Impeller and centrifugal pump
By setting inclined cleaning holes on the back plate of the centrifugal pump, efficient cleaning of the gap between the back of the impeller and the partition plate is achieved, solving the problem of poor cleaning effect in traditional centrifugal pumps, improving cleaning efficiency and reducing the waste of cleaning liquid .
Patent Information
- Application Number
- CN202421090395.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-17
AI Technical Summary
The gap between the back of the impeller and the partition plate in a traditional centrifugal pump has poor cleaning effect, resulting in a long online CIP cleaning time and wasted cleaning liquid, affecting the production cycle.
An impeller device is designed, and the back plate is provided with an inclined first cleaning hole and a second cleaning hole. Through these orifices, the water flow can effectively clean the gap between the back surface of the impeller and the partition plate to improve the cleaning effect and efficiency. , and ensure comprehensive cleaning coverage through the cooperation of multiple cleaning hole groups and blades.
It significantly improves the cleaning efficiency of the gap between the back of the impeller and the partition, reduces the waste of cleaning liquid, simplifies the manufacturing process and reduces the design difficulty.
Smart Images
Figure CN222185196U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of centrifugal pumps, in particular to an impeller and a centrifugal pump. Background Art
[0002] In the fields of food, pharmaceuticals, fine chemicals, etc., the requirements for hygiene in material transportation are getting higher and higher, and the requirements for the hygiene and convenience of cleaning of transportation equipment are also getting higher and higher. In the production process, online CIP (Cleaning InPlace) cleaning is often required to meet the hygiene requirements.
[0003] In traditional centrifugal pump transportation, if an open or semi-open impeller is used, in order to improve the efficiency of the centrifugal pump and reduce energy consumption, the gap between the back of the impeller and the partition is very small. During online CIP cleaning, the gap between the back of the impeller and the partition is relatively small, which increases the difficulty of cleaning the back of the impeller and the partition accordingly. It takes a long time to clean the back of the impeller and the partition online CIP, which affects the production cycle and causes waste of CIP cleaning fluid. Utility Model Content
[0004] In view of this, the utility model provides an impeller and a centrifugal pump to solve the problem of poor cleaning effect of the gap between the back of the impeller and the partition plate in the existing centrifugal pump.
[0005] In a first aspect, the utility model provides an impeller device, a back plate, comprising a first surface and a second surface arranged opposite to each other;
[0006] A cleaning structure is arranged on the back plate, and the cleaning structure includes a first cleaning hole and a second cleaning hole. The first cleaning hole and the second cleaning hole both pass through the first surface and the second surface. The axes of the first cleaning hole and the second cleaning hole are arranged to be inclined to the axis of the impeller.
[0007] Beneficial effect: The impeller can clean the gap between the second surface and the partition through the cleaning structure. During CIP cleaning, water flows toward the first surface to the impeller. While the impeller rotates, water flows through the first cleaning hole and the second cleaning hole to reach the gap between the second surface and the partition. Since the axes of the first cleaning hole and the second cleaning hole are inclined to the axis of the impeller, the water flows through the first cleaning hole and the second cleaning hole and form a certain angle with the surface of the partition. On the one hand, it can effectively enhance the cleaning of attachments on the surface of the partition by the water flow and improve the cleaning effect. On the other hand, the first cleaning hole and the second cleaning hole can be directed to clean the gap between the second surface and the partition to obtain a larger cleaning coverage area, further improving the cleaning effect and cleaning efficiency, and effectively reducing the waste of cleaning fluid.
[0008] In an optional embodiment, the axis of the first cleaning hole and / or the axis of the second cleaning hole passes through the axis center of the back plate at the intersection of the extension lines of the projection of the back plate.
[0009] Beneficial effect: This setting makes the processing of the first cleaning hole and the second cleaning hole regular and simple, facilitates the processing and manufacturing of the first cleaning hole and the second cleaning hole, reduces the manufacturing difficulty, and improves production efficiency. At the same time, it is easier to set the specific parameters of the first cleaning hole and the second cleaning hole, reducing the design difficulty.
[0010] In an optional embodiment, the distance from the intersection of the first cleaning hole axis and the second surface to the back plate axis is equal to the distance from the intersection of the second cleaning hole axis and the second surface to the back plate axis.
[0011] Beneficial effect: the intersection point of the axis of the first cleaning hole and the second surface and the intersection point of the axis of the second cleaning hole and the second surface are on the same circle, and because the first cleaning hole and the second cleaning hole can be cleaned in different directions, the first cleaning hole and the second cleaning hole can be bounded by the circle, one cleaning toward the inside of the circle and the other cleaning toward the outside of the circle, thereby avoiding cleaning dead corners between the first cleaning hole and the second cleaning hole and ensuring the cleaning effect.
[0012] In an optional embodiment, the acute angle formed between the axis of the first cleaning hole and the second surface is a first angle, the acute angle formed between the axis of the second cleaning hole and the second surface is a second angle, and the range of the first angle and the second angle is [20°, 70°].
[0013] Beneficial effect: Within this range, the angle at which the water flows into the gap after passing through the first cleaning hole and the second cleaning hole can be guaranteed, thereby improving the cleaning effects of the first cleaning hole and the second cleaning hole.
[0014] In an optional embodiment, at least two of the first cleaning holes and the second cleaning holes are provided, and the first cleaning holes and the second cleaning holes are spaced and staggered.
[0015] Beneficial effect: It prevents the first cleaning hole and the second cleaning hole from being connected, causing the water flow in the first cleaning hole to interfere with the water flow in the second cleaning hole, thereby affecting the cleaning effect.
[0016] In an optional embodiment, one of the first cleaning holes and one of the second cleaning holes are respectively arranged on both sides of the impeller axis to form a cleaning hole group, and the cleaning hole group is provided with at least one group, and the axes of the first cleaning hole and the second cleaning hole in the cleaning hole group are parallel.
[0017] Beneficial effect: The cleaning range of the first cleaning hole and the cleaning range of the second cleaning hole in the cleaning hole group complement each other, so that the gap between the second surface and the partition plate can be cleaned more comprehensively. The parallel axes of the first cleaning hole and the second cleaning hole can ensure that the first cleaning hole and the second cleaning hole have the same cleaning effect on different parts.
[0018] In an optional embodiment, a plurality of cleaning hole groups are provided, and the plurality of cleaning hole groups are arranged in a matrix with the axis of the back plate as the center.
[0019] Beneficial effect: The multiple cleaning hole groups increase the number of cleaning times for the gap between the second surface and the partition plate, thereby enhancing the cleaning effect and improving the cleaning efficiency.
[0020] In an optional embodiment, it further includes a plurality of blades, which are arranged on the first surface at intervals around the axis of the back plate.
[0021] Beneficial effect: During the rotation of the impeller, the blades rotate with the back plate to push the water flow to generate centrifugal force, so that the water flow is pumped out.
[0022] In an optional embodiment, the first cleaning hole and / or the second cleaning hole is arranged between two adjacent blades.
[0023] Beneficial effects: ensuring that water can flow through the first cleaning hole, avoiding interference between the first cleaning hole and the second cleaning hole and the structure of the blade, making full use of the setting space, and ensuring the cleaning effect.
[0024] In a second aspect, the utility model further provides a centrifugal pump system, comprising a partition plate and the above-mentioned impeller, wherein the second surface of the back plate in the impeller is in gap fit with the partition plate.
[0025] Beneficial effect: Through the impeller, the gap between the second surface and the partition plate can be effectively cleaned during CIP cleaning, and the cleaning efficiency is effectively improved, thereby reducing the waste of cleaning liquid. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0027] Figure 1 This is a front view of an impeller according to an embodiment of the utility model;
[0028] Figure 2A cross-sectional view of an impeller according to an embodiment of the utility model;
[0029] Figure 3 This is a cross-sectional view of a centrifugal pump according to an embodiment of the utility model.
[0030] Description of reference numerals:
[0031] 1. back plate; 11. first surface; 12. second surface; 121. circle; 13. plate body; 14. connecting part; 141. first connecting hole;
[0032] 2. Cleaning structure; 21. First cleaning hole; 22. Second cleaning hole;
[0033] 3. Leaves;
[0034] 4. spacer; 41. second connecting hole;
[0035] 5. Pump body; 51. Water inlet; 52. Water outlet;
[0036] 6. Driving parts. DETAILED DESCRIPTION
[0037] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0038] Combine the following Figures 1 to 3 , describing the embodiments of the impeller and centrifugal pump of the utility model.
[0039] According to an embodiment of the utility model, on the one hand, an impeller is provided, comprising a back plate 1 and a cleaning structure 2. The back plate 1 comprises a first surface 11 and a second surface 12 arranged opposite to each other; the cleaning structure 2 is arranged on the back plate 1, and the cleaning structure 2 comprises a first cleaning hole 21 and a second cleaning hole 22, both of which penetrate the first surface 11 and the second surface 12, and the axes of the first cleaning hole 21 and the second cleaning hole 22 are arranged to be inclined to the axis of the impeller.
[0040] The impeller provided in this embodiment can clean the gap between the second surface 12 and the partition plate through the cleaning structure 2. When CIP cleaning is performed, water flows toward the first surface 11 toward the impeller. While the impeller rotates, the water flows through the first cleaning hole 21 and the second cleaning hole 22 to reach the gap between the second surface 12 and the partition plate 4. Since the axes of the first cleaning hole 21 and the second cleaning hole 22 are inclined to the axis of the impeller, the water flows through the first cleaning hole 21 and the second cleaning hole 22 and the surface of the partition plate 4 will form a certain angle. On the one hand, it can effectively improve the cleaning of the attachments on the surface of the partition plate 4 by the water flow, thereby improving the cleaning effect. On the other hand, it enables the first cleaning hole 21 and the second cleaning hole 22 to clean the gap between the second surface 12 and the partition plate 4 in a directional manner, so as to obtain a larger cleaning coverage area, further improve the cleaning effect and cleaning efficiency, and effectively reduce the waste of cleaning liquid.
[0041] The back plate 1 includes a plate body 13 and a connecting portion 14, the connecting portion 14 is arranged at the axial position of the plate body 13, and the connecting portion 14 is formed with a first connecting hole 141, and the first connecting hole 141 is arranged coaxially with the plate body 13. The impeller is assembled and connected with the partition plate 4 through the connecting portion 14. The first cleaning hole 21 and the second cleaning hole 22 are both arranged on the plate body 13.
[0042] Specifically, the intersection of the extension lines of the projection of the axis of the first cleaning hole 21 and / or the axis of the second cleaning hole 22 on the back plate 1 passes through the axis of the back plate 1. This arrangement makes the processing of the first cleaning hole 21 and the second cleaning hole 22 regular and simple, facilitates the processing and manufacturing of the first cleaning hole 21 and the second cleaning hole 22, reduces the manufacturing difficulty, improves the production efficiency, and at the same time, it is easier to set the specific parameters of the first cleaning hole 21 and the second cleaning hole 22, reducing the design difficulty.
[0043] Furthermore, the distance from the intersection of the axis of the first cleaning hole 21 and the second surface 12 to the axis of the back plate 1 is equal to the distance from the intersection of the axis of the second cleaning hole 22 and the second surface 12 to the axis of the back plate 1. The above arrangement enables the intersection of the axis of the first cleaning hole 21 and the axis of the second cleaning hole 22 on the second surface 12 to be located on the circle 121, and the center of the circle 121 coincides with the axis of the impeller. Since the first cleaning hole 21 and the second cleaning hole 22 can be cleaned in different directions as described above, the first cleaning hole 21 and the second cleaning hole 22 can be cleaned with the circle 121 as the boundary, one cleaning toward the inside of the circle 121 and the other cleaning toward the outside of the circle 121, so as to avoid the occurrence of a cleaning dead angle between the first cleaning hole 21 and the second cleaning hole 22. At the same time, it can also make the impeller structure regular, which is conducive to ensuring the structural strength and service life.
[0044] Furthermore, the extended line of the projection of the axis of the first cleaning hole 21 and / or the axis of the second cleaning hole 22 on the back plate 1 passes through the axis of the back plate 1. This is convenient for design and processing, and can also reduce interference with the water flow direction, resulting in a significant reduction in water flow speed, thereby avoiding affecting the cleaning effect.
[0045] Furthermore, the acute angle formed between the axis of the first cleaning hole 21 and the second surface 12 is the first angle α, and the acute angle formed between the axis of the second cleaning hole 22 and the second surface 12 is the second angle β. The range of the first angle α and the second angle β is [20°, 70°]. In this range, the angle of the water flow into the gap after passing through the first cleaning hole 21 and the second cleaning hole 22 can be guaranteed, thereby improving the cleaning effect of the first cleaning hole 21 and the second cleaning hole 22. In this embodiment, the angles of the first angle α and the second angle β are both 60°. In other embodiments, the angles of the first angle and the second angle may preferably be 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 65°, and 70°.
[0046] Of course, in other embodiments, the first angle α and the second angle β may also be set to be different.
[0047] Specifically, there are at least two first cleaning holes 21 and second cleaning holes 22, and the first cleaning holes 21 and the second cleaning holes 22 are spaced and staggered to avoid the first cleaning holes 21 and the second cleaning holes 22 being connected, causing the water flow in the first cleaning hole 21 to interfere with the water flow in the second cleaning hole 22, thereby affecting the cleaning effect.
[0048] In this embodiment, three first cleaning holes 21 and three second cleaning holes 22 are respectively provided, six blades 3 are provided, and the first cleaning holes 21 and the second cleaning holes 22 are respectively arranged in six gaps generated between the six blades 3 in an alternating manner.
[0049] In other embodiments, the number of blades 3, first cleaning holes 21 and second cleaning holes 22 should be set according to the size of the water pump and the application scenario. Between two adjacent blades 3, two or more first cleaning holes 21 and / or second cleaning holes 22 can also be set along the extension direction of the blades 3 to ensure the cleaning effect of gaps with larger areas.
[0050] Further, a first cleaning hole 21 and a second cleaning hole 22 are respectively arranged on both sides of the impeller axis to form a cleaning hole group, and the cleaning hole group is provided with at least one group, and the axes of the first cleaning hole 21 and the second cleaning hole 22 in the cleaning hole group are parallel. The cleaning range of the first cleaning hole 21 and the cleaning range of the second cleaning hole 22 in the cleaning hole group are complementary, and the gap between the second surface 12 and the partition plate 4 can be cleaned more comprehensively. The parallel axes of the first cleaning hole 21 and the second cleaning hole 22 can ensure that the first cleaning hole 21 and the second cleaning hole 22 have the same cleaning effect on different parts.
[0051] Specifically, Figure 2 As shown, the cleaning liquid passes through the first cleaning hole 21 and the second cleaning hole 22 from the first surface 11 to reach the gap between the second surface 12 and the partition plate 4. The water outlet direction of the first cleaning hole 21 is away from the axial direction of the back plate 1, so the annular area of the gap outside the circle 121 can be cleaned, while the water outlet direction of the second cleaning hole 22 is toward the axial direction of the back plate 1, so the gap within the circle 121 can be cleaned. The cleaning ranges are complementary, and the gap is cleaned in all directions, ensuring the cleaning effect.
[0052] Furthermore, there are multiple cleaning hole groups, which are arranged in a matrix around the axis of the back plate 1. The multiple cleaning hole groups increase the number of cleaning times for the gap between the second surface 12 and the spacer 4, enhance the cleaning effect, and improve the cleaning efficiency.
[0053] Specifically, the impeller further includes a plurality of blades 3, which are arranged on the first surface 11 at intervals around the axis of the back plate 1. During the rotation of the impeller, the blades 3 rotate with the back plate 1, thereby pushing the water flow to generate centrifugal force, so that the water flow is pumped out. This embodiment does not limit the specific structural form of the blades 3.
[0054] Specifically, the first cleaning hole 21 and / or the second cleaning hole 22 are arranged between two adjacent blades 3. This ensures that water can flow through the first cleaning hole 21 and avoids interference between the first cleaning hole 21 and the second cleaning hole 22 and the structure of the blade 3, thereby ensuring the cleaning effect.
[0055] According to an embodiment of the present invention, on the other hand, a centrifugal pump is provided. The centrifugal pump includes a partition plate 4 and the above-mentioned impeller, and the second surface 12 of the back plate 1 of the impeller is gap-matched with the partition plate 4.
[0056] Specifically, Figure 3As shown, the partition plate 4 is provided with a second connecting hole 41, the connecting part 14 is rotatably arranged in the second connecting hole 41, and the connecting part 14 is coaxially arranged with the second connecting hole 41, the second surface 12 of the impeller is arranged opposite to the partition plate 4 to form a gap, and the cleaning liquid passes from the first surface 11 through the first cleaning hole 21 and the second cleaning hole 22 to reach the gap between the second surface 12 and the partition plate 4 to clean the gap.
[0057] By means of the impeller, the gap between the second surface 12 and the partition plate 4 can be effectively cleaned during CIP cleaning, and the cleaning efficiency is effectively improved, thereby reducing the waste of cleaning liquid.
[0058] Furthermore, the centrifugal pump also includes a pump body 5 and a driving member 6, the pump body 5 includes a water inlet 51 and a water outlet 52, the pump body 5 is fixedly connected to one side of the partition plate 4, the impeller is arranged between the pump body 5 and the partition plate 4, the driving member 6 is arranged on the other side of the partition plate 4, the driving shaft of the driving member 6 is passed through the second connecting hole 41 of the partition plate 4 and is connected to the first connecting hole 141 of the impeller, and the driving member 6 is used to drive the rotation of the impeller to pump water.
[0059] The present invention does not limit the specific type of the driving member 6. In the present embodiment, the driving member 6 is a servo motor, and in other embodiments, it may also be a stepping motor.
[0060] Specifically, the water inlet 51 is coaxially arranged with the pump body 5 to ensure that water flows evenly into the pump body 5 from the water inlet 51 and ensures even centrifugation of the impeller.
[0061] Specifically, the axis of the water outlet 52 is tangent to the circle on which the circumference of the impeller is located. When the impeller rotates, the centrifugal force acts on the water and is directly discharged through the water outlet 52, thereby reducing energy loss.
[0062] The basic working process of the centrifugal pump provided by the utility model is as follows:
[0063] The water inlet 51 of the pump body 5 is connected to the water inlet pipe, and the water outlet 52 of the pump body 5 is connected to the water outlet pipe. While the water inlet 51 is waterproof, the driving part 6 drives the impeller to rotate. The rotating impeller drives the water flow to rotate and generate centrifugal force. Under the action of centrifugal force, the water flow will be discharged from the water outlet 52; at the same time, the water flow will pass through the first cleaning hole 21 and the second cleaning hole 22 to flush the gap between the second surface 12 and the partition plate 4. The water flow passing through the first cleaning hole 21 and the second cleaning hole 22 will form a certain angle with the surface of the partition plate 4, so that the rotation of the water flow impeller passes through the first cleaning hole 21 and the second cleaning hole 22 respectively to clean different positions of the gap.
[0064] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.
Claims
1. An impeller, characterized in that: include: A back plate (1) comprising a first surface (11) and a second surface (12) arranged opposite to each other; A cleaning structure (2) is arranged on the back plate (1), and the cleaning structure (2) comprises a first cleaning hole (21) and a second cleaning hole (22), the first cleaning hole (21) and the second cleaning hole (22) both pass through the first surface (11) and the second surface (12), and the axes of the first cleaning hole (21) and the second cleaning hole (22) are arranged to be inclined with respect to the axis of the impeller.
2. The impeller according to claim 1, characterized in that: The extension line of the projection of the axis of the first cleaning hole (21) and / or the axis of the second cleaning hole (22) on the back plate (1) passes through the axis center of the back plate (1).
3. The impeller according to claim 1, characterized in that: The distance from the intersection of the axis of the first cleaning hole (21) and the second surface (12) to the axis of the back plate (1) is equal to the distance from the intersection of the axis of the second cleaning hole (22) and the second surface (12) to the axis of the back plate (1).
4. The impeller according to claim 1, characterized in that: The acute angle formed between the axis of the first cleaning hole (21) and the second surface (12) is a first angle, and the acute angle formed between the axis of the second cleaning hole (22) and the second surface (12) is a second angle. The range of the first angle and the second angle is [20°, 70°].
5. The impeller according to claim 1, characterized in that: At least two of the first cleaning holes (21) and the second cleaning holes (22) are provided, and the first cleaning holes (21) and the second cleaning holes (22) are arranged at intervals and in an alternating manner.
6. The impeller according to claim 1, characterized in that: A first cleaning hole (21) and a second cleaning hole (22) are respectively arranged on both sides of the impeller axis to form a cleaning hole group, and the cleaning hole group is provided with at least one group, and the axes of the first cleaning hole (21) and the second cleaning hole (22) in the cleaning hole group are parallel.
7. The impeller according to claim 6, characterized in that There are multiple cleaning hole groups, and the multiple cleaning hole groups are arranged in a matrix with the axis of the back plate (1) as the center.
8. The impeller according to any one of claims 1 to 7, characterized in that: It also comprises a plurality of blades (3), wherein the plurality of blades (3) are arranged on the first surface (11) at intervals around the axis of the back plate (1).
9. The impeller according to claim 8, characterized in that The first cleaning hole (21) and / or the second cleaning hole (22) is arranged between two adjacent blades (3).
10. A centrifugal pump, characterized in that: The centrifugal pump comprises a partition plate (4) and an impeller according to any one of claims 1 to 9, wherein the second surface (12) of the back plate (1) of the impeller is clearance-matched with the partition plate (4).