Film type liquid cargo containment system corner box epoxy resin coating method

Abstract

The invention discloses a film type liquid cargo containment system corner box epoxy resin coating method, an epoxy resin manual coating device is used for carrying out manual coating operation on a corner box, a roller assembly is additionally arranged at the front end of the epoxy resin manual coating device, the labor intensity of operators is effectively relieved, meanwhile, the coating angle is convenient to adjust, and the coating efficiency is improved. The adhesive tape at the corner of the corner box is ensured to be formed, the adhesive tape is prevented from being damaged, and the coating uniformity is improved; the pneumatic driving technology is adopted, the device can adapt to large-flow and high-viscosity epoxy resin materials, and the operation convenience is improved; meanwhile, by designing the large-capacity storage tank body, frequent starting of an assembly line is reduced, the production cost is reduced, and due to the fact that the storage tank body is made of aluminum alloy, the weight of the device can be effectively reduced, the transportation risk can be reduced, and field operation is facilitated; in addition, a heating unit and reversible temperature measuring paper are arranged, so that the viscosity of the material can be quickly reduced, the service life is prolonged, and the coating quality is ensured.

Description

Technical Field

[0001] The invention belongs to the field of LNG liquid cargo containment system construction, and in particular relates to a method for coating epoxy resin on a corner box of a film-type liquid cargo containment system. Background Art

[0002] LNG liquid cargo containment systems, especially membrane-type liquid cargo containment systems, have extremely high requirements for the flatness of liquid cargo tanks. The liquid cargo containment system is mainly composed of primary and secondary insulation boxes and primary and secondary invar steel, which can isolate liquid natural gas to prevent it from absorbing heat from outside the cargo hold, while transmitting the pressure of liquid natural gas to the cargo hold and ensuring that liquid natural gas will not leak. The transmission of liquid natural gas pressure is mainly achieved through epoxy resin strips coated on the secondary insulation box according to the designed trajectory and type. At present, large-space liquid cargo containment systems such as LNG carriers often use epoxy resin coating lines to complete the coating of epoxy resin strips. However, the equipment is large in size and is generally fixed on the third full-layer during the construction phase. This equipment often has the following problems:

[0003] 1. The equipment adopts automation means and has high production efficiency when coating batches of standard boxes, but it cannot show its superior performance when coating small batches of non-standard boxes, and frequent start and stop greatly reduce the life of the sealing components in the glue supply system;

[0004] 2. When producing in special areas such as the lateral process holes and liquid domes, the liquid cargo containment system is in the final stage and the equipment has often been transported out of the cabin. The coating of epoxy resin requires long-distance transportation, which not only reduces the response speed, but also the temperature and humidity of the epoxy resin strips are greatly affected by external environmental factors during transportation, posing a quality risk.

[0005] After searching, the Chinese invention document with the existing announcement number CN107051837B discloses an easy-to-use DC pneumatic glue gun, "including a shell and a hose sleeve for installing a hose, the rear end of the hose sleeve is sealed and fixed to the front end of the shell, and the characteristic is that an air pump, an air pump switch, a pressure relief valve and a DC power supply are fixedly arranged in the shell, the air pump switch is electrically connected to the DC power supply and the air pump respectively, the air pump, the pressure relief valve and the hose sleeve are all connected through the air pipe, and a button is hinged on the shell, and the button controls the pressure relief valve and the air pump switch at the same time; the advantage is that the pneumatic glue gun is small and light, can be carried with, and the use distance is not limited; and the button controls the pressure relief valve and the air pump switch at the same time." Although it is easy to use, the glue processed by the above glue gun has a low viscosity. In comparison, the coating material involved in this application is a high-viscosity epoxy resin, and the maximum viscosity of the epoxy resin exceeds 1800000mPa.s. However, due to the small capacity of conventional glue guns on the market, they cannot meet the needs of coating the entire epoxy resin strip, resulting in low coating efficiency. The main differences between this application and many pneumatic glue guns in the prior art are as follows:

[0006] 1. Differences in application areas: In order to evenly transfer the force generated by the sloshing of liquefied natural gas during the transportation of LNG ships to the hull, epoxy resin mixed materials are required in the LNG liquid cargo containment system. This material has extremely high viscosity at room temperature, and its viscosity is significantly reduced when heated. It can be solidified after a period of time at room temperature, and has a high hardness. Therefore, this application specially designs a heating function to improve the fluidity during coating. At the same time, this application also has a temperature display to achieve intuitive observation and control of the heating temperature, which can effectively avoid the risk of changes in the performance of the mixed material due to heating to too high a temperature;

[0007] 2. The particularity of the application environment: During the construction of the LNG liquid cargo containment system, there is a requirement for coating the entire resin strip, and the epoxy resin strip has a specific cross-sectional area requirement. According to the C3 type strip technology, the volume of a single resin strip is about 500 ml. To meet this requirement, this application adopts a pneumatic form and a detachable method to simplify the structure of the device, save costs, and reduce the volume of the entire device, making it more suitable for large-capacity, high-viscosity epoxy resin coating operations. Most of the glue guns on the market are currently used for small-capacity, low-viscosity applications. The purpose of this application is to fill the gap in this niche application field.

[0008] Through these innovative designs, the present application not only improves the coating efficiency of the epoxy resin strips, but also ensures the fluidity of the material during the coating process and the quality of the final curing, meeting the specific requirements for epoxy resin coating during the construction of the LNG liquid cargo containment system. Summary of the invention

[0009] In order to solve the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a method for coating epoxy resin for the corner boxes of a film-type liquid cargo containment system, which improves the coating efficiency of the epoxy resin strips and realizes the efficient manual coating of the epoxy resin strips in the final stage of the liquid cargo containment system, while reducing the production cost and transportation risk, and ensuring the quality and safety of the coating operation.

[0010] In order to achieve the above-mentioned purpose and other related purposes, the present invention adopts the following technical solutions:

[0011] The present invention provides a method for coating epoxy resin on a corner box of a film-type liquid cargo containment system, and a manual epoxy resin coating device is used to manually coat the corner box;

[0012] The manual epoxy resin coating device comprises a device body, a storage tank body, a coating nozzle and a roller assembly; the roller assembly comprises two auxiliary wheels connected by a connecting shaft, and a clamp is provided on the connecting shaft, and the roller assembly is fixed to the front end of the manual epoxy resin coating device through the clamp sleeve; the storage tank body is detachably mounted on the device body, the storage tank body is a hollow tube with a cavity, the cavity is used to fill the epoxy resin mixed material, and the rear end of the storage tank body is provided with a feeding port; the coating nozzle comprises a glue outlet and a connecting seat, the front end of the glue outlet is provided with a U-shaped opening, and the coating nozzle is detachably mounted on the front end of the storage tank body through the connecting seat;

[0013] The device body includes a support unit, a drive unit, a temperature control unit and an external pipeline; the external pipeline includes a compressed air pipe and an electric wire for providing compressed air and power supply; the support unit is used to provide fixed support for the storage tank body, including a handle for providing a gripping point; the drive unit includes a drive chamber, a drive switch and a drive piston, the drive piston is separately arranged at the front end of the drive chamber, and the drive piston is installed in the storage tank body through the feed port, the drive chamber is controlled by the drive switch to start and compress the air, thereby pushing the drive piston to move in the storage tank body The storage tank body moves forward along the central axis of the storage tank body; the temperature control unit includes a manual switch, a heating unit and a reversible temperature measuring paper; the manual switch is arranged on the side of the driving chamber, and is used to control the power supply and power off of the external pipeline; the heating unit is adhered and fixed to the inner wall of the supporting unit, and is used to cover the outer wall of the storage tank body and heat it; the heating unit includes a heating pad and a temperature control switch, and the temperature control switch is used to control the heating of the heating pad, and the reversible temperature measuring paper is arranged on the outer wall of the coating nozzle, and the reversible temperature measuring paper is provided with a temperature display bar for monitoring the heating temperature;

[0014] The coating method comprises the following steps:

[0015] S1. Install the coating nozzle at the front end of the storage tank;

[0016] S2, filling the storage tank with epoxy resin mixed material through the feeding port;

[0017] S3, using the driving piston to block the feeding port of the storage tank, then installing the storage tank on the device body, and adjusting the U-shaped opening direction of the coating nozzle to be parallel to the central axis direction of the handle;

[0018] S4. Carry the device to the construction site, turn on the power, heat the epoxy resin mixed material in the storage tank through the heating unit, and observe the temperature through the temperature value of the reverse temperature measuring paper. When the temperature display reaches the ideal temperature, stop heating;

[0019] S5. Install a roller assembly at the front end of the manual epoxy resin coating device to complete the installation of the device;

[0020] S6. Draw coating lines at the locations where epoxy resin needs to be coated on the corner boxes;

[0021] S7, place the manual epoxy resin coating device, make the roller assembly against the upper surface of the corner box, align the glue outlet with the position where coating is required, and adjust the U-shaped opening angle of the coating nozzle so that the center line of the U-shaped opening of the coating nozzle coincides with the coating line;

[0022] S8. Press the drive switch to perform manual coating operation. When the epoxy resin mixture in the storage tank is used up, remove the storage tank from the device body, unscrew the coating nozzle, take out the drive piston, and repeat steps S1-S8 until the coating lines of the corner boxes are coated with the epoxy resin mixture, completing the manual coating operation.

[0023] As a preferred technical solution, the roller assembly includes two auxiliary wheels, which are movably connected by a connecting shaft so that the two auxiliary wheels can rotate synchronously along the axis of the shaft. A clamp is provided above the center position of the connecting shaft, and the clamp has an inner diameter matching the front end of the manual epoxy resin coating device, so that the roller assembly can be mounted and fixed on the front end of the manual epoxy resin coating device.

[0024] As a preferred technical solution, the support unit includes a front end cover, a lower support and a handle, and the handle includes a front handle and a rear handle; the front handle is welded and fixed to the lower part of the lower support near the front end, and the drive chamber is welded and fixed to the rear end of the lower support; the drive switch and the rear handle are welded and fixed to the lower part of the drive chamber from front to back in sequence, and the center lines of the drive switch, the front handle and the rear handle are all located on the same plane, the rear handle is a hollow structure, and the external pipeline is connected to the drive chamber through the rear handle.

[0025] As a preferred technical solution, the front end cover is welded to the front end of the lower support, and a middle hole is opened in the middle of the front end cover; the U-shaped opening is connected to the interior of the storage tank body through the middle hole on the front end cover; the storage tank body can be detachably installed in the lower support, and the two ends of the storage tank body are respectively abutted and fixed between the front end cover and the drive chamber.

[0026] As a preferred technical solution, the front end of the driving piston is a conical platform, the rear of the driving piston is a cylinder, the outer diameter of the cylinder is slightly smaller than the inner wall of the storage tank, and a first groove is provided on the cylinder, and a first sealing assembly is provided on the first groove.

[0027] As a preferred technical solution, a second groove is provided at the front end of the storage tank body, a second sealing assembly is provided on the second groove, and an external thread is provided at the rear of the second groove; the connecting seat of the coating nozzle is provided with an internal thread, and the internal thread matches the external thread at the rear of the second groove, and the coating nozzle is detachably mounted on the front end of the storage tank body through threads.

[0028] As a preferred technical solution, in step S2, an epoxy resin coating machine is used to fill the storage tank: the feed port at the rear end of the storage tank is placed at the mixing discharge port of the epoxy resin coating machine, the epoxy resin coating machine is started, and the discharge time is set according to the capacity of the storage tank. After the storage tank is filled with the epoxy resin mixed material, the epoxy resin coating machine is turned off, and the storage tank filled with the epoxy resin mixed material is removed.

[0029] As a preferred technical solution, a spring is further provided inside the driving chamber;

[0030] In the step S3 of installing the storage tank body on the device body, first insert the rear end of the storage tank body into the drive chamber, apply force to compress the spring, then place the front end of the storage tank body downward into the lower support, release the force to reset the spring, so that the front end face of the connecting seat of the coating nozzle is firmly pressed against the rear end face of the front end cover.

[0031] As a preferred technical solution, the support unit further includes a locking mechanism, one end of which is hinged to one side of the upper end surface of the lower support, and the other end of which is locked and fixed to the other side of the upper end surface of the lower support by a bolt assembly, and the inner side surface of the locking mechanism has a shape matching the outer wall of the storage tank body;

[0032] In the step S3 of installing the storage tank body on the device body, the storage tank body is placed in the lower support, and then the storage tank body is locked and fixed in the lower support by a locking mechanism.

[0033] As a further preferred technical solution, in step S8, after completing the manual coating operation, if there is still residual epoxy resin mixed material in the storage tank, the storage tank is emptied in time, the storage tank is removed from the device body, the coating nozzle is removed, and the driving piston is taken out for standby use.

[0034] As described above, the present invention has the following beneficial effects:

[0035] (1) The present invention provides a method for coating epoxy resin on the corner boxes of a film-type liquid cargo containment system. By installing a roller assembly on the front end of the manual epoxy resin coating device, it can play an auxiliary support role, and there is no need to hold it all the time for control, which effectively reduces the labor load of the operator. At the same time, the fulcrum provided by the roller assembly can facilitate the adjustment of the angle between the manual epoxy resin coating device and the surface of the corner box, so as to achieve the purpose of effectively controlling the height of the coating nozzle at the gun head of the manual epoxy resin coating device. In particular, it is difficult to coat glue at the corner position of the corner box. The roller assembly can effectively ensure the formation of the epoxy resin strip. In addition, since the strip is located behind the forward direction of the auxiliary roller and the trajectory of the epoxy resin strip is basically a straight line, the epoxy resin strip will not be damaged, and the damage of the strip caused by the operator's unstable handholding can be effectively avoided, thereby ensuring the sealing of the coating on the surface of the corner box on the LNG ship and the uniformity of coating.

[0036] (2) The present invention provides a method for coating epoxy resin on the corner boxes of a film-type liquid cargo containment system. In view of the limitations of conventional manual glue guns when dealing with large-flow, high-viscosity epoxy resin mixed materials, pneumatic drive technology is adopted to make the overall components small and easy to operate, thus meeting the demand for coating high-viscosity materials in production.

[0037] (3) The present invention provides a method for coating epoxy resin on the corner boxes of a film-type liquid cargo containment system. A large-capacity storage tank is designed. By designing the storage tank size to have an inner diameter greater than 32 mm and a length greater than 400 mm, the overall internal capacity of the storage tank is greater than 1 L, which can meet the requirements for coating multiple epoxy resin strips at one time. In addition, this design effectively reduces the frequent startup of the epoxy resin coating production line, thereby reducing the high production cost caused by frequent startup.

[0038] (4) The present invention provides a method for coating epoxy resin on the corner boxes of a film-type liquid cargo containment system. The heating unit can achieve rapid heating of the epoxy resin mixed material, effectively reducing the viscosity of the material, improving the smoothness of coating, and extending the service life of the device. In addition, the device uses reversible temperature measuring paper, which makes the temperature change clear at a glance, making it convenient for operators to monitor the temperature status of the material in real time and ensure the coating quality.

[0039] (5) The epoxy resin coating method for the corner box of the film-type liquid cargo containment system of the present invention adopts an aluminum alloy material, which is light in weight and convenient for operators to carry out coating operations on site, thereby greatly reducing the uncontrollable risks that may occur during transportation after the epoxy resin strip is coated. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of the device body in the present invention.

[0041] Figure 2 It is a structural schematic diagram of the storage tank in the present invention.

[0042] Figure 3 It is a cross-sectional view of the storage tank, coating nozzle and driving piston in the present invention.

[0043] Figure 4 It is a cross-sectional view of the heating unit in the present invention.

[0044] Figure 5 It is a structural schematic diagram of the heating pad in the present invention.

[0045] Figure 6 It is a schematic diagram of the overall installation when the roller assembly is hidden in the present invention.

[0046] Figure 7 It is a structural schematic diagram of the roller assembly of the present invention when it is installed at the front end of the device.

[0047] Among them, the specific description of the accompanying drawings is as follows: 1. Device body; 11. Support unit; 111. Front cover; 112. Lower support; 113. Locking mechanism; 114. Front handle; 115. Rear handle; 12. Drive unit; 121. Drive chamber; 122. Drive switch; 123. Drive piston; 1231. First groove; 1232. First sealing assembly; 13. Temperature control unit; 131. Manual switch; 132. Heating unit; 1321. Heating pad; 1322. Temperature control switch; 1323. Sponge; 133. Reversible temperature measuring paper; 14. External pipeline; 2. Storage tank; 21. Second groove; 22. Second sealing assembly; 23. External thread; 3. Coating nozzle; 31. Glue outlet; 32. Connecting seat; 4. Roller assembly; 41. Auxiliary wheel; 42. Connecting shaft; 43. Hoop. DETAILED DESCRIPTION

[0048] In order to better understand the purpose, structure and function of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described 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.

[0049] In the description of the present invention, it should be noted that the positional relationships indicated by terms such as “longitudinal”, “lateral”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” etc. cited in this specification are based on the positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0050] Example 1

[0051] like Figure 1-Figure 7 As shown, this embodiment provides a manual epoxy resin coating device for a method of coating epoxy resin on corner boxes of a film-type liquid cargo containment system, so as to realize manual coating operations on corner boxes.

[0052] The manual epoxy resin coating device comprises a device body 1, a storage tank body 2, a coating nozzle 3 and a roller assembly 4; the coating nozzle 3 is detachably mounted on the front end of the storage tank body 2, and the storage tank body 2 is detachably mounted on the device body 1; the roller assembly 4 comprises two auxiliary wheels 41 connected by a connecting shaft 42, and a clamp 43 is provided on the connecting shaft 42, and the roller assembly 4 is fixed to the front end of the manual epoxy resin coating device through the clamp 43; specifically, the roller assembly 4 comprises two auxiliary wheels 41, and the two auxiliary wheels 41 are movably connected by a connecting shaft 42, so that the two auxiliary wheels 4 1 can rotate synchronously along the axis of the shaft, a hoop 43 is arranged above the center position of the connecting shaft 42, and the hoop 43 has an inner diameter matching the front end of the manual epoxy resin coating device, so that the roller assembly 4 can be sleeved and fixed on the front end of the manual epoxy resin coating device. In this embodiment, the roller assembly 4 is sleeved and fixed on the front end of the coating nozzle 3 through the hoop 43, which is suitable for manual gluing in a narrow position. In other embodiments, the roller assembly 4 is sleeved and fixed on the front end of the device body 1 through the hoop 43, which is suitable for occasions with a large amount of glue to be coated to provide greater supporting force.

[0053] The device body 1 includes a support unit 11, a drive unit 12, a temperature control unit 13 and an external pipeline 14. The support unit 11 is used to provide fixed support for the storage tank 2 and a grip point when applying glue. The support unit 11 includes a front cover 111, a lower support 112, a locking mechanism 113 and a handle. The handle includes a front handle 114 and a rear handle 115. The drive unit 12 includes a drive chamber 121, a drive switch 122 and a drive piston 123. The front end of the lower support 112 is welded with the front cover 111, and a middle hole is opened in the middle of the front cover 111. In this embodiment, the support unit 11 also includes a plurality of locking mechanisms 113, wherein the locking mechanisms 113 are arranged on the lower support 112, wherein one end of the locking mechanism 113 is hinged to one side of the upper end surface of the lower support 112, and the other end of the locking mechanism 113 is locked and fixed to the other side of the upper end surface of the lower support 112 by a bolt assembly, and the inner side surface of the locking mechanism 113 has a shape matching the outer wall of the storage tank body 2, and the storage tank body 2 can be further locked and fixed by the locking mechanism 113 to prevent the angle of the coating nozzle 3 from changing due to the displacement of the storage tank body 2. The front handle 114 is welded and fixed to the lower part of the lower support 112 near the front end, and the driving chamber 121 is welded and fixed to the rear end of the lower support 112; the driving switch 122 and the rear handle 115 are welded and fixed to the lower part of the driving chamber 121 from front to back, and the center lines of the driving switch 122, the front handle 114 and the rear handle 115 are all located on the same plane, and the rear handle 115 is a hollow structure. The external pipeline 14 is connected to the driving chamber 121 through the rear handle 115, and the external pipeline 14 includes a compressed air pipe and an electric wire for providing compressed air and power supply; the driving piston 123 is arranged at the front end of the driving chamber 121, and the driving piston 123 can be separated from the driving chamber 121. The front end of the driving piston 123 is a cone platform, and the rear part of the driving piston 123 is a cylinder. The outer diameter of the cylinder is slightly smaller than the inner wall of the storage tank 2, and the cylinder is provided with a first groove 1231. The first groove 1231 is provided with a first sealing assembly 1232, which is used to prevent the epoxy resin mixed material inside the storage tank 2 from leaking out and ensure the sealing of the rear part of the driving piston 123, thereby providing air compression conditions; during operation, the driving chamber 121 is controlled by the driving switch 122 to start and compress the air, thereby pushing the driving piston 123 to move forward along the central axis of the storage tank 2 in the storage tank 2. By adopting pneumatic drive, the overall component volume of the device can be reduced, which is small and light, and easy to carry and control the coating operation. The temperature control unit 13 includes a manual switch 131, a heating unit 132 and a reversible temperature measuring paper 133. The manual switch 131 is set on the side of the driving chamber 121 to control the power supply and power off of the external pipeline 14.The heating unit 132 is adhered and fixed to the inner wall of the support unit 11, and is used to cover the outer wall of the storage tank body 2 and heat it. Specifically, the heating unit 132 is distributed on the inner wall of the lower support 112 and the inner wall of the locking mechanism 113, and the outer side surface of the heating unit 132 that contacts the inner wall of the lower support 112 and the locking mechanism 113 is adhered and fixed to the lower support 112 and the locking mechanism 113 respectively, so that when the storage tank body 2 is installed in the support unit 11 and the locking mechanism 113 is buckled, the outer wall of the storage tank body 2 can be completely covered by the inner side surface of the heating unit 132; the heating unit 132 includes a heating pad 1321, a temperature control switch 1322 and a sponge 1323, and the inner and outer sides of the heating pad 1321 are provided with the sponge 1323, and the sponge 1323 is used to protect the heating pad 1321, and can also better fit the storage tank body 2 The outer wall is used to provide balanced heating, and the temperature control switch 1322 is used to control the heating of the heating pad 1321; the heating unit 132 can realize rapid heating of the epoxy resin mixed material in the storage tank body 2, reduce the viscosity of the material, improve the fluidity during coating, and extend the service life of the device; the reversible temperature measuring paper 133 is arranged on the outer wall of the coating nozzle 3, and the reversible temperature measuring paper 133 is provided with a temperature display bar. By adopting the reversible temperature measuring paper 133, the temperature change can be clearly seen at a glance. The temperature display bar on the reversible temperature measuring paper 133 can be used to observe and control the heating temperature before glue discharge in real time and intuitively, and can monitor whether the epoxy resin mixed material in the storage tank body 2 reaches the ideal temperature suitable for glue coating. In this embodiment, the ideal temperature of glue coating is set to 30°C.

[0054] The storage tank body 2 can be detachably installed in the lower support 112, and the two ends of the storage tank body 2 are respectively fixed against the front cover 111 and the drive chamber 121; the storage tank body 2 is a hollow tube with a cavity, and the cavity is used to fill the epoxy resin mixed material. In this embodiment, the storage tank body 2 is made of aluminum alloy, which is light and easy to use. The inner diameter of the storage tank body 2 is greater than 32mm, the length exceeds 400mm, and the overall capacity is greater than 1L, which can meet the requirements of coating multiple epoxy resin strips at one time; the front end of the storage tank body 2 is provided with a second groove 21, and the second sealing component 22 is provided on the second groove 21 , and the rear part of the second groove 21 is provided with an external thread 23; the coating nozzle 3 includes a glue outlet 31 and a connecting seat 32, the connecting seat 32 is provided with an internal thread, and the internal thread matches the external thread 23 at the rear part of the second groove 21, the coating nozzle 3 is detachably mounted on the front end of the storage tank body 2 through a thread, the front end of the glue outlet 31 is provided with a U-shaped opening, and the U-shaped opening is connected to the inside of the storage tank body 2 through the middle hole on the front cover 111; the rear end of the storage tank body 2 is provided with a feed port, and the driving piston 123 is installed in the storage tank body 2 through the feed port, and can move toward the front end along the central axis of the storage tank body 2. In this embodiment, a spring is also provided inside the driving chamber 121, and a forward thrust can be applied to the installed storage tank body 2 through the spring to achieve the purpose of stabilizing and fixing the storage tank body 2. During operation, first insert the rear end of the storage tank body 2 into the driving chamber 121, apply force to compress the spring, then place the front end of the storage tank body 2 downward into the lower support 112, release the applied force to reset the spring, so that the front end face of the connecting seat 32 of the coating nozzle 3 is firmly pressed against the rear end face of the front end cover 111.

[0055] Example 2

[0056] like Figure 6 and Figure 7 As shown, this embodiment provides a method for coating epoxy resin on a corner box of a film-type liquid cargo containment system using the device of embodiment 1, comprising the following steps:

[0057] S1. Tighten the coating nozzle 3 and install it on the front end of the storage tank 2.

[0058] S2. Fill the storage tank 2 with epoxy resin mixed material through the feeding port at the rear end of the storage tank 2: In this embodiment, an epoxy resin coating machine filled with epoxy resin mixed material is used to fill the storage tank 2. Specifically, the feeding port at the rear end of the storage tank 2 is placed at the mixed discharge port of the epoxy resin coating machine, the epoxy resin coating machine is started, and the discharge time is set according to the capacity of the storage tank 2. After the storage tank 2 is filled with epoxy resin mixed material, the epoxy resin coating machine is turned off, and the storage tank 2 filled with epoxy resin mixed material is removed.

[0059] S3. Use the driving piston 123 to block the feeding port of the storage tank body 2, then install the storage tank body 2 on the device body 1, adjust the U-shaped opening direction of the coating nozzle 3 to be parallel to the central axis direction of the handle, and then lock and fix the storage tank body 2 through the locking mechanism 113: Specifically, first, put the front end of the driving piston 123 into the feeding port of the storage tank body 2, and use the first groove 1231 and the first sealing component 1232 to make the driving piston 123 embedded and fixed in the feeding port of the storage tank body 2, completing the sleeve installation of the driving piston 123 in the storage tank body 2, avoiding the leakage of the epoxy resin mixed material, and at the same time reducing the contact area and duration of the epoxy resin mixed material with the air, thereby reducing the solidification rate of the epoxy resin mixed material. During operation, since the outer diameter of the front end of the driving piston 123 is slightly smaller than The inner wall of the storage tank body 2, therefore, the driving piston 123 can be moved in the storage tank body 2 toward one end of the coating nozzle 3 by compressed air; secondly, the storage tank body 2 is placed on the device body 1, and the rear end of the storage tank body 2 is inserted into the driving chamber 121, so that the driving piston 123 is aligned with the front end of the driving chamber 121, and the spring inside the driving chamber 121 is in a compressed state at this time; then, the front end of the storage tank body 2 is also placed in the lower support 112, and the spring inside the driving chamber 121 is reset at this time, so that the front part of the connecting seat 32 of the coating nozzle 3 is firmly pressed against the inside of the front end cover 111; finally, the U-shaped opening direction of the coating nozzle 3 is adjusted to be parallel to the central axis direction of the front handle 114, and the outer periphery of the storage tank body 2 is further fixed by the locking mechanism 113 to ensure a stable connection between the storage tank body 2 and the device body 1.

[0060] S4. Carry the manual epoxy resin coating device to the construction site in the liquid cargo containment system to achieve on-site coating, reducing the uncontrollable risks caused by transportation after the epoxy resin strip is coated; after turning on the power, turn the manual switch 131 to make the device run, and then control the heating pad 1321 of the heating unit 132 to start and heat the outer wall of the storage tank 2 through the temperature control switch 1322, observe the temperature value displayed on the temperature display bar on the reversible temperature measuring paper 133, and stop heating through the temperature control switch 1322 when the temperature reaches the ideal temperature of 30°C.

[0061] S5. The roller assembly 4 is sleeved on the front end of the coating nozzle 3 to complete the installation of the device.

[0062] S6. Draw coating lines at the locations where epoxy resin needs to be coated on the corner boxes.

[0063] S7. Place the manual epoxy resin coating device so that the roller assembly 4 rests against the upper surface of the corner box, align the glue outlet 31 with the position where coating is required, and adjust the U-shaped opening direction angle of the coating nozzle 3 so that the center line of the U-shaped opening of the coating nozzle 3 coincides with the coating line.

[0064] S8. Press the drive switch 122 to perform manual coating operation. When the epoxy resin mixture in the storage tank 2 is used up, remove the storage tank 2 from the device body 1, unscrew the coating nozzle 3, take out the drive piston 123, and repeat steps S1-S8 until the coating lines of the corner boxes have been coated with the epoxy resin mixture. The manual coating operation is completed and the manual switch 131 is turned off.

[0065] Since the epoxy resin mixed material is easy to solidify, it is usually filled up and all coated without the need for an automatic reset function. If there is still residual epoxy resin mixed material in the storage tank 2 after the manual coating operation is completed, the storage tank 2 needs to be cleaned in time. Specifically, turn on the drive switch 122 and pneumatically push the drive piston 123 to move toward the coating nozzle 3 end of the storage tank 2 until the epoxy resin mixed material in the storage tank 2 is exhausted. When it is exhausted, the drive piston 123 is automatically located at the front of the storage tank 2. After the coating nozzle 3 is directly disassembled, the drive piston 123 is removed for standby use. Since the first groove 1231 and the first sealing assembly 1232 of the drive piston 123 are in contact with the inner wall of the storage tank 2, the inner wall of the storage tank 2 can be automatically cleaned when the drive piston 123 is pneumatically pushed to move.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A method for coating epoxy resin on the corner box of a film-type liquid cargo containment system, characterized in that: Manual coating of the corner boxes is performed using a manual epoxy resin coating device. The manual epoxy resin coating device comprises a device body (1), a storage tank body (2), a coating nozzle (3) and a roller assembly (4); the roller assembly (4) comprises two auxiliary wheels (41) connected by a connecting shaft (42), and a clamp (43) is provided on the connecting shaft (42), and the roller assembly (4) is fixed to the front end of the manual epoxy resin coating device by sleeve-mounting the clamp (43); the storage tank body (2) is detachably mounted on the device body (1), the storage tank body (2) is a hollow tube with a cavity, and the cavity is used to fill the epoxy resin mixed material, and the rear end of the storage tank body (2) is provided with a feeding port; the coating nozzle (3) comprises a glue outlet (31) and a connecting seat (32), the front end of the glue outlet (31) is provided with a U-shaped opening, and the coating nozzle (3) is detachably mounted on the front end of the storage tank body (2) through the connecting seat (32); The device body (1) comprises a support unit (11), a drive unit (12), a temperature control unit (13) and an external pipeline (14); the external pipeline (14) comprises a compressed air pipe and an electric wire for providing compressed air and power supply; the support unit (11) is used to provide fixed support for the storage tank body (2), and comprises a handle for providing a grip point; the drive unit (12) comprises a drive chamber (121), a drive switch (122) and a drive piston (123); the drive piston (123) is separately arranged at the front end of the drive chamber (121), and the drive piston (123) is installed in the storage tank body (2) through the feed port; the drive chamber (121) is controlled by the drive switch (122) to start and compress air, thereby pushing the drive piston (123) in the storage tank body (2) The storage tank (2) is moved forward along the central axis of the storage tank body (2); the temperature control unit (13) comprises a manual switch (131), a heating unit (132) and a reversible temperature measuring paper (133); the manual switch (131) is arranged on the side of the driving chamber (121) and is used to control the power supply and power off of the external pipeline (14); the heating unit (132) is adhered and fixed to the inner wall of the support unit (11) and is used to cover the outer wall of the storage tank body (2) and heat it; the heating unit (132) comprises a heating pad (1321) and a temperature control switch (1322), the temperature control switch (1322) is used to control the heating of the heating pad (1321), the reversible temperature measuring paper (133) is arranged on the outer wall of the coating nozzle (3), and the reversible temperature measuring paper (133) is provided with a temperature display bar for monitoring the heating temperature; The coating method comprises the following steps: S1. Installing the coating nozzle (3) at the front end of the storage tank (2); S2, filling the storage tank (2) with epoxy resin mixed material through the material delivery port; S3, using the driving piston (123) to block the material delivery port of the storage tank body (2), then installing the storage tank body (2) on the device body (1), and adjusting the U-shaped opening direction of the coating nozzle (3) to be parallel to the central axis direction of the handle; S4, carry the device to the construction site, turn on the power, heat the epoxy resin mixed material in the storage tank (2) through the heating unit (132), and observe the temperature through the temperature value of the reverse temperature measuring paper. When the temperature reaches the ideal temperature, stop heating; S5. Installing a roller assembly (4) at the front end of the manual epoxy resin coating device to complete the installation of the device; S6. Draw coating lines at the locations where epoxy resin needs to be coated on the corner boxes; S7, placing the manual epoxy resin coating device, making the roller assembly (4) against the upper surface of the corner box, aligning the glue outlet (31) with the position to be coated, and adjusting the U-shaped opening angle of the coating nozzle (3) so that the center line of the U-shaped opening of the coating nozzle (3) coincides with the coating line; S8, press the drive switch (122) to perform manual coating operation. When the epoxy resin mixed material in the storage tank (2) is used up, remove the storage tank (2) from the device body (1), unscrew the coating nozzle (3), remove the drive piston (123), and repeat steps S1-S8 until the coating line of the corner box is coated with the epoxy resin mixed material, completing the manual coating operation.

2. The method for coating epoxy resin on the corner box of a film-type liquid cargo containment system according to claim 1, characterized in that: The roller assembly (4) comprises two auxiliary wheels (41), and the two auxiliary wheels (41) are movably connected via a connecting shaft (42), so that the two auxiliary wheels (41) can rotate synchronously along the axis of the shaft, and a clamp (43) is arranged above the center position of the connecting shaft (42), and the clamp (43) has an inner diameter matching the front end of the manual epoxy resin coating device, so that the roller assembly (4) can be sleeved and fixed on the front end of the manual epoxy resin coating device.

3. The method for coating epoxy resin on the corner box of a film-type liquid cargo containment system according to claim 2, characterized in that: The support unit (11) comprises a front end cover (111), a lower support (112) and a handle, wherein the handle comprises a front handle (114) and a rear handle (115); the front handle (114) is welded and fixed below the lower support (112) near the front end, and the drive chamber (121) is welded and fixed at the rear end of the lower support (112); the drive switch (122) and the rear handle (115) are welded and fixed below the drive chamber (121) from front to back, wherein the center lines of the drive switch (122), the front handle (114) and the rear handle (115) are all located on the same plane, the rear handle (115) is a hollow structure, and the external pipeline (14) is connected to the drive chamber (121) through the rear handle (115).

4. The method for coating epoxy resin on the corner box of a film-type liquid cargo containment system according to claim 3, characterized in that: The front end of the lower support (112) is welded with the front end cover (111), and a middle hole is opened in the middle of the front end cover (111); the U-shaped opening is connected to the interior of the storage tank body (2) through the middle hole on the front end cover (111); the storage tank body (2) is detachably installed in the lower support (112), and the two ends of the storage tank body (2) are respectively abutted and fixed between the front end cover (111) and the drive chamber (121).

5. The method for coating epoxy resin on the corner box of a film-type liquid cargo containment system according to claim 1, characterized in that: The front end of the driving piston (123) is a conical platform, and the rear part of the driving piston (123) is a cylinder. The outer diameter of the cylinder is slightly smaller than the inner wall of the storage tank (2), and a first groove (1231) is provided on the cylinder. The first groove (1231) is provided with a first sealing assembly (1232).

6. The method for coating epoxy resin on the corner box of a film-type liquid cargo containment system according to claim 1, characterized in that: The front end of the storage tank body (2) is provided with a second groove (21), the second sealing assembly (22) is provided on the second groove (21), and the rear portion of the second groove (21) is provided with an external thread (23); the connecting seat (32) of the coating nozzle (3) is provided with an internal thread, the internal thread matches the external thread (23) at the rear portion of the second groove (21), and the coating nozzle (3) is detachably mounted on the front end of the storage tank body (2) via the thread.

7. The method for coating epoxy resin on the corner box of a film-type liquid cargo containment system according to claim 1, characterized in that: In step S2, the storage tank (2) is filled with an epoxy resin coating machine: the feed port at the rear end of the storage tank (2) is placed at the mixing discharge port of the epoxy resin coating machine, the epoxy resin coating machine is started, and the discharge time is set according to the capacity of the storage tank (2). After the storage tank (2) is filled with the epoxy resin mixed material, the epoxy resin coating machine is turned off, and the storage tank (2) filled with the epoxy resin mixed material is removed.

8. The method for coating epoxy resin on the corner box of a film-type liquid cargo containment system according to claim 3, characterized in that: A spring is also arranged inside the driving chamber (121); In the step S3 of installing the storage tank body (2) on the device body (1), the rear end of the storage tank body (2) is first inserted into the drive chamber (121), and force is applied to compress the spring. Then, the front end of the storage tank body (2) is placed downward into the lower support (112), and the force is released to reset the spring, so that the front end face of the connecting seat (32) of the coating nozzle (3) is firmly pressed against the rear end face of the front cover (111).

9. The method for coating epoxy resin on the corner box of a film-type liquid cargo containment system according to claim 3, characterized in that: The support unit (11) further comprises a locking mechanism (113), one end of the locking mechanism (113) is hinged to one side of the upper end surface of the lower support (112), the other end of the locking mechanism (113) is locked and fixed to the other side of the upper end surface of the lower support (112) by a bolt assembly, and the inner side surface of the locking mechanism (113) has a shape matching the outer wall of the storage tank body (2); In the step S3 of installing the storage tank body (2) on the device body (1), the storage tank body (2) is placed in the lower support (112), and then the storage tank body (2) is locked and fixed in the lower support (112) by the locking mechanism (113).

10. A method for coating epoxy resin on corner boxes of a film-type liquid cargo containment system according to any one of claims 1 to 9, characterized in that: In step S8, after the manual coating operation is completed, if there is still residual epoxy resin mixed material in the storage tank (2), the storage tank (2) is emptied in time, the storage tank (2) is removed from the device body (1), the coating nozzle (3) is removed, and the driving piston (123) is taken out for standby use.

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