Smoke exhaust check valve

Abstract

The utility model relates to the technical field of check valves, and provides a smoke exhaust check valve which comprises a valve body and first flanges fixedly installed at the two ends of the valve body, second flanges are installed on the opposite sides of the first flanges in an attached mode, and clamping assemblies are installed on the two sides of the opposite sides of the first flanges. Connecting pipes are fixedly installed on the opposite sides of the second flanges, a rectangular plate is fixedly installed on one side of an inner cavity of the valve body, when the smoke exhaust check valve is used, connection between the valve body and the connecting pipes can be achieved through the arrangement of the clamping assemblies, installation work can be conveniently carried out, operation is convenient and fast, in addition, a moving rod can be driven to abut against a baffle in the case of fire, and the smoke exhaust check valve is convenient to use. The valve is in a normally-closed state, fire spreading is prevented, and the using effect is improved.

Description

Technical Field

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

[0002] The fireproof check valve is an integral metal component, preferably made of metal. It has the functions of fire prevention, smoke backflow prevention and upward air guidance. Since it is made of all stainless steel, the product is beautiful and durable.

[0003] Existing smoke exhaust check valves need to be connected to external pipes when in use, usually with the help of external tools and several bolts, which can easily lead to the loss of bolts. In addition, when a fire occurs in the check valve, due to the complexity of some valve bodies, it is easy for the valve body to fail to be locked, causing the fire to spread.

[0004] In view of this, the utility model proposes a smoke exhaust check valve. Utility Model Content

[0005] The utility model provides a smoke exhaust check valve and solves related technical problems.

[0006] The technical scheme of the utility model is as follows: a smoke exhaust check valve comprises a valve body and a first flange fixedly installed at both ends of the valve body, a second flange is fittedly installed on the opposite side of the first flange, and a clamping assembly is installed on both sides of the opposite side of the first flange, a connecting pipe is fixedly installed on the opposite side of the second flange, a rectangular plate is fixedly installed on one side of the inner cavity of the valve body, a smoke exhaust port is provided on the rectangular plate, a baffle is fittedly installed on one side of the smoke exhaust port, and connecting plates are provided on both sides of the other side of the baffle, the rear sides of the connecting plates are fixedly installed on the side walls of the inner cavity of the valve body, extrusion rods are slidably installed on the connecting plates, one end of the extrusion rods is fixedly installed on the outer wall of the outer side of the baffle, and a resisting assembly is installed on the other side of the baffle.

[0007] Preferably, a first spring is movably sleeved on the outer side of the extrusion rod, and two ends of the first spring are respectively fixedly mounted on the baffle plate and the connecting plate.

[0008] Preferably, the resisting assembly includes a vertical rod fixedly mounted on the other side of the inner cavity of the valve body and a sliding rod slidably mounted at the upper and lower ends of the outer side of the vertical rod. The outer movable sleeve of the vertical rod is provided with a second spring, and the two ends of the second spring are respectively fixedly mounted on the outer side of the sliding rod. A trapezoidal block is fixedly mounted on one side of the sliding rod, and a circular plate is fittedly mounted on one side of the trapezoidal block.

[0009] Preferably, a moving rod is fixedly installed on the other side of the circular plate, fixed plates are slidably installed at both ends of the outer side of the moving rod, and the rear side of the fixed plate is fixedly installed on the inner cavity side wall of the valve body, and a third spring is movably sleeved on the outer side of the moving rod, and both ends of the third spring are respectively fixedly installed on the fixed plate.

[0010] Preferably, a fuse is fixedly mounted on one side of the opposite side of the sliding rod, and the other end of the fuse is fixedly mounted on the side wall of the inner cavity of the valve body.

[0011] Preferably, the clamping assembly includes a clamping plate fixedly installed above one side of the first flange, the other side of the clamping plate slides through and extends to the outside of the second flange, a straight plate is fixedly installed above one side of the second flange, a threaded sleeve is fixedly installed on the straight plate, a threaded rod is threadedly installed on the threaded sleeve, and a knob is fixedly installed on the upper end of the threaded rod, a sliding block is rotatably installed on the lower end of the threaded rod, and the sliding block is slidably installed on the outer wall of the outer side of the second flange.

[0012] Preferably, a plug rod is fixedly mounted on the bottom of the sliding block, and an output shaft of the plug rod is plugged into the outer wall of the outer side of the clamping plate through a slot, and the slot is provided at one side of the top of the clamping plate.

[0013] The working principle and beneficial effects of the utility model are as follows: when the smoke exhaust check valve is in use, the connection between the valve body and the connecting pipe can be achieved through the setting of the clamping assembly, which is convenient for installation and easy to operate. In addition, when a fire occurs, the moving rod can be driven to resist the baffle, so that the valve is in a normally closed state, preventing the fire from spreading and improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a front cross-sectional view of the utility model;

[0016] Figure 2 It is a partial front view of the utility model;

[0017] Figure 3 For the utility model Figure 1 Enlarged view of point A in the middle;

[0018] Figure 4 For the utility model Figure 1 Enlarged view of point B in the middle.

[0019] In the figure: 1. valve body; 2. first flange; 3. second flange; 4. connecting pipe; 5. clamping plate; 6. plug rod; 7. threaded rod; 8. threaded sleeve; 9. knob; 10. sliding block; 11. rectangular plate; 12. baffle; 13. first spring; 14. connecting plate; 15. extrusion rod; 16. second spring; 17. sliding rod; 18. vertical rod; 19. fuse; 20. trapezoidal block; 21. round plate; 22. fixed plate; 23. third spring; 24. moving rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0022] The utility model embodiment provides a smoke exhaust check valve, such as Figure 1-4 As shown, it includes a valve body 1 and a first flange 2 fixedly installed at both ends of the valve body 1, a second flange 3 is fittedly installed on the opposite side of the first flange 2, and a clamping assembly is installed on both sides of the opposite side of the first flange 2, a connecting pipe 4 is fixedly installed on the opposite side of the second flange 3, a rectangular plate 11 is fixedly installed on one side of the inner cavity of the valve body 1, a smoke exhaust port is opened on the rectangular plate 11, a baffle 12 is fittedly installed on one side of the smoke exhaust port, and connecting plates 14 are provided on both sides of the other side of the baffle 12, the rear sides of the connecting plates 14 are fixedly installed on the side wall of the inner cavity of the valve body 1, an extrusion rod 15 is slidably installed on the connecting plate 14, one end of the extrusion rod 15 is fixedly installed on the outer wall of the outer side of the baffle 12, and a resisting assembly is installed on the other side of the baffle 12.

[0023] It should be noted that when the valve body 1 is used, when gas enters the air inlet end of the valve body 1, the airflow at the air inlet end pushes the baffle 12 to move to the right. When the baffle 12 moves to the right, it will drive the extrusion rod 15 to move to the right, thereby forming a channel for the airflow to pass through, thereby facilitating the discharge of smoke.

[0024] In the embodiment of the utility model, the first spring 13 is movably sleeved on the outer side of the extrusion rod 15 , and the two ends of the first spring 13 are fixedly mounted on the baffle plate 12 and the connecting plate 14 respectively.

[0025] It should be noted that the first spring 13 can be provided to restore the squeezing rod 15 , so that the baffle 12 can be restored under the action of the rebound force of the first spring 13 when there is no smoke squeezing.

[0026] In an embodiment of the utility model, the resisting assembly includes a vertical rod 18 fixedly mounted on the other side of the inner cavity of the valve body 1 and a sliding rod 17 slidably mounted at the upper and lower ends of the outer side of the vertical rod 18. A second spring 16 is provided on the outer movable sleeve of the vertical rod 18, and the two ends of the second spring 16 are respectively fixedly mounted on the outer side of the sliding rod 17. A trapezoidal block 20 is fixedly mounted on one side of the sliding rod 17, and a circular plate 21 is fittedly mounted on one side of the trapezoidal block 20.

[0027] It should be noted that when a fire occurs, the fire enters the valve body 1 through the air outlet end of the valve body 1. In addition, the two sliding rods 17 will recover under the action of the rebound force of the second spring 16, thereby driving the adjacent trapezoidal blocks 20 to move relative to each other. When the trapezoidal blocks 20 move relative to each other, they will squeeze the adjacent circular plate 21 to move to the left.

[0028] In the embodiment of the utility model, a moving rod 24 is fixedly installed on the other side of the circular plate 21, and fixed plates 22 are slidably installed at both ends of the outer side of the moving rod 24, and the rear side of the fixed plate 22 is fixedly installed on the inner cavity side wall of the valve body 1, and a third spring 23 is movably sleeved on the outer side of the moving rod 24, and both ends of the third spring 23 are respectively fixedly installed on the fixed plate 22.

[0029] It should be noted that when the circular plate 21 moves to the left, it will drive the moving rod 24 to move to the left to resist the baffle 12, and at the same time squeeze the third spring 23 to keep the valve body 1 in a closed state to prevent the spread of fire.

[0030] In the embodiment of the utility model, a fuse 19 is fixedly mounted on one side of the opposite side of the sliding rod 17 , and the other end of the fuse 19 is fixedly mounted on the side wall of the inner cavity of the valve body 1 .

[0031] It should be noted that the fuse 19 will melt under high temperature conditions, thereby releasing the pulling force on the sliding rod 17 and achieving relative movement of the two sliding rods 17 .

[0032] In an embodiment of the utility model, the clamping assembly includes a clamping plate 5 fixedly installed on the upper side of one side of the first flange 2, and the other side of the clamping plate 5 slides through and extends to the outer side of the second flange 3. A straight plate is fixedly installed on the upper side of one side of the second flange 3, and a threaded sleeve 8 is fixedly installed on the straight plate. A threaded rod 7 is threadedly installed on the threaded sleeve 8, and a knob 9 is fixedly installed on the upper end of the threaded rod 7, and a sliding block 10 is rotatably installed on the lower end of the threaded rod 7, and the sliding block 10 is slidably installed on the outer wall of the outer side of the second flange 3.

[0033] It should be noted that before using the valve body 1, it is installed with the connecting pipe 4 so that the second flange 3 on the connecting pipe 4 is fitted with the first flange 2, thereby extending the clamping plate 5 to the outside of the second flange 3. After the fitting is completed, the knob 9 can be turned. When the knob 9 is turned, the threaded rod 7 will be driven to rotate. When the threaded rod 7 is rotated, the sliding block 10 will move downward due to the threaded sleeve 8.

[0034] In the embodiment of the utility model, a plug rod 6 is fixedly installed at the bottom of the sliding block 10, and the output shaft of the plug rod 6 is inserted into the outer wall of the clamping plate 5 through a slot, and the slot is opened on one side of the top of the clamping plate 5.

[0035] It should be noted that when the sliding block 10 moves downward, it will drive the insertion rod 6 to move downward, and when the insertion rod 6 moves downward, it will be inserted into the inner cavity of the slot, thereby achieving the clamping and fixing of the first flange 2 and the second flange 3.

[0036] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A smoke exhaust check valve, comprising a valve body (1) and a first flange (2) fixedly mounted at both ends of the valve body (1), characterized in that: A second flange (3) is fitted and installed on the opposite side of the first flange (2), and a clamping assembly is installed on both sides of the opposite side of the first flange (2). A connecting pipe (4) is fixedly installed on the opposite side of the second flange (3). A rectangular plate (11) is fixedly installed on one side of the inner cavity of the valve body (1), and a smoke exhaust port is provided on the rectangular plate (11). A baffle (12) is fitted and installed on one side of the smoke exhaust port, and connecting plates (14) are provided on both sides of the other side of the baffle (12). The rear side of the connecting plate (14) is fixedly installed on the side wall of the inner cavity of the valve body (1). An extrusion rod (15) is slidably installed on the connecting plate (14), and one end of the extrusion rod (15) is fixedly installed on the outer wall of the outer side of the baffle (12), and a resisting assembly is installed on the other side of the baffle (12).

2. The smoke exhaust check valve according to claim 1, characterized in that: The outer sides of the extrusion rods (15) are movably sleeved with first springs (13), and the two ends of the first springs (13) are respectively fixedly mounted on the baffle plate (12) and the connecting plate (14).

3. The smoke exhaust check valve according to claim 1, characterized in that: The abutting assembly comprises a vertical rod (18) fixedly mounted on the other side of the inner cavity of the valve body (1) and a sliding rod (17) slidably mounted on the upper and lower ends of the outer side of the vertical rod (18); a second spring (16) is provided on the outer movable sleeve of the vertical rod (18), and the two ends of the second spring (16) are respectively fixedly mounted on the outer side of the sliding rod (17); a trapezoidal block (20) is fixedly mounted on one side of the sliding rod (17), and a circular plate (21) is fittedly mounted on one side of the trapezoidal block (20).

4. The smoke exhaust check valve according to claim 3, characterized in that: A moving rod (24) is fixedly mounted on the other side of the circular plate (21), and fixed plates (22) are slidably mounted on both ends of the outer side of the moving rod (24), and the rear side of the fixed plate (22) is fixedly mounted on the inner cavity side wall of the valve body (1), and a third spring (23) is movably sleeved on the outer side of the moving rod (24), and both ends of the third spring (23) are respectively fixedly mounted on the fixed plate (22).

5. The smoke exhaust check valve according to claim 3, characterized in that: A fuse (19) is fixedly mounted on one side of the opposite side of the sliding rod (17), and the other end of the fuse (19) is fixedly mounted on the side wall of the inner cavity of the valve body (1).

6. The smoke exhaust check valve according to claim 1, characterized in that: The clamping assembly comprises a clamping plate (5) fixedly mounted on the upper part of one side of the first flange (2); the other side of the clamping plate (5) slides through and extends to the outer side of the second flange (3); a straight plate is fixedly mounted on the upper part of one side of the second flange (3); a threaded sleeve (8) is fixedly mounted on the straight plate; a threaded rod (7) is threadedly mounted on the threaded sleeve (8); a knob (9) is fixedly mounted on the upper end of the threaded rod (7); a sliding block (10) is rotatably mounted on the lower end of the threaded rod (7); and the sliding block (10) is slidably mounted on the outer wall of the outer side of the second flange (3).

7. The smoke exhaust check valve according to claim 6, characterized in that: The bottom of the sliding block (10) is fixedly mounted with an insertion rod (6), and the output shaft of the insertion rod (6) is inserted into the outer wall of the clamping plate (5) through a slot, and the slot is provided at one side of the top of the clamping plate (5).

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