CN104973552A - Corrosive solution filling system - Google Patents

Abstract

The invention relates to a corrosive solution filling system, comprising: a liquid inlet pipeline, a liquid separation tank, a liquid separation pipeline, a cleaning discharge pipe and a filling valve; one end of the liquid inlet pipeline and the liquid separation tank The upper end is connected; the upstream end of the liquid inlet pipeline is connected with the liquid separation tank, and a filter, a hand valve, and an electric diaphragm are sequentially installed; the upper end of the cleaning discharge pipe is connected with the lowest point of the liquid separation tank bottom, and A valve is installed at the lower end; the upper end of the liquid separation pipeline communicates with the bottom of the liquid separation tank, and the lower end is connected with the filling device. In the present invention, all parts in contact with materials are made of homopolypropylene or polytetrafluoroethylene, which can resist the corrosion of liquids such as strong acids with a pH value approaching 0 and strong alkalis with a pH value approaching 14; The invention has the advantages of simple structure, convenient operation, low cost, etc., and is suitable for automatic filling machines under the liquid surface of small and medium-sized packaging barrels in the chemical industry.

Description

Corrosive solution filling system

technical field

The invention relates to the technical field of chemical product liquid filling, in particular to a corrosive solution filling system.

Background technique

In terms of chemical filling in the chemical industry at home and abroad, in the early days, only the liquid surface of the oil gun was filled manually; because the chemicals are volatile and corrosive, they will cause harm to the human body. Some economically powerful chemical companies gradually use automatic filling machines to keep workers away from the hazards of chemicals, and began to purchase imported filling machines, but the cost is very high and maintenance is inconvenient.

In recent years, there have been automatic filling machines for small packages below 5L, such as acid-base solutions, disinfectants, pesticides, detergents, etc., but the main structure of the filling system is made of steel or high-quality stainless steel with surface sprayed with anti-corrosion materials; the filling valve is still The traditional top-opening high-quality stainless steel filling valve is adopted. If the sprayed anti-corrosion material is damaged and falls off, the steel will be corroded; the corrosion resistance of high-quality stainless steel is also limited, and it will also be corroded if it is exposed to highly corrosive solutions for a long time. After the metal material is corroded, there is a risk of material contamination. As for the medium drum packaging of about 20L, there is no mature automatic filling equipment on the market.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a corrosive solution filling system with simple structure and low cost, which is suitable for small and medium-sized packaging barrels.

In order to solve the above technical problems, the technical solution of the present invention is a corrosive solution filling system, including: a liquid inlet pipeline, a liquid separation tank, a liquid separation pipeline, a cleaning discharge pipe and a filling valve;

One end of the liquid inlet pipeline communicates with the upper end of the liquid separation tank; a filter, a hand valve, and an electric diaphragm are installed in sequence from the upstream end of the liquid inlet pipeline to the connection end with the liquid separation tank;

The upper end of the cleaning drain pipe communicates with the lowest point at the bottom of the liquid separation tank, and a valve is installed at the lower end;

The upper end of the liquid separation pipeline communicates with the bottom of the liquid separation tank, and the lower end is connected with the filling device.

The filling valve includes a flow control valve, a connecting piece, a valve stem, a filling chamber, a guide valve body, a valve core, a valve opening cylinder and a cylinder bracket;

The upper end of the flow control valve is connected to the lower end of the liquid-dispensing pipeline through a hose, and its lower end is connected to the feeding port of the filling chamber; the valve opening cylinder is arranged on the top of the filling chamber, and is fixed by Supported by the cylinder bracket, the piston rod of the valve-opening cylinder is connected with the valve stem through a connecting piece to control the valve core to open or close the valve. The valve core is set at the bottom of the filling chamber; the valve stem passes through the guide valve body , the guide valve body guides the valve stem moving up and down.

The liquid distribution pipeline includes 6 liquid distribution pipes, and the vertical heights of the connections between the 6 liquid distribution pipes and the liquid separation tank are all the same.

Filters, hand valves, diaphragm valves, liquid inlet pipes, liquid separation tanks, liquid separation pipes, cleaning discharge pipes, hoses, flow control valves, valve stems, filling chambers, guide valve bodies, valve cores in contact with liquid materials Most of the parts are made of homopolypropylene or polytetrafluoroethylene.

Beneficial effects of the present invention:

(1) In the present invention, all parts in contact with materials are made of homopolymerized polypropylene or polytetrafluoroethylene, which can resist liquids such as strong acids with pH values approaching 0 and strong alkalis with pH values approaching 14. corrosion;

(2) The present invention has the advantages of simple structure, convenient operation, low cost, etc., and is suitable for automatic subsurface filling machines for small and medium-sized packaging barrels in the chemical industry.

Description of drawings

Fig. 1 is the structural representation of corrosive solution filling system of the present invention;

Fig. 2 is a sectional view of A-A in Fig. 1 .

In the figure: 1. Filter; 2. Hand valve; 3. Diaphragm valve; 4. Liquid inlet pipe; 5. Liquid separation tank; 6. Liquid separation pipe; 7. Cleaning liquid discharge pipe; Valve opening cylinder; 10. Cylinder bracket; 11. Flow control valve; 12. Connecting piece; 13. Valve stem; 14. Filling chamber; 15. Packaging barrel; 16. Guide valve body;

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

The corrosive solution filling system of this embodiment is a six-station corrosive solution filling system, including: a liquid inlet pipeline 4, a liquid separation tank 5, a liquid separation pipeline 6 and a filling valve;

The liquid inlet pipeline 4 is sequentially provided with a filter 1, a hand valve 2 and a diaphragm valve 3 from the liquid inlet; the end communicates with the upper end of the liquid separator tank 5;

Set the filter 1 to filter impurities, set the hand valve 2 to facilitate cleaning the filter, and set the electric diaphragm valve 3 to control the pipeline pressure;

The tank top and tank bottom of the liquid separation tank 5 are hemispherical; specifically, the liquid separation tank 5 is formed by two identical pipe caps by hot-melt welding;

As shown in Figure 2, the liquid distribution pipeline 6 includes 6 liquid distribution pipes, the upper ends of the 6 liquid distribution pipes are respectively connected with the bottom of the liquid separation tank 5; the lower ends are respectively connected with the filling valve through the hose 8 , the hose 8 should be long enough to ensure the up and down movement of the filling valve, and its flexibility can also be used to facilitate the filling stations to be arranged in a straight line or a circular rotation type;

The vertical heights of the joints of the 6 liquid pipes and the liquid tank 5 are consistent, and the joints of the 6 liquid pipes and the liquid tank 5 are evenly distributed on the same radial circumference to ensure that the six work The pressure of the liquid distribution line is consistent when filling at the same time;

The upper end of the cleaning drain pipe 7 is connected at the lowest point of the bottom of the liquid separation tank 5, and a valve is installed at the lower end thereof, the valve is in a normally closed state and is only opened when the pipeline and the liquid separation tank are cleaned;

The filling valve includes a flow control valve 11, a connecting piece 12, a valve stem 13, a filling cavity 14, a guide valve body 16, a valve core 17, a valve opening cylinder 9 and a cylinder support 10;

The upper end of the flow control valve 11 communicates with the hose 8, and the lower end is connected to the feed ports of the six filling chambers 14; the flow control valve 11 controls the flow rate during filling; the valve opening cylinder 9 is arranged on the The top of the filling chamber 14 is supported by a fixed cylinder bracket 10. The piston rod of the valve opening cylinder 9 is connected with the valve stem 13 through a connecting piece 12 to control the valve core 17 to open or close the valve. The core 17 is arranged at the bottom of the filling chamber 14, which can avoid the dripping of the liquid material after the valve is closed; the valve stem 13 passes through the guide valve body 17, and the guide valve body 17 guides the valve stem 13 moving up and down;

The corrosive solution filling system includes a filter 1, a hand valve 2, a diaphragm valve 3, a liquid inlet pipe 4, a liquid separation tank 5, a liquid separation pipe 6, a cleaning discharge pipe 7, a hose 8, a flow control All parts including valve 11, valve stem 13, filling chamber 14, guide valve body 16, and valve core 17 are made of polymer plastics: homopolypropylene or polytetrafluoroethylene The material of the sealing ring is fluororubber; the remaining parts, such as the valve opening cylinder 9, the cylinder bracket 10 and the connector 12, are not in contact with the liquid material, and metal materials can be used.

The working process of the system of the present invention is as follows:

Depending on whether the material is easy to foam or not, it can be filled with a large or small flow rate; the material flows into the filling system by a hydraulic pump, and when the packaging barrel 15 is in place, the filling valve is lowered from the initial position and inserted into the bottom of the packaging barrel 15 for liquid filling. Filling, in order to ensure the filling accuracy, when the filling target is about to be reached as the liquid level increases, the filling valve rises to the liquid level, and the small flow rate is filled until the filling target is reached. Then the filling valve fully rises to the initial position, and the six packaging drums 15 full of materials are transported away by the conveying line, and after waiting for the next group of packaging drums to be in place, the next round of filling tasks is carried out.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present invention can still be modified Or perform equivalent replacements on some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be included in the scope of the technical solutions claimed in the present invention.

Claims (4)

1. a corrosive solution bulking system, is characterized in that: comprising: water influent pipeline, point flow container, separatory pipeline, cleaning drain pipe and filling valve;

Described water influent pipeline one end and described point of flow container upper end UNICOM; Described water influent pipeline upstream extremity is provided with filter, hand valve, electronic barrier film successively to a point flow container coupling end;

Described cleaning drain pipe upper end is communicated with described separatory pot bottom nadir, and its lower end is provided with valve;

Described separatory pipeline upper end is communicated with described separatory pot bottom, and lower end is connected with filling valve.

2. according to steam turbine for nuclear power station low-pressure welding rotor weld seam automatic checkout equipment according to claim 1, it is characterized in that: described filling valve comprises flow-controlling gate, attaching parts, valve rod, filling chamber, guiding valve body, spool, valve opening cylinder and air cylinder support;

Described flow-controlling gate upper end is connected with separatory pipeline lower end by flexible pipe, and its lower end is connected to the inlet point in filling chamber; Described valve opening cylinder is arranged on the top in described filling chamber, and is supported by fixed air cylinder support, and the piston rod of this valve opening cylinder is connected with valve rod by attaching parts, and in order to control spool valve opening or to close valve, spool is arranged on filling chamber bottom; Valve rod passes from guiding valve body, and the valve rod of guiding valve body to up-and-down movement play the guiding role.

3., according to steam turbine for nuclear power station low-pressure welding rotor weld seam automatic checkout equipment according to claim 1, it is characterized in that: described separatory pipeline comprises 6 separating tubes, described 6 separating tubes are all consistent with the vertical dimension of the junction of described point of flow container.

4. according to steam turbine for nuclear power station low-pressure welding rotor weld seam automatic checkout equipment according to claim 2, it is characterized in that: the part that filter, hand valve, diaphragm valve, feed tube, point flow container, separating tube, cleaning drain pipe, flexible pipe, flow-controlling gate, valve rod, filling chamber, guiding valve body, spool contact with liquid material all adopts homopolymerization type polypropylene or polytetrafluoroethylmaterial material.