A reaction kettle for preparing polycarboxylate water reducer

Abstract

The invention discloses a reactor for preparing polycarboxylic acid water-reducing agent, which relates to the technical field of reactors, and comprises a shell, a main stirring member, an auxiliary stirring member, a wall scraping member, a driving mechanism, and a transmission mechanism, wherein the transmission mechanism is assembled to be movably arranged between the following three stations: at the first station, the main stirring member, the auxiliary stirring member, and the wall scraping member rotate synchronously, and the auxiliary stirring member and the wall scraping member both revolve synchronously with the axis of the main stirring member as the rotation axis; at the second station, the main stirring member, the auxiliary stirring member, and the wall scraping member rotate synchronously; at the third station, the main stirring member rotates, and the auxiliary stirring member and the wall scraping member both revolve synchronously with the axis of the main stirring member as the rotation axis. The reactor for preparing polycarboxylic acid water-reducing agent, through the setting of the adjustment mechanism, the staff can switch the transmission mechanism between the three stations, providing a stirring mode and stirring intensity suitable for different processes, and meeting the production needs of the factory.

Description

Technical Field

[0001] The invention relates to the technical field of reactors, in particular to a reactor for preparing a polycarboxylate water-reducing agent. Background Art

[0002] Water reducer refers to an admixture that can reduce the amount of mixing water and improve the strength of concrete under the condition that the workability of concrete and the amount of cement remain unchanged; or save the amount of cement under the condition that the workability and strength remain unchanged. Polycarboxylate superplasticizer (Polycarboxylate Superplasticizer) is a high-performance water reducer and a cement dispersant in cement concrete. It is widely used in projects such as roads, bridges, dams, tunnels, and high-rise buildings. This product is green and environmentally friendly, non-flammable, non-explosive, and can be safely transported by train and car. Reactors are usually used in the preparation of polycarboxylate superplasticizer.

[0003] The preparation process of polycarboxylic acid water-reducing agent is complicated and has multiple steps. Different steps have different requirements for stirring mode and stirring intensity. However, the existing reaction kettle for preparing polycarboxylic acid water-reducing agent cannot provide stirring mode and stirring intensity suitable for the step according to the requirements of different steps, and it is difficult to meet the production needs of the factory. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a reactor for preparing a polycarboxylate water-reducing agent, which solves the problem that the existing reactor for preparing a polycarboxylate water-reducing agent cannot provide a stirring mode and stirring intensity suitable for the process according to the requirements of different processes, and is difficult to meet the production needs of the factory.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A reaction kettle for preparing polycarboxylic acid water-reducing agent, comprising a shell, wherein a main stirring member, an auxiliary stirring member, and a wall scraping member are rotatably arranged inside the shell, and a driving mechanism for driving the main stirring member, the auxiliary stirring member, and the wall scraping member to rotate is arranged on the top of the shell, and also comprises a transmission mechanism installed on the driving mechanism, wherein the transmission mechanism comprises a first transmission ring fixedly installed on the circumference of a driving shaft;

[0008] a second transmission ring fixedly mounted on the upper surface of the first spur gear;

[0009] A set of movable components arranged on the peripheral side of the driving shaft, the movable components slide along the axial direction of the driving shaft, the movable components are located between the first transmission ring and the second transmission ring, and the top of the movable components matches with the bottom of the first transmission ring, and the bottom of the movable components matches with the top of the second transmission ring;

[0010] The movable component comprises a third transmission ring and a fourth transmission ring which are arranged opposite to each other, and two first connecting columns which are arranged opposite to each other are fixedly connected between the third transmission ring and the fourth transmission ring;

[0011] It also includes a set of movable rings arranged on the circumferential side of the driving shaft, the movable rings slide along the radial direction of the driving shaft, and the circumferential side of the movable rings is fixedly connected to the top of the internal gear through four second connecting rods arranged along the circumference, the movable rings are located between the third transmission ring and the fourth transmission rings and are provided with a first circular through hole matched with the first connecting column;

[0012] The bottom of the first transmission ring, the top of the second transmission ring, the top of the third transmission ring, and the bottom of the fourth transmission ring are all provided with six arc grooves along a circumferential array, and the central angle of the arc groove is greater than or equal to 30°;

[0013] It also includes an adjustment mechanism for switching the transmission mechanism between three positions, and the adjustment mechanism drives the movable member to slide along the axial direction of the drive shaft;

[0014] That is, when the first transmission ring and the third transmission ring are engaged, it is the first working position; when the first transmission ring and the third transmission ring, and the fourth transmission ring and the second transmission ring are not engaged, it is the second working position; when the fourth transmission ring and the second transmission ring are engaged, it is the third working position;

[0015] Preferably, the main stirring component includes a main stirring column fixedly mounted on the lower surface of the first spur gear, a plurality of main stirring rods arranged in a spiral shape are fixedly connected to the circumference of the main stirring column, and a stirring spiral belt is fixedly connected to the ends of the plurality of main stirring rods.

[0016] Preferably, the driving mechanism comprises a motor, a driving shaft is fixedly mounted on the output end of the motor, and the end of the driving shaft drives a gear set to rotate.

[0017] Preferably, the gear set includes a first spur gear fixedly mounted on the end of the drive shaft;

[0018] A slideway with an annular structure is fixedly installed on the upper surface of the first spur gear, a first slider with the axis of the first spur gear as a rotation axis is rotatably arranged on the slideway, a first connecting rod with an L-shaped structure is fixedly connected to the top of the first slider, and the bottom of the first connecting rod is rotatably connected to the second spur gear and the third spur gear respectively;

[0019] The first spur gear is meshed with the second spur gear, the second spur gear is meshed with the third spur gear, the third spur gear is meshed with an internal gear, and the internal gear is rotatably arranged on the inner wall of the housing;

[0020] The first spur gear drives the main stirring member to rotate, the second spur gear drives the auxiliary stirring member to rotate, and the third spur gear drives the wall scraping member to rotate.

[0021] Preferably, the adjustment mechanism comprises a sliding ring that slides radially along the third transmission ring, the sliding ring is rotatably arranged on the circumferential side of the third transmission ring through a one-way bearing, and the rotation direction of the sliding ring is opposite to the rotation direction of the motor output end;

[0022] A connecting block is fixedly connected to the circumference of the sliding ring, and a lifting pipe of an L-shaped structure is fixedly connected to one side of the connecting block;

[0023] It also includes a base for placing the shell, a screw with an axis parallel to the axis of the sliding ring is rotatably provided on the upper surface of the base, a lifting plate is threadedly connected to the circumferential side of the screw, a second slider with the axis of the third transmission ring as the rotation axis is slidably provided on the upper surface of the lifting plate, the top of the second slider is fixedly connected to one end of the lifting tube, and two guide columns penetrating the lifting plate are fixedly connected to the upper surface of the base.

[0024] Preferably, the auxiliary stirring member comprises an auxiliary stirring column fixedly mounted on the lower surface of the second spur gear, and a row of stirring impellers are fixedly mounted on the circumference of the auxiliary stirring column.

[0025] Preferably, the wall scraping component comprises a wall scraping column fixedly mounted on the lower surface of the third spur gear, and a plurality of wall scraping plates are arranged in a circumferential array on the circumference of the wall scraping column.

[0026] (III) Beneficial effects

[0027] The present invention provides a reaction kettle for preparing a polycarboxylate water reducer. It has the following beneficial effects:

[0028] (1) The reactor for preparing polycarboxylic acid water-reducing agent can switch the transmission mechanism among three working positions through the setting of the adjustment mechanism, so that the main stirring member, the auxiliary stirring member and the scraping member can provide a stirring mode and stirring intensity suitable for the process in different processes, thereby meeting the production needs of the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the shell structure of the present invention;

[0032] Figure 4 It is a schematic diagram of the driving mechanism of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the third slider of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the first sliding block of the present invention;

[0035] Figure 7 It is a schematic diagram of the structure of the movable component of the present invention;

[0036] Figure 8 It is an exploded view of the movable component of the present invention;

[0037] Fig. 9 It is a schematic diagram of the structure of the regulating mechanism of the present invention;

[0038] Fig.10 This is a schematic diagram of the lifting plate structure of the present invention;

[0039] Fig.11 It is a schematic diagram of the structure of the second sliding block of the present invention;

[0040] Fig.12 It is a cross-sectional view of the lead screw structure of the present invention;

[0041] Fig.13 This is a schematic diagram of the first working station of the present invention;

[0042] Fig.14 This is a schematic diagram of the second workstation of the present invention;

[0043] Fig.15 This is a schematic diagram of the third workstation of the present invention.

[0044] In the figure: 1, housing; 2, motor; 3, drive shaft; 4, first spur gear; 5, slideway; 6, first slider; 7, first connecting rod; 8, second spur gear; 9, third spur gear; 10, internal gear; 11, first transmission ring; 12, second transmission ring; 13, third transmission ring; 14, fourth transmission ring; 15, first connecting column; 16, movable ring; 17, second connecting rod; 18, sliding ring; 19, connecting block; 20, lifting tube; 2 1. Base; 22. Screw; 23. Lifting plate; 24. Second slider; 25. Guide column; 26. Main stirring column; 27. Main stirring rod; 28. Stirring ribbon; 29. ​​Auxiliary stirring column; 30. Stirring impeller; 31. Scraping column; 32. Scraping plate; 33. First support frame; 34. Mounting frame; 35. Third slider; 36. Limiting cylinder; 37. Second support frame; 38. Handle; 39. Fixed sleeve; 40. Rotating block; 41. Limiting ring. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1-15 The present invention provides a technical solution: a reaction kettle for preparing a polycarboxylate water-reducing agent, comprising a shell 1, three supporting legs are arranged at the bottom of the shell 1, and a main stirring member, an auxiliary stirring member, and a wall scraping member are rotatably arranged inside the shell 1;

[0047] A driving mechanism for driving the main stirring member, the auxiliary stirring member and the wall scraping member to rotate is provided on the top of the shell 1;

[0048] It also includes a transmission mechanism installed on the driving mechanism, the transmission mechanism includes a first transmission ring 11 fixedly installed on the peripheral side of the driving shaft 3;

[0049] a second transmission ring 12 fixedly mounted on the upper surface of the first spur gear 4;

[0050] A set of movable components arranged on the peripheral side of the driving shaft 3, the movable components slide along the axial direction of the driving shaft 3, the movable components are located between the first transmission ring 11 and the second transmission ring 12, and the top of the movable components matches with the bottom of the first transmission ring 11, and the bottom of the movable components matches with the top of the second transmission ring 12;

[0051] The movable component includes a third transmission ring 13 and a fourth transmission ring 14 which are arranged opposite to each other, and two first connecting columns 15 which are arranged opposite to each other are fixedly connected between the third transmission ring 13 and the fourth transmission ring 14;

[0052] It also includes a set of movable rings 16 arranged on the circumferential side of the driving shaft 3, the movable rings 16 slide along the radial direction of the driving shaft 3, and the circumferential side of the movable rings 16 is fixedly connected to the top of the internal gear 10 through four second connecting rods 17 arranged along the circumference, the movable ring 16 is located between the third transmission ring 13 and the fourth transmission ring 14 and is provided with a first circular through hole matched with the first connecting column 15;

[0053] The bottom of the first transmission ring 11, the top of the second transmission ring 12, the top of the third transmission ring 13, and the bottom of the fourth transmission ring 14 are all provided with six arc grooves along the circumferential array, and the central angle of the arc groove is greater than or equal to 30°. After the arc groove is provided, a protrusion matching the arc groove is generated. If the central angle of the arc groove is too small, the protrusion cannot be inserted into the arc groove or is difficult to be inserted into the arc groove, which is inconvenient to use. If the central angle of the arc groove is too large, the bite is not firm enough, and the protrusion is prone to breakage, which has certain safety hazards. The central angle of the arc groove used in the present invention is 35°, which ensures that the first transmission ring 11 and the third transmission ring 13 can bite, and the fourth transmission ring 14 and the second transmission ring 12 can bite, and the protrusion is easier to be inserted into the arc groove;

[0054] It also includes an adjustment mechanism for switching the transmission mechanism between three positions, and the adjustment mechanism drives the movable member to slide along the axial direction of the drive shaft 3;

[0055] That is, when the first transmission ring 11 and the third transmission ring 13 are engaged, it is the first working position; when the first transmission ring 11 and the third transmission ring 13, the fourth transmission ring 14 and the second transmission ring 12 are not engaged, it is the second working position; when the fourth transmission ring 14 and the second transmission ring 12 are engaged, it is the third working position;

[0056] The main stirring member includes a main stirring column 26 fixedly mounted on the lower surface of the first spur gear 4 , a plurality of main stirring rods 27 arranged in a spiral shape are fixedly connected to the circumference of the main stirring column 26 , and a stirring spiral belt 28 is fixedly connected to the ends of the plurality of main stirring rods 27 .

[0057] Among them, the driving mechanism includes a motor 2, the model of which is Y180M-2, and a first support frame 33 is fixedly installed on the upper surface of the base 21. The first support frame 33 includes a first support plate, and two first support columns of L-shaped structure are fixedly connected on both sides of the first support plate. The first support column is fixedly installed on the upper surface of the base 21, and the upper surface of the first support plate is fixedly connected to a mounting frame 34 for mounting the motor 2. The motor 2 is fixedly installed inside the mounting frame 34. The lower surfaces of the first support plate and the mounting frame 34 are both provided with a second circular through hole that matches the output end of the motor 2. A driving shaft 3 is fixedly installed on the output end of the motor 2, and the end of the driving shaft 3 drives a gear set to rotate.

[0058] The gear set includes a first spur gear 4 fixedly mounted on the end of the driving shaft 3;

[0059] A slideway 5 with an annular structure is fixedly installed on the upper surface of the first spur gear 4, and a first slider 6 with the axis of the first spur gear 4 as the rotation axis is rotatably provided on the slideway 5. The first slider 6 is a T-shaped structure, and a first slide groove with an annular structure is provided on the slideway 5. The first slide groove is a T-shaped structure matched with the first slider 6. A first connecting rod 7 with an L-shaped structure is fixedly connected to the top of the first slider 6. The bottom of the first connecting rod 7 is rotatably connected to the second spur gear 8 and the third spur gear 9 respectively. The bottom of the first connecting rod 7 is rotatably provided with a second connecting column and a third connecting column. The bottom end of the second connecting column is fixedly connected to the middle part of the upper surface of the second spur gear 8, and the bottom end of the third connecting column is fixedly connected to the middle part of the upper surface of the third spur gear 9.

[0060] The first spur gear 4 is meshed with the second spur gear 8, the second spur gear 8 is meshed with the third spur gear 9, the third spur gear 9 is meshed with an internal gear 10, the internal gear 10 is rotatably arranged on the inner wall of the housing 1, the inner wall of the housing 1 is provided with a second slide groove of a T-shaped structure, the peripheral side of the internal gear 10 is fixedly connected with a third slider 35 matched with the second slide groove, and the arrangement of the third slider 35 can prevent the internal gear 10 from being separated from the housing 1;

[0061] The first spur gear 4 drives the main stirring member to rotate, the second spur gear 8 drives the auxiliary stirring member to rotate, and the third spur gear 9 drives the wall scraping member to rotate.

[0062] Wherein, the adjustment mechanism includes a sliding ring 18 that slides radially along the third transmission ring 13, a third sliding groove of a T-shaped structure is opened on the peripheral side of the third transmission ring 13, the sliding ring 18 is a T-shaped structure, the sliding ring 18 is rotatably arranged on the peripheral side of the third transmission ring 13 through a one-way bearing, the outer wall of the one-way bearing is fixedly connected to the inner wall of the sliding ring 18, and the rotation direction of the sliding ring 18 is opposite to the rotation direction of the output end of the motor 2. The principle of the one-way bearing is the prior art and will not be elaborated. When the transmission mechanism rotates with the motor 2, the sliding ring 18 will not rotate, that is, the adjustment mechanism will not rotate with it;

[0063] A connecting block 19 is fixedly connected to the peripheral side of the sliding ring 18, and a lifting tube 20 of an L-shaped structure is fixedly connected to one side of the connecting block 19. The lifting tube 20 is a hollow tubular structure with a small weight, which is convenient for lifting. A rubber sleeve is glued to the peripheral side of the lifting tube 20, which is convenient for the staff to hold the lifting tube 20 and plays a role in preventing slipping;

[0064] It also includes a base 21 for placing the shell 1, and the shell 1 is also placed on the base 21. A screw 22 with an axis parallel to the axis of the sliding ring 18 is rotatably provided on the upper surface of the base 21. A handle 38 is fixedly connected to the top of the screw 22, and a rotating block 40 is fixedly connected to the bottom of the screw 22. A limiting ring 41 is sleeved on the circumference of the screw 22, and a limiting cylinder 36 is fixedly connected to the bottom of the limiting ring 41. The rotating block 40 rotates inside the limiting cylinder 36. A lifting plate 23 is threadedly connected to the circumference of the screw 22, and a second slider with the axis of the third transmission ring 13 as the rotation axis is slidably provided on the upper surface of the lifting plate 23. 24, the second slider 24 is a T-shaped structure, and the upper surface of the lifting plate 23 is provided with a fourth slide groove of an annular structure. The fourth slide groove is a T-shaped structure matched with the second slider 24. The top of the second slider 24 is fixedly connected to one end of the lifting tube 20. Due to the characteristics of the one-way bearing, when the staff slides the lifting tube 20 in one direction (the rotation direction of the output end of the motor 2), the sliding ring 18 will rotate with the movable component. When the lifting tube 20 is slid in another direction (the opposite direction of the rotation direction of the output end of the motor 2), the sliding ring 18 will rotate accordingly. In this way, the movable component can be rotated reciprocatingly, so that the movable component and the first A transmission ring 11 or a second transmission ring 12 is aligned, and two guide columns 25 penetrating the lifting plate 23 are fixedly connected to the upper surface of the base 21. The lifting plate 23 is provided with two third circular through holes matching the guide columns 25. The tops of the two guide columns 25 are fixedly connected with a second support frame 37. The second support frame 37 includes a second support plate fixedly connected to the tops of the two guide columns 25. The second support plate is fixedly connected with a second support column all around. The four second support columns are fixedly installed on the upper surface of the base 21. The second support plate is provided with a fourth circular through hole matching the lead screw 22. The upper surface of the second support plate is provided with a The guide groove matched with the guide column 25 has an arc-shaped structure. Two fixing sleeves 39 are fixedly connected to the upper surface of the second support plate. The guide column 25 is located inside the fixing sleeve 39. A fifth circular through hole is provided on the peripheral side of the fixing sleeve 39. Three threaded holes matching the fifth circular through hole are provided on the peripheral side of the guide column 25. The fixing sleeve 39 is fixedly connected to the guide column 25 by an adjusting bolt. The three threaded holes correspond to the first station, the second station and the third station from top to bottom. The staff can screw in the adjusting bolt and tighten it after moving the movable component to the desired station to prevent the lifting plate 23 from shaking when the reactor is working.

[0065] The auxiliary stirring member includes an auxiliary stirring column 29 fixedly mounted on the lower surface of the second spur gear 8 , and a row of stirring impellers 30 are fixedly mounted on the circumference of the auxiliary stirring column 29 .

[0066] The scraping component includes a scraping column 31 fixedly mounted on the lower surface of the third spur gear 9 , and a plurality of scraping plates 32 are arranged in a circumferential array on the circumference of the scraping column 31 .

[0067] First, the staff pours a variety of raw materials into the shell 1. At this time, the movable component is located in the third position, and the motor 2 is started. When the various raw materials are fully mixed into a polymerization monomer solution, the motor 2 is turned off; then, the staff unscrews the two adjusting bolts, holds the lifting tube 20 with one hand and slides it left and right, and at the same time holds the handle 38 with the other hand and tries to turn it. When the staff can turn the handle 38, the sliding lifting tube 20 is stopped, and the handle 38 is turned until the threaded hole above the guide column 25 is aligned with the fifth circular through hole on the fixing sleeve 39, and the two adjusting bolts are screwed in and tightened. At this time, the movable component is located in the first position, and the motor 2 is started. The initiator is dripped into the shell 1, and the motor 2 is turned off after the initiator is dripped; then, the staff unscrews the two adjusting bolts. Bolt, hold the lifting tube 20 with one hand and slide it left and right, and hold the handle 38 with the other hand and try to turn it. When the staff can turn the handle 38, stop sliding the lifting tube 20, turn the handle 38 until the threaded hole in the middle of the guide column 25 is aligned with the fifth circular through hole on the fixing sleeve 39, screw in and tighten the two adjusting bolts. At this time, the movable component is located in the second station, start the motor 2, and turn off the motor 2 after the stirring is completed. The staff can switch the transmission mechanism between the three stations, so that the main stirring component, the auxiliary stirring component, and the wall scraping component can provide a stirring method and stirring intensity suitable for the process in different processes, meet the production needs of the factory, and make the reactor for preparing the polycarboxylic acid water reducer more practical.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reaction kettle for preparing a polycarboxylate water-reducing agent, characterized in that: It comprises a shell (1), wherein a main stirring component, an auxiliary stirring component, and a wall scraping component are rotatably arranged inside the shell (1); The top of the shell (1) is provided with a driving mechanism for driving the main stirring member, the auxiliary stirring member and the wall scraping member to rotate; It also includes a transmission mechanism installed on the driving mechanism, the transmission mechanism including a first transmission ring (11) fixedly installed on the circumference of the driving shaft (3); a second transmission ring (12) fixedly mounted on the upper surface of the first spur gear (4); A set of movable components arranged on the peripheral side of the driving shaft (3), the movable components sliding along the axial direction of the driving shaft (3), the movable components being located between the first transmission ring (11) and the second transmission ring (12), and the top of the movable components matching with the bottom of the first transmission ring (11), and the bottom of the movable components matching with the top of the second transmission ring (12); The movable component comprises a third transmission ring (13) and a fourth transmission ring (14) which are arranged opposite to each other, and two first connecting columns (15) which are arranged opposite to each other are fixedly connected between the third transmission ring (13) and the fourth transmission ring (14); The movable ring (16) further comprises a set of movable rings (16) arranged on the circumferential side of the driving shaft (3), the movable ring (16) slides along the radial direction of the driving shaft (3), and the circumferential side of the movable ring (16) is fixedly connected to the top of the internal gear (10) through four second connecting rods (17) arranged along a circumferential array, the movable ring (16) is located between the third transmission ring (13) and the fourth transmission ring (14) and is provided with a first circular through hole matched with the first connecting column (15); The bottom of the first transmission ring (11), the top of the second transmission ring (12), the top of the third transmission ring (13), and the bottom of the fourth transmission ring (14) are all provided with six arc grooves in a circumferential array, and the central angle of the arc grooves is greater than or equal to 30°; It also includes an adjustment mechanism for switching the transmission mechanism between three working positions, wherein the adjustment mechanism drives the movable component to slide along the axial direction of the drive shaft (3); That is, when the first transmission ring (11) and the third transmission ring (13) are engaged, it is the first working position; when the first transmission ring (11) and the third transmission ring (13) and the fourth transmission ring (14) and the second transmission ring (12) are not engaged, it is the second working position; when the fourth transmission ring (14) and the second transmission ring (12) are engaged, it is the third working position; The main stirring member comprises a main stirring column (26) fixedly mounted on the lower surface of the first spur gear (4), a plurality of main stirring rods (27) arranged in a spiral shape are fixedly connected to the circumference of the main stirring column (26), and a stirring spiral belt (28) is fixedly connected to the ends of the plurality of main stirring rods (27).

2. The reaction kettle for preparing a polycarboxylate water-reducing agent according to claim 1, characterized in that: The driving mechanism comprises a motor (2), a driving shaft (3) being fixedly mounted on the output end of the motor (2), and the end of the driving shaft (3) driving a gear set to rotate.

3. The reaction kettle for preparing a polycarboxylate water-reducing agent according to claim 2, characterized in that: The gear set comprises a first spur gear (4) fixedly mounted on the end of the driving shaft (3); A slideway (5) with an annular structure is fixedly mounted on the upper surface of the first spur gear (4); a first slider (6) is rotatably arranged on the slideway (5) with the axis of the first spur gear (4) as the rotation axis; a first connecting rod (7) with an L-shaped structure is fixedly connected to the top of the first slider (6); and a second spur gear (8) and a third spur gear (9) are rotatably connected to the bottom of the first connecting rod (7); The first spur gear (4) is meshed with the second spur gear (8), the second spur gear (8) is meshed with the third spur gear (9), the third spur gear (9) is meshed with an internal gear (10), and the internal gear (10) is rotatably arranged on the inner wall of the housing (1); The first spur gear (4) drives the main stirring member to rotate, the second spur gear (8) drives the auxiliary stirring member to rotate, and the third spur gear (9) drives the wall scraping member to rotate.

4. The reaction kettle for preparing a polycarboxylate water-reducing agent according to claim 1, characterized in that: The adjustment mechanism comprises a sliding ring (18) which slides radially along the third transmission ring (13); the sliding ring (18) is rotatably arranged on the circumference of the third transmission ring (13) via a one-way bearing, and the rotation direction of the sliding ring (18) is opposite to the rotation direction of the output end of the motor (2); A connection block (19) is fixedly connected to the circumferential side of the sliding ring (18), and a lifting pipe (20) with an L-shaped structure is fixedly connected to one side of the connection block (19); The invention also comprises a base (21) for placing the shell (1), a screw (22) having an axis parallel to the axis of the sliding ring (18) being rotatably arranged on the upper surface of the base (21), a lifting plate (23) being threadedly connected to the circumferential side of the screw (22), a second slider (24) having the axis of the third transmission ring (13) as the rotation axis being slidably arranged on the upper surface of the lifting plate (23), the top of the second slider (24) being fixedly connected to one end of the lifting tube (20), and two guide columns (25) penetrating the lifting plate (23) being fixedly connected to the upper surface of the base (21).

5. The reaction kettle for preparing a polycarboxylate water-reducing agent according to claim 1, characterized in that: The auxiliary stirring member comprises an auxiliary stirring column (29) fixedly mounted on the lower surface of the second spur gear (8), and a row of stirring impellers (30) are fixedly mounted on the circumference of the auxiliary stirring column (29).

6. The reaction kettle for preparing a polycarboxylate water-reducing agent according to claim 1, characterized in that: The wall scraping component comprises a wall scraping column (31) fixedly mounted on the lower surface of the third spur gear (9), and a plurality of wall scraping plates (32) are arranged in a circumferential array on the circumference of the wall scraping column (31).

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