Dropping device

Abstract

The invention discloses a putting device which comprises a water inlet branch, a water mixing branch and a water outlet branch which are connected in sequence, and water introduced by the water inlet branch and a detergent extracted by the water inlet branch are mixed in the water mixing branch and flow out of the water outlet branch; the mixed flow meter is connected between the water mixing branch and the water outlet branch in series, an impeller driven by inlet water to rotate is arranged in the mixed flow meter, and a mixing structure with an uneven surface is arranged on the impeller. The impeller has the beneficial effects that in the rotating process of the impeller, the uneven surface is formed on the surface of the impeller through the mixing structure, so that the flow direction and the flow speed of nearby water flow are changed to different degrees, turbulent flow is formed on the surface of the impeller, inflow water flow is difficult to directly impact on the surface of the impeller, and the flow speed is increased; therefore, the undissolved additive is prevented from being adhered to the impeller; meanwhile, the turbulent flow formed by the mixing structure can enable the water flow to be fully stirred in the mixing flow meter, so that the impeller of the flow meter has the mixing and stirring functions, and the additive is completely dissolved.

Description

Technical Field

[0001] The invention belongs to the field of cleaning equipment, and in particular relates to a dispensing device. Background Art

[0002] With the advancement of technology, existing fully automatic washing machines have gradually appeared with automatic detergent dispensing functions. The working principle is roughly to place the detergent in a liquid storage box in advance. After the outlet of the liquid storage box is connected to the water box docking valve, the detergent is drawn into the water box for dilution, and then put into the inner barrel of the washing machine for washing.

[0003] There are also existing devices that can automatically dispense detergents and / or rinse agents and other additives, which can connect the water inlet waterway and the additive dispensing waterway, and mix the detergent with tap water in the water inlet waterway before dispensing it into the washing tub. In traditional designs, a flow meter is set in the water inlet waterway to detect the flow rate of the water flowing through it. However, since the mixed liquid entering the flowmeter usually contains additives that are not completely dissolved, the undissolved additives will adhere to the impeller of the flowmeter, thereby affecting the accuracy of the flowmeter in measuring the flow rate of the water flowing through it; in addition, in order to avoid other components or facilitate connection with other pipelines, a curved and extended waterway is set in the waterway, and when the water flows through the bend, it is easy for the undissolved additives to adhere to the outer side wall of the bend of the waterway, reducing the passing area of ​​the waterway, and in severe cases, even the waterway will be blocked.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a dosing device. By setting an uneven mixing structure on the impeller driven by the incoming water, when the impeller rotates, the water flows at various positions near the impeller form turbulence on the impeller surface due to the different amplitudes pushed by the mixing structure, making it difficult for the incoming water flow to directly impact the impeller surface, thereby solving the problem of undissolved additives adhering to the impeller; at the same time, the turbulence formed by the mixing structure can fully stir the water flow in the mixing flowmeter, promote the accelerated dissolution of the undissolved additives, thereby solving the problem of undissolved additives adhering to the side walls of the waterway.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a dosing device, including a water inlet branch, a mixing water branch and a water outlet branch connected in sequence, the water introduced by the water inlet branch and the extracted detergent are mixed in the mixing water branch and flow out from the water outlet branch; it also includes a mixing flowmeter connected in series between the mixing water branch and the water outlet branch, and an impeller driven to rotate by the water inlet is arranged inside, and a mixing structure with an uneven surface is arranged on the impeller.

[0007] Furthermore, the impeller is provided with sheet-like blades extending outwardly along the axis, and the outer peripheral edge of the blade is provided with a first mixing structure protruding or recessed outwardly.

[0008] Furthermore, a plurality of first mixing structures protruding outward are arranged on the end surfaces of the edges on both sides of the blade, and the plurality of first mixing structures are combined to form a serrated side edge of the blade.

[0009] Furthermore, the outer end surface of the first mixing structure is set as a plane parallel to the end surface on the corresponding side of the blade, forming a boss-type mixing structure.

[0010] Furthermore, each first mixing structure is arranged at a certain distance from each other.

[0011] Furthermore, a second mixing structure is provided on the end surface of the extension end of the blade and protrudes from both sides to the middle in the extension direction.

[0012] Furthermore, a metering chamber connected to the mixing branch and the outlet branch is provided inside the mixing flowmeter, an impeller is rotatably arranged in the metering chamber, and an outer peripheral edge of the impeller is arranged at a certain distance from the chamber wall of the metering chamber.

[0013] Furthermore, the metering chamber is a columnar structure, the extension directions of the water mixing branch and the water outlet branch are parallel to each other, and are respectively arranged perpendicular to the axis of the columnar metering chamber; the impeller and the metering chamber are arranged coaxially.

[0014] Furthermore, the extension direction of the water mixing branch is staggered with the axis of the metering chamber, and the water outlet branch and the water mixing branch are respectively located on the same side of the axis of the metering chamber.

[0015] Furthermore, a tube wall on one side of the water outlet branch is tangentially connected to a chamber wall of the metering chamber.

[0016] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: during the rotation of the impeller, an uneven surface is formed on its surface through the mixing structure, which causes the flow direction and flow velocity of the nearby water flow to change to varying degrees, so as to form turbulence on the impeller surface, making it difficult for the incoming water flow to directly impact the impeller surface, thereby preventing undissolved additives from adhering to the impeller; at the same time, the turbulence formed by the mixing structure can enable the water flow to be fully stirred in the mixing flowmeter, so that the impeller of the flowmeter also has a mixing and stirring function, so that the additives are completely dissolved.

[0017] At the same time, the invention has a simple structure, significant effects and is suitable for popularization and use.

[0018] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a delivery device of the present invention;

[0021] Figure 2 is a cross-sectional view of a delivery device of the present invention;

[0022] Figure 3 It is a schematic diagram of the impeller structure of a delivery device of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of a water inlet branch pipe of a delivery device of the present invention;

[0024] Figure 5 It is a schematic diagram of the internal structure of a water inlet branch pipe of a delivery device of the present invention;

[0025] Figure 6 It is a cross-sectional view of a water inlet branch pipe of a delivery device of the present invention;

[0026] Figure 7 It is a structural schematic diagram of a pressure relief component of a delivery device of the present invention.

[0027] In the figure: 1. water inlet branch; 11. mounting seat; 111. first wall; 112. second wall; 113. third wall; 1131. sealing ring groove; 114. mounting cavity; 115. rotating shaft cavity; 116. water outlet cavity; 117. first positioning ring; 118. second positioning ring; 2. mixing water branch; 3. water outlet branch; 301. first water outlet branch; 302. second water outlet branch; 4. driving mechanism; 5. pressure relief member; 51. water hole; 511. water inlet end; 512. water outlet end; 6. pressure sensor; 7. one-way valve; 8. mixing flowmeter; 801. metering cavity; 810. impeller; 811. blades; 812. rotating shaft; 813. driving unit; 820. mixing structure; 821. first mixing structure; 822. second mixing structure; 831. terminal.

[0028] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0030] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1-7 As shown, in an embodiment of the present invention, a dosing device is introduced, comprising a water inlet branch 1, a water mixing branch 2 and a water outlet branch 3 connected in sequence, the water introduced into the water inlet branch 1 and the extracted detergent are mixed in the water mixing branch 2 and flow out from the water outlet branch 3; it also includes a mixing flowmeter 8 connected in series between the water mixing branch 2 and the water outlet branch 3, an impeller 810 driven to rotate by the water inlet is arranged inside, and a mixing structure 820 with an uneven surface is arranged on the impeller 810.

[0033] Through the above arrangement, during the rotation of the impeller 810, an uneven surface is formed on its surface through the mixing structure 820, which causes the flow direction and flow rate of the nearby water flow to change to varying degrees, so as to form turbulence on the surface of the impeller 810, making it difficult for the incoming water flow to directly impact the surface of the impeller 810, thereby preventing undissolved additives from adhering to the impeller 810; at the same time, the turbulence formed by the mixing structure 820 can enable the water flow to be fully stirred in the mixing flowmeter 8, so that the impeller 810 of the flowmeter also has a mixing and stirring function, so that the additives are completely dissolved.

[0034] It should be noted that the flowmeter detects the liquid flow rate by converting the number of revolutions of the counting impeller 810 per unit time or the time taken for the impeller 810 to rotate a specified number of revolutions per unit time, and the formula or comparison table used for the conversion is obtained through a large number of repeated experiments in the laboratory. In the present invention, after the flowmeter is modified and a large number of experiments are conducted, the mixing flowmeter 8 can also have an accurate flow detection function. In addition, by forming turbulence, the problem of additives adhering to the impeller 810 is effectively prevented, thereby further improving the accuracy of the flowmeter in detecting the mixed liquid.

[0035] In the embodiment of the present invention, the impeller 810 is provided with sheet-like blades 811 extending outwardly along the axis, and the outer peripheral edge of the blades 811 is provided with a first mixing structure 820 protruding or recessed outwardly.

[0036] Through the above arrangement, through the uneven periphery, when the impeller 810 rotates, part of the water flow in the same radial direction located near the periphery of the impeller 810 flows through the gap between the mixing structures 820, and the remaining part is blocked by the mixing structure 820, so that the water pressure values ​​of the water flow located in the radial square are unequal, thereby causing the flow direction of the water flow to deviate to varying degrees to form turbulence, thereby preventing the additive from adhering to the blades 811.

[0037] In the embodiment of the present invention, mixing structures 820 protruding toward the outside of the blade 811 or recessed toward the inside are respectively distributed on the front and rear surfaces of the sheet-like blade 811 .

[0038] Through the above arrangement, when the blade 811 rotates, the front or rear surface of the blade 811 pushes the water flow to flow from the raised position to the recessed position, so that the water flow forms a water film flowing along the surface of the blade 811. When the incoming water hits the blade 811, due to the different flow directions of the incoming water and the water film on the blade 811, the incoming water is first mixed with the water flow constituting the water film, thereby causing the flow direction of the incoming water to change and unable to directly hit the blade 811. In addition, the undissolved additives will also be dissolved faster during the mixing process, thereby preventing the additives in the incoming water from adhering to the blade 811.

[0039] In an embodiment of the present invention, a plurality of first mixing structures 820 protruding outward are respectively arranged on the end faces of the edges on both sides of the blade 811, and the plurality of first mixing structures 820 are combined to form the serrated side edges of the blade 811; the first mixing structure 820 has a simple, compact and reasonable structure, and can generate regularly distributed turbulence, so that the incoming water at each position can be fully mixed, and the stirring and dissolution of the additive can be completed in a very short time.

[0040] In an embodiment of the present invention, the outer end face of the first mixing structure 820 is set to a plane parallel to the end face on the corresponding side of the blade 811, forming a boss-type mixing structure 820; so that there are no protruding sharp angles on the edges of both sides of the blade 811, preventing the outer edge of the blade 811 from cutting the mixing flowmeter 8.

[0041] In the embodiment of the present invention, each first mixing structure 820 is arranged at a certain distance from each other; so that each group of turbulent flows formed by the blades 811 are arranged at intervals to avoid the turbulent flows from interfering with each other, thereby greatly mixing the fluid resistance inside the flow meter 8 and reducing the overall flow rate of the water entering the delivery device.

[0042] In an embodiment of the present invention, a second mixing structure 820 is provided on the end surface of the extended end of the blade 811, which protrudes in the extension direction from both sides to the middle; when the incoming water enters, part of the water flow passes quickly through the gap above the second mixing structure 820, and the remaining part of the water flow is blocked by the second mixing structure 820, and the flow rate is reduced, so that the incoming water will have turbulent flow after passing through the blade 811, thereby achieving mixing and stirring of the incoming water.

[0043] In the embodiment of the present invention, the extension end of the second mixing structure 820 is an arc surface, and the second mixing structure 820 has inclined surfaces on both sides to the middle that are inclined away from the blade 811, and the inclined surfaces on both sides are respectively connected to the extension end in an arc-shaped transition.

[0044] In the embodiment of the present invention, the sheet-like blades 811 are arranged parallel to the axis of the impeller 810 , and are arranged parallel to the corresponding radial direction of the impeller 810 .

[0045] In an embodiment of the present invention, the sheet-like blade 811 has an axially symmetrical structure, and the axis of the blade 811 is perpendicular to the axis of the impeller 810; preferably, the center lines of the mixing water branch 2 and the outlet water branch 3 are respectively staggered with the axis of the blade 811; thereby, the incoming water flowing through the blade 811 can evenly push the impeller 810 to rotate, preventing the driving force of the blade 811 on the impeller 810 from being perpendicular to the axial direction of the impeller 810, causing the connection between the blade 811 and the impeller 810 to be deformed, thereby reducing the measurement accuracy of the mixing flowmeter 8.

[0046] In the embodiment of the present invention, the first mixing structure 820 and the second mixing structure 820 are respectively integrated with the corresponding blades 811 .

[0047] In an embodiment of the present invention, a metering chamber 801 connected to the mixing branch 2 and the water outlet branch 3 is provided inside the mixing flowmeter 8, and an impeller 810 is rotatably arranged in the metering chamber 801, and the outer peripheral edge of the impeller 810 is arranged at a certain distance from the chamber wall of the metering chamber 801.

[0048] Through the above arrangement, by setting the impeller 810 at a certain distance from the chamber wall, the proportion of the portion in the metering chamber 801 that is not in direct contact with the impeller 810 is increased, making it easier for the two parts of water to form mixed flow, thereby improving the mixing effect.

[0049] In an embodiment of the present invention, the metering chamber 801 is a columnar structure, the extension directions of the water mixing branch 2 and the water outlet branch 3 are parallel to each other, and are respectively arranged perpendicular to the axis of the columnar metering chamber 801; the impeller 810 is coaxially arranged with the metering chamber 801; the water flow directions of the water mixing branch 2 and the water outlet branch 3 are respectively parallel to the rotation direction of the impeller 810, so that the incoming water can flow more smoothly inside the delivery device.

[0050] In an embodiment of the present invention, the extension direction of the water mixing branch 2 is staggered with the axis of the metering chamber 801, and the water outlet branch 3 and the water mixing branch 2 are respectively located on the same side of the axis of the metering chamber 801; when the incoming water of the water mixing branch 2 flows into the metering chamber 801, it flows towards the blades 811 located on one side of the axis of the impeller 810, so that the incoming water can better drive the impeller 810 to rotate.

[0051] In an embodiment of the present invention, the center line of the water outlet branch 3 and the center line of the water mixing branch are offset; since the incoming water containing additives has a certain viscosity, through the above arrangement, the incoming water flowing out of the water mixing branch 2 needs to be deflected by a certain angle before entering the water outlet branch 3, thereby preventing the incoming water containing additives from short-circuiting in the metering chamber 801, thereby ensuring the mixing effect of the incoming water.

[0052] In the embodiment of the present invention, one side wall of the water outlet branch 3 is tangentially connected to the chamber wall of the metering chamber 801, thereby further improving the smoothness of the water channel in the delivery device.

[0053] In the embodiment of the present invention, a terminal 831 is provided on the impeller 810 , and the impeller 810 rotates synchronously with the terminal 831 ; the mixing flow meter 8 detects the rotation speed of the terminal 831 to determine the rotation speed of the impeller 810 .

[0054] In an embodiment of the present invention, the impeller 810 includes a rotating shaft 812, which is rotatably disposed in the metering chamber 801, and both ends of the rotating shaft 812 are respectively rotatably connected to the chamber wall of the metering chamber 801; blades 811 are arranged along the circumference of the rotating shaft 812 and are disposed on the rotating shaft 812, and each blade 811 extends along the radial direction of the rotating shaft 812.

[0055] In the embodiment of the present invention, the terminal 831 is disposed on the rotating shaft 812 .

[0056] In the embodiment of the present invention, the portion where the rotating shaft 812 is connected to the blade 811 is spaced a certain distance from one end of the rotating shaft 812 , and the terminal 831 is disposed at the spaced position.

[0057] In an embodiment of the present invention, a radially protruding driving portion 813 is provided at the spaced position of the rotating shaft 812, and the terminal 831 is shaped and fitted onto the driving portion 813; when the rotating shaft 812 rotates, the driving portion 813 drives the terminal 831 to rotate through the supporting force of the protruding portion on the terminal 831, thereby ensuring that the terminal 831 and the rotating shaft 812 rotate synchronously, avoiding sliding friction between the terminal 831 and the rotating shaft 812, and causing inaccurate flow detection by the mixing flowmeter 8.

[0058] In the embodiment of the present invention, the cross section of the driving portion 813 is elliptical, and an elliptical through hole of the same shape is correspondingly provided in the middle of the terminal 831 .

[0059] In the embodiment of the present invention, the driving portion 813 is coaxially disposed with the rotating shaft 812 .

[0060] In the embodiment of the present invention, the dosing device at least includes an additive dosing waterway, which is connected to the water mixing branch 2. Among them, multiple additive dosing waterways can be set according to the type of additives. The additives can be detergents, softeners, renovation agents, disinfectants, and all other detergents that can be used in the main washing process.

[0061] In the embodiment of the present invention, each additive delivery water channel is provided with a one-way valve 7 at the connection point with the water mixing branch 2, and the conducting direction of the one-way valve 7 is directed from the additive delivery water channel to the water inlet water channel. According to the selection of the corresponding washing program, the corresponding one-way valve 7 is controlled to be conducted, so as to be premixed with the water flow in the water inlet water channel, so that the detergent can be mixed in the delivery device, and the detergent mixed liquid can be delivered into the corresponding connected washing machine along with the external tap water.

[0062] In the embodiment of the present invention, the water inlet branch 1, the water outlet branch 3 and the water mixing branch 2 located therebetween constitute a water inlet waterway, and the tap water and detergent are mixed in the entire water inlet waterway and flow out from the water outlet branch 3.

[0063] However, the conventional water inlet waterway is provided with a flow meter or a pressure sensor 6 in the path through which the liquid flows, and the water volume or water pressure is detected by the flow meter or the pressure sensor 6. When the corresponding threshold is reached, an alarm will be issued to remind the user or the manager that the water inlet waterway in the delivery device is faulty. However, due to the lack of timely adjustment and control of the water inlet waterway, the water pressure in the water inlet waterway may be too high, breaking through the one-way valve 7 or other components provided at the connection between the water inlet waterway and the additive delivery waterway. Alternatively, by giving an alarm and shutting down the delivery action in time, the washing action of the clothes will also be delayed due to the start and stop action of the entire waterway, causing inconvenience to the user.

[0064] In order to overcome the above-mentioned defects, the present invention makes corresponding improvements:

[0065] In an embodiment of the present invention, a pressure relief component 5 is further included. The pressure relief component 5 is rotatably arranged at the connection between the water inlet branch 1 and the water mixing branch 2, and is used to change the opening cross-section of the connection between the water inlet branch 1 and the water mixing branch 2 and adjust the liquid flow pressure of the water mixing branch 2.

[0066] In the embodiment of the present invention, the pressure relief member 5 is rotatably arranged on the water inlet branch 1 and the water mixing branch 2, and the size of the opening cross-section of the connection is controlled by the rotation of the pressure relief member 5. In the application process of the specific delivery device, when the water volume or water pressure of the water inlet waterway is too large, the rotation angle of the pressure relief member 5 is timely adjusted, so that the flow rate of the water flow passing through the connection is restricted to a certain extent, thereby effectively changing the flow pressure of the liquid on the water mixing branch 2. Then, when the water flow rate or water pressure changes, timely adjustment is made to avoid the breakdown of the one-way valve 7 or other components arranged at the connection between the water inlet waterway and the additive delivery waterway, and effectively ensure the normal delivery of tap water and detergent to the mixing branch.

[0067] In the embodiment of the present invention, the pressure relief member 5 is a plate-like structure, and the outer peripheral wall of the pressure relief member 5 is sealed against the side wall of the opening at the connection, and the size of the opening cross-section of the connection can be adjusted by rotation, thereby adjusting the flow rate of the water flow.

[0068] In an embodiment of the present invention, the connection between the water inlet branch 1 and the water mixing branch 2 has an angle; a water hole 51 is provided in the pressure relief member 5, the water inlet end 511 of the water hole 51 is connected to the water inlet branch 1, and the water outlet end 512 of the water hole 51 is connected to the water mixing branch 2.

[0069] In the embodiment of the present invention, the included angle is a right angle.

[0070] In an embodiment of the present invention, a through water hole 51 is provided inside the pressure relief member 5. In the initial state, the water inlet end 511 of the water hole 51 is connected to the end of the water inlet branch 1, and the water outlet end 512 of the water hole 51 is connected to the end of the water mixing branch 2, so that in the normal water outlet state, the water hole 51 is connected to the entire water inlet waterway, ensuring that the external tap water can be normally transported in the water inlet waterway. The water inlet branch 1 is connected to the side wall of the water mixing branch 2 at an angle, preferably at an angle of 90°, and the extension directions of the water inlet end 511 and the water outlet end 512 of the water hole 51 of the pressure relief member 5 are respectively consistent with the extension directions of the water inlet branch 1 and the water mixing branch 2, so that it can be ensured that the water flow under normal water volume or water pressure can flow smoothly, and there will be no resistance to cause disturbance and backflow, which affects the normal water inlet.

[0071] In the embodiment of the present invention, the outer peripheral wall of the pressure relief member 5 is provided with a rotation seal with the side wall of the connection between the water inlet branch 1 or the water mixing branch 2 or both.

[0072] In an embodiment of the present invention, the pressure relief component 5 serves as a flow control component of the water inlet branch 1 or the water mixing branch 2, and the outside of the pressure relief component 5 and the inner wall of the water inlet branch 1 or the water mixing branch 2 need to be sealed to ensure that the pressure relief component 5 does not leak during rotation.

[0073] In the embodiment of the present invention, the outer peripheral wall of the pressure relief member 5 rotates around the axis of the water inlet branch 1 or the axis of the water mixing branch 2, and the water inlet end 511 can be at least partially or completely offset from the water inlet branch 1.

[0074] In an embodiment of the present invention, the pressure relief member 5 is a columnar structure, and its rotation axis coincides with the axis of the water inlet branch 1 or the axis of the water mixing branch 2. Taking the case where the rotation axis of the pressure relief member 5 coincides with the axis of the water mixing branch 2 as an example, the outer peripheral wall of the pressure relief member 5 is sealed with the inner wall of the water inlet branch 1 and can rotate along the axis of the water mixing branch 2. In the initial assembly state, the outer peripheral wall of the pressure relief member 5 has a water inlet end 511 of the water through hole 51, and a water outlet end 512 is provided on the end face close to the water mixing branch 2, and the water inlet end 511 and the water outlet end 512 are bent inside the pressure relief member 5 to extend out of the water through hole 51. And the water inlet end 511 corresponds to the pipeline opening of the water inlet branch 1.

[0075] According to the above arrangement, when the pressure relief member 5 is axially rotated, the water inlet end 511 gradually staggers with the pipeline opening of the water inlet branch 1, that is, the water flow rate entering the water mixing branch 2 is gradually reduced. When the water pressure or water flow rate of the water inlet branch 1 is too large, the axial angle of the pressure relief member 5 is rotated, and the water flow rate or water pressure can be controlled by staggering the water inlet end 511 of the water hole 51 with the pipeline opening on the water inlet branch 1, thereby preventing the water mixing branch 2 or the one-way valve 7 installed thereon and other components from being damaged or burst by impact.

[0076] In an embodiment of the present invention, a driving mechanism 4 is further included, wherein a driving end of the driving mechanism 4 is coaxially connected to an end of the pressure relief member 5 to change a relative angle between the water inlet end 511 of the pressure relief member 5 and the water inlet branch 1 .

[0077] In an embodiment of the present invention, a driving mechanism 4 is provided to connect the end of the pressure relief member 5, thereby driving the pressure relief member 5 to rotate, thereby realizing an opening cross-section at the connection between the water inlet end 511 of the water hole 51 and the water inlet branch 1 or the mixing water branch 2 or the two.

[0078] In the embodiment of the present invention, the driving mechanism 4 can be a motor, preferably a servo motor, which can accurately control the rotation angle of the pressure relief member 5 to ensure the water flow through the water mixing branch 2, thereby ensuring that the subsequent detergent delivery operation is carried out normally.

[0079] In the embodiment of the present invention, a pressure sensor 6 is provided in the water outlet branch 3 , and the pressure sensor 6 is provided close to one side of the water mixing branch 2 .

[0080] In the embodiment of the present invention, a pressure sensor 6 is arranged on the inner wall of the water outlet branch 3, wherein the pressure sensor 6 is arranged on the upper half of the inner wall and on a side close to the water outlet branch 3. With this arrangement, on the one hand, during the process of rotating the angle between the water hole 51 of the pressure relief member 5 and the pipe opening of the water inlet branch 1, the pressure will change due to the change in the size of the caliber, and the arrangement of the pressure sensor 6 here will result in the water pressure detected by the pressure sensor 6 not representing the actual water pressure in the water mixing branch 2. After the pressure sensor 6 is arranged on the side close to the water outlet branch 3, the actual outlet water pressure can be more accurately reflected.

[0081] In an embodiment of the present invention, the water outlet branch 3 has a first water outlet branch 301 extending parallel to the mixed water channel 2, and a second water outlet branch 302 extending from the end of the first water outlet branch 301, forming a bent water outlet branch 2; the pressure sensor 6 is arranged at the connection between the first water outlet branch 301 and the second water outlet branch 301; preferably, the pressure sensor 6 is arranged on the side wall located on the outside of the bending part of the water outlet branch 3.

[0082] In an embodiment of the present invention, a mounting seat 11 is provided at the water outlet end 512 of the water inlet branch 1, and a mounting cavity 114, a rotating shaft cavity 115 and a water outlet cavity 116 are sequentially provided in the mounting seat 11 along the liquid flow direction in the mixing water branch 2, and the aperture size of each cavity decreases sequentially.

[0083] In an embodiment of the present invention, a mounting seat 11 connected to the interior of the water inlet branch 1 is provided at the top, and the mounting seat 11 is integrally formed with the water inlet branch 1. A plurality of threaded holes are provided on the outside of the mounting seat 11, and the mounting seat 11 is fixedly connected to the housing of the delivery device by screws. The mounting seat 11 is provided with a mounting cavity 114, a rotating shaft cavity 115, and a water outlet cavity 116, whose apertures decrease successively along the direction of the mixed water branch 2. By changing the aperture, the interior of the mounting seat 11 presents a step-like change trend. There are protruding step surfaces between the mounting cavity 114 and the rotating shaft cavity 115, and between the rotating shaft cavity 115 and the water outlet cavity 116, so that the motor can be installed in the mounting cavity 114, and the pressure relief member 5 can be rotatably installed in the rotating shaft cavity 115, and the motor and the pressure relief member 5 can be positioned by the step surface formed by the change in aperture.

[0084] In the embodiment of the present invention, a first positioning ring 117 is provided at the transition between the installation cavity 114 and the shaft cavity 115 , and the first positioning ring 117 extends from the connection portion toward the installation cavity 114 .

[0085] In an embodiment of the present invention, a first positioning ring 117 is provided on the periphery of the stepped table formed at the transition between the installation cavity 114 and the shaft cavity 115, wherein the first positioning ring 117 extends in a direction away from the mixed water branch 2 to form a first annular groove. A first annular protrusion corresponding to the first annular groove is provided on the housing of the motor, and when installing the motor, the first annular protrusion can be inserted into the first annular groove to complete the positioning and limiting function of the motor installation. The first annular protrusion and the first annular groove are interference fits, ensuring that the motor has a certain friction after being inserted into the installation cavity 114, so as not to loosen or fall off.

[0086] In the embodiment of the present invention, a second positioning ring 118 is provided at the transition between the shaft cavity 115 and the water outlet cavity 116 , and the second positioning ring 118 extends from the connection point toward the shaft cavity 115 ; the pressure relief member 5 is at least partially rotationally sealed with the shaft cavity 115 .

[0087] In an embodiment of the present invention, a second positioning ring 118 is provided at the outermost periphery of the stepped table formed at the transition between the rotating shaft cavity 115 and the water outlet cavity 116. The second positioning ring 118 extends in a direction away from the mixed water branch 2 to form a second annular groove. A second annular protrusion corresponding to the second annular groove is provided at the end of the pressure relief member 5, so that when the pressure relief member 5 is installed in the rotating shaft cavity 115 of the mounting seat 11, the positioning and limiting effect of the pressure relief member 5 during installation can be guaranteed. The second annular protrusion and the second annular groove are clearance-fitted, and a rotational seal is formed between the outer peripheral wall of the pressure relief member 5 and the side wall of the rotating shaft cavity 115, thereby ensuring the positioning and sealing effect of the pressure relief member 5 in the rotating shaft cavity 115.

[0088] In the embodiment of the present invention, the end of the pressure relief member 5 can be narrowed and extended into the water outlet chamber 116 , and the extended portion is rotatably sealed and connected to the side wall of the water outlet chamber 116 .

[0089] In the embodiment of the present invention, the outer peripheral wall of the mounting seat 11 is configured to be a first wall 111, a second wall 112 and a third wall 113, the outer diameters of which decrease in sequence, wherein the third wall 113 is circular in longitudinal section and can be plugged or docked to the pipe opening of the water mixing branch 2, and a sealing ring groove 1131 is provided on the outer periphery of the third wall 113, and a sealing ring is sleeved in the sealing ring groove 1131. A step surface is formed at the connection between the first wall 111 and the second wall 112, and a step surface is also formed at the connection between the second wall 112 and the third wall 113, and the step surface is provided to match the installation part of the shell of the delivery device to ensure accurate positioning.

[0090] In an embodiment of the present invention, a washing machine is further provided, on which any of the above-mentioned dispensing devices is provided; or, the washing machine is provided with an external water pipe, which is connected to the water outlet branch 3 of any of the above-mentioned dispensing devices. The water inlet branch 1 of the dispensing device is connected to the external tap water, and the water outlet branch 3 is connected to the external water pipe drawn from the inside of the washing machine. That is, at this time, the dispensing device can be used as a separate device, which is connected to the external tap water pipe and the external water pipe of the washing machine through water pipes, which is an external setting. Another preferred embodiment integrates the dispensing device into the washing machine. Through the design of the pipeline, the water outlet branch of the dispensing device directly leads to the inside of the washing machine, and the water inlet branch of the dispensing device is connected to the external tap water pipe, which is an integrated setting.

[0091] In an embodiment of the present invention, a plurality of one-way valves 7 arranged on the water mixing branch 2 may be electromagnetic one-way valves 7, which may control the corresponding detergents to be added to the water mixing branch 2 corresponding to different washing programs in the washing machine, and then the detergents added to the water mixing branch 2 are rinsed and mixed by the tap water of the water inlet branch 1, and then added to the washing machine through the water outlet branch 3.

[0092] In the embodiment of the present invention, when the pressure sensor 6 in the water mixing branch 2 detects that the water pressure is too high, the pressure relief member 5 is rotated and adjusted relative to the water inlet branch 1 by controlling the motor, so that the water hole 51 is staggered with the pipe mouth of the water inlet branch 1, thereby reducing the water flow and thus reducing the overall water pressure. When the pressure sensor 6 detects that the pressure is too low or there is no pressure, it means that the water flow is too small at this time, and the motor can be reversed to rotate the pressure relief member 5 to increase the water flow of the water mixing branch 2 and ensure the water pressure.

[0093] In an embodiment of the present invention, the placing device is built inside the washing machine.

[0094] In the embodiment of the present invention, the delivery device is an external delivery device, which is arranged outside the washing machine; preferably, the water outlet branch 3 of the delivery device is connected to multiple washing machines.

[0095] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above in the preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A dosing device, comprising a water inlet branch (1), a water mixing branch (2) and a water outlet branch (3) connected in sequence, wherein water introduced from the water inlet branch (1) and extracted detergent are mixed in the water mixing branch (2) and flow out from the water outlet branch (3); It is characterized in that It also includes a mixing flowmeter (8) connected in series between the water mixing branch (2) and the water outlet branch (3), wherein an impeller (810) driven to rotate by the incoming water is arranged inside, and a mixing structure (820) having an uneven surface is arranged on the impeller (810).

2. A delivery device according to claim 1, characterized in that: The impeller (810) is provided with a sheet-like blade (811) extending outwardly along the axis, and an outer peripheral edge of the blade (811) is provided with a first mixing structure (820) protruding outward or recessed outward.

3. A delivery device according to claim 2, characterized in that: A plurality of first mixing structures (820) protruding outward are arranged on the end surfaces of the edges on both sides of the blade (811), and the plurality of first mixing structures (820) are combined to form a serrated side edge of the blade (811).

4. A delivery device according to claim 3, characterized in that: The outer end surface of the first mixing structure (820) is arranged as a plane parallel to the end surface on the corresponding side of the blade (811), forming a boss-type mixing structure (820).

5. A delivery device according to claim 3, characterized in that: The first mixing structures (820) are arranged at a certain distance from each other.

6. According to the delivery device of claim 2, a second mixing structure (820) is provided on the end surface of the extension end of the blade (811) and protrudes from both sides to the middle in the extension direction.

7. A delivery device according to any one of claims 1 to 6, characterized in that: A metering chamber (801) connected to the water mixing branch (2) and the water outlet branch (3) is arranged inside the mixing flow meter (8); an impeller (810) is rotatably arranged in the metering chamber (801); and an outer peripheral edge of the impeller (810) is arranged at a certain distance from a chamber wall of the metering chamber (801).

8. A delivery device according to claim 7, characterized in that: The metering chamber (801) is a columnar structure; the extension directions of the water mixing branch (2) and the water outlet branch (3) are parallel to each other and are respectively arranged perpendicular to the axis of the columnar metering chamber (801); and the impeller (810) is coaxially arranged with the metering chamber (801).

9. A delivery device according to claim 8, characterized in that: The extension direction of the water mixing branch (2) is staggered with the axis of the metering chamber (801), and the water outlet branch (3) and the water mixing branch (2) are respectively located on the same side of the axis of the metering chamber (801).

10. A delivery device according to claim 7, characterized in that: One side pipe wall of the water outlet branch (3) is tangentially connected to the chamber wall of the metering chamber (801).

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