A quantitative medium adding mechanism for a coal washing system in a coal washing plant

Abstract

The utility model discloses a quantitative medium adding mechanism of a coal washing system in a coal washing plant, comprising a silo and a drop tube arranged at the bottom of the silo, a frame is provided at the bottom of the drop tube, a weighing trough is provided in the frame, a connecting plate sliding in the frame is provided at the upper end of the weighing trough, the upper end of the weighing trough cooperates with the bottom of the drop tube, a cover plate rotatably connected to the weighing trough is provided at the lower end of the weighing trough, and a support frame cooperated with the cover plate is provided at the bottom of the frame. The weighing trough is aligned with the drop tube, and the medium in the silo enters the weighing trough. When adding material, the connecting plate moves to the left, the upper end of the weighing trough is staggered with the drop tube, the connecting plate blocks the lower end of the drop tube, and at the same time the cover plate is separated from the support frame, and the lower end of the weighing trough is opened for adding material. The amount of medium is weighed by the weighing trough, so that the quantitative medium adding of the washing system is realized, with high precision and good stability of product index control.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine washing, in particular to a quantitative medium adding mechanism for a coal washing system in a coal washing plant. Background Art

[0002] The failure rate of equipment operation in the coal preparation plant is low during the washing process. One person is assigned to inspect the main washing system and the screening system on site. The process parameters of some equipment have been connected to the host computer, and the dispatching room can have a preliminary understanding of the operation status of the site. The current medium addition process is to manually add magnetite powder and water to the medium tank based on experience, which is easy to cause a burden on the medium and water system, and the amount of medium cannot be guaranteed, resulting in poor stability of product index control. Utility Model Content

[0003] The utility model aims to solve the above problems and provides a quantitative medium adding mechanism for a coal washing system of a coal washing plant, which can realize the quantitative medium adding of the coal washing system with high accuracy.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A quantitative medium adding mechanism of a coal washing system in a coal washing plant comprises a silo and a drop pipe arranged at the bottom of the silo, a frame is provided at the bottom of the drop pipe, a weighing trough is provided in the frame, a connecting plate sliding in the frame is provided at the upper end of the weighing trough, the upper end of the weighing trough cooperates with the bottom of the drop pipe, a cover plate is provided at the lower end of the weighing trough, one end of the cover plate is rotatably connected to the weighing trough, and a supporting frame cooperating with the cover plate is provided at the bottom of the frame.

[0006] Furthermore, a slide groove is provided in the frame, and both ends of the connecting plate cooperate with the slide groove.

[0007] Furthermore, a hydraulic cylinder for driving the weighing tank to move left and right is provided at the right end of the frame, a cylinder body end of the hydraulic cylinder is fixed at the right end of the frame, and a piston rod end of the hydraulic cylinder is connected to the connecting plate.

[0008] Furthermore, the support frame is L-shaped.

[0009] Furthermore, the upper end of the vertical part of the support frame is fixed to the bottom of the frame, and the left end of the horizontal part of the support frame is provided with a rounded corner.

[0010] Furthermore, a connecting rod is provided at the right end of the cover plate, and a tension spring is provided between the connecting rod and the connecting plate.

[0011] Furthermore, baffles are provided at both ends of the frame.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a frame at the bottom of the drop tube, a weighing trough is provided in the frame, a connecting plate sliding in the frame is provided at the upper end of the weighing trough, the upper end of the weighing trough cooperates with the bottom of the drop tube, a cover plate with one end rotatably connected to the weighing trough is provided at the lower end of the weighing trough, and a support frame cooperating with the cover plate is provided at the bottom of the frame. The weighing trough is aligned with the drop tube, and the medium in the silo enters the weighing trough. When adding materials, the connecting plate moves to the left, the upper end of the weighing trough is staggered with the drop tube, the connecting plate blocks the lower end of the drop tube, and at the same time, the cover plate is separated from the support frame, and the lower end of the weighing trough is opened for adding materials. The amount of the medium is weighed by the weighing trough, so that the quantitative addition of the medium in the washing and sorting system is realized, with high accuracy and good stability in product index control. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the silo structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the weighing tank structure of the utility model;

[0018] Figure 4 This is the front view of the weighing tank of the utility model.

[0019] In the figure: silo 1, drop pipe 2, frame 3, weighing trough 4, cover plate 5, support frame 6, connecting plate 7, slide 8, hydraulic cylinder 9, connecting rod 10, tension spring 11, baffle 12. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in the present invention, 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 described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0021] like Figure 1 and Figure 3As shown, a quantitative medium adding mechanism of a coal washing system in a coal washing plant comprises a silo 1 and a drop tube 2 arranged at the bottom of the silo 1, a frame 3 is provided at the bottom of the drop tube 2, a weighing trough 4 is provided in the frame 3, a connecting plate 7 sliding in the frame 3 is provided at the upper end of the weighing trough 4, the upper end of the weighing trough 4 cooperates with the bottom of the drop tube 2, a cover plate 5 rotatably connected to the weighing trough 4 is provided at the lower end of the weighing trough 4, and a support frame 6 cooperating with the cover plate 5 is provided at the bottom of the frame 3. The weighing trough 4 is aligned with the drop tube 2, and the medium in the silo 1 enters the weighing trough 4. When adding materials, the connecting plate 7 moves to the left, the upper end of the weighing trough 4 is staggered with the drop tube 2, the connecting plate 7 blocks the lower end of the drop tube 2, and at the same time, the cover plate 5 is separated from the support frame 6, and the lower end of the weighing trough 4 is opened for adding materials. The amount of the medium is weighed by the weighing trough 4, so that the quantitative addition of the medium in the washing system is realized, with high accuracy and good stability of product index control.

[0022] like Figure 2 and Figure 3 As shown, a slide groove 8 is provided in the frame 3, and both ends of the connecting plate 7 cooperate with the slide groove 8, and the movement of the connecting plate 7 is guided by the slide groove.

[0023] like Figure 1 As shown, a hydraulic cylinder 9 for driving the weighing tank 4 to move left and right is provided at the right end of the frame 3 , the cylinder body end of the hydraulic cylinder 9 is fixed at the right end of the frame 3 , and the piston rod end of the hydraulic cylinder 9 is connected to the connecting plate 7 .

[0024] like Figure 2 As shown, the support frame 6 is L-shaped.

[0025] The upper end of the vertical part of the support frame 6 is fixed to the bottom of the frame 3, and the left end of the horizontal part of the support frame 6 is provided with a rounded corner.

[0026] like Figure 3 and Figure 4 As shown, a connecting rod 10 is provided at the right end of the cover plate 5, and a tension spring 11 is provided between the connecting rod 10 and the connecting plate 7. By providing the tension spring 11, it is ensured that the cover plate is closed securely and will not leak.

[0027] like Figure 2 As shown, baffles 12 are provided at both ends of the frame 3 to prevent the connecting plate from falling out of the frame.

[0028] In the description of the present invention, it should be noted that the terms "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A quantitative medium adding mechanism for a coal washing system in a coal washing plant, characterized in that: The invention comprises a silo (1) and a feeding tube (2) arranged at the bottom of the silo (1); a frame (3) is arranged at the bottom of the feeding tube (2); a weighing trough (4) is arranged in the frame (3); a connecting plate (7) sliding in the frame (3) is arranged at the upper end of the weighing trough (4); the upper end of the weighing trough (4) cooperates with the bottom of the feeding tube (2); a cover plate (5) is arranged at the lower end of the weighing trough (4) and one end of the cover plate (5) is rotatably connected to the weighing trough (4); and a supporting frame (6) cooperating with the cover plate (5) is arranged at the bottom of the frame (3).

2. A quantitative medium adding mechanism for a coal washing system in a coal washing plant as claimed in claim 1, characterized in that: A slide groove (8) is provided in the frame (3), and two ends of the connecting plate (7) cooperate with the slide groove (8).

3. A quantitative medium adding mechanism for a coal washing system in a coal washing plant as claimed in claim 1, characterized in that: The right end of the frame (3) is provided with a hydraulic cylinder (9) for driving the weighing tank (4) to move left and right. The cylinder body end of the hydraulic cylinder (9) is fixed to the right end of the frame (3), and the piston rod end of the hydraulic cylinder (9) is connected to the connecting plate (7).

4. A quantitative medium adding mechanism for a coal washing system in a coal washing plant as claimed in claim 1, characterized in that: The support frame (6) is L-shaped.

5. A quantitative medium adding mechanism for a coal washing system in a coal washing plant as claimed in claim 4, characterized in that: The upper end of the vertical part of the support frame (6) is fixed to the bottom of the frame (3), and the left end of the horizontal part of the support frame (6) is provided with a rounded corner.

6. A quantitative medium adding mechanism for a coal washing system in a coal washing plant as claimed in claim 1, characterized in that: A connecting rod (10) is provided at the right end of the cover plate (5), and a tension spring (11) is provided between the connecting rod (10) and the connecting plate (7).

7. A quantitative medium adding mechanism for a coal washing system in a coal washing plant as claimed in claim 1, characterized in that: Baffles (12) are provided at both ends of the frame (3).

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