CN219232893U

CN219232893U - Dispensing valve

Info

Publication number: CN219232893U
Application number: CN202223373293.7U
Authority: CN
Inventors: 廖俊
Original assignee: Shenzhen Kangzhun Technology Co ltd
Current assignee: Shenzhen Kangzhun Technology Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-06-23
Anticipated expiration: 2032-12-15

Abstract

The utility model relates to a dispensing valve, which comprises a luer female head, wherein a first cylinder body extends from the tail part of the luer female head, the first cylinder body is provided with a first through hole which is communicated with the luer female head and is coaxial with a core wire, the aperture in the middle of the first through hole is smaller than the aperture at two ends, the aperture at the lower part of the first through hole is matched with the aperture of the inner through hole at the tail end of the luer female head, a piston rod is arranged in the first through hole, the lower end of the piston rod is provided with an upper piston and a lower piston with the diameters matched with the aperture at the lower part of the first through hole, the first cylinder body extends upwards in an inclined way on the outer wall adjacent to the luer female head, the second cylinder body is provided with a second through hole which is communicated with the first through hole and is in an inverted cone structure, and a core wire with positive and negative helical blades is detachably arranged in the second through hole; the distance between the upper piston and the lower piston is larger than the aperture of the lower end of the second through hole. The utility model can accurately control the glue outlet, is convenient for connecting the glue needle head, is suitable for single-component or double-component glue dispensing, is simple and convenient, and meets different use requirements.

Description

Dispensing valve

Technical Field

The utility model relates to dispensing equipment, in particular to a dispensing valve.

Background

The dispensing is to smear, fill and drop the medium of the non-Newtonian fluid with higher viscosity such as glue, grease and the like onto a certain product, thereby playing roles of fixing, packaging, filling and the like. The glue inlet pipe of the existing glue dispensing valve is only suitable for single-component glue, the glue dispensing of the double-component glue is needed to be used by connecting a mixing pipe on the glue inlet pipe, the glue dispensing valve cannot be directly connected to a glue dispensing machine, more connecting ports exist when the mixing pipe is used, more parts are inconvenient to mount and dismount, the structure of the whole glue dispensing system is more complicated, two different glue inlet pipes are arranged on the glue dispensing valve to carry out glue inlet of different-component glue, for example, in patent CN109351552A, the glue of different components is fed into the valve body by using the two different glue pipes to be mixed, the inside of the valve body is unevenly mixed, in patent CN217857034U, the glue of two cavities corresponding to different components is adopted, and then the two cavities are communicated with different glue outlet channels to be mixed, so that the mixing is uneven.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a dispensing valve.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a dispensing valve, includes the female head of luer, the afterbody of female head of luer extends has first barrel, first barrel is equipped with the first through-hole that is linked together with female head of luer and coaxial core, the aperture at first through-hole middle part is less than the aperture at both ends, the aperture at first through-hole lower part matches with the aperture of the inside through-hole of female head of luer tail, install the diameter with the diameter at first through-hole middle part assorted piston rod that can slide from top to bottom in first through-hole in the first through-hole, upper piston and the lower piston that the diameter matches with first through-hole lower part aperture are installed to the lower extreme of piston rod, first barrel is adjacent to the upper extension of outer wall of female head of luer has the second barrel, the second barrel is equipped with the second through-hole that is linked together with first through-hole and becomes the structure of falling the cone, the removable tube core that is provided with positive and negative helical blade in the second through-hole; the distance between the upper piston and the lower piston is larger than the aperture of the lower end of the second through hole.

Preferably, the first through hole is a first straight line portion with a straight line structure, a conical portion with an inverted conical structure, a second straight line portion with a straight line structure, a round table portion with a round table structure and a third straight line portion with a straight line structure in sequence from top to bottom, and the second cylinder is arranged on the outer wall of the third straight line portion.

Preferably, the tube core is formed by sequentially connecting a plurality of positive helical blades and negative helical blades, one negative helical blade is arranged between two adjacent positive helical blades, and the radial widths of the positive helical blades and the negative helical blades are sequentially reduced from the upper part to the lower part of the second through hole.

Preferably, the upper end of the second cylinder body extends to form a connecting part with a cylinder structure, the upper end of the connecting part is a threaded part provided with internal threads, and the lower end of the connecting part is a transition part with an inverted truncated cone structure.

Preferably, a boss extends from the upper part of the outer wall of the first cylinder.

Preferably, a silica gel plug is arranged at the upper end in the first cylinder, and a slit through which a piston rod passes is formed in the silica gel plug.

Preferably, a clamping groove is formed in the upper portion of the wall of the second through hole, and a clamping block capable of being clamped with the clamping groove extends from the edge of the top end of the tube core.

The utility model has the beneficial effects that: the utility model sets the luer head and the valve body into a whole, the luer head is used for conveniently connecting the needle head, the tube core in the second cylinder body can realize the mixing dispensing of the double-component glue by using a single glue pipeline, the use is convenient, the tube core can also be directly connected to a dispensing machine for use, the use of a mixing pipe is not needed to be connected, the connection of a dispensing system is simplified, the movement of a piston rod and a piston is used for controlling the outflow of the glue, the operation is more convenient, the tube core in the second cylinder body is detachable, the tube core can be detached when the single-component glue is used, or the tube core is kept to be arranged in the second cylinder body when the viscosity of the single-component glue is lower, and the flow velocity of the glue is reduced by using the blade on the tube core, so that the dispensing can be better controlled.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an embodiment of the present utility model;

part names and serial numbers in the figure: 1-luer mother head 2-first cylinder 20-first through hole 200-first straight line part 201-conical part 202-second straight line part 203-round platform part 204-third straight line part 3-piston rod 30-upper piston 31-lower piston 4-second cylinder 40-second through hole 41-connecting part 5-tube core 50-positive helical blade 51-reverse helical blade 6-boss 7-silica gel plug 70-slit 8-clamping groove 80-clamping block.

Detailed Description

The present utility model will be further described in connection with the following examples which are to be construed as illustrative and not limiting the scope of the utility model. The implementation conditions used in the examples may be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are generally those in routine experiments. Furthermore, directional terms, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., in the present utility model are used only with reference to the directions of the attached drawings, and are used for better and more clear description and understanding of the present utility model, not to indicate or imply the orientations that the present utility model must have, and thus should not be construed as limiting the present utility model.

The embodiment of the utility model is shown in fig. 1 to 2, and the dispensing valve comprises a luer female head 1, wherein a first cylinder body 2 extends from the tail part of the luer female head 1, so that the luer female head 1 and the first cylinder body 2 are integrally formed into a valve body integrated structure, a needle head can be conveniently connected by using the luer female head 1, the dispensing valve is more beneficial to use, the first cylinder body 2 is provided with a first through hole 20 which is communicated with the luer female head 1 and coaxial with the luer female head, the aperture of the middle part of the first through hole 20 is smaller than the aperture of two ends, and the aperture of the lower part of the first through hole 20 is matched with the aperture of the inner through hole at the tail end of the luer female head 1; the piston rod 3 with the diameter matched with the aperture in the middle of the first through hole 20 and capable of sliding up and down in the first through hole 20 is arranged in the first through hole 20, the upper piston 30 and the lower piston 31 with the diameter matched with the aperture in the lower part of the first through hole 20 are arranged at the lower end of the piston rod 3, the first through hole 20 forms a structure with two large ends and a small middle part like a dumbbell, the piston rod 3 is prevented from shaking when moving up and down in the first through hole 20, the aperture in the lower part of the first through hole 20 is matched with the aperture at the tail part of the luer head 1, the diameter of the lower piston 31 is matched with the aperture in the lower part of the first through hole 20, namely, the lower piston 31 can enter the tail part of the internal through hole of the luer head 1 under the pushing of the piston rod 3 to seal the luer head 1 to prevent the glue from flowing, the second cylinder 4 extends obliquely upwards on the outer wall of the first cylinder 2 adjacent to the luer head 1, the second cylinder 4 is provided with a second through hole 40 with a reverse cone structure communicated with the first through hole 20, and the second through hole 40 is provided with a detachable spiral blade 5; the distance between the upper piston 30 and the lower piston 31 is larger than the aperture of the lower end of the second through hole 40, so that when the lower piston 31 seals the through hole at the tail of the luer master 1, the upper piston 30 is positioned above the outlet of the lower end of the second through hole 40, the outlet of the lower end of the second through hole 40 is positioned in the space surrounded by the upper and lower pistons, glue cannot flow upwards or downwards in the first through hole 20, the outlet of the lower end of the second through hole 40 is gradually exposed from the space surrounded by the upper and lower pistons along with the upward pulling of the lower piston 31 by the piston rod 3, the glue outlet of the exposed part is gradually enlarged along with the enlargement of the glue outlet, the purpose of adjusting the glue outlet is achieved, the operation is more convenient, the pipe core 5 in the second through hole 40 is detachably arranged in the second through hole 40, different use requirements can be met, the single-component glue can be removed, or the single-component glue viscosity is low in order to control the flow rate of the single-component glue, the pipe 5 is kept in the second through hole 40, the pipe 5 is arranged in the space surrounded by the upper and the lower-component glue, the single-component glue is reduced, the two-component glue can be directly connected to the second through hole 4, the two-point glue can be directly connected with the injection molding machine, the second through the pipe 4, the two-point glue can be directly connected with the pipe can be directly, and the two-shaped glue pipe can be connected with the pipe 1, and the two-shaped piston can be directly connected with the pipe through the pipe 4.

For the first through hole 20, the first through hole 20 is sequentially provided with a first linear part 200 with a linear structure, a conical part 201 with an inverted conical structure, a second linear part 202 with a linear structure, a round table part 203 with a round table structure and a third linear part 204 with a linear structure from top to bottom, and the second cylinder 4 is arranged on the outer wall of the third linear part 204, so that the piston rod 3 can conveniently move up and down, and the piston rod 3 can be prevented from being pulled out of the first through hole 20 in the operation process. Correspondingly, in order to avoid dust, sundries and the like to fall into the first through hole 20 through the top end of the first through hole 20, a silica gel plug 7 is arranged at the upper end in the first barrel 2, a slit 70 through which a piston rod passes is arranged on the silica gel plug 7, the silica gel plug 7 is detachably arranged at the top end of the first barrel 2, and the slit 70 on the silica gel plug 7 is convenient for the top end of the piston rod 3 to pass out.

For the tube core 5 in the second cylinder 4, the tube core 5 is formed by sequentially connecting a plurality of positive spiral blades 50 and negative spiral blades 51, one negative spiral blade 51 is arranged between two adjacent positive spiral blades 50, and the radial widths of the positive spiral blades 50 and the negative spiral blades 51 are sequentially reduced from the upper part to the lower part of the second through hole 40, namely, the positive spiral blades 50 and the negative spiral blades 51 are in staggered connection to form a whole, so that three effects of diversion, cross mixing and reverse rotational flow are generated through the tube core 5 after glue enters the second through hole 40, and the double-component glue can be quickly and uniformly diffused and mixed, thereby achieving the purpose of instant uniform mixing. The upper portion of second through-hole 40 pore wall is provided with draw-in groove 8, the edge at die 5 top extends has the fixture block 80 that can block mutually with draw-in groove 8, and draw-in groove 8 is offered from the top down of second through-hole 40, makes things convenient for the installation of die 5.

Further improvement, the upper end of the second cylinder 4 extends to have a connecting portion 41 with a cylinder structure, the upper end of the connecting portion 41 is provided with a threaded portion with internal threads, the lower end is provided with a transition portion with an inverted circular truncated cone structure, the connecting portion 41 is convenient to install and connect on a dispensing machine, and connection between the connecting portion and the connecting portion is achieved without using an external connector or other equipment, so that the use is more convenient.

Further improvement, the boss 6 extends on the upper portion of the outer wall of the first barrel 2, and the dispensing valve can be conveniently held by the boss 6 and applied with acting force to the piston rod 3, so that the piston rod 3 is conveniently pushed and pulled.

While the utility model has been described in detail in the foregoing general description and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

Claims

1. A dispensing valve which is characterized in that: the device comprises a luer female head, wherein a first cylinder body extends from the tail of the luer female head, a first through hole which is communicated with the luer female head and is coaxial with a core wire is arranged on the first cylinder body, the aperture of the middle part of the first through hole is smaller than the aperture of two ends, the aperture of the lower part of the first through hole is matched with the aperture of the inner through hole of the tail end of the luer female head, a piston rod which has the diameter matched with the aperture of the middle part of the first through hole and can slide up and down in the first through hole is arranged in the first through hole, and an upper piston and a lower piston which have the diameters matched with the aperture of the lower part of the first through hole are arranged at the lower end of the piston rod; the first cylinder extends upwards obliquely to form a second cylinder on the outer wall adjacent to the luer female head, the second cylinder is provided with a second through hole which is communicated with the first through hole and is in an inverted cone structure, and a tube core with positive and negative helical blades is detachably arranged in the second through hole; the distance between the upper piston and the lower piston is larger than the aperture of the lower end of the second through hole.

2. The dispensing valve of claim 1, wherein the first through hole comprises a first linear portion in a linear structure, a conical portion in an inverted conical structure, a second linear portion in a linear structure, a round table portion in a round table structure and a third linear portion in a linear structure in sequence from top to bottom, and the second cylinder is arranged on the outer wall of the third linear portion.

3. The dispensing valve of claim 1, wherein the tube core is formed by sequentially connecting a plurality of positive spiral blades and negative spiral blades, one negative spiral blade is arranged between two adjacent positive spiral blades, and the radial widths of the positive spiral blades and the negative spiral blades are sequentially reduced from the upper part to the lower part of the second through hole.

4. The dispensing valve of claim 1, wherein the upper end of the second cylinder body extends to form a connecting part with a cylinder structure, the upper end of the connecting part is a threaded part provided with internal threads, and the lower end of the connecting part is a transition part with an inverted circular truncated cone structure.

5. The dispensing valve of claim 1, wherein the upper portion of the outer wall of the first cylinder extends to form a boss.

6. The dispensing valve of claim 1, wherein a silicone plug is disposed at an upper end in the first cylinder, and a slit is disposed in the silicone plug through which a piston rod passes.

7. The dispensing valve of claim 1, wherein: the upper part of the wall of the second through hole is provided with a clamping groove, and the edge of the top end of the tube core extends to form a clamping block which can be clamped with the clamping groove.