Detergent flow mixing device
By incorporating steps and a one-way valve into the detergent mixing device, the structural complexity and leakage problems of the automatic detergent dispensing system for washing machines are solved, achieving rapid and uniform mixing of detergent and water while reducing costs.
Patent Information
- Application Number
- CN202520036923.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-01-08
AI Technical Summary
Existing washing machine automatic detergent dispensing systems have complex structures, which increases costs, and the welded chambers are prone to leakage.
The detergent mixing device is designed using an integrated molding process. By setting steps on the water outlet or spiral blades and installing one-way valves at the liquid inlet, the movement of the spiral blades and backflow of water are prevented, simplifying the structure and reducing costs.
It achieves rapid and uniform mixing of detergent and water, avoids backflow of water, simplifies the structure of the washing machine, and reduces production costs.
Smart Images

Figure CN223963708U_ABST
Abstract
Description
Technical fields:
[0001] This utility model belongs to the technical field of detergent mixing device, specifically relating to a detergent mixing device, which has a step set inside the water outlet or at the upper end of the spiral blade to prevent the spiral blade from moving, and a one-way valve set at the liquid inlet to prevent the water from flowing in the opposite direction. Background technology:
[0002] High-end washing machines in the current technology generally have an automatic detergent dispensing function. The principle is that the detergent is automatically dispensed into the water inlet pipe, and then flushed into the washing machine drum by water flow. To ensure thorough mixing of the detergent and water, a separate chamber with a baffle or agitator is used, making the washing machine structure more complex and increasing costs. Furthermore, the need to weld the chamber can easily lead to leaks. For example, Chinese Patent 202323186995.9 discloses a washing machine detergent dispenser water inlet structure, including a shell and a box body that cooperates with the shell. The box body has a fabric softener chamber and at least one detergent chamber. A top cover plate is fixedly connected to the top wall of the shell, forming a fabric softener water inlet chamber, a detergent water inlet chamber, a water inlet passage, and an inlet chamber and an outlet chamber located on one side of the fabric softener water inlet chamber. One end of the water inlet passage connects to the detergent chamber, and the other end connects to the inlet chamber, and the outlet chamber connects to... The fabric softener filling chamber is connected to the detergent filling chamber; the fabric softener filling chamber and the detergent filling chamber correspond one-to-one with the fabric softener chamber and the detergent chamber, respectively; several water injection holes are provided on the top wall of the shell, through which the fabric softener filling chamber is connected to the fabric softener chamber, and the detergent filling chamber is connected to the detergent chamber; a water inlet connected to the water injection passage is provided on the side wall of the shell, and a water inlet valve connected to the water inlet is connected to it; a second water inlet connected to the water inlet chamber and a water outlet connected to the water outlet chamber are provided on the side wall of the shell, and the shell is connected to a reversing device. The valve, specifically the reversing valve, has its inlet end connected to the second inlet and its outlet end connected to the outlet. Several stiffening ribs are provided on the upper surface of the housing's top wall. The upper surface of these ribs is in close contact with the lower surface of the upper cover plate, forming a fabric softener injection chamber, a detergent injection chamber, an injection passage, an inlet chamber, and an outlet chamber. The top wall of the housing is recessed downwards, forming a settling tank with the inner wall of the housing. A partition is fixedly connected between the settling tank and the inner wall of the housing, dividing the settling tank into an inlet chamber and an outlet chamber. The top wall of the housing is located within the injection passage. The surface is recessed downwards, forming a water inlet trough with the inner wall of the shell. The water inlet trough is connected to the water inlet. A siphon tube is fixedly connected to the bottom wall of the fabric softener chamber. The siphon tube is fitted with a sleeve with a sealed upper end. Several strip plates are fixedly connected to the outer wall of the siphon tube. The strip plates are stepped. The sleeve is fitted on the outside of the strip plates, so that there are gaps between the inner wall of the sleeve and the outer wall of the siphon tube, as well as between the inner top wall of the sleeve and the upper end face of the siphon tube. A sinking trough is provided on the bottom wall of the fabric softener chamber, and the siphon tube is connected to the bottom wall of the sinking trough.Chinese Patent 202322631127.0 discloses an automatic detergent dispensing structure for a washing machine, comprising: a liquid storage component embedded in the washing machine; a sealing component disposed above the liquid storage component; a liquid delivery pipe connected to the bottom of the sealing component; a pressing component disposed above the sealing component; a dispensing component installed inside the liquid storage component; and a spring disposed between the sealing component and the pressing component, and sleeved on the outer wall of the dispensing component. The liquid storage component includes: a liquid storage box; a retaining plate disposed on the upper side of the liquid storage box; a protrusion fixed to the bottom of the liquid storage box; a connecting block disposed on the protrusion near one end of the dispensing component; a guide groove formed on the connecting block; and a liquid outlet formed on the liquid storage box directly below the guide groove. The pressing component includes: a pressing block and a threaded post fixed to the bottom of the pressing block. Chinese Patent 202122127985.2 discloses an automatic detergent dispensing device for a washing machine, comprising a detergent container, a transmission pipe with an inner cavity communicating with the detergent container, a connecting rod located inside the transmission pipe and hinged to the transmission pipe, a buoyancy ball located at one end of the connecting rod, and a sealing plug located at the other end of the connecting rod. The transmission pipe has a transmission port communicating with the detergent container on its wall. The sealing plug is located at the transmission port and includes a plug body and a suction cup at the bottom of the plug body. The plug body is hinged to the end of the connecting rod, and the suction cup is located inside the transmission port. An installation plate is provided inside the transmission pipe, and the middle part of the connecting rod is hinged to the installation plate. The transmission pipe is located below the detergent container, and the transmission port is located on the top wall of the transmission pipe. The bottom wall of the detergent container has a detergent outlet. The transmission pipe has a connecting pipe communicating with the transmission port and the detergent outlet. The top of the sealing plug is located inside the connecting pipe. The transmission pipe is a Venturi tube, and the transmission port is located at the minimum diameter of the Venturi tube. Chinese Patent 201920324263.6 discloses a detergent dispensing device for a washing machine, comprising a water inlet, a pump body, and a detergent dispenser. The water inlet has at least one water inlet pipe. The water inlet includes a cover plate, a water passage plate, and a bottom shell connected in sequence. A water passage cavity is formed between the cover plate and the water passage plate, and a dispensing cavity is formed between the water passage plate and the bottom shell. A second water passage is provided on the water passage plate, and the inlet of the second water passage is connected to the water inlet pipe. A second water passage hole is provided in the second water passage, penetrating the water passage plate, and the water passage cavity is connected to the dispensing cavity through the second water passage hole. A spray preventer is provided on the side of the water passage plate near the dispensing cavity. The splash guard and anti-splash section are respectively connected to the second water passage and the pump body's drain pipe. The anti-splash section is located between the detergent box and the bottom shell, and is positioned on the side of the second water passage closest to the detergent box. The anti-splash section includes a first baffle, a second baffle, and a third baffle. The first baffle, the second baffle, and the third baffle together form an open anti-splash zone. The opening direction of the anti-splash zone is opposite to the drain direction of the drain pipe. A spray zone is provided at the outlet of the second water passage, and the spray zone has multiple third water passages. A first water passage is provided on the water circuit board, and the inlet of the first water passage is connected to the inlet pipe. Therefore, a detergent mixing device is developed and designed, which simplifies the overall structure and reduces production costs through an integrated molding process. Summary of the Invention:
[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and to develop a detergent mixing device that uses steps and a one-way valve to prevent the spiral blades from moving and avoid backflow of water.
[0004] To achieve the above objectives, the main structure of the detergent mixing device of this utility model includes a base and an inlet, an outlet and a liquid inlet provided thereon, as well as spiral blades provided inside.
[0005] The outlet or the upper end of the spiral blades are provided with a step:
[0006] When the step is located inside the outlet, the inner diameter of the step is smaller than the outer diameter of the spiral blade.
[0007] When the step is set at the upper end of the spiral blade, the outer diameter of the step is larger than the inner diameter of the inlet;
[0008] In addition, a one-way valve is installed at the liquid inlet.
[0009] Compared with the prior art, the main structure of this utility model includes a base and an inlet, an outlet, and a liquid inlet on it, as well as a spiral blade inside the base. The base is formed by an integral molding process. A step is provided inside the outlet or at the upper end of the spiral blade. When the step is provided inside the outlet, it abuts against the spiral blade. When the step is provided at the upper end of the spiral blade, it abuts against the inlet, preventing the spiral blade from moving under the impact of water flow. When detergent enters the interior of the base through the liquid inlet, it accumulates at the spiral blade. Water enters the interior of the base through the inlet. Under the action of the spiral blade, the water and detergent are quickly and evenly mixed and then flow out through the outlet. A one-way valve is provided at the liquid inlet to prevent excessive water pressure inside the base from causing backflow from the liquid inlet. Attached image description:
[0010] Figure 1 This is a schematic diagram of the main structure of this utility model.
[0011] Figure 2 This is a schematic diagram of the main structure principle of Embodiment 1 of this utility model.
[0012] Figure 3 This is a schematic diagram of the main structure principle of Embodiment 2 of this utility model.
[0013] Figure 4 This is a schematic diagram of the main structure principle of Embodiment 3 of this utility model. Detailed implementation method:
[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0015] Example 1:
[0016] The main structure of a detergent mixing device involved in this embodiment is as follows: Figure 1 As shown, it includes a base 1, an inlet 2, an outlet 3, a liquid inlet 4, a spiral blade 5, and a step 6;
[0017] The cylindrical substrate 1 has an inlet 2 at the top, an outlet 3 at the bottom, a liquid inlet 4 in the middle, and a spiral blade 5 inside.
[0018] The upper end of the spiral blade 5 is provided with a step 6, and the outer diameter of the step 6 is larger than the inner diameter of the inlet 2.
[0019] Example 2:
[0020] The main structure of a detergent mixing device involved in this embodiment is as follows: Figure 1 As shown, it includes a base 1, an inlet 2, an outlet 3, a liquid inlet 4, a spiral blade 5, and a step 6;
[0021] The cylindrical substrate 1 has an inlet 2 at the top, an outlet 3 at the bottom, a liquid inlet 4 in the middle, and a spiral blade 5 inside.
[0022] The outlet 3 has a step 6 inside, and the inner diameter of the step 6 is smaller than the outer diameter of the spiral blade 5.
[0023] Example 3:
[0024] The main structure of a detergent mixing device involved in this embodiment is as follows: Figure 1 As shown, it includes a base 1, an inlet 2, an outlet 3, a liquid inlet 4, a spiral blade 5, a step 6, and a one-way valve 7;
[0025] The cylindrical substrate 1 has an inlet 2 at the top, an outlet 3 at the bottom, a liquid inlet 4 in the middle, and a spiral blade 5 inside.
[0026] A step 6 is provided inside the outlet 3 or at the upper end of the spiral blade 5:
[0027] When step 6 is set inside outlet 3, the inner diameter of step 6 is smaller than the outer diameter of spiral blade 5;
[0028] When step 6 is set at the upper end of spiral blade 5, the outer diameter of step 6 is larger than the inner diameter of inlet 2;
[0029] In addition, a one-way valve 7 is installed at the liquid inlet 4.
Claims
1. A detergent mixing device, the main structure comprising a base and a water inlet, a water outlet and a liquid inlet arranged on the base, characterized in that, The inner part of the base is provided with a spiral blade, and the inner part of the water outlet or the upper end of the spiral blade is provided with a step.
2. A detergent mixing device according to claim 1, wherein The spiral blade is provided separately from the base, and when the step is arranged in the inner part of the water outlet, the inner diameter of the step is smaller than the outer diameter of the spiral blade.
3. The detergent mixing device according to claim 1, wherein The spiral blade is provided separately from the base, and when the step is arranged at the upper end of the spiral blade, the outer diameter of the step is greater than the inner diameter of the water inlet.
Citation Information
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