided in the switch slot 7 so as to slide vertically. Preferably, the switch groove 7 and the switch piece 71 are disposed below the fiber portion 44 after stopping rotation, and are located in the cleaning chamber 14. The side wall of the switch sheet 71 is fixedly provided with a switch sheet III in a switch assembly III and a switch sheet IV 72 in a switch assembly IV; the side wall of the switch groove 7 is fixedly provided with a first electric sheet which can be respectively in electric contact with the third switch moving sheet and the fourth switch moving sheet 72, and the first electric sheet is electrically connected with a power supply. The side wall of the switch sheet 71 is fixedly provided with a limit sheet, the side wall of the switch groove 7 is provided with a limit groove for accommodating the limit sheet, a compression spring III fixedly connected with the limit sheet is fixedly arranged in the limit groove, and the compression spring III is used for driving the switch sheet 71 to reset upwards.

Specifically, the switch moving plate IV 72 is positioned above the switch moving plate III, and when the compression spring III is in a natural telescopic state, the switch moving plate III and the electric plate I are in an electric contact state; the fiber portion 44 moves downward to abut against the tip of the switch piece 71 and push the switch piece 71 to retract toward the inside of the switch groove 7, the switch piece three is separated from the first electric piece, and the switch piece four 72 is in electric contact with the first electric piece.

Specifically, the output end of the timer IV is electrically connected with the coil of the relay IV, and the liquid pump and the liquid valve are both connected with the normally open contact of the relay IV. After the switch moving plate IV 72 is in electrical contact with the fixed plate, the liquid pump and the liquid valve are started; after the timer four times, the liquid pump and the liquid valve are closed. When the liquid pump and the liquid valve are opened, the potassium permanganate solution enters the filter cartridge 4 from above, and at this time, the glass portion 5 covers the peripheral side of the filter cartridge 4 and leaves the filter cartridge 4 from below.

Specifically, the output end of the third timer is electrically connected with the third coil of the relay, and the air pump and the air valve are both connected with the normally open contact of the third relay. After the third switch moving plate is in electrical contact with the stator, the air pump and the air valve are started; after the three times of the timer are finished, the air pump and the air valve are closed. The high-temperature gas enters the filter cartridge 4 from below the filter cartridge 4, and at this time, the fiber portion 44 covers the peripheral side of the filter cartridge 4 and leaves the filter cartridge 4 from above the filter cartridge 4 and from the peripheral side of the filter cartridge 4.

Referring to fig. 7, connecting bars are fixedly connected to both end surfaces of the filter bag 3, and are slidably connected to edges of the side plates 31 in the vertical direction. Preferably, the top surface and the bottom surface of the filter bag 3 are respectively fixedly connected with annular supporting rings for maintaining the semicircular shape of the filter bag 3; the end of the supporting ring is fixedly connected with the top end of the connecting strip. Annular holes 83 which can be in sliding connection with the support rings are respectively formed in the upper bottom plate 33 and the lower bottom plate 34, so that the filter bag 3 is vertically in sliding connection with the upper bottom plate 33 and the lower bottom plate 34; two filter bags 3 on both sides of the side plate 31 are slidably disposed in the annular holes 83. The filter bag 3 drops off dust attached to the surface of the filter bag 3 by vertically reciprocating movement.

Referring to fig. 7, a vibration motor is buried in the lower circular plate 22 located in the cleaning chamber 14. An arc-shaped plate 65 which can be connected with a supporting ring on the bottom surface of the filter bag 3 is horizontally fixedly connected on the output shaft of the vibration motor; the arc-shaped plate 65 is vertically arranged in the annular hole 83 of the lower bottom plate 34 in a sliding manner; when the lower plate 34 rotates, the arc plate 65 is slidably connected to the annular hole 83 along the circumferential direction of the annular hole 83. The top surface of the arc-shaped plate 65 is fixedly provided with a permanent magnet, and the bottom surface of the supporting ring is fixedly provided with a metal sheet which can be magnetically adsorbed with the permanent magnet, so that when the filter bag 3 positioned in the cleaning chamber 14 stops moving, the arc-shaped plate 65 can be connected with the supporting ring through the adsorption effect of the permanent magnet and the metal sheet.

Specifically, the vibration motor is connected in series with a timer five, a relay five and a switch assembly five. The output end of the timer five is electrically connected with the relay five coil, and the vibration motor is connected with the normally closed contact of the relay five. After the switch assembly is turned on, the timer is started to time, and the vibration motor is in a turned-off state; and after the timer five times, outputting low level to the relay five, starting the vibration motor, and driving the filter bag 3 to vertically reciprocate so as to enable dust on the surface of the filter bag 3 to fall off.

Referring to fig. 7 and 8, the switch assembly five includes a second chute 81 formed on the top surface of the lower circular plate 22, and a fifth switch sheet 8 vertically slidably disposed on the second chute 81, and a second electric sheet 12 electrically contacting the fifth switch sheet 8 is fixedly disposed on the inner wall of the second chute 81. The bottom surface of the switch moving plate five 8 is fixedly provided with a compression spring four 82, and the end part of the compression spring four 82 is fixedly connected with the switch moving plate five 8 and used for driving the switch moving plate five 8 to reset upwards. Specifically, when the compression spring four 82 is in a natural telescopic state, the switch moving plate five 8 and the electric plate two 12 are in a dislocation state, and after the switch moving plate five 8 is pressed and moved downwards, the switch moving plate five 8 is in electrical contact with the electric plate two 12. The bottom surface of the lower bottom plate 34 is provided with a second annular groove 94 for accommodating the switch moving plate five 8; a second protrusion 95 which can be abutted against the fifth switch moving plate 8 is fixedly arranged in the second annular groove 94; after the lower bottom plate 34 rotates to the position that the second protrusion 95 abuts against the fifth switch moving plate 8, the fifth switch moving plate 8 can be electrically contacted with the second electric plate 12. Rounded corners are formed at the top ends of the five 8 switch moving plates.

Specifically, after the timer five times, the vibration motor is started, and the fiber portion 44 is wrapped around the filter cartridge 4.

Specifically, a plurality of fans are respectively fixed on two sides of the side plate 31 for blowing air towards the direction of the filter bag 3. The case 1 is provided with a temperature sensor and a humidity sensor fixed to the inner peripheral surface of the cleaning chamber 14. When the cartridge 4 is in the dry stage in the cleaning chamber 14, the fiber portion 44 is wrapped around the periphery of the cartridge 4. The fan is started to increase the airflow in the cleaning chamber 14, and the airflow with moisture and a small amount of potassium permanganate in the filter box 4 is diffused into the cleaning chamber 14. The increase of the air humidity can improve the dust viscosity and reduce the dust emission phenomenon. Small amounts of potassium permanganate can decompose formaldehyde adhering to the dust. Since the temperature of the air flow diffused in the filter cartridge 4 is higher than the temperature of the air in the cleaning chamber 14, the internal molecular thermal motion can be improved after the temperature in the cleaning chamber 14 is raised.

Specifically, a temperature sensor and a humidity sensor are arranged, so that the fan rotating speed can be adjusted manually, and the diffusion speed of hot and humid air can be controlled.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. The utility model provides a plywood production saw limit sack cleaner, includes the shell body and set up in skeleton (2) and ash removal system in the shell body, its characterized in that: the dust removing system comprises two groups of filter bags (3) and filter boxes (4), and the filter boxes (4) are arranged in the filter bags (3); the filter box (4) comprises an upper chassis (41), a lower chassis (42) and a pipe sleeve, wherein a supporting shaft (43) for connection is fixedly connected between the upper chassis (41) and the lower chassis (42); the pipe sleeve is connected with the upper chassis (41) and the lower chassis (42) in a vertical sliding manner; the pipe sleeve comprises a glass part (5) and a fiber part (44) which are fixedly connected with each other; activated carbon is filled between the upper chassis (41) and the lower chassis (42); an input pipe (35) is fixedly connected to the top surface of the upper chassis (41), and an output pipe (36) is fixedly connected to the bottom surface of the lower chassis (42);

A driving component for driving the pipe sleeve to move vertically is arranged on the upper chassis (41); the drive assembly includes a drive motor (92), a gear set, and a lead screw (52); the gear set comprises a plurality of intermeshing transfer gears (51); the output shaft of the driving motor (92) is fixedly connected with the transmission gear (51); the lead screw (52) is in threaded transmission fit with the transmission gear (51); the lead screw (52) is rotatably arranged in the glass part (5);

An upper bottom plate (33) is fixedly connected to the top surface of the filter bag (3), and a lower bottom plate (34) is fixedly connected to the bottom surface of the filter bag; the two bottom plates are respectively connected with the two circular plates in a rotating way;

The outer shell comprises a box body (1), and the filter bag (3) and the filter box (4) can rotate in the box body (1); the filter bag (3) and the filter box (4) which are positioned in the dust removing cavity (13) are used for filtering dust and formaldehyde; the filter bag (3) positioned in the cleaning chamber (14) is subjected to ash removal treatment, and the filter box (4) is subjected to formaldehyde removal treatment;

the framework (2) comprises two circular plates which are arranged in parallel and two vertical rods (23) which are fixed between the two circular plates, and the upper circular plate (21) is connected with the top surface of the box body (1); the lower circular plate (22) is connected with the bottom of the box body (1);

the input pipe (35) is fixedly connected with the upper bottom plate (33), the output pipe (36) is fixedly connected with the lower bottom plate (34), and outflow holes (91) for flowing gas and liquid are respectively formed in the corresponding positions of the upper bottom plate (33) and the lower bottom plate (34);

The top surface of the upper circular plate (21) is fixedly connected with a first air outlet pipeline and a second air outlet pipeline, the first air outlet pipeline is arranged in the dust removing cavity (13), and the second air outlet pipeline is arranged in the cleaning cavity (14); the first air outlet pipeline and the second air outlet pipeline are communicated with the input pipe (35); a liquid outlet pipeline is fixedly connected to the bottom surface of the lower circular plate (22), and is arranged in the cleaning cavity (14) and communicated with the output pipe;

The second air outlet pipeline is respectively connected with a liquid inlet pipe and a gas outlet pipe; the liquid outlet pipeline is respectively connected with a gas inlet pipe and a liquid outlet pipe; the liquid inlet pipe and the liquid outlet pipe are used for conveying potassium permanganate solution; the gas inlet pipe and the gas outlet pipe are used for conveying high-temperature air for drying the activated carbon;

The lengths of the glass part (5) and the fiber part (44) are longer than the distance between the upper chassis (41) and the lower chassis (42), so that when the glass part (5) covers the periphery of the filter box (4), the top end of the glass part (5) is higher than the upper chassis (41), and when the fiber part (44) covers the periphery of the filter box (4), the bottom end of the fiber part (44) is lower than the lower chassis (42).

2. The plywood production trimming bag-type dust remover according to claim 1, wherein: a strip-shaped cavity (53) is formed in the inner peripheral surface of the glass part (5), and the screw rod (52) is rotatably arranged in the strip-shaped cavity (53); a sealing plate (55) which is vertically arranged is fixedly arranged between the upper chassis (41) and the lower chassis (42); the glass part (5) is connected with the sealing plate (55) in a sliding way through the strip-shaped cavity (53).

3. The plywood production trimming bag-type dust remover according to claim 1, wherein: a first sliding groove (63) is formed in the upper bottom plate (33) along the radial direction of the upper bottom plate, and a first switch stator (62) is arranged in the first sliding groove (63) in a sliding manner; a compression spring I (64) is fixedly arranged in the sliding groove I (63), and the end part of the compression spring I (64) is fixedly connected with the switch stator I (62); a sliding hole I (93) communicated with the sliding groove I (63) is vertically formed in the top surface of the upper bottom plate (33); the first sliding hole (93) is provided with a first switch moving plate (61) in a sliding mode, and the first switch moving plate (61) can be in electric contact with the first switch moving plate (62) after moving downwards; a guide groove is formed in the side wall of the first sliding hole (93), and a guide sheet (66) extending into the guide groove is fixedly arranged on the side wall of the first switch moving sheet (61); a compression spring II (67) fixedly connected with the guide piece (66) is fixedly arranged in the guide groove, and the compression spring II (67) is used for driving the switch moving piece I (61) to reset upwards; an electromagnet I (6) is fixedly arranged on the side wall, far away from the sliding hole I (93), in the sliding groove I (63), and a metal sheet which can be magnetically adsorbed with the electromagnet I (6) is fixedly arranged at the end part of the switch stator I (62); a second switch moving plate (56) is fixedly arranged on the side wall of the guide plate (66), and a second switch stator (57) which is electrically contacted with the second switch moving plate (56) is fixedly arranged on the side wall of the guide groove; the driving motor (92) is connected with the first switch moving plate (61), the first switch stator (62) and the second timer in series; the electromagnet I (6) is connected with the switch moving plate II (56), the switch stator II (57) and the timer I in series.

4. A plywood production trimming bag-type dust collector according to claim 3, wherein: the liquid outlet pipe and the liquid inlet pipe are respectively provided with a liquid valve and a liquid pump; the liquid valve, the liquid pump and the timer are connected in series; the top surface of the bottom plate (34) is provided with a switch groove (7), and a switch sheet (71) is vertically arranged in the switch groove (7) in a sliding manner; the bottom end of the fiber part (44) can be abutted with the switch sheet (71); a switch moving plate IV (72) is fixedly arranged on the side wall of the switch plate (71); the switch moving plate IV (72) is electrically connected with the liquid valve and the liquid pump; an electric sheet I which can be in electric contact with the switch moving sheet IV (72) is fixedly arranged on the side wall of the switch groove (7); the first electric sheet is electrically connected with a power supply.

5. The plywood production trimming bag-type dust remover according to claim 4, wherein: the gas inlet pipe and the gas outlet pipe are respectively provided with a gas valve and a gas pump; the air valve, the air pump and the timer are connected in series; the side wall of the switch sheet (71) is fixedly provided with a switch sheet III; the switch moving plate III is electrically connected with the air valve and the air pump; the first electric sheet can be in electric contact with the third switch sheet.

6. A plywood production trimming bag-type dust collector according to claim 3, wherein: a side plate (31) is fixedly connected between the upper bottom plate (33) and the lower bottom plate (34); each filter bag (3) comprises a filter screen (32) which is connected with the side plate (31) in a sliding way along the vertical direction; annular holes (83) which can be in sliding connection with the filter screen (32) are respectively formed in the upper bottom plate (33) and the lower bottom plate (34); a vibrating motor is fixedly arranged in the cleaning chamber (14); an arc-shaped plate (65) which can be connected with the bottom surface of the filter bag (3) is fixedly connected to the output shaft of the vibration motor; the arc-shaped plate (65) is arranged in the annular hole (83) of the lower bottom plate (34) in a vertical sliding mode.

7. The plywood production trimming bag-type dust remover according to claim 6, wherein: a plurality of fans which are arranged towards the filter box (4) are respectively and fixedly arranged on two sides of the side plate (31), and a temperature sensor and a humidity sensor are fixedly arranged on the inner peripheral surface of the cleaning chamber (14).