A suspension mixing-out structure

Abstract

The utility model relates to the technical field of suspension stirring, and particularly relates to a discharging structure for uniformly mixed suspension, which comprises a stirring tank, a feeding pipe for feeding is communicated with the top of the stirring tank, a discharging pipe for discharging is communicated with the side wall of the stirring tank, a control valve is arranged in the discharging pipe, a motor is fixedly connected to the top of the stirring tank, a hollow rod is rotatably connected to the inner wall top of the stirring tank, the top end of the hollow rod penetrates through the top of the stirring tank, a belt is arranged between the output end of the motor and the top end of the hollow rod through a pulley sleeve, and a lifting mechanism for lifting the accumulated material between the bottom of the stirring tank and the inside of the discharging pipe to the inside of the stirring tank is arranged in the hollow rod. Compared with the prior art, the helical rod generates a helical propulsion force when rotating, the particles in a stationary or semi-stationary state are transported upward along the axial direction, the particles are fully rolled up and mixed into the overall liquid in the stirring tank, and the problems of stirring blind area or local high concentration are avoided.

Description

Technical Field

[0001] This utility model relates to the field of suspension stirring technology, and in particular to a discharge structure for a suspension after it has been mixed. Background Technology

[0002] Currently, suspensions are a common form of liquid formulation in the liquid ingredient or liquid preparation processes of the pharmaceutical, food, and chemical industries. Suspensions are typically composed of a liquid matrix and sparingly soluble solid particles. To ensure uniform distribution of the solid particles in the liquid, a stirring mechanism is usually installed in the storage tank. The rotating motion of the stirring paddle mixes the materials, suspending the solid particles in the liquid and forming a uniform suspension. However, in actual production, the structural design between the bottom of the storage tank and the discharge pipe is relatively simple, and there is often a certain recessed space or transition section between the tank bottom and the discharge port. This results in poor material flowability in this area, making it difficult for the stirring paddle to move the material.

[0003] Chinese patent publication number CN219765127U discloses a device body with an upper cover. The upper cover has an electric motor, and the lower drive shaft of the electric motor rotates through the upper cover and has a main gear fixed at the bottom. A secondary gear meshes with one side of the main gear. The lower ends of the main gear and the secondary gear are respectively provided with a main stirring shaft and an auxiliary stirring shaft. A gear ring meshes with the outer side of the secondary gear. A feeding port is provided on one side of the upper cover. A cover plate is flipped on the feeding port, and mounting holes are provided on the edge of the cover plate.

[0004] While this mixer can achieve omnidirectional mixing of the device body and ensure the uniformity of the suspension, there is often a structural depression or transition section between the bottom of the device body and the discharge pipe. During material placement or mixing, solid particles in the suspension at the bottom of the storage tank tend to settle and accumulate in this depression. This prevents the deposited material from being fully stirred and mixed by the agitator. Because the internal area of ​​the discharge pipe near the storage tank cannot form effective flow circulation, the material in this area remains in a static or semi-static state, creating a mixing blind zone. As a result, the overall mixing of the suspension is uneven, with locally high drug particle concentrations, affecting product quality and efficacy stability. Furthermore, during discharge, the material deposited in the depression is discharged first, causing inconsistent discharge concentrations and affecting production continuity. Therefore, there is an urgent need for a suspension mixing structure that can prevent material deposition and improve mixing uniformity. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a discharge structure for a suspension after it has been mixed, so as to solve the problem that solid particles in the suspension at the bottom of the storage tank tend to settle and accumulate in the depression, making it impossible for these deposited materials to be fully stirred up and mixed by the stirring paddle.

[0006] To achieve the above objectives, this utility model provides a discharge structure for a mixed suspension, including a mixing tank. The top of the mixing tank is connected to a feed pipe for feeding, and the side wall of the mixing tank is connected to a discharge pipe for discharging. A control valve is installed inside the discharge pipe. A motor is fixedly connected to the top of the mixing tank. A hollow rod is rotatably connected to the top of the inner wall of the mixing tank. The top end of the hollow rod passes through the top of the mixing tank. A belt is provided between the output end of the motor and the top end of the hollow rod through a pulley. A lifting mechanism is installed inside the hollow rod for lifting the material accumulated between the bottom of the mixing tank and the inside of the discharge pipe into the mixing tank. Support plates are fixedly connected to both sides of the outer wall of the hollow rod, and a vertical plate is fixedly connected to one end of the support plate. The interior of the vertical plate is provided with a scraping mechanism for scraping the material from the inner wall of the mixing tank during discharge.

[0007] Preferably, the lifting mechanism includes a control rod rotatably connected to the top of the inner wall of the hollow rod. The top end of the control rod protrudes from the top of the hollow rod, and a threaded block is fixedly connected to the bottom of the control rod. A threaded groove is formed on the top of the inner wall of the hollow rod. The threaded block and the hollow rod are threaded together, allowing the threaded block to move axially along the hollow rod. A limit block is fixedly connected to the inner wall of the hollow rod near the bottom of the threaded block. The bottom of the threaded block passes through the bottom of the limit block and is rotatably connected to a lifting rod. The lifting rod is slidably connected to the inner wall of the hollow rod, and a spiral rod for extending into the inlet / outlet pipe is fixedly connected to the bottom end of the lifting rod.

[0008] Preferably, the scraping mechanism includes a guide plate slidably connected inside the support plate, the guide plate passing through the interior of the vertical plate and fixedly connected to an mounting plate, a rubber scraper fixedly connected to the side wall of the mounting plate, and arc-shaped blocks fixedly connected to both sides of the outer wall of the lifting rod. The end of the guide plate near the hollow rod passes through the hollow rod, and one end of the guide plate is arc-shaped.

[0009] Preferably, a spiral plate is fixedly connected to the outer wall of the hollow rod. The spiral plate spirals along the axial direction of the hollow rod. When the hollow rod rotates, the spiral plate rotates accordingly and lifts and stirs the material at the bottom of the mixing tank.

[0010] Preferably, the outer wall of the hollow rod is fixedly connected with a plurality of equally spaced and uniformly distributed support rods, and a stirring plate is fixedly connected to the end of each support rod away from the hollow rod. The side wall of the stirring plate is provided with a plurality of equally spaced and uniformly distributed leakage holes.

[0011] Preferably, a first sealing ring is fixedly connected at the connection between the lifting rod and the screw rod, and the outer wall of the first sealing ring is attached to the inner wall of the hollow rod, thereby forming a sealing fit between the first sealing ring and the interior of the hollow rod.

[0012] Preferably, multiple springs are fixedly connected between the opposing surfaces of the mounting plate and the vertical plate. When the guide plate drives the mounting plate and the rubber scraper to move towards the inner wall of the mixing tank, the rubber scraper adheres to the inner wall of the mixing tank, and the mounting plate stretches the springs.

[0013] Preferably, a second sealing ring is fixedly connected to the outer wall of the mounting plate, and the outer wall of the second sealing ring is in contact with the inner wall of the vertical plate, thereby forming a sealing fit between the interior of the mounting plate and the vertical plate.

[0014] The beneficial effects of this utility model are: 1. The discharge structure of this suspension after mixing utilizes an lifting mechanism to effectively lift the suspension material deposited in the discharge pipe and its bottom depression into the mixing tank via a screw rod. This achieves the recovery and uniform dispersion of the settled particles in the suspension. The screw rod generates a spiral propulsion force during rotation, conveying stationary or semi-stationary particles axially upwards. Simultaneously, the material in the gap between the screw rod and the liquid experiences disturbance and shearing, ensuring the particles are fully rolled up and mixed into the overall liquid within the mixing tank. This avoids problems such as blind spots in mixing or excessively high local concentrations. This lifting mechanism not only solves the problem of easy sedimentation at the connection between the bottom of the storage tank and the discharge pipe, preventing excessively high drug particle concentrations in local areas that could affect product quality and efficacy stability, but also continuously drives the circulation of the bottom material during mixing, ensuring the overall uniformity of the suspension and thus improving its quality stability.

[0015] 2. The discharge structure after the suspension is mixed, through the linkage design of the guide plate, mounting plate and rubber scraper, allows the material adhering to the suspension on the inner wall of the mixing tank to be scraped off in a timely manner. During the discharge or cleaning stage, the rubber scraper is in close contact with the tank wall, which can effectively peel off solid particles from the surface of the tank wall and return them to the inside of the mixing tank, preventing material residue from affecting the next mixing or discharge process. At the same time, the guide plate is driven to slide by the reverse control rod to realize the extension and contact of the rubber scraper, ensuring that it does not come into contact with the tank wall during mixing, avoiding interference with the flow of the suspension, reducing wear between the rubber scraper and the mixing tank. This scraping mechanism can eliminate the deposits on the tank wall, improve the material utilization rate, and ensure the overall uniformity and stability of the suspension, providing high-quality assurance for discharge and filling, reducing cleaning and maintenance costs, and improving production efficiency and equipment reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the mixing tank of this utility model; Figure 3 This is a three-dimensional structural diagram of the stirring plate and the perforation of this utility model; Figure 4 This is a schematic diagram of the planar structure of the lifting mechanism of this utility model; Figure 5 This is a three-dimensional structural diagram of the mounting plate and rubber scraper of this utility model.

[0018] The diagram is marked as follows: 1. Mixing tank; 2. Feed pipe; 3. Discharge pipe; 4. Control valve; 5. Motor; 6. Hollow rod; 7. Belt; 8. Control rod; 9. Threaded block; 10. Limit block; 11. Lifting rod; 12. Spiral rod; 13. Support plate; 14. Vertical plate; 15. Guide plate; 16. Mounting plate; 17. Rubber scraper; 18. Spiral plate; 19. Support rod; 20. Mixing plate; 21. Leakage hole; 22. First sealing ring; 23. Spring; 24. Second sealing ring; 25. Arc block. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] like Figures 1 to 5 As shown, a discharge structure for a mixed suspension includes a mixing tank 1, with a feed pipe 2 connected to its top for feeding and a discharge pipe 3 connected to its side wall for discharging. A control valve 4 is installed inside the discharge pipe 3 to control the discharge of the suspension. A motor 5 is fixedly connected to the top of the mixing tank 1. The output end of the motor 5 is connected to the top of a hollow rod 6 via a belt 7 and a pulley. The hollow rod 6 is rotatably mounted on the inner wall of the top of the mixing tank 1. A lifting mechanism is installed inside the hollow rod 6 to lift the deposited material at the bottom of the mixing tank 1 and inside the discharge pipe 3 back into the mixing tank 1, thereby achieving uniform mixing of the suspension. Support plates 13 are fixedly connected to both sides of the outer wall of the hollow rod 6. A vertical plate 14 is fixedly connected to one end of the support plate 13. A scraping mechanism is installed inside the vertical plate 14 to scrape the material from the inner wall of the mixing tank 1 during the discharge process.

[0022] The lifting mechanism includes a control rod 8 rotatably connected to the top of the inner wall of the hollow rod 6. The top of the control rod 8 protrudes from the top of the hollow rod 6, and a threaded block 9 is fixedly connected to the bottom. The threaded block 9 is threadedly engaged with the threaded groove of the inner wall of the hollow rod 6 and can move along the axial direction of the hollow rod 6. A limit block 10 is fixed near the bottom of the threaded block 9. The lifting rod 11 at the bottom of the threaded block 9 passes through the limit block 10 and is slidably connected to the inner wall of the hollow rod 6. A spiral rod 12 is fixedly connected to the bottom of the lifting rod 11 and can extend into the interior of the discharge pipe 3. The scraping mechanism includes a guide plate 15, which is slidably installed inside a support plate 13. One end of the guide plate 15 passes through the interior of a vertical plate 14 and is fixedly connected to a mounting plate 16. A rubber scraper 17 is fixed to the side wall of the mounting plate 16. When the guide plate 15 slides along the support plate 13, it can drive the mounting plate 16 and the rubber scraper 17 to adhere to the inner wall of the mixing tank 1. A spring 23 is connected between the mounting plate 16 and the vertical plate 14, so that the rubber scraper 17 stretches the spring 23 during the adhesion process, which facilitates the subsequent reset of the rubber scraper 17. A second sealing ring 24 is provided between the outer wall of the mounting plate 16 and the inner wall of the vertical plate 14. A first sealing ring 22 is provided between the inner wall of the spiral rod 12 and the hollow rod 6 to achieve sliding sealing and prevent material from entering the interior. The rubber scraper 17 is made of fluororubber. This material has excellent high temperature resistance, oil resistance and chemical corrosion resistance, as well as excellent wear resistance. It can effectively scrape away impurities on the inner wall of the mixing tank 1 and is not easy to age and damage. The first sealing ring 22 and the second sealing ring 24 are made of polytetrafluoroethylene, which has chemical corrosion resistance and low friction. A spiral plate 18 is fixed on the outer wall of the hollow rod 6 and is arranged spirally along the axial direction to lift the material at the bottom of the mixing tank 1. Meanwhile, support rods 19 are equidistantly distributed on the outer wall of the hollow rod 6, and a stirring plate 20 is fixed at the far end of the support rod 19. A hole 21 is opened on the stirring plate 20. During the rotation, the suspension can be disturbed and shearing action can be generated to further disperse the material evenly. When using this device to stir and scrape the suspension, first rotate the control lever 8, causing the threaded block 9 to rotate downwards along the interior of the hollow rod 6. When the threaded block 9 moves until its end face is in complete contact with the surface of the limiting block 10, the movement stops. At this point, the axial force generated by the threaded engagement causes the threaded block 9 to press tightly against the limiting block 10. This tight contact creates a large frictional torque between the threaded block 9, the limiting block 10, and the hollow rod 6. This frictional torque effectively restricts the rotational freedom of the control lever 8, thus securing it firmly and preventing [further damage]. To prevent accidental rotation during equipment operation, the threaded block 9 cannot continue to rotate downwards. During the movement of the threaded block 9, it drives the lifting rod 11 to slide along the inner wall of the hollow rod 6, passing through the limiting block 10. The lifting rod 11 has a rectangular elongated structure. Through the limiting cooperation of the limiting block 10 and the square structure of the lifting rod 11 itself, the threaded block 9 will not drive the lifting rod 11 to rotate synchronously when it rotates. The lifting rod 11 can only move downwards in the vertical direction, thus achieving a stable lifting and guiding effect. The lifting rod 11 drives the spiral rod 12 to extend downwards, penetrating... Upon reaching the interior of the discharge pipe 3, the motor 5 is started. The output of the motor 5 drives the hollow rod 6 to rotate via the belt 7. The hollow rod 6 drives the lifting rod 11 to rotate synchronously. The rotation of the lifting rod 11 drives the spiral rod 12 to rotate. Since the spiral rod 12 is spiral in shape, it can lift the suspension material accumulated inside the discharge pipe 3 and its bottom depression upwards into the mixing tank 1. Through the spiral propulsion force generated by the rotation, the sedimented suspension solid material in the depression inside the discharge pipe 3 is pushed upwards along the axial direction of the spiral rod 12. At the same time, during the lifting process, the material is forced to leave the discharge pipe. The liquid between the feed pipe 3 and the screw rod 12 is disturbed and sheared, causing the originally stationary or semi-stationary particles to be driven into the mixing tank 1, so as to effectively recover and uniformly mix the material in the recessed area. As the material is lifted up, the rotation of the hollow rod 6 drives the stirring plate 20 to rotate. The rotation of the stirring plate 20 disturbs the material lifted up, and the suspension is sheared and dispersed through the leakage hole 21 set on it, so that the solid particles originally deposited in the recessed area of ​​the discharge pipe 3 are uniformly mixed into the overall material in the mixing tank 1, so as to achieve uniform mixing of the suspension. After mixing, when discharging and cleaning the material adhering to the inner wall of the mixing tank 1, the motor 5 is stopped. At this time, the screw rod 12 is in the discharge pipe 3. To avoid affecting the discharge efficiency, the control rod 8 is rotated in the opposite direction to move the threaded block 9 upward along the inner wall of the hollow rod 6, causing the lifting rod 11 to slide upward. At the same time, the arc-shaped blocks 25 on both sides move upward. When the arc-shaped blocks 25 slide upward, they will abut against the arc-shaped surface of one end of the guide plate 15, thereby pushing the guide plate 15 to slide along the support plate 13. The guide plate 15 drives the mounting plate 16 to move. The mounting plate 16 stretches the spring 23 and makes the rubber scraper 17 tightly adhere to the inner wall of the mixing tank 1. The preload of the rubber scraper 17 is in the range of 5-20N. The rubber scraper 17 is made of silicone rubber, which has good elasticity and flexibility, as well as being non-toxic, odorless, and biocompatible. Then, the motor 5 is restarted, and the hollow rod 6 rotates to drive the rubber scraper 17 to move along the inner wall of the mixing tank 1, scraping off the solid particles attached to the suspension to ensure that the tank wall is clean. This also prevents residues from affecting the uniformity of the suspension during the next mixing or discharge. Through the coordinated work of the lifting mechanism and the scraping mechanism, even if there is a structural depression or sedimentation zone between the bottom of the storage tank and the discharge pipe 3, the settled material can still be fully lifted, mixed, and scraped off, avoiding the formation of blind spots in the mixing process. This achieves overall uniform mixing and stable discharge of the suspension, thereby improving production efficiency and product quality.

[0023] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0024] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, 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 discharge structure for a suspension after mixing, comprising a mixing tank (1), wherein the top of the mixing tank (1) is connected to a feed pipe (2) for feeding, and the side wall of the mixing tank (1) is connected to a discharge pipe (3) for discharging, and a control valve (4) is provided inside the discharge pipe (3), characterized in that: A motor (5) is fixedly connected to the top of the mixing tank (1), and a hollow rod (6) is rotatably connected to the top of the inner wall of the mixing tank (1). The top end of the hollow rod (6) passes through the top of the mixing tank (1). A belt (7) is provided between the output end of the motor (5) and the top end of the hollow rod (6) through a pulley. A lifting mechanism is provided inside the hollow rod (6) for lifting the material accumulated between the bottom of the mixing tank (1) and the inside of the discharge pipe (3) into the mixing tank (1). The hollow rod (6) has a support plate (13) fixedly connected to both sides of its outer wall. A vertical plate (14) is fixedly connected to one end of the support plate (13). The vertical plate (14) is provided with a scraping mechanism for scraping the material from the inner wall of the mixing tank (1) during discharge.

2. The discharge structure for a suspension after mixing according to claim 1, characterized in that, The lifting mechanism includes a control rod (8) rotatably connected to the top of the inner wall of the hollow rod (6). The top end of the control rod (8) extends through the top of the hollow rod (6). A threaded block (9) is fixedly connected to the bottom of the control rod (8). A threaded groove is provided on the top of the inner wall of the hollow rod (6). The threaded block (9) and the hollow rod (6) are threaded together, so that the threaded block (9) can move axially along the hollow rod (6). A limit block (10) is fixedly connected to the bottom of the inner wall of the hollow rod (6) near the threaded block (9). The bottom of the threaded block (9) passes through the bottom of the limit block (10) and is rotatably connected to a lifting rod (11). The lifting rod (11) is slidably connected to the inner wall of the hollow rod (6). A spiral rod (12) for extending into the inlet / outlet pipe (3) is fixedly connected to the bottom end of the lifting rod (11).

3. The discharge structure for a suspension after mixing according to claim 2, characterized in that, The scraping mechanism includes a guide plate (15) slidably connected inside the support plate (13). The guide plate (15) passes through the interior of the vertical plate (14) and is fixedly connected to an mounting plate (16). A rubber scraper (17) is fixedly connected to the side wall of the mounting plate (16). Arc-shaped blocks (25) are fixedly connected to both sides of the outer wall of the lifting rod (11). One end of the guide plate (15) near the hollow rod (6) passes through the hollow rod (6), and one end of the guide plate (15) is arc-shaped.

4. The discharge structure for a suspension after mixing according to claim 3, characterized in that, A spiral plate (18) is fixedly connected to the outer wall of the hollow rod (6). The spiral plate (18) spirals along the axial direction of the hollow rod (6). When the hollow rod (6) rotates, the spiral plate (18) rotates accordingly and lifts and stirs the material at the bottom of the mixing tank (1).

5. The discharge structure for a suspension after mixing according to claim 4, characterized in that, The hollow rod (6) has a number of equally spaced and evenly distributed support rods (19) fixedly connected to its outer wall. Each support rod (19) has a stirring plate (20) fixedly connected to its end away from the hollow rod (6). The stirring plate (20) has a number of equally spaced and evenly distributed leakage holes (21) on its side wall.

6. The discharge structure for a suspension after mixing according to claim 2, characterized in that, A first sealing ring (22) is fixedly connected at the connection between the lifting rod (11) and the screw rod (12). The outer wall of the first sealing ring (22) is attached to the inner wall of the hollow rod (6), thereby forming a sealing fit between the first sealing ring (22) and the interior of the hollow rod (6).

7. The discharge structure for a suspension after mixing according to claim 3, characterized in that, Multiple springs (23) are fixedly connected between the opposite surfaces of the mounting plate (16) and the vertical plate (14). When the guide plate (15) drives the mounting plate (16) and the rubber scraper (17) to move towards the inner wall of the mixing tank (1), the rubber scraper (17) adheres to the inner wall of the mixing tank (1), and the mounting plate (16) stretches the springs (23).

8. The discharge structure for a suspension after mixing according to claim 3, characterized in that, The outer wall of the mounting plate (16) is fixedly connected with a second sealing ring (24), and the outer wall of the second sealing ring (24) is in contact with the inner wall of the vertical plate (14), thereby forming a sealing fit between the interior of the mounting plate (16) and the vertical plate (14).

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