CN203664140U - Pressure-stabilized feeding system for extrusion type intermittent coating - Google Patents
Pressure-stabilized feeding system for extrusion type intermittent coating Download PDFInfo
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- CN203664140U CN203664140U CN201320876312.XU CN201320876312U CN203664140U CN 203664140 U CN203664140 U CN 203664140U CN 201320876312 U CN201320876312 U CN 201320876312U CN 203664140 U CN203664140 U CN 203664140U
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Abstract
A pressure-stabilized feeding system for extrusion type intermittent coating comprises a slurry storage tank, a feeding pump, a feeding passage, a change-over valve, a coating passage, a backflow passage and a control circuit; the slurry storage tank is used for storing coating slurry; the feeding pump is used for conveying the slurry to the feeding passage; the change-over valve is used for selecting the coating passage and the backflow passage alternately; the control circuit controls the feeding pump and the change-over valve to work concertedly; a coating flow limiting valve and a back flow limiting valve are respectively arranged in the coating passage and the backflow passage; the coating flow limiting valve and the back flow limiting valve ensures that the pressure of the slurry in the feeding passage is constant basically and ensures that the coating rate of the slurry satisfies the process requirements on predetermined coating thickness. The system adopts the scheme that no matter the change-over valve is opened or closed, the volume of the valve chamber remains the same; besides, the coating flow limiting valves and the back flow limiting valves are arranged in the coating passage and the backflow passage respectively, so that the problems of thick head, thin head, thick tail and thin tail of the slurry in the process that an extrusion type coating change-over valve selects the coating passage or the backflow passage alternately can be solved thoroughly at one step through coordination of the change-over valve and the coating flow limiting valve as well as the back flow limiting valve.
Description
Technical field
The utility model relates to a kind of voltage stabilizing feeding system for extrusion type intermittent coating machine, in particular for the voltage stabilizing feeding system of the extrusion type intermittent coating in lithium ion battery production process.
background technology
In the production process of lithium ion battery, the production of the negative or positive electrode of lithium ion battery is all in the one side of substrate or positive electrode is coated in both sides or negative material is made.The existing method and system that positive electrode or negative material is coated on to substrate, in lithium battery industry, generally there are two kinds of method and systems, the one, intermittently rubbing method of two roller transfer types, it is to adopt applicator roll and scraper combination, and slurry positive electrode or negative material are coated on to substrate surface; The 2nd, adopt metering squash type coating process and system, metering squash type coating process and system also claim slit coating process and system, because the latter's coating has many advantages compared with the former coating, therefore, have greatly and replace the trend that the former uses in the industry; Existing extrusion type coating head comprises slurry storage tank, measuring pump, extrusion type coating head, feeding system and control part, in the time that coating machine turns round, described measuring pump is continuous and equably the slurry in slurry storage tank is sent into feeding system, in the time that needs are coated with, the return valve of feeding system cuts out, the inlet valve of feeding system is opened, and slurry is delivered to extrusion type coating head by coating passage and is coated with; At the tempus intercalare of coating, the return valve of feeding system is opened, and the inlet valve of feeding system cuts out, and slurry returns to slurry storage tank by the feed back passage of feeding system; Described control part is used for controlling measuring pump, and the co-ordination of the return valve in inlet valve and feed back passage in coating passage.
For a long time, the problem that the thickness end to end existing in the process of alternately changing at inlet valve and the material returning valve of squash type coating can not be up to standard, is perplexing whole industry.Two kinds of phenomenons of head thickness existence not up to standard, the one, the thick attenuation gradually of starting reaches closes symbol standard-required, and this is referred to as thick in industry; The 2nd, the thin thickening gradually of starting reaches and closes symbol standard-required, and this is referred to as thin in industry.Similarly, afterbody thickness is not up to standard also there are such two kinds of phenomenons, i.e. thick the and thin phenomenon of tail of tail.In the industry, people have proposed many solutions for solving a thick and tailing problem, as Chinese patent literature CN102658255B discloses a kind of batch (-type) extrusion coated method and intermittent extrusion type coating machine, it is to utilize vacuum draw principle, in the time that coating machine starts to be coated with by slurry resorption a little, reduce the coating weight of coating sizing-agent in the time starting, to overcome a thick problem; In the time of coating ending, also adopt slurry resorption a little, stopping slurry further flows out from extrusion type coating head, to overcome the problem of hangover, though this scheme is solving thick and is trailing and played certain effect aspect these two, but, problem correct thin and that tail is thick is helpless, in addition, and the method for this employing vacuum resorption, in actual tests process, very difficult to the control of vacuum resorption, therefore, although there is people early just to propose several years ago this solution, but, also do not have in actual use so extrusion coater to appear on the market.If there is a solution, can solve the problem thick, thin, tail is thick and tail is thin simultaneously, that is that people dream of the solution needing for a long time.
Utility model content
in order to overcome the problems referred to above, the utility model provides a kind of thick, a voltage stabilizing feeding system that extrusion type intermittent thin, that tail is thick and tail is thin is coated with that can substantially simultaneously solve the slurry occurring in the process of alternately changing at inlet valve and the material returning valve of squash type coating to society.
The basic ideas that the utility model is dealt with problems are: want to reach squash type coating evenly and close the predetermined coating thickness standard of symbol, just must accomplish " equivalent is entered and wait to measure ", that is to say at the uniform velocity equivalent charging within any unit interval, also require at the uniform velocity discharging of equivalent within any unit interval simultaneously, just can make slurry coating evenly, and can reach the predetermined coating thickness standard of symbol of closing.
Want to reach the requirement of even coating, this just needs the response time waste that there is no increase and reduce pressure in the feeding pipeline of feeding system, is exactly to require feed line pressure equilibrium conversely speaking; And feeding pipeline is made up of coating passage and feed back passage two parts, centre changes channel selecting by switching valve, this certainly will require to be coated with passage has same fluid pressure with feed back passage, and this pressure is adjustable, preferably can digital display or/and numerical control.
The utility model is respectively designed with the pressure limiting valve for pressure regulation just on coating passage and feed back passage, to guarantee the basic homeostasis of fluid pressure in feeding pipeline, reach thick, thin, tail is thick and tail the is thin problem of eliminating slurry that the inlet valve of squash type coating and material returning valve alternately occur in the process of conversion.
The technical solution of the utility model is: a kind of voltage stabilizing feeding system of extrusion type intermittent coating is provided, comprises slurry storage tank, measuring pump, feeder channel, switching valve, coating passage, return flow line and control circuit, wherein,
Slurry storage tank is used for storing coating sizing-agent;
Measuring pump is for giving feeder channel by the coating sizing-agent of the storage of slurry storage tank by the required corresponding flow pump of technological requirement thickness;
The entrance point of switching valve is connected with the port of export of feeder channel, for alternately selecting to be coated with passage and return flow line;
Coating passage flows to extrusion coated head by slurry within when coating;
Return flow line within the intermittent time by backflow of slurry to slurry storage tank;
Control circuit and measuring pump and switching valve are electrically connected, and control measuring pump and switching valve co-ordination; In described coating passage and return flow line, be respectively equipped with coating pressure limiting valve and reflux pressure limiting valve, keep the basic homeostasis of slurry pressure in feeder channel by coating pressure limiting valve and reflux pressure limiting valve, assurance slurry is coated with stability of flow and meets the technological requirement of predetermined coating thickness.
As to improvement of the present utility model, described coating pressure limiting valve and/or reflux pressure limiting valve are the pressure limiting valves that can carry out by the sectional area of control valve passage the pressure of stable material-supplying passage.
As to improvement of the present utility model, described coating pressure limiting valve and/or reflux pressure limiting valve are choke valve or pressure maintaining valve; Or the combination of choke valve and pressure maintaining valve.
As to improvement of the present utility model, the pressure maintaining valve being arranged on described coating passage is called coating pressure maintaining valve, coating pressure maintaining valve is the output flow that regulates coating pressure maintaining valve according to the outflow pressure of coating pressure maintaining valve, the pressure maintaining valve being arranged on return flow line is called backflow pressure maintaining valve, and described backflow pressure maintaining valve is the output flow that regulates backflow pressure maintaining valve according to the feed pressure of backflow pressure maintaining valve.
As to improvement of the present utility model, on described feeder channel, be provided with the pressure sensor for monitoring the slurry pressure in described feeder channel.
As to improvement of the present utility model, described pressure sensor is digital pressure sensor or pointer pressure sensor.
As to improvement of the present utility model, described switching valve is that its valve pocket volume keeps the switching valve of basic homeostasis in the time that switching valve opens or cuts out.
As to improvement of the present utility model, described switching valve is two single channel stop valves, is located at respectively among described coating passage and return flow line, and described single channel stop valve, in the time opening or close, keeps the volume homeostasis in valve pocket.
As to improvement of the present utility model, described single channel stop valve comprises valve body and spool, and described spool is arranged in the valve pocket of described valve body, and described valve pocket is communicated with the import and the outlet that are located on valve body; One drive rod is through two relative bottom surface and described valve pockets of described valve body, and be fixedly connected with in valve pocket with described spool, outside described valve body, the drive rod of one end is connected with device for driving valve body, and described device for driving valve body drives described spool to coordinate with ring in valve pocket, alternately selects fluid passage.
As to improvement of the present utility model, described spool is plate shaped, cone-shaped or spheric away from the end face encircling in described valve pocket.
As to improvement of the present utility model, described device for driving valve body is electronic, pneumatic or fluid pressure drive device.
As to improvement of the present utility model, described switching valve is a two-way stop valve, described two-way stop valve entrance point is connected with described feeder channel, two ports of export are connected with described coating passage and return flow line respectively, described two-way stop valve, in the time opening or close, keeps the volume homeostasis in valve pocket.
As to improvement of the present utility model, described two-way stop valve is Direct Action Type two-way stop valve, described Direct Action Type two-way stop valve comprises Direct Action Type valve body, the first Direct Action Type spool, the second Direct Action Type spool, described the first Direct Action Type spool, the second Direct Action Type spool are arranged in the Direct Action Type valve pocket of described Direct Action Type valve body, and described Direct Action Type valve pocket is communicated with the import, the first outlet and the second outlet that are located on described Direct Action Type valve body; One Direct Action Type drive rod is through two relative bottom surface and described Direct Action Type valve pockets of described Direct Action Type valve body, and be fixedly connected with in described Direct Action Type valve pocket with described the first Direct Action Type spool, the second Direct Action Type spool, outside described Direct Action Type valve body, the Direct Action Type drive rod of one end is connected with Direct Action Type device for driving valve body, described Direct Action Type device for driving valve body drives described the first Direct Action Type spool, the second Direct Action Type spool to coordinate with the interior ring of valve pocket first and the interior ring of valve pocket second respectively, alternately selects fluid passage.
As to improvement of the present utility model, described the first Direct Action Type spool is plate shaped, cone-shaped or spheric away from the end face of described valve pocket the first interior ring.
As to improvement of the present utility model, described the second Direct Action Type spool is plate shaped, cone-shaped or spheric away from the end face of described valve pocket the second interior ring.
As to improvement of the present utility model, described two-way stop valve is swing type two-way stop valve, described swing type two-way stop valve comprises swing type valve body, the first swing type spool, the second swing type spool, described the first swing type spool, the second swing type spool are arranged in the swing type valve pocket of described swing type valve body, and described swing type valve pocket is communicated with the import, the first outlet and the second outlet that are located on described swing type valve body, the first rotary drive bar is arranged in described swing type valve pocket, and with described the first swing type spool, the second swing type spool is fixedly connected with in described swing type valve pocket, also be provided with the second rotary drive bar at described swing type valve pocket, one end of described the second rotary drive bar is flexibly connected with the mid point of described the first rotary drive bar, one end of described the second rotary drive bar is connected with the 3rd rotary drive bar perpendicular to described the second rotary drive bar, outside described swing type valve body, the 3rd rotary drive bar of one end is connected with swing type device for driving valve body, described swing type device for driving valve body drives described the first swing type spool, the second swing type spool coordinates with the interior ring of swing type valve pocket first and the interior ring of swing type valve pocket second respectively, alternately select fluid passage.
As to improvement of the present utility model, described the first swing type spool is plate shaped, cone-shaped or spheric away from the end face of described swing type valve pocket the first interior ring.
As to improvement of the present utility model, described the second swing type spool is plate shaped, cone-shaped or spheric away from the end face of described swing type valve pocket the second interior ring.
As to improvement of the present utility model, described two-way stop valve is eccentric wheel two-way stop valve, described eccentric wheel two-way stop valve comprises eccentric wheel valve body, the first eccentric wheel spool, the second eccentric wheel spool, described the first eccentric wheel spool, the second eccentric wheel spool are arranged in the eccentric wheel valve pocket of described eccentric wheel valve body, and described eccentric wheel valve pocket is communicated with the import, the first outlet and the second outlet that are located on described eccentric wheel valve body; One eccentric wheel arranges between described the first eccentric wheel spool and the second eccentric wheel spool, one eccentric wheel drive rod is connected with described eccentric wheel, the eccentric wheel drive rod other end stretches out in outside described eccentric wheel valve body, and be connected with eccentric wheel device for driving valve body, described eccentric wheel device for driving valve body drives described the first eccentric wheel spool, the second eccentric wheel spool to coordinate with the interior ring of eccentric wheel valve pocket first and the interior ring of eccentric wheel valve pocket second respectively, alternately selects fluid passage.
As to improvement of the present utility model, described the first eccentric wheel spool is plate shaped, cone-shaped or spheric away from the end face of described eccentric wheel valve pocket the first interior ring.
As to improvement of the present utility model, described the second eccentric wheel spool is plate shaped, cone-shaped or spheric away from the end face of described eccentric wheel valve pocket the second interior ring.
The utility model is owing to having taked many technical measures, one of them is the unlatching of switching valve or closes, its valve pocket constancy of volume, that is to say the motion of spool and drive rod, do not change valve pocket volume, thereby can not impact pressure to slurry because of the switch of switching valve, and be respectively equipped with coating pressure limiting valve and reflux pressure limiting valve in coating passage and return flow line, like this, just can be by switching valve and the mating reaction that is coated with pressure limiting valve and reflux pressure limiting valve, keep the basic homeostasis of slurry pressure in feeder channel, and guarantee that slurry coating flow meets the technological requirement of predetermined coating thickness, reach disposable the thick of the slurry that occurs in the process of squash type coating switching valve alternate selection coating passage or return flow line that solved up hill and dale, thin, thick and the thin problem of tail of tail.
Accompanying drawing explanation
Fig. 1 is the planar structure schematic diagram of a kind of embodiment of the utility model.
Fig. 2 is the planar structure schematic diagram of the another kind of embodiment of the utility model.
Fig. 3 is the planar structure schematic diagram of the third embodiment.
Fig. 4 is the planar structure schematic diagram of the 4th kind of embodiment.
Fig. 5 is the planar structure schematic diagram of the 5th kind of embodiment.
Fig. 6 is the planar structure schematic diagram of the 6th kind of embodiment.
The specific embodiment
Refer to Fig. 1, the utility model provides a kind of voltage stabilizing feeding system of extrusion type intermittent coating, comprise slurry storage tank 1, measuring pump 2, feeder channel 3, switching valve 4, coating passage 5, return flow line 6 and control circuit 7, wherein, slurry storage tank 1 is for storing coating sizing-agent; Measuring pump 2 is for flowing to feeder channel 3 by the coating sizing-agent of the storage of slurry storage tank 1 by the required corresponding flow pump of technological requirement thickness; The entrance point of switching valve 4 is connected with the port of export of feeder channel 3, and for being coated with the switching of passage 5 and return flow line 6, the switching valve 4 in embodiment illustrated in fig. 1 is two single channel stop valves 41, is located at respectively among described coating passage 5 and return flow line 6; Coating passage 5 for flowing to slurry extrusion coated 8 within the coating time; Return flow line 6 within the intermittent time by backflow of slurry to slurry storage tank 1; Control circuit 7 is electrically connected with measuring pump 2 and switching valve 4, and controls measuring pump 2 and switching valve 4 co-ordinations; In described coating passage 5 and return flow line 6, be respectively equipped with coating pressure limiting valve 51 and reflux pressure limiting valve 61, be coated with the size of pressure limiting valve 51 and reflux pressure limiting valve 61 flows by adjusting, keep the basic homeostasis of slurry pressure in feeder channel 3, and guarantee that slurry coating flow meets the technological requirement of predetermined coating thickness.The on the one hand constancy of volume of valve pocket when guaranteeing the switching of switching valve 4 of native system, the switching of switching valve 4 impacts pressure can to coating passage 5 like this, adopt on the other hand in coating passage 5 and return flow line 6 and be respectively equipped with and be coated with pressure limiting valve 51 and reflux pressure limiting valve 61, be coated with the size of pressure limiting valve 51 and reflux pressure limiting valve 61 flows by adjusting, guarantee the basic homeostasis of pressure of feeder channel 3, like this, realization " equivalent is entered and wait to measure " that just can be real, that is to say at the uniform velocity equivalent charging within any unit interval, also realize at the uniform velocity discharging of equivalent within any unit interval simultaneously, reach all even objects of closing the predetermined coating thickness standard of symbol of slurry coating.
In the present embodiment, described coating pressure limiting valve 51 and/or reflux pressure limiting valve 61 are pressure limiting valves of capable of regulating flow quantity; Described coating pressure limiting valve 51 and/or reflux pressure limiting valve 61 can be choke valves, can be also pressure maintaining valves; Or the combination of choke valve and pressure maintaining valve.
In the present embodiment, as as described in being arranged on, the pressure maintaining valve on coating passage can be described as coating pressure maintaining valve, coating pressure maintaining valve is the output flow that regulates coating pressure maintaining valve according to the outflow pressure of coating pressure maintaining valve, as the pressure maintaining valve being arranged on return flow line can be described as backflow pressure maintaining valve, described backflow pressure maintaining valve is the output flow that regulates backflow pressure maintaining valve according to the feed pressure of backflow pressure maintaining valve.
For the ease of the pressure in observation feeder channel 3, on described feeder channel 3, be provided with the pressure sensor 31 for monitoring the slurry pressure in described feeder channel 3; Described pressure sensor can be digital pressure sensor or pointer pressure sensor; As while being digital pressure sensor, described digital pressure sensor can be converted to data signal by the force value of feeder channel 3, thereby feed back to control circuit 7 and automatically regulate the uninterrupted that is coated with pressure limiting valve 51 and/or reflux pressure limiting valve 61, reach the basic homeostasis of the interior slurry pressure of feeder channel 3, and reach all even objects of closing the predetermined coating thickness standard of symbol of slurry coating.
In the utility model, described switching valve 4 is that its valve pocket volume keeps the switching valve of basic homeostasis in the time that switching valve 4 opens or cuts out.
In embodiment illustrated in fig. 1, described switching valve 4 is two single channel stop valves 41, is located at respectively among described coating passage 5 and return flow line 6, and described single channel stop valve 41, in the time opening or close, keeps the volume homeostasis in valve pocket.Further, described single channel stop valve 41 comprises valve body 411 and spool 412, and described spool 412 is arranged in the valve pocket 413 of described valve body 411, and described valve pocket 413 is communicated with the import 414 and the outlet 415 that are located on valve body 411, one drive rod 416 is through two relative bottom surface 417,418 and described valve pockets 413 of described valve body 411, and be fixedly connected with in valve pocket 413 with described spool 412, one end of drive rod 416 outside described valve body 411 is connected with device for driving valve body 419, described device for driving valve body 419 drives described spool 412 to coordinate with ring 4191 in valve pocket, cuts off or conducting fluid passage, the utility model is owing to having adopted the two relative bottom surfaces 417 of drive rod 416 through described valve body 411, 418 and described valve pocket 413, and the structure being fixedly connected with in valve pocket 413 with described spool 412, even if drive rod 416 is under device for driving valve body 419 drives like this, from valve body 411 when stretching into certain length in valve pocket 413, the other end of drive rod 416 also can synchronously stretch out identical length outside valve body 411, ensure the constancy of volume of valve pocket 413, like this, just can not stretch into valve pocket as traditional drive rod time, can occupy the constant volume in valve pocket, and cause the slurry impact of coating in passage, and a formation thick problem, and cause the thin phenomenon of tail at valve closing, or in the time that valve is oppositely installed, when opening or closing switching valve, cause valve pocket internal volume to increase or reduce, and making backflow of slurry cause phenomenon thin or that tail is thick, in the present embodiment, described spool 412 is plate shaped, cone-shaped or spheric away from the end face 4121 that encircles 4191 in described valve pocket, like this, can reduce as much as possible end face impact on pulp flow speed in the time of motion of spool, keep the pressure of feeder channel substantially constant.
In the utility model, described device for driving valve body 419 can be electronic, pneumatic or fluid pressure drive device.
Referring to Fig. 2 and Tu, Fig. 2 is the planar structure schematic diagram of the another kind of embodiment of the utility model.Fig. 3 is the planar structure schematic diagram of the third embodiment.Fig. 2 with embodiment illustrated in fig. 3 with shown in Fig. 1 implement compared with, its structure is substantially identical, difference is that single channel stop valve 41 is different from the position relationship of coating pressure limiting valve 51 and/or reflux pressure limiting valve 61, single channel stop valve 41 and the position relationship that is coated with pressure limiting valve 51 and/or reflux pressure limiting valve 61 are described, do not affect normal use of the present utility model.
Refer to Fig. 4, described switching valve 4 can be a two-way stop valve 42, described two-way stop valve 42 entrance points are connected with described feeder channel 3, two ports of export are connected with described coating passage 5 and return flow line 6 respectively, described two-way stop valve 42, in the time opening or close, keeps the volume homeostasis in valve pocket.
In the present embodiment, described two-way stop valve 42 is Direct Action Type two-way stop valves 421, described Direct Action Type two-way stop valve 421 comprises Direct Action Type valve body 4212, the first Direct Action Type spool 4213, the second Direct Action Type spool 4214, described the first Direct Action Type spool 4213, the second Direct Action Type spool 4214 are arranged in the Direct Action Type valve pocket 4215 of described Direct Action Type valve body 4212, and described Direct Action Type valve pocket 4215 is communicated with the import 4216, the first outlet 4217 and the second outlet 4218 that are located on described Direct Action Type valve body 4212, one Direct Action Type drive rod 4219 is through two relative bottom surfaces 42191 of described Direct Action Type valve body 4212, 42191 ' and described Direct Action Type valve pocket 4215, and with described the first Direct Action Type spool 4213, the second Direct Action Type spool 4214 is fixedly connected with in described Direct Action Type valve pocket 4215, one end of Direct Action Type drive rod 4219 outside described Direct Action Type valve body 4212 is connected with Direct Action Type device for driving valve body 42192, described Direct Action Type device for driving valve body 42192 drives described the first Direct Action Type spool 4213, the second Direct Action Type spool 4214 coordinates with the interior ring 42193 of valve pocket first and the interior ring 42194 of valve pocket second respectively, alternately select fluid passage.In the present embodiment, because the first Direct Action Type spool 4213, the second Direct Action Type spool 4214 are all located in valve pocket 4215, and Direct Action Type drive rod 4219 is through two relative bottom surfaces 42191,42191 ' of described Direct Action Type valve body 4212, like this, just can not stretch into valve pocket as traditional drive rod time, can occupy the constant volume in valve pocket, and cause the slurry impact in coating passage, and form a thick problem; And cause the thin phenomenon of tail at valve closing, or in the time that valve is oppositely installed, when opening or closing switching valve, cause valve pocket internal volume to increase or reduce, and making backflow of slurry cause phenomenon thin or that tail is thick.
Described the first Direct Action Type spool 4213 is plate shaped, cone-shaped or spheric away from the end face 42131 of the interior ring 42193 of described valve pocket first, and/or described the second Direct Action Type spool 4214 is plate shaped, cone-shaped or spheric (not drawing) away from the end face 42132 of the interior ring 42194 of described valve pocket second.Like this, can reduce as much as possible end face impact on pulp flow speed in the time of motion of spool, keep the pressure in feeder channel 3 substantially constant.
Refer to Fig. 5, described two-way stop valve 42 is swing type two-way stop valves 422, described swing type two-way stop valve 422 comprises swing type valve body 4221, the first swing type spool 4223, the second swing type spool 4224, described the first swing type spool 4223, the second swing type spool 4224 are arranged in the swing type valve pocket 4225 of described swing type valve body 4221, and described swing type valve pocket 4225 is communicated with the import 4226, the first outlet 4227 and the second outlet 4228 that are located on described swing type valve body 4221; the first rotary drive bar 4229 is arranged in described swing type valve pocket 4225, and with described the first swing type spool 4223, the second swing type spool 4224 is fixedly connected with in described swing type valve pocket 4225, also be provided with the second rotary drive bar 42295 at described swing type valve pocket 4225, one end of described the second rotary drive bar 42295 is flexibly connected with the mid point 42291 of described the first rotary drive bar 4229, one end of described the second rotary drive bar 42295 is connected with the 3rd rotary drive bar 42296 perpendicular to described the second rotary drive bar 42295, one end of the 3rd rotary drive bar 42296 outside described swing type valve body 4221 and dotted portion in swing type device for driving valve body 42292(figure) be connected, described swing type device for driving valve body 42292 drives described the first swing type spool 4223, the second swing type spool 4224 coordinates (swinging back and forth along 42297 directions of arrow in figure) with the interior ring 42293 of swing type valve pocket first and the interior ring 42294 of swing type valve pocket second respectively, alternately select fluid passage.Like this, just can not stretch into valve pocket as traditional drive rod time, can occupy the constant volume in valve pocket, and cause the slurry impact in coating passage, and form a thick problem; And cause the thin phenomenon of tail at valve closing, or in the time that valve is oppositely installed, when opening or closing switching valve, cause valve pocket internal volume to increase or reduce, and making backflow of slurry cause phenomenon thin or that tail is thick.
Described the first swing type spool 4223 is plate shaped, cone-shaped or spheric away from the end face 42231 of the interior ring 42293 of described swing type valve pocket first; Described the second swing type spool 4224 is plate shaped, cone-shaped or spheric (not drawing) away from the end face 42232 of the interior ring 42294 of described swing type valve pocket second.Like this, can reduce as much as possible end face impact on pulp flow speed in the time of motion of spool, keep the pressure of feeder channel substantially constant.
Refer to Fig. 6, described two-way stop valve 42 is eccentric wheel two-way stop valves 423, described eccentric wheel two-way stop valve 423 comprises eccentric wheel valve body 4231, the first eccentric wheel spool 4233, the second eccentric wheel spool 4234, described the first eccentric wheel spool 4233, the second eccentric wheel spool 4234 are arranged in the eccentric wheel valve pocket 4235 of described eccentric wheel valve body 4231, are respectively equipped with the first back-moving spring 42391 and the second back-moving spring 42392 at the back side of described the first eccentric wheel spool 4233 and the second eccentric wheel spool 4234; Described eccentric wheel valve pocket 4235 is communicated with the import 4236, the first outlet 4237 and the second outlet 4238 that are located on described eccentric wheel valve body 4231; One eccentric wheel 4239 arranges between described the first eccentric wheel spool 4233 and the second eccentric wheel spool 4234, one eccentric wheel drive rod 42395 is connected with described eccentric wheel 4239, eccentric wheel drive rod 42395 other ends stretch out in outside described eccentric wheel valve body 4231, and be connected with eccentric wheel device for driving valve body, described eccentric wheel device for driving valve body drives described the first eccentric wheel spool 4233, the second eccentric wheel spool 4234 to coordinate with the interior ring 42393 of eccentric wheel valve pocket first and the interior ring 42394 of eccentric wheel valve pocket second respectively, alternately selects fluid passage.Like this, just can not stretch into valve pocket as traditional drive rod time, can occupy the constant volume in valve pocket, and cause the slurry impact in coating passage, and form a thick problem; And cause the thin phenomenon of tail at valve closing, or in the time that valve is oppositely installed, when opening or closing switching valve, cause valve pocket internal volume to increase or reduce, and making backflow of slurry cause phenomenon thin or that tail is thick.
Described the first eccentric wheel spool 4233 is plate shaped, cone-shaped or spheric away from the end face 42331 of the interior ring 42393 of described eccentric wheel valve pocket first.Described the second eccentric wheel spool 4234 is plate shaped, cone-shaped or spheric (not drawing) away from the end face 42332 of the interior ring 42394 of described eccentric wheel valve pocket second.Like this, can reduce as much as possible end face impact on pulp flow speed in the time of motion of spool, keep the pressure of feeder channel substantially constant.
Claims (2)
1. a voltage stabilizing feeding system for extrusion type intermittent coating, comprises slurry storage tank (1), measuring pump (2), feeder channel (3), switching valve (4), coating passage (5), return flow line (6) and control circuit (7), wherein,
Slurry storage tank (1) is for storing coating sizing-agent;
Measuring pump (2) is for giving feeder channel (3) by the coating sizing-agent of the storage of slurry storage tank (1) by the required corresponding flow pump of technological requirement thickness;
The entrance point of switching valve (4) is connected with the port of export of feeder channel (3), for alternately selecting to be coated with passage (5) and return flow line (6);
Coating passage (5) for flowing to slurry extrusion coated head (8) within the coating time;
Return flow line (6) within the intermittent time by backflow of slurry to slurry storage tank (1);
Control circuit (7) is electrically connected with measuring pump (2) and switching valve (4), and controls measuring pump (2) and switching valve (4) co-ordination; It is characterized in that:
In described coating passage (5) and return flow line (6), be respectively equipped with coating pressure limiting valve (51) and reflux pressure limiting valve (61), keep the basic homeostasis of slurry pressure in feeder channel (3) by coating pressure limiting valve (51) and reflux pressure limiting valve (61), assurance slurry is coated with stability of flow and meets the technological requirement of predetermined coating thickness.
2. the voltage stabilizing feeding system of extrusion type intermittent coating according to claim 1, is characterized in that: described coating pressure limiting valve (51) and/or reflux pressure limiting valve (61) are the pressure limiting valves that can carry out by the sectional area of control valve passage the pressure of stable material-supplying passage.
3. the voltage stabilizing feeding system of extrusion type intermittent coating according to claim 1, is characterized in that: described coating pressure limiting valve (51) and/or reflux pressure limiting valve (61) are choke valve or pressure maintaining valve; Or the combination of choke valve and pressure maintaining valve.
4. the voltage stabilizing feeding system of extrusion type intermittent coating according to claim 3, it is characterized in that: the pressure maintaining valve being arranged on described coating passage is called coating pressure maintaining valve, coating pressure maintaining valve is the output flow that regulates coating pressure maintaining valve according to the outflow pressure of coating pressure maintaining valve, the pressure maintaining valve being arranged on return flow line is called backflow pressure maintaining valve, and described backflow pressure maintaining valve is the output flow that regulates backflow pressure maintaining valve according to the feed pressure of backflow pressure maintaining valve.
5. according to the voltage stabilizing feeding system of the extrusion type intermittent coating described in claim 1,2 or 3, it is characterized in that: described switching valve (4) is that its valve pocket volume keeps the switching valve of basic homeostasis in the time that switching valve (4) opens or cuts out.
6. the voltage stabilizing feeding system of extrusion type intermittent coating according to claim 5, it is characterized in that: described switching valve (4) is two single channel stop valves (41), described single channel stop valve (41) comprises valve body (411) and spool (412), described spool (412) is arranged in the valve pocket (413) of described valve body (411), and described valve pocket (413) is communicated with the import (414) and the outlet (415) that are located on valve body (411); One drive rod (416) is through two relative bottom surface (417,418) and described valve pockets (413) of described valve body (411), and be fixedly connected with in valve pocket (413) with described spool (412), one end of drive rod (416) outside described valve body (411) is connected with device for driving valve body (419), described device for driving valve body (419) drives described spool (412) to coordinate with ring (4191) in valve pocket, cuts off or conducting fluid passage.
7. the voltage stabilizing feeding system of extrusion type intermittent coating according to claim 5, it is characterized in that: described switching valve (4) is a two-way stop valve (42), described two-way stop valve (42) entrance point is connected with described feeder channel (3), two ports of export are connected with described coating passage (5) and return flow line (6) respectively, described two-way stop valve (42), in the time opening or close, keeps the volume homeostasis in valve pocket.
8. the voltage stabilizing feeding system of extrusion type intermittent coating according to claim 7, it is characterized in that: described two-way stop valve (42) is Direct Action Type two-way stop valve (421), described Direct Action Type two-way stop valve (421) comprises Direct Action Type valve body (4212), the first Direct Action Type spool (4213), the second Direct Action Type spool (4214), described the first Direct Action Type spool (4213), the second Direct Action Type spool (4214) is arranged in the Direct Action Type valve pocket (4215) of described Direct Action Type valve body (4212), described Direct Action Type valve pocket (4215) be located at the import (4216) on described Direct Action Type valve body (4212), the first outlet (4217) and the second outlet (4218) are communicated with, one Direct Action Type drive rod (4219) is through two relative bottom surfaces (42191 of described Direct Action Type valve body (4212), 42191 ') and described Direct Action Type valve pocket (4215), and with described the first Direct Action Type spool (4213), the second Direct Action Type spool (4214) is fixedly connected with in described Direct Action Type valve pocket (4215), one end of Direct Action Type drive rod (4219) outside described Direct Action Type valve body (4212) is connected with Direct Action Type device for driving valve body (42192), described Direct Action Type device for driving valve body (42192) drives described the first Direct Action Type spool (4213), the second Direct Action Type spool (4214) coordinates with the interior ring of valve pocket first (42193) and the interior ring of valve pocket second (42194) respectively, alternately select fluid passage.
9. the voltage stabilizing feeding system of extrusion type intermittent coating according to claim 7, it is characterized in that: described two-way stop valve (42) is swing type two-way stop valve (422), described swing type two-way stop valve (422) comprises swing type valve body (4221), the first swing type spool (4223), the second swing type spool (4224), described the first swing type spool (4223), the second swing type spool (4224) is arranged in the swing type valve pocket (4225) of described swing type valve body (4221), described swing type valve pocket (4225) be located at the import (4226) on described swing type valve body (4221), the first outlet (4227) and the second outlet (4228) are communicated with, the first rotary drive bar (4229) is arranged in described swing type valve pocket (4225), and with described the first swing type spool (4223), the second swing type spool (4224) is fixedly connected with in described swing type valve pocket (4225), also be provided with the second rotary drive bar (42295) at described swing type valve pocket (4225), one end of described the second rotary drive bar (42295) is flexibly connected with the mid point (42291) of described the first rotary drive bar (4229), one end of described the second rotary drive bar (42295) is connected with the 3rd rotary drive bar (42296) perpendicular to described the second rotary drive bar (42295), outside described swing type valve body (4221), the 3rd rotary drive bar (42296) of one end is connected with swing type device for driving valve body (42292), described swing type device for driving valve body (42292) drives described the first swing type spool (4223), the second swing type spool (4224) coordinates with the interior ring of swing type valve pocket first (42293) and the interior ring of swing type valve pocket second (42294) respectively, alternately select fluid passage.
10. the voltage stabilizing feeding system of extrusion type intermittent coating according to claim 7, it is characterized in that: described two-way stop valve (42) is eccentric wheel two-way stop valve (423), described eccentric wheel two-way stop valve (423) comprises eccentric wheel valve body (4231), the first eccentric wheel spool (4233), the second eccentric wheel spool (4234), described the first eccentric wheel spool (4233), the second eccentric wheel spool (4234) is arranged in the eccentric wheel valve pocket (4235) of described eccentric wheel valve body (4231), the back side at described the first eccentric wheel spool (4233) and the second eccentric wheel spool (4234) is respectively equipped with the first back-moving spring (42391) and the second back-moving spring (42392), described eccentric wheel valve pocket (4235) is communicated with the import (4236), the first outlet (4237) and the second outlet (4238) that are located on described eccentric wheel valve body (4231), one eccentric wheel (4239) arranges between described the first eccentric wheel spool (4233) and the second eccentric wheel spool (4234), one eccentric wheel drive rod (42395) is connected with described eccentric wheel (4239), eccentric wheel drive rod (42395) other end stretches out in outside described eccentric wheel valve body (4231), and be connected with eccentric wheel device for driving valve body, described eccentric wheel device for driving valve body drives described the first eccentric wheel spool (4233), the second eccentric wheel spool (4234) coordinates with the interior ring of eccentric wheel valve pocket first (42393) and the interior ring of eccentric wheel valve pocket second (42394) respectively, alternately select fluid passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320876312.XU CN203664140U (en) | 2013-12-30 | 2013-12-30 | Pressure-stabilized feeding system for extrusion type intermittent coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320876312.XU CN203664140U (en) | 2013-12-30 | 2013-12-30 | Pressure-stabilized feeding system for extrusion type intermittent coating |
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| CN203664140U true CN203664140U (en) | 2014-06-25 |
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| CN201320876312.XU Withdrawn - After Issue CN203664140U (en) | 2013-12-30 | 2013-12-30 | Pressure-stabilized feeding system for extrusion type intermittent coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706527A (en) * | 2013-07-29 | 2014-04-09 | 深圳市信宇人科技有限公司 | Extrusion-type intermittent coating steady-pressure feeding method and system |
| CN107694833A (en) * | 2017-05-26 | 2018-02-16 | 广州犀鸟工业设计有限公司 | A kind of easily adhesive dispensing robot |
| CN114887845A (en) * | 2022-06-17 | 2022-08-12 | 三一技术装备有限公司 | Feeding system, slurry coating device and battery production system |
-
2013
- 2013-12-30 CN CN201320876312.XU patent/CN203664140U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706527A (en) * | 2013-07-29 | 2014-04-09 | 深圳市信宇人科技有限公司 | Extrusion-type intermittent coating steady-pressure feeding method and system |
| CN107694833A (en) * | 2017-05-26 | 2018-02-16 | 广州犀鸟工业设计有限公司 | A kind of easily adhesive dispensing robot |
| CN114887845A (en) * | 2022-06-17 | 2022-08-12 | 三一技术装备有限公司 | Feeding system, slurry coating device and battery production system |
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