Hydraulic pump, detergent putting device and control method

Abstract

The invention discloses a water pressure pump, a detergent putting device and a control method. The water pressure pump comprises a pump shell, a water pump, a water pump and a water pump, the pump membrane is arranged in the pump cavity in a deformable manner and divides the pump cavity into a first pump cavity and a second pump cavity which are not communicated with each other; the first pump cavity is provided with a water inlet hole and a water outlet hole which are communicated with the cavity and the outside; and the second pump cavity is provided with a liquid inlet hole and a liquid outlet hole which can unidirectionally communicate the cavity with the outside. The pump cavity is divided into the first pump cavity and the second pump cavity through the pump membrane, the pump membrane is impacted to generate deformation by switching on or off water flow to the first pump cavity, and then the internal pressure of the second pump cavity is changed, so that the action of pumping and putting a detergent in the second pump cavity is periodically realized, and pumping is continuous and stable; in addition, a motor and a transmission assembly are not arranged to achieve driving, the structure is simplified, the overall size and weight are small, and potential safety hazards such as fire catching do not exist.

Description

Technical Field

[0001] The present invention belongs to the technical field of clothing processing, and in particular, relates to a water pressure pump, a detergent dispensing device and a control method. Background Art

[0002] Traditional power equipment such as air pumps, vacuum pumps, liquid pumps, etc., require the use of motors and transmission structures, which will result in the overall size and weight of the equipment being too large. There are also problems with noise and vibration caused by the rotation of the motor.

[0003] At present, the pumps used in the washing industry are basically driven by electrical components such as motors. Common pumps include piston pumps, peristaltic pumps, gear pumps, etc., all of which require motors to provide driving force. However, the vibration of the motor reduces the safety and reliability of the pump, and the quality cannot be guaranteed. In addition, due to the pumping of liquids such as detergents, fire and other safety hazards are prone to occur.

[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 water pressure pump, which divides the pump chamber into a first pump chamber and a second pump chamber by a pump membrane, and deforms the pump membrane by interrupting the water flow to the first pump chamber, thereby changing the internal pressure of the second pump chamber, thereby periodically realizing the actions of extracting and adding detergent in the second pump chamber, and the pumping is continuous and stable; in addition, no motor or transmission assembly is set to achieve drive, the structure is simplified, the overall volume and weight are small, and there are no safety hazards such as fire.

[0006] Another object of the present invention is to provide a detergent dispensing device.

[0007] Another object of the present invention is to provide a control method.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: to provide a water pressure pump, including a pump housing having a pump cavity inside;

[0009] A pump membrane is deformably disposed in the pump chamber to separate the pump chamber into two mutually unconnected first pump chamber and second pump chamber;

[0010] The first pump chamber is provided with a water inlet hole and a water outlet hole connecting the chamber with the outside;

[0011] The second pump chamber is provided with a liquid inlet hole and a liquid outlet hole which can unidirectionally conduct liquid between the chamber and the outside.

[0012] Furthermore, a retaining ring connected to the water inlet is provided in the first pump chamber, extending along the inner wall of the first pump chamber toward the diaphragm and abutting against its end surface, thereby closing the channel between the water inlet and the water outlet.

[0013] Furthermore, the water inlet hole is arranged on the end surface of the first pump cavity, and the water outlet hole is arranged on the outer periphery of the first pump cavity, and the extension direction of the water inlet hole is perpendicular to the extension direction of the water outlet hole.

[0014] Furthermore, a reset component that can be extended and retracted along the direction of deformation of the pump membrane is provided in the second pump chamber, one end of which is connected to the side wall of the pump membrane and the other end of which is connected to the side wall of the second pump chamber.

[0015] Further, the reset component includes,

[0016] A guide sleeve, one end of which is connected to the side wall of the pump membrane, and the other end of which protrudes outward from the connection;

[0017] A guide post, one end of which is connected to the side wall of the second pump chamber, and the other end of which protrudes outward from the connection and is plugged into the guide sleeve;

[0018] The telescopic spring is sleeved on the outer side of the guide column, and its two ends are respectively against the pump membrane and the side wall of the second pump chamber.

[0019] Further, the pump membrane comprises,

[0020] A contact portion, wherein a contact end surface of the contact portion is directly opposite to the retaining ring;

[0021] The deformation part has one end connected to the side wall of the contact part and the other end connected to the side wall of the pump chamber, and the deformation part has at least one bending part.

[0022] Furthermore, the thickness of the contact portion is greater than the thickness of the deformation portion;

[0023] Alternatively, the thickness of the pump membrane gradually decreases in a direction extending from the contact portion toward the deformation portion.

[0024] The present invention also provides a detergent dispensing device, having any of the above-mentioned water pressure pumps, comprising a water supply channel for supplying water to flow through;

[0025] A liquid storage chamber storing detergent;

[0026] A water delivery channel, used for delivering the detergent in the liquid storage chamber to the outside;

[0027] The liquid inlet of the hydraulic pump is connected to the liquid storage cavity, and the liquid outlet is connected to the water delivery channel;

[0028] The water inlet and outlet of the hydraulic pump are respectively connected to the water supply circuit.

[0029] The present invention also provides a control method for the detergent dispensing device described above, which specifically comprises the following steps:

[0030] The water inlet is turned on, and the water flows in from the water inlet hole and impacts the pump membrane to cause deformation, and the liquid outlet hole of the second pump chamber releases detergent outward;

[0031] The water inlet flow is closed, the pump membrane recovers its deformation, and the liquid inlet hole of the second pump chamber draws detergent.

[0032] Furthermore, the water inlet flow is controlled to become larger, the water flow pressure is increased, the water enters from the water inlet hole and impacts the pump membrane to cause deformation, and the liquid outlet hole of the second pump chamber releases detergent outward;

[0033] The water inlet flow is controlled to become smaller, the water flow pressure is reduced, the pump membrane recovers its deformation, and the liquid inlet hole of the second pump chamber extracts detergent.

[0034] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0035] (1) The present invention divides the pump chamber into a first pump chamber and a second pump chamber by setting a pump membrane in the pump chamber. The pump membrane is deformed by introducing water into the water inlet of the first pump chamber, or the water flow is turned off to restore the deformation of the pump membrane, thereby changing the pressure in the second pump chamber. The detergent can be extracted and added into the second pump chamber, and the entire pumping process is continuous and reliable. In addition, no transmission components such as motors are set, the size and weight of the pump body are small, and there are no safety hazards such as conductive fire.

[0036] (2) In the present invention, a retaining ring connected to the water inlet is disposed in the first pump chamber. The retaining ring extends along the inner wall of the first pump chamber toward the diaphragm and abuts against its end face. When the entire water pressure pump is not in operation, the water inlet and the water outlet are not connected, thereby effectively preventing the backflow of water or avoiding leakage due to a pressure difference between the water inlet and the water outlet.

[0037] (3) The present invention provides a reset component in the second pump chamber that can be extended and retracted along the direction of the pump membrane deformation, thereby driving or assisting the pump membrane to restore its deformation, thereby making the volume in the second pump chamber increase from small to large and the pressure decrease. The external detergent is automatically drawn into the second pump chamber under the action of the pressure difference.

[0038] (4) In the present invention, the thickness of the contact portion of the pump membrane is greater than the thickness of the deformation portion, which can ensure that when the water flow impacts the contact portion, the deformation of the contact portion is small or almost non-deformed, so that it can be fully impacted by the water flow, so that the contact portion of the entire pump membrane moves horizontally in the direction of the water flow, and the change in the internal volume of the second pump chamber is uniform, and the pressure change at various locations in the second pump chamber is also uniform, thereby making the action of adding detergent more stable.

[0039] (5) In the present invention, the thickness of the pump membrane gradually decreases in the direction extending from the contact portion to the deformation portion, so that when the impact force of the water flow is transmitted to the pump membrane, the deformation of the entire pump membrane is more stable and uniform, so that the pressure change in the second pump chamber is more uniform, which makes the action of injecting detergent from the liquid outlet continuous, more stable and reliable, and there will be no inconsistent dosage of detergent injected each time.

[0040] 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

[0041] 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:

[0042] Figure 1 It is a three-dimensional structural schematic diagram of a water pressure pump of the present invention;

[0043] Figure 2 is a cross-sectional view of a water pressure pump of the present invention;

[0044] Figure 3 is an internal cross-sectional view of a water pressure pump of the present invention;

[0045] Figure 4 It is a schematic diagram of the explosion structure of a water pressure pump of the present invention;

[0046] Figure 5 This is a pipe connection diagram of one embodiment of a detergent dispensing device of the present invention;

[0047] Figure 6 is a flow chart of a control method of the present invention;

[0048] Figure 7 It is a flow chart of a control method of the present invention.

[0049] In the figure: 1. pump housing; 11. first pump chamber; 111. water inlet hole; 112. water outlet hole; 12. second pump chamber; 121. liquid outlet hole; 122. liquid inlet hole; 2. reset assembly; 21. guide sleeve; 22. telescopic spring; 23. guide column; 3. support plate; 4. pump membrane; 41. contact portion; 411. positioning hole; 412. screw hole; 42. first deformation portion; 43. bending portion; 44. second deformation portion; 5. positioning column; 51. reinforcing rib; 52. interval; 53. screw column; 6. check valve.

[0050] 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

[0051] 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.

[0052] 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.

[0053] 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.

[0054] like Figures 1 to 7 As shown, a water pressure pump according to the present invention comprises a pump housing 1, which has a pump cavity inside;

[0055] The traditional pump is set up with a pump membrane 4 inside the pump chamber, which can deform or slide relative to the pump chamber to change the chamber volume of the pump chamber. The deformation or sliding action of the pump membrane 4 is driven by a motor to drive the piston rod or other transmission components, thereby pulling the pump membrane 4 to deform or slide, and then changing the chamber volume of the pump chamber to perform the detergent delivery and extraction operation. However, due to the motor, transmission components, etc., the volume and weight of the entire pump body are relatively large, and the vibration of the motor drives the detergent to be pumped, which makes the operation reliability low and there are also safety hazards.

[0056] In order to overcome the above-mentioned defects, the present invention makes corresponding improvements.

[0057] Furthermore, the pump membrane 4 is deformably disposed in the pump chamber to separate the pump chamber into two mutually unconnected first pump chamber 11 and second pump chamber 12;

[0058] The first pump chamber 11 is provided with a water inlet 111 and a water outlet 112 which communicate the chamber with the outside;

[0059] The second pump chamber 12 is provided with a liquid inlet 122 and a liquid outlet 121 which can unidirectionally conduct the liquid between the chamber and the outside.

[0060] In the present invention, a pump membrane 4 perpendicular to the water inlet direction of the pump chamber is provided in the pump chamber, so that the pump chamber is divided into two, namely, a first pump chamber 11 and a second pump chamber 12. The first pump chamber 11 is provided with a water inlet hole 111 and a water outlet hole 112, respectively, and the water inlet hole 111 and the water outlet hole 112 form a connected water flow channel in the first pump chamber 11. The second pump chamber 12 is provided with a liquid inlet hole 122 and a liquid outlet hole 121, respectively, and the liquid inlet hole 122 and the liquid outlet hole 121 are unidirectional conductive through holes, and the conductive directions are opposite, so as to realize the action of adding detergent and dispensing detergent in the second pump chamber 12.

[0061] In the specific implementation, when the water flows into the first pump chamber 11 through the water inlet hole 111, the impact of the water flow can impact the deformable pump membrane 4, so that the pump membrane 4 deforms into the second pump chamber 12, that is, the volume of the second pump chamber 12 decreases, and the internal pressure increases, so that the liquid outlet hole 121 can be connected to realize the operation of putting detergent into the outside. When the water flow into the water inlet hole 111 stops, the pump membrane 4 recovers its deformation, and the volume of the second pump chamber 12 increases from the bottom, and the internal pressure decreases, so that the detergent from the outside can be extracted to replenish the detergent in the second pump chamber 12. The entire pumping and extraction of detergent in the second pump chamber 12 is achieved by the change of the pressure of the water flow in the first pump chamber 11 on the pump membrane 4. Since the entire hydraulic pump is not provided with a motor and related transmission components, the volume and weight of the hydraulic pump are relatively small, and there is no motor, the entire pumping action is more stable and reliable, and there is no safety hazard such as fire. The entire hydraulic pump structure is relatively simple and the cost is low.

[0062] Furthermore, a retaining ring 13 connected to the water inlet hole 111 is provided in the first pump chamber 11 , extending along the inner wall of the first pump chamber 11 toward the diaphragm and abutting against its end surface, thereby closing the channel between the water inlet hole 111 and the water outlet hole 112 .

[0063] In the present invention, a retaining ring 13 is provided on the inner wall of the first pump chamber 11, and the central through hole of the retaining ring 13 is connected to the water inlet hole 111. Preferably, the retaining ring 13 is concentrically arranged with the water inlet hole 111. The retaining ring 13 extends along the water inlet direction of the water inlet hole 111 toward the direction close to the diaphragm and abuts against the end face of the diaphragm, so that the water inlet hole 111 is blocked at one end by the retaining ring 13, and is then isolated from the water outlet hole 112. When the entire hydraulic pump is not in operation, the water inlet hole 111 and the water outlet hole 112 are in a non-connected setting, which effectively prevents the backflow of water flow, or avoids the pressure difference between the water inlet hole 111 and the water outlet hole 112 and the occurrence of leakage.

[0064] Furthermore, the water inlet hole 111 is disposed on the end surface of the first pump chamber 11 , and the water outlet hole 112 is disposed on the outer periphery of the first pump chamber 11 , and the extension directions of the water inlet hole 111 and the water outlet hole 112 are perpendicular.

[0065] In the present invention, a horizontally extending water inlet hole 111 is provided on the end surface of the first pump chamber 11, and a water outlet hole 112 is provided on the outer peripheral wall of the first pump chamber 11, which is perpendicular to the extending direction of the water inlet hole 111. There can be multiple water outlet holes 112, which are arranged around the outer peripheral wall of the first pump chamber 11 at equal intervals. After water flows into the water inlet hole 111, water can be discharged from the water outlet holes 112 in multiple directions to prevent water from accumulating in the first pump chamber 11.

[0066] Furthermore, a reset assembly 2 which can be extended and retracted along the deformation direction of the pump membrane 4 is provided in the second pump chamber 12 , one end of which is connected to the side wall of the pump membrane 4 , and the other end of which is connected to the side wall of the second pump chamber 12 .

[0067] In the present invention, a reset component 2 that can be extended and retracted along the deformation direction of the pump membrane 4 (the direction of water flow impact) is provided in the second pump chamber 12, so as to provide a restoring force for the pump membrane 4 or assist the recovery of the deformation of the pump membrane 4. Specifically, the reset component 2 can be any component or assembly with lateral extension and deformation, wherein the two ends are respectively connected to the pump membrane 4 and the inner wall of the second pump chamber 12. The reset component 2 can be one or more springs, telescopic rods or bendable springs, etc.

[0068] Further, the reset component 2 includes,

[0069] A guide sleeve 21, one end of which is connected to the side wall of the pump membrane 4, and the other end of which protrudes outward from the connection;

[0070] A guide post 23, one end of which is connected to the side wall of the second pump chamber 12, and the other end of which protrudes outward from the connection and is plugged into the guide sleeve 21;

[0071] The telescopic spring 22 is sleeved on the outside of the guide pillar 23 , and its two ends are respectively against the pump membrane 4 and the side wall of the second pump chamber 12 .

[0072] In the present invention, the reset assembly 2 includes a guide post 23, a guide sleeve 21, and a telescopic spring 22 disposed therebetween. The guide sleeve 21 or the guide post 23 is disposed at the center of the pump membrane 4, and the guide post 23 or the guide sleeve 21 is disposed on the inner wall of the second pump chamber 12 opposite thereto, and the telescopic spring 22 is disposed therebetween. The telescopic spring 22 can be sleeved on the outside of the guide post 23, and extend into the inside of the guide sleeve 21 to abut against the side wall of the pump membrane 4 or the second pump chamber 12; or, if the outer diameter of the telescopic spring 22 is greater than the outer diameter of the guide sleeve 21, the entire spring is sleeved on the outside of the guide post 23 and the guide sleeve 21, and abuts against the side wall of the pump membrane 4 and the second pump chamber 12, respectively.

[0073] During operation, the pump membrane 4 is deformed by the impact of the water flow, and the telescopic spring 22 is compressed. When the water is stopped from flowing into the water inlet 111, the pump membrane 4 recovers its deformation under the elastic force of the telescopic spring 22. This can drive or assist the pump membrane 4 to recover its deformation, and further, the volume in the second pump chamber 12 can be increased from small to large, the pressure can be reduced, and the external detergent can be drawn into the second pump chamber 12 under the action of the pressure difference.

[0074] Further, the pump membrane 4 comprises,

[0075] A contact portion 41, wherein a contact end surface of the contact portion 41 is directly opposite to the retaining ring 13;

[0076] The deformation portion has one end connected to the side wall of the contact portion 41 and the other end connected to the side wall of the pump chamber. The deformation portion has at least one bending portion 43 .

[0077] In the present invention, the pump membrane 4 includes a contact portion 41 disposed at the front end, and the cross section of the contact portion 41 is circular. Since the baffle ring 13 is disposed opposite to the end face of the contact portion 41 of the diaphragm, the water flowing into the water inlet hole 111 and passing through the baffle ring 13 can directly act vertically on the contact portion 41 of the diaphragm, and the acting force is large, ensuring that the deformation of the diaphragm is large, thereby compressing the volume of the second pump chamber 12, and the internal pressure of the second pump chamber 12 increases, thereby ensuring that the detergent inside is discharged from the liquid outlet hole 121.

[0078] The pump membrane 4 also includes a deformation portion, and the entire deformation portion has greater elasticity. Specifically, the deformation portion includes a first deformation portion 42, a bending portion 43, and a second deformation portion 44, wherein the first deformation portion 42 is an annular structure, connected along the outer edge of the contact portion 41, so that the longitudinal section after the two are connected is U-shaped, and the opening of the U-shape faces the second pump chamber 12, which can make the volume of the second pump chamber 12 larger. One end of the second deformation portion 44 is connected to the side wall of the pump chamber, and the other end has at least one bending portion 43 at the connection with the first deformation portion 42. Specifically, the second deformation portion 44 is concentrically arranged with the first deformation portion 42, and both are annular structures, and a bending portion 43 with an arc is arranged at the connection between the two, so that the entire pump membrane 4 is easier to deform in the direction of water flow, and the deformation amount is larger, thereby ensuring the pumping liquid requirements of the second pump chamber 12.

[0079] Furthermore, the thickness of the contact portion 41 is greater than the thickness of the deformation portion;

[0080] Alternatively, the thickness of the pump membrane 4 gradually decreases in the direction in which the pump membrane 4 extends from the contact portion 41 toward the deformation portion.

[0081] In the present invention, the contact portion 41 is thicker than the deformation portion. This arrangement can ensure that when the water flow impacts the contact portion 41, the deformation of the contact portion 41 is small or almost non-deformed, so that it can be completely impacted by the water flow, so that the contact portion 41 of the entire pump membrane 4 moves horizontally in the direction of the water flow, so that the change in the internal volume of the second pump chamber 12 is uniform, and the pressure change at various locations in the second pump chamber 12 is also uniform, thereby making the action of adding detergent more stable.

[0082] Since the thickness of the deformation part is relatively small, when the contact part 41 is impacted by water flow, the deformation position mainly occurs at the deformation part. Combined with the contact part 41, it can be ensured that after the entire water flow impacts the pump membrane 4, the overall deformation of the pump membrane 4 is uniform and reliable.

[0083] Alternatively, in another preferred embodiment, the contact portion 41 and the deformation portion are integrally formed, and the overall length from the contact portion 41 to the connection end of the deformation portion and the pump chamber side wall is gradually reduced. This arrangement allows the entire pump membrane 4 to deform more stably and evenly when the impact force of the water flow is transmitted to the pump membrane 4, so that the pressure change in the second pump chamber 12 is more uniform, which makes the action of dispensing detergent from the liquid outlet 121 continuous, more stable and reliable, and does not cause inconsistent dosage of detergent each time.

[0084] Furthermore, a support plate 3 is disposed between the pump membrane 4 and the guide sleeve 21 , and the support plate 3 is disposed in contact with at least the contact portion 41 of the pump membrane 4 .

[0085] In the present invention, a support plate 3 is provided between the pump membrane 4 and the guide sleeve 21, and the support plate 3 is made of a rigid material. The support plate 3 is at least arranged to fit the contact portion 41 of the pump membrane 4. Preferably, the support plate 3 and the contact portion 41 of the pump membrane 4 are completely fitted, that is, the areas of the two are the same. Of course, the support plate 3 can also form a bowl-shaped structure consistent with the outer shape of the pump membrane 4.

[0086] Since the support plate 3 and the contact portion 41 of the pump membrane 4 are fitted together, it is ensured that when the water flow impacts the contact portion 41 of the pump membrane 4, no deformation will occur, and the water flow can impact vertically, so that the contact portion 41 moves completely in the impact direction of the water flow, further ensuring that the volume change of the second pump chamber 12 is uniform, that is, the pressure change everywhere is consistent, so that the action of adding detergent is more continuous and reliable.

[0087] Furthermore, a positioning assembly is also provided between the support plate 3 and the pump membrane 4. The positioning assembly includes a positioning column 5 provided on the side of the support plate 3 away from the guide sleeve 21 and a positioning hole 411 provided on the pump membrane 4 and matching with the positioning column 5. The positioning column 5 is inserted into the positioning hole 411 to achieve the positioning function before the pump membrane 4 and the support plate 3 are installed. In addition, a plurality of reinforcing ribs 51 are provided on the outer side of the positioning column 5 around its outer peripheral interval 52. A side wall of each reinforcing rib 51 close to the water inlet hole 111 is inclined in a direction away from the water inlet hole 111, so as to ensure that the pump membrane 4 has a certain guiding effect when being assembled in the direction of the support plate 3; a side wall of each reinforcing rib 51 away from the water inlet hole 111 has an interval 52 with the support plate 3, so that the positioning column 5 can be provided with a sealing ring at the interval 52 to prevent water from flowing into the second pump chamber 12 through the gap between the pump membrane 4 and the support plate 3.

[0088] Specifically, a plurality of screw columns 53 are provided on the support plate 3, one end of which is located inside the second pump chamber 12 and is closed and has threads inside. Correspondingly, a screw hole 412 is provided on the pump membrane 4 and is opposite to the screw column 53, and the pump membrane 4 and the support plate 3 are fastened and connected by screws.

[0089] Furthermore, the present invention also provides a detergent dispensing device having a water pressure pump as described in any of the above embodiments, which includes a water supply channel 7 for supplying water to flow through; a liquid storage chamber 8 for storing detergent; and a dispensing water channel 10 for dispensing the detergent in the liquid storage chamber 8 to the outside.

[0090] The liquid inlet 122 of the hydraulic pump is connected to the liquid storage chamber 8, and the liquid outlet 121 is connected to the water delivery channel 10;

[0091] The water inlet 111 and the water outlet 112 of the hydraulic pump are connected to the water supply channel 7 respectively.

[0092] In the present invention, the water pressure pump is applied to a detergent dispensing device. The liquid storage box of the detergent dispensing device is connected to the liquid inlet 122 of the water pressure pump through a pipeline, and a one-way check valve 6 is provided in the liquid inlet 122. Similarly, a one-way check valve 6 is also provided in the liquid outlet 121 of the water pressure pump, and the conduction directions of the two check valves 6 are arranged in opposite directions, and the liquid outlet 121 can be connected to the water box of the washing machine through a pipeline.

[0093] The water inlet 111 of the hydraulic pump is connected to the external water supply waterway 7, which can be a tap water pipe, and the water outlet 112 is connected to a preset external liquid storage tank, or directly flows back to the tap water tank. That is, the hydraulic pump forms a circulating waterway between the water inlet 111, the first pump chamber 11, the water outlet 112 and the tap water pipe (tap water tank).

[0094] In specific implementation, the pump membrane 4 is deformed by the impact of water flow, and then the volume of the second pump chamber 12 is reduced, and the pressure is increased, so that the detergent can be dispensed outward through the liquid outlet 121 of the water pressure pump. When the water flow is stopped, the pump membrane 4 recovers its deformation, and the volume of the second pump chamber 12 is increased from small to large, and the pressure is reduced, so that the detergent in the liquid storage chamber 8 can be extracted. This cycle is repeated to achieve the reciprocating action of detergent dispensing and extraction.

[0095] In another preferred embodiment, the liquid outlet 121 of the water pressure pump is connected to the water supply circuit 7 or the water flow channel composed of the water inlet hole 111, the first pump chamber 11 and the water outlet hole 112 through a pipeline, and the water flow channel composed of the water inlet hole 111, the first pump chamber 11 and the water outlet hole 112 of the water pressure pump is connected in series in the water supply circuit 7, wherein the water outlet hole 112 of the water pressure pump is connected to the interior of the washing machine.

[0096] In specific implementation, when the water pump feeds water to the water inlet hole 111 through the water supply waterway 7, the pump membrane 4 is deformed by the impact of the water flow, thereby reducing the internal volume of the second pump chamber 12 and increasing the internal pressure, so that detergent can be put into the water supply waterway 7 or the water flow channel composed of the water inlet hole 111, the first pump chamber 11 and the water outlet hole 112 through the liquid outlet hole 121. Then, the water supply is stopped, and the pump membrane 4 recovers its deformation and extracts detergent from the outside (liquid storage chamber 8) into the second pump chamber 12. In the next cycle, after the water flow is introduced, not only the deformation requirement of the pump membrane 4 is achieved, but also the detergent pumped into the water supply waterway 7 or the water flow channel can be rinsed and mixed, so that the mixed detergent is directly put into the washing machine through the water outlet hole 112. The frequency of on and off is increased to achieve multiple pumping of detergent and multiple pre-mixing. Compared with the traditional water inlet method of directly adding detergent into the water box and then flushing it directly into the washing machine, this method can pump and pre-mix the detergent multiple times, and the mixing degree is more uniform, which can be evenly mixed with the laundry to ensure the washing effect.

[0097] A position sensor is provided in the first pump chamber to detect whether the pump membrane has completely recovered its deformation. During the deformation process of the pump membrane in one cycle, when the pump membrane recovers its deformation, detergent is extracted into the second pump chamber due to the pressure difference. After the pump membrane has completely recovered its deformation, the position sensor detects that the pump membrane has completely recovered its deformation, and the program of extracting and adding detergent in this cycle ends. Then it is determined whether the total amount of added detergent has reached the preset value. If not, it returns to the beginning of the program to perform the next cycle of detergent extraction and addition.

[0098] Another preferred embodiment, referring to Figure 5 The water flow channel composed of the water inlet hole 111, the first pump chamber 11 and the water outlet hole 112 in the water pressure pump is connected to the water supply waterway 7, and a control valve 9 is arranged in the water inlet hole 111, wherein one end of the water supply waterway 7 is connected to the tap water pipe, and the other end is connected to the inside of the washing machine; the liquid outlet hole 121 of the water pressure pump is connected to the water flow channel composed of the water inlet hole 111, the first pump chamber 11 and the water outlet hole 112.

[0099] In the present invention, the water flow channel composed of the water inlet hole 111, the first pump cavity 11 and the water outlet hole 112 in the water pressure pump is a branch of the water supply waterway 7, and the two ends are respectively connected to the water supply waterway 7. Among them, a control valve 9 is provided on the pipeline where the water inlet hole 111 is located or the water supply waterway 7, and a one-way valve that is connected to the water supply waterway 7 is provided on the pipeline corresponding to the water outlet hole 112. When the water supply waterway 7 directly supplies water to the inside of the washing machine, it is opened and closed by the control valve 9. The pumping principle of the entire water pressure pump is consistent with the above. The difference is that while ensuring continuous water supply to the inside of the washing machine, the detergent can also be pumped into the water flow channel composed of the water inlet hole 111, the first pump cavity 11 and the water outlet hole 112. When the control valve 9 is opened, the detergent pumped into the water flow channel can be mixed. In the process of periodic pumping, the detergent can be pumped and premixed multiple times, and the mixing degree is more uniform and sufficient, and it is evenly mixed with the laundry to be washed, thereby ensuring the washing effect.

[0100] Similarly, a position sensor is provided in the first pump chamber to detect whether the pump membrane has completely recovered its deformation. The entire detection process is completely consistent with the above-mentioned embodiment, and will not be described in detail here.

[0101] Reference Figure 6 , 7 The present invention also provides a control method for the detergent dispensing device described in any of the above embodiments, which specifically includes the following steps:

[0102] Open the control valve 9, let in water, enter from the water inlet hole 111 and impact the pump membrane 4 to deform, and the liquid outlet hole 121 of the second pump chamber 12 releases detergent outward;

[0103] The control valve 9 is closed, the pump membrane 4 resumes its deformation, and the liquid inlet hole 122 of the second pump chamber 12 draws detergent.

[0104] In the present invention, a control valve 9 can be provided in the water inlet hole 111 to control the opening and closing of the water inlet hole 111. By periodically passing water into the water inlet hole 111 or shutting off the water inlet flow, the pump membrane 4 can be deformed periodically by utilizing the impact of the water inlet flow and the cooperation between the pump membrane 4 and / or the pump membrane 4 and the reset assembly 2, thereby changing the volume of the second pump chamber 12 and further changing the pressure of the second pump chamber 12, and periodically performing the extraction and delivery of detergent. Thus, the operation of extracting and delivering detergent by the water pressure pump is realized under the pressure of the water inlet flow, without the need for the action of additional transmission components such as motors, the structure is simple, the entire pumping action is more stable and reliable, and there are no safety hazards such as fire.

[0105] Reference Figure 7, further, the water inlet flow is controlled to become larger, the water flow pressure is increased, the water enters from the water inlet hole 111 and impacts the pump membrane 4 to cause deformation, and the liquid outlet hole 121 of the second pump chamber 12 releases detergent outward;

[0106] The inlet water flow is controlled to become smaller, the water flow pressure is reduced, the pump membrane 4 recovers its deformation, and the liquid inlet hole 122 of the second pump chamber 12 draws detergent.

[0107] In the present invention, a control valve 9 can be provided in the water inlet hole 111 to control the flow rate of the water inlet hole 111. By controlling the opening of the control valve 9, the pressure of the water flow can be controlled by controlling the flow rate of the inlet water flow, and then by controlling the periodic change of the water flow pressure, the pump membrane 4 can also be deformed periodically. The specific pumping principle is basically the same as the working principle of directly conducting and closing the inlet water flow mentioned above. The periodic extraction and delivery of detergent can also be achieved. However, by controlling the opening of the control valve 9, the change of the water flow pressure can be controlled, and the entire impact pressure on the pump membrane 4 can be controlled, so that the amount of detergent pumped can be controlled more accurately to meet the requirements of each amount of pumped detergent.

[0108] 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 a preferred embodiment as above, 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 also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on 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 hydraulic pump, characterized in that: include, A pump housing (1) having a pump chamber therein; A pump membrane (4) is deformably disposed in the pump chamber to separate the pump chamber into two mutually unconnected first pump chamber (11) and second pump chamber (12); The first pump chamber (11) is provided with a water inlet (111) and a water outlet (112) for connecting the chamber with the outside; The second pump chamber (12) is provided with a liquid inlet hole (122) and a liquid outlet hole (121) capable of unidirectionally conducting communication between the chamber and the outside.

2. A water pressure pump according to claim 1, characterized in that: A retaining ring (13) connected to the water inlet hole (111) is provided in the first pump chamber (11), extending along the inner wall of the first pump chamber (11) towards the diaphragm and abutting against its end surface, thereby closing the channel between the water inlet hole (111) and the water outlet hole (112).

3. A water pressure pump according to claim 2, characterized in that: The water inlet hole (111) is arranged on the end surface of the first pump chamber (11), and the water outlet hole (112) is arranged on the outer periphery of the first pump chamber (11), and the extension directions of the water inlet hole (111) and the water outlet hole (112) are perpendicular.

4. A hydraulic pump according to any one of claims 1 to 3, characterized in that: A reset assembly (2) is arranged in the second pump chamber (42) and can be extended and retracted along the deformation direction of the pump membrane (4), one end of which is connected to the side wall of the pump membrane (4) and the other end of which is connected to the side wall of the second pump chamber (42).

5. A water pressure pump according to claim 4, characterized in that: The reset component (2) comprises: A guide sleeve (21), one end of which is connected to the side wall of the pump membrane (4), and the other end of which protrudes outward from the connection; A guide column (23) has one end connected to the side wall of the second pump chamber (42) and the other end protruding outward from the connection and plugged into the guide sleeve (21); The telescopic spring (22) is sleeved on the outside of the guide column (23), and its two ends respectively abut against the pump membrane (4) and the side wall of the second pump chamber (42).

6. A water pressure pump according to claim 5, characterized in that: The pump membrane (4) comprises, A contact portion (41), wherein a contact end surface of the contact portion (41) is directly opposite to the retaining ring (13); The deformation portion has one end connected to the side wall of the contact portion (41) and the other end connected to the side wall of the pump chamber, and the deformation portion has at least one bending portion (43).

7. A water pressure pump according to claim 6, characterized in that: The thickness of the contact portion (41) is greater than the thickness of the deformation portion; Alternatively, the thickness of the pump membrane (4) gradually decreases in a direction extending from the contact portion (41) toward the deformation portion.

8. A detergent dispensing device, comprising: A water supply channel (7) for supplying water to flow through; A liquid storage chamber (8) storing detergent; A water delivery channel (10) for delivering detergent from the liquid storage chamber (8) to the outside; Features: Also includes a water pressure pump as described in any one of claims 1 to 7 above; The liquid inlet hole (122) of the hydraulic pump is connected to the liquid storage chamber 8, and the liquid outlet hole (121) is connected to the water delivery channel (10); The water inlet (111) and the water outlet (112) of the hydraulic pump are respectively connected to the water supply channel 7.

9. A control method for the detergent dispenser according to claim 8, characterized in that: The specific steps include: The water flow is turned on, and enters from the water inlet hole (111) and impacts the pump membrane (4) to cause deformation, and the liquid outlet hole (121) of the second pump chamber (42) releases detergent outward; The water inlet flow is closed, the pump membrane (4) recovers its deformation, and the liquid inlet hole (122) of the second pump chamber (42) draws detergent.

10. The control method of the detergent dispensing device according to claim 9, characterized in that: The water inlet flow is controlled to increase, the water flow pressure is increased, the water enters from the water inlet hole (111) and impacts the pump membrane (4) to cause deformation, and the liquid outlet hole (121) of the second pump chamber (42) releases detergent to the outside. The water inlet flow is controlled to become smaller, the water flow pressure is reduced, the pump membrane (4) recovers its deformation, and the liquid inlet hole (122) of the second pump chamber (42) draws detergent.

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