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CN-121971954-A - Waste gas purification device and method for power battery shell production

CN121971954ACN 121971954 ACN121971954 ACN 121971954ACN-121971954-A

Abstract

The invention relates to the technical field of waste gas purification, in particular to a waste gas purification device and a waste gas purification method for producing a power battery shell, wherein the waste gas purification device comprises a purification cylinder, a bracket, a sealing cover, a filter piece, an adsorption purification unit and a guide unit; the invention can solve the following problems in the process of purifying waste gas in the prior art that pollutants in the waste gas cannot be completely captured and cannot meet environmental protection emission standards when the waste gas with low concentration is treated, pollutants which cannot be subjected to leaching reaction easily exist when the waste gas with complex components is leached, and the purification effect of the waste gas is influenced.

Inventors

  • ZHENG LINA
  • YOU JIANXUN
  • WANG PEIXING
  • FAN ZHONGWEI
  • Ye Anbiao

Assignees

  • 宁波美丁模塑有限公司

Dates

Publication Date
20260505
Application Date
20260311

Claims (10)

  1. 1. The utility model provides an exhaust gas purification device for power battery case production, includes purifying tube (1), purifying tube (1) outer wall symmetry is provided with two support (2), purifying tube (1) upper end articulates has closing cap (3), air inlet (4) have been seted up at closing cap (3) middle part, inside filter (5) and absorption purification unit (6) that are used for purifying waste gas of installing in proper order from top to bottom of purifying tube (1), wherein absorption purification unit (6) are including installing interception tube (61) at purifying tube (1) inner wall, interception tube (61) inner wall is provided with two interception net (62) by last rotation down, and two interception net (62) and interception tube (61) form the mesh bucket of placing the adsorbent that is used for adsorbing the filtration to waste gas, install between two support (2) and be used for carrying the direction unit (7) to the waste gas after the purification to absorption tower and incinerator respectively with the waste gas that the thermal desorption contains the pollutant.
  2. 2. The exhaust gas purifying device for producing a power battery case according to claim 1, wherein the filter element (5) comprises an annular locating frame (51) arranged on the inner wall of the purifying cylinder (1), a supporting ring (52) is detachably arranged at the upper end of the annular locating frame (51), and a filter screen (53) for filtering out particulate impurities in exhaust gas is detachably arranged on the inner wall of the supporting ring (52).
  3. 3. The exhaust gas purifying apparatus for producing a power battery case according to claim 1, wherein the adsorption purifying unit (6) further comprises a thermal desorption mechanism (63) for removing the surface contaminants of the adsorbent at the upper end of the interception net (62).
  4. 4. The exhaust gas purification device for producing the power battery case according to claim 3, wherein the thermal desorption mechanism (63) comprises a stabilizing frame (631) arranged on the inner wall of the purification cylinder (1), a positioning motor (632) is arranged at the upper end of the stabilizing frame (631) through a motor seat, a rotating shaft (633) is arranged at an output shaft at the lower end of the positioning motor (632), and an execution frame (634) for heating an adsorbent in the mesh hopper to desorb pollutants is arranged on the outer wall of the rotating shaft (633).
  5. 5. The exhaust gas purification device for producing the power battery shell according to claim 4, wherein the execution rack (634) comprises a circular disc (635) fixedly sleeved on the outer wall of the rotating shaft (633), a plurality of cross bars (636) distributed in a ring shape are uniformly arranged on the outer wall of the circular disc (635), hollow columns (637) are arranged at the lower ends of the cross bars (636), and rectangular hollow cylinders (638) are arranged after the hollow columns (637) pass through the interception net (62) above in a rotating manner; A plurality of through holes are formed in the hollow column (637) and the rectangular hollow cylinder (638), the diameter of each through hole is smaller than that of the adsorbent, an air pump (639) is arranged at the upper end of any cross rod (636) through a support, a filter cover (640) is arranged at the air inlet end of the air pump (639) and used for filtering exhaust gas sucked by the air pump (639), the exhaust end of the air pump (639) is communicated with the plurality of hollow columns (637), and an electric heating rod (641) is arranged on the inner wall of each hollow column (637) through a bearing frame.
  6. 6. The exhaust gas purifying apparatus for producing a power battery case according to claim 5, wherein an annular bracket (611) is provided at an upper end of the interception cylinder (61), an annular chute (612) is provided at an upper end of the annular bracket (611), and a strut (642) sliding in the annular chute (612) is provided at an end of the cross bar (636) away from the circular plate (635).
  7. 7. The exhaust gas purification device for power battery shell production according to claim 1, wherein the guide unit (7) comprises a connecting cylinder (71) arranged at the bottom of the purifying cylinder (1), a through hole is formed in the connecting cylinder (71), the through hole is communicated with the inside of the connecting cylinder (71), a reciprocating plate (72) which is vertically arranged with the support (2) is arranged in the through hole in a sliding way, two discharging holes (73) are formed in the reciprocating plate (72), a first discharging pipe (74) and a second discharging pipe (75) are respectively arranged at the lower ends of the two discharging holes (73), and a notch for the first discharging pipe (74) and the second discharging pipe (75) to penetrate is formed in the bottom of the connecting cylinder (71).
  8. 8. The exhaust gas purification device for producing the power battery case according to claim 7, wherein two vertical plates (76) are symmetrically arranged at the lower end of the reciprocating plate (72) along the width direction, the opposite sides of the two vertical plates (76) are respectively provided with a linkage block (77), the opposite sides of the two brackets (2) are symmetrically rotatably provided with two rotating rods (78) along the width direction, a belt (79) is sleeved between the two rotating rods (78), and the outer wall of any bracket (2) is provided with a forward and reverse rotating motor (80) through a motor frame; The middle part of bull stick (78) is provided with lead screw (81), and lead screw (81) pass linkage piece (77) through threaded connection's mode, and the fixed cover in both ends of lead screw (81) is equipped with positioning disk (82) for the range of movement of restriction linkage piece (77).
  9. 9. The exhaust gas purifying apparatus for manufacturing a power battery case according to claim 7, wherein an annular rubber pad (731) is mounted at an upper end of the discharge hole (73), and the annular rubber pad (731) is made of a material which is easily elastically deformed, and is used for compensating a gap between an upper end of the reciprocating plate (72) and an inner top wall of the through hole.
  10. 10. A plastic exhaust gas purifying method using an exhaust gas purifying apparatus for producing a power battery case according to any one of claims 1 to 9, characterized in that the purifying method comprises the steps of: S1, exhausting waste gas, namely covering the purifying cylinder (1) by the sealing cover (3), and exhausting the waste gas to be purified into the purifying cylinder (1) through the air inlet (4); s2, filtering the waste gas, namely filtering out particle impurities in the waste gas through a filter element (5), and then carrying out adsorption filtration on the preliminarily filtered waste gas through an adsorption purification unit (6); S3, purifying the adsorbent, namely heating the adsorbent through an adsorption purification unit (6) for desorbing harmful substances and pollutants on the surface of the adsorbent so as to ensure the adsorption filtration effect of the adsorbent; s4, guiding the waste gas after adsorption and filtration and the desorption waste gas into an absorption tower and an incinerator respectively through a guiding unit (7) for carrying out subsequent harmless treatment on the waste gas.

Description

Waste gas purification device and method for power battery shell production Technical Field The invention relates to the technical field of environmental protection, in particular to an exhaust gas purifying device and method for power battery shell production. Background With the rapid development of the new energy automobile industry, the battery pack technology is continuously and iteratively upgraded, so as to meet the core requirements of light weight, corrosion resistance and the like, the automobile power battery shell is widely made of plastic materials, but waste gas is generated in the injection molding process of the power battery shell, and the waste gas contains a large amount of volatile organic compounds, so that not only can the pungent smell be generated, but also the environment is greatly harmed, and the waste gas can be discharged after effective treatment, so that the harm to the environment and the human health is avoided. In the prior art, also disclosed a large amount of exhaust purification and corresponding device, for more accurate contrast, chinese patent like publication No. CN116474493a discloses an exhaust purification equipment for plastic products processing, including the shower box, water tank and collecting box, the bottom of shower box is fixed with a plurality of supports, the lateral wall of water tank and collecting box is fixed with the cooling case jointly, the lateral wall penetration of shower box is equipped with the intake pipe, the top penetration of shower box is equipped with the blast pipe, the inside of shower box is equipped with filtering mechanism, the outer wall of cooling case is fixed with the vortex tube. When the prior art is used, firstly, the waste gas is cooled, secondly, the waste gas is discharged into the leaching tank for leaching, the water flow in the water tank is purified in time and recycled, the impurity air flow generated in the leaching process is impacted by the cold air flow to be condensed and then flows into the collecting tank, and finally, the waste gas is purified. However, in the process of purifying exhaust gas using the above-described prior art, there are the following disadvantages: 1. Although the above-mentioned prior art can carry out the drip washing to waste gas and purify, when handling low concentration waste gas, adopt the pollutant in the waste gas probably can not be caught completely to drip washing the mode, consequently be difficult to effectively get rid of the pollutant in the waste gas, still contain the pollutant in the gas that leads to discharging, can't satisfy environmental protection emission standard, polluted environment. 2. In addition, the leaching mode can only be used for part of waste gas with simple components, and the plastic waste gas has complex components and possibly contains pollutants with various different properties, so that when leaching is carried out on the waste gas with complex components, pollutants which cannot react in leaching are easy to exist, the purifying capacity is limited, the purifying effect on the waste gas is influenced, and the waste gas with complex components cannot be purified. Therefore, under the above stated viewpoints, the exhaust gas purifying means of the prior art has room for improvement. Disclosure of Invention In order to solve the problems, the invention provides an exhaust gas purification device for producing a power battery shell, which comprises a purification cylinder, wherein two supports are symmetrically arranged on the outer wall of the purification cylinder, a sealing cover is hinged at the upper end of the purification cylinder, an air inlet is formed in the middle of the sealing cover, a filtering piece and an adsorption purification unit for purifying exhaust gas are sequentially arranged inside the purification cylinder from top to bottom, the adsorption purification unit comprises an interception cylinder arranged on the inner wall of the purification cylinder, two interception nets are rotatably arranged on the inner wall of the interception cylinder from top to bottom, the two interception nets and the interception cylinder form a mesh bucket for placing an adsorbent for adsorbing and filtering the exhaust gas, a guide unit for guiding the purified exhaust gas is arranged between the two supports, and the guide unit is used for conveying the exhaust gas after adsorbing and purifying the exhaust gas containing pollutants to an absorption tower and an incinerator respectively. As a preferable technical scheme of the invention, the filter element comprises an annular locating frame arranged on the inner wall of the purifying cylinder, the upper end of the annular locating frame is provided with a supporting ring in a detachable mode, and the inner wall of the supporting ring is provided with a filter screen for filtering out particulate impurities in the waste gas in a detachable mode. As a preferable technical scheme of the invention,