Light flue flashboard convenient to install and long in service life

Abstract

The invention relates to the field of flashboards, in particular to a light flue flashboard convenient to install and long in service life. The light flue damper convenient to install and long in service life comprises a fixing frame, a connecting frame, sliding blocks, a control switch mechanism and the like, the control switch mechanism is arranged on the fixing frame, the connecting frame is connected to the control switch mechanism, and the sliding blocks are arranged on the left portion and the right portion of the inner side wall of the connecting frame in a front-back symmetrical sliding mode. By rotating the screw rod, the flashboard body can be loosened and clamped by the clamping block, the purpose of rapidly disassembling and replacing the flashboard body can be achieved, under the action of the sliding block, when the flashboard body moves downwards to the position of a flue, the flashboard body can automatically move outwards, effective closing of the flue is achieved, and the practicability is high. Friction caused by direct contact between the flashboard body and the flue is avoided, friction loss is reduced, and therefore the service life of the flashboard body can be prolonged.

Description

Technical Field

[0001] The invention relates to the field of dampers, and in particular to a lightweight flue damper which is easy to install and has a long service life. Background Art

[0002] The flue damper is a device used to control the flow of gas in the flue. It is commonly used in industrial production, especially in thermal power plants, cement plants, metallurgical industries and boiler systems. The design of the flue damper usually takes into account high temperature resistance, corrosion resistance and wear resistance to ensure long-term stable operation in harsh environments. The switch can be controlled manually or automatically by electric or pneumatic actuators.

[0003] The existing flue damper is usually installed on the bracket by screws or other fasteners. The specific installation process is as follows: first, place the damper on the bracket to ensure that it is correctly aligned. Secondly, use a wrench with screws or other fasteners to fix the damper on the bracket to complete the installation of the flue damper. However, this installation method requires the use of a large number of screws, which not only consumes a large number of screws and the installation process is cumbersome, but also is not convenient for quick and timely disassembly and maintenance of the flue damper. In addition, the two sides of the existing flue damper are generally in direct contact with the pipeline to block the opening of the pipeline. Therefore, when the flue damper moves up and down to open and close, the flue damper will rub against the pipeline, which is easy to cause wear on the surface of the flue damper, thereby shortening the service life of the flue damper.

[0004] In summary, there is an urgent need for a lightweight flue damper that is easy to install and has a long service life to solve the above problems. Summary of the invention

[0005] In order to overcome the shortcomings of the existing flue damper that it is very troublesome to install with a large number of screws and is easily worn when it is in direct contact with the pipe to move up and down to switch, thereby shortening the service life of the flue damper, the purpose of the present invention is to provide a lightweight flue damper that is easy to install and has a long service life.

[0006] The technical solution of the present invention is:

[0007] A lightweight flue damper that is easy to install and has a long service life comprises a fixed frame, a connecting frame, a sliding block, a first spring, a damper body, a control switch mechanism, a screw rod, a clamping block, a second spring and a sliding frame. The fixed frame is provided with a control switch mechanism, and the connecting frame is connected to the control switch mechanism. The left and right parts of the inner side wall of the connecting frame are both symmetrically and slidably provided with sliding blocks front and back, and three first springs are symmetrically connected to the sliding block and the connecting frame up and down. The outer sides of the four sliding blocks are symmetrically and screw rods are symmetrically and screw rods are threadedly provided up and down. Blocks are symmetrically and slidably provided on the sides of the four sliding blocks that are close to each other, and the screw rods resist against adjacent blocks. The four blocks on the same side are arranged on an inclined surface on one side close to the screw rod. Two second springs are connected between the eight clamping blocks and the adjacent sliding blocks. The damper body is slidably clamped between the four blocks on the same side. The sliding frame is slidably provided in the middle of the connecting frame. The sliding frame is located between the two damper bodies, and the front and rear sides of the lower part of the sliding frame are arranged with inclined surfaces, and the damper body and the sliding block are in contact with the inclined surface of the lower part of the sliding frame.

[0008] Furthermore, the control switch mechanism includes a motor, a first sleeve shaft, a winding wheel, a pulley, a flat belt, a pull rope, a pull block and a protective cover. The motor is installed on the top of the fixed frame, and the first sleeve shaft is slidably arranged on the output shaft of the motor. The winding wheel is symmetrically rotatably arranged on the upper part of the fixed frame, the winding wheel on the left is slidably connected to the first sleeve shaft, the winding wheels are arranged in left and right arrangements, the winding wheel is connected to the pulley, a flat belt is wound between the two pulleys, a pull rope is wound around the winding wheel, the lower end of the pull rope passes through the upper part of the connecting frame, the lower end of the pull rope is connected to the pull block, the pull block is slidably connected to the connecting frame, a protective cover is symmetrically connected between the top of the connecting frame and the fixed frame, and the pull rope is located inside the protective cover.

[0009] Furthermore, it also includes a sealing mechanism, which includes a sealing ring, a push rod and a third spring. A sealing ring is slidably arranged in the middle of the gate body, a push rod is slidably arranged on the front side of the sliding frame, and a push rod is also slidably arranged on the rear side of the sliding frame. The two push rods on the same side are arranged in an upper and lower arrangement, and the sealing rings are respectively located on the front and rear sides of the sliding frame. A third spring is connected between the rear side of the front push rod and the sliding frame, and a third spring is also connected between the front side of the rear push rod and the sliding frame.

[0010] Furthermore, a reset mechanism is also included, which includes an extrusion frame, an extrusion block and a fourth spring. Extrusion frames are slidably arranged on the upper parts of the front and rear sides of the connecting frame, and the extrusion frames are staggered left and right. The extrusion frames respectively block the outer sides of the two sealing rings, and the two extrusion frames are symmetrically connected to the extrusion blocks on the sides close to each other. The front and rear corresponding extrusion blocks are respectively located on the inner sides of adjacent pulling blocks, and the lower part of the extrusion block is arranged as an inclined surface. The fourth spring is connected between the left and right parts of the extrusion frame and the adjacent connecting frame.

[0011] Furthermore, it also includes a turning handle and a second shaft. The turning handle is rotatably arranged on the upper part of the fixed frame, and the turning handle is located directly behind the winding wheel on the right side. The second shaft is slidably arranged on the front part of the turning handle, and the second shaft corresponds to the rotating shaft on the winding wheel on the right side.

[0012] Furthermore, the first sleeve shaft and the winding wheel on the left are in a coaxial state.

[0013] Furthermore, a handle is connected to the rear side of the handlebar.

[0014] Furthermore, a plurality of protrusions are provided on the outer wall of the front portion of the screw.

[0015] Beneficial effects:

[0016] 1. The present invention can realize the loosening and clamping of the gate body by the clamping block by rotating the screw rod, so as to achieve the purpose of quickly disassembling and replacing the gate body. Under the action of the sliding block, when the gate body moves downward to the flue position, it can automatically move outward to realize the effective closure of the flue, avoid the friction caused by direct contact between the gate body and the flue, reduce friction loss, and thus extend the service life of the gate body.

[0017] 2. The sealing ring of the present invention can move outward to block the gap between the flue and the gate body, thereby achieving the purpose of sealing and preventing gas leakage.

[0018] 3. The present invention pulls the second sleeve shaft forward and sleeves it on the right winding wheel, and then rotates the handle, so that the second sleeve shaft can be used to drive the right winding wheel to rotate, and the left winding wheel can be driven to rotate synchronously through the pulley and the flat belt, so as to be used for emergency in case of motor damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the connecting frame of the present invention after being cut open.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the motor, winding wheel and pull rope of the present invention.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the fixing bracket, the motor and the first sleeve shaft of the present invention.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of components such as a pull rope, a connecting frame and a pull block of the present invention.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the connecting frame and the gate body of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the screw rod, the clamping block and the second spring of the present invention.

[0026] Figure 8 It is a schematic diagram of a first partial three-dimensional structure of the sealing mechanism of the present invention.

[0027] Fig. 9 It is a schematic diagram of a second partial three-dimensional structure of the sealing mechanism of the present invention.

[0028] Fig.10 It is a schematic diagram of a first partial three-dimensional structure of the reset mechanism of the present invention.

[0029] Fig.11 It is a schematic diagram of a second partial three-dimensional structure of the reset mechanism of the present invention.

[0030] Fig.12 It is a schematic diagram of the three-dimensional structure of the turning handle and the second sleeve shaft of the present invention.

[0031] Explanation of the reference numerals: 1: fixed frame, 2: motor, 3: first sleeve shaft, 4: winding wheel, 41: pulley, 42: flat belt, 5: pull rope, 7: connecting frame, 8: pull block, 9: protective cover, 10: sliding block, 11: first spring, 12: gate body, 13: screw rod, 14: clamping block, 15: second spring, 16: sliding frame, 17: sealing mechanism, 171: sealing ring, 172: push rod, 173: third spring, 18: reset mechanism, 181: extrusion frame, 182: extrusion block, 183: fourth spring, 191: turning handle, 192: second sleeve shaft. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0033] Example 1: A lightweight flue damper that is easy to install and has a long service life, see Figure 1-Figure 8As shown, it includes a fixed frame 1, a connecting frame 7, a sliding block 10, a first spring 11, a gate body 12, a control switch mechanism, a screw 13, a block 14, a second spring 15 and a sliding frame 16. The fixed frame 1 is provided with a control switch mechanism, and the control switch mechanism is connected to the connecting frame 7. The left and right parts of the inner wall of the connecting frame 7 are both symmetrically slidably provided with sliding blocks 10 in a front-to-back manner. The sliding blocks 10 and the connecting frame 7 are symmetrically connected to each other in an up-and-down manner. The outer sides of the four sliding blocks 10 are all symmetrically threaded with screws 13, and a plurality of protrusions are provided on the outer wall of the front part of the screw 13. The side of the four sliding blocks 10 close to each other is symmetrically slidably provided with a block 14 in a up-and-down manner, and the screw 13 abuts against the adjacent block 1 4. The four clamping blocks 14 on the same side are arranged with an inclined surface on one side close to the screw rod 13. Two second springs 15 are connected between the eight clamping blocks 14 and the adjacent sliding blocks 10. The gate body 12 is slidably connected between the four clamping blocks 14 on the same side. The gate body 12 can control the opening and closing of the flue by moving up and down. A sliding frame 16 is slidably arranged in the middle of the connecting frame 7. The sliding frame 16 is located between the two gate bodies 12, and the front and rear sides of the lower part of the sliding frame 16 are arranged with inclined surfaces. The gate body 12 and the sliding block 10 are in contact with the inclined surface at the lower part of the sliding frame 16. The sliding frame 16 is used to make the gate body 12 move outward to block the flue to close it, so as to avoid direct contact with the flue when the gate body 12 moves up and down to generate friction and cause wear.

[0034] See also Figure 1 , Figure 3 , Figure 4 , Figure 5 and Fig.12 As shown, the control switch mechanism includes a motor 2, a first sleeve shaft 3, a winding wheel 4, a pulley 41, a flat belt 42, a pull rope 5, a pull block 8 and a protective cover 9. The motor 2 is detachably mounted on the top of the fixed frame 1. The first sleeve shaft 3 is slidably arranged on the output shaft of the motor 2 through a coupling. The winding wheel 4 is rotatably arranged on the upper part of the fixed frame 1. The winding wheel 4 on the left is slidably connected to the first sleeve shaft 3. The winding wheels 4 are arranged in a left-right arrangement. The first sleeve shaft 3 and the winding wheel 4 on the left are in a coaxial state. A pulley 41 is connected to the wire wheel 4, and a flat belt 42 is wound between the two pulleys 41. A pull rope 5 is wound on the wire wheel 4, and the lower end of the pull rope 5 passes through the upper part of the connecting frame 7. The loosening and tightening of the pull rope 5 is used to control the up and down movement of the gate body 12 to open and close the flue. The lower end of the pull rope 5 is connected to a pull block 8, and the pull block 8 is slidably connected to the connecting frame 7. A protective cover 9 is symmetrically connected between the top of the connecting frame 7 and the fixed frame 1, and the pull rope 5 is located inside the protective cover 9, and the protective cover 9 is used to protect the pull rope 5.

[0035] Initially, the second spring 15 is in a stretched state. When the flue damper needs to be used to control the gas flow, the device needs to be installed at the designated flue first so that the damper body is located between the two flues. When the flue needs to be closed, the motor 2 can be started, and the output shaft of the motor 2 rotates to drive the first sleeve shaft 3 to rotate accordingly. The rotation of the first sleeve shaft 3 drives the winding wheel 4 and the pulley 41 on the left to rotate. The rotation of the pulley 41 on the left will drive the flat belt 42 to rotate. The rotation of the flat belt 42 can drive the pulley 41 and the winding wheel 4 on the right to rotate, so that the two winding wheels 4 rotate synchronously and the pull rope 5 is released at the same time. , driving the pull block 8 and the connecting frame 7 to move downward, the connecting frame 7 moves downward and drives the gate body 12 and the sliding frame 16 to move downward together, and the protective cover 9 will be stretched to protect the pull rope 5. When the sliding frame 16 moves downward and contacts the bottom of the fixed frame 1, the pull rope 5 will continue to be released downward. Under the gravity of the connecting frame 7 and the gate body 12, the connecting frame 7 and the gate body 12 will continue to move downward, and will also drive the sliding block 10 to move downward. Since the lower part of the sliding frame 16 is an inclined surface, the sliding block 10 and the gate body 12 will move outward to block the two flues respectively, and the first spring 11 is compressed, so that The two flues are blocked by the gate body 12, so as to achieve the purpose of cutting off the gas flow between the two flues and realize the closure of the flue. In addition, this closing method will not cause the gate body 12 to directly contact and rub with the flue, thereby extending the service life of the gate body 12. After the flue is closed, the motor 2 can be turned off. When the flue needs to be opened for gas circulation, the motor 2 is started again and controlled to reverse. The first spring 11 returns to its original state, which can drive the sliding block 10 and the gate body 12 to move inward and upward to reset, so that they no longer block the flow of the two flues. Finally, the motor 2 is turned off, so that the flue can be opened. To realize the switch control of the flue, when the gate body 12 needs to be disassembled, repaired or replaced, first rotate the screw 13 so that the screw 13 moves outward to loosen the block 14, and the second spring 15 is compressed to loosen the gate body 12. Then people can quickly remove the gate body 12 for repair or replacement. After the repaired or replaced gate body 12 is put back to its original position, reverse the screw 13 so that the screw 13 moves inward and squeezes the adjacent block 14 to move inward to clamp the gate body 12, and the second spring 15 returns to its original state, thereby quickly completing the disassembly, maintenance and replacement of the gate body 12, and the operation is relatively convenient.

[0036] Example 2: Based on Example 1, refer to Figure 1 , Figure 8 and Fig. 9As shown, it also includes a sealing mechanism 17, which includes a sealing ring 171, a push rod 172 and a third spring 173. A sealing ring 171 is slidably arranged in the middle of the gate body 12, and the sealing ring 171 is circular. A push rod 172 is slidably arranged on the front side of the sliding frame 16, and a push rod 172 is also slidably arranged on the rear side of the sliding frame 16. The two push rods 172 on the same side are arranged in an up-and-down arrangement. The sealing ring 171 is respectively located on the front and rear sides of the sliding frame 16. The push rod 172 moves outward to drive the sealing ring 171 to move outward, so that it blocks the gap between the flue and the gate body 12 to achieve the purpose of sealing. The third spring 173 is connected between the rear side of the front push rod 172 and the sliding frame 16, and the third spring 173 is also connected between the front side of the rear push rod 172 and the sliding frame 16.

[0037] See also Figure 1 , Fig.10 and Fig.11 As shown, a reset mechanism 18 is also included, and the reset mechanism 18 includes an extrusion frame 181, an extrusion block 182 and a fourth spring 183. The upper parts of the front and rear sides of the connecting frame 7 are slidably provided with extrusion frames 181, and the extrusion frames 181 are staggered left and right. The extrusion frames 181 respectively block the outer sides of the two sealing rings 171. The extrusion frames 181 move inwardly and contact the sealing rings 171 to push the sealing rings 171 to move inwardly and reset. The sides of the two extrusion frames 181 that are close to each other are symmetrically connected with extrusion blocks 182. The front and rear corresponding extrusion blocks 182 are respectively located on the inner sides of the adjacent pulling blocks 8. The lower part of the extrusion blocks 182 is in an inclined state. The fourth spring 183 is connected between the left and right parts of the extrusion frame 181 and the adjacent connecting frame 7.

[0038] Initially, the third spring 173 and the fourth spring 183 are both in a compressed state. When the pull block 8 and the gate body 12 move downward to close the flue, the pull block 8 no longer resists the extrusion block 182, and the fourth spring 183 is reset, driving the extrusion frame 181 and the extrusion block 182 to move outward to loosen the sealing ring 171, and the downward movement of the gate body 12 will drive the sealing ring 171 to move downward, so that the two sealing rings 171 are respectively in contact with the adjacent push rods 172, and the third spring 173 is stretched to drive the push rod 172 to move outward, so that the sealing ring 171 can be pushed outward to block the flue and the flue. The gap between the gate bodies 12 is sealed to prevent gas leakage. When the pull block 8 moves upward and contacts the extrusion block 182, the pull block 8 will apply inward pressure to the extrusion block 182 to make it move inward, driving the extrusion frame 181 to move inward, and the fourth spring 183 returns to its original state. The extrusion frame 181 moves inward and contacts the sealing ring 171 to push the sealing ring 171 to move inward and reset, and can squeeze the push rod 172 to move inward and reset. The third spring 173 returns to its original state, and finally the sealing ring 171 is pulled upward and reset by the pull rope 5 to complete the reset process.

[0039] See also Fig.12 As shown, it also includes a turning handle 191 and a second sleeve shaft 192. The turning handle 191 is rotatably arranged on the upper part of the fixed frame 1. The turning handle 191 is located directly behind the winding wheel 4 on the right. A handle is welded on the rear side of the turning handle 191. The second sleeve shaft 192 is slidably arranged on the front part of the turning handle 191. The second sleeve shaft 192 corresponds to the rotating shaft on the winding wheel 4 on the right. The second sleeve shaft 192 can be used to manually rotate the turning handle 191 to control the switch of the gate body 12 for emergency response.

[0040] When the motor 2 cannot operate normally due to a malfunction, manual emergency measures can be taken. First, the first sleeve shaft 3 is safely pulled back from the left winding wheel 4 to ensure that it is completely disconnected from the winding wheel 4. At this time, people can push the second sleeve shaft 192 forward to make it accurately fit on the right winding wheel 4, and then turn the handle 191 to drive the right winding wheel 4 to rotate using the second sleeve shaft 192, and drive the left winding wheel 4 to rotate synchronously through the pulley 41 and the flat belt 42, which is used for emergency use when the motor 2 is damaged.

[0041] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A light flue damper which is easy to install and has a long service life, comprising a fixing frame (1), characterized in that: The invention also comprises a connecting frame (7), a sliding block (10), a first spring (11), a gate body (12), a control switch mechanism, a screw rod (13), a clamping block (14), a second spring (15) and a sliding frame (16). The control switch mechanism is arranged on the fixing frame (1), the connecting frame (7) is connected to the control switch mechanism, the sliding block (10) is symmetrically arranged in a sliding manner on the left and right parts of the inner wall of the connecting frame (7) in a front-back direction, three first springs (11) are symmetrically connected between the sliding block (10) and the connecting frame (7) in an upper-lower direction, the screw rod (13) is symmetrically arranged in a threaded manner on the outer sides of the four sliding blocks (10) in an upper-lower direction, and the clamping block (14) is symmetrically arranged in a sliding manner on the four sliding blocks (10) in an upper-lower direction. 0) on the side close to each other, the screw rod (13) abuts against the adjacent block (14), the side of the four blocks (14) on the same side close to the screw rod (13) is set as an inclined surface, two second springs (15) are connected between the eight blocks (14) and the adjacent sliding blocks (10), the gate body (12) is slidably connected between the four blocks (14) on the same side, the sliding frame (16) is slidably set in the middle of the connecting frame (7), the sliding frame (16) is located between the two gate bodies (12), and the front and rear sides of the lower part of the sliding frame (16) are set as inclined surfaces, and the gate body (12) and the sliding block (10) are both in contact with the inclined surface of the lower part of the sliding frame (16).

2. A light flue damper that is easy to install and has a long service life according to claim 1, characterized in that: The control switch mechanism comprises a motor (2), a first sleeve shaft (3), a winding wheel (4), a belt pulley (41), a flat belt (42), a pull rope (5), a pull block (8) and a protective cover (9), wherein the motor (2) is mounted on the top of the fixing frame (1), the first sleeve shaft (3) is slidably arranged on the output shaft of the motor (2), the winding wheel (4) is symmetrically rotatably arranged on the upper part of the fixing frame (1), the winding wheel (4) on the left side is slidably connected to the first sleeve shaft (3), the belt pulley (41) is connected to the winding wheel ( 4), the winding wheels (4) are arranged in a left-right arrangement, the flat belt (42) is wound between the two pulleys (41), the pull rope (5) is wound around the winding wheel (4), the lower end of the pull rope (5) passes through the upper part of the connecting frame (7), the pull block (8) is connected to the lower end of the pull rope (5), the pull block (8) is slidably connected to the connecting frame (7), the protective cover (9) is symmetrically connected between the top of the connecting frame (7) and the fixed frame (1), and the pull rope (5) is located inside the protective cover (9).

3. A light flue damper that is easy to install and has a long service life according to claim 2, characterized in that: The invention also comprises a sealing mechanism (17), wherein the sealing mechanism (17) comprises a sealing ring (171), a push rod (172) and a third spring (173), wherein the sealing ring (171) is slidably arranged in the middle of the gate body (12), the push rod (172) is slidably arranged in the front side of the sliding frame (16) in a left-right symmetrical manner, and the push rod (172) is also slidably arranged in the rear side of the sliding frame (16) in a left-right symmetrical manner, and the two push rods (172) on the same side are arranged in an upper and lower arrangement, and the sealing ring (171) is respectively located at the front and rear sides of the sliding frame (16), and the third spring (173) is connected between the rear side of the push rod (172) at the front and the sliding frame (16), and the third spring (173) is also connected between the front side of the push rod (172) at the rear and the sliding frame (16).

4. The light flue damper plate according to claim 3, which is easy to install and has a long service life, is characterized in that: The invention also comprises a reset mechanism (18), which comprises an extrusion frame (181), an extrusion block (182) and a fourth spring (183). The extrusion frame (181) is slidably arranged on the upper parts of the front and rear sides of the connecting frame (7). The extrusion frames (181) are arranged in a left-right staggered manner. The extrusion frames (181) respectively block the outer sides of the two sealing rings (171). The extrusion blocks are symmetrically connected to the sides of the two extrusion frames that are close to each other. The front and rear corresponding extrusion blocks (182) are respectively located on the inner sides of the adjacent pulling blocks (8). The lower part of the extrusion block (182) is arranged in an inclined surface. The fourth spring (183) is connected between the left and right parts of the extrusion frame (181) and the adjacent connecting frame (7).

5. A light flue damper that is easy to install and has a long service life according to claim 4, characterized in that: The invention also comprises a turning handle (191) and a second sleeve shaft (192), wherein the turning handle (191) is rotatably arranged on the upper part of the fixing frame (1), and the turning handle (191) is located directly behind the winding wheel (4) on the right side, and the second sleeve shaft (192) is slidably arranged in front of the turning handle (191), and the second sleeve shaft (192) corresponds to the rotating shaft on the winding wheel (4) on the right side.

6. A light flue damper that is easy to install and has a long service life according to claim 5, characterized in that: The first sleeve shaft (3) and the winding wheel (4) on the left side are in a coaxial state.

7. A light flue damper that is easy to install and has a long service life according to claim 6, characterized in that: The rear side of the turning handle (191) is connected with a handle.

8. A light flue damper that is easy to install and has a long service life according to claim 7, characterized in that: A plurality of protrusions are provided on the outer wall of the front portion of the screw rod (13).

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