A static pressure box with adjustable air volume, a drying room and an operating method

Abstract

The present invention provides a static pressure box and a drying room with adjustable air volume. The adjustment device includes two mounting plates, a card frame and a baffle. The card frame and the baffle are arranged between the two mounting plates. The card frame includes a first limiter and a second limiter. The two ends of the first limiter are respectively connected to one end of the two second limiters. When the baffle moves from one end of the first limiter to the other end, the baffle approaches or moves away from the first limiter. The drying room includes a fan, an air duct, a roller and a static pressure box. The static pressure box is connected in parallel to the air duct. The present invention discloses a static pressure box and a drying room with adjustable air volume. Through the operating method disclosed in the present invention, the baffle is adjusted to a suitable position in the card frame, the connection area between the static pressure box and the air duct is changed, the difference in air volume inside each static pressure box is improved, and the uniformity of the wind pressure distribution of the air outlet is improved. At the same time, the excessive air pressure reduction method is avoided, production costs are saved, energy consumption is reduced, and the efficiency and quality of product production are improved.

Description

Technical Field

[0001] The present invention relates to the field of static pressure boxes, and in particular to a static pressure box with adjustable air volume, a drying room and an operating method. Background Art

[0002] The separator is a crucial component of lithium-ion batteries, providing a pathway for lithium ion transmission and preventing short circuits between the positive and negative electrodes. This is crucial to the safety of lithium-ion batteries. During the production process, separators are dried in a drying room, where a static pressure chamber blows air at a constant temperature across the separator.

[0003] However, when the fan is supplying air, the high-pressure air will first fill the static pressure box far away from the air outlet along the air duct, and then gradually enter the static pressure box close to the air outlet from far to near. In this way, the air volume inside the static pressure boxes at different positions will be uneven from the far end to the near end of the air inlet. When the aperture and hole density of the air outlet holes on the surface of the static pressure box are evenly distributed, the wind pressure distribution of the air outlet holes on the surface of different static pressure boxes will also tend to decrease from the far end of the static pressure box to the near end of the air inlet, resulting in differences in wind pressure inside the drying room and a turbulent wind field. Summary of the Invention

[0004] The present invention provides a static pressure box with adjustable air volume, a drying room and an operating method to solve the above problems.

[0005] A static pressure box with adjustable air volume, comprising: a box body and an adjusting device;

[0006] The regulating device includes two mounting plates, a card frame and a baffle, wherein the card frame and the baffle are arranged in the same plane and are parallel to the mounting plates, and the mounting plates have a hollow portion in the middle. The card frame and the baffle are arranged between the two mounting plates, one of the mounting plates is connected to the box body, and the other mounting plate is connected to the air duct;

[0007] The card frame includes a first limiting member and a second limiting member, wherein both ends of the first limiting member are respectively connected to one end of the two second limiting members, and when the baffle moves from one end to the other end of the first limiting member, the baffle approaches or moves away from the first limiting member;

[0008] When the baffle abuts against the first limiting member, the two hollow portions are not connected.

[0009] Furthermore, the hollow portion is provided with a baffle, and the baffle has a hollow groove, and the position of the hollow groove corresponds to the baffle.

[0010] Furthermore, the box body includes a first box body and a second box body, an intermediate orifice plate is provided between the first box body and the second box body, a first through hole is provided on the intermediate orifice plate, and the first box body is connected to the adjustment device;

[0011] It also includes an adjusting orifice plate, which is attached to the middle orifice plate. The adjusting orifice plate has a second through hole, which is connected to the first through hole. The second orifice plate can move along the middle orifice plate so that the second through hole and the first through hole are coaxial.

[0012] Furthermore, the adjusting orifice plate includes an orifice plate portion and a positioning portion, the second through hole is provided in the orifice plate portion, the positioning portion passes through the second box body and is parallel to the orifice plate portion, a positioning plate parallel to the positioning portion is provided on the outside of the second box body, a positioning stud is provided on the positioning plate, a positioning groove is provided on the positioning portion, the positioning stud passes through the positioning groove, and a positioning nut is provided at the end of the positioning stud.

[0013] Furthermore, an air outlet is provided on a side of the second box body away from the first box body.

[0014] A drying room with adjustable air volume comprises a fan, an air duct and a roller, and also comprises a static pressure box with adjustable air volume. There are four static pressure boxes in total, and the four static pressure boxes are connected in parallel to the air duct.

[0015] A method for operating a drying room with adjustable air volume comprises the following steps:

[0016] S1: Turn on the fan and adjust the air volume;

[0017] S2: Adjust the baffle opening,

[0018] When N is 1, 2, or 4, η = 5.82*S-0.03*N-0.11*X,

[0019] When N is 3, η=5.82*S-+0.14*N-0.11*X,

[0020] η is the percentage of the damper opening,

[0021] N is the serial number of the static pressure box. The sorting method is to start from the static pressure box closest to the air supply duct as the first static pressure box.

[0022] S is the cross-sectional area of the static pressure box,

[0023] X is the distance between the static pressure box and the vertical air supply duct,

[0024] S3: Start the roller and start conveying the diaphragm;

[0025] S4: Drying completed.

[0026] The present invention discloses a plenum box and drying room with adjustable air volume. Through the disclosed operating method, the baffle is adjusted to a suitable position within the frame, changing the area of the hollow portion connected, thereby changing the area of communication between the plenum box and the air duct. This improves the difference in air volume within each plenum box and enhances the uniformity of air pressure distribution at the air outlet. Furthermore, the method avoids the use of excessive air pressure reduction, saves production costs, reduces energy consumption, and improves product production efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic structural diagram of a static pressure box with adjustable air volume disclosed in an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of the structure of the regulating device disclosed in an embodiment of the present invention;

[0030] Figure 3 An exploded view of the regulating device disclosed in an embodiment of the present invention;

[0031] Figure 4 Schematic cross-sectional view of a static pressure box with adjustable air volume disclosed in an embodiment of the present invention;

[0032] Figure 5 Schematic diagram of the regulating orifice plate disclosed in an embodiment of the present invention;

[0033] Figure 6 It is an enlarged schematic diagram of the positioning portion disclosed in an embodiment of the present invention;

[0034] Figure 7 The figure is a schematic diagram of the structure of a drying room with adjustable air volume disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] like Figure 1-3As shown, a static pressure box with adjustable air volume includes: a box body 1 and an adjustment device 2;

[0037] The regulating device 2 includes two mounting plates 21, a card frame 22 and a baffle 23. The card frame 22 and the baffle 23 are arranged in the same plane and are parallel to the mounting plate 21. The mounting plate 21 has a hollow portion 211 in the middle. The card frame 22 and the baffle 23 are arranged between the two mounting plates 21. One of the mounting plates 21 is connected to the box body 1 through a flange, and an opening for air supply is provided on the air duct. The other mounting plate is connected to the opening of the air duct and a silicone sealing gasket is provided between the opening of the air duct. The opening of the air duct is connected to the static pressure box through the hollow portions of the two mounting plates.

[0038] The clamping frame 22 includes a first limiting member 221 and a second limiting member 222. The two ends of the first limiting member 221 are respectively connected to one end of the two second limiting members 222. When the baffle 23 moves from one end of the first limiting member 221 to the other end, the baffle 23 approaches or moves away from the first limiting member 221.

[0039] When the baffle 23 abuts against the first limiting member 221 , the two hollow portions 211 are disconnected.

[0040] The first stopper 221 limits the maximum range of movement of the baffle 23. In this embodiment, the first stopper 221 and the second stopper 222 form a door-shaped frame. The width of the door-shaped frame is the same as the width of the baffle 23. The baffle 23 moves along the second stopper 222. The shape of the frame is not limited to a door shape and can also be circular or other shapes.

[0041] The baffle 23 moves between the card frames 22, changing the connection area of the two hollow parts 211, and then changing the connection area between the static pressure box and the air duct, improving the difference in air volume inside each static pressure box, and improving the uniformity of wind pressure distribution at the air outlet.

[0042] To reduce the pressure differences caused by the distance between the plenum and the air inlet, existing technologies employ excess airflow pressure reduction. This involves using a high-power fan that exceeds the design requirements to deliver excess airflow to the plenum. This mitigates the airflow differences between plenums located farther away and closer to the inlet, improving the uniformity of air pressure distribution at the plenum outlets. However, this over-compensation design only mitigates this trend and does not fundamentally resolve the problem. It also increases production costs and wastes resources.

[0043] The static pressure box with adjustable air volume disclosed in the present invention does not need to be equipped with an ultra-high power fan, does not need to output excess air volume, saves production costs, reduces energy consumption, and improves product production efficiency and quality.

[0044] The hollow portion 211 is provided with a blocking bar 212 , and the baffle 23 has a hollow groove 231 . The position of the hollow groove 231 corresponds to the blocking bar 212 .

[0045] like Figure 4-6 As shown, the box body 1 includes a first box body 11 and a second box body 12, an intermediate orifice plate 13 is provided between the first box body 11 and the second box body 12, and a first through hole 131 is provided on the intermediate orifice plate 13, and the first box body 11 is connected to the regulating device 2;

[0046] It also includes an adjusting orifice plate 14, which is attached to the middle orifice plate 13. The adjusting orifice plate 14 has a second through hole 141, which is connected to the first through hole 131. The second orifice plate 14 can move along the middle orifice plate 13 so that the second through hole 141 and the first through hole 131 are coaxial.

[0047] The adjusting orifice plate 14 includes an orifice plate portion 142 and a positioning portion 143. The second through hole 141 is provided in the orifice plate portion 142. The positioning portion 143 passes through the second box body 12 and is parallel to the orifice plate portion 142. A positioning plate 121 parallel to the positioning portion 143 is provided on the outside of the second box body 12. A positioning stud 122 is provided on the positioning plate 121. A positioning groove 144 is provided on the positioning portion 143. The positioning stud 122 passes through the positioning groove 144. A positioning nut 123 is provided at the end of the positioning stud 122.

[0048] In order to ensure the balance of wind pressure in the static pressure box, the air volume blown by the air outlets at different positions of the static pressure box is consistent, and an adjustment orifice plate 14 is provided. The adjustment orifice plate 14 moves along the direction of the positioning groove 144. When the second through hole 141 and the first through hole 131 are coaxial, the air volume entering the second box from the first box is the largest. The farther the distance between the axes of the second through hole 141 and the first through hole 131 is, the smaller the air volume entering the second box from the first box is.

[0049] like Figure 7 As shown, a drying room with adjustable air volume includes a fan, an air duct, a roller and a static pressure box 1. In this embodiment, there are four static pressure boxes 1, and the four static pressure boxes 1 are connected in parallel to the air duct.

[0050] A method for operating a drying room with adjustable air volume comprises the following steps:

[0051] S1: Turn on the fan and adjust the air volume;

[0052] S2: Adjust the baffle opening,

[0053] When N is 1, 2, or 4, η = 5.82*S-0.03*N-0.11*X,

[0054] When N is 3, η=5.82*S-+0.14*N-0.11*X,

[0055] η is the percentage of the damper opening,

[0056] N is the sequence number of the static pressure box. The sorting method is that the static pressure box with the closest static pressure box inlet to the fan outlet is the first static pressure box to be sorted.

[0057] S is the cross-sectional area of the static pressure box,

[0058] X is the distance between the static pressure box and the vertical air supply duct,

[0059] S3: Start the roller and start conveying the diaphragm;

[0060] S4: Drying completed.

[0061] The cross-sectional area of the static pressure box in this embodiment is (0.3*0.3)㎡, the length is 4m, the spacing is 0.3m, and the fan flow rate is 6182m 3 / h, starting from the fan outlet, the opening ratios of the four static pressure boxes are 31%, 90%, 39% and 52% in sequence. At this time, the internal air volume in the four static pressure boxes is uniform.

[0062] The fan sends air into the static pressure box through the air duct. The air first enters the first box body from the air duct, and then enters the second box body through the first through hole and the second through hole. The second box body is provided with an air outlet on the side away from the first box body 11. The air outlet faces the roller. The diaphragm is transmitted between the rollers and is dried by the air from the static pressure box.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for operating a drying room with adjustable air volume, characterized in that: The drying room includes a fan, an air duct and a roller, and also includes a static pressure box with adjustable air volume, and there are four static pressure boxes in total, and the four static pressure boxes are connected in parallel to the air duct; The static pressure box comprises: a box body (1) and a regulating device (2); The regulating device (2) comprises two mounting plates (21), a card frame (22) and a baffle (23); the card frame (22) and the baffle (23) are arranged in the same plane and are parallel to the mounting plates (21); a hollow portion (211) is provided in the middle of the mounting plates (21); the card frame (22) and the baffle (23) are arranged between the two mounting plates (21); one mounting plate (21) is connected to the box (1), and the other mounting plate (21) is connected to the air duct; The card frame (22) comprises a first limiting member (221) and a second limiting member (222), two ends of the first limiting member (221) are respectively connected to one end of two second limiting members (222), and when the baffle (23) moves from one end of the first limiting member (221) to the other end, the baffle (23) approaches or moves away from the first limiting member (221); When the baffle (23) abuts against the first limiting member (221), the two hollow portions (211) are not connected; The box (1) comprises a first box (11) and a second box (12); an intermediate orifice plate (13) is provided between the first box (11) and the second box (12); a first through hole (131) is provided on the intermediate orifice plate (13); and the first box (11) is connected to the regulating device (2); The adjusting orifice plate (14) is also included. The adjusting orifice plate (14) is attached to the middle orifice plate (13). The adjusting orifice plate (14) has a second through hole (141). The second through hole (141) is connected to the first through hole (131). The adjusting orifice plate (14) can move along the middle orifice plate (13) so that the second through hole (141) and the first through hole (131) are coaxial. The regulating orifice plate (14) comprises an orifice plate portion (142) and a positioning portion (143); the second through hole (141) is provided in the orifice plate portion (142); the positioning portion (143) passes through the second box body (12) and is parallel to the orifice plate portion (142); a positioning plate (121) parallel to the positioning portion (143) is provided on the outside of the second box body (12); a positioning stud (122) is provided on the positioning plate (121); a positioning groove (144) is provided on the positioning portion (143); the positioning stud (122) passes through the positioning groove (144); and a positioning nut (123) is provided at the end of the positioning stud (122); The operation method includes the following steps: S1: Turn on the fan and adjust the air volume; S2: Adjust the baffle opening, When N is 1, 2, or 4, η=5.82*S-0.03*N-0.11*X, η is the percentage of the damper opening, N is the serial number of the static pressure box. The sorting method is to start from the static pressure box closest to the air supply duct as the first static pressure box. S is the cross-sectional area of the static pressure box, X is the distance between the static pressure box and the vertical air supply duct, S3: Start the roller and start conveying the diaphragm; S4: Drying completed.

2. The method for operating a drying room with adjustable air volume according to claim 1, characterized in that: The hollow portion (211) is provided with a blocking bar (212), and the baffle (23) has a hollow groove (231), and the position of the hollow groove (231) corresponds to the blocking bar (212).

3. The method for operating a drying room with adjustable air volume according to claim 1, characterized in that: An air outlet (124) is provided on a side of the second box body (12) away from the first box body (11).

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