Dissolving tank

Abstract

The utility model belongs to the technical field of machinery, and relates to a dissolving tank which comprises a barrel, a cover plate is arranged at the top of the barrel, a round hole is formed in the middle of the barrel, and a stirring shaft penetrates through the round hole; the diameter of the circular mesh filter plate is the same as that of the cylinder body, and the circular mesh filter plate is arranged below the cover plate and fixedly arranged on the inner wall of the cylinder body; the impeller is fixed at the tail end of the stirring shaft through a bolt and is formed by three stirring blades which are distributed at an angle of 120 degrees along the circumferential direction; the steam coil pipe is arranged at the bottom of a cylinder at the upper part of the barrel body and is fixedly arranged on a fixed support in the barrel body; the weighing sensor is arranged on the outer wall of the lower circular truncated cone of the cylinder body; and the diameter of the discharge pipe is the same as that of the bottom of the cylinder lower circular truncated cone. According to the utility model, the weighing sensor is arranged to realize accurate proportion preparation, and the mesh filter plate screens out agglomerates; the impeller structure enables the dissolved liquid to roll up and down in the tank; the steam heating coil can heat liquid in the dissolving tank, and wall hanging and pipeline blocking are not prone to occurring.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a dissolving tank. Background Technology

[0002] In the production of engineered wood products, paraffin wax is used as a waterproofing agent to improve the water resistance of the boards, enhance dimensional stability, and reduce or eliminate warping caused by moisture expansion and shrinkage. Common types of paraffin wax added in engineered wood production include molten paraffin, emulsified paraffin, and suspension paraffin. Suspension paraffin uses calcium lignosulfonate as a dispersant to uniformly disperse the paraffin wax in water, forming very small suspension droplets. These droplets are easier to distribute, diffuse, and adhere to the fiber or shaving surface, thus improving the waterproofing effect. Calcium lignosulfonate is a multi-component polymeric anionic surfactant. It appears as a light yellow to dark brown powder with a slightly aromatic odor. Its molecular weight is generally between 800 and 10,000, and it possesses strong dispersing, binding, and chelating properties. It is usually a dark brown powder that easily absorbs water and clumps together, requiring dilution with water before use.

[0003] When conventional dissolving tanks are used to prepare calcium lignosulfonate, they tend to form lumpy or granular viscous substances. The outermost layer of calcium lignosulfonate powder quickly absorbs water and forms a coating, while the inner powder remains dry and cannot be completely dissolved. This incomplete dissolution not only wastes resources but also easily leads to accumulation and blockage of pipes and pumps, affecting normal production operations. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a dissolving tank, which can solve the problem of incomplete dissolution when preparing calcium lignosulfonate, improve resource utilization, reduce costs, and reduce equipment failures.

[0005] Technical solution

[0006] A dissolving tank includes a cylindrical body composed of two parts: an upper cylindrical body and a lower inverted frustum. The diameter of the cylinder is the same as the diameter of the top of the frustum. A cover plate is provided on the top of the cylindrical body, with a circular hole in the center through which a stirring shaft passes. A circular mesh filter plate with the same diameter as the cylindrical body is located below the cover plate and fixed to the inner wall of the cylindrical body. An impeller is bolted to the end of the stirring shaft and consists of three stirring blades arranged at 120° intervals around the circumference. A steam coil is located at the bottom of the upper cylindrical body and fixed to a support inside the cylindrical body. A steam inlet pipe is located above the steam coil, and a steam outlet pipe is located below it. A weighing sensor is located on the outer wall of the lower frustum of the cylindrical body to weigh the material in the dissolving tank. A discharge pipe is installed at the bottom of the cylindrical body, with a diameter the same as the bottom diameter of the lower frustum.

[0007] In a preferred embodiment of this utility model, the height of the frustum is 1 / 10 to 1 / 8 of the height of the cylinder.

[0008] In a preferred embodiment of this utility model, the stirring shaft passes through the mesh filter plate, the cover plate, and the frame sequentially from bottom to top, and is connected to the motor gearbox by a coupling.

[0009] Furthermore, the frame is a hollow frustum with two through-holes in the middle, and the lower end is fixed to the cover plate.

[0010] Furthermore, the motor gearbox is fixed above the frame by a flange, and the motor gearbox is connected to a motor to drive the stirring shaft.

[0011] In a preferred embodiment of this utility model, the cover plate is connected to two symmetrical menisci by hinges.

[0012] In a preferred embodiment of this utility model, the stirring blades are at a 30° angle to the horizontal direction, allowing the dissolved liquid to tumble up and down, resulting in a uniform preparation.

[0013] In a preferred embodiment of this utility model, the steam coil has a total of 5 to 7 turns.

[0014] Furthermore, the fixed support corresponds to the steam coil, and there are a total of 5 to 7 layers.

[0015] In a preferred embodiment of this utility model, a fixed bracket is also included, which is fixed to the outer wall of the upper cylindrical body of the cylinder and horizontally installed on the ground.

[0016] Beneficial effects

[0017] This invention achieves precise proportioning through the use of a weighing sensor. A mesh filter plate removes lumps from the calcium lignosulfonate powder, ensuring the calcium lignosulfonate falls evenly into the dissolving tank in powder form, minimizing the formation of granular or viscous incompletely dissolved substances. The unique impeller structure allows the dissolved liquid to tumble within the tank, resulting in more uniform dissolution. A steam heating coil heats the liquid in the dissolving tank, increasing the dissolution rate and reactivity, reducing viscosity for easier discharge, and preventing adhesion to the tank walls and pipe blockage. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of this utility model;

[0019] Figure 2 Enlarged view at point A;

[0020] Figure 3 Enlarged view at point B;

[0021] Figure 4Top view of the mesh filter plate;

[0022] Figure 5 A bottom view of the impeller;

[0023] Figure 6 Schematic diagram of the steam coil structure;

[0024] Figure 7 Top view of the cover plate and meniscus;

[0025] The reference numerals in the attached drawings are as follows: 1. Motor gearbox, 2. Flange, 3. Coupling, 4. Frame, 5. Cover plate, 6. Hinge, 7. Meniscus, 8. Mesh filter plate, 9. Cylinder, 10. Stirring shaft, 11. Impeller, 12. Bolt, 13. Steam coil, 14. Fixed support, 15. Steam inlet pipe, 16. Steam outlet pipe, 17. Discharge pipe, 18. Fixed bracket, 19. Weighing sensor. Detailed Implementation

[0026] The present invention will be described in detail below with reference to the embodiments, so that those skilled in the art can better understand the present invention, but the present invention is not limited to the following embodiments.

[0027] Example 1

[0028] A dissolving tank includes a cylindrical body 9, which is composed of two parts: an upper cylindrical body and a lower inverted frustum. The diameter of the cylinder is the same as the diameter of the top of the frustum. A cover plate 5 is provided at the top of the cylindrical body 9, with a circular hole in the center through which a stirring shaft 10 passes. A circular mesh filter plate 8, with the same diameter as the cylindrical body 9, is located below the cover plate 5 and fixed to the inner wall of the cylindrical body 9. An impeller 11 is fixed to the end of the stirring shaft 10 by bolts 12, and is driven by three stirring blades along... The components are arranged in a circumferential direction at 120° intervals; the steam coil 13 is located at the bottom of the upper cylinder of the cylinder 9 and is fixed on the fixed support 14 inside the cylinder 9; the steam coil 13 has a steam inlet pipe 15 above it and a steam outlet pipe 16 below it; the weighing sensor 19 is located on the outer wall of the lower frustum of the cylinder 9 to weigh and measure the material in the dissolving tank; the discharge pipe 17 is installed at the bottom of the cylinder 9 and its diameter is the same as the bottom diameter of the lower frustum of the cylinder 9.

[0029] Example 2

[0030] A dissolving tank includes a cylindrical body 9, which is composed of two parts: an upper cylindrical body and a lower inverted frustum. The diameter of the cylinder is the same as the diameter of the top of the frustum, and the height of the frustum is 1 / 10 to 1 / 8 of the height of the cylinder. A cover plate 5 is provided at the top of the cylindrical body 9, with a circular hole in the center. A stirring shaft 10 passes through the circular hole and passes sequentially from bottom to top through a mesh filter plate 8, the cover plate 5, and a frame 4. It is connected to a motor reduction gearbox 1 using a coupling 3. The circular mesh filter plate 8 has the same diameter as the cylindrical body 9, is located below the cover plate 5, and is fixed to the cylindrical body. On the inner wall of cylinder 9; impeller 11 is fixed to the end of stirring shaft 10 by bolt 12, and is composed of three stirring blades distributed at 120° to each other along the circumference; steam coil 13 is located at the bottom of the upper cylinder of cylinder 9 and is fixed on the fixed support 14 inside cylinder 9. Steam inlet pipe 15 is provided above steam coil 13 and steam outlet pipe 16 is provided below it; weighing sensor 19 is located on the outer wall of the lower frustum of cylinder 9 to weigh and measure the material in the dissolving tank; discharge pipe 17 is installed at the bottom of cylinder 9 and its diameter is the same as the bottom diameter of the lower frustum of cylinder 9.

[0031] Example 3

[0032] A dissolving tank includes a cylindrical body 9, which is composed of two parts: an upper cylindrical body and a lower inverted frustum. The diameter of the cylinder is the same as the diameter of the top of the frustum, and the height of the frustum is 1 / 10 to 1 / 8 of the height of the cylinder. A cover plate 5 is provided at the top of the cylindrical body 9, with a circular hole in the center. A stirring shaft 10 passes through the circular hole and passes through a mesh filter plate 8, the cover plate 5, and a frame 4 from bottom to top. It is connected to a motor reduction gearbox 1 using a coupling 3. The frame 4 is a hollow frustum with two through-hole inspection holes in the center, and its lower end is fixed to the cover plate 5. The motor reduction gearbox 1 is fixed above the frame 4 by a flange 2 and is connected to a motor to drive the stirring shaft. 10; A circular mesh filter plate 8 with the same diameter as the cylinder 9 is located below the cover plate 5 and fixed to the inner wall of the cylinder 9; An impeller 11 is fixed to the end of the stirring shaft 10 by bolts 12 and consists of three stirring blades distributed at 120° intervals along the circumference; A steam coil 13 is located at the bottom of the upper cylinder of the cylinder 9 and fixed to a fixed support 14 inside the cylinder 9. A steam inlet pipe 15 is located above the steam coil 13 and a steam outlet pipe 16 is located below it; A weighing sensor 19 is located on the outer wall of the lower frustum of the cylinder 9 to weigh and measure the material in the dissolving tank; A discharge pipe 17 is installed at the bottom of the cylinder 9 and has the same diameter as the bottom diameter of the lower frustum of the cylinder 9.

[0033] Example 4

[0034] A dissolving tank includes a cylindrical body 9, which is composed of two parts: an upper cylindrical body and a lower inverted frustum. The diameter of the cylinder and the diameter of the top of the frustum are the same. A cover plate 5 is connected to two symmetrical menisci 7 by hinges 6. The height of the frustum is 1 / 10 to 1 / 8 of the height of the cylinder. The top of the cylindrical body 9 is provided with a cover plate 5, which has a circular hole in the middle. A stirring shaft 10 passes through the circular hole and passes through a mesh filter plate 8, the cover plate 5, and a frame 4 from bottom to top. It is connected to a motor reduction gearbox 1 by a coupling 3. The frame 4 is a hollow frustum with two through inspection holes in the middle, and its lower end is fixed to the cover plate 5. The motor reduction gearbox 1 is fixed above the frame 4 by a flange 2 and is connected to a motor to drive the stirring shaft 10. The perforated filter plate 8 has the same diameter as the cylinder 9, is located below the cover plate 5, and is fixed to the inner wall of the cylinder 9; the impeller 11 is fixed to the end of the stirring shaft 10 by bolts 12, and consists of three stirring blades distributed at 120° to each other along the circumference, with the stirring blades forming a 30° angle with the horizontal direction, so that the dissolved liquid can roll up and down, and be evenly mixed; the steam coil 13 is located at the bottom of the upper cylinder of the cylinder 9, and is fixed to the fixed support 14 inside the cylinder 9, with a steam inlet pipe 15 above the steam coil 13 and a steam outlet pipe 16 below it; the weighing sensor 19 is located on the outer wall of the lower frustum of the cylinder 9 to weigh and measure the material in the dissolving tank; the discharge pipe 17 is installed at the bottom of the cylinder 9, and its diameter is the same as the bottom diameter of the lower frustum of the cylinder 9.

[0035] Example 5

[0036] A dissolving tank includes a cylindrical body 9, which is composed of two parts: an upper cylindrical body and a lower inverted frustum. The diameter of the cylinder is the same as the diameter of the top of the frustum. A cover plate 5 is connected to two symmetrical menisci 7 by hinges 6. The height of the frustum is 1 / 10 to 1 / 8 of the height of the cylinder. The top of the cylindrical body 9 is provided with a cover plate 5, which has a circular hole in the middle. A stirring shaft 10 passes through the circular hole and passes through a mesh filter plate 8, the cover plate 5, and a frame 4 from bottom to top. It is connected to a motor reduction gearbox 1 by a coupling 3. The frame 4 is a hollow frustum with two through inspection holes in the middle, and its lower end is fixed to the cover plate 5. The motor reduction gearbox 1 is fixed above the frame 4 by a flange 2 and is connected to a motor to drive the stirring shaft 10. A circular mesh filter plate 8 with the same diameter as the cylindrical body 9 is located below the cover plate 5 and fixed to the cylindrical body 9. On the inner wall of body 9; impeller 11 is fixed to the end of stirring shaft 10 by bolt 12, and consists of three stirring blades distributed at 120° to each other along the circumference. The stirring blades are at a 30° angle to the horizontal direction, so that the dissolved liquid can roll up and down, and be evenly mixed; steam coil 13 is located at the bottom of the upper cylinder of body 9 and is fixed on the fixed support 14 inside body 9. A steam inlet pipe 15 is provided above the steam coil 13 and a steam outlet pipe 16 is provided below it; there are a total of 5 to 7 coils of steam coil 13 and a total of 5 to 7 layers of fixed support 14; a weighing sensor 19 is located on the outer wall of the lower truncated cone of body 9 to weigh and measure the material in the dissolving tank; discharge pipe 17 is installed at the bottom of body 9 and its diameter is the same as the bottom diameter of the lower truncated cone of body 9; it also includes a fixed bracket 18, which is fixed on the outer wall of the upper cylinder of body 9 and installed horizontally on the ground.

[0037] In actual use, first open the half-moon plates 7 on both sides of the cover plate 5, add an appropriate amount of water, then add the calcium lignosulfonate powder through the mesh filter plate 8 into the dissolving tank to remove any lumps on the mesh filter plate 8. Then turn on the impeller 11 to stir, open the steam valve, and steam flows in from the steam inlet 15 on the steam coil 13 and flows out from the steam outlet 16 below, heating the liquid in the dissolving tank. After the calcium lignosulfonate has completely dissolved, it is discharged from the discharge pipe 17 at the bottom of the dissolving tank for the production of suspended paraffin.

[0038] Because calcium lignosulfonate powder readily absorbs water and clumps during storage, conventional dissolving tanks used for preparing calcium lignosulfonate often result in the outermost layer of powder rapidly absorbing water and forming a coating, creating clumps or granules of viscous substance. The inner powder remains dry and cannot dissolve completely, leading to resource waste and potential blockages in pipes and pumps, disrupting normal production. This invention addresses this issue by using a weighing sensor for precise proportioning. A mesh filter plate removes clumps from the calcium lignosulfonate powder, ensuring it falls evenly into the dissolving tank in powder form, preventing the formation of granules and viscous, incompletely dissolved substances. A unique impeller structure allows the dissolved liquid to tumble within the tank, resulting in more uniform dissolution. A steam heating coil heats the liquid in the tank, increasing the dissolution rate and reactivity, reducing viscosity for easier discharge, and minimizing the risk of adhesion to the tank walls and pipe blockages.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the description of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A dissolving vessel, comprising a cylindrical body (9), characterized in that: The cylinder (9) consists of two parts: an upper cylinder and a lower inverted frustum. The diameter of the cylinder is the same as the diameter of the top of the frustum. The top of the cylinder (9) is provided with a cover plate (5) with a circular hole in the middle through which the stirring shaft (10) passes. A circular mesh filter plate (8) with the same diameter as the cylinder (9) is located below the cover plate (5) and fixed to the inner wall of the cylinder (9). The impeller (11) is fixed to the end of the stirring shaft (10) by bolts (12), and consists of three stirring blades moving in a circumferential direction. The components are arranged in a 120° distribution; the steam coil (13) is located at the bottom of the upper cylinder of the cylinder (9) and fixed on the fixed support (14) inside the cylinder (9); the steam coil (13) is provided with a steam inlet pipe (15) above it and a steam outlet pipe (16) below it; the weighing sensor (19) is located on the outer wall of the lower frustum of the cylinder (9) to weigh and measure the material in the dissolving tank; the discharge pipe (17) is installed at the bottom of the cylinder (9) and its diameter is the same as the bottom diameter of the lower frustum of the cylinder (9).

2. The dissolving tank according to claim 1, characterized in that: The height of the frustum is 1 / 10 to 1 / 8 of the height of the cylinder.

3. The dissolving tank according to claim 1, characterized in that: The stirring shaft (10) passes through the mesh filter plate (8), the cover plate (5) and the frame (4) from bottom to top, and is connected to the motor gearbox (1) by a coupling (3).

4. The dissolving tank according to claim 3, characterized in that: The frame (4) is a hollow frustum with two through inspection holes in the middle and the lower end is fixed to the cover plate (5).

5. The dissolving tank according to claim 3, characterized in that: The motor gearbox (1) is fixed above the frame (4) by a flange (2), and the motor gearbox (1) is connected to a motor to drive the stirring shaft (10).

6. The dissolving tank according to claim 1, characterized in that: The cover plate (5) is connected to the two symmetrical menisci (7) by hinges (6).

7. The dissolving tank according to claim 1, characterized in that: The stirring blades are at a 30° angle to the horizontal, allowing the dissolved liquid to tumble and swirl, resulting in a uniform mixture.

8. The dissolving tank according to claim 1, characterized in that: The steam coil (13) has a total of 5 to 7 turns.

9. The dissolving tank according to claim 1, characterized in that: The fixed support (14) corresponds to a total of 5 to 7 layers of the steam coil (13).

10. The dissolving tank according to any one of claims 1-9, characterized in that: It also includes a fixed bracket (18), which is fixed to the outer wall of the upper cylinder of the cylinder (9) and installed horizontally on the ground.

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