Discharging equipment used in compounding process of polycarboxylate superplasticizer

Abstract

The utility model discloses discharging equipment used in the compounding process of a polycarboxylate superplasticizer, and relates to the technical field of compounding of polycarboxylate superplasticizers. A motor is detachably connected to the top of the supporting frame, a synthesis tank is detachably connected to the bottom of the motor, a feeding pipe is inserted into the top of the synthesis tank, a device base is fixedly connected to the bottom of the synthesis tank, a stirring shaft is detachably connected to the middle of the synthesis tank, and a plurality of stirring blades are inserted into the outer side wall of the stirring shaft. The stirring shaft rotates under the action of the motor, so that the stirring blade is driven to stir in the synthesis tank, the condition of precipitation or layering is avoided, the stirring blade is in a spiral shape from bottom to top, the top of the stirring blade expands outwards, and when the stirring blade rotates, a mixture is thrown up in a spiral shape in the synthesis tank, so that the stirring effect is improved. Wherein the arc-shaped scraping plate can scrape the mixture at the bottom, so that the mixture is stirred more uniformly, and solid particles are prevented from being deposited at the bottom of the container.

Description

Technical Field

[0001] The utility model relates to the technical field of polycarboxylate superplasticizer compounding, and particularly relates to a discharging device used in the process of polycarboxylate superplasticizer compounding. Background Art

[0002] Polycarboxylate superplasticizer is a high-performance superplasticizer and a cement dispersant used in cement concrete. It is widely used in projects such as highways, bridges, dams, tunnels, and high-rise buildings. This product is green, environmentally friendly, non-flammable, and non-explosive, and can be safely transported by train and truck. 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.

[0003] At present, after the polycarboxylate superplasticizer is prepared in a reaction kettle, it is discharged through a discharge port, filtered, and then other components are added for compounding to form the final product. Usually, a small amount of defoaming components, setting retarder components, air-entraining components, viscosity modification components, etc. are added during the compounding process to meet the requirements of different concrete technical performance. At the present stage, the filter screen installed at the discharge port is prone to blockage during long-term use due to unreasonable design, resulting in a decline in the filtering capacity of the filter screen, causing blockage at the discharge port and reducing the discharging efficiency.

[0004] Chinese patent document CN221274103U discloses a polycarboxylate superplasticizer discharging device that is not easily blocked, including an upper shell and a lower shell. The upper shell communicates with the lower shell, and the upper shell and the lower shell cooperate to form a discharging cavity; by setting the shape of the filter screen as a hemispherical shape with the tip facing upwards, the filter residues on the filter screen can enter the edge of the filter screen under the action of their own gravity and the impact of the subsequent input materials, so that the filter residues on the filter screen can automatically enter the material receiving box without adhering to the filter screen. During long-term use, since the filter residues do not adhere to the filter screen, the filter screen is not easily blocked; however, there are still the following defects in the implementation process:

[0005] Although the device in the above-mentioned document can make the materials on the filter screen automatically enter the material receiving box without adhering to the filter screen by setting the shape of the filter screen as a hemispherical shape with the tip facing upwards, the device in the above-mentioned document cannot ensure that all components of the polycarboxylate superplasticizer are fully mixed. For the superplasticizer containing solid particles, to ensure that the solid particles do not deposit at the bottom of the container, at the present stage, when the polycarboxylate superplasticizer is discharged, it often causes uneven mixing or bubble generation due to too fast flow rate, resulting in too high air content in the concrete, thereby affecting the strength, workability, and durability of the concrete. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a discharging device for the compounding process of polycarboxylate water reducer, so as to solve the problem that the flow rate of polycarboxylate water reducer is too fast during discharging, resulting in the generation of bubbles and affecting the strength and durability of concrete as proposed in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the present utility model is:

[0008] A discharging device for the compounding process of polycarboxylate water reducer, including a support frame and a device base; a motor is fixedly connected to the top of the support frame, the device base is placed below the support frame, a synthesis tank is fixedly connected to the top of the device base, a feed pipe is inserted into the top of the synthesis tank, the output end of the motor extends into the interior of the synthesis tank and is fixedly connected to a stirring shaft, and a plurality of stirring blades are fixedly connected to the outer side wall of the stirring shaft; a discharging assembly, the discharging assembly is used to control the discharging flow rate of the polycarboxylate water reducer after compounding, and the discharging assembly is connected to the synthesis tank.

[0009] Adopting the above technical solution, the stirring shaft rotates under the action of the motor in this solution, thereby driving the stirring blades to stir in the synthesis tank to avoid precipitation or stratification.

[0010] A further improvement of the technical solution of the present utility model lies in that: a lightweight groove is provided at the middle position of the stirring blade, and an arc-shaped scraping plate is fixedly connected to the outer side wall of the stirring shaft.

[0011] Adopting the above technical solution, the stirring blades have a spiral-shaped contour from bottom to top and expand outward at the top. When the stirring blades rotate, the mixture is thrown up in a spiral shape inside the above-mentioned synthesis tank.

[0012] A further improvement of the technical solution of the present utility model lies in that: both the stirring blades and the arc-shaped scraping plate are spiral rigid structures.

[0013] Adopting the above technical solution, the arc-shaped scraping plate in this solution can scrape up the mixture at the bottom, making the mixture stirred more evenly and ensuring that solid particles will not deposit at the bottom of the container.

[0014] A further improvement of the technical solution of the present utility model lies in that: the discharging assembly includes a discharging groove fixedly connected to the outer side wall of the synthesis tank, a discharging port is provided on the side of the discharging groove close to the synthesis tank, a rotating piece is rotatably connected to the inner side wall of the discharging groove far from the discharging port, and arc-shaped limiting plates are symmetrically installed on the inner side wall of the discharging groove close to the rotating piece.

[0015] Adopting the above technical solution, the rotating piece can rotate inside the discharging groove in this solution. When the mixture enters the discharging groove through the discharging port, the mixture falls on the rotating piece and drives the rotating piece to rotate by gravity.

[0016] A further improvement of the technical solution of the present utility model lies in that: the outer side wall of the rotating sheet is provided with a rounded corner that bends inward.

[0017] With the above technical solution, the outer ring of the rotating sheet in this solution has a curved rounded corner. Therefore, the rotating sheet will rotate under the action of the gravity of the falling mixture, avoiding the phenomenon of uneven mixing when the polycarboxylate water reducer is discharged.

[0018] A further improvement of the technical solution of the present utility model lies in that: the discharging assembly further includes limiting baffles symmetrically installed on the inner side wall of the discharging groove. Limiting chutes are opened at the middle positions of the bottoms of the limiting baffles. Fixed bases are slidably connected to the inner side walls of the limiting chutes. Telescopic rods are rotatably connected to the inner side walls of the fixed bases; the limiting chutes are set to be T-shaped, and one end of the fixed base away from the telescopic rod is set to be a T-shaped structure that cooperates with the limiting chute. The limiting baffle is an L-shaped rigid structure with an inclined angle.

[0019] With the above technical solution, the limiting baffle in this solution is connected to the inner side wall of the discharging groove. The limiting baffle has an inclined angle. The two limiting baffles are in contact with each other. A telescopic rod is further provided at the bottom of the limiting baffle. The telescopic rod is fixed to the inner side wall of the discharging groove through the fixed base.

[0020] A further improvement of the technical solution of the present utility model lies in that: the limiting baffle is an L-shaped rigid structure with an inclined angle.

[0021] With the above technical solution, the fixed base can slide in the limiting chute at the bottom of the limiting baffle, ensuring that the limiting baffle can tilt smoothly. Under the action of this structure, the discharging speed of the mixture is slowed down, avoiding the generation of bubbles due to too fast speed, resulting in too high air content in the concrete, and further avoiding the phenomenon of affecting the strength, workability and durability of the concrete.

[0022] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0023] 1. The present utility model provides a discharging device for the compounding process of polycarboxylate water reducer. The stirring shaft is rotated under the action of the motor, thereby driving the stirring blades to stir in the synthesis tank, avoiding precipitation or stratification. The stirring blades are in a spiral shape profile from bottom to top and expand outward at the top. When the stirring blades rotate, the mixture is thrown up in a spiral shape inside the above-mentioned synthesis tank. The arc-shaped scraping plate can scrape up the mixture at the bottom, making the mixture more evenly stirred and ensuring that solid particles do not deposit at the bottom of the container.

[0024] 2. The present utility model provides a discharging device for the compounding process of polycarboxylate water reducer. The rotating plate can rotate inside the discharging trough. When the mixture enters the discharging trough through the discharging port, the mixture drops onto the rotating plate. Since the outer ring of the rotating plate has a curved fillet, the rotating plate will rotate under the action of the gravity of the falling mixture, avoiding the phenomenon of uneven mixing during the discharging of polycarboxylate water reducer.

[0025] 3. The present utility model provides a discharging device for the compounding process of polycarboxylate water reducer. The limiting baffle is connected to the inner side wall of the discharging trough. The limiting baffle is at an inclined angle, and the two limiting baffles are in contact with each other. A telescopic rod is also provided at the bottom of the limiting baffle. The telescopic rod is fixed to the inner side wall of the discharging trough through a fixed base. It should be noted that when the mixture enters from the discharging port onto the surface of the limiting baffle, the limiting baffle inclines downward and presses the telescopic rod to change its own length. Specifically, the fixed base can slide in the limiting chute at the bottom of the limiting baffle to ensure that the limiting baffle can incline smoothly. Under the action of this structure, the discharging speed of the mixture is slowed down, avoiding the generation of bubbles due to too fast speed, resulting in too high air content in the concrete, and further avoiding the phenomenon of affecting the strength, workability and durability of the concrete. Brief Description of the Drawings

[0026] The present utility model will be further described below with reference to the accompanying drawings.

[0027] Figure 1 is the overall structural schematic diagram of the present utility model;

[0028] Figure 2 is the sectional three-dimensional structural schematic diagram of the discharging trough in the present utility model;

[0029] Figure 3 is the sectional three-dimensional structural schematic diagram of the discharging trough, rotating plate and limiting baffle in the present utility model;

[0030] Figure 4 is the present utility model Figure 3 enlarged view at A in;

[0031] Figure 5 is the sectional structural schematic diagram of the discharging trough of the present utility model;

[0032] Figure 6 is the three-dimensional structural schematic diagram of the synthesis tank in the present utility model;

[0033] Figure 7 is the three-dimensional structural schematic diagram of the stirring shaft and stirring blades in the present utility model.

[0034] In the figure: 1, support frame; 2, motor; 3, synthesis tank; 4, feed pipe; 5, discharge chute; 6, device base; 7, discharge port; 8, arc-shaped limit plate; 9, rotating piece; 10, limit baffle; 11, telescopic rod; 12, limit chute; 13, fixed base; 14, stirring shaft; 15, stirring blade; 16, lightweight groove; 17, arc-shaped scraping plate. Specific embodiments

[0035] The following further elaborates on the present utility model in conjunction with embodiments:

[0036] Embodiment 1

[0037] As Figure 1 、 Figure 6 and Figure 7 shown, the present utility model provides a discharging device for the compounding process of polycarboxylate water reducer, including a support frame 1 and a device base 6; a motor 2 is fixedly connected to the top of the support frame 1, the device base 6 is placed below the support frame 1, a synthesis tank 3 is fixedly connected to the top of the device base 6, a feed pipe 4 is inserted into the top of the synthesis tank 3, the output end of the motor 2 extends into the interior of the synthesis tank 3 and is fixedly connected to a stirring shaft 14, and a plurality of stirring blades 15 are fixedly connected to the outer side wall of the stirring shaft 14.

[0038] In this embodiment, since the water reducer containing solid particles will deposit at the bottom of the container during the compounding process, the stirring shaft 14 rotates under the action of the motor 2, thereby driving the stirring blades 15 to stir in the synthesis tank 3 to avoid precipitation or stratification.

[0039] Embodiment 2

[0040] As Figure 6 and Figure 7 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, a lightweight groove 16 is provided at the middle position of the stirring blade 15, an arc-shaped scraping plate 17 is fixedly connected to the outer side wall of the stirring shaft 14, and both the stirring blade 15 and the arc-shaped scraping plate 17 are spiral rigid structures.

[0041] In this embodiment, the stirring blade 15 has a spiral shape profile from bottom to top and expands outward at the top. When the stirring blade 15 rotates, the mixture is thrown up in a spiral shape inside the above-mentioned synthesis tank 3. Among them, the arc-shaped scraping plate 17 can scrape up the mixture at the bottom, making the mixture stirred more evenly and ensuring that solid particles will not deposit at the bottom of the container.

[0042] Embodiment 3

[0043] As Figure 2 、 Figure 3 and Figure 5As shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the discharging assembly includes a discharging groove 5 fixedly connected to the outer side wall of the synthesis tank 3. A discharging port 7 is provided on one side of the discharging groove 5 close to the synthesis tank 3. A rotating sheet 9 is rotatably connected to the inner side wall of the discharging groove 5 away from the discharging port 7. Arc-shaped limiting plates 8 are symmetrically installed on the inner side wall of the discharging groove 5 close to the rotating sheet 9. The outer side wall of the rotating sheet 9 is provided with rounded corners that bend inward.

[0044] In this embodiment, due to the uneven mixing or bubble generation caused by too fast flow rate during discharging, the air content in the concrete is too high, which in turn affects the strength, workability and durability of the concrete. Therefore, the rotating sheet 9 provided can rotate inside the discharging groove 5. When the mixture enters the discharging groove 5 through the discharging port 7, the mixture falls on the rotating sheet 9. Since the outer ring of the rotating sheet 9 has curved rounded corners, the rotating sheet 9 will rotate under the action of the gravity of the falling mixture, avoiding the phenomenon of uneven mixing when the polycarboxylate water reducer is discharged.

[0045] Embodiment 4

[0046] As Figure 3 、 Figure 4 and Figure 5 As shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the discharging assembly further includes limiting baffles 10 symmetrically installed on the inner side wall of the discharging groove 5. Limiting chutes 12 are provided at the middle positions of the bottoms of the limiting baffles 10. Fixed bases 13 are slidably connected to the inner side walls of the limiting chutes 12. Telescopic rods 11 are rotatably connected to the inner side walls of the fixed bases 13; the limiting chutes 12 are provided in a T shape, and one end of the fixed base 13 away from the telescopic rod 11 is provided with a T-shaped structure for cooperating with the limiting chute 12. The limiting baffle 10 is a rigid L-shaped structure with an inclined angle.

[0047] In this embodiment, the limiting baffles 10 are connected to the inner side wall of the discharging groove 5. The limiting baffles 10 are at an inclined angle, and the two limiting baffles 10 are in contact with each other. The bottom of the limiting baffle 10 is also provided with telescopic rods 11. The telescopic rods 11 are fixed to the inner side wall of the discharging groove 5 through the fixed bases 13. It should be noted that when the mixture enters the surface of the limiting baffle 10 from the discharging port 7, the limiting baffle 10 inclines downward and compresses the telescopic rod 11 to change its own length. Specifically, the fixed base 13 can slide in the limiting chute 12 at the bottom of the limiting baffle 10 to ensure that the limiting baffle 10 can incline smoothly. Under the action of this structure, the discharging speed of the mixture is slowed down, avoiding the generation of bubbles due to too fast speed, resulting in too high air content in the concrete, and then affecting the strength, workability and durability of the concrete.

[0048] By means of the mutual cooperation between the provided limit baffle 10 and the rotating piece 9, while reducing the discharging speed of the polycarboxylate water reducer, the material can be secondarily mixed, making it more uniform and reducing the generation of bubbles.

[0049] The working principle of the discharging device used in the compounding process of the polycarboxylate water reducer will be specifically described below.

[0050] As Figures 1 - 7 shown, first, the required materials are injected into the synthesis tank 3 through the feed pipe 4. At this time, the stirring shaft 14 rotates under the action of the motor 2, thereby driving the stirring piece 15 to stir in the synthesis tank 3. It should be noted that the stirring piece 15 has a spiral-shaped contour from bottom to top and expands outward at the top. When the stirring piece 15 rotates, the mixture is thrown up in a spiral shape inside the above-mentioned synthesis tank 3. The arc-shaped scraping plate 17 can scrape up the mixture at the bottom, making the mixture stirred more evenly and ensuring that solid particles will not deposit at the bottom of the container. The provided limit baffle 10 is connected to the inner side wall of the discharge chute 5. The limit baffle 10 is at an inclined angle, and the two limit baffles 10 are in contact with each other. A telescopic rod 11 is also provided at the bottom of the limit baffle 10. The telescopic rod 11 is fixed to the inner side wall of the discharge chute 5 through the fixed base 13. It should be noted that when the mixture enters the discharge chute 5 from the discharge port 7 and reaches the surface of the limit baffle 10, the limit baffle 10 inclines downward and compresses the telescopic rod 11 to change its own length. Specifically, the fixed base 13 can slide in the limit chute 12 at the bottom of the limit baffle 10 to ensure that the limit baffle 10 can incline smoothly. Under the action of this structure, the discharging speed of the mixture is slowed down to avoid the generation of bubbles due to too fast a speed. Since the mixture may be unevenly mixed or bubbles may be generated due to too fast a flow rate during discharging, resulting in too high an air content in the concrete, which in turn affects the strength, workability, and durability of the concrete. Therefore, the provided rotating piece 9 can rotate inside the discharge chute 5. When the mixture enters the discharge chute 5 through the discharge port 7, the mixture falls on the rotating piece 9. Since the outer ring of the rotating piece 9 has a curved fillet, the rotating piece 9 will rotate under the action of the gravity of the falling mixture, avoiding the phenomenon of uneven mixing when the polycarboxylate water reducer is discharged.

[0051] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements made without departing from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A discharging device for the compounding process of polycarboxylate water reducer, comprising a support frame (1) and a device base (6); characterized in that: A motor (2) is fixedly connected to the top of the support frame (1). The device base (6) is placed below the support frame (1). A synthesis tank (3) is fixedly connected to the top of the device base (6). A feed pipe (4) is inserted into the top of the synthesis tank (3). The output end of the motor (2) extends into the synthesis tank (3) and is fixedly connected to a stirring shaft (14). A plurality of stirring blades (15) are fixedly connected to the outer side wall of the stirring shaft (14). A discharging assembly, which is used to control the discharging flow rate of the polycarboxylate superplasticizer after compounding, and the discharging assembly is connected to the synthesis tank (3).

2. The discharging device for the compounding process of polycarboxylate water reducer according to claim 1, characterized in that: A lightweight groove (16) is opened at the middle position of the stirring blade (15). An arc-shaped scraping plate (17) is fixedly connected to the outer side wall of the stirring shaft (14).

3. The discharging device for the compounding process of polycarboxylate water reducer according to claim 2, characterized in that: Both the stirring blade (15) and the arc-shaped scraping plate (17) are spiral rigid structures.

4. An discharging device for the compounding process of polycarboxylate water reducer according to claim 1, characterized in that: The discharging assembly includes a discharging groove (5) fixedly connected to the outer side wall of the synthesis tank (3). A discharging port (7) is opened on one side of the discharging groove (5) close to the synthesis tank (3). A rotating blade (9) is rotatably connected to the inner side wall of the discharging groove (5) far from the discharging port (7). Arc-shaped limiting plates (8) are symmetrically installed on the inner side wall of the discharging groove (5) close to the rotating blade (9).

5. The discharging device for the compounding process of polycarboxylate water reducer according to claim 4, characterized in that: The outer side wall of the rotating blade (9) is provided with an inwardly curved rounded corner.

6. An discharging device for the compounding process of polycarboxylate water reducer according to claim 4, characterized in that: The discharging assembly further includes limiting baffles (10) symmetrically installed on the inner side wall of the discharging groove (5). Limiting chutes (12) are opened at the middle positions of the bottoms of the limiting baffles (10). Fixed bases (13) are slidably connected to the inner side walls of the limiting chutes (12). A telescopic rod (11) is rotatably connected to the inner side wall of the fixed base (13). The limiting chute (12) is arranged in a T shape, and one end of the fixed base (13) far from the telescopic rod (11) is arranged in a T-shaped structure for cooperating with the limiting chute (12).

7. The discharging device for the compounding process of polycarboxylate water reducer according to claim 6, wherein: The limiting baffle (10) is an L-shaped rigid structure with an inclined angle.

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