CN216800420U

CN216800420U - Structure-improved rotary angle film valve

Info

Publication number: CN216800420U
Application number: CN202220073391.XU
Authority: CN
Inventors: 李华
Original assignee: Dongguan Huichuang Intelligent Equipment Co ltd
Current assignee: Dongguan Huichuang Intelligent Equipment Co ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-06-24
Anticipated expiration: 2032-01-12

Abstract

The utility model discloses a novel rotation angle film valve with an improved structure, which comprises a valve seat, a valve rod, a nozzle and a valve needle, wherein the valve rod is arranged on the valve seat; the valve seat is internally provided with a channel, the valve seat is provided with a glue inlet, and the glue inlet is communicated with the channel; the valve rod is arranged on the valve seat and is provided with a flow passage, and the upper end of the flow passage is communicated with the passage; the nozzle is arranged at the lower end of the valve rod, a plurality of convex ribs used for guiding the valve needle to prevent the valve needle from deflecting are arranged on the inner wall of the nozzle in a protruding mode, and a glue storage groove is formed between every two adjacent convex ribs. Through adopting ultrashort type spout to set up convex concave position in the inboard of spout, the lower extreme that cooperates the needle simultaneously has and is used for plugging up the spherical end cap of spout with convex concave position looks adaptation, and is provided with the glue storage tank, stores up the glue inslot and has the glue solution in real time, thereby is favorable to realizing fast glue discharging and disconnected glue, appears big small head, the uneven phenomenon of thickness when can not causing the switch to glue, offers convenience for the spraying operation.

Description

Structure-improved rotary angle film valve

Technical Field

The utility model relates to the technical field of rubber valves, in particular to a novel rotating angle film valve with an improved structure.

Background

In the spraying industry, in particular to the spraying industry of circuit board anti-corrosion materials, such as frequency converter circuit boards, PLC and industrial PC circuit boards of industrial automatic control products; air conditioner control panels and washing machine control panels in the household appliance industry; in the circuit board of the automobile industry, a moisture-proof and corrosion-proof process is required to be carried out on the circuit board. At present, a layer of resin material, such as alkyd resin, polyurethane, acrylic resin, organic silicon resin, epoxy resin, polyester and the like, is mainly coated on a finished product of a circuit board, and the coating processes adopted include brushing, manual spraying, automatic spraying and the like, and the automatic spraying reduces the labor intensity of personnel, does not influence the human health, has good spraying consistency and quality and is widely applied, but the automatic spraying equipment generally uses an atomizing spray valve which has the atomizing effect of air participating in liquid during spraying, can cause atomized particles to pollute the product and the equipment, and simultaneously can cause pollution to the product because flying fog in the air can float to other places of the product, so that the parts which cannot be sprayed are required to be protected by adhesive paper in advance, thereby reducing the production efficiency and improving the production and labor cost; meanwhile, as a part of liquid is converted into vaporous particles by using the atomizing nozzle, the utilization rate of the material is reduced; particularly, in the aspect of spraying an anti-corrosion material on a circuit board, the atomization spraying can also cause pollution to conductive spraying-forbidden areas such as a connector and the like, so that the phenomenon of poor quality is caused.

Therefore, a film spray valve is provided at present, the up-and-down movement of the piston and the valve needle is realized through the matching of the piston and the valve needle, the valve needle sequentially penetrates through the bottom end of the cylinder block and the liquid control seat when moving downwards and then reaches the inside of the spray nozzle, and the liquid in the liquid control seat enters the spray nozzle under the action of external pressure to form a liquid film through the spray nozzle and then is sprayed on the surface of a workpiece; the spray valve is non-atomized, and the edge of the sprayed line is clear without splashing and burrs, so that the part which cannot be sprayed is not required to be protected by adhesive paper in advance during the actual spraying operation, the production efficiency is improved, and the production cost is reduced; the spray valve can not generate gas fog in the spraying process, and the utilization rate of materials can reach more than 99%.

However, the valve needle of the film spray valve in the prior art adopts an inclination sealing mode, namely, the lower end of the valve needle is used for plugging the part of the nozzle and is designed into a cone shape, the corresponding nozzle is designed into a cone shape, the length is longer, and the length reaches more than 11mm, so that the mode is very unfavorable for fast glue discharging and glue breaking, the phenomenon of uneven size and thickness is caused when the glue is opened and closed, and the inconvenience is brought to the spraying operation. And the movement of a piston in the film spray valve is not stable, the movement of a valve needle is easy to deflect, and the glue discharging and the glue breaking bring adverse effects. Therefore, there is a need to develop a solution to the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to the defects in the prior art, and the main object of the present invention is to provide a novel film valve with an improved structure for a rotation angle, which effectively solves the problem that the existing film spray valve cannot rapidly glue and break.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a novel rotary angle film valve with an improved structure comprises a valve seat, a valve rod, a nozzle and a valve needle; the valve seat is internally provided with a channel, the valve seat is provided with a glue inlet, and the glue inlet is communicated with the channel; the valve rod is arranged on the valve seat and is provided with a flow passage, and the upper end of the flow passage is communicated with the passage; the nozzle is arranged at the lower end of the valve rod, a plurality of convex ribs for guiding the valve needle to prevent the valve needle from deflecting are convexly arranged on the inner wall of the nozzle, a glue storage groove is formed between every two adjacent convex ribs, the upper end of the glue storage groove is communicated with the flow channel, a nozzle is arranged at the bottom of the nozzle and is an ultra-short nozzle, an arc-shaped concave position is concavely arranged on the inner side edge of the nozzle, and the arc-shaped concave position is communicated between the nozzle and each glue storage groove; the valve needle can be movably arranged in the channel and the flow passage up and down and extends into the nozzle, and the lower end of the valve needle is provided with a spherical plug which is matched with the arc-shaped concave position and is used for sealing and blocking the nozzle.

Preferably, the bottom of the nozzle is provided with a forming nozzle which is in opposite communication with the nozzle.

Preferably, the valve rod is arranged on the valve seat in a reciprocating rotation angle mode, and a driving mechanism is arranged on the valve seat and drives the valve rod to rotate back and forth by an angle.

Preferably, the driving mechanism includes a motor, a driving pulley, a driven pulley and a transmission belt, the motor is fixed on the outer side surface of the valve seat, the driving pulley is fixed on an output shaft of the motor, the driven pulley is fixed on the valve rod, and the transmission belt is connected between the driving pulley and the driven pulley.

As a preferred scheme, the convex rib is a plurality of equally arranged at intervals on the circumference, correspondingly, the glue storage groove is a plurality of equally arranged at intervals on the circumference, so as to form a plum petal structure.

Preferably, the length distance of the spout is 0.5-5 mm.

Preferably, the valve rod includes an outer tube and an inner tube, the inner tube is disposed in the outer tube and is coaxial with the outer tube, an annular air passage is formed between an outer wall of the inner tube and an inner wall of the outer tube, the flow passage is located in the inner tube, and a lower end of the annular air passage is communicated with a lower end of the flow passage.

As a preferred scheme, an air cavity is arranged in the valve seat, an air hole communicated with the air cavity is formed in the valve seat, a piston capable of moving up and down is arranged in the air cavity, and the valve needle extends into the air cavity and is fixedly connected with the piston.

Preferably, an annular boss for supporting the piston is convexly arranged on the bottom surface of the air cavity, the annular boss is positioned on the periphery of the valve needle, the outer diameter of the annular boss is smaller than that of the piston, and the air hole penetrates through the inner bottom surface of the air cavity and is positioned on the outer side of the annular boss.

As a preferable scheme, an adjusting screw rod for controlling the stroke of the valve needle is arranged on the valve seat, the inner end of the adjusting screw rod extends into the air cavity, a cover with scale indication is fixed at the upper end of the adjusting screw rod, and the cover is rotatably sleeved at the upper end of the valve seat.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, and specifically, the technical scheme includes that:

one, through adopting ultrashort type spout to set up convex concave position in the inboard of spout, the lower extreme of cooperation needle simultaneously has and is used for plugging up the spherical end cap of spout with convex concave position looks adaptation, and is provided with the glue storage tank, stores up the glue inslot and has the glue solution in real time, thereby is favorable to realizing fast glue discharging and disconnected glue, appears big small end, the uneven phenomenon of thickness when can not causing the switch to glue, brings the facility for the spraying operation.

And the annular boss is arranged on the bottom surface of the air cavity, and the piston is supported by the annular boss, so that the piston is prevented from being attached to the bottom surface of the air cavity, air is enabled to act on the piston better, the piston moves stably, and the valve needle is driven to move better.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a perspective view of a preferred embodiment of the present invention;

FIG. 2 is a perspective view of another angle of the preferred embodiment of the present invention;

FIG. 3 is a cross-sectional view of a preferred embodiment of the present invention;

FIG. 4 is a top view of a nozzle in accordance with a preferred embodiment of the present invention;

FIG. 5 is a cross-sectional view of a nozzle in a preferred embodiment of the utility model.

The attached drawings indicate the following:

10. valve seat 11, channel

12. Glue inlet 13 and air cavity

14. Air hole 15, annular boss

20. Valve rod 21, outer tube

22. Inner tube 201, flow channel

202. Annular air passage 30, nozzle

31. Convex rib 32 and glue storage groove

33. Spout 34, circular arc concave position

40. Valve needle 41 and spherical plug

50. Piston 61, adjusting screw

62. Cover 70 and forming nozzle

80. Drive mechanism 81 and motor

82. Driving pulley 83 and driven pulley

84. A transmission belt.

Detailed Description

Referring to fig. 1 to 5, the detailed structure of the preferred embodiment of the present invention is shown, which includes a valve seat 10, a valve stem 20, a nozzle 30 and a valve needle 40.

The valve seat 10 has a passage 11 therein, and the valve seat 10 is provided with a glue inlet 12, wherein the glue inlet 12 is communicated with the passage 11. In this embodiment, the valve seat 10 has an air cavity 13 therein, the valve seat 10 is provided with an air hole 14 communicating with the air cavity 13, and the air cavity 13 is provided with a piston 50 capable of moving up and down; and, the bottom surface of the air cavity 13 is convexly provided with an annular boss 15 for supporting the piston 50, the annular boss 15 is positioned at the periphery of the valve needle 40, the outer diameter of the annular boss 15 is smaller than that of the piston 50, and the air hole 14 penetrates through the inner bottom surface of the air cavity 13 and is positioned at the outer side of the annular boss 15, so that the inlet air can better act on the piston 50, and the piston 50 can stably move.

The valve rod 20 is arranged on the valve seat 10, the valve rod 20 is provided with a flow passage 201, and the upper end of the flow passage 201 is communicated with the channel 11; in this embodiment, the valve rod 20 includes an outer tube 21 and an inner tube 22, the inner tube 22 is disposed in the outer tube 21 and is disposed coaxially with the outer tube 21, an annular air passage 202 is formed between an outer wall of the inner tube 22 and an inner wall of the outer tube 21, the flow passage 201 is disposed in the inner tube 22, and a lower end of the annular air passage 202 communicates with a lower end of the flow passage 201.

The nozzle 30 is arranged at the lower end of the valve rod 20, a plurality of convex ribs 31 for guiding the valve needle 40 to prevent the valve needle 40 from deflecting are convexly arranged on the inner wall of the nozzle 30, a glue storage groove 32 is formed between every two adjacent convex ribs 31, the upper end of the glue storage groove 32 is communicated with the flow channel 201, a nozzle 33 is arranged at the bottom of the nozzle 30, the nozzle 33 is an ultra-short nozzle, an arc-shaped concave position 34 is concavely arranged on the inner side edge of the nozzle 33, and the arc-shaped concave position 34 is communicated between the nozzle 33 and each glue storage groove 32; in this embodiment, the protruding rib 31 is for being a plurality of that the circumference interval is equallyd divide and arrange, and corresponding, this glue storage groove 32 is a plurality of that the circumference interval is equallyd divide and arrange to form plum blossom petal structure, the length distance of spout 33 is 0.5-5mm, and the distance is shorter, more is favorable to going out glue fast and glue breaking.

The valve needle 40 is movably disposed in the channel 11 and the flow passage 201 up and down and extends into the nozzle 30, and the lower end of the valve needle 40 is provided with a spherical plug 41 which is matched with the circular arc-shaped concave portion 34 and is used for sealing and blocking the nozzle opening 33. The upper end of the needle 40 extends into the air chamber 13 and is fixedly connected to the piston 50.

And an adjusting screw 61 for controlling the stroke of the valve needle 40 is arranged on the valve seat 10, the inner end of the adjusting screw 61 extends into the air cavity 13, a cover 62 with scale indication is fixed at the upper end of the adjusting screw 61, and the cover 62 is rotatably sleeved on the upper end of the valve seat 10.

Further, a forming nozzle 70 is installed at the bottom of the nozzle 30, and the forming nozzle 70 is in facing communication with the spout 33. The valve rod 20 is disposed on the valve seat 10 to be rotatable back and forth, and the valve seat 10 is provided with a driving mechanism 80, and the driving mechanism 80 drives the valve rod 20 to rotate back and forth by a certain angle. Specifically, the driving mechanism 80 includes a motor 81, a driving pulley 82, a driven pulley 83, and a belt 84, the motor 81 is fixed to the outer surface of the valve seat 10, the driving pulley 82 is fixed to an output shaft of the motor 81, the driven pulley 83 is fixed to the valve stem 20, and the belt 84 is connected between the driving pulley 82 and the driven pulley 83.

Detailed description the working principle of the present embodiment is as follows:

when the device works, the device is arranged on spraying equipment (such as a coating machine and the like), the glue inlet 12 is connected with a glue supply device, and the air hole 14 is connected with an external air source and an air exhaust device. After the device is started, the glue supply device continuously supplies glue to the glue inlet 12, the glue solution sequentially enters the channel 11, the flow channel 201 and the nozzle 30, the valve needle 40 moves downwards to the lowest position in the original state, the spherical plug 41 is embedded in the arc-shaped concave position 34 to block the nozzle 33, when glue needs to be sprayed, an external air source supplies air to the air hole 14, the piston 50 moves upwards, the valve needle 40 is driven by the piston 50 to move upwards, the spherical plug 41 leaves the arc-shaped concave position 34 to open the nozzle 33, and the glue solution can be quickly sprayed out of the nozzle 33 and is output after being formed into a corresponding film shape through the forming nozzle 70 due to the fact that the glue solution is stored in the glue storage tank 32 in real time. When glue spraying needs to be stopped, the external air source stops supplying air to the air hole 14, air in the air cavity 13 is extracted by the air extracting device in a switching mode, the piston 50 moves downwards, the valve needle 40 is driven by the piston 50 to move downwards, and the spherical plug 41 is rapidly and downwards movably embedded into the arc-shaped concave position 34 to plug the nozzle 33, so that rapid glue breaking is achieved.

The design of the utility model is characterized in that: at first, through adopting ultrashort type spout to set up convex concave position in the inboard of spout, the lower extreme that cooperates the needle simultaneously has with convex concave position looks adaptation and is used for plugging up the spherical end cap of spout, and is provided with the glue storage tank, has the glue solution in the glue storage tank in real time, thereby is favorable to realizing fast glue discharging and disconnected glue, appears big small end, the uneven phenomenon of thickness when can not causing the switch to glue, brings the facility for the spraying operation. Secondly, the annular boss is arranged on the bottom surface of the air cavity, the piston is supported by the annular boss, and the piston is prevented from being attached to the bottom surface of the air cavity, so that air can be better supplied to the piston, the piston can move stably, and the valve needle can be better driven to move.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims

1. The utility model provides a novel film valve of rotation angle of improvement structure which characterized in that: comprises a valve seat, a valve rod, a nozzle and a valve needle; the valve seat is internally provided with a channel, the valve seat is provided with a glue inlet, and the glue inlet is communicated with the channel; the valve rod is arranged on the valve seat and is provided with a flow passage, and the upper end of the flow passage is communicated with the passage; the nozzle is arranged at the lower end of the valve rod, a plurality of convex ribs for guiding the valve needle to prevent the valve needle from deflecting are convexly arranged on the inner wall of the nozzle, a glue storage groove is formed between every two adjacent convex ribs, the upper end of the glue storage groove is communicated with the flow channel, a nozzle is arranged at the bottom of the nozzle and is an ultra-short nozzle, an arc-shaped concave position is concavely arranged on the inner side edge of the nozzle, and the arc-shaped concave position is communicated between the nozzle and each glue storage groove; the valve needle can be movably arranged in the channel and the flow passage up and down and extends into the nozzle, and the lower end of the valve needle is provided with a spherical plug which is matched with the arc-shaped concave position and is used for sealing and blocking the nozzle.

2. The improved structure of the rotation angle novel membrane valve as claimed in claim 1, wherein: and a forming nozzle is arranged at the bottom of the nozzle and is communicated with the nozzle in a right-to-right mode.

3. The improved structure of the rotation angle novel membrane valve according to claim 1 or 2, characterized in that: the valve rod can be arranged on the valve seat in a reciprocating rotation angle mode, and the valve seat is provided with a driving mechanism which drives the valve rod to rotate back and forth by a rotating angle.

4. The improved structure of the rotation angle novel membrane valve as claimed in claim 3, wherein: the driving mechanism comprises a motor, a driving belt wheel, a driven belt wheel and a transmission belt, the motor is fixed on the outer side face of the valve seat, the driving belt wheel is fixed on an output shaft of the motor, the driven belt wheel is fixed on the valve rod, and the transmission belt is connected between the driving belt wheel and the driven belt wheel.

5. The improved structure of the rotation angle novel membrane valve as claimed in claim 1, wherein: the fin is for being a plurality of that the circumference interval is equallyd divide and arrange, and what correspond should store up the gluey groove and be a plurality of that the circumference interval is equallyd divide and arrange to form plum blossom petal structure.

6. The improved structure of the rotation angle novel membrane valve as claimed in claim 1, wherein: the length distance of the nozzle is 0.5-5 mm.

7. The improved structure of the rotation angle novel membrane valve as claimed in claim 1, wherein: the valve rod comprises an outer pipe and an inner pipe, the inner pipe is arranged in the outer pipe and is coaxial with the outer pipe, an annular air passage is formed between the outer wall of the inner pipe and the inner wall of the outer pipe, the flow passage is located in the inner pipe, and the lower end of the annular air passage is communicated with the lower end of the flow passage.

8. The improved structure of the rotation angle novel membrane valve as claimed in claim 1, wherein: the valve seat is internally provided with an air cavity, the valve seat is provided with an air hole communicated with the air cavity, the air cavity is internally provided with a piston capable of moving up and down, and the valve needle extends into the air cavity and is fixedly connected with the piston.

9. The improved structure of the rotation angle novel membrane valve according to claim 8, wherein: the bottom surface of the air cavity is convexly provided with an annular boss used for supporting the piston, the annular boss is positioned on the periphery of the valve needle, the outer diameter of the annular boss is smaller than that of the piston, and the air hole penetrates through the inner bottom surface of the air cavity and is positioned on the outer side of the annular boss.

10. The improved structure of the rotation angle novel membrane valve according to claim 8, wherein: the valve seat is provided with an adjusting screw rod for controlling the stroke of the valve needle, the inner end of the adjusting screw rod extends into the air cavity, the upper end of the adjusting screw rod is fixedly provided with a cover with scale indication, and the cover is rotatably sleeved at the upper end of the valve seat.