Activated carbon adsorption device for waste gas of double-screw extruder

Abstract

The invention relates to the technical field of efficient activated carbon purification, and discloses an activated carbon adsorption device for waste gas of a double-screw extruder, an adsorption inner seat is rotatably arranged in an adsorption outer seat in a manner of adhering to the wall, and a plurality of groups of activated carbon filtering units are uniformly arranged on the periphery of the edge of the adsorption inner seat. A pressing plate descends to act on an ejector rod, so that the ejector rod drives a rod plug to move downwards along a hydraulic oil cavity after being stressed to extrude hydraulic oil in the hydraulic oil cavity, and the hydraulic oil is injected into an expansion type oil bag through an oil pipe, so that the oil bag is further expanded and enters an activated carbon filtering unit; meanwhile, a corrugated metal sleeve at the bottom of the expansion type oil bag is fully expanded and attached to the upper end face of the activated carbon filter screen after being subjected to hydraulic acting force, then a horizontal telescopic rod drives a movable frame to linearly move leftwards, and therefore the corrugated metal sleeve pushes activated carbon particles to slide leftwards through a scraping part to conduct scraping; and finally, the waste is transferred into the material changing chamber from the activated carbon filter screen, so that the effect of automatically cleaning the waste is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-efficiency activated carbon purification, and particularly relates to an activated carbon adsorption device for the waste gas of a twin-screw extruder. Background Art

[0002] A large amount of waste gas is generated during the production process of a twin-screw extruder. The waste gas contains pollutants such as volatile organic compounds, plastic particles, odor gases, and high-temperature gases. An activated carbon adsorption device is required to purify the waste gas. The core component of the activated carbon adsorption device is high-efficiency activated carbon particles. The activated carbon has a developed pore structure inside, including micropores (<2 nm), mesopores (2 - 50 nm), and macropores (>50 nm). Its surface area can reach 800 - 1500 m² / g17. Pollutant molecules are adsorbed onto the surface of the activated carbon by the van der Waals force through contact with the pores. At the same time, the physical adsorption process has no specific selectivity and can capture various organic molecules, particles, and odor components in the waste gas simultaneously.

[0003] There are many technical defects in the existing activated carbon adsorption devices for waste gas. First, the waste gas discharged from the extruder carries the high temperature inside the machine. When the high-temperature waste gas passes through the activated carbon adsorption device, it will cause a significant reduction in the adsorption capacity of the activated carbon, thereby reducing the waste gas purification effect. Currently, there is a lack of effective cooling measures for this technical problem. Second, after the adsorption performance of the activated carbon reaches saturation, it is necessary to replace the activated carbon particles in the filter in a timely manner. However, currently, the cleaning of the old activated carbon particles and the filling of new activated carbon particles are both manual operations, which are time-consuming and laborious. Third, the activated carbon adsorption device cannot adjust the filtration intensity of the activated carbon according to the waste gas with different pollution degrees, and the flexibility of use is low.

[0004] In summary, considering that the existing facilities cannot meet the working requirements, for this reason, we propose an activated carbon adsorption device for the waste gas of a twin-screw extruder. Summary of the Invention

[0005] The main purpose of the present invention is to provide an activated carbon adsorption device for the waste gas of a twin-screw extruder, which can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows: An activated carbon adsorption device for the waste gas of a twin-screw extruder includes an adsorption outer seat. A plurality of groups of legs are evenly welded to the lower edge of the adsorption outer seat. The number of the legs is preferably 3 - 4 groups. An adsorption inner seat is rotatably arranged along the inner wall of the adsorption outer seat. A plurality of groups of activated carbon filtration units are evenly arranged around the edge position of the adsorption inner seat. The number of the activated carbon filtration units is preferably 4 - 8 groups. The bottom of the activated carbon filtration unit includes an activated carbon filter screen, and the activated carbon filter screen is covered with activated carbon particles.

[0007] As a preferred embodiment of the activated carbon adsorption device for the waste gas of a twin-screw extruder according to the present invention, wherein: a support roller is vertically and fixedly arranged at the middle position of the lower end surface of the adsorption inner seat, a flat large bearing seat is sleeved at the lower end of the support roller, a large gear is sleeved in the middle of the support roller, a small gear is meshed on one side of the large gear, the small gear is sleeved on the output shaft of a first servo motor, and the first servo motor is vertically fixed.

[0008] As a preferred embodiment of the activated carbon adsorption device for the waste gas of a twin-screw extruder according to the present invention, wherein: a support platform is arranged on the upper end surface of the adsorption outer seat, a communication seat is arranged inside the adsorption outer seat and the support platform in an upward communication manner, an annular air supply pipe is connected to the upper end of the communication seat, an air inlet pipe is connected to the end of the annular air supply pipe far away from the communication seat, a spiral cooling pipe is uniformly wrapped outside the annular air supply pipe, a refrigerant is placed in the spiral cooling pipe, a plurality of groups of vaporization diversion short pipes are uniformly connected to the upper end surface of the spiral cooling pipe, and the number of the diversion short pipes is preferably 20-30 groups.

[0009] As a preferred embodiment of the activated carbon adsorption device for the waste gas of a twin-screw extruder according to the present invention, wherein: a flat annular ventilation seat is installed on the upper end surface of the support platform, a fan is installed at one end of the flat annular ventilation seat, an exhaust pipe is connected to the other end of the flat annular ventilation seat, a flow channel is opened inside the flat annular ventilation seat, the plurality of groups of vaporization diversion short pipes all extend towards the flow channel, and a refrigerant liquefier connected to the lower end of the vaporization diversion short pipe is fixedly installed in the middle of the flow channel.

[0010] As a preferred embodiment of the activated carbon adsorption device for the waste gas of a twin-screw extruder according to the present invention, wherein: a telescopic cylinder is installed on the inner surface of the upper end of the adsorption outer seat through two riveting pieces, a horizontal telescopic rod is movably arranged outside the telescopic cylinder, a moving frame is fixedly arranged at the end of the horizontal telescopic rod, a punching cylinder is vertically installed inside the moving frame, a punching rod is movably arranged downward inside the punching cylinder, a pressing plate is welded at the lower end of the punching rod, and the pressing plate acts on an oil feeder.

[0011] The oil feeder includes an arc oil cylinder, a hydraulic oil cavity, a top rod, a rod plug, a return spring and a oil pipe. The arc oil cylinder is fixed inside the moving frame, a hydraulic oil cavity is opened inside the arc oil cylinder, the top rod extends into the hydraulic oil cavity, the upper end of the top rod abuts against the pressing plate, a rod plug is installed at the lower end of the top rod, the rod plug is slidably sealed in the hydraulic oil cavity, a return spring sleeved outside the top rod is connected between the rod plug and the barrel surface of the arc oil cylinder, and an oil pipe is connected to the lower end of the arc oil cylinder.

[0012] As a preferred embodiment of the activated carbon adsorption device for the waste gas of a twin-screw extruder according to the present invention, the following is provided: the oil pipe is inserted downward into the positioning sleeve, an expandable oil bladder is installed downward inside the positioning sleeve, the expandable oil bladder extends downward through the lower end surface of the moving frame, a corrugated metal sleeve is wrapped around the outer side of the lower end of the expandable oil bladder, the corrugated metal sleeve extends into the activated carbon filtration unit, a scraping part is arranged on the lower end surface of the corrugated metal sleeve, and the scraping part acts on the activated carbon particles.

[0013] As a preferred embodiment of the activated carbon adsorption device for the waste gas of a twin-screw extruder according to the present invention, the following is provided: a feeding hopper is arranged on the upper end surface of the moving frame, a distributing wheel is rotatably arranged inside the moving frame and directly below the feeding hopper, the distributing wheel is located on the right side of the oil feeder, a driving shaft is splined at the middle of the distributing wheel, both ends of the driving shaft are fixed to the inner wall of the moving frame by bearing seats, one end of the driving shaft extends outward and is connected to a second servo motor through a coupling, a number of quantitative grooves are evenly arranged on the wheel surface of the distributing wheel, the number of the quantitative grooves is preferably 2-4 groups, an opening for a part of the quantitative grooves to extend out is arranged on the lower end surface of the moving frame, and baffle plates are symmetrically installed on both sides of each activated carbon filtration unit, and the bottom of the distributing wheel extends into the baffle plates.

[0014] As a preferred embodiment of the activated carbon adsorption device for the waste gas of a twin-screw extruder according to the present invention, the following is provided: a material-changing box is installed on the outer side of the adsorption outer seat, a material-changing chamber is arranged inside the material-changing box, the material-changing chamber is communicated with the adsorption inner seat, the material-changing chamber is for the moving frame to extend into, a feeding pipe communicated with the material-changing chamber is installed on the upper end surface of the material-changing box, an activated carbon preparation hopper is arranged at the upper end of the feeding pipe, and a waste discharge channel is obliquely installed at the right lower position of the lower end surface of the material-changing box, and the waste discharge channel is communicated with the material-changing chamber.

[0015] As a preferred embodiment of the activated carbon adsorption device for the waste gas of a twin-screw extruder according to the present invention, the following is provided: a centering positioning shaft is arranged at the middle position of the upper end of the support roller and below the adsorption inner seat, a damping bearing is sleeved on the outer side of the positioning shaft, a turntable is sleeved on the outer side of the damping bearing, a number of curved spring grooves are evenly arranged on the upper end surface of the turntable, the number of the curved spring grooves is preferably 3-6 groups, a curved spring is installed in each curved spring groove, one end of the curved spring is fixed to the groove wall of the curved spring groove, the other end of the curved spring is connected to the end of a stop column, and the stop column is welded to the lower end surface of the adsorption inner seat and extends into the curved spring groove. As a preferred embodiment of the activated carbon adsorption device for the waste gas of the twin-screw extruder described in the present invention, the following is provided: A number of groups of lower-layer filtering units are evenly arranged on the outer side surface of the turntable in a circumferential manner. A number of groups of the lower-layer filtering units and the activated carbon filtering units are alternately distributed up and down in sequence. The number of the lower-layer filtering units and the activated carbon filtering units is the same, and is preferably 4-8 groups.

[0016] As a preferred embodiment of the activated carbon adsorption device for the waste gas of the twin-screw extruder described in the present invention, the following is provided: A push rod motor is installed on the outer adsorption seat. A multi-stage push rod extends horizontally outward from the inside of the push rod motor. The multi-stage push rod extends into the inside of the outer adsorption seat. A side baffle is clamped at the end of the multi-stage push rod. The side baffle acts on the side surface of one of the groups of lower-layer filtering units.

[0017] The present invention provides an activated carbon adsorption device for the waste gas of a twin-screw extruder through improvement. Compared with the prior art, it has the following significant improvements and advantages: On the one hand, the high-temperature waste gas slowly flows in a circular manner through the annular air supply pipe. During the flowing process, it will transfer its own heat to the surrounding spiral cooling pipes, and the heat is timely absorbed by the refrigerant therein. The spiral cooling pipes are spirally wound and arranged by making full use of the limited space, increasing the contact area with the annular air supply pipe, significantly improving the cooling effect, thereby realizing the rapid cooling of the flue gas and solving the adverse impact of the high-temperature waste gas on the device. On the other hand, after the refrigerant absorbs heat, it will vaporize. After the steam accumulates in the spiral cooling pipes, it overflows evenly and timely through a number of groups of vaporization diversion short pipes, achieving the purpose of timely and evenly discharging outward, avoiding interfering with the cooling process. The blower is started to generate a cold air flow that continuously circulates in the flow channel of the planar annular ventilation seat, effectively cooling the refrigerant liquefier, so that the steam inside quickly reaches the liquefaction temperature and then re-liquefies into the refrigerant, significantly improving the liquefaction speed of the refrigerant liquefier by using the circular flow mode.

[0018] Start the first servo motor. Through a series of driving support rollers, the inner adsorption seat makes an intermittent circular motion, which can alternately let each group of activated carbon filtering units filter the waste gas in the communication seat, ensuring that the activated carbon filtering units have sufficient adsorption and buffering time and improving the adsorption efficiency.

[0019] First, start the stamping cylinder. The pressure plate descends and acts on the ejector rod. After the ejector rod is stressed, it drives the piston rod to move downward along the hydraulic oil chamber, squeezing the hydraulic oil in the hydraulic oil chamber. The hydraulic oil is injected into the expandable oil bag through the oil pipe, causing the originally hydraulic oil-filled oil bag to further expand and enter the interior of the activated carbon filtration unit, where it is in a wall-attached state. At the same time, the corrugated metal sleeve at the bottom of the expandable oil bag, which was originally in a contracted state, fully expands under the hydraulic force and fits on the upper end face of the activated carbon filter mesh. Then, let the horizontal telescopic rod drive the moving frame to move linearly to the left, so that the corrugated metal sleeve uses the scraping part to push the activated carbon particles to slide to the left for scraping, and finally transfer them from the activated carbon filter mesh to the material-changing chamber, achieving the function of automatically cleaning waste, saving time and effort.

[0020] The distribution wheel makes a circular motion. During the upward movement of the quantitative groove, it receives part of the activated carbon particles in the receiving hopper until it is filled. Then, during the downward movement of the quantitative groove, the activated carbon particles are directly poured out from the opening position and laid within a certain range of the activated carbon filter mesh. Let the stamping rod retract upward by a small distance, the oil storage volume in the hydraulic oil chamber becomes larger, and part of the hydraulic oil in the expandable oil bag flows back to the hydraulic oil chamber due to the pressure difference, causing the expanded oil bag to contract upward by a small distance. Driven by the horizontal telescopic rod, the scraping part moves linearly to the right to spread the layer of activated carbon particles just laid on the activated carbon filter mesh, improving the uniformity of the laying of the activated carbon particles. Repeat this process multiple times until the entire activated carbon filter mesh is covered with new activated carbon particles, achieving the purpose of automatic and uniform filling, saving time and effort.

[0021] Start the push rod motor. The multi-stage push rod extends and drives the side baffle to move to the side of one group of lower-layer filter units. Then, start the first servo motor. Through a series of transmissions, the support roller drives the adsorption inner seat to rotate by a certain angle, so that several groups of activated carbon filter units and several groups of lower-layer filter units are aligned up and down to form a double-layer filtration state, increasing the filtration intensity. When the multi-stage push rod drives the side baffle away from the position of the lower-layer filter unit, several groups of compressed curved springs reset and elongate, pushing the entire turntable to rotate in the reverse direction and return to its original position, reverting to the single-layer filtration state again. The filtration mode can be flexibly adjusted according to different pollution degrees, and the applicable range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an activated carbon adsorption device for the waste gas of a twin-screw extruder of the present invention in one direction; Figure 2 It is a schematic diagram of the overall structure of an activated carbon adsorption device for the waste gas of a twin-screw extruder of the present invention in another direction; Figure 3 It is a schematic diagram of the external structure of the adsorption inner seat of the present invention; Figure 4Schematic diagram of the drive structure of the adsorption inner seat of the present invention; Figure 5 Cross-sectional view of the planar annular ventilation seat of the present invention; Figure 6 External connection schematic diagram of the material changing box in the second embodiment of the present invention; Figure 7 Internal structure schematic diagram of the adsorption outer seat in the second embodiment of the present invention; Figure 8 External structure schematic diagram of the moving frame of the present invention; Figure 9 External connection schematic diagram of the expandable oil bag of the present invention; Figure 10 Cross-sectional view of the oil supply device of the present invention; Figure 11 Specific structure schematic diagram of the material distribution wheel of the present invention; Figure 12 Relative position schematic diagram of the lower layer filtering unit and the activated carbon filtering unit in the third embodiment of the present invention; Figure 13 Installation position schematic diagram of the turntable in the third embodiment of the present invention; Figure 14 Upper end structure schematic diagram of the support roller in the third embodiment of the present invention.

[0023] In the figure: 1, adsorption outer seat; 2, support leg; 3, adsorption inner seat; 4, activated carbon filtering unit; 5, activated carbon filter screen; 6, baffle plate; 10, support roller; 11, planar large bearing seat; 12, large gear; 13, small gear; 14, first servo motor; 20, support table; 21, communication seat; 22, annular air supply pipe; 23, air inlet pipe; 24, spiral cooling pipe; 25, vaporization diversion short pipe; 30, planar annular ventilation seat; 31, fan; 32, exhaust pipe; 33, flow channel; 34, refrigerant liquefier; 40, telescopic cylinder; 41, riveting piece; 42, horizontal telescopic rod; 43, moving frame; 50, stamping cylinder; 51, stamping rod; 52, pressing plate; 53, oil supply device; 531, arc oil cylinder; 532, hydraulic oil cavity; 533, ejector rod; 534, rod plug; 535, return spring; 536, oil pipe; 54, positioning sleeve; 55, expandable oil bag; 56, corrugated metal sleeve; 57, scraping part; 60, receiving hopper; 61, opening; 62, material distribution wheel; 63, drive shaft; 64, bearing seat; 65, second servo motor; 66, quantitative tank; 70, material changing box; 71, blanking pipe; 72, activated carbon preparation hopper; 73, waste discharge channel; 80, positioning shaft; 81, damping bearing; 82, turntable; 83, stop column; 84, curved spring groove; 85, curved spring; 86, lower layer filtering unit; 90, push rod motor; 91, multi-stage push rod; 92, side baffle. Detailed implementation manners

[0024] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0025] As Figures 1-5 shown, this embodiment provides an activated carbon adsorption device for the waste gas of a twin-screw extruder, including an adsorption outer seat 1. A plurality of groups of legs 2 are evenly welded to the lower edge of the adsorption outer seat 1, and the legs 2 play a supporting role. An adsorption inner seat 3 is rotatably arranged along the inner wall of the adsorption outer seat 1 to play a limiting role. A plurality of groups of activated carbon filtering units 4 are evenly arranged around the edge position of the adsorption inner seat 3. The bottom of the activated carbon filtering unit 4 includes an activated carbon filter screen 5, and the activated carbon filter screen 5 is covered with activated carbon particles.

[0026] Among them, a support roller 10 is vertically and fixedly arranged at the middle position of the lower end surface of the adsorption inner seat 3. A flat large bearing seat 11 is sleeved at the lower end of the support roller 10. A large gear 12 is sleeved in the middle of the support roller 10. A small gear 13 is meshed on one side of the large gear 12. The small gear 13 is sleeved on the output shaft of the first servo motor 14, and the first servo motor 14 is vertically fixed, as Figure 2 and Figure 4 shown.

[0027] Furthermore, a support platform 20 is arranged on the upper end surface of the adsorption outer seat 1. A communication seat 21 is upwardly communicated inside the adsorption outer seat 1 and the support platform 20. The upper end of the communication seat 21 is connected to an annular air supply pipe 22. One end of the annular air supply pipe 22 far from the communication seat 21 is connected to an air inlet pipe 23, as Figure 1 and Figure 2 shown.

[0028] Among them, a spiral cooling pipe 24 is evenly wrapped outside the annular air supply pipe 22. The spiral cooling pipe 24 is spirally wound to increase the contact area with the annular air supply pipe 22. A refrigerant is placed inside the spiral cooling pipe 24. A plurality of groups of vaporization diversion short pipes 25 are evenly connected to the upper end surface of the spiral cooling pipe 24, as Figure 1 and Figure 2 shown.

[0029] Furthermore, a flat annular ventilation seat 30 is installed on the upper end surface of the support platform 20. A fan 31 is installed at one end of the flat annular ventilation seat 30. The other end of the flat annular ventilation seat 30 is connected to an exhaust pipe 32, as Figure 1 and Figure 2 shown.

[0030] Among them, a flow channel 33 is provided inside the planar annular ventilation seat 30, and several groups of vaporization guiding short pipes 25 all extend towards the flow channel 33. A refrigerant liquefier 34 connected to the lower ends of the vaporization guiding short pipes 25 is fixedly installed in the middle of the flow channel 33. The refrigerant liquefier 34 and the spiral cooling pipe 24 are connected by a pressure pump, as Figure 1 and Figure 5 shown.

[0031] When this embodiment is in use, the high-temperature waste gas generated by the extruder is injected from the intake pipe 23, and slowly flows in a circle through the annular air supply pipe 22. During the flowing process, its own heat will be transferred to the surrounding spiral cooling pipe 24, and the heat will be promptly absorbed by the refrigerant therein, so as to realize the rapid cooling of the flue gas. Then the flue gas is injected into the interior of the adsorption outer seat 1 from the communication seat 21, contacts with one of the activated carbon filtering units 4, and the macromolecular pollutants and particulate matters in it are adsorbed by the activated carbon particles on the activated carbon filter net 5, and then discharged downward.

[0032] After the refrigerant absorbs heat, it will vaporize to form steam. After the steam accumulates in the spiral cooling pipe 24, it uniformly overflows outward in a timely manner through several groups of vaporization guiding short pipes 25 and enters the refrigerant liquefier 34 centrally. At this time, the blower 31 is turned on to generate a cold air flow that continuously flows in a circle in the flow channel 33 of the planar annular ventilation seat 30, effectively cools the refrigerant liquefier 34, so that the steam inside quickly reaches the liquefaction temperature and then re-liquefies into refrigerant. Then the refrigerant is regularly injected into the spiral cooling pipe 24 through the pressure pump to realize recycling.

[0033] By starting the first servo motor 14, the small gear 13 rotates, and the large gear 12 is caused to rotate through meshing and deceleration. The support roller 10 drives the adsorption inner seat 3 to perform an intermittent circular motion, so that each group of activated carbon filtering units 4 can take turns to filter the waste gas in the communication seat 21, ensuring that the activated carbon filtering units 4 have sufficient adsorption and buffering time and improving the adsorption efficiency. Embodiment Two

[0034] On the basis of Embodiment One, as Figures 1-11 shown, two groups of riveting pieces 41 are used to install a telescopic cylinder 40 on the upper inner surface of the adsorption outer seat 1. A horizontal telescopic rod 42 is movably arranged outward inside the telescopic cylinder 40. A moving frame 43 is fixedly arranged at the end of the horizontal telescopic rod 42. The moving frame 43 is located above the adsorption inner seat 3.

[0035] Among them, a stamping cylinder 50 is vertically installed inside the moving frame 43. A stamping rod 51 is movably arranged downward inside the stamping cylinder 50. A pressing plate 52 is welded to the lower end of the stamping rod 51. The pressing plate 52 acts on the oil feeder 53, as Figures 7-9 shown.

[0036] Specifically, the oil feeder 53 includes an arc oil cylinder 531, a hydraulic oil chamber 532, a push rod 533, a rod plug 534, a return spring 535, and a tubing 536, as Figure 10 shown.

[0037] In this embodiment, the arc oil cylinder 531 is fixed inside the moving frame 43. A hydraulic oil chamber 532 is provided inside the arc oil cylinder 531. The push rod 533 extends into the hydraulic oil chamber 532. The upper end of the push rod 533 abuts against the pressure plate 52. A rod plug 534 is installed at the lower end of the push rod 533. The rod plug 534 is slidably and sealingly arranged in the hydraulic oil chamber 532. A return spring 535 sleeved outside the push rod 533 is connected between the rod plug 534 and the cylinder surface of the arc oil cylinder 531. The lower end of the arc oil cylinder 531 is connected and provided with a tubing 536.

[0038] Further, the tubing 536 is inserted downward into the positioning sleeve 54. The positioning sleeve 54 plays a role in connection and positioning. An expandable oil bladder 55 is installed downward inside the positioning sleeve 54. The expandable oil bladder 55 has the performance of deformation and reset. The expandable oil bladder 55 extends downward through the lower end surface of the moving frame 43, as Figure 9 shown.

[0039] Specifically, a corrugated metal sleeve 56 is wrapped around the outer side of the lower end portion of the expandable oil bladder 55. The corrugated metal sleeve 56 is formed by pressing a metal material with the performance of deformation and reset. The corrugated metal sleeve 56 extends into the activated carbon filtering unit 4. A scraping part 57 is provided on the lower end surface of the corrugated metal sleeve 56. The scraping part 57 acts on the activated carbon particles (in the initial state, the scraping part 57 directly abuts downward against the right edge of the activated carbon filter mesh 5), as Figure 9 shown.

[0040] Among them, a feeding hopper 60 (a weighing sensor can be installed in the feeding hopper 60) is provided on the upper end surface of the moving frame 43. A distributing wheel 62 is rotatably arranged inside the moving frame 43 and directly below the feeding hopper 60. The distributing wheel 62 is located on the right side of the oil feeder 53. A driving shaft 63 is splined at the middle of the distributing wheel 62. Both ends of the driving shaft 63 are fixed to the inner wall of the moving frame 43 by bearing seats 64. One end of the driving shaft 63 extends outward and is connected by a coupling to a second servo motor 65, as Figure 7 、 Figure 8 、 Figure 11 shown.

[0041] In this embodiment, a number of groups of quantitative grooves 66 are evenly formed on the wheel surface of the distributing wheel 62. An opening 61 for a part of the quantitative grooves 66 to extend out is formed on the lower end surface of the moving frame 43. Baffle plates 6 are symmetrically installed on both sides of each activated carbon filtering unit 4. The baffle plates 6 play a role in blocking materials and limiting, preventing the materials from splashing out during the downward movement of the quantitative grooves 66. The baffle plates 6 allow the bottom of the distributing wheel 62 to extend in, asFigure 8 and Figure 11 as shown

[0042] Furthermore, a refueling box 70 is installed on the outer side surface of the adsorption outer seat 1. A refueling chamber is provided inside the refueling box 70. The refueling chamber is communicated with the adsorption inner seat 3. A connection port is penetrated through the left and right of the adsorption outer seat 1. The connection interfaces are respectively docked with the refueling chamber and the activated carbon filtering unit 4. The refueling chamber is for the movable frame 43 to extend into. A blanking pipe 71 communicated with the refueling chamber is installed on the upper end surface of the refueling box 70. A discharge valve is installed on the blanking pipe 71. An activated carbon stock hopper 72 is arranged at the upper end of the blanking pipe 71. A waste discharge channel 73 is obliquely installed at the right position of the lower end surface of the refueling box 70. The waste discharge channel 73 is communicated with the refueling chamber, as Figure 6 shown

[0043] When this embodiment is in use, when it is necessary to replace the activated carbon particles on the activated carbon filter screen 5, first start the stamping cylinder 50. The stamping rod 51 drives the pressing plate 52 to descend and act on the ejector rod 533, so that the ejector rod 533 drives the rod plug 534 to move downward along the hydraulic oil chamber 532 after being stressed (the return spring 535 is stretched), squeezing the hydraulic oil in the hydraulic oil chamber 532. The hydraulic oil is injected into the expandable oil bag 55 through the oil pipe 536, so that the oil bag originally filled with hydraulic oil further expands and expands downward, enters the inside of the activated carbon filtering unit 4, and is in a wall-attached state. At the same time, the corrugated metal sleeve 56 originally in a contracted state at the bottom of the expandable oil bag 55 fully expands under the hydraulic action and fits on the upper end surface of the activated carbon filter screen 5.

[0044] Then start the telescopic cylinder 40. The horizontal telescopic rod 42 drives the movable frame 43 to move linearly to the left. Thus, the corrugated metal sleeve 56 uses the scraping part 57 to push the activated carbon particles to slide to the left for scraping, and finally transfers them from the activated carbon filter screen 5 to the refueling chamber (this process can be repeated to ensure thorough scraping). The adsorbed saturated activated carbon particles are discharged downward from the waste discharge channel 73 position. Then the receiving hopper 60 moves to directly below the blanking pipe 71 in the refueling chamber, and the discharge valve is opened. Part of the activated carbon particles in the activated carbon stock hopper 72 are injected into the receiving hopper 60 from the blanking pipe 71 until the receiving hopper 60 is filled (or reaches the weighing value of the weighing sensor).

[0045] Then, the horizontal telescopic rod 42 drives the moving frame 43 to retract into the activated carbon filtering unit 4. First, start the second servo motor 65, the drive shaft 63 rotates, driving the material distribution wheel 62 to perform a circular motion. During the upward movement of the metering groove 66, it receives a part of the activated carbon particles in the receiving hopper 60 until it is full. Then, during the downward movement of the metering groove 66, the activated carbon particles are directly poured out from the opening 61 position and laid within a certain range of the activated carbon filter mesh 5, forming an activated carbon particle layer. Let the punching rod 51 retract upward by a small distance, and the stretched return spring 535 drives the rod plug 534 upward, causing the oil storage volume in the hydraulic oil chamber 532 to increase. Part of the hydraulic oil in the expandable oil bladder 55 flows back into the hydraulic oil chamber 532 due to the pressure difference, so that the expanded oil bladder contracts upward by a small distance (ensuring that the scraping part 57 is at an appropriate paving height). Driven by the horizontal telescopic rod 42, the scraping part 57 moves linearly to the right, spreading the activated carbon particle layer just laid on the activated carbon filter mesh 5, improving the uniformity of the laying of the activated carbon particles. Repeat this process multiple times until the entire activated carbon filter mesh 5 is covered with new activated carbon particles. Embodiment III

[0046] On the basis of Embodiment I, as Figures 12-14 shown, at the middle position of the upper end of the support roller 10 and below the adsorption inner seat 3, a centering positioning shaft 80 is provided. A damping bearing 81 is sleeved outside the positioning shaft 80, and a turntable 82 is sleeved outside the damping bearing 81. The damping bearing 81 provides a certain damping force, allowing the turntable 82 to perform a circular motion together with the support roller 10.

[0047] Among them, curved spring grooves 84 are evenly formed on the upper end surface of the turntable 82. A curved spring 85 is installed in each group of curved spring grooves 84. One end of the curved spring 85 is fixed to the groove wall of the curved spring groove 84, and the other end of the curved spring 85 is connected to the end of the stop post 83. The stop post 83 is welded to the lower end surface of the adsorption inner seat 3 and extends into the curved spring groove 84, as Figure 14 shown Among them, a number of groups of lower layer filtering units 86 are evenly arranged on the outer side surface of the turntable 82 in a circumferential direction. The number of groups of lower layer filtering units 86 and the activated carbon filtering unit 4 are alternately distributed up and down in sequence, as Figure 12 and 13 shown.

[0048] In this embodiment, a push rod motor 90 is installed on the adsorption outer seat 1. A multi-stage push rod 91 extends horizontally outward inside the push rod motor 90. The multi-stage push rod 91 extends into the adsorption outer seat 1. A side baffle 92 is clamped at the end of the multi-stage push rod 91. The side baffle 92 acts on the side of one of the lower layer filtering units 86. A receiving inner groove for the side baffle 92 is formed on the adsorption outer seat 1, as Figure 12 and Figure 13As shown

[0049] When in use in this embodiment, when the double-layer filtration mode is required, the push rod motor 90 is started, and the multi-stage push rod 91 extends, driving the side baffle 92 to move to the side of one group of lower filtration units 86. Then the first servo motor 14 is started, and through a series of transmissions, the support roller 10 drives the adsorption inner seat 3 to rotate a certain angle (at this time, the turntable 82 is blocked and in a stationary state), so that several groups of activated carbon filtration units 4 and several groups of lower filtration units 86 are aligned up and down (the gap between the two is small), having the characteristics of double-layer filtration.

[0050] When the multi-stage push rod 91 drives the side baffle 92 to leave the position of the lower filtration unit 86, several groups of compressed curved springs 85 reset and extend, generating a relative force with the stop post 83 to push the entire turntable 82 to rotate around the positioning shaft 80 (overcoming the damping force) until it returns to its original position.

[0051] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0052] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An activated carbon adsorption device for the waste gas of a twin-screw extruder, comprising an adsorption outer seat (1), characterized in that: An adsorption inner seat (3) is rotatably arranged against the inner wall of the adsorption outer seat (1). A number of groups of activated carbon filtering units (4) are evenly arranged around the edge position of the adsorption inner seat (3). The bottom of the activated carbon filtering unit (4) includes an activated carbon filter net (5), and the activated carbon filter net (5) is covered with activated carbon particles. A support roller (10) is vertically and fixedly arranged at the middle position of the lower end surface of the adsorption inner seat (3). A large gear (12) is sleeved in the middle of the support roller (10), and a small gear (13) is meshed with one side of the large gear (12). A support platform (20) is arranged on the upper end surface of the adsorption outer seat (1). A communicating seat (21) is upwardly communicated inside the adsorption outer seat (1) and the support platform (20). The upper end of the communicating seat (21) is connected with an annular air supply pipe (22). The outer side of the annular air supply pipe (22) is evenly wrapped with a spiral cooling pipe (24). A refrigerant is placed in the spiral cooling pipe (24). A number of groups of vaporization diversion short pipes (25) are evenly connected to the upper end surface of the spiral cooling pipe (24). A planar annular ventilation seat (30) is installed on the upper end surface of the support platform (20). A fan (31) is installed at one end of the planar annular ventilation seat (30), and an exhaust pipe (32) is connected to the other end of the planar annular ventilation seat (30). A flow channel (33) is opened inside the planar annular ventilation seat (30). The number of groups of vaporization diversion short pipes (25) all extend towards the flow channel (33). A refrigerant liquefier (34) connected to the lower end of the vaporization diversion short pipe (25) is fixedly installed in the middle of the flow channel (33).

2. The activated carbon adsorption device for the waste gas of the twin-screw extruder according to claim 1, wherein: A planar large bearing seat (11) is sleeved at the lower end of the support roller (10). The small gear (13) is sleeved on the output shaft of a first servo motor (14), and the first servo motor (14) is vertically fixed. One end of the annular air supply pipe (22) far from the communicating seat (21) is connected with an air inlet pipe (23).

3. An activated carbon adsorption device for the exhaust gas of a twin-screw extruder according to claim 2, characterized in that: Two riveting pieces (41) are used to install a telescopic cylinder (40) on the upper inner surface of the adsorption outer seat (1). A horizontal telescopic rod (42) is movably arranged outward inside the telescopic cylinder (40). A moving frame (43) is fixedly arranged at the end of the horizontal telescopic rod (42). A stamping cylinder (50) is vertically installed inside the moving frame (43). A stamping rod (51) is movably arranged downward inside the stamping cylinder (50). A pressing plate (52) is welded at the lower end of the stamping rod (51), and the pressing plate (52) acts on an oil feeder (53).

4. The activated carbon adsorption device for the exhaust gas of a twin-screw extruder according to claim 3, wherein: The oil feeder (53) includes an arc oil cylinder (531), a hydraulic oil chamber (532), a push rod (533), a rod plug (534), a return spring (535) and a tubing (536). The arc oil cylinder (531) is fixed inside the moving frame (43). A hydraulic oil chamber (532) is formed inside the arc oil cylinder (531). The push rod (533) extends into the hydraulic oil chamber (532). The upper end of the push rod (533) abuts against the pressure plate (52). A rod plug (534) is installed at the lower end of the push rod (533). The rod plug (534) is slidably and sealingly arranged inside the hydraulic oil chamber (532). A return spring (535) sleeved outside the push rod (533) is connected between the rod plug (534) and the cylinder surface of the arc oil cylinder (531). The lower end of the arc oil cylinder (531) is communicated with a tubing (536).

5. The activated carbon adsorption device for the waste gas of a twin-screw extruder according to claim 4, characterized in that: The tubing (536) is inserted downward into the positioning sleeve (54). An expandable oil bladder (55) is installed downward inside the positioning sleeve (54). The expandable oil bladder (55) extends downward through the lower end surface of the moving frame (43). The outer side of the lower end of the expandable oil bladder (55) is wrapped with a corrugated metal sleeve (56). The corrugated metal sleeve (56) extends into the activated carbon filtering unit (4). A scraping part (57) is arranged on the lower end surface of the corrugated metal sleeve (56). The scraping part (57) acts on the activated carbon particles.

6. The activated carbon adsorption device for the waste gas of a twin-screw extruder according to claim 5, wherein: A material receiving hopper (60) is arranged on the upper end surface of the moving frame (43). A distributing wheel (62) is rotatably arranged inside the moving frame (43) and directly below the material receiving hopper (60). The distributing wheel (62) is located on the right side of the oil feeder (53). A driving shaft (63) is installed on the middle part of the distributing wheel (62) by spline. One end of the driving shaft (63) extends outward and is connected to a second servo motor (65) through a coupling. A number of groups of metering grooves (66) are evenly formed on the wheel surface of the distributing wheel (62). An opening (61) for a part of the metering grooves (66) to extend out is formed on the lower end surface of the moving frame (43). A baffle plate (6) is symmetrically installed on both sides of each activated carbon filtering unit (4). The baffle plate (6) allows the bottom of the distributing wheel (62) to extend in.

7. An activated carbon adsorption device for the waste gas of a twin-screw extruder according to claim 6, characterized in that: A material changing box (70) is installed on the outer side surface of the adsorption outer seat (1). A material changing chamber is formed inside the material changing box (70). The material changing chamber is communicated with the adsorption inner seat (3). The moving frame (43) extends into the material changing chamber. A feeding pipe (71) communicated with the material changing chamber is installed on the upper end surface of the material changing box (70). An activated carbon stock hopper (72) is arranged at the upper end of the feeding pipe (71). A waste discharge channel (73) is obliquely installed at the right lower position of the lower end surface of the material changing box (70). The waste discharge channel (73) is communicated with the material changing chamber.

8. An activated carbon adsorption device for the waste gas of a twin-screw extruder according to claim 2, characterized in that: A centering positioning shaft (80) is provided at the middle position of the upper end of the support roller (10) and below the adsorption inner seat (3). A damping bearing (81) is sleeved outside the positioning shaft (80), a turntable (82) is sleeved outside the damping bearing (81), curved spring grooves (84) are evenly formed on the upper end surface of the turntable (82), a curved spring (85) is installed in each curved spring groove (84), one end of the curved spring (85) is fixed to the groove wall of the curved spring groove (84), the other end of the curved spring (85) is connected to the end of a stop column (83), and the stop column (83) is welded to the lower end surface of the adsorption inner seat (3) and extends into the curved spring groove (84).

9. An activated carbon adsorption device for the waste gas of a twin-screw extruder according to claim 8, characterized in that: A plurality of groups of lower layer filtering units (86) are evenly arranged in a circumferential direction on the outer side surface of the turntable (82), and the plurality of groups of lower layer filtering units (86) and the activated carbon filtering unit (4) are alternately distributed up and down in sequence.

10. An activated carbon adsorption device for the waste gas of a twin-screw extruder according to claim 9, characterized in that: A push rod motor (90) is installed on the adsorption outer seat (1). A multi-stage push rod (91) extends horizontally outward inside the push rod motor (90). The multi-stage push rod (91) extends into the adsorption outer seat (1). A side baffle (92) is clamped at the end of the multi-stage push rod (91), and the side baffle (92) acts on the side surface of one of the lower layer filtering units (86).

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