KR102621298B1 - Automatic cleaning dispensing valve - Google Patents

Abstract

The present invention relates to a self-cleaning dispensing valve that injects a solution into an object, comprising a solution inlet 121 that receives the solution from a solution syringe 130, a discharge nozzle 123 that discharges the solution to the object, and the solution. a dispensing nozzle 120 having a solution movement path 122 connecting the inlet 121 and the discharge nozzle 123; a valve body 110 provided on an upper portion of the dispensing nozzle 120 and opening and closing the discharge nozzle 123 of the dispensing nozzle 120; a solution syringe (130) located in parallel with the valve body (110) above the dispensing nozzle (120) and supplying a solution to the solution inlet (121); A solution provided at the top of the solution syringe 130, air supplied to the top of the solution to apply pressure so that the solution is discharged through the discharge nozzle 123, and the solution syringe 130. It is characterized by including a syringe head 140 that supports selectively supplying any one of the cleaning solutions for cleaning the solution remaining inside the dispensing valve 100 after all of the internal solutions are discharged.

Description

Dispensing valve capable of automatic cleaning {Automatic cleaning dispensing valve}

The present invention relates to a dispensing valve, and more specifically, to a dispensing valve capable of automatic cleaning without disassembling the valve.

Recently, secondary battery modules are widely used in various fields. Lithium-ion batteries are most often used as secondary batteries in secondary battery modules.

The secondary battery module not only protects the secondary battery from external shocks, but also effectively controls stress changes caused by repeated charging and discharging of the secondary battery, and prevents thermal runaway in the event of a secondary battery fire, preventing secondary damage. A design is needed to avoid giving up.

For this purpose, thermal runaway prevention manufacturing methods using heat-resistant liquid materials have been widely used recently.

When manufacturing a thermal runaway prevention layer using a liquid material, not only can the thickness of the thermal runaway prevention layer change elastically in response to expansion of components due to heat and moisture of the secondary battery through the compressive stress effect, but also the inside of the secondary battery module. If a fire occurs, secondary damage can be prevented by preventing thermal runaway.

Figure 1 is a diagram showing a dispensing device (1) for injecting a solution to prevent thermal runaway into a secondary battery module (M).

As shown, the dispensing device 1 includes a base 10 on which the secondary battery module M is mounted, a dispensing head 20 provided on the upper part of the base 10, and a dispensing head 20. A dispensing device that is coupled to the head drive unit 30, which moves in the It includes a valve 40, a solution syringe 50 that supplies solution F to the dispensing valve 40, and a main body frame 60 that supports the head drive unit 30.

As shown in (a) of FIG. 2, the dispensing valve 40 is connected to a control unit (not shown) and is connected to a valve body 41 that receives the solution injection time and injection amount, and is located at the lower part of the valve body 41. It includes a dispensing nozzle (43).

The dispensing nozzle 43 is connected to the solution syringe 50 and has a solution inlet (43a) for receiving the solution (F), and a discharge nozzle (43a) for discharging the solution (F) introduced inside to the secondary battery module (M). 43b) is provided. A solution movement path (not shown) through which the solution F moves is formed between the solution inlet 43a and the discharge nozzle 43b.

Here, when the dispensing valve 40 discharges all of the solution (F) inside the solution syringe (50) to the secondary battery module (M), the solution (F) remaining inside the solution movement path (not shown) must be cleaned. do. Since the solution (F) hardens over time, if the remaining solution in the solution passageway (not shown) is not cleaned, the solution passageway (not shown) will become clogged.

Accordingly, the conventional dispensing valve 40 is used as shown in (b) of FIG. 2 for cleaning the solution movement path (not shown), the solution inlet 43a, and the discharge nozzle 43b. After disassembly, the operator had to clean the dispensing nozzle (43) directly.

The cleaning process requires not only disassembly and assembly, but also cleaning of micro passages, so it takes a considerable amount of time and is very tiring for workers.

The purpose of the present invention is to solve the above-mentioned problems and to provide a dispensing valve capable of automatically cleaning the dispensing nozzle without disassembly.

Another object of the present invention is to provide a dispensing valve that can increase cleaning efficiency.

The above objects and various advantages of the present invention will become more apparent to those skilled in the art from preferred embodiments of the present invention.

The object of the present invention described above can be achieved by a self-cleaning dispensing valve that injects a solution into a subject. The dispensing valve of the present invention includes a solution inlet 121 that receives a solution from a solution syringe 130, a discharge nozzle 123 that discharges the solution to an object, and the solution inlet 121 and the discharge nozzle 123. a dispensing nozzle 120 formed with a solution movement path 122 connecting it; a valve body 110 provided on an upper portion of the dispensing nozzle 120 and opening and closing the discharge nozzle 123 of the dispensing nozzle 120; a solution syringe (130) located in parallel with the valve body (110) above the dispensing nozzle (120) and supplying a solution to the solution inlet (121); A solution provided at the top of the solution syringe 130, air supplied to the top of the solution to apply pressure so that the solution is discharged through the discharge nozzle 123, and the solution syringe 130. It is characterized by including a syringe head 140 that supports selectively supplying any one of the cleaning solutions for cleaning the solution remaining inside the dispensing valve 100 after all of the internal solutions are discharged.

According to one embodiment, the syringe head 140 includes a head body 141 coupled to the upper part of the solution syringe 130; a solution inlet pipe 142 extending from the upper part of the head body 141 and connected to the solution storage tank 200, and having a first opening/closing valve 142a in a coupling area with the head body 141; a selective inflow pipe (143) extending from the side of the head body (141) through which air or cleaning liquid is selectively introduced, and having a second opening/closing valve (143a) in a coupling area with the head body (141); an air inflow pipe (144) branched at the end of the selective inflow pipe (143) and connected to the compressor (300) to receive air supply; At the end of the selective inflow pipe 143, there is a cleaning liquid inflow pipe 145 that extends coaxially with the selective inflow pipe 143 and receives the washing liquid from the washing liquid storage tank 400, and the selective inflow pipe 143 and a path control valve 150 provided in the connection area between the air inlet pipe 144 and the cleaning liquid inlet pipe 145 to adjust the path so that either air or cleaning liquid is supplied to the selective inflow pipe 143. ; a washing signal application unit 161 that receives a washing signal; When a cleaning signal is applied from the cleaning signal application unit 161, the first on/off valve 142a is closed, the second on/off valve 143a is open, and the path control valve 150 is connected to the air supply pipe 310. It may further include a control unit 160 that controls cleaning of the solution (F) remaining in the solution movement path 122 of the dispensing nozzle 120 after the cleaning solution is supplied to the solution syringe 130 by closing the solution. .

According to one embodiment, it is provided on the pipe of the cleaning liquid inlet pipe 145 connected to the path control valve 150, and a vortex is generated in the cleaning liquid moving from the cleaning liquid inlet pipe 145 to the path control valve 150. It may further include a vortex former 147 that causes the formation.

According to one embodiment, it is connected to the vortex former 147 and further includes a velocity acceleration tube 146 that increases the moving speed of the cleaning liquid supplied to the vortex former 147, and the velocity acceleration tube 146 The pipe of the outlet (146b) connected to the vortex former 147 may be formed to be narrower than the pipe of the inlet (146a).

The dispensing valve according to the present invention can automatically clean the solution remaining in the dispensing nozzle by supplying the cleaning solution to the dispensing nozzle through a solution syringe after solution injection is completed.

This has the advantage of being able to clean the dispensing nozzle without disassembling the dispensing valve.

In addition, since cleaning is performed by heating the cleaning solution and forming a vortex, it is effective in cleaning the product as cleanly as if the worker cleaned it manually.

1 is an exemplary diagram showing the configuration of a general dispensing device;
Figure 2 is an example diagram showing the cleaning process of a conventional dispensing valve;
Figure 3 is a perspective view showing the configuration of a dispensing valve according to the present invention;
Figure 4 is a cross-sectional view showing the cross-sectional configuration of the dispensing valve according to the present invention;
Figure 5 is a block diagram schematically showing the control flow of the dispensing valve according to the present invention;
Figures 6 to 8 are exemplary diagrams showing the operation process of the dispensing valve according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those with average knowledge in the art. Therefore, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that identical members in each drawing may be indicated by the same reference numerals. Detailed descriptions of well-known functions and configurations that are judged to unnecessarily obscure the gist of the present invention are omitted.

FIG. 3 is a perspective view showing the configuration of the dispensing valve 100 according to the present invention, FIG. 4 is a cross-sectional view showing the cross-sectional configuration of the dispensing valve 100, and FIG. 5 is a control diagram of the dispensing valve 100. This is a block diagram schematically showing the flow.

As shown, the dispensing valve 100 according to the present invention includes a dispensing nozzle 120 for injecting a solution into an object, and a dispensing nozzle ( The valve body 110 that opens and closes the valve body 110, the solution syringe 130 that supplies the solution to the dispensing nozzle 120, and the solution syringe 130 are coupled to the upper part of the solution syringe 130 to supply solution, air and A syringe head 140 that selectively supplies one of the cleaning solutions (C), and a path control valve coupled to the syringe head 140 to adjust the supply path so that either air or cleaning agent is supplied to the syringe head 140. (150), and a syringe head (140) and a path control valve (150) so that the solution (F), air, and cleaning agent are supplied to the solution syringe (130) according to the preset order and whether or not the cleaning signal application unit (161) is operated. It includes a control unit 160 that controls.

The dispensing valve 100 according to the present invention allows the operator to selectively supply not only solution (F) and air (A) but also cleaning solution (C) to the syringe head 140 coupled to the solution syringe 130, allowing the operator to clean. When a cleaning signal is applied through the cleaning signal application unit 161 such as a button, the cleaning liquid (C) is supplied to the solution syringe 130 and then the dispensing nozzle 120 is cleaned to remove any remaining inside of the dispensing nozzle 120. Allow solution (F) to be removed.

Accordingly, the conventional inconvenience of having to separate and assemble the dispensing nozzle 120 in order to remove the solution (F) remaining inside the dispensing nozzle 120 can be eliminated.

Here, the solution sprayed by the dispensing valve 100 of the present invention may be silicone or paraffin if the object is a secondary battery module, but if the object is different, the solution may also be changed in various ways accordingly.

The valve body 110 is fixedly coupled to the dispensing head 20 (see FIG. 1) and moves along the head driving unit 30 together with the dispensing head 20, and the dispensing nozzle 120 discharges the solution to the object. support so that

As shown in FIG. 3, the valve body 110 is connected to the control unit 160, the control line 113, and the data line 111 to determine the discharge amount and amount of solution F to be discharged by the dispensing nozzle 120 to the object. Receives the discharge time.

As shown in FIG. 4, the inside of the valve body 110 is provided with a nozzle opening/closing valve 115 that opens and closes the discharge nozzle 123 of the dispensing nozzle 120 according to a control signal from the control unit 160. The nozzle opening/closing valve 115 is electrically operated by a control signal from the control unit 160, and moves the nozzle opening/closing member 115a up and down.

The dispensing nozzle 120 is provided at the lower part of the valve body 110 and discharges the internal solution (F) to the object according to the operation of the nozzle opening and closing member 115a of the valve body 110. The upper part of one side of the dispensing nozzle 120 is provided with a solution inlet 121 that is connected to the solution syringe 130 and receives the solution (F), and the lower part of the other side has a discharge nozzle 123 that discharges the solution (F) to the object. ) is provided.

A solution movement path 122 through which the solution F moves is provided between the solution inlet 121 and the discharge nozzle 123. The discharge nozzle 123 opens and closes the nozzle opening/closing valve 115 of the valve body 110 and discharges the solution F moved along the solution movement path 122 to the object.

The solution syringe 130 is provided on the upper part of the dispensing nozzle 120 to communicate with the solution inlet 121 of the dispensing nozzle 120. The lower part of the solution syringe 130 is coupled in communication with the solution inlet 121, and the upper part is coupled with the syringe head 140.

The solution syringe 130 accommodates the solution F so that the solution F filled therein can be supplied to the dispensing nozzle 120 by air pressure.

The syringe head 140 is coupled to the upper part of the solution syringe 130 and supports supply of one of solution (F), air (A), and cleaning solution (C) to the solution syringe (130). As shown in FIGS. 3 and 4, the syringe head 140 has a head body 141 fixed to the solution syringe 130, and is formed to extend to the upper part of the head body 141 to transmit a solution ( A solution inflow pipe 142 that introduces F), and a selective inflow pipe 143 that extends from the side of the head body 141 and introduces either air (A) or cleaning liquid (C) into the head body 141. And, an air inlet pipe 144 that is separated from the selective inflow pipe 143 and introduces air (A) into the selective inflow pipe 143, and is connected to the selective inflow pipe 143 and cleansing liquid into the selective inflow pipe 143. A washing liquid inlet pipe 145 that introduces (C), a vortex former 147 connected to the washing liquid inflow pipe 145 to form a vortex in the washing liquid (C), and a vortex former 147 that forms a vortex in the washing liquid (C). It includes a speed acceleration pipe 146 that accelerates the speed of the cleaning liquid (C) so that it can flow in at a high speed.

Although not shown in the drawing, the head body 141 is hermetically coupled to the upper part of the solution syringe 130 using a fixing means such as a screw connection, a hydraulic chuck, or a hydraulic lever. The solution inlet pipe 142 extends from the head body 141 and is connected to the solution storage tank 200 and the solution supply pipe 210.

A first opening/closing valve 142a is provided on the piping of the solution inlet pipe 142 to open and close the solution inlet pipe 142. The first on/off valve 142a is opened and closed by a control signal from the control unit 160, as shown in FIG. 5. As shown in (a) of FIG. 7, the first opening/closing valve 142a is opened when supplying the solution F to the solution syringe 130, so that the solution F flows into the solution syringe 130. Open the tube (142).

On the other hand, as shown in (b) of FIG. 7, when the solution F is completely filled in the solution syringe 130, the first opening/closing valve 142a closes the duct of the solution inlet pipe 142, and the solution syringe 130 ) to supply air (A) or cleaning solution (C).

The selective inflow pipe 143 extends from the side of the head body 141 to be spaced apart from the solution inflow pipe 142. The selective inflow pipe 143 allows either air (A) or cleaning liquid (C) to flow into the head body 141.

The selective inflow pipe 143 is provided with a second opening/closing valve (143a). The second on/off valve 143a is opened and closed by a control signal from the control unit 160. The second on/off valve 143a remains closed when the first on/off valve 142a is opened and the solution F flows into the solution syringe 130, as shown in (a) of FIG. It opens when air (A) is supplied as shown in (b) of Figure 7 or when cleaning liquid (C) is supplied as shown in (c) of Figure 7.

The air inflow pipe 144 branches perpendicularly to the selection inflow pipe 143 and allows air (A) to flow into the selection inflow pipe 143 according to the operating direction of the path control valve 150 by the control unit 160. . The air inlet pipe 144 is connected to the compressor 300 and the air supply pipe 310 to supply high-pressure air.

As shown in (b) of FIG. 7, when the path control valve 150 opens the air inlet pipe 144, the air (A) introduced through the air inlet pipe 144 is connected to the selective inlet pipe 143. The solution is supplied to the syringe 130 through the head body 141. The air (A) supplied to the solution syringe (130) applies pressure to the top of the solution (F), causing the solution (F) to be discharged through the discharge nozzle (123) of the dispensing nozzle (120).

Air (A) is supplied to the solution syringe (130) only when the nozzle opening/closing valve (115) opens the discharge nozzle (123) and the solution (F) is discharged.

The cleaning liquid inflow pipe 145 extends coaxially with the selective inflow pipe 143, and the cleaning liquid (C) flows into the selective inflow pipe 143 according to the operating direction of the path control valve 150 by the control unit 160. Let it happen. The cleaning fluid inlet pipe 145 is connected to the cleaning fluid supply pipe 440 of the cleaning fluid storage tank 400.

As shown in (c) of FIG. 7, when the path control valve 150 opens the cleaning liquid inlet pipe 145, the cleaning liquid (C) is supplied to the solution syringe 130 through the selective inflow pipe 143 and dispensing. After passing through the nozzle 120, it is discharged through the discharge nozzle 123. In this process, the cleaning liquid (C) cleans the solution (F) remaining inside the solution syringe (130), the solution inlet (121) of the dispensing nozzle (120), the solution movement path (122), and the surface of the discharge nozzle (123). do.

The syringe head 140 of the present invention includes a vortex former 147 and a velocity acceleration pipe 146 in the duct of the washing liquid inlet pipe 145 to improve the cleaning efficiency of the washing liquid C. The speed acceleration pipe 146 adjusts the speed of the cleaning liquid (C) moving along the cleaning liquid supply pipe 440 to increase, and the vortex former 147 forms a vortex in the cleaning liquid (C) moving in a straight line along the pipe. This improves cleaning efficiency.

As shown enlarged in FIG. 4, the speed acceleration pipe 146 gradually has an inner diameter from the inlet 146a through which the cleaning liquid C flows to the outlet 146b through which the cleaning liquid C flows into the vortex former 147. It is formed narrowly (D1>D2). As a result, the speed of the washing liquid (C) discharged through the outlet (146b) becomes faster than the speed of the washing liquid (C) flowing into the inlet (146a).

Considering the final speed of the cleaning liquid (C) in which the vortex is formed, it is preferable that the inner diameters of the inlet (146a) and the outlet (146b) differ by more than two times.

The vortex former 147 causes a vortex to be formed in the cleaning liquid (C) whose speed has been accelerated in the velocity acceleration tube (146). The vortex former 147 is equipped to form a vortex in the cleaning liquid (C) with only a physical structure without a separate electric means.

For this purpose, as shown in the enlarged side cross-section and front cross-section in FIG. 4, the vortex former 147 has a plurality of external devices that guide the movement of the cleaning liquid (C) discharged through the outlet (146b) of the velocity accelerator pipe (146). It is provided in a spiral shape between the guide member (147a), the inner tube (147b) formed in the central area of the vortex former 147, and the plurality of external guide members (147a) to direct the cleaning liquid (C) in a spiral shape to the central area. It is formed to surround the outside of the spiral inflow path (147c) and the spiral inflow path (147c) and the inner tube (147b) for movement, so that the cleaning liquid (C) moved along the spiral inflow path (147c) is in the inner tube (147b). It includes a vortex forming furnace (147d) that rotates around the outside and discharges into the front cleaning fluid inlet pipe (145).

The cleaning liquid (C) discharged from the outlet (146b) flows into a path that rotates along a large rotation radius between the outer wall of the vortex former (147) and the plurality of external guide members (147a) and then flows through the spiral inflow path (147c). It moves in a spiral shape. Then, a vortex is formed by rotating along a small rotation radius along the vortex forming path 147d.

The washing liquid (C) in which the vortex is formed in this way is supplied to the solution syringe (130) through the washing liquid inlet pipe (145) and then through the selective inflow pipe (143). Then, as shown in (a) of FIG. 8, the solution syringe 130 and the dispensing nozzle 120 are cleaned and discharged to the outside.

The path control valve 150 controls the air inlet pipe 144 and the cleaning liquid inlet pipe 145 to selectively supply air (A) or cleaning liquid (C) to the selective inflow pipe 143 under the control of the control unit 160. Adjust the path.

Figures 6 (a) and (b) are illustrations showing an example of the path control valve 150 of the present invention. As shown, the path control valve 150 is operated by an electrical signal from the control unit 160. The path control valve 150 moves up and down inside the connection pipe 151, which connects the selection inflow pipe 143, the air inflow pipe 144, and the cleaning liquid inflow pipe 145, and moves the inside of the connection pipe 151 to air. A path control member 153 that opens and closes the inlet pipe 144 and the cleaning liquid inlet pipe 145, and a path control valve body 155 that moves the path control member 153 up and down by a control signal from the control unit 160. Includes.

The connection pipe 151 is provided in communication with the selective inflow pipe 143 between the air inlet pipe inlet 144a of the air inlet pipe 144 and the cleaning liquid inlet pipe inlet 145a of the cleaning liquid inlet pipe 145.

The path control member 153 is lowered by the path control valve body 155 as shown in (a) of FIG. 6 to block the cleaning liquid inlet pipe inlet 145a and open the air inlet pipe inlet 144a to allow air inflow. Air (A) is moved to the selective inflow pipe (143) through the pipe (144). In addition, the path control member 153 rises as shown in (b) of FIG. 6 to block the air inlet pipe inlet 144a and opens the cleaning liquid inlet pipe inlet 145a so that the cleaning liquid C flows into the selective inlet pipe ( 143).

The path control valve body 155 moves the path control member 153 up and down in response to a control signal from the control unit 160 to open either the air inlet pipe 144 or the cleaning liquid inlet pipe 145.

Here, the path control valve 150 according to a preferred embodiment of the present invention operates with the path control member 153 moving up and down, but in some cases, various types of three-way valves, including a type that rotates in the form of a ball valve, may be used. You can.

Here, the solution storage tank 200, compressor 300, and cleaning liquid storage tank 400 are fixedly coupled to the main body frame 60 separately from the dispensing head 20 (see FIG. 1). It is preferable that the solution storage tank 200, compressor 300, and cleaning liquid storage tank 400 are provided on the main body frame 60 with a fixed position rather than the dispensing head 20 transported by the head driving unit 30.

The solution storage tank 200, the compressor 300, and the cleaning liquid storage tank 400 collect solution (F), air (A), and cleaning liquid (C) through the chemical supply pipe 210, the air supply pipe 310, and the cleaning liquid supply pipe 440. supply.

The cleaning liquid storage tank 400 supplies the internal cleaning liquid (C) to the cleaning liquid supply pipe 440 using the cleaning liquid pump 430. At this time, the cleaning liquid (C) can be heated in the cleaning liquid storage tank (400) to increase the temperature of the cleaning liquid (C) and then supplied to the cleaning liquid supply pipe (440). For this purpose, as shown in FIG. 4, a cleaning liquid heater 420 may be built into the storage tank body 410 of the cleaning liquid storage tank 400.

When a washing signal is applied from the washing signal application unit 161, the control unit 160 operates the washing liquid heater 420 to heat the washing liquid C and then supply it.

The control unit 160 supplies the solution (F) to the solution syringe 130 according to a preset order and supplies air (A) to inject the solution (F) into the object. Then, when the cleaning signal is applied from the cleaning signal application unit 161 after the injection of the solution into the object is completed, the cleaning liquid (C) is supplied and the remaining solution (F) inside the solution syringe (130) and the dispensing nozzle (120) is removed. Let it be washed.

To this end, the control unit 160 controls the first on-off valve 142a, the second on-off valve 143a, and the path control valve 150, as shown in FIG. 5. And, when the washing signal is applied, power is supplied to operate the washing liquid heater 420 and the washing liquid pump 430.

The washing signal application unit 161 may be provided in the form of a button on the main body frame 60 or implemented as a remote control.

The operation process of the dispensing valve 100 according to the present invention having this configuration will be described with reference to FIGS. 3 to 8.

When the object M is loaded on the base 10 of the dispensing device 1, the dispensing head 20 is moved to the top of the object M by the head driving unit 30.

Then, the control unit 160 supplies a solution (F) equivalent to the volume of the solution (F) to be injected into the object (M) using the solution syringe (130). To this end, the control unit 160 opens the first on-off valve 142a and closes the second on-off valve 143a, as shown in (a) of FIG. 7.

The solution (F) from the solution storage tank (200) is filled into the solution syringe (130) through the solution inlet pipe (142). At this time, the discharge nozzle 123 of the dispensing nozzle 120 is maintained in a closed state by the nozzle opening/closing valve 115.

When the filling of the fixed amount of solution (F) is completed, the control unit 160 causes the path control valve 150 to open the air inlet pipe 144 and open the cleaning liquid inlet pipe 145, as shown in (a) of FIG. Control to close. And, as shown in (b) of FIG. 7, the first on-off valve 142a is closed and the second on-off valve 143a is open. At the same time, the control unit 160 controls the nozzle opening/closing valve 115 to open the discharge nozzle 123.

As a result, air (A) is supplied to the top of the solution (F), and the solution (F) is pushed by pneumatic pressure and supplied to the dispensing nozzle 120, and is injected into the object M through the discharge nozzle 123.

When all of the solution F of the solution syringe 130 is injected into the object M, the control unit 160 closes the air inlet pipe 144 with the path control valve 150 as shown in (b) of FIG. 6. The cleaning liquid inlet pipe 145 is controlled to be open.

As shown in (a) of FIG. 8, the nozzle opening/closing valve 115 remains open. The washing liquid (C) heated in the washing liquid storage tank (400) is accelerated in the velocity acceleration pipe (146) and then flows into the selective inflow pipe (143) with a vortex formed in the vortex former (147). Then, it passes through the inside of the solution syringe 130, cleans the inner wall of the solution syringe 130, and flows into the dispensing nozzle 120.

The cleaning liquid (C) moves along the dispensing nozzle 120, cleans the solution (F) remaining in the solution inlet 121, the solution movement path 122, and the discharge nozzle 123, and is discharged through the discharge nozzle 123. is discharged to the outside.

When the supply of the washing liquid (C) is completed, as shown in (b) of FIG. 8, both the first opening and closing valve (142a) and the second opening and closing valve (143a) are closed and all the washing liquid (C) inside is discharged to the outside. to be discharged. This completes the washing process.

If the solution (F) needs to be injected into another object in the future, the previous process is repeated.

As discussed above, the dispensing valve according to the present invention can automatically clean the solution remaining in the dispensing nozzle by supplying the cleaning solution to the dispensing nozzle through a solution syringe after solution injection is completed.

This has the advantage of being able to clean the dispensing nozzle without disassembling the dispensing valve.

In addition, since cleaning is performed by heating the cleaning solution and forming a vortex, it is effective in cleaning the product as cleanly as if the worker cleaned it manually.

The embodiments of the self-cleaning dispensing valve of the present invention described above are merely illustrative, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. You will be able to understand the point well. Therefore, it will be understood that the present invention is not limited to the forms mentioned in the detailed description above. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims. In addition, the present invention should be understood to include all modifications, equivalents and substitutes within the spirit and scope of the present invention as defined by the appended claims.

1: Dispensing device 10: Base
20: Dispensing head 30: Head driving unit
40: dispensing valve 41: valve body
43: dispensing nozzle 43a: inlet
43b: Discharge port 50: Solution syringe
60: main body frame 100: dispensing valve
110: valve body 111: data line
113: Control line 115: Nozzle opening/closing valve
115a: Nozzle opening/closing member 120: Dispensing nozzle
121: solution inlet 122: solution movement path
123: Discharge nozzle 130: Solution syringe
140: Syringe head 141: Head body
142: Solution inlet pipe 142a: First opening/closing valve
143: Selective inflow pipe 143a: Second opening/closing valve
144: air inlet pipe 144a: air supply pipe inlet
145: Cleaning liquid inlet pipe 145a: Cleaning liquid supply pipe inlet
146: Speed acceleration pipe 146a: Inlet
146b: outlet 147: vortex former
147a: External guide member 147b: Internal tube
147c: Spiral inflow path 147d: Vortex formation path
150: Path control valve 151: Connector
153: Path control member 155: Path control valve body
160: Control unit 161: Washing signal application unit
200: Chemical storage tank 210: Chemical supply pipe
300: Compressor 310: Air supply pipe
400: Washing liquid storage tank 410: Storage tank body
420: Heater 430: Washing liquid pump
440: Cleaning liquid supply pipe
A: air
C: Washing liquid
F: solution

Claims (4)

In the self-cleaning dispensing valve that injects a solution into an object,
A solution inlet 121 that receives the solution from the solution syringe 130, a discharge nozzle 123 that discharges the solution to the object, and a solution moving path 122 connecting the solution inlet 121 and the discharge nozzle 123. A dispensing nozzle 120 is formed;
a valve body 110 provided on an upper portion of the dispensing nozzle 120 and opening and closing the discharge nozzle 123 of the dispensing nozzle 120;
a solution syringe (130) located in parallel with the valve body (110) above the dispensing nozzle (120) and supplying a solution to the solution inlet (121);
A solution provided at the top of the solution syringe 130, air supplied to the top of the solution to apply pressure so that the solution is discharged through the discharge nozzle 123, and the solution syringe 130. It includes a syringe head 140 that supports selective supply of one of the cleaning solutions for cleaning the solution remaining inside the dispensing valve 100 after all of the internal solutions are discharged,
The syringe head 140,
A head body 141 coupled to the upper part of the solution syringe 130;
a solution inlet pipe 142 extending from the upper part of the head body 141 and connected to the solution storage tank 200, and having a first opening/closing valve 142a in a coupling area with the head body 141;
a selective inflow pipe (143) extending from the side of the head body (141) through which air or cleaning liquid is selectively introduced, and having a second opening/closing valve (143a) in a coupling area with the head body (141);
an air inflow pipe (144) branched at the end of the selective inflow pipe (143) and connected to the compressor (300) to receive air supply;
At the end of the selective inflow pipe 143, there is a cleaning liquid inflow pipe 145 extending coaxially with the selective inflow pipe 143 and receiving the washing liquid from the washing liquid storage tank 400,
It is provided in the connection area between the selective inflow pipe 143, the air inlet pipe 144, and the cleaning liquid inlet pipe 145 to adjust the path so that either air or cleaning liquid is supplied to the selective inflow pipe 143. A path control valve (150);
a washing signal application unit 161 that receives a washing signal;
When a cleaning signal is applied from the cleaning signal application unit 161, the first on/off valve (142a) closes, the second on/off valve (143a) opens, and the path control valve (150) opens the air supply pipe (310). After the cleaning liquid is supplied to the solution syringe 130, it further includes a control unit 160 that controls cleaning of the solution (F) remaining in the solution movement path 122 of the dispensing nozzle 120. Dispensing valve capable of self-cleaning.
delete According to paragraph 1,
A vortex former is provided on the pipe of the cleaning liquid inlet pipe 145 connected to the path control valve 150 and causes a vortex to be formed in the cleaning liquid moving from the cleaning liquid inlet pipe 145 to the path control valve 150. A self-cleaning dispensing valve further comprising (147).
According to paragraph 3,
It further includes a speed acceleration tube 146 that is connected to the vortex former 147 and increases the moving speed of the cleaning liquid supplied to the vortex former 147,
The velocity acceleration pipe (146) is a self-cleaning dispensing valve, characterized in that the pipe of the outlet (146b) connected to the vortex former (147) is narrower than the pipe of the inlet (146a).

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