A self-cleaning axial flow pump

Abstract

The present invention relates to the technical field of submersible axial flow pumps, and discloses a self-cleaning axial flow pump, comprising an axial flow pump body, a filter base arranged at the water inlet end of the axial flow pump body, a filter element having a plurality of filter holes and in the shape of a hollow sphere rotatably fitted in the filter base, a shaft rod coaxial with the filter element fixedly connected to the filter element, the shaft rod extends out of the filter base and is fixedly connected to a rotating paddle, a sewage discharge channel is arranged on the outer wall of the filter base, the sewage discharge channel is connected to a discharge hole provided on the side wall of the filter base and connected to an inner cavity of the filter base, the discharge hole is located below the shaft rod, a jet tube is arranged on the outer wall of the filter base and connected to the inner cavity of the filter base, an end of the jet tube away from the filter base faces the rotating paddle, the present invention can realize self-cleaning capability, so that the filter element inside the filter base maintains good filtering efficiency, thereby improving the water pumping efficiency and the service life of the filter base.

Description

Technical Field

[0001] The invention relates to the technical field of submersible axial flow pumps, in particular to a self-cleaning axial flow pump. Background Art

[0002] Axial flow pumps are the main pump type used in low-lift pump stations. Axial flow pumps have a simple structure, flexible installation, and a variety of forms. Axial flow pumps are widely used in water diversion for large basins and ships and agricultural irrigation. The flow inside an axial flow pump is generally a complex three-dimensional unsteady turbulent flow. The flow condition determines whether the pump unit can operate safely. The efficient operation of the axial flow pump is conducive to the efficient use of energy. The working principle of the axial flow pump is different from that of the centrifugal pump. It works by relying on the lift generated by the rotation of the impeller on the water flow. This type of pump is called an axial flow pump because the water flows into the impeller and out of the guide vane along the axial direction.

[0003] Existing axial flow pumps generally use a motor to drive the impeller to rotate and suck the liquid into the axial flow pump. However, when the axial flow pump is transporting sewage or liquid containing impurities, the sewage entering the axial flow pump is often filtered through a filter. During long-term use, a large amount of impurities are easily accumulated on the surface and mesh of the filter, thereby affecting the circulation speed of the liquid. Therefore, the staff needs to stop the machine for replacement, thereby reducing the efficiency of liquid transportation. Summary of the invention

[0004] The object of the present invention is to provide a self-cleaning axial flow pump, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a self-cleaning axial flow pump, comprising:

[0006] Axial flow pump body;

[0007] A filter base is arranged at the water inlet end of the axial flow pump body, a filter element having a plurality of filter holes and in the shape of a hollow ball is rotatably fitted in the filter base, a shaft coaxial with the filter element is fixedly connected to the filter element, and the shaft extends out of the filter base and is fixedly connected to a rotating paddle;

[0008] A sewage discharge channel is arranged on the outer side wall of the filter base, the sewage discharge channel is connected with a discharge hole which is arranged on the side wall of the filter base and is connected with the inner cavity of the filter base, and the discharge hole is located below the shaft;

[0009] A jet tube is arranged on the outer side wall of the filter base and is communicated with the inner cavity of the filter base. One end of the jet tube away from the filter base faces the rotating paddle.

[0010] Optionally, the water inlet end of the axial flow pump body is fixedly connected to and communicated with a water inlet pipe, a second mounting plate is fixedly connected to the water inlet pipe, a plurality of first connecting holes with first fixing bolts are provided on the second mounting plate, and the top of the filter base is detachably connected to the first mounting plate, a plurality of first fixing threaded holes are provided on the first mounting plate, and the plurality of first fixing threaded holes are used for detachably connecting with the plurality of first fixing bolts.

[0011] Optionally, the filter base includes a first shell and a second shell that are enclosed in a cylindrical shape, and a plurality of one-to-one corresponding connecting plates are fixedly connected to the first shell and the second shell respectively, and the two corresponding connecting plates are detachably connected via a plurality of third connecting holes, third fixing bolts and third fixing threaded holes.

[0012] Optionally, the first mounting plate is provided with a plurality of second connecting holes with second fixing bolts, and the top ends of the first shell and the second shell are respectively provided with a plurality of second fixing threaded holes, and the plurality of second fixing threaded holes are used for detachably connecting with the plurality of second fixing bolts.

[0013] Optionally, a bearing hole is provided on the side wall of the filter base, and a bearing rotatably matched with the shaft rod is provided in the bearing hole.

[0014] Optionally, the bearing hole consists of two semicircular holes, and the two semicircular holes are respectively opened at the joint of the first shell and the second shell.

[0015] Optionally, a groove is formed on the inner side wall of the filter base in a circumferential direction around the maximum diameter of the filter element.

[0016] Optionally, the drainage holes are multiple and circumferentially arranged on the side wall of the filter base.

[0017] Optionally, the width of the drainage hole is 5mm-8mm.

[0018] Optionally, the filter hole diameter is 4mm-5mm.

[0019] The present invention discloses the following technical effects: a filter element with a plurality of filter holes and in the shape of a hollow sphere is arranged in a filter base, when the axial flow pump body is driven by electricity, the filter element separates impurities in the water flow when water flows through the filter base, and a part of the water flows through the jet tube to impact the rotating paddle, so that the slurry drives the filter element to rotate, so that the filter element can achieve self-cleaning ability while achieving the filtering effect, and a sewage discharge channel is arranged outside the filter base so that the filtered debris can be discharged, thereby avoiding the accumulation of debris, so that the filter element inside the filter base maintains good filtering efficiency, and improves the pumping efficiency and the service life of the filter base. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the main structure of the axial flow pump of the present invention;

[0023] Figure 3 It is a schematic structural diagram of a first mounting plate of the present invention;

[0024] Figure 4 It is a schematic diagram of the first shell structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the second shell structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the filter structure of the present invention.

[0027] In the figure: 1. axial flow pump body; 11. second mounting plate; 12. first fixing bolt; 13. water inlet pipe; 14. first connecting hole; 2. filter base; 21. first mounting plate; 211. first fixing threaded hole; 212. second connecting hole; 213. second fixing bolt; 22. first shell; 221. jet tube; 222. discharge hole; 223. groove; 224. bearing hole; 225. second fixing threaded hole; 226. third fixing bolt; 227. sewage flow channel; 228. third connecting hole; 229. connecting plate; 23. second shell; 231. third fixing threaded hole; 24. filter element; 241. paddle; 242. bearing; 243. filter hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figure 1-Figure 6 The present invention provides a self-cleaning axial flow pump, comprising:

[0031] Axial flow pump body 1;

[0032] The filter base 2 is arranged at the water inlet end of the axial flow pump body 1. A filter element 24 having a plurality of filter holes 243 and in the shape of a hollow ball is rotatably matched in the filter base 2. A shaft coaxial with the filter element 24 is fixedly connected to the filter element 24. The shaft extends out of the filter base 2 and is fixedly connected to a rotating paddle 241.

[0033] A sewage discharge channel 227 is provided on the outer wall of the filter base 2. The sewage discharge channel 227 is connected to a discharge hole 222 provided on the side wall of the filter base 2 and connected to the inner cavity of the filter base 2. The discharge hole 222 is located below the shaft;

[0034] The jet tube 221 is disposed on the outer wall of the filter base 2 and communicated with the inner cavity of the filter base 2 . One end of the jet tube 221 away from the filter base 2 faces the rotating paddle 241 .

[0035] By arranging a hollow spherical filter element 24 with multiple filter holes 243 in the filter base 2, when the axial flow pump body 1 is driven by electricity, the filter element 24 separates impurities in the water flow when water flows through the filter base 2, and a part of the water flows through the jet tube 221 to impact the paddle 241, and the paddle 241 is used to convert its potential energy and kinetic energy so that the filter element 24 drives the filter element 24 to rotate, so that the filter element 24 can achieve self-cleaning ability while achieving the filtering effect, and a sewage discharge channel 227 is arranged outside the filter base 2 so that the filtered debris can be discharged, thereby avoiding the accumulation of debris, so that the filter element 24 inside the filter base 2 maintains a good filtering efficiency, and improves the pumping efficiency and the service life of the filter base 2.

[0036] Furthermore, the jet tube 221 can be arbitrarily arranged on the first shell 22 or the second shell 23 .

[0037] A further optimized solution is that the water inlet end of the axial flow pump body 1 is fixedly connected to and communicated with a water inlet pipe 13, to which a second mounting plate 11 is fixedly connected, and a plurality of first connecting holes 14 with first fixing bolts 12 are provided on the second mounting plate 11, and a first mounting plate 21 is detachably connected to the top of the filter base 2, and a plurality of first fixing threaded holes 211 are provided on the first mounting plate 21, and the plurality of first fixing threaded holes 211 are used for detachably connecting with a plurality of first fixing bolts 12.

[0038] By adopting the threaded assembly method of the first fixing bolt 12 and the first fixing threaded hole 211, the axial flow pump body 1 and the filter base 2 are easily assembled and disassembled.

[0039] According to a further optimization scheme, the filter base 2 includes a first shell 22 and a second shell 23 which are enclosed in a cylindrical shape, and a plurality of corresponding connecting plates 229 are fixedly connected to the first shell 22 and the second shell 23 respectively, and the two corresponding connecting plates 229 are detachably connected to each other through a plurality of third connecting holes 228, third fixing bolts 226 and third fixing threaded holes 231.

[0040] The threaded assembly method using the third fixing bolt 226 and the third fixing threaded hole 231 facilitates assembly and disassembly of the filter base 2 .

[0041] According to a further optimization scheme, a plurality of second connection holes 212 with second fixing bolts 213 are provided on the first mounting plate 21, and a plurality of second fixing threaded holes 225 are respectively provided at the top ends of the first shell 22 and the second shell 23, and the plurality of second fixing threaded holes 225 are used for detachably connecting with the plurality of second fixing bolts 213.

[0042] The threaded assembly of the second fixing bolt 213 and the second fixing threaded hole 225 facilitates assembly and disassembly of the first mounting plate 21 and the first shell 22 and the second shell 23 .

[0043] According to a further optimized solution, a bearing hole 224 is provided on the side wall of the filter base 2, and a bearing 242 rotatably matched with the shaft rod is provided in the bearing hole 224.

[0044] The bearing 242 and the bearing hole 224 are fixed by interference fit, so that the bearing 242 supports the shaft rod and the filter element 24 , and a pair of shaft rods are provided on the filter element 24 to improve the stability of the filter element 24 .

[0045] According to a further optimized solution, the bearing hole 224 is composed of two semicircular holes, and the two semicircular holes are respectively opened at the joint of the first shell 22 and the second shell 23 to facilitate the assembly of the bearing 242.

[0046] According to a further optimized solution, a groove 223 is circumferentially formed on the inner wall of the filter base 2 around the maximum diameter of the filter element 24 .

[0047] The groove 223 is divided into two parts, which are respectively opened on the inner walls of the first shell 22 and the second shell 23. The groove 223 can prevent the filter element 24 from being blocked by debris during rotation to a greater extent. The width and depth of the groove should be as small as possible while avoiding the filter element 24 from being blocked during rotation.

[0048] According to a further optimized solution, there are multiple drain holes 222 which are circumferentially arranged on the side wall of the filter base 2 to improve the efficiency of draining impurities.

[0049] According to a further optimization scheme, the width of the drain hole 222 is 5 mm to 8 mm.

[0050] According to a further optimization scheme, the diameter of the filter hole 243 is 4 mm to 5 mm.

[0051] Working principle: The present invention is placed in the pumping area, and the axial flow pump body 1 is driven by electricity to work. During the process of the axial flow pump body 1 pumping water, after the water enters the filter base 2, a small amount of water will impact the paddle 241 through the jet tube 221, driving the filter element 24 to rotate. When most of the water passes through the filter element 24, its debris is separated, and some of the blocked sand and gravel roll along the surface of the filter element 24 and are discharged through the discharge hole 222 and the sewage channel 227. Some of the water plants and other debris stuck in the filter hole 243 are impacted by the water flow in different directions during the rotation of the filter element 24, thereby improving the self-cleaning ability of the filter base 2. At the same time, through the setting of the groove 223 on the inner wall of the first shell 22 and the second shell 23, the ability of the filter base 2 to continue working and resist blocking is improved.

[0052] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A self-cleaning axial flow pump, characterized in that: include: Axial flow pump body (1); A filter base (2) is arranged at the water inlet end of the axial flow pump body (1), and a filter element (24) having a plurality of filter holes (243) and in the shape of a hollow ball is rotatably fitted in the filter base (2), and a shaft coaxial with the filter element (24) is fixedly connected to the filter element (24), and the shaft extends out of the filter base (2) and is fixedly connected to a rotating paddle (241); a sewage discharge channel (227) provided on the outer wall of the filter base (2), the sewage discharge channel (227) being connected to a drainage hole (222) provided on the side wall of the filter base (2) and communicating with the inner cavity of the filter base (2), the drainage hole (222) being located below the shaft; A jet tube (221) is arranged on the outer wall of the filter base (2) and is connected to the inner cavity of the filter base (2); one end of the jet tube (221) away from the filter base (2) faces the rotating paddle (241).

2. A self-cleaning axial flow pump according to claim 1, characterized in that: The water inlet end of the axial flow pump body (1) is fixedly connected to and communicated with a water inlet pipe (13); a second mounting plate (11) is fixedly connected to the water inlet pipe (13); a plurality of first connection holes (14) with first fixing bolts (12) are provided on the second mounting plate (11); a first mounting plate (21) is detachably connected to the top end of the filter base (2); a plurality of first fixing threaded holes (211) are provided on the first mounting plate (21); the plurality of first fixing threaded holes (211) are used for detachably connecting with the plurality of first fixing bolts (12).

3. A self-cleaning axial flow pump according to claim 2, characterized in that: The filter base (2) comprises a first shell (22) and a second shell (23) which are enclosed in a cylindrical shape. A plurality of corresponding connecting plates (229) are fixedly connected to the first shell (22) and the second shell (23), respectively. The two corresponding connecting plates (229) are detachably connected to each other via a plurality of third connecting holes (228), third fixing bolts (226) and third fixing threaded holes (231).

4. A self-cleaning axial flow pump according to claim 3, characterized in that: The first mounting plate (21) is provided with a plurality of second connection holes (212) with second fixing bolts (213), and the top ends of the first shell (22) and the second shell (23) are respectively provided with a plurality of second fixing threaded holes (225), and the plurality of second fixing threaded holes (225) are used for being detachably connected to the plurality of second fixing bolts (213).

5. The self-cleaning axial flow pump according to claim 3, characterized in that: A bearing hole (224) is provided on the side wall of the filter base (2), and a bearing (242) rotatably engaged with the shaft is provided in the bearing hole (224).

6. A self-cleaning axial flow pump according to claim 5, characterized in that: The bearing hole (224) consists of two semicircular holes, and the two semicircular holes are respectively opened at the joint of the first shell (22) and the second shell (23).

7. The self-cleaning axial flow pump according to claim 1, characterized in that: A groove (223) is circumferentially formed on the inner side wall of the filter base (2) around the maximum diameter of the filter element (24).

8. The self-cleaning axial flow pump according to claim 1, characterized in that: The drainage holes (222) are multiple and circumferentially arranged on the side wall of the filter base (2).

9. The self-cleaning axial flow pump according to claim 1, characterized in that: The width of the drainage hole (222) is 5mm-8mm.

10. The self-cleaning axial flow pump according to claim 1, characterized in that: The filter hole (243) has a diameter of 4 mm to 5 mm.

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