A device for preventing the jumping of a shaftless helical blade

Abstract

The utility model discloses a prevent no -shaft spiral vane jumping device, the utility model relates to material conveying equipment technical field. Including: the shell assembly is rotated and is connected with spiral shaft assembly in the inner wall of shell assembly, the outer wall fixedly connected with gear box of spiral shaft assembly, the input of gear box is fixedly connected with speed -reducing motor, the inner wall fixed mounting of shell assembly has prevented vane jumping device, this device is through setting prevents vane jumping device, through the rolling contact of rotary drum and spiral shaft assembly, provides reverse restriction force when vane produces jumping tendency under external force, directly inhibits the jumping amplitude, and this kind of structure design can effectively respond to the radial jumping caused by uneven sludge viscosity, impurity impact etc, ensure that spiral vane runs stably, and the device reaches the purpose that prevents no -shaft spiral vane jumping device.

Description

Technical Field

[0001] This utility model relates to the field of material conveying equipment technology, specifically to a device for preventing shaftless spiral blades from jumping. Background Technology

[0002] Shaftless screw conveyors are widely used in material conveying, especially suitable for conveying complex materials such as viscous, fibrous, and easily entangled materials. Their unique shaftless design gives them significant advantages and characteristics in the conveying process. With the design concept of "shaftless is better than shafted", shaftless screw conveyors demonstrate unique value in complex working conditions by being highly efficient and durable. For industrial users, accurately matching material characteristics with equipment parameters and combining scientific operation and maintenance management can maximize their conveying efficiency. Whether dealing with municipal sludge or chemical raw materials, this equipment is always a reliable "invisible force" in the industrial conveying chain.

[0003] However, existing shaftless screw conveyors have many problems in actual operation. Due to the lack of a central shaft for support, the screw blades are prone to jumping when conveying materials due to uneven material distribution, changes in impact force, and other factors. Once the blades jump, it will not only reduce the material conveying efficiency, but also aggravate the wear between the blades and the conveying shell, shortening the service life of the equipment. At the same time, the vibration and noise generated by the jumping blades will also have an adverse impact on the working environment, increase equipment maintenance costs and safety hazards. In addition, when conveying some special materials, the jumping blades may also cause problems such as material spillage and blockage, affecting the continuity of production and product quality.

[0004] Therefore, how to effectively solve the problem of blade runout in shaftless screw conveyors and improve the stability, reliability and service life of the equipment has become an urgent technical challenge. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a device to prevent shaftless screw blades from jumping, which solves the problem that existing shaftless screw conveyors are prone to jumping during actual operation due to the lack of a central shaft support, caused by uneven material distribution and changes in impact force.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a device for preventing shaftless helical blades from jumping, comprising: a housing assembly, a helical shaft assembly rotatably connected to the inner wall of the housing assembly, a gearbox fixedly connected to the outer wall of the helical shaft assembly, a geared motor fixedly connected to the input end of the gearbox, and a device for preventing blade jumping fixedly installed on the inner wall of the housing assembly; the device for preventing blade jumping includes a rotating drum, threaded cylinders are rolledly connected to the outer walls of both sides of the rotating drum via ball bearings, and the outer walls of the ball bearings are rolledly connected to the outer walls of the rotating drum; a support member is threadedly connected to the outer wall of the threaded cylinder, and a screw groove is formed in the wall of the support member.

[0009] Preferably, the outer wall of the support member is fixedly installed to the inner wall of the housing assembly by screws, and the screws are threadedly connected to the inner wall of the housing assembly, and the outer wall of the rotating roller is rollingly connected to the outer wall of the spiral shaft assembly.

[0010] Preferably, a baffle is fixedly connected to the outer wall of the threaded cylinder, and a hexagonal plate is fixedly connected to the outer wall of the baffle.

[0011] Preferably, a spring block is fixedly connected to the side of the baffle away from the hexagonal plate. The spring block is made of elastic material and is arranged in a circular array along the central axis of the baffle. The outer wall of the spring block is pressed and fixed to the outer wall of the support member.

[0012] (III) Beneficial Effects

[0013] This invention provides a device for preventing the runout of shaftless helical blades. It has the following beneficial effects:

[0014] (i) The device for preventing the jumping of shaftless spiral blades transmits the limiting force through rolling contact between the rotating drum and the spiral shaft assembly. The ball bearings reduce the frictional resistance between the rotating drum and the threaded cylinder, reducing the wear between the components. At the same time, the low friction between the blades and the rotating drum reduces the wear between the blades and the housing assembly, lowers the equipment failure rate, extends the overall service life of the shaftless spiral conveyor, and reduces the cost of equipment replacement and maintenance.

[0015] (ii) The device for preventing shaftless helical blades from jumping is fixed to the housing assembly by screws through the support member. The threaded cylinder is threadedly connected to the support member. The threaded cylinder can be easily rotated with the help of the hexagonal plate to adjust the relative position of the rotating drum and the blade, which facilitates the replacement and maintenance of the rotating drum. The spring block on the baffle is pressed and fixed to the support member, which can enhance the stability of the threaded connection, prevent the threaded cylinder from loosening due to vibration, and improve the adaptability of the device under complex working conditions.

[0016] (III) The device for preventing the jumping of shaftless spiral blades, by setting up a device to prevent the blade jumping, provides a reverse limiting force when the blades tend to jump due to external force through the rolling contact between the rotating drum and the spiral shaft assembly, directly suppressing the jumping amplitude. This structural design can effectively deal with radial jumping caused by uneven sludge viscosity, impurity impact, etc., ensure the smooth operation of the spiral blades, avoid material conveying interruption or efficiency reduction due to jumping, and ensure continuous and stable sludge conveying. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the blade jumping prevention device of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the support component of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the baffle of this utility model.

[0021] In the diagram: 1. Gear motor; 2. Gearbox; 3. Housing assembly; 4. Screw shaft assembly; 5. Device to prevent blade jumping; 51. Rotating drum; 52. Support component; 53. Hexagonal plate; 54. Baffle; 55. Spring block; 56. Threaded cylinder; 57. Ball bearing. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4This utility model provides a technical solution: a device for preventing shaftless spiral blades from jumping, comprising: a housing assembly 3, a spiral shaft assembly 4 rotatably connected to the inner wall of the housing assembly 3, a gearbox 2 fixedly connected to the outer wall of the spiral shaft assembly 4, a reduction motor 1 fixedly connected to the input end of the gearbox 2, and a blade jumping prevention device 5 fixedly installed on the inner wall of the housing assembly 3; the blade jumping prevention device 5 includes a rotating drum 51, and threaded cylinders 56 are tactilely connected to the outer walls of both sides of the rotating drum 51 via ball bearings 57, and the outer walls of the ball bearings 57 are tactilely connected to the outer walls of the rotating drum 51; the baffle 54 and hexagonal plate 53 on the outer wall of the threaded cylinder 56 facilitate the operator to rotate the threaded cylinder 56 with tools to rotate the threaded cylinder 56 out of the support member 52, so as to facilitate the replacement of the rotating drum 51; the outer wall of the threaded cylinder 56 is threadedly connected to the support member 52, and the outer wall of the support member 52 is fixedly installed to the inner wall of the housing assembly 3 by screws; the outer wall of the rotating drum 51 is tactilely connected to the outer wall of the spiral shaft assembly 4.

[0024] A baffle 54 is fixedly connected to the outer wall of the threaded cylinder 56, and a hexagonal plate 53 is fixedly connected to the outer wall of the baffle 54. A spring block 55 is fixedly connected to the side of the baffle 54 away from the hexagonal plate 53, and the spring blocks 55 are arranged in a circular array along the central axis of the baffle 54. The spring blocks 55 arranged in a circular array on the baffle 54 are pressed and fixed to the outer wall of the support member 52, which can provide a certain pre-tightening force after the threaded cylinder 56 is adjusted into place, enhance the stability of the threaded connection, and prevent the threaded cylinder 56 from loosening due to vibration during equipment operation. The outer wall of the spring block 55 is pressed and fixed to the outer wall of the support member 52.

[0025] A device for preventing shaftless helical blades from jumping is designed to effectively control the jumping of shaftless helical blades through the coordinated operation of various components, thereby ensuring the stability and efficiency of sludge conveying. Its overall structure is based on the shell assembly 3 as the basic load-bearing frame, and the core components are connected in an orderly manner to form a complete operating system.

[0026] In terms of power transmission and conveying operation, the geared motor 1 serves as the power source, and its output end is fixedly connected to the input end of the gearbox 2. Through the power conversion and transmission of the gearbox 2, the screw shaft assembly 4 is driven to rotate on the inner wall of the housing assembly 3. When the screw shaft assembly 4 rotates, the screw blades on its outer wall push the sludge and other materials to move inside the housing assembly 3, thereby completing the material conveying operation.

[0027] The working principle of a shaftless screw conveyor is similar to that of a traditional screw conveyor, but its core component—the screw blades—has no central shaft. When the material enters the U-shaped trough from the feed inlet, the motor drives the screw blades to rotate. Through the friction between the blades and the material, the material is pushed to the discharge outlet. This design prevents the material from getting tangled on the central shaft during the conveying process, making it particularly suitable for conveying easily tangled materials such as sludge and garbage.

[0028] Shaftless screw conveyors, with their unique centerless design, exhibit significant advantages in conveying highly viscous and easily entangled materials. They are widely used in industries such as municipal sewage treatment, food processing, and chemical raw material transportation. In municipal sludge treatment, they can efficiently transport sludge with high moisture content; in the food industry, they can achieve continuous and stable transmission of grains and powdery materials; and in the chemical field, they can also meet the transportation needs of corrosive and granular raw materials, making them an indispensable material conveying equipment in industrial production.

[0029] The anti-blade jumping device 5 is the core structure for achieving the anti-jumping function. It works through the cooperation of components such as the rotating drum 51, the support 52, and the threaded cylinder 56. The support 52 is fixed to the inner wall of the housing assembly 3 with screws, providing stable support for the entire anti-blade jumping device 5. The threaded cylinder 56 is threadedly connected to the support 52. The outer walls on both sides of the rotating drum 51 are rolledly connected to the threaded cylinder 56 through the balls 57. The outer wall of the rotating drum 51 maintains rolling contact with the outer wall of the screw shaft assembly 4. When the screw shaft assembly 4 is subjected to external forces (such as uneven sludge viscosity or impurity impact) during material conveying and tends to jump, the rotating drum 51 will contact the outer wall of the screw shaft assembly 4. Through the rolling friction between the two, a reverse limiting force is provided to the screw shaft assembly 4, thereby suppressing the jumping amplitude of the blades and ensuring smooth blade operation.

[0030] Meanwhile, the structural design of the device further enhances operational stability and adaptability. The baffle 54 and hexagonal plate 53 on the outer wall of the threaded cylinder 56 facilitate the operation of workers by rotating the threaded cylinder 56 with tools, allowing it to be rotated out of the support member 52 for easy replacement of the rotating drum 51. The ring-shaped array of spring blocks 55 on the baffle 54 presses and fixes itself to the outer wall of the support member 52, providing a certain preload after the threaded cylinder 56 is adjusted into place, enhancing the stability of the threaded connection and preventing the threaded cylinder 56 from loosening due to vibration during equipment operation. The ball bearings 57 reduce the frictional resistance between the rotating drum 51 and the threaded cylinder 56, making the rotation of the rotating drum 51 more flexible. This effectively limits blade jump and reduces wear between components, extending the service life of the equipment.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing shaftless helical blades from jumping, characterized in that, include: The housing assembly (3) has a spiral shaft assembly (4) rotatably connected to its inner wall, a gearbox (2) fixedly connected to its outer wall, a gear motor (1) fixedly connected to its input end, and a device (5) to prevent blade jumping fixedly installed on the inner wall of the housing assembly (3). The blade skipping device (5) includes a rotating drum (51), and the outer walls on both sides of the rotating drum (51) are connected to a threaded cylinder (56) by ball bearings (57). The outer walls of the ball bearings (57) are connected to the outer walls of the rotating drum (51), and the outer walls of the threaded cylinder (56) are connected to a support member (52) by threads.

2. A device for preventing runout of a shaftless helical blade according to claim 1, wherein: The outer wall of the support member (52) is fixedly installed to the inner wall of the housing assembly (3) by screws, and the outer wall of the rotating roller (51) is rolledly connected to the outer wall of the spiral shaft assembly (4).

3. A device for preventing runout of a shaftless helical blade as claimed in claim 1, wherein: A baffle (54) is fixedly connected to the outer wall of the threaded cylinder (56), and a hexagonal plate (53) is fixedly connected to the outer wall of the baffle (54).

4. A device for preventing runout of a shaftless helical blade according to claim 3, wherein: A spring block (55) is fixedly connected to the side of the baffle (54) away from the hexagonal plate (53), and the spring block (55) is arranged in a circular array along the central axis of the baffle (54).

5. A device for preventing runout of a shaftless helical blade as defined in claim 4, wherein: The outer wall of the spring block (55) is pressed and fixed to the outer wall of the support member (52).

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