A drawstring drive for use in a drawstring doctor centrifuge

Abstract

This utility model discloses a bag-pulling drive device for a bag-pulling scraper centrifuge, relating to the technical field of bag-pulling scraper centrifuges. It includes a cylinder body with two sets of side-fixing slots fixedly connected to its side. Each side-fixing slot has an upper slot. In this utility model, the user simply aligns the bag-pulling frame with the slot on the side of the cylinder body and pushes it in. The arc-shaped design of the locking top block compresses the spring, which slides into the locking slot. The locking top block expands and locks the locking slot, completing the installation. For disassembly, the user can easily pull out the locking top block by moving the manual lever to retract it into the through hole. Similarly, fixing the bag-pulling claw to the bag-pulling frame is also extremely simple. The user aligns the perforated insert with the lower slot and pushes it in, pushing the inclined slider to raise the locking top column. After the insert is fully inserted, the spring returns to its original state, and the locking top column slides into the through hole to complete the fixation. To release, the user simply pulls the locking top column. The entire process is simple and convenient, improving operational efficiency and equipment flexibility.

Description

Technical Field

[0001] This utility model relates to the field of bag-pulling scraper centrifuge technology, and in particular to a bag-pulling drive device for use in a bag-pulling scraper centrifuge. Background Technology

[0002] The bag-pulling drive device used in a scraper centrifuge includes a connecting rod, a connecting rod drive seat, and a bag-pulling bracket. It drives the filter bag to reciprocate up and down via pneumatic or mechanical means to remove residual filter cake after scraper discharge, achieving complete unloading. This device has a compact structure, reliable operation, and improves the centrifuge's filtration efficiency and unloading effect.

[0003] Research revealed that while existing technologies enable quick disassembly between the bag-pulling frame and the cylinder, most still employ a one-piece molding design between the bag-pulling claw and the frame. This design makes it difficult to easily replace or repair the bag-pulling claw. If the bag-pulling claw is damaged or requires an upgrade, the user may need to replace the entire bag-pulling frame, significantly increasing maintenance costs and time. To address this issue, a bag-pulling drive device for use in a bag-pulling scraper centrifuge was designed. Utility Model Content

[0004] The purpose of this utility model is to provide a bag-pulling drive device for a bag-pulling scraper centrifuge, which not only allows for quick fixing or disassembly of the bag-pulling frame, but also enables quick fixing and disassembly of the bag-pulling claws and the bag-pulling frame, thus greatly reducing the cost of using the device and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bag-pulling drive device for a bag-pulling scraper centrifuge, comprising: a cylinder body, two sets of side fixing slots fixedly connected to the side of the cylinder body, an upper slot provided on the side of the side fixing slot, locking slots extending through to the outside of the side fixing slot symmetrically provided on the two inner side walls of the upper slot, a bag-pulling frame provided on the side of the side fixing slot, a top block through hole provided on the side of the bag-pulling frame, a paddle sliding hole provided above the bag-pulling frame, two sets of locking top blocks provided inside the top block through hole, a manual paddle fixedly connected above the locking top blocks, and a first support spring fixedly connected to the side of the locking top blocks.

[0006] As a further embodiment of this utility model: two sets of lower slots are provided on the outer side of the bag puller, and a top column sliding hole is provided on the inner side of the lower slot, extending through to the outer side of the bag puller. A second support spring is fixedly connected to the outer side of the bag puller near the top column sliding hole. A locking top column is slidably connected to the inner side of the top column sliding hole. A third support spring is fixedly connected to the inner side of the lower slot. A slanted slider is fixedly connected to the other end of the third support spring. A bag puller claw is provided on the outer side of the bag puller, and an opening insertion block is fixedly connected to the side of the bag puller claw.

[0007] As a further improvement of this utility model, the top block through hole is connected to the sliding hole of the lever.

[0008] As a further improvement of this utility model: a sliding groove is provided on the bottom wall of the top block through hole, and two sets of locking top blocks are provided, with a slider that matches the sliding groove fixedly connected below. The two sets of locking top blocks are slidably connected to the top block through hole through the slider and the sliding groove respectively.

[0009] As a further improvement of this utility model, the first support spring is fixedly connected to the sides of the two sets of locking top blocks respectively.

[0010] As a further improvement of this utility model: when the first support spring is not subjected to external force and naturally extends, the two sets of locking top blocks partially protrude from the top block through hole; when the first support spring is fully compressed, the two sets of locking top blocks can be completely retracted into the top block through hole.

[0011] As a further improvement of this utility model: the two ends of the second support spring are respectively fixedly connected to the outer side of the bag frame and the locking top column.

[0012] As a further improvement of this utility model: the inner side of the perforated insert has a through hole adapted to the locking top post, and the perforated insert is adapted to the lower slot.

[0013] As a further embodiment of this utility model: when the opening block is not inserted into the lower slot and the third support spring is not subjected to external force and naturally extends, the end of the locking top post located inside the lower slot is in close contact with the lowest point of the groove inside the inclined slide block.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The installation and removal of the bag holder and the cylinder body in this utility model is extremely simple. The user only needs to align the bag holder with the upper slot on the side of the cylinder body and gently push it in. The arc design of the locking top block will compress the first support spring, allowing the locking top block to slide smoothly into the locking groove. When the locking top block is fully inside the locking groove, the spring locking top block expands outward, thereby firmly locking the locking groove and completing the installation. When disassembling, the user only needs to move the manual lever to drive the locking top block to fully retract into the top block through hole, thereby easily pulling out the bag holder. The whole process does not require the use of any complicated tools, which greatly improves the operating efficiency.

[0016] 2. The process of fixing and releasing the bag puller claw and the bag puller frame in this utility model is also simple and quick. The user only needs to align the perforated insert block on the side of the bag puller claw with the lower slot of the bag puller frame and push it in gently. This will squeeze and push the inclined slide block, causing the locking pin to rise along the inner inclined surface of the inclined slide block. When the perforated insert block is fully inserted into the lower slot, the second support spring returns to its original state, and the locking pin will slide into the through hole inside the perforated insert block, thus completing the fixing. When the fixing is released, the user only needs to pull the locking pin to separate it from the through hole inside the perforated insert block, and the bag puller claw can be easily pulled out. This design not only simplifies the operation process, but also improves the flexibility and maintainability of the equipment. 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 side fixing groove block in this utility model;

[0019] Figure 3 This is a schematic diagram of the lower slot in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure at point A in this utility model.

[0021] In the diagram: 1. Cylinder body; 2. Side fixing slot block; 3. Upper slot; 4. Locking slot; 5. Bag puller; 6. Top block through hole; 7. Paddle slide hole; 8. Locking top block; 9. Manual paddle; 10. First support spring; 11. Lower slot; 12. Top column slide hole; 13. Second support spring; 14. Locking top column; 15. Third support spring; 16. Inclined slot slider; 17. Bag puller claw; 18. Opening insert block. 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] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0024] Reference Figures 1 to 4In this embodiment of the present invention, a bag-pulling drive device for a bag-pulling scraper centrifuge includes: a cylinder body 1, two sets of side fixing slots 2 are fixedly connected to the side of the cylinder body 1, an upper slot 3 is opened on the side of the side fixing slot 2, and locking slots 4 extending through to the outside of the side fixing slot 2 are symmetrically opened on the two inner side walls of the upper slot 3. A bag-pulling frame 5 is provided on the side of the side fixing slot 2, a top block through hole 6 is opened on the side of the bag-pulling frame 5, a paddle sliding hole 7 is opened above the bag-pulling frame 5, two sets of locking top blocks 8 are provided inside the top block through hole 6, a manual paddle 9 is fixedly connected above the locking top block 8, and a first support spring 10 is fixedly connected to the side of the locking top block 8. When it is necessary to install the bag-pulling frame 5, it is only necessary to align the bag-pulling frame 5 with the corresponding position in the upper slot 3 and insert it. Due to the arc design of the locking top block 8, as the bag-pulling frame 5 is inserted, the first support spring 10 will be compressed until the locking top block 8 slides completely into the locking slot 4. At this time, the first support spring 10 returns to its original state, pushing the locking top block 8 to expand outward and lock the locking groove 4, thereby completing the installation of the bag holder 5 and the cylinder 1. When it is necessary to remove the installation for replacement or maintenance, simply move the two sets of manual paddles 9, and push the locking top block 8 through the paddle sliding hole 7, so that the two sets of locking top blocks 8 are fully retracted into the top block through hole 6, and the bag holder 5 can be easily pulled out;

[0025] Two sets of lower slots 11 are provided on the outer side of the bag holder 5. A top column sliding hole 12 is provided on the inner side of the lower slot 11, extending to the outer side of the bag holder 5. A second support spring 13 is fixedly connected to the outer side of the bag holder 5 near the top column sliding hole 12. A locking top column 14 is slidably connected to the inner side of the top column sliding hole 12. A third support spring 15 is fixedly connected to the inner side of the lower slot 11. The other end of the third support spring 15 is fixedly connected to a slanted slider 16. A bag claw 17 is provided on the outer side of the bag holder 5. An opening insertion block 18 is fixedly connected to the side of the bag claw 17. When the bag claw 17 needs to be installed on the bag holder 5, the opening insertion block 18 only needs to be aligned with the lower slot 11 and inserted. At this time, the opening insertion block 18 will squeeze the slanted slider 16, compressing the third support spring 15. At the same time, the locking top column 14 slides in the top column sliding hole 12 and rises along the inner slope of the slanted slider 16, and the second support spring 13 is stretched accordingly. When the perforated insert 18 is fully inserted into the lower slot 11, the locking pin 14 slides into the through hole inside the perforated insert 18, the second support spring 13 returns to its original position, and pushes the locking pin 14 to press tightly against the perforated insert 18, thereby completing the fixation between the bag holder 5 and the bag claw 17. When it is necessary to release the fixation, simply pull the locking pin 14 to overcome the elastic force of the second support spring 13, so that the locking pin 14 separates from the through hole inside the perforated insert 18, and the bag claw 17 can be easily pulled out.

[0026] The top block through hole 6 is connected to the paddle slide hole 7. This design allows the manual paddle 9 to pass smoothly through the paddle slide hole 7 and push the locking top block 8 to slide in the top block through hole 6, thereby realizing the installation and removal of the bag rack 5. A slide groove is provided on the bottom wall of the top block through hole 6. There are two sets of locking top blocks 8, and a slider that matches the slide groove is fixedly connected below. The two sets of locking top blocks 8 are slidably connected to the top block through hole 6 through the slider and the slide groove respectively. The cooperation design of the slider and the slide groove allows the locking top block 8 to slide stably in the top block through hole 6, while ensuring that the locking top block 8 can move along the predetermined path when subjected to external force.

[0027] The first support spring 10 is fixedly connected to the sides of the two sets of locking top blocks 8 respectively. The first support spring 10 provides elastic support for the locking top blocks 8, so that the locking top blocks 8 can maintain an outward expansion state when no external force is applied, thereby ensuring a stable connection between the bag pull frame 5 and the cylinder body 1. When the first support spring 10 is not subjected to external force and naturally extends, the two sets of locking top blocks 8 partially protrude from the top block through hole 6. When the first support spring 10 is fully compressed, the two sets of locking top blocks 8 can be completely retracted into the top block through hole 6. This design allows the locking top blocks 8 to slide smoothly into the locking groove 4 during the installation of the bag pull frame 5, and automatically pop out and lock the locking groove 4 after installation. At the same time, when it is necessary to disassemble the bag pull frame 5, the first support spring 10 can be compressed by the manual lever 9 to make the locking top blocks 8 completely retract into the top block through hole 6, thereby releasing the locking state.

[0028] The two ends of the second support spring 13 are fixedly connected to the outer side of the bag puller 5 and the locking top post 14, respectively. The second support spring 13 provides elastic support for the locking top post 14, so that the locking top post 14 can maintain an inward extended state when it is not subjected to external force, thereby ensuring a stable connection between the bag puller claw 17 and the bag puller 5. The inner side of the opening insert 18 is provided with a through hole that matches the locking top post 14. The opening insert 18 matches the lower slot 11. When the opening insert 18 is not inserted into the lower slot 11 and the third support spring 15 is not subjected to external force and naturally extends, the end of the locking top post 14 located inside the lower slot 11 is close to the lowest point of the inner groove of the inclined slide block 16. This design allows the locking top post 14 to rise smoothly along the inner inclined surface of the inclined slide block 16 during the installation of the bag puller claw 17, and automatically slide into the through hole inside the opening insert 18 after installation.

[0029] The working principle of this utility model is as follows: When it is necessary to install the bag holder 5, simply align the bag holder 5 with the corresponding position in the upper slot 3 and insert it. Due to the arc design of the locking top block 8, the first support spring 10 will be compressed until the locking top block 8 is completely slid into the locking groove 4. At this time, the first support spring 10 returns to its original state, and the bag holder 5 completes the installation with the cylinder 1.

[0030] When it is necessary to remove the installation for replacement or repair, simply move the two sets of manual levers 9 to make the two sets of locking top blocks 8 fully retract into the top block through hole 6, and the bag holder 5 can be easily pulled out.

[0031] When the bag puller 17 needs to be installed, simply align the perforated insert 18 with the lower slot 11 and insert it. At this time, the perforated insert 18 will press the inclined slide block 16, and the third support spring 15 will be compressed accordingly. The locking top post 14 located on the inner side of the lower slot 11 slides along the inclined surface of the inner side of the inclined slide block 16, and the second support spring 13 will be stretched until the locking top post 14 slides into the through hole opened on the inner side of the perforated insert 18. The second support spring 13 returns to its original state, and the fixing between the bag puller 5 and the bag puller 17 can be completed.

[0032] When it is necessary to release the fixation between the bag puller 17 and the bag puller 5, simply pull the locking top post 14, the second support spring 13 will stretch, and the locking top post 14 will separate from the inner through hole of the opening block 18, so that the bag puller 17 can be easily pulled out.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A drawbag drive apparatus for use in a drawbag doctor centrifuge, characterized by, include: A cylinder body (1) has two sets of side fixing slots (2) fixedly connected to its side. The side fixing slots (2) have upper slots (3) on their sides. The upper slots (3) have two symmetrical locking slots (4) that extend through to the outside of the side fixing slots (2) on their inner walls. A bag puller (5) is provided on the side of the side fixing slots (2). A top block through hole (6) is provided on the side of the bag puller (5). A paddle sliding hole (7) is provided above the bag puller (5). Two sets of locking top blocks (8) are provided inside the top block through hole (6). A manual paddle (9) is fixedly connected above the locking top block (8). A first support spring (10) is fixedly connected to the side of the locking top block (8).

2. A drawbag drive apparatus for use in a drawbag doctor centrifuge as defined in claim 1, wherein Two sets of lower slots (11) are provided on the outer side of the bag holder (5). A top column sliding hole (12) extending through to the outer side of the bag holder (5) is provided on the inner side of the lower slot (11). A second support spring (13) is fixedly connected to the outer side of the bag holder (5) near the top column sliding hole (12). A locking top column (14) is slidably connected to the inner side of the top column sliding hole (12). A third support spring (15) is fixedly connected to the inner side of the lower slot (11). A slanted slider (16) is fixedly connected to the other end of the third support spring (15). A bag claw (17) is provided on the outer side of the bag holder (5). An opening insert (18) is fixedly connected to the side of the bag claw (17).

3. A drawbag drive apparatus for use in a drawbag doctor centrifuge as defined in claim 1, wherein, The top block through hole (6) is connected to the sliding hole (7) of the lever.

4. A drawbag drive apparatus for use in a drawbag doctor centrifuge as defined in claim 1, wherein, The bottom wall of the top block through hole (6) is provided with a sliding groove. There are two sets of locking top blocks (8), and a slider that matches the sliding groove is fixedly connected below them. The two sets of locking top blocks (8) are slidably connected to the top block through hole (6) through the slider and the sliding groove respectively.

5. A drawbag drive apparatus for use in a drawbag doctor centrifuge as defined in claim 1, wherein, The first support spring (10) is fixedly connected to the sides of the two sets of locking top blocks (8).

6. A drawbag drive apparatus for use in a drawbag doctor centrifuge as defined in claim 1, wherein, When the first support spring (10) is not subjected to external force and naturally extends, the two sets of locking top blocks (8) partially protrude from the top block through hole (6). When the first support spring (10) is fully compressed, the two sets of locking top blocks (8) can be completely retracted into the top block through hole (6).

7. A bag-pulling drive device for a bag-pulling scraper centrifuge according to claim 2, characterized in that, The two ends of the second support spring (13) are fixedly connected to the outside of the bag frame (5) and the locking top post (14), respectively.

8. A drawbag drive apparatus for use in a drawbag doctor centrifuge as defined in claim 2, wherein, The inner side of the opening insert (18) is provided with a through hole that is compatible with the locking top post (14), and the opening insert (18) is compatible with the lower slot (11).

9. A drawbag drive apparatus for use in a drawbag doctor centrifuge as defined in claim 2, wherein, When the opening insert (18) is not inserted into the lower slot (11) and the third support spring (15) is not subjected to external force and naturally extends, the locking top post (14) is located at the lowest point of the inner groove of the inclined slide block (16) with one end close to the inner side of the lower slot (11).

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