A baffle damper with a stable inclination angle

Abstract

The invention provides a baffle damper with a stable inclination angle, which relates to the technical field of dampers. The baffle damper with a stable inclination angle comprises a frame shell and a wind shield inside the frame shell, the side walls of the wind shield are connected to a driving shaft, the top of the frame shell is provided with a rotary handle, the rotary handle extends to the inside of the frame shell and is close to the driving shaft, and a bevel gear is connected between the driving shaft and the rotary handle. The wind shield is provided with four inner cylinders inside, the inner cylinders are provided with piston push blocks matched with the inner cylinders, and a push rod is connected to the side of the piston push block away from the center of the wind shield. The baffle damper with a stable inclination angle, the push rod is extended out of the wind shield to resist the frame shell under the action of a spring, which can improve the fixing effect of the wind shield angle and ensure the control of the air volume. By generating negative pressure at the end of the negative pressure cylinder, negative pressure is generated inside the inner cylinder, which can make the piston push block move toward the center side of the wind shield, thereby driving the push rod to retract to the inside of the wind shield, which is convenient for the flipping of the wind shield to control the air volume.

Description

Technical Field

[0001] The invention relates to the technical field of air doors, and in particular to a baffle air door with a stable inclination angle. Background Art

[0002] The adjustable damper is used to adjust the working fluid flow in the boiler smoke and air duct. When the blade rotates 90 degrees, different working fluid flows are passed through to control the pressure, temperature, quantity and other parameters of the working fluid in the system. The existing damper has a poor sealing and fixing effect and is easily skewed by the fluid, affecting the control of the fluid. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the present invention provides a baffle damper with a stable tilt angle, which solves the problem that the existing baffle has poor sealing and fixing effect and is easily skewed by the action of fluid, thus affecting the control of the fluid.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a baffle damper with a stable inclination angle, comprising a frame shell and a wind shield inside thereof, the side wall of the wind shield being connected to a driving shaft, a rotary handle being provided on the top of the frame shell, the rotary handle extending to the inside of the frame shell and close to the driving shaft, a bevel gear being connected between the driving shaft and the rotary handle, four inner cylinders being provided inside the wind shield, a piston push block being provided inside the inner cylinder matching therewith, a push rod being connected to the side of the piston push block away from the center of the wind shield, and an end of the push rod extending to the outside of the inner cylinder, a push groove matching the push rod being provided on the inner wall of the frame shell and close to the wind shield, a push block being fixed on the inner wall of the inner cylinder close to the center of the wind shield, a spring being connected between the push block and the piston push block, a negative pressure tube being connected to one end of the inner cylinder close to the center of the wind shield, the four negative pressure tubes being commonly connected to a cylinder, the cylinder being located at the center of the wind shield, the cylinder being connected to the inner cylinder through the negative pressure tube, an extension tube being connected to the side wall of the cylinder, the end of the extension tube passing through the driving shaft extending to the outside of the frame shell and being connected to the negative pressure cylinder.

[0007] Furthermore, a pull rope is provided inside the negative pressure cylinder, and the end of the pull rope passes through the extension tube, the negative pressure tube, the cylinder and the inner cylinder and is connected to the piston push block. Through the set pull rope, when the negative pressure sealing effect of the equipment is not good, or other factors affect the negative pressure, the pull rope can be pulled to drive the piston push block to move toward the center of the wind shield, and then the push rod can be retracted, ensuring that the wind shield is flipped to control the air volume, thereby improving the controllability and stability of the equipment.

[0008] Furthermore, a wear-resistant block is fixed to the end of the push rod, which can extend the service life of the push rod.

[0009] Furthermore, the outer diameter of the pull rope is smaller than the inner diameters of the extension tube and the negative pressure tube, so as to prevent the pull rope from affecting the negative pressure effect.

[0010] Furthermore, the end of the negative pressure cylinder can be connected to a negative pressure device, and a piston plate and a pull rod can be arranged inside it to produce a negative pressure effect. The pull rope can be adhered to the inside of the negative pressure cylinder when the negative pressure cylinder is working, and the two will not affect each other.

[0011] (III) Beneficial effects

[0012] The present invention provides a baffle damper with a stable tilt angle, which has the following beneficial effects:

[0013] 1. The damper with a stable inclination angle has a push rod that extends out of the windshield and contacts the frame shell under the action of a spring, which can improve the fixing effect of the windshield angle and ensure the control of the air volume. By generating negative pressure at the end of the negative pressure cylinder, negative pressure is generated inside the inner cylinder, which can move the piston push block toward the center side of the windshield, thereby driving the push rod to retract to the inside of the windshield, which is convenient for the windshield to flip over and control the air volume.

[0014] 2. The damper with a stable inclination angle is provided with a pull rope. When the negative pressure sealing effect of the equipment is not good or other factors affect the negative pressure, the pull rope can be pulled to drive the piston push block to move toward the center of the wind shield, thereby retracting the push rod, ensuring that the wind shield is flipped to control the air volume, thereby improving the controllability and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure when the wind shield of the present invention is connected to the driving shaft.

[0016] Figure 2 For the present invention Figure 1 A magnified schematic diagram of center A.

[0017] Figure 3 It is a structural schematic diagram of the present invention.

[0018] In the figure: 1. frame; 2. wind shield; 3. drive shaft; 4. handle; 5. inner cylinder; 6. piston push block; 7. push rod; 8. spring; 9. negative pressure tube; 10. cylinder; 11. extension tube; 12. negative pressure cylinder; 13. pull rope. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The embodiment of the present invention provides a baffle damper with a stable tilt angle, such as Figure 1-3 As shown, it includes a frame shell 1 and a windshield 2 inside it, the side wall of the windshield 2 is connected to a driving shaft 3, the top of the frame shell 1 is provided with a rotary handle 4, the rotary handle 4 extends to the inside of the frame shell 1 and is close to the driving shaft 3, a bevel gear is connected between the driving shaft 3 and the rotary handle 4, the end of the driving shaft 3 is connected to a motor device, and the damper can be driven to open and close by the motor, four inner cylinders 5 are provided inside the windshield 2, the inner cylinder 5 is provided with a piston push block 6 matched thereto, the piston push block 6 is connected to a side away from the center of the windshield 2 with a push rod 7, and the end of the push rod 7 extends to the outside of the inner cylinder 5, the inner wall of the frame shell 1 and near the windshield 2 is provided with a push groove matched with the push rod 7, the inner wall of the inner cylinder 5 near the center of the windshield 2 is fixed with a push block, and a spring is connected between the push block and the piston push block 6 8. One end of the inner cylinder 5 close to the center of the windshield 2 is connected with a negative pressure tube 9, and four negative pressure tubes 9 are commonly connected with a cylinder 10. The cylinder 10 is located at the center of the windshield 2, and the cylinder 10 is connected with the inner cylinder 5 through the negative pressure tube 9. The side wall of the cylinder 10 is connected with an extension tube 11. The end of the extension tube 11 passes through the drive shaft 3 and extends to the outside of the frame shell 1 and is connected with a negative pressure cylinder 12. The push rod 7 extends out of the windshield 2 and contacts the frame shell 1 under the action of the spring 8, which can improve the fixing effect of the angle of the windshield 2 and ensure the control of the air volume. By generating negative pressure at the end of the negative pressure cylinder 12, negative pressure is generated inside the inner cylinder 5, which can make the piston push block 6 move toward the center side of the windshield 2, thereby driving the push rod 7 to retract to the inside of the windshield 2, which is convenient for the flipping of the windshield 2 to control the air volume.

[0021] A pull rope 13 is provided inside the negative pressure cylinder 12, and the end of the pull rope 13 passes through the extension tube 11, the negative pressure tube 9, the cylinder 10 and the inner cylinder 5 and is connected to the piston push block 6. Through the set pull rope 13, when the negative pressure sealing effect of the equipment is not good, or other factors affect the negative pressure, the pull rope 13 can be pulled to drive the piston push block 6 to move toward the center of the wind shield 2, and then the push rod 7 is retracted, ensuring that the wind shield 2 is flipped to control the wind volume, thereby improving the controllability and stability of the equipment.

[0022] A wear-resistant block is fixed to the end of the push rod 7, which can extend the service life of the push rod 7.

[0023] The outer diameter of the pull rope 13 is smaller than the inner diameters of the extension tube 11 and the negative pressure tube 9 , so as to prevent the pull rope 13 from affecting the negative pressure effect.

[0024] The end of the negative pressure cylinder 12 can be connected to a negative pressure device, and a piston plate and a pull rod can be arranged inside it to produce a negative pressure effect. The pull rope 13 can be adhered to the inside of the negative pressure cylinder 12 when the negative pressure cylinder 12 is working, and the two will not affect each other.

[0025] Working principle: When in use, the push rod 7 extends out of the wind shield 2 under the action of the spring 8 to abut against the frame shell 1, which can improve the fixing effect of the angle of the wind shield 2 and ensure the control of the wind volume. By generating negative pressure at the end of the negative pressure cylinder 12, negative pressure is generated inside the inner cylinder 5, which can make the piston push block 6 move toward the center side of the wind shield 2, and then drive the push rod 7 to retract the inside of the wind shield 2, so as to facilitate the flipping of the wind shield 2 and control the wind volume. Through the set pull rope 13, when the negative pressure sealing effect of the equipment is not good, or other factors affect the negative pressure, the pull rope 13 can be pulled to drive the piston push block 6 to move toward the center of the wind shield 2, and then retract the push rod 7, ensuring that the flipping of the wind shield 2 controls the wind volume, thereby improving the controllability and stability of the equipment.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A baffle damper with a stable tilt angle, comprising a frame shell (1) and a windshield (2) therein, the side wall of the windshield (2) being connected to a drive shaft (3), a rotary handle (4) being provided at the top of the frame shell (1), the rotary handle (4) extending to the inside of the frame shell (1) and close to the drive shaft (3), a bevel gear being connected between the drive shaft (3) and the rotary handle (4), characterized in that: The windshield (2) is provided with four inner cylinders (5), and a piston push block (6) matched therewith is provided inside the inner cylinder (5). A side of the piston push block (6) away from the center of the windshield (2) is connected to a push rod (7), and the end of the push rod (7) extends to the outside of the inner cylinder (5). A push groove matched with the push rod (7) is provided on the inner wall of the frame shell (1) near the windshield (2). A push block is fixed on the inner wall of the inner cylinder (5) near the center of the windshield (2), and the push block and the piston push block (6) are connected to each other. A spring (8) is connected between the inner cylinder (5), one end of the inner cylinder (5) close to the center of the wind shield (2) is connected to a negative pressure tube (9), the four negative pressure tubes (9) are commonly connected to a cylinder (10), the cylinder (10) is located at the center of the wind shield (2), the cylinder (10) is connected to the inner cylinder (5) through the negative pressure tube (9), the side wall of the cylinder (10) is connected to an extension tube (11), the end of the extension tube (11) passes through the drive shaft (3) and extends to the outside of the frame shell (1) and is connected to a negative pressure cylinder (12).

2. The baffle damper with a stable inclination angle according to claim 1, characterized in that: A pull rope (13) is provided inside the negative pressure cylinder (12), and the end of the pull rope (13) passes through the extension tube (11), the negative pressure tube (9), the cylinder (10) and the inner cylinder (5) and is connected to the piston push block (6).

3. The baffle damper with a stable inclination angle according to claim 1, characterized in that: A wear-resistant block is fixed to the end of the stop rod (7).

4. The baffle damper with a stable inclination angle according to claim 2, characterized in that: The outer diameter of the pull rope (13) is smaller than the inner diameters of the extension tube (11) and the negative pressure tube (9).

5. The baffle damper with a stable inclination angle according to claim 1, characterized in that: The end of the negative pressure cylinder (12) can be connected to a negative pressure device, and a piston plate and a pull rod can also be arranged inside the negative pressure cylinder to produce a negative pressure effect.

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