Vacuum condensate water automatic discharge system

Abstract

The invention relates to the technical field of waste water automatic discharge, and provides a vacuum condensate water automatic discharge system which comprises a concentration tank with a condensation port; the storage tank is provided with an inlet I, an exhaust port I and a discharge port I; the discharge tank is provided with an inlet II, an exhaust port II and a discharge port II; two ends of the connecting pipe I are respectively connected with the condensation port and the inlet I; two ends of the connecting pipe II are respectively communicated with the discharge port I and the inlet II; valves are arranged on the second connecting pipe and the second discharging opening; the vacuum pump is arranged on the first exhaust port. According to the technical scheme, the problem that wastewater in an extraction, concentration and discharge system cannot be continuously discharged in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of automatic wastewater discharge, and in particular to an automatic vacuum condensed water discharge system. Background Art

[0002] In recent years, the pharmaceutical industry has continued to grow and has made significant achievements. Among them, there have been significant progress in the fields of biopharmaceuticals, chemical pharmaceuticals, and traditional Chinese medicine pharmaceuticals. In the actual production process, pharmaceutical factories usually use extraction, concentration and discharge systems. The system usually consists of three main parts: extraction, concentration, and discharge treatment. During the vacuum extraction and concentration process, the boiling point of the liquid is reduced by reducing the pressure in the concentrator, so that the solvent evaporates quickly at a lower temperature to achieve the concentration of the extract. This can improve the concentration efficiency while ensuring the stability of the drug ingredients.

[0003] The above process will produce steam, which will be subsequently condensed and recovered to become wastewater. Such wastewater has complex components and is generally effectively treated before discharge to meet emission standards. At the same time, some useful substances are recovered. Otherwise, it will cause serious pollution to the environment. However, when the above wastewater is treated by traditional discharge systems, after accumulating to a certain amount of wastewater, it needs to be shut down before it can be discharged to avoid problems such as vacuum sealing or other problems that affect the subsequent operation of the entire extraction, concentration and discharge system, and continuous discharge cannot be achieved. Summary of the invention

[0004] The present invention provides a vacuum condensed water automatic discharge system, which solves the problem in the related art that waste water in the extraction, concentration and discharge system cannot be discharged continuously.

[0005] The technical solution of the present invention is as follows: A vacuum condensate automatic discharge system, comprising: A concentration tank, wherein the concentration tank has a condensation port; A storage tank, the storage tank having an inlet port, an exhaust port, and a discharge port; a discharge tank having a second inlet, a second exhaust port, and a second discharge port; A connecting pipe 1, wherein two ends of the connecting pipe 1 are respectively connected to the condensation port and the inlet 1; A second connecting pipe, wherein two ends of the second connecting pipe are respectively connected to the first discharge port and the second inlet; A valve, the connecting pipe 2 and the discharge port 2 are both provided with the valve; A vacuum pump is arranged on the exhaust port 1.

[0006] As a further technical solution, the concentration tank comprises: An outer cylinder body and an inner cylinder, wherein the inner cylinder is rotatably arranged in the outer cylinder body, both ends of the outer cylinder body are provided with a concentration flow port, and both the concentration flow ports are communicated with the inner cylinder, and a heating area is formed between the outer wall of the inner cylinder and the inner wall of the outer cylinder body, and the heating area has an oil inlet and an oil outlet; A force-bearing baffle, which is arranged on the outer wall of the inner cylinder and located in the heating area, and is configured to drive the inner cylinder to rotate under the action of the fluid in the heating area; Wherein, the concentration flow outlet at one end of the outer cylinder body is the condensation outlet.

[0007] As a further technical solution, the inner cylinder is located between the oil inlet and the oil outlet, and the inner wall of the outer cylinder body has a spiral guide groove, and the spiral guide groove is arranged around the inner cylinder.

[0008] As a further technical solution, the oil inlet is a tangential oil inlet, the oil outlet is a tangential oil outlet, the outer cylinder body and the inner cylinder are coaxially arranged, and the two concentrated flow ports are located on the extension line of the inner cylinder rotation axis.

[0009] As a further technical solution, both ends of the inner wall of the outer tube body have a centering cone, the center position of the centering cone has the concentration flow port, both ends of the inner tube have a centering inner cone, the centering inner cone is adapted to the shape of the centering cone, and the centering inner cone is rotatably connected to the centering cone, the center position of the centering inner cone has a connecting port, and the concentration flow port is connected to the inner tube through the connecting port.

[0010] As a further technical solution, the inner cylinder is arranged with its rotation axis in the horizontal direction, and further comprises: The guiding inner frustum is arranged in the inner cylinder, located at one end of the inner cylinder close to the oil outlet, the guiding inner frustum is coaxially arranged with the inner cylinder, and the guiding inner frustum has a guiding conical surface, and the guiding conical surface is configured to guide the concentrated liquid in the inner cylinder to the concentrated flow port.

[0011] As a further technical solution, it also includes: A spiral guide plate is arranged on the inner wall of the inner cylinder, and is configured to guide the concentrated liquid in the inner cylinder to the guide inner cone.

[0012] As a further technical solution, there are a plurality of spiral guide plates, and the plurality of spiral guide plates are arranged along the circumference of the guiding inner cone.

[0013] As a further technical solution, the heating area is annular, and the width of the force-bearing baffle is smaller than the ring width of the heating area.

[0014] As a further technical solution, there are several force-bearing baffles, and the several force-bearing baffles are arranged in a circumferential arrangement around the inner cylinder.

[0015] The working principle and beneficial effects of the present invention are as follows: Realize continuous wastewater discharge: Utilize the vacuum pump in the system. First, control its operation to create a vacuum negative pressure environment in the discharge pipeline. Under the action of the air pressure difference, the steam at the condensation port is quickly absorbed and slowly condensed into wastewater, which is transported to the storage tank for temporary storage. When the temporarily stored wastewater reaches a certain height, it will discharge the wastewater to the external treatment system, thereby realizing drainage without shutting down the machine, and making full use of the vacuum pump of the vacuum concentration extraction system.

[0016] Specifically, first close the valves at the second connecting pipe and the second discharge port, and close the second exhaust port. Open the vacuum pump at the second exhaust port to make the first connecting pipe, the second connecting pipe, the storage tank, and the discharge tank form a vacuum negative pressure environment. Under the action of the air pressure difference, the steam at the condensation port is quickly absorbed and slowly condensed into wastewater, which is transported to the storage tank for temporary storage; when the wastewater reaches the set water level, control the valve of the second connecting pipe to open. Since the overall height of the discharge tank is lower than that of the storage tank, the wastewater is introduced into the discharge tank under the action of gravity; then control the valve of the second connecting pipe to close, open the valve at the second discharge port and the second exhaust port, then air enters the discharge tank, and the wastewater therein smoothly drains away from the bottom second discharge port under the action of gravity. At the same time, since the storage tank is still in a vacuum negative pressure environment under the action of the vacuum pump, it continuously collects wastewater, thereby realizing continuous discharge without the need to shut down for discharge.

[0017] After that, control the valve of the second connecting pipe to open, and close the valve at the second discharge port and the second exhaust port. Then the discharge tank gradually turns into a vacuum negative pressure environment under the action of the vacuum pump. The gas therein quickly discharges from the first exhaust port of the storage tank. At the same time, the wastewater in the storage tank flows into the discharge tank again to prepare for the next discharge. Repeatedly cycling this step can effectively discharge all the wastewater continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following will further illustrate the above characteristics, technical features, advantages and their implementation manners of the present invention in a clear and easy-to-understand manner in combination with the drawings in the preferred embodiments.

[0019] Figure 1 It is a schematic structural diagram of a vacuum condensate automatic discharge system in the present invention; Figure 2 It is a schematic structural diagram of the first perspective of the concentration tank in the present invention; Figure 3 It is a partial cross-sectional view of the first perspective of a vacuum condensate automatic discharge system in the present invention; Figure 4This is a schematic diagram of the internal structure of the concentration tank in the present invention; Figure 5 This is a schematic diagram of the internal structure of the outer cylinder body in the present invention; Figure 6 It is a schematic diagram of the inner cylinder structure in the present invention; Figure 7 It is a schematic diagram of the internal structure of the inner cylinder in the present invention; Figure 8 This is a schematic structural diagram of the concentration tank from the second viewing angle in the present invention.

[0020] In the figure: 1. outer cylinder body, 101. concentrate flow port, 102. spiral guide groove, 103. centering cone, 2. inner cylinder, 201. centering inner cone, 202. connecting port, 3. heating area, 301. oil inlet, 302. oil outlet, 4. force baffle, 5. guiding inner cone, 501. guiding cone, 6. spiral guide plate, 7. concentrate tank, 701. condensation port, 8. storage tank, 801. inlet one, 802. exhaust port one, 803. discharge port one, 9. discharge tank, 901. inlet two, 902. exhaust port two, 903. discharge port two, 10. connecting pipe one, 11. connecting pipe two, 12. valve, 13. vacuum pump. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0022] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0023] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] Reference Figure 1 to Figure 8 , which is the first embodiment of the present invention, proposes a vacuum condensed water automatic discharge system, including: a concentration tank 7 having a condensation port 701; a storage tank 8 having an inlet 1 801, an exhaust port 1 802 and a discharge port 1 803; a discharge tank 9 having an inlet 2 901, an exhaust port 2 902 and a discharge port 2 903; two ends of a connecting pipe 10 are respectively connected to the condensation port 701 and the inlet 1 801; two ends of a connecting pipe 2 11 are respectively connected to the discharge port 1 803 and the inlet 2 901; valves 12 are provided on both the connecting pipe 2 11 and the discharge port 2 903; a vacuum pump 13 is provided on the exhaust port 1 802.

[0026] Realize continuous discharge of wastewater: utilize the vacuum pump 13 in the system, first control its operation, make the vacuum negative pressure environment be formed in the discharge pipeline, under the effect of air pressure difference, the steam at condensation port 701 is quickly absorbed, and slowly condenses into wastewater and is transported to storage tank 8 for temporary storage, when the temporarily stored wastewater reaches a certain height, it will be discharged to the external treatment system, thus realize non-stop drainage, and make full use of the vacuum pump 13 of vacuum concentration and extraction system.

[0027] Specifically, firstly, the valve 12 at the connecting pipe 11 and the second discharge port 903 is closed, and the exhaust port 902 is closed, and the vacuum pump 13 at the exhaust port 902 is turned on, so that the connecting pipe 10, the connecting pipe 11, the storage tank 8 and the discharge tank 9 form a vacuum negative pressure environment. Under the action of the air pressure difference, the steam at the condensation port 701 is quickly absorbed and slowly condensed into waste water and transported to the storage tank 8 for temporary storage; when the waste water reaches the set water level, the valve 12 of the connecting pipe 11 is controlled to open, and the discharge tank 9 is filled with water. The overall height of 9 is lower than that of the storage tank 8, and the waste water is introduced into the discharge tank 9 under the action of gravity; then the valve 12 of the connecting pipe 11 is controlled to be closed, and the valve 12 at the discharge port 903 and the exhaust port 902 are opened, so that air is taken into the discharge tank 9, and the waste water therein is smoothly discharged from the discharge port 903 at the bottom under the action of gravity. At the same time, since the storage tank 8 is still in a vacuum negative pressure environment under the action of the vacuum pump 13, the waste water is continuously collected, thereby realizing continuous discharge, and there is no need to stop the machine for discharge.

[0028] Afterwards, control the valve 12 of the connecting pipe 11 to open, and close the valve 12 at the discharge port 903 and the exhaust port 902. Then, the discharge tank 9 is gradually transformed into a vacuum negative pressure environment under the action of the vacuum pump 13, and the gas therein is quickly discharged from the exhaust port 902 of the storage tank 8. At the same time, the waste water in the storage tank 8 flows into the discharge tank 9 again to prepare for the next discharge. Repeating this step can effectively discharge all the waste water continuously.

[0029] Furthermore, the concentration tank 7 includes: an outer tube body 1 and an inner tube 2, the inner tube 2 is rotatably arranged in the outer tube body 1, both ends of the outer tube body 1 have concentration flow ports 101, the two concentration flow ports 101 are connected to the inner tube 2, a heating area 3 is formed between the outer wall of the inner tube 2 and the inner wall of the outer tube body 1, the heating area 3 has an oil inlet 301 and an oil outlet 302; a force baffle 4 is arranged on the outer wall of the inner tube 2, located in the heating area 3, and the force baffle 4 is configured to drive the inner tube 2 to rotate under the action of the fluid in the heating area 3; wherein the concentration flow port 101 at one end of the outer tube body 1 is a condensation port 701.

[0030] In this embodiment, in order to replace the traditional coil-type heating evaporation concentration form and further improve the concentration effect, the concentration tank is configured as an inner and outer cylinder form, and the inner cylinder is rotatably configured. The force baffle drives the inner cylinder to rotate under the action of the fluid. Compared with the traditional coil cooling form, the fluid disturbance in the heating area is increased, the heat exchange time between the hot oil and the outer wall of the inner cylinder is increased, and the heat exchange area is increased, thereby strengthening the heat exchange process, thereby effectively improving the heating efficiency and being able to better meet high-standard production requirements.

[0031] The specific concentration and extraction process of this concentration tank: The circulating hot oil enters from the oil inlet 301 of the heating area 3, preferably from the tangential direction, forming a fluid in the heating area 3, and the fluid impacts the force baffle 4, thereby driving the inner cylinder 2 to rotate, and the force baffle 4 rotates with the inner cylinder 2. The rotation of the inner cylinder 2 makes the outer wall of the inner cylinder 2 fully contact with the hot oil, and heat exchange is carried out to absorb heat. The hot oil after heat exchange is discharged from the oil outlet 302, completing a circulation cooling process. Compared with the traditional coil structure, the inner cylinder 2 is equivalent to "immersed" in the hot oil and rotates in it, which improves the heat exchange efficiency, and the heat exchange time is longer, simplifying the overall structure of the equipment. At the same time, the rotation of the inner cylinder makes the outer wall of the inner cylinder contact with the fluid in the heating area more evenly, avoiding local overheating; in the continuous concentration operation, the circulating hot oil circulates in and out continuously, maintaining the heating effect on the inner cylinder 2, ensuring that the temperature in the concentration tank is maintained within a suitable range, so as to achieve efficient extraction and concentration operations.

[0032] Specifically, the outer cylinder body 1 serves as an integral supporting structure, and the concentrated flow ports 101 at both ends thereof are respectively used to connect the external concentrated liquid delivery pipeline and the connecting pipe 10, so that the concentrated liquid can flow smoothly into the inner cylinder 2 through the concentrated flow port 101 at one end, and ensure that the evaporated gas is condensed into waste water from the concentrated flow port 101 at the other end, i.e., the condensation port 701, and is discharged to the storage tank 8. After the concentrated extraction is completed, the finished concentrated liquid is also discharged from the concentrated flow port 101 at the other end, i.e., the condensation port 701, in the above manner. This can be achieved by controlling the rotation speed of the inner cylinder 2, i.e., firstly, the inner cylinder 2 rotates at a low speed to complete the evaporation and concentration extraction process, and after the waste water is discharged, the inner cylinder 2 is controlled to rotate at a high speed, so that the finished concentrated liquid is continuously discharged along the same path.

[0033] Triangular brackets are welded on the outer walls at both ends of the outer cylinder body 1 to stably support the whole; the inner cylinder 2 is rotatably arranged in the outer cylinder body 1, and a rotation groove can be opened in the outer cylinder body 1. Limit blocks adapted to the rotation groove are welded on both ends of the inner cylinder 2. The limit blocks rotate in the rotation groove through bearings to ensure that the inner cylinder 2 is rotated and installed stably from both ends, and a heating area 3 is formed between its outer wall and the inner wall of the outer cylinder body 1. The area is connected to the external circulating hot oil system through the oil inlet 301 and the oil outlet 302 to realize the circulation of hot oil. The circulating hot oil system includes components such as pipelines, water tanks and water pumps; the force baffle 4 is welded on the outer wall of the inner cylinder 2 and is located in the heating area 3. Its shape, size and number can be designed and adjusted according to actual needs, such as a straight strip, a spiral plate or a trapezoidal plate, mainly to optimize the rotation driving force on the inner cylinder 2 under the action of the fluid, to ensure that the inner cylinder 2 can rotate stably and efficiently, so as to achieve the best cooling effect. This unique configuration enables the entire equipment to achieve an organic combination of structure and function, providing an innovative and efficient solution for the cooling process in the wastewater vacuum concentration process.

[0034] Furthermore, the inner cylinder 2 is located between the oil inlet 301 and the oil outlet 302 , and the inner wall of the outer cylinder body 1 has a spiral guide groove 102 , which is arranged around the inner cylinder 2 .

[0035] In this embodiment, in order to optimize the fluid path and avoid unreasonable guidance, uneven fluid distribution, disordered turbulence, etc., which lead to low heating efficiency, spiral guide grooves 102 are provided on the inner wall of the outer cylinder body 1 around the inner cylinder 2 to provide a clear and orderly flow direction for the fluid entering the heating area 3, so that it can be evenly distributed around the inner cylinder 2, ensuring that the entire outer wall of the inner cylinder 2 can be fully covered by the fluid, entering from the oil inlet 301 at one end of the inner cylinder 2 and being discharged from the oil outlet 302 at the other end, avoiding the problem of local fluid stagnation or excessive flow rate; At the same time, the rotation of the inner tube 2 needs to form a good synergistic effect with the fluid to enhance the heat exchange effect, and the spiral shape of the spiral guide groove 102 can make the fluid produce a spiral propulsion effect as the inner tube 2 rotates, thereby increasing the relative speed and contact time between the fluid and the outer wall of the inner tube 2, and further enhancing the heat exchange process.

[0036] In addition to enhancing cooling uniformity and heating efficiency, this design can also reduce energy consumption. Due to the improvement in heating efficiency, the required amount of circulating hot oil can be appropriately reduced while achieving the same heating effect, thereby reducing energy consumption. This is in line with the production concept of energy conservation and emission reduction, and has significant economic and environmental benefits for long-term large-scale production operations.

[0037] Furthermore, the oil inlet 301 is a tangential oil inlet 301 , the oil outlet 302 is a tangential oil outlet 302 , the outer cylinder body 1 and the inner cylinder 2 are coaxially arranged, and the two concentrated flow ports 101 are both located on the extension line of the rotation axis of the inner cylinder 2 .

[0038] In this embodiment, two cylindrical bodies are coaxially arranged, and the two concentrate flow ports 101 are both located on the extension line of the rotation axis of the inner cylinder 2, which optimizes the overall operation stability, ensures the dynamic balance during operation, reduces the vibration and noise caused by eccentricity, reduces the failure rate of the equipment, and ensures the smoothness of the concentrated liquid in and out. The concentrated liquid can flow smoothly along the axial direction when entering and exiting the inner cylinder 2, avoiding the problem of concentrated liquid flow obstruction caused by unreasonable flow port position, and does not affect the rotation of the inner cylinder 2.

[0039] Furthermore, in order to make the fluid entering the heating area 3 have an initial tangential velocity, thereby forming a strong rotating fluid in the heating area 3 to better act on the force-bearing baffle 4 and drive the inner cylinder 2 to rotate, the oil inlet 301 and the oil outlet 302 are both tangential ports, so that the heat transfer is more efficient.

[0040] Furthermore, both ends of the inner wall of the outer tube body 1 have a centering cone 103, and the center position of the centering cone 103 has a concentration flow port 101, and both ends of the inner tube 2 have a centering inner cone 201, the centering inner cone 201 is adapted to the shape of the centering cone 103, and the centering inner cone 201 is rotatably connected to the centering cone 103, and the center position of the centering inner cone 201 has a connecting port 202, and the concentration flow port 101 is connected to the inner tube 2 through the connecting port 202.

[0041] In this embodiment, a rotating installation method using a centering cone 103 is specifically selected, which is more convenient for early installation and saves some configuration costs such as limit blocks and rotating grooves. At the same time, axial stability can also be quickly ensured. Specifically, the centering cones 103 at both ends of the inner wall of the outer cylinder body 1 are designed with a certain taper, and the taper size is optimized and selected according to the size and rotation characteristics of the inner cylinder 2 to achieve accurate centering positioning and stable support for the inner cylinder 2; further, the concentrated flow port 101 located at the center of the centering cone 103 is designed with an aperture size and shape according to parameters such as the flow rate and viscosity of the concentrated liquid to ensure that the concentrated liquid can pass smoothly, and the flow port and the external concentrated liquid delivery pipeline are sealed. Connection method, such as flange connection or welding connection, and equipped with sealing gaskets or sealants to ensure the sealing of the connection.

[0042] This design not only ensures precise positioning and stable support, but also enables the concentrate to flow more smoothly along the central axis when entering and exiting the inner cylinder 2, thereby reducing the resistance to fluid flow and simplifying the installation process of the inner cylinder 2 and the outer cylinder body 1. The outer cylinder body 1 is designed to be split in half, so that the inner cylinder 2 can be more conveniently and quickly installed with the outer cylinder for precise alignment, thereby improving the maintainability of the equipment.

[0043] At the same time, in order to adapt to the centering cone 103, it is necessary to upgrade both ends of the outer wall of the inner cylinder 2 at the same time, that is, to open a centering inner cone 201 to match the centering cone 103 to ensure stable rotation, and the connecting port 202 corresponding to its center position is connected to the concentrated flow port 101 to ensure the stable flow of the concentrated liquid; compared with a single centering method, the contact area of ​​the double cone is larger, which can more effectively limit the radial and axial displacement of the inner cylinder 2, and reduce the displacement of the inner cylinder 2 caused by factors such as vibration and temperature changes during the operation of the equipment. In the process of wastewater vacuum concentration, good sealing is the key to maintaining the vacuum environment inside the equipment. Through the close cooperation between the centering cone 103 and the centering inner cone 201, the entry of external air is effectively prevented and vacuum leakage is reduced.

[0044] Furthermore, the inner cylinder 2 is arranged with its rotation axis in the horizontal direction, and further includes: a guiding inner cone 5 is arranged in the inner cylinder 2, located at one end of the inner cylinder 2 close to the oil outlet 302, the guiding inner cone 5 is arranged coaxially with the inner cylinder 2, the guiding inner cone 5 has a guiding conical surface 501, and the guiding conical surface 501 is configured to guide the concentrated liquid in the inner cylinder 2 to the concentrated flow outlet 101.

[0045] In this embodiment, the inner cylinder 2 is usually arranged horizontally. During the wastewater vacuum concentration process, the concentrate near the oil outlet 302 may be gathered or flow in an unreasonable direction due to the rotation of the inner cylinder 2, and the concentrate flow outlet 101 is not located at the bottom, resulting in that even if the inner cylinder 2 is rotated at high speed, part of the concentrate cannot flow smoothly to the concentrate flow outlet 101 for discharge. In order to solve the above problem, a guiding inner cone 5 is installed, and its special conical shape is used to assist the discharge of the concentrate. Under the guidance of the guiding cone 501, the concentrate can be discharged from the concentrate flow outlet 101 at the end of the oil outlet 302, that is, the condensation outlet 701, to complete the discharge of the finished concentrate.

[0046] In addition to improving the concentrate discharge efficiency, the setting of the guiding inner cone 5 also reduces the residual and scaling of the concentrate in the inner tube 2, which not only reduces the frequency and difficulty of cleaning the inside of the inner tube 2, but also reduces the risk of equipment corrosion and damage caused by the residual concentrate, extends the service life of the equipment, reduces the maintenance cost and downtime of the equipment, and improves the reliability and economy of the equipment.

[0047] Furthermore, it also includes: a spiral guide plate 6 is arranged on the inner wall of the inner cylinder 2 , and the spiral guide plate 6 is configured to guide the concentrated liquid in the inner cylinder 2 to the guide inner cone 5 .

[0048] Furthermore, there are a plurality of spiral guide plates 6 , which are arranged along the circumference of the guiding inner cone 5 .

[0049] In the present embodiment, it is further considered that the flow trend of the concentrated liquid in the inner cylinder 2 is better ensured when the inner cylinder 2 rotates, so as to avoid the concentrated liquid being retained in the inner cylinder 2 and unable to be discharged. Therefore, a plurality of spiral guide plates 6 are arranged along the circumference of the guiding inner cone 5, so as to further enhance the drainage capacity of the concentrated liquid. They can make full use of the rotation of the inner cylinder 2, and quickly and effectively guide the concentrated liquid at different positions in the inner cylinder 2 to the guiding inner cone 5, so as to avoid the concentrated liquid being retained in the cylinder.

[0050] Specifically, the spiral guide plate 6 can be made of metal or polymer material with certain strength and corrosion resistance, and its shape is spiral. The pitch and spiral angle are optimized according to the size of the inner cylinder 2, the rotation speed and the properties of the concentrated liquid (such as viscosity, concentration, etc.). Several spiral guide plates 6 are evenly arranged in a circle around the guiding inner cone 5, and the spacing between adjacent spiral guide plates 6 is kept consistent, usually between a few centimeters and more than ten centimeters.

[0051] Even if the guiding inner cone 5 and the spiral guide plate 6 are added, the concentrated liquid in the inner cylinder 2 will not be discharged quickly. The two are just convenient for discharge under its rotation. Whether it can be discharged depends on the rotation speed of the inner cylinder 2, which depends on the flow rate of the heating area 3. During normal heat exchange, the inner cylinder 2 rotates at a low speed, fully and quickly exchanges heat, and discharges the evaporated gas; after the concentration is completed, the inner cylinder 2 rotates at a high speed again to quickly discharge the finished concentrated liquid.

[0052] Furthermore, the heating area 3 is annular, and the width of the force-bearing baffle 4 is smaller than the ring width of the heating area 3 .

[0053] Furthermore, there are a plurality of force-bearing baffles 4 , which are arranged along the circumference of the inner tube 2 .

[0054] In this embodiment, the heating area 3 is designed to be annular, providing a continuous channel for the fluid around the inner tube 2, and the width of the multiple circumferentially arranged force baffles 4 is smaller than the ring width of the heating area 3 to avoid blocking the continuous channel. The fluid can form complex turbulence and reflux between the baffles and between the baffles and the inner wall of the heating area 3, thereby increasing the relative speed and contact area between the fluid and the outer wall of the inner tube 2 and strengthening the heat exchange process. At the same time, a number of force baffles 4 are arranged circumferentially around the inner tube 2, ensuring that all parts of the inner tube 2 in the circumferential direction can be affected by the fluid, thereby avoiding local uneven cooling.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A vacuum condensate automatic discharge system, characterized in that: include: A concentration tank (7), wherein the concentration tank (7) has a condensation port (701); A storage tank (8), wherein the storage tank (8) has an inlet port (801), an exhaust port (802) and a discharge port (803); A discharge tank (9), wherein the discharge tank (9) has a second inlet (901), a second exhaust port (902) and a second discharge port (903); A connecting pipe (10), wherein two ends of the connecting pipe (10) are respectively connected to the condensation port (701) and the inlet port (801); A second connecting pipe (11), wherein two ends of the second connecting pipe (11) are respectively connected to the first discharge port (803) and the second inlet port (901); A valve (12), the connecting pipe (11) and the discharge port (903) are both provided with the valve (12); A vacuum pump (13), wherein the vacuum pump (13) is arranged on the exhaust port 1 (802).

2. The vacuum condensate automatic discharge system according to claim 1, characterized in that: The concentration tank (7) comprises: An outer cylinder body (1) and an inner cylinder (2), wherein the inner cylinder (2) is rotatably arranged in the outer cylinder body (1), both ends of the outer cylinder body (1) are provided with a concentration flow port (101), both of the two concentration flow ports (101) are connected to the inner cylinder (2), a heating area (3) is formed between the outer wall of the inner cylinder (2) and the inner wall of the outer cylinder body (1), and the heating area (3) has an oil inlet (301) and an oil outlet (302); a force-bearing baffle (4), the force-bearing baffle (4) being arranged on the outer wall of the inner cylinder (2) and located in the heating area (3), the force-bearing baffle (4) being configured to drive the inner cylinder (2) to rotate under the action of the fluid in the heating area (3); Wherein, the concentration flow outlet (101) at one end of the outer cylinder body (1) is the condensation outlet (701).

3. The vacuum condensate automatic discharge system according to claim 2, characterized in that: The inner cylinder (2) is located between the oil inlet (301) and the oil outlet (302), and the inner wall of the outer cylinder body (1) is provided with a spiral guide groove (102), and the spiral guide groove (102) is arranged along the periphery of the inner cylinder (2).

4. The vacuum condensate automatic discharge system according to claim 3, characterized in that: The oil inlet (301) is a tangential oil inlet (301), the oil outlet (302) is a tangential oil outlet (302), the outer cylinder body (1) and the inner cylinder (2) are coaxially arranged, and the two concentrated flow ports (101) are both located on an extension line of the rotation axis of the inner cylinder (2).

5. The vacuum condensate automatic discharge system according to claim 4, characterized in that: Both ends of the inner wall of the outer cylinder body (1) are provided with a centering conical surface (103), and the center position of the centering conical surface (103) is provided with the concentration flow outlet (101). Both ends of the inner cylinder (2) are provided with a centering inner conical surface (201), and the centering inner conical surface (201) is adapted in shape to the centering conical surface (103), and the centering inner conical surface (201) is rotatably connected to the centering conical surface (103). The center position of the centering inner conical surface (201) is provided with a connecting port (202), and the concentration flow outlet (101) is connected to the inner cylinder (2) through the connecting port (202).

6. The vacuum condensate automatic discharge system according to claim 4, characterized in that: The inner cylinder (2) is arranged with its rotation axis in the horizontal direction, and further comprises: A guiding inner cone (5), wherein the guiding inner cone (5) is arranged in the inner cylinder (2) and is located at one end of the inner cylinder (2) close to the oil outlet (302), the guiding inner cone (5) is coaxially arranged with the inner cylinder (2), and the guiding inner cone (5) has a guiding conical surface (501), and the guiding conical surface (501) is configured to guide the concentrated liquid in the inner cylinder (2) to the concentrated flow outlet (101).

7. The vacuum condensate automatic discharge system according to claim 6, characterized in that: Also includes: A spiral guide plate (6), the spiral guide plate (6) being arranged on the inner wall of the inner cylinder (2), the spiral guide plate (6) being configured to guide the concentrated liquid in the inner cylinder (2) to the guide inner cone (5).

8. The vacuum condensate automatic discharge system according to claim 7, characterized in that: There are a plurality of spiral guide plates (6), and the plurality of spiral guide plates (6) are arranged along the circumference of the guide inner cone (5).

9. The vacuum condensate automatic discharge system according to claim 2, characterized in that: The heating area (3) is annular, and the width of the force-bearing baffle (4) is smaller than the ring width of the heating area (3).

10. The vacuum condensate automatic discharge system according to claim 9, characterized in that: There are a plurality of the force-bearing baffles (4), and the plurality of the force-bearing baffles (4) are arranged along the circumference of the inner cylinder (2).

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