Water-saving belt dewaterer

Abstract

The present application relates to water pollution control and management technical field, especially to a kind of water-saving belt dewaterer.It includes support frame, gravity dewatering module, wedge pre-pressing module and press dewatering module are installed on the support frame, feed pipe is installed on the gravity dewatering module, driver one and driver two are arranged on the support frame, filter belt one and filter belt two are slidably connected on the support frame, the filter belt one is provided with intercepting net, two flushing modules are installed on the support frame, the side of the support frame is fixedly connected with receiving tank.The sludge adhered to filter belt one is stirred by intercepting net, and the sludge adhered is moved, so that the sludge adhered to filter belt one falls, thereby reducing the residual amount of sludge on filter belt one, ensuring the cleanliness of filter belt one, improving the treatment effect of sludge, while reducing the working time of flushing module, thereby realizing the effect of water saving.

Description

Technical Field

[0001] This invention relates to the field of water pollution control and treatment technology, and in particular to a water-saving belt dewatering machine. Background Technology

[0002] Belt dewatering machines are continuous processing equipment that uses filter belts to mechanically squeeze and dewater materials. They are widely used in sludge dewatering and other fields. Their working principle is divided into three stages: gravity dewatering stage, wedge pre-compression stage, and high-pressure shearing stage. The sludge dewatering operation is completed through these three stages.

[0003] Research has found that after sludge dewatering, existing belt dewatering machines leave solids adhering to the filter belt. The more solids adhere to the filter belt, the lower its permeability, preventing water from being squeezed out of the sludge and reducing the efficiency of sludge dewatering. To avoid this problem, existing systems use high-pressure washing equipment to clean the filter belt. However, to ensure the normal use of the filter belt, the high-pressure washing equipment remains running, resulting in water waste. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a water-saving belt dewatering machine.

[0005] The technical solution of the present invention is: a water-saving belt dewatering machine, comprising a support frame, on which a gravity dewatering module, a wedge pre-compression module, and a pressing dewatering module are installed. A feed pipe is installed on the gravity dewatering module. A driver one and a driver two are provided on the support frame. A filter belt one and a filter belt two are slidably connected on the support frame. Filter belt one passes through the gravity dewatering module, the wedge pre-compression module, and the pressing dewatering module. Filter belt two passes through the wedge pre-compression module and the pressing dewatering module. Driver one and driver two drive filter belt one and filter belt two respectively. Filter belt one is equipped with an intercepting net. Two rinsing modules are installed on the support frame, and the two rinsing modules respectively rinse and clean filter belt one and filter belt two. A receiving box is fixedly connected to one side of the support frame.

[0006] Furthermore, two support rollers are rotatably connected to the side of the support frame near the receiving box. The support rollers are used to guide the intercepting net so that the intercepting net separates from the filter belt.

[0007] Furthermore, it also includes: Two pressing blocks are fixed to adjacent support rollers respectively. The pressing blocks are used to squeeze the interception net, causing the interception net to deform. Both pressing blocks are provided with protrusions, which are used to alternately squeeze the interception net.

[0008] Furthermore, the gravity dehydration module includes: A fixed frame is fixedly connected to the support frame. The fixed frame is fixedly connected to multiple support rods. The support rods are fixedly connected to guide blocks arranged in a linear array. Each guide block has two symmetrically distributed arc surfaces, and the centers of the circles containing the two arc surfaces on the same guide block are located on the opposite sides of the two arc surfaces.

[0009] Furthermore, from top to bottom, the area projected onto the horizontal plane of the guide block gradually increases.

[0010] Furthermore, all the guide blocks on two adjacent support rods are staggered.

[0011] Furthermore, it also includes: The number of fixed cylinders is the same as the number of support rods, and they are all fixedly connected to the fixed frame. The fixed cylinders and the support rods are distributed alternately. The fixed cylinders are fixedly connected to evenly distributed support shells, and the support shells are slidably connected to guide cylinders. The number of driving components is the same as the number of fixed cylinders, and they are all fixedly connected to the feed pipe. The telescopic end of the driving component is fixedly connected to a connecting rod, and the connecting rod is fixedly connected to all the guide cylinders on the adjacent fixed cylinder.

[0012] Furthermore, all the support shells on the same fixed cylinder and all the guide blocks on the adjacent support rods near the receiving box are staggered.

[0013] Furthermore, a flexible sleeve is fixedly attached to the lower side of the guide tube.

[0014] Furthermore, it also includes: An air supply component is installed on the fixed frame; There are several transition pipes, which are respectively fixed to the adjacent fixed cylinders. The transition pipes correspond one-to-one with the fixed cylinders. The transition pipes are connected to the air supply components through connecting pipes. The transition pipes are also connected to all the guide cylinders on the adjacent fixed cylinders.

[0015] The beneficial effects of this invention are: this invention uses an interception net to pick up the sludge adhering to the filter belt and move it along with the sludge, causing the sludge adhering to the filter belt to fall off, thereby reducing the amount of sludge residue on the filter belt, ensuring the cleanliness of the filter belt, improving the sludge treatment effect, and reducing the working time of the rinsing module, thereby achieving water saving.

[0016] This invention utilizes support rollers and pressing blocks to compress the interception net, facilitating the shedding of sludge adhering to it, ensuring the cleanliness of the interception net, reducing the operating frequency of the rinsing module, and maintaining the stability of the interception net by alternating compression from the protrusions on the two pressing blocks, ensuring that the tension of the interception net does not change.

[0017] This invention utilizes the two arc-shaped surfaces of the guide block to guide the sludge, achieving the effect of flipping the sludge located on the lower side to the upper side. This results in a uniform mixing of solids and liquids in the sludge, reducing the occurrence of stratified parallel flow of the sludge and thus reducing the probability of solids in the sludge settling onto the filter belt, thereby lowering the probability of filter belt clogging.

[0018] This invention achieves the function of suctioning and releasing sludge in the corresponding area of ​​the filter belt by the reciprocating movement of the guide tube and the operation of the air supply component, thereby forming a "blank area" on the filter belt to facilitate the discharge of liquid from the sludge. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the support frame of the present invention; Figure 3 This is a three-dimensional structural diagram of driver one and driver two of the present invention; Figure 4 This is a three-dimensional structural diagram of filter belt one and filter belt two of the present invention; Figure 5 This is a three-dimensional sectional view of the support roller and pressing block of the present invention; Figure 6 This is a three-dimensional structural diagram of the gravity dehydration module and feed pipe of the present invention; Figure 7 This is a three-dimensional structural diagram of the fixing frame and fixing cylinder of the present invention; Figure 8 This is a three-dimensional structural diagram of the support rod and guide block of the present invention; Figure 9 This is a three-dimensional structural diagram of the flow guide block of the present invention; Figure 10 This is a three-dimensional structural diagram of the fixed cylinder and flexible sleeve of the present invention; Figure 11 This is a three-dimensional structural diagram of the support shell and connecting rod of the present invention; Figure 12 This is a three-dimensional structural diagram of the driving component and connecting rod of the present invention; Figure 13 This is an exploded three-dimensional view of the support shell and guide tube of the present invention.

[0020] Component names and serial numbers in the diagram: 1-Support frame, 2-Gravity dewatering module, 21-Feed pipe, 3-Wedge pre-compression module, 4-Pressing dewatering module, 51-Driver 1, 52-Driver 2, 61-Filter belt 1, 62-Filter belt 2, 71-Interception net, 8-Washing module, 9-Collection box, 201-Support roller, 202-Pressing block, 301-Fixing frame, 302-Support rod, 303-Guide block, 401-Fixing cylinder, 402-Support shell, 403-Guide cylinder, 404-Driver, 405-Connecting rod, 501-Flexible sleeve, 601-Air supply component, 602-Transition pipe. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] Example 1 This embodiment discloses a water-saving belt dewatering machine, whose main function is to dewater sludge, and it also has a water-saving function in the process of sludge treatment. The specific structure is as follows: like Figures 1-4 As shown, the system includes a support frame 1, on which a gravity dewatering module 2, a wedge pre-compression module 3, and a pressing dewatering module 4 are mounted. A feed pipe 21 is installed on the gravity dewatering module 2, and the right side of the feed pipe 21 connects to an external sludge tank. The feed pipe 21 can directly discharge sludge onto the upper side of filter belt 61. The support frame 1 is equipped with a driver 51 and a driver 52. Filter belt 61 and filter belt 62 are slidably connected to the support frame 1. The size of the filter holes in both can be changed according to actual conditions. Filter belt 61 passes through the gravity dewatering module 2, the wedge pre-compression module 3, and the pressing dewatering module 4, and filter belt 62 passes through the wedge pre-compression module 3 and the pressing dewatering module 4. Drivers 51 and 52 drive filter belt 61 and filter belt 62 to move through friction. Both drivers 51 and 52 consist of multiple electric rollers. The electric roller of driver 51 is in contact with filter belt 61. The electric roller of the second driver 52 is in contact with the filter belt 62. A tensioning system can be installed on the support frame 1 to adjust the tension of the first filter belt 61 and the second filter belt 62 to ensure the stability of the dewatering process. The first filter belt 61 is equipped with an intercepting net 71. There is friction between the first filter belt 61 and the intercepting net 71, and the first filter belt 61 can drive the intercepting net 71 to move synchronously through friction. The filter holes of the intercepting net 71 are hexagonal, which makes the geometric structure of the intercepting net 71 more stable. Two rinsing modules 8 are installed on the support frame 1. This is an existing structure, and its internal composition will not be described in detail. The two rinsing modules 8 rinse and clean the first filter belt 61 and the second filter belt 62 respectively. A receiving box 9 is fixed to one side of the support frame 1 (the size of the receiving box 9 in the figure is only for illustration, and the specific opening area can be set according to the actual situation). A correction system can be installed on the support frame 1 to ensure the stability of the movement of the first filter belt 61 and the second filter belt 62.

[0023] In the above scheme, gravity dewatering module 2 is used to pre-treat the sludge (in this embodiment, it is an existing structure). The sludge is evenly distributed on filter belt 61 and intercepting net 71, and most of the water is removed by its own gravity, which initially reduces the fluidity of the sludge. Wedge pre-compression module 3 is used to perform secondary treatment on the sludge (it is an existing structure, and the figure is only a simple illustration, so it will not be described in detail here). After pre-treatment, the sludge falls between filter belt 61 and wedge pre-compression module 3. During this process, the sludge is gradually subjected to compression force to further remove water from the sludge. Press dewatering module 4 consists of several rows of electric rollers that are staggered vertically. All the electric rollers compress filter belt 61 and filter belt 62 to squeeze out the water from the sludge.

[0024] Both gravity dewatering module 2 and pressing dewatering module 4 are equipped with water collection shells on their lower sides (e.g., Figure 2 and Figure 3 The collection shell is equipped with a drain pipe.

[0025] like Figures 3-5 As shown, two support rollers 201 are rotatably connected on the side of the support frame 1 near the receiving box 9. The support rollers 201 are used to guide the interception net 71 so that the interception net 71 is separated from the filter belt 61 and the support rollers 201 are in contact with the interception net 71.

[0026] During the use of this device, an intercepting net 71 can also be installed at filter belt 62, and two support rollers 201 can be installed on the support frame 1 near filter belt 62 (e.g. Figure 4 ).

[0027] The specific operation of the water-saving belt dewatering machine in this embodiment is as follows: Preparation: The operator selects filter belt 61, filter belt 62, and interceptor net 71 with appropriate filter holes according to the size of the solid particles in the sludge being processed. Then, filter belt 61 is wound onto driver 51 and all the electric rollers of the pressing and dewatering module 4. Filter belt 62 is wound onto driver 52 and all the electric rollers of the pressing and dewatering module 4. After that, the operator winds the interceptor net 71 onto filter belt 61 and onto the two support rollers 201. At this time, the part of the interceptor net 71 near the support rollers 201 is not in contact with filter belt 61, and the part of the interceptor net 71 near driver 51 is in contact with filter belt 61. After the filter belt 61, filter belt 62, and interceptor net 71 are installed, driver 51 and driver 52 are turned on. Driver 51 drives filter belt 61 to rotate clockwise. Filter belt 61 drives the interceptor net 71 on it to rotate synchronously through friction. Driver 52 drives filter belt 62 to rotate counterclockwise.

[0028] Start processing: The operator transports the sludge from the external sludge tank to the upper part of the filter belt 61 through the feed pipe 21, so that the sludge comes into contact with the interception net 71. As the filter belt 61 moves, it drives the sludge on it to move to the left in sync until the sludge moves to the gravity dewatering module 2. The gravity dewatering module 2 diverts the flowing sludge and causes most of the water in the sludge to pass through the filter belt 61 under the action of gravity. After passing through the filter belt 61, most of the water falls into the collection shell.

[0029] After the sludge passes through the gravity dewatering module 2, it moves along the filter belt 61 and falls onto the filter belt 62. At this point, the filter belt 62 moves the sludge to the left. The sludge then passes through the wedge pre-compression module 3. During this process, the wedge pre-compression module 3 slowly squeezes the sludge to facilitate the discharge of water from its interior. After passing through the wedge pre-compression module 3, the filter belts 61 and 62 gradually approach each other and squeeze the sludge until it moves into the pressing dewatering module 4. Then, the electric rollers on the pressing dewatering module 4 squeeze the filter belts 61 and 62, causing the filter belts 61 and 62 to squeeze the sludge between them, thereby discharging the water from the sludge.

[0030] After the sludge passes through the pressing and dewatering module 4, the sludge completes the dewatering operation, the water inside is squeezed out and falls into another collection shell. Then, under the action of the electric rollers on the drive 1 51 and drive 2 52, the filter belt 1 61 and filter belt 2 62 separate, and the sludge between the filter belt 1 61 and filter belt 2 62 no longer bears the squeezing pressure. At this time, most of the sludge falls into the receiving box 9.

[0031] A small amount of sludge will still adhere to filter belts 61 and 62 between filter belt 1 and filter belt 2. At this time, as filter belt 1 and intercepting net 71 move synchronously, intercepting net 71 gradually approaches the support roller 201. Under the action of the support roller 201, intercepting net 71 gradually moves away from filter belt 1. During this process, intercepting net 71 picks up the sludge adhering to filter belt 1 and moves it with the adhering sludge, so that the adhering sludge loses contact with filter belt 1.

[0032] As the interception net 71 passes through the two support rollers 201, it will bend under the guidance of the support rollers 201. During this process, the interception net 71 will squeeze the sludge adhering to it through its own deformation, so that the sludge adhering to the interception net 71 can fall off.

[0033] After the intercepting net 71 passes through the two support rollers 201, the intercepting net 71 and the filter belt 61 are put into contact again. Then the filter belt 61 and the intercepting net 71 continue to move clockwise. The above operation is repeated to continue the dewatering treatment of the sludge.

[0034] During the sludge dewatering process, the operator periodically activates the flushing module 8. As the filter belt 61 and the interceptor net 71 pass through the flushing module 8, the flushing module 8 washes the filter belt 61 and the interceptor net 71. The interceptor net 71 separates from the filter belt 61, causing the sludge adhering to the filter belt 61 to fall off, thereby reducing the amount of sludge residue on the filter belt 61, ensuring the cleanliness of the filter belt 61, improving the sludge treatment effect, and reducing the working time of the flushing module 8, thus achieving water conservation.

[0035] After the batch of sludge has been processed, the operator shuts down drive 1 51, drive 2 52 and flushing module 8, and performs a complete cleaning of the device for future use.

[0036] Example 2 This embodiment discloses a water-saving belt dewatering machine. Based on Embodiment 1, this embodiment also has the function of squeezing the interception net 71 to further amplify its deformation.

[0037] like Figure 4 and Figure 5 As shown, it also includes: two pressing blocks 202, which are respectively fixed to adjacent support rollers 201. The pressing blocks 202 are used to squeeze the interception net 71, causing the interception net 71 to deform, so that the sludge adhering to it can fall off, ensuring the cleanliness of the interception net 71, reducing the working frequency of the flushing module 8, and thus further realizing the water-saving function. Both pressing blocks 202 are provided with protrusions, which are used to alternately squeeze the interception net 71. The protrusions of the two pressing blocks 202 alternately squeeze the interception net 71, constantly changing the position of the interception net 71 under pressure. At the same time, the alternating squeezing will not cause the tension of the interception net 71 to change, thus maintaining the stability of the interception net 71.

[0038] Example 3 This embodiment discloses a water-saving belt dewatering machine. Based on embodiment 1, this embodiment also has the function of turning over the sludge located at the gravity dewatering module 2 on the filter belt 61.

[0039] During the process of sludge passing through the gravity dewatering module, the guide blocks in the gravity dewatering module guide the sludge flow, causing the sludge to form multiple "strip" flow paths. However, after the sludge passes through the guide blocks, the sludge will experience laminar flow. At this time, the solids in the sludge will be deposited downwards due to gravity and adhere to the filter screen, causing the filter screen to become clogged, thereby reducing the efficiency of sludge drainage.

[0040] like Figures 6-9As shown, the gravity dewatering module 2 includes: a fixed frame 301, fixedly connected to the support frame 1; multiple support rods 302 fixedly connected to the fixed frame 301; the outlet of the feed pipe 21 is located on the left side of all the support rods 302; guide blocks 303 arranged in a linear array are fixedly connected to the support rods 302; the guide blocks 303 are used to divert the flowing sludge, with the sludge flowing between two adjacent guide blocks 303; and an arc-shaped guide plate (such as...) is provided on the left side of the fixed frame 301. Figure 7 The arc-shaped guide plate is used to intercept the sludge on the filter belt 61, ensuring that the height of the sludge passing through all guide blocks 303 remains consistent. The guide block 303 has two arc-shaped surfaces symmetrically distributed front and back, and the centers of the circles containing the two arc-shaped surfaces on the same guide block 303 are located on the opposite sides of the two arc-shaped surfaces. As the sludge passes through the arc-shaped surface, it first moves upward along the lower part of the arc-shaped surface, and then moves downward along the upper part of the arc-shaped surface. This achieves the effect of turning the sludge located on the lower side to the upper side. The sludge flow state is similar to the process of plowing soil. By turning over the smoothly flowing sludge, the solid sludge located on the lower side is guided upward, so that the solid and liquid in the sludge are uniformly mixed, reducing the occurrence of stratified parallel flow of sludge, thereby reducing the probability of solid sludge settling onto the filter belt 61, thus reducing the probability of filter belt 61 becoming clogged.

[0041] like Figure 9 As shown, from top to bottom, the projected area of ​​the guide block 303 on the horizontal plane gradually increases. This limitation ensures that the sludge is guided differently by the upper, middle, and lower parts of the guide block 303 as it passes through the sludge, and the guiding force gradually increases from top to bottom. This increases the degree of disorder in the sludge flow process and reduces the probability of solid sediment in the sludge clogging the filter belt 61. All the guide blocks 303 on the two adjacent support rods 302 are staggered. By guiding the sludge through different columns of guide blocks 303, the guide blocks 303 further divert the "strip-shaped" sludge, improving the mixing degree of solids and liquids in the sludge and further reducing the occurrence of stable stratification during the sludge flow process.

[0042] The specific working process of the belt dewatering machine disclosed in this embodiment is as follows: After the sludge enters the gravity dewatering module 2, when the sludge comes into contact with the first column of guide blocks 303, the sludge is divided into several "strips" and continues to move to the right. During this process, a "blank area" will be formed on the right side of the first column of guide blocks 303. The sludge content in the "blank area" is less than the sludge content between two adjacent guide blocks 303. During the movement of the sludge, the liquid inside will flow to the "blank area", so that the liquid flows downward through the filter belt 61 and into the collection shell below.

[0043] When the sludge comes into contact with the second column of guide blocks 303, the second column of guide blocks 303 performs a diversion operation on the sludge again, so that the sludge is separated again and the degree of mixing of liquid and solid within it is improved.

[0044] As the sludge passes through the guide block 303, the left side of the guide block 303 initially guides the sludge, causing it to flow to the front and rear sides of the corresponding guide block 303. At the same time, the arc-shaped surface of the guide block 303 guides the sludge again, causing it to tumble from bottom to top, so that the solids and liquids in the sludge are evenly dispersed.

[0045] Example 4 This embodiment discloses a water-saving belt dewatering machine. Based on embodiment 3, this embodiment also has the function of guiding and diverting the sludge located at the gravity dewatering module 2 on the filter belt 61.

[0046] like Figure 7 , Figure 8 and Figures 10-13 As shown, it also includes: fixed cylinders 401, the number of which is the same as the number of support rods 302, all fixedly connected to the fixed frame 301. The fixed cylinders 401 and support rods 302 are staggered. The fixed cylinders 401 are fixedly connected to evenly distributed support shells 402. The support shells 402 are slidably connected to guide cylinders 403, which are used to guide the sludge; driving components 404, the number of which is the same as the number of fixed cylinders 401, are all fixedly connected to the feed pipe 21. The telescopic end of the driving component 404 is fixedly connected to a connecting rod 405. The driving component 404 is an electric push rod. The figure is only for illustration. In this embodiment, the telescopic end of the driving component 404 performs reciprocating rapid operation, that is, rapid extension and retraction. The connecting rod 405 is fixedly connected to all the guide cylinders 403 on the adjacent fixed cylinders 401; all the support shells 402 on the same fixed cylinder 401 and all the guide blocks 303 on the adjacent support rod 302 on its left are staggered (e.g., Figure 8 The guide tube 403 intermittently diverts the corresponding "strip-shaped" sludge to improve the sludge dispersal effect. After the telescopic end of the drive component 404 is fully extended, the adjacent guide tube 403 does not contact the filter belt 61.

[0047] like Figures 10-13 As shown, a flexible sleeve 501 is fixedly connected to the lower side of the guide tube 403. When the telescopic end of the drive component 404 is fully extended, the flexible sleeve 501 contacts the filter belt 61. The flexible sleeve 501 is made of corrosion-resistant rubber.

[0048] The specific working process of the belt dewatering machine disclosed in this embodiment is as follows: During sludge dewatering, the operator activates all drive components 404. The telescopic ends of drive components 404 begin to reciprocate, extending and retracting. As the telescopic ends of drive components 404 extend, they drive connecting rods 405 downwards. Connecting rods 405 then drive all guide tubes 403 on them downwards. Guide tubes 403 drive flexible sleeves 501 on them downwards until the telescopic ends of drive components 404 reach their limit position. At this point, flexible sleeves 501 contact filter belt 61, and the lower side of guide tubes 403 contacts the sludge. Both flexible sleeves 501 and guide tubes 403 guide the sludge, further dispersing it and increasing the degree of solid-liquid mixing in the sludge, thereby reducing the probability of solid deposition.

[0049] When the telescopic end of the drive component 404 retracts, the guide tube 403 moves upward and gradually loses contact with the sludge, and the flexible sleeve 501 loses contact with the filter belt 61, thus losing its guiding function for the sludge, causing the sludge to continue moving to the right and contact the guide block 303 on the right side.

[0050] Example 5 This embodiment discloses a water-saving belt dewatering machine. Based on embodiment 4, this embodiment also has the function of sucking and releasing sludge located at the gravity dewatering module 2 on the filter belt 61.

[0051] like Figures 10-13 As shown, it also includes: an air supply component 601, which is installed on the fixed frame 301 and is an existing air pump; and several transition pipes 602, which are respectively fixed to adjacent fixed cylinders 401. The transition pipes 602 correspond one-to-one with the fixed cylinders 401. The transition pipes 602 are connected to the air supply component 601 through a connecting pipe. The transition pipes 602 are connected to all the guide cylinders 403 on the adjacent fixed cylinders 401.

[0052] This embodiment follows the process of embodiment 4, as follows: When the flexible sleeve 501 contacts the filter belt 61 (the telescopic end of the drive component 404 is fully extended), the sludge on the filter belt 61 corresponding to the flexible sleeve 501 and the guide cylinder 403 is isolated into the flexible sleeve 501 and the guide cylinder 403. The air supply component 601 immediately starts to pump air. The air supply component 601 creates a negative pressure environment in all the guide cylinders 403 through the transition pipe 602. At the same time, the guide cylinders 403 suck up the sludge in the flexible sleeve 501 and the guide cylinder 403 under the action of negative pressure, causing the sludge in both to move upward. This completes the sludge suction work. During this process, the sucked sludge is always located in the guide cylinder 403.

[0053] After the sludge suction is completed, the telescopic end of the drive component 404 retracts and resets. At this time, the guide tube 403 carries the sludge inside it and moves upward. A "blank area" is formed on the filter belt 61 corresponding to the guide tube 403. Water in the sludge on the filter belt 61 corresponding to the guide tube 403 can flow downward through the "blank area" and pass through the filter belt 61.

[0054] After the telescopic end of the drive component 404 retracts and resets, the air supply component 601 immediately begins to supply air. The air supply component 601 pumps gas into all the guide cylinders 403 through the transition pipe 602, forcing the temporarily stored sludge in the guide cylinders 403 to be discharged to the surface of the filter belt 61. This operation is repeated so that the filter belt 61 forms a "blank area" multiple times, which facilitates the discharge of liquid in the sludge and thus improves the efficiency of sludge dewatering.

[0055] During the contact process between the flexible sleeve 501 and the filter belt 61, the flexible sleeve 501 will be tilted because the filter belt 61 is always in a moving state. This ensures the sealing between the flexible sleeve 501 and the filter belt 61, while reducing the friction between the two and reducing the wear of the filter belt 61.

[0056] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. A water-saving belt dewatering machine, characterized in that, The system includes a support frame (1), on which a gravity dewatering module (2), a wedge pre-compression module (3), and a pressing dewatering module (4) are mounted. A feed pipe (21) is mounted on the gravity dewatering module (2). A driver (51) and a driver (52) are mounted on the support frame (1). A filter belt (61) and a filter belt (62) are slidably connected on the support frame (1). The filter belt (61) passes through the gravity dewatering module (2), the wedge pre-compression module (3), and the pressing dewatering module (4). The filter belt 2 (62) passes through the wedge pre-compression module (3) and the pressing and dewatering module (4), and the driver 1 (51) and the driver 2 (52) drive the filter belt 1 (61) and the filter belt 2 (62) respectively. The filter belt 1 (61) is provided with an intercepting net (71). Two rinsing modules (8) are installed on the support frame (1). The two rinsing modules (8) rinse and clean the filter belt 1 (61) and the filter belt 2 (62) respectively. A receiving box (9) is fixed to one side of the support frame (1). The gravity dehydration module (2) includes: A fixed frame (301) is fixed to the support frame (1). The fixed frame (301) is fixed with a plurality of support rods (302). The support rods (302) are fixed with a linear array of guide blocks (303). The guide blocks (303) are provided with two symmetrically distributed arc surfaces, and the center of the circle of the two arc surfaces on the same guide block (303) is located on the opposite side of the two arc surfaces. It also includes: The number of fixed cylinders (401) is the same as the number of support rods (302), and they are all fixed in the fixed frame (301). The fixed cylinders (401) and the support rods (302) are staggered. The fixed cylinders (401) are fixed with evenly distributed support shells (402), and the support shells (402) are slidably connected to the guide cylinders (403). The number of driving components (404) is the same as the number of fixed cylinders (401), and they are all fixed to the feed pipe (21). The telescopic end of the driving component (404) is fixed to a connecting rod (405), and the connecting rod (405) is fixed to all the guide cylinders (403) on the adjacent fixed cylinder (401). A flexible sleeve (501) is fixedly connected to the lower side of the guide tube (403). It also includes: An air supply unit (601) is installed on the fixed frame (301); There are several transition pipes (602), which are respectively fixed to the adjacent fixed cylinders (401). The transition pipes (602) correspond one-to-one with the fixed cylinders (401). The transition pipes (602) are connected to the air supply component (601) through the connecting pipe. The transition pipes (602) are connected to all the guide cylinders (403) on the adjacent fixed cylinders (401). When the flexible sleeve (501) comes into contact with the filter belt (61), the sludge on the filter belt (61) corresponding to the flexible sleeve (501) and the guide tube (403) is isolated into the flexible sleeve (501) and the guide tube (403). The air supply component (601) immediately starts to pump air. The air supply component (601) creates a negative pressure environment in all the guide tubes (403) through the transition pipe (602). At the same time, the guide tubes (403) suck up the sludge in the flexible sleeve (501) and the guide tubes (403) under the action of negative pressure. After the telescopic end of the drive unit (404) retracts and resets, the air supply unit (601) immediately starts to supply air. The air supply unit (601) pumps gas into all the guide tubes (403) through the transition pipe (602), forcing the temporarily stored sludge in the guide tubes (403) to be discharged to the surface of the filter belt (61).

2. The water-saving belt dewatering machine according to claim 1, characterized in that, Two support rollers (201) are rotatably connected on the side of the support frame (1) near the receiving box (9). The support rollers (201) are used to guide the interception net (71) so that the interception net (71) is separated from the filter belt (61).

3. A water-saving belt dewatering machine according to claim 2, characterized in that, It also includes: Two pressing blocks (202) are respectively fixed to the adjacent support rollers (201). The pressing blocks (202) are used to squeeze the interception net (71) to deform the interception net (71). Both pressing blocks (202) are provided with protrusions, which are used to alternately squeeze the interception net (71).

4. A water-saving belt dewatering machine according to claim 3, characterized in that, From top to bottom, the area projected onto the horizontal plane of the guide block (303) gradually increases.

5. A water-saving belt dewatering machine according to claim 4, characterized in that, All the guide blocks (303) on two adjacent support rods (302) are staggered.

6. A water-saving belt dewatering machine according to claim 5, characterized in that, All the support shells (402) on the same fixed cylinder (401) are staggered with all the guide blocks (303) on the adjacent support rod (302) on the side near the receiving box (9).

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