阅读说明：本技术 一种灌装用防溢出装置及方法 (Anti-overflow device and method for filling ) 是由 江秋盛 于 2019-11-07 设计创作，主要内容包括：本发明涉及灌装技术领域,公开了一种灌装用防溢出装置,与灌装组件电连接,包括氮气供应装置和与所述氮气供应装置连通的溢出检测模块,向待灌装容器内通高压氮气可以快速的使容器内充满氮气,排除氧气,减少易燃易爆化工液体在灌装过程中爆炸的可能,低压通气管打开时,在充气管的出气端没有接触到容器内液面时,管内气压保持不变,一旦充气管的出气端与液面接触,既对氮气产生阻碍,从而市场管内气压增大,触发气压检测模块发出报警信号,驱动灌装组件停止灌装,安全性高,通用性强。(The invention relates to the technical field of filling, and discloses an anti-overflow device for filling, which is electrically connected with a filling assembly and comprises a nitrogen supply device and an overflow detection module communicated with the nitrogen supply device, wherein high-pressure nitrogen is introduced into a container to be filled, so that the container can be quickly filled with nitrogen, oxygen is discharged, and the possibility of explosion of flammable and explosive chemical liquid in the filling process is reduced.)

1. An anti-overflow device for filling is electrically connected with a filling assembly (1), and is characterized by comprising a nitrogen supply device (2) and an overflow detection module (3) communicated with the nitrogen supply device (2);

the nitrogen supply device (2) comprises a nitrogen generator (21), a high-pressure vent pipeline (22) and a low-pressure vent pipeline (23), the overflow detection module (3) comprises an inflation pipe (31) and an air pressure detection module (32) arranged in the inflation pipe (31), and the nitrogen generator (21) respectively conveys nitrogen to the air inlet end of the inflation pipe (31) through the high-pressure vent pipeline (22) and the low-pressure vent pipeline (23);

the air outlet end of the air inflation tube (31) is arranged in the container (4) to be filled, and the air pressure detection module (32) is electrically connected with the filling assembly (1);

after the nitrogen generator (21) is started, when the high-pressure vent pipeline (22) is opened and the low-pressure vent pipeline (23) is closed, the inflation pipe (31) is used for introducing high-pressure nitrogen into the container (4) to be filled;

when the low-pressure ventilation pipeline (23) is opened, the high-pressure ventilation pipeline (22) is closed, and when the liquid level in the container (4) to be filled coincides with the air outlet end of the air inflation pipe (31), the air pressure in the air inflation pipe (31) rises, and the air pressure detection module (32) sends out an alarm signal;

and the filling assembly (1) stops filling after receiving the alarm signal.

2. The overfill prevention device for filling according to claim 1, wherein the high-pressure vent line (22) comprises a first inlet pipe (221), a first control valve (222), a first pressure regulating valve (223) and a first butterfly valve (224), which are communicated in sequence, and a first outlet pipe (225);

the low-pressure ventilation pipeline (23) comprises a second air inlet pipe (231), a second control valve (232), a second pressure regulating valve (233), a second butterfly valve (234) and a second air outlet pipe (235) which are communicated in sequence;

the first air inlet pipe (221) is communicated with the second air inlet pipe (231) and then communicated with the nitrogen supply device (2), and the first air outlet pipe (225) is communicated with the second air outlet pipe (235) and then communicated with the air inlet end of the inflation pipe (31).

3. The overfill prevention device for filling according to claim 2, wherein a first flow detection pipe (226) is connected between the first control valve (222) and the first pressure regulating valve (223), and a first flow detection meter (2261) is disposed on the first flow detection pipe (226);

a second flow detection pipe (236) is communicated between the second control valve (232) and the second pressure regulating valve (233), and a second flow detector (2361) is arranged on the second flow detection pipe (236).

4. The overflow preventing device for filling according to claim 3, wherein a first pressure detecting tube (227) is arranged between the first butterfly valve (224) and the first air outlet tube (225), and a first pressure gauge (2271) is arranged on the first pressure detecting tube (227) in a communicating manner;

the second butterfly valve (234) with intercommunication is provided with second pressure detection pipe (237) between second outlet duct (235), the intercommunication is provided with second pressure gauge (2371) on the second pressure detection pipe (237).

5. An overflow-preventing method for filling, which is characterized by comprising the following steps:

s1, fixedly arranging the inflation tube (31) at the bottom of the container (4) to be filled;

s2, starting the nitrogen generator (21), closing the low-pressure ventilation pipeline (23) and opening the high-pressure ventilation pipeline (22);

s3, opening the low-pressure ventilation pipeline (23), closing the high-pressure ventilation pipeline (22), and continuously ventilating the inflation pipe (31);

s4, fixing the air outlet end of the air filling pipe (31) at the position of the maximum liquid level in the container (4) to be filled, and starting an air pressure detection module (32);

s5, starting the filling assembly (1) to fill;

when the liquid level in the container (4) to be filled coincides with the air outlet end of the air inflation tube (31), the air pressure in the air inflation tube (31) rises, and the air pressure detection module (32) sends an alarm signal when detecting that the air pressure in the air inflation tube (31) is higher than a preset value;

and the filling assembly (1) stops filling after receiving the alarm signal.

6. The overfill prevention method for filling according to claim 5, wherein said step S2 comprises:

s21, starting the nitrogen generator (21);

s22, opening the first control valve (222) and the first butterfly valve (224), and closing the second control valve (232);

and S23, adjusting the first pressure regulating valve (223) to enable the inflation pipe (31) to output high-pressure nitrogen.

7. The overfill prevention method for filling according to claim 6, wherein said step S3 comprises:

s31, starting the nitrogen generator (21);

s32, opening the second control valve (232) and the second butterfly valve (234), and closing the first control valve (222);

and S33, adjusting the second pressure regulating valve (233) to enable the inflation tube (31) to output low-pressure nitrogen.

8. The overfill prevention method for filling according to claim 7, wherein in said step S33, said gas filling pipe (31) outputs low-pressure nitrogen gas for 2 min.

9. The overfill prevention method for filling according to claim 7, wherein said step S5 comprises:

when the air pressure in the inflation tube (31) rises, the air pressure detection module (32) sends the alarm signal when detecting that the air pressure in the inflation tube (31) is continuously higher than the preset value of the air pressure for 0.5 s.

Technical Field

The invention relates to the technical field of filling, in particular to an anti-overflow device and an anti-overflow method for filling.

Background

In the production and manufacturing process of liquid chemical products in chemical industry, a filling production line is used in the final stage, a container to be filled is conveyed on the production line by a driving belt, and when the container passes through a filling machine arranged on the production line, a filling head on the filling machine extends into the container to be filled to infuse chemical liquid.

Because treat that the filling container has certain volume, need hold the filling process, prevent that chemical liquid from spilling over, present filling anti-overflow goes out the device most and realizes the anti-overflow through comparing chemical liquid and treating the filling container colour difference, treats the colour change that the container opening part of filling container produced through the monitoring promptly, judges whether the filling of chemical liquid is accomplished.

However, the anti-overflow monitoring device has poor universality, for example, some chemical liquid belongs to flammable and toxic dangerous goods, the pipe orifice of a container to be filled is small, the liquid level in the tank rises obviously and quickly in the later period of filling, the chemical liquid cannot overflow due to the color change, and related anti-explosion and anti-combustion measures are also lacked, so that the safety is not high.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide an overflow preventing device and method for filling, which have the advantages of strong versatility and high safety.

The above object of the present invention is achieved by the following technical solutions:

an overflow preventing device for filling is electrically connected with a filling assembly and comprises a nitrogen supply device and an overflow detecting module communicated with the nitrogen supply device;

the nitrogen supply device comprises a nitrogen generator, a high-pressure vent pipeline and a low-pressure vent pipeline, the overflow detection module comprises an inflation pipe and an air pressure detection module arranged in the inflation pipe, and the nitrogen generator respectively conveys nitrogen to the air inlet end of the inflation pipe through the high-pressure vent pipeline and the low-pressure vent pipeline;

the air outlet end of the inflation tube is arranged in the container to be filled, and the air pressure detection module is electrically connected with the filling assembly;

after the nitrogen generator is started, when the high-pressure vent pipeline is opened and the low-pressure vent pipeline is closed, the inflation pipe is used for introducing high-pressure nitrogen into the container to be filled;

when the low-pressure vent pipeline is opened, the high-pressure vent pipeline is closed, and the liquid level in the container to be filled is superposed with the air outlet end of the inflation pipe, the air pressure in the inflation pipe is increased, and the air pressure detection module sends out an alarm signal;

and the filling assembly stops filling after receiving the alarm signal.

Through above-mentioned technical scheme, to treating to lead to high-pressure nitrogen gas in the filling container can be quick make the container in full of nitrogen gas, get rid of oxygen, reduce the possibility of inflammable and explosive chemical industry liquid exploding at the filling in-process, when the low pressure breather pipe is opened, when the end of giving vent to anger at the gas tube does not contact the container in the liquid level, intraductal atmospheric pressure remains unchanged, in case the end of giving vent to anger of gas tube contacts with the liquid level, both produce the hindrance to nitrogen gas, thereby the intraductal atmospheric pressure of market increases, trigger atmospheric pressure detection module and send alarm signal, drive filling subassembly stop the filling, therefore, the.

The invention is further configured to: the high-pressure ventilation pipeline comprises a first air inlet pipe, a first control valve, a first pressure regulating valve, a first butterfly valve and a first air outlet pipe which are sequentially communicated;

the low-pressure vent pipeline comprises a second air inlet pipe, a second control valve, a second pressure regulating valve, a second butterfly valve and a second air outlet pipe which are communicated in sequence;

the first air inlet pipe is communicated with the second air inlet pipe and then communicated with the nitrogen supply device, and the first air outlet pipe is communicated with the second air outlet pipe and then communicated with the air inlet end of the inflation pipe.

Through the technical scheme, the high-low pressure two-way channel is convenient to distinguish and is beneficial to control and maintenance.

The invention is further configured to: a first flow detection pipe is arranged between the first control valve and the first pressure regulating valve in a communication manner, and a first flow detector is arranged on the first flow detection pipe;

and a second flow detection pipe is arranged between the second control valve and the second pressure regulating valve in a communication manner, and a second flow detector is arranged on the second flow detection pipe.

Through the technical scheme, the first flow detection meter and the second flow detection meter can facilitate workers to observe working conditions in real time.

The invention is further configured to: a first pressure detection pipe is communicated between the first butterfly valve and the first air outlet pipe, and a first pressure gauge is communicated and arranged on the first pressure detection pipe;

the second butterfly valve with the intercommunication is provided with the second pressure detection pipe between the second outlet duct, the intercommunication is provided with the second pressure gauge on the second pressure detection pipe.

An overflow-preventing method for filling, which is characterized by comprising the following steps:

s1, fixedly arranging the inflation tube at the bottom of the container to be filled;

s2, starting the nitrogen generator, closing a low-pressure ventilation pipeline and opening a high-pressure ventilation pipeline;

s3, opening the low-pressure ventilation pipeline, closing the high-pressure ventilation pipeline, and continuously ventilating the inflation pipe;

s4, fixing the air outlet end of the air inflation tube at the position of the maximum liquid level in the container to be filled, and starting an air pressure detection module;

s5, starting the filling assembly for filling;

when the liquid level in the container to be filled is superposed with the air outlet end of the inflation tube, the air pressure in the inflation tube rises, and the air pressure detection module sends an alarm signal when detecting that the air pressure in the inflation tube is higher than a preset value;

and the filling assembly stops filling after receiving the alarm signal.

Through the technical scheme, high pressure ventilation pipeline cooperation sets up and to be full of whole container with nitrogen gas that can be quick at the gas tube of treating filling container bottom, open low pressure ventilation pipeline, it can get rid of oxygen totally to last ventilating behind the closed high pressure ventilation pipeline, further reduce oxygen content, when starting the filling, treat the liquid level in the filling container and rise gradually, end and liquid level contact give vent to anger when the gas tube, both produce the hindrance to nitrogen gas, thereby the intraductal atmospheric pressure of market increases, trigger atmospheric pressure detection module and send alarm signal, drive filling subassembly stops the filling, therefore, the safety is high, and the commonality is strong.

The invention is further configured to: the step S2 includes:

s21, starting the nitrogen generator;

s22, opening the first control valve and the first butterfly valve, and closing the second control valve at the same time;

and S23, adjusting the first pressure regulating valve to enable the inflation tube to output high-pressure nitrogen.

The invention is further configured to: the step S3 includes:

s31, starting the nitrogen generator;

s32, opening the second control valve and the second butterfly valve, and closing the first control valve at the same time;

and S33, adjusting the second pressure regulating valve to enable the inflation tube to output low-pressure nitrogen.

Through the technical scheme, the high-low pressure two-way channel is convenient to distinguish and is beneficial to control and maintenance.

The invention is further configured to: in the step S33, the gas filling pipe outputs low-pressure nitrogen gas for 2 min.

Through the technical scheme, the air in the container to be filled can be emptied as much as possible.

The invention is further configured to: the step S5 includes:

when the air pressure in the inflation tube rises, the air pressure detection module sends the alarm signal when detecting that the air pressure in the inflation tube is continuously higher than the preset value of the air pressure for 0.5 s.

Through above-mentioned technical scheme, can prevent to discharge the influence that the atmospheric pressure fluctuation that the jar air produced produces the atmospheric pressure detection module because of the liquid filling.

Compared with the prior art, the invention has the beneficial effects that:

through leading to high-pressure nitrogen gas in can be quick messenger's container to waiting to fill the container and being full of nitrogen gas, get rid of oxygen, reduce the possibility of inflammable and explosive chemical industry liquid exploding at the filling in-process, when the low pressure breather pipe was opened, when the end of giving vent to anger of gas tube did not contact the container in the liquid level, intraductal atmospheric pressure remains unchanged, in case the end of giving vent to anger of gas tube contacts with the liquid level, both produced the hindrance to nitrogen gas, thereby the increase of atmospheric pressure in the market pipe, trigger atmospheric pressure detection module and send alarm signal, drive filling subassembly stops the filling, therefore, the security.

Drawings

FIG. 1 is a schematic diagram of the overall connection relationship according to the embodiment of the present invention;

FIG. 2 is a schematic structural view of a nitrogen gas supply apparatus according to an embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of the spill detection module and a container to be filled in accordance with an embodiment of the present invention;

fig. 4 is a flowchart of a filling method according to an embodiment of the present invention.

Reference numerals: 1. a filling assembly; 2. a nitrogen gas supply device; 21. a nitrogen generator; 22. a high pressure vent line; 221. a first intake pipe; 222. a first control valve; 223. a first pressure regulating valve; 224. a first butterfly valve; 225. a first air outlet pipe; 226. a first flow rate detecting tube; 2261. a first flow detector; 227. a first pressure detecting tube; 2271. a first pressure gauge; 23. a low pressure vent line; 231. a second intake pipe; 232. a second control valve; 233. a second pressure regulating valve; 234. a second butterfly valve; 235. a second air outlet pipe; 236. a second flow rate detecting tube; 2361. a second flow rate detector; 237. a second pressure detecting tube; 2371. a second pressure gauge; 3. an overflow detection module; 31. an inflation tube; 32. an air pressure detection module; 4. and (4) filling the container.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

An overflow-preventing device for filling, as shown in fig. 1, is electrically connected with a filling assembly 1, and comprises a nitrogen supply device 2 and an overflow detection module 3 communicated with the nitrogen supply device 2. The nitrogen supply device 2 includes a nitrogen generator 21 and a high pressure vent line 22 and a low pressure vent line 23.

As shown in fig. 2, the high pressure ventilation line 22 includes a first air inlet pipe 221, a first control valve 222, a first pressure regulating valve 223, a first butterfly valve 224 and a first air outlet pipe 225 which are communicated in sequence; the low pressure ventilation line 23 includes a second inlet pipe 231, a second control valve 232, a second pressure regulating valve 233, a second butterfly valve 234, and a second outlet pipe 235, which are sequentially communicated. The first air inlet pipe 221 and the second air inlet pipe 231 are communicated and then communicated with the nitrogen supply device 2, and the first air outlet pipe 225 and the second air outlet pipe 235 are communicated and then communicated with the air inlet end of the inflation pipe 31, so that the high-pressure channel and the low-pressure channel are convenient to distinguish, and control and maintenance are facilitated.

The nitrogen generator 21 can adopt a nitrogen bottle, is communicated with the high-pressure vent pipeline 22 and the low-pressure vent pipeline 23 through air pipes, and conveys nitrogen to the air inlet end of the inflation pipe 31, the overflow detection module 3 comprises an air pressure detection module 32 arranged in the inflation pipe 31, and the air pressure detection module 32 is electrically connected with the filling assembly 1.

Before filling, the air outlet end of the air tube 31 is placed in the container 4 to be filled, and the air tube 31 can be a corrugated tube and can be kept still after adjusting the shape and the position of the air tube.

Referring to fig. 2 and 3, after the nitrogen generator 21 is started, when the high-pressure vent line 22 is opened and the low-pressure vent line 23 is closed, the gas filling pipe 31 fills the high-pressure nitrogen into the container 4 to be filled, so that oxygen can be rapidly removed, and the possibility of explosion of flammable and explosive chemical liquid in the filling process is reduced.

When the lp vent is opened and the hp vent line 22 is closed, oxygen may be purged again to further reduce oxygen content.

Then the filling assembly 1 is started, at the moment, the plastic floating plate rises along with the liquid level of the liquid in the container 4 to be filled, when the air outlet end of the air inflation tube 31 is not contacted with the liquid level in the container, the air pressure in the air inflation tube is kept unchanged, once the air outlet end of the air inflation tube 31 is contacted with the liquid level, the nitrogen is blocked, so that the air pressure in the air inflation tube 31 is increased, the air pressure detection module 32 is triggered to send out an alarm signal, the filling assembly 1 is driven to stop filling, the safety is high, and the universality is.

The output of the air pressure detection module 32 can be analog quantity, the preset value can be set by a comparison circuit in the prior art, and the operational amplifier in the comparison circuit compares the high and low voltage levels, which are alarm signals, and then the switch component of the filling assembly 1 can be controlled by the high and low voltage levels, so that the filling assembly 1 is powered on or powered off, and automatic control is realized.

As shown in fig. 2, a first flow rate detecting tube 226 is connected and fixed between the first control valve 222 and the first pressure regulating valve 223, a first flow rate detector 2261 is fixed on the first flow rate detecting tube 226, a second flow rate detecting tube 236 is connected and fixed between the second control valve 232 and the second pressure regulating valve 233, and a second flow rate detector 2361 is fixed on the second flow rate detecting tube 236. First pressure detection pipe 227 is arranged between first butterfly valve 224 and the first outlet pipe 225 in a communicating mode, first pressure detection pipe 227 is provided with first pressure gauge 2271 in the communicating mode, second pressure detection pipe 237 is arranged between second butterfly valve 234 and the second outlet pipe 235 in the communicating mode, and second pressure gauge 2371 is arranged on second pressure detection pipe 237 in the communicating mode. The working condition can be conveniently observed by the working personnel in real time.

An anti-overflow method for filling, as shown in fig. 4, comprises the following steps:

s1, fixedly arranging the inflation tube 31 at the bottom of the container 4 to be filled;

s2, starting the nitrogen generator 21, closing the low pressure vent line 23, and opening the high pressure vent line 22;

s3, opening the low-pressure vent pipeline 23, closing the high-pressure vent pipeline 22, and continuously ventilating the inflation pipe 31;

s4, fixing the air outlet end of the air filling pipe 31 at the position of the maximum liquid level in the container 4 to be filled, and starting the air pressure detection module 32;

s5, starting the filling assembly 1 to carry out filling;

when the liquid level in the container 4 to be filled coincides with the air outlet end of the air inflation tube 31, the air pressure in the air inflation tube 31 rises, and the air pressure detection module 32 sends an alarm signal when detecting that the air pressure in the air inflation tube 31 is higher than a preset value;

and the filling assembly 1 stops filling after receiving the alarm signal.

High-pressure ventilation pipeline 22 cooperation sets up and is full of whole container with nitrogen gas that inflation tube 31 in treating 4 bottoms of filling container can be quick, open low-pressure ventilation pipeline 23, it can get rid of oxygen totally to last ventilating behind the closed high-pressure ventilation pipeline 22, further reduce oxygen content, during the start-up filling, treat the liquid level in the filling container 4 and rise gradually, end and liquid level contact give vent to anger when inflation tube 31, both produce the hindrance to nitrogen gas, thereby the intraductal atmospheric pressure of market increases, trigger atmospheric pressure detection module 32 and send alarm signal, drive filling subassembly 1 stops the filling, therefore, the safety is high, and the commonality is strong.

Step S2 includes:

s21, starting the nitrogen generator 21;

s22, opening the first control valve 222 and the first butterfly valve 224, while closing the second control valve 232;

s23, the first pressure regulating valve 223 is adjusted to make the gas filling pipe 31 output high pressure nitrogen.

Step S3 includes:

s31, starting the nitrogen generator 21;

s32, opening the second control valve 232 and the second butterfly valve 234 while closing the first control valve 222;

s33, the second pressure regulating valve 233 is adjusted to make the gas filling pipe 31 output low pressure nitrogen.

The high-low pressure two-way channel is convenient to distinguish and is beneficial to control and maintenance.

In step S33, the gas filling pipe 31 outputs low-pressure nitrogen gas for 2 min. The air in the container 4 to be filled can be evacuated as much as possible.

Step S5 includes: when the air pressure in the air tube 31 rises, the air pressure detection module 32 sends out an alarm signal when detecting that the air pressure in the air tube 31 is continuously higher than the preset value of the air tube for 0.5 s. The influence of the air pressure fluctuation generated by the air in the liquid filling and discharging tank on the air pressure detection module 32 can be prevented.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.