Blockage detection switch for chute

Abstract

The utility model relates to a material blocking detection switch of a chute, and belongs to the technical field of material blocking prevention of chutes. Comprising a first metal induction sheet, a second metal induction sheet, a third metal induction sheet, a fourth metal induction sheet, a Hall switch, a first support and a controller. When a second metal induction sheet and a third metal induction sheet are pushed to the outside of the chute through materials blocked in the chute, the first metal induction sheet and the fourth metal induction sheet rotate; because the fourth metal induction sheet is horizontally located above the Hall switch and is in electromagnetic induction connection with the Hall switch, when the fourth metal induction sheet rotates, an electromagnetic induction signal between the fourth metal induction sheet and the Hall switch changes, and the Hall switch sends the changed signal to the controller. And the controller determines the blockage condition in the chute according to the changed signal, so that automatic detection of chute blockage and linkage control of the belt conveyor and mechanical equipment for dumping materials are realized, and the influence on production is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chute material blocking prevention, in particular to a chute material blocking detection switch. Background Art

[0002] The material transportation process is that the mechanical equipment carrying the material dumps the material at the entrance at the top of the chute, and the material falls onto the belt conveyor through the outlet at the bottom of the chute, and the belt conveyor transports the material. However, in the material transportation process, the belt conveyor often transports materials at a speed slower than the dumping speed of the material, which easily causes the material to be blocked in the chute.

[0003] At present, operators regularly or irregularly inspect the chute to determine whether blockage has occurred. This method has high labor costs and cannot detect chute blockage in time. Once there is a blockage in the chute and the operator fails to discover it in time, it is easy to affect production and there are certain safety hazards. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a material blocking detection switch for a chute. The technical solution of the utility model is as follows:

[0005] A material blockage detection switch for a chute, wherein a through hole is provided on the outer side of the chute, and the material blockage detection switch comprises a first metal sensing sheet, a second metal sensing sheet, a third metal sensing sheet, a fourth metal sensing sheet, a Hall switch, a first support and a controller, wherein the first support is fixedly connected to the outer side of the chute and is located above the through hole, the Hall switch is fixedly connected to the outer side of the chute and is located below the through hole, one end of the first metal sensing sheet is rotatably connected to the first support, the other end of the first metal sensing sheet extends vertically downward, the other end of the first metal sensing sheet is fixedly connected to one end of the second metal sensing sheet, the connection between the first metal sensing sheet and the second metal sensing sheet is located on the outer side of the top of the through hole, and the second metal sensing sheet is fixedly connected to the outer side of the through hole. The other end of the sensing sheet obliquely passes through the through hole and then extends to the inside of the chute, the other end of the second metal sensing sheet is fixedly connected to one end of the third metal sensing sheet, and the connection between the second metal sensing sheet and the third metal sensing sheet is located inside the chute, the other end of the third metal sensing sheet obliquely passes through the through hole and then extends to the outside of the chute, the other end of the third metal sensing sheet is fixedly connected to one end of the fourth metal sensing sheet, and the connection between the third metal sensing sheet and the fourth metal sensing sheet is located on the outside of the bottom of the through hole, the fourth metal sensing sheet is horizontally arranged and located above the Hall switch, and the fourth metal sensing sheet is connected to the Hall switch by electromagnetic induction; the Hall switch is electrically connected to the controller.

[0006] Optionally, a blockage detection switch for a chute also includes a first baffle, one end of which is fixedly connected to the inner side surface of the chute and close to the top of the through hole, and the other end of the first baffle extends obliquely downward toward the interior of the chute, and the first baffle is located on the inner side of the second metal sensor sheet.

[0007] Optionally, a blockage detection switch for a chute further includes a limit plate, one end of which is fixedly connected to the other end of the first baffle, and the other end of the limit plate extends obliquely downward toward the outside of the chute.

[0008] Optionally, a blockage detection switch for a chute also includes a second support and a second baffle, the second support is fixedly connected to the inner side surface of the chute and is located below the through hole, one end of the second baffle is rotatably connected to the second support, and the other end of the second baffle abuts against the limit plate.

[0009] Optionally, a first angle between the first metal sensing sheet and the second metal sensing sheet is 135°, a second angle between the second metal sensing sheet and the third metal sensing sheet is 75°, and a third angle between the third metal sensing sheet and the fourth metal sensing sheet is 120°.

[0010] Optionally, a blockage detection switch for a chute also includes a third support and a protective cover, wherein the third support is fixedly connected to the outer side surface of the chute and is located above the first support, the longitudinal section of the protective cover is an inverted L-shape, one end of the protective cover is rotatably connected to the third support, and the first metal sensor sheet, the fourth metal sensor sheet, the Hall switch and the first support are all located between the outer side surface of the chute and the protective cover.

[0011] Optionally, the first metal sensing sheet, the second metal sensing sheet, the third metal sensing sheet, and the fourth metal sensing sheet are all made of nickel-plated iron sheets or galvanized iron sheets.

[0012] Optionally, the through hole is located close to the bottom surface of the chute.

[0013] All the optional technical solutions mentioned above can be combined arbitrarily, and the present utility model does not provide detailed descriptions of the structures after the combinations one by one.

[0014] By means of the above scheme, the beneficial effects of the utility model are as follows:

[0015] By arranging the first metal sensing sheet, the second metal sensing sheet, the third metal sensing sheet, the fourth metal sensing sheet, the Hall switch, the first support and the controller, when the dumped material is blocked inside the chute, the material in the chute is easy to touch the second metal sensing sheet and the third metal sensing sheet and generate a force to push the second metal sensing sheet and the third metal sensing sheet to the outside of the chute, thereby causing the first metal sensing sheet to rotate along the first support, thereby driving the fourth metal sensing sheet to rotate; since the fourth metal sensing sheet is horizontally located above the Hall switch and is electromagnetically inductively connected to the Hall switch, it will tilt when the fourth metal sensing sheet rotates, causing the electromagnetic induction signal between the fourth metal sensing sheet and the Hall switch to change, and the Hall switch sends the changed signal to the controller. The controller controls the belt conveyor and the mechanical equipment for dumping materials to pause after judging that the chute is blocked according to the changed signal, which not only realizes the automatic detection of chute blockage, but also realizes the linkage control of the belt conveyor and the mechanical equipment for dumping materials, which not only saves labor costs, but also can timely detect chute blockage and take measures, avoid the occurrence of safety accidents, and reduce the impact on production.

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model.

[0018] Description of Figure Numbers:

[0019] 1. First metal sensor sheet; 2. Second metal sensor sheet; 3. Third metal sensor sheet; 4. Fourth metal sensor sheet; 5. Hall switch; 6. First support; 7. First baffle plate; 8. Limiting sheet; 9. Second support; 10. Second baffle plate; 11. First angle; 12. Second angle; 13. Third angle; 14. Third support; 15. Protective cover; 16. Chute; 17. Belt conveyor. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] like Figure 1As shown, the utility model provides a material blockage detection switch for a chute, wherein a through hole is provided on the outer side surface of the chute 16, and the material blockage detection switch comprises a first metal sensing sheet 1, a second metal sensing sheet 2, a third metal sensing sheet 3, a fourth metal sensing sheet 4, a Hall switch 5, a first support 6 and a controller, wherein the first support 6 is fixedly connected to the outer side surface of the chute 16 and is located above the through hole, the Hall switch 5 is fixedly connected to the outer side surface of the chute 16 and is located below the through hole, one end of the first metal sensing sheet 1 is rotatably connected to the first support 6, the other end of the first metal sensing sheet 1 extends vertically downward, the other end of the first metal sensing sheet 1 is fixedly connected to one end of the second metal sensing sheet 2, and the connection between the first metal sensing sheet 1 and the second metal sensing sheet 2 is located on the outer side of the top of the through hole, The other end of the second metal sensor sheet 2 extends to the inside of the chute 16 after passing through the through hole at an angle downward, and the other end of the second metal sensor sheet 2 is fixedly connected to one end of the third metal sensor sheet 3, and the connection between the second metal sensor sheet 2 and the third metal sensor sheet 3 is located inside the chute 16. The other end of the third metal sensor sheet 3 extends to the outside of the chute 16 after passing through the through hole at an angle downward, and the other end of the third metal sensor sheet 3 is fixedly connected to one end of the fourth metal sensor sheet 4, and the connection between the third metal sensor sheet 3 and the fourth metal sensor sheet 4 is located on the outside of the bottom of the through hole. The fourth metal sensor sheet 4 is horizontally arranged and located above the Hall switch 5, and the fourth metal sensor sheet 4 is connected to the Hall switch 5 by electromagnetic induction; the Hall switch 5 is electrically connected to the controller.

[0022] By arranging the first metal sensing sheet 1, the second metal sensing sheet 2, the third metal sensing sheet 3, the fourth metal sensing sheet 4, the Hall switch 5, the first support 6 and the controller, when the dumped material is blocked inside the chute 16, the material in the chute 16 is easy to touch the second metal sensing sheet 2 and the third metal sensing sheet 3 and generate a force to push the second metal sensing sheet 2 and the third metal sensing sheet 3 to the outside of the chute 16, thereby causing the first metal sensing sheet 1 to rotate along the first support 6, thereby driving the fourth metal sensing sheet 4 to rotate; since the fourth metal sensing sheet 4 is horizontally located above the Hall switch 5 and is electrically connected to the Hall switch 5 Magnetic induction connection, when the fourth metal induction sheet 4 rotates, it will tilt, so that the electromagnetic induction signal between the fourth metal induction sheet 4 and the Hall switch 5 will change, and the Hall switch 5 will send the changed signal to the controller. The controller determines that there is a blockage in the chute 16 according to the changed signal, and then controls the belt conveyor 17 and the mechanical equipment for dumping materials to pause. It not only realizes the automatic detection of the blockage of the chute 16, but also realizes the linkage control of the belt conveyor 17 and the mechanical equipment for dumping materials, which not only saves labor costs, but also can timely detect the blockage of the chute 16 and take measures, avoiding the occurrence of safety accidents and reducing the impact on production.

[0023] In a specific implementation manner, a period of time is preset for the controller, and this period of time is the shortest time that the controller receives the changing signal sent by the Hall switch 5; when the controller receives the electromagnetic induction signal sent by the Hall switch 5 for a continuous period without change, it proves that the electromagnetic induction between the Hall switch 5 and the fourth metal sensor sheet 4 is good and unchanged, and the fourth metal sensor sheet 4 does not rotate or tilt, thereby, the controller can determine that there is no blockage in the current chute 16; when the controller receives the electromagnetic induction signal sent by the Hall switch 5 for a change, and the duration of the changing signal sent by the Hall switch 5 exceeds the time preset by the controller, it proves that the electromagnetic induction between the Hall switch 5 and the fourth metal sensor sheet 4 changes, and the fourth metal sensor sheet 4 rotates and tilts, thereby, the controller can determine that there is a blockage in the current chute 16, and the controller controls the mechanical equipment for dumping materials and the belt conveyor 17 to stop working, and starts the mechanical equipment for dumping materials and the belt conveyor 17 after the blocked material in the chute 16 is cleared.

[0024] By presetting a period of time for the controller, and only when the controller receives a changing signal sent by the Hall switch 5 and the duration of the changing signal exceeds the time preset by the controller, the controller determines that there is a blockage in the chute 16, thereby preventing the material from accidentally touching the second metal sensor sheet 2 or the third metal sensor sheet 3 to cause a change in the electromagnetic induction signal, causing the controller to make an erroneous judgment.

[0025] It should be noted that Figure 1The structure shown in the figure is to more clearly show the positional relationship between the blockage detection switch, the chute 16 and the belt conveyor 17. The specific sizes of the blockage detection switch, the chute 16 and the belt conveyor 17 should be designed and adjusted according to actual conditions.

[0026] Optionally, a blockage detection switch for a chute also includes a first baffle 7, one end of the first baffle 7 is fixedly connected to the inner side surface of the chute 16 and close to the top of the through hole, and the other end of the first baffle 7 extends obliquely downward toward the interior of the chute 16, and the first baffle 7 is located on the inner side of the second metal sensor sheet 2.

[0027] When pouring materials into the chute 16, the first baffle 7 can be provided to prevent the materials from accidentally touching the second metal sensor sheet 2, thereby preventing the material blockage detection switch from accidentally touching.

[0028] Optionally, a material blockage detection switch for a chute further includes a limit plate 8 , one end of the limit plate 8 is fixedly connected to the other end of the first baffle 7 , and the other end of the limit plate 8 extends obliquely downward toward the outside of the chute 16 .

[0029] Optionally, a blockage detection switch for a chute also includes a second support 9 and a second baffle 10, wherein the second support 9 is fixedly connected to the inner side surface of the chute 16 and is located below the through hole, one end of the second baffle 10 is rotatably connected to the second support 9, and the other end of the second baffle 10 abuts against the limit plate 8.

[0030] In a specific implementation, when the dumped material blocks the chute 16 , the material pushes the second baffle 10 , and the second baffle 10 pushes the third metal sensor sheet 3 , thereby causing the fourth metal sensor sheet 4 to rotate.

[0031] When the material pushes the second baffle 10, the second baffle 10 can prevent the material in the chute 16 from leaking out of the through hole; when the blockage in the chute 16 is cleared, the second baffle 10 can be stopped against the limit plate 8 when rotating along the second support 9 toward the inside of the chute 16, thereby preventing the second baffle 10 from rotating excessively and failing to play the role of preventing leakage.

[0032] Optionally, the first angle 11 between the first metal sensing sheet 1 and the second metal sensing sheet 2 is 135°, the second angle 12 between the second metal sensing sheet 2 and the third metal sensing sheet 3 is 75°, and the third angle 13 between the third metal sensing sheet 3 and the fourth metal sensing sheet 4 is 120°.

[0033] It should be noted that the second angle 12 of 75° in the present invention is the preferred angle for the material blocking detection switch to realize the detection function. If the second angle 12 becomes smaller or larger, the length of the second metal sensing sheet 2 and the third metal sensing sheet 3 in the chute 16 may be too long or too short. When material blocking occurs in the chute 16, the electromagnetic induction signal between the fourth metal sensing sheet 4 and the Hall switch 5 changes slightly during the process of the material pushing the second metal sensing sheet 2 and the third metal sensing sheet 3. The Hall switch 5 sends the changed signal to the controller, making it impossible for the controller to determine whether there is material blocking in the chute 16.

[0034] Optionally, a blockage detection switch for a chute also includes a third support 14 and a protective cover 15, the third support 14 is fixedly connected to the outer side of the chute 16 and is located above the first support 6, the longitudinal section of the protective cover 15 is an inverted L-shape, one end of the protective cover 15 is rotatably connected to the third support 14, and the first metal sensor sheet 1, the fourth metal sensor sheet 4, the Hall switch 5 and the first support 6 are all located between the outer side of the chute 16 and the protective cover 15.

[0035] By installing a protective cover 15 on the outside of the chute 16, dust impurities in the external environment can be prevented from affecting the Hall switch 5; and the protective cover 15 can also rotate along with the rotation of the fourth metal sensor plate 4, while protecting the fourth metal sensor plate 4 and the Hall switch 5, it can also ensure the freedom of rotation of the fourth metal sensor plate 4.

[0036] Optionally, the first metal sensing sheet 1 , the second metal sensing sheet 2 , the third metal sensing sheet 3 , and the fourth metal sensing sheet 4 are all made of nickel-plated iron sheets or galvanized iron sheets.

[0037] The Hall switch 5 used in the present invention has the characteristics of high precision and fast response. The Hall switch 5 can produce more accurate induction when combined with a nickel-plated iron sheet or a galvanized iron sheet, further improving the induction sensitivity and response speed of the Hall switch 5.

[0038] Optionally, the through hole is located near the bottom of the chute 16. Since the materials are accumulated from bottom to top in the chute 16 when the materials are blocked, the through hole is arranged near the bottom of the chute 16, so that the blocking situation can be found in time when the blocking materials are small, so that timely measures can be taken.

[0039] In summary, the material blockage detection switch provided by the utility model can promptly provide feedback to the controller when a material blockage occurs in the chute 16, thereby preventing the material blockage from seriously affecting production; and the utility model uses the Hall switch 5 as the sensing element of the material blockage detection switch, so that the material blockage detection switch has the advantages of high precision and fast response, which is more conducive to detecting the material blockage in the chute 16.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A material blocking detection switch for a chute, characterized in that: The outer side surface of the chute (16) is provided with a through hole, and the blockage detection switch comprises: A first metal sensing sheet (1), a second metal sensing sheet (2), a third metal sensing sheet (3), a fourth metal sensing sheet (4), a Hall switch (5), a first support (6) and a controller, wherein the first support (6) is fixedly connected to the outer side surface of the chute (16) and is located above the through hole, the Hall switch (5) is fixedly connected to the outer side surface of the chute (16) and is located below the through hole, one end of the first metal sensing sheet (1) is rotatably connected to the first support (6), the other end of the first metal sensing sheet (1) extends vertically downward, the other end of the first metal sensing sheet (1) is fixedly connected to one end of the second metal sensing sheet (2), the connection between the first metal sensing sheet (1) and the second metal sensing sheet (2) is located outside the top of the through hole, and the other end of the second metal sensing sheet (2) is The second metal sensing sheet (2) is obliquely passed through the through hole and then extends to the inside of the chute (16); the other end of the second metal sensing sheet (2) is fixedly connected to one end of the third metal sensing sheet (3); the connection between the second metal sensing sheet (2) and the third metal sensing sheet (3) is located inside the chute (16); the other end of the third metal sensing sheet (3) is obliquely passed through the through hole and then extends to the outside of the chute (16); the other end of the third metal sensing sheet (3) is fixedly connected to one end of the fourth metal sensing sheet (4); the connection between the third metal sensing sheet (3) and the fourth metal sensing sheet (4) is located outside the bottom of the through hole; the fourth metal sensing sheet (4) is horizontally arranged and located above the Hall switch (5); the fourth metal sensing sheet (4) is connected to the Hall switch (5) by electromagnetic induction; The Hall switch (5) is electrically connected to the controller.

2. A material blockage detection switch for a chute according to claim 1, characterized in that: Also includes: A first baffle (7), one end of which is fixedly connected to the inner side surface of the chute (16) and close to the top of the through hole, and the other end of which is inclined downward and extends into the interior of the chute (16). The first baffle (7) is located on the inner side of the second metal sensor sheet (2).

3. A material blockage detection switch for a chute according to claim 2, characterized in that: Also includes: A limiting plate (8), one end of which is fixedly connected to the other end of the first baffle (7), and the other end of which extends obliquely downward toward the outside of the chute (16).

4. A material blocking detection switch for a chute according to claim 3, characterized in that: Also includes: A second support (9) and a second baffle (10), wherein the second support (9) is fixedly connected to the inner side surface of the chute (16) and is located below the through hole, one end of the second baffle (10) is rotatably connected to the second support (9), and the other end of the second baffle (10) is in contact with the limiting plate (8).

5. A material blocking detection switch for a chute according to claim 1, characterized in that: The first angle (11) between the first metal sensing sheet (1) and the second metal sensing sheet (2) is 135°, the second angle (12) between the second metal sensing sheet (2) and the third metal sensing sheet (3) is 75°, and the third angle (13) between the third metal sensing sheet (3) and the fourth metal sensing sheet (4) is 120°.

6. A material blocking detection switch for a chute according to claim 1, characterized in that: Also includes: A third support (14) and a protective cover (15), wherein the third support (14) is fixedly connected to the outer side surface of the chute (16) and is located above the first support (6), the longitudinal section of the protective cover (15) is an inverted L-shape, one end of the protective cover (15) is rotatably connected to the third support (14), and the first metal sensor sheet (1), the fourth metal sensor sheet (4), the Hall switch (5) and the first support (6) are all located between the outer side surface of the chute (16) and the protective cover (15).

7. A material blocking detection switch for a chute according to claim 1, characterized in that: The first metal sensing sheet (1), the second metal sensing sheet (2), the third metal sensing sheet (3) and the fourth metal sensing sheet (4) are all made of nickel-plated iron sheets or zinc-plated iron sheets.

8. A material blocking detection switch for a chute according to claim 1, characterized in that: The through hole is located close to the bottom surface of the chute (16).

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