Ceramic pump impeller and mounting method thereof

Abstract

The invention relates to the technical field of ceramic slurry pumps, and provides a ceramic pump impeller and a mounting method thereof, and the impeller comprises an impeller body, a hub clamping cylinder and a core head. A liquid inlet is formed in the axis of the impeller body, and a liquid outlet is formed in the peripheral wall; the hub clamping cylinder is connected with the impeller body and used for being detachably connected with a driving shaft. The core head is rotationally arranged in the impeller body and located on the side, facing the liquid inlet, of the hub clamping cylinder. A connecting shaft hole is formed in the hub clamping cylinder, a locking assembly is arranged in the hub clamping cylinder and used for locking the driving shaft in the connecting shaft hole, a driving assembly is arranged on the core head, and the driving assembly is used for driving the locking assembly to lock and unlock the driving shaft under rotation of the core head. In this way, through rotation and sliding of the core head, the lock head in the hub clamping cylinder and the driving shaft are rapidly connected and rapidly detached, the connecting difficulty of the driving shaft and the impeller is reduced, and the connecting simplicity and convenience of the driving shaft and the impeller are improved.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of ceramic slurry pumps, and particularly relates to a ceramic pump impeller and an installation method thereof. Background Art

[0002] Ceramics are materials with excellent corrosion resistance and wear resistance. The pump body and pump cover of ceramic pumps are made of acid-resistant ceramics. Ceramic pumps, also known as slurry pumps, usually operate in corrosive and high-temperature environments and are mainly used for transporting various ore slurries, tailings slurries, coal slurries, and corrosive slurries.

[0003] Traditional slurry pumps use ceramics as the pump body, that is, silicon carbide ceramic material. The impeller in the slurry pump is also currently made of ceramic material, which transports various liquid materials during rotation. However, when connecting the impeller to the drive shaft, it is difficult to connect the ceramic impeller to the drive shaft, making the connection between the drive shaft and the impeller rather troublesome. Summary of the Invention

[0004] To solve the above problems, the present disclosure provides a ceramic pump impeller and an installation method thereof. Through the rotation and sliding of the core head, the lock head in the hub cartridge can quickly establish a connection with the drive shaft and be quickly disassembled, reducing the connection difficulty between the drive shaft and the impeller and improving the simplicity of the connection between the drive shaft and the impeller.

[0005] The first aspect of the present disclosure provides a ceramic pump impeller, including: an impeller body with a liquid inlet at the axis center and a liquid outlet on the peripheral wall; a hub cartridge connected to the impeller body and used for detachably connecting to a drive shaft; a core head rotatably arranged inside the impeller body and located on the side of the hub cartridge facing the liquid inlet; a connecting shaft hole is provided on the hub cartridge, and a locking assembly is arranged inside the hub cartridge for locking the drive shaft in the connecting shaft hole. A driving assembly is provided on the core head, and the driving assembly is used to drive the locking assembly to lock and unlock the drive shaft under the rotation of the core head.

[0006] With such a setting, when installing the impeller on the ceramic pump, the hub cartridge of the impeller is sleeved on the drive shaft, so that the drive shaft enters the hub cartridge; then the core head is rotated at the liquid inlet to start the driving assembly through the rotation of the core head, so as to drive the locking assembly to lock the drive shaft, realizing the quick locking connection between the impeller and the drive shaft. When it is necessary to remove the impeller, the core head is also rotated to drive the driving assembly to act, and the locking of the impeller on the drive shaft is released through the locking assembly; enabling the lock head in the hub cartridge to quickly establish a connection with the drive shaft and be quickly disassembled, reducing the connection difficulty between the drive shaft and the impeller and improving the simplicity of the connection between the drive shaft and the impeller.

[0007] In some embodiments, the locking assembly includes: a lock rod rotatably disposed within the hub cartridge, the axis of rotation of the lock rod being parallel to the axis of the drive shaft; and a lock head connected to an end of the lock rod remote from the core head, a lock groove being formed in the circumferential wall of the drive shaft for the lock head to turn into.

[0008] With such an arrangement, when the impeller is locked to the drive shaft, the drive assembly is activated by the rotation of the core head. The drive assembly drives the lock rod to rotate, and after the lock rod rotates, it drives the lock head to rotate. The lock head turns into the lock groove in the circumferential wall of the drive shaft to lock the drive shaft and the hub cartridge, and further lock the drive shaft and the impeller body, thereby completing the locking of the impeller and the drive shaft. When unlocking, simply reverse the core head, and the drive assembly drives the lock rod and the lock head to reverse, causing the lock head to turn out of the lock groove to complete the unlocking of the impeller and the drive shaft.

[0009] In some embodiments, the drive assembly includes: a drive ring rotatably disposed within the hub cartridge, and a plurality of lock rods all rotating within the range enclosed by the inner ring of the drive ring; a drive rod having one end connected to the drive ring and the other end connected to the core head; a ring of teeth being provided on the inner wall of the drive ring, and a gear being connected to an end of the lock rod remote from the lock head, the gear meshing with the inner wall of the drive ring.

[0010] With such an arrangement, when the core head rotates, the core head drives the drive rod to rotate, the drive rod drives the drive ring to rotate, and after the drive ring rotates, it drives the gear to rotate through the ring of teeth on the inner ring, and further drives the lock rod to rotate, causing the lock head to rotate in the same direction as the rotation direction of the drive ring to turn the lock head into the lock groove to complete the locking of the hub cartridge and the drive shaft. When unlocking, simply reverse the core head, and the drive rod, the drive ring, the lock rod and the lock head reverse to turn the lock head out of the lock groove to unlock the hub cartridge and the drive shaft.

[0011] In some embodiments, the core head is slidably disposed on the hub cartridge, the core head sliding along the axial extension direction of the lock rod, a jack being formed in the drive ring, and the drive rod being connected to the drive ring by slidably passing through the jack.

[0012] With such an arrangement, when it is necessary to repair the drive ring, the core head is pulled in the direction of the liquid inlet, causing the drive rod to slide out of the jack as the core head slides, so as to disconnect the drive rod and the drive ring, and further facilitate the exposure of the drive ring at the hub cartridge for repair; and the jack only restricts the relative rotation of the drive rod and the drive ring, so as to facilitate the drive rod to drive the drive ring to rotate again after being inserted into the jack.

[0013] In some embodiments, a sliding column is connected to one side of the core head facing the hub cartridge. A rotation groove for the sliding column to rotate and slide is formed in the hub cartridge. The sliding column is rotatably connected in the rotation groove. The rotation axis of the sliding column is parallel to the rotation axis of the locking rod. A connecting member for connecting the core head and the hub cartridge is provided on the sliding column.

[0014] With such a setting, through the rotation and sliding of the sliding column in the rotation groove, the rotation and sliding of the core head on the hub cartridge are realized. Furthermore, under the connection of the connecting member, the connection between the core head and the hub cartridge is always maintained, restricting the core head from completely detaching from the hub cartridge.

[0015] In some embodiments, the connecting member includes a spring sleeved on the sliding column. The spring has a torsional force, with one end connected to the sliding column and the other end connected to the bottom of the rotation groove.

[0016] With such a setting, the elastic force and torsional force of the spring are provided to the sliding column, enabling the core head to rotate, slide on the hub cartridge, and establish a connection with the hub cartridge through the spring.

[0017] In some embodiments, a plurality of jack holes are evenly spaced along the circumferential direction of the driving ring. The direction in which the locking rod drives the lock head to rotate into the lock groove is the same as the direction of the restoring force formed by the torsional force of the spring acting on the core head.

[0018] With such a setting, when the core head rotates and drives the driving rod and the driving ring to rotate, the lock head rotates into the lock groove. At this time, when the core head is pulled towards the liquid inlet direction, the core head remains connected to the hub cartridge under the connection of the spring; until the driving rod disengages from the jack hole on the driving ring, the core head is rotated in the direction of the lock head rotation, causing the driving rod to rotate and align with the next clockwise jack hole on the driving ring. At this time, the pulling force and torsional force of the spring act on the core head, giving the core head a tendency to rotate counterclockwise; then the core head is pushed into the hub cartridge, causing the sliding column to drive the core head to reset under the spring pulling force, and inserting the driving rod into the next clockwise jack hole on the driving ring. While establishing a connection between the driving rod and the driving ring, the core head drives the driving rod and the driving ring to have a tendency to rotate counterclockwise under the torsional force of the spring, thereby enabling the spring torsional force to be transmitted to the locking rod through the driving rod and the driving ring, and then transmitted to the lock head to continue rotating into the lock groove, making the lock head rotate into the lock groove more firmly, strengthening the locking stability between the lock head and the driving shaft, and thus strengthening the connection stability between the hub cartridge and the driving shaft.

[0019] In some embodiments, in the sliding direction of the core head, when the spring is in a natural state, there is a gap between the core head and the hub cartridge.

[0020] It is set in such a way that when the ceramic pump is operating, the liquid enters from the liquid inlet and impacts the core head, causing the core head to receive a thrust force towards the hub cartridge, thereby enabling the gap between the core head, the impeller body, and the hub cartridge to be sealed, reducing the liquid from entering the rotating groove.

[0021] In some embodiments, a slot is provided in the hub cartridge for the driving rod to be inserted after passing through the jack. After the core head abuts against the hub cartridge, the driving rod is inserted into the slot.

[0022] It is set in such a way that when the core head receives a thrust force towards the hub cartridge, the driving rod slides towards the hub cartridge together with the core head, causing the end of the driving rod to be inserted into the slot, restricting the rotation of the driving rod, and further restricting the rotation of the driving ring, the locking rod, and the core head. In addition to strengthening the stability of the locking head turning into the locking groove, the gap between the core head and the impeller body is more stable, thereby enhancing the sealing performance of the core head locking the driving ring and blocking the rotating groove.

[0023] The second aspect of the present disclosure provides a method for installing a ceramic pump impeller, using the ceramic pump impeller as described in the first aspect. The method includes: sliding the drive shaft into the connecting shaft hole and aligning the locking groove with the locking head; rotating the core head to drive the driving ring and the locking rod to rotate, and turning the locking head on the locking rod into the locking groove; pulling the core head outwards from the impeller body until the driving rod disengages from the driving ring; rotating the core head in the direction of the locking head rotation until the driving rod aligns with the jack and then releasing, and inserting the driving rod into the jack to establish a connection between the core head and the driving ring.

[0024] It is set in such a way that by adopting the above method, the drive shaft and the hub cartridge can be quickly disassembled and assembled, the operation steps are convenient and concise, and no additional tools are required, which helps to save the installation and maintenance time of the ceramic pump impeller.

[0025] Compared with the prior art, the present disclosure has the following advantages: (1) Through the gear cooperation between the driving ring, the toothed ring, and the locking rod, when the core head rotates, a quick connection and disassembly can be established between the hub cartridge and the drive shaft, reducing the connection difficulty between the drive shaft and the impeller and improving the simplicity of the connection between the drive shaft and the impeller; (2) With the rotational and sliding settings of the core head, after strengthening the stability of the locking head turning into the locking groove, the rotating groove can also be blocked; (3) Inserting the driving rod into the slot further enhances the stability of the locking head turning into the locking groove and the stability of the core head blocking the rotating groove.

[0026] Other features and advantages of the present disclosure will be described in the subsequent specification, and will be partially obvious from the specification, or understood by implementing the present disclosure. The objectives and other advantages of the present disclosure can be achieved and obtained through the structures pointed out in the specification, the claims, and the drawings. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic structural diagram of a ceramic pump impeller provided by an embodiment of the present disclosure; Figure 2 It is a schematic cross-sectional structure diagram of a ceramic impeller provided by an embodiment of the present disclosure; Figure 3 It is a schematic cross-sectional view of a lock rod and a lock head provided by an embodiment of the present disclosure; Figure 4 It is a schematic internal structure diagram of a hub cartridge provided by an embodiment of the present disclosure. Description of the Reference Numerals

[0029] 1. Impeller body; 11. Liquid inlet; 12. Liquid outlet; 2. Hub cartridge; 21. Connecting shaft hole; 22. Guide strip; 23. Slot; 3. Core head; 31. Slide post; 32. Spring; 33. Rotating groove; 4. Locking assembly; 41. Lock rod; 42. Lock head; 43. Gear; 5. Driving assembly; 51. Driving ring; 511. Jack; 52. Driving rod; 6. Driving shaft; 61. Lock groove; 62. Guide groove. Detailed Embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts fall within the scope of protection of the present disclosure.

[0031] As Figure 1 and Figure 2 shown, Figure 1 It is a schematic structural diagram of a ceramic pump impeller provided by an embodiment of the present disclosure, Figure 2A schematic diagram of the cross-sectional structure of a ceramic impeller provided in an embodiment of the present disclosure. The ceramic impeller includes an impeller body 1, a hub cartridge 2 and a core head 3. The impeller body 1 has a liquid inlet 11 at the axis center and a liquid outlet 12 on the peripheral wall; the hub cartridge 2 is connected to the impeller body 1 and is used to be detachably connected to the drive shaft 6; the core head 3 is rotatably arranged in the impeller body 1 and is located on the side of the hub cartridge 2 facing the liquid inlet 11; a connecting shaft hole 21 is provided on the hub cartridge 2, and a locking assembly 4 is provided inside the hub cartridge 2 for locking the drive shaft 6 in the connecting shaft hole 21, and a driving assembly 5 is provided on the core head 3, and the driving assembly 5 is used to drive the locking assembly 4 to lock and unlock the drive shaft 6 under the rotation of the core head 3.

[0032] In this embodiment, the impeller body 1 is disc-shaped and made of ceramic. As the impeller body 1 rotates, liquid enters from the liquid inlet 11 at the axial center of the impeller body 1, and then is thrown out from the liquid outlet 12 on the peripheral wall of the impeller body 1. There are multiple liquid outlets 12. The hub cartridge 2 is located on the side of the impeller body 1 away from the liquid inlet 11. The core head 3 is located inside the impeller body 1 facing the liquid inlet 11 to receive the liquid entering from the liquid inlet 11, and the core head 3 is connected to the impeller body 1 and the hub cartridge 2 at the same time. The connecting shaft hole 21 is located at the end of the hub cartridge 2 away from the core head 3.

[0033] In some embodiments, see Figure 2 and Figure 3 , Figure 3 The cross-sectional schematic diagram of the locking rod 41 and the locking head 42 provided in the embodiment of the present disclosure. The locking assembly 4 includes the locking rod 41 and the locking head 42. The locking rod 41 is rotatably disposed in the wheel hub cartridge 2, and the rotation axis of the locking rod 41 is parallel to the axis of the drive shaft 6. The locking head 42 is connected to the end of the locking rod 41 away from the core head 3, and a locking groove 61 for the locking head 42 to rotate into is provided on the peripheral wall of the drive shaft 6.

[0034] In this embodiment, there are six locking rods 41, and the locking head 42 is located at the end of the locking rod 41 away from the core head 3, and the locking head 42 extends in a direction perpendicular to the length of the locking rod 41. The bottom of the locking groove 61 on the drive shaft 6 is in an arc shape, but the plane where the groove wall is located passes through the center of the circle of the drive shaft 6, so that after the locking rod 41 rotates in the same direction, the locking head 42 is rotated into the locking groove 61, so that the locking head 42 abuts against the groove wall of the locking groove 61, and the counterclockwise rotation of the drive shaft 6 can drive the wheel hub cartridge 2 to rotate, and then drive the impeller body 1 to rotate counterclockwise, thereby realizing the clamping connection between the locking rod 41 and the drive shaft 6, and then the drive shaft 6 and the wheel hub cartridge 2 are coaxially connected.

[0035] It should be noted that the lock groove 61 is centrally symmetrically arranged along the axis of the drive shaft 6 , and the lock rod 41 and the lock head 42 are also centrally symmetrically arranged along the axis of the drive shaft 6 .

[0036] For example, see Figure 2And Figure 4 , Figure 4 FIG. Figure 4 is a schematic internal structure diagram of the hub cartridge 2 provided by the embodiment of the present disclosure. Guide bars 22 are provided on the hole wall of the connecting shaft hole 21. Guide grooves 62 for the guide bars 22 to slide into are formed on the driving shaft 6. The notch of the locking groove 61 for the locking rod 41 to turn into communicates with one end of the guide groove 62 away from the core head 3. One end of the guide bar 22 away from the core head 3 is in sliding contact with the locking head 42. The extending length of the locking head 42 in the direction perpendicular to the axis of the locking rod 41 is greater than the thickness of the guide bar 22 in the width direction of the locking rod 41.

[0037] In some embodiments, the driving assembly 5 includes a driving ring 51 and a driving rod 52. The driving ring 51 is rotatably arranged in the hub cartridge 2. A plurality of locking rods 41 are all rotatable within the range enclosed by the inner ring of the driving ring 51. One end of the driving rod 52 is connected to the driving ring 51, and the other end is connected to the core head 3. The inner wall of the driving ring 51 has a circle of teeth. A gear 43 is connected to one end of the locking rod 41 away from the locking head 42. The gear 43 meshes with the inner wall of the driving ring 51.

[0038] In this embodiment, the driving ring 51 is rotatably connected to the inner wall of the hub cartridge 2, and the driving ring 51 and the hub cartridge 2 are coaxial. The number of the driving rods 52 is a pair, and they are symmetrically arranged along the axis of the driving ring 51. The driving rods 52 are arranged in parallel with the locking rods 41. The driving rods 52 drive the driving ring 51 to rotate under the rotation of the core head 3. After the driving ring 51 rotates, it drives a plurality of gears 43 to rotate through the circle of teeth on the inner wall, and then drives the locking rods 41 to rotate synchronously, so as to realize the synchronous rotation of the locking heads 42 into the locking grooves 61.

[0039] Exemplarily, the core head 3 is slidably arranged on the hub cartridge 2. The core head 3 slides along the extending direction of the axis of the locking rod 41. A jack 511 is formed on the driving ring 51. The driving rod 52 is slidably inserted into the jack 511 to establish a connection with the driving ring 51.

[0040] For example, a plurality of jacks 511 are evenly spaced along the circumferential direction of the driving ring 51. The direction in which the locking rod 41 drives the locking head 42 to turn into the locking groove 61 is the same as the direction of the restoring force formed by the torsion of the spring 32 acting on the core head 3; so that after the core head 3 slides away from the hub cartridge 2, it drives the driving rod 52 to slide out of the jack 511, and the driving rod 52 can be inserted into the next pair of jacks 511 in the clockwise direction of the driving ring 51 as the core head 3 rotates.

[0041] Exemplarily, a sliding column 31 is connected to one side of the core head 3 facing the hub cartridge 2. A rotating groove 33 for the sliding column 31 to rotate and slide is formed in the hub cartridge 2. The sliding column 31 is rotatably connected in the rotating groove 33. The rotation axis of the sliding column 31 is parallel to the rotation axis of the locking rod 41. A connecting member for connecting the core head 3 and the hub cartridge 2 is provided on the sliding column 31.

[0042] In this embodiment, the sliding column 31 is integrally formed on the core head 3. The core head 3 rotates and slides within the impeller body 1 by rotating and sliding the sliding column 31 within the rotation groove 33. The sliding column 31 is connected to the hub cartridge 2 through a connecting member, thereby connecting the core head 3 and the hub cartridge 2.

[0043] For example, the connecting member includes a spring 32 sleeved on the sliding column 31. The spring 32 has a torsional force, with one end connected to the sliding column 31 and the other end connected to the bottom of the rotation groove 33. It can be seen that after the driving rod 52 disengages from the insertion hole 511 on the driving ring 51, the core head 3 is rotated in the direction of the lock head 42, causing the driving rod 52 to rotate and align with the next insertion hole 511 in the clockwise direction on the driving ring 51. At this time, the pulling force and torsional force of the spring 32 act on the core head 3, resulting in a tendency for the core head 3 to rotate counterclockwise; then the core head 3 is pushed into the hub cartridge 2, causing the sliding column 31, under the pulling force of the spring 32, to drive the core head 3 to reset and insert the driving rod 52 into the next insertion hole 511 in the clockwise direction on the driving ring 51. While establishing a connection between the driving rod 52 and the driving ring 51, the core head 3, under the torsional force of the spring 32, drives the driving rod 52 and the driving ring 51 to have a tendency to rotate counterclockwise, thereby causing the torsional force of the spring 32 to be transmitted to the locking rod 41 through the driving rod 52 and the driving ring 51, and further transmitted to the lock head 42 to continue rotating into the lock groove 61, so that the lock head 42 rotates into the lock groove 61 more firmly.

[0044] Exemplarily, in the sliding direction of the core head 3, when the spring 32 is in its natural state, there is a gap between the core head 3 and the hub cartridge 2. That is to say, when the impeller body 1 is operating, the liquid enters from the liquid inlet 11 and impacts on the core head 3, causing the core head 3 to compress the spring 32 and press against the impeller body 1 and the hub cartridge 2, thereby achieving the sealing of the rotation groove 33.

[0045] For example, a slot 23 is provided in the hub cartridge 2 for the driving rod 52 to be inserted after passing through the insertion hole 511. After the core head 3 abuts against the hub cartridge 2, the driving rod 52 is inserted into the slot 23. After the core head 3 is impacted and pressed against the hub cartridge 2, the core head 3 drives the driving rod 52 to be inserted into the slot 23 to restrict the rotation of the driving rod 52, thereby restricting the rotation of the driving ring 51, the locking rod 41, and the core head 3.

[0046] Based on the above ceramic pump impeller, an embodiment of the present application further provides a method for installing a ceramic pump impeller, which is applied to the above ceramic impeller. The method includes the following steps: S100. Slide the drive shaft into the connecting shaft hole and align the lock groove with the lock head; S102. Rotate the core head to drive the driving ring and the locking rod to rotate, and rotate the lock head on the locking rod into the lock groove; S103. Pull the core head outwards from the impeller body until the driving rod disengages from the driving ring; S104. Rotate the core head in the direction of the lock head until the driving rod is aligned with the jack and then release it. The driving rod is inserted into the jack to establish a connection between the core head and the driving ring.

[0047] Although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A ceramic pump impeller, characterized in that: include: The impeller body has a liquid inlet at the axis and a liquid outlet on the peripheral wall; A hub cartridge, connected to the impeller body and used for detachable connection with the drive shaft; A core head is rotatably disposed in the impeller body and is located on a side of the hub cartridge facing the liquid inlet; The wheel hub cartridge is provided with a connecting shaft hole, and a locking assembly is provided inside the wheel hub cartridge for locking the driving shaft in the connecting shaft hole. The core head is provided with a driving assembly for driving the locking assembly to lock and unlock the driving shaft when the core head rotates.

2. The ceramic pump impeller according to claim 1, characterized in that: The locking assembly comprises: A locking rod is rotatably disposed in the wheel hub cartridge, wherein the rotation axis of the locking rod is parallel to the axis of the drive shaft; The lock head is connected to one end of the lock rod away from the core head, and a lock groove for the lock head to rotate into is provided on the peripheral wall of the drive shaft.

3. The ceramic pump impeller according to claim 2, characterized in that: The drive assembly comprises: A driving ring is rotatably disposed in the wheel hub cartridge, and the locking rods are provided in plurality and all rotate within the range enclosed by the inner ring of the driving ring; A driving rod, one end of which is connected to the driving ring, and the other end of which is connected to the core head; The inner wall of the driving ring is provided with a circle of teeth, and the end of the locking rod away from the locking head is connected with a gear, and the gear is meshed with the inner wall of the driving ring.

4. The ceramic pump impeller according to claim 3, characterized in that: The core head is slidably arranged on the wheel hub cartridge, and the core head slides along the axial extension direction of the locking rod. A plug hole is provided on the driving ring, and the driving rod is slidably inserted into the plug hole to establish connection with the driving ring.

5. The ceramic pump impeller according to claim 4, characterized in that: A sliding post is connected to the side of the core head facing the wheel hub cartridge, a rotation groove is provided in the wheel hub cartridge for the sliding post to rotate and slide, the sliding post is rotatably connected in the rotation groove, the rotation axis of the sliding post is parallel to the rotation axis of the locking rod, a connecting piece connected to the wheel hub cartridge is provided on the sliding post, and the connecting piece is used to connect the core head and the wheel hub cartridge.

6. The ceramic pump impeller according to claim 5, characterized in that: The connecting member comprises a spring sleeved on the sliding column, the spring has a torsion force, one end of the spring is connected to the sliding column, and the other end is connected to the bottom of the rotating groove.

7. The ceramic pump impeller according to claim 6, characterized in that: A plurality of the jacks are evenly spaced along the circumferential direction of the drive ring, and the direction in which the lock rod drives the lock head to rotate into the lock slot is the same as the direction of the restoring force formed by the spring torsion acting on the core head.

8. The ceramic pump impeller according to claim 7, characterized in that: In the sliding direction of the core head, when the spring is in a natural state, there is a gap between the core head and the wheel hub cartridge.

9. The ceramic pump impeller according to claim 8, characterized in that: The wheel hub cartridge is provided with a slot for the drive rod to be inserted into after passing through the insertion hole. After the core head is tightly pressed against the wheel hub cartridge, the drive rod is inserted into the slot.

10. A method for installing a ceramic pump impeller, using the ceramic pump impeller according to any one of claims 1 to 9, characterized in that: The method comprises: Slide the drive shaft into the connecting shaft hole and align the lock slot with the lock head; Rotate the core head to drive the driving ring and the lock rod to rotate, and turn the lock head on the lock rod into the lock groove; Pull the core head toward the impeller body until the drive rod is free from the drive ring; Rotate the core head in the direction of rotation of the lock head until the drive rod is aligned with the socket and then release it. The drive rod is inserted into the socket to establish a connection between the core head and the drive ring.

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