MVR (Mechanical Vapor Recompression) evaporation and concentration equipment

Abstract

The utility model discloses MVR (Mechanical Vapor Recompression) evaporation and concentration equipment which comprises an evaporation tank, a sampling mechanism is arranged on the cylindrical surface of the evaporation tank and comprises an air pump, a piston rod, a pull plate, a moving shaft, a connecting pipe, a sampling pipe and a piston column, the connecting pipe is fixedly connected to the cylindrical surface of the evaporation tank and is communicated with the inside of the evaporation tank, and the piston column is fixedly connected with the piston rod. The air pump is fixedly connected to the cylindrical surface of the evaporation tank, the piston rod is fixedly connected to the output end of the air pump, the pulling plate is fixedly connected to the end face, away from the air pump, of the piston rod, the piston column is slidably connected to the inner cylindrical surface of the connecting pipe, and the moving shaft is fixedly connected between the pulling plate and the piston column. The sampling pipe is fixedly connected to the cylindrical surface of the connecting pipe, and the sampling pipe is communicated with the interior of the connecting pipe. According to the structure, the sampling mechanism is arranged, so that concentrated liquid in the evaporation tank can be quickly sampled, and the working efficiency of the MVR evaporator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporation concentration, and particularly relates to an MVR evaporation concentration device. Background Technique

[0002] MVR, that is, a mechanical vapor recompression evaporator, is an energy-efficient evaporation device. Its working principle is based on the vapor recompression technology of thermodynamics, and it is mainly used in the fields of industrial wastewater treatment, chemical product concentration, food processing, pharmaceuticals, seawater desalination, etc.

[0003] Many liquids need to be evaporated multiple times to be concentrated to an appropriate concentration. The existing MVR evaporators are not easy to sample the evaporated liquid to detect its concentration, which will result in a long sampling time and reduce the working efficiency of the MVR evaporator. Content of the Utility Model

[0004] The utility model provides an MVR evaporation concentration device, which can quickly complete the sampling of the concentrated liquid in the evaporation tank, thereby improving the working efficiency of the MVR evaporator.

[0005] To achieve the above object, an MVR evaporation concentration device is provided, including an evaporation tank: a sampling mechanism is arranged on the cylindrical surface of the evaporation tank. The sampling mechanism includes an air pump, a piston rod, a pull plate, a moving shaft, a connecting pipe, a sampling pipe and a piston column. The connecting pipe is fixedly connected to the cylindrical surface of the evaporation tank, and the connecting pipe communicates with the inside of the evaporation tank. The air pump is fixedly connected to the cylindrical surface of the evaporation tank, the piston rod is fixedly connected to the output end of the air pump, the pull plate is fixedly connected to the end face of the piston rod away from the air pump, the piston column is slidably connected to the inner cylindrical surface of the connecting pipe, the moving shaft is fixedly connected between the pull plate and the piston column, and the sampling pipe is fixedly connected to the cylindrical surface of the connecting pipe, and the sampling pipe communicates with the inside of the connecting pipe. By arranging the air cylinder and the piston rod, it is convenient to drive the pull plate, the sliding shaft and the piston column to move. By arranging the piston column, it is convenient to control the communication situation between the sampling pipe and the connecting pipe. By arranging the sampling pipe, it is convenient for the liquid in the evaporation tank to flow out, so as to detect the concentration of the liquid inside the evaporation tank.

[0006] According to the described MVR evaporation concentration device, a raw material tank is arranged on the upper surface of the evaporation tank, a tube bundle is arranged on the lower surface of the raw material tank, the tube bundle communicates with the inside of the raw material tank, and the tube bundle is inside the evaporation tank. By arranging the tube bundle, it is convenient for the raw material tank to flow downward along its inside and exchange heat with high-temperature gas during this process.

[0007] According to the described MVR evaporation concentration device, a first ventilation pipe is fixedly connected to the cylindrical surface of the raw material tank, and the first ventilation pipe is fixedly connected to a condensation tank away from the raw material tank.

[0008] According to the described MVR evaporation and concentration equipment, a second ventilation pipe is fixedly connected to the cylindrical surface of the condensation tank. The second ventilation pipe is fixedly connected to a compressor away from the condensation tank. A third ventilation pipe is fixedly connected to the side surface of the compressor, and the other end of the third ventilation pipe leads into the evaporation tank. The compressor is provided to facilitate the pressurization of the used steam.

[0009] According to the described MVR evaporation and concentration equipment, an infusion pipe is fixedly connected to the lower surface of the evaporation tank. The other end of the infusion pipe leads into the raw material tank. A second stop valve is provided near the evaporation tank on the infusion pipe, and a water pump is provided at a position away from the second stop valve on the infusion pipe. The water pump and the infusion pipe are provided to facilitate the transportation of the liquid in the evaporation tank to the raw material tank, thereby realizing the multiple concentration of the liquid.

[0010] According to the described MVR evaporation and concentration equipment, a first outflow pipe is provided on the lower surface of the evaporation tank, and a first stop valve is provided at the middle position of the first outflow pipe. A second outflow pipe is provided on the lower surface of the condensation tank, and a third stop valve is provided at the middle position of the second outflow pipe.

[0011] According to the described MVR evaporation and concentration equipment, an exhaust pipe is provided on the cylindrical surface of the evaporation tank, and a pressure reducing valve is provided in the middle of the exhaust pipe. The pressure reducing valve and the exhaust pipe are provided to facilitate avoiding the over-standard pressure in the evaporation tank.

[0012] According to the described MVR evaporation and concentration equipment, a steam inlet pipe is provided on the cylindrical surface of the third ventilation pipe, and the other end of the steam inlet pipe is connected to a steam generator.

[0013] The beneficial effects of the present utility model: By providing a sampling mechanism, it is possible to quickly complete the sampling of the concentrated liquid in the evaporation tank, thereby improving the working efficiency of the MVR evaporator.

[0014] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0016] Figure 1 It is a schematic diagram of the overall structure of an MVR evaporation and concentration equipment of the present utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the evaporation tank of an MVR evaporation and concentration equipment of the present utility model;

[0018] Figure 3Schematic structural diagram of the sampling mechanism of an MVR evaporation and concentration device of the present utility model;

[0019] Figure 4 Schematic cross-sectional structural diagram of the piston column mating part of an MVR evaporation and concentration device of the present utility model.

[0020] Legend description:

[0021] 1. Evaporation tank; 2. First stop valve; 3. First outflow pipe; 4. Sampling mechanism; 401. Air pump; 402. Piston rod; 403. Pulling plate; 404. Moving shaft; 405. Connecting pipe; 406. Sampling pipe; 407. Piston column; 5. Liquid delivery pipe; 6. Second stop valve; 7. Water pump; 8. Pressure reducing valve; 9. Exhaust pipe; 10. Raw material tank; 11. First ventilation pipe; 12. Condensation tank; 13. Third stop valve; 14. Second outflow pipe; 15. Second ventilation pipe; 16. Compressor; 17. Third ventilation pipe; 18. Steam inlet pipe; 19. Tube bundle. Specific implementation manners

[0022] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it should not be construed as a limitation on the protection scope of the present utility model.

[0023] Referring to Figures 1 to 4 , an MVR evaporation and concentration device according to an embodiment of the present utility model includes an evaporation tank 1. A sampling mechanism 4 is provided on the cylindrical surface of the evaporation tank 1. The sampling mechanism 4 includes an air pump 401, a piston rod 402, a pulling plate 403, a moving shaft 404, a connecting pipe 405, a sampling pipe 406 and a piston column 407. The connecting pipe 405 is fixedly connected to the cylindrical surface of the evaporation tank 1, and the connecting pipe 405 communicates with the inside of the evaporation tank 1. The air pump 401 is fixedly connected to the cylindrical surface of the evaporation tank 1. The piston rod 402 is fixedly connected to the output end of the air pump 401. The pulling plate 403 is fixedly connected to the end face of the piston rod 402 away from the air pump 401. The piston column 407 is slidably connected to the inner cylindrical surface of the connecting pipe 405. The moving shaft 404 is fixedly connected between the pulling plate 403 and the piston column 407. The sampling pipe 406 is fixedly connected to the cylindrical surface of the connecting pipe 405, and the sampling pipe 406 communicates with the inside of the connecting pipe 405. In the normal state, the piston column 407 blocks the through hole between the sampling pipe 406 and the connecting pipe 405. After the piston column 407 moves outward and releases the blockage of the through hole between the sampling pipe 406 and the connecting pipe 405, the liquid in the evaporation tank 1 will flow out from the sampling pipe 406. The diameter of the sampling pipe 406 should not be too large to avoid waste caused by excessive outflow of liquid.

[0024] The lower surface of the evaporation tank 1 is fixedly connected to a liquid infusion tube 5 , the other end of which is passed into the raw material tank 10 . A second stop valve 6 is provided near the evaporation tank 1 , and a water pump 7 is provided away from the second stop valve 6 .

[0025] A first outflow pipe 3 is arranged on the lower surface of the evaporator 1, and a first stop valve 2 is arranged in the middle of the first outflow pipe 3. A second outflow pipe 14 is arranged on the lower surface of the condenser 12, and a third stop valve 13 is arranged in the middle of the second outflow pipe 14. An exhaust pipe 9 is arranged on the cylindrical surface of the evaporator 1, and a pressure reducing valve 8 is arranged in the middle of the exhaust pipe 9. When the air pressure in the evaporator 1 is too high, the gas will be discharged from the exhaust pipe 9, thereby ensuring that the air pressure in the evaporator 1 will not exceed the standard.

[0026] A raw material tank 10 is disposed on the upper surface of the evaporation tank 1 , and a tube bundle 19 is disposed on the lower surface of the raw material tank 10 . The tube bundle 19 is communicated with the interior of the raw material tank 10 , and the tube bundle 19 is inside the evaporation tank 1 .

[0027] The cylindrical surface of the raw material tank 10 is fixedly connected to the first ventilation pipe 11, the first ventilation pipe 11 is fixedly connected to the condensation tank 12 away from the raw material tank 10, the cylindrical surface of the condensation tank 12 is fixedly connected to the second ventilation pipe 15, the second ventilation pipe 15 is fixedly connected to the compressor 16 away from the condensation tank 12, the side surface of the compressor 16 is fixedly connected to the third ventilation pipe 17, the other end of the third ventilation pipe 17 passes into the evaporation tank 1, after the gas in the evaporation tank 1 flows into the condensation tank 12, the water vapor in the gas will condense and deposit at the bottom of the condensation tank 12, and the remaining gas will be sucked into the compressor 16.

[0028] A steam inlet pipe 18 is disposed on the cylindrical surface of the third ventilation pipe 17 , and the other end of the steam inlet pipe 18 is connected to a steam generator, which will add a small amount of high-temperature steam to the evaporation tank 1 .

[0029] Working principle: When sampling, start the air pump 401 to drive the piston rod 402 to drive the pull plate 403 to move, thereby driving the moving shaft 404 and the piston column 407 to move away from the evaporation tank 1. When the piston column 407 moves to release the blockage of the sampling tube 406, the liquid in the evaporation tank 1 will flow out of the sampling tube 406 to the outside. When the sampling is completed, the moving shaft 404 and the piston column 407 are moved to their original positions by the air pump 401, thereby blocking the connection between the sampling tube 406 and the connecting tube 405.

[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An MVR evaporation concentration device, characterized in that: The invention comprises an evaporation tank (1), wherein a sampling mechanism (4) is arranged on the cylindrical surface of the evaporation tank (1), and the sampling mechanism (4) comprises an air pump (401), a piston rod (402), a pull plate (403), a movable shaft (404), a connecting pipe (405), a sampling pipe (406) and a piston column (407), wherein the connecting pipe (405) is fixedly connected to the cylindrical surface of the evaporation tank (1), the connecting pipe (405) is communicated with the inside of the evaporation tank (1), and the air pump (401) is fixedly connected to the cylindrical surface of the evaporation tank (1). The piston rod (402) is fixedly connected to the output end of the air pump (401), the pull plate (403) is fixedly connected to the end face of the piston rod (402) away from the air pump (401), the piston column (407) is slidably connected to the inner cylindrical surface of the connecting tube (405), the movable shaft (404) is fixedly connected between the pull plate (403) and the piston column (407), the sampling tube (406) is fixedly connected to the cylindrical surface of the connecting tube (405), and the sampling tube (406) and the connecting tube (405) are connected to each other.

2. The MVR evaporation concentration equipment according to claim 1, characterized in that: A raw material tank (10) is arranged on the upper surface of the evaporation tank (1), and a tube bundle (19) is arranged on the lower surface of the raw material tank (10); the tube bundle (19) is communicated with the interior of the raw material tank (10), and the tube bundle (19) is inside the evaporation tank (1).

3. The MVR evaporation concentration equipment according to claim 2, characterized in that: The cylindrical surface of the raw material tank (10) is fixedly connected to a first ventilation pipe (11), and the first ventilation pipe (11) is fixedly connected to a condensation tank (12) away from the raw material tank (10).

4. The MVR evaporation concentration equipment according to claim 3, characterized in that: The cylindrical surface of the condensing tank (12) is fixedly connected to a second ventilation pipe (15), the second ventilation pipe (15) is fixedly connected to a compressor (16) away from the condensing tank (12), the side surface of the compressor (16) is fixedly connected to a third ventilation pipe (17), and the other end of the third ventilation pipe (17) leads to the interior of the evaporating tank (1).

5. The MVR evaporation concentration equipment according to claim 1, characterized in that: The lower surface of the evaporation tank (1) is fixedly connected to a liquid infusion tube (5), the other end of the liquid infusion tube (5) is passed into a raw material tank (10), a second stop valve (6) is arranged near the evaporation tank (1) of the liquid infusion tube (5), and a water pump (7) is arranged far from the second stop valve (6) of the liquid infusion tube (5).

6. The MVR evaporation concentration equipment according to claim 3, characterized in that: A first outflow pipe (3) is arranged on the lower surface of the evaporation tank (1), and a first stop valve (2) is arranged in the middle of the first outflow pipe (3); a second outflow pipe (14) is arranged on the lower surface of the condensation tank (12), and a third stop valve (13) is arranged in the middle of the second outflow pipe (14).

7. The MVR evaporation concentration equipment according to claim 1, characterized in that: An exhaust pipe (9) is arranged on the cylindrical surface of the evaporation tank (1), and a pressure reducing valve (8) is arranged in the middle of the exhaust pipe (9).

8. The MVR evaporation and concentration equipment according to claim 4, characterized in that: A steam inlet pipe (18) is provided on the cylindrical surface of the third ventilation pipe (17), and the other end of the steam inlet pipe (18) is connected to the steam generator.

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