Horizontal type water supply pump shaft seal water blocking box

Abstract

The utility model discloses a horizontal type technical water supply pump shaft seal water retaining box belongs to the water and electricity station technical water supply pump shaft sealing technical field, including box body, the box body includes upper box body and lower box body, the lower box body with the upper box body symmetrical arrangement and together enclose and form a cavity, the both ends of box body are provided with the shaft hole that cooperates with pump shaft, the water baffle is located in the cavity and is along its axial direction arrangement, the drainage groove is located on the lower box body and the drainage groove has the drainage port, locking unit, at least including the first locking mechanism for realizing the connection and locking between the upper box body with the lower box body. The utility model discloses through optimizing the water retaining structure, solved the horizontal type technical water supply pump shaft seal water easy to splash everywhere, no water retaining effect problem, ensured the safe operation of surrounding electrical equipment, increased the equipment life, improved the sealing property and the corrosion resistance, further simplified the maintenance process, reduced the pump downtime.

Description

Technical Field

[0001] This utility model relates to the field of shaft sealing technology for water supply pumps in hydropower stations, specifically to a horizontal shaft seal baffle box for a water supply pump. Background Technology

[0002] In hydropower station technical water supply systems, horizontal technical water supply pumps are key equipment, and the operating condition of their shaft seals directly affects the stability and safety of the entire system. Currently, the high-speed rotation of the shaft seals of horizontal technical water supply pumps easily causes water to splash, and existing equipment generally lacks effective water-blocking mechanisms, resulting in water splashing everywhere, which can easily affect surrounding electrical equipment such as motors. This situation may not only cause electrical faults and safety hazards, but may even lead to personal injury accidents, seriously threatening the safe operation of equipment and the safety of personnel.

[0003] Even though some equipment uses water-blocking devices, there are still obvious defects. Existing water-blocking devices are either loosely structured or prone to leakage due to material aging, allowing water to seep into the bearing housing, leading to lubrication failure, bearing corrosion, and other malfunctions. This significantly shortens the service life of the equipment and increases maintenance costs and downtime.

[0004] Furthermore, existing water baffles mostly employ a single baffle structure, resulting in low water collection efficiency and difficulty in handling the large amount of water splashed out by the high-speed rotation at the shaft seal, leading to poor water-blocking performance. More importantly, the installation and disassembly of existing water baffles are extremely inconvenient. When maintenance is required, the technical water supply pump must be shut down, and the motor and the technical water supply pump must be disassembled. The entire maintenance process is cumbersome and complex, which not only seriously affects the normal operation of the water supply system but also significantly increases pump downtime and reduces equipment operating efficiency.

[0005] To address the aforementioned issues, there is an urgent need for a water-blocking structure that can efficiently intercept and guide water flow through the shaft seal, while also being easy to maintain. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a horizontal water supply pump shaft seal baffle box, aiming to solve the problems of water splashing everywhere and poor water-blocking effect in existing horizontal water supply pump shaft seals. To achieve the above objective, this utility model provides the following technical solution: A horizontal water supply pump shaft seal baffle box, comprising: The box body includes an upper box body and a lower box body, the lower box body and the upper box body are symmetrically arranged and together enclose a cavity; the two ends of the box body are provided with shaft holes that cooperate with the pump shaft; A baffle plate is disposed within the cavity and arranged along its axial direction; A drainage channel is provided on the lower box body and the drainage channel has a drainage outlet; The locking unit includes at least a first locking mechanism for connecting and locking the upper box and the lower box.

[0007] Furthermore, both sides of the upper box are provided with upper mounting ears, and both sides of the lower box are provided with lower mounting ears; the first locking mechanism includes a first electromagnetic adsorption assembly, which includes a first electromagnet, a first power supply, and a first switch. The first electromagnet is installed on one of the upper mounting ears and the lower mounting ears, and the first switch is used to control the connection and disconnection of the first electromagnet and the first power supply.

[0008] Furthermore, the upper mounting ear plate and the lower mounting ear plate are respectively provided with first locking pin holes, and the first locking mechanism further includes a first spring pin assembly for cooperating with the first locking pin hole; the first spring pin assembly includes a baffle and a locking pin rod whose end is fixedly connected to the baffle; a spring is movably sleeved on the surface of the locking pin rod; and an upper washer and a lower washer for limiting the movement of the spring are respectively connected to both ends of the spring.

[0009] Furthermore, the locking unit also includes a second locking mechanism for connecting and locking the housing and the pump shaft seal.

[0010] Furthermore, the left end of the upper box is provided with an upper mounting ear plate, and the left end of the lower box is provided with a lower mounting ear plate; the second locking mechanism includes a second electromagnetic adsorption assembly, which includes a second electromagnet, a second power supply, and a second switch. The second electromagnet is mounted on the upper mounting ear plate and the lower mounting ear plate, and the second switch is used to control the connection and disconnection of the second electromagnet and the second power supply.

[0011] Furthermore, the upper mounting ear plate and the lower mounting ear plate are respectively provided with second locking pin holes, and the second locking mechanism also includes a second spring pin assembly for cooperating with the second locking pin hole; the structure of the second spring pin assembly is the same as the structure of the first spring pin assembly.

[0012] Furthermore, the upper box body has an upper flange at its right end, and the lower box body has a lower flange at its right end.

[0013] Furthermore, both the upper box and the lower box are semi-cylindrical; the inner layer of the upper box and the lower box is an impact-resistant layer; and a sealing gasket is provided between the upper box and the lower box.

[0014] Furthermore, the baffle plate is spiral-shaped, and the angle between the baffle plate and the pump shaft is 15 to 30 degrees.

[0015] Furthermore, the bottom of the drainage trough is funnel-shaped and has inclined drainage holes.

[0016] The beneficial effects of this utility model are: This utility model provides a water baffle box for the shaft seal of a horizontal technical water supply pump. The water baffle box is installed at the point where water is easily splashed from the shaft seal of the horizontal technical water supply pump. By optimizing the water baffle structure, it solves the problem that water easily splashes everywhere and has no water baffle effect in the shaft seal of the horizontal technical water supply pump, ensuring the safe operation of surrounding electrical equipment, increasing the service life of the equipment, and improving sealing and corrosion resistance. It also simplifies the maintenance process, reduces pump downtime, and the modular design is applicable to various pump types. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of this utility model; Figure 2 A three-dimensional structural diagram of the upper box body provided by this utility model from a first perspective; Figure 3 A three-dimensional structural diagram of the upper box body provided by this utility model from a second perspective; Figure 4 A three-dimensional structural diagram of the lower box body provided by this utility model; Figure 5 A three-dimensional structural schematic diagram of the first spring pin assembly provided by this utility model; The attached figures are labeled as follows: 1. Upper housing; 101. Upper mounting ear plate; 102. Upper side mounting ear plate; 103. Upper side flange; 104. First electromagnet; 105. Second electromagnet; 2. Lower housing; 201. Lower mounting ear plate; 202. Lower side mounting ear plate; 203. Lower side flange; 3. Housing; 4. Water baffle; 5. Drainage groove; 501. Inclined drainage hole; 6. Shaft hole; 7. Sealing gasket; 8. Pump shaft; 9. First locking pin hole; 10. Second locking pin hole; 11. Baffle; 12. Locking pin rod; 13. Spring; 14. Upper gasket; 15. Lower gasket. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the following embodiments.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0021] In the description of this utility model, "multiple" means two or more.

[0022] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0023] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0024] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] Example 1 See attached Figures 1-5 This embodiment provides a horizontal technical water supply pump shaft seal baffle box, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a box body 3, a baffle plate 4, a drainage channel 5, and a locking unit, specifically: The housing 3 adopts a split structure, consisting of an upper housing 1 and a lower housing 2. The upper housing 1 and lower housing 2 can be semi-cylindrical in shape and are symmetrically installed on the upper and lower sides of the pump shaft 8. The left side of housing 3 is fitted against the pump shaft seal housing, with the edge of the side plate extending to the pump shaft 8, forming a cylindrical cavity structure. The right side of housing 3 can be connected to a flange, which can be a split flange. An upper flange 103 is located at the right end of the upper housing 1, and a lower flange 203 is located at the right end of the lower housing 2. The upper flange 103 and the lower flange 203 are mated together and fitted against the pump shaft 8, forming a cylindrical structure to intercept splashing water. The inner layer of housing 3 can be made of wear-resistant materials, such as a ceramic coating or a hard alloy coating, to resist high-speed water flow and extend its service life.

[0026] The baffle plate 4 is located inside the upper housing 1 and the lower housing 2 and is arranged along their axial direction. Preferably, the baffle plate 4 is spiral-shaped and tilted at an angle of 15 to 30 degrees to the axial direction of the pump bearing. The baffle plate 4 can be fixed to the inside of the housing 3 by welding to ensure that it will not loosen under the impact of water flow. The baffle plate 4 can convert the centrifugal force of water ejection into axial guiding force, guiding the water flow to the drainage trough 5. The spiral baffle plate 4 can guide the water flow along a specific trajectory through its geometric shape, directly entering the drainage trough 5, while reducing the direct impact of water flow on the inside of the housing 3.

[0027] A drainage channel 5 is provided on the lower box body 2, preferably located directly below the lower box body 2. The drainage channel 5 may have a widened structure, for example, the depth of the drainage channel 5 is 3mm and the width is 5mm.

[0028] The bottom of the drainage trough 5 is funnel-shaped and has an inclined drainage hole 501. The bottom of the inclined drainage hole 501 has a drain outlet, and the inclination angle of the inclined drainage hole 501 can be set to 20 degrees. When the water flows into the drainage trough 5 under the guidance of the baffle plate 4, the water will converge to the bottom of the funnel by gravity and be discharged from the drain outlet through the inclined drainage hole 501, which can effectively prevent water from accumulating in the box 3.

[0029] The locking unit includes at least a first locking mechanism for connecting and locking the upper housing 1 and the lower housing 2. By providing the locking unit in conjunction with the split housing 3, the housing 3 can be easily disassembled without requiring the technical water supply pump to be shut down for replacement, effectively reducing maintenance costs.

[0030] Specifically, the structure of the first locking mechanism is as follows: The upper box 1 has upper mounting ears 101 on both sides, and the lower box 2 has lower mounting ears 201 on both sides. The first locking mechanism includes a first electromagnetic adsorption assembly, which includes a first electromagnet 104, a first power supply, and a first switch. By mounting the first electromagnet 104 on the upper mounting ears 101, and energizing it, the first electromagnet 104, controlled by the first switch, attracts the lower mounting ears 201 of the lower box 2 together. It is understood that the first electromagnet 104 can also be installed in the lower mounting ears 201. A sealing gasket 7 can also be provided between the upper box 1 and the lower box 2 for sealing, for example, a rubber gasket, to prevent water from leaking out of the box 3 through the gaps. The first electromagnet 104 can be a DC electromagnet, and the first power supply can be a 36V DC power supply, consisting of a 36V DC power supply, a switch, and a soldering circuit. The first electromagnet 104 and the first switch can be connected by soldering. Waterproof material can be used to wrap around the solder and the first electromagnet 104. The first electromagnet 104 is controlled by the first switch.

[0031] This invention uses a baffle plate 4 and a drainage trough 5 to concentrate and discharge the splashed water, preventing it from spreading to other areas, reducing splashing onto the motor, and lowering safety hazards. At the same time, the baffle box can be independently disassembled, making installation convenient and allowing for maintenance and replacement without dismantling the entire pump body, significantly shortening pump downtime.

[0032] Example 2 See attached Figures 1-5 Based on Embodiment 1, this embodiment further provides a horizontal technical water supply pump shaft seal baffle box. The difference between this baffle box and the one in Embodiment 1 is that the first locking mechanism also includes a first spring pin assembly. The upper mounting ear plate 101 and the lower mounting ear plate 201 are respectively provided with first locking pin holes 9. The first spring pin assembly is used to cooperate with the first locking pin holes 9 to connect the upper box body 1 and the lower box body 2. The purpose of providing the first spring pin assembly is that when the first electromagnet 104 is de-energized, the box body will not separate under the action of the first spring pin assembly, thus maintaining the integrity of the box body connection. Multiple sets of first locking pin holes 9 and first spring pin assemblies can be provided.

[0033] Specifically, the structure of the first spring pin assembly is as follows: Figure 5As shown, the first spring pin assembly includes a baffle 11 and a locking pin 12 whose end is fixedly connected to the baffle 11. A spring 13 is movably sleeved on the surface of the locking pin 12. An upper washer 14 and a lower washer 15 are respectively connected to both ends of the spring 13 to limit its movement. The purpose of providing the upper washer 14, the lower washer 15 and the baffle 11 on the locking pin 12 is that the upper washer 14 can prevent the spring 13 from falling off the upper end of the locking pin 12, and the lower washer 15 can prevent the spring 13 from extending into the first locking pin hole 9. After the locking pin 12 is inserted, the spring 13 pre-tightens the upper box 1 and the lower box 2 to prevent the box 3 from vibrating. When the first electromagnet 104 is de-energized, the box 3 will not separate under the action of the first spring pin assembly and can still maintain the integrity of the box.

[0034] When connecting the upper box 1 and lower box 2 of the water-blocking box: First, a first electromagnet 104 is installed on the upper mounting ear plate 101. After the first electromagnet 104 is energized, it attracts the lower mounting ear plate 201 of the lower box 2 by controlling the first switch. Then, the locking pin 12 is inserted into the first locking pin hole 9. After it is inserted into place, the locking pin 12 is rotated to a certain angle, such as 90 degrees, so that the baffle 11 can lock the lower mounting ear plate 201 of the lower box 2 to prevent it from being pulled out. When unlocking is required, the locking pin 12 is rotated in the opposite direction so that the baffle 11 is aligned with the first locking pin hole 9, and the locking pin 12 is pulled out directly; then the power is turned off by the first switch so that the first electromagnet 104 on the upper mounting ear plate 101 no longer attracts the lower mounting ear plate 201.

[0035] The above connection method allows for the disassembly of the baffle box without axial movement of the pump body, enabling quick installation and fixation of the baffle box without disassembling the pump shaft 8. Furthermore, the structure allows for a "plug-rotate-lock" and "rotate-pull-separate" process, enabling rapid locking and disassembly of the baffle box.

[0036] Example 3 See attached Figures 1-5 Based on Embodiment 2, this embodiment further provides a horizontal technical water supply pump shaft seal baffle box. The difference between this baffle box and the one in Embodiment 2 is that the locking unit also includes a second locking mechanism for connecting and locking the box body to the pump shaft seal. The structure of the second locking mechanism is largely the same as that of the first locking mechanism, both employing electromagnetic adsorption and spring pin connections.

[0037] Specifically, the left end of the housing is the end connected to the pump shaft seal. An upper mounting ear plate 102 is provided at the left end of the upper housing 1, and a lower mounting ear plate 202 is provided at the left end of the lower housing 2. The second locking mechanism includes a second electromagnetic adsorption assembly, which includes a second electromagnet 105, a second power supply, and a second switch. The second electromagnet 105 is mounted on the upper mounting ear plate 102 and the lower mounting ear plate 202. The second switch controls the connection and disconnection of the second electromagnet 105 and the second power supply. The upper mounting ear plate 102 and the lower mounting ear plate 202 are respectively provided with second locking pin holes 10. The second locking mechanism also includes a second spring pin assembly for engaging with the second locking pin holes 10. Preferably, the second electromagnet 105 is a ring-shaped electromagnet, mounted on the outer periphery of the second locking pin hole 10.

[0038] The housing and pump shaft seal are connected via annular second electromagnets 105 mounted on the upper and lower mounting ears 102 and 202, respectively. A locking pin 12 with a spring 13 is installed inside the second electromagnet 105. When the annular second electromagnet 105 is energized, it magnetically adheres to the pump body on the side of the shaft seal. The locking pin 12, installed inside the annular second electromagnet 105, is inserted into the second locking pin hole 10. Once inserted, the locking pin 12 is rotated by a certain angle, such as 90 degrees, so that the baffle 11 can engage the groove on the pump shaft seal, thus connecting the housing and the side of the pump shaft seal.

[0039] The working process of this utility model is as follows: like Figure 1 As shown, the upper box body 1 and lower box body 2 of the water baffle box are installed at the bearing of the horizontal technical water supply pump. The upper mounting ear plate 101 and the lower mounting ear plate 201 are connected by the first electromagnetic adsorption assembly and the first spring pin assembly. The left side of the box body 3 is connected to the shaft seal of the horizontal technical water supply pump body by the second electromagnetic adsorption assembly and the second spring pin assembly. At the same time, the right side of the box body 3 is connected by upper and lower crescent-shaped flanges. The purpose is that since the box body 3 is installed on the rotating pump shaft 8, the upper and lower crescent-shaped flanges facilitate disassembly and also serve as a seal to ensure good sealing between the rotating pump shaft 8 and the box body 3, preventing water from flowing out of the box body 3 from the right side. The water thrown out by the pump shaft seal enters the interior of the box body 3 through the shaft hole 6. Through the water baffle 4 inside the box body 3, the centrifugal force of the thrown water is converted into radial guiding force. At this time, the water flows along the water baffle 4 inside the box body 3 to the lower part of the box body 3, enters the drainage groove 5, and then enters the funnel by gravity, thereby discharging the water out of the box body 3.

[0040] The water baffle box provided by this utility model can effectively solve the problems of water splashing everywhere, lack of water-blocking effect, and potential safety hazards caused by the shaft seal of horizontal water supply pumps. It has a good water-blocking effect and a long service life.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A horizontal water supply pump shaft seal baffle box, characterized in that, include: The box body (3) includes an upper box body (1) and a lower box body (2). The lower box body (2) and the upper box body (1) are symmetrically arranged and together enclose a cavity. The two ends of the box body (3) are provided with shaft holes (6) that cooperate with the pump shaft (8). A baffle plate (4) is provided in the cavity and arranged along its axial direction; A drainage trough (5) is provided on the lower box body (2) and the drainage trough (5) has a drainage outlet; The locking unit includes at least a first locking mechanism for connecting and locking the upper box (1) and the lower box (2).

2. The horizontal technical water supply pump shaft seal water retaining box according to claim 1, characterized in that: The upper box (1) is provided with upper mounting ear plates (101) on both sides, and the lower box (2) is provided with lower mounting ear plates (201) on both sides; the first locking mechanism includes a first electromagnetic adsorption assembly, which includes a first electromagnet (104), a first power supply and a first switch. The first electromagnet (104) is installed in one of the upper mounting ear plate (101) and the lower mounting ear plate (201), and the first switch is used to control the connection and disconnection of the first electromagnet (104) and the first power supply.

3. The horizontal technical water supply pump shaft seal baffle box according to claim 2, characterized in that: The upper mounting ear plate (101) and the lower mounting ear plate (201) are respectively provided with first locking pin holes (9). The first locking mechanism also includes a first spring pin assembly for cooperating with the first locking pin hole (9). The first spring pin assembly includes a baffle (11) and a locking pin rod (12) whose end is fixedly connected to the baffle (11). A spring (13) is movably sleeved on the surface of the locking pin rod (12). An upper washer (14) and a lower washer (15) for limiting the movement of the spring (13) are respectively connected to both ends of the spring (13).

4. The horizontal technical water supply pump shaft seal water retaining box according to claim 1, characterized in that: The locking unit also includes a second locking mechanism for connecting and locking the housing (3) to the pump shaft seal.

5. A horizontal technical water supply pump shaft seal baffle box according to claim 4, characterized in that: The upper box (1) has an upper mounting ear plate (102) at its left end, and the lower box (2) has a lower mounting ear plate (202) at its left end. The second locking mechanism includes a second electromagnetic adsorption assembly, which includes a second electromagnet (105), a second power supply, and a second switch. The second electromagnet (105) is mounted on the upper mounting ear plate (102) and the lower mounting ear plate (202), and the second switch is used to control the connection and disconnection of the second electromagnet (105) and the second power supply.

6. A horizontal technical water supply pump shaft seal baffle box according to claim 5, characterized in that: The upper mounting ear plate (102) and the lower mounting ear plate (202) are respectively provided with second locking pin holes (10). The second locking mechanism also includes a second spring pin assembly for cooperating with the second locking pin hole (10). The structure of the second spring pin assembly is the same as that of the first spring pin assembly.

7. A horizontal technical water supply pump shaft seal baffle box according to claim 5, characterized in that: The upper box (1) is provided with an upper flange (103) at the right end, and the lower box (2) is provided with a lower flange (203) at the right end.

8. A horizontal technical water supply pump shaft seal baffle box according to claim 1, characterized in that: The upper box (1) and the lower box (2) are both semi-cylindrical; the inner layer of the upper box (1) and the lower box (2) is an impact-resistant layer; a sealing gasket (7) is provided between the upper box (1) and the lower box (2).

9. A horizontal technical water supply pump shaft seal baffle box according to claim 1, characterized in that: The baffle plate (4) is spiral-shaped, and the angle between the baffle plate (4) and the pump shaft (8) is 15 to 30 degrees.

10. A horizontal technical water supply pump shaft seal baffle box according to claim 1, characterized in that: The bottom of the drainage trough (5) is funnel-shaped and has an inclined drainage hole (501).

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