One-way double-open type baffle stop door for induced draft fan

Abstract

The utility model relates to the technical field of induced draft fans, and discloses a one-way double-open baffle stop door for an induced draft fan, which comprises a frame, grooves are respectively arranged at the bottom of the inner wall of the frame, an opening and closing component is arranged in the frame, and a buffer support component is arranged in each groove. The baffles are opened and closed by arranging the opening and closing assemblies, when the baffles are closed, the two baffles can be stably fixed through the fixing frame, the baffles can be supported through the internal reinforcing rods, the stability of the baffles is ensured, noise can be isolated through the sound insulation cotton, the fixing frame is sealed through the sealing gasket, and when the baffles are started to be opened and closed, the baffles can be stably fixed through the fixing frame. The air cylinder is started to drive the connecting concave block to move and then drive the connecting rod to push the toothed plate to move, the toothed plate drives the gear, the ejector rod and the fixing frame to be opened and closed, the flow guide holes can reduce wind resistance of the fixing frame, and therefore the opening and closing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of induced draft fans, in particular to a one-way double-opening baffle stop door for induced draft fans. Background Art

[0002] With the diversified development of industry, the application requirements of induced draft fans in different industries are also becoming increasingly diversified. In the power industry, power station boilers require induced draft fans with large flow and high wind pressure to discharge the exhaust gas generated by combustion and ensure the efficient operation of the boiler. In the chemical industry, induced draft fans need to be corrosion-resistant and explosion-proof to adapt to the special gas environment in chemical production. In the building materials industry, such as cement plants, induced draft fans must be able to handle exhaust gas containing a large amount of dust. In order to meet the special needs of these different industries, various specialized induced draft fans have emerged. The explosion-proof induced draft fans designed for the chemical industry use special explosion-proof materials and structures for their casings and impellers to prevent electric sparks generated during operation from causing explosion accidents. The dust induced draft fans designed for cement plants use special wear-resistant materials and anti-blocking designs at the air inlet and impeller to cope with the wear and blockage problems of dust.

[0003] In the existing technology, in power station boilers, one-way double-opening damper stop doors are installed at the air inlet or outlet of the induced draft fan. When the boiler needs to adjust the amount of air required for combustion, the air flow entering or exiting the boiler can be accurately controlled by adjusting the opening of the stop door. During use, the existing baffles are usually single-layer baffles, which cannot isolate the sound generated during operation. Moreover, after the baffle is closed, if the baffle is not buffered under the pressure of the airflow, it may cause damage to the drive mechanism.

[0004] Therefore, a one-way double-opening damper stop door for an induced draft fan is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a one-way double-opening baffle stop door for an induced draft fan to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a one-way double-opening baffle stop door for an induced draft fan, comprising a frame, grooves are respectively provided at the bottom of the inner wall of the frame, an opening and closing component is provided inside the frame, and a buffer support component is provided inside the groove.

[0007] Preferably, the opening and closing assembly specifically includes: a sealing gasket, fixedly mounted on the inner wall surface of the frame; a fixed frame, respectively arranged between the sealing gaskets; a bottom rod, fixedly mounted on the bottom of the fixed frame; a top rod, fixedly mounted on the top of the fixed frame; guide holes, equidistantly and evenly opened on one side of the fixed frame; an L-shaped plate, fixedly mounted on the top of the frame; and a support plate, fixedly mounted on the front of the frame.

[0008] Preferably, the outer wall of the fixed frame contacts the surface of the sealing gasket, the bottom of the bottom rod moves through the bottom of the inner wall of the frame and extends to the inside of the frame, and the other end of the top rod moves through the top of the inner wall of the frame and extends to the top of the frame.

[0009] Preferably, reinforcing rods are evenly and equidistantly fixed between the inner walls of the fixed frame, baffles are evenly and equidistantly fixed between the inner walls of the fixed frame, sound insulation cotton is fixedly installed on one side of the baffle, and the surface of the sound insulation cotton is in contact with the surface of the reinforcing rods.

[0010] Preferably, a gear is fixedly installed on the other end of the top rod, and a tooth plate is slidably connected to the inner wall of the L-shaped plate. The bottom of the tooth plate contacts the top of the frame, and the surface of the tooth plate is meshed with the surface of the gear, and a concave block is fixedly installed on the surface of the tooth plate.

[0011] Preferably, a cylinder is fixedly installed on the top of the support plate, and a connecting recessed block is fixedly installed on the telescopic end of the cylinder. A connecting rod is equidistantly and movably connected between the inner walls of the connecting recessed blocks, and the other end of the connecting rod is movably connected to the inner wall of the recessed block. The noise can be isolated by the fixed frame, bottom rod, top rod, reinforcing rod, baffle and sound insulation cotton. At the same time, the reinforcing rod can improve the strength of the baffle. When closed, the outer wall of the fixed frame can be sealed by the sealing gasket. The fixed frame is driven to rotate at an angle through the cooperation among the gear, L-shaped plate, tooth plate, recessed block, support plate, cylinder, connecting recessed block, connecting rod, bottom rod and top rod to allow airflow to pass through. The resistance to airflow can be minimized through the guide hole, and finally the opening and closing effect is achieved.

[0012] Preferably, the buffer support assembly specifically includes: a motor fixedly mounted on the inner wall surface of the groove; a screw fixedly mounted on the output end of the motor; and a slide groove provided on both sides of the inner wall of the groove.

[0013] Preferably, the outer wall of the screw is threadedly connected to a threaded block, and both sides of the threaded block are fixedly connected to a slider, the surface of the slider is slidably connected to the inner wall of the slide groove, the top of the threaded block is fixedly installed with a support block, and a damper is equidistantly fixedly installed on one side of the support block, and the telescopic end of the damper is fixedly installed with an L-shaped guide plate, and the outer wall movable sleeve of the damper is provided with a spring, one end of the spring is fixedly connected to one side of the support block, and the other end of the spring is fixedly connected to the surface of the L-shaped guide plate. When the baffle is about to close, the motor, screw, threaded block, slide groove, and slider drive the support block, damper, L-shaped guide plate, and spring to support and buffer the fixed frame to avoid the influence of windflow, thereby finally achieving the effect of buffering support.

[0014] The utility model provides a one-way double-opening baffle stop door for an induced draft fan. It has the following beneficial effects:

[0015] (1) The utility model realizes the opening and closing of the baffle by setting an opening and closing component. When closing, the two baffles can be stably fixed by the fixing frame. The internal reinforcing rod can support the baffle to ensure the stability of the baffle. The noise can be isolated by the sound insulation cotton. The fixing frame is sealed by the sealing gasket. When the baffle is started to open and close, the starting cylinder drives the connecting concave block to move, and then drives the connecting rod to push the tooth plate to move. The tooth plate drives the gear, the top rod, and the fixing frame to open and close. The guide hole can reduce the wind resistance of the fixing frame, thereby achieving the opening and closing effect.

[0016] (2) The utility model provides a buffer support assembly to buffer the closing of the fixed frame. When the baffle is opened, the threaded block moves to one end of the screw. When the fixed frame is closed, the motor is started to drive the screw to rotate, and the rotation of the screw drives the threaded block to move. The threaded block slides in the slide groove through the slider, and then the threaded block drives the support block, damper, L-shaped guide plate, and spring to move to the center position of the frame. The fixed frame is buffered by the damper and spring, thereby achieving the effect of support and buffering. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the local structure of the sealing gasket of the utility model;

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure of A;

[0020] Figure 4 This is a schematic diagram of the local structure of the reinforcing rod of the utility model;

[0021] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure of B;

[0022] Figure 6 This is a schematic diagram of the partial structure of the buffer support assembly of the utility model;

[0023] Figure 7 For this utility model Figure 6 Schematic diagram of the enlarged structure of C in the middle.

[0024] In the figure: 1 frame, 2 opening and closing assembly, 211 sealing gasket, 212 fixing frame, 213 bottom rod, 214 top rod, 215 reinforcing rod, 216 baffle, 217 sound insulation cotton, 218 diversion hole, 219 gear, 2111 L-shaped plate, 2112 tooth plate, 2113 concave block, 2114 support plate, 2115 cylinder, 2116 connecting concave block, 2117 connecting rod, 3 buffer support assembly, 311 motor, 312 screw, 313 threaded block, 314 slide groove, 315 slider, 316 support block, 317 damper, 318 L-shaped guide plate, 319 spring. DETAILED DESCRIPTION

[0025] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0026] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] Example 1:

[0028] The preferred embodiment of the one-way double-opening baffle stop door for the induced draft fan provided by the utility model is as follows: Figure 1-7 As shown: A one-way double-opening baffle stop door for an induced draft fan includes a frame 1, grooves are respectively opened at the bottom of the inner wall of the frame 1, an opening and closing component 2 is arranged inside the frame 1, and a buffer support component 3 is arranged inside the groove.

[0029] The opening and closing assembly 2 specifically includes: a sealing gasket 211, fixedly mounted on the inner wall surface of the frame 1; a fixed frame 212, respectively arranged between the sealing gaskets 211; a bottom rod 213, fixedly mounted on the bottom of the fixed frame 212; a top rod 214, fixedly mounted on the top of the fixed frame 212; a guide hole 218, evenly spaced and evenly opened on one side of the fixed frame 212; an L-shaped plate 2111, fixedly mounted on the top of the frame 1; and a support plate 2114, fixedly mounted on the front of the frame 1.

[0030] The outer wall of the fixed frame 212 contacts the surface of the sealing gasket 211, the bottom of the bottom rod 213 moves through the bottom of the inner wall of the frame 1 and extends to the inside of the frame 1, and the other end of the top rod 214 moves through the top of the inner wall of the frame 1 and extends to the top of the frame 1.

[0031] Reinforcement rods 215 are evenly and equidistantly fixed between the inner walls of the fixed frame 212 , baffles 216 are evenly and equidistantly fixed between the inner walls of the fixed frame 212 , and sound insulation cotton 217 is fixedly installed on one side of the baffle 216 , and the surface of the sound insulation cotton 217 is in contact with the surface of the reinforcement rods 215 .

[0032] A gear 219 is fixedly installed on the other end of the top rod 214, and a tooth plate 2112 is slidably connected to the inner wall of the L-shaped plate 2111. The bottom of the tooth plate 2112 contacts the top of the frame 1, and the surface of the tooth plate 2112 is meshed with the surface of the gear 219. A recessed block 2113 is fixedly installed on the surface of the tooth plate 2112.

[0033] A cylinder 2115 is fixedly installed on the top of the support plate 2114, and a connecting recess 2116 is fixedly installed on the telescopic end of the cylinder 2115. A connecting rod 2117 is equidistantly and movably connected between the inner walls of the connecting recess 2116, and the other end of the connecting rod 2117 is movably connected to the inner wall of the recess 2113.

[0034] In this example, the opening and closing of the baffle 216 is achieved by setting an opening and closing component 2. When closed, the two baffles 216 can be stably fixed by the fixed frame 212, and the internal reinforcing rod 215 can support the baffle 216 to ensure the stability of the baffle. The noise can be isolated by the sound insulation cotton 217, and the fixed frame 212 is sealed by the sealing gasket 211. When the baffle 216 is started to open and close, the starting cylinder 2115 drives the connecting recess 2116 to move, and then drives the connecting rod 2117 to push the tooth plate 2112 to move. The tooth plate 2112 drives the gear 219, the top rod 214, and the fixed frame 212 to open and close, thereby achieving the opening and closing effect.

[0035] Example 2:

[0036] On the basis of the first embodiment, the present invention provides a preferred embodiment of a one-way double-opening baffle stop door for an induced draft fan. Figure 1-7 As shown, the buffer support assembly 3 specifically includes: a motor 311, fixedly mounted on the inner wall surface of the groove; a screw 312, fixedly mounted on the output end of the motor 311; and a slide groove 314, which is opened on both sides of the inner wall of the groove.

[0037] The outer wall of the screw rod 312 is threadedly connected to a threaded block 313, and sliders 315 are fixedly connected to both sides of the threaded block 313. The surface of the slider 315 is slidably connected to the inner wall of the slide groove 314. A support block 316 is fixedly installed on the top of the threaded block 313, and a damper 317 is equidistantly fixedly installed on one side of the support block 316. An L-shaped guide plate 318 is fixedly installed on the telescopic end of the damper 317. A spring 319 is movably sleeved on the outer wall of the damper 317. One end of the spring 319 is fixedly connected to one side of the support block 316, and the other end of the spring 319 is fixedly connected to the surface of the L-shaped guide plate 318.

[0038] In this example, a buffer support assembly 3 is provided to buffer the closing of the fixed frame 212. When the baffle 216 is opened, the threaded block 313 moves to one end of the screw 312. When the fixed frame 216 is closed, the starting motor 311 drives the screw 312 to rotate. The rotation of the screw 312 drives the threaded block 313 to move. The threaded block 313 slides in the slide groove 314 through the slider 315. Then the threaded block 313 drives the support block 316, the damper 317, the L-shaped guide plate 318, and the spring 319 to move to the center position of the frame 1. The fixed frame 212 is buffered by the damper 317 and the spring 319, thereby achieving the function of support and buffering.

[0039] Working principle: First, the opening and closing of the baffle 216 is realized by setting the opening and closing component 2. When closing, the two baffles 216 can be stably fixed by the fixed frame 212, and the internal reinforcing rod 215 can support the baffle 216 to ensure the stability of the baffle. The noise can be isolated by the sound insulation cotton 217 to ensure the comfort of the working environment. The fixed frame 212 is sealed by the sealing gasket 211. When the baffle 216 is started to open and close, the starting cylinder 2115 drives the connecting concave block 2116 to move, and then drives the connecting rod 2117 to push the tooth plate 2112 to move. At this time, the connecting rod 2117 is in a parallel state, and the tooth plate 2112 drives the gear 219, the top rod 214, and the fixed frame 212 to open and close 90 degrees. The fixed frame 212 rotates on the inner wall of the frame 1 through the bottom rod 213 to allow air to circulate. The guide holes 218 on the fixed frame 212 can minimize wind resistance so that airflow can pass smoothly. When the fixed frame 212 is closed and needs to be buffered, the fixed frame 212 is buffered by setting a buffer support assembly 3. When the baffle 216 is opened, the threaded block 313 moves to one end of the screw 312. When the fixed frame 216 is closed, the motor 311 is started to drive the screw 312 to rotate. The rotation of the screw 312 drives the threaded block 313 to move. The threaded block 313 slides in the slide groove 314 through the slider 315. Then the threaded block 313 drives the support block 316, the damper 317, the L-shaped guide plate 318, and the spring 319 to move to the center position of the frame 1. The fixed frame 212 is buffered by the damper 317 and the spring 319, thereby achieving the functions of opening and closing and supporting buffering.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A one-way double-opening baffle stop door for an induced draft fan, comprising a frame (1), characterized in that: Grooves are respectively provided at the bottom of the inner wall of the frame (1); an opening and closing assembly (2) is provided inside the frame (1); and a buffer support assembly (3) is provided inside the groove.

2. The one-way double-opening baffle stop door for an induced draft fan according to claim 1, characterized in that: The opening and closing component (2) specifically includes: A sealing gasket (211) is fixedly mounted on the inner wall surface of the frame (1); The fixing frames (212) are respectively arranged between the sealing pads (211); A bottom rod (213) is fixedly mounted on the bottom of the fixed frame (212); A top rod (214) is fixedly mounted on the top of the fixed frame (212); The guide holes (218) are evenly and equidistantly provided on one side of the fixed frame (212); An L-shaped plate (2111) fixedly mounted on the top of the frame (1); The support plate (2114) is fixedly mounted on the front side of the frame (1).

3. The one-way double-opening baffle stop door for an induced draft fan according to claim 2, characterized in that: The outer wall of the fixed frame (212) contacts the surface of the sealing gasket (211), the bottom of the bottom rod (213) movably penetrates the bottom of the inner wall of the frame (1) and extends to the interior of the frame (1), and the other end of the top rod (214) movably penetrates the top of the inner wall of the frame (1) and extends to the top of the frame (1).

4. The one-way double-opening baffle stop door for an induced draft fan according to claim 2, characterized in that: Reinforcement rods (215) are fixedly installed at equal intervals between the inner walls of the fixed frame (212), baffles (216) are fixedly installed at equal intervals between the inner walls of the fixed frame (212), and sound insulation cotton (217) is fixedly installed on one side of the baffle (216), and the surface of the sound insulation cotton (217) is in contact with the surface of the reinforcement rods (215).

5. The one-way double-opening baffle stop door for an induced draft fan according to claim 2, characterized in that: A gear (219) is fixedly mounted on the other end of the push rod (214); a toothed plate (2112) is slidably connected to the inner wall of the L-shaped plate (2111); the bottom of the toothed plate (2112) contacts the top of the frame (1); and the surface of the toothed plate (2112) is meshedly connected to the surface of the gear (219); and a concave block (2113) is fixedly mounted on the surface of the toothed plate (2112).

6. The one-way double-opening baffle stop door for an induced draft fan according to claim 2, characterized in that: A cylinder (2115) is fixedly installed on the top of the support plate (2114), and a connecting concave block (2116) is fixedly installed on the telescopic end of the cylinder (2115). A connecting rod (2117) is equidistantly and movably connected between the inner walls of the connecting concave block (2116), and the other end of the connecting rod (2117) is movably connected to the inner wall of the concave block (2113).

7. The one-way double-opening baffle stop door for an induced draft fan according to claim 1, characterized in that: The buffer support assembly (3) specifically includes: A motor (311) is fixedly mounted on the inner wall surface of the groove; A screw (312) is fixedly mounted on the output end of the motor (311); The chute (314) is provided on both sides of the inner wall of the groove.

8. The one-way double-opening baffle stop door for an induced draft fan according to claim 7, characterized in that: The outer wall of the screw rod (312) is threadedly connected to a threaded block (313), and sliders (315) are fixedly connected to both sides of the threaded block (313). The surface of the slider (315) is slidably connected to the inner wall of the slide groove (314). A support block (316) is fixedly installed on the top of the threaded block (313), and a damper (317) is fixedly installed on one side of the support block (316) at an equal distance. An L-shaped guide plate (318) is fixedly installed on the telescopic end of the damper (317). A spring (319) is movably sleeved on the outer wall of the damper (317), and one end of the spring (319) is fixedly connected to one side of the support block (316), and the other end of the spring (319) is fixedly connected to the surface of the L-shaped guide plate (318).

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