A transfer pump for industrial waste liquid treatment systems

Abstract

This invention discloses a transfer pump for an industrial wastewater treatment system, comprising a volute (10), an impeller (20), an outlet pipe, and a rotating shaft. The impeller includes a chassis (21), a protective cover (22), and blades (23). The volute comprises an annular body (11), a helical involute section (12), and an inner surface (13). The annular body has an outer radius R1 and an inner radius R2, where R1 - R2 = T. The inner circumferential surface of the annular body is provided with a helical involute section, which has an inner surface profile. The radially inner end of the helical involute section is embedded in the impeller cavity. That is, the inner radius of the helical involute section is smaller than the inner radius of the chassis and the protective cover. Furthermore, the axial sides of the helical involute section are rotary-sealed with the end faces of the chassis and the protective cover, respectively. Compared to the existing volute and impeller configuration, the transfer pump of this invention effectively reduces flow and pressure losses, thereby improving the efficiency of the transfer pump.

Description

Technical Field

[0001] This invention relates to the field of industrial waste liquid treatment system technology, and more specifically to a transfer pump for industrial waste liquid treatment systems. Background Technology

[0002] Existing transfer pumps for industrial wastewater treatment systems include a volute, a centrifugal impeller, an outlet pipe, and a rotating shaft. The impeller is installed inside the volute and mounted on the rotating shaft, which is connected to a motor. The outlet pipe is radially arranged on the volute. The impeller includes a base, a protective cover, and blades. Multiple blades are evenly distributed circumferentially and connected between the protective cover and the base. The inner wall of the volute is helically involute, and there is a gap between the outer circumference of the impeller and the inner wall of the volute. However, existing transfer pumps still suffer from significant flow and pressure losses and low efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a transfer pump for industrial waste liquid treatment systems. Through the improved design of the volute, compared with the existing volute and impeller matching structure, it can effectively reduce flow and pressure loss, thereby improving the efficiency of the transfer pump.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A pump for an industrial wastewater treatment system includes a volute (10), a centrifugal impeller (20), an outlet pipe (30), and a rotating shaft (40). The impeller is installed inside the volute and on the rotating shaft, which is connected to a motor. The outlet pipe is radially arranged on the volute. The impeller includes a base (21), a protective cover (22), and blades (23). Multiple blades are evenly distributed circumferentially and connected between the protective cover and the base. The volute (10) is characterized by having an annular body (11), a helical involute section (12), and an inner surface (13). The annular body has an outer radius R1 and an inner radius R2. R2=T, the thickness T is basically constant, a spiral involute section is provided on the inner circumferential surface of the annular body, the spiral involute section protrudes from the annular body, the spiral involute section has an inner side surface, the profile of the inner side surface is a spiral involute line, the spiral involute section and the outer circumference of the impeller form a volute flow channel, the radial inner end of the spiral involute section is embedded in the impeller cavity, that is, the inner radius of the spiral involute section (12) is smaller than the outer radius of the chassis (21) and the shield (22), and the two axial sides of the spiral involute section are respectively rotated and sealed with the end faces of the chassis and the shield.

[0006] Furthermore, at least within a circumferential range of 300° or more (e.g., 330-360°), the inner radius of the spiral involute portion (12) is smaller than the outer radius of the chassis (21) and the shield (22).

[0007] Furthermore, the inner surface (13) of the spiral involute portion (12) is provided with a first rectifier portion (14), which is wavy in shape arranged along the axial direction and extends circumferentially.

[0008] Furthermore, a second rectifier (24) is provided on the outer periphery of the blade (23), and the second rectifier is wavy in shape along the axial direction.

[0009] Furthermore, the troughs of the second rectifier (24) are aligned with / correspond to the peaks of the first rectifier (14).

[0010] Furthermore, a sealing part (15) is provided on the first axial side of the spiral involute portion (12), and a sealing part (15) is also provided on the other axial side. The sealing part is wavy in the radial direction and extends circumferentially.

[0011] Furthermore, the first and second axial sides of the spiral involute portion (12) are parallel to the chassis and the side of the cover, and the angle between the first and second axial sides and the rotation axis of the centrifugal impeller (20) is 75-90°.

[0012] Furthermore, the outer radius of the chassis (21) and the protective cover (22) is greater than the inner radius of the spiral involute portion (12), and the inner radius of the spiral involute portion is greater than the outer radius of the blade (23).

[0013] This invention discloses a transfer pump for an industrial wastewater treatment system. Through an improved volute design, compared to existing volute and impeller configurations, it effectively reduces flow and pressure losses, thereby improving pump efficiency. The design of the first and / or second rectifier sections enhances the rectification effect within the volute flow channel, reducing turbulence. Furthermore, the sealing design improves the sealing effect between the axial side of the helical involute section and the chassis and protective cover, reducing leakage. These improvements further reduce flow and pressure losses, thereby increasing pump efficiency. Attached Figure Description

[0014] Figure 1 This is a partial structural diagram of the transfer pump used in the industrial waste liquid treatment system of the present invention;

[0015] Figure 2 This is a partial structural diagram of the transfer pump used in the industrial waste liquid treatment system of the present invention;

[0016] Figure 3 This is a partial structural diagram of the transfer pump used in the industrial waste liquid treatment system of the present invention.

[0017] In the figure: volute 10, centrifugal impeller 20, outlet pipe 30, rotating shaft 40, annular body 11, spiral involute part 12, inner side 13, first rectifier part 14, sealing part 15, chassis 21, protective cover 22, blade 23, second rectifier part 24. Detailed Implementation

[0018] To make the technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of the present invention, and are only used to explain the present invention, not to limit the present invention. It should be noted that, for ease of description, only the parts / structures related to the present invention are shown in the accompanying drawings. Other related parts can be referred to with ordinary design. In the absence of conflict, the embodiments and technical features in the embodiments of the present invention can be combined with each other to obtain new embodiments.

[0019] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention. Furthermore, unless otherwise defined, the technical or scientific terms used in the description of this invention should have the ordinary meaning understood by those skilled in the art.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] like Figure 1-3 As shown, a transfer pump for an industrial wastewater treatment system includes a volute 10, a centrifugal impeller 20, an outlet pipe 30, and a rotating shaft 40. The impeller 20 is installed inside the volute 10 and on the rotating shaft 40, which is connected to a motor. The outlet pipe 30 is radially arranged on the volute 10. The impeller 20 includes a base 21, a protective cover 22, and blades 23. Multiple blades 23 are evenly distributed circumferentially and connected between the protective cover 22 and the base 21. The volute 10 is characterized by having an annular body portion 11, a helical involute portion 12, and an inner surface 13. The annular body portion 11 has an outer radius R1 and an inner radius R2, where R1- R2=T, the thickness T is basically constant, a spiral involute section 12 is provided on the inner circumferential surface of the annular body part 11, the spiral involute section 12 protrudes from the annular body part 11, the spiral involute section 12 has an inner side surface 13, the profile of the inner side surface 13 is a spiral involute line, the spiral involute section 12 and the outer circumference of the impeller 20 form a volute flow channel, the radially inner end of the spiral involute section 12 is embedded in the cavity of the impeller 20, that is, the inner radius of the spiral involute section 12 is smaller than the outer radius of the chassis 21 and the protective cover 22, and the two axial sides of the spiral involute section 12 are respectively rotated and sealed with the end faces of the chassis 21 and the protective cover 22.

[0022] Furthermore, at least within a circumferential range of 300° or more (e.g., 330-360°), the inner radius of the spiral involute portion 12 is smaller than the outer radius of the chassis 21 and the protective cover 22.

[0023] The present invention discloses a transfer pump for an industrial waste liquid treatment system. Through an improved design of the volute 10, specifically, a helical involute portion 12 protrudes from the annular body portion 11, and the radially inner end of the helical involute portion 12 is embedded in the impeller 20 cavity. That is, the inner radius of the helical involute portion 12 is smaller than the outer radius of the chassis 21 and the protective cover 22, and the two axial sides of the helical involute portion 12 are respectively rotary sealed with the chassis 21 and the protective cover 22. Compared with the existing volute and impeller matching structure, this design can effectively reduce flow and pressure loss, thereby improving the efficiency of the transfer pump.

[0024] Furthermore, such as Figure 3 As shown, a first rectifying part 14 is provided on the inner surface 13 of the spiral involute portion 12. The first rectifying part 14 is wavy in shape arranged along the axial direction and extends in the circumferential direction.

[0025] A second rectifier 24 is provided on the outer peripheral side / outer peripheral surface of the blade 23. The second rectifier 24 is wavy and arranged along the axial direction.

[0026] The present invention, through the design of the first rectifier 14 and / or the second rectifier 24, can improve the rectification effect in the volute flow channel and reduce turbulence, thereby further reducing flow and pressure loss and thus improving the efficiency of the delivery pump.

[0027] Furthermore, the troughs of the second rectifier section 24 are aligned with / correspond to the peaks of the first rectifier section 14.

[0028] A sealing portion 15 is provided on the first axial side of the helical involute section 12, and a sealing portion 15 is also provided on the other axial side. The sealing portion 15 is wavy in shape arranged radially and extends circumferentially. Through the design of the sealing portion 15, the sealing effect between the axial side of the helical involute section 12 and the chassis 21 and the protective cover 22 can be improved, reducing leakage, thereby further reducing flow and pressure loss, and thus improving the efficiency of the delivery pump.

[0029] The first and second sides of the spiral involute section 12 are parallel to the sides of the chassis 21 and the guard 22, and the angle between the first and second sides and the rotation axis of the centrifugal impeller 20 is 75-90°.

[0030] The outer radius of the chassis 21 and the protective cover 22 is greater than the inner radius of the spiral involute portion 12, and the inner radius of the spiral involute portion 12 is greater than the outer radius of the blade 23.

[0031] The present invention discloses a transfer pump for an industrial waste liquid treatment system. Through an improved design of the volute 10, specifically, a helical involute portion 12 protrudes from the annular body portion 11, and the radially inner end of the helical involute portion 12 is embedded in the impeller 20 cavity. That is, the inner radius of the helical involute portion 12 is smaller than the outer radius of the chassis 21 and the protective cover 22, and the two axial sides of the helical involute portion 12 are respectively rotary sealed with the chassis 21 and the protective cover 22. Compared with the existing volute and impeller matching structure, this design can effectively reduce flow and pressure loss, thereby improving the efficiency of the transfer pump.

[0032] The present invention, through the design of the first rectifier 14 and / or the second rectifier 24, can improve the rectification effect within the volute flow channel, reduce turbulence, and thus further reduce flow and pressure losses, thereby improving the efficiency of the delivery pump. Through the design of the sealing part 15, the sealing effect between the axial side of the helical involute part 12 and the chassis 21 and the protective cover 22 can be improved, reducing leakage, thereby further reducing flow and pressure losses, and thus improving the efficiency of the delivery pump.

[0033] The above embodiments are illustrative of the present invention and not intended to limit the invention. It is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transfer pump for an industrial wastewater treatment system, comprising a volute (10), a centrifugal impeller (20), an outlet pipe (30), and a rotating shaft (40), wherein the impeller is installed inside the volute and on the rotating shaft, the rotating shaft being connected to a motor for transmission, the outlet pipe being radially arranged on the volute, and the impeller comprising a base (21), a protective cover (22), and blades (23), wherein multiple blades are evenly distributed circumferentially and connected between the protective cover and the base; characterized in that: The volute (10) includes an annular body (11), a spiral involute (12), and an inner side (13). The annular body has an outer radius R1 and an inner radius R2, R1-R2=T, and the thickness T is basically constant. The spiral involute is provided on the inner circumferential surface of the annular body. The spiral involute protrudes from the annular body and has an inner side. The profile of the inner side is a spiral involute. The spiral involute and the outer circumference of the impeller form a volute flow channel. The radial inner end of the spiral involute is embedded in the impeller cavity. That is, the inner radius of the spiral involute (12) is smaller than the outer radius of the chassis (21) and the shield (22). The two axial sides of the spiral involute are respectively rotated and sealed with the end faces of the chassis and the shield. At least within a circumferential range of 300° or more, the inner radius of the spiral involute portion (12) is smaller than the outer radius of the chassis (21) and the protective cover (22); The inner surface (13) of the spiral involute portion (12) is provided with a first rectifier (14), which is wavy in shape arranged along the axial direction and extends circumferentially.

2. The transfer pump for an industrial wastewater treatment system as described in claim 1, characterized in that, The outer periphery of the blade (23) is provided with a second rectifier (24), which is wavy in shape along the axial direction.

3. The transfer pump for an industrial wastewater treatment system as described in claim 2, characterized in that, The trough of the second rectifier (24) is aligned with the peak of the first rectifier (14).

4. A transfer pump for an industrial wastewater treatment system as described in claim 3, characterized in that, The spiral involute portion (12) has a sealing portion (15) on its first axial side and a sealing portion (15) on its other axial side. The sealing portion is wavy in the radial direction and extends circumferentially.

5. A transfer pump for an industrial wastewater treatment system as described in claim 3, characterized in that, The first and second sides of the spiral involute section (12) are parallel to the chassis and the side of the cover, and the angle between the first and second sides and the rotation axis of the centrifugal impeller (20) is 75-90°.

6. A transfer pump for an industrial wastewater treatment system as described in claim 3, characterized in that, The outer radius of the chassis (21) and the shield (22) is greater than the inner radius of the spiral involute section (12), and the inner radius of the spiral involute section is greater than the outer radius of the blade (23).

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