A pump having a defoaming and liquid delivery function

Abstract

The present application belongs to the technical field of pump, especially relates to a pump with defoaming and liquid conveying functions, comprising a driving device, a pump body, a liquid conveying impeller and a defoaming impeller. The driving device is drivingly connected with a driving shaft. The driving device is fixedly connected with the pump body, and the driving shaft extends into the pump body and is coaxially arranged with the pump body. The lower end of the pump body is provided with a liquid suction inlet and a liquid discharge outlet, and the top of the pump body is provided with a bubble suction inlet and a bubble discharge outlet. The liquid conveying impeller is fixedly connected with the lower end of the driving shaft, and the liquid suction inlet and the liquid discharge outlet are both communicated to the liquid conveying impeller. The defoaming impeller is fixedly connected with the root of the driving shaft, and the bubble suction inlet and the bubble discharge outlet are both communicated to the defoaming impeller. The pump is suitable for conveying lye, can simultaneously perform defoaming and liquid conveying work, and thus reduces the equipment cost and maintenance cost.

Description

Technical Field

[0001] This invention belongs to the field of pump technology, and in particular relates to a pump with defoaming and liquid transport functions. Background Technology

[0002] In existing technologies, some alkaline solutions exhibit bubbling during production. Therefore, the delivery of alkaline solutions requires both a pump with liquid transfer capabilities and a defoamer or a defoaming pump with defoaming capabilities. Consequently, factories need to use both liquid transfer pumps and defoamers or defoaming pumps for the delivery of alkaline solutions, resulting in high equipment and production costs. Furthermore, equipment maintenance and installation during production are cumbersome, and the delivery operation is complex. Summary of the Invention

[0003] The purpose of this invention is to provide a pump with defoaming and liquid delivery functions, aiming to solve the technical problem that there is a lack of pumps with both defoaming and liquid delivery functions in the prior art.

[0004] To achieve the above objectives, embodiments of the present invention provide a pump with defoaming and liquid delivery functions, comprising:

[0005] A driving device, wherein the driving device is driven and connected to a driving shaft;

[0006] A pump body, wherein the drive device is fixedly connected to the pump body, and the drive shaft extends into the pump body and the two are coaxially arranged; the lower end of the pump body is provided with a liquid inlet and a liquid outlet, and the top of the pump body is provided with an air bubble inlet and an air bubble outlet;

[0007] A liquid conveying impeller is fixedly connected to the lower end of the drive shaft, and both the liquid inlet and the liquid outlet are connected to the liquid conveying impeller; and

[0008] A defoaming impeller is fixedly connected to the root of the drive shaft, and both the bubble inlet and the bubble outlet are connected to the defoaming impeller.

[0009] Optionally, the top of the pump body is provided with a first pump chamber, and the defoaming impeller is housed in the first pump chamber; the bubble inlet and the bubble outlet are both connected to the first pump chamber, and the bubble outlet is located on the outer periphery of the defoaming impeller, with the defoaming impeller corresponding to the top of the bubble inlet.

[0010] Optionally, the upper end of the first pump chamber is provided with an upper cover ring, and the lower end is provided with a lower cover ring, and the drive shaft passes through the upper cover ring and the lower cover ring in sequence.

[0011] Optionally, a first raised rib is provided on the top surface of the defoaming impeller along its periphery, and a first annular groove is provided on the top of the first pump cavity along its circumference, with one ring of the first raised rib extending into one ring of the first annular groove.

[0012] Optionally, a plurality of the bubble inlets and / or a plurality of the bubble outlets are evenly distributed along the circumference of the pump body; the bubble inlets and / or the bubble outlets are strip-shaped holes that extend along the circumference of the pump body.

[0013] Optionally, the lower end of the pump body is provided with a second pump chamber, the liquid conveying impeller is disposed in the second pump chamber, the liquid outlet and the liquid inlet are both connected to the second pump chamber, the liquid outlet is located on the outer periphery of the liquid conveying impeller, and the liquid inlet is located below the liquid conveying impeller; the top of the second pump chamber narrows inward to form a second annular groove; the top surface of the liquid conveying impeller corresponds to the lower end surface of the second annular groove; a second rib is provided on the top surface along the periphery of the liquid conveying impeller, and the second rib extends into the second annular groove.

[0014] Optionally, the connection between the pump body and the second pump chamber is provided with an inwardly protruding annular wall, the inner periphery of which extends upward to form an inner tube, through which the drive shaft passes.

[0015] Optionally, a stepped portion is provided at the root of the drive shaft along its circumference, and a threaded sleeve is provided below the stepped portion, the threaded sleeve being threaded onto the drive shaft; the defoaming impeller is sleeved on the drive shaft and its upper end is limited to the stepped portion, the lower end face of the defoaming impeller and the upper end face of the threaded sleeve abut against each other and a first sealing ring is provided between them.

[0016] Optionally, a bushing is fitted on the drive shaft, and the two ends of the drive shaft extend to the liquid conveying impeller and the threaded sleeve, respectively. The threaded sleeve is fitted on the upper end of the bushing, and a second sealing ring is provided between the two.

[0017] Optionally, a filter screen is provided at the liquid inlet, and the periphery of the filter screen is fixed on a screw-on cap ring, which is screwed onto the inner circumference of the bottom of the pump body.

[0018] The pump with defoaming and liquid conveying functions provided in this invention embodiment has at least one of the following technical effects: When the pump is working, liquid is drawn in through the inlet, the liquid conveying impeller transfers mechanical energy to the conveyed liquid, and the liquid is discharged from the outlet; simultaneously, foam on the liquid surface is drawn in through the bubble inlet, defoamed by the defoaming impeller, and discharged from the bubble outlet. This pump is suitable for conveying alkaline solutions and can perform defoaming and liquid conveying simultaneously, thereby reducing equipment and maintenance costs and making installation and maintenance more convenient. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A front view of a pump with defoaming and liquid delivery functions provided for an embodiment of the present invention.

[0021] Figure 2 The top view of a pump with defoaming and liquid delivery functions provided in an embodiment of the present invention.

[0022] Figure 3 For along Figure 2 The cross-sectional view of line AA shown.

[0023] Figure 4 for Figure 3 A magnified view of region B shown in the diagram. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the embodiments of the present invention, it should be understood that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, inside, outside, etc., the orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the embodiments of the present invention and simplifying the description, and is not intended to 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, it should not be construed as a limitation of the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In the embodiments of the present invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0028] In one embodiment of the present invention, such as Figures 1-3 As shown, a pump with defoaming and liquid conveying functions is provided, including a drive unit 1, a pump body 2, a liquid conveying impeller 3, and a defoaming impeller 4. The drive unit 1 is driven by a drive shaft 5. In some preferred embodiments, the drive unit 1 is preferably an electric motor, and the drive shaft 5 is the motor shaft. The pump body 2 is pipe-shaped. The drive unit 1 is fixedly connected to the pump body 2, and the drive shaft 5 extends into the pump body 2 and the two are coaxially arranged. The lower end of the pump body 2 is provided with a liquid inlet 23 and a liquid outlet 24, and the top of the pump body 2 is provided with an air bubble inlet 21 and an air bubble outlet 22. The liquid conveying impeller 3 is fixedly connected to the lower end of the drive shaft 5, and both the liquid inlet 23 and the liquid outlet 24 are connected to the liquid conveying impeller 3. The defoaming impeller 4 is fixedly connected to the root of the drive shaft 5, and both the air bubble inlet 21 and the air bubble outlet 22 are connected to the defoaming impeller 4.

[0029] When the pump is working, liquid is drawn in through the suction port 23, and the liquid conveying impeller 3 transfers mechanical energy to the liquid being conveyed. The liquid is then discharged from the discharge port 24. Simultaneously, foam on the liquid surface is drawn in through the bubble suction port 21, defoamed by the defoaming impeller 4, and discharged from the bubble discharge port 22. This pump is suitable for conveying alkaline solutions and can perform defoaming and liquid conveying simultaneously, thereby reducing equipment and maintenance costs and making installation and maintenance more convenient.

[0030] In some embodiments of the present invention, such as Figure 1 As shown, to optimize the rate and effect of bubble intake and discharge, the pump has multiple bubble intake ports 21 and / or multiple bubble discharge ports 22 evenly distributed along the circumference of the pump body 2. The bubble intake ports 21 and / or bubble discharge ports 22 are strip-shaped holes that extend along the circumference of the pump body 2.

[0031] In another embodiment of the invention, such as Figure 1 As shown, the pump body 2 of the pump is provided with a pressure relief hole 29 for pressure relief inside the pump body 2.

[0032] In another embodiment of the invention, such as Figure 3 As shown, the pump body 2 of the pump has a first pump chamber 25 at its top, and the defoaming impeller 4 is housed within the first pump chamber 25. Both the bubble inlet 21 and the bubble outlet 22 are connected to the first pump chamber 25, and the bubble outlet 22 is located on the outer periphery of the defoaming impeller 4, with the defoaming impeller 4 positioned above the bubble inlet 21. Bubbles are drawn in from the bubble inlet 21, upwards into the defoaming impeller 4, and after being defoamed by the defoaming impeller 4, are ejected from the bubble outlet 22.

[0033] In another embodiment of the invention, such as Figure 3 As shown, the first pump chamber 25 of the pump has an upper cover ring 26 at its upper end and a lower cover ring 27 at its lower end. The drive shaft 5 passes through the upper cover ring 26 and the lower cover ring 27 in sequence. The first pump chamber 25 forms a relatively stable space through the upper cover ring 26 and the lower cover ring 27.

[0034] In another embodiment of the invention, such as Figure 4 As shown, a first rib 41 is provided on the top surface of the defoaming impeller 4 along its periphery, and a first annular groove 251 is provided on the top of the first pump chamber 25 along its circumference, with the first rib 41 extending into the first annular groove 251.

[0035] In another embodiment of the invention, such as Figure 3 As shown, the pump body 2 has a second pump chamber 28 at its lower end. A liquid conveying impeller 3 is located within the second pump chamber 28. Both the liquid outlet 24 and the liquid inlet 23 are connected to the second pump chamber 28. The liquid outlet 24 is located on the outer periphery of the liquid conveying impeller 3, and the liquid inlet 23 is located below the liquid conveying impeller 3. The top of the second pump chamber 28 narrows inward to form a second annular groove 281. The top surface of the liquid conveying impeller 3 corresponds to the lower end surface of the second annular groove 281. A second rib 31 is provided on the top surface along the periphery of the liquid conveying impeller 3, extending into the second annular groove 281.

[0036] In another embodiment of the invention, such as Figure 3 As shown, the pump body 2 and the second pump chamber 28 of the pump are provided with an inwardly protruding annular wall 282. The inner periphery of the annular wall 282 extends upward to form an inner tube 283, through which the drive shaft 5 passes. The inner tube 283 serves as an isolation device.

[0037] In another embodiment of the invention, such as Figure 4As shown, a stepped portion 51 is provided at the root of the drive shaft 5 along its circumference. A threaded sleeve 6 is provided below the stepped portion 51, and the threaded sleeve 6 is threaded onto the drive shaft 5. The defoaming impeller 4 is fitted onto the drive shaft 5, with its upper end limited to the stepped portion 51. The lower end face of the defoaming impeller 4 abuts against the upper end face of the threaded sleeve 6, and a first sealing ring 7 is provided between them. When assembling the defoaming impeller 4, first, the defoaming impeller 4 is fitted onto the drive shaft 5 until it abuts against the stepped portion 51, and then the threaded sleeve 6 is fitted onto it. A thread is provided on the drive shaft 5 below the stepped portion 51, and the threaded sleeve 6 is threaded onto the thread on the drive shaft 5, thereby fastening the defoaming impeller 4 to the drive shaft 5. This method has the advantages of convenient assembly and a robust structure.

[0038] In another embodiment of the invention, such as Figure 3 and Figure 4 As shown, a bushing 8 is fitted onto the drive shaft 5 of the pump. The bushing 8 protects the drive shaft 5 from corrosion. Both ends of the drive shaft 5 extend to the liquid conveying impeller 3 and the threaded sleeve 6, respectively. The threaded sleeve 6 is fitted onto the upper end of the bushing 8, and a second sealing ring 9 is provided between the two. The second sealing ring 9 provides a seal to prevent liquid from entering the bushing 8.

[0039] In another embodiment of the invention, such as Figure 3 As shown, a filter screen 231 is provided at the liquid inlet 23 of the pump. The periphery of the filter screen 231 is fixed on a screw-on cover ring 232, which is screwed onto the inner circumference of the bottom of the pump body 2.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pump with defoaming and liquid delivery functions, comprising: A driving device, wherein the driving device is connected to a driving shaft; characterized in that it further comprises: A pump body, wherein the drive device is fixedly connected to the pump body, and the drive shaft extends into the pump body and the two are coaxially arranged; the lower end of the pump body is provided with a liquid inlet and a liquid outlet, and the top of the pump body is provided with an air bubble inlet and an air bubble outlet; A liquid conveying impeller is fixedly connected to the lower end of the drive shaft, and both the liquid inlet and the liquid outlet are connected to the liquid conveying impeller; and A defoaming impeller is fixedly connected to the root of the drive shaft, and both the bubble inlet and the bubble outlet are connected to the defoaming impeller. The lower end of the pump body is provided with a second pump chamber, and the connection between the pump body and the second pump chamber is provided with an inwardly protruding annular wall. The inner periphery of the annular wall extends upward to form an inner tube, and the drive shaft passes through the inner tube. A stepped portion is provided at the root of the drive shaft along its circumference, and a threaded sleeve is provided below the stepped portion, the threaded sleeve being threaded onto the drive shaft; the defoaming impeller is sleeved on the drive shaft and its upper end is limited to the stepped portion, the lower end face of the defoaming impeller and the upper end face of the threaded sleeve abut against each other and a first sealing ring is provided between them. The top of the pump body is provided with a first pump chamber, and the defoaming impeller is housed in the first pump chamber; the bubble inlet and the bubble outlet are both connected to the first pump chamber, and the bubble outlet is located on the outer periphery of the defoaming impeller, and the defoaming impeller is positioned above the bubble inlet; The plurality of bubble inlets and / or the plurality of bubble outlets are evenly distributed along the circumference of the pump body; the bubble inlets and / or the bubble outlets are strip-shaped holes that extend along the circumference of the pump body; The liquid conveying impeller is disposed in the second pump chamber. The liquid outlet and the liquid inlet are both connected to the second pump chamber. The liquid outlet is located on the outer periphery of the liquid conveying impeller, and the liquid inlet is located below the liquid conveying impeller. The top of the second pump chamber narrows inward to form a second annular groove. The top surface of the liquid conveying impeller corresponds to the lower end surface of the second annular groove. A second rib is provided on the top surface along the periphery of the liquid conveying impeller, and the second rib extends into the second annular groove. A bushing is fitted on the drive shaft, and the two ends of the drive shaft extend to the liquid conveying impeller and the threaded sleeve, respectively. The threaded sleeve is fitted on the upper end of the bushing, and a second sealing ring is provided between the two.

2. The pump with defoaming and liquid conveying functions according to claim 1, characterized in that, The upper end of the first pump chamber is provided with an upper cover ring, and the lower end is provided with a lower cover ring. The drive shaft passes through the upper cover ring and the lower cover ring in sequence.

3. The pump with defoaming and liquid conveying functions according to claim 1, characterized in that, A first raised rib is provided on the top surface of the defoaming impeller along its periphery, and a first annular groove is provided on the top of the first pump cavity along its circumference, with one ring of the first raised rib extending into one ring of the first annular groove.

4. The pump with defoaming and liquid conveying functions according to any one of claims 1-3, characterized in that, A filter screen is provided at the liquid inlet, and the periphery of the filter screen is fixed on a screw-on cover ring, which is screwed onto the inner circumference of the bottom of the pump body.

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