Anti-extrusion device for discharging from raw salt bin

Abstract

The utility model relates to the technical field of crude salt production equipment especially is concerned on a kind of anti-extrusion device of crude salt stock bin discharging, it is characterized by: including stock bin body and the discharging twist cage located below stock bin body, twist cage shell is fixed in the bottom of stock bin body;Twist cage shell top is fixed with storage box, and storage box is communicated with the inside of twist cage shell, and the side of storage box close to stock bin body is communicated with the inside of stock bin body, and the top of storage box is hinged with top plate, and the inside of storage box is provided with extrusion plate, and the side of extrusion plate is fixed with connecting rod, and the end of connecting rod away from extrusion plate passes through the side wall of storage box and is fixed with moving block, and spring is fixed between moving block and the side wall of storage box, and fixed block is fixed on twist cage shell, and proximity switch is installed on fixed block, and controller is installed on the outer wall of stock bin body, motor and proximity switch are electrically connected with control machine, the present application has the technical effect of reducing spiral blade jamming condition, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of raw salt production equipment, and in particular to a raw salt silo discharge anti-squeezing device. Background Technology

[0002] In traditional sea salt drying processes, long-term natural weathering of the surrounding slopes of the crystallization ponds can lead to the accumulation of gravel within the ponds. During the harvesting of raw salt, this gravel is collected as associated minerals, resulting in the presence of large foreign objects such as stone bricks in the raw salt. This can cause the feed metering screw to become stuck, leading to accidents such as screw blade deformation. Such accidents not only damage the equipment but also require the removal and repair of the screw blades, which is time-consuming (4-8 hours), severely disrupting normal production and increasing maintenance costs and operational risks. Utility Model Content

[0003] In order to solve the problems existing in the prior art, this utility model provides a raw salt silo discharge anti-squeezing device to reduce the situation of material jamming on the spiral blade and reduce maintenance costs.

[0004] This utility model provides a raw salt silo discharge anti-squeezing device, which adopts the following technical solution: A raw salt silo discharge anti-squeezing device is characterized in that: it includes a silo body and a discharge auger located below the silo body. The discharge auger includes an auger shell, a main shaft and spiral blades. The main shaft is rotatably connected inside the auger shell. The spiral blades are fixed on the main shaft. The auger shell is fixed to the bottom of the silo body. A motor that drives the main shaft to rotate is fixed at one end of the auger shell. A storage bin is fixed on top of the auger shell, and the storage bin is connected to the inside of the auger shell. The side of the storage bin near the hopper body is connected to the inside of the hopper body. A top plate is hinged to the top of the storage bin. An extrusion plate is installed inside the storage bin. A connecting rod is fixed to one side of the extrusion plate. The end of the connecting rod away from the extrusion plate passes through the side wall of the storage bin and is fixed to a moving block. A spring is fixed between the moving block and the side wall of the storage bin. A fixing block is fixed on the auger shell, and a proximity switch is installed on the fixing block. A controller is installed on the outer wall of the hopper body. The motor and the proximity switch are electrically connected to the controller.

[0005] Optionally, the top plate is hinged to the storage box on the side closest to the hopper body via a hinge, and a locking device is provided on the side of the top plate away from the hinge, and the top plate is fixed to the storage box via the locking device.

[0006] Optionally, the locking element is a locking block, which is fixed below the top plate. The locking block has a slot on its side wall, and the pressing plate has a plug that engages with the slot on the side near the locking block.

[0007] Compared with the prior art, the present invention has the following technical effects: It can reduce the occurrence of accidents caused by foreign objects blocking the spiral blades, extend the service life of the equipment, significantly shorten the troubleshooting time, improve production efficiency, and reduce maintenance costs. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the structure of the storage box and the top plate in Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the extrusion plate, connecting rod, and moving block in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the locking block, slot, and insert block in Embodiment 2 of this utility model.

[0009] Explanation of reference numerals in the attached drawings: 1. Hopper body; 11. Support leg; 2. Discharge auger; 21. Auger shell; 22. Main shaft; 23. Spiral blade; 24. Motor; 3. Storage box; 31. Top plate; 4. Locking component; 41. Locking bolt; 42. Locking block; 421. Slot; 422. Insert block; 5. Extrusion plate; 51. Connecting rod; 52. Moving block; 53. Fixing block; 54. Spring. Detailed Implementation

[0010] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 The present invention will be described in further detail below.

[0011] Embodiment 1 of this utility model Reference Figures 1-3 This utility model discloses a raw salt silo discharge anti-squeezing device, including a silo body 1 and a discharge auger 2. Support legs 11 are fixed at the four corners of the bottom of the silo body 1. The discharge auger 2 is installed at the center of the bottom of the silo body 1. The discharge auger 2 includes an auger shell 21, a main shaft 22 and a spiral blade 23. The auger shell 21 is located at the bottom of the silo body 1. The main shaft 22 is rotatably connected inside the auger shell 21. The spiral blade 23 is fixed on the main shaft 22. A motor 24 for driving the main shaft 22 is fixed at one end of the auger shell 21.

[0012] A storage box 3 is provided above the auger housing 21. The bottom of the storage box 3 is fixed to the auger housing 21. The auger housing 21 and the storage box 3 are connected internally. The side of the storage box 3 near the hopper body 1 is welded and fixed to the outer wall of the hopper body 1. The storage box 3 is connected internally to the hopper body 1.

[0013] The top of the storage bin 3 is equipped with a top plate 31, which can be opened. One end of the top plate 31 is hinged to the top wall of the storage bin 3. A locking element 4 is provided on the side of the top plate 31 away from the hinge, which prevents the top plate 31 from being opened arbitrarily. The locking element 4 is a locking bolt 41, which fixes the top plate 31 and the storage bin 3. When a foreign object gets stuck in the spiral blade 23, the top plate 31 is opened to facilitate the removal of the foreign object, reducing maintenance costs and economic losses caused by production interruption.

[0014] An extrusion plate 5 is installed inside the storage bin 3. A connecting rod 51 is fixed to one end of the extrusion plate 5 away from the discharge port of the hopper body 1. The connecting rod 51 passes through the side wall of the storage bin 3 to the right. A moving block 52 is fixed to one end of the connecting rod 51 away from the extrusion plate 5. A fixing block 53 is fixed to the outer wall of the auger housing 21. The moving block 52 is a metal block. A proximity switch is fixed to the fixing block 53. The proximity switch is an inductive proximity switch.

[0015] A spring 54 is fixed between the movable block 52 and the side wall of the storage bin 3, and the spring 54 is sleeved on the connecting rod 51. A controller is installed on the support leg 11, and the controller is electrically connected to the motor 24 and the proximity switch. When the movable block 52 moves towards the fixed block 53 and contacts the fixed block 53, the proximity switch transmits a signal to the controller, which controls the motor 24 to stop rotating, thereby stopping the rotation of the main shaft 22 and the spiral blade 23 and preventing the spiral blade 23 from being continuously deformed by force. When the movable block 52 moves towards the fixed block 53, the spring 54 is stretched.

[0016] When the discharge auger 2 is working normally, the storage bin 3 will not contain any material. The raw salt in the hopper body 1 is transported through the discharge auger 2. When a large foreign object gets stuck on the spiral blade 23, the raw salt in the hopper body 1 will enter the storage bin 3. As the raw salt continues to enter, it will exert a rightward pressure on the extrusion plate 5, stretching the spring 54 and causing the moving block 52 to move towards the fixed block 53. When the moving block 52 contacts the fixed block 53, the controller will stop the motor 24 from rotating. The operator opens the top plate 31 to clean the foreign object from the shell. After the foreign object is cleaned, the raw salt in the storage bin 3 falls into the auger shell 21. The extrusion plate 5 is no longer under pressure. Under the elastic force of the spring 54, the moving plate moves away from the fixed block 53, and the extrusion plate 5 returns to its initial position under the action of the spring 54.

[0017] An alarm is installed on the hopper body 1. The alarm is electrically connected to the controller. When the moving block 52 and the fixed block 53 come into contact, the controller controls the alarm to sound. After receiving the alarm, the staff can shut down the equipment, open the top plate 31, and remove foreign objects.

[0018] Embodiment 2 of this utility model Reference Figure 4The locking element 4 is a locking block 42, which is located below the top plate 31 of the fixing block 53. A slot 421 is provided on the locking block 42, and an insert 422 is fixed to the side wall of the extrusion plate 5. When the spring 54 is in its normal state, the slot 421 is inserted into the insert 422, and the top plate 31 cannot be opened. When a large foreign object is stuck in the spiral blade 23, the raw salt in the storage box 3 will squeeze the extrusion plate 5, causing the extrusion plate 5 to move towards the fixing block 53. When the moving block 52 and the fixing block 53 come into contact, the insert 422 disengages from the slot 421, and the top plate 31 can then be opened.

[0019] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A device for preventing material squeezing during the discharge of raw salt from a silo, characterized in that: The hopper includes a hopper body (1) and a discharge auger (2) located below the hopper body (1). The discharge auger (2) includes an auger housing (21), a main shaft (22) and a spiral blade (23). The main shaft (22) is rotatably connected inside the auger housing (21). The spiral blade (23) is fixed on the main shaft (22). The auger housing (21) is fixed to the bottom of the hopper body (1). A motor (24) that drives the main shaft (22) to rotate is fixed at one end of the auger housing (21). A storage box (3) is fixed on the top of the auger housing (21). The storage box (3) is connected to the inside of the auger housing (21). The side of the storage box (3) near the hopper body (1) is connected to the inside of the hopper body (1). A top plate (31) is hinged to the top of the storage box (3). An extrusion plate (5) is installed inside the storage box (3). A connecting rod (51) is fixed on one side of the extrusion plate (5). The end of the connecting rod (51) away from the extrusion plate (5) passes through the side wall of the storage box (3) and is fixed with a moving block (52). A spring (54) is fixed between the moving block (52) and the side wall of the storage box (3). A fixing block (53) is fixed on the auger housing (21). A proximity switch is installed on the fixing block (53). A controller is installed on the outer wall of the hopper body (1). The motor (24) and the proximity switch are electrically connected to the controller.

2. The raw salt silo discharge anti-squeezing device according to claim 1, characterized in that: The top plate (31) is hinged to the storage box (3) on the side near the hopper body (1) by a hinge. A locking part (4) is provided on the side of the top plate (31) away from the hinge. The top plate (31) is fixed to the storage box (3) by the locking part (4).

3. The raw salt silo discharge anti-squeezing device according to claim 2, characterized in that: The locking component (4) is a locking block (42). The locking block (42) is fixed below the top plate (31). A slot (421) is provided on the side wall of the locking block (42). A plug (422) that is inserted into the slot (421) is fixed on the side of the extrusion plate (5) near the locking block (42).

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