CN111821939A - A kind of reaction kettle for the preparation of polycarboxylate water reducing agent - Google Patents

Abstract

The invention discloses a reaction kettle for preparing a polycarboxylate water reducing agent, which relates to the technical field of reaction kettles, and comprises a shell, a main stirring member, an auxiliary stirring member, a wall scraping member, a driving mechanism and a transmission mechanism. It is assembled to be movably set between the following three stations: the first station, the main stirring member, the auxiliary stirring member and the scraping member rotate synchronously, and the auxiliary stirring member and the scraping member are all synchronized with the axis of the main stirring member as the rotation axis. Revolution, the second station, the main stirring member, the auxiliary stirring member and the scraping member rotate synchronously, the third station, the main stirring member rotates, and both the auxiliary stirring member and the scraping member revolve synchronously with the axis of the main stirring member as the rotation axis . The reaction kettle used for the preparation of the polycarboxylate water-reducing agent, through the setting of the adjustment mechanism, the staff can switch the transmission mechanism between the three stations, providing the stirring mode and stirring intensity suitable for different processes, and meeting the factory's requirements. Production needs.

Description

A kind of reaction kettle for the preparation of polycarboxylate water reducing agent

technical field

The invention relates to the technical field of reaction kettles, in particular to a reaction kettle for preparing a polycarboxylate water-reducing agent.

Background technique

Water reducing agent 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; Polycarboxylate Superplasticizer is a high-performance water-reducing agent and a cement dispersant in the application of cement concrete. It is widely used in highways, bridges, dams, tunnels, high-rise buildings and other projects. This product is green and environmentally friendly. It is flammable and non-explosive, and can be safely transported by trains and cars. Reactors are usually used in the preparation of polycarboxylate superplasticizers.

The preparation process of polycarboxylate water-reducing agent is complicated and has multiple procedures, and there are different requirements for stirring mode and stirring intensity in different procedures. However, the existing reaction kettle for preparing polycarboxylate water-reducing agent cannot be The needs of different processes provide a stirring method and stirring intensity suitable for the process, which is difficult to meet the production needs of the factory.

SUMMARY OF THE INVENTION

(1) Technical problems solved

In view of the deficiencies of the prior art, the present invention provides a reaction kettle for the preparation of a polycarboxylate water reducer, which solves the problem that the existing reaction kettle for the preparation of the polycarboxylate water reducer cannot be provided suitable for the The stirring method and stirring intensity of the process are difficult to meet the production needs of the factory.

(2) Technical solutions

In order to achieve the above purpose, the present invention is achieved through the following technical solutions: a reaction kettle for the preparation of a polycarboxylate water-reducing agent, comprising a shell, and a main stirring member and an auxiliary stirring member are respectively rotated inside the shell. , scraping wall member, the top of the casing is provided with a driving mechanism that drives the main stirring member, the auxiliary stirring member, and the scraping wall member to rotate, and also includes a transmission mechanism installed on the driving mechanism, the transmission mechanism is assembled to The following three workstations are set in motion: in the first workstation, the main stirring member, the auxiliary stirring member, and the scraping member rotate synchronously, and the auxiliary stirring member and the scraping member both revolve synchronously with the axis of the main stirring member as the rotation axis, and the second In the station, the main stirring member, the auxiliary stirring member and the scraping member rotate synchronously, and in the third station, the main stirring member rotates, and the auxiliary stirring member and the scraping member both revolve synchronously with the axis of the main stirring member as the rotation axis.

Preferably, the drive mechanism includes a motor, a drive shaft is fixedly mounted on the output end of the motor, and the end of the drive shaft drives a gear set to rotate.

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

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

The first spur gear meshes with the second spur gear, the second spur gear meshes with the third spur gear, the third spur gear meshes with an internal gear, and the internal gear is rotatably arranged on the housing. the inner wall;

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.

Preferably, the transmission mechanism includes a first transmission ring fixedly installed on the peripheral side of the drive shaft;

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

A set of movable members arranged on the peripheral side of the drive shaft, the movable members slide along the axial direction of the drive shaft, the movable members are located between the first transmission ring and the second transmission ring, and the top of the movable member is in contact with the first transmission ring. The bottom of a transmission ring is matched with the bottom of the movable member and the top of the second transmission ring is matched.

Preferably, the movable member comprises a third transmission ring and a fourth transmission ring arranged oppositely, and two oppositely arranged first connecting columns are fixedly connected between the third transmission ring and the fourth transmission ring;

It also includes a set of movable rings arranged on the peripheral side of the drive shaft, the movable ring slides along the radial direction of the drive shaft, and the peripheral side of the movable ring is connected to the top of the internal gear through four second connecting rods arrayed along the circumference Fixed connection, the movable ring is located between the third transmission ring and the fourth transmission ring and has a first circular through hole matched with the first connection post;

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-shaped grooves along the circumferential array, and the central angle of the arc-shaped grooves greater than or equal to 30°.

Preferably, it also includes an adjustment mechanism for switching the transmission mechanism between the three workstations, and the adjustment mechanism drives the movable member to slide along the axial direction of the drive shaft;

That is, when the first transmission ring and the third transmission ring are engaged, it is the first station; when the first transmission ring and the third transmission ring, the fourth transmission ring and the second transmission ring are not engaged, it is the second station; The third station is when the fourth transmission ring is engaged with the second transmission ring.

Preferably, the adjustment mechanism includes a sliding ring that slides radially along the third transmission ring, the sliding ring is rotatably arranged on the peripheral side of the third transmission ring through a one-way bearing, and the rotation direction of the sliding ring is the same as that of the motor. The rotation direction of the output end is opposite;

A connecting block is fixedly connected to the peripheral side of the sliding ring, and an L-shaped lifting pipe is fixedly connected to one side of the connecting block;

It also includes a base for placing the housing, the upper surface of the base is rotatably provided with a lead screw whose axis is parallel to the axis of the sliding ring, the peripheral side of the lead screw is threadedly connected with a lifting plate, and the upper surface of the lifting plate is threaded. A second sliding block is slidably arranged with the axis of the third transmission ring as the rotation axis, the top of the second sliding block is fixedly connected with one end of the lifting pipe, and the upper surface of the base is fixedly connected with two guide columns penetrating the lifting plate .

Preferably, the main stirring member includes a main stirring column fixedly installed on the lower surface of the first spur gear, and a plurality of main stirring rods arranged in a spiral shape are fixedly connected to the peripheral side of the main stirring column. A stirring screw belt is fixedly connected to the end of the stirring rod.

Preferably, the auxiliary stirring member includes an auxiliary stirring column fixedly installed on the lower surface of the second spur gear, and a row of stirring impellers is fixedly installed on the peripheral side of the auxiliary stirring column.

Preferably, the wall scraping member includes a wall scraping column fixedly installed on the lower surface of the third spur gear, and a plurality of wall scraping plates are arrayed along the circumference of the wall scraping column.

(3) Beneficial effects

The invention provides a reaction kettle for preparing a polycarboxylate water reducer. Has the following beneficial effects:

(1) The reaction kettle used for the preparation of the polycarboxylate water reducing agent, through the setting of the adjustment mechanism, the staff can switch the transmission mechanism between the three stations, so that the main stirring member, the auxiliary stirring member and the wall scraping member are The stirring method and stirring intensity suitable for the process can be provided in different processes to meet the production needs of the factory.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the overall structure schematic diagram of the present invention;

3 is a schematic view of the structure of the casing of the present invention;

4 is a schematic diagram of the driving mechanism of the present invention;

5 is a schematic structural diagram of a third slider of the present invention;

6 is a schematic structural diagram of the first slider of the present invention;

Fig. 7 is the structural schematic diagram of the movable member of the present invention;

8 is an exploded view of the movable component of the present invention;

Fig. 9 is the structural schematic diagram of the adjustment mechanism of the present invention;

10 is a schematic structural diagram of the lifting plate of the present invention;

11 is a schematic structural diagram of the second slider of the present invention;

Figure 12 is a cross-sectional view of the lead screw structure of the present invention;

13 is a schematic diagram of the first station of the present invention;

14 is a schematic diagram of the second station of the present invention;

FIG. 15 is a schematic diagram of the third station of the present invention.

In the figure: 1, the housing; 2, the motor; 3, the drive shaft; 4, the first spur gear; 5, the slideway; 6, the first slider; 7, the first connecting rod; 8, the second spur gear; 9, the third spur gear; 10, the internal gear; 11, the first transmission ring; 12, the second transmission ring; 13, the third transmission ring; 14, the fourth transmission ring; 15, the first connecting column; 16, the activity ring; 17, the second connecting rod; 18, the sliding ring; 19, the connecting block; 20, the lifting pipe; 21, the base; 22, the lead screw; 23, the lifting plate; 24, the second slider; 25, the guide column; 26, the main stirring column; 27, the main stirring rod; 28, the stirring ribbon; 29, the auxiliary stirring column; 30, the stirring impeller; 31, the scraping column; 32, the scraping plate; 33, the first support frame; 34, 35, the third slider; 36, the limit cylinder; 37, the second support frame; 38, the handle; 39, the fixed sleeve; 40, the rotating block; 41, the limit ring.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-15, the present invention provides a technical solution: a reaction kettle for the preparation of polycarboxylate water-reducing agent, comprising a shell 1, the bottom of the shell 1 is provided with three supporting feet, the bottom of the shell 1 is A main stirring member, an auxiliary stirring member and a wall scraping member are respectively rotated and arranged inside;

The top of the housing 1 is provided with a driving mechanism that drives the rotation of the main stirring member, the auxiliary stirring member and the scraping member;

It also includes a transmission mechanism mounted on the drive mechanism, and the transmission mechanism is assembled to be movable between the following three workstations:

In the first station, the main stirring member, the auxiliary stirring member and the scraping member rotate synchronously, and the auxiliary stirring member and the scraping member both revolve synchronously with the axis of the main stirring member as the rotation axis;

In the second station, the main stirring member, the auxiliary stirring member and the scraping member rotate synchronously;

In 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 driving mechanism includes a motor 2, the model of which is Y180M-2, a first support frame 33 is fixedly mounted on the upper surface of the base 21, and the first support frame 33 includes a first support plate, the first support plate Both sides are fixedly connected with two L-shaped first support columns, the first support columns are fixedly installed on the upper surface of the base 21, and the upper surface of the first support plate is fixedly connected to the mounting frame 34 for installing the motor 2, the motor 2 is fixedly installed inside the mounting frame 34, the first support plate and the lower surface of the mounting frame 34 are both provided with a second circular through hole matched with the output end of the motor 2, and a drive shaft 3 is fixedly installed at the output end of the motor 2. , the end of the drive shaft 3 drives a gear set to rotate.

Wherein, the gear set includes a first spur gear 4 fixedly mounted on the end of the drive shaft 3;

A slideway 5 with an annular structure is fixedly mounted on the upper surface of the first spur gear 4, and a first slide block 6 is rotatably arranged on the slideway 5 with the axis of the first spur gear 4 as the rotation axis. The first slide block 6 is a T-shaped structure, the slideway 5 is provided with a first chute with an annular structure, the first chute is a T-shaped structure matched with the first slider 6, and the top of the first slider 6 is fixedly connected with an L-shaped structure. The first connecting rod 7, the bottom of the first connecting rod 7 is rotatably connected with a second spur gear 8 and a third spur gear 9, and 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 with 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 with the middle part of the upper surface of the third spur gear 9 ;

The first spur gear 4 meshes with the second spur gear 8 , the second spur gear 8 meshes with the third spur gear 9 , the third spur gear 9 meshes with an internal gear 10 , and the internal gear 10 is rotatably arranged on the housing 1 The inner wall of the housing 1 is provided with a second sliding slot with a T-shaped structure, and the peripheral side of the internal gear 10 is fixedly connected with a third sliding block 35 matched with the second sliding groove. The setting of the third sliding block 35 can be Prevent the internal gear 10 from separating from 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.

Wherein, the transmission mechanism includes a first transmission ring 11 fixedly installed on the peripheral side of the drive shaft 3;

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

A set of movable members arranged on the peripheral side of the drive shaft 3, the movable member slides along the axial direction of the drive shaft 3, the movable member is located between the first transmission ring 11 and the second transmission ring 12, and the top of the movable member is connected to the first transmission ring 12. The bottom of the ring 11 is matched with the bottom of the movable member and the top of the second transmission ring 12 is matched.

Wherein, the movable member includes a third transmission ring 13 and a fourth transmission ring 14 arranged oppositely, and two oppositely arranged first connecting columns 15 are fixedly connected between the third transmission ring 13 and the fourth transmission ring 14;

It also includes a set of movable rings 16 arranged on the peripheral side of the drive shaft 3. The movable ring 16 slides along the radial direction of the drive shaft 3, and the peripheral side of the movable ring 16 is connected to the internal gear through four second connecting rods 17 arrayed along the circumference. The top of 10 is fixedly connected, and 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-shaped grooves along the circumferential array, and the central angle of the arc-shaped grooves More than or equal to 30°, after the arc groove is opened, there will be a protrusion that matches the arc groove. 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. The arc groove When the central angle of the groove is too large, the occlusion is not strong enough, bulges and fractures are likely to occur, and there is a certain safety hazard. 13 can be engaged to ensure that the fourth transmission ring 14 and the second transmission ring 12 can be engaged, and the protrusions can be easily snapped into the arc groove.

Among them, it also includes an adjustment mechanism for switching the transmission mechanism between the three workstations, and the adjustment mechanism drives the movable member 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 station, and 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 first station. The second station is the third station when the fourth transmission ring 14 is engaged with the second transmission ring 12 .

The adjustment mechanism includes a sliding ring 18 that slides radially along the third transmission ring 13 , and a third sliding groove of a T-shaped structure is provided on the peripheral side of the third transmission ring 13 . The sliding ring 18 has a T-shaped structure, and the sliding ring 18 A one-way bearing is rotatably arranged on the peripheral side of the third transmission ring 13. The outer wall of the one-way bearing is fixedly connected with 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 is the prior art, without further elaboration, when the transmission mechanism rotates with the motor 2, the sliding ring 18 will not rotate, that is, the adjusting mechanism will not rotate with it;

The peripheral side of the sliding ring 18 is fixedly connected with a connecting block 19, and one side of the connecting block 19 is fixedly connected with a lifting pipe 20 with an L-shaped structure. There is a rubber sleeve attached to the side glue, which is convenient for the staff to hold the lift pipe 20 and has a non-slip effect;

It also includes a base 21 for placing the casing 1. The casing 1 is also placed on the base 21. The upper surface of the base 21 is rotatably provided with a lead screw 22 whose axis is parallel to the axis of the sliding ring 18, and the top of the lead screw 22 is fixedly connected. There is a handle 38, a rotating block 40 is fixedly connected to the bottom end of the lead screw 22, a limit ring 41 is sleeved on the peripheral side of the lead screw 22, and a limit cylinder 36 is fixedly connected to the bottom of the limit ring 41, and the rotating block 40 is in the limit The interior of the bit cylinder 36 rotates, and a lifting plate 23 is threadedly connected to the peripheral side of the lead screw 22. The upper surface of the lifting plate 23 is slidably provided with a second sliding block 24 with the axis of the third transmission ring 13 as the rotation axis. 24 is a T-shaped structure, the upper surface of the lifting plate 23 is provided with a fourth chute with an annular structure, the fourth chute is a T-shaped structure matched with the second sliding block 24, and the top of the second sliding block 24 is connected to the lifting pipe. One end of the 20 is fixedly connected. 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 together with the movable member. When sliding in the other direction (the opposite direction of the rotation direction of the output end of the motor 2), the sliding ring 18 will rotate along with it, so that the movable member can be rotated back and forth so that the movable member is aligned with the first transmission ring 11 or the second transmission ring 12, and the base The upper surface of 21 is fixedly connected with two guide posts 25 which penetrate through the lift plate 23, the lift plate 23 is provided with two third circular through holes which are matched with the guide posts 25, and the tops of the two guide posts 25 are fixedly connected with a second support Frame 37, the second support frame 37 includes a second support plate fixedly connected to the top of the two guide columns 25, a second support column is fixedly connected around the second support plate, and four second support columns are fixedly installed on the base 21 The upper surface of the second support plate is provided with a fourth circular through hole matched with the lead screw 22, and the upper surface of the second support plate is provided with a guide groove matched with the guide column 25, and the guide groove is an arc structure , the upper surface of the second support plate is fixedly connected with two fixed sleeves 39, the guide post 25 is located inside the fixed sleeve 39, the peripheral side of the fixed sleeve 39 is provided with a fifth circular through hole, and the peripheral side of the guide post 25 is provided with three A threaded hole matched with the fifth circular through hole, the fixing sleeve 39 is fixedly connected to the guide column 25 through an adjustment bolt, and the three threaded holes are connected to the first station, the second station, the third station from top to bottom. The bits correspond one by one, and the staff can screw in the adjusting bolts and tighten them after moving the movable components to the required positions, so as to prevent the lifting plate 23 from shaking when the reaction kettle is working.

Wherein, the main stirring member includes a main stirring column 26 fixedly installed on the lower surface of the first spur gear 4, and the peripheral side of the main stirring column 26 is fixedly connected with a number of main stirring rods 27 arranged in a spiral shape. Several main stirring rods 27 A stirring ribbon 28 is fixedly connected to the end of the .

The auxiliary stirring member includes an auxiliary stirring column 29 fixedly installed on the lower surface of the second spur gear 8 , and a row of stirring impellers 30 are fixedly installed on the peripheral side of the auxiliary stirring column 29 .

Wherein, the scraping member includes a scraping column 31 fixedly installed on the lower surface of the third spur gear 9 , and a plurality of scraping plates 32 are arrayed along the circumference of the circumference of the scraping column 31 .

First, the staff pours various raw materials into the shell 1, at this time the movable member is located at the third station, starts the motor 2, and turns off the motor 2 when the various raw materials are fully mixed into the polymerized monomer solution; then, the staff screw Lower the two adjusting bolts, hold the lift pipe 20 with one hand and slide it left and right, while the other hand holds the handle 38 and try to turn it. When the staff can turn the handle 38, stop sliding the lift pipe 20, and turn the handle 38 until it guides The threaded hole above the column 25 is aligned with the fifth circular through hole on the fixed sleeve 39, screw in and tighten the two adjusting bolts, at this time the movable member is at the first station, start the motor 2, and drop the initiator into the casing In 1, turn off the motor 2 after dripping the initiator; then, the staff unscrew the two adjusting bolts, hold the lifting tube 20 with one hand and slide it left and right, while the other hand holds the handle 38 and tries to turn it, when the work Personnel can stop sliding the lift pipe 20 when turning the handle 38, turn the handle 38 until the threaded hole in the middle of the guide post 25 is aligned with the fifth circular through hole on the fixing sleeve 39, screw in and tighten the two adjusting bolts, and the movable member At 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 member, the auxiliary stirring member and the scraping member can be in different positions. The stirring mode and stirring intensity suitable for the process are provided in the process of the invention, which satisfies the production needs of the factory, and makes the reaction kettle for the preparation of the polycarboxylate water reducer more practical.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. without more restrictions. An element defined by the phrase "comprising an... does not preclude the presence of additional identical elements in a process, method, article or apparatus comprising said element".

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

Claims (10)

1. A reaction kettle for the preparation of a polycarboxylate water-reducing agent, characterized in that it comprises a shell (1), and a main stirring member, an auxiliary stirring member, a scraper and a wall member; The top of the housing (1) is provided with a drive mechanism that drives the main stirring member, the auxiliary stirring member and the wall scraping member to rotate; It also includes a transmission mechanism mounted on the drive mechanism, and the transmission mechanism is assembled to be movably arranged between the following three workstations: In the first station, the main stirring member, the auxiliary stirring member and the scraping member rotate synchronously, and the auxiliary stirring member and the scraping member both revolve synchronously with the axis of the main stirring member as the rotation axis; In the second station, the main stirring member, the auxiliary stirring member and the scraping member rotate synchronously; In 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. 2. The reaction kettle for preparing a polycarboxylate water reducing agent according to claim 1, wherein the driving mechanism comprises a motor (2), and an output end of the motor (2) is fixedly installed with a A drive shaft (3), the end of the drive shaft (3) drives a gear set to rotate. 3. The reaction kettle for the preparation of a polycarboxylate water-reducing agent according to claim 2, wherein the gear set comprises a first spur gear (4) fixedly mounted on the end of the drive shaft (3). ); The upper surface of the first spur gear (4) is fixedly mounted with a slideway (5) with a ring-shaped structure, and a slideway (5) is rotatably provided with a shaft with the axis of the first spur gear (4) as the axis of rotation. A first sliding block (6), the top of the first sliding block (6) is fixedly connected with a first connecting rod (7) with an L-shaped structure, and the bottom of the first connecting rod (7) is rotatably connected with a second connecting rod (7). Second spur gear (8), third spur gear (9); The first spur gear (4) meshes with the second spur gear (8), the second spur gear (8) meshes with the third spur gear (9), and the third spur gear (9) meshes with the An internal gear (10) meshes with each other, 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 the preparation of a polycarboxylate water-reducing agent according to claim 1, wherein the transmission mechanism comprises a first transmission ring (11) fixedly installed on the peripheral side of the drive shaft (3). ); a second transmission ring (12) fixedly mounted on the upper surface of the first spur gear (4); A set of movable members arranged on the peripheral side of the drive shaft (3), the movable members slide along the axial direction of the drive shaft (3), and the movable members are located on the first transmission ring (11) and the second transmission ring (12) and the top of the movable member is matched with the bottom of the first transmission ring (11), and the bottom of the movable member is matched with the top of the second transmission ring (12). 5. The reaction kettle for the preparation of a polycarboxylate water-reducing agent according to claim 4, wherein the movable member comprises a third transmission ring (13) and a fourth transmission ring (14) arranged oppositely , and two oppositely arranged first connecting columns (15) are fixedly connected between the third transmission ring (13) and the fourth transmission ring (14); Also includes a set of movable rings (16) arranged on the peripheral side of the drive shaft (3), the movable ring (16) slides along the radial direction of the drive shaft (3), and the peripheral side of the movable ring (16) passes through Four second connecting rods (17) arrayed along the circumference are fixedly connected to the top of the internal gear (10), the movable ring (16) is located between the third transmission ring (13) and the fourth transmission ring (14) and A first circular through hole matching with the first connecting column (15) is opened; 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 arcs along the circumferential array shape groove, and the central angle of the arc-shaped groove is greater than or equal to 30°. 6. The reaction kettle for the preparation of a polycarboxylate water-reducing agent according to claim 5, characterized in that: it also comprises an adjustment mechanism for switching the transmission mechanism between three stations, and the adjustment mechanism drives the The movable member slides along the axial direction of the drive shaft (3); That is, when the first transmission ring (11) is engaged with the third transmission ring (13), it is the first station, and when the first transmission ring (11) and the third transmission ring (13), the fourth transmission ring (14) and The second station is when the second transmission rings (12) are not engaged, and the third station is when the fourth transmission ring (14) is engaged with the second transmission ring (12). 7. The reaction kettle for the preparation of polycarboxylate water-reducing agent according to claim 6, characterized in that: the adjustment mechanism comprises a sliding ring (18) that slides radially along the third transmission ring (13). , the sliding ring (18) is rotatably arranged on the peripheral side of the third transmission ring (13) through 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 connecting block (19) is fixedly connected to the peripheral side of the sliding ring (18), and a lifting pipe (20) having an L-shaped structure is fixedly connected to one side of the connecting block (19); Also includes a base (21) for placing the housing (1), the upper surface of the base (21) is rotatably provided with a lead screw (22) whose axis is parallel to the axis of the sliding ring (18), the lead screw ( A lifting plate (23) is threadedly connected to the peripheral side of 22). The upper surface of the lifting plate (23) is slidably provided with a second sliding block (24) whose axis of rotation is the axis of the third transmission ring (13). The top of the second sliding block (24) is fixedly connected with one end of the lift pipe (20), and the upper surface of the base (21) is fixedly connected with two guide columns (25) penetrating the lift plate (23). 8. The reaction kettle for the preparation of a polycarboxylate water-reducing agent according to claim 1, wherein the main stirring member comprises a main stirring column fixedly installed on the lower surface of the first spur gear (4). (26), the peripheral side of the main stirring column (26) is fixedly connected with a number of main stirring rods (27) arranged in a spiral shape, and the ends of the several main stirring rods (27) are fixedly connected with a stirring ribbon. (28). 9 . The reaction kettle for the preparation of polycarboxylate water reducing agent according to claim 1 , wherein the auxiliary stirring member comprises an auxiliary stirring column fixedly installed on the lower surface of the second spur gear ( 8 ). 10 . (29), a row of stirring impellers (30) is fixedly installed on the peripheral side of the auxiliary stirring column (29). 10. The reaction kettle for the preparation of a polycarboxylate water-reducing agent according to claim 1, wherein the wall scraping member comprises a wall scraping column fixedly installed on the lower surface of the third spur gear (9). (31), several wall scraping plates (32) are arrayed along the circumference of the wall scraping column (31).

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