CN110701347A - Butterfly-shaped fireproof temperature sensing device - Google Patents
Butterfly-shaped fireproof temperature sensing device Download PDFInfo
- Publication number
- CN110701347A CN110701347A CN201911079506.5A CN201911079506A CN110701347A CN 110701347 A CN110701347 A CN 110701347A CN 201911079506 A CN201911079506 A CN 201911079506A CN 110701347 A CN110701347 A CN 110701347A
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- positioning
- rotating arm
- sensing device
- temperature sensing
- torsion spring
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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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
- F16K15/035—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member with a plurality of valve members
- F16K15/036—Dual valve members with hinges crossing the flow line substantially diametrical
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/50—Preventing rotation of valve members
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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
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
- F16K15/1821—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism for check valves with a hinged or pivoted closure member
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/386—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the closure members being rotatable or pivoting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Special Wing (AREA)
Abstract
The invention discloses a butterfly-shaped fireproof temperature sensing device which comprises a cross beam, a positioning shaft and a torsion spring, wherein the cross beam stretches across a valve body opening, an upward-protruding arch structure is arranged in the middle of the cross beam, the positioning shaft penetrates through the arch structure, two rotating arms and the torsion spring are symmetrically arranged on the positioning shaft in a penetrating mode, one end of the torsion spring abuts against the rotating arms, the other end of the torsion spring abuts against the arch structure, and meanwhile the two rotating arms are connected through two fuse links which are bonded with each other. According to the invention, by utilizing the design of the torsion spring and the rotating arm, when the rotating arm rotates along the positioning shaft under the action of the torsion force of the torsion spring, the rotating arm rotates upwards to be away from the check door plate to rotate downwards to be pressed and buckled on the check door plate in an initial state, so that the valve is tightly closed to realize the fireproof isolation function.
Description
Technical Field
The invention relates to a fireproof temperature sensing device used in a check valve, in particular to a butterfly-shaped fireproof temperature sensing device.
Background
The check valve used for the direct drainage of the public flue or the outer wall has higher requirements on the opening effect, the fireproof performance, the sealing effect and the like of the check door plate, but the existing check valve has many defects, and the main defects are that although a fireproof device is arranged, the structure is complex, the manufacturing cost is high, the check valve is easy to lose effectiveness, and the fireproof performance is poor; meanwhile, the phenomenon of odor tainting of the flue sometimes occurs, and the indoor environment is full of peculiar smell, which seriously affects the health of family members.
Therefore, it is desired to solve the above problems.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a butterfly-shaped fireproof temperature sensing device which is reliable in performance and not prone to failure.
The technical scheme is as follows: in order to achieve the above purpose, the invention discloses a butterfly-shaped fireproof temperature sensing device, which comprises a cross beam, a positioning shaft and torsion springs, wherein the cross beam stretches across a valve body opening and is provided with an upward-convex arch structure in the middle, the positioning shaft is arranged on the arch structure in a penetrating manner, two rotating arms capable of rotating around the positioning shaft and the torsion springs are symmetrically arranged on the positioning shaft in a penetrating manner and correspond to the rotating arms one by one, one end of each torsion spring is abutted against the corresponding rotating arm, the other end of each torsion spring is abutted against the arch structure, and the two rotating arms are connected through two bonded fuse links; when the external temperature reaches a certain temperature, the two adhered fuse links are separated, and the rotating arm which rotates upwards and is far away from the check door plate rotates downwards around the positioning shaft under the torsion action of the torsion spring in an initial state and is pressed and buckled on the check door plate, so that the valve is closed to realize the fireproof isolation function. According to the invention, by utilizing the design of the torsion spring and the rotating arm, when the rotating arm rotates along the positioning shaft under the action of the torsion force of the torsion spring, the rotating arm rotates upwards to be away from the check door plate to rotate downwards to be pressed and buckled on the check door plate in an initial state, so that the valve is tightly closed to realize the fireproof isolation function.
The positioning piece comprises a positioning plate, a positioning groove positioned on the positioning plate, a positioning rod used for driving the positioning piece to move and one-way positioning pieces obliquely arranged on the positioning plate and in one-to-one correspondence with the rotating arms, the rotating arms are provided with one-way positioning tooth sockets clamped with the one-way positioning pieces, the arch structure is provided with a guide groove used for guiding the positioning rod and a positioning hole used for connecting and fixing the positioning plate, and bolts penetrate through the positioning hole and the positioning groove; the one-way locating piece slides along one-way location tooth's socket unilateral in the rotatory in-process down of swinging boom, and one-way locating piece block is in one-way location tooth's socket when the swinging boom stops to rotate and press the lock at check door plant, and the one-way spacing card of swinging boom dies. The invention realizes the one-way limiting and locking function of the rotating arm by utilizing the combined structure design that the one-way positioning sheet on the positioning piece capable of moving along the beam is clamped with the one-way positioning tooth socket on the rotating arm, thereby preventing the impact force generated by the flue from driving the rotating arm to rotate and opening the check door plate.
Preferably, a reserved positioning hole and a reserved positioning groove for fixing the bolt in a penetrating mode are further formed in the arch structure and the positioning piece respectively.
Furthermore, the front end of swinging boom is equipped with the jack catch, the non return door plant is equipped with the draw-in groove with jack catch looks adaptation.
Furthermore, an auxiliary clamping jaw positioned at the rear side of the clamping jaw is also arranged on the rotating arm. The invention utilizes the clamping jaw and the auxiliary clamping jaw to form the pressing force at the position 2 on the check door plate, so that the check door plate is closed more tightly.
Preferably, the rotating arm is provided with a connecting groove for connecting a fuse link, and the fuse link comprises a connecting portion inserted into the connecting groove, an adhering portion for adhering, and a transition portion for connecting the adhering portion and the connecting portion.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages:
(1) according to the invention, by utilizing the design of the torsion spring and the rotating arm, when the rotating arm rotates along the positioning shaft under the action of the torsion force of the torsion spring, the rotating arm rotates upwards to be away from the check door plate to rotate downwards to be pressed and buckled on the check door plate in an initial state, so that the valve is tightly closed to realize a fireproof isolation function;
(2) the invention utilizes the combined structure design that the one-way positioning sheet on the positioning piece which can move along the beam is clamped with the one-way positioning tooth socket on the rotating arm, realizes the one-way limiting and locking function of the rotating arm, and avoids the impact force generated by the flue from driving the rotating arm to rotate, thereby opening the non-return door plate;
(3) the invention utilizes the clamping jaw and the auxiliary clamping jaw to form the pressing force at the position 2 on the check door plate, so that the check door plate is closed more tightly.
Drawings
FIG. 1 is a schematic structural view of a fire check valve in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a fire-proof temperature-sensing device in embodiment 1 of the present invention;
fig. 3 is a schematic connection diagram of a cross beam and a positioning member in embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a positioning element in embodiment 1 of the present invention;
FIG. 5 is a schematic view showing the connection of the swivel arm and the torsion spring in embodiment 1 of the present invention;
fig. 6 is a schematic structural view of a metal cylinder in example 1 of the present invention;
FIG. 7 is a schematic structural view of a closed state of the fire check valve in embodiment 1 of the present invention;
fig. 8 is a schematic structural view of a fire protection temperature sensing device in embodiment 1 of the present invention in a closed state;
FIG. 9 is a schematic view showing the installation of a check door panel in embodiment 1 of the present invention;
FIG. 10 is a schematic structural view of a check door panel according to embodiment 1 of the present invention;
FIG. 11 is a top view of a check door panel in accordance with embodiment 1 of the present invention;
fig. 12 is a schematic structural view of a metal cylinder in example 2 of the present invention;
FIG. 13 is a schematic structural view of a fire check valve in embodiment 3 of the present invention;
fig. 14 is a schematic structural view of a metal cylinder in example 3 of the present invention;
FIG. 15 is a schematic connection diagram of a variable diameter sleeve in embodiment 3 of the present invention;
fig. 16 is a schematic structural view of a closed state of the fire check valve in embodiment 3 of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Example 1
As shown in fig. 1 and 2, the invention discloses a butterfly-shaped fireproof temperature sensing device which is suitable for a fireproof check valve, and the fireproof check valve comprises a metal cylinder 1, a check door plate 2, the butterfly-shaped fireproof temperature sensing device, a metal check door frame 10 and a metal mounting seat 11.
As shown in fig. 6, the metal cylinder 1 includes an upper cylinder 101 and a lower cylinder 102 which are sleeved with each other, a protrusion 103 is disposed on the upper cylinder 101, an L-shaped groove 104 is disposed at a corresponding position on the lower cylinder 102, the lower cylinder 102 is inserted into the upper cylinder 101, the protrusion 103 is inserted into a longitudinal groove of the L-shaped groove 104, the upper cylinder 101 or the lower cylinder 102 is rotated, and the protrusion 103 is locked in a transverse groove of the L-shaped groove 104. One end of the lower cylinder 102 is provided with a metal mounting seat 11, the metal mounting seat 11 and the lower cylinder 102 are of a welded structure or an integrated structure, and the metal mounting seat 11 is provided with a connecting U-shaped groove or a waist-shaped hole so as to fixedly mount the check valve by installing an expansion screw or fixedly mount the check valve by other methods. Wherein, the structure that barrel and lower barrel were established each other is adopted to metal barrel 1, has avoided the barrel because of the problem that the barrel draws high disability rate in the product production process that many times stretch forming technology caused, simultaneously in the use when needs wash the check valve, only need dismantle the barrel can, and need not to dismantle with the fixed lower barrel of flue and open, reduce the degree of difficulty of wasing the check valve, split type easy to assemble and convenient washing.
As shown in fig. 9, 10 and 11, the inner wall of the upper cylinder 101 of the metal cylinder 1 is obliquely provided with a metal non-return door frame 10, the two non-return door panels 2 are symmetrically arranged on the metal non-return door frame 10, the non-return door panels of the present invention are obliquely arranged in the metal cylinder, and the oblique surface gravity generated by the double-open non-return door panels is beneficial to closing the valve, so as to ensure that the two non-return door panels are in a closed state when the non-return valve is not used. The metal non-return door frame 10 includes the round frame 1001 that is fixed in the metal cylinder inner wall and the central door frame 1002 that is located the round frame symmetry axis department, and the side of round frame 1001 and central door frame 1002 is blade form side, and this blade form side passes through D shape silica gel sealing washer 204 with the blade form of non-return door plant and realizes effective sealing. The check door plate 2 comprises an upper door plate 202 and a lower door plate 203, and a clamping groove 201 matched with the clamping claw 502 is formed in the upper door plate 202 of the check door plate 2. The peripheries of the upper door panel 202 and the lower door panel 203 are punched in a blade shape, and the upper door panel 202 and the lower door panel 203 are fixedly connected to each other by rivets or bolts. And D-shaped silica gel sealing rings 204 for sealing the valve body opening are buckled and pressed at the peripheries of the upper door panel 202 and the lower door panel 203. The upper door panel 202 and the lower door panel 203 are both D-shaped metal plates, which include a straight edge and a circular edge. The two end portions of the straight edge of the upper door panel 202 are respectively bent around themselves to form a central door shaft 205, and the upper door panel 202 drives the lower door panel to rotate around the central door shaft 205 formed by bending itself. Hinges 12 are respectively provided on the valve body near both ends of the central door shaft 205, fixing catches 13 for fixing the central door shaft 205 are provided on the hinges 12, and the upper door plate 202 is connected with the hinges 12 and the fixing catches 13 on the valve body through the central door shaft 205. This non return door plant 2 realizes nimble rotation through the central door-hinge that self bent the formation, reduces greasy dirt or dust in the use to the influence of rotation flexibility ratio, and design benefit can open and close completely, improves ventilation effect. The plane of the non-return door plate 2 and the vertical direction form an included angle of 25-40 degrees, so that when the fireproof check valve and the butterfly-shaped fireproof temperature sensing device are not used, the two non-return door plates lean against the metal non-return door frame 10 under the action of gravity, and therefore the fireproof check valve with the butterfly-shaped fireproof temperature sensing device is in a closed state.
The butterfly-shaped fireproof temperature sensing device is positioned in the metal cylinder 1 and above the symmetry axis of the two check door plates 2. The butterfly-shaped fireproof temperature sensing device is arranged in the middle, and the movement of the check door plate 2 is not influenced. Meanwhile, the non-return door plate 2 in an open state can be completely accommodated by the height of the metal cylinder body 1, the fireproof temperature sensing device is protected from being damaged, the fireproof reliability of the non-return door plate is enhanced, meanwhile, the situation that strong wind and foreign matters at the inner wall or the outer wall of a flue block the opening of the metal non-return door plate is avoided, and the reliability of the fireproof check valve with the butterfly-shaped fireproof temperature sensing device and the fireproof temperature sensing device is further guaranteed.
The butterfly-shaped fireproof temperature sensing device comprises a beam 3, a positioning shaft 4, a rotating arm 5, a torsion spring 6, a fuse link 7, a positioning piece 8, a bolt 9 and a spacer 14. The beam 3 is a bending plate crossing the valve body opening, the bending plate comprises a beam connecting part 305 fixed with the inner side of the upper cylinder 101 of the metal cylinder 1 and a beam part 306 parallel to the symmetry axis of the check door plate, the beam part 306 is provided with an arch structure 301 protruding upwards, and the side edge of the beam 3 in the length direction is provided with a folding edge 307 for strengthening. The location axle 4 is worn to establish at bow-shaped structure 301 and fixed through bolt 15, and two swinging boom 5 symmetries are worn to establish on location axle 4, still wear to be equipped with spacer 14 on being located the location axle 4 between two swinging boom 5 simultaneously, and two swinging boom of isolation can be played to this spacer 14, prevent swinging boom mutual interference. The rotating arm 5 comprises a rotating plate 505 and connecting lugs 506 which are positioned at two sides of the rotating plate 505 and are used for penetrating the positioning shaft 4, and a unidirectional positioning tooth socket 501 used for limiting the rotating arm is arranged on the connecting lug 506 close to the other rotating arm 5. As shown in fig. 5, a claw 502 is provided at the front end of the rotating plate 505, an auxiliary claw 503 is further provided on the rotating plate 505 located at the rear side of the claw 502, and a connecting groove 504 for connecting the fuse link 7 is further provided on the rotating plate 505. The torsion spring 6 is arranged on the positioning shaft 4 between the connecting lugs at the two sides of the rotating arm 5 in a penetrating way, one end of the torsion spring 6 is abutted against the rotating plate 505, and the other end is abutted against the arch structure 301. Two fuse links 7 one end bonds each other, and the other end is connected with the spread groove 504 of swinging boom 5 respectively, and fuse link 7 uses copper sheet or steel sheet including connecting portion 701 that inserts spread groove 504, the portion of bonding 702 that is used for the bonding and the transition portion 703 that is used for connecting bonding portion and connecting portion, and the fuse link at this place, and standard melting point control by temperature change accords with the national fire department and approves the standard, and the fuse link breaks off when the operating temperature reaches fusing temperature, and control by temperature change is accurate, and the reaction is sensitive. As shown in fig. 3, the arch structure 301 is connected to a positioning element 8 capable of moving along the arch structure and used for limiting the rotating arm, and as shown in fig. 4, the positioning element 8 includes a positioning plate 801, a positioning groove 802 located on the positioning plate, a reserved positioning groove 805 located on the positioning plate, a positioning rod 803 used for driving the positioning element to move, and a one-way positioning piece 804 obliquely disposed on the positioning plate and corresponding to the one-way positioning tooth socket 501 on the rotating arm one by one. The arch structure 301 is provided with a guide groove 302 for guiding the positioning rod, a positioning hole 303 for connecting and fixing the positioning plate and a reserved positioning hole 304 for fixing a penetrating bolt, and the positioning hole 303 and the positioning hole 802 are penetrated with a bolt 9; the unidirectional locating piece slides along the unidirectional locating tooth groove in a unidirectional way in the downward rotation process of the rotating arm, when the rotating arm stops rotating and is pressed and buckled on the non-return door plate, the unidirectional locating piece is clamped in the unidirectional locating tooth groove, and the rotating arm is clamped in a unidirectional limiting way, as shown in fig. 7 and 8; if necessary, the positioning rod is pulled to move the positioning piece until the unidirectional positioning piece is separated from the unidirectional positioning tooth groove, the rotating arm rotates upwards to reset, and then the positioning rod is pulled to move the positioning piece to return to the initial state.
The working process is as follows: firstly, a fireproof check valve with a butterfly-shaped fireproof temperature sensing device is additionally arranged on a wall surface, and the installation position of the fireproof check valve is adjusted. When a fireproof check valve with a butterfly-shaped fireproof temperature sensing device is opened, two check door plates are completely opened to discharge waste gas; when the fireproof check valve with the butterfly-shaped fireproof temperature sensing device is closed, the check door plate obliquely falls back on the metal check door frame by means of self gravity; when the temperature in the flue is too high, the two adhered fuse links are separated, the rotating arm which rotates upwards and is far away from the check door plate in the initial state rotates downwards around the positioning shaft under the action of the torsion force of the torsion spring and is pressed and buckled on the check door plate, and the positioning piece locks the rotating arm, so that the check door plate is firmly closed to avoid the spread of fire.
The product has the following application:
can be used in a public flue: the fireproof check valve with the butterfly-shaped fireproof temperature sensing device is used for discharging oil fume and preventing smoke from returning in a common flue of a household kitchen, a fireproof system, a kitchen range hood exhausts air, the common flue is fireproof and is normally closed at ordinary times, peculiar smell brought in the common flue is prevented, smell fleeing is avoided, and the health of family people is cared; when the range hood works, the fireproof check valve with the butterfly-shaped fireproof temperature sensing device and the door plate of the fireproof temperature sensing device are opened greatly, are in an 'open' state, have large caliber and discharge smoke smoothly without obstruction, and when the air temperature reaches fusing temperature, the fuse link of the fireproof check valve with the butterfly-shaped fireproof temperature sensing device acts to automatically close, so that the invasion of external fire is avoided.
Can also be used on the outer wall: the fireproof check valve with the butterfly-shaped fireproof temperature sensing device is used for directly discharging the outer wall, and can effectively prevent small animals, birds, dust and the like from entering the range hood.
Example 2
As shown in fig. 12, the structure of embodiment 2 is the same as that of embodiment 1 except that: the metal cylinder 1 is an integrated structure, a metal mounting seat 11 is arranged at one end of the metal cylinder 1, and the metal mounting seat 11 and the metal cylinder 1 are of a welding structure or an integrated structure.
Example 3
As shown in fig. 13, 14, 15, and 16, the structure of embodiment 3 is the same as that of embodiment 1, except that: the end of the upper cylinder 101 of the metal cylinder 1 is obliquely provided with a metal non-return door frame 10, and the two non-return door panels 2 are symmetrically arranged on the metal non-return door frame 10. When in use, the upper cylinder 101 of the metal cylinder 1 is sleeved with the reducing sleeve 16 for connecting with a wall body. In addition, both ends of the beam connecting portion 305 are fixedly connected to the metal mounting base 11. The upper door plate 202 of the double-door plate 2 is connected with a clamping plate 17, and clamping grooves 201 matched with the clamping claws 502 are formed in the clamping plate 17.
Claims (6)
1. A butterfly-shaped fireproof temperature sensing device is characterized in that: the valve body opening crossing device comprises a cross beam (3) crossing a valve body opening and provided with an upward convex arch structure (301) in the middle, and a positioning shaft (4) penetrating through the arch structure (301), wherein two rotating arms (5) capable of rotating around the positioning shaft and torsion springs (6) arranged in one-to-one correspondence with the rotating arms are symmetrically arranged on the positioning shaft (4) in a penetrating manner, one end of each torsion spring (6) is abutted against the corresponding rotating arm (5), the other end of each torsion spring is abutted against the arch structure (301), and meanwhile, the two rotating arms (5) are connected through two adhered fuse links (7); when the external temperature reaches a certain temperature, the two adhered fuse links are separated, and the rotating arm which rotates upwards and is far away from the check door plate rotates downwards around the positioning shaft under the torsion action of the torsion spring in an initial state and is pressed and buckled on the check door plate, so that the valve is closed to realize the fireproof isolation function.
2. The butterfly fire protection temperature sensing device of claim 1, wherein: the positioning part (8) which can move along the arch structure and is used for limiting the rotating arm is connected to the arch structure (301), the positioning part (8) comprises a positioning plate (801), a positioning groove (802) positioned on the positioning plate, a positioning rod (803) used for driving the positioning part to move and one-way positioning pieces (804) which are obliquely arranged on the positioning plate and correspond to the rotating arm one by one, one-way positioning tooth sockets (501) which are clamped with the one-way positioning pieces are arranged on the rotating arm (5), a guide groove (302) used for guiding the positioning rod and a positioning hole (303) used for connecting and fixing the positioning plate are arranged on the arch structure (301), and bolts (9) are arranged on the positioning hole (303) and the positioning groove (802); the one-way locating piece slides along one-way location tooth's socket unilateral in the rotatory in-process down of swinging boom, and one-way locating piece block is in one-way location tooth's socket when the swinging boom stops to rotate and press the lock at check door plant, and the one-way spacing card of swinging boom dies.
3. The butterfly fire protection temperature sensing device of claim 2, wherein: and a reserved positioning hole (304) and a reserved positioning groove (805) for fixing a bolt in a penetrating way are respectively formed in the arch structure (301) and the positioning piece (8).
4. The butterfly fire protection temperature sensing device of claim 1, wherein: the front end of the rotating arm (5) is provided with a clamping jaw (502), and the check door plate (2) is provided with a clamping groove (201) matched with the clamping jaw.
5. The butterfly fire protection temperature sensing device of claim 4, wherein: the rotating arm (5) is also provided with an auxiliary clamping jaw (503) positioned at the rear side of the clamping jaw (502).
6. The butterfly fire protection temperature sensing device of claim 1, wherein: the rotating arm (5) is provided with a connecting groove (504) for connecting a fuse link, and the fuse link (7) comprises a connecting part (701) inserted into the connecting groove (504), an adhering part (702) for adhering and a transition part (703) for connecting the adhering part and the connecting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079506.5A CN110701347A (en) | 2019-11-07 | 2019-11-07 | Butterfly-shaped fireproof temperature sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079506.5A CN110701347A (en) | 2019-11-07 | 2019-11-07 | Butterfly-shaped fireproof temperature sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110701347A true CN110701347A (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911079506.5A Pending CN110701347A (en) | 2019-11-07 | 2019-11-07 | Butterfly-shaped fireproof temperature sensing device |
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| CN (1) | CN110701347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700906A (en) * | 2021-09-09 | 2021-11-26 | 永秀阀门有限公司 | Multilayer sealed telescopic butterfly valve |
-
2019
- 2019-11-07 CN CN201911079506.5A patent/CN110701347A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700906A (en) * | 2021-09-09 | 2021-11-26 | 永秀阀门有限公司 | Multilayer sealed telescopic butterfly valve |
| CN113700906B (en) * | 2021-09-09 | 2023-10-24 | 永秀阀门有限公司 | Multi-layer sealed telescopic butterfly valve |
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