A self-defoaming reaction tank

Abstract

The present invention discloses a self-defoaming reaction tank, including a tank body, the tank body including a working chamber, a stirring device arranged in the working chamber, a vacuuming interface arranged on the tank body, a defoaming device arranged on the side of the vacuuming interface close to the working chamber, and the defoaming device connected to the tank body through a vacuum breaking interface arranged on the tank body. The self-defoaming reaction tank is provided with a defoaming component and a vacuum breaking valve controlled, and the defoaming pipe is provided as an annular pipe, and a defoaming hole is arranged on the defoaming pipe. By controlling the vacuum breaking valve, air of standard atmospheric pressure passes through the vacuum breaking pipe, the defoaming pipe connecting pipe, and the defoaming pipe in sequence, and is blown out from the defoaming hole to the foam near the defoaming pipe in the working chamber under negative pressure, so as to realize local defoaming in the vacuuming area, prevent the foam from entering the vacuuming pipe, and protect the vacuuming component.

Description

Technical Field

[0001] The invention relates to the technical field of chemical equipment, in particular to a self-defoaming reaction tank. Background Art

[0002] As we all know, in the chemical industry, especially during chemical production processes such as chemical reactions, biological extraction, crystal separation, concentration, and material transfer in a vacuum tank, a large amount of foam is often generated on the surface of the liquid in the tank. Then, the foam enters the vacuum pipe, causing the above process to be unable to proceed normally. Therefore, if the foam is not eliminated in a timely and effective manner, it will lead to production suspension or even other unexpected serious accidents, resulting in huge losses.

[0003] There are two commonly used defoaming methods: one is chemical defoaming, such as adding defoaming agents to defoam; the other is physical defoaming, such as using a mechanical defoamer. Adding a defoamer is a widely used method at present. It is to add a certain amount of suitable defoamer to the material to reduce or inhibit foaming by changing the surface tension of the material, thereby achieving the purpose of defoaming. However, the use of defoamers will affect the performance of the product or pollute the product, resulting in poor product quality, and the defoamer is expensive, resulting in increased costs. The defoaming effect of a single mechanical defoamer is not ideal. The prior art discloses a fumaric acid rosin pentaerythritol ester esterification defoaming stirring device (patent number 2013200814301), which achieves defoaming only under the action of centrifugal force by connecting defoaming blades in the vertical direction of the stirring shaft. The defoaming effect is not ideal, the equipment structure is complex, and other related adverse consequences are brought about. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a self-defoaming reaction tank, which has a self-defoaming function and good defoaming effect, a simple structure, and is easy to load and unload, easy to clean and use.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a self-defoaming reaction tank, including a tank body, the tank body including a working chamber, a stirring device is provided in the working chamber, a vacuum extraction interface is provided on the tank body, a defoaming device is provided on the side of the vacuum extraction interface close to the working chamber, and the defoaming device is connected to the tank body through a vacuum breaking interface provided on the tank body.

[0006] Furthermore, the defoaming device includes a defoaming tube, a vacuum breaking tube and a vacuum breaking valve. The vacuum breaking tube passes through the vacuum breaking interface, one end of which is connected to the vacuum breaking valve and the other end is connected to the defoaming tube. The defoaming tube is located below the vacuum extraction interface.

[0007] Furthermore, the defoaming tube is an annular tube, and the defoaming tube is arranged in the horizontal direction inside the tank body, and the vertical center line of the annular tube of the defoaming tube is aligned with the center line of the vacuum interface.

[0008] Furthermore, the defoaming tube is provided with a vertical defoaming hole, an inner defoaming hole and an outer defoaming hole, the inner defoaming hole is arranged at an angle to the vertical defoaming hole, and the outer defoaming hole is arranged at an angle to the vertical defoaming hole.

[0009] Furthermore, the stirring device includes a motor, a stirring shaft and a stirring paddle, one end of the stirring shaft is connected to the motor, and the other end is connected to the stirring paddle, the motor is arranged outside the working chamber, and the stirring paddle is arranged inside the working chamber.

[0010] Furthermore, the stirring paddle is of a U-shaped structure, the stirring shaft extends from the opening of the U-shaped stirring paddle and is connected to the closed end of the U-shaped stirring paddle, and a horizontal stirring rod is provided in the middle section of the stirring shaft.

[0011] Furthermore, the tank body also includes a hot water jacket, which is arranged on the outer wall of the working chamber, a hot water chamber is arranged inside the hot water jacket, and a hot water liquid inlet interface, a hot water liquid outlet interface, and a hot water sewage discharge interface are arranged on the outer wall of the hot water jacket.

[0012] Furthermore, the hot water inlet interface and the hot water outlet interface are arranged on both sides of the hot water chamber.

[0013] Furthermore, one end of the tank body where the vacuum extraction interface is arranged is also provided with a manhole.

[0014] Furthermore, the tank body also includes a heat-insulating layer, and the heat-insulating layer is arranged on the outside of the hot water jacket.

[0015] Beneficial effects of the present invention:

[0016] 1. The self-defoaming reaction tank is provided with a defoaming component and a controlled vacuum breaking valve, and the defoaming pipe is provided as a ring pipe. The defoaming pipe is provided with a defoaming hole. By controlling the vacuum breaking valve, the air at standard atmospheric pressure passes through the vacuum breaking pipe, the defoaming pipe connecting pipe, and the defoaming pipe in sequence, and is blown out from the defoaming hole to the foam near the defoaming pipe in the working chamber under negative pressure, so as to realize local defoaming in the vacuum area, prevent the foam from entering the vacuum pipe, and protect the vacuum parts;

[0017] 2. The self-defoaming reaction tank is also provided with a hot water jacket and hot water is introduced into the hot water jacket to adjust and stabilize the temperature of the material in the working chamber;

[0018] 3. The stirring device in the self-defoaming reaction tank is provided with a U-shaped stirring paddle, and a transverse stirring rod is provided between the U-shaped stirring paddles to achieve full mixing of the logistics and uniform reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 — is a schematic diagram of the structure of this embodiment;

[0020] Figure 2 — is an enlarged schematic diagram of a defoaming device;

[0021] Figure 3 — is a schematic top view of the defoaming tube;

[0022] Figure 4 -for Figure 3 Schematic diagram of middle II;

[0023] Figure 5 — is a schematic diagram of the working status of this embodiment.

[0024] In the figure: 100-tank body, 200-defoaming device, 300-vacuuming device, 400-stirring device, 500-hot water jacket, 600-support frame, 700-manhole, 800-insulation layer, 110-working chamber, 120-material transfer interface, 130-vacuum breaking interface, 140-vacuuming interface, 210-defoaming pipe, 220-defoaming pipe connecting pipe, 230-vacuum breaking pipe, 240-vacuum breaking valve, 310-vacuuming valve, 320-vacuuming pipe, 410-motor, 420-stirring shaft, 430-stirring paddle, 510-hot water chamber, 520-hot water inlet interface, 530-hot water outlet interface, 540-hot water sewage discharge interface, 211-vertical defoaming hole, 212-inner defoaming hole, 213-outer defoaming hole. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Reference Figure 1~Figure 5 A self-defoaming reaction tank comprises a tank body 100, wherein the tank body 100 comprises a working chamber 110, wherein a stirring device 400 is arranged in the working chamber 110, and a vacuum extraction interface 140 is arranged on the tank body 100, and a defoaming device 200 is arranged on the side of the vacuum extraction interface 140 close to the working chamber 110, and the defoaming device 200 is connected to the tank body 100 via a vacuum breaking interface 130 arranged on the tank body 100.

[0027] In this embodiment, according to the placement position of the tank body 100 in the figure, it is defined as the up and down direction, that is, a logistics transfer interface is provided at the bottom of the tank body 100, and the material transfer interface 120 is arranged along the vertical direction; a vacuum extraction interface 140 and a vacuum breaking interface 130 are provided at the upper part of the tank body 100, and the vacuum extraction interface 140 and the vacuum breaking interface 130 are arranged along the vertical direction.

[0028] A vacuum interface 140 is provided at the upper part of the tank body 100, and a vacuum device 300 is installed on the vacuum interface 140. The vacuum device 300 includes a vacuum valve 310, a vacuum pipe 320, and a vacuum pump. The vacuum pump can be selected as GVD18-28. The vacuum pump is connected to the vacuum valve 310 through the vacuum pipe 320, and the vacuum valve 310 is connected to the vacuum interface 140. By opening the valve and the vacuum pump, a vacuum can be drawn to form a negative pressure state in the working chamber 110.

[0029] In this embodiment, a vacuum breaking interface 130 is provided near the vacuum extraction interface 140, and a defoaming device 200 is installed on the vacuum breaking interface 130. The defoaming device 200 includes a defoaming tube 210, a defoaming tube connecting tube 220, a vacuum breaking tube 230 and a vacuum breaking valve 240. The vacuum breaking valve 240 is installed on the vacuum breaking interface 130. One end of the vacuum breaking valve 240 is located outside the working chamber 110 and is connected to the air compressor, and the other end is connected to the vacuum breaking tube 230. The vacuum breaking tube 230 is further connected to the defoaming tube connecting tube 220, and the defoaming tube connecting tube 220 is connected to the defoaming tube 210.

[0030] The defoaming tube 210 is an annular tube, and the annular center vertical line of the defoaming tube 210 is aligned with the center line of the vacuum port 140, that is, the defoaming tube 210 is located below the vacuum port 140, and the defoaming tube 210 is arranged horizontally relative to the vacuum port 140. The defoaming tube 210 is provided with a vertical defoaming hole 211, an inner defoaming hole 212 and an outer defoaming hole 213, the vertical defoaming hole 211 is a hole opened in the vertical direction below the annular tube, the inner defoaming hole 212 is a hole opened on the inner wall of the annular tube, and the outer defoaming hole 213 is a hole opened on the outer wall of the annular tube.

[0031] In this embodiment, a row of inner defoaming holes 212 are arranged along the inner side of the annular tube, and the inner defoaming holes 212 are arranged at 30° to the vertical defoaming holes 211; two rows of outer defoaming holes 213 are arranged along the outer side of the annular tube, and the outer defoaming holes 213 are arranged at 20° and 35° to the vertical defoaming holes 211 respectively.

[0032] The inner defoaming hole is set because the inner defoaming hole blows to the inside of the annular tube. The inner range is small, but more important, because the vacuum device is above the annular tube, and bubbles need to be prevented from entering the vacuum device; according to the size of the bubbles generated in the tank and the path of the bubbles to the bottom of the vacuum device, the angle between the inner defoaming hole and the vertical defoaming hole is selected to be 30°. This angle setting can blow all the bubbles downward, preventing the bubbles from being blown upward due to the divergence of the blown gas; in addition, this angle setting will not affect the gas outlet of the vertical defoaming hole, and will also make the gas blown out from the inner defoaming hole strong, which can directly burst some bubbles. The outer defoaming holes have a larger blowing range than the inner defoaming holes, so two rows of holes are provided on the outer side of the annular tube to disperse the bubbles around the annular tube. In order to ensure that the outer defoaming holes and the vertical defoaming holes do not affect each other and to ensure that the blown gas is strong enough to break some bubbles, the angles between the outer defoaming holes and the vertical defoaming holes are 20° and 35°. At the same time, the setting of this angle also avoids blowing bubbles upwards due to the divergence of gas when it exits the hole.

[0033] The present invention can realize the working principle of self-defrothing: by controlling the vacuum breaking valve 240, the air of standard atmospheric pressure in the air compressor passes through the vacuum breaking pipe 230, the defoaming pipe connecting pipe 220, and the defoaming pipe 210 in sequence and blows toward the foam near the defoaming pipe 210 in the working chamber 110 under negative pressure, and blows the foam apart (at this time, the air pressure outside the foam is higher than the air pressure inside it, and it is easy to break) or blow it away, thereby realizing the self-defrothing function.

[0034] In this embodiment, the self-defoaming reaction tank also includes a stirring device 400, which includes a motor 410, a stirring shaft 420 and a stirring paddle 430. The motor 410 is arranged outside the working chamber 110, and the stirring paddle 430 is arranged inside the working chamber 110, which is a U-shaped structure; one end of the stirring shaft 420 is connected to the shaft of the motor 410, and the other end enters from the opening of the U-shaped stirring paddle 430 and is connected to the bottom of the U-shaped stirring paddle 430, and two horizontal stirring rods are provided in the middle section of the stirring shaft 420 to achieve sufficient mixing of the logistics and uniform reaction.

[0035] In this embodiment, the self-defoaming reaction tank also includes a hot water jacket 500. The hot water jacket 500 is installed on the outer wall of the working chamber 110. The hot water jacket 500 has a hot water chamber 510 inside. The outer wall of the hot water jacket 500 has a hot water inlet interface 520, a hot water outlet interface 530, and a hot water sewage interface 540; the hot water inlet interface 520 and the hot water outlet interface 530 are located on both sides of the hot water chamber 510. Preferably, the hot water sewage interface 540 can be circular. The temperature of the material in the working chamber 110 is adjusted and stabilized by providing the hot water jacket 500 and passing hot water into the hot water jacket 500; the hot water jacket 500 also discharges the sewage accumulated in the hot water jacket 500 by providing the hot water sewage interface 540 and the sewage discharge component, so as to keep the environment in the hot water jacket 500 clean.

[0036] In this embodiment, the self-defoaming reaction tank is further provided with two support frames 600, which are located in the middle and lower part of the tank body and in symmetrical positions. The support frames 600 can provide support points when the tank body 100 is placed.

[0037] The self-defoaming reaction tank further comprises a manhole 700, which is located at the middle and upper part of the tank body. Through the manhole 700, operators can easily clean and inspect various places in the reaction tank, thereby improving work efficiency and reducing labor intensity.

[0038] The self-defoaming reaction tank further comprises a heat-insulating layer 800, which is located outside the hot water jacket 500 and outside the working chamber 110. Preferably, the heat-insulating material is a material with a heat index less than or equal to 0.12, for example, polyurethane foam.

[0039] In this embodiment, the specific dimensions of the self-defoaming reaction tank can be: the working chamber 110 is cylindrical, the inner diameter of the working chamber 110 is 1200mm, and the wall thickness is 6mm; the distance between the defoaming tube 210 and the bottom of the working chamber 110 is 1000mm; the distance between the outer wall of the hot water chamber 510 and the outer wall of the working chamber 110 is 75mm, and the wall thickness of the hot water chamber 510 is 4mm; the thickness of the insulation layer 800 is 50mm.

[0040] The defoaming tube 210 of the defoaming component has an outer diameter of 38 mm and a wall thickness of 3 mm; the inner diameter of the annular tube of the defoaming tube 210 is 350 mm; the inner diameter of the vertical defoaming hole 211 is 5 mm, the inner diameter of the inner defoaming hole 212 is 5 mm, and the inner diameter of the outer defoaming hole 213 is 5 mm; the inner defoaming hole 212 is provided with a row of holes, which is at an angle of 30° to the vertical defoaming hole 211; the outer defoaming hole 213 is provided with two rows of holes, which are at angles of 20° and 35° to the vertical defoaming hole 211 respectively; the outer diameter of the defoaming tube connecting tube 220 is 38 mm and the wall thickness is 3 mm; the annular center vertical line of the defoaming tube 210 is aligned with the center line of the vacuum interface 140.

[0041] The U-shaped stirring paddle 430 of the stirring device 400 has a height of 700 mm, a width of 60 mm, and a thickness of 10 mm; the horizontal stirring rod has a length of 1000 mm, a width of 60 mm, and a thickness of 10 mm.

[0042] When the self-defoaming reaction tank in this embodiment is used for the crystallization of a plant extract product, 40-50°C hot water is introduced into the hot water chamber 510, the stirring device 400 is turned on, the vacuum pump is started, and the vacuum breaking valve 240 is set to open. The defoaming efficiency is high, the material reacts evenly, the crystallization speed is fast, and the product particles after crystallization are uniform, bright in appearance, and good in quality.

[0043] The above are merely embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have combinations and modifications of the aforementioned various technical features. Without departing from the spirit and scope of the present invention, those skilled in the art may make improvements, modifications, equivalent substitutions, or apply the structure or method of the present invention to other fields to achieve the same effect, all of which fall within the scope of protection of the present invention.

Claims

1. A self-defoaming reaction tank, Features: The tank body comprises a tank body, which comprises a working chamber, a stirring device is arranged in the working chamber, a vacuum pumping interface is arranged on the tank body, a defoaming device is arranged on the side of the vacuum pumping interface close to the working chamber, and the defoaming device is connected to the tank body through a vacuum breaking interface arranged on the tank body; the defoaming device comprises a defoaming tube, a vacuum breaking tube and a vacuum breaking valve, the vacuum breaking tube passes through the vacuum breaking interface, one end of the vacuum breaking tube is connected to the vacuum breaking valve, and the other end is connected to the defoaming tube, and the defoaming tube is located below the vacuum pumping interface; the defoaming tube is an annular tube, and the defoaming tube is arranged in the horizontal direction inside the tank body, and the annular center vertical line of the defoaming tube is aligned with the center line of the vacuum pumping interface.

2. The self-defoaming reaction tank according to claim 1, Features: The defoaming tube is provided with a vertical defoaming hole, an inner defoaming hole and an outer defoaming hole. The inner defoaming hole is arranged at an angle with the vertical defoaming hole, and the outer defoaming hole is arranged at an angle with the vertical defoaming hole.

3. The self-defoaming reaction tank according to claim 1, Features: The stirring device comprises a motor, a stirring shaft and a stirring paddle, one end of the stirring shaft is connected to the motor, and the other end is connected to the stirring paddle, the motor is arranged outside the working chamber, and the stirring paddle is arranged inside the working chamber.

4. The self-defoaming reaction tank according to claim 3, Features: The stirring paddle is of U-shaped structure, the stirring shaft extends from the opening of the U-shaped stirring paddle and is connected with the closed end of the U-shaped stirring paddle, and a horizontal stirring rod is arranged in the middle section of the stirring shaft.

5. The self-defoaming reaction tank according to claim 1, Features: The tank body also includes a hot water jacket, which is arranged on the outer wall of the working chamber, a hot water chamber is arranged inside the hot water jacket, and a hot water liquid inlet interface, a hot water liquid outlet interface, and a hot water sewage discharge interface are arranged on the outer wall of the hot water jacket.

6. The self-defoaming reaction tank according to claim 5, Features: The hot water inlet interface and the hot water outlet interface are arranged on both sides of the hot water cavity.

7. The self-defoaming reaction tank according to claim 1, Features: One end of the tank body where the vacuum extraction interface is arranged is also provided with a manhole.

8. The self-defoaming reaction tank according to claim 5, Features: The tank body also includes a heat-insulating layer, which is arranged on the outside of the hot water jacket.

Images