Peristaltic pump structure for prolonging service life of hose

Abstract

The utility model provides a peristaltic pump structure for prolonging the service life of a hose, which relates to the technical field of peristaltic pumps and comprises a base, a motor is mounted at the bottom of the base, a wheel carrier is mounted in the base, the hose is arranged on the outer side of the wheel carrier, joints are mounted at two ends of the hose, and the joints are connected with the motor. And an upper cover is movably mounted at the top of the base. The elastic pressing block is arranged on one side of the working arc surface of the hose, so that an overpressure gap of the working arc surfaces on the two sides has a certain elastic moving space, pressure generated in the working process of the wheel set and the working arc surfaces on the two sides can be effectively reduced, surface abrasion of the hose is effectively reduced, and the service life is prolonged; the working arc surface of the elastic pressing block is designed in an inward concave mode, namely the edges of the two sides of the gap wall between the elastic pressing block and the wheel set are large, the hose can be automatically centered when the wheel set operates, the situation that the hose is not centered after being replaced and is abraded can be avoided, and therefore the service life of the hose can be effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of peristaltic pump technology, and more specifically, to a peristaltic pump structure for improving hose life. Background Technology

[0002] Peristaltic pumps are a new type of fluid transfer pump following rotary pumps, centrifugal pumps, and diaphragm pumps. A peristaltic pump works like squeezing a fluid-filled tube with your finger; as you slide your finger forward, a negative pressure is created inside the tube, causing the fluid to move forward. Compared to ordinary fluid transfer pumps, peristaltic pumps offer advantages such as fluid isolation within the pump tubing, quick tubing replacement, and low maintenance costs. They are being widely adopted and applied in various industries, including medical, pharmaceutical, food, beverage, chemical, and metallurgical industries, playing a vital role in liquid transfer and process control due to their unique operating mechanism and superior performance.

[0003] Existing small peristaltic pumps all use a base-fixed working arc surface, and the arc surface of the pressure block is a vertical surface. It is difficult to center the hose in the upper and lower positions of the wheel assembly, or the wheel assembly is not perpendicular due to the accumulation of assembly tolerances. This will cause the hose to shift up and down during operation, causing the hose to contact the base or top cover, resulting in abnormal wear of the hose and a short service life, which limits the overall service life of the peristaltic pump. Therefore, we have made improvements to this problem and proposed a peristaltic pump structure to improve hose life. Utility Model Content

[0004] The main purpose of this utility model is to provide a peristaltic pump structure for improving hose life. It can effectively solve the problems of small peristaltic pumps where the working arc surface is fixed by the base, the arc surface of the pressure block is vertical, the hose is difficult to center in the upper and lower positions of the wheel assembly, or the wheel assembly is not vertical due to the accumulation of assembly tolerances. This causes the hose to shift up and down during operation, resulting in the hose contacting the base or top cover, causing abnormal wear of the hose, a low hose life, and limiting the overall life of the peristaltic pump.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A peristaltic pump structure for improving hose life includes a base, a motor mounted at the bottom of the base, a wheel frame mounted inside the base, a hose disposed on the outside of the wheel frame, connectors mounted at both ends of the hose, and a top cover movably mounted on the top of the base.

[0007] Preferably, the motor is fixed to the bottom of the base by a number of screws, and the output end of the motor is engaged with the bottom of the wheel frame.

[0008] Preferably, a number of small shafts are evenly distributed inside the wheel frame, and a roller is fixedly installed on the shaft of each small shaft, with the outer side of the roller contacting the outer surface of the hose.

[0009] Preferably, connecting blocks are installed at both ends of the hose and at the joint, and each connecting block has a U-shaped groove on its outer surface.

[0010] Preferably, two U-shaped protrusions are symmetrically arranged on one side of the interior of the base, and the U-shaped protrusions can cooperate with the U-shaped grooves.

[0011] Preferably, an elastic pressure block is installed on one side of the inside of the base, the inner wall of the elastic pressure block is in contact with the outer surface of the hose, and mounting posts are provided at both ends of the elastic pressure block. Mounting grooves that cooperate with the mounting posts are provided on both sides of the inside of the base.

[0012] Preferably, a bearing is installed inside the top cover, and a sleeve is installed on the upper surface of the wheel frame, and the bearing can cooperate with the sleeve.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] An elastic pressure block is provided on one side of the working arc surface of the hose, which allows for a certain amount of elastic movement space in the overpressure gap between the two working arc surfaces. This effectively reduces the pressure generated between the wheel assembly and the two working arc surfaces during operation, thereby reducing surface wear of the hose and improving its service life. The working arc surface of the elastic pressure block has a concave design, meaning that the gap between the elastic pressure block and the wheel assembly is large on both sides. When the wheel assembly is running, the hose will automatically center itself, preventing wear caused by misalignment after hose replacement, thus effectively improving the service life of the hose. Attached Figure Description

[0015] Figure 1 This is a front view of the present invention;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is an internal cross-sectional view of the present invention.

[0018] In the diagram: 1. Motor; 2. Screw; 3. Base; 301. U-shaped protrusion; 302. Mounting groove; 4. Hose; 5. Connector; 501. Connecting block; 502. U-shaped groove; 6. Roller; 7. Small shaft; 8. Wheel frame; 801. Sleeve; 9. Elastic pressure block; 901. Mounting post; 10. Bearing; 11. Top cover. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] like Figure 1 , Figure 2 , Figure 3 As shown, a peristaltic pump structure for improving hose life includes a base 3, a motor 1 installed at the bottom of the base 3, a wheel frame 8 installed inside the base 3, a hose 4 provided on the outside of the wheel frame 8, connectors 5 installed at both ends of the hose 4, and a top cover 11 movably installed on the top of the base 3. The motor 1 is locked and fixed to the bottom of the base 3 by several screws 2, and the output end of the motor 1 is engaged with the bottom of the wheel frame 8.

[0021] like Figure 2 , Figure 3 As shown, several small shafts 7 are evenly distributed inside the wheel frame 8. A roller 6 is fixedly installed on the shaft of each small shaft 7. The outer side of the roller 6 contacts the outer surface of the hose 4. Connecting blocks 501 are installed at both ends of the hose 4 and the joint 5. A U-shaped groove 502 is provided on the outer surface of each connecting block 501. Two U-shaped protrusions 301 are symmetrically arranged on one side of the inside of the base 3. The U-shaped protrusions 301 can cooperate with the U-shaped grooves 502. An elastic pressure block 9 is installed on one side of the inside of the base 3. The inner wall of the elastic pressure block 9 is in contact with the outer surface of the hose 4. Mounting posts 901 are provided at both ends of the elastic pressure block 9. Mounting grooves 302 that cooperate with the mounting posts 901 are provided on both sides of the inside of the base 3. A bearing 10 is installed inside the top cover 11. A sleeve 801 is installed on the upper surface of the wheel frame 8. The bearing 10 can cooperate with the sleeve 801.

[0022] The U-shaped protrusion 301 and the U-shaped groove 502 cooperate to limit the position of the connecting block 501 inside the base 3, thereby limiting the positions of both ends of the hose 4 and the connector 5, preventing them from shifting during use and making them more convenient to use. The elastic pressure block 9 can be movably installed inside the base 3 through the cooperation between the mounting post 901 and the mounting groove 302, making it easy to disassemble and making the disassembly of the hose 4 more convenient.

[0023] The working principle of this peristaltic pump structure used to improve hose life:

[0024] In use, the motor 1 drives the wheel frame 8 to rotate, causing the roller 6 to rotate as well. The overall rotation of the roller 6 compresses the surface of the hose 4, creating negative pressure inside the hose 4 profile, thus enabling the transport of liquid. An elastic pressure block 9 is provided on one side of the working arc surface of the hose 4, which allows for a certain amount of elastic movement space in the pressure gap between the two working arc surfaces. This effectively reduces the pressure generated between the wheel assembly and the two working arc surfaces during operation, effectively reducing surface wear of the hose 4 and improving its service life. The working arc surface of the elastic pressure block 9 has a concave design, meaning that the gap wall between the elastic pressure block 9 and the wheel assembly is large on both sides. When the wheel assembly is running, the hose 4 will automatically center itself, preventing wear caused by the hose 4 not being centered after replacement, thus effectively improving the service life of the hose 4.

[0025] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A peristaltic pump structure for improving hose life, comprising a base (3), characterized in that: A motor (1) is installed at the bottom of the base (3). A wheel frame (8) is installed inside the base (3). A flexible hose (4) is provided on the outside of the wheel frame (8). A connector (5) is installed at both ends of the flexible hose (4). A top cover (11) is also movably installed on the top of the base (3). An elastic pressure block (9) is installed on one side inside the base (3). The inner wall of the elastic pressure block (9) is in contact with the outer surface of the flexible hose (4). A mounting post (901) is provided at both ends of the elastic pressure block (9). Mounting grooves (302) that cooperate with the mounting posts (901) are provided on both sides inside the base (3).

2. The peristaltic pump structure for improving hose life according to claim 1, characterized in that: The motor (1) is locked and fixed to the bottom of the base (3) by several screws (2), and the output end of the motor (1) is engaged with the bottom of the wheel frame (8).

3. The peristaltic pump structure for improving hose life according to claim 1, characterized in that: The wheel frame (8) has several small shafts (7) evenly distributed inside. Each small shaft (7) has a roller (6) fixedly installed on its shaft body. The outer side of the roller (6) is in contact with the outer surface of the hose (4).

4. The peristaltic pump structure for improving hose life according to claim 1, characterized in that: Connecting blocks (501) are installed at both ends of the hose (4) and the joint (5), and each connecting block (501) has a U-shaped groove (502) on its outer surface.

5. A peristaltic pump structure for improving hose life according to claim 1, characterized in that: Two U-shaped protrusions (301) are symmetrically arranged on one side of the interior of the base (3), and the U-shaped protrusions (301) can cooperate with the U-shaped grooves (502).

6. A peristaltic pump structure for improving hose life according to claim 1, characterized in that: The bearing (10) is installed inside the cover (11), and the sleeve (801) is installed on the upper surface of the wheel frame (8). The bearing (10) can cooperate with the sleeve (801).

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