Condensate water recovery device

Abstract

The utility model discloses a condensate water recovery device which comprises a UHT sterilization machine body, the UHT sterilization machine body is connected with a condensate water discharge pipe and a feed liquid pipe, the outer wall of the feed liquid pipe is sleeved with a steam heating barrel, one end of the steam heating barrel is connected with a steam conveying pipe, one end of the steam conveying pipe is connected with a collecting cylinder, and the collecting cylinder is connected with a water pump. The top of the collecting cylinder is connected with one end of a condensate water discharging pipe, first electromagnetic valves are arranged on the condensate water discharging pipe and the steam conveying pipe, a pressure gauge, a high liquid level switch, a middle liquid level switch and a low liquid level switch are arranged on one side of the collecting cylinder, a liquid discharging pipe is connected to the bottom of the collecting cylinder, and a liquid discharging pump and a second electromagnetic valve are arranged on the liquid discharging pipe. A plate heat exchanger is connected to one side of the liquid discharge pipe, a liquid outlet pipe is arranged on one side of the plate heat exchanger, and the plate heat exchanger is connected with one end of a feed liquid pipe. According to the device, the steam consumption can be reduced in the operation process of the UHT sterilization machine body, and meanwhile, the water quantity is reduced by recycling condensed water, so that the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of condensed water recovery, in particular to a condensed water recovery device. Background Art

[0002] After steam releases its latent heat of vaporization in steam-using equipment, it turns into condensed water and is discharged through a steam trap. The condensed water discharged from different steam-using equipment is collected in a water collection tank through a recovery pipe network and sent to a boiler or other heat-using places, such as a deaerator, by a condensed water recovery device. This is the condensed water recovery technology, and the UHT sterilizer will produce a large amount of condensed water during use.

[0003] At present, UHT sterilizers use purchased steam for heating and sterilization. During production, about 50 tons of steam are used every day, and about 40 tons of 90°C condensed water are generated. These hot condensed water cannot be used directly, and a large amount of water vapor will be emitted if it is directly discharged, which affects the production environment and causes a huge waste of water and heat. At the same time, the incoming material heating of the UHT sterilizer also needs to be preheated before the steam heating stage, and the heat feed liquid needs to be supplemented, which increases the production cost and needs to be improved. Utility Model Content

[0004] The utility model aims to provide a condensed water recovery device to solve the problem that a large amount of condensed water is wasted in the production process of the UHT sterilizer and the production cost is increased as mentioned in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a condensate recovery device, comprising a UHT sterilizer body, a condensate discharge pipe and a liquid feed pipe connected to the UHT sterilizer body, an outer wall of the liquid feed pipe is sleeved with a steam heating cylinder, one end of the steam heating cylinder is connected to a steam delivery pipe, one end of the steam delivery pipe is connected to a collecting cylinder, the top of the collecting cylinder is connected to one end of the condensate discharge pipe, a first solenoid valve is provided on the condensate discharge pipe and the steam delivery pipe, a pressure gauge, a high liquid level switch, a middle liquid level switch and a low liquid level switch are provided on one side of the collecting cylinder, a drain pipe is connected to the bottom of the collecting cylinder, a drain pump and a second solenoid valve are provided on the drain pipe, a plate heat exchanger is connected to one side of the drain pipe, a liquid outlet pipe is provided on one side of the plate heat exchanger, and the plate heat exchanger is connected to one end of the liquid feed pipe.

[0006] Preferably, the other end of the steam heating cylinder is connected to an exhaust pipe, the steam heating cylinder is welded and fixed to the outer wall of the liquid feed pipe, a feeding pump is provided on the liquid feed pipe, one end of the liquid feed pipe passes through one side of the plate heat exchanger and exits from the other side of the plate heat exchanger.

[0007] Preferably, a cover body is fixedly connected to the top of the collection cylinder, and a condensate discharge pipe and a steam delivery pipe are fixedly connected to the cover body.

[0008] Preferably, a connecting rod is fixedly connected to the bottom of the cover body, and a first filter screen and a second filter screen are fixedly connected to the bottom of the connecting rod.

[0009] Preferably, the first filter screen is located on top of the second filter screen, and the mesh size of the first filter screen is larger than the mesh size of the second filter screen.

[0010] Preferably, the other side of the collecting cylinder is connected to an overflow pipe, and one end of the overflow pipe is connected to the overflow collecting cylinder.

[0011] Preferably, a high liquid level switch is provided at the bottom of the pressure gauge, a middle liquid level switch is provided at the bottom of the high liquid level switch, and a low liquid level switch is provided at the bottom of the middle liquid level switch. The pressure gauge, high liquid level switch, middle liquid level switch, low liquid level switch and drainage pump are controlled by PLC.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The device can reduce the amount of steam used during the operation of the UHT sterilizer and reduce the amount of water by recycling condensed water, thereby reducing production costs.

[0014] (2) This device can collect the condensed water and steam generated inside the UHT sterilizer. The collected steam can heat the liquid in the liquid pipe of the UHT sterilizer. The collected condensed water can be used to replenish the tower water after cooling, thereby reducing the use of steam. At the same time, the condensed water can be recycled to reduce production costs.

[0015] (3) The device collects the condensed water collected in the collection tank and exchanges heat through a plate heat exchanger, and the plate heat exchanger is connected to the feed liquid pipe of the UHT sterilizer body. Therefore, during the feeding process, the feed liquid is preheated when passing through the plate heat exchanger, thereby achieving the effect of waste heat utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a condensed water recovery device of the utility model;

[0017] Figure 2 This is a cross-sectional view of the connection between the steam heating cylinder and the liquid feed pipe of a condensate recovery device of the utility model;

[0018] Figure 3 The utility model is a condensate recovery device Figure 1 Enlarged view of point A in the middle;

[0019] Figure 4 This is a top view of the connection between a first filter screen and a second filter screen of a condensate water recovery device of the utility model.

[0020] In the figure: 1. UHT sterilizer body; 2. first solenoid valve; 3. steam delivery pipe; 4. condensate discharge pipe; 5. liquid pipe; 6. steam heating cylinder; 7. exhaust pipe; 8. cover; 9. pressure gauge; 10. high liquid level switch; 11. middle liquid level switch; 12. low liquid level switch; 13. collecting cylinder; 14. second solenoid valve; 15. drain pipe; 16. drain pump; 17. overflow pipe; 18. overflow collecting cylinder; 19. plate heat exchanger; 20. liquid outlet pipe; 21. feeding pump; 22. connecting rod; 23. first filter; 24. second filter. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4The utility model provides a technical solution: a condensate recovery device, including a UHT sterilizer body 1, a condensate discharge pipe 4 and a liquid feed pipe 5 are connected to the UHT sterilizer body 1, a steam heating cylinder 6 is sleeved on the outer wall of the liquid feed pipe 5, the other end of the steam heating cylinder 6 is connected to an exhaust pipe 7, the steam heating cylinder 6 is welded and fixed to the outer wall of the liquid feed pipe 5, a feeding pump 21 is arranged on the liquid feed pipe 5, one end of the liquid feed pipe 5 passes through one side of the plate heat exchanger 19 and passes through the other side of the plate heat exchanger 19; this structure can collect the steam discharged from the inside of the collection cylinder 13 by arranging the steam heating cylinder 6, and at the same time heat the liquid feed passing through the inside of the steam heating cylinder 6; the liquid feed can be added to the UHT sterilizer body through the feeding pump 21 1 is processed inside; the condensed water discharged from the collecting cylinder 13 can be heat exchanged and cooled by setting a plate heat exchanger 19, so that the cooled condensed water can be supplied to the tower water; one end of the steam heating cylinder 6 is connected to the steam delivery pipe 3, one end of the steam delivery pipe 3 is connected to the collecting cylinder 13, the top of the collecting cylinder 13 is fixedly connected to the cover 8, and the condensed water discharge pipe 4 and the steam delivery pipe 3 are fixedly connected to the cover 8; this structure can discharge the condensed water generated in the UHT sterilizer body 1 into the collecting cylinder 13 through the condensed water discharge pipe 4; the bottom of the cover 8 is fixedly connected to a connecting rod 22, and the bottom of the connecting rod 22 is fixedly connected to a first filter screen 23 and a second filter screen 24; this structure can discharge the first filter screen 23 and the second filter screen 24 by setting the connecting rod 22 The filter screen 23 and the second filter screen 24 are connected to the cover body 8, so that the first filter screen 23 and the second filter screen 24 can be taken out for cleaning when the cover body 8 is opened; by arranging the first filter screen 23 and the second filter screen 24, impurities in the condensed water can be filtered to prevent the impurities from clogging the drain pipe 15 and the pipe of the plate heat exchanger 19; the first filter screen 23 is located on the top of the second filter screen 24, and the mesh size of the first filter screen 23 is larger than the mesh size of the second filter screen 24; this structure can achieve double filtration efficiency and improve the filtration effect by arranging the first filter screen 23 and the second filter screen 24; the other side of the collection cylinder 13 is connected to the overflow pipe 17, and one end of the overflow pipe 17 is connected to the overflow collection cylinder 18; this structure The structure can discharge condensed water in time by setting an overflow pipe 17, reduce the impact of condensed water on the collecting cylinder 13, and improve the service life of the collecting cylinder 13; the top of the collecting cylinder 13 is connected to one end of the condensed water discharge pipe 4, and the condensed water discharge pipe 4 and the steam delivery pipe 3 are both provided with a first solenoid valve 2, and a pressure gauge 9, a high liquid level switch 10, a middle liquid level switch 11 and a low liquid level switch 12 are provided on one side of the collecting cylinder 13, a high liquid level switch 10 is provided at the bottom of the pressure gauge 9, a middle liquid level switch 11 is provided at the bottom of the high liquid level switch 10, and a low liquid level switch 12 is provided at the bottom of the middle liquid level switch 11, and the pressure gauge 9, the high liquid level switch 10, the middle liquid level switch 11, the low liquid level switch 12 and the discharge pump 16 are controlled by PLC;This structure controls the pressure gauge 9, the high liquid level switch 10, the middle liquid level switch 11 and the low liquid level switch 12 through PLC, so that when the pressure gauge 9 detects that the internal pressure of the collection cylinder 13 is too high, the drainage pump 16 is automatically turned on to discharge the condensed water; when the condensed water level reaches the positions of the high liquid level switch 10, the middle liquid level switch 11 and the low liquid level switch 12 respectively, the drainage pump 16 is turned on to discharge the condensed water, thereby realizing automatic control and ensuring the safety of the collection cylinder 13; a drainage pipe 15 is connected to the bottom of the collection cylinder 13, and the drainage pipe 15 is provided with the drainage pump 16 and the second solenoid valve 14, and one side of the drainage pipe 15 is connected to the plate heat exchanger 19, the plate heat exchanger 19 is connected to the plate heat exchanger 19, and the plate heat exchanger 19 is connected to the plate heat exchanger 19. A liquid outlet pipe 20 is provided on one side of the heat exchanger 19. One end of the liquid outlet pipe 20 of the device is connected to the tower body, and the plate heat exchanger 19 is connected to one end of the liquid feed pipe 5. The device can collect the condensed water and steam generated inside the UHT sterilizer 1. The collected steam can heat the liquid in the liquid feed pipe 5 of the UHT sterilizer 1. The collected condensed water can be used to replenish the tower water after cooling, thereby reducing the use of steam and recycling the condensed water to reduce production costs. The UHT sterilizer 1 of the device is composed of a heating system, a cooling system, a sterilization chamber, a control system and other parts. Since the UHT sterilizer 1 is a prior art, it will not be described in detail here. ;

[0023] Working principle: When the condensed water recovery device is used, first, the condensed water generated inside the UHT sterilizer body 1 is collected into the collection cylinder 13 through the condensed water discharge pipe 4, and part of the steam also enters the collection cylinder 13 during the process of discharging the condensed water. The steam entering the collection cylinder 13 is discharged from the steam delivery pipe 3 to the steam heating cylinder 6, thereby heating the liquid in the liquid pipe 5 inside the steam heating cylinder 6, and the condensed water entering the collection cylinder 13 is filtered by the first filter screen 23 and the second filter screen 24 and stored at the bottom of the collection cylinder 13. When the condensed water level reaches the low and high levels in turn, the condensed water is discharged from the first filter screen 23 and the second filter screen 24. When the liquid level switch 12, the middle liquid level switch 11 and the high liquid level switch 10 are at the position, the drain pump 16 is turned on to discharge the condensed water. During the discharge, the condensed water enters the plate heat exchanger 19 through the drain pipe 15 and then exits from the liquid outlet pipe 20. At the same time, the feed liquid is transported to the inside of the UHT sterilizer body 1 through the feed liquid pipe 5. When the feed liquid passes through the plate heat exchanger 19, it exchanges heat with the high-temperature condensed water in the plate heat exchanger 19, thereby cooling the condensed water and preheating the feed liquid, so that the feed liquid enters the inside of the UHT sterilizer body 1 after being heated, thereby reducing the heating time of the feed liquid after entering the inside of the UHT sterilizer body 1.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A condensate recovery device, comprising a UHT sterilizer body (1), the UHT sterilizer body (1) being connected with a condensate discharge pipe (4) and a liquid feed pipe (5), characterized in that: The outer wall of the liquid-feed pipe (5) is sleeved with a steam heating cylinder (6), one end of the steam heating cylinder (6) is connected to a steam delivery pipe (3), one end of the steam delivery pipe (3) is connected to a collecting cylinder (13), the top of the collecting cylinder (13) is connected to one end of a condensate discharge pipe (4), the condensate discharge pipe (4) and the steam delivery pipe (3) are both provided with a first solenoid valve (2), one side of the collecting cylinder (13) is provided with a pressure gauge (9), a high liquid level switch (10), a middle liquid level switch (11) and a low liquid level switch (12), the bottom of the collecting cylinder (13) is connected to a liquid discharge pipe (15), the liquid discharge pipe (15) is provided with a liquid discharge pump (16) and a second solenoid valve (14), one side of the liquid discharge pipe (15) is connected to a plate heat exchanger (19), one side of the plate heat exchanger (19) is provided with a liquid outlet pipe (20), and the plate heat exchanger (19) is connected to one end of the liquid-feed pipe (5).

2. A condensed water recovery device according to claim 1, characterized in that: The other end of the steam heating cylinder (6) is connected to an exhaust pipe (7), the steam heating cylinder (6) is welded and fixed to the outer wall of the liquid feed pipe (5), a feeding pump (21) is provided on the liquid feed pipe (5), and one end of the liquid feed pipe (5) passes through one side of the plate heat exchanger (19) and exits from the other side of the plate heat exchanger (19).

3. A condensed water recovery device according to claim 1, characterized in that: The top of the collection cylinder (13) is fixedly connected to a cover body (8), and the cover body (8) is fixedly connected to a condensate discharge pipe (4) and a steam delivery pipe (3).

4. A condensed water recovery device according to claim 3, characterized in that: The bottom of the cover body (8) is fixedly connected to a connecting rod (22), and the bottom of the connecting rod (22) is fixedly connected to a first filter screen (23) and a second filter screen (24).

5. A condensed water recovery device according to claim 4, characterized in that: The first filter screen (23) is located on the top of the second filter screen (24), and the mesh size of the first filter screen (23) is larger than the mesh size of the second filter screen (24).

6. A condensed water recovery device according to claim 1, characterized in that: The other side of the collection cylinder (13) is connected to an overflow pipe (17), and one end of the overflow pipe (17) is connected to an overflow collection cylinder (18).

7. A condensed water recovery device according to claim 1, characterized in that: A high liquid level switch (10) is arranged at the bottom of the pressure gauge (9), a middle liquid level switch (11) is arranged at the bottom of the high liquid level switch (10), and a low liquid level switch (12) is arranged at the bottom of the middle liquid level switch (11). The pressure gauge (9), the high liquid level switch (10), the middle liquid level switch (11), the low liquid level switch (12) and the liquid discharge pump (16) are controlled by a PLC.

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