Combined fireproof check valve

Abstract

The utility model belongs to the technical field of check valves, and particularly relates to a combined type fireproof check valve which comprises a valve body. Flange plates are fixedly connected to the two sides of the valve body, a connecting block is fixedly connected to the top of the surface of the valve body, a rod base is fixedly connected to the back face of the connecting block, a rotating rod is rotatably connected to the front face of the rod base in the connecting block, a connecting rod is fixedly connected to the bottom of the rotating rod, and a valve clack is fixedly connected to the bottom of the connecting rod. A sealing mechanism is fixedly connected to one side of the connecting block on the outer wall of the valve clack; through the arrangement of the sealing mechanism, the reliable sealing effect is provided, it is ensured that when the valve is closed, medium leakage is prevented, effective sealing is achieved, the problem of medium leakage is avoided, normal operation of the system is guaranteed, the safety and efficiency of the whole system are improved, a fire source can be effectively isolated when a fire happens, and the risk of fire spreading is reduced; and safety of equipment and personnel is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically a combined fireproof check valve. Background Technology

[0002] A check valve is a type of valve whose opening and closing element is a circular valve disc that relies on its own weight and the pressure of the medium to prevent backflow. It belongs to the category of automatic valves and is also known as a non-return valve, one-way valve, reflux valve, or isolation valve. The valve disc movement is divided into lift type and swing type. The lift type check valve is structurally similar to a gate valve, except that it lacks the valve stem that drives the valve disc. The medium flows in from the inlet end (bottom) and flows out from the outlet end (top). When the inlet pressure is greater than the sum of the valve disc's weight and its flow resistance, the valve is opened; conversely, when the medium flows back, the valve is closed.

[0003] The sealing performance of existing combined fireproof check valves may not be guaranteed, which will affect the fireproof effect and fail to effectively prevent the spread of fire in the piping system, increasing the risk of fire spread.

[0004] Therefore, a combined fireproof check valve is proposed to address the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing technology has the disadvantage of poor sealing performance. To address this, we propose a combined fireproof check valve.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a combined fireproof check valve, including a valve body; flanges are fixedly connected to both sides of the valve body, a connecting block is fixedly connected to the top of the valve body surface, a rod seat is fixedly connected to the back of the connecting block, a rotating rod is rotatably connected to the front of the rod seat inside the connecting block, a connecting rod is fixedly connected to the bottom of the rotating rod, a valve disc is fixedly connected to the bottom of the connecting rod, and a sealing mechanism is fixedly connected to one side of the connecting block on the outer wall of the valve disc.

[0007] Preferably, the sealing mechanism is provided with a fixing sleeve, and a connecting plate is movably connected to the top of the fixing sleeve.

[0008] Preferably, a fire-resistant sealing gasket is fixedly connected to the bottom of the connecting plate, and a pull block is fixedly connected to the top of the connecting plate.

[0009] Preferably, the front and back of the surface connecting plate of the fixing sleeve are fixedly connected to a base, and the top of the base is rotatably connected to a rotating shaft.

[0010] Preferably, a mounting plate is fixedly connected to the top of the rotating shaft, and a pull rod is movably connected through the mounting plate.

[0011] Preferably, a fixing plate is fixedly connected to the top of the pull rod, and a pull ring is fixedly connected to the top of the fixing plate.

[0012] Preferably, a locking block is fixedly connected to the bottom of the pull rod, and a spring is provided between the locking block and the mounting plate.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of the sealing mechanism, not only provides a reliable sealing effect, ensuring that the valve prevents medium leakage when closed, effectively sealing and avoiding the problem of medium leakage, ensuring the normal operation of the system, and improving the safety and efficiency of the overall system, but also effectively isolates the fire source in the event of a fire, reducing the risk of fire spread and ensuring the safety of equipment and personnel. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a side view sectional diagram of the valve disc structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the sealing mechanism of this utility model;

[0019] Figure 4 For the present utility model Figure 1 A magnified three-dimensional structural diagram of A.

[0020] In the diagram: 1. Valve body; 2. Flange; 3. Connecting block; 4. Shaft seat; 5. Rotating rod; 6. Connecting rod; 7. Valve disc; 8. Sealing mechanism; 801. Fixing sleeve; 802. Connecting plate; 803. Fire-resistant sealing gasket; 804. Pull block; 805. Base; 806. Rotating shaft; 807. Mounting plate; 808. Pull rod; 809. Fixing disc; 810. Pull ring; 811. Locking block; 812. Spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses a combined fireproof check valve, referring to... Figure 1 and Figure 2 The valve body includes a valve body 1; flanges 2 are fixedly connected to both sides of the valve body 1; a connecting block 3 is fixedly connected to the top of the surface of the valve body 1; a rod seat 4 is fixedly connected to the back of the connecting block 3; a rotating rod 5 is rotatably connected to the front of the rod seat 4 inside the connecting block 3; a connecting rod 6 is fixedly connected to the bottom of the rotating rod 5; a valve disc 7 is fixedly connected to the bottom of the connecting rod 6; and a sealing mechanism 8 is fixedly connected to one side of the connecting block 3 on the outer wall of the valve disc 7. By rotating the rotating rod 5 on the rod seat 4, the valve disc 7 can be easily flipped. The sealing mechanism 8 can effectively isolate the fire source in the event of a fire, prevent flames or high-temperature gases from spreading through the valve disc 7, reduce the risk of fire spread, and ensure the safety of equipment and personnel.

[0024] Reference Figure 1 and Figure 3 The sealing mechanism 8 is provided with a fixing sleeve 801, and a connecting plate 802 is movably connected to the top of the fixing sleeve 801; the connecting plate 802 serves to connect with the fire-resistant sealing gasket 803, making it easy to disassemble the fire-resistant sealing gasket 803.

[0025] Reference Figure 3 A fire-resistant sealing gasket 803 is fixedly connected to the bottom of the connecting plate 802, and a pull block 804 is fixedly connected to the top of the connecting plate 802. The fire-resistant sealing gasket 803 can maintain the sealing of the valve disc 7, prevent the spread of fire, and reduce the damage caused by fire.

[0026] Reference Figure 3 and Figure 4 The front and back of the surface connecting plate 802 of the fixed sleeve 801 are fixedly connected to the base 805, and the top of the base 805 is rotatably connected to the rotating shaft 806; the rotation of the base 805 by the rotating shaft 806 facilitates the rotation of the mounting plate 807 around the rotating shaft 806.

[0027] Reference Figure 4A mounting plate 807 is fixedly connected to the top of the rotating shaft 806, and a pull rod 808 is movably connected through the mounting plate 807; by rotating the mounting plate 807, the pull rod 808 can be easily driven to rotate around the rotating shaft 806.

[0028] Reference Figure 4 A fixed plate 809 is fixedly connected to the top of the pull rod 808, and a pull ring 810 is fixedly connected to the top of the fixed plate 809. By pulling the pull ring 810, the fixed plate 809 is moved upward. The movement of the fixed plate 809 facilitates the upward movement of the pull rod 808, and the movement of the pull rod 808 facilitates the upward movement of the locking block 811.

[0029] Reference Figure 4 A locking block 811 is fixedly connected to the bottom of the pull rod 808, and a spring 812 is provided between the locking block 811 and the mounting plate 807; by using the spring 812, the locking block 811 is used to fix the connecting plate 802 by elasticity.

[0030] Working principle: The rotation of the rotating rod 5 on the rod seat 4 facilitates the flipping of the valve disc 7. The fire-resistant sealing gasket 803 on the outer wall of the valve disc 7 maintains the sealing of the valve disc 7, effectively isolating the fire source and reducing the risk of fire spread in the event of a fire. Pulling the pull ring 810 moves the fixed plate 809 upward, which in turn moves the pull rod 808 upward. The movement of the pull rod 808 in turn moves the locking block 811 upward. The rotation of the rotating shaft 806 on the base 805 causes the locking block 811 to rotate around the rotating shaft 806. Pulling the connecting plate 802 upward by the pull block 804 moves the fire-resistant sealing gasket 803 upward, causing the fire-resistant sealing gasket 803 to detach from the valve body 1. This makes the replacement and maintenance of the fire-resistant sealing gasket 803 easier, reduces equipment downtime, and improves work efficiency.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A combination fire rated check valve characterized by: Including the valve body (1), both sides of the valve body (1) are fixedly connected with flange plate (2), the top of the valve body (1) surface is fixedly connected with connecting block (3), the back of the connecting block (3) is fixedly connected with rod seat (4), the front of the connecting block (3) rod seat (4) is rotatably connected with rotary rod (5), the bottom of the rotary rod (5) is fixedly connected with connecting rod (6), the bottom of the connecting rod (6) is fixedly connected with valve clack (7), one side of the outer wall of the valve clack (7) connecting block (3) is fixedly connected with sealing mechanism (8).

2. The combination fire-rated check valve according to claim 1, wherein: The sealing mechanism (8) is provided with a fixed sleeve (801), and the top of the fixed sleeve (801) is movably connected with a connecting plate (802).

3. The combination fire-rated check valve according to claim 2, wherein: The bottom of the connecting plate (802) is fixedly connected with a fire-resistant sealing gasket (803), and the top of the connecting plate (802) is fixedly connected with a pull block (804).

4. The combination fire-rated check valve according to claim 3, wherein: The surface of the fixed sleeve (801) is fixedly connected with a base (805) on the front and back of the connecting plate (802), and the top of the base (805) is rotatably connected with a rotating shaft (806).

5. The combination fire-rated check valve according to claim 4, wherein: The top of the rotating shaft (806) is fixedly connected with a mounting plate (807), and the mounting plate (807) is movably connected with a pull rod (808).

6. The combination fire-rated check valve according to claim 5, wherein: The top of the pull rod (808) is fixedly connected with a fixed disc (809), and the top of the fixed disc (809) is fixedly connected with a pull ring (810).

7. The combination fire-rated check valve according to claim 5, wherein: The bottom of the pull rod (808) is fixedly connected with a locking block (811), and the locking block (811) is provided with a spring (812) between the mounting plate (807).

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