CN112344073A

CN112344073A - Fire-proof valve with strong fire-proof property

Info

Publication number: CN112344073A
Application number: CN202011238158.4A
Authority: CN
Inventors: 李海涛; 赵广阳; 李�雨
Original assignee: Zhejiang Tianqi Ventilation Equipment Co ltd
Current assignee: Zhejiang Tianqi Ventilation Equipment Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-02-09
Anticipated expiration: 2040-11-09
Also published as: CN112344073B

Abstract

The utility model relates to a fire prevention strong nature's fire prevention valve, it includes the casing, the casing both ends are air outlet and air intake respectively, be provided with the PLASTIC LAMINATED in the casing, the ventilation hole has been seted up on the PLASTIC LAMINATED, be provided with the sealing device sealed with the ventilation hole in the casing, sealing device includes fire prevention post, a plurality of pole and compression spring of wearing to establish, the fire prevention post sets up in the casing, wear to establish pole one end and set up on the fire prevention post, and the other end runs through the PLASTIC LAMINATED, compression spring is used for maintaining the sealed state in fire prevention post with the ventilation hole, be provided with the latch device that will wear to establish the. This application has the effect that improves leakproofness between fire prevention post and the casing.

Description

Fire-proof valve with strong fire-proof property

Technical Field

The application relates to the technical field of fire-proof equipment, in particular to a fire-proof valve with fire-proof tightness.

Background

The fire prevention valve is installed on ventilating, air conditioning system send, the return air pipeline, is the open mode at ordinary times, triggers hot melting device or artifical pulling executor when getting on fire in the tuber pipe and makes fire prevention valve blade group close to cut off the passageway between tuber pipe and the equipment, and the separation has spread of intensity of a fire, prevents that inflammable from continuing to burn, can satisfy fire-resistant stability and fire-resistant integrality requirement in certain time, plays and separates the cigarette back-fire relief effect.

The application publication number CN108317257A of the invention is that Chinese patent discloses an improved structure of a fireproof strong-tightness fireproof valve, which comprises a frame body, a plurality of fireproof structures, a connecting structure, an elastic piece and a control module, wherein a positioning frame is arranged in the frame body, the fireproof structures are arranged on the frame body in parallel and comprise an upper rotating shaft, a lower rotating shaft, blades, a gasket, an upper fixing piece and a lower fixing piece, the blades of the fireproof structures can rotate together between an opening position and a closing position relative to the frame body through the connecting structure, the blades of the fireproof structures open the opening when in the opening position, and the blades of the fireproof structures close the opening when in the closing position; the temperature sensor is used for sensing the actual temperature around the fire damper in real time, the comparator is used for comparing whether the actual temperature is higher than the preset temperature or not, and sending a control signal to the controller when the actual temperature is higher than the preset temperature, and the controller is used for starting the motor.

During the use, temperature sensor detects the temperature of reality to compare actual temperature and preset temperature with the comparator, when actual temperature reached preset temperature, controller driving motor, a plurality of blades of motor drive are closed.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the opening is sealed by splicing adjacent blades, and because the blades are long and the surfaces of the blades are uneven, when the two blades are lapped together, a gap possibly exists between the two blades, and potential safety hazards exist.

Disclosure of Invention

In order to improve the leakproofness between fire prevention post and the casing, this application provides a fire prevention valve of fire prevention nature by force.

The application provides a fire prevention strong fire-tightness's fire prevention valve adopts following technical scheme:

the utility model provides a fire prevention strong nature's fire prevention valve, includes the casing, the casing both ends are air outlet and air intake respectively, be provided with the PLASTIC LAMINATED in the casing, the ventilation hole has been seted up on the PLASTIC LAMINATED, be provided with the sealing device sealed with the ventilation hole in the casing, sealing device includes fire pillar, a plurality of pole and compression spring wear to establish, the fire pillar sets up in the casing, wear to establish pole one end and set up on the fire pillar, the other end runs through the PLASTIC LAMINATED, compression spring is used for maintaining the sealed state in ventilation hole of fire pillar, be provided with the latch device that will wear to establish the pole location on the casing.

By adopting the technical scheme, when the fire is caught indoors, the through rod is loosened by the clamping device, the fireproof column moves in the direction close to the ventilation hole under the action of the compression spring and seals the ventilation hole, at the moment, the compression spring is in a compression state and compresses the fireproof column and the ventilation hole, and when the acting force of indoor hot air on the fireproof column is larger, the fireproof column and the ventilation hole are sealed more, so that the sealing effect of the fireproof column and the ventilation hole is improved; after the conflagration finishes, keep away from the direction removal in ventilation hole through the drive fire prevention post, latch device will wear to establish the pole and fix a position, makes things convenient for next use.

Optionally, the fire prevention post is located the one side of PLASTIC LAMINATED towards the air intake, compression spring is located the one side that the PLASTIC LAMINATED deviates from the fire prevention post, compression spring one end sets up on wearing to establish the pole, and the other end sets up on the PLASTIC LAMINATED, latch device is located the one side that the PLASTIC LAMINATED deviates from the fire prevention post.

Through adopting above-mentioned technical scheme, lie in compression spring and latch device one side that the PLASTIC LAMINATED deviates from the fire prevention post, when the conflagration takes place, reduced indoor fire or hot-blast damage to latch device and compression spring.

It is optional, it is provided with two to wear to establish the pole, latch device includes first joint pole, electro-magnet, a reset spring and controls the switching device that the electro-magnet switched on when getting on fire, first joint pole is located pressure spring and connects on the casing towards one side and vertical sliding of air outlet, wear to establish and be provided with the joint board on the pole, the joint board is located between first joint pole and the pressure spring and the joint board offsets with first joint pole, first joint pole is provided with the first direction chamfer that is used for conflicting mutually with the joint board towards the one end of air outlet and first joint pole bottom surface, a reset spring is used for maintaining the state that joint board and first joint pole are contradicted, the electro-magnet sets up on the casing and is located the casing outside.

By adopting the technical scheme, when a fire disaster happens, the switch device is electrified, the electromagnet generates magnetic force to attract the first clamping rod, the clamping plate is separated from the first clamping rod, and the fireproof column seals and compresses the ventilation hole under the action of the compression spring; after the conflagration has taken place, switching device outage, the electro-magnet no longer has the appeal, first joint pole is along being close to the direction removal of wearing to establish the pole under first reset spring's effect, later with the postnotum to the direction removal of keeping away from the PLASTIC LAMINATED, the joint board is contradicted with first direction chamfer, make the automatic rebound of first joint pole, when the joint board is located between first joint pole and the PLASTIC LAMINATED, the first joint pole of first reset spring drive is removed downwards, the PLASTIC LAMINATED is inconsistent with first joint pole, thereby fix a position the postnotum, made things convenient for operating personnel to resume the postnotum to original position, realize the used repeatedly of fire prevention valve, moreover, the steam generator is simple in structure and convenient operation.

Optionally, threaded connection has the regulating plate on wearing to establish the pole, the regulating plate is located between joint plate and the pressure spring, the pressure spring cover is established on wearing to establish the pole, and the other end is inconsistent with the regulating plate.

By adopting the technical scheme, the compression degree of the compression spring can be changed by rotating the adjusting plate when the fireproof column is used, and the pressing force between the fireproof column and the fireproof plate can be adjusted; the pressure spring sleeve is arranged on the penetrating rod to limit the orientation of the pressure spring, so that more pressure springs are pressed to act on the fireproof column, and the sealing effect of the fireproof plate and the fireproof column is improved to a certain extent.

Optionally, the clamping plate is in threaded connection with the penetrating rod.

Through adopting above-mentioned technical scheme, during the use, through rotating joint board, realize adjusting the positioning distance between PLASTIC LAMINATED and the fire prevention post to the realization is to the change of air volume, simple structure.

Optionally, the switching device includes first wire, second wire, the cylinder body and piston rod of sliding, the cylinder body that slides sets up on the casing, the piston rod slides and connects in the cylinder body that slides, it is gaseous to be provided with between piston rod and the cylinder body that slides and receive the thermal energy, first wire one end links to each other with an electro-magnet among them, and the other end sets up inside the casing of the one side of PLASTIC LAMINATED towards the air intake, second wire one end links to each other with another electro-magnet, and the other end sets up on the piston rod, be provided with the heat conduction pole on the cylinder body that slides, heat conduction pole one end penetrates in the cylinder body that slides and is located between the cylinder bottom of.

By adopting the technical scheme, when a fire disaster happens, the temperature in the shell gradually rises, the heat in the shell is transferred into the thermally expanded gas in the sliding cylinder body through the heat conducting rod, the thermally expanded gas is thermally expanded, the piston rod moves along the direction close to the first conducting wire to enable the first conducting wire to be communicated with the second conducting wire, the two electromagnets are electrified to attract the first clamping rod, and then the fireproof column seals the ventilation hole for fire prevention under the action of the compression spring; after the fire disaster is over, the temperature in the shell is recovered to a normal value, the gas is contracted due to thermal expansion, the piston rod is far away from the first lead, the electromagnet is powered off, and the first clamping rod is recovered to an initial state under the action of the first reset spring, so that the switch device is repeatedly utilized, has the function of automatically controlling the electromagnet to be powered off, and is convenient to operate; the heat conducting rod can enable heat in the shell to be quickly transmitted into the thermally expanded gas, and the reaction time of the switch device is shortened.

Optionally, a damping switch for communicating the first wire with the second wire is arranged on the piston rod, the damping switch comprises a switch box body, a driving tube, a second reset spring, a driving connecting rod, a driving spring, a clamping ring and a positioning device for positioning the driving connecting rod, the switch box body is arranged inside the shell and positioned on one side of the fireproof plate facing the air inlet, the driving tube is connected to the switch box body in a sliding manner along a direction close to the direction away from the first wire, the second reset spring is used for resetting the driving tube, the driving connecting rod is connected in the driving tube in a sliding manner, penetrates out of the switch box body and is used for being connected with the first wire when firing, the clamping ring is arranged on the driving connecting rod and positioned inside the switch box body, the driving spring is sleeved on the driving connecting rod and positioned between the driving tube and the clamping ring, one end of the driving spring is arranged on the driving tube, the other end sets up on the joint ring, drive spring is in compression state always, the piston rod is used for conflicting when the conflagration and promotes the driving tube to slide to first wire, the one end setting that first wire, electro-magnet junction were kept away from to first wire is in the one end that the switch box body was worn out at the drive connecting rod.

By adopting the technical scheme, when a fire disaster happens, the piston rod drives the driving pipe to slide into the switch box body, the driving spring is compressed, then the positioning device loosens the driving connecting rod, the driving spring drives the driving connecting rod to be close to the first conducting wire at a larger initial acceleration through the clamping ring, the speed of the communication between the first conducting wire and the second conducting wire is increased, the electromagnet is electrified, the fireproof column seals the ventilation hole for fire prevention, when the first conducting wire is communicated with the second conducting wire, the driving spring is in a compressed state, the situation that the electromagnet cannot be electrified due to insufficient contact between the first conducting wire and the second conducting wire is reduced, and the situation that the first conducting wire and the second conducting wire are directly jointed due to the change of air temperature is reduced; after the conflagration finishes, the piston rod drives the drive tube and resets, and the drive connecting rod removes along the direction of keeping away from first wire, and positioner will drive the connecting rod and carry out the joint location to realize damping switch's reuse.

Optionally, positioner includes actuating lever, second joint pole and third reset spring, the second joint pole is connected in the switch box with the perpendicular and sliding of drive connecting rod, the second joint pole is inconsistent with the joint ring, third reset spring maintains the inconsistent state of second joint pole and joint ring, actuating lever one end sets up on the driving tube, the drive hole has been seted up on the second joint pole, the distance of drive hole and actuating lever reduces along the direction that the driving tube is close to the joint ring gradually, the one end that the driving tube was kept away from to the actuating lever slides and connects on the switch box and penetrate in the drive hole, the radius of joint ring lateral surface reduces along the direction that the driving tube is close to the joint ring gradually.

By adopting the technical scheme, when a fire disaster happens, the piston rod drives the driving pipe to penetrate into the switch box body, the driving rod penetrates into the driving hole and is abutted against the inclined surface of the driving hole, the second clamping rod moves along the direction far away from the driving connecting rod to separate the second clamping rod from the clamping ring, and the driving connecting rod is driven by the driving spring to move along the direction close to the first lead to communicate the first lead with the second lead; after the conflagration finishes, the piston rod drives the drive tube and resets, and the actuating lever slips out the hole that slides, and third reset spring drives second joint pole and resets, later with the drive connecting rod along the direction removal of keeping away from first wire, makes joint ring and second joint pole inconsistent, has realized carrying out the automation with the drive connecting rod and unclamping simple structure when the piston rod drives the drive tube and removes.

Optionally, be provided with the resetting means who drives the drive connecting rod and keep away from drive spring on the casing, resetting means includes initiative voussoir, driven voussoir, release link and fourth reset spring, the one end of second wire is kept away from at the drive connecting rod to driven voussoir setting, driven voussoir upper end is provided with the second direction chamfer with being close to one end of switch box, the vertical slip of release link is connected on the casing and penetrates inside the casing, the setting of initiative voussoir penetrates the inside one end of casing at the release link, the initiative voussoir is contradicted with the second direction chamfer each other, fourth reset spring cover is established on the release link and is located between initiative voussoir and the casing inside wall, fourth reset spring one end sets up on the initiative voussoir, and the other end sets up on the casing inside wall.

By adopting the technical scheme, when the driving connecting rod needs to be reset after a fire disaster is over, the second reset spring drives the driving tube to move along the direction away from the first lead, and the driving tube is abutted against the driven wedge block on the driving connecting rod, so that the automatic reset of the driving connecting rod is realized; when the second reset spring does not reset the drive connecting rod, only need remove the release link to the direction that is close to the drive connecting rod, the second direction chamfer on initiative voussoir and the driven voussoir is contradicted, remove the drive connecting rod along the direction of keeping away from first wire, it is inconsistent with second joint pole to realize the joint ring for the second joint pole will drive connecting rod location joint, realize outside the casing, pull out the drive connecting rod and reset, simple structure and convenient operation.

Optionally, the surface of the fire prevention post towards the fire prevention board and the surface of deviating from the fire prevention board are conical surfaces, and the ventilation hole is matched with the conical side surface of the fire prevention post and is collided.

Through adopting above-mentioned technical scheme, the fire prevention post cooperatees with the ventilation hole and contradicts, has further improved the sealed effect in fire prevention post and ventilation hole, and the fire prevention post has reduced the blockking of wind in the fire prevention post to the casing for the circular conical surface towards the surface of air intake, makes the wind in the casing discharge from the ventilation hole more easily.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the compression spring can improve the sealing effect of the fireproof column and the vent hole, and the sealing effect of the fireproof column and the vent hole is better when hot air entering the air inlet is larger;

2. the clamping device can realize clamping and positioning of the penetrating rod in case of fire, and the repeated utilization of the clamping device is realized;

3. the damping switch can reduce the insufficient contact of the first lead and the second lead, so that the electromagnet cannot be electrified, and the reliability of the device is improved.

Drawings

Fig. 1 is a schematic structural diagram of a specific embodiment of the present application.

FIG. 2 is a cross-sectional view of the housing, latch, and seal of the present application.

Fig. 3 is an enlarged view at a in fig. 2 of the present application.

Fig. 4 is a sectional view of the switch device and the damping switch of the present application.

Fig. 5 is a cross-sectional view of the damping switch of the present application.

Description of reference numerals: 1. a housing; 11. a fire-proof plate; 12. a vent hole; 13. a first protective cover; 14. a sliding base; 15. a second protective cover; 16. a contact block; 161. a first ceramic sheet; 162. a first electrode sheet; 17. a reset groove; 2. a sealing device; 21. a fire-proof column; 22. a rod is arranged in a penetrating way; 23. a compression spring; 24. an adjusting plate; 25. a clamping and connecting plate; 3. a clamping device; 31. a first clamping connection rod; 32. an electromagnet; 33. a first return spring; 34. a switching device; 341. a first conductive line; 342. a second conductive line; 343. a sliding cylinder body; 344. a piston rod; 345. a thermally expanded gas; 35. a first guide chamfer; 36. sliding the column; 37. a heat conducting rod; 4. a damping switch; 41. opening and closing the box body; 411. a slip through hole; 412. a clamping groove; 42. a drive tube; 43. a second return spring; 44. a drive link; 441. a second ceramic sheet; 442. a second electrode sheet; 45. a drive spring; 46. a snap ring; 47. a positioning device; 471. a drive rod; 472. a second clamping connection rod; 473. a third return spring; 474. a third guide chamfer; 475. a clamping block; 476. a drive aperture; 48. a connecting plate; 5. a resetting device; 51. an active wedge block; 52. a driven wedge block; 53. a reset lever; 54. a fourth return spring; 55. a second guide chamfer.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses fire prevention valve of fire prevention nature by force. Referring to fig. 1, a fire-proof valve with fire-proof and strong sealing performance comprises a casing 1, an air inlet and an air outlet are respectively arranged at two ends of the casing 1, a fire-proof plate 11 is vertically and fixedly connected in the casing 1, a ventilation hole 12 is formed in the fire-proof plate 11, a sealing device 2 for sealing the ventilation hole 12 and a clamping device 3 for sealing the ventilation hole 12 by the sealing device 2 in case of fire are arranged in the casing 1.

Referring to fig. 2 and 3, the sealing device 2 includes a fire pillar 21, four penetrating rods 22 and two compression springs 23, the fire pillar 21 is vertically disposed and located on one side of the fire plate 11 facing the air inlet, the surfaces of the fire pillar 21 facing the air inlet and the air outlet are all conical surfaces, the air vent 12 is circular, the radius of the air vent 12 is gradually increased along the direction of the fire plate 11 close to the air inlet, the conical surface of the fire pillar 21 facing the air outlet is matched and abutted against the hole wall of the air vent 12, one end of each of the four penetrating rods 22 is fixedly connected to one end of the fire pillar 21 facing the air outlet and is parallel to the air outlet direction, the other end of each penetrating rod 22 penetrates through the fire plate 11, an adjusting plate 24 and a clamping plate 25 are connected to the penetrating rod 22 through threads, the clamping plate 25 is located on one side of the fire plate 11 facing the air outlet, the adjusting plate 24 is located between the clamping plate 25 and the fire plate 11, the, one end of the compression spring 23 is fixedly connected to the fireproof plate 11, the other end of the compression spring is abutted to the adjusting plate 24, and the compression spring 23 is always in a compression state.

Referring to fig. 2 and 3, the latch 3 includes a first latch rod 31, an electromagnet 32, a first return spring 33, and a switch device 34 for controlling the electromagnet 32 to be energized and de-energized, and the switch device 34 includes a first lead 341, a second lead 342, a slide cylinder 343, and a piston rod 344.

Referring to fig. 2 and 3, the upper and lower outer side walls of the casing 1 are fixedly connected with first protective covers 13, the surface of the fireproof plate 11 departing from the fireproof column 21 is fixedly connected with a horizontally arranged sliding base 14, a first clamping rod 31 is positioned in the first protective cover 13 and vertically connected to the casing 1 and the sliding base 14 in a sliding manner, the first clamping rod 31 is positioned at one side of the clamping plate 25 departing from the adjusting plate 24 and abuts against the surface of the clamping plate 25 departing from the adjusting plate 24, a first guide chamfer 35 is arranged between the surface of the first clamping rod 31 departing from the clamping plate 25 and one end of the first clamping rod 31 near the penetrating rod 22, one end of the first clamping rod 31 far away from the penetrating rod 22 is fixedly connected with a vertically arranged sliding column 36, a first return spring 33 is sleeved on the first clamping rod 31 and positioned between the sliding column 36 and the sliding base 14, one end of a first return spring 33 is fixedly connected to the sliding column 36, the other end is fixedly connected to the surface of the sliding base 14 departing from the penetrating rod 22; the electromagnet 32 is fixedly connected to the inner top wall of the first protective cover 13 and is located right above the first clamping rod 31.

Referring to fig. 2 and 4, a second protective cover 15 is fixedly connected to the inner top wall of the casing 1, and the second protective cover 15 is located on one side of the fire-proof column 21 deviating from the fire-proof plate 11, a contact block 16 is integrally connected to the inner top wall of the casing 1, the contact block 16 is located in the second protective cover 15, a first ceramic sheet 161 is fixedly connected to the surface of the contact block 16 deviating from the fire-proof plate 11, a first electrode plate 162 is fixedly connected to the surface of the first ceramic sheet 161 deviating from the contact block 16, one end of a first lead 341 is connected to the electromagnet 32 located above the two electromagnets 32, and the other end penetrates into the casing 1 and is fixed on the first electrode plate 162.

Referring to fig. 2 and 4, the cylinder body 343 that slides is fixed connection on the inside wall that the PLASTIC LAMINATED 11 is kept away from to second safety cover 15 and is parallel with the air-out direction, the post 36 that slides and connects in the cylinder body 343 that slides, it has the heated expansion gas 345 to store between the tank bottom of the cylinder body 343 that slides and the post 36 that slides, the heated expansion gas 345 includes the helium, be provided with heat conduction rod 37 on the cylinder body 343 that slides, heat conduction rod 37 includes the silicon carbide rod, the silicon carbide rod is vertical to be set up and one end is worn to establish in the cylinder body 343 that slides and is located the heated expansion gas 345, the other end is vertical to run through second safety cover 15 downwards and is.

Referring to fig. 2 and 4, a damping switch 4 is disposed on the piston rod 344, the damping switch 4 includes a switch box 41, a driving tube 42, a second return spring 43, a driving connecting rod 44, a driving spring 45, a snap ring 46, and a positioning device 47, and the positioning device 47 includes a driving rod 471, a second snap rod 472, and a third return spring 473.

Referring to fig. 2 and 4, the switch box 41 is fixedly connected to the inner top wall of the housing 1 and located in the second protective cover 15, the switch box 41 is located between the first electrode plate 162 and the piston rod 344, a sliding through hole 411 along the air outlet direction is formed in the surface of the switch box 41 close to the piston rod 344, the driving tube 42 is slidably connected in the sliding through hole 411, one end of the driving tube 42 close to the piston rod 344 penetrates through the switch box 41, the vertically arranged connecting plate 48 is fixedly connected to one end of the driving tube 42 close to the piston rod 344, the piston rod 344 is fixedly connected to the connecting plate 48, the second return spring 43 is sleeved on the driving tube 42 and located between the switch box 41 and the piston rod 344, one end of the second return spring 43 close to the switch box 41 is fixedly connected to the switch box 41, the other end is fixedly connected to the connecting, the driving rod 471 is parallel to the driving tube 42 and is slidably connected in the switch box 41, and a third guiding chamfer 474 is disposed between the surface of the driving rod 471 away from the piston rod 344 and the bottom surface of the driving rod 471.

Referring to fig. 2 and 4, the driving connecting rod 44 is slidably connected in the driving tube 42, one end of the driving connecting rod 44 close to the contact block 16 penetrates through the switch box 41, one end of the driving connecting rod 44 close to the contact block 16 is fixedly connected with a vertically arranged second ceramic plate 441, the surface of the second ceramic plate 441 facing the contact block 16 is fixedly connected with a vertically arranged second electrode plate 442, one end of a second conducting wire 342 is connected with the electromagnet 32 located relatively below in the two electromagnets 32, and the other end penetrates into the housing 1 and penetrates into the second protective cover 15 to be fixed on the second electrode plate 442.

Referring to fig. 4 and 5, the snap ring 46 is coaxially and fixedly connected to the driving connecting rod 44 and slidably connected in the sliding through hole 411, the radius of the ring side wall of the snap ring 46 is gradually reduced along the direction that the snap ring 46 is close to the contact block 16, the driving spring 45 is sleeved on the driving connecting rod 44 and is located between the surfaces of the snap ring 46 and the driving tube 42 close to the contact block 16, one end of the driving spring 45 is fixedly connected to the snap ring 46, the other end of the driving spring 45 is fixedly connected to the driving tube 42, and the driving spring 45 is always in a compressed state in the working process.

Referring to fig. 4 and 5, a vertically disposed clamping groove 412 is formed in the lowest position of the hole wall of the sliding through hole 411, the clamping groove 412 is located under the clamping ring 46, the second clamping rod 472 is vertically connected in the clamping groove 412 in a sliding manner, a clamping block 475 is fixedly connected to the upper end of the second clamping rod 472, the clamping block 475 is located between the clamping ring 46 and the first ceramic wafer 161, a chamfer is arranged at one end, close to the first ceramic wafer 161, of the upper surface of the clamping block 475 and one end, close to the clamping block 161, of the clamping block 475, a third return spring 473 is located in the clamping groove 412 and located between the second clamping rod 472 and the groove bottom of the clamping groove 412, the upper end of the third return spring 473 is fixedly connected to the bottom surface of the second clamping rod 472, the lower end of the third return spring is fixedly connected to the groove bottom of the clamping groove 412, a driving hole 476 along the air outlet direction is formed in the second clamping rod 472, the driving hole.

Referring to fig. 4 and 5, the housing 1 is provided with a reset device 5 for driving the driving connecting rod 44 to be away from the driving spring 45, the reset device 5 comprises a driving wedge 51, a driven wedge 52, a reset rod 53 and a fourth reset spring 54, the driven wedge 52 is fixedly connected to the surface of the driving connecting rod 44 close to the piston rod 344, and a second guide chamfer 55 is arranged between the upper surface of the driven wedge 52 and the surface of the driven wedge 52 close to the driving tube 42; reset groove 17 has been seted up on the roof in casing 1, reset link 53 vertical slip is connected on casing 1 and reset link 53 lower extreme penetrates reset groove 17 in, initiative voussoir 51 fixed connection is in reset link 53 bottom surface, the one end that initiative voussoir 51 bottom surface and initiative voussoir 51 are close to the air intake is provided with the chamfer, fourth reset spring 54 cover is established on reset link 53 and is located between the tank bottom of reset groove 17 and initiative voussoir 51, fourth reset spring 54 upper end fixed connection is on the tank bottom of reset groove 17, lower extreme fixed connection is on driven voussoir 52.

The implementation principle of the fire-proof valve with fire-proof and strong tightness in the embodiment of the application is as follows: when the conflagration takes place, during heat in the casing 1 spreads into the helium through heat conduction pole 37, thereby the helium is heated the inflation and promotes piston rod 344 and stretches out, driving tube 42 penetrates in switch box 41, driving spring 45 is compressed, thereby the realization is contradicted second joint pole 472 along the direction of keeping away from drive connecting rod 44 with drive hole 476 to the actuating lever 471, driving spring 45 drives first electrode piece 162 and offsets with second electrode piece 442, electro-magnet 32 removes first joint pole 31 along the direction of keeping away from wearing to establish pole 22, hold-down spring 23 drives the fire pillar 21 and the sealed tight of supporting of ventilation hole 12.

After the fire disaster, the piston rod 344 recovers the original position, the reset rod 53 moves downwards, the driving wedge 51 drives the driving connecting rod 44 to move along the direction away from the contact block 16 through the driven wedge 52, so that the second clamping rod 472 positions and clamps the driving connecting rod 44 to reset, and then the fire-proof column 21 moves along the direction away from the fire-proof plate 11, so that the first clamping rod 31 positions and clamps the penetrating rod 22, and the resetting of the penetrating rod 22 is realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a fire prevention valve of fire prevention nature by force which characterized in that: including casing (1), casing (1) both ends are air outlet and air intake respectively, be provided with PLASTIC LAMINATED (11) in casing (1), ventilation hole (12) have been seted up on PLASTIC LAMINATED (11), be provided with in casing (1) with ventilation hole (12) sealed sealing device (2), sealing device (2) include fire pillar (21), a plurality of pole (22) and compression spring (23) of wearing to establish, fire pillar (21) set up in casing (1), wear to establish pole (22) one end and set up on fire pillar (21), the other end runs through PLASTIC LAMINATED (11), compression spring (23) are used for maintaining fire pillar (21) with the sealed state in ventilation hole (12), be provided with on casing (1) and will wear to establish clamping device (3) of pole (22) location.

2. A fire safety valve as defined in claim 1, wherein: fire prevention post (21) are located one side of PLASTIC LAMINATED (11) towards the air intake, compression spring (23) are located one side that PLASTIC LAMINATED (11) deviate from fire prevention post (21), compression spring (23) one end sets up on wearing to establish pole (22), and the other end sets up on PLASTIC LAMINATED (11), latch device (3) are located one side that PLASTIC LAMINATED (11) deviate from fire prevention post (21).

3. A fire safety valve as defined in claim 2, wherein: the wear to establish pole (22) and be provided with two, clamping device (3) include first joint pole (31), electro-magnet (32), first reset spring (33) and controlling switching device (34) that electro-magnet (32) circular telegram when getting on fire, first joint pole (31) are located hold-down spring (23) towards one side of air outlet and vertical sliding connection on casing (1), wear to establish and be provided with joint board (25) on pole (22), joint board (25) are located between first joint pole (31) and hold-down spring (23) and joint board (25) and first joint pole (31) inconsistent, first joint pole (31) are provided with first direction chamfer (35) that are used for contradicting with joint board (25) towards the one end of air outlet and first joint pole (31) bottom surface, first reset spring (33) are used for maintaining the state that joint board (25) contradicted with first joint pole (31), the electromagnet (32) is arranged on the shell (1) and is positioned on the outer side of the shell (1).

4. A fire safety valve as defined in claim 3, wherein: wear to establish threaded connection and have regulating plate (24) on pole (22), regulating plate (24) are located between joint plate (25) and compression spring (23), compression spring (23) cover is established on wearing to establish pole (22), and the other end is inconsistent with regulating plate (24).

5. A fire safety valve as defined in claim 4, wherein: the clamping plate (25) is in threaded connection with the penetrating rod (22).

6. A fire safety valve as defined in claim 3, wherein: the switching device (34) comprises a first lead (341), a second lead (342), a sliding cylinder (343) and a piston rod (344), the sliding cylinder body (343) is arranged on the shell (1), the piston rod (344) is connected in the sliding cylinder body (343) in a sliding way, a gas (345) heated by thermal expansion is arranged between the piston rod (344) and the sliding cylinder body (343), one end of the first lead (341) is connected with one electromagnet (32) and the other end is arranged in the shell (1) at one side of the fireproof plate (11) facing the air inlet, one end of the second lead (342) is connected with the other electromagnet (32), the other end is arranged on the piston rod (344), the sliding cylinder body (343) is provided with a heat conducting rod (37), and one end of the heat conducting rod (37) penetrates into the sliding cylinder body (343) and is positioned between the piston rod (344) and the bottom of the sliding cylinder body (343).

7. A fire safety valve as defined in claim 6, wherein: the damping switch (4) which is used for communicating the first lead (341) with the second lead (342) is arranged on the piston rod (344), the damping switch (4) comprises a switch box body (41), a driving pipe (42), a second reset spring (43), a driving connecting rod (44), a driving spring (45), a clamping ring (46) and a positioning device (47) which is used for positioning the driving connecting rod (44), the switch box body (41) is arranged inside the shell (1) and is positioned on one side of the fireproof plate (11) facing the air inlet, the driving pipe (42) is connected to the switch box body (41) in a sliding mode along the direction close to and far away from the first lead (341), the second reset spring (43) is used for resetting the driving pipe (42), the driving connecting rod (44) is connected to the inside of the driving pipe (42) in a sliding mode, penetrates out of the switch box body (41) and is used for being jointed with the first lead (341) when a fire occurs, clamping ring (46) set up on drive connecting rod (44) and be located inside switch box (41), drive spring (45) cover is established on drive connecting rod (44) and is located between drive tube (42) and clamping ring (46), drive spring (45) one end sets up on drive tube (42), and the other end sets up on clamping ring (46), drive spring (45) are in compression state always, piston rod (344) are used for conflicting when the conflagration and promote drive tube (42) to slide to first wire (341), first wire (341) are kept away from the one end setting of first wire (341), electro-magnet (32) junction and are worn out the one end of switch box (41) at drive connecting rod (44).

8. A fire safety valve as defined in claim 7, wherein: the positioning device (47) comprises a driving rod (471), a second clamping rod (472) and a third return spring (473), the second clamping rod (472) is perpendicular to the driving connecting rod (44) and is connected in the switch box body (41) in a sliding mode, the second clamping rod (472) abuts against the clamping ring (46), the third return spring (473) maintains the state that the second clamping rod (472) abuts against the clamping ring (46), one end of the driving rod (471) is arranged on the driving pipe (42), a driving hole (476) is formed in the second clamping rod (472), the distance between the driving hole (476) and the driving rod (471) is gradually reduced along the direction that the driving pipe (42) is close to the clamping ring (46), one end, far away from the driving pipe (42), of the driving rod (471) is connected in the switch box body (41) in a sliding mode and penetrates into the driving hole (476), and the radius of the outer side face of the clamping ring (46) is gradually reduced along the direction that the driving pipe (42) is close to the clamping ring (46) And gradually decrease.

9. A fire safety valve as defined in claim 8, wherein: the reset device (5) which drives the driving connecting rod (44) to be far away from the driving spring (45) is arranged on the shell (1), the reset device (5) comprises a driving wedge block (51), a driven wedge block (52), a reset rod (53) and a fourth reset spring (54), the driven wedge block (52) is arranged at one end, far away from the second lead (342), of the driving connecting rod (44), a second guide chamfer (55) is arranged at the upper end of the driven wedge block (52) and one end, close to the switch box body (41), of the reset rod (53) is vertically connected to the shell (1) in a sliding mode and penetrates into the shell (1), the driving wedge block (51) is arranged at one end, penetrating into the shell (1), of the reset rod (53), the driving wedge block (51) is mutually abutted against the second guide chamfer (55), the fourth reset spring (54) is sleeved on the reset rod (53) and is positioned between the driving wedge block (51) and the inner side wall of the shell (1), one end of the fourth return spring (54) is arranged on the driving wedge block (51), and the other end of the fourth return spring is arranged on the inner side wall of the shell (1).

10. A fire safety valve as defined in claim 1, wherein: the surface of fire prevention post (21) towards PLASTIC LAMINATED (11) and the surface that deviates from PLASTIC LAMINATED (11) are the circular conical surface, ventilation hole (12) cooperate with the circular conical side of fire prevention post (21) and contradict.