Split type spiral blade convenient to replace

Abstract

The utility model discloses a split type helical blade convenient to replace, which relates to the technical field of split type helical blades and comprises a blade body, a cavity is arranged at one end of the blade body, a connecting block is arranged in the cavity, the other end of the connecting block is contacted with the inner wall of the cavity, and the other end of the connecting block is connected with the inner wall of the cavity. A pin block is fixedly mounted at one end of the connecting block, a plurality of mounting holes are formed in the inner wall of the blade body, and fixing pins are arranged in the mounting holes; the narrow planes of the left pin block and the right pin block abut against each other, the other ends of the pin blocks are tightly attached to the upper inner wall and the lower inner wall of the cavity, the fixing pins are installed in the pin holes, the left pin block and the right pin block are locked through the pin holes, and the left blade body and the right blade body are firmly attached by locking the pin blocks. And the problems that the left blade body and the right blade body are not firmly connected during normal work due to the influence of centrifugal force when the spiral blade works, so that the blade is separated and even some negative effects are caused are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of split spiral blades, and particularly relates to a split spiral blade which is convenient to replace. Background Technique

[0002] Spiral blades are common equipment in engineering production. Spiral blades are usually used for transporting or stirring materials. Since they are in direct contact with the materials and continuously rub during the working process, spiral blades are vulnerable parts. When transporting materials, a whole screw conveyor is mostly used. When each blade is damaged, the entire screw shaft needs to be replaced, resulting in a high maintenance cost.

[0003] For example, the existing patent (publication number: CN220949825U) discloses a split spiral blade which is convenient to replace, including a transmission shaft, a housing, a connecting block, a connecting groove, a space, a spring and a clamping plate. The characteristics are as follows: the housing is arranged outside the rotating shaft, and a connecting block is arranged at the front end inside the housing. The housing is closed through a first hook and a first clamping groove, so that the housing can be opened through the first hook and the first clamping groove, thereby realizing the disassembly function. And a first clamping block and a second clamping groove are respectively arranged on the first hook and the first clamping groove, so that after the first hook and the first clamping groove are connected, they are easily separated by vibration or external pressure. And connecting blocks and connecting grooves are respectively arranged at the front and rear ends inside the housing, so that two groups of spiral blades are connected, avoiding excessive pressure brought by transporting materials during transportation work, resulting in gaps between two adjacent blades and material entry and damage.

[0004] However, the split spiral blade which is convenient to replace designed above still has some disadvantages in actual use: although the split spiral blade can be easily disassembled, during work, since the axis of the spring passes through the center of rotation, it will inevitably be affected by centrifugal force, causing the spring to shake and the hook connection to be insecure, resulting in the left and right separation of the blades.

[0005] Therefore, we designed a split spiral blade which is convenient to replace to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a split spiral blade which is convenient to replace, so as to solve the problems put forward in the above background technique.

[0007] To solve the above technical problems, the present utility model provides a split spiral blade that is convenient to replace, including a blade body. One end of the blade body is provided with a cavity, and a connecting block is arranged inside the cavity. The other end of the connecting block is in contact with the inner wall of the cavity. One end of the connecting block is fixedly installed with a pin block. A plurality of mounting holes are arranged on the inner wall of the blade body, and fixing pins are arranged inside the mounting holes.

[0008] Further, the blade body is divided into left and right parts. During operation, the left and right parts of the blade body are in contact. The upper end of the second spiral blade is connected to the upper end of the third spiral blade, and the lower end of the second spiral blade is connected to the lower end of the first spiral blade. Two cavities are arranged on both the left and right sides of the blade body, and are symmetrically arranged up and down. Connecting simultaneously up and down makes the connection more stable.

[0009] Further, pin blocks are symmetrically arranged at both ends of the connecting block. One part of the pin block is arranged inside the blade body, and the other part is arranged outside the blade body. The narrow planes of the small ends of a set of left and right pin blocks are in contact.

[0010] Further, pin holes are arranged inside a set of upper and lower pin blocks. The fixing pins are inserted into the pin holes, and the periphery of the fixing pins is in contact with the pin blocks. The small ends of the pin blocks are in contact to form the pin holes, which facilitates the installation of the fixing pins.

[0011] Further, when a set of left and right pin blocks are in contact on the narrow plane, the other side of the pin block is in contact with the upper inner wall of the cavity, avoiding shaking during operation.

[0012] Further, a threaded hole is arranged at one end of each connecting block, and a bolt is threadedly connected to the threaded hole. The connecting block is installed on the blade body through threaded connection.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: During the approach of the two parts of the blade body, the extended part of the pin block installed on the right blade body moves into the cavity of the left blade body, and the large end of the pin block is in contact with the inner wall of the cavity. The small end of the pin block abuts against the small end of the pin block installed on the other part of the blade body. The small ends of the two parts of the pin blocks abut against each other to form a pin hole. At this time, the fixing pin is installed into the pin hole through the mounting hole opened on the blade body, and the periphery of the fixing pin is closely in contact with the periphery of the pin hole. This firmly connects each part of the pin blocks together. The pin blocks are fixedly installed on the connecting block, and the connecting block is connected to the blade body through the threaded hole and the bolt. The tight connection of the pin blocks makes the left and right parts of the blade body also tightly connected. Since the periphery of the pin block will be in contact with the inner wall of the cavity, and the fixing pin is axially installed, the connection of the blade body will not be affected by the centrifugal force, nor will it be affected by the shaking during operation, ensuring the stability of the connection.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the connecting block is connected with the blade body through the threaded hole bolts, which ensures the firmness of the connection of the pin block, makes the connection more stable and will not be affected by the shaking of the blade during work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the spiral blade of the utility model;

[0016] Figure 2 It is a schematic diagram of the clamping structure of the utility model;

[0017] Figure 3 It is an exploded structural schematic diagram of the spiral blade of the utility model.

[0018] In the figure: 1. Blade body; 2. Cavity; 3. Connecting block; 4. Pin block; 5. Mounting hole; 6. Pin hole; 7. Fixed pin; 8. Threaded hole; 9. Bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-3 , the present utility model provides a technical solution: a split spiral blade that is convenient to replace, including a blade body 1. A cavity 2 is opened at one end of the blade body 1. A connecting block 3 is arranged inside the cavity 2. The other end of the connecting block 3 is in contact with the inner wall of the cavity 2. A pin block 4 is fixedly installed at one end of the connecting block 3. A plurality of mounting holes 5 are arranged on the inner wall of the blade body 1. A fixed pin 7 is arranged inside the mounting hole 5. The blade body 1 is divided into left and right parts. During work, the left and right parts of the blade body 1 are in contact. The upper end of the second spiral blade is connected to the upper end of the third spiral blade, and the lower end of the second spiral blade is connected to the lower end of the first spiral blade. Two cavities 2 are arranged on both the left and right sides of the blade body 1, and are symmetrically arranged up and down. Pin blocks 4 are symmetrically arranged at both ends of the connecting block 3. A part of the pin block 4 is arranged inside the blade body 1, and the other part is arranged outside the blade body 1. The narrow planes of the small ends of a set of left and right pin blocks 4 are in contact. A pin hole 6 is arranged inside a set of upper and lower pin blocks 4. The fixed pin 7 is inserted into the pin hole 6, and the periphery of the fixed pin 7 is in contact with the pin block 4. When a set of left and right pin blocks 4 are in contact on the narrow plane, the other side of the pin block 4 is in contact with the upper inner wall of the cavity 2.

[0021] During specific implementation, the extended part of the pin block 4 installed on the right blade body 1 moves into the cavity 2 of the left blade body 1, and the large end of the pin block 4 abuts against the inner wall of the cavity 2. The small end of the pin block 4 abuts against the small end of the pin block 4 installed on the other part of the blade body 1. The small ends of the two pin blocks 4 abut against each other to form a pin hole 6. At this time, the fixing pin 7 is installed into the pin hole 6 through the installation hole 5 opened on the blade body 1, and the periphery of the fixing pin 7 closely abuts against the periphery of the pin hole 6. This firmly connects each part of the pin block 4 together. The pin block 4 is fixedly installed on the connecting block 3, and the connecting block 3 is connected to the blade body 1 through the bolt 9 in the threaded hole 8. The tight connection of the pin blocks 4 makes the left and right parts of the blade body 1 also closely connected, ensuring the firmness of the connection of the blade body 1, while avoiding the influence of centrifugal force and the adverse consequences caused by unstable connection due to the influence of centrifugal force during operation.

[0022] Refer to Figures 1-3 As shown, a threaded hole 8 is opened at one end of each connecting block 3, and a bolt 9 is threadedly connected to the threaded hole 8.

[0023] Working principle: First, place the two parts of the blade body 1 at the same horizontal height, push the blade body 1 to make the two parts slowly approach until the two parts of the blade body 1 are in contact. At this time, fix the blade body 1 on the spiral shaft. During the process of the two parts of the blade body 1 approaching, the extended part of the pin block 4 installed on the right blade body 1 moves into the cavity 2 of the left blade body 1, and the large end of the pin block 4 abuts against the inner wall of the cavity 2. The small end of the pin block 4 abuts against the small end of the pin block 4 installed on the other part of the blade body 1. The small ends of the two pin blocks 4 abut against each other to form a pin hole 6. At this time, the fixing pin 7 is installed into the pin hole 6 through the installation hole 5 opened on the blade body 1, and the periphery of the fixing pin 7 closely abuts against the periphery of the pin hole 6. This firmly connects each part of the pin block 4 together. The pin block 4 is fixedly installed on the connecting block 3, and the connecting block 3 is connected to the blade body 1 through the bolt 9 in the threaded hole 8. The tight connection of the pin blocks 4 makes the left and right parts of the blade body 1 also closely connected. The blade bodies 1 are connected in a spiral and alternating manner. The upper end of the second spiral blade is connected to the upper end of the third spiral blade, and the lower end of the second spiral blade is connected to the lower end of the first spiral blade. Since the periphery of the pin block 4 will contact the inner wall of the cavity 2, and at the same time the fixing pin 7 is installed axially, the connection of the blade body 1 will not be affected by centrifugal force or the shaking during operation, ensuring the stability of the connection.

Claims

1. A split spiral blade that is easy to replace, comprising a blade body (1), characterized in that: A cavity (2) is provided at one end of the blade body (1), a connecting block (3) is arranged inside the cavity (2), the other end of the connecting block (3) is in contact with the inner wall of the cavity (2), a pin block (4) is fixedly mounted on one end of the connecting block (3), a plurality of mounting holes (5) are provided on the inner wall of the blade body (1), and a fixing pin (7) is arranged inside the mounting hole (5).

2. The easily replaceable split spiral blade according to claim 1, characterized in that: The blade body (1) is divided into two left and right parts, the left and right parts of the blade body (1) are in contact with each other, the upper end of the second spiral blade is connected to the upper end of the third spiral blade, and the lower end of the second spiral blade is connected to the lower end of the first spiral blade. Two cavities (2) are arranged on the left and right sides of the blade body (1), and are symmetrically arranged up and down.

3. The easily replaceable split spiral blade according to claim 1, characterized in that: Pin blocks (4) are symmetrically arranged at both ends of the connection block (3), one part of the pin block (4) is arranged inside the blade body (1), and the other part is arranged outside the blade body (1), and the narrow planes of the small ends of the left and right groups of the pin blocks (4) are in contact.

4. The easily replaceable split spiral blade according to claim 1, characterized in that: A pin hole (6) is arranged inside the upper and lower pin blocks (4), and the fixing pin (7) is inserted into the pin hole (6). The fixing pin (7) is in contact with the pin block (4) around its periphery.

5. The easily replaceable split spiral blade according to claim 1, characterized in that: When the left and right sets of pin blocks (4) are in contact at the narrow plane, the other surface of the pin block (4) is in contact with the upper inner wall of the cavity (2).

6. The easily replaceable split spiral blade according to claim 1, characterized in that: A threaded hole (8) is formed at one end of each connection block (3), and a bolt (9) is threadedly connected to the threaded hole (8).

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