Filter type submersible pump shell

Abstract

The utility model relates to a filtering type submersible pump shell which comprises a pump body, a water inlet pipeline, a first filtering part, a second filtering part, a third filtering part and a fourth filtering part, the water inlet pipeline is provided with a water inlet and an impeller, the impeller is arranged below the water inlet, the first filtering part is connected to the water inlet, the second filtering part covers the first filtering part, and the third filtering part covers the fourth filtering part. The first filter part is arranged above the second filter part and forms a first filter channel with the first filter part, the third filter part is arranged above the first filter part, the fourth filter part is arranged above the third filter part, and a second filter channel is formed among the fourth filter part, the third filter part and the first filter part. According to the submersible pump, by arranging the two filtering channels in different positions, multiple filtering on liquid in different areas is achieved, impurities are not prone to entering the pump shell of the submersible pump, the filtering effect is better, the water lifting efficiency of the submersible pump is effectively improved, and the impeller is protected.

Description

Technical Field

[0001] This application relates to the field of submersible pump technology, and in particular to a filter-type submersible pump casing. Background Technology

[0002] Submersible pumps are important equipment for deep well water extraction. Water is extracted through the impeller inside the submersible pump. In order to improve the water extraction efficiency and protect the internal components of the submersible pump, a filter screen is usually installed to filter impurities in the water during the water extraction process.

[0003] In existing technologies, a single-layer filter screen is usually set up to filter out impurities in the water. However, some impurities will still enter the submersible pump. Impurities can easily accumulate in the submersible pump and water delivery pipes, affecting water lifting efficiency. They may also get stuck on the impeller blades, causing the submersible pump to malfunction. Utility Model Content

[0004] This application provides a filter-type submersible pump housing with better filtration effect.

[0005] The technical solution for the pump casing of a filter-type submersible pump provided in this application is as follows:

[0006] A filter-type submersible pump casing includes a pump body, an inlet pipe, a first filter element, a second filter element, a third filter element, and a fourth filter element. The inlet pipe is coaxially arranged with the pump body, and the cross-sectional diameter of the inlet pipe is smaller than that of the pump body. The inlet pipe has an inlet and an impeller is provided below the inlet. The first filter element is connected to the inlet. The second filter element covers the first filter element and forms a first filtration channel with the first filter element. The third filter element is located above the first filter element. The fourth filter element is located above the third filter element and surrounds the outer periphery of the inlet channel, with a gap between them. A second filtration channel is formed between the fourth filter element, the third filter element, and the first filter element.

[0007] Preferably, the first filter element has a plurality of first filter holes, and the second filter element has a plurality of second filter holes, wherein the size of the first filter holes is smaller than the size of the second filter holes.

[0008] Preferably, the first filter hole has a first shape, the second filter hole has a second shape, and the first shape and the second shape are different.

[0009] Preferably, the third filter element has a plurality of third filter holes, and the fourth filter element has a plurality of fourth filter holes. The size of the third filter hole is smaller than the size of the fourth filter hole and larger than the size of the first filter hole.

[0010] Preferably, the third filter hole has a third shape, the fourth filter hole has a fourth shape, and the third shape and the fourth shape are different.

[0011] Preferably, the first filter element is a first hollow cylindrical structure, and a plurality of the first filter holes are distributed on the sidewall and bottom of the first hollow cylindrical structure, and the first filter element and the second filter element are separated by a gap along the height direction.

[0012] Preferably, the filter-type submersible pump casing further includes a support frame, which is connected to the third filter element and extends downward for contact with the ground;

[0013] The second filter element is a second hollow cylindrical structure, with multiple second filter holes distributed on the side wall and bottom of the second hollow cylindrical structure. The bottom of the second hollow cylindrical structure is higher than the bottom of the support frame.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. This application achieves filtration of liquids in different areas by setting two filter channels in different locations. The first filter channel performs double filtration of the liquid, and the second filter channel performs triple filtration of the liquid. Compared with the prior art, the filter-type submersible pump casing of this application can perform multiple filtrations of liquids in different locations, making it difficult for impurities to enter the submersible pump casing, resulting in better filtration effect, effectively improving the water lifting efficiency of the submersible pump and protecting the impeller.

[0016] 2. By setting first and second filter holes of different shapes, impurities of different shapes near the bottom of the submersible pump casing are filtered, further improving the filtration effect.

[0017] 3. By setting third and fourth filter holes of different shapes, impurities of different shapes near the pump body are filtered, further improving the filtration effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of this application.

[0019] Figure 2 This is a cross-sectional view of a preferred embodiment of this application.

[0020] Explanation of reference numerals in the attached drawings: 1. Pump body; 2. Inlet pipe; 21. Inlet; 3. Impeller; 4. First filter element; 41. First filter hole; 5. Second filter element; 51. Second filter hole; 6. Third filter element; 61. Third filter hole; 7. Fourth filter element; 71. Fourth filter hole; 8. Support frame; 81. Frame; 82. Base. Detailed Implementation

[0021] The present application will be further described in detail below with reference to the accompanying drawings.

[0022] This application provides a filter-type submersible pump casing, such as... Figure 1 and Figure 2 As shown, the system includes a pump body 1, an inlet pipe 2, a first filter element 4, a second filter element 5, a third filter element 6, and a fourth filter element 7. The inlet pipe 2 is coaxially arranged with the pump body 1, and the cross-sectional diameter of the inlet pipe 2 is smaller than that of the pump body 1. The inlet pipe 2 has an inlet 21 and an impeller 3 is provided below the inlet 21. The first filter element 4 is connected to the inlet 21. The second filter element 5 covers the first filter element 4 and forms a first filtration channel with the first filter element 4. The third filter element 6 is located above the first filter element 4. The fourth filter element 7 is located above the third filter element 6 and surrounds the outer periphery of the inlet channel, with a gap between them. A second filtration channel is formed between the fourth filter element 7, the third filter element 6, and the first filter element 4. A drive device is provided inside the pump body 1, and the drive device is connected to the impeller 3 to control the rotation of the impeller 3.

[0023] In use, the filter-type submersible pump casing of this application is placed in the water body to be pumped. The impeller 3 rotates, driving the liquid around the submersible pump casing. The liquid enters the inlet 21 through the first filter channel and the second filter channel respectively. Specifically, the liquid near the bottom of the filter-type submersible pump casing enters the inlet 21 through the double filtration of the second filter element 5 and the first filter element 4 in sequence, and the liquid near the pump body 1 enters the inlet 21 through the triple filtration of the fourth filter element 7, the third filter element 6 and the first filter element 4 in sequence.

[0024] Thus, the filter-type submersible pump casing of this application achieves filtration of liquids in different areas by setting two filtration channels in different positions. The first filtration channel performs double filtration of the liquid, and the second filtration channel performs triple filtration of the liquid. Compared with the prior art, the filter-type submersible pump casing of this application can perform multiple filtrations of liquids in different positions, making it difficult for impurities to enter the submersible pump casing, resulting in better filtration effect, effectively improving the water lifting efficiency of the submersible pump and protecting the impeller 3.

[0025] The first filter element 4 has multiple first filter holes 41, and the second filter element 5 has multiple second filter holes 51. The size of the first filter holes 41 is smaller than the size of the second filter holes 51. Specifically, the first filter element 4 is a first filter barrel, and the opening of the first filter barrel is coaxially arranged with the water inlet pipe 2. The barrel body of the first filter barrel has multiple first filter holes 41. The second filter element 5 is a second filter barrel, and the opening of the second filter barrel is coaxially arranged with the first filter barrel. The diameter of the opening of the second filter barrel is larger than the diameter of the opening of the first filter barrel. The second filter barrel covers the outer periphery of the first filter barrel, and the barrel body of the second filter barrel has multiple second filter holes. The first filter channel is specifically formed between the second filter holes and the first filter holes. The space is formed such that, by setting the diameter of the second filter hole to be larger than that of the first filter hole, the second filter element 5 first filters out larger impurities, and the first filter element 4 then filters out smaller impurities in the liquid from the second filter hole, so that the filter-type submersible pump housing of this application has a better filtration effect on the liquid near the bottom of the submersible pump housing; the first filter hole 41 has a first shape, and the second filter hole 51 has a second shape. The first shape and the second shape are different. Specifically, the first shape is circular and the second shape is rectangular. In this way, by setting the first filter hole 41 and the second filter hole 51 with different shapes, impurities of different shapes near the bottom of the submersible pump housing are filtered, and the filtration effect is further improved.

[0026] The third filter element 6 has multiple third filter holes 61, and the fourth filter element 7 has multiple fourth filter holes 71. The size of the third filter holes 61 is smaller than that of the fourth filter holes 71, but larger than that of the first filter holes 41. Specifically, the third filter element 6 is a third filter plate, and the center of the third filter plate has an opening. The opening is coaxially arranged with the water inlet pipe 2, and the water inlet pipe 2 passes through the opening. The openings of the first filter barrel and the second filter barrel are connected to the side of the third filter plate facing away from the pump body 1. The third filter plate has multiple third filter holes 61 arranged around it, and the multiple third filter holes 61 are located between the first filter barrel and the second filter barrel. The fourth filter element 7 is a fourth filter tube. One end of the fourth filter tube is connected to the pump body 1, and the other end is connected to the side of the third filter plate facing the pump body 1. The cross-sectional diameter of the pipe is larger than that of the inlet pipe 2. Multiple fourth filter holes 71 are distributed in the body of the fourth filter pipe. In this way, by setting the diameter of the fourth filter hole to be larger than that of the third filter hole, the fourth filter element 7 filters out larger impurities first, and the third filter element 6 filters out smaller impurities in the liquid from the fourth filter hole. This makes the filter submersible pump casing of this application have a better filtration effect on the liquid near the pump body 1. The third filter hole 61 is a third shape, and the fourth filter hole 71 is a fourth shape. The third shape and the fourth shape are different. Specifically, the third shape is circular and the fourth shape is rectangular. In this way, by setting the third filter hole 61 and the fourth filter hole 71 with different shapes, impurities of different shapes near the pump body 1 are filtered, and the filtration effect is further improved.

[0027] The first filter element 4 is a first hollow cylindrical structure, specifically a first filter barrel. Multiple first filter holes 41 are distributed on the side wall and bottom of the first hollow cylindrical structure. The first filter element 4 and the second filter element 5 are separated along the height direction, thereby increasing the filtration area and improving the filtration efficiency.

[0028] The submersible pump casing also includes a support frame 8, which is connected to the third filter element 6 and extends downward to contact the ground. The second filter element 5 is a second hollow cylindrical structure with multiple second filter holes 51 distributed on the sidewalls and bottom of the second hollow cylindrical structure. The bottom of the second hollow cylindrical structure is higher than the bottom of the support frame 8. Specifically, there are multiple support frames 8, which are evenly arranged around the outer periphery of the third filter element 6. The support frame 8 includes a frame body 81 and a base 82. One end of the frame body 81 is connected to the outer periphery of the third filter element 6, and the other end is connected to the base 82. The base 82 is used to contact the ground, so that a gap is formed between the bottom of the second filter element 5 and the ground, thereby increasing the filtration area of ​​the second filter element 5 and further improving the filtration efficiency.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A filter-type submersible pump casing, characterized in that: The system includes a pump body (1), an inlet pipe (2), a first filter element (4), a second filter element (5), a third filter element (6), and a fourth filter element (7). The inlet pipe (2) is coaxially arranged with the pump body (1). The cross-sectional diameter of the inlet pipe (2) is smaller than that of the pump body (1). The inlet pipe (2) has an inlet (21) and an impeller (3). The impeller (3) is located below the inlet (21). The first filter element (4) is connected to the inlet (21). The second filter element (5) covers the first filter element (4) and forms a first filtration channel with the first filter element (4). The third filter element (6) is located above the first filter element (4). The fourth filter element (7) is located above the third filter element (6) and surrounds the outer periphery of the inlet channel, with a gap between them. A second filtration channel is formed between the fourth filter element (7), the third filter element (6), and the first filter element (4).

2. The filter-type submersible pump casing according to claim 1, characterized in that: The first filter element (4) has a plurality of first filter holes (41), and the second filter element (5) has a plurality of second filter holes (51). The size of the first filter hole (41) is smaller than the size of the second filter hole (51).

3. The filter-type submersible pump casing according to claim 2, characterized in that: The first filter hole (41) has a first shape, and the second filter hole (51) has a second shape. The first shape and the second shape are different.

4. The filter-type submersible pump casing according to claim 2, characterized in that: The third filter element (6) has a plurality of third filter holes (61), and the fourth filter element (7) has a plurality of fourth filter holes (71). The size of the third filter hole (61) is smaller than the size of the fourth filter hole (71) and larger than the size of the first filter hole (41).

5. The filter-type submersible pump casing according to claim 4, characterized in that: The third filter hole (61) has a third shape, and the fourth filter hole (71) has a fourth shape. The third shape and the fourth shape are different.

6. The filter-type submersible pump casing according to claim 2, characterized in that: The first filter element (4) is a first hollow cylindrical structure, and a plurality of first filter holes (41) are distributed on the side wall and bottom of the first hollow cylindrical structure. The first filter element (4) and the second filter element (5) are separated by a gap along the height direction.

7. The filter-type submersible pump casing according to claim 2, characterized in that: The filter-type submersible pump casing also includes a support frame (8), which is connected to the third filter element (6) and extends downward for contact with the ground; The second filter element (5) is a second hollow cylindrical structure, and a plurality of second filter holes (51) are distributed on the side wall and bottom of the second hollow cylindrical structure. The bottom of the second hollow cylindrical structure is higher than the bottom of the support frame (8).

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