A water-based carbon black slurry delivery pump apparatus

Abstract

The utility model discloses a conveying pump equipment of waterborne carbon black slurry belongs to conveying pump equipment field, including the pump shell, the pump shell is rotationally arranged with the pump shaft, and the both sides of pump shell are provided with the outer cover and sealing device respectively, and the pump shaft is provided with the shaft sleeve through the key connection, and the shaft sleeve is provided with a plurality of impellers through the positioning pin, and the pump shell is provided with the suction pipeline and the discharge pipeline, and the discharge pipeline is provided with the water inlet pipe, and the water inlet pipe is rotationally provided with the flow guide plate, and the pump shell bottom is provided with the blow-off pipe.

Description

Technical Field

[0001] This utility model relates to the field of conveying pump equipment, specifically to a conveying pump equipment for water-based carbon black slurry. Background Technology

[0002] Water-based carbon black slurry has wide applications in many industrial fields, such as coatings, inks, and rubber. In the production processes of these industries, it is necessary to transport the water-based carbon black slurry from storage containers to various processing stages, which necessitates the use of transfer pumps. Currently, the most common water-based carbon black slurry transfer pumps on the market include centrifugal pumps and screw pumps. Centrifugal pumps, due to their simple structure, large flow rate, and high efficiency, have become one of the commonly used devices for transporting water-based carbon black slurry. They achieve transport by using the high-speed rotation of the impeller to give the carbon black slurry centrifugal force.

[0003] Centrifugal pumps face numerous challenges when transporting high-concentration carbon black slurry over extended periods. The pump body and impeller, made of ordinary cast iron, suffer severe wear from the highly abrasive nature of carbon black particles during contact with the slurry. Over time, the impeller surface gradually erodes, altering its shape and impacting pump performance. Impeller deformation or breakage reduces flow rate and head, increases energy consumption, and may even cause pump malfunction, necessitating timely replacement of damaged impellers. However, impeller replacement in existing centrifugal pumps is complex, requiring specialized technicians and significant downtime, increasing maintenance costs and disrupting production continuity.

[0004] The deposition and clogging of carbon black particles is a major challenge for existing transfer pumps when conveying high-concentration carbon black slurry. During the conveying process, carbon black particles easily deposit at the pump inlet and outlet, as well as on the inner wall of the pipeline, forming scale. Over time, the scale becomes thicker, reducing the inner diameter of the pipeline, increasing resistance, and in severe cases, even completely clogging the pipeline. To ensure the normal operation of the pump, the pipeline needs to be cleaned regularly, but cleaning the deposited carbon black particles using existing transfer pumps is complex and requires a significant amount of time and manpower. Utility Model Content

[0005] To address the technical problems of existing water-based carbon black slurry pumps, such as severe impeller wear, difficulty in quick replacement, and difficulty in quickly cleaning pipes blocked by carbon black particle deposits, this utility model provides a water-based carbon black slurry pump device.

[0006] A pump device for conveying water-based carbon black slurry includes a pump casing, a pump shaft rotatably mounted on the pump casing, an outer cover and a sealing device respectively installed on both sides of the pump casing, a shaft sleeve connected to the outside of the pump shaft by a key, a plurality of impellers mounted on the shaft sleeve by a positioning pin, a suction pipe and a discharge pipe communicating with the pump casing, a water inlet pipe provided on the discharge pipe, a guide plate rotatably mounted inside the water inlet pipe, and a sewage pipe provided at the bottom end of the pump casing.

[0007] Furthermore, support blocks are fixedly installed on both sides of the bottom outer wall of the pump casing to support the entire equipment. The sewage pipe is fixedly installed through the bottom wall of the pump casing, and the water inlet pipe is connected to the discharge pipe through a flange. Valves are installed in both the water inlet pipe and the sewage pipe.

[0008] Furthermore, a mounting bracket is fixedly installed on the outer wall of the pump casing, and a drive motor is installed on the mounting bracket. The outer end of the pump shaft is located on the output end of the drive motor, and the inner end of the pump shaft is located inside the pump casing. Valves are installed on both the suction pipe and the discharge pipe.

[0009] Furthermore, the sealing device includes a rotating ring, a stationary ring, and a spring. The rotating ring is mounted on the pump shaft, the stationary ring is mounted on the pump casing, and the spring provides pressure to the rotating and stationary rings. A sealing cavity is provided on the outside of the sealing device, and the sealing cavity is filled with sealing fluid.

[0010] Furthermore, a sealing gasket is installed between the outer cover and the pump casing. The sealing gasket is made of elastic materials such as rubber. The guide plate is installed inside the water inlet pipe by rotating via a rocker arm. The inner wall of the pump casing is lined with ceramic. The impeller is made of high-hardness, wear-resistant alloy material, and the surface of the impeller is coated with a wear-resistant coating.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: The transfer pump equipment, through its unique impeller mounting structure and detachable outer cover inspection port design, enables rapid impeller replacement. This significantly shortens impeller replacement time, reduces downtime caused by impeller wear, and improves production continuity and stability. Simultaneously, the impeller is made of high-hardness, wear-resistant alloy material with a wear-resistant surface coating, and the pump body is lined with a ceramic lining, effectively improving the wear resistance of the impeller and pump casing, and extending the service life of the transfer pump.

[0012] In terms of cleaning deposited carbon black particles, the design of the inlet and outlet pipes, along with the adjustable baffle plate, can quickly and effectively clean the carbon black particles deposited in the pipes and pump casing, avoiding pipe blockage and ensuring the normal operation of the delivery pump. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the structure of this utility model; Figure 2 This is a side view of part of the structure of this utility model; Figure 3This is a schematic diagram of part A of the structure of this utility model; Figure 4 This is a schematic diagram of part B of the structure of this utility model.

[0014] In the diagram: 1. Pump casing; 2. Pump shaft; 3. Outer cover; 4. Sealing device; 5. Shaft sleeve; 6. Locating pin; 7. Impeller; 8. Suction pipe; 9. Discharge pipe; 10. Inlet pipe; 11. Sewage pipe; 12. Guide plate; 13. Support block; 14. Valve; 15. Mounting bracket; 16. Drive motor; 17. Dynamic ring; 18. Stationary ring; 19. Sealing cavity; 20. Sealing gasket; 21. Rocker arm. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0016] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0017] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0018] Furthermore, some of the aforementioned terms, besides indicating location or positional relationships, may also have other meanings. For example, the term "above" may, in certain circumstances, indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances. Additionally, the term "multiple" should mean two or more.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The following will refer to the accompanying drawings. Figures 1-4 The present invention will be described in detail with reference to the embodiments.

[0020] A pump device for conveying water-based carbon black slurry includes a pump casing 1, with an outer cover 3 and a sealing device 4 installed on both sides of the pump casing 1. A sealing gasket 20 is provided between the outer cover 3 and the pump casing 1. The sealing gasket 20 is made of elastic material such as rubber. The outer cover 3 and the pump casing 1 are detachably installed by bolt fasteners. The outer cover 3 can be easily opened, and the impeller 7 can be taken out and installed from the pump casing 1 through the inspection port.

[0021] A pump shaft 2 is rotatably mounted on the pump casing 1. A shaft sleeve 5 is connected to the outside of the pump shaft 2 via a key. Several impellers 7 are mounted on the shaft sleeve 5 via locating pins 6. When it is necessary to replace the impellers 7, first turn off the power to the pump and stop its operation. Then, open the inspection port on the outer cover 3, loosen the locating pins 6 on the shaft sleeve 5, and remove the impellers 7 from the shaft sleeve 5. Next, install the new impellers 7 onto the shaft sleeve 5 and re-secure the locating pins 6. Finally, close the inspection port cover 3 and start the pump to complete the impeller 7 replacement. This design significantly shortens the impeller 7 replacement time, reduces downtime, and improves production efficiency.

[0022] The inner wall of the pump casing 1 is lined with a ceramic lining, and the impeller 7 is made of a high-hardness, wear-resistant alloy material, with a wear-resistant coating sprayed onto its surface. To reduce wear from carbon black particles on the impeller 7 and pump casing 1, this pump has optimized the materials and structure of the impeller 7 and pump casing 1. The impeller 7 uses a high-hardness, wear-resistant alloy material, such as tungsten carbide alloy, which has excellent wear resistance and corrosion resistance, effectively resisting the abrasion of carbon black particles. Simultaneously, the surface of the impeller 7 undergoes special treatment, such as spraying a wear-resistant coating, further improving its wear resistance. The inner wall of the pump casing 1 is also lined with wear-resistant materials, such as a ceramic lining. The ceramic lining has high hardness and good wear resistance, protecting the pump casing 1 from wear by carbon black particles.

[0023] The pump casing 1 is connected to a suction pipe 8 and a discharge pipe 9, both of which are equipped with valves 14. By opening valves 14, water-based carbon black slurry can be drawn into the pump casing 1 through the suction pipe 8 and transported to the discharge pipe 9 by the centrifugal force of the impeller 7, thus realizing the transportation of water-based carbon black slurry.

[0024] An inlet pipe 10 is installed on the discharge pipe 9. A guide plate 12 is rotatably installed inside the inlet pipe 10. A drain pipe 11 is installed at the bottom of the pump casing 1. The inlet pipe 10 is connected to the discharge pipe 9 through a flange. A valve 14 is installed in both the inlet pipe 10 and the drain pipe 11. The guide plate 12 is rotatably installed inside the inlet pipe 10 through a rocker arm 21.

[0025] Close valves 14 on the suction pipe 8 and discharge pipe 9 to stop the delivery of carbon black slurry. Open the valve on the inlet pipe 10 to inject cleaning water into the inlet pipe 10. The other end of the inlet pipe 10 can be directly connected to an external water source. The cleaning water is injected from the inlet pipe 10 of the discharge pipe 9 and flushes the inner wall of the discharge pipe 9 from top to bottom.

[0026] Rotate the rocker arm 21 to rotate the guide plate 12 at different angles, adjusting the angle of the guide plate 12 inside the water inlet pipe 10 so that the cleaning water can better flush all parts of the pipe. After a period of cleaning, open the valve 14 of the drain pipe 11 to discharge the wastewater containing carbon black particles.

[0027] The drain pipe 11 is fixedly installed through the bottom wall of the pump casing 1. The valves 14 of the inlet pipe 10 and the drain pipe 11 are closed, and the valves 14 on the suction pipe 8 and the discharge pipe 9 are opened to restore the delivery of carbon black slurry.

[0028] Support blocks 13 are fixedly installed on both sides of the bottom outer wall of the pump casing 1 to support the entire equipment. A mounting bracket 15 is fixedly installed on the outer wall of the pump casing 1. A drive motor 16 is installed on the mounting bracket 15. The outer end of the pump shaft 2 is installed on the output end of the drive motor 16, and the inner end of the pump shaft 2 is installed inside the pump casing 1. When the drive motor 16 is started, it drives the pump shaft 2 to rotate, which in turn drives several impellers 7 to perform centrifugal rotation.

[0029] The sealing device 4 includes a rotating ring 17, a stationary ring 18, and a spring. The rotating ring 17 is mounted on the pump shaft 2, and the stationary ring 18 is mounted on the pump housing 1. The spring provides pressure for the rotating ring 17 and the stationary ring 18. The sealing device 4 has a sealing cavity 19 on its exterior, which is filled with sealing fluid.

[0030] To prevent carbon black slurry leakage, this transfer pump employs a reliable sealing device 4. The sealing device 4 is installed between the pump shaft 2 and the pump casing 1. A moving ring 17 is mounted on the pump shaft 2 and rotates with it; a stationary ring 18 is mounted on the pump casing 1 and fits tightly against the moving ring 17 to form a sealing surface. A spring provides sufficient pressure to ensure a good seal between the moving ring 17 and the stationary ring 18. Additionally, a sealing cavity 19 is provided outside the sealing device 4, filled with sealing fluid to further enhance the sealing performance.

[0031] A sealing gasket 20 is also provided between the outer cover 3 and the pump housing 1. The sealing gasket 20 is made of elastic materials such as rubber, which can effectively prevent carbon black slurry from leaking from the connection between the outer cover 3 and the pump housing 1.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pumping device for conveying aqueous carbon black slurry, comprising a pump casing (1), characterized in that: A pump shaft (2) is rotatably mounted on the pump casing (1). An outer cover (3) and a sealing device (4) are respectively installed on both sides of the pump casing (1). A shaft sleeve (5) is connected to the outside of the pump shaft (2) by a key. Several impellers (7) are mounted on the shaft sleeve (5) by a positioning pin (6). A suction pipe (8) and a discharge pipe (9) are connected to the pump casing (1). A water inlet pipe (10) is mounted on the discharge pipe (9). A guide plate (12) is rotatably mounted inside the water inlet pipe (10). A sewage pipe (11) is mounted at the bottom of the pump casing (1).

2. The pumping device for conveying aqueous carbon black slurry according to claim 1, characterized in that: Support blocks (13) are fixedly installed on both sides of the bottom outer wall of the pump casing (1) to support the entire equipment. The sewage pipe (11) is fixedly installed through the bottom wall of the pump casing (1). The water inlet pipe (10) is connected to the discharge pipe (9) through a flange. Valves (14) are installed in both the water inlet pipe (10) and the sewage pipe (11).

3. The pumping device for conveying aqueous carbon black slurry according to claim 1, characterized in that: A mounting bracket (15) is fixedly installed on the outer wall of the pump casing (1). A drive motor (16) is installed on the mounting bracket (15). The outer end of the pump shaft (2) is installed on the output end of the drive motor (16), and the inner end of the pump shaft (2) is installed inside the pump casing (1). Valves (14) are installed on both the suction pipe (8) and the discharge pipe (9).

4. The pumping device for conveying aqueous carbon black slurry according to claim 3, characterized in that: The sealing device (4) includes a rotating ring (17), a stationary ring (18) and a spring. The rotating ring (17) is mounted on the pump shaft (2), and the stationary ring (18) is mounted on the pump housing (1). The spring provides pressure to the rotating ring (17) and the stationary ring (18). A sealing cavity (19) is provided on the outside of the sealing device (4), and the sealing cavity (19) is filled with sealing fluid.

5. The pumping device for conveying aqueous carbon black slurry according to claim 4, characterized in that: A sealing gasket (20) is provided between the outer cover (3) and the pump casing (1). The sealing gasket is made of elastic materials such as rubber. The guide plate (12) is rotated and installed in the water inlet pipe (10) by the rocker arm (21). The inner wall of the pump casing (1) is lined with ceramic. The impeller (7) is made of high hardness and wear-resistant alloy material. The surface of the impeller (7) is coated with a wear-resistant coating.

Images