Flue check valve

Abstract

The utility model discloses a flue check valve which comprises a shell provided with an inner cavity, and an air opening is formed in the bottom wall of the inner cavity; the switch assembly is arranged in the inner cavity and comprises a cover body and a rotating assembly, the rotating assembly comprises a fixed end and a movable end, the fixed end is connected with the shell, the movable end is connected with the cover body, and the cover body covers the air opening. The locking assembly comprises at least one group of locking units, each locking unit comprises a temperature sensing part, an elastic part and a locking rod, the locking rod is rotatably arranged in the inner cavity, the temperature sensing part locks the locking rod, and the elastic part drives the locking rod to abut against the cover body. When the temperature is higher than the set temperature, the temperature sensing component loosens the locking rod, the elastic piece drives the locking rod to make contact with the cover body, the locking rod drives the cover body to gradually close the air opening and lock the cover body, the air opening is kept closed, the non-return function is achieved through the temperature sensing component, the structure is simple, and the risk of damage in transportation is reduced; and the reliability of the check valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flues, in particular to a flue check valve. Background Art

[0002] The current check valves used in flues are usually equipped with temperature sensors. When a fire occurs in the external flue, the check valve closes to prevent the external open flame from entering the internal space through the flue. However, the temperature sensor can be easily damaged during transportation, causing the check valve to fail, reducing reliability and increasing transportation costs. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a flue check valve, which has a simple and reliable structure and reduces the risk of damage and failure.

[0004] According to the first embodiment of the utility model, the flue check valve comprises: a housing provided with an inner cavity, the bottom wall of the inner cavity being provided with an air outlet; a switch assembly provided in the inner cavity, comprising a cover body and a rotating assembly, the rotating assembly comprising a fixed end and a movable end, the fixed end being connected to the housing, the movable end being connected to the cover body, and the cover body covering the air outlet. A locking assembly comprises at least one set of locking units, the locking unit comprising a temperature sensing component, an elastic component and a locking rod, the locking rod being rotatably provided in the inner cavity, the temperature sensing component locking the locking rod, and the elastic component driving the locking rod to abut against the cover body.

[0005] The flue check valve according to the embodiment of the utility model has at least the following beneficial effects: the rotating assembly drives the cover body to rotate, so that the air outlet is opened to maintain ventilation; when the temperature is higher than the set temperature, the temperature sensing component releases the locking rod, and the elastic component drives the locking rod to contact the cover body, and the locking rod drives the cover body to gradually close the air outlet and lock the cover body to keep the air outlet closed; the check function is achieved by the temperature sensing component, the structure is simple, the risk of damage during transportation is reduced, and the reliability of the check valve is improved.

[0006] According to some embodiments of the utility model, the rotating assembly includes a movable seat, a first rotating shaft and a torsion spring, the movable seat is arranged on the inner wall of the inner cavity, the movable seat is connected to the cover body, the torsion spring is sleeved on the first rotating shaft, and the torsion spring drives the movable seat to rotate.

[0007] According to some embodiments of the utility model, the movable seat includes a first mounting seat and a rotating seat, the first mounting seat is arranged on the shell, the first rotating shaft passes through the first mounting seat and the rotating seat at the same time, the rotating seat is connected to the cover body, one end of the torsion spring is connected to the rotating seat, and the other end of the torsion spring is connected to the first mounting seat.

[0008] According to some embodiments of the utility model, one end of the first rotating shaft is threadedly connected with a nut, and the other end of the first rotating shaft is provided with a positioning portion, and the positioning portion cooperates with the nut to stabilize the rotating seat on the first mounting seat.

[0009] According to some embodiments of the utility model, the locking unit also includes a second mounting seat, the second mounting seat is arranged on the shell, the locking rod is hinged to the second mounting seat, the second mounting seat is provided with a limit block, and the limit block is used to limit the rotational travel of the locking rod.

[0010] According to some embodiments of the present invention, the locking rod is bent to form a second rotating shaft, the second rotating shaft is rotatably plugged into the second mounting seat, and the locking rod rotates in a horizontal direction around the second rotating shaft.

[0011] According to some embodiments of the present utility model, the limit block is provided with a locking position, and the locking position matches the locking rod.

[0012] According to some embodiments of the utility model, the bottom wall of the inner cavity protrudes inward to form a boss, the boss is arranged obliquely, the air outlet is opened on the boss, and the rotating assembly is arranged on the lower side of the boss.

[0013] According to some embodiments of the present utility model, the temperature sensing component is provided with a lock buckle, and the lock buckle is buckled with the locking rod.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 A schematic diagram of a flue check valve according to an embodiment of the utility model;

[0017] Figure 2 It is a cross-sectional view of a flue check valve according to an embodiment of the utility model.

[0018] Description of reference numerals:

[0019] Housing 100, air outlet 110, boss 120;

[0020] Cover 210, rotating assembly 220, first mounting seat 221, torsion spring 222, first rotating shaft 223, nut 224, rotating seat 225;

[0021] The locking rod 310 , the second rotating shaft 311 , the second mounting seat 320 , the limiting block 321 , the locking position 322 , the temperature sensing component 330 , and the locking buckle 331 . DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Reference Figure 1 and Figure 2 The flue check valve of the first embodiment of the utility model comprises: a housing 100, provided with an inner cavity, the bottom wall of which is provided with an air port 110; a switch assembly, provided in the inner cavity, comprising a cover 210 and a rotating assembly 220, the rotating assembly 220 comprising a fixed end and a movable end, the fixed end being connected to the housing 100, the movable end being connected to the cover 210, and the cover 210 covering the air port 110. A locking assembly, comprising at least one set of locking units, the locking unit comprising a temperature sensing component 330, an elastic member and a locking rod 310, the locking rod 310 being rotatably provided in the inner cavity, the temperature sensing component 330 locking the locking rod 310, and the elastic member driving the locking rod 310 to abut against the cover 210.

[0027] The rotating assembly 220 drives the cover 210 to rotate, so that the air vent 110 is opened to maintain ventilation. When the temperature is higher than the set temperature, the temperature sensing component 330 releases the locking rod 310, and the elastic member drives the locking rod 310 to contact the cover 210. The locking rod 310 drives the cover 210 to gradually close the air vent 110 and locks the cover 210 to keep the air vent 110 closed. The non-return function is realized by the temperature sensing component 330, and the structure is simple, the risk of transportation damage is reduced, and the reliability of the non-return valve is improved. The temperature sensing component 330 is provided with a lock buckle 331, and the lock buckle 331 is buckled with the lock bar 310. The lock buckle 331 is made of metal. The lock buckle 331 is deformed by heat, so that the lock buckle 331 gradually loosens the lock bar 310. The elastic member drives the lock bar 310 to rotate, and the cover 210 is automatically locked after the temperature rises to the set temperature. It is simple and efficient, not easy to be damaged, and has high reliability.

[0028] It is understandable that, referring to Figure 1 and Figure 2 The rotating assembly 220 includes a movable seat, a first rotating shaft 223 and a torsion spring 222. The movable seat is arranged on the inner wall of the inner cavity, the movable seat is connected to the cover body 210, and the torsion spring 222 is sleeved on the first rotating shaft 223. The torsion spring 222 drives the movable seat to rotate. The movable seat drives the cover body 210 to rise by driving the movable seat to rotate through the torsion spring 222, so that the air outlet 110 remains in a normally open state at normal temperature.

[0029] Specifically, refer to Figure 1 and Figure 2 The movable seat includes a first mounting seat 221 and a rotating seat 225. The first mounting seat 221 is arranged on the housing 100. The first rotating shaft 223 passes through the first mounting seat 221 and the rotating seat 225 at the same time. The rotating seat 225 is connected to the cover body 210. One end of the torsion spring 222 is connected to the rotating seat 225, and the other end of the torsion spring 222 is connected to the first mounting seat 221. The rotating seat 225 can be connected to the cover body 210 by welding or screws. The first mounting seat 221 is installed on the side wall of the inner cavity. The rotating seat 225 is driven to rotate by the torsion spring 222, so that the rotating seat 225 drives the cover body 210 to rotate.

[0030] It is understandable that, referring to Figure 1 and Figure 2 One end of the first rotating shaft 223 is threadedly connected with a nut 224, and the other end of the first rotating shaft 223 is provided with a positioning portion, and the positioning portion cooperates with the nut 224 to stabilize the rotating seat 225 on the first mounting seat 221. Tighten the nut 224, the nut 224 cooperates with the positioning portion, and the rotating seat 225 is installed on the first mounting seat 221.

[0031] It is understandable that, referring to Figure 1 and Figure 2The locking unit further includes a second mounting seat 320, which is disposed on the housing 100. The locking rod 310 is hingedly connected to the second mounting seat 320. The second mounting seat 320 is provided with a limiting block 321, which is used to limit the rotation stroke of the locking rod 310. By providing the limiting block 321, when the locking rod 310 rotates to abut against the cover body 210, the limiting block 321 abuts against the locking rod 310, so that the locking rod 310 stops rotating, and the locking rod 310 is prevented from continuing to rotate and being separated from the cover body 210, thereby improving the reliability of the locking rod 310.

[0032] Specifically, refer to Figure 1 and Figure 2 The lock rod 310 is bent to form a second shaft 311, and the second shaft 311 is rotatably plugged into the second mounting seat 320, and the lock rod 310 rotates in the horizontal direction around the second shaft 311. Part of the lock rod 310 is bent to prevent the cover 210 from interfering with the lock rod 310 when the air outlet 110 is opened.

[0033] It is understandable that, referring to Figure 1 and Figure 2 The limit block 321 is provided with a latching position 322, which matches the locking rod 310. The locking rod 310 rotates and abuts against the limit block 321, and then the locking rod 310 is latched into the latching position 322, so that the locking rod 310 remains stable and prevents the second rotating shaft 311 from escaping from the second mounting seat 320, thereby improving stability.

[0034] It is understandable that, referring to Figure 1 and Figure 2 The bottom wall of the inner cavity protrudes inward to form a boss 120, the boss 120 is arranged obliquely, the air outlet 110 is opened on the boss 120, and the rotating assembly 220 is arranged on the lower side of the boss 120. The air outlet 110 is arranged on the inclined boss 120, so that the air outlet 110 is inclined to discharge air, and the rotating assembly 220 is arranged on the lower side, so that the air outlet 110 can be opened at a lower rotation angle, reducing the difficulty of opening the air outlet 110. At the same time, the air outlet 110 is inclined, so that the locking rod 310 abuts against the cover body 210 and locks the cover body 210. The cover body 210 is subjected to the pressure applied by the locking rod 310, so that the cover body 210 remains covered on the air outlet 110, improving the reliability of the locking mechanism.

[0035] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Flue check valve, characterized in that: include: The shell is provided with an inner cavity, and the bottom wall of the inner cavity is provided with an air outlet; A switch assembly is arranged in the inner cavity, and includes a cover body and a rotating assembly, wherein the rotating assembly includes a fixed end and a movable end, wherein the fixed end is connected to the housing, and the movable end is connected to the cover body, and the cover body covers the air outlet; The locking assembly includes at least one locking unit, wherein the locking unit includes a temperature sensing component, an elastic component and a locking rod, wherein the locking rod is rotatably arranged in the inner cavity, the temperature sensing component locks the locking rod, and the elastic component drives the locking rod to abut against the cover body.

2. The flue check valve according to claim 1, characterized in that: The rotating assembly includes a movable seat, a first rotating shaft and a torsion spring. The movable seat is arranged on the inner wall of the inner cavity, the movable seat is connected to the cover body, the torsion spring is sleeved on the first rotating shaft, and the torsion spring drives the movable seat to rotate.

3. The flue check valve according to claim 2, characterized in that: The movable seat includes a first mounting seat and a rotating seat, the first mounting seat is arranged on the shell, the first rotating shaft passes through the first mounting seat and the rotating seat at the same time, the rotating seat is connected to the cover body, one end of the torsion spring is connected to the rotating seat, and the other end of the torsion spring is connected to the first mounting seat.

4. The flue check valve according to claim 3, characterized in that: One end of the first rotating shaft is threadedly connected with a nut, and the other end of the first rotating shaft is provided with a positioning portion, and the positioning portion cooperates with the nut to stabilize the rotating seat on the first mounting seat.

5. The flue check valve according to claim 1, characterized in that: The locking unit further comprises a second mounting seat, the second mounting seat is arranged on the housing, the locking rod is hinged to the second mounting seat, the second mounting seat is provided with a limiting block, and the limiting block is used to limit the rotational travel of the locking rod.

6. The flue check valve according to claim 5, characterized in that: The locking rod is bent to form a second rotating shaft, the second rotating shaft is rotatably plugged into the second mounting seat, and the locking rod rotates in a horizontal direction around the second rotating shaft.

7. The flue check valve according to claim 6, characterized in that: The limit block is provided with a locking position, and the locking position matches the locking rod.

8. The flue check valve according to claim 1, characterized in that: The bottom wall of the inner cavity protrudes inward to form a boss, the boss is inclined, the air outlet is opened on the boss, and the rotating component is arranged on a lower side of the boss.

9. The flue check valve according to claim 1, characterized in that: The temperature sensing component is provided with a lock buckle, and the lock buckle is buckled with the locking rod.

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