Drainage element and milk mixer

Abstract

The utility model relates to the technical field of water dispensers, in particular to a drainage element and a milk mixing device. The drainage element comprises a three-way pipeline which comprises a water inlet pipeline, a water outlet pipeline and a drainage pipeline which are communicated with one another; the pump body is connected with the water inlet pipeline and is used for pumping external water into the water inlet pipeline; the electromagnetic valve is arranged in the three-way pipeline or a pipeline connected with the three-way pipeline, and the electromagnetic valve is used for controlling the flow direction of water flow in the three-way pipeline; when the pump body works, the electromagnetic valve blocks the drainage pipeline, and water in the water inlet pipeline only flows out of the water outlet pipeline. When the pump body does not work, the electromagnetic valve does not block the drainage pipeline, and residual water in the water inlet pipeline and the water outlet pipeline flows out of the drainage pipeline. The utility model has the advantage that the residual water in the water pipe between the pump and the water outlet is discharged so as to reduce the breeding and reproduction of bacteria.

Description

Technical Field

[0001] The utility model relates to the technical field of milk mixers, in particular to a drainage element and a milk mixer. Background Art

[0002] In some existing milk mixer designs, the water pipe between the water pump and the water outlet is typically used to transport drinking water. However, residual moisture in the water pipe can easily become a breeding ground for bacteria when idle. Although some devices drain residual water before each use, this practice does not completely guarantee that the water pipe remains dry when not in use, and thus cannot effectively prevent the growth and reproduction of bacteria, which may affect the child's health. This patented solution aims to address the problem of bacterial growth caused by residual moisture in the water pipe of existing milk mixers. Summary of the Invention

[0003] In order to solve the deficiencies in the prior art, a drainage element is provided for discharging residual water in a water pipe between a pump and a water outlet to reduce the growth and reproduction of bacteria.

[0004] The utility model is implemented by the following technical solutions: a drainage element, comprising: a three-way pipeline, comprising an inlet pipeline, an outlet pipeline and a drainage pipeline that are interconnected, the inlet pipeline and the outlet pipeline being located above the drainage pipeline in the direction of gravity, the inlet pipeline and the outlet pipeline being both unobstructed and both extending in the same straight line direction; a pump body, connected to the water inlet pipeline and used to pump external water into the water inlet pipeline; a solenoid valve, arranged in the three-way pipeline or on a pipeline connected thereto, the solenoid valve being used to control the flow direction of water in the three-way pipeline; wherein, when the pump body is working, the solenoid valve blocks the drainage pipeline, and the water in the water in the water inlet pipeline only flows out from the water outlet pipeline; when the pump body is not working, the solenoid valve does not block the drainage pipeline, and the residual water in the water inlet pipeline and the water outlet pipeline flows into the drainage pipeline under the action of gravity.

[0005] In this solution, when the user needs to use the milk mixer, the solenoid valve blocks the drain pipe, and the pump pumps the water from the milk mixer into the water inlet pipe, so that the water in the water inlet pipe flows out only through the water outlet pipe. When the user does not need to use the milk mixer, the pump does not operate, and the solenoid valve does not block the drain pipe, so that the water inlet pipe, water outlet pipe and drainage pipe are connected, allowing residual water in the water inlet pipe and water outlet pipe to flow out through the drain pipe, thereby keeping the water inlet pipe and water outlet pipe dry and preventing bacterial growth.

[0006] The solenoid valve may adopt any existing mechanism that can realize pipeline opening and closing.

[0007] The pump body and the solenoid valve are electrically connected via a control system.

[0008] This solution uses a solenoid valve to control the flow of water within the three-way pipe. This ensures that when the milk mixer is not in use, any remaining water in the inlet and outlet pipes flows out of the drain pipe, keeping them dry and preventing the growth of bacteria and microorganisms. Furthermore, the inlet and outlet pipes are both unobstructed and extend along the same straight line, eliminating any obstructions within the pipes. This ensures smooth water flow and improves the efficiency of both water delivery and drainage.

[0009] Preferably, the water outlet pipe and the water inlet pipe are integrally arranged, and radially penetrating through holes are provided on the pipe walls of the two pipes, the through holes are connected to the drainage pipe, and the solenoid valve includes a plug, which is used to block the through holes.

[0010] Since the water outlet pipe and the water inlet pipe are integrated, a through hole is provided on the wall of both pipes. When the plug blocks the through hole, the milk mixer is in the water outlet state. At this time, only a small part of the water flows into the through hole, which has little impact on the entire water outlet, making the water outlet smoother.

[0011] Preferably, the plug is located on one axial side of the through hole, and the outer end of the through hole is provided with an annular protrusion extending toward the plug side.

[0012] Usually the plug is made of silicone material, so an annular protrusion is provided at the outer end of the through hole, and the end face of the annular protrusion is flat, so that the plug can better contact with the annular protrusion, thereby facilitating the sealing of the plug.

[0013] Preferably, the water inlet pipe, the water outlet pipe and the drainage pipe are arranged in the same plane, and the water inlet pipe and the water outlet pipe are symmetrically arranged with the axis of the through hole as the symmetry axis.

[0014] The water inlet pipe, the water outlet pipe and the drainage pipe are arranged in the same plane. At the same time, the water inlet pipe and the water outlet pipe are symmetrically arranged with the axis of the through hole as the symmetry axis, so that the length from the water inlet pipe to the through hole and the length from the water outlet pipe to the through hole are equal. When draining residual water, the residual water in the two can flow into the through hole at the same time, thereby improving drainage efficiency.

[0015] Preferably, the solenoid valve includes a plunger that can perform linear reciprocating motion, and an active chamber for the plunger to move is provided in the three-way pipe. The water inlet pipe and the water outlet pipe are located at the upper end of the active chamber along the direction of gravity and are connected to the active chamber through the through hole, and the drainage pipe is located at the lower end of the active chamber along the direction of gravity and is connected to the active chamber; the plunger includes a straight section and a tapered section from top to bottom, the straight section and the tapered section are smoothly connected, and the diameter of the tapered section gradually increases from top to bottom.

[0016] The lower end of the active chamber in the drainage pipeline allows residual water from the inlet and outlet pipes to remain in the active chamber under the action of gravity before flowing out of the drainage pipeline. The straight section reduces the volume of the upper end of the plunger, facilitating smooth flow from the active chamber to the drainage pipeline during drainage. To ensure the strength of the entire plunger, a tapered section is provided as a transition point. This section guides the water and facilitates its removal.

[0017] Preferably, the solenoid valve includes a fixed iron core located below the plunger. When the solenoid valve is energized, the fixed iron core is used to abut against the bottom of the plunger and limit the plunger to an extreme position of movement away from the through hole.

[0018] By setting a fixed iron core under the plunger, the limit position of the plunger's movement can be limited, thereby preventing the plug from blocking the drainage pipe after it descends, and leaving enough drainage space between the plunger and the active chamber.

[0019] Preferably, the movable chamber is provided with a plurality of limit protrusions arranged at even intervals along a ring shape, and the plurality of limit protrusions are located on the circumferential outside of the plunger and gradually have gaps with the plunger. The plug is fixed at the end of the plunger, and the limit protrusions are used to contact the plug and limit the plunger to an extreme position when it is away from the through hole.

[0020] The stopper is located on the outer circumference of the plunger, leaving enough clearance between the plunger and the stopper for drainage. When the solenoid valve moves the plunger away from the through-hole, the stopper presses against the plug, preventing it from moving toward the drain pipe and blocking it. This arrangement also shortens the plunger's movable path, facilitating quick sealing and release of the plug.

[0021] Preferably, the solenoid valve includes a spring, and the plug has a tendency to move toward the through hole side under the action of the spring.

[0022] By setting the spring, the plug can block the through hole when the solenoid valve is not powered, thereby improving the sealing performance.

[0023] Preferably, the pipe bodies of the water outlet pipe and the water inlet pipe are detachably fixed to the pipe body of the drainage pipe, and a positioning groove and a positioning protrusion extending into the positioning hole are provided between the two.

[0024] The cooperation between the positioning groove and the positioning protrusion facilitates the positioning of the two during fixation.

[0025] A milk mixer with the above-mentioned drainage element includes a heating device, the heating device including a water storage container suitable for storing drinking water, a base suitable for supporting the water storage container, and a heating element suitable for heating drinking water, the pump body and the water storage container are connected by a first pipe; the water receiving device includes a storage table and a water outlet provided above the storage table, the storage table is equipped with a detachable waste water box; the water outlet pipe and the water outlet are connected by a second pipe, and the drainage pipe and the waste water box are connected by a third pipe.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. The residual water in the water inlet and outlet pipes can be discharged from the drainage pipe, thereby ensuring the dryness of the water inlet and outlet pipes and preventing the growth of bacteria or microorganisms; 2. The water outlet and drainage are smoother through the direct connection between the water inlet and outlet pipes; 3. The solenoid valve is automatically controlled and does not require user operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a structural diagram of the drainage element;

[0029] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0030] Figure 3 for Figure 1 sectional view of

[0031] Figure 4 for Figure 1 Schematic diagram of the structure after removing the pump body and casing;

[0032] Figure 5 for Figure 4 sectional view of .

[0033] Figure 6 for Figure 5 Enlarged view of the circled area.

[0034] Figure 7 This is a structural diagram of the pipe body of the drainage pipe.

[0035] Figure 8 This is a schematic structural diagram of Example 2.

[0036] Figure numbers: 1. Shell; 2. Pump body; 21. Pump body input pipe; 22. Pump body output pipe; 3. Water inlet pipe; 31. First fixing part; 4. Water outlet pipe; 5. Drain pipe; 51. Limiting protrusion; 52. Sealing ring; 53. Second fixing part; 54. Positioning protrusion; 6. Solenoid valve; 61. Plunger; 611. Straight section; 612. Conical section; 62. Plug; 63. Spring; 64. Fixed iron core; 7. Through hole; 71. Annular protrusion; 8. Movable chamber. DETAILED DESCRIPTION

[0037] Example 1

[0038] like Figures 1 to 3 As shown, this embodiment 1 discloses a drainage element, comprising a housing 1, within which are located a pump body 2, a water inlet pipe 3, a water outlet pipe 4, a drain pipe 5, and a solenoid valve 6. The pump body 2 is provided with a pump body inlet pipe 21 exposed outside the housing 1 and a pump body outlet pipe 22 located inside the housing 1. The pump body inlet pipe 21 is connected to an external water source, and the pump body outlet pipe 22 is connected to the water inlet pipe 3. The water inlet pipe 3 is located within the housing 1, and the ends of the water outlet pipe 4 and the drain pipe 5 are exposed outside the housing 1. The water inlet pipe 3, the water outlet pipe 4, and the drain pipe 5 are interconnected to form a three-way pipe. The water inlet pipe 3 and the water outlet pipe 4 are always connected. The solenoid valve 6 is located at the intersection of the water inlet pipe 3, the water outlet pipe 4, and the drain pipe 5, and is used to control whether the drain pipe 5 can communicate with the water inlet pipe 3 and the water outlet pipe 4.

[0039] like Figures 4 to 7 As shown, the water inlet pipe 3 and the water outlet pipe 4 are both unobstructed and extend in the same straight line. The inner diameter of the water inlet pipe 3 is the same as that of the water outlet pipe 4. The water outlet pipe 4 and the water inlet pipe 3 are integrally arranged, and a through hole 7 is provided on the pipe wall of both. The pipe body of the water outlet pipe 4 and the water inlet pipe 3 is provided with a first fixing portion 31, and the pipe body of the drainage pipe 5 is provided with a second fixing portion 53. The second fixing portion 53 is provided with an internal threaded hole (not shown in the figure). The first fixing portion 31 is provided with a fixing hole (not shown in the figure) corresponding to the internal threaded hole. The first fixing portion 31 and the second fixing portion 53 are fixed by screws. The water inlet pipe 3, the water outlet pipe 4 and the drainage pipe 5 are arranged in the same plane, and the water inlet pipe 3 and the water outlet pipe 4 are symmetrically arranged with the axis of the through hole 7 as the axis of symmetry. An O-ring 52 is provided at the connection between the first fixing portion 31 and the second fixing portion 53. The end surface of the second fixing portion 53 is provided with a positioning protrusion 54 extending toward the first fixing portion 31, and the end surface of the first fixing portion 31 is provided with a positioning hole (not shown) that cooperates with the positioning protrusion 54.

[0040] The solenoid valve 6 is fixed to the second fixing portion 53. The plunger 61 of the solenoid valve 6 extends into the interiors of the first and second fixing portions 31 and 53. The interiors of the first and second fixing portions 31 and 53 form a movable chamber 8, which allows the plunger 61 of the solenoid valve 6 to perform linear reciprocating motion. The inlet and outlet pipes 3 and 4 are located at the upper end of the movable chamber 8, along the direction of gravity, and communicate with the movable chamber 8 through the through-hole 7. The drain pipe 5 is located at the lower end of the movable chamber 8, along the direction of gravity, and communicates with the movable chamber 8. A plug 62 is fixed to one end of the plunger 61. The plug 62 is located axially on one side of the through-hole 7. The outer end of the through-hole 7 is provided with an annular protrusion 71 extending toward the plug. A spring 63 is attached to the other end of the plunger 61. When the solenoid valve 6 is de-energized, the spring 63 forces the plunger 61 to move closer to the through-hole 7, causing the plug 62 to contact the annular protrusion 71 and block the through-hole 7.

[0041] like Figure 6 and Figure 7 As shown, the plunger 61 includes, from top to bottom, a straight section 611 and a tapered section 612. The straight section 611 and the tapered section 612 are smoothly connected, and the diameter of the tapered section 612 gradually increases from top to bottom. The movable chamber 8 is provided with four evenly spaced limiting bumps 51 arranged along an annular path. The limiting bumps 51 are disposed on the body of the drainage pipe 5. The four limiting bumps 51 are located circumferentially outside the plunger 61, with a gap between them. When the solenoid valve 6 is energized, the magnetic force is greater than the elastic force of the spring 63, causing the plunger 61 to move away from the through hole 7. The limiting bumps 51 are used to contact the plug 62 and limit the plunger 61 to its extreme position when moving away from the through hole 7.

[0042] Example 2

[0043] The difference between Example 2 and Example 1 is that the solenoid valve 6 includes a fixed iron core 64 below the plunger 61. When the solenoid valve 6 is energized, the plunger 61 descends and contacts the fixed iron core, leaving sufficient drainage space between the plunger 61 and the active chamber 8. Furthermore, the pipe bodies of the water inlet pipe 3, the water outlet pipe 4, and the drainage pipe 5 are integrally provided.

[0044] Example 3

[0045] This embodiment 3 discloses a milk mixer (not shown) having the above-mentioned drainage element, and the drainage element is arranged in the milk mixer. The milk mixer includes a heating device, which includes a water storage container suitable for storing drinking water, a base suitable for supporting the water storage container, and a heating element suitable for heating drinking water. The pump body input pipe 21 is connected to the water storage container by a first pipe. The milk mixer is also provided with a water receiving device, including a storage table and a water outlet provided above the storage table, and the storage table is equipped with a detachable waste water box; the water outlet pipe 4 is connected to the water outlet by a second pipe, and the drainage pipe 5 is connected to the waste water box by a third pipe. Among them, the heating device and the water receiving device are devices that are previously carried by any milk mixer and realize such functions.

[0046] During use, when a user needs to draw water, pump body 2 operates, solenoid valve 6 is de-energized, and plug 62 remains blocked in through-hole 7, allowing water to flow out of outlet pipe 4 and the water outlet nozzle. When the user has finished drawing water, pump body 2 stops, solenoid valve 6 is energized, plug 62 descends, and contacts stopper protrusion 51. At this point, the remaining water in inlet pipe 3 and outlet pipe 4 flows through through-hole 7 into drain pipe 5 and then into the wastewater box due to gravity. Solenoid valve 6 closes 1 to 5 seconds after energization, allowing plug 62 to block through-hole 7 again.

Claims

1. A drainage element, characterized in that: include: A three-way pipeline, comprising an inlet pipeline, an outlet pipeline and a drainage pipeline that are interconnected, wherein the inlet pipeline and the outlet pipeline are located above the drainage pipeline in the direction of gravity, and the inlet pipeline and the outlet pipeline are both unobstructed and extend in the same straight line direction; A pump body, connected to the water inlet pipeline and used to pump external water into the water inlet pipeline; a solenoid valve, disposed in the three-way pipeline or on a pipeline connected thereto, the solenoid valve being used to control the flow direction of water in the three-way pipeline; Among them, when the pump body is working, the solenoid valve blocks the drainage pipe, and the water in the water inlet pipe only flows out from the water outlet pipe; when the pump body is not working, the solenoid valve does not block the drainage pipe, and the residual water in the water inlet pipe and the water outlet pipe flows into the drainage pipe under the action of gravity.

2. The drainage element according to claim 1, characterized in that: The inner diameters of the water outlet pipe and the water inlet pipe are the same and the two are arranged integrally. The pipe walls of the water outlet pipe and the water inlet pipe are provided with radially penetrating through holes, which are connected to the drainage pipe. The solenoid valve includes a plug, which is used to block the through hole.

3. The drainage element according to claim 2, characterized in that: The plug is located on one axial side of the through hole, and an annular protrusion extending toward the plug is provided at the outer end of the through hole.

4. The drainage element according to claim 2, characterized in that: The water inlet pipe, the water outlet pipe and the drainage pipe are arranged in the same plane, and the water inlet pipe and the water outlet pipe are symmetrically arranged with the axis of the through hole as the symmetry axis.

5. The drainage element according to claim 2, characterized in that: The solenoid valve includes a plunger that can perform linear reciprocating motion, and an active chamber for the plunger to move is provided in the three-way pipeline. The water inlet pipeline and the water outlet pipeline are located at the upper end of the active chamber along the direction of gravity and are connected to the active chamber through the through hole. The drainage pipeline is located at the lower end of the active chamber along the direction of gravity and is connected to the active chamber; the plunger includes a straight section and a tapered section from top to bottom, the straight section and the tapered section are smoothly connected, and the diameter of the tapered section gradually increases from top to bottom.

6. The drainage element according to claim 5, characterized in that: The solenoid valve includes a fixed iron core located below the plunger. When the solenoid valve is energized, the fixed iron core is used to abut against the bottom of the plunger and limit the plunger to an extreme position away from the through hole.

7. The drainage element according to claim 5, characterized in that: A plurality of limiting protrusions are arranged in a ring-shaped evenly spaced manner in the movable chamber, and a plurality of the limiting protrusions are located on the circumferential outside of the plunger and there is a gap between the limiting protrusions and the plunger. The plug is fixed to the end of the plunger, and the limiting protrusions are used to contact the plug and limit the plunger to an extreme position when it is away from the through hole.

8. The drainage element according to any one of claims 2 to 6, characterized in that: The solenoid valve includes a spring, and the plug has a tendency to move toward the through hole side under the action of the spring.

9. The drainage element according to any one of claims 2 to 6, characterized in that: The pipe bodies of the water outlet pipe and the water inlet pipe are detachably fixed to the pipe body of the drainage pipe, and a positioning groove and a positioning protrusion extending into the positioning hole are provided between the two.

10. A milk mixer having the drainage element according to any one of claims 1 to 9, characterized in that: It includes a heating device, which includes a water storage container suitable for storing drinking water, a base suitable for supporting the water storage container and a heating element suitable for heating drinking water, and the pump body and the water storage container are connected by a first pipe; the water receiving device includes a storage table and a water outlet provided above the storage table, and the storage table is equipped with a detachable waste water box; the water outlet pipe and the water outlet are connected by a second pipe, and the drainage pipe and the waste water box are connected by a third pipe.

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