Double-runner impeller

Abstract

The utility model provides a double-runner impeller which comprises an upper cover (1) and a lower cover (2), a first shaft (4) is arranged at the top of the upper cover (1) in an extending mode, a second shaft (5) is arranged at the bottom of the lower cover (2) in an extending mode, the double-runner impeller is characterized in that the upper cover (1) and the lower cover (2) are fixedly connected through a shell (3), and double runners (S) are formed in an inner cavity defined by the upper cover (1), the shell (3) and the lower cover (2). A flow inlet (41) communicated with the double flow channels is formed in the first shaft (4), and flow outlets (31) communicated with the double flow channels are formed in the two sides of the shell respectively. An impeller structure is omitted, the precise actuarial and analogue simulation process is omitted, the possibility of abrasion or breakage of blades after long-time use is reduced, pumping of internal fluid media is achieved only through an inner cavity double-flow-channel structure, the pumping effect is guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] This utility model belongs to the technical field of pump impellers, specifically relating to a dual-flow-channel impeller. Background Technology

[0002] According to the description of a centrifugal pump with a dual-flow-channel impeller and flow-through components published in patent application CN212774903U (announcement date March 23, 2021), the working principle of pump equipment is that the impeller rotates, using the negative pressure at the inlet to draw in the medium to be transported, and then using the centrifugal force of the impeller to throw the medium out, thus achieving the purpose of medium transportation. The impeller rotates inside the pump to transport fluid media or to pressurize the fluid media. Due to its advantages such as high head and large flow rate, as well as symmetrical structure, no axial force, and stable operation, the dual-impeller structure has been widely used.

[0003] The flow channels between the inlet and outlet of a dual-flow-channel impeller can be configured according to requirements, which is common knowledge in the field. For example, see the dual-suction dual-flow-channel impeller disclosed in patent application CN2103039U, whose specification includes... Figure 1-2 The flow channel structure between the inlet and outlet is disclosed; see also the impeller of a double-suction, double-flow-channel sewage pump disclosed in patent application CN2859031Y, whose specification is attached. Figure 1-2 The flow channel structure between the inlet and outlet is disclosed; see also patent application CN106837855B, which discloses a double-suction, double-layer, double-flow-channel impeller and its design method, with appendix to its specification. Figure 1-2 The flow channel structure between the inlet and the outlet is disclosed.

[0004] In existing technologies, dual-impeller structures often improve pumping capacity by using different blade structures. On the one hand, precise calculations and simulations of the blades are required to improve pumping capacity. On the other hand, after long-term use, blade wear or breakage will seriously affect pumping capacity. In addition, the processing technology for blades with special shapes is also quite complex.

[0005] Therefore, there is an urgent need to provide a solution to address the defects and shortcomings of the existing technologies. Summary of the Invention

[0006] In order to overcome the defects and shortcomings of the existing technology, this utility model provides a dual-flow-channel impeller.

[0007] The specific solution provided by this utility model is as follows:

[0008] A dual-flow-channel impeller includes an upper cover and a lower cover. A first shaft extends from the top of the upper cover, and a second shaft extends from the bottom of the lower cover. The upper cover and the lower cover are fixedly connected by a housing. A dual-flow-channel is formed in the cavity enclosed by the upper cover, the housing, and the lower cover. An inlet communicating with the dual-flow-channel is provided inside the first shaft, and outlets communicating with the dual-flow-channel are respectively provided on both sides of the housing.

[0009] As a further preferred embodiment of the present invention, the second shaft has a rotating shaft hole that communicates with the dual flow channels.

[0010] As a further preferred embodiment of the present invention, the outer diameter of the first shaft is greater than the outer diameter of the second shaft, and the inner diameter of the first shaft is greater than the inner diameter of the second shaft.

[0011] As a further preferred embodiment of the present invention, the connection positions of the first shaft and the upper cover and the connection positions of the second shaft and the lower cover are rounded.

[0012] As a further preferred embodiment of this utility model, the outer edges of the upper cover and the lower cover protrude beyond the outer edge of the shell.

[0013] As a further preferred embodiment of the present invention, the outer edge of the shell is configured to be convex.

[0014] As a further preferred embodiment of the present invention, the outer edge of the shell is configured as an outwardly convex arc shape.

[0015] As a further preferred embodiment of this utility model, the dual flow channels are centrally symmetrical with respect to the axis of the impeller.

[0016] As a further preferred embodiment of this utility model, the outlets on both sides of the housing face opposite directions and are centrally symmetrical with respect to the axis of the impeller.

[0017] As a further preferred embodiment of this utility model, the axial distance between the upper cover and the lower cover gradually decreases from the direction away from the outlet to the direction closer to the outlet.

[0018] Compared with existing technologies, the technical effects that this utility model can achieve include:

[0019] 1) This utility model provides a dual-flow-channel impeller, which forms a dual-flow-channel in the inner cavity surrounded by the upper cover, the housing and the lower cover. An inlet communicating with the dual-flow-channel is opened inside the first shaft, and an outlet communicating with the dual-flow-channel is opened on both sides of the housing. This eliminates the impeller structure, which not only eliminates the precise calculation and simulation process, but also reduces the possibility of blade wear or breakage after long-term use. The pumping of the internal fluid medium is achieved solely through the dual-flow-channel structure in the inner cavity, ensuring the pumping effect and extending the service life.

[0020] 2) This utility model provides a dual-flow-channel impeller, which simplifies the processing technology and improves processing efficiency by eliminating the internal impeller structure.

[0021] 3) This utility model provides a dual-channel impeller, which can increase the flow rate of the internal fluid medium to a certain extent by eliminating the internal axially extended impeller structure, thereby improving the pumping capacity. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural view of the present invention.

[0023] Figure 2 This is a side view of the structure of this utility model.

[0024] Figure 3 This is a side sectional view of the present invention.

[0025] Figure 4 This is a bottom sectional view of the present invention. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] [First Embodiment]

[0030] like Figure 1-4 The image shows a dual-channel impeller according to the first embodiment of this utility model, including an upper cover 1 and a lower cover 2. A first shaft 4 extends from the top of the upper cover 1, and a second shaft 5 extends from the bottom of the lower cover 2. The upper cover 1 and the lower cover 2 are fixedly connected by a housing 3. A dual-channel S is formed in the inner cavity formed by the upper cover 1, the housing 3, and the lower cover 2. An inlet 41 communicating with the dual-channel is opened inside the first shaft 4, and outlets 31 communicating with the dual-channel are respectively opened on both sides of the housing. The fluid medium can flow into the inner cavity through the inlet 41, pass through the dual-channel S, and be discharged through the outlet 31. Due to its symmetrical structure, it can maintain stable operation while achieving high head and large flow rate pumping capacity. Furthermore, by eliminating the impeller structure, it eliminates the need for precise calculations and simulations, and reduces the possibility of blade wear or breakage after prolonged use. Pumping of the internal fluid medium is achieved solely through the internal dual-channel structure, ensuring pumping efficiency and extending service life. Moreover, eliminating the internal impeller structure simplifies the manufacturing process and improves processing efficiency. In addition, by eliminating the internal axially extending impeller structure, the flow rate of the internal fluid medium can be increased to some extent, thereby improving pumping capacity.

[0031] like Figure 1 As shown, a rotating shaft hole 51 communicating with the dual flow channels is provided inside the second shaft 5, so as to install a rotating shaft therein to realize the rotation drive of the impeller.

[0032] In this embodiment, as Figure 1-3 As shown, the connection positions of the first shaft 4 and the upper cover 1, and the connection positions of the second shaft 5 and the lower cover 2 are rounded to ensure stable connection and facilitate processing. In addition, the outer diameter of the first shaft 4 is larger than the outer diameter of the second shaft 5, and the inner diameter of the first shaft 4 is larger than the inner diameter of the second shaft 5, thereby maximizing the diameter of the inlet 41 to increase the pumping flow rate.

[0033] like Figure 2As shown, in this embodiment, the outer edges of the upper cover 1 and the lower cover 2 protrude from the outer edge of the shell 3 to effectively protect the internal dual-channel S-structure through the upper cover 1 and the lower cover 2; in this embodiment, the outer edge of the shell is set to be convex, preferably an convex arc shape, so as to maximize the internal fluid medium storage space and achieve good flexible contact between the fluid medium and the inside of the shell.

[0034] like Figure 4 As shown, in this embodiment, the dual flow channels S are centrally symmetrical with respect to the impeller axis, and the outlets 31 on both sides of the casing face opposite directions and are centrally symmetrical with respect to the impeller axis. Thus, through the result of symmetry, while achieving high head and large flow pumping capacity, its operational stability can be improved.

[0035] As a further preferred option, such as Figure 2 As shown, the axial distance between the upper cover 1 and the lower cover 2 gradually decreases from the direction away from the outlet 31 to the direction closer to the outlet 31, so that the fluid medium flowing out of the outlet 31 can flow out in a concentrated manner from the outlet 31 and then be pumped outward in an outward manner, thereby further increasing its pumping flow rate.

[0036] In this embodiment, during operation, the fluid medium flows into the inner cavity through the inlet 41, passes through the dual flow channels S, and is discharged through the outlet 31. Due to the symmetrical structure, it can maintain stable operation while achieving high head and large flow rate pumping capacity. At the same time, by eliminating the impeller structure, both the precise calculation and simulation process are eliminated, and the possibility of blade wear or breakage after long-term use is reduced. Pumping of the internal fluid medium is achieved solely through the internal dual flow channel structure, ensuring pumping effect and extending service life. Furthermore, by eliminating the internal impeller structure, the manufacturing process is simplified and the manufacturing efficiency is improved. In addition, by eliminating the internal axially extended impeller structure, the internal fluid medium flow rate can be increased to a certain extent, thereby improving the pumping capacity.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dual-flow-channel impeller, comprising an upper cover (1) and a lower cover (2), wherein a first shaft (4) extends from the top of the upper cover (1) and a second shaft (5) extends from the bottom of the lower cover (2), characterized in that: The upper cover (1) and the lower cover (2) are fixedly connected by a housing (3). A double flow channel (S) is formed in the cavity enclosed by the upper cover (1), the housing (3) and the lower cover (2). An inlet (41) communicating with the double flow channel is opened inside the first shaft (4), and an outlet (31) communicating with the double flow channel is opened on both sides of the housing. The double flow channel (S) is centrally symmetrical with respect to the axis of the impeller. The outlets (31) on both sides of the housing face opposite directions and are centrally symmetrical with respect to the axis of the impeller.

2. The dual-flow-channel impeller according to claim 1, characterized in that: The second shaft (5) has a rotating shaft hole (51) inside that communicates with the dual flow channels.

3. The dual-flow-channel impeller according to claim 1, characterized in that: The outer diameter of the first shaft (4) is greater than the outer diameter of the second shaft (5), and the inner diameter of the first shaft (4) is greater than the inner diameter of the second shaft (5).

4. The dual-flow-channel impeller according to claim 1, characterized in that: The connection positions of the first shaft (4) and the upper cover (1) and the connection positions of the second shaft (5) and the lower cover (2) are rounded.

5. A dual-flow-channel impeller according to claim 1, characterized in that: The outer edges of the upper cover (1) and the lower cover (2) protrude from the outer edge of the shell (3).

6. A dual-flow-channel impeller according to claim 1, characterized in that: The outer edge of the shell is configured to be convex.

7. A dual-flow-channel impeller according to claim 6, characterized in that: The outer edge of the shell is set as an outwardly convex arc shape.

8. A dual-flow-channel impeller according to claim 1, characterized in that: The axial distance between the upper cover (1) and the lower cover (2) gradually decreases from the direction away from the outlet (31) to the direction closer to the outlet (31).

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