Comprehensive detection device for blockage of center funnel of ship loader

Abstract

The utility model relates to a comprehensive detection device for blockage of a central funnel of a ship loader, which comprises a rotation-resistant detection device and a stroke-type detection device, and the rotation-resistant detection device comprises a funnel observation door, a rotation-resistant blockage switch, a blade, a protective cover and a first time relay. The stroke type detection device comprises a stroke limiting switch, a support, a rod column and a second time relay. The device can effectively detect the material blocking fault, is convenient to maintain and high in accuracy, is provided with two sets of detection devices, does not affect the detection of the other set of device even if one set of detection devices fails, and has extremely high practicability.

Description

Technical Field

[0001] This patent application belongs to the technical field of material blockage detection, and more specifically, relates to a comprehensive detection device for material blockage in the central hopper of a ship loader. Background Art

[0002] Ship loaders are important equipment for coal port enterprises, and they mainly transport coal to ships through the central hopper. However, the central hopper may be blocked due to a series of reasons such as excessive material intake and excessively sticky coal, which may affect production operations at the least and cause machine damage accidents at the worst. The current devices for detecting blockages have the following problems: most of them are installed inside the hopper, which is inconvenient to maintain; they are often triggered by mistake or cannot be detected, and the accuracy and precision are not high; there is only one detection device, and damage means that the blockage detection is completely ineffective. Therefore, how to accurately and effectively detect blockage failures, make the device easy to maintain, and avoid the failure of blockage detection has become an urgent problem to be solved in this field. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a comprehensive detection device for material blockage in the central hopper of a ship loader, which can effectively detect material blockage failures, is easy to maintain, has high accuracy, and has double sets of detection devices. If one set fails, the detection of the other set will not be affected, thereby avoiding the occurrence of material blockage detection failure.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A comprehensive detection device for the blockage of the central hopper of a ship loader, comprising a rotation-blocking detection device and a travel-type detection device located on both sides of the central hopper, wherein

[0006] The rotary resistance detection device includes a funnel observation door installed behind the central funnel drop point, a circular hole opened in the middle of the funnel observation door, a rotary resistance blocking switch fixed on the funnel observation door through the circular hole, a blade electrically connected to the rotary resistance blocking switch, a protective cover installed on the funnel observation door, and a first time relay electrically connected to the control circuit of the rotary resistance blocking switch, wherein the protective cover is located above the rotary resistance blocking switch and the blade, and the protective cover and the blade are both located in the central funnel;

[0007] The travel detection device includes a bracket welded at the inlet of the central funnel, a travel limit switch fixed on the bracket, and a second time relay electrically connected to the travel limit switch control circuit. A rod column is provided on the travel limit switch, and the rod column is in a horizontal state.

[0008] Furthermore, the model of the rotary paddle level switch is UZK-20BGA200 / GJY, the model of the travel limit switch is WLNJ-2 / OMRON, and the models of the first time relay and the second time relay are both H3Y-2 / DC24V / 5S / OMRON.

[0009] Further, the funnel observation door is installed at the lower left corner behind the center funnel drop point, and the funnel observation door is fixed to the center funnel through a latch and a hinge.

[0010] Furthermore, the protective cover is a hollow semi-cylindrical structure, the size of which is adapted to the blades of the rotary blocking switch, and which is welded to the funnel observation door.

[0011] Furthermore, the bracket includes two vertically arranged rectangular steel plates, each of which has multiple strip grooves in the middle. The strip grooves on different rectangular steel plates are fixed by fasteners. The bracket adjusts the up, down, left and right movement of the travel limit switch through the strip grooves and fasteners.

[0012] Furthermore, two strip grooves are opened in the middle of each rectangular steel plate, and the fasteners are fastening bolts.

[0013] Furthermore, the delay of the first time relay and the second time relay is 1 to 3 seconds.

[0014] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are:

[0015] (1) The use of double sets of blockage detection devices ensures the stability of detection.

[0016] (2) One set of detection devices is set on the outside of the funnel, and the other set of detection devices is set on the observation door. The two different locations are very convenient for maintenance.

[0017] (3) The device is simple to manufacture, low in cost, and highly practical.

[0018] (4) It can quickly detect faults and filter false operation detection through time relays with high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the installation location of the device;

[0020] Figure 2 This is a schematic diagram of the installation position of the rotation-resistance detection device;

[0021] Figure 3 It is a structural schematic diagram of a rotation-resistance detection device;

[0022] Figure 4 It is a structural schematic diagram of a travel type detection device;

[0023] Among them: 1. Center funnel, 2. Funnel observation door, 3. Rotary blocking switch, 4. Protective cover, 5. Blade, 6. Travel limit switch, 7. Bracket, 8. Rod column. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the embodiments.

[0025] A comprehensive detection device for the blockage of the central hopper of a ship loader comprises a rotation-blocking detection device and a travel-type detection device located on both sides of the central hopper 1.

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, the rotation-resistance detection device includes a hopper observation door 2, a rotation-resistance blocking switch 3, a protective cover 4, and a first time relay;

[0027] The funnel observation door 2 has a circular hole in the middle and is installed behind the drop point of the central funnel 1, preferably in the lower left corner; the rotary blocking switch 3 is fixed on the funnel observation door 2 through the circular hole, and the rotary blocking switch 3 is electrically connected to the blade 5; the protective cover 4 is welded on the funnel observation door 2 and is located on the upper part of the rotary blocking switch 3 and the blade 5, and the protective cover 4 and the blade 5 are both located in the central funnel 1; the first time relay is connected to the control circuit of the rotary blocking switch 3.

[0028] like Figure 3 , Figure 4 As shown, the travel detection device includes a travel limit switch 6, a bracket 7, and a second time relay.

[0029] The travel limit switch 6 is fixed on the bracket 7; the bracket 7 is welded at the inlet of the central funnel 1; the second time relay is electrically connected to the control circuit of the travel limit switch 6; the travel limit switch 6 is provided with a rod column 8, and the rod column 8 is in a horizontal state.

[0030] In the above device, the model of the rotary paddle level switch 3 is UZK-20BGA200 / GJY, the model of the travel limit switch 6 is WLNJ-2 / OMRON, and the model of the time relay is H3Y-2 / DC24V / 5S / OMRON.

[0031] In the above device, the rotary paddle level switch 3, the travel limit switch 6, the first time relay and the second time relay are all connected to the normally closed point to prevent the control circuit from being disconnected and causing the material blockage detection to fail.

[0032] In the above device, the time of the first time relay and the second time relay are both adjusted to 1 second, which can filter out the triggering of the rotary level switch 3 caused by instantaneous material falling obstruction and the triggering of the travel limit switch 6 caused by accidental coal block falling.

[0033] In the above device, the hopper observation door 2 is fixed by a latch and a hinge, so that it is convenient to open the rotary blocking switch 3 for inspection and maintenance.

[0034] In the above device, the protective cover 4 is made of waste rollers and is a hollow semi-cylinder, and its size can completely cover the blades 5 of the rotary blocking switch 3.

[0035] In the above device, the bracket 7 is made of two rectangular steel plates arranged vertically, and two strip grooves are opened in the middle of each rectangular steel plate, and the size of the strip grooves is made according to the actual situation on site. The strip grooves on different rectangular steel plates are fixed by fasteners (the fasteners can be fastening bolts), and the travel limit switch 6 can be adjusted by adjusting the strip grooves and fasteners on the bracket 7 to move up, down, left and right.

[0036] Here’s how it works:

[0037] Under normal conditions, the blade 5 of the rotary paddle level switch 3 rotates, and the rod 8 of the travel limit switch 6 is horizontal.

[0038] When blockage occurs, the accumulated coal first buries the blade 5 of the rotary level switch 3 from bottom to top. The rotation of the blade 5 is blocked and a fault signal is sent out. After a 1-second delay of the time relay, an alarm is issued and the belt is stopped. After the accumulated coal is cleared, the blade 5 automatically resumes rotation and the signal returns to normal. When the rotary detection device does not detect blockage, the accumulated coal spills out from the center funnel 1 and impacts the rod 8 of the travel limit switch 6. The rod 8 is deformed and a fault signal is sent out. After a 1-second delay of the time relay, an alarm is issued and the belt is stopped. After the accumulated coal is cleared, the rod 8 automatically returns to a horizontal level and the signal returns to normal.

[0039] When any set of detection devices is damaged, the set of detection devices can be temporarily sealed and another set can be put into use to quickly resume production. After the bracket 7 is welded, if the position of the travel limit switch 6 is found to be inappropriate during operation, the travel limit switch 6 can be freely adjusted by adjusting the bracket 7.

Claims

1. A comprehensive detection device for blockage of the central hopper of a ship loader, characterized by: It comprises a rotation-resistance detection device and a travel-type detection device located on both sides of a central funnel (1), wherein The rotary resistance detection device comprises a hopper observation door (2) installed behind a material drop point of a central hopper (1), a circular hole opened in the middle of the hopper observation door (2), a rotary resistance material blocking switch (3) fixed to the hopper observation door (2) through the circular hole, a blade (5) electrically connected to the rotary resistance material blocking switch (3), a protective cover (4) installed on the hopper observation door (2), and a first time relay electrically connected to a control circuit of the rotary resistance material blocking switch (3), wherein the protective cover (4) is located above the rotary resistance material blocking switch (3) and the blade (5), and the protective cover (4) and the blade (5) are both located in the central hopper (1); The travel detection device comprises a bracket (7) welded at the inlet of the central funnel (1), a travel limit switch (6) fixed on the bracket (7), and a second time relay electrically connected to a control circuit of the travel limit switch (6); a rod column (8) is provided on the travel limit switch (6), and the rod column (8) is in a horizontal state.

2. A comprehensive detection device for blockage of the central hopper of a ship loader according to claim 1, characterized in that: The model of the rotary blocking switch (3) is UZK-20BGA200 / GJY, the model of the travel limit switch (6) is WLNJ-2 / OMRON, and the models of the first time relay and the second time relay are both H3Y-2 / DC24V / 5S / OMRON.

3. A comprehensive detection device for blockage of the central hopper of a ship loader according to claim 1, characterized in that: The hopper observation door (2) is installed at the lower left corner behind the drop point of the center hopper (1), and the hopper observation door (2) is fixed to the center hopper (1) by means of a latch and a hinge.

4. A comprehensive detection device for blockage of the central hopper of a ship loader according to claim 2, characterized in that: The protective cover (4) is a hollow semi-cylindrical structure, the size of which is adapted to the blade (5) of the rotary blocking switch (3), and is welded to the funnel observation door (2).

5. A comprehensive detection device for blockage of the central hopper of a ship loader according to claim 1, characterized in that: The bracket (7) comprises two rectangular steel plates arranged vertically, each rectangular steel plate having a plurality of strip grooves in the middle thereof, the strip grooves on different rectangular steel plates being fixed by fasteners, and the bracket (7) adjusts the up, down, left, and right movements of the travel limit switch (6) by means of the strip grooves and the fasteners.

6. A comprehensive detection device for blockage of the central hopper of a ship loader according to claim 5, characterized in that: Two strip grooves are opened in the middle of each rectangular steel plate, and the fasteners are fastening bolts.

7. A comprehensive detection device for blockage of the central hopper of a ship loader according to any one of claims 1 to 6, characterized in that: The delay of the first time relay and the second time relay is 1~3 seconds.

Images