CN1098983C

CN1098983C - Durable leakproof mixed stop valve

Info

Publication number: CN1098983C
Application number: CN99113566A
Authority: CN
Inventors: 陈西火
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-25
Filing date: 1999-03-25
Publication date: 2003-01-15
Anticipated expiration: 2019-03-25
Also published as: CN1232932A

Abstract

The present invention relates to an anti-leakage durable mixing stop valve. A valve body (6) comprises two fluid inlets (61) and a fluid outlet (62), a valve rod (4) and a valve seat (72) are arranged in the valve body (6). and the valve rod (4) comprises a valve core position (41) and a piston position (8), wherein the valve core position (41) serving as a cut-off element and the valve seat (72) matched with the valve core position (41) are arranged on the fluid outlet, whereas, the piston position (8) is arranged on the fluid inlet and presents a hollow cylinder tubular shape. Moreover, the side wall is provided with a hole (82). If applied to a water tap, the present invention can conveniently adjust the water flow and realize the mixing regulation on the cold water and the hot water only by one hand wheel just like a valve with a ceramic valve core.

Description

A kind of durable leakproof mixed stop valve

Technical field

The present invention relates to a kind of stop valve structure, particularly a kind of durable leakproof mixed stop valve.

Background technique

Proposition of the present invention comes from hot and cold water combustion taps used in the daily life, existing hot and cold water combustion taps roughly has two big classes: a class is that cold water, hot water respectively adopt a stop valve, mix mutually at water outlet, sealability is better relatively, water-outlet quantity is big, low cost of manufacture, durable leakproof comparatively speaking, but use very inconvenient; The another kind of ceramic valve core valve that belongs to, adopt the plane hydrodynamic reciprocating sealing, only just can realize that with a handle water yield is regulated and hot and cold water mixes adjusting, easy to use, but owing to its water-outlet quantity of structural reason is little, in case there is foreign matter to block, be easy to damage ceramic valve core, thereby cause seepage, and the ceramic valve core manufacture cost is higher, thereby holds at high price.The patent No. is that 89204312.1 Chinese utility model patent " hot and cold water heat control valve " then discloses handle of a kind of usefulness and just can realize that the water yield is regulated and hot and cold water mixes the stop valve of regulating, it is by valve body, at the bottom of the valve, spool, handle, valve gap and Sealing are formed, be distributed in cold on the different heights having on the valve body, the hot water mouth and the mixing mouth of a river, having at the middle part of spool can be with cold, hot water mouth and the annular intake chamber and the hole of mixing mouth of a river connection, drive the spool rotation by handle with sleeve, change annular intake chamber and hole and cold water hole on the spool, the hot water hole, connected relation between the water space, can valve be in out, close state, and emit cold water respectively, the warm water of hot water and different hot and cold water ratios, thus can reach the purpose that adjusts coolant-temperature gage.Yet, in this design proposal, the sealing of valve when closing is to realize by the plane sealing between at the bottom of rubber seal Sealing that is fixed on the spool lower end and the valve, its sealing contact surface is big, active force (specific pressure) on unit area under the same active force effect is less, sealability is affected, and also damages because of there being hard material to be stuck on the sealing surface in the fluid easily, and service time one, length also can be leaked.

Summary of the invention

Purpose of the present invention provides the durable leakproof mixed stop valve that a kind of seal pressure is big, impurity is difficult for being stuck in sealing part with regard to being at above-mentioned prior art present situation.

Design proposal of the present invention is: durable leakproof mixed stop valve comprises handwheel, valve gap, valve body, valve body includes two fluid inlets, a fluid output, in valve body, be provided with valve rod and valve seat, the valve rod top links to each other with handwheel, include spool position and piston region on the valve rod, wherein be arranged on fluid outlet as the spool position of cut off member and the valve seat that is mated, piston region then is arranged on the fluid inlet place, be the hollow circuit cylinder tubular, and sidewall has a hole, it is characterized in that described spool is being the conical surface with the valve seat contacting point, is conical surface seal between the two.

For strengthening the durable leakproof performance, can in spool and valve seat, have at least a lining that the flexible sealing lining of being made by sealing material is arranged;

For making sealing effect good, the piston region that is preferably in the corresponding valve rod of valve body is provided with piston sleeve, with the stationary fit of body cavity wall, with piston movingly, and have the water port in the fluid inlet position of valve body relatively; Make for convenience simultaneously and consider that this piston sleeve and described valve seat can be parts, respectively the spool position and the piston region of corresponding described valve rod; For reducing friction and better sealing effect arranged, can add the piston bushing that cover one is made by flexible sealing material at the outer wall of the piston region of valve rod;

In order to prevent that the rigid impurity in the flowing medium is deposited in the piston sleeve bottom, the water port of described piston side wall is the best with relative piston medial axis radial disbalance.

Compared with prior art, the present invention is mainly improved existing stop valve, if be applied to water tap, can make it then as the ceramic valve core valve that handwheel of a usefulness can realize easily that the water yield is regulated and hot and cold water mixes and regulates, the conical surface seal of spool and valve seat design simultaneously and flexible sealing bushing design have further strengthened the durable leakproof performance, and when opening valve at every turn, spool is suspended in the valve seat top, flowing liquid washes away valve seat and seal spool surface of contact totally fast, not having rigid impurity is stuck on the sealing surface, thereby during throttle down, spool does not contact with valve seat can damage both sealing surfaces, compare with the ceramic valve core valve, the present invention can not damage because of rigid impurity is arranged in the flowing medium, and water-outlet quantity is big.

Description of drawings

Fig. 1 is in the structure cross-sectional schematic of cut-off state for the embodiment of the invention one.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is in the structure cross-sectional schematic of water flowing state for embodiment one.

Fig. 4 is the partial enlarged drawing of Fig. 1.

Fig. 5 is the B-B sectional view of Fig. 4.

Fig. 6 is a structure of piston cross-sectional schematic among Fig. 1.

Fig. 7 is the C-C sectional view of Fig. 6.

Fig. 8 is in the structure cross-sectional schematic of cut-off state for the embodiment of the invention two.

Fig. 9 is the D-D sectional view of Fig. 8.

Figure 10 is in the structure cross-sectional schematic of water flowing state for embodiment two.

Figure 11 is the partial enlarged drawing of Fig. 8.

Figure 12 is the structure cross-sectional schematic (cut-off state) of the embodiment of the invention three.

Embodiment

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

As Fig. 1～Figure 7 shows that embodiment of a hot and cold water combustion taps, comprise handwheel 1 from top to bottom, valve rod 4, gland 2 and filler 3 thereof, valve gap 5, valve body 6, valve body 6 belows have two water intakes 61, and (hot water is advanced on the general left side, cold water is advanced on the right) and a water outlet 62, in valve body 6, be provided with piston sleeve 7 and valve rod 4, piston sleeve 7 is close to valve body 6 center cavity inwalls, and have cold at the sidewall of corresponding two water intakes 61, the hot water inlet hole 71, the convex shoulder of its upper end is valve seat 72, preferably be provided with packing ring 10 between its lower end and the valve body, leak between piston sleeve 7 and the valve body 6 preventing; Valve rod 4 tops link to each other with handwheel 1, valve rod 4 middle parts are protruded and are the spool 41 as cut off member, cooperatively interact with valve seat 72 and be arranged on water outlet 62 places, valve rod 4 end thread connect a hollow circuit cylinder trunk piston 8, be arranged between two water intakes 61, can move up and down and rotatablely move in piston sleeve 7, the sidewall of piston 8 has a hole 82; The lower end surface of piston 8 is one uncovered in the present embodiment, and the upper-end surface then has the center hole 83 that four water ports 81 and are used for and valve stem end is threaded, as Fig. 6, shown in Figure 7;

The water temperature of present embodiment and the adjustment process of the water yield are as follows: when valve was in closed condition, with reference to Fig. 1, Fig. 2, spool 41 was pressed on the valve seat 72 and seals, and piston 8 is in extreme lower position, and its bottom is lower than two water inlets 71 of piston sleeve 7 sidewalls; When valve rod 4 begins to rise from the closed condition rotation, spool 41 is lifted off a seat and 72 is risen, piston 8 also rotates thereupon and rises but its bottom still is lower than two water inlets 71 of piston sleeve 7 sidewalls, thereby rotate to hole 82 on the sidewall when aiming at hot water inlets when piston 8, hot water promptly flows out from water outlet 62 with the gap of valve seat 72 by piston 8 and spool 41, when cooling water inlet is aimed in the hole 82 on rotating to sidewall, cold water promptly flows out from water outlet 62 with the gap of valve seat 72 by piston 8 and spool 41, this hole 82 and the degree of registration of water inlet 71 have then determined the size of water-outlet quantity, and (diameter of the water intake 61 of valve body can be identical with piston sleeve sidewall water inlet 71 as shown in the figure, also can be bigger; When having omitted piston sleeve if technology is permitted, then the degree of registration of hole 82 and water intake 61 has then determined the size of water-outlet quantity); And rise when valve rod 4 continues rotation, when making the bottom of piston 8 exceed the minimum point of two water inlets 71 (for easy to use, can determine when 360 ° of rotations or 720 ° or other integral multiples of 360 ° according to valve flowing channel area size and according to the size of pitch), with reference to Fig. 3, cold water and hot water enter piston 8 simultaneously, if piston side cinclides 82 is aimed at hot water inlets at this moment, then the water partial heat is a little, if piston side cinclides 82 is aimed at cooling water inlet, then water is more colder, if piston side cinclides 82 is placed in the middle, then hot and cold water mixes on year-on-year basis, so can realize the purpose of hot and cold water mixing temperature adjustment, water-outlet quantity also increases along with the rising of valve rod 4 on the other hand, spool 41 rises to highest point, and water-outlet quantity also just reaches maximum value

For easy to use, can mark " water outlet " printed words or pattern on handwheel 1 surface in the position of corresponding piston side cinclides 82; When valve is just opened, what " water outlet " mark of 1 aligning cooling water inlet then came out on the handwheel is cold water, what the aligning hot water inlet then came out is hot water, and hot and cold water comes out together after valve rotates to 720 °, this moment, " water outlet " mark aligning cooling water inlet on handwheel 1 then was to sneak into a small amount of hot water in the cold water, water temperature is lower, and it then is to sneak into a small amount of cold water in the hot water that " water outlet " mark on handwheel 1 is aimed at hot water inlet, and water temperature is higher;

Better for making by sealing effect, described spool 41 can be an inverted round table shape, and

flexible sealing lining

12,11 is set on the surface of spool 41, valve seat 72, as Fig. 1～Figure 4 shows that disclosed plan of establishment of present embodiment: valve base sealing lining 11 is analysed and observe and is " worker " font, firmly it is pressed into valve seat 72 during installation, its groove just matches and fixed limit with the convex shoulder of valve seat 72; 11 of seal spool linings are spool 41 to be pressed into to get final product after heating, and seal spool lining 12 is that lock ring is on spool 41 after cooling;

For making friction and the sealing better that reduces between piston 8 and the piston sleeve 7, can add the piston bushing 9 that cover one is made by flexible sealing material at piston 8 outer walls, it is fixed as one with piston 8 and does to reach up and down with piston 8 relative piston sleeves 7 and rotatablely moves, by the convex shoulder on piston 8 end faces that piston bushing 9 is spacing fixing in the present embodiment, and open four grooves 84 (referring to Fig. 6 at the piston periphery wall, Fig. 7), make piston 8 external diameters be slightly larger than the internal diameter of piston bushing 9 simultaneously, again piston 8 is compressed into after when mounted piston bushing 9 being added thermal expansion, treated that piston bushing 9 cooling contractions promptly are fixed on the piston 8 firmly; Certainly piston bushing 9 also should have the water port in the position of relative piston side wall water port 82.

For the rigid impurity in the anti-sealing is deposited in piston sleeve 7 bottoms, the water port 82 of described piston 8 sidewalls piston 8 medial axis radial disbalances relatively is best, as shown in Figure 5, the water that enters piston 8 inner chambers like this will produce rotation because of entering from eccentric direction, easily rigid impurity be washed away; Enter between piston bushing 9 and the piston sleeve 7 for the rigid impurity in the anti-sealing is deposited in piston 8 upper-end surfaces simultaneously, can make an intilted ramp angle in piston bushing 9 upper-end surfaces, referring to Fig. 4;

When piston 8 is in closed condition and when being in extreme lower position at valve, preferably still leave certain space between its bottom and the valve body 6, referring to Fig. 1, the leeway of downward displacement is arranged when wearing and tearing to some extent when spool 41, valve seat 72 like this, make valve still can continue use;

It is the most slightly larger that hole 71 on described piston sleeve 7 sidewalls cans be compared to the lateral inflow hole 82 of piston 8 most, strengthening both aligning scopes, thus more convenient use;

Seal spool lining 12 in above-mentioned, valve base sealing lining 11, piston bushing 9 can be made by existing various sealing materials, as teflon, perfluoroethylene-propylene, nylon, (polyamide) etc., but test shows, effect with teflon is better, because of it has certain rigidity and compressive strength, and anti-aging, corrosion-resistant, friction factor is extremely low, self-lubricating property is good, and can use for a long time in-100 ℃～200 ℃ scopes; For the wear resistance of reinforced TFE, improve cold flow properties, the strengthening agent that can mix therein is as anti-wear agents such as bronze powder, glass fibres, oiling agent such as graphite, molybdenum disulfide, make composite material, wherein with doping bronze powder best results, because nontoxic thereby be more suitable for being used for water tap.

Be depicted as embodiments of the invention two as Fig. 8～11, it also is a hot and cold water tap, different is with embodiment one, two water intakes 61 at last and water outlet 62 down, correspondingly, spool 41 is arranged on the end of valve rod 4, and is corresponding with water outlet 62, and piston 8 is arranged on the middle part of valve rod 4, and is corresponding with two water intakes 61; Piston 8 upper end closeds, the lower end has the water port, and all the other are all consistent with embodiment, do not describe in detail.

Be embodiments of the invention three as shown in figure 12, be one and be used for the three-way mixing valve that pipe-line system is mixed two kinds of different flowing mediums mutually, compare with embodiment two, except fluid inlet and outlet and extraneous joint because of use occasion different and different, its structure basically identical also is two fluid imports 61 last, fluid output 62 under design proposal; 13 are back of the body cap among the figure.

In sum; spool, the valve seat of structure characteristic of the present invention in valve body reaches and the structure of importing and exporting joint; all can adopt existing various structure as for parts such as handwheel, valve gap, glands; their change does not influence flesh and blood of the present invention, within the scope of claim protection of the present invention yet.

Claims

1. durable leakproof mixed stop valve, comprise handwheel (1), valve gap (5), valve body (6), valve body (6) includes two fluid inlets (61), a fluid output (62), in valve body (6), be provided with valve rod (4) and valve seat (72), valve rod (4) top links to each other with handwheel (1), include spool position (41) and piston region (8) on the valve rod (4), wherein be arranged on fluid outlet as the spool position (41) of cut off member and the valve seat (72) that is mated, piston region (8) then is arranged on the fluid inlet place, be the hollow circuit cylinder tubular, and sidewall has a hole (82), it is characterized in that described spool (41) being the conical surface with valve seat (72) contacting point, is a conical surface seal between the two.

2. durable leakproof mixed stop valve as claimed in claim 1, the fluid inlet (61) that it is characterized in that described valve body are under fluid output (62), and accordingly, described valve rod (4) middle part is spool position (41), and the bottom is piston region (8).

3. durable leakproof mixed stop valve as claimed in claim 1, the fluid inlet (61) that it is characterized in that described valve body are on fluid output (62), and accordingly, described valve rod (4) middle part is piston region (8), and the bottom is spool position (41).

4. as claim 1,2 or 3 described durable leakproof mixed stop valves, it is characterized in that having at least a lining that the flexible sealing lining of being made by sealing material is arranged in described spool (41) and the valve seat (72).

5. durable leakproof mixed stop valve as claimed in claim 4 is characterized in that described flexible sealing lining is doped with wear-resisting, as to lubricate strengthening agent composite material by teflon and makes.

6. as claim 1,2 or 3 described durable leakproof mixed stop valves, it is characterized in that being provided with piston sleeve (7) in the piston region (8) of the corresponding valve rod of valve body (6), with the stationary fit of body cavity wall, with piston (8) movingly, and have through hole (71) in the relative fluid inlet position of valve body.

7. durable leakproof mixed stop valve as claimed in claim 6 is characterized in that described valve seat (72) and piston sleeve (7) are an one-piece element, respectively the spool position (41) and the piston region (8) of corresponding described valve rod.

8. durable leakproof mixed stop valve as claimed in claim 6 is characterized in that the through hole (71) on described piston sleeve (7) sidewall is bigger slightly than the through hole (82) of piston side.

9. as claim 1,2 or 3 described durable leakproof mixed stop valves, the outer wall lining that it is characterized in that the piston region (8) of described valve rod has a piston bushing (9) of being made by flexible sealing material, being fixed as one with piston (8) and doing to reach up and down with the relative piston sleeve of piston (8) (7) rotatablely moves, and also has through hole in the position of piston side wall through hole (82) relatively.

10. durable leakproof mixed stop valve as claimed in claim 9 is characterized in that described piston bushing (9) is doped with wear-resisting, as to lubricate strengthening agent composite material by teflon and makes.

11., it is characterized in that the through hole (82) that piston region (8) sidewall of described valve rod is opened is the eccentric opening of a disalignment as claim 1,2 or 3 described durable leakproof mixed stop valves.