CN207760019U - A kind of filling liquid scale applied to resin fast package - Google Patents

Abstract

A liquid filling scale used in rapid resin packaging, including a platform scale, a control cabinet, and a filling head structure. The filling head structure includes a filter, a pipe diameter conversion structure, a pneumatic regulating valve, an inner sleeve assembly, and an outer sleeve The upper end of the pipe diameter change structure is connected with the filter, and the lower end is connected with the pneumatic control valve; the inner sleeve assembly and the outer sleeve assembly are arranged in the liftable waste gas recovery cover, and the lower end of the pneumatic adjustment valve is connected with the The inner sleeve assembly is connected, the outer sleeve assembly can be lifted and lowered outside the inner sleeve assembly, the inner sleeve assembly and the outer sleeve assembly are provided with an inter-sleeve sealing assembly, and a lifting cylinder is fixed above the inner sleeve assembly. The outlet plug valve assembly is arranged at the outlet of the outer sleeve assembly, and a pneumatic liquid receiving cup assembly is arranged under the outer sleeve assembly. The utility model is simple and reasonable, easy to install, intuitive, fast and safe to operate, has a strong explosion-proof function, reduces labor intensity, improves work efficiency, and improves the work environment at the same time.

Description

A Liquid Filling Scale Applied to Rapid Packaging of Resin

technical field

The utility model belongs to the technical field of liquid filling equipment manufacturing, and relates to a filling mechanism, in particular to a liquid filling scale used in rapid resin packaging, which can be applied to the production quantitative packaging control of resin, polyurethane and other chemical materials.

Background technique

In the traditional high-viscosity material filling control, the commonly used methods are: the slow filling mode of the material in the silo by its own gravity, the filling mode of transferring a pneumatic diaphragm pump or booster pump in the middle, and the pressurized fast filling mode. Slow three-stage speed regulation control mode. In comparison, the third fast, medium and slow three-level speed regulation control mode has higher working efficiency, but its disadvantage is: due to the instability of pressure addition, there is often a risk of gas explosion, that is, the front end pressure is constant , but when the material in the silo is lower than 20%, the compressed air will enter the material barrel above the electronic scale before the material, and the gas explosion phenomenon often occurs, and the working environment of the operators is extremely bad, that is, the efficiency of the system is actually improved. In fact, the operating environment is at the expense of the operating workers. In actual operation, the operating workers' satisfaction is extremely low.

After investigation, the existing Chinese patent No. CN201410426868.8 "An Automatic Metering Liquid Filling Device" includes a stand, a reaction kettle and a filter barrel; a control box is arranged on one side of the stand; A weighing platform is set at one end; a weighing sensor is set at the lower end of the weighing platform, and a weighing instrument is set on the control box; the weighing instrument includes a central processing chip; a digital/analog conversion module, a man-machine interface module, and a synchronous dynamic random storage The modules are all connected with the central processing chip; a programmable logic module provided with a monitoring program is also connected with the central processing chip. This filling device is also used for filling viscous, slow-flowing high-viscosity materials such as epoxy resin, yellow glue, and all-purpose glue. Close the output channel and restart automatically, which is easy to cause accidents, and has not improved the problems such as gas explosion.

Therefore, there is an urgent need to develop a filling device that is fast, efficient, avoids gas explosion, and is easy to clean to meet the needs of weighing and packaging resins.

Contents of the invention

The technical problem to be solved by the utility model is to provide a liquid filling scale for rapid packaging of resin with reasonable structure, convenient installation and fast and safe operation in view of the above-mentioned technical situation.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a liquid filling scale applied to resin rapid packaging, including a platform scale of the liquid filling scale, a control cabinet arranged on the platform scale, a material barrel and a filling machine. The head structure is characterized in that: the filling head structure includes a filter, a pipe diameter conversion structure, a pneumatic regulating valve used to cooperate with the control cabinet, an inner sleeve assembly, an outer sleeve assembly, and a plug valve assembly at the discharge port, The upper end of the pipe diameter changing structure is connected to the outlet of the lower end of the filter, and the lower end of the pipe diameter changing structure is connected to the upper inlet of the pneumatic control valve; the inner sleeve assembly and the outer sleeve assembly are arranged in a liftable waste gas recovery cover, The bottom of the pneumatic regulating valve is fixed on the liftable exhaust gas recovery cover, the outlet of the lower end of the pneumatic regulating valve is connected with the upper end of the inner sleeve assembly, the outer sleeve assembly is set on the outside of the inner sleeve assembly in a liftable manner, and the inner sleeve assembly There is an adjustable inter-tube sealing assembly between the outer sleeve assembly and the inner sleeve assembly to prevent materials from spraying out between the inner sleeve assembly and the outer sleeve assembly. The lifting cylinder, the outlet gate valve assembly is arranged at the outlet of the lower end of the outer sleeve assembly, and a pneumatic liquid receiving cup assembly for leaking liquid is also arranged below the outer sleeve assembly.

As an improvement, the pipe diameter changing structure is a circular truncated structure with a small upper port diameter and a large lower port diameter, and the pipe diameter changing mechanism is welded by stainless steel materials.

As an improvement, the liftable exhaust gas recovery cover adopts a double stainless steel sleeve structure, which is composed of a stainless steel outer cover and a stainless steel inner cover. The stainless steel inner cover can be lifted and lowered in the stainless steel outer cover, and is connected and fixed with the outer sleeve assembly. The stainless steel outer cover The upper end is fixed and aligned with the upper end of the inner sleeve assembly, and the bottom edge of the pneumatic regulating valve is fixed on the stainless steel outer cover by bolts.

As an improvement, the lifting cylinder is two left and right, the lifting cylinder is fixed on the stainless steel outer cover, the lower end of the movable plunger of the lifting cylinder is connected and fixed with the upper end of the stainless steel inner cover, and a limit switch that cooperates with the lifting cylinder and controls the lifting Three-position five-way solenoid valve operated by cylinder.

Further improvement, the sealing assembly between the sleeves is arranged circumferentially between the upper inner side of the outer sleeve assembly and the inner sleeve assembly, the sealing assembly between the sleeves is composed of upper and lower clamping blocks, a V-shaped sealing ring arranged between the upper and lower clamping blocks and It is composed of adjustable sanitary clamps, and the V-shaped sealing ring is made of PTFE.

As a further improvement, the outlet gate valve assembly is composed of a gate valve cylinder, a gate and a gate support, wherein the gate is a stainless steel gate, and the gate support is made of high-hardness, corrosion-resistant polycarbonate It is made of vinyl fluoride material, and is equipped with two magnetic limit switches that cooperate with the flapper valve cylinder and a three-position five-way solenoid valve that controls the action of the flapper valve cylinder.

To further improve, the pneumatic liquid receiving cup assembly is composed of a liquid receiving cylinder, a magnetic switch and a liquid receiving cup. The left and right sides of the bottom of the outer sleeve assembly are hinged, the upper end of the liquid receiving cylinder is rotatably fixed on the inner side of the upper end of the stainless steel cover, and the lower end of the liquid receiving cylinder is hingedly connected with the side of the liquid receiving cup.

As a further improvement, the bottom outlet edge of the inner sleeve assembly is equipped with a gasket with a sealing structure and a locking structure against the inner wall of the inner sleeve assembly to prevent the outer sleeve assembly from swinging sideways during the lifting process.

Still further, the control cabinet is sealed with an explosion-proof structure of a flange. The control cabinet is equipped with a touch screen, a PLC programmable controller and a weighing module, wherein the touch screen is an explosion-proof touch screen, and the touch screen panel is embedded in the control cabinet.

Finally, the control cabinet is equipped with a plurality of real-time field bus communication interfaces with PC and other PLC and DCS systems.

Compared with the prior art, the utility model has the advantages of:

The overall structure adopts a pneumatic control valve to replace the original pneumatic shut-off valve, which is reasonable in design, easy to install, easy to operate, and exhaust gas recovery is compliant; the overall structure and material contact parts are made of stainless steel, and other structures are made of stainless steel or carbon steel, which has a long service life. High hygienic level; adjustable sealing components between the inner and outer cylinder sleeves are used, and the sealing ring is made of V-shaped polytetrafluoroethylene material, which can be applied to most strong acid and strong alkali sites; the lifting exhaust gas recovery cover is made of stainless steel , Fully consider the problem of equipment cleaning, which can greatly improve the cleanliness of product production; the touch screen is an explosion-proof touch screen, which can realize direct operation in dangerous places. This new type of use is simple and reasonable, easy to install, intuitive, fast and safe to operate, which greatly reduces the labor intensity of operators, improves work efficiency, and improves the working environment of operators at the same time. It is suitable for high-viscosity chemical raw materials, such as resin and polyurethane. It is suitable for the promotion and use of liquid filling scales in the chemical industry.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the structural representation of the filling head structure in the utility model embodiment;

FIG. 4 is a side view of FIG. 3 .

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 4, a liquid filling scale applied to resin rapid packaging, including a platform scale 1 of the liquid filling scale, a material barrel 10 arranged on the platform scale 1, a control cabinet 2 and a filling head structure , the platform scale 1 is provided with a bracket 101 for placing the material barrel 10, and the control cabinet 2 is fixed on one side of the bracket 101. The control cabinet 2 is sealed with a flange plate explosion-proof structure as a whole, and the sealing effect is good, and it can work in explosion-proof occasions for a long time; The filling system includes a filter 3, a pipe diameter conversion structure 4, a pneumatic control valve 5 for matching the control cabinet 2, an inner sleeve assembly 7, an outer sleeve assembly 8, a seal assembly between sleeve sleeves 9, and a gate valve at the discharge port Component 12 and pneumatic liquid contact cup assembly 13, wherein, the pipe diameter change mechanism 4 is welded by stainless steel material, and the pipe diameter change structure 4 is a circular platform structure with a small upper port diameter and a large lower port diameter. In this embodiment, the pipe diameter change structure 4 is DN125 to DN150, the upper end of the pipe diameter conversion structure 4 is connected to the lower end outlet of the filter 3, and the lower end of the pipe diameter conversion structure 4 is connected to the upper end inlet of the pneumatic regulating valve 5; the inner cylinder sleeve assembly 7 and the outer cylinder sleeve Component 8 is set in a liftable waste gas recovery cover 6, and the outer sleeve component 8 is sleeved outside the inner sleeve component 7 in a liftable manner. The liftable exhaust gas recovery cover 6 adopts a double stainless steel thin-walled sleeve structure, which can ensure filling The sputtered material is quickly stripped and cleaned during the process. The liftable exhaust gas recovery cover 6 is composed of a stainless steel outer cover 61 and a stainless steel inner cover 62. The stainless steel inner cover 62 is set in the stainless steel outer cover 61 in a liftable manner, and is connected with the outer sleeve assembly 8 Fixed, the upper end of the stainless steel outer cover 61 is fixed and aligned with the upper end of the inner sleeve assembly 7, the bottom edge of the pneumatic regulating valve 5 is fixed on the stainless steel outer cover 61 by bolts, the outlet of the lower end of the pneumatic regulating valve 5 and the inner sleeve assembly 7 The upper end is connected, the pneumatic regulating valve 5 cooperates with the control of the control cabinet 2 and the real-time data of the platform scale 1, and realizes the continuous adjustment of the flow rate through the PLC program control, which can reduce the gas explosion caused by the excessive flow rate and avoid the excessive flow rate. Work efficiency problems caused by low;

The top of the inner sleeve assembly 7 is fixed with a lifting cylinder 81 for controlling the lifting of the outer sleeve assembly 8 and limiting the position. There are two lifting cylinders 81 on the left and right. The lifting cylinder 81 is fixed on the stainless steel cover 61. The lower end penetrates and is connected and fixed with the upper end of the stainless steel inner cover 62, so that the stainless steel inner cover 62 can be driven up and down by the lifting cylinder 81, thereby driving the outer sleeve assembly 8 to lift, and a limit switch and a lifting cylinder 81 are provided. The three-position five-way solenoid valve that controls the action of the lifting cylinder, please refer to the conventional hydraulic principle, can lift the outer sleeve assembly 7, and can stop at any set position, so as to perform the necessary actions in the filling process, and at the same time It can be used for the adjustment of barrels of different specifications; the sealing assembly 9 between sleeves is arranged in a circumferential seal between the inner side of the upper end of the outer sleeve assembly 8 and the inner sleeve assembly 7, so as to prevent materials from flowing from the inner sleeve assembly 7 and the outer sleeve assembly 7 during filling. It is sprayed between the sleeve components 8, and the sealing component 9 between the sleeve sleeves is composed of the upper and lower clamping blocks 92, the V-shaped sealing ring 91 between the upper and lower clamping blocks, and the adjustable sanitary clamp 93. The adjustable sanitary clamp 93 is set on the outer periphery of the upper and lower clamping blocks 92, and the tightness is adjusted by connecting screws. The V-shaped sealing ring 91 is made of PTFE material. Since the sealing ring is not allowed to be too tight, the adjustable sanitary clamp 93 is designed It is very important, it can be beneficial to the adjustment of the sealing level, and it is convenient for the disassembly and cleaning of the equipment during the shift, so as to eliminate the potential health hazards of the equipment as a whole; The gate valve assembly 12 at the discharge port is designed considering the characteristics of extremely poor fluidity of high-viscosity materials under no pressure. The gate valve assembly 12 at the discharge port is composed of a gate valve cylinder 122, a gate plate 121 and a gate valve Plate support 123 is formed, wherein inserting plate 121 is a stainless steel inserting plate, inserting plate support 123 is made of high hardness, corrosion-resistant polytetrafluoroethylene material processing, can reduce movement noise, inserting plate 121 inserts on inserting plate In the support 123, the gate valve cylinder 122 is connected to drive the gate valve 121 to move, and there are two magnetic limit switches that cooperate with the gate valve cylinder 122 and a three-position five-way solenoid valve that controls the gate valve cylinder 122 to move , please refer to the conventional hydraulic principle, so that the opening of the insert plate 121 can be adjusted, and it can stop at any set position, so as to perform the necessary actions in the filling process; the pneumatic liquid contact cup assembly 13 is arranged on the outer sleeve assembly 8 Below, the pneumatic liquid contact cup assembly 13 is made up of a liquid contact cylinder 132, a magnetic switch and a liquid contact cup 131. The upper end is rotatably fixed on the inner side of the upper end of the stainless steel cover 61, the lower end of the liquid receiving cylinder 132 is hingedly connected with the side of the liquid receiving cup 131, and the liquid receiving cylinder 132 drives the liquid receiving cup 131 to swing back and forth, and the bottom of the liquid receiving cup 131 The circular arc surface designed to match the bottom of the plate support 123 can avoid the formation of noise sources during the working process in addition to the role of leakage and contact with liquid.

In addition, the upper interface of the liftable waste gas recovery cover 6 is connected with a negative pressure recovery system, which can absorb excess harmful gases emitted by materials during the production process, so that the waste gas is not easy to flow into the atmosphere during the production process, and the production environment is more environmentally friendly. The design of the liftable waste gas recovery cover 6 has the following characteristics: first, it avoids the phenomenon that the previous rubber cover is prone to foaming in a strong corrosive environment, and the foamed fragments fall into the product barrel, resulting in secondary pollution; second, it is convenient Clean up the products splashed on it, and can be cleaned directly with cleaning solvent; in order to prevent the outer sleeve assembly 8 from swinging sideways during the lifting process, the bottom outlet edge of the inner sleeve assembly 7 is installed with the inner sleeve assembly 8 The gasket 11 of the sealing band clamping structure of the inner wall.

The control cabinet 2 is provided with a touch screen 21, a PLC programmable controller 22 and a weighing module, wherein the touch screen 21 is an explosion-proof touch screen, and the panel of the touch screen 21 is embedded in the control cabinet 2, and the control cabinet 2 is also installed with multiple PCs and The real-time field bus communication interface of other PLC and DCS systems, the whole system has the effect of real-time monitoring of process data.

The weight of the filling head in this embodiment is only 3.5Kg, which can greatly reduce energy consumption, and the overall design is flatter, saving space.

The electrical distribution components selected in this embodiment can ensure stable use on the industrial site, the selected intrinsically safe equipment meets the requirements of relevant national standards, and the selected flameproof cabinets and interfaces are also manufactured and assembled in accordance with relevant standards; this implementation The example liquid filling scale has the following characteristics:

1) The overall structure adopts a pneumatic control valve to replace the original pneumatic shut-off valve, which is reasonable in design, easy to install, easy to operate, and exhaust gas recovery is compliant;

2) The part of the overall structure in contact with the material is made of stainless steel, and other structures are made of stainless steel or carbon steel, which has a long service life and a high hygiene level;

3) The adjustable seal assembly between the inner and outer cylinder sleeves and the liftable waste gas recovery cover are made of stainless steel, fully considering the equipment cleaning problem, which can greatly improve the cleanliness of product production;

4) The matching touch screen panel is installed as a built-in structure, which is quick to operate and can realize direct operation in dangerous places;

5) The built-in data record of the touch screen can query some historical data;

6) Independently complete the automatic control of pneumatic regulating valve, lifting mechanism and liquid cup;

7) Store multiple sets of recipes and recipe name information storage, which is convenient for the operator to quickly call up barrels of different specifications;

8) According to the different specifications of the barrel, the initial height of the corresponding filling head can be selected;

9) The dynamic curve of filling output and weight can be queried;

10) Standard isolation RS232 and RS485 interface;

11) Serial communication supports micro-printer format;

12) Support MODBUS RTU and Ethernet communication;

13) Joint venture brand terminals are used.

The utility model can realize the operation control of user management, parameter setting, data reading display, process control, data storage and alarm of the control equipment, and realize human-computer interaction.

The above is only the preferred embodiment of the utility model, and it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and modifications can also be made. And retouching should also be regarded as the protection scope of the present utility model.

Claims (10)

1. A liquid filling scale applied to resin rapid packaging, comprising a platform scale of the liquid filling scale, a control cabinet arranged on the platform scale, a material barrel and a filling head structure, characterized in that: the filling head The structure includes a filter, a pipe diameter changing structure, a pneumatic control valve for matching the control cabinet, an inner sleeve assembly, an outer sleeve assembly and a plug valve assembly at the outlet, wherein the upper end of the pipe diameter changing structure is connected to the lower end of the filter The outlet is connected, and the lower end of the pipe diameter conversion structure is connected to the upper inlet of the pneumatic regulating valve; the inner sleeve assembly and the outer sleeve assembly are arranged in a liftable waste gas recovery cover, and the bottom of the pneumatic control valve is fixed on the liftable waste gas recovery cover Above, the lower end outlet of the pneumatic regulating valve is connected with the upper end of the inner sleeve assembly, the outer sleeve assembly can be raised and lowered outside the inner sleeve assembly, and there is a device between the inner sleeve assembly and the outer sleeve assembly to prevent material The adjustable sealing assembly between the inner sleeve and the outer sleeve assembly is sprayed out, the upper part of the inner sleeve assembly is fixed with a lifting cylinder for controlling the lifting and limiting of the outer sleeve assembly, and the plug valve assembly at the discharge port is set At the discharge port at the lower end of the outer sleeve assembly, a pneumatic liquid receiving cup assembly for leaking and contacting liquid is also arranged below the outer sleeve assembly. 2. The liquid filling scale according to claim 1, characterized in that: the pipe diameter conversion structure is a circular platform structure with a small upper port diameter and a larger lower port diameter, and the pipe diameter conversion mechanism is welded by stainless steel. 3. The liquid filling scale according to claim 1, characterized in that: the liftable exhaust gas recovery cover adopts a double stainless steel sleeve structure, which is composed of a stainless steel outer cover and a stainless steel inner cover, and the stainless steel inner cover can be lifted and lowered. The stainless steel outer cover is connected and fixed with the outer sleeve assembly, the upper end of the stainless steel outer cover is fixed and aligned with the upper end of the inner sleeve assembly, and the bottom edge of the pneumatic regulating valve is fixed on the stainless steel outer cover by bolts. 4. The liquid filling scale according to claim 3, characterized in that: the lifting cylinder is two left and right, the lifting cylinder is fixed on the stainless steel outer cover, and the lower end of the movable plunger of the lifting cylinder is connected and fixed with the upper end of the stainless steel inner cover , and is provided with a limit switch that cooperates with the lifting cylinder and a three-position five-way solenoid valve that controls the movement of the lifting cylinder. 5. The liquid filling scale according to claim 1, characterized in that: the sealing assembly between the sleeve and the sleeve is arranged circumferentially between the inner side of the upper end of the outer sleeve assembly and the inner sleeve assembly, and the sealing assembly between the sleeve and sleeve is clamped up and down. Block, V-shaped sealing ring located between the upper and lower clamping blocks and adjustable sanitary clamps, wherein the V-shaped sealing ring is made of PTFE. 6. The liquid filling scale according to claim 1, characterized in that: the outlet gate valve assembly is composed of a gate valve cylinder, a gate and a gate support, wherein the gate is a stainless steel gate , the gate support is made of high-hardness, corrosion-resistant polytetrafluoroethylene material, and is equipped with two magnetic limit switches that cooperate with the gate valve cylinder and a three-position five-way that controls the gate valve cylinder action The electromagnetic valve. 7. The liquid filling scale according to claim 1, characterized in that: the pneumatic liquid receiving cup assembly is composed of a liquid receiving cylinder, a magnetic switch and a liquid receiving cup, and the bottom of the liquid receiving cup is in the shape of a plate support The bottom of the matching arc surface, the upper end of the liquid receiving cup is hinged with the left and right sides of the bottom of the outer sleeve assembly, the upper end of the liquid receiving cylinder is rotatably fixed on the inner side of the upper end of the stainless steel cover, and the lower end of the liquid receiving cylinder is connected to the The sides of the liquid cup are hingedly connected. 8. The liquid filling scale according to any one of claims 1 to 7, characterized in that: the bottom outlet edge of the inner sleeve assembly is installed against the inner wall of the inner sleeve assembly to prevent the outer sleeve from The seal is a gasket with a clamping structure for the sideways swing of the component during the lifting process. 9. The liquid filling scale according to any one of claims 1 to 7, characterized in that: the control cabinet as a whole is sealed with a flange plate explosion-proof structure, and the control cabinet is provided with a touch screen, a PLC programmable controller and a weighing scale. Heavy module, in which the touch screen is an explosion-proof touch screen, and the touch screen panel is embedded in the control cabinet. 10. The liquid filling scale according to claim 9, characterized in that: the control cabinet is equipped with a plurality of real-time field bus communication interfaces with PC and other PLC and DCS systems.