Balanced upward-moving-preventing structure for deep-well pump
By setting up multi-stage impeller components and bracket components in deep well pumps, using mechanical seals, bearings and rubber sleeves, the problem of impeller floating is solved, effective protection of impeller is achieved, and the operation stability and service life of the equipment are improved.
Patent Information
- Application Number
- CN202422299868.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-20
AI Technical Summary
When existing deep well pumps operate in large flow ranges, the impeller is prone to float, resulting in failure of the upper series structure, and existing protective measures have poor concentricity and wear problems.
The pump housing is equipped with a multi-stage impeller assembly and a bracket assembly. The central shaft is inserted into the coupling shaft. The coupling shaft jacket is equipped with a mechanical seal and bearing. A sealing butter and rubber sleeve are provided above the bearing. The bracket assembly and the inner wall of the pump housing are fixed by positioning nails to form a tight connection to prevent the impeller from floating.
It improves the concentricity of the impeller assembly, effectively prevents the impeller from floating, protects the internal structure, and extends the service life of the equipment.
Smart Images
Figure CN223075763U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of anti-axial movement structures, and relates to a balanced anti-axial movement structure for deep well pumps. Background Art
[0002] A deep well pump is a pump that is immersed in a groundwater well for pumping and transporting water, and is widely used in farmland drainage and irrigation, industrial and mining enterprises, urban water supply and drainage, and sewage treatment, etc. Different from other pumps, a deep well pump has multiple impellers. When the deep well pump operates, the motor shaft of the motor of the deep well pump drives multiple impellers to rotate simultaneously, thereby driving the water flow. When the deep well pump operates in a large flow range, the head of the pump is very low. At this time, the impellers will float upward along the trajectory of the motor shaft as a whole, resulting in an axial movement phenomenon. In the existing anti-axial movement structure, a plastic intermediate bracket needs to be set for every few impellers inside. A rubber intermediate bracket sleeve is installed inside the intermediate bracket, and then it rubs against the ceramic sleeve on the impeller shaft to ensure concentricity. The disadvantage is that there must be a gap of about 0.15 MM between the ceramic sleeve and the intermediate bracket sleeve to prevent jamming. The concentricity is poor. After long-term wear, the gap will become larger, eventually causing the structure to fail, and there is no effective protection after the impellers move axially as a whole. Therefore, a balanced anti-axial movement structure for deep well pumps is proposed for the above problems. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a bonding and assembling device for filling blocks of a sealed clip packaging box for the above problems.
[0004] To achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A balanced anti-axial movement structure for a deep well pump, including a pump housing. An outlet interface part and an inlet interface part are respectively arranged on the upper and lower parts of the pump housing. A multi-stage impeller assembly is arranged inside the pump housing, and the upper end of the multi-stage impeller assembly is inserted into the bottom of a connecting shaft. A support assembly is arranged above the inside of the pump housing, and the connecting shaft is inserted into the support assembly. A mechanical seal is sleeved outside the middle part of the connecting shaft, and the mechanical seal is placed below the inside of the support assembly. The upper part of the connecting shaft is inserted into a bearing, and the bearing is arranged in the middle of the support assembly. Above the bearing, sealing grease and a rubber sleeve are successively arranged from bottom to top. A positioning pin is arranged between the outer side of the upper part of the support assembly and the inner wall of the pump housing in a circumferential manner.
[0006] In the above-mentioned balanced anti-axial movement structure for a deep well pump, a central shaft is arranged inside the multi-stage impeller assembly, and both the upper and lower ends of the central shaft penetrate through the upper and lower parts of the multi-stage impeller assembly. A plug-in groove part is formed inside the lower part of the connecting shaft, and the upper part of the central shaft is inserted and fixedly connected inside the plug-in groove part.
[0007] In the above-mentioned balance and anti-upward structure for deep-well pumps, a plurality of convex platform parts are provided along the inner wall of the upper part of the pump housing, and the plurality of convex platform parts are equally divided along the inner wall of the pump housing. A plurality of positioning convex block parts are provided along the upper part of the bracket assembly, and the positioning convex block parts are equally divided along the upper part of the bracket assembly.
[0008] In the above-mentioned balance and anti-upward structure for deep-well pumps, the positioning convex block parts correspond to the convex platform parts, and the positioning convex block parts are placed above the convex platform parts. At the same time, positioning pins are inserted and fixedly connected in both the positioning convex block parts and the convex platform parts.
[0009] In the above-mentioned balance and anti-upward structure for deep-well pumps, an internal space is formed in the bracket assembly, and openings are provided at both the upper and lower parts of the internal space. At the same time, step parts are provided at the upper and lower openings of the internal space. A connecting shaft is inserted and rotatably connected to the lower part of the internal space, and the outer wall of the connecting shaft is closely attached to the inner wall of the lower opening of the internal space.
[0010] In the above-mentioned balance and anti-upward structure for deep-well pumps, a mechanical seal is sleeved and rotatably connected to the middle part of the connecting shaft, and the outer wall of the mechanical seal is closely attached to the inner wall of the lower part of the internal space. At the same time, the bottom of the mechanical seal is placed on the step part at the lower opening of the internal space.
[0011] In the above-mentioned balance and anti-upward structure for deep-well pumps, the upper part of the connecting shaft is inserted into a bearing, and the outer wall of the bearing is closely attached to the inner wall of the middle part of the internal space. The lower part of the bearing presses on the upper part of the mechanical seal, and the upper part of the bearing is attached to the step part at the upper opening of the internal space.
[0012] In the above-mentioned balance and anti-upward structure for deep-well pumps, the bottom of a rubber sleeve is clamped and fixedly connected to the upper part of the internal space, and the bottom of the rubber sleeve presses on the top of the bearing. At the same time, the lower part of the rubber sleeve is clamped into the step part of the upper opening of the internal space along the circumference.
[0013] In the above-mentioned balance and anti-upward structure for deep-well pumps, sealing grease is stuffed into the rubber sleeve, and the sealing grease is placed between the bearing and the top of the connecting shaft.
[0014] In the above-mentioned balance and anti-upward structure for deep-well pumps, the bracket assembly is placed near the water outlet interface part at one end of the pump housing.
[0015] Compared with the existing technology, the advantages of the present utility model are as follows:
[0016] In the present utility model, a multi-stage impeller assembly is provided inside the pump housing, and a central shaft is provided in the middle of the multi-stage impeller assembly. One end of the central shaft is inserted into the connecting shaft. A support assembly is provided inside the pump housing, and the connecting shaft is inserted into the lower part of the support assembly. A mechanical seal is provided outside the middle of the connecting shaft, and a bearing is sleeved outside the upper part of the connecting shaft. At the same time, both the mechanical seal and the bearing are placed inside the support assembly. A sealing grease and a rubber sleeve are provided above the bearing, and the lower part of the rubber sleeve is snapped into the support assembly. After adding the support assembly and its internal structure to the pump housing, the concentricity is much higher than the original method. Moreover, when the internal impeller floats, the force is absorbed by the bearing, effectively solving the problem of excessive floating and effectively protecting the entire internal structure.
[0017] Other advantages, objectives, and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. Brief Description of the Drawings
[0018] Figure 1 is the overall schematic diagram of the present utility model;
[0019] Figure 2 is the enlarged schematic diagram at position A of the present utility model;
[0020] Figure 3 is the top view schematic diagram of the support assembly structure of the present utility model;
[0021] Figure 4 is the schematic diagram of the connecting shaft structure of the present utility model;
[0022] Figure 5 is the top view schematic diagram of the cooperation between the pump housing and the support assembly of the present utility model.
[0023] In the figure: 1. Pump housing; 101. Boss part; 2. Multi-stage impeller assembly; 201. Central shaft; 3. Connecting shaft; 301. Plug-in groove part; 4. Support assembly; 401. Built-in space; 402. Positioning convex block part; 5. Mechanical seal; 6. Bearing; 7. Sealing grease; 8. Rubber sleeve; 9. Positioning pin; 10. Water outlet interface part; 11. Water inlet interface part. Detailed Description of the Embodiment
[0024] The present utility model will be further described below with reference to the drawings.
[0025] As Figures 1-5As shown in the figure, a balanced anti-upper-string structure for a deep-well pump includes a pump housing 1. An outlet interface part 10 and an inlet interface part 11 are respectively arranged at the upper and lower parts of the pump housing 1. A multi-stage impeller assembly 2 is arranged inside the pump housing 1, and the upper end of the multi-stage impeller assembly 2 is inserted into the bottom of a connecting shaft 3. Above the interior of the pump housing 1, there is a support assembly 4, and the connecting shaft 3 is inserted into the support assembly 4. A mechanical seal 5 is sleeved outside the middle part of the connecting shaft 3, and the mechanical seal 5 is placed below the interior of the support assembly 4. The upper part of the connecting shaft 3 is inserted into a bearing 6, and the bearing 6 is placed in the middle of the support assembly 4. Above the bearing 6, a sealing grease 7 and a rubber sleeve 8 are successively arranged from bottom to top. Between the outer side of the upper part of the support assembly 4 and the inner wall of the pump housing 1 for one week, there are positioning pins 9.
[0026] Inside the multi-stage impeller assembly 2, there is a central shaft 201, and both the upper and lower ends of the central shaft 201 penetrate through the upper and lower parts of the multi-stage impeller assembly 2. Inside the lower part of the connecting shaft 3, there is a plug-in groove part 301, and the upper part of the central shaft 201 is inserted and fixedly connected inside the plug-in groove part 301.
[0027] Above the central shaft 201 of the multi-stage impeller assembly 2, there is a connecting shaft 3. When the multi-stage impeller assembly 2 works, it can drive the connecting shaft 3 to rotate and work as well.
[0028] On the inner wall of the upper part of the pump housing 1 for one week, there are multiple boss parts 101, and the multiple boss parts 101 equally divide the inner wall of the pump housing 1 for one week. On the upper part of the support assembly 4 for one week, there are multiple positioning boss parts 402, and the positioning boss parts 402 equally divide the upper part of the support assembly 4 for one week.
[0029] Furthermore, the positioning boss parts 402 correspond to the boss parts 101, and the positioning boss parts 402 are placed above the boss parts 101. At the same time, positioning pins 9 are inserted and fixedly connected inside both the positioning boss parts 402 and the boss parts 101.
[0030] After the boss parts 101 arranged inside the pump housing 1 and the positioning boss parts 402 arranged on the support assembly 4 are connected by the positioning pins 9, the support assembly 4 is placed at the middle position of one end of the pump housing 1, and there is a distance between the side surface of the support assembly 4 and the inner wall of the pump housing 1. In this way, when water passes through the inside of the pump housing 1, it will not encounter obstacles or be unsmooth.
[0031] Inside the support assembly 4, there is an internal space 401, and openings are arranged at both the upper and lower parts of the internal space 401. At the same time, there are steps at the upper and lower openings of the internal space 401. The lower part of the internal space 401 is inserted and rotatably connected to the connecting shaft 3, and the outer wall of the connecting shaft 3 is closely attached to the inner wall of the lower opening of the internal space 401.
[0032] There is a support assembly 4 outside the connecting shaft 3. Since the connecting shaft 3 is in contact with the lower opening of the support assembly 4, when the central shaft 201 drives the connecting shaft 3 to work, the connecting shaft 3 will not deviate inside the support assembly 4.
[0033] Further, a mechanical seal 5 is sleeved and rotatably connected to the middle part of the connecting shaft 3, and the outer wall of the mechanical seal 5 is closely attached to the inner wall below the built-in space 401. At the same time, the bottom of the mechanical seal 5 is placed on the step at the opening below the built-in space 401.
[0034] The mechanical seal 5 sleeved on the middle part of the connecting shaft 3 is attached to the inside of the support assembly 4. When the connecting shaft 3 rotates, the mechanical seal 5 abuts against the built-in space 401 throughout the whole circle. In this way, the mechanical seal 5 not only plays a sealing role, but also protects the connecting shaft 3.
[0035] Further, the upper part of the connecting shaft 3 is inserted into the bearing 6, and the outer wall of the bearing 6 is closely attached to the inner wall in the middle of the built-in space 401. The lower part of the bearing 6 presses against the upper part of the mechanical seal 5, and the upper part of the bearing 6 is attached to the step at the opening above the built-in space 401.
[0036] After the bearing 6 is installed above the connecting shaft 3, the bearing 6 is stuck in the upper part inside the support assembly 4. The bearing 6 inside can ensure concentricity, and at the same time, the bearing 6 can absorb the upward floating of the multi-stage impeller assembly 2.
[0037] Further, the bottom of the rubber sleeve 8 is clamped and fixedly connected to the upper part of the built-in space 401, and the bottom of the rubber sleeve 8 presses against the top of the bearing 6. At the same time, the circumferential side below the rubber sleeve 8 is clamped into the step at the opening above the built-in space 401.
[0038] Further, sealing grease 7 is stuffed into the rubber sleeve 8, and the sealing grease 7 is placed between the bearing 6 and the top of the connecting shaft 3.
[0039] Further, the support assembly 4 is placed near the water outlet interface part 10 at one end of the pump housing 1.
[0040] There is sealing grease 7 and a rubber sleeve 8 above the bearing 6 and the connecting shaft 3, so as to prevent water from entering above the support assembly 4, and the sealing grease 7 can lubricate the internal bearing 6 and connecting shaft 3 during operation.
[0041] Working principle:
[0042] Inside the pump housing 1, a multi-stage impeller assembly 2 is provided, and a central shaft 201 is provided in the middle of the multi-stage impeller assembly 2. One end of the central shaft 201 is inserted into the connecting shaft 3, so that the connecting shaft 3 and the multi-stage impeller assembly 2 work simultaneously. A support assembly 4 is provided in the pump housing 1, and the connecting shaft 3 is inserted into the lower part of the support assembly 4. At the same time, the outer wall of the connecting shaft 3 is in close fit with the inner wall of the opening at the lower part of the support assembly 4, but it will not be affected when the connecting shaft 3 rotates. A mechanical seal 5 is provided outside the middle of the connecting shaft 3, and the outer wall of the mechanical seal 5 is in close fit with the inner wall of the support assembly 4. The mechanical seal 5 is used to seal the connecting shaft 3 and the lower part of the support assembly 4. A bearing 6 is sleeved outside the upper part of the connecting shaft 3, and a sealing grease 7 and a rubber sleeve 8 are provided above the bearing 6. At the same time, the lower part of the rubber sleeve 8 is stuck inside the upper part of the support assembly 4. In this way, the inside of the support assembly 4 is sealed by the mechanical seal 5 and the rubber sleeve 8 to prevent water from entering.
[0043] In addition, the connecting shaft 3 is respectively connected to the bearing 6 and the multi-stage impeller assembly 2 at the upper and lower parts, which can ensure concentricity. Moreover, when the multi-stage impeller assembly 2 floats, the force is also absorbed by the upper bearing 6, effectively solving the problem of excessive floating.
[0044] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention.
[0045] Although terms such as 1, pump housing; 101, boss part; 2, multi-stage impeller assembly; 201, central shaft; 3, connecting shaft; 301, plug-in groove part; 4, support assembly; 401, internal space; 402, positioning convex block part; 5, mechanical seal; 6, bearing; 7, sealing grease; 8, rubber sleeve; 9, positioning pin; 10, water outlet interface part; 11, water inlet interface part, etc. are used more in this article, the possibility of using other terms is not excluded. Using these terms is only for more conveniently describing and explaining the essence of the present invention, and interpreting them as any additional limitation is contrary to the spirit of the present invention.
Claims
1. A balancing and anti-axial-thrust structure for a deep well pump, comprising a pump housing (1), wherein a water outlet interface portion (10) and a water inlet interface portion (11) are respectively arranged on the upper and lower parts of the pump housing (1), and it is characterized in that: A multi-stage impeller assembly (2) is provided inside the pump housing (1), and the upper end of the multi-stage impeller assembly (2) is inserted into the bottom of the connecting shaft (3). Above the inside of the pump housing (1), a support assembly (4) is provided, and the connecting shaft (3) is inserted inside the support assembly (4). A mechanical seal (5) is sleeved outside the middle of the connecting shaft (3), and the mechanical seal (5) is placed below the inside of the support assembly (4). Above the connecting shaft (3), it is inserted into a bearing (6), and the bearing (6) is placed in the middle of the support assembly (4). Above the bearing (6), a sealing grease (7) and a rubber sleeve (8) are successively arranged from bottom to top. Between the outer side of the upper circumference of the support assembly (4) and the inner wall circumference of the pump housing (1), a positioning pin (9) is provided.
2. The balance anti-axial movement structure for deep well pumps according to claim 1, wherein: A central shaft (201) is provided inside the multi-stage impeller assembly (2), and both the upper and lower ends of the central shaft (201) penetrate above and below the multi-stage impeller assembly (2). Inside the lower part of the connecting shaft (3), a plug-in groove part (301) is formed, and the upper part of the central shaft (201) is inserted and fixedly connected inside the plug-in groove part (301).
3. The balance anti-upper string structure for deep well pumps according to claim 2, characterized in that: A plurality of boss parts (101) are provided on the inner wall circumference of the upper part of the pump housing (1), and the plurality of boss parts (101) equally divide the inner wall circumference of the pump housing (1). A plurality of positioning boss parts (402) are provided on the upper circumference of the support assembly (4), and the positioning boss parts (402) equally divide the upper circumference of the support assembly (4).
4. The balance anti-upper string structure for deep well pumps according to claim 3, characterized in that: The positioning boss part (402) corresponds to the boss part (101), and the positioning boss part (402) is placed above the boss part (101). At the same time, a positioning pin (9) is inserted and fixedly connected inside both the positioning boss part (402) and the boss part (101).
5. The balance anti-upper-string structure for deep well pumps according to claim 4, characterized in that: An internal space (401) is formed inside the support assembly (4), and both the upper and lower parts of the internal space (401) are provided with openings. At the same time, step parts are provided at the upper and lower openings of the internal space (401). The lower part of the internal space (401) is inserted and rotatably connected to the connecting shaft (3), and the outer wall of the connecting shaft (3) is in close fit with the inner wall of the lower opening of the internal space (401).
6. The balance anti-upper string structure for deep well pumps according to claim 5, characterized in that: The mechanical seal (5) is sleeved outside the middle of the connecting shaft (3) and is rotatably connected. The outer wall of the mechanical seal (5) is in close fit with the lower inner wall of the internal space (401). At the same time, the bottom of the mechanical seal (5) is placed on the step part at the lower opening of the internal space (401).
7. The balance anti-upper string structure for deep well pumps according to claim 6, characterized in that: The upper part of the connecting shaft (3) is inserted into the bearing (6), and the outer wall of the bearing (6) is in close fit with the middle inner wall of the internal space (401). The lower part of the bearing (6) presses on the upper part of the mechanical seal (5), and the upper part of the bearing (6) is in fit with the step part at the upper opening of the internal space (401).
8. The balance anti-upper-string structure for deep well pumps according to claim 7, characterized in that: The bottom of the rubber sleeve (8) is snapped and fixedly connected to the upper part of the internal space (401), and the bottom of the rubber sleeve (8) presses on the top of the bearing (6). At the same time, the lower circumference side of the rubber sleeve (8) is snapped into the step part at the upper opening of the internal space (401).
9. The balanced anti-axial movement structure for deep well pumps according to claim 8, characterized in that: The sealing grease (7) is stuffed inside the rubber sleeve (8), and the sealing grease (7) is placed between the bearing (6) and the top of the connecting shaft (3).
10. The balance anti-upper string structure for deep well pumps according to claim 1, characterized in that: The bracket assembly (4) is placed near the water outlet interface portion (10) at one end of the pump housing (1).