JP2021053335A - Liquid agent feeding device - Google Patents

Abstract

To provide a liquid agent feeding device capable of switching states between a liquid agent feeding state and a liquid agent cleaning state without using a switching electromagnetic valve for a liquid agent for solving a problem that additionally providing a switching electromagnetic valve for a liquid agent makes an arrangement configuration of an electromagnetic valve complicated.SOLUTION: A liquid agent feeding device comprises a pump for transferring a liquid agent and a cleaning water supply valve for supplying water for cleaning the pump and comprises an electric motor that drives the pump and drives the cleaning water supply valve to open and close. The pump comprises a cylinder and a piston which reciprocally moves in the cylinder by drive of the electric motor to suck/discharge a liquid agent. The cleaning water supply valve comprises a valve seat with a water outlet and a valve body which reciprocally moves by drive of the electric motor and opens and closes the water outlet of the valve seat to supply/stop water for cleaning the pump.SELECTED DRAWING: Figure 7

Description

The present invention relates to a liquid agent charging device including a liquid detergent charging device for a washing machine, a liquid softener charging device for a washing machine, a liquid detergent charging device for a dishwasher, and the like.

The liquid agent charging device is used for charging liquid agents in washing machines, dishwashers, and the like. If the liquid agent remains or adheres to the flow path of the liquid agent charging device, it solidifies and causes clogging. In order to solve this problem, after the operation of the pump for charging the liquid agent, tap water is flowed inside the pump and in the flow path through which the liquid agent flows, and the liquid agent remaining or adhering to the tap water is washed away and washed.

Japanese Unexamined Patent Publication No. 2019-37357

In the liquid agent charging device described in Document 1 above, the detergent side three-way valve is driven by the detergent side plunger and the detergent coil, that is, a so-called electromagnetic three-way valve is used to switch between charging the liquid agent and cleaning the liquid agent. I am doing it. The washing machine is equipped with various solenoid valves such as tap water, hot water, bath water, detergent dissolver, etc., and adding a switching solenoid valve for liquid agent on top of it makes it possible to arrange the solenoid valves. There is the problem of complexity.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide a liquid agent charging device capable of switching between charging of a liquid agent and cleaning of a liquid agent without using a switching solenoid valve for the liquid agent.

The present invention has a pump for transferring a liquid agent and a cleaning water supply valve for supplying water for cleaning the pump, and includes an electric motor for driving the pump and opening and closing the cleaning water supply valve. It is a loading device.

According to the present invention, it is possible to provide a liquid agent charging device capable of switching between charging of a liquid agent and cleaning of a liquid agent without using a switching solenoid valve for the liquid agent.

It is external perspective view of the liquid agent addition device which concerns on this embodiment. It is a rear view of the liquid agent charging device which concerns on this embodiment. It is a top view of the liquid agent charging device which concerns on this embodiment. FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is a front view of the liquid agent charging device which concerns on this embodiment. It is a figure BB of FIG. It is an exploded perspective view of the liquid agent charging device which concerns on this embodiment. It is a figure which shows the closed state of the cleaning water supply valve provided in the liquid agent input device which concerns on this embodiment. It is a figure which shows the open state of the cleaning water supply valve provided in the liquid agent input device which concerns on this embodiment. It is a figure which shows the cam crank disk provided in the liquid agent charging device which concerns on this embodiment. It is an enlarged view of the check valve which concerns on this embodiment. It is a figure which shows the control circuit of the washing machine which concerns on this embodiment. It is a schematic system diagram which applied the liquid agent charging device which concerns on this embodiment to a washing machine. It is a figure which shows the operation flow of the liquid agent addition device which concerns on this embodiment of FIG.

This will be described with reference to FIGS. 1 to 7. The liquid agent charging device according to the present embodiment includes a main body case 1, a pump 2, a cleaning water supply valve 3, an electric motor 4, a cam crank disk 5, a cam switch 6, a liquid tank connection port 7, and a tap water supply connection port frame. It has a part 8. The water supply connection port frame portion 8 constitutes a part of the cleaning water supply valve 3 as described later. The pump 2 has a cylinder 2a and a piston 2b. The cylinder 2a has a suction port 2a1 and a discharge port 2a2 at the opposite end where the piston 2b is inserted, and two support legs 2a3 on the side surface. The cylinder 2a is attached to the main body case 1 via the support legs 2a3, and is screwed to the main body case 1 with screws 2a4.

The piston 2b of the pump 2 is inserted into the cylinder 2a. The pump 2 operates by the reciprocating movement of the piston 2b in the cylinder 2a. The piston 2b is equipped with two seal rings 2b1 on the outer circumference. The piston 2b has a support arm 2b2 extending rearward because the seal ring 2b1 is attached, and has a guide member 2b4 having a long groove 2b3 at the tip thereof. The long groove 2b3 of the guide member 2b4 constitutes a crank mechanism described later. Since the piston 2b is equipped with the seal ring 2b1, the airtightness is good, and the pump 2 keeps the pump function well.

The tap water supply connection port frame portion 8 has a water supply connection port 8a and a valve seat 8b as shown in FIGS. 4, 7, 8 and 9. The water outlet 8c in the center of the valve seat 8b communicates with the inner flow passage of the water supply connection port 8a. The cleaning water supply valve 3 has a valve body 3a, and the cleaning water supply valve 3 is composed of the valve body 3a and the valve seat 8b. The valve body 3a abuts on the valve seat 8b to close the water outlet 8c, the valve body 3a separates from the valve seat 8b to open the water outlet 8c, and the cleaning water supply valve 3 is opened and closed.

The valve body 3a has a diaphragm 3a1, a support rod 3a2, and a push spring 3a3. The diaphragm 3a1 has a raised portion 3a4 in the center, and the raised portion 3a4 contacts and separates from the valve seat 8b to open and close the water outlet 8c. The support rod 3a2 has a disk 3a5 on the tip side, and a protrusion 3a6 having a constriction at the base in the center of the disk 3a5. The protrusions 3a6 fit into a recess on the directly back side of the raised portion 3a4 of the diaphragm 3a1. This recess also has a protrusion that fits into the constriction of the protrusion 3a5, and by mutual fitting, the diaphragm 3a1 and the support rod 3a2 become one that cannot be easily separated. The diaphragm 3a1 is urged by the push spring 3a3 so as to be pressed against the valve seat 8b. There is a cam protrusion 3a7 on the rear end side of the support rod 3a2, and as will be described later, the cam protrusion 3a7 is slidably engaged with the cam.

The valve body holding cover 3b has a spring receiving bottom 3b1 inside, a through hole 3b2 for a support rod in the center of the spring receiving bottom 3b1, and a plurality of mounting legs 3b3 on the outer circumference. The valve body holding cover 3b is fixed by accommodating the valve body 3a inside and screwing the screw 3b4 passed through the mounting leg 3b3 to the water supply connection port frame portion 8 of tap water. The cam protrusion 3a7 on the rear end side of the valve body 3a is placed in a state of protruding from the support rod through hole 3b2 to the outside of the valve body holding cover 3b. The cam protrusions 3a7 are slidably engaged with the cam, as will be described later. In this way, the tap water supply connection port frame portion 8 to which the valve body 3a, the push spring 3a3, the valve body holding cover 3b and the like are attached is attached to the main body case 1 and screwed with the screw 8f.

The electric motor 4 is attached to the back side of the main body case 1 as shown in FIGS. 7, 2 and 6, and is screwed with screws 4a. The electric motor 4 has a deceleration mechanism 4b that decelerates the rotation of the rotor, and an output shaft 4c that outputs the decelerated rotation. As shown in FIGS. 8, 9, and 6, the output shaft 4c is placed in a state of protruding outward from the shaft penetrating cylinder portion 1a provided in the main body case 1.

The cam crank disc 5 is shown in FIGS. 1, 4, 5, 6, 6, 7, 8, 9, and 10. FIG. 10 is a view of the cam crank disc 5 as viewed from the rear side. The cam crank disc 5 has a ring-shaped cam body 5a on the outer peripheral side. The cam body 5a protrudes toward the back surface of the cam crank disc 5. The cam crank disc 5 shown in FIGS. 8 and 9 shows only a portion of the ring-shaped cam body 5a. The cam crank disc 5 is attached to the output shaft 4c and screwed with the screw 5b. Since the cam crank disc 5 and the output shaft 4c are fitted when they are cut flat, the cam crank disc 5 is stopped by the output shaft 4c.

The cam crank disc 5 has a switch cam 5c and a crank eccentric shaft protrusion 5d on the front side corresponding to the opposite side of the cam body 5a. As shown in FIG. 10, the ring-shaped cam body 5a has a range on the minor axis side of 90 °. The range on the major axis side of the switch cam 5c is 90 °. The crank eccentric shaft protrusion 5d is located 90 ° in the counterclockwise direction from the right end of the switch cam 5c. A cam protrusion 3a7 is slidably engaged with the inner peripheral surface of the ring-shaped cam body 5a. The crank eccentric shaft protrusion 5d is slidably engaged with the long groove 2b3. Since the ring-shaped cam body 5a and the cam projection 3a7 provided on the cam crank disc 5 are slidably engaged with each other, the valve body 3a is moved as the cam crank disc 5 rotates. Since the crank eccentric shaft protrusion 5d is slidably engaged with the long groove 2b3, the piston 2b is moved with the rotation of the cam crank disk 5.

The cam switch 6 has a movable lever 6a as shown in FIGS. 7, 1, 4, and 5. The cam switch 6 has a built-in micro switch, and the micro switch is turned on / off by moving the movable lever 6a. The cam switch 6 is attached to the main body case 1, and the movable lever 6a is located at a position facing the outer circumference of the switch cam 5c. The cam crank disc 5 is driven by the electric motor 4 to rotate. When the movable lever 6a is pushed by the switch cam 5c due to the rotation of the cam crank disk 5, the micro switch is turned on, and when the switch cam 5c is separated from the movable lever 6a, the micro switch is turned off.

As shown in FIG. 9, when the cam projection 3a7 of the valve body 3a is in sliding contact with the minor axis side range of the ring-shaped cam body 5a due to the rotation of the cam crank disk 5, the valve body 3a has a push spring 3a3. It is pulled down against. The valve body 3a of the cleaning water supply valve 3 is separated from the valve seat 8b and the water outlet 8c is opened, so that tap water can flow from the upstream to the downstream of the cleaning water supply valve 3.
As shown in FIG. 8, the valve body 3a is pushed by the push spring 3a3 and pushed upward except for the minor axis side range of the cam body 5a. The valve body 3a of the cleaning water supply valve 3 comes into contact with the valve seat 8b, the water outlet 8c is closed, and the cleaning water supply valve 3 stops the flow from upstream to downstream. The cam mechanism composed of the ring-shaped cam body 5a and the cam projection 3a7 of the valve body 3a changes the rotational motion of the electric motor 4 into a reciprocating motion in which the valve body 3a moves up and down, so that the rotary motion and reciprocating motion are performed. It becomes a means of motion conversion.

Due to the rotation of the cam crank disc 5, the crank eccentric shaft protrusion 5d rotates around the rotation axis of the cam crank disc 5. Since the crank eccentric shaft protrusion 5d is slidably engaged with the long groove 2b3 on the piston 2b side, the piston 2b of the pump 2 moves into the cylinder 2a due to the crank motion action due to the turning of the crank eccentric shaft protrusion 5d. Move back and forth. The crank mechanism composed of the crank eccentric shaft protrusion 5d and the long groove 2b3 changes the rotary motion of the electric motor 4 into the reciprocating motion of the piston 2b of the pump 2, and thus serves as a rotary motion / reciprocating motion conversion means.

As described above, the reciprocating motion of the piston 2b of the pump 2 and the reciprocating motion of the valve body 3a of the cleaning water supply valve 3 are performed by the rotation of the electric motor 4. Since the electric motor 4 also drives the pump 2 and the cleaning water supply valve 3, it is possible to switch between charging the liquid agent and cleaning the liquid agent without using a switching solenoid valve for the cleaning water supply valve. Can be done. By reducing the number of switching solenoid valves that are no longer needed, the complexity of the solenoid valve layout has been eliminated. Further, in the cam mechanism for driving the cleaning water supply valve 3, a ring-shaped cam body 5a is provided on the cam crank disk 5 for operating the pump 2, and a cam protrusion 3a7 sliding in contact with the cam body 5a is provided on the valve body 3a. Productivity is good because it has a very simple structure. Moreover, since the operation of the cleaning water supply valve 3 is a reciprocating motion in which the valve body 3a moves straight, stable opening and closing of the cleaning water supply valve 3 can be provided.

As shown in FIGS. 1 to 5 and 7 to 9, the liquid tank connection port 7 is attached to the support base port 10a provided in the main body case 1 by sandwiching the packing 10b, and is attached to the screw 7a. Is screwed. The connection port 7 of the liquid tank has a connection port 7b on the upper end side, and a detergent tank as shown in FIG. 13 is detachably attached to the connection port 7b. A seal ring 7c is attached to the outer periphery of the connection port 7b to prevent the liquid detergent supplied from the detergent tank from leaking to the outside of the connection port 7b.

As shown in FIGS. 3 and 7, the main body case 1 is provided so that the vertical flow path 10c and the horizontal flow path 10d intersect in a T shape, and both flow paths communicate with each other at the intersection. The upper end side of the vertical flow path 10c is the support base opening portion 10a described above, and the connection port portion 10a of the liquid tank communicates with the vertical flow path 10c and the horizontal flow path 10d. The tap water supply connection port frame portion 8 has a drainage connection port portion 8e. The tap water supply connection port frame portion 8 is attached to the main body case 1 by inserting the drainage connection port portion 8e into the lateral flow path 10d with the packing 10e sandwiched between them. The horizontal flow path 10d and the vertical flow path 10c of the main body case 1 communicate with the inner flow passages (water supply connection port 8a, water outlet 8c) of the water supply connection port frame portion 8.

As shown in FIGS. 3, 7 to 9, the pump 2 is attached to the main body case 1 by inserting the suction port 2a1 of the cylinder 2a into the lower end side of the vertical flow path 10c with the packing 10f sandwiched between them. In the pump 2, the cylinder 2a, the suction port 2a1, and the discharge port 2a2 pass through the horizontal flow path 10d and the vertical flow path 10c of the main body case 1 to the inner flow passage (water supply connection port 8a, water outlet) of the tap water supply connection port frame portion 8. Communicate with 8c). Tap water and liquid detergent are supplied to the pump 2 through this communicating flow path.

As shown in FIG. 11, the check valve 20 has a valve seat 20a, a valve body 20b, a support base 20c, and a spring 20d. Further, the valve body 20b has a valve rod 20a1, and the valve rod 20a1 is slidably supported by the support base 20c. Then, the valve body 20b is pressed against the valve seat 20a by the spring 20d arranged on the outer peripheral side of the valve rod 20a1, and the check valve 20 remains in the closed state. Since the seal ring 20e is mounted on the outer periphery of the valve body 20b, good watertightness is maintained in the closed state. The support base 20c has a flow groove hole 20f, from which tap water, detergent solution, etc. flow downstream.

The check valve 20 is arranged in the vertical flow path 10c, the suction port 2a1 of the pump 2, and the discharge port 2a2 of the pump 2. As shown in FIG. 4, the check valve 20 placed in the middle of the vertical flow path 10c is located on the downstream side of the seal ring 20e, at the valve rod 20a1 and the spring 20d, where the vertical flow path 10c and the horizontal flow path 10d intersect. It is located facing the club. Therefore, even if the check valve 20 is in the closed state, the inside of the check valve 20 is thoroughly washed with tap water flowing down from the horizontal flow path 10d to the vertical flow path 10c, and the check valve 20 is hardened by adhesion of a detergent solution or the like. The malfunction of is resolved.

The check valve 20 is arranged in opposite directions at the suction port 2a1 and the discharge port 2a2. When the pump 2 sucks, the check valve 20 on the suction port 2a1 side opens, and the check valve 20 on the discharge port 2a2 closes. When the pump 2 discharges, the check valve 20 of the discharge port 2a2 opens, and the check valve 20 on the suction port 2a1 side closes. By operating the pump 2 and the check valve 20, detergent liquid and the like are sucked and discharged, and the detergent liquid and the like flow inside the pump 2, the check valve 20 and the vertical flow path 10c, and the detergent liquid and the like flow inside them. Etc. adhere. The attached detergent solution or the like is washed with tap water flowing into the inside, and the malfunction of the pump 2 and the check valve 20 due to the adhesion hardening of the detergent solution or the like is eliminated.

An embodiment in which the liquid agent charging device is used in a washing machine will be described with reference to FIG. In this embodiment, a liquid agent charging device 30a for detergent and a liquid agent charging device 30b for softener are provided. Since both the liquid agent charging device 30a for detergent and the liquid agent charging device 30b for softener are the liquid agent charging devices described above, the components are designated by the same reference numerals. The detergent tank 30c has a check valve 30c1 and contains a detergent solution. The check valve 30c1 opens when the detergent tank 30c is set in the vertical flow path 10c on the detergent side, and closes when it is removed from the vertical flow path 10c on the detergent side. The softener tank 30d has a check valve 30d1 that opens when set in the vertical flow path 10c on the softener side and closes when removed from the vertical flow path 10c on the softener side.

The main water supply valve 30e communicates with the main water supply channel 30f. The main water supply valve 30e is an electromagnetic valve operated by an electromagnetic plunger. It is connected to the main water supply channel 30f so as to communicate with the lateral flow path 10d of the liquid agent charging device. The transverse flow path 10d communicates with both the liquid agent charging device 30a for detergent and the liquid agent charging device 30b for softener. The main water supply channel 30f has a branch flow path 30g in the middle, and this branch flow path 30g is connected to the washing tub 30h of the washing machine. The branch flow path 30g is provided with a manual detergent box 30i in front of the washing tub 30h. The tap water from the main water supply channel 30f is poured into the branch flow path 30 g and the lateral flow path 10d of the liquid agent charging device. The branch flow path 30g is opened to the atmosphere by the washing tub 30h and the manual detergent box 30i, and the main water supply channel 30f is also open to the atmosphere. Therefore, in the lateral flow path 10d, the space between the cleaning water supply valve 3 on the detergent side and the cleaning water supply valve 3 on the softener side is open to the atmosphere. A cleaning water supply valve 3 is provided in the horizontal flow path 10d that is open to the atmosphere, the cleaning water supply valve 3 is closed when the pump 2 is sucked in, and the flow path from the pump 2 to the vertical flow path 10c and the horizontal flow path 10d is cut off from the open to the atmosphere. I did it. As a result, when the pump 2 is sucked, the flow paths from the pump 2 to the vertical flow path 10c and the horizontal flow path 10d become negative pressure, and the detergent and the softener can be sucked.

The two liquid agent charging devices do not operate together. When the liquid agent charging device 30a side for detergent is operated, the operation of the liquid agent charging device 30b side for softener is stopped. Therefore, the pump 2 on the liquid agent charging device 30a side for detergent and the pump 2 on the liquid agent charging device 30b side for softener may operate at the same time to supply the detergent and the softener together to the washing tub 30h. Absent. Further, since both the washing water supply valves 3 are not opened at the same time, the washing water in which the detergent has been washed away and the washing water in which the softener has been washed away do not mix in the washing tub 30h. In the embodiment shown in FIG. 13, a detergent tank and a softener are used, but a washing machine containing only detergent does not require a liquid agent charging device 30b for the softener. The liquid agent charging device can also be used in a dishwasher.

The operation control of the washing machine will be described with reference to FIG. The operation control device includes a control circuit unit 40a, an input circuit unit 40b, and an output circuit unit 40c made by a microcomputer. The input circuit unit 40b and the output circuit unit 40c exchange signals related to input / output with the control circuit unit 40a. A water level sensor 40b1, a cloth amount sensor 40b2, a cam switch 40b3, another input device 40b4, and the like are connected to the input circuit unit 40b. The other input device 40b4 includes a power switch, a start switch, a washing machine lid switch, a washing course selection switch, and the like. The cam switch 40b3 is the cam switch 6 described above. A main water supply valve 40c1, an electric motor 40c2 for a pump, another output device 40c3, and the like are connected to the output circuit unit 40c. The other output device 40c1 includes a washing electric motor, a drainage solenoid valve, a lid lock solenoid, an end buzzer, a display device, and the like. The main water supply valve 40c1 is the main water supply valve 30e described above. The electric motor 40c2 for the pump is the electric motor 4 described above.

To operate the washing machine, turn on the power switch, put the laundry in the washing tub, close the lid, and turn on the start switch to start washing. When washing is started, the amount of washing is measured by the cloth amount sensor. The amount of detergent, the amount of washing water, the washing time, and the like are calculated and determined by the control circuit unit 40a based on the washing measurement value. The washing operation according to the determined calculated value is executed. The liquid agent charging device described above supplies the washing machine with the calculated amount of detergent. The operation of the liquid agent charging device is operated with the main water supply valve 40c1, the electric motor 40c2 for the pump, the cam switch 40b3, etc. under the instruction of the control circuit unit 40a, and the washing agent is supplied to the washing tub 30h. Will be done.

Next, the operation of the pump will be described with reference to FIG. FIG. 14A shows the operating positions of the cleaning water supply valve, the cam crank disc, and the pump. (B) indicates on / off of the cam switch and opening / closing of the washing water supply valve. (C) also shows the suction / discharge process of the pump and the rotation angle position of the reciprocating piston. The valve closing stop position and the valve closing stop position described in (a) are the (closed / opened) stop positions of the cleaning water supply valve 3. The micro SW described in (b) is a micro switch of the cam switch 6. The opening and closing of the linear motion valve described in (b) is the closing and opening of the cleaning water supply valve 3.

As shown in FIG. 14, at the valve closing stop position, the piston position is at the bottom dead center at a rotation angle of 0 °, the cleaning water supply valve 3 (linear valve) is closed, and the micro SW is OFF. When the cam crank disk 5 rotates in the direction of the arrow from the valve closing stop position by driving the electric motor 4, the piston position rises while the cleaning water supply valve 3 (linear valve) is closed, so that the suction of the pump 2 starts and the piston position. The suction process in which the detergent is sucked up to a rotation angle of 180 ° at which the cam reaches top dead center is completed. The micro SW remains 0FF.

The position of the rotation angle of 180 ° is an intermediate point between the suction process and the discharge process. When the cam crank disk 5 is rotated in the direction of the arrow by driving the electric motor 4 from this intermediate point, the process shifts to the discharge process. When the cam crank disc 5 starts to rotate, the piston position gradually lowers, but the cleaning water supply valve 3 (linear valve) remains closed. When the rotation angle reaches 225 °, the cleaning water supply valve 3 (linear valve) opens. The micro SW at 0FF switches to ON at the position of the rotation angle of 270 °. The operation control device described above receives this ON signal to stop the electric motor 4 driving the cam crank disk 5 and open the main water supply valve 30e. When the main water supply valve 30e is opened, tap water flows through the main water supply channel 30f described above, passes through the open cleaning water supply valve 3 (linear valve), and flows into the pump 2 via the check valve 20 described above. Then, tap water flows into the washing tub 30h described above through the check valve 20 on the discharge port 2a2 side of the pump 2. Along with this tap water, the detergents in the pump 2, the vertical flow path 10c, the three check valves 20, the suction port 2a1 and the discharge port 2a2 are washed away and enter the washing tub 30h.

At the valve opening stop position where the electric motor 4 is stopped and the washing water supply valve 3 (linear valve) is open, tap water is continuously injected into the washing tub 30h as long as the main water supply valve 30e is open. Even in this water injection, tap water continues to flow inside the pump 2, the vertical flow path 10c, the three check valves 20, the suction port 2a1, and the discharge port 2a2, and the detergent adhering to the inside is washed away to perform good cleaning. .. When the water level of the washing tub 30h reaches the calculated value described above, it is detected by the water level sensor 40b1 described above. Upon this detection, the control device closes the main water supply valve 30e to stop the water supply and restart the operation of the electric motor 4 that drives the crank disk 5. When the rotation angle of the crank disk 5 in the arrow direction reaches 315 °, the cleaning water supply valve 3 (linear valve) closes, but since the micro SW is ON, the operation of the electric motor 4 continues. When the rotation angle reaches 360 °, the micro SW is switched to OFF. The control device detects this OFF signal, stops the electric motor 4, and ends the discharge process. The end point of the discharge process is also the start point of the suction process.

1 Main body case 2 Pump 2a Cylinder 2a1 Suction port 2a2 Discharge port 2a3 Support leg 2a4 Screw 2b Piston 2b1 Seal ring 2b2 Indicator arm 2b3 Long groove 2b4 Guide member 3 Washing water supply valve 3a Valve body 3a1 Diaphragm 3a2 Support Spring 3a4 Raised part 3a5 Disc 3a6 Protrusion 3a7 Cam protrusion 3b Valve body holding cover 3b1 Spring receiving bottom 3b2 Through hole for support rod 3b3 Mounting leg 3b4 Screw 4 Electric motor 4a Screw 4b Deceleration mechanism 4c Output shaft 5 Cam crank disk 5a Cam body 5b Screw 5c Switch cam 5d Crank eccentric shaft protrusion 6 Cam switch 6a Movable lever 7 Liquid tank connection port 7a Screw 7b Connection port 7c Seal ring 8 Tap water supply connection port Frame part 8a Water supply connection port 8b Valve seat 8c Water outlet 8d Drainage connection port 8f screw

Claims (6)

It has a pump for transferring liquid agent and a cleaning water supply valve for supplying water for cleaning the pump.
A liquid agent charging device comprising an electric motor that also drives the pump and opens / closes the cleaning water supply valve. In the liquid agent charging device according to claim 1,
The pump has a cylinder and a piston that reciprocates in the cylinder by driving the electric motor to suck and discharge the liquid agent.
The washing water supply valve is a valve body that supplies and stops water for washing the pump by reciprocating with a valve seat having a water outlet and opening and closing the water outlet of the valve seat by driving the electric motor. A liquid agent injection device characterized by having. In the liquid agent charging device according to claim 2,
A rotary motion / reciprocating motion conversion means for converting the rotary motion of the electric motor into a reciprocating motion is provided.
The rotary motion / reciprocating motion conversion means intervenes in the drive of the pump and the transmission of the driving force from the electric motor to the water supply valve.
The rotary motion / reciprocating motion conversion means is a liquid agent charging device including a crank mechanism and a cam mechanism. In the liquid agent charging device according to claim 3,
The crank mechanism is used to drive the piston of the pump.
The cam mechanism is a liquid agent charging device characterized in that it is used to drive the valve body of the water supply valve. (Reducing mechanism of electric motor)
In the liquid agent charging device according to claim 1,
A deceleration mechanism for decelerating and outputting the rotation of the electric motor is provided.
A liquid agent charging device, characterized in that the driving of the pump and the transmission of the driving force from the electric motor to the cleaning water supply valve are performed via the speed reduction mechanism. In the liquid agent charging device according to claim 4,
The deceleration mechanism that intervenes in the driving of the pump and the transmission of the driving force from the electric motor to the washing water supply valve has an output shaft that decelerates and outputs the rotation of the electric motor.
The crank mechanism has a crank body and has a crank body.
The cam mechanism has a cam body and has a cam body.
A liquid agent charging device characterized in that the crank body and the cam body are supported on the output shaft.

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