CN105217552B

CN105217552B - liquid material filling control device and method

Info

Publication number: CN105217552B
Application number: CN201410317481.9A
Authority: CN
Inventors: 李红果; 叶岷; 崔岩; 石卓栋; 化北
Original assignee: China Academy of Launch Vehicle Technology; Beijing Institute of Structure and Environment Engineering; Beijing Aerostandard Technology Co Ltd
Current assignee: China Academy of Launch Vehicle Technology; Beijing Institute of Structure and Environment Engineering; Beijing Aerostandard Technology Co Ltd
Priority date: 2014-07-04
Filing date: 2014-07-04
Publication date: 2018-07-06
Anticipated expiration: 2034-07-04
Also published as: CN105217552A

Abstract

The invention relates to a liquid material filling control device and method. It includes a filling head (1), a feed pipe (6) and a storage tank (3); a feed valve (7) is installed in the middle of the feed pipe (6), and one end of the feed pipe (6) is connected to the filling head ( 1) connection, the other end inputs the material to be filled, and the feed valve (7) controls the flow and cut-off of the material in the feed pipe (6); between the flange (5) and the feed valve (7) position, there is a branch on the feeding pipe (6), which is connected with the material storage cylinder (3) through the threaded pipe (4); the material storage cylinder (3) includes the air cavity (A) and the material cavity (B ) two chambers, which are sealed and isolated by the piston (2), the air chamber (A) is connected with the control valve (9) through the air pipe (8), the material chamber (B) communicates with the feed pipe (6); the control valve (9) ) to introduce or cut off the atmosphere or atmosphere of industrial instruments. The invention improves the speed and precision of the filling process, simplifies the filling process and reduces material waste.

Description

Liquid material filling control device and method

Technical field

The present invention relates to a kind of liquid filling devices suitable for fields such as medicine, food, chemical industry, and in particular to Yi Zhongke To realize that liquid is with pressure filling and fills by gravity alternate liquid material filling control device.

Background technology

The liquid quantitative filling equipment in entire filling and package field at present is generally used with pressure filling and is filled by gravity two kinds Canning means.So-called with pressure filling, pipeline is directly connected with filling head, and material is fed directly to filling head by charging pump, Therefore it is with pressure it is filling can ensure quick filling speed, but due to the fluctuation of feed pressure, especially for multiple filling For the equipment of head, when after some filling head is closed, pipeline pressure being caused to fluctuate, the flow for leading to other filling heads is random The fluctuation of rule property, has seriously affected the filling accuracy of equipment.So-called to fill by gravity, material is first passed through in pipeline to hopper, so Hopper is connect by pipeline with filling head afterwards, filling pressure depend primarily on material density and it is filling when hopper in material liquid level Height, for the equipment of multiple filling heads, after filling head is closed, generated pressure oscillation can feed back to hopper It is interior, since the volume of hopper is sufficiently large so that material position fluctuation is smaller caused by pressure oscillation to ignore, thus hopper acts as The suction container of pressure oscillation ensure that the basicly stable of material pressure and flow, thus fill by gravity solve it is with pressure filling Pressure oscillation leads to the shortcomings that filling accuracy bad control, but the filling speed to fill by gravity is low, and the general body of hopper used Product is big, not easy cleaning, be easy to cause material pollution.

Invention content

It can realize that liquid is with pressure filling and fills by gravity alternate control device the purpose of the present invention is to provide one kind, The filling control device combines the advantages of filling speed with pressure is easy to control soon with the precision that fills by gravity, that is, improves filling speed Degree, in turn ensures filling accuracy.

The present invention is a kind of liquid material filling control device, wherein：Including filling head, feed pipe and accumulator；Charging It is connect among pipe equipped with inlet valve, feed pipe one end with filling head, other end input needs filling material, inlet valve control object Expect the circulation in feed pipe and block；Position between flange and inlet valve, sets that there are one branch, this branches on feed pipe It is connect with accumulator by screwed pipe；Accumulator includes air cavity and material two chambers of chamber, they are isolated by piston seal, and air cavity leads to It crosses tracheae to connect with control valve, material chamber is communicated with feed pipe；Industrial instrument general mood or air are either blocked in control valve importing.

A kind of liquid material filling control device as described above, wherein：Control valve includes two stomatas:First stomata and Second stomata, the two stomatas are respectively communicated with industrial instrument general mood or air；Control valve is by controlling tracheae and the first stomata Connecting and blocking with the second stomata two stomatas, control air cavity be connected with industrial instrument general mood or air and air cavity from Body is closed.

A kind of liquid material filling control method, wherein, it is filling using liquid material as described in claim 1 or 2 The filling material of control device, also, include the following steps：

Step S1, filling head is closed, control valve control air cavity and atmosphere, and inlet valve conducting is with pressure Material into pan feeding chamber, and pushes piston to be moved to the direction that air cavity reduces by inlet valve, and material chamber increase, air cavity reduces, object Accumulator is full of by material, and then control valve control air cavity itself is closed；

Step S2, filling head is opened, and progress big flow is filling, and material with pressure is flowed into the packing materials such as bucket, tank；

Step S3, judge whether big flow is filling to finish, if finished, carry out step S4；

Step S4, inlet valve is closed, and carries out that small flow is filling, control valve control air cavity and air or the industrial instrument of stabilization Table general mood is connected, and material is pushed by gravity or/and industrial instrument general mood pressure, by material chamber, through filling head, flows into the packets such as bucket, tank It fills in object；

Step S5, judge whether small flow is filling to finish, if finished, carry out step S6；

Step S6, after pouring process, filling head is closed.

Liquid material filling control device proposed by the present invention not only increases the speed and precision of pouring process, and Hopper is eliminated from structure so that equipment operation flow simplifies filling process flow there is no the step for cleaning hopper, Reduce material waste.

Description of the drawings

Fig. 1 is the structure diagram of liquid material filling control device proposed by the invention；

Fig. 2 is the work flow diagram of liquid material filling control device proposed by the invention.

Wherein, 1, filling head, 2, piston, 3, accumulator, 4, screwed pipe, 5, flange, 6, feed pipe, 7, inlet valve, 8, gas Pipe, 9, control valve, A, air cavity, B, material chamber, P1, the first stomata of control valve, P2, the second stomata of control valve.

Specific embodiment

The present invention is described further with reference to the accompanying drawings and examples.

Liquid quantitative filling equipment at present, in order to meet the double requirements of filling speed and filling accuracy, mostly using double The filling pattern of speed：First using big flow high-speed canning, closing big flow is filling before filling amount reaches requirement filling amount, cuts It is filling to change to small flow, reaches high speed, high-precision requirement.Therefore, thinking of the invention is：With reference to the spy of aforesaid way Point when filling apparatus is when big flow is filling, using with pressure filling, to improve filling speed, when small flow is filling, is converted into Fill by gravity or with the similar voltage-stabilizing filling that fills by gravity, to ensure filling accuracy.

As shown in Figure 1, liquid material filling control device proposed by the invention includes filling head 1, feed pipe 6 and storing Cylinder 3.Equipped with inlet valve 7 among feed pipe 6, it is connect with filling head 1 and accumulator by flange 5, passes through screwed pipe with accumulator 3 4 connections.The break-make of inlet valve 7 with circulation of the control material in feed pipe 6 and can block.Accumulator 3 includes air cavity A and material chamber Two chambers of B, they are sealed off by piston 2, and air cavity A is connected by tracheae 8 and control valve 9, and material chamber B is connect with feed pipe 6. Control valve 9 has two stomatas of P1 and P2, the two stomatas can connect industrial instrument general mood or air.Control valve 9 passes through control It the connection of two stomatas of tracheae 8 and P1 and P2 processed and blocks, air cavity A can be controlled to be connected with industrial instrument general mood or air And air cavity A itself is closed.When filling, material arrow direction flowing as shown in Figure 1, filling head 1 is controlled whether to bucket, tank etc. Fill material in packing material.

It first opens inlet valve to be filled accumulator, after accumulator is filled, opens filling head and carry out big flow filling Dress when filling amount reaches small flow setting value, closes inlet valve, and the stomata of accumulator leads to air or the constant instrument of positive pressure General mood, it is filling to carry out small flow, is finished until filling.

Fig. 2 is the work flow diagram of liquid material filling control device proposed by the invention.At first, filling head 1 is to close.In step sl, control valve 9 controls air cavity A and atmosphere, inlet valve 7 to be connected, material with pressure by into Expect valve 7 into pan feeding chamber B, and piston 2 pushed to be moved to the direction that air cavity A reduces, material chamber B increases, air cavity A reduces, material by Accumulator 3 is full of, and then control valve 9 controls air cavity A itself closed.In step s 2, filling head 1 is opened, material with pressure such as Fig. 1 Direction shown in arrow is flowed into the packing materials such as bucket, tank, and at this moment pouring process is with pressure filling, and material is pushed by pressure, flowing Speed is fast, can realize big flow Quick-filling, improves filling speed.In step s3, control system can according to weight or Person's liquid level etc. judges whether big flow is filling and finishes that the filling amount of big flow is usually the 95%-99% of entire filling amount. In step S4, inlet valve 7 is closed, control valve 9 control air cavity A and the industrial instrument general mood of air or stabilization conducting, material by The pressure of gravity or/and stabilization pushes, and by material chamber B, through filling head 1, flows into the packing materials such as bucket, tank, material flow is slow, fills Dress process by it is with pressure it is filling be converted to fill by gravity or with the similar voltage-stabilizing filling that fills by gravity, to ensure filling essence Degree.In step S5 and S6, after pouring process, filling head is closed, and then control flow jumps to step S1, so again It can carry out next time filling.

The embodiment of the present invention is explained in detail above, the above embodiment is only most highly preferred embodiment of the invention, It, within the knowledge of a person skilled in the art, can also be but the present invention is not limited to above-described embodiment It is made a variety of changes under the premise of not departing from present inventive concept.

Claims

1. A liquid material filling control device, characterized in that: it comprises a filling head (1), a feed pipe (6) and a material storage cylinder (3); a feed valve ( 7), one end of the feed pipe (6) is connected to the filling head (1), and the other end inputs the material to be filled, and the feed valve (7) controls the flow and cut-off of the material in the feed pipe (6); At the position between the flange (5) and the feed valve (7), there is a branch on the feed pipe (6), which is connected to the storage cylinder (3) through a threaded pipe (4); The cylinder (3) contains two chambers, the air chamber (A) and the material chamber (B), which are sealed and isolated by the piston (2), the air chamber (A) is connected with the control valve (9) through the air pipe (8), and the material chamber ( B) It communicates with the feed pipe (6); the control valve (9) introduces or cuts off the wind or atmosphere of the industrial instrument.

2. A liquid material filling control device as claimed in claim 1, characterized in that: the control valve (9) comprises two air holes: the first air hole (P1) and the second air hole (P2), the two The air holes are respectively connected to the air or atmosphere of the industrial instrument; the control valve (9) controls the air chamber (A) and the industrial The instrument air or atmosphere is connected and the air chamber (A) is self-sealed.

3. A liquid material filling control method, characterized in that, filling the material with the liquid material filling control device as claimed in claim 1 or 2, and comprising the following steps:

Step S1, the filling head (1) is in the closed state, the control valve (9) controls the connection between the air cavity (A) and the atmosphere, the feed valve (7) is turned on, and the pressurized material enters the feed through the feed valve (7). cavity (B), and pushes the piston (2) to move in the direction that the air cavity (A) shrinks, the material cavity (B) increases, the air cavity (A) shrinks, the material will fill the material storage cylinder (3), and then control The valve (9) controls the self-tightness of the air cavity (A);

Step S2, the filling head (1) is opened for large-flow filling, and the pressurized material flows into barrels and tanks;

Step S3, judging whether the filling of the large flow rate is completed, if it is completed, proceed to step S4;

Step S4, the feed valve (7) is closed for filling with a small flow rate, the control valve (9) controls the conduction between the air chamber (A) and the atmosphere or stable industrial instrument air, and the material is pushed by gravity or/and industrial instrument air pressure , from the material cavity (B), through the filling head (1), and flow into barrels and tanks;

Step S5, judging whether the filling of the small flow rate is completed, and if so, proceed to step S6;

Step S6, when the filling process is completed, the filling head (1) is closed.