Vacuum degasser with automatic control system

Abstract

The utility model belongs to the technical field of vacuum degassers, particularly relates to a vacuum degasser with an automatic control system, and aims to solve the problems of low automation degree and insufficient exhaust efficiency in the background technology, and provides the following scheme: the vacuum degasser comprises a box body, and a water inlet main pipe is arranged on the inner wall of the top of the box body in a penetrating manner; a tank inlet pipe is welded to one side of the outer wall of the bottom of the main water inlet pipe, a vacuum degassing tank is fixedly connected to the outer wall of one end of the tank inlet pipe, and a tank outlet pipe is fixedly connected to the bottom of the outer wall of one side of the vacuum degassing tank. The water inlet main pipe, the tank inlet pipe, the return pipe and the tank outlet pipe are respectively provided with the first to fifth electromagnetic valves, the PLC control unit is used for unified regulation and control, the flexibility and degassing efficiency of a liquid flow path are obviously improved through cooperation of multiple valves, the stirring motor drives the dispersion disc to rotate at a high speed, liquid is dispersed into fine liquid drops, the gas-liquid contact area is increased, and the degassing efficiency is improved. By means of the design, the efficiency bottleneck of traditional static degassing is optimized, and the degassing period is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vacuum degassing machine technical field especially relates to a vacuum degassing machine with automatic control system. BACKGROUND

[0002] The vacuum degassing machine is a kind of key equipment for removing dissolved gas in liquid, is widely used in chemical industry, food, pharmaceutical and other fields.The basic principle is to reduce the solubility of gas in liquid by vacuum negative pressure environment, makes gas from liquid and is discharged, to improve liquid purity or avoid the negative influence caused by bubble in subsequent process.The traditional vacuum degassing machine is usually composed of degassing tank, vacuum pump, pipeline system and simple control unit, adjusts operating parameter, such as pressure, flow rate etc.by manual or semi-automatic mode.However, with the improvement of industrial automation demand, the traditional equipment gradually exposes the limitation in control precision, operation convenience and efficiency.

[0003] The main deficiencies of prior art are embodied in the following aspects:

[0004] 1. Low degree of automation: traditional equipment relies on manual operation solenoid valve and vacuum pump, difficult to realize accurate timing control and pressure regulation, is easy to cause operating error to lead to unstable degassing effect.

[0005] 2. Exhaust efficiency is insufficient: part of equipment only relies on vacuum pump to exhaust, lacks auxiliary exhaust structure, leads to more gas residue, and long degassing period. INVENTION CONTENTS

[0006] In view of the deficiencies of prior art, the utility model provides a vacuum degassing machine with automatic control system, overcomes the deficiencies of prior art, effectively solves the problems of low degree of automation and insufficient exhaust efficiency.

[0007] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0008] A kind of vacuum degassing machine with automatic control system, including box, the water inlet main pipe is installed in the top inner wall of box, and the water inlet main pipe bottom outer wall one side is welded with the tank inlet pipe, the tank inlet pipe one end outer wall is fixedly connected with vacuum degassing tank, the vacuum degassing tank one side outer wall's bottom is fixedly connected with the tank outlet pipe, and vacuum pump is installed on the outer wall of tank outlet pipe, the tank outlet pipe and water inlet main pipe are welded with backflow pipe, the vacuum degassing tank top outer wall is installed with pressure gauge, and the vacuum degassing tank one side outer wall's top is installed with pressure relief valve;

[0009] The bottom of the vacuum degassing tank is provided with an exhaust auxiliary mechanism, and the exhaust auxiliary mechanism comprises a stirring motor fixedly connected to the outer wall of the bottom of the vacuum degassing tank through a screw, a dispersing disc fixedly connected to the output shaft of the stirring motor through a shaft coupling, and an annular sheath mounted on the inner wall of the bottom of the vacuum degassing tank, and the dispersing disc is located in the interior of the dispersing disc.

[0010] Preferably, a first electromagnetic valve is mounted on the outer wall of the water inlet main pipe between the tank inlet pipe and the return pipe.

[0011] Preferably, a second electromagnetic valve is mounted on the outer wall of the tank inlet pipe, and a fifth electromagnetic valve is mounted on the outer wall of the return pipe.

[0012] Preferably, a third electromagnetic valve and a fourth electromagnetic valve are mounted on the outer wall of the tank outlet pipe respectively, wherein the third electromagnetic valve is located between the vacuum degassing tank and the vacuum pump, and the fourth electromagnetic valve is mounted at the end of the tank outlet pipe away from the vacuum pump.

[0013] Preferably, a PLC control unit is arranged in the interior of the box, and the PLC control unit is connected with the stirring motor, the vacuum pump, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve, the pressure gauge and the pressure relief valve through signal lines.

[0014] Preferably, the box comprises a degassing tank chamber, a pump chamber and a control chamber, wherein the vacuum degassing tank, the vacuum pump and the PLC control unit are mounted on the inner walls of the degassing tank chamber, the pump chamber and the control chamber respectively.

[0015] Preferably, a vent pipe is welded to the bottom of the other side outer wall of the vacuum degassing tank, and a manual valve is mounted on the outer wall of the vent pipe.

[0016] The vacuum degassing machine with an automatic control system has the advantages that:

[0017] 1. The vacuum degassing machine with an automatic control system has the advantages that: the first to fifth electromagnetic valves are mounted on the water inlet main pipe, the tank inlet pipe, the return pipe and the tank outlet pipe respectively, and are uniformly controlled by the PLC control unit, for example, the first electromagnetic valve controls the flow distribution of the water inlet main pipe, the second electromagnetic valve adjusts the tank inlet flow rate, the third electromagnetic valve is linked with the vacuum pump to realize dynamic air extraction, and the fifth electromagnetic valve manages the return proportion, so that the flexibility of the liquid flow path and the degassing efficiency are significantly improved.

[0018] 2. The vacuum degassing machine with an automatic control system has the advantages that: the stirring motor drives the dispersing disc to rotate at a high speed, so that the liquid is dispersed into fine droplets, the gas-liquid contact area is increased, and the gas extraction is accelerated, and the efficiency bottleneck of the traditional static degassing is optimized, and the degassing period is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1The utility model provides a kind of vacuum degassing machine with automatic control system's overall structure perspective view of three-dimensional diagram;

[0020] Figure 2 The utility model provides a kind of vacuum degassing machine with automatic control system's overall structure front view;

[0021] Figure 3 The utility model provides a kind of vacuum degassing machine with automatic control system's box body internal connection structure schematic view;

[0022] Figure 4 A kind of vacuum degassing tank internal structure schematic view of the utility model provides a kind of vacuum degassing machine with automatic control system.

[0023] In the drawing: 1, box body;2, water inlet main pipe;3, into tank pipe;4, vacuum degassing tank;5, exhaust auxiliary mechanism;51, stirring motor;52, dispersion disc;53, annular sheath;6, tank outlet pipe;7, vacuum pump;8, backflow pipe;9, first electromagnetic valve;10, second electromagnetic valve;11, third electromagnetic valve;12, fourth electromagnetic valve;13, fifth electromagnetic valve;14, pressure gauge;15, pressure relief valve;16, emptying pipe;17, hand valve;18, PLC control unit;19, degassing tank chamber;20, pump chamber;21, control chamber. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0025] Embodiment one, refer to Figures 1-3 A kind of vacuum degassing machine with automatic control system, including box body 1, the box body 1 top inner wall is installed with water inlet main pipe 2, and the water inlet main pipe 2 bottom outer wall one side is welded with into tank pipe 3, the into tank pipe 3 one end outer wall is fixedly connected with vacuum degassing tank 4, the vacuum degassing tank 4 one side outer wall's bottom is fixedly connected with tank outlet pipe 6, and vacuum pump 7 is installed on the outer wall of tank outlet pipe 6, the backflow pipe 8 is welded between tank outlet pipe 6 and water inlet main pipe 2, the vacuum degassing tank 4 top outer wall is installed with pressure gauge 14, and the vacuum degassing tank 4 one side outer wall's top is installed with pressure relief valve 15.

[0026] In this embodiment, the tank 1 is installed through the water inlet pipe 2 at the top, and is welded into the tank pipe 3 at the bottom and connected to the vacuum degassing tank 4. The tank outlet pipe 6 extends from the bottom of the vacuum degassing tank 4 to the vacuum pump 7, and forms a circulating passage with the water inlet pipe 2 through the backflow pipe 8, which realizes continuous degassing and recycling of the liquid. The pressure gauge 14 is installed at the top of the vacuum degassing tank 4 to monitor the pressure in the tank in real time, and the pressure relief valve 15 on the side wall of the top is automatically opened under the control of the PLC.

[0027] Embodiment two, refer to Figures 3-4 A vacuum degassing machine with an automatic control system, the bottom of the vacuum degassing tank 4 is provided with an exhaust auxiliary mechanism 5, and the exhaust auxiliary mechanism 5 includes a stirring motor 51 fixedly connected to the outer wall of the bottom of the vacuum degassing tank 4 by screws, a dispersion disc 52 fixedly connected to the output shaft of the stirring motor 51 through a shaft coupling, and an annular sheath 53 installed on the inner wall of the bottom of the vacuum degassing tank 4, and the dispersion disc 52 is located inside the dispersion disc 52.

[0028] In this embodiment, the stirring motor 51 drives the dispersion disc 52 through the shaft coupling, and the dispersion disc 52 is installed at the bottom of the vacuum degassing tank 4, and forms a vortex to accelerate gas release when rotating at high speed.

[0029] Refer to Figure 3 The first solenoid valve 9 is installed on the outer wall of the water inlet pipe 2 between the tank inlet pipe 3 and the backflow pipe 8, the second solenoid valve 10 is installed on the outer wall of the tank inlet pipe 3, and the fifth solenoid valve 13 is installed on the outer wall of the backflow pipe 8. The third solenoid valve 11 and the fourth solenoid valve 12 are respectively installed on the outer wall of the tank outlet pipe 6, wherein the third solenoid valve 11 is located between the vacuum degassing tank 4 and the vacuum pump 7, and the fourth solenoid valve 12 is installed at the end of the tank outlet pipe 6 away from the vacuum pump 7.

[0030] The first solenoid valve 9 is located at the branch point of the water inlet pipe 2 to control the path of the liquid entering the water inlet pipe 2; the second solenoid valve 10 adjusts the flow rate of the tank inlet pipe 3; the third solenoid valve 11 isolates the vacuum pump 7 from the vacuum degassing tank 4; the fourth solenoid valve 12 manages the direction of the liquid outlet; and the fifth solenoid valve 13 adjusts the backflow ratio.

[0031] Refer to Figure 3 The inside of the tank 1 is provided with a PLC control unit 18, and the PLC control unit 18 is connected to the stirring motor 51, the vacuum pump 7, the first solenoid valve 9, the second solenoid valve 10, the third solenoid valve 11, the fourth solenoid valve 12, the fifth solenoid valve 13, the pressure gauge 14 and the pressure relief valve 15 through signal lines.

[0032] Refer to Figure 3The box 1 comprises a degassing tank chamber 19, a pump chamber 20 and a control chamber 21, wherein the vacuum degassing tank 4, the vacuum pump 7 and the PLC control unit 18 are respectively installed on the inner walls of the degassing tank chamber 19, the pump chamber 20 and the control chamber 21.

[0033] With reference to Figure 3 The bottom of the outer wall of the other side of the vacuum degassing tank 4 is welded with a emptying pipe 16, and the outer wall of the emptying pipe 16 is installed with a hand valve 17.

[0034] The hand valve 17 is opened when the system fails, and the liquid in the tank is quickly emptied through the emptying pipe 16, so as to avoid damage to the equipment.

[0035] Working principle:

[0036] Vacuum exhaust stage: the vacuum pump 7 is started, the second electromagnetic valve 10 is closed, the third electromagnetic valve 11 and the fourth electromagnetic valve 12 are opened, the pressure in the tank is reduced to a set value, and the vacuum degassing tank 4 is evacuated.

[0037] Liquid input stage: the liquid flows into through the water inlet main pipe 2, the first electromagnetic valve 9 is closed, the second electromagnetic valve 10 is opened to adjust the flow, and the liquid enters the vacuum degassing tank 4 through the tank inlet pipe 3.

[0038] Vacuum degassing stage: under the action of vacuum, the dissolved gas is precipitated. At the same time, the stirring motor 51 drives the dispersion disc 52 to rotate at high speed to accelerate the gas separation.

[0039] Gas discharge and liquid circulation: the precipitated gas is discharged through the pressure relief valve 15, and the degassed liquid is output through the tank outlet pipe 6. The fourth electromagnetic valve 12 is closed, and the fifth electromagnetic valve 13 is opened, and the liquid is returned to the water inlet main pipe 2 through the return pipe 8.

[0040] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A vacuum degassing machine with an automatic control system, comprising a tank (1), characterized in that, The water inlet main pipe (2) is arranged on the inner wall of the top of the box (1), one side of the outer wall of the bottom of the water inlet main pipe (2) is welded with the tank inlet pipe (3), the outer wall of one end of the tank inlet pipe (3) is fixedly connected with the vacuum degassing tank (4), the bottom of the outer wall of one side of the vacuum degassing tank (4) is fixedly connected with the tank outlet pipe (6), the outer wall of the tank outlet pipe (6) is provided with the vacuum pump (7), the tank outlet pipe (6) and the water inlet main pipe (2) are welded with the reflux pipe (8), the outer wall of the top of the vacuum degassing tank (4) is provided with the pressure gauge (14), and the outer wall of one side of the top of the vacuum degassing tank (4) is provided with the pressure relief valve (15). The bottom of the vacuum degassing tank (4) is provided with the exhaust auxiliary mechanism (5), and the exhaust auxiliary mechanism (5) comprises the stirring motor (51) fixedly connected to the outer wall of the bottom of the vacuum degassing tank (4) through screws, the dispersion disc (52) fixedly connected to the output shaft of the stirring motor (51) through a shaft coupling, the annular sheath (53) arranged on the inner wall of the bottom of the vacuum degassing tank (4), and the dispersion disc (52) is located in the inside of the dispersion disc (52).

2. The vacuum degassing machine with an automatic control system according to claim 1, characterized in that, The first electromagnetic valve (9) is arranged on the outer wall of the water inlet main pipe (2) between the tank inlet pipe (3) and the reflux pipe (8).

3. The vacuum degassing machine with an automatic control system according to claim 1, characterized in that, The second electromagnetic valve (10) is arranged on the outer wall of the tank inlet pipe (3), and the fifth electromagnetic valve (13) is arranged on the outer wall of the reflux pipe (8).

4. The vacuum degassing machine with an automatic control system according to claim 1, characterized in that, The third electromagnetic valve (11) and the fourth electromagnetic valve (12) are respectively arranged on the outer wall of the tank outlet pipe (6), wherein the third electromagnetic valve (11) is located between the vacuum degassing tank (4) and the vacuum pump (7), and the fourth electromagnetic valve (12) is arranged on the end of the tank outlet pipe (6) away from the vacuum pump (7).

5. The vacuum degassing machine with automatic control system according to claim 1, characterized in that, The inside of the box (1) is provided with the PLC control unit (18), and the PLC control unit (18) is connected with the stirring motor (51), the vacuum pump (7), the first electromagnetic valve (9), the second electromagnetic valve (10), the third electromagnetic valve (11), the fourth electromagnetic valve (12), the fifth electromagnetic valve (13), the pressure gauge (14) and the pressure relief valve (15) through signal lines.

6. The vacuum degassing machine with an automatic control system according to claim 1, characterized in that, The box (1) comprises a degassing tank chamber (19), a pump chamber (20) and a control chamber (21), wherein the vacuum degassing tank (4), the vacuum pump (7) and the PLC control unit (18) are respectively arranged on the inner walls of the degassing tank chamber (19), the pump chamber (20) and the control chamber (21).

7. The vacuum degassing machine with automatic control system according to claim 1, characterized in that, The bottom of the other side of the outer wall of the vacuum degassing tank (4) is welded with the emptying pipe (16), and the outer wall of the emptying pipe (16) is provided with the manual valve (17).

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