An automatic sand outlet device

Abstract

The utility model provides a kind of automatic sand outlet device, including sand outlet box for being connected in the end of deslagging tank, valve piece rotationally arranged in sand outlet box, and sand outlet hole is equipped on the end plate of the end of deslagging tank;Driving mechanism for rotating valve piece is equipped on sand outlet box, to make valve piece close or open sand outlet hole.The utility model sets sand outlet hole and rotating valve piece on the end plate of deslagging tank, when not needing sand, valve piece rotates to block sand outlet hole;Only when accumulated sand reaches a certain degree and needs to be discharged, valve piece rotates to open sand outlet hole, so that accumulated sand can be smoothly introduced into sand outlet box under the impetus of airflow;Not only the control of sanding is more convenient, but also avoids the valve piece that linearly moves to open and close needs more cabinet space.

Description

Technical Field

[0001] This utility model relates to the field of alumina powder conveying technology, and in particular to a sand discharge device. Background Technology

[0002] In practical engineering, during the conveying of alumina powder, air supply is used to fluidize the powder and achieve gravity flow. The powder is separated by a slag removal device, but the separation is not complete. Large sand particles accumulate at the end of the sand removal box. If the accumulated sand is not discharged in time, it will be carried by the airflow from the discharge port into subsequent processes, affecting product quality and production efficiency. The existing manual sand removal method is inefficient, requires machine shutdown, and seriously affects production efficiency; the sand removal effect is affected by the operator's skill level and working condition, resulting in unstable quality; at the same time, it poses certain personal safety risks and leads to increased labor costs, increasing the long-term operating costs of enterprises.

[0003] Based on this, the present invention provides an automatic sand discharge device that can automatically discharge the sand accumulated at the end of the sand removal box, ensuring the fluidity and stability of the powder airflow in the sand removal box, directly improving product quality, reducing labor costs and risks. The automatic sand discharge device has a simple structure, and is easy and convenient to manufacture, install and maintain, with low operating costs, and has high value in practical engineering applications.

[0004] Chinese utility model patent application CN211947251U, published on November 17, 2020, discloses a slag removal box for a fresh alumina conveying chute. The box includes a body with an inlet on one side of the top and an outlet on the opposite side of the bottom. Inside the box, a screen is fixed perpendicularly to the side wall. A slag removal port is located on the side wall near the outlet, above the screen. A cover plate is located on the side of the slag removal port outside the box. Oppositely arranged L-shaped slide rails are fixed to the outer walls of the box on both sides of the cover plate. The two ends of the cover plate slide vertically within the two slide rails. Vertical rods are fixed to the top of the cover plate on both sides, and a horizontal rod is fixed between the tops of the two vertical rods. A sleeve fixed to the top of the box is fitted onto each vertical rod. The box also includes a slag collection box with an inlet on the top of its side wall. Slider blocks matching the slide rails are fixed to the outer walls of the slag collection box on both sides of the inlet. However, the overall movement of the slag collection box on the slag removal box is not only quite troublesome, but the moving slag collection box is also inconvenient to connect to subsequent collection or treatment devices; and since it is manually controlled to slide, it cannot achieve automatic sand discharge. Summary of the Invention

[0005] To address the aforementioned technical problems, this utility model proposes an automatic sand discharge device to solve the problem that the overall movement of the slag collection structure for conveying and discharging alumina powder is cumbersome in the prior art.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows: An automatic sand discharge device includes a sand discharge box connected to the end of a slag removal box, a valve plate rotatably disposed within the sand discharge box, and a sand discharge hole provided on the end plate at the end of the slag removal box. The sand discharge box is equipped with a drive mechanism for rotating the valve plate, causing the valve plate to close or open the sand discharge hole. This invention, by providing a sand discharge hole and a rotating valve plate on the end plate of the slag removal box, allows the valve plate to rotate and block the sand discharge hole when sand discharge is not required. Only when accumulated sand reaches a certain level and sand discharge is needed, the valve plate rotates to open the sand discharge hole, allowing the accumulated sand to smoothly enter the sand discharge box under the propulsion of airflow. This not only makes sand discharge control more convenient but also avoids the need for more box space required by a valve plate that moves linearly to open and close.

[0007] Furthermore, the sand discharge box is also equipped with a valve seat that is fixed to the end plate, and the valve seat has a through hole aligned with the sand discharge hole; the valve plate is fitted to the valve seat and is rotatably connected to the valve seat.

[0008] Furthermore, double-ended bolts are installed on the end plate, valve seat, and valve plate, and the valve plate is rotatably connected to the double-ended bolts; and nuts are connected to both ends of the double-ended bolts.

[0009] Furthermore, a compression spring and a compression spring cover are fitted onto the double-ended bolt, and the compression spring and compression spring cover are located between the valve plate and the nut at the inner end; and the valve plate is provided with a compression groove that cooperates with the end of the compression spring.

[0010] Furthermore, the valve plate is provided with small holes that are aligned with or offset from the through hole.

[0011] Furthermore, the end plate is provided with several pairs of sand outlet holes, and the valve seat and valve plate are provided with several groups, each group of valve seat and valve plate is provided with a pair of through holes and a pair of small holes.

[0012] Furthermore, the driving mechanism includes a cylinder disposed on one side of the sand outlet box, the telescopic end of the cylinder extending into the sand outlet box and connected to the valve plate through a hinged connection assembly.

[0013] Furthermore, the articulated connection assembly includes a connecting plate hinged to the telescopic end of the cylinder and several connecting plates hinged to the connecting plate, with a valve plate connected to the other end of each connecting plate.

[0014] Furthermore, a cover plate can be detachably connected to the side of the end plate of the sand discharge box away from the slag removal box.

[0015] Furthermore, a flexible sand discharge connector is connected to the lower end of the sand discharge box.

[0016] The beneficial effects of this utility model are: 1. This utility model provides several sand outlet holes on the end plate of the slag removal box, which facilitates the relatively uniform discharge of accumulated sand under the action of airflow. 2. This utility model uses a rotating valve plate with a small hole that can coincide with the sand outlet hole of the slag removal box end plate. When sand is not needed, the valve plate rotates to block the sand outlet hole; only when the accumulated sand reaches a certain level and sand needs to be discharged, the valve plate rotates to make the small hole coincide with the sand outlet hole, so that the accumulated sand will be pushed into the sand discharge box smoothly by the airflow. 3. This utility model uses a rotating valve plate to open and close the sand outlet hole, avoiding the need for more housing space for a valve plate that moves linearly to open and close. 4. This utility model achieves automatic sand discharge by using a cylinder to drive the valve plate to rotate; 5. This utility model uses a sand discharge box to prevent the blown sand from flying around; 6. This utility model achieves better sealing of the small hole by setting a compression spring and a compression spring cover to press the valve plate and valve seat. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front sectional view of the present invention. Figure 3 This is a side sectional view of the present invention. Figure 4 This is a schematic diagram of the end plate structure of the slag removal box of this utility model.

[0019] In the diagram: 1. Cylinder, 2. Connecting plate, 3. Slag removal box end plate, 31. Sand outlet hole, 4. Rotary valve plate, 5. Rotary valve seat, 6. Sand outlet box body, 7. Sand outlet flexible connection, 8. Cover plate, 9. Connecting plate, 11. Thrust ball bearing, 12. Double-ended bolt, 13. Compression spring, 14. Compression spring cover. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1 As shown in Embodiment 1 of this utility model, an automatic sand discharge device is connected to the end of a slag removal box and is used to collect discharged large sand particles. The automatic sand discharge device includes a sand discharge box 6 and a valve plate 4 rotatably disposed within the sand discharge box 6. The sand discharge box 6 is connected to an end plate 3 at the end of the slag removal box. The end plate 3 at the end of the slag removal box is provided with a sand discharge hole 31. The sand discharge box 6 is provided with a driving mechanism for rotating the valve plate 4, so that the valve plate 4 closes or opens the sand discharge hole 31. That is, when the valve plate 4 rotates a certain angle, it blocks the sand discharge hole 31, preventing large sand particles from entering the sand discharge box from the slag removal box; when the valve plate 4 rotates a certain angle and opens the sand discharge hole 31, large sand particles can enter the sand discharge box 6 through the sand discharge hole 31.

[0022] Furthermore, such as Figure 2 and Figure 3 As shown, the sand discharge box 6 is also equipped with a valve seat 5 fixed to the end plate 3. The valve seat 5 has a through hole aligned with the sand discharge hole 31. The valve plate 4 is fitted to the valve seat 5 and rotatably connected to the valve seat 5. The rotation of the valve plate 4 is used to block or open the through hole, thereby achieving the purpose of intermittent sand discharge.

[0023] Example 2 differs from Example 1 in that, as Figure 2 As shown, in this embodiment, the valve plate 4 and the valve seat 5 are coaxially arranged, and the valve plate 4 rotates around the axis. The valve plate 4 has small holes aligned with or offset from the through hole, so that when the valve plate 4 rotates to the point where the small hole aligns with the through hole, large sand particles pass through the sand outlet hole 31, the through hole, and the small hole for sand discharge. This allows the through hole to be opened for sand discharge with only a small rotation angle of the valve plate. The valve seat 5 is fixed to the outside of the end plate 3 to ensure the sealing between the valve plate 4 and the end plate 3. In a preferred embodiment, packing is provided between the valve seat 5 and the end plate 3 to enhance the sealing between them, such as... Figure 3 As shown.

[0024] Furthermore, such as Figure 3 As shown, double-ended bolts 12 are installed on the end plate 3, valve seat 5, and valve plate 4, and nuts are connected to both ends of the double-ended bolts 12. The valve plate 4 is rotatably connected to the double-ended bolts 12 via bearings, so that the valve plate 4 can rotate relative to the valve seat 5.

[0025] Example 3 differs from Example 2 in that, as Figure 3 As shown, a compression spring 13 and a compression spring cover 14 are fitted onto the double-ended bolt 12. The compression spring 13 and the compression spring cover 14 are clamped between the valve plate 4 and the nut located at the inner end of the double-ended bolt 12; and the valve plate 4 has a pressure groove that mates with the end of the compression spring 13. The compression spring 13 and the compression spring cover 14 allow the valve plate 4 to elastically press against the valve seat 5, thereby maintaining the sealing between the valve plate 4 and the valve seat 5. Furthermore, a thrust ball bearing 11 is provided between the compression spring cover 14 and the nut at the inner end, increasing the flexibility of the valve plate 4's rotation.

[0026] Example 4 differs from Example 2 in that, as Figure 2 As shown, the end plate 3 has several pairs of sand outlet holes 31, and the valve seat 5 and valve plate 4 have several sets, each set of valve seat 5 and valve plate 4 having a pair of through holes and a pair of small holes. In this embodiment, the end plate 3 has two pairs, totaling four sand outlet holes 31. Therefore, there are two sets of valve plates and valve seats, namely two valve plates and two valve seats, with one valve plate and one valve seat forming a set. Each valve seat 5 has two symmetrical through holes, each aligned with a pair of sand outlet holes 31. The valve plate 4 has two symmetrical small holes. In this embodiment, the small holes and through holes are similar or the same size and are both circular. When the valve plate rotates to a certain angle, the small holes and through holes are completely connected; at certain angles, they may also be partially connected. When sand discharge is not required, the valve plate 4 rotates to a position that completely blocks the through holes.

[0027] Example 5 differs from Example 4 in that, as Figure 2 As shown, the driving mechanism includes a cylinder 1 disposed on one side of the sand outlet box 6. The telescopic end of the cylinder 1 is inserted into the sand outlet box 6 and connected to the valve plate 4 through a hinged connection assembly.

[0028] Furthermore, such as Figure 2 As shown, the hinged connection assembly includes a connecting plate 2 hinged to the telescopic end of the cylinder 1 and several connecting plates 9 hinged to the connecting plate 2. Each connecting plate 9 has a valve plate 4 connected to its other end. In this embodiment, because there are two valve plates 4, there are two connecting plates 9, each connecting plate 9 connected to one valve plate 4. The telescopic movement of the cylinder 1 causes the connecting plate 2 and connecting plates 9 to swing, thereby causing the valve plates 4 to rotate.

[0029] In addition, in a preferred embodiment, the cylinder 1 is connected to a time relay via a solenoid valve, and the cylinder operates at timed intervals to automatically discharge sand.

[0030] Example 6 differs from Example 1 in that, as Figure 1 As shown, a cover plate 8 is detachably connected to the side of the end plate 3 of the sand discharge box 6 away from the slag removal box, which facilitates disassembly and maintenance.

[0031] Example 7 differs from Example 1 in that, as Figure 1 As shown, the lower end of the sand discharge box 6 is connected to a flexible sand discharge connection 7, which facilitates connection to the vibrating screen.

[0032] Example 8: The working process of this utility model is as follows: Normal alumina powder in the slag removal box goes to the subsequent process from the discharge port, while large sand particles accumulate at the end of the slag removal box. When a certain amount of sand accumulates, the cylinder 1 of the automatic sand discharge device operates, driving the rotary valve plate 4 to rotate. The small hole on the rotary valve plate 4 coincides with the through hole on the rotary valve seat. Driven by the airflow, the large sand particles are discharged from the slag removal box into the sand discharge box 6, and then enter the vibrating screen through the sand discharge flexible connection 7. After the sand discharge is completed, the cylinder returns, driving the rotary valve plate to rotate. The time relay controls the extension and retraction of the cylinder according to the energization and de-energization of the timer control solenoid valve. The accumulation of large sand particles can be directly observed through the observation port set on the side wall at the end of the slag removal box. When a large amount of sand accumulates, the cylinder can also be manually controlled to perform the sand discharge operation.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions of some or all of the technical features therein, within the spirit and principles of the present utility model, shall not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model, and shall all be included within the protection scope of the present utility model.

Claims

1. An automatic sand discharge device, characterized in that, It includes a sand discharge box (6) for connecting to the end of the slag removal box, a valve plate (4) rotatably installed in the sand discharge box (6), and a sand discharge hole (31) on the end plate (3) at the end of the slag removal box; the sand discharge box (6) is provided with a drive mechanism for rotating the valve plate (4) so ​​that the valve plate (4) closes or opens the sand discharge hole (31).

2. The automatic sand discharge device according to claim 1, characterized in that, The sand discharge box (6) is also provided with a valve seat (5) fixed to the end plate (3), and the valve seat (5) is provided with a through hole aligned with the sand discharge hole (31); the valve plate (4) is fitted to the valve seat (5) and is rotatably connected to the valve seat (5).

3. The automatic sand discharge device according to claim 2, characterized in that, Double-ended bolts (12) are installed on the end plate (3), valve seat (5) and valve plate (4), and the valve plate (4) is rotatably connected to the double-ended bolts (12); and nuts are connected to both ends of the double-ended bolts (12).

4. The automatic sand discharge device according to claim 3, characterized in that, The double-ended bolt (12) is fitted with a compression spring (13) and a compression spring cover (14), which are located between the valve plate (4) and the nut at the inner end; and the valve plate (4) is provided with a compression groove that cooperates with the end of the compression spring (13).

5. The automatic sand discharge device according to any one of claims 2 to 4, characterized in that, The valve plate (4) is provided with small holes that are aligned with or offset from the through hole.

6. The automatic sand discharge device according to claim 5, characterized in that, The end plate (3) is provided with several pairs of sand outlet holes (31), and the valve seat (5) and valve plate (4) are provided with several groups. Each group of valve seat (5) and valve plate (4) is provided with a pair of through holes and a pair of small holes.

7. The automatic sand discharge device according to any one of claims 1 to 4 and 6, characterized in that, The driving mechanism includes a cylinder (1) disposed on one side of the sand outlet box (6). The telescopic end of the cylinder (1) is inserted into the sand outlet box (6) and connected to the valve plate (4) through a hinged connection assembly.

8. The automatic sand discharge device according to claim 7, characterized in that, The articulated connection assembly includes a connecting plate (2) hinged to the telescopic end of the cylinder (1) and several connecting plates (9) hinged on the connecting plate (2), with a valve plate (4) connected to the other end of each connecting plate (9).

9. The automatic sand discharge device according to any one of claims 1 to 4, 6 and 8, characterized in that, A cover plate (8) can be detachably connected to the side of the end plate (3) of the sand discharge box (6) away from the slag removal box.

10. The automatic sand discharge device according to any one of claims 1 to 4, 6 and 8, characterized in that, The lower end of the sand discharge box (6) is connected to a flexible sand discharge connector (7).

Images