Simple prediction device for gangue open channel blockage

Abstract

The simple prediction device comprises a door plate, a probe rod and a contact switch, the upper end of the door plate is hinged to the open channel, the door plate can be attached to an outlet of the open channel in a natural state, and the door plate leaves the outlet of the open channel under impact of gangue; the feeler lever is installed on the inner side face of the door plate, the contact switch is installed on an open channel, in the natural state, the feeler lever can make contact with a contact of the contact switch and generate a signal, and under the impact of gangue, the feeler lever leaves the contact of the contact switch and does not generate a signal. According to the utility model, on-site real-time blockage monitoring is carried out, on the basis of the traditional mechanical principle, through the improvement of the structural form, the on-site blockage condition can be fed back quickly in real time, and the purposes of simpler manufacturing, more convenient use, lower power consumption and simpler maintenance are achieved.

Description

Technical Field

[0001] The utility model relates to the blockage of an open channel, in particular to a simple prediction device for the blockage of a gangue open channel. Background Technique

[0002] With the improvement of the degree of coal mining mechanization, the content of gangue in raw coal is increasing, which brings certain difficulties to separation. When the primary coal preparation and grading are not ideal, large pieces of materials (including ironware, sundries and gangue) will directly enter the non-pressure feeding three-product heavy medium cyclone. The use and operation of the three-product cyclone are the core of the coal preparation and washing system. Especially when blockages occur in the connection section between the first stage and the second stage of the cyclone and the front section of the gangue open channel, it will have a significant impact on the clean coal product. Because after the above two situations occur, it is inevitable that gangue and medium coal will enter the clean coal, which greatly affects the product sales. Even, it is necessary to carry out secondary recovery and washing of the washed clean coal, increasing the washing cost and labor intensity. Content of the Utility Model

[0003] To solve the defects of the above-mentioned existing technologies, the utility model provides a simple prediction device for the blockage of a gangue open channel. The utility model has low power consumption, a simple structure, low cost, stable operation, easy maintenance and a long service life, and can solve the problem that it is impossible to know the blockages in the connection section between the first stage and the second stage of the cyclone and the front section inside the open channel.

[0004] To achieve the above technical purpose, the utility model adopts the following technical scheme: a simple prediction device for the blockage of a gangue open channel, including a door panel, a probe rod and a contact switch. The upper end of the door panel is hinged to the open channel, and in the natural state, the door panel can fit with the open channel outlet. Under the impact of gangue, the door panel leaves the open channel outlet.

[0005] The probe rod is installed on the inner side surface of the door panel, and the contact switch is installed on the open channel. In the natural state, the probe rod can contact the contact point of the contact switch and generate a signal. Under the impact of gangue, the probe rod leaves the contact point of the contact switch and does not generate a signal.

[0006] It also includes a mounting plate fixed at the open channel outlet. The mounting plate is provided with a groove, and a hinge is arranged at the top of the groove. The door panel is installed on the hinge, so that the door panel rotates around the hinge; the contact switch is installed on the mounting plate.

[0007] It also includes a cover pipe. One side of the cover pipe is open and connected to the open channel outlet. The outlet of the cover pipe is downward for discharging gangue; a movable groove is opened at the top of the cover pipe, the door panel is located in the movable groove, and the width of the movable groove is greater than the movement width of the door panel.

[0008] It further includes a dust-proof cloth, and the four sides of the dust-proof cloth are fixed to the movable groove and the door panel, and the dust-proof cloth has elasticity.

[0009] In summary, the present utility model has achieved the following technical effects:

[0010] The present utility model monitors the on-site real-time blockage. Based on the traditional mechanical principle, through the improvement of the structural form, it can achieve the real-time and rapid feedback of the blockage situation on-site, achieving the purpose of simpler manufacturing, more convenient use, lower power consumption, and easier maintenance;

[0011] The structure of the present utility model is stable, the operation is smooth, the installation is convenient, and the energy consumption is low. The device is mainly composed of a probe rod and a contact switch. After the probe rod is vertically installed, as long as the contact switch is installed in matching with the probe rod, only the power supply needs to be provided to the contact switch to start running, without the need to calibrate the dynamic balance, and it is stable and noiseless during the operation process;

[0012] The present utility model is easy to repair and has a low cost. If the device is damaged, only the probe rod or the contact switch needs to be replaced. Therefore, the entire equipment has a longer service life, saving the maintenance material cost and maintenance labor cost, and reducing the use cost. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the use state of a simple prediction device for blockage of a gangue open channel;

[0014] Figure 2 is Figure 1 a partial schematic diagram of Detailed Embodiment

[0015] The following further details the present utility model with reference to the drawings.

[0016] This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

[0017] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0018] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0019] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0021] Embodiment:

[0022] Figure 1 It is a schematic diagram of the use state of a simple prediction device for the blockage of a gangue open channel. Figure 2 is Figure 1Partial schematic diagram, including a door panel 3, a probe rod 42, and a contact switch 41. The upper end of the door panel 3 is hinged to the open channel 1, and in the natural state, the door panel 3 can fit with the outlet of the open channel 1. Under the impact of gangue, the door panel 3 leaves the outlet of the open channel 1. The probe rod 42 is installed on the inner side of the door panel 3, and the contact switch 41 is installed on the open channel. In the natural state, the probe rod 42 can contact the contact point of the contact switch 41 and generate a signal. Under the impact of gangue, the probe rod 42 leaves the contact point of the contact switch 41 and no signal is generated.

[0023] The utility model is placed at the end of the gangue open channel. The main components of the induction device are a contact switch and a probe rod. When the gangue open channel is blocked and there is no material flow in the open channel, the probe rod is in the natural vertical position and contacts the contact switch to generate a signal. When there is normal operation and material flow, the probe rod is in an inclined position and separated from the contact switch under the impact of the material. During the production process, a large amount of material in the gangue open channel will impact the probe rod and the contact switch will not generate a signal. When the open channel is blocked and there is no material to impact the probe rod, the contact switch closes to issue an alarm. This device consumes less power, has a simple structure, low cost, stable operation, easy maintenance, and a long service life. It can solve the problem of not being able to know the blockage in the connection section between the first stage and the second stage of the cyclone and the front section inside the open channel. Since the outlet of the open channel is hardly blocked, the blockage at the outlet of the open channel is not within the scope of the present utility model.

[0024] It further includes a mounting plate 11 fixed at the outlet of the open channel 1. The mounting plate 11 is provided with a groove 111, and a hinge 301 is arranged at the top of the groove 111. The door panel 3 is installed on the hinge 301, so that the door panel 3 rotates around the hinge 301. When there is no gangue, the door panel naturally droops under gravity. When there is gangue, the door panel tilts. The contact switch 41 is installed on the mounting plate 11, and the probe rod contacts the contact switch to generate a signal.

[0025] The contact switch and the probe rod can adopt common market models. The contact switch is signal-connected to an external control center and can send signals. When there is a signal, it indicates a blockage. When there is no signal, it indicates no blockage.

[0026] It further includes a cover pipe 2. One side of the cover pipe 2 is open and connected to the outlet of the open channel 1. The outlet of the cover pipe 2 faces downward to guide the gangue to the feeding box 5 of the arc screen below. An activity slot 21 is opened at the top of the cover pipe 2. The door panel 3 is located in the activity slot 21, and the width of the activity slot 21 is greater than the movement width of the door panel 3. The cover pipe 2 can cover the dust of the gangue, and the activity slot 21 can provide a certain movement space for the door panel.

[0027] It further includes a dust-proof cloth (not shown in the figure). The four sides of the dust-proof cloth are fixed to the movable groove 21 and the door panel. The dust-proof cloth is elastic and is adhered to the side walls of the door panel and the movable groove in a glued form, which does not affect the movement of the door panel and can block dust when the door panel moves.

[0028] When the gangue open channel is blocked and there is no material flow in the chute, the probe rod is in a natural vertical position; when there is material flow during normal operation, the probe rod is in an inclined position due to the impact of the material, and it is judged whether the on-site gangue open channel is blocked through the feedback of the contact switch signal.

[0029] The above description is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention all fall within the scope of the technical solution of the present invention.

Claims

1. A simple prediction device for gangue open channel blockage, characterized in that: It comprises a door panel (3), a probe rod (42), and a contact switch (41); the upper end of the door panel (3) is hinged on the open channel (1), and in a natural state, the door panel (3) can fit with the outlet of the open channel (1); under the impact of waste rock, the door panel (3) leaves the outlet of the open channel (1); The probe rod (42) is installed on the inner side of the door panel (3), and the contact switch (41) is installed on the open channel. In a natural state, the probe rod (42) can contact the contact point of the contact switch (41) and generate a signal. Under the impact of gangue, the probe rod (42) leaves the contact point of the contact switch (41) and does not generate a signal.

2. The simple prediction device for gangue open channel blockage according to claim 1 is characterized in that: It also comprises a mounting plate (11) fixed at the outlet of the open channel (1), the mounting plate (11) being provided with a groove (111), a hinge (301) being arranged at the top of the groove (111), the door panel (3) being mounted on the hinge (301) so that the door panel (3) rotates with the hinge (301) as an axis; and the contact switch (41) being mounted on the mounting plate (11).

3. The simple prediction device for gangue open channel blockage according to claim 2 is characterized in that: It also comprises a cover pipe (2), one side of which is open and connected to the outlet of the open channel (1), the outlet of the cover pipe (2) being used to discharge the gangue downwards; a movable groove (21) is provided on the top of the cover pipe (2), the door panel (3) is located in the movable groove (21), and the width of the movable groove (21) is greater than the movement width of the door panel (3).

4. The simple prediction device for gangue open channel blockage according to claim 3 is characterized in that: It also includes a dust cover cloth, the four sides of which are fixed to the movable groove (21) and the door panel, and the dust cover cloth is elastic.

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