Modified polycarboxylic acid water reducing agent preparation system and preparation method thereof

Abstract

The application discloses a modified polycarboxylic acid water reducing agent preparation system and a preparation method thereof. The preparation system comprises a preparation cylinder, a driving motor is fixedly connected to the top of the preparation cylinder through a support, a driving shaft of the driving motor penetrates through the top of the preparation cylinder and is rotationally connected to the top of the preparation cylinder through a sealing bearing, one end of the driving shaft in the interior of the preparation cylinder is fixedly connected with a stirring device, a support frame is sleeved and fixedly connected to the outside of the preparation cylinder, a feeding device is communicated with the part of the top of the preparation cylinder on the side of the driving motor, and the stirring device comprises a stirring sleeve. The application relates to the technical field of water reducing agents. The modified polycarboxylic acid water reducing agent preparation system and the preparation method thereof can make the material exchange positions transversely, have a good stirring effect, conveniently change the moving range of the push plate, freely adjust according to the use requirement, conveniently adjust, have good adaptability, and only need to rotate the rotating rod when different materials are added, so that the switching operation is relatively convenient.

Description

Technical Field

[0001] This invention relates to the field of water-reducing agent technology, specifically to a modified polycarboxylate water-reducing agent preparation system and its preparation method. Background Technology

[0002] Polycarboxylate superplasticizers are a new generation of high-efficiency water-reducing agents. Based on their performance and application, they are further classified into retarded, slow-release, early-strength, slump-retaining, mud-resistant, salt-resistant, and comprehensive types. In recent years, domestic and international scholars and production technicians have conducted extensive research on the preparation methods of polycarboxylate superplasticizers with different functions, achieving significant results in both theoretical and practical research. Regarding the research progress on mud-resistant / mud-resistant polycarboxylate superplasticizers, because the superplasticizer is highly sensitive to the mud content in concrete aggregates and exhibits a strong adsorption tendency for clay, it is mainly divided into concrete clay (clay) shielding types. The various names for anti-clay agents, clay inhibitors, and anti-clay sacrificial agents all refer to the introduction of functional groups to better disperse and adsorb clay. This results in an adsorption capacity far exceeding that of the hydrophilic groups in the polycarboxylate superplasticizer backbone. Current research focuses on anti-clay superplasticizers with anti-clay effects, such as amides, phosphate esters, and silanes, as well as organic and inorganic salt combinations of anti-clay agents or clay shielding agents. These agents can be used in combination with polycarboxylate superplasticizers or added separately before the superplasticizer. Currently, the mixing devices used in the preparation of superplasticizers typically only provide simple stirring of the material inside the mixing drum, failing to exchange the material at the edge of the drum with the material in the center, resulting in poor mixing effect and efficiency. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a modified polycarboxylate superplasticizer preparation system and its preparation method, which solves the problem that the mixing devices used in the current preparation process of superplasticizers can only perform simple stirring of the materials inside the mixing cylinder, and cannot exchange the materials at the edge of the mixing cylinder with the materials at the center, resulting in poor mixing effect and efficiency.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the present invention provides the following technical solution: a modified polycarboxylate superplasticizer preparation system, comprising a preparation cylinder, a drive motor fixedly connected to the top of the preparation cylinder via a bracket, the drive shaft of the drive motor passing through the top of the preparation cylinder and rotatably connected to the top of the preparation cylinder via a sealed bearing, a stirring device fixedly connected to one end of the drive shaft of the drive motor located inside the preparation cylinder, a support frame sleeved and fixedly connected to the outside of the preparation cylinder, and a feeding device connected to the portion of the top of the preparation cylinder located on one side of the drive motor;

[0007] The stirring device includes a stirring sleeve, a telescopic sleeve connected to the side of the stirring sleeve, sealing rings fixedly connected to both ends of the inner wall of the telescopic sleeve, a top rod slidably connected through the inner wall of the sealing ring, a control rod inside the stirring sleeve, a cam assembly fixedly connected through the top of the control rod, an electric telescopic rod fixedly connected to the bottom of the control rod, the bottom of the electric telescopic rod penetrating the stirring sleeve and rotatably connected to the inner wall of the stirring sleeve through a sealed bearing, an elastic telescopic rod fixedly connected to the inner wall of the preparation cylinder, a push plate fixedly connected to the end of the elastic telescopic rod away from the inner wall of the preparation cylinder, and a sliding baffle fixedly connected to the top of the push plate.

[0008] The drive motor rotates the stirring sleeve, which in turn rotates the telescopic sleeve, which in turn rotates the push rod. During the rotation of the push rod, one end of the roller rolls on the cam assembly, which in turn drives the push rod to slide inside the telescopic sleeve. When the push rod is lifted by the cam assembly, the end of the push rod outside the telescopic sleeve rotates to the side of the push plate. The lifted push rod pushes the push plate to move outward. When the push rod moves away from the push plate, the push plate resets under the elastic force of the elastic telescopic rod, which can drive the push plate to move laterally inside the preparation cylinder. This facilitates the lateral movement of the material inside the preparation cylinder, allowing for lateral exchange of material positions and resulting in better stirring.

[0009] Preferably, the top of the stirring sleeve is fixedly connected to the drive shaft of the drive motor, and the bottom of the electric telescopic rod is fixedly connected to the bottom of the inner wall of the preparation cylinder.

[0010] Preferably, both ends of the push rod are rotatably connected to a wheel, and the portion of the push rod located inside the telescopic sleeve is fitted with a return spring. The two ends of the return spring are fixedly connected to the inner wall of the telescopic sleeve and the outer wall of the push rod, respectively.

[0011] Preferably, the cam assembly includes a large cam and a small cam. The convex end of the large cam extends to the outside of the convex end of the small cam, and the flat end of the large cam is aligned with the flat end of the small cam. When it is necessary to change the movement range of the push plate, the electric telescopic rod is extended, driving the large cam and the small cam inside the cam assembly to move upward. When the flat end of the large cam slides to the side of the rotating wheel at one end of the push rod, the rotating wheel can rotate around the large cam. The extension distance of the push rod can be changed by the large cam, which facilitates the change of the movement range of the push plate. It can be freely adjusted according to the needs of use, and the adjustment operation is convenient and adaptable.

[0012] Preferably, the feeding device includes a feeding cylinder, a storage tank is fixedly connected to the outside of the feeding cylinder, the bottom of the storage tank is open, a rotating rod is rotatably connected to the inner wall of the feeding cylinder, the bottom of the rotating rod extends to the bottom of the feeding cylinder and is fixedly connected to a rotating plate, a discharge hole is opened on the rotating plate, and a feeding device is provided. When the large cam pushes the push rod, the push rod drives the push plate to move a long distance, and the push plate can drive the sliding baffle to move away from the bottom of the rotating plate. The discharge hole on the rotating plate is released, and the material inside the storage tank can be discharged into the preparation cylinder through the bottom of the storage tank and the discharge hole. Due to the periodic movement of the push plate, intermittent feeding can be achieved, so that the material can be added to different positions, the feeding is more uniform and convenient, and the mixing effect is improved. When it is necessary to change the feeding, the rotating rod is rotated by the handle. The rotating rod drives the rotating plate to rotate, and the rotating plate drives the discharge hole to rotate. When the discharge hole moves to the bottom of the storage tank, the storage tank can communicate with the inside of the preparation cylinder through the discharge hole. When adding different materials, only the rotating rod needs to be rotated, and the switching operation is relatively convenient.

[0013] Preferably, the bottom of the feed cylinder and the storage hopper both penetrate through the top of the preparation cylinder and are fixedly connected to the top of the preparation cylinder, and multiple sets of storage hoppers are provided and evenly distributed on the side of the feed cylinder.

[0014] Preferably, the top of the rotating plate is slidably connected to the bottom of the feed cylinder and the bottom of the storage hopper, the bottom of the rotating plate is slidably connected to the top of the sliding baffle, and a handle is fixedly connected to the top of the rotating rod.

[0015] Preferably, the storage bin includes a storage hopper, the bottom of which is connected to a discharge pipe, the discharge pipe being arc-shaped, and the bottom of the discharge pipe being slidably connected to the top of the rotating plate.

[0016] A method for preparing a modified polycarboxylate superplasticizer includes the following steps:

[0017] S1. The stirring sleeve is driven by the drive motor to rotate, which in turn drives the telescopic sleeve to rotate. The telescopic sleeve drives the push rod to rotate. During the rotation of the push rod, the wheel at one end rolls on the cam assembly. The cam assembly drives the push rod to slide inside the telescopic sleeve. When the push rod is lifted by the cam assembly, the end of the push rod outside the telescopic sleeve rotates to the side of the push plate. The lifted push rod pushes the push plate to move outward. When the push rod moves away from the push plate, the push plate is reset under the elastic force of the elastic telescopic rod, which can drive the push plate to move laterally inside the preparation cylinder.

[0018] S2. When it is necessary to change the movement range of the push plate, control the extension of the electric telescopic rod to drive the large cam and small cam inside the cam group to move upward. When the flat end of the large cam slides to the side of the rotating wheel at one end of the push rod, the rotating wheel can rotate around the large cam. The extension distance of the push rod can be changed by the large cam, thereby changing the movement range of the push plate.

[0019] S3. When the large cam pushes the push rod, the push rod drives the push plate to move a long distance. The push plate can then drive the sliding baffle to move away from the bottom of the rotating plate. The discharge hole on the rotating plate is released, and the material inside the storage tank can be discharged into the preparation cylinder through the bottom of the storage tank and the discharge hole.

[0020] S4. When it is necessary to change the feed, turn the rotating rod with the handle. The rotating rod drives the rotating plate to rotate, and the rotating plate drives the discharge hole to rotate. When the discharge hole moves to the bottom of the storage tank, the storage tank can be connected to the inside of the preparation cylinder through the discharge hole.

[0021] (III) Beneficial Effects

[0022] This invention provides a modified polycarboxylate superplasticizer preparation system and its preparation method. It possesses the following characteristics:

[0023] Beneficial effects:

[0024] (I) The modified polycarboxylate superplasticizer preparation system and its preparation method involve driving a motor to rotate a stirring sleeve, which in turn drives a telescopic sleeve to rotate, which in turn drives a push rod to rotate. During the rotation of the push rod, one end of the rotating wheel rolls on a cam assembly, which in turn drives the push rod to slide inside the telescopic sleeve. When the push rod is lifted by the cam assembly, the end of the push rod located outside the telescopic sleeve rotates to the side of the push plate. The lifted push rod pushes the push plate to move outward. When the push rod moves away from the push plate, the push plate resets under the elastic force of the elastic telescopic rod, which can drive the push plate to move laterally inside the preparation cylinder. This facilitates the lateral movement of the material inside the preparation cylinder, allowing for lateral exchange of material positions and resulting in a better stirring effect.

[0025] (II) The modified polycarboxylate superplasticizer preparation system and its preparation method are equipped with a cam group. When it is necessary to change the movement range of the push plate, the electric telescopic rod is extended to drive the large cam and small cam inside the cam group to move upward. When the flat end of the large cam slides to the side of the rotating wheel at one end of the push rod, the rotating wheel can rotate around the large cam. The extension distance of the push rod can be changed by the large cam, which facilitates the change of the movement range of the push plate. It can be freely adjusted according to the use needs, and the adjustment operation is convenient and adaptable.

[0026] (III) The modified polycarboxylate superplasticizer preparation system and its preparation method are equipped with a feeding device. When the large cam pushes the push rod, the push rod drives the push plate to move a long distance. The push plate can then drive the sliding baffle to move away from the bottom of the rotating plate. The discharge hole on the rotating plate is released, and the material inside the storage tank can be discharged into the preparation cylinder through the bottom of the storage tank and the discharge hole. Due to the periodic movement of the push plate, intermittent feeding can be achieved, so that the material can be added to different positions, making the feeding more uniform and convenient, and improving the stirring effect.

[0027] (iv) The modified polycarboxylate superplasticizer preparation system and its preparation method require the use of a handle to rotate the rotating rod when the feed needs to be changed. The rotating rod drives the rotating plate to rotate, and the rotating plate drives the discharge hole to rotate. When the discharge hole moves to the bottom of the storage tank, the storage tank can be connected to the inside of the preparation cylinder through the discharge hole. When adding different materials, simply rotate the rotating rod. The switching operation is relatively convenient. Attached Figure Description

[0028] Figure 1 This is a flowchart of the present invention;

[0029] Figure 2 A schematic diagram of the structure of this invention;

[0030] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the stirring device of the present invention;

[0032] Figure 5 This is a schematic diagram of the cam assembly structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the feeding device of the present invention.

[0034] In the diagram: 1. Preparation cylinder; 2. Drive motor; 3. Stirring device; 31. Stirring sleeve; 32. Telescopic sleeve; 33. Sealing ring; 34. Push rod; 35. Control rod; 36. Cam assembly; 361. Large cam; 362. Small cam; 37. Push plate; 38. Elastic telescopic rod; 39. Sliding baffle; 30. Return spring; 310. Electric telescopic rod; 4. Support frame; 5. Feeding device; 51. Feeding cylinder; 52. Storage hopper; 521. Storage bin; 522. Discharge pipe; 53. Rotating rod; 54. Rotating plate; 55. Discharge hole. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1:

[0037] Please see Figure 1-5 The present invention provides a technical solution: a modified polycarboxylate superplasticizer preparation system, including a preparation cylinder 1, a drive motor 2 fixedly connected to the top of the preparation cylinder 1 by a bracket, the drive shaft of the drive motor 2 passing through the top of the preparation cylinder 1 and rotatably connected to the top of the preparation cylinder 1 through a sealed bearing, a stirring device 3 fixedly connected to one end of the drive shaft of the drive motor 2 inside the preparation cylinder 1, a support frame 4 sleeved and fixedly connected to the outside of the preparation cylinder 1, and a feeding device 5 connected to the part of the top of the preparation cylinder 1 located on one side of the drive motor 2;

[0038] The stirring device 3 includes a stirring sleeve 31, a telescopic sleeve 32 connected to the side of the stirring sleeve 31, sealing rings 33 fixedly connected to both ends of the inner wall of the telescopic sleeve 32, a top rod 34 slidably connected through the inner wall of the sealing ring 33, a control rod 35 is provided inside the stirring sleeve 31, a cam group 36 is fixedly connected through the top of the control rod 35, an electric telescopic rod 310 is fixedly connected to the bottom of the control rod 35, the bottom of the electric telescopic rod 310 passes through the stirring sleeve 31 and is rotatably connected to the inner wall of the stirring sleeve 31 through a sealed bearing, an elastic telescopic rod 38 is fixedly connected to the inner wall of the preparation cylinder 1, a push plate 37 is fixedly connected to the end of the elastic telescopic rod 38 away from the inner wall of the preparation cylinder 1, and a sliding baffle 39 is fixedly connected to the top of the push plate 37.

[0039] The top of the stirring sleeve 31 is fixedly connected to the drive shaft of the drive motor 2, the bottom of the electric telescopic rod 310 is fixedly connected to the bottom of the inner wall of the preparation cylinder 1, and the end of the elastic telescopic rod 38 away from the push plate 37 is fixedly connected to the inner wall of the preparation cylinder 1.

[0040] Both ends of the push rod 34 are rotatably connected to a rotating wheel. The part of the push rod 34 located inside the telescopic sleeve 32 is fitted with a return spring 30. The two ends of the return spring 30 are fixedly connected to the inner wall of the telescopic sleeve 32 and the outer wall of the push rod 34, respectively.

[0041] In use, the drive motor 2 drives the stirring sleeve 31 to rotate, the stirring sleeve 31 drives the telescopic sleeve 32 to rotate, and the telescopic sleeve 32 drives the push rod 34 to rotate. During the rotation of the push rod 34, the wheel at one end rolls on the cam group 36. The cam group 36 drives the push rod 34 to slide inside the telescopic sleeve 32. When the push rod 34 is lifted by the cam group 36, the end of the push rod 34 located outside the telescopic sleeve 32 rotates to the side of the push plate 37. The lifted push rod 34 pushes the push plate 37 to move outward. When the push rod 34 moves away from the push plate 37, the push plate 37 is reset under the elastic force of the elastic telescopic rod 38. This can drive the push plate 37 to move laterally inside the preparation cylinder 1, which facilitates the lateral movement of the material inside the preparation cylinder 1 and allows the material to exchange positions laterally, resulting in a better stirring effect.

[0042] A cam assembly 36 is provided, comprising a large cam 361 and a small cam 362. The convex end of the large cam 361 extends to the outside of the convex end of the small cam 362, and the flat end of the large cam 361 is aligned with the flat end of the small cam 362. When it is necessary to change the movement range of the push plate 37, the electric telescopic rod 310 is extended, driving the large cam 361 and the small cam 362 inside the cam assembly 36 to move upward. When the flat end of the large cam 362 slides to the side of the rotating wheel at one end of the push rod 34, the rotating wheel can rotate around the large cam 362. The extension distance of the push rod 34 can be changed by the large cam 362, which facilitates the change of the movement range of the push plate 37. It can be freely adjusted according to the needs of use, and the adjustment operation is convenient and adaptable.

[0043] Example 2:

[0044] Please see Figure 1-6Based on Embodiment 1, the present invention provides a technical solution: the feeding device 5 includes a feeding cylinder 51, a storage bin 52 is fixedly connected to the outside of the feeding cylinder 51, the bottom of the storage bin 52 is open, a rotating rod 53 is rotatably connected to the inner wall of the feeding cylinder 51, the bottom of the rotating rod 53 extends to the bottom of the feeding cylinder 51 and is fixedly connected to a rotating plate 54, a discharge hole 55 is opened on the rotating plate 54, the bottoms of the feeding cylinder 51 and the storage bin 52 both penetrate the top of the preparation cylinder 1 and are fixedly connected to the top of the preparation cylinder 1, multiple sets of storage bins 52 are provided and evenly distributed on the side of the feeding cylinder 51, the top of the rotating plate 54 is slidably connected to the bottom of the feeding cylinder 51 and the bottom of the storage bin 52, the bottom of the rotating plate 54 is slidably connected to the top of the sliding baffle 39, a handle is fixedly connected to the top of the rotating rod 53, the storage bin 52 includes a storage hopper 521, the bottom of the storage hopper 521 is connected to a discharge pipe 522, the discharge pipe 522 is arc-shaped, and the discharge pipe 522... The bottom is slidably connected to the top of the rotating plate 54 and is equipped with a feeding device 5. When the large cam 361 pushes the push rod 34, the push rod 34 drives the push plate 37 to move a long distance. The push plate 37 can then drive the sliding baffle 39 to move away from the bottom of the rotating plate 54, and the discharge hole 55 on the rotating plate 54 is released. The material inside the storage tank 52 can be discharged into the preparation cylinder 1 through the bottom of the storage tank 52 and the discharge hole 55. Due to the periodic movement of the push plate 37, intermittent feeding can be achieved, so that the material can be added to different positions. The feeding is more uniform and convenient, and the stirring effect is improved. When it is necessary to change the feeding, the rotating rod 53 is rotated by the handle. The rotating rod 53 drives the rotating plate 54 to rotate, and the rotating plate 54 drives the discharge hole 55 to rotate. When the discharge hole 55 moves to the bottom of the storage tank 52, the storage tank 52 can be connected to the inside of the preparation cylinder 1 through the discharge hole 55. When adding different materials, only the rotating rod 53 needs to be rotated. The switching operation is relatively convenient.

[0045] Example 3:

[0046] Based on the above-mentioned modified polycarboxylate superplasticizer preparation system, a method for preparing the modified polycarboxylate superplasticizer is now proposed, comprising the following steps:

[0047] S1. The stirring sleeve is driven by the drive motor to rotate, which in turn drives the telescopic sleeve to rotate. The telescopic sleeve drives the push rod to rotate. During the rotation of the push rod, the wheel at one end rolls on the cam assembly. The cam assembly drives the push rod to slide inside the telescopic sleeve. When the push rod is lifted by the cam assembly, the end of the push rod outside the telescopic sleeve rotates to the side of the push plate. The lifted push rod pushes the push plate to move outward. When the push rod moves away from the push plate, the push plate is reset under the elastic force of the elastic telescopic rod, which can drive the push plate to move laterally inside the preparation cylinder.

[0048] S2. When it is necessary to change the movement range of the push plate, control the extension of the electric telescopic rod to drive the large cam and small cam inside the cam group to move upward. When the flat end of the large cam slides to the side of the rotating wheel at one end of the push rod, the rotating wheel can rotate around the large cam. The extension distance of the push rod can be changed by the large cam, thereby changing the movement range of the push plate.

[0049] S3. When the large cam pushes the push rod, the push rod drives the push plate to move a long distance. The push plate can then drive the sliding baffle to move away from the bottom of the rotating plate. The discharge hole on the rotating plate is released, and the material inside the storage tank can be discharged into the preparation cylinder through the bottom of the storage tank and the discharge hole.

[0050] S4. When it is necessary to change the feed, turn the rotating rod with the handle. The rotating rod drives the rotating plate to rotate, and the rotating plate drives the discharge hole to rotate. When the discharge hole moves to the bottom of the storage tank, the storage tank can be connected to the inside of the preparation cylinder through the discharge hole.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modified polycarboxylate superplasticizer preparation system, comprising a preparation cylinder (1), characterized in that: The top of the preparation cylinder (1) is fixedly connected to a drive motor (2) via a bracket. The drive shaft of the drive motor (2) passes through the top of the preparation cylinder (1) and is rotatably connected to the top of the preparation cylinder (1) via a sealed bearing. A stirring device (3) is fixedly connected to one end of the drive shaft of the drive motor (2) inside the preparation cylinder (1). A support frame (4) is sleeved and fixedly connected to the outside of the preparation cylinder (1). A feeding device (5) is connected to the part of the top of the preparation cylinder (1) located on one side of the drive motor (2). The stirring device (3) includes a stirring sleeve (31), a telescopic sleeve (32) is connected to the side of the stirring sleeve (31), a sealing ring (33) is fixedly connected to both ends of the inner wall of the telescopic sleeve (32), a top rod (34) is slidably connected through the inner wall of the sealing ring (33), a control rod (35) is provided inside the stirring sleeve (31), a cam group (36) is fixedly connected through the top of the control rod (35), an electric telescopic rod (310) is fixedly connected to the bottom of the control rod (35), the bottom of the electric telescopic rod (310) passes through the stirring sleeve (31) and is rotatably connected to the inner wall of the stirring sleeve (31) through a sealed bearing, an elastic telescopic rod (38) is fixedly connected to the inner wall of the preparation cylinder (1), a push plate (37) is fixedly connected to the end of the elastic telescopic rod (38) away from the inner wall of the preparation cylinder (1), and a sliding baffle (39) is fixedly connected to the top of the push plate (37). Both ends of the top rod (34) are rotatably connected to rotating wheels. The part of the top rod (34) located inside the telescopic sleeve (32) is fitted with a return spring (30). The two ends of the return spring (30) are fixedly connected to the inner wall of the telescopic sleeve (32) and the outer wall of the top rod (34), respectively. The cam assembly (36) includes a large cam (361) and a small cam (362), the convex end of the large cam (361) extends to the outside of the convex end of the small cam (362), and the flat end of the large cam (361) is aligned with the flat end of the small cam (362). When in use, the stirring sleeve (31) is driven to rotate by the drive motor (2), the stirring sleeve (31) drives the telescopic sleeve (32) to rotate, the telescopic sleeve (32) drives the push rod (34) to rotate, and during the rotation of the push rod (34), the wheel at one end rolls on the cam group (36). The push rod (34) is driven to slide inside the telescopic sleeve (32) by the cam group (36). When the push rod (34) is lifted by the cam group (36), the end of the push rod (34) located outside the telescopic sleeve (32) rotates to the side of the push plate (37). The lifted push rod (34) pushes the push plate (37) to move outward. When the push rod (34) moves away from the push plate (37), the push plate (37) is reset under the elastic force of the elastic telescopic rod (38), and the push plate (37) moves laterally inside the preparation cylinder (1). The feeding device (5) includes a feeding cylinder (51), a storage tank (52) is fixedly connected to the outside of the feeding cylinder (51), the bottom of the storage tank (52) is open, a rotating rod (53) is rotatably connected to the inner wall of the feeding cylinder (51), the bottom of the rotating rod (53) extends to the bottom of the feeding cylinder (51) and is fixedly connected to a rotating plate (54), and a discharge hole (55) is opened on the rotating plate (54). The bottom of the feed cylinder (51) and the storage tank (52) both penetrate the top of the preparation cylinder (1) and are fixedly connected to the top of the preparation cylinder (1). The storage tank (52) is provided in multiple sets and is evenly distributed on the side of the feed cylinder (51). The top of the rotating plate (54) is slidably connected to the bottom of the feed cylinder (51) and the bottom of the storage barrel (52), the bottom of the rotating plate (54) is slidably connected to the top of the sliding baffle (39), and a handle is fixedly connected to the top of the rotating rod (53).

2. The modified polycarboxylate superplasticizer preparation system according to claim 1, characterized in that: The top of the stirring sleeve (31) is fixedly connected to the drive shaft of the drive motor (2), and the bottom of the electric telescopic rod (310) is fixedly connected to the bottom of the inner wall of the preparation cylinder (1).

3. The modified polycarboxylate superplasticizer preparation system according to claim 2, characterized in that: The storage bin (52) includes a storage hopper (521), the bottom of which is connected to a discharge pipe (522). The discharge pipe (522) is arc-shaped, and the bottom of the discharge pipe (522) is slidably connected to the top of the rotating plate (54).

4. The preparation method of the modified polycarboxylate superplasticizer preparation system according to claim 3, characterized in that: Includes the following steps: S1. The stirring sleeve is driven by the drive motor to rotate, which in turn drives the telescopic sleeve to rotate. The telescopic sleeve drives the push rod to rotate. During the rotation of the push rod, the wheel at one end rolls on the cam assembly. The cam assembly drives the push rod to slide inside the telescopic sleeve. When the push rod is lifted by the cam assembly, the end of the push rod outside the telescopic sleeve rotates to the side of the push plate. The lifted push rod pushes the push plate to move outward. When the push rod moves away from the push plate, the push plate is reset under the elastic force of the elastic telescopic rod, which can drive the push plate to move laterally inside the preparation cylinder. S2. When it is necessary to change the movement range of the push plate, control the extension of the electric telescopic rod to drive the large cam and small cam inside the cam group to move upward. When the flat end of the large cam slides to the side of the rotating wheel at one end of the push rod, the rotating wheel can rotate around the large cam. The extension distance of the push rod can be changed by the large cam, thereby changing the movement range of the push plate. S3. When the large cam pushes the push rod, the push rod drives the push plate to move a long distance. The push plate can then drive the sliding baffle to move away from the bottom of the rotating plate. The discharge hole on the rotating plate is released, and the material inside the storage tank can be discharged into the preparation cylinder through the bottom of the storage tank and the discharge hole. S4. When it is necessary to change the feed, turn the rotating rod with the handle. The rotating rod drives the rotating plate to rotate, and the rotating plate drives the discharge hole to rotate. When the discharge hole moves to the bottom of the storage tank, the storage tank can be connected to the inside of the preparation cylinder through the discharge hole.

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