Energy-saving pump sealing device

Abstract

The present invention discloses an energy-saving pump sealing device, which relates to the field of mechanical sealing technology. The present invention includes a housing; an impeller assembly for pumping water is provided inside the housing, the impeller assembly includes a pump shaft, a sealing assembly is rotatably connected to a side surface of the housing, the sealing assembly includes a shaft sleeve rotatably connected to the housing, one end of the shaft sleeve is fixedly connected to a disc, and the disc is fixedly connected to the pump shaft. The present invention generates an induced current by the reciprocating movement of a magnetic rod inside a coil, thereby providing electrical energy for the electromagnet to generate an adsorption force, thereby driving the second annular magnet to move toward the static ring, thereby compressing the first spring, thereby increasing the elastic potential energy of the first spring, and further making the static ring and the dynamic ring fit tightly together through the Z-shaped annular pressure plate and the Z-shaped annular sealing gasket, thereby avoiding the weakening of the elastic potential energy of the first spring and affecting the fit between the static ring and the dynamic ring, effectively improving the sealing and service life of the energy-saving pump.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical seals, and in particular relates to an energy-saving pump sealing device. Background Art

[0002] Centrifugal pumps are commonly used in fluid conveying equipment, particularly on ships. High-pressure centrifugal pumps are often used to increase output flow and pressure. Consequently, the water pressure within the pump body is relatively high. High water pressure in the pump body places even higher demands on the pump body's sealing to minimize leakage. Because the centrifugal impeller within the pump body is driven by a rotating shaft, which is connected to the pump body in a rotating manner, rotary sealing at the connection between the shaft and the pump body is crucial.

[0003] Currently, centrifugal pumps are generally sealed using mechanical seals. A mechanical seal is a device that prevents fluid leakage by maintaining contact and relative sliding between at least a pair of end faces perpendicular to the axis of rotation under the influence of fluid pressure and the elastic force of a compensating mechanism, in conjunction with an auxiliary seal. The dynamic ring is fixedly mounted on the rotating shaft and rotates with it, while the static ring is mounted on the pump casing. The static ring is compensated by the elastic force of a spring, ensuring that it always adheres to the dynamic ring, thus achieving a mechanical seal. However, over time, the spring deforms, resulting in insufficient spring force, which in turn affects the spring's ability to compensate for the static ring's force, preventing the static ring from fitting tightly against the dynamic ring. This can lead to leakage in centrifugal pumps. Summary of the Invention

[0004] The object of the present invention is to provide an energy-saving pump sealing device, which generates an induced current by the reciprocating movement of the magnetic rod inside the coil, thereby providing electrical energy for the electromagnet to generate an adsorption force, and then drives the second annular magnet to move toward the static ring, thereby compressing the first spring, thereby increasing the elastic potential energy of the first spring, and further through the Z-shaped annular pressure plate and the Z-shaped annular sealing gasket, the static ring and the dynamic ring are closely fitted, thereby avoiding the weakening of the elastic potential energy of the first spring and affecting the fit between the static ring and the dynamic ring, effectively improving the sealing and service life of the energy-saving pump, and solving the problem in the existing mechanical seals that the spring deforms under long-term use, resulting in insufficient spring elastic force, thereby affecting the compensation of the spring elastic force to the static ring, so that the static ring cannot be closely fitted with the dynamic ring, thereby causing the centrifugal pump to be prone to leakage.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: the present invention is an energy-saving pump sealing device, comprising a housing; an impeller assembly for pumping water is arranged inside the housing, the impeller assembly comprises a pump shaft, a side surface of the housing passes through and is rotatably connected to a sealing assembly, the sealing assembly comprises a shaft sleeve rotatably connected to the housing, one end of the shaft sleeve is fixedly connected to a disc, and the disc is fixedly connected to the pump shaft; the sealing assembly also comprises a first sealing ring fixedly connected to the inner wall of the housing, the inner wall of the first sealing ring is fixedly connected to a U-shaped annular support plate, an inner side surface of the U-shaped annular support plate is fixedly connected to a first annular magnet, the inner wall of the U-shaped annular support plate is fixedly connected to a Z-shaped annular sealing gasket, the inner wall of the U-shaped annular support plate is slidably fitted with a second annular magnet, and the outer wall cover of the Z-shaped annular sealing gasket is provided with a Z-shaped annular The U-shaped ring support plate is fixedly connected to the Z-shaped ring pressure plate and the second ring magnet, and the U-shaped ring support plate is fixedly connected to the Z-shaped ring sealing gasket, and the outer wall of the sleeve is fixedly connected to the dynamic ring that is in rotation with the static ring, and the inner top of the U-shaped ring support plate is fixedly connected to an electromagnet covered on each first spring; one side of the second ring magnet is evenly fixedly connected to a number of sliding rods that pass through the first ring magnet and the U-shaped ring support plate, and the outer wall of the sliding rod is slidingly connected with a magnetic rod, and the outer wall of the sliding rod is fixedly connected to a circular plate that is slidably mounted on the magnetic rod, and the end of the sliding rod is fixedly connected to a baffle, and a second spring mounted on the magnetic rod is fixedly connected between the baffle and the circular plate, and the circular plate is fixedly connected to a coil covered on the magnetic rod, and one side of the disk is evenly fixedly connected to an inclined block that contacts the magnetic rod.

[0006] Furthermore, the impeller assembly also includes a cylindrical tube fixedly connected to the end of the pump shaft, and a plurality of annular plates are evenly rotated on the outer circumferential side of the cylindrical tube, and a plurality of blades are fixedly connected to the outer circumferential side of the annular plate, and a first magnet block is symmetrically fixedly embedded on the inner circumferential side of the annular plate, and lock holes are symmetrically opened on the inner circumferential side of the annular plate.

[0007] Furthermore, the outer circumferential side surface of the cylindrical tube is evenly provided with a first annular groove which is rotatably engaged with a plurality of annular plates, and a locking rod which is symmetrically and slidingly connected to the lock hole is symmetrically passed through the inside of the first annular groove, and the circumferential side surface of the locking rod is fixedly connected with a limit plate located inside the cylindrical tube, and a first return spring which is sleeved on the locking rod is fixedly connected between the limit plate and the cylindrical tube.

[0008] Furthermore, a threaded rod is threadedly connected to the inner circumferential side of the cylindrical tube, one end of the threaded rod is fixedly connected to a push rod that contacts the locking rod, and the inner wall of the cylindrical tube is provided with a thread that matches the thread of the threaded rod.

[0009] Furthermore, the other end of the threaded rod is fixedly connected to a sealing plate, one side of the sealing plate is fixedly connected to an annular sealing protrusion, and one side of the cylindrical tube is provided with an annular sealing groove rotatably matched with the annular sealing protrusion.

[0010] Furthermore, a second annular groove is provided on the circumferential side of the support rod, an annular sleeve is rotatably connected inside the second annular groove, a slide plate that slides with the cylindrical tube is symmetrically fixedly connected to the inner wall of the annular sleeve, and a guide groove that slides with the slide plate is symmetrically provided on the inner circumferential side of the cylindrical tube.

[0011] Furthermore, the outer circumferential side of the cylindrical tube is symmetrically fixed with second magnet blocks respectively distributed outside the first annular groove. The first magnet block and the second magnet block are magnetically attracted to each other, and the first annular magnet and the second annular magnet are magnetically repelled from each other.

[0012] Furthermore, the ends of several locking rods located inside the cylindrical tube are provided with oblique openings that cooperate with the push rods and are arranged in the same direction. A water inlet is provided on one side of the shell, and a water outlet pipe is provided through the outer wall of the shell.

[0013] The present invention has the following beneficial effects: 1. The present invention connects the end of the sleeve to the output shaft of the external motor, and then controls the external motor to drive the sleeve to rotate, thereby driving the dynamic ring and the disc to rotate, and then driving the several inclined blocks on the disc to rotate. As the first spring is used for a long time, the elastic force of the first spring itself becomes smaller. Under the action of the opposite repulsion between the first annular magnet and the second annular magnet, the second annular magnet and the first spring move toward the direction of the static ring, thereby driving the sliding rod and the magnetic rod to move toward the static ring through the second annular magnet. At this time, the magnetic rod collides with the rotating inclined block. At the same time, the inclined block is driven to rotate through the disc. The inclined block is made to contact the magnetic rod and move away from the inclined block. When the inclined block rotates until it is no longer in contact with the magnetic rod, the magnetic rod is driven to reset under the action of the elastic force of the second spring. The reciprocating movement of the magnetic rod inside the coil generates an induced current, which in turn provides electrical energy for the electromagnet to generate an adsorption force, thereby driving the second annular magnet to move toward the static ring, thereby compressing the first spring, thereby increasing the elastic potential energy of the first spring, and further making the static ring and the dynamic ring fit closely through the Z-shaped annular pressure plate and the Z-shaped annular sealing gasket, thereby avoiding the weakening of the elastic potential energy of the first spring and affecting the fit between the static ring and the dynamic ring, thereby effectively improving the sealing and service life of the energy-saving pump.

[0014] 2. The present invention realizes the rapid positioning of the annular plate and the cylindrical tube and controls the movement of the push rod by using the first magnet block and the second magnet block in combination, thereby quickly realizing the installation and replacement of the annular plate and the blades and improving the convenience of blade replacement. At the same time, by setting up multiple sets of impellers, the vortex effect of the water flow during the water extraction process is avoided from forming a reaction force on the blades, thereby affecting the pumping energy efficiency. The coordinated use of multiple sets of annular plates and blades makes the pump body have an energy-saving effect.

[0015] 3. The present invention screws the threaded rod to make the threaded rod cooperate with the threaded thread, and at the same time moves the threaded rod toward the locking rod, further driving the sealing plate and the annular sealing protrusion to move toward the locking rod, so that the annular sealing protrusion is inserted into the annular sealing groove, completing the locking of the rod and the sealing of the cylindrical tube, thereby preventing water flow from corroding the inside of the cylindrical tube and effectively improving the service life of the cylindrical tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the impeller assembly in the present invention.

[0019] Figure 3 It is a schematic structural diagram of the connection between the annular plate and the blades in the present invention.

[0020] Figure 4 It is a structural schematic diagram of the connection between the cylindrical tube and the first annular groove in the present invention.

[0021] Figure 5 It is a schematic cross-sectional view of the connection between the cylindrical tube and the locking rod in the present invention.

[0022] Figure 6 It is a structural schematic diagram of the connection between the cylindrical tube, threaded rod and abutment rod in the present invention.

[0023] Figure 7 It is a structural schematic diagram of the connection between the support rod and the second annular groove in the present invention.

[0024] Figure 8 Schematic diagram of the structure of the sealing component in the present invention.

[0025] Figure 9 for Figure 8Schematic diagram of the front view structure.

[0026] Figure 10 for Figure 9 Schematic diagram of the enlarged structure at point A in the middle.

[0027] Figure 11 This is a schematic cross-sectional view of the connection between the slide bar, magnetic rod, and coil in the present invention.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1. Housing; 2. Impeller assembly; 201. Pump shaft; 202. Cylindrical tube; 203. Annular plate; 204. Blades; 205. First magnet block; 206. Lock hole; 207. First annular groove; 208. Lock rod; 209. Stop plate; 210. First return spring; 211. Threaded rod; 212. Retaining rod; 213. Thread; 214. Sealing plate; 215. Annular sealing protrusion; 216. Annular sealing groove; 217. Second annular groove; 218. Annular sleeve; 219. Slide plate; 220. Guide groove; 221. Second Magnet block; 3. Sealing assembly; 301. Bushing; 302. Disc; 303. First sealing ring; 304. U-shaped annular support plate; 305. First annular magnet; 306. Z-shaped annular sealing gasket; 307. Second annular magnet; 308. Z-shaped annular pressure plate; 309. First spring; 310. Stationary ring; 311. Moving ring; 312. Electromagnet; 313. Sliding rod; 314. Magnetic rod; 315. Disc; 316. Baffle; 317. Second spring; 318. Coil; 319. Bevel block; 4. Water inlet; 5. Water outlet pipe. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] For example 1, please refer to Figure 1-11The present invention provides the following technical solutions: an energy-saving pump sealing device, comprising a housing 1; an impeller assembly 2 for pumping water is provided inside the housing 1, the impeller assembly 2 comprises a pump shaft 201, a sealing assembly 3 is rotatably connected to a side surface of the housing 1, the sealing assembly 3 comprises a shaft sleeve 301 rotatably connected to the housing 1, one end of the shaft sleeve 301 is fixedly connected to a disc 302, and the disc 302 is fixedly connected to the pump shaft 201; the sealing assembly 3 also comprises a first sealing ring 303 fixedly connected to the inner wall of the housing 1, the inner wall of the first sealing ring 303 is fixedly connected to a U-shaped annular support plate 304, and the U-shaped The inner side of the annular support plate 304 is fixedly connected to a first annular magnet 305, the inner wall of the U-shaped annular support plate 304 is fixedly connected to a Z-shaped annular sealing gasket 306, the inner wall of the U-shaped annular support plate 304 is slidably matched with a second annular magnet 307, the outer wall of the Z-shaped annular sealing gasket 306 is covered with a Z-shaped annular pressure plate 308, a first spring 309 is evenly fixedly connected between the Z-shaped annular pressure plate 308 and the second annular magnet 307, a static ring 310 is fixedly connected between the U-shaped annular support plate 304 and the Z-shaped annular sealing gasket 306, and the outer wall of the sleeve 301 is fixedly connected to a static ring 310 that is rotatably connected to the static ring 310. The movable ring 311 is touched, and the top of the U-shaped annular support plate 304 is fixedly connected to an electromagnet 312 covered on each first spring 309; one side of the second annular magnet 307 is evenly fixedly connected to a plurality of slide rods 313 that penetrate the first annular magnet 305 and the U-shaped annular support plate 304, and the outer wall of the slide rod 313 is slidably connected to a magnetic rod 314, and the outer wall of the slide rod 313 is fixedly connected to a circular plate 315 that is slidably sleeved on the magnetic rod 314, and the end of the slide rod 313 is fixedly connected to a baffle 316, and a second spring sleeved on the magnetic rod 314 is fixedly connected between the baffle 316 and the circular plate 315. Spring 317, the circular plate 315 is fixedly connected to a coil 318 covered on the magnetic rod 314 (the coil 318 belongs to the coil assembly, and the connection relationship between the various components in the coil assembly is the existing technology and will not be explained again. The coil assembly is not drawn in this application), and one side of the disk 302 is evenly fixedly connected to an inclined block 319 that contacts the magnetic rod 314 (the contact surface of the inclined block 319 and the magnetic rod 314 is gradually inclined, so that the radial distance from the magnetic rod 314 to the U-shaped ring support plate 304 changes, so that the magnetic rod 314 is lifted up to a different height during the contact between the inclined block 319).

[0032] The operation process of this embodiment is as follows: first, the end of the sleeve 301 is connected to the output shaft of the external motor, and then the external motor is controlled to drive the sleeve 301 to rotate, thereby driving the dynamic ring 311 and the disk 302 to rotate, and then driving the several inclined blocks 319 on the disk 302 to rotate (the initial magnetic rod 314 does not contact the inclined blocks 319). As the first spring 309 is used for a long time, the elastic force of the first spring 309 itself becomes smaller. Under the action of the opposite repulsion between the first annular magnet 305 and the second annular magnet 307, the second annular magnet 307 and the first spring 309 move toward the direction of the static ring 310, thereby driving the sliding rod 313 and the magnetic rod 314 to move toward the direction of the static ring 310 through the second annular magnet 307. At this time, the magnetic rod 314 conflicts with the rotating inclined block 319. At the same time, the inclined block 319 is driven to rotate through the disk 302, so that The inclined block 319 contacts the magnetic rod 314 and moves away from the inclined block 319 (the second spring 317 is stretched at this time). When the inclined block 319 rotates until it is no longer in contact with the magnetic rod 314, the magnetic rod 314 is reset under the elastic force of the second spring 317. The magnetic rod 314 moves back and forth inside the coil 318, thereby generating an induced current, which in turn provides electrical energy for the electromagnet 312 to generate an adsorption force, thereby driving the second annular magnet 307 to move toward the static ring 310, thereby compressing the first spring 309, thereby increasing the elastic potential energy of the first spring 309, and further through the Z-shaped annular pressure plate 308 and the Z-shaped annular sealing gasket 306, the static ring 310 and the dynamic ring 311 are tightly fitted, thereby preventing the elastic potential energy of the first spring 309 from weakening and affecting the fit between the static ring 310 and the dynamic ring 311, thereby effectively improving the sealing and service life of the energy-saving pump.

[0033] For example 2, please refer to Figure 1-11 , this embodiment 2 is improved as follows on the basis of embodiment 1, the impeller assembly 2 also includes a cylindrical tube 202 fixedly connected to the end of the pump shaft 201, the outer peripheral side of the cylindrical tube 202 is evenly rotated with a plurality of annular plates 203, the outer peripheral side of the annular plate 203 is fixedly connected to a plurality of blades 204, the inner peripheral side of the annular plate 203 is symmetrically fixedly embedded with a first magnet block 205, the inner peripheral side of the annular plate 203 is symmetrically opened with a lock hole 206, the outer peripheral side of the cylindrical tube 202 is evenly opened with a first annular groove 207 that rotates with the plurality of annular plates 203, A locking rod 208 that is symmetrically and slidingly connected to the locking hole 206 runs through an annular groove 207. The side surface of the locking rod 208 is fixedly connected to a limit plate 209 located inside the cylindrical tube 202. A first return spring 210 that is sleeved on the locking rod 208 is fixedly connected between the limit plate 209 and the cylindrical tube 202. A threaded rod 211 is threadedly connected to the inner side surface of the cylindrical tube 202. One end of the threaded rod 211 is fixedly connected to a push rod 212 that contacts the locking rod 208. The inner wall of the cylindrical tube 202 is provided with a thread 213 that threadably cooperates with the threaded rod 211.

[0034] The other end of the threaded rod 211 is fixedly connected to a sealing plate 214, and a side of the sealing plate 214 is fixedly connected to an annular sealing protrusion 215. A side of the cylindrical tube 202 is provided with an annular sealing groove 216 that rotates with the annular sealing protrusion 215. A second annular groove 217 is provided on the side of the push rod 212. An annular sleeve 218 is rotatably connected inside the second annular groove 217. The inner wall of the annular sleeve 218 is symmetrically fixedly connected to a slide plate 219 that slides with the cylindrical tube 202. The inner circumference of the cylindrical tube 202 is symmetrically provided with a slide plate 219 that slides with the slide plate 219. The guide groove 220 is movably engaged, and the outer peripheral side of the cylindrical tube 202 is symmetrically fixed with second magnet blocks 221 respectively distributed on the outside of the first annular groove 207. The first magnet block 205 and the second magnet block 221 are magnetically attracted to each other, and the first annular magnet 305 and the second annular magnet 307 are magnetically repelled. The ends of several locking rods 208 located inside the cylindrical tube 202 are all provided with oblique openings that cooperate with the push rod 212 and are arranged in the same direction. A water inlet 4 is provided on one side of the shell 1, and a water outlet pipe 5 is provided through the outer wall of the shell 1.

[0035] The operation process of this embodiment is as follows: a plurality of annular plates 203 are sequentially sleeved on the outer wall of the cylindrical tube 202, so that the two first magnet blocks 205 on the annular plate 203 are aligned with the two corresponding second magnet blocks 221 on the cylindrical tube 202 and attract each other, thereby completing the preliminary fixation of the annular plate 203 and the blade 204 on the outer wall of the cylindrical tube 202, and then the push rod 212 is inserted into the interior of the cylindrical tube 202, so that the push rod 212 conflicts with each locking rod 208 in turn, driving the locking rod 208 to move toward the corresponding locking hole 206, thereby completing the locking of the annular plate 203, and then the threaded rod 211 on one end of the push rod 212 contacts the thread 213 inside the cylindrical tube 202, and then the threaded rod 211 is screwed so that the threaded rod 211 is threadedly engaged with the thread 213, and at the same time, the threaded rod 211 is moved toward the direction close to the locking rod 208, further driving the sealing plate 214 and the annular sealing protrusion 215 toward the direction close to the locking rod 208. The annular sealing protrusion 215 is inserted into the annular sealing groove 216 (a sealing ring is installed inside the annular sealing groove 216), completing the locking of the rod 212. Reverse rotation of the threaded rod 211 can release the locking rod 208 and seal the cylindrical tube 202, thereby preventing the water flow from corroding the inside of the cylindrical tube 202 and effectively improving the service life of the cylindrical tube 202. In addition, by cooperating with the first magnet block 205 and the second magnet block 221, the annular plate 203 and the cylindrical tube 202 can be quickly positioned, and the movement of the rod 212 can be controlled to quickly install and replace the annular plate 203 and the blades 204, thereby improving the convenience of replacing the blades 204. At the same time, by setting up multiple sets of impellers, the vortex effect of the water flow during the water extraction process can be avoided from forming a reaction force on the blades 204, thereby affecting the pumping energy efficiency. The coordinated use of multiple sets of annular plates 203 and blades 204 makes the pump body have an energy-saving effect.

[0036] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0037] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An energy-saving pump sealing device, comprising a housing (1); characterized in that: An impeller assembly (2) for pumping water is provided inside the housing (1), the impeller assembly (2) including a pump shaft (201), a sealing assembly (3) is rotatably connected to a side surface of the housing (1), the sealing assembly (3) includes a shaft sleeve (301) rotatably connected to the housing (1), one end of the shaft sleeve (301) is fixedly connected to a disc (302), and the disc (302) is fixedly connected to the pump shaft (201); The sealing assembly (3) further comprises a first sealing ring (303) fixedly connected to the inner wall of the housing (1); a U-shaped annular support plate (304) is fixedly connected to the inner wall of the first sealing ring (303); a first annular magnet (305) is fixedly connected to an inner side surface of the U-shaped annular support plate (304); a Z-shaped annular sealing gasket (306) is fixedly connected to the inner wall of the U-shaped annular support plate (304); a second annular magnet (307) is slidably fitted on the inner wall of the U-shaped annular support plate (304); and an outer wall of the Z-shaped annular sealing gasket (306) is fixedly connected to the inner wall of the U-shaped annular support plate (304). The cover is provided with a Z-shaped annular pressure plate (308), a first spring (309) is evenly fixedly connected between the Z-shaped annular pressure plate (308) and the second annular magnet (307), a static ring (310) is fixedly connected between the U-shaped annular support plate (304) and the Z-shaped annular sealing gasket (306), a dynamic ring (311) that is in rotational contact with the static ring (310) is fixedly connected to the outer wall of the shaft sleeve (301), and an electromagnet (312) covered on each first spring (309) is fixedly connected to the inner top of the U-shaped annular support plate (304); One side of the second annular magnet (307) is evenly fixedly connected to a plurality of slide bars (313) that pass through the first annular magnet (305) and the U-shaped annular support plate (304); the outer wall of the slide bar (313) passes through and is slidably connected to a magnetic rod (314); the outer wall of the slide bar (313) is fixedly connected to a circular plate (315) that is slidably sleeved on the magnetic rod (314); the end of the slide bar (313) is fixedly connected to a baffle (316); a second spring (317) sleeved on the magnetic rod (314) is fixedly connected between the baffle (316) and the circular plate (315); a coil (318) that is covered on the magnetic rod (314) is fixedly connected to the circular plate (315); and one side of the disk (302) is evenly fixedly connected to an inclined block (319) that contacts the magnetic rod (314).

2. An energy-saving pump sealing device according to claim 1, characterized in that: The impeller assembly (2) further comprises a cylindrical tube (202) fixedly connected to the end of the pump shaft (201); a plurality of annular plates (203) are uniformly rotated on the outer circumferential side surface of the cylindrical tube (202); a plurality of blades (204) are fixedly connected to the outer circumferential side surface of the annular plate (203); a first magnet block (205) is symmetrically fixedly embedded on the inner circumferential side surface of the annular plate (203); and lock holes (206) are symmetrically opened on the inner circumferential side surface of the annular plate (203).

3. An energy-saving pump sealing device according to claim 2, characterized in that: The outer circumferential side surface of the cylindrical tube (202) is evenly provided with a first annular groove (207) that is rotatably engaged with the plurality of annular plates (203); a locking rod (208) that is symmetrically and slidingly connected to the interior of the first annular groove (207) and is plug-engaged with the locking hole (206); a limiting plate (209) located inside the cylindrical tube (202) is fixedly connected to the circumferential side surface of the locking rod (208); and a first return spring (210) that is sleeved on the locking rod (208) is fixedly connected between the limiting plate (209) and the cylindrical tube (202).

4. An energy-saving pump sealing device according to claim 3, characterized in that: The inner circumferential side surface of the cylindrical tube (202) is threadedly connected to a threaded rod (211), one end of the threaded rod (211) is fixedly connected to a stop rod (212) that contacts the locking rod (208), and the inner wall of the cylindrical tube (202) is provided with a thread (213) that matches the thread of the threaded rod (211).

5. The energy-saving pump sealing device according to claim 4, characterized in that: The other end of the threaded rod (211) is fixedly connected to a sealing plate (214), one side of the sealing plate (214) is fixedly connected to an annular sealing protrusion (215), and one side of the cylindrical tube (202) is provided with an annular sealing groove (216) that rotatably cooperates with the annular sealing protrusion (215).

6. The energy-saving pump sealing device according to claim 5, characterized in that: A second annular groove (217) is provided on the circumferential side surface of the support rod (212), an annular sleeve (218) is rotatably connected inside the second annular groove (217), a slide plate (219) that is symmetrically fixedly connected to the inner wall of the annular sleeve (218) and is in sliding engagement with the cylindrical tube (202), and a guide groove (220) that is symmetrically provided on the inner circumferential side surface of the cylindrical tube (202) and is in sliding engagement with the slide plate (219).

7. The energy-saving pump sealing device according to claim 6, characterized in that: Second magnet blocks (221) respectively distributed outside the first annular groove (207) are symmetrically fixedly embedded on the outer peripheral side surface of the cylindrical tube (202); the first magnet block (205) and the second magnet block (221) are magnetically attracted to each other, and the first annular magnet (305) and the second annular magnet (307) are magnetically repelled from each other.

8. The energy-saving pump sealing device according to claim 7, characterized in that: The ends of the locking rods (208) located inside the cylindrical tube (202) are all provided with oblique openings for contacting and cooperating with the stop rods (212) and are arranged in the same direction. A water inlet (4) is provided on one side of the shell (1), and a water outlet pipe (5) is provided through the outer wall of the shell (1).

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