CN204083318U - Fire-fighting ball valve - Google Patents
Fire-fighting ball valve Download PDFInfo
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- CN204083318U CN204083318U CN201420395260.9U CN201420395260U CN204083318U CN 204083318 U CN204083318 U CN 204083318U CN 201420395260 U CN201420395260 U CN 201420395260U CN 204083318 U CN204083318 U CN 204083318U
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Abstract
The utility model relates to a kind of fire-fighting ball valve, comprise valve body, spheroid, valve seat, upper valve shaft and lower valve shaft, it is characterized in that: described valve seat is fixedly encapsulated in the lumen openings place of valve body by gland, valve seat comprises outer seat and interior valve seat, interior valve seat edge is located in outer seat, and outer seat adopts elastomeric material to make; Described interior valve seat inner end wall face seals to contact with the outer spherical surface of spheroid and coordinates, and outer seat outer surface coordinates with body cavity face seal, and outer seat exterior edge face contacts with gland seal and coordinates, and gland inwardly compresses outer seat, and gland is connected on valve body.The utility model structure is simple, and good seal performance, can reduce ball valve moment of torsion under the prerequisite not reducing sealing, thus reduces the holistic cost of ball valve, extends the working life of ball valve, has certain social effect and economic benefits.
Description
Technical field
The utility model relates to a kind of ball valve, and specifically a kind of fire-fighting ball valve, belongs to valve arrangement technical field.
Background technique
Ball valve is a kind of widely used valve arrangement, and it is widely used in every field such as oil, chemical industry, electric power, metallurgy and iron and steel.Ball valve is mainly used in cutting off, distributing and change media flow direction on pipeline.The open-shut device of ball valve is a spheroid, and ball valve utilizes spheroid around the object of the axis 90-degree rotation realization opening and closing of valve shaft.The sealing of existing ball valve realizes sealing by spheroid extruding valve seat, but the material hardness of existing valve seat is high and rebound elasticity is poor, in order to the sealing realizing valve must could seal by intensifying valve magnitude of interference, cause valve torque large like this, the holistic cost of valve is increased, and causes the working life of valve shorter.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of fire-fighting ball valve is provided, its structure is simple, good seal performance, ball valve moment of torsion can be reduced under the prerequisite not reducing sealing, thus reduce the holistic cost of ball valve, extend the working life of ball valve, there are certain social effect and economic benefits.
Technological scheme according to the utility model provides: fire-fighting ball valve, comprises valve body, spheroid, valve seat, upper valve shaft and lower valve shaft, and described upper valve shaft is arranged on body top, and described lower valve shaft is arranged on body base, and upper valve shaft is coaxial with lower valve shaft; Described spheroid is loaded in body cavity, and spheroid upper end is connected with upper valve shaft, and spheroid lower end is connected with lower valve shaft; Respectively arrange a valve seat at the lumen openings place, both sides of valve body, two valve seats are symmetrical and be disposed coaxially on the both sides of spheroid, and valve seat coordinates with ball seal; It is characterized in that: described valve seat is fixedly encapsulated in the lumen openings place of valve body by gland, valve seat comprises outer seat and interior valve seat, and interior valve seat edge is located in outer seat, and outer seat adopts elastomeric material to make; Described interior valve seat inner end wall face seals to contact with the outer spherical surface of spheroid and coordinates, and outer seat outer surface coordinates with body cavity face seal, and outer seat exterior edge face contacts with gland seal and coordinates, and gland inwardly compresses outer seat, and gland is connected on valve body.
As further improvement of the utility model, described outer seat is connected with valve body by the hexagon socket cap head screw of rotatable adjustment, and outer seat exterior edge face exceeds valve body junction surface.
As further improvement of the utility model, described elastomeric material comprises ethylene propylene diene rubber, nitrile butadiene rubber, natural rubber, butyl rubber, fluorine rubber, silicone rubber, urethane rubber, neoprene, polyethylene, poly-third ethene, styrene butadiene rubber, chlorosulfonated polyethylene rubber, Thiokol, chlorohydrin rubber, acrylate rubber, butadiene rubber, isoprene rubber.
As further improvement of the utility model, described interior valve seat adopts polytetrafluoroethylmaterial material to make.
As further improvement of the utility model, described upper valve shaft upper end is provided with handle.
As further improvement of the utility model, described upper valve shaft upper end is provided with square shaft head, and described handle one end is provided with square hole, and square shaft head is connected with square hole and passes through to be with the fastening screw trip bolt of elastic washer fastening.
As further improvement of the utility model, described upper valve shaft to be arranged on valve body by sleeve supporting and by the spacing encapsulation of position-arresting disk, to be provided with seal ring and O type circle between upper valve shaft and axle sleeve.
As further improvement of the utility model, described upper valve shaft lower end is provided with homalocephalus, and described spheroid top is provided with flat groove, and homalocephalus coordinates with flat groove inlay card.
As further improvement of the utility model, described lower valve shaft is provided with screw thread with the linkage section of valve body, and lower valve shaft is connected with valve body screw thread, and lower valve shaft is equipped with lower seal, and lower seal is crushed between lower valve shaft and valve body.
compared with prior art, tool has the following advantages the utility model:interior valve seat in the utility model is embedded in outer seat, namely in, valve seat is used the outer seat that elastomeric material makes and envelopes, valve seal can be realized like this by compression outer seat, valve torque can be reduced, and regulating valve torque can be carried out by the impacting force suffered by adjustment outer seat, make the sealing of valve more safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in the figure: the fire-fighting ball valve in embodiment is formed primarily of component such as handle 1, elastic washer 2, fastening screw trip bolt 3, upper valve shaft 4, position-arresting disk 5, axle sleeve 6, O type circle 7, valve body 8, gland 9, outer seat 10, interior valve seat 11, lower seal 12, lower valve shaft 13, ball core 14 and upper seal rings 15.
As shown in Figure 1, described upper valve shaft 4 is arranged on valve body 8 top, and described lower valve shaft 13 is arranged on bottom valve body 8, and upper valve shaft 4 is coaxial with lower valve shaft 13; Described spheroid 14 is loaded in valve body 8 inner chamber, and spheroid 14 upper end is connected with upper valve shaft 4, and spheroid 14 lower end is connected with lower valve shaft 13; Respectively arrange a valve seat at the lumen openings place, both sides of valve body 8 and respectively by the fixing encapsulation of gland 9, two valve seats are symmetrical and be disposed coaxially on the both sides of spheroid 14, and valve seat and spheroid 14 are sealed and matched; Described valve seat forms primarily of outer seat 10 and interior valve seat 11, and interior valve seat 11 edge is located in outer seat 10, and outer seat 10 adopts elastomeric material to make; The inner wall of described interior valve seat 11 seals to contact with the outer spherical surface of spheroid 14 and coordinates, outer seat 10 outer surface and valve body 8 surface of internal cavity are sealed and matched, outer seat 10 exterior edge face seals to contact with gland 9 and coordinates, and gland 9 inwardly compresses outer seat 10, and gland 9 is connected on valve body 8.
As shown in Figure 1, in the utility model embodiment, described outer seat 10 is connected with valve body 8 by the hexagon socket cap head screw of rotatable adjustment, and outer seat 10 exterior edge face exceeds valve body 8 junction surface.Like this because outer seat 10 adopts the elastomeric material with favorable elasticity to make, gland 9 can extrude outer seat 10 and produce elastic strain, interior valve seat 11 is contacted with ball core preferably coordinate, produce good sealing effect, and the tightness of hexagon socket cap head screw can be regulated to adjust the impacting force of gland 9 pairs of outer seats 10 and interior valve seat 11 by turn, thus regulate ball valve torque well.
In the utility model, the elastomeric material making outer seat 10 comprises ethylene propylene diene rubber, nitrile butadiene rubber, natural rubber, butyl rubber, fluorine rubber, silicone rubber, urethane rubber, neoprene, polyethylene, poly-third ethene, styrene butadiene rubber, chlorosulfonated polyethylene rubber, Thiokol, chlorohydrin rubber, acrylate rubber, butadiene rubber, isoprene rubber.
Described interior valve seat 11 adopts polytetrafluoroethylmaterial material to make.
As shown in Figure 1, fire-fighting ball valve of the present utility model is the manual form adopting handle 1 to drive, and handle 1 is arranged in upper valve shaft 4 upper end, is adjusted the position at ball core cylindrical hole place by Joystick 1, thus controls the opening and closing of fire-fighting ball valve.
As shown in Figure 1, described upper valve shaft 4 upper end is provided with square shaft head, and described handle 1 one end is provided with square hole, and square shaft head is connected with square hole and passes through to be with the fastening screw trip bolt 3 of elastic washer 2 fastening.Described upper valve shaft 4 to be arranged on valve body 8 by axle sleeve 6 supporting and by the spacing encapsulation of position-arresting disk 5, seal ring 15 and O type circle 7 is provided with between upper valve shaft 4 and axle sleeve 6, upper seal ring 15 and O type circle 7 provide sealing for fire-fighting ball valve, both can prevent dust etc. from entering and water also can be stoped to overflow.Described upper valve shaft 4 lower end is provided with homalocephalus, and described spheroid 14 top is provided with flat groove, and homalocephalus coordinates with flat groove inlay card.
As shown in Figure 1, described lower valve shaft 13 is provided with screw thread with the linkage section of valve body 8, lower valve shaft 13 is threaded with valve body 8, lower seal 12 lower valve shaft 13 is equipped with, lower seal 12 is crushed between lower valve shaft 13 and valve body 8, lower seal 12 provides another road to seal for fire-fighting ball valve, both can prevent dust etc. from entering and water also can be stoped to overflow.
Claims (8)
1. fire-fighting ball valve, comprise valve body (8), spheroid (14), valve seat, upper valve shaft (4) and lower valve shaft (13), described upper valve shaft (4) is arranged on valve body (8) top, and described lower valve shaft (13) is arranged on valve body (8) bottom, and upper valve shaft (4) is coaxial with lower valve shaft (13); Described spheroid (14) is loaded in valve body (8) inner chamber, and spheroid (14) upper end is connected with upper valve shaft (4), and spheroid (14) lower end is connected with lower valve shaft (13); Respectively arrange a valve seat at the lumen openings place, both sides of valve body (8), two valve seats are symmetrical and be disposed coaxially on the both sides of spheroid (14), and valve seat and spheroid (14) are sealed and matched; It is characterized in that: described valve seat is fixedly encapsulated in the lumen openings place of valve body (8) by gland (9), valve seat comprises outer seat (10) and interior valve seat (11), interior valve seat (11) edge is located in outer seat (10), and outer seat (10) adopts elastomeric material to make; The inner wall of described interior valve seat (11) seals to contact with the outer spherical surface of spheroid (14) and coordinates, outer seat (10) outer surface and valve body (8) surface of internal cavity are sealed and matched, outer seat (10) exterior edge face seals to contact with gland (9) and coordinates, gland (9) inwardly compresses outer seat (10), and gland (9) is connected on valve body (8).
2. fire-fighting ball valve as claimed in claim 1, is characterized in that: described outer seat (10) is connected with valve body (8) by the hexagon socket cap head screw of rotatable adjustment, and outer seat (10) exterior edge face exceeds valve body (8) junction surface.
3. fire-fighting ball valve as claimed in claim 1, is characterized in that: described interior valve seat (11) adopts polytetrafluoroethylmaterial material to make.
4. fire-fighting ball valve as claimed in claim 1, is characterized in that: described upper valve shaft (4) upper end is provided with handle (1).
5. fire-fighting ball valve as claimed in claim 4, it is characterized in that: described upper valve shaft (4) upper end is provided with square shaft head, and described handle (1) one end is provided with square hole, square shaft head is connected with square hole and passes through to be with the fastening screw trip bolt of elastic washer (2) (3) fastening.
6. fire-fighting ball valve as claimed in claim 1, it is characterized in that: described upper valve shaft (4) is arranged on valve body (8) by axle sleeve (6) supporting and goes up and pass through position-arresting disk (5) spacing encapsulation, is provided with seal ring (15) and O type circle (7) between upper valve shaft (4) and axle sleeve (6).
7. fire-fighting ball valve as claimed in claim 1, is characterized in that: described upper valve shaft (4) lower end is provided with homalocephalus, and described spheroid (14) top is provided with flat groove, and homalocephalus coordinates with flat groove inlay card.
8. fire-fighting ball valve as claimed in claim 1, it is characterized in that: described lower valve shaft (13) linkage section that is upper and valve body (8) is provided with screw thread, lower valve shaft (13) is threaded with valve body (8), lower valve shaft (13) is equipped with lower seal (12), lower seal (12) is crushed between lower valve shaft (13) and valve body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420395260.9U CN204083318U (en) | 2014-07-16 | 2014-07-16 | Fire-fighting ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420395260.9U CN204083318U (en) | 2014-07-16 | 2014-07-16 | Fire-fighting ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204083318U true CN204083318U (en) | 2015-01-07 |
Family
ID=52176039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420395260.9U Active CN204083318U (en) | 2014-07-16 | 2014-07-16 | Fire-fighting ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204083318U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104740811A (en) * | 2015-03-04 | 2015-07-01 | 芜湖恒威车辆装备科技有限公司 | Fire-fighting foam nozzle |
-
2014
- 2014-07-16 CN CN201420395260.9U patent/CN204083318U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104740811A (en) * | 2015-03-04 | 2015-07-01 | 芜湖恒威车辆装备科技有限公司 | Fire-fighting foam nozzle |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |