Fluorine-lined magnetic chemical pump

Abstract

The utility model discloses a kind of fluorine-lined magnetic chemical pumps, it is related to chemical pump technical field, including base, the top of base is fixedly installed with first pump body shell, the side of first pump body shell is fixedly connected with second pump body shell, the top side of base is provided with motor, the motor is arranged in the side of second pump body shell, the inside of second pump body shell is fixedly installed with reinforcing sleeve, the inside of reinforcing sleeve is inserted with isolating sleeve, the inside of isolating sleeve is inserted with impeller, the inside of impeller is inserted with main shaft;The utility model is rotated by outer magnet, by magnetic coupling drive inner magnet rotor synchronous rotation, because inner magnet rotor is fixed with impeller, can drive impeller rotation, realize the liquid pumping function of chemical pump, when liquid pumping, inner magnet rotor and outer magnet between are provided with isolating sleeve, so that medium is completely sealed in pump body, based on magnetic coupling transmission principle, realize the transmission of "no leakage".

Description

Technical Field

[0001] This utility model relates to the field of chemical pump technology, specifically a fluoropolymer-lined magnetic chemical pump. Background Technology

[0002] Currently, domestically produced plastic magnetic pumps are mainly used in chemical, petroleum, pharmaceutical, food, and environmental protection industries. However, in high-end manufacturing industries such as semiconductors, photovoltaics, and LCD screens, domestically produced magnetic pumps still have significant shortcomings, especially in high-performance applications requiring large flow rates, high head, and corrosion resistance, where their technical specifications lag significantly behind international advanced levels. With the expansion of the 5G, AI, and photovoltaic industries, the demand for high-precision magnetic pumps in semiconductor manufacturing equipment is growing at an average annual rate of over 15%.

[0003] Currently, the core technologies of common plastic magnetic pump products still have shortcomings. Plastic magnetic pumps use traditional mechanical seal structures. Due to the poor corrosion resistance of traditional pump body materials, traditional mechanical seals are prone to leakage, resulting in "running, leaking, dripping, and seeping". They cannot meet the transportation needs of highly corrosive media (such as 98% sulfuric acid and 40% hydrofluoric acid) and pose certain safety hazards.

[0004] To address these issues, we designed a fluoropolymer-lined magnetic drive chemical pump. Utility Model Content

[0005] The purpose of this invention is to provide a fluoropolymer-lined magnetic chemical pump to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a fluoropolymer-lined magnetic chemical pump, including a base, a first pump body shell fixedly installed on the top of the base, a second pump body shell fixedly connected to one side of the first pump body shell, a motor disposed on one side of the top of the base, the motor disposed on one side of the second pump body shell, a reinforcing sleeve fixedly installed inside the second pump body shell, an isolation sleeve inserted inside the reinforcing sleeve, an impeller inserted inside the isolation sleeve, and a main shaft inserted inside the impeller.

[0007] Furthermore, an external magnet is fixedly installed on the outside of the drive shaft of the motor, and the external magnet is sleeved on the outside of the reinforcing sleeve.

[0008] Furthermore, a stationary ring is fitted onto the outer side of the impeller.

[0009] Furthermore, a motor connector is fixedly installed on the top of the base, and the motor is fixedly connected to the base through the motor connector.

[0010] Furthermore, an auxiliary plate is fixedly installed on one side of the base.

[0011] Furthermore, the impeller is integrally injection molded, and the impeller material is corrosion-resistant, high-strength fluoroplastic.

[0012] Furthermore, the impeller is equipped with an integrally formed internal magnetic rotor.

[0013] Furthermore, the isolation sleeve is made of Hastelloy alloy.

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

[0015] 1. Start the motor. The motor's drive shaft drives the outer magnet to rotate. When the outer magnet rotates, it drives the inner magnet rotor to rotate synchronously through magnetic coupling. Since the inner magnet rotor is fixed to the impeller, it can drive the impeller to rotate, thus realizing the liquid pumping function of the chemical pump. When the liquid is pumped, an isolation sleeve is set between the inner magnet rotor and the outer magnet to completely seal the medium in the pump body. Based on the magnetic coupling transmission principle, "leak-free" transmission is achieved. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of a half-section of the internal structure of the second pump body shell of this utility model;

[0018] Figure 3 This is a schematic diagram of the impeller structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the isolation sleeve and the reinforcing sleeve of this utility model.

[0020] In the diagram: 1. Base; 2. First pump body housing; 3. Second pump body housing; 4. Motor; 5. Main shaft; 6. Impeller; 7. Stationary ring; 8. Isolation sleeve; 9. Reinforcing sleeve; 10. External magnet; 11. Motor connector; 12. Auxiliary plate. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4This utility model provides a technical solution: including a base 1, a first pump body shell 2 fixedly installed on the top of the base 1, a second pump body shell 3 fixedly connected to one side of the first pump body shell 2, a motor 4 arranged on one side of the top of the base 1, the motor 4 arranged on one side of the second pump body shell 3, a reinforcing sleeve 9 fixedly installed inside the second pump body shell 3, an isolation sleeve 8 inserted inside the reinforcing sleeve 9, an impeller 6 inserted inside the isolation sleeve 8, a main shaft 5 inserted inside the impeller 6, an external magnet 10 fixedly installed on the outside of the drive shaft of the motor 4, the external magnet 10 sleeved on the outside of the reinforcing sleeve 9, a stationary ring 7 sleeved on the outside of the impeller 6, the impeller 6 is integrally injection molded, the impeller 6 is made of corrosion-resistant high-strength fluoroplastic, and an integrally molded internal magnetic rotor is arranged inside the impeller 6.

[0023] It should be noted that the pump body shell is made of ductile iron, and the pump body is designed according to standard flanges, which provides good mechanical strength and can withstand heavy pipeline loads. The fluoropolymer-lined magnetic drive pump is mainly based on the magnetic coupling transmission principle, and its structure does not have a mechanical seal or a shaft protruding from the pump casing. The basic parameters and technical performance of the fluoropolymer-lined magnetic drive pump comply with the HG / T2730-2012. Technical Conditions for Shaft-Sealless Rotary Power Pumps (Class I) standard.

[0024] The pump body liner, impeller 6 inner rotor, and isolation sleeve 8 are all made of pure F46 or PFA material through one-time molding, without impurity precipitation, making them very suitable for conveying high-purity and highly corrosive chemical liquids. The pump body is equipped with a flow-through component, which is existing technology and will not be described in detail here. The flow-through component is lined with F46 or PFA material, which is smooth and has excellent hydraulic performance, with features such as low hydraulic friction loss and high efficiency. The pump shaft, bearing sleeve, and dynamic and static rings are all made of pressureless sintered silicon carbide, which has the characteristics of high hardness, high wear resistance, and high corrosion resistance.

[0025] The magnetic pump features an axial suction, radial discharge, and rear-opening structure, allowing for pump maintenance without disassembling the inlet pipe. The entire pump unit employs a pull-out design, enabling one person to perform internal inspections and parts replacement without disassembling the piping. High-precision dynamic balancing and reinforced structural support are used, and the main shaft bearings utilize wear-resistant materials such as alumina ceramic and silicon carbide, enhancing operational stability and service life.

[0026] In practical implementation, motor 4 is started, and the drive shaft of motor 4 drives the outer magnet 10 to rotate. When the outer magnet 10 rotates, it drives the inner magnetic rotor to rotate synchronously through magnetic coupling. Since the inner magnetic rotor is fixed to the impeller 6, the rotation of the inner magnetic rotor drives the impeller 6. The rotation of the impeller 6 generates centrifugal force, which draws in the liquid in the pump cavity and pressurizes it for discharge. This realizes the function of chemical pump for pumping corrosive chemical media such as strong acids, strong alkalis, and solvents, and is suitable for media transportation scenarios in industries such as semiconductors, photovoltaics, LCD screens, electroplating, and chemicals. When the liquid is pumped, an isolation sleeve 8 is set between the inner magnetic rotor and the outer magnet 10, so that the medium is completely sealed in the pump body. The fluoropolymer-lined magnetic pump is mainly based on the principle of magnetic coupling transmission. Its structure has no mechanical seal or shaft protruding from the pump casing. It replaces the mechanical seal with magnetic transmission, and the sealing gap is ≤0.1mm, which completely solves the leakage risk of highly corrosive media (such as 98% sulfuric acid and 40% hydrofluoric acid) and achieves "leak-free" transmission.

[0027] See Figure 1 A motor connector 11 is fixedly installed on the top of the base 1, and the motor 4 is fixedly connected to the base 1 through the motor connector 11. An auxiliary plate 12 is fixedly installed on one side of the base 1.

[0028] By setting the motor connector 11, the stability of the motor 4 mounted on the top of the base 1 is improved.

[0029] See Figure 4 The isolation sleeve 8 is made of Hastelloy alloy.

[0030] By incorporating an isolation sleeve 8, which includes a reinforcing sleeve 9 made of imported PPS material, the pump unit can withstand higher system pressures and eliminate the heat generated by magnetic eddy currents in a metal sleeve. The isolation sleeve 8 is made of Hastelloy, a material with excellent properties, high strength, minimal magnetic force attenuation, and low heat generation, enabling better torque transmission and improved efficiency. The inner lining of the isolation sleeve 8 is made of F46 material, and the pressure-bearing reinforcement sleeve 9 is made of high-strength PP or carbon fiber.

[0031] Working Principle: When the device is in use, the motor 4 is started. The drive shaft of the motor 4 drives the outer magnet 10 to rotate. When the outer magnet 10 rotates, it drives the inner magnetic rotor to rotate synchronously through magnetic coupling. Since the inner magnetic rotor is fixed to the impeller 6, the rotation of the inner magnetic rotor drives the impeller 6. The rotation of the impeller 6 generates centrifugal force, which draws in the liquid in the pump cavity and pressurizes it for discharge. This realizes the function of a chemical pump for pumping corrosive chemical media such as strong acids, strong alkalis, and solvents. It is suitable for media transportation scenarios in industries such as semiconductors, photovoltaics, LCD screens, electroplating, and chemicals. When the liquid is pumped, an isolation sleeve 8 is set between the inner magnetic rotor and the outer magnet 10, so that the medium is completely sealed in the pump body. The fluoropolymer-lined magnetic pump is mainly based on the principle of magnetic coupling transmission. Its structure has no mechanical seal or shaft protruding from the pump casing. It replaces the mechanical seal with magnetic transmission. The sealing gap is ≤0.1mm, which completely solves the leakage risk of highly corrosive media (such as 98% sulfuric acid and 40% hydrofluoric acid) and achieves "leak-free" transmission.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fluoropolymer-lined magnetic drive chemical pump, comprising a base (1), characterized in that: A first pump housing (2) is fixedly installed on the top of the base (1). A second pump housing (3) is fixedly connected to one side of the first pump housing (2). A motor (4) is provided on one side of the top of the base (1). The motor (4) is located on one side of the second pump housing (3). A reinforcing sleeve (9) is fixedly installed inside the second pump housing (3). An isolation sleeve (8) is inserted inside the reinforcing sleeve (9). An impeller (6) is inserted inside the isolation sleeve (8). A main shaft (5) is inserted inside the impeller (6).

2. The fluoropolymer-lined magnetic drive chemical pump as described in claim 1, characterized in that: An external magnet (10) is fixedly installed on the outside of the drive shaft of the motor (4), and the external magnet (10) is sleeved on the outside of the reinforcing sleeve (9).

3. The fluoropolymer-lined magnetic drive chemical pump as described in claim 2, characterized in that: A stationary ring (7) is fitted onto the outer side of the impeller (6).

4. The fluoropolymer-lined magnetic drive chemical pump as described in claim 3, characterized in that: A motor connector (11) is fixedly installed on the top of the base (1), and the motor (4) is fixedly connected to the base (1) through the motor connector (11).

5. A fluoropolymer-lined magnetic drive chemical pump as described in claim 4, characterized in that: An auxiliary plate (12) is fixedly installed on one side of the base (1).

6. The fluoropolymer-lined magnetic drive chemical pump as described in claim 5, characterized in that: The impeller (6) is integrally injection molded, and the material of the impeller (6) is corrosion-resistant high-strength fluoroplastic.

7. A fluoropolymer-lined magnetic drive chemical pump as described in claim 6, characterized in that: The impeller (6) is equipped with an integrally formed internal magnetic rotor.

8. A fluoropolymer-lined magnetic drive chemical pump as described in claim 7, characterized in that: The isolation sleeve (8) is made of Hastelloy material.

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