An electrospinning device with a liquid reservoir

Abstract

The invention provides an electrostatic spinning device with a liquid storage device, which belongs to the technical field of electrostatic spinning. The device comprises a base component, a push assembly, an injection assembly, a liquid storage assembly, a shunt pipe and a push valve. The push seat is connected to the push screw for transmission, which can not only form the injection action of the push rod, but also form the rotation action of the stirring shaft, so that when the liquid storage barrel is in a self-circulating heating state, the solution can be heated more evenly; the shunt pipe is connected to the side wall of the liquid storage barrel, the push valve core is slidably inserted in the liquid separation pipe, and the lifting rack and the screw gear are driven by the telescopic rod of the electric cylinder to form a matching transmission, so that the push valve core and the inner valve cylinder can move, which can not only form the liquid supply state of the liquid storage barrel to the injection barrel, but also realize the circulatory heating work of the liquid storage barrel, so that the solution can not only enter the injection barrel from the liquid storage barrel in batches according to the operation, but also form self-circulating heating in the non-injection operation state, thereby increasing the fluidity of the solution in the jet spinning process.

Description

Technical Field

[0001] The invention relates to the technical field of electrostatic spinning, and in particular to an electrostatic spinning device with a liquid reservoir. Background Art

[0002] The principle of electrospinning is to first charge the polymer solution with high voltage static electricity of several thousand to tens of thousands of volts. The charged polymer droplets are accelerated at the Taylor cone pole of the capillary under the action of the high voltage electric field force. When the electric field force is large enough, the polymer droplets overcome the surface tension to form a gushing stream. During the gushing process, the solvent evaporates or solidifies, and finally falls on the receiving device to form a fiber felt similar to a non-woven fabric.

[0003] The existing electrospinning device directly works by adding the polymer solution into the needle tube. Since the amount of solution required for a single operation is small, the solution in a single needle tube needs to be left standing for a long time before it can be used up. If the solution is left standing for a long time, the flow force will decrease. On the other hand, if the solution is kept at an unreasonable temperature setting, its flow force will also decrease, affecting the final spinning quality. Summary of the invention

[0004] The purpose of the present invention is to provide an electrospinning device with a liquid storage device, which not only uses a push valve to form a connection between the liquid storage barrel and the injection cylinder, but also can enable the liquid storage barrel to perform self-circulating heating when the injection cylinder is in a working state, so that the liquid storage barrel is set at a certain temperature and supplies solution to the injection cylinder in batches.

[0005] The object of the present invention is achieved through such a technical solution, an electrospinning device with a liquid reservoir, comprising a base component, a push assembly, an injection assembly, a liquid storage assembly, a shunt pipe and a push valve, the push assembly comprises a push screw and a push seat, the injection assembly comprises an injection cylinder, a push rod and an inner liquid hole, the liquid storage assembly comprises a liquid storage barrel and a stirring shaft, the shunt pipe comprises a liquid supply pipe and a liquid distribution pipe, the push valve comprises a push valve core, a first interface, a second interface, a third interface, an inner valve cylinder, a valve cylinder liquid inlet and a valve cylinder liquid outlet;

[0006] The push screw is laterally screwed to the middle of the top end of the base component, the top end of the base component is slidably connected with a push seat, and the push seat is drivingly connected to the push screw, the injection cylinder is fixed to one side of the top end of the base component, the push rod is slidably inserted in the injection cylinder, and the end of the push rod is connected to one side of the push seat, the head end side wall of the injection cylinder is connected to a liquid discharge pipe, the inner liquid hole is laterally opened in the inner middle part of the push rod, and the outer side wall of the push rod is connected to the liquid passing pipe;

[0007] The liquid storage barrel is fixedly arranged on the other side of the push seat, the discharge pipe is connected to the liquid storage barrel and can be turned on and off, the stirring shaft is screwed on the inner middle part of the liquid storage barrel and is connected to the transmission rubber wheel, the liquid distribution pipe is horizontally connected to the outer wall of the liquid storage barrel, and the bottom inlet of the liquid distribution pipe is connected to the inner cavity of the liquid storage barrel through the liquid supply pipe, the top of the liquid distribution pipe is respectively connected to the liquid supply pipe and the return pipe, and the return pipe is connected to the inner cavity of the liquid storage barrel, the liquid supply pipe is connected to the liquid passing pipe, the push valve core is horizontally fixed to the inner valve cylinder, the push valve core is slidably inserted in the liquid distribution pipe, the inner valve cylinder is slidably inserted in the inner liquid passing hole, the first interface, the second interface and the third interface The first and second interfaces are both opened at one end of the push valve core, and the first interface is connected to the second interface, the third interface is connected to the first and second interfaces, the valve cylinder liquid inlet and the valve cylinder liquid outlet are both opened in the cylinder wall of the inner valve cylinder, and when the push valve core moves to the position where the first interface and the second interface are connected between the liquid supply pipe and the liquid supply connecting pipe, the valve cylinder liquid inlet is connected to the liquid passing pipe, and the valve cylinder liquid outlet extends out of the push rod head end, and when the push valve core moves to the position where the second interface and the third interface are connected between the liquid supply pipe and the return pipe, the valve cylinder liquid inlet is cut off from the liquid passing pipe, and the valve cylinder liquid outlet is sealed and recovered into the inner liquid passing hole.

[0008] The use process of the technical solution of the present invention is as follows:

[0009] In the initial state, there is polymer solution in both the syringe and the liquid storage barrel. The polymer solution in the syringe is sufficient to complete the electrostatic spinning operation of the current batch. The positive rotation of the automatically rotatable push screw drives the lateral movement of the push seat, which can promote the movement of the push rod, so that the head end of the push rod pressurizes the polymer solution in the inner cavity of the syringe, so that the polymer solution flows out from the outlet of the head end of the syringe. The high-voltage electric field formed by the high-voltage power supply connecting the syringe and the needle connected to the outlet can form an electrostatic spinning operation;

[0010] In the working state of electrospinning, the valve cylinder liquid outlet at the head end of the inner valve cylinder is recovered into the inner liquid hole, and the valve core is pushed to the position of cutting off the liquid supply pipe and the inner cavity of the liquid storage barrel, that is, the third interface and the second interface are connected between the inner cavity of the liquid storage barrel and the return pipe;

[0011] The liquid supply pipe is provided with not only an electric heating device but also a pump body. When the push valve core is moved to a position where the inner cavity of the liquid storage barrel is connected to the return pipe separately, the unused polymer solution in the inner cavity of the liquid storage barrel can be preheated in a cyclic manner.

[0012] When the push screw rotates, the transmission mechanism can also drive the stirring shaft in the inner cavity of the liquid storage barrel to rotate, thereby stirring the polymer solution in the inner cavity of the liquid storage barrel to make it heated more evenly.

[0013] When the polymer solution of the current batch in the syringe has been used to the critical capacity, it is necessary to replenish the syringe through the liquid storage barrel, stop the forward rotation of the push screw, stop the pushing state of the push rod, and drive the first interface and the second interface to move to the position where the liquid supply pipe and the liquid supply pipe are connected through the push valve core and the inner valve cylinder that can be automatically moved and switched, the synchronous valve cylinder liquid inlet is connected to the liquid pipe, and the valve cylinder liquid outlet extends out of the push rod head end; and at this time, the cavity between the syringe inner cavity and the push rod is sufficient to provide space for the extension of the valve cylinder liquid outlet;

[0014] At this time, the inner cavity of the syringe is connected to the inner cavity of the liquid storage barrel through the valve barrel liquid outlet, the valve barrel liquid inlet, the liquid pipe, the liquid supply pipe, the second interface, the first interface and the liquid supply pipe in sequence, and the push screw is started to reverse, so that the push rod forms an action of extracting liquid, and a negative pressure is formed in the inner cavity of the syringe, so that the heated polymer solution in the liquid storage barrel enters the syringe until it is injected and filled to the set capacity of the syringe, and the capacity of the polymer solution stored in the connecting pipeline between the inner cavity of the syringe and the liquid storage barrel is much smaller than the capacity of the polymer solution injected into the inner cavity of the syringe, and the polymer solution retained in the connecting pipeline between the inner cavity of the syringe and the liquid storage barrel has a negligible effect on the temperature of the polymer solution injected into the inner cavity of the syringe as a whole;

[0015] After the polymer solution in the injection barrel is supplemented and added, the reversal of the push screw is stopped, and the valve barrel liquid outlet is sealed and recovered into the inner liquid hole through the push valve core and the inner valve cylinder that can automatically switch and move, and the second interface and the third interface at one end of the push valve core are moved to the position where the reflux pipe is connected to the liquid supply pipe, and the polymer solution in the liquid storage barrel re-enters the self-circulation heating state.

[0016] By adopting the above technical solution, the present invention can achieve the following beneficial effects:

[0017] (1) The present invention is not only provided with a push assembly and an injection assembly, but also with a push seat that can push the push rod by rotating the push screw, thereby forming an injection action for the polymer solution in the injection barrel. A liquid storage barrel for storing the polymer solution in batches is placed on one side of the push seat, and a flow dividing pipe and a push valve are arranged between the liquid storage barrel and the injection barrel. Based on the liquid dividing pipe, a liquid supply pipe and a return pipe connected to the inner cavity of the liquid storage barrel are respectively connected at both ends of the liquid dividing pipe, and a liquid supply pipe connected to the liquid passing pipe is arranged. A first connecting pipe connected to each other is provided at one end of the push valve core. The first interface and the second interface are connected to the liquid supply pipe and the liquid supply pipe, and the liquid inlet of the valve cylinder is moved to the liquid pipe to be connected, and the liquid outlet of the valve cylinder is extended to the outside of the push rod head end, so as to form an operation of replenishing the solution in the injection cylinder cavity, and after the second interface and the third interface are connected to the liquid supply pipe and the return pipe, the liquid inlet of the valve cylinder is moved to the cut-off position, and the liquid outlet of the valve cylinder is recovered to the push rod head end, so as to form a self-circulating heating operation of the solution in the liquid storage barrel;

[0018] (2) The stirring shaft screwed into the liquid storage barrel of the present invention is also connected to the push screw for transmission, so that when the push screw rotates, it can synchronously drive the mixing and stirring of the solution in the liquid storage barrel, so that the solution is heated more evenly during the heating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A schematic diagram of the overall structure of an electrospinning device with a liquid reservoir provided by the present invention;

[0021] Figure 2 The structure of the base member and the push assembly of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the installation of the injection assembly of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the push rod part of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the liquid storage assembly of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the transmission part of the liquid storage assembly of the present invention;

[0026] Figure 7 It is a schematic diagram of the installation structure of the flow dividing pipe fitting of the present invention;

[0027] Figure 8 It is a schematic diagram of the pipeline connection of the flow dividing pipe fitting of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the push valve member of the present invention;

[0029] Fig.10 It is a structural schematic diagram of the push valve core and the inner valve cylinder part of the present invention;

[0030] Fig.11 It is a schematic diagram of the pipeline connection between the push valve core and the inner valve cylinder of the present invention;

[0031] Fig.12 It is a structural schematic diagram of the switching screw part of the present invention;

[0032] Fig.13 It is a schematic structural diagram of the outer bayonet and the inner bayonet of the present invention;

[0033] Fig.14 It is a schematic diagram of the structure of the locking assembly of the present invention;

[0034] Fig.15 It is a schematic structural diagram of the inner elastic clamping column part of the present invention.

[0035] Reference numerals:

[0036] Base component; 101, base; 102, jacket;

[0037] Pushing assembly; 201, slide rod; 202, slide seat; 203, screw inner rotating seat; 204, servo motor; 205, push screw; 206, screw slider; 207, push seat;

[0038] Injection assembly; 301, syringe; 302, liquid outlet pipe; 303, liquid outlet valve; 304, push rod; 305, outer sleeve; 306, inner sleeve; 307, liquid discharge pipe; 308, liquid discharge valve; 309, rubber head; 310, inner liquid hole; 311, liquid tube;

[0039] Liquid storage assembly; 401, bottom connecting plate; 402, liquid storage barrel; 403, liquid filling port; 404, top cover; 405, liquid return pipe; 406, liquid return connecting pipe; 407, bottom rotating seat; 408, stirring shaft; 409, bottom shaft seat; 410, bottom rotating shaft; 411, transmission rubber wheel; 412, transmission bevel gear; 413, rotating bevel gear;

[0040] Dividing pipe fittings; 501, liquid supply pipe; 502, liquid distribution pipe; 503, liquid supply connecting pipe; 504, return pipe; 505, liquid supply pump; 506, heating sleeve;

[0041] Push valve member; 601, push valve core; 602, side notch; 603, switch lead screw slide; 604, switch lead screw outer seat; 605, switch lead screw inner seat; 606, first interface; 607, second interface; 608, third interface; 609, switch seal ring; 610, liquid supply connecting pipe; 611, inner valve cylinder; 612, valve cylinder liquid inlet; 613, valve cylinder liquid outlet; 614, inlet sealing sleeve; 615, outlet sealing sleeve; 616, switch lead screw; 617, lead screw gear; 618, electric cylinder; 619, lifting plate; 620, lifting rack;

[0042] Locking assembly; 701, outer snap-in; 702, inner snap-in; 703, snap-in column; 704, inner elastic snap-in column; 705, pressure relief block; 706, bottom cover; 707, inner top spring. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0045] like Figure 1-Figure 15As shown, an electrospinning device with a liquid reservoir, a push screw 205 in the push assembly is transversely screwed to the middle of the top end of the base member, a push seat 207 is slidably connected to the top end of the base member, and the push seat 207 is transmission-connected to the push screw 205, an injection barrel 301 is fixed to one side of the top end of the base member, a push rod 304 is slidably inserted into the injection barrel 301, and the end of the push rod 304 is connected to one side of the push seat 207, which can form an injection action of the push rod 304, a discharge pipe 307 is connected to the side wall of the head end of the injection barrel 301, an inner liquid hole 310 is transversely opened in the inner middle part of the push rod 304, a liquid pipe 311 is connected to the outer wall of the push rod 304, and the liquid pipe 311 is connected to the inner liquid hole 310;

[0046] The liquid storage barrel 402 is fixedly arranged on the other side of the push seat 207, the liquid discharge pipe 307 is connected to the liquid storage barrel 402 and can be turned on and off, the stirring shaft 408 is screwed to the inner middle part of the liquid storage barrel 402 and is connected to the conductive rubber wheel 411 in a transmission manner, the liquid distribution pipe 502 is horizontally connected to the outer wall of the liquid storage barrel 402, and the bottom inlet of the liquid distribution pipe 502 is connected to the inner cavity of the liquid storage barrel 402 through the liquid supply pipe 501, and the liquid distribution pipe 50 2 are respectively connected to the top of the liquid supply pipe 503 and the return pipe 504, and the return pipe 504 is connected to the inner cavity of the liquid storage barrel 402, the liquid supply pipe 503 is connected to the liquid passing pipe 311, the push valve core 601 is transversely fixed to the inner valve cylinder 611, the push valve core 601 is slidably inserted in the liquid distribution pipe 502, the inner valve cylinder 611 is slidably inserted in the inner liquid passing hole 310, the first interface 606, the second interface 607 and the third interface 608 are both opened at one end of the push valve core 601, and the first interface 606 is connected to the second interface 607, the third interface 608 is connected to the first interface 606 and the second interface 607, the valve cylinder liquid inlet 612 and the valve cylinder liquid outlet 613 are both opened in the cylinder wall of the inner valve cylinder 611, and when the push valve core 601 moves to the position where the first interface 606 and the second interface 607 are connected between the liquid supply pipe 501 and the liquid supply connecting pipe 503, the valve cylinder liquid inlet 612 is connected to the liquid flow pipe 311, and the valve cylinder liquid outlet 613 extends out of the head end of the push rod 304, and when the push valve core 601 moves to the position where the second interface 607 and the third interface 608 are connected between the liquid supply pipe 501 and the return pipe 504, the valve cylinder liquid inlet 612 is cut off from the liquid flow pipe 311, and the valve cylinder liquid outlet 613 is sealed and recovered into the inner liquid flow hole 310.

[0047] Here’s how it works:

[0048] The syringe 301 is used to store the polymer solution for the current electrospinning operation, and the liquid storage barrel 402 is used to store the polymer solution for batch operation. An electric heating device is provided in the liquid supply pipe 501 connected to one side of the liquid storage barrel 402, the purpose of which is to transport the polymer solution at a certain temperature in the liquid storage barrel 402 to the syringe 301 in batches, so that the polymer solution for the current electrospinning operation itself has a certain set temperature, thereby improving the fluidity and injection quality of the polymer solution;

[0049] The electrical components used in the device are all connected to the electrostatic spinning machine electronic control board, and the electrostatic spinning machine control board performs electronic control operations;

[0050] In the initial state, the polymer solution is stored in both the syringe 301 and the liquid storage barrel 402. The polymer solution in the syringe 301 is sufficient to complete the electrostatic spinning operation of the current batch. The positive rotation of the automatically rotatable push screw 205 drives the lateral movement of the push seat 207, which can promote the movement of the push rod 304, so that the head end of the push rod 304 pressurizes the polymer solution in the inner cavity of the syringe 301, so that the polymer solution flows out from the outlet of the head end of the syringe 301. The high-voltage electric field formed by the high-voltage power supply connecting the syringe 301 and the needle connected to the outlet can form an electrostatic spinning operation;

[0051] In the working state of electrospinning, the valve cylinder liquid outlet 613 at the head end of the inner valve cylinder 611 is recovered into the inner liquid hole 310, and the valve core 601 is pushed to a position where the liquid supply pipe 503 and the inner cavity of the liquid storage barrel 402 are cut off, that is, the third interface 608 and the second interface 607 are connected between the inner cavity of the liquid storage barrel 402 and the return pipe 504;

[0052] The liquid supply pipe 501 is provided with not only an electric heating device but also a pump body. When the push valve core 601 is moved to a position where the inner cavity of the liquid storage barrel 402 is connected to the return pipe 504 alone, the unused polymer solution in the inner cavity of the liquid storage barrel 402 can be preheated in a cyclic manner.

[0053] When the push screw 205 rotates, the stirring shaft 408 in the inner cavity of the liquid storage barrel 402 can also be driven to rotate through the transmission mechanism to stir the polymer solution in the inner cavity of the liquid storage barrel 402 so that the polymer solution is heated more evenly.

[0054] When the polymer solution of the current batch in the syringe 301 has been used to the critical capacity, it is necessary to refill the syringe 301 through the liquid storage barrel 402, stop the forward rotation of the push screw 205, stop the pushing state of the push rod 304, and drive the first interface 606 and the second interface 607 to move to the position where the liquid supply pipe 501 and the liquid supply pipe 503 are connected through the push valve core 601 and the inner valve cylinder 611 that can be automatically moved and switched, and the synchronous valve cylinder liquid inlet 612 is connected to the liquid pipe 311, and the valve cylinder liquid outlet 613 extends out of the head end of the push rod 304; and at this time, the cavity between the inner cavity of the syringe 301 and the push rod 304 is sufficient to provide space for the extension of the valve cylinder liquid outlet 613;

[0055] At this time, the inner cavity of the syringe 301 is connected to the inner cavity of the liquid storage barrel 402 through the valve barrel liquid outlet 613, the valve barrel liquid inlet 612, the liquid pipe 311, the liquid supply pipe 503, the second interface 607, the first interface 606 and the liquid supply pipe 501 in sequence, and the push screw 205 is started to reverse, so that the push rod 304 forms an action of extracting liquid, and a negative pressure is formed in the inner cavity of the syringe 301, so that the heated polymer solution in the liquid storage barrel 402 enters the syringe 301 until it is injected and filled to the set capacity of the syringe 301, and the capacity of the polymer solution stored in the connecting pipeline between the inner cavity of the syringe 301 and the liquid storage barrel 402 is much smaller than the capacity of the polymer solution injected into the inner cavity of the syringe 301, and the polymer solution retained in the connecting pipeline between the inner cavity of the syringe 301 and the liquid storage barrel 402 has a negligible effect on the temperature of the polymer solution injected into the inner cavity of the syringe 301 as a whole;

[0056] After the polymer solution in the injection barrel 301 is supplemented and added, the reversal of the push screw 205 is stopped, and the valve barrel liquid outlet 613 is sealed and recovered into the inner liquid hole 310 through the push valve core 601 and the inner valve barrel 611 that can be automatically switched and moved, and the second interface 607 and the third interface 608 at one end of the push valve core 601 are moved to the position where the reflux pipe 504 is connected to the liquid supply pipe 501, and the polymer solution in the liquid storage barrel 402 re-enters the self-circulation heating state.

[0057] The specific structure of the base component and the push assembly is as follows Figure 2 As shown, the jacket 102 is fixedly connected to one side of the top of the base 101, and is used to form a fixed connection with the outside of the syringe 301, and the connection method between the jacket 102 and the syringe 301 is a conventional setting, which can achieve the clamping and fixing of the jacket 102 to the syringe 301;

[0058] The slide bar 201 is symmetrically fixed on the top of the base 101, and both ends of the slide seat 202 are slidably connected to the slide bar 201, and the push seat 207 is fixed on the middle of the top of the slide seat 202;

[0059] A lead screw inner rotating seat 203 is fixed in the middle of one side vertical surface of the base 101, and a servo motor 204 is installed and fixed in the middle of the other side of the base 101. One end of the push lead screw 205 is rotatably connected to the lead screw inner rotating seat 203, and the other end is fixedly connected to the rotating shaft of the servo motor 204. A lead screw slider 206 is fixed in the middle of the bottom end of the slide 202, and the lead screw slider 206 is matched and connected to the push lead screw 205.

[0060] The servo motor 204 can drive the push screw 205 to form a forward and reverse rotation state, and through the coordinated transmission formed by the push screw 205 and the screw slider 206, it can drive the slide 202 and the push seat 207 to form a lateral movement.

[0061] The specific structure of the injection assembly is as follows Figure 3 and Figure 4 As shown, the liquid outlet pipe 302 is connected to the middle of the head end of the syringe 301, the liquid outlet valve 303 is installed in the liquid outlet pipe 302, and the liquid outlet pipe 302 is connected to the external metal needle for injection, and the high-voltage power supply is electrically connected to the metal needle, so that a high-voltage electric field can be formed;

[0062] The liquid outlet valve 303 can perform an on-off operation on the liquid outlet pipe 302, and can cut off the liquid outlet pipe 302 when the polymer solution is added to the syringe 301;

[0063] The end of the push rod 304 is symmetrically fixed with an inner sleeve 306, and the head end is fixed with a rubber head 309. The inner liquid hole 310 is opened in the middle of the push rod 304 and the rubber head 309. The outer surface of the rubber head 309 is slidably connected with the inner cavity of the injection barrel 301. The outer sleeve 305 is symmetrically fixed on one side of the top of the push seat 207. The outer surface of the inner sleeve 306 is plugged and installed with the inner surface of the outer sleeve 305.

[0064] A drain valve 308 is installed in the drain pipe 307. Similarly, the drain valve 308 can perform an on-off operation on the drain pipe 307. The drain pipe 307 can be cut off when the syringe 301 is in a normal electrospinning operation process.

[0065] The specific structure of the liquid storage component is as follows Figure 5 and Figure 6 As shown, the bottom connecting plate 401 is fixed to the other side of the top of the slide seat 202, and the liquid storage barrel 402 is fixed to the top surface of the bottom connecting plate 401;

[0066] The top of the liquid storage barrel 402 is connected with a liquid adding port 403 and a liquid return pipe 405. A top cover 404 is connected to the top of the liquid adding port 403. The polymer solution and other cleaning solutions can be added to the liquid storage barrel 402. A liquid return connecting pipe 406 made of a soft material is connected between the liquid return pipe 405 and the liquid discharge pipe 307 so that the liquid return connecting pipe 406 will not interfere with the lateral movement of the liquid storage barrel 402 along with the slide 202.

[0067] The purpose of providing the liquid return connection pipe 406 is to return the polymer solution remaining in the syringe 301 to the liquid storage barrel 402 for centralized storage after the electrospinning work is completed;

[0068] A bottom rotating seat 407 is fixedly installed in the middle of the bottom end of the liquid storage barrel 402. The bottom rotating seat 407 passes through the main body of the bottom connecting plate 401 and then extends to the bottom of the bottom connecting plate 401. The bottom shaft end of the stirring shaft 408 is rotatably connected to the bottom rotating seat 407. A bottom shaft seat 409 is symmetrically fixed to the bottom surface of the bottom connecting plate 401. A bottom rotating shaft 410 is rotatably connected to the bottom shaft seat 409. A conductive rubber wheel 411 is inserted and fixed to the bottom rotating shaft 410. The conductive rubber wheel 411 is in flexible contact with the outside of the push screw 205, so that when the push screw 205 rotates, the conductive rubber wheel 411 can be synchronously driven to rotate.

[0069] A conductive bevel gear 412 is inserted and fixed in the bottom rotating shaft 410, and a rotating bevel gear 413 is fixed at the bottom end of the stirring shaft 408 and meshes with the conductive bevel gear 412, so that when the conductive rubber wheel 411 rotates, the conductive bevel gear 412 can be driven to rotate, so that the conductive bevel gear 412 cooperates with the rotating bevel gear 413 to drive the stirring shaft 408 to rotate;

[0070] Regardless of whether the push screw 205 rotates forward or reversely, the stirring shaft 408 can be rotated to improve the heating uniformity of the polymer solution in the liquid storage barrel 402 during the heating process.

[0071] The specific structure of the diversion pipe is as follows Figure 7 and Figure 8 As shown, the liquid supply pump 505 and the heating sleeve 506 are both installed in the main pipeline of the liquid supply pipe 501, and the main body of the liquid supply pump 505 is fixedly installed on the top surface of the bottom connecting plate 401, and the main body of the heating sleeve 506 is fixedly installed on the side of the push seat 207. After the liquid supply pipe 501 is connected to the return pipe 504 at the second interface 607 and the third interface 608, the solution in the liquid storage barrel 402 can be extracted by the liquid supply pump 505 and heated by the heating sleeve 506, and then returned to the inner cavity of the liquid storage barrel 402, so as to form a cyclic heating of the polymer solution stored in the liquid storage barrel 402;

[0072] The purpose of setting up the liquid supply pump 505 is that during the process of the liquid storage barrel 402 replenishing the polymer solution into the injection barrel 301, when the negative pressure extraction force formed by the rubber head 309 itself is insufficient, the liquid supply pump 505 can be started synchronously to enhance the pressure and efficiency of the solution in the liquid storage barrel 402 flowing into the injection barrel 301.

[0073] The specific structure of the push valve is as follows Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, one end of the push valve core 601 is covered with a fixed array of switching sealing rings 609, and the switching sealing rings 609 are alternately distributed with the first interface 606, the second interface 607 and the third interface 608 in sequence. The push valve core 601 is sealed and slidably inserted in the liquid dispensing tube 502 through the switching sealing ring 609, so that as the push valve core 601 moves horizontally, the first interface 606 and the second interface 607 are connected between the liquid supply tube 501 and the liquid supply connecting pipe 503, and the second interface 607 and the third interface 608 are connected between the return pipe 504 and the liquid supply pipe 501;

[0074] One end of the liquid supply connecting tube 610 is connected to the liquid passing tube 311, and the other end is connected to the liquid supply connecting tube 503, and the liquid supply connecting tube 610 is also made of soft material;

[0075] Inlet sealing sleeves 614 are provided on both sides of the valve cylinder liquid inlet 612, and outlet sealing sleeves 615 are provided on both sides of the valve cylinder liquid outlet 613, and the inlet sealing sleeves 614 and the outlet sealing sleeves 615 are both sleeved and fixed on the outside of the inner valve cylinder 611, and the inner valve cylinder 611 is slidably inserted into the inner liquid hole 310 through the inlet sealing sleeves 614 and the outlet sealing sleeves 615 in a sealed manner;

[0076] And when the valve barrel liquid inlet 612 is connected to the liquid passage pipe 311, the solution entering through the liquid passage pipe 311 can only enter the valve barrel liquid inlet 612;

[0077] Furthermore, after the valve cylinder liquid outlet 613 is recovered to the inner liquid hole 310, the outlet sealing sleeve 615 can form a sealing effect on the inner liquid hole 310, so that when the rubber head 309 is in a pressurized working state, the inner valve cylinder 611 and the valve cylinder liquid outlet 613 will not have any adverse effects;

[0078] The side wall of the end of the push rod 304 is symmetrically provided with a side notch 602, and the outside of the push valve core 601 is symmetrically fixed with a switching screw slide 603, and the switching screw slide 603 on the same side is slidably connected in the side notch 602, and the outer side of the end of the push rod 304 is also symmetrically fixed with a switching screw outer seat 604 and a switching screw inner seat 605, and the switching screw outer seat 604 and the switching screw inner seat 605 on the same side are directly opposite to each other, one end of the switching screw 616 is rotationally connected to the switching screw outer seat 604, and the other end is rotationally connected to the switching screw inner seat 605, and the switching screw slide 603 on the same side is cooperatively connected to the switching screw 616;

[0079] One end of each set of switching lead screws 616 is also plugged and fixed with a lead screw gear 617, the electric cylinder 618 is fixedly installed on the side of the slide 202, the lifting plate 619 is fixedly connected to the top of the telescopic rod of the electric cylinder 618, and the lifting racks 620 are symmetrically fixedly connected to both sides of the top of the lifting plate 619, and the lifting racks 620 on the same side are meshed with the lead screw gear 617;

[0080] When the telescopic rod of the electric cylinder 618 moves to drive the lifting plate 619 and the lifting rack 620 to move up and down, the lifting rack 620 on the same side forms a coordinated transmission with the screw gear 617, so that the symmetrically distributed switching screws 616 rotate at the same time, and the coordination mode of the switching screw 616 and the switching screw slide 603 can be selected to be left-handed or right-handed. Therefore, when the two sets of switching screws 616 rotate synchronously, they can synchronously drive the push valve core 601 and the inner valve cylinder 611 to form a lateral switching movement through the coordinated transmission formed with the side slot 602.

[0081] When the push rod 304 is operating to extract the solution, the locking assembly can improve the stability of the connection between the end of the push rod 304 and the push seat 207. Fig.13 , Fig.14 and Fig.15 As shown, the outer bayonet 701 is provided in the body of the outer ferrule 305 on the lower side, and the inner bayonet 702 is provided in the body of the inner insert sleeve 306 on the lower side, and after the inner insert sleeve 306 and the outer ferrule 305 are inserted into place, the inner bayonet 702 is located opposite to the outer bayonet 701;

[0082] A clamping column 703 is vertically fixed in the middle of the main body of the lifting plate 619, and an inner elastic clamping column 704 that bounces upward is slidably inserted into the clamping column 703, and a pressure relief block 705 is fixedly installed on the bottom surface of the push valve core 601;

[0083] And when the push valve core 601 moves to the first interface 606 and the second interface 607 and the liquid supply pipe 501 is connected to the liquid supply pipe 503, that is, when the injection cylinder 301 is connected to the inner cavity of the liquid storage barrel 402, the pressure relief block 705 will move to a position directly opposite to the position of the inner bayonet 702, and as the telescopic rod of the electric cylinder 618 drives the lifting plate 619 and the lifting rack 620 to move upward, it can not only form a cooperation between the lifting rack 620 and the screw gear 617, but also drive the clamping column 703 to be inserted upward into the outer bayonet. 701 and the inner bayonet 702, and after the push valve core 601 moves to the first interface 606 and the second interface 607 and the liquid supply pipe 501 is connected to the liquid supply pipe 503, the top of the inner elastic clamping column 704 just abuts against the pressure relief block 705 on the bottom surface of the push valve core 601, so that not only the clamping column 703 is inserted into the outer bayonet 701 and the inner bayonet 702, so that the inner sleeve 306 and the outer sleeve 305 form a stable connection, but also the current position of the push valve core 601 can be safely locked, thereby improving the safety effect of the operation;

[0084] A bottom cover 706 is fixed to the bottom end of the inner hole of the clamping column 703, one end of the inner top spring 707 is clamped to the bottom end of the inner elastic clamping column 704, and the other end is clamped to the bottom cover 706, so that the inner elastic clamping column 704 can be elastically upward and has the telescopic property of being downward after being squeezed, so that the inner elastic clamping column 704 can form elastic resistance against the pressure relief block 705.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrospinning device with a liquid reservoir, comprising a base member, characterized in that: It also includes a push assembly, an injection assembly, a liquid storage assembly, a flow-dividing pipe and a push valve. The push assembly includes a push screw (205) and a push seat (207). The injection assembly includes an injection cylinder (301), a push rod (304) and an inner liquid hole (310). The liquid storage assembly includes a liquid storage barrel (402) and a stirring shaft (408). The flow-dividing pipe includes a liquid supply pipe (501) and a liquid-dividing pipe (502). The push valve includes a push valve core (601), a first interface (606), a second interface (607), a third interface (608), an inner valve cylinder (611), a valve cylinder liquid inlet (612) and a valve cylinder liquid outlet (613). The push screw (205) is screwed to the middle of the top end of the base member, the top end of the base member is slidably connected with a push seat (207), and the push seat (207) is drivingly connected to the push screw (205), the injection barrel (301) is fixed to one side of the top end of the base member, the push rod (304) is slidably inserted into the injection barrel (301), and the end of the push rod (304) is connected to one side of the push seat (207), the head end side wall of the injection barrel (301) is connected to a liquid discharge pipe (307), the inner liquid hole (310) is arranged in the inner middle part of the push rod (304), the outer side wall of the push rod (304) is connected to the liquid passing pipe (311), and the liquid storage barrel (402) is fixed to the injection barrel (301). The liquid discharging pipe (307) is arranged on the other side of the push seat (207), is connected to the liquid storage barrel (402) and can be turned on and off, the stirring shaft (408) is screwed to the inner middle part of the liquid storage barrel (402) and is drivingly connected to the conductive rubber wheel (411), the liquid discharging pipe (502) is connected to the outer wall of the liquid storage barrel (402), and the bottom inlet of the liquid discharging pipe (502) is connected to the inner cavity of the liquid storage barrel (402) through the liquid supply pipe (501), the top end of the liquid discharging pipe (502) is respectively connected to the liquid supply pipe (503) and the return pipe (504), and the return pipe (504) is connected to the inner cavity of the liquid storage barrel (402), and the liquid supply pipe (503) is connected to the inner cavity of the liquid storage barrel (402). The liquid passage pipe (311) is connected, the push valve core (601) is fixedly connected to the inner valve cylinder (611), the push valve core (601) is slidably inserted into the liquid separation pipe (502), the inner valve cylinder (611) is slidably inserted into the inner liquid passage hole (310), the first interface (606), the second interface (607) and the third interface (608) are all provided at one end of the push valve core (601), and the first interface (606) is connected to the second interface (607), the third interface (608) is connected to the first interface (606) and the second interface (607), the valve cylinder liquid inlet (612) and the valve cylinder liquid outlet (613) are both provided at the cylinder of the inner valve cylinder (611). When the valve core (601) is pushed and moved to a position where the first interface (606) and the second interface (607) are connected between the liquid supply pipe (501) and the liquid supply connecting pipe (503), the valve cylinder liquid inlet (612) is connected to the liquid flow pipe (311), and the valve cylinder liquid outlet (613) extends beyond the head end of the push rod (304). When the valve core (601) is pushed and moved to a position where the second interface (607) and the third interface (608) are connected between the liquid supply pipe (501) and the return pipe (504), the valve cylinder liquid inlet (612) is disconnected from the liquid flow pipe (311), and the valve cylinder liquid outlet (613) is recovered into the inner liquid flow hole (310).

2. The electrospinning device with a liquid reservoir according to claim 1, characterized in that: The base component comprises a base (101) and a jacket (102); the jacket (102) is fixedly connected to one side of the top end of the base (101); and the injection cylinder (301) is fixedly connected to the jacket (102).

3. The electrospinning device with a liquid reservoir according to claim 2, characterized in that: The push assembly also includes a slide rod (201), a slide seat (202) and a servo motor (204); the slide rod (201) is symmetrically fixed to the top of the base (101); both ends of the slide seat (202) are respectively slidably connected to the slide rod (201); a push seat (207) is fixed to the middle of the top of the slide seat (202); a lead screw inner rotating seat (203) is fixed to the middle of one side vertical surface of the base (101); the servo motor (204) is installed and fixed to the middle of the other side of the base (101); one end of the push screw (205) is rotatably connected to the lead screw inner rotating seat (203), and the other end is fixedly connected to the rotating shaft of the servo motor (204); a lead screw slider (206) is fixed to the middle of the bottom end of the slide seat (202); and the lead screw slider (206) is cooperatively connected to the push screw (205).

4. The electrospinning device with a liquid reservoir according to claim 3, characterized in that: The injection assembly also includes a liquid outlet pipe (302), a liquid outlet valve (303) and an outer ferrule (305). The liquid outlet pipe (302) is connected to the middle of the head end of the injection barrel (301), the liquid outlet valve (303) is installed in the liquid outlet pipe (302), and a liquid discharge valve (308) is installed in the liquid discharge pipe (307). The end of the push rod (304) is symmetrically fixed with an inner sleeve (306), and the head end is fixed with a rubber head (309); the outer surface of the rubber head (309) is slidably connected with the inner cavity of the injection barrel (301), the outer ferrule (305) is symmetrically fixed to one side of the top end of the push seat (207), the outer surface of the inner sleeve (306) is plugged and installed with the inner surface of the outer ferrule (305), and the inner liquid hole (310) is opened in the middle of the push rod (304) and the rubber head (309).

5. An electrospinning device with a liquid reservoir according to claim 3 or 4, characterized in that: The liquid storage assembly further comprises a bottom connecting plate (401), a top cover (404) and a rotating bevel gear (413). The bottom connecting plate (401) is fixed to the other side of the top of the slide seat (202). The liquid storage barrel (402) is fixed to the top surface of the bottom connecting plate (401). The top of the liquid storage barrel (402) is connected to a liquid adding port (403) and a liquid return pipe (405). The top cover (404) is connected to the top of the liquid adding port (403). A liquid return connecting pipe (406) is connected between the liquid return pipe (405) and the liquid discharge pipe (307). A bottom rotating seat (406) is fixedly mounted in the middle of the bottom end of the liquid storage barrel (402). 7), the bottom shaft end of the stirring shaft (408) is rotatably connected to the bottom rotating seat (407), the bottom surface of the bottom connecting plate (401) is symmetrically fixed with a bottom shaft seat (409), the bottom shaft seat (409) is rotatably connected with a bottom rotating shaft (410), a conductive rubber wheel (411) is inserted and fixed in the bottom rotating shaft (410), the conductive rubber wheel (411) is in flexible contact with the outside of the push screw (205), a conductive bevel gear (412) is inserted and fixed in the bottom rotating shaft (410), and a rotating bevel gear (413) is fixed to the bottom end of the stirring shaft (408) and meshes with the conductive bevel gear (412).

6. An electrospinning device with a liquid reservoir according to claim 1, 2 or 3, characterized in that: The flow-dividing pipe also includes a liquid supply pump (505) and a heating sleeve (506). The liquid supply pump (505) and the heating sleeve (506) are both installed in the main pipe of the liquid supply pipe (501).

7. An electrospinning device with a liquid reservoir according to claim 1, 2 or 3, characterized in that: The push valve component also includes a liquid supply connecting pipe (610), one end of the push valve core (601) is covered with a fixed switching sealing ring (609), and the switching sealing ring (609) is alternately distributed with the first interface (606), the second interface (607) and the third interface (608) in sequence, the push valve core (601) is sealed and slidably inserted into the liquid dispensing pipe (502) through the switching sealing ring (609), and one end of the liquid supply connecting pipe (610) is connected to the liquid passing pipe (311). , the other end is connected to the liquid supply pipe (503), inlet sealing sleeves (614) are provided on both sides of the valve cylinder liquid inlet (612), outlet sealing sleeves (615) are provided on both sides of the valve cylinder liquid outlet (613), and the inlet sealing sleeve (614) and the outlet sealing sleeve (615) are both sleeved and fixed on the outside of the inner valve cylinder (611), and the inner valve cylinder (611) is slidably inserted into the inner liquid hole (310) through the inlet sealing sleeve (614) and the outlet sealing sleeve (615) in a sealed manner.

8. The electrospinning device with a liquid reservoir according to claim 4, characterized in that: The push valve member further comprises a switching lead screw (616), an electric cylinder (618), a lifting plate (619) and a lifting rack (620); the side wall of the end of the push rod (304) is symmetrically provided with a side notch (602); a switching lead screw slide seat (603) is symmetrically fixed on the outside of the push valve core (601); the switching lead screw slide seat (603) on the same side is slidably connected in the side notch (602); a switching lead screw outer seat (604) and a switching lead screw inner seat (605) are symmetrically fixedly installed on the outer side of the end of the push rod (304); the switching lead screw outer seat (604) and the switching lead screw inner seat (605) on the same side are positioned opposite to each other; the switching lead screw ( One end of the switching lead screw (616) is rotationally connected to the switching lead screw outer seat (604), and the other end is rotationally connected to the switching lead screw inner seat (605). The switching lead screw slide (603) on the same side is matched and connected to the switching lead screw (616). One end of each set of switching lead screws (616) is also plugged and fixed with a lead screw gear (617). The electric cylinder (618) is fixedly installed on the side of the slide (202). The lifting plate (619) is fixedly connected to the top of the telescopic rod of the electric cylinder (618). The lifting rack (620) is symmetrically fixedly connected to both sides of the top of the lifting plate (619), and the lifting rack (620) on the same side is meshed with the lead screw gear (617).

9. The electrospinning device with a liquid reservoir according to claim 8, characterized in that: A locking assembly is also provided between the outer clamping sleeve (305) and the inner insert sleeve (306), and the locking assembly includes an outer clamping mouth (701), an inner clamping mouth (702), a pressure relief block (705) and an inner top spring (707). The outer clamping mouth (701) is provided in a group of outer clamping sleeve (305) bodies on the lower side, and the inner clamping mouth (702) is provided in a group of inner insert sleeve (306) bodies on the lower side. A clamping column (703) is fixed in the middle of the body of the lifting plate (619), and an inner elastic clamping column (704) that bounces upward is slidably inserted in the clamping column (703). The pressure relief block (705) is fixedly installed on the bottom surface of the push valve core (601), and a bottom cover (706) is fixed at the bottom end of the inner hole of the clamping column (703). One end of the inner top spring (707) is clamped to the bottom end of the inner elastic clamping column (704), and the other end is clamped to the bottom cover (706).

Images