Anti-blocking impeller for chemical process pump

Abstract

The utility model discloses an anti-blocking impeller for a chemical process pump, and relates to the technical field of chemical pump impellers. The crusher comprises a main shaft with blades, the main shaft and a coaxial extension shaft located in front of the blades, the extension shaft is provided with a crushing mechanism, the crushing mechanism comprises at least one group of paddles, and the part from the outer end of each paddle to the root part connected with the extension shaft is in a shape of which the cross section is gradually increased. According to the utility model, the extension shaft is arranged, the two groups of paddles are arranged on the periphery of the extension shaft, and the rear side surface of each paddle adopts the design of the inclined surface, so that material blocks can be crushed through the tip parts of the paddles in the operation process, the blockage of the impeller due to accumulation of the material blocks is avoided, and the connection strength between the roots of the paddles and the extension shaft can be ensured. According to the spiral guide plate, material blocks can be diffused to the periphery, so that the material blocks are in contact with the peripheral tips of the paddles, and the crushing effect on the material blocks is improved.

Description

Technical Field

[0001] The utility model discloses an anti-clogging impeller for a chemical process pump, and relates to the technical field of chemical pump impellers. Background Art

[0002] Chemical process pumps are widely used pressurized conveying equipment in the chemical industry, capable of transporting a variety of liquid materials. When using traditional chemical process pumps to transport liquids containing large lumps, if the lumps are numerous and large, they can accumulate at the pump's impeller, leading to blockage and requiring disassembly and repair, a time-consuming and labor-intensive process. If not promptly cleared, the clogged lumps can reduce pump efficiency and shorten its service life. Summary of the Invention

[0003] The purpose of the utility model is to design an impeller for a chemical process pump which can prevent clogging.

[0004] The utility model comprises a main shaft with blades, the main shaft and a coaxial extension shaft located in front of the blades, the extension shaft is provided with a crushing mechanism, the crushing mechanism comprises at least one group of blades, and the cross-section of each blade is gradually enlarged from the outer end to the root where the blade is connected to the extension shaft.

[0005] Furthermore, a spiral guide plate is provided on the extension shaft on the front side of the crushing mechanism.

[0006] Furthermore, the front end of the extension shaft has a taper.

[0007] Furthermore, two groups of blades are arranged along the length direction of the extended shaft, each group of blades corresponds to the same position of the axis of the extended shaft, and the blades in the same group are arranged along the circumference of the extended shaft.

[0008] Furthermore, the rear surface of each blade is an inclined surface; at the bottom end of the inclined surface, the cross section of the blade is circular.

[0009] Furthermore, the front end of the main shaft protrudes from the blade and has an external thread, the rear end of the extended shaft is provided with a countersunk hole with an internal thread, and the main shaft and the extended shaft are connected to each other via threads in the opposite direction of rotation.

[0010] The utility model is equipped with an extension shaft, and two sets of blades are arranged on the outer periphery of the extension shaft. The rear surface of each blade adopts a bevel design. During operation, the blade tips can break up the material blocks, preventing the blocks from clogging the impeller. The blade roots can also ensure the connection strength with the extension shaft. The spiral guide plate in the utility model can disperse the material blocks toward the outer periphery, so that the material blocks come into contact with the outer peripheral tips of the blades, thereby improving the breaking effect of the material blocks.

[0011] In the utility model, the front section of the main shaft is provided with an external thread in the opposite direction of the main shaft rotation; the rear end of the extended shaft is provided with a corresponding threaded countersunk hole connected to the main shaft, and the design of the thread rotation direction at the connection between the main shaft and the extended shaft is opposite to the main shaft rotation direction can prevent the extended shaft from falling off during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of an embodiment of the utility model;

[0013] Figure 2 for Figure 1 Right view;

[0014] Figure 3 for Figure 2 Cross-sectional view in the AA direction;

[0015] Figure 4 for Figure 2 Cross-sectional view in the middle BB direction;

[0016] Figure 5 for Figure 2 Schematic diagram of the structure of the main shaft;

[0017] Figure 6 for Figure 1 Top view of the middle extended shaft;

[0018] Among them: 1. Main shaft, 2. Blade, 3. Crushing mechanism, 4. Extension shaft, 5. First blade, 6. Second blade, 7. Spiral guide plate. DETAILED DESCRIPTION

[0019] by Figure 1 The up, down, left, right, front and back directions of this embodiment are defined.

[0020] As shown in the figure, this embodiment includes a main shaft 1, with a group of blades 2 disposed on the outer periphery of the main shaft 1. The blades 2 are fixedly connected to the outer surface of the main shaft 1 on the side closest to the main shaft 1, forming an impeller structure. The main shaft 1 is driven by a motor, thereby driving the blades 2 to rotate. The front end of the main shaft 1 protrudes from the blades 2, and the outer surface of the protruding portion is provided with an external thread. An extension shaft 4 is provided in front of the main shaft 1. The extension shaft 4 is coaxial with the main shaft 1 and has a countersunk hole at its rear end. The countersunk hole is provided with an internal thread corresponding to the external thread at the front end of the main shaft 1. When in use, the extension shaft 4 is screwed onto the front end of the main shaft 1. In this embodiment, the front end of the extension shaft 4 is conical, and the conical front end is smoothly transitioned through an arc surface. During use, it can play a role in guiding the flow and reducing the impact of the liquid on the extension shaft 4.

[0021] The outer surface of the extension shaft 4 is provided with a crushing mechanism 3, which includes a first paddle 5 and a second paddle 6. The first and second paddles 5, 6 are arranged along the length of the extension shaft 4. In this embodiment, two first paddles 5 are provided, symmetrically arranged around the circumference of the extension shaft 4, at the upper and lower ends of the corresponding extension shaft 4 axis. Two second paddles 6 are provided, symmetrically arranged around the circumference of the extension shaft 4, at the left and right ends of the corresponding extension shaft 4 axis. The two sets of paddles are staggered, with the second paddles 6 positioned behind the first paddles 5, enabling multi-stage crushing of the material. The rear surface of each paddle is inclined, resulting in a gradually increasing cross-section from the outer end of each blade to the root where it connects to the extension shaft 4. This inclined surface gives the outer end of the blade a pointed structure, which facilitates crushing of the material. The bottom end of the inclined surface, near the extension shaft 4, has a circular cross-section to ensure the connection strength between the paddle and the extension shaft 4. This cross-section is a plane perpendicular to the length of the blade. A spiral guide plate 7 is provided on the front side of the crushing mechanism. The spiral guide plate 7 surrounds the outer periphery of the extension shaft 4, and the spiral surface is tilted backward. One end close to the extension shaft 4 is fixedly connected to the outer surface of the extension shaft 4. During use, it can drain the liquid and the material blocks, and diffuse the liquid and the material blocks to the outer periphery of the spiral guide plate 7, so that the material blocks contact the tips of the outer periphery of each blade, thereby improving the crushing effect of the material blocks.

[0022] In this embodiment, the thread rotation direction at the connection between the main shaft 1 and the extension shaft 4 is opposite to the rotation direction of the main shaft 1. During use, the materials are crushed by the blades, which can tighten the connection between the main shaft 1 and the extension shaft 3 and prevent the extension shaft 4 from falling off during use.

[0023] When this embodiment is in use, the motor is started to control the rotation of the main shaft 1, and the main shaft 1 drives the extension shaft 4 and the parts installed on the periphery of the extension shaft 4 to rotate; when the liquid material and the material block pass through, they are first guided to the spiral guide plate 7 through the conical front end of the extension shaft 4. Through the action of the spiral guide plate 7, the liquid material and the material block diffuse toward the periphery. When passing through the breaking mechanism 3, the tips of the outer periphery of each blade contact the material block and break the material block. The broken material block passes through the blades with the liquid material, completing the processing of the material block.

Claims

1. An anti-clogging impeller for a chemical process pump, including a main shaft with blades, characterized by: The main shaft is coaxial with the extension shaft located in front of the blades, and a crushing mechanism is provided on the extension shaft. The crushing mechanism includes at least one group of blades, and the cross-section of each blade gradually increases from the outer end to the root where it is connected to the extension shaft.

2. The anti-clogging impeller for a chemical process pump according to claim 1 is characterized in that: A spiral guide plate is provided on the extension shaft at the front side of the crushing mechanism.

3. The anti-clogging impeller for a chemical process pump according to claim 1 or 2, characterized in that: The front end of the extension shaft has a taper.

4. The anti-clogging impeller for a chemical process pump according to claim 1 or 2, characterized in that: Two groups of blades are arranged along the length direction of the extended shaft, each group of blades corresponds to the same position of the axis of the extended shaft, and the blades in the same group are arranged along the circumference of the extended shaft.

5. The anti-clogging impeller for a chemical process pump according to claim 1 or 2 is characterized in that: The rear surface of each blade is an inclined surface; at the bottom end of the inclined surface, the cross section of the blade is a circle.

6. The anti-clogging impeller for a chemical process pump according to claim 1 or 2, characterized in that: The front end of the main shaft protrudes from the blade and is provided with an external thread, the rear end of the extended shaft is provided with a countersunk hole with an internal thread, and the main shaft and the extended shaft are connected to each other through threads in the opposite direction of rotation.

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