Gypsum slurry defoaming device

Abstract

The utility model relates to the technical field of gypsum board production, in particular to a gypsum slurry defoaming device which comprises a conveying device, two connecting strips and a plurality of flattening rollers, the conveying device is used for conveying gypsum slurry; the multiple flattening rollers are arranged in the length direction of the connecting strips, and the two ends of each flattening roller are rotationally connected to the two connecting strips correspondingly. And the connecting strip is obliquely arranged on the conveying device, so that a gradually-changed flow channel of which the distance is gradually reduced in the conveying direction of the conveying device is formed between all the flattening rollers and the conveying device. According to the utility model, the problem that bubbles are easy to reform due to overlarge pressure change when slurry is extruded to eliminate the bubbles can be solved.

Description

Technical Field

[0001] This utility model relates to the field of gypsum board production technology, specifically to a gypsum slurry defoaming device. Background Technology

[0002] Currently, whether making plaster crafts or plasterboard, it is necessary to first mix plaster powder with water to form a slurry. Most of the slurry contains air bubbles, which can easily affect the hardness of plaster crafts or plasterboard, thus affecting the quality of the finished plaster product.

[0003] To address this, patent application number CN202411404667.8 discloses a gypsum board production line that defoams the slurry by squeezing out large air bubbles in the slurry on the lower facing paper using a flattening roller. Although some air bubbles can be eliminated during the extrusion process, the patent uses a straight flow channel formed by a single flattening roller and a conveying device to extrude the slurry. When the slurry enters this straight flow channel, the drastic pressure change may cause the air bubbles to reform, affecting the defoaming effect. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a defoaming device for gypsum slurry, so as to solve the problem that excessive pressure changes during the extrusion of slurry to eliminate bubbles can easily lead to the reformation of bubbles.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A gypsum slurry defoaming device includes a conveying device, two connecting strips, and multiple leveling rollers; the conveying device is used to convey gypsum slurry; the multiple leveling rollers are arranged along the length direction of the connecting strips, and the two ends of each leveling roller are rotatably connected to the two connecting strips respectively; the connecting strips are inclinedly arranged on the conveying device, so that a gradually decreasing flow channel is formed between all the leveling rollers and the conveying device along the conveying direction of the conveying device.

[0007] As a further embodiment of this utility model: the first end of the connecting strip is rotatably mounted on the conveying device, and the second end of the connecting strip is rotatably connected to a telescopic rod; the end of the telescopic rod away from the connecting strip is rotatably connected to the conveying device; the tilt angle of the connecting strip is controlled by adjusting the length of the telescopic rod.

[0008] As a further embodiment of this utility model, it also includes a limiting structure detachably connected to the first end of the connecting strip; the conveying device is provided with two brackets respectively corresponding to the connecting strip; the brackets are provided with vertically extending strip-shaped openings, and multiple limiting openings are arranged along the height direction in the strip-shaped openings; the limiting structure can be engaged in different limiting openings to adjust the height of the first end of the connecting strip without affecting the rotation of the first end of the connecting strip.

[0009] As a further embodiment of this utility model: the limiting structure is a T-shaped nut, and a screw rod that can move up and down along the strip opening is fixedly connected to the outer side of the first end of the connecting strip; the T-shaped nut is detachably threaded onto the screw rod, and when connected to the screw rod, it passes through the limiting opening.

[0010] As a further improvement of this utility model, the two connecting strips are arranged parallel to each other.

[0011] As a further embodiment of this invention, two adjacent leveling rollers are positioned close to each other.

[0012] By adopting the above technical solution, this utility model will have the following beneficial effects:

[0013] 1. By employing an inclined design for the connecting strip and multiple leveling rollers arranged along the length of the connecting strip, the gypsum slurry containing air bubbles passes through a gradually decreasing flow channel formed between the leveling rollers and the conveying device. Because the spacing of the flow channel gradually decreases along the conveying direction, the pressure exerted on the gypsum slurry by the multiple leveling rollers gradually increases, thus preventing sudden pressure changes that could cause air bubbles in the gypsum slurry to burst and avoid their reformation. Compared with existing technologies, the gradually decreasing flow channel of this invention helps air bubbles to smoothly exit the gypsum slurry, enhances the air bubble removal capacity, and prevents air bubble reformation caused by drastic pressure changes.

[0014] 2. By setting a telescopic rod to adjust the tilt angle of the connecting strip, the pressure variation of the sizing roller on the gypsum slurry can be adjusted; and by engaging the limiting structure in different limiting ports to adjust the height of the first end of the connecting strip, the maximum pressure of the sizing roller on the gypsum slurry can be adjusted, so that this utility model can adapt to different production needs, further improve the efficiency of air bubble removal, and improve the quality of gypsum slurry. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0016] Figure 1 This is a perspective view of the gypsum slurry defoaming device described in an embodiment of the present invention;

[0017] Figure 2 for Figure 1 Exploded view of the gypsum slurry defoaming device described in the embodiment with the conveying device concealed;

[0018] Figure 3 for Figure 1 A schematic diagram of the gypsum slurry defoaming device described in the embodiment under operating conditions.

[0019] The correspondence between the labels and component names in the attached figures is as follows:

[0020] 1. Conveying device; 2. Connecting bar; 3. Leveling roller; 4. Telescopic rod; 5. Limiting structure; 51. T-nut; 52. Screw; 6. Support; 61. Strip-shaped opening; 62. Limiting opening; 7. Gradient flow channel; 8. Mixer; 9. Forming table. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the following description is to be considered exemplary in nature and not restrictive.

[0022] Please refer to Figure 1-3In one embodiment of the gypsum slurry defoaming device of this utility model, the gypsum slurry defoaming device includes a conveying device 1, two connecting strips 2, and multiple leveling rollers 3; the conveying device 1 can be a conventional conveyor belt, with a mixer 8 connected upstream to receive gypsum slurry containing air bubbles, and a forming table 9 connected downstream to output gypsum slurry after air bubble treatment; the mixer 8 and the forming table 9 can be commercially available products or designs identical to those described in the prior art patent; the multiple leveling rollers 3 are arranged along the length of the connecting strips 2, and the two ends of each leveling roller 3 are rotatably connected to the two connecting strips 2 respectively. On strip 2; the connecting strip 2 is inclinedly set on the conveying device 1, so that all the leveling rollers 3 and the conveying device 1 form a gradually decreasing flow channel 7 with the spacing gradually decreasing along the conveying direction of the conveying device 1. In this way, when the conveying device 1 conveys the gypsum slurry containing air bubbles through the gradually decreasing flow channel 7, the pressure of the gypsum slurry on the leveling rollers 3 gradually increases, rather than suddenly changes. Because sudden pressure changes will cause the air bubbles to burst, and the burst air bubbles may re-form under new pressure conditions, especially in areas with large pressure fluctuations. Therefore, the design of the gradually decreasing flow channel 7 can help the air bubbles to be discharged smoothly from the gypsum slurry and enhance the air bubble discharge capacity.

[0023] In a preferred embodiment, the first end of the connecting strip 2 is rotatably mounted on the conveying device 1, and the second end of the connecting strip 2 is rotatably connected to a telescopic rod 4; the end of the telescopic rod 4 away from the connecting strip 2 is rotatably connected to the conveying device 1; by adjusting the length of the telescopic rod 4, the tilt angle of the connecting strip 2 is controlled, thereby adjusting the pressure variation of the leveling roller 3 on the gypsum slurry. In specific applications, the bubble discharge effect under different pressure variation ranges is tested experimentally, and the change in bubble content in the slurry is observed to determine the appropriate tilt angle of the connecting strip 2, so as to further improve the efficiency of bubble discharge and improve the quality of the gypsum slurry. It should be noted that the above-mentioned telescopic rod 4 is prior art and can be replaced by a commercially available electric push rod or telescopic cylinder, as long as its length can be freely adjusted.

[0024] Based on this, a limiting structure 5 detachably connected to the first end of the connecting strip 2 is also included; brackets 6 corresponding to the connecting strip 2 are respectively provided on both sides of the conveying device 1; the brackets 6 are inverted T-shaped, with their horizontal sides fixedly connected to the conveying device 1, and vertically extending strip-shaped openings 61 on their vertical sides, with multiple arc-shaped limiting openings 62 arranged along the height direction inside the strip-shaped openings 61; in use, the limiting structure 5 can be engaged in different limiting openings 62 to adjust the height of the first end of the connecting strip 2 without affecting the rotation of the first end of the connecting strip 2, thus adjusting the maximum pressure of the leveling roller 3 on the gypsum slurry, preventing insufficient pressure from causing air bubbles to be difficult to expel, or excessive pressure from causing air bubbles to burst. A suitable pressure range is determined through experiments, within which air bubbles can be effectively compressed and expelled, while avoiding excessive compression and bursting of air bubbles.

[0025] Furthermore, the limiting structure 5 can be set as a T-nut 51, and a screw 52 that can move up and down along the strip-shaped opening 61 is fixedly connected to the outer side of the first end of the connecting strip 2; the T-nut 51 is detachably threaded onto the screw 52, ​​and when connected to the screw 52, ​​it passes through the limiting opening 62; in this way, when the T-nut 51 is removed, the first end of the connecting strip 2 can be moved up and down so that the screw 52 passes through different limiting openings 62 to adjust the height of the first end of the connecting strip 2. After adjustment, the T-nut 51 is installed to restrict the up and down movement of the screw 52, ​​and since the T-nut 51 can rotate freely within the limiting opening 62, it will not affect the rotation of the first end of the connecting strip 2.

[0026] As a preferred embodiment, the two connecting strips 2 are arranged parallel to each other, so that the distribution of all the leveling rollers 3 is more uniform, thereby making the pressure change of the leveling rollers 3 on the gypsum slurry more gradual and improving the efficiency of air bubble removal.

[0027] As a preferred embodiment, two adjacent leveling rollers 3 are brought close to each other, which can squeeze the gypsum slurry adhering to each other, thus achieving a mutual cleaning effect.

[0028] The method of use or working principle of this utility model is as follows:

[0029] When the gypsum slurry containing air bubbles output from the mixer 8 is conveyed to the gradient flow channel 7 by the conveying device 1, the advancing gypsum slurry drives the leveling rollers 3 to roll. The rolling leveling rollers 3 squeeze the gypsum slurry, and with the inclined design of the connecting strip 2, the pressure of the multiple leveling rollers 3 on the gypsum slurry gradually increases, thereby preventing sudden pressure changes from causing the air bubbles in the gypsum slurry to burst. After the air bubbles in the gypsum slurry are squeezed out by the leveling rollers 3, it is fed into the forming table 9 for forming through the conveying device 1.

[0030] When changing products or production lines, first remove the T-nut 51, move the first end of the connecting strip 2 up and down so that the screw 52 passes through different limiting ports 62 to adjust the height of the first end of the connecting strip 2, and then install the T-nut 51. The limiting ports 62 restrict the up and down movement of the first end of the connecting strip 2 without affecting its rotation. This allows adjustment of the maximum pressure of the leveling roller 3 on the gypsum slurry, preventing insufficient pressure from causing air bubbles to be difficult to expel, or excessive pressure from causing air bubbles to burst. Finally, by adjusting the length of the telescopic rod 4, the tilt angle of the connecting strip 2 is controlled, thereby adjusting the pressure variation of the leveling roller 3 on the gypsum slurry, further improving the efficiency of air bubble expulsion and enhancing the quality of the gypsum slurry.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A defoaming device for gypsum slurry, characterized in that, It includes a conveying device (1), two connecting strips (2) and multiple leveling rollers (3); the conveying device (1) is used to convey gypsum slurry; the multiple leveling rollers (3) are arranged along the length direction of the connecting strips (2), and the two ends of each leveling roller (3) are respectively rotatably connected to the two connecting strips (2); the connecting strips (2) are inclinedly arranged on the conveying device (1), so that a gradually decreasing flow channel (7) is formed between all the leveling rollers (3) and the conveying device (1) along the conveying direction of the conveying device (1).

2. The gypsum slurry defoaming device according to claim 1, characterized in that, The first end of the connecting bar (2) is rotatably mounted on the conveying device (1), and the second end of the connecting bar (2) is rotatably connected to a telescopic rod (4); the end of the telescopic rod (4) away from the connecting bar (2) is rotatably connected to the conveying device (1); the tilt angle of the connecting bar (2) is controlled by adjusting the length of the telescopic rod (4).

3. The gypsum slurry defoaming device according to claim 2, characterized in that, It also includes a limiting structure (5) detachably connected to the first end of the connecting strip (2); the conveying device (1) is provided with two brackets (6) respectively corresponding to the connecting strip (2); the bracket (6) is provided with a strip-shaped opening (61) extending vertically, and multiple limiting openings (62) are arranged in the strip-shaped opening (61) along the height direction; the limiting structure (5) can be engaged in different limiting openings (62) to adjust the height of the first end of the connecting strip (2) without affecting the rotation of the first end of the connecting strip (2).

4. The gypsum slurry defoaming device according to claim 3, characterized in that, The limiting structure (5) is a T-shaped nut (51). The outer side of the first end of the connecting strip (2) is fixedly connected to a screw (52) that can move up and down along the strip opening (61). The T-shaped nut (51) is detachably threaded onto the screw (52) and passes through the limiting opening (62) when connected to the screw (52).

5. The gypsum slurry defoaming device according to claim 1, characterized in that, The two connecting strips (2) are arranged parallel to each other.

6. The gypsum slurry defoaming device according to claim 1, characterized in that, The two adjacent leveling rollers (3) are close to each other.

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