A slurry pump with easy impeller replacement

Abstract

The present invention provides a slurry pump with an impeller that is easy to replace, and relates to the technical field of slurry pumps; the slurry pump with an impeller that is easy to replace includes a bearing seat, a pump body and an impeller connected to the bearing seat, and a pump cover connected to the pump body. The slurry pump with an impeller that is easy to replace also includes a base and a sliding mechanism, wherein the base is provided with a pump cover fixing portion for fixing the pump cover; the sliding mechanism includes a power unit and a slide arranged on the base, the slide can be driven by the power unit to slide on the base to approach or move away from the pump cover fixing portion, and the bearing seat is fixed on the slide. After the pump cover is separated from the pump body, the bearing seat, the pump body and the impeller can slide with the slide and move away from the pump cover, so that the impeller is exposed. The slurry pump with an impeller that is easy to replace of the present invention can replace the impeller more conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of slurry pumps, and in particular to a slurry pump with an impeller that is easy to replace. Background Art

[0002] A slurry pump is a centrifugal pump that transports suspended particles in liquid. It is widely used in mining, electricity, metallurgy, coal, environmental protection and other industries to transport slurries containing solid particles, such as ore slurry transportation in metallurgical ore dressing plants, hydraulic ash removal in thermal power plants, coal slurry and heavy medium transportation in coal washing plants, dredging of rivers, river desilting, etc.

[0003] Since the transported liquid contains solid particles, the impeller in the slurry pump is easy to wear and needs to be replaced frequently. At present, when replacing the impeller, it is necessary to disconnect the pipeline connected to the slurry pump, then remove the bolt pair connecting the pump cover and the pump body, and then replace the impeller. However, the above scheme has the following shortcomings: the pipeline connected to the slurry pump is usually a metal pipeline. After the pipeline is disconnected from the slurry pump, the metal pipeline needs to be fixed, otherwise the metal pipeline is easy to bend, and it is inconvenient to fix the metal pipeline. Summary of the invention

[0004] To this end, the present invention proposes a slurry pump with an impeller that is easy to replace, so as to at least partially solve the technical problem that it is inconvenient to replace the impeller of the existing slurry pump.

[0005] The technical solution of the present invention is as follows:

[0006] A slurry pump that is easy to replace an impeller, comprises a bearing seat, a pump body and an impeller connected to the bearing seat, and a pump cover connected to the pump body, and also comprises a base and a sliding mechanism, wherein the base is provided with a pump cover fixing portion for fixing the pump cover; the sliding mechanism comprises a power unit and a slide table arranged on the base, the slide table can be driven by the power unit to slide on the base and approach or move away from the pump cover fixing portion, and the bearing seat is fixed on the slide table; after the pump cover is separated from the pump body, the bearing seat, the pump body and the impeller can slide with the slide table and move away from the pump cover, thereby exposing the impeller.

[0007] Furthermore, the base is provided with two guide grooves, which extend along the sliding direction of the slide and are respectively arranged on both sides of the moving path of the slide. The slide is provided with guide blocks that can guide the sliding in the two guide grooves one by one. In the direction away from the pump cover fixing part, the two guide grooves extend obliquely downward so that when the slide moves in the direction away from the pump cover fixing part, the slide has a downward displacement.

[0008] Furthermore, the slide is provided with an elongated hole, which extends along the height direction of the slide and penetrates the slide along the sliding direction of the slide. A connecting block is provided in the elongated hole, and the connecting block can slide in the elongated hole along the length direction of the elongated hole. The connecting block is provided with a threaded hole which penetrates the connecting block along the extension direction of the slide. The power unit includes a screw rotatably arranged on the base, and the screw is screwed to the threaded hole.

[0009] Furthermore, the angle between the center line of the guide groove and the axis of the impeller is between 4° and 8°.

[0010] Furthermore, it also includes an impeller fixing part, which includes two support rods, and the two support rods are respectively arranged on both sides of the sliding path of the slide, and the two support rods are respectively rotatably arranged on the base, and can slide on the base along the axial direction of the impeller, and the two support rods are respectively provided with friction blocks; the friction blocks can rotate with the support rods to be opposite to the process holes on the impeller, and can slide with the support rods and be inserted into the process holes, and the two friction blocks can squeeze the inner wall surface of the process hole and apply friction force to the inner wall surface of the process hole to limit the rotation of the impeller.

[0011] Furthermore, the two friction blocks are rotatably disposed on the corresponding support rods, and the two friction blocks respectively have an arc surface adapted to the inner wall surface of the process hole, and the arc surface can fit with the inner wall surface of the process hole to apply friction force to the inner wall surface of the process hole.

[0012] Furthermore, it also includes a telescopic part, which is supported between the two support rods, and the telescopic part includes a cylinder and two telescopic rods, one end of the cylinder is provided with a left-handed threaded hole, and the other end is provided with a right-handed threaded hole, one of the two telescopic rods is screwed to the left-handed threaded hole, and the other of the two telescopic rods is screwed to the right-handed threaded hole.

[0013] Furthermore, the two support rods are respectively provided with fixing pins, and the ends of the two telescopic rods away from the cylinder are respectively provided with fitting holes, and the fitting holes on the two telescopic rods can be correspondingly fitted on the two fixing pins.

[0014] Furthermore, the cylinder body includes two detachably connected cylinder sections, and connecting plates are respectively provided on the ends of the two cylinder sections away from the corresponding telescopic rods, one of the two connecting plates is provided with two threaded holes, and the other of the two connecting plates is correspondingly provided with two through holes, so that bolts pass through the through holes and are screwed to the corresponding threaded holes to fix the two cylinder sections; and corresponding to the two connecting plates, fixing blocks detachably connected to the corresponding connecting plates are respectively provided on the base.

[0015] Furthermore, two fixed shafts are fixed on the base, and through holes are respectively provided on the two support rods. The through holes on the two support rods can be correspondingly sleeved on the fixed shafts, so that the support rods have the freedom to swing around the axis of the fixed shaft and the freedom to slide along the axial direction of the fixed shaft.

[0016] The working principle and beneficial effects of the present invention are:

[0017] The slurry pump that is easy to replace the impeller provided by the present invention is provided with a base and a slide that can slide on the base; a pump cover fixing part for fixing the pump cover is provided on the base, and the bearing seat is fixed on the slide; after the pump body is separated from the pump cover, the pump cover is still fixed relative to the base through the pump cover fixing part, and the pump body can slide away from the pump cover with the slide to expose the impeller for replacement of the impeller. In this process, the pump cover remains fixed, so the water inlet pipe and the water outlet pipe connected to the pump cover do not need to be removed and supported. On the whole, the slurry pump that is easy to replace the impeller provided by the present invention can replace the impeller more conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 A three-dimensional diagram of a slurry pump for facilitating replacement of an impeller provided by an embodiment of the present invention;

[0020] Figure 2 An exploded view of a slurry pump for facilitating replacement of an impeller provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the structure of an impeller holding portion provided by an embodiment of the present invention;

[0022] Figure 4 A schematic structural diagram of another state of an impeller holding portion provided by an embodiment of the present invention;

[0023] Figure 5 for Figure 3 A partial enlarged view of point A in the middle.

[0024] In the figure: 100, bearing seat; 200, pump body; 210, second half pipe; 300, impeller; 301, process hole; 400, pump cover; 410, first half pipe; 500, base; 510, pump cover fixing part; 520, fixed shaft; 530, fixed block; 501, slide groove; 502, guide groove; 600, sliding mechanism; 610, power unit; 620, slide table; 621, guide block; 630, connecting block; 601, long hole; 700, intermediate pipe; 800, impeller fixing part; 810, support rod; 811, friction block; 820, telescopic member; 821, telescopic rod; 822, cylinder; 823, cylinder section; 824, connecting plate. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0026] This embodiment provides a slurry pump that is easy to replace the impeller, which will be referred to as a slurry pump in the following. Figure 1 As shown, the slurry pump includes a bearing seat 100, a pump body 200 and an impeller 300 connected to the bearing seat 100, and a pump cover 400 connected to the pump body 200. The slurry pump also includes a base 500 and a sliding mechanism 600, wherein the base 500 is provided with a pump cover fixing portion 510 for fixing the pump cover 400; the sliding mechanism 600 includes a power unit 610 and a slide 620 provided on the base 500, and the slide 620 can be driven by the power unit 610 to slide on the base 500 to approach or move away from the pump cover fixing portion 510. The bearing seat 100 is fixed on the slide 620, and after the pump cover 400 is separated from the pump body 200, the bearing seat 100, the pump body 200 and the impeller 300 can slide with the slide 620 and move away from the pump cover 400, so that the impeller 300 is exposed.

[0027] In general, when the impeller 300 of the slurry pump of this embodiment needs to be replaced, the pump cover 400 is fixed by the pump cover fixing portion 510 on the base 500, and the pump body 200 moves with the slide 620 and moves away from the pump cover 400, so that the impeller 300 is exposed. At this time, the state of the slurry pump is as follows: Figure 1 As shown, the impeller 300 can be replaced. Since the pump cover 400 is fixed during the process of replacing the impeller 300, the pipeline connected to the pump cover 400 does not need to be disassembled. Therefore, the impeller 300 of the slurry pump of this embodiment is more convenient to replace.

[0028] In this embodiment, the connection structure between the bearing seat 100, the pump body 200, the impeller 300 and the pump cover 400 can refer to the prior art, and its structure is not described in detail here. Among them, the pump body 200 and the pump cover 400 are connected by a bolt pair. After the bolt pair between the pump body 200 and the pump cover 400 is removed, the pump body 200 and the pump cover 400 can be separated.

[0029] refer to Figure 1 and Figure 2 As shown, the base 500 of this embodiment is in a rectangular parallelepiped shape, and a slide groove 501 is configured on the top surface of the base 500. The length direction of the slide groove 501 is parallel to the axial direction of the impeller 300, and the slide 620 can slide in the slide groove 501 along the length direction of the slide groove 501. Figure 2 As shown, guide grooves 502 are respectively provided on two sidewalls of the slide groove 501 parallel to its length direction, and guide blocks 621 capable of correspondingly guiding and sliding in each guide groove 502 are provided on the slide table 620. In the direction away from the pump cover fixing part 510, the two guide grooves 502 extend obliquely downward.

[0030] By providing the guide groove 502 and the guide block 621, when the slide 620 slides away from the pump cover fixing portion 510, it also has a downward displacement, which can reduce the risk of the pump body 200 being blocked during horizontal movement. Figure 1 and Figure 2 As shown, a first half pipe 410 is provided on the pump cover 400, and a second half pipe 210 is provided on the pump body 200. When the pump cover 400 and the pump body 200 are connected together by a plurality of bolt pairs, the first half pipe 410 and the second half pipe 210 are assembled into a water outlet section of the slurry pump. The water outlet section is connected to the middle pipe 700 by a bolt pair, and the output pipe and the middle pipe 700 are connected by a bolt pair.

[0031] When the impeller 300 of the slurry pump of this embodiment is replaced, the pump cover 400, the intermediate pipe 700 and the output pipe remain fixed, and when the pump body 200 is moved, the second half pipe 210 has a movement relative to the intermediate pipe 700; if the pump body 200 only moves horizontally, the friction between the second half pipe 210 and the intermediate pipe 700 will cause the second half pipe 210 and the intermediate pipe 700 to wear, and the second half pipe 210 may also be unable to move due to the obstruction of the intermediate pipe 700. In this embodiment, by making the pump body 200 have a downward displacement when moving horizontally, the friction between the second half pipe 210 and the intermediate pipe 700 can be avoided, so that the sliding of the pump body 200 is smoother.

[0032] refer to Figure 2As shown, in this embodiment, a long hole 601 is provided on the slide 620, and the length direction of the long hole 601 is parallel to the height direction of the slide 620, and penetrates the slide 620 along the sliding direction of the slide 620. A connecting block 630 is provided in the long hole 601, and the connecting block 630 can slide in the long hole 601 along the length direction of the long hole 601, and a threaded hole is provided on the connecting block 630 that penetrates the connecting block 630 along the sliding direction of the slide 620. The aforementioned power unit 610 includes a lead screw rotatably provided on the base 500, and the lead screw is screwed with the threaded hole on the connecting block 630. By providing the above-mentioned lead screw and connecting block 630, when the lead screw is rotated, the connecting block 630 and the slide 620 move along the axial direction of the lead screw, and at the same time, the slide 620 has a vertical displacement by sliding the connecting block 630 up and down in the long hole 601.

[0033] In this embodiment, the angle between the center line of the guide groove 502 and the axis of the impeller 300 is between 4° and 8°. The angle is, for example, 4°, 5°, 6°, 7° or 8°, and can also be any other value between 4° and 8°.

[0034] refer to Figure 1 As shown, the pump cover fixing portion 510 of this embodiment is a vertical plate fixedly arranged on the base 500, and the pump cover 400 and the vertical plate can be connected by a bolt pair, that is, after the pump body 200 and the pump cover 400 are disassembled, the pump cover 400 and the vertical plate are fixed together by the bolt pair. In this embodiment, a plurality of through holes are provided on the vertical plate, each of which is opposite to each connection hole on the pump cover 400 for connecting with the pump body 200, and each connection hole includes a light hole section and a threaded section connected in series, wherein the light hole section is close to the pump body 200, and the threaded section is close to the vertical plate. When disassembling the pump body 200 and the pump cover 400, the bolt pair in the connection hole opposite to the through hole on the vertical plate can be removed first, and then the bolt passes through the through hole on the vertical plate and is screwed with the threaded section, and after the pump cover 400 and the vertical plate are fixed together, the other bolt pairs between the pump body 200 and the pump cover 400 can be removed.

[0035] In this embodiment, reference Figure 1 and Figure 2As shown, an impeller fixing part 800 is also provided on the base 500, and the impeller fixing part 800 includes two support rods 810, which are disposed on two opposite sides of the slide 620, and the two support rods 810 are rotatably disposed on the base 500, and can slide on the base 500 along the axial direction of the impeller 300. The two support rods 810 are respectively provided with friction blocks 811, which can rotate with the support rods 810 to be opposite to the process hole 301 on the impeller 300, and can slide with the support rods 810 to be inserted into the process hole 301, and the two friction blocks 811 can squeeze the inner wall surface of the process hole 301 and apply friction force to the inner wall surface of the process hole 301, thereby limiting the rotation of the impeller 300.

[0036] By providing the above-mentioned impeller fixing part 800, the disassembly of the impeller 300 is facilitated, because the main shaft of the slurry pump and the impeller 300 are connected by threads, specifically, an external thread is provided on the main shaft, and a threaded hole is provided on the impeller 300, and the connection between the main shaft and the impeller 300 is realized by screwing the external thread and the threaded hole. When the impeller 300 and the main shaft need to be separated, the impeller 300 needs to be fixed, and then the main shaft is rotated to unscrew the impeller 300 from the main shaft. In this embodiment, by providing the above-mentioned friction block 811, a stable circumferential constraint can be applied to the impeller 300 during the disassembly process of the impeller 300, thereby fixing the impeller 300.

[0037] For specific structure, refer to Figure 1 and Figure 3 As shown, two fixed shafts 520 are fixed on the base 500, and through holes are respectively provided on the two support rods 810. The through holes on the two support rods 810 can be correspondingly sleeved on the two fixed shafts 520, so that the support rods 810 have the freedom to swing around the axis of the fixed shaft 520 and the freedom to slide along the axial direction of the fixed shaft 520. That is, the through holes can rotate on the fixed shaft 520 and move on the fixed shaft 520 along the axial direction of the fixed shaft 520.

[0038] By enabling the support rods 810 to swing around the fixed shaft 520, the two support rods 810 can be swung away from the moving path of the slide 620 to avoid blocking the movement of the slide 620. After the slide 620 is moved into place, the two support rods 810 can be swung until the friction blocks 811 thereon are opposite to the process holes 301 on the impeller 300. By enabling the support rods 810 to move along the axial direction of the fixed shaft 520, the friction blocks 811 can be inserted into the process holes 301 by the support rods 810 moving along the axial direction of the fixed shaft 520 to apply friction force to the inner wall of the process holes 301, thereby limiting the rotation of the impeller 300; and when the main shaft is rotated, the impeller 300 can be moved away from the main shaft and detached from the main shaft.

[0039] In this embodiment, reference Figure 3 As shown, two friction blocks 811 are rotatably disposed on corresponding support rods 810, and the two friction blocks 811 respectively have arcuate surfaces adapted to the inner wall surface of the process hole 301, and the arcuate surfaces can fit with the inner wall surface of the process hole 301 to apply friction force to the inner wall surface of the process hole 301. In this embodiment, by arranging the two friction blocks 811 to be rotatable on the support rods 810, the arcuate surfaces of the friction blocks 811 can better fit with the inner wall surface of the process hole 301 through the rotation of the friction blocks 811.

[0040] refer to Figures 3 to 5 As shown, in this embodiment, a telescopic member 820 is provided between the two support rods 810, and the telescopic member 820 is supported between the two support rods 810, and the telescopic member 820 includes a cylinder 822 and two telescopic rods 821, a left-handed threaded hole is provided on one end of the cylinder 822, and a right-handed threaded hole is provided on the other end, one of the two telescopic rods 821 is screwed to the left-handed threaded hole, and the other of the two telescopic rods 821 is screwed to the right-handed threaded hole; the two telescopic rods 821 are hinged to the two support rods 810 at one end away from the cylinder 822.

[0041] By providing the telescopic member 820, the two telescopic rods 821 can be extended or retracted at the same time when the cylinder 822 is rotated. When the distance between the two support rods 810 increases, the pressure of the friction block 811 on the inner wall of the process hole 301 will also increase, and the friction between the friction block 811 and the inner wall of the process hole 301 will increase, thereby better limiting the rotation of the impeller 300. When the distance between the two support rods 810 decreases, the friction between the friction block 811 and the inner wall of the process hole 301 can be reduced, thereby facilitating the removal of the impeller 300 from the support rod 810.

[0042] In this embodiment, reference Figures 3 to 5 As shown, the barrel 822 includes two detachably connected barrel sections 823, and connecting plates 824 are respectively provided on one end of the two barrel sections 823 away from the corresponding telescopic rod 821, one of the two connecting plates 824 is provided with two threaded holes, and the other of the two connecting plates 824 is provided with two through holes, so that bolts pass through the through holes and are screwed to the threaded holes to connect the two barrel sections 823; corresponding to the two connecting plates 824, fixed blocks 530 are respectively provided on the base 500, and the two connecting plates 824 can be detachably connected to the two fixed blocks 530 accordingly.

[0043] By configuring the barrel 822 to include two barrel sections 823, when the slide 620 moves, the two barrel sections 823 can be separated to avoid blocking the movement of the slide 620; when the impeller 300 needs to be fixed, the two barrel sections 823 can be connected together by bolts, and then the impeller 300 can be fixed or loosened by rotating the barrel 822. By configuring the fixing block 530 on the base 500, when there is no need to replace the impeller 300, the two connecting plates 824 can be connected to the corresponding fixing blocks 530 to avoid unexpected rotation of the support rod 810. Among them, the corresponding connecting plate 824 with a through hole is provided with a threaded hole on the corresponding fixing block 530, so as to be connected by bolts; and the corresponding connecting plate 824 with a threaded hole is provided with a through hole on the corresponding fixing block 530, so as to be connected by bolts.

[0044] In general, the process of replacing the impeller 300 of the slurry pump that facilitates the replacement of the impeller in this embodiment is as follows:

[0045] Remove the bolt pair connecting the pump body 200 and the pump cover 400, and fix the pump cover 400 to the pump cover fixing portion 510;

[0046] Rotate the lead screw to move the pump body 200 away from the pump cover 400;

[0047] Rotate the two support rods 810 so that the friction blocks 811 on the two support rods 810 are opposite to the process holes 301 on the impeller 300;

[0048] Slide the two support rods 810 to insert the friction blocks 811 on the two support rods 810 into the process holes 301;

[0049] Rotate the cylinder 822 to rotate the support rods 810 at both ends of the cylinder 822 outward, increase the pressure of the friction block 811 on the inner wall of the process hole 301, that is, increase the friction between the friction block 811 and the impeller 300, so as to limit the rotation of the impeller 300;

[0050] Rotate the main shaft to separate the main shaft from the impeller 300;

[0051] Connect the new impeller 300 to the main shaft;

[0052] Rotate the lead screw to bring the pump body 200 closer to the pump cover 400;

[0053] The pump body 200 and the pump cover 400 are connected by a bolt pair.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A slurry pump for facilitating replacement of an impeller, comprising a bearing seat (100), a pump body (200) and an impeller (300) connected to the bearing seat (100), and a pump cover (400) connected to the pump body (200), characterized in that: The pump housing (400) further comprises a base (500) and a sliding mechanism (600); the base (500) is provided with a pump cover fixing portion (510) for fixing the pump cover (400); the sliding mechanism (600) comprises a power unit (610) and a slide table (620) provided on the base (500); the slide table (620) can be driven by the power unit (610) to slide on the base (500) and approach or move away from the pump cover fixing portion (510); the bearing seat (100) is fixed on the slide table (620); after the pump cover (400) is separated from the pump body (200), the bearing seat (100), the pump body (200) and the impeller (300) can slide along with the slide table (620) and move away from the pump cover (400), so that the impeller (300) is exposed; The base (500) is provided with two guide grooves (502), the two guide grooves (502) extending along the sliding direction of the slide (620) and respectively arranged on both sides of the moving path of the slide (620), and the slide (620) is provided with guide blocks (621) capable of guiding the sliding in the two guide grooves (502) in a one-to-one correspondence; and in a direction away from the pump cover fixing portion (510), the two guide grooves (502) respectively extend downwardly at an angle, so that when the slide (620) moves in a direction away from the pump cover fixing portion (510), the slide (620) has a downward displacement; The slide (620) is provided with an elongated hole (601); the length direction of the elongated hole (601) is parallel to the height direction of the slide (620) and passes through the slide (620) along the sliding direction of the slide (620); a connecting block (630) is provided in the elongated hole (601); the connecting block (630) can slide in the elongated hole (601) along the length direction of the elongated hole (601); a threaded hole is provided on the connecting block (630) and passes through the connecting block (630) along the extension direction of the slide (620); the power unit (610) includes a lead screw rotatably provided on the base (500), and the lead screw is screwed to the threaded hole.

2. The slurry pump with easy impeller replacement according to claim 1, characterized in that: The angle between the center line of the guide groove (502) and the axis of the impeller (300) is between 4° and 8°.

3. The slurry pump with easy impeller replacement according to claim 1 or 2, characterized in that: The impeller fixing part (800) further comprises an impeller fixing part (800); the impeller fixing part (800) comprises two support rods (810), the two support rods (810) are respectively arranged on both sides of the moving path of the slide (620), the two support rods (810) are respectively rotatably arranged on the base (500), and can slide on the base (500) along the axial direction of the impeller (300); and the two support rods (810) are respectively provided with friction blocks (811); the friction blocks (811) can rotate with the support rods (810) to be opposite to the process hole (301) on the impeller (300), and can slide with the support rods (810) and be inserted into the process hole (301), and the two friction blocks (811) can squeeze the inner wall surface of the process hole (301) and apply friction force to the inner wall surface of the process hole (301) to limit the rotation of the impeller (300).

4. The slurry pump with easy impeller replacement according to claim 3, characterized in that: The two friction blocks (811) are rotatably disposed on the corresponding support rods (810), and the two friction blocks (811) respectively have an arc surface adapted to the inner wall surface of the process hole (301), and the arc surface can fit with the inner wall surface of the process hole (301) to apply friction force to the inner wall surface of the process hole (301).

5. The slurry pump with easy impeller replacement according to claim 3, characterized in that: The telescopic member (820) is also included, wherein the telescopic member (820) is supported between the two support rods (810), and the telescopic member (820) includes a cylinder (822) and two telescopic rods (821), one end of the cylinder (822) is provided with a left-handed threaded hole, and the other end of the cylinder (822) is provided with a right-handed threaded hole, one of the two telescopic rods (821) is screwed to the left-handed threaded hole, and the other of the two telescopic rods (821) is screwed to the right-handed threaded hole.

6. The slurry pump with easy impeller replacement according to claim 5, characterized in that: The two support rods (810) are respectively provided with fixing pins, and the two telescopic rods (821) are respectively provided with sleeve holes on one end away from the cylinder (822), and the sleeve holes on the two telescopic rods (821) can be correspondingly sleeved on the two fixing pins.

7. The slurry pump with easy impeller replacement according to claim 5, characterized in that: The cylinder body (822) comprises two detachably connected cylinder sections (823); a connecting plate (824) is respectively provided on one end of the two cylinder sections (823) away from the corresponding telescopic rod (821); one of the two connecting plates (824) is provided with two threaded holes; the other of the two connecting plates (824) is correspondingly provided with two through holes, so that bolts pass through the through holes and are screwed to the corresponding threaded holes to fix the two cylinder sections (823); and corresponding to the two connecting plates (824), a fixing block (530) detachably connected to the corresponding connecting plate (824) is respectively provided on the base (500).

8. The slurry pump with easy impeller replacement according to claim 3, characterized in that: Two fixed shafts (520) are fixedly arranged on the base (500), and through holes are respectively arranged on the two support rods (810). The through holes on the two support rods (810) can be correspondingly sleeved on the fixed shafts (520), so that the support rods (810) have the freedom to swing around the axis of the fixed shaft (520) and the freedom to slide along the axial direction of the fixed shaft (520).

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