Boiler feed screening mechanism

Abstract

The utility model discloses a boiler feed screening mechanism, which relates to the technical field of coal ash screening, and comprises a box body, a base, a support frame, a telescopic rod, a hinge seat and a filter plate, two ends of the box body are respectively provided with a feed port and a first discharge port, the bottom of the box body is provided with a second discharge port, one end of the support frame is fixedly connected with the base, and the other end of the support frame is fixedly connected with the hinge seat. The other end of the supporting frame is rotationally connected with one end of the box body, the hinge seat is slidably connected with the other end of the box body, the telescopic rod is fixedly arranged on the base, the telescopic end of the telescopic rod is hinged to the hinge seat, and the filter plate is slidably connected with the box body. And flexible adjustment can be performed according to the granularity, humidity, viscosity and other characteristics of fly ash, so that the screening efficiency is improved, and the problems of particle accumulation and blockage are reduced. And meanwhile, through sliding of the filter plate, the fly ash particles are subjected to more uniform and more sufficient screening force in the screening process, and therefore the screening uniformity and accuracy are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fly ash screening, and particularly relates to a boiler feeding screening mechanism. BACKGROUND

[0002] Fly ash is the main solid waste after coal-fired boiler combustion, and its effective treatment and utilization have been the focus of the industry. The particle size distribution of fly ash has an important influence on its subsequent application (such as building materials, soil conditioners or extraction of useful elements). Therefore, accurate screening of fly ash during the boiler feeding stage is particularly important.

[0003] In the prior art, a boiler fly ash coarse and fine powder screening device is disclosed in Chinese patent No. CN220760050U, which includes a filter device, the outer surface of the filter device is rotatably connected with a main body, the outer surface of the main body is fixedly connected with a coarse material port, the bottom of the coarse material port is provided with a discharge device, and the filter device includes a first motor shaft. The device drives the vertical bevel gear through the horizontal bevel gear at the bottom end of the first motor shaft, the vertical bevel gear drives the shaft, the shaft drives the oscillating plate to repeatedly lift the filter plate, and the filter plate makes up-and-down sliding movement on the sleeve-connected slide rod, so that the fly ash falling into the filter plate is shaken up.

[0004] The above prior art solution has the following disadvantages: Since the angle of the filter plate is fixed, it cannot be flexibly adjusted according to the particle size, humidity and viscosity of the fly ash, which may lead to ineffective separation of some particles during the screening process, thereby reducing the screening efficiency. At the same time, the fixed-angle filter plate may cause screen clogging when dealing with fly ash with high humidity or high viscosity. This is because these fly ash particles are more likely to accumulate on the filter plate and form clumps, thereby hindering the passage of other particles. In addition, for fly ash of different sources and different properties, a fixed-angle filter plate often cannot provide the best screening effect. This limits the application range of the screening device and reduces its flexibility and versatility. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a boiler feeding screening mechanism to solve the technical problem that in the prior art, the angle of the filter plate is fixed, which cannot be flexibly adjusted according to the particle size, humidity and viscosity of the fly ash, leading to ineffective separation of some particles during the screening process, thereby reducing the screening efficiency.

[0006] The technical problems to be solved by the utility model can be realized through the following technical scheme: a boiler feeding and screening mechanism, including box, base, support frame, telescopic link, hinged seat and filter plate, the both ends of the box are respectively provided with feeding inlet and first discharge outlet, the bottom of the box is provided with second discharge outlet, one end of the support frame is fixedly connected with the base, the other end of the support frame is rotatably connected with one end of the box, the hinged seat is slidably connected with the other end of the box, the telescopic link is fixedly arranged on the base, the telescopic end of the telescopic link is hinged with the hinged seat, the filter plate is slidably connected with the box, the box is provided with driving assembly for driving the filter plate to slide.

[0007] As a further scheme of the utility model: the top of the box is provided with sliding hole, the top of the filter plate is fixedly provided with sliding rod slidably connected with the sliding hole, the top of the sliding rod is fixedly provided with movable plate.

[0008] As a further scheme of the utility model: the driving assembly includes rotating frame, rotating shaft and cam, the rotating frame is fixedly connected with the top of the box, the rotating shaft is rotatably connected with the rotating shaft and is located between the movable plate and the box, the cam is coaxially fixedly connected with the rotating shaft.

[0009] As a further scheme of the utility model: the driving assembly further includes rotary motor, the rotary motor is fixedly connected with the rotating frame, the output end of the rotary motor is coaxially fixedly connected with the rotating shaft.

[0010] As a further scheme of the utility model: the bottom of the box is provided with sliding groove, the top of the hinged seat is slidably connected with the sliding groove, the bottom of the hinged seat is hinged with the telescopic end of the telescopic link.

[0011] As a further scheme of the utility model: the second discharge outlet is slidably provided with collecting frame, and the side of the collecting frame is fixedly provided with handle.

[0012] The utility model has the beneficial effects that compared with prior art:

[0013] 1、 by adjusting the inclination angle of the box, the particle size, humidity and viscosity of the fly ash can be flexibly adjusted, thereby improving the screening efficiency and reducing the accumulation and blocking problems of the particles.

[0014] 2、 through the continuous rotation of the rotary motor, the movable plate, the sliding rod and the filter plate will periodically slide up and down in the box, thereby realizing the screening of the fly ash.

[0015] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings.

[0017] Figure 1 It is a kind of boiler feed screening mechanism's three-dimensional structure schematic diagram.

[0018] Figure 2 It is the three-dimensional structure schematic diagram of the driving assembly in the present application.

[0019] Figure 3 It is the structure sectional view of the box body in the present application.

[0020] The reference signs include:

[0021] 1, box body;2, base;3, support frame;4, telescopic rod;5, hinged seat;6, filter plate;7, feed inlet;8, first discharge port;9, second discharge port;10, driving assembly;11, sliding hole;12, sliding rod;13, movable plate;14, rotating frame;15, rotating shaft;16, cam;17, rotary motor;18, sliding groove;19, collection frame. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] As shown in Figures 1 to 3 A kind of boiler feed screening mechanism, including box body 1, base 2, support frame 3, telescopic rod 4, hinged seat 5 and filter plate 6, the both ends of box body 1 are respectively provided with feed inlet 7 and first discharge port 8, the bottom of box body 1 is provided with second discharge port 9, one end of support frame 3 is fixedly connected with base 2, the other end of support frame 3 is rotatably connected with one end of box body 1, hinged seat 5 is slidably connected with the other end of box body 1, telescopic rod 4 is fixedly arranged on base 2, the telescopic end of telescopic rod 4 is hinged with hinged seat 5, specifically, the bottom of box body 1 is provided with sliding groove 18, the top of hinged seat 5 is slidably connected with sliding groove 18, the bottom of hinged seat 5 is hinged with the telescopic end of telescopic rod 4. Filter plate 6 is slidably connected with box body 1, box body 1 is provided with driving assembly 10 for driving filter plate 6 to slide.

[0024] Specifically, by adjusting the telescopic length of the telescopic rod 4, the connection angle of the telescopic rod 4 with the hinge seat 5 can be changed, thereby adjusting the inclination angle of the entire box body 1 relative to the base 2. An optimal screening angle can be preset according to the particle size, humidity, and viscosity of the fly ash. The fly ash enters the box body 1 from the feed port 7 and falls on the filter plate 6. The filter plate 6 slides in the box body 1 by the driving assembly 10, thereby changing the residence time and movement path of the fly ash particles on the filter plate 6. With the sliding of the filter plate 6, the fly ash particles are subjected to the combined action of gravity, friction, and screening force. The particles with smaller particle size, lower humidity, or smaller viscosity are more likely to pass through the screen holes of the filter plate 6 and fall into the bottom of the box body 1 and be discharged through the second discharge port 9. The particles with larger particle size, higher humidity, or larger viscosity are left on the filter plate 6 and continue to slide with the filter plate 6 until they reach the first discharge port 8 and are discharged.

[0025] During the screening process, if the screening efficiency is found to be reduced or the screen is blocked, the inclination angle of the box body 1 and the sliding path of the filter plate 6 can be changed in real time by adjusting the telescopic length of the telescopic rod 4, thereby optimizing the screening effect. The filter plate 6 slides periodically in the box body 1 by the continuous driving of the driving assembly 10, realizing continuous screening of the fly ash.

[0026] By adjusting the inclination angle of the box body 1, the screening efficiency can be improved, and the accumulation and blocking of the particles can be reduced according to the particle size, humidity, and viscosity of the fly ash. At the same time, by the sliding of the filter plate 6, the fly ash particles are subjected to more uniform and sufficient screening force during the screening process, thereby improving the uniformity and accuracy of the screening.

[0027] Reference Figure 1 As shown in some embodiments, a sliding hole 11 is formed in the top of the box body 1, a sliding rod 12 is fixedly arranged at the top of the filter plate 6 and connected with the sliding hole 11 in sliding fit, and an activity plate 13 is fixedly arranged at the top of the sliding rod 12. The driving assembly 10 includes a rotating frame 14, a rotating shaft 15, and a cam 16. The rotating frame 14 is fixedly connected with the top of the box body 1, the rotating shaft 15 is rotatably connected with the rotating shaft 15 and located between the activity plate 13 and the box body 1, and the cam 16 is coaxially fixedly connected with the rotating shaft 15.

[0028] Specifically, when the cam 16 rotates to its convex part contacts the movable plate 13, it will push the movable plate 13 to move upward. Since the movable plate 13 is fixedly connected with the slide rod 12, the slide rod 12 and the filter plate 6 will also move upward. When the cam 16 rotates to its non-convex part contacts or away from the movable plate 13, the movable plate 13, the slide rod 12 and the filter plate 6 will slide down under the action of gravity. Through the continuous rotation of the cam 16, the movable plate 13, the slide rod 12 and the filter plate 6 will periodically slide up and down in the box 1, so as to realize the screening of the fly ash.

[0029] In addition, by adjusting the shape and size of the cam 16, the stroke and force of the sliding of the filter plate 6 can be changed, further meeting the screening requirements of different fly ash.

[0030] Reference Figure 2 As shown in some specific embodiments, the driving assembly 10 further comprises a rotary motor 17, which is fixedly connected with the rotating frame 14, and the output end of the rotary motor 17 is coaxially fixedly connected with the rotating shaft 15.

[0031] Specifically, when the rotary motor 17 starts and rotates, its output end drives the rotating shaft 15 and the cam 16 to rotate synchronously. When the cam 16 rotates to its convex part contacts the movable plate 13, it will push the movable plate 13 to move upward. Since the movable plate 13 is fixedly connected with the slide rod 12, the slide rod 12 and the filter plate 6 will also move upward. When the cam 16 rotates to its non-convex part contacts or away from the movable plate 13, the movable plate 13, the slide rod 12 and the filter plate 6 will slide down under the action of gravity.

[0032] Through the continuous rotation of the rotary motor 17, the movable plate 13, the slide rod 12 and the filter plate 6 will periodically slide up and down in the box 1, so as to realize the screening of the fly ash. By adjusting the rotating speed of the rotary motor 17, the rotating speed of the rotating shaft 15 can be changed, so as to change the sliding frequency of the filter plate 6, and optimize the screening effect.

[0033] Reference Figure 1 and Figure 3 As shown in some specific embodiments, a collecting frame 19 is slidably arranged in the second discharge port 9, and a handle is fixedly arranged on the side of the collecting frame 19.

[0034] Specifically, the fly ash enters the box 1 from the feeding port 7 and falls on the filter plate 6 to be screened. The particles with smaller size, lower humidity or smaller viscosity will fall into the bottom of the box 1 through the screen holes of the filter plate 6 and accumulate in the collecting frame 19. When the fly ash accumulated in the collecting frame 19 reaches a certain amount, the operator can pull out the collecting frame 19 from the second discharging port 9 through the handle to collect and process the fly ash. At the same time, the filter plate 6 continues to slide up and down periodically with the driving assembly 10 to screen new fly ash particles to the collecting frame 19 or the first discharging port 8. The setting of the collecting frame 19 makes the collection of fine fly ash particles more convenient and fast, and the operator can easily pull out the collecting frame 19 from the second discharging port 9 through the handle.

[0035] It is apparent for a person skilled in the art that the present application is not limited to the details of the above exemplary embodiments but can be implemented in other embodiments without departing from the spirit or essential characteristics of the application. Consequently, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims.

Claims

1. A boiler feed screening mechanism, comprising a housing (1) and a base (2), characterized in that, Also includes: The box (1) is provided with a support frame (3), a telescopic rod (4), a hinge seat (5) and a filter plate (6). The two ends of the box (1) are respectively provided with a feed inlet (7) and a first discharge outlet (8). The bottom of the box (1) is provided with a second discharge outlet (9). One end of the support frame (3) is fixedly connected to the base (2). The other end of the support frame (3) is rotatably connected to one end of the box (1). The hinge seat (5) is slidably connected to the other end of the box (1). The telescopic rod (4) is fixedly set on the base (2). The telescopic end of the telescopic rod (4) is hinged to the hinge seat (5). The filter plate (6) is slidably connected to the box (1). The box (1) is provided with a drive assembly (10) for driving the filter plate (6) to slide.

2. The boiler feed screening mechanism according to claim 1, characterized in that, The top of the box (1) is provided with a sliding hole (11), and the top of the filter plate (6) is fixedly provided with a sliding rod (12) that is slidably connected to the sliding hole (11). The top of the sliding rod (12) is fixedly provided with a movable plate (13).

3. The boiler feed screening mechanism according to claim 2, characterized in that, The drive assembly (10) includes a rotating frame (14), a rotating shaft (15), and a cam (16). The rotating frame (14) is fixedly connected to the top of the housing (1). The rotating shaft (15) is rotatably connected to the rotating shaft (15) and is located between the movable plate (13) and the housing (1). The cam (16) is coaxially fixedly connected to the rotating shaft (15).

4. A boiler feed screening mechanism according to claim 3, characterized in that, The drive assembly (10) also includes a rotary motor (17), which is fixedly connected to the rotating frame (14), and the output end of the rotary motor (17) is fixedly connected to the rotating shaft (15) on the same axis.

5. A boiler feed screening mechanism according to claim 1, characterized in that, The bottom of the box (1) is provided with a sliding groove (18), the top of the hinge seat (5) is slidably connected to the sliding groove (18), and the bottom of the hinge seat (5) is hinged to the telescopic end of the telescopic rod (4).

6. A boiler feed screening mechanism according to claim 1, characterized in that, A collection frame (19) is slidably disposed inside the second discharge port (9), and a handle is fixedly disposed on the side of the collection frame (19).

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