Compensation exhaust flow limiting device for chemical nitrogen

Abstract

The utility model discloses a chemical nitrogen compensation exhaust flow limiting device which is used for limiting flow when external nitrogen is input into a chemical barrel and comprises a flow limiting ring. External nitrogen is communicated with the output end of the chemical barrel through an input pipeline, the input pipeline is connected with a gas release pipeline through a three-way pipeline, the flow limiting ring is arranged on the gas release pipeline, and one end of the gas release pipeline is arranged on the gas exhaust pipeline; and a discharging device is arranged at the output end of the chemical barrel so as to discharge chemicals in the chemical barrel. The device has the beneficial effects that when chemicals in the chemical barrel are output through the pneumatic pump, the chemicals can be input into the chemical barrel through external nitrogen, the situation that the chemical barrel is shrunken is avoided, in addition, when the power of the pneumatic pump is small, too little nitrogen enters the chemical barrel, the situation that too much nitrogen is exhausted through an exhaust pipeline is caused, and the safety of the chemical barrel is improved. Through the effect of the flow limiting ring, the discharge amount of nitrogen in the exhaust pipeline is reduced to a certain extent, and the effect of saving nitrogen is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical supply field especially, relate to a chemical nitrogen compensation exhaust flow limiting device. BACKGROUND

[0002] The chemical in the chemical barrel is extracted and used through the discharging equipment, in order to avoid the condition that the chemical barrel is deflated, need input corresponding nitrogen in the chemical barrel to maintain the balance inside and outside the chemical barrel,

[0003] But when the rate of chemical output by pneumatic pump changes, a small amount of nitrogen is discharged through the exhaust duct to balance the pressure balance inside and outside the chemical barrel, but when the power of pneumatic pump is too small, too much nitrogen is discharged through the exhaust duct. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problems in the prior art and provides a chemical nitrogen compensation exhaust flow limiting device.

[0005] Technical scheme: a chemical nitrogen compensation exhaust flow limiting device is provided, which is used for flow limiting when external nitrogen is input into a chemical barrel and comprises a flow limiting ring.

[0006] External nitrogen is communicated with the output end of the chemical barrel through an input pipeline, a gas bleeding pipeline is arranged on the input pipeline through a three-way pipeline connection, the flow limiting ring is arranged on the gas bleeding pipeline, and one end of the gas bleeding pipeline is arranged on the exhaust pipeline.

[0007] The output end of the chemical barrel is provided with a discharging device to discharge the chemicals in the chemical barrel.

[0008] Preferably, a pressure reducing valve is arranged on the input pipeline to adjust the input flow rate of external nitrogen.

[0009] Preferably, a safety valve is arranged in communication with the input pipeline to bleed pressure when the pressure in the input pipeline reaches a threshold value.

[0010] Preferably, the input pipeline is provided with a first pneumatic valve.

[0011] Preferably, the discharging device comprises a pneumatic pump, a discharging pipeline and a second pneumatic valve, the output end of the chemical barrel is communicated with the supply pipeline outside through the discharging pipeline, and the second pneumatic valve and the pneumatic pump are both arranged on the discharging pipeline.

[0012] Preferably, a liquid level monitor is arranged on the discharging pipeline.

[0013] Preferably, one end of the discharging pipeline communicated with the chemical barrel is inserted into the bottom of the chemical barrel.

[0014] Preferably, the flow limiting ring has a thickness of 1-3mm.

[0015] Preferably, the flow limiting ring has a middle circular perforated structure.

[0016] Beneficial effect: when the chemicals in the chemical barrel are output by the pneumatic pump, nitrogen can be input to the chemical barrel to avoid the chemical barrel from being deflated, in addition, when the power of the pneumatic pump is small, too little nitrogen enters the chemical barrel, which leads to too much nitrogen being discharged through the exhaust duct, the flow limiting ring reduces the nitrogen discharge amount in the exhaust duct to a certain extent, thereby saving nitrogen. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a structural schematic diagram of the utility model;

[0018] Fig. 2 is a flow limiting ring structure schematic diagram of the utility model.

[0019] Reference signs:

[0020] 1, flow limiting ring; 2, input pipeline; 3, chemical barrel; 4, air release pipeline; 5, exhaust pipeline; 6, pressure reducing valve; 7, safety valve; 8, first pneumatic valve; 9, pneumatic pump; 10, discharge pipeline; 11, supply pipeline; 12, second pneumatic valve; 13, liquid level monitor. DETAILED DESCRIPTION

[0021] In order to make the utility model technical scheme more clearly, the following will make further detailed description to the utility model by combining with the drawings and specific embodiments.

[0022] Embodiment 1

[0023] In order to make the utility model technical scheme more clearly, the following will make further detailed description to the utility model by combining with the drawings and specific embodiments.

[0024] For the purpose, technical scheme and advantages of the utility model, the following will be combined with the drawings of the utility model, the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment is a part of embodiment of the utility model, instead of all embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meaning of the person skilled in the art to which the utility model belongs. The "including" and similar words used in this paper mean that the elements or objects before the word cover the elements or objects listed after the word and its equivalent, and other elements or objects are not excluded.

[0025] In view of the problems in the prior art, combined with Figs. 1-2 A chemical nitrogen compensation exhaust flow limiting device for limiting flow when external nitrogen is input into a chemical barrel 3, comprising a flow limiting ring 1;

[0026] External nitrogen is communicated with the output end of the chemical barrel 3 through an input pipeline 2, a vent pipeline 4 is arranged on the input pipeline 2 through a three-way pipeline connection, the flow limiting ring 1 is arranged on the vent pipeline 4, and one end of the vent pipeline 4 is arranged on an exhaust pipeline 5.

[0027] The output end of the chemical barrel 3 is provided with a discharging device to discharge the chemicals in the chemical barrel 3.

[0028] In some preferred embodiments, the discharging device comprises a pneumatic pump 9, a discharging pipeline 10 and a second pneumatic valve 12, the output end of the chemical barrel 3 is communicated with an external supply pipeline 11 through the discharging pipeline 10, and the second pneumatic valve 12 and the pneumatic pump 9 are both arranged on the discharging pipeline 10.

[0029] Specifically, when the pneumatic pump 9 of the discharging device is opened, the chemicals in the chemical barrel 3 are output, the second pneumatic valve 12 is opened, and the chemicals at the output end are output to the supply pipeline 11 through the second pneumatic valve 12.

[0030] When the power of the pneumatic pump 9 is reduced, less chemicals are extracted from the chemical barrel 3, the amount of nitrogen discharged from the exhaust pipeline 5 is reduced through the action of the flow limiting ring 1, and the waste of nitrogen is avoided.

[0031] In some preferred embodiments, a pressure reducing valve 6 is arranged on the input pipeline 2 to adjust the input flow rate of external nitrogen, and the flow of nitrogen input can be manually adjusted through the pressure reducing valve 6.

[0032] In some preferred embodiments, the input pipe 2 is provided with a safety valve 7 for pressure relief when the pressure in the input pipe 2 reaches a threshold value, in order to improve safety and avoid excessive nitrogen pressure in the input pipe 2, which may cause the input pipe 2 to rupture.

[0033] In some preferred embodiments, the input pipe 2 is provided with a first pneumatic valve 8.

[0034] In some preferred embodiments, a control unit (not shown in the figure) is further provided, which is connected with the first pneumatic valve 8 and the pneumatic pump 9, so that the first pneumatic valve 8 is linked with the pneumatic pump 9 when the pneumatic pump 9 is opened, and the first pneumatic valve 8 is opened in advance by the control unit to allow nitrogen to enter the input pipe 2 before the pneumatic pump 9 is opened, thereby avoiding the situation that the pneumatic pump 9 is opened first and then nitrogen is input to deflate the chemical barrel 3.

[0035] In some preferred embodiments, a liquid level monitor 13 is provided on the output pipe 10, which is placed in the position where the chemical flows downward in the vertical direction, so that the chemical can be monitored when the chemical barrel 3 is drained.

[0036] In some preferred embodiments, the output pipe 10 is inserted into the bottom of the chemical barrel 3, which facilitates the complete extraction of the chemical in the chemical barrel 3.

[0037] In some preferred embodiments, the thickness of the flow limiting ring 1 is 1-3 mm.

[0038] In some preferred embodiments, the flow limiting ring 1 has a middle circular perforated structure.

[0039] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A chemical nitrogen compensation exhaust flow limiting device, used to limit the flow of external nitrogen gas into a chemical container, characterized in that, Including current limiting loop; External nitrogen gas is connected to the output end of the chemical tank through an input pipe. A vent pipe is connected to the input pipe via a T-junction. A flow-limiting ring is located on the vent pipe, and one end of the vent pipe is located on an exhaust pipe. The chemical drum is equipped with a discharge device at its output end to discharge the chemicals inside.

2. The chemical nitrogen compensation exhaust flow limiting device according to claim 1, characterized in that, The input pipeline is equipped with a pressure reducing valve to regulate the flow rate of external nitrogen gas.

3. The chemical nitrogen compensation exhaust flow limiting device according to claim 1, characterized in that, The input pipeline is connected to a safety valve, which is used to release pressure when the pressure in the input pipeline reaches a threshold.

4. The chemical nitrogen compensation exhaust flow limiting device according to claim 1, characterized in that, The input pipe is equipped with a first pneumatic valve.

5. A chemical nitrogen compensation exhaust flow limiting device according to claim 1, characterized in that, The discharge device includes a pneumatic pump, a discharge pipe, and a second pneumatic valve. The output end of the chemical drum is connected to an external supply pipe through the discharge pipe. The second pneumatic valve and the pneumatic pump are both located on the discharge pipe.

6. A chemical nitrogen compensation exhaust flow limiting device according to claim 5, characterized in that, The discharge pipe is equipped with a liquid level monitor.

7. A chemical nitrogen compensation exhaust flow limiting device according to claim 5, characterized in that, The end of the discharge pipe that connects to the chemical tank is inserted into the bottom of the chemical tank.

8. A chemical nitrogen compensation exhaust flow limiting device according to claim 1, characterized in that, The thickness of the current-limiting ring is 1-3 mm.

9. A chemical nitrogen compensation exhaust flow limiting device according to claim 1, characterized in that, The current-limiting ring has a central circular perforated structure.

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