Fluorine-lined vortex magnetic drive pump for conveying acidic materials

Abstract

The utility model discloses a fluorine-lined vortex magnetic drive pump for conveying acidic materials, which comprises a pump body, a pump cover mounted at the left end of the pump body and enclosing with a pump cavity to form an annular cavity, a pump shaft rotatably penetrating through the annular cavity, an inner magnetic rotor fixedly arranged at the right end of the pump shaft, and an isolation sleeve fixedly arranged on the right end face of the pump body and covering the inner magnetic rotor. The outer magnetic rotor is located on the outer side of the right end of the isolation sleeve, an outer magnetic shaft fixedly arranged on the right end face of the isolation sleeve is fixedly connected with the power output end of the driving mechanism, the left end of the pump shaft is fixedly provided with an impeller located in the annular cavity, and fluorine lining layers are arranged on the right side face of the pump cover, the left side face, the right side face and the inner wall face of an installation hole in the right end face of the pump body. A pump cover wear-resistant ring plate which is correspondingly positioned on the left side surface of the blade on the peripheral side of the impeller is embedded and fixedly arranged on the peripheral side of the right side surface of the pump cover; and a pump body wear-resistant ring plate which is correspondingly positioned on the right side surface of the blade on the peripheral side of the impeller is embedded and fixedly arranged on the peripheral side of the left side surface of the pump body. The wear resistance of the pump cover inner side face and the pump body inner side face is obviously improved, and the service life is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic pumps, in particular to a fluorine-lined vortex magnetic pump for conveying acidic materials. Background Art

[0002] The magnetic pump is a fluid conveying machine, which consists of an outer magnetic rotor, an inner magnetic rotor and a non-magnetic isolation sleeve. When the motor drives the outer magnetic rotor to rotate, the magnetic field can penetrate the air gap and non-magnetic materials, driving the inner magnetic rotor connected to the impeller to rotate synchronously, realizing contactless synchronous transmission of power, and converting the dynamic sealing structure prone to leakage into a static sealing structure with zero leakage. Since the pump shaft and the inner magnetic rotor are completely enclosed by the pump body and the isolation sleeve, the "running, bubbling, dripping, and leaking" problems are completely solved, eliminating the safety hazards of flammable, explosive, toxic, and harmful media leaking through the pump seal in industries such as oil refining and chemical industry. Therefore, magnetic pumps are increasingly favored by various industries.

[0003] At present, most of the magnetic pumps used to transport acidic liquid materials are vortex magnetic pumps. The magnetic pump of this structure includes a pump cover, a pump body, an isolation sleeve, an outer magnetic rotor and an inner magnetic rotor. The pump cover is installed on the front port of the pump body, and a suspension body is installed at the rear port of the pump body. The pump cover and the inner cavity of the pump body are assembled to form a pump chamber for installing an impeller. A pump shaft located in the front and rear directions is rotatably installed inside the pump chamber. The impeller is fixedly installed at the front end of the pump shaft, and the inner magnetic rotor is fixedly installed at the rear end of the pump shaft. The isolation sleeve is installed on the right side of the pump body and is covered on the inner magnetic rotor. The outer magnetic rotor is correspondingly covered on the outer side of the rear end of the isolation sleeve, and the outer magnetic shaft fixedly arranged at the center of the rear end face of the outer magnetic rotor is fixedly connected to the output shaft of the drive motor, and the right end of the suspension body is fixedly connected to the flange of the drive motor. The problem of the vortex magnetic pump of this structure is that the front and rear sides of the blades on the impeller wear the inner side of the pump cover and the inner side of the pump body at a faster rate during operation, resulting in poor durability of the magnetic pump in transporting acidic materials to maintain high-efficiency operation, and also resulting in a short overall service life of the magnetic pump. To this end, the utility model proposes a fluorine-lined vortex magnetic pump for conveying acidic materials, in order to solve the above technical problems. Summary of the invention

[0004] The utility model aims to overcome the defects in the prior art and provide a fluorine-lined vortex magnetic pump for conveying acidic materials, wherein a fluorine-lined layer is provided on the sides of the pump cover and the pump body that are in contact with the acidic liquid material, and at the same time, a pump cover wear-resistant ring plate is embedded and fixed on the outer peripheral side of the right side of the pump cover, and a pump body wear-resistant ring plate is embedded and fixed on the outer peripheral side of the left side of the pump body, and the blades on the outer peripheral side of the impeller are located between the pump cover wear-resistant ring plate and the pump body wear-resistant ring plate, which significantly improves the wear resistance of the inner side of the pump cover and the inner side of the pump body, thereby helping to improve the durability of the magnetic pump when efficiently conveying acidic liquid materials, and at the same time greatly prolonging the overall service life of the magnetic pump; the structural design is simple and reasonable, the preparation and implementation feasibility is high, and the practicability is strong.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is to design a fluorine-lined vortex magnetic pump for conveying acidic materials, including a pump cover, a pump body, a pump shaft, an isolation sleeve, an inner magnetic rotor, an outer magnetic rotor, a suspension body, an outer magnetic shaft and a driving mechanism. The pump body has a pump cavity with an opening facing the left side, the pump cover is detachably docked and fixedly installed on the left end of the pump body and encloses the pump cavity to form an annular cavity, the pump shaft passes through the annular cavity, and the left end of the pump shaft is rotatably installed on the center of the pump cover through a bearing assembly 1, the middle part passes through a bearing assembly 2 and is rotatably installed on the mounting hole on the right end face of the pump body, the right end part is fixedly provided with the inner magnetic rotor, the isolation sleeve is fixedly provided on the right end face of the pump body and covers the inner magnetic rotor, the outer magnetic rotor is located on the outside of the right end of the isolation sleeve, and The inner magnetic rotor is coaxially arranged with the outer magnetic rotor, the right end of the outer magnetic shaft fixedly arranged at the center of the right end face of the isolation sleeve is fixedly connected to the power output end of the driving mechanism, the right end of the suspension body is fixedly connected to the flange plate at the left end of the driving mechanism, the left end of the pump shaft is fixedly provided with an impeller corresponding to the inside of the annular cavity, the outer side face of the pump body has a liquid inlet and a liquid outlet which are connected with the internal pump cavity, the right side face of the pump cover, the left and right side faces of the pump body and the inner wall face of the mounting hole of the right end face are all provided with a fluorine lining layer, the outer peripheral side of the right side face of the pump cover is embedded with a pump cover wear-resistant ring plate, the outer peripheral side of the left side face of the pump body is embedded with a pump body wear-resistant ring plate, the pump cover wear-resistant ring plate corresponds to the left side of the outer peripheral side blades of the impeller, and the pump body wear-resistant ring plate corresponds to the right side of the outer peripheral side blades of the impeller.

[0006] The utility model discloses a fluorine-lined vortex magnetic pump for conveying acidic materials. A fluorine-lined layer is provided on the sides of the pump cover and the pump body that are in contact with the acidic material. At the same time, a pump cover wear-resistant ring plate is embedded and fixed on the outer peripheral side of the right side surface of the pump cover, and a pump body wear-resistant ring plate is embedded and fixed on the outer peripheral side of the left side surface of the pump body. The blades on the outer peripheral side of the impeller are located between the pump cover wear-resistant ring plate and the pump body wear-resistant ring plate, which significantly improves the wear resistance of the inner side surface of the pump cover and the inner side surface of the pump body, thereby helping to improve the durability of the magnetic pump when efficiently conveying acidic materials, and greatly prolonging the overall service life of the magnetic pump. The structural design is simple and reasonable, the preparation and implementation feasibility is high, and the practicability is strong.

[0007] The preferred technical solution is that the material of the pump cover wear-resistant ring plate and the pump body wear-resistant ring plate are both one of PEEK, SiC, and graphite. The pump cover wear-resistant ring plate and the pump body wear-resistant ring plate are both made of acid corrosion-resistant materials, thereby further improving the durability of the magnetic pump when efficiently conveying acid materials, ensuring that the magnetic pump of the utility model can be smoothly prepared and implemented.

[0008] A further preferred technical solution is that the center of the pump cover has a pump shaft mounting groove 1 extending to the left and opening toward the right end, the lining fluorine layer located at the left end of the inner wall surface of the pump shaft mounting groove 1 has an annular step eaves body 1, the center of the right end surface of the pump body has a pump shaft mounting groove 2 extending to the right and opening toward the left end, the lining fluorine layer located on the inner wall surface of the mounting hole on the right end surface of the pump body forms an annular step eaves body 2 extending to the inner side of the right end portion of the pump shaft mounting groove 2, and the left end of the pump shaft has a limiting circular plate, the limiting circular plate is embedded and abutted against the left end bottom of the pump shaft mounting groove 1, and the outer peripheral side of the limiting circular plate has a corrosion-resistant layer;

[0009] The bearing assembly 1 includes a sliding bearing 1 and a shaft sleeve 1, wherein the shaft sleeve 1 is fixedly mounted on the left end of the pump shaft, the sliding bearing 1 is mounted on the outside of the shaft sleeve 1, and the sliding bearing 1 is embedded and fixedly mounted inside the pump shaft mounting groove 1, the left end of the shaft sleeve 1 abuts against the outer peripheral side edge of the limiting circular plate, the right end abuts against the annular groove on the left side surface of the impeller, and the left end of the sliding bearing 1 abuts against the annular step eaves 1;

[0010] The bearing assembly 2 includes a sliding bearing 2 and a shaft sleeve 2. The shaft sleeve 2 is sleeved and fixed in the middle of the pump shaft. The sliding bearing 2 is installed on the outside of the shaft sleeve 2, and the sliding bearing 2 is embedded and fixed inside the pump shaft mounting groove 2. The right end of the shaft sleeve 2 passes through the mounting hole on the right end surface of the pump body and abuts against the inner magnetic rotor, and the left end abuts against the annular groove on the right side surface of the impeller. The right end of the sliding bearing 2 abuts against the annular step eaves 2. The installation method of the pump shaft on the pump cover and the pump body is simple, and the limit installation method between the components has good adaptability, which helps to improve the assembly and processing efficiency of the magnetic pump of the utility model.

[0011] A further preferred technical solution is that the corrosion-resistant layer and the impeller are both made of PEEK material. PEEK material has good wear resistance and acid corrosion resistance, ensuring that the impeller has a long service life.

[0012] A further preferred technical solution is that the right end of the pump shaft is sleeved with a shaft cap for fixing the inner magnetic rotor to the right end of the pump shaft, and the inner magnetic rotor sealing cover is installed on the mounting hole at the center of the right end face of the inner magnetic rotor. The fixing and mounting method of the inner magnetic rotor on the right end of the pump shaft is simple, and the inner magnetic rotor sealing cover seals the right end of the pump shaft and the shaft cap, effectively preventing the acidic material being transported from contacting the right end of the pump shaft and the shaft cap, and preventing the two from being corroded by the acidic material.

[0013] A further preferred technical solution also includes a base, the lower end of the pump body has a support leg, and the pump body is fixed to the base by a bolt assembly that penetrates the mounting hole on the support leg and the screw hole on the upper end surface of the base.

[0014] A further preferred technical solution is that the driving mechanism is a motor.

[0015] A further preferred technical solution is that one of the liquid inlet and the liquid outlet is located on the upper side of the pump body, and the other of the liquid inlet and the liquid outlet is located on the front side or the rear side of the pump body. The positions of the liquid inlet and the liquid outlet are reasonably distributed, which is convenient for docking and connecting with the feed pipe or the discharge pipe when in use.

[0016] A further preferred technical solution is that the parameters of the fluorine-lined vortex magnetic pump are as follows: the diameter of the liquid inlet is DN25-65, and the flow range is 0.5-8m 3 / h, head range is 15~120m, pressure level is 1.6MPa, speed range is 1450~2900r / min, power range is 0.55~22KW, working temperature range is 40~180℃. The magnetic pump of the utility model is a high head and low flow magnetic pump, with reasonable parameter settings, high working efficiency, wide application range, and strong universal practicability.

[0017] The advantages and beneficial effects of the utility model are:

[0018] 1. The utility model is a fluorine-lined vortex magnetic pump for conveying acidic materials. A fluorine-lined layer is provided on the sides of the pump cover and the pump body that are in contact with the acidic liquid material. At the same time, a pump cover wear-resistant ring plate is embedded and fixed on the outer peripheral side of the right side of the pump cover, and a pump body wear-resistant ring plate is embedded and fixed on the outer peripheral side of the left side of the pump body. The blades on the outer peripheral side of the impeller are located between the pump cover wear-resistant ring plate and the pump body wear-resistant ring plate, which significantly improves the wear resistance of the inner side of the pump cover and the inner side of the pump body, thereby helping to improve the durability of the magnetic pump when efficiently conveying acidic liquid materials, and greatly prolonging the overall service life of the magnetic pump; the structural design is simple and reasonable, the preparation and implementation feasibility is high, and the practicability is strong.

[0019] 2. The material of the wear-resistant ring plate of the pump cover and the wear-resistant ring plate of the pump body are both PEEK, SiC, and graphite. The wear-resistant ring plate of the pump cover and the wear-resistant ring plate of the pump body are both made of materials resistant to acid corrosion, thereby further improving the durability of the magnetic pump when efficiently conveying acid materials, ensuring that the magnetic pump of the utility model can be smoothly prepared and implemented.

[0020] 3. The corrosion-resistant layer and the impeller are both made of PEEK material. PEEK material has good wear resistance and acid corrosion resistance, ensuring that the impeller has a long service life.

[0021] 4. The fixing installation method of the inner magnetic rotor at the right end of the pump shaft is simple. The inner magnetic rotor sealing cover seals the right end of the pump shaft and the shaft cap, effectively preventing the transported acidic materials from contacting the right end of the pump shaft and the shaft cap, and avoiding corrosion of the two by the acidic materials.

[0022] 5. The parameters of the fluorine-lined vortex magnetic pump are as follows: the diameter of the liquid inlet is DN25-65, and the flow range is 0.5-8m 3 / h, head range is 15~120m, pressure level is 1.6MPa, speed range is 1450~2900r / min, power range is 0.55~22KW, working temperature range is 40~180℃. The magnetic pump of the utility model is a high head and low flow magnetic pump, with reasonable parameter settings, high working efficiency, wide application range, and strong universal practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front view of the fluorine-lined vortex magnetic pump for conveying acidic materials of the utility model;

[0024] Figure 2 It is a longitudinal cross-sectional view of the fluorine-lined vortex magnetic pump for conveying acidic materials according to the utility model along the axial direction;

[0025] Figure 3 yes Figure 2 A partial enlarged view of the H in the middle;

[0026] Figure 4 It is a longitudinal cross-sectional view of the assembly relationship between the pump cover and the pump body.

[0027] In the figure: 1. pump cover; 2. sliding bearing 1; 3. shaft sleeve 1; 4. pump cover wear-resistant ring plate; 5. impeller; 6. pump body; 7. pump body wear-resistant ring plate; 8. sliding bearing 2; 9. shaft sleeve 2; 10. pump shaft 11. isolation sleeve 12. inner magnetic rotor; 13. outer magnetic rotor; 14. shaft cap; 15. inner magnetic rotor sealing cover; 16. suspension body; 17. base; 18. outer magnetic shaft; 19. driving mechanism; 20. annular cavity; 1-1. pump shaft mounting groove 1; 5-1. blade; 6-1. liquid inlet; 6-2. liquid outlet; 6-3. support leg; 6-4. pump cavity; 6-5. pump shaft mounting groove 2; 10-1. limiting circular plate; A. fluorine lining layer; A-1. annular step eaves 1; A-2. annular step eaves 2; B. corrosion resistant layer; C. acidic liquid material. DETAILED DESCRIPTION

[0028] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0029] Example

[0030] like Figures 1 to 4As shown, the utility model is a fluorine-lined vortex magnetic pump for conveying acidic materials, comprising a pump cover 1, a pump body 6, a pump shaft 10, an isolation sleeve 11, an inner magnetic rotor 12, an outer magnetic rotor 13, a suspension body 16, an outer magnetic shaft 18 and a driving mechanism 19, wherein the pump body 6 has a pump cavity 6-4 with an opening toward the left side, the pump cover 1 is detachably docked and fixedly installed on the left end of the pump body 6 and enclosed with the pump cavity 6-4 to form an annular cavity 20, the pump shaft 10 passes through the annular cavity 20, and the left end of the pump shaft 10 is rotatably installed on the center of the pump cover 1 through a bearing assembly 1, the middle part passes through a bearing assembly 2 and is rotatably installed on the mounting hole on the right end face of the pump body 6, and the right end part is fixedly provided with the inner magnetic rotor 12, the isolation sleeve 11 is fixedly provided on the right end face of the pump body 6 and covers the inner magnetic rotor 12, the outer magnetic rotor 13 is located on the outside of the right end of the isolation sleeve 11, and the inner magnetic rotor 12 The right end of the outer magnetic shaft 18, which is coaxially arranged with the outer magnetic rotor 13 and fixedly arranged at the center of the right end face of the isolation sleeve 11, is fixedly connected to the power output end of the driving mechanism 19. The right end of the suspension body 16 is fixedly connected to the flange plate of the left end of the driving mechanism 19. The left end of the pump shaft 10 is fixedly provided with an impeller 5 corresponding to the inside of the annular cavity 20. The outer side surface of the pump body 6 has a liquid inlet 6-1 and a liquid outlet 6-2 which are connected with the internal pump cavity 6-4 thereof. The right side surface of the pump cover 1, the left and right sides of the pump body 6 and the inner wall surface of the mounting hole of the right end face are all provided with a fluorine lining layer A. The outer peripheral side of the right side surface of the pump cover 1 is embedded with a pump cover wear-resistant ring plate 4, and the outer peripheral side of the left side surface of the pump body 6 is embedded with a pump body wear-resistant ring plate 7. The pump cover wear-resistant ring plate 4 corresponds to the left side of the outer peripheral blade 5-1 of the impeller 5, and the pump body wear-resistant ring plate 7 corresponds to the right side of the outer peripheral blade 5-1 of the impeller 5.

[0031] Preferably, the material of the pump cover wear-resistant ring plate 4 and the material of the pump body wear-resistant ring plate 7 are both one of PEEK, SiC and graphite.

[0032] Further preferably, the center of the pump cover 1 has a pump shaft mounting groove 1-1 extending to the left and opening toward the right end, the fluorine lining layer A located at the left end of the inner wall surface of the pump shaft mounting groove 1-1 has an annular step eaves body 1-1, the center of the right end surface of the pump body 6 has a pump shaft mounting groove 2 6-5 extending to the right and opening toward the left end, the fluorine lining layer A located on the inner wall surface of the mounting hole on the right end surface of the pump body 6 forms an annular step eaves body 2 A-2 extending to the inner side of the right end portion of the pump shaft mounting groove 2 6-5, and the left end of the pump shaft 10 has a limiting circular plate 10-1, the limiting circular plate 10-1 is embedded and abutted against the left end bottom of the pump shaft mounting groove 1-1, and the outer peripheral side of the limiting circular plate 10-1 has a corrosion-resistant layer B;

[0033] The bearing assembly 1 includes a sliding bearing 2 and a sleeve 3, the sleeve 3 is sleeved and fixed on the left end of the pump shaft 10, the sliding bearing 2 is installed on the outside of the sleeve 3, and the sliding bearing 2 is embedded and fixed inside the pump shaft mounting groove 1-1, the left end of the sleeve 3 abuts on the outer peripheral side edge of the limiting circular plate 10-1, and the right end abuts on the annular groove on the left side of the impeller 5, and the left end of the sliding bearing 2 abuts on the annular step eaves A-1;

[0034] The bearing assembly 2 includes a sliding bearing 28 and a sleeve 29. The sleeve 29 is sleeved and fixed in the middle of the pump shaft 10. The sliding bearing 28 is installed on the outside of the sleeve 29, and the sliding bearing 28 is embedded and fixed in the pump shaft mounting groove 2 6-5. The right end of the sleeve 29 passes through the mounting hole on the right end face of the pump body 6 and abuts against the inner magnetic rotor 12, and the left end abuts against the annular groove on the right side face of the impeller 5. The right end of the sliding bearing 28 abuts against the annular step eaves body 2 A-2.

[0035] Further preferably, the corrosion-resistant layer B and the impeller 5 are both made of PEEK.

[0036] Further preferably, the right end of the pump shaft 10 is sleeved with a shaft cap 14 for fixing the inner magnetic rotor 12 to the right end of the pump shaft 10 , and the inner magnetic rotor sealing cover 15 is installed on the mounting hole at the center of the right end face of the inner magnetic rotor 12 .

[0037] Further preferably, it also includes a base 17, the lower end of the pump body 6 has a support leg 6-3, and the pump body 6 is fixed to the base 17 by a bolt assembly passing through the mounting hole on the support leg 6-3 and the screw hole on the upper end surface of the base 17.

[0038] Further preferably, the driving mechanism 19 is a motor.

[0039] Further preferably, one of the liquid inlet 6 - 1 and the liquid outlet 6 - 2 is located on the upper side of the pump body 6 , and the other of the liquid inlet 6 - 1 and the liquid outlet 6 - 2 is located on the front side or the rear side of the pump body 6 .

[0040] Further preferably, the parameters of the fluorine-lined vortex magnetic pump are as follows: the diameter of the liquid inlet 6-1 is DN25-65, and the flow range is 0.5-8m 3 / h, the head range is 15~120m, the pressure level is 1.6MPa, the speed range is 1450~2900r / min, the power range is 0.55~22KW, and the operating temperature range is 40~180℃.

[0041] The utility model discloses a fluorine-lined vortex magnetic pump for conveying acidic materials. A fluorine-lined layer is provided on the sides of the pump cover and the pump body that are in contact with the acidic material. At the same time, a pump cover wear-resistant ring plate is embedded and fixed on the outer peripheral side of the right side surface of the pump cover, and a pump body wear-resistant ring plate is embedded and fixed on the outer peripheral side of the left side surface of the pump body. The blades on the outer peripheral side of the impeller are located between the pump cover wear-resistant ring plate and the pump body wear-resistant ring plate, which significantly improves the wear resistance of the inner side surface of the pump cover and the inner side surface of the pump body, thereby helping to improve the durability of the magnetic pump when efficiently conveying acidic materials, and greatly prolonging the overall service life of the magnetic pump. The structural design is simple and reasonable, the preparation and implementation feasibility is high, and the practicability is strong.

[0042] The utility model discloses a fluorine-lined vortex magnetic pump for conveying acidic materials. When in use, the side surfaces of the area filled with the acidic liquid material C are provided with a fluorine-lined layer or a corrosion-resistant layer (see attached Figure 3 ), thereby ensuring that each component of the fluorine-lined vortex magnetic pump has good acid corrosion resistance and extending the overall service life of the magnetic pump.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fluorine-lined vortex magnetic pump for conveying acidic materials, comprising a pump cover (1), a pump body (6), a pump shaft (10), an isolation sleeve (11), an inner magnetic rotor (12), an outer magnetic rotor (13), a suspension body (16), an outer magnetic shaft (18) and a driving mechanism (19), wherein the pump body (6) has a pump cavity (6-4) with an opening toward the left side, the pump cover (1) is detachably docked and fixedly mounted on the left end of the pump body (6) and enclosed with the pump cavity (6-4) to form an annular cavity (20), the pump shaft (10) passes through the annular cavity (20), and the left end of the pump shaft (10) is rotatably mounted on the center of the pump cover (1) through a bearing assembly 1, the middle part passes through a bearing assembly 2 and is rotatably mounted on the mounting hole on the right end face of the pump body (6), and the right end part is fixedly provided with the The inner magnetic rotor (12) of the pump body (6) is provided, the isolation sleeve (11) is fixedly mounted on the right end surface of the pump body (6) and is covered on the inner magnetic rotor (12), the outer magnetic rotor (13) is located outside the right end of the isolation sleeve (11), and the inner magnetic rotor (12) and the outer magnetic rotor (13) are coaxially arranged, the right end of the outer magnetic shaft (18) fixedly mounted at the center of the right end surface of the isolation sleeve (11) is fixedly connected to the power output end of the driving mechanism (19), the right end of the suspension body (16) is fixedly connected to the flange at the left end of the driving mechanism (19), the left end of the pump shaft (10) is fixedly provided with an impeller (5) corresponding to the inside of the annular cavity (20), the outer side surface of the pump body (6) has a liquid inlet (6-1) and a liquid outlet (6-2) which are connected to the internal pump cavity (6-4), and is characterized in that: The right side surface of the pump cover (1), the left and right side surfaces of the pump body (6) and the inner wall surface of the mounting hole of the right end surface are all provided with a fluorine lining layer (A); the outer peripheral side of the right side surface of the pump cover (1) is embedded with a pump cover wear-resistant ring plate (4); the outer peripheral side of the left side surface of the pump body (6) is embedded with a pump body wear-resistant ring plate (7); the pump cover wear-resistant ring plate (4) is located corresponding to the left side surface of the outer peripheral side blades (5-1) of the impeller (5), and the pump body wear-resistant ring plate (7) is located corresponding to the right side surface of the outer peripheral side blades (5-1) of the impeller (5).

2. The fluorine-lined vortex magnetic pump for conveying acidic materials according to claim 1, characterized in that: The material of the pump cover wear-resistant ring plate (4) and the material of the pump body wear-resistant ring plate (7) are both one of PEEK, SiC and graphite.

3. The fluorine-lined vortex magnetic pump for conveying acidic materials according to claim 2, characterized in that: The pump cover (1) has a pump shaft mounting groove (1-1) extending to the left and opening toward the right end at the center, and a ring-shaped step eaves (A-1) is provided on the fluorine lining layer (A) at the left end of the inner wall surface of the pump shaft mounting groove (1-1). The pump body (6) has a pump shaft mounting groove (6-5) extending to the right and opening toward the left end at the center of the right end surface, and the fluorine lining layer (A) located on the inner wall surface of the mounting hole of the right end surface of the pump body (6) forms a ring-shaped step eaves (A-2) extending toward the inner side of the right end of the pump shaft mounting groove (6-5). The pump shaft (10) has a limiting circular plate (10-1) at the left end, and the limiting circular plate (10-1) is embedded and abutted against the bottom of the left end of the pump shaft mounting groove (1-1). The outer peripheral side of the limiting circular plate (10-1) has a corrosion-resistant layer (B). The bearing assembly 1 comprises a sliding bearing 1 (2) and a shaft sleeve 1 (3), wherein the shaft sleeve 1 (3) is sleeved and fixedly arranged on the left end of the pump shaft (10), the sliding bearing 1 (2) is installed on the outside of the shaft sleeve 1 (3), and the sliding bearing 1 (2) is embedded and fixedly arranged inside the pump shaft mounting groove 1 (1-1), the left end of the shaft sleeve 1 (3) abuts against the outer peripheral side edge of the limiting circular plate (10-1), and the right end abuts against the annular groove on the left side surface of the impeller (5), and the left end of the sliding bearing 1 (2) abuts against the annular step eaves 1 (A-1); The bearing assembly 2 comprises a sliding bearing 2 (8) and a shaft sleeve 2 (9), wherein the shaft sleeve 2 (9) is sleeved and fixedly arranged in the middle of the pump shaft (10), the sliding bearing 2 (8) is installed on the outside of the shaft sleeve 2 (9), and the sliding bearing 2 (8) is embedded and fixedly arranged in the inside of the pump shaft mounting groove 2 (6-5), the right end of the shaft sleeve 2 (9) passes through the mounting hole on the right end surface of the pump body (6) and abuts against the inner magnetic rotor (12), and the left end abuts against the annular groove on the right side surface of the impeller (5), and the right end of the sliding bearing 2 (8) abuts against the annular step eaves 2 (A-2).

4. The fluorine-lined vortex magnetic pump for conveying acidic materials according to claim 3, characterized in that: The corrosion-resistant layer (B) and the impeller (5) are both made of PEEK material.

5. The fluorine-lined vortex magnetic pump for conveying acidic materials according to claim 4, characterized in that: The right end of the pump shaft (10) is sleeved with a shaft cap (14) for fixing the inner magnetic rotor (12) to the right end of the pump shaft (10), and the inner magnetic rotor sealing cover (15) is installed on the mounting hole at the center of the right end face of the inner magnetic rotor (12).

6. The fluorine-lined vortex magnetic pump for conveying acidic materials according to claim 5, characterized in that: It also includes a base (17), the lower end of the pump body (6) has a support leg (6-3), and the pump body (6) is fixed to the base (17) by a bolt assembly that penetrates the mounting hole on the support leg (6-3) and the screw hole on the upper end surface of the base (17).

7. The fluorine-lined vortex magnetic pump for conveying acidic materials according to claim 6, characterized in that: The driving mechanism (19) is a motor.

8. The fluorine-lined vortex magnetic pump for conveying acidic materials according to any one of claims 1 to 7, characterized in that: One of the liquid inlet (6-1) and the liquid outlet (6-2) is located on the upper side of the pump body (6), and the other of the liquid inlet (6-1) and the liquid outlet (6-2) is located on the front side or the rear side of the pump body (6).

9. The fluorine-lined vortex magnetic pump for conveying acidic materials according to claim 8, characterized in that: The parameters of the fluorine-lined vortex magnetic pump are as follows: the diameter of the liquid inlet (6-1) is DN25-65, and the flow rate range is 0.5-8m 3 / h, the head range is 15~120m, the pressure level is 1.6MPa, the speed range is 1450~2900r / min, the power range is 0.55~22KW, and the operating temperature range is 40~180℃.

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