A detachable vertical middle-opening pump shaft seal water leakage collection structure

Abstract

The utility model discloses an easily detachable vertical middle open pump shaft seal leakage water collection structure belongs to middle open pump technical field, including with the mutual fixed setting of middle open pump main shaft and throw water tray, and detachable collection container, and the collection container opening is upward, and throw water tray is surrounded in the inside, wherein, throw water tray and the mutual sealing of main shaft is arranged to make the leakage liquid flow from the surface of main shaft to the surface of throw water tray, collection container includes first half disc and second half disc, and first half disc and second half disc are mutually spliced and installed on the pump body, and the inboard of first half disc and second half disc is provided with the baffle respectively, and the butt joint flange of inwardly bent arrangement is still provided on the baffle, and the butt joint flange is fixed and spliced into an organic whole after mutual contact, the utility model discloses be used to solve the problem that the current middle open pump lacks the effective collection isolation measure of leakage liquid, and the conventional collection isolation device is inconvenient to use on middle open pump.

Description

Technical Field

[0001] This utility model belongs to the field of split-case pump technology, specifically a structure for collecting leakage water from the shaft seal of an easily detachable vertical split-case pump. Background Technology

[0002] Horizontal split-case pumps typically have a large axial installation dimension. In situations where installation space is limited, or to reduce construction and foundation costs, vertical installation is often adopted. Vertical split-case pumps, with their advantages of small footprint and simple foundation structure, are widely used in related fields.

[0003] Currently, the shaft seal structure of vertical split-case pumps largely follows the design scheme of horizontal pumps. In a vertical installation, the shaft seal is located at the lower end of the pump body. If leakage occurs, the leaking medium may spread upwards along the pump shaft and seep into the bearing assembly, leading to bearing lubrication failure or damage. In existing technology, most split-case pumps use mechanical seals as the shaft seal method, but their structure is relatively complex, manufacturing costs are high, maintenance is difficult, and leakage is still difficult to completely avoid during long-term operation. Furthermore, existing structures lack effective measures for collecting and isolating leaked liquid when shaft seal leakage occurs, further increasing the risk of bearing damage. Due to the inherent structural characteristics of split-case pumps, conventional leakage collection devices are often difficult to install directly, and even if installed, their isolation and collection effects cannot be fully utilized.

[0004] Therefore, it is necessary to design a leak collection structure that is easy to disassemble and install in order to solve the above-mentioned technical problems and improve the reliability and maintenance convenience of vertical split-case pump operation. Utility Model Content

[0005] To address the above problems, this utility model provides an easily detachable vertical split-case pump shaft seal leakage water collection structure, which solves the problem that existing split-case pumps lack effective measures for collecting and isolating leaked liquid, and that conventional collection and isolation devices are not convenient to use on split-case pumps.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A detachable vertical split-case pump shaft seal leakage water collection structure includes a water-throwing plate fixedly disposed with the main shaft of the split-case pump, and a detachable collection container with the opening facing upward and surrounding the water-throwing plate inside. The water-slinging plate and the main shaft are sealed to each other so that leaked liquid flows from the surface of the main shaft to the surface of the water-slinging plate. The collection container includes a first half-disc and a second half-disc. The first half-disc and the second half-disc are spliced ​​together and installed on the pump body. The inner sides of the first half-disc and the second half-disc are respectively provided with isolation plates. The isolation plates are also provided with inwardly bent butt flanges. After the butt flanges come into contact with each other, they are fixedly spliced ​​into one piece. A storage cavity is formed between the isolation plate and the side walls of the first and second half-plates. The edge of the water-spraying plate extends into the storage cavity to collect leaked liquid.

[0007] As a further improvement to the above solution, the splicing surfaces of the first and second half-discs are provided with concave grooves, and a first sealing element can be detachably installed in the grooves to prevent leaked liquid from leaking from the splicing surfaces.

[0008] As a further improvement to the above solution, a mounting plate is provided on the side of the first half-disc, and the mounting plate is provided with several mounting notches for mounting and fixing the first half-disc, the second half-disc as a whole to the pump body.

[0009] As a further improvement to the above scheme, a drain outlet is also provided on the side of the first half-plate.

[0010] As a further improvement to the above solution, the water-spinning plate includes a sleeve that fits into the main shaft. A second seal is installed on the inner cavity of the sleeve between the sleeve and the main shaft to prevent leaked liquid from filling the gap between the sleeve and the main shaft. The sleeve is also provided with several through holes, and locking bolts that are fixed to the main shaft are installed in the through holes.

[0011] As a further improvement to the above solution, a disc is fixedly installed on the side of the sleeve, and the disc is arranged in a conical shape with an incline downwards. The edge of the disk is provided with a downward flow guide fold, and the bottom surface of the flow guide fold is lower than the top surface of the isolation plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In this invention, the leaked liquid can be diverted onto the surface of the water-spinning plate by the water-spinning plate, and centrifugal force can be used to throw the leaked liquid into the collection container, preventing the leaked liquid from entering the bearing components and causing damage to the bearing components. Moreover, by collecting and isolating the leaked liquid, the original high-cost mechanical seal can be replaced with a packing seal, which can effectively save costs and facilitate maintenance. In this application, the collection container is a two-half collection plate with the same structure, which can meet the usage requirements of the split-case pump itself. When replacing, there is no need to disassemble the motor and the lower bearing, making disassembly and assembly simpler and maintenance more convenient. In this invention, the second sealing element can seal the mating surface between the first and second half-discs, reducing leakage of the collected liquid in the collection container. The liquid is then discharged outward through the drain outlet. The first half-disc has a mounting plate and a mounting notch for easy connection with the pump body. In this invention, the sleeve and the main shaft are sealed to each other, which allows most of the leaked liquid to be guided to the surface of the disc and centrifugally thrown into the collection container by the rotation of the disc. The disc is designed with an inclined conical structure to facilitate the downward flow of liquid, and the designed guide flange can facilitate the accurate flow of liquid into the storage cavity, while avoiding liquid splashing onto the main shaft below the water-throwing plate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 A schematic diagram of the structure of the water basin for the commander; Figure 4 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0014] In the diagram: 1. Spinning tray; 2. Collection container; 3. First seal; 4. Second seal; 5. Locking bolt; 11. Sleeve sleeve; 12. Disc; 13. Guide flange; 14. Through hole; 21. First half-disc; 22. Second half-disc; 23. Isolation plate; 24. Groove; 25. Mounting plate; 26. Drain outlet; 231. Butt flange; 251. Mounting notch. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution, the present invention will be described in detail below with reference to the embodiments. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0016] like Figure 1-4 As shown, the specific solution of this embodiment is: an easily detachable vertical split-case pump shaft seal leakage water collection structure, including a water-throwing plate 1 fixedly disposed with the main shaft of the split-case pump, and a detachable collection container 2. The collection container 2 has an upward opening and surrounds the water-throwing plate 1 inside, as shown. Figure 1 As shown, in this embodiment, the water-spinning plate 1 is located at least half the height of the collection container 2. This allows the liquid being splashed out by the water-spinning plate 1 to be blocked by the collection container 2 when the water-spinning plate 1 rotates with the main shaft, reducing the splashing to the outside and ensuring that the liquid being splashed out is all inside the collection container 2. The water-spinning plate 1 and the main shaft are sealed to each other, so that leaked liquid flows from the surface of the main shaft to the surface of the water-spinning plate 1. For details, please refer to the attached document. Figure 3 , 4 As shown; the collection container 2 includes a first half-plate 21 and a second half-plate 22, as... Figure 2As shown, the first half-disc 21 and the second half-disc 22 are semi-cylindrical structures. When spliced ​​together, they form a cup-shaped structure with the opening facing upwards. Specifically, the first half-disc 21 and the second half-disc 22 are spliced ​​together and installed on the pump body, sleeved on the outside of the main shaft. The bottom is provided with a circular slot that avoids contact with the main shaft. The first half-disc 21 and the second half-disc 22 are respectively provided with isolation plates 23. The isolation plates 23 are also provided with inwardly bent butt flanges 231. After the butt flanges 231 come into contact with each other, they are fixedly spliced ​​into a whole. The butt flanges 231 are provided with corresponding insertion holes. The insertion holes are fixed by installing connectors, such as bolts. The isolation plates 23 and the side walls of the first half-disc 21 and the second half-disc 22 form a storage cavity. The edge of the water-slinging plate 1 extends into the storage cavity to collect leaked liquid.

[0017] As a preferred embodiment of the above embodiments, please refer to the appendix. Figure 2 The first half-plate 21 and the second half-plate 22 are provided with concave grooves 24. The first sealing element 3 can be detachably installed in the grooves 24. In this embodiment, the first sealing element 3 is a sealing strip with a structure similar to the grooves 24, which is used to prevent leaked liquid from leaking from the splicing surface.

[0018] The first half-plate 21 has a mounting plate 25 on its side, and the mounting plate 25 has several mounting notches 251 for mounting and fixing the first half-plate 21 and the second half-plate 22 to the pump body.

[0019] The side of the first half-plate 21 is also provided with a drain outlet 26, and the collected liquid can be discharged outward by connecting a drainage pipe to the drain outlet 26.

[0020] As a preferred embodiment of the above embodiments, please refer to the appendix. Figure 3 , 4 The water-spinning pan 1 includes a sleeve 11 that fits into the main shaft. A second seal 4 is installed between the inner cavity of the sleeve 11 and the main shaft. In this embodiment, the second seal 4 is an O-ring or a split seal. An annular groove for installing the second seal 4 is provided on the main shaft to prevent the second seal 4 from sliding up and down and causing displacement, thus preventing leaked liquid from filling the gap between the sleeve 11 and the main shaft. The sleeve 11 is also provided with several through holes 14. Locking bolts 5 that are fixed to the main shaft are installed in the through holes 14. Similarly, a connecting groove is provided on the main shaft to facilitate the fixing of the locking bolts 5 to each other, so that the sleeve 11 and the main shaft are fixed and stable after the locking bolts 5 are tightened.

[0021] A disc 12 is fixedly mounted on the side of the sleeve 11. The disc 12 is arranged in a conical shape with an incline downwards. This structure facilitates the downward flow of water. The edge of the disc 12 is provided with a downward guide flange 13. The bottom surface of the guide flange 13 is lower than the top surface of the partition plate 23. This ensures that water can be thrown into the storage cavity when the disc 12 rotates, and prevents water from splashing onto the main shaft below the disc 12.

[0022] It should be noted that, in this document, the terms "including," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of the present invention. These examples are merely for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be pointed out that, due to the limitations of written expression and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the present invention to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A detachable vertical split-case pump shaft seal leakage water collection structure, characterized in that, It includes a water-slinging plate (1) fixedly connected to the main shaft of the split-case pump, and a detachable collection container (2) with the opening facing upward and surrounding the water-slinging plate (1) inside; The water-spinning plate (1) and the main shaft are sealed to each other so that the leaked liquid flows from the surface of the main shaft to the surface of the water-spinning plate (1); The collection container (2) includes a first half-plate (21) and a second half-plate (22). The first half-plate (21) and the second half-plate (22) are spliced ​​together and installed on the pump body. The inner sides of the first half-plate (21) and the second half-plate (22) are respectively provided with isolation plates (23). The isolation plates (23) are also provided with inwardly bent butt flanges (231). The butt flanges (231) are fixedly spliced ​​together after contacting each other. A storage cavity is formed between the isolation plate (23) and the side walls of the first half-plate (21) and the second half-plate (22), and the edge of the water-spraying plate (1) extends into the storage cavity to collect leaked liquid.

2. The easily detachable vertical split-case pump shaft seal leakage water collection structure according to claim 1, characterized in that, The first half-plate (21) and the second half-plate (22) are provided with concave grooves (24), and a first seal (3) can be detachably installed in the grooves (24) to prevent leaked liquid from leaking from the splicing surface.

3. The easily detachable vertical split-case pump shaft seal leakage water collection structure according to claim 1, characterized in that, The first half-plate (21) has a mounting plate (25) on its side. The mounting plate (25) has several mounting notches (251) for mounting and fixing the first half-plate (21) and the second half-plate (22) to the pump body.

4. The easily detachable vertical split-case pump shaft seal leakage water collection structure according to claim 1, characterized in that, The first half plate (21) also has a drain outlet (26) on its side.

5. The easily detachable vertical split-case pump shaft seal leakage water collection structure according to claim 1, characterized in that, The water-spinning pan (1) includes a sleeve (11) that is fitted to the main shaft. A second seal (4) is installed on the inner cavity of the sleeve (11) between the sleeve (11) and the main shaft to prevent leaking liquid from filling the gap between the sleeve (11) and the main shaft. The sleeve (11) is also provided with several through holes (14), and locking bolts (5) that are fixed to the main shaft are installed in the through holes (14).

6. The easily detachable vertical split-case pump shaft seal leakage water collection structure according to claim 5, characterized in that, A disc (12) is fixedly installed on the side of the sleeve (11), and the disc (12) is arranged in a conical shape with an inclined downward direction; The edge of the disk (12) is provided with a downward flow guide flange (13), the bottom surface of which is lower than the top surface of the partition plate (23).

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