Spray head assembly

Abstract

The utility model discloses a nozzle assembly which comprises a base, a liquid supply cavity is arranged on the inner side of the base, a plurality of nozzles communicated with the liquid supply cavity are arranged on the upper side of the base, a liquid receiving tank is further arranged on the upper side of the base, the nozzles are arranged on the inner side of the liquid receiving tank, and the liquid receiving tank can collect solution flowing downwards from the nozzles. In the working process, a solution enters the solution supply cavity of the base and is supplied to the multiple sprayers to be sprayed out, the solution receiving groove is formed in the upper side of the base, the sprayers are arranged on the inner side of the solution receiving groove, and when the solution on the sprayers flows downwards, the solution receiving groove can collect the flowing-down solution, so that the flowing-out solution is stored in the solution receiving groove and cannot flow to other equipment structures; and the normal work of equipment is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic spinning, in particular to a nozzle assembly. Background Art

[0002] Electrospinning refers to the process of spraying a polymer solution through a nozzle, and the solution forms fiber filaments or fine mist under the action of an electric field and is deposited into a product. One of the spinning methods is upward spinning, that is, the nozzle sprays the solution upward to form fiber filaments or fine mist and is deposited upward. However, when the upward spinning method is used, when the solution sprayed from the nozzle has not completely formed fiber filaments or fine mist, part of the solution will flow down along the nozzle. After working for a period of time, the nozzle component will be sticky with a lot of solution, and even the solution will flow to other structures, affecting the operation of the electrospinning equipment.

[0003] In addition, when the machine is shut down, the solution on the nozzle will easily solidify in the air and clog the nozzle, which will take a certain amount of time to clean the blockage on the nozzle when the machine is restarted, thus reducing production efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a nozzle assembly, aiming to solve the technical problem that in the prior art upward spinning method, the solution on the nozzle flows downward and affects the operation of the equipment.

[0005] To achieve the above-mentioned purpose, the utility model proposes a nozzle assembly, including a base, a liquid supply cavity is provided on the inner side of the base, a plurality of nozzles connected with the liquid supply cavity are provided on the upper side of the base, a liquid receiving groove is also provided on the upper side of the base, the nozzle is arranged on the inner side of the liquid receiving groove, and the liquid receiving groove can collect the solution flowing downward from the nozzle.

[0006] During operation, the solution enters the liquid supply cavity of the base and is supplied to multiple nozzles for spraying. In this solution, a liquid receiving tank is arranged on the upper side of the base, and the nozzles are located on the inner side of the liquid receiving tank. When the solution on the nozzles flows downward, the liquid receiving tank can collect the flowing solution, so that the flowing solution is stored in the liquid receiving tank and will not flow to other equipment structures, thereby not affecting the normal operation of the equipment.

[0007] Preferably, an annular surrounding plate is fixedly provided on the upper side of the liquid receiving trough, and the inner side of the surrounding plate forms the liquid receiving trough.

[0008] Preferably, the liquid receiving tank is provided with a drain pipe, which is used to discharge the solution in the liquid receiving tank. The solution in the liquid receiving tank can be discharged to another location for collecting the solution through the drain pipe to avoid excessive solution in the liquid receiving tank and facilitate cleaning of the solution in the liquid receiving tank.

[0009] Preferably, a discharge switch valve is provided on the discharge pipe, which can control the opening or closing of the discharge pipe, thereby conveniently controlling the discharge of the solution.

[0010] Preferably, the upper edge of the liquid receiving groove is lower than the upper end of the nozzle, so as to reduce the mutual interference of electric fields between adjacent nozzles and increase the electric field strength at the upper end of the nozzle.

[0011] Preferably, the nozzle assembly further comprises a liquid absorbing and wetting member, which is movably disposed on the inner side of the liquid receiving tank, and the liquid absorbing and wetting member at least partially abuts against the upper port of the nozzle, and the liquid absorbing and wetting member can absorb and buffer the solution in the liquid receiving tank to keep the upper port of the nozzle moist.

[0012] When the machine stops working, the liquid absorbing wetted component can be covered on the nozzle. The lower side of the liquid absorbing wetted component can absorb the solution in the liquid receiving tank and buffer the solution upward, so that the upper port of the nozzle remains moistened, thereby avoiding or reducing the solution solidification and blockage at the nozzle after a long period of shutdown. When the machine is started again, the liquid absorbing wetted component is removed from the nozzle. There is no need to clean the blockage or it only takes a short time to clean it, which can improve production efficiency.

[0013] Preferably, the liquid receiving tank is provided with a liquid inlet pipe, the liquid inlet pipe is used to add solution into the liquid receiving tank, and the liquid inlet pipe is provided with a liquid inlet switch valve.

[0014] Preferably, a lifting drive device is provided on the base, and the moving end of the lifting drive device is transmission-connected with the liquid-absorbing and wetting component. The upper side of the nozzle is a needle, and the lifting drive device can drive the liquid-absorbing and wetting component to move upward to wrap and wet the upper end of the needle or move downward to allow the upper end of the needle to puncture and protrude from the liquid-absorbing and wetting component.

[0015] When working, the lifting drive device drives the liquid absorbing wetting piece to a lower position, the upper end of the needle punctures and protrudes out of the liquid absorbing wetting piece, and the upper end of the needle can spray solution to work; when stopping, the lifting drive device drives the liquid absorbing wetting piece to move upward, and the liquid absorbing wetting piece can wrap the upper end of the wetting needle to realize the automatic movement of the liquid absorbing wetting piece without manual placement.

[0016] Preferably, the liquid-absorbing wettable member is a sponge.

[0017] Preferably, a liquid level detection element is provided in the liquid receiving tank, and the liquid level detection element is used to detect the height of the liquid surface in the liquid receiving tank, so as to facilitate understanding and controlling the height of the solution in the liquid receiving tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model 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 only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0020] Figure 2 This is a structural schematic diagram of the second embodiment of the present utility model when the liquid absorbing and wetting element is not placed in the liquid receiving tank;

[0021] Figure 3 This is a schematic diagram of the structure of the second embodiment of the utility model, when the liquid absorbing and wetting member is placed in the liquid receiving tank and wraps the wetting nozzle;

[0022] Figure 4 This is a structural schematic diagram of the third embodiment of the present utility model, when the liquid absorbing and wetting member moves downward in the liquid receiving groove and the needle protrudes out of the liquid absorbing and wetting member;

[0023] Figure 5 This is a structural schematic diagram of the third embodiment of the present utility model, when the liquid absorbing wetting member moves upward in the liquid receiving groove and the liquid absorbing wetting member wraps the wetting needle.

[0024] In the accompanying drawings: 1-base, 11-liquid supply chamber, 2-nozzle, 21-needle, 3-liquid receiving tank, 31-liquid discharge pipe, 311-liquid discharge switch valve, 32-liquid inlet pipe, 321-liquid inlet switch valve, 33-enclosure, 4-liquid absorption wetting part, 5-lifting drive device, 51-connecting part, 6-liquid level detection element.

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0027] It should be noted that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of technical personnel in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0029] Embodiment 1:

[0030] like Figure 1 As shown, a nozzle assembly includes a base 1, a liquid supply cavity 11 is provided on the inner side of the base 1, a plurality of nozzles 2 connected with the liquid supply cavity 11 are provided on the upper side of the base 1, a liquid receiving groove 3 is also provided on the upper side of the base 1, the nozzle 2 is provided on the inner side of the liquid receiving groove 3, and the liquid receiving groove 3 can collect the solution flowing downward from the nozzle 2.

[0031] During operation, the solution enters the liquid supply cavity 11 of the base 1 and supplies the solution to the multiple nozzles 2 for spraying. In this embodiment, a liquid receiving tank 3 is arranged on the upper side of the base 1, and the nozzles 2 are located inside the liquid receiving tank 3. When the solution on the nozzles 2 flows downward, the liquid receiving tank 3 can collect the flowing solution, so that the flowing solution is stored in the liquid receiving tank 3 and does not flow to other equipment structures, thus not affecting the normal operation of the equipment. It should be noted that the liquid level in the liquid receiving tank 3 should be kept lower than the upper port of the nozzle 2 during operation, otherwise the nozzle 2 cannot spray liquid.

[0032] In some specific embodiments, a ring-shaped enclosure 33 is fixedly provided on the upper side of the liquid receiving tank 3, and the inner side of the enclosure 33 forms the liquid receiving tank 3, which facilitates the processing of the liquid receiving tank 3. In other embodiments, the liquid receiving tank 3 can also be formed by processing a groove in the middle of the upper side of the base 1 to form the liquid receiving tank 3.

[0033] In some specific embodiments, the liquid receiving tank 3 is provided with a drain pipe 31, which is used to discharge the solution in the liquid receiving tank 3. The solution in the liquid receiving tank 3 can be discharged to another location for collecting the solution through the drain pipe 31, so as to avoid excessive solution in the liquid receiving tank 3 and facilitate cleaning of the solution in the liquid receiving tank 3.

[0034] Further, a discharge switch valve 311 is provided on the discharge pipe 31. The discharge switch valve 311 can control the opening or closing of the discharge pipe 31, so as to conveniently control the discharge of the solution. The discharge switch valve 311 can be a manual valve, which is closed during operation and opened to discharge the solution during shutdown. The discharge switch valve 311 can also be an electric valve, which is automatically or manually controlled to open or close according to the working conditions.

[0035] In some specific embodiments, the upper edge of the liquid receiving tank 3 is lower than the upper end of the nozzle 2. This can reduce the mutual interference of the electric fields between adjacent nozzles 2 and increase the electric field strength at the upper end of the nozzle 2. In other embodiments, the upper edge of the liquid receiving tank 3 can also be higher than the upper end of the nozzle 2.

[0036] Embodiment 2:

[0037] Reference Figure 2 and Figure 3 On the basis of the first embodiment, the nozzle assembly further includes a liquid absorbing and wetting member 4, which is movably arranged on the inner side of the liquid receiving tank 3, and the liquid absorbing and wetting member 4 at least partially abuts against the upper port of the nozzle 2. The liquid absorbing and wetting member 4 can absorb and buffer the solution in the liquid receiving tank 3 to keep the upper port of the nozzle 2 moist.

[0038] The liquid absorbing and wetting member 4 has good water absorption and can be a porous material, such as a sponge. When the machine stops working, the liquid absorbing and wetting member 4 can be covered on the nozzle 2. The lower side of the liquid absorbing and wetting member 4 in the liquid receiving tank 3 can absorb the solution in the liquid receiving tank 3 and buffer the solution upward, so that the upper port of the nozzle 2 is kept moist, avoiding or reducing the solution solidification and blockage at the nozzle 2 after a long shutdown. When the machine is restarted, the liquid absorbing and wetting member 4 is removed from the nozzle 2, and the blockage does not need to be cleaned or only needs to be cleaned for a short time, which can improve production efficiency.

[0039] In this embodiment, the liquid absorbing wetted component 4 is manually placed and taken in. When working, the liquid absorbing wetted component 4 is not on the upper side of the nozzle 2, and the liquid absorbing wetted component 4 does not affect the operation of the nozzle 2. When the machine is stopped, the liquid absorbing wetted component 4 can be manually placed in the liquid receiving tank 3 and on the nozzle 2.

[0040] Furthermore, the liquid receiving tank 3 is provided with a liquid inlet pipe 32, which is used to add solution into the liquid receiving tank 3, and a liquid inlet switch valve 321 is provided on the liquid inlet pipe 32. The liquid inlet switch valve 321 is closed during normal operation. When the liquid level in the liquid receiving tank 3 is not high during shutdown, the liquid inlet switch valve 321 can be opened to input the solution into the liquid receiving tank 3 through the liquid inlet pipe 32, so that the liquid level of the solution reaches a height that can be absorbed by the liquid absorbing wetted member 4. When the machine is turned on again, the solution can be discharged through the liquid discharge pipe 31, so that the liquid receiving tank 3 can accommodate the solution during operation. In other embodiments, the liquid inlet pipe 32 may not be provided, and the solution can be poured into the liquid receiving tank 3 from the upper side by artificial liquid addition.

[0041] Furthermore, a liquid level detection element 6 is provided in the liquid receiving tank 3, and the liquid level detection element 6 is used to detect the liquid level in the liquid receiving tank 3, so as to understand and control the height of the solution in the liquid receiving tank 3. The liquid level detection element 6 can be connected to the discharge switch valve 311 and the liquid inlet switch valve 321 by signal, and automatically control the opening or closing of the discharge switch valve 311 and the liquid inlet switch valve 321.

[0042] Embodiment three:

[0043] Reference Figure 4 and Figure 5 On the basis of the second embodiment, the liquid absorbing wetted member 4 in the third embodiment is automatically moved, and a lifting drive device 5 is provided on the base 1. The moving end of the lifting drive device 5 is transmission-connected with the liquid absorbing wetted member 4. The upper side of the nozzle 2 is the needle 21. The lifting drive device 5 can drive the liquid absorbing wetted member 4 to move upward to wrap the upper end of the wetted needle 21 or move downward to make the upper end of the needle 21 pierce and protrude from the liquid absorbing wetted member 4.

[0044] When working, the lifting drive device 5 drives the liquid absorbing and wetting member 4 to be in a lower position, the upper end of the needle 21 punctures and protrudes from the liquid absorbing and wetting member 4, the liquid absorbing and wetting member 4 is compressible and can be compressed, and the upper end of the needle 21 can spray the solution to work; when stopped, the lifting drive device 5 drives the liquid absorbing and wetting member 4 to move upward, the liquid absorbing and wetting member 4 can wrap the upper end of the wetting needle 21, and the lower side of the liquid absorbing and wetting member 4 still absorbs the solution in the liquid receiving tank 3, so that the liquid absorbing and wetting member 4 can be automatically moved without manual placement. The lifting drive device 5 can use a cylinder, which is located outside the liquid receiving tank 3, and the piston rod of the cylinder is fixedly connected to the liquid absorbing and wetting member 4 through a connecting member 51.

[0045] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A nozzle assembly, characterized in that: The invention comprises a base (1), wherein a liquid supply cavity (11) is provided on the inner side of the base (1), and a plurality of nozzles (2) connected to the liquid supply cavity (11) are provided on the upper side of the base (1). A liquid receiving groove (3) is also provided on the upper side of the base (1), and the nozzles (2) are arranged on the inner side of the liquid receiving groove (3). The liquid receiving groove (3) can collect the solution flowing downward from the nozzles (2).

2. The nozzle assembly according to claim 1, characterized in that: An annular surrounding plate (33) is fixedly provided on the upper side of the liquid receiving trough (3), and the inner side of the surrounding plate (33) forms the liquid receiving trough (3).

3. The nozzle assembly according to claim 1, characterized in that: The liquid receiving tank (3) is provided with a liquid discharge pipe (31), and the liquid discharge pipe (31) is used to discharge the solution in the liquid receiving tank (3).

4. The nozzle assembly according to claim 3, characterized in that: The liquid discharge pipe (31) is provided with a liquid discharge switch valve (311).

5. The nozzle assembly according to claim 1, characterized in that: The upper edge of the liquid receiving groove (3) is lower than the upper end of the spray head (2).

6. The nozzle assembly according to claim 1, characterized in that: The nozzle assembly further comprises a liquid absorbing and wetting member (4), which is movably arranged on the inner side of the liquid receiving groove (3), and the liquid absorbing and wetting member (4) at least partially abuts against the upper port of the nozzle (2). The liquid absorbing and wetting member (4) can absorb and buffer the solution in the liquid receiving groove (3) so that the upper port of the nozzle (2) remains moist.

7. The nozzle assembly according to claim 6, characterized in that: The liquid receiving tank (3) is provided with a liquid inlet pipe (32), and the liquid inlet pipe (32) is used to add solution into the liquid receiving tank (3). The liquid inlet pipe (32) is provided with a liquid inlet switch valve (321).

8. The nozzle assembly according to claim 6, characterized in that: The base (1) is provided with a lifting drive device (5), the moving end of the lifting drive device (5) is in driving connection with the liquid absorbing and wetting member (4), the upper side of the nozzle (2) is a needle (21), and the lifting drive device (5) can drive the liquid absorbing and wetting member (4) to move upwards to wrap and wet the upper end of the needle (21) or to move downwards to allow the upper end of the needle (21) to pierce and protrude from the liquid absorbing and wetting member (4).

9. The nozzle assembly according to claim 6, characterized in that: The liquid absorbing and wetting member (4) is a sponge.

10. The spray head assembly according to claim 1, wherein: A liquid level detection element (6) is provided in the liquid receiving tank (3), and the liquid level detection element (6) is used to detect the height of the liquid level in the liquid receiving tank (3).

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