A raw material mixing device and method for producing polyacrylamide sedimentation agent

Abstract

The invention discloses a raw material mixing device and method for producing a polyacrylamide sedimentation agent, and relates to the technical field of raw material mixing devices. The device comprises a mixing box and a stirring shaft, wherein the stirring shaft is arranged in the mixing box, stirring blades are fixedly installed on the stirring shaft at equal distances, and diffusion rods are fixedly connected between each adjacent stirring blade at equal distances. The invention drives a plurality of stirring blades to rotate by the rotation of the stirring shaft, and the raw materials are mixed by the rotation of the plurality of stirring blades. After the raw materials are mixed for a period of time, a servo motor is started to reverse the stirring shaft, and a sampling barrel is driven to move upward by the reverse rotation of the stirring shaft, and the sampling barrel takes out the mixed liquid in the mixing box, so that the sampling of the liquid in the mixing box can be completed, and it is convenient for the staff to detect the concentration of the liquid, so as to timely understand the mixing situation, which is helpful for process adjustment and quality monitoring, and improves the practicality of the mixing device.

Description

Technical Field

[0001] The invention relates to the technical field of raw material mixing devices, and in particular to a raw material mixing device and a method for producing a polyacrylamide sedimentation agent. Background Art

[0002] Polyacrylamide is a water-soluble polymer surfactant with good performance. It is not only widely used in oil field development, such as drilling, water injection, fracturing, etc., but also has many important applications in mining, chemical industry, printing and dyeing, papermaking, water treatment and soil improvement. Stirring is required during the production process of polyacrylamide sedimentation agent. Stirring helps to evenly mix the raw materials and promote the reaction.

[0003] The current raw material mixing device for the production of polyacrylamide sedimentation agent has been found to have at least the following technical problems:

[0004] The existing raw material mixing device for the production of polyacrylamide sedimentation agent lacks effective real-time monitoring means during actual use, and it is difficult for the staff to accurately grasp the specific conditions of the mixing process, such as liquid concentration, which is not conducive to timely process adjustment.

[0005] In actual use, the existing raw material mixing device for the production of polyacrylamide precipitating agent has complicated and cumbersome sampling operations, and requires manual sampling after shutdown, which is not only inefficient but may also affect the continuity of production. In order to improve production efficiency, ensure mixing quality, and be able to timely understand the mixing process and make corresponding adjustments, it is necessary to develop a raw material mixing device with efficient mixing, convenient sampling and easy operation to meet the needs of the polyacrylamide precipitating agent production process. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides a raw material mixing device and method for producing a polyacrylamide sedimentation agent to solve the above-mentioned technical problems.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A raw material mixing device for producing polyacrylamide sedimentation agent comprises a mixing box and a stirring shaft, wherein the stirring shaft is arranged in the mixing box, stirring blades are fixedly installed on the stirring shaft at equal intervals, diffusion rods are fixedly connected between each adjacent stirring blade at equal intervals, a feed port is arranged at the upper end of the mixing box, a discharge pipe is fixedly connected to the bottom end of the mixing box, a placement groove is arranged on the inner wall of the mixing box, a sampling cylinder is movably inserted into the placement groove, a liquid inlet and a liquid outlet are respectively arranged on the surface of the sampling cylinder, a connecting shaft is fixedly connected to the top end of the sampling cylinder, a gear 2 is fixedly connected to the connecting shaft, a servo motor is fixedly connected to the upper end of the mixing box, an output shaft of the servo motor is fixedly connected to the top end of the stirring shaft, a lifting assembly is arranged on the mixing box, and the lifting assembly comprises a lifting rod, a connecting block and a threaded rod.

[0011] Preferably: the top end of the stirring shaft passes through the mixing box and is rotatably connected to the mixing box, the inner wall of the mixing box is fixedly connected to a stabilizing frame, the bottom end of the stirring shaft is rotatably connected to the stabilizing frame, the threaded rod is rotatably installed on the outer end of the mixing box, the threaded rod passes through the lifting rod and is threadedly connected to the lifting rod, the bottom end of the threaded rod is fixedly connected to a handwheel, the end of the mixing box is fixedly connected to a limiting rod, the limiting rod movably passes through the lifting rod, the connecting block is fixedly installed on the lifting rod, the inner wall of the connecting block is provided with an annular groove, a connecting ring is arranged in the annular groove, the connecting shaft passes through the connecting block and is fixedly connected to the connecting ring.

[0012] Preferably: the end of the connecting block is fixedly connected to a connecting plate, a rack is installed on the connecting plate, the gear 2 is meshed with the rack, a round rod is fixedly connected to the rack, the round rod movably passes through the connecting plate, a spring 1 is movably sleeved on the round rod, the rack is fixedly connected to the connecting plate through the spring 1, a stopper is fixedly connected to the end of the round rod, a through rod is fixedly connected to the rack, the through rod movably passes through the connecting plate, one end of the rack is fixedly connected to a contact block, the upper end of the mixing box is fixedly connected to a resist block, the surface of the resist block is in contact with the surface of the contact block, and the surfaces in contact are both inclined.

[0013] Preferably: the bottom end of the lifting rod is fixedly connected to a turntable, a ring is provided on the outer side of the turntable, a fixed shaft is fixedly connected to the middle part of the upper end of the ring, a gear three is fixedly connected to the fixed shaft, a gear one is fixedly installed on the stirring shaft, a synchronous belt is provided on the gear one and the gear three, a wedge block one is fixedly installed on the turntable at equal intervals, the inner wall of the ring is provided with grooves at equal intervals, each of the grooves is provided with a wedge block two matching with the wedge block one, each of the wedge blocks two is fixedly installed with a guide column, each of the guide columns movably passes through the groove, each of the guide columns is movably provided with a spring two, and each of the wedge blocks two is fixedly connected to the inner wall of the groove through the spring two.

[0014] Preferably: a collecting cover is fixedly installed on the upper end of the mixing box, the connecting block is located above the collecting cover, the sampling tube movably passes through the collecting cover, the bottom end of the collecting cover is fixedly connected with a liquid outlet pipe, a support plate is provided below the liquid outlet pipe, a circular groove is opened on the surface of the support plate, a collecting cup is placed in the circular groove, the support plate is fixedly installed on the mixing box, and the bottom surface of the inner wall of the collecting cover is inclined.

[0015] A method for mixing raw materials for producing a polyacrylamide sedimentation agent comprises the following steps:

[0016] S1: Put the proportioned raw materials into the mixing box from the feed inlet and add an appropriate amount of water;

[0017] S2: using a stirring blade to stir and mix the raw materials in the mixing box;

[0018] S3: Use a sampling tube to sample and test the liquid in the mixing box;

[0019] S4: Make process adjustments based on the test results.

[0020] (III) Beneficial effects

[0021] One: The rotation of the stirring shaft drives a plurality of stirring blades to rotate, and the raw materials are mixed by the rotation of the plurality of stirring blades. After the raw materials are mixed for a period of time, the servo motor is started to reverse the stirring shaft, and the sampling tube is driven upward by the reverse rotation of the stirring shaft. The sampling tube brings out the mixed liquid in the mixing box, and the sampling of the liquid in the mixing box can be completed, which is convenient for the staff to detect the concentration of the liquid, so as to timely understand the mixing situation, which is helpful for process adjustment and quality monitoring, and improves the practicality of the mixing device.

[0022] Second: By providing multiple stirring blades, and each adjacent stirring blade is fixedly connected with a diffusion rod at an equidistant distance, the raw materials are mixed by rotating multiple stirring parts, so that the raw materials can be fully and evenly mixed, and the mixing efficiency and quality are improved. A stabilizing frame is fixedly connected to the inner wall of the mixing box, the bottom end of the stirring shaft is rotatably connected to the stabilizing frame, and the upper end of the stirring shaft is rotatably connected to the upper end of the mixing box, so that the stirring structure as a whole is more stable, and can maintain a good balance during operation, reducing the probability of shaking and failure.

[0023] 3: The counterclockwise rotation of wedge block 2 will exert force on wedge block 1, causing the turntable to rotate counterclockwise, and the counterclockwise rotation of the turntable drives the threaded rod to rotate counterclockwise, and the counterclockwise rotation of the threaded rod drives the lifting rod to move upward, and the upward movement of the lifting rod drives the connecting block to move upward, and the upward movement of the connecting block drives the sampling tube to move upward. The liquid in the mixing box can be brought out by moving the sampling tube upward to complete the sampling operation. The transmission structure is reasonably designed, which is convenient for sampling the liquid in the mixing box. The sampling operation can be achieved by controlling the rotation direction of the servo motor. It is simple and convenient, and improves the convenience of use. When the stirring shaft rotates clockwise, the turntable will not be driven to rotate, thereby not affecting the normal stirring work, realizing the relative independence of the stirring and sampling functions, and being more convenient to use.

[0024] Fourth: The liquid in the mixing box is exposed to the outside through the liquid inlet, so that the liquid in the mixing box enters the sampling tube from the liquid inlet. As the sampling tube moves upward, the liquid inlet and the liquid outlet are exposed in the collecting cover. The liquid in the sampling tube will flow from the liquid outlet to the collecting cover, and flow from the liquid outlet pipe into the collecting cup along the inclined direction of the bottom surface of the inner wall of the collecting cover, completing the collection of the liquid in the sampling tube, making it more convenient to collect the sampled liquid in the mixing box. From the rising and rotating of the sampling tube to the collection of the liquid, the whole process is coherent and smooth, which improves the overall effect of the work. The whole process is automatic and does not require too much manual intervention, which improves the efficiency of sampling and collection.

[0025] 5. After the sampling tube is rotated 90 degrees, the liquid inlet is exposed on the outside of the placement groove, and the liquid outlet is still in contact with the inner wall of the placement groove. This design can prevent the liquid in the sampling tube from flowing into the mixing box again from the liquid outlet during the upward movement of the sampling tube, thereby ensuring stable sampling of the liquid and ensuring the accuracy and stability of the sampling amount.

[0026] Six: By twisting the handwheel to reverse, the threaded rod can be reversed, and the lifting rod and the connecting block can be reset by reversing the threaded rod, so as to facilitate subsequent sampling operations and be more convenient to use. The through rod and the round rod are both movable through the connecting plate, which limits the movement of the rack, so that the rack can only move in the horizontal direction, ensuring stable driving of the sampling barrel to rotate, and the connecting block moves down, so that the rack and the contact block move down, so that the contact block fits with the surface of the abutment block, and can drive the sampling barrel to rotate and reset to the initial state, preventing the liquid from directly entering the sampling barrel when the raw materials are not mixed, ensuring the accuracy of the sampled liquid, thereby ensuring the subsequent precise control and adjustment of the raw material mixing process, and ensuring the rationality of the structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0028] Figure 1 This is a structural diagram of the overall raw material mixing device for producing the polyacrylamide sedimentation agent of the present invention;

[0029] Figure 2 It is a structural diagram of the collecting cover of the present invention;

[0030] Figure 3 It is a structural diagram of a mixing box cut away from the present invention;

[0031] Figure 4 It is a structural diagram of the placement groove of the present invention;

[0032] Figure 5 It is a structural diagram of the sampling tube of the present invention;

[0033] Figure 6 is a structural diagram of the rack of the present invention;

[0034] Figure 7 It is a structural diagram of a connection block cut away from the present invention;

[0035] Figure 8 It is a structural diagram of the turntable of the present invention;

[0036] Fig. 9 It is a structural diagram of the explosion three-dimensional decomposition of the collar of the present invention.

[0037] Legend: 1. Mixing box; 11. Feeding port; 12. Discharge pipe; 13. Servo motor; 14. Placement slot; 15. Stabilizing frame; 16. Limit rod; 2. Stirring shaft; 21. Stirring blade; 22. Diffusion rod; 23. Gear 1; 24. Synchronous belt; 3. Sampling tube; 31. Liquid inlet; 32. Liquid outlet; 33. Connecting shaft; 34. Gear 2; 4. Lifting rod; 5. Connecting block; 51. Connecting plate; 52. Rack; 53 , contact block; 54, round rod; 55, spring one; 56, stopper; 57, through rod; 58, annular groove; 59, connecting ring; 6, threaded rod; 61, hand wheel; 7, turntable; 71, collar; 72, wedge block one; 73, groove; 74, wedge block two; 75, guide column; 76, spring two; 77, fixed shaft; 78, gear three; 8, stopper; 9, collection cover; 91, liquid outlet pipe; 92, support plate; 93, collection cup. DETAILED DESCRIPTION

[0038] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0039] Embodiment: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, in view of the problems existing in the prior art, the present invention provides a raw material mixing device for the production of polyacrylamide sedimentation agent, comprising a mixing box 1 and a stirring shaft 2, the stirring shaft 2 is arranged in the mixing box 1, stirring blades 21 are fixedly installed on the stirring shaft 2 at equal intervals, and diffusion rods 22 are fixedly connected between each adjacent stirring blade 21 at equal intervals, a feed port 11 is arranged at the upper end of the mixing box 1, a liquid discharge pipe 12 is fixedly connected to the bottom end of the mixing box 1, a placement groove 14 is provided on the inner wall of the mixing box 1, a sampling cylinder 3 is movably inserted into the placement groove 14, a liquid inlet 31 and a liquid outlet 32 ​​are respectively provided on the surface of the sampling cylinder 3, a connecting shaft 33 is fixedly connected to the top end of the sampling cylinder 3, a gear 2 34 is fixedly connected to the connecting shaft 33, and a gear 34 is fixedly connected to the upper end of the mixing box 1. A servo motor 13, the output shaft of the servo motor 13 is fixedly connected to the top of the stirring shaft 2, a lifting assembly is provided on the mixing box 1, the lifting assembly includes a lifting rod 4, a connecting block 5 and a threaded rod 6, the top of the stirring shaft 2 passes through the mixing box 1 and is rotatably connected to the mixing box 1, the inner wall of the mixing box 1 is fixedly connected with a stabilizing frame 15, the bottom end of the stirring shaft 2 is rotatably connected to the stabilizing frame 15, the threaded rod 6 is rotatably installed on the outer end of the mixing box 1, the threaded rod 6 passes through the lifting rod 4 and is threadedly connected to the lifting rod 4, the bottom end of the threaded rod 6 is fixedly connected with a hand wheel 61, the end of the mixing box 1 is fixedly connected with a limit rod 16, the limit rod 16 movably passes through the lifting rod 4, the connecting block 5 is fixedly installed on the lifting rod 4, the inner wall of the connecting block 5 is provided with an annular groove 58, the annular groove A connecting ring 59 is provided in the shaped groove 58, the connecting shaft 33 passes through the connecting block 5 and is fixedly connected to the connecting ring 59, a connecting plate 51 is fixedly connected to the end of the connecting block 5, a rack 52 is installed on the connecting plate 51, the gear 2 34 is meshed with the rack 52, a round rod 54 is fixedly connected to the rack 52, the round rod 54 movably passes through the connecting plate 51, a spring 55 is movably sleeved on the round rod 54, the rack 52 is fixedly connected to the connecting plate 51 through the spring 55, a stopper 56 is fixedly connected to the end of the round rod 54, a penetrating rod 57 is fixedly connected to the rack 52, the penetrating rod 57 movably passes through the connecting plate 51, one end of the rack 52 is fixedly connected to the contact block 53, and a resist block 8 is fixedly connected to the upper end of the mixing box 1, and the surface of the resist block 8 is in contact with the surface of the contact block 53 The bottom end of the lifting rod 4 is fixedly connected with a turntable 7, a collar 71 is sleeved on the outer side of the turntable 7, a fixed shaft 77 is fixedly connected to the middle part of the upper end of the collar 71, a gear three 78 is fixedly connected to the fixed shaft 77, a gear one 23 is fixedly installed on the stirring shaft 2, a synchronous belt 24 is sleeved on the gear one 23 and the gear three 78, a wedge block one 72 is fixedly installed on the circumference of the turntable 7 at equal intervals, a groove 73 is opened at equal intervals on the inner wall of the collar 71, each groove 73 is provided with a wedge block two 74 adapted to the wedge block one 72, each wedge block two 74 is fixedly installed with a guide column 75, each guide column 75 respectively movably penetrates the groove 73, and each guide column 75 is movably sleeved with a spring two 76,Each wedge block 2 74 is fixedly connected to the inner wall of the groove 73 through a spring 2 76. A collecting cover 9 is fixedly installed on the upper end of the mixing box 1. The connecting block 5 is located above the collecting cover 9. The sampling tube 3 movably penetrates the collecting cover 9. A liquid outlet pipe 91 is fixedly connected to the bottom end of the collecting cover 9. A support plate 92 is arranged below the liquid outlet pipe 91. A circular groove is opened on the surface of the support plate 92. A collecting cup 93 is placed in the circular groove. The support plate 92 is fixedly installed on the mixing box 1. The bottom surface of the inner wall of the collecting cover 9 is inclined. When the raw materials need to be mixed, the well-proportioned raw materials are put into the mixing box 1 from the feed port 11, and an appropriate amount of water is also put into the mixing box 1 from the feed port 11. The servo motor 13 is started to rotate the stirring shaft 2. Through the rotation of the stirring shaft 2 The stirring blades 21 are driven to rotate, and the raw materials are mixed by the rotation of the stirring blades 21. After the raw materials are mixed for a period of time, the servo motor 13 is started to reverse the stirring shaft 2, and the sampling tube 3 is driven to move up by the reverse rotation of the stirring shaft 2. The sampling tube 3 takes out the mixed liquid in the mixing box 1, and the sampling of the liquid in the mixing box 1 can be completed, which is convenient for the staff to detect the concentration of the liquid, so as to understand the mixing situation in time, which is helpful for process adjustment and quality monitoring, and improves the practicality of the mixing device. By providing a plurality of stirring blades 21, and each adjacent stirring blade 21 is equidistantly fixedly connected with a diffusion rod 22, the raw materials are mixed by the rotation of a plurality of stirring parts, so that the raw materials can be fully mixed and evenly mixed, and the mixing efficiency and quality are improved. , a stabilizing frame 15 is fixedly connected to the inner wall of the mixing box 1, the bottom end of the stirring shaft 2 is rotatably connected to the stabilizing frame 15, and the upper end of the stirring shaft 2 is rotatably connected to the upper end of the mixing box 1, so that the stirring structure as a whole is more stable, and can maintain a good balance during operation, reducing the probability of shaking and failure. The servo motor 13 is started to rotate the stirring shaft 2 clockwise, and the stirring shaft 2 rotates clockwise to drive the gear 1 23 to rotate clockwise, and the gear 1 23 rotates clockwise to drive the fixed shaft 77 and the gear 3 78 to rotate clockwise, and the fixed shaft 77 rotates clockwise to make the ring 71 rotate clockwise, and the ring 71 rotates clockwise to drive the wedge block 2 74 to rotate clockwise, and the spring 2 76 is deformed by force to make the wedge block There is a sliding misalignment between the second 74 and the wedge block 1 72, so when the stirring shaft 2 rotates clockwise, the turntable 7 will not be driven to rotate. When it is necessary to sample the liquid in the mixing box 1, the servo motor 13 is started to make the stirring shaft 2 rotate counterclockwise, and the ring 71 rotates counterclockwise through the counterclockwise rotation of the stirring shaft 2, and the wedge block 2 74 is driven to rotate counterclockwise through the counterclockwise rotation of the ring 71, and the wedge block 1 72 is applied with a force through the counterclockwise rotation of the wedge block 2 74, so that the turntable 7 rotates counterclockwise, and the threaded rod 6 is driven to rotate counterclockwise through the counterclockwise rotation of the turntable 7, and the lifting rod 4 is driven to move up through the counterclockwise rotation of the threaded rod 6, and the lifting rod 4 is driven to move up through the upward movement of the lifting rod 4, and the connecting block 5 is driven to move up through the upward movement of the connecting block 5. The sampling tube 3 is driven to move up.The liquid in the mixing box 1 can be brought out by moving the sampling tube 3 upward to complete the sampling operation. The transmission structure is reasonably designed, which is convenient for sampling the liquid in the mixing box 1. The sampling operation can be achieved by controlling the rotation direction of the servo motor 13. It is simple and convenient, and the convenience of use is improved. When the stirring shaft 2 rotates clockwise, the turntable 7 will not be driven to rotate, thereby not affecting the normal stirring work, and the stirring and sampling functions are relatively independent, which is more convenient to use. In the initial state, the liquid inlet 31 and the liquid outlet 32 ​​are both in contact with the inner wall of the placement groove 14. The upward movement of the lifting rod 4 will drive the connecting block 5 and the sampling tube 3 to move upward. The upward movement of the connecting block 5 drives the rack 52 and the contact block 53 to move upward. When the surface of the contact block 53 is not in contact with the surface of the stop block 8 The stop block 8 no longer exerts a force on the contact block 53, and the reset action of the spring 1 55 is utilized to move the rack 52 to reset, and the movement of the rack 52 drives the gear 2 34 to rotate, and the rotation of the gear 2 34 drives the connecting shaft 33 and the sampling tube 3 to rotate, and the rotation angle of the sampling tube 3 is ninety degrees. The rotation of the sampling tube 3 makes the liquid inlet 31 exposed to the outside of the placement groove 14, and the liquid outlet 32 ​​is still in contact with the inner wall of the placement groove 14, and is exposed to the outside through the liquid inlet 31, so that the liquid in the mixing box 1 enters the sampling tube 3 from the liquid inlet 31. As the sampling tube 3 moves upward, the liquid inlet 31 and the liquid outlet 32 ​​are exposed in the collection cover 9, and the liquid in the sampling tube 3 will flow from the liquid outlet 32 ​​to the collection cover 9, and flow along the inner wall of the collection cover 9. The inclined direction of the bottom surface of the wall flows from the liquid outlet pipe 91 into the collecting cup 93, completing the collection of the liquid in the sampling tube 3, making it more convenient to collect the sampled liquid in the mixing box 1. From the rise and rotation of the sampling tube 3 to the collection of the liquid, the entire process is coherent and smooth, which improves the overall effect of the work. The entire process is carried out automatically without too much manual intervention, which improves the efficiency of sampling and collection. After the sampling tube 3 is rotated ninety degrees, the liquid inlet 31 is exposed on the outside of the placement groove 14, and the liquid outlet 32 ​​is still in contact with the inner wall of the placement groove 14. Through this design, it is avoided that the liquid in the sampling tube 3 flows into the mixing box 1 again from the liquid outlet 32 ​​during the upward movement of the sampling tube 3, thereby ensuring stable sampling of the liquid, ensuring the accuracy and stability of the sampling amount, and the sampling amount can be accurately sampled by twisting the hand wheel. 61 is reversed, so that the threaded rod 6 is reversed. By reversing the threaded rod 6, the lifting rod 4 and the connecting block 5 can be reset to facilitate the subsequent sampling operation, which is more convenient to use. The through rod 57 and the round rod 54 are both movably penetrated through the connecting plate 51, which limits the movement of the rack 52, so that the rack 52 can only move in the horizontal direction, ensuring stable driving of the sampling tube 3 to rotate. By moving the connecting block 5 downward, the rack 52 and the contact block 53 are moved downward, so that the contact block 53 and the surface of the abutment block 8 are fitted, which can drive the sampling tube 3 to rotate and reset to the initial state, preventing the liquid from directly entering the sampling tube 3 when the raw materials are not mixed, ensuring the accuracy of the sampled liquid, thereby ensuring the subsequent precise control and adjustment of the raw material mixing process.Ensure the rationality of the structural design.

[0040] A method for mixing raw materials for producing a polyacrylamide sedimentation agent comprises the following steps:

[0041] S1: Put the proportioned raw materials into the mixing box 1 from the feed port 11, and add an appropriate amount of water;

[0042] S2: Using the stirring blade 21 to stir and mix the raw materials in the mixing box 1;

[0043] S3: Using the sampling tube 3 to sample and test the liquid in the mixing box 1;

[0044] S4: Make process adjustments based on the test results.

[0045] Working principle:

[0046] In the first step, when the raw materials need to be mixed, the raw materials with good proportion are put into the mixing box 1 from the feed port 11, and an appropriate amount of water is also put into the mixing box 1 from the feed port 11, and the servo motor 13 is started to rotate the stirring shaft 2, and the rotation of the stirring shaft 2 drives a plurality of stirring blades 21 to rotate, and the raw materials are mixed by the rotation of the plurality of stirring blades 21. After the raw materials are mixed for a period of time, the servo motor 13 is started to reverse the stirring shaft 2, and the sampling tube 3 is driven to move up by the reverse rotation of the stirring shaft 2, and the sampling tube 3 takes out the mixed liquid in the mixing box 1, so that the sampling of the liquid in the mixing box 1 can be completed, which is convenient for the staff to detect the concentration of the liquid, so as to timely understand the mixing situation, which is helpful for process adjustment and quality monitoring, and improves the practicality of the mixing device;

[0047] In the second step, a plurality of stirring blades 21 are provided, and diffusion rods 22 are fixedly connected between each adjacent stirring blade 21 at equal distances. The raw materials are mixed by rotating the plurality of stirring parts, so that the raw materials can be fully mixed and evenly mixed, and the mixing efficiency and quality are improved. A stabilizing frame 15 is fixedly connected to the inner wall of the mixing box 1, the bottom end of the stirring shaft 2 is rotatably connected to the stabilizing frame 15, and the upper end of the stirring shaft 2 is rotatably connected to the upper end of the mixing box 1, so that the stirring structure as a whole is more stable, and a good balance can be maintained during operation, reducing the probability of shaking and failure.

[0048] The third step is to start the servo motor 13 to make the stirring shaft 2 rotate clockwise, and the clockwise rotation of the stirring shaft 2 drives the gear 1 23 to rotate clockwise, and the clockwise rotation of the gear 1 23 drives the fixed shaft 77 and the gear 3 78 to rotate clockwise, and the clockwise rotation of the fixed shaft 77 makes the ring 71 rotate clockwise, and the clockwise rotation of the ring 71 drives the wedge block 2 74 to rotate clockwise, and the spring 2 76 is deformed by force to make the wedge block 2 74 and the wedge block 1 72 slide and misalign, so that the turntable 7 will not be driven to rotate when the stirring shaft 2 rotates clockwise, and when it is necessary to sample the liquid in the mixing box 1, start the servo motor 13 to make the stirring shaft 2 rotate counterclockwise, and the counterclockwise rotation of the stirring shaft 2 makes the ring 71 rotate counterclockwise, and the wedge block 2 is driven by the counterclockwise rotation of the ring 71 74 rotates counterclockwise, and the counterclockwise rotation of the wedge block 2 74 will apply a force to the wedge block 1 72, so that the turntable 7 rotates counterclockwise, and the counterclockwise rotation of the turntable 7 drives the threaded rod 6 to rotate counterclockwise, and the counterclockwise rotation of the threaded rod 6 drives the lifting rod 4 to move up, and the upward movement of the lifting rod 4 drives the connecting block 5 to move up, and the upward movement of the connecting block 5 drives the sampling tube 3 to move up, and the liquid in the mixing box 1 can be brought out by the upward movement of the sampling tube 3 to complete the sampling operation. The transmission structure is reasonably designed, which is convenient for sampling the liquid in the mixing box 1. The sampling operation can be realized by controlling the rotation direction of the servo motor 13, which is simple and convenient, and improves the convenience of use. When the stirring shaft 2 rotates clockwise, the turntable 7 will not be driven to rotate, thereby not affecting the normal stirring work, realizing the relative independence of the stirring and sampling functions, and being more convenient to use;

[0049] The fourth step, in the initial state, the liquid inlet 31 and the liquid outlet 32 ​​are both in contact with the inner wall of the placement groove 14, and the upward movement of the lifting rod 4 will drive the connecting block 5 and the sampling tube 3 to move upward, and the upward movement of the connecting block 5 will drive the rack 52 and the contact block 53 to move upward. When the surface of the contact block 53 is not in contact with the surface of the stop block 8, the stop block 8 no longer applies a force to the contact block 53, and the reset action of the spring 1 55 is used to make the rack 52 move and reset, and the movement of the rack 52 drives the gear 2 34 to rotate, and the rotation of the gear 2 34 drives the connecting shaft 33 and the sampling tube 3 to rotate, and the rotation angle of the sampling tube 3 is ninety degrees. The liquid inlet 31 is exposed to the outside of the placement groove 14 through the rotation of the sampling tube 3, and the liquid outlet 32 ​​is exposed to the outside of the placement groove 14, and the liquid outlet 32 ​​is exposed to the outside of the placement groove 14. It is still in contact with the inner wall of the placement groove 14, and is exposed to the outside through the liquid inlet 31, so that the liquid in the mixing box 1 enters the sampling tube 3 from the liquid inlet 31. As the sampling tube 3 moves upward, the liquid inlet 31 and the liquid outlet 32 ​​are exposed in the collecting cover 9. The liquid in the sampling tube 3 will flow from the liquid outlet 32 ​​to the collecting cover 9, and flow from the liquid outlet pipe 91 into the collecting cup 93 along the inclined direction of the bottom surface of the inner wall of the collecting cover 9, completing the collection of the liquid in the sampling tube 3, making it more convenient to collect the sampled liquid in the mixing box 1. From the rise and rotation of the sampling tube 3 to the collection of the liquid, the whole process is coherent and smooth, which improves the overall effect of the work. The whole process is automatic, without too much manual intervention, and improves the efficiency of sampling and collection.

[0050] In the fifth step, after the sampling tube 3 is rotated 90 degrees, the liquid inlet 31 is exposed on the outside of the placement groove 14, and the liquid outlet 32 ​​is still in contact with the inner wall of the placement groove 14. This design prevents the liquid in the sampling tube 3 from flowing into the mixing box 1 again from the liquid outlet 32 ​​during the upward movement of the sampling tube 3, thereby ensuring stable sampling of the liquid and ensuring the accuracy and stability of the sampling amount.

[0051] The sixth step is to reverse the threaded rod 6 by twisting the hand wheel 61. The lifting rod 4 and the connecting block 5 can be reset by reversing the threaded rod 6, so as to facilitate the subsequent sampling operation and make it more convenient to use. The through rod 57 and the round rod 54 are both movable through the connecting plate 51, which limits the movement of the rack 52, so that the rack 52 can only move in the horizontal direction, ensuring the stable driving of the sampling tube 3 to rotate. The connecting block 5 moves downward, so that the rack 52 and the contact block 53 move downward, so that the contact block 53 fits with the surface of the abutment block 8, and can drive the sampling tube 3 to rotate and reset to the initial state, preventing the liquid from directly entering the sampling tube 3 when the raw materials are not mixed, ensuring the accuracy of the sampled liquid, thereby ensuring the subsequent precise control and adjustment of the raw material mixing process, and ensuring the rationality of the structural design.

[0052] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A raw material mixing device for producing a polyacrylamide sedimentation agent, comprising a mixing box (1) and a stirring shaft (2), characterized in that: The stirring shaft (2) is arranged in the mixing box (1), stirring blades (21) are fixedly installed on the stirring shaft (2) at equal intervals, and diffusion rods (22) are fixedly connected between each adjacent stirring blade (21) at equal intervals. The upper end of the mixing box (1) is provided with a feed inlet (11), and the bottom end of the mixing box (1) is fixedly connected with a liquid discharge pipe (12); The inner wall of the mixing box (1) is provided with a placement groove (14), a sampling tube (3) is movably inserted into the placement groove (14), a liquid inlet (31) and a liquid outlet (32) are respectively provided on the surface of the sampling tube (3), a connecting shaft (33) is fixedly connected to the top end of the sampling tube (3), and a gear 2 (34) is fixedly connected to the connecting shaft (33); The upper end of the mixing box (1) is fixedly connected to a servo motor (13), the output shaft of the servo motor (13) is fixedly connected to the top end of the stirring shaft (2), and a lifting assembly is provided on the mixing box (1), the lifting assembly comprising a lifting rod (4), a connecting block (5) and a threaded rod (6); The end of the connecting block (5) is fixedly connected to a connecting plate (51), a rack (52) is mounted on the connecting plate (51), the gear 2 (34) is meshed with the rack (52), a round rod (54) is fixedly connected to the rack (52), the round rod (54) movably penetrates the connecting plate (51), a spring 1 (55) is movably sleeved on the round rod (54), the rack (52) is fixedly connected to the connecting plate (51) via the spring 1 (55), a stopper (56) is fixedly connected to the end of the round rod (54), a penetration rod (57) is fixedly connected to the rack (52), the penetration rod (57) movably penetrates the connecting plate (51), and one end of the rack (52) is fixedly connected to a contact block (53); The bottom end of the lifting rod (4) is fixedly connected to a rotating disk (7), a collar (71) is sleeved on the outer side of the rotating disk (7), a fixed shaft (77) is fixedly connected to the middle part of the upper end of the collar (71), a gear three (78) is fixedly connected to the fixed shaft (77), a gear one (23) is fixedly installed on the stirring shaft (2), a synchronous belt (24) is sleeved on the gear one (23) and the gear three (78), a wedge block one (72) is fixedly installed at equal intervals on the circumference of the rotating disk (7), and the collar is fixedly connected to the rotating disk (7). The inner wall of the groove (71) is equidistantly provided with grooves (73), each of the grooves (73) is provided with a wedge block (74) matched with the wedge block (72), each of the wedge blocks (74) is fixedly mounted with a guide column (75), each of the guide columns (75) is movably inserted through the groove (73), each of the guide columns (75) is movably sleeved with a spring (76), and each of the wedge blocks (74) is fixedly connected to the inner wall of the groove (73) via the spring (76).

2. A raw material mixing device for producing polyacrylamide sedimentation agent according to claim 1, characterized in that: The top end of the stirring shaft (2) passes through the mixing box (1) and is rotatably connected to the mixing box (1); a stabilizing frame (15) is fixedly connected to the inner wall of the mixing box (1); The bottom end of the stirring shaft (2) is rotatably connected to the stabilizing frame (15).

3. The raw material mixing device for producing polyacrylamide sedimentation agent according to claim 1, characterized in that: The threaded rod (6) is rotatably mounted on the outer end of the mixing box (1); the threaded rod (6) passes through the lifting rod (4) and is threadedly connected to the lifting rod (4); The bottom end of the threaded rod (6) is fixedly connected to a hand wheel (61), the end of the mixing box (1) is fixedly connected to a limit rod (16), and the limit rod (16) movably passes through the lifting rod (4).

4. The raw material mixing device for producing polyacrylamide sedimentation agent according to claim 1, characterized in that: The connecting block (5) is fixedly mounted on the lifting rod (4); an annular groove (58) is provided on the inner wall of the connecting block (5); a connecting ring (59) is provided in the annular groove (58); The connecting shaft (33) passes through the connecting block (5) and is fixedly connected to the connecting ring (59).

5. A raw material mixing device for producing polyacrylamide sedimentation agent according to claim 4, characterized in that: The upper end of the mixing box (1) is fixedly connected with a stop block (8); The surface of the stop block (8) fits the surface of the contact block (53), and the fitting surfaces are both designed as inclined surfaces.

6. A raw material mixing device for producing polyacrylamide sedimentation agent according to claim 5, characterized in that: A collecting cover (9) is fixedly mounted on the upper end of the mixing box (1), the connecting block (5) is located above the collecting cover (9), the sampling tube (3) movably passes through the collecting cover (9), a liquid outlet pipe (91) is fixedly connected to the bottom end of the collecting cover (9), a supporting plate (92) is provided below the liquid outlet pipe (91), a circular groove is provided on the surface of the supporting plate (92), and a collecting cup (93) is placed in the circular groove; The support plate (92) is fixedly mounted on the mixing box (1), and the bottom surface of the inner wall of the collecting cover (9) is inclined.

7. A method for mixing raw materials for producing a polyacrylamide sedimentation agent, comprising a raw material mixing device for producing a polyacrylamide sedimentation agent according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: Put the well-proportioned raw materials into the mixing box (1) from the feed inlet (11), and add an appropriate amount of water; S2: using a stirring blade (21) to stir and mix the raw materials in the mixing box (1); S3: using the sampling tube (3) to sample and test the liquid in the mixing box (1); S4: Make process adjustments based on the test results.

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