CN221196096U - Variable air valve structure - Google Patents

Abstract

The utility model discloses a variable air valve structure, which comprises a box body, wherein two ends of the box body are provided with openings and flanges respectively; the gear set comprises a driving gear and a driven gear which are mutually meshed and positioned in the box body, the driving gear is connected with an output shaft which is subjected to speed reduction by a motor through a driving shaft, the driven gear is connected with a driven shaft which is movably installed on the box body, the driving gear and the driven gear are identical in structure, a limiting bulge and a small wind shielding block are arranged on a fluted disc, the two limiting bulges form a limiting groove, and the extending part of the end part of each limiting bulge forms the small wind shielding block; the blade group, the blade group include two overlap joint driving blade and driven blade, driving blade and driven blade's structure are the same and are hollow structure, driven blade's both ends activity cartridge respectively in the spacing recess on two driven gear that set up relatively. Compared with the traditional air valve with a connecting rod structure, the device has more accurate function of controlling the air quantity and better sealing performance.

Description

Variable air valve structure

Technical Field

The utility model relates to the technical field of improved design of air valve structures, in particular to a variable air valve structure.

Background

The air valve is often applied to places such as underground stations, tunnels and the like to play a role in fire prevention and wind prevention. The air valve is generally on-off, is usually arranged on a pipeline of an air duct or a ventilation air conditioning system, and can maintain normal ventilation in an application place when the air valve is in an opened state. When an accident such as a fire occurs in the application place, the damper can be closed to control the spread of the accident such as the fire. The air valve is usually used in an environment with higher temperature and larger pressure difference. In order to meet the operational environment of the damper, the blades in the damper need to have sufficient strength and rigidity, and when the damper is in a closed state, the adjacent two damper blades need to be tightly and reliably connected in a sealed manner.

The traditional air valve is usually driven by a connecting rod mechanism, and the movement of the connecting rod mechanism is driven by an intermediate member, so that the transmission route is longer, larger error accumulation is easy to generate, the accuracy of the control blade is lower, and the mechanical efficiency is reduced. In assembly, the device is formed by welding and other processes after the parts such as the blades, the connecting rods and the like are assembled into the semi-finished product box body, and the mass production of the device is not good.

In the prior art, patent publication No. CN213206581U discloses a damper blade and a damper with the damper blade. The air valve blade comprises a blade body and two sealing assemblies. Each sealing assembly comprises a spring plate sealing element and an elastomer sealing element, and the elastomer sealing element is arranged on the inner side of the spring plate sealing element. The elastic piece sealing piece comprises a mounting part and a sealing part. The mounting portion is connected to the blade body, the sealing portion includes a receiving portion and an abutting portion, and an inner side of the sealing portion forms a sealing area. The damper of the present application comprises at least two of the aforementioned damper blades, the at least two damper blades being capable of rotational movement about respective axes to bring the damper into an open or closed condition. When the damper is in a closed state, the abutment portion of one of the adjacent two damper blades abuts the elastomeric seal of the other damper blade and presses the elastomeric seal against the abutment portion of the other damper blade. The sealing assembly greatly improves the sealing capability of the air valve.

Among the above-mentioned technical scheme, focus on adopting elastomer sealing member to improve the sealing capability of blast gate, transmission structure is link mechanism, to the condition in this in order to change the intake of blast gate with the different blade angles of needs adjustment, can not fine satisfy the user demand.

The application aims to solve one of the problems and provides a variable air volume valve structure.

Disclosure of utility model

The utility model aims to solve the problems in the prior art, and provides a variable air volume valve structure which has more accurate function of controlling air volume and better sealing property compared with a traditional connecting rod structure air valve.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the variable air valve structure comprises a box body, wherein two ends of the box body are provided with openings and flanges respectively;

the gear set comprises a driving gear and a driven gear which are mutually meshed in the box body, the driving gear is connected with an output shaft which is subjected to speed reduction by a motor through a driving shaft, the driven gear is connected with a driven shaft which is movably arranged on the box body, the driving gear and the driven gear are identical in structure, a limiting bulge and a small wind shielding block are arranged on a fluted disc, the two limiting bulges form a limiting groove, and the end part extending parts of the limiting bulges form the small wind shielding block;

The blade group, the blade group include two overlap joint driving blade and driven blade, driving blade and driven blade's structure are the same and are hollow structure, driven blade's both ends activity cartridge respectively in the spacing recess on two driven gear that set up relatively.

Further, a plurality of mounting holes matched with the driving shaft and the driven shaft are formed in the box body.

Further, the flange is welded at the opening of the case.

Further, the gear set comprises a first driving gear, a second driving gear, a first driven gear and a second driven gear, wherein the first driving gear and the second driving gear are oppositely arranged, driving blades are inserted between the first driving gear and the second driving gear, and driven blades are inserted between the first driven gear and the second driven gear.

Further, the driving shaft is a first plug, two ends of the first plug are fixedly connected with the first driving gear and the output shaft respectively, the driven shaft is a second plug, and the three second plugs are connected with the second driving gear, the first driven gear and the second driven gear respectively.

Further, the first plug and the second plug are movably installed in the installation hole machined in the box body.

Furthermore, the first plug and the second plug are respectively provided with a limit column and a through hole, and tapping screws are inserted into the through holes to connect the first driving gear, the second driving gear, the first driven gear and the second driven gear.

Furthermore, a rib plate and a limiting hole are also arranged in the hollow structure of the blade, and the limiting column penetrates through fluted discs of the driving gear and the driven gear and is matched with the limiting hole.

Further, the limiting hole is a C-shaped hole, and the limiting groove is positioned at the center line of the fluted disc of the driving gear and the fluted disc of the driven gear.

Further, as described above, washers are provided between the first driving gear, the second driving gear, the first driven gear, and the second driven gear, respectively, and the case, and the windshield block is also located on a single tooth of the fluted disc of the driving gear and the driven gear.

Compared with the prior art, the utility model has the beneficial effects that: compared with the traditional air valve with a connecting rod structure, the device is more accurate in function of controlling air quantity, better in sealing performance, capable of accurately controlling the opening and closing angles of the blades through the motor, ingenious in overall structural design, particularly in telescopic design of the blades on the gear disc, convenient for installation and maintenance of the gear set and the blade set in the box body, capable of assisting in designing small wind shielding blocks and further improving overall sealing effect.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic illustration of FIG. 1 with a single-sided vane gear omitted;

fig. 3 is a schematic view of fig. 1 with the housing omitted.

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a schematic view of a vane pack according to the present utility model;

FIG. 6 is a perspective view of a first driven gear of the present utility model;

fig. 7 is an enlarged schematic view at a in fig. 6.

In the figure: 1. a case; 11. a mounting hole; 12. a flange; 2. an output shaft; 3. a blade group; 31. a driving blade; 32. a driven blade; 33. a limiting hole; 34. rib plates; 4. a gear set; 41. a first drive gear; 42. a second drive gear; 43. a second driven gear; 44. a first driven gear; 441. a limit protrusion; 442. a small wind shielding block; 5. a second plug; 6. and a gasket.

Detailed Description

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "fixed," "mounted," "connected," "disposed," and the like are to be construed broadly, e.g., when an element is referred to as being "fixed" to 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 "mounted" 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 fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

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.

Referring to fig. 1-7, in a first embodiment, the variable air valve structure of the present utility model includes a case 1, wherein flanges 12 are respectively disposed at two ends of the case 1, specifically, in order to ensure the accuracy of a pipe, four sides of the case 1 are bent and welded to form, and then the flanges 12 are welded at two ends of the case 1; the gear set 4 comprises a driving gear and a driven gear which are mutually meshed in the box body 1, the driving gear is connected with the output shaft 2 which is subjected to motor speed reduction through a driving shaft, the driven gear is connected with a driven shaft which is movably arranged on the box body 1, the driving gear and the driven gear are identical in structure, a limiting protrusion 441 and a wind shielding small block 442 are arranged on a fluted disc, the two limiting protrusions 441 form a limiting groove, and the end extension part of each limiting protrusion 441 forms the wind shielding small block 442; the blade group 3, the blade group 3 include two overlap joint driving blade 31 and driven blade 32, driving blade 31 and driven blade 32's structure is the same and all is hollow structure, driven blade 32's both ends activity cartridge respectively in the spacing recess on two driven gear that set up relatively.

In the second embodiment, based on the technical scheme of the first embodiment, in the air valve structure, further, for the structure of the box body 1, a plurality of mounting holes 11 matched with a driving shaft and a driven shaft are processed on the box body 1, the flange 12 is welded at an opening of the box body 1 and is used for being connected with other box bodies 1 to form a pipeline, and the size of the inner wall of the box body 1 is 300 x 199.6 x 350mm.

For the structure of the gear set 4, the gear set 4 includes a first driving gear 41, a second driving gear 42, a first driven gear 44 and a second driven gear 43, the first driving gear 41 and the second driving gear 42 are oppositely arranged, the driving blade 31 is inserted between the first driving gear 41 and the second driving gear 42, the first driven gear 44 and the second driven gear 43 are oppositely arranged, the driven blade 32 is inserted between the first driven gear 44 and the second driven gear 43, as shown in fig. 4 and 5, the profile design of the blade set 3 conforms to the limit groove on the fluted disc for assembly, and meanwhile, the streamline design can reduce the air resistance of the blade set 3. The four gears of the gear set 4 have the same structural design, and the gears with the modulus of 2.25, the tooth number of 43 and the thickness of 9 are selected.

In order to achieve symmetry of the split rotation of the blade group 3, the two sides are respectively rotated by two gears to drive the moving blades, so that the blades can be ensured to rotate symmetrically and synchronously. For driving the gear to rotate, a transmission mechanism which is mainly driven by a driving shaft and driven by three driven shafts in an auxiliary way is designed, the driving shaft can be driven by a motor and a matched speed reducer to rotate, the motor is a common power device and can be purchased according to requirements, the description is omitted, and the three driven shafts have the function of assisting in rotation and also have the function of fixing the blade group 3 to the box body 1.

In the third embodiment, based on the technical solution of the first embodiment, in the variable air valve structure, for the design of the transmission structure, the driving shaft is a first plug, two ends of the first plug are respectively and fixedly connected with the first driving gear 41 and the output shaft 2, the driven shaft is a second plug 5, and the three second plugs 5 are respectively connected with the second driving gear 42, the first driven gear 44 and the second driven gear 43. The first plug and the second plug 5 are movably arranged in a mounting hole 11 processed on the box body 1, and specifically, the first plug and the second plug 5 can axially move and circumferentially rotate in the mounting hole 11.

Further, the first plug and the second plug 5 are respectively provided with a limit post and a through hole, and tapping screws are inserted into the through holes to connect the first driving gear 41, the second driving gear 42, the first driven gear 44 and the second driven gear 43. The hollow structure of blade in still be equipped with gusset 34 and spacing hole 33, design twice gusset 34 in the blade center and play the supporting role, strengthen the anti deformability of blade, designed the protrusion of similar gear tooth formula at both ends for overlap joint between driving vane 31 and the driven vane 32, when blade group 3 is closing, driving vane 31 and driven vane 32 overlap joint each other, reinforcing device's leakproofness, spacing post runs through the fluted disc of driving gear and driven gear and cooperates with spacing hole 33. The limiting hole 33 is a C-shaped hole, and the limiting groove is positioned at the center line of the fluted disc of the driving gear and the driven gear. The first driving gear 41, the second driving gear 42, the first driven gear 44 and the second driven gear 43 are respectively provided with a gasket 6 with the box body 1, and the small wind shielding block 442 is also positioned on a single tooth of the fluted disc of the driving gear and the driven gear.

After the single-group gear blade mechanism is completed, the other group gear blade mechanism is assembled, but after the other group gear blade mechanism is assembled, the gear set 4 needs to be meshed at the correct position, the opening and closing degree of the blade set 3 needs to be uniform, and after the problems are considered, a set of fluted disc marking rules are designed. As shown in fig. 6, marks are respectively arranged on two sides of the fluted disc, the empty mark is called 0, the other mark is called 1, meanwhile, each mark is provided with a scale pointing to the meshing position, and if gears are to be meshed, the marks 0 and 1 are matched. As shown in FIG. 5, the tip of a blade is offset to the right and vice versa. The following table lists all cases where gear set 4 and vane set 3 cooperate in combination:

Gear arrangement	Driving vane	Driven blade	Feasibility of
				0101	Left leaf of leaf	Left leaf of leaf	Feasible
0101	Left leaf of leaf	Leaf right	Not feasible
				0101	Leaf right	Leaf right	Feasible
0101	Leaf right	Left leaf of leaf	Not feasible
				1010	Left leaf of leaf	Left leaf of leaf	Feasible
1010	Left leaf of leaf	Leaf right	Not feasible
				1010	Leaf right	Leaf right	Feasible
1010	Leaf right	Left leaf of leaf	Not feasible

From the above table, it can be seen that the combination of the gear set 4 and the blade set 3 is successful, and that the gear set 4 is arranged 0101 or 1010 and the blade set 3 is biased identically.

The improvement points of the device are as follows: aiming at the problem of complicated assembly flow of the traditional variable air volume valve, a solution is provided that after the gear set 4 and the blade set 3 are assembled into the box body 1, the gear set is supported and rotated through a driving shaft and a driven shaft, and the gear set and the blade set are assembled by means of self-tapping screws. Because the flange 12 is arranged in the box body 1 to form an integral structure, the gear blades cannot be directly and radially arranged in the box body 1, and the assembly requirement is met by designing an elastic telescopic structure of the gear and the blades. Specifically, in order to ensure the pipeline precision, four sides of the box body 1 are firstly molded, the flange 12 is welded at the rear side on the opening end of the box body 1, the welding part of the flange 12 on the inner wall of the box body 1 is thick and is equivalent to a small step or bulge, when the gear set 4 and the blade set 3 are installed, the gear and the blade can be put in after being assembled, but the step of the welding part is needed to be used for avoiding the clearance, the clearance is designed in such a way that the limiting groove of the blade on the fluted disc is firstly inserted to the bottom, the blade is ejected when the fluted disc is locked by self-tapping screws after passing through the step of the flange 12, and in order to avoid the gap of the ejected blade, a small wind shielding block 442 is arranged on the fluted disc at the blade inserting position, so that the air passing can be further reduced when the air valve is closed.

The assembly and matching relation of the components, the materials used and the like in the device are the prior art or the materials, and the skilled person can directly purchase or order from the market according to the required product model and specification.

The electrical components are all electrically connected with an external main controller and 220V commercial power or industrial power, and the main controller can be conventional known equipment with a control function of a computer and the like.

In the foregoing description, only the preferred embodiment of the present utility model is described, but the common general knowledge of the specific structure and characteristics of the present utility model is not described in any detail. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the present embodiments are to be considered in all respects as illustrative and not restrictive, and any equivalents and modifications thereof according to the technical scheme and the inventive concept thereof, which are within the scope of the present disclosure, are intended to be included in the scope of the present disclosure.

Claims (10)

1. The variable air valve structure is characterized by comprising a box body (1), wherein two ends of the box body (1) are provided with openings and flanges (12) respectively;

The gear set (4) comprises a driving gear and a driven gear which are mutually meshed in the box body (1), the driving gear is connected with an output shaft (2) which is subjected to speed reduction through a driving shaft, the driven gear is connected with a driven shaft which is movably arranged on the box body (1), the driving gear and the driven gear are identical in structure, a limiting protrusion (441) and a small wind shielding block (442) are arranged on a fluted disc, the two limiting protrusions (441) form a limiting groove, and the end extending part of each limiting protrusion (441) forms the small wind shielding block (442);

The blade group (3), blade group (3) include two overlap joint driving blade (31) and driven blade (32), driving blade (31) and driven blade (32) the same and hollow structure of structure, the both ends of driven blade (32) are movable cartridge respectively in the spacing recess on two driven gear of relative setting.

2. The variable air valve structure according to claim 1, wherein the box body (1) is provided with a plurality of mounting holes (11) matched with the driving shaft and the driven shaft.

3. A variable air valve structure according to claim 2, characterized in that the flange (12) is welded at the opening of the tank (1).

4. The variable air valve structure according to claim 1, wherein the gear set (4) comprises a first driving gear (41), a second driving gear (42), a first driven gear (44) and a second driven gear (43), the first driving gear (41) and the second driving gear (42) are oppositely arranged, the driving blade (31) is inserted between the first driving gear and the second driving gear, the first driven gear (44) and the second driven gear (43) are oppositely arranged, and the driven blade (32) is inserted between the first driving gear and the second driven gear.

5. The variable air volume valve structure according to claim 4, wherein the driving shaft is a first plug, two ends of the first plug are respectively and fixedly connected with a first driving gear (41) and the output shaft (2), the driven shaft is a second plug (5), and the three second plugs (5) are respectively connected with a second driving gear (42), a first driven gear (44) and a second driven gear (43).

6. The variable air valve structure according to claim 5, wherein the first plug and the second plug (5) are movably mounted in a mounting hole (11) formed in the case body (1).

7. The variable air volume valve structure according to claim 6, wherein the first plug and the second plug (5) are respectively provided with a limit post and a through hole, and a tapping screw is inserted into the through hole to connect the first driving gear (41), the second driving gear (42), the first driven gear (44) and the second driven gear (43).

8. The variable air valve structure according to claim 7, wherein rib plates (34) and limiting holes (33) are further arranged in the hollow structure of the blade, and the limiting columns penetrate through fluted discs of the driving gear and the driven gear and are matched with the limiting holes (33).

9. The variable air valve structure according to claim 8, wherein the limiting hole (33) is a C-shaped hole, and the limiting groove is located at the center line of the fluted disc of the driving gear and the driven gear.

10. A variable air valve structure according to claim 9, wherein a gasket (6) is arranged between each of the first driving gear (41), the second driving gear (42), the first driven gear (44) and the second driven gear (43) and the box body (1), and the wind shielding small block (442) is further arranged on a single tooth of the fluted disc of the driving gear and the driven gear.