CN1307193A - Multifunctional piston valve - Google Patents
Multifunctional piston valve Download PDFInfo
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- CN1307193A CN1307193A CN 00113244 CN00113244A CN1307193A CN 1307193 A CN1307193 A CN 1307193A CN 00113244 CN00113244 CN 00113244 CN 00113244 A CN00113244 A CN 00113244A CN 1307193 A CN1307193 A CN 1307193A
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Abstract
The multifunctional piston valve for pipeline consists of mainly double piston and double-layered valve body and has upper and lower axial ports, inner and outer radial ports, and valve body separated inner cavity communicated via pipe or duct. Through different communication, the valve may be non-return one, float one, level controlling one, relief one, reducing one, etc. It is universal and simple in structure.
Description
The present invention relates to piston valve, is fluid pipe valve, particularly double piston valve.
The existing piston valve has leve autocontrol valve, safety check, check valve, stop valve, buoyancy aid piston valve.Decompression valves, reduction valve.These piston valves are single piston structure.
Existing safety check leaks because factors such as easy fouling of seal for pipe joints mouth and sealed rubber wearing and tearing easily cause, and trimmer valve also must be housed to bear water hammer pressure in the preposition pipeline of safety check referring to accompanying drawing 4.
Existing check valve is referring to accompanying drawing 15, damping spring or rubber must be housed in order to reduce the impact of water hammer that valve produces when the check in its structure, and damping spring or rubber are easily damaged partss, make valve maintenance trouble, and complex structure.
Existing stop valve is referring to accompanying drawing 26, the spool plug is single piston, and the lock of valve body inner carrier stream hermetic unit directly connects and does not separate with lever operated part, piston rod should be gone up, following motion is rotated again, therefore sealing difficulty, seal ring quantity between piston and the valve body is many and cooperates tightly, and seal ring adopts asbestos ring more, and service time is long, incrustation scale participates in the gap between piston and the valve body, increase surface friction drag, so rotatable handle is very painstaking when opening or closing valve, and seal ring is fragile, often need to change, and seal the bad seepage that easily causes, simultaneously, the sealing gasket at piston place is because the rotation friction is also fragile.
Existing buoyancy aid piston valve is referring to accompanying drawing 37, its buoyancy aid piston directly bears pipe network hydraulic pressure, and the lock head piece of piston promptly is the water outlet of valve, therefore piston is stressed big, and it is big that the corresponding volume of buoyancy aid is wanted, and could produce enough buoyancy and make piston action, when big or caliber size is big when pipe network hydraulic pressure, buoyancy aid is big especially, and duty is big, installs and uses to be restricted.
Existing fluid level control valve is referring to accompanying drawing 51, active chamber in its valve body and control chamber are separated system and are adopted rubber membrane to separate or separate with O type rubber sealing ring, so cracky, grind away, and adopted secondary spring, make complex structure, in addition, its connection active chamber is to be communicated with the influent stream chamber of active chamber with the auxilliary pipe and the control valve of control chamber, has therefore limited control valve and can not place away from the main valve place, can not distant control.
Existing pressure-relief valve structure is referring to accompanying drawing 64, and its main valve piston is because of being contained in India rubber diaphragm A
1On, diaphragm A
1Fragile, in addition, its pilot valve B
1Piston rod rubber sealing ring C
1Easy to wear.
Existing reducing valve body structure is referring to accompanying drawing 67, and its main valve piston is packed in India rubber diaphragm A
2On, diaphragm A
2Fragile, simultaneously, its pilot valve B
2Piston rod rubber sealing ring C
2Also easy to wear.
And existing above-mentioned various valves all only have certain single function, as non-return, check, by, liquid level control ... etc. function, its structure difference of the valve of difference in functionality, a valve does not have multiple function concurrently.
The objective of the invention is to overcome the disadvantage of above-mentioned various piston valves, adopt double-piston, simplify, improve structure, make it to be easy to make, and do not have easily damaged parts, do not need frequent maintenance, reliable.
Technical solution of the present invention is a multifunctional piston valve, and it is the multi-functional fluid pipeline valve, mainly is made of valve body and the piston that is loaded in the valve body, and its piston is a double-piston, and by being connected in axially-spaced on the same piston rod, small one and large one two pistons constitute; Valve body is inside and outside double layered tubular, inside and outside layer pipe oppositely outwardly an end be opening, the sealing of the inner tube the other end, the external pipe the other end connects sealing with inner layer tube wall; The horizontal passes through valve body pipe of double-piston, upper and lower piston end surface is corresponding with the upper and lower aperture of inner layer tube wall respectively to coincide, constitute axial upper and lower two locks stream sealed mouth of double-piston, inner cylinder face on big piston circumference side and the valve body outer wall constitutes the identical close mouth of slippage, body cavity is divided into control chamber and active chamber by the identical close mouth of this slippage, active chamber is separated into inner chamber and exocoel by small piston lock stream sealed mouth again, and control chamber connects with active chamber mat communication passage and is communicated with; Big piston radially has inside and outside double-deck lock stream sealed mouth, and internal layer lock stream sealed mouth is coincide by big piston end face and valve body inner layer tube wall aperture and constitutes, and outer lock stream sealed mouth is coincide by the inward flange on big piston end face and the valve body outer wall and constitutes.Multi-functional piston can be piston check valve, piston type check valve, piston type stop valve, piston type stop valve hold concurrently safety check, piston type float valve, piston type liquid level remote automatic control valve, piston type liquid level remote automatic control valve hold concurrently one-way valve, piston type liquid level remote automatic control valve hold concurrently stop valve, piston type Decompression valves, piston reduction valve.
Description of drawings is as follows:
Fig. 1 is multifunctional piston valve basic structure of the present invention (I) schematic representation
Fig. 2 is multifunctional piston valve basic structure of the present invention (II) schematic representation
Fig. 3 is multifunctional piston valve basic structure of the present invention (III) schematic representation
Fig. 4 is a prior art check valve structure schematic representation
Fig. 5, the 6th, the embodiment of the invention 1 piston check valve structural representation
Fig. 7 is the embodiment of the invention 2 piston check valve structural representations
Fig. 8 is the embodiment of the invention 3 piston check valve structural representations
Fig. 9 is the embodiment of the invention 4 piston check valve structural representations
Figure 10 is the embodiment of the invention 5 piston check valve structural representations
Figure 11 is the embodiment of the invention 6 piston check valve structural representations
Figure 12 is the embodiment of the invention 7 piston check valve structural representations
Figure 13 is the embodiment of the invention 8 piston check valve structural representations
Figure 14 is the embodiment of the invention 9 piston check valve structural representations
Figure 15 is a prior art check valve structural representation
Figure 16, the 17th, the embodiment of the invention 10 piston type check valve structural representations
Figure 18 is the embodiment of the invention 11 piston type check valve structural representations
Figure 19 is the embodiment of the invention 12 piston type check valve structural representations
Figure 20 is the embodiment of the invention 13 piston type check valve structural representations
Figure 21 is the embodiment of the invention 14 piston type check valve structural representations
Figure 22 is the embodiment of the invention 15 piston type check valve structural representations
Figure 23 is the embodiment of the invention 16 piston type check valve structural representations
Figure 24 is the embodiment of the invention 17 piston type check valve structural representations
Figure 25 is the embodiment of the invention 18 piston type check valve structural representations
Figure 26 is a prior art stop valve structure schematic representation
Figure 27, the 28th, the embodiment of the invention 19 piston type stop valves or piston type stop valve check valve structure schematic representation of holding concurrently
Figure 29 is the embodiment of the invention 20 piston type stop valves or the piston type stop valve check valve structure schematic representation of holding concurrently
Figure 30 is the embodiment of the invention 21 piston type stop valves or the piston type stop valve check valve structure schematic representation of holding concurrently
Figure 31 is the embodiment of the invention 22 piston type stop valves or the piston type stop valve check valve structure schematic representation of holding concurrently
Figure 32 is the embodiment of the invention 23 piston type stop valves or the piston type stop valve check valve structure schematic representation of holding concurrently
Figure 33 is the embodiment of the invention 24 piston type stop valves or the piston type stop valve check valve structure schematic representation of holding concurrently
Figure 34 is the embodiment of the invention 25 piston type stop valves or the piston type stop valve check valve structure schematic representation of holding concurrently
Figure 35 is the embodiment of the invention 26 piston type stop valves or the piston type stop valve check valve structure schematic representation of holding concurrently
Figure 36 is the embodiment of the invention 27 piston type stop valves or the piston type stop valve check valve structure schematic representation of holding concurrently
Figure 37 is a prior art buoyancy aid piston valve construction schematic representation
Figure 38, the 39th, the embodiment of the invention 28 piston type float valve structural representations
Figure 40 is the embodiment of the invention 29 piston type float valve structural representations
Figure 41 is the embodiment of the invention 30 piston type float valve structural representations
Figure 42 is the embodiment of the invention 31 piston type float valve structural representations
Figure 43 is the embodiment of the invention 32 piston type float valve structural representations
Figure 44 is the embodiment of the invention 33 piston type float valve structural representations
Figure 45 is the embodiment of the invention 34 piston type float valve structural representations
Figure 46 is the embodiment of the invention 35 piston type float valve structural representations
Figure 47 is the embodiment of the invention 36 piston type float valve structural representations
Figure 48 is the embodiment of the invention 37 piston type float valve structural representations
Figure 49 is the embodiment of the invention 38 piston type float valve structural representations
Figure 50 is the embodiment of the invention 39 piston type float valve structural representations
Figure 51 is a prior art fluid level control valve structural representation
Figure 52, the 53rd, the embodiment of the invention 40 liquid level remote automatic control valve arrangement schematic representation
Figure 54 is the embodiment of the invention 41 liquid level remote automatic control valve arrangement schematic representation
Figure 55 is the embodiment of the invention 42 liquid level remote automatic control valve arrangement schematic representation
Figure 56 is the embodiment of the invention 43 liquid level remote automatic control valve arrangement schematic representation
Figure 57 is the embodiment of the invention 44 liquid level remote automatic control valve arrangement schematic representation
Figure 58 is the embodiment of the invention 45 liquid level remote automatic control valve arrangement schematic representation
Figure 59 is the embodiment of the invention 46 liquid level remote automatic control valve arrangement schematic representation
Figure 60 is the embodiment of the invention 47 liquid level remote automatic control valve arrangement schematic representation
Figure 61 is the embodiment of the invention 48 liquid level remote automatic control valve arrangement schematic representation
Figure 62 is the embodiment of the invention 49 liquid level remote automatic control valves one-way valve structures schematic representation of holding concurrently
Figure 63 is the embodiment of the invention 50 liquid level remote automatic control valves stop valve structure schematic representation of holding concurrently
Figure 64 is prior art Decompression valves and pilot valve structural representation thereof
Figure 65 is multifunctional piston valve embodiment 51 piston type pressure-relief valve structure schematic representation of the present invention
Figure 66 is multifunctional piston valve embodiment 52 piston type pressure-relief valve structure schematic representation of the present invention
Figure 67 is prior art reduction valve and pilot valve structural representation thereof
Figure 68 is the multi-functional piston embodiment 53 Piston reducing valve structural representations of the present invention
Figure 69 is multifunctional piston valve of the present invention basic structure (IV) schematic representation of deriving
Figure 70 is the embodiment of the invention 54 piston check valve structural representations
Figure 71 is the embodiment of the invention 55 piston type stop valve structural representations
Figure 72 is the embodiment of the invention 56 piston type stop valves or the piston type stop valve check valve structure schematic representation of holding concurrently
Figure 73 is the embodiment of the invention 57 piston type liquid level remote automatic control valve arrangement schematic representation
Figure 74 is the embodiment of the invention 58 piston check valve structural representations
Figure 75 is the embodiment of the invention 59 piston type check valve structural representations
Figure 76 is that the various valves of elevated tank, water system are installed and used figure
The present invention further specifies as follows in conjunction with specific embodiments referring to accompanying drawing:
Basic structure of the present invention (I) is referring to accompanying drawing 1, and multifunctional piston valve mainly is made of valve body and the piston that is loaded in the valve body, and its piston is to be connected in the double-piston that small one and large one two pistons [1] and [5] of axially-spaced on the same piston rod constitute; Valve body is the tubular structure of inside and outside bilayer, inside and outside layer pipe [6] and [8] oppositely outwardly an end be opening, the sealing of inner tube [8] the other end, external pipe [6] the other end connects sealing with inner tube [8] wall; The horizontal passes through valve body inner tube of double-piston [8] wall, on, lower piston [1], [5] end face respectively with inner tube [8] wall on, following aperture [2], [7] corresponding coincideing, constitute double-piston axial on, following two locks stream sealed mouth, and two lock discharge orifice mouths small one and large one, inner cylinder face [10] on the circumference side of big piston [1] and valve body external pipe [6] wall constitutes the identical close mouth of slippage, body cavity is divided into control chamber [11] and active chamber by the identical close mouth of this slippage, active chamber is divided into inner chamber [9] and exocoel [4] by the lock of double-piston stream sealed mouth again, and promptly active chamber comprises inner chamber [9] and exocoel [4]; Control chamber has the communication passage connection to be communicated with active chamber, communication passage can be pipe or duct, the piston valve that the concrete connecting structure difference of communication passage can be a difference in functionality, as piston check valve, piston type check valve, piston type stop valve, piston type by floating valve, piston type Decompression valves, Piston reducing valve, piston type liquid level remote automatic control valve, piston type liquid level remote automatic control valve one-way valve, the piston type liquid level remote automatic control valve stop valve of holding concurrently of holding concurrently of stopping of the safety check of holding concurrently, piston type.
The better basic structure of the present invention (II) is to improve slightly on the basis of basic structure (I), improvements are that big piston [1] radially increases banister stream sealed mouth, referring to accompanying drawing 2, basic structure (II) is identical with structure (I), in the big piston [1] of different is double-piston radially has, outer double-deck lock stream sealed mouth, internal layer lock stream sealed mouth is coincide by big piston [1] end face and valve body inner tube [8] pit aperture [2] and constitutes, outer lock stream sealed mouth is by the formation of coincideing of the inward flange aperture [12] on big piston [1] end face and valve body external pipe [6] wall, and basic structure (II) also can be above-mentioned several piston valves of the difference in functionality that comprises of basic structure (I) according to the concrete connecting structure difference of communication passage connecting valve intracoelomic cavity.
The another kind of basic structure (III) of the present invention, it is identical with basic structure (II), different is that an auxiliary piston I [13] is arranged at its valve body control chamber [11] top, referring to accompanying drawing 3, auxiliary piston I [13] is connected on the same piston rod with the double-piston axially-spaced, and inner cylinder face [14] the formation slippage on auxiliary piston I [13] circumference side and valve body control chamber [11] wall coincide and remains silent; Control chamber [11] is separated into epicoele [16] and cavity of resorption [15] by auxiliary piston I [13].Basic structure (III) also can be above-mentioned several piston valves of the difference in functionality that comprised of basic structure (I) according to the concrete connecting structure difference of communication passage connecting valve intracoelomic cavity, but basic structure (III) mainly is applicable to piston type liquid level remote automatic control valve.
In addition, more flexible in order to make double-piston motion, the sealing of lock stream is tight, and the piston rod of the double-piston one or both ends of the basic structure of multifunctional piston valve (I) or (II) or (III) is extending, and sliding sleeve is gone in the guide hole on the valve body wall.
The working principle of the piston check valve of example example 1.2.3.4.5.6.7.8.9. is: valve is in when working under the open mode, the liquid flow path direction is active chamber exocoel [4] the inflow inner chamber [9] from valve, annular area between the radially inside and outside double-deck lock stream sealed mouth in the lower end surface of double-piston upper piston [1] is subjected to hydraulic coupling, and the lower end surface of lower piston [5] is subjected to flowing pressure, double-piston is upwards held up by hydraulic coupling, open the lock stream sealed mouth of valve, make opening of valves; When valve works in the non-return state, the hydraulic pressure of outflow end is greater than the hydraulic pressure that flows into end, the liquid stream of work inner chamber [9] outlet end of valve returns inner chamber [9], and through auxilliary pipe [17] inflow control chamber [11], because the area of hydraulic pressure bears hydraulic pressure greater than its lower end surface area is born in the upper and lower piston [1] of dual-active, the upper-end surface of [5], and going out flow liquid presses greater than influent stream hydraulic pressure, therefore double-piston since hydraulic coupling and deadweight make a concerted effort double-piston is moved downward, close lock stream sealed mouth, thereby prevent that fluid from refluxing through valve, realize the safety check function.
Implement 13, multifunctional piston valve of the present invention is the piston type check valve, employing basic structure (II), and the communication passage of body cavity is a pipeline, assists pipe [20] and connects the exocoel [4] that is communicated with interior control chamber [11] of valve body and active chamber, referring to accompanying drawing 20 and Fig. 2.
Implement 15, multifunctional piston valve of the present invention is the piston type check valve, adopts basic structure (II), concrete structure is identical with embodiment 13, but all extend at the piston rod two ends of different is its double-piston, and sliding sleeve is gone in guide hole [18] and [19] on the body wall, referring to accompanying drawing 22 and Fig. 2 respectively.
Embodiment 10 to the working principle of embodiment 18 piston type check valve is: when valve is in when opening working state, liquid stream flows into the active chamber inner chamber [9] of valve from pipe network, because the lock discharge orifice open area of upper piston [1] lower end of double-piston is greater than the upper-end surface area of lower piston [5], the suffered hydraulic coupling in the lower end surface of upper piston is greater than the suffered hydraulic coupling in lower piston upper-end surface, double-piston is held up, open valve, liquid stream [9] chamber in the active chamber of valve flows to exocoel [4], enters pipeline from the other end; When valve is in non-return state, liquid stream returns to active chamber exocoel [4] from pipeline, liquid flows to into exocoel [4], and entering control chamber [11] through auxilliary pipe [20] simultaneously, the upper and lower end face of the lower end surface of double piston type upper piston [1] and lower piston [5] in the flow stream pressure, has also increased the hydraulic coupling that the interior liquid of control chamber [11] is born in upper piston [1] upper-end surface in bearing active chamber, make double-piston move downward, close lock stream sealed mouth, stop liquid stream reverse backflow, realized the check valve function.
Embodiment 25.Multifunctional piston valve of the present invention is a piston type stop valve, adopting basic structure (III), body cavity communication passage is pipeline, two auxilliary [17], [20] of managing, an auxilliary pipe [17] connects the epicoele [16] and active chamber inner chamber [9] that is communicated with valve body inner control chamber [11] through small ball [21], the auxilliary pipe of another root [20] connects the epicoele [16] and active chamber exocoel [4] that is communicated with valve body inner control chamber [11] through small ball [22].Referring to accompanying drawing 34 and Fig. 3.
Embodiment 19 to the working principle of embodiment 27 piston type stop valve is: when valve is in opening state, small ball [21] on the auxilliary pipe [17] is closed, small ball [22] on the auxilliary pipe [20] is opened, liquid stream does not enter valve body control chamber [11], liquid flows to into active chamber inner chamber [9], the making a concerted effort of the hydraulic coupling that double-piston is suffered piston is moved upward, open lock stream sealed mouth, liquid stream flows to exocoel [4] from active chamber inner chamber [9]; When needs dam, open small ball [21], close small ball [22], liquid enters control chamber [11] from work inner chamber [9] through auxilliary pipe [17], the making a concerted effort of the suffered hydraulic pressure of double-piston piston is moved downward, and closes lock stream sealed mouth, realizes lock stream; When needs are opened piston type stop valve once more, close small ball [21] earlier, and open another ball valve [22], make opening of valves, when double-piston moved upward, the liquid in the control chamber [11] can flow into active chamber exocoel [4] earial drainage, opened smoothly to guarantee main valve.
Example 19 to embodiment 27 piston type stop valve also simultaneously with the safety check function, when being used as stop valve and being operated in the opening of valves state, small ball [21] is closed, small ball [22] is opened, pipe network water is injected the pond from valve body active chamber inner chamber [9] normal direction exocoel [4].When pipe network did not supply water, pond Zhong Shui through exocoel [4] the auxilliary pipe of warp [20] of valve and the control chamber [11] of small ball [22] injection valve, depressed double-piston [1] and [5] conversely, and cut-off valve, anti-sealing backflow from exocoel [4] and flow into inner chamber [9] realization safety check function.
Embodiment 32, multifunctional piston valve of the present invention is the piston type float valve, adopt basic structure (II), the body cavity communication passage is a pipeline, referring to accompanying drawing 43 and Fig. 2, auxilliary pipe [17] connects valve body inner control chamber [11] and active chamber inner chamber [9], and the big piston of its double-piston [1] end piston rod elongation sliding sleeve is gone in the valve body wall guide hole [18], and coaxial series connection auxiliary piston II [25], stretch out valve body outer join buoyancy aid [23] again.Inward flange constitutes lock stream sealed mouth on auxiliary piston II [25] end face and the valve body wall, and buoyancy aid [23] can be one or more.
Embodiment 35, and multifunctional piston valve of the present invention is the piston type float valve, adopt basic structure (II), and concrete structure is identical with embodiment 34, but different be that its double-piston the other end piston rod extends, slip in the guide hole on the valve body wall [19], referring to accompanying drawing 46 and Fig. 2.
Embodiment 36, multifunctional piston valve of the present invention is the piston type float valve, adopt basic structure (III), the body cavity communication passage is a pipeline, referring to Figure 47 and Fig. 3, auxilliary pipe [17] connects the epicoele [16] and active chamber inner chamber [9] that is communicated with valve body inner control chamber [11], the piston rod of its double-piston is from the elongation of auxilliary piston [13] end, sliding sleeve is gone in the guide hole on the valve body wall [18], and coaxial series connection auxiliary piston II [25], stretch out valve body again and connect buoyancy aid [23] outward, inward flange constitutes lock stream sealed mouth on auxiliary piston II [25] end face and the valve body wall, and buoyancy aid [23] can be one or more.
Embodiment 47, and multifunctional piston valve of the present invention is a piston type liquid level remote automatic control valve, adopt basic structure (III), concrete structure is identical with embodiment 46, but the piston rod one end elongation of different is its double-piston, sliding sleeve are gone in the guide hole [18] on the valve body wall, referring to accompanying drawing 60 and Fig. 3.
Embodiment 48, the multi-functional piston of the present invention is a piston type liquid level remote automatic control valve, adopt basic structure (III), concrete structure is identical with embodiment 46, but all extend at the piston rod two ends of different is its double-piston, sliding sleeve is gone in guide hole [18] and [19] on the valve body wall, referring to accompanying drawing 61 and Fig. 3 respectively.
Embodiment 40 is to embodiment 48 piston type liquid level remote automatic control valve, and its working principle is: the flow through active chamber of piston type liquid level remote automatic control valve of liquid flows into liquid storage tank, and the work intraluminal fluid flow path direction of valve is to flow to inner chamber [9] from exocoel [4].When the liquid storage tank liquid level is lower than a certain value, the buoyancy aid [26] of piston floating body valve [27] is not subjected to buoyancy, piston floating body valve [27] is opened voluntarily, liquid in the main valve control chamber [11] can release through piston floating body valve [27], double-piston is risen by flow stream pressure jacking in the pipe network, piston type liquid level remote automatic control valve is opened, and infuses to liquid storage tank; When the liquid storage tank liquid level rises to a certain value, the buoyancy aid [26] of piston floating body valve [27] is subjected to push up on the buoyancy, making piston float float valve [27] closes, liquid is gone into main valve control chamber [11] through auxilliary pipe [17] shunting in the main valve active chamber inner chamber [9], double-piston is subjected to hydraulic coupling to pressing down, and the closure gate head piece is closed main valve, the liquid liquid storage tank that do not reinject reaches the purpose of automatic control of liquid level.
Auxilliary pipe [17] caliber is thicker, and piston floating body valve [27] can be installed in the place away from main valve, so liquid level remote automatic control valve of the present invention can be realized the far distance automatic controlling to liquid level in the liquid storage tank.
When the buoyancy aid [26] of the piston floating body valve [27] that its auxilliary pipe [17] connects is slidingly connected on its piston rod, buoyancy aid can be free to slide the location along its piston rod between upper limit position and lower position, some position locations in this buoyancy aid sliding scale, liquid level rises and piston floating body valve [27] cuts out, the double-piston of main valve is closed, no longer fluid injection so just makes piston type liquid level remote automatic control valve have the function of liquid level positioning control valve concurrently, can control liquid level position in the liquid storage tank.
Embodiment 49, and multifunctional piston valve of the present invention is the liquid level remote automatic control valve one-way valve of holding concurrently, and adopts basic structure (III), and the body cavity communication passage is a pipeline.Referring to accompanying drawing 62 and Fig. 3, concrete structure is identical with embodiment 46 and accompanying drawing 59, but different be to have auxilliary pipe [36] to connect in addition to be communicated with valve body control chamber cavity of resorptions [15] and active chamber inner chamber [9].
The hold concurrently working principle of one-way valve of embodiment's 49 liquid level remote automatic control valves is: the working principle of liquid level remote automatic control valve is identical with the working principle of embodiment 46 liquid level remote automatic control valve, as described above, its one-way valve working principle is, when pipe network stops to supply water, water storage in the pond plays double-piston [1], [5] through exocoel [4] jacking, water in the control chamber epicoele [16] can enter valve body active chamber inner chamber [9] through auxilliary pipe [36], because double-piston is opened, water storage flows to inner chamber [9] from exocoel [4] in the pond, outwards supplies water.
Embodiment 50, the utility model multifunctional piston valve, it is the liquid level remote automatic control valve stop valve of holding concurrently, adopt basic structure (III), the body cavity communication passage is a pipeline, referring to accompanying drawing 63 and Fig. 3, and concrete structure and embodiment 46, accompanying drawing 59 is identical, does not have auxilliary pipe [36] to connect connection valve body control chamber epicoele [16] and active chamber inner chamber [9] in addition but be not both; The auxilliary pipe in [17], [20], [36] is equipped with small ball [37], [38], [39] respectively.
Embodiment's 50 liquid level remote automatic control valves stop valve working principle of holding concurrently is, when opening small ball [37], [38], when closing small ball [39], is liquid level remote automatic control valve, and its working principle is identical with embodiment 46, as described above; When closing small ball [37], [38] and opening small ball [39], it is the piston stop valve, after this moment, pipe network water flow to valve insertion [9], enter valve control chamber epicoele [16] through auxilliary pipe [36], water pressure pushing auxiliary piston [13] drives double-piston [1], [5] descend, and cut-off valve makes valve end water supply.
Embodiment 49 the liquid level remote automatic control valve one-way valve of holding concurrently, embodiment 50 double ending of liquid level remote automatic control valve, be used for the high-level tank water system, its advantage is: can save facility, and simplied system structure.
The structural configuration schematic representation of related valves is referring to Figure 76 in existing elevated tank, the water system, and liquid level Remote control valve B wherein replaces as if the stop valve of holding concurrently with embodiment 50 liquid level telecontrol, and then a valve is dual-purpose, can save its preposition supporting stop valve A; As if the liquid level remote automatic control valve B among the one-way valve replacement Figure 76 that holds concurrently with embodiment 49 liquid level remote automatic control valve, then multi-purpose valve just can save safety check C and its preposition supporting stop valve D and connecting pipe thereof among Figure 76.
Embodiment 51, multifunctional piston valve of the present invention is the piston type Decompression valves, adopt basic structure (III), the body cavity communication passage is a pipeline, referring to accompanying drawing 65, through the common choosing stream chamber [38] that is communicated to pilot valve I [39] that connects of auxilliary pipe [37], the chamber [46] that goes out to flow of pilot valve I [39] connects through auxilliary pipe [20] and is communicated to valve body active chamber exocoel [4] through auxilliary pipe [17], control chamber epicoele [16] for its active chamber inner chamber [9].
Pilot valve I [39] can be described as Auxiliary valves again, it is single piston valve, referring to Figure 65, its piston [43] is fixed on the interior India rubber film tabula layer [42] of its valve body, the spring of exerting pressure [41] is housed above the tabula layer, but mat adjusting screw [40] is adjusted spring pressure, and the inner headed face of the upright cylinder [45] in the piston rod of pilot valve I [39] and its valve body constitutes the identical close mouth of slippage.Pilot valve I [39] is when being in closed condition, and piston [43] is divided into pilot valve I [39] active chamber influent stream chamber [38] and goes out to flow chamber [46], piston [43] lower end surface push down out stream chamber [46] on stretch flange [44] aperture, form lock stream sealed mouth.
The working principle of piston type Decompression valves is: under the pilot valve closed condition, adjust its adjusting screw [40] in advance, the pressure that makes the spring of exerting pressure [41] is certain value, for example 12kg/cm
2During Decompression valves work, enter the influent stream chamber [38] of pilot valve I [39] from body cavity [9] through the pipe network water that connecting pipe [17] comes, when pipe network water pressure is lower than this value, then pilot valve I [39] tabula layer [42] spring [41] pressure of being exerted pressure descends piston [43] and closes the guide, valve I [39], the pipe network water that enters its influent stream chamber [38] the auxilliary pipe [37] of flowing through returns and flows into valve body of main valve control chamber epicoele [16], and double-piston is descended, and closes Decompression valves; If the water flow pressure that pipe network comes is higher than this value, then high-pressure water flow is sent into the influent stream chamber [38] of pilot valve I [39] through auxilliary pipe [17] from the inner chamber [9] of valve, force on the tabula layer [42] and carry, piston [43] rises, open pilot valve I [39], simultaneously, the high-pressure water flow jacking that enters body cavity [9] plays double-piston, Decompression valves is opened, pressure release.Prevent that hydraulic pressure is too high, avoids pipe network to burst.
Embodiment 52, multifunctional piston valve of the present invention is the piston Decompression valves, adopt basic structure (III), the body cavity communication passage is a pipeline, referring to accompanying drawing 66, and its active chamber exocoel [4], the auxilliary pipe of mat [20] connects with control chamber cavity of resorption [15] and is communicated with, spring [56] is equipped with in auxiliary piston I [13] top, and spring [56] top connects adjusting screw [57], mat adjusting screw [57] can Regulation spring [56] to the pressure size of auxiliary piston I [13].The piston rod elongation sliding sleeve of the small piston of double-piston [5] end is gone in the guide hole [19] on the valve body.
Its working principle is: when valve is in closed condition, it is certain value to the pressure of auxiliary piston I [13] that mat adjusting screw [57] is adjusted spring [56] in advance, when the pipe network liquid stream that enters valve insertion [9] is worth greater than this hydraulic coupling of double-piston, double-piston will overcome the pressure of spring [56] and upwards rise, open valve, reach the purpose of pressure release.Auxilliary pipe [20] is to provide current by pass for the liquid stream in the control chamber cavity of resorption [15].
The advantage of embodiment 52 piston type Decompression valves is: saved pilot valve, simple in structure, compactness is the optimum structure of piston type Decompression valves.
Embodiment 53, multifunctional piston valve of the present invention, it is Piston reducing valve, adopt basic structure (III), the body cavity communication passage is a pipeline, referring to Figure 68, its active chamber inner chamber [9] connects the influent stream chamber [47] that is communicated to pilot valve II [48] jointly through assisting pipe [17], control chamber epicoele [16] the auxilliary pipe of warp [37], and chamber [53] the auxilliary pipe of warp [20] connection that goes out to flow of pilot valve II [48] is communicated to valve body active chamber exocoel [4].
Pilot valve II [48] can be described as Auxiliary valves again, it is single piston valve, referring to accompanying drawing 68, its piston [55] is fixed on the interior India rubber film tabula layer [51] of its valve body, the spring of exerting pressure [50] is housed above the tabula layer [51], but mat adjusting screw [49] is adjusted spring pressure, the inner headed face of the upright cylinder [52] in pilot valve II [48] piston rod and its valve body constitutes the identical close mouth of slippage, pilot valve II [48] is when being in closed condition, its piston [55] is divided into pilot valve II [48] active chamber influent stream chamber [47] and goes out to flow chamber [53], the following aperture of stretching flange [54] in influent stream chamber [47] is pushed down in the upper-end surface of piston [55], forms lock stream sealed mouth.
The working principle of Piston reducing valve is: under pilot valve II [48] open mode, adjust its adjusting screw [49], making the pressure of the spring of exerting pressure [50] is certain certain value, for example 3～4kg/cm
2During reduction valve work, when the going out flow liquid and force down of valve body exocoel [4] in this value, the pilot valve II is opened, the reduction valve double-piston is also opened, keep normal feed flow, when the flow liquid that goes out of valve body exocoel [4] is pressed when being higher than this value, tabula layer [51] is overcome by hydraulic pressure to exert pressure the pressure of spring [50], upwards lifting, driving piston [55] rises, the lock head piece of pilot valve [48] is also little or close, and then makes double-piston decline by the influent stream liquid that returns in the connecting pipe [37], turns down reduction valve lock head piece, the middle hydraulic pressure of exocoel [4] is reduced, or cut-off valve.Thereby keep going out in the exocoel [4] the flow liquid pressure and be certain value.
The present invention can also be by basic structure (I) the another kind of basic structure (IV) of deriving, referring to accompanying drawing 69, multifunctional piston valve mainly is made of valve body and the piston that is loaded in the valve body, its piston is for being connected in axially-spaced on the same stockaded village alive bar, the double-piston that small one and large one two pistons [1] and [5] constitute; In valve body is, outer double layered tubular structure, inner tube [29] and external pipe [31] oppositely outwardly an end be opening, inner tube [29] the other end connects sealing with external pipe [31] wall, external pipe [31] the wall the other end connects sealing with inner tube [29] wall, the horizontal passes through valve body pipe of double-piston, it is big, the small piston end face respectively with inner tube [29] wall on, following aperture [2], [7] corresponding coincideing, constitute double-piston axial on, following two locks stream sealed mouth, and two locks stream sealed mouth correspondingly small one and large one, the inner cylindrical surface [10] on the circumference side of big piston [1] and valve body external pipe [31] wall constitutes the identical close mouth of slippage.Body cavity is divided into control chamber [11] and active chamber by this sliding sealed mouth, and active chamber is divided into inner chamber [28] and exocoel [30] by the lower piston of double-piston [5] lock stream sealed mouth again; The piston rod one or both ends of its double-piston are extended sliding sleeve respectively and are gone in guide hole [18] and [19] on the valve body wall; Control chamber [11] has the communication passage connection to be communicated with active chamber, and communication passage can be pipeline or duct.
The piston valve that the concrete connecting structure difference of connecting pipe can be a difference in functionality is as piston check valve, piston type check valve, piston type stop valve, piston type stop valve hold concurrently back valve, piston type liquid level remote automatic control valve.
Embodiment 54, and multifunctional piston valve of the present invention is a piston check valve, adopt its body cavity of the above-mentioned basic structure of deriving (IV) to connect the control chamber [11] of connection valve body and the inner chamber [28] of active chamber by auxilliary pipe [20], referring to accompanying drawing 70.
The working principle of its piston check valve is: valve is in when working under the opening state, the liquid flow path direction is that the active chamber exocoel [30] from valve flows to inner chamber [28], lower piston [5] lower end surface is subjected to hydraulic coupling to hold up piston, open the lock stream sealed mouth of valve, make opening of valves, afterwards, by piston [1] and the suffered common maintaining valve opening state of hydraulic coupling of piston [5]; When valve is in non-return or check working state, its outflow end hydraulic pressure is greater than flowing into end hydraulic pressure, liquid stream returns from active chamber inner chamber [28] and flows into exocoel [30], liquid stream enters control chamber [11] from auxilliary pipe [20] simultaneously, because the upper and lower piston [1] of double-piston, the area that hydraulic pressure is born in [5] upper-end surface bear the area of hydraulic pressure greater than its lower end surface, and former outflow end stream is pressed greater than flowing into end stream and is pressed, thereby double-piston be subjected to the deadweight of hydraulic coupling and piston make a concerted effort double-piston is moved downward, close lock stream sealed mouth, make valve realize the function of non-return or check.
Embodiment 55, multifunctional piston valve of the present invention is a piston type stop valve, adopt the basic structure of deriving [IV] of accompanying drawing 69, its concrete structure is referring to accompanying drawing 71, body cavity is connected through small ball [21] by auxilliary pipe [17] and is communicated with chamber [30] outside valve body inner control chamber [11] and the active chamber, and the auxilliary pipe of another root [20] connects through small ball [22] and is communicated with chamber [28] within valve body inner control chamber [11] and the active chamber.The piston rod mat coupling rod [33] of big piston [1] end stretches out valve body and connects regulating handle [34] outward.Coupling rod [33] has one section to connect with the tired line of valve body mat, rotates regulating handle [34] bar [33] can be advanced and retreat.
Embodiment 55 working principle and embodiment 19 are basic identical to embodiment's 27 working principles that piston type stop valve is stated, but the piston type stop valve of present embodiment can also be by the opening degree of regulating handle [34] adjusting control valve, i.e. the flow size of adjusting control valve.
The piston type liquid level remote automatic control valve working principle of embodiment's 57 piston type liquid level remote automatic control valve working principles and previous embodiment 40 to 48 is basic identical.When liquid level was lower than buoyancy aid [26], buoyancy aid [26] was not subjected to buoyancy, and the buoyancy aid piston valve makes piston open valve automatically by action of gravity, thereby by hydraulic pressure double-piston was held up, and opened main valve automatically, the fluid injection in the pond of liquid level remote automatic control valve; After liquid level rose to certain altitude, floating function closed buoyancy aid piston valve [27] in buoyancy aid [26], thereby by the hydraulic pressure of liquid stream in the main valve main valve was closed, and liquid level remote automatic control valve stops fluid injection automatically.
Embodiment 58, multifunctional piston valve of the present invention is a piston check valve, adopt the basic structure of deriving (IV) shown in the accompanying drawing 69, but the last aperture [2] of different is its valve body inner tubal wall radially is contracted to the double piston-rod place, and constitute the identical close mouth of slippage with piston rod, and do not constitute lock stream sealed mouth with the big piston end face; Body cavity connects the cavity of resorption [15] of connection control control [11] and the exocoel [30] of active chamber by the intercommunicating pore on the valve interior wall [35], connects the epicoele [16] and active chamber inner chamber [28] that is communicated with control chamber [11] by auxilliary manage [20].Referring to accompanying drawing 74.
Its working principle is: the flow liquid direction is when the active chamber exocoel [30] of valve flows to inner chamber [28], and the piston of valve is risen by the hydraulic coupling jacking that makes progress, and valve is in opens working state; When liquid stream oppositely when active chamber [28] flows to exocoel [30], liquid stream flows to control chamber [11] through auxilliary pipe [20] from inner chamber [28] simultaneously, hydraulic coupling produces double-piston and moves downward, and valve cuts out, and realizes check function.Intercommunicating pore [35] provides the interior liquid of active chamber [11] to flow circulation road.
Embodiment's 59 multifunctional piston valves of the present invention are piston type check valves, adopt the basic derived structure (IV) shown in the accompanying drawing 69, but the last aperture [2] of different is valve body inner tubal wall is extended to valve body tube wall place, and do not contact, thereby cancelled the axial brake application stream sealed mouth of double-piston that constitutes by both with the big piston end face of double-piston; Body cavity is connected the inner chamber [28] that is communicated with control chamber [11] and active chamber by auxilliary pipe [20].Referring to accompanying drawing 75.
Its working principle is: when liquid stream when the exocoel [30] of active chamber flows to inner chamber [28] in valve body, hydraulic coupling plays the double-piston jacking that makes progress, and valve is in opens working state; Reverse when inner chamber [28] flows to exocoel [30] when liquid stream, [20 enter control chamber [11], make that double-piston is stressed to be moved downward, and valve cuts out, and realize the check valve function because liquid stream is simultaneously from auxilliary pipe.
The advantage of multifunctional piston valve of the present invention is its dual-piston structure, and two pistons different by axial extent produce liquid The pressure force action makes piston movement agile laborsaving, and the radially inside and outside double-deck lock of piston flows the seal good seal simultaneously, Eliminate seepage, also can exempt the rubber sealing ring vulnerable components, and radially double-deck lock head piece and axially double-piston combine, Can eliminate again vibration and needn't come cushioning effect with spring again, with existing check-valves, non-return valve, stop valve, buoyancy aid Piston valve, fluid level control valve, relief valve and pressure-reducing valve compare, and its improvements are: for check-valves, and the present invention Cancelled the trimmer valve for installing with water hammering in the preposition pipeline of existing check-valves; For non-return valve, this Buffer spring or the yielding rubber member that bears impact of water hammer in the existing non-return valve structure cancelled in invention; For stop valve , the present invention cancelled heavy operating grip and the consumable accessory asbestos seal ring of existing stop valve, and of the present invention section End the also uninterrupted of adjustable control valve of valve; For float piston valve, the structure position of the buoyancy aid piston among the present invention Put unlike the prior art, directly do not bear ductwork pressure, the stressed of it also has nothing to do with water-in and water-out caliber size, therefore The buoyancy aid volume is little, and duty is little, installs and uses the restriction of not managed pressure and pipe diameter size; For fluid level control valve, this Buffer spring in the existing fluid level control valve structure and the rubber packing of consumable accessory rubber separation membrane and piston have been cancelled in invention Circle can be realized far distance controlled again simultaneously; For relief valve and pressure-reducing valve, cancelled existing pressure-reducing valve, relief valve These two kinds of consumable accessorys of lute of the rubber membrane tabula layer of main valve and row pilot valve piston rod thereof in the life-span of improving valve, change Advanced the barrier performance of valve; In addition, piston type stop valve of the present invention also has return valve function concurrently, both can be used as stop valve, Can be used as again check-valves; The liquid level of the present invention sequencing valve far away check valve of holding concurrently is used for the high-level tank water system, can save The check-valves that system must install originally is preposition supporting stop valve and duct coupling thereof with it; Liquid level of the present invention is long-range certainly The control valve is held concurrently stop valve when being used for the high-level tank water system, and can save it must preposition supporting stop valve; Thereby So that multifunctional piston valve designs simplification of the present invention, highly versatile, the convenient manufacturing, and operation is more reliable when using, and does not have Seepage, and the valve open and close is flexible, does not have simultaneously consumable accessory, reduces and safeguards or even or need not safeguard.
Claims (18)
1, one kind of multiple function piston valves are multi-functional fluid road valves, and multifunctional piston valve can be piston check valve, piston type check valve, piston type stop valve, piston type stop valve hold concurrently safety check, piston type float valve, piston type liquid level remote automatic control valve.Piston type liquid level remote automatic control valve hold concurrently one-way valve, piston type liquid level remote automatic control valve hold concurrently stop valve, piston type Decompression valves, Piston reducing valve, multifunctional piston valve mainly are made of valve body and the piston that is loaded in the valve body, it is characterized in that:
(1) piston is a double-piston, and it constitutes by being connected in axially spaced small one and large one two pistons of same piston rod
(2) valve body is inside and outside double layered tubular, double-piston end face and valve body inner layer tube wall aperture constitute piston shaft to upper and lower two brake applications stream sealed mouth; Its big piston circumference side and valve body tube wall constitute the identical close mouth of slippage.
(3) control chamber in the valve body is communicated with the connection of active chamber mat communication passage.
2, multifunctional piston valve according to claim 1 is characterized in that the big piston of its double-piston radially has inside and outside double-deck lock stream sealed mouth.
3, multifunctional piston valve according to claim 1 and 2 is characterized in that the stockaded village alive bar of its double-piston one or both ends is extending, and sliding sleeve is gone in the guide hole on the valve body wall.
4, multifunctional piston valve according to claim 1 and 2 is a piston check valve, it is characterized in that communication passage is the intercommunicating pore on auxilliary pipe or the valve interior wall, is communicated with the interior control chamber of valve body and the inner chamber or the exocoel of active chamber.
5, multifunctional piston valve according to claim 1 and 2 is the piston type check valve, it is characterized in that communication passage is auxilliary pipe, is communicated with the interior control control of valve body and the exocoel or the inner chamber of active chamber.
6, multifunctional piston valve according to claim 1 and 2, it is piston type stop valve or the piston type stop valve safety check of holding concurrently, its feature is two auxilliary pipes in its communication passage, an auxilliary pipe connects through small ball and is communicated with chamber within valve body inner control chamber and the active chamber, and the auxilliary pipe of another root connects through small ball and is communicated with chamber outside valve body inner control chamber and the active chamber.
7, multifunctional piston valve according to claim 1 and 2 is the piston type float valve, it is characterized in that its communication passage is auxilliary pipe or connected pore channel, is communicated with valve body inner control chamber and active chamber inner chamber; The coaxial series connection auxiliary piston of its piston one end piston rod II is stretched out valve body again and is connected buoyancy aid outward, and it is one outer or a plurality of that buoyancy aid can be.
8, multifunctional piston valve according to claim 1 and 2, it is piston type liquid level remote automatic control valve, it is characterized in that communication passage is auxilliary pipe, connect connection valve body inner control chamber and active chamber inner chamber or exocoel through the piston floating body valve, the buoyancy aid of piston floating body valve can be fixed on its piston rod or on its piston rod and be slidingly connected.
9, multifunctional piston valve according to claim 1 and 2, it is piston type liquid level remote automatic control valve, an auxiliary piston I is arranged at the top that it is characterized in that its valve body inner control chamber, auxiliary piston I and double-piston axially-spaced are connected on the same piston rod, and the inner cylinder face on auxiliary piston I circumference side and the valve body control chamber wall constitutes the identical close mouth of slippage; Control chamber is separated into epicoele and cavity of resorption by the auxiliary piston I, and epicoele is communicated to the active chamber inner chamber by auxilliary pipe through the connection of piston floating body valve, and the buoyancy aid of piston floating body valve can be fixed on its piston rod or on its piston rod and be slidingly connected.
10, multifunctional piston valve according to claim 1 and 2, it is the piston type liquid level remote automatic control valve one-way valve of holding concurrently, an auxiliary piston I is arranged at the top that it is characterized in that its valve body inner control chamber, auxiliary piston I and double-piston axially-spaced are connected on the same piston rod, and the inner cylinder face on auxiliary piston I circumference side and the valve body control chamber wall constitutes the identical close mouth of slippage; Control chamber is separated into epicoele and cavity of resorption by the auxiliary piston I, and epicoele is communicated to the active chamber inner chamber by auxilliary pipe through the connection of piston floating body valve, and the buoyancy aid of piston floating body valve can be fixed on its piston rod or on its piston rod and be slidingly connected; Other has auxilliary pipe to connect connection control chamber cavity of resorption and active chamber inner chamber.
11, multifunctional piston valve according to claim 1 and 2, it is the piston type liquid level remote automatic control valve stop valve of holding concurrently, it is characterized in that an auxiliary piston I is arranged at the control chamber top in the valve body, auxiliary piston I and double-piston axially-spaced are connected on the same piston rod, and the inner cylinder face on auxiliary piston I circumference side and the valve body control chamber wall forms the identical close mouth of slippage; Control chamber is separated into epicoele and cavity of resorption by the auxiliary piston I, epicoele passes to the piston floating body valve by auxilliary pipe through the small ball connection, the piston floating body valve is communicated to valve body active chamber inner chamber by the auxilliary pipe of another root through another small ball connection, is connected by three small balls of the 3rd auxilliary Guan Jingdi and is communicated with control chamber epicoele and active chamber inner chamber; The buoyancy aid of its piston floating body valve can be fixed on its piston rod or on its piston rod and be slidingly connected.
12, multifunctional piston valve according to claim 1 and 2, it is piston check valve, it is characterized in that an auxiliary piston I is arranged at the control chamber top in the valve body, auxiliary piston I and double-piston axially-spaced are connected on the same piston rod, and the inner cylinder face on auxiliary piston I circumference side and the valve body control chamber wall forms the identical close mouth of slippage; Control chamber is separated into epicoele and cavity of resorption by the auxiliary piston I, and epicoele is communicated to the active chamber inner chamber by auxilliary pipe connection.
13, multifunctional piston valve according to claim 1 and 2, it is the piston type check valve, it is characterized in that an auxiliary piston I is arranged at the control chamber top in the valve body, auxiliary piston I and double-piston axially-spaced are connected on the same piston rod, and the inner cylinder face on auxiliary piston I circumference side and the valve body control chamber wall forms the identical close mouth of slippage; Control chamber is separated into epicoele and cavity of resorption by the auxiliary piston I, and epicoele is communicated to the active chamber exocoel by auxilliary pipe connection.
14, multifunctional piston valve according to claim 1 and 2, it is piston type stop valve, or the piston type stop valve safety check of holding concurrently, it is characterized in that an auxiliary piston I is arranged at the control chamber top in the valve body, auxiliary piston I and double-piston axially-spaced are connected on the same piston rod, and the inner cylinder face on auxiliary piston I circumference side and the valve body control chamber wall forms the identical close mouth of slippage; Control chamber is separated into epicoele and cavity of resorption by the auxiliary piston I, and epicoele is communicated to active chamber inner chamber and exocoel through the small ball connection respectively by two auxilliary pipes.
15, multifunctional piston valve according to claim 1 and 2, it is the piston valve type float valve, its feature is being, an auxiliary piston I is arranged at the control chamber top in its valve body, auxiliary piston I and double-piston axially-spaced are connected on the same piston rod, and the inner cylinder face on auxiliary piston I circumference side and the valve body control chamber wall forms the identical close mouth of slippage; Control chamber is separated into epicoele and cavity of resorption by the auxiliary piston I, and epicoele is connected by auxilliary pipe and is communicated with the active chamber inner chamber, or the duct on the control chamber cavity of resorption mat piston is communicated with the active chamber inner chamber; The coaxial series connection auxiliary piston of its auxiliary piston I one end piston rod II is stretched out valve body again and is connected buoyancy aid outward, and buoyancy aid can be one or more.
16, multifunctional piston valve according to claim 1 and 2, it is the piston type Decompression valves, it is characterized in that an auxiliary piston I is arranged at the control chamber top in its valve body, auxiliary piston I and double-piston axially-spaced are connected on the same piston rod, and the inner cylinder face on auxiliary piston I circumference side and the valve body control chamber wall forms slippage rhynchostome close mouth; Control chamber is separated into epicoele and cavity of resorption by the auxiliary piston I; Valve body active chamber inner chamber, control chamber epicoele connect the influent stream chambeies that are communicated to the pilot valve I jointly through two auxilliary pipes respectively, and the chamber that goes out to flow of pilot valve I is communicated to valve body active chamber exocoel through auxilliary pipe connection; Upright cylinder inner headed face in the piston rod of pilot valve I and its valve body constitutes the identical close mouth of slippage, and when the pilot valve I was in closed condition, its piston lower surface was pushed down out and stretched the flange aperture on the stream chamber, forms lock stream sealed mouth.
17. multifunctional piston valve according to claim 1 and 2, it is the piston type Decompression valves, it is characterized in that an auxiliary piston I is arranged at the control chamber top in the valve body, auxiliary piston I and double-piston axially-spaced are connected on the same piston rod, and the inner cylinder face on auxiliary piston I circumference side and the valve body control chamber wall forms the identical close mouth of slippage; Control chamber is separated into epicoele and cavity of resorption by the auxiliary piston I, and cavity of resorption is communicated to the active chamber exocoel by auxilliary pipe connection, and spring is equipped with in auxiliary piston I top, and the spring top connects adjusting screw.
18, multifunctional piston valve according to claim 1 and 2, it is Piston reducing valve, its feature has an auxiliary piston I based on the control chamber top in its valve body, and auxiliary piston I and double-piston axially-spaced are connected on the same piston rod inner cylinder face on the auxiliary piston I circumference side and valve body control chamber wall and form the slippage close mouth of coincideing; Control chamber is separated into epicoele and cavity of resorption by the auxiliary piston I; Valve body active chamber inner chamber, control chamber epicoele connect the influent stream chambeies that are communicated to the pilot valve II jointly through two auxilliary pipes respectively, and the chamber that goes out to flow of pilot valve II is communicated to valve body active chamber exocoel through auxilliary pipe connection; Upright cylinder inner headed face in pilot valve II piston rod and its valve body constitutes the identical close mouth of slippage, and when the pilot valve II was in closed condition, the following flange aperture of stretching in influent stream chamber was pushed down in its piston upper-end surface, forms lock stream sealed mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00113244 CN1219166C (en) | 2000-01-27 | 2000-01-27 | Multifunctional piston valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00113244 CN1219166C (en) | 2000-01-27 | 2000-01-27 | Multifunctional piston valve |
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| CN1307193A true CN1307193A (en) | 2001-08-08 |
| CN1219166C CN1219166C (en) | 2005-09-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075003A (en) * | 2014-06-30 | 2014-10-01 | 无锡市威海达机械制造有限公司 | Ultrahigh pressure one-way valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075003A (en) * | 2014-06-30 | 2014-10-01 | 无锡市威海达机械制造有限公司 | Ultrahigh pressure one-way valve |
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