CN218739213U - Throttling simplified liquid outlet system - Google Patents

Abstract

The utility model provides a type play liquid system is simplified in throttle, include: the liquid pump device comprises a liquid pump cavity and a piston, and the piston is arranged in a pump cavity of the liquid pump cavity in a reciprocating manner; the liquid inlet one-way valve is arranged in the cavity of the liquid pump and switches the self opening and closing state by means of a self valve core reset structure or the change of the internal pressure of the pump cavity; the liquid inlet flow channel is communicated with the pump cavity through a liquid inlet one-way valve; the liquid outlet one-way valve is arranged in the liquid pump cavity, does not have a valve core resetting structure and is switched to be in a self opening and closing state by the weight of a valve core of the liquid outlet one-way valve and/or the change of the internal pressure of the pump cavity; and the liquid outlet flow passage is communicated with the pump cavity through a liquid outlet one-way valve. The utility model discloses a go out liquid check valve cancellation case reset structure and feed liquor check valve and remain case reset structure's combination form, can simplify the overall structure of throttle simplified type liquid system, realize the throttle effect before the flow peak value appears.

Description

Throttling simplified liquid outlet system

Technical Field

The utility model relates to an oral cavity cleaning technology field especially relates to a type play liquid system is simplified in throttle.

Background

With the improvement of living standard, people's consciousness on oral care is gradually improved, and oral cleaning tools on the market are more diversified, wherein the tooth flushing device as a substitute of the traditional dental floss becomes one of the necessary small household appliances in the family. The basic working principle is that a pump body is used for pumping water from a water tank, and high-pressure pulse water flow which is sprayed for hundreds of times to thousands of times per minute is sprayed through a nozzle to clean food residues and dental plaque in gaps between teeth, massage gums and the like, so that the oral environment is improved.

The existing water pump of the tooth flusher uses a ball valve as a one-way valve, because the piston motion frequency of the water pump of the tooth flusher is higher, and in order to ensure the efficiency of the water pump, valve cores of the inlet and outlet one-way valves are provided with return springs.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, the to-be-solved technical problem of the utility model is to provide a throttle simplified type goes out liquid system, through going out liquid check valve cancellation case reset structure and feed liquor check valve and remain case reset structure's combination form, can simplify the overall structure that throttle simplified type goes out liquid system, realizes the throttle effect before the flow peak value appears, increases liquid injection's total time, increases the injection pulse of liquid and feels.

In order to solve the technical problem, the utility model provides a type play liquid system is simplified in throttle, include:

the liquid pump device comprises a liquid pump cavity and a piston, and the piston is arranged in a pump cavity of the liquid pump cavity in a reciprocating manner;

the liquid inlet one-way valve is arranged in the cavity of the liquid pump and switches the self opening and closing state by means of a self valve core reset structure or the change of the internal pressure of the pump cavity;

the liquid inlet flow channel is communicated with the pump cavity through a liquid inlet one-way valve;

the liquid outlet one-way valve is arranged in the liquid pump cavity, does not have a valve core reset structure and is switched to be in a self-opening and closing state by means of self valve core weight and/or internal pressure change of the pump cavity;

and the liquid outlet flow passage is communicated with the pump cavity through a liquid outlet one-way valve.

Preferably, the throttling simplified type liquid outlet system further comprises a nozzle communicated with the liquid outlet flow passage.

Preferably, the liquid outlet check valve comprises a liquid outlet valve cavity formed in the liquid pump cavity, a liquid outlet valve core restrained in the liquid outlet valve cavity in a floating manner, a liquid outlet valve seat formed in the liquid pump cavity and located on one side of the liquid outlet valve cavity close to the pump cavity, and a jet flow limiting structure for communicating the liquid outlet valve cavity with the liquid outlet flow channel, wherein the liquid outlet valve core abuts against the jet flow limiting structure when the piston performs a liquid discharge stroke, and the liquid outlet valve core abuts against the liquid outlet valve seat when the piston performs a liquid suction stroke.

Preferably, the jet flow limiting structure comprises a jet flow hole formed in the cavity of the liquid pump and a valve core stop piece which is arranged on the wall of the jet flow hole and protrudes radially.

Preferably, the number of the valve core stop parts is multiple, and all the valve core stop parts are in a circumferential array by taking the axis of the jet hole as a circular center line.

Preferably, the liquid inlet check valve comprises a liquid inlet valve body arranged in the liquid pump cavity, a liquid inlet valve core movably arranged in the liquid inlet valve body, a liquid inlet valve seat formed in the liquid inlet flow channel and a liquid suction limiting structure for communicating the liquid inlet valve body with the pump cavity, and a valve core reset piece is arranged between the liquid suction limiting structure and the liquid inlet valve core.

Preferably, the liquid suction limiting structure comprises a limiting column, the limiting column is arranged in the liquid inlet valve body in a semi-suspension mode, and the valve core resetting piece is sleeved on the limiting column.

Preferably, set up the toper pilot hole that communicates in the pump chamber on the periphery wall of liquid pump cavity, the one end of feed liquor valve body has the toper butt head with toper pilot hole joint complex.

Preferably, the flow direction of the liquid inlet check valve coincides with one of the radial direction of the liquid pump cavity, and the flow direction of the liquid outlet check valve coincides with the axial direction of the liquid pump cavity.

Preferably, the liquid pump cavity includes the feed liquor adapter and the liquid outlet adapter that is embedded in the feed liquor adapter, and the inside shaping of feed liquor adapter has the pump chamber, the shaping has on the liquid outlet adapter the liquid outlet runner.

As above, the utility model discloses a type play liquid system is simplified in throttle has following beneficial effect: the piston reciprocates in the pump cavity of the liquid pump under the drive of external force. During the reciprocating motion of the piston, the pump chamber expands or contracts as the stroke of the piston changes. When the piston is pulled back to perform a liquid suction stroke, the volume of the pump cavity is rapidly expanded, negative pressure is generated in the pump cavity, the liquid outlet one-way valve is switched to a closed state due to the negative pressure and the weight of the valve core of the liquid outlet one-way valve, the liquid inlet one-way valve is switched to an open state due to the negative pressure, and liquid sequentially flows through the liquid inlet flow channel and the liquid inlet one-way valve to form the pump cavity. When the piston is pushed out to perform a liquid discharge stroke, the volume of the pump cavity is rapidly reduced, positive pressure is generated in the pump cavity, the liquid inlet one-way valve is switched to a closed state due to the positive pressure and a self valve core resetting structure, the liquid outlet one-way valve is switched to an open state due to the positive pressure, and liquid in the pump cavity is ejected after sequentially flowing through the liquid outlet one-way valve and the liquid outlet flow channel. Compare in traditional advance, the technical scheme that the export check valve all has reset spring, the utility model discloses a throttle simplified type goes out liquid system's play liquid check valve has cancelled the case reset structure similar to the spring, when the piston was done the imbibition stroke by the pullback, goes out the liquid check valve and can not immediately switch to the closed condition, that is to say, the closing time point that goes out the liquid check valve postpones some a little than the current export check valve that has reset spring, nevertheless does not influence the imbibition process of later pump chamber. Thus, part or all of the liquid in the liquid outlet flow channel can be sucked into the pump cavity; when the next liquid discharging stroke starts, the liquid discharged by the piston firstly fills the cavity in the liquid outlet channel, the filling time point of the liquid outlet channel is positioned before the flow peak value of the liquid pump device 1 appears, after the liquid outlet channel is filled, the liquid with higher flow rate is sprayed out from the liquid outlet channel, and the throttling purpose is realized before the flow peak value appears. The liquid inlet one-way valve is provided with a valve core resetting structure, and the liquid inlet one-way valve switches the self opening and closing state by means of the self valve core resetting structure or the internal pressure change of a pump cavity. The valve core resetting structure of the liquid inlet check valve is not canceled, because the liquid inlet check valve can obviously improve the suction capacity of the liquid pump device when the liquid pump device starts to work. Therefore, the utility model discloses a throttle simplified type play liquid system remains case reset structure's combination form through going out liquid check valve cancellation case reset structure and feed liquor check valve, can simplify the overall structure of throttle simplified type play liquid system, realizes the throttle effect before the flow peak value appears, increases liquid jet's total time, increases the injection pulse of liquid and feels.

Drawings

Fig. 1 is a front view of the throttle simplified type liquid outlet system of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is an enlarged view of a portion B in fig. 2.

Description of the element reference numerals

1. Liquid pump device

11. Liquid pump cavity

111. Liquid inlet adapter

111a liquid supply temporary storage cavity

112. Liquid outlet adapter

113. Piston tube

113a communication hole

12. Piston

13. Pump cavity

14. Conical assembly hole

15. Sealing ring

16. Transmission mechanism

17. Driving mechanism

2. Liquid inlet one-way valve

21. Liquid inlet valve body

211. Conical butt joint head

22. Liquid inlet valve core

23. Liquid inlet valve seat

24. Imbibition limit structure

241. Limiting column

25. Valve core reset piece

3. Liquid inlet flow passage

4. Liquid outlet flow passage

5. Liquid outlet one-way valve

51. Liquid outlet valve cavity

52. Liquid outlet valve core

53. Liquid outlet valve seat

54. Jet flow limiting structure

541. Jet hole

542. Valve core stop

6. Nozzle with a nozzle body

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the structures, ratios, sizes, etc. shown in the drawings of the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, changes of the ratio relationship, or adjustment of the sizes should still fall within the scope covered by the technical contents disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

As shown in fig. 1, fig. 2 and fig. 3, the utility model provides a throttling simplification type goes out liquid system, includes:

the liquid pump device 1 comprises a liquid pump cavity 11 and a piston 12, wherein the piston 12 is arranged in a pump cavity 13 of the liquid pump cavity 11 in a reciprocating manner;

the liquid inlet one-way valve 2 is arranged in the liquid pump cavity 11, and the liquid inlet one-way valve 2 switches the self opening and closing state by means of a self valve core reset structure or the internal pressure change of the pump cavity 13;

the liquid inlet flow channel 3 is communicated with the pump cavity 13 through the liquid inlet one-way valve 2;

the liquid outlet one-way valve 5 is arranged in the liquid pump cavity 11, the liquid outlet one-way valve 5 does not have a valve core resetting structure and is switched to be in a self opening and closing state by the weight of a valve core of the liquid outlet one-way valve 5 and/or the change of the internal pressure of the pump cavity 13;

the liquid outlet flow passage 4 is communicated with the pump cavity 13 through the liquid outlet one-way valve 5.

In the present invention, the piston 12 is driven by an external force to reciprocate in the pump cavity 13 of the liquid pump cavity 11. During the reciprocation of the piston 12, the pump chamber 13 expands or contracts as the stroke of the piston 12 changes. When the piston 12 is pulled back to perform a suction stroke, the volume of the pump cavity 13 is expanded, negative pressure is generated in the pump cavity 13, the liquid outlet one-way valve 5 is switched to a closed state due to the negative pressure and the weight of the valve core, the liquid inlet one-way valve 2 is switched to an open state due to the negative pressure, and liquid flows through the liquid inlet flow channel 3 and the liquid inlet one-way valve 2 in sequence to form the pump cavity 13. When the piston 12 is pushed out to perform a liquid discharge stroke, the volume of the pump cavity 13 is reduced, positive pressure is generated in the pump cavity 13, the liquid inlet one-way valve 2 is switched to a closed state due to the positive pressure and a self valve core resetting structure, the liquid outlet one-way valve 5 is switched to an open state due to the positive pressure, and liquid in the pump cavity 13 is ejected after sequentially flowing through the liquid outlet one-way valve 5 and the liquid outlet flow passage 4.

Compare in traditional advance, the technical scheme that the export check valve all has reset spring, the utility model discloses a throttle simplified type goes out liquid system's play liquid check valve 5 has cancelled the case reset structure similar to the spring, when the imbibition stroke was done by the pullback to piston 12, goes out liquid check valve 5 and can not stand the horse to switch to the closed condition, that is to say, goes out liquid check valve 5's closing time point and postpones some a little than the current export check valve that has reset spring, nevertheless does not influence the imbibition process of later pump chamber 13. So that part or all of the liquid in the liquid outlet channel 4 will be sucked into the pump chamber 13; when the next liquid discharging stroke starts, the liquid discharged by the piston 12 fills the cavity in the liquid outlet channel 4, the filling time point of the liquid outlet channel 4 is before the peak flow value of the liquid pump device 1 occurs, and after the liquid outlet channel 4 is filled, the liquid with higher flow rate is ejected from the liquid outlet channel 4, so that the throttling purpose is realized before the peak flow value occurs. Specifically, the piston 12 starts the liquid discharge stroke, and a part of the liquid before the flow peak occurs fills the lumen of the liquid outlet flow path 4, so that a part of the liquid with a low flow rate is not ejected from the liquid outlet flow path 4, that is, the liquid is ejected from the liquid outlet flow path 4 at or close to the flow peak. Therefore, the liquid temporarily reserved in the liquid outlet flow channel 4 can be fully utilized, the liquid is saved, the total duration of liquid injection is prolonged, the liquid injection amount before the peak value of the flow rate appears can be reduced, the aim of saving the liquid before the peak is achieved, and the pulse feeling and the effective utilization rate during liquid injection are improved. The liquid inlet one-way valve 2 has a valve core reset structure, and the liquid inlet one-way valve 2 switches the self opening and closing state by means of the valve core reset structure or the internal pressure change of the pump cavity 13. The valve core resetting structure of the liquid inlet check valve 2 is not canceled, because the liquid inlet check valve 2 can obviously improve the suction capacity of the liquid pump device 1 at the beginning of working.

Therefore, the utility model discloses a throttle simplified type play liquid system is through going out 5 cancellation case reset structures of play liquid check valve and feed liquor check valve 2 combination forms that remain case reset structures, can simplify the overall structure of throttle simplified type play liquid system, realizes the throttle effect before the flow peak value appears, increases liquid jet's total time, increases the injection pulse of liquid and feels.

In order to enable the throttling simplified liquid outlet system to be applied to the tooth flushing device, the throttling simplified liquid outlet system further comprises a nozzle 6 communicated with the liquid outlet flow passage 4. With such a configuration, the liquid in the nozzle 6 firstly flows back to the pump chamber 13 when the piston 12 performs a suction stroke, and then the liquid in the nozzle 6 is replenished when the piston 12 performs a liquid discharge stroke. The tooth flushing device adopts the throttling simplified liquid outlet system, so that the whole structure of the tooth flushing device can be simplified, the whole size of the tooth flushing device is reduced, the endurance time of the liquid storage box is prolonged, and the liquid pulse feeling when the oral cavity of a user is cleaned is increased.

As shown in fig. 2, the liquid pump apparatus 1 further includes a transmission mechanism 16 and a driving mechanism 17, and the piston 12 is drivingly connected to the driving mechanism 17 through the transmission mechanism 16. The piston 12 reciprocates by a drive mechanism 17. As an alternative to the above-described arrangement of the piston 12, a large part of the piston 12 extends into the pump chamber and a small part of the piston 12 extends from the pump chamber 13 and is connected to the transmission 16.

The liquid pump apparatus 1 may be a plunger pump; the transmission mechanism 16 and the driving mechanism 17 are both conventional mechanisms, the transmission mechanism 16 may be an eccentric wheel assembly, and the driving mechanism 17 may be a motor assembly, which will not be described herein again.

As shown in fig. 3, in order to make the liquid outlet check valve 5 switch its open/close state depending on the weight of its valve core and/or the change of the internal pressure of the pump cavity 13, the liquid outlet check valve 5 includes a liquid outlet cavity 51 formed inside the liquid pump cavity 11, a liquid outlet valve core 52 restrained in the liquid outlet cavity 51 in a floating manner, a liquid outlet valve seat 53 formed inside the liquid pump cavity 11 and located at one side of the liquid outlet cavity 51 close to the pump cavity 13, and a jet flow limiting structure 54 communicating the liquid outlet cavity 51 with the liquid outlet flow channel 4, wherein the liquid outlet valve core 52 abuts against the jet flow limiting structure 54 when the piston 12 performs a liquid discharge stroke, and the liquid outlet valve core 52 abuts against the liquid outlet valve seat 53 when the piston 12 performs a liquid suction stroke.

In the structure of the liquid outlet check valve 5, there is no return part like a spring. If the existing outlet one-way valve is provided with the return spring, the valve core of the existing outlet one-way valve can quickly fall to the valve seat when the liquid suction process starts, liquid at the downstream of the valve seat cannot flow back, and the throttling effect is not achieved. And in the utility model, when the piston 12 starts to perform the suction stroke, because the liquid outlet valve core 52 has no reset acting force of the valve core reset structure, the liquid outlet valve core 52 can not be seated immediately (i.e. the liquid outlet check valve 5 can not be switched to the closed state immediately), so that the liquid in the liquid outlet flow passage 4 flows back to the pump cavity 13 for a certain short time, and the seating time point of the liquid outlet valve core 52 is delayed a bit from that of the valve core of the existing outlet check valve. When the piston 12 starts the next discharge stroke, the liquid with the slower flow rate discharged from the pump chamber 13 fills the liquid outlet channel 4, and then the liquid with the faster flow rate is ejected from the liquid outlet channel 4, so that the throttling effect is realized before the flow peak of the liquid pump device 1 occurs. In addition, the closing time point of the liquid outlet check valve 5 can be adjusted by the maximum sinking and floating stroke of the liquid outlet valve core 52 (i.e. the distance between the liquid outlet valve seat 53 and the jet flow limiting structure 54). Therefore, the liquid outlet one-way valve 5 designed in this way can be closed when the piston 12 performs a suction stroke, so that liquid flows back, the liquid with a low flow rate is filled in the liquid outlet flow passage 4 before the liquid pump device 1 has a flow peak, the liquid with a high flow rate is ejected from the liquid outlet flow passage 4, and a pre-peak water saving effect is realized. In addition, by adjusting the lift of the liquid outlet valve core 52 of the liquid outlet check valve 5 and the flow cross section between the liquid outlet valve core 52 and the cavity wall of the liquid outlet valve cavity 51, the seating time point of the liquid outlet valve core 52, that is, the time of delayed closing of the liquid outlet check valve 5 can be adjusted.

In order to simplify the structure of the jet flow limiting structure 54, the jet flow limiting structure 54 includes a jet flow hole 541 formed in the liquid pump cavity 11, and a valve core stopper 542 disposed on a wall of the jet flow hole 541 and protruding radially.

Further, the number of the valve element stoppers 542 is plural, and all the valve element stoppers 542 are circumferentially arrayed around the axis of the jet hole 541 as a center line. So configured, liquid can flow between two circumferentially adjacent spool stops 542; the valve core stopper 542 may be in the form of an ear plate, and the liquid outlet valve core 52 may be in the form of a sphere, so as to reduce the contact area between the valve core stopper 542 and the liquid outlet valve core 52.

In order to improve the liquid suction capacity of the liquid pump device 1 when the liquid pump device starts to work, the liquid inlet check valve 2 comprises a liquid inlet valve body 21 arranged in the liquid pump cavity 11, a liquid inlet valve core 22 movably arranged in the liquid inlet valve body 21, a liquid inlet valve seat 23 formed in the liquid inlet flow channel 3 and a liquid suction limiting structure 24 communicating the liquid inlet valve body 21 with the pump cavity 13, and a valve core reset piece 25 is arranged between the liquid suction limiting structure 24 and the liquid inlet valve core 22. The spool reset 25 may be a spring.

Further, in order to limit the position of the valve element resetting member 25, the liquid suction limiting structure 24 includes a limiting post 241, the limiting post 241 is disposed in the liquid inlet valve body 21 in a half-suspended manner, and the valve element resetting member 25 is sleeved on the limiting post 241. Liquid can flow between the limiting column 241 and the liquid inlet valve body 21.

In order to facilitate positioning and installation of the liquid inlet check valve 2, a conical assembly hole 14 communicated with the pump cavity 13 is formed in the peripheral wall of the liquid pump cavity 11, and a conical abutting joint 211 clamped and matched with the conical assembly hole 14 is arranged at one end of the liquid inlet valve body 21.

In order to make the overall layout of the throttling simplified liquid outlet system more reasonable, the flow direction of the liquid inlet check valve 2 is coincided with one radial direction of the liquid pump cavity 11, and the flow direction of the liquid outlet check valve 5 is coincided with the axial direction of the liquid pump cavity 11. At this time, the liquid inlet check valve 2 can ensure the liquid suction capability of the liquid pump apparatus 1 at the beginning of operation.

In order to facilitate the disassembly and assembly of the liquid pump device 1, the liquid pump cavity 11 includes a liquid inlet adapter 111 and a liquid outlet adapter 112 embedded in the liquid inlet adapter 111, the liquid inlet adapter 111 is internally formed with the pump cavity 13, and the liquid outlet adapter 112 is formed with the liquid outlet flow channel 4.

As shown in fig. 3, in order to facilitate the liquid in the liquid inlet channel 3 to be smoothly introduced into the pump cavity 13, the liquid pump cavity 11 includes a liquid inlet joint 111 and a piston pipe 113 embedded in the liquid inlet joint 111, a liquid supply temporary storage cavity 111a is formed inside the liquid inlet joint 111, and the piston pipe 113 is provided with a plurality of communication holes 113a for communicating the pump cavity 13 with the liquid supply temporary storage cavity 111 a. Specifically, all the communication holes 113a are circumferentially arrayed around the axis of the piston tube 113.

To sum up, the utility model discloses throttle simplified type goes out liquid system remains case reset structure's combination form through going out liquid check valve cancellation case reset structure and feed liquor check valve, can simplify the overall structure of throttle simplified type play liquid system, realizes the throttle effect before the flow peak value appears, increases liquid jet's total time, increases the injection pulse of liquid and feels. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. A throttle simplified type goes out liquid system characterized in that includes:

the liquid pump device (1), the liquid pump device (1) includes the liquid pump cavity (11) and piston (12), the piston (12) is set up in the pump cavity (13) of the liquid pump cavity (11) reciprocally;

the liquid inlet one-way valve (2) is arranged in the liquid pump cavity (11), and the liquid inlet one-way valve (2) switches the opening and closing states of the liquid inlet one-way valve by means of a valve core resetting structure of the liquid inlet one-way valve or the internal pressure change of the pump cavity (13);

the liquid inlet flow channel (3), the liquid inlet flow channel (3) is communicated with the pump cavity (13) through the liquid inlet one-way valve (2);

the liquid outlet one-way valve (5) is arranged in the liquid pump cavity (11), the liquid outlet one-way valve (5) does not have a valve core resetting structure and is switched to be in a self opening and closing state by the self valve core weight and/or the internal pressure change of the pump cavity (13);

the liquid outlet flow passage (4) is communicated with the pump cavity (13) through the liquid outlet one-way valve (5).

2. The throttle simplified type liquid outlet system according to claim 1, characterized in that: the throttling simplified liquid outlet system also comprises a nozzle (6) communicated with the liquid outlet flow passage (4).

3. The throttle simplified type liquid outlet system according to claim 1, characterized in that: the liquid outlet one-way valve (5) comprises a liquid outlet cavity (51) formed in the liquid pump cavity (11), a liquid outlet valve core (52) restrained in the liquid outlet cavity (51) in a floating mode, a liquid outlet valve seat (53) formed in the liquid pump cavity (11) and located on one side, close to the pump cavity (13), of the liquid outlet cavity (51), and a jet flow limiting structure (54) communicating the liquid outlet cavity (51) with the liquid outlet flow channel (4), wherein the liquid outlet valve core (52) abuts against the jet flow limiting structure (54) when the piston (12) is in a liquid discharging stroke, and the liquid outlet valve core (52) abuts against the liquid outlet valve seat (53) when the piston (12) is in a liquid sucking stroke.

4. The throttle simplified tapping system according to claim 3, characterized in that: the jet flow limiting structure (54) comprises a jet flow hole (541) formed in the liquid pump cavity (11) and a valve core stop piece (542) which is arranged on the wall of the jet flow hole (541) and protrudes radially.

5. The throttle simplified tapping system according to claim 4, characterized in that: the number of the valve core stop parts (542) is multiple, and all the valve core stop parts (542) are in a circumferential array by taking the axis of the jet hole (541) as a circular center line.

6. The throttle simplified type liquid outlet system according to claim 1, characterized in that: the liquid inlet one-way valve (2) comprises a liquid inlet valve body (21) arranged in the liquid pump cavity (11), a liquid inlet valve core (22) movably arranged in the liquid inlet valve body (21), a liquid inlet valve seat (23) formed in the liquid inlet flow channel (3) and a liquid suction limiting structure (24) communicating the liquid inlet valve body (21) with the pump cavity (13), and a valve core reset piece (25) is arranged between the liquid suction limiting structure (24) and the liquid inlet valve core (22).

7. The throttle simplified tapping system according to claim 6, characterized in that: imbibition limit structure (24) are including spacing post (241), and spacing post (241) set up in feed liquor valve body (21) half-suspended, spacing post (241) are located to case reset piece (25) cover.

8. The throttle simplified tapping system according to claim 6, characterized in that: set up on the periphery wall of liquid pump cavity (11) and communicate in toper pilot hole (14) of pump chamber (13), the one end of feed liquor valve body (21) has with toper pilot hole (14) joint complex toper butt head (211).

9. The throttle simplified type liquid outlet system according to claim 1, characterized in that: the flow direction of the liquid inlet one-way valve (2) is coincided with one radial direction of the liquid pump cavity (11), and the flow direction of the liquid outlet one-way valve (5) is coincided with the axial direction of the liquid pump cavity (11).

10. The throttle simplified type liquid outlet system according to claim 1, characterized in that: liquid pump cavity (11) include feed liquor adapter (111) and embedded play liquid adapter (112) in feed liquor adapter (111), and the inside shaping of feed liquor adapter (111) has pump chamber (13), go out the shaping on liquid adapter (112) and have go out liquid runner (4).

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