Glass fiber tank for sewage treatment and preparation process

Abstract

The invention belongs to the technical field of glass fiber tank production, and particularly relates to a glass fiber tank for sewage treatment and a preparation technology.The glass fiber tank is made of glass fiber and resin composite materials, a glass fiber layer is wound on a mold through a surrounding method, and the glass fiber tank structurally comprises an inner cavity and a shell; the inner cavity is used for storing sewage, the shell is made of a multi-layer glass fiber and resin composite material by adopting a surrounding method, and the fiber direction of each layer of glass fiber of the shell is at different angles, so that the compressive strength and the corrosion resistance of the shell are enhanced. According to the glass fiber tank for sewage treatment and the preparation technology, the thickness of the glass fiber layer of the shell is set to be 2-6 mm, the weight of the resin accounts for 10%-30% of the total weight of a glass fiber composite material, the overall weight of the shell can be effectively reduced, and meanwhile the overall performance of the composite material can be improved through the proper resin proportion.

Description

Technical Field

[0001] The invention relates to the technical field of glass fiber tank production, and in particular to a glass fiber tank for sewage treatment and a preparation process thereof. Background Art

[0002] With the continuous development of sewage treatment technology, traditional metal storage tanks have gradually failed to meet the needs of modern sewage treatment systems due to their susceptibility to corrosion, heavy weight and limited service life. In contrast, glass fiber composite materials have become a commonly used tank material in sewage treatment equipment due to their excellent corrosion resistance, light weight and strong mechanical properties.

[0003] However, the existing sewage treatment tanks generally have problems such as poor corrosion resistance, insufficient strength, heavy weight, high cost, poor environmental protection and insufficient adaptability. These problems make the existing technology unable to fully meet the needs of the sewage treatment industry in the face of long-term use, high-intensity loads, complex chemical environments and increasingly stringent environmental protection requirements. Therefore, a new, durable, lightweight and environmentally friendly material and structural design is urgently needed to solve the above problems and promote the performance improvement and environmental adaptability of sewage treatment equipment.

[0004] Although glass fiber composite materials have many advantages, they still face complex molding processes in actual production, that is, the weaving, impregnation and curing processes of glass fibers require high process technology and high technical requirements for operators. If the operation is improper, it is easy to cause uneven or defective material properties. Therefore, the present invention solves the shortcomings of the above technical problems. Summary of the invention

[0005] Based on the above existing technical problems, the present invention proposes a glass fiber tank for sewage treatment and a preparation process.

[0006] The present invention proposes a glass fiber tank for sewage treatment, which is made of glass fiber and resin composite material, and the glass fiber layer is wound on a mold by a winding method. The structure of the glass fiber tank includes an inner cavity and an outer shell, the inner cavity is used to store sewage, and the outer shell is made of multiple layers of glass fiber and resin composite material by a winding method. The fiber direction of each layer of glass fiber in the outer shell is at different angles to enhance its compressive strength and corrosion resistance.

[0007] Preferably, the glass fiber layer of the shell has a thickness of 2-6 mm, the weight of the resin accounts for 10%-30% of the total weight of the glass fiber composite material, and the resin is one of epoxy resin, vinyl ester resin or unsaturated polyester resin.

[0008] Through the above technical solution, in order to reduce the overall weight of the shell and improve the performance of the shell, the glass fiber composite material itself has high strength and rigidity. At the same time, due to the light weight of the glass fiber, it can effectively reduce the overall weight of the shell. The resin weight accounts for 10%-30%, which helps to optimize the ratio of glass fiber to resin and ensure the best balance between the strength and toughness of the composite material. Too much resin will make the material brittle, and too little may affect the structural strength. Therefore, an appropriate resin ratio helps to improve the overall performance of the composite material.

[0009] Preferably, the shell comprises at least three layers of glass fiber composite material, wherein the outer layer is a protective layer, which is a composite material of resin and glass fiber, the inner layer is a load-bearing layer, the glass fiber yarn winding angle of the load-bearing layer is 0° or 90°, and the glass fiber yarn winding angle of the middle layer is ±45.

[0010] Through the above technical solution, in the load-bearing layer, the glass fiber yarn winding angle is 0° or 90°, so that the layer can share the external load to the maximum extent when subjected to force. The yarn angles of 0° and 90° can effectively resist axial or lateral tension and compression forces, enhance the tensile strength and compressive strength of the load-bearing layer, and ensure that the shell has good stability under load. The glass fiber yarn of the middle layer is arranged at an angle of ±45°. This angle design can effectively withstand shear force and torque load, enhance the shear resistance of the composite material, and thus improve the overall rigidity and toughness of the composite material.

[0011] Preferably, the surface of the inner cavity is coated with an inner lining layer, the surface of the inner lining layer is coated with a super-hydrophobic coating, a reinforcing belt is wound along the transverse direction of the glass fiber tank, and the material of the reinforcing belt is high-density glass fiber cloth.

[0012] Through the above technical solution, the lining layer can effectively block the direct contact between liquid or gas and glass fiber composite materials, thereby reducing the risk of corrosion or contamination, especially in humid or chemical environments, which can extend the service life of the equipment. The super-hydrophobic coating makes the inner cavity surface extremely water-repellent, which can effectively prevent moisture adhesion and accumulation. Adding high-density glass fiber cloth to the lateral winding of the glass fiber tank can significantly enhance the strength and tensile properties of the composite material.

[0013] Preferably, the outer surface of the reinforcement belt is provided with an outer surface layer, the material of the outer surface layer is one of polyester resin or fluororesin, and the outer surface of the outer surface layer is coated with a protective coating, the material of the protective coating is one of polyurethane coating or acrylic coating.

[0014] Through the above technical scheme, both polyester resin and fluororesin have excellent chemical corrosion resistance, and can effectively block the corrosion of acid, alkali, salt and other chemical substances in the external environment to the reinforcing belt. This layer can prevent the corrosive substances in the external environment from damaging the glass fiber composite material and extend the service life of the composite material. Both the polyurethane coating and the acrylic coating have high hardness and excellent wear resistance, and can effectively resist physical impact, friction and scratches, and protect the outer surface from damage, especially during equipment operation, transportation or collision, which can reduce mechanical damage.

[0015] The present invention provides a process for preparing a glass fiber tank for sewage treatment, comprising the following steps:

[0016] S1. Mold preparation: The mold material is metal material, the surface must be smooth, and the mold surface must be clean, free of oil, dust, and impurities to avoid affecting the bonding of glass fiber and resin.

[0017] S2. Mold release agent coating: Apply a layer of mold release agent on the mold surface to ensure that the fiberglass tank can be demoulded smoothly after molding.

[0018] S3. Preparation of glass fiber: Select glass fiber yarn, choose the thickness and density of glass fiber according to the strength requirements of the tank body, and prepare glass fiber rolls of corresponding length according to the size and structural requirements of the tank body.

[0019] S4. Resin preparation: According to the curing agent requirements of the resin, mix the resin and curing agent in proportion.

[0020] S5. Surrounding molding process: According to the load-bearing requirements of the tank body, the winding angle of the glass fiber and the fiber direction of each layer are designed. Usually, the winding angle of the first layer is 0° or 90°, and then the glass fibers in different directions are stacked layer by layer through the angle adjustment mechanism to increase the strength of the tank body. In the surrounding process, the glass fiber yarn is wound around the outer surface of the mold through the winding mechanism, and the resin is impregnated through the impregnation mechanism to make it fully combined with the resin.

[0021] S6. Curing process: The curing of the fiberglass tank is completed by heating curing, the curing temperature is 80-120°C, and the curing time ranges from 2 to 6 hours.

[0022] S7. Demolding and finishing: After curing is completed, wait for the fiberglass tank to cool to room temperature, then gently demould it, polish and coat the inner and outer surfaces of the tank after demoulding to enhance the weather resistance, corrosion resistance and appearance quality of the tank.

[0023] S8. Quality inspection and testing: Check whether the surface of the tank is flat and smooth, without cracks and bubble defects, and conduct physical performance tests on compression, tension and bending resistance. For tanks used for sewage treatment, corrosion resistance tests are also required to confirm that they can store sewage for a long time.

[0024] Preferably, the winding mechanism in S5 includes a support frame, the mold is rotatably connected to the surface of the support frame through a roller shaft, a rotating motor is fixedly connected to the upper surface of the support frame, the outer surface of the output shaft of the rotating motor is fixedly connected to the roller shaft of the mold through a coupling, and a yarn roller is provided on one side of the angle adjustment mechanism through another support frame, and the glass fiber yarn is wound on the outer surface of the yarn roller.

[0025] Through the above technical solution, in order to achieve continuous winding of the glass fiber yarn on the outer surface of the mold, the roller shaft is driven to rotate by rotating the motor, so that the mold rotates continuously, thereby pulling and winding the glass fiber yarn on the outer surface of the yarn roller.

[0026] Preferably, the angle adjustment mechanism in S5 includes a workbench arranged between the two support frames, the upper surface of the workbench is rotatably connected to a reciprocating screw through a rotating base, the outer surface of the reciprocating screw is installed with an adjustment plate through a connecting sleeve, the connecting sleeve is slidably clamped on the outer surface of the reciprocating screw, the upper surface of the workbench is fixedly connected to a reduction motor, the outer surface of the output shaft of the reduction motor is fixedly connected to the outer surface of the reciprocating screw through a coupling, the upper surface of the workbench is fixedly connected to symmetrically distributed guide slide rods through a mounting base, and the outer surface of the guide slide rods is fixedly connected to the lower surface of the adjustment plate through a sliding block that is slidably sleeved.

[0027] Through the above technical scheme, in order to pull and guide the winding of the glass fiber yarn, when the mold rotates to pull the glass fiber yarn, the reduction motor drives the reciprocating screw to rotate, so that the connecting tube sleeve moves back and forth at a uniform speed on its outer surface, so that it drives the adjustment plate to move along with the winding of the glass fiber yarn on the mold, and then the glass fiber yarn can be evenly wound on the outer surface of the mold, and the setting of the guide slide rod can stably adjust the horizontal movement of the adjustment plate.

[0028] Preferably, the angle adjustment mechanism also includes a connecting shaft rotatably connected to the upper surface of one end of the adjusting plate, the upper surface of the connecting shaft is fixedly connected to a tensioning shell with a round tube, the adjusting plate is provided with a movable cavity inside, the inner wall of the movable cavity is rotatably connected to an adjusting screw through a bearing, the outer surface of the adjusting screw is threadedly sleeved with an adjusting sleeve, the inner bottom wall of the movable cavity is rotatably connected to the movable shaft, the upper end outer surface of the movable shaft is fixedly sleeved with a driving plate, the upper surface of the driving plate is hinged to the lower surface of one end of the tensioning shell, the middle outer surface of the movable shaft is fixedly sleeved with a half gear, one side surface of the adjusting sleeve is fixedly connected with an adjusting tooth, the adjusting tooth meshes with the half gear, the inner bottom wall of the movable cavity is penetrated by a limiting groove, the upper surface of the movable shaft is fixedly connected to a limiting block, the lower surface of the limiting block is slidably connected to the inner bottom wall of the movable cavity, the outer surface of the adjusting plate is fixedly connected to a driving motor, and the outer surface of the output shaft of the driving motor is fixedly connected to the outer surface of the adjusting screw.

[0029] Through the above technical scheme, in order to design the winding angle of the glass fiber and the fiber direction of each layer, the tensioning shell is deflected left and right, and the glass fiber yarn passes through the tensioning shell, so that the winding direction of the glass fiber yarn can be changed. In order to control the left and right deflection of the tensioning shell, the driving motor drives the adjusting screw to rotate, so that the adjusting sleeve moves horizontally in the movable cavity, so that the adjusting teeth on its surface can drive the half gear to rotate, and the movable shaft rotates accordingly, and one end of the tensioning shell is limited by the connecting shaft, and then the driving plate on the outer surface of the upper end drives the other end of the tensioning shell to deflect, so that it changes the winding angle of the glass fiber and the fiber direction of each layer. At the same time, through the meshing of the adjusting teeth and the half gear, not only the deflection angle of the driving plate can be controlled, but also there is a self-locking effect between the two, so that the winding angle of the glass fiber can be accurately adjusted. In order to guide and limit the movement of the tensioning shell, the movable shaft passes through the limiting groove, and when the tensioning shell is deflected, the limiting groove slides on the outer surface of the movable shaft.

[0030] Preferably, the impregnation mechanism in S5 includes a glue impregnation trough body fixedly connected to the inner surface of the tensioning shell, the inner top surface of the tensioning shell is fixedly connected to a downward pressure cylinder through a mounting block, the piston rod surface of the downward pressure cylinder is fixedly connected to a portal frame, the inner surface of the portal frame is rotatably connected to a plurality of guide rollers with smooth surfaces and inconsistent heights, the inner bottom surface of the tensioning shell is fixedly connected to a receiving trough body with an inclined surface through a connecting block, the inner surface of the round tube of the tensioning shell is slidably connected to a tensioning plate with a tensioning guide wheel, the outer surface of the round tube is fixedly connected to a pushing cylinder, and the outer surface of the piston rod of the pushing cylinder is fixedly connected to a side surface of the tensioning plate.

[0031] Through the above technical scheme, in order to make each layer of glass fiber and resin coated evenly, the pulled glass fiber yarn passes through multiple guide rollers, and as the downward pressure cylinder pushes the portal frame downward, the guide rollers press the glass fiber yarn into the impregnation tank body with resin. During the transmission process of the glass fiber yarn impregnated with resin, the resin is received by the receiving tank body to receive the dripping resin, and the resin flows into the impregnation tank body along the tank surface and is collected. In order to ensure the tension of the glass fiber yarn and avoid excessive tension of the glass fiber yarn after the angle is adjusted, the tensioning plate is pushed by the pushing cylinder to move so that the tension of the glass fiber yarn can be adjusted.

[0032] The beneficial effects of the present invention are:

[0033] 1. By setting the thickness of the glass fiber layer of the shell to 2-6 mm, the weight of the resin accounts for 10%-30% of the total weight of the glass fiber composite material, which can effectively reduce the overall weight of the shell. At the same time, the appropriate resin ratio helps to improve the overall performance of the composite material.

[0034] 2. The surface of the inner cavity is coated with an inner lining layer, the surface of the inner lining layer is coated with a super-hydrophobic coating, and a reinforcing belt is wrapped along the horizontal direction of the fiberglass tank. The super-hydrophobic coating can be used to make the surface of the inner cavity have extremely strong water repellency, so that it can effectively prevent moisture from adhering and accumulating, thereby reducing the risk of corrosion or pollution. At the same time, adding high-density glass fiber cloth to the horizontal winding of the fiberglass tank can significantly enhance the strength and tensile properties of the composite material.

[0035] 3. By setting up an angle adjustment mechanism, the winding angle of the glass fiber and the fiber direction of each layer can be changed during the continuous winding of the glass fiber filaments, thereby improving the shear resistance of the glass fiber tank and improving its overall rigidity and toughness. During the adjustment process, the adjusting screw is driven by the driving motor to rotate, so that the adjusting sleeve moves horizontally in the movable cavity, so that the adjusting teeth on its surface can drive the half gear to rotate, and the movable shaft rotates accordingly, and one end of the tensioning shell is limited by the connecting shaft, and then the driving plate on the outer surface of the upper end drives the other end of the tensioning shell to deflect, so that it changes the winding angle of the glass fiber and the fiber direction of each layer, thereby avoiding defects in the preparation process due to improper manual operation.

[0036] 4. By setting up the impregnation mechanism, the outer surface of the glass fiber yarn can be evenly coated with resin. During the adjustment process, the pulled glass fiber yarn passes through multiple guide rollers, and the downward pressure cylinder pushes the door frame downward, so that the guide roller presses the glass fiber yarn into the impregnation tank with resin, so that the glass fiber yarn is fully combined with the resin, and the winding density of the glass fiber yarn on the outer surface of the mold is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1A schematic diagram of a glass fiber tank for sewage treatment and a preparation process proposed by the present invention;

[0038] Figure 2 A three-dimensional diagram of a reciprocating screw structure of a glass fiber tank for sewage treatment and a preparation process proposed by the present invention;

[0039] Figure 3 A three-dimensional diagram of the structure of an adjustment plate of a glass fiber tank for sewage treatment and a preparation process proposed by the present invention;

[0040] Figure 4 A three-dimensional diagram of a half-gear structure of a glass fiber tank for sewage treatment and a preparation process proposed by the present invention;

[0041] Figure 5 A three-dimensional diagram of the adjusting tooth structure of a glass fiber tank for sewage treatment and a preparation process proposed by the present invention;

[0042] Figure 6 A three-dimensional diagram of a receiving tank structure of a glass fiber tank for sewage treatment and a preparation process proposed by the present invention;

[0043] Figure 7 A three-dimensional diagram of a driving cylinder structure of a glass fiber tank for sewage treatment and a preparation process proposed by the present invention;

[0044] Figure 8 A three-dimensional diagram of the protective coating structure of a glass fiber tank for sewage treatment and a preparation process proposed by the present invention;

[0045] Fig. 9 This is a three-dimensional diagram of the reinforcing belt structure of a glass fiber tank for sewage treatment and a preparation process proposed by the present invention.

[0046] In the figure: 1, shell; 2, inner cavity; 21, lining layer; 22, super hydrophobic coating; 23, reinforcing belt; 24, outer surface layer; 25, protective coating; 3, mold; 4, winding mechanism; 41, support frame; 42, rotating motor; 43, yarn roller; 5, angle adjustment mechanism; 51, workbench; 52, reciprocating screw; 53, adjustment plate; 54, reduction motor; 55, guide slide rod; 56, connecting shaft; 5 7. Tensioning shell; 58. Movable cavity; 59. Adjusting screw; 60. Adjusting sleeve; 61. Movable shaft; 62. Driving plate; 63. Half gear; 64. Adjusting tooth; 65. Limiting groove; 66. Limiting block; 67. Driving motor; 7. Impregnation mechanism; 71. Glue impregnation tank body; 72. Pressing cylinder; 73. Door frame; 74. Guide roller; 75. Receiving tank body; 76. Tensioning plate; 77. Pushing cylinder. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0048] Reference Figure 8-Figure 9 A glass fiber tank for sewage treatment, the glass fiber tank is made of glass fiber and resin composite material, and the glass fiber layer is wound on a mold 3 by a winding method. The structure of the glass fiber tank includes an inner cavity 2 and an outer shell 1. The inner cavity 2 is used to store sewage. The outer shell 1 is made of multiple layers of glass fiber and resin composite material by a winding method. The fiber direction of each layer of glass fiber in the outer shell 1 is at different angles to enhance its compressive strength and corrosion resistance.

[0049] In order to reduce the overall weight of the shell 1 and improve the performance of the shell 1, the thickness of the glass fiber layer of the shell 1 is 2-6mm, and the weight of the resin accounts for 10%-30% of the total weight of the glass fiber composite material. The resin is one of epoxy resin, vinyl ester resin or unsaturated polyester resin. The glass fiber composite material itself has high strength and rigidity. At the same time, due to the light weight of the glass fiber, it can effectively reduce the overall weight of the shell 1. The resin weight accounting for 10%-30% helps to optimize the ratio of glass fiber and resin, ensuring that the strength and toughness of the composite material reach the best balance. Too much resin will make the material brittle, and too little may affect the structural strength. Therefore, an appropriate resin ratio helps to improve the overall performance of the composite material.

[0050] The outer shell 1 includes at least three layers of glass fiber composite material, wherein the outer layer is a protective layer, which is a composite material of resin and glass fiber, and the inner layer is a load-bearing layer. The glass fiber yarn winding angle of the load-bearing layer is 0° or 90°, and the glass fiber yarn winding angle of the middle layer is ±45. In the load-bearing layer, the glass fiber yarn winding angle is 0° or 90°, so that this layer can share the external load to the maximum extent when subjected to force. The yarn angles of 0° and 90° can effectively resist axial or lateral tension and compression forces, enhance the tensile strength and compressive strength of the load-bearing layer, and ensure that the outer shell 1 has good stability under load. The glass fiber yarn of the middle layer is arranged at an angle of ±45°. This angle design can effectively withstand shear force and torque load, enhance the shear resistance of the composite material, and thus improve the overall rigidity and toughness of the composite material.

[0051] The surface of the inner cavity 2 is coated with an inner lining layer 21, and the surface of the inner lining layer 21 is coated with a super-hydrophobic coating 22. A reinforcing belt 23 is wrapped along the horizontal direction of the glass fiber tank. The reinforcing belt 23 is made of high-density glass fiber cloth. The inner lining layer 21 can effectively block the direct contact between liquid or gas and the glass fiber composite material, thereby reducing the risk of corrosion or pollution, especially in humid or chemical environments, and can extend the service life of the equipment. The super-hydrophobic coating 22 makes the surface of the inner cavity 2 extremely water-repellent, which can effectively prevent moisture adhesion and accumulation. Adding high-density glass fiber cloth to the horizontal winding of the glass fiber tank can significantly enhance the strength and tensile properties of the composite material.

[0052] The outer surface of the reinforcing belt 23 is provided with an outer surface layer 24, and the material of the outer surface layer 24 is one of polyester resin or fluororesin. The outer surface of the outer surface layer 24 is coated with a protective coating 25, and the material of the protective coating 25 is one of polyurethane coating or acrylic coating. Both polyester resin and fluororesin have excellent chemical corrosion resistance and can effectively block the corrosion of acid, alkali, salt and other chemical substances in the external environment to the reinforcing belt 23. This layer can prevent corrosive substances in the external environment from invading the glass fiber composite material and extend the service life of the composite material. Both polyurethane coating and acrylic coating have high hardness and excellent wear resistance, can effectively resist physical impact, friction and scratches, and protect the outer surface from damage, especially during equipment operation, transportation or collision, can reduce mechanical damage.

[0053] By setting the thickness of the glass fiber layer of the shell 1 to 2-6 mm, the weight of the resin accounts for 10%-30% of the total weight of the glass fiber composite material, which can effectively reduce the overall weight of the shell 1. At the same time, the appropriate resin ratio helps to improve the overall performance of the composite material.

[0054] By setting the surface of the inner cavity 2 to be coated with an inner lining layer 21, the surface of the inner lining layer 21 is coated with a super-hydrophobic coating 22, and a reinforcing belt 23 is wrapped along the horizontal direction of the glass fiber tank, the super-hydrophobic coating 22 can be used to make the surface of the inner cavity 2 have extremely strong water repellency, so that it can effectively prevent moisture from adhering and accumulating, thereby reducing the risk of corrosion or pollution. At the same time, adding high-density glass fiber cloth to the horizontal winding of the glass fiber tank can significantly enhance the strength and tensile properties of the composite material.

[0055] Reference Figure 1-Figure 7 , a preparation process of a glass fiber tank for sewage treatment, comprising the following steps:

[0056] S1. Preparation of mold 3: The material of mold 3 is metal material, and the surface needs to be smooth. The surface of mold 3 is clean, free of oil, dust, and impurities to avoid affecting the combination of glass fiber and resin.

[0057] S2. Mold release agent coating: a layer of mold release agent is applied on the surface of the mold 3 to ensure that the fiberglass tank can be smoothly demoulded after molding.

[0058] S3. Preparation of glass fiber: Select glass fiber yarn, choose the thickness and density of glass fiber according to the strength requirements of the tank body, and prepare glass fiber rolls of corresponding length according to the size and structural requirements of the tank body.

[0059] S4. Resin preparation: According to the curing agent requirements of the resin, mix the resin and curing agent in proportion.

[0060] S5, wrapping molding process: according to the load-bearing requirements of the tank body, the wrapping angle of the glass fiber and the fiber direction of each layer are designed. Usually, the wrapping angle of the first layer is 0° or 90°. Then, the glass fibers in different directions are stacked layer by layer through the angle adjustment mechanism 5 to increase the strength of the tank body. In the wrapping process, the glass fiber yarn is wound around the outer surface of the mold 3 through the winding mechanism 4, and is impregnated with resin through the impregnation mechanism 7 to fully combine with the resin.

[0061] S6. Curing process: The curing of the fiberglass tank is completed by heating curing, the curing temperature is 80-120°C, and the curing time ranges from 2 to 6 hours.

[0062] S7. Demolding and finishing: After curing is completed, wait for the fiberglass tank to cool to room temperature, then gently demould it, polish and coat the inner and outer surfaces of the tank after demoulding to enhance the weather resistance, corrosion resistance and appearance quality of the tank.

[0063] S8. Quality inspection and testing: Check whether the surface of the tank is flat and smooth, without cracks and bubble defects, and conduct physical performance tests on compression, tension and bending resistance. For tanks used for sewage treatment, corrosion resistance tests are also required to confirm that they can store sewage for a long time.

[0064] In order to achieve continuous winding of the glass fiber yarn on the outer surface of the mold 3, the winding mechanism 4 in S5 includes a support frame 41, and the mold 3 is rotatably connected to the surface of the support frame 41 through a roller shaft. A rotating motor 42 is fixedly connected to the upper surface of the support frame 41, and the outer surface of the output shaft of the rotating motor 42 is fixedly connected to the roller shaft of the mold 3 through a coupling. A yarn roller 43 is mounted on one side of the angle adjustment mechanism 5 through another support frame 41, and the glass fiber yarn is wound on the outer surface of the yarn roller 43. The roller shaft is driven to rotate by the rotating motor 42, so that the mold 3 rotates continuously, so that the glass fiber yarn on the outer surface of the yarn roller 43 can be pulled and wound.

[0065] In order to guide the winding of the glass fiber yarn, the angle adjustment mechanism 5 in S5 includes a workbench 51 arranged between the two support frames 41. The upper surface of the workbench 51 is rotatably connected to a reciprocating screw 52 through a rotating base. The outer surface of the reciprocating screw 52 is equipped with an adjustment plate 53 through a connecting sleeve. The connecting sleeve is slidably connected to the outer surface of the reciprocating screw 52. The upper surface of the workbench 51 is fixedly connected to a reduction motor 54. The outer surface of the output shaft of the reduction motor 54 is fixedly connected to the outer surface of the reciprocating screw 52 through a coupling. The upper surface of the workbench 51 is connected to the outer surface of the reciprocating screw 52 through a connecting sleeve. The mounting base is fixedly connected with symmetrically distributed guide slide bars 55, and the outer surface of the guide slide bars 55 is fixedly connected to the lower surface of the adjustment plate 53 through a sliding sleeve. When the mold 3 rotates to pull the glass fiber yarn, the reduction motor 54 drives the reciprocating screw 52 to rotate, so that the connecting tube sleeve moves back and forth at a uniform speed on its outer surface, so that it drives the adjustment plate 53 to move as the glass fiber yarn is wound on the mold 3, and then the glass fiber yarn can be evenly wound on the outer surface of the mold 3. The setting of the guide slide bars 55 can stably adjust the horizontal movement of the adjustment plate 53.

[0066] In order to design the winding angle of the glass fiber and the fiber direction of each layer, the angle adjustment mechanism 5 also includes a connecting shaft 56 rotatably connected to the upper surface of one end of the adjustment plate 53. The upper surface of the connecting shaft 56 is fixedly connected to a tensioning shell 57 with a round tube. The tensioning shell 57 is used to deflect left and right, and the glass fiber yarn passes through the tensioning shell 57, so that the winding direction of the glass fiber yarn can be changed. In order to control the left and right deflection of the tensioning shell 57, an active cavity 58 is opened inside the adjustment plate 53. The inner wall of the active cavity 58 is rotatably connected to the adjustment plate 53 through a bearing. The outer surface of the adjusting screw 59 is threadedly sleeved with an adjusting sleeve 60, the inner bottom wall of the movable cavity 58 is rotatably connected with a movable shaft 61, the upper end outer surface of the movable shaft 61 is fixedly sleeved with a driving plate 62, the upper surface of the driving plate 62 is hinged to the lower surface of one end of the tensioning housing 57, the middle outer surface of the movable shaft 61 is fixedly sleeved with a half gear 63, one side surface of the adjusting sleeve 60 is fixedly connected with an adjusting tooth 64, the adjusting tooth 64 is meshed with the half gear 63, the inner bottom wall of the movable cavity 58 is penetrated to form a limiting groove 65, the upper end of the movable shaft 61 is fixedly sleeved with a driving plate 62, the upper surface of the driving plate 62 is hinged to the lower surface of one end of the tensioning housing 57, the middle outer surface of the movable shaft 61 is fixedly sleeved with a half gear 63, the ... inner bottom wall of the movable cavity 58 is penetrated to form a limiting groove 65, the upper end of the movable shaft 61 is fixedly sleeved with a driving plate 62, the upper surface of the driving plate 62 is hinged to the lower surface of the tensioning housing 57, the middle outer surface of the movable shaft 61 is fixedly sleeved with a half gear 63, the upper end of the movable shaft 61 is fixed The surface is fixedly connected with a limit block 66, and the lower surface of the limit block 66 is slidably connected to the inner bottom wall of the movable cavity 58. The outer surface of the adjustment plate 53 is fixedly connected with a driving motor 67, and the outer surface of the output shaft of the driving motor 67 is fixedly connected to the outer surface of the adjusting screw 59. The adjusting screw 59 is driven to rotate by the driving motor 67, so that the adjusting sleeve 60 moves horizontally in the movable cavity 58, so that the adjusting teeth 64 on the surface can drive the half gear 63 to rotate, and the movable shaft 61 rotates accordingly, and one end of the tensioning housing 57 is limited by the connecting shaft 56. , and then the driving plate 62 on the outer surface of the upper end drives the other end of the tensioning shell 57 to deflect, so that it changes the winding angle of the glass fiber and the fiber direction of each layer. At the same time, by adjusting the engagement of the tooth 64 with the half gear 63, not only the deflection angle of the driving plate 62 can be controlled, but also there is a self-locking effect between the two, so that the winding angle of the glass fiber can be accurately adjusted. In order to guide and limit the movement of the tensioning shell 57, the movable shaft 61 passes through the limiting groove 65. When the tensioning shell 57 is deflected, the limiting groove 65 slides on the outer surface of the movable shaft 61.

[0067] By setting up the angle adjustment mechanism 5, the winding angle of the glass fiber and the fiber direction of each layer can be changed during the continuous winding of the glass fiber yarn, thereby improving the shear resistance of the glass fiber tank and improving its overall rigidity and toughness. During the adjustment process, the adjusting screw 59 is driven to rotate by the driving motor 67, so that the adjusting sleeve 60 moves horizontally in the movable cavity 58, so that the adjusting teeth 64 on the surface of the adjusting screw 59 can drive the half gear 63 to rotate, and the movable shaft 61 rotates accordingly. One end of the tensioning shell 57 is limited by the connecting shaft 56, and then the driving plate 62 on the outer surface of the upper end drives the other end of the tensioning shell 57 to deflect, so that the winding angle of the glass fiber and the fiber direction of each layer are changed, thereby avoiding defects in the preparation process due to improper manual operation.

[0068] In order to make each layer of glass fiber and resin coated evenly, the impregnation mechanism 7 in S5 includes a dipping tank body 71 fixedly connected to the inner surface of the tensioning shell 57, the inner top surface of the tensioning shell 57 is fixedly connected to a downward pressure cylinder 72 through a mounting block, the piston rod surface of the downward pressure cylinder 72 is fixedly connected to a gate frame 73, the inner surface of the gate frame 73 is rotatably connected to a plurality of guide rollers 74 with smooth surfaces and inconsistent heights, the inner bottom surface of the tensioning shell 57 is fixedly connected to a receiving tank body 75 with an inclined surface through a connecting block, the pulled glass fiber yarn passes through a plurality of guide rollers 74, and as the downward pressure cylinder 72 pushes the gate frame 73 downward, the guide rollers 74 push the glass fiber yarn to the inner surface of the tensioning shell 57. The fiberglass yarn is pressed into the resin impregnation tank 71 with resin. During the transmission process, the resin-impregnated glass fiber yarn is received by the receiving tank 75 for the spilled resin, and flows into the impregnation tank 71 along the tank surface for collection. In order to ensure the tension of the glass fiber yarn and avoid excessive tension of the glass fiber yarn after the angle is adjusted, the inner surface of the circular tube of the tensioning shell 57 is slidably connected with a tensioning plate 76 with a tensioning guide wheel, and the outer surface of the circular tube is fixedly connected with a pushing cylinder 77. The outer surface of the piston rod of the pushing cylinder 77 is fixedly connected to the surface of one side of the tensioning plate 76. The tensioning plate 76 is pushed by the pushing cylinder 77 to move so as to adjust the tension of the glass fiber yarn.

[0069] By setting up the impregnation mechanism 7, the outer surface of the glass fiber yarn can be evenly coated with resin. During the adjustment process, the pulled glass fiber yarn passes through multiple guide rollers 74, and the downward pressure cylinder 72 pushes the door frame 73 downward, so that the guide rollers 74 press the glass fiber yarn into the impregnation tank 71 with resin, so that the glass fiber yarn is fully combined with the resin, and the winding density of the glass fiber yarn on the outer surface of the mold 3 is uniform.

[0070] Working principle: In a specific embodiment of the present invention, the winding angle of the glass fiber and the fiber direction of each layer are designed according to the load-bearing requirements of the tank body. Usually, the winding angle of the first layer is 0° or 90°, that is, at this time, the tensioning shell 57 is horizontally parallel to the surface of the opposite side of the adjustment plate 53. When the first layer is wound, the roller shaft is driven to rotate by the rotating motor 42, so that the mold 3 rotates continuously, so that the glass fiber yarn on the outer surface of the yarn roller 43 can be pulled and wound. During the winding process, the reduction motor 54 drives the reciprocating screw 52 to rotate, so that the connecting sleeve moves back and forth at a uniform speed on its outer surface, so that it drives the adjustment plate 53 to move as the glass fiber yarn is wound on the mold 3;

[0071] At the same time, the outer surface of the glass fiber yarn is coated with resin. During coating, the drawn glass fiber yarn passes through a plurality of guide rollers 74. As the downward pressure cylinder 72 pushes the door frame 73 downward, the guide rollers 74 press the glass fiber yarn into the resin impregnation tank 71. During the transmission process, the glass fiber yarn impregnated with resin is received by the receiving tank 75 to receive the dripping resin, and flows into the impregnation tank 71 along the tank surface for collection. Thus, the outer surface of the glass fiber yarn is wrapped with resin, so that the resin can effectively penetrate into the glass fiber yarn to form a uniform cured film, thereby increasing the corrosion resistance of the glass fiber and improving the bonding force with other layers.

[0072] After the first layer of glass fiber yarn is wound, the drive motor 67 on the outer surface of the adjustment plate 53 drives the adjustment screw 59 to rotate, so that the adjustment sleeve 60 moves horizontally in the movable cavity 58, so that the adjustment teeth 64 on its surface can drive the half gear 63 to rotate, and the movable shaft 61 rotates accordingly, and one end of the tensioning shell 57 is limited by the connecting shaft 56, and then the drive plate 62 on the outer surface of the upper end drives the other end of the tensioning shell 57 to deflect, so as to change the winding angle of the glass fiber and the fiber direction of each layer, that is, first rotate clockwise so that the drive plate 62 drives the front end of the tensioning shell 57 to deflect more than 45°, so as to ensure that the glass fiber yarn is deflected 45° to one side for the second layer of winding. In order to avoid excessive tension of the glass fiber yarn, the tensioning plate 76 is pushed by the push cylinder 77 to move so as to adjust the tension of the glass fiber yarn. After the second layer of winding is completed, the half gear 63 is controlled to rotate counterclockwise so that the glass fiber yarn is wound relative to the angle of the second layer.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A glass fiber tank for sewage treatment, characterized in that: The fiberglass tank is made of a composite material of fiberglass and resin, and the fiberglass layer is wound on a mold (3) by a winding method. The structure of the fiberglass tank includes an inner cavity (2) and an outer shell (1). The inner cavity (2) is used to store sewage. The outer shell (1) is made of multiple layers of composite material of fiberglass and resin by a winding method. The fiber directions of each layer of fiberglass of the outer shell (1) are at different angles to enhance its compressive strength and corrosion resistance.

2. A glass fiber tank for sewage treatment according to claim 1, characterized in that: The glass fiber layer of the shell (1) has a thickness of 2-6 mm, the weight of the resin accounts for 10%-30% of the total weight of the glass fiber composite material, and the resin is one of epoxy resin, vinyl ester resin or unsaturated polyester resin.

3. A glass fiber tank for sewage treatment according to claim 2, characterized in that: The shell (1) comprises at least three layers of glass fiber composite material, wherein the outer layer is a protective layer, which is a composite material of resin and glass fiber, the inner layer is a load-bearing layer, the glass fiber yarn winding angle of the load-bearing layer is 0° or 90°, and the glass fiber yarn winding angle of the middle layer is ±45.

4. A glass fiber tank for sewage treatment according to claim 3, characterized in that: The surface of the inner cavity (2) is coated with an inner lining layer (21), the surface of the inner lining layer (21) is coated with a super-hydrophobic coating (22), and a reinforcing belt (23) is wound along the transverse direction of the glass fiber tank, and the material of the reinforcing belt (23) is high-density glass fiber cloth.

5. A glass fiber tank for sewage treatment according to claim 4, characterized in that: The outer surface of the reinforcing belt (23) is provided with an outer surface layer (24), the material of the outer surface layer (24) is one of polyester resin or fluororesin, and the outer surface of the outer surface layer (24) is coated with a protective coating (25), the material of the protective coating (25) is one of polyurethane coating or acrylic coating.

6. A process for preparing the glass fiber tank for sewage treatment according to claim 5, characterized in that: The steps include: S1. Preparation of mold (3): The mold (3) is made of metal material with a smooth surface. The surface of the mold (3) is clean and free of oil, dust and impurities to avoid affecting the bonding of glass fiber and resin. S2, mold release agent coating: a layer of mold release agent is applied on the surface of the mold (3) to ensure that the fiberglass tank can be smoothly demoulded after molding; S3. Preparation of glass fiber: Select glass fiber yarn, choose the thickness and density of glass fiber according to the strength requirements of the tank body, and prepare glass fiber rolls of corresponding length according to the size and structural requirements of the tank body; S4, resin preparation: according to the requirements of the resin curing agent, the resin and curing agent are prepared in proportion; S5, wrapping molding process: according to the load-bearing requirements of the tank body, the wrapping angle of the glass fiber and the fiber direction of each layer are designed. Usually, the wrapping angle of the first layer is 0° or 90°. Then, the glass fibers in different directions are stacked layer by layer through the angle adjustment mechanism (5) to increase the strength of the tank body. In the wrapping process, the glass fiber yarn is wrapped around the outer surface of the mold (3) through the winding mechanism (4), and impregnated with resin through the impregnation mechanism (7) to make it fully combined with the resin; S6. Curing process: The curing of the fiberglass tank is completed by heating curing, the curing temperature is 80-120°C, and the curing time ranges from 2 to 6 hours; S7, demoulding and finishing: After the curing is completed, wait for the fiberglass tank to cool to room temperature, gently demould, polish and coat the inner and outer surfaces of the tank after demoulding to enhance the weather resistance, corrosion resistance and appearance quality of the tank; S8. Quality inspection and testing: Check whether the surface of the tank is flat and smooth, without cracks and bubble defects, and conduct physical performance tests on compression, tension and bending resistance. For tanks used for sewage treatment, corrosion resistance tests are also required to confirm that they can store sewage for a long time.

7. The process for preparing a glass fiber tank for sewage treatment according to claim 6, characterized in that: The winding mechanism (4) in S5 comprises a support frame (41), the mold (3) is rotatably connected to the surface of the support frame (41) via a roller shaft, a rotating motor (42) is fixedly connected to the upper surface of the support frame (41), the outer surface of the output shaft of the rotating motor (42) is fixedly connected to the roller shaft of the mold (3) via a coupling, and a yarn roller (43) is mounted on one side of the angle adjustment mechanism (5) via another support frame (41), and the glass fiber yarn is wound on the outer surface of the yarn roller (43).

8. The process for preparing a glass fiber tank for sewage treatment according to claim 7, characterized in that: The angle adjustment mechanism (5) described in S5 includes a workbench (51) arranged between the two support frames (41), the upper surface of the workbench (51) is rotatably connected to a reciprocating screw (52) through a rotating base, the outer surface of the reciprocating screw (52) is installed with an adjustment plate (53) through a connecting sleeve, and the connecting sleeve is slidably engaged with the outer surface of the reciprocating screw (52), the upper surface of the workbench (51) is fixedly connected to a reduction motor (54), the outer surface of the output shaft of the reduction motor (54) is fixedly connected to the outer surface of the reciprocating screw (52) through a coupling, the upper surface of the workbench (51) is fixedly connected to symmetrically distributed guide slides (55) through a mounting base, and the outer surface of the guide slides (55) is fixedly connected to the lower surface of the adjustment plate (53) through a sliding block that is slidably sleeved.

9. The process for preparing a glass fiber tank for sewage treatment according to claim 8, characterized in that: The angle adjustment mechanism (5) further comprises a connecting shaft (56) rotatably connected to the upper surface of one end of the adjustment plate (53); a tensioning housing (57) with a round tube is fixedly connected to the upper surface of the connecting shaft (56); a movable cavity (58) is provided inside the adjustment plate (53); an adjusting screw (59) is rotatably connected to the inner wall of the movable cavity (58) via a bearing; an adjusting sleeve (60) is threadedly sleeved on the outer surface of the adjusting screw (59); a movable shaft (61) is rotatably connected to the inner bottom wall of the movable cavity (58); a driving plate (62) is fixedly sleeved on the outer surface of the upper end of the movable shaft (61); and the upper surface of the driving plate (62) is connected to the tensioning housing (57). The lower surface of one end of the movable shaft (61) is hinged, a half gear (63) is fixedly sleeved on the middle outer surface of the movable shaft (61), an adjusting tooth (64) is fixedly connected to the one side surface of the adjusting sleeve (60), and the adjusting tooth (64) is meshed with the half gear (63), a limiting groove (65) is penetrated through the inner bottom wall of the movable cavity (58), the upper surface of the movable shaft (61) is fixedly connected to a limiting block (66), and the lower surface of the limiting block (66) is slidably connected to the inner bottom wall of the movable cavity (58), the outer surface of the adjusting plate (53) is fixedly connected to a driving motor (67), and the outer surface of the output shaft of the driving motor (67) is fixedly connected to the outer surface of the adjusting screw (59).

10. The process for preparing a glass fiber tank for sewage treatment according to claim 9, characterized in that: The impregnation mechanism (7) described in S5 includes a dipping tank body (71) fixedly connected to the inner surface of the tensioning shell (57); the inner top surface of the tensioning shell (57) is fixedly connected to a downward pressure cylinder (72) through a mounting block; the piston rod surface of the downward pressure cylinder (72) is fixedly connected to a door frame (73); the inner surface of the door frame (73) is rotatably connected to a plurality of guide rollers (74) with smooth surfaces and inconsistent heights; the inner bottom surface of the tensioning shell (57) is fixedly connected to a receiving tank body (75) with an inclined surface through a connecting block; the inner surface of the circular tube of the tensioning shell (57) is slidably connected to a tensioning plate (76) with a tensioning guide wheel; the outer surface of the circular tube is fixedly connected to a pushing cylinder (77); the outer surface of the piston rod of the pushing cylinder (77) is fixedly connected to a side surface of the tensioning plate (76).

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