A box-type static pressure box with built-in advection screen plate

Abstract

The present invention discloses a box-type static pressure box with a built-in advection sieve plate, wherein the inner lower wall of the box-type static pressure box is fastened with the advection sieve plate by a hinge, and the side of the advection sieve plate is connected with an angle adjustment rod by a pin shaft, and a handwheel type regulating valve is arranged at the end of the angle adjustment rod, and the handwheel type regulating valve extends to the outside of the box through a hole at the end of the box body. The present invention controls the lateral wind resistance inside the box-type static pressure box by adding an advection sieve plate inside the box-type static pressure box, designing the aperture and hole density of the sieve holes and adjusting the angle change of the advection sieve plate, and alleviates the trapezoidal distribution of the air volume and air pressure inside the box-type static pressure box, improves the wind pressure uniformity of the air outlet of the box-type static pressure box, optimizes the wind field balance, reduces energy consumption, and meets different design and production requirements.

Description

Technical Field

[0001] The invention relates to a box-type static pressure box, which is mainly used in the field of lithium battery diaphragm production. Background Art

[0002] Box-type plenums are generally used in processes such as bidirectional synchronous stretching, transverse stretching and drying of diaphragms, providing a high-temperature environment of 110℃-140℃ for the surface heat treatment of diaphragms. The box-type plenums used in existing industrial production do not have a horizontal flow screen plate structure inside. When the volute fan delivers air from the air inlet of the box-type plenum, the high-pressure air will first fill the far end of the air inlet along the internal flow channel of the box-type plenum, and then gradually fill the near end of the air inlet from far to near. In this way, the internal air volume of the box-type plenum will decrease stepwise from the far end of the air inlet to the near end of the air inlet. When the aperture and hole density of the air outlet holes on the surface of the box-type plenum are evenly distributed, the wind pressure distribution of the air outlet holes on the surface of the box-type plenum will also show a decreasing trend from the far end of the air inlet to the near end of the air inlet, resulting in local wind pressure differences and wind field disorder.

[0003] At present, the excess air volume pressure reduction method is usually used to solve this problem, that is, using an ultra-high power fan that exceeds the design requirements to output excess air volume to the box-type static pressure box, so as to alleviate the air volume difference from far to near inside the box-type static pressure box and improve the distribution uniformity of the air pressure of the air outlet of the box-type static pressure box. However, this excess compensatory design will only slow down this trend and cannot fundamentally solve this problem. It will increase production costs and cause waste of resources. Summary of the invention

[0004] In order to solve the problem of inconsistent wind pressure at air outlet holes of a box-type static pressure box, the present invention proposes a method of adding an adjustable advection screen plate inside the box-type static pressure box, controlling the lateral wind resistance inside the box-type static pressure box by designing the aperture and hole density of the screen holes and adjusting the angle change of the advection screen plate, balancing the internal air volume of the box-type static pressure box, and improving the uniformity of wind pressure distribution at the air outlet holes of the box-type static pressure box.

[0005] The technical problem solved by the present invention can be solved by the following technical solutions:

[0006] A box-type static pressure box with a built-in advection sieve plate comprises a box body, the inner lower wall of the box body is fastened with the advection sieve plate by a hinge, the side of the advection sieve plate is connected with an angle adjustment rod by a pin shaft, the end of the angle adjustment rod is threadedly connected with a handwheel type regulating valve, the valve seat of the handwheel type regulating valve is fastened to the outer side of the box body end face by bolts, the angle adjustment rod and the handwheel extend from the holes on the box body end face to the outside of the box body, so that the inclination angle of the advection sieve plate can be adjusted by the handwheel, so as to achieve the purpose of regulating the internal wind resistance of the box-type static pressure box in real time according to the production process requirements.

[0007] The advection screen plate includes a base plate, screen holes and a pin hole base, all of which are made of stainless steel. The screen hole diameter and hole density are uniform, which can ensure that the wind resistance at each local position inside the box-type static pressure box is the same and the wind speed inside the box-type static pressure box is uniform and gentle.

[0008] The handwheel type regulating valve comprises a valve seat and a handwheel. The handwheel is connected to the angle adjustment rod through a pin shaft, and the valve seat is fastened to the outer side of the box end surface through bolts. By rotating the handwheel, the length of the angle adjustment rod penetrating into the box is controlled, thereby adjusting the inclination angle of the advection screen plate.

[0009] The pin hole base on the side of the advection screen plate is connected with the screw pin hole at the end of the angle adjustment rod through a pin shaft.

[0010] The lower part of the advection screen plate is connected to the hinge through rivets, and the hinge is fastened to the lower wall inside the box through rivets.

[0011] The advection sieve plate and the end faces of the box body are both similar hexagonal shapes. The advection sieve plate can be changed at any angle with the hinge as the axis as the rotation of the hand wheel. When the angle of the advection sieve plate changes, the width of the slit formed by the sieve plate and the box body also changes accordingly, thereby changing the wind resistance and air volume at the advection sieve plate, improving the consistency of the lateral distribution of the air volume inside the box-type static pressure box, and reducing the lateral wind pressure difference of the air outlet of the box-type static pressure box.

[0012] The angle adjustment rod is parallel to the upper surface of the box body and has a diameter of 10-50 mm.

[0013] The mesh shape of the advection screen plate is circular or elliptical, and the mesh diameter is 5-45 mm.

[0014] The beneficial effects of the present invention are as follows:

[0015] The present invention adds an angle-adjustable advection screen plate to the air duct inside the box-type static pressure box, which greatly improves the lateral air volume difference inside the box-type static pressure box and improves the uniformity of the air pressure distribution of the air outlet. At the same time, it saves production costs, reduces energy consumption, and improves the efficiency and quality of product production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the external structure of a static pressure box with a built-in advection sieve plate box.

[0017] Figure 2 It is a schematic diagram of the internal structure of a built-in advection sieve plate box type static pressure box.

[0018] Figure 3 It is a schematic diagram of the assembly of the advection screen plate.

[0019] Figure 4 It is a schematic diagram of the advection sieve plate structure.

[0020] Figure 5It is a schematic diagram of a handwheel type regulating valve.

[0021] Figure 6 It is a schematic diagram of the structure of a horizontal flow sieve plate with connecting channels.

[0022] In the figure, 1. box body, 2. advection sieve plate, 3. angle adjustment rod, 4. handwheel regulating valve, 5. hinge, 201. base plate, 202. sieve hole, 203. pin hole base, 204. connecting channel, 301. end screw pin hole, 401. valve seat, 402. handwheel. DETAILED DESCRIPTION

[0023] like Figure 1~Figure 5 As shown, a box-type static pressure box with a built-in advection sieve plate includes a box body 1, the inner lower wall of the box body 1 is fastened with an advection sieve plate 2 through a hinge 5, the side of the advection sieve plate 2 is connected with an angle adjustment rod 3 through a pin shaft, the end of the angle adjustment rod 3 is threadedly connected with a handwheel type regulating valve 4, the handwheel type regulating valve 4 is composed of a valve seat 401 and a handwheel 402, the valve seat 401 of the handwheel type regulating valve 4 is fastened to the outer side of the end face of the box body 1 by bolts, and the angle adjustment rod 3 and the handwheel 402 extend from the hole on the end face of the box body 1 to the outside of the box body 1. The advection sieve plate 2 includes a base plate 201, a sieve hole 202 and a pin hole base 203, all of which are made of stainless steel. The sieve hole 202 has a uniform aperture and hole density, which can ensure that the wind resistance of each local position inside the box-type static pressure box is the same, and the wind speed inside the box-type static pressure box is uniform and gentle. The pin hole base 203 on the side of the advection sieve plate 2 is connected to the end screw pin hole 301 of the angle adjustment rod 3 by a pin shaft. The lower part of the advection screen plate 2 is connected to the hinge 5 by rivets, and the hinge 5 is fastened to the lower wall inside the box body 1 by rivets. The end faces of the advection screen plate 2 and the box body 1 are both similar hexagonal shapes. Rotate the hand wheel 402, and the advection screen plate 2 can change any angle with the hinge 5 as the axis. The angle adjustment rod 3 is parallel to the upper surface of the box body 1 and has a diameter of 10-50mm. The shape of the sieve hole 202 of the advection screen plate 2 is circular or elliptical, and the diameter of the sieve hole 202 is 5-45mm. The hole density of the sieve hole 202 of the advection screen plate 2 can be reasonably designed according to the wind pressure and wind resistance required in actual production.

[0024] As a preferred structure of the present invention, Figure 6 As shown, a communication channel 204 is provided in the middle part of the advection sieve plate 2, and the width of the communication channel 204 is greater than the diameter of the angle adjustment rod 3, and the length of the communication channel 204 is less than the width of the advection sieve plate 2. By adding the communication channel 204, multiple advection sieve plates 2 can be arranged at different intervals inside the box body 1, and the adjustment angle of the advection sieve plate 2 can be made larger, which is more conducive to improving the consistency of the wind pressure of the air outlet.

[0025] After the volute fan delivers high-pressure air from the air inlet of the box body 1 into the internal flow channel, the high-pressure air first flows along the internal flow channel to the far end of the air inlet, the air volume gradually gathers, and the wind pressure gradually increases. When the gathered air volume reaches a balance with the air volume of the air outlet of the box-type static pressure box, it gathers and enriches from far to near to the near end of the air inlet, forming a transverse trapezoidal distribution from the far end to the near end of the air inlet, with the air volume gradually decreasing and the wind pressure gradually weakening. The structure of the present invention can greatly improve or eliminate this equipment defect. By rotating the handwheel 402 of the handwheel-type regulating valve 4 at the end of the box body 1, the length of the angle adjustment rod 3 penetrating into the box body 1 gradually changes accordingly, and the angle adjustment rod 3 pushes the advection screen plate 2 to form a certain angle θ with the upper surface of the box body 1 through the pin structure at the end, so that the size of the air duct formed between the box body 1 and the advection screen plate 2 and the wind resistance of the advection screen plate 2 are changed accordingly, thereby regulating the lateral wind resistance of the air duct inside the box body 1. The high-pressure wind sent by the fan is blocked by the advection screen plate 2 and gathers near the air inlet of the advection screen plate 2. Part of the high-pressure wind flows along the screen hole 202 of the advection screen plate 2 and the narrow passage between the upper surface of the box body 1 to the far end of the air inlet, and gradually gathers at the far end of the air inlet. In this way, the internal flow channel of the box-type static pressure box can be isolated, which is similar to reducing the horizontal length of the box-type static pressure box, weakening the equipment defect of the trapezoidal distribution of the horizontal air volume inside the box-type static pressure box, and finally improving the uniformity of the wind pressure at the air outlet of the box-type static pressure box. When the isolation effect needs to be strengthened, the handwheel 402 of the handwheel regulating valve 4 needs to be adjusted to further increase the angle θ and strengthen the wind resistance at the advection screen plate 2; on the contrary, if the wind resistance is too large, resulting in excessive air volume near the air inlet, the angle θ should be reduced. The present invention improves the problem of uneven air volume distribution inside the box-type static pressure box by arranging a horizontal flow screen plate 2 with an adjustable inclination angle inside the box-type static pressure box, maintains the balance of the wind field, avoids the compensatory design of the excessive air volume reduction method, reduces energy consumption, and can also meet different design and production requirements.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A box-type static pressure box with a built-in advection screen plate, comprising a box body (1), characterized in that: The lower inner wall of the box body (1) is fastened with a horizontal flow screen plate (2) via a hinge (5); the side of the horizontal flow screen plate (2) is connected with an angle adjustment rod (3) via a pin shaft; the end of the angle adjustment rod (3) is threadedly connected with a handwheel type regulating valve (4); the valve seat (401) of the handwheel type regulating valve (4) is fastened to the outer side of the end face of the box body (1) via bolts; the angle adjustment rod (3) and the handwheel (402) of the regulating valve (4) extend from a hole on the end face of the box body (1) to the outside of the box body (1); the horizontal flow screen plate (2) is composed of a base plate (201), a screen hole (202) and a pin hole base (203); The pin hole base (203) on the side of the advection screen plate (2) is connected to the screw pin hole (301) at the end of the angle adjustment rod (3) via a pin shaft; The lower part of the advection screen plate (2) is connected to the hinge (5) by rivets, and the hinge (5) is fastened to the lower wall inside the box body (1) by rivets; The angle adjustment rod (3) is parallel to the upper surface of the box body (1), and the diameter of the angle adjustment rod (3) is 10-50 mm.

2. A box-type static pressure box with a built-in advection sieve plate according to claim 1, characterized in that: The advection screen plate is made of stainless steel.

3. A box-type static pressure box with a built-in advection sieve plate according to claim 1, characterized in that: The diameter of the sieve hole (202) is 5-45 mm.

4. The box-type static pressure box with built-in advection sieve plate according to claim 1, characterized in that: The end faces of the advection screen plate (2) and the box body (1) are both hexagonal in shape.

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