Multiple fluid mixing pump
By designing independent suction structure and vortex mixing pressurization structure in the pump, the problem that existing pumps cannot effectively mix gas-containing liquids is solved, and efficient pressurization mixing of gas and liquids is achieved, which is suitable for a variety of industries and Water treatment application improves pump efficiency and mixing effect.
Patent Information
- Application Number
- CN201710006272.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2017-01-05
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2037-01-05
AI Technical Summary
Existing centrifugal pumps cannot effectively transport gas-containing liquids, which are prone to cavitation, vibration, noise and flow interruption problems, and are difficult to achieve the pressurized mixing function of liquid and liquid, and cannot meet the water treatment and industrial gas and liquid synthesis reaction systems. need.
A multi-item fluid mixing conveying pump is designed, adopting an independent suction structure, a unique vortex mixing pressurization and stirring structure, which generates negative pressure through the centrifugal impeller and the back blade, and combines the vortex blade and the separator to achieve gas and liquid addition. Pressure mixing and pressurized mixing of liquid and liquid, breaking up large bubbles, forming tiny bubbles of 20-30 microns, achieving full mixing.
It realizes efficient gas and liquid and liquid mixing, improves pump efficiency, saves energy, and is suitable for water treatment, ozone water production and industrial gas and liquid synthesis reaction systems, significantly improving the liquid flow rate and micro bubble content.
Smart Images
Figure CN107061374B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of delivery pumps, in particular to a multi-fluid mixing delivery pump. Background Art
[0002] Ordinary centrifugal pumps cannot transport gas-containing liquids. Pumping gas-containing liquids will cause cavitation, vibration, noise, and even interruption of flow and inability to absorb liquid. Long-term operation in a cavitation state will damage the equipment. In addition, it is difficult for ordinary centrifugal pumps to mix liquids. However, in the pressurized dissolved air flotation system of the water treatment industry, the high-concentration ozone water or oxygen-rich water production system, the industrial gas or chemical gas and liquid synthesis reaction system, the liquid and liquid pressurized mixing system of different properties, etc., it is necessary to achieve the gas and liquid pressurized mixing and liquid and liquid pressurized mixing functions in the pump. Current products cannot effectively meet the above requirements. Summary of the invention
[0003] In view of the deficiencies in the prior art, the present invention provides a multi-fluid mixing delivery pump, which can realize the pressurized mixing of gas and liquid and the pressurized mixing of liquid and liquid in the pump.
[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multi-fluid mixing delivery pump, which includes: a pump body, a pump cover installed on the pump body, and a bearing box installed on the pump body. A centrifugal impeller is installed in the pump body, and a plurality of back blades that can generate negative pressure are arranged on the back of the centrifugal impeller. A working cavity that serves as a medium suction space when the back blade rotates with the centrifugal impeller is provided between the back blade and the pump cover. The working cavity is installed with an air suction / liquid suction port pipeline and a circulating liquid supply port pipeline. A plurality of vortex blades for boosting and mixing are arranged at the end of the back of the centrifugal impeller and the outer diameter of the impeller, and the pump cover is provided with one or more baffles.
[0005] Compared with the prior art, the multi-fluid mixing and delivery pump provided by the present invention adopts an independent suction structure, a unique vortex mixing pressurization, stirring structure and a large bubble breaking structure to achieve bubble miniaturization, form tiny bubbles of 20-30 microns, and fully mix them with the liquid delivered by the centrifugal impeller, thereby achieving the characteristics of large liquid treatment flow, high microbubble content, high pump efficiency, energy saving, etc., to achieve the most ideal water treatment effect.
[0006] Furthermore, there is a gap one between the back blade and the end face of the pump cover for the medium to pass through when the back blade rotates with the centrifugal impeller. Furthermore, the value range of gap one is 0.5mm-1mm, preferably 0.5mm. The size of gap one is just right to ensure that the medium can pass through gap one while ensuring that the working chamber forms a negative pressure when the pump body is working and inhales the medium to be mixed. The medium to be mixed can be either gas or liquid.
[0007] Furthermore, there is a gap 2 between the back of the vortex blade and the end surface of the pump cover for the medium to pass through when the back blade rotates with the centrifugal impeller. Furthermore, the value range of the gap 2 is 0.5mm to 1mm, and there is a gap 3 between the tongue and the top of the vortex blade for the medium to pass through when the back blade rotates with the centrifugal impeller. Furthermore, the value range of the gap 3 is 0.5mm to 1mm. The gaps 2 and 3 can ensure that the medium passes through and can also ensure that the working chamber forms a negative pressure when the pump body is working.
[0008] Furthermore, there is a gap structure between the top of the back blade and the bottom of the vortex blade, and the gap structure allows the medium from the gap one to be filled therein and then enter the gap two.
[0009] Furthermore, the centrifugal impeller is a closed impeller, a semi-open impeller or an open impeller.
[0010] Furthermore, the air suction / liquid suction port pipeline is arranged obliquely on the upper part of the bearing box, and passes through the bearing box and the pump cover in sequence;
[0011] The circulating fluid supply port pipeline is arranged obliquely at the lower part of the bearing box and passes through the bearing box and the pump cover in sequence.
[0012] Furthermore, the air suction / liquid suction port pipeline and the circulating liquid supply port pipeline are installed on the inclined side wall of the conical working cavity.
[0013] The working method of the above-mentioned multi-fluid mixing delivery pump comprises:
[0014] The centrifugal impeller drives the back blades to generate a vacuum in the working chamber on the back of the centrifugal impeller;
[0015] The medium to be mixed is sucked in by utilizing the vacuum state generated on the back of the centrifugal impeller;
[0016] The inhaled medium to be mixed is preliminarily mixed with the liquid at the back blade of the pump, and the preliminarily mixed medium is output to the working chamber through gap 1;
[0017] The vortex blades at the outer diameter of the centrifugal impeller are used to generate vortexes, and the mixed medium from the gap one is output through the gap structure and the gap two;
[0018] The large bubbles in the mixed medium from the gap two are broken by the diaphragm, and the mixed medium passes through the gap three and is discharged from the pump outlet along with the liquid in the pump.
[0019] The working principle of the present invention is that when the impeller rotates, a vacuum is generated on the back side of the impeller through the action of the back auxiliary blades (back blades), and the medium liquid (gas) is sucked into the working chamber through the back blades. The liquid sucked into the pump inlet is mixed with the liquid sucked into the back blades in the pump, and a vortex is generated by the small blades (vortex blades) at the outer diameter of the impeller, and is gradually pressurized through each small blade. The two liquids are fully mixed by the vortex action, and the mixed liquid is made more uniform by the shearing action of the baffle tongue. The two liquids are broken into very small liquid micro-clusters through vortex mixing, baffle tongue shear mixing and pressurized mixing of the pump, thereby achieving the most ideal mixing and conveying effect, and realizing the mixing and conveying of multiple fluids. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of a multi-fluid mixing delivery pump in the first embodiment of the present invention;
[0021] Figure 2 It is a schematic diagram of a multi-fluid mixing delivery pump in the second embodiment of the present invention;
[0022] Figure 3 Schematic diagram of a multi-fluid mixing delivery pump in the third embodiment of the present invention. DETAILED DESCRIPTION
[0023] Example 1: See Figure 1 , a multi-fluid mixed delivery pump, comprising: a pump body 1, a pump cover 3 installed on the pump body, a bearing box 4 installed on the pump body, a centrifugal impeller drive shaft installed in the bearing box, the centrifugal impeller drive shaft passes through the pump cover and is connected to the centrifugal impeller 2 installed on the pump body, the centrifugal impeller in this embodiment is a closed impeller, and a plurality of back blades 9 capable of generating negative pressure are arranged on the back of the centrifugal impeller, such as 2, 3 or more, and a corresponding number of back blades can be arranged on the back of the centrifugal impeller according to needs, and the arrangement of the back blades includes but is not limited to the arrangement of an annular array, and there is a back blade between the back blade and the pump cover 3 The working chamber, which serves as the medium suction space when the centrifugal impeller rotates, uses the back blades of the centrifugal impeller to draw air. The working chamber is equipped with an air suction / liquid suction port pipeline 5 and a circulating liquid supply port pipeline 6. Several vortex blades 8 for pressurization and mixing are arranged at the end of the back of the centrifugal impeller and at the outer diameter of the impeller. The small blades (vortex blades) at the outer diameter of the impeller are used to form a vortex. The number of vortex impellers can be, for example, 2, 3 or more. The pump cover is provided with one or more baffles 7, which are used to break large bubbles. When more than two baffles 7 are provided, the breaking effect of large bubbles is more conducive. The selection of the centrifugal impeller is intended to increase the liquid processing capacity by using the centrifugal impeller, which meets the needs of industrial large-scale transportation.
[0024] It is not difficult to find from the above content that when the multi-fluid mixing and delivery pump of the present invention mixes two different liquids, the main medium is sucked in through the pump inlet, and the other medium is sucked in through the independent liquid suction structure. The two liquids are fully mixed through vortex mixing and stirring, and the shearing action of the partition tongue is utilized to break the two liquids into very small liquid micro-clusters. After being pressurized by the pump, the two liquids are mixed more evenly, thereby achieving the most ideal mixing and delivery effect.
[0025] It is worth mentioning that there is a gap 1 between the back blade 9 and the end face of the pump cover 3 for the medium to pass through when the back blade rotates with the centrifugal impeller. The value range of gap 1 is 0.5mm-1mm, preferably 0.5mm. There is a gap 2 between the back of the vortex blade and the end face of the pump cover 3 for the medium to pass through when the back blade rotates with the centrifugal impeller. The value range of gap 2 is 0.5mm~1mm, preferably 0.5mm. There is a gap 3 between the tongue and the top of the vortex blade for the medium to pass through when the back blade rotates with the centrifugal impeller. The value range of gap 3 is 0.5mm~1mm, preferably 0.5mm. Gap 1, gap 2, and gap 3 can not only ensure the passage of the medium, but also ensure that the working cavity forms a negative pressure when the pump body is working, and the smaller gap is conducive to the miniaturized transportation of bubbles.
[0026] See also Figure 1 There is a gap structure between the top of the back blade and the bottom of the vortex blade. This gap structure allows the medium from gap one to fill here and then enter gap two. The medium gathered in the gap structure can quickly enter gap two with the help of its own gravity under the action of centrifugal force.
[0027] In addition, the air intake / liquid suction port pipeline 5 is arranged obliquely at the upper part of the bearing box, and passes through the bearing box and the pump cover in sequence, and the circulating liquid supply port pipeline 6 is arranged obliquely at the lower part of the bearing box, and passes through the bearing box and the pump cover in sequence. The air intake / liquid suction port pipeline 5 and the circulating liquid supply port pipeline 6 are installed on the inclined side wall of the conical working chamber. The inclined airway forms a certain angle with the medium output gap channel of the working chamber, which allows the medium to enter the working chamber smoothly while allowing the medium entering the working chamber to have enough time to be initially mixed with the liquid at the back blade of the pump. In order to reduce the impact force of the high-pressure medium to be mixed, the air intake / liquid suction port pipeline can be set to a serpentine structure, such as an S shape.
[0028] The working method of the multi-fluid mixing delivery pump is described in detail below, specifically as follows: after the pump is turned on, the centrifugal impeller is used to drive the back blades to generate a vacuum in the working chamber on the back of the centrifugal impeller, and the vacuum state generated on the back of the centrifugal impeller is used to suck in the medium to be mixed, and then the sucked medium to be mixed is preliminarily mixed with the liquid at the back blades in the pump, and the preliminarily mixed medium is output from the working chamber through gap one, and then the vortex blades at the outer diameter of the centrifugal impeller are used to generate a vortex, and the mixed medium from gap one is output through the gap structure and gap two, and then the large bubbles in the mixed medium from gap two are broken up by the partition tongue, and the mixed medium is output from the pump outlet after passing through gap three along with the liquid in the pump.
[0029] Example 2, see Figure 2 The difference between this embodiment and embodiment 1 is that the centrifugal impeller in this embodiment is a semi-open impeller, and the other structures are the same as those in embodiment 1, which will not be described in detail here.
[0030] Example 3, see Figure 3 The difference between this embodiment and embodiment 1 is that the centrifugal impeller in this embodiment is an open impeller, and the other structures are the same as those in embodiment 1, which will not be described in detail here.
[0031] In summary, the multiple fluid mixing and delivery pumps provided by the present invention have the functions of realizing pressurized mixing of gas and liquid and pressurized mixing of liquid and liquid in the pump. It is mainly used in pressurized dissolved air flotation systems, high-concentration ozone water or oxygen-enriched water preparation systems in the water treatment industry; industrial gas or chemical gas and liquid synthesis reaction systems; pressurized mixing systems of liquids and liquids of different properties, etc. The pressurized dissolved air flotation system is mainly used for solid-liquid separation of various domestic sewage and improvement of BOD and COD; the ozone water preparation system is used for disinfection and sterilization of various water bodies; the oxygen-enriched water preparation system is used to force increase of oxygen content in the water body to produce functional water; the industrial gas or gas and liquid synthesis reaction system is mainly used to simplify the process flow of gas and liquid mixing, improve mixing efficiency or achieve efficient replacement; the pressurized mixing system of liquid and liquid is also used for special purposes such as mixing or synthesis reaction between liquids of different properties or components.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.
Claims
1. A multi-fluid mixing delivery pump, comprising: A pump body, a pump cover installed on the pump body, and a bearing box installed on the pump body, wherein a centrifugal impeller is installed in the pump body, characterized in that a plurality of back blades capable of generating negative pressure are arranged on the back of the centrifugal impeller, a working cavity serving as a medium suction space when the back blade rotates with the centrifugal impeller is provided between the back blade and the pump cover, the working cavity is provided with an air suction / liquid suction port pipeline and a circulating liquid supply port pipeline, a plurality of vortex blades for pressurization and mixing are arranged at the end of the back of the centrifugal impeller and at the outer diameter of the impeller, and the pump cover is provided with one or more baffles; There is a gap between the back blade and the end surface of the pump cover for the medium to pass through when the back blade rotates with the centrifugal impeller; There is a gap 2 between the back of the vortex blade and the end surface of the pump cover for medium to pass through when the back blade rotates with the centrifugal impeller, and there is a gap 3 between the partition tongue and the upper top of the vortex blade for medium to pass through when the back blade rotates with the centrifugal impeller; There is a gap structure between the top of the back blade and the bottom of the vortex blade; The value range of the gap 1 is 0.5mm-1mm; The value range of the gap 2 is 0.5 mm to 1 mm, and the value range of the gap 3 is 0.5 mm to 1 mm.
2. The multi-fluid mixing delivery pump according to claim 1, characterized in that: The centrifugal impeller is a closed impeller, a semi-open impeller or an open impeller.
3. The multi-fluid mixing delivery pump according to claim 1, characterized in that: The air suction / liquid suction port pipeline is arranged obliquely on the upper part of the bearing box, and passes through the bearing box and the pump cover in sequence; The circulating liquid supply port pipeline is arranged obliquely at the lower part of the bearing box and passes through the bearing box and the pump cover in sequence.
4. The multi-fluid mixing delivery pump according to claim 3, characterized in that: The air suction / liquid suction port pipeline and the circulating liquid supply port pipeline are installed on the inclined side wall of the conical working cavity.
5. A method for operating a multi-fluid mixed delivery pump as claimed in any one of claims 1 to 4, characterized in that: It includes: The centrifugal impeller drives the back blades to generate a vacuum in the working chamber on the back of the centrifugal impeller; The medium to be mixed is sucked in by utilizing the vacuum state generated on the back of the centrifugal impeller; The inhaled medium to be mixed is preliminarily mixed with the liquid at the back blade of the pump, and the preliminarily mixed medium is output to the working chamber through gap 1; The vortex blades at the outer diameter of the centrifugal impeller are used to generate vortexes, and the mixed medium from the gap one is output through the gap structure and the gap two; The large bubbles in the mixed medium from the gap two are broken by the diaphragm, and the mixed medium passes through the gap three and is discharged from the pump outlet along with the liquid in the pump.