Anti-blocking assembly and shield pump
By installing a pump efficiency ring on the pump motor rotor, a pushing force is provided to the medium, solving the problem of pump rotor blockage, effectively preventing impurities and improving flow, extending the service life of the pump and reducing the probability of failure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-05
- Publication Date
- 2026-04-03
AI Technical Summary
Existing technologies are insufficient to effectively prevent blockage caused by the accumulation of impurities inside the pump rotor, especially under high-temperature media conditions, where impurities can easily generate scale and other particulate matter, affecting the circulation of the media circuit and the normal operation of the pump.
A pump efficiency ring is installed on the motor rotor of the water pump. The pump efficiency ring provides a pushing force to the medium, improves the flow of the medium, and prevents impurities from accumulating inside the rotor.
It effectively prevents large and small particles of impurities from accumulating inside the rotor, reduces the probability of water pump failure, extends service life, reduces maintenance costs, and improves user experience.
Smart Images
Figure CN224083283U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of water pump technology, and in particular, to an anti-clogging component and a shielded pump. Background Technology
[0002] Water pumps are fluid transport devices widely used in industry, agriculture, and municipal sectors. Their main function is to pump liquids from low-pressure areas to high-pressure areas, or from low-pressure areas to high-pressure areas, to meet the liquid transport needs of different scenarios. However, when impurities are present in the medium being transported by the water pump, blockages can easily occur, leading to reduced pump efficiency or even damage, affecting its normal operation. For example, ... Figure 1 The diagram shows a canned motorized hot water circulation pump 100 for use in a heating, ventilation, and air (HVAC) circulation system. Arrow ① indicates the main circulation loop, and arrow ② indicates the secondary circulation loop. The medium enters through the pump inlet 101, passes through the main and secondary loops, and exits through the pump outlet 103. The secondary loop provides heat dissipation and lubrication for the rotor 105. Under high-temperature medium conditions, water in the medium easily generates scale and other impurities. These impurities may accumulate inside the rotor during long-term pump operation, causing rotor blockage.
[0003] Existing technologies employ measures to prevent large particles from entering the rotor of a canned motor pump, thus addressing the problem of rotor blockage caused by impurity accumulation. For example, laser-drilling holes in the pump cover and controlling the hole diameter to be sufficiently small prevents large particles from entering the rotor. Another example is installing a filter screen on the pump cover to prevent large particles from entering the rotor. However, while these measures reduce the likelihood of impurities entering the rotor to some extent, they cannot completely prevent particle accumulation inside the rotor. Furthermore, after prolonged operation, the holes / filter screen may still become clogged, affecting the circulation of the medium loop, leading to ineffective heat dissipation and insufficient lubrication, which may ultimately cause pump failure. Utility Model Content
[0004] To address at least some of the aforementioned problems, this disclosure proposes a novel anti-clogging component and a shielded pump. By placing a pump efficiency ring on the motor rotor, the pump efficiency ring can provide auxiliary pushing force for the medium inside the pump, improve the flow of the medium, thereby preventing impurities from accumulating inside the rotor and causing blockage, reducing the probability of pump failure, and extending the service life of the pump.
[0005] In a first aspect of this disclosure, an anti-clogging component for a water pump is provided, the anti-clogging component comprising: a motor rotor; and a pump efficiency ring disposed on the motor rotor for providing a pushing force to the medium within the water pump.
[0006] In a preferred embodiment of the first aspect of this disclosure, the anti-clogging component includes a shielding sleeve for accommodating the motor rotor and the pump efficiency ring; and a cover that fits over the shielding sleeve.
[0007] In a preferred embodiment of the first aspect of this disclosure, the pump efficiency ring is injection molded and / or interference-fitted onto the motor rotor.
[0008] In a preferred embodiment of the first aspect of this disclosure, the pump efficiency ring is injection molded onto the motor rotor, comprising: the pump efficiency ring being injection molded onto one end, both ends, or the middle of the motor rotor.
[0009] In a preferred embodiment of the first aspect of this disclosure, the pump efficiency ring is interference-fitted onto the motor rotor, comprising: the pump efficiency ring fully or partially covering the outer surface of the motor rotor.
[0010] In a preferred embodiment of the first aspect of this disclosure, the injection molding and interference fit of the pump efficiency ring onto the motor rotor includes: a portion of the pump efficiency ring being injection molded at one end of the motor rotor, and another portion of the pump efficiency ring being interference fit onto the outer surface of the motor rotor.
[0011] In a preferred embodiment of the first aspect of this disclosure, the pump efficiency ring includes an external spiral pump efficiency ring or an internal and external spiral combination pump efficiency ring.
[0012] In a preferred embodiment of the first aspect of this disclosure, the spiral groove of the pump efficiency ring includes a rectangular, triangular, or trapezoidal groove shape.
[0013] In a preferred embodiment of the first aspect of this disclosure, the anti-clogging component is used in a hot water circulation shielded pump, and the pump efficiency ring is an external spiral pump efficiency ring.
[0014] In a second aspect of this disclosure, a shielded pump is provided, comprising: a pump body having a media circulation chamber therein; and the aforementioned anti-clogging component disposed within the media circulation chamber, wherein the motor rotor, when rotating, drives the pump efficiency ring to rotate to provide a pushing force to the media within the media circulation chamber.
[0015] The novel anti-clogging component and its application in the canned motor pump disclosed herein achieve their anti-clogging function by incorporating a pump effect ring on the motor rotor. The rotation of the motor rotor drives the pump effect ring to rotate, generating a helical pushing force that creates a certain axial flow velocity in the medium, thereby promoting the flow of the medium inside the rotor and preventing impurities from accumulating inside. Conventional rotor cores have smooth circular walls on the outside; this disclosure adds a pump effect ring to the outside of the rotor core as an auxiliary medium pushing device, effectively improving the medium flow and preventing impurities from accumulating inside the rotor. Compared to existing technologies, this disclosure not only prevents the accumulation of large particles of impurities inside the rotor but also prevents the accumulation of small particles. Even with prolonged pump operation, clogging is less likely, increasing product lifespan, reducing the probability of product failure, saving repair and maintenance costs, and improving the user experience. Attached Figure Description
[0016] Other features and advantages of this disclosure will be better understood from the following preferred embodiments, described in detail with reference to the accompanying drawings, in which:
[0017] Figure 1 A cross-sectional structural schematic diagram of a hot water circulation shielded pump 100 in the prior art is shown.
[0018] Figure 2a A schematic cross-sectional view of a pump efficiency ring interference-fitted anti-clogging assembly 200 according to an embodiment of the present disclosure is shown.
[0019] Figure 2b It shows Figure 2a A schematic diagram of the exploded structure of the anti-clogging component 200.
[0020] Figure 2c It shows Figure 2a A schematic diagram of the front structure of the pump efficiency ring.
[0021] Figure 2d It shows Figure 2a A schematic diagram of the side structure of the pump efficiency ring.
[0022] Figure 3a A schematic cross-sectional view of a pump efficiency ring injection-molded anti-clogging component 300 according to an embodiment of the present disclosure is shown.
[0023] Figure 3b It shows Figure 3a The exploded structure diagram of the anti-clogging component 300.
[0024] Figure 3c It shows Figure 3a A front structural diagram of the pump efficiency ring combined with the rotor.
[0025] Figure 3d It shows Figure 3a A side view of the pump efficiency ring and rotor combined.
[0026] Figure 4 A schematic diagram of the longitudinal cross-sectional structure of the anti-clogging component 200 and the anti-clogging component 300 is shown. Detailed Implementation
[0027] In the following detailed description of preferred embodiments, reference will be made to the accompanying drawings, which form a part of this disclosure. The accompanying drawings illustrate, by way of example, specific embodiments that can implement this disclosure. The exemplary embodiments are not intended to be exhaustive of all embodiments according to this disclosure. It will be understood that other embodiments and structural or logical modifications may be made without departing from the scope of this disclosure. Therefore, the following detailed description is not restrictive, and the scope of this disclosure is defined by the appended claims.
[0028] Before introducing the embodiments of this disclosure, some of the terms used in this disclosure will be explained in order to better understand this disclosure.
[0029] The terms "a," "a group," or "one," and similar words used in this disclosure do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar terms used in this disclosure should be understood as open-ended terms, meaning "including / including but not limited to," indicating that other contents may be included. The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment," and so on. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0030] As mentioned above, in the prior art, the presence of impurities in the pump medium can easily cause blockages inside the rotor or in the medium circuit. To solve this problem, this disclosure proposes a novel anti-clogging component and a canned motor pump using it. By installing a pump efficiency ring on the pump's motor rotor to provide a pushing force for the medium, the circulation of the medium is promoted, thereby preventing the accumulation of impurities.
[0031] One embodiment of this disclosure illustrates an anti-clogging assembly 200 with an interference fit for a pump efficiency ring. (See also...) Figure 2a , Figure 2b , Figure 2c , Figure 2dand Figure 4 The anti-clogging component 200 is described in detail. Figure 2a A schematic diagram of the transverse cross-sectional structure of the anti-clogging component 200 is shown. Figure 2b It shows Figure 2a A schematic diagram of the exploded structure of the anti-clogging component 200. Figure 2c It shows Figure 2a A schematic diagram of the front structure of the pump efficiency ring. Figure 2d It shows Figure 2a A schematic diagram of the side structure of the pump efficiency ring. Figure 4 A schematic diagram of the longitudinal cross-sectional structure of the anti-clogging component 200 is shown.
[0032] The anti-clogging assembly 200 is used in a water pump and includes a motor rotor 201 and a pump efficiency ring 203. The pump efficiency ring 203 is interference-fitted onto the motor rotor 201 to provide a pushing force for the medium within the water pump. Specifically, the pump rotates counterclockwise with a right-handed pump efficiency ring, and rotates clockwise with a left-handed pump efficiency ring. In some examples, the anti-clogging assembly 200 also includes a shielding sleeve 205 and a cover 207. The shielding sleeve 205 accommodates the motor rotor 201 and the pump efficiency ring 203; the cover 207 closes onto the shielding sleeve 205 to encapsulate the motor rotor and the pump efficiency ring inside the shielding sleeve.
[0033] In some examples, the pump efficiency ring 203 can completely cover the outer surface of the motor rotor 201, such as... Figure 2a As shown. In some other examples, the pump effect ring 203 partially covers the outer surface of the motor rotor 201 (not shown). Preferably, the pump effect ring 203 fully covers the outer surface of the motor rotor 201, because the longer the length L1 of the pump effect ring, the stronger its pumping capacity.
[0034] In some examples, the helix length L1 of the pump efficiency ring is greater than 20 mm. Preferably, in some examples, the helix length L1 of the pump efficiency ring is 25 mm, which can control the production cost of the product while ensuring pumping capacity.
[0035] In some examples, the helix angle α of the helical groove of the pump efficiency ring ranges from 15° to 45°. Preferably, in some examples, the helix angle α of the helical groove of the pump efficiency ring is 45°, which not only increases the pumping velocity through a larger helix angle and has a positive effect on preventing the accumulation of impurities, but also avoids the axial swirling flow caused by an excessively large helix angle from affecting the discharge of impurities.
[0036] In some examples, the gap (ΦD1-ΦD2) / 2 between the pump effect ring and the shielding sleeve ranges from 0.1 mm to 0.3 mm. The larger the gap, the weaker the pumping capacity of the pump effect ring. Preferably, in some examples, the gap (ΦD1-ΦD2) / 2 between the pump effect ring and the shielding sleeve is 0.3 mm to facilitate assembly and reduce machining difficulty.
[0037] In some examples, the groove depth h of the helical groove of the pump efficiency ring is 2 mm. The larger the groove depth h, the stronger the pumping capacity of the pump efficiency ring.
[0038] In some examples, the axial groove width b of the pump effect ring ranges from 3 mm to 4 mm. As the axial groove width b increases, the pumping capacity first increases and then decreases. Preferably, in some examples, the axial groove width b of the pump effect ring is 4 mm, which reduces the processing difficulty while ensuring pumping capacity.
[0039] In some examples, the pump efficiency ring can be an external spiral pump efficiency ring, that is, a pump efficiency ring with spiral channels machined only on its outer surface, suitable for water pumps with small internal space in the shielding sleeve, such as hot water circulating shielded pumps. In other examples, the pump efficiency ring can be a pump efficiency ring with an inner and outer spiral combination, that is, a pump efficiency ring composed of an inner spiral and an outer spiral, whose inner and outer spirals cooperate to achieve pumping of the medium. The inner and outer spiral combination pump efficiency ring is suitable for water pumps with large internal space in the shielding sleeve.
[0040] In some examples, the spiral groove of the pump effect ring can be rectangular. In other examples, the spiral groove of the pump effect ring can be triangular. In still other examples, the spiral groove of the pump effect ring can be trapezoidal. Preferably, in some examples, the groove of the pump effect ring is rectangular, which has the advantages of simple structure and easy manufacturing.
[0041] Another embodiment of this disclosure illustrates an injection-molded anti-clogging component 300 for a pump efficiency ring. (See reference...) Figure 3a , Figure 3b , Figure 3c , Figure 3d and Figure 4 The anti-clogging component 300 is described in detail. Figure 3a A schematic diagram of the transverse cross-sectional structure of the anti-clogging component 300 is shown. Figure 3b It shows Figure 3a The exploded structure diagram of the anti-clogging component 300. Figure 3c It shows Figure 3a A front structural diagram of the pump efficiency ring combined with the rotor. Figure 3d It shows Figure 3a A side view of the pump efficiency ring and rotor combined. Figure 4 A schematic diagram of the longitudinal cross-sectional structure of the anti-clogging component 300 is shown.
[0042] The anti-clogging component 300 is used in a water pump and includes a motor rotor 301 and a pump efficiency ring 303. The pump efficiency ring 303 is injection-molded onto the motor rotor 301 and is used to provide pushing force for the medium within the water pump. Specifically, the water pump rotates counterclockwise with a right-handed pump efficiency ring, and rotates clockwise with a left-handed pump efficiency ring. In some examples, the anti-clogging component 300 also includes a shielding sleeve 305 and a cover 307. The shielding sleeve 305 is used to accommodate the motor rotor 301 and the pump efficiency ring 303; the cover 307 covers the shielding sleeve 305 to encapsulate the motor rotor and the pump efficiency ring inside the shielding sleeve.
[0043] In some examples, the pump efficiency ring 303 is injection molded at both ends of the motor rotor 301, such as... Figure 3a As shown. In some other examples, the pump effect ring 303 may be injection molded only at one end, the front end, or the rear end of the motor rotor 301. In other examples, the pump effect ring 303 may also be injection molded at other locations on the motor rotor 301, such as in the middle of the motor rotor.
[0044] In some examples, the helix angle α of the helical groove of the pump efficiency ring ranges from 15° to 45°. Preferably, in some examples, the helix angle α of the helical groove of the pump efficiency ring is 45°, which not only increases the pumping velocity through a larger helix angle and has a positive effect on preventing the accumulation of impurities, but also avoids the axial swirling flow caused by an excessively large helix angle from affecting the discharge of impurities.
[0045] In some examples, the helical length (L2+L3) of the helical groove of the pump efficiency ring is greater than 20 mm. Preferably, in some examples, the helical length (L2+L3) of the pump efficiency ring is 25 mm, which can control the production cost of the product while ensuring pumping capacity.
[0046] In some examples, the gap (ΦD1-ΦD2) / 2 between the pump effect ring and the shielding sleeve ranges from 0.1 mm to 0.3 mm. The larger the gap, the weaker the pumping capacity of the pump effect ring. Preferably, in some examples, the gap (ΦD1-ΦD2) / 2 between the pump effect ring and the shielding sleeve is 0.3 mm to facilitate assembly and reduce machining difficulty.
[0047] In some examples, the groove depth h of the helical groove of the pump efficiency ring is 2 mm. The larger the groove depth h, the stronger the pumping capacity of the pump efficiency ring.
[0048] In some examples, the axial groove width b of the pump effect ring ranges from 3 mm to 4 mm. As the axial groove width b increases, the pumping capacity first increases and then decreases. Preferably, in some examples, the axial groove width b of the pump effect ring is 4 mm, which reduces the processing difficulty while ensuring pumping capacity.
[0049] In some examples, the pump efficiency ring can be an external spiral pump efficiency ring, that is, a pump efficiency ring with spiral channels machined only on its outer surface, suitable for water pumps with small internal space in the shielding sleeve, such as hot water circulating shielded pumps. In other examples, the pump efficiency ring can be a pump efficiency ring with an inner and outer spiral combination, that is, a pump efficiency ring composed of an inner spiral and an outer spiral, whose inner and outer spirals cooperate to achieve pumping of the medium. The inner and outer spiral combination pump efficiency ring is suitable for water pumps with large internal space in the shielding sleeve.
[0050] In some examples, the spiral groove of the pump effect ring can be rectangular. In other examples, the spiral groove of the pump effect ring can be triangular. In still other examples, the spiral groove of the pump effect ring can be trapezoidal. Preferably, in some examples, the groove of the pump effect ring is rectangular, which has the advantages of simple structure and easy manufacturing.
[0051] While the present disclosure has been described for the purposes of examples of the pump effect ring being interference-fitted onto the motor rotor and the pump effect ring being injection-molded onto the motor rotor, in other embodiments, the pump effect ring on the motor rotor in the anti-clogging assembly can employ both interference-fitting and injection molding methods simultaneously. In some examples, the pump effect ring may comprise two parts: one part of the pump effect ring is injection-molded onto one end of the motor rotor, and the other part of the pump effect ring is interference-fitted onto the outer surface of the motor rotor. The pump effect ring is injection-molded at only one end of the motor rotor, allowing the other part of the pump effect ring to be interference-fitted from the un-injected end of the motor rotor.
[0052] Another embodiment of this disclosure discloses a canned motor pump (not shown). The canned motor pump includes: a pump body with a media circulation chamber inside; and an anti-clogging component as described in any of the preceding embodiments, disposed within the media circulation chamber. When the motor rotor inside the canned motor pump rotates, it drives a pump efficiency ring to rotate, providing a pushing force to the media within the media circulation chamber, thereby promoting the flow of the media inside the rotor and preventing impurities from accumulating inside the rotor. Specifically, the canned motor pump rotates counterclockwise with a right-handed pump efficiency ring, and rotates clockwise with a left-handed pump efficiency ring. In some examples, the canned motor pump is a hot water circulation canned motor pump, wherein the pump efficiency ring is an external spiral type.
[0053] This document has been described with reference to various exemplary embodiments. However, those skilled in the art will recognize that changes and modifications can be made to the exemplary embodiments without departing from the scope of this document. While the principles of this document have been shown in various embodiments, many modifications to structures, arrangements, proportions, elements, materials, and components particularly suited to specific environments and operational requirements can be used without departing from the principles and scope of this disclosure. These modifications and other changes or alterations will be included within the scope of this document. The foregoing detailed description has been described with reference to various embodiments. However, those skilled in the art will recognize that various modifications and changes can be made without departing from the scope of this disclosure. Therefore, considerations for this disclosure are to be illustrative rather than restrictive, and all such modifications will be included within its scope. Similarly, advantages, other advantages, and solutions to problems with respect to various embodiments have been described above. However, benefits, advantages, solutions to problems, and any elements that produce these, or make them more explicit, should not be construed as critical, essential, or necessary. The term "comprising" and any other variations thereof, as used herein, are non-exclusive inclusions, meaning that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed or not part of that process, method, system, article, or apparatus. Furthermore, the term "coupling" and any other variations thereof, as used herein, refers to a physical connection, electrical connection, magnetic connection, optical connection, communication connection, functional connection, and / or any other connection.
[0054] Those skilled in the art will recognize that many changes can be made to the details of the above embodiments without departing from the basic principles of this disclosure. Therefore, the scope of this disclosure should be determined only by the claims.
Claims
1. An anti-clogging assembly, characterized in that, The anti-blocking assembly for a water pump comprises: a motor rotor; and a pump efficiency ring provided on the motor rotor for providing a pushing force to a medium in the water pump, wherein a surface of the pump efficiency ring is provided with a spiral groove.
2. The anti-jamming assembly of claim 1, wherein, comprise: a shielding sleeve for accommodating the motor rotor and the pump efficiency ring; a cover body covering the shielding sleeve.
3. The anti-jamming assembly of claim 1, wherein, The pump efficiency ring is injection molded and / or interference fitted on the motor rotor.
4. The anti-jamming assembly of claim 3, wherein, The pump efficiency ring is injection molded on one end, both ends or the middle of the motor rotor.
5. The anti-jamming assembly of claim 3, wherein, The pump efficiency ring is interference fitted on the motor rotor, which comprises that the pump efficiency ring fully or partially covers the outer surface of the motor rotor.
6. The anti-jamming assembly of claim 3, wherein, The pump efficiency ring is injection molded and interference fitted on the motor rotor, which comprises that a part of the pump efficiency ring is injection molded on one end of the motor rotor and another part of the pump efficiency ring is interference fitted on the outer surface of the motor rotor.
7. The anti-jamming assembly of claim 1, wherein, The pump efficiency ring comprises an outer spiral pump efficiency ring or an inner and outer spiral cooperation pump efficiency ring.
8. The anti-jamming assembly of claim 7, wherein, The groove type of the spiral groove of the pump efficiency ring comprises a square type, a triangular type or a ladder type.
9. The anti-jamming assembly of claim 7, wherein, The anti-blocking assembly is used for a hot water circulating shield pump, and the pump efficiency ring is an outer spiral pump efficiency ring.
10. A canned pump characterized by comprise: a pump body provided with a medium circulating cavity; The anti-blocking assembly of any one of claims 1 to 9 is provided in the medium circulating cavity, wherein the motor rotor drives the pump efficiency ring to rotate to provide a pushing force to the medium in the medium circulating cavity when the motor rotor rotates.