CN212775622U - Fire prevention valve of high leakproofness - Google Patents
Fire prevention valve of high leakproofness Download PDFInfo
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- CN212775622U CN212775622U CN202021185973.4U CN202021185973U CN212775622U CN 212775622 U CN212775622 U CN 212775622U CN 202021185973 U CN202021185973 U CN 202021185973U CN 212775622 U CN212775622 U CN 212775622U
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Abstract
The utility model relates to a fire prevention valve of high leakproofness, this fire prevention valve includes: the valve body is provided with two inner side walls which are oppositely arranged, and the two inner side walls are respectively provided with a first arc-shaped elastic metal piece and a second arc-shaped elastic metal piece; the rotating shafts are rotatably connected with the inner side wall of the valve body, each rotating shaft is provided with a blade, and two side walls of each blade are movably abutted against the highest position of the first arc-shaped elastic metal part and the highest position of the second arc-shaped elastic metal part respectively; the sealing strip is positioned between two adjacent blades and is provided with a first side edge and a second side edge which are opposite, the first side edge is connected with one blade, and the side edge of the sealing strip, which is adjacent to the second side edge, is movably abutted against the side edge of the other blade; so make two lateral wall arc elastic metal spare's of blade the most high place activity butt, can effectively improve the effect that separates the cigarette back-fire relief to can effectively avoid the blade to block, and it is sealed through the sealing strip between the adjacent blade, further promote sealed effect.
Description
Technical Field
The utility model relates to a fire-proof equipment technical field especially relates to a fire prevention valve of high leakproofness.
Background
The fire damper is installed in an air duct system of the air conditioner, and when a fire disaster occurs, the fire damper is closed to seal an air duct, so that the effects of smoke isolation and fire resistance are achieved.
For guaranteeing fire behavior, the valve body and the blade of fire prevention valve all adopt the PLASTIC LAMINATED preparation, and the valve body of turning over the board formula fire prevention valve is the frame shape, and the blade passes through the rotatable installation of the pivot that sets up in the middle of the both sides on the inside wall of valve body, and pivot and bearing support are on the valve body, and the blade passes through its rotation of actuating mechanism drive for mutual butt between the blade, in order to reach sealed effect. However, if the blade is close to the inner side wall of the frame, although the sealing performance of the fire damper can be ensured, the blade is difficult to rotate, and the blade is easily clamped by the valve body, so that the fire damper cannot be normally closed. If the movable space is reserved between the blade and the frame body, the blade can be conveniently rotated, the blade is prevented from being clamped, but the sealing performance is low, so that the effects of smoke isolation and fire retardation cannot be achieved; and the butt has the gap difficult to avoid between blade and the blade, easily makes the blade warp under high temperature moreover for leak out is more serious between two adjacent blades, makes the leakproofness of fire prevention valve blade not high.
Disclosure of Invention
In view of this, it is necessary to provide a fire damper with high sealing performance against the problem of low sealing performance of the conventional fire damper blade.
A high-sealability fire damper, comprising: the valve body is provided with a first inner side wall and a second inner side wall, the first inner side wall and the second inner side wall are arranged oppositely, a first arc-shaped elastic metal part is arranged on the first inner side wall, a second arc-shaped elastic metal part is arranged on the second inner side wall, a plurality of first through holes are formed in the first arc-shaped elastic metal part, and a plurality of second through holes are formed in the second arc-shaped elastic metal part; a plurality of rotating shafts, wherein a first end of each rotating shaft penetrates through one first through hole to be rotatably connected with a first inner side wall of the valve body, a second end of each rotating shaft penetrates through one second through hole to be rotatably connected with a second inner side wall of the valve body, the rotating shafts are arranged in parallel, each rotating shaft is provided with a blade, two side walls of each blade are movably abutted against the highest position of the first arc-shaped elastic metal part and the highest position of the second arc-shaped elastic metal part respectively, and the first through hole and the second through hole are respectively matched with the rotating shafts; at least one sealing strip, the sealing strip is located adjacent two between the blade, the sealing strip has relative first side and second side, first side with one the blade is connected, in the sealing strip with adjacent side edge of second side and another the side edge activity butt of blade.
In one embodiment, the first side edge is provided with a clamping space, the side edge of one blade is inserted into the clamping space, and the adjacent side edge of the second side edge is abutted against the side edge of the other blade.
In one embodiment, the blade abuts against the outer edge of the clamping space and is welded at the abutting position.
In one embodiment, the second side edge is provided with a sealing sheet which abuts against a side edge of the other of the vanes.
In one embodiment, the second side edge is provided with a clamping space, and the sealing sheet is at least partially clamped in the clamping space.
In one embodiment, the clamping walls on the two sides of the clamping space are movably close to each other, and the sealing sheet is an elastic sheet.
In one embodiment, the first arc-shaped elastic metal piece is an arc-shaped elastic metal sheet; the second arc-shaped elastic metal piece is an arc-shaped elastic metal sheet.
In one embodiment, be provided with first stopper and second stopper on the first inside wall, first stopper with the mutual parallel arrangement of second stopper, first stopper has first lateral wall, the second stopper has the second lateral wall, first lateral wall and second lateral wall set up relatively, the both sides of first arc elastic metal spare respectively with first lateral wall and with the second lateral wall butt.
In one embodiment, a third limiting block and a fourth limiting block are arranged on the second inner side wall, the third limiting block and the fourth limiting block are arranged in parallel, the third limiting block is provided with a third side wall, the fourth limiting block is provided with a fourth side wall, the third side wall and the fourth side wall are arranged oppositely, and two sides of the second arc-shaped elastic metal part are respectively abutted to the third side wall and the fourth side wall.
In one embodiment, the blade is integrally formed with the shaft. According to the fire damper, the first arc-shaped elastic metal part and the second arc-shaped elastic metal part are respectively arranged on the two inner side walls of the valve body, and the two side walls of the blade are respectively movably abutted against the highest positions of the first arc-shaped elastic metal part and the second arc-shaped elastic metal part by rotating the blade; when the valve is closed, the two side walls of the blade are respectively abutted to the highest points of the first arc-shaped elastic metal part and the second arc-shaped elastic metal part, and the side walls of the blade can be better attached to the highest points of the arc-shaped elastic metal parts due to the elasticity of the arc-shaped elastic metal parts, so that a better sealing effect is achieved, and the sealing performance of the fire-proof valve is guaranteed; and when the valve is in the time of opening, two lateral walls and first arc elastic metal spare and the second arc elastic metal spare of blade are in the separation state, so that the rotation of blade, avoid the blade phenomenon that blocks to appear, in addition, through set up the sealing strip between two adjacent blades, the sealing strip is connected as an organic wholely with one of them blade, and with another blade activity butt, in the sealing strip with the adjacent side edge of second side and the side edge butt of blade, make fire prevention valve do not have the gap when closing between two adjacent blades, thereby the sealing performance of fire prevention valve has further been promoted.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of a fire damper with high sealing performance in the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic structural view of a fire damper with high sealing performance according to the present invention;
fig. 4 is a sectional view taken in the direction B-B in fig. 3.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
For example, a high-sealability fire damper is provided, which includes: the valve body is provided with a first inner side wall and a second inner side wall, the first inner side wall and the second inner side wall are arranged oppositely, a first arc-shaped elastic metal part is arranged on the first inner side wall, a second arc-shaped elastic metal part is arranged on the second inner side wall, a plurality of first through holes are formed in the first arc-shaped elastic metal part, and a plurality of second through holes are formed in the second arc-shaped elastic metal part; a plurality of rotating shafts, wherein a first end of each rotating shaft penetrates through one first through hole to be rotatably connected with a first inner side wall of the valve body, a second end of each rotating shaft penetrates through one second through hole to be rotatably connected with a second inner side wall of the valve body, the rotating shafts are arranged in parallel, each rotating shaft is provided with a blade, two side walls of each blade are movably abutted against the highest position of the first arc-shaped elastic metal part and the highest position of the second arc-shaped elastic metal part respectively, and the first through hole and the second through hole are respectively matched with the rotating shafts; at least one sealing strip, the sealing strip is located adjacent two between the blade, the sealing strip has relative first side and second side, first side with one the blade is connected, in the sealing strip with adjacent side edge of second side and another the side edge activity butt of blade.
According to the high-sealing-performance fire damper, the first arc-shaped elastic metal part and the second arc-shaped elastic metal part are respectively arranged on the two inner side walls of the valve body, and the two side walls of the blade are respectively movably abutted against the highest positions of the first arc-shaped elastic metal part and the second arc-shaped elastic metal part by rotating the blade; when the valve is closed, the two side walls of the blade are respectively abutted to the highest points of the first arc-shaped elastic metal part and the second arc-shaped elastic metal part, and the side walls of the blade can be better attached to the highest points of the arc-shaped elastic metal parts due to the elasticity of the arc-shaped elastic metal parts, so that a better sealing effect is achieved, and the sealing performance of the fire-proof valve is guaranteed; and when the valve is in the time of opening, two lateral walls and first arc elastic metal spare and the second arc elastic metal spare of blade are in the separation state, so that the rotation of blade, avoid the blade phenomenon that blocks to appear, in addition, through set up the sealing strip between two adjacent blades, the sealing strip is connected as an organic wholely with one of them blade, and with another blade activity butt, in the sealing strip with the adjacent side edge of second side and the side edge butt of blade, make fire prevention valve do not have the gap when closing between two adjacent blades, thereby the sealing performance of fire prevention valve has further been promoted.
Referring to fig. 1 to 4, in one embodiment, a fire damper with high sealing performance includes: the valve body 10 is provided with a first inner side wall 110 and a second inner side wall 120, the first inner side wall 110 and the second inner side wall 120 are arranged oppositely, a first arc-shaped elastic metal part 210 is arranged on the first inner side wall 110, a second arc-shaped elastic metal part 220 is arranged on the second inner side wall 120, a plurality of first through holes are formed in the first arc-shaped elastic metal part 210, and a plurality of second through holes are formed in the second arc-shaped elastic metal part 220; a plurality of rotating shafts 300, a first end of each rotating shaft 300 passes through one first through hole to be rotatably connected with the first inner side wall 110 of the valve body 10, a second end of each rotating shaft 300 passes through one second through hole to be rotatably connected with the second inner side wall 120 of the valve body 10, the rotating shafts 300 are arranged in parallel, each rotating shaft 300 is provided with a blade 310, two side walls of each blade 310 are movably abutted to the highest position of the first arc-shaped elastic metal part 210 and the highest position of the second arc-shaped elastic metal part 220 respectively, and the first through hole and the second through hole are respectively adapted to the rotating shafts 300; at least one sealing strip 400, sealing strip 400 is located two adjacent between the blade 310, sealing strip 400 has relative first side 410 and second side 420, first side 410 with one the blade 310 is connected, in sealing strip 400 with the adjacent side edge of second side 420 and another the side edge activity butt of blade 310.
Specifically, the two side walls of the blade 310 are movably abutted against the highest point of the first arc-shaped elastic metal member 210 and the highest point of the second arc-shaped elastic metal member 220, respectively, that is, the two side walls of the blade 310 are abutted against or separated from the highest point of the first arc-shaped elastic metal member 210 and the highest point of the second arc-shaped elastic metal member 220, respectively. It should be understood that when the fire damper is in a closed state, two side walls of the vane 310 abut against the highest point of the first arc-shaped elastic metal member 210 and the highest point of the second arc-shaped elastic metal member 220, respectively, to achieve a sealing effect, and when the fire damper is in an open state, two side walls of the vane 310 are separated from the highest points of the first arc-shaped elastic metal member 210 and the second arc-shaped elastic metal member 220, respectively, so that the vane 310 is not interfered by the arc-shaped elastic metal members when rotating, so as to facilitate the rotation of the vane 310.
It should be understood that the rotation connection manner adopted by the two ends of the rotating shaft 300 and the first inner side wall 110 and the second inner side wall 120 respectively is the prior art, which is not the focus of the present invention. The rotation of the shaft 300 to the valve body 10 can be accomplished by one skilled in the art according to conventional techniques in the art.
In the present embodiment, when the side edges of two adjacent vanes 310 abut against each other, each vane 310 seals the inner space of the valve body 10. Further, when the vanes 310 enclose the inner space of the valve body 10, the vanes 310 are arranged in parallel, and the planes of the vanes 310 are overlapped. It is understood that the side edge of the sealing strip 400 adjacent to the second side edge 420 is movably abutted against the side edge of another blade 310, that is, when the blade 310 of the fire damper closes the inner space of the valve body 10, the side edge of the sealing strip 400 is abutted against the side edge of another blade 310, and when the blade 310 of the fire damper rotates to open the inner space of the valve body 10, the side edge of the sealing strip 400 is not abutted against the side edge of another blade 310, that is, the side edge of the sealing strip 400 is separated from the side edge of another blade 310.
In the present embodiment, the side surface of the blade 310 is perpendicular to the two side walls of the blade 310. The number of the first through holes is equal to that of the second through holes, and the number of the first through holes is equal to that of the rotating shafts.
In the fire damper, the first arc-shaped elastic metal part 210 and the second arc-shaped elastic metal part 220 are respectively arranged on the two inner side walls of the valve body 10, and the two side walls of the blade 310 are respectively movably abutted against the highest positions of the first arc-shaped elastic metal part 210 and the second arc-shaped elastic metal part 220 by rotating the blade 310; when the valve is closed, the two side walls of the blade 310 are respectively abutted to the highest points of the first arc-shaped elastic metal part 210 and the second arc-shaped elastic metal part 220, and due to the elasticity of the arc-shaped elastic metal parts, the side walls of the blade 310 can be better attached to the highest points of the arc-shaped elastic metal parts, so that a better sealing effect is achieved, and the sealing performance of the fire valve is guaranteed; and when the valve is in the opening, two side walls of the blade 310 are in a separation state with the first arc-shaped elastic metal part 210 and the second arc-shaped elastic metal part 220, so that the blade 310 can rotate, the blade 310 is prevented from being clamped, in addition, the sealing strip 400 is arranged between two adjacent blades 310, the sealing strip 400 is connected with one of the blades 310 into a whole and movably abutted against the other blade 310, the side edge adjacent to the second side edge 420 in the sealing strip 400 is abutted against the side edge of the blade 310, so that no gap exists between two adjacent blades 310 when the fire damper is closed, and the sealing performance of the fire damper is further improved.
Referring to fig. 1, in one embodiment, the extending direction of the rotating shaft 300 is parallel to the extending direction of the blades 310, and the extending direction of the rotating shaft 300 and the extending direction of the blades 310 are respectively perpendicular to the plane where the rotating direction of the rotating shaft 300 is located, so that each blade 310 can rotate along with the corresponding rotating shaft 300, and the blades 310 can be controlled to seal the inner space of the valve body 10. In one embodiment, each of the rotating shafts 300 is disposed in the middle of one of the blades 310, such that two sides of the blade 310 are symmetrical with respect to the rotating shaft 300, and thus the blades 310 do not touch each other when rotating, thereby preventing the opening or closing of the inner space of the valve body 10. In one embodiment, the high-sealing fire damper further includes a driving mechanism for driving the rotating shaft 300 to rotate.
In order to make the blades 310 stably rotate along with the rotating shaft 300, referring to fig. 1, in one embodiment, the rotating shaft 300 is welded to the blades 310, so that the blades 310 are fixedly connected to the corresponding rotating shaft 300, and when the rotating shaft 300 rotates, the blades 310 stably rotate, which improves the effectiveness of sealing or opening the channel and stabilizes the structure of the whole fire damper. In other embodiments, the shaft 300 is integrally formed with the blade 310, so that the entire fire damper is compact and firm.
In one embodiment, the first side edge is provided with a clamping space, the side edge of one blade is inserted into the clamping space, and the adjacent side edge of the second side edge is abutted against the side edge of the other blade. The card has been seted up to the first side of sealing strip and has been established the space, inserts when the side of blade and locates in the card is established the space, and when the adjacent side edge of the second side of sealing strip and the side edge butt of another blade, the sealing strip has the coincidence with the side butt department of another blade, makes the gap between two blades sealed like this, has promoted the sealed degree of blade greatly. Specifically, the sealing strip includes two sheetmetals, and one of them sheetmetal is bent at one end and is formed first bending to establish the space with forming the card between another sheetmetal the blade is inserted and is located when the card is established in the space, press back first bending for the blade can be comparatively firmly inserted and establish in the card is established in the space.
In one embodiment, the blade abuts against the outer edge of the clamping space and is welded at the abutting position, so that the blade is further stably inserted into the clamping space of the sealing strip. For example, a plurality of welding points are arranged on the line of the abutting position of the blade and the outer edge of the clamping space, so that the blade is ensured to be stably inserted into the clamping space of the sealing strip, and the subsequent dismounting of the sealing strip is facilitated.
In one embodiment, the second side edge is provided with a sealing sheet which abuts against a side edge of the other of the vanes. Make the butt coincidence area of sealing strip and the side of blade can adjust through setting up the gasket, promoted the flexibility that sealed degree was adjusted.
Referring to fig. 1 and fig. 2, in one embodiment, the second side edge 420 is provided with a clamping space 421, and the sealing sheet is at least partially clamped in the clamping space 421, so that the sealing sheet is convenient to arrange and can be replaced, and the sealing time of the sealing strip 400 is prolonged. In one embodiment, the two side walls of the clamping space 421 are movably close to each other, the sealing sheet is an elastic sheet, the width of the clamping space 421 can be adjusted, and the elastic sealing sheet is clamped in the clamping space 421, so that the elastic sealing sheet can extrude the two side walls of the clamping space 421, the sealing strip 400 is abutted against the side edge of the blade 310 more tightly, and the sealing performance of the sealing strip 400 is further improved, that is, the sealing performance of the blade 310 on the internal passage of the valve body 10 is further improved. Specifically, two sheetmetals of sealing strip 400, one of them sheetmetal is buckled at the other end and is formed the second and buckle to form between with another sheetmetal and press from both sides and establish space 421, when the gasket presss from both sides and establishes in space 421, press back the second bending, with the gasket compaction, make the gasket can insert comparatively firmly and establish in space 421, promoted sealed effect.
In one embodiment, the fire damper with high sealing performance further comprises at least two sealing ribs, the valve body is provided with two opposite inner side walls, at least one sealing rib is arranged between one blade and one inner side wall and used for sealing a gap between the two inner side walls, and at least one sealing rib is arranged between the other blade and the other inner side wall and used for sealing a gap between the two inner side walls, so that the sealing performance of the blades on the inner channel of the valve body is further improved.
Referring to fig. 3, in one embodiment, the first arc-shaped elastic metal member 210 is fixedly connected to the first inner sidewall 110 of the valve body 10; the second arc-shaped elastic metal piece 220 is fixedly connected with the second inner side wall 120 of the valve body 10. Specifically, the arc elastic metal member is fixedly connected to the inner side wall of the valve body 10, so that the blade 310 is prevented from moving in the rotating process, and the sealing effect of the fire damper is not affected.
In one embodiment, the first arc-shaped elastic metal piece 210 is an arc-shaped elastic metal sheet; the second arc-shaped elastic metal piece 220 is an arc-shaped elastic metal sheet. Specifically, the second arc-shaped elastic metal part is arranged to be the arc-shaped elastic metal sheet, so that the using amount of metal in the first arc-shaped elastic metal part can be reduced, and the production and manufacturing cost is reduced. For example, the metal sheet is a stainless steel sheet. For another example, the metal sheet is an iron sheet.
Referring to fig. 1 to 4, in one embodiment, a first limiting block 130 and a second limiting block 140 are disposed on the first inner side wall 110, the first limiting block 130 and the second limiting block 140 are disposed in parallel, the first limiting block 130 has a first side wall, the second limiting block 140 has a second side wall, the first side wall and the second side wall are disposed opposite to each other, and two sides of the first arc-shaped elastic metal member 210 are abutted to the first side wall and the second side wall, respectively. In one embodiment, when the first resilient metal member is in a natural state, a distance between two sides of the first resilient metal member is greater than a distance between the first side wall and the second side wall. Specifically, through set up two stopper on the first inside wall 110 at valve body 10, the both sides of first arc elastic metal spare 210 respectively with first lateral wall and with the second lateral wall butt for being in bending deformation state of first arc elastic metal spare 210, thereby can avoid the outside expansion of first arc elastic metal spare. Since the rotating shaft 300 passes through the first passage, a limiting effect is achieved, and the first arc-shaped elastic metal part 210 is prevented from moving back and forth. Further, the side wall of the blade 310 abuts against the highest position of the first arc-shaped elastic metal member 210, so that the first arc-shaped elastic metal member 210 is prevented from sliding up and down. Therefore, the first arc-shaped elastic metal piece 210 can be fixedly arranged on the first inner side wall 110 by arranging the two limiting blocks, and the fire damper is convenient to install.
Referring to fig. 4, in one embodiment, the first stopper 130 is integrally formed with the valve body 10, and the second stopper 140 is integrally formed with the valve body 10.
Referring to fig. 1 to 4, in one embodiment, a third limiting block 150 and a fourth limiting block 160 are disposed on the second inner sidewall 120, the third limiting block 150 and the fourth limiting block 160 are disposed in parallel, the third limiting block 150 has a third sidewall, the fourth limiting block 160 has a fourth sidewall, the third sidewall and the fourth sidewall are disposed opposite to each other, and two sides of the second arc-shaped elastic metal member 220 are abutted to the third sidewall and the fourth sidewall, respectively. Specifically, the first arc-shaped elastic metal piece 210 can be fixedly arranged on the first inner side wall 110 by arranging two limit blocks, and the installation of the fire damper is convenient. The specific principle has been explained in detail above, and the detailed description of the implementation is omitted.
In one embodiment, the third limiting block is integrally formed with the valve body, and the fourth limiting block is integrally formed with the valve body. Specifically, the third limiting block 150 and the fourth limiting block are integrally formed with the valve body, so that the production efficiency can be improved.
In one embodiment, any two adjacent rotating shafts are spaced at equal intervals.
In one embodiment, a first limiting block and a second limiting block are arranged on the first inner side wall, the first limiting block and the second limiting block are arranged in parallel, and the first limiting block and the second limiting block are arranged inside the first arc-shaped elastic metal part and movably abutted against the inner side wall of the first arc-shaped elastic metal part. In one embodiment, a third limiting block and a fourth limiting block are arranged on the second inner side wall, the third limiting block and the fourth limiting block are arranged in parallel, and the third limiting block and the fourth limiting block are arranged inside the second arc-shaped elastic metal part and movably abutted against the inner side wall of the second arc-shaped elastic metal part. Specifically, when first arc elastic metal part is not receiving external force, the width of first arc elastic metal part both sides is greater than the distance between first stopper and the second stopper, then first stopper and second stopper set up in first arc elastic metal part's inside, the lateral wall and the first arc elastic metal part activity butt of first stopper and second stopper to carry on spacingly to first elastic metal part, prevent that first elastic metal part from removing. And the blade is when extrudeing first elastic metal spare, because when the both sides of first elastic metal spare outwards expand, do not have the object to restrict it to make first elastic metal spare can deform better, take place the phenomenon of blocking with further avoiding the blade. So, can reach the effect that separates the cigarette back-fire relief equally through such mode of setting up, also can prevent that the blade card from leading to the unable normal rotation phenomenon of blade at first elastic metal spare. The setting principle of the second arc-shaped elastic metal part is the same as that of the first arc-shaped elastic metal part, and the description is omitted.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A fire damper with high sealing performance, characterized in that the fire damper comprises:
the valve body is provided with a first inner side wall and a second inner side wall, the first inner side wall and the second inner side wall are arranged oppositely, a first arc-shaped elastic metal part is arranged on the first inner side wall, a second arc-shaped elastic metal part is arranged on the second inner side wall, a plurality of first through holes are formed in the first arc-shaped elastic metal part, and a plurality of second through holes are formed in the second arc-shaped elastic metal part;
a plurality of rotating shafts, wherein a first end of each rotating shaft penetrates through one first through hole to be rotatably connected with a first inner side wall of the valve body, a second end of each rotating shaft penetrates through one second through hole to be rotatably connected with a second inner side wall of the valve body, the rotating shafts are arranged in parallel, each rotating shaft is provided with a blade, two side walls of each blade are movably abutted against the highest position of the first arc-shaped elastic metal part and the highest position of the second arc-shaped elastic metal part respectively, and the first through hole and the second through hole are respectively matched with the rotating shafts;
at least one sealing strip, the sealing strip is located adjacent two between the blade, the sealing strip has relative first side and second side, first side with one the blade is connected, in the sealing strip with adjacent side edge of second side and another the side edge activity butt of blade.
2. The fire damper with high sealing performance according to claim 1, wherein the first side edge is provided with a clamping space, the side edge of one blade is inserted into the clamping space, and the adjacent side edge of the second side edge is abutted against the side edge of the other blade.
3. The fire damper with high sealing performance according to claim 2, wherein the blade abuts against an outer edge of the clamping space and is welded at the abutting position.
4. The fire damper with high sealing performance according to claim 2, wherein the second side edge is provided with a sealing sheet, and the sealing sheet abuts against the side edge of the other blade.
5. The fire damper with high sealing performance according to claim 4, wherein a clamping space is formed at the second side edge, and the sealing sheet is at least partially clamped in the clamping space.
6. The fire damper with high sealing performance according to claim 5, wherein the clamping walls on two sides of the clamping space are movably close to each other, and the sealing sheet is an elastic sheet.
7. The fire damper with high sealing performance as claimed in claim 1, wherein the first arc-shaped elastic metal member is an arc-shaped elastic metal sheet; the second arc-shaped elastic metal piece is an arc-shaped elastic metal sheet.
8. The fire damper with high sealing performance according to claim 7, wherein a first limiting block and a second limiting block are disposed on the first inner side wall, the first limiting block and the second limiting block are disposed in parallel, the first limiting block has a first side wall, the second limiting block has a second side wall, the first side wall and the second side wall are disposed opposite to each other, and two sides of the first arc-shaped elastic metal member are abutted to the first side wall and the second side wall respectively.
9. The fire valve of claim 7, wherein a third limiting block and a fourth limiting block are disposed on the second inner sidewall, the third limiting block and the fourth limiting block are parallel to each other, the third limiting block has a third sidewall, the fourth limiting block has a fourth sidewall, the third sidewall and the fourth sidewall are disposed opposite to each other, and two sides of the second arc-shaped elastic metal member are abutted to the third sidewall and the fourth sidewall, respectively.
10. The fire damper with high sealing performance as claimed in claim 1, wherein the blade is integrally formed with the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021185973.4U CN212775622U (en) | 2020-06-23 | 2020-06-23 | Fire prevention valve of high leakproofness |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021185973.4U CN212775622U (en) | 2020-06-23 | 2020-06-23 | Fire prevention valve of high leakproofness |
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| Publication Number | Publication Date |
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| CN212775622U true CN212775622U (en) | 2021-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738497A (en) * | 2022-02-21 | 2022-07-12 | 致和环境科技（江苏）有限公司 | Flow and direction regulating valve |
-
2020
- 2020-06-23 CN CN202021185973.4U patent/CN212775622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738497A (en) * | 2022-02-21 | 2022-07-12 | 致和环境科技（江苏）有限公司 | Flow and direction regulating valve |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230928 Address after: B-5-1, Jinlu Industrial Park, 199 Haiyu Middle Line, Haikou City, Hainan Province, 570100 Patentee after: Hainan Xinshengyuan Air Conditioning and HVAC Engineering Co.,Ltd. Patentee after: Haikou Shengyuan fire fighting equipment Co.,Ltd. Address before: 570100 B-5, Jinlu Industrial Zone, 199 Haiyu midline, Xiuying District, Haikou City, Hainan Province Patentee before: Haikou Shengyuan fire fighting equipment Co.,Ltd. |
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| TR01 | Transfer of patent right |