Single shaft screw wind locking and discharging device for cage type crusher

Abstract

This utility model applies to the technical field of environmental protection dust removal equipment in mining, and relates to a single-shaft spiral airlock unloading device for a cage crusher. It includes a drive motor, a U-shaped housing, an inverted U-shaped anti-backflow cover, and a single spiral conveyor shaft. The spiral conveyor shaft is located inside the U-shaped housing and includes a spiral shaft and spiral blades. The drive motor is located outside the U-shaped housing and connected to the spiral conveyor shaft. The drive motor is equipped with temperature and stall sensors. An inverted U-shaped anti-backflow cover is installed at the upper end of the U-shaped housing. Together, they form a compact circular cylindrical space. The discharge port at the tail of the U-shaped housing has a downward inclination. This device has a small overall size, avoids backflow, and has excellent airlock performance.

Description

Technical Field

[0001] This utility model applies to the field of environmental protection dust removal equipment for mining, and relates to a single-shaft spiral airlock unloading device for cage crushers. Background Technology

[0002] Currently, most coal mine gangue comprehensive treatment projects use cage crushers to turn gangue into fine powder. However, cage crushers have high discharge air pressure (1-2MPa), which causes a large amount of dust to form from the gangue fine powder. As this dust spreads, it causes significant pollution to the work area and poses a huge threat to the health of front-line operators.

[0003] Regarding the dust problem in crushing equipment, the applicant previously applied for a double-helix airlock unloading device (application number: 2023225936180). This device mainly consists of a double-helix structure and a 90-degree airlock baffle at the tail. The discharge end of this airlock unloading device has a U-shaped opening, causing powder to return from the upper opening of the U-shaped structure at the end, affecting equipment efficiency. Furthermore, the large width of the double-shaft structure leads to uneven stress on the two shafts, easily causing blockage and material accumulation. The overall sealed casing prevents unloading after blockage, making maintenance difficult. The airlock effect of the 90-degree airlock baffle at the tail is also unsatisfactory. Therefore, addressing the shortcomings of the existing technology, this design presents a more structurally sound single-shaft helical airlock unloading device for cage crushers. Utility Model Content

[0004] The purpose of this invention is to provide a single-shaft spiral airlock unloading device for cage crushers, which overcomes the problems of material return, blockage and stockpiling without detection, and large size in the existing technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A single-shaft spiral airlock unloading device for a cage crusher includes a drive motor, a U-shaped housing, an inverted U-shaped anti-backflow cover plate, and a single spiral conveying shaft. The spiral conveying shaft is located inside the U-shaped housing and includes a spiral shaft and spiral blades. The drive motor is located outside the U-shaped housing and is connected to the spiral conveying shaft. Temperature and stall sensors are also installed on the drive motor. An inverted U-shaped anti-backflow cover plate is provided at the upper part of the end of the U-shaped housing. The two together form a compact circular cylindrical space. The discharge port at the tail of the U-shaped housing has a downward inclination angle.

[0006] A counterweight wind deflector is installed at the rear of the U-shaped casing.

[0007] One end of the screw conveyor shaft is connected to the drive shaft of the drive motor by a rolling coupling, and the other end is connected to a fixed coupling set at the tail of the U-shaped housing. The whole structure is horizontally and coaxially connected.

[0008] The bottom of the U-shaped casing has two 300mm×300mm discharge ports for material discharge in case of equipment failure.

[0009] A rubber pad is provided on the heavy hammer lock baffle, and a sealing gasket is provided at the position where the spiral shaft passes through the housing.

[0010] The beneficial effects of this utility model are: This invention uses a single-axis screw and is equipped with temperature and stall sensors to avoid damage to itself and other supporting equipment caused by stall operation. The overall size of the equipment is small, and its width is compatible with the width of the subsequent conveyor belt under the same conveying capacity design.

[0011] The tail of the shell is designed as a circular structure composed of two U-shapes, which controls the gap between the spiral blades and the shell and avoids material backflow.

[0012] The lower part of the shell is designed with a discharge port to solve the problem of material accumulation and blockage when the equipment is not operating properly.

[0013] The heavy hammer lock baffle is equipped with a rubber pad to reduce vibration and increase sealing. A sealing gasket is provided at the position where the screw shaft passes through the housing, which effectively solves the problem of dust generated during the crushing operation of the cage crusher. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the single-axis spiral airlock device of this utility model; Figure 2 yes Figure 1 The right view; In the diagram, 1. drive motor, 2. temperature and stall sensor, 3. U-shaped housing, 4. discharge port, 5. "Inverted U" shaped anti-backflow cover, 6. counterweight lock air baffle, 7. screw conveyor shaft, 8. fixed coupling. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0016] This utility model relates to a single-shaft spiral airlock unloading device for a cage crusher. The device includes a drive motor 1, a spiral conveyor shaft 7, and a U-shaped housing 3. The device is positioned below the cage crusher's discharge port and connected to a conveyor belt. When the cage crusher generates a large amount of dust, the fine powder material is rapidly settled in the enclosed space of the spiral conveyor, and then discharged to the subsequent conveyor belt via a tail-end counterweight airlock baffle. The single-shaft spiral airlock device has a small diameter, adaptable to the width of the conveyor belt, effectively achieving dust removal.

[0017] See Figure 1This device includes a U-shaped housing 3. The left side of the U-shaped housing 3 contains a motor base for housing the drive motor 1. Inside the U-shaped housing 3 is a screw conveyor shaft 7. One end of the screw conveyor shaft 7 is connected to the drive shaft of the drive motor 1 via a rolling coupling, and the other end is connected to a fixed coupling 8 at the tail of the U-shaped housing 3, forming a horizontal, coaxial connection. The drive shaft of the drive motor 1 drives the screw conveyor shaft 7 to rotate. The drive motor 1 is a Y-series explosion-proof motor, suitable for dusty environments. A rectangular feed inlet is located at the top of the U-shaped housing 3, overlapping the front equipment. Two discharge ports 4 are located at the bottom of the U-shaped housing 3 for material discharge in case of equipment failure. An inverted U-shaped anti-backflow cover 5 is located at the upper end of the housing 3. Together with the inverted U-shaped cover 5, they form a compact circular space to prevent backflow. The inverted U-shaped anti-backflow cover 5 is also easily disassembled, facilitating maintenance and replacement of components inside the U-shaped housing 3. The U-shaped outer shell 3 is equipped with a heavy hammer airlock baffle 6 at the rear. The internal spiral conveyor shaft 7 rotates, which forces the fine materials and dust entering the feed inlet to accumulate at the end. Once full, the baffle will be pushed open to discharge the material, thus achieving the purpose of airlocking, dust removal, and material feeding.

[0018] The screw conveyor shaft 7 consists of a screw shaft and screw blades. Under the action of centrifugal force and friction force provided by the screw conveyor shaft 7, the material is conveyed from the feed port to the discharge port. The screw shaft is subjected to downward pressure and lateral resistance. Therefore, the screw shaft is made of high-strength and high-toughness steel pipe, and the material is selected as high carbon steel to ensure the shaft strength, so that the motor drive shaft and the screw shaft can be driven smoothly, improve the service life of the equipment, and make the working performance more reliable and stable.

[0019] The single-shaft spiral airlock unloading device is designed with a single spiral conveyor shaft, resulting in a small overall size. Its width is compatible with the width of the subsequent conveyor belt under the same conveying capacity design. The discharge port can easily overlap with the belt, and the discharge is not easy to leak outside the conveyor belt. At the same time, the small height gap results in less secondary dust and a significant airlock effect.

[0020] The single-shaft spiral airlock unloading device adds a rubber pad at the tail counterweight airlock baffle 6 to reduce tail baffle wear. A sealing gasket is added at the position where the spiral shaft passes through the housing. The feed port connecting flange is connected by bolts. The addition of rubber pads reduces vibration and increases sealing performance, effectively solving the dust problem caused by the cage crusher during crushing.

[0021] All contents not described in detail in this specification are existing technologies known to those skilled in the art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-shaft spiral airlock unloading device for a cage crusher, characterized in that: It includes a drive motor (1), a U-shaped housing (3), an inverted U-shaped anti-backflow cover (5) and a single spiral conveyor shaft (7). The spiral conveyor shaft (7) is located inside the U-shaped housing (3) and includes a spiral shaft and spiral blades. The drive motor (1) is located outside the U-shaped housing (3) and connected to the spiral conveyor shaft (7). Temperature and stall sensors (2) are also installed on the drive motor (1). An inverted U-shaped anti-backflow cover (5) is provided at the upper end of the U-shaped housing (3). The two together form a compact circular cylindrical space. The discharge port at the tail of the U-shaped housing (3) has a downward tilt angle.

2. The single-shaft spiral airlock unloading device for a cage crusher according to claim 1, characterized in that: The tail of the U-shaped shell (3) is equipped with a heavy hammer wind baffle (6).

3. The single-shaft spiral airlock unloading device for a cage crusher according to claim 1, characterized in that: One end of the spiral conveying shaft (7) is connected to the transmission shaft of the drive motor (1) by a rolling coupling, and the other end is connected to the fixed coupling (8) provided at the tail of the U-shaped housing (3), and the whole is horizontally and coaxially connected.

4. The single-shaft spiral airlock unloading device for a cage crusher according to claim 1, characterized in that: The bottom of the U-shaped shell (3) is designed with two 300mm×300mm discharge ports (4) for material discharge in case of equipment failure.

5. The single-shaft spiral airlock unloading device for a cage crusher according to claim 2, characterized in that: A rubber pad is provided on the weighted windproof baffle (6), and a sealing gasket is provided at the position where the spiral shaft passes through the housing.

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