Novel tubular pump structure

Abstract

The utility model relates to a novel tubular pump structure which comprises a flow guide shell, a flow guide blade, a guide bearing seat, a water guide bearing, an adjusting gasket, axial anti-collision magnetic steel on the stator side, a motor shell and a motor stator. An outer magnetic rotor body and an inner magnetic rotor body; a certain gap exists between the mounting positions of the outer magnetic rotor body and the inner magnetic rotor body; the outer magnetic rotor body comprises axial anti-collision magnetic steel, an outer magnetic base body, an outer wrapping sleeve, outer magnetic steel, blades and a motor rotor, the outer magnetic steel is embedded in a groove in the outer magnetic base body, the outer wrapping sleeve is fixed to the outer magnetic base body, and the whole outer magnetic rotor body does synchronous rotating motion in the working process; the inner magnetic rotor body comprises an inner magnetic base body, inner magnetic steel, an outer packaging sleeve, a key, a shaft sleeve and a shaft, and the inner magnetic steel is embedded in a groove of the inner magnetic base body and is welded and packaged through the inner packaging sleeve. According to the utility model, a transmission mode of magnetic coupling characteristics is utilized, two quick-wear parts, namely a bearing and a mechanical seal, are omitted, and the maintenance and replacement cost of equipment can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to a tubular pump structure, in particular to a novel tubular pump structure which utilizes magnetic coupling characteristics for transmission, replaces a combined transmission mode of bearings and mechanical seals commonly used in traditional structures, and can effectively reduce maintenance costs and replacement costs. Background Art

[0002] There are many large-flow, low-lift pump stations in some riverside and coastal areas in my country. These pump stations need to divert water in a timely manner during the dry season and drain water in a timely manner during the flood season. Therefore, a through-flow pump with a pumping and drainage function is usually selected. In the traditional structure, the motor rotor and the shaft often use a bearing plus a mechanical seal transmission form, but this structure has obvious shortcomings during operation:

[0003] 1. The bearing will become eccentric and stuck due to the long-term wear of the ball, which will affect the transmission efficiency;

[0004] 2. The hard friction between the mechanical seal dynamic ring and the fixed pair will cause the sealing gap to increase. This gap will not only increase the axial momentum of the rotor and collide with the guide housing, but also cause the circulating coolant (oil / grease) in the mechanical seal and bearing to leak, thereby reducing the cooling effect;

[0005] The wear of bearings and seals requires regular disassembly and replacement, which greatly increases maintenance and replacement costs. Utility Model Content

[0006] In view of the above problems, the main purpose of the utility model is to provide a new type of cross-flow pump structure which utilizes magnetic coupling characteristics for transmission, replaces the combined transmission mode of bearings and mechanical seals commonly used in traditional structures, and can effectively reduce maintenance costs and replacement costs.

[0007] The utility model solves the above technical problems through the following technical solutions: a new type of cross-flow pump structure, which includes: a guide shell, guide blades, a guide bearing seat, a water guide bearing, an adjustment gasket, an axial anti-collision magnetic steel on the stator side, a motor shell, a motor stator, an outer magnetic rotor body, and an inner magnetic rotor body; there is a certain gap between the installation positions of the outer magnetic rotor body and the inner magnetic rotor body.

[0008] The external magnetic rotor body includes: an axial anti-collision magnet on the rotor side, an external magnetic matrix, an outer envelope, an external magnetic steel, a blade, and a motor rotor. The two ends of the blade are respectively fixed to the motor rotor and the external magnetic matrix. The external magnetic steel is embedded in the groove on the external magnetic matrix. The outer envelope is fixed on the external magnetic matrix and encapsulates the entire external magnetic steel. The entire external magnetic rotor body is an external magnetic rotor body that performs synchronous rotation during work.

[0009] The inner magnetic rotor body includes: an inner magnetic substrate, an inner magnetic steel, an outer envelope, a key, a shaft sleeve, and a shaft. The inner magnetic steel is embedded in the groove of the inner magnetic substrate and is welded and encapsulated by the inner envelope. The inner magnetic substrate is connected to the shaft by a key, and a shaft sleeve is arranged between the shaft and the inner magnetic substrate.

[0010] In a specific implementation example of the utility model, the inner magnetic substrate is locked on the shaft by locking nuts at both ends.

[0011] In a specific implementation example of the utility model, the outer envelope is welded to the outer magnetic substrate by welding.

[0012] In a specific implementation example of the present invention, the outer magnetic steel and the inner magnetic steel are centrally symmetrically distributed on the axial plane, and the outer magnetic steel is longer than the inner magnetic steel in the axial direction.

[0013] In a specific implementation example of the present utility model, the blades are fixed to the motor rotor and the external magnetic substrate respectively by welding.

[0014] The positive progressive effect of the utility model is that the new cross-flow pump structure provided by the utility model has the following advantages: the utility model is different from the traditional cross-flow pump structure which adopts the combined transmission mode of bearing and mechanical seal. The transmission mode of the utility model which utilizes the magnetic coupling characteristics, on the one hand, eliminates the two wearing parts of bearing and mechanical seal, and can effectively reduce the maintenance and replacement costs of equipment; on the other hand, the cooling and heat dissipation mode of the shaft system becomes more intuitive and controllable, and the self-circulation of the working medium can be directly utilized for heat dissipation without the need for external oil / grease and other coolants. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the assembly of the throughflow pump device of the utility model.

[0016] Figure 2 This is a diagram showing the axial local position relationship between the outer and inner magnetic rotor bodies in the utility model.

[0017] Figure 3 This is the radial position relationship diagram of the outer and inner magnetic steels in the utility model ( Figure 2 BB view).

[0018] The following are the names corresponding to the label numbers in this utility model:

[0019] Guide housing 1, guide vanes 2, guide bearing seat 3, water guide bearing 4, adjustment gasket 5, stator side axial anti-collision magnetic steel 6, outer magnetic rotor body 7, inner magnetic rotor body 8, motor housing 9, motor stator 10;

[0020] Axial anti-collision magnetic steel 7-1 on the rotor side, external magnetic substrate 7-2, external envelope 7-3, external magnetic steel 7-4, blades 7-5, motor rotor 7-6;

[0021] Inner magnetic substrate 8-1, inner magnetic steel 8-2, outer envelope 8-3. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to illustrate the technical solution of the present invention in detail.

[0023] Figure 1 This is a schematic diagram of the assembly of the tubular pump device of the utility model. Figure 2 This is a diagram showing the axial local position relationship between the outer and inner magnetic rotor bodies in the utility model. Figure 3 This is the radial position relationship diagram of the outer and inner magnetic steels in the utility model ( Figure 2 BB view), such as Figure 1-3 As shown: the new cross-flow pump structure provided by the utility model includes: a guide housing 1, a guide blade 2, a guide bearing seat 3, a water guide bearing 4, an adjustment gasket 5, an axial anti-collision magnetic steel 6 on the stator side, a motor housing 9, a motor stator 10, an outer magnetic rotor body 7, and an inner magnetic rotor body 8; there is a certain gap between the installation positions of the outer magnetic rotor body 7 and the inner magnetic rotor body 8.

[0024] The external magnetic rotor body 7 includes: an axial anti-collision magnet 7-1 on the rotor side, an external magnetic base 7-2, an outer envelope 7-3, an external magnetic steel 7-4, a blade 7-5, and a motor rotor 7-6. The two ends of the blade 7-5 are respectively fixed to the motor rotor 7-6 and the external magnetic base 7-2. The external magnetic steel 7-4 is embedded in the groove on the external magnetic base 7-2. The outer envelope 7-3 is fixed on the external magnetic base 7-2 and encapsulates the entire external magnetic steel 7-4. The entire external magnetic rotor body is an external magnetic rotor body that performs synchronous rotation during work.

[0025] The inner magnetic rotor body 8 includes: an inner magnetic base 8-1, an inner magnetic steel 8-2, an outer envelope 8-3, a key 8-4, a sleeve 8-5, and a shaft 8-6. The inner magnetic steel 8-2 is embedded in the groove of the inner magnetic base 8-1 and is welded and encapsulated by the inner envelope 8-3; the inner magnetic base 8-1 is connected to the shaft 8-6 by means of a key 8-4, and a sleeve 8-5 is arranged between the shaft 8-6 and the inner magnetic base 8-1.

[0026] The utility model mainly utilizes the magnetic coupling characteristics for transmission. The blade 7-5 is respectively connected to the motor rotor 7-6 and the external magnetic matrix 7-2 by welding; the external magnetic steel 7-4 is embedded in the external magnetic matrix 7-2, and the NS poles of the magnetic steel are arranged as follows: Figure 3 As shown; the outer envelope 7-3 is welded to the outer magnetic substrate 7-2 and encapsulates the entire outer magnetic steel 7-4; the motor rotor connected by the blades and the outer magnetic substrate are regarded as the entire outer magnetic rotor body, and perform synchronous rotation during work.

[0027] The inner magnetic steel 8-2 is embedded in the inner magnetic matrix 8-1 and is welded and encapsulated by the inner encapsulation sleeve 8-3; the NS poles of the inner magnetic steel 8-2 are arranged as follows: Figure 3 As shown; the inner magnetic substrate 8-1 is connected to the shaft 8-6 by means of a key 8-4, and is locked at both ends with locking nuts 8-7 to prevent the inner magnetic substrate from moving axially; the sleeve, shaft, locking nut and inner magnetic substrate connected by the key are regarded as the entire inner magnetic rotor body, which rotates with the entire outer magnetic rotor body at a certain angular difference during operation.

[0028] The outer magnetic steel 7-4 and the inner magnetic steel 8-2 are centrally symmetrically distributed on the axial plane, and the outer magnetic steel 7-4 is longer than the inner magnetic steel 8-2 in the axial direction, which can solve the magnetic leakage phenomenon at the end of the inner magnetic steel, thereby improving the transmission efficiency.

[0029] The outer magnetic rotor body 7 and the inner magnetic rotor body 8 maintain a certain gap at the installation position. This gap is used for the self-circulation of the medium to cool and dissipate the heat of the entire rotor system. The gap value depends on the heat dissipation required by the load and is adjustable.

[0030] Working principle: When rotating, the motor rotor drives the blades and the external magnetic matrix to rotate synchronously. By utilizing the magnetic coupling characteristics between the external magnetic steel 7-4 and the internal magnetic steel 8-2, the internal magnetic matrix 8-1 drives the entire shaft 8-6 through the key 8-4 to rotate with the external magnetic rotor body 7 at a certain angular difference, where the size of the angular difference depends on the size of the medium load.

[0031] During operation, the motor stator rotates synchronously with the blades and the external magnetic matrix. By utilizing the magnetic coupling characteristics between the external and internal magnetic steels, the internal magnetic matrix drives the entire shaft to rotate together with a certain angular difference through the key, thereby realizing the operation of the entire rotor system.

[0032] Different from the traditional cross-flow pump structure that adopts the combined transmission method of bearings and mechanical seals, the transmission method of the utility model using the magnetic coupling characteristics, on the one hand: eliminates the two wearing parts of bearings and mechanical seals, which can effectively reduce the maintenance and replacement costs of equipment; on the other hand: the cooling and heat dissipation method of the shaft system becomes more intuitive and controllable, and the self-circulation of the working medium can be directly used for heat dissipation without the need for external oil / grease and other coolants.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel tubular pump structure, comprising: Guide housing, guide vanes, guide bearing seat, water guide bearing, adjustment gasket, axial anti-collision magnetic steel on the stator side, motor housing, motor stator; characterized in that: the novel cross-flow pump structure also includes: an outer magnetic rotor body and an inner magnetic rotor body; there is a certain gap between the installation positions of the outer magnetic rotor body and the inner magnetic rotor body; The external magnetic rotor body includes: an axial anti-collision magnetic steel on the rotor side, an external magnetic matrix, an external envelope, an external magnetic steel, a blade, and a motor rotor. The two ends of the blade are respectively fixed to the motor rotor and the external magnetic matrix. The external magnetic steel is embedded in the groove on the external magnetic matrix. The external envelope is fixed on the external magnetic matrix and encapsulates the entire external magnetic steel. The entire external magnetic rotor body performs synchronous rotation during operation. The inner magnetic rotor body includes: an inner magnetic substrate, an inner magnetic steel, an outer envelope, a key, a shaft sleeve, and a shaft. The inner magnetic steel is embedded in the groove of the inner magnetic substrate and is welded and encapsulated by the inner envelope. The inner magnetic substrate is connected to the shaft by a key, and a shaft sleeve is arranged between the shaft and the inner magnetic substrate.

2. The novel tubular pump structure according to claim 1 is characterized in that: The inner magnetic matrix is ​​locked on the shaft through locking nuts at both ends.

3. The novel tubular pump structure according to claim 1 is characterized in that: The outer envelope is welded to the outer magnetic substrate by welding.

4. The novel tubular pump structure according to claim 1 is characterized in that: The outer magnetic steel and the inner magnetic steel are centrally symmetrically distributed on the axial plane, and the outer magnetic steel is longer than the inner magnetic steel in the axial direction.

5. The novel tubular pump structure according to claim 1 is characterized in that: The blades are fixed to the motor rotor and the external magnetic substrate respectively by welding.

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