Belt metal detection alarm device

Abstract

The utility model discloses a belt metal detection alarm device which comprises a bottom plate arranged above the rear end of a conveying belt and an upper shell of the bottom plate, a plurality of proximity switches right facing the conveying belt are installed on the bottom plate and control the conveying belt to give an alarm and stop through a control system, and a coal leveling guide assembly is arranged at the front end of the upper shell. The proximity switch for alarming is arranged at the front end of the conveyor belt for feeding of the crusher, and the control system controls the conveyor belt to stop running, so that residual metal blocks on the conveyor belt are prevented from entering the crusher to cause damage to the crusher, and the risk of spark fire is fundamentally eradicated.

Description

Technical Field

[0001] The utility model relates to the field of conveyor belt metal alarms, in particular to a belt metal detection alarm device. Background Art

[0002] When the coal conveyor belt is transporting raw coal for crushing, in order to ensure the normal and stable use of the crusher, an iron remover (such as Figure 3 However, since the iron remover is at a certain distance from the crusher feed port, once the iron remover fails to work, the iron in the raw coal will enter the crusher, causing electric sparks in the crusher, which not only affects the normal operation of the crusher but also poses a high safety risk. Utility Model Content

[0003] In order to solve the above-mentioned problems, the utility model provides a belt metal detection alarm device.

[0004] The utility model is realized through the following technical solutions:

[0005] A belt metal detection alarm device includes a base plate and an upper shell arranged above the rear end of a conveyor belt. A plurality of proximity switches facing the conveyor belt are installed on the base plate. The proximity switches control the conveyor belt to alarm and stop through a control system. A flat coal guide assembly is provided at the front end of the upper shell.

[0006] Further optionally, the control system includes a PLC controller, which is electrically connected to the wiring terminals, the alarm, and the drive motor of the conveyor belt through cables.

[0007] Further optionally, the flat coal guide assembly includes a flat coal angle frame fixed to the upper shell, a support rod is laterally connected to the middle of the flat coal angle frame, and both ends of the support rod are connected to the protective frame on the side of the conveyor belt through a fixed sleeve.

[0008] Further optionally, the conveyor belt is supported on the frame through support rollers, a drive motor for driving the support rollers to rotate is installed on one side of the frame, and the protective frames are installed on the upper parts of both sides of the frame.

[0009] Further optionally, the top of the upper shell is fixed to the top plate by a plurality of hanging chains.

[0010] Further optionally, the interior of the upper shell is filled with foam.

[0011] Further optionally, the bottom plate is provided with a plurality of side mounting holes for embedding and mounting the proximity switch.

[0012] Compared with the existing technology, the beneficial effect of the present invention is that: the present invention sets an alarm proximity switch at the front end of the conveyor belt for feeding the crusher, and controls the conveyor belt to stop running through the control system, thereby preventing the metal blocks remaining on the conveyor belt from entering the crusher and causing damage thereto, and also fundamentally eliminating the risk of spark fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the utility model;

[0014] Figure 2 It is a three-dimensional schematic diagram of the local structure of this utility model;

[0015] Figure 3 It is a schematic diagram of the prior art of this utility;

[0016] In the figure: base plate 1, proximity switch 2, terminal block 3, upper shell 4, hanging chain 5, coal leveling angle bracket 6, support rod 7, fixing sleeve 8, frame 9, support roller 10, conveyor belt 11, drive motor 12, protective frame 13, PLC controller 14, cable 15, alarm 16. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] like Figure 1 、 2 As shown, a belt metal detection alarm device includes a base plate 1 and an upper shell 4 arranged above the conveyor belt 11. The upper shell 4 plays a protective and explosion-proof role. A plurality of proximity switches 2 facing the conveyor belt 11 are installed on the base plate 1. The proximity switch 2 adopts a metal proximity switch 2 with model SN04-N. The proximity switch 2 controls the conveyor belt 11 to alarm and stop through the control system. A flat coal guide assembly is provided at the front end of the upper shell 4.

[0019] like Figure 1 As shown, the control system includes a PLC controller 14 , which is electrically connected to the wiring terminal 3 , the alarm 16 , and the drive motor 12 of the conveyor belt 11 through a cable 15 . The wiring terminal 3 is arranged inside the upper shell 4 .

[0020] like Figure 2 As shown, the flat coal guide assembly includes a flat coal angle frame 6 fixed to the upper shell 4, and a support rod 7 is horizontally connected to the middle of the flat coal angle frame 6. The two ends of the support rod 7 are connected to the protective frame 13 on the side of the conveyor belt 11 through a fixed sleeve 8. The flat coal guide assembly plays a guiding role, ensuring the flatness of the coal material and improving the stability of the proximity switch detection.

[0021] like Figure 1As shown, the conveyor belt 11 is supported on the frame 9 through the support roller 10. A drive motor 12 is installed on one side of the frame 9 to drive the support roller 10 to rotate, and a protective frame 13 is installed on the upper part of both sides of the frame 9.

[0022] like Figure 2 As shown, the top of the upper shell 4 is fixed to the top plate through a plurality of hanging chains 5.

[0023] like Figure 1 As shown, the interior of the upper shell 4 is filled with foam, which plays a sealing role to prevent coal powder from entering the components of the upper shell 4. A plurality of side mounting holes for embedding and mounting the proximity switch 2 are opened on the bottom plate 1.

[0024] The implementation principle of the belt metal detection alarm device in the embodiment of the present application is as follows:

[0025] When the conveyor belt 11 transports the raw coal to the crusher, the iron remover above the conveyor belt 11 absorbs the iron blocks in the raw coal. The coal on the conveyor belt 11 passes through the iron remover and reaches the bottom plate 1 of the detector. The multiple proximity switches 2 on the bottom plate 1 will detect whether there are any metal iron blocks remaining on the conveyor belt 11. When metal iron blocks are detected, the proximity switches 2 transmit a signal to the PLC controller 14. The PLC controller 14 controls the alarm 16 to sound and light alarms to serve as a warning. At the same time, the PLC controller 14 will also control the drive motor 12 of the conveyor belt 11 to stop running, thereby stopping the conveyor belt 11 from continuing to run, preventing the metal blocks remaining on the conveyor belt 11 from entering the crusher and causing damage thereto, and fundamentally eliminating the risk of spark fires.

[0026] At the same time, the flat coal angle bracket 6 of the flat coal guide assembly at the front end of the upper shell 4 will flatten the coal on the conveyor belt 11, so that the belt coal passes through the detector proximity switch 2 and remains flat, avoiding the coal touching the proximity switch 2, ensuring the stability of the proximity switch 2, and thus improving the stability of the detection of the proximity switch 2, and the fixed sleeves 8 on both sides of the support rod 7 are connected to the vertical rods of the protective frame 13 to avoid shaking of the flat coal angle bracket 6.

[0027] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A belt metal detection alarm device, characterized by: The invention comprises a bottom plate (1) and an upper shell (4) arranged above the rear end of a conveyor belt (11); a plurality of proximity switches (2) facing the conveyor belt (11) are installed on the bottom plate (1); the proximity switches (2) control the conveyor belt (11) to stop by alarm through a control system; and a flat coal guide assembly is provided at the front end of the upper shell (4).

2. A belt metal detection alarm device according to claim 1, characterized in that: The control system comprises a PLC controller (14), and the PLC controller (14) is electrically connected to a connection terminal (3), an alarm (16), and a driving motor (12) of a conveyor belt (11) via a cable (15).

3. The belt metal detection alarm device according to claim 1, characterized in that: The flat coal guide assembly comprises a flat coal angle frame (6) fixed to the upper shell (4); a support rod (7) is transversely connected to the middle of the flat coal angle frame (6); and both ends of the support rod (7) are sleeved on the protective frame (13) on the side of the conveyor belt (11) through a fixing sleeve (8).

4. The belt metal detection alarm device according to claim 1, characterized in that: The conveyor belt (11) is supported on a frame (9) through a support roller (10); a driving motor (12) for driving the support roller (10) to rotate is installed on one side of the frame (9); and the protective frame (13) is installed on the upper parts of both sides of the frame (9).

5. The belt metal detection alarm device according to claim 3, characterized in that: The top of the upper shell (4) is fixed to the top plate via a plurality of hanging chains (5).

6. The belt metal detection alarm device according to claim 5, characterized in that: The interior of the upper shell (4) is filled with foamed rubber.

7. The belt metal detection alarm device according to claim 1, characterized in that: The bottom plate (1) is provided with a plurality of side mounting holes for embedding and mounting the proximity switch (2).

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