Yellow sand recycling device

Abstract

The utility model relates to the technical field of yellow sand circulation, and provides a yellow sand recycling device which comprises a screening box, a feeding port is formed in the top of the outer wall of one side of the screening box, a feeding pipe is connected to the outer portion of the feeding port in a threaded mode, and a feeding cover is arranged at the other end of the feeding pipe. Two sets of movable rails are arranged in the screening box in the vertical direction. According to the yellow sand recycling device, the pneumatic push rod can push the sieve plate to shake, then yellow sand on the sieve plate is sieved, iron nails can be sieved out, the filtered yellow sand can fall onto the sieve plate at the bottom, the sieve plate at the bottom can be used for conducting secondary filtration on the yellow sand, impurities in the yellow sand are further removed, and the yellow sand recycling device is convenient to use. The quality of the yellow sand can be improved, the yellow sand subjected to secondary filtering can fall into the collecting box, the lifting plate is pushed by the pneumatic lifting rod to be jacked up, the yellow sand can enter the discharging pipe and be discharged, the utilization rate of the yellow sand can be increased, and the yellow sand consumed when the fluidized bed furnace is used can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of yellow sand circulation, and specifically, to a device for recycling yellow sand. Background Art

[0002] During the use of a fluidized bed boiler, a certain amount of yellow sand needs to be added to form a fluidized bed. When the fluidized bed boiler burns biomass, a large number of iron nails are brought in by the biomass. After long-term use, a large amount of iron nails will accumulate. Since the weight of the iron nails is heavier than that of the sand and the blower cannot blow the iron nails up to make them boil, a large amount of accumulated iron nails will settle at the bottom of the furnace hearth and block the air holes, resulting in the flameout of the fluidized bed boiler and affecting production. Since the yellow sand after sorting has no difference from the newly purchased yellow sand, in order to save a large amount of yellow sand and reduce production costs, a recycling device is needed to screen out the yellow sand.

[0003] A Chinese patent discloses a fluidized bed boiler with the publication number CN218510875U, which states that "it includes a furnace body, a wind distribution plate and wind caps are arranged at the bottom of the furnace body, the wind caps are arranged on the wind distribution plate, an inclined downward coal chute is arranged on the left furnace wall of the furnace body, the coal chute includes a coal feeding pipe and a coal chute opening, the coal feeding pipe is arranged inclined downward, and the coal chute opening is arranged at the upper end of the coal feeding pipe; a check valve for preventing heat dissipation in the furnace body is arranged between the coal chute opening and the coal feeding pipe." However, the prior art cannot filter and screen the yellow sand used by the fluidized bed boiler and cannot be reused, resulting in a large amount of yellow sand being consumed during the use of the fluidized bed boiler and increasing the processing cost. Therefore, it is necessary to design a device for recycling yellow sand. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a device for recycling yellow sand, which solves the problem in the related art that the yellow sand used by the fluidized bed boiler cannot be filtered and screened during use, resulting in a large amount of yellow sand being consumed during the use of the fluidized bed boiler and increasing the processing cost.

[0005] The technical solution of the utility model is as follows:

[0006] A yellow sand recycling device includes a screening box. At the top of one outer wall of the screening box, a feed inlet is provided, and a feed pipe is screwed outside the feed inlet. The other end of the feed pipe is provided with a feed hood. Inside the screening box, two groups of movable tracks are arranged vertically. Each group of movable tracks is composed of a pushing track and a guiding track. The pushing track and the guiding track are distributed on both sides of the screening box, and the position of the pushing track is higher than that of the guiding track. A sieve plate is slidably installed on the pushing track, and the other end of the sieve plate is slidably installed in the guiding track. At both ends of the pushing track, pneumatic push rods are provided, and the telescopic ends of the pneumatic push rods are screwed and fixed to the outer wall of the sieve plate. At the inner bottom of the screening box, a collection box is provided, and a pushing groove is opened at the bottom inner wall of the collection box. One end of the pushing groove is provided with a lifting plate through installation. An air-driven lifting rod is arranged inside the pushing groove, and the telescopic end of the air-driven lifting rod is in fit connection with the bottom of the lifting plate. A discharge pipe is provided on the collection box.

[0007] Preferably, a discharge port is opened on the outer wall of the screening box, and the other end of the discharge pipe extends to the outside of the screening box through the discharge port.

[0008] Preferably, a guide block is welded at the bottom of the feed inlet, and the guide block is located inside the screening box. Side plates are welded on both outer walls of the guide block.

[0009] Preferably, a plurality of heating pipes are provided at the inner top of the feed hood.

[0010] Preferably, access openings are opened on both outer walls of the screening box, and baffles are hinged on the access openings. A sealing gasket is glued on the baffle, and the sealing gasket is snap-fitted and installed on the access opening.

[0011] Preferably, a dust suction pipe is provided at the top of the screening box, and a top plate is provided at the top of the dust suction pipe. A connecting pipe is provided at the center of the top plate. A suction machine is placed on the top end face of the screening box, and the other end of the connecting pipe is plugged and communicated with the suction machine.

[0012] Preferably, a sealing ring is glued on the bottom end face of the top plate, and the sealing ring is sleeved outside the dust suction pipe.

[0013] Preferably, a bracket is welded at the center of the bottom end face of the top plate, a sponge block is provided at the inner bottom of the bracket, and activated carbon is provided at the inner top of the bracket.

[0014] The beneficial effects of the present utility model:

[0015] The pneumatic push rod can be used to push the sieve plate to shake, thereby screening the yellow sand on the sieve plate, enabling iron nails to be screened out. The filtered yellow sand will fall onto the sieve plate at the bottom. The sieve plate at the bottom can be used to filter the yellow sand a second time, further removing impurities in the yellow sand, which is beneficial to improving the quality of the yellow sand. The yellow sand after the second filtration will fall into the collection box. By pushing the lifting plate up with the pneumatic lifting rod, the yellow sand can enter the discharge pipe. Under the guidance of the discharge pipe, the yellow sand can be discharged. This method can improve the utilization rate of the yellow sand, is beneficial to reducing the consumption of yellow sand during the use of the fluidized bed furnace, and reduces the processing cost.

[0016] The guide block can be used to guide the yellow sand onto the sieve plate at the top. The side plates can prevent the yellow sand from slipping out from both sides of the guide block. The heating pipe can be used to heat the yellow sand, which can increase the drying of the yellow sand and avoid the situation of adhesion. The air extractor and the connecting pipe can be used to generate negative pressure in the dust suction pipe, thereby sucking out the dust in the screening box. The sponge block and the activated carbon can filter out the dust in the gas, avoiding the pollution of the air environment when the gas is discharged. Brief Description of the Drawings

[0017] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0018] Figure 1 Isometric view of the internal structure of the present utility model;

[0019] Figure 2 Schematic diagram of the internal structure of the present utility model;

[0020] Figure 3 Schematic diagram of the overall structure of the present utility model;

[0021] Figure 4 Overall cross-sectional view of the present utility model;

[0022] Figure 5 Overall longitudinal sectional view of the present utility model;

[0023] In the figure: 1, screening box; 2, feed inlet; 3, feed pipe; 4, feed hood; 5, movable rail; 51, push rail; 52, guide rail; 6, sieve plate; 7, pneumatic push rod; 8, collection box; 9, push groove; 10, lifting plate; 11, pneumatic lifting rod; 12, discharge pipe; 13, discharge port; 14, guide block; 15, side plate; 16, heating pipe; 17, extraction port; 18, baffle; 19, sealing gasket; 20, dust suction pipe; 21, top plate; 22, connecting pipe; 23, air extractor; 24, sealing ring; 25, support; 26, sponge block; 27, activated carbon. Specific Embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0025] Such as Figures 1-5As shown in the figure, this embodiment proposes a yellow sand recycling device, including a screening box 1. At the top of one outer wall of the screening box 1, a feed inlet 2 is provided, and a feed pipe 3 is screwed outside the feed inlet 2. The other end of the feed pipe 3 is provided with a feed hood 4. Inside the screening box 1, two groups of movable tracks 5 are arranged vertically. Each group of movable tracks 5 is composed of a pushing track 51 and a guiding track 52. The pushing track 51 and the guiding track 52 are distributed on both sides of the screening box 1, and the position of the pushing track 51 is higher than that of the guiding track 52. A sieve plate 6 is slidably installed on the pushing track 51, and the other end of the sieve plate 6 is slidably installed in the guiding track 52. Pneumatic push rods 7 are provided at both ends of the pushing track 51, and the telescopic ends of the pneumatic push rods 7 are screwed and fixed to the outer wall of the sieve plate 6. At the inner bottom of the screening box 1, a collection box 8 is provided, and a pushing groove 9 is opened at the bottom inner wall of the collection box 8. One end of the pushing groove 9 is provided with a lifting plate 10 through installation. An air-driven lifting rod 11 is provided inside the pushing groove 9, and the telescopic end of the air-driven lifting rod 11 is in fit connection with the bottom of the lifting plate 10. A discharge pipe 12 is provided on the collection box 8. A discharge port 13 is opened on the outer wall of the screening box 1, and the other end of the discharge pipe 12 extends to the outside of the screening box 1 through the discharge port 13. A guide block 14 is welded at the bottom of the feed inlet 2, and the guide block 14 is located inside the screening box 1. Side plates 15 are welded on both outer walls of the guide block 14. The yellow sand can be guided onto the sieve plate 6 through the guide block 14, and the side plates 15 can prevent the yellow sand from sliding out from both sides of the guide block 14. Several heating pipes 16 are provided at the inner top of the feed hood 4. By using the heating pipes 16 to heat the yellow sand, the drying of the yellow sand can be increased, and the situation of adhesion can be avoided. Access openings 17 are opened on both outer walls of the screening box 1, and a baffle 18 is hinged on the access openings 17. A sealing gasket 19 is glued on the baffle 18, and the sealing gasket 19 is snap-fitted and installed on the access openings 17. By lifting the baffle 18, the screened sundries can be taken out from the access openings 17. The sealing gasket 19 can be used to increase the sealing performance between the access openings 17 and the baffle 18. A dust suction pipe 20 is provided at the top of the screening box 1, and a top plate 21 is provided at the top of the dust suction pipe 20. A connecting pipe 22 is provided at the center of the top plate 21. An air extractor 23 is placed on the top end face of the screening box 1, and the other end of the connecting pipe 22 is inserted and communicated with the air extractor 23. By using the air extractor 23 and the connecting pipe 22, negative pressure can be generated in the dust suction pipe 20, and then the dust in the screening box 1 can be sucked out. A sealing ring 24 is glued on the bottom end face of the top plate 21, and the sealing ring 24 is sleeved outside the dust suction pipe 20. A support 25 is welded at the center of the bottom end face of the top plate 21, and a sponge block 26 is provided at the inner bottom of the support 25. Activated carbon 27 is provided at the inner top of the support 25. The sponge block 26 and the activated carbon 27 can filter out the dust in the gas, and avoid polluting the air environment when the gas is discharged.

[0026] In this embodiment, during use, by fixing the feeding cover 4 to the discharge port of the fluidized bed furnace, yellow sand can enter the screening box 1 through the feeding pipe 3. The guiding block 14 can guide the yellow sand to the top sieve plate 6. The side plate 15 can prevent the yellow sand from slipping out from both sides of the guiding block 14. Heating the yellow sand with the heating pipe 16 can increase the drying of the yellow sand and avoid sticking. The pneumatic push rod 7 can push the sieve plate 6 to shake, thereby screening the yellow sand on the sieve plate 6 and screening out iron nails. By lifting the baffle 18, the screened sundries can be taken out from the material taking port 17. The filtered yellow sand will fall onto the bottom sieve plate 6. The bottom sieve plate 6 can be used to filter the yellow sand for the second time to remove sundries in the yellow sand. The yellow sand after the second filtration will fall into the collection box 8. By pushing the lifting plate 10 to rise with the pneumatic lifting rod 11, the yellow sand can enter the discharge pipe 12. Under the guidance of the discharge pipe 12, the yellow sand can be discharged. Using the air extractor 23 and the connecting pipe 22 can generate negative pressure in the dust suction pipe 20, thereby sucking out the dust in the screening box 1. The sponge block 26 and the activated carbon 27 can filter out the dust in the gas and avoid polluting the air environment when the gas is discharged.

[0027] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A yellow sand recycling device, characterized in that: The invention comprises a screening box (1), wherein a feed port (2) is provided at the top of an outer wall of one side of the screening box (1), and a feed pipe (3) is screwed to the outside of the feed port (2), and a feed cover (4) is provided at the other end of the feed pipe (3); two groups of movable rails (5) are arranged in a vertical direction inside the screening box (1), and each group of movable rails (5) is composed of a push rail (51) and a guide rail (52); the push rail (51) and the guide rail (52) are distributed on both sides of the screening box (1), and the push rail (51) is located higher than the guide rail (52); a screen plate (6) is slidably mounted on the push rail (51), and the screen plate The other end of (6) is slidably installed in the guide rail (52), and pneumatic push rods (7) are provided at both ends of the push rail (51), and the telescopic end of the pneumatic push rod (7) is screwed and fixed to the outer wall of the screen plate (6). A collecting box (8) is provided at the inner bottom of the screening box (1), and a pushing groove (9) is provided at the bottom of the inner wall of the collecting box (8), and a lifting plate (10) is installed at one end of the pushing groove (9), and a pneumatic lifting rod (11) is provided inside the pushing groove (9), and the telescopic end of the pneumatic lifting rod (11) is fitted and connected to the bottom of the lifting plate (10), and a discharge pipe (12) is provided on the collecting box (8).

2. A yellow sand recycling device according to claim 1, characterized in that: The outer wall of the screening box (1) is provided with a discharge port (13), and the other end of the discharge pipe (12) extends to the outside of the screening box (1) through the discharge port (13).

3. The yellow sand recycling device according to claim 1, characterized in that: A material guide block (14) is welded to the bottom of the feed port (2), and the material guide block (14) is located inside the screening box (1), and side panels (15) are welded to the outer walls on both sides of the material guide block (14).

4. The yellow sand recycling device according to claim 1, characterized in that: A plurality of heating tubes (16) are provided on the inner top of the feed cover (4).

5. The yellow sand recycling device according to claim 1, characterized in that: The outer walls of both sides of the screening box (1) are provided with a material taking opening (17), and a baffle (18) is hingedly connected to the material taking opening (17), a sealing gasket (19) is glued to the baffle (18), and the sealing gasket (19) is snap-fitted and installed on the material taking opening (17).

6. The yellow sand recycling device according to claim 1, characterized in that: A dust suction pipe (20) is provided on the top of the screening box (1), and a top plate (21) is provided on the top of the dust suction pipe (20). A connecting pipe (22) is provided in the center of the top plate (21). An air pump (23) is placed on the top end surface of the screening box (1), and the other end of the connecting pipe (22) is plugged and connected to the air pump (23).

7. The yellow sand recycling device according to claim 6, characterized in that: A sealing ring (24) is glued to the bottom end surface of the top plate (21), and the sealing ring (24) is sleeved on the outside of the dust suction pipe (20).

8. The yellow sand recycling device according to claim 6, characterized in that: A bracket (25) is welded at the center of the bottom end surface of the top plate (21), a sponge block (26) is provided at the inner bottom of the bracket (25), and activated carbon (27) is provided at the inner top of the bracket (25).

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