CN216665896U - End cover structure for liquid feeding pump, delivery system and dish washing machine - Google Patents

Abstract

The utility model discloses an end cover structure for a liquid adding pump, the liquid adding pump, a feeding system and a dish washing machine, which comprise a pump cover, a liquid inlet pipe and a liquid outlet pipe, wherein the pump cover is covered with a pump body of the liquid adding pump to form a pump cavity; the inlet end of the liquid inlet pipe and the outlet end of the liquid outlet pipe are sleeved with one-way valves, and the one-way valves of the liquid inlet pipe are in one-way conduction from outside to inside; and the one-way valve of the liquid outlet pipe is in one-way conduction from inside to outside. The utility model makes the pump cavity become a whole by installing the one-way valve outside, and simplifies the structure of the pump cavity. When the external factors influence the function of the one-way valve to fail, the one-way valve can be conveniently and quickly detached, cleaned or replaced, and other hidden dangers caused by the detachment of the pump are reduced.

Description

End cover structure for liquid feeding pump, delivery system and dish washing machine

Technical Field

The utility model relates to the technical field of household appliances, in particular to an end cover structure for a liquid adding pump, the liquid adding pump, a throwing system and a dish washing machine.

Background

In a common liquid adding system, a liquid adding pump is used for automatically putting washing aids such as laundry detergent and the like. In order to realize the liquid pumping function and prevent reverse liquid leakage, a one-way valve structure is mostly used in the pump.

However, the types of the washing aids used by users are complicated and changeable, and more possible influence factors exist in the use environment, so that impurities can enter the pump body in the use process of the pump. Impurity is when passing through the check valve, often can block in the position that the check valve opened and shut, leads to the pump to produce the functional failure, can't realize the drawing liquid function, perhaps produces reverse weeping, influences the normal use of user to washing auxiliary.

Because the check valve structure is designed in the route that the liquid flows through in the pump body more, lead to being difficult to in time discover when producing this kind of bad to can't clear up the recovery effectively in time after discovering, make cost of maintenance higher, efficiency is extremely low.

SUMMERY OF THE UTILITY MODEL

The utility model provides an end cover structure for a liquid adding pump, the liquid adding pump, a feeding system and a dish washing machine, which are used for solving the technical problems that in the prior art, a one-way valve is arranged in a pump body, and cannot be cleaned and restored timely and effectively when the one-way valve fails, so that the maintenance cost is high and the efficiency is extremely low.

The utility model provides an end cover structure for a liquid adding pump, which comprises a pump cover, a liquid inlet pipe and a liquid outlet pipe, wherein the pump cover is covered with a pump body of the liquid adding pump to form a pump cavity; the inlet end of the liquid inlet pipe and the outlet end of the liquid outlet pipe are sleeved with one-way valves, and the one-way valves of the liquid inlet pipe are in one-way conduction from outside to inside; the one-way valve of the liquid outlet pipe is in one-way conduction from inside to outside.

Furthermore, the check valve comprises an outer sleeve and a check structure connected with the outer sleeve, the outer sleeve is connected with the liquid inlet pipe or the liquid outlet pipe, and the check structure is provided with a check part which enables the check valve to be conducted in a one-way mode.

Furthermore, in the check valve on the liquid inlet pipe, a check structure is positioned inside the outer sleeve, and the check part is positioned at one end of the check structure facing the inside of the liquid inlet pipe.

Furthermore, the outer circumference of the liquid inlet pipe close to the inlet end or the outer circumference of the liquid outlet pipe close to the outlet end is provided with an installation positioning groove, and the outer sleeve is provided with an inner convex structure suitable for being clamped into the installation positioning groove.

Furthermore, one or more annular convex ribs are arranged on the outer side of the circumference of the outer sleeve.

Furthermore, in the check valve on the liquid outlet pipe, a non-return structure is positioned outside the outer sleeve, and the non-return part is positioned at one end of the non-return structure facing the outside of the liquid outlet pipe.

Furthermore, the pump chamber is provided with two, two the pump chamber communicates with feed liquor pipe and drain pipe that correspond respectively.

The utility model also provides a liquid adding pump which comprises a driving mechanism, a pump body and the end cover structure for the liquid adding pump, wherein the driving mechanism is used for conveying the cleaning solution in the pump cavity.

The utility model also provides a dosing system which comprises the liquid adding pump.

The utility model also provides a dishwasher comprising the dosing system.

The beneficial effects of the utility model are:

(1) the check valves of conventional pumps are typically located within the pump chamber, dividing the pump chamber into an inlet chamber and an outlet chamber. The utility model changes the pump cavity into a whole by assembling the one-way valve outside, simplifies the structure of the pump cavity, and is convenient to replace and maintain by adopting a jacket mode.

(2) The traditional installation mode usually needs to be the special mounting structure of setting up of check valve in the pump, and when the check valve took place the functional failure because external reason (such as impurity that mixes in the pumped liquid etc.), need to lift off the pump from the installation component, again with the pump disassemble separate the check valve and change or clear up, troublesome poeration usually can produce higher cost. The one-way valve is arranged outside, and when the function of the one-way valve fails due to the influence of external factors, the one-way valve can be conveniently and quickly detached, cleaned or replaced, so that other hidden dangers caused by the disassembly of the pump are reduced.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

Fig. 1 is a perspective view of an end cap structure for a charging pump according to the present invention (only one pump chamber is provided with a check valve);

FIG. 2 is a perspective view of the pump cap of FIG. 1;

FIG. 3 is a perspective view of the liquid inlet check valve of the present invention;

FIG. 4 is a cross-sectional view of the inlet check valve of FIG. 3;

FIG. 5 is a perspective view of the liquid outlet check valve of the present invention;

fig. 6 is a sectional view of the liquid outlet check valve shown in fig. 5;

FIG. 7 is a schematic view of the direction of force applied to the fluid in the charging state of the present invention;

fig. 8 is a schematic view of the direction of the fluid force when the present invention is in the dispensing state.

In the figure, the pump comprises a pump cavity 1, a pump cover 2, a pump cover 3, a liquid inlet pipe 4, a liquid outlet pipe 5, a liquid inlet one-way valve 6, a liquid outlet one-way valve 7, an outer sleeve pipe 8, a check structure 801, a check part 802, a transition surface 9, an annular convex rib 10, an installation positioning groove 11 and an inner convex structure.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

As shown in fig. 1-6, an end cover structure for a liquid feeding pump comprises a pump cover 2 covered with a pump body of the liquid feeding pump to form a pump cavity 1, a liquid inlet pipe 3 and a liquid outlet pipe 4 communicated with the pump cavity 1; the inlet end of the liquid inlet pipe 3 and the outlet end of the liquid outlet pipe 4 are sleeved with one-way valves, and the one-way valves of the liquid inlet pipe 3 are in one-way conduction from outside to inside; the one-way valve of the liquid outlet pipe 4 is communicated in one way from inside to outside. The sleeving means that the one-way valve is sleeved on the liquid inlet pipe 3 and the liquid outlet pipe 4, and when the one-way valve fails, the one-way valve can be directly dismounted without dismounting other parts.

Pump chamber 1 can set up one, also can set up a plurality ofly for the different detergents of splendid attire, every pump chamber 1 respectively with corresponding feed liquor pipe 3 and drain pipe 4 intercommunication, independently throw in work separately, as shown in figure 2, pump cover 2 is last to have two convex pump chambers 1, the bottom opening of pump chamber 1 forms confined pump chamber 1 structure after closing with the pump body lid of liquid feeding pump. For the convenience of description, the check valve on the liquid inlet pipe 3 is named as a liquid inlet check valve 5, the check valve on the liquid outlet pipe 4 is named as a liquid outlet check valve 6, the liquid inlet check valve 5 is used for replenishing detergent into the pump cavity 1, and the liquid outlet check valve 6 is used for putting detergent.

The one-way conduction of the liquid inlet check valve 5 and the liquid outlet check valve 6 can be realized by adopting the following structure, but not limited to the following structure: the one-way valve comprises an outer sleeve 7 and a check structure 8 connected with the outer sleeve 7, the outer sleeve 7 is connected with the liquid inlet pipe 3 or the liquid outlet pipe 4, and the check structure 8 is provided with a check part 801 enabling the one-way valve to be conducted in one direction. The outer sleeve 7 and the non-return structure 8 are axially sealed, and the detergent can only pass through the one-way valve through the middle channel of the non-return structure 8.

The end part of the non-return part 801 is connected with a transition surface 802 which gradually expands outwards along the axial direction, the non-return part 801 and the transition surface 802 have certain toughness, and in a free state, the non-return part 801 is in a closed state, and the one-way valve is closed; when the detergent impacts the check part 801 through the inside of the transition surface 802, the tip of the transition surface 802 is expanded, and meanwhile, the check part 801 is also expanded and deformed, and the one-way valve is in a conducting state; when the detergent is impacted in the reverse direction, i.e., the detergent is impacted from the direction of the non-return portion 801 to the outer surface of the transition surface 802, the transition surface 802 is pressed toward the center, the non-return portion 801 is gradually closed, and the check valve is closed.

As shown in fig. 3 and 4, the structure of liquid inlet check valve 5 is that check portion 801 on liquid inlet check valve 5 is located at one end of check structure 8 facing the inside of liquid inlet pipe 3. The transition surface 802 is located at the outer end of the check portion 801, when the detergent flows from outside to inside, the check portion 801 opens, the liquid inlet check valve 5 is opened, otherwise, the liquid inlet check valve 5 is closed. The non-return structure 8 of the inlet check valve 5 is preferably arranged inside the outer sleeve 7, which saves space and also allows the detergent to impact the non-return portion 801 at a greater flow rate through the intermediate passage of the non-return structure 8.

As shown in fig. 5 and fig. 6, the liquid outlet check valve 6 has a structure, the non-return portion 801 of the liquid outlet check valve 6 is located at an end of the non-return structure 8 facing to the outside of the liquid outlet pipe 4, and the transition surface 802 is located at an inner end of the non-return portion 801, i.e. an end facing to the inside of the liquid outlet pipe 4. When the detergent flows from inside to outside, the non-return part 801 is opened, the liquid outlet one-way valve 6 is conducted, and conversely, the liquid outlet one-way valve 6 is closed. The non-return structure 8 on the outlet non-return valve 6 is preferably arranged outside the outer sleeve 7 and its function is to make the detergent impact the non-return part 801 with a larger flow rate through the middle passage of the non-return structure 8.

Preferably, the outer circumferential side of the outer sleeve 7 is further provided with one or more annular ribs 9 for sealing connection with a mating component when mounted on the complete machine.

The installation of check valve and feed liquor pipe 3 or drain pipe 4: as shown in fig. 1, the liquid inlet pipe 3 is provided with a mounting positioning groove 10 on the outer side of the circumference near the inlet end or the liquid outlet pipe 4 is provided with a mounting positioning groove 10 on the outer sleeve 7, and the outer sleeve 7 is provided with an inner convex structure 11 which is suitable for being clamped into the mounting positioning groove 10. The inner projection 11 projects radially inwardly from the inner surface of the outer sleeve 7.

In the structure of the liquid inlet check valve 5 shown in fig. 4, the inner protrusion structure 11 is located at one end of the outer sleeve 7 facing the liquid inlet pipe 3, and the inner protrusion structure 11 is clamped in the installation positioning groove 10 on the liquid inlet pipe 3.

In the structure of the liquid outlet one-way valve 6 shown in fig. 6, the inner convex structure 11 is located in the middle of the outer sleeve 7, and the inner convex structure 11 is clamped in the installation positioning groove 10 on the liquid outlet pipe 4.

According to the utility model, the flow direction of the detergent can be controlled in a pushing or sucking mode of the pump, so that the one-way valve is opened or closed, for example, when the detergent is pushed into the liquid inlet pipe 3, the liquid inlet one-way valve 5 is opened, and the detergent can enter the pump cavity 1, but the structure can cause the liquid inlet one-way valve 5 and the liquid outlet one-way valve 6 to be opened simultaneously, so that the independent control of liquid inlet and liquid outlet cannot be realized.

The utility model also provides a liquid charging pump, which comprises a driving mechanism and the end cover structure for the liquid charging pump, wherein the end cover structure is arranged on the pump body and is used for conveying the washing liquid in the pump cavity 1, and the driving mechanism is suitable for changing the pressure in the pump cavity 1 so as to open or close the one-way valve. When the pressure in the pump cavity 1 increases, the non-return part 801 of the liquid inlet one-way valve 5 is reversely pressed and closed, and the non-return part 801 of the liquid outlet one-way valve 6 is positively pressed and opened, at this time, the detergent can be put in (as shown in fig. 8); when the pressure in the pump chamber 1 is reduced, the non-return portion 801 of the liquid outlet one-way valve 6 is reversely pressed to be closed, and the non-return portion 801 of the liquid inlet one-way valve 5 is normally pressed to be opened, and at this time, the detergent can be added into the pump chamber 1 (as shown in fig. 7). Thereby realizing the independent operation of liquid feeding and throwing and ensuring the accuracy of the throwing amount.

Specifically, actuating mechanism includes flexible pipe, driving motor, the transmission assembly who is connected with driving motor, the one end and the pump chamber 1 one-to-one intercommunication of flexible pipe, transmission assembly's output is connected the other end of flexible pipe. Regarding this driving structure, the applicant has described in detail in the patent of the prior application (patent No. CN209456750U), so the present invention does not show the corresponding drawings, the telescopic tube corresponds to the first cavity and the second cavity in the prior application, the transmission assembly corresponds to the first transmission system and the second transmission system in the prior application, the telescopic tube makes telescopic motion under the driving of the transmission assembly, the telescopic tube and the pump cavity 1 form a sealed cavity, when the telescopic tube extends, the volume of the sealed cavity increases to generate negative pressure, and external liquid is pressurized to enter the pump cavity 1 from the liquid inlet one-way valve 5 which is conducted; when the telescopic pipe is shortened, the volume of the sealed cavity is contracted to generate positive pressure, and the detergent in the pump cavity 1 is pressed to be discharged out of the pump cavity 1 through the communicated liquid outlet one-way valve 6.

A dispensing system comprises the liquid feeding pump.

The delivery system can be used in household appliances such as dishwashers or washing machines, for example, detergents can be automatically delivered into the dishwashers.

In the description of the present invention, it is to be understood that the terms "inner", "outer", "axial", "radial", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be construed as limiting the present invention.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The utility model provides an end cover structure for liquid feeding pump which characterized in that: comprises a pump cover (2) which is covered with a pump body of a liquid adding pump to form a pump cavity (1), a liquid inlet pipe (3) and a liquid outlet pipe (4) which are communicated with the pump cavity (1);

the inlet end of the liquid inlet pipe (3) and the outlet end of the liquid outlet pipe (4) are sleeved with one-way valves, and the one-way valves of the liquid inlet pipe (3) are communicated in a one-way mode from outside to inside; the one-way valve of the liquid outlet pipe (4) is communicated in one way from inside to outside.

2. The end cap structure for a liquid filling pump according to claim 1, wherein: the check valve comprises an outer sleeve (7) and a check structure (8) connected with the outer sleeve (7), the outer sleeve (7) is connected with the liquid inlet pipe (3) or the liquid outlet pipe (4), and the check structure (8) is provided with a check part (801) which enables the check valve to be conducted in a one-way mode.

3. The end cap structure for a liquid filling pump according to claim 2, wherein: in the check valve on the liquid inlet pipe (3), a check structure (8) is positioned inside the outer sleeve (7), and the check part (801) is positioned at one end of the check structure (8) facing the inside of the liquid inlet pipe (3).

4. The end cap structure for a liquid filling pump according to claim 2, wherein: the mounting and positioning device is characterized in that a mounting and positioning groove (10) is formed in the circumferential outer side, close to the inlet end, of the liquid inlet pipe (3) or the circumferential outer side, close to the outlet end, of the liquid outlet pipe (4), and an inner protruding structure (11) suitable for being clamped into the mounting and positioning groove (10) is arranged on the outer sleeve (7).

5. The end cap structure for a liquid filling pump according to claim 2, wherein: one or more annular convex ribs (9) are also arranged on the outer side of the circumference of the outer sleeve (7).

6. The end cap structure for a liquid filling pump according to claim 2, wherein: in the one-way valve on the liquid outlet pipe (4), a non-return structure (8) is positioned outside the outer sleeve (7), and the non-return part (801) is positioned at one end of the non-return structure (8) facing to the outside of the liquid outlet pipe (4).

7. The end cap structure for a liquid filling pump according to claim 1, wherein: the two pump chambers (1) are respectively communicated with the corresponding liquid inlet pipe (3) and the corresponding liquid outlet pipe (4).

8. A liquid feeding pump is characterized in that: comprising a drive mechanism for conveying washing liquid in the pump chamber (1), a pump body and an end cap structure for a filling pump according to any of claims 1-7.

9. A delivery system, characterized by: comprising the charge pump of claim 8.

10. A dishwasher, characterized by: comprising the delivery system of claim 9.

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