CN202553565U

CN202553565U - Safety valve of coffee maker

Info

Publication number: CN202553565U
Application number: CN2012201518480U
Authority: CN
Inventors: 蒋春华
Original assignee: NINGBO YAT ELECTRICAL APPLIANCE CO Ltd
Current assignee: ZHEJIANG KUFEER ELECTRICAL APPLIANCE Co Ltd
Priority date: 2012-04-11
Filing date: 2012-04-11
Publication date: 2012-11-28
Anticipated expiration: 2022-04-11

Abstract

The utility model discloses a safety valve of a coffee maker. A water inlet is communicated with a valve cavity through a water inlet channel. A movable piece is arranged in the water inlet and sealed with the inner wall of the water inlet in sliding mode. The middle of the movable piece is provided with a pressurizing hole. A spring A is disposed between the right end of the movable piece and the left end of the water inlet channel. A clearance space is formed between the right end face of the movable piece and the left end face of the water inlet channel under the action of elastic force of the spring A. A plug A is arranged at the right end of the water inlet channel and seals the water inlet channel after being ejected and pressed by elasticity of a spring B. The clearance space between the right end of the movable piece and the left end of the water inlet channel is communicated with a decompression opening through an exhaust passage, and air flows out of the decompression opening when an electromagnetic pump is used to pump air. The safety valve of the coffee maker is simple in operating principles, convenient to assemble and reliable in performance, and overcomes the defect that cost of a complete machine is increased substantially due to adoption of a three-way solenoid valve.

Description

A kind of coffee machine safety valve

Technical field

The utility model relates to a kind of safety valve, relates in particular to a kind of safety valve that is used for coffee machine.

Background technology

In order to brew out delicious and fizzy coffee; Must use enough pressure and temperature water to brew, the present pressure that generally adopts electromagnetic pump to increase water, but electromagnetic pump has a shortcoming; Find time exactly behind the water in the water tank; Can be drawn into air in boiler or the pipeline, owing in boiler or the pipeline air is arranged, the situation that water can occur not taking out during electromagnetic pump startup next time.In the prior art, in order to realize the purpose of exhaust, enterprise has to adopt three-way magnetic valve when producing coffee machine, but the price comparison of three-way magnetic valve is expensive, can improve the production cost of enterprise, reduces the profit of enterprise greatly.

The utility model content

The utility model technical problem to be solved just provides a kind of coffee machine safety valve, can just start the air in the moment emptying pipe at water pump, and simple and practical, with low cost, easy to assembly, dependable performance.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of coffee machine safety valve comprises valve body; Be provided with valve pocket in the valve body, it is characterized in that: said valve body left end is provided with water inlet, and said water inlet is communicated with valve pocket through an inlet channel; Said valve body upper end is provided with delivery port and is communicated with valve pocket; Said valve body lower end is provided with pressure relief opening, be provided with in the said water inlet one with the movable part of water inlet inwall slipper seal, said movable part middle part is provided with a pressurized hole; Be provided with spring A between said movable part right-hand member and inlet channel left end; Forming a clearance space under the effect of spring A elastic force between movable part right side and inlet channel left side, said inlet channel right-hand member is established a plug A, and said plug A is by spring B elastic top means of press seals inlet channel; During water inlet water inlet state; Because pressurized hole effect movable part left end hydraulic pressure increases and greater than the screen resilience of spring A; Movable part is sealed the inlet channel left side to inlet channel motion and movable part right side, water inlet through after the pressurized hole supercharging through inlet channel and wash plug A open and flow out from delivery port at last; Said movable part right-hand member is communicated with pressure relief opening through exhaust duct with clearance space between the inlet channel left end, and air flows out from pressure relief opening when electromagnetic pump is bled.

As preferably, be communicated with valve pocket through a relief hole on the said pressure relief opening, said relief hole lower end is provided with a plug B, and said plug B lower end is provided with a spring C elasticity roof pressure plug B and blocks relief hole.

As preferably, said pressure relief opening lower end connects a backwater joint, is provided with the backwater joint sealing ring between said backwater joint and pressure relief opening lower end.

As preferably, said movable part is the tubular silica gel spare of tube bottom surface to inlet channel, said movable part outer tube wall with contact with the slipper seal of water inlet inwall.

As preferably, said movable part inner tube wall is step-like, and the movable part inner diameter of steel flue is diminished at the bottom of tube by nozzle step by step, and said pressurized hole is a bellmouth.

As preferably, external diameter equates less than the water inlet internal diameter and with inlet channel left end external diameter at the bottom of the said movable part tube, and said spring A left end is socketed at the bottom of the movable part tube, and spring A right-hand member is socketed on the inlet channel left end outer wall.

As preferably; Said valve inleting water mouth connects water supply connector, and said water inlet left end excircle is provided with a circle bulge loop, and said water supply connector right-hand member is provided with grab; Said grab is connected on the bulge loop, is provided with the water supply connector sealing ring between said water inlet left end inner periphery and water supply connector.

As preferably, said water inlet left end inwall is provided with a circle annular groove, and said water supply connector right-hand member is provided with a circle flange, and said water supply connector sealing ring is located in the sealing ring that said annular groove and flange surround.

As preferably, said valve body right-hand member is provided with valve port, and valve port is sealed by valve gap, is provided with the valve bonnet seal circle between said valve gap and valve port.

As preferably, said valve body is a plastic valve.

After the safety valve of the utility model inserted coffee machine, when the firm startup of water pump had been in low-pressure state, safety valve can be back to air in the pipeline and low-pressure water in water tank or the atmosphere, so that water pump can draw up water smoothly; When water pump in working order and under the situation about being plugged of water side, the pressure in the pipeline can increase, when surpassing safe pressure, check valve can be opened automatically, to guarantee safety.Because the material that uses is plastics, rubber and spring, relative low price reaches the function of exhaust pressure relief through the motion of movable silica gel spare; Operation principle is simple; Easy to assembly, dependable performance has overcome the deficiency that adopts three-way magnetic valve that the complete machine cost is significantly increased.

Description of drawings

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is further described:

Fig. 1 is the utility model perspective view;

Fig. 2 is the utility model cutaway view;

Fig. 3 is the utility model decomposing schematic representation.

The specific embodiment

Specify referring to figs. 1 to Fig. 3 and to be a kind of coffee machine safety valve of the utility model embodiment,

It comprises valve body 5, is provided with valve pocket in the valve body, and said valve body left end is provided with water inlet; Said water inlet is communicated with valve pocket through an inlet channel, and said valve body upper end is provided with delivery port 14 and is communicated with valve pocket, and said valve body lower end is provided with pressure relief opening; Be provided with in the said water inlet one with the movable part 3 of water inlet inwall slipper seal; Said movable part middle part is provided with a pressurized hole, is provided with spring A4 between said movable part right-hand member and inlet channel left end, is forming a clearance space under the effect of spring A elastic force between movable part right side and inlet channel left side; Said inlet channel right-hand member is established a plug A6, and said plug A is by spring B 7 elastic top means of press seals inlet channels; During water inlet water inlet state; Because pressurized hole effect movable part left end hydraulic pressure increases and greater than the screen resilience of spring A; Movable part is sealed the inlet channel left side to inlet channel motion and movable part right side, water inlet through after the pressurized hole supercharging through inlet channel and wash plug A open and flow out from delivery port at last; Said movable part right-hand member is communicated with pressure relief opening through exhaust duct with clearance space between the inlet channel left end, and air flows out from pressure relief opening when electromagnetic pump is bled.Said pressure relief opening upper end is communicated with valve pocket through a relief hole, and said relief hole lower end is provided with a plug B10, and said plug B lower end is provided with a spring C11 elasticity roof pressure plug B and blocks relief hole.Said pressure relief opening lower end connects a backwater joint 13, is provided with backwater joint sealing ring 12 between said backwater joint and pressure relief opening lower end.Said movable part be the tube bottom surface to the tubular silica gel spare of inlet channel, said movable part outer tube wall with contact with the slipper seal of water inlet inwall.Said movable part inner tube wall is step-like, and the movable part inner diameter of steel flue is diminished at the bottom of tube by nozzle step by step, and said pressurized hole is a bellmouth.External diameter equates less than the water inlet internal diameter and with inlet channel left end external diameter at the bottom of the said movable part tube, and said spring A left end is socketed at the bottom of the movable part tube, and spring A right-hand member is socketed on the inlet channel left end outer wall.Said valve inleting water mouth connects water supply connector 1; Said water inlet left end excircle is provided with a circle bulge loop; Said water supply connector right-hand member is provided with grab, and said grab is connected on the bulge loop, is provided with water supply connector sealing ring 2 between said water inlet left end inner periphery and water supply connector.Said water inlet left end inwall is provided with a circle annular groove, and said water supply connector right-hand member is provided with a circle flange, and said water supply connector sealing ring is located in the sealing ring that said annular groove and flange surround.Said valve body right-hand member is provided with valve port, and valve port is provided with valve bonnet seal circle 8 by valve gap 9 sealings between said valve gap and valve port.Said valve body is a plastic valve.

Operation principle:

When 1, normally making coffee, the water in the water tank is through electromagnetic pump process water supply connector 1, arrival activity silica gel spare then; Because the pressurized hole of movable silica gel spare is less, the water that receives high pressure through the time, suffered power can be greater than the screen resilience of spring A4; This active rubber spare can be along the motion of the aspect of current; So that the end face of rubber parts can be sealed the end face of valve body 5 inlet channels, and the water of high pressure can be washed plug A6 open, after delivery port gets into boiler.When electromagnetic pump quit work, spring A can be with the resilience of active rubber spare.

2, degassing function: after the water in the coffee machine water tank is drained; Add entry once more and carry out work, start electromagnetic pump, the air in the pipeline can be through water supply connector 1; Then through movable silica gel spare; Because the air pressure in the pipeline is little, can not move by promotion activity silica gel spare, so air can be from flowing out from backwater joint 13 through exhaust duct and pressure relief opening.After air had been arranged, water pump can be extracted into water supply connector 1 to water, then arrival activity silica gel spare; Because the pressurized hole of movable silica gel spare is less, the water that receives high pressure through the time, suffered power can be greater than the screen resilience of spring A4; This active rubber spare can be along the motion of the aspect of current; So that the end face of rubber parts can be sealed the end face of valve body 5 inlet channels, and the water of high pressure can be washed plug A6 open, after delivery port gets into boiler.

3, pressure release function: when pipeline was plugged, after internal pressure surpassed the elastic force of spring C11, hydraulic pressure can be washed plug B10 open, makes the water of high pressure be back to water tank through backwater joint, reaches safe effect.

Claims

1. A safety valve for a coffee machine, comprising a valve body (5), in which a valve chamber is provided, characterized in that: the left end of the valve body is provided with a water inlet, and the water inlet communicates with the valve chamber through a water inlet, The upper end of the valve body is provided with a water outlet (14) to communicate with the valve chamber, the lower end of the valve body is provided with a pressure relief port, and the water inlet is provided with a movable part (3) that slides and seals with the inner wall of the water inlet. There is a pressurized hole in the middle of the movable part, and a spring A (4) is provided between the right end of the movable part and the left end of the water inlet. Under the elastic force of spring A, a gap is formed between the right end surface of the movable part and the left end surface of the water inlet. There is a plug A (6) at the right end of the water inlet, and the plug A is elastically pressed by the spring B (7) to seal the water inlet; when the water inlet is in the water state, the water pressure at the left end of the movable part increases due to the booster hole and Greater than the rebound force of spring A, the movable part moves toward the water inlet and the right end surface of the movable part seals the left end surface of the water inlet, and the incoming water is pressurized through the booster hole, passes through the water inlet and flushes through the plug A, and finally flows out from the water outlet; The gap space between the right end of the movable part and the left end of the water inlet communicates with the pressure relief port through the exhaust passage, and the air flows out from the pressure relief port when the electromagnetic pump pumps air.

2. A coffee machine safety valve according to claim 1, characterized in that: the upper end of the pressure relief port communicates with the valve cavity through a pressure relief hole, and a plug B (10) is provided at the lower end of the pressure relief hole , The lower end of the plug B is provided with a spring C (11) elastically pressing the plug B to seal the pressure relief hole.

3. A coffee machine safety valve according to claim 2, characterized in that: the lower end of the pressure relief port is connected to a return water joint (13), and a return water connection is provided between the return water joint and the lower end of the pressure relief port Joint seal (12).

4. A coffee machine safety valve according to claim 3, characterized in that: the movable part is a cylindrical silicone part whose bottom faces the water inlet, and the outer cylinder wall of the movable part slides with the inner wall of the water inlet Sealed contacts.

5. A coffee machine safety valve according to claim 4, characterized in that: the inner cylinder wall of the movable part is stepped, and the diameter of the inner cylinder of the movable part gradually decreases from the mouth of the cylinder to the bottom of the cylinder, and the pressurized The hole is a tapered hole.

A coffee machine safety valve according to claim 5, characterized in that: the outer diameter of the cylinder bottom of the movable part is smaller than the inner diameter of the water inlet and equal to the outer diameter of the left end of the water inlet, and the left end of the spring A is sleeved on the movable At the bottom of the cylinder, the right end of spring A is sleeved on the outer wall of the left end of the water inlet.

7. A safety valve for a coffee machine according to claim 6, characterized in that: the water inlet of the valve body is connected to the water inlet joint (1), the outer circumference of the left end of the water inlet is provided with a ring of convex rings, and the water inlet A hook is provided at the right end of the water joint, and the hook is clamped on the protruding ring, and a sealing ring (2) of the water inlet joint is provided between the inner circumference of the left end of the water inlet and the water inlet joint.

8. A coffee machine safety valve according to claim 7, characterized in that: the inner wall of the left end of the water inlet is provided with a ring groove, the right end of the water inlet connector is provided with a ring flange, and the water inlet connector is sealed The ring is arranged in the sealing ring surrounded by the ring groove and the flange.

9. A coffee machine safety valve according to claim 1, characterized in that: a valve port is provided at the right end of the valve body, and the valve port is closed by a valve cover (9), and there is a valve between the valve cover and the valve port Bonnet seal (8).

10. A safety valve for a coffee machine according to claim 1, wherein the valve body is a plastic valve.