Coating die for water electrolysis diaphragm production modification equipment, equipment and use method

Abstract

The application belongs to the general spraying or atomizing field, and particularly relates to a coating die head for water electrolysis diaphragm production modification equipment, equipment and a use method. T The control module is configured to obtain the distance of each block from the second die head, when T The control module is configured to obtain the distance of each block from the second die head, when T The control module is configured to obtain the distance of each block from the second die head, when T The control module is configured to obtain the distance of each block from the second die head, when T The control module is configured to obtain the distance of each block from the second die head, when T The control module is configured to obtain the distance of each block from the second die head, when T The control module is configured to obtain the distance of each block from the second die head, when T The control module is configured to obtain the distance of each block from the second die head, when T The control module is configured to obtain the distance of each block from the second die head, when

Description

Technical Field

[0001] This invention belongs to the field of general spraying or atomization, and particularly relates to a coating die, equipment and method of use for water electrolysis diaphragm production modification equipment. Background Technology

[0002] Slot coating, as a common coating equipment, is widely used in the coating process of diaphragm modification. Existing slot coating equipment is equipped with a T-block that works with an electric actuator to adjust the cross-sectional area of ​​the slot and control the flow rate in a timely manner to adjust the areal density curve.

[0003] The T-block, as a flow regulating device for slot coating, is used to adjust the width of the slot flow channel in the coating die. As the slurry flows from the central inlet to both sides in the coating die, pressure decreases, resulting in insufficient slurry at the edge of the die. In related technologies, multiple T-blocks are usually arranged in parallel along the length of the coating die lip. By independently adjusting each T-block, the lateral gradient of the slot gap can be adjusted, thereby controlling the local flow velocity distribution of the slurry.

[0004] Because the T-blocks are adjusted locally, in order to avoid dark marks and blistering during coating, the adjustment is carried out according to the gradient principle. That is, a certain T-block has a different height difference with the T-blocks on its left and right sides. Under long-term modified coating, the left and right sides of the T-block will have a significant pressure difference. With the high speed and high temperature of continuous production, the T-block will be subjected to uneven extrusion stress. Over time, this will cause stress deformation of the T-block and reduce its service life.

[0005] Meanwhile, the flow of the slurry also generates liquid pressure on the T-block itself. This means that during slot coating, the T-block has to withstand greater slurry pressure. For T-blocks with longer extension lengths, the corresponding flow channels are narrower, further increasing the slurry pressure. Furthermore, since the T-blocks need to be adjusted in a gradient, the extension lengths of the left and right sides of a given T-block are different. Therefore, the pressure on both sides of the T-block is also different. In this case, the T-block bears an asymmetrical pressure load. If coating work continues for a long time, the T-block will be subjected to irregular pressure for an extended period, causing it to tilt and thus affecting the coating effect.

[0006] Therefore, when adjusting each T-block independently to adjust the lateral gradient of the slit gap, the extension length of the T-blocks on the left and right sides of the T-block is different, resulting in different pressures on both sides of the T-block. The T-block bears an asymmetrical pressure load. If the coating work is carried out for a long time, the T-block will be subjected to irregular pressure for a long time, causing it to tilt and thus affecting the coating effect. Therefore, it is necessary to design a coating die, equipment and usage method for water electrolysis diaphragm production modification equipment.

[0007] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0008] This disclosure provides at least one coating die, equipment, and method of use for a water electrolysis diaphragm production modification device.

[0009] In a first aspect, embodiments of this disclosure provide a coating die head for a water electrolysis diaphragm production modification equipment, comprising:

[0010] A first die head and a second die head disposed on one side of the first die head, with a coating slit formed between the two;

[0011] The first die head is provided with a plurality of adjustment mechanisms electrically connected to the control module along the length direction of the first die head, and the control module is configured to control the adjustment mechanisms to adjust the width of the coating slit;

[0012] The adjustment mechanism includes: a T-block;

[0013] The first mold head has a strip groove on the side near the second mold head along the length of the first mold head. The T-block is slidably disposed in the strip groove, and adjacent T-blocks are in contact.

[0014] The first mold head is provided with a drive component that corresponds to and is connected to the T-block, and the drive component is provided with a support component;

[0015] Both the drive component and the support component are electrically connected to the control module;

[0016] The control module is configured to control the drive assembly to move the T-block closer to or further away from the second die head to adjust the width of the coating slit, and to obtain the distance of each T-block from the second die head. When the distances of two adjacent T-blocks from the second die head are different, the module obtains the gas pressure required to be applied to the T-block and controls the support assembly to support the T-block according to the required gas pressure.

[0017] In one alternative embodiment, the support assembly includes: a retaining sleeve;

[0018] The fixed sleeve passes through the first mold head;

[0019] The movable shaft in the drive assembly passes through the fixed sleeve, and there is a gap between the movable shaft and the inner wall of the fixed sleeve.

[0020] A pair of strip blocks are provided inside the fixed sleeve. The length direction of the strip blocks is parallel to the length direction of the moving shaft, and the strip blocks are in contact with the outer wall of the moving shaft, so as to divide the space between the inner wall of the fixed sleeve and the moving shaft into two support areas along the length direction of the first mold head.

[0021] An arc-shaped block is slidably disposed within the support area and contacts the inner wall of the support area. An air hole corresponding to the support area is opened on the outer wall of the fixed sleeve. The air hole is farther away from the T-block than the arc-shaped block.

[0022] A support plate is connected to one end of the arc-shaped block near the T-block;

[0023] The control module is electrically connected to a gas source, which is connected to the air vent. The control module is configured to control the gas source to introduce gas of a corresponding pressure into the support area according to the required support force, so that the support plate contacts and supports the T-block.

[0024] In one alternative implementation, the T-block is divided into two parts by a centerline perpendicular to the length direction, and the two support plates in the support assembly corresponding to the T-block each correspond to a part of the T-block.

[0025] In one alternative implementation, the step of obtaining the required applied gas pressure, i.e.

[0026] The control module is configured to acquire the distance of each T-block from the second mold head. When two adjacent T-blocks are at different distances from the second mold head, the cross-sectional area of ​​the region enclosed by the T-block, the adjacent T-block closer to the second mold head, and the second mold head is acquired. That is, the cross-sectional area of ​​the region enclosed by the extension of the centerline of each adjacent T-block perpendicular to its length direction and the second mold head is acquired. Then, the required gas pressure applied to the T-block is:

[0027] Where P is the required gas pressure; ρ is the density of the modified coating; v is the current flow velocity of the modified coating; A0 is the outlet area of ​​the modified coating after adjusting the width of the coating slit, i.e., the outlet area of ​​the coating slit; A is the inlet area of ​​the modified coating, i.e., the inlet area of ​​the coating slit; η is the viscosity of the modified coating; L is the flow channel length, i.e., the length of the coating slit; S is the cross-sectional area of ​​the area enclosed by the extension of the centerline of each adjacent T block perpendicular to the length direction and the T block and the second die head after adjusting the width of the coating slit.

[0028] In one optional implementation, the control module is configured to, when two adjacent T-blocks are at different distances from the second mold head, obtain the gas pressure required to be applied to the current T-block, and control the gas source to introduce gas at the required gas pressure to the current T-block into the support area of ​​the adjacent T-block closer to the second mold head, so that the support plate in the support area contacts and supports the T-block.

[0029] In one optional implementation, the drive assembly includes: a servo motor electrically connected to the control module, and a moving shaft connected to the output end of the servo motor;

[0030] The moving axis is connected to the corresponding T-block;

[0031] The control module is configured to control the servo motor to drive the moving axis to move, thereby causing the T-block to move closer to or away from the second mold head.

[0032] In one alternative embodiment, the fixing sleeve is connected to the mounting bracket;

[0033] The mounting bracket has a flow channel corresponding to the fixed sleeve. One end of the flow channel is aligned with the air hole, and the other end is connected to a valve, which is connected to an air source.

[0034] The servo motor is connected to the mounting bracket.

[0035] In one optional embodiment, the second mold head has a first groove and a second groove formed on the side close to the first mold head;

[0036] The second groove is located above the T-block;

[0037] The top of the second die head is provided with a feed hole, which communicates with the first groove;

[0038] The modified coating flows into the first groove from the feed hole, and the modified coating in the first groove flows into the second groove from the gap between the first die head and the second die head. The modified coating in the second groove flows out through the coating slit.

[0039] Secondly, this disclosure also provides a water electrolysis membrane production modification apparatus, comprising:

[0040] The coating die head mentioned above.

[0041] Thirdly, this disclosure also provides a method for using a coating die head in a water electrolysis diaphragm production modification equipment, comprising:

[0042] The control drive component moves the T-blocks closer to or further away from the second die head to adjust the width of the coating slit, and obtains the distance of each T-block from the second die head. When the distances of two adjacent T-blocks from the second die head are different, the required gas pressure to be applied to the T-block is obtained, and the support component is controlled to support the T-block according to the required gas pressure.

[0043] The beneficial effects of this invention are as follows: the coating die head for the water electrolysis diaphragm production modification equipment includes: a first die head and a second die head disposed on one side of the first die head, forming a coating slit between the two; a plurality of adjustment mechanisms electrically connected to a control module are disposed inside the first die head along the length direction of the first die head, the control module being configured to control the adjustment mechanisms to adjust the width of the coating slit; the adjustment mechanism includes: a T-block; a strip groove is formed on the side of the first die head near the second die head along the length direction of the first die head, the T-block is slidably disposed in the strip groove, and adjacent T-blocks are in contact; a drive assembly corresponding to and connected to the T-block is disposed inside the first die head, the drive assembly... The component includes a support assembly; both the drive assembly and the support assembly are electrically connected to the control module; the control module is configured to control the drive assembly to move the T-block closer to or further away from the second die head to adjust the width of the coating slit, and to obtain the distance of each T-block from the second die head. When the distances of two adjacent T-blocks from the second die head are different, the module obtains the required gas pressure to be applied to the T-block and controls the support assembly to support the T-block according to the required gas pressure. This achieves the goal of supporting the T-block when the distances of two adjacent T-blocks from the second die head are different, preventing the T-block from tilting due to different pressures on both sides, and ensuring the coating effect.

[0044] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0045] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0046] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the structure of a coating die head for a water electrolysis diaphragm production modification equipment provided in an embodiment of the present disclosure;

[0048] Figure 2 This is a schematic diagram of the structure of a first mold head provided in an embodiment of the present disclosure;

[0049] Figure 3This is a schematic diagram of the structure of an adjustment mechanism provided in an embodiment of the present disclosure;

[0050] Figure 4 This is a schematic diagram of the structure of a support component provided in an embodiment of the present disclosure;

[0051] Figure 5 This is a schematic diagram of the structure of a mounting bracket provided in an embodiment of the present disclosure;

[0052] Figure 6 This is a schematic diagram of the structure of a second mold head provided in an embodiment of the present disclosure;

[0053] Figure 7 A schematic diagram of the cross-sectional area of ​​an enclosed region provided in an embodiment of this disclosure;

[0054] Figure 8 A schematic diagram of the outlet area of ​​a modified coating after adjusting the width of a coating slit, provided in an embodiment of this disclosure;

[0055] Figure 9 This is a schematic diagram of the inlet area of ​​a modified coating provided in an embodiment of this disclosure.

[0056] In the picture:

[0057] 1 First mold head, 11 Strip groove, 12 Adjustment mechanism, 121 T block, 13 Support assembly, 131 Fixed sleeve, 132 Strip block, 133 Support area, 134 Arc block, 135 Support plate, 136 Air hole, 14 Drive assembly, 141 Servo motor, 142 Moving shaft, 15 Mounting bracket, 151 Flow channel;

[0058] 2 Second mold head, 21 First groove, 22 Second groove, 23 Feed hole. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0061] Slot coating, as a common coating equipment, is widely used in the coating process of diaphragm modification. Existing slot coating equipment is equipped with a T-block that works with an electric actuator to adjust the cross-sectional area of ​​the slot and control the flow rate in a timely manner to adjust the areal density curve.

[0062] Because the T-blocks are adjusted locally, a certain T-block will have a different height difference from the T-blocks on its left and right sides. Under higher viscosity conditions, the left and right sides of the T-block will have significantly different pressure differences. With the high speed and high temperature of continuous production, the T-block will be subjected to uneven extrusion stress. Over time, this will cause the T-block to undergo stress deformation, resulting in a reduction in the service life of the T-block.

[0063] The T-block, as a flow regulating device for slot coating, is used to adjust the width of the slot flow channel in the coating die. As the slurry flows from the central inlet to both sides in the coating die, pressure decreases, resulting in insufficient slurry at the edge of the die. In related technologies, multiple T-blocks are usually arranged in parallel along the length of the coating die lip. By independently adjusting each T-block, the lateral gradient of the slot gap can be adjusted, thereby controlling the local flow velocity distribution of the slurry.

[0064] Meanwhile, the flow of the slurry also generates liquid pressure on the T-block itself. This means that during slot coating, the T-block has to withstand greater slurry pressure. For T-blocks with longer extension lengths, the corresponding flow channels are narrower, further increasing the slurry pressure. Furthermore, since the T-blocks need to be adjusted in a gradient, the extension lengths of the left and right sides of a given T-block are different. Therefore, the pressure on both sides of the T-block is also different. In this case, the T-block bears an asymmetrical pressure load. If coating work continues for a long time, the T-block will be subjected to irregular pressure for an extended period, causing it to tilt and thus affecting the coating effect.

[0065] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0066] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0067] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0068] like Figure 1 , Figure 2 and Figure 3 As shown, at least one disclosed embodiment provides a coating die head for a water electrolysis membrane production modification equipment, comprising: a first die head 1, and a second die head 2 disposed on one side of the first die head 1, forming a coating slit between the two; a plurality of adjustment mechanisms 12 electrically connected to a control module are disposed inside the first die head 1 along the length direction of the first die head 1, the control module being configured to control the adjustment mechanisms 12 to adjust the width of the coating slit; the adjustment mechanism 12 includes: a T-block 121; a strip groove 11 is formed on the side of the first die head 1 near the second die head 2 along the length direction of the first die head 1, the T-block 121 is slidably disposed in the strip groove 11, and adjacent T-blocks 121 are in contact; a drive assembly 14 corresponding to and connected to the T-block 121 is disposed inside the first die head 1, the drive assembly 14 The system includes a support component 13. Both the drive component 14 and the support component 13 are electrically connected to the control module. The control module is configured to control the drive component 14 to move the T-block 121 closer to or further away from the second die head 2 to adjust the width of the coating slit, and to obtain the distance of each T-block 121 from the second die head 2. When the distances between two adjacent T-blocks 121 and the second die head 2 are different, the system obtains the required gas pressure for that T-block 121 and controls the support component 13 to support the T-block 121 according to the required gas pressure. This achieves the goal of supporting the T-block 121 when the distances between two adjacent T-blocks 121 and the second die head 2 are different, preventing the T-block 121 from tilting due to different pressures on both sides, and ensuring the coating effect.

[0069] like Figure 4As shown, in an optional embodiment, the support assembly 13 includes: a fixed sleeve 131; the fixed sleeve 131 passes through the first mold head 1; a moving shaft 142 in the drive assembly 14 passes through the fixed sleeve 131, and there is a gap between the moving shaft 142 and the inner wall of the fixed sleeve 131; a pair of strip blocks 132 are provided inside the fixed sleeve 131, the length direction of the strip blocks 132 is parallel to the length direction of the moving shaft 142, and the strip blocks 132 contact the outer wall of the moving shaft 142, so as to divide the space between the inner wall of the fixed sleeve 131 and the moving shaft 142 into two along the length direction of the first mold head 1. A support area 133; an arc-shaped block 134 is slidably disposed within the support area 133, contacting the inner wall of the support area 133; an air hole 136 corresponding to the support area 133 is opened on the outer wall of the fixing sleeve 131, and the air hole 136 is farther away from the T-block 121 than the arc-shaped block 134; a support plate 135 is connected to one end of the arc-shaped block 134 near the T-block 121; the control module is electrically connected to an air source, the air source is connected to the air hole 136, and the control module is configured to control the air source to introduce gas of corresponding pressure into the support area 133 according to the required support force, so that the support plate 135 contacts and supports the T-block 121.

[0070] In this embodiment, an electromagnetic valve or similar device may be installed in the air hole 136. The electromagnetic valve is electrically connected to the control module. When the support area 133 needs to be supplied with gas of a corresponding pressure, the control module controls the electromagnetic valve to open, thereby opening the corresponding air hole 136. This allows gas to enter the support area 133 and push the arc-shaped block 134 toward the first mold head 1, so that the support plate 135 contacts and supports the first mold head 1.

[0071] In this embodiment, the two support plates 135 correspond to half of the T-block 121 respectively. When the corresponding half of the T-block 121 needs support, it is supported. When the distances of two adjacent T-blocks 121 from the second mold head 2 are different, the pressure exerted by the modified coating on the half of the current T-block 121 that is closer to the second mold head 2 is greater. Therefore, this half of the T-block 121 needs to be supported by the corresponding support plate 135.

[0072] In this embodiment, the control module can control the servo motor 141 to drive the moving shaft 142 to move, thereby driving the corresponding T block 121 to move, adjusting the distance between each T block 121 and the second die head 2 to meet the adjustment of the coating slit.

[0073] In this embodiment, the exit of the coating slit is the gap formed between all T-blocks 121 and the second die head 2.

[0074] In one alternative embodiment, the T-block 121 is divided into two parts by a centerline perpendicular to the length direction, and the two support plates 135 in the support assembly 13 corresponding to the T-block 121 respectively correspond to a part of the T-block 121.

[0075] In one optional implementation, the required gas pressure is obtained by configuring the control module to acquire the distance of each T-block 121 from the second mold head 2. When two adjacent T-blocks 121 are at different distances from the second mold head 2, the cross-sectional area of ​​the region enclosed by the T-block 121, the adjacent T-block 121 closer to the second mold head 2, and the second mold head 2 is acquired. Specifically, the cross-sectional area of ​​the region enclosed by the extension of the centerline of each adjacent T-block 121 perpendicular to its length direction and the second mold head 2 is determined. Therefore, the required gas pressure for the T-block 121 is:

[0076]

[0077] like Figure 8 and Figure 9 As shown, P is the required applied gas pressure, in Pa; ρ is the density of the modified coating, which can be preset in the control module, in kg / m³. 3 v represents the current flow rate of the modified coating, which can be preset in the control module, in m / s; A0 represents the outlet area of ​​the modified coating after adjusting the width of the coating slit, in m². 2 A represents the area of ​​the coating slit exit; A is the area of ​​the modified coating inlet, which can be preset in the control module, in meters. 2 η represents the area of ​​the slit entrance for coating; η is the viscosity of the modified coating, which can be preset in the control module, in N·s / m³. 2 L represents the length of flow channel 151, which can be preset in the control module; it is the length of the coating slit, in meters (m). S represents the cross-sectional area of ​​the region enclosed by the extended centerline of each adjacent T-block 121 perpendicular to the length direction, and the area between T-block 121 and the second die head 2 after the width of the coating slit is adjusted, in meters (m²). 2 .

[0078] In this embodiment, the modified coating outlet area after adjusting the width of the coating slit can be calculated based on the length of each T-block 121 from the second mold head 2 after the adjustment of each T-block 121 is completed.

[0079] As an optional implementation, the outlet area of ​​the modified coating is determined by the slit outlet area of ​​the slit coating head and the encroachment area of ​​the T-block 121. That is, when the T-block 121 is not adjusted, the outlet area of ​​the modified coating is the same as the slit outlet area of ​​the slit coating head. The encroachment area of ​​the T-block 121 can be obtained by measuring the movement distance of the servo motor 141 that adjusts the T-block 121. For example, if the width of a T-block 121 is 0.1m, and its corresponding servo motor 141 controls its extension by 0.001m, then the encroachment area of ​​the T-block 121 is 0.0001m. 2 The total encroachment area can be obtained by acquiring the elongation of the servo motor 141 corresponding to all T blocks 121, and then the outlet area of ​​the modified coating can be obtained.

[0080] As an optional implementation, in the above formula, ρv 2 This reflects the effect of the pressure in flow channel 151 on T-block 121. This reflects the effect of area ratio on block T121, and This reflects the effect of the viscosity dissipation of the modified coating on block T121.

[0081] As an optional real-time method, in a single coating process, when the modified coating uses polyvinylidene fluoride (PVDF, resistant to 30% KOH solution, Tg = 150℃), its density ρ is 1750 kg / m³. 3 At this time, its dynamic viscosity η can generally reach 0.12 N·s / m 2 At this point, the flow velocity of the modified coating is generally set to 1.2 m / s, and the inlet area A of the modified coating is 2.4 × 10⁻⁶ based on the fixed dimensions of the equipment. -4 m 2 The length L of flow channel 151 is 0.15m. After adjustment of block T 121, the outlet area A0 of the modified coating is 4.8 × 10⁻⁶ m. -5 m 2 At this point, if the cross-sectional area S of the region enclosed by the extension of the centerline perpendicular to the length direction of one T-block 121 and the adjacent T-block 121 and the second mold head 2 is 4×10 -8 m 2 At that time, the gas support pressure required for block T121 is:

[0082] That is, 0.541 MPa.

[0083] like Figure 7 As shown, in this embodiment, Figure 7 The shaded area can be the cross-sectional area of ​​the region enclosed by the extension of the center line of each adjacent T-block 121 perpendicular to the length direction after the width of the coating slit is adjusted, and the area between T-block 121 and the second mold head 2. It can be calculated based on the length of T-block 121 from the second mold head 2 after the adjustment of T-block 121 is completed.

[0084] In an optional implementation, the control module is configured to, when two adjacent T-blocks 121 are at different distances from the second mold head 2, obtain the gas pressure required to be applied to the current T-block 121, and control the gas source to introduce gas at the required gas pressure to the current T-block 121 into the support area 133 of the adjacent T-block 121 that is closer to the second mold head 2, so that the support plate 135 in the support area 133 contacts and supports the T-block 121.

[0085] like Figure 3 As shown, in an optional embodiment, the drive assembly 14 includes: a servo motor 141 electrically connected to the control module, and a moving shaft 142 connected to the output end of the servo motor 141; the moving shaft 142 is connected to a corresponding T-block 121; the control module is configured to control the servo motor 141 to drive the moving shaft 142 to move, thereby driving the T-block 121 to move closer to or away from the second mold head 2.

[0086] like Figure 5 As shown, in one optional embodiment, the fixing sleeve 131 is connected to the mounting bracket 15; the mounting bracket 15 has a flow channel 151 corresponding to the fixing sleeve 131, one end of the flow channel 151 is aligned with the air hole 136, and the other end is connected to a valve, and the valve is connected to an air source; the servo motor 141 is connected to the mounting bracket 15.

[0087] like Figure 6 As shown, in one optional embodiment, the second mold head 2 has a first groove 21 and a second groove 22 on the side close to the first mold head 1; the second groove 22 is located above the T block 121; the top of the second mold head 2 has a feed hole 23, which communicates with the first groove 21; the modified coating flows into the first groove 21 from the feed hole 23, the modified coating in the first groove 21 flows into the second groove 22 from the gap between the first mold head 1 and the second mold head 2, and the modified coating in the second groove 22 flows out through the coating slit.

[0088] At least one other disclosed embodiment also provides a water electrolysis diaphragm production modification apparatus, comprising: the coating die head described above.

[0089] At least one other disclosed embodiment also provides a method of using a coating die head for a water electrolysis diaphragm production modification equipment, comprising: controlling the drive assembly 14 to move T-blocks 121 closer to or further away from the second die head 2 to adjust the width of the coating slit, and obtaining the distance of each T-block 121 from the second die head 2; when two adjacent T-blocks 121 are at different distances from the second die head 2, obtaining the required gas pressure to be applied to the T-block 121, and controlling the support assembly 13 to support the T-blocks 121 according to the required gas pressure.

[0090] In summary, the coating die head for the water electrolysis diaphragm production modification equipment includes: a first die head 1 and a second die head 2 disposed on one side of the first die head 1, forming a coating slit between them; a plurality of adjustment mechanisms 12 electrically connected to a control module are disposed inside the first die head 1 along the length direction of the first die head 1, and the control module is configured to control the adjustment mechanisms 12 to adjust the width of the coating slit; the adjustment mechanism 12 includes: a T-block 121; a strip groove 11 is opened on the side of the first die head 1 near the second die head 2 along the length direction of the first die head 1, and the T-block 121 is slidably disposed in the strip groove 11, with adjacent T-blocks 121 in contact; a drive assembly 14 corresponding to and connected to the T-block 121 is disposed inside the first die head 1, and a support is disposed inside the drive assembly 14. Component 13; the driving component 14 and the supporting component 13 are both electrically connected to the control module; the control module is configured to control the driving component 14 to move the T-block 121 closer to or further away from the second die head 2 to adjust the width of the coating slit, and to obtain the distance of each T-block 121 from the second die head 2. When the distances of two adjacent T-blocks 121 from the second die head 2 are different, the required gas pressure to be applied to the T-block 121 is obtained, and the supporting component 13 is controlled to support the T-block 121 according to the required gas pressure. This achieves the goal of supporting the T-block 121 when the distances between the two adjacent T-blocks 121 on the left and right sides of a T-block 121 from the second die head 2 are different, thus preventing the T-block 121 from tilting due to the different pressure on both sides and ensuring the coating effect.

[0091] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0092] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0093] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0094] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0095] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A coating die head for a water electrolysis diaphragm production modification equipment, characterized in that, include: A first die head (1) and a second die head (2) disposed on one side of the first die head (1) form a coating slit between them; The first mold (1) is provided with a plurality of adjustment mechanisms (12) electrically connected to the control module along the length direction of the first mold (1). The control module is configured to control the adjustment mechanisms (12) to adjust the width of the coating slit. The adjustment mechanism (12) includes: a T-block (121); A strip groove (11) is provided on the side of the first mold head (1) near the second mold head (2) along the length direction of the first mold head (1). The T block (121) is slidably disposed in the strip groove (11) and adjacent T blocks (121) are in contact. The first mold head (1) is provided with a drive component (14) that corresponds to and is connected to the T block (121), and the drive component (14) is provided with a support component (13). Both the drive assembly (14) and the support assembly (13) are electrically connected to the control module; The control module is configured to control the drive assembly (14) to move the T-block (121) closer to or further away from the second die head (2) to adjust the width of the coating slit, and to obtain the distance of each T-block (121) from the second die head (2). When the distances of two adjacent T-blocks (121) from the second die head (2) are different, the module obtains the required gas pressure to be applied to the T-block (121) and controls the support assembly (13) to support the T-block (121) according to the required gas pressure. The gas pressure required to obtain the T block (121) is, The control module is configured to obtain the distance of each T-block (121) from the second mold head (2). When the distances of two adjacent T-blocks (121) from the second mold head (2) are different, the cross-sectional area of ​​the region enclosed by the T-block (121) and the adjacent T-block (121) closer to the second mold head (2) and the second mold head (2) is obtained. That is, the cross-sectional area of ​​the region enclosed by the extension line of the centerline of each adjacent T-block (121) perpendicular to the length direction and the T-block (121) and the second mold head (2) is obtained. Then the gas pressure required to be applied to the T-block (121) is: ； in, P The required gas pressure, in units of Pa ; The density of the modified coating is expressed in units of... kg / m 3 ; v The current flow rate of the modified coating, in units of m / s ; A 0 represents the modified coating outlet area after adjusting the width of the coating slit, i.e., the coating slit outlet area, in units of... m 2 ; A The inlet area of ​​the modified coating, i.e., the area of ​​the slit inlet for coating, is expressed in units of... m 2 ; η The viscosity of the modified coating is expressed in units of... N · s / m 2 ; L The length of the coating slit is expressed in units of 1. m ; S After adjusting the width of the coating slit, adjacent T Each of the blocks (121) is perpendicular to the extension of its centerline along its length direction and T The cross-sectional area of ​​the region enclosed between block (121) and the second mold head (2) is expressed in units of m 2 .

2. The coating die head for the water electrolysis diaphragm production modification equipment as described in claim 1, characterized in that: The support assembly (13) includes: a fixed sleeve (131); The fixed sleeve (131) is inserted into the first mold head (1); The moving shaft (142) in the drive assembly (14) passes through the fixed sleeve (131), and there is a gap between the moving shaft (142) and the inner wall of the fixed sleeve (131). A pair of strip blocks (132) are provided inside the fixed sleeve (131). The length direction of the strip blocks (132) is parallel to the length direction of the moving shaft (142), and the strip blocks (132) are in contact with the outer wall of the moving shaft (142) to divide the space between the inner wall of the fixed sleeve (131) and the moving shaft (142) into two support areas (133) along the length direction of the first mold head (1). An arc-shaped block (134) is slidably disposed within the support area (133) and contacts the inner wall of the support area (133). An air hole (136) corresponding to the support area (133) is opened on the outer wall of the fixed sleeve (131). The air hole (136) is farther away from the T block (121) than the arc-shaped block (134). The arc-shaped block (134) is connected to a support plate (135) at one end near the T-block (121); The control module is electrically connected to a gas source, which is connected to the air hole (136). The control module is configured to control the gas source to introduce gas of a corresponding pressure into the support area (133) according to the required support force, so that the support plate (135) contacts and supports the T block (121).

3. The coating die head for the water electrolysis diaphragm production modification equipment as described in claim 2, characterized in that: The T-block (121) is divided into two parts by a centerline perpendicular to the length direction, and the two support plates (135) in the support component (13) corresponding to the T-block (121) are respectively part of the T-block (121).

4. The coating die head for the water electrolysis diaphragm production modification equipment as described in claim 1, characterized in that: The control module is configured to obtain the gas pressure required to be applied to the current T block (121) when the distances between two adjacent T blocks (121) and the second mold head (2) are different, and control the gas source to introduce gas with the required gas pressure to be applied to the current T block (121) into the support area (133) of the adjacent T block (121) that is closer to the second mold head (2), so that the support plate (135) in the support area (133) contacts and supports the T block (121).

5. The coating die head for the water electrolysis diaphragm production modification equipment as described in claim 2, characterized in that: The drive assembly (14) includes: a servo motor (141) electrically connected to the control module, and a moving shaft (142) connected to the output end of the servo motor (141). The moving shaft (142) is connected to the corresponding T-block (121); The control module is configured to control the servo motor (141) to drive the moving shaft (142) to move, thereby causing the T block (121) to move closer to or further away from the second mold head (2).

6. The coating die head for the water electrolysis diaphragm production modification equipment as described in claim 5, characterized in that: The fixed sleeve (131) is connected to the mounting bracket (15); The mounting bracket (15) has a flow channel (151) corresponding to the fixed sleeve (131). One end of the flow channel (151) is aligned with the air hole (136), and the other end is connected to the valve, which is connected to the air source. The servo motor (141) is connected to the mounting bracket (15).

7. The coating die head for the water electrolysis diaphragm production modification equipment as described in claim 1, characterized in that: The second mold head (2) has a first groove (21) and a second groove (22) on the side close to the first mold head (1). The second groove (22) is located above the T-block (121); The top of the second mold head (2) is provided with a feed hole (23), which is connected to the first groove (21); The modified coating flows into the first groove (21) from the feed hole (23). The modified coating in the first groove (21) flows into the second groove (22) from the gap between the first die head (1) and the second die head (2). The modified coating in the second groove (22) flows out through the coating slit.

8. A water electrolysis diaphragm production modification equipment, characterized in that, include: The coating die head as described in claim 1.

9. A method of using a coating die head in a water electrolysis diaphragm production modification equipment as described in claim 1, characterized in that, include: The control drive component (14) moves the T-blocks (121) closer to or further away from the second die head (2) to adjust the width of the coating slits and obtain the distance of each T-block (121) from the second die head (2); When the distance between two adjacent T blocks (121) and the second mold head (2) is different, the required gas pressure of the T block (121) is obtained, and the support assembly (13) is controlled to support the T block (121) according to the required gas pressure.

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