Water pumping mechanism and water pump
The water pump, with its dual impeller structure and intermediate plate design, solves the problem of insufficient head, achieving the effect of increasing head and reducing cost without increasing drive power.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 郴州牛牛家电维修中心(个人独资)
- Filing Date
- 2025-04-14
- Publication Date
- 2026-04-10
AI Technical Summary
The existing water pumps have insufficient head, which means that when it is necessary to increase the head, a more powerful drive device is required, which increases the cost and weight.
The pump adopts a dual-impeller structure, with an intermediate plate dividing the pump body into two chambers. The first and second impellers are located in different chambers and are driven by coaxial or multi-stage connections to increase the liquid head. At the same time, the intermediate plate blocks pressure interference to prevent fluid backflow and uses multi-stage pressurization to increase the head.
Without increasing the power of the drive components, the liquid head is significantly increased, energy transfer efficiency is improved, energy loss is reduced, and equipment size and cost are reduced.
Smart Images
Figure CN224107464U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of pump especially relates to a pumping mechanism and water pump. BACKGROUND
[0002] The core function of the water pump is to transfer liquid (such as water, sewage, oil, etc.) from low to high or from one location to another by mechanical power.
[0003] At present, the existing part of water pump has the problem of insufficient lift, if the lift needs to be increased, the driving equipment with larger power is needed, which leads to the increase of the cost and the weight of the water pump. UTILITY MODEL CONTENTS
[0004] The utility model discloses a pumping mechanism and water pump to solve the technical problem of high cost and heavy weight of water pump in the related art to meet the lift.
[0005] In order to solve the above problem, the utility model adopts the following technical scheme:
[0006] Firstly, the application discloses a pumping mechanism, which comprises:
[0007] The intermediate plate is arranged in the pump body and divides the pump body into a first chamber and a second chamber, and the intermediate plate has a through hole communicating the first chamber and the second chamber; the first chamber has a water outlet, and the second chamber has a water inlet;
[0008] The first impeller is located in the second chamber and arranged close to the water inlet;
[0009] The second impeller is located in the first chamber and arranged close to the water outlet;
[0010] The driving member is connected with the first impeller and the second impeller and drives the first impeller and the second impeller to rotate.
[0011] In a further technical scheme, the intermediate plate has a protruding portion, and the first impeller is arranged in the protruding portion;
[0012] The protruding portion has a first channel penetrating therethrough, one end of the first channel communicates with the second chamber, and the other end communicates with the through hole.
[0013] In a further technical scheme, the second impeller is a plurality of, and the plurality of second impellers are arranged along the axial direction of the pump body and connected in sequence;
[0014] And / or, the first impeller and the second impeller are coaxially arranged;
[0015] And / or, the rotational speeds of the first impeller and the second impeller are the same.
[0016] In a further technical solution, the drive unit has two output shafts, one of which is connected to the first impeller and the other is connected to the second impeller;
[0017] Alternatively, the drive unit has an output shaft that connects the first impeller and the second impeller;
[0018] Alternatively, there are two driving components, each with an output shaft; the output shaft of one driving component is connected to the first impeller, and the output shaft of the other driving component is connected to the second impeller.
[0019] Secondly, this application also discloses a water pump, including a pump body and the pumping mechanism described in the first aspect; the pumping mechanism is located within the pump body.
[0020] In a further technical solution, the pump body has a throat, and a second channel is provided through the throat along its axial direction; the end of the second channel away from the pump body is the outlet, and the inner diameter of the end of the second channel closer to the pump body is larger than the inner diameter of the outlet.
[0021] The second impeller is located within the second channel.
[0022] In a further technical solution, the throat includes a constriction section and a constant cross-section section; the inner diameter of the constriction section gradually decreases from the inlet to the outlet along its axial direction, and the minimum cross-section of the constriction section is connected to the constant cross-section section;
[0023] The second impeller is located inside the contraction section.
[0024] In a further technical solution, the diameter of the first impeller is larger than the diameter of the second impeller.
[0025] In a further technical solution, the inlet includes multiple first inlet sections, which are equidistantly arranged along the circumference of the pump body on the end face of the pump body away from the throat.
[0026] And / or, the inlet also includes a plurality of second inlets, which are equidistantly arranged along the circumference of the pump body on the circumferential surface of the pump body near the first inlet.
[0027] In a further technical solution, the projections of multiple first water inlets along the pump body axis and the projections of the water outlets along the pump body axis coincide.
[0028] The technical solution adopted in this utility model can achieve the following beneficial effects:
[0029] The pumping mechanism of the present application, when pumping water, the first impeller rotates to make the liquid enter the second chamber through the water inlet, the second impeller rotates, and then the liquid in the second chamber is pumped into the first chamber, and is discharged from the water outlet, completing the pumping, and the first impeller and the second impeller both work on the liquid, thereby increasing the lift of the liquid without using a larger power driving member. The intermediate plate blocks the pressure interference between the first impeller and the second impeller, prevents the backflow of the fluid from the high-pressure area to the low-pressure area as much as possible, greatly ensures the one-way transmission of energy, and thereby increases the lift of the liquid. BRIEF DESCRIPTION OF DRAWINGS
[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0031] Figure 1 is the axial view of the pumping mechanism disclosed by some embodiments of the present application Figure 1 ;
[0032] Figure 2 is the axial view of the pumping mechanism disclosed by some embodiments of the present application Figure 2 ;
[0033] Figure 3 is the axial view of the pumping mechanism disclosed by some embodiments of the present application Figure 1 ;
[0034] Figure 4 is the top view of the pumping mechanism disclosed by some embodiments of the present application
[0035] Figure 5 is the sectional view of A-A in Figure 4 ;
[0036] Figure 6 is the enlarged view of A in Figure 5 ;
[0037] Figure 7 is the axial view of the pumping mechanism disclosed by some embodiments of the present application Figure 2 ;
[0038] Figure 8 is the axial view of the pumping mechanism disclosed by some embodiments of the present application Figure 3 .
[0039] In the drawings:
[0040] 110-first impeller, 120-second impeller, 130-driving member
[0041] 200-pump body, 210-throat, 211-constriction, 212-equal cross-section part, 213-second channel, 214-water outlet, 220-water inlet, 221-first water inlet part, 222-second water inlet part, 230-intermediate plate, 231-protrusion, 232-through hole, 233-first channel, 240-first chamber, 250-second chamber. DETAILED DESCRIPTION
[0042] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.
[0043] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, not to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" and the like are generally of a kind, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in a "or" relationship.
[0044] The utility model will be described in detail below in combination with the accompanying Figures 1 to 8 A water pumping mechanism and a water pump are described in detail by specific embodiments and their application scenarios.
[0045] Some embodiments of the present application disclose a water pump, comprising an intermediate plate 230, a first impeller 110, a second impeller 120 and a driving member 130.
[0046] As shown in Figures 4-8 The intermediate plate 230 is arranged in the pump body 200, and the pump body 200 is divided into a first chamber 240 and a second chamber 250, and the intermediate plate 230 has a through hole 232 communicating the first chamber 240 and the second chamber 250, the first chamber 240 has a water outlet 214, and the second chamber 250 has a water inlet 220. Liquid enters the second chamber 250 through the water inlet 220, and enters the first chamber 240 through the through hole 232, and is finally discharged from the first chamber 240 through the water outlet 214.
[0047] As shown in Figure 5 and Figure 6As shown, the first impeller 110 is located in the second chamber 250 and is arranged close to the water inlet 220; the second impeller 120 is located in the first chamber 240 and is arranged close to the water outlet 214. The first impeller 110 rotates to make the liquid enter the second chamber 250 through the water inlet 220, and the second impeller 120 rotates to further draw the liquid in the second chamber 250 into the first chamber 240 and discharge the liquid from the water outlet 214, thus completing the water pumping, and the first impeller 110 and the second impeller 120 both work on the liquid, thereby increasing the lift of the liquid without using a driving member 130 with larger power. The intermediate plate 230 blocks the pressure interference between the first impeller 110 and the second impeller 120, prevents the fluid in the high-pressure area from flowing back to the low-pressure area as much as possible, and largely ensures the one-way transmission of energy, thereby increasing the lift of the liquid.
[0048] As shown in Figure 3 , Figure 7 and Figure 8 , the driving member 130 is connected with the first impeller 110 and the second impeller 120 and drives the first impeller 110 and the second impeller 120 to rotate. The driving member 130 provides power for the rotation of the first impeller 110 and the second impeller 120. When the first impeller 110 rotates, a low-pressure area is formed, and the liquid enters the second chamber 250 under the action of water pressure, realizing continuous water pumping. Moreover, the rotation of the first impeller 110 also applies a centrifugal force to the liquid, driving the liquid to enter the first chamber 240 through the through hole 232. When the second impeller 120 rotates, the kinetic energy of the liquid in the first chamber 240 is increased, and the liquid is discharged from the water outlet 214.
[0049] In this embodiment, the driving member 130 is located in the first chamber 240 or the second chamber 250, and the liquid flowing in the first chamber 240 and the second chamber 250 can also cool the driving member 130, thereby reducing the temperature of the driving member 130.
[0050] As preferred in this embodiment, the driving member 130 is located in the first chamber 240. By arranging the driving member 130 in the first chamber 240, the volume of the second chamber 250 can be reduced, thereby reducing the water pressure of the liquid close to the bottom position in the second chamber 250, so that the liquid is more easily entered into the second chamber 250.
[0051] As preferred in this embodiment, the driving member 130 is a waterproof motor to ensure the normal operation of the driving member 130 in the pump body 200.
[0052] As shown in Figure 8As shown, the intermediate plate 230 has a protruding portion 231 with a first passage 233 therethrough, one end of the first passage 233 being in communication with the second chamber 250 and the other end being in communication with the through hole 232. When the first impeller 110 rotates, the liquid in the second chamber 250 is driven to enter the first chamber 240 in sequence through the first passage 233 and the through hole 232.
[0053] As shown in Figure 7 and Figure 8 , the first impeller 110 is arranged to rotate in the protruding portion 231. The protruding portion 231 extends as a flow channel, directing the liquid in the second chamber 250 through the first passage 233 to the through hole 232, avoiding direct impact of the liquid on the intermediate plate 230 causing energy loss. Before the fluid enters the through hole 232 through the first passage 233, it has been preliminarily accelerated by the first impeller 110, forming a pre-boosting area, and the through hole 232 serves as an inter-stage transition, balancing the pressure difference between the first chamber 240 and the second chamber 250, and reducing inter-stage impact loss.
[0054] As shown in Figure 3 , the second impeller 120 is a plurality of second impellers 120 arranged in the axial direction of the pump body 200 and connected in sequence. The design of arranging and connecting the plurality of second impellers 120 in the axial direction of the pump body 200 in sequence improves the total head by multi-stage series boosting while maintaining a compact structure.
[0055] As shown in Figure 3 , Figure 7 and Figure 8 , the first impeller 110 and the second impeller 120 are coaxially arranged. The coaxial arrangement of the first impeller 110 and the second impeller 120 ensures that the liquid does not lose capacity due to turning or other reasons when passing through the first impeller 110 and the second impeller 120, thereby optimizing the pressure of the liquid.
[0056] The rotational speeds of the first impeller 110 and the second impeller 120 are the same. The same rotational speeds of the first impeller 110 and the second impeller 120 ensure the synchronization of multi-stage boosting and the efficiency of energy transmission: by unifying the rotational speeds, the centrifugal force of the first impeller 110 and the second impeller 120 is strictly matched with the liquid acceleration process, avoiding pressure fluctuations or energy cancellation due to speed differences, thereby optimizing the head stacking efficiency.
[0057] In some embodiments, the driving member 130 has two output shafts, one of which is connected to the first impeller 110 and the other of which is connected to the second impeller 120. The driving member 130 drives the first impeller 110 and the second impeller 120 to rotate respectively through the two output shafts to boost the liquid.
[0058] In some embodiments, the driving member 130 has one output shaft, and the output shaft is connected with the first impeller 110 and the second impeller 120. The driving member 130 drives the first impeller 110 and the second impeller 120 to rotate by connecting the output shaft with the first impeller 110 and the second impeller 120, so as to pressurize the liquid.
[0059] In some embodiments, the driving member 130 is two, and each has an output shaft; one output shaft of the driving member 130 is connected with the first impeller 110, and the other output shaft of the driving member 130 is connected with the second impeller 120. The two driving members 130 are connected with the first impeller 110 and the second impeller 120 respectively, so as to drive the first impeller 110 and the second impeller 120 to rotate, so as to pressurize the liquid.
[0060] In the embodiment, the driving member 130 has two output shafts. Although the other two schemes can also drive the first impeller 110 and the second impeller 120 to rotate, the scheme that the driving member 130 has one output shaft needs to be arranged outside the pump body 200, which increases the volume of the water pump; the scheme that the driving member 130 is two can be arranged inside the pump body 200, but it occupies more space inside the pump body 200. Therefore, in the embodiment, the driving member 130 has two output shafts, which can be arranged inside the pump body 200 to reduce the volume of the water pump, and can also avoid the driving member 130 occupying too much space inside the pump body 200.
[0061] Some embodiments of the present application disclose a water pump, which comprises a pump body 200 and a water pumping mechanism.
[0062] As shown in Figure 1 , Figure 2 and Figure 5 , the pump body 200 has a throat 210, and the throat 210 is provided with a second channel 213 penetrating the throat 210 along the axial direction of the throat 210, and the second impeller 120 is arranged in the second channel 213. The liquid in the first chamber 240 is pressurized by the second impeller 120 and then discharged out of the pump body 200 through the second channel 213.
[0063] As shown in Figure 4 and Figure 5 , the second channel 213 has a water outlet 214 at the end away from the pump body 200, and the inner diameter of the end of the second channel 213 close to the pump body 200 is greater than the inner diameter of the water outlet 214. By making the inner diameter of the end of the second channel 213 close to the pump body 200 greater than the inner diameter of the water outlet 214, the flow speed of the liquid in the second channel 213 can be increased, and the response speed of the water pump can be significantly improved.
[0064] As shown in Figure 5As shown, the throat 210 comprises a converging section 211 and a constant section 212; the converging section 211 gradually decreases in inner diameter along its axial direction from the water inlet 220 to the water outlet 214, and the converging section 211 is connected with the constant section 212 at the smallest cross section thereof. The converging section 211 can increase the flow speed of the liquid, and the constant section 212 maintains the stable flow state of the fluid after the smallest cross section of the throat 210, avoids the turbulence and energy loss caused by the sudden change of cross-sectional area by fixing the inner diameter, and ensures the uniform distribution of the kinetic energy of the high-speed fluid.
[0065] In the present embodiment, the first impeller 110 is arranged in the converging section 211. Although the converging section 211 can increase the flow speed of the liquid, the liquid will lose part of the pressure in the converging section 211. Therefore, by arranging the first impeller 110 in the converging section 211, the lost pressure of the liquid can be compensated for, ensuring that the water pressure at the water outlet 214 is sufficient, thereby increasing the lift of the liquid.
[0066] As shown, Figure 3 The diameter of the first impeller 110 is greater than the diameter of the second impeller 120. By making the diameter of the first impeller 110 greater than the diameter of the second impeller 120, a larger low-pressure area can be generated when the first impeller 110 rotates, thereby causing more liquid to be sucked into the second cavity 250 through the water inlet 220. Moreover, the larger size of the first impeller 110 can generate a stronger centrifugal force to enable the liquid to smoothly pass through the first channel 233 and the through hole 232 into the first cavity 240.
[0067] As shown, Figure 1 and Figure 6 The water inlet 220 comprises a plurality of first water inlets 221, which are arranged equidistantly along the circumference of the pump body 200 on the end surface of the pump body 200 away from the throat 210. Since the first water inlets 221 are arranged on the end surface of the pump body 200 away from the throat 210, the dependence of the water pump on the water suction height is significantly reduced, enabling the water pump to operate efficiently and stably in a shallow water environment. Moreover, the plurality of equidistantly arranged first water inlets 221 can eliminate the flow deviation phenomenon of unilateral water inlet, enabling the liquid to enter the second cavity uniformly and reducing the local turbulence intensity.
[0068] As shown, Figure 1 and Figure 6 The water inlet 220 further comprises a plurality of second water inlets 222, which are arranged equidistantly along the circumference of the pump body 200 on the circumferential surface of the pump body 200 close to the first water inlets 221. By equidistantly arranging the plurality of second water inlets 222 on the circumferential surface of the pump body 200 close to the first water inlets 221, the total flow area of the water inlet 220 is expanded, thereby enabling more liquid to be sucked into the second cavity 250 within a unit time.
[0069] As shown, Figure 1and Figure 6 As shown, the projection of the plurality of first water inlets 221 along the axial direction of the pump body 200 coincides with the projection of the water outlet 214 along the axial direction of the pump body 200. By the projection of the plurality of first water inlets 221 along the axial direction of the pump body 200 coinciding with the projection of the water outlet 214 along the axial direction of the pump body 200, when the liquid enters the second chamber 250 from the first water inlets 221 and is discharged from the first chamber 240 through the water outlet 214, the liquid will not reduce the pressure due to the turning, etc., thereby increasing the lift of the liquid.
[0070] It should be noted that the terms "comprising," "including," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.
[0071] In addition, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing functions in the order shown or discussed, and can include performing functions in a substantially simultaneous manner or in the reverse order, for example, the described methods can be performed in other than the order described, and additional, fewer, or different steps can be added, omitted, or combined. In addition, features described with reference to certain examples can be combined in other examples.
[0072] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A water pumping mechanism, characterized by, The utility model relates to a pump, comprising: a middle plate arranged in the pump body to divide the pump body into a first chamber and a second chamber, and the middle plate has a through hole communicating the first chamber and the second chamber; the first chamber has a water outlet, and the second chamber has a water inlet; a first impeller arranged in the second chamber and close to the water inlet; a second impeller arranged in the first chamber and close to the water outlet; a driving member connected with the first impeller and the second impeller and driving the first impeller and the second impeller to rotate.
2. A water pumping mechanism according to claim 1, wherein The middle plate has a protruding part, and the first impeller is arranged in the protruding part; the protruding part has a first channel penetrating through, one end of the first channel communicates with the second chamber, and the other end of the first channel communicates with the through hole.
3. A water pumping mechanism as claimed in claim 1, wherein, The second impeller is a plurality of second impellers arranged along the axial direction of the pump body and connected in sequence; and / or, the first impeller and the second impeller are coaxially arranged; and / or, the rotation speeds of the first impeller and the second impeller are the same.
4. A water pumping mechanism according to claim 3, wherein The driving member has two output shafts, one of which is connected with the first impeller, and the other of which is connected with the second impeller; or, the driving member has one output shaft connected with the first impeller and the second impeller; or, the driving member is two and has output shafts respectively; one of the output shafts of the driving member is connected with the first impeller, and the output shaft of the other driving member is connected with the second impeller.
5. A water pump characterized by The pump comprises a pump body and the water pumping mechanism of any one of claims 1-4; the water pumping mechanism is arranged in the pump body.
6. A submersible pump according to claim 5, wherein The pump body has a throat, and the throat is provided with a second channel penetrating through the throat along the axial direction of the throat; one end of the second channel away from the pump body is the water outlet, and the inner diameter of the end of the second channel close to the pump body is greater than the inner diameter of the water outlet; wherein, the second impeller is arranged in the second channel.
7. A submersible pump according to claim 6, wherein The throat comprises a contraction part and an equal cross-section part; the inner diameter of the contraction part gradually decreases from the water inlet to the water outlet along the axial direction of the contraction part, and the contraction part is connected with the equal cross-section part at the smallest cross-section; wherein, the second impeller is arranged in the contraction part.
8. A submersible pump according to claim 7, wherein The diameter of the first impeller is greater than the diameter of the second impeller.
9. A submersible pump according to claim 7, wherein The water inlet comprises a plurality of first water inlets, and the plurality of first water inlets are equidistantly arranged on the end surface of the pump body away from the throat along the circumferential direction of the pump body; and / or, the water inlet further comprises a plurality of second water inlets, and the plurality of second water inlets are equidistantly arranged on the circumferential surface of the pump body close to the first water inlets along the circumferential direction of the pump body.
10. A submersible pump according to claim 9, wherein The projection of the plurality of first water inlets along the axial direction of the pump body coincides with the projection of the water outlet along the axial direction of the pump body.