Conveying and uniform mixing device for preparing polycarboxylate superplasticizer

Abstract

The utility model relates to the technical field of preparation of polycarboxylate superplasticizers, in particular to a conveying and uniform mixing device for preparing a polycarboxylate superplasticizer. Comprising a first reaction kettle, a second reaction kettle, a conveying pipe, a bottom plate, an auxiliary mechanism, a sealing cover, a protective cover, a motor, a rotating shaft, a plurality of first stirring rods, a plurality of first cutting pieces, a conical hopper, an initiator adding pipe, a raw material adding pipe, a discharging pipe and an alkali solution adding pipe, the auxiliary mechanism comprises a driving gear and a plurality of auxiliary rods, and the auxiliary rods are provided with a plurality of second stirring rods; according to the bidirectional stirring device, through clockwise rotation of the rotating shaft and anticlockwise rotation of the auxiliary rods, the flowing range of fluid can be effectively improved under the action of bidirectional stirring, the dead zone phenomenon is reduced, and the stirring power is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polycarboxylate superplasticizer preparation, in particular to a conveying and mixing device for polycarboxylate superplasticizer preparation. Background Technique

[0002] Polycarboxylate superplasticizer is a high-performance superplasticizer and a cement dispersant in the application of cement concrete. It is widely used in projects such as highways, bridges, dams, tunnels, and high-rise buildings. According to the different main chain structures, polycarboxylate-based high-performance superplasticizer products can be divided into two categories: one is based on acrylic acid or methacrylic acid as the main chain, grafted with polyethers of different side chain lengths; the other is based on maleic anhydride as the main chain grafted with polyethers of different side chain lengths. Based on this, a series of high-performance superplasticizer products with different characteristics have been derived; before the appearance of polycarboxylate admixtures, there were lignosulfonate-based admixtures, naphthalene sulfonate formaldehyde condensates, acetone sulfonate formaldehyde condensates, amino sulfonate formaldehyde condensates, etc.; in the early 1980s, Japan took the lead in successfully developing polycarboxylate-based superplasticizers; the new generation of polycarboxylate-based high-performance superplasticizers overcame some drawbacks of traditional superplasticizers and had outstanding advantages such as low dosage, good slump retention performance, low concrete shrinkage rate, strong adjustability in molecular structure, great potential for high performance, and no use of formaldehyde during the production process; during the preparation process of polycarboxylate superplasticizers, the problem of insufficient solution reaction often occurs.

[0003] The prior art patent CN210646417U discloses a conveying and mixing device for polycarboxylate superplasticizer preparation, including a first reaction kettle and a second reaction kettle. The circumferential side of the first reaction kettle is provided with an initiator addition port and a number of raw material addition ports. One end of the first reaction kettle is connected to a motor, the motor is connected to a bearing, the bearing is arranged inside the first reaction kettle, and a number of stirring blades are arranged on the circumferential side of the bearing. The circumferential side of the second reaction kettle is provided with an alkali solution addition port and a discharge port, and a discharge valve is arranged on the circumferential side of the discharge port. The second reaction kettle is connected to a thermometer. This prior art ensures the stable temperature of the polycarboxylate superplasticizer by using a heating coil, enables the initiator to be quickly mixed with the solution through the use of sieve holes, has a fast reaction, and enables the rapid and sufficient mixing of the polycarboxylate superplasticizer through the use of a motor and a transition plate, improving production efficiency.

[0004] However, in the above structure, only the raw materials are stirred by the stirring blades alone, so that the raw materials cannot achieve the effect of sufficient and rapid fusion. Content of the Utility Model

[0005] The purpose of the utility model is to provide a conveying and mixing device for polycarboxylate superplasticizer preparation, aiming to solve the technical problem that in the above structure of the prior art, only the raw materials are stirred by the stirring blades alone, so that the raw materials cannot achieve the effect of sufficient and rapid fusion.

[0006] To achieve the above object, a conveying and mixing device for preparing polycarboxylate water reducer of the present utility model includes a first reaction kettle, a second reaction kettle, a conveying pipe, a bottom plate and an auxiliary mechanism. A sealing cover is arranged above the first reaction kettle. A protective cover is arranged on the sealing cover. A motor is arranged on the protective cover. A rotating shaft is arranged at the output end of the motor. A plurality of first stirring rods are arranged on the rotating shaft. A plurality of first slicers are arranged on the first stirring rods. And the rotating shaft is located inside the first reaction kettle. A conical hopper is arranged inside the first reaction kettle. An initiator adding pipe is arranged on the inner side of the first reaction kettle. And the initiator adding pipe extends to one side of the first reaction kettle. A raw material adding pipe is arranged on the other side of the first reaction kettle. The outer side of the second reaction kettle is communicated with a discharge pipe and an alkali solution adding pipe. The first reaction kettle and the second reaction kettle are both arranged on the bottom plate. And the first reaction kettle is communicated with the second reaction kettle through the conveying pipe. The auxiliary mechanism includes a driving gear and a plurality of auxiliary rods. A plurality of second stirring rods are arranged on the auxiliary rods. A plurality of second slicers are arranged on the second stirrers. One end of the auxiliary rod is provided with a driven gear. The driving gear is fixedly connected with the rotating shaft and sleeved on the end of the rotating shaft away from the plurality of first stirring rods. And it is also located inside the protective cover. The plurality of auxiliary rods are respectively rotatably connected with the sealing cover and located inside the first reaction kettle. The driven gear meshes with the driving gear and is located outside the driving gear. And it is also located inside the protective cover.

[0007] Wherein, two handles are arranged on the outer side of the sealing cover. Anti-slip sleeves are arranged on the handles.

[0008] Wherein, control valves are arranged at the discharge ends of the conveying pipe, the conical hopper and the discharge pipe.

[0009] Wherein, the conveying and mixing device for preparing polycarboxylate water reducer further includes a gas conveying mechanism. The gas conveying mechanism is arranged on the outer side of the first reaction kettle. And the initiator adding pipe is communicated with the gas conveying mechanism and located at the gas outlet end of the gas conveying mechanism.

[0010] Wherein, the conveying and mixing device for preparing polycarboxylate water reducer further includes a thermometer and a plurality of heaters. The thermometer is fixedly connected with the second reaction kettle and located on the outer side of the second reaction kettle. And the detection end of the thermometer extends into the second reaction kettle. The plurality of heaters are respectively fixedly connected with the second reaction kettle and located on the inner side of the second reaction kettle.

[0011] Among them, the gas delivery mechanism includes a blower, a bracket, and an extension plate. The blower is fixedly connected to the bracket and is located above the bracket. The initiator addition pipe is communicated with the blower and is located at the air outlet end of the blower. The bracket is fixedly connected to the extension plate and is located above the extension plate. The extension plate is fixedly connected to the first reaction kettle and is located outside the first reaction kettle.

[0012] A conveying and mixing device for preparing polycarboxylate water reducer of the present utility model includes a first reaction kettle, a second reaction kettle, a conveying pipe, a bottom plate, and an auxiliary mechanism. A sealing cover is arranged above the first reaction kettle. A protective cover is arranged on the sealing cover. A motor is arranged on the protective cover. An output end of the motor is provided with a rotating shaft. A plurality of first stirring rods are arranged on the rotating shaft. A plurality of first slicing blades are arranged on the first stirring rods. A conical hopper is arranged inside the first reaction kettle. An initiator addition pipe is arranged on the inner side of the first reaction kettle. A raw material addition pipe is arranged on the other side of the first reaction kettle. A discharge pipe and an alkali solution addition pipe are communicated with the outside of the second reaction kettle. The auxiliary mechanism includes a driving gear and a plurality of auxiliary rods. A plurality of second stirring rods are arranged on the auxiliary rods. A plurality of second slicing blades are arranged on the second stirring rods. A driven gear is arranged at one end of the auxiliary rod. By clockwise rotation of the rotating shaft, the plurality of auxiliary rods rotate counterclockwise. Under the action of two-way stirring, the flow range of the fluid can be effectively improved, the dead zone phenomenon is reduced, and the stirring power is increased. Brief Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 is a side view of the first embodiment of the present utility model.

[0015] Figure 2 is the Figure 1 cross-sectional view taken along line A-A in the present utility model.

[0016] Figure 3 is a schematic structural view of the auxiliary mechanism in the first embodiment of the present utility model.

[0017] Figure 4 is a three-dimensional view of the second embodiment of the present utility model.

[0018] Figure 5 is a side view of the second embodiment of the present utility model.

[0019] Figure 6 is the Figure 5 cross-sectional view of the B-B line in the present utility model.

[0020] 101 - First reaction kettle, 102 - Second reaction kettle, 103 - Delivery pipe, 104 - Bottom plate, 105 - Sealing cover, 106 - Motor, 107 - Rotating shaft, 108 - First stirring rod, 109 - First slicer, 110 - Conical hopper, 111 - Initiator addition pipe, 112 - Raw material addition pipe, 113 - Discharge pipe, 114 - Alkali solution addition pipe, 115 - Driving gear, 116 - Auxiliary rod, 117 - Second stirring rod, 118 - Second slicer, 119 - Driven gear, 120 - Handle, 121 - Anti-slip sleeve, 122 - Control valve, 123 - Protective cover, 201 - Thermometer, 202 - Heater, 203 - Blower, 204 - Bracket, 205 - Extension plate. Specific embodiments

[0021] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0022] First embodiment:

[0023] Please refer to Figures 1 to 3 , where Figure 1 is the side view of the first embodiment of the present utility model, Figure 2 is the Figure 1 cross-sectional view of the A-A line in the present utility model, Figure 3 is the structural schematic diagram of the auxiliary mechanism in the first embodiment of the present utility model.

[0024] The present utility model provides a conveying and mixing device for the preparation of polycarboxylate water reducer, including a first reaction kettle 101, a second reaction kettle 102, a delivery pipe 103, a bottom plate 104 and an auxiliary mechanism. The auxiliary mechanism includes a driving gear 115 and a plurality of auxiliary rods 116. Through the foregoing solution, the technical problem that only the raw materials are stirred by the stirring blades in the above structure, so that the raw materials cannot be fully and quickly fused, is solved.

[0025] For this specific embodiment, a sealing cover 105 is provided above the first reactor 101. A protective cover 123 is provided on the sealing cover 105. A motor 106 is provided on the protective cover 123. An output end of the motor 106 is provided with a rotating shaft 107. A plurality of first stirring rods 108 are provided on the rotating shaft 107. A plurality of first slicing blades 109 are provided on the first stirring rods 108. And the rotating shaft 107 is located inside the first reactor 101. A conical hopper 110 is provided inside the first reactor 101. An initiator adding pipe 111 is provided on the inner side of the first reactor 101. And the initiator adding pipe 111 extends to one side of the first reactor 101. A raw material adding pipe 112 is provided on the other side of the first reactor 101. A discharge pipe 113 and an alkali solution adding pipe 114 are communicated with the outside of the second reactor 102. The first reactor 101 and the second reactor 102 are both provided on the bottom plate 104. And the first reactor 101 is communicated with the second reactor 102 through the conveying pipe 103. Raw material solution is added through the raw material adding pipe 112. The raw materials are mixed under the action of the rotating shaft 107 and the auxiliary mechanism. Then they enter the bottom of the first reactor 101 through the conical hopper 110. An initiator is added to the initiator adding pipe 111 to cause the mixed solution to react. The conveying pipe 103 is opened. The reacted solution enters the second reactor 102. An alkali solution is added to the alkali solution adding pipe 114 to neutralize the mixed solution and keep the temperature stable. At this time, the polycarboxylate water reducing agent is prepared. The discharge pipe 113 is opened to discharge the polycarboxylate water reducing agent.

[0026] Wherein, a plurality of second stirring rods 117 are provided on the auxiliary rod 116. Second slicing blades 118 are provided on the second stirring rods. One end of the auxiliary rod 116 is provided with a driven gear 119. The driving gear 115 is fixedly connected to the rotating shaft 107 and sleeved on the rotating shaft 107 at a position away from the plurality of first stirring rods 108. And it is also located inside the protective cover 123. The plurality of auxiliary rods 116 are respectively rotatably connected to the sealing cover 105 and are located inside the first reactor 101. The driven gear 119 meshes with the driving gear 115 and is located outside the driving gear 115. And it is also located inside the protective cover 123. By clockwise rotation of the rotating shaft 107, the plurality of auxiliary rods 116 rotate counterclockwise. Under the action of two-way stirring, the flow range of the fluid can be effectively improved, the dead zone phenomenon is reduced, and the stirring power is increased.

[0027] Secondly, two handles 120 are provided on the outside of the sealing cover 105. Anti-slip sleeves 121 are provided on the handles 120. The sealing cover 105 can be easily disassembled and assembled through the handles 120, thus playing a role of saving effort.

[0028] Thirdly, control valves 122 are provided at the discharge ends of the conveying pipe 103, the conical hopper 110, and the discharge pipe 113. The discharge amounts of the conveying pipe 103, the conical hopper 110, and the discharge pipe 113 can be conveniently controlled through the control valves 122.

[0029] When the raw materials are fully stirred by using the present utility model, the motor 106 is started to drive the rotating shaft 107 to rotate clockwise. The driving gear 115 meshes with the driven gear 119, and the auxiliary rod 116 rotates counterclockwise under the action of the driven gear 119, so that the first stirring rod 108 and the first slicer 109 rotate clockwise, and the second stirring rod 117 and the second slicer 118 rotate counterclockwise. Under the action of two-way stirring, the flow range of the fluid can be effectively improved, the dead zone phenomenon is reduced, and the stirring power is increased. In this way, the technical problem that the raw materials cannot be fully and quickly fused only by the stirring blades in the above structure is solved.

[0030] The second embodiment is as follows:

[0031] On the basis of the first embodiment, please refer to Figures 4 to 6 , where Figure 4 is the three-dimensional view of the second embodiment of the present utility model, Figure 5 is the side view of the second embodiment of the present utility model, Figure 6 is the Figure 5 cross-sectional view taken along line B-B in

[0032] The present utility model provides a conveying and mixing device for the preparation of polycarboxylate water reducer, which further includes a gas conveying mechanism, a thermometer 201, and a plurality of heaters 202. The gas conveying mechanism includes a blower 203, a bracket 204, and an extension plate 205.

[0033] For this specific embodiment, the gas conveying mechanism is arranged outside the first reaction kettle 101, and the initiator addition pipe 111 is communicated with the gas conveying mechanism and is located at the air outlet end of the gas conveying mechanism.

[0034] Among them, the thermometer 201 is fixedly connected to the second reactor 102 and is located outside the second reactor 102, and the detection end of the thermometer 201 extends into the second reactor 102. A plurality of heaters 202 are respectively fixedly connected to the second reactor 102 and are located inside the second reactor 102. The thermometer 201 facilitates the detection of the temperature of the raw materials in the second reactor 102. At the same time, when used in conjunction with the plurality of heaters 202, it can avoid the situation of too high or too low temperature.

[0035] Secondly, the blower 203 is fixedly connected to the bracket 204 and is located above the bracket 204. The initiator addition pipe 111 is communicated with the blower 203 and is located at the air outlet end of the blower 203. The bracket 204 is fixedly connected to the extension plate 205 and is located above the extension plate 205. The extension plate 205 is fixedly connected to the first reactor 101 and is located outside the first reactor 101. By starting the blower 203, the blower 203 sends gas into the initiator addition pipe 111. At the same time, an initiator is added, and the initiator enters the bottom of the first reactor 101 along with the gas, so that the initiator can be fully mixed in the raw materials.

[0036] When using a conveying and mixing device for the preparation of polycarboxylate water reducer in this embodiment, the thermometer 201 facilitates the detection of the temperature of the raw materials in the second reactor 102. At the same time, when used in conjunction with the plurality of heaters 202, it can avoid the situation of too high or too low temperature. By starting the blower 203, the blower 203 sends gas into the initiator addition pipe 111. At the same time, an initiator is added, and the initiator enters the bottom of the first reactor 101 along with the gas, so that the initiator can be fully mixed in the raw materials.

[0037] The above-disclosed is only a preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of the rights of the present invention. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A conveying and mixing device for preparing polycarboxylate water-reducing agent, comprising a first reactor, a second reactor, a conveying pipe and a bottom plate, a sealing cover is arranged above the first reactor, a protective cover is arranged on the sealing cover, a motor is arranged on the protective cover, a rotating shaft is arranged at the output end of the motor, a plurality of first stirring rods are arranged on the rotating shaft, a plurality of first slices are arranged on the first stirring rod, and the rotating shaft is located in the first reactor, a conical bucket is arranged in the first reactor, an initiator addition pipe is arranged on the inner side of the first reactor, and the initiator addition pipe extends to one side of the first reactor, a raw material addition pipe is arranged on the other side of the first reactor, a discharge pipe and an alkali solution addition pipe are connected to the outer side of the second reactor, the first reactor and the second reactor are both arranged on the bottom plate, and the first reactor is connected to the second reactor through the conveying pipe, characterized in that It also includes auxiliary institutions; The auxiliary mechanism includes a driving gear and multiple auxiliary rods, the auxiliary rod is provided with multiple second stirring rods, the second stirring rod is provided with a second slice, one end of the auxiliary rod is provided with a driven gear, the driving gear is fixedly connected to the rotating shaft, and is sleeved on the end of the rotating shaft away from the multiple first stirring rods, and is also located in the protective cover, the multiple auxiliary rods are respectively rotatably connected to the sealing cover, and are located in the first reactor, the driven gear is meshed with the driving gear, and is located on the outside of the driving gear, and is also located in the protective cover.

2. The conveying and mixing device for preparing polycarboxylate water-reducing agent according to claim 1, characterized in that: Two handles are arranged on the outer side of the sealing cover, and anti-slip sleeves are arranged on the handles.

3. The conveying and mixing device for preparing polycarboxylate water-reducing agent according to claim 2, characterized in that: The conveying pipe, the conical bucket and the discharge end of the discharge pipe are all provided with control valves.

4. The conveying and mixing device for preparing polycarboxylate water-reducing agent according to claim 3, characterized in that: The conveying and mixing device for preparing polycarboxylate water-reducing agent also includes a gas conveying mechanism, which is arranged outside the first reactor, and the initiator addition pipe is connected to the gas conveying mechanism and is located at the gas outlet end of the gas conveying mechanism.

5. The conveying and mixing device for preparing polycarboxylate water-reducing agent according to claim 4, characterized in that: The conveying and mixing device for preparing polycarboxylate water-reducing agent also includes a thermometer and a plurality of heaters. The thermometer is fixedly connected to the second reactor and is located outside the second reactor, and the detection end of the thermometer extends into the second reactor. The plurality of heaters are respectively fixedly connected to the second reactor and are located inside the second reactor.

6. The conveying and mixing device for preparing polycarboxylate water-reducing agent according to claim 5, characterized in that: The gas delivery mechanism includes a blower, a bracket and an extension plate, the blower is fixedly connected to the bracket and is located above the bracket, the initiator addition pipe is connected to the blower and is located at the gas outlet end of the blower, the bracket is fixedly connected to the extension plate and is located above the extension plate, and the extension plate is fixedly connected to the first reactor and is located outside the first reactor.

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