CN205896294U - Fire -proof check valve - Google Patents
Fire -proof check valve Download PDFInfo
- Publication number
- CN205896294U CN205896294U CN201620861668.XU CN201620861668U CN205896294U CN 205896294 U CN205896294 U CN 205896294U CN 201620861668 U CN201620861668 U CN 201620861668U CN 205896294 U CN205896294 U CN 205896294U
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- CN
- China
- Prior art keywords
- connecting rod
- fire
- valve
- check valve
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model relates to a fire -proof check valve has solved the connecting rod and has easily followed the problem of the axial direction run -off the straight of pivot. A fire -proof check valve, includes body, valve block, pivot, coupling mechanism and an elastic element, the body is equipped with the gas vent, the valve block lid is established on the gas vent, the pivot with this body coupling, the pivot with the valve block passes through coupling mechanism connects, elastic element drive coupling mechanism winds the pivot is rotated, in order to keep the valve block is closed the trend of gas vent, coupling mechanism includes the connecting rod and fixes axle sleeve on the connecting rod, the connecting rod with the valve block is connected, the axle sleeve cover is in in the pivot, and the pivot with sleeve screw thread connects.
Description
Technical field
The utility model is related to a kind of fire-preventing check valve.
Background technology
Fire-preventing check valve includes valve body, valve block, torsion spring and connecting rod, and valve body has air inlet and air outlet, and valve block lid is located at
On air outlet, connecting rod one end is rotated with valve body and is connected, and the connecting rod other end is rotated with valve block and is connected, when torsion spring drive link is relative to valve
When body rotates, valve block can close air outlet.
Existing connecting rod is provided with axis hole, and fire-preventing check valve also includes rotating shaft, and rotating shaft is fixed on valve body, runs through in rotating shaft
After axis hole, connecting rod can rotate around valve body；For limiting connecting rod along the scope of rotating shaft axially-movable, rotating shaft is socketed with two nuts,
Connecting rod is located between two nuts.However, connecting rod can extrude nut in the course of the work, and lead to the interval between two nuts
Distance is continuous to become big, and when the spacing distance between two nuts becomes big, connecting rod is easily along the axial direction run-off the straight of rotating shaft.
Content of the invention
Problem to be solved in the utility model is exactly to provide a kind of fire-preventing check valve, it is to avoid connecting rod is along the axial direction side of rotating shaft
To run-off the straight.
For solving the above problems, the utility model following technical scheme of offer:
A kind of fire-preventing check valve, including body, valve block, rotating shaft, bindiny mechanism and the first flexible member, described body is provided with
Exhaust outlet, described valve block lid is located on described exhaust outlet, and described rotating shaft is connected with described body, and described rotating shaft is led to described valve block
Cross described bindiny mechanism to connect, described first flexible member drives described bindiny mechanism around described axis of rotation, to keep described
Valve block closes the trend of described exhaust outlet, and described bindiny mechanism includes connecting rod and the axle sleeve being fixed on described connecting rod, described company
Bar is connected with described valve block, and described axle sleeve is enclosed within described rotating shaft, and described rotating shaft is connected with described sleeve thread.
Existing connecting rod is located between two nuts, and, wherein one nut of connecting rod side laminating, and connecting rod opposite side pastes
Close another nut, during connecting rod rotates around the axis, connecting rod produces sliding friction with nut, to realize reducing connecting rod edge
The angle of run-off the straight on rotating shaft axial direction.However, after fire-preventing check valve long-term work, connecting rod constantly extrudes nut, this
The spacing distance between two nuts can be led to constantly to become big, because connecting rod is connected with rotating shaft by its bottom, therefore, connecting rod exists
Can the direction of a nut thereto tilt under self gravitation effect, when spacing distance between two nuts becomes big, connecting rod
The angle tilting also can become big.
Axle sleeve is fixed with connecting rod of the present utility model, axle sleeve is enclosed within rotating shaft, when axle sleeve rotates around the axis, connecting rod with
Axle sleeve is relative to axis of rotation.Rotating shaft of the present utility model is connected with sleeve thread, when rotating shaft is connected with sleeve thread, rotating shaft with
Axle sleeve interference fit, to stop connecting rod along the axial direction run-off the straight of rotating shaft.
Additionally, when rotating shaft is connected with sleeve thread, fire-preventing check valve can cancel installation nut in rotating shaft.So set
Meter, simplifies the structure of fire-preventing check valve, the resistance being subject to during reducing link rotatable.
Further, described axle sleeve has axis hole, and described axis hole is the first screwed hole, and the axial direction of described first screwed hole is long
Degree is more than the thickness of described connecting rod.It is so designed that, increase the area of threadeding between axle sleeve and rotating shaft.
Further, described fire-preventing check valve also includes driving lever, fuse member and the second flexible member, described driving lever with described
Body rotates and connects, and described fuse member is fixing on the body, and the elastic force of described second flexible member is more than described first bullet
The elastic force of property element, described second flexible member one end is connected with described body, the described second flexible member other end with described
Driving lever is connected and drives described driving lever to be offseted with described fuse member.It is so designed that, when fuse member fuses, the second flexible member can
Driving lever opposing body is driven to rotate.
Further, described connecting rod is provided with, adjacent to one end of described axle sleeve, the block stretching out, described block with described
Angle between connecting rod is less than 90 °, and after described fuse member high temperature melting, described second flexible member drives described driving lever to extrude institute
State block, described block drives described connecting rod around described axis of rotation, to keep described valve block to close the trend of described exhaust outlet.
It is so designed that, fire-preventing check valve can close exhaust outlet under hyperbaric environment.
Further, described block includes the upper surface that can offset with described driving lever, and described upper surface is plane.So set
Meter, plane can be used for reducing driving lever and extrudes suffered frictional resistance during block.
Further, described block is provided with the projection stretching out, and described connecting rod, described upper surface and described projection surround
Stopper slot.When fuse member high temperature melting is had no progeny, stopper slot can avoid driving lever to separate with the upper surface of block.
Further, described connecting rod and described axle sleeve are connected as a single entity by welding.Be so designed that, increase connecting rod and axle sleeve it
Between bonding strength.
Further, described connecting rod is provided with the second screwed hole away from one end of described axle sleeve.
Further, described fire-preventing check valve also includes screw, and described rotating shaft is the bar portion of described screw.The specification of screw
Complete, therefore, when rotating shaft is the bar portion of screw, its versatility is good, purchase cost is low.
Further, described body includes valve body and the valve seat being fixed on described valve body, described rotating shaft and described valve seat
Connect.
Brief description
Fig. 1 is the structural representation of fire-preventing check valve in the utility model preferred embodiment；
Fig. 2 is the structural representation of bindiny mechanism in the utility model preferred embodiment；
Fig. 3 is the structural representation of driving lever in the utility model preferred embodiment.
Specific embodiment
Reference Fig. 1, a kind of fire-preventing check valve, including body, valve block, rotating shaft 31, bindiny mechanism and the first flexible member 4,
Body is provided with exhaust outlet, and valve block lid is located on exhaust outlet, and rotating shaft 31 is connected with body, and rotating shaft 31 is with valve block by bindiny mechanism even
Connect, 31 rotation around the shaft of the first flexible member 4 drive connection mechanism, to keep valve block to close the trend of exhaust outlet.
With reference to Fig. 1, the body of the present embodiment includes valve body and the valve seat 8 being fixed on valve body, and valve body is provided with wind-guiding and leads to
Road, air-guiding aisle has air inlet and air outlet, and described exhaust outlet is air outlet, and valve block lid is located at air outlet, valve seat 8 with lead
Wind passage is connected by screw adjacent to the side wall of air outlet.In other embodiment of the present utility model, described exhaust outlet be into
Air port, valve block lid is located at air inlet, and valve seat is connected as a single entity by welding adjacent to the side wall of air inlet with air-guiding aisle.
See figures.1.and.2, difference from prior art is: the bindiny mechanism of the present embodiment includes connecting rod 1 and fixes
Axle sleeve 2 on connecting rod 1, connecting rod 1 is connected with valve block, and axle sleeve 2 is enclosed within rotating shaft 31, and rotating shaft 31 is threadeded with axle sleeve 2.
Specifically: axle sleeve 2 has axis hole, described axis hole is the first screwed hole 21, and the axial length of the first screwed hole 21 is h1, connecting rod
1 thickness is h2, h1 ＞ h2, as h1 ＞ h2, can improve the area of threadeding of axle sleeve 2 and rotating shaft 31, to realize increasing even
Stability in bar 1 rotation process.Certainly, however not excluded that h1 ＜ h2 in other embodiment of the present utility model, or h1=
h2.
With reference to Fig. 1, fire-preventing check valve also includes screw, and the present embodiment is referred to as the first screw 3, rotating shaft for ease of distinguishing
31 is the bar portion of the first screw 3, and, the first screw 3 is threadeded with valve seat 8, to stop the first screw 3 opposite valve seat 8
Raw position is moved.In other embodiment of the present utility model, fire-preventing check valve also includes bolt, and rotating shaft is the bar portion of bolt,
And, bolt is fixed on valve seat by nut.
With reference to Fig. 1 and Fig. 3, the fire-preventing check valve of the present embodiment also includes driving lever 5, fuse member 6 and the second flexible member 7,
Driving lever 5 is rotated with body and is connected, and fuse member 6 is fixed on body, and the elastic force of the second flexible member 7 is more than the first flexible member 4
Elastic force, the second flexible member 7 one end is connected with body, and the second flexible member 7 other end is connected with driving lever 5 and drives driving lever 5
Offset with fuse member 6, specific: driving lever 5 includes the first linkage section 52, the second linkage section 53 and is used for connecting the first linkage section 52
With the drive section 51 of the second linkage section 53, the first linkage section 52 is provided with first rotating shaft 521, the second linkage section 53 is provided with
Second rotating shaft 531 concordant with first rotating shaft 521, valve seat 8 is provided with first through hole and the second through hole, when first rotating shaft 521 is inserted
Enter first through hole, and when the second through hole is inserted in the second rotating shaft 531, driving lever 5 can rotate around valve seat 8；Fuse member 6 passes through the first screw
3 are fixed on valve seat 8.In other embodiment of the present utility model, the first linkage section is provided with first through hole, the second linkage section
It is provided with the second through hole, valve seat is provided with first rotating shaft and second rotating shaft concordant with first rotating shaft, when first rotating shaft insertion the
One through hole, and when the second through hole is inserted in the second rotating shaft, driving lever can rotate around valve seat；Additionally, draw-in groove, fuse member are additionally provided with valve seat
In insertion draw-in groove, to be secured to valve seat.
See figures.1.and.2, the connecting rod 1 of the present embodiment is provided with the block 11 stretching out, block 11 adjacent to axle sleeve 2 one end
Angle and connecting rod 1 between is α, 90 ° of α ＜.After fuse member 6 high temperature melting, the second flexible member 7 drives driving lever 5 extruding block
11,31 rotation around the shaft of block 11 drivening rod 1, to keep valve block to close the trend of exhaust outlet, specific: the gear of the present embodiment
Block 11 includes upper surface 111, and drive section 51 includes lateral wall 511, and after fuse member 6 high temperature melting, the second flexible member 7 discharges bullet
Property potential energy to drive driving lever 5 to rotate around valve seat 8, in driving lever 5 in valve seat 8 rotation process, drive section 51 moves downward, with realize
The lateral wall 511 of drive section 51 extrudes the upper surface 111 of block 11, when the lateral wall 511 of drive section 51 extrudes the upper of block 11
During end face 111, block 11 can drivening rod 1 31 rotation around the shaft.
As shown in Fig. 2 the upper surface 111 of block 11 described in the present embodiment is plane, due to 90 ° of α ＜, therefore, work as valve block
When opening exhaust outlet, the upper surface 111 of block 11 is the plane being obliquely installed.It is so designed that it can be ensured that the driving lever 5 effectively company of ordering about
Bar 1 31 rotation around the shaft.
With reference to Fig. 2 and Fig. 3, the block 11 of the present embodiment is provided with the projection 12 stretching out, connecting rod 1, the upper end of block 11
Face 111 and raised 12 surrounds stopper slot 20, and drive section 51 insertion stopper slot 20 simultaneously extrudes upper surface 111, and now, raised 12 can keep away
Exempt from driving lever 5 rotational angle excessive, and lead to drive section 51 to separate with upper surface 111.
With reference to Fig. 2, the connecting rod 1 of the present embodiment and axle sleeve 2 are connected as a single entity by welding.Certainly, in other embodiments, axle
Set can be fixed on connecting rod by pin, screw, rivet etc..
With reference to Fig. 2, the bindiny mechanism of the present embodiment also includes connector 40, and connecting rod 1 is connected by connector 40 with valve block,
Specific: fire-preventing check valve also includes the second screw 30 and the 3rd screw, connecting rod 1 is provided with the second screw thread away from one end of axle sleeve 2
Hole 13, connector 40 is provided with the first avoidance hole, and the second screw 30 passes through the first avoidance hole to be connected with the second screwed hole 13, so that
Connector 40 is fixed on connecting rod 1；Valve block is provided with the second avoidance hole, and connector 40 is additionally provided with the 3rd screwed hole, the 3rd spiral shell
Nail avoids Kong Yu tri- screwed hole through second and connects, and is fixed on valve block with realizing connector 40.Of the present utility model its
In his embodiment, connecting rod is rotated with valve block and is connected, or, connecting rod is fixed on valve block.
With reference to Fig. 2 it is preferred that connecting rod 1 is additionally provided with escape groove 14 away from one end of axle sleeve 2, when the 3rd screw passes through second
When avoiding the connection of Kong Yu tri- screwed hole, escape groove 14 can avoid connecting rod 1 to interfere with the 3rd screw.
With reference to Fig. 1, first flexible member 4 of the present embodiment is torsion spring, and wherein, the first flexible member 4 is enclosed within axle sleeve 2,
First flexible member 4 one end is connected with connecting rod 1, and the first flexible member 4 other end is connected with valve seat 8, preferably: the first elasticity unit
Part 4 one end is connected on connecting rod 1, and the first flexible member 4 other end is connected on valve seat 8.In other enforcements of the present utility model
In example, valve seat is provided with the first location hole, and connecting rod is provided with the second location hole, and the first location hole is inserted in first flexible member one end
Interior, first flexible member other end insertion the second positioning in the hole.
With reference to Fig. 1 and Fig. 3, second flexible member 7 of the present embodiment is torsion spring, and wherein, the second flexible member 7 is enclosed within second
In rotating shaft 531, the second flexible member 7 one end is connected with driving lever 5, and the second flexible member 7 other end is connected with valve seat 8, preferably:
The valve seat 8 of the present embodiment is provided with spacing hole, and the second linkage section 53 is provided with gag lever post 532, gag lever post 532 and the second rotating shaft
531 is parallel, and spacing in the hole, the lower surface of the second flexible member 7 other end and gag lever post 532 are inserted in the second flexible member 7 one end
Offset.In other embodiment of the present utility model, second flexible member one end is provided with retainer ring, and described Fixing shrink ring is spacing
On bar, the second flexible member other end is welded on valve seat.
With reference to Fig. 1, the fire-preventing check valve of the present embodiment also includes locating part 10, and locating part 10 is fixed on the side wall of valve seat 8
On, when the second flexible member 7 is ordered about driving lever 5 and offseted with fuse member 6 side, fuse member 6 opposite side and locating part 10 offset.When
In course of normal operation, locating part 10 can avoid fuse member 6 to occur position to change and cause valve block to close row fire-preventing check valve
Gas port.
With reference to Fig. 1 it is preferred that described locating part 10 is one of stud and alignment pin.
With reference to Fig. 1 and Fig. 3, the fire-preventing check valve of the present embodiment also includes packing ring 9, and packing ring 9 is enclosed within first rotating shaft 521,
Packing ring 9 can avoid the first linkage section 52 and the side wall of valve seat 8 to produce sliding friction.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model does not limit to
In this, those of ordinary skill in the art should be understood that the utility model includes but is not limited to accompanying drawing and specific embodiment above
Described in content.Any modification without departing from function and structure principle of the present utility model is intended to be included in claims
In scope.
Claims (10)
1. a kind of fire-preventing check valve, including body, valve block, rotating shaft, bindiny mechanism and the first flexible member, described body is provided with row
Gas port, described valve block lid is located on described exhaust outlet, and described rotating shaft is connected with described body, and described rotating shaft is passed through with described valve block
Described bindiny mechanism connects, and described first flexible member drives described bindiny mechanism around described axis of rotation, to keep described valve
Piece closes the trend of described exhaust outlet it is characterised in that described bindiny mechanism includes connecting rod and the axle being fixed on described connecting rod
Set, described connecting rod is connected with described valve block, and described axle sleeve is enclosed within described rotating shaft, and described rotating shaft is with described sleeve thread even
Connect.
2. it is characterised in that described axle sleeve has axis hole, described axis hole is first to fire-preventing check valve as claimed in claim 1
Screwed hole, the axial length of described first screwed hole is more than the thickness of described connecting rod.
3. fire-preventing check valve as claimed in claim 1 is it is characterised in that described fire-preventing check valve also includes driving lever, fuse member
With the second flexible member, described driving lever and described body rotate and be connected, described fuse member fixation on the body, described second
The elastic force of flexible member is more than the elastic force of described first flexible member, and described second flexible member one end is connected with described body,
The described second flexible member other end is connected with described driving lever and drives described driving lever to be offseted with described fuse member.
4. fire-preventing check valve as claimed in claim 3 it is characterised in that described connecting rod adjacent to one end of described axle sleeve be provided with to
The block of outer extension, the angle between described block and described connecting rod is less than 90 °, after described fuse member high temperature melting, described the
Two flexible members drive described driving lever to extrude described block, and described block drives described connecting rod around described axis of rotation, to keep
Described valve block closes the trend of described exhaust outlet.
5. fire-preventing check valve as claimed in claim 4 it is characterised in that described block include can be upper with what described driving lever offseted
End face, described upper surface is plane.
6. fire-preventing check valve as claimed in claim 5 is it is characterised in that described block is provided with the projection stretching out, described
Connecting rod, described upper surface and described projection surround stopper slot.
7. the fire-preventing check valve as described in one of claim 1 to 6 is it is characterised in that described connecting rod passes through weldering with described axle sleeve
It is integrated in succession.
8. the fire-preventing check valve as described in one of claim 1 to 6 is it is characterised in that described connecting rod is away from the one of described axle sleeve
End is provided with the second screwed hole.
9. the fire-preventing check valve as described in one of claim 1 to 6 is it is characterised in that described fire-preventing check valve also includes screw,
Described rotating shaft is the bar portion of described screw.
10. the fire-preventing check valve as described in one of claim 1 to 6 is it is characterised in that described body includes valve body and is fixed on
Valve seat on described valve body, described rotating shaft is connected with described valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620861668.XU CN205896294U (en) | 2016-08-09 | 2016-08-09 | Fire -proof check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620861668.XU CN205896294U (en) | 2016-08-09 | 2016-08-09 | Fire -proof check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205896294U true CN205896294U (en) | 2017-01-18 |
Family
ID=57781091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620861668.XU Active CN205896294U (en) | 2016-08-09 | 2016-08-09 | Fire -proof check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205896294U (en) |
-
2016
- 2016-08-09 CN CN201620861668.XU patent/CN205896294U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Lianzhi (Beijing) Technical Service Co., Ltd Assignor: HANGZHOU XIAOMI ENVIRONMENT TECHNOLOGY Co.,Ltd. Contract record no.: X2020990000381 Denomination of utility model: Fire-proof check valve Granted publication date: 20170118 License type: Exclusive License Record date: 20200727 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Lianzhi (Beijing) Technical Service Co., Ltd Assignor: HANGZHOU XIAOMI ENVIRONMENT TECHNOLOGY Co.,Ltd. Contract record no.: X2020990000381 Date of cancellation: 20201113 |
|
| EC01 | Cancellation of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Lianzhi (Beijing) Technical Service Co., Ltd Assignor: HANGZHOU XIAOMI ENVIRONMENT TECHNOLOGY Co.,Ltd. Contract record no.: X2020990000595 Denomination of utility model: A fire check valve Granted publication date: 20170118 License type: Exclusive License Record date: 20201113 |
|
| EE01 | Entry into force of recordation of patent licensing contract |