CN216691491U

CN216691491U - Dry submersible pump

Info

Publication number: CN216691491U
Application number: CN202220130976.0U
Authority: CN
Inventors: 杨性楷; 谢华; 李道芳; 杨毅
Original assignee: Taizhou Yimin Electric Machinery Co ltd
Current assignee: Taizhou Yimin Electric Machinery Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-06-07
Anticipated expiration: 2032-01-18

Abstract

The dry type submersible pump comprises a submersible motor, wherein the submersible motor is integrally arranged on a base, a water inlet joint is arranged on an upper end cover of the submersible motor, and a bottom cover is arranged on a lower end cover of the submersible motor; the water inlet joint is connected with a guide piece, the guide piece is connected with a hose connector, an impeller is installed at the tail end of a rotating shaft of the submersible motor, and the water inlet joint, the impeller, the guide piece and the hose connector are sequentially arranged; an oil isolation chamber is arranged on the end face of the upper end cover and is positioned in the inner cavity of the water inlet joint; a mechanical seal A is arranged between the rotating shaft and the oil separation chamber, and a mechanical seal B is arranged between the rotating shaft and the upper end cover; the shell and the cover of the submersible motor are thin-wall stamping parts, and the shell of the submersible motor is a stainless steel part; the structural parts of the bottom cover, the water inlet joint, the guide part and the hose connector are made of high-strength plastics. The dry type submersible pump provided by the utility model has the advantages of high overall efficiency, light weight, good corrosion resistance and reliable sealing.

Description

Dry submersible pump

Technical Field

The utility model relates to a submersible pump technology, in particular to a dry type submersible pump.

Background

The oil-filled submersible pump is the leading product of agricultural submersible pumps in China, is usually cast by all-metal materials, and has the following defects and shortcomings: the whole machine has low efficiency, and trace water enters a motor cavity through microcracks and capillary holes to lower the insulation of the motor due to the existence of microcracks and capillary holes in a casting material, so that an oil filling method is needed in the motor to slow down the reduction of the insulation performance of the motor and help a stator to dissipate heat, but the working efficiency of the motor is reduced by 8-10% after oil filling; the weight is heavy, the parts of the oil-filled submersible pump are cast parts, and the wall thickness of the cast parts has a lower limit, so that the reduction of the weight of the oil-filled pump has a plurality of limitations; the cast iron is not corrosion-resistant, and when the oil-filled pump conveys seawater, the cast iron has poor performance in seawater corrosion resistance, so that the water pump is scrapped too early; the environment-friendly performance is poor, parts of the oil-filled pump are machined by castings, and waste gas, dust and waste residue generated in the casting process are inevitable. In view of the above problems of the oil-filled submersible pump, it is necessary to provide a submersible pump with better performance.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides the dry type submersible pump which has the advantages of high overall efficiency, light weight, good corrosion resistance and reliable sealing.

The technical scheme of the utility model is as follows:

the dry type submersible pump comprises a submersible motor, wherein the submersible motor is integrally arranged on a base, a water inlet joint is arranged on an upper end cover of the submersible motor, and a bottom cover is arranged on a lower end cover of the submersible motor; the water inlet joint is connected with a guide piece, the guide piece is connected with a hose connector, an impeller is installed at the tail end of a rotating shaft of the submersible motor, and the water inlet joint, the impeller, the guide piece and the hose connector are sequentially arranged; an oil isolation chamber is arranged on the end face of the upper end cover and is positioned in the inner cavity of the water inlet joint; a mechanical seal A is arranged between the rotating shaft and the oil separation chamber, and a mechanical seal B is arranged between the rotating shaft and the upper end cover; the shell and the cover of the submersible motor are thin-wall stamping parts, and the shell of the submersible motor is a stainless steel part; the structural parts of the bottom cover, the water inlet joint, the guide part and the hose connector are made of high-strength plastics.

Compared with the prior art, the dry type submersible pump has the advantages of high overall efficiency, light weight, good corrosion resistance and reliable sealing, and is characterized in that: because the motor adopts a dry design, the motor does not need to be filled with oil, so that the working efficiency of the motor is improved; the shell and the cover of the submersible motor are both made of thin-wall stamping parts, and structural parts such as the bottom cover, the water inlet joint, the guide part and the hose connector are all made of high-strength plastic parts, so that the weight of the water pump is reduced on the premise of meeting the structural strength, and the submersible motor is convenient to carry; the casing of the whole pump is made of stainless steel and high-strength plastic materials, and other parts are wrapped in the stainless steel and the high-strength plastic materials, so that the corrosion resistance of the whole pump is good; the mechanical seal A and the mechanical seal B are independently installed in series, are independent from each other and do not interfere with each other, double sealing is realized, and sealing is reliable; in addition, the high-strength plastic adopted by the dry type submersible pump can be formed by plastic injection, the manufacturing process is green and environment-friendly, and the appearance is attractive.

Preferably, in the dry submersible pump, the guide includes a guide housing and a guide core, and the guide core is fixed in the guide housing. The guide core can guide water flow after being installed in the guide shell, so that the water flow can smoothly enter the hose through the hose connector. Furthermore, the guide piece shell and the guide piece core are in double connection by mechanical clamping and gluing. The mechanical screens and the sticky dual connection for the guide core installation is firm reliable more.

Preferably, in the dry submersible pump, the sealing structure between the parts of the water pump is an O-ring sealing structure. The O-shaped ring seal has a simple structure, and can reduce the production cost on the premise of ensuring the sealing effect.

Preferably, in the dry submersible pump, the outer surface of the hose connector is annularly provided with a protrusion, and the protrusion is in a sawtooth shape. The hose connector is the junction of water pump and hose, and the bellied setting of hose connector surface sawtooth pattern is convenient for the hose to insert the hose connector, and the sawtooth pattern arch can mesh at the internal surface of hose, makes the difficult drop of being connected between hose and the hose connector.

Preferably, in the dry submersible pump, a hydro-extracting cage is arranged outside the mechanical seal a. The hydro-extracting cage is provided with the hydro-extracting cage, so that the mechanical seal A can be prevented from being wound by waterweeds or floaters.

Preferably, in the dry submersible pump, the base is provided with a cable sealing seat and a cable steering chamber, and the cable steering chamber is provided with a cable fixing pressing plate. The arrangement of the cable sealing seat can prevent water from entering the motor cavity; the cable turns to room and the fixed clamp plate of cable and mutually supports, can adjust and fix the position of cable.

Preferably, in the dry submersible pump, flange flanges are arranged at two ends of a casing of the submersible motor, and an upper end cover and a lower end cover of the submersible motor are arranged in the flange flanges. The upper end cover and the lower end cover are arranged in the flanging flange, and the flanging flange can be fixed and covers the upper end cover and the lower end cover, so that the sealing performance of the submersible motor is enhanced.

Preferably, in the dry submersible pump, the oil isolation chamber is filled with oil. After the oil is filled in the oil isolation chamber, an isolation layer is formed, and water can be effectively prevented from entering an inner cavity of the submersible motor.

Drawings

FIG. 1 is a schematic diagram of the construction of a dry submersible pump of the present invention;

the symbols in the drawings are: 1-a submersible motor, 101-an upper end cover, 102-a lower end cover, 103-a rotating shaft, 104-a shell and 104A-a flanging flange; 2-base, 201-cable sealing seat, 202-cable turning room; 3-water inlet section; 4-bottom cover; 5-guide, 501-guide housing, 502-guide core; 6-hose connection; 7-an impeller; 8-oil isolation chamber; 9-mechanical seal A; 10-mechanical seal B; 11-hydro slinger; 12-cable fixing pressure plate.

Detailed Description

The utility model is further described in the following detailed description (including examples) with reference to the figures, but not to be construed as limiting the utility model.

Referring to fig. 1, the dry type submersible pump of the utility model comprises a submersible motor 1, wherein the submersible motor 1 is integrally installed on a base 2, a water inlet joint 3 is installed on an upper end cover 101 of the submersible motor 1, and a bottom cover 4 is installed on a lower end cover 102 of the submersible motor 1; the water inlet joint 3 is connected with a guide piece 5, the guide piece 5 is connected with a hose connector 6, an impeller 7 is installed at the tail end of a rotating shaft 103 of the submersible motor 1, and the water inlet joint 3, the impeller 7, the guide piece 5 and the hose connector 6 are sequentially arranged; an oil isolation chamber 8 is arranged on the end face of the upper end cover 101, and the oil isolation chamber 8 is positioned in the inner cavity of the water inlet joint 3; a mechanical seal A9 is arranged between the rotating shaft 103 and the oil separation chamber 8, and a mechanical seal B10 is arranged between the rotating shaft 103 and the upper end cover 101; the shell and the cover of the submersible motor 1 are thin-wall stamping parts, and the shell of the submersible motor 1 is a stainless steel part; the structural parts of the bottom cover 4, the water inlet joint 3, the guide 5 and the hose connector 6 are made of high-strength plastics.

When the dry submersible pump works, the impeller 7 arranged at the tail end of the rotating shaft 103 rotates, so that water flow enters from the water inlet of the water inlet joint 3, then, under the action of the impeller 7, the water flow flows from the water inlet joint 3 to the guide piece 5, and flows into the hose through the hose connector 6 under the guide of the guide piece 5; in the working process of the dry type submersible pump, the oil separation chamber 8, the mechanical seal A9 and the mechanical seal B10 are matched with each other, so that water flow in the water inlet joint 3 can be prevented from entering an inner cavity of the submersible motor 1, and the sealing effect is achieved; the housing of the submersible motor 1 is a stainless steel part, structural parts such as the bottom cover 4, the water inlet joint 3, the guide part 5 and the hose connector 6 are high-strength plastic parts, and other parts of the water pump are wrapped in the stainless steel and the high-strength plastic in the working process.

As a specific embodiment of the present invention, see fig. 1:

in this embodiment, the guide 5 includes a guide housing 501 and a guide core 502, and the guide core 502 is fixed in the guide housing 501. The guide core 502, when installed in the guide housing 501, can guide the flow of water so that the flow of water can smoothly enter the hose through the hose port 6. Further, the guide shell 501 and the guide core 502 are connected by a mechanical clamping and gluing. The double connection of mechanical detents and glue allows for a more secure and reliable installation of the guide core 502.

In this embodiment, the sealing structure between the parts of the water pump is an O-ring sealing structure. The O-shaped ring seal has a simple structure, and can reduce the production cost on the premise of ensuring the sealing effect.

In this embodiment, the outer surface of the hose connector 6 is annularly provided with a protrusion, and the shape of the protrusion is a sawtooth type. The hose connector 6 is the junction of water pump and hose, and the protruding setting of 6 surface sawtooth pattern of hose connector is convenient for the hose to insert hose connector 6, and the sawtooth pattern is protruding can mesh at the internal surface of hose, makes the difficult drop of being connected between hose and the hose connector 6.

In this embodiment, a hydro-extracting cage 11 is provided outside the mechanical seal a 9. The hydro-extracting cage 11 can prevent the mechanical seal A9 from being wound by aquatic weeds or floating objects.

In this embodiment, the base 2 is provided with a cable sealing seat 201 and a cable turning chamber 202, and the cable turning chamber 202 is provided with a cable fixing pressing plate 12. The arrangement of the cable sealing seat 201 can prevent water from entering a motor cavity; the cable deflecting chamber 202 and the cable fixing pressing plate 12 are matched with each other, so that the position of the cable can be adjusted and fixed.

In this embodiment, both ends of the housing 104 of the submersible motor 1 are provided with flange flanges 104A, and the upper end cover 101 and the lower end cover 102 of the submersible motor 1 are installed in the flange flanges 104A. The upper end cover 101 and the lower end cover 102 are installed in the flange 104A, and the flange 104A can fix and cover the upper end cover 101 and the lower end cover 102, thereby enhancing the sealing performance of the submersible motor 1.

In this embodiment, the interior of the oil isolation chamber 8 is filled with oil. After the oil is filled in the oil isolation chamber 8, an isolation layer is formed, and water can be effectively prevented from entering the inner cavity of the submersible motor 1.

The above general description of the utility model and the description of its specific embodiments in this application should not be construed as limiting the scope of the utility model. Those skilled in the art can add, reduce or combine the technical features disclosed in the general description and/or the specific embodiments (including the examples) to form other technical solutions within the scope of the present application according to the disclosure of the present application without departing from the components of the present invention.

Claims

1. Dry-type immersible pump, its characterized in that: the submersible motor comprises a submersible motor (1), wherein the submersible motor (1) is integrally arranged on a base (2), a water inlet joint (3) is arranged on an upper end cover (101) of the submersible motor (1), and a bottom cover (4) is arranged on a lower end cover (102) of the submersible motor (1); the water inlet joint (3) is connected with the guide piece (5), the guide piece (5) is connected with the hose connector (6), the tail end of a rotating shaft (103) of the submersible motor (1) is provided with an impeller (7), and the water inlet joint (3), the impeller (7), the guide piece (5) and the hose connector (6) are sequentially arranged; an oil isolation chamber (8) is arranged on the end face of the upper end cover (101), and the oil isolation chamber (8) is positioned in the inner cavity of the water inlet joint (3); a mechanical seal A (9) is arranged between the rotating shaft (103) and the oil separation chamber (8), and a mechanical seal B (10) is arranged between the rotating shaft (103) and the upper end cover (101); the shell and the cover of the submersible motor (1) are thin-wall stamping parts, and the shell of the submersible motor (1) is a stainless steel part; the structural parts of the bottom cover (4), the water inlet joint (3), the guide piece (5) and the hose connector (6) are made of high-strength plastics.

2. The dry submersible pump of claim 1, wherein: the guide (5) comprises a guide housing (501) and a guide core (502), wherein the guide core (502) is fixed in the guide housing (501).

3. The dry submersible pump of claim 2, wherein: the guide piece shell (501) and the guide piece core (502) are connected in a double mode of mechanical clamping and gluing.

4. The dry submersible pump of claim 1, wherein: the sealing structure between each part of the water pump is an O-shaped ring sealing structure.

5. The dry submersible pump of claim 1, wherein: the outer surface of the hose connector (6) is annularly provided with a bulge, and the bulge is in a sawtooth shape.

6. The dry submersible pump of claim 1, wherein: and a water thrower (11) is arranged on the outer side of the mechanical seal A (9).

7. The dry submersible pump of claim 1, wherein: the cable steering device is characterized in that a cable sealing seat (201) and a cable steering chamber (202) are arranged in the base (2), and a cable fixing pressing plate (12) is arranged on the cable steering chamber (202).

8. The dry submersible pump of claim 1, wherein: both ends of a shell (104) of the submersible motor (1) are provided with flange flanges (104A), and an upper end cover (101) and a lower end cover (102) of the submersible motor (1) are arranged in the flange flanges (104A).

9. The dry submersible pump of claim 1, wherein: the oil isolation chamber (8) is filled with oil.