Hot water recovery system

Abstract

The hot water recovery system comprises an extraction tank, the extraction tank further comprises an outer shell, an inner shell is arranged in the outer shell, a closed steam chamber is formed between the outer shell and the inner shell, an upper cover is arranged on the upper portion of the inner shell, a feeding port is formed in the middle of the upper cover, and a sealing cover is arranged at an opening in the upper portion of the feeding port. A discharge hole is formed in the lower part of the extraction tank and is communicated with the inner shell; the lower portion of the steam chamber is connected with an outlet of a first delivery pump through a pipeline, an inlet of the first delivery pump is connected with an outlet of a steam generator through a pipeline, an inlet of the steam generator is connected with an outlet of a hot water storage tank through a pipeline, and the hot water storage tank is further connected with a cold water source. The upper cover is connected with the liquid medicine steam waste heat recovery assembly, the discharging port is connected with the liquid medicine waste heat recovery assembly, waste heat generated in the extraction process and after extraction of the extraction tank can be fully recovered through the liquid medicine steam waste heat recovery assembly and the liquid medicine waste heat recovery assembly, the heat utilization efficiency is improved, and energy waste is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery of extraction tanks, and particularly relates to a hot water recovery system. Background Art

[0002] At present, when extracting Chinese medicinal materials in the extraction tank, all the secondary steam generated is discharged. Especially in winter, when the secondary steam encounters cold air, it will float all over the sky and pollute the surrounding environment. The volume of the extraction tank is large, and the heat consumption in the extraction process is relatively large. Whether the steam waste heat in the boiling process can be recycled is the key to achieving energy conservation and improving economic benefits for enterprises. Because secondary steam is a secondary energy source, it can release a large amount of latent heat of liquefaction, thereby realizing heat recovery. After heat release, saturated condensed water is generated at almost the same temperature and pressure, which not only has considerable heat, but also carries a certain concentration of organic components.

[0003] For example, the Chinese utility model patent with application number: CN201420355955.4 discloses a secondary steam waste heat recovery and reuse system for an extraction tank, comprising an extraction tank, a plate heat exchanger, a condensed water storage tank, a hot water storage tank and a water pump, wherein the secondary steam outlet of the extraction tank is connected to the inlet of the heat medium channel of the plate heat exchanger through a secondary steam pipeline, the outlet of the hot medium channel is connected to the inlet of the condensed water storage tank through a condensed water pipeline, the cold drinking water source is connected to the inlet of the cold medium channel of the plate heat exchanger through a cold drinking water pipeline, the outlet of the cold medium channel is connected to the hot water inlet of the hot water storage tank through a hot water pipeline, the water outlets of the condensed water storage tank and the hot water storage tank are connected to the water inlet of the water pump through a pipeline, and the water outlet of the water pump is connected to the water inlet of the extraction tank through a pipeline. The above waste heat recovery and reuse system realizes the complete recovery of secondary steam, solves the problem of secondary steam waste heat utilization of the existing extraction tank, and at the same time shortens the heating time of the extract solvent in the extraction tank, thereby improving production efficiency.

[0004] However, the waste heat recovery and reuse system only recovers waste heat from the secondary steam in the extraction process. The solution after the extraction is completed still contains a large amount of waste heat, and the system cannot recover this part of the waste heat. Utility Model Content

[0005] The utility model provides a hot water recovery system, aiming to solve the problem that the waste heat recovery of the above-mentioned waste heat recovery and reuse system is not comprehensive enough.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A hot water recovery system comprises: an extraction tank, a steam generator, a first delivery pump, a hot water storage tank and a cold water source; the extraction tank further comprises: an outer shell, an inner shell is arranged inside the outer shell, a closed steam chamber is formed between the outer shell and the inner shell, an upper cover is arranged on the upper part of the inner shell, a feed inlet is opened in the middle of the upper cover, a sealing cover is arranged at the upper opening of the feed inlet, a discharge port is arranged at the lower part of the extraction tank, and the discharge port is communicated with the inner shell; the lower part of the steam chamber is connected to the outlet of the first delivery pump through a pipeline, the inlet of the first delivery pump is connected to the outlet of the steam generator through a pipeline, the inlet of the steam generator is connected to the outlet of the hot water storage tank through a pipeline, and the hot water storage tank is also connected to the cold water source;

[0008] The upper cover is connected to a medicine liquid steam waste heat recovery component, which is used to recover the waste heat of the steam generated during the extraction process of the inner shell cavity. The discharge port is connected to a medicine liquid waste heat recovery component, which is used to recover the waste heat of the medicine liquid after the extraction is completed.

[0009] Furthermore, the medicinal liquid steam waste heat recovery component includes: a first heat exchanger, the heat source inlet of the first heat exchanger is connected to the upper cover through a pipeline and connected to the inner cavity of the inner shell, the cold source inlet of the first heat exchanger is connected to the cold water source through a pipeline, the heat source outlet of the first heat exchanger is connected to the upper cover through a pipeline and connected to the inner cavity of the inner shell, and the cold source outlet of the first heat exchanger is connected to the hot water storage tank through a pipeline.

[0010] Furthermore, the liquid medicine waste heat recovery component includes: a second heat exchanger, the heat source inlet of the second heat exchanger is connected to a filter component through a pipeline, the filter component is connected to the discharge port, the cold source inlet of the second heat exchanger is connected to a cold water source through a pipeline, the heat source outlet of the second heat exchanger is connected to a product storage tank through a pipeline, and the cold source outlet of the second heat exchanger is connected to a hot water storage tank through a pipeline.

[0011] Furthermore, the lower part of the steam chamber is communicated with the hot water storage tank through a pipeline, and the upper part of the steam chamber is communicated with the lower part of the hot water storage tank through a pipeline.

[0012] Furthermore, a second delivery pump is provided on the pipeline that cooperates with the filter assembly and the second heat exchanger.

[0013] Furthermore, each pipeline is provided with a valve.

[0014] Furthermore, a plurality of heat conducting sheets are arranged on the outer wall of the inner shell.

[0015] Compared with the prior art, the utility model has the following technical effects:

[0016] 1. The hot water recovery system described in the utility model can fully recover the waste heat generated during the extraction process of the extraction tank and after the extraction is completed through the liquid medicine steam waste heat recovery component and the liquid medicine waste heat recovery component, thereby improving the heat utilization efficiency and reducing energy waste.

[0017] 2. The hot water recovery system described in the utility model can directly recycle the excess steam generated during the steam heating process and the hot water after condensation through the layered setting of the extraction tank, without the need for filtering, which can simplify the waste heat recovery process of the steam chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of a hot water recovery system described in the utility model;

[0019] Figure 2 It is a schematic diagram of an extraction tank of a hot water recovery system described in the utility model.

[0020] In the figure: 1, extraction tank; 101, outer shell; 102, inner shell; 103, steam chamber; 104, upper cover; 105, feed inlet; 106, cover; 107, discharge port; 108, heat conducting sheet;

[0021] 2. Steam generator; 3. First delivery pump; 4. Hot water storage tank; 5. First heat exchanger; 6. Cold water source; 7. Filter assembly; 8. Second delivery pump; 9. Second heat exchanger; 10. Product storage tank. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the application and with reference to the accompanying drawings.

[0023] like Figure 1-2As shown, a hot water recovery system comprises: an extraction tank 1, a steam generator 2, a first delivery pump 3, a hot water storage tank 4 and a cold water source 6; the extraction tank 1 further comprises: an outer shell 101, an inner shell 102 is arranged inside the outer shell 101, a closed steam chamber 103 is formed between the outer shell 101 and the inner shell 102, an upper cover 104 is arranged on the upper part of the inner shell 102, a feed port 105 is opened in the middle of the upper cover 104, a sealing cover 106 is arranged at the upper opening of the feed port 105, a discharge port 107 is arranged at the lower part of the extraction tank 1, and the discharge port 107 is communicated with the inner shell 102; the lower part of the steam chamber 103 is connected to the outlet of the first delivery pump 3 through a pipeline, The inlet of the first delivery pump 3 is connected to the outlet of the steam generator 2 through a pipeline, and the inlet of the steam generator 2 is connected to the outlet of the hot water storage tank 4 through a pipeline, and the hot water storage tank 4 is also connected to a cold water source 6; the cold water source 6 connected to the hot water storage tank 4 is used to replenish water for the hot water storage tank 4, and the hot water storage tank 4 is used to provide a water source for the steam generator 2 and collect hot water with waste heat recovered during the extraction process; the hot steam generated by the steam generator 2 is delivered to the inside of the steam chamber 103 in the extraction tank 1 through the first delivery pump 3, so as to heat the inner shell 102 and assist in the extraction of the liquid medicine inside the inner shell 102; preferably, a stirring component can also be provided in the inner shell 102 to accelerate the liquid medicine extraction process;

[0024] The upper cover 104 is connected to a medicine liquid steam waste heat recovery component, which is used to recover the waste heat of the steam generated during the extraction process in the inner cavity of the inner shell 102. The discharge port 107 is connected to a medicine liquid waste heat recovery component, which is used to recover the waste heat of the medicine after the extraction is completed.

[0025] like Figure 1-2 As shown, the liquid medicine steam waste heat recovery component includes: a first heat exchanger 5, the heat source inlet of the first heat exchanger 5 is connected to the upper cover 104 through a pipeline and communicates with the inner cavity of the inner shell 102, the cold source inlet of the first heat exchanger 5 is connected to the cold water source 6 through a pipeline, the heat source outlet of the first heat exchanger 5 is connected to the upper cover 104 through a pipeline and communicates with the inner cavity of the inner shell 102, and the cold source outlet of the first heat exchanger 5 is connected to the hot water storage tank 4 through a pipeline. The hot steam generated by the liquid medicine in the inner cavity of the inner shell 102 is recovered by the first heat exchanger 5, and the hot steam generated by the liquid medicine carries part of the organic components, and re-enters the inner shell 102 after collecting the waste heat, which can improve the utilization rate of liquid medicine extraction and reduce waste; preferably, a delivery pump can be set on the pipeline matching the heat source outlet and the upper cover 104 to assist the liquid condensed by the hot steam to return to the inner shell 102.

[0026] like Figure 1-2As shown, the liquid medicine waste heat recovery component includes: a second heat exchanger 9, a heat source inlet of the second heat exchanger 9 is connected to a filter component 7 through a pipeline, the filter component 7 is connected to a discharge port 107, a cold source inlet of the second heat exchanger 9 is connected to a cold water source 6 through a pipeline, a heat source outlet of the second heat exchanger 9 is connected to a product storage tank 10 through a pipeline, and a cold source outlet of the second heat exchanger 9 is connected to a hot water storage tank 4 through a pipeline. Recovering waste heat from the finished liquid medicine through the second heat exchanger 9 can accelerate the cooling of the finished liquid medicine, and can further improve the waste heat recovery efficiency during the extraction process.

[0027] like Figure 1-2 As shown, the lower part of the steam chamber 103 is connected to the hot water storage tank 4 through a pipeline, and the upper part of the steam chamber 103 is connected to the lower part of the hot water storage tank 4 through a pipeline. Excess steam and condensed hot water in the steam heating process can be returned to the hot water storage tank 4 through the pipeline to directly heat the water in the hot water storage tank 4, ensuring the steam circulation inside the steam chamber 103, so that the temperature inside the steam chamber 103 is more stable.

[0028] like Figure 1 As shown, a second delivery pump 8 is provided on the pipeline that cooperates with the filter assembly 7 and the second heat exchanger 9.

[0029] In a specific embodiment, valves are provided on each pipeline. During the actual use of the system, the valves can be used to coordinate the work of various components, which is more flexible and convenient to use. The valves can also be controlled by a corresponding control system to achieve automatic adjustment. The valves can be pressure controlled valves or used in conjunction with pressure sensors to ensure the smoothness and safety of the waste heat recovery process.

[0030] like Figure 2 As shown, a plurality of heat conducting sheets 108 are arranged on the outer wall of the inner shell 102 . The arrangement of the heat conducting sheets 108 can increase the contact area between the inner shell 102 and the hot steam, improve the heat transfer efficiency, and improve the utilization efficiency of the steam inside the steam chamber 103 .

[0031] In a specific embodiment, a plurality of extraction tanks 1 can be provided as required, and the waste heat recovery method of the plurality of extraction tanks 1 is the same as that of a single extraction tank 1, which will not be described in detail here.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A hot water recovery system, characterized in that: include: An extraction tank (1), a steam generator (2), a first delivery pump (3), a hot water storage tank (4) and a cold water source (6); the extraction tank (1) further comprises: an outer shell (101), an inner shell (102) is arranged inside the outer shell (101), a closed steam chamber (103) is formed between the outer shell (101) and the inner shell (102), an upper cover (104) is arranged on the upper part of the inner shell (102), a feed inlet (105) is opened in the middle of the upper cover (104), and the feed inlet (105) ) is provided with a sealing cover (106) at the upper opening, and a discharge port (107) is provided at the lower part of the extraction tank (1), and the discharge port (107) is communicated with the inner shell (102); the lower part of the steam chamber (103) is connected to the outlet of the first delivery pump (3) through a pipeline, the inlet of the first delivery pump (3) is connected to the outlet of the steam generator (2) through a pipeline, and the inlet of the steam generator (2) is connected to the outlet of the hot water storage tank (4) through a pipeline, and the hot water storage tank (4) is also connected to a cold water source (6); The upper cover (104) is connected to a medicine liquid steam waste heat recovery component, which is used to recover the waste heat of the steam generated during the extraction process of the inner cavity of the inner shell (102). The discharge port (107) is connected to a medicine liquid waste heat recovery component, which is used to recover the waste heat of the medicine liquid after the extraction is completed.

2. A hot water recovery system according to claim 1, characterized in that: The liquid medicine steam waste heat recovery component comprises: a first heat exchanger (5); a heat source inlet of the first heat exchanger (5) is connected to an upper cover (104) through a pipeline and communicates with an inner cavity of an inner shell (102); a cold source inlet of the first heat exchanger (5) is connected to a cold water source (6) through a pipeline; a heat source outlet of the first heat exchanger (5) is connected to an upper cover (104) through a pipeline and communicates with the inner cavity of the inner shell (102); and a cold source outlet of the first heat exchanger (5) is connected to a hot water storage tank (4) through a pipeline.

3. A hot water recovery system according to claim 1, characterized in that: The liquid medicine waste heat recovery component comprises: a second heat exchanger (9); a heat source inlet of the second heat exchanger (9) is connected to a filter component (7) via a pipeline; the filter component (7) is connected to a discharge port (107); a cold source inlet of the second heat exchanger (9) is connected to a cold water source (6) via a pipeline; a heat source outlet of the second heat exchanger (9) is connected to a product storage tank (10) via a pipeline; and a cold source outlet of the second heat exchanger (9) is connected to a hot water storage tank (4) via a pipeline.

4. A hot water recovery system according to claim 1, characterized in that: The lower part of the steam chamber (103) is communicated with the hot water storage tank (4) through a pipeline, and the upper part of the steam chamber (103) is communicated with the lower part of the hot water storage tank (4) through a pipeline.

5. A hot water recovery system according to claim 3, characterized in that: A second delivery pump (8) is provided on the pipeline that cooperates with the filter assembly (7) and the second heat exchanger (9).

6. A hot water recovery system according to any one of claims 1 to 5, characterized in that: Valves are provided on each pipeline.

7. A hot water recovery system according to claim 1, characterized in that: A plurality of heat conducting sheets (108) are arranged on the outer wall of the inner shell (102).

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