CN220354613U - Rocker arm structure of ventilation non-return air valve - Google Patents
Rocker arm structure of ventilation non-return air valve Download PDFInfo
- Publication number
- CN220354613U CN220354613U CN202321550955.5U CN202321550955U CN220354613U CN 220354613 U CN220354613 U CN 220354613U CN 202321550955 U CN202321550955 U CN 202321550955U CN 220354613 U CN220354613 U CN 220354613U
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- rocker arm
- valve
- tooth
- valve body
- ventilation
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- 238000009423 ventilation Methods 0.000 title claims abstract description 64
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model discloses a rocker arm structure of a ventilation non-return air valve, wherein a rocker arm rod of the rocker arm structure of the ventilation non-return air valve is provided with a second assembly end, the second assembly end is a tooth-shaped through hole, a plurality of tooth grooves are uniformly formed in the tooth-shaped through hole at equal intervals, and the sizes of the tooth grooves are the same; and a plurality of teeth are uniformly arranged on the periphery of the rocker arm internal gear at equal intervals, the sizes of the teeth are the same, the number of the teeth is matched and corresponds to the number of tooth grooves on the tooth-shaped through holes, and a positioning hole for assembling the rocker arm internal gear on a valve shaft of the ventilation non-return air valve body is formed in the center of the rocker arm internal gear. According to the rocker arm structure of the ventilation non-return air valve, the rocker arm rod can be adjusted at a plurality of angles relative to the valve body of the ventilation non-return air valve; the structure is simple, and the maintenance and the repair are facilitated.
Description
Technical Field
The utility model relates to the technical field of ventilation non-return air valves, in particular to a rocker arm structure of a ventilation non-return air valve.
Background
In the overhauling process of the ventilation system in the prior art, the problem that the included angle between the heavy hammer rocker arm of the ventilation non-return air valve and the valve body cannot meet the field operation requirement exists.
As shown in fig. 1, the assembly structure of the existing ventilation non-return air valve is as follows: the valve body 91 of the ventilation non-return air valve is provided with a valve shaft 92, one end of a rocker arm 93 of the ventilation non-return air valve is assembled on the valve shaft 92, and the other end of the rocker arm 93 is assembled with a valve weight 94. The valve weight 94 functions as: the gravity of the valve weight 94 helps to close the ventilation non-return damper valve and ensures that the valve is in the closed position, and at the same time, it can open the valve when there is a certain pressure differential across the valve body.
The angle α between the rocker arm 93 and the valve body 91 of the ventilation non-return air valve with the above structure is relatively fixed, which has a number of inconveniences, and the main problems are as follows: 1. the lack of the field space causes that the heavy hammer rocker arm and the valve body cannot be installed; 2. the ventilation pipeline of the ventilation non-return air valve and the environment in which the air valve is installed have positive and negative pressure disturbance, and the included angle alpha cannot be adjusted so that the problems of untight closing of the air valve, abnormal air quantity, reverse rotation of a fan and the like easily occur. 3. When the rocker arm of the ventilation non-return air valve is overhauled, the rocker arm is inconvenient to assemble and disassemble.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide a rocker arm structure of a ventilation non-return air valve, wherein a rocker arm rod can be adjusted at a plurality of angles relative to a valve body of the ventilation non-return air valve; the structure is simple, and the maintenance and the repair are facilitated.
In order to solve the above technical problems, an embodiment of the present utility model provides a rocker arm structure of a ventilation non-return air valve, which is used for being respectively connected with a valve body and a valve weight of the ventilation non-return air valve, so as to satisfy the mechanical properties of the ventilation non-return air valve, including: a first assembling end for assembling and connecting the valve weight is arranged at one end of the rocker arm, a second assembling end for assembling the rocker arm on the valve body of the ventilation non-return air valve is arranged at the opposite end of the rocker arm, the second assembly end is a tooth-shaped through hole, a plurality of tooth grooves are uniformly formed in the tooth-shaped through hole at equal intervals, and the sizes of the tooth grooves are the same; the equal distance of periphery of rocking arm internal gear evenly is equipped with a plurality of teeth, and the size of a plurality of teeth is set to the same, sets up the number of a plurality of teeth and the number adaptation correspondence of tooth's socket on a plurality of profile of tooth through-holes, and the locating hole on the valve shaft that is used for assembling rocking arm internal gear at the contrary air valve body of ventilation is seted up at rocking arm internal gear's center, wherein: the rocker arm rod is rotated by a certain angle, and tooth grooves of tooth-shaped through holes on the rocker arm rod are adaptively clamped on teeth on the periphery of an inner gear of the rocker arm, so that the assembly angle of the rocker arm rod relative to the valve body is adjusted.
Wherein the rocker arm tapers from the second mounting end to the first mounting end.
Wherein, the locating hole includes: the centers of the first square shaft hole site and the second square shaft hole site are respectively overlapped with the center of the rocker inner gear.
Wherein, the angle of relative dislocation of first square axle hole site and second square axle hole site is 45.
The valve shaft of the ventilation non-return air valve body is assembled on the first square shaft hole site or the second square shaft hole site, so that the assembly angle of the rocker inner gear relative to the valve shaft of the ventilation non-return air valve body is adjusted.
Wherein, the angle between adjacent tooth sockets on the tooth-shaped through holes is set to be 30 degrees.
The first assembly end is provided with a plurality of assembly holes at the end part of the rocker arm, the assembly holes are uniformly arranged at equal intervals, and the assembly holes are round through holes.
Wherein, install the valve weight on the pilot hole in different positions, make the arm of force of changing valve weight to the valve body size.
The rocker arm rod and the rocker arm internal gear are respectively formed by linear cutting.
The assembly angle between the rocker arm rod and the rocker arm internal gear is changed, and/or the assembly angle between the rocker arm internal gear and the valve shaft of the valve body of the ventilation non-return air valve is changed, so that the rocker arm rod is adjusted at a plurality of angles relative to the valve body of the ventilation non-return air valve.
The rocker arm structure of the ventilation non-return air valve provided by the utility model has the following beneficial effects: the rocker arm rod of the ventilation non-return air valve rocker arm structure is provided with a second assembly end, the second assembly end is a tooth-shaped through hole, a plurality of tooth grooves are uniformly formed in the tooth-shaped through hole at equal intervals, and the sizes of the tooth grooves are the same; and a plurality of teeth are uniformly arranged on the periphery of the rocker arm internal gear at equal intervals, the sizes of the teeth are identical, the number of the teeth is matched with the number of tooth grooves on the tooth-shaped through holes, and a positioning hole for assembling the rocker arm internal gear on a valve shaft of the ventilation non-return air valve body is formed in the center of the rocker arm internal gear, wherein: rotating the rocker arm lever by a certain angle, wherein tooth grooves of tooth-shaped through holes on the rocker arm lever are adaptively clamped on teeth on the periphery of an inner gear of the rocker arm, so that the assembly angle of the rocker arm lever relative to a valve body is adjusted, and the rocker arm lever can be adjusted at a plurality of angles relative to the valve body of the ventilation non-return air valve; the structure is simplified, machining of the rocker arm rod is further reduced, material waste is reduced, and maintenance period is saved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a rocker arm assembly structure of a conventional ventilation non-return valve.
Fig. 2 is a schematic view of a part of a rocker arm structure of a ventilation non-return air valve of the present embodiment.
Fig. 3 is a schematic view of the structure of the rocker inner gear of the ventilation non-return air valve rocker structure of this embodiment.
FIG. 4 is a schematic view showing the assembly of a rocker arm lever and an inner gear of a rocker arm of a ventilation non-return air valve rocker arm structure of the present embodiment
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Fig. 2-4 show a first embodiment of the ventilation non-return air valve rocker arm structure of the present utility model.
The ventilation contrary blast gate rocking arm structure in this embodiment for be connected with the valve body and the valve weight of ventilation contrary blast gate respectively, make and satisfy the mechanical properties of ventilation contrary blast gate, it includes: rocker arm lever 1 and rocker inner gear 2.
A first assembling end 11 for assembling and connecting a valve weight is arranged at one end of the rocker arm lever 1, a second assembling end 12 for assembling the rocker arm lever 1 on a valve body of the ventilation non-return air valve is arranged at the other opposite end of the rocker arm lever 1, the second assembling end 12 is a tooth-shaped through hole, a plurality of tooth grooves 121 are uniformly formed in the tooth-shaped through hole at equal intervals, and the sizes of the tooth grooves 121 are the same; and
the equal distance of the periphery of rocking arm internal gear 2 evenly is equipped with a plurality of teeth 21, and the size of a plurality of teeth 21 is set to the same, sets up the number adaptation of a plurality of teeth 21 and the tooth's socket 121 on a plurality of profile of tooth through-holes 12, and the locating hole 22 that is used for assembling rocking arm internal gear 21 on the valve shaft of ventilation contrary air valve body is seted up at rocking arm internal gear 2's center, wherein: the rocker arm 1 is rotated by a certain angle, and tooth grooves 121 of tooth-shaped through holes on the rocker arm are adapted to be clamped on teeth 21 on the periphery of the rocker arm internal gear 2, so that the assembly angle of the rocker arm 1 relative to the valve body is adjusted.
In particular, the rocker arm 1 has a rod-like structure with a certain thickness, which is shaped by wire cutting. The rocker arm 1 tapers from the second mounting end 12 to the first mounting end 11.
The first assembly end 11 is provided with a plurality of assembly holes at the end part of the rocker arm, the assembly holes are uniformly arranged at equal intervals, and the assembly holes are round through holes with the same size and dimension. Since the circular through hole is far from the second mounting end 12, the performance of the ventilation non-return valve can be affected differently when the weight plate is mounted at different positions.
It can be understood that the magnitude of the arm of force of the valve weight to the valve body can be changed by adjusting the number of the valve weights and installing the valve weights on the assembly holes at different positions.
In addition, the change of the force arm of the heavy hammer on the valve body can be realized by adjusting the number of the heavy hammer, and the influence of the heavy hammer on the performance of the air valve is changed. The mechanical property of the heavy hammer sheet is matched with the adjustment of the rocker arm rod relative to the valve body in a plurality of angles, so that the ventilation non-return air valve meets the requirement of field operation.
Further, the second fitting end 12 functions as: on the one hand, the rocker arm 1 can be mounted on the valve body of the ventilation non-return air valve, and on the other hand, the rocker arm can be adjusted in terms of the mounting angle relative to the valve rod. The second assembly end 12 is a tooth-shaped through hole, and a plurality of tooth grooves 121 formed in the tooth-shaped through hole are uniformly formed in an equidistant manner, and the sizes of the tooth grooves 121 are the same.
Preferably, the angle between adjacent tooth slots 121 on the tooth-shaped through holes is set to 30 degrees, so that 12 mounting angles are formed on the rocker arm lever 1 in the circumferential direction.
Further, the rocker inner gear 2 functions as: the rocker arm lever 1 is fitted and connected to the valve shaft of the valve body of the ventilation non-return air valve. The outer periphery of the rocker inner gear 2 is provided with a plurality of teeth 21, the plurality of teeth 21 are equally spaced and uniformly arranged, the plurality of teeth 21 are identical in size, in this embodiment, the rocker inner gear is wire-cut formed, and 12 teeth 21 are provided on the outer periphery of the rocker inner gear 2.
Further, the number of the plurality of teeth 21 is matched with the number of the tooth grooves 121 on the plurality of tooth-shaped through holes 12, so that the rocker arm lever 1 and the rocker arm internal gear 2 are assembled.
Further, a positioning hole 22 for assembling the rocker inner gear 21 on the valve shaft of the ventilation non-return air valve body is formed in the center of the rocker inner gear 2. In the present embodiment, the positioning hole 22 includes: the first and second square shaft positions 228, 229, respectively, have centers that coincide with the centers of the rocker arm inner gear 22. Wherein the first square-axis hole site 228 and the second square-axis hole site 229 are offset at an angle of 45 ° relative to each other. In this way, when the valve shaft of the reverse ventilation air valve body is assembled to the first square shaft hole site 228 or the second square shaft hole site 229, the assembly angle of the rocker inner gear 2 with respect to the valve shaft of the reverse ventilation air valve body can be adjusted.
During implementation, the rocker arm rod 1 has 12 installation angles with the rocker arm internal gear 2 in the circumferential direction, and the rocker arm internal gear 2 has 2 installation angles relative to the valve shaft of the valve body of the ventilation non-return air valve, so that the problem that the included angle between the rocker arm rod and the valve body cannot be adjusted is solved, and the rocker arm rod 1 can be adjusted in 24 angular positions relative to the valve body of the ventilation non-return air valve.
In the rocker arm structure of the ventilation non-return air valve in the embodiment, when the rocker arm structure is in practical implementation, the rocker inner gear 21 is assembled on the valve shaft of the valve body of the ventilation non-return air valve, the rocker inner gear 2 has 2 mounting angles relative to the valve shaft, and one of the mounting angles can be selected according to practical use requirements. The rocker arm 1 is rotated by a certain angle, so that tooth grooves 121 of tooth-shaped through holes on the rocker arm are adapted to be clamped on teeth 21 on the periphery of the rocker arm internal gear 2, and the rocker arm 1 has 12 installation angles with the rocker arm internal gear 2 in the circumferential direction. In this way, the rocker arm lever is adjusted in a plurality of angles relative to the valve body by changing the assembly angle between the rocker arm lever and the rocker inner gear, and/or by changing the assembly angle between the rocker inner gear and the valve shaft of the ventilation non-return air valve body.
The rocker arm structure of the ventilation non-return air valve has the following beneficial effects:
first, because the rocker arm lever can be adjusted on a plurality of angles relative to the valve body, the problem that the air valve cannot be installed due to interference between the heavy hammer or the rocker arm and the field environment can be solved.
Secondly, under the conditions that pressure disturbance exists in a ventilating pipeline and a fan valve installation room and differences exist in design working conditions, the problems of abnormal air quantity and fan reversal caused by the fact that the fan valve is not tightly closed are solved by changing the angle of a rocker arm and the position of a heavy hammer acting on a valve body.
Thirdly, the machining amount can be further reduced, and the overhauling period of the air valve is shortened. The structure is simple, and the maintenance and the repair are facilitated.
Claims (10)
1. The utility model provides a ventilation contrary blast gate rocking arm structure for be connected with the valve body and the valve weight of ventilation contrary blast gate respectively, make the mechanical properties who satisfies ventilation contrary blast gate, its characterized in that includes:
a first assembling end for assembling and connecting a valve weight is arranged at one end of the rocker arm, a second assembling end for assembling the rocker arm on a valve body of the ventilation non-return air valve is arranged at the opposite end of the rocker arm, the second assembly end is a tooth-shaped through hole, a plurality of tooth grooves are uniformly formed in the tooth-shaped through hole at equal intervals, and the sizes of the tooth grooves are the same;
the rocking arm internal gear, the periphery equidistance of rocking arm internal gear evenly is equipped with a plurality of teeth, and the size of a plurality of teeth is established to the same, sets up the number adaptation correspondence of tooth's socket on a plurality of profile of tooth through-holes, the locating hole that is used for with rocking arm internal gear assembly on the valve shaft of ventilation contrary air valve body has been seted up at the center of rocking arm internal gear, wherein:
and rotating the rocker arm rod by a certain angle, and clamping tooth grooves of the tooth-shaped through holes on the rocker arm rod on teeth on the periphery of an inner gear of the rocker arm in an adapting way, so that the assembly angle of the rocker arm rod relative to the valve body is adjusted.
2. The ventilated, inverted wind valve rocker arm structure of claim 1, wherein said rocker arm stem tapers from said second mounting end to said first mounting end.
3. The ventilation non-return air valve rocker arm structure of claim 1, wherein the locating hole comprises: the center of the first square shaft hole site and the center of the second square shaft hole site are respectively overlapped with the center of the rocker inner gear.
4. A ventilation non-return air valve rocker arm structure in accordance with claim 3 wherein said first square shaft aperture and said second square shaft aperture are offset at an angle of 45 ° relative to each other.
5. The structure of claim 3 or 4, wherein the valve shaft of the valve body of the valve is fitted to the first square shaft hole or the second square shaft hole, so that the fitting angle of the rocker inner gear with respect to the valve shaft of the valve body of the valve is adjusted.
6. The structure of claim 1, wherein the angle between adjacent tooth spaces on said tooth-shaped through hole is set to 30 °.
7. The structure of claim 1, wherein the first assembly end is a plurality of assembly holes formed in the end of the rocker arm lever, the plurality of assembly holes are uniformly arranged at equal intervals, and the assembly holes are circular through holes.
8. The structure of claim 7, wherein the valve weights are mounted on the mounting holes at different positions to change the magnitude of the arm of force of the valve weights against the valve body.
9. The structure of claim 1, wherein the rocker arm lever and the rocker inner gear are each wire cut.
10. The structure of claim 1, wherein changing the assembly angle between the rocker arm lever and the rocker ring gear and/or changing the assembly angle between the rocker ring gear and the valve shaft of the valve body of the valve adjusts the rocker arm lever at a plurality of angles relative to the valve body of the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321550955.5U CN220354613U (en) | 2023-06-15 | 2023-06-15 | Rocker arm structure of ventilation non-return air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321550955.5U CN220354613U (en) | 2023-06-15 | 2023-06-15 | Rocker arm structure of ventilation non-return air valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220354613U true CN220354613U (en) | 2024-01-16 |
Family
ID=89475976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321550955.5U Active CN220354613U (en) | 2023-06-15 | 2023-06-15 | Rocker arm structure of ventilation non-return air valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220354613U (en) |
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2023
- 2023-06-15 CN CN202321550955.5U patent/CN220354613U/en active Active
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