Kiln anti-sticking sand dispenser and dispensing method

Abstract

The invention discloses a kiln anti-burning sand dispenser and a dispensing method, the kiln anti-burning sand dispenser comprises an outer sleeve box, the bottom of the outer sleeve box is provided with a plurality of groups of first through holes distributed in a rectangular array; the inner sleeve box is arranged in the outer sleeve box in a sliding mode in the extending direction of the outer sleeve box, second through holes corresponding to the first through holes in number and position in a one-to-one mode are formed in the bottom of the inner sleeve box, the inner sleeve box is controlled to move, and communication or disconnection of the first through holes and the second through holes is achieved; switching of two key communication states is achieved by pushing the inner sleeve box to move, wherein on one hand, the anti-sticking sand is evenly put on the multiple sets of bearing columns, and in other words, the second through hole communicates with the first through hole; and secondly, continuous feeding of the storage box is cut off, namely the discharging pipe is disconnected from the second through holes, meanwhile, due to the fact that the capacities of the multiple sets of second through holes are consistent, quantitative discharging can be achieved, and precise control over throwing of the anti-burning sand is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of sintering process, and in particular to a kiln sand-isolating device and a sand-isolating method. Background Art

[0002] In the sintering process, load-bearing columns are usually used to support sintering equipment, carry materials, and withstand various stresses in high temperature environments. However, in this process, the surface of the load-bearing columns is prone to material adhesion. By forming a uniform layer of isolation sand covering on the top of the load-bearing columns, in this process, the surface of the neatly arranged load-bearing columns is evenly sprinkled with isolation sand based on the principle of gravity, which can prevent the load-bearing columns from adhering to the upper and lower load-bearing plates during the sintering process and damaging the load-bearing plates.

[0003] The traditional method is to use manual spreading, which makes the isolation sand on each group of load-bearing columns uneven and has low efficiency. Therefore, a kiln isolation sand dispenser and a dispensing method are proposed to solve this problem. Summary of the invention

[0004] The present invention aims at the deficiencies in the prior art and provides the following technical solutions:

[0005] The kiln anti-sticking sand feeder includes:

[0006] A coat box, wherein a plurality of through holes distributed in a rectangular array are provided at the bottom of the coat box;

[0007] The inner sleeve is slidably arranged inside the outer sleeve along the extension direction of the outer sleeve, and the bottom of the inner sleeve is provided with through holes 2 corresponding in number and position to the through holes 1, so as to control the movement of the inner sleeve to realize the connection or disconnection between the through holes 1 and the through holes 2;

[0008] A storage box is arranged on the top of the outer sleeve box, and the bottom of the storage box is connected to and provided with multiple groups of feed pipes corresponding to the number and position of the through holes 2. The bottom of the feed pipe is slidably connected to the bottom of the inner wall of the inner sleeve box to control the movement of the inner sleeve box to achieve connection or disconnection between the feed pipe and the through hole 1.

[0009] As an improvement of the above technical solution, one end of the inner box is fixedly connected to a movable rod, and the end of the movable rod away from the inner box passes through the side wall of the outer box and extends to the outside of the outer box. A spring is wound on the surface of the movable rod and located between the inner box and the outer box.

[0010] As an improvement of the above technical solution, a fixed cylinder is provided on the top of the storage box, and a moving rod is movably inserted on the fixed cylinder, and the bottom of the moving rod passes through the bottom of the fixed cylinder and the top of the storage box in sequence and extends into the storage box, and the end of the moving rod extending to the inside of the storage box is connected to a distribution plate, and the bottom of the distribution plate is connected to multiple groups of sealing rods corresponding to the number and position of the discharge pipes, and the sealing rods are adapted to the discharge pipes, and a piston is provided in the fixed cylinder and on the surface of the moving rod, and a spring 2 is wound on the surface of the moving rod and between the piston and the top of the inner wall of the fixed cylinder.

[0011] As an improvement of the above technical solution, an insert rod is integrally formed at the bottom of the sealing rod, and the diameter of the insert rod is smaller than the diameter of the sealing rod.

[0012] As an improvement of the above technical solution, the side wall of the storage box is fixedly sleeved with an air storage box, the side wall of the fixed cylinder is connected to an air outlet pipe at the bottom of the piston, the air outlet end of the air outlet pipe is connected to the air storage box, the side wall of the fixed cylinder is connected to an air inlet pipe at a side away from the air outlet pipe, a connecting pipe is connected between the air storage box and the moving rod, and a valve is provided on the connecting pipe.

[0013] As an improvement of the above technical solution, a pressure relief valve is provided on the air storage tank.

[0014] The method for placing the sand in a kiln by using the above-mentioned sand in a kiln is characterized in that it specifically comprises the following steps:

[0015] S1: In the initial state, the through hole 2 at the bottom of the inner box and the through hole 1 at the bottom of the outer box are disconnected, and the feed pipe and the through hole 2 are connected, and the isolation sand in the storage box enters the through hole 2 through the feed pipe, so that the isolation sand fills the through hole 2;

[0016] S2: When the anti-sticking sand needs to be dropped in, the inner box is controlled to move along the extension direction of the outer box. As the inner box moves, the through hole 2 at its bottom is gradually aligned and connected with the through hole 1 at the bottom of the outer box. At the same time, as the inner box moves, the feed pipe is gradually disconnected from the through hole 2 and the feeding is stopped. After the through hole 2 is connected with the through hole 1, the anti-sticking sand stored in the through hole 2 is dropped through the through hole 1 under the action of gravity.

[0017] Beneficial effects of the present invention:

[0018] By pushing the inner box to move, two key connection status switches are achieved: one is to evenly place the isolation sand on multiple groups of load-bearing columns, that is, through hole two is connected with through hole one; the other is to cut off the continuous supply of the storage box, that is, the discharge pipe is disconnected from through hole two. At the same time, since the capacity of multiple groups of through hole twos is consistent, quantitative discharge can be achieved, thereby realizing precise control of the placement of isolation sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the connection structure between the outer casing and the inner casing of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the storage box of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection structure between the distribution plate and the sealing rod of the present invention;

[0023] Figure 5 This is a top view of the outer sleeve box connected to the inner sleeve box of the present invention.

[0024] Figure numerals: 10, outer sleeve box; 11, through hole one; 20, inner sleeve box; 21, through hole two; 22, movable rod; 23, spring one; 30, storage box; 301, feed pipe; 31, air inlet pipe; 32, fixed cylinder; 33, movable rod; 331, distribution plate; 332, sealing rod; 333, insert rod; 34, piston; 35, spring two; 36, air outlet pipe; 37, air storage box; 38, pressure relief valve; 39, connecting pipe. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] Embodiment 1

[0027] The kiln anti-sticking sand feeder includes:

[0028] A jacket box 10, wherein the bottom of the jacket box 10 is provided with a plurality of through holes 11 distributed in a rectangular array;

[0029] The inner sleeve 20 is slidably disposed inside the outer sleeve 10 along the extension direction of the outer sleeve 10. The bottom of the inner sleeve 20 is provided with second through holes 21 corresponding in number and position to the first through holes 11. The movement of the inner sleeve 20 is controlled to connect or disconnect the first through holes 11 with the second through holes 21.

[0030] The storage box 30 is arranged on the top of the outer box 10, and the bottom of the storage box 30 is connected to multiple groups of feed pipes 301 corresponding to the number and position of the through holes 21. The bottom of the feed pipe 301 is slidably connected to the bottom of the inner wall of the inner box 20 to control the movement of the inner box 20 to achieve the connection or disconnection of the feed pipe 301 with the through hole 11.

[0031] In the initial state, the through hole 21 at the bottom of the inner sleeve 20 is disconnected from the through hole 11 at the bottom of the outer sleeve 10, and the feed pipe 301 is connected to the through hole 21. The storage box 30 stores the isolation sand in advance, and the isolation sand in the storage box 30 enters the through hole 21 through the feed pipe 301, so that the isolation sand fills the through hole 21. When the isolation sand needs to be put in, the inner sleeve 20 is controlled to move along the extension direction of the outer sleeve 10. As the inner sleeve 20 moves, the through hole 21 at its bottom is gradually aligned and connected with the through hole 11 at the bottom of the outer sleeve 10. At the same time, as the inner sleeve 20 moves, the feed pipe 301 is gradually disconnected from the through hole 21, and the feeding is stopped. When the through hole 21 is connected with the through hole 11, the isolation sand material is under the action of gravity. Next, the isolation sand stored in through hole 21 is released through through hole 1, and can be evenly released on multiple groups of load-bearing columns, and because the connection between the feed pipe 301 and through hole 21 has been cut off when the release is started, the amount of isolation sand released at this time mainly depends on the volume of the isolation sand pre-filled in through hole 21, and quantitative release can be achieved. When the release time is over, the inner sleeve 20 is driven to move in the opposite direction to disconnect through hole 21 and through hole 1 11 again, and the release of the isolation sand is stopped. At this time, the feed pipe 301 will gradually resume connection with through hole 21, and the isolation sand in the storage box 30 can start to fill through hole 21 again, preparing for the next release. The entire dispenser realizes precise control and cyclic preparation of the release of the isolation sand through the reciprocating movement of the inner sleeve 20.

[0032] In one embodiment, one end of the inner sleeve 20 is fixedly connected to a movable rod 22, and the end of the movable rod 22 away from the inner sleeve 20 passes through the side wall of the outer sleeve 10 and extends to the outside of the outer sleeve 10. The surface of the movable rod 22 is located between the inner sleeve 20 and the outer sleeve 10 and is wound with a spring 23. In the initial state, the spring 23 is in a naturally extended state, so that the inner sleeve 20 is maintained in a relatively stable initial position, that is, to ensure that the through hole 21 and the through hole 11 are in a disconnected state, and at the same time, the feed tube 30 1 is kept in communication with the through hole 21, so that the isolation sand in the storage box 30 can fill the through hole 21. When the isolation sand needs to be put in, the movable rod 22 is pulled to make the movable rod 22 drive the inner sleeve box 20 to move, and the spring 1 23 is squeezed to align the through hole 11 with the through hole 21. When the isolation sand is put in once and the external force driving the inner sleeve box 20 to move is withdrawn, the elastic force of the spring 1 23 will cause the inner sleeve box 20 to return to the initial position, realizing the automatic reset function, preparing for the next putting in, and ensuring that the dispenser can work stably in a cycle.

[0033] In one embodiment, a fixed cylinder 32 is provided on the top of the storage box 30, and a moving rod 33 is movably inserted on the fixed cylinder 32. The bottom of the moving rod 33 passes through the bottom of the fixed cylinder 32 and the top of the storage box 30 in sequence and extends into the storage box 30. One end of the moving rod 33 extending into the storage box 30 is connected to a distribution plate 331, and a plurality of sealing rods 332 corresponding to the number and position of the discharge pipes 301 are connected to the bottom of the distribution plate 331. The sealing rods 332 are adapted to the discharge pipes 301. A piston 34 is fixedly provided in the fixed cylinder 32 and on the surface of the moving rod 33. A spring 35 is wound around the surface of the moving rod 33 and between the piston 34 and the top of the inner wall of the fixed cylinder 32.

[0034] Specifically, when there is no external force interference, the spring 2 35 is in a naturally extended state. At this time, the sealing rod 332 is inserted into the discharge pipe 301 to seal the discharge pipe 301 to prevent the isolation sand in the storage box 30 from falling through the discharge pipe 301 when it is not needed. When the isolation sand needs to be put in, that is, to start the discharge process, the moving rod 33 is pulled upward to make the moving rod 33 overcome the elastic force of the spring 2 35 and move upward. As the moving rod 33 moves upward, the sealing rod 332 will gradually be withdrawn from the discharge pipe 301, thereby opening the discharge pipe 301, so that the isolation sand in the storage box 30 can fall through the discharge pipe 301 under the action of gravity. Flow, at the same time, the distribution plate 331 and the sealing rod 332 can stir the isolation sand in the storage box 30 to a certain extent during the movement, helping the isolation sand that may have been piled up or compacted to become looser, further ensuring that the material discharge process is smoother and more uniform. When the isolation sand is discharged once and the external force is removed, the elastic force of the spring 2 35 will come into play, pushing the piston 34 to move, thereby driving the moving rod 33 to move downward and reset, and the sealing rod 332 will be reinserted into the discharge pipe 301, sealing the discharge pipe 301 again to prevent the isolation sand from continuing to fall, so that the entire storage box 30 returns to the initial discharge closed state, ready for the next discharge.

[0035] In one embodiment, the bottom of the sealing rod 332 is integrally formed with an insertion rod 333, and the diameter of the insertion rod 333 is smaller than the diameter of the sealing rod 332. When the sealing rod 332 is inserted into the discharge pipe 301, the insertion rod 333 can be more easily inserted into the isolation sand due to its smaller diameter. If the isolation sand is slightly agglomerated after being stored for a long time or being exposed to moisture, the insertion rod 333 can be inserted into the agglomerated part like a needle to destroy it, thereby playing a role in clearing the blockage and ensuring that the material can be discharged smoothly.

[0036] In one embodiment, the side wall of the storage box 30 is fixedly sleeved with an air storage box 37, the side wall of the fixed cylinder 32 is connected to an air outlet pipe 36 at the bottom of the piston 34, the air outlet end of the air outlet pipe 36 is connected to the air storage box 37, the side wall of the fixed cylinder 32 is connected to an air inlet pipe 31 away from the air outlet pipe 36, a connecting pipe 39 is connected between the air storage box 37 and the moving rod 33, a valve is provided on the connecting pipe 39, and both the air outlet pipe 36 and the air inlet pipe 31 are provided with a one-way valve;

[0037] Specifically, the moving rod 33, the distribution plate 331, the sealing rod 332 and the inserting rod 333 all have accommodating cavities and are in a mutually connected state. When material needs to be added, the moving rod 33 and the piston 34 will be pulled to move in the fixed cylinder 32 along the extension direction of the fixed cylinder 32. When the piston 34 moves in the direction away from the air outlet pipe 36, the volume of the space below the piston 34 in the fixed cylinder 32 gradually increases, and the pressure decreases accordingly, forming a negative pressure state. At this time, the one-way valve on the air inlet pipe 31 is opened, and the external gas enters the fixed cylinder 32 through the air inlet pipe 31. When the piston 34 moves in the direction close to the air outlet pipe 36, the one-way valve on the air inlet pipe 31 is closed. When the moving rod 33 moves up and down, the air is compressed and enters the air outlet pipe 36, and is transported to the air storage box 37 by the air outlet pipe 36. Therefore, in the process of the moving rod 33 moving up and down, the air can be stored in the air storage box 37. When the through hole 21 and the through hole 11 are blocked, the valve on the connecting pipe 39 is opened, and the gas pre-stored in the air storage box 37 flows into the moving rod 33, the distribution plate 331, the sealing rod 332 and the plug rod 333 in turn through the connecting pipe 39, and is finally ejected from the bottom of the plug rod 333. With the help of this air pressure, additional pressure can be applied to the isolation sand blocked near the through hole 21 and the through hole 11, so as to break the blockage and restore the normal material discharge channel.

[0038] In one embodiment, a pressure relief valve 38 is provided on the air storage tank 37, which can help maintain the relative stability of the pressure in the air storage tank 37. When the pressure in the air storage tank 37 is slightly higher than the normal working pressure, it will discharge an appropriate amount of gas to return the pressure to a suitable range, thereby ensuring that the air pressure environment in the air storage tank 37 is always in a state that is conducive to the normal operation of the equipment.

[0039] Embodiment 2

[0040] The method for placing the sand in the kiln by using the sand in the kiln according to the first embodiment specifically comprises the following steps:

[0041] S1: In the initial state, the second through hole 21 at the bottom of the inner box 20 and the first through hole 11 at the bottom of the outer box 10 are disconnected, and the feed pipe 301 is connected to the second through hole 21, and the isolation sand in the storage box 30 enters the second through hole 21 through the feed pipe 301, so that the isolation sand fills the second through hole 21;

[0042] S2: When the isolation sand needs to be dropped in, the inner box 20 is controlled to move along the extension direction of the outer box 10. As the inner box 20 moves, the through hole 21 at its bottom is gradually aligned and connected with the through hole 1 11 at the bottom of the outer box 10. At the same time, as the inner box 20 moves, the feed pipe 301 is gradually disconnected from the through hole 2 and the feeding is stopped. After the through hole 2 is connected with the through hole 1, the isolation sand stored in the through hole 2 is dropped through the through hole 1 under the action of gravity, and can be evenly dropped on multiple groups of load-bearing columns.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them.

Claims

1. The kiln sand separator is characterized by: include: A jacket box (10), wherein the bottom of the jacket box (10) is provided with a plurality of groups of through holes (11) distributed in a rectangular array; The inner sleeve (20) is slidably arranged inside the outer sleeve (10) along the extension direction of the outer sleeve (10), and the bottom of the inner sleeve (20) is provided with second through holes (21) corresponding in number and position to the first through holes (11), so that the movement of the inner sleeve (20) is controlled to realize the connection or disconnection between the first through holes (11) and the second through holes (21); A storage box (30) is arranged on the top of the outer casing (10); the bottom of the storage box (30) is connected to and provided with a plurality of feed pipes (301) corresponding in number and position to the second through hole (21); the bottom of the feed pipe (301) is slidably connected to the bottom of the inner wall of the inner casing (20) to control the movement of the inner casing (20) so as to connect or disconnect the feed pipe (301) with the first through hole (11).

2. The kiln sand-isolating device according to claim 1, characterized in that: One end of the inner box (20) is fixedly connected to a movable rod (22), and one end of the movable rod (22) away from the inner box (20) passes through the side wall of the outer box (10) and extends to the outside of the outer box (10), and a spring (23) is wound on the surface of the movable rod (22) and located between the inner box (20) and the outer box (10).

3. The kiln sand-isolating device according to claim 2 is characterized in that: A fixed cylinder (32) is arranged at the top of the storage box (30), and a moving rod (33) is movably inserted on the fixed cylinder (32), and the bottom of the moving rod (33) passes through the bottom of the fixed cylinder (32) and the top of the storage box (30) in sequence and extends into the storage box (30), and one end of the moving rod (33) extending into the storage box (30) is connected to a distribution plate (331), and the bottom of the distribution plate (331) is connected to multiple groups of sealing rods (332) corresponding to the number and position of the discharge pipes (301), and the sealing rods (332) are adapted to the discharge pipes (301), and a piston (34) is arranged in the fixed cylinder (32) and on the surface of the moving rod (33), and a spring 2 (35) is wound on the surface of the moving rod (33) and between the piston (34) and the top of the inner wall of the fixed cylinder (32).

4. The kiln sand-isolating device according to claim 3 is characterized in that: The bottom of the sealing rod (332) is integrally provided with an insertion rod (333), and the diameter of the insertion rod (333) is smaller than the diameter of the sealing rod (332).

5. The kiln sand-isolating device according to claim 1, characterized in that: The side wall of the storage box (30) is fixedly sleeved with an air storage box (37); the side wall of the fixed cylinder (32) is connected to an air outlet pipe (36) at the bottom of the piston (34); the air outlet end of the air outlet pipe (36) is connected to the air storage box (37); the side wall of the fixed cylinder (32) is connected to an air inlet pipe (31) at a side away from the air outlet pipe (36); a connecting pipe (39) is connected between the air storage box (37) and the moving rod (33); and a valve is provided on the connecting pipe (39).

6. The kiln sand-isolating device according to claim 1, characterized in that: The air storage box (37) is provided with a pressure relief valve (38).

7. A method for placing sand from a kiln using a sand placing device for preventing sticking in a kiln, using the sand placing device for preventing sticking in a kiln according to any one of claims 1 to 6, characterized in that: The specific steps include: S1: In the initial state, the second through hole (21) at the bottom of the inner box (20) and the first through hole (11) at the bottom of the outer box (10) are in a disconnected state, while the feed pipe (301) and the second through hole (21) are in a connected state, and the isolation sand in the storage box (30) enters the second through hole (21) through the feed pipe (301), so that the isolation sand fills the second through hole (21); S2: When it is necessary to add the anti-sticking sand, the inner sleeve box (20) is controlled to move along the extension direction of the outer sleeve box (10). As the inner sleeve box (20) moves, the second through hole (21) at the bottom thereof gradually aligns and connects with the first through hole (11) at the bottom of the outer sleeve box (10). At the same time, as the inner sleeve box (20) moves, the feed pipe (301) is gradually disconnected from the second through hole and the feed is stopped. When the second through hole (21) is connected with the first through hole (11), the anti-sticking sand stored in the second through hole (21) is added through the first through hole (11) under the action of gravity.

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