Helical blade of conveyor

Abstract

The utility model relates to the technical field of spiral blades of conveyors, in particular to a spiral blade of a conveyor, which comprises a rotary driving shaft, the rotary driving shaft is of a sectional structure and is formed by splicing a plurality of groups of independent sectional shaft bodies, and different sectional shaft bodies are screwed and fixed in a threaded splicing mode. The threads at the connecting positions of the different segmented shaft bodies are arranged in the direction opposite to the rotating direction of the rotating driving shaft. And the spiral blade is also of a sectional structure and is formed by jointly splicing a plurality of groups of independent sectional blades, the number of the sectional blades is the same as that of the sectional shaft bodies, and the sectional blades are arranged on the outer sides of the corresponding sectional shaft bodies.

Description

Technical Field

[0001] This utility model relates to the field of conveyor spiral blade technology, and in particular to a conveyor spiral blade. Background Technology

[0002] In the field of conveyor technology, the helical blade is the core component of material conveying. It continuously pushes materials through the drive of a rotating drive shaft. Currently, traditional helical blades mostly adopt an integral structure, that is, the rotating drive shaft and the helical blade are integrally formed or fixedly connected. For example, Chinese patent CN213201213U discloses a helical blade and a helical conveyor. This patent includes a propulsion helical blade unit, a toothed helical blade unit and a rotating shaft. Multiple propulsion helical blade units and multiple toothed helical blade units are alternately arranged and fixedly connected end to end to form a helical blade, which is fixedly connected to the rotating shaft. The outer edge of the toothed helical blade unit is provided with continuous serrations. It also discloses a helical conveyor, including the helical blade of the helical conveyor mentioned above, as well as a trough, a feed inlet, a discharge outlet and a drive device. The helical blade of the helical conveyor is set in the trough. The two ends of the rotating shaft are rotatably connected to the side walls at both ends of the trough. One end of the trough is provided with a feed inlet and the other end of the trough is provided with a discharge outlet. The drive device can drive the rotating shaft to rotate.

[0003] Although this blade structure, by alternating multiple propulsion spiral blade units and multiple toothed spiral blade units, can ensure uniform mixing of materials while conveying them, this type of blade has the following drawbacks:

[0004] ① The spiral blades and drive shafts of large conveyors are bulky and heavy, resulting in high overall transportation costs. Furthermore, they require specialized equipment for hoisting during on-site installation, making operation complex and inflexible.

[0005] ② When the integral structure is partially damaged (such as blade wear or shaft deformation), the entire helical blade assembly needs to be disassembled and replaced, resulting in long downtime and significantly increased maintenance costs. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a conveyor spiral blade. The above technical objective is achieved through the following technical solution:

[0007] A conveyor helical blade, comprising:

[0008] A rotary drive shaft, which is a segmented structure, is composed of multiple independent segmented shafts. The different segmented shafts are screwed together and fixed by threaded splicing. The threads at the connection positions between the different segmented shafts are set in the opposite direction to the rotation direction of the rotary drive shaft.

[0009] The spiral blade is also a segmented structure, consisting of multiple independent segments spliced ​​together. The number of segments is the same as the number of segments on the shaft, and the segments are located on the outside of the corresponding segments.

[0010] Furthermore, the segmented shaft includes a shaft housing and a replaceable inner core. The replaceable inner core is inserted into the shaft housing. Side slots are provided on both sides of the shaft housing. The two ends of the replaceable inner core are provided with integrally formed lateral limiting blocks. The lateral limiting blocks protrude outward from the side slots. The segmented blades are disposed outside the lateral limiting blocks.

[0011] Furthermore, the replaceable inner core has a fixing groove inside, a fixing ring inside the fixing groove, and a mounting hole on the surface of the fixing ring. The fixing ring is fixed to the outside of the replaceable inner core and presses the replaceable inner core into the inside of the shaft housing.

[0012] Furthermore, a connecting sleeve is provided on one side of the replaceable inner core, and the inner wall of the connecting sleeve is provided with internal threads. A connecting pipe is provided on one side of the shaft housing, and a connecting block is provided inside the connecting pipe. The outer wall of the connecting block is provided with external threads, and a mating groove is provided between the connecting pipe and the connecting block.

[0013] Furthermore, the surface of the lateral limiting block is provided with a blade stabilizing block, and the segmented blade is disposed on the blade stabilizing block.

[0014] Furthermore, the connecting positions of the different segmented blades are pressed against each other and fixed together by tightening screws.

[0015] In summary, this utility model has the following beneficial effects:

[0016] ① The shaft and blades of this utility model are both designed in segments and modules, which reduces the difficulty of transporting large components and saves maintenance costs by only replacing the corresponding segments when there is partial damage.

[0017] ②The segmented structure of this utility model adopts a thread anti-loosening mechanism that is opposite to the rotation direction of the shaft. When the drive shaft is running, the thread becomes tighter and tighter, which effectively avoids loosening problems caused by vibration or load and improves the running stability.

[0018] ③The outer shell of this utility model bears the main wear, while the inner core only contacts the material through the lateral limiting block. After wear, the outer shell or the inner core can be replaced separately, reducing maintenance costs. Attached Figure Description

[0019] The accompanying drawings, which are provided to further illustrate the present invention and form part of this application, do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a schematic diagram of the segmented blades in this utility model;

[0022] Figure 3 This is a perspective view of the segmented shaft in this utility model;

[0023] Figure 4 This is a side view of the segmented shaft in this utility model.

[0024] In the figure, 1. Rotary drive shaft; 101. Segmented shaft body; 1011. Shaft body housing; 1012. Replaceable inner core; 1013. Lateral limiting block; 1014. Fixing ring; 1015. Connecting sleeve; 1016. Connecting pipe; 1017. Connecting block; 1018. Blade stabilizing block; 2. Helical blade; 201. Segmented blade. Detailed Implementation

[0025] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figure 1 To be continued Figure 4 The detailed description of the embodiments will make this clear. All structural details mentioned in the following embodiments are based on the accompanying drawings.

[0026] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings. Example

[0027] A conveyor helical blade, comprising:

[0028] The rotary drive shaft 1 has a segmented structure, consisting of multiple independent segmented shafts 101 joined together. In this embodiment, a total of 11 segmented shafts 101 are joined together to form the complete rotary drive shaft 1. The different segmented shafts 101 are screwed together and fixed. In order not to affect the rotation function of the rotary drive shaft 1, the threads at the connection positions of the different segmented shafts 101 are set in the opposite direction to the rotation direction of the rotary drive shaft 1. During the rotation of the rotary drive shaft 1, the threads between the different segmented shafts 101 become tighter and tighter as they rotate, avoiding loosening due to vibration or load. The segmented design of the rotary drive shaft 1 reduces the difficulty of transporting large components, allows for flexible on-site assembly, and when partial damage occurs, only the corresponding segment needs to be replaced, without replacing the entire shaft, thus saving costs.

[0029] The spiral blade 2 is also a segmented structure, consisting of eleven independent segments 201 spliced ​​together. The number of segments 201 is the same as the number of segments 101. The segments 201 are set on the outside of the corresponding segments 101. The segments 201 correspond one-to-one with the segments 101, ensuring that the corresponding segments 201 are driven to rotate during the rotation of the rotary drive shaft 1.

[0030] The segmented shaft 101 includes a shaft housing 1011 and a replaceable inner core 1012. The replaceable inner core 1012 is inserted into the shaft housing 1011, which provides external support. The replaceable inner core 1012 is directly connected to the segmented blades 201, realizing the core function of the modular segmented design. Side slots are provided on both sides of the shaft housing 1011, and integrally formed lateral limiting blocks 1013 are provided at both ends of the replaceable inner core 1012. The lateral limiting blocks 1013 protrude outward from the side slots. The blade 201 is set outside the lateral limiting block 1013, and the two are interlocked to prevent axial displacement. During the rotation of the rotary drive shaft 1, only the lateral limiting blocks 1013 on both sides of the replaceable inner core 1012 are in direct contact with the material to be conveyed, which greatly extends the service life of the replaceable inner core 1012. Most of the impact wear of the incoming material is borne by the shaft housing 1011. When the shaft housing 1011 is worn, the housing part can be replaced separately. When the blade is damaged, the inner core part can be replaced separately, which greatly reduces maintenance costs.

[0031] The replaceable inner core 1012 has a fixing groove inside, and a fixing ring 1014 is provided inside the fixing groove. The surface of the fixing ring 1014 has a mounting hole. The fixing ring 1014 is fixed to the outside of the replaceable inner core 1012 and presses the replaceable inner core 1012 into the inside of the shaft housing 1011.

[0032] A connecting sleeve 1015 is provided on one side of the replaceable inner core 1012. The inner wall of the connecting sleeve 1015 is provided with an internal thread. A connecting tube 1016 is provided on one side of the shaft housing 1011. A connecting block 1017 is provided inside the connecting tube 1016. The outer wall of the connecting block 1017 is provided with an external thread. A mating groove is provided between the connecting tube 1016 and the connecting block 1017. The overall structural design of the connecting sleeve 1015, the connecting tube 1016 and the connecting block 1017 can realize the quick docking and fixing between the segmented shafts 101. The internal thread of the connecting sleeve 1015 is screwed into the external thread of the connecting block 1017. The connecting sleeve 1015 is guided into the correct position through the mating groove, forming a stable fitting connection between the different segmented shafts 101.

[0033] The surface of the lateral limiting block 1013 is provided with a blade stabilizing block 1018, and the segmented blade 201 is disposed on the blade stabilizing block 1018. The blade stabilizing block 1018 is used to enhance the connection strength between the segmented blade 201 and the shaft, and to prevent the blade from shifting or falling off.

[0034] The different segment blades 201 are connected to each other and fixed together by tightening screws.

[0035] The above description is a further detailed explanation of the present utility model in conjunction with specific embodiments, and it should not be considered that the specific implementation of the present utility model is limited to this. For those skilled in the art to which the present utility model pertains and related fields, any extensions, operation methods, and data substitutions made based on the technical solution concept of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A conveyor spiral blade, characterized in that, include: Rotary drive shaft (1), the rotary drive shaft (1) is a segmented structure, which is composed of multiple independent segmented shaft bodies (101) spliced ​​together. Different segmented shaft bodies (101) are screwed and fixed together by thread splicing, and the threads at the connection positions between different segmented shaft bodies (101) are set in the opposite direction to the rotation direction of the rotary drive shaft (1). The spiral blade (2) is also a segmented structure, which is composed of multiple independent segmented blades (201) spliced ​​together. The number of segmented blades (201) is the same as the number of segmented shafts (101). The segmented blades (201) are located on the outside of the corresponding segmented shafts (101).

2. The conveyor spiral blade according to claim 1, characterized in that: The segmented shaft (101) includes a shaft housing (1011) and a replaceable inner core (1012). The replaceable inner core (1012) is inserted into the shaft housing (1011). Side slots are provided on both sides of the shaft housing (1011). The two ends of the replaceable inner core (1012) are provided with integrally formed lateral limiting blocks (1013). The lateral limiting blocks (1013) protrude outward from the side slots. The segmented blades (201) are located outside the lateral limiting blocks (1013).

3. A conveyor spiral blade according to claim 2, characterized in that: The replaceable inner core (1012) has a fixing groove inside, and a fixing ring (1014) is provided inside the fixing groove. The surface of the fixing ring (1014) has a mounting hole. The fixing ring (1014) is fixed to the outside of the replaceable inner core (1012) and presses the replaceable inner core (1012) into the inside of the shaft housing (1011).

4. A conveyor spiral blade according to claim 3, characterized in that: A connecting sleeve (1015) is provided on one side of the replaceable inner core (1012), and the inner wall of the connecting sleeve (1015) is provided with an internal thread. A connecting pipe (1016) is provided on one side of the shaft housing (1011), and a connecting block (1017) is provided inside the connecting pipe (1016). The outer wall of the connecting block (1017) is provided with an external thread, and a mating groove is provided between the connecting pipe (1016) and the connecting block (1017).

5. A conveyor spiral blade according to claim 4, characterized in that: The surface of the lateral limiting block (1013) is provided with a blade stabilizing block (1018), and the segmented blade (201) is disposed on the blade stabilizing block (1018).

6. A conveyor spiral blade according to claim 5, characterized in that: The different segmented blades (201) are connected to each other at their respective connection positions and are fixed together by tightening screws.

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