Polymer dry powder skid mix device

Abstract

The utility model relates to polymer dry powder mixing technology field especially relates to a kind of polymer dry powder skid-mounted mixing device, the polymer dry powder skid-mounted mixing device includes: base, feed pipe, broken knife, crushing assembly and filter screen, the top of base is equipped with liquid storage tank, mixing jar and powder storage tank, the bottom of powder storage tank is equipped with feed pipe, its other end is communicated with mixing jar, the polymer dry powder skid-mounted mixing device provided by the utility model is designed by crushing assembly, so that the dry powder agglomerate after the feed pipe discharge end is preliminarily cut and broken, simultaneously, electric push rod drives pull rod reciprocating motion, and then let broken knife realize reciprocating displacement while high-speed rotation.This kind of rotary cutting and up-and-down sweeping multidimensional movement mode, overall coverage cross section of feed pipe discharge end, can completely break agglomerate, effectively avoids the broken dead angle problem possibly caused by single rotary motion.

Description

Technical Field

[0001] This utility model relates to the field of polymer dry powder mixing technology, and in particular to a polymer dry powder skid-mounted mixing device. Background Technology

[0002] Polymer dry powder, as an important chemical raw material, is widely used in many fields such as oil extraction, water treatment, building materials, and food processing. In practical applications, polymer dry powder needs to be mixed with liquid media in a specific ratio to form a homogeneous mother liquor in order to exert its core functions such as flocculation, thickening, and water blocking. Skid-mounted mixing devices have become the mainstream equipment for on-site mixing of polymer dry powder due to their advantages such as high integration, convenient mobility, and small footprint. These devices typically integrate powder storage tanks, mixing cylinders, conveying mechanisms, and control systems, enabling integrated operation of dry powder storage, conveying, and mixing. However, during storage, polymer powder is prone to agglomeration and clumping due to factors such as changes in environmental humidity, material compression, and electrostatic adsorption. To address this issue, existing skid-mounted mixing devices often incorporate agitators inside the powder storage tank, attempting to break up the agglomerates through mechanical stirring. However, in practical applications, it has been found that the agitators inside the storage tank can only break up larger agglomerates, failing to completely disperse smaller, dispersed agglomerates. These incompletely broken agglomerates enter the mixing cylinder with the conveying mechanism, and when mixed with the liquid, they cannot dissolve quickly, forming "fish-eye" agglomerates. This results in uneven concentration distribution of the mother liquor after mixing, reducing the efficiency of polymer utilization, affecting subsequent process effects, potentially wasting raw materials, and increasing production and operating costs.

[0003] Therefore, it is necessary to provide a new skid-mounted mixing device for polymer dry powder to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a skid-mounted mixing device for polymer dry powder.

[0005] The polymer dry powder skid-mounted mixing device provided by this utility model includes: a base, a conveying pipe, a crushing blade, a crushing component, and a filter screen. A liquid storage tank, a mixing cylinder, and a powder storage tank are installed on the top of the base. A conveying pipe is installed at the bottom of the powder storage tank, and its other end is connected to the mixing cylinder. Crushing blades are symmetrically arranged at equal intervals inside the conveying pipe near the discharge end. A crushing component is installed between the conveying pipe and the crushing blades. The crushing component drives the crushing blades to rotate, which is used to break up the lumps in the dry powder material conveyed inside the conveying pipe. A filter screen is installed inside the conveying pipe near the discharge end.

[0006] Preferably, the crushing assembly includes: a motor, a key shaft, and a key sleeve. The top of the mixing cylinder is fixedly connected to the motor, and its output end is fixedly connected to a connecting rod. The other end of the connecting rod is placed inside the conveying pipe and is fixedly connected to the key shaft. The outer wall of the key shaft is slidably connected to the key sleeve, and the outer wall of the key sleeve is fixedly connected to several of the crushing blades.

[0007] Preferably, a rotating ring is rotatably connected to the top of the key sleeve, a pull rod is fixedly connected to the side wall of the rotating ring, and the top end of the pull rod passes through the outer wall of the conveying pipe. An electric push rod is fixedly connected to the top of the mixing cylinder, and its output end is fixedly connected to the top end of the pull rod through a connecting plate.

[0008] Preferably, a bracket is fixedly connected to the discharge end of the conveying pipe, a guide rod is fixedly connected to the middle of the bracket, a sleeve is fitted on the outer wall of the guide rod, the outer wall of the guide rod is slidably connected to the inner wall of the sleeve, a spring is fixedly connected to the inner wall of the sleeve, the other end of the spring is fixedly connected to the top end of the guide rod, the top end of the sleeve is fixedly connected to the filter screen, and the side wall of the filter screen is in contact with the side wall of the conveying pipe.

[0009] Preferably, the top of the filter screen is symmetrically fixedly connected with a mating block, and the bottom of the key shaft is symmetrically fixedly connected with a pressing rod that mates with the mating block.

[0010] Preferably, a mounting bracket is fixedly connected to the top of the base near the bottom of the powder storage tank, and a motor is fixedly connected to the top of the mounting bracket near the feed end of the conveying pipe. The output end of the motor extends into the inside of the conveying pipe and is fixedly connected to a screw conveyor.

[0011] Compared with related technologies, the polymer dry powder skid-mounted mixing device provided by this utility model has the following advantages: The design of the crushing components enables the initial cutting and crushing of dry powder clumps passing through the discharge end of the conveying pipe. At the same time, the electric push rod drives the pull rod to move up and down reciprocally, thereby allowing the crushing blade to move up and down reciprocally while rotating at high speed. This multi-dimensional motion of rotational cutting and up and down sweeping fully covers the cross-section of the discharge end of the conveying pipe, which can thoroughly break up clumps and effectively avoid the crushing dead zone problem that may be caused by single rotational motion. The pressing rod at the bottom of the key shaft works in conjunction with the mating block at the top of the filter screen to make the filter screen vibrate up and down at high frequency. The fine dry powder after crushing can quickly fall into the mixing cylinder through the filter screen pores, while larger lumps that are not completely crushed are intercepted by the filter screen and bounced up, falling back to the working area of ​​the crushing blade to participate in crushing again. This repeated crushing mechanism ensures that there are no residual lumps of dry powder entering the mixing cylinder, solving the subsequent problems caused by lumps from the source. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of the polymer dry powder skid-mounted mixing device provided by this utility model; Figure 2 for Figure 1 The diagram shows a cross-sectional view of the feed pipe. Figure 3 for Figure 2 The diagram shown is a structural schematic of the screw conveyor. Figure 4 for Figure 3 The diagram shows the structure at point A. Figure 5 for Figure 3 The diagram shows the structure at point B.

[0013] The following are the labels in the diagram: 1. Base; 2. Liquid storage tank; 3. Mixing cylinder; 4. Powder storage tank; 5. Conveying pipe; 6. Crusher; 7. Filter screen; 8. Motor 1; 9. Key shaft; 10. Key sleeve; 11. Rotating ring; 12. Pull rod; 13. Electric push rod; 14. Guide rod; 15. Sleeve; 16. Spring; 17. Matching block; 18. Extrusion rod; 19. Motor 2; 20. Screw conveyor. Detailed Implementation

[0014] 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 the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0015] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0016] Please see Figures 1 to 5 A polymer dry powder skid-mounted mixing device includes: a base 1, a conveying pipe 5, a crushing blade 6, a crushing component, and a filter screen 7. A liquid storage tank 2, a mixing cylinder 3, and a powder storage tank 4 are installed on the top of the base 1. A conveying pipe 5 is installed at the bottom of the powder storage tank 4, and its other end is connected to the mixing cylinder 3. The crushing blades 6 are symmetrically arranged at equal intervals inside the conveying pipe 5 near the discharge end. A crushing component is installed between the conveying pipe 5 and the crushing blades 6. The crushing component drives the crushing blades 6 to rotate, which is used to break up the lumps in the dry powder material conveyed inside the conveying pipe 5. A filter screen 7 is installed inside the conveying pipe 5 near the discharge end.

[0017] The crushing assembly includes: a motor 8, a key shaft 9, and a key sleeve 10. The top of the mixing cylinder 3 is fixedly connected to the motor 8, and its output end is fixedly connected to a connecting rod. The other end of the connecting rod is placed inside the conveying pipe 5 and is fixedly connected to the key shaft 9. The outer wall of the key shaft 9 is slidably connected to the key sleeve 10, and the outer wall of the key sleeve 10 is fixedly connected to several of the crushing blades 6.

[0018] A rotating ring 11 is rotatably connected to the top of the key sleeve 10. A pull rod 12 is fixedly connected to the side wall of the rotating ring 11, and the top end of the pull rod 12 passes through the outer wall of the conveying pipe 5. An electric push rod 13 is fixedly connected to the top of the mixing cylinder 3, and its output end is fixedly connected to the top end of the pull rod 12 through a connecting plate.

[0019] A bracket is fixedly connected to the discharge end of the conveying pipe 5. A guide rod 14 is fixedly connected to the middle of the bracket. A sleeve 15 is fitted on the outer wall of the guide rod 14. The outer wall of the guide rod 14 is slidably connected to the inner wall of the sleeve 15. A spring 16 is fixedly connected to the inner wall of the sleeve 15. The other end of the spring 16 is fixedly connected to the top end of the guide rod 14. The top end of the sleeve 15 is fixedly connected to the filter screen 7, and the side wall of the filter screen 7 is in contact with the side wall of the conveying pipe 5.

[0020] The top of the filter screen 7 is symmetrically fixedly connected with a mating block 17, and the bottom of the key shaft 9 is symmetrically fixedly connected with a pressing rod 18 that mates with the mating block 17.

[0021] A mounting bracket is fixedly connected to the top of the base 1 near the bottom of the powder storage tank 4. A motor 19 is fixedly connected to the top of the mounting bracket near the feed end of the conveying pipe 5. A screw conveyor 20 is fixedly connected to the output end of the motor 1 inside the conveying pipe 5.

[0022] It should be noted that: the bottom of the liquid storage tank 2 is connected to the pump body through a pipe, and the output end of the pump body is connected to the top of the mixing cylinder 3 through a pipe; the mixing cylinder 3 is equipped with a stirring component, which is used to stir and mix the materials in the mixing cylinder 3, and the bottom of the mixing cylinder 3 is equipped with a discharge pipe.

[0023] The working principle of the polymer dry powder skid-mounted mixing device provided by this utility model is as follows: In the dry powder feeding stage, motor 219 on the mounting frame is started first. The output end of motor 219 drives the screw conveyor 20, which extends into the feed end of the conveying pipe 5, to rotate. The screw conveyor 20 uses the pushing force of the screw blades to smoothly transport the dry powder material falling from the bottom of the powder storage tank 4 along the axial direction of the conveying pipe 5, avoiding the accumulation of dry powder or interruption of conveying, and ensuring that the feed amount is uniform and controllable. Under the guidance of the screw conveyor 20, the dry powder continues to move towards the discharge end of the conveying pipe 5, gradually approaching the area where the crusher 6 and the filter screen 7 are located. The motor 8 at the top of the mixing cylinder 3 is started synchronously. The connecting rod at the output end of the motor 8 drives the key shaft 9, which is placed inside the conveying pipe 5, to rotate at high speed. Since the key shaft 9 and the key sleeve 10 are slidably connected, the rotational force of the key shaft 9 is directly transmitted to the key sleeve 10, which in turn drives several crushing blades 6 fixed on the outer wall of the key sleeve 10 to rotate synchronously and rapidly, performing preliminary cutting and crushing of the dry powder lumps carried in the conveying path. Next, the electric push rod 13 at the top of the mixing cylinder 3 is started. The output end of the electric push rod 13 drives the pull rod 12 to move up and down reciprocally through the connecting plate. The bottom end of the pull rod 12 is fixed to the rotating ring 11, which is rotatably connected to the outer wall of the key sleeve 10. Therefore, the up and down movement of the pull rod 12 will drive the key sleeve 10 to slide synchronously along the axial direction of the key shaft 9, so that the crushing blades 6 can move up and down reciprocally while rotating at high speed. The multi-dimensional movement of the rotating cutting and up and down sweeping of the crushing blades 6 can fully cover the cross-section of the discharge end of the conveying pipe 5, thoroughly crushing the lumps and avoiding the crushing dead angle caused by single rotational movement. Meanwhile, when the key shaft 9 rotates at high speed, the extrusion rod 18, which is symmetrically fixed at its bottom end, rotates synchronously with the key shaft 9. When the extrusion rod 18 rotates to the top of the filter screen 7, it will gradually contact and extrude the mating block 17, which is symmetrically fixed at the top of the filter screen 7, generating downward pressure. This pressure pushes the sleeve 15, which is fixed at the bottom of the filter screen 7, to slide downward along the guide rod 14, while compressing the spring 16, which is connected to the top of the guide rod 14, on the inner wall of the sleeve 15. When the extrusion rod 18 continues to rotate until it disengages from the mating block 17, the compression force of the spring 16 is released instantly, pushing the sleeve 15 to drive the filter screen 7 to quickly return to its original position. The extrusion rod 18 continues to rotate, causing the filter screen 7 to vibrate up and down at a high frequency. The fine dry powder after crushing can quickly fall into the mixing cylinder 3 through the pores of the filter screen 7. Larger lumps that are not completely crushed are intercepted by the filter screen 7 and bounced up, falling back to the working area of ​​the crushing blade 6 to participate in crushing again, ensuring that there are no residual lumps in the dry powder entering the mixing cylinder 3. While the dry powder is being screened and entering the mixing tank 3, the liquid medium in the storage tank 2 is quantitatively pumped into the mixing tank 3 through the conveying pipe connected to the top of the mixing tank 3. The liquid and dry powder are mixed in a preset ratio. The stirring component of the mixing tank 3 is started, and the stirring component rotates at high speed to fully stir the liquid-powder mixture in the tank. Since the dry powder entering the mixing tank 3 is no longer clumped and is evenly dispersed, it can quickly dissolve and fuse with the liquid medium, avoiding the formation of "fish-eye" agglomerates, and finally preparing a polymer mother liquor with uniform concentration. After the mother liquor in the mixing tank 3 reaches the preset mixing time and uniformity requirements, turn off motor 8, motor 19, electric push rod 13 and stirring assembly; through the discharge port of the mixing tank 3, the prepared mother liquor is transported to subsequent process equipment or directly used in on-site operations.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A skid-mounted mixing device for polymer dry powder, characterized in that, include: The base (1) has a liquid storage tank (2), a mixing cylinder (3) and a powder storage tank (4) installed on its top. The bottom of the powder storage tank (4) is equipped with a conveying pipe (5), and its other end is connected to the mixing cylinder (3); The crushing blade (6) is symmetrically and equidistantly arranged inside the conveying pipe (5) near the discharge end; The crushing assembly is installed between the conveying pipe (5) and the crushing blade (6). The crushing assembly drives the crushing blade (6) to rotate, which is used to break up the lumps in the dry powder material conveyed inside the conveying pipe (5). The filter screen (7) is installed inside the feed pipe (5) near the discharge end.

2. The polymer dry powder skid-mounted mixing device according to claim 1, characterized in that, The crushing assembly includes: a motor (8), a key shaft (9) and a key sleeve (10). The top of the mixing cylinder (3) is fixedly connected to the motor (8), and its output end is fixedly connected to a connecting rod. The other end of the connecting rod is placed inside the conveying pipe (5) and is fixedly connected to the key shaft (9). The outer wall of the key shaft (9) is slidably connected to the key sleeve (10), and the outer wall of the key sleeve (10) is fixedly connected to several of the crushing blades (6).

3. The polymer dry powder skid-mounted mixing device according to claim 2, characterized in that, The top of the key sleeve (10) is rotatably connected to a rotating ring (11), and a pull rod (12) is fixedly connected to the side wall of the rotating ring (11). The top of the pull rod (12) passes through the outer wall of the conveying pipe (5). The top of the mixing cylinder (3) is fixedly connected to an electric push rod (13), and its output end is fixedly connected to the top of the pull rod (12) through a connecting plate.

4. The polymer dry powder skid-mounted mixing device according to claim 3, characterized in that, A bracket is fixedly connected to the discharge end of the conveying pipe (5), and a guide rod (14) is fixedly connected to the middle of the bracket. A sleeve (15) is fitted on the outer wall of the guide rod (14). The outer wall of the guide rod (14) is slidably connected to the inner wall of the sleeve (15). A spring (16) is fixedly connected to the inner wall of the sleeve (15). The other end of the spring (16) is fixedly connected to the top end of the guide rod (14). The top end of the sleeve (15) is fixedly connected to the filter screen (7), and the side wall of the filter screen (7) is in contact with the side wall of the conveying pipe (5).

5. The polymer dry powder skid-mounted mixing device according to claim 4, characterized in that, The top of the filter screen (7) is symmetrically fixedly connected with a mating block (17), and the bottom of the key shaft (9) is symmetrically fixedly connected with a pressing rod (18) that mates with the mating block (17).

6. The polymer dry powder skid-mounted mixing device according to claim 1, characterized in that, A mounting bracket is fixedly connected to the top of the base (1) near the bottom of the powder storage tank (4). A motor (19) is fixedly connected to the top of the mounting bracket near the feed end of the conveying pipe (5). A screw conveyor (20) is fixedly connected to the output end of the motor.

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