Desktop type coaxial electrostatic spinning instrument with double liquid supply systems

Abstract

The utility model relates to the technical field of electrostatic spinning, in particular to a desktop type coaxial electrostatic spinning instrument with double liquid supply systems, which solves the problem that the distance between a spinning needle head and a roller of an electrostatic spinning machine in the prior art is inconvenient to adjust. The spinning nozzle corresponds to the roller receiving assembly in position, a moving block used for driving the spinning nozzle to do reciprocating motion is movably arranged in the main machine box body, a supporting rod is connected to the moving block in a sliding mode, the spinning nozzle is arranged on the supporting rod, and a limiting mechanism is arranged between the supporting rod and the moving block; the moving block is provided with scale marks used for determining the distance between the supporting rod and the roller receiving assembly. The device has the beneficial effects that the scale marks are arranged, so that an operator can rapidly determine the distance between the spinning nozzle and the roller receiving assembly, rapid adjustment of the supporting rod can be conveniently achieved, the adjustment process is simplified, and the accuracy of distance adjustment is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrospinning technical field, especially table type double liquid supply system coaxial electrospinning instrument. BACKGROUND

[0002] Electrospinning technology uses high-voltage electric field to precisely stretch and solidify polymer solutions or melts, producing nanofibers with unique physical and chemical properties. These nanofibers have great application potential in medical, filtration, clothing, and other fields due to their high specific surface area, high porosity, and excellent mechanical properties. Their applications in the medical field include scaffolds for tissue engineering, drug delivery systems, and wound dressings; in the filtration field, they are used to manufacture high-efficiency air and water filters; and in the clothing field, they are used to develop new high-performance fabrics. At the same time, due to its simplicity and ease of operation, electrospinning technology has been widely used in experimental teaching and applied research.

[0003] The patent with publication number CN217499512U discloses a portable electrospinning machine for laboratory, which comprises a main body case and an external control system. The main body case is composed of a lead screw sliding device, an extension arm, a spinning needle, a temperature and humidity controller, and a drum receiving device. The external control mechanism is composed of a high-voltage power supply, a micro-injection device, an air pump, and a motor control system. The front part of the main body case is composed of a glass door, and the inner and outer surfaces of the glass door have an anti-fog easy-to-clean inorganic coating. The spinning needle is connected with the air pump, which can generate rapid airflow to keep the needle unblocked when it is blocked. The drum receiving device is modularly assembled and has the performance of simple and detachable, meeting the requirement of easy cleaning. The extension arm and the support frame of the drum receiving device are composed of lightweight engineering plastics.

[0004] The above-mentioned electrospinning machine needs to use a ruler to adjust the distance between the spinning needle on the extension arm and the drum, which is complicated and not conducive to the operation of the electrospinning machine. Moreover, the use of external ruler for distance measurement may lead to inaccurate measurement, affecting the accuracy of the test. UTILITY MODEL CONTENTS

[0005] The utility model discloses a table type double liquid supply system coaxial electrospinning instrument, which solves the problem of inconvenient adjustment of the distance between the spinning needle and the drum of the electrospinning machine in the prior art.

[0006] The technical solution of the utility model is as follows:

[0007] The application discloses a desktop coaxial electrostatic spinning instrument with a double-liquid supply system, which comprises a main box body, a drum receiving assembly and a spinning nozzle arranged in the main box body, the spinning nozzle is in position correspondence with the drum receiving assembly, a moving block for driving the spinning nozzle to make reciprocating motion is movably arranged in the main box body, a supporting rod is slidably connected to the moving block, the spinning nozzle is arranged on the supporting rod, and a limiting mechanism is arranged between the supporting rod and the moving block; and a scale line for determining the distance between the supporting rod and the drum receiving assembly is arranged on the moving block. During the preparation process before the use of the spinning instrument, the distance between the spinning nozzle on the supporting rod and the drum receiving assembly can be adjusted by adjusting the relative position of the supporting rod on the moving block, and the supporting rod is fixed by the limiting mechanism after the position adjustment, so that the stability of the supporting rod during the movement of the moving block is ensured, and the stability of the movement of the spinning nozzle is ensured; in addition, the setting of the scale line enables the operator to quickly determine the distance between the spinning nozzle and the drum receiving assembly, the quick adjustment of the supporting rod is facilitated, the adjustment process is simplified, and the accuracy of the distance adjustment is ensured.

[0008] A sliding groove is arranged in the moving block, a sliding block is arranged on the supporting rod, and the sliding block is slidably connected with the sliding groove. The direction of the sliding groove is perpendicular to the arrangement of the drum receiving assembly.

[0009] The limiting mechanism comprises an anti-skid surface arranged at the opening position of the sliding block and a pressing block arranged in the sliding groove, a spring is arranged between the pressing block and the bottom of the sliding groove, and the pressing block and the anti-skid surface clamp the sliding block. During the position adjustment of the supporting rod, the operator pushes the supporting rod longitudinally, so that the supporting rod compresses the spring through the pressing block, the sliding block on the supporting rod is separated from the anti-skid surface, at this time, the supporting rod is pushed to move forward and backward, the distance between the supporting rod and the drum receiving assembly is adjusted, after the position adjustment of the supporting rod, the supporting rod is released, the pressing block presses the sliding block downward under the action of the spring, so that the sliding block is in contact with the anti-skid surface again, at this time, the pressing block and the anti-skid surface clamp the supporting rod, and the limiting and fixing of the supporting rod are realized.

[0010] A reciprocating motion mechanism is arranged on the inner top wall of the main box body, and the moving block is arranged on the reciprocating motion mechanism. The reciprocating motion mechanism comprises parallel arranged lead screws and guide rods, a servo motor is connected to the end of the lead screw, the moving block is slidably connected with the guide rod, and the moving block is threadedly connected with the lead screw.

[0011] Two propelling assemblies are arranged on the outer portion of the main box body, a spinning liquid propeller is detachably arranged on the propelling assembly, the spinning nozzle is a coaxial needle head, and the spinning liquid propeller is in communication with two inlets of the spinning nozzle. Two different spinning solutions are simultaneously introduced into the spinning nozzle through the double propelling assemblies, and are stably output through the coaxial needle head, so that the nanometer fiber preparation of a multi-material composite structure is realized.

[0012] The inner connecting pipe is connected with the spinning nozzle, the end of the inner connecting pipe is connected with a joint, the joint is detachably connected with the side wall of the main machine box, the joint extends out of the main machine box, the spinning liquid propeller is connected with an outer connecting pipe, and the outer connecting pipe is connected with the joint.

[0013] The propelling assembly comprises a propelling base, a guide rail screw mechanism arranged on the propelling base, an installation plate arranged at the end of the guide rail screw mechanism, a movable plate connected with the guide rail screw mechanism, and a spinning liquid propeller detachably arranged on the installation plate and matched with the tail end of the movable plate.

[0014] The front surface of the main machine box is provided with a first window, the side surface of the main machine box is provided with a second window, and the first window and the second window are both provided with transparent baffles.

[0015] The drum receiving assembly comprises a base arranged in the main machine box, a drum rotatably connected with the base, and a driving motor arranged on the base and used for driving the drum to rotate.

[0016] The main machine box comprises an outer metal layer and an inner tetrafluoroethylene layer.

[0017] The utility model discloses a spinning instrument, which comprises a main machine box, a spinning nozzle arranged on the main machine box, a spinning liquid propeller connected with the spinning nozzle, a drum receiving assembly arranged on the main machine box and matched with the spinning nozzle, and a supporting rod arranged between the spinning nozzle and the drum receiving assembly.

[0018] The double propulsion assembly is used to simultaneously introduce two different mode solutions into the spinning nozzle, and the coaxial needle is used to stably output, so that the preparation of the nano-fiber with the multi-material composite structure is realized.

[0019] The main box body is a closed structure, effectively reducing the influence of solvent volatilization on the environment and the health of the operator; meanwhile, the main box body is provided with an internal tetrafluoroethylene layer, the tetrafluoroethylene layer has good insulation performance, reduces the risk of electric shock, prevents external electromagnetic interference, and ensures the stability of the electric field. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0021] Figure 1 It is a structural schematic diagram of the desktop type double-liquid supply system coaxial electrospinning instrument of the present application.

[0022] Figure 2 It is a sectional view of the main box body.

[0023] Figure 3 It is a sectional view of the moving block.

[0024] In the figure: 1, main box body, 11, first window, 12, second window, 13, joint, 2, drum receiving assembly, 21, base, 22, drum, 3, controller, 4, propulsion assembly, 5, spinning solution propeller, 51, outer connecting pipe, 6, support rod, 7, spinning nozzle, 71, inner connecting pipe, 8, reciprocating mechanism, 9, moving block, 91, sliding groove, 92, spring, 93, pressing block, 94, anti-skid surface. DETAILED DESCRIPTION

[0025] The technical schemes in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application, and obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Embodiment 1, as Figure 1 , Figure 2As shown, the desktop double-liquid supply system coaxial electrostatic spinning instrument includes a main box body 1, the main box body 1 is provided with a drum receiving assembly 2 and a spinning nozzle 7, the spinning nozzle 7 corresponds to the position of the drum receiving assembly 2, the main box body 1 is movably provided with a moving block 9 for driving the spinning nozzle 7 to reciprocate, the moving block 9 is slidably connected with a support rod 6, the spinning nozzle 7 is arranged on the support rod 6, and a limiting mechanism is arranged between the support rod 6 and the moving block 9; the moving block 9 is provided with a scale line for determining the distance between the support rod 6 and the drum receiving assembly 2. During the preparation process before the use of the spinning instrument, the distance between the spinning nozzle 7 on the support rod 6 and the drum receiving assembly 2 can be adjusted by adjusting the relative position of the support rod 6 on the moving block 9, and after the position adjustment, the support rod 6 is fixed by the limiting mechanism, so that the support rod 6 remains stable during the movement of the moving block 9, thereby ensuring the stable movement of the spinning nozzle 7; in addition, the setting of the scale line can enable the operator to quickly determine the distance between the spinning nozzle 7 and the drum receiving assembly 2, facilitate the quick adjustment of the support rod 6, simplify the adjustment process, and ensure the accuracy of the distance adjustment.

[0027] Specifically, the moving direction of the moving block 9 is parallel to the axis direction of the drum receiving assembly 2, and the moving direction of the support rod 6 is perpendicular to the axis direction of the drum receiving assembly 2. Before the use of the spinning instrument, the moving block 9 is fixed, the position of the support rod 6 on the moving block 9 is adjusted, and the distance between the spinning nozzle 7 and the drum receiving assembly 2 is adjusted; in addition, the main box body 1 is provided with a high-voltage generator, during the use of the spinning instrument, the voltage clamps of the high-voltage generator are connected with the spinning nozzle 7 and the drum receiving assembly 2 respectively, the relative position of the support rod 6 and the moving block 9 is unchanged, the moving block 9 reciprocates in the main box body 1, and the spinning nozzle 7 sprays spinning liquid.

[0028] Further, the moving block 9 is provided with a sliding groove 91, the support rod 6 is provided with a sliding block, and the sliding block and the sliding groove 91 are in sliding cooperation. Figure 3As shown, the limiting mechanism includes anti-skid surface 94 arranged at the opening position of the sliding block 91 and pressing block 93 arranged in the sliding groove 91, and spring 92 is arranged between the pressing block 93 and the bottom of the sliding groove 91. The pressing block 93 cooperates with the anti-skid surface 94 to clamp the sliding block. When adjusting the position of the support rod 6, the operator pushes the support rod 6 longitudinally, so that the support rod 6 compresses the spring through the pressing block 93, and the sliding block on the support rod 6 is separated from the anti-skid surface 94. At this time, the support rod 6 is pushed forward and backward to adjust the distance between the support rod 6 and the drum receiving assembly 2. After adjusting the position of the support rod 6, the support rod 6 is released, and the pressing block 93 is pressed downward on the sliding block under the action of the spring 92, so that the sliding block is in contact with the anti-skid surface 94 again. At this time, the pressing block 93 cooperates with the anti-skid surface 94 to clamp the support rod 6, so as to realize the limiting and fixing of the support rod 6. In the embodiment, the anti-skid surface 94 is a slope, and the two anti-skid surfaces 94 at the opening position of the sliding groove 91 form a horn type structure, and the sliding block cooperates with the horn type structure. The horn type structure has a positioning effect, which effectively ensures the stability of the sliding block after being pressed by the pressing block 93, and further ensures the stability of the support rod 6. The anti-skid surface 94 is provided with a rubber anti-skid pad, which effectively increases the friction between the sliding block and the anti-skid surface 94, and ensures the stability of the sliding block in the sliding groove 91.

[0029] Further, the inner top wall of the main box body 1 is provided with a reciprocating mechanism 8, and a moving block 9 is arranged on the reciprocating mechanism 8. In the embodiment, the reciprocating mechanism is a guide rail and screw mechanism. Specifically, the reciprocating mechanism includes parallel arranged screw and guide rail, the end of the screw is connected with a servo motor, the moving block 9 is slidingly connected with the guide rail, and the moving block 9 is threadedly connected with the screw. The servo motor can drive the screw to rotate forward and backward, and the moving block 9 is driven to reciprocate through the thread cooperation between the moving block 9 and the screw.

[0030] In embodiment 2, on the basis of embodiment 1, the desktop type double-liquid supply system coaxial electrospinning instrument is provided, the outer part of the main box body 1 is provided with two propelling assemblies 4, the propelling assemblies 4 are detachably installed with spinning liquid propellers 5, the spinning nozzle 7 is a coaxial needle, and the spinning liquid propeller 5 is in communication with two inlets of the spinning nozzle 7. Two different spinning solutions are simultaneously introduced into the spinning nozzle 7 through the double propelling assemblies 4, and are stably output through the coaxial needle, so as to realize the preparation of nanofiber with multi-material composite structure.

[0031] Further, the spinning nozzle 7 is communicated with an inner connecting pipe 71, and an end of the inner connecting pipe 71 is connected with a connector 13 which is detachably connected to the side wall of the main machine box 1 and extends out of the main machine box 1. The spinning liquid propeller 5 is communicated with an outer connecting pipe 51 which is connected with the connector 13. In order to ensure the overall sealing of the main machine box 1, the connecting pipe between the spinning liquid propeller 5 and the spinning nozzle 7 needs to pass through the side wall of the main machine box 1. By arranging the connector 13, the connecting pipe is divided into the outer connecting pipe 51 and the inner connecting pipe 71, which facilitates the operation of the operator to pass the connecting pipe through the main machine box 1, and further ensures the overall sealing of the main machine box 1.

[0032] Further, the propelling assembly comprises a propelling seat, a guide rail screw mechanism is arranged on the propelling seat, an installation plate is arranged at an end of the guide rail screw mechanism, a movable plate is connected to the guide rail screw mechanism, the spinning liquid propeller 5 is detachably arranged on the installation plate, and a tail end of the spinning liquid propeller 5 is matched with the movable plate. A propelling motor connected with the guide rail screw mechanism is arranged on the propelling assembly, and the guide rail screw mechanism drives the movable plate to move to extrude the spinning liquid propeller 5, so that the spinning liquid in the spinning liquid propeller 5 is introduced into the spinning nozzle 7 through the connecting pipe and then sprayed out of the spinning nozzle 7. In the embodiment, the spinning liquid propeller 5 is a needle cylinder, the installation plate comprises an installation plate body and a pressing plate, a groove is arranged on the installation plate body, the needle cylinder body is placed in the groove, the pressing plate is connected with the installation plate body by bolts, and the pressing plate is pressed against the needle cylinder body after being connected with the installation plate body, so as to fix the needle cylinder. An end of a needle cylinder push rod is matched with the movable plate.

[0033] Further, a first window 11 is arranged on the front of the main machine box 1, a second window 12 is arranged on the side of the main machine box 1, and transparent baffles are arranged at positions of the first window 11 and the second window 12. The first window 11 facilitates the operator to observe the formed nanofiber wire on the drum receiving assembly 2, and the second window 12 facilitates the operator to observe the form of the spinning liquid sprayed out of the spinning nozzle 7. In the embodiment, the transparent baffle is a teflon plate, and the transparent baffle can form a closed environment for the main machine box 1 and reduce the influence of solvent volatilization on the environment and the health of the operator.

[0034] Further, the drum receiving assembly 2 comprises a base 21 arranged in the main machine box 1, a drum 22 rotatably connected to the base 21, and a driving motor arranged on the base 21 and driving the drum 22 to rotate. A silver plating layer is arranged on the surface of the drum 22. The driving motor is a servo motor which can ensure the stable rotation of the drum, and the silver plating layer can ensure the good electrical conductivity of the drum and effectively collect the spun nanofiber to form a uniform nanofiber film.

[0035] Further, the host box 1 comprises an outer metal layer and an inner tetrafluoroethylene layer. The inner tetrafluoroethylene layer has good insulation performance, reduces the risk of electric shock, prevents external electromagnetic interference, and ensures the stability of the electric field; the outer metal layer provides necessary support and protection.

[0036] Further, the host box 1 is externally provided with a controller 3, which is connected with the drum receiving assembly 2, the propelling assembly 4 and the reciprocating mechanism 8, that is, the controller 3 can control the speed and direction of the reciprocating motion of the moving block 9 through the reciprocating mechanism 8, the controller 3 can control the rotating speed of the drum 22 through the driving motor of the drum receiving assembly 2, and the controller 3 controls the output speed of the spinning solution of the spinning solution propeller 5 through the propelling motor of the propelling assembly 4.

[0037] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A desktop coaxial electrospinning apparatus with a dual liquid supply system, comprising a main unit housing (1), wherein a roller receiving assembly (2) and a spinning nozzle (7) are provided inside the main unit housing (1), the spinning nozzle (7) being positioned corresponding to the roller receiving assembly (2), characterized in that, The main unit housing (1) is equipped with a movable block (9) for driving the spinning nozzle (7) to reciprocate. A support rod (6) is slidably connected to the movable block (9). The spinning nozzle (7) is mounted on the support rod (6). A limiting mechanism is provided between the support rod (6) and the movable block (9). The movable block (9) is equipped with scale lines for determining the distance between the support rod (6) and the roller receiving assembly (2).

2. The desktop dual-liquid supply system coaxial electrospinning apparatus according to claim 1, characterized in that, The movable block (9) is provided with a sliding groove (91), and the upper end of the support rod (6) is provided with a slider, which slides in conjunction with the sliding groove (91).

3. The desktop dual-liquid supply system coaxial electrospinning apparatus according to claim 2, characterized in that, The limiting mechanism includes an anti-slip surface (94) set at the opening of the slide groove (91) and a pressure block (93) set in the slide groove (91). A spring (92) is provided between the pressure block (93) and the bottom of the slide groove (91). The pressure block (93) and the anti-slip surface (94) cooperate to clamp the slider.

4. The desktop dual-liquid supply system coaxial electrospinning apparatus according to claim 3, characterized in that, A reciprocating motion mechanism (8) is provided on the inner top wall of the main unit housing (1), and a moving block (9) is provided on the reciprocating motion mechanism (8).

5. The desktop dual-liquid supply system coaxial electrospinning apparatus according to any one of claims 1 to 4, characterized in that, The main unit housing (1) is provided with two propulsion components (4) on the outside. A spinning liquid propulsion device (5) is detachably installed on the propulsion component (4). The spinning nozzle (7) is a coaxial needle. The spinning liquid propulsion device (5) is connected to the two inlets of the spinning nozzle (7).

6. The desktop dual-liquid supply system coaxial electrospinning apparatus according to claim 5, characterized in that, The spinning nozzle (7) is connected to an inner connecting pipe (71), and the end of the inner connecting pipe (71) is connected to a connector (13). The connector (13) is detachably connected to the main unit housing (1) and extends out of the main unit housing (1). The spinning liquid propeller (5) is connected to an outer connecting pipe (51), and the outer connecting pipe (51) is connected to the connector (13).

7. The desktop dual-liquid supply system coaxial electrospinning apparatus according to claim 6, characterized in that, The propulsion assembly includes a propulsion base, on which a guide rail screw mechanism is provided. The end of the guide rail screw mechanism is provided with a mounting plate, and a movable plate is connected to the guide rail screw mechanism. The spinning liquid propulsion device (5) is detachably mounted on the mounting plate, and the tail end of the spinning liquid propulsion device (5) cooperates with the movable plate.

8. The desktop coaxial electrospinning apparatus with dual liquid supply system according to any one of claims 1 to 4, 6, and 7, characterized in that, The front of the main unit housing (1) is provided with a first window (11), and the side of the main unit housing (1) is provided with a second window (12). Both the first window (11) and the second window (12) are provided with transparent baffles.

9. The desktop dual-liquid supply system coaxial electrospinning apparatus according to claim 8, characterized in that, The roller receiving assembly (2) includes a base (21) disposed inside the main unit housing (1), a roller (22) is rotatably connected to the base (21), and a drive motor for driving the roller (22) to rotate is provided on the base (21); the surface of the roller (22) is provided with a silver plating layer.

10. The desktop dual-liquid supply system coaxial electrospinning apparatus according to claim 1 or 9, characterized in that, The main unit enclosure (1) includes an outer metal layer and an inner tetrafluoroethylene layer.

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