Slurry mixer

Abstract

The utility model provides a slurry mixer. The slurry mixer comprises a motor and a mixing shaft, wherein the upper end of the mixing shaft is in transmission connection with the motor; an impeller is hinged to the lower portion of the stirring shaft, an adjusting supporting rod is hinged to the impeller, and the end, away from the impeller, of the adjusting supporting rod is hinged to a first sliding block on the stirring shaft; wherein a first sliding groove is formed in the position, above the impeller, of the stirring shaft, and the first sliding block is connected into the first sliding groove in a sliding mode. The slurry mixer provided by the utility model can solve the problems of poor safety and low efficiency of the maintenance scheme of the existing mixer.

Description

Technical Field

[0001] The utility model relates to the technical fields of steelmaking continuous casting and rolling, and more specifically, to a slurry mixer. Background Art

[0002] In the subsequent treatment of turbid water in steelmaking continuous casting and rolling projects, the slurry mixer (a kind of slurry treatment facility) mainly functions to prevent sludge precipitation, thereby preventing blockage of the suction pipe of the slurry pump due to too high slurry concentration and siltation in the sludge tank, etc.

[0003] The traditional slurry mixer usually drives the reducer to rotate by an electric motor, and the reducer then transmits the power to the stirring shaft to make the stirring shaft rotate at an appropriate speed. Stirring blades are installed on the stirring shaft, and the rotation of the blades produces a strong stirring effect on the liquid in the tank, causing the liquid to flow and mix. The design of the stirring blades enables them to lift the liquid when rotating and drop the liquid under the action of gravity. During this process, the liquid obtains kinetic energy and generates a circulating flow. When the mixer is working, the stirring force of the blades on the liquid, the centrifugal force of the liquid, and the action of gravity jointly form a dynamic balance, enabling the liquid to be fully mixed and stirred in the tank.

[0004] With the continuous progress of technology, modern slurry mixers have become more and more advanced and have more and more complete functions. Modern slurry mixers usually have high production efficiency, reliability, and energy conservation. Its frame is the main structure of the equipment, welded by steel, with high strength and good rigidity, and can withstand complex working environments and high-intensity working requirements. In addition, modern slurry mixers are also equipped with advanced electric motors and reducers. The electric motor is the power source of the slurry mixer. Through the conversion of the reducer, the high-speed rotation of the electric motor is converted into an appropriate low-speed torque output, enabling the stirrer to mix raw materials and achieve the expected effect.

[0005] However, whether it is a traditional mixer or a modern mixer, since it is in the slurry tank, maintenance is very inconvenient. Generally, the slurry tank is 3 - 5m deep, the impeller of the mixer is below the pool surface, and there is usually an opening with a diameter less than 800mm left on the pool top for connecting the electric motor and the impeller main shaft. Once the impeller fails, it is not easy to replace and maintain the impeller with a diameter of 2.5 - 3m, seriously affecting the slurry treatment efficiency.

[0006] In order to improve the slurry treatment efficiency, the existing technology is to make the slurry tank semi-open, which is convenient for observing and maintaining the mixer impeller; the semi-open slurry tank refers to a slurry tank with the top part open and the tank body part covered. This type of slurry tank usually needs to be equipped with guardrails or covers on the tank top to prevent personnel and materials from falling into the tank. The semi-open slurry tank still has the following disadvantages in actual production:

[0007] 1. Low safety: Since part of the semi-open mud pool is open, it is easy for debris and people to fall into the pool, which brings certain safety hazards. Safety measures such as guardrails or covers need to be installed to ensure the safety of personnel and materials.

[0008] 2. Poor sanitary conditions: Part of the semi-open mud pool is exposed to the external environment and is easily affected by weather and environment, such as wind, rain, and sunlight. These factors may cause the mud inside the mud pool to deteriorate and rot, thereby generating odor and polluting the environment. Appropriate sanitary measures need to be taken, such as installing rain shelters, regular cleaning and disinfection, etc.

[0009] 3. Difficulty in maintenance: Semi-open mud pools need to be cleaned and maintained frequently, such as regularly cleaning debris and mud in the pool, checking the operation of the equipment, etc. Since the pool is partially open, it may cause inconvenience and safety hazards to maintenance personnel, and corresponding safety measures need to be taken.

[0010] 4. Limited adaptability: Semi-open mud pools have limited adaptability to different materials. For some special materials or formulas, different mixing methods and equipment may be required. In addition, semi-open mud pools also have certain limitations for use under different climatic and geographical conditions, and need to be designed and adjusted according to specific conditions.

[0011] Based on the above technical problems, there is an urgent need for a solution that has high operational safety and is easy to repair the mixer impeller. Utility Model Content

[0012] In view of the above problems, the purpose of the utility model is to provide a mud mixer to solve the problems of poor safety and low efficiency of the existing maintenance solutions for the mixer.

[0013] The mud mixer provided by the utility model comprises a motor and a stirring shaft with a transmission connection to the motor at the upper end; an impeller is hinged at the lower part of the stirring shaft, an adjusting support rod is hinged on the impeller, and one end of the adjusting support rod away from the impeller is hinged to a first sliding block on the stirring shaft; wherein a first sliding groove is provided on the stirring shaft at a position above the impeller, and the first sliding block is slidably connected in the first sliding groove.

[0014] In addition, a preferred structure is that an upper buckle matched with the first sliding block is provided at the upper end of the first sliding groove, and a lower buckle matched with the first sliding block is provided at the lower end of the first sliding groove.

[0015] In addition, a preferred structure is that a first compression spring is provided on the stirring shaft, and the first sliding block is connected to the output end of the first compression spring.

[0016] In addition, a preferred structure is that a second sliding groove is formed in the impeller, a second sliding block is slidably connected in the second sliding groove, and one end of the adjusting support rod away from the stirring shaft is hinged to the second sliding block.

[0017] In addition, a preferred structure is that a first connecting ear and a second connecting ear are respectively hinged to the upper and lower ends of the adjusting support rod, the first connecting ear is connected to the first sliding block, and the second connecting ear is connected to the second sliding block.

[0018] In addition, a preferred structure is that a second compression spring is arranged on the impeller, and the second sliding block is connected to the output end of the second compression spring.

[0019] In addition, a preferred structure is that a driving mechanism is arranged on the stirring shaft, and the output end of the driving mechanism is connected to the first sliding block.

[0020] In addition, a preferred structure is that at least two impellers are arranged on the stirring shaft; and,

[0021] The impellers are evenly distributed on the stirring shaft.

[0022] In addition, a preferred structure is that the adjusting support rod includes a first section, a second section, and an adjusting mechanism connected between the first section and the second section; wherein,

[0023] The adjusting mechanism includes a telescopic cylinder, and two ends of the telescopic cylinder are respectively connected to the first section and the second section.

[0024] In addition, a preferred structure is that a speed reducer is connected to the motor, and the speed reducer is connected to the stirring shaft through a coupling.

[0025] Compared with the prior art, the above-mentioned mud mixer according to the present invention has the following beneficial effects:

[0026] The mud mixer provided by the present invention is provided with an impeller hinged to the stirring shaft, and both ends of the adjusting support rod are respectively hinged to the impeller and the first sliding block on the stirring shaft. During actual use, the impeller can be retracted and extended by the up and down movement of the first sliding block in the first sliding groove. When the impeller is retracted flat to be almost flush with the stirring shaft, the stirring shaft and the impeller of the mud mixer under the pool surface can be drawn out along the 800 mm opening on the pool surface (as described in the background art) for maintenance and replacement; the convenience and safety of the maintenance work of the mud mixer can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other objects and results of the present utility model will become more apparent and easier to understand by referring to the following description in conjunction with the accompanying drawings and the content of the claims, and with a more comprehensive understanding of the present utility model.

[0028] In the accompanying drawings:

[0029] Figure 1 The front view of the impeller in the mud mixer provided for the embodiment of the present utility model when it is in the open state;

[0030] Figure 2 The partial enlarged view of the impeller in the mud mixer provided for the embodiment of the present utility model when it is in the open state;

[0031] Figure 3 The front view of the impeller in the mud mixer provided for the embodiment of the present utility model when it is in the closed state;

[0032] Figure 4 The partial enlarged view of the impeller in the mud mixer provided for the embodiment of the present utility model when it is in the closed state;

[0033] Figure 5 The enlarged view of the adjusting support rod in the mud mixer provided for the embodiment of the present utility model;

[0034] Reference numerals: motor 1, reducer 2, coupling 3, mixing shaft 5, upper buckle 6, first compression spring 7, lower buckle 8, impeller 9, adjusting support rod 10, retainer 11, first connecting ear 13, second connecting ear 14, adjusting mechanism 15.

[0035] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed implementation manners

[0036] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is obvious that these embodiments can also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for the purpose of facilitating the description of one or more embodiments.

[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] Figure 1 The front view structure when the impeller in the mud mixer provided by the embodiment of the present utility model is in the open state is shown. Figure 2 The partial enlarged structure when the impeller in the mud mixer provided by the embodiment of the present utility model is in the open state is shown. Figure 3 The front view structure when the impeller in the mud mixer provided by the embodiment of the present utility model is in the closed state is shown. Figure 4 The partial enlarged structure when the impeller in the mud mixer provided by the embodiment of the present utility model is in the closed state is shown. Figure 5 The enlarged structure of the adjusting support rod in the mud mixer provided by the embodiment of the present utility model is shown.

[0039] Combined with Figures 1 to 5 As commonly shown, the mud mixer provided by the embodiment of the present utility model includes a motor 1 as the main driving mechanism and a stirring shaft 5. The output shaft of the motor 1 is connected to a speed reducer 2, and the output shaft of the speed reducer 2 is connected to the upper end of the stirring shaft 5 through a coupling 3. The motor 1 provides power, and drives the stirring shaft 5 to rotate through the cooperation of the speed reducer 2 and the coupling 3, thereby realizing the transmission connection between the stirring shaft 5 and the motor 1.

[0040] A fixator 11 is connected to the (middle) lower part of the stirring shaft 5. An impeller 9 is hinged to the fixator 11. The impeller 9 is used to extend below the mud pool surface to stir the mud. An adjusting support rod 10 is rotatably connected (hinged) to the impeller 9. The adjusting support rod 10 is used to support and drive the impeller 9 to realize the conversion between the propped state and the tightened state of the impeller 9. One end of the adjusting support rod 10 away from the impeller 9 is hinged to a first slider (not shown in the figure) on the stirring shaft 5. Moreover, a first chute is provided at a position above the impeller 9 on the stirring shaft 5 and is arranged along the axial direction of the stirring shaft 5. The first slider is arranged in the first chute (not shown in the figure) and can slide up and down in the first chute.

[0041] During the actual use process, by driving the first slider to move up and down in the first chute, the retraction and extension of the impeller 9 can be realized. As the first slider moves upward, when the impeller 9 is retracted flat to be almost flush with the axial direction of the stirring shaft 5, the stirring shaft 5 and the impeller 9 of the mud mixer below the pool surface can be drawn out along the 800-mm opening on the pool surface (as in the background art) for maintenance and replacement. This can significantly improve the convenience and safety of the maintenance work of the mud mixer.

[0042] In addition, to position the first slider, an upper buckle 6 adapted to the first slider can be provided at the upper end of the first chute (the position marked 6 in the figure is the position of the upper buckle), and a lower buckle 8 adapted to the first slider can be provided at the lower end of the first chute (the position marked 8 in the figure is the position of the lower buckle). When the first slider is limited on the upper buckle 6, the impeller 9 is stably in the tightened state. At this time, the stirring shaft 5 and the impeller 9 of the mud mixer below the pool surface can be drawn out along the 800-mm opening on the pool surface for maintenance and replacement. When the first slider is limited on the lower buckle 8, the impeller 9 is stably in the propped state (supported by the adjusting support rod 10). At this time, the motor 1 can drive the stirring shaft 5 and the impeller 9 to stir the mud.

[0043] In an optional embodiment of the present utility model, a first compression spring 7 in a compressed state can be sleeved on the stirring shaft 5, and the first slider needs to be connected to the output end of the first compression spring 7. Through this setting method, when the impeller 9 is below the mud pool surface, the adjusting support rod 10 can stably support the impeller 9 by relying on the elastic force provided by the first compression spring 7 and provide a certain buffer force for the impeller 9, thereby improving the service life of the impeller 9.

[0044] In another alternative embodiment of the present utility model, a second sliding groove (not shown in the figure) extending along the extension direction of the impeller 9 may also be provided on the impeller 9, and a second sliding block (not shown in the figure) is arranged in the second sliding groove. The second sliding block is slidably connected in the second sliding groove, and one end of the adjusting support rod 10 away from the stirring shaft 5 needs to be hinged to the second sliding block. Through this setting method, the required degrees of freedom for the rotation of both ends of the adjusting support rod 10 can be provided, preventing jamming phenomena from occurring during the rotation of both ends of the adjusting support rod 10.

[0045] Of course, based on the same principle, a second compression spring (not shown in the figure) in a compressed state may also be provided on the impeller 9, and the second sliding block is connected to the output end of the second compression spring. Through this setting method, when the impeller 9 is below the mud pool surface, the elastic force provided by the second compression spring can be relied on to stably support the impeller 9 by the adjusting support rod 10, and a certain buffering force can be provided for the adjusting support rod 10, thereby improving the service life of the adjusting support rod 10; at the same time, since the second compression spring is an elastic component rather than a rigid component, it can be reversely compressed to a certain extent. Therefore, it does not affect the degrees of freedom required for the rotation of both ends of the adjusting support rod 10.

[0046] In addition, in order to realize the hinged connection of both ends of the adjusting support rod 10 with the first sliding block and the second sliding block respectively, a first connecting ear 13 and a second connecting ear 14 may be hinged at the upper and lower ends of the adjusting support rod 10 respectively. The first connecting ear 13 is connected to the first sliding block, and the second connecting ear 14 is connected to the second sliding block, thereby realizing the connection of both ends of the adjusting support rod 10.

[0047] It should be noted that usually, since the impeller 9 is below the mud pool surface, it is not convenient to manually adjust the vertical position of the first sliding block. In order to realize the vertical position adjustment of the first sliding block, a driving mechanism (such as a driving cylinder) may be provided on the stirring shaft 5, and the output end of the driving mechanism is connected to the first sliding block. The driving mechanism drives the first sliding block to move up and down in the first sliding groove, thereby realizing the tightening and lifting of the impeller 9.

[0048] In a preferred embodiment of the present utility model, the retracting and extending effect on the impeller 9 can be further improved by adjusting the length of the adjusting support rod 10. Specifically, the adjusting support rod 10 may include a first section (not marked in the figure), a second section (not marked in the figure), and an adjusting mechanism 15 connected between the first section and the second section; the length of the adjusting mechanism 15 is adjustable, thereby realizing the adjustment of the length of the entire adjusting support rod 10; for example, the adjusting mechanism 15 may include a telescopic cylinder, and both ends of the telescopic cylinder are respectively connected to the first section and the second section, and the length of the entire adjusting support rod 10 is adjusted by adjusting the extending length of the telescopic cylinder.

[0049] In addition, to improve the stirring effect of the mud mixer provided by the present utility model, multiple (at least two) impellers 9 are usually required to be arranged on the stirring shaft 5; moreover, it is necessary to ensure that the impellers 9 are evenly distributed or symmetrically distributed on the stirring shaft 5, so as to improve the stirring effect of the mud mixer.

[0050] As described above with reference to Figures 1 to 5 The mud mixer according to the present utility model has been described by way of example. However, those skilled in the art should understand that various improvements can be made to the above-mentioned mud mixer proposed by the present utility model without departing from the content of the present utility model. Therefore, the protection scope of the present utility model should be determined by the content of the appended claims.

Claims

1. A mud mixer, comprising a motor and a stirring shaft whose upper end is connected to the motor in a transmission manner; characterized in that: An impeller is hinged at the lower part of the stirring shaft, an adjustment support rod is hinged on the impeller, and one end of the adjustment support rod away from the impeller is hinged to the first sliding block on the stirring shaft; wherein, A first slide groove is provided on the stirring shaft at a position above the impeller, and the first sliding block is slidably connected in the first slide groove.

2. The mud mixer according to claim 1, characterized in that: An upper buckle matched with the first sliding block is arranged at the upper end of the first sliding slot, and a lower buckle matched with the first sliding block is arranged at the lower end of the first sliding slot.

3. The mud mixer according to claim 2, characterized in that: A first compression spring is arranged on the stirring shaft, and the first sliding block is connected to the output end of the first compression spring.

4. The mud mixer according to claim 3, characterized in that: A second sliding groove is provided on the impeller, a second sliding block is slidably connected in the second sliding groove, and one end of the adjusting support rod away from the stirring shaft is hinged to the second sliding block.

5. The mud mixer according to claim 4, characterized in that: A first connecting ear and a second connecting ear are hinged at the upper and lower ends of the adjusting support rod, respectively. The first connecting ear is connected to the first sliding block, and the second connecting ear is connected to the second sliding block.

6. The mud mixer according to claim 5, characterized in that: A second compression spring is arranged on the impeller, and the second sliding block is connected to the output end of the second compression spring.

7. The mud mixer according to claim 6, characterized in that: A driving mechanism is arranged on the stirring shaft, and an output end of the driving mechanism is connected to the first sliding block.

8. The mud mixer according to claim 1, characterized in that: At least two impellers are provided on the stirring shaft; and The impellers are evenly distributed on the stirring shaft.

9. The mud mixer according to any one of claims 1 to 8, characterized in that: The adjusting support rod comprises a first segment, a second segment and an adjusting mechanism connected between the first segment and the second segment; wherein, The adjusting mechanism comprises a telescopic cylinder, and two ends of the telescopic cylinder are respectively connected to the first segment and the second segment.

10. The mud mixer according to claim 1, characterized in that: The motor is connected with a reducer, and the reducer is connected with the stirring shaft through a coupling.

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