Submersible motor sand prevention device
By designing a submersible motor sand prevention device including sand-swing ring, static ring and filtration system, the problem of insufficient sand prevention effect in the prior art is solved, and more efficient sand and gravel and silt filtration is achieved, extending the service life of the submersible motor and reducing maintenance costs.
Patent Information
- Application Number
- CN202421973959.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The sand prevention effect of existing submersible motor sand prevention devices is insufficient, resulting in sand and gravel and silt easily entering the motor cavity, damaging the motor and increasing maintenance costs.
A submersible motor sand prevention device including a protective cover, a fixed shaft, a sand-swing ring, a static ring and a threaded rod is designed. The sand-swing ring runs synchronously with the fixed shaft to form a negative pressure to prevent sand and gravel from entering; the static ring and the protective cover are closely matched to reduce gaps; the filter cotton and filter element are used to further filter the water flow to prevent silt and sand from entering.
Effectively prevent sand, gravel and silt from entering the submersible motor cavity, extend the motor life, reduce maintenance costs, and improve the sealing and use effect of the motor.
Smart Images
Figure CN222940624U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of sand prevention of submersible motors, and more specifically, to a sand prevention device for submersible motors. Background Art
[0002] The sand prevention device of a submersible motor is a device used to protect the motor from sand and other particulate matters to ensure its normal operation. During operation, water circulation is required inside the water-filled and shielded motor for lubrication and cooling. When sand mixed in the water enters the cavity, it will greatly reduce the service life of the motor. These protection devices can effectively protect the submersible motor, extend its service life, and reduce maintenance costs. When selecting, the usage environment and specific requirements of the motor should be considered to use the submersible motor accordingly.
[0003] In the specific sand prevention of submersible motors, in the prior art, the shaft ends of submersible motors are directly exposed to water. Since the water contains sediment, during the long-term operation of the submersible motor, sediment may easily enter the cavity of the submersible motor, which may cause damage to the motor. Therefore, a protection device is needed to protect it to prevent damage to the submersible motor. Usually, the device only directly uses a protective cover to protect the submersible motor, but the sand prevention effect is insufficient, thus affecting the normal use of the operator. Summary of the Utility Model
[0004] To make up for the above deficiencies, the utility model provides a sand prevention device for submersible motors that overcomes the above technical problems or at least partially solves the above problems.
[0005] The utility model is implemented as follows:
[0006] The utility model provides a sand prevention device for submersible motors, including a mounting frame,
[0007] A protective cover is provided on one side of the mounting frame. A fixed shaft is provided inside the protective cover. A sand throwing ring and a stationary ring are provided on the surface of the fixed shaft. A threaded rod is provided inside the stationary ring;
[0008] A blocking fan is provided on the surface of the fixed shaft. Two groups of filter cotton are provided on one side of the mounting frame. A filter core is provided between the two groups of filter cotton.
[0009] In a preferred solution, the sand throwing ring and the stationary ring are respectively arranged inside and outside the protective cover, and one side of the stationary ring is smooth.
[0010] In a preferred solution, a rubber bearing is provided on the surface of the fixed shaft, and the rubber bearing is provided on one side of the blocking fan.
[0011] In a preferred embodiment, a fixing ring and a mounting ring are provided on the surface of the rubber bearing. Threaded holes are formed inside both the mounting ring and the stationary ring, and the threaded rod is disposed inside the threaded holes.
[0012] In a preferred embodiment, mounting holes are formed inside both the fixing ring and the blocking fan, and bolts are disposed inside the mounting holes.
[0013] In a preferred embodiment, a submersible motor main body is provided on one side of the mounting frame, and the fixed shaft is fixed to one side of the submersible motor main body.
[0014] In a preferred embodiment, a damping ring is provided on the surface of the fixed shaft, and the damping ring is disposed on one side of one set of filter cotton.
[0015] In a preferred embodiment, limiting holes are formed inside both the mounting frame and the protective cover, and limiting bolts are disposed inside a plurality of the limiting holes.
[0016] A submersible motor sand prevention device provided by the present utility model has the following beneficial effects:
[0017] 1. Through the mutual cooperation of the submersible motor main body, the fixed shaft, the sand throwing ring, the stationary ring, the protective cover and the threaded rod, a sand throwing ring is provided on the fixed shaft, which can rotate synchronously with the fixed shaft, and a negative pressure can be formed inside the smooth surface of the stationary ring. External sand and gravel cannot enter the interior, preventing sand and gravel from entering the cavity of the submersible motor main body, thereby protecting the connection between the inside and outside of the protective cover. When it is necessary to further prevent sediment from entering the inner cavity of the submersible motor main body, by using the threaded rod to install the stationary ring, the stationary ring can be tightly fitted with the protective cover, greatly reducing the gap of the protective cover. At the same time, since the protective cover is funnel-shaped, the sealing performance of the submersible motor main body can be improved.
[0018] 2. Through the mutual cooperation of the submersible motor main body, the blocking fan, the filter cotton and the filter core, when it is necessary to further prevent sediment from entering the inner cavity, when the submersible motor main body starts, the blocking fan can also rotate synchronously, reducing the entry of sediment. At this time, if there is still water entering, the filter cotton can perform the first stage of filtration, then enter the filter core for the second stage of filtration, and then enter the filter cotton below the filter core for the third stage of filtration. Finally, the water entering the submersible motor main body is the filtered sand water available for the submersible motor main body, which can lubricate and cool the submersible motor main body, effectively improving the use effect of the submersible motor main body and facilitating the operator to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings;
[0020] Figure 1 is the overall three-dimensional view provided by the embodiment of the present utility model;
[0021] Figure 2 is the schematic cross-sectional structure diagram of the protective cover provided by the embodiment of the present utility model;
[0022] Figure 3 is the schematic cross-sectional structure diagram of the filter cotton provided by the embodiment of the present utility model;
[0023] Figure 4 is provided by the embodiment of the present utility model Figure 3 is the enlarged view of part A in
[0024] In the figure: 11, mounting bracket; 12, protective cover; 13, fixed shaft; 14, sand throwing ring; 15, rubber bearing; 16, stationary ring; 17, fixing ring; 18, blocking fan; 19, mounting ring; 2, submersible motor main body; 21, filter cotton; 22, filter element; 23, damping ring. Specific embodiments
[0025] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.
[0026] Refer to Figures 1 - 4, the present utility model provides a technical solution: a sand prevention device for a submersible motor, including a mounting frame 11, a protective cover 12 is provided on one side of the mounting frame 11, a fixed shaft 13 is provided inside the protective cover 12, a sand throwing ring 14 and a stationary ring 16 are provided on the surface of the fixed shaft 13, a threaded rod is provided inside the stationary ring 16. Through the mutual cooperation of the submersible motor main body 2, the fixed shaft 13, the sand throwing ring 14, the stationary ring 16, the protective cover 12 and the threaded rod, when the operator needs to protect the submersible motor main body 2, the operator can set the sand throwing ring 14 on the fixed shaft 13, so that it can rotate synchronously with the fixed shaft 13, and a negative pressure can be formed inside the surface of the smooth stationary ring 16, and external sand and gravel cannot enter the inside, avoiding sand and gravel from entering the cavity of the submersible motor main body 2, thereby protecting the connection between the inside and outside of the protective cover 12 and improving the service life of the submersible motor main body 2. When the operator needs to further prevent sediment from entering the inner cavity of the submersible motor main body 2, by using the threaded rod, the stationary ring 16 can be installed, so that the stationary ring 16 can be closely matched with the protective cover 12, greatly reducing the gap of the protective cover 12. At the same time, since the protective cover 12 is funnel-shaped, the sealing performance of the submersible motor main body 2 can be improved.
[0027] Referring to Figures 1 - 4 , in a preferred embodiment, a blocking fan 18 is provided on the surface of the fixed shaft 13, two groups of filter cotton 21 are provided on one side of the mounting frame 11, a filter core 22 is provided between the two groups of filter cotton 21, the sand throwing ring 14 and the stationary ring 16 are respectively provided inside and outside the protective cover 12, one side of the stationary ring 16 is smooth, and a negative pressure can be formed. A rubber bearing 15 is provided on the surface of the fixed shaft 13, the rubber bearing 15 is provided on one side of the blocking fan 18, a fixing ring 17 and a mounting ring 19 are provided on the surface of the rubber bearing 15, threaded holes are respectively opened inside the mounting ring 19 and the stationary ring 16, and the threaded rod is provided inside the threaded hole. Mounting holes are respectively opened inside the fixing ring 17 and the blocking fan 18, and bolts are provided inside the mounting holes. Through the mutual cooperation of the submersible motor main body 2, the blocking fan 18, the filter cotton 21 and the filter core 22, when it is necessary to further prevent sediment from entering the inner cavity, when the submersible motor main body 2 starts, the blocking fan 18 can also rotate synchronously, reducing the entry of sediment. At this time, if there is still water entering, the filter cotton 21 can perform the first filtration, then enter the filter core 22 for the second filtration, and then enter the filter cotton 21 below the filter core 22 for the third filtration. Finally, the water entering the submersible motor main body 2 is the filtered sand water available for the submersible motor main body 2, lubricating and cooling the submersible motor main body 2, which can effectively improve the use effect of the submersible motor main body 2 and facilitate the operator to use.
[0028] Referring to Figures 1 - 4In a preferred embodiment, a submersible motor body 2 is provided on one side of the mounting frame 11, a fixed shaft 13 is fixed on one side of the submersible motor body 2, and a damping ring 23 is provided on the surface of the fixed shaft 13, so that when it is impacted or the load changes, the impact force can be buffered to protect the submersible motor body 2 from damage and reduce noise and vibration. The damping ring 23 is provided on one side of one group of filter cottons 21, and limiting holes are provided inside the mounting frame 11 and the protective cover 12, and limiting bolts are provided inside several limiting holes. By providing the limiting bolts, the mounting frame 11 and the protective cover 12 can be installed.
[0029] Among them, the YQS200 submersible motor is a device or equipment existing in the prior art, or a device or equipment that can be realized in the prior art. Its power supply, specific composition and principle are clear to those skilled in the art, so they are not described in detail.
[0030] Specifically, the working process or working principle of the submersible motor sand prevention device is as follows: in the specific sand prevention of the submersible motor, in the prior art, the shaft end of the submersible motor is directly exposed to the water. Since the water contains mud and sand, the submersible motor may cause mud and sand to easily enter the submersible motor cavity during long-term operation, which may cause damage to the motor. Therefore, a protective device is needed to protect it to prevent damage to the submersible motor. The usual device only directly uses the protective cover 12 to protect the submersible motor, but the sand prevention effect is insufficient, thereby affecting the normal use of the operator. Therefore, the technical solution can solve the above problem. When the operator needs to protect the submersible motor body 2, the operator can set a sand throwing ring 14 on the fixed shaft 13, so that it can operate synchronously with the fixed shaft 13, and can form a negative pressure with the smooth surface of the static ring 16. The external sand and gravel cannot enter the interior, thereby preventing sand and gravel from entering the cavity of the submersible motor body 2, thereby protecting the internal and external connections of the protective cover 12, and improving The life of the submersible motor body 2. When the operator needs to further prevent mud and sand from entering the inner cavity of the submersible motor body 2, the static ring 16 can be installed by using a threaded rod, so that the static ring 16 can be closely matched with the protective cover 12, so that the gap of the protective cover 12 is greatly reduced. At the same time, since the protective cover 12 is funnel-shaped, the sealing performance of the submersible motor body 2 can be improved to further prevent mud and sand from entering the inner cavity. When the submersible motor body 2 is started, the blocking fan 18 can also rotate synchronously to reduce the entry of mud and sand. At this time, if there is still water entering, the filter cotton 21 can be used for the first filtration, and then enter the filter element 22 for the second filtration, and then enter the filter cotton 21 under the filter element 22 for the third filtration. Finally, the water entering the submersible motor body 2 is the sand filtering water that can be used by the submersible motor body 2, which lubricates and cools the submersible motor body 2, can effectively improve the use effect of the submersible motor body 2, and is convenient for the operator to use. At this point, all processes are completed.
[0031] It should be noted that the submersible motor main body 2 is electrically connected to an external power supply and is a device or equipment existing in the prior art, or a device or equipment that can be realized by the prior art. Its power supply, specific composition and principle are clear to those skilled in the art, so they will not be elaborated in detail.
Claims
1. A submersible motor sand prevention device, characterized in that: comprising a mounting frame (11), A protective cover (12) is provided on one side of the mounting frame (11), a fixed shaft (13) is provided inside the protective cover (12), a sand throwing ring (14) and a stationary ring (16) are provided on the surface of the stationary shaft (13), and a threaded rod is provided inside the stationary ring (16); A blocking fan (18) is arranged on the surface of the fixed shaft (13), two groups of filter cotton (21) are arranged on one side of the mounting frame (11), and a filter core (22) is arranged between the two groups of filter cotton (21).
2. A submersible motor sand prevention device according to claim 1, characterized in that: The sand throwing ring (14) and the static ring (16) are respectively arranged inside and outside the protective cover (12), and one side of the static ring (16) is smoothly arranged.
3. A submersible motor sand prevention device according to claim 2, characterized in that: A rubber bearing (15) is provided on the surface of the fixed shaft (13), and the rubber bearing (15) is arranged on one side of the blocking fan (18).
4. A submersible motor sand prevention device according to claim 3, characterized in that: The surface of the rubber bearing (15) is provided with a fixing ring (17) and a mounting ring (19), the interior of the mounting ring (19) and the interior of the stationary ring (16) are both provided with threaded holes, and the threaded rod is arranged inside the threaded holes.
5. A submersible motor sand prevention device according to claim 4, characterized in that: The fixing ring (17) and the blocking fan (18) are both provided with mounting holes inside, and bolts are arranged inside the mounting holes.
6. A submersible motor sand prevention device according to claim 5, characterized in that: A submersible motor body (2) is provided on one side of the mounting frame (11), and the fixed shaft (13) is fixed to one side of the submersible motor body (2).
7. A submersible motor sand prevention device according to claim 6, characterized in that: A damping ring (23) is provided on the surface of the fixed shaft (13), and the damping ring (23) is arranged on one side of one group of filter cottons (21).
8. A submersible motor sand prevention device according to claim 7, characterized in that: Limiting holes are provided inside the mounting frame (11) and the protective cover (12), and limiting bolts are provided inside a plurality of the limiting holes.