Inner convex blocking material detection device

Abstract

The utility model relates to a kind of inner bulging material detection device, it includes door frame (1) and detection door (2), door frame (1) is the frame body with flange being equipped in the detection door mouth (11) of middle part, detection door (2) is outside chute in door frame (1), upper side is hinged with door frame (1) by hinged axle (3), lower side is naturally drooping under the action of gravity, door frame (1) is installed with inductive switch (4) in the side of chute outside, the position corresponding with inductive switch (4) is equipped with inductive block in the side surface of detection door (2), detection door (2) is bulged to door frame (1) and chute inside by the side of detection door mouth (11) towards chute interior, the depth of inner bulging is more and more deep from top to bottom.It is high in sensitivity, action timely, whether chute is blocked to be detected quickly and timely, so as to control the shutdown of upper level feeding device in time, to prevent belt conveyor and other equipment damage, so that economic loss can be reduced.

Description

Technical Field

[0001] This utility model relates to a material blockage detection device, specifically a material blockage detection device with an internal convex shape. Background Technology

[0002] When conveying materials such as coal using belt conveyors, chutes are typically installed at the feed point for material distribution. Under normal circumstances, material does not accumulate in the chutes; it is evenly distributed onto the running belt conveyor and then transported to the next stage. One reason for material accumulation in the chutes is a sudden influx of large quantities of material, which can clog the chutes and prevent even distribution onto the belt conveyor. Another reason is an unexpected stop of the belt conveyor, causing material to accumulate in the chutes, eventually leading to material leakage and potentially jamming the belt conveyor. Material accumulation in the chutes can range from affecting normal equipment operation and material leakage to damaging the chutes and belt conveyors, resulting in economic losses and unnecessary trouble. Chutes are generally equipped with blockage detection devices, which can play a role. However, existing blockage detection devices also have some problems, mainly low sensitivity, inability to act promptly, susceptibility to material jamming, and difficulty in resetting, resulting in less than ideal performance. Summary of the Invention

[0003] The purpose of this invention is to provide a highly sensitive, timely, non-jammable, easily reset, and effective internal convex material blockage detection device.

[0004] The technical solution of this utility model is as follows: It includes a door frame and a detection door. The door frame is a frame-shaped body with a detection door in the middle and flanges connected to the chute around the perimeter of the detection door. The detection door is outside the door frame and the chute. Its upper side is hinged to the door frame by a hinge in the horizontal axial direction, and its lower side hangs down naturally under the action of gravity. An inductive switch is installed on the side of the door frame outside the chute. A sensing block is provided on the side of the detection door at a position corresponding to the inductive switch. The detection door protrudes inward into the door frame and the chute through the detection door facing the inside of the chute, and the depth of the inward protrusion increases from top to bottom.

[0005] The technical advantages of this invention are: high sensitivity and timely action, enabling rapid and timely detection of material blockage in the chute, allowing for timely shutdown of the upstream feeding device to prevent damage to the belt conveyor and other equipment, thereby reducing economic losses. It prevents material leakage from the chute, reducing the hassle of material cleanup for on-site personnel and making it more convenient and safer to use. Its reasonable structure and adjustable clearance prevent material jamming, facilitating resetting and achieving ideal performance. Its simple and robust structure ensures a long service life, making it easier to use and maintain. Attached Figure Description

[0006] Figure 1 Three-dimensional representation of the present utility model Figure 1 ; Figure 2 Three-dimensional representation of the present utility model Figure 2 . Detailed Implementation

[0007] like Figure 1 , Figure 2 As shown, it includes a door frame 1 and a detection door 2. The door frame 1 is a frame-shaped body with a detection door 11 in the middle and flanges connected to the chute around the periphery of the detection door 11. The detection door 2 is outside the door frame 1 and the chute. Its upper side is hinged to the door frame 1 by a hinge pin 3 in the horizontal direction of the axial direction, and its lower side hangs down naturally under the action of gravity. An induction switch 4 is installed on the side of the door frame 1 outside the chute. A sensing block is provided on the side of the detection door 2 at a position corresponding to the induction switch 4. The detection door 2 protrudes inward into the door frame 1 and the chute through the detection door 11 towards the inside of the chute. The depth of the inward protrusion increases from top to bottom.

[0008] The detection door 2 is located at the upper middle part of the door frame 1 and the chute, and a counterweight 12 is installed thereon.

[0009] The door frame 1 has a material retaining eaves 13 on the side above the inspection door 11 facing the inside of the chute. The higher side of the eaves is connected to the top of the inspection door 11, and the lower side is inclined towards the inside of the chute.

[0010] The door frame 1 has a material guide eaves 14 on the side facing the inside of the chute below the inspection door 11. The higher side of the eaves is connected to the lower side of the inspection door 11, and the lower side is inclined towards the inside of the chute.

[0011] The door frame 1 has mounting bolt holes 15 on the upper, lower, left and right sides of the flange around the doorway 11.

[0012] Two limiting chains 16, one end of which is connected to the bottom of the door frame 1 facing outward from the chute, are provided on the left and right sides. Two hooks 21, cooperating with the limiting chains 16, are provided on the bottom of the detection door 2 facing outward from the chute on the left and right sides. The chain links at different positions of the limiting chains 16 are hooked on the hooks 21, which can limit the opening of the detection door 2 to prevent the detection door 2 from opening too far outward and to prevent material from leaking outward from the detection door 11.

[0013] The door frame 1, detection door 2, limit chain 16 and hook 21 are made of stainless steel to extend the service life of the detection device.

[0014] The sensing block is a permanent magnet installed on the detection gate 2 with an external protective layer, and the sensing switch 4 is a magnetic control switch.

[0015] Operating principle: When in use, this device is installed on the detection device mounting port set on the chute. The detection door 11 on the door frame 1 is matched with the detection device mounting port from the outside of the chute. The flanges around the door frame 1 are installed on the side wall of the chute by bolts. The lower side of the detection door 2 hangs down naturally under the action of gravity.

[0016] Under normal circumstances, the detection door 2 is closed on the detection door 11 on the door frame 1. The detection door 2 protrudes into the door frame 1 and the chute on the side facing inward. The sensing block on the detection door 2 is spaced apart from the sensing switch 4 on the door frame 1, so the sensing switch 4 will not be activated.

[0017] When material is normally fed through the chute, it flows evenly and orderly, landing on the belt conveyor without contacting the detection gate 2. However, if the incoming material is abnormal or the belt conveyor stops, causing a blockage in the chute, the material will accumulate and rise, eventually contacting the lower side of the detection gate 2 and causing it to flip outwards. When the detection gate 2 flips to the position where its sensor block aligns with the sensor switch 4 on the gate frame 1, the sensor switch 4 activates, sending a signal to the control box to automatically stop the equipment and prevent further escalation. Simultaneously, an alarm will sound, indicating a blockage in the chute.

[0018] Because the detection door 2 protrudes into the door frame 1 and the chute from the side facing the inside of the chute, it is easier to contact the material accumulated in the chute and detect blockages more easily. Therefore, it is more sensitive and acts more promptly.

Claims

1. An internal bulge blockage detection device, comprising a door frame (1) and a detection door (2), characterized in that: The door frame (1) is a frame-shaped body with a detection door (11) in the middle and a flange connected to the chute around the detection door (11). The detection door (2) is outside the door frame (1) and the chute. The upper side is hinged to the door frame (1) through a hinge shaft (3) in the horizontal direction of the axial direction, and the lower side hangs down naturally under the action of gravity. An induction switch (4) is installed on the side of the door frame (1) outside the chute. A sensing block is provided on the side of the detection door (2) corresponding to the induction switch (4). The detection door (2) protrudes into the door frame (1) and the chute through the detection door (11) on the side facing the inside of the chute. The depth of the protrusion increases from top to bottom.

2. The internal bulge blockage detection device as described in claim 1, characterized in that... The detection door (2) is equipped with a counterweight (12) located in the upper middle part of the door frame (1) and the outside of the chute.

3. The internal bulge blockage detection device as described in claim 1, characterized in that... The door frame (1) has a material retaining eave (13) on the side above the detection door (11) facing the inside of the chute. The higher side is connected to the upper side of the detection door (11), and the lower side is inclined towards the inside of the chute.

4. The internal bulge blockage detection device as described in claim 1, characterized in that... The door frame (1) has a material guide eave (14) on the side facing the inside of the chute below the detection door (11), with the higher side connected to the lower side of the detection door (11) and the lower side inclined towards the inside of the chute.

5. The internal bulge blockage detection device as described in claim 1, characterized in that... The door frame (1) has mounting bolt holes (15) on the upper, lower, left and right sides of the flange surrounding the inspection door (11).

6. The internal bulge blockage detection device as described in claim 1, characterized in that... The door frame (1) has two limiting chains (16) on the lower side facing out of the chute, one end of which is connected to the door frame (1). The detection door (2) has two hooks (21) on the lower side facing out of the chute, one on the left and one on the right, which cooperate with the limiting chains (16).

7. The internal bulge blockage detection device as described in claim 6, characterized in that... The door frame (1), detection door (2), limit chain (16) and hook (21) are all made of stainless steel.

8. The internal bulge blockage detection device as described in claim 1, characterized in that... The sensing block is a permanent magnet installed on the detection door (2) with an external protective layer, and the sensing switch (4) is a magnetic control switch.

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