Combined filter and rotary dehumidifier for lithium battery liquid injection process

Abstract

The utility model discloses a combined filter for a lithium battery liquid injection process and a rotary dehumidifier, and belongs to the technical field of air treatment equipment, the combined filter comprises a nylon filter screen and an acid removal filter screen, the air inlet end of the nylon filter screen is tightly attached to the air outlet end of the acid removal filter screen; the characteristics of excellent acid resistance, abundant fiber structures on the surface and the like of the nylon filter screen are fully utilized, so that acidic substances in air can be effectively intercepted under the condition of not causing relatively large air pressure loss; and the nylon filter screen is tightly attached to the deacidification filter screen, so that the intercepted acidic substances can further enter the deacidification filter screen to neutralize the corresponding acidic substances, and the purpose of deacidification of the air is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air treatment equipment, and particularly relates to a rotary dehumidifier used in a lithium battery injection process and a combined filter thereof. Background Art

[0002] Lithium-ion batteries have high requirements for ambient temperature and humidity during liquid filling. To ensure that the workshop environment meets these requirements, a rotary dehumidifier is often introduced to address this issue. However, the lithium-ion battery filling process also produces volatile acidic substances, which can cause the gas to flow back into the dehumidifier for secondary dehumidification. Furthermore, some of the gas, which requires high-temperature drying before the dehumidifier regeneration, is prone to carrying acidic substances. If the acid is not removed properly, the acidic substances will adhere to the surface of the dehumidifier rotor, corroding the dehumidifier rotor and affecting its lifespan and adsorption efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is: how to provide a combined filter and a rotary dehumidifier with the combined filter, so as to achieve the purpose of removing acid from the air while ensuring the dehumidification effect.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A combined filter comprising a nylon filter screen and an acid removal filter screen;

[0006] The air inlet end of the nylon filter screen and the air outlet end of the acid removal filter screen are tightly fitted.

[0007] Furthermore, it also includes a connecting frame;

[0008] The nylon filter screen and the acid removal filter screen are both detachably connected to the connecting frame.

[0009] Furthermore, the mesh size of the nylon filter is 400-600 mesh.

[0010] Furthermore, along the flow direction of the gas, the acid removal filter screen includes an activated carbon layer, an activated aluminum oxide layer and an activated potassium hydroxide layer arranged in sequence.

[0011] Furthermore, a rotary dehumidifier is provided, comprising a fresh air path, a return air path, a regeneration path and two of the above-mentioned combined filters;

[0012] Along the flow direction of the fresh air, a first dehumidification wheel and a first air blower are sequentially provided on the fresh air path;

[0013] One of the combined filters is arranged at the air inlet end of the first dehumidification wheel;

[0014] Another combined filter is arranged between the air inlet end of the first dehumidification wheel and the air outlet end of the first blower;

[0015] An air outlet end of the return air path is arranged at an air inlet end of a combined filter;

[0016] Another air outlet end of the return air path is arranged between the air outlet end of the first dehumidification wheel and the air inlet end of another combined filter;

[0017] Along the flow direction of the regeneration wind, a first regeneration heater and a first regeneration fan are sequentially provided on the regeneration path;

[0018] The first dehumidification wheel regeneration zone is arranged between the air outlet end of the first regeneration heater and the air inlet end of the first regeneration fan.

[0019] Furthermore, a rotary dehumidifier is provided, comprising a fresh air path, a return air path, a regeneration path and two of the above-mentioned combined filters;

[0020] Along the flow direction of the fresh air, the fresh air path is sequentially provided with a second dehumidification rotor, a second blower, a third dehumidification rotor and a third blower;

[0021] Along the flow direction of the regeneration wind, a second regeneration heater, a third regeneration heater and a second regeneration fan are sequentially provided on the regeneration path;

[0022] The third dehumidification wheel regeneration zone is arranged between the air outlet end of the second regeneration heater and the air inlet end of the third regeneration heater;

[0023] The second dehumidification wheel regeneration zone is arranged between the air outlet end of the third regeneration heater and the air inlet end of the regeneration fan;

[0024] One of the combined filters is arranged between the air outlet of the second dehumidification wheel and the air inlet of the second blower;

[0025] Another of the combined filters is arranged at the air inlet end of the second regenerative heater;

[0026] The air outlet end of the return air path is arranged between the air outlet end of the second dehumidification wheel and the air inlet end of a combined filter.

[0027] The beneficial effects of the present invention are as follows: the combined filter provided by the present invention can effectively intercept acidic substances in the air without causing a large wind pressure loss due to the excellent acid resistance of the nylon filter mesh and the fiber structure on its surface; and because the nylon filter mesh is in close contact with the acid removal filter mesh, the intercepted acidic substances can further enter the acid removal filter mesh to neutralize the corresponding acidic substances, thereby achieving the purpose of removing acid from the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Shown is a schematic structural diagram of a combined filter according to a specific embodiment of the present utility model;

[0029] Figure 2 Shown is a structural schematic diagram of a rotary dehumidifier according to a specific embodiment of the present utility model;

[0030] Figure 3 Shown is a structural schematic diagram of another rotary dehumidifier according to a specific embodiment of the present utility model;

[0031] Description of labels:

[0032] 1. Combined filter; 101. Nylon filter; 102. Acid removal filter;

[0033] 2. The first dehumidification wheel;

[0034] 3. The first blower;

[0035] 4. First regeneration heater;

[0036] 5. The first regeneration fan;

[0037] 6. Second dehumidification wheel;

[0038] 7. The third dehumidification wheel;

[0039] 8. Second air blower;

[0040] 9. The third blower;

[0041] 10. Second regeneration heater;

[0042] 11. The third regeneration heater;

[0043] 12. Second regeneration fan. DETAILED DESCRIPTION

[0044] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0045] The most critical concept of the present invention is that the nylon filter has excellent acid resistance and the fiber structure on its surface enables it to effectively intercept acidic substances in the air without causing a large wind pressure loss; and because the nylon filter is in close contact with the acid removal filter, the intercepted acidic substances can further enter the acid removal filter to neutralize the corresponding acidic substances, thereby achieving the purpose of removing acid from the air.

[0046] Please refer to Figures 1 to 3The combined filter 1 provided by the present invention comprises a nylon filter 101 and an acid removal filter 102; the air inlet end of the nylon filter 101 and the air outlet end of the acid removal filter 102 are tightly fitted.

[0047] Specifically, the staff can also replace the acid removal filter 102 with a filter that can remove other chemical substances contained in the air according to actual needs; or the targeted removal of impurities can be achieved by combining filters with different functions. The acid removal filter 102 used in the present invention preferably adopts the Meville AMC chemical filter.

[0048] From the above description, it can be seen that the beneficial effect of the present invention is that: a combined filter 1 is provided. Compared with the existing filter, the existing filter only has a layer of filter made of nylon mesh or multi-layer metal mesh at the air outlet, but this type of filter can only intercept large particles of impurities, and the filtering effect for acid removal is poor or even has no acid removal ability at all; the combined filter 1 of the present invention fully utilizes the excellent acid resistance of the nylon filter 101 and the rich fiber structure on its surface, so that it can effectively intercept acidic substances in the air without causing large wind pressure loss; and because the nylon filter 101 is close to the acid removal filter 102, the intercepted acidic substances can further enter the acid removal filter 102 to neutralize the corresponding acidic substances, thereby achieving the purpose of deacidifying the air.

[0049] Furthermore, the above-mentioned combined filter 1 further includes a connecting frame;

[0050] The nylon filter screen 101 and the acid removal filter screen 102 are both detachably connected to the connecting frame.

[0051] From the above description, it can be seen that the design provides structural support for staff to quickly replace filters. That is, when a filter is damaged or reaches the end of its service life, the corresponding filter can be replaced in a targeted manner without removing all filters, thereby achieving the purpose of saving costs.

[0052] Furthermore, the mesh number of the nylon filter 101 is 400 mesh to 600 mesh. Specifically, the mesh number of the nylon filter 101 can be 400 mesh, 410 mesh, 420 mesh, 430 mesh, 440 mesh, 450 mesh, 460 mesh, 470 mesh, 480 mesh, 490 mesh, 500 mesh, 510 mesh, 520 mesh, 530 mesh, 540 mesh, 550 mesh, 560 mesh, 570 mesh, 580 mesh, 590 mesh or 600 mesh.

[0053] From the above description, it can be seen that the design has made specific improvements to the relevant parameters of the nylon filter 101, thereby ensuring that the nylon filter can not only effectively intercept impurities in the air, but also make the wind resistance of the nylon filter 101 meet actual needs, thereby avoiding the excessive pressure drop of the wind flowing through the combined filter 1 of the present invention, which affects the normal dehumidification work of the equipment.

[0054] Furthermore, along the flow direction of the gas, the acid removal filter 102 includes an activated carbon layer, an activated aluminum oxide layer, and an activated potassium hydroxide layer arranged in sequence.

[0055] Specifically, the mesh size of the activated carbon layer is 30 mesh to 60 mesh.

[0056] From the above description, it can be seen that the design has made specific improvements to the composition structure of the acid removal filter 102. By using chemical mechanisms such as adsorption and chemical reaction, the pollutants in the air react with the adsorbent or catalyst inside the filter, thereby achieving the purpose of deep removal of acidic substances generated during the lithium battery injection process.

[0057] The utility model also provides a rotary dehumidifier, comprising a fresh air path, a return air path, a regeneration path and two combined filters 1 of any one of the above;

[0058] Along the flow direction of the fresh air, the first dehumidification wheel 2 and the first air blower 3 are sequentially arranged on the fresh air path;

[0059] A combined filter 1 is provided at the air inlet end of the first dehumidification wheel 2;

[0060] Another combined filter 1 is arranged between the air inlet end of the first dehumidification wheel 2 and the air outlet end of the first blower 3;

[0061] An air outlet end of the return air path is arranged at an air inlet end of a combined filter 1;

[0062] The other air outlet end of the return air path is arranged between the air outlet end of the first dehumidification wheel 2 and the air inlet end of the other combined filter 1;

[0063] Along the flow direction of the regeneration air, a first regeneration heater 4 and a first regeneration fan 5 are sequentially provided on the regeneration path;

[0064] The regeneration zone of the first dehumidification wheel 2 is arranged between the air outlet end of the first regeneration heater 4 and the air inlet end of the first regeneration fan 5 .

[0065] From the above description, it can be seen that the design provides a specific composition structure of a single-rotor dehumidifier, and makes specific improvements to the distribution position of the combined filter 1. Because the single-rotor dehumidifier has low requirements for the humidity of the regeneration air when regenerating the dehumidification wheel, the external air with higher humidity can be directly used as the regeneration air for the wheel regeneration work. Therefore, it is only necessary to set the corresponding combined filter 1 on the fresh air path to achieve the effect of removing acidic substances in the air.

[0066] The utility model also provides a rotary dehumidifier, comprising a fresh air path, a return air path, a regeneration path and two combined filters 1 of any one of the above;

[0067] Along the flow direction of the fresh air, the fresh air path is sequentially provided with a second dehumidification rotor 6, a second blower 8, a third dehumidification rotor 7 and a third blower 9;

[0068] Along the flow direction of the regeneration wind, a second regeneration heater 10, a third regeneration heater 11 and a second regeneration fan 12 are sequentially provided on the regeneration path;

[0069] The regeneration zone of the third dehumidification wheel 7 is arranged between the air outlet end of the second regeneration heater 10 and the air inlet end of the third regeneration heater 11;

[0070] The regeneration zone of the second dehumidification wheel 6 is arranged between the air outlet end of the third regeneration heater 11 and the air inlet end of the regeneration fan;

[0071] A combined filter 1 is provided between the air outlet of the second dehumidification wheel 6 and the air inlet of the second blower 8;

[0072] Another combined filter 1 is provided at the air inlet end of the second regenerative heater 10;

[0073] The air outlet end of the return air path is arranged between the air outlet end of the second dehumidification wheel 6 and the air inlet end of a combined filter 1 .

[0074] From the above description, it can be seen that the design provides a specific composition structure of a dual-rotor dehumidifier, and makes specific improvements to the distribution position of the combined filter 1. Because the dual-rotor dehumidifier has high requirements on the humidity of the regeneration air when performing the regeneration work of the dehumidification wheel, the high-humidity air from the outside cannot be directly introduced into the regeneration path to perform the regeneration work of the two dehumidification wheels. Usually, the air in the workshop after dehumidification is directly introduced into the regeneration path of the dual-rotor dehumidifier. However, because the air in the workshop contains corresponding acidic substances, the air in the workshop is easily attached to the surface of the dehumidification wheel after being heated at high temperature, thereby corroding the dehumidification wheel; therefore, only by adopting this layout and connection method for the combined filter 1 and the air outlet of the return air path can the effect of removing acidic substances in the air be achieved.

[0075] The combined filter 1 of the present utility model can assist in air purification and is particularly suitable for dehumidification occasions where the air is doped with chemical impurities.

[0076] Please refer to Figure 1 , the first embodiment of the present utility model is:

[0077] A combined filter 1 includes a connecting frame, a nylon filter screen 101, and an acid-removing filter screen 102; the air inlet end of the nylon filter screen 101 and the air outlet end of the acid-removing filter screen 102 are tightly fitted; the nylon filter screen 101 and the acid-removing filter screen 102 are both detachably connected to the connecting frame; the mesh size of the nylon filter screen 101 is 500 mesh; along the flow direction of the gas, the acid-removing filter screen 102 includes an activated carbon layer, an activated aluminum oxide layer, and an activated potassium hydroxide layer arranged in sequence.

[0078] Please refer to Figure 2 , the second embodiment of the present utility model is:

[0079] The utility model also provides a rotary dehumidifier, comprising a fresh air path, a return air path, a regeneration path and two combination filters 1 in embodiment one; along the flow direction of the fresh air, a first dehumidification rotor 2 and a first air supply fan 3 are sequentially provided on the fresh air path; one combination filter 1 is arranged at the air inlet end of the first dehumidification rotor 2; another combination filter 1 is arranged between the air inlet end of the first dehumidification rotor 2 and the air outlet end of the first air supply fan 3; one air outlet end of the return air path is arranged at the air inlet end of one combination filter 1; the other air outlet end of the return air path is arranged between the air outlet end of the first dehumidification rotor 2 and the air inlet end of the other combination filter 1; along the flow direction of the regeneration air, a first regeneration heater 4 and a first regeneration fan 5 are sequentially provided on the regeneration path; the regeneration zone of the first dehumidification rotor 2 is arranged between the air outlet end of the first regeneration heater 4 and the air inlet end of the first regeneration fan 5.

[0080] Please refer to Figure 3 , the third embodiment of the present utility model is:

[0081] The utility model also provides a rotary dehumidifier, comprising a fresh air path, a return air path, a regeneration path and two combination filters 1 in embodiment one; along the flow direction of the fresh air, a second dehumidification rotor 6, a second air supply fan 8, a third dehumidification rotor 7 and a third air supply fan 9 are sequentially provided on the fresh air path; along the flow direction of the regeneration air, a second regeneration heater 10, a third regeneration heater 11 and a second regeneration fan 12 are sequentially provided on the regeneration path; the regeneration zone of the third dehumidification rotor 7 is arranged between the air outlet end of the second regeneration heater 10 and the air inlet end of the third regeneration heater 11; the regeneration zone of the second dehumidification rotor 6 is arranged between the air outlet end of the third regeneration heater 11 and the air inlet end of the regeneration fan; a combination filter 1 is arranged between the air outlet end of the second dehumidification rotor 6 and the air inlet end of the second air supply fan 8; another combination filter 1 is arranged at the air inlet end of the second regeneration heater 10; the air outlet end of the return air path is arranged between the air outlet end of the second dehumidification rotor 6 and the air inlet end of a combination filter 1.

[0082] The working principle of the present invention is as follows: when the gas to be filtered contains acidic substances, after the gas flows through the nylon filter 101, the rich fiber structure on the surface of the nylon filter 101 can effectively intercept the acidic substances in the air, or reduce the flow rate of the acidic substances in the air; then, under the action of the gas, the intercepted acidic substances will further enter the acid removal filter 102 and fully contact with the chemical substances in the acid removal filter 102, thereby achieving the effect of neutralizing the acidic substances and purifying the air.

[0083] To sum up, the utility model provides a combination filter, which is compared with the existing filters. The existing filters only have a layer of filter made of nylon mesh or multi-layer metal mesh at the air outlet, but this type of filter can only intercept large particles of impurities, and the filtering effect for acid removal is poor or even has no acid removal ability at all; the utility model's combination filter fully utilizes the excellent acid resistance of the nylon filter mesh and the rich fiber structure on its surface, so that it can effectively intercept acidic substances in the air without causing a large wind pressure loss; and because the nylon filter mesh is close to the acid removal filter mesh, the intercepted acidic substances can further enter the acid removal filter mesh to neutralize the corresponding acidic substances, thereby achieving the purpose of deacidification of the air; at the same time, specific solutions for combining the combination filter with a single-rotor dehumidifier and a double-rotor dehumidifier are provided, thereby solving the problem that various rotary dehumidifiers are easily corroded by the treated gas in the process of treating special air, thereby damaging internal structural components and ultimately shortening the service life of the equipment.

[0084] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A combined filter for lithium battery injection process, characterized in that: Including nylon filter, acid removal filter connection frame; The air inlet end of the nylon filter and the air outlet end of the acid removal filter are tightly fitted; The nylon filter screen and the acid removal filter screen are both detachably connected to the connecting frame; The mesh size of the nylon filter is 400-600 mesh; Along the flow direction of the gas, the acid removal filter screen comprises an activated carbon layer, an activated aluminum oxide layer and an activated potassium hydroxide layer which are arranged in sequence.

2. A rotary dehumidifier for lithium battery injection process, characterized in that: comprising a fresh air path, a return air path, a regeneration path and two combined filters according to claim 1; Along the flow direction of the fresh air, a first dehumidification wheel and a first air blower are sequentially provided on the fresh air path; One of the combined filters is arranged at the air inlet end of the first dehumidification wheel; Another combined filter is arranged between the air inlet end of the first dehumidification wheel and the air outlet end of the first blower; An air outlet end of the return air path is arranged at an air inlet end of a combined filter; Another air outlet end of the return air path is arranged between the air outlet end of the first dehumidification wheel and the air inlet end of another combined filter; Along the flow direction of the regeneration wind, a first regeneration heater and a first regeneration fan are sequentially provided on the regeneration path; The first dehumidification wheel regeneration zone is arranged between the air outlet end of the first regeneration heater and the air inlet end of the first regeneration fan.

3. A rotary dehumidifier for lithium battery injection process, characterized in that: comprising a fresh air path, a return air path, a regeneration path and two combined filters according to claim 1; Along the flow direction of the fresh air, the fresh air path is sequentially provided with a second dehumidification rotor, a second blower, a third dehumidification rotor and a third blower; Along the flow direction of the regeneration wind, a second regeneration heater, a third regeneration heater and a second regeneration fan are sequentially provided on the regeneration path; The third dehumidification wheel regeneration zone is arranged between the air outlet end of the second regeneration heater and the air inlet end of the third regeneration heater; The second dehumidification wheel regeneration zone is arranged between the air outlet end of the third regeneration heater and the air inlet end of the regeneration fan; One of the combined filters is arranged between the air outlet of the second dehumidification wheel and the air inlet of the second blower; Another of the combined filters is arranged at the air inlet end of the second regenerative heater; The air outlet end of the return air path is arranged between the air outlet end of the second dehumidification wheel and the air inlet end of a combined filter.

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