CN102283582B

CN102283582B - Pressure release valve

Info

Publication number: CN102283582B
Application number: CN 201110219780
Authority: CN
Inventors: 景昱东
Original assignee: Ningbo AAA Group Electric Appliance Co Ltd
Current assignee: Ningbo AAA Group Electric Appliance Co Ltd
Priority date: 2011-07-29
Filing date: 2011-07-29
Publication date: 2013-06-12
Anticipated expiration: 2031-07-29
Also published as: CN102283582A

Abstract

The invention relates to a pressure release valve. The pressure release valve is characterized by comprising a valve casing with a channel, a valve seat with a channel, a valve core with a water outlet channel, a valve bush, a first spring, a valve rod for pushing the valve bush to move upward and downward, and a driving locking structure, wherein the side wall of the valve casing is provided with a water inlet; the valve seat is fixed on the lower part of the channel of the valve casing, and the side wall of the valve seat is provided with a connecting channel; the valve bush is positioned in the channel of the valve seat; the first spring is supported between the valve core and the valve bush, the peripheral wall of the upper end of the valve core is in sealing fit with the inner wall of the valve bush in a state of the downward movement of the valve bush, and a gap through which water flow passes is formed between the peripheral wall of the upper end of the valve core and the inner wall of the valve bush in a state of the upward movement of the valve bush; and the driving locking structure is used for driving the valve rod to move upward and downward and keeping the valve rod in a state of pushing the valve bush to move downward. The pressure release valve has a mechanical pressure release structure, the connection and disconnection of the water inlet and the water outlet channel can be controlled only by pushing the valve rod during operation, and the pressure release valve is easy and convenient to operate, has few related components and a simple integral structure, and is low in cost and convenient to assemble.

Description

A kind of relief valve

Technical field

The present invention relates to a kind of relief valve.

Background technology

Coffee machine is after having boiled coffee, the residual water that certain pressure is arranged in brewing cavity and water under high pressure pipeline, be the safety that guarantees that coffee machine is opened, need first the water of certain pressure residual in this brewing cavity first to be laid down, existing coffee machine is to realize by magnetic valve, after coffee-making machine brewing finishes, by programme-control, magnetic valve is opened, laid down the water that this has certain pressure.Because the manufacturing cost of magnetic valve is high, control relative complex, and easily damage, therefore virtually increased the manufacturing cost of coffee machine.

Summary of the invention

Technical problem to be solved by this invention is to provide for above-mentioned prior art present situation that a kind of this relief valve is mechanical structure in order to substitute in coffee machine the relief valve in order to the magnetic valve of pressure release, have cost low, control simple advantage.

The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of relief valve is characterized in that: comprise the valve casing with the passage that axially runs through, the sidewall of valve casing has the water inlet that communicates with described passage; Valve seat with the passage that axially runs through is fixed on the bottom of the passage of valve casing, has the passage that is communicated with valve seat and the interface channel of described water inlet on the sidewall of valve seat; Spool with the exhalant canal that axially runs through and communicate with the external world is fixed on the bottom in valve seat; Valve pocket is positioned at passage and the slippage up and down of valve seat; The first spring, be supported between spool and valve pocket and make valve pocket keep moving trend, under the state that valve pocket moves down, between the Zhou Bineng of spool upper end and the inwall of valve pocket, liquid sealing coordinates, under the state that moves on valve pocket, form the gap that water supply stream passes through between the Zhou Bineng of spool upper end and the inwall of valve pocket; The valve rod that moves up and down in order to promote valve pocket is positioned at the top of the passage of valve casing; Drive locking structure, move up and down in order to drive described valve rod, and valve rod can be remained on the state that valve pocket moves down that promotes.

Above-mentioned driving locking structure comprises the second spring, acts on described valve rod and makes valve rod keep moving trend; Button constrains in the interior also only slippage up and down of passage of valve casing, and button stretches out the upper surface of valve casing; Lower bull stick is located in the passage of valve casing and between button and valve rod, and the upper end of described valve rod is plugged in lower bull stick bottom and can moves down with lower bull stick; Ball pen type spinning location structure, be located between button and lower bull stick, this ball pen type spinning location structure can be converted into rectilinear motion and the circular motion of lower bull stick by the rectilinear motion that button is single, and can under the state that valve rod moves down, lower bull stick be positioned at the middle part of the passage of valve casing.

this drives locking structure with reference to the pressing structure of ball pen, have advantages of easy to operate, only need press a knob down, valve rod is just depressed valve pocket, and make valve pocket be in all the time depressed state, between the Zhou Bineng of spool upper end and the inwall of valve pocket, liquid sealing coordinates, this relief valve cuts out, only need again press button during unlatching, lower bull stick no longer limits valve rod, valve rod moves under the effect of the second spring, valve pocket is owing to there is no holding of valve rod, and move under the elastic force effect of the first spring, form the gap that water supply stream passes through between the Zhou Bineng of spool upper end and the inwall of valve pocket, relief valve is opened.

above-mentioned ball pen type spinning location structure is, the lower surface periphery of button has lower surface tooth down, the upper surface periphery of lower bull stick have up touch with described lower surface toe joint the upper surface tooth coordinate, have the annular protrusion of longitudinally arranging on the inwall of the passage of described valve casing, on the lower surface of this annular protrusion, the interval has a plurality of ring teeth, on annular protrusion, the interval has a plurality of deep trouths, two convex tendons that longitudinally arrange are set on described lower bull stick side face at least, after lower bull stick rotates an angle, described convex tendon can slippage in described deep trouth, after lower bull stick is rotated further an angle, described convex tendon is fastened on the lower surface of described ring tooth, at least have the number projection identical with deep trouth on the side face of button lower end, this projection is positioned at described deep trouth and slippage up and down.

The spinning drives structure that this ball pen type spinning location structure is pen core in ball pen is identical, wherein valve rod is equivalent to the pen core in ball pen, button is equivalent to the upper runner in ball pen, and lower bull stick is equivalent to the lower runner in ball pen, and the passage of valve casing is equivalent to the hole of the upper shaft of a writing brush in ball pen; The concrete structure of certain ball pen type spinning location has a variety of, does not limit to and aforementioned structure.

Above-mentioned deep trouth has four, is uniformly distributed along the circumference, and described convex tendon has four, and described projection has four.Four deep trouths can better be given button and lower bull stick guiding.

The lower end of above-mentioned spool is threaded in valve seat, is provided with the first sealing ring between the inwall of the middle part of spool and the passage of valve seat.This structure is convenient to spool is assembled in valve seat, sealing ring is set between spool and valve seat in addition forms good liquid sealing.

Above-mentioned spool upper periphery mask has male cone (strobilus masculinus), has inner conical surface below the inwall of valve pocket, forms described gap between male cone (strobilus masculinus) and inner conical surface, and the spool upper periphery also is embedded with second sealing ring that can coordinate with the inwall of valve pocket.This structure diminishes the gap gradually in the valve pocket folding process, make the keying of water inlet and exhalant canal that individual transition gradually be arranged, and the second sealing ring is set can forms better liquid sealing effect with valve pocket.

Above-mentioned valve casing is comprised of lower casing and lower casing, and upper casing removably is connected to the top of lower casing, and described water inlet is arranged on lower casing.Valve casing is removably connected by up and down two parts and forms, and is convenient to each parts of assembling in valve casing.

The upper surface of above-mentioned lower casing has along circle spacing setting and upwardly extending three elastic fastening hooks, have three slots that match with described grab on the perisporium of described upper casing, the lower ending opening of slot, the top of slot has the hole clipping that the hook portion with elastic fastening hook matches, described elastic fastening hook is plugged in slot, and the hook portion of elastic fastening hook is fastened in described hole clipping simultaneously.It is easy to assembly that upper casing and lower casing adopt buckle connecting structure to have advantages of, certainly also can adopt to have other removably connected mode now, as adopting thread connecting mode.

Be provided with the 3rd sealing ring between the inwall of the outer peripheral face of above-mentioned valve seat and the passage of valve casing, the lower end of valve seat is stretched out lower casing downwards, the lower end of valve seat be fastened on lower casing by jump ring.

The middle part of above-mentioned valve rod has annular shoulder block, and the lower end abutment of described the second spring is on lower casing, and the upper end of the second spring is resisted against on annular shoulder block.

Compared with prior art, the invention has the advantages that: this relief valve adopts deposits mechanically pressure relief, only need promote valve rod during operation and whether just can control water inlet and exhalant canal conducting, there is no the auxiliary circuit control structure of magnetic valve, simple to operation, and this relief valve to relate to parts few, overall structure is simple, cost is low, easy to assembly.

Description of drawings

Fig. 1 is the perspective view of the embodiment of the present invention;

Fig. 2 is the cutaway view (relief valve opening) of the embodiment of the present invention;

Fig. 3 is the cutaway view (relief valve closed condition) of the embodiment of the present invention;

Fig. 4 is the three-dimensional exploded view of the embodiment of the present invention;

Fig. 5 is the perspective view of upper casing in the embodiment of the present invention.

The specific embodiment

Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.

As shown in Fig. 1～5, be a preferred embodiment of the present invention.

A kind of relief valve comprises

valve casing 1 with the passage 11 that axially runs through, valve casing 1 is comprised of lower casing 13 and lower casing 14, upper casing 13 removably is connected to the top of lower casing 14 by snap connection means, the upper surface that is lower casing 14 has along circle spacing setting and upwardly extending three elastic fastening hooks 15, have three slot 16s that match with grab 15 on the perisporium of upper casing 13, the lower ending opening of slot 16, the top of slot 16 has the hole clipping 161 that the hook portion 151 with elastic fastening hook matches, elastic fastening hook 15 is plugged in slot 16, the hook portion 151 of elastic fastening hook is fastened in hole clipping 161 simultaneously, the sidewall of lower casing 14 has the water inlet 12 that communicates with passage 11.

Valve seat 2 with the passage 21 that axially runs through is fixed on the bottom of the passage 11 of valve casing, has the passage 21 that is communicated with valve seat and the interface channel 22 of water inlet 12 on the sidewall of valve seat 2; Be provided with two the 3rd sealing rings 23 between the inwall of the outer peripheral face of valve seat 2 and the passage of valve casing 11, the lower end of valve seat 2 is stretched out lower casing 13 downwards, the lower end of valve seat 2 be fastened on lower casing 13 by jump ring 10.

Spool 3 with the exhalant canal 31 that axially runs through and communicate with the external world, the lower end of spool 3 are threaded in the bottom in valve seat 2, are provided with the first sealing ring 32 between the inwall of the middle part of spool 3 and the passage of valve seat 21.

Valve pocket 4 with running-on is positioned at passage 21 and the slippage up and down of valve seat, is provided with the 4th sealing ring 42 between the inwall of the periphery wall of valve pocket 4 and the passage of valve seat 21; Spool 3 upper periphery masks have male cone (strobilus masculinus) 33, have inner conical surface 41 below the inwall of valve pocket 4.

The first spring 5, be supported between spool 3 and valve pocket 4 and make valve pocket 4 keep moving trend, under the state that valve pocket 4 moves down, between the Zhou Bineng of spool 3 upper ends and the inwall of valve pocket 4, liquid sealing coordinates, under the state that moves on valve pocket 4, form the gap X that water supply stream passes through between the Zhou Bineng of spool 3 upper ends and the inwall of valve pocket 4, form gap X between male cone (strobilus masculinus) 32 and inner conical surface 41, spool 3 upper periphery also are embedded with second sealing ring 34 that can coordinate with the inwall of valve pocket 4.

The valve rod 6 that moves up and down in order to promote valve pocket 4 is positioned at the top of the passage 11 of valve casing.

Drive locking structure, move up and down in order to drive described valve rod 6, and valve rod 6 can be remained on the state that valve pocket 4 moves down that promotes.

The driving locking structure comprises

The second spring 7 acts on valve rod 6 and makes valve rod 6 keep moving trend, and the middle part of valve rod 6 has the lower end abutment of annular shoulder block 61, the second springs 7 on lower casing 13, and the upper end of the second spring 7 is resisted against on annular shoulder block 61.

Button 8 constrains in the interior also only slippage up and down of passage 11 of valve casing, and button 8 stretches out the upper surface of valve casing 1.

Lower bull stick 9 is located in the passage 11 of valve casing and between button 8 and valve rod 6, and the upper end of valve rod 6 is plugged in lower bull stick 9 bottoms and can moves down with lower bull stick 9.

Ball pen type spinning location structure, be located between button 8 and lower bull stick 9, this ball pen type spinning location structure can the rectilinear motion that button 8 is single be converted into rectilinear motion and the circular motion of lower bull stick 9, and can under the state that valve rod 6 moves down, lower bull stick 9 be positioned at the middle part of the passage 11 of valve casing.

ball pen type spinning location structure is, the lower surface periphery of button 8 has lower surface tooth 81 down, the upper surface periphery of lower bull stick 9 has the upper surface tooth 91 that contacts cooperation with described lower surface tooth 81 up, have the annular protrusion 111 of longitudinally arranging on the inwall of the passage 11 of valve casing, on the lower surface of this annular protrusion 111, the interval has a plurality of ring teeth 112, on annular protrusion 111, the interval has a plurality of deep trouths 113, deep trouth 113 has four, be uniformly distributed along the circumference, four convex tendons 92 that longitudinally arrange are set on lower bull stick 9 side faces, after lower bull stick 9 rotates an angle, convex tendon 92 can be in the interior slippage of deep trouth 113, after lower bull stick 9 is rotated further an angle, convex tendon 92 is fastened on the lower surface of ring tooth 112, have four projections 82 on the lower end side face of button 8, this projection 82 is positioned at deep trouth 113 and slippage up and down.

Operation principle and the process of this relief valve are as follows:

as shown in Figure 4, during locking, press button 8, under button 8 drives, bull stick 9 and valve rod 6 move down along the passage 11 of valve casing 1, because the rib 63 of the projection 82 of button and lower bull stick coordinates with deep trouth 113 in folding process, therefore folding process button 8 and lower bull stick 9 move down for straight line, until the convex tendon 92 of lower bull stick breaks away from the restriction of deep trouth 113, simultaneously in upper surface tooth 91 mating reactions of the lower surface of button tooth 81 with lower bull stick, lower bull stick 9 rotates an angle, convex tendon 92 is fastened on ring tooth 112 lower surfaces, lower bull stick 9 is limited, the valve rod 6 that is positioned at simultaneously lower bull stick 9 belows is also limited, therefore the first spring 5 can not be with on ovable valve stem 6 and move, valve rod 6 is just depressed valve pocket 4, and makes valve pocket 4 be in all the time depressed state, and between the Zhou Bineng of spool 3 upper ends and the inwall of valve pocket 4, liquid sealing coordinates, and this relief valve cuts out, and namely is not communicated with between water inlet 12 and exhalant canal 31.

as shown in Figure 3, only need again press button during unlatching, by upper surface tooth 91 mating reactions at the lower surface of button tooth 81 and lower bull stick, lower bull stick 9 is rotated further an angle, convex tendon 92 just in time turns to deep trouth 113 positions and goes out, hold band ovable valve stem 6 under effect at the first spring 5, lower bull stick 9 and button 8 are along moving on the first longitudinal rod hole 11, lower bull stick 9 no longer limits valve rod 6, valve rod 6 moves under the effect of the second spring 7, valve pocket 4 is owing to there is no holding of valve rod 9, and move under the elastic force effect of the first spring 5, form the gap X that water supply stream passes through between the Zhou Bineng of spool 3 upper ends and the inwall of valve pocket 4, the water that flows into from water inlet 12 is through interface channel 22, gap X is by being flowed out by exhalant canal 31, relief valve is opened.

Claims

1. a relief valve, is characterized in that: comprise

Valve casing (1) with the passage (11) that axially runs through, the sidewall of valve casing (1) have the water inlet (12) that communicates with described passage (11);

Valve seat (2) with the passage (21) that axially runs through, be fixed on the bottom of the passage (11) of valve casing, have the passage (21) of connection valve seat and the interface channel (22) of described water inlet (12) on the sidewall of valve seat (2);

Spool (3) with the exhalant canal (31) that axially runs through and communicate with the external world is fixed on the bottom in valve seat (2);

Valve pocket (4) is positioned at passage (21) and the slippage up and down of valve seat;

The first spring (5), be supported between spool (3) and valve pocket (4) and make valve pocket (4) keep moving trend, under the state that valve pocket (4) moves down, between the Zhou Bineng of spool (3) upper end and the inwall of valve pocket (4), liquid sealing coordinates, under the state that moves on valve pocket (4), form the gap (X) that water supply stream passes through between the Zhou Bineng of spool (3) upper end and the inwall of valve pocket (4);

The valve rod (6) that moves up and down in order to promote valve pocket (4) is positioned at the top of the passage (11) of valve casing;

Drive locking structure, move up and down in order to drive described valve rod (6), and valve rod (6) can be remained on the state that valve pocket (4) moves down that promotes.

2. relief valve according to claim 1, it is characterized in that: described driving locking structure comprises

The second spring (7) acts on described valve rod (6) and makes valve rod (6) keep moving trend;

Button (8) constrains in the interior also only slippage up and down of passage (11) of valve casing, and button (8) stretches out the upper surface of valve casing (1);

Lower bull stick (9) is located in the passage (11) of valve casing and is positioned between button (8) and valve rod (6), and the upper end of described valve rod (6) is plugged in lower bull stick (9) bottom and also can moves down with lower bull stick (9);

Ball pen type spinning location structure, be located between button (8) and lower bull stick (9), this ball pen type spinning location structure can be converted into the single rectilinear motion of button (8) rectilinear motion and the circular motion of lower bull stick (9), and under the state that can move down in valve rod (6), lower bull stick (9) is positioned at the middle part of the passage (11) of valve casing.

3. relief valve according to claim 2, it is characterized in that: described ball pen type spinning location structure is, the lower surface periphery of button (8) has lower surface tooth (81) down, the upper surface periphery of lower bull stick (9) has the upper surface tooth (91) that contacts cooperation with described lower surface tooth (81) up, have the annular protrusion (111) of longitudinally arranging on the inwall of the passage of described valve casing (11), on the lower surface of this annular protrusion (111), the interval has a plurality of ring teeth (112), the upper interval of annular protrusion (111) has a plurality of deep trouths (113), two convex tendons (92) that longitudinally arrange are set on described lower bull stick (9) side face at least, after lower bull stick (9) rotates an angle, described convex tendon (92) can slippage in described deep trouth (113), after lower bull stick (9) is rotated further an angle, described convex tendon (92) is fastened on the lower surface of described ring tooth (112), at least have the number projection (82) identical with deep trouth (113) on the side face of button (8) lower end, this projection (82) is positioned at described deep trouth (113) and slippage up and down.

4. relief valve according to claim 3, it is characterized in that: described deep trouth (113) has four, is uniformly distributed along the circumference, and described convex tendon (92) has four, and described projection (82) has four.

5. relief valve according to claim 1, it is characterized in that: the lower end of described spool (3) is threaded in valve seat (2), is provided with the first sealing ring (32) between the inwall of the passage (21) of the middle part of spool (3) and valve seat.

6. relief valve according to claim 1, it is characterized in that: described spool (3) upper periphery mask has male cone (strobilus masculinus) (33), has inner conical surface (41) below the inwall of valve pocket (4), form described gap (X) between male cone (strobilus masculinus) (33) and inner conical surface (41), spool (3) upper periphery also is embedded with second sealing ring (34) that can coordinate with the inwall of valve pocket (4).

7. arbitrary described relief valve according to claim 2～4, it is characterized in that: described valve casing (1) is comprised of upper casing (13) and lower casing (14), upper casing (13) removably is connected to the top of lower casing (14), and described water inlet (12) is arranged on lower casing (14).

8. relief valve according to claim 7, it is characterized in that: the upper surface of described lower casing (14) has along circle spacing setting and upwardly extending three elastic fastening hooks (15), have three slots (16) that match with described grab (15) on the perisporium of described upper casing (13), the lower ending opening of slot (16), the top of slot (16) has the hole clipping (161) that the hook portion (151) with elastic fastening hook matches, described elastic fastening hook (15) is plugged in slot (16), the hook portion (151) of elastic fastening hook is fastened in described hole clipping (161) simultaneously.

9. relief valve according to claim 7, it is characterized in that: be provided with the 3rd sealing ring (23) between the inwall of the passage (11) of the outer peripheral face of described valve seat (2) and valve casing, the lower end of valve seat (2) is stretched out lower casing (14) downwards, and the lower end of valve seat (2) is fastened on lower casing (14) by jump ring (10).

10. relief valve according to claim 7, it is characterized in that: the middle part of described valve rod (6) has annular shoulder block (61), the lower end abutment of described the second spring (7) is on lower casing (14), and the upper end of the second spring (7) is resisted against on annular shoulder block (61).