Impurity-containing wastewater rapid drying treatment device and drying treatment method

Abstract

The invention relates to the related technical field of wastewater treatment, in particular to an impurity-containing wastewater rapid drying treatment device and a drying treatment method.The impurity-containing wastewater rapid drying treatment device comprises a support and further comprises two vertical arms, the two vertical arms are fixed to the support, a first rotating shaft and a second rotating shaft are rotationally installed on the two vertical arms respectively, and a roller is fixed between the first rotating shaft and the second rotating shaft; the roller is connected with an indirect material conveying mechanism arranged on the support; the annular part is movably arranged in the roller, can synchronously rotate with the roller, and can be driven by a power mechanism arranged on the support to move in the axial direction of the roller; when the ring body moves, condensate water drops are collected, the condensate water drops do not need to slide down through gravity, the condensate water can be efficiently transferred through the guide pipe, the situation that the efficiency of transferring heat to the outer wall of the roller is low due to the fact that the condensate water is hung on the wall and heat resistance between the inner wall of the roller and heating steam is increased is avoided, and the fluidity of the condensate water is improved; therefore, the guide pipe can transfer the condensate water in time more quickly.

Description

Technical Field

[0001] The present invention relates to the technical field related to wastewater treatment, and in particular to a rapid drying treatment device and a drying treatment method for wastewater containing impurities. Background Art

[0002] In wastewater treatment processes, drying wastewater is performed to remove moisture, minimize its volume, render it harmless, and recycle it as a resource, thereby lowering treatment costs, minimizing environmental pollution, and recovering valuable substances. Drum scraper dryers can process high-humidity wastewater, forming a film on its surface for effective drying. They also offer advantages such as simple structure, stable operation, and ease of control, enabling rapid wastewater drying.

[0003] Before the scraper drum dryer starts working, it must first go through a preheating process to raise the drum to a temperature suitable for drying. During the preheating process of the scraper drum dryer, steam enters the drum, and the temperature of the inner wall of the drum is relatively low (initial state). When the steam cools, it condenses into condensed water and hangs on the wall. The presence of condensed water increases the thermal resistance between the inner wall of the drum and the heated steam, and easily leads to uneven temperature distribution on the outer wall of the drum, thereby affecting the drying effect. Therefore, existing scraper drum dryers are equipped with a siphon tube extending into the drum to use the siphon tube to draw out the condensed water.

[0004] The siphon tube on the existing drum scraper dryer generally extends from the end of the drum shaft, is bent, and the end is close to the inner wall of the bottom of the drum. During operation, the condensed water droplets attached to the inner wall of the drum and dispersed need to rely on gravity to slide down before the siphon tube can smoothly transfer them. However, it takes a certain amount of time for the condensed water droplets to slide, especially during the operation of the machine. If the generated condensed water is not removed in time, it will lead to uneven temperature of the outer wall of the drum, which in turn makes the drying effect poor. Therefore, for conventional drum scraper dryers, their method of transferring condensed water still has major disadvantages. Summary of the Invention

[0005] The object of the present invention is to provide a rapid drying treatment device and a drying treatment method for wastewater containing impurities, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A device for rapidly drying and treating impure wastewater includes a support and: Two vertical arms are fixed on the support, and a first rotating shaft and a second rotating shaft are rotatably mounted on the two vertical arms respectively. A roller is fixed between the first rotating shaft and the second rotating shaft, and the roller is connected to an indirect material transmission mechanism provided on the support; The annular member is movably disposed in the drum and can rotate synchronously with the drum. It can also be driven by a power mechanism disposed on the support to move along the axial direction of the drum, collect condensed water on the inner wall of the drum, and enable a conduit disposed in the drum to transfer the collected condensed water to the outside of the drum. The steam-passing mechanism is connected to the drum and is used to pass steam into the drum to evaporate the material film on the outer wall of the drum. A scraper is also provided on the support to scrape off the dry material attached to the outer wall of the drum.

[0007] As a further solution of the present invention: the annular member includes a ring body slidably arranged in the drum, the ring body is sealed and slidably fitted with the inner wall of the drum, and is connected to the power mechanism, the half-section of the ring body is "V"-shaped, and the ring body is also provided with a notch located at the lowest point of the "V" shape.

[0008] As a further solution of the present invention: the power mechanism includes a follower structure connecting the second rotating shaft and the ring body and a pneumatic component installed on the support, the pneumatic component includes a first cylinder installed on the vertical arm, and a connecting block is fixed to the movable end of the first cylinder.

[0009] As a further solution of the present invention: the follower structure includes a horizontal shaft that is slidably fitted with the second rotating shaft, one end of the horizontal shaft is fixed to the ring body, and the other end is rotatably connected to the connecting block, two strip-shaped protrusions are provided on the outer wall of the horizontal shaft, and two strip-shaped grooves that are adapted to the strip-shaped protrusions are provided on the inner wall of the second rotating shaft.

[0010] As a further solution of the present invention: the indirect material transmission mechanism includes a box body fixed on the support and a round roller movably arranged above the box body, the round roller is connected to the elastic support structure respectively arranged on both sides of the box body, and also abuts against the outer wall of the roller.

[0011] As a further embodiment of the present invention, the elastic support structure includes a column fixed to the side of the box body via a protrusion and rotatably connected to the roller shaft of the round roller, a first spring being sleeved on the outer circumference of the column, one end of the first spring being connected to the protrusion, and the other end being connected to the annular protrusion fixed to the column; The column is also fixedly connected to an assembly arm, a drive motor is installed on the assembly arm, and an output end of the drive motor is connected to the roller shaft of the round roller.

[0012] As a further solution of the present invention: the steam ventilation mechanism includes a ventilation pipe fixed on the vertical arm, and the first rotating shaft is provided with a plurality of "L"-shaped air ducts equidistantly arranged along the circumference, and the air ducts are connected to the drum. Steam can enter the drum through the ventilation pipe and the air ducts in turn, and be discharged through the discharge structure provided on the end face of the drum.

[0013] As a further solution of the present invention: an annular groove is provided at one end of the roller facing the second rotating shaft, and the derivation structure includes a circular cover arranged in the annular groove and sealed and rotatably connected to the roller, the circular cover is connected to the air outlet pipe fixed on the vertical arm, and the end arm of the roller is provided with an air hole connected to the circular cover.

[0014] As a further solution of the present invention: a group of support members are respectively provided on the two vertical arms, and the scraper is arranged between the two groups of support members, the support member includes a support arm fixed to the vertical arm, the support arm is provided with a guide groove, a first slider and a second slider are slidably provided in the guide groove, and the first slider is fixedly connected to a connecting plate parallel to the axial direction of the drum and fixed to the scraper; A guide column is also fixed in the guide groove, and the guide column is slidably connected to the first slider and the second slider. The outer periphery of the guide column is provided with a second spring whose two ends are respectively connected to the first slider and the second slider. A second cylinder is fixed on the support arm, and the movable end of the second cylinder is fixed to the second slider.

[0015] The method for drying and treating impurity-containing wastewater, using the above-mentioned treatment device, comprises the following steps: Step 1: preheating, high-temperature steam is introduced into the drum through the steam-passing mechanism to increase the temperature of the drum; Step 2: The power mechanism drives the annular member to move along the axial direction of the drum, scraping and collecting the condensed water on the drum wall, and the duct leads the condensed water to the outside of the drum; Step 3: introducing wastewater into the box; Step 4: The drum and the roller rotate, and the material film on the outer wall of the drum is heated and dried; Step 5: The scraper scrapes the dry material off the outer wall of the drum.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present application provides a ring body movably arranged inside the drum, and the two end faces of the ring body are specially designed so that the half cross-section of the ring body is in a "V" shape. During the drum preheating process, the ring body can slide along the axial direction of the drum inside the drum to scrape off the condensed water droplets on the inner wall of the drum. In addition, due to the inclined arrangement of the end faces of the ring body, the condensed water tends to flow to the notch, which has a collecting effect on the condensed water droplets. There is no need to rely on the condensed water droplets to slide down by gravity, which is conducive to the efficient transfer of condensed water by the conduit, and avoids the increase of thermal resistance between the inner wall of the drum and the heating steam due to the condensed water sticking to the wall, which makes the heat transfer to the outer wall of the drum inefficient. During the drying process, the ring body gathers the condensed water droplets, allowing the scattered droplets to converge into a stream, improving the fluidity of the condensed water, so that the catheter can transfer the condensed water more quickly and in a timely manner; In addition, an indirect material transfer mechanism is set on the support. The wastewater in the box is first transferred to the outer wall of the round roller, and then transferred from the outer wall of the round roller to the outer wall of the drum. This indirect method makes the material film formed on the outer wall of the drum more effective. The rotation of the round roller can make the wastewater more evenly distributed, avoiding the problem of uneven distribution of material liquid or uneven spraying of nozzles caused by direct immersion of the drum in the wastewater pool. In addition, the way the round roller conducts wastewater can reduce the splashing of wastewater on the drum surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of an embodiment of a device for rapidly drying and treating impurity-containing wastewater.

[0018] Figure 2 This is a structural schematic diagram from another angle of an embodiment of a device for rapid drying treatment of impurity-containing wastewater.

[0019] Figure 3 This is a structural schematic diagram of another angle of an embodiment of a device for rapid drying treatment of impurity-containing wastewater.

[0020] Figure 4 This is a schematic diagram of the internal structure of the drum in one embodiment of a device for rapid drying and treating impurity-containing wastewater.

[0021] Figure 5 for Figure 4 A magnified view of the structure at point A in the middle.

[0022] Figure 6 This is a structural schematic diagram of the indirect material transfer mechanism in an embodiment of a device for rapid drying and treating impurity-containing wastewater.

[0023] Figure 7 This is a schematic structural diagram of a ring component in an embodiment of a device for rapid drying and treating impurity-containing wastewater.

[0024] Figure 8This is an exploded view of the structure of the support member in one embodiment of a device for rapid drying and treating impurity-containing wastewater.

[0025] Figure 9 This is a half-section view of the drum in one embodiment of a device for rapid drying and treating impurity-containing wastewater.

[0026] Figure 10 for Figure 9 A magnified view of the structure at point B.

[0027] Figure 11 This is a structural schematic diagram of the derived structure in an embodiment of a device for rapid drying treatment of impurity-containing wastewater.

[0028] In the figure: 1. support; 2. scraper; 3. roller; 301. annular groove; 302. air hole; 4. vertical arm; 401. vent pipe; 5. cover body; 6. first rotating shaft; 601. air duct; 7. second rotating shaft; 701. strip groove; 8. box body; 801. protrusion block; 9. round roller; 10. column; 1001. annular protrusion; 11. first spring; 12. assembly arm; 13. drive motor; 14. ring body; 1401. notch; 15. horizontal axis; 1501. strip protrusion; 16. connecting block; 17. first cylinder; 18. conduit; 19. circular cover; 1901. air outlet pipe; 20. support arm; 2001. guide column; 21. first slider; 22. second slider; 23. second cylinder; 24. second spring; 25. connecting plate. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] See also Figures 1-11 In an embodiment of the present invention, the device for rapidly drying and treating wastewater containing impurities includes a support 1 and further includes: Two vertical arms 4 are fixed on the support 1. A first rotating shaft 6 and a second rotating shaft 7 are rotatably mounted on the two vertical arms 4. A roller 3 is fixed between the first rotating shaft 6 and the second rotating shaft 7. The roller 3 is connected to the indirect material transmission mechanism provided on the support 1. The annular member is movably disposed in the drum 3 and can rotate synchronously with the drum 3. It can also be driven by the power mechanism disposed on the support 1 to move along the axial direction of the drum 3 to collect condensed water on the inner wall of the drum 3, so that the conduit 18 disposed in the drum 3 transfers the collected condensed water to the outside of the drum 3; The steam-passing mechanism is connected to the drum 3 and is used to pass steam into the drum 3 to evaporate the material film on the outer wall of the drum 3. The support 1 is also provided with a scraper 2 that can scrape off the dry material attached to the outer wall of the drum 3.

[0032] Among them, it should be supplemented that a cover body 5 is also fixedly installed on the support 1. The cover body 5 is arranged in an arc shape and is concentric with the drum 3. It should be noted that a gap is reserved between the inner wall of the cover body 5 and the outer wall of the drum 3, and the cover body 5 is provided with an exhaust port connected to an exhaust device. During operation, as the film on the outer wall of the drum 3 is heated, some smoke will be generated. If there are harmful substances in the wastewater, these smoke may be toxic. When the exhaust device is turned on, these toxic smoke can be extracted to prevent the toxic smoke from escaping into the working environment and causing pollution. Secondly, a drive motor (not numbered in the figure) is also installed on the side of the support 1. The output shaft of the drive motor is connected to the first rotating shaft 6 through a belt, and the drive motor is a speed-regulating motor. When working, it drives the drum 3 to rotate at a suitable speed through the first rotating shaft 6.

[0033] Specifically, during the operation, as the drum 3 rotates, the indirect material transfer mechanism can transfer the wastewater to the outer wall of the drum 3, so that a material film is formed on the outer wall of the drum 3, and high-temperature steam enters the interior of the drum 3 through the steam venting mechanism, and the heat is transferred to the outer wall of the drum 3, so that the moisture in the material film is evaporated by the heat, thereby achieving the drying treatment of the wastewater. After the material film is dried, the scraper 2 scrapes off the dry material remaining on the outer wall of the drum 3.

[0034] Furthermore, similar to conventional scraper drum dryers, each time the device starts working, the drum 3 needs to be preheated so that the drum 3 reaches the temperature required for drying the wastewater. During the preheating process, the drum 3 does not need to rotate, and steam is introduced into the drum 3 through the steam ventilation mechanism. At the same time, the power mechanism works to drive the annular member to move axially inside the drum 3, scraping off and gathering the condensed water attached to the inner wall of the drum 3, so that the condensed water gathers at the lowest point inside the drum 3, thereby facilitating the transfer of the condensed water by the conduit 18, avoiding the problem of low heat transfer efficiency due to condensed water hanging on the wall and uneven heating of the material film on the outer wall of the drum 3.

[0035] Please refer again Figure 4 and Figure 5 The annular member includes a ring body 14 that is slidably arranged in the drum 3. The ring body 14 is sealed and slidably fitted with the inner wall of the drum 3 and is connected to the power mechanism. The half-section of the ring body 14 is "V"-shaped, and the ring body 14 is also provided with a notch 1401 located at the lowest point of the "V" shape.

[0036] Specifically, when the power mechanism drives the ring body 14 to slide along the axial direction of the drum 3, due to the special design of the end face of the ring body 14, that is, the half-section of the ring body 14 is in a "V" shape, the ring body 14 can scrape off the condensed water hanging on the wall during the sliding process. On the other hand, the inclined setting of the end face of the ring body 14 will cause the condensed water to flow to the notch 1401. During the preheating process, the notch 1401 is located at the lowest point inside the drum 3. The condensed water can be extracted and transferred by the conduit 18 through the notch 1401, thereby avoiding the accumulation of a large amount of condensed water in the drum 3 during the preheating process, and avoiding the increase of the thermal resistance between the inner wall of the drum 3 and the heating steam due to the condensed water hanging on the wall, which makes the heat transfer to the outer wall of the drum 3 inefficient. During the drying process, when the temperature of the drum 3 increases, the temperature of the inner wall of the drum 3 also increases accordingly, and the temperature difference between the steam and the inner wall of the drum 3 decreases, resulting in a slower condensation rate of the steam, and the condensed water generated per unit time will be reduced. During operation, the ring body 14 rotates synchronously with the drum 3. When the condensed water needs to be cleaned, the ring body 14 slides along the axial direction of the drum 3. The special design of the end face is used to help gather the condensed water, so that the scattered small droplets can gather, promote flow, and improve the transfer efficiency of the conduit 18 for the condensed water, thereby providing a guarantee for the drying effect.

[0037] It should be further explained that the conduit 18 can use a pump or a siphon principle to extract and transfer the condensed water. This application does not make any specific restrictions on this and can be selected according to actual conditions.

[0038] Please refer again Figure 3 and Figure 7 The power mechanism includes a follower structure connecting the second rotating shaft 7 and the ring body 14, and a pneumatic assembly mounted on the support 1. The pneumatic assembly includes a first cylinder 17 mounted on the vertical arm 4, with a connecting block 16 fixed to the movable end of the first cylinder 17. The follower structure includes a transverse shaft 15 that slidably engages with the second rotating shaft 7. One end of the transverse shaft 15 is fixed to the ring body 14, and the other end is rotatably connected to the connecting block 16. Two strip-shaped protrusions 1501 are provided on the outer wall of the transverse shaft 15, and two strip-shaped grooves 701 that adapt to the strip protrusions 1501 are provided on the inner wall of the second rotating shaft 7.

[0039] Specifically, the central axes of the first rotating shaft 6 , the roller 3 , the second rotating shaft 7 and the transverse shaft 15 coincide with each other, and the strip-shaped protrusion 1501 and the strip-shaped groove 701 are parallel to the central axis of the transverse shaft 15 .

[0040] When the drum 3 rotates, the second rotating shaft 7 can drive the horizontal shaft 15 to rotate through the strip groove 701 and the strip protrusion 1501, so that the horizontal shaft 15 can drive the ring body 14 and the drum 3 to rotate synchronously, and the ring body 14 and the drum 3 remain relatively stationary. During operation, the first cylinder 17 works regularly and drives the horizontal shaft 15 to slide relative to the second rotating shaft 7 through the connecting block 16, so that the ring body 14 slides in the drum 3. Compared with the method of using the gravity of the condensed water to slide and collect and then transfer it by the conduit 18, the ring body 14 can use the special design of its own end face to collect the small droplets scattered on the inner wall of the drum 3 during the sliding process, thereby effectively promoting the flow of condensed water, improving the efficiency of condensed water transfer, and providing effective guarantee for the drying effect.

[0041] Please refer again Figure 3 and Figure 6 The indirect material transmission mechanism includes a box body 8 fixed on the support 1 and a round roller 9 movably arranged above the box body 8. The round roller 9 is connected to the elastic support structure respectively arranged on both sides of the box body 8, and also abuts against the outer wall of the drum 3.

[0042] The elastic support structure includes a column 10 fixed to the side of the box body 8 through a protrusion block 801 and rotatably connected to the roller shaft of the round roller 9. The outer periphery of the column 10 is provided with a first spring 11, one end of the first spring 11 is connected to the protrusion block 801, and the other end is connected to the annular protrusion 1001 fixed on the column 10; wherein, the column 10 is also fixedly connected to an assembly arm 12, and a drive motor 13 is installed on the assembly arm 12, and the output end of the drive motor 13 is connected to the roller shaft of the round roller 9.

[0043] During operation, the wastewater to be treated is input into the box body 8 so that the wastewater submerges the lowest point of the outer edge of the round roller 9. The first spring 11 is in a compressed state, providing elastic supporting force, so that the outer walls of the round roller 9 and the drum 3 are in contact. While the drum 3 rotates, the drive motor 13 drives the round roller 9 to rotate. Therefore, the wastewater in the box body 8 is first transferred to the outer wall of the round roller 9, and then transferred from the outer wall of the round roller 9 to the outer wall of the drum 3. This indirect method makes the material film formed on the outer wall of the drum 3 more effective. The rotation of the round roller 9 can make the wastewater more evenly distributed, avoiding the problem of uneven distribution of material liquid or uneven spraying of the nozzle due to the direct immersion of the drum 3 in the wastewater pool. In addition, the way the round roller 9 conducts wastewater can reduce the splashing of wastewater on the surface of the drum 3.

[0044] Preferably, the rotation direction of the round roller 9 is opposite to that of the drum 3. The rotation in opposite directions can generate shear force between the round roller 9 and the drum 3, which helps to more effectively transfer the wastewater from the round roller 9 to the surface of the drum 3. It is especially suitable for high-viscosity wastewater, which can break the adhesion of the viscous liquid film and improve the transfer efficiency.

[0045] It should also be added that, during the treatment process, the liquid level of the wastewater in the box body 8 should be controlled in real time, and it is necessary to ensure that the liquid level of the wastewater can be higher than the lowest point of the outer edge of the round roller 9, so as to ensure the continuity of the round roller 9 in transmitting the wastewater to the drum 3. To this end, a liquid level sensor can be set in the box body 8 to monitor the liquid level of the wastewater in the box body 8 in real time, so as to realize automatic replenishment of wastewater and maintain the wastewater level at an ideal level; specifically, during operation, the liquid level of the wastewater in the box body 8 needs to be maintained within a specific range to ensure that the round roller 9 can carry the wastewater when it rotates. In actual work, a piston plate for raising the wastewater level can be sealed and slidably set in the box body 8. During operation, as the wastewater is consumed, the piston plate is driven to rise, thereby automatically maintaining the liquid level within a reasonable range.

[0046] Please refer again Figures 9-11 The steam ventilation mechanism includes a ventilation pipe 401 fixed on the vertical arm 4, and the first rotating shaft 6 is provided with a plurality of "L"-shaped air channels 601 equidistantly arranged along the circumference. The air channels 601 are connected to the drum 3. Steam can enter the drum 3 through the ventilation pipe 401 and the air channels 601 in turn, and be discharged through the discharge structure provided on the end surface of the drum 3.

[0047] Furthermore, the air duct 601 is located at an eccentric position of the first rotating shaft 6. The purpose of this arrangement is to provide space for the installation of the duct 18. The duct 18 is fixed to the vent pipe 401 and is arranged in an "L" shape, including a horizontal section and a vertical section. The horizontal section is concentric with the first rotating shaft 6 to prevent the duct 18 from affecting the rotation of the drum 3.

[0048] An annular groove 301 is provided at one end of the drum 3 facing the second rotating shaft 7. The derivation structure includes a circular cover 19 arranged in the annular groove 301 and sealed and rotatably connected to the drum 3. The circular cover 19 is connected to the air outlet pipe 1901 fixed on the vertical arm 4, and the end arm of the drum 3 is provided with an air hole 302 connected to the circular cover 19.

[0049] During operation, high-temperature steam is introduced through the vent pipe 401, and then the steam enters the air channel 601 corresponding to the vent pipe 401, and is then introduced into the drum 3. The steam can enter the circular cover 19 through the air hole 302, and then be discharged through the outlet pipe 1901, thereby realizing a circulation path for high-temperature steam and ensuring the effective renewal of steam during the drying process of wastewater.

[0050] Please refer again Figure 8 , a group of support members are respectively provided on the two vertical arms 4, and the scraper 2 is provided between the two groups of support members, and the support member includes a support arm 20 fixed to the vertical arm 4, and a guide groove is provided on the support arm 20, and a first slider 21 and a second slider 22 are slidably provided in the guide groove, and the first slider 21 is fixedly connected to a connecting plate 25 parallel to the axial direction of the roller 3 and fixed to the scraper 2; In which, a guide column 2001 is also fixed in the guide groove, and the guide column 2001 is slidingly connected to the first slider 21 and the second slider 22. The outer periphery of the guide column 2001 is provided with a second spring 24 whose two ends are respectively connected to the first slider 21 and the second slider 22. A second cylinder 23 is fixed on the support arm 20, and the movable end of the second cylinder 23 is fixed to the second slider 22.

[0051] The second spring 24 is in a compressed state. Therefore, under the elastic support of the second spring 24, the scraper 2 can be made to fit the outer wall of the drum 3 and exert a certain pressure. During the rotation of the drum 3, the dry material can be scraped off when passing through the scraper 2, thereby achieving the cleaning function of the drum 3. It should be added that the scraper 2 and the connecting plate 25 are detachably connected, thereby facilitating the replacement and maintenance of the scraper 2. Specifically, the connecting plate 25 is pulled in a direction away from the roller 3 to separate the scraper 2 from the roller 3, and the scraper 2 is removed from the connecting plate 25. This avoids scratches on the outer wall of the roller 3 during the replacement process due to the fixed arrangement of the scraper 2. The roller 3 will experience temperature changes during operation. Frequent thermal expansion and contraction may cause stress inside the material, which in turn causes slight deformation of the surface and forms unevenness. In this application, the scraper 2 is in contact with the outer wall of the roller 3 under the elastic support of the second spring 24. The scraper 2 can be lifted a small distance and automatically adapt to the slight unevenness of the surface of the roller 3, thereby avoiding greater damage to the roller 3 due to the fixed setting of the scraper 2.

[0052] As another embodiment of the present invention, a method for drying wastewater containing impurities is also proposed, which uses the above-mentioned treatment device and includes the following steps: Step 1: preheating, high-temperature steam is introduced into the drum 3 through the steam-passing mechanism to increase the temperature of the drum 3; Step 2: The power mechanism drives the annular member to move along the axial direction of the drum 3 to scrape and collect the condensed water on the wall of the drum 3, and the conduit 18 leads the condensed water to the outside of the drum 3; Step 3: introducing wastewater into the box 8; Step 4: The drum 3 and the round roller 9 rotate, and the film on the outer wall of the drum 3 is heated and dried; Step 5: The scraper 2 scrapes the dry material on the outer wall of the drum 3.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0054] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Rapid drying treatment device for wastewater containing impurities, including support; It is characterized in that Also includes: Two vertical arms are fixed on the support, and a first rotating shaft and a second rotating shaft are rotatably mounted on the two vertical arms respectively. A roller is fixed between the first rotating shaft and the second rotating shaft, and the roller is connected to an indirect material transmission mechanism provided on the support; The annular member is movably disposed in the drum and can rotate synchronously with the drum. It can also be driven by a power mechanism disposed on the support to move along the axial direction of the drum, collect condensed water on the inner wall of the drum, and enable a conduit disposed in the drum to transfer the collected condensed water to the outside of the drum. The steam-passing mechanism is connected to the drum and is used to pass steam into the drum to evaporate the material film on the outer wall of the drum. A scraper is also provided on the support to scrape off the dry material attached to the outer wall of the drum.

2. The rapid drying treatment device for impurity-containing wastewater according to claim 1, characterized in that: The annular member includes a ring body that is slidably arranged in the roller. The ring body is in sealing and sliding contact with the inner wall of the roller and is connected to the power mechanism. The half-section of the ring body is "V"-shaped, and the ring body is also provided with a notch located at the lowest point of the "V" shape.

3. The rapid drying treatment device for impurity-containing wastewater according to claim 2, characterized in that: The power mechanism includes a follower structure connecting the second rotating shaft and the ring body and a pneumatic component installed on the support. The pneumatic component includes a first cylinder installed on the vertical arm, and a connecting block is fixed to the movable end of the first cylinder.

4. The rapid drying treatment device for impurity-containing wastewater according to claim 3, characterized in that: The follower structure includes a horizontal shaft that is slidably fitted with the second rotating shaft, one end of the horizontal shaft is fixed to the ring body, and the other end is rotatably connected to the connecting block, two strip-shaped protrusions are provided on the outer wall of the horizontal shaft, and two strip-shaped grooves that are adapted to the strip-shaped protrusions are provided on the inner wall of the second rotating shaft.

5. The rapid drying treatment device for impurity-containing wastewater according to claim 1, characterized in that: The indirect material transmission mechanism includes a box body fixed on the support and a round roller movably arranged above the box body. The round roller is connected to the elastic support structures respectively arranged on both sides of the box body and also abuts against the outer wall of the roller.

6. The rapid drying treatment device for impurity-containing wastewater according to claim 5, characterized in that: The elastic support structure includes a column fixed to the side of the box body through a protrusion block and rotatably connected to the roller shaft of the round roller, and a first spring is sleeved on the outer circumference of the column, one end of the first spring is connected to the protrusion block, and the other end is connected to the annular protrusion fixed to the column; The column is also fixedly connected to an assembly arm, a drive motor is installed on the assembly arm, and an output end of the drive motor is connected to the roller shaft of the round roller.

7. The rapid drying treatment device for impurity-containing wastewater according to claim 1, characterized in that: The steam ventilation mechanism includes a ventilation pipe fixed on the vertical arm, and the first rotating shaft is provided with a plurality of "L"-shaped air ducts equidistantly arranged along the circumference. The air ducts are connected to the drum. Steam can enter the drum through the ventilation pipe and the air ducts in turn, and be discharged through the outlet structure provided on the end surface of the drum.

8. The rapid drying treatment device for impurity-containing wastewater according to claim 7, characterized in that: An annular groove is provided at one end of the roller facing the second rotating shaft, and the derivation structure includes a circular cover arranged in the annular groove and sealed and rotatably connected to the roller, the circular cover is connected to the air outlet pipe fixed on the vertical arm, and the end arm of the roller is provided with an air hole connected to the circular cover.

9. The rapid drying treatment device for impurity-containing wastewater according to claim 1, characterized in that: A group of support members are respectively provided on the two vertical arms, and the scraper is provided between the two groups of support members. The support member includes a support arm fixed to the vertical arm, and a guide groove is provided on the support arm. A first slider and a second slider are slidably provided in the guide groove. The first slider is fixedly connected to a connecting plate parallel to the axial direction of the roller and fixed to the scraper; A guide column is also fixed in the guide groove, and the guide column is slidably connected to the first slider and the second slider. The outer periphery of the guide column is provided with a second spring whose two ends are respectively connected to the first slider and the second slider. A second cylinder is fixed on the support arm, and the movable end of the second cylinder is fixed to the second slider.

10. A method for drying wastewater containing impurities, using the treatment device according to claim 1, characterized in that: The following steps are involved: Step 1: preheating, high-temperature steam is introduced into the drum through the steam-passing mechanism to increase the temperature of the drum; Step 2: The power mechanism drives the annular member to move along the axial direction of the drum, scraping and collecting the condensed water on the drum wall, and the duct leads the condensed water to the outside of the drum; Step 3: introducing wastewater into the box; Step 4: The drum and the roller rotate, and the material film on the outer wall of the drum is heated and dried; Step 5: The scraper scrapes the dry material off the outer wall of the drum.

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