CN106195311B - A kind of fire-proof ball valve - Google Patents
A kind of fire-proof ball valve Download PDFInfo
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- CN106195311B CN106195311B CN201610646132.0A CN201610646132A CN106195311B CN 106195311 B CN106195311 B CN 106195311B CN 201610646132 A CN201610646132 A CN 201610646132A CN 106195311 B CN106195311 B CN 106195311B
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- shell
- sphere
- support component
- accommodating space
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0668—Single packings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0657—Particular coverings or materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
Abstract
The present invention relates to a kind of ball valves, and in particular to a kind of fire-proof ball valve.Fire-proof ball valve includes first shell, sphere and axis body, and first shell includes the first accommodating space and tube body；Sphere is located in first accommodating space, and the both ends setting of sphere is equipped with the first groove with external two logical through-hole, the top of sphere, and first groove corresponds to the tube body；The blocking part with first fit depressions is arranged in axis body one end, and blocking part is hubbed in the tube body；The side of first shell also sets up second shell, second shell includes the second accommodating space, second shell inner wall is arranged circumferentially one week expansion block, first shell inner wall is arranged circumferentially two weeks about the symmetrical support component in sphere maximum gauge face, and support component is more than the contact area of support component and sphere with the contact area of first shell inner wall.Fire-proof ball valve of the present invention can provide stable rotation to sphere and support, and can increase substantially ball valve service life, high temperature resistant, and flame retardant property is good.
Description
Technical field
The present invention relates to a kind of ball valves, and in particular to a kind of fire-proof ball valve.
Background technology
For a long time, oneself is well-known for ball valve, and general ball valve has：There is ontology fluid to flow into access, fluid flows out and leads to
Road and fluid flow into the interconnecting part between access, fluid flow exiting throughways；Sphere has fluid communication passageway and can be around reference axis
The mode of rotation is disposed in the interconnecting part of ontology；And it in substantially cylindric ball seat, is disposed between sphere and ontology, week
Wall be equipped with required opening portion, make sphere around reference axis rotate and carry out fluid inflow access and fluid flow exiting throughways connection and
It blocks.
However in the field of large-scale ball valve, since the volume of the sphere in large-scale ball valve is big, weight weight, sphere exists
Inside ball valve for a long time because of centrifugal force under the influence of so that stress load-bearing in bottom in ball valve, and when in use, sphere need turn again
To whether to control fluid circulation, in the case of gravity, pressure and frictional force so that bottom is easy loss deformation, production in ball valve
Raw failure, therefore still there is improvement space inside large-scale ball valve, to promote durability.
Chinese patent CN205078934U discloses a kind of fire-proof ball valve, belongs to field of fluid machinery.The fire-proof ball valve packet
Include valve body, valve deck, the sphere being arranged in valve body；Metal seat valve, metal seat valve inner circle are provided between the sphere and valve deck
Zhou Kaiyou annular grooves are provided with soft sealing valve seat in annular groove, and soft sealing valve seat even at the cost of one's life in annular groove and has one end and ball by pushing out ring
Body contacts；It is additionally provided with fire prevention valve seat between metal seat valve excircle and valve deck, is provided between metal seat valve end face and valve deck
Spring base, fire prevention valve seat are against on spring base.The reliability that valve is effectively improved using the utility model prevents some high-risk works
The danger such as combustion fire, explosion easily occur in the use of condition.But the patent fire-proof ball valve wears no resistance, service life is short.It is Chinese special
Sharp CN205001550U discloses a kind of ball valve structure-improved, includes:One first shell, have one first accommodating space and
One tube body, which is set to inside the first shell and both ends are connected to outside, which is set to the first shell
Top surface, and be connected to first accommodating space；Plural support component is located on the first accommodating space inner wall；One ball
Body, the through-hole for having a both ends logical with outside two, and the top of the sphere are equipped with a groove, which is located in first appearance
In emptying, the groove of the sphere is made to correspond to the tube body, is resisted against on the respectively support component on the outside of the sphere；And an axis body,
One end has a blocking part, and is hubbed in the tube body, which is combined with the groove.But above-mentioned patent valve exists
During use, since its support element is on the equator line position of sphere, during sphere rotates, can not to its into
The more stable rotation support of row, the especially process of the liquid opening and closing of high pressure, the stress of sphere are non-uniform, only equatorial circles
The support of all positions can not ensure that sphere for the uniform of ball pad active force, is unfavorable for the extension of ball pad service life, and
The ball valve fire protecting performance is poor.
Invention content
To overcome drawbacks described above, the purpose of the present invention is to provide a kind of fire-proof ball valve, inner ball stress evenly, ball
Body and shell frictional force smaller, stability is high, high temperature resistant, and flame retardant property is good.
A kind of fire-proof ball valve, including first shell, sphere and axis body, the first shell include the first accommodating space and pipe
Body, first accommodating space is set to inside the first shell and both ends are connected to outside, and the tube body is set to described first
The top surface of shell, and be connected to first accommodating space；The sphere is located in first accommodating space, the sphere
The both ends setting through-hole logical with outside two, the top of the sphere is equipped with the first groove, and first groove corresponds to the pipe
Body；The blocking part of axis body one end setting and first fit depressions, the blocking part are hubbed in the tube body；Institute
The side for stating first shell also sets up second shell, and the second shell includes the second accommodating space, second accommodating space
Inside the second shell and both ends are connected to outside, first accommodating space and the connection of the second accommodating space, described
Second shell inner wall is arranged circumferentially one week expansion block, and the first shell inner wall is arranged circumferentially two weeks about sphere maximum gauge face
Symmetrical support component, the sphere outer wall are resisted against on the support component, the support component and first shell inner wall
Contact area is more than the contact area of support component and sphere.
Preferably, gradually-reducing shape neck, the neck portion is respectively set in one end of the first shell and the second shell
Ball pad is not set.
Preferably, the direction of the support component setting is consistent with the direction of rotation of sphere.
Preferably, the support component is fusiformis body.
Preferably, the second groove is arranged along sphere direction of rotation in the support component surface.
Preferably, the first shell inner wall is arranged circumferentially fixed part, and the engaging support member is opened up on the fixed part
The third groove of part.
Preferably, the expansion block is made of the raw material of following parts by weight：
45-60 parts of acrylic rubber, 32-45 parts of high density polyethylene (HDPE), 18-25 parts of polyurethane rubber, glass fibre 10-
20 parts, 5-10 parts of expansion type flame retardant, 15-30 parts of dioctyl phthalate, 1-1.5 parts of antioxidant CA, peroxidating two
5-10 parts of 4-8 parts of isopropylbenzene and titanate coupling agent.
Preferably, the expansion type flame retardant is expansion type flame retardant PDSPB.
Positive beneficial effect of the present invention：
1. the present invention includes first shell, sphere and axis body, the first shell includes the first accommodating space and tube body,
First accommodating space is set to inside the first shell and both ends are connected to outside, and the tube body is set to the first shell
Top surface, and be connected to first accommodating space；The sphere is located in first accommodating space, and the two of the sphere
The end setting through-hole logical with outside two, the top of the sphere are equipped with the first groove, and first groove corresponds to the tube body；Institute
The blocking part of axis body one end setting and first fit depressions is stated, the blocking part is hubbed in the tube body；Described
The side of one shell also sets up second shell, and the second shell includes the second accommodating space, and second accommodating space is set to
Inside the second shell and both ends are connected to outside, first accommodating space and the connection of the second accommodating space, and described second
Inner walls are arranged circumferentially one week expansion block, the first shell inner wall be arranged circumferentially two weeks it is symmetrical about sphere maximum gauge face
Support component, the sphere outer wall is resisted against on the support component, the contact of the support component and first shell inner wall
Area is more than the contact area of support component and sphere, and compared with prior art, the support component of technical solution of the present invention is by one
It is improved to two weeks positioned at sphere equatorial positions in week and symmetrical about sphere maximum gauge face positioned at equator, it is red to solve sphere
Road position support component to the instability problem of ball support, two weeks support components of the invention during sphere rotates,
Stable rotation can be provided to sphere to support, especially the process of the liquid opening and closing of high pressure, the stress of sphere is to be more uniformly distributed
, ball pad service life can be increased substantially.The contact area of the support component and first shell inner wall is more than support component
With the contact area of sphere, on the one hand down big up small structure can increase the stabilization that support component is contacted with first shell inner wall
Property, the frictional force of support component and sphere on the other hand can be effectively reduced in the case of uniform pressure.The expansion block
With fire can deformation expansion, completely cut off the circulation of high temperature fluid, have the function that fire-retardant
2. gradually-reducing shape neck, the neck is respectively set in one end of first shell of the present invention and the second shell
Ball pad is respectively set, improves flexible support for sphere, improves the service life and sealing performance of sphere.The support component is set
The direction set is consistent with the direction of rotation of sphere, solves under the conditions of uniform pressure and frictional force is larger in the case that direction is inconsistent
The problem of, improve the stability that support component is contacted with first shell inner wall.The support component is fusiformis body, utilizes the shape of fish
Body characteristics principle, fusiformis support component are smaller to the resistance of sphere, ball valve easy to operation.It is revolved along sphere on the support component surface
Turn direction and the second groove is set, further reduces the frictional force of sphere and first shell, also improve sphere and support component
Contact stabilization, substantially increase the service life of ball valve.The first shell inner wall is arranged circumferentially fixed part, the fixation
The third groove for engaging the support component is opened up in portion, the fixation support component that can more stablize.
4. acrylic rubber of the present invention is a kind of crystalline polymer of compound with regular structure, light, mechanical performance is good
Good, heat resistance is good；High density polyethylene (HDPE) is nontoxic, tasteless, odorless white particle, has good heat resistance, chemistry
Stability is good, also has higher rigidity and toughness, mechanical strength good；Polyurethane rubber has hardness height, intensity good, high-elastic
The advantages that property, high-wearing feature, tear-resistant, ageing-resistant, resistance to ozone, radiation hardness and good electric conductivity, three, which shares, keeps product exhausted
Edge resin combination has excellent mechanical property and heat resistance；Glassfiber insulation is good, heat resistance is strong, corrosion resistance
Good, high mechanical strength is shared with above-mentioned macromolecule resin, improves the high temperature resistance of expansion block.Expansion type flame retardant is poly-
One layer of fluffy carbonaceous froth bed for having hole enclosed construction can be formed on surface when closing object burning, can weakened between polymer and heat source
Heat passes, and expansion type flame retardant is added in various raw materials, is contacted with sphere closely after making expansion block high-temperature expansion, barrier fluid
Flowing, the expansion block hardness of fire-proof ball valve of the present invention, tensile strength, tearing toughness are high, high temperature resistant, therefore, present invention expansion
It is good to pad fire protecting performance.
Description of the drawings
Fig. 1 is the structural schematic diagram of 1 fire-proof ball valve of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of 1 second shell of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of 1 support component of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of 2 first shell of the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of 2 support component of the embodiment of the present invention；
Fig. 6 is 3 first shell structural schematic diagram of the embodiment of the present invention；
Fig. 7 is the structural schematic diagram of 3 support component of the embodiment of the present invention；
Fig. 8 is the structural schematic diagram of 4 support component of the embodiment of the present invention；
Fig. 9 is the structural schematic diagram of 5 support component of the embodiment of the present invention；
Figure 10 is the structural schematic diagram of 5 fixed part of the embodiment of the present invention；
In figure：1- first shells, 2- spheres, 3- axis bodies, the first accommodating spaces of 4-, 5- tube bodies, 6- through-holes, 7- first are recessed
Slot, 8- blocking parts, 9- second shells, the second accommodating spaces of 10-, 11- necks, 12- ball pads, 13- support components, 14- are fixed
Portion, the second grooves of 15-, 16- third grooves, 17- expansion blocks.
Specific implementation mode
With reference to some specific embodiments, the present invention is further described.
Embodiment 1
Referring to Fig. 1-3, a kind of fire-proof ball valve, including first shell 1, sphere 2 and axis body 3, the first shell 1 includes the
One accommodating space 4 and tube body 5, first accommodating space 4 is set to 1 inside of the first shell and both ends are connected to outside, institute
It states tube body 5 and is set to the top surface of the first shell 1, and be connected to first accommodating space 4；The sphere 2 is located in described
In first accommodating space 1, the both ends setting of the sphere 2 is equipped with first with external two logical through-hole 6, the top of the sphere 2
Groove 7, first groove 7 correspond to the tube body 5；3 one end of the axis body is arranged and first groove, 7 matched clip
Portion 8, the blocking part 8 are hubbed in the tube body 5；The side of the first shell 1 also sets up second shell 9, and described second
Shell 9 includes the second accommodating space 10, and second accommodating space 10 is set to 9 inside of the second shell and both ends connect with outside
Logical, first accommodating space 4 is connected to the second accommodating space 10, and 9 inner wall of the second shell is arranged circumferentially one week expansion block
17, gradually-reducing shape neck 11 is respectively set in one end of the first shell 1 and the second shell 9, and the neck 11 is respectively set
Ball pad 12,1 inner wall of the first shell are arranged circumferentially two weeks about the symmetrical support component 13 in 2 maximum gauge face of sphere, described
2 outer wall of sphere is resisted against on the support component 13, and each support component 13 is equal at a distance from the centre of sphere of sphere 2, institute
State the contact area that support component 13 is more than support component 13 and sphere 2 with the contact area of 1 inner wall of first shell.
The expansion block is made of the raw material of following parts by weight：
45 parts of acrylic rubber, 32 parts of high density polyethylene (HDPE), 18 parts of polyurethane rubber, 10 parts of glass fibre, intumescent
5 parts of fire retardant PDSPB, 15 parts of dioctyl phthalate, 1 part of antioxidant CA, 4 parts of cumyl peroxide and titanate esters
5 parts of coupling agent.
The expansion block preparation method includes the following steps：Above-mentioned various raw materials are kneaded in mixer first, then
It is sent into double screw extruder to squeeze to molten condition, the finally injection molding in injection molding machine.
Embodiment 2
Referring to Fig. 4 and Fig. 5, a kind of fire-proof ball valve, including first shell 1, sphere 2 and axis body 3, the first shell 1 are wrapped
The first accommodating space 4 and tube body 5 are included, first accommodating space 4 is set to 1 inside of the first shell and both ends connect with outside
Logical, the tube body 5 is set to the top surface of the first shell 1, and is connected to first accommodating space 4；The sphere 2 is located in
In first accommodating space 1, the both ends setting of the sphere 2 and external two logical through-hole 6, the top of the sphere 2 is equipped with
First groove 7, first groove 7 correspond to the tube body 5；The setting of 3 one end of the axis body is matched with first groove 7
Blocking part 8, the blocking part 8 are hubbed in the tube body 5；The side of the first shell 1 also sets up second shell 9, described
Second shell 9 includes the second accommodating space 10, and second accommodating space 10 is set on 9 inside of the second shell and both ends and outside
Portion is connected to, and first accommodating space 4 is connected to the second accommodating space 10,9 inner wall of the second shell be arranged circumferentially one week it is swollen
Gradually-reducing shape neck 11 is respectively set in one end of swollen pad 17, the first shell 1 and the second shell 9, and the neck 11 is distinguished
Ball pad 12 is set, 1 inner wall of the first shell is arranged circumferentially two weeks about the symmetrical support component 13 in 2 maximum gauge face of sphere,
2 outer wall of the sphere is resisted against on the support component 13, each support component 13 phase at a distance from the centre of sphere of sphere 2
It is more than the contact area of support component 13 and sphere 2, institute with the contact area of 1 inner wall of first shell Deng, the support component 13
The direction for stating the setting of support component 13 is consistent with the direction of rotation of sphere 2.
The expansion block is made of the raw material of following parts by weight：
46 parts of acrylic rubber, 35 parts of high density polyethylene (HDPE), 19 parts of polyurethane rubber, 12 parts of glass fibre, intumescent
6 parts of fire retardant PDSPB, 16 parts of dioctyl phthalate, 1.1 parts of antioxidant CA, 5 parts of cumyl peroxide and metatitanic acid
6 parts of ester coupling agent.
The expansion block preparation method includes the following steps：Above-mentioned various raw materials are kneaded in mixer first, then
It is sent into double screw extruder to squeeze to molten condition, the finally injection molding in injection molding machine.
Embodiment 3
Referring to Fig. 6 and 7, a kind of fire-proof ball valve, including first shell 1, sphere 2 and axis body 3, the first shell 1 include
First accommodating space 4 and tube body 5, first accommodating space 4 is set to 1 inside of the first shell and both ends are connected to outside,
The tube body 5 is set to the top surface of the first shell 1, and is connected to first accommodating space 4；The sphere 2 is located in institute
It states in the first accommodating space 1, the both ends of the sphere 2 setting through-hole 6 logical with outside two, the top of the sphere 2 is equipped with the
One groove 7, first groove 7 correspond to the tube body 5；3 one end of the axis body is arranged and first groove, 7 matched card
Tug portion 8, the blocking part 8 are hubbed in the tube body 5；The side of the first shell 1 also sets up second shell 9, and described
Two shells 9 include the second accommodating space 10, and second accommodating space 10 is set on 9 inside of the second shell and both ends and outside
Connection, first accommodating space 4 are connected to the second accommodating space 10, and 9 inner wall of the second shell, which is arranged circumferentially one week, to be expanded
Gradually-reducing shape neck 11 is respectively set in one end of pad 17, the first shell 1 and the second shell 9, and the neck 11 is set respectively
Place pad 12,1 inner wall of the first shell are arranged circumferentially two weeks about the symmetrical support component 13 in 2 maximum gauge face of sphere, institute
2 outer wall of sphere to be stated to be resisted against on the support component 13, each support component 13 is equal at a distance from the centre of sphere of sphere 2,
The support component 13 is more than the contact area of support component 13 and sphere 2, the branch with the contact area of 1 inner wall of first shell
It is consistent with the direction of rotation of sphere 2 to support the direction that element 13 is arranged, the support component 13 is fusiformis body.
The expansion block is made of the raw material of following parts by weight：
50 parts of acrylic rubber, 40 parts of high density polyethylene (HDPE), 20 parts of polyurethane rubber, 15 parts of glass fibre, intumescent
8 parts of fire retardant PDSPB, 20 parts of dioctyl phthalate, 1.2 parts of antioxidant CA, 6 parts of cumyl peroxide and metatitanic acid
7 parts of ester coupling agent.
The expansion block preparation method includes the following steps：Above-mentioned various raw materials are kneaded in mixer first, then
It is sent into double screw extruder to squeeze to molten condition, the finally injection molding in injection molding machine.
Embodiment 4
Referring to Fig. 8, a kind of fire-proof ball valve, including first shell 1, sphere 2 and axis body 3, the first shell 1 include first
Accommodating space 4 and tube body 5, first accommodating space 4 is set to 1 inside of the first shell and both ends are connected to outside, described
Tube body 5 is set to the top surface of the first shell 1, and is connected to first accommodating space 4；The sphere 2 is located in described
In one accommodating space 1, the both ends setting of the sphere 2 and external two logical through-hole 6, the top of the sphere 2 are recessed equipped with first
Slot 7, first groove 7 correspond to the tube body 5；3 one end of the axis body is arranged and first groove, 7 matched blocking part
8, the blocking part 8 is hubbed in the tube body 5；The side of the first shell 1 also sets up second shell 9, the second shell
Body 9 includes the second accommodating space 10, and second accommodating space 10 is set to 9 inside of the second shell and both ends connect with outside
Logical, first accommodating space 4 is connected to the second accommodating space 10, and 9 inner wall of the second shell is arranged circumferentially one week expansion block
17, gradually-reducing shape neck 11 is respectively set in the first shell 1 and one end of the second shell 9, and the neck 11 is respectively set
Ball pad 12,1 inner wall of first shell are arranged circumferentially two weeks about the symmetrical support component 13 in 2 maximum gauge face of sphere,
2 outer wall of the sphere is resisted against on the support component 13, each support component 13 phase at a distance from the centre of sphere of sphere 2
It is more than the contact area of support component 13 and sphere 2, institute with the contact area of 1 inner wall of first shell Deng, the support component 13
The direction for stating the setting of support component 13 is consistent with the direction of rotation of sphere 2, and the support component 13 is fusiformis body, the support member
13 surface of part opens up the second groove 15 along 2 direction of rotation of sphere.
The expansion block is made of the raw material of following parts by weight：
52 parts of acrylic rubber, 41 parts of high density polyethylene (HDPE), 21 parts of polyurethane rubber, 16 parts of glass fibre, intumescent
9 parts of fire retardant PDSPB, 23 parts of dioctyl phthalate, 1.3 parts of antioxidant CA, 6.5 parts of cumyl peroxide and titanium
8 parts of acid esters coupling agent.
The expansion block preparation method includes the following steps：Above-mentioned various raw materials are kneaded in mixer first, then
It is sent into double screw extruder to squeeze to molten condition, the finally injection molding in injection molding machine.
Embodiment 5
Referring to Fig. 9 and Figure 10, a kind of fire-proof ball valve, including first shell 1, sphere 2 and axis body 3, the first shell 1 are wrapped
The first accommodating space 4 and tube body 5 are included, first accommodating space 4 is set to 1 inside of the first shell and both ends connect with outside
Logical, the tube body 5 is set to the top surface of the first shell 1, and is connected to first accommodating space 4；The sphere 2 is located in
In first accommodating space 1, the both ends setting of the sphere 2 and external two logical through-hole 6, the top of the sphere 2 is equipped with
First groove 7, first groove 7 correspond to the tube body 5；The setting of 3 one end of the axis body is matched with first groove 7
Blocking part 8, the blocking part 8 are hubbed in the tube body 5；The side of the first shell 1 also sets up second shell 9, described
Second shell 9 includes the second accommodating space 10, and second accommodating space 10 is set on 9 inside of the second shell and both ends and outside
Portion is connected to, and first accommodating space 4 is connected to the second accommodating space 10,9 inner wall of the second shell be arranged circumferentially one week it is swollen
Gradually-reducing shape neck 11 is respectively set in one end of swollen pad 17, the first shell 1 and the second shell 9, and the neck 11 is distinguished
Ball pad 12 is set, and 1 inner wall of the first shell is arranged circumferentially the fixed part 14 of fixed support component 13, is opened on the fixed part 14
If engaging the third groove 16 of the support component 13,1 inner wall of the first shell be arranged circumferentially two weeks it is maximum straight about sphere 2
The symmetrical support component 13 of diametric plane, 2 outer wall of the sphere are resisted against on the support component 13, each support component 13 with
The distance of the centre of sphere of sphere 2 is equal, the contact area of the support component 13 and 1 inner wall of first shell be more than support component 13 with
The contact area of sphere 2, the direction that the support component 13 is arranged is consistent with the direction of rotation of sphere 2, the support component 13
For fusiformis body, 13 surface of the support component opens up the second groove 15 along 2 direction of rotation of sphere.
The expansion block is made of the raw material of following parts by weight：
55 parts of acrylic rubber, 43 parts of high density polyethylene (HDPE), 24 parts of polyurethane rubber, 18 parts of glass fibre, intumescent
9.5 parts of fire retardant PDSPB, 26 parts of dioctyl phthalate, 1.4 parts of antioxidant CA, 7 parts of cumyl peroxide and titanium
9 parts of acid esters coupling agent.
The expansion block preparation method includes the following steps：Above-mentioned various raw materials are kneaded in mixer first, then
It is sent into double screw extruder to squeeze to molten condition, the finally injection molding in injection molding machine.
Embodiment 6
The present embodiment fire-proof ball valve structure is similar to Example 5, and something in common does not repeat, and somewhat different is：It is described swollen
Swollen pad is made of the raw material of following parts by weight：
60 parts of acrylic rubber, 45 parts of high density polyethylene (HDPE), 25 parts of polyurethane rubber, 20 parts of glass fibre, intumescent
10 parts of fire retardant PDSPB, 30 parts of dioctyl phthalate, 1.5 parts of antioxidant CA, 8 parts of cumyl peroxide and metatitanic acid
10 parts of ester coupling agent.
The expansion block preparation method includes the following steps：Above-mentioned various raw materials are kneaded in mixer first, then
It is sent into double screw extruder to squeeze to molten condition, the finally injection molding in injection molding machine.
Performance detection
The expansion block performance of 1-6 fire-proof ball valves of the embodiment of the present invention is detected, testing result is shown in Table 1.
The expansion block performance test results of 1 1-6 fire-proof ball valves of the embodiment of the present invention of table
As shown in Table 1, the expansion block hardness, tensile strength of the fire-proof ball valve of 1-6 of the embodiment of the present invention, tearing toughness
Height, high temperature resistant, therefore, expansion block fire protecting performance of the present invention are good.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical scheme of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.
Claims (7)
1. a kind of fire-proof ball valve, including first shell, sphere and axis body, the first shell includes the first accommodating space and pipe
Body, first accommodating space is set to inside the first shell and both ends are connected to outside, and the tube body is set to described first
The top surface of shell, and be connected to first accommodating space；The sphere is located in first accommodating space, the sphere
The both ends setting through-hole logical with outside two, the top of the sphere is equipped with the first groove, and first groove corresponds to the pipe
Body；The blocking part of axis body one end setting and first fit depressions, the blocking part are hubbed in the tube body；Institute
The side for stating first shell also sets up second shell, and the second shell includes the second accommodating space, second accommodating space
Inside the second shell and both ends are connected to outside, first accommodating space and the connection of the second accommodating space, special
Sign is that the second shell inner wall is arranged circumferentially one week expansion block, and the first shell inner wall is arranged circumferentially two weeks about ball
The symmetrical support component in body maximum gauge face, the sphere outer wall are resisted against on the support component, the support component and
The contact area of one inner walls is more than the contact area of support component and sphere；
The expansion block is made of the raw material of following parts by weight：45-60 parts of acrylic rubber, high density polyethylene (HDPE) 32-45
Part, 18-25 parts of polyurethane rubber, 10-20 parts of glass fibre, 5-10 parts of expansion type flame retardant, dioctyl phthalate 15-30
5-10 parts of part, 1-1.5 parts of antioxidant CA, 4-8 parts of cumyl peroxide and titanate coupling agent.
2. fire-proof ball valve according to claim 1, which is characterized in that one end of the first shell and the second shell
Gradually-reducing shape neck is respectively set, ball pad is respectively set in the neck.
3. fire-proof ball valve according to claim 1 or 2, which is characterized in that the direction of the support component setting and ball
The direction of rotation of body is consistent.
4. fire-proof ball valve according to claim 3, which is characterized in that the support component is fusiformis body.
5. fire-proof ball valve according to claim 4, which is characterized in that the support component surface is set along sphere direction of rotation
Set the second groove.
6. according to the fire-proof ball valve described in claim 1,2,4 or 5, which is characterized in that the first shell inner wall circumferential direction is set
Fixed part is set, the third groove for engaging the support component is opened up on the fixed part.
7. fire-proof ball valve according to claim 1, which is characterized in that the expansion type flame retardant is expansion type flame retardant
PDSPB。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610646132.0A CN106195311B (en) | 2016-08-09 | 2016-08-09 | A kind of fire-proof ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610646132.0A CN106195311B (en) | 2016-08-09 | 2016-08-09 | A kind of fire-proof ball valve |
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| CN106195311A CN106195311A (en) | 2016-12-07 |
| CN106195311B true CN106195311B (en) | 2018-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610646132.0A Active CN106195311B (en) | 2016-08-09 | 2016-08-09 | A kind of fire-proof ball valve |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1626213A1 (en) * | 2002-01-18 | 2006-02-15 | Swagelok Company | Ball valve with single piece packing |
| CN201487284U (en) * | 2009-07-10 | 2010-05-26 | 范宏 | Novel fireproof ball valve |
| EP2414711A1 (en) * | 2010-03-31 | 2012-02-08 | Worldwide Oilfield Machine, Inc. | Valve stem assembly for rotary valve and method |
| CN203743486U (en) * | 2014-03-15 | 2014-07-30 | 永嘉县新然阀门有限公司 | Ball valve |
| CN205001550U (en) * | 2015-09-11 | 2016-01-27 | 松鼎工业股份有限公司 | Ball valve improved structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4166072B2 (en) * | 2002-10-25 | 2008-10-15 | 新和産業株式会社 | Gas cock |
-
2016
- 2016-08-09 CN CN201610646132.0A patent/CN106195311B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1626213A1 (en) * | 2002-01-18 | 2006-02-15 | Swagelok Company | Ball valve with single piece packing |
| CN201487284U (en) * | 2009-07-10 | 2010-05-26 | 范宏 | Novel fireproof ball valve |
| EP2414711A1 (en) * | 2010-03-31 | 2012-02-08 | Worldwide Oilfield Machine, Inc. | Valve stem assembly for rotary valve and method |
| CN203743486U (en) * | 2014-03-15 | 2014-07-30 | 永嘉县新然阀门有限公司 | Ball valve |
| CN205001550U (en) * | 2015-09-11 | 2016-01-27 | 松鼎工业股份有限公司 | Ball valve improved structure |
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| Publication number | Publication date |
|---|---|
| CN106195311A (en) | 2016-12-07 |
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