Submersible full tubular pump with water lubricated bearing

Abstract

The utility model discloses a submersible full tubular pump with a water lubricated bearing, which relates to the field of submersible full tubular pump equipment, and comprises a submersible full tubular pump body, a water inlet pipeline, a water outlet pipeline, a floating object filtering mechanism, a filtering plate, a flushing mechanism and a collecting box, and the water inlet pipeline and the water outlet pipeline are respectively arranged at the water inlet end and the water outlet end of the submersible full tubular pump body. The floating object filtering mechanism used for filtering impurities in water and the filtering plate are sequentially arranged in the water inlet pipeline in the water flow direction, the flushing mechanism is arranged at the top of the water inlet pipeline, and the working end of the flushing mechanism extends into the water inlet pipeline and is located above the filtering plate. The other end of the washing mechanism communicates with the water outlet pipeline through a connecting pipeline, a discharging opening is formed in the bottom of the water inlet pipeline, and the collecting box is arranged at the bottom of the water inlet pipeline and communicates with the water inlet pipeline through the discharging opening. According to the utility model, impurities in water are effectively filtered, the filter plate is prevented from being blocked, and the stable operation of the submersible full tubular pump is ensured.

Description

Technical Field

[0001] The utility model relates to the field of submersible full-flow pump equipment, in particular to a submersible full-flow pump with a water-lubricated bearing. Background Art

[0002] The cross-flow submersible electric pump is mainly used for electromechanical drainage and irrigation, flood control and drainage, or low-lift and high-flow water intake projects combined with drainage and irrigation. Its impeller is installed in the rotor cavity of the motor and forms a whole with the rotor. When working, the water flows through the rotor cavity. It has the characteristics of good hydraulic performance, smooth flow channel and small axial size.

[0003] The water contains certain sand and suspended impurities, especially the water in rainwater pumping stations and sewage treatment facilities used for municipal drainage contains a large amount of granular solid matter. When the submersible full-flow pump is pumping water, a large amount of debris in the water enters the pump and easily collides with the turbine blades, causing damage to the turbine and making the submersible full-flow pump unusable, thus greatly reducing its stability and reliability.

[0004] Therefore, how to develop a water-lubricated bearing submersible full-flow pump that can effectively filter impurities in the water while preventing the filter plate from being blocked and ensuring the stable operation of the submersible full-flow pump has become a technical problem that needs to be urgently solved by people in this field. Utility Model Content

[0005] The utility model aims to provide a submersible full-flow pump with a water-lubricated bearing, which can effectively filter impurities in water and prevent the filter plate from being blocked, thereby ensuring the stable operation of the submersible full-flow pump.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model discloses a water-lubricated bearing submersible full-flow pump, comprising a submersible full-flow pump body, a water inlet pipe, a water outlet pipe, a floating object filtering mechanism, a filter plate, a flushing mechanism and a collecting box, wherein the water inlet pipe and the water outlet pipe are respectively installed at the water inlet end and the water outlet end of the submersible full-flow pump body, the floating object filtering mechanism and the filter plate for filtering impurities in the water are sequentially arranged inside the water inlet pipe according to the water flow direction, the flushing mechanism is arranged at the top of the water inlet pipe, and the working end of the flushing mechanism extends to the inside of the water inlet pipe and is located above the filter plate, the other end of the flushing mechanism is connected with the water outlet pipe through a connecting pipe, a feeding port is arranged at the bottom of the water inlet pipe, and the collecting box is arranged at the bottom of the water inlet pipe and is connected with the water inlet pipe through the feeding port.

[0008] Preferably, the floating object filtering mechanism comprises a sealing box, a filter screen, a lifting threaded rod and a fixing threaded rod, the bottom of the sealing box is provided with a taking-and-putting groove connected to the water inlet pipe and a first fixing hole, two first fixing holes are symmetrically distributed on both sides of the taking-and-putting groove, and the top of the sealing box is provided with a second fixing hole;

[0009] One end of the lifting threaded rod is fixedly connected to the top of the filter screen, and the other end of the lifting threaded rod passes through the taking and placing groove and the second fixing hole in sequence and is fastened to the top of the sealing box through a nut. One end of the two fixing threaded rods is fixedly connected to the top of the filter screen, and the other end of the fixing threaded rod passes through the first fixing hole and is fastened to the bottom of the inner cavity of the sealing box through a nut.

[0010] A positioning groove is arranged at the top of the inner cavity of the water inlet pipe, the filter mesh cooperates with the positioning groove and is located inside the water inlet pipe, and the filter mesh is arranged in parallel in front of the filter plate.

[0011] Preferably, a sealing cover is provided on one side of the sealing box, a rubber gasket is provided on the side of the sealing cover that matches the sealing box, and the sealing cover is fixedly connected to the sealing box by bolts.

[0012] Preferably, the filter screen is provided with an interception groove facing the direction of water flow, and the interception groove is located on the peripheral side of the filter screen.

[0013] Preferably, the flushing mechanism includes a nozzle and a four-way joint, a plurality of the nozzles are vertically evenly distributed on the top of the water inlet pipe, the working end of the nozzle faces the filter plate, and the water inlet end of the nozzle is connected to the water outlet pipe through the four-way joint and the connecting pipe.

[0014] Preferably, a valve for controlling the water flow is provided on the connecting pipe.

[0015] Preferably, the bottom of the collection box is connected to an end cover by bolts, and a rubber gasket is provided on one side of the end cover that matches the collection box.

[0016] Compared with the prior art, the beneficial technical effects of the utility model are:

[0017] 1) The flushing mechanism is set up to pump water with a certain pressure from the outlet pipe into the nozzle through the connecting pipe to flush the filter plate, so as to prevent larger impurities in the water from being retained on the filter plate and causing the filter plate to be blocked; at the same time, the impurities flushed down will sink into the collection box under the combined action of gravity and water flushing force, completing the collection of impurities;

[0018] 2) The interception groove is set to collect suspended impurities in the water, preventing the suspended impurities intercepted by the filter from entering the inner cavity of the submersible full-flow pump body through the water flow again, causing certain damage to the turbine blades;

[0019] 3) The setting of the collection box plays the role of collecting impurities that sink in the water. At the same time, an end cover is set at the bottom of the collection box to facilitate the user to clean the garbage in the collection box.

[0020] In general, the utility model has a reasonable layout, is easy to operate, has a good interception and cleaning effect, and can effectively filter impurities in the water while preventing the filter plate from being blocked, thereby ensuring the stable operation of the submersible full-flow pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of a water-lubricated bearing submersible full-flow pump of the utility model. Figure 1 ;

[0023] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the internal structure of the sealing box of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the filter screen of the utility model.

[0026] Explanation of the reference numerals: 1. Submersible full-flow pump body; 2. Water inlet pipe; 3. Water outlet pipe; 4. Floating object filtering mechanism; 41. Sealing box; 411. Pick-up and drop-out groove; 412. First fixing hole; 413. Second fixing hole; 42. Filter net; 421. Intercepting groove; 43. Lifting threaded rod; 44. Fixed threaded rod; 5. Filter plate; 6. Flushing mechanism; 61. Nozzle; 62. Four-way joint; 7. Collection box; 8. Connecting pipe; 9. Dropping port. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] like Figure 1-4As shown, a water-lubricated bearing submersible full-flow pump comprises a submersible full-flow pump body 1, an inlet pipe 2, an outlet pipe 3, a floating object filtering mechanism 4, a filter plate 5, a flushing mechanism 6 and a collecting box 7, wherein the inlet pipe 2 and the outlet pipe 3 are respectively installed at the inlet end and the outlet end of the submersible full-flow pump body 1, the floating object filtering mechanism 4 and the filter plate 5 for filtering impurities in the water are sequentially arranged inside the inlet pipe 2 according to the water flow direction, the flushing mechanism 6 is arranged at the top of the inlet pipe 2, and the working end of the flushing mechanism 6 extends to the inside of the inlet pipe 2 and is located above the filter plate 5, the other end of the flushing mechanism 6 is connected to the outlet pipe 3 through a connecting pipe 8, a drop opening 9 is provided at the bottom of the inlet pipe 2, and the collecting box 7 is arranged at the bottom of the inlet pipe 2 and is connected to the inlet pipe 2 through the drop opening 9.

[0029] Specifically, the floating object filtering mechanism 4 includes a sealing box 41, a filter screen 42, a lifting threaded rod 43 and a fixing threaded rod 44. The bottom of the sealing box 41 is provided with a taking-and-putting groove 411 and a first fixing hole 412 connected to the water inlet pipe 2. The two first fixing holes 412 are symmetrically distributed on both sides of the taking-and-putting groove 411. The top of the sealing box 41 is provided with a second fixing hole 413.

[0030] One end of the lifting threaded rod 43 is fixedly connected to the top of the filter screen 42, and the other end of the lifting threaded rod 43 passes through the pick-up and release groove 411 and the second fixing hole 413 in sequence and is fastened to the top of the sealing box 41 by a nut. One end of the two fixing threaded rods 44 are fixedly connected to the top of the filter screen 42, and the other end of the fixing threaded rod 44 passes through the first fixing hole 412 and is fastened to the bottom of the inner cavity of the sealing box 41 by a nut; specifically, a sealing rubber gasket matching the lifting threaded rod 43 is installed in the second fixing hole 413, which plays a role in ensuring the airtightness of the connection between the lifting threaded rod 43 and the second fixing hole 413.

[0031] A positioning groove is provided at the top of the inner cavity of the water inlet pipe 2 , and the filter screen 42 cooperates with the positioning groove and is located inside the water inlet pipe 2 . The filter screen 42 is arranged in parallel in front of the filter plate 5 .

[0032] Specifically, a sealing cover is disposed on one side of the sealing box 41 , a rubber gasket is disposed on the side of the sealing cover that matches the sealing box 41 , and the sealing cover is fixedly connected to the sealing box 41 by bolts.

[0033] Specifically, when cleaning the filter 42, the present device needs to first open the sealing cover of the sealing box 41, and then remove the nuts on the lifting threaded rod 43 and the fixed threaded rod 44, push the lifting threaded rod 43 downward, and after the fixed threaded rod 44 is disengaged from the first fixing hole 412, the filter 42 located in the water inlet pipe 2 is lifted along the taking and placing groove 411 to the inner cavity of the sealing box 41 for cleaning and washing by rotating 90° and pulling the lifting threaded rod 43; when replacing the filter 42, the water inlet pipe 2 can be disassembled to assist in replacement from the inner cavity of the water inlet pipe 2; specifically, the user can also set the top of the sealing box 41 as an openable sealing cover structure according to actual conditions, or set the connection relationship between the lifting threaded rod 43 and the filter 42 to a detachable threaded fastening structure, so as to facilitate the replacement operation of the filter 42.

[0034] Specifically, the filter screen 42 is provided with an interception groove 421 facing the direction of the water flow, and the interception groove 421 is located on the peripheral side of the filter screen 42. Specifically, the setting of the interception groove 421 plays a role in collecting suspended impurities in the water, and prevents the suspended impurities intercepted by the filter screen 42 from entering the inner cavity of the submersible full-throughflow pump body 1 through the water flow again, causing certain damage to the turbine blades.

[0035] Specifically, the flushing mechanism 6 includes a nozzle 61 and a four-way joint 62. A plurality of nozzles 61 are evenly distributed vertically on the top of the water inlet pipe 2. The working end of the nozzle 61 faces the filter plate 5. The water inlet end of the nozzle 61 is connected to the water outlet pipe 3 through the four-way joint 62 and the connecting pipe 8. Specifically, the nozzle 61 is provided to flush the filter plate 5, so as to prevent larger impurities in the water from being retained on the filter plate 5 and causing the filter plate 5 to be blocked; specifically, the impurities flushed down will sink into the collection box 7 under the combined action of gravity and the flushing force of the water flow.

[0036] Specifically, a valve for controlling the water flow is provided on the connecting pipe 8. Specifically, the setting of the valve plays a role in controlling the flushing water flow and strength of the nozzle 61, and the user can adjust it according to actual conditions; specifically, the setting of the connecting pipe 8 plays a role in transporting the water source required for the nozzle 61 to work, and the water flow with a certain pressure will enter the nozzle 61 from the water outlet pipe 3 through the connecting pipe 8 under the action of the connecting pipe 8.

[0037] Specifically, the bottom of the collection box 7 is connected with an end cover by bolts, and a rubber gasket is provided on one side of the end cover that matches the collection box 7. Specifically, by providing the end cover at the bottom of the collection box 7, it is convenient for the user to clean the garbage in the collection box 7.

[0038] The use principle of this utility model:

[0039] Under the action of the submersible full-flow pump body 1, the pumped water will pass through the water inlet pipe 2, the filter screen 42, the filter plate 5, the submersible full-flow pump body 1 and the water outlet pipe 3 in sequence, and in the process of water flow, the suspended impurities in the water will be intercepted by the filter screen 42, the heavier and non-floating impurities in the water will be intercepted by the filter plate 5, and the impurities intercepted by the filter plate 5 will sink into the collection box 7 for collection under the combined action of the scouring force of the water flow sprayed from the nozzle 61 and gravity, which can effectively prevent impurities in the water from entering the submersible full-flow pump body and causing certain damage to the turbine blades, thereby ensuring the stable operation of the submersible full-flow pump body.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] The embodiments described above are only descriptions of the preferred methods 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 fall within the protection scope determined by the claims of the present invention.

Claims

1. A water-lubricated bearing submersible full-flow pump, characterized in that: The invention comprises a submersible full-flow pump body (1), a water inlet pipe (2), a water outlet pipe (3), a floating object filtering mechanism (4), a filter plate (5), a flushing mechanism (6) and a collecting box (7); the water inlet pipe (2) and the water outlet pipe (3) are respectively installed at the water inlet end and the water outlet end of the submersible full-flow pump body (1); the floating object filtering mechanism (4) and the filter plate (5) for filtering impurities in water are sequentially arranged inside the water inlet pipe (2) according to the water flow direction; the flushing mechanism (6) is arranged at the top of the water inlet pipe (2); the working end of the flushing mechanism (6) extends to the inside of the water inlet pipe (2) and is located above the filter plate (5); the other end of the flushing mechanism (6) is connected to the water outlet pipe (3) through a connecting pipe (8); a material drop opening (9) is arranged at the bottom of the water inlet pipe (2); and the collecting box (7) is arranged at the bottom of the water inlet pipe (2) and is connected to the water inlet pipe (2) through the material drop opening (9).

2. A water-lubricated bearing submersible full-flow pump according to claim 1, characterized in that: The floating object filtering mechanism (4) comprises a sealing box (41), a filtering net (42), a lifting threaded rod (43) and a fixing threaded rod (44); the bottom of the sealing box (41) is provided with a taking-in and putting groove (411) connected to the water inlet pipe (2) and a first fixing hole (412); two first fixing holes (412) are symmetrically distributed on both sides of the taking-in and putting groove (411); and the top of the sealing box (41) is provided with a second fixing hole (413); One end of the lifting threaded rod (43) is fixedly connected to the top of the filter screen (42), and the other end of the lifting threaded rod (43) passes through the taking and placing groove (411) and the second fixing hole (413) in sequence and is then fastened to the top of the sealing box (41) by a nut; one end of the two fixing threaded rods (44) are both fixedly connected to the top of the filter screen (42), and the other end of the fixing threaded rod (44) passes through the first fixing hole (412) and is then fastened to the bottom of the inner cavity of the sealing box (41) by a nut; A positioning groove is provided at the top of the inner cavity of the water inlet pipe (2), the filter screen (42) cooperates with the positioning groove and is located inside the water inlet pipe (2), and the filter screen (42) is arranged in parallel in front of the filter plate (5).

3. A water-lubricated bearing submersible full-flow pump according to claim 2, characterized in that: A sealing cover is provided on one side of the sealing box (41), a rubber gasket is provided on the side of the sealing cover that matches the sealing box (41), and the sealing cover is fixedly connected to the sealing box (41) by bolts.

4. A water-lubricated bearing submersible full-flow pump according to claim 2, characterized in that: The filter screen (42) is provided with an interception groove (421) facing the direction of the water flow, and the interception groove (421) is located on the peripheral side of the filter screen (42).

5. A water-lubricated bearing submersible full-flow pump according to claim 1, characterized in that: The flushing mechanism (6) comprises a nozzle (61) and a four-way joint (62); a plurality of the nozzles (61) are vertically and evenly distributed on the top of the water inlet pipe (2); the working ends of the nozzles (61) face the filter plate (5); and the water inlet ends of the nozzles (61) are connected to the water outlet pipe (3) via the four-way joint (62) and the connecting pipe (8).

6. A water-lubricated bearing submersible full-flow pump according to claim 5, characterized in that: The connecting pipe (8) is provided with a valve for controlling the water flow.

7. A water-lubricated bearing submersible full-flow pump according to claim 1, characterized in that: The bottom of the collection box (7) is connected to an end cover via bolts, and a rubber gasket is provided on one side of the end cover that matches the collection box (7).

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