A thin layer sludge dryer for sludge treatment

Abstract

The present application provides a kind of for sludge treatment thin layer sludge dryer, relate to sludge treatment technical field.A kind of for sludge treatment thin layer sludge dryer, including dryer main body, first sealing cover is installed at one end of dryer main body, second sealing cover is installed at the end away from first sealing cover of dryer main body, bottom plate is provided at the bottom of dryer main body, support frame is fixed at the top of bottom plate, drive mechanism is installed at one end of dryer main body, first heating cavity is arranged in the inside of dryer main body, second heating cavity is arranged in the side of first heating cavity.The present application can let steam enter to the inside of heating cavity evenly, to ensure that heat distribution is uniform, avoid local overheating or heat exchange is insufficient, to maintain stable drying effect, uniform steam distribution makes heating cavity wall temperature consistent, sludge thin layer is heated evenly, moisture evaporation is more thorough, and drying efficiency is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge treatment, and particularly relates to a thin-layer sludge drying machine for sludge treatment. BACKGROUND

[0002] In the industrial and municipal sewage treatment process, sludge treatment has been a problem concerned by people in the industry, and high-yield, high-moisture sludge is extremely inconvenient in storage, transportation, loading and unloading, and therefore sludge drying treatment is imperative. The steam drying method is to utilize steam heat energy, and then evaporate the water in the sludge through heat exchange of the shell of the heat exchanger to dry the sludge. When the temperature of low-pressure steam is 150-230 DEG C, the safety of sludge drying is one of the most important problems, especially when the sludge drying machine is operated under high-temperature dust conditions, the control of oxygen content is particularly important.

[0003] The existing thin-layer sludge drying machine for sludge treatment generally pours sludge into the inside of the drying machine during use, and heats and dries the sludge through steam heat exchange, so as to achieve the drying operation of the sludge. However, during use, since the steam enters the heating cavity through a single pipeline, the steam is easy to be unevenly distributed in the pipeline, so that the heat load of some areas is too high, which may cause fouling, and the heat exchange efficiency of other areas is reduced, thereby affecting the drying quality and efficiency of the sludge, and being inconvenient for users to use. SUMMARY

[0004] The present application provides a thin-layer sludge drying machine for sludge treatment, to solve the problem that the existing thin-layer sludge drying machine for sludge treatment is generally poured into the inside of the drying machine during use, and heats and dries the sludge through steam heat exchange, so as to achieve the drying operation of the sludge. However, during use, since the steam enters the heating cavity through a single pipeline, the steam is easy to be unevenly distributed in the pipeline, so that the heat load of some areas is too high, which may cause fouling, and the heat exchange efficiency of other areas is reduced, thereby affecting the drying quality and efficiency of the sludge, and being inconvenient for users to use.

[0005] The application provides a thin-layer sludge drying machine for sludge treatment, which comprises a drying machine body, a first sealing cover is arranged at one end of the drying machine body, a second sealing cover is arranged at the end of the drying machine body away from the first sealing cover, a bottom plate is arranged at the bottom end of the drying machine body, a support frame is fixed to the top end of the bottom plate, a driving mechanism is arranged at one end of the drying machine body, a first heating cavity is arranged in the drying machine body, a second heating cavity is arranged at one end of the first heating cavity, a partition plate is arranged between the first heating cavity and the second heating cavity, a feeding mechanism is arranged at one side of the drying machine body, a heat conduction mechanism is arranged at the top end of the drying machine body, a heat conduction pipe is arranged at the top end of the drying machine body, a partition plate is arranged in the heat conduction pipe, sealing plugs are arranged at both ends of the partition plate, reset springs are fixed to the bottom end of the sealing plugs, moving pistons are connected to the bottom end of the reset springs, a first air outlet pipe is arranged at one end of the heat conduction pipe, a second air outlet pipe is arranged at the end of the heat conduction pipe away from the first air outlet pipe, a purification and exhaust mechanism is arranged at the top end of the drying machine body, a discharge port is arranged at the bottom end of the drying machine body, and a water outlet is arranged at the bottom of the drying machine body.

[0006] Preferably, the driving mechanism comprises a driving motor arranged at one end of the drying machine body, a speed reducer is arranged at one end of the driving motor, and a transmission shaft is arranged at one end of the speed reducer.

[0007] Preferably, one end of the transmission shaft is connected with a rotor, a solid scraper is arranged on the outer wall of one end of the rotor, a propeller is arranged on the outer wall of the end of the rotor away from the solid scraper, and a limiting rod is fixed to the end of the rotor away from the transmission shaft.

[0008] Preferably, one end of the first sealing cover is provided with a first bearing shaft seal, and one end of the second sealing cover is fixed with a second bearing shaft seal.

[0009] Preferably, the feeding mechanism comprises a feeding pipe arranged at one side of the drying machine body, a preheating pipe is sleeved on the outer wall of the feeding pipe, and a heat conduction cavity is arranged in the preheating pipe.

[0010] Preferably, the heat conduction mechanism comprises a joint arranged at the top end of the heat conduction pipe, and a limiting block is fixed to the bottom end of the moving piston.

[0011] Preferably, a constant pressure hole is arranged in the middle end of the partition plate, constant pressure pipes are arranged on one side of the first air outlet pipe and the second air outlet pipe, and a one-way valve is arranged on one side of the constant pressure pipe.

[0012] Preferably, the purification and exhaust mechanism comprises an exhaust box arranged at the top end of the drying machine body, a gas guide pipe is connected to the top end of the exhaust box, and a purification pipe is connected to one end of the gas guide pipe.

[0013] Preferably, the inside of the purification pipe is provided with a filter plate, the top end of the filter plate is provided with a spray head, and the top end of the spray head is connected with a water collecting pipe.

[0014] Preferably, the top end of the purification pipe is connected with a through pipe, one end of the through pipe is provided with an air pump, one end of the air pump is provided with a discharge pipe, and the bottom end of the purification pipe is connected with a drain pipe. Advantages

[0015] In view of the existing thin-layer sludge drying machine for sludge treatment, in the use process, the sludge is generally poured into the drying machine, and the sludge is heated and dried by steam heat exchange, so as to achieve the drying operation of the sludge, but in the use process, since the steam enters the heating cavity through a single pipeline, the steam is easy to be unevenly distributed in the pipeline, so that the heat load of part of the area is too high, which may cause fouling, and the heat exchange efficiency of other areas is reduced, thereby affecting the drying quality and efficiency of the sludge.

[0016] 1. The sludge is stirred and pushed by the driving mechanism, so as to complete the drying operation of the sludge, the driving motor is opened, the gear of the speed reducer is driven to drive the transmission shaft and the rotor to rotate, the solid scraper and the propeller on the outer wall of the rotor are driven to rotate by the rotation of the rotor, the sludge is uniformly mixed and heat-conducted by the scraper on the rotor, and the sludge is pushed to the direction of the discharge port by the propeller, so as to complete the drying process of the sludge.

[0017] 2. The sludge to be dried is poured into the inside of the drying machine body through the feeding mechanism, and the sludge to be dried is poured into the inside of the drying machine body through the feeding pipe, in the feeding process, the hot steam in the first heating cavity enters the heat conduction cavity through the bottom end of the preheating pipe, the feeding pipe is wrapped by the heat conduction cavity, so as to preheat the sludge in the feeding pipe, and in actual use, the use length of the feeding pipe and the preheating pipe can be increased according to the preheating degree.

[0018] 3. The application in the process of sludge drying treatment, through the heat conduction mechanism to the first heating cavity and the second heating cavity inside input heat steam for heat conduction, by connecting the heat steam pipeline and the joint, in the process of use, through the heat steam pipeline, the heat steam is introduced into the inside of the heat conduction pipe, after the heat steam enters into the inside of the heat conduction pipe, it will be separated by the partition plate, under the action of gas pressure, it will be respectively extruded two groups of sealing plugs downward, until it is discharged to the inside of the first heating cavity and the second heating cavity through the first gas outlet pipe and the second gas outlet pipe, when the pressure in the first heating cavity and the second heating cavity is different, at this time, the gas in the cavity with larger pressure will push up the relative one side moving piston through the cavity inside the limiting block, so that the steam injected at the upper end of the heat conduction pipe increases the pressure required when extruding the sealing plug, the gas will extrude the sealing plug at the other end, so as to balance the pressure in the first heating cavity and the second heating cavity, at the same time, when the gas pressure increases, it will also discharge pressure to the middle of the sealing plug and the moving piston through the first gas outlet pipe or the second gas outlet pipe, at this time, the gas discharged to the middle of the sealing plug and the moving piston will flow to the constant pressure pipe at the end with smaller pressure through the constant pressure hole, and then flow into the first gas outlet pipe or the second gas outlet pipe through the one-way valve, so as to balance the pressure, the pressure balance of the first heating cavity and the second heating cavity indicates that the heat conducted by the gas in the first heating cavity and the second heating cavity is the same, so that the temperature of the first heating cavity and the second heating cavity is uniform, and the situation that the sludge drying effect is reduced due to temperature difference does not occur.

[0019] 4. In order to avoid harmful substances in the steam generated in the process of wet sludge drying, the application filters and treats the steam generated in the process of sludge drying through the exhaust gas purification mechanism, in the process of wet sludge drying, water in the wet sludge evaporates to generate steam, the steam enters into the gas guide pipe through the exhaust tank, and then the steam is introduced into the inside of the purification pipe through the gas guide pipe, the steam in the inside of the purification pipe is extracted upward by opening the air pump, in the extraction process, the steam will first pass through the filter plate to filter out large particles in the steam, at the same time, the water pipe is connected with the water pipe, the purified water is injected into the water receiving pipe, the water is atomized and sprayed by the spray head through the water receiving pipe, so that the small particle impurities in the steam are washed down by the atomized water, the purified steam is discharged through the discharge pipe along the pipe, so as to complete the purification and discharge of the steam generated in the process of sludge drying.

[0020] The above description is only a summary of the technical scheme of the embodiment of the application, in order to more clearly understand the technical means of the embodiment of the application, the content of the specification can be implemented, and in order to make the above and other purposes, characteristics and advantages of the embodiment of the application more obvious and easy to understand, the specific implementation manner of the application is as follows. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0022] Figure 1 The overall structure schematic diagram of the thin-layer sludge drying machine for sludge treatment according to the present application.

[0023] Figure 2 The internal structure schematic diagram of the drying machine main body of the thin-layer sludge drying machine for sludge treatment according to the present application.

[0024] Figure 3 The driving mechanism structure schematic diagram of the thin-layer sludge drying machine for sludge treatment according to the present application.

[0025] Figure 4 The rotor structure schematic diagram of the thin-layer sludge drying machine for sludge treatment according to the present application.

[0026] Figure 5 The feeding mechanism structure schematic diagram of the thin-layer sludge drying machine for sludge treatment according to the present application.

[0027] Figure 6 The heat-conducting cavity structure schematic diagram of the thin-layer sludge drying machine for sludge treatment according to the present application.

[0028] Figure 7 The heat-conducting mechanism structure schematic diagram of the thin-layer sludge drying machine for sludge treatment according to the present application.

[0029] Figure 8 The internal structure schematic diagram of the heat-conducting pipe of the thin-layer sludge drying machine for sludge treatment according to the present application.

[0030] Figure 9 The heating cavity structure schematic diagram of the thin-layer sludge drying machine for sludge treatment according to the present application.

[0031] Figure 10 The purification and exhaust mechanism structure schematic diagram of the thin-layer sludge drying machine for sludge treatment according to the present application.

[0032] Figure 11 The air guide pipe structure schematic diagram of the thin-layer sludge drying machine for sludge treatment according to the present application.

[0033] Figure 12 The internal structure schematic diagram of the purification pipe of the thin-layer sludge drying machine for sludge treatment according to the present application.

[0034] Reference signs:

[0035] 1, drying machine main body; 2, first sealing cover; 3, second sealing cover; 4, bottom plate; 5, support frame; 6, driving mechanism; 601, driving motor; 602, speed reducer; 603, transmission shaft; 604, first bearing shaft seal; 605, rotor; 606, solid scraper; 607, propeller; 608, limiting rod; 609, second bearing shaft seal; 7, first heating cavity; 8, second heating cavity; 9, blocking plate; 10, feeding mechanism; 1001, feeding pipe; 1002, preheating pipe; 1003, heat conduction cavity; 11, heat conduction mechanism; 1101, heat conduction pipe; 1102, joint; 1103, partition plate; 1104, sealing plug; 1105, return spring; 1106, moving piston; 1107, limiting block; 1108, first air outlet pipe; 1109, second air outlet pipe; 1110, constant pressure hole; 1111, constant pressure pipe; 1112, one-way valve; 12, purification exhaust mechanism; 1201, exhaust tank; 1202, air guide pipe; 1203, purification pipe; 1204, filter plate; 1205, water collecting pipe; 1206, spray head; 1207, through pipe; 1208, air pump; 1209, discharge pipe; 1210, drain pipe; 13, discharge port; 14, water outlet. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the use of the terms "including," "comprising," "having" and variations thereof in the specification and claims of this application and the description of the drawings are intended to cover both the inclusive and exclusive cases.

[0038] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments. It is expressly understood that the embodiments described herein are merely examples from a whole class of comparable embodiments which those skilled in the art will readily appreciate.

[0039] The positional words appearing in the following description are the directions shown in the drawings, and are not intended to limit the specific structure of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only intended to facilitate the description of the present application and simplify the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0040] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, the "connection" or "connecting" of mechanical structures can mean physical connection, for example, the physical connection can be fixed connection, for example, fixed connection by fixing member, for example, fixed connection by screw, bolt or other fixing member; the physical connection can also be detachable connection, for example, mutual clamping or clamping connection; the physical connection can also be integrally connected, for example, welding, bonding or integrally formed connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings.

[0042] The present application provides a method for preparing a compound of formula (I) as Figures 1-12The illustrated thin-layer sludge dryer for sludge treatment includes a dryer body 1, a first sealing cover 2 is installed at one end of the dryer body 1, a second sealing cover 3 is installed at the end of the dryer body 1 away from the first sealing cover 2, a bottom plate 4 is arranged at the bottom end of the dryer body 1, a support frame 5 is fixed at the top end of the bottom plate 4, a driving mechanism 6 is installed at one end of the dryer body 1, a first heating cavity 7 is arranged in the dryer body 1, a second heating cavity 8 is arranged at one end of the first heating cavity 7, a partition plate 9 is installed between the first heating cavity 7 and the second heating cavity 8, a feeding mechanism 10 is installed at one side of the dryer body 1, a heat conduction mechanism 11 is installed at the top end of the dryer body 1, a heat conduction pipe 1101 is installed at the top end of the dryer body 1, a partition plate 1103 is installed in the heat conduction pipe 1101, sealing plugs 1104 are installed at both ends of the partition plate 1103, reset springs 1105 are fixed at the bottom end of the sealing plugs 1104, moving pistons 1106 are connected to the bottom end of the reset springs 1105, a first air outlet pipe 1108 is installed at one end of the heat conduction pipe 1101, a second air outlet pipe 1109 is installed at the end of the heat conduction pipe 1101 away from the first air outlet pipe 1108, a purification and exhaust mechanism 12 is installed at the top end of the dryer body 1, a discharge port 13 is installed at the bottom end of the dryer body 1, and a water outlet 14 is installed at the bottom of the dryer body 1.The temperature difference does not occur, which reduces the sludge drying effect. The sludge to be dried is poured into the inside of the drying machine body 1 through the feeding pipe 1001. In the process of introduction, the hot steam in the first heating cavity 7 enters the heat conduction cavity 1003 through the bottom end of the preheating pipe 1002, and is wrapped around the feeding pipe 1001 through the heat conduction cavity 1003, so as to preheat the sludge in the feeding pipe 1001. In actual use, the use length of the feeding pipe 1001 and the preheating pipe 1002 can be increased according to the preheating degree. By opening the driving motor 601, the solid scraper 606 and the propeller 607 on the outer wall of the rotor 605 are driven to rotate through the gear transmission of the speed reducer 602. The sludge is uniformly mixed and heat-conducted by the scraper on the rotor 605, and is pushed to the direction of the discharge port 13 by the propeller 607, so as to complete the drying process of the sludge. In the process of drying the wet sludge, the water in the wet sludge evaporates to produce steam, which enters the gas guide pipe 1202 through the exhaust tank 1201, and then enters the inside of the purification pipe 1203. By opening the air pump 1208, the steam in the purification pipe 1203 is sucked upward. In the process of suction, the steam first passes through the filter plate 1204 to filter out large particles in the steam. At the same time, by connecting the water pipe 1205 with the water pipe, the water in the water pipe 1205 is injected into the water pipe 1205, and the water is atomized by the spray head 1206 to wash away the small particles in the steam, so as to complete the purification of the steam. The purified steam is discharged along the pipe 1207 through the exhaust pipe 1209, so as to complete the purification and discharge of the steam generated in the sludge drying process.

[0043] The scheme is through the driving mechanism 6 to drive the sludge to complete the drying operation of the sludge, the driving mechanism 6 includes the driving motor 601 installed at one end of the drying machine main body 1, the driving motor 601 is installed with the speed reducer 602 at one end, the speed reducer 602 is installed with the transmission shaft 603 at one end, the transmission shaft 603 is connected with the rotor 605 at one end, the solid scraper 606 is installed on the outer wall of one end of the rotor 605, the propeller 607 is installed on the outer wall of the end of the rotor 605 away from the solid scraper 606, the limit rod 608 is fixed on the end of the rotor 605 away from the transmission shaft 603, the first sealing cover 2 is installed with the first bearing shaft seal 604 at one end, the second sealing cover 3 is fixed with the second bearing shaft seal 609 at one end, wherein the driving motor 601 is opened, the gear transmission of the speed reducer 602 drives the transmission shaft 603 and the rotor 605 to rotate, the rotation of the rotor 605 drives the solid scraper 606 on the outer wall of the rotor 605 and the propeller 607 to rotate, the sludge is uniformly mixed and heat-conducted by the scraper on the rotor 605, the sludge is pushed to the direction of the discharge port 13 by the propeller 607, so as to complete the drying process of the sludge.

[0044] The scheme is through the feeding mechanism 10 to pour the sludge needing drying treatment into the inside of the drying machine main body 1 for drying treatment, the feeding mechanism 10 includes the feeding pipe 1001 installed on one side of the drying machine main body 1, the outer wall of the feeding pipe 1001 is sleeved with the preheating pipe 1002, the preheating pipe 1002 is provided with the heat conduction cavity 1003 in the inside, wherein the sludge needing drying treatment is poured into the inside of the drying machine main body 1 through the feeding pipe 1001, in the process of introduction, the hot steam in the first heating cavity 7 enters into the inside of the heat conduction cavity 1003 through the bottom end of the preheating pipe 1002, the feeding pipe 1001 is wrapped by the heat conduction cavity 1003, so as to preheat the sludge in the feeding pipe 1001, in actual use, the use length of the feeding pipe 1001 and the preheating pipe 1002 can be increased according to the preheating degree.

[0045] In the process of sludge drying treatment, the heat conduction mechanism 11 inputs hot steam into the inside of the first heating cavity 7 and the second heating cavity 8 for heat conduction. The heat conduction mechanism 11 includes a joint 1102 installed at the top end of a heat conduction pipe 1101, a bottom end of a moving piston 1106 fixed with a limit stop 1107, a middle end of a partition plate 1103 provided with a constant pressure hole 1110, one side of a first gas outlet pipe 1108 and a second gas outlet pipe 1109 both installed with a constant pressure pipe 1111, and one side of the constant pressure pipe 1111 installed with a one-way valve 1112. In the process of use, the hot steam pipeline is connected with the joint 1102, and the hot steam is introduced into the inside of the heat conduction pipe 1101 through the hot steam pipeline. The hot steam is separated by the partition plate 1103 and is pressed downward to two groups of sealing plugs 1104 under the pressure of the gas, and is discharged into the inside of the first heating cavity 7 and the second heating cavity 8 through the first gas outlet pipe 1108 and the second gas outlet pipe 1109. When the pressures in the first heating cavity 7 and the second heating cavity 8 are different, the gas in the cavity with the larger pressure pushes up the moving piston 1106 on the opposite side through the cavity in the limit stop 1107, so that the pressure required for the steam injected into the upper end of the heat conduction pipe 1101 to press the sealing plug 1104 increases, and the gas presses the sealing plug 1104 at the other end, so that the pressure in the first heating cavity 7 and the second heating cavity 8 is balanced. At the same time, when the gas pressure increases, the pressure is discharged through the first gas outlet pipe 1108 or the second gas outlet pipe 1109 to the middle of the sealing plug 1104 and the moving piston 1106. At this time, the gas discharged into the middle of the sealing plug 1104 and the moving piston 1106 flows to the constant pressure pipe 1111 at the end with the smaller pressure through the constant pressure hole 1110, and then flows into the first gas outlet pipe 1108 or the second gas outlet pipe 1109 through the one-way valve 1112, so that the pressure is balanced. The pressure balance of the first heating cavity 7 and the second heating cavity 8 indicates that the heat conducted by the gas in the first heating cavity 7 and the second heating cavity 8 is the same, so that the temperature of the first heating cavity 7 and the second heating cavity 8 is uniform, and the sludge drying effect is not reduced due to temperature difference.

[0046] In order to avoid harmful substances in the steam generated in the wet sludge drying process, the steam generated in the sludge drying process is filtered and treated by the exhaust gas purification mechanism 12. The exhaust gas purification mechanism 12 includes an exhaust box 1201 installed at the top end of the drying machine main body 1. The top end of the exhaust box 1201 is connected with a gas guide pipe 1202. One end of the gas guide pipe 1202 is connected with a purification pipe 1203. The inside of the purification pipe 1203 is installed with a filter plate 1204. The top end of the filter plate 1204 is installed with a spray head 1206. The top end of the spray head 1206 is connected with a water receiving pipe 1205. The top end of the purification pipe 1203 is connected with a through pipe 1207. One end of the through pipe 1207 is installed with a gas pump 1208. One end of the gas pump 1208 is installed with a discharge pipe 1209. The bottom end of the purification pipe 1203 is connected with a drain pipe 1210. In the wet sludge drying process, the water in the wet sludge evaporates to generate steam. The steam enters the gas guide pipe 1202 through the exhaust box 1201, and then is guided into the inside of the purification pipe 1203 through the gas guide pipe 1202. By opening the gas pump 1208, the steam in the purification pipe 1203 is extracted upwards. During the extraction process, the steam first passes through the filter plate 1204 to filter out large particles in the steam. At the same time, by connecting the water receiving pipe 1205 with a water pipe, by injecting purified water into the water receiving pipe 1205, the water is atomized and sprayed out from the spray head 1206 through the water receiving pipe 1205, so that the small particle impurities in the steam are washed down by the atomized water. The purified steam is discharged along the through pipe 1207 through the discharge pipe 1209, so as to complete the purification and discharge of the steam generated in the sludge drying process.

[0047] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features. Such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A thin-layer sludge dryer for sludge treatment, comprising a dryer body (1), characterized in that: A first sealing cover (2) is installed at one end of the dryer body (1), and a second sealing cover (3) is installed at the end of the dryer body (1) away from the first sealing cover (2). A bottom plate (4) is provided at the bottom end of the dryer body (1), and a support frame (5) is fixed at the top of the bottom plate (4). A drive mechanism (6) is installed at one end of the dryer body (1). A first heating cavity (7) is opened inside the dryer body (1), and a second heating cavity (8) is opened next to the first heating cavity (7). A baffle plate (9) is installed between the first heating cavity (7) and the second heating cavity (8). A feeding mechanism (10) is installed on one side of the dryer body (1), a heat conduction mechanism (11) is installed at the top of the dryer body (1), a heat conduction pipe (1101) is installed at the top of the dryer body (1), a partition plate (1103) is installed inside the heat conduction pipe (1101), a sealing plug (1104) is installed at both ends of the partition plate (1103), a return spring (1105) is fixed at the bottom end of the sealing plug (1104), a moving piston (1106) is connected to the bottom end of the return spring (1105), and a limit stop (1107) is fixed at the bottom end of the moving piston (1106). One end of the heat pipe (1101) is equipped with a first vent pipe (1108), and the other end of the heat pipe (1101) away from the first vent pipe (1108) is equipped with a second vent pipe (1109). After the hot steam enters the heat pipe (1101), it will be separated by a partition plate (1103). Under the pressure of the gas, it will squeeze the two sets of sealing plugs (1104) downwards until it is discharged into the first heating cavity (7) and the second heating cavity (8) through the first vent pipe (1108) and the second vent pipe (1109). When the pressure inside the first heating cavity (7) and the second heating cavity (8) is different... At this time, the gas in the cavity with higher pressure will push the piston (1106) on the opposite side upward through the cavity inside the limit block (1107), thereby increasing the pressure required for the steam injected at the upper end of the heat pipe (1101) to squeeze the sealing plug (1104), and the gas will squeeze the sealing plug (1104) at the other end, thereby achieving pressure balance between the first heating cavity (7) and the second heating cavity (8). The top of the dryer body (1) is equipped with a purification exhaust mechanism (12), the bottom of the dryer body (1) is equipped with a discharge port (13), and the bottom of the dryer body (1) is equipped with a water outlet (14).

2. A thin-layer sludge dryer for sludge treatment according to claim 1, characterized in that: The drive mechanism (6) includes a drive motor (601) installed at one end of the dryer body (1), a reducer (602) is installed at one end of the drive motor (601), and a transmission shaft (603) is installed at one end of the reducer (602).

3. A thin-layer sludge dryer for sludge treatment according to claim 2, characterized in that: One end of the drive shaft (603) is connected to a rotor (605), a solid scraper (606) is installed on the outer wall of one end of the rotor (605), a pusher (607) is installed on the outer wall of the end of the rotor (605) away from the solid scraper (606), and a limit rod (608) is fixed to the end of the rotor (605) away from the drive shaft (603).

4. A thin-layer sludge dryer for sludge treatment according to claim 1, characterized in that: The first sealing cover (2) is equipped with a first bearing shaft seal (604) at one end, and the second sealing cover (3) is fixed with a second bearing shaft seal (609) at one end.

5. A thin-layer sludge dryer for sludge treatment according to claim 4, characterized in that: The feeding mechanism (10) includes a feeding pipe (1001) installed on one side of the dryer body (1). A preheating pipe (1002) is sleeved on the outer wall of the feeding pipe (1001), and a heat-conducting cavity (1003) is opened inside the preheating pipe (1002).

6. A thin-layer sludge dryer for sludge treatment according to claim 1, characterized in that: The heat conduction mechanism (11) includes a connector (1102) installed at the top of the heat conduction pipe (1101).

7. A thin-layer sludge dryer for sludge treatment according to claim 1, characterized in that: The partition plate (1103) has a constant pressure hole (1110) at the middle end. A constant pressure pipe (1111) is installed on one side of the first air outlet pipe (1108) and the second air outlet pipe (1109). A one-way valve (1112) is installed on one side of the constant pressure pipe (1111).

8. A thin-layer sludge dryer for sludge treatment according to claim 1, characterized in that: The purification and exhaust mechanism (12) includes an exhaust box (1201) installed at the top of the dryer body (1), the top of the exhaust box (1201) is connected to an air guide pipe (1202), and one end of the air guide pipe (1202) is connected to a purification pipe (1203).

9. A thin-layer sludge dryer for sludge treatment according to claim 8, characterized in that: The purification pipe (1203) is equipped with a filter plate (1204), and a spray head (1206) is installed at the top of the filter plate (1204). A water inlet pipe (1205) is connected to the top of the spray head (1206).

10. A thin-layer sludge dryer for sludge treatment according to claim 8, characterized in that: The top end of the purification pipe (1203) is connected to a through pipe (1207), one end of the through pipe (1207) is equipped with an air pump (1208), one end of the air pump (1208) is equipped with a discharge pipe (1209), and the bottom end of the purification pipe (1203) is connected to a drain pipe (1210).

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