CN213176908U

CN213176908U - Check valve for preventing smoke discharge

Info

Publication number: CN213176908U
Application number: CN202021511905.2U
Authority: CN
Inventors: 崔飞
Original assignee: Southwest Forestry University
Current assignee: Southwest Forestry University
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-05-11
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses a check valve for smoke prevention and exhaust, which comprises a valve body, wherein a gas inlet is arranged below the valve body, a bearing installation seat is arranged above the gas inlet, the bearing installation seat is fixedly arranged at the front and rear side walls in the valve body, fixed bearings are all arranged in the bearing installation seat, a supporting rotating shaft is connected and arranged in the front and rear fixed bearings, two sides of the supporting rotating shaft are respectively provided with a check plate, one side of each check plate at two sides extends to the inner side wall of the valve body, the utility model provides a check valve for smoke prevention and exhaust, which has novel structure and reasonable layout, when in use, smoke exhausted by a range hood enters the valve body through the gas inlet at the bottom of the valve body, the check plates in the valve body rotate through the supporting rotating shafts on the bearing installation seat, and form a gas outlet at the position where the check plates are attached to the inner wall of the valve body, the, when the work stops, the non-return plate restores the original position, the backflow condition of the flue gas is prevented, and the environmental protection and the use safety are improved.

Description

Check valve for preventing smoke discharge

Technical Field

The utility model relates to a check valve technical field specifically is a prevent and discharge fume and use check valve.

Background

The flue check valve is generally used in a smoke exhaust channel of a household range hood and comprises a range hood check valve, a plastic telescopic smoke pipe and a flue check valve. The check valve mainly comprises a valve body, a rocker, a valve cover and the like. The check valve of the range hood is also called as an air outlet, an air outlet cover and the like, and is provided with the range hood, the bottom of the range hood is fixed on the top of the range hood through screws, and the upper part of the range hood is connected with a plastic telescopic smoke pipe. Two baffles are generally arranged inside the check valve of the range hood, but the check valve of the traditional range hood has the problem that the baffles are not tightly sealed (no matter how high-grade range hoods are), so that the trouble of returning odor of the range hood is caused. The check valves of the range hoods worn by different brands or models of range hoods are probably different, and the uniform industry standard is not available. However, the caliber of the plastic-connected telescopic smoke tube is basically divided into four types, namely 18cm, 17cm, 16cm and 15 cm.

At present, when the existing check valve is used for a period of time, thick oil stains are accumulated around the valve, so that the valve is stuck and cannot be opened under the action of a range hood and cannot work normally, and meanwhile, the oil stains can influence the closure of the valve to cause smoke in a discharge flue to flow back to a kitchen and a toilet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent smoke exhaust and use check valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a prevent check valve for discharging fume, includes the valve body, the valve body below sets up the gas inlet, the gas inlet top sets up the bearing mount pad, both sides wall around bearing mount pad fixed mounting is in the valve body, all install fixing bearing in the bearing mount pad, two fixing bearing internal connections set up the support pivot around, it sets up the retaining plate respectively to support the pivot both sides, both sides retaining plate one side extends to the valve body inside wall, it sets up the torsional spring to support the pivot top, the retaining plate is done to the torsional spring connection both sides, retaining plate top valve body inside wall sets up the fixed plate, it sets up the filter to correspond the below retaining plate on the fixed plate.

During operation, the gas inlet entering valve body of lampblack absorber exhaust flue gas bottom the valve body, the non-return board in the valve body passes through the rotation of the support pivot on the bearing mount pad to form the gas outlet in non-return board laminating valve body inner wall position, flue gas upwards discharges from this, filters the discharge through the filter of valve body top to the flue gas, and when the work stops, the non-return board resumes the normal position, blocks that the backward flow condition appears in the flue gas, promotes environmental protection and safety in utilization.

As a further aspect of the present invention: the oil collecting groove is formed above the two check plates, the oil collecting groove is corresponding to the filter above, oil stains filtered by the oil collecting groove can fall into the oil collecting groove, the oil stains are prevented from influencing the closing of the check plates, and the practicability is improved.

As a further aspect of the present invention: the sealing gasket is arranged at the position, attached to the inner side wall of the valve body, of the outer side of the check plate, and the sealing performance of the check plate on the valve body is improved through the sealing gasket, so that the backflow of smoke is prevented.

As a further aspect of the present invention: the valve body top sets up the mounting panel, the mounting panel both sides set up mounting bolt, promote the stability of valve body through mounting panel and mounting bolt.

As a further aspect of the present invention: the air pump is arranged on each of two sides above the fixed plate, the air pump is provided with an air exhaust pipe, the air exhaust pipe is connected with the filter, and the air inlet efficiency to the lower part is achieved through the air pump and the air exhaust pipe.

As a further aspect of the present invention: the filter inboard sets up filtering channel, filtering channel both sides set up the grease proofing dirt board, grease proofing dirt board upside sets up the fixed block respectively, the fixed block bottom sets up the buffer beam, the buffer beam bottom sets up the filter, filters the discharge through the filter to the flue gas that gets into, promotes the feature of environmental protection.

As a further aspect of the present invention: all set up filter plate about filter inside, two filter plate inside set up filter pulp, further promote the filter effect through filter plate and filter pulp.

As a further aspect of the present invention: the bottom of the two sides of the torsion spring is provided with a connecting block, the connecting block is fixedly installed on the upper surface of the check plate, the connecting block is an elastic block, the check plate is buffered when rotating through the elastic block, and the safety is improved.

Compared with the prior art, the utility model discloses the beneficial effect of following several aspects has:

1. the utility model provides a prevent check valve for discharging fume, novel structure and rationally distributed, the during operation, the gas inlet entering valve body of lampblack absorber exhaust flue gas bottom the valve body is passed through, the retaining plate in the valve body passes through the rotation of the support pivot on the bearing mount pad, and form the gas outlet at retaining plate laminating valve body inner wall position, the flue gas upwards discharges from this, filter the discharge to the flue gas through the filter of valve body top, when the work stops, the retaining plate resumes the normal position, block the flue gas condition of backward flow appearing, promote environmental protection and safety in utilization.

2. The utility model discloses it is further two end and end the board top and all set up the oil trap, the oil trap is corresponding in the top filter, can fall into the oil trap through filterable greasy dirt inside, prevents that the greasy dirt from influencing the closure that ends the board, promotes the practicality.

3. The utility model discloses it is further only contrary board outside laminating valve body inside wall position sets up sealed the pad, promotes the leakproofness of only contrary board to the valve body through sealed the pad, prevents the flue gas backward flow.

4. The utility model discloses it is further fixed plate top both sides all set up the air pump, set up the exhaust tube on the air pump, the filter is connected to the exhaust tube, through air pump and exhaust tube to the below efficiency of admitting air.

Drawings

FIG. 1 is a schematic side view of a check valve for smoke prevention and exhaust;

FIG. 2 is a schematic top sectional view of a check valve for smoke prevention and exhaust;

FIG. 3 is a schematic cross-sectional side view of a filter of a smoke check valve;

fig. 4 is a schematic perspective view of a check plate in a smoke prevention and exhaust check valve.

In the figure: 1. a valve body; 2. a torsion spring; 3. a gas inlet; 4. a bearing mount; 5. a backstop plate; 6. a gasket; 7. mounting a plate; 8. an air pump; 9. an air exhaust pipe; 10. a fixing plate; 11. a filter; 12. installing a bolt; 13. connecting blocks; 14. an oil sump; 15. a support shaft; 16. fixing the bearing; 17. a filter plate; 18. a fixed block; 19. a buffer rod; 20. an oil-stain-resistant plate; 21. filtering cotton; 22. a filter screen plate; 23. and (4) filtering the channel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, a check valve for smoke prevention and exhaust includes a valve body 1, an air inlet 3 is disposed below the valve body 1, a bearing mounting seat 4 is disposed above the air inlet 3, the bearing mounting seat 4 is fixedly mounted on the front and rear side walls of the valve body 1, fixed bearings 16 are mounted in the bearing mounting seat 4, a supporting rotating shaft 15 is connected and disposed in the front and rear fixed bearings 16, check plates 5 are disposed on two sides of the supporting rotating shaft 15, one side of each of the check plates 5 on two sides extends to the inner side wall of the valve body 1, a torsion spring 2 is disposed above the supporting rotating shaft 15, the torsion spring 2 is connected to the check plates 5 on two sides, a fixing plate 10 is disposed on the inner side wall of the valve body 1 above the check plate 5, and a filter 11 is disposed on the fixing plate.

The oil collecting grooves 14 are formed above the two check plates 5, the oil collecting grooves 14 correspond to the filters 11 above, and oil stains filtered by the oil collecting grooves 14 fall into the oil collecting grooves 14, so that the oil stains are prevented from influencing the closing of the check plates 5, and the practicability is improved; a sealing gasket 6 is arranged at the position, which is attached to the inner side wall of the valve body 1, of the outer side of the check plate 5, and the sealing performance of the check plate 5 on the valve body 1 is improved through the sealing gasket 6, so that the backflow of smoke is prevented; the bottom of the two sides of the torsion spring is provided with a connecting block 13, the connecting block 13 is fixedly installed on the upper surface of the non-return plate, the connecting block 13 is an elastic block, and the non-return plate is buffered when rotating through the elastic block, so that the safety is improved.

An installation plate 7 is arranged above the valve body 1, installation bolts 12 are arranged on two sides of the installation plate 7, and the stability of the valve body 1 is improved through the installation plate 7 and the installation bolts 12; air pumps 8 are arranged on two sides above the fixing plate 10, an air pumping pipe 9 is arranged on each air pump 8, each air pumping pipe 9 is connected with a filter 11, and air inlet efficiency is achieved below through the air pumps 8 and the air pumping pipes 9; the filter 11 is internally provided with a filtering channel 23, two sides of the filtering channel 23 are provided with oil-proof boards 20, the upper sides of the oil-proof boards 20 are respectively provided with a fixed block 18, the bottom of the fixed block 18 is provided with a buffer rod 19, the bottom of the buffer rod 19 is provided with a filter plate 17, and the filter plate 17 is used for filtering and discharging the entering smoke, so that the environmental protection is improved; all set up filter plate 22 about filter 17 is inside, two filter plate 22 are inside to be set up filter pulp 21, further promote the filter effect through filter plate 22 and filter pulp 21.

The utility model discloses a theory of operation is: during operation, the gas inlet 3 entering valve body 1 of lampblack absorber exhaust flue gas through 1 bottom of valve body, the non-return board 5 in the valve body 1 rotates through the support pivot 15 on the bearing mount pad 4 to form the gas outlet in the non-return board 5 laminating valve body 1 inner wall position, the flue gas upwards discharges from this, filter 11 through 1 top of valve body filters the discharge to the flue gas, when the work stops, non-return board 5 resumes the normal position, block that the backward flow condition appears in the flue gas, promote environmental protection and safety in utilization.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A check valve for smoke prevention and exhaust comprises a valve body (1) and is characterized in that a gas inlet (3) is arranged below the valve body (1), a bearing mounting seat (4) is arranged above the gas inlet (3), the bearing mounting seat (4) is fixedly arranged on the front and rear side walls in the valve body (1), fixed bearings (16) are arranged in the bearing mounting seat (4), a supporting rotating shaft (15) is connected and arranged in the front fixed bearing (16) and the rear fixed bearing (16), the two sides of the supporting rotating shaft (15) are respectively provided with a check plate (5), one side of the two side check plates (5) extends to the inner side wall of the valve body (1), a torsion spring (2) is arranged above the supporting rotating shaft (15), the torsion spring (2) is connected with the backstop plates (5) at the two sides, a fixed plate (10) is arranged on the inner side wall of the valve body (1) above the non-return plate (5), and a filter (11) is arranged on the fixing plate (10) corresponding to the non-return plate (5) below.

2. A smoke and smoke prevention check valve as recited in claim 1, wherein an oil collecting tank (14) is provided above each of said two check plates (5), and said oil collecting tank (14) corresponds to the upper filter (11).

3. The check valve for preventing smoke and discharging according to claim 1, wherein a sealing gasket (6) is arranged at the position where the outer side of the check plate (5) is attached to the inner side wall of the valve body (1).

4. The check valve for preventing smoke discharge according to claim 1, wherein a mounting plate (7) is arranged above the valve body (1), and mounting bolts (12) are arranged on two sides of the mounting plate (7).

5. The check valve for preventing smoke and exhaust according to any one of claims 1 to 4, wherein air pumps (8) are arranged on two sides above the fixing plate (10), an air pumping pipe (9) is arranged on each air pump (8), and the air pumping pipe (9) is connected with a filter (11).

6. The smoke exhaust prevention check valve according to claim 5, wherein a filtering channel (23) is arranged inside the filter (11), oil pollution prevention plates (20) are arranged on two sides of the filtering channel (23), fixed blocks (18) are respectively arranged on the upper sides of the oil pollution prevention plates (20), a buffer rod (19) is arranged at the bottom of each fixed block (18), and a filter plate (17) is arranged at the bottom of each buffer rod (19).

7. The check valve for preventing smoke discharge according to claim 6, wherein the filter plate (17) is provided with filter screen plates (22) at the upper and lower parts, and the filter cotton (21) is arranged inside the two filter screen plates (22).

8. The smoke exhaust prevention check valve according to claim 7, wherein the bottom of the torsion spring (2) is provided with a connecting block (13), the connecting block (13) is fixedly arranged on the upper surface of the check plate, and the connecting block (13) is an elastic block.