Alarm and cut-off device for material spilling and blocking of receiving hopper

Abstract

The utility model discloses an alarming and cutting device for material spilling and blockage of a receiving hopper, relates to the technical field of raw material conveying equipment, and solves the problems that the labor intensity of belt workers and maintenance workers is increased due to material spilling or large-area material leakage. The U-shaped support comprises a limiting plate and connecting rods connected to the two ends of the limiting plate, the outer ends of the two connecting rods are connected to the outer side of the receiving hopper in an up-down sliding mode, and the limiting plate is arranged on the outward opening path of the baffle in a blocking mode and limits the maximum opening angle of the baffle. The arranged baffle naturally droops in a normal state, dust is prevented from running out, and the environment-friendly requirement is met; and the U-shaped bracket limits the maximum opening angle of the baffle plate, so that large-area material leakage and equipment damage caused by material blockage of the receiving hopper are prevented, and the effects of reducing the labor intensity of belt workers and maintenance workers and improving the working efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of raw material conveying equipment, in particular to a hopper material spillage and blockage alarm and cut-off device. Background Art

[0002] In steel mills, raw materials are mainly transported by conveyor belts. At the unloading port of the belt head pulley, if the belt deviates, the material line will shift, and the raw materials will fly out of the dust collector inspection manhole, causing material spillage. On the other hand, during the unloading process, the detached lining plate of the unloading hopper or impurities mixed in the raw materials will occasionally block the unloading port, causing blockage. The raw materials will slowly overflow from the inspection manhole, causing large-scale leakage and damage to equipment. At the same time, cleaning up the accumulated materials and repairing the damaged equipment increases the labor intensity of the belt workers and maintenance workers. Utility Model Content

[0003] The purpose of the utility model is to provide an alarm and cut-off device for material spillage and blockage in a receiving hopper. The baffle is naturally drooped under normal conditions to prevent dust from escaping, thus meeting environmental protection requirements. The U-shaped bracket limits the maximum opening angle of the baffle to prevent large-scale leakage and damage to equipment caused by material blockage in the receiving hopper, thereby reducing the labor intensity of belt workers and maintenance workers and improving work efficiency.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A material spillage and blockage alarm and cut-off device for a receiving hopper comprises a baffle and a U-shaped bracket. The upper end of the baffle is hinged to the receiving hopper and is blocked outside the inspection manhole on the side of the receiving hopper under the action of its own weight. The U-shaped bracket comprises a limit plate and connecting rods connected to the two ends of the limit plate. The outer ends of the two connecting rods slide up and down and are connected to the outside of the receiving hopper. The limit plate is blocked on the outward opening path of the baffle to limit the maximum opening angle of the baffle.

[0006] By adopting the above technical solution, the structure is simple, and it can alarm and cut off the belt motor when the material flies out or overflows; the baffle is normally in a naturally hanging state to prevent dust from escaping, meeting environmental protection requirements; this design can also prevent large-scale leakage and damage to equipment caused by hopper blockage, greatly reducing the labor intensity of belt workers and maintenance workers, making maintenance convenient, saving time and effort, and improving labor efficiency.

[0007] Furthermore, the outer side of the receiving hopper is connected to a slideway for the U-shaped bracket to slide up and down.

[0008] By adopting the above technical solution, the up and down sliding of the U-shaped bracket is achieved, so that it can slide upward to facilitate the full opening of the baffle during maintenance, so that the maintenance manhole is fully exposed.

[0009] Furthermore, the outer ends of the two connecting rods are connected to T-shaped blocks, the slideway includes corresponding vertical T-shaped slots connected to the outside of the hopper, and the U-shaped bracket slides up and down through the T-shaped blocks and the T-shaped slots.

[0010] By adopting the above technical solution, the T-block structure can be firmly stuck in the slide, making it convenient to move the U-shaped bracket through the center of gravity offset outside, so that the T-block can temporarily stay in different positions of the T-slot under the action of friction, which is convenient for maintenance work.

[0011] Furthermore, the lower end of the T-slot is closed, and the U-shaped bracket abuts against the lower end of the T-slot under the action of its own weight.

[0012] By adopting the above technical solution, the U-shaped bracket can stably abut against the closed end of the lower end of the T-shaped slot under the action of its own weight, thereby controlling the maximum opening angle of the baffle.

[0013] Furthermore, the limit plate is arranged to be tilted, and the tilt angle corresponds to the maximum opening angle of the limit baffle.

[0014] By adopting the above technical solution, the collision deformation between the baffle and the limit plate is reduced, and the noise is reduced.

[0015] Furthermore, the U-shaped bracket limits the maximum opening angle of the baffle to 10°.

[0016] By adopting the above technical solution, the maximum opening angle of the baffle is 10°, which can prevent large-scale leakage and damage to equipment caused by hopper blockage.

[0017] Furthermore, the limit plate is connected to an alarm device for giving an alarm when the baffle is opened.

[0018] By adopting the above technical solution, an alarm can be issued when the baffle is opened, prompting users to perform adjustment, material thinning or maintenance work.

[0019] Furthermore, the alarm device includes a proximity switch and a buzzer, and the proximity switch controls the buzzer to alarm after sensing that the baffle is opened.

[0020] By adopting the above technical solution, the proximity switch controls the buzzer to alarm after sensing that the baffle is opened, reminding the staff to handle it.

[0021] Furthermore, the alarm device includes a relay. When the proximity switch senses that the baffle is open, the relay is energized.

[0022] The contacts of the relay include a normally open contact and a normally closed contact. The normally open contact is connected in series with the buzzer to form a loop, and the normally closed contact is connected in series with the belt motor to form a loop.

[0023] After the relay is energized, the normally open contact closes, the buzzer starts to alarm, and the normally closed contact opens, and the belt motor stops running.

[0024] By adopting the above technical solution, the alarm and cut-off work are realized after the baffle is opened, so that the transmission belt stops running, which is convenient for adjustment and maintenance.

[0025] In summary, the present invention has the following beneficial effects:

[0026] The present application has a simple structure and can alarm and cut off the belt motor when materials fly out or overflow; the baffle is normally in a naturally hanging position to prevent dust from escaping, meeting environmental protection requirements; it can also prevent large-scale leakage and damage to equipment caused by hopper blockage through the U-shaped bracket structure, greatly reducing the labor intensity of belt workers and maintenance workers, facilitating maintenance, saving time and effort, and improving labor efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of a hopper spillage and blockage alarm and cut-off device of the utility model;

[0028] Figure 2 This is a structural diagram of the U-shaped bracket part of a hopper spillage and blockage alarm and cut-off device of the utility model;

[0029] Figure 3 The utility model is a circuit connection diagram of an alarm device in a hopper spillage and blockage alarm and cut-off device.

[0030] In the figure, 1. baffle; 2. U-shaped bracket; 21. limit plate; 22. connecting rod; 23. T-block; 3. slide; 4. proximity switch; 5. buzzer; 6. relay. DETAILED DESCRIPTION

[0031] The following is a further description of the specific embodiments of the present invention in conjunction with the accompanying drawings, which do not limit the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] A hopper spillage and blockage alarm and cut-off device, such as Figure 1 and Figure 2 As shown, it includes a baffle 1 and a U-shaped bracket 2. The upper end of the baffle 1 is hinged to the receiving hopper and is blocked outside the inspection manhole on the side of the receiving hopper under the action of its own weight, so that the baffle 1 is normally in a naturally hanging state to prevent dust from escaping to meet environmental protection requirements.

[0033] The U-shaped bracket 2 includes a limit plate 21 and a connecting rod 22 connected to both ends of the limit plate 21. The outer ends of the two connecting rods 22 slide up and down and are connected to the outside of the receiving hopper. The limit plate 21 is set on the path of the baffle 1 opening outward, limiting the maximum opening angle of the baffle 1 to prevent large-scale leakage and damage to the equipment after the receiving hopper is blocked.

[0034] like Figure 1 and Figure 2 As shown, the outer side of the receiving hopper is connected to a slideway 3 for the U-shaped bracket 2 to slide up and down, and the slideway 3 is symmetrically arranged on both sides of the inspection manhole; in this embodiment, the outer ends of the two connecting rods 22 are connected to the T-block 23, and the slideway 3 includes two corresponding vertical T-slots connected to the outer side of the receiving hopper. The U-shaped bracket 2 slides up and down through the T-block 23 and the T-slot, so that it can be firmly stuck in the slideway 3;

[0035] The lower end of the T-slot is closed and the upper end is open, which makes it easy to remove the U-shaped bracket 2 from the T-slot during maintenance. The U-shaped bracket 2 abuts against the lower end of the T-slot under the action of its own weight. The U-shaped bracket 2 stably abuts against the closed end of the lower end of the T-slot under the action of its own weight, controlling the maximum opening angle of the baffle 1;

[0036] Among them, the limit plate 21 is set at an angle, and the inclination angle corresponds to the maximum opening angle of the limit baffle 1; in this embodiment, when the U-shaped bracket 2 is located at the closed end of the lower end of the T-slot, the maximum opening angle of the limit baffle 1 is 10°.

[0037] like Figure 3 As shown, the limit plate 21 is connected to an alarm device for sounding an alarm when the baffle 1 is opened; the alarm device includes a proximity switch 4 and a buzzer 5, and the proximity switch 4 is fixed to the limit plate 21 by two locking nuts, and controls the buzzer 5 to sound an alarm after sensing that the baffle 1 is opened; it can also be replaced by other existing sensing alarm devices.

[0038] In this embodiment, the alarm device includes a relay 6 (KA), which is connected in series with the proximity switch 4 to form a proximity switch circuit. When the proximity switch 4 senses that the baffle 1 is open, the circuit is closed, so that the relay 6 is energized. The contacts of the relay 6 include a normally open contact and a normally closed contact. The normally open contact is connected in series with the buzzer 5 to form a circuit, and the normally closed contact, the belt motor KM and the PLC system control point are connected in series to form a circuit.

[0039] After the relay 6 is energized, its normally open contact closes, the buzzer 5 is energized and starts to alarm, while the normally closed contact is disconnected, the belt motor KM loses power and stops running; the alarm and cut-off work is realized after the baffle 1 is opened, so that the transmission belt stops running, which is convenient for adjustment and maintenance.

[0040] Working principle:

[0041] The baffle 1 is connected to the receiving hopper through a hinge. When there is no material flying out or overflowing, the baffle 1 naturally hangs down to block the inspection manhole to prevent dust from escaping.

[0042] When working, the U-shaped bracket 2 is at the bottom of the slide 3, just blocking the baffle 1 from opening significantly. By controlling the size of the opening, it is ensured that the material will not overflow instantly. When repairing, take the U-shaped bracket 2 out from above the slide 3.

[0043] When the material flies out or overflows, the baffle 1 is opened, the proximity switch 4 receives a signal, the relay 6 is energized, the normally closed contact is disconnected, the belt motor KM stops running, the normally open contact is closed, the buzzer 5 sounds, and the alarm starts.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. A hopper spillage and blockage alarm and cut-off device, characterized by: The invention comprises a baffle (1) and a U-shaped bracket (2), wherein the upper end of the baffle (1) is hinged to the receiving hopper and is blocked outside the inspection manhole on the side of the receiving hopper under the action of its own weight, and the U-shaped bracket (2) comprises a limit plate (21) and a connecting rod (22) connected to both ends of the limit plate (21), the outer ends of the two connecting rods (22) slide up and down and are connected to the outside of the receiving hopper, and the limit plate (21) is blocked on the path of the baffle (1) opening outward to limit the maximum opening angle of the baffle (1).

2. The hopper spillage and blockage alarm and cut-off device according to claim 1, characterized in that: The outer side of the receiving hopper is connected to a slideway (3) for the U-shaped bracket (2) to slide up and down.

3. The hopper spillage and blockage alarm and cut-off device according to claim 2, characterized in that: The outer ends of the two connecting rods (22) are connected to a T-shaped block (23), the slideway (3) includes a corresponding vertical T-shaped slot connected to the outside of the receiving hopper, and the U-shaped bracket (2) slides up and down through the T-shaped block (23) and the T-shaped slot.

4. The device for alarming and cutting off material spillage and blockage in a receiving hopper according to claim 3, characterized in that: The lower end of the T-shaped slot is closed, and the U-shaped bracket (2) abuts against the lower end of the T-shaped slot under the action of its own weight.

5. The device for alarming and cutting off material spillage and blockage in a receiving hopper according to claim 1, characterized in that: The limiting plate (21) is arranged to be tilted, and the tilt angle corresponds to the maximum opening angle of the limiting baffle (1).

6. The device for alarming and cutting off material spillage and blockage in a receiving hopper according to claim 5, characterized in that: The U-shaped bracket (2) limits the maximum opening angle of the baffle (1) to 10°.

7. A hopper spillage and blockage alarm and cut-off device according to claim 1 or 5, characterized in that: The limit plate (21) is connected to an alarm device for sounding an alarm when the baffle (1) is opened.

8. The device for alarming and cutting off material spillage and blockage in a receiving hopper according to claim 7, characterized in that: The alarm device comprises a proximity switch (4) and a buzzer (5), and the proximity switch (4) controls the buzzer (5) to sound an alarm after sensing that the baffle (1) is opened.

9. The device for alarming and cutting off material spillage and blockage in a receiving hopper according to claim 8, characterized in that: The alarm device includes a relay (6). When the proximity switch (4) senses that the baffle (1) is open, the relay (6) is energized. The contacts of the relay (6) include a normally open contact and a normally closed contact. The normally open contact is connected in series with the buzzer (5) to form a loop, and the normally closed contact is connected in series with the belt motor to form a loop. After the relay (6) is energized, the normally open contact closes, the buzzer (5) starts to alarm, and the normally closed contact opens, and the belt motor stops running.

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