A magnetic pump

Abstract

The present invention relates to the technical field of magnetic pumps, and particularly to a magnetic pump, which includes a magnetic pump body and a mounting base. The magnetic pump body is mounted on the mounting base by bolts. L-shaped grooves are provided on the outer walls of the four sides of the mounting base, and the bottom ends of the L-shaped grooves penetrate through the bottom of the mounting base. A cylinder is inserted into the inner side of one of the L-shaped grooves. A fixed frame is fixedly connected through the bottom end of the outer wall of the bottom end of the cylinder. A U-shaped plate is slidably connected inside the fixed frame. A winding rod is rotatably connected inside the cylinder. Through the setting of the above structure, the present invention can not only quickly install the cylinder at the sinking position according to the horizontal inclination condition of the mounting base, and prop up the sinking position through simple operations to ensure that the pump body always maintains a horizontal state, without the need for additional padding or complex tools, reducing the installation difficulty. At the same time, the overall design of the horizontal adjustment mechanism is compact and has a small volume, and can be quickly installed and adjusted in an environment with limited space, meeting the use requirements of complex sites.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic pumps, and in particular, to a magnetic pump. Background Art

[0002] A magnetic pump is a new type of seal-less pump that applies the principle of permanent magnet drive technology to achieve contactless torque transmission. There is no mechanical connection between the driving shaft and the driven shaft, and there is no need for dynamic seals in the structure. Therefore, this type of pump is seal-less and can achieve zero leakage, and is particularly suitable for transporting flammable, explosive, volatile, toxic, corrosive, and precious liquids. Magnetic pumps are mostly used in occasions where the pump is required to have only minimal leakage or even no leakage, as well as in high-vacuum situations where mechanical seals are difficult to perform well.

[0003] In the prior art, for the outdoor corrosion-resistant fluorine-lined magnetic pump with the publication number of CN118066150B, when installing the fluorine-lined magnetic pump, it is placed on the installation base plate and positioned through the positioning angle bracket, and then by rotating the threaded drive column, the fixed connecting block can be driven to be inserted into the fixed slideway to realize the fixed installation of the fluorine-lined magnetic pump. The operation is simple and convenient, and the convenient installation of the fluorine-lined magnetic pump can be realized. Moreover, with the movement of the fixed connecting block, the installation height of the fluorine-lined magnetic pump can be adjusted, killing two birds with one stone and having strong practicability.

[0004] Although the above device can quickly install the magnetic pump, there are still some defects in the actual installation process. Since the overall volume of the installation mechanism on this magnetic pump is relatively large, when installing in some narrow or complex installation environments, this magnetic pump cannot be well applied. Especially when the position or height needs to be frequently adjusted, it is difficult to operate in a narrow space, and it is impossible to quickly adjust the level of the magnetic pump, greatly reducing the flexibility and installation efficiency of the device.

[0005] Therefore, a magnetic pump is proposed to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a magnetic pump to solve the drawbacks existing in the background art.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows: a magnetic pump, including a magnetic pump body and a mounting base, the magnetic pump body is mounted on the mounting base by bolts, L-shaped grooves are opened on the four sides of the outer wall of the mounting base, and the bottom ends of the L-shaped grooves penetrate through the bottom of the mounting base. A cylinder is inserted into the inner side of one of the L-shaped grooves. A fixed frame is fixedly connected to the bottom end of the outer wall of the cylinder. A U-shaped plate is slidably connected to the inner side of the fixed frame. A winding rod is rotatably connected to the inner side of the cylinder. A pulling rope is wound around the outer wall of the winding rod, and one end of the pulling rope is fixedly connected to the outer wall of the winding rod. An upper plate is fixedly connected to the top end of the inner side of the U-shaped plate. A pair of fixed seats are fixedly connected to the bottom end of the inner side of the fixed frame. A guide roller is rotatably connected between the fixed seats. The other side of the pulling rope passes under the guide roller and is fixedly connected to the bottom end of the upper plate. An adjusting mechanism for rotating the winding rod is provided on the cylinder, and a limiting mechanism for restricting its position is provided on the cylinder.

[0008] In the above technical solution, further, the adjusting mechanism includes an adjusting block fixedly connected to the side end of the winding rod. A pair of return springs are fixedly connected between the top end of the U-shaped plate and the inner side of the fixed frame. A plurality of upper right-angle blocks with inclined surfaces are fixedly connected to the inner side of the cylinder at equal intervals. A sliding frame is fixedly connected to the outer wall of the winding rod. A release frame is slidably connected horizontally inside the sliding frame. A T-shaped plate is slidably connected vertically inside the release frame, and the top end of the T-shaped plate is inclined near the inclined surface of the upper right-angle block.

[0009] In the above technical solution, further, an upper spring is fixedly connected between the inner side of the sliding frame and the side wall of the release frame. A lower spring is fixedly connected between the inner side of the release frame and the bottom end of the T-shaped plate. A push rod is fixedly connected to the side wall of the release frame, and the side wall of the push rod penetrates through the side wall of the adjusting block. The side end of the push rod is set as a smooth arc surface.

[0010] In the above technical solution, further, a volute spring is provided on the outer wall of the winding rod. One end of the volute spring is fixedly connected to the outer wall of the winding rod, and the other end of the volute spring is fixedly connected to the inner wall of the cylinder.

[0011] In the above technical solution, further, the limiting mechanism includes a limiting rod. A limiting frame is fixedly connected to the bottom end of the outer wall of the cylinder. A through groove is opened on the side wall of the limiting frame. A limiting plate is slidably connected inside the through groove. The limiting rod is fixedly connected to the side wall of the limiting plate. A circular push cylinder is slidably connected to the inner side of the cylinder. A pair of push blocks are fixedly connected to the outer wall of the circular push cylinder, and the push blocks penetrate through the outer wall of the cylinder. A plurality of limiting grooves are opened at equal intervals in the L-shaped groove at a position beside the limiting rod.

[0012] In the above technical solution, further, a moving groove is provided in the outer wall of the cylinder at a position beside the push block. A pair of limiting springs are fixedly connected between the inner side of the through groove and the side wall of the limiting plate, and the side end of the limiting rod is provided with a smooth arc surface.

[0013] In the above technical solution, further, a hexagonal block is fixedly connected to the side wall of the adjusting block, and the push rod passes through the side wall of the hexagonal block. A wrench is provided beside the hexagonal block, and a polygonal groove adapted to the hexagonal block is provided on the side wall of the wrench.

[0014] In the above technical solution, further, an extended frame is fixedly connected to the side wall of the wrench. A lower right-angle block with an inclined surface is provided in front of the wrench. A push rod is slidably connected inside the extended frame. The side wall of the push rod is fixedly connected to the side wall of the lower right-angle block. An unlocking spring is fixedly connected between the inner side of the extended frame and the side wall of the push rod. A push plate is fixedly connected to the side wall of the push rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Through the arrangement of structures such as the cylinder, U-shaped plate, L-shaped groove, and pull rope, the present invention can not only quickly install the cylinder at the sinking position according to the horizontal inclination of the installation base, and lift the sinking position through simple operations to ensure that the pump body always remains in a horizontal state without additional padding or complex tools, reducing the installation difficulty. At the same time, the overall design of the horizontal adjustment mechanism is compact and small in size, and can be quickly installed and adjusted in an environment with limited space, meeting the use requirements of complex sites.

[0017] 2. Through the arrangement of structures such as the wrench, hexagonal block, and lower right-angle block, the combination of the cylinder and the adjusting block with the use of the wrench and the extended frame in the present invention realizes the quick horizontal adjustment of the magnetic pump in a narrow space or a blocked environment, while taking into account the characteristics of small size and convenient operation, significantly improving the efficiency and reliability of installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front three-dimensional structural diagram of the magnetic pump of the present invention;

[0019] Figure 2 is a bottom three-dimensional structural diagram of the magnetic pump of the present invention;

[0020] Figure 3 is an enlarged partial structural diagram at Figure 2 position A in the present invention;

[0021] Figure 4 is a three-dimensional structural diagram when the adjusting block and the extended frame of the present invention are separated;

[0022] Figure 5Schematic perspective view of the partial side full section of the mounting base of the present invention;

[0023] Figure 6 Schematic perspective view of the partial external structure of the adjusting block and the winding rod of the present invention;

[0024] Figure 7 Schematic perspective view of the partial side full section of the cylinder and the fixing frame of the present invention;

[0025] Figure 8 For the attachment of the present invention Figure 7 Schematic diagram of the partial enlarged structure at position B in

[0026] Figure 9 Schematic perspective view of the overall external structure of the circular push cylinder and the limiting plate of the present invention.

[0027] In the figure: 1, magnetic pump body; 2, mounting base; 3, L-shaped groove; 4, cylinder; 5, fixing frame; 6, U-shaped plate; 7, winding rod; 8, pull rope; 9, upper plate; 10, fixing seat; 11, guide roller; 12, adjusting block; 13, return spring; 14, volute spring; 15, upper right-angle block; 16, sliding frame; 17, release frame; 18, T-shaped plate; 19, upper spring; 20, lower spring; 21, push rod; 22, limiting rod; 23, limiting frame; 24, limiting plate; 25, circular push cylinder; 26, push block; 27, limiting spring; 28, limiting groove; 29, wrench; 30, polygonal groove; 31, extension frame; 32, lower right-angle block; 33, push rod; 34, unlocking spring; 35, push plate; 36, hexagonal block. Detailed implementation manners

[0028] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0029] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed below.

[0030] Such as Figures 1-9A magnetic pump shown includes a magnetic pump body 1 and a mounting base 2. The magnetic pump body 1 is mounted on the mounting base 2 by bolts. L-shaped grooves 3 are provided on the four sides of the outer wall of the mounting base 2. Here, it should be noted that the bottoms of the L-shaped grooves 3 are connected through, but the outer sides are not connected, ensuring the normal fixation of the mounting base 2. And the bottom ends of the L-shaped grooves 3 penetrate through the bottom of the mounting base 2. A cylinder 4 is inserted into the inner side of one of the L-shaped grooves 3. The bottom end of the outer wall of the cylinder 4 is fixedly connected with a fixed frame 5. A U-shaped plate 6 is slidably connected inside the fixed frame 5. A winding rod 7 is rotatably connected inside the cylinder 4. A pull rope 8 is wound around the outer wall of the winding rod 7. And one end of the pull rope 8 is fixedly connected to the outer wall of the winding rod 7. The inner top end of the U-shaped plate 6 is fixedly connected with an upper plate 9. A pair of fixed seats 10 are fixedly connected to the inner bottom end of the fixed frame 5. A guide roller 11 is rotatably connected between the fixed seats 10 to guide the sliding of the pull rope 8. The other side of the pull rope 8 passes through below the guide roller 11 and is fixedly connected to the bottom end of the upper plate 9. An adjusting mechanism for rotating the winding rod 7 is provided on the cylinder 4, and a limiting mechanism for restricting its position is provided on the cylinder 4;

[0031] The adjusting mechanism includes an adjusting block 12 fixedly connected to the side end of the winding rod 7. A pair of return springs 13 are fixedly connected between the top end of the U-shaped plate 6 and the inner side of the fixed frame 5. A plurality of upper right-angle blocks 15 with inclined surfaces are fixedly connected at equal intervals inside the cylinder 4. A sliding frame 16 is fixedly connected to the outer wall of the winding rod 7. An unlocking frame 17 is horizontally slidably connected inside the sliding frame 16. A T-shaped plate 18 is longitudinally slidably connected inside the unlocking frame 17. And the top end of the T-shaped plate 18 is inclined near the inclined surface of the upper right-angle block 15;

[0032] A upper spring 19 is fixedly connected between the inner side of the sliding frame 16 and the side wall of the unlocking frame 17. A lower spring 20 is fixedly connected between the inner side of the unlocking frame 17 and the bottom end of the T-shaped plate 18. A push rod 21 is fixedly connected to the side wall of the unlocking frame 17. And the side wall of the push rod 21 penetrates through the side wall of the adjusting block 12. A volute spring 14 is provided on the outer wall of the winding rod 7. One end of the volute spring 14 is fixedly connected to the outer wall of the winding rod 7, and the other end of the volute spring 14 is fixedly connected to the inner wall of the cylinder 4. Through the setting of the volute spring 14, it is convenient to drive the winding rod 7 to rotate and reset after the limit is released, and then wind the pull rope 8 back;

[0033] During the installation of the magnetic pump, first place the installation base 2 at the installation position, and then use a level to detect whether the installation base 2 is in a horizontal state. If it is tilted, the fixed frame 5 on the cylinder 4 can be inserted into the L-shaped groove 3 at the sunken position. After completion of the insertion, the cylinder 4 can be rotated to drive the fixed frame 5 to turn downward. Subsequently, when the fixed frame 5 is in a vertical state, the position of the fixed frame 5 can be restricted by the limiting mechanism. Then, rotate the adjusting block 12 to drive the winding rod 7 to rotate. Since one end of the pulling rope 8 is fixedly connected to the winding rod 7, the pulling rope 8 will be gradually wound. And since one end of the scroll spring 14 is fixed to the winding rod 7 and the other end is fixed to the inner side of the cylinder 4, when the winding rod 7 rotates, the scroll spring 14 will be gradually compressed. Thus, the pulling rope 8 is wound by the winding rod 7, and under the pulling of the pulling rope 8 and the guiding of the guide roller 11, the upper plate 9 and the U-shaped plate 6 will be gradually pulled downward, and at the same time, the return spring 13 will be gradually stretched, so as to support the sunken position of the installation base 2 and achieve rapid adjustment of the level of the installation base 2;

[0034] During this process, when the winding rod 7 rotates, it will drive the sliding frame 16, the release frame 17 and the T-shaped plate 18 to rotate. At this time, the inclined surface of the upper right-angle block 15 will squeeze the arc surface of the T-shaped plate 18, and then gradually squeeze the T-shaped plate 18 to slide in the release frame 17 and compress the lower spring 20. Subsequently, when the T-shaped plate 18 slides out of the inclined surface of the upper right-angle block 15, the extrusion of the T-shaped plate 18 will be released, and then the T-shaped plate 18 will be pushed to reset under the elastic force of the lower spring 20, so as to clamp the T-shaped plate 18 on the vertical surface of the upper right-angle block 15, thereby restricting the reverse rotation of the winding rod 7 to drive the T-shaped plate 18 to reset, ensuring the stability after the position adjustment of the U-shaped plate 6. At the same time, the overall volume of the cylinder 4 and the fixed frame 5 is small, and only the cylinder 4 and the adjusting block 12 are in the extended state. Therefore, in an environment with limited space, the level of the installation base 2 can be quickly adjusted to meet the use requirements of complex sites. If there is still inclination elsewhere at this time, a fixed frame 5 can be inserted into the L-shaped groove 3 at the inclined position, and the above operations can be repeated to carry out support adjustment. Finally, after the level adjustment of the installation base 2 is completed, the installation base 2 can be fixed at the installation position through expansion bolts, and then the magnetic pump body 1 can be fixed on the installation base 2 through bolts.

[0035] In order to improve the stability during the level adjustment of the installation base 2, the limiting mechanism includes a limiting rod 22. The bottom end of the outer wall of the cylinder 4 is fixedly connected through a through hole with a limiting frame 23. A through groove is provided on the side wall of the limiting frame 23, and a limiting plate 24 is slidably connected inside the through groove. The limiting rod 22 is fixedly connected to the side wall of the limiting plate 24. A circular push cylinder 25 is slidably connected inside the cylinder 4. A pair of push blocks 26 are fixedly connected to the outer wall of the circular push cylinder 25, and the push blocks 26 penetrate through the outer wall of the cylinder 4. A plurality of limiting grooves 28 are equidistantly provided at positions beside the limiting rod 22 inside the L-shaped groove 3;

[0036] A moving groove is provided on the outer wall of the cylinder 4 at a position beside the push block 26, which avoids hindering the normal sliding of the push block 26 through the moving groove. A pair of limiting springs 27 are fixedly connected between the inner side of the through groove and the side wall of the limiting plate 24. Through the arrangement of the limiting springs 27, when the limiting rod 22 is relieved of extrusion, it is convenient to quickly push the limiting rod 22 into the limiting groove 28. The side end of the limiting rod 22 is set as a smooth arc surface, which is convenient for the inner side of the L-shaped groove 3 to more smoothly extrude the limiting rod 22 into the through groove;

[0037] After the fixed frame 5 is inserted into the L-shaped groove 3, during the process of flipping the fixed frame 5, the inner wall of the L-shaped groove 3 will squeeze the arc surface of the limiting rod 22, and then squeeze the limiting rod 22 and the limiting plate 24 into the through groove, and compress the limiting spring 27. Subsequently, when the fixed frame 5 is flipped 90 degrees to a vertical state, at this time the limiting rod 22 moves to a position beside the corresponding limiting groove 28, thereby relieving the extrusion of the limiting rod 22. Then, under the elastic force of the limiting spring 27, the limiting rod 22 is pushed into the corresponding limiting groove 28, thereby playing a role in limiting the sliding position of the fixed frame 5 and the cylinder 4, avoiding the random movement of the fixed frame 5 during the adjustment process and affecting the stability during the horizontal adjustment process. When the position of the fixed frame 5 is restricted, if it is found that there is a deviation from the sinking position point of the mounting base 2 or the fixed frame 5 needs to be taken out, the two push blocks 26 can be pushed to drive the circular push cylinder 25 and the limiting plate 24 to move, thereby pushing the limiting rod 22 out of the limiting groove 28, thus relieving the restriction on the fixed frame 5. Subsequently, the fixed frame 5 can be pushed to move, or the fixed frame 5 can be flipped out.

[0038] In order to enable quick horizontal adjustment in a narrow space or a blocked environment, a hexagonal block 36 is fixedly connected to the side wall of the adjusting block 12, and the push rod 21 passes through the side wall of the hexagonal block 36. A wrench 29 is provided beside the hexagonal block 36, and a polygonal groove 30 adapted to the hexagonal block 36 is provided on the side wall of the wrench 29;

[0039] A lengthened frame 31 is fixedly connected to the side wall of the wrench 29. A lower right-angle block 32 with an inclined surface is provided in front of the wrench 29. The side end of the push rod 21 is set as a smooth arc surface, which is convenient for the inclined surface of the lower right-angle block 32 to more smoothly squeeze the push rod 21 to slide. A push rod 33 is slidably connected inside the lengthened frame 31. The side wall of the push rod 33 is fixedly connected to the side wall of the lower right-angle block 32. An unlocking spring 34 is fixedly connected between the inner side of the lengthened frame 31 and the side wall of the push rod 33. Through the arrangement of the unlocking spring 34, it is convenient to quickly reset the pull rod 33 and the lower right-angle block 32. A push plate 35 is fixedly connected to the side wall of the push rod 33. Through the arrangement of the push plate 35, it is convenient to push the push rod 33 to move;

[0040] When the sinking position of the mounting base 2 is in a narrow space or a blocked environment, the extension frame 31 can be used. Insert the polygonal groove 30 on the wrench 29 onto the hexagonal block 36, and then flip the extension frame 31 upwards to drive the adjusting block 12 to rotate upwards. When the extension frame 31 is flipped to the other side, remove the wrench 29 and re-insert it onto the hexagonal block 36 for flipping. Repeat this process to achieve rapid adjustment of the level of the mounting base 2 in a narrow space or a blocked environment. Moreover, the extension frame 31 can be used as an extended lever, making the adjustment process of rotating the adjusting block 12 more labor-saving and further improving the convenience performance of the device.

[0041] During the process of rotating the adjusting block 12 to adjust the level of the mounting base 2, if the rotating force of the adjusting block 12 is too large and the supporting height of the sinking position is too high, the push plate 35 can be pushed to drive the push rod 33 and the lower right-angle block 32 to move, and gradually stretch the unlocking spring 34. Then, the inclined surface of the lower right-angle block 32 gradually squeezes the push rod 21 to slide, causing the push rod 21 to slide into the cylinder 4. At the same time, the push rod 21 will drive the release frame 17 to slide inside the sliding frame 16 and gradually compress the upper spring 19, thereby driving the T-shaped plate 18 to move out from beside the upper right-angle block 15, thus releasing the rotation restriction on the winding rod 7. Then, the extension frame 31 can be gradually released, and the winding rod 7 will rotate and reset under the elastic force of the scroll spring 14. After the adjustment of the phenomenon that the supporting point of the sinking position is too high is completed, the push plate 35 can be released, thereby releasing the extrusion on the push rod 21. Then, under the elastic force of the upper spring 19 and the unlocking spring 34, it will be pushed to reset, and the T-shaped plate 18 will be driven to be stuck beside the vertical surface of the upper right-angle block 15 to limit the reverse rotation of the winding rod 7, thus completing the adjustment. This not only ensures that it can be reset in case of over-adjustment, but also can be reset when using the extension frame 31, improving the flexibility performance of the device.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention.

[0043] Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A magnetic pump, comprising a magnetic pump body (1) and a mounting base (2), wherein the magnetic pump body (1) is mounted on the mounting base (2) by bolts, and is characterized in that: The outer walls of the four sides of the installation base (2) are each provided with an L-shaped groove (3), and the bottom end of the L-shaped groove (3) runs through the bottom of the installation base (2). A cylinder (4) is inserted into the inner side of one of the L-shaped grooves (3). The bottom end of the outer wall of the cylinder (4) is fixedly connected with a fixed frame (5) through. A U-shaped plate (6) is slidably connected inside the fixed frame (5). A winding rod (7) is rotatably connected inside the cylinder (4). A pulling rope (8) is wound around the outer wall of the winding rod (7), and one end of the pulling rope (8) is fixedly connected to the outer wall of the winding rod (7). The inner top end of the U-shaped plate (6) is fixedly connected with an upper plate (9). A pair of fixed seats (10) are fixedly connected to the inner bottom end of the fixed frame (5). A guide roller (11) is rotatably connected between the fixed seats (10). The other side of the pulling rope (8) passes under the guide roller (11) and is fixedly connected to the bottom end of the upper plate (9). An adjusting mechanism for rotating the winding rod (7) is provided on the cylinder (4), and a limiting mechanism for restricting its position is provided on the cylinder (4); The adjusting mechanism includes an adjusting block (12). The adjusting block (12) is fixedly connected to the side end of the winding rod (7). A pair of return springs (13) are fixedly connected between the top end of the U-shaped plate (6) and the inner side of the fixed frame (5). A plurality of upper right-angle blocks (15) with inclined surfaces are fixedly connected to the inner side of the cylinder (4) at equal intervals. A sliding frame (16) is fixedly connected to the outer wall of the winding rod (7). A release frame (17) is slidably connected horizontally inside the sliding frame (16). A T-shaped plate (18) is slidably connected vertically inside the release frame (17), and the top end of the T-shaped plate (18) is inclined toward the inclined surface of the upper right-angle block (15); An upper spring (19) is fixedly connected between the inner side of the sliding frame (16) and the side wall of the release frame (17). A lower spring (20) is fixedly connected between the inner side of the release frame (17) and the bottom end of the T-shaped plate (18). A push rod (21) is fixedly connected to the side wall of the release frame (17), and the side wall of the push rod (21) runs through the side wall of the adjusting block (12). The side end of the push rod (21) is set as a smooth arc surface; A hexagonal block (36) is fixedly connected to the side wall of the adjusting block (12), and the push rod (21) runs through the side wall of the hexagonal block (36). A wrench (29) is provided beside the hexagonal block (36), and a polygonal groove (30) adapted to the hexagonal block (36) is provided on the side wall of the wrench (29).

2. The magnetic pump according to claim 1, characterized in that: A scroll spring (14) is provided on the outer wall of the winding rod (7). One end of the scroll spring (14) is fixedly connected to the outer wall of the winding rod (7), and the other end of the scroll spring (14) is fixedly connected to the inner wall of the cylinder (4).

3. A magnetic pump according to claim 1, characterized in that: The limiting mechanism includes a limiting rod (22). The bottom end of the outer wall of the cylinder (4) is fixedly connected through and provided with a limiting frame (23). A through groove is formed in the side wall of the limiting frame (23). A limiting plate (24) is slidably connected inside the through groove. The limiting rod (22) is fixedly connected to the side wall of the limiting plate (24). A circular push cylinder (25) is slidably connected inside the cylinder (4). A pair of push blocks (26) are fixedly connected to the outer wall of the circular push cylinder (25), and the push blocks (26) penetrate through the outer wall of the cylinder (4). A plurality of limiting grooves (28) are equidistantly formed in the L-shaped groove (3) at positions beside the limiting rod (22).

4. A magnetic pump according to claim 3, characterized in that: A moving groove is formed in the outer wall of the cylinder (4) at a position beside the push block (26). A pair of limiting springs (27) are fixedly connected between the inside of the through groove and the side wall of the limiting plate (24), and the side end of the limiting rod (22) is provided with a smooth arc surface.

5. A magnetic pump according to claim 1, characterized in that: A lengthening frame (31) is fixedly connected to the side wall of the wrench (29). A lower right-angle block (32) with an inclined surface is arranged in front of the wrench (29). A push rod (33) is slidably connected inside the lengthening frame (31). The side wall of the push rod (33) is fixedly connected to the side wall of the lower right-angle block (32). An unlocking spring (34) is fixedly connected between the inside of the lengthening frame (31) and the side wall of the push rod (33). A push plate (35) is fixedly connected to the side wall of the push rod (33).

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