Sludge drying equipment for sewage treatment

Abstract

The invention relates to the technical field of sludge treatment equipment, in particular to sludge drying equipment for sewage treatment, which comprises a drying box provided with a feed inlet and a conveyor belt arranged in the drying box, and the conveyor belt is used for conveying sludge; a blocking assembly is further arranged in the drying box and comprises a driving structure and a blocking piece, the driving structure is connected with one set of conveying rollers of the conveying belt, when the conveying belt acts, the driving structure can drive the blocking piece to act to open the feeding port, and when the conveying belt acts, the blocking piece can drive the feeding port to open the feeding port. A drying assembly arranged in the drying box can be used for drying the sludge on the conveying belt; the sludge drying device further comprises a loosening assembly, the loosening assembly is connected with the conveying rollers, and when the conveying belt acts, the loosening assembly can scatter sludge on the conveying belt, so that sludge drying is accelerated.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment equipment, in particular to sludge drying equipment for sewage treatment. Background Art

[0002] Sludge mainly comes from by-products generated during the treatment process of urban sewage treatment plants. Specifically, it is a complex of scum formed during sewage treatment and floccules, sediments and other components condensed in different ways. Its specific composition is related to the treatment process and the nature of sewage, which makes sludge a more difficult waste to treat, and the humidity of sludge from different batches and supply channels is often inconsistent. Sludge is made into environmentally friendly bricks after a series of treatments. It not only solves the problem of sludge discharge, but also meets the raw material supply demand for environmentally friendly bricks. In the process of making sludge into environmentally friendly bricks, sludge needs to be dried using drying equipment.

[0003] Sludge drying, also known as sludge dehydration, refers to the process of removing most of the water content from the sludge through infiltration or evaporation. The volume and water content of the sludge after drying will be reduced, which can facilitate subsequent treatment and resource utilization, and can also reduce transportation and processing costs. In addition, drying treatment can also effectively kill pathogens and harmful substances in the sludge and reduce environmental pollution.

[0004] Currently, commonly used sludge drying methods mainly include thermal drying, hydrothermal drying, mechanical pressing, steam drying and natural drying. The basic principle of thermal drying is to transfer heat energy to the sludge to evaporate water, thereby reducing the volume and water content of the sludge. During the operation, it is necessary to continuously provide heat energy to the sludge, which leads to the disadvantage of high energy consumption. In addition, during the actual operation, the interior of the accumulated sludge cannot be in direct contact with the heat energy, which will make the sludge unable to be dried evenly, resulting in poor sludge drying efficiency. Summary of the invention

[0005] The object of the present invention is to provide a sludge drying device for sewage treatment to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A sludge drying device for sewage treatment comprises: a drying box, wherein a feed port is arranged on the drying box, and a conveyor belt is arranged inside the drying box, wherein the conveyor belt is used to transport sludge;

[0008] The drying box is also provided with a blocking component, which includes a driving structure and a blocking member, and the driving structure is connected to one group of conveying rollers of the conveyor belt. When the conveyor belt moves, the driving structure can drive the blocking member to move to open the feed port, and when the conveyor belt moves, the drying component arranged in the drying box can dry the sludge on the conveyor belt;

[0009] It also includes a loosening component, which is connected to the transport roller. When the transport belt moves, the loosening component can disperse the sludge on the transport belt, thereby accelerating the drying of the sludge.

[0010] The sludge drying equipment for sewage treatment as described above: the sealing member includes a sealing plate, the sealing plate is connected to a slide rail fixedly arranged in the drying box, and the sealing plate is provided with an inclined groove on one side facing the conveyor belt, and a protruding column is slidably arranged in the inclined groove.

[0011] The sludge drying equipment for sewage treatment as described above: the driving structure includes a driving rod rotatably installed in the drying box, a sliding rod is fixedly arranged on the driving rod, and two groups of sliding rods are equidistantly arranged along the circumferential direction of the driving rod, and springs are slidably arranged on the two groups of sliding rods, one end of the spring abuts against the driving rod, and the other end abuts against a movable part sleeved on the sliding rod.

[0012] The sludge drying equipment for sewage treatment as described above: the moving part includes a sliding sleeve mounted on the sliding rod, a counterweight is fixedly provided on the sliding sleeve, and the sliding sleeve is connected to a driving part slidably arranged on the driving rod through a hinge rod.

[0013] The sludge drying equipment for sewage treatment as described above: the driving member includes a movable sleeve sleeved on the driving rod, a sleeve ring is sleeved on the movable sleeve, and the sleeve ring is fixedly connected to the protruding column through the movable rod.

[0014] The sludge drying equipment for sewage treatment as described above: the loosening component includes a first loosening structure and a second loosening structure, and the first loosening structure includes a first rake tooth fixedly arranged in the drying box.

[0015] The sludge drying equipment for sewage treatment as described above: the loosening assembly includes a first loosening structure and a second loosening structure, the first loosening structure includes a first rake fixedly arranged in the drying box

[0016] The second loosening structure includes a rotating rod installed in the drying box, the rotating rod is connected to the transport roller through a belt, and a second slide is sleeved on the rotating rod, a protrusion is formed on the inner wall of the second slide, and the protrusion is slidably arranged in a closed groove opened on the outer wall of the rotating rod, and the second slide is connected to a guide member arranged in the drying box, so that when the rotating rod moves, the second slide can slide along the axial direction of the rotating rod.

[0017] The sludge drying equipment for sewage treatment as described above: the guide member includes a fixed rod fixedly arranged in the drying box, a first slide cylinder is sleeved on the fixed rod, and a second rake tooth is fixedly arranged between the first slide cylinder and the second slide cylinder.

[0018] The sludge drying equipment for sewage treatment as described above: the drying component includes an air supply structure and a circulation structure, the air supply structure includes a fan arranged on the drying box, the fans are provided in multiple groups and are distributed on both sides of the drying box and are communicatively connected with the conveyor belt, and when the conveyor belt is in motion, the fans can blow hot air into the drying box.

[0019] The sludge drying equipment for sewage treatment as described above: the circulation structure includes a circulation pipe arranged on the drying box, the air outlet of the circulation pipe is in the same direction as the bottom of the conveyor belt, and a dryer is arranged on the circulation pipe.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By setting up a blocking component and utilizing the cooperation between the driving structure and the blocking plate, the blocking plate can cooperate with the movement of the conveyor belt to synchronously open or close the feed port, without the need to separately operate the feed port and the conveyor belt, thus simplifying the operation steps of the operator, providing convenience for the operator, and ensuring that the thickness of the sludge on the conveyor belt remains the same, thereby facilitating the drying of the sludge;

[0022] At the same time, by setting a drying component, the fan set on the drying box is used to continuously input hot air into the drying box to dry the sludge on the conveyor belt. During the drying process, the hot steam generated passes through the circulation pipe and is passed into the drying box again after drying treatment, which can heat the conveyor belt. The conveyor belt with increased temperature can dry the sludge. The whole process makes full use of the heat stored in the water vapor, realizes recycling, and then reduces energy consumption;

[0023] At the same time, by setting up a loosening component and utilizing the cooperation between the loosening component and the conveyor belt, the second rake teeth of the conveyor belt will move during the transportation process, leaving tooth marks on the sludge. These tooth marks can increase the contact area between the sludge and the hot air, and at the same time can turn the sludge on the lower layer to the upper layer so that it can contact the hot air, thereby accelerating the drying speed of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of sludge drying equipment for sewage treatment.

[0025] Figure 2 This is a schematic diagram of the structure of the other side of the sludge drying equipment for sewage treatment.

[0026] Figure 3 This is a schematic diagram of the structure inside the drying box of the sludge drying equipment for sewage treatment.

[0027] Figure 4 The present invention is a schematic diagram of the structure in which the sealing component and the loosening component are connected to the transport roller in the sludge drying equipment for sewage treatment.

[0028] Figure 5 This is a schematic diagram of the structure of the connection between the transport roller and the sealing component in the sludge drying equipment for sewage treatment.

[0029] Figure 6 This is a schematic diagram of the driving structure in the sludge drying equipment for sewage treatment.

[0030] Figure 7 This is a schematic diagram of the structure of the plugging parts in the sludge drying equipment for sewage treatment.

[0031] Figure 8 It is a structural schematic diagram of the connection between the transport roller and the second loose structure in the sludge drying equipment for sewage treatment.

[0032] Fig. 9 This is a schematic diagram of the structure of the second loose structure in the sludge drying equipment for sewage treatment.

[0033] In the figure: 1, drying box; 101, scraper; 102, inclined plate; 2, feed port; 3, circulation pipe; 301, dryer; 4, conveyor belt; 5, fan; 6, slide rail; 7, first rake tooth; 8, fixed rod; 9, rotating rod; 901, closed groove; 10, blocking plate; 1001, inclined groove; 1002, slider; 11, linkage rod; 12, bevel gear set; 13, transport roller; 14, receiving roller; 15, driving rod; 16, moving rod; 1601, protruding column; 1602, sleeve ring; 17, moving sleeve; 18, sliding rod; 19, spring; 20, counterweight; 21, sliding sleeve; 22, first slide; 23, second slide; 2301, protrusion; 24, second rake tooth; 25, hinged rod. DETAILED DESCRIPTION

[0034] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0035] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0036] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0037] See also Figure 1-Figure 9 In an embodiment of the present invention, a sludge drying device for sewage treatment includes:

[0038] A drying box 1, wherein a feed port 2 is provided on the drying box 1, and a conveyor belt 4 is provided inside the drying box 1, wherein the conveyor belt 4 is used to transport sludge;

[0039] Preferably, see Figure 3 , Figure 4 The two ends of the conveyor belt 4 are respectively connected to the conveyor rollers 13 rotatably installed in the drying box 1 and installed outside the drying box 1, so that one side of the conveyor belt 4 extends out of the drying box 1 and divides the drying box 1 into an upper chamber and a lower chamber, and an inclined plate 102 is fixedly arranged in the drying box 1, as shown in FIG. Figure 3 As shown, the arrangement of the inclined plate 102 can prevent the sludge lowered from the feed inlet 2 into the drying box 1 from falling to the left side of the feed inlet 2 and thus falling into the lower chamber;

[0040] In particular, the transport roller 13 near the feed port 2 is coaxially fixed with the output shaft of the motor fixedly arranged on the outside of the drying box 1, and a plurality of groups of receiving rollers 14 are equidistantly arranged between the two groups of transport rollers 13. The receiving rollers 14 can support the conveyor belt 4 so that the conveyor belt 4 will not collapse when transporting sludge.

[0041] The drying box 1 is also provided with a blocking component, which includes a driving structure and a blocking member. The driving structure is connected to one group of conveying rollers 13 of the conveyor belt 4. When the conveyor belt 4 moves, the driving structure can drive the blocking member to move to open the feed port 2. When the conveyor belt 4 moves, the drying component provided in the drying box 1 can dry the sludge on the conveyor belt 4.

[0042] The blocking member includes a blocking plate 10, which is connected to a slide rail 6 fixedly arranged in the drying box 1, and a slanted groove 1001 is formed on a side of the blocking plate 10 facing the conveyor belt 4, and a protruding column 1601 is slidably arranged in the slanted groove 1001;

[0043] Preferably, see Figure 3 , Figure 4 , Figure 7 A slider 1002 is fixedly provided on the side of the blocking plate 10 facing the conveyor belt 4. Two groups of sliders 1002 are symmetrically arranged along the width direction of the blocking plate 10. The two groups of sliders 1002 are slidably set in the slide rail 6 fixed in the drying box 1. With the cooperation of the slider 1002 and the slide rail 6, the blocking plate 10 can only slide along the width direction of the drying box 1, thereby blocking or opening the feed port 2.

[0044] The driving structure comprises a driving rod 15 rotatably mounted in the drying box 1, a sliding rod 18 is fixedly arranged on the driving rod 15, two groups of sliding rods 18 are equidistantly arranged along the circumferential direction of the driving rod 15, and springs 19 are slidably arranged on the two groups of sliding rods 18, one end of the spring 19 abuts against the driving rod 15, and the other end abuts against a moving member sleeved on the sliding rod 18;

[0045] For details, please refer to Figure 3 , Figure 4 , Figure 5 The driving rod 15 is connected to the linkage rod 11 rotatably installed in the drying box 1 through the bevel gear set 12. The bevel gear set 12 includes a first bevel gear and a second bevel gear. The first bevel gear is coaxially fixed with the linkage rod 11, and the second bevel gear is coaxially fixed with the driving rod 15. The linkage rod 11 is connected to a group of transport rollers 13 near the feed port 2 through a belt. After the motor is started, the transport rollers 13 rotate continuously clockwise (combined with Figure 3), at this time, under the action of the belt, the linkage rod 11 rotates synchronously clockwise with the transport roller 13, and then the first bevel gear and the second bevel gear enter into a meshing transmission state, which can drive the driving rod 15 to continuously rotate in the same direction. During the rotation, the two groups of moving parts are affected by the centrifugal force and can pull the driving parts close to the slide bar 18. During the approaching process, the blocking plate 10 can open the feed port 2, and then the sludge falls onto the conveyor belt 4. Along with the transportation of the conveyor belt 4, the sludge will be discharged from the right side of the drying box 1;

[0046] In particular, see Figure 1 , Figure 2 , Figure 3 A scraper 101 is fixedly arranged on the right side of the drying box 1, and the upper end of the scraper 101 contacts the bottom of the conveyor belt 4. When the conveyor belt 4 is working, the scraper 101 can scrape and clean the sludge adhering to the conveyor belt 4, thereby avoiding dust accumulation on the conveyor belt 4, facilitating the collection of the dried sludge, and reducing the workload of the motor.

[0047] The moving member includes a sliding sleeve 21 sleeved on the sliding rod 18, a counterweight 20 is fixedly arranged on the sliding sleeve 21, and the sliding sleeve 21 is connected to a driving member slidably arranged on the driving rod 15 through a hinge rod 25;

[0048] In particular, please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 , the spring 19 is always in a compressed state, and the spring 19 in the compressed state pushes the two sets of sliding sleeves 21 to approach each other. In combination with the above, when the conveyor belt 4 performs the transport operation, the driving rod 15 can continuously rotate clockwise. At this time, due to the setting of the counterweight block 20, the two sets of sliding sleeves 21 can quickly move away from each other and further squeeze the spring 19. At the same time, under the connection of the fixed-length hinged rod 25, the sliding sleeves 21 that move away from each other can pull the driving member toward the slide rod 18, thereby opening the feed port 2;

[0049] When the conveyor belt 4 stops rotating, the driving rod 15 can stop rotating synchronously. At this time, the spring 19 releases the elastic potential energy, which can push the two sets of sliding sleeves 21 closer to each other. At this time, under the connection of the fixed-length hinged rod 25, the sliding sleeves 21 closer to each other can push the driving member back to the initial state, and then close the feed port 2.

[0050] The above process enables the sealing plate 10 to cooperate with the conveyor belt 4 to open or close the feed port 2 without the need to perform separate distribution operations on the feed port 2 and the conveyor belt 4. While providing convenience for the operator, it can ensure that the thickness of the sludge on the conveyor belt 4 remains the same, thereby facilitating the drying of the sludge.

[0051] The driving member includes a moving sleeve 17 sleeved on the driving rod 15, and a sleeve ring 1602 is sleeved on the moving sleeve 17. The sleeve ring 1602 is fixedly connected to the protruding column 1601 through the moving rod 16;

[0052] For details, please refer to Figure 2 , Figure 5 , Figure 6 , Figure 7 In the initial state, the protruding column 1601 is located at the forming end of the inclined slot 1001 close to one end of the motor (combined with Figure 2 ), at this time, the blocking plate 10 is in a blocking state, and when the two sets of sliding sleeves 21 move away from each other, the movable sleeve 17 can move toward the slide bar 18. At this time, with the cooperation of the sleeve ring 1602 and the movable rod 16, the movable sleeve 17 can pull the protruding column 1601 to move toward the slide bar 18 synchronously. In this process, the contact and extrusion of the protruding column 1601 on the wall of the inclined groove 1001 can force the blocking plate 10 to move toward the motor along the length direction of the slide rail 6, thereby opening the feed port 2 so that the feed port 2 can discharge the material to the conveyor belt 4;

[0053] When the sliding sleeve 21 returns to the initial position, the movable sleeve 17 is driven by the sliding sleeve 21 to return to the initial position. During this process, the protruding column 1601 cooperates with the inclined groove 1001 to re-block the feed port 2.

[0054] For further information, see Figure 1 , Figure 2 , Figure 3 The drying assembly includes an air supply structure and a circulation structure. The air supply structure includes a fan 5 arranged on the drying box 1. The fan 5 is provided in multiple groups and distributed on both sides of the drying box 1. The fan 5 is communicatively connected with the conveyor belt 4. When the conveyor belt 4 moves, the fan 5 can blow hot air into the drying box 1.

[0055] The circulation structure includes a circulation pipe 3 arranged on the drying box 1, the air outlet of the circulation pipe 3 is in the same direction as the bottom of the conveyor belt 4, and a dryer 301 is arranged on the circulation pipe 3;

[0056] Preferably, three groups of the above-mentioned fans 5 are equidistantly arranged along the length direction of the drying box 1, and the three groups of fans 5 are connected to a heating device (not shown in the figure) outside the drying box 1. After the motor is started, the fans 5 can synchronously and continuously supply hot air to the drying box 1, so that the temperature in the drying box 1 is increased, thereby drying the sludge;

[0057] In particular, the conveyor belt 4 is made of a metal heat-conducting material. After the metal conveyor belt 4 absorbs heat, its temperature rises, and the sludge on the conveyor belt 4 can be dried at the same time, thereby accelerating the drying speed of the sludge. When the sludge is dried, the moisture inside the sludge will be evaporated into water vapor. The hot water vapor generated by the long-term drying operation accumulates in the drying box 1, floats in the upper chamber, and is finally discharged from the circulation pipe 3. The hot water vapor discharged into the circulation pipe 3 enters the lower chamber of the drying box 1 along the circulation pipe 3. During the flow, the dryer 301 can absorb the moisture in the hot water vapor, so that the hot air entering the drying box 1 is a dry hot air flow. During the entire drying process, the circulation pipe 3 can continuously transport hot air to the lower chamber. This hot air can continue to heat the conveyor belt 4 made of a metal heat-conducting material, thereby accelerating the drying speed of the sludge.

[0058] Under the effect of the above-mentioned circulation structure, the heat stored in the water vapor can be fully utilized and recycled, thereby increasing the drying speed and reducing energy consumption.

[0059] For further information, see Figure 3 , Figure 4 , Figure 8 , Fig. 9 The loose assembly includes a first loose structure and a second loose structure, and the first loose structure includes a first rake tooth 7 fixedly arranged in the drying box 1;

[0060] For details, please refer to Figure 3 The first rake teeth 7 are provided with two groups, such as Figure 3 As shown, it is placed in the drying box 1, and the lower end of the first rake tooth 7 is in contact with the surface of the conveyor belt 4. When the conveyor belt 4 rotates, the first rake tooth 7 fixed in the drying box 1 can leave tooth marks on the sludge, and these tooth marks can increase the contact area between the sludge and the hot air, so that the sludge can be dried quickly.

[0061] The second loosening structure includes a rotating rod 9 installed in the drying box 1, the rotating rod 9 is connected to the transport roller 13 through a belt, and a second slide 23 is sleeved on the rotating rod 9, a protrusion 2301 is formed on the inner wall of the second slide 23, and the protrusion 2301 is slidably arranged in a closed groove 901 provided on the outer wall of the rotating rod 9, and the second slide 23 is connected to a guide member provided in the drying box 1, so that when the rotating rod 9 moves, the second slide 23 can slide along the axial direction of the rotating rod 9;

[0062] The guide member includes a fixed rod 8 fixedly disposed in the drying box 1, a first slide cylinder 22 is sleeved on the fixed rod 8, and a second rake tooth 24 is fixedly disposed between the first slide cylinder 22 and the second slide cylinder 23;

[0063] For details, please refer to Fig. 9 The above-mentioned closed groove 901 is an annular groove. When the conveyor belt 4 rotates, the rotating rod 9 rotates synchronously with the conveyor roller 13 under the connection of the belt. During the rotation, the contact friction between the groove wall of the closed groove 901 and the protrusion 2301 can force the second slide 23 to slide back and forth along the axial direction of the fixed rod 8. During the sliding process, the second rake teeth 24 can loosen the sludge along the width direction of the conveyor belt 4. In this process, the sludge on the lower layer can be turned to the upper layer so that it can contact with the hot air, so that the sludge on the conveyor belt 4 can be quickly dried.

[0064] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0065] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sludge drying equipment for sewage treatment, characterized in that: include: A drying box (1), wherein a feed port (2) is provided on the drying box (1), and a conveyor belt (4) is provided inside the drying box (1), wherein the conveyor belt (4) is used to transport sludge; The drying box (1) is also provided with a blocking component, the blocking component comprising a driving structure and a blocking member, the driving structure being connected to a group of conveying rollers (13) of the conveying belt (4), and when the conveying belt (4) moves, the driving structure can drive the blocking member to move to open the feed port (2), and when the conveying belt (4) moves, the drying component provided in the drying box (1) can dry the sludge on the conveying belt (4); It also comprises a loosening component, which is connected to the transport roller (13). When the transport belt (4) moves, the loosening component can disperse the sludge on the transport belt (4), thereby accelerating the drying of the sludge.

2. A sludge drying equipment for sewage treatment according to claim 1, characterized in that: The blocking member comprises a blocking plate (10), the blocking plate (10) being connected to a slide rail (6) fixedly arranged in the drying box (1), and the blocking plate (10) being provided with an inclined groove (1001) on one side facing the conveyor belt (4), and a protruding column (1601) being slidably arranged in the inclined groove (1001).

3. A sludge drying equipment for sewage treatment according to claim 2, characterized in that: The driving structure comprises a driving rod (15) rotatably mounted in the drying box (1), a sliding rod (18) being fixedly arranged on the driving rod (15), two groups of sliding rods (18) being equidistantly arranged along the circumferential direction of the driving rod (15), springs (19) being slidably arranged on both groups of sliding rods (18), one end of the spring (19) being in contact with the driving rod (15), and the other end being in contact with a moving part sleeved on the sliding rod (18).

4. The sludge drying equipment for sewage treatment according to claim 3 is characterized in that: The moving member comprises a sliding sleeve (21) sleeved on the sliding rod (18), a counterweight (20) is fixedly arranged on the sliding sleeve (21), and the sliding sleeve (21) is connected to a driving member slidably arranged on the driving rod (15) through a hinge rod (25).

5. The sludge drying equipment for sewage treatment according to claim 4, characterized in that: The driving member comprises a movable sleeve (17) sleeved on the driving rod (15), a sleeve ring (1602) sleeved on the movable sleeve (17), and the sleeve ring (1602) is fixedly connected to the protruding column (1601) through the movable rod (16).

6. The sludge drying equipment for sewage treatment according to claim 2, characterized in that: The loosening assembly comprises a first loosening structure and a second loosening structure, wherein the first loosening structure comprises first rake teeth (7) fixedly arranged in the drying box (1).

7. The sludge drying equipment for sewage treatment according to claim 6, characterized in that: The second loosening structure comprises a rotating rod (9) installed in the drying box (1), the rotating rod (9) is connected to the transport roller (13) through a belt, and a second slide cylinder (23) is sleeved on the rotating rod (9), a protrusion (2301) is formed on the inner wall of the second slide cylinder (23), and the protrusion (2301) is slidably arranged in a closed groove (901) provided on the outer wall of the rotating rod (9), and the second slide cylinder (23) is connected to a guide member arranged in the drying box (1), so that when the rotating rod (9) moves, the second slide cylinder (23) can slide along the axial direction of the rotating rod (9).

8. The sludge drying equipment for sewage treatment according to claim 7, characterized in that: The guide member comprises a fixed rod (8) fixedly arranged in the drying box (1), a first slide cylinder (22) is sleeved on the fixed rod (8), and a second rake tooth (24) is fixedly arranged between the first slide cylinder (22) and the second slide cylinder (23).

9. The sludge drying equipment for sewage treatment according to claim 2, characterized in that: The drying component comprises an air supply structure and a circulation structure. The air supply structure comprises a fan (5) arranged on the drying box (1). The fan (5) is provided in multiple groups and is distributed on both sides of the drying box (1). The fan (5) is communicatively connected with the conveyor belt (4). When the conveyor belt (4) moves, the fan (5) can blow hot air into the drying box (1).

10. The sludge drying equipment for sewage treatment according to claim 9, characterized in that: The circulation structure comprises a circulation pipe (3) arranged on the drying box (1), the air outlet of the circulation pipe (3) is facing the bottom of the conveyor belt (4), and a dryer (301) is arranged on the circulation pipe (3).

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