CN220060652U

CN220060652U - Flue check valve

Info

Publication number: CN220060652U
Application number: CN202321145994.7U
Authority: CN
Inventors: 闫荣健
Original assignee: Tianjin Jinkaiyuan Valve Manufacturing Co ltd
Current assignee: Tianjin Jinkaiyuan Valve Manufacturing Co ltd
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-11-21
Anticipated expiration: 2033-05-12

Abstract

The utility model discloses a flue check valve, which comprises a check valve assembly, wherein one side of the check valve assembly is provided with a smoke inlet pipe, the other side of the check valve assembly is provided with a smoke exhaust pipe, the left side of a valve frame on the check valve assembly is provided with a smoke inlet, the right side of the valve frame is provided with a smoke outlet, the outer side wall of the valve frame is provided with a stepping motor in a threaded connection manner, an output shaft of the stepping motor is fixed with a rotating shaft of a driving gear through a coupler, and the right side surface of the smoke inlet is covered with a valve chip. According to the flue check valve, the output shaft of the stepping motor rotates through the driving gear and the sector rack, so that the valve chip can not block the smoke inlet any more, and the smoke inlet and the smoke outlet are communicated; when the smoke inlet pipe and the smoke exhaust pipe are used, the external switch of the stepping motor can be restarted, and the valve core piece is covered on the outer side of the smoke inlet in the same driving mode, so that the smoke inlet and the smoke exhaust port are not communicated any more, and the condition of smoke recharging can be avoided.

Description

Flue check valve

Technical Field

The utility model relates to the field of flues, in particular to a flue check valve.

Background

The conventional flue check valve is hinged with the flue outlet in the common working principle, and when the fume is discharged from the fume discharging system through the flue, the flue check valve is jacked up by utilizing the pressure generated by the flow of the fume in the flue, so that the flue check valve rotates relative to the flue outlet, and the outlet is opened, so that the fume can be discharged from the outlet of the flue; after the oil smoke is completely discharged, the pressure disappears, and the flue check valve returns to the position before rotation through self gravity or the elasticity of the elastic piece, so that the flue outlet is closed;

however, in long-term use, the flue check valve is stained with oil dirt, and the rotation of the hinge of the flue check valve can be influenced due to the existence of the oil dirt, for example, the oil dirt adheres the flue check valve to the outlet, so that the pressure of the oil dirt cannot jack up the flue check valve, or after the oil dirt is exhausted, the oil dirt check valve and the outlet cannot be closed due to the existence of the oil dirt, and therefore the recharging of the oil dirt is caused.

Disclosure of Invention

The present utility model aims to provide a flue check valve which solves the above-mentioned drawbacks of the prior art.

In order to achieve the above-mentioned purpose, provide a flue check valve, including the check valve subassembly, the tobacco pipe of intaking is installed to one side of check valve subassembly, and the opposite side of check valve subassembly is installed and is discharged the tobacco pipe, the valve frame left side on the check valve subassembly has been seted up into the mouth of cigarette, and the mouth of fume has been seted up on the valve frame right side, screw joint installs step motor on the lateral wall of valve frame simultaneously to step motor's output shaft is fixed through the pivot of shaft coupling with the driving gear, and the right side surface of mouth of cigarette is covered with the case piece, and the top welding of case piece has the actuating cylinder.

Preferably, the check valve assembly comprises a valve frame, a smoke inlet, a valve chip and a stepping motor, and a sector rack is welded on the outer side of a driving column at the top of the valve chip.

Preferably, the size of the sector rack is matched with that of the driving gear, and the sector rack is meshed with the driving gear.

Preferably, the valve chip is a rotating structure taking the driving column as a center of a circle, and the rotation angle of the valve chip is in the range of 0-78 degrees.

Preferably, a sealing strip is adhered to the left side surface of the valve chip, the size of the sealing strip is larger than the area of the smoke inlet, and the valve chip covers the smoke inlet and is sealed through the sealing strip.

Preferably, the valve core piece is driven to rotate through the sector rack, the driving gear and the stepping motor, and is in an open state and limited through two groups of limiting columns, and meanwhile the right ends of the limiting columns are welded on the surface of the side wall of the valve frame.

Compared with the prior art, the utility model has the beneficial effects that:

the output shaft of the stepping motor rotates through the driving gear and the sector rack, so that the valve chip can not block the smoke inlet any more, and the smoke inlet and the smoke outlet are communicated;

when the smoke inlet pipe and the smoke exhaust pipe are used, the external switch of the stepping motor can be restarted, and the valve core piece is covered on the outer side of the smoke inlet in the same driving mode, so that the smoke inlet and the smoke exhaust port are not communicated any more, and the condition of smoke recharging can be avoided.

Drawings

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

FIG. 2 is a schematic view of the smoke inlet in an open state according to the structure of the present utility model;

FIG. 3 is a top view of the structure of FIG. 1 of the present utility model;

fig. 4 is a schematic diagram of a rotation track of a valve chip in fig. 1, which is a structural diagram of the present utility model.

Reference numerals in the drawings: 1. a smoke inlet pipe; 2. a smoke exhaust pipe; 3. a check valve assembly; 30. a limit column; 31. a valve frame; 32. a smoke inlet; 33. a smoke outlet; 34. a valve chip; 35. a sealing strip; 36. a drive column; 37. a sector rack; 38. a drive gear; 39. a stepper motor.

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.

Referring to fig. 1-4, the present utility model provides a flue check valve, which comprises a check valve assembly 3, wherein a smoke inlet pipe 1 is installed on one side of the check valve assembly 3, a smoke exhaust pipe 2 is installed on the other side of the check valve assembly 3, a smoke inlet 32 is formed on the left side of a valve frame 31 on the check valve assembly 3, a smoke outlet 33 is formed on the right side of the valve frame 31, a stepping motor 39 is mounted on the outer side wall of the valve frame 31 in a threaded manner, an output shaft of the stepping motor 39 is fixed with a rotating shaft of a driving gear 38 through a coupling, a valve core piece 34 is covered on the right side surface of the smoke inlet 32, and a driving column 36 is welded on the top of the valve core piece 34.

Working principle: when the smoke exhaust device is used, when the smoke inlet pipe 1 and the smoke exhaust pipe 2 are required to be communicated for exhausting smoke, an external switch of the stepping motor 39 can be started at the moment, and an output shaft of the stepping motor 39 rotates through the driving gear 38 and the sector rack 37, so that the valve chip 34 does not block the smoke inlet 32 any more, and the smoke inlet 32 and the smoke exhaust 33 are communicated;

when the smoke inlet pipe 1 and the smoke outlet pipe 2 are used, the external switch of the stepping motor 39 can be restarted, and the valve chip 34 is covered on the outer side of the smoke inlet 32 in the same driving mode, so that the smoke inlet 32 and the smoke outlet 33 are not communicated any more, and the condition of smoke recharging can be avoided.

As a preferred embodiment, the check valve assembly 3 includes a valve frame 31, a smoke inlet 32, a valve chip 34 and a stepping motor 39, and a sector rack 37 is welded to the outside of a driving post 36 on the top of the valve chip 34.

As shown in fig. 1-2: a sector rack 37 is welded on the outer side of the driving column 36, the sector rack 37 is meshed with a driving gear 38, and the valve chip 34 is driven to rotate through a stepping motor 39, so that the smoke inlet 32 is opened and closed.

As a preferred embodiment, the sector rack 37 is adapted to the size of the drive gear 38, and the sector rack 37 is in meshed connection with the drive gear 38.

As shown in fig. 1-3: the sector rack 37 is meshed with the driving gear 38, and under the limiting operation of the limiting post 30, the rotating angle of the valve core piece 34 can be limited, so that the situation that the sector rack 37 is not meshed with the driving gear 38 any more can be avoided.

As a preferred embodiment, the core piece 34 is a rotating structure centered on the driving post 36, and the rotation angle of the core piece 34 ranges from 0 ° to 78 °.

As shown in fig. 1-2: the rotation angle of the valve chip 34 ranges from 0 degrees to 78 degrees, when the valve chip 34 covers the outer side of the smoke inlet 32, the valve chip 34 covers the smoke inlet 32 and is sealed through the sealing strip 35, the sealing performance of the blocked smoke inlet 32 can be ensured, and leakage is not easy to occur.

As a preferred embodiment, the left side surface of the valve chip 34 is adhered with a sealing strip 35, and the sealing strip 35 has a size larger than the area of the smoke inlet 32, while the valve chip 34 is covered on the smoke inlet 32 and sealed by the sealing strip 35.

As a preferred embodiment, the valve chip 34 is driven to rotate by the sector rack 37, the driving gear 38 and the stepping motor 39, and the valve chip 34 is limited by the two sets of limiting posts 30 in the opened state, and the right ends of the limiting posts 30 are welded to the side wall surface of the valve frame 31.

The tobacco pipe is installed in the spiro union of check valve assembly 3 both sides, is convenient for clear up the inside part of check valve assembly 3, and the upper side surface spiro union upper cover of valve frame 31 simultaneously is convenient for clear up the inside part of valve frame 31 through dismantling the upper cover, does not draw in the upper cover diagram.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a flue check valve, includes check valve assembly (3), advances tobacco pipe (1) are installed to one side of check valve assembly (3), and the opposite side of check valve assembly (3) is installed and is discharged tobacco pipe (2), its characterized in that: a smoke inlet (32) is formed in the left side of a valve frame (31) on the check valve assembly (3), a smoke outlet (33) is formed in the right side of the valve frame (31), a stepping motor (39) is mounted on the outer side wall of the valve frame (31) in a threaded connection mode, an output shaft of the stepping motor (39) is fixed with a rotating shaft of a driving gear (38) through a coupler, a valve chip (34) is covered on the right side surface of the smoke inlet (32), and a driving column (36) is welded at the top of the valve chip (34).

2. A flue check valve according to claim 1, wherein: the check valve assembly (3) comprises a valve frame (31), a smoke inlet (32), a valve chip (34) and a stepping motor (39), and a sector rack (37) is welded on the outer side of a driving column (36) at the top of the valve chip (34).

3. A flue check valve according to claim 2, wherein: the size of the sector rack (37) is matched with that of the driving gear (38), and the sector rack (37) is connected with the driving gear (38) in a meshed mode.

4. A flue check valve according to claim 1, wherein: the valve core piece (34) is a rotating structure taking the driving column (36) as a circle center, and the rotating angle of the valve core piece (34) is in the range of 0-78 degrees.

5. A flue check valve according to claim 1, wherein: the left side surface of the valve core piece (34) is adhered with a sealing strip (35), the size of the sealing strip (35) is larger than the area of the smoke inlet (32), and the valve core piece (34) covers the smoke inlet (32) and is sealed through the sealing strip (35).

6. A flue check valve according to claim 1, wherein: the valve core piece (34) is driven to rotate through the sector rack (37), the driving gear (38) and the stepping motor (39), the valve core piece (34) is in an open state and limited through two groups of limiting columns (30), and meanwhile the right end of the limiting column (30) is welded on the side wall surface of the valve frame (31).