Ethyl acetate supply system

Abstract

The utility model relates to an ethyl acetate supply system which comprises a material supply source, a plurality of raw material tanks, a relay tank and a glue mixing barrel, a feeding header pipe and feeding branch pipes are arranged between the material supply source and the raw material tanks, the number of the feeding branch pipes is equal to that of the raw material tanks, the feeding header pipe is communicated with all the feeding branch pipes, the feeding header pipe is connected with the material supply source, and the relay tank is connected with the glue mixing barrel. Each feeding branch pipe is connected with a feeding port of one raw material groove, a discharging pump is arranged on the feeding main pipe, feeding control valves are arranged on the feeding branch pipes, conveying pipes and discharging pumps are arranged between the raw material grooves and the relay grooves, each raw material groove is connected with all the relay grooves, and each relay groove is connected with all the raw material grooves. A discharge pipe is arranged between the relay tank and the glue mixing barrel; and a discharge control valve is arranged on the discharge pipe. According to the utility model, the ethyl acetate is fed into the raw material tank for storage through the material supply source, so that the use of gallon barrels is reduced, the generation of hazardous wastes is reduced, and the environmental protection property is strong; the material turnover frequency is reduced, so that the labor force is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to an ethyl acetate supply system. Background Technology

[0002] Ethyl acetate, also known as ethyl acetate, is an organic compound capable of undergoing common ester reactions such as alcoholysis, ammonolysis, transesterification, and reduction. Ethyl acetate is one of the most widely used fatty acid esters, a fast-drying solvent with excellent dissolving power, making it an excellent industrial solvent and also a suitable eluent for column chromatography. It can be used in nitrocellulose, ethylcellulose, chlorinated rubber and ethylene resins, cellulose acetate esters, cellulose butyl acetate and synthetic rubber, and also in liquid nitrocellulose inks for copiers. It can be used as a solvent for adhesives and a thinner for spray paints. Ethyl acetate is used in the manufacturing process of polarizing films, and its storage and transportation are challenges faced by polarizing film manufacturers. Currently, storage and transportation methods are relatively traditional, using gallon drums or tonnes for filling and truck transportation. If polarizing film manufacturers use large quantities over long distances, this leads to significant transportation costs and requires large storage spaces. Furthermore, ethyl acetate is highly volatile and poses a considerable risk. This presents challenges such as high labor intensity, storage site safety, and high production costs for enterprises.

[0003] Therefore, there is a need for an ethyl acetate supply system that can effectively solve the problems of storage space and improve security, while greatly alleviating the pressure on the transportation process, and with a high degree of system automation, reducing labor and costs. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, this utility model provides an ethyl acetate supply system.

[0005] The technical solution of this utility model is as follows:

[0006] An ethyl acetate supply system includes a feed source, raw material tanks, relay tanks, and a mixing tank. There are multiple raw material tanks. A main feed pipe and branch feed pipes are provided between the feed source and each raw material tank. The number of branch feed pipes is equal to the number of raw material tanks. The main feed pipe is connected to all the branch feed pipes and is connected to the feed source. Each branch feed pipe is connected to the inlet of one of the raw material tanks. A discharge pump is provided on the main feed pipe, and a feed control valve is provided on each branch feed pipe. There are multiple relay tanks. A conveying pipe and a discharge pump are provided between each raw material tank and each relay tank. Each raw material tank is connected to all the relay tanks, and each relay tank is connected to all the raw material tanks. A discharge pipe is provided between each relay tank and the mixing tank, and a discharge control valve is provided on the discharge pipe.

[0007] As a further improvement of this utility model, the conveying pipe includes a main conveying pipe, a first conveying branch pipe, and a second conveying branch pipe. The number of first conveying branch pipes is equal to the number of raw material tanks, and the number of second conveying branch pipes is equal to the number of relay tanks. The main conveying pipe is connected to all the first conveying branch pipes and all the second conveying branch pipes. Each first conveying branch pipe is connected to the outlet of one of the raw material tanks, and each second conveying branch pipe is connected to the inlet of one of the relay tanks.

[0008] As a further improvement of this utility model, a first material conveying control valve is provided on the first material conveying branch pipe, a second material conveying control valve is provided on the second material conveying branch pipe, and the number of discharge pumps is equal to that of the first material conveying branch pipes, with each first material conveying branch pipe having one discharge pump.

[0009] As a further improvement of this utility model, the ethyl acetate supply system also includes a control terminal, which is electrically connected to the unloading pump, the discharge pump, the feed control valve, the discharge control valve, the first conveying control valve, and the second conveying control valve.

[0010] As a further improvement of this utility model, a filter is provided on the main conveying pipe.

[0011] As a further improvement of this utility model, a weather balance pipe is provided between the raw material tank and the relay tank, and a flame arrestor valve is provided on the weather balance pipe.

[0012] As a further improvement of this utility model, the outside of the raw material tank is provided with a heat insulation layer, and a cooling pipe is provided inside the heat insulation layer. The inlet and outlet of the cooling pipe are respectively provided with cooling valves.

[0013] As a further improvement of this utility model, the raw material tank is equipped with a liquid level sensor, a liquid level gauge, a temperature sensor and a pressure sensor.

[0014] As a further improvement of this utility model, the relay tank is connected to a weighing sensor and a liquid level switch, and the liquid level switch controls the discharge pump.

[0015] As a further improvement of this utility model, the raw material tank is connected to a nitrogen inlet pipe and a nitrogen outlet pipe. The nitrogen inlet pipe is equipped with a nitrogen emergency shut-off valve, the nitrogen outlet pipe is equipped with a nitrogen unloading valve and a flame arrestor valve, and the raw material tank is equipped with a safety valve.

[0016] According to the above-described solution, the beneficial effects of this utility model are as follows:

[0017] 1. Ethyl acetate is fed into the raw material tank through the supply source for storage, which reduces the use of gallon barrels and the generation of hazardous waste, making it highly environmentally friendly;

[0018] 2. Ethyl acetate stored in the raw material tank is sent to the mixing tank by a discharge pump, which reduces the frequency of material turnover and thus reduces labor.

[0019] 3. The overall structure is simple and the equipment occupies little space. It can be remotely monitored and operated in real time through the control terminal, which reduces manpower, lowers costs, and improves the mixing efficiency of adhesive for polarizing plate bonding. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] In the diagram: 1. Material supply source; 2. Raw material tank; 21. Insulation layer; 22. Cooling pipe; 23. Cooling valve; 24. Liquid level sensor; 25. Liquid level gauge; 26. Temperature sensor; 27. Pressure sensor; 3. Relay tank; 31. Weighing sensor; 32. Liquid level switch; 4. Mixing tank; 51. Main feed pipe; 52. Branch feed pipe; 53. Discharge pump; 54. Feed control valve; 61. Discharge pump; 62. Main conveying pipe; 63. First conveying branch pipe; 64. Second conveying branch pipe; 65. First conveying control valve; 66. Second conveying control valve; 67. Filter; 71. Discharge pipe; 72. Discharge control valve; 81. Gas balance pipe; 82. Flame arrestor valve; 83. Nitrogen inlet pipe; 84. Nitrogen outlet pipe; 85. Nitrogen emergency shut-off valve; 86. Nitrogen unloading valve; 87. Safety valve. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] See Figure 1 This utility model provides an ethyl acetate supply system, including a supply source 1, a raw material tank 2, a relay tank 3, and a mixing tank 4. The supply source 1 can be a tank truck. Multiple raw material tanks 2 are provided to meet the continuous 24-hour production needs of the production line. When the ethyl acetate in one raw material tank 2 is depleted, the system can quickly switch to another raw material tank 2 to supply ethyl acetate, ensuring continuous production and effectively improving production efficiency. A main feed pipe 51 and branch feed pipes 52 are provided between the supply source 1 and the raw material tanks 2. The number of pipes 52 is equal to the number of raw material tanks 2. The main feed pipe 51 is connected to all the feed branch pipes 52. The main feed pipe 51 is connected to the feed source 1. Each feed branch pipe 52 is connected to the inlet of a raw material tank 2. The main feed pipe 51 is equipped with a discharge pump 53, and the feed branch pipes 52 are equipped with feed control valves 54. Opening the feed control valves 54 and the discharge pumps 53 can draw ethyl acetate from the feed source 1 into the raw material tank 2. When a raw material tank 2 is full of ethyl acetate, closing its corresponding feed control valve 54 can cut off the supply of ethyl acetate from the feed source 1 to that raw material tank. The feed tank 2 supplies ethyl acetate, but this does not affect the supply of raw material source 1 to other unfilled feed tanks 2. This allows for individual control of each feed tank 2, improving overall flexibility. There are multiple relay tanks 3, each corresponding to one production line. This means that one supply system can meet the ethyl acetate supply needs of multiple production lines, effectively reducing production costs. A conveying pipe and a discharge pump 61 are installed between the feed tank 2 and the relay tanks 3. Each feed tank 2 is connected to all relay tanks 3, and each relay tank 3 is connected to all feed tanks 2. A discharge pipe 71 is installed between the relay tanks 3 and the mixing tank 4, and a discharge control valve 72 is installed on the discharge pipe 71. This invention first sends ethyl acetate into the feed tank 2 for storage through the feed source 1, reducing the use of gallon barrels and effectively reducing the floor space and utilization rate of the chemical warehouse. At the same time, reducing the use of gallon barrels can also avoid the generation of hazardous waste and environmental pollution, making it highly environmentally friendly. Then, the ethyl acetate stored in the feed tank 2 is sent to the mixing tank 4 through the discharge pump 61, reducing the frequency of material turnover and thus reducing labor costs.

[0026] In one embodiment of this utility model, the conveying pipe includes a main conveying pipe 62, first conveying branch pipes 63, and second conveying branch pipes 64. The number of first conveying branch pipes 63 is equal to the number of raw material tanks 2, and the number of second conveying branch pipes 64 is equal to the number of relay tanks 3. The main conveying pipe 62 is connected to all first conveying branch pipes 63 and all second conveying branch pipes 64. Each first conveying branch pipe 63 is connected to the outlet of a raw material tank 2, and each second conveying branch pipe 64 is connected to the inlet of a relay tank 3, thus realizing the connection between all raw material tanks 2 and the relay tank 3. All relay tanks 3 are connected, and the ethyl acetate in all raw material tanks 2 flows into the main feed pipe 62 through their respective first feed branch pipes 63, and then flows into the corresponding relay tanks 3 through the second feed branch pipes 64, realizing synchronous feeding of all relay tanks 3. At the same time, it ensures that the material source of all relay tanks 3 is uniform, avoiding the uneven phenomenon that the ethyl acetate capacity in one relay tank 3 is very large while the ethyl acetate capacity in another relay tank 3 is very small, thus improving the overall control and regulation of the supply system.

[0027] As an embodiment of this utility model, a first conveying control valve 65 is provided on the first conveying branch pipe 63. The outlet end of the raw material tank 2 can be controlled by the first conveying control valve 65. The operator can selectively control the opening or closing of the outlet of each raw material tank 2 according to the specific conditions of each raw material tank 2, so as to achieve uniform use of all raw material tanks 2. A second conveying control valve 66 is provided on the second conveying branch pipe 64. The inlet end of the relay tank 3 can be controlled by the second conveying control valve 66. The operator can selectively control the opening or closing of the inlet of each relay tank 3 according to the specific needs of each relay tank 3, so as to avoid the ethyl acetate in the relay tank 3 being too full and overflowing, or the ethyl acetate in the relay tank 3 being too low and affecting normal use. The number of discharge pumps 61 is equal to that of the first conveying branch pipes 63. Each first conveying branch pipe 63 is provided with a discharge pump 61. The ethyl acetate in each raw material tank 2 is discharged through an independent discharge pump 61, so as to achieve independent control of each raw material tank 2. The raw material tanks 2 do not interfere with each other during operation.

[0028] As one embodiment of this utility model, the ethyl acetate supply system also includes a control terminal, which is electrically connected to the unloading pump 53, the discharge pump 61, the feed control valve 54, the discharge control valve 72, the first conveying control valve 65, and the second conveying control valve 66. The control terminal allows for real-time remote monitoring and operation, enabling overall control of the supply system. When an abnormality occurs during operation, the operator can quickly cut off or stop the components causing the abnormality, improving overall work safety and stability. At the same time, the operation process is simple, effectively reducing manpower, lowering production costs, and improving the mixing efficiency of the adhesive used for polarizing plate bonding.

[0029] As one embodiment of this utility model, a filter 67 is provided on the feed main pipe 62. Ethyl acetate flows out from the raw material tank 2 and passes through the filter 67 before flowing into the relay tank 3. The filter 67 can effectively intercept impurities in the transported liquid, ensuring the cleanliness of the ethyl acetate flowing into the relay tank 3, so as to meet the subsequent use of ethyl acetate and improve the mixing quality of the adhesive for polarizing plate bonding. All the ethyl acetate flows into the feed main pipe 62. Therefore, installing the filter 67 on the feed main pipe 62 can not only achieve the filtration of ethyl acetate, but also effectively reduce the number of filters 67 and reduce production costs.

[0030] As an embodiment of this utility model, a gas balance pipe 81 is provided between the raw material tank 2 and the relay tank 3. A flame arrestor valve 82 is provided on the gas balance pipe 81, which can ensure that the raw material tank 2 and the relay tank 3 are in a gas balance state, and prevent the introduction of external gas into the raw material tank 2 or the relay tank 3 through the breather valve during liquid replenishment or drainage, which may cause safety hazards or affect the quality of the materials.

[0031] As one embodiment of this utility model, the outside of the raw material tank 2 is provided with a heat insulation layer 21, and a cooling pipe 22 is provided inside the heat insulation layer 21. Preferably, the cooling pipe 22 is a coil. The inlet and outlet of the cooling pipe 22 are respectively provided with cooling valves 23. Cooling water is injected into the cooling pipe 22 from the inlet and circulates in the cooling pipe 22, and then flows out from the outlet. This is beneficial to control the temperature in the raw material tank 2 and ensure that the temperature of ethyl acetate in the raw material tank 2 does not exceed 35°C.

[0032] As an embodiment of this utility model, the raw material tank 2 is equipped with a liquid level sensor 24, a liquid level gauge 25, a temperature sensor 26, and a pressure sensor 27. Preferably, the liquid level sensor 24 is a differential pressure liquid level sensor, displaying in volume units, and the liquid level gauge 25 is a remote liquid level gauge, displaying in height units. The simultaneous installation of two types of sensors in the raw material tank 2 can improve the fault tolerance of the components. When one of the liquid level sensor 24 or the liquid level gauge 25 fails, the other can still be used normally to avoid the failure of the entire supply system, thus realizing a dual protection mechanism. The liquid level sensor 24, the liquid level gauge 25, the temperature sensor 26, and the pressure sensor 27 are all electrically connected to the control terminal and transmit their respective collected data to the control terminal.

[0033] In one embodiment of this utility model, the relay tank 3 is connected to a weighing sensor 31 and a level switch 32. The level switch 32 controls the discharge pump 61. The weighing sensor 31 displays the weight in units of weight and is used to calculate the discharge weight of ethyl acetate in the relay tank 3. The level switch 32 controls the start and stop of the discharge pump 61 and also interlocks with the weighing sensor 31 to provide dual protection. Preferably, both the weighing sensor 31 and the level switch 32 are electrically connected to the control terminal and transmit their respective collected data to the control terminal.

[0034] As one embodiment of this utility model, the raw material tank 2 is connected to a nitrogen inlet pipe 83 and a nitrogen outlet pipe 84. The nitrogen inlet pipe 83 is equipped with a nitrogen emergency shut-off valve 85, the nitrogen outlet pipe 84 is equipped with a nitrogen unloading valve 86 and a flame arrestor valve 82, and the raw material tank 2 is equipped with a safety valve 87 to improve overall safety.

[0035] The workflow is as follows:

[0036] Step 1: The staff completes the pipeline connection between the material supply source 1 and the raw material tank 2, as well as the connection of the nitrogen pipeline, and completes the static electricity discharge;

[0037] Step 2: Based on the liquid level volume collected by the liquid level sensor 24 and the liquid level height collected by the liquid level gauge 25, the staff opens the feed control valve 54 and starts the unloading pump 53. Ethyl acetate is transported to the raw material tank 2 through the feed main pipe 51 and the feed branch pipe 52 to complete the unloading of ethyl acetate.

[0038] Step 3: Based on the temperature in the raw material tank 2 collected by the temperature sensor 26 and whether there is any material stored, the control terminal automatically controls the opening and closing of the cooling valve 23. If the temperature in the raw material tank 2 exceeds 35°C, the cooling valve 23 is opened to cool the raw material tank 2 with cooling water and control the temperature of ethyl acetate in the raw material tank 2.

[0039] Step 4: Based on the weight collected by the weighing sensor 31 and the liquid level height collected by the liquid level switch 32, and combined with the actual liquid level height of the raw material tank 2, the control terminal automatically turns on or off the discharge pump 61 to complete the material replenishment of the relay tank 3.

[0040] Step 5: According to the material feeding requirements of the adhesive preparation, the staff selectively opens the discharge control valve 72, and ethyl acetate flows from the corresponding relay tank 3 into the adhesive preparation tank 4. When the weight of the adhesive preparation tank 4 reaches the required amount, the control terminal controls the discharge control valve 72 to automatically close.

[0041] In summary, this utility model provides an ethyl acetate supply system. First, ethyl acetate is fed into the raw material tank 2 via the supply source 1, reducing the use of gallon containers and effectively reducing the floor space and utilization rate of the chemical warehouse. Reducing the use of gallon containers also avoids the generation of hazardous waste and environmental pollution, demonstrating strong environmental friendliness. Then, the ethyl acetate stored in the raw material tank 2 is sent to the mixing tank 4 via the discharge pump 61, reducing the frequency of material turnover and thus reducing labor costs. The conveying pipe adopts a branch-main-branch structure, achieving synchronous conveying to all relay tanks 3 while ensuring a unified material source for all relay tanks 3, improving the overall control and regulation of the supply system. Each first conveying branch pipe 63 is equipped with a discharge pump 61, and ethyl acetate in each raw material tank 2 is discharged through an independent discharge pump 61, achieving independent control of each raw material tank 2, ensuring that the raw material tanks 2 do not interfere with each other during operation. Real-time remote control via the control terminal... The monitoring operation allows for overall control of the supply system. When an abnormality occurs during operation, staff can quickly cut off or stop the affected components, improving overall safety and stability. The operation is simple, effectively reducing manpower, lowering production costs, and increasing the efficiency of adhesive preparation for polarizing plates. Installing filter 67 on the main feed pipe 62 achieves ethyl acetate filtration while effectively reducing the number of filters 67, thus lowering production costs. The gas balance pipe 81 and flame arrestor valve 82 ensure a gas balance between the raw material tank 2 and the relay tank 3, preventing external gas from entering the raw material tank 2 or relay tank 3 during replenishment or drainage, thus avoiding safety hazards or affecting material quality. The level sensor 24 and level gauge 25 provide a dual protection mechanism. The level switch 32 and weighing sensor 31 are interlocked for dual protection.

[0042] It should be emphasized that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An ethyl acetate supply system, characterized in that, The system includes a material supply source (1), a raw material tank (2), a relay tank (3), and a mixing tank (4). There are multiple raw material tanks (2). A main feed pipe (51) and branch feed pipes (52) are provided between the material supply source (1) and the raw material tanks (2). The number of branch feed pipes (52) is equal to the number of raw material tanks (2). The main feed pipe (51) is connected to all the branch feed pipes (52). The main feed pipe (51) is connected to the material supply source (1). Each branch feed pipe (52) is connected to the inlet of one raw material tank (2). A discharge pump (53) is provided on the main material pipe (51), and a feed control valve (54) is provided on the feed branch pipe (52). There are multiple relay tanks (3). A conveying pipe and a discharge pump (61) are provided between the raw material tank (2) and the relay tank (3). Each raw material tank (2) is connected to all the relay tanks (3), and each relay tank (3) is connected to all the raw material tanks (2). A discharge pipe (71) is provided between the relay tank (3) and the glue mixing tank (4). A discharge control valve (72) is provided on the discharge pipe (71).

2. The ethyl acetate supply system according to claim 1, characterized in that, The conveying pipe includes a main conveying pipe (62), a first conveying branch pipe (63), and a second conveying branch pipe (64). The number of first conveying branch pipes (63) is equal to the number of raw material tanks (2), and the number of second conveying branch pipes (64) is equal to the number of relay tanks (3). The main conveying pipe (62) is connected to all the first conveying branch pipes (63) and all the second conveying branch pipes (64). Each first conveying branch pipe (63) is connected to the outlet of one raw material tank (2), and each second conveying branch pipe (64) is connected to the inlet of one relay tank (3).

3. The ethyl acetate supply system according to claim 2, characterized in that, The first conveying branch pipe (63) is provided with a first conveying control valve (65), the second conveying branch pipe (64) is provided with a second conveying control valve (66), and the number of discharge pumps (61) is equal to that of the first conveying branch pipe (63), with each first conveying branch pipe (63) being provided with a discharge pump (61).

4. The ethyl acetate supply system according to claim 3, characterized in that, The ethyl acetate supply system also includes a control terminal, which is electrically connected to the unloading pump (53), the discharge pump (61), the feed control valve (54), the discharge control valve (72), the first conveying control valve (65), and the second conveying control valve (66).

5. The ethyl acetate supply system according to claim 2, characterized in that, A filter (67) is provided on the main conveying pipe (62).

6. The ethyl acetate supply system according to claim 1, characterized in that, A weather balance pipe (81) is provided between the raw material tank (2) and the relay tank (3), and a flame arrestor valve (82) is provided on the weather balance pipe (81).

7. The ethyl acetate supply system according to claim 1, characterized in that, The raw material tank (2) is provided with an insulation layer (21) on the outside, and a cooling pipe (22) is provided inside the insulation layer (21). The inlet and outlet of the cooling pipe (22) are respectively provided with cooling valves (23).

8. The ethyl acetate supply system according to claim 1, characterized in that, The raw material tank (2) is equipped with a liquid level sensor (24), a liquid level gauge (25), a temperature sensor (26), and a pressure sensor (27).

9. The ethyl acetate supply system according to claim 1, characterized in that, The relay tank (3) is connected to the weighing sensor (31) and the level switch (32), and the level switch (32) controls the discharge pump (61).

10. The ethyl acetate supply system according to claim 1, characterized in that, The raw material tank (2) is connected to a nitrogen inlet pipe (83) and a nitrogen outlet pipe (84). The nitrogen inlet pipe (83) is equipped with a nitrogen emergency shut-off valve (85), the nitrogen outlet pipe (84) is equipped with a nitrogen unloading valve (86) and a flame arrestor valve (82), and the raw material tank (2) is equipped with a safety valve (87).

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