CN202775903U

CN202775903U - Decompression valve

Info

Publication number: CN202775903U
Application number: CN 201220247830
Authority: CN
Inventors: 景昱东; 游军
Original assignee: Ningbo Quanjing Electric Technology Co Ltd
Current assignee: Ningbo Quanjing Electric Technology Co Ltd
Priority date: 2012-05-30
Filing date: 2012-05-30
Publication date: 2013-03-13
Anticipated expiration: 2022-05-30

Abstract

The utility model relates to a decompression valve characterized by comprising a valve base, a valve body, and a sealing disc made of flexible materials, wherein a concave cavity is arranged in the valve base, the bottom of the valve base is provided with a water outlet channel and a decompression channel, an upper boss is arranged in the center of the bottom of the concave cavity, the valve body is fixed in the concave cavity, a water inlet channel is arranged on the upper portion of the valve body, the bottom of the valve body is provided with a concave part, the inner wall of the concave part is provided with a plurality of notches communicated with the periphery of the valve body, the center of the concave part is provided with a lower boss, the sealing disc is arranged in the concave cavity and under the valve body, a gap is formed between the periphery of the sealing disc and the inner wall of the concave cavity, a plurality of elastic parts protruding downward are arranged at the bottom of the sealing disc, and the lower end of each elastic part is supported at the bottom of the concave cavity. By means of the structure, the decompression valve can achieve decompression and shunting functions of an electromagnetic valve and the cost of the decompression valve is lower than that of the electromagnetic valve. Besides, by means of the deformation ability of the sealing disc, the decompression valve has the function of blocking and unblocking of an inlet of the decompression channel. Springs are not needed, and drinks are prevented from being polluted due to the fact that the springs are rusted.

Description

A kind of relief valve

Technical field

The utility model relates to a kind of relief valve that is particularly suitable for coffee machine.

Background technology

Coffee machine is a kind of beverage extraction plant, the parts that comprise all right one way or the other mutual movement, two parts close up the brewing cavity of rear formation relative closure, when brewageing coffee pads is placed in the brewing cavity, water is got in the heater by water pump and is heated, hot water is by being positioned at the coffee pads of brewing cavity, the powder in the coffee pads extracted brew, and the beverage after the extraction flows out for the people from the delivery port of brewing cavity.

Because in extraction process, there is larger pressure in the brewing cavity, after coffee brewing is complete, must in time the high pressure in the brewing cavity be released, the relief valve of the pressure release of whole brewing system was magnetic valve after the English coffee brewing that uses in the coffee machine was at present finished, as everyone knows, magnetic valve is expensive, therefore so that the complete machine cost of coffee machine improves, loses market competition advantage.Although mechanical pressure-relief valve structure is also also arranged on the market, and it is not suitable for coffee machine, and existing machinery formula relief valve is equipped with spring, and spring easily gets rusty, and causes polluting coffee beverage.

The utility model content

Technical problem to be solved in the utility model is the mechanical type pressure-relief valve structure that a kind of novel structure is provided for above-mentioned prior art present situation, and this relief valve has equally the effect of magnetic valve pressure release but it is with low cost.

The utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of relief valve, it is characterized in that: comprise valve seat, has cavity in the valve seat, the bottom of valve seat is provided with exhalant canal and the pressure release passage that communicates with described cavity, the center position of described cavity bottom surface has upwardly extending convex platform, and described pressure release passage runs through convex platform; Valve body, be fixed in the described cavity, be provided with the sealing ring sealing between the periphery of valve body and the inwall of cavity, the top of valve body is provided with the intake tunnel that communicates with cavity, the bottom of valve body has recess, have the breach of the external side face of a plurality of communicating valves on the internal perisporium of described recess, the center of recess has the lower convex platform to downward-extension, and described intake tunnel runs through this lower convex platform; The seal disc made from flexible material, place in the cavity and between below the valve body, be formed with the gap between the periphery of seal disc and the internal perisporium of cavity, the seal disc bottom surface has a plurality of elastic portion to lower convexity, the lower end of each elastic portion is supported on the bottom surface of cavity, elastic portion guarantees that seal disc separates all the time with the import of exhalant canal, under normal condition, described elastic portion makes the bottom surface of seal disc separate with the import department of pressure release passage, under intake tunnel water flowing state, hydraulic pressure forces seal disc center position distortion to be sunk and with the import shutoff of pressure release passage.

The center position of above-mentioned seal disc bottom surface has the protuberance to lower convexity, and under the state that the distortion of seal disc center position is sunk, described protuberance is with the import shutoff of pressure release passage.Protuberance is set guarantees better that seal disc is with the import shutoff of pressure release passage under state is sunk in the distortion of seal disc center position.

Do not lose good elastic force for elastic portion being supported more stably to seal disc, having, above-mentioned elastic portion arranged along the circle spacing.

For elastic portion is supported more stably to seal disc, above-mentioned elastic portion has ten, wherein five elastic portion are cylindric, and other five elastic portion are be disposed radially rectangular-shaped, and described columned elastic portion and rectangular-shaped elastic portion are intervally installed.It has the good advantage of elastic effect columned elastic portion, and rectangular-shaped elastic portion then has the good advantage of support, and columned elastic portion and rectangular-shaped elastic portion interval are arranged, and makes

Above-mentioned valve body is fixed in the cavity by the location inserted block, the location inserted block has the cutting of a plurality of forward extensions and horizontal interval setting, have the jack of the described cutting inserting of a plurality of confessions on the described valve body, described cutting is inserted from cavity one side outer wall and is passed that the opposite side outer wall from cavity passes behind the described jack.

Compared with prior art, the utility model has the advantage of: during normal operation, hot water passes through intake tunnel, because the effect of hydraulic pressure forces the distortion of seal disc center position to be sunk and with the import shutoff of pressure release passage, current can only be successively behind the gap between the internal perisporium of periphery by the breach on the recess internal perisporium of valve body below, seal disc and cavity like this, discharges via the exhalant canal on the valve seat again; During pressure release, the no longer logical hot water of water purification passage, seal disc can reset under the effect of elastic portion of self, the import of pressure release passage is opened, relief valve is discharged water unnecessary in brewing system and the pipeline and pressure via pressure release passage, realize pressure release, this valve arrangement not only can be realized magnetic valve pressure release diverter function, and cost is far below magnetic valve; The other deformability by seal disc self realizes whether blocking the function of the import of pressure release passage, need not spring, avoids spring to get rusty and pollutes beverage.

Description of drawings

Fig. 1 is the perspective view one of the utility model embodiment;

Fig. 2 is the perspective view two of the utility model embodiment;

Fig. 3 is the three-dimensional cutaway view of the utility model embodiment;

Fig. 4 is the three-dimensional exploded view of the utility model embodiment;

Fig. 5 is the perspective view of valve body among the utility model embodiment;

Fig. 6 is the perspective view of valve seat among the utility model embodiment;

Fig. 7 is the perspective view of seal disc among the utility model embodiment.

The specific embodiment

Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.

Shown in Fig. 1～7, be a preferred embodiment of the present utility model.

A kind of relief valve comprises

Valve seat 1, have cavity 11 in the valve seat 1, the cross section of cavity 11 is rounded, and the bottom of valve seat 1 is provided with exhalant canal 8 and the pressure release passage 3 that communicates with described cavity 11, the center position of cavity 11 bottom surfaces has upwardly extending convex platform 12, and pressure release passage 3 runs through convex platform 12.

Valve body 2, be fixed in the cavity 11 by location inserted block 7, location inserted block 7 has the cutting 71 of a plurality of forward extensions and horizontal interval setting, have a plurality of jacks 24 for cutting 71 insertings on the valve body 2, cutting 71 is passed jack 24 rear opposite side outer walls from cavity 11 from the insertion of cavity 11 1 side outer walls and is passed.Be provided with sealing ring 4 sealings between the inwall of the periphery of valve body 2 and cavity 11, sealing ring 4 is embedded in the cannelure 25 of valve body 2 periphery walls, the top of valve body 2 is provided with the intake tunnel 5 that communicates with cavity 11, the bottom of valve body 2 has recess 21, have the breach 22 of the external side face of a plurality of communicating valves on the internal perisporium of recess 21, the center of recess 21 has the lower convex platform 23 to downward-extension, and intake tunnel 5 runs through this lower convex platform 23.

The seal disc 6 made from flexible material, seal disc 6 is in the form of annular discs, seal disc 6 places in the cavity 11 and between below the valve body 2, be formed with gap X between the internal perisporium of the periphery of seal disc 6 and cavity 11, seal disc 6 bottom surfaces have a plurality of elastic portion 61 to lower convexity, the lower end of each elastic portion 61 is supported on the bottom surface of cavity 11, the center position of seal disc 6 bottom surfaces has the protuberance 62 to lower convexity, elastic portion 61 has ten peripheries that arrange and be distributed in protuberance 62 along the circle spacing, wherein five elastic portion 61 are cylindric, other five elastic portion 61 are be disposed radially rectangular-shaped, and columned elastic portion 61 and rectangular-shaped elastic portion 61 are intervally installed.Elastic portion 61 guarantees that seal disc 6 separates all the time with the import of exhalant canal 8, under normal condition, elastic portion 61 makes the bottom surface of seal disc 6 separate with the import department of pressure release passage 3, under intake tunnel 5 water flowing states, hydraulic pressure forces the distortion of seal disc 6 center positions to be sunk and with the import shutoff of protuberance 62 pressure release passages 3.

Below this relief valve is used for setting forth as an example on the coffee machine operation principle of relief valve.

The delivery port of intake tunnel 5 with the heating boiler of coffee machine is communicated with, and exhalant canal 8 is communicated with the extraction chamber of coffee machine by one-way valve structures, and pressure release passage 3 then is communicated with water tank or the dustbin of coffee machine.

When normally making coffee work, hot water through the heating boiler heating passes through intake tunnel 5, owing to forcing the distortion of seal disc 6 center positions to be sunk, the effect of hydraulic pressure make protuberance 62 with the import shutoff of pressure release passage 3, hot water can only be successively behind the gap X between the internal perisporium of periphery by the breach 22 on recess 21 internal perisporiums of valve body 2 belows, seal disc 6 and cavity 11 like this, discharge via the exhalant canal 8 on the valve seat 1 again, the hot water of discharging backs down and is positioned at the coffee pads that the check valve behind the exhalant canal 8 enters the extraction chamber, carry out the extraction of coffee, the process of making coffee is finished.

After stopping to make coffee, need pressure release, intake tunnel 5 stops supplying hot water, seal disc 6 effect lower seal dish 6 center positions of the elastic portion 61 of self upwards distortion reset, the import of pressure release passage 3 is opened, unnecessary water and pressure behind the gap X between the internal perisporium of the periphery by the breach 22 on recess 21 internal perisporiums of valve body below, seal disc 6 and cavity 11, enter in water tank or the dustbin realization pressure release finally by being discharged by pressure release passage 3 successively in brewing system and the pipeline.

Claims

1. a relief valve is characterized in that: comprise

Valve seat (1), has cavity (11) in the valve seat (1), the bottom of valve seat (1) is provided with exhalant canal (8) and the pressure release passage (3) that communicates with described cavity (11), the center position of described cavity (11) bottom surface has upwardly extending convex platform (12), and described pressure release passage (3) runs through convex platform (12);

Valve body (2), be fixed in the described cavity (11), be provided with sealing ring (4) sealing between the inwall of the periphery of valve body (2) and cavity (11), the top of valve body (2) is provided with the intake tunnel (5) that communicates with cavity (11), the bottom of valve body (2) has recess (21), have the breach (22) of the external side face of a plurality of communicating valves on the internal perisporium of described recess (21), the center of recess (21) has the lower convex platform (23) to downward-extension, and described intake tunnel (5) runs through this lower convex platform (23);

The seal disc (6) made from flexible material, place in the cavity (11) and be positioned between the below of valve body (2), be formed with gap (X) between the internal perisporium of the periphery of seal disc (6) and cavity (11), seal disc (6) bottom surface has a plurality of elastic portion to lower convexity (61), the lower end of each elastic portion (61) is supported on the bottom surface of cavity (11), elastic portion (61) guarantees that seal disc (6) separates all the time with the import of exhalant canal (8), under normal condition, described elastic portion (61) makes the bottom surface of seal disc (6) separate with the import department of pressure release passage (3), under intake tunnel (5) water flowing state, hydraulic pressure forces seal disc (6) center position distortion to be sunk and with the import shutoff of pressure release passage (3).

2. relief valve according to claim 1, it is characterized in that: the center position of described seal disc (6) bottom surface has the protuberance (62) to lower convexity, under the state that the distortion of seal disc (6) center position is sunk, described protuberance (62) is with the import shutoff of pressure release passage (3).

3. relief valve according to claim 1, it is characterized in that: described elastic portion (61) arranged along the circle spacing.

4. relief valve according to claim 3, it is characterized in that: described elastic portion (61) has ten, wherein five elastic portion (61) are cylindric, other five elastic portion (61) are be disposed radially rectangular-shaped, and described columned elastic portion (61) and rectangular-shaped elastic portion (61) are intervally installed.

5. relief valve according to claim 1, it is characterized in that: described valve body (2) is fixed in the cavity (11) by location inserted block (7), location inserted block (7) has the cutting (71) of a plurality of forward extensions and horizontal interval setting, have the jack (24) of the described cutting inserting of a plurality of confessions on the described valve body (2), described cutting (71) is passed the rear opposite side outer wall from cavity (11) of described jack (24) from the insertion of cavity (11) one side outer walls and is passed.