CN2856632Y - Pushing block structure for valves - Google Patents

Abstract

This utility model provides a pushing block structure for valves. A metal film and a press block are provided above the antileak pad in the valve body. A pushing block for pressing is provided on the metal film. The pushing block action is controlled by a center shaft. Wherein a resilient element is arranged in the pushing block base of the pushing block. An action element which protrudes the pushing block base and shifts vertically to compress the resilient element is arranged below the resilient element. Thus, when the pushing block presses the metal film towards the antileak pad, the action element of the pushing block is pressed by a reacting force from the antileak pad to apply an upward pressure onto the resilient element for buffering by which elasticity fatigue of the metal film and antileak pad can be prevented. Furthermore, after external force is removed, the predetermined height recovery can be ensured so as to enlarge service life and ensure antileak utilition effect.

Description

A kind of pushing block structure that is applied to the valve tool

Technical field

The utility model relates to a kind of pushing block structure that is applied to the valve tool, refer in particular to a kind of buffer function that has, can avoid metal diaphragm and prevent that letting out seat cushion is subjected to excessive roof pressure and plastic deformation, and guarantee that it can reply preset height, to increase working life and to guarantee the anti-pushing block structure that is applied to the valve tool of letting out.

Background technique

Now, photoelectricity science and technology, pharmacy or give birth to industry such as skill are with the flowing of valve tool control valve inner fluid, and by the fluid that uses in industry partly tool toxicity or corrosivity are arranged, for the fluid in avoiding managing leaks human body or environment are damaged, so quite high preventing letting out requirement at the valve tool; See also shown in Figure 1, this valve tool is to be provided with inlet channel 2 and outlet channel 3 in the both sides of valve body 1, and end face be provided with one with go into, outlet passage 2,3 communicate hold groove 4, this bottom surface of holding groove 4 is concaved with circular groove 5 for inserting an anti-seat cushion 6 of letting out at inlet channel 2 places, and convex with a ring seat 7 for putting a metal diaphragm 8 at nearly cell wall place, utilize a briquetting 9 to be compressed on metal diaphragm 8 circumferential surfaces and assembling location again, one pushing block 10 is provided in a side of the top of metal diaphragm 8, and by an axis 11 control actions, one central axis seat 12 is the tops that are pressed against briquetting 9, and in axis 11 is screwed on, and make the one end protrude out outside for driving, again with a location swivel nut 13 with central axis seat 12 and valve body 1 assembling location; Therefore, the valve tool by not pressing down metal diaphragm 8 at axis 11 and pushing block 10, can make metal diaphragm 8 and the anti-seat cushion 6 of letting out keep a suitable space when opening state, for the interior fluid flow of valve body 1 inlet channel 2 to outlet passage 3; See also shown in Figure 2, otherwise, when the cut-off valve tool, can drive axis 11 and move down with pushing tow pushing block 10, make pushing block 10 roof pressure metal diaphragms 8, make metal diaphragm 8 let out seat cushion 6 and fits mutually with anti-, seal and add in order to inlet channel 2 in case let out with valve body 1; That is, this metal diaphragm and anti-only let out between seat cushion must the one slight laminate pressure that compresses can prevent that the molecule of fluid from passing through, and sealing inlet channel 2 is for fluid flows; See also shown in Figure 3, but in use, this axis 11 is often easily excessive because of user's the application of force, and pushing tow pushing block 10 is done bigger decline displacement, not only helpless sealing at inlet channel 2, and easily cause metal diaphragm 8 excessive pressure to be combined in anti-letting out on the seat cushion 6, cause the generation elastic fatique, easily plastic deformation and can't reply preset height under permanent the use, so that reduce working life, the more important thing is next time when metal diaphragm 8 pressurizeds are to predeterminated position, and can't fit mutually and can produce the gap with the anti-seat cushion 6 of letting out, cause the anti-not good disappearance of letting out, anti-in addition assembling of letting out seat cushion 6 is to be plugged on earlier in the circular groove of valve body 15, and is with the biside plate clamping location of circular groove 5, comparatively complicated in assembling again, if clamping is not good, then easily cause the anti-shortcoming that seat cushion 6 comes off of letting out.

Summary of the invention

In order to overcome deficiency of the prior art, the purpose of this utility model provides a kind of pushing block structure that is applied to the valve tool, the anti-seat cushion top of letting out in this valve body is provided with metal diaphragm and briquetting, and on metal diaphragm, be provided with a pushing block that compresses, this pushing block is by the axis control action, wherein, inserts an elastic component in the block pushing seat of this pushing block, the below of elastic component then is provided with one and protrudes out block pushing seat, but and the action piece of upper and lower displacement and pressure elasticity assembly; Thus; when axis is done bigger decline displacement because of the excessive pushing tow pushing block of user's application of force; the action piece of this pushing block promptly is subjected to the anti-reaction force pushing tow of letting out seat cushion after roof pressure extremely prevents letting out seat cushion, and the pressure elasticity assembly that makes progress; to form a buffer function; can avoid metal diaphragm to reach and prevent letting out the seat cushion elastic fatique, and make it after external force is removed, can guarantee to reply preset height; fit tightly mutually for doing one next time, reach the utilization benefit that increases the service life and guarantee to prevent to let out.

A time purpose of the present utility model is to be that two side that this valve body fastens circular groove is and anti-ly lets out seat cushion and have a vertical parallax, when metal diaphragm is compressed by pushing block and fits when contacting with two sidewalls and the anti-seat cushion of letting out, promptly form multi-sealed blocking, reach the anti-utilization benefit of letting out of poppet valve tool.

Another purpose of the present utility model is that the bottom surface that is this briquetting is provided with circular groove, prevents letting out anchor ring in order to do forming with the both sides at circular groove, and in several anti-multi-sealed mode of letting out anchor ring, reaches the anti-utilization benefit of letting out of poppet valve tool.

Another purpose of the present utility model is to be that the groove bottom of holding of this valve body is the fastening circular groove that is provided with the tool snap action, can make the anti-seat cushion of letting out reach easy utilization benefit in assembling and certain clip location for anti-overhead kick portion hook location of letting out seat cushion.

The technical solution adopted in the utility model is: a kind of pushing block structure that is applied to the valve tool, be provided with the anti-seat cushion of letting out in this valve body, and anti-let out seat cushion above be provided with diaphragm and compress the briquetting of diaphragm outer periphery, the top of this diaphragm then is provided with the pushing block that can pass, it is characterized in that: be to insert elastic component in this pushing block, the below of elastic component then is provided with an action piece, and action piece one end protrudes out and compresses diaphragm.

Described diaphragm is to be metal diaphragm.

Described pushing block one end is connected with axis.

Described elastic component is a spring or dish-like shell fragment.

Described elastic component is located in the block pushing seat of pushing block, and at one end compresses action piece.

Described briquetting top is to compress with central axis seat and location swivel nut locking, and then compresses the outer periphery of positioning film.

Described briquetting is provided with circular groove in the bottom surface, can make the both sides of circular groove form the anti-anchor ring of letting out, and prevent that with several letting out anchor ring does multiple sealing when compress the diaphragm outer periphery.

Be to offer the fastening circular groove in the described valve body, fasten with anti-overhead kick portion of letting out seat cushion.

The fastening circular groove two side of described valve body has a vertical parallax, when diaphragm is fitted, with the two side and anti-let out seat cushion and form a multi-sealed configuration.

Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be: to increase the service life, guarantee anti-letting out.

Description of drawings

Fig. 1 is the opening state schematic representation of conventional valve tool;

Fig. 2 is the closed condition schematic representation of conventional valve tool;

Fig. 3 is the anti-schematic representation of letting out seat cushion of the excessive roof pressure of traditional pushing block;

Fig. 4 is a parts explosion of the present utility model;

Fig. 5 is an assembling schematic representation of the present utility model;

Fig. 6 is the local enlarged diagram of Fig. 5;

Fig. 7 is the closed condition schematic representation of the utility model valve tool;

Fig. 8 is the local enlarged diagram of the utility model Fig. 7;

Fig. 9 is the opening state schematic representation of the utility model valve tool.

Description of reference numerals: valve body 1; Inlet channel 2; Outlet passage 3; Hold groove 4; Circular groove 5; The anti-seat cushion 6 of letting out; Ring seat 7; Metal diaphragm 8; Briquetting 9; Pushing block 10; Axis 11; Central axis seat 12; Location swivel nut 13; Valve body 20; Inlet channel 21; Outlet passage 22; Hold groove 23; Fasten circular groove 24; Sidewall 241,242; Bearing 25; The anti-seat cushion 30 of letting out; Overhead kick portion 31; Metal diaphragm 40; Arc guide part 41; Briquetting 50; Perforation 51; Circular groove 52; Pushing block 60; Block pushing seat 61; Elastic component 62; Action piece 63; Axis 70; Central axis seat 80; Location swivel nut 90.

Embodiment

See also Fig. 4～shown in Figure 6, the both sides of this valve body 20 are provided with inlet channel 21 and outlet channel 22, and end face be provided with one with go into, outlet passage 21,22 communicate hold groove 23, this bottom surface of holding groove 23 is to be provided with one to fasten circular groove 24 at inlet channel 21 places, and fastening the both sides formation sidewall 241 of circular groove 24,242, the nearly cell wall place, bottom surface of holding groove 23 then convexes with bearing 25, one has the anti-seat cushion 30 of letting out of overhead kick portion 31, be to be embedded in the fastening circular groove 24 of valve body 20 and to fasten mutually with overhead kick portion 31, make the anti-seat cushion 30 of letting out easily in assembling and clip location, and make its end face and two sidewalls 241 that fasten circular groove 24,242 form a height potential difference, be concaved with the metal diaphragm 40 of arc guide part 41 in the middle of one, be provided in a side of on the bearing 25 of valve body 20, the briquetting 50 of one tool perforation 51, be to be provided with circular groove 52 in the bottom surface, and be pressed against on the outboard peripheries of metal diaphragm 40, one pushing block 60 is to have the block pushing seat of being made up of two lids 61, and in block pushing seat 61, insert an elastic component 62 for spring or dish-shaped shell fragment, but the below of this elastic component 62 is provided with a upper and lower displacement and the action piece 63 of pressure elasticity assembly 62 again, and the other end of action piece 63 and the block pushing seat 61 that stretches through out, and overhead is on metal diaphragm 40, one is located at the central axis seat 80 of briquetting 50 tops, be in being screwed on for axis 70, one end of axis 70 is to protrude out the end to withstand on pushing block 60, the other end then protrudes out externally for driving, then again with a location swivel nut 90 with central axis seat 80 and valve body 20 assembling location.

See also Fig. 7, shown in Figure 8, when the cut-off valve tool, when the action piece 63 of axis 70 because of the excessive pushing tow pushing block 60 of user's application of force, compress metal diaphragm 40 and it is posted when preventing letting out on the seat cushion 30 with bigger strength decline, action piece 63 promptly is subjected to the reaction force pushing tow, and to top offset and pressure spring 62, compress metal diaphragm 40 and anti-strength of letting out seat cushion 30 with attenuating, and form a buffer function, can prevent that not only metal diaphragm 40 and the anti-seat cushion 30 of letting out from producing elastic fatique, and can make metal diaphragm 40 and the anti-seat cushion 30 applying sealing inlet channel 21 mutually of letting out, reach the purpose of closing, again by circular groove 24 two sides 241 at valve body 20,242 with the anti-seat cushion 30 of letting out be to be vertical parallax design, in the time of can making metal diaphragm 40 fit, with two side 241,242 reach the anti-seat cushion 30 of letting out forms a multi-sealed configuration, with lift-off seal, and then really inlet channel 21 is sealed to reach and prevents letting out.

See also Fig. 6, shown in Figure 9, when the open valve tool, can drive axis 70 risings and pushing block 60 is upwards resetted, and disengaging compresses metal diaphragm 40, metal diaphragm 40 reaches prevents that letting out seat cushion 30 can reply preset height rapidly, fit tightly mutually for doing one next time, and then this metal diaphragm 40 and anti-let out 30 of seat cushions promptly have a suitable space for the fluid inflow in valve body 20 inlet channeles 21 in holding groove 23, and utilize the arc guide part 41 of metal diaphragm 40 effectively to guide, and smooth and easy being guided in the outlet passage 22, the bottom surface of this briquetting 50 is provided with circular groove 52 again, can make the both sides of circular groove 52 form the anti-anchor ring of letting out, and, reach the anti-utilization benefit of letting out of poppet valve tool in several anti-multi-sealed mode of letting out anchor ring.

In sum, only be preferred embodiment of the present utility model, when can not with the scope implemented of qualification the present invention.Promptly the equalization of being done according to the utility model claim generally changes and modifies, and all should still belong in the scope that patent of the present invention contains.

Claims (9)

1. pushing block structure that is applied to the valve tool, be provided with the anti-seat cushion of letting out in this valve body, and anti-let out seat cushion above be provided with diaphragm and compress the briquetting of diaphragm outer periphery, the top of this diaphragm then is provided with the pushing block that can pass, it is characterized in that: be to insert elastic component in this pushing block, the below of elastic component then is provided with an action piece, and action piece one end protrudes out and compresses diaphragm.

2. the pushing block structure that is applied to the valve tool according to claim 1 is characterized in that: described diaphragm is a metal diaphragm.

3. the pushing block structure that is applied to the valve tool according to claim 1 is characterized in that: described pushing block one end is connected with axis.

4. the pushing block structure that is applied to the valve tool according to claim 1 is characterized in that: described elastic component is a spring or dish-like shell fragment.

5. the pushing block structure that is applied to the valve tool according to claim 1, it is characterized in that: described elastic component is located in the block pushing seat of pushing block, and at one end compresses action piece.

6. the pushing block structure that is applied to the valve tool according to claim 1 is characterized in that: described briquetting top is to compress with central axis seat and location swivel nut locking, and then compresses the outer periphery of positioning film.

7. the pushing block structure that is applied to the valve tool according to claim 1, it is characterized in that: described briquetting is provided with circular groove in the bottom surface, can make the both sides of circular groove form the anti-anchor ring of letting out, and prevent that with several letting out anchor ring does multiple sealing when compress the diaphragm outer periphery.

8. the pushing block structure that is applied to the valve tool according to claim 1 is characterized in that: be to offer the fastening circular groove in the described valve body, fasten with anti-overhead kick portion of letting out seat cushion.

9. the pushing block structure that is applied to the valve tool according to claim 8 is characterized in that: the fastening circular groove two side of described valve body has a vertical parallax, when diaphragm is fitted, with the two side and anti-let out seat cushion and form a multi-sealed configuration.

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