Anti-winding impeller for submersible pumps

Abstract

This utility model discloses an anti-winding impeller for a submersible pump, comprising an impeller, an upper cover plate, blades, and a lower cover plate. The upper cover plate is disposed above the blades, and the blades are disposed above the lower cover plate. A flow hole is provided in the center of the lower cover plate. Six blades are arranged in a ring at intervals. Each blade is an arc-shaped plate, with a chamfered end facing the center of each blade. A long blade is fixedly installed at the center-facing end of each blade. A conveying cylinder is disposed below the impeller and is fixedly connected to the lower cover plate. This design achieves the anti-winding capability of the impeller, increases its practicality, and solves the problem that during the operation of a submersible pump, the impeller is easily entangled by long fibers, hair, and other impurities in the medium, causing impeller rotation to be obstructed, pump flow rate to decrease, and even potentially burning out the motor, affecting the normal operation and service life of the pump.

Description

Technical Field

[0001] This utility model relates to the field of impeller technology, specifically to an anti-winding impeller for submersible pumps. Background Technology

[0002] A submersible pump is a type of pump in which the impeller is submerged in the liquid being transported. It is commonly used to transport media containing impurities such as solid particles and fibers, such as liquid material transportation in chemical production, pharmaceutical liquid transportation after filtration, and juice clarification transportation in food processing. It is widely used in industries such as chemical, petroleum, and environmental protection. As the core component of fluid transportation, the impeller of a submersible pump directly affects the pump's efficiency, anti-clogging performance, and service life.

[0003] For example, the authorized patent with announcement number CN203879794U (a submersible pump booster impeller): it is composed of a pump shaft, impeller, pump casing, and booster impeller back cap connected together. The pump shaft is installed in the middle of the pump casing, two impellers are installed in the lower half of the pump shaft, and the booster impeller back cap is installed at the bottom of the pump shaft; the booster impeller back cap is trapezoidal.

[0004] Although the existing technology described above installs a booster impeller back cap on the pump to increase the outlet pressure, it lacks an anti-winding structure. Consequently, during the operation of the submersible pump, the impeller is easily entangled by impurities such as long fibers and hair in the medium, which obstructs the impeller's rotation, reduces the pump's flow rate, and may even burn out the motor, affecting the normal operation and service life of the pump. Therefore, there is an urgent market need to develop an anti-winding impeller for submersible pumps to help solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to provide an anti-winding impeller for submersible pumps, in order to solve the problem mentioned in the background art that during the operation of submersible pumps, the impeller is easily entangled by impurities such as long fibers and hair in the medium, which leads to obstruction of impeller rotation, reduction of pump flow, and even possible burnout of the motor, affecting the normal operation and service life of the pump.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-winding impeller for a submersible pump, comprising an impeller, the impeller comprising an upper cover plate, blades and a lower cover plate, the upper cover plate being disposed above the blades, the blades being disposed above the lower cover plate, a flow hole being disposed in the middle of the interior of the lower cover plate, six blades being disposed, the six blades being arranged in a ring at intervals, the blades being configured as arc-shaped plates, and each blade having a chamfered end facing the center.

[0007] Preferably, each of the blades has a long blade fixedly installed at the center-facing end.

[0008] Preferably, a conveying cylinder is provided below the impeller, the conveying cylinder is fixedly connected to the lower cover plate, and a bottom cylinder is provided below the conveying cylinder.

[0009] Preferably, an inner cylinder is fixedly installed inside the conveying cylinder, and a conical hole is provided inside the inner cylinder, wherein the diameter of the upper end of the conical hole is smaller than the diameter of the lower end of the conical hole.

[0010] Preferably, a cover is fixedly installed on the upper part of the bottom cylinder, the cover is fixedly connected to the conveying cylinder, and a connecting hole is provided in the middle of the cover, through which the conveying cylinder and the bottom cylinder are connected.

[0011] Preferably, a spiral fan blade is fixedly installed inside the bottom cylinder.

[0012] Preferably, a connecting sleeve is provided in the middle above the impeller, and the connecting sleeve is fixedly connected to the upper cover plate. A drive shaft is provided above the connecting sleeve, and the lower end of the drive shaft is inserted into the interior of the connecting sleeve and fixedly connected to the connecting sleeve by a shaft key. Multiple reinforcing strips are fixedly installed on the outer side of the connecting sleeve along the upper part of the impeller. The reinforcing strips are fixedly connected to the upper cover plate, and the multiple reinforcing strips are arranged in a ring at intervals.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The utility model, through the combination design of the upper cover plate, the arc blade and the lower cover plate with the flow hole, and the six blades arranged in a ring with the center end chamfered, greatly reduces the attachment points and entanglement space of impurities such as fibers and hair, so that impurities in the medium can pass smoothly through the impeller with the fluid, avoid accumulation or entanglement inside the impeller, and promote the rapid passage of impurities with the fluid. It solves the problem that the impeller is easily entangled by long fibers, hair and other impurities in the medium during the operation of the submersible pump, which leads to the impeller rotation being blocked and the pump flow rate decreasing, thus increasing its practicality.

[0015] (2) The utility model has long blades installed at the center end of each blade, which can cut or crush impurities such as fibers and hair that enter the impeller, making them easier to be discharged with the fluid, enhancing the anti-winding ability, avoiding long fibers from winding around the impeller and causing jamming, improving the reliability and continuous operation capability of the submersible pump, and increasing its practicality.

[0016] (3) By setting up a conveying cylinder, the inner cylinder of the conveying cylinder is provided with a conical hole. The diameter of the upper end of the conical hole is smaller than the diameter of the lower end of the conical hole, which can accelerate the fluid to enter the impeller, reduce the deposition of impurities, and the conical structure can guide the medium to flow towards the center. At the same time, it can form a stronger suction force in conjunction with the rotation of the impeller, which is conducive to the stable operation of the submersible pump and increases its practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the anti-winding impeller for a submersible pump according to the present invention;

[0018] Figure 2 This is a schematic diagram showing the connection between the blade and the lower cover plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the blade structure of this utility model;

[0020] Figure 4 This is a cross-sectional view of the conveying cylinder and bottom cylinder of this utility model.

[0021] In the diagram: 1. Drive shaft; 2. Impeller; 201. Upper cover plate; 202. Blade; 203. Lower cover plate; 2031. Flow hole; 3. Conveying cylinder; 4. Bottom cylinder; 401. Cover; 5. Long blade; 6. Spiral fan blade; 7. Inner cylinder; 701. Tapered hole; 8. Connecting sleeve; 801. Reinforcing strip. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 An embodiment of this utility model provides an anti-winding impeller for a submersible pump, comprising an impeller 2, the impeller 2 comprising an upper cover plate 201, blades 202 and a lower cover plate 203, the upper cover plate 201 being disposed above the blades 202, the blades 202 being disposed above the lower cover plate 203, a flow hole 2031 being disposed in the middle of the interior of the lower cover plate 203, six blades 202 being disposed, the six blades 202 being arranged in a ring at intervals, the blades 202 being configured as arc plates, and each blade 202 having a chamfered end facing the center.

[0024] The six annularly spaced blades 202 in impeller 2, after being chamfered at their center ends, greatly reduce the attachment points and entanglement space of impurities such as fibers and hair. This allows impurities in the medium to pass smoothly through the impeller with the fluid, preventing them from accumulating or entangled inside impeller 2. This facilitates the rapid passage of impurities with the fluid, solving problems such as impeded rotation and reduced flow rate caused by entanglement in impeller 2. This helps the submersible pump maintain a stable flow output, reduces the risk of motor burnout due to overload, extends the equipment maintenance cycle and overall service life, provides a guarantee for continuous industrial production, and increases practicality.

[0025] Please see Figure 2 and Figure 3 Each blade 202 has a long blade 5 fixedly installed at the center end.

[0026] The long blade 5 added to the center end of each blade 202 can cut or break up impurities such as fibers and hair that enter the impeller, making them easier to be discharged with the fluid. This structure further enhances the anti-winding capability, especially suitable for high-concentration fiber media, to prevent long fibers from winding around the impeller and causing jamming. The combination design of the long blade 5 and the chamfered blade 202 forms a dual anti-winding mechanism, which not only reduces the retention of impurities, but also actively cuts off fibers that may be wound, improving the reliability and continuous operation capability of the submersible pump and reducing the maintenance frequency.

[0027] Please see Figure 1 and Figure 4 Below the impeller 2, there is a conveying cylinder 3. The conveying cylinder 3 is fixedly connected to the lower cover plate 203. Below the conveying cylinder 3, there is a bottom cylinder 4. Inside the conveying cylinder 3, there is an inner cylinder 7. Inside the inner cylinder 7, there is a conical hole 701. The diameter of the upper end of the conical hole 701 is smaller than the diameter of the lower end of the conical hole 701.

[0028] The conical orifice 701 of the inner cylinder 7 can accelerate the flow of fluid into the impeller and reduce the deposition of impurities. The conical structure can guide the medium to flow towards the center, avoiding the accumulation of particles at the bottom. At the same time, it works with the rotation of the impeller to form a stronger suction force, improve the efficiency of the submersible pump, reduce the risk of blockage, and is conducive to the long-term stable operation of the submersible pump.

[0029] Please see Figure 4 A cover 401 is fixedly installed on the upper part of the bottom cylinder 4. The cover 401 is fixedly connected to the conveying cylinder 3. A connecting hole is provided in the middle of the cover 401, and the conveying cylinder 3 and the bottom cylinder 4 are connected through the connecting hole.

[0030] The cover 401 ensures a stable connection between the bottom cylinder 4 and the conveying cylinder 3, while the connecting hole ensures smooth flow of the medium, avoids local blockage, and increases practicality.

[0031] Please see Figure 4 The bottom cylinder 4 has a fixed spiral fan blade 6 installed inside.

[0032] The spiral fan blade 6 can pre-stir the medium entering the bottom cylinder 4, prevent particle deposition, promote the uniform distribution of impurities, avoid local accumulation and blockage, further protect the impeller, and increase practicality.

[0033] Please see Figure 1 A connecting sleeve 8 is provided in the middle above the impeller 2, and the connecting sleeve 8 is fixedly connected to the upper cover plate 201. A drive shaft 1 is provided above the connecting sleeve 8. The lower end of the drive shaft 1 is inserted into the interior of the connecting sleeve 8 and fixedly connected to the connecting sleeve 8 by a shaft key. Multiple reinforcing strips 801 are fixedly installed on the outer side of the connecting sleeve 8 along the upper part of the impeller 2. The reinforcing strips 801 are fixedly connected to the upper cover plate 201. The multiple reinforcing strips 801 are arranged in a ring at intervals.

[0034] The connecting sleeve 8 is fixed to the drive shaft 1 by a shaft key to ensure efficient power transmission and prevent slippage or loosening. The reinforcing strips 801 are arranged in a ring to enhance the structural strength of the impeller 2, prevent deformation or vibration during high-speed rotation, improve operational stability, extend the overall service life of the pump, and increase its practicality.

[0035] Working principle: During use, the drive end of the submersible pump drives the drive shaft 1 to rotate, which drives the impeller 2 to rotate at high speed through the connecting sleeve 8. The medium enters from the bottom cylinder 4, rises after being pre-stirred by the spiral fan blade 6, and flows to the impeller area through the conical hole 701 at an accelerated speed. The six chamfered arc blades 202 form an optimized flow channel, making it difficult for impurities such as fibers and hair to adhere. Meanwhile, the central long blade 5 actively cuts impurities that may be entangled. The medium is discharged under the centrifugal action of the rotating blades 202.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. Anti-entrapment impeller for submersible pumps, comprising an impeller (2), characterized in that: The impeller (2) includes an upper cover plate (201), blades (202) and a lower cover plate (203). The upper cover plate (201) is located above the blades (202), and the blades (202) are located above the lower cover plate (203). A flow hole (2031) is provided in the middle of the interior of the lower cover plate (203). There are six blades (202) arranged in a ring with intervals. The blades (202) are set as arc plates. The end of each blade (202) facing the center is chamfered. A long blade (5) is fixedly installed at the end of each blade (202) facing the center.

2. The anti-winding impeller for a submersible pump according to claim 1, characterized in that: A conveying cylinder (3) is provided below the impeller (2), the conveying cylinder (3) is fixedly connected to the lower cover plate (203), and a bottom cylinder (4) is provided below the conveying cylinder (3).

3. The anti-winding impeller for a submersible pump according to claim 2, characterized in that: The inner cylinder (7) is fixedly installed inside the conveying cylinder (3). The inner cylinder (7) has a conical hole (701) inside. The diameter of the upper end of the conical hole (701) is smaller than the diameter of the lower end of the conical hole (701).

4. The anti-winding impeller for a submersible pump according to claim 3, characterized in that: A cover (401) is fixedly installed on the upper part of the bottom cylinder (4). The cover (401) is fixedly connected to the conveying cylinder (3). A connecting hole is provided in the middle of the cover (401). The conveying cylinder (3) and the bottom cylinder (4) are connected through the connecting hole.

5. The anti-winding impeller for a submersible pump according to claim 4, characterized in that: The bottom cylinder (4) is fixedly installed with a spiral fan blade (6).

6. The anti-winding impeller for a submersible pump according to claim 1, characterized in that: A connecting sleeve (8) is provided in the middle above the impeller (2), and the connecting sleeve (8) is fixedly connected to the upper cover plate (201). A drive shaft (1) is provided above the connecting sleeve (8). The lower end of the drive shaft (1) is inserted into the interior of the connecting sleeve (8) and fixedly connected to the connecting sleeve (8) by a shaft key. Multiple reinforcing strips (801) are fixedly installed on the outer side of the connecting sleeve (8) along the upper part of the impeller (2). The reinforcing strips (801) are fixedly connected to the upper cover plate (201), and the multiple reinforcing strips (801) are arranged in a ring at intervals.

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