Submersible pump with double-impeller structure

Abstract

The utility model belongs to the technical field of submersible pumps, and particularly relates to a submersible pump with a double-impeller structure, which comprises a double-blade submersible pump, a base and a water outlet pipe, a water inlet device is arranged on the right side of the double-blade submersible pump and comprises an anti-blocking unit, a deslagging unit and a mounting unit, and the anti-blocking unit is arranged on the right side of the double-blade submersible pump. The deslagging unit is arranged on the right side of the double-blade submersible pump, and the mounting unit is arranged on the side face of the anti-blocking unit. According to the submersible pump of the double-impeller structure, the anti-blocking unit is arranged, and impurities in water are filtered through the filter screen, so that the situation that the impurities in the water collide with the impellers of the double-impeller submersible pump and damage the impellers is avoided, and meanwhile the situation that the impurities are accumulated in the water outlet pipe and block the water outlet pipe, and consequently the double-impeller submersible pump generates heat during operation is avoided; the problems that impurities in water can block a water outlet in the using process, the submersible pump continues to work at the moment, the submersible pump is heated, and the submersible pump is damaged in the background technology are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of submersible pumps, in particular to a submersible pump with a double impeller structure. Background Art

[0002] Submersible pumps are important equipment for deep well water extraction. When in use, the entire unit submerges in the water to extract groundwater to the surface for domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship load adjustment, and fountain landscape. Submersible pumps are single-suction multi-stage vertical centrifugal pumps. Multi-stage pumps have two or more impellers on the pump shaft. At this time, the total head of the pump is the sum of the heads generated by n impellers. Single-side water inlet pumps are also called single-suction pumps, which have only one water inlet on the impeller.

[0003] The impeller is the core component of the submersible pump and the main factor affecting the working efficiency. Under certain working conditions, if the impeller is not well designed, hydraulic loss and clearance loss will occur at the pump inlet and blades, reducing the working efficiency of the submersible pump. Existing submersible pump impellers generally have energy loss during operation, which reduces the head and flow of the pump, resulting in reduced working efficiency; the fixing strength between the impeller cover and the impeller body is low, which shortens the service life of the impeller.

[0004] For example, the impeller structure of a submersible pump disclosed in Chinese patent CN211314574U can guide water flow into the impeller and discharge it through the outlet by setting a guide shell, a guide cover, a guide strip, and a boss. The above structures can increase the water pressure and improve the working efficiency; 2. By setting limit holes and limit blocks, the submersible pump impeller structure is guaranteed to be stable, avoiding vibration when the centrifugal pump is working, and the possibility of loosening over time, thereby extending the life of the impeller.

[0005] However, when the device is in use, impurities in the water may clog the water outlet. At this time, the submersible pump continues to work, causing the submersible pump to heat up and cause damage to the submersible pump.

[0006] For this reason, we urgently need to provide a submersible pump with a double impeller structure. Utility Model Content

[0007] The utility model aims to provide a submersible pump with a double impeller structure to solve the problem in the background art that impurities in the water may block the water outlet during use, and the submersible pump continues to work, causing the submersible pump to heat up and cause damage to the submersible pump.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a submersible pump with a double-impeller structure, comprising a double-leaf submersible pump, a base, a water outlet pipe, a first impeller and a second impeller, the base being fixedly installed at the bottom of the double-leaf submersible pump, the water outlet pipe being connected to the top of the double-leaf submersible pump, a submersible motor being installed on the left side inside the double-leaf submersible pump, a water pump shaft being fixedly installed at the output end of the submersible motor, the first impeller being fixedly installed on the outside of the water pump shaft, the second impeller being fixedly installed on the outside of the water pump shaft and located on the right side of the first impeller, and a water inlet device being arranged on the right side of the double-leaf submersible pump.

[0009] The water inlet device includes an anti-blocking unit, a slag discharge unit and an installation unit. The anti-blocking unit is arranged on the right side of the double-leaf submersible pump, the slag discharge unit is arranged on the right side of the double-leaf submersible pump, and the installation unit is arranged on the side of the anti-blocking unit.

[0010] The anti-blocking unit includes a first shell, a second shell, a water inlet pipe, a filter, a fixing frame, a motor, a connecting rod and a scraper. The first shell is fixedly installed on the right side of the double-leaf submersible pump, the second shell is installed on the right side of the first shell, the water inlet pipe is connected to the right side of the second shell, the filter is installed inside the first shell, the fixing frame is fixedly installed inside the first shell on the left side of the filter, the motor is fixedly installed at one end of the fixing frame, the connecting rod is fixedly installed on the output end of the motor, and the scraper is fixedly installed on the outer surface of the connecting rod.

[0011] Preferably, the slag discharge unit comprises a slag discharge port, a sealing plug and a handle, the slag discharge port is fixedly installed at the bottom of the second shell, the sealing plug is installed inside the slag discharge port, and the handle is fixedly installed on a side of the sealing plug away from the slag discharge port.

[0012] Preferably, the installation unit includes a first connecting block, a second connecting block, a bolt and a nut, the first connecting block is fixedly installed at the front and rear ends of the first shell, the second connecting block is fixedly installed at the front and rear ends of the second shell, the bolt passes through the first connecting block and the second connecting block, and the nut is threadedly connected to the outer surface of the bolt.

[0013] Preferably, the connecting rod passes through the interior of the filter screen and extends to the right side of the filter screen, and the connecting rod and the filter screen are rotatably connected via a bearing to prevent the filter screen from hindering the rotation of the connecting rod.

[0014] Preferably, one side of the scraper is in contact with the surface of the filter screen, and the scraper rotates to scrape off impurities on the surface of the filter screen to avoid clogging of the filter screen.

[0015] Preferably, connection holes are provided inside the first connection block and the second connection block, and the bolts penetrate through the two connection holes and are connected with nuts, so that the connection and disassembly of the first shell and the second shell are facilitated by the bolts.

[0016] Preferably, the slag discharge port is inclined downward to facilitate the scraped impurities to be discharged from the slag discharge port.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The submersible pump with a double-impeller structure is provided with an anti-blocking unit, and the submersible motor is started to drive the water pump shaft to rotate, so that the first impeller and the second impeller rotate synchronously, so that water enters the double-leaf submersible pump from the water inlet pipe, is pressurized by the first impeller and the second impeller, and is sprayed out from the water outlet pipe. When water enters the double-leaf submersible pump, impurities in the water are filtered through the filter net, thereby preventing the impurities in the water from colliding with the impeller of the double-leaf submersible pump and causing damage to the impeller. At the same time, it is prevented that impurities accumulate in the water outlet pipe and block the water outlet pipe, causing the double-leaf submersible pump to heat up during operation and damage the double-leaf submersible pump. This solves the problem in the background technology that impurities in the water will block the water outlet during use, and the submersible pump continues to work at this time, causing the submersible pump to heat up and damage the submersible pump.

[0019] 2. The submersible pump with a double impeller structure is provided with a slag discharge unit. Impurities in the filtered water are accumulated in the slag discharge port. The sealing plug can be pulled out by pulling the handle, so that the impurities can be discharged from the slag discharge port, which is convenient for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0022] Figure 3 This is a disassembled diagram of the connection between the anti-blocking unit and the slag discharge unit of the utility model;

[0023] Figure 4 This is a structural breakdown diagram of the anti-blocking unit of the utility model;

[0024] Figure 5 The utility model is a schematic diagram of the structure of the connection between the first impeller and the second impeller in the double-blade submersible pump.

[0025] In the figure: 1. double-blade submersible pump; 2. base; 3. water outlet pipe; 401. first shell; 402. second shell; 403. water inlet pipe; 404. filter screen; 405. fixing bracket; 406. motor; 407. connecting rod; 408. scraper; 501. slag discharge port; 502. sealing plug; 503. handle; 601. first connecting block; 602. second connecting block; 603. bolt; 604. nut; 7. first impeller; 8. second impeller. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 5 , the utility model provides a technical solution: Example

[0028] A submersible pump with a double impeller structure comprises a double-leaf submersible pump 1, a base 2, a water outlet pipe 3, a first impeller 7 and a second impeller 8. The base 2 is fixedly installed at the bottom of the double-leaf submersible pump 1, the water outlet pipe 3 is connected to the top of the double-leaf submersible pump 1, a submersible motor is installed on the left side inside the double-leaf submersible pump 1, a water pump shaft is fixedly installed on the output end of the submersible motor, the first impeller 7 is fixedly installed on the outside of the water pump shaft, the second impeller 8 is fixedly installed on the outside of the water pump shaft and is located on the right side of the first impeller 7, and a water inlet device is arranged on the right side of the double-leaf submersible pump 1.

[0029] The water inlet device includes an anti-blocking unit, a slag discharge unit and an installation unit. The anti-blocking unit is arranged on the right side of the double-leaf submersible pump 1, the slag discharge unit is arranged on the right side of the double-leaf submersible pump 1, and the installation unit is arranged on the side of the anti-blocking unit.

[0030] The anti-blocking unit includes a first shell 401, a second shell 402, a water inlet pipe 403, a filter 404, a fixing frame 405, a motor 406, a connecting rod 407 and a scraper 408. The first shell 401 is fixedly installed on the right side of the double-leaf submersible pump 1, the second shell 402 is installed on the right side of the first shell 401, the water inlet pipe 403 is connected to the right side of the second shell 402, the filter 404 is installed inside the first shell 401, and the impurities in the water are filtered through the filter 404. The fixing frame 405 is fixedly installed inside the first shell 401 and is located on the left side of the filter 404. The motor 406 is fixed on the left and right sides, and the motor 406 is fixedly installed on one end of the fixing frame 405. The connecting rod 407 is fixedly installed on the output end of the motor 406. The connecting rod 407 passes through the inside of the filter 404 and extends to the right side of the filter 404. The connecting rod 407 and the filter 404 are rotatably connected through a bearing to prevent the filter 404 from hindering the rotation of the connecting rod 407. The scraper 408 is fixedly installed on the outer surface of the connecting rod 407, and one side of the scraper 408 is in contact with the surface of the filter 404. The scraper 408 rotates to scrape off impurities on the surface of the filter 404 to prevent the filter 404 from being blocked.

[0031] The mounting unit includes a first connecting block 601, a second connecting block 602, a bolt 603 and a nut 604. The first connecting block 601 is fixedly mounted at the front and rear ends of the first shell 401. Connecting holes are provided inside the first connecting block 601 and the second connecting block 602. The bolt 603 passes through the two connecting holes and is connected to the nut 604. The bolt 603 facilitates the connection and disassembly of the first shell 401 and the second shell 402. The second connecting block 602 is fixedly mounted at the front and rear ends of the second shell 402. The bolt 603 passes through the first connecting block 601 and the second connecting block 602. The nut 604 is threadedly connected to the outer surface of the bolt 603. Example

[0032] On the basis of Example 1: the slag discharge unit includes a slag discharge port 501, a sealing plug 502 and a handle 503. The slag discharge port 501 is fixedly installed at the bottom of the second shell 402. The slag discharge port 501 is inclined downward to facilitate the scraped impurities to be discharged from the slag discharge port 501. The sealing plug 502 is installed inside the slag discharge port 501, and the handle 503 is fixedly installed on the side of the sealing plug 502 away from the slag discharge port 501.

[0033] When in use, the double-leaf submersible pump 1 is started to draw liquid into the water inlet pipe 403 and let it flow out through the water outlet pipe 3. When the liquid flows into the double-leaf submersible pump 1, impurities in the internal liquid are filtered through the filter screen 404. At the same time, the motor 406 is started to drive the connecting rod 407 to rotate, so that the scraper 408 rotates to scrape off impurities attached to the surface of the filter screen 404 to avoid clogging of the filter screen 404 and speed up the flow of water. By filtering out impurities in the water, it is possible to prevent impurities in the water from colliding with the impeller in the double-leaf submersible pump 1, and at the same time prevent the outlet pipe 3 from being blocked, thereby increasing the service life of the double-leaf submersible pump 1.

[0034] 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. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A submersible pump with a double impeller structure, comprising a double impeller submersible pump (1), a base (2), a water outlet pipe (3), a first impeller (7) and a second impeller (8), wherein the base (2) is fixedly mounted on the bottom of the double impeller submersible pump (1), the water outlet pipe (3) is connected to the top of the double impeller submersible pump (1), a submersible motor is mounted on the left side inside the double impeller submersible pump (1), a water pump shaft is fixedly mounted on the output end of the submersible motor, the first impeller (7) is fixedly mounted on the outside of the water pump shaft, and the second impeller (8) is fixedly mounted on the outside of the water pump shaft and is located on the right side of the first impeller (7), characterized in that: A water inlet device is provided on the right side of the double-blade submersible pump (1); The water inlet device comprises an anti-blocking unit, a slag discharge unit and an installation unit, the anti-blocking unit is arranged on the right side of the double-blade submersible pump (1), the slag discharge unit is arranged on the right side of the double-blade submersible pump (1), and the installation unit is arranged on the side of the anti-blocking unit; The anti-blocking unit comprises a first shell (401), a second shell (402), a water inlet pipe (403), a filter (404), a fixing frame (405), a motor (406), a connecting rod (407) and a scraper (408); the first shell (401) is fixedly mounted on the right side of the double-blade submersible pump (1); the second shell (402) is mounted on the right side of the first shell (401); the water inlet pipe (403) is connected to the right side of the second shell (402); the filter (404) is mounted inside the first shell (401); the fixing frame (405) is fixedly mounted inside the first shell (401) and is located on the left side of the filter (404); the motor (406) is fixedly mounted on one end of the fixing frame (405); the connecting rod (407) is fixedly mounted on the output end of the motor (406); and the scraper (408) is fixedly mounted on the outer surface of the connecting rod (407).

2. A submersible pump with a double impeller structure according to claim 1, characterized in that: The slag discharge unit comprises a slag discharge port (501), a sealing plug (502) and a handle (503); the slag discharge port (501) is fixedly mounted on the bottom of the second shell (402); the sealing plug (502) is mounted inside the slag discharge port (501); and the handle (503) is fixedly mounted on a side of the sealing plug (502) away from the slag discharge port (501).

3. A submersible pump with a double impeller structure according to claim 1, characterized in that: The mounting unit comprises a first connecting block (601), a second connecting block (602), a bolt (603) and a nut (604); the first connecting block (601) is fixedly mounted at the front and rear ends of the first shell (401); the second connecting block (602) is fixedly mounted at the front and rear ends of the second shell (402); the bolt (603) passes through the first connecting block (601) and the second connecting block (602); and the nut (604) is threadedly connected to the outer surface of the bolt (603).

4. A submersible pump with a double impeller structure according to claim 1, characterized in that: The connecting rod (407) passes through the interior of the filter screen (404) and extends to the right side of the filter screen (404).

5. A submersible pump with a double impeller structure according to claim 1, characterized in that: One side of the scraper (408) is in contact with the surface of the filter screen (404).

6. A submersible pump with a double impeller structure according to claim 3, characterized in that: The first connecting block (601) and the second connecting block (602) are provided with connecting holes inside, and the bolts (603) pass through the two connecting holes and are connected to the nuts (604).

7. A submersible pump with a double impeller structure according to claim 2, characterized in that: The slag discharge port (501) is inclined downward.

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