Polycarboxylate superplasticizer macromonomer dissolving device

Abstract

The utility model discloses a macromonomer dissolving device for a polycarboxylic acid water reducer. The macromonomer dissolving device comprises a dissolving tank, a feeding opening is formed in the upper end of the material dissolving tank; a negative pressure opening is formed in the upper end of the material dissolving tank, and a negative pressure pipe is connected to the negative pressure opening; the device further comprises a settling bin, the other end of the negative pressure pipe is communicated with the settling bin, and the upper end of the settling bin is connected with an exhaust pipe. And a stock bin door capable of being opened and closed is arranged on the settling bin. The material dissolving tank has the advantages that negative pressure is generated in the material dissolving tank by means of the chimney effect, so that inlet air is formed at the feeding port, dust in the material dissolving tank cannot flow backwards from the feeding port during feeding, and dust pollution of a workshop is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water reducing agent preparation equipment, in particular to a polycarboxylic acid water reducing agent macromonomer dissolving device. Background Art

[0002] In the concrete admixture industry, polycarboxylic acid-based high-efficiency water reducers have been widely used in high-performance concrete and self-compacting concrete to improve workability and enhance durability due to their excellent dispersibility and slump retention properties. The preparation process of such water reducers usually involves the polymerization reaction of multiple functional macromolecular monomers. At present, one of the key steps in the production of polycarboxylic acid water reducers is the dissolution and premixing stage of the macromonomer. The existing macromonomer dissolution process generally uses a specially designed dissolving device for operation. The traditional polycarboxylic acid water reducer macromonomer dissolving tank is generally made of stainless steel or a material with corrosion resistance, and a stirring device is provided inside to accelerate and evenly dissolve the macromonomer in a solvent (such as water). In order to facilitate the control of the reaction temperature of the polycarboxylic acid water reducer macromonomer dissolving device, the material is usually continuously fed manually. Since the material contains powder, it is inevitable that the powder will flow back from the feeding port and escape, causing environmental pollution in the workshop. Therefore, it is necessary to improve the existing polycarboxylic acid water reducer macromonomer dissolving device. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a polycarboxylic acid water-reducing agent macromonomer dissolving device.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A polycarboxylic acid water-reducing agent macromonomer dissolving device comprises a dissolving tank; a feeding port is arranged at the upper end of the dissolving tank; a negative pressure port is arranged at the upper end of the dissolving tank, and a negative pressure pipe is connected to the negative pressure port; it also comprises a sedimentation bin, the other end of the negative pressure pipe is connected to the sedimentation bin, and an exhaust pipe is connected to the upper end of the sedimentation bin; a silo door that can be opened and closed is arranged on the sedimentation bin.

[0006] Preferably, a valve is provided on the negative pressure tube.

[0007] Preferably, a filter screen is arranged in the sedimentation bin above the negative pressure pipe.

[0008] Preferably, an inspection door is provided on the side wall of the sedimentation bin, at the filter screen.

[0009] Preferably, the sedimentation bin is cylindrical.

[0010] Preferably, an observation window is provided on the sedimentation bin.

[0011] The above technical solution has the following advantages:

[0012] The utility model provides a sedimentation bin and relies on the chimney effect to achieve negative pressure in the dissolving tank, so that air inlet is formed at the feeding port, and then the dust in the dissolving tank will not flow back from the feeding port when feeding, thereby effectively reducing dust pollution in the workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model. The direction indicated by the arrow in the figure is the direction of air flow, and the rest is the same;

[0014] Figure 2 This is a schematic structural diagram of a second embodiment of the utility model;

[0015] In the figure: 1-dissolving tank, 2-feeding port, 3-negative pressure pipe, 4-sedimentation bin, 5-exhaust pipe, 6-bin door, 7-valve, 8-filter screen, 9-inspection door, 10-observation window. DETAILED DESCRIPTION

[0016] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0017] Example 1

[0018] As attached Figure 1 As shown, a polycarboxylic acid water-reducing agent macromonomer dissolving device comprises a dissolving tank 1; a feeding port 2 is arranged at the upper end of the dissolving tank 1; a negative pressure port is arranged at the upper end of the dissolving tank 1, and a negative pressure pipe 3 is connected to the negative pressure port; it also comprises a sedimentation bin 4, the other end of the negative pressure pipe 3 is connected to the sedimentation bin 4, and an exhaust pipe 5 is connected to the upper end of the sedimentation bin 4; a silo door 6 which can be opened and closed is arranged on the sedimentation bin 4.

[0019] As a technical solution for further improvement of the present embodiment, a valve 7 is provided on the negative pressure pipe 3. The flow rate of the air in the dissolving tank 1 can be achieved by adjusting the opening of the valve 7 according to different climatic conditions. The valve 7 is preferably a manual valve. For example, in summer, the temperature difference between indoor and outdoor air is large, and the chimney effect is obvious. At this time, the opening of the valve 7 can be appropriately reduced to avoid excessively fast air flow rate in the dissolving tank 1, which may cause some powdered materials to be taken out.

[0020] As a technical solution for further improvement of this embodiment, the sedimentation bin 4 is cylindrical, and obviously other shapes are also possible. In order to increase their lifespan, the sedimentation bin 4, the negative pressure pipe 3 and the exhaust pipe 5 are preferably made of plastic.

[0021] As a further improved technical solution of this embodiment, an observation window 10 is provided on the sedimentation bin 4 to facilitate observation of the sedimentation condition of the material in the sedimentation bin 4 .

[0022] Example 2

[0023] As shown in the attached figure, Figure 1 As shown, a polycarboxylic acid water-reducing agent macromonomer dissolving device, wherein a filter screen 8 is arranged in the sedimentation bin 4 above the negative pressure pipe 3, and the filter screen 8 can further absorb the dust formed by the material to improve the utilization rate of the material. The rest is basically the same as Example 1.

[0024] As a further improved technical solution of Example 2, an inspection door 9 is provided on the side wall of the sedimentation bin 4 at the filter screen 8. By opening the inspection door 9, the inspection and replacement of the filter screen 8 can be facilitated.

[0025] The utility model sets a sedimentation bin 4, and the exhaust pipe 5 of the sedimentation bin 4 should usually extend out of the top of the factory building, relying on the chimney effect to achieve negative pressure in the dissolving tank 1, so that air inlet is formed at the feeding port 2, and then the dust in the dissolving tank 1 will not flow back from the feeding port 2 during feeding, thereby effectively reducing the dust pollution in the workshop. After the dust-containing air enters the sedimentation bin 4, since the sedimentation bin has a large flow cross-section, the air flow rate is greatly slowed down at this time, and the dust material can settle at the bottom of the sedimentation bin 4 to achieve recycling.

[0026] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A polycarboxylate water-reducing agent macromonomer dissolving device, comprising a dissolving tank (1); a feeding port (2) is provided at the upper end of the dissolving tank (1); and the characteristics are: The upper end of the dissolving tank (1) is provided with a negative pressure port, and a negative pressure pipe (3) is connected to the negative pressure port; it also includes a sedimentation bin (4), the other end of the negative pressure pipe (3) is connected to the sedimentation bin (4), and the upper end of the sedimentation bin (4) is connected to an exhaust pipe (5); the sedimentation bin (4) is provided with a silo door (6) that can be opened and closed.

2. The polycarboxylate water-reducing agent macromonomer dissolving device according to claim 1, characterized in that: The negative pressure pipe (3) is provided with a valve (7).

3. The polycarboxylate water-reducing agent macromonomer dissolving device according to claim 1 or 2, characterized in that: A filter screen (8) is arranged in the sedimentation bin (4) above the negative pressure pipe (3).

4. The polycarboxylate water-reducing agent macromonomer dissolving device according to claim 3, characterized in that: An inspection door (9) is provided on the side wall of the sedimentation bin (4) at the filter screen (8).

5. The polycarboxylate water-reducing agent macromonomer dissolving device according to claim 1 or 2, characterized in that: The sedimentation bin (4) is cylindrical.

6. The polycarboxylate water-reducing agent macromonomer dissolving device according to claim 1 or 2, characterized in that: The sedimentation bin (4) is provided with an observation window (10).

7. The polycarboxylate water-reducing agent macromonomer dissolving device according to claim 3, characterized in that: The sedimentation bin (4) is provided with an observation window (10).

8. The polycarboxylate water-reducing agent macromonomer dissolving device according to claim 4, characterized in that: The sedimentation bin (4) is provided with an observation window (10).

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