Corrosion-resistant integrated mixed-flow pump unit

Abstract

The invention discloses a corrosion-resistant integrated mixed-flow pump unit, the corrosion-resistant integrated mixed-flow pump unit comprises a corrosion-resistant mixed-flow pump main body, the corrosion-resistant mixed-flow pump main body comprises an input end and an output end, the output end is provided with a connecting pipe, an auxiliary pipe is arranged between the connecting pipe and the output end through a connecting flange, and the auxiliary pipe is connected with the input end of the corrosion-resistant mixed-flow pump main body. A filtering and discharging mechanism is arranged in the auxiliary pipe, an impurity temporary storage pipe matched with the filtering and discharging mechanism is arranged below the auxiliary pipe, and a collecting mechanism is arranged on one side of the impurity temporary storage pipe. By integrating the functions of filtering, cleaning, separating and recycling, the technical problems that a traditional corrosion-resistant mixed-flow pump is prone to blockage, difficult to maintain, short in service life and the like when treating liquid containing impurities are solved, corrosion resistance and operation efficiency are both considered, reliability is ensured, and the maintenance cost is low.

Description

Technical Field

[0001] The present invention belongs to the technical field of mixed-flow pumps, and specifically relates to a corrosion-resistant integrated mixed-flow pump unit. Background Art

[0002] The corrosion-resistant integrated mixed-flow pump unit is a fluid transportation device specifically designed for transporting corrosive media. Its core function is to generate a combined thrust in the axial and radial directions through the rotation of the mixed-flow pump impeller, thereby achieving the transportation of liquids with large flow rates and low lift. This unit adopts an integrated design concept, integrating the pump body, drive motor, corrosion-resistant structure, and auxiliary devices into one, and is particularly suitable for scenarios such as chemical industry, water treatment, and environmental protection that require the treatment of corrosive liquids (such as acids, alkalis, and chlorine-containing media).

[0003] However, in the application of existing corrosion-resistant integrated mixed-flow pump units, especially in actual working scenarios such as agricultural irrigation, urban drainage, industrial circulating water, and water treatment, the transported liquids often contain solid impurities such as stones, sand, and fibers. When the unit directly processes these liquids containing solid impurities during transportation, the solid impurities will directly enter the interior of the pump body, causing wear and even damage to key components such as the impeller; at the same time, the intrusion of solid impurities may also affect the sealing effect of components such as bearings, thereby reducing the service life and operating stability of the equipment. Therefore, devices such as filter nets are set before transporting to the mixed-flow pump to intercept and filter the impurities.

[0004] In addition, in actual applications, existing filtering devices have certain defects. Some devices only use filter nets for simple interception and filtration. As the usage time increases, the filter nets are extremely prone to clogging, thereby affecting the normal use of the equipment and requiring regular cleaning of the filter nets, which is rather inconvenient to operate; while some devices are equipped with filter net cleaning devices that can clean and discharge the intercepted impurities, but due to the filter nets being inside the pipeline, the cleaning effect is not good, and during the process of discharging the impurities, the liquid will also be discharged together, and these liquids are often directly discarded without being effectively recycled and reused. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a corrosion-resistant integrated mixed-flow pump unit.

[0006] To achieve the aforementioned invention purpose, the technical solutions adopted by the present invention include: including a corrosion-resistant mixed-flow pump main body, the corrosion-resistant mixed-flow pump main body includes an input end and an output end, a connecting pipe is provided at the output end, an auxiliary pipe is provided between the connecting pipe and the output end through a connecting flange, a filtering and discharging mechanism is arranged inside the auxiliary pipe, an impurity temporary storage pipe matching the filtering and discharging mechanism is provided below the auxiliary pipe, and a collecting mechanism is provided on one side of the impurity temporary storage pipe.

[0007] Preferably, the filtering and discharging mechanism includes a rotating rod arranged inside the auxiliary pipe. Along the direction from the auxiliary pipe to the input end, the rotating rod is successively provided with a crankshaft, a filter screen, and an auxiliary impeller. A discharging component is arranged on the crankshaft, and the auxiliary impeller rotates around the central axis of the rotating rod.

[0008] Preferably, a rotating ring is rotatably arranged outside one end of the rotating rod close to the connecting pipe, and the top of the rotating ring is fixedly connected to the inner wall of the auxiliary pipe through a connecting rod.

[0009] Preferably, the discharging component includes a collar arranged on the crankshaft. A top sealing plate is connected below the collar through a rotating member, and a bottom supporting plate is arranged below the top sealing plate through a connecting column.

[0010] Preferably, sealing rings are arranged on the circumferential sides of the top sealing plate and the bottom supporting plate, and the sealing rings are in interference fit with the inner wall of the impurity temporary storage pipe.

[0011] In the present invention, the provided filtering and discharging assembly can conveniently filter solid impurities in the transported liquid, prevent them from entering the mixed flow pump, and avoid damage to components such as the impeller and sealing problems. Moreover, it can conveniently discharge the filtered impurities together to prevent blockage.

[0012] Preferably, a rectangular block is arranged at one end of the crankshaft close to the filter screen. A scraping plate is arranged on the rectangular block, and a cleaning brush matching the filter screen is arranged on the side wall of the scraping plate. In the present invention, through the cooperation of the provided scraping plate and the cleaning brush, the filter screen can be cleaned during use. At the same time, in cooperation with the discharging component, the cleaned impurities can be conveniently discharged to avoid blockage and ensure normal transportation.

[0013] Preferably, the collection mechanism includes a discharge pipe obliquely arranged on the side wall of the impurity temporary storage pipe. An impurity collection hopper is arranged at the low end of the discharge pipe. Leak holes are equidistantly arranged at the bottom of the discharge pipe, and a collection pipe communicating with the leak holes is arranged below the discharge pipe. A liquid recovery tank is arranged at the bottom end of the collection pipe.

[0014] Preferably, a piston chamber is formed between the bottom supporting plate and the bottom of the impurity temporary storage pipe. The liquid recovery tank is communicated with the piston chamber through a suction pipe. A return liquid pipe is communicated with the side wall of the impurity temporary storage pipe and is also communicated with the piston chamber. One-way valves are arranged on both the suction pipe and the return liquid pipe. A fixed pipe is arranged at the top end of the return liquid pipe. Arc-shaped pipes are symmetrically arranged on the fixed pipe. Sprayers are equidistantly and obliquely arranged below the arc-shaped pipes. The spraying direction of the sprayers is the same as the rotation direction of the auxiliary impeller. The sprayers below one group of arc-shaped pipes are adapted to the filter screen, and the sprayers below the other group of arc-shaped pipes are adapted to the auxiliary impeller.

[0015] In the present invention, through the cooperation of a liquid return pipe, a suction pipe, a nozzle, etc., while realizing the separate collection of the liquid discharged together with the impurities, the collected liquid can be re-extracted into the auxiliary pipeline and transported together with the transported liquid, avoiding liquid waste; moreover, the liquid sprayed out by the nozzle after re-extraction can, on the one hand, assist in driving the auxiliary impeller to rotate, and on the other hand, can flush the filter screen to ensure that the filter screen always maintains a good cleaning effect, further improving the operation stability and transportation efficiency of the unit and reducing the maintenance cost.

[0016] Preferably, connecting seats are equidistantly arranged on the top of the hydraulic recovery tank. A fixing block is provided on the top of the connecting seat through a spring. A knocking ball is provided on the top of the fixing block, and the knocking ball is matched with the discharge pipe. In the present invention, the provided collection mechanism can facilitate the discharge and collection of the cleaned impurities, and at the same time can also facilitate the separation of solids and liquids, facilitating separate collection, and thus facilitating subsequent treatment and recycling operations, which is relatively convenient.

[0017] Compared with the prior art, the advantages of the present invention include: (1) An anti-corrosion integrated mixed-flow pump unit provided by the present invention. By integrating functions of filtration, cleaning, separation and recovery, the present invention solves the technical pain points such as easy blockage, difficult maintenance and short service life of traditional anti-corrosion mixed-flow pumps when dealing with liquid containing impurities. At the same time, it takes into account corrosion resistance and operation efficiency, ensures reliability and low maintenance cost, and while realizing the separate collection of the liquid discharged together with the impurities, the collected liquid can be re-extracted into the auxiliary pipeline and transported together with the transported liquid, avoiding liquid waste; the liquid sprayed out by the nozzle after re-extraction can, on the one hand, assist in driving the auxiliary impeller to rotate, and on the other hand, can flush the filter screen to ensure that the filter screen always maintains a good cleaning effect, further improving the operation stability and transportation efficiency of the unit and reducing the maintenance cost; (2) An anti-corrosion integrated mixed-flow pump unit provided by the present invention. By arranging a filter screen in the auxiliary pipe, solid impurities in the transported liquid can be effectively intercepted, preventing impurities from entering the interior of the mixed-flow pump main body, thereby preventing problems such as impeller wear and bearing seal failure, significantly extending the service life of the equipment and improving the operation stability; (3) An anti-corrosion integrated mixed-flow pump unit provided by the present invention. Through the cooperation of the crankshaft driven by the rotating rod and the discharge assembly, the periodic cleaning and discharge of impurities in the impurity storage pipe are realized. The reciprocating motion of the upper sealing plate and the lower supporting plate cooperates with the filter screen cleaning brush, which can synchronously complete impurity collection and filter screen cleaning, avoiding the blockage of the flow channel caused by impurity accumulation, and ensuring the continuous and efficient operation of the pump unit; (4) The integrated corrosion-resistant mixed-flow pump unit provided by the present invention realizes the separation of solid impurities and liquid through the discharge pipe arranged obliquely and the bottom leak hole design. The impurities are uniformly collected by the impurity collection hopper, and the liquid flows back to the liquid recovery tank through the collection pipe, which is convenient for subsequent classification treatment and resource recycling, reduces the environmental load and improves the economic benefit. Utilizing the vibration generated by the operation of the pump unit, the discharge pipe is intermittently knocked by the knocking ball supported by the spring to promote the flow of impurities and liquid, prevent them from adhering or staying on the pipe wall, and further improve the solid-liquid separation efficiency and the thoroughness of discharging. (5) The integrated corrosion-resistant mixed-flow pump unit provided by the present invention has the auxiliary pipe detachably connected to the main body of the mixed-flow pump through a connecting flange. Users can flexibly choose whether to install the auxiliary pipe according to the characteristics of the conveyed medium (whether it contains impurities), taking into account different working conditions requirements, and at the same time reducing the equipment maintenance cost and downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the overall schematic diagram of an integrated corrosion-resistant mixed-flow pump unit in the present invention; Figure 2 It is the structural schematic diagram between the auxiliary pipe and the collection mechanism in an integrated corrosion-resistant mixed-flow pump unit in the present invention; Figure 3 It is the structural schematic diagram between the auxiliary pipe and the collection mechanism in an integrated corrosion-resistant mixed-flow pump unit in the present invention; Figure 4 It is the structural schematic diagram between the inside of the auxiliary pipe and the discharge pipe in an integrated corrosion-resistant mixed-flow pump unit in the present invention; Figure 5 It is the internal structural schematic diagram between the auxiliary pipe and the impurity temporary storage pipe in an integrated corrosion-resistant mixed-flow pump unit in the present invention; Figure 6 It is the structural schematic diagram of the filter discharge mechanism in an integrated corrosion-resistant mixed-flow pump unit in the present invention; Figure 7 It is the structural schematic diagram between the liquid return pipe and the arc-shaped pipe in an integrated corrosion-resistant mixed-flow pump unit in the present invention.

[0020] Reference Signs: 11. Corrosion-resistant mixed-flow pump body; 12. Input end; 13. Output end; 14. Connecting pipe; 21. Auxiliary pipe; 22. Connecting flange; 23. Impurity temporary storage pipe; 31. Discharge pipe; 32. Impurity collection hopper; 33. Liquid recovery tank; 34. Collection pipe; 35. Leak hole; 41. Knocking ball; 42. Fixed block; 43. Connecting seat; 44. Spring; 51. Filter screen; 52. Auxiliary impeller; 53. Rotating rod; 61. Connecting rod; 62. Rotating ring; 71. Crankshaft; 72. Collar; 73. Rotating part; 74. Upper sealing plate; 75. Lower supporting plate; 76. Connecting column; 77. Sealing ring; 81. Rectangular block; 82. Scraper; 83. Cleaning brush; 91. Return liquid pipe; 92. Extraction pipe; 93. Check valve; 94. Fixed pipe; 95. Arc pipe; 96. Sprayer. Detailed implementation manner

[0021] In view of the deficiencies in the prior art, the inventors of this case have proposed the technical solution of the present invention through long-term research and a large number of practices. The following will further explain the technical solution, its implementation process and principles, etc. in combination with the drawings in the embodiments of this application and specific implementation cases.

[0022] It should be noted that the embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, the present invention covers any alternatives, modifications, equivalent methods and solutions made on the spirit, principle and scope of the present invention defined by the claims. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] In the description of this application, words such as "first", "second", "third" and the like do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not represent a quantity limit, but indicate the existence of at least one. Words such as "including" or "comprising" mean that the elements or objects appearing before "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0024] In the description of the present application, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, when using position terms such as both sides, outer side, upper and lower, etc., it should be understood that they are only used for easy understanding and description, considering that the structure may be oriented to other positions.

[0025] In the description of the present application, unless otherwise clearly specified and defined, the technical terms or scientific terms used should have the ordinary meaning understood by those with ordinary skills in the field to which the present application belongs. Terms such as "installation", "connection", "coupling", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a contact connection or an integral connection; for those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0026] The embodiments of the present invention are intended to introduce and illustrate the structural composition of the corrosion-resistant integrated mixed-flow pump unit and the cooperation relationship between the various component structures. Unless otherwise specified, the dimensions, materials, manufacturing processes, etc. of the various components in the corrosion-resistant integrated mixed-flow pump unit in the embodiments of the present invention can be selected according to specific circumstances, and no special limitations and descriptions are made here.

[0027] Furthermore, in order to enable the public to have a better understanding of the present invention, in the following detailed description of the present invention, some specific details are described in detail. Those skilled in the art can fully understand the present invention without the description of these detail parts.

[0028] Embodiment 1 Please refer to Figures 1-6, a corrosion-resistant integrated mixed-flow pump unit, including a corrosion-resistant mixed-flow pump main body 11. The corrosion-resistant mixed-flow pump main body 11 includes an input end 12 and an output end 13. A connecting pipe 14 is provided at the output end 13. The connecting pipe 14 is used to connect the liquid to be transported. Only part of the illustration is shown in the figure. The corrosion-resistant mixed-flow pump main body 11 can be installed and fixed through a mounting seat and bolts (not shown in the figure) to ensure stability during assembly and use. The corrosion-resistant mixed-flow pump main body 11 mainly consists of a pump body and a pump cover, an impeller, a pump shaft and a bearing system, a shaft seal device, etc. For the pump body, it is usually of volute type or diffuser type design, responsible for accommodating the impeller and guiding the fluid flow. The volute pump body converts kinetic energy into pressure energy through a spiral flow channel, while the diffuser pump body realizes the axial flow of the fluid through a curved diffuser. To ensure corrosion resistance, metal materials such as high-molybdenum stainless steel and nickel-based alloys or non-metal materials such as carbon fiber-reinforced plastics and ceramic composites for strong corrosive media such as concentrated acids, strong alkalis, seawater or high-temperature media are used. Processes such as supersonic spraying (such as ceramic coatings), electroplating (such as hard chromium coatings), and electroless nickel-phosphorus plating are used to improve the surface hardness and corrosion resistance of the impeller and pump body. This is a relatively mature technology and will not be elaborated here. An auxiliary pipe 21 is provided between the connecting pipe 14 and the output end 13 through a connecting flange 22. When transporting liquids without solid impurities, the auxiliary pipe 21 does not need to be installed. It can be assembled and selected according to actual transportation needs, which is flexible and convenient. The auxiliary pipe 21 can be installed when transporting liquids containing solid impurities to filter the impurities and prevent them from entering the inside of the corrosion-resistant mixed-flow pump main body 11, causing damage to the impeller, etc., or bearing and seal failure. An internal filtration and discharge mechanism is provided in the auxiliary pipe 21. A impurity temporary storage pipe 23 matching the filtration and discharge mechanism is provided under the auxiliary pipe 21. A collection mechanism is provided on one side of the impurity temporary storage pipe 23 to facilitate the cleaning and discharge of the filtered impurities and prevent blockage.

[0029] Please refer to Figures 1-6, when transporting liquid, impurities in the liquid are filtered as needed to avoid damage to subsequent impellers, bearings, etc., affecting the service life and sealing effect, etc. Solids impurities in the transported liquid are filtered. A filter discharge mechanism is arranged inside the auxiliary pipe 21. The filter discharge mechanism includes a rotating rod 53 arranged inside the auxiliary pipe 21. Along the direction from the auxiliary pipe 21 to the input end 12, the rotating rod 53 is successively provided with a crankshaft 71, a filter net 51, and an auxiliary impeller 52. The auxiliary impeller 52 rotates around the central axis of the rotating rod 53. When the corrosion-resistant mixed-flow pump main body 11 works to extract liquid, when the liquid flows axially along the connecting pipe 14, the liquid generates a circumferential force on the auxiliary impeller 52, driving the auxiliary impeller 52 to rotate around the central axis of the rotating rod 53, and driving the rotating rod 53 and the crankshaft 71 to rotate synchronously. Among them, the filter net 51 can intercept and filter large-particle impurities in the liquid to prevent them from entering the corrosion-resistant mixed-flow pump main body 11. A discharge assembly is arranged on the crankshaft 71 to facilitate the cleaning and discharge of the filtered impurities. To ensure the stable rotation of the rotating rod 53, a rotating ring 62 similar to a bearing is rotatably arranged outside one end of the rotating rod 53 close to the connecting pipe 14. The top of the rotating ring 62 is fixedly connected to the inner wall of the auxiliary pipe 21 through a connecting rod 61. The middle part of the rotating shaft and the filter net 51 can be rotatably connected through a bearing (not shown in the figure). The rotating ring 62, the rotating rod 53, and the middle part of the filter net 51 are on the same axis. The discharge assembly includes a collar 72 arranged on the crankshaft 71. The lower part of the collar 72 is connected with an upper sealing plate 74 through a rotating part 73. By rotating the crankshaft 71, the upper sealing plate 74 can be driven to reciprocate up and down in the impurity storage pipe 23 in cooperation with the collar 72 and the rotating part 73. A lower supporting plate 75 is arranged under the upper sealing plate 74 through a connecting column 76. Sealing rings 77 are arranged on the circumferential sides of the upper sealing plate 74 and the lower supporting plate 75. The sealing rings 77 are in interference fit with the inner wall of the impurity storage pipe 23 to ensure the sealing effect. When the crankshaft 71 rotates to the uppermost position, the upper sealing plate 74 leaves the impurity storage pipe 23, and the lower supporting plate 75 is located inside the impurity storage pipe 23, facilitating the filtered impurities to enter between the two for subsequent discharge. When the crankshaft 71 rotates to the lowermost position, the upper sealing plate 74 enters the impurity storage pipe 23. At this time, the discharge pipe 31 in the collection mechanism is located between the upper sealing plate 74 and the lower supporting plate 75, facilitating the impurities to flow into the discharge pipe 31. To facilitate the outflow, the upper surface of the lower supporting plate 75 is inclined to facilitate the impurities and liquid to flow into the discharge pipe 31. To facilitate the simultaneous cleaning of the filter net 51 to avoid blockage and affect the liquid transportation, a rectangular block 81 is fixedly installed at one end of the crankshaft 71 close to the filter net 51. A scraper 82 is welded on the rectangular block 81. A cleaning brush 83 matching the filter net 51 is installed on the side wall of the scraper 82 to facilitate the cleaning of the filter net 51.

[0030] Please refer to Figures 1-7, in order to facilitate the discharge of impurities, and at the same time recover a small amount of liquid discharged together, and separately process them for convenient recycling and reuse, etc., a collection mechanism is provided on the side wall of the impurity storage pipe 23. The collection mechanism includes a discharge pipe 31 inclined on the side wall of the impurity storage pipe 23. The inclination angle can be 3 - 5°, can be 3°, 4°, 5°, preferably 5°, which is convenient for impurities and liquid to flow down. According to the actual situation, it can also be other inclination angles to ensure the flow and discharge of impurities. The lower end of the discharge pipe 31 is provided with an impurity collection hopper 32, which is convenient for unified collection of impurities and subsequent processing. The bottom of the discharge pipe 31 is equidistantly provided with leakage holes 35, which is convenient for the liquid flowing out together with the impurities to flow down and for separate processing. And a collection pipe 34 communicating with the leakage holes 35 is provided below the discharge pipe 31. The bottom end of the collection pipe 34 is provided with a liquid recovery tank 33, which is convenient for unified collection of the flowing-down liquid and subsequent processing. A piston chamber is formed between the lower support plate 75 and the bottom of the impurity storage pipe 23. The sealing ring 77 on the circumferential side of the lower support plate 75 is in interference fit with the inner wall of the impurity storage pipe 23. The liquid recovery tank 33 is communicated with the piston chamber through an extraction pipe 92. A return liquid pipe 91 is communicated with the side wall of the impurity storage pipe 23, and the return liquid pipe 91 is communicated with the piston chamber. One-way valves 93 are provided on both the extraction pipe 92 and the return liquid pipe 91, which can ensure that when the crankshaft 71 drives the lower support plate 75 to move upward on the impurity storage pipe 23, the liquid in the liquid recovery tank 33 is pumped into the piston chamber through the extraction pipe 92. When the crankshaft 71 drives the lower support plate 75 to move downward on the impurity storage pipe 23, the liquid in the piston chamber is pumped into the arc-shaped pipe 95 of the fixed pipe 94 through the return liquid pipe 91, and then sprayed out through the nozzle 96 and flows back into the auxiliary pipe 21 again. The top end of the return liquid pipe 91 is provided with a fixed pipe 94. Arc-shaped pipes 95 are symmetrically provided on the fixed pipe 94. Nozzles 96 are equidistantly and obliquely provided below the arc-shaped pipes 95. For the nozzles 96, the number of nozzles 96 below the same arc-shaped pipe 95 can be two, three or four groups, preferably three groups. And the nozzles 96 are obliquely arranged, which can ensure that the spraying direction of the nozzles 96 is the same as the rotation direction of the auxiliary impeller 52, and cooperate with the liquid flow to assist in driving the rotation of the auxiliary impeller 52. The nozzles 96 below one group of arc-shaped pipes 95 are adapted to the filter screen 51, and the nozzles 96 below the other group of arc-shaped pipes 95 are adapted to the auxiliary impeller 52. The recycled liquid sprayed out by the nozzles 96 below one group of arc-shaped pipes 95 can assist in cleaning the filter screen 51 to ensure the cleaning effect and not affect the subsequent transportation. The recycled liquid sprayed out by the nozzles 96 below the other group of arc-shaped pipes 95 cooperates with the liquid flow to assist in driving the rotation of the auxiliary impeller 52, which is convenient for driving the crankshaft 71 to rotate. Connecting seats 43 are equidistantly provided on the top of the hydraulic recovery tank. A fixed block 42 is provided on the top of the connecting seat 43 through a spring 44. A knocking ball 41 is provided on the top of the fixed block 42, and the knocking ball 41 is matched with the discharge pipe 31. For the knocking ball 41, it can be made of metal such as stainless steel or other materials with a relatively large density. In order to avoid damage to the discharge pipe 31, the outside of the knocking ball 41 is wrapped with a rubber layer. And during the working process of the corrosion-resistant mixed-flow pump main body 11,Utilize the vibration generated during operation. At this time, the knocking ball 41 cooperates with the spring 44 to vibrate, assisting in knocking on the discharge pipe 31 to facilitate the flow of impurities and liquid.

[0031] Working principle: When transporting liquid without solid impurities, connect the connecting pipe 14 to the input end 12 through the connecting flange 22, and then connect the conveying end to transport the liquid. When transporting liquid containing fixed impurities, connect the auxiliary pipe 21 through the connecting flange 22 and install the auxiliary pipe 21 between the input end 12 and the connecting pipe 14. When transporting the liquid, the liquid passes through the auxiliary pipe 21, and the impurities are filtered through the filter screen 51. Then the liquid flows to the input end 12. During the flowing process, cooperating with the auxiliary impeller 52, it can drive the rotating rod 53 to rotate on the rotating ring 62 and the filter screen 51. At this time, the rectangular block 81 and the scraping plate 82 rotate, and the filter screen 51 is cleaned by the cleaning brush 83. While the rotating rod 53 is rotating, the crankshaft 71 rotates accordingly. At this time, cooperating with the collar 72 and the rotating part 73, it can drive the upper sealing plate 74 to move up and down reciprocally in the impurity temporary storage pipe 23. When the crankshaft 71 rotates to the uppermost position, the upper sealing plate 74 leaves the impurity temporary storage pipe 23, and the lower supporting plate 75 is located inside the impurity temporary storage pipe 23, which facilitates the filtered impurities to enter between the two for subsequent discharge. When the crankshaft 71 rotates to the lowermost position, the upper sealing plate 74 enters the impurity temporary storage pipe 23, and the impurities and a small amount of liquid enter the impurity temporary storage pipe 23 and are located on the lower supporting plate 75. Then the impurities flow into the discharge pipe 31. Under the action of the leakage hole 35, the liquid flows through the collecting pipe 34 to the liquid recovery tank 33. The liquid in the liquid recovery tank 33 is pumped into the piston cavity through the extraction pipe 92. When the crankshaft 71 drives the lower supporting plate 75 to move downward in the impurity temporary storage pipe 23, the liquid in the piston cavity is pumped into the arc-shaped pipe 95 of the fixed pipe 94 through the liquid return pipe 91, and then sprayed out through the nozzle 96. The nozzles 96 under a group of arc-shaped pipes 95 spray the recovered liquid to assist in cleaning the filter screen 51 to ensure the cleaning effect and not affect the subsequent transportation. The nozzles 96 under the other group of arc-shaped pipes 95 spray the recovered liquid to cooperate with the liquid flow to assist in driving the auxiliary impeller 52 to rotate, which facilitates driving the crankshaft 71 to rotate. The solid impurities flow to the impurity collection hopper 32 and are collected separately. During the operation of the corrosion-resistant mixed-flow pump body 11, utilize the vibration generated during operation. At this time, the knocking ball 41 cooperates with the spring 44 to vibrate, assisting in knocking on the discharge pipe 31 to facilitate the flow of impurities and liquid and facilitate the separation and collection operation.

[0032] It should be understood that the above embodiments are only used to illustrate the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can be made. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An integrated corrosion-resistant mixed-flow pump unit, comprising a corrosion-resistant mixed-flow pump main body (11), the corrosion-resistant mixed-flow pump main body (11) including an input end (12) and an output end (13), the output end (13) being provided with a connecting pipe (14), characterized in that: An auxiliary pipe (21) is provided between the connecting pipe (14) and the output end (13) through a connecting flange (22). An internal filtering and discharging mechanism is provided inside the auxiliary pipe (21). A impurity temporary storage pipe (23) matching the filtering and discharging mechanism is provided under the auxiliary pipe (21). A collecting mechanism is provided on one side of the impurity temporary storage pipe (23).

2. The integrated mixed-flow pump unit with corrosion resistance according to claim 1, characterized in that: The filtering and discharging mechanism includes a rotating rod (53) arranged inside the auxiliary pipe (21). Along the direction from the auxiliary pipe (21) to the input end (12), a crankshaft (71), a filter net (51) and an auxiliary impeller (52) are sequentially arranged on the rotating rod (53). A discharging component is arranged on the crankshaft (71), and the auxiliary impeller (52) rotates around the central axis of the rotating rod (53).

3. The integrated corrosion-resistant mixed-flow pump unit according to claim 2, characterized in that: A rotating ring (62) is rotatably arranged outside one end of the rotating rod (53) close to the connecting pipe (14). The top of the rotating ring (62) is fixedly connected with the inner wall of the auxiliary pipe (21) through a connecting rod (61).

4. The integrated corrosion-resistant mixed-flow pump unit according to claim 3, characterized in that: The discharging component includes a collar (72) arranged on the crankshaft (71). A upper sealing plate (74) is connected under the collar (72) through a rotating part (73). A lower supporting plate (75) is arranged under the upper sealing plate (74) through a connecting column (76).

5. The integrated corrosion-resistant mixed-flow pump unit according to claim 4, characterized in that: Sealing rings (77) are arranged on the circumferential sides of the upper sealing plate (74) and the lower supporting plate (75). The sealing rings (77) are in interference fit with the inner wall of the impurity temporary storage pipe (23).

6. The integrated corrosion-resistant mixed-flow pump unit according to claim 5, characterized in that: A rectangular block (81) is arranged at one end of the crankshaft (71) close to the filter net (51). A scraping plate (82) is arranged on the rectangular block (81). A cleaning brush (83) matching the filter net (51) is arranged on the side wall of the scraping plate (82).

7. An integrated corrosion-resistant mixed-flow pump unit according to claim 6, characterized in that: The collecting mechanism includes a discharging pipe (31) obliquely arranged on the side wall of the impurity temporary storage pipe (23). An impurity collecting hopper (32) is arranged at the low end of the discharging pipe (31). Leak holes (35) are equidistantly arranged at the bottom of the discharging pipe (31). A collecting pipe (34) communicated with the leak holes (35) is arranged under the discharging pipe (31). A liquid recovery tank (33) is arranged at the bottom end of the collecting pipe (34).

8. The integrated mixed-flow pump unit with corrosion resistance according to claim 7, characterized in that: A piston chamber is formed between the lower supporting plate (75) and the bottom of the impurity temporary storage pipe (23). The liquid recovery tank (33) is communicated with the piston chamber through a extraction pipe (92). A liquid return pipe (91) is communicated with the side wall of the impurity temporary storage pipe (23). The liquid return pipe (91) is communicated with the piston chamber. One-way valves (93) are arranged on both the extraction pipe (92) and the liquid return pipe (91). A fixed pipe (94) is arranged at the top end of the liquid return pipe (91). Arc-shaped pipes (95) are symmetrically arranged on the fixed pipe (94). Sprayers (96) are equidistantly and obliquely arranged under the arc-shaped pipes (95). The spraying direction of the sprayers (96) is the same as the rotating direction of the auxiliary impeller (52). The sprayers (96) under one group of arc-shaped pipes (95) are adapted to the filter net (51), and the sprayers (96) under the other group of arc-shaped pipes (95) are adapted to the auxiliary impeller (52).

9. The integrated corrosion-resistant mixed-flow pump unit according to claim 8, characterized in that: The top of the hydraulic recovery box is equidistantly provided with connecting seats (43). The top of the connecting seats (43) is provided with fixing blocks (42) through springs (44). The top of the fixing blocks (42) is provided with knocking balls (41), and the knocking balls (41) are matched with the discharge pipes (31).

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