CN211462138U - Distillation column backflow limiting device - Google Patents

Abstract

The invention relates to the technical field of fractionation, and discloses a reflux restricting device for a distillation column, which comprises a shell, four legs are evenly distributed on the peripheral side of the lower part of the shell, a residue outlet is provided at the bottom of the shell, and a top of the shell is provided with a Jacking pipe, the top of the jacking pipe is fixedly installed with a condenser, the upper part of one side of the shell is provided with a reflux liquid outlet, the lower part of one side of the shell is provided with a reflux liquid inlet, and one end of the reflux liquid outlet is bolted with a control valve, the control valve One end of the casing is bolted with a steam guide pipe, one end of the casing is provided with a feeding port, the inside of the casing is welded and fixed with a first guide cover, and the top of the first guide cover is welded and connected with a steam outlet. Through a series of structural designs, the present invention enables the device to adjust the reflux flow according to the distillation speed, thereby effectively controlling the reflux ratio, improving the quality of the isolated product, and the device can make the reflux liquid flow back naturally along the pipe wall, which is greatly convenient collection of reflux.

Description

A distillation column reflux restriction device

technical field

The invention relates to the technical field of fractionation, in particular to a reflux restriction device of a distillation column.

Background technique

The liquid is heated to boiling to turn the liquid into vapor, and then the vapor is cooled and then condensed into a liquid. The combined operation of these two processes is called distillation, and the proportional control is realized by using a regulating valve and a flow meter. The requirements for the automatic control system are higher. However, the existing device cannot adjust the reflux flow according to the distillation speed, cannot effectively control the reflux ratio, and the device cannot make the reflux liquid flow back naturally along the pipe wall, which is inconvenient to collect the reflux liquid.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the shortcomings existing in the prior art, such as: the existing device cannot adjust the reflux flow according to the speed of distillation, cannot effectively control the reflux ratio, and the device cannot make the reflux liquid along the pipe wall. Natural reflux, inconvenient to collect the reflux liquid.

In order to achieve the above object, the present invention adopts the following technical solutions:

A reflux restricting device of a distillation column, comprising a shell, four legs are evenly distributed on the peripheral side of the lower part of the shell, a residue outlet is arranged at the bottom of the shell, and a top pipe is arranged at the top of the shell, so the The top of the top pipe is fixedly installed with a condenser, the upper part of one side of the shell is provided with a reflux liquid outlet, the lower part of one side of the shell is provided with a reflux liquid inlet, and one end of the reflux liquid outlet is bolted with a control device. One end of the control valve is bolted with a steam guide pipe, one end of the casing is provided with a feeding port, and the inside of the casing is welded and fixed with a first shroud, and the top of the first shroud is A steam outlet is welded and connected, and a liquid storage tank is welded and connected to one side of the bottom of the first shroud.

Preferably, the control valve includes a connecting valve, a sealing plate, a fixing frame, a mounting plate, a threaded sleeve, a handwheel, a screw, a connecting rod, a pointer plate, a sealing ring and a flow control block, and the top of the middle part of the connecting valve is fixedly installed There is a sealing plate, a fixing frame is fixedly installed on the top of the sealing plate, a mounting plate is welded and fixed on the top of the fixing frame, a threaded sleeve is sleeved and fixed in the middle of the installation plate, and the inner threaded connection of the threaded sleeve is A screw, a hand wheel is fixedly installed on the top of the screw, a connecting rod is fixedly installed on the top of the screw, a pointer board is fixedly installed on the upper part of the connecting rod, and a sealing ring is sleeved and fixed in the middle of the pointer board, so The bottom of the pointer plate is fixedly installed with a flow control block.

Preferably, the condenser includes a liquid outlet, a tank body, a fixing plate, a second shroud, a mounting frame and a condensation pipe, a liquid outlet is provided at the bottom of the tank body, and the interior of the tank body is welded and fixed There is a fixing plate, the middle of the fixing plate is welded and fixed with a second shroud, four mounting brackets are fixedly installed on the upper surface of the fixing plate, and a condensation pipe is fixedly installed between the two mounting brackets.

Preferably, a hole is provided in the middle of the fixing plate, and the diameter of the hole is equal to the diameter of the upper opening of the second air duct.

Preferably, both ends of the fixing plate are completely attached to the inner wall of the tank body, and the fixing plate and the tank body are connected by welding.

Preferably, the outer side of the liquid outlet is welded and fixed with a flange.

Preferably, the top of the screw rod is provided with a threaded hole, and the handwheel and the screw rod are fixedly connected by screws.

Preferably, the inner side of the fixing frame is provided with a scale.

Preferably, the diameter of the steam outlet is equal to the diameter of the lower opening of the second shroud.

Compared with the prior art, the beneficial effects of the present invention are:

(1) The present invention heats the raw material inside the shell. Under a certain pressure, when heated to a certain temperature, the liquid begins to vaporize, and the generated steam enters through the first shroud, the steam outlet and the second shroud. Inside the tank, the liquid generated by the cooling of the condenser tube condenses to the bottom of the tank, flows into the first shroud along the outer surface of the second shroud, and then collects in the liquid storage tank, so that the reflux liquid flows along the pipe. The wall is naturally backflowed, which greatly facilitates the collection of the backflow liquid.

(2) The present invention makes the screw move up and down by turning the handwheel, so that the screw drives the connecting rod to move up and down, and the connecting rod drives the flow control block to move, and the flow control block controls the liquid flowing through the connecting valve, so that the device can be distilled according to the distillation process. It can adjust the reflux flow at the same speed, and then effectively control the reflux ratio and improve the quality of the isolated product.

Description of drawings

Fig. 1 is the schematic diagram of the overall structure of the present invention;

Fig. 2 is the axial side view of the whole of the present invention;

Fig. 3 is the sectional view of the distillation column of the present invention;

Fig. 4 is the sectional view of the control valve of the present invention;

Fig. 5 is the structural schematic diagram of the control valve of the present invention;

Fig. 6 is the sectional view of the condenser of the present invention;

FIG. 7 is a schematic structural diagram of the condenser of the present invention.

In the figure: 1. Shell; 2. Legs; 3. Residue outlet; 4. Jack pipe; 5. Condenser; 6. Reflux outlet; 7. Reflux inlet; 8. Control valve; 9. Steam conduit; 10. Feeding port; 11. Steam outlet; 12. First shroud; 13. Liquid storage tank; 14. Connecting valve; 15. Sealing plate; 16. Fixing frame; 17. Mounting plate; 18. Threaded sleeve; 19 , hand wheel; 20, screw; 21, connecting rod; 22, pointer plate; 23, sealing ring; 24, flow control block; 25, liquid outlet; 26, tank body; 27, fixed plate; 28, second guide Flow hood; 29. Mounting frame; 30. Condenser pipe.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention.

Referring to Figures 1-7, a distillation column reflux restriction device includes a shell 1, four legs 2 are evenly distributed on the peripheral side of the lower part of the shell 1, the bottom of the shell 1 is provided with a residue outlet 3, and the top of the shell 1 is provided with a residue outlet 3. A top pipe 4 is provided, the top of the top pipe 4 is fixedly installed with a condenser 5, the upper part of one side of the shell 1 is provided with a reflux liquid outlet 6, the lower part of one side of the shell 1 is provided with a reflux liquid inlet 7, and a reflux liquid outlet 6 A control valve 8 is bolted to one end of the control valve 8, a steam guide pipe 9 is bolted to one end of the control valve 8, a feeding port 10 is provided at one end of the casing 1, and a first guide cover 12 is welded and fixed inside the casing 1. A steam outlet 11 is welded and connected to the top of the shroud 12, and a liquid storage tank 13 is welded to one side of the bottom of the first shroud 12;

Control valve 8 includes connecting valve 14, sealing plate 15, fixing frame 16, mounting plate 17, threaded sleeve 18, hand wheel 19, screw 20, connecting rod 21, pointer plate 22, sealing ring 23 and flow control block 24, connecting valve The top of the middle part of 14 is fixedly installed with a sealing plate 15, the top of the sealing plate 15 is fixedly installed with a fixing frame 16, the top of the fixing frame 16 is welded and fixed with a mounting plate 17, and a threaded sleeve 18 is fixed in the middle of the installation plate 17. The screw 20 is threadedly connected to the inside of the screw 18, and the top of the screw 20 is provided with a threaded hole. The handwheel 19 and the screw 20 are fixedly connected by screws, so that the handwheel 19 and the screw 20 are connected as a whole, and the top of the screw 20 is fixedly installed with the handwheel 19. , the top of the screw 20 is fixedly installed with a connecting rod 21, the upper part of the connecting rod 21 is fixedly installed with a pointer plate 22, and the inner side of the fixing frame 16 is provided with a scale, which is convenient to observe the moving position of the pointer board 22. The middle of the pointer board 22 is sleeved A sealing ring 23 is fixed, and a flow control block 24 is fixedly installed on the bottom of the pointer plate 22;

The condenser 5 includes a liquid outlet 25, a tank body 26, a fixing plate 27, a second shroud 28, a mounting bracket 29 and a condenser pipe 30. The bottom of the tank body 26 is provided with a liquid outlet 25, and the outer side of the liquid outlet 25 is provided. The flange plate is welded and fixed, so that the liquid outlet 25 and the jacking pipe 4 are connected by bolts. The inner part of the tank body 26 is welded and fixed with a fixed plate 27. The two ends of the fixed plate 27 are completely attached to the inner wall of the tank body 26. 27 and the tank 26 are connected by welding, the middle of the fixing plate 27 is welded and fixed with a second shroud 28, and the middle of the fixing plate 27 is provided with a hole, and the diameter of the hole is equal to the diameter of the upper opening of the second shroud 28, so that The second steam shroud 28 can be welded to the outside of the hole, and the diameter of the steam outlet 11 is equal to the diameter of the lower opening of the second shroud 28, so that the steam enters the tank 26 through the steam outlet 11 and the second shroud 28 Inside, four mounting brackets 29 are fixedly installed on the upper surface of the fixing plate 27 , and a condenser tube 30 is fixedly installed between the two mounting brackets 29 .

working principle:

In the present invention, when the user uses the device, the user opens the feeding port 10 to add raw materials, and by heating the raw materials inside the shell 1, under a certain pressure, when heated to a certain temperature, the liquid begins to vaporize, and the generated steam passes through the first A shroud 12 , the steam outlet 11 and the second shroud 28 enter the interior of the tank body 26 , and the liquid generated by the cooling of the condenser pipe 30 condenses to the bottom of the tank body 26 , and flows into the outer surface of the second shroud 28 . The condensate enters the connecting valve 14 through the reflux liquid outlet 6, and the handwheel 19 is rotated to make the screw 20 move up and down, so that the screw 20 drives the connecting rod 21 to move up and down At the same time, the connecting rod 21 drives the flow control block 24 to move, and the liquid flowing through the connecting valve 14 is controlled by the flow control block 24 .

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

It should be noted that, in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Claims (9)

1. A distillation column reflux restriction device, comprising a shell (1), characterized in that the peripheral side of the lower part of the shell (1) is evenly distributed with four legs (2), and the A residue outlet (3) is provided at the bottom, a top pipe (4) is provided on the top of the casing (1), and a condenser (5) is fixedly installed on the top of the top pipe (4). The upper part of one side of the casing (1) is provided with a backflow outlet (6), the lower part of one side of the casing (1) is provided with a backflow inlet (7), and one end of the backflow outlet (6) is bolted with a control valve ( 8), one end of the control valve (8) is bolted with a steam guide pipe (9), one end of the casing (1) is provided with a feeding port (10), and the interior of the casing (1) is fixed by welding There is a first shroud (12), the top of the first shroud (12) is connected with a steam outlet (11) by welding, and one side of the bottom of the first shroud (12) is welded and connected with a liquid storage slot (13). 2. A distillation column reflux restriction device according to claim 1, characterized in that, the control valve (8) comprises a connecting valve (14), a sealing plate (15), a fixing frame (16), a mounting plate ( 17), threaded sleeve (18), hand wheel (19), screw (20), connecting rod (21), pointer plate (22), sealing ring (23) and flow control block (24), the connecting valve ( 14) A sealing plate (15) is fixedly installed on the top of the middle part, a fixing frame (16) is fixedly installed on the top of the sealing plate (15), and a mounting plate (17) is fixed on the top of the fixing frame (16) by welding, A threaded sleeve (18) is sleeved and fixed in the middle of the mounting plate (17), a screw (20) is threadedly connected to the inside of the threaded sleeve (18), and a handwheel (20) is fixedly installed on the top of the screw (20). 19), a connecting rod (21) is fixedly installed on the top of the screw rod (20), a pointer board (22) is fixedly installed on the upper part of the connecting rod (21), and the middle part of the pointer board (22) is fixedly socketed and fixed There is a sealing ring (23), and a flow control block (24) is fixedly installed at the bottom of the pointer plate (22). 3. A distillation column reflux restriction device according to claim 1, wherein the condenser (5) comprises a liquid outlet (25), a tank (26), a fixed plate (27), a second The shroud (28), the mounting bracket (29) and the condensation pipe (30), the bottom of the tank body (26) is provided with a liquid outlet (25), and the interior of the tank body (26) is welded and fixed with a fixed plate (27), the middle of the fixing plate (27) is welded and fixed with a second shroud (28), the upper surface of the fixing plate (27) is fixedly installed with four mounting brackets (29), two of which are A condenser pipe (30) is fixedly installed between the mounting brackets (29). 4. A distillation column reflux restriction device according to claim 3, characterized in that, a hole is opened in the middle of the fixed plate (27), and the diameter of the hole is the same as that of the upper part of the second guide cover (28). Mouth diameters are equal. 5. A distillation column reflux restriction device according to claim 3, characterized in that, both ends of the fixed plate (27) are completely fitted with the inner wall of the tank (26), and the fixed plate (27) It is connected with the tank body (26) by welding. 6 . The reflux restricting device of a distillation column according to claim 3 , wherein a flange plate is welded and fixed on the outer side of the liquid outlet ( 25 ). 7 . 7. A distillation column reflux restriction device according to claim 2, characterized in that, a threaded hole is provided at the top of the screw (20), and the handwheel (19) and the screw (20) are fixedly connected by screws . 8 . The reflux restricting device of a distillation column according to claim 2 , wherein a scale is arranged on the inner side of the fixing frame ( 16 ). 9 . 9 . The reflux restricting device of a distillation column according to claim 3 , wherein the diameter of the steam outlet ( 11 ) is equal to the diameter of the lower opening of the second guide hood ( 28 ). 10 .

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