CN116447368A - Two-way protection big amount of wind antiknock valve - Google Patents
Two-way protection big amount of wind antiknock valve Download PDFInfo
- Publication number
- CN116447368A CN116447368A CN202210021212.2A CN202210021212A CN116447368A CN 116447368 A CN116447368 A CN 116447368A CN 202210021212 A CN202210021212 A CN 202210021212A CN 116447368 A CN116447368 A CN 116447368A
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- Prior art keywords
- valve
- antiknock
- end plate
- leaf
- blade
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- Pending
Links
- 230000035939 shock Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims 3
- 230000000712 assembly Effects 0.000 abstract description 3
- 238000000429 assembly Methods 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 description 13
- 238000004880 explosion Methods 0.000 description 11
- 230000002457 bidirectional effect Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/363—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position the closure members being rotatable or pivoting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention discloses a bidirectional-protection large-air-volume antiknock valve. The valve comprises a valve frame assembly and valve blade assemblies, wherein the valve blade assemblies are arranged in a group, and a pair of limit baffles (3) are arranged. Each shaft (4) divides a valve blade (5) connected with the shaft into a lower half part and an upper half part along the axial direction. A front baffle (16) is arranged on the upper part of the inner side surface of the rectangular frame and adjacent to the outdoor side (21); a tailgate (17) is provided adjacent to the indoor side (22) at the lower part of the inner side surface of the rectangular frame. When the valve blades are in an open state, the lower part of the lower half part of the upper valve blade overlaps with the projection of the upper part of the upper half part of the lower valve blade on the vertical plane passing through the shaft, the upper part of the upper half part of the uppermost valve blade overlaps with the projection of the front baffle on the vertical plane passing through the shaft, and the lower part of the lower half part of the lowermost valve blade overlaps with the projection of the rear baffle on the vertical plane passing through the shaft. The invention is mainly used for antiknock buildings in petrochemical industry and the like.
Description
Technical Field
The invention belongs to the technical field of ventilation air conditioners, and relates to a large-air-volume antiknock valve with bidirectional protection.
Background
In recent years, with the rapid development of petrochemical industry in China, as an antiknock control room of a nerve center of petrochemical enterprises, an antiknock structure is adopted in a building, and in order to resist sudden explosion outside, antiknock valves are required to be installed at an air inlet and an air outlet of a ventilation air conditioner arranged on an antiknock outer wall so as to prevent explosion shock waves from being transmitted into the room through a hole on the outer wall, thereby protecting the safety of indoor workers and equipment. Under normal conditions, the antiknock valve is in an open state and is used for normal air intake and exhaust of the ventilation air-conditioning system. When outdoor explosion occurs and destructive explosion shock waves arrive, the opening degree or closing of the anti-explosion valve can be automatically adjusted according to the overpressure, and damage of the explosion shock waves to the inside of the building is blocked. However, when the positive pressure impact passes, the explosion center is rapidly concentrated to the center due to the air loss, and a negative pressure impact is immediately formed to the periphery. Therefore, it is necessary to immediately block the impact caused by the negative pressure shock wave.
Chinese patent CN111927998A discloses an antiknock valve for protecting large air volume in two directions, which separates positive pressure shock wave and negative pressure shock wave by connecting two sets of valve blades in series. The structure is relatively complex, and the later maintenance workload is large. Moreover, because the space between valve blades of the large-air-quantity antiknock valve is larger, the valve blades cannot be rainproof when normally opened, and a rainproof shutter or other rainproof devices are additionally arranged.
Disclosure of Invention
The invention aims to provide a large-air-volume antiknock valve with bidirectional protection, which solves the problems that the existing large-air-volume antiknock valve with bidirectional protection is complex in structure and can not prevent rain when a valve blade is normally opened.
In order to solve the problems, the invention adopts the following technical scheme: the utility model provides a big amount of wind antiknock valve of two-way protection, including valve frame subassembly and valve leaf subassembly, valve frame subassembly includes the rectangle frame that is enclosed by upper end plate, lower end plate, left end plate and right end plate, set up limit baffle on upper end plate and lower end plate internal surface, valve leaf subassembly includes the axle, with the valve leaf that the axle links to each other and locate a rotatory spacer, first connecting rod in the left end plate outside, valve leaf subassembly is still including locating second rotatory spacer in the right end plate outside, spring and locating piece, every axle is divided into lower half and last half with its continuous valve leaf along the axial, its characterized in that: the valve leaf subassembly sets up a set of, and limit baffle sets up a pair of, and the upper portion of rectangle frame medial surface is equipped with preceding baffle with outdoor side is adjacent, and the lower part of rectangle frame medial surface is equipped with the backplate with indoor side is adjacent, and when the valve leaf was in the open mode, between the adjacent valve leaf, the projection of upper valve leaf lower half's lower part and the upper portion of below valve leaf upper half on the vertical plane through the axle overlapped, and the upper portion of the valve leaf upper half of the top overlaps with the projection of preceding baffle on the vertical plane through the axle, and the lower part of the valve leaf lower half of the bottommost overlaps with the projection of backplate on the vertical plane through the axle.
The invention has the following beneficial effects: 1. the antiknock valve is only provided with a group of valve leaf components, has simple structure, and can reduce the manufacturing cost, the later maintenance workload and the later maintenance cost; 2. the valve leaf can be rainproof (see the description of the detailed description of the embodiment part) in a normal opening state, and a rainproof shutter or other rainproof devices do not need to be additionally arranged.
The antiknock valve has a bidirectional protection function, and can rapidly separate positive pressure shock waves and negative pressure shock waves; the flow area is large, and the pressure drop under the condition of large air volume flow is small; the method is mainly used for antiknock buildings in petrochemical industry and the like.
The invention will be described in further detail with reference to the drawings and the detailed description. The drawings and detailed description are not intended to limit the scope of the invention as claimed.
Drawings
FIG. 1 is a schematic perspective view of a bi-directional protected large air volume antiknock valve in a ventilation state;
FIG. 2 is a front view of a bi-directionally protected high volume blast resistant valve of the present invention in a vent condition;
FIG. 3 is a top view of a bi-directionally protected large volume blast resistant valve of the present invention in a vent state;
FIG. 4 is a left side view of a bi-directionally protected large volume blast resistant valve of the present invention in a vent condition;
FIG. 5 is a left side view of a shield of the bi-directionally protected high volume blast resistant valve of the present invention in a vent state;
FIG. 6 is a right side view of a shield of the bi-directionally protected high volume blast resistant valve of the present invention in a vent state;
FIG. 7 is a cross-sectional view of a bi-directionally protected high volume blast resistant valve of the present invention in a vented condition (cross-section at position A-A in FIG. 2);
FIG. 8 is a schematic perspective view of a bi-directionally protected large volume blast antiknock valve of the present invention in an antiknock state;
FIG. 9 is a left side view of a de-shield of the bi-directionally protected large volume blast resistant valve of the present invention in an antiknock condition;
FIG. 10 is a right side view of a de-shield of the bi-directionally protected high volume blast resistant valve of the present invention in an antiknock condition;
FIG. 11 is a schematic illustration of a bi-directionally protected large volume blast resistant valve of the present invention in an antiknock state blocking positive pressure shock waves (shown in section at A-A in FIG. 2);
FIG. 12 is a schematic view of a bi-directionally protected high volume blast resistant valve of the present invention in an antiknock state blocking negative pressure shock waves (shown in section at A-A in FIG. 2);
FIG. 13 is a right side view of a shield of another bi-directionally protected high volume blast resistant valve of the present invention in a vent state;
fig. 14 is a cross-sectional view (cross-sectional view at A-A position in fig. 2) of another bi-directionally protected high volume blast resistant valve of the present invention in a ventilation state.
In fig. 1 to 14, the same reference numerals denote the same technical features. Reference numerals denote: 101-an upper end plate; 102-a lower end plate; 201—left end plate; 202-right end plate; 3-a limit baffle; 4-axis; 5-valve blade; 6-a first rotary positioning sheet; 7-a first link; 8-a second rotary positioning sheet; 9, positioning bolts; 10-tightening bolts; 11-a spring; 12-positioning blocks; 12 a-tightening bolts and nuts; 13-guard board; 14-a connecting rod bolt; 15-a locating pin; 16-front baffle; 17-a tailgate; 18-a second link; 19-a chute; 20-bolt holes; 21-outdoor side; 22-indoor side.
Detailed Description
Fig. 1, 2, 3, 4, 5, 6, 7, 13 and 14 are schematic structural views of a bi-directional protected large-air-volume antiknock valve (simply referred to as antiknock valve) in a ventilation state (valve blade 5 is normally opened). The antiknock valve includes a valve frame assembly and a set of valve vane assemblies. The valve frame assembly includes a rectangular frame surrounded by an upper end plate 101 provided with bolt holes 20, a lower end plate 102, a left end plate 201 and a right end plate 202, a front baffle 16, a rear baffle 17, and a pair of limit baffles 3 provided on the inner surfaces of the upper end plate 101 and the lower end plate 102. The front baffle 16 is arranged on the upper part of the inner side surface of the rectangular frame and is adjacent to the outdoor side 21; the tailgate 17 is provided at the lower part of the inner side surface of the rectangular frame adjacent to the indoor side 22. The valve frame assembly may be a welded, bolted or riveted structure. The limit baffle 3 is used for limiting the excessive rotation when the valve blade 5 is closed, and preventing the valve blade 5 from opening reversely when the shock wave is excessive. The limit baffle 3 may be a circular plate, a rectangular plate, etc.
The valve blade assembly comprises shafts 4 which are equidistantly distributed in a rectangular frame and two ends of the shafts penetrate through a left end plate 201 and a right end plate 202 respectively, valve blades 5 which are arranged between the left end plate 201 and the right end plate 202 and connected with the shafts 4, a first rotary positioning sheet 6 which is vertically arranged outside the left end plate 201 on one side of the rectangular frame and penetrated by the shafts 4, and a first connecting rod 7 which is connected with the first rotary positioning sheet 6 through a connecting rod bolt 14. The shaft 4, the first rotary locating piece 6 and the first connecting rod 7 connected with the first rotary locating piece 6 form a whole, so that synchronous rotation of all the shafts 4 is ensured. The valve blade assembly further comprises a second rotary positioning piece 8 vertically arranged on the outer side of the right end plate 202 on the other side of the rectangular frame and penetrated by the shaft 4, a positioning bolt 9 arranged on the second rotary positioning piece 8, a spring 11, a tension bolt 10 arranged above the second rotary positioning piece 8, and a positioning block 12 arranged above the second rotary positioning piece 8 and contacted with the upper side edge of the second rotary positioning piece 8 when the valve blade 5 is opened. The positioning bolt 9 is connected with the tension bolt 10 through a spring 11, the spring 11 pulls the second rotary positioning piece 8, and the second rotary positioning piece 8 can rotate along with the shaft 4. The valve blade 5 is rectangular and the cross-sectional shape of the shaft 4 may be square, circular or other polygonal shape. The shaft 4 is horizontally arranged and can be welded, bolted or riveted with the valve blade 5. The main purpose of the positioning block 12 is to limit the opening angle of the valve blade 5 (the opening angle of the valve blade 5 refers to the maximum opening angle of the valve blade 5), and the positioning block 12 may be cylindrical, rectangular parallelepiped, or the like.
The shaft 4 is provided with a locating pin 15 at both ends. The first rotary positioning piece 6 is in contact with the outer surface of the left end plate 201 on one side of the rectangular frame through the positioning pin 15, and the positioning pin 15 restricts the horizontal movement of the first rotary positioning piece 6 in the axial direction of the shaft 4. The second rotary positioning piece 8 is in contact with the outer surface of the right end plate 202 on the other side of the rectangular frame through the positioning pin 15, and the positioning pin 15 restricts the horizontal movement of the second rotary positioning piece 8 in the axial direction of the shaft 4.
Each shaft 4 divides the valve vane 5 connected thereto into a lower half and an upper half in the axial direction. When the valve flaps 5 are in the open state, between adjacent valve flaps 5, the lower part of the lower half of the upper valve flap 5 overlaps with the projection of the upper part of the upper half of the lower valve flap 5 on the vertical plane passing through the shaft 4 (the overlapping width is generally 50 to 170 mm), the upper part of the upper half of the uppermost valve flap 5 overlaps with the projection of the front baffle 16 on the vertical plane passing through the shaft 4 (the overlapping width is generally 25 to 170 mm), and the lower part of the lower half of the lowermost valve flap 5 overlaps with the projection of the rear baffle 17 on the vertical plane passing through the shaft 4 (the overlapping width is generally 25 to 170 mm). Due to the overlapping, when the antiknock valve is in a ventilation state, air with outdoor rainwater is enabled to flow through the upward inclined circulation channels between the valve blades 5 and impact the valve blades 5, so that the impact plays a role in gas-water separation, and the outdoor rainwater can be prevented from entering a room. The overlapping also enables the antiknock valve of the invention to have a bidirectional protection function and to be capable of blocking positive pressure and negative pressure shock waves.
Referring to fig. 7, the width f of the lower half of the valve blade 5 (the distance from the middle of the junction of the valve blade 5 with the shaft 4 to the bottom of the valve blade 5) is equal to the width e of the upper half of the valve blade 5 (the distance from the middle of the junction of the valve blade 5 with the shaft 4 to the top of the valve blade 5). The widths f and e should ensure that the top and bottom of the valve vane 5 connected to one shaft 4 do not touch the shaft 4 adjacent to that shaft 4. The total width (f+e) of one valve blade 5 is generally 200 to 400mm.
The valve blade 5 has an opening angle B of generally 30 ° to 60 ° in the open state. The opening angle B is the angle between the valve leaf 5 and the vertical plane passing through the shaft 4.
The height c of the front baffle 16 is typically 50 to 200mm and the height d of the rear baffle 17 is typically 50 to 200mm.
When the valve flaps 5 are in the closed state (the antiknock valve is in the antiknock state), a seal is formed between adjacent valve flaps 5, specifically between the lower half of the upper valve flap 5 and the upper half of the lower valve flap 5. In addition, the contact between the upper portion of the upper half of the uppermost valve vane 5 and the stopper 3 on the inner surface of the upper end plate 101 forms a seal, and the contact between the lower portion of the lower half of the lowermost valve vane 5 and the stopper 3 on the inner surface of the lower end plate 102 forms a seal. See fig. 9, 10, 11 and 12.
In the present invention, the valve frame assembly may be provided with guard plates 13 on the left end plate 201 and the right end plate 202 to protect the moving members of the valve blade assembly, such as the spring 11, the first link 7, the first rotary positioning piece 6, the second rotary positioning piece 8, etc., from the external environment.
According to the antiknock valve shown in fig. 1 to 12, the positioning block 12 is fixed (fixed on the outer surface of the right end plate 202) and the position is unchanged (the same as the positioning block described in CN 111927998A), so that the opening angle of the valve blade 5 cannot be adjusted on site, and the requirement of different air volumes on the opening angle of the valve blade 5 is met. To solve this problem, the positioning block 12 of the present invention may be non-stationary, as shown in fig. 13 and 14. The loose positioning block 12 is clamped at the sliding groove 19 by a tightening bolt and nut 12a, and the sliding groove 19 is arranged on the right end plate 202. The plurality of non-stationary positioning blocks 12 are preferably connected by a second link 18 to ensure that all of the positioning blocks 12 slide synchronously along each slide slot 19 after the tightening of the bolt and nut 12 a. Each positioning block 12 is fixedly connected with the second connecting rod 18. The second rotary positioning piece 8 is always positioned on the outer side of the second connecting rod 18 and is in contact with the second connecting rod or not. The non-fixed positioning block 12 is used, so that the opening angle of the valve blade 5 can be randomly adjusted on site within a certain range to meet the requirements of different air volumes on the opening angle of the valve blade 5, and meanwhile, the valve blade 5 does not generate vibration and noise in a normal ventilation state.
The use condition of the antiknock valve of the invention is as follows:
referring to fig. 5, 6 and 7, during normal ventilation, the valve blade 5 is in an initial open position under the interaction of the spring 11 and the positioning block 12 through the shaft 4 and the second rotary positioning piece 8, and air flow enters the indoor side 22 from the outdoor side 21 through the ventilation channel between the valve blades 5 with a certain opening angle B.
Referring to fig. 8, 9, 10, 11, when the opened valve leaf 5 is impacted by the positive pressure shock wave from the outdoor side 21, since the lower part of the lower half of the upper valve leaf 5 overlaps with the projection of the upper part of the upper half of the lower valve leaf 5 on the vertical plane passing through the shaft 4 between the adjacent valve leaves 5, the upper part of the upper half of the uppermost valve leaf 5 overlaps with the projection of the front baffle 16 on the vertical plane passing through the shaft 4, the upper part of the upper half of the lower valve leaf 5 is shielded by the lower part of the lower half of the upper valve leaf 5, and the upper part of the upper half of the uppermost valve leaf 5 is shielded by the front baffle 16, resulting in that the impact force received by the lower half of each valve leaf 5 is greater than the impact force received by the upper half. The moment generated by the difference of impact forces applied to the upper half part and the lower half part of all valve blades 5 to each shaft 4 overcomes the tension force of the spring 11, and the moment generated by the second rotary positioning sheet 8 to each shaft 4 causes all valve blades 5 to drive the shafts 4 to rotate together and drive the first rotary positioning sheet 6 and the first connecting rod 7 to move until all valve blades 5 are in a closed state, so that positive pressure shock waves are blocked from entering the indoor side 22.
Referring to fig. 8, 9, 10, 12, when the opened valve leaf 5 is impacted by the negative pressure shock wave from the indoor side 22, since the projection of the lower part of the upper valve leaf 5 and the upper part of the lower valve leaf 5 on the vertical plane passing through the shaft 4 overlap between the adjacent valve leaves 5, the projection of the lower part of the lowermost valve leaf 5 and the rear baffle 17 on the vertical plane passing through the shaft 4 overlap, the lower part of the upper valve leaf 5 is shielded by the upper part of the lower valve leaf 5, and the lower part of the lowermost valve leaf 5 is shielded by the rear baffle 17, so that the impact force received by the upper part of each valve leaf 5 is larger than that received by the lower part. The moment generated by the difference of impact forces applied to the upper half part and the lower half part of all valve blades 5 to each shaft 4 overcomes the tension force of the spring 11, and the moment generated by the second rotary positioning sheet 8 to each shaft 4 causes all valve blades 5 to drive the shafts 4 to rotate together and drive the first rotary positioning sheet 6 and the first connecting rod 7 to move until the valve blades 5 are in a closed state, so that negative pressure shock waves are blocked from entering the outdoor side 21.
Referring to fig. 5, 6 and 7, when the positive or negative pressure shock wave disappears, the spring 11 pulls the second rotary positioning piece 8 to rotate to a position where the upper side edge of the second rotary positioning piece 8 contacts with the positioning piece 12, and the second rotary positioning piece 8 drives the shaft 4 and the valve blade 5 to rotate. The valve blade 5 is rotated to the initial open position and the antiknock valve is normally vented.
In summary, when the antiknock valve of the present invention is impacted by the positive pressure and negative pressure shock waves, the valve leaf 5 is automatically closed and reset opened under the combined action of the impact force and the spring force of the upper half and the lower half of the valve leaf 5. When the valve flap 5 is opened, the bottom is close to the outdoor side 21 and the top is close to the indoor side 22.
The large air volume refers to the air volume not less than 16000 cubic meters per hour under the conditions of 1 standard atmospheric pressure (absolute pressure), 20 ℃ and 100Pa pressure drop per unit valve body flow cross section area.
In the description of the present invention, the terms "inner", "outer", "upper", "lower", "front", "rear", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, only for convenience in describing the present invention, and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
When the antiknock valve is used, the antiknock valve is arranged at an outdoor air inlet and outlet of a ventilation air-conditioning system of an antiknock building; the anti-explosion wall can be arranged on the outer side of the anti-explosion wall, the inner side of the anti-explosion wall and the middle of the anti-explosion wall, and engineering design can be flexibly adjusted according to different conditions. The valve frame component can be additionally provided with accessories such as a ventilation grille, a ventilation elbow and the like so as to prevent explosion fragments from damaging actuating mechanisms such as valve blades 5 and the like.
Claims (10)
1. The utility model provides a big amount of wind antiknock valve of two-way protection, including valve frame subassembly and valve leaf subassembly, valve frame subassembly includes the rectangle frame that is enclosed by upper end plate (101), lower end plate (102), left end plate (201) and right end plate (202), limit baffle (3) on upper end plate (101) and lower end plate (102) internal surface are set up, valve leaf subassembly includes axle (4), valve leaf (5) that link to each other with axle (4) and locate first rotary locating piece (6) in left end plate (201) outside, first connecting rod (7), valve leaf subassembly is still including locating second rotary locating piece (8) in right end plate (202) outside, spring (11) and locating piece (12), every axle (4) divide into lower half and upper half with its continuous valve leaf (5) along the axial, its characterized in that: the valve leaf assembly sets up a set of, limit baffle (3) set up a pair of, the upper portion of rectangle frame medial surface, be equipped with preceding baffle (16) adjacent with outdoor side (21), the lower part of rectangle frame medial surface, be equipped with backplate (17) adjacent with indoor side (22), valve leaf (5) are when opening the state, between adjacent valve leaf (5), the projection of upper portion on the vertical plane through axle (4) of upper valve leaf (5) lower part and lower valve leaf (5) upper portion overlap, the projection of upper portion on the vertical plane through axle (4) of upper half of valve leaf (5) of the top overlaps with preceding baffle (16), the projection of lower portion on the vertical plane through axle (4) of valve leaf (5) lower part and backplate (17) of the bottom overlaps.
2. An antiknock valve according to claim 1 in which: the width f of the lower half of the valve blade (5) is equal to the width e of the upper half of the valve blade (5), and the total width (f+e) of the valve blade (5) is 200-400 mm.
3. The antiknock valve according to claim 1 or 2, characterized in that: when the valve blade (5) is in an open state, the opening angle B is 30-60 degrees.
4. The antiknock valve according to claim 1 or 2, characterized in that: the height c of the front baffle (16) is 50-200 mm, and the height d of the rear baffle (17) is 50-200 mm.
5. The antiknock valve according to claim 1 or 2, characterized in that: when the valve blades (5) are in a closed state, sealing is formed between the adjacent valve blades (5), the upper part of the upper half part of the uppermost valve blade (5) is contacted with the limit baffle (3) on the inner surface of the upper end plate (101) to form sealing, and the lower part of the lower half part of the lowermost valve blade (5) is contacted with the limit baffle (3) on the inner surface of the lower end plate (102) to form sealing.
6. An antiknock valve according to any one of claims 1 to 5 characterised in that: the positioning block (12) can be fixed or non-fixed.
7. The antiknock valve of claim 6 wherein: the positioning block (12) is non-fixed and is clamped at the sliding groove (19) by an elastic bolt and nut (12 a), and the sliding groove (19) is arranged on the right end plate (202).
8. The antiknock valve of claim 7 wherein: a plurality of non-stationary positioning blocks (12) are connected by a second link (18).
9. An antiknock valve according to claim 1 in which: when the valve flaps 5 are in an open state, the lower half of each valve flap 5 receives a greater impact force than the upper half when being impacted by a positive pressure shock wave from the outdoor side 21.
10. An antiknock valve according to claim 1 in which: when the valve flaps (5) are in an open state, when being impacted by negative pressure shock waves from the indoor side (22), the impact force exerted on the upper half part of each valve flap (5) is larger than that exerted on the lower half part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210021212.2A CN116447368A (en) | 2022-01-10 | 2022-01-10 | Two-way protection big amount of wind antiknock valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210021212.2A CN116447368A (en) | 2022-01-10 | 2022-01-10 | Two-way protection big amount of wind antiknock valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116447368A true CN116447368A (en) | 2023-07-18 |
Family
ID=87124360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210021212.2A Pending CN116447368A (en) | 2022-01-10 | 2022-01-10 | Two-way protection big amount of wind antiknock valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116447368A (en) |
-
2022
- 2022-01-10 CN CN202210021212.2A patent/CN116447368A/en active Pending
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