CN205639723U - Can observe fire prevention valve of degree of opening and shutting - Google Patents

Abstract

The utility model provides a can observe fire prevention valve of degree of opening and shutting, includes the valve body and rotates the valve block of ground setting in the valve body, is provided with the housing outside the valve body, its characterized in that: have mobilizable indicator at the internally mounted of housing, be equipped with the observation window that is used for observing indicator on the housing, indicator is the outlying observation window along with closing of valve block, and indicator is close to the observation window along with opening of valve block. The utility model has the advantages of: should be able to prevent fires the valve through setting up mobilizable indicator in that the housing is inside, set up the observation window that can observe indicator on the housing after, just can show the state of opening of valve block from the observation window directly perceivedly, not only simple structure but also observation are very convenient. In addition, the valve block centre of gravity place of the valve of should preventing fires can change through removing the balancing weight, and convenience of customers adjusts to best effect with the performance that opens and shuts of valve block when just adorning, promote the fire prevention valve the airtight of the normal condition of ventilating with open the performance, reduce effectively that the flue blocks up or airtight not tight phenomenon takes place.

Description

A kind of fire resisting damper of observable opening degree

Technical field

This utility model relates to a kind of fire resisting damper, especially relate to a kind of can the fire resisting damper of observable opening degree.

Background technology

In the kitchen using longitudinally public gas flue, in order to prevent the oil smoke in gas flue from blowing back in kitchen, in oil pumping Giving vent to anger of cigarette machine is both provided with device as check valve for flue between the mouth of pipe and public gas flue.Existing flue is non-return Valve generally comprises the oil smoke passage being made up of shell, and this oil smoke passage has relative air inlet and air outlet, on air inlet Connecting the mouth of pipe of giving vent to anger of smoke exhaust ventilator, air outlet extend in public gas flue, and being provided with at oil smoke passage air outlet can The valve block opened and closed, valve block is arranged on the inwall of oil smoke passage by horizontally disposed valve block axis of rotation.When not using oil During cigarette machine, valve block is in the closed position due to self gravitation, and valve block covers at air-out oral area；When using lampblack absorber, valve block In an open position, valve block is away from air outlet.Due to many public public gas flues of longitudinal direction of user, once one one Family breaking out of fire, substantial amounts of high-temperature harmful gas pours in longitudinal public gas flue, if only closing flue the most not in time Valve block in inverse valve, these substantial amounts of high-temperature harmful gas can be entered by the oil smoke passage of check valve for flue and be currently in use oil In the user family of cigarette machine, thus threaten the life security of resident family.

Prior art has the various fire-proof valve structure with valve block, as Patent No. ZL 200910017260.9 (authorizes Notification number is CN 101608702 A) " a kind of check fire valve for flue " disclosed in Chinese invention patent application, should Check fire valve for flue includes the oil smoke passage being made up of shell, and oil smoke passage has relative air inlet and air outlet, oil Being provided with valve block in cigarette channel, valve block is the two panels being oppositely arranged, and valve block is spindle rotationally arranged in oil smoke by valve block rotating shaft In passage, in oil smoke passage, it is provided with the stop making two panels valve block can only open to air outlet direction near air inlet one end Part, is provided with near air inlet side in oil smoke passage and air inlet is divided into two-part longitudinally disposed connection strap, and valve block turns Axle is near connection strap, and connection strap can make the high temperature shutoff device of valve block positive closing towards being provided with on the side of air outlet. Although, this fire resisting damper can be closed under in public gas flue, flue-gas temperature is in the highest state of emergency by force, uses Safe and reliable, but, user in the outside of fire resisting damper be cannot be visually observed that valve block be in open mode or Closed mode.

It addition, the normally-open of the valve block of existing fire resisting damper is all the stream pressure produced by boasting by cigarette machine, airtight dependence valve block Gravity, the most general valve block closed position must have certain angle could rely on the suffered gravity of valve block itself with gravity direction (valve block is the heaviest in theory, and intermediate seal circle pressure is the biggest, and airtight performance is more to ensure airtight performance when closing Good, the probability of the valve block open and close without reason simultaneously caused by gas disturbance in flue is the least), but, same angle The valve block of degree assembling itself is the heaviest, and the difficulty that cigarette machine air-flow out opens it is the biggest, and different cigarette machine (air quantity, Wind pressure property is different) different with installation form (mainly smoke pipe length is lost with the airflow pressure caused that turns round) can make In the actual pipeline of different user family there is bigger change in pressure and the flow of air-flow.Traditional valve block pattern is difficult to same Time take into account the air channel that user family situation is complicated so that airtight in the case of normal ventilation of fire resisting damper or open hydraulic performance decline.

Utility model content

First to be solved in the utility model technical problem is that for above-mentioned prior art present situation, it is provided that a kind of structure letter Singly, the fire resisting damper of convenient observable opening degree is observed.

Second to be solved in the utility model technical problem is that for above-mentioned prior art present situation, it is provided that a kind of energy is simultaneously Take into account the fire resisting damper of the observable opening degree of the airtight of valve block and unlatching performance.

The technical scheme that above-mentioned first technical problem of this utility model solution is used is: the fire prevention of this observable opening degree Valve, including valve body and the valve block that is rotatably arranged in valve body, described valve body be outside equipped with case, it is characterised in that: Internally installed at described case has mobilizable indication piece, is provided with the sight for observing described indication piece on described case Examine window, described indication piece along with valve block closedown and away from observation window, described indication piece leans on along with opening of valve block Nearly observation window.

Indication piece can have multiple mounting structure, it is preferable that described observation window is located at the top of described case, described finger Showing that part is located at the lower section of described observation window, described indication piece includes slider block, slide bar and elastic component, and described slide bar is described Maintain under elastic component effect and move down and away from the trend of observation window, under fire resisting damper closed mode, described slide bar exists It is moved downward to the position away from described observation window under described elastic component and slide bar self gravitation effect, opens shape at fire resisting damper Under state, the fire prevention valve block after opening acts on described slide bar and makes slide bar be moved upward to the position near described observation window.

Guiding to move slide bar, have guide through hole on described slider block, described slide bar is located in described In guide through hole and can slide up and down by relative slider block in this guide through hole.

Further preferably, the inwall of described guide through hole has the first stopper slot run through up and down and upper end open and under The second stopper slot that end seal is closed, is provided with the first retaining convex rib and second limit convex of genesis analysis on the outer wall of described slide bar Muscle, described first retaining convex rib and the second retaining convex rib are the most spacing in the first described stopper slot and the second stopper slot. So, slide bar can not rotate when sliding up and down, and, the bottom of the second stopper slot can stop slide bar to move further downward Dynamic.

Elastic component can have various structures, it is preferable that described elastic component support for elasticity be located at described observation window and slide bar it Between spring.

As another preferred version of indication piece, the top of described case is located at by described observation window, and described indication piece is solid The fixing bar being scheduled on described valve block, described fixing bar turns to the position near observation window along with described opening of valve block Putting, described fixing bar turns to the position away from observation window along with the cut out of described valve block.Program simple in construction, with Sample can observe the folding condition of valve block outside case intuitively.

In order to make fixing snap-on be located in shroud body securely, described case includes shroud body and for pacifying The smoke pipe connecting portion of dress user's side smoke tube, described shroud body abuts on the base plate of fire resisting damper, installs on described base plate There is fixing snap-on, the lateral wall of shroud body is provided with the spacing block set for catching on described fixing snap-on.

In order to the smoke pipe installation site of user side is carried out spacing, the lateral wall of described smoke pipe connecting portion is provided with for right The installation site of smoke pipe carries out spacing spacing preiection.So, when installing smoke pipe, smoke pipe set smoke-intake pipe connecting portion pusher Just cannot be pushed further into spacing preiection position, then can seal with sealant tape, thus improve smoke pipe and cigarette The sealing property of pipe jointing part junction.

The technical scheme that above-mentioned second technical problem of this utility model solution is used is: this fire resisting damper is on described valve block The weight arm with pre-elastic force is installed, is arranged on the middle position of valve block the inner ends thereof of described weight arm, described Balancing weight is fixed on the outer end of described weight arm, and is pressed on the table of described valve block under the pre-elastic force effect of weight arm all the time Face.During as such, it is desirable to regulate the position of centre of gravity of fire resisting damper, it is only necessary to rotary gravity arm, regulate very convenient, clever Live.

Compared with prior art, the utility model has the advantage of: this can fire resisting damper movable by arranging at casing interior Indication piece, after case arranges the observation window that can observe indication piece, from observation window, just can show valve intuitively The opening of sheet, is not only simple in structure and observes very convenient.Additionally, the valve block position of centre of gravity of this fire resisting damper can To be changed by self-balanced upper rotary, facilitate user when just dress by the folding adjusting performance of valve block to optimum efficiency, can be same Time take into account the air channel that user family situation is complicated, promote fire resisting damper and at the airtight of normal ventilation situation and open performance, effectively subtract Few flue blockage or the tightest airtight phenomenon occur.

Accompanying drawing explanation

Fig. 1 is this utility model embodiment one structural representation under valve block closed mode；

Fig. 2 is the structural representation of another angle of fire resisting damper shown in Fig. 1；

Fig. 3 is the perspective exploded view of fire resisting damper shown in Fig. 1；

Fig. 4 is the observation window perspective exploded view with slide rod device of this utility model embodiment one；

Fig. 5 is this utility model embodiment one structural representation under valve block open mode；

Fig. 6 is the sectional view of fire resisting damper shown in Fig. 5；

Fig. 7 is the structural representation after fire resisting damper shown in Fig. 5 removes base plate；

Fig. 8 is this utility model embodiment one structural representation under balancing weight down adjustment state；

Fig. 9 is this utility model embodiment one structural representation under balancing weight up adjustment state；

Figure 10 is this utility model embodiment two structural representation under valve block closed mode；

Figure 11 is this utility model embodiment two structure sectional view under valve block open mode.

Detailed description of the invention

Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.

Embodiment one:

As shown in Figures 1 to 4, the fire resisting damper in the present embodiment includes base plate 1, valve body 2, valve block 3, case 4, joins The assemblies such as pouring weight 5, weight arm 6, observation window 7, slide rod device 8 and fixing snap-on 9.Base plate 1 is by being embedded in user On hot wall, case 4 is arranged on base plate 1 and is located at outside valve body 2, and valve block 3 is rotatably arranged on valve body 2, The mounting structure of base plate 1, valve body 2 and valve block 3 is prior art, does not launch at this to describe.

In the present embodiment, observation window 7 is arranged on the top of case 4, and the cover plate of observation window 7 uses glass or acrylic Deng transparent material.Slide rod device 8 is arranged on the inside of case 4 and is positioned at the lower section of observation window 7, and slide rod device 8 is concrete Including slider block 81, slide bar 82 and spring 83, slide bar 82 is arranged on slider block 81 and can glide on relative slider block Dynamic, elastic the supporting of spring 83 is located between observation window 7 and slide bar 82 top, and slide bar 82 maintains under spring 83 acts on Move down and away from the trend of observation window 7.

Under fire resisting damper closed mode, slide bar 82 is moved downward to away from sight under spring 83 and slide bar self gravitation effect Examining the position of window 7, under fire resisting damper open mode, the valve block 3 after opening acts on slide bar 82, and valve block 3 is to slide bar The active force of 82 overcomes the elastic force of spring 83 and the gravity of slide bar 82 self and makes slide bar be moved upward near observation window 7 Position.After particularly slide bar 82 is designed with the slide bar of color, when valve block 3 is opened, can be by observing Window 7 sees slide bar 82, puts in place such that it is able to know that valve block 3 has already turned on intuitively.So, be equivalent to can for slide bar 82 Movable indication piece, can intuitively observe the opening degree of valve block 3 by the observation window on case 4.

Slide bar 82 in the present embodiment relatively can only move up and down and can not rotate by slider block 81, specifically, is sliding Having guide through hole 810 on pole socket 81, slide bar 82 is located in guide through hole 810 and can be in this guide through hole 810 Slider block 81 relatively slides up and down.The inwall of guide through hole 810 has the first stopper slot 811 He run through up and down Upper end open and the second stopper slot 812 of lower end closed, be provided with the first limit convex of genesis analysis on the outer wall of slide bar 82 Muscle 821 and the second retaining convex rib 822, the first retaining convex rib 821 and the second retaining convex rib 822 are the most spacing in the first limit In position groove 811 and the second stopper slot 812.So, coordinating by the first stopper slot 811 and the first retaining convex rib 821 Slide bar can be made can not to rotate the when of sliding up and down, by coordinating of the second stopper slot 812 and the second retaining convex rib 822 When slide bar can be made to slide down to lowest order, collide and can not continue slide downward in the lower end with the second stopper slot.

In the present embodiment, case 4 is integrated part and includes shroud body 41 and smoke pipe connecting portion 42.Wherein, case is originally Body 41 abuts on base plate 1, and shroud body 41 is the rectangular configuration being located between base plate 1 and smoke pipe connecting portion 42, Valve block can be reduced after using shroud body 41 and take the area of flue, reduce the resistance to flue after it opens up. Smoke pipe connecting portion 42 is used for installing user's side smoke tube, is provided with fixing snap-on 9, in shroud body 41 on base plate 1 Lateral wall be provided with and fix the spacing block set 43 that snap-on matches, during installation, fixing snap-on 9 hooks at spacing block set Case 4 is made to be arranged on base plate 1 on 43.It addition, be provided with for smoke pipe on the lateral wall of smoke pipe connecting portion 42 Installation site carry out spacing spacing preiection 44, when installing smoke pipe, smoke pipe set smoke-intake pipe connecting portion 42 pusher is to spacing Protruding 44 positions just cannot be pushed further into, and then can seal with sealant tape, thus improve smoke pipe and smoke pipe The sealing property of connecting portion junction.

Balancing weight 5 and weight arm 6 can change the position of centre of gravity of valve block 3 after cooperating.Specifically, weight arm 6 has Having pre-elastic force, the inner of weight arm 6 is rotatably arranged at the middle position of valve block 3 by screw 10, and balancing weight 5 is pacified It is contained in the outer end of weight arm 6 and under the effect of the pre-elastic force of weight arm, is pressed on the surface of valve block 3.So, balancing weight 5 can carry out 360 ° of rotations around screw 10, it is only necessary to rotary gravity arm 6 just can make balancing weight 5 relative to valve block 3 Produce mobile, thus change the position of centre of gravity of valve block 3.Valve block 3 relies on gravity normal switching-off, and the existence of balancing weight 5 can So that the pressure to the sealing gasket 31 at valve block 3 edge increases when valve block 3 is closed, close tighter.

As shown in Figures 5 to 7, compare suitable length at user family's smoke pipe and turn round generally, on valve block 3 Balancing weight 5 is centrally located for standard condition, and cigarette machine just can blow afloat shake-up slide bar 82 upward sliding valve block 3, Coloured slide bar can be seen from observation window 7, i.e. may determine that valve block 3 standard-sized sheet.Simultaneously because fire resisting damper mechanism does not does Changing, the counterweight change of valve block nor affects on its fire-proof function, and therefore fire-proof function when urgent fire the most normally makes With.

As shown in Figure 8, if the assembling of user family smoke pipe is the shortest, how do not turn round user neighbours or upper the most straight simultaneously Connect that to alter taste more severe, it may be considered that down being regulated by balancing weight 5 debugging when, the pressure increasing it realizes increasing Sealing property (also must guarantee to see that valve block is normally-open by window)

If as it is shown in figure 9, user family's smoke pipe is long, turning round and cause comparison of resistance big more, it is understood that there may be cigarette machine is discharged Gas valve block cannot be opened to maximum position, at this time need up to regulate balancing weight 5, reduce weight arm 6 Effect, increases its air-flow by performance, the preferential smoke discharging effect protecting positive range hood.

Embodiment two:

As shown in Figure 10 and Figure 11, the top of case 4 is located at by the observation window 7 in the present embodiment, and indication piece uses fixing Fixing bar 84 on valve block 3, fixing bar 84 is with valve block 3 synchronous axial system, and when valve block 3 is opened, fixing bar 84 is with valve Sheet turns to the position near observation window 7, and user can pass through observation window 7 from case 4 intuitively to fixing bar 84, When valve block 3 is closed, fixing bar 84 turns to the position away from observation window 7 along with valve block, makes the user cannot be from case 4 See outward fixing bar 84.In the present embodiment, other structures of fire resisting damper are identical with the fire-proof valve structure in embodiment one, at this The most reinflated description.

The foregoing is only preferred implementation of the present utility model, it is noted that for those of ordinary skill in the art Speech, without departing under principle premise of the present utility model, can carry out multiple remodeling or improvement to this utility model, such as, Bar-shaped trough or bar hole can also be offered on the weight arm of embodiment two, make the balancing weight can be along bar-shaped trough or bar hole Mobile, again can be with weight arm synchronous axial system, within these are regarded as protection domain of the present utility model.

Claims (8)

1. the fire resisting damper of an observable opening degree, including valve body (2) and the valve block (3) that is rotatably arranged in valve body (2), described valve body (2) be outside equipped with case (4), it is characterized in that: internally installed at described case (4) has mobilizable indication piece, described case (4) is provided with the observation window (7) for observing described indication piece, described indication piece along with valve block (3) closedown and away from observation window (7), described indication piece along with opening of valve block (3) near observation window (7).

The fire resisting damper of observable opening degree the most according to claim 1, it is characterized in that: the top of described case (4) is located at by described observation window (7), described indication piece is located at the lower section of described observation window (7), described indication piece includes slider block (81), slide bar (82) and elastic component, described slide bar (82) maintains under described elastic component effect and moves down and away from the trend of observation window (7), under fire resisting damper closed mode, described slide bar (82) is moved downward to the position away from described observation window (7) under described elastic component and slide bar self gravitation effect, under fire resisting damper open mode, fire prevention valve block (3) after opening acts on described slide bar (82) and makes slide bar be moved upward to the position near described observation window (7).

The fire resisting damper of observable opening degree the most according to claim 2, it is characterized in that: have guide through hole (810) on described slider block (81), described slide bar (82) is located in described guide through hole (810) and above and can slide up and down by relative slider block (81) in this guide through hole (810).

The fire resisting damper of observable opening degree the most according to claim 3, it is characterized in that: on the inwall of described guide through hole (810), have second stopper slot (812) of the first stopper slot (811) and upper end open and the lower end closed run through up and down, the outer wall of described slide bar (82) is provided with the first retaining convex rib (821) and second retaining convex rib (822) of genesis analysis, described first retaining convex rib (821) and the second retaining convex rib (822) are the most spacing in described the first stopper slot (811) and the second stopper slot (812).

The fire resisting damper of observable opening degree the most according to claim 2, it is characterised in that: described elastic component is the elastic spring (83) supporting and being located between described observation window (7) and slide bar (82).

The fire resisting damper of observable opening degree the most according to claim 1, it is characterized in that: the top of described case (4) is located at by described observation window (7), described indication piece is the fixing bar (84) being fixed on described valve block (3), described fixing bar (84) turns to the position near observation window (7) along with opening of described valve block (3), and described fixing bar (84) turns to the position away from observation window (7) along with the closedown of described valve block (3).

The fire resisting damper of observable opening degree the most according to claim 1, it is characterized in that: described case (4) includes shroud body (41) and is used for installing the smoke pipe connecting portion (42) of user's side smoke tube, described shroud body (41) abuts on base plate (1), base plate (1) is provided with fixing snap-on (9), the lateral wall of shroud body (41) is provided with the spacing block set (43) for catching on described fixing snap-on (9).

The fire resisting damper of observable opening degree the most according to claim 7, it is characterised in that: it is provided with on the lateral wall of described smoke pipe connecting portion (42) for the installation site of smoke pipe being carried out spacing spacing preiection (44).