CN217401820U

CN217401820U - Air-defense pumping valve

Info

Publication number: CN217401820U
Application number: CN202220685219.XU
Authority: CN
Inventors: 毛朝晖
Original assignee: Ningbo AAA Group Electric Appliance Co Ltd
Current assignee: Ningbo AAA Group Electric Appliance Co Ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-09-09
Anticipated expiration: 2032-03-25

Abstract

An air-defense pumping valve comprises a valve casing, wherein the valve casing is provided with a water inlet, a water outlet and a water return port, a water inlet channel with the water inlet, a water outlet channel with the water outlet and a water return channel with the water return port are arranged in the valve casing, the water inlet channel, the water outlet channel and the water return channel are respectively communicated through a first valve port and a second valve port, a one-way valve core made of flexible materials is arranged at the first valve port, and an exhaust valve core made of flexible materials is arranged at the second valve port; when the water inlet pressure is lower than the first preset pressure, the one-way valve core closes the first valve port, and a gap exists between the exhaust valve core and the second valve port to open the second valve port; when the water inlet pressure reaches or is greater than the first preset pressure, the water inlet pressure enables the one-way valve core to generate elastic deformation to open the first valve port, and the water inlet pressure enables the exhaust valve core to generate elastic deformation to be in sealing and abutting contact with the second valve port so as to close the second valve port.

Description

Air-defense pumping valve

Technical Field

The utility model relates to an accessory technical field of device is prepared to the beverage, concretely relates to air defense take-out valve.

Background

A coffee maker, which is a beverage extracting apparatus, mainly includes an extracting part for preparing coffee and a pressurized water supplying part for supplying hot water to the extracting part. Wherein, the extraction part adopts high-temperature high-pressure extraction to obtain better brewing effect; the pressurized water supply part mainly comprises a water tank component, a water pump, a one-way valve and a boiler which are connected in sequence, and a safe pressure relief channel is also arranged between the boiler and the water tank. When coffee is prepared, the pressure in the boiler is insufficient, the water pump is started, water is pumped from the water tank, and the water is pushed to open the one-way valve and is injected into the boiler for heating; when the water pressure in the boiler rises due to heating and exceeds the upper limit of the set value, the water flows back to the water tank from the safe pressure relief channel.

When the water pump is used for the first time or used again after being stopped for a period of time, the water pump can generate an air pumping phenomenon, so that the problems that water cannot be pumped, air in the boiler body is difficult to discharge and the like are caused, and especially when pressure is stored in the boiler, the water pump is more likely to be damaged due to the fact that water cannot be pumped for a long time.

In order to solve the problems, the Chinese patent with the patent number ZL201410679935.7 (with the publication number CN104565462A) discloses an air-pumping-proof automatic pressure relief valve, which comprises a valve body with a water inlet cavity, a water outlet cavity, a pressure regulating cavity and a water return cavity; the water outlet cavity is communicated with the water inlet cavity through a water outlet hole, and a one-way valve core capable of plugging or opening the water outlet hole is arranged in the water outlet cavity; the pressure regulating cavity is communicated with the water outlet cavity through a pressure relief hole, and a pressure relief valve core capable of plugging or opening the pressure relief hole is arranged in the pressure regulating cavity; the water return cavity is communicated with the pressure regulating cavity; the method is characterized in that: the water inlet cavity is communicated with the water return cavity through the exhaust hole, the exhaust valve core capable of plugging or opening the exhaust hole is installed in the water inlet cavity, and the exhaust valve supporting spring with elasticity smaller than that of the compression spring of the one-way valve is supported on the front portion of the exhaust valve core, so that the exhaust valve core has the tendency of always keeping the exhaust hole open.

Above-mentioned automatic relief valve is taken out to air defense is through opening the air release valve core under exhaust state in order to exhaust the water pump to prevent that the water pump from taking out by air. However, the air-release preventing automatic relief valve is complicated in structure, involves many parts, is high in manufacturing cost, and requires a large amount of assembly work, and therefore, needs to be further improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to foretell technical current situation and provide a simple structure, thereby the part is few the cost is lower, the assembly is more convenient air defense take-out valve.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides an air-defense suction valve, includes the valve casing, water inlet, delivery port and return water mouth have been seted up on the valve casing, the valve casing is inside to be equipped with to have the inhalant canal of water inlet, have the exhalant canal of delivery port and have the return water passageway of return water mouth, its characterized in that: the water inlet channel is communicated with the water outlet channel through a first valve port, a one-way valve core made of flexible materials is arranged at the first valve port, the water inlet channel is communicated with the water return channel through a second valve port, and an exhaust valve core made of flexible materials is arranged at the second valve port;

when the water inlet pressure is lower than a first preset pressure, the check valve core always has the tendency of closing the first valve port, so that the first valve port is in a closed state, and a gap exists between the exhaust valve core and the second valve port, so that the second valve port is in an open state; when the water inlet pressure reaches or is greater than the first preset pressure, the one-way valve core opens the first valve port under the action of the water inlet pressure due to elastic deformation, and the exhaust valve core abuts against the second valve port under the action of the water inlet pressure due to elastic deformation in a sealing mode so as to close the second valve port. The term "closed" as used herein means either completely closed or substantially closed, i.e., allowing a small amount of water leakage.

In order to facilitate connection of the exhaust valve core and the valve shell, a second mounting hole communicated with the water outlet channel is formed in the side wall of the water return channel, the exhaust valve core is arranged in the second mounting hole in a penetrating mode, an expansion portion located in the water outlet channel is arranged on the upper portion of the exhaust valve core and can abut against the side wall of the water return channel, and a valve block matched with the second valve opening is arranged at the lower end of the exhaust valve core.

In order to facilitate pressure relief in overpressure, a pressure relief hole is further formed in the side wall of the water return channel and is a blind hole, the opening of the pressure relief hole faces the water outlet channel, the bottom wall of the pressure relief hole is of a thin-wall structure, and when the water inlet pressure is higher than a second preset pressure, the bottom wall of the pressure relief hole is broken to enable the pressure relief hole to be communicated with the water outlet channel and the water return channel.

In order to avoid the valve block to close the second valve port when being less than the first preset pressure, the top wall of the water inlet channel is provided with a gap communicated with the second valve port, and when the water inlet pressure is less than the first preset pressure, the valve block can form the gap with the gap.

In order to enable the valve block and the second valve port to easily form a gap when the water inlet pressure is lower than the first preset pressure and to enable the valve block and the second valve port to have better sealing connection effect when the water inlet pressure reaches or is higher than the first preset pressure, the second valve port is a conical port; at least part of the peripheral wall of the valve block is a conical surface matched with the conical opening, the upper part of the valve block is provided with a tapered section by the conical surface, and the conical degree of the conical surface is greater than that of the conical opening.

In order to facilitate the installation of the exhaust valve core, the upper end of the expansion part is connected with a second traction part, and the second traction part is used for pulling the expansion part during assembly so as to enable the exhaust valve core to penetrate through the second installation hole from bottom to top.

In order to facilitate the connection of the valve shell and the one-way valve core, a valve plate matched with the first valve port is arranged at the upper end of the one-way valve core; the water inlet channel is internally provided with a connecting ring, the connecting ring is provided with a first mounting hole, and the lower part of the one-way valve core is provided with a reducing section inserted in the first mounting hole so that the one-way valve core is arranged in the connecting ring in a penetrating way.

In order to facilitate the installation of the one-way valve core, the lower end of the one-way valve core is provided with a first traction part, and the first traction part is used for pulling the one-way valve core during assembly so as to enable the one-way valve core to penetrate through the first installation hole from top to bottom. After the one-way valve core and/or the exhaust valve core are installed, all or part of the first traction part and/or the second traction part can be removed according to needs.

In order to facilitate the processing of the one-way valve core and the exhaust valve core, the one-way valve core and/or the exhaust valve core are of an integrated structure made of silica gel.

Compared with the prior art, the utility model has the advantages of: through the check valve core that sets up flexible material at first valve port, set up the air release valve core of flexible material in second valve port department, and combine the check valve core through the size of control pressure of intaking, the elastic deformation performance of air release valve core self, realize the play water state and the exhaust state of air release valve, compare in the cooperation that realizes check valve core and first valve port through the elastic reaction that relies on the spring, and the cooperation of air release valve core and second valve port, this air release valve need not to set up the spring, thereby make part quantity still less, the structure is simpler, can reduce manufacturing cost, also can simplify the assembly process, it is more convenient to make the assembly, in addition, can also reduce the spring and occupy the inside space of valve casing, do benefit to the miniaturized design of air release valve.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

fig. 2 is a longitudinal sectional view of an embodiment of the present invention;

FIG. 3 is a perspective view of the check valve core according to the embodiment of the present invention;

fig. 4 is a perspective view of the exhaust valve element according to the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1-4, it is a preferred embodiment of the anti-empty pumping valve of the present invention.

The air-extraction preventing valve in this embodiment includes, as shown in fig. 1, a valve housing 1, a water outlet pipe joint 2, a check valve element 3, an air exhaust valve element 4, and other main components.

As shown in fig. 2, the upper end of the valve housing 1 is provided with a water outlet 120, and the water outlet 120 is used for communicating with a boiler; the upper end of the valve shell 1 is connected with a water outlet pipe connector 2 in a threaded manner. The lower end part of the valve casing 1 is provided with a water inlet 110, the water inlet 110 is used for being communicated with a water pump, and the lower end of the valve casing 1 is provided with a joint part 19 used for being connected with the water pump. One side is equipped with return water mouth 130 on the valve casing 1 circumference, and this return water mouth 130 is used for communicating with the water tank. The valve housing 1 is provided therein with a water inlet passage 11 having the water inlet 110, a water outlet passage 12 having the water outlet 120, and a water return passage 13 having a water return port 130.

As shown in fig. 2, a first valve port 15 and a second valve port 16 are formed in the valve housing 1, and the water inlet channel 11 and the water outlet channel 12 are communicated through the first valve port 15, so that the inlet water flows into the water outlet channel 12 through the first valve port 15; the water inlet channel 11 and the water return channel 13 are communicated through the second valve port 16, so that the inlet water flow enters the water return channel 13 through the second valve port 16. A check valve core 3 made of flexible materials is arranged at the first valve port 15, and the check valve core 3 is used for opening or closing the first valve port 15; an exhaust valve core 4 made of flexible materials is arranged at the second valve port 16, and the exhaust valve core 4 is used for opening or closing the second valve port 16.

When the water inlet pressure is lower than the first preset pressure, the one-way valve core 3 always has the trend of closing the first valve port 15, so that the first valve port 15 is in a closed state; the second valve port 16 is in an open state due to a gap between the exhaust valve body 4 and the second valve port 16, and at this time, the anti-blank valve is in an exhaust state. When the water inlet pressure reaches or is greater than the first preset pressure, the one-way valve core 3 opens the first valve port 15 due to elastic deformation under the action of the water inlet pressure, and the exhaust valve core 4 is in sealing abutment with the second valve port 16 due to elastic deformation under the action of the water inlet pressure, so that the second valve port 16 is closed. The term "closed" as used herein means either completely closed or substantially closed, i.e., allowing a small amount of water leakage.

In this embodiment, compare in the cooperation that realizes check valve core 3 and first valve port 15 through the elastic action that relies on the spring, and the cooperation of air release valve core 4 and second valve port 16, this air-break prevention valve takes out need not to set up the spring to make part quantity still less, the structure is simpler, can reduction in production cost, also can simplify the assembly process, it is more convenient to make the assembly, in addition, can also reduce the spring and occupy the space of valve casing 1 inside, do benefit to the miniaturized design of air-break prevention valve.

The upper end of the one-way valve core 3 is provided with a valve plate 31 (see fig. 2-3) matched with the first valve port 15. The water inlet channel 11 is provided with a connecting ring 5 (see fig. 2) with a first mounting hole 51, the lower part of the one-way valve core 3 is provided with a reducing section 32 (see fig. 3) inserted in the first mounting hole 51, and the cooperation of the reducing section 32 and the first mounting hole 51 enables the one-way valve core 3 to be arranged in the connecting ring 5 in a penetrating way. In this embodiment, the connection ring 5 is integrally connected to the valve housing 1. The lower end of the one-way valve core 3 is provided with a first traction part which is used for pulling the one-way valve core 3 during assembly so as to enable the one-way valve core 3 to penetrate through the first mounting hole 51 from top to bottom, thereby facilitating the assembly of the one-way valve core 3. The first traction portion of the check valve spool 3 in this embodiment has been trimmed away and is therefore not shown in the drawings.

The side wall of the water return channel 13 is provided with a second mounting hole 14 communicated with the water outlet channel 12, the exhaust valve core 4 is arranged in the second mounting hole 14 in a penetrating way, the upper part of the exhaust valve core 4 is provided with an expanded part 42 positioned in the water outlet channel 12, the expanded part 42 can be abutted against the side wall of the water return channel 13, and the lower end of the exhaust valve core 4 is provided with a valve block 41 matched with the second valve port 16. The top wall of the water inlet passage 11 is opened with a slit 18 (see fig. 1-2) communicating with the second valve port 16, and the valve block 41 can form the gap with the slit 18 (see fig. 2) when the water inlet pressure is less than the first preset pressure. The second valve port 16 is a tapered port; the peripheral wall of the valve block 41 is at least partially provided with a conical surface 411 matched with the conical opening, the upper part of the valve block 41 is provided with a tapered section (see fig. 2-3) by the conical surface 411, and the taper of the conical surface 411 is greater than that of the conical opening (see fig. 2), so that a gap can be easily formed between the valve block 41 and the second valve opening 16 when the water inlet pressure is less than the first preset pressure, and meanwhile, the sealing connection effect between the valve block 41 and the second valve opening 16 when the water inlet pressure reaches or is greater than the first preset pressure is better. The side wall of the water return channel 13 is also provided with a pressure relief hole 17, the pressure relief hole 17 is a blind hole, the opening of the pressure relief hole 17 faces the water outlet channel 12, the bottom wall of the pressure relief hole 17 is of a thin-wall structure (see fig. 2), when the water inlet pressure is greater than a second preset pressure, the bottom wall of the pressure relief hole 17 is broken, so that the pressure relief hole 17 is communicated with the water outlet channel 12 and the water return channel 13, and the pressure relief is facilitated when the water inlet pressure is overpressure. The upper end of this portion of expanding 42 is connected with the second portion of drawing, and this second portion of drawing is arranged in pulling expansion portion 42 so that exhaust valve core 4 wears to locate in second mounting hole 14 from bottom to top when the assembly to be convenient for assemble exhaust valve core 4. The second traction portion of the exhaust valve spool 4 in this embodiment has been trimmed away and is therefore not shown.

In order to make the check valve core 3 and the exhaust valve core 4 more convenient to process, the check valve core 3 and the exhaust valve core 4 in the embodiment are of an integrated structure made of silica gel.

The operating principle of the air-defense suction valve in the embodiment is as follows:

before use, the water inlet 110 is communicated with the outlet of a water pump, the water outlet pipe joint 2 is communicated with the inlet of a boiler, and the water return port 130 is communicated with the inlet of a water tank.

The water outlet working process comprises the following steps: when the water inlet pressure reaches or is higher than the first preset pressure, the water inflow impacts the valve plate 31 of the one-way valve core 3, so that the valve plate 31 is elastically deformed to open the first valve port 15, the water inflow impacts the valve block 41 of the exhaust valve core 4, so that the valve block 41 is elastically deformed to be in sealing abutment with the second valve port 16, and the second valve port 16 is closed, and the water flow pumped out from the water pump enters the boiler through the water inlet 110, the water inlet channel 11, the first valve port 15, the water outlet channel 12 and the water outlet 120.

The exhaust working process: when the water pump is used for the first time or used again after being stopped for a period of time, the water pump can generate a blank pumping phenomenon, at the moment, the water inlet pressure is lower than the first preset pressure, the elastic deformation of the valve plate 31 is not enough to open the first valve port 15 so as to enable the first valve port 15 to be in a closed state, the elastic deformation of the valve block 41 is not enough to close the second valve port 16 so as to enable the second valve port 16 to be in an open state due to a gap between the valve block 41 and the second valve port 16, therefore, water pumped out from the water pump flows into the water tank through the water inlet 110, the water inlet channel 11, the second valve port 16, the water return channel 13 and the water return port 130, air in the water pump enters the water tank, the air in the water pump can be discharged out smoothly, and after the air in the water pump is discharged out, the water pump is in a normal use state.

And (3) a pressure relief protection process: when the coffee machine pipeline is unusual, form the high pressure in the air-raid relief valve, when pressure of intaking was greater than the second and predetermines pressure, the diapire of pressure release hole 17 will break in order to carry out the pressure release.

Claims

1. The utility model provides an air defense is taken out valve, includes valve casing (1), water inlet (110), delivery port (120) and return water mouth (130) have been seted up on valve casing (1), valve casing (1) inside is equipped with have inlet channel (11) of water inlet (110), have outlet channel (12) of delivery port (120) and have return water passageway (13) of return water mouth (130), its characterized in that: the water inlet channel (11) is communicated with the water outlet channel (12) through a first valve port (15), a one-way valve core (3) made of flexible materials is arranged at the first valve port (15), the water inlet channel (11) is communicated with a water return channel (13) through a second valve port (16), and an exhaust valve core (4) made of flexible materials is arranged at the second valve port (16);

when the water inlet pressure is lower than a first preset pressure, the check valve core (3) always has the tendency of closing the first valve port (15) to enable the first valve port (15) to be in a closed state, and a gap is formed between the exhaust valve core (4) and the second valve port (16) to enable the second valve port (16) to be in an open state; when the water inlet pressure reaches or exceeds a first preset pressure, the one-way valve core (3) opens the first valve port (15) due to elastic deformation under the action of the water inlet pressure, and the exhaust valve core (4) is in sealing abutment with the second valve port (16) due to elastic deformation under the action of the water inlet pressure so as to close the second valve port (16).

2. The anti-empty draw valve of claim 1, wherein: a second mounting hole (14) communicated with the water outlet channel (12) is formed in the side wall of the water return channel (13), the exhaust valve core (4) penetrates through the second mounting hole (14), an expansion part (42) located in the water outlet channel (12) is arranged at the upper part of the exhaust valve core (4), the expansion part (42) can abut against the side wall of the water return channel (13), and a valve block (41) matched with the second valve port (16) is arranged at the lower end of the exhaust valve core (4).

3. The anti-empty draw valve of claim 2, wherein: still opened pressure release hole (17) on the lateral wall of return water passageway (13), this pressure release hole (17) are the blind hole, just pressure release hole (17) opening orientation exhalant canal (12), the diapire of pressure release hole (17) is thin-walled structure, when pressure of intaking is greater than the second and predetermines pressure, the diapire of pressure release hole (17) will break and make pressure release hole (17) intercommunication exhalant canal (12) and return water passageway (13).

4. The anti-empty draw valve of claim 2, wherein: the top wall of the water inlet channel (11) is provided with a gap (18) communicated with the second valve port (16), and when the water inlet pressure is smaller than a first preset pressure, the valve block (41) and the gap (18) can form the gap.

5. The anti-empty draw valve of claim 2, wherein: the second valve port (16) is a conical port; the peripheral wall of the valve block (41) is at least partially provided with a conical surface (411) matched with the conical opening, the conical surface enables the upper part of the valve block (41) to be provided with a tapered section, and the conical degree of the conical surface (411) is larger than that of the conical opening.

6. The anti-empty draw valve of claim 2, wherein: the upper end of the expansion part (42) is connected with a second traction part, and the second traction part is used for pulling the expansion part (42) during assembly so as to enable the exhaust valve core (4) to penetrate through the second mounting hole (14) from bottom to top.

7. The anti-empty draw valve of claim 1, wherein: the upper end of the one-way valve core (3) is provided with a valve plate (31) matched with the first valve port (15); be equipped with connecting ring (5) in inhalant canal (11), this connecting ring (5) have first mounting hole (51), the lower part of one-way valve core (3) is equipped with and inserts and arrange in reducing section (32) in first mounting hole (51) and make one-way valve core (3) wear to locate in connecting ring (5).

8. The anti-empty draw valve of claim 7, wherein: the lower end of the one-way valve core (3) is provided with a first traction part, and the first traction part is used for pulling the one-way valve core (3) during assembly so that the one-way valve core (3) penetrates through the first mounting hole (51) from top to bottom.

9. An anti-empty pump valve according to any of claims 1 to 8, characterized in that: the one-way valve core (3) and/or the exhaust valve core (4) are of an integrated structure made of silica gel materials.