A glue dispensing device

Abstract

The application discloses a glue mixing device, which comprises a pipe body and mixing pieces. The pipe body is open at both ends to accommodate fluid to pass through. The mixing pieces are arranged inside the pipe body to make the fluid form a spiral flow. The mixing pieces have a semicircular sheet structure. The peripheral surface of the mixing pieces abuts against the inner wall of the pipe body. The straight surface of the mixing pieces coincides with the central axial surface of the pipe body. The central axial line of the mixing pieces is inclined to the central axial line of the pipe body. Two mixing pieces are arranged in mirror symmetry about the central axial surface of the pipe body and have opposite inclined directions. The mixing pieces are equidistantly arranged along the axial direction of the pipe body. The glue solution and water entering the pipe body generate a spiral flow and turbulent flow between each other when flowing downward by gravity. The mixing uniformity between the glue solution and water is improved by increasing the contact area between the glue solution and water and prolonging the contact time. The whole mixing process is completed by the liquid pressure and gravity, and no additional power input is needed.

Description

Technical Field

[0001] This invention relates to the field of paper-faced gypsum board manufacturing equipment technology, specifically to an adhesive mixing device. Background Technology

[0002] A glue dispensing device is a device used for automated glue delivery. It is widely used in the manufacturing process of paper-faced gypsum board. It can accurately deliver glue to the required position according to the process requirements of bonding the upper and lower facing paper on the paper-faced gypsum board, thereby improving production efficiency, reducing manual intervention, and improving product quality.

[0003] Adhesive mixing equipment typically consists of adhesive storage tanks, delivery pipelines, valves, color masterbatch pumps, agitators, metering equipment, mixing valves, and mixing pipes. These components can be automated through computer or PLC control systems to achieve optimal adhesive mixing results. However, the static mixing method used in the mixing pipes of existing adhesive mixing equipment still suffers from problems with mixing efficiency and poor mixing effect.

[0004] Therefore, there is a need to provide a glue mixing device to solve the problems of low mixing efficiency and poor glue quality in the glue dispensing process when the existing glue mixing device is used in the paper-faced gypsum board molding process, where the glue is mixed and used immediately. Summary of the Invention

[0005] The purpose of this invention is to provide a glue mixing device to solve the problems of low mixing efficiency and poor glue quality in the glue dispensing process of existing glue mixing devices in the paper-faced gypsum board molding process, where the glue is mixed and used immediately.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: This invention provides a glue mixing device, comprising: a tube body with openings at both ends for accommodating fluid flow; a mixing plate disposed inside the tube body for creating a swirling flow of the fluid; a container A connected to a raw material glue container for temporary storage of collagen solution, with a glue outlet pipe at the bottom of container A, one end of which is connected to a metering pump A; a container B connected to a raw material water container for temporary storage of water, with a water outlet pipe at the bottom of container B, one end of which is connected to a metering pump B; and a vacuum pump connected to containers A and B respectively via vacuum pipes, the vacuum pump being used to draw air from containers A and B to create negative pressure and draw liquid from the raw material glue container and raw material water container; wherein metering pump A and metering pump B are respectively connected to a first liquid inlet and a second liquid inlet on the tube body; the mixing plate has a semi-circular plate structure, the circumferential surface of the mixing plate abutting against the inner wall of the tube body, the straight surface of the mixing plate coinciding with the central axis of the tube body, and the central axis of the mixing plate being inclined to the central axis of the tube body.

[0007] Furthermore, a first liquid inlet and a second liquid inlet are provided on the side wall of the tube body; wherein, the first liquid inlet and the second liquid inlet are located on opposite sides of the central axis of the tube body, and when the first liquid inlet and the second liquid inlet introduce liquid into the tube body, the liquid flow formed can respectively impact the mixing plate close to it to make the liquid flow form a swirling flow.

[0008] Furthermore, at least two posts are provided equidistantly on the inner side wall of the tube to limit the mixing plate.

[0009] Furthermore, the outer edge of the mixing plate is provided with a slot equal to the diameter of the column rod, which is engaged with the column rod to fix the mixing plate; wherein, the slot can at least surround 1 / 2 of the column rod surface.

[0010] Furthermore, the outer edge of the mixing plate is provided with a sliding sleeve, the inner diameter of which is equal to the diameter of the column rod, and the sliding sleeve is slidably connected to the column rod.

[0011] Furthermore, the column has detachable plug-in sleeves at both ends, and the plug-in sleeves have limiting flanges at their radial mid-sections; wherein the plug-in sleeves are screwed to the ends of the column.

[0012] Furthermore, the column is provided with a limiting protrusion for restricting the axial movement of the sliding sleeve; wherein, a gap is left between the limiting protrusion and the insertion cylinder.

[0013] Furthermore, a float is coaxially arranged inside the tube, the float passes through the mixing plate and is fixedly connected to the mixing plate; wherein, floats are equidistantly arranged on the float, and the floats are spaced apart from the mixing plate.

[0014] Furthermore, the float is slidably connected to the float rod; wherein, a bushing is fitted on the float rod, and the float is slidably connected to the float rod through the bushing.

[0015] Furthermore, the two mixing plates are arranged in a mirror-symmetrical manner about the central axis of the tube and tilt in opposite directions, and multiple mixing plates are equidistantly arranged along the axial direction of the tube.

[0016] Compared with the prior art, the present invention has the following advantages: This invention utilizes interlaced mixing plates inside the tube to create swirling and turbulent flow between the adhesive and water as they flow downwards under gravity. By increasing the contact area and contact time between the adhesive and water, the uniformity of mixing is improved. The entire mixing process is completed by liquid pressure and gravity, requiring no additional power input. This not only improves mixing efficiency, enabling the adhesive to be used immediately after mixing, but also reduces the complexity of the mixing and dispensing equipment while saving energy. Attached Figure Description

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] Figure 1 A simplified structural diagram of a glue dispensing device provided by the present invention; Figure 2 for Figure 1 Perspective view of the central tube; Figure 3 for Figure 2 Enlarged view of section I; Figure 4 This is a schematic diagram of the structure of the hybrid sheet in another embodiment of the present invention; Figure 5 for Figure 4 Enlarged view of section II; Figure 6 This is a schematic diagram of the structure of the hybrid sheet in another embodiment of the present invention; Figure 7 for Figure 6 Enlarged view of section III; Figure 8 for Figure 7 A fracture view of the middle float; Figure 9 for Figure 8 A fracture view of the intermediate float block when it comes into contact with the mixing plate; Figure 10 This is a cross-sectional view of the plug-in sleeve.

[0019] The labels in the diagram represent the following: 1. Pipe body; 11. First liquid inlet; 12. Second liquid inlet; 13. Column rod; 11a. Insert sleeve; 11b. Limiting flange; 11c. Limiting ring; 14. Float rod; 14a. Float body; 14b. Bushing; 2. Mixing plate; 21. Bayonet; 22. Sliding sleeve; 3. A bucket; 31. Raw material glue bucket; 32. Glue outlet pipe; 33. A metering pump; 4. B bucket; 41. Raw material water bucket; 42. Water outlet pipe; 43. B metering pump; 5. Vacuum pump. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1-2 As shown, the present invention provides a glue dispensing device, comprising: Pipe 1, with openings at both ends to allow fluid to pass through; Mixing plate 2, which is located inside tube 1, is used to create a swirling flow of fluid; A barrel 3 is connected to the raw material glue barrel 31 for temporary storage of collagen solution. A glue outlet pipe 32 is provided at the bottom of A barrel 3, and one end of the glue outlet pipe 32 is connected to A metering pump 33. B bucket 4 is connected to raw material water bucket 41 for temporary water storage. A water outlet pipe 42 is provided at the bottom of B bucket 4, and one end of the water outlet pipe 42 is connected to B metering pump 43. Vacuum pump 5 is connected to barrel A 3 and barrel B 4 respectively through vacuum tube 31. Vacuum pump 5 is used to draw air from barrel A 3 and barrel B 4 to form negative pressure and draw liquid from raw material glue barrel 31 and raw material water barrel 41. Among them, metering pump A 33 and metering pump B 43 are respectively connected to the first liquid inlet 11 and the second liquid inlet 12 on the pipe body 1; the mixing plate 2 has a semi-circular plate structure, the circumferential surface of the mixing plate 2 abuts against the inner wall of the pipe body 1, the straight surface of the mixing plate 2 coincides with the central axis surface of the pipe body 1, and the central axis of the mixing plate 2 is inclined to the central axis of the pipe body 1; the two mixing plates 2 are mirror symmetrically arranged about the central axis surface of the pipe body 1 and the inclination directions are opposite, and multiple mixing plates 2 are equidistantly arranged along the axial direction of the pipe body 1.

[0022] The present invention aims to improve the mixing uniformity of adhesive and water by using mixing plates 2 arranged alternately inside the tube body 1, which generate swirling and turbulent flow between the adhesive and water as they flow downwards under gravity. This increases the contact area and contact time between the adhesive and water. The entire mixing process is completed by liquid pressure and gravity, without the need for additional power input. This not only improves the mixing efficiency and enables the adhesive preparation process of paper-faced gypsum board to achieve the purpose of mixing and use immediately, but also reduces the complexity of the adhesive mixing and preparation equipment while saving energy.

[0023] The operation of the adhesive mixing device in this embodiment will be described below. When adhesive mixing is required, the vacuum pump 5 is first used to evacuate the inside of tanks A 4 and B 5, so that part of the adhesive liquid in the raw material adhesive tank 31 is temporarily stored in the raw material adhesive tank 31, and part of the water in the raw material water tank 41 is temporarily stored in the raw material water tank 41. Then, according to the actual amount of adhesive used, the flow rate of the metering pump is adjusted so that the adhesive liquid and water flow into the pipe body 1 in a metered manner through the metering pump, and are mixed evenly while being input into the adhesive delivery system. Finally, it is used for the overlapping of the upper and lower facing paper in the paper-faced gypsum board molding process.

[0024] The following describes the operation of the mixing plate 2 inside the tube 1 in this embodiment. Figure 2This is a perspective view of tube 1, showing the arrangement of the mixing plate 2 inside tube 1. Figure 3 for Figure 2 A magnified view of a portion of the image. On the one hand, to avoid direct friction between the circumferential surface of the mixing plate 2 and the inner wall of the tube 1, a sealing rubber ring can be wrapped around the circumferential surface of the mixing plate 2. The flexible sealing rubber ring can undergo elastic deformation due to the extrusion pressure between the mixing plate 2 and the inner wall of the tube 1, allowing the sealing rubber ring to simultaneously adhere to the circumferential surface of the mixing plate 2 and the inner wall of the tube 1. This improves the sealing effect between the mixing plate 2 and the tube 1, thereby preventing liquid from flowing out through the gap between the mixing plate 2 and the inner wall of the tube 1 and thus preventing it from flowing through the wall of the mixing plate 2 to generate swirling or turbulent flow, reducing the degree of mixing uniformity. On the other hand, in order to avoid friction and wear between the mixing plates 2 and improve their service life, the opposing straight surfaces of two mixing plates 2 at the same height along the axis of the tube body 1 and which are mirror symmetrical can be set in parallel instead of overlapping. Then, the two mixing plates 2 can be connected by a rotating shaft between the opposing straight surfaces of the two mixing plates 2, so that the mixing plates 2 can be installed in pairs in the tube body 1. Only the cross angle between the two mixing plates 2 needs to be adjusted, which further improves the installation efficiency of the mixing plates 2 in the tube body 1.

[0025] In order to further improve the uniformity of mixing of adhesive and water, based on the above embodiments, in another preferred embodiment of the present invention, a first liquid inlet 11 and a second liquid inlet 12 are provided on the side wall of the tube body 1. The first liquid inlet 11 and the second liquid inlet 12 are located on opposite sides of the central axis of the tube body 1. When the first liquid inlet 11 and the second liquid inlet 12 inject liquid into the tube body 1, the liquid flow formed can impact the mixing plate 2 that is close to it to make the liquid flow form a swirling flow.

[0026] In this embodiment, the two raw materials, adhesive and water, enter the tube 1 through the first inlet 11 and the second inlet 12 respectively, and directly impact the mixing plate 2, thereby accelerating the formation of swirling and turbulent flow and improving the adhesive mixing efficiency.

[0027] In the above embodiments, the mixing plate 2 is limited by its contact with the inner wall of the tube body 1. Under the pressure of the fluid, it is easy to rotate circumferentially with the swirling and turbulent flow of the fluid. At the same time, it is not conducive to the installation of the mixing plate 2 inside the tube body 1.

[0028] To solve the above problems, such as Figure 4-5 As shown, in another embodiment of the present invention, at least two rods 13 are provided circumferentially at equal intervals on the inner sidewall of the tube 1 for limiting the mixing plate 2.

[0029] More specifically, the outer edge of the mixing plate 2 is provided with a slot 21 with the same diameter as the column rod 13, and the slot 21 is engaged with the column rod 13 to fix the mixing plate 2; Among them, the bayonet 21 can surround at least 1 / 2 of the cylindrical surface of the column 13.

[0030] In this embodiment, the mixing plate 2 can be fixed inside the tube body 1 by the engagement of the bayonet 21 with the column rod 13, preventing it from rotating and providing a limit for the installation of the mixing plate 2.

[0031] The following describes the installation method of the hybrid plate 2 in this embodiment. Figure 4 This is a schematic diagram showing the fit between the mixing plate 2 and the rod 13. Figure 5 for Figure 4 A partial enlarged view. When installing the mixing plate 2, the slots 21 on the mixing plate 2 can be inserted sequentially from one end of the column rod 13, so that they are evenly spaced on the column rod 13. At the same time, in order to reduce the wear between the slots 21 and the column rod 13 and to avoid axial sliding between them, a rubber inner ring of approximately the same size can be embedded inside the slot 21. By having the rubber inner ring replace the slot 21 in contact with the circumference of the column rod 13, not only is wear on the edge of the slot 21 avoided, but it can also play a role in preventing slippage.

[0032] In the above embodiments, in order to stabilize the mixing plate 2, the latch 21 needs to be locked to the column rod 13. This makes it difficult to adjust the distance between two adjacent mixing plates 2 in the axial direction. The distance between the mixing plates 2 cannot be adjusted according to the fluid flow velocity, thereby affecting the flow mixing effect of the swirling and turbulent flow formed inside the pipe body 1.

[0033] To solve the above problems, such as Figure 6-7 As shown in Figures 1 and 10, in another embodiment provided by the present invention, the outer edge of the mixing plate 2 is provided with a sliding sleeve 22, the inner diameter of the sliding sleeve 22 is equal to the diameter of the column rod 13, and the sliding sleeve 22 is slidably connected to the column rod 13.

[0034] More specifically, the two ends of the column rod 13 are provided with detachable plug-in tubes 11a, and the plug-in tubes 11a are provided with limiting flanges 11b at the mid-section along the radial direction; The plug-in sleeve 11a is screwed to the end of the column rod 13.

[0035] More specifically, the column rod 13 is provided with a limiting protrusion 11c for restricting the axial movement of the sliding sleeve 22; There is a gap between the limiting protrusion ring 13 and the insertion cylinder 11a.

[0036] In this embodiment, the sliding sleeve 22 facilitates the adjustment of the spacing between the mixing plates 2, allowing the axial spacing between adjacent mixing plates 2 to be adjusted according to the actual flow velocity of the fluid. This enables the control of the flow time and mixing effect of the fluid within the pipe body 1. For example, when the spacing between the mixing plates 2 increases, the length of the pipe body 1 remains constant, the mixing plates 2 become more sparse, the fluid flows more directly downwards, the flow time is shortened, and the mixing effect caused by swirling and turbulent flow is reduced. When the spacing between the mixing plates 2 decreases, the length of the pipe body 1 remains constant, the mixing plates 2 become more densely packed, the flow flows more swirling and turbulent downwards, the flow time is prolonged, and the mixing effect caused by swirling and turbulent flow is increased.

[0037] In the above embodiments, the first liquid inlet 11 and the second liquid inlet 12 will always wash the same position of the adjacent mixing plate 2 when the flow is in, which is not conducive to increasing the service life of the mixing plate 2.

[0038] To solve the above problems, such as Figure 7-9 As shown, in another embodiment of the present invention, a float 14 is coaxially provided inside the tube 1, and the float 14 passes through the mixing plate 2 and is fixedly connected to the mixing plate 2; Among them, floats 14a are provided at equal intervals on the float 14, and the floats 14a are spaced apart from the mixing plate 2.

[0039] More specifically, the float 14a is slidably connected to the float 14; The float 14 is fitted with a bushing 14b, and the float 14a is slidably connected to the float 14 through the bushing 14b.

[0040] In this embodiment, by setting up the float 14 and the float 14a, the mixing plate 2 can adjust its own height according to the buoyancy of the fluid in the tube 1, so as to avoid the same position of the mixing plate 2 being frequently washed by the liquid flow and extend the service life of the mixing plate 2.

[0041] The operation of the float 14 and the float 14a in this embodiment will be described below. Figure 7 This shows the initial positional relationship of the float 14a, which is not subject to buoyancy and is far away from the mixing plate 2. Figure 9The diagram illustrates the positional relationship of the float 14a, which is pressed against the mixing plate 2 under buoyancy during operation. As fluid is poured into the tube 1, the float 14a gradually rises under buoyancy until it contacts the lower surface of the mixing plate 2. Since the mixing plate 2 is slidably connected to the column 13, when the buoyancy on the float 14a increases further, the float 14a will push the mixing plate 1 upward, thereby changing the relative positions of the first inlet 11, the second inlet 12, and the mixing plate 2. This causes the incoming fluid flow to impact different areas of the mixing plate 2, reducing the wear and tear on the mixing plate 2 caused by the fluid flow impact. It should be noted that, in order to increase the contact area between the float 14a and the mixing plate 2, the sidewall of the float 14a can be set as an inclined surface with the same inclination direction as the mixing plate 2.

[0042] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A glue dispensing device, characterized in that, include: The tube (1) has openings at both ends to allow fluid to pass through; A mixing plate (2) is disposed inside the tube (1) to cause the fluid to form a swirling flow; A barrel (3) is connected to the raw material glue barrel (31) for temporary storage of collagen solution. A glue outlet pipe (32) is provided below the A barrel (3), and one end of the glue outlet pipe (32) is connected to the A metering pump (33). B bucket (4), which is connected to the raw material water bucket (41) for temporary water storage, and a water outlet pipe (42) is provided below the B bucket (4), one end of which is connected to the B metering pump (43). A vacuum pump (5) is connected to the A barrel (3) and the B barrel (4) respectively through a vacuum tube. The vacuum pump (5) is used to draw air from the A barrel (3) and the B barrel (4) to form a negative pressure and draw liquid from the raw material glue barrel (31) and the raw material water barrel (41). The A metering pump (33) and the B metering pump (43) are respectively connected to the pipe body (1). The mixing plate (2) has a semi-circular plate structure. The circumferential surface of the mixing plate (2) abuts against the inner wall of the tube (1). The straight surface of the mixing plate (2) coincides with the central axis of the tube (1). The central axis of the mixing plate (2) is inclined to the central axis of the tube (1). The tube body (1) has a first liquid inlet (11) and a second liquid inlet (12) on its side wall. The first liquid inlet (11) and the second liquid inlet (12) are located on opposite sides of the central axis of the tube body (1). When the first liquid inlet (11) and the second liquid inlet (12) inject liquid into the tube body (1), the liquid flow formed by them can respectively impact the mixing plate (2) that is close to them so that the liquid flow forms a swirling flow. The inner wall of the tube (1) is provided with at least two columns (13) equidistantly spaced around the perimeter for limiting the position of the mixing plate (2); The outer edge of the mixing plate (2) is provided with a slot (21) with the same diameter as the column rod (13). The slot (21) is engaged with the column rod (13) to fix the mixing plate (2). Wherein, the bayonet (21) can at least surround 1 / 2 of the cylindrical surface of the column (13); The outer edge of the mixing plate (2) is provided with a sliding sleeve (22), the inner diameter of the sliding sleeve (22) is equal to the diameter of the column rod (13), and the sliding sleeve (22) is slidably connected to the column rod (13).

2. The adhesive dispensing device according to claim 1, characterized in that, The column (13) has detachable plug-in tubes (11a) at both ends, and the plug-in tubes (11a) have limiting flanges (11b) at the mid-section along the radial direction. The plug-in sleeve (11a) is screwed to the end of the column rod (13).

3. The adhesive dispensing device according to claim 2, characterized in that, The column (13) is provided with a limiting protrusion (11c) for restricting the axial movement of the sliding sleeve (22); There is a gap between the limiting protrusion ring (11c) and the insertion cylinder (11a).

4. The adhesive dispensing device according to claim 3, characterized in that, The tube (1) is coaxially provided with a float (14), which passes through the mixing plate (2) and is fixedly connected to the mixing plate (2); The float (14) is provided with floats (14a) at equal intervals, and the floats (14a) are spaced apart from the mixing plate (2).

5. The adhesive dispensing device according to claim 4, characterized in that, The float (14a) is slidably connected to the float (14); The float (14) is fitted with a bushing (14b), and the float (14a) is slidably connected to the float (14) through the bushing (14b).

6. The adhesive dispensing device according to claim 5, characterized in that, include: The two mixing plates (2) are mirror-symmetrically arranged about the central axis of the tube (1) and tilted in opposite directions. The mixing plates (2) are provided at equal intervals along the axial direction of the tube (1).

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