Quantitative liquid suction valve

Abstract

The utility model provides a quantitative liquid suction valve. The quantitative liquid suction valve comprises a shell, a valve plate and an upper cover. And a housing. The shell is further provided with a first liquid inlet and a first liquid outlet which are communicated with the pressure cavity. The valve plate is arranged at an opening of the pressure cavity in a sealed mode, and the deformation part of the valve plate elastically deforms due to pressure changes in the pressure cavity, so that the deformation part protrudes towards or away from the pressure cavity. The upper cover is provided with a liquid storage cavity, the upper cover hermetically covers the shell and is hermetically connected with the valve plate, the deformation part protrudes towards the pressure cavity, the target solution is sucked into the liquid storage cavity from a second liquid inlet of the liquid storage cavity, the deformation part recovers deformation and protrudes towards the liquid storage cavity, and the target solution is discharged out of the liquid storage cavity from a second liquid outlet of the liquid storage cavity. The quantitative liquid suction valve is simple in structure, and the suction amount is controlled more accurately.

Description

Technical Field

[0001] The utility model relates to a liquid flow valve, in particular to a quantitative liquid suction valve. Background Art

[0002] Among various waterway-related electrical appliances, there is usually at least one liquid path channel for liquid path transmission. During the use of the electrical appliance, it is usually necessary to quantitatively suck another solvent for mixing with the liquid path. For example, during the use of a fully automatic washing machine, it is necessary to automatically add washing liquid and complete the washing.

[0003] However, traditional suction valves usually require a suction pump to extract the solvent by the extraction action of the suction pump. For the setting of the suction pump, on the one hand, the circuit design is relatively complex, and on the other hand, it is necessary to separately set an independent control system for the negative pressure pump to control the suction pump to achieve the extraction of the solvent. Therefore, for traditional suction valves, a suction pump and corresponding control of the suction pump are required. Due to the certain delay in the electrical signal control of the suction pump, there is a certain error in the volume of the sucked liquid, which is not conducive to precise control. Summary of the Utility Model

[0004] The utility model can provide a quantitative liquid suction valve that can accurately control the suction volume.

[0005] A quantitative liquid suction valve for sucking a target solution, comprising:

[0006] A housing provided with a pressure chamber, one end of the pressure chamber being open, and the housing further having a first liquid inlet and a first liquid outlet communicating with the pressure chamber, the first liquid inlet being used for inputting a pressure medium flow, and the first liquid outlet being used for outputting the pressure medium flow;

[0007] A valve plate hermetically provided at the opening of the pressure chamber, the valve plate being provided with a deformation part that undergoes elastic deformation due to the pressure change in the pressure chamber, causing the deformation part to protrude towards or away from the pressure chamber;

[0008] An upper cover provided with a liquid storage chamber, the upper cover being hermetically covered on the housing and hermetically connected to the valve plate, the liquid storage chamber having a second liquid inlet and a second liquid outlet, the second liquid inlet being used for sucking the target solution, and the second liquid outlet being used for discharging the sucked target solution. When the deformation part protrudes towards the pressure chamber, the target solution is sucked into the liquid storage chamber from the second liquid inlet, and when the deformation part resumes deformation and protrudes towards the liquid storage chamber, the target solution is discharged from the second liquid outlet of the liquid storage chamber.

[0009] In one embodiment, the upper cover is provided with a liquid storage groove, and the first liquid inlet and the first liquid outlet are provided at the bottom of the liquid storage groove.

[0010] In one embodiment, the valve disc is circular. In the radial direction of the valve disc, from outside to inside, the valve disc includes a connecting ring and a deformation part. The connecting ring is used to connect with the end of the opening end of the housing, and the deformation part is in a trumpet shape.

[0011] In one embodiment, an annular groove for receiving the connecting ring is provided at the opening end of the housing. The connecting ring is received in the annular groove, so that the valve disc is sealingly connected to the housing.

[0012] In one embodiment, the upper cover presses on the connecting ring of the valve disc, and an annular rib is further provided at the pressing portion of the upper cover and the connecting ring.

[0013] In one embodiment, a first one-way diaphragm is provided at the second liquid inlet. The first one-way diaphragm is used to prevent the target solution from flowing out of the second liquid inlet.

[0014] In one embodiment, a second one-way diaphragm is provided at the second liquid outlet. The second one-way diaphragm is used to prevent the target solution from flowing back from the second liquid outlet.

[0015] In one embodiment, a constriction is provided at the end of the first liquid outlet, and the aperture of the constriction is smaller than the aperture of the first liquid outlet.

[0016] In one embodiment, the housing is snap-fitted with the upper cover.

[0017] In one embodiment, the second liquid inlet and the second liquid outlet of the housing are also connected with a joint. The shape of the joint includes a large head end and a small head end. The large head end is fixedly connected to the housing and communicates with the liquid storage cavity.

[0018] It can be seen from the above technical solutions that the present utility model has at least the following advantages and positive effects:

[0019] For the quantitative liquid suction valve of this embodiment, when the pressure medium flow is opened to allow the pressure medium flow to flow into the pressure chamber, the pressure in the pressure chamber increases, causing the valve disc to elastically deform and protrude into the liquid storage chamber, thereby squeezing the space of the liquid storage chamber and reducing the space of the liquid storage chamber. When the pressure medium flow is closed, the pressure in the pressure chamber decreases, the valve disc resumes its elastic deformation, protrudes into the pressure chamber, the space of the liquid storage chamber increases, the pressure in the liquid storage chamber decreases, and the target solution is sucked into the liquid storage chamber from the second liquid inlet. When the pressure medium flow is opened again and flows into the pressure chamber, the valve disc deforms again. The valve disc protrudes into the liquid storage chamber, and the target solution is discharged from the second liquid outlet. Since the size of the space corresponding to each deformation of the valve disc is a fixed size, the volume of the target solution sucked each time is also a fixed amount, thus achieving the purpose of sucking a quantitative target solution. This control method for quantitatively sucking the target solution can keep the extraction amount of the target solution constant and will not cause different extraction amounts due to factors such as control signal delay.

[0020] Moreover, the quantitative liquid suction valve of this embodiment can drive the suction effect of the liquid suction valve on the target solution without using a suction pump, avoiding the addition of an extra suction pump, reducing the manufacturing cost of the quantitative liquid suction valve, and simplifying the pipeline control. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional schematic diagram of the quantitative liquid suction valve of this embodiment;

[0022] Figure 2 is Figure 1 the sectional view of the quantitative liquid suction valve shown;

[0023] Figure 3 is Figure 1 the exploded schematic diagram of the quantitative liquid suction valve shown.

[0024] The descriptions of the reference numerals are as follows:

[0025] 1. Quantitative liquid suction valve;

[0026] 11. Housing; 111. Pressure chamber; 112. First liquid inlet; 113. First liquid outlet; 114. Step portion; 115. Annular groove; 116. Clamping projection;

[0027] 12. Valve disc; 121. Connecting ring; 122. Deformation portion;

[0028] 13. Upper cover; 131. Liquid storage chamber; 132. Second liquid inlet; 133. Second liquid outlet; 134. Annular rib; 135. First one-way diaphragm; 1351. First column; 1352. First stop piece; 136. Second one-way diaphragm; 1361. Second column; 1362. Second stop piece; 138. Connector; 139. Clamping wing; 130. Card slot. Detailed implementation manners

[0029] Typical implementation manners reflecting the features and advantages of the present utility model will be described in detail in the following description. It should be understood that the present utility model can have various changes in different implementation manners, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present utility model.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0031] Please refer to Figure 1 and Figure 2 , a quantitative liquid suction valve 1 is used to suck the target solution. The quantitative liquid suction valve 1 includes a housing 11, a valve plate 12 and an upper cover 13.

[0032] The housing 11 is provided with a pressure chamber 111, and one end of the pressure chamber 111 is open. The housing 11 is also provided with a first liquid inlet 112 and a first liquid outlet 113 that communicate with the pressure chamber 111. The first liquid inlet 112 is used to input the pressure medium flow, and the first liquid outlet 113 is used to output the pressure medium flow.

[0033] When the pressure medium flow is opened, the pressure medium flow flows in from the first liquid inlet 112 and flows out from the first liquid outlet 113.

[0034] The pressure medium flow has a certain pressure. When the pressure medium flow flows into the pressure chamber 111, it will fill the pressure chamber 111 with the pressure medium flow. Among them, the pressure medium flow can be a pressure water flow. Here, the specific type of the pressure medium flow is not limited, and it can be a water flow or other media, such as liquid oil, etc.

[0035] Moreover, a step portion 114 is provided at the end of the first liquid outlet 113, and the step portion 114 protrudes inwardly towards the first liquid outlet 113. The aperture of the step portion 114 is smaller than that of the first liquid outlet 113. The step portion 114 can help generate sufficient pressure in the power chamber and increase the pressure of the pressurized water flow flowing out of the first liquid outlet 113.

[0036] The valve plate 12 is circular. In the radial direction of the valve plate 12, the valve plate 12 includes a connecting ring 121 and a deformation portion 122 from outside to inside. The connecting ring 121 is used to connect with the end of the open end of the housing 11, and the deformation portion 122 is in a trumpet shape. The connecting ring 121 is provided on the outer periphery of the deformation portion 122. The thickness of the connecting ring 121 is greater than that of the deformation portion 122.

[0037] The valve plate 12 is hermetically provided at the opening of the pressure chamber 111. The deformation portion 122 undergoes elastic deformation due to the pressure change in the pressure chamber 111, causing the deformation portion 122 to protrude towards or away from the pressure chamber 111. When the pressure water flow flows into the pressure chamber 111, the pressure in the pressure chamber 111 increases, and the deformation portion 122 protrudes away from the pressure chamber 111. When the pressure water flow is closed, the pressure in the pressure chamber 111 decreases, and the deformation portion 122 resumes deformation, and the deformation portion 122 protrudes towards the pressure chamber 111.

[0038] The end of the open end of the housing 11 can be received in the annular groove 115, so that the connecting ring 121 of the valve plate 12 is received in the annular groove 115, and the valve plate 12 is hermetically connected to the housing 11.

[0039] The upper cover 13 is provided with a liquid storage chamber 131. The upper cover 13 is hermetically covered on the housing 11 and is hermetically connected to the valve plate 12. The liquid storage chamber 131 is provided with a second liquid inlet 132 and a second liquid outlet 133. The second liquid inlet 132 is used to suck the target solution, and the second liquid outlet 133 is used to discharge the sucked target solution. When the deformation portion 122 protrudes towards the pressure chamber 111, the volume of the liquid storage chamber 131 increases, causing the liquid storage chamber 131 to form a negative pressure, so that the target solution is sucked into the liquid storage chamber 131 from the second liquid inlet 132; when the deformation portion 122 resumes elastic deformation and protrudes towards the liquid storage chamber 131, the volume of the liquid storage chamber 131 decreases, and the target solution is discharged from the second liquid outlet 133 out of the liquid storage chamber 131.

[0040] Please refer to Figure 3, a first one-way diaphragm 135 is provided at the second liquid inlet 132. The first one-way diaphragm 135 is used to prevent the target solution from flowing out of the second liquid inlet 132. The first one-way diaphragm 135 includes a first cylinder 1351 and a first stop piece 1352. The first cylinder 1351 is received in the second liquid inlet 132. The first stop piece 1352 is located at the communication between the second liquid inlet 132 and the liquid storage chamber 131. The first stop piece 1352 allows the target solution to only flow in from the outside to the inside and not flow out from the inside to the outside.

[0041] A second one-way diaphragm 136 is provided at the second liquid outlet 133. The second one-way diaphragm 136 is used to prevent the target solution from flowing back from the second liquid outlet 133.

[0042] The second one-way diaphragm 136 includes a second cylinder 1361 and a second stop piece 1362. The second cylinder 1361 is received in the second liquid outlet 133. The second stop piece 1362 is located at the port of the second liquid outlet 133 far from the liquid storage chamber 131. The second stop piece 1362 allows the target solution to only flow out from the inside to the outside and not flow in from the outside to the inside.

[0043] Moreover, a joint 138 is provided at one end of the second liquid inlet 132 and the second liquid outlet 133 far from the liquid storage chamber 131. The joint 138 includes a large head end and a small head end. The large head end is fixedly connected to the housing and communicates with the liquid storage chamber. The small head end is convenient for connecting with an external pipe. The joint 138 can be two independent structures or an integrally connected structure. Specifically, in this embodiment, since the distance between the second liquid inlet 132 and the second liquid outlet 133 is relatively close, the joint 138 is an integrally connected structure.

[0044] The upper cover 13 is provided with clamping wings 139, and clamping grooves 130 are formed on the clamping wings 139. A clamping protrusion 116 is provided on the outer side wall of the housing 11. When the housing 11 and the upper cover 13 are clamped and connected, the clamping groove 130 and the clamping protrusion 116 are clamped and connected, so that the housing 11 and the upper cover 13 are fixedly connected. After the housing 11 and the upper cover 13 are clamped and fixed, the housing 11 and the upper cover 13 press the valve plate 12 together, so that a sealed connection is maintained between the housing 11 and the valve plate 12, and between the upper cover 13 and the valve plate 12.

[0045] Moreover, the upper cover 13 presses on the connection ring 121 of the valve plate 12. An annular rib 134 is also provided at the pressing portion of the upper cover 13 and the connection ring 121. The annular rib 134 can be firmly pressed on the connection ring 121 of the valve plate 12, so that the upper cover 13 and the valve plate 12 are hermetically connected.

[0046] The annular rib 134 presses on the valve plate 12, further enhancing the sealing performance between the upper cover 13 and the valve plate 12. The valve plate 12 is arranged opposite to the top end face of the fixed disk 151, and the annular rib 134 and the fixed disk 151 are respectively pressed in the up and down directions of the valve plate 12.

[0047] When the pressure medium flow is opened to allow the pressure medium flow to flow into the pressure chamber 111, the pressure in the pressure chamber 111 increases, causing the valve plate 12 to bulge outwards and undergo elastic deformation, thereby squeezing the space of the liquid storage chamber 131 and reducing the space of the liquid storage chamber 131. When the pressure medium flow is closed, the pressure in the pressure chamber 111 decreases, the valve plate 12 resumes its elastic deformation, bulges towards the pressure chamber 111, the space of the liquid storage chamber 131 increases, the pressure in the liquid storage chamber 131 decreases, and the target solution is thus sucked into the liquid storage chamber 131 from the second liquid inlet 133. When the pressure medium flow is opened again and flows into the pressure chamber 111, the valve plate 12 deforms again. The valve plate 12 bulges towards the liquid storage chamber 131, and the target solution is discharged from the second liquid outlet 133. Since the space size corresponding to each deformation amount of the valve plate 12 is a fixed size, the volume of the target solution sucked each time is also a fixed amount, thereby achieving the purpose of sucking a quantitative target solution. This control method for quantitatively sucking the target solution can keep the extraction amount of the target solution constant and will not cause different extraction amounts due to factors such as control signal delay.

[0048] Therefore, in the above-mentioned quantitative liquid suction valve 1, by controlling the on-off situation of the pressure medium flow in the housing 11, the suction of the target solution can be controlled. Moreover, the suction amount of the target solution is also a quantitative suction, which is convenient for controlling the suction amount of the target solution.

[0049] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A quantitative liquid suction valve, characterized in that, For sucking a target solution, comprising: A housing provided with a pressure chamber, one end of the pressure chamber being open, the housing further having a first liquid inlet and a first liquid outlet communicating with the pressure chamber, the first liquid inlet being for inputting a pressure medium flow, and the first liquid outlet being for outputting the pressure medium flow; A valve plate hermetically provided at the opening of the pressure chamber, the valve plate having a deformation part which elastically deforms under the pressure change in the pressure chamber, causing the deformation part to protrude towards or away from the pressure chamber; An upper cover provided with a liquid storage chamber, the upper cover hermetically covering the housing and being hermetically connected to the valve plate, the liquid storage chamber having a second liquid inlet and a second liquid outlet, the second liquid inlet being for sucking the target solution, the second liquid outlet being for discharging the sucked target solution, the deformation part protruding towards the pressure chamber, the target solution being sucked into the liquid storage chamber from the second liquid inlet, the deformation part recovering its deformation and protruding towards the liquid storage chamber, and the target solution being discharged from the liquid storage chamber through the second liquid outlet.

2. The quantitative liquid suction valve according to claim 1, wherein The upper cover is provided with a liquid storage groove, and the first liquid inlet and the first liquid outlet are provided at the bottom of the liquid storage groove.

3. The quantitative liquid suction valve according to claim 1, wherein The valve plate is circular. In the radial direction of the valve plate, from the outside to the inside, the valve plate includes a connecting ring and a deformation part. The connecting ring is for connecting with the end of the open end of the housing, and the deformation part is in a trumpet shape.

4. The quantitative liquid suction valve according to claim 3, characterized in that, The open end of the housing is provided with an annular groove for receiving the connecting ring, and the connecting ring is received in the annular groove, so that the valve plate is hermetically connected to the housing.

5. The quantitative liquid suction valve according to claim 4, characterized in that, The upper cover presses on the connecting ring of the valve plate, and an annular rib is further provided at the pressing portion of the upper cover and the connecting ring.

6. The metering liquid suction valve according to claim 1, wherein A first one-way diaphragm is provided at the second liquid inlet, and the first one-way diaphragm is for preventing the target solution from flowing out at the second liquid inlet.

7. The quantitative liquid suction valve according to claim 1, characterized in that, A second one-way diaphragm is provided at the second liquid outlet, and the second one-way diaphragm is for preventing the target solution from flowing back through the second liquid outlet.

8. The quantitative liquid suction valve according to claim 1, wherein The end of the first liquid outlet is provided with a constriction portion, and the aperture of the constriction portion is smaller than the aperture of the first liquid outlet.

9. The quantitative liquid suction valve according to claim 1, wherein The housing and the upper cover are snap-connected.

10. The quantitative liquid suction valve according to claim 1, wherein, The second liquid inlet and the second liquid outlet of the housing are also provided with connectors. The shape of the connectors includes a large head end and a small head end. The large head end is fixedly connected to the housing and communicates with the liquid storage chamber.

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