A ceramic pump impeller and a method of mounting the same

Abstract

The present disclosure relates to the technical field of ceramic slurry pump, and provides a ceramic pump impeller and a mounting method thereof. The impeller comprises an impeller body, a hub cartridge and a core head. The shaft center of the impeller body has a liquid inlet, and the peripheral wall has a liquid outlet; the hub cartridge is connected with the impeller body and is used for detachable connection with a driving shaft; the core head is rotationally arranged in the impeller body and is located on the side of the hub cartridge facing the liquid inlet; the hub cartridge is provided with a connecting shaft hole, and the hub cartridge is internally provided with a locking assembly for locking the driving shaft in the connecting shaft hole; the core head is provided with a driving assembly, and the driving assembly is used for driving the locking assembly to lock and unlock the driving shaft under the rotation of the core head. In this way, the locking head in the hub cartridge is quickly connected with the driving shaft and quickly detached through the rotation and sliding of the core head, the connection difficulty of the driving shaft and the impeller is reduced, and the convenience of the connection of the driving shaft and the impeller is improved.

Description

Technical Field

[0001] This disclosure belongs to the field of ceramic slurry pump technology, and particularly relates to a ceramic pump impeller and its installation method. Background Technology

[0002] Ceramics are a material 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, typically operate in corrosive and high-temperature environments and are mainly used to transport various mineral slurries, tailings slurries, coal slurries, and corrosive liquids.

[0003] Traditional slurry pumps use ceramic as the pump body, specifically silicon carbide ceramic. The impeller in a slurry pump is also currently made of ceramic, conveying various liquid materials during rotation. However, connecting the impeller to the drive shaft presents challenges due to the ceramic material, making the connection between the drive shaft and impeller quite complicated. Summary of the Invention

[0004] To address the aforementioned issues, this disclosure provides a ceramic pump impeller and its installation method. By rotating and sliding the impeller head, the locking head inside the hub sleeve can quickly establish a connection with the drive shaft and be quickly disassembled, reducing the difficulty of connecting the drive shaft and the impeller and improving the ease of connection between the drive shaft and the impeller.

[0005] The first aspect of this disclosure provides a ceramic pump impeller, comprising: an impeller body having an inlet at the shaft center and an outlet on the peripheral wall; a hub sleeve connected to the impeller body and detachably connected to a drive shaft; and a core head rotatably disposed within the impeller body and located on the side of the hub sleeve facing the inlet; the hub sleeve having a connecting shaft hole, and a locking assembly inside the hub sleeve for locking the drive shaft within the connecting shaft hole; and a drive assembly on the core head for driving the locking assembly to lock and unlock the drive shaft under the rotation of the core head.

[0006] With this configuration, when installing the impeller on the ceramic pump, the impeller hub sleeve is fitted onto the drive shaft, allowing the drive shaft to enter the hub sleeve. Then, the mandrel head is rotated at the inlet to activate the drive assembly. This drive assembly then activates the locking assembly to lock the drive shaft, achieving a quick locking connection between the impeller and the drive shaft. When it is necessary to remove the impeller, the mandrel head is rotated to activate the drive assembly, and the locking assembly releases the impeller from the drive shaft. This allows the lock in the hub sleeve to quickly establish and disassemble with the drive shaft, reducing the difficulty of connecting the drive shaft and the impeller and improving the ease of connection between the drive shaft and the impeller.

[0007] In some embodiments, the locking assembly includes: a locking rod rotatably disposed within the hub sleeve, the rotation axis of the locking rod being parallel to the axis of the drive shaft; and a locking head connected to the end of the locking rod away from the core head, wherein a locking groove is provided on the peripheral wall of the drive shaft for the locking head to rotate into.

[0008] With this configuration, when the impeller is locked to the drive shaft, the drive assembly is activated by rotating the core head. The drive assembly drives the locking rod to rotate, which in turn drives the lock head to rotate. The lock head rotates into the locking groove on the peripheral wall of the drive shaft, locking the drive shaft and the hub sleeve, and thus locking the drive shaft and the impeller body, completing the locking of the impeller and drive shaft. To unlock, simply reverse the core head; the drive assembly drives the locking rod and lock head to rotate in reverse, causing the lock head to rotate out of the locking groove, completing the locking of the impeller and drive shaft.

[0009] In some embodiments, the drive assembly includes: a drive ring rotatably disposed within the hub sleeve; a locking rod having multiple locking rods, all rotatable 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; the inner wall of the drive ring having a ring of teeth; and a gear connected to the end of the locking rod away from the lock head, the gear meshing with the inner wall of the drive ring.

[0010] With this configuration, when the core head rotates, it drives the drive rod to rotate, which in turn drives the drive ring to rotate. The drive ring, through a ring of teeth on its inner ring, drives a gear to rotate, which in turn drives the locking rod to rotate. This causes the lock head to rotate in the same direction as the drive ring, thus locking the hub retainer and drive shaft. To unlock, simply reverse the core head, and the drive rod, drive ring, locking rod, and lock head will also reverse, allowing the lock head to rotate out of the lock groove and release the hub retainer and drive shaft.

[0011] In some embodiments, the core head is slidably disposed on the hub sleeve, the core head slides along the axial extension direction of the locking rod, the drive ring has an insertion hole, and the drive rod establishes a connection with the drive ring by sliding through the insertion hole.

[0012] With this configuration, when the drive ring needs to be inspected, the core head is pulled towards the liquid inlet, causing the drive rod to slide out of the insertion hole along with the core head, thus separating the drive rod and the drive ring. This makes it easier to expose the drive ring at the hub retainer for inspection. The insertion hole only restricts the relative rotation of the drive rod and the drive ring, so that the drive rod can be reinserted into the insertion hole to drive the drive ring to rotate.

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

[0014] With this configuration, the rotation and sliding of the sliding column within the rotating groove allow the core head to rotate and slide on the hub chuck. Thus, with the connection of the connecting piece, the core head and the hub chuck are always kept connected, preventing the core head from completely detaching from the hub chuck.

[0015] In some embodiments, the connector includes a spring sleeved on the slide column, the spring having torque and being connected at one end to the slide column and at the other end to the bottom of the rotating groove.

[0016] This configuration allows the spring force and torque to be supplied to the sliding column, enabling the core head to rotate and slide on the hub chuck, and to establish a connection with the hub chuck.

[0017] In some embodiments, multiple insertion holes are evenly spaced along the circumferential direction of the drive ring, and 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 spring torque acting on the core head.

[0018] With this setup, when the core head rotates, it drives the drive rod and drive ring to rotate, causing the lock head to enter the lock groove. At this point, pulling the core head towards the inlet ensures that the core head remains connected to the hub retainer under the spring's connection. Once the drive rod disengages from the insertion hole on the drive ring, rotating the core head in the direction the lock head rotates aligns the drive rod with the next clockwise insertion hole on the drive ring. The spring's tension and torque then act on the core head, causing it to rotate counter-clockwise. Finally, pushing the core head into the hub retainer allows the sliding... Under the tension of the spring, the core head is driven to return to its original position, and the drive rod is inserted into the next clockwise insertion hole on the drive ring. At the same time, the drive rod and drive ring are connected. Under the torque of the spring, the core head drives the drive rod and drive ring to rotate counterclockwise. This causes the spring torque to be transmitted to the lock rod through the drive rod and drive ring, and then to the lock head to continue rotating into the lock groove. This makes the lock head more firmly inserted into the lock groove, strengthens the locking stability between the lock head and the drive shaft, and thus strengthens the connection stability between the hub chuck and the drive shaft.

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

[0020] This design ensures that when the ceramic pump is running, the liquid enters from the inlet and impacts the impeller head, causing the impeller head to be thrust towards the hub sleeve. This seals the gap between the impeller head, the impeller body, and the hub sleeve, reducing the amount of liquid entering the rotating groove.

[0021] In some embodiments, the hub retainer has a slot for the drive rod to pass through the insertion hole and be inserted. After the core head is pressed against the hub retainer, the drive rod is inserted into the slot.

[0022] With this configuration, when the core head is pushed towards the hub retainer, the drive rod slides towards the hub retainer along with the core head, causing the end of the drive rod to insert into the slot, thereby restricting the rotation of the drive rod, and in turn restricting the rotation of the drive ring, locking rod and core head. This not only further strengthens the stability of the lock head entering the lock groove, but also makes the gap between the core head and the impeller body more stable, thereby strengthening the sealing of the core head locking the drive ring and blocking the rotation groove.

[0023] The second aspect of this 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 a drive shaft into a connecting shaft hole and aligning the locking groove with a locking head; rotating the core head to drive the drive ring and locking rod to rotate, turning the locking head on the locking rod into the locking groove; pulling the core head outwards from the impeller body until the drive rod disengages from the drive ring; rotating the core head in the direction of the locking head's rotation until the drive rod aligns with the insertion hole and then releasing it, inserting the drive rod into the insertion hole to establish a connection between the core head and the drive ring.

[0024] With this setup, the drive shaft and hub clamp can be quickly disassembled and installed using the above method. The operation is convenient and simple, requiring no additional tools, which helps save time on the installation and maintenance of ceramic pump impellers.

[0025] Compared with the prior art, this disclosure has the following advantages:

[0026] (1) The drive ring, through the gear engagement of the gear ring and the locking rod, enables the hub sleeve to be quickly connected to the drive shaft and quickly disassembled under the rotation of the core head, reducing the difficulty of connecting the drive shaft and the impeller and improving the ease of connecting the drive shaft and the impeller.

[0027] (2) The rotation and sliding setting of the core head not only strengthens the stability of the lock head when it is turned into the lock groove, but also seals the rotation groove;

[0028] (3) Inserting the drive rod into the slot further enhances the stability of the lock head turning into the lock groove and the stability of the core head blocking the rotating groove.

[0029] Other features and advantages of this disclosure will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the disclosure. The objects and other advantages of this disclosure may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of a ceramic pump impeller structure provided in an embodiment of the present disclosure;

[0032] Figure 2 A cross-sectional structural schematic diagram of a ceramic impeller provided in an embodiment of this disclosure;

[0033] Figure 3 A cross-sectional schematic diagram of the locking bar and locking head provided in an embodiment of this disclosure;

[0034] Figure 4 This is a schematic diagram of the internal structure of the wheel hub retainer provided in an embodiment of this disclosure.

[0035] Explanation of reference numerals in the attached figures

[0036] 1. Impeller body; 11. Inlet; 12. Outlet; 2. Hub retainer; 21. Connecting shaft hole; 22. Guide bar; 23. Slot; 3. Core head; 31. Sliding column; 32. Spring; 33. Rotating groove; 4. Locking assembly; 41. Locking rod; 42. Lock head; 43. Gear; 5. Drive assembly; 51. Drive ring; 511. Insertion hole; 52. Drive rod; 6. Drive shaft; 61. Lock groove; 62. Guide groove. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0038] like Figure 1 and Figure 2 As shown, Figure 1This is a schematic diagram of a ceramic pump impeller structure provided in an embodiment of the present disclosure. Figure 2 This is a cross-sectional structural diagram of the ceramic impeller provided in this embodiment. The ceramic impeller includes an impeller body 1, a hub retainer 2, and a core head 3. The impeller body 1 has a liquid inlet 11 at its axial center and a liquid outlet 12 on its peripheral wall; the hub retainer 2 is connected to the impeller body 1 and is used for detachable connection with the drive shaft 6; the core head 3 is rotatably disposed inside the impeller body 1 and is located on the side of the hub retainer 2 facing the liquid inlet 11; the hub retainer 2 is provided with a connecting shaft hole 21, and a locking assembly 4 is provided inside the hub retainer 2 for locking the drive shaft 6 in the connecting shaft hole 21; the core head 3 is provided with a driving assembly 5, which is used to drive the locking assembly 4 to lock and unlock the drive shaft 6 when the core head 3 rotates.

[0039] In this embodiment, the impeller body 1 is disc-shaped and made of ceramic. As the impeller body 1 rotates, liquid enters from the inlet 11 at the shaft center of the impeller body 1 and is then ejected from the outlet 12 on the peripheral wall of the impeller body 1. There are multiple outlets 12. The hub retainer 2 is located on the side of the impeller body 1 opposite to the inlet 11. The core head 3 is located inside the impeller body 1, directly opposite the inlet 11, to receive the liquid entering from the inlet 11, and the core head 3 is connected to both the impeller body 1 and the hub retainer 2. The connecting shaft hole 21 is located at the end of the hub retainer 2 opposite to the core head 3.

[0040] In some embodiments, see Figure 2 and Figure 3 , Figure 3 This is a cross-sectional view of the locking rod 41 and the locking head 42 provided in this embodiment. The locking assembly 4 includes the locking rod 41 and the locking head 42. The locking rod 41 is rotatably disposed within the hub retainer 2, and the axis of rotation 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 is provided on the peripheral wall of the drive shaft 6 for the locking head 42 to rotate into.

[0041] 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 arc-shaped, but the plane where the groove wall is located passes through the center 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. The counterclockwise rotation of the drive shaft 6 can drive the hub retainer 2 to rotate, and then drive the impeller body 1 to rotate counterclockwise, thereby realizing the locking of the locking rod 41 and the drive shaft 6, and thus coaxially connecting the drive shaft 6 and the hub retainer 2.

[0042] 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 lock head 42 are also centrally symmetrically arranged along the axis of the drive shaft 6.

[0043] For example, see Figure 2 and Figure 4 , Figure 4 This is a schematic diagram of the internal structure of the hub retainer 2 provided in this embodiment. A guide strip 22 is provided on the wall of the connecting shaft hole 21. A guide groove 62 is provided on the drive shaft 6 for the guide strip 22 to slide into. The slot of the locking groove 61 into which the locking rod 41 rotates is connected to the end of the guide groove 62 away from the core head 3. The end of the guide strip 22 away from the core head 3 slides against the locking head 42. The extension 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 strip 22 in the width direction of the locking rod 41.

[0044] In some embodiments, the drive assembly 5 includes a drive ring 51 and a drive rod 52. The drive ring 51 is rotatably disposed within the hub retainer 2. Multiple locking rods 41 rotate within the area enclosed by the inner ring of the drive ring 51. One end of the drive rod 52 is connected to the drive ring 51, and the other end is connected to the core head 3. The inner wall of the drive ring 51 has a ring of teeth. A gear 43 is connected to the end of the locking rod 41 away from the lock head 42. The gear 43 meshes with the inner wall of the drive ring 51.

[0045] In this embodiment, the drive ring 51 is rotatably connected to the inner wall of the hub retainer 2, and the drive ring 51 and the hub retainer 2 are coaxial. There is a pair of drive rods 52, which are symmetrically arranged along the axis of the drive ring 51, and the drive rods 52 are parallel to the locking rod 41. The drive rods 52 drive the drive ring 51 to rotate under the rotation of the core head 3. After the drive ring 51 rotates, it drives multiple gears 43 to rotate through a ring of teeth on the inner wall, thereby driving the locking rod 41 to rotate synchronously, so that the lock head 42 can be synchronously rotated into the lock groove 61.

[0046] For example, the core head 3 is slidably disposed on the hub sleeve 2, and the core head 3 slides along the axial extension direction of the locking rod 41. The drive ring 51 is provided with an insertion hole 511, and the drive rod 52 establishes a connection with the drive ring 51 by sliding through the insertion hole 511.

[0047] For example, multiple insertion holes 511 are evenly spaced along the circumferential direction of the drive ring 51. The direction in which the locking rod 41 drives the lock head 42 to rotate into the lock groove 61 is the same as the direction of the restoring force formed by the torque of the spring 32 acting on the core head 3; so that after the core head 3 slides away from the wheel hub sleeve 2, it drives the drive rod 52 to slide out of the insertion hole 511, and as the core head 3 rotates, the drive rod 52 can be inserted into the next pair of insertion holes 511 in the clockwise direction of the drive ring 51.

[0048] For example, a sliding pin 31 is connected to the side of the core head 3 facing the hub retainer 2. A rotating groove 33 is provided inside the hub retainer 2 for the sliding pin 31 to rotate and slide. The sliding pin 31 is rotatably connected within the rotating groove 33. The rotation axis of the sliding pin 31 is parallel to the rotation axis of the locking rod 41. A connecting member is provided on the sliding pin 31 for connecting the core head 3 and the hub retainer 2.

[0049] 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 the sliding column 31 rotating and sliding within the rotating groove 33. The sliding column 31 is connected to the hub retainer 2 via a connector, thereby connecting the core head 3 and the hub retainer 2.

[0050] For example, the connector includes a spring 32 sleeved on the slide column 31. The spring 32 has torque and is connected at one end to the slide column 31 and at the other end to the bottom of the rotating groove 33. Therefore, after the drive rod 52 disengages from the insertion hole 511 on the drive ring 51, the core head 3 rotates in the direction of the lock head 42, so that the drive rod 52 rotates to align with the next insertion hole 511 on the drive ring 51 in the clockwise direction. At this time, the tension and torque of the spring 32 act on the core head 3, causing the core head 3 to rotate counterclockwise. Then, the core head 3 is pushed into the hub sleeve 2, so that the slide column 31, under the tension of the spring 32, drives the core head 3 to return to its original position, and inserts the drive rod 52 into the next insertion hole 511 on the drive ring 51 in the clockwise direction. At the same time, while establishing a connection between the drive rod 52 and the drive ring 51, the core head 3, under the torque of the spring 32, drives the drive rod 52 and the drive ring 51 to rotate counterclockwise. This allows the torque of the spring 32 to be transmitted to the lock rod 41 through the drive rod 52 and the drive ring 51, and then 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 securely.

[0051] For example, when the spring 32 is in its natural state in the sliding direction of the core head 3, there is a gap between the core head 3 and the hub retainer 2. That is, when the impeller body 1 is running, the liquid enters from the inlet 11 and impacts the core head 3, causing the core head 3 to compress the spring 32 and fit tightly against the impeller body 1 and the hub retainer 2, thereby sealing the rotating groove 33.

[0052] For example, the hub retainer 2 has a slot 23 for the drive rod 52 to pass through the insertion hole 511 and be inserted. After the core head 3 is pressed against the hub retainer 2, the drive rod 52 is inserted into the slot 23. After the core head 3 is impacted and pressed against the hub retainer 2, the core head 3 drives the drive rod 52 to be inserted into the slot 23, thereby restricting the rotation of the drive rod 52, and thus restricting the rotation of the drive ring 51, the locking rod 41 and the core head 3.

[0053] Based on the above-described ceramic pump impeller, this application embodiment also provides a ceramic pump impeller installation method, applied to the above-described ceramic impeller, the method including the following steps:

[0054] S100. Slide the drive shaft into the connecting shaft hole and align the lock groove with the lock head;

[0055] S102. Rotate the core head to drive the drive ring and lock bar to rotate, and turn the lock head on the lock bar into the lock groove;

[0056] S103. Pull the core head outwards toward the impeller body until the drive rod disengages from the drive ring;

[0057] S104. Rotate the core head in the direction of the lock head until the drive rod is aligned with the socket, then release it. Insert the drive rod into the socket to establish a connection between the core head and the drive ring.

[0058] Although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and such modifications or substitutions 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 shaft center and a liquid outlet on the peripheral wall; A hub retainer is connected to the impeller body and is used for detachable connection with the drive shaft; The core head is rotatably mounted in the impeller body and located on the side of the hub sleeve facing the liquid inlet; The hub retainer is provided with a connecting shaft hole, and a locking component is provided inside the hub retainer for locking the drive shaft in the connecting shaft hole. A driving component is provided on the core head, and the driving component is used to drive the locking component to lock and unlock the drive shaft when the core head rotates. The locking component includes: A locking rod is rotatably mounted inside the hub sleeve, and the rotation axis of the locking rod is parallel to the axis of the drive shaft; A lock head is connected to the end of the lock rod away from the core head; a lock groove is formed on the peripheral wall of the drive shaft for the lock head to rotate into; the drive assembly includes: A drive ring is rotatably disposed within the hub sleeve, and the locking rod has multiple rods, all of which rotate within the range enclosed by the inner ring of the drive ring; The drive rod is connected at one end to the drive ring and at the other end to the core head; The inner wall of the drive ring has a ring of teeth, and the end of the locking rod away from the lock head is connected to a gear, which meshes with the inner wall of the drive ring; the core head is slidably disposed on the hub sleeve, and the core head slides along the axial extension direction of the locking rod; the drive ring has an insertion hole, and the drive rod establishes a connection with the drive ring by sliding through the insertion hole.

2. The ceramic pump impeller according to claim 1, characterized in that, The core head is connected to a sliding column on the side facing the hub retainer. The hub retainer has a rotating groove for the sliding column to rotate and slide. The sliding column is rotatably connected to the rotating groove. The rotation axis of the sliding column is parallel to the rotation axis of the locking rod. The sliding column is provided with a connector for connecting the core head and the hub retainer.

3. The ceramic pump impeller according to claim 2, characterized in that, The connector includes a spring sleeved on the slide column, the spring having torque, one end of which is connected to the slide column and the other end of which is connected to the bottom of the rotating groove.

4. The ceramic pump impeller according to claim 3, characterized in that, The insertion holes are evenly spaced along the circumferential direction of the drive 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 spring torque acting on the core head.

5. The ceramic pump impeller according to claim 4, characterized in that, In the sliding direction of the core head, when the spring is in its natural state, there is a gap between the core head and the hub sleeve.

6. The ceramic pump impeller according to claim 5, characterized in that, The hub retainer has a slot for the drive rod to pass through the insertion hole and be inserted. After the core head is pressed against the hub retainer, the drive rod is inserted into the slot.

7. A method for installing a ceramic pump impeller, using the ceramic pump impeller as described in any one of claims 1-6, characterized in that, The method includes: Slide the drive shaft into the connecting shaft hole and align the lock groove with the lock head; Rotate the core head to drive the drive ring and lock bar to rotate, and turn the lock head on the lock bar into the lock groove; Pull the core head outwards toward the impeller body until the drive rod disengages from the drive ring; Rotate the core head in the direction of the lock head until the drive rod is aligned with the socket, then release it. Insert the drive rod into the socket to establish a connection between the core head and the drive ring.

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