A polycarboxylic acid water reducing agent preparation batching device

Abstract

The utility model discloses a kind of polycarboxylate water reducing agent preparation batching devices, it is related to water reducing agent preparation equipment technical field.The utility model includes reation kettle and top cap, heating ring is fixedly sleeved on the outside of reation kettle, outlet valve is fixedly communicated with the lower end surface of reation kettle, sensor is arranged in reation kettle, top cap is covered in the upper end opening of reation kettle, feed pipe, air inlet pipe and drop pipe are communicated through in top cap, the drive electric output end fixedly sleeved with stirring shaft is set on the top cap upper end.The utility model passes through nitrogen from air inlet pipe into reation kettle, then pour water from feed pipe into reation kettle, the required macromer, main monomer and chain transfer agent are poured into reation kettle, start heating ring to carry out constant temperature reaction, avoid nitrogen to be insufficient to the reaction protection;By the driving motor on top cap drive, make stirring shaft the solution in reation kettle is stirred, the temperature and the pH value of solution in reation kettle are monitored in real time by sensor, convenient to implement control reaction.

Description

Technical Field

[0001] This utility model belongs to the technical field of water-reducing agent preparation equipment, and in particular relates to a polycarboxylate water-reducing agent preparation and batching device. Background Technology

[0002] Polycarboxylate superplasticizer is a high-performance concrete admixture, mainly used to improve concrete fluidity, reduce water consumption, and increase strength. In certain special construction situations, it is necessary to quickly adjust the superplasticizer formula according to the on-site concrete condition. When preparing polycarboxylate superplasticizer on-site, the main monomer, macromonomer, and chain transfer agent need to be dissolved in water, heated to 60-90℃, and the initiator solution is slowly added dropwise. The reaction is carried out under nitrogen protection for 4-8 hours to generate polycarboxylate copolymer, which is then neutralized to pH 6-8 with an alkaline substance. However, when using laboratory glass equipment to prepare the superplasticizer on-site with the construction team, the glass equipment, such as reaction vessels and condensers, is easily damaged by collisions, vibrations, or sudden temperature changes in the construction environment. Insufficient nitrogen protection can also lead to an increase in side reactions, resulting in low purity of the prepared polycarboxylate superplasticizer.

[0003] To address these issues, we provide a polycarboxylate superplasticizer preparation and batching apparatus. Utility Model Content

[0004] The purpose of this invention is to provide a preparation and mixing device for polycarboxylate superplasticizer. A feed pipe, an air inlet pipe, and a dripping pipe are connected to the top cover of the reactor. First, nitrogen gas is introduced into the reactor through the air inlet pipe. Then, water is poured into the reactor through the feed pipe. Next, the required macromonomer, main monomer, and chain transfer agent are poured into the reactor through the feed pipe and dissolved in the water. Finally, the heating ring is activated to maintain a constant temperature for the reaction, preventing insufficient protection of the reaction by nitrogen gas, which could lead to increased side reactions and also preventing the breakage of glassware. A drive motor on the top cover drives the stirring shaft to rotate, thus stirring the solution in the reactor. Simultaneously, sensors monitor the temperature and pH value of the solution in the reactor in real time, facilitating reaction control.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a polycarboxylate superplasticizer preparation and batching device, comprising a reaction vessel and a top cover. A heating ring is fixedly sleeved on the outside of the reaction vessel, and a discharge valve is fixedly connected to the lower end face of the reaction vessel. A sensor is installed inside the reaction vessel. The top cover is detachably placed over the upper opening of the reaction vessel. A feed pipe, an air inlet pipe, and a dripping pipe are connected through the top cover. The lower ends of the feed pipe, air inlet pipe, and dripping pipe all extend into the reaction vessel. A drive motor is installed at the upper end of the top cover, and the output end of the drive motor passes through the top cover. A stirring shaft is fixedly sleeved at the output end of the drive motor.

[0007] A further feature of this invention is that the sensor includes a pH detection end and a temperature detection end, a monitoring panel is fixedly installed on the outer side wall of the reactor, and the sensor is connected to the monitoring panel via a wire.

[0008] A further feature of this invention is that a bottom support ring is fixedly installed at the lower end of the reactor, and a set of support columns are fixedly arranged in a circumferential array on the lower end face of the bottom support ring.

[0009] A further feature of this invention is that the feed pipe has a valve chamber on the side wall above the top cover, and a ventilated one-way valve is slidably connected inside the valve chamber, with the one-way outlet end of the ventilated one-way valve facing upward.

[0010] A further feature of this invention is that a feed funnel is fixedly provided at the upper end of the feed pipe.

[0011] A further feature of this invention is that an air valve is provided on the side wall above the top cover of the air intake pipe.

[0012] A further feature of this invention is that the upper end of the dropper is fixedly connected to a graduated cylinder with an upward opening, the lower end of the graduated cylinder is connected to a suction filter tube, a piston is vertically slidably sleeved inside the graduated cylinder, and a pull rod is fixedly provided at the upper end of the piston.

[0013] A further feature of this invention is that a one-way filtration valve is provided in the upper end of the dripping tube and the upper end of the suction tube, respectively. The one-way opening of the one-way filtration valve in the dripping tube is downward, and the one-way opening of the one-way filtration valve in the suction tube is upward.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model has a feed pipe, an air inlet pipe, and a dropping pipe connected to the top cover of the reactor. First, nitrogen gas is introduced into the reactor through the air inlet pipe, then water is poured into the reactor through the feed pipe. Next, the required macromonomer, main monomer, and chain transfer agent are poured into the reactor through the feed pipe and dissolved in the water. Finally, the heating ring is activated to carry out a constant temperature heating reaction, which avoids insufficient protection of the reaction by nitrogen gas, which may lead to an increase in side reactions, and also avoids the situation where glass equipment is broken.

[0016] 2. This utility model uses a drive motor on the top cover to drive the stirring shaft to rotate, thereby stirring the solution in the reaction vessel. At the same time, the temperature and pH value of the solution in the reaction vessel are monitored in real time by a sensor, which facilitates the control of the reaction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a preparation and mixing device for a polycarboxylate superplasticizer.

[0019] Figure 2 This is a side sectional view of the reactor.

[0020] Figure 3 This is a schematic diagram of the top cover and the feed pipe.

[0021] Figure 4 This is a schematic diagram of the top cover and air intake pipe.

[0022] Figure 5 This is a side sectional view of the top cover and the dropper.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1-Reaction vessel, 101-Heating ring, 102-Discharge valve, 103-Sensor, 103a-pH detection end, 103b-Temperature detection end, 103c-Monitoring panel, 104-Bottom support ring, 104a-Support column, 2-Top cover, 201-Feed pipe, 201a-Pipe valve chamber, 201a-1-Ventilation check valve, 201b-Feed funnel, 202-Air inlet pipe, 202a-Air valve, 203-Drip pipe, 203a-Graduated cylinder, 203a-1-Suction filter pipe, 203a-2-Piston, 203a-3-Pull rod, 203b-Suction filter check valve, 204-Drive motor, 204a-Stirring shaft. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1, please refer to Figure 1 and Figure 2This invention relates to a preparation and mixing device for polycarboxylate superplasticizer, comprising a reaction vessel 1 and a top cover 2. A feed pipe 201, an air inlet pipe 202, and a dropping pipe 203 are connected to the top cover 2 of the reaction vessel 1. First, nitrogen gas is introduced into the reaction vessel 1 through the air inlet pipe 202. Then, water is poured into the reaction vessel 1 through the feed pipe 201. Next, the required macromonomer, main monomer, and chain transfer agent are poured into the reaction vessel 1 through the feed pipe 201 and dissolved in the water. Finally, the heating ring 101 is activated to maintain a constant temperature for the reaction, preventing insufficient protection of the reaction by nitrogen gas, which could lead to an increase in side reactions and also preventing the glassware from breaking. A drive motor 204 on the top cover 2 drives a stirring shaft 204a to rotate, thereby stirring the solution in the reaction vessel 1. Simultaneously, a sensor 103 monitors the temperature and pH value of the solution in the reaction vessel 1 in real time, facilitating reaction control.

[0027] Specifically, a heating ring 101 is fixedly sleeved on the outside of the reactor 1, a discharge valve 102 is fixedly connected to the lower end face of the reactor 1, a sensor 103 is installed inside the reactor 1, and a top cover 2 is detachably covered at the upper opening of the reactor 1. A feed pipe 201, an air inlet pipe 202, and a dripping pipe 203 are connected through the top cover 2. The lower ends of the feed pipe 201, the air inlet pipe 202, and the dripping pipe 203 all extend into the reactor 1. A drive motor 204 is installed at the upper end of the top cover 2, and the output end of the drive motor 204 passes through the top cover 2. A stirring shaft 204a is fixedly sleeved at the output end of the drive motor 204.

[0028] Furthermore, the sensor 103 includes a pH detection end 103a and a temperature detection end 103b. A monitoring panel 103c is fixedly installed on the outer side wall of the reactor 1. The sensor 103 is connected to the monitoring panel 103c via wires.

[0029] Furthermore, a bottom support ring 104 is fixedly installed at the lower end of the reactor 1, and a set of support columns 104a are fixedly arranged in a circumferential array on the lower end face of the bottom support ring 104.

[0030] The operation process in this embodiment is as follows:

[0031] First, nitrogen gas is introduced into the reactor 1 through the inlet pipe 202 to fill the reactor 1 with nitrogen gas. Then, water is poured into the reactor 1 through the feed pipe 201. Next, the required macromonomer, main monomer, and chain transfer agent are poured into the reactor 1 through the feed pipe 201 and dissolved in the water. Finally, the heating ring 101 is started to carry out a constant temperature heating reaction. The drive motor 204 drives the stirring shaft 204a to rotate, so that the stirring shaft 204a stirs the solution in the reactor 1. At the same time, the sensor 103 monitors the temperature in the reactor 1 and the pH value of the solution in real time to facilitate the control of the reaction.

[0032] Example 2, please refer to Figures 1 to 5Based on Example 1, a valve chamber 201a is provided on the side wall of the feed pipe 201, and a venting one-way valve 201a-1 is provided inside the valve chamber 201a. A graduated cylinder 203a is provided at the upper end of the dripping pipe 203, and a piston 203a-2 is vertically slidably sleeved inside the graduated cylinder 203a. By sleeved the venting one-way valve 201a-1 inside the feed pipe 201, when water is added to the reactor 1, nitrogen gas in the reactor 1 is discharged from the feed pipe 201. After the water addition is completed, the venting one-way valve 201a-1 prevents external air from entering the reactor 1. By adding the required ingredients to the graduated cylinder 203a, the piston 203a-2 is pushed down, so that the ingredients in the graduated cylinder 203a are slowly added to the reactor 1, thereby precisely controlling the reaction rate.

[0033] Specifically, the feed pipe 201 has a valve chamber 201a on the side wall above the top cover 2. A ventilated one-way valve 201a-1 is slidably connected inside the valve chamber 201a, and the one-way outlet end of the ventilated one-way valve 201a-1 faces upward.

[0034] Furthermore, a feed funnel 201b is fixedly provided at the upper end of the feed pipe 201.

[0035] Furthermore, the air intake pipe 202 is equipped with an air pipe valve 202a on the side wall above the top cover 2 to control the entry of nitrogen.

[0036] Furthermore, the upper end of the dropper 203 is fixedly connected to a graduated cylinder 203a with its opening facing upwards. The lower end of the graduated cylinder 203a is connected to a suction filter tube 203a-1. A piston 203a-2 is vertically slidably sleeved inside the graduated cylinder 203a. A pull rod 203a-3 is fixedly provided at the upper end of the piston 203a-2. The amount of ingredients added is controlled by the pull rod 203a-3.

[0037] Furthermore, a one-way filtration valve 203b is respectively installed in the upper end of the dripping tube 203 and the upper end of the suction tube 203a-1. The one-way opening of the one-way filtration valve 203b in the dripping tube 203 is downward, and the one-way opening of the one-way filtration valve 203b in the suction tube 203a-1 is upward.

[0038] The operation process in this embodiment is as follows:

[0039] After adding the macromonomer, main monomer, and chain transfer agent to reactor 1, close the gas valve 202a to stop the nitrogen flow. Place the container containing the initiator solution at the lower end of the suction tube 203a-1, pull the pull rod 203a-3 upwards to draw the initiator solution into the graduated cylinder 203a using the piston 203a-2, and push the pull rod 203a-3 downwards to quantitatively push the initiator solution into the dropping tube 203, allowing the initiator solution to react with the solvent in reactor 1. Liquid reaction; after the reaction is complete, place the container containing the alkaline solution at the lower end of the suction filter tube 203a-1, pull the pull rod 203a-3 upward to make the piston 203a-2 draw the alkaline solution into the graduated cylinder 203a, push the pull rod 203a-3 downward to push the alkaline solution quantitatively into the dropper 203, and monitor the pH value of the solution in the reaction vessel 1 through the monitoring panel 103c, and add the required alkaline solution according to the pH value.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A polycarboxylate superplasticizer preparation and batching device, comprising a reaction vessel (1) and a top cover (2), characterized in that: A heating ring (101) is fixedly sleeved on the outside of the reactor (1). A discharge valve (102) is fixedly connected to the lower end face of the reactor (1). A sensor (103) is installed inside the reactor (1). The top cover (2) is detachably covered at the upper opening of the reactor (1). A feed pipe (201), an air inlet pipe (202), and a dripping pipe (203) are connected through the top cover (2). The lower ends of the feed pipe (201), the air inlet pipe (202), and the dripping pipe (203) all extend into the reactor (1). A drive motor (204) is installed at the upper end of the top cover (2). The output end of the drive motor (204) passes through the top cover (2). A stirring shaft (204a) is fixedly sleeved at the output end of the drive motor (204).

2. The polycarboxylate superplasticizer preparation and batching device according to claim 1, characterized in that: The sensor (103) includes a pH detection end (103a) and a temperature detection end (103b). A monitoring panel (103c) is fixedly installed on the outer side wall of the reactor (1). The sensor (103) is connected to the monitoring panel (103c) via a wire.

3. The polycarboxylate superplasticizer preparation and batching device according to claim 2, characterized in that: The lower end of the reactor (1) is fixedly provided with a bottom support ring (104), and a set of support columns (104a) are fixedly arranged in a circumferential array on the lower end face of the bottom support ring (104).

4. The polycarboxylate superplasticizer preparation and batching device according to claim 1, characterized in that: The feed pipe (201) has a valve chamber (201a) on the side wall above the top cover (2). A ventilated one-way valve (201a-1) is slidably sleeved inside the valve chamber (201a), and the one-way outlet end of the ventilated one-way valve (201a-1) is upward.

5. The polycarboxylate superplasticizer preparation batching device according to claim 4, characterized in that: The upper end of the feed pipe (201) is fixed with a feed funnel (201b).

6. The polycarboxylate superplasticizer preparation batching device according to claim 5, characterized in that: The air inlet pipe (202) has an air pipe valve (202a) on the side wall above the top cover (2).

7. The polycarboxylate superplasticizer preparation and batching device according to claim 6, characterized in that: The upper end of the dropper (203) is fixedly connected to a graduated cylinder (203a) with its opening facing upwards. The lower end face of the graduated cylinder (203a) is connected to a suction filter (203a-1). A piston (203a-2) is vertically slidably sleeved inside the graduated cylinder (203a). A pull rod (203a-3) is fixedly provided at the upper end of the piston (203a-2).

8. The polycarboxylate superplasticizer preparation batching device according to claim 7, characterized in that: A one-way filtration valve (203b) is provided in the upper end of the dripping tube (203) and the upper end of the suction tube (203a-1). The one-way filtration valve (203b) in the dripping tube (203) has its one-way opening facing downwards, while the one-way filtration valve (203b) in the suction tube (203a-1) has its one-way opening facing upwards.

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