Shaftless water pump

Abstract

The shaftless water pump comprises a shell, the upper portion of the shell is fixedly connected with a water outlet, and the lower portion of the shell is fixedly connected with a supporting column; the device comprises a shell, a rotating assembly is arranged in the shell in a sleeved mode, a spiral impeller is fixedly connected into the rotating assembly, an electromagnetic coil is fixedly connected into the rotating assembly, and sealing outer rings are arranged on the outer sides of the upper end and the lower end of the rotating assembly. A magnetic fluid sealing ring A is arranged in the sealing outer ring and the groove A of the rotating assembly, and a magnetic fluid sealing ring B is arranged in the sealing outer ring and the groove A of the rotating assembly; the magnetic fluid rotary seal is formed by arranging the magnetic fluid sealing ring A and the magnetic fluid sealing ring B, the labyrinth rotary seal is formed by arranging the array groove D and the array protruding plate in a matched mode, and the problems that a shaftless water pump is complex in sealing and poor in sealing performance are solved through the magnetic fluid rotary seal and labyrinth rotary seal multi-layer rotary seal mode.

Description

Technical Field

[0001] The present invention relates to the technical field of water pumps, and more particularly to a shaftless water pump. Background Art

[0002] Coal mine pumps are a common type of equipment in mines. Their principle is to use the mechanical movement of the pump to transport liquid or gas from a low-pressure area to a high-pressure area, thereby achieving the transportation and discharge of water, mud, oil and other substances in coal mines. The working principle of coal mine pumps involves multiple fields such as fluid mechanics and mechanical engineering.

[0003] First of all, the working principle of the coal mine pump can be summarized as the pressure difference principle. When the pump is started, a low-pressure area is formed inside the pump, and the liquid or gas is sucked into the pump; then, a high-pressure area is formed inside the pump, and the liquid or gas is discharged from the pump. This process is achieved through the mechanical movement of the pump, usually through the rotation or reciprocating motion of components such as the impeller, plunger, and screw.

[0004] Secondly, coal mine pumps also involve the principle of liquid or gas transportation. In coal mines, pumps are usually used to transport water, mud, oil and other substances. During the working process of the pump, these substances are sucked into the pump, and after the mechanical action of the pump, they are discharged out of the pump, realizing the functions of transportation and discharge. This process needs to consider factors such as the properties, viscosity, and density of the fluid to ensure the normal operation and transportation effect of the pump.

[0005] In addition, the working principle of coal mine pumps is also related to the structure and working environment of the pump. The structure of the pump includes the pump body, impeller, shaft, seal and other parts. Their design and assembly have an important impact on the working effect and life of the pump. The working environment of coal mines is usually harsh, and the pump needs to be able to adapt to high temperature, high pressure, corrosion and other conditions. Therefore, the material selection and manufacturing process of the pump are also important factors affecting the working principle of the pump.

[0006] In general, the working principle of coal mine pumps is based on fluid mechanics and mechanical movement. Through the mechanical action of the pump, the liquid or gas is transported and discharged. In practical applications, it is necessary to comprehensively consider the pressure difference principle of the pump, the liquid or gas transportation principle, as well as the pump structure and working environment to ensure the normal operation and transportation effect of the pump.

[0007] After searching, the Chinese patent No. CN202010926950.2 discloses a shaftless submersible axial-flow electric pump comprising: a water inlet section, a submersible motor section and a body guide section; the lower end of the submersible motor section is connected to the water inlet section by fastening bolts, and the upper end of the submersible motor section is connected to the body guide section by fastening bolts; the body guide section comprises a body guide and guide blades, the body guide is a frustum-shaped cylinder, and guide blades cast integrally with the frustum-shaped cylinder of the body guide are arranged on the inner wall of the frustum-shaped cylinder; the water inlet section at the bottom of the pump is a trumpet-shaped cylinder.

[0008] 1. In the existing shaft water pump, the electric energy drives the motor, the motor converts and drives the central shaft, the central shaft drives the impeller, and the impeller pumps water to the corresponding place. The technical problem is that too much energy is consumed in the conversion process;

[0009] 2. In the existing technology, the existing shaftless water pump has the problems of complex sealing and poor sealing performance;

[0010] 3. In the prior art, the water pump has the problem that the water pump impeller is easily entangled by large particles or debris in the water, causing the water pump impeller to get stuck and damage the motor. Summary of the invention

[0011] 1. Technical issues to be resolved

[0012] In view of the problems existing in the prior art, the present invention provides a shaftless water pump to solve the technical problems mentioned in the background technology that the existing water pump has the problem that electric energy drives the motor, the motor converts and drives the central shaft, the central shaft drives the impeller, the impeller pumps water to the corresponding place, and excessive energy is consumed in the conversion process; the sealing is complex and the sealing performance is poor.

[0013] (II) Technical solution

[0014] To achieve the above object, the present invention provides the following technical solution: a shaftless water pump, comprising: a housing, the upper part of the housing is fixedly connected with a water outlet, and the lower part of the housing is fixedly connected with a support column;

[0015] A rotating assembly is sleeved in the shell, a spiral impeller is fixedly connected inside the rotating assembly, an electromagnetic coil is fixedly connected inside the rotating assembly, a brush piece A is fixedly connected to one side of the electromagnetic coil, a groove A is provided on the outer side of the upper and lower ends of the rotating assembly, a groove B is provided on the upper and lower ends of the rotating assembly, a groove C is provided on the inner side of the upper and lower ends of the rotating assembly, and an array groove D is provided on the inner side of the upper and lower ends of the rotating assembly; a sealing outer ring is provided on the outer side of the upper and lower ends of the rotating assembly, a magnetic fluid sealing ring A is provided in the groove A of the sealing outer ring and the rotating assembly, and a magnetic fluid sealing ring B is provided in the groove A of the sealing outer ring and the rotating assembly; a sealing inner ring is provided on the inner side of the upper and lower ends of the rotating assembly, a display convex plate is provided at one end of the sealing inner ring, a convex block is provided above the display convex plate, and the convex block is provided in the groove C;

[0016] The sealing outer ring is fixed to the sealing inner ring by bolts. After the sealing outer ring is connected to the sealing inner ring, a groove is provided at the upper end, and a convex sealing ring is provided above the groove.

[0017] The present invention is further configured such that the sealing inner ring is configured in sections.

[0018] The present invention is further configured such that a non-impact check valve is mounted inside the water outlet; and water inlets are provided around the support column.

[0019] The present invention is further configured such that a strong magnet is provided inside the shell, and a brush piece B is provided at one end of the strong magnet; the brush piece B is divided into two positive and negative pieces and is connected to the outlet box through a linear connection lead line, and the brush piece A is in contact with the brush piece B in set.

[0020] The present invention is further configured such that the spiral impeller is spiral-shaped as a whole, and is divided into a single spiral, a double spiral, or a multi-spiral; the shape of the spiral impeller is divided into an equal pitch impeller and a variable pitch impeller; the cross-sectional shape of the spiral impeller is divided into a rectangular cross-sectional shape and a trapezoidal cross-sectional shape.

[0021] The present invention is further configured such that the support column can be replaced by a pipe of the same size, and a reamer is installed at the underwater end of the pipe.

[0022] The present invention is further configured such that a reamer is mounted inside the support column.

[0023] Principle of assembling the rotating assembly:

[0024] First, the groove A and the groove B of the rotating component are respectively provided with a magnetic fluid sealing ring A and a magnetic fluid sealing ring B to form a magnetic fluid rotating seal;

[0025] Secondly, the sealing inner ring is divided into multiple sections, and the display convex plates of the sealing inner ring are sleeved in the array grooves D to form a labyrinth rotary seal;

[0026] Again, the protrusion of the sealing inner ring is sleeved in the groove C;

[0027] Then, the sealing outer ring and the sealing inner ring are fixed with bolts to form a multi-layer rotary sealing method;

[0028] Then, convex sealing rings are arranged in the grooves at the upper ends of the sealing outer ring and the sealing inner ring;

[0029] Finally, the convex sealing ring is glued and then the water outlet and support column are installed to fix the connection.

[0030] (III) Beneficial effects

[0031] Compared with the prior art, the present invention provides a shaftless water pump, which has the following beneficial effects:

[0032] 1. By fixing the spiral impeller to the inside of the rotating component, the interior of the rotating component is hollow to form a shaftless spiral impeller; the shaftless spiral impeller converts energy through the strong magnetic induction of the external electromagnetic coil and the outer shell, converting electrical energy into magnetic energy, and converting magnetic energy into mechanical energy to drive the liquid in the shaftless spiral impeller to be thrown out under the action of centrifugal force, forming a high-speed rotating liquid flow, reducing the mechanical energy conversion of the central axis during the energy conversion process, and solving the technical problem of excessive energy consumption during the conversion process.

[0033] 2. A magnetic fluid rotary seal is formed by arranging a magnetic fluid sealing ring A and a magnetic fluid sealing ring B, and a labyrinth rotary seal is formed by arranging an array groove D and cooperating with an array convex plate. The problems of complex sealing and poor sealing performance of shaftless water pumps are solved by using a multi-layer rotary seal method of magnetic fluid rotary seal and labyrinth rotary seal.

[0034] 3. Opening a water inlet can solve the problem of large particles or debris entering the water pump and causing damage to the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of a shaftless water pump in the present invention;

[0036] Figure 2 It is a cross-sectional view of the overall structure of a shaftless water pump in the present invention;

[0037] Figure 3 It is a structural schematic diagram of the rotating assembly in the present invention;

[0038] Figure 4 It is a structural cross-sectional view of the rotating assembly in the present invention;

[0039] Figure 5 This is one of the structural schematic diagrams of the sealing assembly in the present invention;

[0040] Figure 6 This is one of the structural schematic diagrams of the sealing assembly in the present invention;

[0041] Figure 7 It is a structural cross-sectional view of the housing in the present invention;

[0042] Figure 8 It is a structural explosion diagram of the sealing component in the present invention.

[0043] In the figure: 1. shell; 101. outlet box; 102. power cord; 103. strong magnet; 104. brush piece B; 2. support column; 201. water inlet; 3. water outlet; 4. rotating component; 401. spiral impeller; 402. electromagnetic coil; 403. brush piece A; 404. sealing component; 4041. sealing outer ring; 4042. magnetic fluid sealing ring A; 4043. magnetic fluid sealing ring B; 4044. sealing inner ring; 4045. bolt; 4046. sealing ring; 4047. display convex plate; 405. groove A; 406. groove B; 407. groove C; 408. array groove D. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0046] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0047] Implementation column 1:

[0048] See also Figure 1-8 , a shaftless water pump, comprising: a housing 1, a water outlet 3 is fixedly connected to the upper part of the housing 1, and a support column 2 is fixedly connected to the lower part of the housing 1;

[0049] The housing 1 is provided with a rotating assembly 4, a spiral impeller 401 is fixedly connected to the interior of the rotating assembly 4, an electromagnetic coil 402 is fixedly connected to the interior of the rotating assembly 4, a brush piece A403 is fixedly connected to one side of the electromagnetic coil 402, a groove A405 is provided on the outer side of the upper and lower ends of the rotating assembly 4, a groove B406 is provided on the upper and lower ends of the rotating assembly 4, a groove C407 is provided on the inner side of the upper and lower ends of the rotating assembly 4, and an array groove D408 is provided on the inner side of the upper and lower ends of the rotating assembly 4; a sealing outer ring 4041 is provided on the outer side of the upper and lower ends of the rotating assembly 4, and the sealing outer ring 4041 is connected to the rotating assembly A magnetic fluid sealing ring A4042 is arranged in the groove A405 of the component 4, and a magnetic fluid sealing ring B4043 is arranged in the groove A405 of the sealing outer ring 4041 and the rotating component 4; a sealing inner ring 4044 is arranged on the inner side of the upper and lower ends of the rotating component 4, and a display convex plate 4047 is arranged at one end of the sealing inner ring 4044, and a convex block is arranged above the display convex plate 4047, and the convex block is arranged in the groove C407; a magnetic fluid rotary seal is formed by arranging the magnetic fluid sealing ring A4042 and the magnetic fluid sealing ring B4043, and a labyrinth rotary seal is formed by arranging the array groove D408 and the display convex plate 4047 to cooperate with each other;

[0050] The sealing outer ring 4041 and the sealing inner ring 4044 are fixed by bolts 4045. After the sealing outer ring 4041 and the sealing inner ring 4044 are connected, a groove is opened at the upper end, and a convex sealing ring 4046 is provided above the groove.

[0051] The sealing inner ring 4044 is configured to be segmented; by configuring the sealing inner ring 4044 to be segmented, it is easier for assemblers to assemble.

[0052] The water outlet 3 is internally provided with a non-impact check valve, which effectively reduces the water hammer problem during water delivery at high altitudes; the support column 2 is surrounded by a water inlet 201, which effectively prevents large particles or debris from entering the water pump and causing damage to the motor.

[0053] A strong magnet 103 is provided inside the housing 1, and a brush piece B104 is provided at one end of the strong magnet 103; the brush piece B104 is divided into positive and negative ones and is led into the outlet box 101 through a linear connection line, and is connected to an external power line 102 through the outlet box 101; the brush piece A403 is in contact with the brush piece B104; the electromagnetic coil 402 of the rotating component 4 is powered to rotate through the contact between the brush piece B104 and the brush piece A403.

[0054] The support column 2 is internally provided with a reamer, and the reamer is installed to stir the mud or large particles in the water, so as to facilitate the entry into the spiral impeller 401 .

[0055] Implementation column 2:

[0056] In the above, the support column 2 is replaced by a pipe of the same size and fixedly connected to the housing 1 so that it can be used as a horizontal water pump on the ground; a reamer is installed at the underwater end of the pipe, and the mud or large particles in the water are stirred by installing the reamer to facilitate their entry into the pipe.

[0057] Principle of assembling the rotating assembly 4:

[0058] First, the groove A405 and the groove B406 of the rotating component 4 are respectively provided with a magnetic fluid sealing ring A4042 and a magnetic fluid sealing ring B4043 to form a magnetic fluid rotating seal;

[0059] Secondly, the sealing inner ring 4044 is divided into multiple sections, and the display convex plate 4047 of the sealing inner ring 4044 is set in the array groove D408 to form a labyrinth rotary seal;

[0060] Again, the protrusion of the sealing inner ring 4044 is sleeved in the groove C407;

[0061] Then, the sealing outer ring 4041 and the sealing inner ring 4044 are fixed by bolts 4045 to form a multi-layer rotary sealing method;

[0062] Then, a convex sealing ring 4046 is provided in the grooves at the upper ends of the sealing outer ring 4041 and the sealing inner ring 4044;

[0063] Finally, the convex sealing ring 4046 is glued and then the water outlet 3 and the support column 2 are installed to fix the connection.

[0064] Working principle:

[0065] After the shaftless water pump is transported to the work site, the power line 102 is connected, and after the power is turned on, the rotating component 4 starts to work, and the spiral impeller 401 starts to pump water upward until the water is pumped to the corresponding place.

[0066] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A shaftless water pump, comprising: The housing (1) is characterized in that: a water outlet (3) is fixedly connected to the upper part of the housing (1), and a support column (2) is fixedly connected to the lower part of the housing (1); The housing (1) is provided with a rotating assembly (4), the interior of the rotating assembly (4) is fixedly connected with a spiral impeller (401), the interior of the rotating assembly (4) is fixedly connected with an electromagnetic coil (402), one side of the electromagnetic coil (402) is fixedly connected with a brush sheet A (403), the upper and lower ends of the rotating assembly (4) are provided with grooves A (405) on the outer sides, the upper and lower ends of the rotating assembly (4) are provided with grooves B (406), the upper and lower ends of the rotating assembly (4) are provided with grooves C (407) on the inner sides, and the upper and lower ends of the rotating assembly (4) are provided with array grooves D (408) on the inner sides. ); a sealing outer ring (4041) is provided on the outer sides of the upper and lower ends of the rotating component (4); a magnetic fluid sealing ring A (4042) is provided in the sealing outer ring (4041) and the groove A (405) of the rotating component (4); a magnetic fluid sealing ring B (4043) is provided in the sealing outer ring (4041) and the groove A (405) of the rotating component (4); a sealing inner ring (4044) is provided on the inner sides of the upper and lower ends of the rotating component (4); a display convex plate (4047) is provided at one end of the sealing inner ring (4044); a convex block is provided above the display convex plate (4047), and the convex block is provided in the groove C (407); The sealing outer ring (4041) and the sealing inner ring (4044) are fixed by bolts (4045). After the sealing outer ring (4041) and the sealing inner ring (4044) are connected, a groove is opened at the upper end, and a convex sealing ring (4046) is provided above the groove.

2. A shaftless water pump according to claim 1, characterized in that: The sealing inner ring (4044) is configured to be segmented.

3. A shaftless water pump according to claim 1, characterized in that: A non-impact check valve is mounted inside the water outlet (3); and water inlets (201) are provided around the support column (2).

4. A shaftless water pump according to claim 1, characterized in that: A strong magnet (103) is provided inside the housing (1), and a brush piece B (104) is provided at one end of the strong magnet (103); the brush piece B (104) is divided into two, positive and negative, and is connected to the outlet box (101) through a linear connection line, and is connected to an external power line (102) through the outlet box (101); the brush piece A (403) is in contact with the brush piece B (104) in a package.

5. The shaftless water pump according to claim 1, characterized in that: The spiral impeller (401) is spiral-shaped as a whole.

6. A shaftless water pump according to claim 5, characterized in that: The shape of the spiral impeller (401) is divided into a constant pitch impeller and a variable pitch impeller; the cross-sectional shape of the spiral impeller (401) is divided into a rectangular cross-sectional shape and a trapezoidal cross-sectional shape.

7. A shaftless water pump according to claim 5, characterized in that: The spiral impeller (401) is divided into a single spiral, a double spiral, or a multi-spiral.

8. A shaftless water pump according to claim 5, characterized in that: The support column (2) can be replaced by a pipe of the same size, and a reamer is installed at the underwater end of the pipe.

9. A shaftless water pump according to claim 5, characterized in that: A reamer is mounted inside the support column (2).

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