Tobacco leaf vacuum moisture regaining machine of water-saving type vacuum device

Abstract

The utility model relates to the technical field of tobacco leaf processing in the tobacco industry, in particular to a tobacco leaf vacuum moisture regaining machine of a water-saving type vacuum device, which comprises a vacuum pipeline, the vacuum pipeline comprises a moisture regaining box body, a first pipeline is arranged on one side of the moisture regaining box body, and a gas filter is arranged at one end of the first pipeline. A refrigerant pipeline is arranged on one side of the gas filter, a vacuum pump set is arranged on one side of the refrigerant pipeline, a water circulation pump set is arranged on one side of the vacuum pump set, and a water circulation pipeline is arranged on one side of the water circulation pump set. According to the tobacco leaf vacuum moisture regaining machine of the water-saving type vacuum device, gas pumped out of the vacuum box body is finely filtered, tobacco impurities are reduced, good water quality of the circulating water cabinet is facilitated, condensate water is supplied in a centralized mode, temperature and flow stability of working water is facilitated, the condensate water can be recycled, and energy is saved. The requirements of the industry on energy conservation and emission reduction are met.

Description

Technical Field

[0001] This utility model relates to the field of tobacco leaf processing technology in the tobacco industry, specifically to a water-saving vacuum device for tobacco leaf vacuum rehumidification. Background Technology

[0002] A tobacco vacuum rehumidifier is a tobacco processing equipment used to moisten and soften tobacco leaves for subsequent processing. It also has the functions of killing insects and eggs, reducing the green and impure smell of tobacco leaves, and improving the color and taste of tobacco leaves. It has a wide range of applications in the tobacco industry.

[0003] With the increasing emphasis on energy conservation and emission reduction in the industry, mechanical vacuum pumps are being used more and more. However, the working medium of vacuum rehumidifiers contains a large amount of water vapor, which is precisely the advantage of water ring vacuum pumps. Currently, water ring vacuum pumps used in the industry have two ways of supplying working water: either using soft water or using cooling water from an outdoor water system. When using soft water, the water is discharged directly after operation, resulting in significant water consumption. When using cooling water from an outdoor water system, the tobacco has a high impurity content, and the flow parts are prone to corrosion and scaling. After a period of use, the working capacity of the equipment will decrease significantly. Therefore, there is an urgent need for a water-saving vacuum device for tobacco vacuum rehumidifiers to improve the above problems. Summary of the Invention

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to propose a water-saving vacuum device for tobacco leaf vacuum rehumidification, in order to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a water-saving vacuum device for tobacco leaf vacuum rehumidification, including a vacuum pipeline. The vacuum pipeline includes a rehumidification chamber. A first pipe is provided on one side of the rehumidification chamber. A gas filter is provided at one end of the first pipe. A refrigerant pipeline is provided on one side of the gas filter. A vacuum pump group is provided on one side of the refrigerant pipeline. A water circulation pump group is provided on one side of the vacuum pump group. A water circulation pipeline is provided on one side of the water circulation pump group.

[0007] The present invention is further configured such that: the refrigerant pipeline includes a refrigeration unit, a cold storage tank is provided on one side of the refrigeration unit, a low-temperature circulating pump is provided on the primary side of the cold storage tank, and a vapor trap is provided on the primary side of the low-temperature circulating pump.

[0008] The present invention is further configured such that: the vacuum pump group includes a main vacuum pump, an intermediate vacuum pump is provided on one side of the main vacuum pump, a gas cooler is provided on one side of the intermediate vacuum pump, a bypass pipe is provided on one side of the gas cooler, and a bypass valve is provided on the outer surface of the bypass pipe.

[0009] The present invention is further configured such that: the water circulation pump group includes a first water ring vacuum pump, a gas-water separator is provided on one side of the first water ring vacuum pump, and a second water ring vacuum pump is provided on one side of the gas-water separator.

[0010] The present invention is further configured such that: the water circulation pipeline includes a circulating water tank, the circulating water tank is provided with a siphon pipe inside, water pumps are provided on both sides of the circulating water tank, a heat exchanger is provided on one side of the water pump, and a water collection tank is provided on one side of the heat exchanger.

[0011] By adopting the above technical solution, condensate can be circulated.

[0012] The present invention is further configured such that: a self-controlled main vacuum valve is provided on the outer surface of the first pipe, a first vacuum valve is provided on the top of the first water ring vacuum pump, a second vacuum valve is provided on the top of the second water ring vacuum pump, and the rehumidification chamber, the self-controlled vacuum valve, the gas filter, the refrigerant pipeline, the vacuum pump group and the water circulation pump group are all connected through the first pipe.

[0013] The present invention is further configured such that: a second pipe is provided on one side of the circulating water tank, and the water collection tank, gas-water separator, gas cooler, vacuum pump group and heat exchanger are all connected through the second pipe; a third pipe is provided on one side of the second pipe; a water filter is provided on the outer surface of the third pipe; and the circulating water tank, water filter, water pump, water circulation pump group, gas cooler, vacuum pump group, heat exchanger, gas filter and steam trap are all connected through the third pipe.

[0014] By adopting the above technical solution, condensate can be recycled.

[0015] The present invention is further configured such that: a fourth pipe is provided on one side of the gas-water separator, a ball valve is provided on the outer surface of the fourth pipe, a check valve is provided on one side of the ball valve, and the gas-water separator is connected to the circulating water tank through the fourth pipe.

[0016] Adopting the above technical solutions is beneficial to energy utilization.

[0017] In summary, the beneficial technical effects of this utility model are as follows:

[0018] 1. The water-saving vacuum device for tobacco vacuum rehumidification uses finely filtered gas extracted from the vacuum chamber to reduce tobacco impurities, which is beneficial to the good water quality of the circulating water tank. Furthermore, the circulating water tank centrally supplies cooling water, which helps stabilize the temperature and flow of the working water, facilitates equipment maintenance and repair, and makes the construction site neat and beautiful.

[0019] 2. The condensate from the steam trap of this water-saving vacuum device for tobacco leaf vacuum rehumidification has a very low temperature. Direct discharge into the circulating water tank is beneficial for energy utilization and enables the recycling of condensate, greatly reducing water waste and meeting the overall requirements of national and industry energy conservation and emission reduction.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the refrigerant pipeline structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the vacuum pump unit of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the water circulation pump set of this utility model;

[0026] Figure 5 This is a schematic diagram of the water circulation pipeline of this utility model.

[0027] In the diagram: 1. Vacuum piping; 2. Rehumidification chamber; 3. First pipe; 4. Gas filter; 5. Refrigerant piping; 6. Vacuum pump unit; 7. Water circulation pump unit; 8. Water circulation piping; 9. Refrigeration unit; 10. Cold storage tank; 11. Low-temperature circulation pump; 12. Steam trap; 13. Main vacuum pump; 14. Intermediate vacuum pump; 15. Gas cooler; 16. Bypass pipe; 17. Bypass valve; 18. First water ring vacuum pump; 19. Gas-water separator; 20. Second water ring vacuum pump; 21. Circulating water tank; 22. Siphon pipe; 23. Water pump; 24. Heat exchanger; 25. Water collection tank; 26. Automatic main vacuum valve; 27. First vacuum valve; 28. Second vacuum valve; 29. ​​Second pipe; 30. Third pipe; 31. Water filter; 32. Fourth pipe; 33. Ball valve; 34. Check valve. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example 1

[0029] Reference Figures 1 to 5 This utility model discloses a water-saving vacuum device for tobacco leaf vacuum rehumidification, comprising a vacuum pipeline 1, a rehumidification chamber 2, a first pipe 3 on one side of the rehumidification chamber 2, a gas filter 4 at one end of the first pipe 3, a refrigerant pipeline 5 on one side of the gas filter 4, a vacuum pump group 6 on one side of the refrigerant pipeline 5, a water circulation pump group 7 on one side of the vacuum pump group 6, and a water circulation pipeline 8 on one side of the water circulation pump group 7. The connection sequence of the vacuum pipeline 1 is as follows: the rehumidification chamber 2 is connected to the inlet of the gas filter 4 via a self-controlled main vacuum valve 26; the outlet of the gas filter 4 is connected to the inlet of a steam trap 12; the outlet of the steam trap 12 is connected to the suction port of the main vacuum pump 13; and the outlet of the main vacuum pump 13 is connected to the suction port of an intermediate vacuum pump 14. The outlets of the intermediate vacuum pump 14 and the gas cooler 15 are connected. The outlet of the gas cooler 15 is connected to the first vacuum valve 27 and the second vacuum valve 28. The first water ring vacuum pump 18 and the second water ring vacuum pump 20 are connected in parallel. The first vacuum valve 27 and the second vacuum valve 28 are located in the upstream pipelines of the first water ring vacuum pump 18 and the second water ring vacuum pump 20, respectively. The exhaust ports of the first water ring vacuum pump 18 and the second water ring vacuum pump 20 are connected to the gas-water separator 19. The exhaust port of the gas-water separator 19 is directly connected to the atmosphere. A bypass pipe 16 is set between the suction port of the main vacuum pump 13 and the outlet of the gas cooler 15. A bypass valve 17 is set on the bypass pipe 16. That is to say, the bypass pipe 16 and the bypass valve 17 are in parallel with respect to the main vacuum pump 13 and the intermediate vacuum pump 14.

[0030] Reference Figures 1 to 5The refrigerant pipeline 5 includes a refrigeration unit 9. A cold storage tank 10 is installed on one side of the refrigeration unit 9. A low-temperature circulating pump 11 is installed at the primary end of the cold storage tank 10. A vapor trap 12 is installed at the primary end of the low-temperature circulating pump 11. The connection sequence of the refrigerant pipeline 5 is as follows: the outlet of the cold storage tank 10 is connected to the refrigerant inlet of the vapor trap 12 via the low-temperature circulating pump 11; the refrigerant inlet of the cold storage tank 10 is connected to the refrigerant outlet of the vapor trap 12; and the cold storage tank 10 is connected to the refrigeration unit 9. Vacuum pump group 6 includes a main vacuum pump 13, an intermediate vacuum pump 14 is provided on one side of the main vacuum pump 13, a gas cooler 15 is provided on one side of the intermediate vacuum pump 14, a bypass pipe 16 is provided on one side of the gas cooler 15, and a bypass valve 17 is provided on the outer surface of the bypass pipe 16. Water circulation pump group 7 includes a first water ring vacuum pump 18, a gas-water separator 19 is provided on one side of the first water ring vacuum pump 18, and a second water ring vacuum pump 20 is provided on one side of the gas-water separator 19.

[0031] Reference Figures 1 to 5 The water circulation pipeline 8 includes a circulating water tank 21, inside which is a siphon pipe 22. Water pumps 23 are installed on both sides of the circulating water tank 21. A heat exchanger 24 is installed on one side of each water pump 23, and a water collection tank 25 is installed on the other side of the heat exchanger 24, enabling the circulation of condensate. The connection sequence of the water pipeline is as follows: the circulating water tank 21 is divided into cold and hot zones. The pipes connected to the hot zone are: the outlet of the water collection tank 25, the outlet of the gas-water separator 19, the outlet of the gas cooler 15, the main vacuum pump and the intermediate vacuum pump 14, the condensate outlet of the transmission box, and the heat source inlet of the heat exchanger 24. A siphon pipe 22 is installed in the hot zone of the circulating water tank 21, connecting to the outlet pipeline of the gas-water separator 19. The cold zone supplies water to eight units via a water filter 31 and water pumps 23. The water usage points include the working water inlet of the first water ring vacuum pump 18, the working water inlet of the second water ring vacuum pump 20, the water inlet of the gas cooler 15, the water inlets of the front and rear end caps of the vacuum main pump, the water inlets of the front and rear end caps of the intermediate vacuum pump 14, and the heat source outlet of the heat exchanger 24. Of course, the circulating water tank 21 is also equipped with a water replenishment inlet, overflow and drain outlets, a liquid level controller, a temperature sensor, etc. The bottom outlet of the gas filter 4 and the bottom outlet of the steam trap 12 are connected to the inlet of the condensate collection tank 25. It should be noted that there is no water pump 23 between the gas-water separator 19 and the circulating water tank 21. Instead, only a ball valve 33 and a check valve 34 are installed in the pipeline. The water in the gas-water separator 19 enters the circulating water tank 21 smoothly through the siphon pipe 22 in the circulating water tank 21.

[0032] Reference Figures 1 to 5An automatic main vacuum valve 26 is installed on the outer surface of the first pipe 3. A first vacuum valve 27 is installed on the top of the first water ring vacuum pump 18. A second vacuum valve 28 is installed on the top of the second water ring vacuum pump 20. The rehumidification chamber 2, the automatic vacuum valve, the gas filter 4, the refrigerant pipeline 5, the vacuum pump group 6, and the water circulation pump group 7 are all connected through the first pipe 3. A second pipe 29 is installed on one side of the circulating water tank 21. The water collection tank 25, the gas-water separator 19, the gas cooler 15, the vacuum pump group 6, and the heat exchanger 24 are all connected through the second pipe 29. A third pipe 30 is installed on one side of the second pipe 29. A water filter 31 is installed on the outer surface of the third pipe 30. Furthermore, the circulating water tank 21, water filter 31, water pump 23, water circulation pump group 7, gas cooler 15, vacuum pump group 6, heat exchanger 24, gas filter 4 and steam trap 12 are all connected through the third pipe 30, which enables the condensate to be recycled, greatly reducing water waste and meeting the overall requirements of the state and industry for energy conservation and emission reduction. A fourth pipe 32 is provided on one side of the gas-water separator 19, a ball valve 33 is provided on the outer surface of the fourth pipe 32, and a check valve 34 is provided on one side of the ball valve 33. The gas-water separator 19 is connected to the circulating water tank 21 through the fourth pipe 32, which is conducive to energy utilization and meets the overall requirements of the state and industry for energy conservation and emission reduction.

[0033] The implementation principle of this embodiment is as follows:

[0034] When the tobacco vacuum rehumidifier of this water-saving vacuum device is running, firstly open the bypass valve 17, the first vacuum valve 27, and the second vacuum valve 28, then start the first water ring vacuum pump 18 and the second water ring vacuum pump 20. When the vacuum degree of the chamber reaches 30 kPa, close the bypass valve 17, start the water pump 23, and the gas cooler 15 will work normally. Then close the second vacuum valve 28 and the second water ring vacuum pump 20, and start the intermediate pump. When the vacuum degree of the chamber reaches 6 kPa, start the main pump and evacuate to the set vacuum degree or set temperature. The first evacuation is then complete. The working water for the first water ring vacuum pump 18 and the second water ring vacuum pump 20 is supplied by the circulating water tank 21. After operation, the water temperature reaches about 40°C and is discharged into the gas separator. Then, the hot water enters the hot water area of ​​the circulating water tank 21 and is cooled down by the water pump 23 through the heat exchanger 24, thus recycling the water resources. The water pump 23 supplies water to each water point in a centralized water supply mode. The condensate in the steam trap 12 has a lower temperature and enters the hot water side of the circulating water tank 21. This reduces the number of times the water pump 23 starts and stops, because the start and stop of the water pump 23 depends on the collected temperature signal.

[0035] Compared with the prior art, the present invention has the following advantages:

[0036] 1. The tobacco vacuum rehumidifier of this water-saving vacuum device has gas extracted from the vacuum chamber that is finely filtered to reduce tobacco impurities, which is beneficial to the good water quality of the circulating water tank 21. In addition, the circulating water tank 21 centrally supplies cooling water, which is conducive to the stability of the working water temperature and flow rate, facilitates equipment maintenance and repair, and makes the construction site neat and beautiful.

[0037] 2. The condensate temperature of the tobacco vacuum rehumidifier in this water-saving vacuum device is very low. It can be directly discharged into the circulating water tank 21, which is conducive to energy utilization and can recycle the condensate, greatly reducing water waste and meeting the overall requirements of the country and industry for energy conservation and emission reduction.

[0038] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A water-saving vacuum device for tobacco leaf vacuum rehumidification, characterized in that: The system includes a vacuum pipeline (1), which includes a rehumidification chamber (2). A first pipe (3) is provided on one side of the rehumidification chamber (2). A gas filter (4) is provided at one end of the first pipe (3). A refrigerant pipeline (5) is provided on one side of the gas filter (4). A vacuum pump group (6) is provided on one side of the refrigerant pipeline (5). A water circulation pump group (7) is provided on one side of the vacuum pump group (6). A water circulation pipeline (8) is provided on one side of the water circulation pump group (7).

2. The tobacco vacuum rehumidifier of the water-saving vacuum device according to claim 1, characterized in that: The refrigerant pipeline (5) includes a refrigeration unit (9), a cold storage tank (10) is provided on one side of the refrigeration unit (9), a low temperature circulating pump (11) is provided on one side of the cold storage tank (10), and a steam trap (12) is provided on one side of the low temperature circulating pump (11).

3. The tobacco vacuum rehumidifier of a water-saving vacuum device according to claim 2, characterized in that: The vacuum pump assembly (6) includes a main vacuum pump (13), an intermediate vacuum pump (14) is provided on one side of the main vacuum pump (13), a gas cooler (15) is provided on one side of the intermediate vacuum pump (14), a bypass pipe (16) is provided on one side of the gas cooler (15), and a bypass valve (17) is provided on the outer surface of the bypass pipe (16).

4. A water-saving vacuum device for tobacco leaf vacuum rehumidification according to claim 3, characterized in that: The water circulation pump set (7) includes a first water ring vacuum pump (18), a gas-water separator (19) is provided on one side of the first water ring vacuum pump (18), and a second water ring vacuum pump (20) is provided on one side of the gas-water separator (19).

5. A water-saving vacuum device for tobacco leaf vacuum rehumidification according to claim 4, characterized in that: The water circulation pipeline (8) includes a circulating water tank (21), inside which a siphon pipe (22) is installed. Water pumps (23) are installed on both sides of the circulating water tank (21), a heat exchanger (24) is installed on one side of the water pump (23), and a water collection tank (25) is installed on one side of the heat exchanger (24).

6. A water-saving vacuum device for tobacco leaf vacuum rehumidification according to claim 5, characterized in that: The outer surface of the first pipe (3) is provided with a self-controlled main vacuum valve (26), the top of the first water ring vacuum pump (18) is provided with a first vacuum valve (27), the top of the second water ring vacuum pump (20) is provided with a second vacuum valve (28), and the rehumidification box (2), the self-controlled vacuum valve, the gas filter (4), the refrigerant pipeline (5), the vacuum pump group (6) and the water circulation pump group (7) are all connected through the first pipe (3).

7. A water-saving vacuum device for tobacco leaf vacuum rehumidification according to claim 5, characterized in that: A second pipe (29) is provided on one side of the circulating water tank (21), and the water tank (25), gas-water separator (19), gas cooler (15), vacuum pump group (6) and heat exchanger (24) are all connected through the second pipe (29). A third pipe (30) is provided on one side of the second pipe (29), and a water filter (31) is provided on the outer surface of the third pipe (30). The circulating water tank (21), water filter (31), water pump (23), water circulation pump group (7), gas cooler (15), vacuum pump group (6), heat exchanger (24), gas filter (4) and steam trap (12) are all connected through the third pipe (30).

8. A water-saving vacuum device for tobacco leaf vacuum rehumidification according to claim 7, characterized in that: A fourth pipe (32) is provided on one side of the gas-water separator (19), a ball valve (33) is provided on the outer surface of the fourth pipe (32), a check valve (34) is provided on one side of the ball valve (33), and the gas-water separator (19) is connected to the circulating water tank (21) through the fourth pipe (32).

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