CN210566448U - Coating valve that clearance switched on - Google Patents
Coating valve that clearance switched on Download PDFInfo
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- CN210566448U CN210566448U CN201920967293.9U CN201920967293U CN210566448U CN 210566448 U CN210566448 U CN 210566448U CN 201920967293 U CN201920967293 U CN 201920967293U CN 210566448 U CN210566448 U CN 210566448U
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Abstract
The utility model relates to the technical field of valves, in particular to coating valve that intermittent type switched on, include: a feeding valve body, and a coating valve body and a reflux valve body which are respectively communicated with the feeding valve body; a coating valve core and a backflow valve core which can be switched are respectively arranged on a channel between the coating valve body and the feeding valve body and a channel between the backflow valve body and the feeding valve body; the coating device comprises a coating assembly, a feeding valve body, a coating valve body and a backflow valve body, wherein the feeding valve body is provided with a feeding hole communicated with a pressure pump, the coating valve body is provided with a feeding hole communicated with the coating assembly, and the backflow valve body is provided with a backflow hole communicated with a coating turnover container. The invention provides a coating valve conducting in a clearance, and the technical scheme provided by the utility model solves the technical problems that the coating quality is unstable in the clearance coating of the existing coating valve and the cylinder is easy to be damaged due to leakage after the abrasion of a sealing element.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to coating valve that clearance switched on.
Background
Under the large environment that the new energy automobile actively replaces the traditional fuel oil automobile by supporting the new energy industry in China and even all over the world, the lithium ion battery becomes the core power element of most new energy automobile manufacturers, and the coating is an essential process in the production process of the lithium ion battery and is also a process directly influencing key performances of the battery, such as safety, capacity and the like.
The coating is a procedure of uniformly coating the sticky lithium battery anode and cathode coating on a copper foil or an aluminum foil. The coating machines commonly used in the market at present are divided into transfer type coating and extrusion type coating, and extrusion type coating gradually becomes the mainstream of high-end markets due to the advantages of relatively simple debugging, coating sealing of solvents which are not easy to volatilize, high coating efficiency, high product quality and the like.
Coating is not necessarily continuous, and intermittent coating can be adopted for partial pole pieces according to different battery specifications, and for an extrusion type coating machine, a coating valve is needed to control the intermittent coating process.
The existing coating valve realizes the gap conduction of the coating valve through the reciprocating motion of a valve rod, the valve rod stretches at the moment of opening and closing the valve body, the volume in a valve cavity changes instantly, the hydraulic pressure is unstable, the tail part of a discontinuous coating head is difficult to control, and the quality of a battery is seriously influenced; the long-time reciprocating motion of the valve rod can cause the abrasion of a sealing element, so that coating paint leaks from the valve body, corrosive leaked liquid flows downwards, and the corrosion of a driving cylinder is easily caused, so that the valve body is damaged.
SUMMERY OF THE UTILITY MODEL
The invention provides a coating valve conducting in a clearance, and the technical scheme provided by the utility model solves the technical problems that the coating quality is unstable and the cylinder is damaged due to material leakage after a sealing element is worn in the clearance coating of the existing coating valve.
In order to solve the technical problem, the utility model provides a coating valve that clearance switches on, include: a feeding valve body, and a coating valve body and a reflux valve body which are respectively communicated with the feeding valve body; a coating valve core and a backflow valve core which can be switched are respectively arranged on a channel between the coating valve body and the feeding valve body and a channel between the backflow valve body and the feeding valve body; the coating device comprises a coating assembly, a feeding valve body, a coating valve body and a backflow valve body, wherein the feeding valve body is provided with a feeding hole communicated with a pressure pump, the coating valve body is provided with a feeding hole communicated with the coating assembly, and the backflow valve body is provided with a backflow hole communicated with a coating turnover container.
Preferably, the coating valve core and the return valve core are opened and closed in a one-way mode towards the coating valve body and the return valve body respectively.
Preferably, the coating valve further comprises a coating valve rod and a return valve rod which are respectively fixed on the coating valve core and the return valve core; the coating valve rod and the backflow valve rod respectively reciprocate through the driving assembly.
Preferably, through holes for the coating valve rod and the backflow valve rod to penetrate are formed in the side walls of the coating valve body and the backflow valve body in a penetrating mode; and a sealing sleeve is fixedly arranged on the side wall of the through hole.
Preferably, the coating valve body, the feeding valve body and the backflow valve body are horizontally arranged after being communicated.
Preferably, the coating valve stem and the return valve stem are both disposed horizontally.
Preferably, a pressure detection assembly is arranged in the feeding valve body and/or the coating valve body and/or the return valve body.
From the above, use the utility model provides a technical scheme can obtain following beneficial effect: by communicating the coating valve core and the reflux valve core arranged on the channel among the three valve bodies, when the coating valve core is closed, the reflux valve core is opened, so that the flow direction of the coating is changed, the problem that the volume in the valve cavity is instantaneously changed at the moment when the coating valve is opened and closed is solved, the hydraulic pressure in the three valve bodies is kept stable, the tail part of the discontinuous coating head is effectively controlled, and the quality of a coated product is improved; and the valve rod and the three valve bodies are horizontally arranged, the driving assembly of the valve rod cannot be corroded due to the downward flow of corrosive leakage liquid, and the problem that the cylinder is damaged by the leakage liquid is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a cross-sectional view of a coating valve according to an embodiment of the present invention;
FIG. 2 is a sectional view showing a coating passage of a coating valve according to an embodiment of the present invention in a conducting state;
fig. 3 is a cross-sectional view of the circulation channel of the coating valve according to the embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
Example 1
The existing coating valve realizes the gap conduction of the coating valve through the reciprocating motion of a valve rod, the valve rod stretches at the moment of opening and closing the valve body, the volume in a valve cavity changes instantly, the hydraulic pressure is unstable, the tail part of a discontinuous coating head is difficult to control, and the quality of a battery is seriously influenced; the long-time reciprocating motion of the valve rod can cause the abrasion of a sealing element, so that coating paint leaks from the valve body, corrosive leaked liquid flows downwards, and the corrosion of a driving cylinder is easily caused, so that the valve body is damaged.
As shown in fig. 1, in order to solve the above problem, the present embodiment provides a gap-conducting coating valve for performing gap coating, which has the effects of stable discharging pressure and less damage to components.
The coating valve provided by the embodiment comprises a feeding valve body 10 and a coating valve body 20 which are communicated with each other as well as the existing valve body, a coating channel 40 of the coating is formed between the feeding valve body 10 and the coating valve body 20, and in the coating process, the coating channel 40 is communicated, so that the coating flows through to finish the coating work.
For this reason, in order to realize the feeding of the above-mentioned coating, in this embodiment, a feed inlet 11 communicated with a pressure pump is formed on the feed valve body 10, and the coating qualified for preparation enters the feed valve body 10 through the feed inlet 11 after passing through the pressure pump. The pressure pump can adopt a precision screw pump commonly used for coating the anode and the cathode of the battery. In order to realize the coating of the coating material, a feed opening 21 communicated with the coating assembly is formed on the coating valve body 20, the feed opening 11 of the feed valve body 10 is communicated with the feed opening 21 to form a coating channel 40, and the coating material flows into the coating assembly after passing through the coating channel 40 and is coated on the pole piece. The coating component can adopt an extrusion die head which is commonly used for coating the anode and the cathode of the battery.
To achieve control of gap coating, a switchable coating spool 22 is provided in the passage between the coating valve body 20 and the feed valve body 10. Referring to fig. 2, when the coating valve core 22 is opened, the coating channel 40 is conducted to complete coating on the pole piece; when coating valve spool 22 is closed, coating passage 40 is non-conductive, forming a gap in the pole piece.
When the coating valve core 22 is closed, the coating material is accumulated in the feeding valve body 10, so that the hydraulic pressure in the feeding valve body 10 is too high, and when the coating is performed in a gap, the hydraulic pressure in the feeding valve body 10 is unstable, which not only easily causes the tail of the coating head to be difficult to control, but also easily damages the coating valve core 22.
For this reason, in this embodiment, a backflow valve body 30 communicated with the feeding valve body 10 is further included, and the feeding valve body 10, the coating valve body 20 and the backflow valve body 30 are communicated with each other to form a whole. The return valve body 30 is provided with a return port 31 communicating with the paint container.
Referring to fig. 3, a paint backflow channel 50 is formed between the feeding valve body 10 and the backflow valve body 30, during the coating gap, the coating channel 40 is not conducted, the paint is accumulated in the feeding valve body 10, at the same time, the backflow channel 50 is conducted, and the paint flows into the paint turnover container through the backflow channel 50, so that the hydraulic pressure in the feeding valve body 10 is reduced.
In cooperation with the applicator cartridge 22, the present embodiment has an openable and closable return cartridge 32 disposed in the passageway between the return valve body 30 and the feed valve body 10. The coating valve core 22 and the return valve core 32 are opened and closed in one direction toward the coating valve body 20 and the return valve body 30, respectively.
To sum up, this embodiment is provided with the valve body of three intercommunication to coating case 22 and the backward flow case 32 that set up on the passageway between the valve body of intercommunication make the flow direction of coating change through opening and close of two cases, solve in the twinkling of an eye that the coating valve opened and close, the hydraulic pressure in the feeding valve body 10 produces the change, and then damages whole coating valve, makes the hydraulic pressure in the three valve body remain stable, makes to be interrupted the coating head afterbody and obtains effective control, improves the coating product quality.
Example 2
The present embodiment provides a gap-conducting coating valve, which also includes a feeding valve body 10, and a coating valve body 20 and a return valve body 30 respectively connected to the feeding valve body and the return valve body.
Switchable coating and return spools 22 and 32 are provided in the passages between the coating and feed valve bodies 20 and 10 and 30 and 10, respectively. The feed valve body 10 is provided with a feed port 11 communicating with a pressure pump, the coating valve body 20 is provided with a feed port 21 communicating with a coating unit, and the return valve body 30 is provided with a return port 31 communicating with a coating material circulation container.
The feed opening 11 of the feed valve body 10 is communicated with the feed opening 21 of the coating valve body 20 to form a coating channel 40, and the feed opening 11 of the feed valve body 10 is communicated with the return opening 31 of the return valve body 30 to form a return channel 50. Opening and closing of the coating spool 22 and the return valve body 30 switches between the coating passage 40 and the return passage 50.
In a preferred embodiment, the switching control between the application passage 40 and the return passage 50 is controlled by the application valve rod 23 and the return valve rod 33 fixed to the application valve core 22 and the return valve core 32, respectively.
The coating valve rod 23 and the return valve rod 33 are reciprocally moved by a driving assembly, which may be a relatively common air cylinder 60, respectively.
In the mounting structure, through holes are formed through the side walls of the coating valve body 20 and the return valve body 30, the coating valve rod 23 passes through the through hole of the coating valve body 20, and the return valve rod 33 passes through the through hole of the return valve body 30. The coating valve rod 23 is driven by the cylinder 60 to reciprocate, and drives the coating valve core 22 to open and close the coating channel 40; the return valve rod 33 is driven by the cylinder 60 to reciprocate, and drives the return valve core 32 to complete the opening and closing of the return passage 50.
In order to achieve hydraulic stability in the three valve bodies, the switching accuracy between the application channel 40 and the return channel 50 must be ensured, and a pressure detection assembly can be arranged in the feed valve body 10 and/or the application valve body 20 and/or the return valve body 30, which can be used to monitor the switching of the two channels. The pressure detection assembly and the air cylinder 60 are respectively in signal connection with the processing unit, the pressure detection assembly detects hydraulic pressure in the three valve bodies in real time and transmits the hydraulic pressure to the processing unit, and the processing unit controls the coating valve core 22 and the return valve core 32 according to the received detection numerical value, so that accurate switching of the coating channel 40 and the return channel 50 is realized.
As a further improvement of the technical scheme, the detection data of the pressure detection assembly can also be used as reference data during the debugging. For this reason, in the present embodiment, the pressure detecting element is provided only in the return valve. In the structure, the switching of the two channels is realized only by controlling the opening and closing of the air cylinder, and the opening and closing time and frequency of the air cylinder are related to the coating specification.
In the coating valve in the current market, the length of a valve rod in a valve body is changed due to the expansion and contraction of the valve rod, so that the internal volume of the valve body is changed, and the hydraulic pressure in the valve body fluctuates. The structure is combined with the backflow channel 50, so that the volume in the valve cavity cannot be changed due to retraction of the valve rod at the moment of opening and closing of the coating valve core 22, instantaneous change of the volume in the valve body is avoided, hydraulic pressure in the three valve bodies is kept stable, the tail of the discontinuous coating head is effectively controlled, and the quality of a coated product is improved.
Example 3
The present embodiment provides a gap-conducting coating valve, which also includes a feeding valve body 10, and a coating valve body 20 and a return valve body 30 respectively connected to the feeding valve body and the return valve body.
Switchable coating and return spools 22 and 32 are provided in the passages between the coating and feed valve bodies 20 and 10 and 30 and 10, respectively. The feed valve body 10 is provided with a feed port 11 communicating with a pressure pump, the coating valve body 20 is provided with a feed port 21 communicating with a coating unit, and the return valve body 30 is provided with a return port 31 communicating with a coating material circulation container.
In the conventional coating valve, the valve rod reciprocates for a long time, which causes abrasion of a sealing member, leakage of coating from the valve body, and corrosive leakage liquid flowing down, which causes corrosion of the driving cylinder 60, thereby causing damage to the valve body.
Therefore, as a further improvement of the technical solution, in the present embodiment, a sealing sleeve 70 is fixedly disposed on the side wall of the through hole of the coating valve body 20 and the side wall of the through hole of the backflow valve body 30, and the coating valve rod 23 and the backflow valve rod 33 are both sleeved on the sealing sleeve 70, so that a sealing space is formed in the coating valve body 20 and the backflow valve body 30.
Further, the coating valve body 20, the feed valve body 10, and the return valve body 30 are disposed horizontally after communicating with each other, and the coating valve rod 23, the return valve rod 33, and the driving cylinders 60 of both are disposed horizontally.
The problem of the easy damage of sealing member has been solved to above-mentioned structure to the installation that the horizontal was put for even the valve body weeping, the drive assembly of valve rod can not be corroded yet to the down flow of corrosive weeping, has solved the weeping and has damaged the problem of cylinder 60.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (7)
1. A gap conducting coating valve, characterized in that: the method comprises the following steps: a feeding valve body, and a coating valve body and a reflux valve body which are respectively communicated with the feeding valve body; a coating valve core and a backflow valve core which can be switched are respectively arranged on a channel between the coating valve body and the feeding valve body and a channel between the backflow valve body and the feeding valve body; the coating device comprises a coating assembly, a feeding valve body, a coating valve body and a backflow valve body, wherein the feeding valve body is provided with a feeding hole communicated with a pressure pump, the coating valve body is provided with a feeding hole communicated with the coating assembly, and the backflow valve body is provided with a backflow hole communicated with a coating turnover container.
2. The coating valve of claim 1, wherein: the coating valve core and the backflow valve core are opened and closed in a one-way mode towards the coating valve body and the backflow valve body respectively.
3. The coating valve of claim 2, wherein: the coating valve core and the backflow valve core are fixed on the coating valve core and the backflow valve core respectively; the coating valve rod and the backflow valve rod respectively reciprocate through the driving assembly.
4. The coating valve of claim 3, wherein: through holes for the coating valve rod and the backflow valve rod to penetrate through are formed in the side walls of the coating valve body and the backflow valve body in a penetrating mode; and a sealing sleeve is fixedly arranged on the side wall of the through hole.
5. The coating valve as recited in claim 4, wherein: the coating valve body, the feeding valve body and the backflow valve body are horizontally arranged after being communicated.
6. The coating valve of claim 3, wherein: the coating valve rod and the return valve rod are both horizontally arranged.
7. The coating valve according to any one of claims 1 to 6, wherein: and a pressure detection assembly is arranged in the feeding valve body and/or the coating valve body and/or the return valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920967293.9U CN210566448U (en) | 2019-06-25 | 2019-06-25 | Coating valve that clearance switched on |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920967293.9U CN210566448U (en) | 2019-06-25 | 2019-06-25 | Coating valve that clearance switched on |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210566448U true CN210566448U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920967293.9U Active CN210566448U (en) | 2019-06-25 | 2019-06-25 | Coating valve that clearance switched on |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210566448U (en) |
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2019
- 2019-06-25 CN CN201920967293.9U patent/CN210566448U/en active Active
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