Extraction water recovery energy-saving system

Abstract

The utility model provides an extraction water recovery energy-saving system. The extraction water recovery energy-saving system comprises an extraction water storage tank, a plurality of dry condensate water inlet pipes are fixedly mounted at the top of the pelletizing water storage tank, one side of the top of the pelletizing water storage tank is fixedly communicated with an overflow port, and the overflow port is connected with the extraction water storage tank through a second connecting pipe; the bottom end of the dry condensate water inlet pipe is positioned in the pelletizing water storage tank, and is fixedly communicated with an end pipe; the discharge pipe is connected with the dry condensate water inlet pipe; the buoyancy sealing mechanism is located at the bottom of the end pipe; the evaporation recovery equipment is connected with the extraction water storage tank, and a waste heat recovery mechanism used for discharging steam of the evaporation recovery equipment is arranged at the joint of the evaporation recovery equipment and the extraction water storage tank. A buoyancy sealing mechanism is adopted, after the pelletizing water storage tank is filled with water, receiving of dry condensate water is stopped, overflow caused by excessive water is avoided, and then energy consumption of extraction water recovery is prevented from being increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of extraction water recovery, especially to an extraction water recovery energy-saving system. BACKGROUND

[0002] In the process of pelletizing and drying, the melt will take away about 5% of the pelletizing water when pelletizing, and about 13% of water (without monomer content) will be condensed when drying, so the water condensed by drying is recovered to the pelletizing water storage tank to maintain its long-term full tank state, and the excess 8% of water is recovered to the extraction water storage tank through the overflow port after entering the pelletizing water storage tank.

[0003] After passing through the pelletizing water storage tank, the monomer concentration in the overflow water is about 2-3%, which cannot be directly discharged due to environmental protection requirements, and needs to be discharged into the extraction water storage tank, and then evaporated by the evaporation recovery equipment for evaporation treatment, thereby increasing the energy consumption required for recovery and the energy-saving effect is not good. UTILITY MODEL CONTENTS

[0004] The utility model discloses in order to solve the technical problem of large recovery energy consumption, and provides an extraction water recovery energy-saving system.

[0005] The utility model solves the above-mentioned technical problem through the following technical scheme:

[0006] The utility model provides a kind of extraction water recovery energy-saving system, including extraction water storage tank;Still include: pelletizing water storage tank, the top of the pelletizing water storage tank is fixedly installed with multiple drying condensate water inlet pipes, the top one side of the pelletizing water storage tank is fixedly connected with overflow port, and overflow port is connected with extraction water storage tank by second connecting pipe;The bottom end of the drying condensate water inlet pipe is located in the pelletizing water storage tank, and the bottom end of the drying condensate water inlet pipe is fixedly connected with end pipe;Discharge pipe, the discharge pipe is connected with drying condensate water inlet pipe;Buoyancy sealing mechanism, the buoyancy sealing mechanism is located at the bottom of end pipe, after the water level in the pelletizing water storage tank reaches the position of overflow port, the buoyancy sealing mechanism is blocked to the lower end of the end pipe, and makes discharge pipe and drying condensate water inlet pipe communicate;Evaporation recovery equipment, the evaporation recovery equipment is connected with extraction water storage tank, and evaporation recovery equipment and extraction water storage tank connection place are provided with waste heat recovery mechanism for discharging the steam of evaporation recovery equipment.

[0007] In the technical scheme, the buoyancy sealing mechanism is used, so that the pelletizing water storage tank is filled with water, and the drying condensate water is stopped to be received, to avoid water overflow, thereby avoiding increasing the energy consumption of extraction water recovery.

[0008] Preferably, the top of the pelletizing water storage tank is also fixedly connected with fresh desalted water inlet pipe and pelletizing backwater inlet pipe;The top end of the fresh desalted water inlet pipe is provided with a valve.

[0009] Preferably, the top end of the discharge pipe is fixedly connected with a first connecting pipe, and one end of the first connecting pipe is fixedly connected with one side of the dry condensate water inlet pipe.

[0010] In the technical scheme, the dry condensate water inlet pipes are connected to the discharge pipe through the connecting pipes, so that when the discharge pipe is used to discharge water, the water in all the dry condensate water inlet pipes is concentrated in the discharge pipe and discharged.

[0011] Preferably, the buoyancy sealing mechanism comprises a bottom rod elastically mounted to the inner wall below the top of the cutting water storage tank, the bottom rod is fixedly connected with a sealing disc, and the bottom end of the end pipe is aligned with the sealing disc, and one side of the sealing disc is fixedly mounted with a floating ball.

[0012] In the technical scheme, the floating ball provides buoyancy, and when the water level in the cutting water storage tank reaches a set value, the sealing disc is lifted to be attached to the bottom end of the end pipe to be sealed.

[0013] Preferably, at least one spring is arranged on the top surface of the bottom rod, one end of the spring is fixedly connected with the top surface of the bottom rod, and the other end of the spring is fixedly connected with the inner wall of the top of the cutting water storage tank.

[0014] In the technical scheme, the spring is used to elastically mount the bottom rod to the inner wall of the top of the cutting water storage tank.

[0015] Preferably, a vertical movable rod is fixedly mounted on the top surface of the bottom rod, a vertical positioning cylinder is fixedly connected with the inner wall of the top of the cutting water storage tank, and the movable rod is connected with the positioning cylinder.

[0016] In the technical scheme, the movable rod and the positioning cylinder are used to guide the vertical movement of the bottom rod.

[0017] Preferably, a shielding strip is fixedly mounted on the top surface of the sealing disc, the shielding strip is attached to the inner wall of the dry condensate water inlet pipe, and a through hole is arranged in the shielding strip.

[0018] In the technical scheme, when the sealing disc is in a low position and the bottom end of the end pipe is in an open state, the shielding strip seals the connection between the dry condensate water inlet pipe and the first connecting pipe, and when the sealing disc is in a high position and the bottom end of the end pipe is in a closed state, the connection between the dry condensate water inlet pipe and the first connecting pipe is aligned with the through hole in the shielding strip, so that the connection between the dry condensate water inlet pipe and the first connecting pipe is opened.

[0019] Preferably, a water pump is arranged on one side of the extraction water storage tank, the water pump is connected with the evaporation recovery equipment through a conveying pipe, and the waste heat recovery mechanism is sleeved on the outer wall of the conveying pipe.

[0020] In the technical scheme, the water pump is used to convey the water in the extraction water storage tank to the evaporation recovery equipment through the conveying pipe.

[0021] Preferably, the waste heat recovery mechanism comprises a cylinder, a spiral partition and an air outlet; the cylinder is fixedly sleeved to the outer wall of the conveying pipe, the cylinder is provided with the spiral partition, the spiral partition is sleeved to the outer wall of the conveying pipe, the cylinder is divided into a spiral channel by the outer wall of the conveying pipe and the spiral partition, and the air outlet is fixedly connected to the top of one end of the cylinder and communicates with one end of the channel.

[0022] In the technical scheme, the waste heat recovery mechanism is used for recovering steam heat generated by the evaporation recovery equipment.

[0023] Preferably, the evaporation recovery equipment is connected with a steam pipe, one end of the steam pipe is fixedly connected to the top of one end of the cylinder, and the steam pipe communicates with the end of the channel away from the air outlet.

[0024] In the technical scheme, the steam pipe is used for conveying water vapor into the waste heat recovery mechanism.

[0025] On the basis of common knowledge in the art, the preferred conditions can be combined arbitrarily, that is, the preferred examples of the utility model are obtained.

[0026] The positive progress effect of the utility model lies in:

[0027] The above-mentioned extraction water recovery energy-saving system is provided with the float sealing mechanism and the discharge pipe. When the water level in the cutting water storage tank is lower than the overflow port, the end pipe at the bottom end of the dry condensation water inlet pipe is in an open state, the discharge pipe is not communicated with the dry condensation water inlet pipe, the water generated by dry condensation enters the cutting water storage tank through the dry condensation water inlet pipe, when the water level reaches the overflow port, the float sealing mechanism seals the bottom end of the end pipe through the action of the float, and the discharge pipe is communicated with the dry condensation water inlet pipe at the same time. At this time, the water generated by dry condensation is discharged through the discharge pipe after passing through the dry condensation water inlet pipe. Since the water does not contain monomers, it can be directly discharged without treatment, so that pollution caused by passing through the cutting water storage tank and then entering the extraction water storage tank through the overflow port is avoided, so that the work load of extraction water recovery is not increased, energy consumption is reduced, and the energy-saving effect is achieved. Further, the high-temperature steam heat generated by the evaporation recovery equipment can be utilized through the waste heat recovery mechanism. The heat heats the water flowing into the evaporation recovery equipment from the extraction water storage tank, preheating is realized, and the energy-saving effect is further achieved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the utility model.

[0029] Figure 2 It is a structural schematic diagram of the cutting water storage tank.

[0030] Figure 3 It is a structural schematic view of the waste heat recovery mechanism.

[0031] Mark explanation

[0032] 1, cut granular water storage tank; 101, fresh desalted water inlet pipe; 102, dry condensate water inlet pipe; 103, cut granular water inlet pipe; 104, valve; 105, overflow port;

[0033] 2, extraction water storage tank;

[0034] 3, evaporation recovery equipment;

[0035] 4, first connecting pipe;

[0036] 5, discharge pipe;

[0037] 6, second connecting pipe;

[0038] 7, water pump;

[0039] 8, conveying pipe;

[0040] 9, steam pipe;

[0041] 10, waste heat recovery mechanism; 1001, cylinder; 1002, spiral partition; 1003, gas outlet;

[0042] 11, end pipe;

[0043] 12, buoyancy sealing mechanism; 1201, movable rod; 1202, positioning cylinder; 1203, bottom rod; 1204, spring; 1205, sealing disc; 1206, floating ball; 1207, shielding strip; 1208, through hole. Specific implementation

[0044] The utility model will be further explained by the mode of embodiment below, but will not therefore limit the utility model in the embodiment range.

[0045] As Figures 1-3As shown, an extraction water recovery and energy-saving system includes an extraction water storage tank 2; further comprising: a pelletizing water storage tank 1, wherein a plurality of drying condensed water inlet pipes 102 are fixedly installed on the top of the pelletizing water storage tank 1, an overflow port 105 is fixedly connected to one side of the top of the pelletizing water storage tank 1, and the overflow port 105 is connected to the extraction water storage tank 2 through a second connecting pipe 6; the bottom end of the drying condensed water inlet pipe 102 is located in the pelletizing water storage tank 1, and the bottom end of the drying condensed water inlet pipe 102 is fixedly connected to the end pipe 11; a discharge pipe 5, wherein the discharge pipe 5 is connected to the extraction water storage tank 2; The drying condensed water inlet pipe 102 is connected; the buoyancy sealing mechanism 12, the buoyancy sealing mechanism 12 is located at the bottom of the end pipe 11, after the water level in the pelletizing water storage tank 1 reaches the overflow port 105 position, the buoyancy sealing mechanism 12 blocks the lower end of the end pipe 11, and connects the discharge pipe 5 with the drying condensed water inlet pipe 102; the evaporation recovery equipment 3, the evaporation recovery equipment 3 is connected to the extraction water storage tank 2, and the connection between the evaporation recovery equipment 3 and the extraction water storage tank 2 is provided with a waste heat recovery mechanism 10 for discharging the steam of the evaporation recovery equipment 3.

[0046] The top of the pelletizing water storage tank 1 is also fixedly connected with a fresh desalted water inlet pipe 101 and a pelletizing return water inlet pipe 103 ; a valve 104 is installed at the top of the fresh desalted water inlet pipe 101 .

[0047] like Figures 1-2 As shown, the top end of the discharge pipe 5 is fixedly connected to the first connecting pipe 4 , and one end of the first connecting pipe 4 away from the discharge pipe 5 is fixedly connected to one side of the drying condensed water inlet pipe 102 .

[0048] When the discharge pipe 5 is draining water externally, multiple drying condensed water inlet pipes 102 are connected to the single discharge pipe 5 through the first connecting pipe 4 , and water in all drying condensed water inlet pipes 102 is discharged uniformly through the single discharge pipe 5 .

[0049] like Figure 2 As shown, the buoyancy sealing mechanism 12 includes a bottom rod 1203 elastically mounted below the top inner wall of the pelletizing water storage tank 1, the bottom rod 1203 is fixedly connected to the sealing disk 1205, and the bottom end of the end pipe 11 is aligned with the sealing disk 1205, and a float 1206 is fixedly mounted on one side of the sealing disk 1205.

[0050] At least one spring 1204 is provided on the top surface of the bottom rod 1203 , one end of the spring 1204 is fixedly connected to the top surface of the bottom rod 1203 , and the other end of the spring 1204 is fixedly connected to the top inner wall of the pelletizing water storage tank 1 .

[0051] A vertical movable rod 1201 is fixedly installed on the top surface of the bottom rod 1203 , a vertical positioning cylinder 1202 is fixedly connected to the top inner wall of the pelletizing water storage tank 1 , and the movable rod 1201 is cooperatively connected with the positioning cylinder 1202 .

[0052] The top surface of the blocking disc 1205 is fixedly provided with a shielding strip 1207 which is in contact with the inner wall of the dry condensed water inlet pipe 102, and the shielding strip 1207 is provided with a through hole 1208.

[0053] When the water level in the cutting water storage tank 1 is lower than the overflow port 105, the end pipe 11 is opened at the bottom end, and the shielding strip 1207 blocks the connection between the dry condensed water inlet pipe 102 and the first connecting pipe 4. Figure 2

[0054] When the water in the dry condensed water inlet pipe 102 enters the cutting water storage tank 1 through the end pipe 11, the water level continues to rise, and the floating ball 1206 is lifted by the buoyancy, so that the blocking disc 1205 is lifted and the compression spring 1204 is compressed. When the blocking disc 1205 moves upward, it is guided by the movable rod 1201 and the positioning cylinder 1202, until the water level reaches the overflow port 105. At this time, the blocking disc 1205 blocks the end pipe 11, and the shielding strip 1207 moves with the blocking disc 1205. The connection between the dry condensed water inlet pipe 102 and the first connecting pipe 4 is aligned with the through hole 1208, and the water in the dry condensed water inlet pipe 102 is directly discharged through the discharge pipe 5 after passing through the first connecting pipe 4.

[0055] As shown in Figure 1 The water pump 7 is provided on one side of the extraction water storage tank 2, the water pump 7 is connected with the evaporation recovery device 3 through the conveying pipe 8, and the waste heat recovery mechanism 10 is sleeved on the outer wall of the conveying pipe 8.

[0056] The water pump 7 extracts water in the extraction water storage tank 2, and enters the evaporation recovery device 3 through the conveying pipe 8. The evaporation recovery device 3 evaporates to realize treatment.

[0057] As shown in Figure 1 and Figure 3 The waste heat recovery mechanism 10 includes a cylinder body 1001, a spiral partition plate 1002 and an air outlet 1003. The cylinder body 1001 is fixedly sleeved on the outer wall of the conveying pipe 8. The cylinder body 1001 is provided with the spiral partition plate 1002, and the spiral partition plate 1002 is sleeved on the outer wall of the conveying pipe 8. The cylinder body 1001 is divided into a spiral channel by the outer wall of the conveying pipe 8 and the spiral partition plate 1002. The cylinder body 1001 is fixedly connected with the air outlet 1003 at one end of the top, and the air outlet 1003 is in communication with one end of the channel.

[0058] The evaporation recovery device 3 is connected with a steam pipe 9, one end of the steam pipe 9 is fixedly connected with one end of the top of the cylinder body 1001, and the steam pipe 9 is in communication with the end of the channel away from the air outlet 1003.

[0059] ​The high-temperature steam generated by the evaporation recovery device 3 enters into the spiral channel through the steam pipe 9, flows in the spiral channel, provides heating for the water in the conveying pipe 8, and is finally discharged through the gas outlet 1003.

[0060] Through the above, the heat of the steam can be recycled.

[0061] The utility model is not limited to the above-mentioned embodiment, no matter makes any change in its shape or structure, all falls in the protection scope of the utility model. The protection scope of the utility model is defined by the appended claims, and the person skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall into the protection scope of the utility model.

Claims

1. An extraction water recovery and energy-saving system, comprising an extraction water storage tank (2); characterized in that: Also includes: A pelletizing water storage tank (1), wherein a plurality of drying condensed water inlet pipes (102) are fixedly installed on the top of the pelletizing water storage tank (1), an overflow port (105) is fixedly connected to one side of the top of the pelletizing water storage tank (1), and the overflow port (105) is connected to the extraction water storage tank (2) via a second connecting pipe (6); the bottom end of the drying condensed water inlet pipe (102) is located in the pelletizing water storage tank (1), and the bottom end of the drying condensed water inlet pipe (102) is fixedly connected to an end pipe (11); a discharge pipe (5), the discharge pipe (5) being connected to the dry condensed water inlet pipe (102); A buoyancy sealing mechanism (12), the buoyancy sealing mechanism (12) being located at the bottom of the end pipe (11); after the water level in the pelletizing water storage tank (1) reaches the overflow port (105), the buoyancy sealing mechanism (12) blocks the lower end of the end pipe (11) and enables the discharge pipe (5) to communicate with the drying condensed water inlet pipe (102); The evaporation recovery device (3) is connected to the extraction water storage tank (2), and a waste heat recovery mechanism (10) for discharging steam from the evaporation recovery device (3) is provided at the connection between the evaporation recovery device (3) and the extraction water storage tank (2).

2. The extraction water recovery and energy-saving system according to claim 1, characterized in that: The top of the pelletizing water storage tank (1) is also fixedly connected to a fresh desalted water inlet pipe (101) and a pelletizing return water inlet pipe (103); a valve (104) is installed at the top of the fresh desalted water inlet pipe (101).

3. The extraction water recovery and energy-saving system according to claim 1, characterized in that: The top end of the discharge pipe (5) is fixedly connected to a first connecting pipe (4), and one end of the first connecting pipe (4) away from the discharge pipe (5) is fixedly connected to one side of the dry condensed water inlet pipe (102).

4. The extraction water recovery and energy-saving system according to claim 1, characterized in that: The buoyancy sealing mechanism (12) comprises a bottom rod (1203) elastically mounted below the top inner wall of the pelletizing water storage tank (1), the bottom rod (1203) being fixedly connected to a sealing disk (1205), and the bottom end of the end pipe (11) being aligned with the sealing disk (1205), and a float (1206) being fixedly mounted on one side of the sealing disk (1205).

5. The extraction water recovery and energy-saving system according to claim 4, characterized in that: At least one spring (1204) is provided on the top surface of the bottom rod (1203), one end of the spring (1204) is fixedly connected to the top surface of the bottom rod (1203), and the other end of the spring (1204) is fixedly connected to the top inner wall of the pelletizing water storage tank (1).

6. The extraction water recovery and energy-saving system according to claim 4, characterized in that: A vertical movable rod (1201) is fixedly mounted on the top surface of the bottom rod (1203), a vertical positioning cylinder (1202) is fixedly connected to the top inner wall of the pelletizing water storage tank (1), and the movable rod (1201) is cooperatively connected to the positioning cylinder (1202).

7. The extraction water recovery and energy-saving system according to claim 4, characterized in that: A shielding strip (1207) is fixedly mounted on the top surface of the blocking disk (1205), the shielding strip (1207) is in contact with the inner wall of the drying condensation water inlet pipe (102), and a through hole (1208) is provided on the shielding strip (1207).

8. The extraction water recovery and energy-saving system according to claim 1, characterized in that: A water pump (7) is provided on one side of the extraction water storage tank (2), and the water pump (7) is connected to the evaporation recovery device (3) through a delivery pipe (8), and the waste heat recovery mechanism (10) is sleeved on the outer wall of the delivery pipe (8).

9. The extraction water recovery and energy-saving system according to claim 8, characterized in that: The waste heat recovery mechanism (10) comprises a cylinder (1001), a spiral partition (1002) and an air outlet (1003); the cylinder (1001) is fixedly sleeved on the outer wall of the delivery pipe (8); a spiral partition (1002) is provided in the cylinder (1001), and the spiral partition (1002) is sleeved on the outer wall of the delivery pipe (8); the cylinder (1001) is divided into a spiral channel by the outer wall of the delivery pipe (8) and the spiral partition (1002); the air outlet (1003) is fixedly connected to the top of one end of the cylinder (1001), and the air outlet (1003) is communicated with one end of the channel.

10. The extraction water recovery and energy-saving system according to claim 9, characterized in that: The evaporation recovery device (3) is connected to a steam pipe (9), one end of the steam pipe (9) is fixedly connected to the top of one end of the cylinder (1001), and the steam pipe (9) is connected to the end of the channel away from the air outlet (1003).

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