Waste gas treatment device

Abstract

The utility model discloses a waste gas treatment device, which relates to the field of waste gas treatment and comprises a first-stage separation assembly for cyclone oil separation of waste gas, a second-stage separation assembly for second-stage oil separation and a third-stage separation assembly for third-stage separation and purification, and communicating pipes are fixedly connected among the first-stage separation assembly, the second-stage separation assembly and the third-stage separation assembly. Through use of the first-stage separation assembly, the second-stage separation assembly and the third-stage separation assembly, a three-stage separation and purification process is realized; according to the first-stage separation assembly, gas containing oil spirally and downwards rotates in a conical hopper and a cyclone barrel through a spiral channel of an air inlet and the cone shape of the conical hopper so that cyclone oil separation can be achieved, and in the second-stage separation purification, oil isolation of a corrugated rubber piece is achieved through a water leakage hole plate, the corrugated rubber piece and a pressing strip. And the third-stage separation and purification adopts activated carbon fiber adsorption to realize oil recovery and waste gas purification, so that the whole workshop becomes clean.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of waste gas treatment, in particular to a waste gas treatment device. BACKGROUND

[0002] In the high-intensity machining process of the grinding workshop, the cutting oil is violently sprayed under the action of high temperature generated by the friction between the high-speed rotating grinding wheel and the workpiece, forming oil mist particles. These oil mists diffuse to the entire workshop space along the turbulent flow generated by the operation of the equipment, resulting in a high concentration of oil mist in the air. The diffused oil mist forms an aerosol pollution in the workshop, which not only causes the wall surface to be attached with a viscous oil film and the ground to be accumulated with a flowable oil layer, causing serious slipping safety hazards, but also causes harmful substances such as polycyclic aromatic hydrocarbons in the oil mist to be suspended for a long time, thereby endangering the health of workers through the respiratory system. However, the current ventilation system can only exhaust the oil mist, and cannot realize oil recovery and waste gas purification, resulting in the problems of deteriorating production environment and resource waste. CONTENT OF THE UTILITY MODEL

[0003] In order to improve the problems of poor production environment and resource waste, the present application provides a waste gas treatment device.

[0004] The waste gas treatment device provided by the present application adopts the following technical scheme:

[0005] A waste gas treatment device comprises a first separation component for cyclone separation of oil from waste gas, a second separation component for secondary separation of oil, and a third separation component for tertiary separation and purification. The first separation component, the second separation component, and the third separation component are fixedly connected with a communication pipe.

[0006] By adopting the above technical scheme, gradient purification is formed through three-stage physical separation, the purification rate of oil mist is improved, and the use of the three-stage separation component can ensure that the airflow uniformly covers the inner surface of the filter barrel containing activated carbon fibers in sequence, thereby improving the adsorption contact area and utilization rate of the activated carbon fibers.

[0007] Preferably, the first separation component comprises a foot stand, a conical hopper is fixedly connected to one side of the surface of the foot stand, a cyclone barrel fixedly communicated with the surface of the communication pipe is fixedly communicated with the top of the conical hopper, and a spiral-shaped air inlet is formed in the surface of the cyclone barrel.

[0008] By adopting the above technical scheme, the spiral air inlet increases the tangential velocity of the airflow, and the oil droplet separation efficiency is high.

[0009] Preferably, the second separation component comprises a fixed tube fixedly communicated with the surface of the communication pipe at both ends, corrugated rubber sheets are fixedly connected to the inner wall of the fixed tube, and a water leakage hole plate and a pressing strip are respectively arranged at both ends of the corrugated rubber sheets and fixed to the inner wall of the fixed tube.

[0010] By adopting the technical scheme, the pressing strip applies uniform pressure, and corrugated sheet fatigue fracture caused by airflow vibration is inhibited.

[0011] Preferably, the tertiary separation assembly comprises a separation shell fixedly communicated with the surface of the communicating pipe at both ends, an auxiliary shell fixedly connected to one side of the surface of the separation shell, a partition plate fixedly connected inside the separation shell, and a filter barrel fixedly connected through the surface of the partition plate and fixedly connected with the inner wall of the separation shell.

[0012] By adopting the technical scheme, the partition plate is used to make the airflow necessarily pass through the inside of the filter barrel.

[0013] Preferably, the inside of the filter barrel is provided with activated carbon fibers, the inner wall of the filter barrel is fixedly connected with a first circular ring cylinder, the inside of the first circular ring cylinder is slidingly connected with a second circular ring cylinder, the inside of the second circular ring cylinder is slidingly connected with a third circular ring cylinder, the inside of the third circular ring cylinder is slidingly connected with a moving plate, and the one side of the surface of the moving plate is slidingly connected with a circumferential array of balls.

[0014] By adopting the technical scheme, the balls are used to reduce the friction of the moving plate in rotation.

[0015] Preferably, the one side of the surface of the moving plate is fixedly connected with a shunt pipe sliding in the inside of the filter barrel, and the one side of the surface of the shunt pipe is fixedly connected with a cylinder penetrating the filter barrel and the separation shell.

[0016] By adopting the technical scheme, the thread groove makes the shunt pipe rotate synchronously and move axially, and the airflow spirally penetrates the activated carbon layer.

[0017] Preferably, the surface of the cylinder is provided with a thread groove penetrating the inside of the cylinder, and the inside of the thread groove is slidingly connected with a fixed column fixedly connected with the surface of the separation shell.

[0018] By adopting the technical scheme, the gap cooperation between the fixed column and the thread groove ensures the accuracy of the motion track and avoids the deviation of the airflow injection.

[0019] Preferably, one end of the cylinder fixedly connected in the auxiliary shell is fixedly connected with an auxiliary plate, and the inner wall of the auxiliary shell is provided with an electric cylinder fixed with the one side of the surface of the auxiliary plate.

[0020] By adopting the technical scheme, the auxiliary plate is used to simultaneously drive multiple cylinders to move.

[0021] In summary, the present application has at least one of the following beneficial technical effects:

[0022] 1. Three-stage separation (recovery) purification process is realized by using a primary separation assembly, a secondary separation assembly and a tertiary separation assembly. The primary separation assembly realizes cyclone separation of oil by making the gas containing oil components rotate spirally downward in the interior of the cone and the cyclone barrel through the spiral channel of the air inlet and the taper of the cone. The secondary separation purification is realized by the water leakage hole plate, the corrugated rubber sheet and the pressing strip to isolate oil by the corrugated rubber sheet. The tertiary separation purification adopts activated carbon fiber adsorption. The three processes are all physical separation and purification treatment. The oil after the first and second stage separation is collected into the oil collecting barrel at the lower part of the primary separation assembly. The set of equipment can be used continuously without power consumption and spare part replacement, realizes oil recovery and waste gas purification, and makes the whole workshop very clean.

[0023] 2. The spiral track is formed by the rotational superposition axial movement of the shunt pipe, which ensures that the airflow entering the filter barrel covers the inner surface of the filter barrel with activated carbon fiber in sequence and uniformly, prevents the airflow from flowing out of the air outlet of the separation shell through the preferential path, improves the contact area and utilization rate of activated carbon fiber adsorption, and the moving air blowing driven by the cylinder can physically strip the particulate matter accumulated on the surface of the activated carbon fiber, such as oil mist condensate. Continuous airflow scouring prevents micropore blockage and maintains porosity. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0025] Figure 2 It is a schematic diagram of the secondary separation assembly of the present application;

[0026] Figure 3 It is a schematic diagram of the internal structure of the tertiary separation assembly of the present application;

[0027] Figure 4 It is a schematic diagram of the internal structure of the filter barrel of the present application;

[0028] Figure 5 It is a sectional view of the filter barrel of the present application;

[0029] Figure 6 It is a schematic diagram of the tertiary separation assembly of the present application.

[0030] Reference signs: 1, primary separation assembly; 11, foot stand; 12, cone; 13, cyclone barrel; 14, air inlet;

[0031] 2, secondary separation assembly; 21, fixed pipe; 22, water leakage hole plate; 23, corrugated rubber sheet; 24, pressing strip;

[0032] 3, three-stage separation assembly; 31, separation shell; 32, auxiliary shell; 33, partition plate; 34, filter barrel; 35, activated carbon fiber; 36, first circular ring cylinder; 37, second circular ring cylinder; 38, third circular ring cylinder; 39, moving plate; 310, ball; 311, shunt pipe; 312, electric cylinder; 313, cylinder; 314, threaded groove; 315, fixed column; 316, auxiliary plate; 4, communication pipe. DETAILED DESCRIPTION

[0033] The application will be further described below in conjunction with the accompanying drawings. Figures 1-6 The application will be further described below in conjunction with the accompanying drawings.

[0034] The application discloses a waste gas treatment device.

[0035] Referring to Figure 1 , Figure 2 A waste gas treatment device comprises a first-stage separation assembly 1 for cyclone separation of oil from waste gas, a second-stage separation assembly 2 for secondary separation of oil, and a third-stage separation assembly 3 for three-stage separation and purification, the first-stage separation assembly 1, the second-stage separation assembly 2, and the third-stage separation assembly 3 are fixedly connected through a communication pipe 4, and the communication pipe 4 is used for transmitting gas to be purified and recovered.

[0036] In use, the workshop interior filled with oil mist is sucked by a negative pressure of an induced draft fan, the gas is subjected to three-stage separation through the first-stage separation assembly 1, the second-stage separation assembly 2, and the third-stage separation assembly 3, and the oil is recovered, so that the whole workshop becomes very clean.

[0037] Referring to Figure 1 , Figure 2 The first-stage separation assembly 1 comprises a foot support 11, the top surface of the foot support 11 is fixedly connected with the top mounting end of a conical hopper 12, the upper surface of the conical hopper 12 is fixedly connected with the bottom mounting end of a cyclone barrel 13, the cyclone barrel 13 is in communication with the conical hopper 12, the conical hopper 12 is conical, the top end surface of the cyclone barrel 13 is provided with an air inlet 14, the air inlet 14 is spiral, and the spiral air inlet channel cooperates with the conical cyclone barrel 13 to generate tangential velocity of the oil-containing gas, so that the oil droplets are separated instantaneously, the second-stage separation assembly 2 comprises a fixed pipe 21 fixedly connected with the surfaces of the communication pipes 4 at both ends, the bottom of the fixed pipe 21 is fixedly connected with the top of the cyclone barrel 13 through the communication pipe 4, the inner wall of the fixed pipe 21 is fixedly connected with the outer surface of a corrugated rubber sheet 23, the upper surface of the corrugated rubber sheet 23 is fixedly connected with a pressing strip 24, the lower surface of the corrugated rubber sheet 23 is fixedly connected with a water leakage hole plate 22, and the outer surfaces of the pressing strip 24 and the water leakage hole plate 22 are fixed to the inner wall of the fixed pipe 21.

[0038] The sucked gas enters the inlet 14 at high speed, and due to the spiral shape of the inlet 14, the gas is forced to rotate along the inner wall of the conical bucket 12 and the cyclone barrel 13, and a strong centrifugal force is generated during the rotation, so that the heavier oil is pushed to the inner wall of the conical bucket 12, and the oil gradually sinks along the rotation of the airflow and is collected, and the purified air flows upward along the central axis of the conical bucket 12 into the inside of the fixed tube 21, the water leakage hole plate 22 intercepts the remaining large particles, and the corrugated rubber sheet 23 captures the oil mist through inertial collision, and the two-stage cooperation improves the oil mist removal rate.

[0039] With reference to Figure 3 , Figure 4 The three-stage separation assembly 3 includes a separation shell 31 fixedly connected to the surface of the communication pipe 4 at both ends, the separation shell 31 is fixedly connected to the fixed tube 21 through the communication pipe 4, the upper surface of the separation shell 31 is fixedly connected to the bottom of the auxiliary shell 32, and the inner wall top and bottom of the separation shell 31 are fixedly connected to both ends of the partition plate 33, so that the partition plate 33 separates the two end outlets of the separation shell 31, and the gas entering the separation shell 31 can only flow out through the filter barrel 34, the upper surface of the partition plate 33 is fixedly connected to the bottom of at least nine filter barrels 34, the top of the filter barrel 34 is fixedly connected to the inner wall top of the separation shell 31, the inside of the filter barrel 34 is filled with activated carbon fiber 35, the activated carbon fiber 35 is used for adsorbing oil mist particles and volatile organic compounds, and the inside and bottom of the filter barrel 34 are fixedly connected to the outside and bottom of the first circular ring cylinder 36.

[0040] The gas passing through the fixed tube 21 enters the inside of the separation shell 31 through the communication pipe 4, and due to the use of the partition plate 33, the gas passing through the inside of the first-stage separation assembly 1 and the second-stage separation assembly 2 can only pass through the inside of the filter barrel 34, and the residual oil mist particles in the gas are adsorbed by the activated carbon fiber 35, achieving the last step of purification.

[0041] With reference to Figure 6, the inner wall of the first circular cylinder 36 slides with the bottom end of the second circular cylinder 37, the middle and top surface of the second circular cylinder 37 slides at the top opening of the first circular cylinder 36, the opening size of the first circular cylinder 36 is smaller than the inner wall size of the first circular cylinder 36, the inner wall of the second circular cylinder 37 slides with the bottom end of the third circular cylinder 38, the middle and top surface of the third circular cylinder 38 slides at the top opening of the second circular cylinder 37, the opening size of the second circular cylinder 37 is smaller than the inner wall size of the second circular cylinder 37, the inner wall of the third circular cylinder 38 slides with the bottom end of the moving plate 39, the middle and top surface of the moving plate 39 slides at the top opening of the third circular cylinder 38, the opening size of the third circular cylinder 38 is smaller than the inner wall size of the third circular cylinder 38, so that the second circular cylinder 37, the third circular cylinder 38 and the moving plate 39 will not be separated from the inside of the first circular cylinder 36, the second circular cylinder 37 and the third circular cylinder 38 during movement, the sizes of the first circular cylinder 36, the second circular cylinder 37, the third circular cylinder 38 and the moving plate 39 are matched with each other to prevent the gap from being too large for gas dispersion, the bottom of the moving plate 39 is slidably connected with the ball 310, the surface of the ball 310 larger than the diameter is located inside the moving plate 39, the balls 310 are arranged in an array around the circumference of the bottom of the moving plate 39, and the bottom of the ball 310 rolls on the inner wall of the bottom of the third circular cylinder 38.

[0042] When the processing device is working, the worker starts the electric cylinder 312 through the controller, the output end of the electric cylinder 312 moves to drive the shunt pipe 311 to move the moving plate 39, and when the bottom end of the moving plate 39 moves to the inside top end of the third circular cylinder 38, the second circular cylinder 37 will slide in the inside of the first circular cylinder 36, and when the second circular cylinder 37 and the third circular cylinder 38 are stretched, the filter hole of the filter barrel 34 is shielded, preventing gas from flowing out from positions other than the shunt pipe 311, wherein the sizes of the first circular cylinder 36, the second circular cylinder 37, the third circular cylinder 38, the moving plate 39 and the shunt pipe 311 are equal to the inner wall height size of the filter barrel 34.

[0043] Referring to Figure 3 , Figure 5The upper surface of the moving plate 39 is fixedly connected with the bottom of the shunt pipe 311, the shunt pipe 311 slides in the inside of the filter bucket 34, the side of the shunt pipe 311 away from the moving plate 39 is fixedly connected with the bottom of the cylinder 313, the top of the cylinder 313 penetrates the filter bucket 34 and the separation shell 31, and the end of the cylinder 313 located outside the separation shell 31 is located in the inside of the auxiliary shell 32, the outer surface of the cylinder 313 is provided with the threaded groove 314 penetrating the inside of the cylinder 313, the inner wall of the separation shell 31 in contact with the cylinder 313 is fixed with the fixed column 315, and the fixed column 315 slides in the inside of the threaded groove 314, so that the fixed column 315 makes the cylinder 313 rotate in the moving process of the cylinder 313, and the end of the cylinder 313 away from the shunt pipe 311 is fixedly connected with the bottom of the auxiliary plate 316, and the top of the inner wall of the auxiliary shell 32 is fixed with the mounting end of the electric cylinder 312, and the output end of the electric cylinder 312 is fixed with the top center of the auxiliary plate 316.

[0044] The output end of the electric cylinder 312 drives the auxiliary plate 316 to move, the auxiliary plate 316 drives the cylinder 313 to move, the cylinder 313 moves and rotates in the moving process by the fixed column 315 sliding in the inside of the threaded groove 314, so that the cylinder 313 drives the shunt pipe 311 to rotate, and the rotation of the shunt pipe 311 in the moving process can ensure that the airflow entering the filter bucket 34 covers the inside surface of the filter bucket 34 provided with the activated carbon fiber 35 in sequence and uniformly, the use of the shunt pipe 311 can make the gas uniformly blow to the activated carbon fiber 35, and the cylinder 313 can uniformly distribute the gas to multiple outlets.

[0045] The electric cylinder 312 and the induced draft fan are prior arts, and the structural principles will not be described in detail, the specific model of the electric cylinder 312 is an HHM805 series electric cylinder, the specific model of the induced draft fan is a 9-26 high-pressure centrifugal fan, the activated carbon fiber 35 is made of a high-temperature-resistant composite material, such as activated carbon fiber 35+silicon carbide fiber, and the temperature resistance is 400 DEG C, and the electric cylinder 312 and the induced draft fan are connected with external power supply wires, in use, the staff first starts the main circuit of the induced draft fan through the controller, adjusts the rotating speed through the frequency converter to establish a negative pressure environment, and simultaneously outputs a signal to trigger the electric cylinder 312 control module.

[0046] The implementation principle of the waste gas treatment device in the embodiment of the application is as follows: in the initial state, the output end of the electric cylinder 312 is stretched, the moving plate 39 is located inside the third circular cylinder 38, the third circular cylinder 38 is located inside the second circular cylinder 37, the second circular cylinder 37 is located inside the first circular cylinder 36, and the shunt pipe 311 is located at the bottom end of the filter barrel 34. When the oil mist concentration in the workshop is relatively high, the worker starts the air blower, the negative pressure of the air blower performs air draft on the workshop interior filled with oil mist, the sucked gas enters the air inlet 14 at high speed, the air inlet 14 cooperates with the conical cyclone barrel 13 to separate most of the oil from the gas through the spiral air inlet channel, the oil gradually sinks along with the rotation of the airflow and is collected, and the purified air enters the inside of the fixed pipe 21. The water leakage hole plate 22 intercepts the remaining large particles, and the corrugated rubber sheet 23 captures the oil mist through inertial impact. The two-stage cooperation removes the oil mist, the gas removed again enters the inside of the separation shell 31 through the communication pipe 4, the residual oil mist particles in the gas are adsorbed by the activated carbon fiber 35, and the last step of purification is realized. The three processes are all separated and purified by physical methods. The set of equipment can be continuously used without power consumption and without replacement of parts, realizes oil recovery and waste gas purification, and makes the entire workshop very clean.

[0047] When the gas enters the separation shell 31 and passes through the filter barrel 34, because the airflow inlet and the internal channel of the separation shell 31 are usually fixed, the gas will naturally select the path with the smallest resistance and will not uniformly cover the inside of the filter barrel 34, reducing the utilization rate of the activated carbon fiber 35. When the treatment device is working, the worker starts the electric cylinder 312 through the controller, the output end of the electric cylinder 312 moves to drive the auxiliary plate 316 to move, the cylinder 313 drives the shunt pipe 311 to slide in the inside of the filter barrel 34, the shunt pipe 311 moves to rotate in the inside of the threaded groove 314 during the moving process, the shunt pipe 311 moves, and the gas can only flow out from the inside of the shunt pipe 311. The uniform movement of the shunt pipe 311 ensures that the airflow entering the filter barrel 34 successively and uniformly covers the inner surface of the filter barrel 34 provided with the activated carbon fiber 35. The output end of the electric cylinder 312 moves to drive the shunt pipe 311 to move, and the bottom end of the moving plate 39 moves to the inside top end of the third circular cylinder 38, which drives the second circular cylinder 37 to slide in the inside of the first circular cylinder 36. When the second circular cylinder 37 and the third circular cylinder 38 are stretched, the filter holes of the filter barrel 34 are blocked, preventing the gas from flowing out from positions other than the shunt pipe 311. The rotation of the shunt pipe 311 superimposes the axial movement to form a spiral track, preventing the airflow from flowing out from the gas outlet of the separation shell 31 through the preferential path, improving the adsorption contact area and utilization rate of the activated carbon fiber 35. In this process, the movement of the cylinder 313 can also physically strip the particles accumulated on the surface of the activated carbon fiber 35, such as oil mist condensate, continuously blows the airflow to prevent the micropores from being blocked and maintain the porosity.

[0048] The above merely describes optional embodiments of the present disclosure, and is not intended to limit the present disclosure. The present disclosure can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. An exhaust gas treatment device, characterized by: Including the first separation component (1) for the waste gas cyclone separation oil and the second separation component (2) for the second separation oil and the third separation component (3) for the third separation purification, the first separation component (1), second separation component (2) and third separation component (3) are fixedly connected with the communication pipe (4) between them; The third separation component (3) includes two ends of the separation shell (31) fixedly connected with the surface of the communication pipe (4), the surface of the separation shell (31) is fixedly connected with the auxiliary shell (32), the inside of the separation shell (31) is fixedly connected with the partition plate (33), the surface of the partition plate (33) is fixedly connected with the filter barrel (34) fixedly connected with the inner wall of the separation shell (31). The inside of the filter barrel (34) is provided with activated carbon fiber (35), the inner wall of the filter barrel (34) is fixedly connected with the first circular ring cylinder (36), the inside of the first circular ring cylinder (36) is slidably connected with the second circular ring cylinder (37), the inside of the second circular ring cylinder (37) is slidably connected with the third circular ring cylinder (38), the inside of the third circular ring cylinder (38) is slidably connected with the moving plate (39), the surface of the moving plate (39) is slidably connected with the circumferentially arrayed rolling ball (310). The surface of the moving plate (39) is fixedly connected with the shunt pipe (311) sliding in the filter barrel (34), the surface of the shunt pipe (311) is fixedly connected with the cylinder (313) penetrating the filter barrel (34) and the separation shell (31).

2. An exhaust treatment device according to claim 1, characterized in that: The first separation component (1) includes a foot stand (11), the surface of the foot stand (11) is fixedly connected with a conical hopper (12), the top of the conical hopper (12) is fixedly connected with a cyclone barrel (13) fixedly connected with the surface of the communication pipe (4), the surface of the cyclone barrel (13) is provided with a spiral air inlet (14).

3. An exhaust treatment device according to claim 1, characterized in that: The second separation component (2) includes a fixed pipe (21) fixedly connected with the surface of the communication pipe (4) at both ends, the inner wall of the fixed pipe (21) is fixedly connected with a corrugated rubber sheet (23), both ends of the corrugated rubber sheet (23) are respectively provided with a water leakage hole plate (22) and a pressing strip (24) fixed with the inner wall of the fixed pipe (21).

4. An exhaust treatment device according to claim 1, characterized in that: The surface of the cylinder (313) is provided with a threaded groove (314) penetrating the inside of the cylinder (313), the inside of the threaded groove (314) is slidably connected with a fixed column (315) fixedly connected with the surface of the separation shell (31).

5. An exhaust treatment device according to claim 1, characterized in that: One end of the cylinder (313) in the auxiliary shell (32) is fixedly connected with an auxiliary plate (316), the inner wall of the auxiliary shell (32) is provided with an electric cylinder (312) fixed with the surface of the auxiliary plate (316).

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