A storage chamber structure of a slurry pump facilitating flushing

Abstract

The utility model relates to the technical field of slurry pump sealing structure, the utility model provides a kind of material storage cavity structure of slurry pump of easy flushing, the shaft head of impeller is set through rear baffle, for with the rotating driving element of outside connection;Mechanical seal box is located on rear baffle, and material storage cavity is formed between mechanical seal box and rear baffle, the gap between the shaft head of impeller and rear baffle is communicated with material storage cavity.Slurry into material storage cavity, solid impurities in it will settle to the bottom of material storage cavity under the action of gravity, realize solid-liquid layering.In the operation process of slurry pump, solid impurities in material storage cavity can be kept in relatively stationary state, and will not continuously rub mechanical seal box because of accumulation in gap, through the above technical scheme, the technical problem that solid particles in slurry in related art are prone to accumulation, leading to the technical problem of early wear failure due to the rapid wear of mechanical seal box.

Description

Technical Field

[0001] The embodiments of this utility model relate to the technical field of slurry pump sealing structure, specifically, to a slurry pump storage chamber structure that is easy to flush. Background Technology

[0002] Mining, power generation, coal processing in coal washing plants, and metal smelting in the metallurgical industry all involve the transportation of large quantities of slurries containing solid particles. As a key piece of equipment specifically designed for such transportation tasks, the performance of slurry pumps directly impacts production efficiency, product quality, and the economic benefits of enterprises. With the continuous development and expansion of various industries, higher requirements are being placed on the reliability, stability, and service life of slurry pumps.

[0003] Slurry pumps are widely used in industries such as mining, power plants, coal washing plants, and metallurgy. Their main function is to stably transport slurry containing solid particles to a designated location. During the operation of a slurry pump, a small amount of leakage is inevitable due to the difficulty of sealing the impeller shaft and the rear liner. To reduce the impact of leakage on equipment operation, a mechanical seal is usually installed on the rear liner to seal the gap between the impeller shaft and the rear liner, thereby reducing slurry leakage and ensuring the normal operation of the slurry pump.

[0004] However, because the medium transported by the slurry pump contains solid particles, these particles tend to accumulate in the sealing area between the impeller shaft and the rear guard plate during long-term operation, leading to rapid wear of the mechanical seal. Once the mechanical seal fails prematurely, a large amount of slurry will leak out, forcing the slurry pump to be stopped immediately for maintenance, which greatly affects production efficiency.

[0005] Therefore, how to solve the problem of solid particle accumulation and wear on the mechanical seal, improve the service life of the mechanical seal, and reduce the number of pump shutdowns and maintenance due to leakage has become an important issue that urgently needs to be addressed in the field of slurry pumps. This is of vital importance to improving the production continuity and economic benefits of related industries. Utility Model Content

[0006] To overcome the above-mentioned defects, the embodiments of this utility model provide a material storage chamber structure for a slurry pump that is easy to flush, which solves the technical problem in the related art that solid particles in the slurry are easy to accumulate, leading to rapid wear and premature failure of the mechanical seal box.

[0007] According to one aspect, at least one embodiment of the present invention provides a slurry pump storage chamber structure that is easy to flush, including a volute, a front guard plate, a rear guard plate, an impeller, and a mechanical seal box. The front guard plate and the rear guard plate are respectively disposed at the front and rear ends of the volute. The impeller is rotatably disposed on the rear guard plate and located inside the volute. The shaft of the impeller passes through the rear guard plate and is disposed for connection with an external rotating drive component. The mechanical seal box is disposed on the rear guard plate, and a storage cavity is formed between the mechanical seal box and the rear guard plate. The gap between the impeller shaft head and the rear guard plate communicates with the storage cavity. The storage cavity is used to store the slurry leaking from the gap, so that solid impurities in the slurry settle to the bottom of the storage cavity and remain stationary.

[0008] For example, in the material storage chamber structure of a slurry pump that is easy to flush, provided in at least one embodiment of this utility model, the following is also included: The bottom of the side wall of the mechanical seal box has a waste discharge hole, and a plug is installed in the waste discharge hole. The waste discharge hole is used to discharge solid impurities that settle at the bottom of the storage chamber before flushing water is introduced into the storage chamber.

[0009] For example, in the material storage chamber structure of a slurry pump that is easy to flush, provided in at least one embodiment of this utility model, the following is also included: The waste discharge hole is a threaded hole and also includes a quick connector. The quick connector can be threaded onto the waste discharge hole and connected to an external water supply component to introduce flushing water into the storage chamber.

[0010] For example, in the material storage chamber structure of a slurry pump that is easy to flush, provided in at least one embodiment of this utility model, the following is also included: It also includes a flushing tube, the end of which has a connecting sleeve for connection with the quick connector.

[0011] For example, in the material storage chamber structure of a slurry pump that is easy to flush, provided in at least one embodiment of this utility model, the following is also included: The inner wall of the mechanical seal box is hinged with a partition, which is located above the solid impurities settling at the bottom of the storage chamber, and is used to prevent the settling solid impurities from being disturbed by the liquid flow.

[0012] For example, in the material storage chamber structure of a slurry pump that is easy to flush, provided in at least one embodiment of this utility model, the following is also included: The partition has a rotating shaft that passes through the side wall of the mechanical seal box and has a handle at its end. The partition can rotate under the drive of the handle and its end abuts against the surface of the rear guard plate to isolate the solid impurities that settle at the bottom of the storage chamber from the liquid above.

[0013] For example, in the material storage chamber structure of a slurry pump that is easy to flush, provided in at least one embodiment of this utility model, the following is also included: The end face of the rear guard plate facing the storage cavity has a limiting plate, which is used to abut against the swing end of the partition.

[0014] For example, in the material storage chamber structure of a slurry pump that is easy to flush, provided in at least one embodiment of this utility model, the following is also included: A rubber strip is provided on the edge of the swing end of the partition, and the rubber strip is used to contact the limiting plate.

[0015] The beneficial effects of the embodiments of this utility model are as follows: In this invention, traditional mechanical seals are prone to wear at the sealing points due to the presence of solid impurities in the conveying medium. This solution changes the approach, no longer aiming for a complete seal between the impeller shaft and the rear guard plate. Instead, the mechanical seal is designed as a dome-shaped structure, allowing leaked slurry to enter the storage chamber. This prevents solid impurities from continuously accumulating in the sealing area between the impeller shaft and the rear guard plate, thus reducing wear on the mechanical seal caused by solid impurities in the slurry.

[0016] When slurry enters the storage chamber, solid impurities settle to the bottom under gravity, achieving solid-liquid stratification. During the operation of the slurry pump, solid impurities in the storage chamber remain relatively stationary, preventing them from accumulating in the gaps and continuously rubbing against the mechanical seal. This significantly reduces the wear on the mechanical seal, ensuring its service life is closer to that of other components and preventing premature wear and failure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the material storage chamber structure of a slurry pump that is easy to flush, according to one embodiment of the present invention. Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 A schematic diagram of the plug structure in the embodiment; Figure 4 for Figure 1 A schematic diagram of the partition structure in the embodiment.

[0019] In the diagram: 1. Volute, 2. Front guard plate, 3. Rear guard plate, 4. Impeller, 5. Mechanical seal box, 6. Material storage chamber, 7. Waste discharge hole, 8. Plug, 9. Quick connector, 10. Flushing pipe, 11. Connecting sleeve, 12. Partition, 13. Handle, 14. Limiting plate, 15. Rubber strip. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0021] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0022] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] like Figures 1-4 The diagram illustrates a flushable slurry pump storage chamber structure according to an embodiment of the present invention, comprising a volute 1, a front guard plate 2, a rear guard plate 3, an impeller 4, and a mechanical seal box 5. The front guard plate 2 and the rear guard plate 3 are respectively installed at the front and rear ends of the volute 1, forming a space together with the volute 1 to accommodate the impeller 4 and the slurry. The impeller 4 is rotatably mounted on the rear guard plate 3 and located inside the volute 1. The shaft end at the center of the impeller 4 penetrates the rear guard plate 3 and is used to connect with an external rotating drive component, such as the output shaft of a motor, via a coupling or other conventional means, thereby enabling the motor to drive the impeller 4. The mechanical seal box 5 is mounted on the rear guard plate 3 and adopts a cover-shaped structure, forming a storage chamber 6 between itself and the rear guard plate 3. The gap between the impeller 4 shaft end and the rear guard plate 3 communicates with the storage chamber 6. When the slurry pump is running, slurry inevitably leaking from this gap will flow directly into the storage chamber 6.

[0027] Working principle: Traditional mechanical seal boxes 5 are prone to wear at the seal due to the presence of solid impurities in the conveying medium. This solution changes the approach, no longer pursuing a complete seal between the impeller 4 shaft head and the rear guard plate 3. Instead, the mechanical seal box 5 is designed as a cover-shaped structure, allowing leaked slurry to enter the storage chamber 6. This prevents solid impurities from continuously accumulating in the sealing area between the impeller 4 shaft head and the rear guard plate 3, reducing wear on the mechanical seal box 5 caused by solid impurities in the slurry.

[0028] The solid impurities in the slurry entering the storage chamber 6 will settle to the bottom of the storage chamber 6 under the action of gravity, achieving solid-liquid stratification. During the operation of the slurry pump, the solid impurities in the storage chamber 6 remain in a relatively static state and will not continuously rub against the mechanical seal 5 due to accumulation in the gaps. This greatly reduces the wear of the mechanical seal 5, ensuring that the service life of the mechanical seal 5 is closer to that of other components and avoiding premature wear and failure.

[0029] In some examples, such as Figure 2 , 3 As shown, a waste discharge hole 7 is provided at the bottom of the side wall of the mechanical seal box 5. The waste discharge hole 7 is a threaded hole. When the slurry pump is running normally, the plug 8 is tightened in the waste discharge hole 7 to prevent slurry leakage from the storage chamber 6. The quick connector 9 can be threaded into the waste discharge hole 7. The other end of the quick connector 9 is used to connect to an external water supply component (i.e., flushing pipe 10). The connecting sleeve 11 at the end of the flushing pipe 10 can be installed on the quick connector 9 to achieve connection with the quick connector 9.

[0030] Working principle: Before flushing and maintaining the storage chamber 6, unscrew the plug 8 from the waste discharge hole 7 to allow solid impurities to drain out. This prevents solid impurities from being agitated within the storage chamber 6 by the water flow when flushing water is directly introduced, thus avoiding wear on the inner wall of the storage chamber 6. By pre-draining solid impurities, favorable conditions are created for subsequent flushing operations.

[0031] After discharging solid impurities, thread the quick connector 9 onto the waste discharge hole 7, and then install the connecting sleeve 11 at the end of the flushing pipe 10 onto the quick connector 9 to connect the flushing pipe 10 and the quick connector 9. At this time, connect the other end of the flushing pipe 10 to an external water supply component, such as a water pipe or water tank. The flushing water flows into the storage chamber 6 through the flushing pipe 10 and the quick connector 9 for flushing.

[0032] After the rinsing water enters the storage chamber 6, it rinses the inner wall of the storage chamber 6 and any remaining impurities. After rinsing is completed, the connection between the rinsing pipe 10 and the external water supply component is disconnected, and the remaining rinsing water in the storage chamber 6 is discharged through the rinsing pipe 10, thus realizing the discharge of wastewater and impurities after rinsing and completing the rinsing and maintenance work of the storage chamber 6.

[0033] In some examples, such as Figures 2-4 As shown, a partition 12 is hinged to the inner wall of the mechanical seal box 5. This partition 12 is located above the settled solid impurities at the bottom of the storage chamber 6, effectively preventing the liquid flow above from disturbing the solid impurities and keeping them stationary. The rotating shaft of the partition 12 passes through the side wall of the mechanical seal box 5. A common sealing structure can be installed at the location where the rotating shaft passes through the mechanical seal box 5 to prevent leakage. A handle 13 is installed at the end of the rotating shaft. The operator can easily rotate the partition 12 around the rotating shaft by turning the handle 13. A conventional slot and pin locking structure is provided between the handle 13 and the outer wall of the mechanical seal box 5. When the partition 12 is rotated to the appropriate position, the handle 13 can be fixed by the locking structure to keep the partition 12 in that position. A limit plate 14 is provided on the end face of the rear guard plate 3 facing the storage chamber 6. When the partition 12 rotates under the drive of the handle 13, its swing end will gradually approach and eventually abut against the limiting plate 14. When the swing end of the partition 12 abuts against the limiting plate 14, the rubber strip 15 can closely contact the limiting plate 14, improve the sealing effect, prevent liquid from leaking from the gap between the two, and ensure effective isolation of solid impurities from the liquid above.

[0034] Working Principle: During the operation of the slurry pump, the liquid in the storage chamber 6 may experience some flow and fluctuations due to external vibrations and other factors. The baffle 12 forms a barrier between solid impurities and the liquid flow above, reducing the direct impact and disturbance of the liquid flow on the solid impurities. Solid impurities accumulate below the baffle 12. Due to the obstruction of the baffle 12, the flow of the liquid above will not easily cause the solid impurities to resuspend or move, thus maintaining the static accumulation state of the solid impurities and reducing their wear on the inner wall of the mechanical seal box 5.

[0035] When it is necessary to drain solid impurities from the bottom of the storage chamber 6, the operator turns the handle 13, causing the baffle 12 to rotate around the rotating shaft. As the baffle 12 rotates, its swing end gradually approaches the limiting plate 14 on the rear guard plate 3 until the rubber strip 15 tightly abuts against the limiting plate 14. At this time, the baffle 12 isolates the solid impurities settled at the bottom of the storage chamber 6 from the liquid above. After opening the plug 8, due to the obstruction of the baffle 12, most of the liquid above will not flow out; only a small amount of liquid mixed with solid impurities below the baffle 12, as well as the solid impurities themselves, will be discharged from the waste discharge hole 7. This effectively reduces the amount of liquid discharged, lowers pollution to the surrounding environment, and also makes it easier to collect the discharged solid impurities and small amount of liquid.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution 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 solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A material storage chamber structure for a slurry pump that is easy to flush, characterized in that, It includes a volute (1), a front guard plate (2), a rear guard plate (3), an impeller (4), and a mechanical seal box (5). The front guard plate (2) and the rear guard plate (3) are respectively disposed at the front and rear ends of the volute (1). The impeller (4) is rotatably disposed on the rear guard plate (3) and located inside the volute (1). The shaft of the impeller (4) passes through the rear guard plate (3) and is used to connect with an external rotating drive component. The mechanical seal box (5) is located on the rear guard plate (3), and a storage cavity (6) is formed between the mechanical seal box (5) and the rear guard plate (3). The gap between the impeller (4) shaft head and the rear guard plate (3) is connected to the storage cavity (6). The storage cavity (6) is used to store the slurry leaking from the gap so that solid impurities in the slurry settle to the bottom of the storage cavity (6) and remain stationary.

2. The material storage chamber structure of a slurry pump with easy flushing according to claim 1, characterized in that, The mechanical seal box (5) has a waste discharge hole (7) at the bottom of its side wall. A plug (8) is provided in the waste discharge hole (7). The waste discharge hole (7) is used to discharge solid impurities that settle at the bottom of the storage chamber (6) before flushing water is introduced into the storage chamber (6).

3. The material storage chamber structure of a slurry pump with easy flushing according to claim 2, characterized in that, The waste discharge hole (7) is a threaded hole and also includes a quick connector (9). The quick connector (9) can be threaded onto the waste discharge hole (7) and connected to an external water supply component to introduce flushing water into the storage chamber (6).

4. The material storage chamber structure of a slurry pump with easy flushing according to claim 3, characterized in that, It also includes a flushing tube (10), the end of which has a connecting sleeve (11) for connection with the quick connector (9).

5. The material storage chamber structure of a slurry pump with easy flushing according to claim 1, characterized in that, The inner wall of the mechanical seal box (5) is hinged with a partition (12), which is located above the solid impurities settling at the bottom of the storage chamber (6) to prevent the settling solid impurities from being disturbed by the liquid flow.

6. The material storage chamber structure of a slurry pump with easy flushing according to claim 5, characterized in that, The rotating shaft of the partition (12) passes through the side wall of the mechanical seal box (5) and has a handle (13) at the end. The partition (12) can rotate under the drive of the handle (13) and make the end abut against the surface of the rear guard plate (3) to isolate the solid impurities that settle at the bottom of the storage chamber (6) from the liquid above.

7. The material storage chamber structure of a slurry pump with easy flushing according to claim 6, characterized in that, The end face of the rear guard plate (3) facing the storage cavity (6) has a limiting plate (14), which is used to abut the swing end of the partition plate (12).

8. The material storage chamber structure of a slurry pump with easy flushing according to claim 7, characterized in that, The edge of the swing end of the partition (12) is provided with a rubber strip (15), which is used to contact the limiting plate (14).

Images