CN112211825A - Inward-inclination spiral blade impurity pump - Google Patents

Inward-inclination spiral blade impurity pump Download PDF

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Publication number
CN112211825A
CN112211825A CN202010933997.1A CN202010933997A CN112211825A CN 112211825 A CN112211825 A CN 112211825A CN 202010933997 A CN202010933997 A CN 202010933997A CN 112211825 A CN112211825 A CN 112211825A
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CN
China
Prior art keywords
impeller
arc
pump
spiral
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010933997.1A
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Chinese (zh)
Inventor
张鑫珩
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Jiangsu Hanlian Environmental Protection Equipment Technology Co ltd
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Jiangsu Hanlian Environmental Protection Equipment Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Jiangsu Hanlian Environmental Protection Equipment Technology Co ltd filed Critical Jiangsu Hanlian Environmental Protection Equipment Technology Co ltd
Priority to CN202010933997.1A priority Critical patent/CN112211825A/en
Publication of CN112211825A publication Critical patent/CN112211825A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • F04D13/06Units comprising pumps and their driving means the pump being electrically driven
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • F04D13/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/181Axial flow rotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/52Casings; Connections of working fluid for axial pumps
    • F04D29/528Casings; Connections of working fluid for axial pumps especially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D3/00Axial-flow pumps
    • F04D3/02Axial-flow pumps of screw type

Abstract

The invention discloses an impurity pump with an internal inclination angle and spiral blades, which mainly comprises a motor, a pump shell, an arc-shaped spiral impeller, an impeller shaft and an impeller housing, wherein the arc-shaped spiral impeller is divided into a suction section, a conveying section and a discharge section according to the functions of the arc-shaped spiral impeller; the arc spiral impeller is fixed on the impeller shaft in a spiral shape, and the impeller shaft is connected with the output shaft of the motor and is directly driven by the motor to rotate. By adopting the arc-shaped spiral impeller, the conveying medium is not limited to pure liquid and a mixture with good fluidity and extremely low solid-liquid ratio, and is suitable for liquid and solid mixtures with poor fluidity and even extremely poor fluidity; the lift and the flow are obviously improved under the same conveying condition, the efficiency and the energy utilization rate are obviously improved, and the energy-saving and high-efficiency conveying device has the obvious advantages of energy conservation and high efficiency.

Description

Inward-inclination spiral blade impurity pump
Technical Field
The invention relates to liquid and solid cleaning and conveying technologies in various fields of sludge of sewage treatment plants, riverbed sludge treatment of riverbeds and the like, in particular to an internal inclination angle helical blade impurity pump.
Background
The pump technology is more and more widely applied to various industries, but most of the pump applications mainly aim at conveying fluid or pressurizing the fluid, such as the fields of chemical industry, petroleum department, agricultural irrigation and drainage, mining metallurgy and the like, the pump technology has obvious advantages, and when the pump works, vacuum is formed to generate suction force to suck a medium to realize a conveying function, and the pump technology is mainly used for conveying liquid medium with very strong fluidity. However, the application of the pump in the aspects of transporting non-simple liquid, such as river dredging, sludge dredging and other places, is a dredge pump, but at present, the dredge pump can only transport liquid, mud-water mixture with high solid proportion and good fluidity or medium with similar properties, when the mixture has high solid content, high viscosity, poor fluidity or even no fluidity, the dredge pump can be blocked and stop working, and the dredging needs to be manually cleaned. When the river bed sludge is exposed and hardened, the sludge pump can not work normally due to insufficient suction force, and only can artificially impact the accumulated sludge by water flow to loosen the accumulated sludge, improve the proportion of water and sludge, and improve the flow performance so as to meet the applicability of the sludge pump. The applicant finds that the working mode has the defects of low efficiency, high consumption, labor intensity of operators and poor working environment, and particularly has potential safety hazards in a semi-closed environment.
Disclosure of Invention
The invention provides a technical innovation for solving the difficult problems of the impurity pump with the helical blades with the inward inclination angles. According to the scheme, the impeller of the conventional dredge pump is changed into the arc-shaped spiral impeller, so that the pump has a pumping function and a tunneling function, and in addition, along with the rotation of the spiral impeller, a liquid-solid mixed medium which is high in solid content rate and poor in flowability or does not have flowability is continuously and passively pushed forwards, and meanwhile, the pressure is also improved.
In order to realize the purpose of conveying liquid and solid media, the invention adopts the following main technical measures:
a negative angle helical vane trash pump for transporting liquid and solid mixed media, the negative angle helical vane trash pump comprising:
an impeller shaft;
the driving part is used for driving the impeller shaft to drive the arc-shaped spiral impeller to rotate, and the impeller shaft can be integrated with the water baffle or can be separated.
The pump shell is provided with a medium outlet;
an impeller housing connected with the pump shell and arranged on the periphery of the arc-shaped spiral impeller,
the arc-shaped spiral impeller is fixedly arranged on the periphery of an impeller shaft in a spiral manner at a set spiral pitch, and is sequentially divided into three working sections, namely an intake section, a conveying section and a discharge section along the axial direction,
the suction section is positioned at one end of the arc-shaped spiral impeller, which is far away from the pump shell, and is used for the excavation and suction work of media;
the discharge section is positioned at the position where the arc-shaped spiral impeller is arranged in the pump shell and used for discharging the medium with the flow speed out of the pump;
the conveying section is positioned between the discharge section and the suction section of the arc-shaped spiral impeller, so that medium conveying and pressurization are realized.
Optionally, the working surface of the arc-shaped helical impeller is arc-shaped, and no matter how many sections of arc smooth transition or plane and arc smooth transition are adopted in the working surface of the arc-shaped helical impeller, on the longitudinal section of the axis passing through the arc-shaped helical impeller, the included angle β between the working surface of the impeller and the inner inclination of the impeller shaft and the range of the angle δ of the outer edge of the working surface of the impeller are respectively: beta is more than or equal to 30 degrees and less than or equal to 85 degrees; delta is more than or equal to 90 degrees and less than or equal to 180 degrees.
Optionally, the arc-shaped helical impeller is continuously integrated in three working sections or is disconnected and separated.
Optionally, the number of the arc-shaped helical impellers is a single head or multiple heads, and the number of the heads of the arc-shaped helical impellers of different working sections is the same or different.
Optionally, the spiral pitches of the three working sections of the arc-shaped spiral impeller are equal or unequal.
Optionally, the axial length of the impeller shaft is less than or equal to that of the arc-shaped helical impeller, and the axial length of the impeller shaft is zero at minimum.
Optionally, the axial length of the impeller housing is greater than or equal to the axial length of the arc-shaped helical impeller.
Optionally, the axial length of the impeller housing is less than or equal to the axial length of the arc-shaped helical impeller.
Optionally, the outer profile of the arc-shaped helical impeller from the suction section to the output section is in a cylindrical shape with the same radial size; or a taper of increasing radial dimension; or the outer contour from the suction section to the conveying section is in a gradually enlarged cone shape; or only the suction section is tapered with a gradual enlargement.
Optionally, one surface of the water baffle, which is opposite to the arc-shaped helical impeller, is further provided with an auxiliary blade.
The impurity pump with the internal inclination angle and the helical blades has the following beneficial effects:
(1) the pump has the functions of pumping, conveying and pressurizing, the innovative application of the arc-shaped spiral impeller enables the impurity pump with the spiral blades at the inner inclination angle to have the excavating function which is not possessed by a mud pump, and the pump not only can convey simple liquid, but also can convey liquid and solid mixture, and can be applied to places such as rivers, lakes, channels, sewage treatment plants and the like. Especially, the sludge with poor fluidity or no fluidity can be effectively cleaned without stopping and idling due to blockage, motor overheating and the like when the liquid-solid mixture with poor fluidity is conveyed. Especially, the equipment of the scheme can bring great convenience into play when deeper workplaces are cleaned by deposited sludge such as black, stink, marsh and the like which are harmful to human bodies;
(2) can convey media containing particle impurities, especially when conveying living organisms such as fish, shrimp and the like smaller than a flow passage, can maintain the integrity and activity of the organisms;
(3) the lengthened arc-shaped spiral impeller or submersible pump body impeller can fully exert the tunneling function, the suction section directly and rotatably excavates deposited sludge, and the deposited sludge is continuously conveyed to the discharge section from the conveying section. When carrying out silt clearance in semi-enclosed building or swamp environment, more have obvious advantage performance, whole journey does not need operating personnel to go down deep department and observes, has avoided personal injury influences such as oxygen deficiency, stifling, deep-seated that the adverse circumstances of environmental condition probably brought, and operating personnel security obtains guaranteeing, and work efficiency improves greatly, and is high to environmental condition adaptability, is applicable to the overwhelming majority of occasions and has ensured operating personnel personal safety, has improved work efficiency simultaneously.
Drawings
The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic illustration of a dry-type, internally pitched screw blade impurity pump of example 1;
FIG. 2 is a schematic view of a submersible, internally pitched screw blade trash pump of example 2.
FIG. 3 is a schematic longitudinal sectional structural shape of an arc-shaped helical impeller of embodiment 3;
FIG. 4 is a schematic diagram showing the operation of the pump for impurities having a declined angle in accordance with embodiment 4.
Detailed Description
Embodiments of the present invention of a pitched screw blade impurities pump will now be described with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.
Fig. 1 is a schematic diagram showing an embodiment of a camber angle helical blade trash pump for conveying a liquid-solid mixed medium according to the present invention, which includes key parts such as a driving part, a pump housing 1, an arc-shaped helical impeller 2, an impeller shaft 3, and an impeller housing 4. The driving part can be a motor 5, and the motor 5 is coaxially connected with the impeller shaft 3 and used for driving the impeller shaft 3 to rotate. However, the impeller shaft may be driven by other transmission mechanisms, which will not be described in detail herein. In addition, this embodiment does not exclude that instead of an electric motor, other power machines, such as an internal combustion engine, may be used to drive the impeller shaft 3.
The pump housing 1 is a housing having a cavity, on which a medium discharge port is provided. As shown in fig. 1, one side of the medium discharge port may have a hole for the output end of the motor to penetrate through, and the other side of the medium discharge port may have a hole for the arc-shaped helical impeller to penetrate through, and the medium discharge port may be radially disposed, or the medium discharge port may be disposed to extend along a tangent line of the inner cavity of the pump casing 1, or may be disposed at an angle in other directions, which is not limited in the present invention.
The impeller housing 4 and the pump shell 1 are connected and arranged on the periphery of the arc-shaped spiral impeller, and the gap between the impeller housing 4 and the periphery of the arc-shaped spiral impeller is not more than 2.5 mm. The impeller housing 4 and the pump housing 1 may be detachably connected, for example, by flanges. The arc-shaped spiral impeller 2 is fixedly arranged on the periphery of the impeller shaft 3 in a spiral mode at a set spiral pitch, and the arc-shaped spiral impeller 2 can be single-end or multi-end. The arc-shaped spiral impeller 2 and the impeller shaft 3 can be fixedly formed into a whole or welded into a whole, and the arc-shaped spiral impeller 2 is sequentially divided into three working sections, namely a suction section 23, a conveying section 22 and a discharge section 21, along the axial direction.
The suction section 23 is positioned at one end of the arc-shaped spiral impeller 2 far away from the pump shell 1 and is used for excavating and sucking liquid and solid media; the discharge section 21 is positioned at the position where the arc-shaped spiral impeller 2 is arranged in the pump shell 1 and is used for discharging a medium with a flow velocity out of the pump; the conveying section is positioned between the discharge section and the suction section of the arc-shaped spiral impeller 2, so that medium conveying and pressurization are realized.
The outer contour of the arc spiral impeller from the suction section to the output section can be set into a cylinder with the same radial size; or a taper of increasing radial dimension; or the outer contours of the suction section and the conveying section are in a continuously and gradually increasing conical shape; or only the suction section may be tapered. The arcuate helical impeller of the suction section 23 is tapered as shown in figure 1 to facilitate insertion into the soil and like solids. As shown in fig. 2, the outer profile from the suction section to the delivery section is tapered with increasing radial dimension.
Further, as shown in fig. 3, which is a longitudinal cross-sectional view of the arc-shaped helical blade 2 of the present invention, in order to ensure the high efficiency and the fluency of the medium conveying process, the main working surface 25 of the arc-shaped helical blade wheel is designed as an arc-shaped smooth surface, the concave surface thereof is the main working surface 25, and the main working surface of the arc-shaped helical blade wheel can adopt several sections of arc smooth transition or adopt plane and arc smooth transition. It can also be said that the arc line of the main working surface, which is taken by the longitudinal section (the section passing through the axis of the arc-shaped helical impeller), can be formed by smooth transition of multiple arc lines, and also can be formed by transition of 'straight line segment + arc line'. In order to ensure the effective flow of the impurity pump with the helical blades at the inner inclination angle, the value ranges of an inner inclination included angle beta between the impeller and the impeller shaft and a corner delta of the outer edge of the impeller in the longitudinal section are respectively as follows: beta is more than or equal to 30 degrees and less than or equal to 85 degrees; delta is more than or equal to 90 degrees and less than or equal to 180 degrees.
Furthermore, the shape and structure of the three working sections of the arc-shaped spiral impeller, the arc shape of the working surface, the inward inclination included angle beta between the impeller and the impeller shaft and the outer edge corner delta of the impeller can be respectively adjusted and set to different values according to different functional effects. For example, when the flow rate is to be increased for the same head or when the head is to be increased for the same head, the angles β and δ are small.
Furthermore, the side of the water baffle, which is opposite to the arc-shaped spiral impeller, is also provided with an auxiliary blade, and the auxiliary blade can prevent water from flowing to one side of the motor when the pressure is higher.
As shown in fig. 4, which is a schematic view of an inclined installation operation mode of the impurity pump with the internally inclined helical blades of the invention, a hinge shaft is arranged on the installation seat 6, and the pump shell 1 of the impurity pump with the internally inclined helical blades is rotatably installed on the installation seat 6 through the hinge shaft, so that the inclined operation angle of the impurity pump with the internally inclined helical blades can be adjusted, and the suction section of the impurity pump with the internally inclined helical blades is rotated to be inclined downwards to perform operation during operation. Be equipped with truckle 61 on mount pad 6, when being applicable to the transport medium, conveniently remove the mount pad and make the interior inclination helical blade impurity pump suction segment move to needs transport medium.
The invention is further described below in connection with embodiments of the pump for included angle helical vane impurities applicable to different operating conditions:
example 1:
as shown in fig. 1, the present embodiment is a dry-type pitch helical blade impurity pump, and the electric motor 5 is dry, i.e., non-submersible; the motor 5 is directly connected with an impeller shaft 3 through a pump shell 1, and an arc-shaped spiral impeller 2 is fixedly arranged on the impeller shaft 3. In the embodiment, the arc-shaped helical impellers 2 have different shapes, structures and outlines in the three working sections, the discharge section 21 and the conveying section 22 can be split, fig. 1 shows that the outer diameter of the impeller of the discharge section 21 is larger than that of the conveying section and that of the suction section, the arc-shaped helical impellers 2 of the discharge section 21 can be processed separately, and the arc-shaped helical impellers 2 of the conveying section and that of the suction section can be processed integrally. The discharge section 21 is arranged in the pump shell 1 and rotates synchronously with the impeller shaft 3, and the number of the impellers of the discharge section 21 can be single-head or multi-head.
The spiral line number of the impeller can be any value, and is different according to the requirements of the environment conditions of the application field, and when the deposited sludge is deep, the spiral line number n of the spiral impeller is large so as to meet the requirement of the axial length; the number of the arc-shaped spiral impellers of the suction section 23 can be the same as that of the impellers of the conveying section 22, and the suction section 23 and the conveying section are in an integrated fixed connection structure. The suction section 23 arc-shaped helical impeller and the conveying section 22 can also be of a split structure, namely the number of the two sections of arc-shaped helical impellers is different, and in the schematic diagram, the suction section 23 arc-shaped helical impeller and the conveying section 22 arc-shaped helical impeller are both one piece and are of an integrated continuous structure. The impeller housing 4 is fixedly connected with the pump housing 1 through a fastening piece, the suction section 23 of the arc-shaped spiral impeller 2 is exposed out of the impeller housing 4, and the structure is favorable for the arc-shaped spiral impeller of the suction section 23 to excavate media with poor fluidity or hardened sludge and the like.
When the pump works, the motor 5 is started to rotate, the impeller shaft 3 is driven to rotate at the same time, the arc-shaped spiral impeller 2 fixedly arranged on the impeller shaft 3 synchronously rotates, the suction section 23 is exposed outside the impeller housing 4, so that media with poor flowability or hardened sludge and the like are excavated and then smoothly pushed to the conveying section of the arc-shaped spiral impeller 2, the media are sequentially pressurized and conveyed into the pump shell 1 under the continuous rotating operation and guiding action of the arc-shaped spiral impeller 2 of the conveying section, the discharging section 21 synchronously rotating with the impeller shaft 3 in the pump shell 1 generates a centrifugal action, the media are output from the media output port 12 arranged on the pump shell 1, and the liquid and solid conveying work is finished.
Example 2
The technical features of embodiment 2 are substantially the same as those of embodiment 1, and the description of the same structure thereof will be omitted herein, and only the different structure thereof will be described.
In the embodiment, the suction section 23 is not exposed at the outer end of the impeller housing 4, but is in a state of being parallel to or embedded in the impeller housing 4, the impurity pump with the helical blades with the inward inclination of the embodiment is particularly suitable for cleaning the deposited sludge in the riverway riverbed without blocking the riverway in advance and emptying the river, only the impeller housing 4 of the impurity pump with the helical blades with the inward inclination of the embodiment is inserted into the deposited sludge, the impeller housing 4 isolates the river outside the impeller housing 4, the impeller housing 4 is firstly inserted into a medium during the operation to form a relatively closed working environment, the sludge is directly contacted with the suction section 23, the arc-shaped helical impeller 2 only conveys the sludge which is dug by rotation and the water which is slightly leaked and enters during the operation, the dredging efficiency is improved, and meanwhile, the solid content of the sludge is high, the cost in the aspects of the subsequent dehydration sludge process is reduced, the cost is reduced and the energy is saved.
Example 3:
as shown in fig. 2, the internally inclined helical blade impurity pump of the embodiment 3 is a submersible type, that is, the internally inclined helical blade impurity pump can be submerged in the water body to work. The technical features of embodiment 3 are substantially the same as those of embodiment 1, and the description of the same structure thereof will be omitted herein, and only the different structure thereof will be described.
The motor 5 is a submersible motor and is provided with a sealing device at the same time, so that the motor damage caused by water leakage is avoided; the arc-shaped helical impeller 2 shown in fig. 2 is of a single-piece integral structure, namely, the discharge section 21, the conveying section 22 and the suction section 23 are fixedly connected into a whole, and the arc-shaped helical impeller 2 is of a single head; the impeller shaft 3 is set as a short shaft, specifically, the length of the impeller shaft 3 is smaller than the axial length of the arc-shaped spiral impeller 2, or the arc-shaped spiral impeller 2 is only coaxially connected with the water baffle 11 at one end close to the pump shell, and other positions are all suspended, that is, the axial length of the impeller shaft 3 is zero. When the axial length of the impeller shaft 3 is zero, the driving part directly drives the impeller and the water baffle at the end part of the impeller to rotate. The overall outline of the arc-shaped spiral impeller 2 is arranged to be conical; the impeller housing 4 is detachably connected to the pump casing 1, and the suction section 23 of the arc-shaped spiral impeller 2 is exposed out of the impeller pump casing 4. The product has compact structure, small size and light weight, and is convenient to lift and hoist; and because of being submersible, adaptability is stronger.
The illustrations shown in fig. 1 and 2 are for convenience of describing the specific illustration of the present patent application, but are not exclusive, and in practice, any combination of submersible, arc-shaped helical impellers long or short, integral or split arc-shaped helical impellers, number of helical lines, number of helical impellers, exposed or built-in impellers, and the like may be used. All structural types of the product can be provided with the fixed support frame to realize any installation modes such as horizontal work, vertical work or inclined work and the like, and dry or diving conditions are determined according to specific environmental condition requirements.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides an inclination helical blade trash pump for carrying liquid, solid mixed medium which characterized in that: the negative pitch helical blade trash pump includes:
an impeller shaft;
the driving part is used for driving the impeller shaft to drive the arc-shaped spiral impeller to rotate;
the pump shell is provided with a medium outlet;
an impeller housing connected with the pump shell and arranged on the periphery of the arc-shaped spiral impeller,
the arc-shaped spiral impeller is fixedly arranged on the periphery of an impeller shaft in a spiral manner at a set spiral pitch, and is sequentially divided into three working sections, namely an intake section, a conveying section and a discharge section along the axial direction,
the suction section is positioned at one end of the arc-shaped spiral impeller, which is far away from the pump shell, and is used for the excavation and suction work of media;
the discharge section is positioned at the position where the arc-shaped spiral impeller is arranged in the pump shell and used for discharging the medium with the flow speed out of the pump;
the conveying section is positioned between the discharge section and the suction section of the arc-shaped spiral impeller, so that medium conveying and pressurization are realized.
2. The pitch angle helical vane trash pump of claim 1, wherein: the arc is personally submitted in arc spiral impeller work, and no matter the working face of arc spiral impeller adopts several sections circular arc smooth transition or adopts plane and circular arc smooth transition, on the longitudinal section of crossing the axis of arc spiral impeller, the working face of impeller and the interior inclination contained angle beta of impeller shaft to and the value range of the corner delta of the working face outer fringe of impeller do not: beta is more than or equal to 30 degrees and less than or equal to 85 degrees; delta is more than or equal to 90 degrees and less than or equal to 180 degrees.
3. The pitch angle helical vane trash pump of claim 1, wherein: the arc-shaped helical impeller is continuous and integrated in three working sections or is disconnected and separated.
4. The pitch angle helical vane trash pump of claim 1, wherein:
the number of the arc-shaped spiral impellers is single-head or multi-head, and the number of the heads of the arc-shaped spiral impellers in different working sections is the same or different.
5. The pitch angle helical vane trash pump of claim 1, wherein: the spiral pitches of the three working sections of the arc-shaped spiral impeller are equal or unequal.
6. The pitch angle helical vane trash pump of claim 1, wherein: the axial length of the impeller shaft is less than or equal to that of the arc spiral impeller, and the axial length of the impeller shaft is zero at least.
7. The pitch angle helical vane trash pump of claim 1, wherein: the axial length of the impeller housing is more than or equal to that of the arc spiral impeller.
8. The pitch angle helical vane trash pump of claim 1, wherein: the axial length of the impeller housing is less than or equal to that of the arc spiral impeller.
9. The pitch angle helical vane trash pump of claim 1, wherein: the outer contour of the arc spiral impeller from the suction section to the output section is in a cylindrical shape with the same radial size; or a taper of increasing radial dimension; or the outer contour from the suction section to the conveying section is in a gradually enlarged cone shape; or only the suction section is tapered with a gradual enlargement.
10. The pitch angle helical vane trash pump of claim 1, wherein: and one surface of the water baffle, which is back to the arc-shaped spiral impeller, is also provided with auxiliary blades.
CN202010933997.1A 2020-09-08 2020-09-08 Inward-inclination spiral blade impurity pump Pending CN112211825A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN105464998A (en) * 2015-12-24 2016-04-06 苏州经贸职业技术学院 Spiral elevating combined type agricultural water pump
CN106895024A (en) * 2017-05-04 2017-06-27 李世煌 Spiral flow constant-pressure pump
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Publication number Priority date Publication date Assignee Title
CN102734982A (en) * 2011-03-30 2012-10-17 哈尔滨工大金涛科技股份有限公司 Direct sewage source heat pump
CN103492722A (en) * 2011-04-19 2014-01-01 哈利伯顿能源服务公司 Submersible centrifugal pump for solids-laden fluid
CN104712578A (en) * 2015-02-12 2015-06-17 溧阳市超强链条制造有限公司 Spiral centrifugal pump impeller improving self-balancing capacity
CN105422478A (en) * 2015-12-24 2016-03-23 苏州经贸职业技术学院 Combined type multifunctional agricultural water pump
CN105464998A (en) * 2015-12-24 2016-04-06 苏州经贸职业技术学院 Spiral elevating combined type agricultural water pump
CN106895024A (en) * 2017-05-04 2017-06-27 李世煌 Spiral flow constant-pressure pump
CN210003524U (en) * 2019-06-20 2020-01-31 青岛瑞顺泰合泵业有限公司 centrifugal screw pump capable of realizing non-blocking conveying
CN110217841A (en) * 2019-07-17 2019-09-10 郑水芝 A kind of deodorization cesspool of high-efficient dirt exhausting

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