Smoke-proof and fire-proof valve with high air tightness

Abstract

The utility model relates to a smoke-proof fireproof valve with high air tightness, which aims to solve the technical problem that the air tightness is easy to reduce in the long-term working process of the current fireproof valve, and comprises a frame assembly in which a plurality of groups of valve plate assemblies are movably mounted at equal intervals, and the valve plate assemblies comprise rotating shafts which are rotatably arranged in the frame assembly; a first valve plate and a second valve plate are detachably installed on the two sides of the rotating shaft respectively, a sealing plate is arranged at one end of the first valve plate, a bearing plate is arranged at the other end of the first valve plate, and a reinforcing plate which abuts against the sealing plate and is used for reinforcing the sealing plate is arranged at one end of the second valve plate. Arc-shaped sealing protrusions are formed on the side, away from the reinforcing plate, of the sealing plate at equal intervals, groove parts are formed between the arc-shaped sealing protrusions, sealing grooves used for allowing the arc-shaped sealing protrusions to abut against in a sealing mode are formed in one side of the bearing plate at equal intervals, and a stepped sealing structure is jointly formed between the arc-shaped sealing protrusions and the groove parts. The fireproof valve has the advantage that the airtightness of the fireproof valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire dampers, in particular to a smoke and fire damper with high air tightness. Background Art

[0002] The fire damper is a temperature control device made of a memory alloy. It is usually installed at the place where the air duct passes through the fire wall and the structural deformation joint. The fire damper consists of a valve body, a blade, a fire damper actuator, and a 70°C cone block temperature sensor. [3] It is usually in the open state. In the event of a fire, when the gas temperature in the pipe reaches 70°C, it will automatically close. It can meet the requirements of fire resistance stability and fire resistance integrity within a certain period of time, and play the role of fire and smoke isolation.

[0003] At present, fire dampers are usually installed inside the air supply ducts of large buildings, such as shopping malls, to automatically close when a fire occurs outdoors to prevent outdoor high-temperature smoke from carrying flames into the shopping mall through the air supply ducts. In addition, the air supply ducts between floors of some shopping malls are interconnected. In order to prevent the high-temperature smoke between floors from carrying flames and aggravating the fire accident after a fire occurs, fire dampers are also installed in the air supply ducts. However, the sealing between valves of traditional fire dampers mainly depends on the mutual fit between valves. During the operation of the air supply duct, outdoor air will carry dust and other impurities through the fire damper. Under long-term action, the valve of the fire damper is easily deformed, which in turn leads to a decrease in the air tightness of the fire damper, affecting the safety of use. In view of this, we propose a high-air-tight smoke and fire damper. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, meet practical needs, and provide a smoke and fire damper with high air tightness to solve the technical problem that the current fire damper is prone to reduce air tightness during long-term operation.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a high-airtight smoke and fire damper, including a frame assembly with multiple groups of valve plate assemblies equidistantly and movably installed inside;

[0006] The valve plate assembly includes a rotating shaft rotatably arranged in a frame assembly, and valve plate 1 and valve plate 2 are detachably mounted on both sides of the rotating shaft, one end of the valve plate 1 is structured to be provided with a sealing plate, and the other end of the valve plate 1 is structured to be provided with a receiving plate, and one end of the valve plate 2 is structured to be provided with a reinforcing plate abutting against the sealing plate for reinforcing the sealing plate, and arc-shaped sealing protrusions are equidistantly formed on one side of the sealing plate away from the reinforcing plate, groove portions are formed between the arc-shaped sealing protrusions, and sealing grooves for the arc-shaped sealing protrusions to seal and abut against are equidistantly formed on one side of the receiving plate, and a stepped sealing structure is formed between the arc-shaped sealing protrusions and the groove portions, and the surface of the arc-shaped sealing protrusion is an arc-shaped structure.

[0007] Preferably, a convex structure that can be sealably abutted against the groove portion is formed between the sealing grooves of the receiving plate, and the inner wall of the groove portion and the surface of the convex structure are both arc-shaped structures.

[0008] Preferably, the frame assembly includes a U-shaped frame plate 1 arranged symmetrically in the longitudinal direction and a U-shaped frame plate 2 arranged symmetrically in the transverse direction. The U-shaped frame plate 1 and the U-shaped frame plate 2 are welded and fixed, and mounting holes are equidistantly provided in the U-shaped frame plate 1.

[0009] Preferably, a control box is fixedly installed in the center of the upper end surface of the U-shaped frame plate 1 located at the top, and a movable plate is movably provided on one side of the upper end surface of the U-shaped frame plate 1, and connecting shafts are equidistantly arranged on the upper end surface of the movable plate.

[0010] Preferably, a linkage plate is rotatably provided on the outer edge surface of the connecting shaft, an axial hole is provided inside the end of the linkage plate away from the connecting shaft, and an L-shaped docking plate is structured on one side of the second U-shaped frame plate.

[0011] Preferably, the top and bottom ends of the rotating shaft can be rotatably mounted in the mounting hole, and the top end of the rotating shaft extends through the mounting hole and can be fixedly disposed in the shaft hole, and the side of the valve plate assembly movably abuts against the L-shaped docking plate for sealing.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By providing a valve plate, a sealing plate and an arc-shaped sealing protrusion, when the valve plate components are closed for sealing, the stepped sealing structure formed by the arc-shaped sealing protrusion and the groove portion is beneficial to improving the fireproof sealing effect. Compared with the traditional plane abutment sealing structure, it has multiple sealing surfaces, thereby achieving multiple sealing effects, improving the airtightness of the valve plate assembly in the closed state. Due to the multiple sealing surfaces, a relatively stable sealing effect can be achieved through the multiple sealing surfaces when deformation occurs under long-term action.

[0014] 2. By designing the surface of the arc-shaped sealing protrusion into an arc-shaped structure, it is helpful to improve the smoke barrier effect compared with the flat stepped sealing structure, that is, the smoke is not easy to cross the arc surface structure compared with the flat structure. At the same time, the arc-shaped structure of the arc-shaped sealing protrusion is conducive to improving the fitting effect. The improvement of the fitting effect helps to directly improve the sealing effect. At the same time, it helps to improve the impact strength of the sealing plate and the arc-shaped sealing protrusion when closed, thereby ensuring stability in long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the framework assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the valve plate assembly of the utility model in a sealed matching state;

[0018] Figure 4 This is a schematic diagram of the disassembly of the valve plate assembly of the utility model;

[0019] Figure 5 For this utility model Figure 3 A magnified schematic diagram of the structure in the middle.

[0020] In the figure: 1. frame assembly; 101. U-shaped frame plate 1; 102. mounting hole; 103. U-shaped frame plate 2; 104. L-shaped docking plate; 105. control box; 106. movable plate; 107. connecting shaft; 108. linkage plate; 109. shaft hole; 2. valve plate assembly; 201. rotating shaft; 202. valve plate 1; 203. sealing plate; 204. receiving plate; 205. valve plate 2; 206. reinforcement plate; 207. arc-shaped sealing protrusion. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0022] Example 1: A highly airtight smoke and fire damper, see Figure 1 , Figure 3 , Figure 4 and Figure 5 , including a frame assembly 1 with multiple groups of valve plate assemblies 2 equidistantly installed inside, the valve plate assembly 2 includes a rotating shaft 201 rotatably arranged in the frame assembly 1, and valve plates 1 202 and 205 are detachably installed on both sides of the rotating shaft 201, one end of the valve plate 1 202 is structured with a sealing plate 203, and the other end of the valve plate 1 202 is structured with a receiving plate 204, one end of the valve plate 205 is structured with a reinforcing plate 206 abutting against the sealing plate 203 for reinforcing it, an arc-shaped sealing protrusion 207 is equidistantly formed on one side of the sealing plate 203 away from the reinforcing plate 206, and grooves are formed between the arc-shaped sealing protrusions 207, and sealing grooves for sealing and abutting the arc-shaped sealing protrusions 207 are equidistantly opened on one side of the receiving plate 204, the arc-shaped sealing protrusion 207 and the groove together form a stepped sealing structure, and the surface of the arc-shaped sealing protrusion 207 is an arc-shaped structure.

[0023] See also Figure 5 A convex structure that can seal and abut against the groove portion is formed between the sealing grooves of the receiving plate 204, and the inner wall of the groove portion and the surface of the convex structure are both arc-shaped structures.

[0024] See also Figure 1-Figure 3The frame assembly 1 includes a U-shaped frame plate 101 arranged symmetrically in the longitudinal direction and a U-shaped frame plate 2 103 arranged symmetrically in the transverse direction. The U-shaped frame plate 101 and the U-shaped frame plate 2 103 are welded and fixed, and mounting holes 102 are evenly spaced in the U-shaped frame plate 101. A control box 105 is fixedly mounted in the center of the upper end surface of the U-shaped frame plate 101 located at the top, and a movable plate 106 is movably arranged on one side of the upper end surface of the U-shaped frame plate 101. The upper end surface of the movable plate 106 is evenly spaced and provided with a connecting shaft 10 7. A linkage plate 108 is rotatably provided on the outer edge of the connecting shaft 107, and an axial hole 109 is provided inside the end of the linkage plate 108 away from the connecting shaft 107. An L-shaped docking plate 104 is provided on one side of the U-shaped frame plate 103. The top and bottom ends of the rotating shaft 201 can be rotatably installed in the installation hole 102, and the top end of the rotating shaft 201 extends through the installation hole 102 and can be fixedly installed in the axial hole 109. The side of the valve plate assembly 2 is movably abutted against the L-shaped docking plate 104 for sealing. The utility model solves the technical problem that the current fire damper is prone to reduce air tightness during long-term operation by providing an arc-shaped sealing protrusion 207.

[0025] Working principle: When in use, the control box 105 controls the movable plate 106 to move, and the movement of the movable plate 106 drives the connecting shaft 107 to move, thereby pushing the linkage plate 108 to drive the rotating shaft 201 to deflect, so that the valve plate assembly 2 deflects as a whole to open or close the fire damper. When the valve plate assembly 2 is closed for sealing, the stepped sealing structure formed by the arc-shaped sealing protrusion 207 and the groove portion is conducive to improving the fireproof sealing effect. Compared with the traditional plane abutment sealing structure, it has multiple sealing surfaces, thereby realizing multiple The heavy sealing effect improves the air tightness of the valve plate assembly 2 in the closed state. Since it has multiple sealing surfaces, it can achieve a relatively stable sealing effect through multiple sealing surfaces when deformation occurs under long-term action. By designing the surface of the arc-shaped sealing protrusion 207 to be an arc-shaped structure, it is beneficial to improve the smoke blocking effect compared to the flat stepped sealing structure, that is, the smoke is less likely to cross the arc surface structure than the flat structure. At the same time, the arc-shaped structure of the arc-shaped sealing protrusion 207 is beneficial to improving the fitting effect, and the improvement of the fitting effect helps to directly improve the sealing effect.

[0026] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A highly airtight smoke and fire damper. It is characterized in that It comprises a frame assembly (1) having a plurality of valve plate assemblies (2) movably mounted therein at equal intervals; The valve plate assembly (2) comprises a rotating shaft (201) rotatably arranged in the frame assembly (1), and valve plate 1 (202) and valve plate 2 (205) are detachably mounted on both sides of the rotating shaft (201), one end of the valve plate 1 (202) is provided with a sealing plate (203), and the other end of the valve plate 1 (202) is provided with a receiving plate (204), and one end of the valve plate 2 (205) is provided with a sealing plate that abuts against the sealing plate (203) for reinforcing the sealing plate. The reinforcing plate (206) of the resultant is provided, and arc-shaped sealing protrusions (207) are formed equidistantly on one side of the sealing plate (203) away from the reinforcing plate (206), and groove portions are formed between the arc-shaped sealing protrusions (207), and sealing grooves for the arc-shaped sealing protrusions (207) to seal and abut are formed equidistantly on one side of the receiving plate (204), and a stepped sealing structure is formed between the arc-shaped sealing protrusions (207) and the groove portions, and the surface of the arc-shaped sealing protrusions (207) is an arc-shaped structure.

2. A highly airtight smoke and fire damper as claimed in claim 1, It is characterized in that A convex structure that can be sealed and abutted against the groove portion is formed between the sealing grooves of the receiving plate (204), and the inner wall of the groove portion and the surface of the convex structure are both arc-shaped structures.

3. A highly airtight smoke and fire damper as claimed in claim 1, It is characterized in that The frame assembly (1) comprises a U-shaped frame plate 1 (101) arranged symmetrically in the longitudinal direction and a U-shaped frame plate 2 (103) arranged symmetrically in the transverse direction. The U-shaped frame plate 1 (101) and the U-shaped frame plate 2 (103) are welded and fixed, and mounting holes (102) are equidistantly provided in the U-shaped frame plate 1 (101).

4. A highly airtight smoke and fire damper as claimed in claim 3, It is characterized in that A control box (105) is fixedly mounted in the center of the upper end surface of the U-shaped frame plate (101) at the top, and a movable plate (106) is movably arranged on one side of the upper end surface of the U-shaped frame plate (101), and a connecting shaft (107) is equidistantly arranged on the upper end surface of the movable plate (106).

5. A highly airtight smoke and fire damper as claimed in claim 4, It is characterized in that A linkage plate (108) is rotatably arranged on the outer edge surface of the connecting shaft (107), and an axial hole (109) is provided inside one end of the linkage plate (108) away from the connecting shaft (107). An L-shaped docking plate (104) is arranged on one side of the second U-shaped frame plate (103).

6. A highly airtight smoke and fire damper as claimed in claim 5, It is characterized in that The top and bottom ends of the rotating shaft (201) can be rotatably mounted in the mounting hole (102), and the top end of the rotating shaft (201) extends out of the mounting hole (102) and can be fixedly disposed in the shaft hole (109), and the side of the valve plate assembly (2) is movably abutted against the L-shaped docking plate (104) for sealing.

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