Polycarboxylate superplasticizer pre-reactor

Abstract

The utility model discloses a polycarboxylic acid water reducing agent pre-reactor, which relates to the technical field of water reducing agent preparation and particularly comprises a reaction kettle, the bottom of the reaction kettle is supported by a plurality of supporting legs, the top of the reaction kettle is sealed by a top cover, and the upper end of the outer wall of the reaction kettle is respectively connected with a feed hopper and a feed pipe. A discharge pipe is arranged at the bottom of the reaction kettle; a stirring mechanism is rotationally connected into the reaction kettle, a plurality of first rotating shafts are rotationally connected to the top cover and are circumferentially distributed along the stirring mechanism, the bottoms of the first rotating shafts are fastened to the inner wall of the reaction kettle through bearing seats, the first rotating shafts are connected through a transmission mechanism, and the top of one first rotating shaft is fixedly connected with a first motor; and the first rotating shaft is coaxially connected with a grinding roller. The grinding roller and the annular blocks and the arc-shaped blocks on the surface of the grinding roller can be controlled to be matched, cakes moving between the annular blocks and the arc-shaped blocks are ground, and full mixing of raw materials is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of water reducer preparation, in particular to a polycarboxylic acid water reducer pre-reactor. Background Art

[0002] At present, the industrial production of polycarboxylic acid water reducers can adopt the monomer direct copolymerization method, first preparing the active macromonomer, and then the small monomer and the macromonomer are copolymerized in an aqueous solution under the initiation of an initiator. As the synthesis process of the macromonomer becomes increasingly mature and the types are increasing, this synthesis method has become the most commonly used method for the synthesis of polycarboxylic acid water reducers at this stage.

[0003] When the polycarboxylate water-reducing agent is prepared by the above method, the reactants are usually pre-reacted to promote a more efficient copolymerization reaction. However, during the pre-reaction process, the raw materials will agglomerate, including agglomeration of the raw materials themselves and agglomeration during the reaction. The agglomeration not only causes blockage of the device, but also reduces the quality of the mixed product. Therefore, we urgently need a polycarboxylate water-reducing agent pre-reactor that can effectively prevent agglomeration and blockage. Utility Model Content

[0004] In view of the fact that existing raw materials are prone to agglomeration during reaction, which not only causes device blockage but also reduces the quality after mixing, the utility model provides a polycarboxylic acid water-reducing agent pre-reactor, which has the advantages of being able to quickly process agglomerates and improving the quality of raw materials after mixing, thereby solving the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A polycarboxylate water-reducing agent pre-reactor comprises a reactor, the bottom of the reactor is supported by a plurality of legs, the top of the reactor is sealed by a top cover, a feed hopper and a feeding pipe are respectively connected to the upper end of the outer wall of the reactor, and a discharge pipe is arranged at the bottom of the reactor;

[0007] A stirring mechanism is rotatably connected in the reactor, and a plurality of first rotating shafts are rotatably connected on the top cover, the plurality of first rotating shafts are circumferentially distributed along the stirring mechanism, the bottoms of the first rotating shafts are fastened to the inner wall of the reactor through a bearing seat, the first rotating shafts are connected through a transmission mechanism, and a first motor is fixedly connected to the top of one of the first rotating shafts;

[0008] A grinding roller is coaxially connected to the first rotating shaft, and a plurality of annular blocks are equidistantly connected to the outer wall of the grinding roller from top to bottom. A plurality of arc blocks are equidistantly connected to the inner wall of the reactor from top to bottom. The arc blocks and the annular blocks are arranged at intervals, and adjacent annular blocks and arc blocks are gap-matched.

[0009] Optionally, the transmission mechanism includes a pulley fixedly connected to the first rotating shaft, and adjacent pulleys are connected by belts.

[0010] Optionally, the stirring mechanism includes a second rotating shaft rotatably connected between the top cover and the bottom of the reactor, the upper end of the second rotating shaft passes through the top of the top cover and is fixedly connected to a second motor, and a stirring rod is fixedly connected to the second rotating shaft located in the reactor.

[0011] Optionally, the bottom of the top cover is sealed by a mounting seat, and the first rotating shaft and the second rotating shaft pass through the mounting seat and are rotatably connected thereto, and the pulley and the belt are located in a space formed by the mounting seat and the top cover.

[0012] Optionally, a control box is fixedly connected to the outer wall of the reactor, a controller is arranged in the control box, and the first motor and the second motor are connected to the controller via wires.

[0013] Compared with the prior art, the utility model stirs and mixes the raw materials by rotating the second rotating shaft and the stirring rod, and controls the grinding roller and the annular blocks and arc blocks on its surface to cooperate to grind the lumps moving between the two, thereby ensuring sufficient mixing of the raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model.

[0015] Figure 2 This is a connection diagram of the arc block and the reactor of the utility model.

[0016] Figure 3 This is a connection diagram of the control box and the reactor of the utility model.

[0017] In the figure: 1, top cover; 2, first motor; 3, second motor; 4, mounting base; 5, stirring rod; 6, first rotating shaft; 7, second rotating shaft; 8, control box; 9, belt; 10, pulley; 11, feed hopper; 12, grinding roller; 13, annular block; 14, arc block; 15, discharge pipe; 16, bearing seat; 17, reactor; 18, support leg; 19, feeding pipe. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 3The utility model provides a technical solution: a polycarboxylate water-reducing agent pre-reactor, comprising a reactor 17, the bottom of the reactor 17 is supported by a plurality of legs 18, and the top of the reactor 17 is sealed by a top cover 1, such as Figure 1 As shown, a feed hopper 11 and a feeding pipe 19 are respectively connected to the upper end of the outer wall of the reactor 17, and a discharge pipe 15 is arranged at the bottom of the reactor 17. In actual use, a sealing cover is installed on the top of the feed hopper 11 to prevent external impurities from entering the reactor 17, thereby ensuring the quality of the reactants. Solenoid valves for controlling feeding and discharging are installed on the feeding pipe 19 and the discharge pipe 15, thereby realizing automatic feeding and discharging operations.

[0020] like Figure 1 As shown, a stirring mechanism is rotatably connected in the reactor 17, and a plurality of first rotating shafts 6 are rotatably connected on the top cover 1, and the plurality of first rotating shafts 6 are circumferentially distributed along the stirring mechanism. The stirring mechanism includes a second rotating shaft 7 rotatably connected between the top cover 1 and the bottom of the reactor 17, and the upper end of the second rotating shaft 7 passes through the top of the top cover 1 and is fixedly connected to a second motor 3. Stirring rods 5 are fixedly connected to the second rotating shaft 7 in the reactor 17, and the stirring rods 5 are multiple groups, and each group of stirring rods 5 has multiple stirring rods 5 and are equidistantly arranged from top to bottom. At the same time, in order to improve the stirring efficiency, two groups of stirring rods 5 located at adjacent positions are arranged at intervals, so that the stirring rods 5 can fully mix and stir the materials in the reactor 17.

[0021] like Figure 2 , 3 As shown, the bottom of the first rotating shaft 6 is fastened to the inner wall of the reactor 17 through a bearing seat 16, and the first rotating shafts 6 are connected by a transmission mechanism. The transmission mechanism includes a pulley 10 fixedly connected to the first rotating shaft 6, and adjacent pulleys 10 are connected by a belt 9. A first motor 2 is fixedly connected to the top of one of the first rotating shafts 6. When the first motor 2 rotates, it drives the pulley 10 and the belt 9 to rotate simultaneously, so that the first rotating shaft 6 located in the reactor 17 rotates synchronously.

[0022] like Figure 2 As shown, a grinding roller 12 is coaxially connected to the first rotating shaft 6, and a plurality of annular blocks 13 are equidistantly connected to the outer wall of the grinding roller 12 from top to bottom. A plurality of arc blocks 14 are equidistantly connected to the inner wall of the reactor 17 from top to bottom. The arc blocks 14 and the annular blocks 13 are arranged at intervals, and the gaps between adjacent annular blocks 13 and arc blocks 14 are matched. The agglomerated material flows in the reactor 17 driven by the stirring rod 5. When the agglomerated raw materials move between the arc blocks 14 and the annular blocks 13, the relatively rotating annular blocks 13 and arc blocks 14 can grind the agglomerates, thereby achieving full mixing of the raw materials and the solution.

[0023] like Figure 1 ,2 As shown in Figure 3, in order to protect the belt 9 and the pulley 10, the bottom of the top cover 1 is sealed through the mounting seat 4, which can effectively extend the service life of the device, and the first rotating shaft 6 and the second rotating shaft 7 pass through the mounting seat 4 and are rotatably connected thereto, the pulley 10 and the belt 9 are located in the space formed by the mounting seat 4 and the top cover 1, and a control box 8 is fixedly connected to the outer wall of the reactor 17, and a controller is arranged in the control box 8, and the first motor 2 and the second motor 3 are connected to the controller through wires.

[0024] In summary, when the polycarboxylate water-reducing agent pre-reactor is used, the raw materials to be used are added into the reactor 17 through the feed hopper 11 and the feeding pipe 19, the second motor 3 drives the second rotating shaft 7 and the stirring rod 5 to rotate, and the raw materials are stirred and mixed, and the first motor 2 is controlled to drive the first rotating shaft 6 and the grinding roller 12 to rotate, and the annular block 13 on the surface of the grinding roller 12 cooperates with the arc block 14 on the inner wall of the reactor 17, and the agglomerates moved between the two can be ground, thereby ensuring the full mixing of the raw materials, not only avoiding the blockage of the device, but also improving the processing quality.

[0025] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0026] 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 polycarboxylate water-reducing agent pre-reactor, comprising a reaction kettle (17), the bottom of which is supported by a plurality of legs (18), characterized in that: The top of the reaction kettle (17) is sealed by a top cover (1), a feed hopper (11) and a feeding pipe (19) are respectively connected to the upper end of the outer wall of the reaction kettle (17), and a discharge pipe (15) is arranged at the bottom of the reaction kettle (17); A stirring mechanism is rotatably connected inside the reaction kettle (17), and a plurality of first rotating shafts (6) are rotatably connected on the top cover (1), the plurality of first rotating shafts (6) are circumferentially distributed along the stirring mechanism, the bottoms of the first rotating shafts (6) are fastened to the inner wall of the reaction kettle (17) via a bearing seat (16), the first rotating shafts (6) are connected via a transmission mechanism, and the top of one of the first rotating shafts (6) is fixedly connected to a first motor (2); A grinding roller (12) is coaxially connected to the first rotating shaft (6); a plurality of annular blocks (13) are equidistantly connected to the outer wall of the grinding roller (12) from top to bottom; a plurality of arc blocks (14) are equidistantly connected to the inner wall of the reaction kettle (17) from top to bottom; the arc blocks (14) and the annular blocks (13) are arranged at intervals, and adjacent annular blocks (13) and arc blocks (14) are gap-matched.

2. A polycarboxylate water-reducing agent pre-reactor according to claim 1, characterized in that: The transmission mechanism comprises a pulley (10) fixedly connected to a first rotating shaft (6), and adjacent pulleys (10) are connected via a belt (9).

3. A polycarboxylate water-reducing agent pre-reactor according to claim 2, characterized in that: The stirring mechanism comprises a second rotating shaft (7) rotatably connected between the top cover (1) and the bottom of the reaction kettle (17); the upper end of the second rotating shaft (7) passes through the top of the top cover (1) and is fixedly connected to a second motor (3); and a stirring rod (5) is fixedly connected to the second rotating shaft (7) located in the reaction kettle (17).

4. A polycarboxylate water-reducing agent pre-reactor according to claim 3, characterized in that: The bottom of the top cover (1) is sealed by a mounting seat (4), and a first rotating shaft (6) and a second rotating shaft (7) penetrate the mounting seat (4) and are rotatably connected thereto, and a pulley (10) and a belt (9) are located in a space formed by the mounting seat (4) and the top cover (1).

5. A polycarboxylate water-reducing agent pre-reactor according to any one of claims 1 to 3, characterized in that: A control box (8) is fixedly connected to the outer wall of the reaction kettle (17), a controller is arranged in the control box (8), and the first motor (2) and the second motor (3) are both connected to the controller via wires.

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