Automatic liquid feeding mechanism with liquid level detection function

Abstract

An automatic liquid feeding mechanism with a liquid level detection function comprises a liquid storage tank installed on a door plate, a liquid feeding box installed below the liquid storage tank, an insertion hole formed in the bottom of the liquid storage tank, a floating ball valve inserted in the insertion hole, the floating ball valve comprises a valve body, a long-strip-shaped valve cavity is formed in the upper end of the valve body, and a liquid level detection device is arranged in the long-strip-shaped valve cavity. A floating ball is movably embedded in the valve cavity, a magnet is placed above the floating ball, a magnetic switch is further arranged on the side wall of the liquid storage tank, the floating ball can drive the magnet to float upwards to the top end of the valve cavity, and the magnetic switch is switched on after the magnet approaches. The liquid level detection device can detect the liquid level of the cleaning liquid in the liquid storage tank, when the cleaning liquid in the liquid storage tank is sufficient, the magnetic switch is in a conducting state, and when the cleaning liquid in the liquid storage tank is insufficient, the magnet cannot float upwards, and the magnetic switch is always in an off state. The automatic liquid feeding device has the advantages of simple structure, convenience in operation and low cost and is suitable for various automatic liquid feeding mechanisms.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of accessories of dish washer, specifically a kind of automatic liquid injection mechanism with liquid level detection function for dish washer. BACKGROUND

[0002] Dish washer is a very practical cleaning tool, it can effectively remove dirt and bacteria inside dish washer, so as to ensure the health and cleanliness of tableware. The automatic liquid injection mechanism of dish washer on the market currently all does not have liquid level detection function, and it will not remind when cleaning liquid is insufficient, and it often appears that tableware cannot be cleaned due to insufficient cleaning liquid.

[0003] The patent office has disclosed a functional combination device of sink dishwasher on May 31, 2019, and the patent number is 201820934182.3. A magnetic reed switch with a float is arranged in the washing liquid box for detecting the liquid level of the washing liquid. The liquid adding box is arranged above the washing liquid box, and the washing liquid is injected into the washing liquid box through the liquid adding box. The water inlet flow control assembly includes a water inlet pipe, a flow meter and a water inlet electric valve. The first end of the water inlet pipe is connected to the water inlet electric valve, and the second end of the water inlet pipe is connected to the liquid adding box. The connection between the liquid adding box and the water inlet pipe is provided with a flow meter. The overflow protection box is arranged above the washing liquid box. This device only describes the installation of the magnetic reed switch with the float, and the installation of the magnetic reed switch in the washing liquid box is not described in the specification, so it is difficult to implement. SUMMARY

[0004] The utility model aims at the defects and deficiencies of the prior art, and provides an automatic liquid injection mechanism with liquid level detection function that can automatically detect whether there is enough cleaning liquid in the liquid storage tank, for liquid injection of dish washer.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows: the automatic liquid injection mechanism with liquid level detection function includes a liquid storage tank installed on the door panel, a liquid injection box installed below the liquid storage tank, an automatic liquid injection module installed between the liquid storage tank and the liquid injection box, and the automatic liquid injection module can automatically and quantitatively transfer the cleaning liquid in the liquid storage tank to the liquid injection box. A jack is provided at the bottom of the liquid storage tank, and a float ball valve is inserted in the jack. The float ball valve includes a valve body, a long strip-shaped valve cavity is arranged inside the upper end of the valve body, a float ball is movably embedded in the valve cavity, a magnet is placed above the float ball, a liquid inlet groove is formed in the side wall of the valve body and communicates with the valve cavity. The side wall of the liquid storage tank is also provided with an inwardly recessed switch insertion slot above the float ball valve, a magnetic switch is installed in the switch insertion slot, and the cleaning liquid in the liquid storage tank enters the valve cavity through the liquid inlet groove. The float ball will float to the top end of the valve cavity with the magnet, and the magnetic switch will be turned on when the magnet is close.

[0006] The magnetic switch is a dry reed switch or a Hall switch.

[0007] The liquid inlet grooves on the valve body are provided with two, respectively located on both sides of the valve cavity.

[0008] The bottom of the jack is provided with a mounting ring, two L-shaped grooves are formed in the mounting ring, the outer wall of the valve body is provided with two protruding pins, the protruding pins are inserted into the L-shaped grooves and then rotated, and the float ball valve and the mounting ring can be fixed by the protruding pins.

[0009] The bottom of the float ball valve is provided with a hand screw head, and the outer wall of the hand screw head is provided with knurling.

[0010] The side wall of the valve body is provided with an annular embedding groove, a sealing ring is mounted in the annular embedding groove, and the sealing ring is attached to the inner wall of the mounting ring after the float ball valve is inserted into the jack.

[0011] The automatic liquid injection module comprises a liquid injection valve and a motor, a liquid inlet communicating with an upper liquid storage tank is arranged at the front end of the liquid injection valve, a liquid outlet communicating with a liquid injection box is arranged at the rear end side of the liquid injection valve, a piston valve assembly is mounted in the liquid injection valve, a driving rod capable of driving the piston valve assembly to move forward and backward is mounted at the rear end of the liquid injection valve, the front end of the driving rod is connected with the piston valve assembly, and a transverse long groove is arranged at the rear end of the driving rod, the motor output end is provided with a driving gear and a driven gear, the driving gear and the driven gear are provided with a speed reduction gear set, an eccentric shaft is arranged on the driven gear, the eccentric shaft is movably inserted into the transverse long groove, and through cooperation of the eccentric shaft and the transverse long groove, the rotary motion of the driven gear can be converted into the forward and backward reciprocating motion of the driving rod.

[0012] The motor is a 12-volt motor.

[0013] The utility model discloses a liquid level detection for the cleaning liquid in the liquid storage tank, when there is enough cleaning liquid in the liquid storage tank, the magnetic switch is in the on state, when the cleaning liquid in the liquid storage tank is insufficient, the magnet cannot float, and the magnetic switch is always in the off state. Because the cleaning liquid is relatively viscous, the cleaning liquid cannot fall to the bottom in time after the dishwasher door is closed, after installing the float ball valve and the magnetic switch, only when the cleaning liquid completely flows into the bottom of the liquid storage tank and the float ball floats, the magnetic switch will be turned on, and the automatic liquid injection operation can be carried out, so that air cannot enter the automatic liquid injection module. The utility model has the advantages of simple structure, convenient operation and low cost, and is suitable for various automatic liquid injection mechanisms. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is an installation structure sectional view of the magnetic switch and the float ball valve of the utility model.

[0016] Figure 3The utility model discloses a structure diagram of magnetic switch and float ball valve.

[0017] Figure 4 The utility model discloses a structure diagram of automatic liquid throwing module. Specific implementation

[0018] As Figure 1 , Figure 2 , Figure 3 The utility model discloses a kind of automatic liquid throwing mechanism with liquid level detection function, it includes the liquid storage tank 10 installed on door panel, liquid throwing box 50 is installed below the liquid storage tank 10, the liquid storage tank 10 is installed with automatic liquid throwing module 40 between liquid throwing box 50, the automatic liquid throwing module 40 can be automatically quantitative to the cleaning fluid in the liquid storage tank 10 is sent to liquid throwing box 50.

[0019] The bottom of the liquid storage tank 10 is provided with a jack 12, a float ball 32 valve 30 is inserted in the jack 12, the float ball 32 valve 30 includes a valve body 38, a long strip-shaped valve cavity 34 is arranged in the upper end of the valve body 38. A float ball 32 is movably embedded in the valve cavity 34, a magnet 33 is placed above the float ball 32, when the valve cavity 34 is filled with liquid, the float ball 32 can drive the magnet 33 to float to the top of the valve cavity 34, when the valve cavity 34 is empty, the float ball 32 and the magnet 33 fall back to the bottom of the valve cavity 34. The sidewall of the valve body 38 is provided with a liquid inlet groove 35 communicating with the valve cavity 34, and the cleaning liquid in the liquid storage tank 10 can enter the valve cavity 34 through the liquid inlet groove 35. The liquid inlet groove 35 on the valve body 38 is provided with two, which are located on both sides of the valve cavity 34.

[0020] The bottom of the jack 12 is provided with a mounting ring 13, two L-shaped grooves 14 are formed in the mounting ring 13, the outer wall of the valve body 38 is provided with two protruding pins 31, the protruding pins 31 are inserted into the L-shaped grooves 14 and rotated, which can fix the float ball 32 valve 30 and the mounting ring 13. The bottom of the float ball 32 valve 30 is provided with a hand screw head 36, and knurling is arranged on the outer wall of the hand screw head 36, which facilitates the rotation of the hand screw head 36. The sidewall of the valve body 38 is provided with an annular embedding groove 37, a sealing ring is installed in the annular embedding groove 37, and the sealing ring is attached to the inner wall of the mounting ring 13 after the float ball 32 valve 30 is inserted into the jack 12, so that the bottom of the jack 12 can be sealed after the float ball 32 valve 30 is installed, preventing liquid leakage.

[0021] The side wall of the liquid storage tank 10 is further provided with an inwardly recessed switch slot 11 above the float ball 32 valve 30, a magnetic switch 20 is installed in the switch slot 11, and the magnetic switch 20 is a dry reed or a Hall switch. When the float ball 32 and the magnet 33 are located at the bottom of the valve cavity 34, the magnetic switch 20 is in an off state. When the cleaning liquid in the liquid storage tank 10 enters the valve cavity 34 through the liquid inlet slot 35, the float ball 32 will float with the magnet 33 to the top end of the valve cavity 34, and the magnetic switch 20 will be in a conductive state when the magnet 33 is close.

[0022] The automatic liquid injection module 40 includes a liquid injection valve 41 and a motor 43, and the front end of the liquid injection valve 41 is provided with a liquid inlet connected with the upper liquid storage tank 10, and the rear end side of the liquid injection valve 41 is provided with a liquid outlet connected with the liquid injection box 50. A piston valve assembly is installed in the liquid injection valve 41, and a driving rod 42 for driving the piston valve assembly to move forward and backward is installed at the rear end of the liquid injection valve 41, the front end of the driving rod 42 is connected with the piston valve assembly, and a transverse long slot is provided at the rear end of the driving rod 42. The motor 43 is a 12-volt motor. A driving gear and a driven gear are provided at the output end of the motor 43, the driving gear and the driven gear are installed with a speed reduction gear set, an eccentric shaft is provided on the driven gear, the eccentric shaft is movably inserted into the transverse long slot, and through the cooperation of the eccentric shaft and the transverse long slot, the rotation of the driven gear can be converted into the forward and backward reciprocating motion of the driving rod 42.

[0023] The utility model can detect the liquid level of the cleaning liquid in the liquid storage tank 10, when there is enough cleaning liquid in the liquid storage tank 10, the magnetic switch 20 is in a conductive state, when the cleaning liquid in the liquid storage tank 10 is insufficient, the magnet 33 cannot float, and the magnetic switch 20 is always in an off state. Because the cleaning liquid is relatively viscous, the cleaning liquid cannot fall to the bottom in time after the dishwasher door is closed, after the float ball 32 valve 30 and the magnetic switch 20 are installed, only when the cleaning liquid completely flows into the bottom of the liquid storage tank 10 and the float ball 32 is floated, the magnetic switch 20 will be conductive, and the automatic liquid injection operation can be performed, so that air cannot enter the automatic liquid injection module 40. The utility model has the advantages of simple structure, convenient operation and low cost, and is suitable for various automatic liquid injection mechanisms.

Claims

1. An automatic liquid dispensing mechanism with liquid level detection function, comprising a liquid storage tank installed on a door panel, a liquid dispensing box installed below the liquid storage tank, an automatic liquid dispensing module installed between the liquid storage tank and the liquid dispensing box, the automatic liquid dispensing module being capable of automatically and quantitatively transferring cleaning liquid in the liquid storage tank to the liquid dispensing box; characterized in that The bottom of the liquid storage tank is provided with a insertion hole, and a float ball valve is inserted in the insertion hole.

2. The automatic liquid feeding mechanism with a liquid level detection function according to claim 1, characterized in that The magnetic switch is a dry reed or a Hall switch.

3. The automatic liquid feeding mechanism with a liquid level detecting function according to claim 1, characterized in that The liquid inlet groove is provided with two on the valve body, and is located on both sides of the valve cavity.

4. The automatic liquid feeding mechanism with a liquid level detecting function according to claim 1, characterized in that The bottom of the insertion hole is provided with a mounting ring, and two L-shaped grooves are formed in the mounting ring.

5. The automatic liquid feeding mechanism with a liquid level detecting function according to claim 4, characterized in that The bottom of the float ball valve is provided with a hand screw head, and the outer wall of the hand screw head is provided with knurling.

6. The automatic liquid feeding mechanism with a liquid level detecting function according to claim 4, characterized in that The side wall of the valve body is provided with an annular embedding groove, and a sealing ring is installed in the annular embedding groove.

7. The automatic liquid feeding mechanism with a liquid level detecting function according to any one of claims 1 to 6, characterized in that The automatic liquid injection module comprises a liquid injection valve and a motor.

8. The liquid level detecting function-equipped automatic liquid discharging mechanism according to claim 7, characterized in that The motor is a 12-volt motor.

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