A grinding device for facilitating the surface grinding of the rotating surface of an acid-resistant pump impeller

Abstract

The present invention relates to the technical field of grinding devices, and specifically relates to a grinding device for facilitating the surface grinding of the rotating surface of an acid-resistant pump impeller. The grinding device includes a machine body. A grinding and loading component is arranged inside the machine body, and the impeller is ground inside the grinding and loading component. An impeller loading mechanism is installed on the grinding and loading component to support the impeller during grinding. An impeller positioning component is arranged on the impeller loading mechanism to limit the impeller through the impeller positioning component so that it is accurately placed on the impeller loading mechanism. When placing the impeller, the rotating carrier plate is above the grinding and loading cylinder, which facilitates the placement of the impeller. At this time, only multiple impellers need to be placed on the rotating carrier plate in sequence, and then the hydraulic rod is started to drive the impeller into the grinding and loading cylinder, and at the same time, the automatic fixation of the impeller is realized, which is very convenient, greatly improves the working efficiency of impeller clamping, and facilitates the work of the staff.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding devices, and particularly to a grinding device for facilitating the surface grinding of the rotating surface of an acid-resistant pump impeller. Background Art

[0002] When producing an acid-resistant pump impeller, it is necessary to grind it to ensure the smoothness of its surface, thereby ensuring the production quality of the acid-resistant pump impeller. The blades of the acid-resistant pump impeller are designed in a curved shape. Therefore, when grinding the rotating surface of the impeller, a abrasive flow polishing machine is usually used for grinding. The abrasive flow polishing machine mainly conveys the mixture of abrasive and viscous fluid to the area to be polished of the workpiece through a high-pressure pump. The fluid drives the abrasive to interact with the surface of the workpiece, generating micro-cutting and frictional forces, and gradually removing the microscopic protrusions and burrs on the surface of the material to make the surface smoother. It has a natural profiling ability and can fully fit the curved surface of the impeller for uniform polishing. The abrasive flow polishing machine can grind multiple impellers simultaneously, but it still has certain deficiencies. That is, when grinding the impeller, it is necessary to fix it, and at this time, it is necessary to operate the fixture one by one to fix the impeller. The operation is relatively troublesome, and the fixture operation is not convenient enough, and it cannot realize the convenient installation and disassembly of the impeller. Furthermore, when grinding multiple impellers, the clamping efficiency of the impeller is relatively low. Summary of the Invention

[0003] The purpose of the present invention is to provide a grinding device for facilitating the surface grinding of the rotating surface of an acid-resistant pump impeller to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A grinding device for facilitating the surface grinding of the rotating surface of an acid-resistant pump impeller, including a machine body. A grinding and loading component is arranged inside the machine body, and the impeller is ground inside the grinding and loading component;

[0006] An impeller loading mechanism is installed on the grinding and loading component to support the impeller during grinding;

[0007] An impeller positioning component is arranged on the impeller loading mechanism to limit the impeller so that it can be accurately placed on the impeller loading mechanism;

[0008] An impeller fixing component is also arranged on the impeller loading mechanism to fix the impeller, and when the impeller loading mechanism moves, it drives the impeller fixing component to move.

[0009] Preferably, the grinding and loading component is a grinding and loading cylinder, and the grinding and loading cylinder is fixedly arranged inside the machine body.

[0010] Preferably, a mating rack is fixedly arranged inside the grinding carrier cylinder, and the impeller carrier mechanism is driven by the mating rack.

[0011] Preferably, the impeller carrier mechanism includes a hydraulic rod, a grinding carrier ring, and a rotating carrier plate, and the hydraulic rod is fixedly connected to the grinding carrier ring.

[0012] Preferably, the hydraulic rod drives the grinding carrier ring to move up and down, and the rotating carrier plate is installed on the grinding carrier ring;

[0013] When the grinding carrier ring moves up and down, the mating rack drives the rotating carrier plate to rotate.

[0014] Preferably, the impeller positioning assembly includes a first limiting plate and a second limiting plate. The first limiting plate is arranged on both sides of the rotating carrier plate to limit the impeller from both sides.

[0015] Preferably, the second limiting plate supports and limits the impeller from the lower side when the rotating carrier plate is in an inclined state.

[0016] Preferably, the impeller fixing assembly includes a driving connecting block, a driving frame, and an adapter carrier plate. Relative movement occurs between the driving connecting block and the rotating carrier plate to drive the driving frame to move.

[0017] Preferably, the driving frame drives the adapter carrier plate to move, and the impeller is fixed by the adapter carrier plate.

[0018] Preferably, the adapter carrier plate can drive the first limiting plate to move, so that the first limiting plate is separated from the impeller. The driving frame can also drive the second limiting plate to move, and the second limiting plate is driven to tightly press the impeller.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is reasonably arranged and has strong functionality, with the following advantages:

[0020] 1. When placing the impeller, the rotating carrier plate is above the grinding carrier cylinder, which is convenient for placing the impeller. At this time, only need to place multiple impellers on the rotating carrier plate in sequence, and then start the hydraulic rod to drive the impeller into the grinding carrier cylinder, and at the same time realize the automatic fixing of the impeller. It can achieve the synchronous fixing of multiple impellers, which is very convenient, greatly improving the working efficiency of impeller clamping and facilitating the work of the staff.

[0021] 2. When placing the impeller, position the impeller through the first limiting plate and the second limiting plate so that it is accurately located on the inclined rotating carrier plate. The rotating carrier plate is inclined, so that after the impeller is polished, as the rotating carrier plate moves upward, it can be in an inclined state again. This facilitates the smooth return of the fluid and abrasive accumulated on the impeller and the rotating carrier plate to the grinding carrier cylinder. When the rotating carrier plate moves downward, it will rotate to a horizontal state, so as to provide good support and fixation for the impeller and ensure the stability of the impeller during the grinding process.

[0022] 3. When the rotating carrier plate moves downward, as it rotates, it will drive the connecting carrier plate to move downward relative to the rotating carrier plate. In this way, the initial fixation of the impeller can be achieved through the generated negative pressure to ensure its stability during the downward movement. As the rotating carrier plate continues to move downward, the negative pressure increases to enhance the adsorption force on the impeller. At the same time, it will also drive the first limiting plate to move downward relative to the rotating carrier plate and separate from the impeller. At the same time, it will also drive the second limiting plate to move away from the impeller, so that the two no longer contact the impeller, avoiding hindering the grinding of the impeller. And as the second limiting plate moves, it will drive the arc-shaped pressing plate to contact the inner wall of the impeller shaft hole, tightly pressing against the inner wall of the shaft hole, playing an auxiliary role in fixing the impeller and fully ensuring the firmness of the impeller fixation. Brief Description of the Drawings

[0023] Figure 1 It is an assembly schematic diagram of the whole body.

[0024] Figure 2 It is an assembly schematic diagram of the interior of the body.

[0025] Figure 3 It is an assembly schematic diagram of the grinding carrier cylinder.

[0026] Figure 4 It is an assembly schematic diagram of the grinding carrier cylinder and the grinding carrier ring.

[0027] Figure 5 It is an assembly schematic diagram of the grinding carrier ring.

[0028] Figure 6 It is a first perspective schematic diagram of the assembly of the rotating carrier plate.

[0029] Figure 7 It is a second perspective schematic diagram of the assembly of the rotating carrier plate.

[0030] Figure 8 It is a first perspective structural schematic diagram of the rotating carrier plate.

[0031] Figure 9 It is a second perspective structural schematic diagram of the rotating carrier plate.

[0032] Figure 10Schematic assembly diagram of the driving connection block, driving frame and connecting carrier plate.

[0033] Figure 11 Schematic assembly diagram of the connecting carrier plate and the first limiting plate.

[0034] Figure 12 Schematic structural diagram of the second limiting plate.

[0035] In the figure: 1, body; 2, hydraulic rod; 3, grinding bearing cylinder; 31, support guide hole; 32, mating rack; 4, grinding bearing ring; 41, extension connecting plate; 42, support guide rod; 43, mating support; 44, lower insertion channel; 45, installation carrier column; 46, assembly carrier hole; 5, rotating carrier plate; 51, movable channel; 511, insertion cavity; 52, lower bearing plate; 53, lower bearing rod; 54, bearing block; 55, limiting channel; 56, installation carrier rod; 561, bearing; 562, gear; 57, bearing rod; 571, limiting baffle; 58, mating carrier cavity; 581, insertion carrier hole; 59, inner slot; 591, support inner rod; 6, driving connection block; 61, mating wheel; 62, connecting channel; 63, connecting spring; 64, first connecting rod; 7, driving frame; 71, mating carrier strip; 72, support channel; 73, second connecting rod; 8, connecting carrier plate; 81, connecting insertion hole; 82, bearing plate strip; 83, insertion mating rod; 84, mating cavity plate; 9, first limiting plate; 91, connecting carrier plate; 92, connecting insertion plate; 101, second limiting plate; 102, bearing channel; 103, lower convex plate; 104, insertion carrier strip; 105, arc surface pressing plate; 106, mating spring. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0037] The present invention provides a technical solution:

[0038] Such as Figure 1 , Figure 2 and Figure 3As shown in the figure, a grinding device for facilitating the surface grinding of the rotating surface of the impeller of an acid-resistant pump includes a machine body 1. A grinding and loading component is arranged inside the machine body 1, and the impeller is ground inside the grinding and loading component. An impeller loading mechanism is installed on the grinding and loading component to support the impeller during grinding. An impeller positioning component is arranged on the impeller loading mechanism to limit the impeller through the impeller positioning component so that it is accurately placed on the impeller loading mechanism. An impeller fixing component is also arranged on the impeller loading mechanism to fix the impeller, and when the impeller loading mechanism moves, it drives the impeller fixing component to move.

[0039] As Figure 2 and Figure 4 shown in the figure, the grinding and loading component is a grinding and loading cylinder 3. The grinding and loading cylinder 3 is fixedly arranged inside the machine body 1. A mating rack 32 is fixedly arranged inside the grinding and loading cylinder 3 to drive the impeller loading mechanism through the mating rack 32, and a support guide hole 31 is circumferentially opened at the upper end of the grinding and loading cylinder 3.

[0040] As Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown in the figure, the impeller loading mechanism includes a hydraulic rod 2, a grinding and loading ring 4, and a rotating carrier plate 5. The hydraulic rod 2 is fixedly connected to the grinding and loading ring 4. The hydraulic rod 2 drives the grinding and loading ring 4 to move up and down. The rotating carrier plate 5 is installed on the grinding and loading ring 4. When the grinding and loading ring 4 moves up and down, the mating rack 32 drives the rotating carrier plate 5 to rotate. The hydraulic rod 2 is fixedly installed inside the machine body 1. An extension connecting plate 41 is fixedly arranged on the grinding and loading ring 4, and the extension connecting plate 41 is fixedly connected to the hydraulic rod 2.

[0041] As Figure 4 shown in the figure, support guide rods 42 are circumferentially and fixedly arranged on the grinding and loading ring 4. The support guide rods 42 are inserted into the support guide holes 31. The cooperation between the support guide rods 42 and the support guide holes 31 realizes the limitation of the grinding and loading ring 4. Support brackets 43 are also circumferentially and fixedly arranged on the grinding and loading ring 4. Lower insertion channels 44 are opened on the support brackets 43, and mounting carrier columns 45 are symmetrically and fixedly arranged on the support brackets 43. Assembly carrier holes 46 are opened on the mounting carrier columns 45.

[0042] As Figure 3 、 Figure 8 and Figure 9As shown, an active channel 51 is provided on the rotating carrier plate 5. Plugging cavities 511 are symmetrically arranged on both sides of the active channel 51. A lower bearing plate 52 is fixedly arranged at the lower port of the active channel 51. A lower bearing rod 53 is fixedly arranged on the lower bearing plate 52. A bearing block 54 is fixedly arranged at one end of the rotating carrier plate 5. A mounting carrier rod 56 is fixedly arranged on the bearing block 54. A bearing 561 is sleeved on the mounting carrier rod 56. The bearing 561 is installed in the assembly bearing hole 46. A gear 562 is also fixedly arranged on the mounting carrier rod 56. The gear 562 meshes with the mating rack 32. A limiting channel 55 is opened on the bearing block 54. Bearing rods 57 are symmetrically and fixedly arranged on the rotating carrier plate 5. Limiting baffles 571 are fixedly arranged on the bearing rods 57. A mating carrier cavity 58 is circumferentially opened on the rotating carrier plate 5. Plugging carrier holes 581 are opened on the bottom surface of the mating carrier cavity 58. Inner slots 59 are circumferentially opened on the lower end surface of the rotating carrier plate 5. Support inner rods 591 are fixedly arranged in the inner slots 59.

[0043] As Figure 6 , Figure 11 and Figure 12 As shown, the impeller positioning assembly includes a first limiting plate 9 and a second limiting plate 101. The second limiting plate 101 is arranged on both sides of the rotating carrier plate 5 to limit the impeller from both sides. The first limiting plate 9 supports and limits the impeller from the lower side when the rotating carrier plate 5 is in an inclined state. The first limiting plate 9 is plugged in the limiting channel 55. A connecting carrier plate 91 is fixedly arranged at the lower end of the first limiting plate 9. A connecting plug plate 92 is fixedly arranged on the connecting carrier plate 91. A bearing channel 102 is opened on the second limiting plate 101. A bearing rod 57 is plugged in the bearing channel 102. A mating spring 106 is sleeved on the bearing rod 57. The two ends of the mating spring 106 are respectively fixed on the second limiting plate 101 and the limiting baffle 571. Lower convex plates 103 are symmetrically and fixedly arranged at the lower end of the second limiting plate 101. Plugging carrier strips 104 are also symmetrically and fixedly arranged on the second limiting plate 101. The plugging carrier strips 104 are plugged in the plugging cavities 511. An arc-shaped pressing plate 105 is fixedly arranged on the plugging carrier strips 104. The arc-shaped pressing plate 105 is in the active channel 51 and partially protrudes above the active channel 51.

[0044] As Figure 6 , Figure 7 and Figure 10As shown, the impeller fixing assembly includes a driving connecting block 6, a driving frame 7, and a connecting carrier plate 8. Relative movement between the driving connecting block 6 and the rotating carrier plate 5 drives the movement of the driving frame 7, and the driving frame 7 drives the connecting carrier plate 8 to move. The impeller is fixed by the connecting carrier plate 8. At the upper and lower ends of the driving connecting block 6, mating wheels 61 are fixedly arranged. The mating wheels 61 are in contact with the mating support frame 43. A connecting channel 62 is formed in the driving connecting block 6. A lower bearing rod 53 is inserted into the connecting channel 62. A connecting spring 63 is sleeved on the lower bearing rod 53. The two ends of the connecting spring 63 are respectively fixed on the lower bearing plate 52 and the driving connecting block 6.

[0045] A first connecting rod 64 is hinged on the driving connecting block 6. The upper end of the first connecting rod 64 is hinged to the driving frame 7. At the upper end of the driving frame 7, mating carrier strips 71 are symmetrically and fixedly arranged. The mating carrier strips 71 are inserted into the inner slot 59. A support channel 72 is formed in the mating carrier strips 71. A support inner rod 591 is inserted into the support channel 72. A second connecting rod 73 is also hinged on the driving frame 7. The lower end of the second connecting rod 73 is hinged to the connecting carrier plate 8. An engagement jack 81 is formed in the connecting carrier plate 8. A carrier plate strip 82 is fixedly arranged on the connecting carrier plate 8. An insertion mating rod 83 is fixedly arranged on the carrier plate strip 82. The insertion mating rod 83 passes through the insertion hole 581 and is inserted into the mating cavity 58. At the upper end of the insertion mating rod 83, a mating cavity plate 84 is fixedly arranged. The mating cavity plate 84 is inserted into the mating cavity 58.

[0046] As Figure 7 and Figure 11 shown, the connecting carrier plate 8 can drive the first limiting plate 9 to move, so that the first limiting plate 9 is separated from the impeller. The engagement plug 92 on the first limiting plate 9 is inserted into the engagement jack 81 on the connecting carrier plate 8. The driving frame 7 can also drive the second limiting plate 101 to move, and the second limiting plate 101 is driven to press against the impeller. When the driving frame 7 moves, as the driving frame 7 moves, the mating carrier strips 71 on the driving frame 7 will protrude from the inner slot 59 and contact the lower convex plate 103, thereby pushing the second limiting plate 101 to move.

[0047] When grinding the impeller, the impeller is placed on the rotating carrier plate 5. When placing, the rotating carrier plate 5 is on the upper side of the grinding carrier cylinder 3, and at this time, the rotating carrier plate 5 is in an inclined state. When the impeller is placed on the rotating carrier plate 5, the second limiting plate 101 limits it from both sides of the impeller, and at the same time, the first limiting plate 9 supports and limits the impeller from the lower side of the impeller, that is, at this time, the first limiting plate 9 is in contact with the circumferential surface of the impeller to prevent it from sliding up and down on the rotating carrier plate 5. In this way, the impeller can cover the upper port of the mating carrier cavity 58. After positioning the impeller, the arc surface pressing plate 105 on the second limiting plate 101 is inserted into the shaft hole on the impeller. Then, the hydraulic rod 2 can be started to drive the grinding carrier ring 4 to move downward. As the grinding carrier ring 4 moves downward, under the action of the mating rack 32, it will drive the gear 562 to rotate. As the gear 562 rotates, it will also drive the rotating carrier plate 5 to rotate until the rotating carrier plate 5 rotates to a horizontal state. At this time, the rotating carrier plate 5 with the impeller enters the grinding carrier cylinder 3. During the rotation of the rotating carrier plate 5, as the rotating carrier plate 5 rotates, under the restriction of the mating support 43, the driving connecting block 6 cannot move downward. This will make the distance between the lower end surface of the rotating carrier plate 5 and the driving connecting block 6 become smaller. As the distance between the rotating carrier plate 5 and the driving connecting block 6 becomes smaller, the connecting spring 63 will be in a compressed state. At the same time, under the action of the first connecting rod 64, it will drive the driving frame 7 to move away from the movable channel 51. In this way, under the action of the second connecting rod 73, it will drive the connecting carrier plate 8 to move downward relative to the rotating carrier plate 5. As the connecting carrier plate 8 moves downward relative to the rotating carrier plate 5, under the action of the mating cavity plate 84, a negative pressure will be formed in the mating carrier cavity 58, and thus the impeller can be adsorbed and fixed under the action of the negative pressure. At the same time, as the connecting carrier plate 8 moves downward, since the connecting insertion plate 92 on the first limiting plate 9 is inserted into the connecting insertion hole 81 on one of the connecting carrier plates 8, when the connecting carrier plate 8 connected to the first limiting plate 9 moves downward relative to the rotating carrier plate 5, it will also drive the first limiting plate 9 to move downward until the first limiting plate 9 is no longer in contact with the impeller. After the impeller is preliminarily fixed under the action of the negative pressure, as the rotating carrier plate 5 further rotates, the distance between the driving connecting block 6 and the lower end surface of the rotating carrier plate 5 will be further reduced. In this way, under the action of the second connecting rod 73, it will further drive the connecting carrier plate 8 to move downward, so that the negative pressure in the mating carrier cavity 58 can be further increased to fix the impeller well. And as the driving frame 7 moves, the mating carrier strip 71 on the driving frame 7 will be in contact with the lower convex plate 103 on the second limiting plate 101. In this way, under the action of the mating carrier strip 71, it will push the lower convex plate 103 to move away from the rotating carrier plate 5, and then drive the second limiting plate 101 to move away from the impeller, so that the second limiting plate 101 is separated from the impeller, and the first limiting plate 9 and the second limiting plate 101 no longer play a role in limiting the impeller.Moreover, the separation of the first limiting plate 9 and the second limiting plate 101 from the impeller also well avoids the obstruction of the first limiting plate 9 and the second limiting plate 101 to the grinding of the impeller during the grinding process of the impeller, ensuring the smooth grinding of the impeller. In addition, when the second limiting plate 101 moves away from the impeller, it will also drive the arc surface pressing plate 105 on the second limiting plate 101 to move towards the inner wall of the impeller shaft hole, so that the arc surface pressing plate 105 contacts the inner wall of the impeller shaft hole, enabling the arc surface pressing plate 105 to tightly press against the inner wall of the impeller shaft hole, providing auxiliary pressing and fixing for the impeller, and further improving the stability of the impeller fixation. Furthermore, when the impeller is being ground, the rotating carrier plate 5 rotates to a horizontal state, which can better support the impeller, ensuring its stability during the grinding process, avoiding the influence of gravity on its fixation in the inclined state, and enabling the abrasive grains and fluid to evenly grind the impeller in the horizontal state, ensuring the grinding quality. After grinding, the hydraulic rod 2 is started again to drive the grinding bearing ring 4 to move upward, driving the impeller out of the grinding bearing cylinder 3. During the upward movement, the rotating carrier plate 5 will rotate in the reverse direction under the action of the mating rack 32 and return to the inclined state again. In this way, it can be ensured that the abrasive grains and fluid will not accumulate on the impeller, enabling the abrasive grains and fluid to smoothly slide into the grinding bearing cylinder 3. At the same time, as the rotating carrier plate 5 rotates in the reverse direction, the distance between the driving connecting block 6 and the lower end surface of the rotating carrier plate 5 also becomes larger, thereby driving the driving frame 7 and the connecting carrier plate 8 to reset, resulting in the disappearance of the negative pressure and the loss of fixation on the impeller. At the same time, the first limiting plate 9 supports the impeller again. With the reset of the driving frame 7, the second limiting plate 101 will also reset under the action of the mating spring 106, and limit the impeller from both sides again. Then, the impeller can be taken off the rotating carrier plate 5 very conveniently.

[0048] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding device for facilitating the surface grinding of the rotating surface of an acid-resistant pump impeller, comprising a machine body, characterized in that: A grinding bearing assembly is arranged inside the machine body, and the impeller is ground inside the grinding bearing assembly. The grinding bearing assembly is a grinding bearing cylinder, and the grinding bearing cylinder is fixedly arranged inside the machine body. A matching rack is fixedly arranged inside the grinding bearing cylinder, and the impeller bearing mechanism is driven by the matching rack. An impeller bearing mechanism is installed on the grinding bearing assembly, and the impeller bearing mechanism includes a hydraulic rod, a grinding bearing ring and a rotating carrier plate. The hydraulic rod is fixedly connected to the grinding bearing ring, and the impeller is supported by the impeller bearing mechanism when the impeller is ground; A movable channel is arranged on the rotating carrier plate, plug-in cavities are symmetrically arranged on both sides of the movable channel, and a lower bearing plate is fixedly arranged on the lower port of the movable channel, and a lower bearing rod is fixedly arranged on the lower bearing plate, a bearing block is fixedly arranged on one end of the rotating carrier plate, a mounting bearing rod is fixedly arranged on the bearing block, a bearing is sleeved on the mounting bearing rod, and a gear is also fixedly arranged on the mounting bearing rod, the gear is meshed with a matching rack, a limited position channel is arranged on the bearing block, a bearing rod is symmetrically fixedly arranged on the rotating carrier plate, a limited position baffle is fixedly arranged on the bearing rod, and a matching cavity is also circumferentially arranged on the rotating carrier plate, a plug-in carrying hole is arranged on the bottom surface of the matching cavity, an inner slot is circumferentially arranged on the lower end surface of the rotating carrier plate, and a supporting inner rod is fixedly arranged in the inner slot; The hydraulic rod drives the grinding bearing ring to move up and down. The rotating carrier plate is installed on the grinding bearing ring. When the grinding bearing ring moves up and down, it cooperates with the rack to drive the rotating carrier plate to rotate; The impeller bearing mechanism is provided with an impeller positioning assembly, through which the impeller is limited so that it is accurately placed on the impeller bearing mechanism, the impeller positioning assembly includes a first limiting plate and a second limiting plate, the first limiting plate is arranged on both sides of the rotating carrier plate to limit the impeller from both sides, and the second limiting plate supports and limits the impeller from the lower side when the rotating carrier plate is in an inclined state, the first limiting plate is inserted in the limiting channel, and a connecting carrier plate is fixedly arranged at the lower end of the first limiting plate, and a connecting plug plate is fixedly arranged on the connecting carrier plate, a bearing channel is opened on the second limiting plate, a bearing rod is inserted in the bearing channel, and a matching spring is sleeved on the bearing rod, and the two ends of the matching spring are respectively fixed on the second limiting plate and the limiting baffle, a lower convex plate is symmetrically fixedly arranged at the lower end of the second limiting plate, and a plug-in carrier strip is also symmetrically fixedly arranged on the second limiting plate, the plug-in carrier strip is plugged in the plug-in cavity, and an arc surface tightening plate is fixedly arranged on the plug-in carrier strip, the arc surface tightening plate is in the movable channel, and part of it protrudes on the upper side of the movable channel; The impeller bearing mechanism is also provided with an impeller fixing assembly, through which the impeller is fixed, and when the impeller bearing mechanism moves, the impeller fixing assembly is driven to move.

2. The grinding device for facilitating the surface grinding of the rotating surface of the acid-resistant pump impeller according to claim 1, wherein: The impeller fixing assembly comprises a driving connecting block, a driving frame and a connecting carrier plate. The driving connecting block and the rotating carrier plate move relative to each other to drive the driving frame to move.

3. A grinding device for facilitating the surface grinding of the rotating surface of an acid-resistant pump impeller according to claim 2, characterized in that: The driving frame drives the connecting carrier plate to move, and fixes the impeller through the connecting carrier plate.

4. A grinding device for facilitating the surface grinding of the rotating surface of an acid-resistant pump impeller according to claim 3, characterized in that: The connecting carrier plate can drive the first limiting plate to move, so that the first limiting plate is separated from the impeller.

5. A grinding device for facilitating the surface grinding of the rotating surface of an acid-resistant pump impeller according to claim 4, characterized in that: The driving frame can also drive the second limiting plate to move, and drive the second limiting plate to tightly press against the impeller.

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