Magnetic drive pump with speed change gear mechanism

Abstract

The utility model belongs to the technical field of magnetic drive pumps, and particularly relates to a magnetic drive pump with a speed change gear mechanism, which comprises a magnetic drive pump, the outer end of the magnetic drive pump is fixedly connected with a liquid inlet pipe, the circumferential outer wall of the liquid inlet pipe is fixedly connected with a connecting flange, and the top of the connecting flange is provided with a plurality of mounting grooves. Rotating shafts are fixedly connected to the inner walls of the mounting grooves, connecting plates are rotatably connected to the outer walls of the circumferences of the rotating shafts, pressing plates are fixedly connected to one ends of the connecting plates, and elastic plates are fixedly connected to the other ends of the connecting plates. The limiting groove is formed in the inner wall of the liquid inlet pipe, the filter screen sleeve is arranged in the limiting groove in a sleeved mode, and the filter screen is fixed in the filter screen sleeve, so that the filter screen can be easily taken out of the liquid inlet pipe to be cleaned or replaced, the problem of unsmooth liquid inlet caused by the fact that the filter screen is blocked by impurities is effectively solved, the number of internal structures of the liquid inlet pipe is small, and the liquid inlet pipe is convenient to use. The influence on the efficiency of the magnetic drive pump due to the reduction of the flow speed of liquid in the liquid inlet pipe is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic pumps, and more specifically, to a magnetic pump with a variable speed gear mechanism. Background Art

[0002] The magnetic pump in the variable speed gear mechanism is usually also called a magnetic drive pump or a leak-free magnetic drive pump, which mainly refers to a magnetic pump that can control the rotation speed of the pump body by adjusting the variable speed gear. The magnetic pump itself is a pump that uses magnetic coupling to transmit power. It does not require a shaft seal, so the leakage problem is completely avoided, and it has the characteristics of safety, stability, and no pollution. The variable speed gear mechanism is the key part of the magnetic pump for adjusting the rotation speed of the pump body.

[0003] In the existing technology, as disclosed in the document with the publication number of CN221003153U, a clogging-proof magnetic pump is specifically disclosed. In this document, a clogging-proof mechanism is arranged inside the liquid inlet pipe. The clogging-proof mechanism includes a block, the inner wall of the liquid inlet pipe abuts against the block, the outer end of the block is fixedly connected with a connecting pipe, the upper side of the inner wall of the connecting pipe is fixedly connected with a fixed rod, the inner wall of the fixed rod is rotatably connected with a rotating rod, the upper end of the rotating rod is fixedly installed with a blade, the lower side of the outer end of the rotating rod is fixedly installed with a scraper, the lower side of the inner wall of the connecting pipe is fixedly installed with filter plates one, two, and three at equal intervals, the outer end of the scraper abuts against the surfaces of filter plates one, two, and three, and the filter holes of filter plates one, two, and three decrease from top to bottom in sequence; although the above structure can prevent the liquid inlet pipe of the magnetic pump from being clogged, installing more structures inside the liquid inlet pipe will cause the flow rate of the liquid inside the liquid inlet pipe to become smaller, resulting in a lower efficiency of the magnetic pump. For this reason, we propose a magnetic pump with a variable speed gear mechanism. Summary of the Utility Model

[0004] The utility model provides a magnetic pump with a variable speed gear mechanism, which can effectively prevent the problem of poor liquid inlet caused by impurities clogging the filter screen, and there are fewer structures inside the liquid inlet pipe, avoiding the reduction of the flow rate of the liquid inside the liquid inlet pipe and affecting the efficiency of the magnetic pump.

[0005] A magnetic pump with a variable speed gear mechanism proposed by the present utility model includes a magnetic pump. A liquid inlet pipe is fixedly connected to the outer end of the magnetic pump. A connecting flange is fixedly connected to the circumferential outer wall of the liquid inlet pipe. A plurality of mounting grooves are formed in the top of the connecting flange. A rotating shaft is fixedly connected to the inner wall of each mounting groove. A connecting plate is rotatably connected to the circumferential outer wall of each rotating shaft. A pressing plate is fixedly connected to one end of each connecting plate. An elastic plate is fixedly connected to the other end of each connecting plate. A pressing bead is fixedly connected to the outer wall of each elastic plate. A limiting groove is formed in the inner wall of the liquid inlet pipe. A filter sleeve is sleeved on the inner wall of the limiting groove. A filter screen is fixedly connected to the inner wall of the filter sleeve. An annular clamping groove is formed in the outer wall of the filter sleeve. The pressing bead is clamped and matched with the clamping groove.

[0006] Preferably, a groove is formed in the top of the connecting flange. A first sealing ring is fixedly connected to the inner wall of the groove. A sealing ring is sleeved on the inner wall of the groove. The groove is arranged outside the limiting groove.

[0007] Preferably, a plurality of flange holes are formed in the top of the connecting flange. A plurality of annular grooves are formed in the top of the connecting flange. The annular grooves are respectively arranged outside the flange holes.

[0008] Preferably, bolts are inserted into the plurality of flange holes. Nuts are fixedly connected to the ends of the bolts.

[0009] Preferably, a pressing groove is formed in the outer wall of the nut. A second sealing ring is embedded in the inner wall of the pressing groove. The second sealing ring is clamped and matched with the annular groove.

[0010] Preferably, a mounting seat is fixedly connected to the bottom of the magnetic pump. Mounting holes are formed at the four corners of the mounting seat.

[0011] The beneficial effects in the present utility model are as follows:

[0012] 1. In the present utility model, a limiting groove is provided in the inner wall of the liquid inlet pipe, and a filter sleeve is sleeved therein, and a filter screen is fixedly arranged inside the filter sleeve. This design enables the filter screen to be easily taken out from the liquid inlet pipe for cleaning or replacement, effectively preventing the problem of poor liquid inlet caused by blockage of the filter screen by impurities. Moreover, the internal structure of the liquid inlet pipe is relatively simple, avoiding the reduction of the liquid flow rate inside the liquid inlet pipe and affecting the efficiency of the magnetic pump.

[0013] 2. In the present utility model, the filter sleeve is pressed into the limiting groove. During installation, the bolts are respectively inserted into the corresponding flange holes. By screwing the nut onto the bolt and rotating the nut, the nut pushes the second sealing ring to move, so that the second sealing ring is stuck in the annular groove, thereby enabling the connection of the connecting flange to the external structure. Through the sealing of the second sealing ring, the flange holes can be sealed, avoiding rusting of the bolts and nuts.

[0014] 3. In the utility model, after installation, the connecting plate connected with the connecting flange squeezes multiple pressure plates at the same time. At this time, the pressure plate drives the connecting plate to rotate around the rotating shaft. At this time, the elastic plate drives the pressure beads to clamp the inner wall of the slot on the filter sleeve, so that the filter can be fixed and the firmness of the installation is improved.

[0015] 4. In the present invention, by installing the sealing ring and the first sealing ring inside the groove, the flange protrusion is pressed into the groove, and the sealing ring and the first sealing ring can improve the sealing performance of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a partial structural schematic diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the installation structure of the filter screen of the utility model;

[0019] Figure 4 This is a schematic diagram of the installation structure of the press bead of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the nut of the utility model.

[0021] In the figure: 1. mounting seat; 2. mounting hole; 3. magnetic pump; 4. liquid inlet pipe; 5. connecting flange; 6. limiting groove; 7. filter sleeve; 8. filter screen; 9. slot; 10. mounting groove; 11. rotating shaft; 12. connecting plate; 13. pressure plate; 14. elastic plate; 15. pressure bead; 16. groove; 17. sealing ring; 18. first sealing ring; 19. flange hole; 20. annular groove; 21. bolt; 22. nut; 23. pressure groove; 24. second sealing ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1-4As shown in the figure, a magnetic pump with a variable speed gear mechanism includes a magnetic pump 3, which can control the pump body speed by adjusting the variable speed gear. A liquid inlet pipe 4 is fixedly connected to the outer end of the magnetic pump 3. A connecting flange 5 is fixedly connected to the circumferential outer wall of the liquid inlet pipe 4. A plurality of mounting grooves 10 are formed in the top of the connecting flange 5. A rotating shaft 11 is fixedly connected to the inner wall of each mounting groove 10. A connecting plate 12 is rotatably connected to the circumferential outer wall of each rotating shaft 11. A pressing plate 13 is fixedly connected to one end of each connecting plate 12. An elastic plate 14 is fixedly connected to the other end of each connecting plate 12. A pressing bead 15 is fixedly connected to the outer wall of each elastic plate 14. A limiting groove 6 is formed in the inner wall of the liquid inlet pipe 4. A filter sleeve 7 is sleeved on the inner wall of the limiting groove 6. A filter screen 8 is fixedly connected to the inner wall of the filter sleeve 7. An annular clamping groove 9 is formed in the outer wall of the filter sleeve 7. The pressing bead 15 is in clamping fit with the clamping groove 9. By designing the mounting groove 10, rotating shaft 11, connecting plate 12, pressing plate 13, elastic plate 14 and pressing bead 15 on the connecting flange 5 and their clamping fit with the clamping groove 9 on the outer wall of the filter sleeve 7, the rapid installation and disassembly of the filter screen are realized. This design facilitates users to clean or replace the filter screen 8 regularly, ensures the efficient operation of the magnetic pump 3, and reduces the failures and maintenance costs caused by blockage.

[0024] As Figure 2 and Figure 3 shown, a groove 16 is formed in the top of the connecting flange 5. A first sealing ring 18 is fixedly connected to the inner wall of the groove 16. A sealing ring 17 is sleeved on the inner wall of the groove 16. The groove 16 is arranged outside the limiting groove 6. By arranging the first sealing ring 18 and the sealing ring 17 in the groove 16 of the connecting flange 5, the sealing performance between the pump body and the liquid inlet pipe 4 is further improved, medium leakage is prevented, and the overall operation stability and safety of the pump are improved.

[0025] As Figure 2 、 Figure 3 and Figure 5 shown, a plurality of flange holes 19 are formed in the top of the connecting flange 5. A plurality of annular grooves 20 are formed in the top of the connecting flange 5. The annular grooves 20 are respectively arranged outside the flange holes 19. Bolts 21 are inserted into the plurality of flange holes 19. Nuts 22 are fixedly connected to the ends of the bolts 21. A pressing groove 23 is formed in the outer wall of the nut 22. A second sealing ring 24 is embedded in the inner wall of the pressing groove 23. The second sealing ring 24 is in clamping fit with the annular groove 20. At the same time, the clamping fit between the second sealing ring 24 and the annular groove 20 provides additional sealing guarantee during the tightening process of the bolts 21 and the nuts 22, ensuring the sealing effect of the connection.

[0026] As Figure 1 shown, a mounting seat 1 is fixedly connected to the bottom of the magnetic pump 3. Mounting holes 2 are formed at the four corners of the mounting seat 1.

[0027] Working principle: Press the filter sleeve 7 into the limiting groove 6. During installation, insert multiple bolts 21 into the corresponding flange holes 19 respectively. Screw the nut 22 onto the bolt 21 and rotate the nut 22. The nut 22 pushes the second sealing ring 24 to move, so that the second sealing ring 24 is stuck in the annular groove 20. Thus, the connecting flange 5 can be connected to the external structure. The flange hole 19 can be sealed by the sealing of the second sealing ring 24 to prevent the bolts 21 and the bolts 21 from rusting.

[0028] After installation, the connecting plate connected to the connecting flange 5 squeezes the multiple pressing plates 13 at the same time. At this time, the pressing plates 13 drive the connecting plates 12 to rotate around the rotating shaft 11. At this time, the elastic plate 14 drives the pressing beads 15 to clamp the inner wall of the clamping groove 9 on the filter sleeve 7, so that the filter 8 can be fixed;

[0029] By installing the sealing ring 17 and the first sealing ring 18 inside the groove 16 , the flange protrusion is pressed into the groove 16 , and the sealing ring 17 and the first sealing ring 18 can improve the sealing performance of the connection.

[0030] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic pump with a speed-changing gear mechanism, comprising a magnetic pump (3), characterized in that: The outer end of the magnetic pump (3) is fixedly connected to a liquid inlet pipe (4), the circumferential outer wall of the liquid inlet pipe (4) is fixedly connected to a connecting flange (5), a plurality of mounting grooves (10) are provided on the top of the connecting flange (5), the inner walls of the mounting grooves (10) are fixedly connected to a rotating shaft (11), the circumferential outer wall of the rotating shaft (11) is rotatably connected to a connecting plate (12), one end of the connecting plate (12) is fixedly connected to a pressing plate (13), the other end of the connecting plate (12) is fixedly connected to an elastic plate (14), the outer wall of the elastic plate (14) is fixedly connected to a pressing bead (15), the inner wall of the liquid inlet pipe (4) is provided with a limiting groove (6), the inner wall of the limiting groove (6) is sleeved with a filter screen sleeve (7), the inner wall of the filter screen sleeve (7) is fixedly connected to a filter screen (8), the outer wall of the filter screen sleeve (7) is provided with an annular clamping groove (9), and the pressing bead (15) is clamped and matched with the clamping groove (9).

2. The magnetic pump with a speed-changing gear mechanism according to claim 1, characterized in that: A groove (16) is provided at the top of the connecting flange (5), a first sealing ring (18) is fixedly connected to the inner wall of the groove (16), a sealing ring (17) is sleeved on the inner wall of the groove (16), and the groove (16) is arranged outside the limiting groove (6).

3. The magnetic pump with a speed-changing gear mechanism according to claim 2, characterized in that: A plurality of flange holes (19) are formed on the top of the connecting flange (5), and a plurality of annular grooves (20) are formed on the top of the connecting flange (5), wherein the annular grooves (20) are respectively arranged outside the flange holes (19).

4. The magnetic pump with a speed-changing gear mechanism according to claim 3, characterized in that: Bolts (21) are inserted into each of the plurality of flange holes (19), and the ends of the bolts (21) are fixedly connected to nuts (22).

5. The magnetic pump with a speed-changing gear mechanism according to claim 4, characterized in that: The outer wall of the nut (22) is provided with a pressing groove (23), the inner wall of the pressing groove (23) is embedded with a second sealing ring (24), and the second sealing ring (24) is snap-fitted with the annular groove (20).

6. The magnetic pump with a speed-changing gear mechanism according to claim 5, characterized in that: The bottom of the magnetic pump (3) is fixedly connected to a mounting seat (1), and mounting holes (2) are provided at four corners of the mounting seat (1).

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