A gypsum board production slurry mixing system

Abstract

The utility model discloses a gypsum board production slurry mixing system, including mixing kettle, be equipped with stirring structure in mixing kettle, and one side of mixing kettle top is equipped with feed pipe and liquid inlet pipe, and one end fixedly connected with liquid injection head of liquid inlet pipe, and the other side of mixing kettle top is provided with air inlet pipe and air outlet pipe, and the bottom of mixing kettle is provided with discharge pipe, and the outside of mixing kettle is equipped with first jacket, and first jacket is equipped with first jacket outlet pipe and first jacket inlet pipe, and the outside of first jacket is provided with second jacket, and second jacket is equipped with second jacket air outlet pipe and second jacket air inlet pipe, feed pipe is connected to powder mixing device, and powder mixing device is connected to powder bin, and liquid inlet pipe is connected to first jacket outlet pipe, and first jacket inlet pipe is connected to liquid supply system, and air inlet pipe is connected to gas supply system, and air outlet pipe is connected to second jacket air inlet pipe, and second jacket air outlet pipe is connected to atmosphere. The above can realize the preliminary mixing of powder and liquid material, and combine the waste heat recovery with liquid material preheating, improve the mixing quality.

Description

Technical Field

[0001] This utility model relates to the field of gypsum board production technology, and in particular to a gypsum board production slurry mixing system. Background Technology

[0002] In the production of gypsum board, the preparation of the slurry is one of the key steps, and its uniformity and stability directly affect the quality of the final product. Traditional gypsum board slurry mixing systems typically include a mixing vessel, a stirring device, and supporting feed and liquid inlet pipelines. The mixing system mechanically mixes powdered materials such as gypsum powder and additives with liquid materials, usually water, in the mixing vessel. During this process, the hydration reaction between gypsum and water releases a large amount of heat, causing the temperature inside the vessel to rise.

[0003] The existing technology has the following main shortcomings: First, the waste heat generated by the reaction is usually not effectively utilized, but is instead lost through the reactor or requires an additional cooling system, increasing production energy costs. Second, if powder and liquid materials are directly added to the reactor for primary stirring, dust, clumping, or uneven initial mixing can easily occur, affecting subsequent stirring efficiency and slurry homogeneity. Furthermore, to control the reaction temperature or meet process requirements, preheating of the liquid materials is often necessary, but traditional preheating methods are independent of the mixing system, usually requiring an external heat source, resulting in a complex system with low energy efficiency. Utility Model Content

[0004] To address the aforementioned shortcomings, this utility model provides a gypsum board production slurry mixing system that enables preliminary mixing of powder and liquid materials to reduce clumping, and integrates waste heat recovery with the liquid material preheating process to improve overall energy efficiency and mixing quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gypsum board production slurry mixing system, including a mixing vessel, a stirring structure inside the mixing vessel, a feed pipe and a liquid inlet pipe on one side of the top of the mixing vessel, a spray nozzle fixedly connected to one end of the liquid inlet pipe inside the mixing vessel, an air inlet pipe and an air outlet pipe on the other side of the top of the mixing vessel, a discharge pipe at the bottom of the mixing vessel, a first jacket on the outside of the mixing vessel, the first jacket having a first jacket outlet pipe and a first jacket inlet pipe, a second jacket fully enclosing the outside of the first jacket, the second jacket having a second jacket outlet pipe and a second jacket inlet pipe; The feed pipe is connected to the powder mixing device, the powder mixing device is connected to the powder silo, the liquid inlet pipe is connected to the first jacket outlet pipe through a pipe equipped with a liquid inlet pump, the first jacket inlet pipe is connected to the liquid supply system, the air inlet pipe is connected to the air supply system, the air outlet pipe is connected to the second jacket air inlet pipe through a pipe equipped with a vacuum pump, and the second jacket air outlet pipe is connected to the atmosphere.

[0006] As a further improvement of this utility model, the stirring structure includes a mixing motor fixedly connected to the center of the top of the mixing vessel, and the output end of the mixing motor is fixedly connected to a mixing shaft via a coupling. The mixing shaft is rotatably connected to the inside of the mixing vessel and fixedly connected to several mixing impellers.

[0007] As a further improvement of this utility model, a baffle is fixedly connected to the inner side wall of the mixing tank below the feed pipe, and a mixing groove is opened on the baffle. The spray head is fitted into the mixing groove.

[0008] As a further improvement of this utility model, one end of the mixing tank is provided with an opening, and the spray head faces the opening side of the mixing tank.

[0009] As a further improvement of this utility model, a thermometer sleeve is provided on one side of the first jacket, and the open end of the thermometer sleeve extends out of the second jacket.

[0010] As a further improvement of this utility model, a top cover is provided on the top of the feed pipe.

[0011] The beneficial effects of this utility model are: 1. A heat recovery path was constructed by coupling the exothermic reaction inside the mixing vessel with the preheating of the liquid path in the first jacket and the heat storage of the gas path in the second jacket. Specifically, a vacuum pump is used to introduce the hot gas inside the vessel after the reaction has heated up into the second jacket to store heat, while the liquid material to be entered into the vessel flows through the first jacket, allowing it to absorb the reaction heat conducted from the vessel wall and the excess heat transferred by the hot gas in the second jacket. This process converts the originally dissipated waste heat into preheating energy for the liquid material, reducing or eliminating dependence on external independent heat sources, lowering the heating energy consumption of slurry preparation, and improving the energy utilization efficiency of the production system.

[0012] 2. By setting a mixing tank below the feed pipe, the falling powder is collected; simultaneously, the spray nozzle is tilted and aimed at the opening of the mixing tank to spray atomized liquid, which washes and wets the powder in the tank. This design forces the powder to undergo preliminary premixing and wetting before it enters the main mixing zone, effectively reducing powder dust, preventing dry powder agglomeration, and creating uniform initial conditions for subsequent main mixing. This not only helps to shorten the main mixing time and improve mixing efficiency, but also ensures the homogeneity and stability of the slurry product. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the slurry mixing system for gypsum board production according to this utility model; Figure 2 This is a schematic diagram of the internal structure of the mixing vessel.

[0014] In the diagram: 1-mixing vessel, 101-discharge pipe, 102-liquid inlet pipe, 103-feed pipe, 104-air outlet pipe, 105-air inlet pipe, 2-first jacket, 201-first jacket outlet pipe, 202-first jacket inlet pipe, 203-thermometer sleeve, 3-second jacket, 301-second jacket outlet pipe, 302-second jacket inlet pipe, 4-liquid supply system, 5-powder mixing device, 6-powder silo, 7-air supply system, 8-mixing motor, 9-mixing shaft, 10-mixing impeller, 11-baffle, 12-spray head, 13-mixing tank, 14-top cover. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific examples described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present utility model. Furthermore, in all embodiments, the same reference numerals denote the same elements.

[0016] like Figure 1 and Figure 2 The diagram shows a gypsum board production slurry mixing system, including a mixing vessel 1. A mixing motor 8 is fixedly connected to the center of the top of the mixing vessel 1. The output end of the mixing motor 8 is fixedly connected to a mixing shaft 9 via a coupling. The mixing shaft 9 extends downward into the cavity of the mixing vessel 1 and is rotatably connected to the mixing vessel 1. Several mixing impellers 10 are fixedly connected to the mixing shaft 9.

[0017] A feed pipe 103 is provided on one side of the top of the mixing vessel 1. The bottom of the feed pipe 103 is connected to the inside of the mixing vessel 1, and a top cover 14 is provided on the top of the feed pipe 103.

[0018] As a further illustration of this example, by opening the top cover 14 at the top of the feed pipe 103, the powder can be fed from the feed pipe 103 into the mixing vessel 1.

[0019] A liquid inlet pipe 102 is provided on the same side as the feed pipe 103 at the top of the mixing vessel 1. The liquid inlet pipe 102 extends to one end inside the cavity of the mixing vessel 1 and a spray head 12 is fixedly installed thereon. The spray head 12 is set at an angle.

[0020] A baffle 11 is fixedly connected to the top of the side wall of the mixing vessel 1. A mixing trough 13 is provided on the baffle 11. The mixing trough 13 is partially spherical in shape, and the end of the mixing trough 13 away from the side wall of the mixing vessel 1 is open. The top of the mixing trough 13 is directly opposite the feed pipe 103, and the spray head 12 is tilted towards the opening side of the mixing trough 13.

[0021] As a further illustration of this example, the powder falling from the feed pipe 103 first falls into the mixing tank 13, and then the spray head 12 sprays out liquid to flush the powder out of the mixing tank 13 and perform preliminary mixing.

[0022] An air inlet pipe 105 is provided on the side of the top of the mixing vessel 1 away from the feed pipe 103, and an air outlet pipe 104 is provided on one side of the air inlet pipe 105.

[0023] A first jacket 2 is fixedly installed on the lower outer wall of the mixing vessel 1, and a second jacket 3 is installed on the outside of the first jacket 2 through a fully enclosed structure.

[0024] The bottom of the first jacket 2 is provided with a first jacket outlet pipe 201, which extends downward through the second jacket 3. A thermometer sleeve 203 is provided on one side of the middle of the first jacket 2, with the open end of the thermometer sleeve 203 facing outward. The thermometer sleeve 203 passes obliquely through the second jacket 3 and acts on the inside of the first jacket 2. A thermometer can be installed inside the thermometer sleeve 203 to monitor the temperature of the liquid inside the first jacket 2. A first jacket inlet pipe 202 is provided on one side of the top of the first jacket 2, which extends laterally through the second jacket 3.

[0025] The second jacket 3 has a second jacket air outlet pipe 301 on one side of its top and a second jacket air inlet pipe 302 on the other side of its bottom. The mixing vessel 1 has a discharge pipe 101 at its bottom.

[0026] The air inlet pipe 105 of the mixing vessel 1 is connected to the air supply system 7, which supplies air to the interior of the mixing vessel 1. Its air outlet pipe 104 is connected to the second jacket air inlet pipe 302 of the second jacket 3 through a pipeline equipped with an air pump. The second jacket air outlet pipe 301 of the second jacket 3 is connected to the atmosphere.

[0027] The top of the feed pipe 103 of the mixing vessel 1 is connected to the powder mixing device 5, and the powder mixing device 5 is connected to the powder silo 6. The discharge pipe 101 of the mixing vessel 1 can be connected to a slurry pump to quickly discharge the mixed slurry in the mixing vessel 1.

[0028] The liquid inlet pipe 102 of the mixing vessel 1 is connected to the first jacket outlet pipe 201 of the first jacket 2 via a liquid inlet pump and pipeline, and the first jacket inlet pipe 202 of the first jacket 2 is connected to the liquid supply system 4.

[0029] Working principle and usage process of this utility model: The powder used to prepare the slurry is first transported from the powder silo 6 to the powder mixing device 5 for premixing. The premixed powder is then introduced into the mixing vessel 1 through the top feed pipe 103. It is first premixed with the liquid sprayed by the spray head 12 in the mixing tank 13. Then the mixture falls to the bottom of the mixing vessel 1 and is strongly stirred by the high-speed rotating mixing shaft 9 and the matching mixing impeller 10 to finally obtain a uniform gypsum board slurry.

[0030] Because an exothermic reaction occurs when the powder and liquid materials used in the preparation of gypsum board slurry are mixed, the internal temperature of the mixing vessel 1 will rise accordingly. In order to efficiently recover and utilize the waste heat of this reaction, on the one hand, air is introduced into the mixing vessel 1 through the air supply system 7. The air is heated up in the vessel as the exothermic reaction progresses. The heated air is then transported to the second jacket 3 of the mixing vessel 1 by the air pump to store the heat. On the other hand, the liquid material to be introduced into the mixing vessel 1 needs to be introduced into the first jacket 2 of the mixing vessel 1 through the liquid supply system 4. The liquid material can absorb the waste heat of the reaction inside the mixing vessel 1 and the heat transferred by the hot air in the second jacket 3 to achieve preheating. After being preheated to the set temperature, the liquid material is discharged from the first jacket 2 and then sprayed into the mixing vessel 1 through the spray nozzle 12 to react with the premixed powder.

[0031] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above-described embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A gypsum board production slurry mixing system, characterized in that, The system includes a mixing vessel (1), which has a stirring structure inside. The mixing vessel (1) has a feed pipe (103) and a liquid inlet pipe (102) on one side of the top. The liquid inlet pipe (102) is fixedly connected to a spray head (12) at one end inside the mixing vessel (1). The mixing vessel (1) has an air inlet pipe (105) and an air outlet pipe (104) on the other side of the top. The mixing vessel (1) has a discharge pipe (101) at the bottom. The mixing vessel (1) has a first jacket (2) on the outside. The first jacket (2) has a first jacket outlet pipe (201) and a first jacket inlet pipe (202). The first jacket (2) is fully covered by a second jacket (3). The second jacket (3) has a second jacket outlet pipe (301) and a second jacket inlet pipe (302). The feed pipe (103) is connected to the powder mixing device (5), the powder mixing device (5) is connected to the powder silo (6), the liquid inlet pipe (102) is connected to the first jacket outlet pipe (201) through a pipe equipped with a liquid inlet pump, the first jacket inlet pipe (202) is connected to the liquid supply system (4), the air inlet pipe (105) is connected to the air supply system (7), the air outlet pipe (104) is connected to the second jacket air inlet pipe (302) through a pipe equipped with a vacuum pump, and the second jacket air outlet pipe (301) is connected to the atmosphere.

2. The gypsum board production slurry mixing system according to claim 1, characterized in that, The stirring structure includes a mixing motor (8) fixedly connected to the center of the top of the mixing vessel (1). The output end of the mixing motor (8) is fixedly connected to a mixing shaft (9) via a coupling. The mixing shaft (9) is rotatably connected to the mixing vessel (1) and fixedly connected to several mixing impellers (10).

3. The gypsum board production slurry mixing system according to claim 1, characterized in that, A baffle (11) is fixedly connected to the inner side wall of the mixing vessel (1) below the feed pipe (103). A mixing tank (13) is opened on the baffle (11), and the spray head (12) is fitted to the mixing tank (13).

4. The gypsum board production slurry mixing system according to claim 3, characterized in that, The mixing tank (13) has an opening at one end, and the spray head (12) faces the opening side of the mixing tank (13).

5. The gypsum board production slurry mixing system according to claim 1, characterized in that, A thermometer sleeve (203) is provided on one side of the first jacket (2), and the open end of the thermometer sleeve (203) extends out of the second jacket (3).

6. The gypsum board production slurry mixing system according to claim 1, characterized in that, The feed pipe (103) is provided with a top cover (14).

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