Fireproof check valve

Abstract

The utility model discloses a fireproof check valve, and relates to the field of check valve manufacturing devices. The fireproof check valve comprises a check valve body and a valve plate rotationally connected to the interior of the check valve body, a fixing frame is fixedly connected to the lower portion of the check valve body, an emergency locking mechanism is arranged in the fixing frame, and a gear is fixedly connected to the bottom of the valve plate; the clamping blocks are arranged on the two sides of the gear and used for limiting the position of the gear. The two-way screw is arranged below the clamping block and used for driving the clamping block to move. According to the fireproof check valve, when the temperature reaches a set value, the driving motor can be started to drive the clamping block to move, the purpose of locking the valve plate is achieved, meanwhile, if the fire disaster condition is restrained and the check valve is not damaged, a user can restart the driving motor, so that the valve plate can continue to rotate freely and be put into use.

Description

Technical Field

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

[0002] Generally, buildings use integrated smoke exhaust vents, so in order to prevent smoke from other homes from entering, a fire check valve is usually installed at the entrance of the range hood;

[0003] The fire check valve is generally a one-way channel, and a fuse is set on the back. When the dimensions on both sides reach the moving value, the fuse will break, so that the support rod supports the back of the fire check valve, making both sides of the fire check valve inaccessible, thereby effectively preventing the fire from spreading through the smoke outlet;

[0004] However, in actual use, since the fuse is set on the back, one side of the check valve may cause wear to the fuse when the check valve is in use, causing the fuse to break for no reason. The check valve cannot be used again after the fuse is blown. At the same time, the fire-proof check valve is generally installed at the smoke vent, which is difficult to replace. In view of the above situation, we propose a fire-proof check valve. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a fire-proof check valve, which solves the problem that the check valve cannot be reused after being fused. At the same time, the fire-proof check valve is generally installed at the smoke outlet, which is difficult to replace.

[0006] To achieve the above purpose, the utility model is implemented by the following technical solutions: a fire-proof check valve comprises a check valve body and a valve plate rotatably connected to the inside of the check valve body, a fixing frame is fixedly connected to the bottom of the check valve body, an emergency locking mechanism is arranged inside the fixing frame, and the emergency locking mechanism comprises:

[0007] A gear fixedly connected to the bottom of the valve plate;

[0008] A clamping block is arranged on both sides of the gear and is used to limit the position of the gear;

[0009] The bidirectional screw is arranged below the clamping block and is used to drive the clamping block to move.

[0010] Preferably, a fixed plate is provided below the card block, a movable plate is slidably connected inside the fixed plate, the movable plate is threadedly connected inside with a bidirectional screw, the top of the movable plate is fixedly connected to the bottom of the card block, the top of the bidirectional screw is fixedly connected to a driving motor, and the bottom of the driving motor is fixedly connected to the inside of the fixed frame.

[0011] Preferably, a battery is fixedly connected to one side of the fixed plate, and the battery is used for emergency power supply. Temperature sensors are provided on both sides of the valve plate, and the temperature sensors are fixedly connected to the inner wall of the check valve body.

[0012] Preferably, rubber is fixedly connected around the valve plate.

[0013] Preferably, a servo motor is fixedly connected to the top of the fixing plate, an output end of the servo motor is fixedly connected to the bottom end of the gear, and a socket is provided inside the fixing plate.

[0014] Preferably, the top end of the check valve body is fixedly connected to a front mounting plate, and the tail end of the check valve body is fixedly connected to a rear mounting plate.

[0015] The utility model discloses a fire-proof check valve, which has the following beneficial effects:

[0016] When the temperature of the fireproof check valve reaches the set value, the drive motor will be started to drive the block to move, so that the blocks on both sides will lock the gears, thereby achieving the purpose of locking the valve plate. At the same time, the drive block uses a bidirectional screw, which itself has a certain locking function. Therefore, if the drive motor is damaged after starting, it will not affect the locking of the gear by the block. At the same time, if the fire situation is suppressed, the check valve can restart the drive motor when it is not damaged, so that the valve plate can continue to rotate freely and be put into use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the overall outer surface structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall internal structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall bottom structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the emergency locking mechanism of the utility model;

[0022] Figure 5 It is a cross-sectional view of the overall structure of the utility model.

[0023] In the figure: 1. check valve body; 2. front mounting plate; 201. rear mounting plate; 3. valve plate; 301. rubber; 302. servo motor; 4. socket; 5. emergency locking mechanism; 501. fixed plate; 502. bidirectional screw; 503. drive motor; 504. moving plate; 505. block; 506. gear; 507. battery; 508. temperature sensor; 6. fixed frame. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The embodiment of the present application provides a fire-proof check valve, which solves the problem that the check valve cannot be reused after it has melted. At the same time, the fire-proof check valve is generally installed at the smoke vent, which makes it difficult to replace.

[0026] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] The utility model embodiment discloses a fire-proof check valve.

[0028] According to the attached Figure 1-5 As shown, it includes a check valve body 1 and a valve plate 3 rotatably connected to the inside of the check valve body 1, a fixing frame 6 is fixedly connected to the bottom of the check valve body 1, and an emergency locking mechanism 5 is arranged inside the fixing frame 6. The emergency locking mechanism 5 includes:

[0029] A gear 506, which is fixedly connected to the bottom of the valve plate 3;

[0030] A clamping block 505 is disposed on both sides of the gear 506 and is used to limit the position of the gear 506;

[0031] The bidirectional screw 502 is arranged below the block 505. The bidirectional screw 502 is used to drive the block 505 to move. When in use, the user fixes the rear mounting plate 201 at the bottom of the check valve body 1 to the wall, then clamps the front mounting plate 2 to the front end of the connecting pipe of the range hood, and then plugs the connecting line into the inside of the socket 4. At the same time, the connecting line is arranged so that the power supply of the range hood is associated with the check valve, so that the start of the range hood can drive the check valve to start. When a fire occurs, the temperature sensor 508 senses the temperature change and starts the servo motor 302 closes the valve plate 3, and then the drive motor 503 is started urgently. The drive motor 503 drives the bidirectional screw 502 to rotate, and then drives the movable plate 504 to move, so that the block 505 is connected to the two sides of the gear 506, and then the position of the gear 506 is limited, thereby limiting the position of the valve plate 3, thereby achieving the purpose of fire prevention. If the fire does not spread and the check valve is not damaged, the user can start the drive motor 503 to drive the block 505 to move away, so that the check valve can be put into use again, thereby realizing the reuse of the check valve.

[0032] A fixed plate 501 is provided below the block 505, and a movable plate 504 is slidably connected inside the fixed plate 501. The inside of the movable plate 504 is threadedly connected to the bidirectional screw 502. The top of the movable plate 504 is fixedly connected to the bottom of the block 505. The top of the bidirectional screw 502 is fixedly connected to a driving motor 503. The bottom 503 of the driving motor is fixedly connected to the inside of the fixed frame 6. The driving motor 503 can drive the bidirectional screw 502 to rotate, and the bidirectional screw 502 drives the movable plate 504 to move.

[0033] A battery 507 is fixedly connected to one side of the fixed plate 501, and the battery 507 is used for emergency power supply. Temperature sensors 508 are arranged on both sides of the valve plate 3. The temperature sensor 508 (the reference model is the thermocouple temperature sensor of I STAG) is fixedly connected to the inner wall of the check valve body 1. The temperature sensor 508 can be used to detect the temperature, and the battery 507 can provide power to the check valve in an emergency.

[0034] The valve plate 3 is fixedly connected with rubber 301 around its periphery. The rubber 301 can increase the sealing performance of the valve plate 3 . The outer surface of the rubber 301 is coated with a fireproof coating.

[0035] The top of the fixed plate 501 is fixedly connected with a servo motor 302, the output end of the servo motor 302 is fixedly connected to the bottom end of the gear 506, a socket 4 is provided inside the fixed plate 501, the servo motor 302 drives the valve plate 3 to rotate, and the socket 4 is electrically connected to the power supply.

[0036] The top end of the check valve body 1 is fixedly connected with a front mounting plate 2, and the tail end of the check valve body 1 is fixedly connected with a rear mounting plate 201. The front mounting plate 2 and the rear mounting plate 201 together mount the check valve body 1 at a designated position.

[0037] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0038] When the temperature reaches the set value, the fireproof check valve will start the driving motor 503 to drive the block 505 to move, so that the blocks 505 on both sides lock the gear 506, thereby achieving the purpose of locking the valve plate 3. At the same time, the driving block 505 uses a bidirectional screw 502, and the bidirectional screw 502 itself has a certain locking function. Therefore, if the driving motor 503 is damaged after starting, it will not affect the locking of the gear 506 by the block 505. At the same time, if the fire situation is suppressed, the check valve can restart the driving motor 503 when it is not damaged, so that the valve plate 3 can continue to rotate freely and be put into use.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A fireproof check valve, comprising a check valve body (1) and a valve plate (3) rotatably connected to the inside of the check valve body (1), wherein a fixing frame (6) is fixedly connected to the bottom of the check valve body (1), characterized in that: An emergency locking mechanism (5) is arranged inside the fixing frame (6), and the emergency locking mechanism (5) comprises: A gear (506) fixedly connected to the bottom of the valve plate (3); A clamping block (505) is arranged on both sides of the gear (506), and the clamping block (505) is used to limit the position of the gear (506); The bidirectional screw rod (502) is arranged below the clamping block (505), and the bidirectional screw rod (502) is used to drive the clamping block (505) to move.

2. A fire-proof check valve according to claim 1, characterized in that: A fixed plate (501) is arranged below the clamping block (505), a movable plate (504) is slidably connected inside the fixed plate (501), the inside of the movable plate (504) is threadedly connected to the bidirectional screw (502), the top of the movable plate (504) is fixedly connected to the bottom of the clamping block (505), the top of the bidirectional screw (502) is fixedly connected to a driving motor (503), and the bottom of the driving motor (503) is fixedly connected to the inside of the fixed frame (6).

3. A fire-proof check valve according to claim 2, characterized in that: A battery (507) is fixedly connected to one side of the fixed plate (501), and the battery (507) is used for emergency power supply. Temperature sensors (508) are arranged on both sides of the valve plate (3), and the temperature sensors (508) are fixedly connected to the inner wall of the check valve body (1).

4. A fire-proof check valve according to claim 1, characterized in that: The valve plate (3) is fixedly connected with rubber (301) around its periphery.

5. A fire-proof check valve according to claim 3, characterized in that: A servo motor (302) is fixedly connected to the top of the fixed plate (501), an output end of the servo motor (302) is fixedly connected to the bottom end of the gear (506), and a socket (4) is provided inside the fixed plate (501).

6. A fire-proof check valve according to claim 1, characterized in that: The top end of the check valve body (1) is fixedly connected to a front mounting plate (2), and the tail end of the check valve body (1) is fixedly connected to a rear mounting plate (201).

Images