Water-saving belt type dehydrator

Abstract

The invention relates to the technical field of water pollution control and treatment, in particular to a water-saving belt type dehydrator. Comprising a supporting frame, a gravity dehydration module, a wedge-shaped pre-pressing module and a squeezing dehydration module are installed on the supporting frame, a feeding pipe is installed on the gravity dehydration module, a first driver and a second driver are arranged on the supporting frame, a first filter belt and a second filter belt are connected to the supporting frame in a sliding mode, the first filter belt is provided with an intercepting net, and the second filter belt is provided with a second filter belt. Two washing modules are installed on the supporting frame, and a material collecting box is fixedly connected to one side of the supporting frame. Sludge attached to the first filter belt is picked through the intercepting net and carried to move, so that the sludge attached to the first filter belt falls off, the residual quantity of the sludge on the first filter belt is reduced, the cleanliness of the first filter belt is guaranteed, the sludge treatment effect is improved, meanwhile, the working time of the flushing module is shortened, and the working efficiency of the flushing module is improved. Therefore, the water-saving effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of water pollution control and treatment, in particular to a water-saving belt dehydrator. Background Art

[0002] Belt dewatering machine is a continuous processing equipment that uses filter belt to mechanically squeeze and dehydrate materials. It is widely used in fields such as sludge dewatering. Its specific working principle is divided into three stages: gravity dewatering stage, wedge pre-loading stage and high-pressure shearing stage. The sludge dewatering operation is completed through the above three stages.

[0003] Research has found that after the existing belt dewatering machine completes dehydration of the sludge, the dehydrated solids will adhere to the filter belt. If the more solids adhere to the filter belt, the water permeability of the filter belt will decrease, resulting in the inability to squeeze out the water in the sludge, causing the sludge dewatering operation efficiency to decrease. To avoid this problem, the filter belt is currently flushed with high-pressure flushing equipment. During this process, in order to ensure the normal use of the filter belt, the high-pressure flushing equipment will always be in the on state, which will cause a waste of water resources. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a water-saving belt dehydrator.

[0005] The technical solution of the present invention is: a water-saving belt dewatering machine, comprising a support frame, a gravity dewatering module, a wedge-shaped pre-pressing module and a squeezing dewatering module are installed on the support frame, a feeding pipe is installed on the gravity dewatering module, a driver 1 and a driver 2 are provided on the support frame, a filter belt 1 and a filter belt 2 are slidably connected to the support frame, the filter belt 1 passes through the gravity dewatering module, the wedge-shaped pre-pressing module and the squeezing dewatering module, the filter belt 2 passes through the wedge-shaped pre-pressing module and the squeezing dewatering module, and the driver 1 and the driver 2 respectively drive the filter belt 1 and the filter belt 2, the filter belt 1 is provided with an interception net, two flushing modules are installed on the support frame, the two flushing modules respectively flush and clean the filter belt 1 and the filter belt 2, and a material receiving box is fixedly connected to one side of the support frame.

[0006] Furthermore, two support rollers are rotatably connected to one side of the support frame close to the material receiving box, and the support rollers are used to guide the interception net to separate the interception net from the filter belt.

[0007] Furthermore, it also includes: Two pressing blocks are respectively fixed on adjacent supporting rollers. The pressing blocks are used to squeeze the interception net to deform the interception net. Both pressing blocks are provided with a protrusion, which is used to alternately squeeze the interception net.

[0008] Furthermore, the gravity dehydration module includes: A fixed frame is fixed to the support frame, and the fixed frame is fixed with multiple support rods, and the support rods are fixed with guide blocks distributed in a linear array. The guide blocks are provided with two symmetrically distributed arc surfaces, and the center of the circle where the two arc surfaces on the same guide block are located is located on the back side of the two arc surfaces.

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

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

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

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

[0013] Furthermore, a flexible sleeve is fixedly connected 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 on the adjacent fixed cylinders. The transition pipes correspond to the fixed cylinders one by one. The transition pipes are connected with the air supply parts through connecting pipes. The transition pipes are connected with all the guide cylinders on the adjacent fixed cylinders.

[0015] The beneficial effects of the present invention are as follows: the present invention uses an intercepting net to provoke the sludge adhered to the filter belt 1, and moves with the adhered sludge, so that the sludge adhered to the filter belt 1 falls off, thereby reducing the residual amount of sludge on the filter belt 1, ensuring the cleanliness of the filter belt 1, improving the sludge treatment effect, and at the same time reducing the working time of the flushing module, thereby achieving the effect of saving water.

[0016] The present invention utilizes support rollers and pressing blocks to squeeze the intercepting net, so as to facilitate the falling of sludge adhered thereto, ensure the cleanliness of the intercepting net, reduce the working frequency of the flushing module, and alternately squeeze the protrusions on the two pressing blocks so that the tension of the intercepting net does not change, thereby maintaining the stability of the intercepting net.

[0017] The present invention utilizes the two arc-shaped surfaces of the guide block to guide the sludge, thereby achieving the effect of flipping the sludge on the lower side to the upper side, thereby uniformly mixing the 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 sinking onto the filter belt, thereby reducing the probability of the filter belt being blocked.

[0018] The present invention realizes the function of sucking and releasing the sludge in the corresponding area on the filter belt by the up and down reciprocating movement of the guide cylinder and the operation of the air supply member, thereby forming a "blank area" on the filter belt to facilitate the discharge of liquid in the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] The names and serial numbers of the parts in the figure are: 1-support frame, 2-gravity dehydration module, 21-feed pipe, 3-wedge pre-pressing module, 4-pressing dehydration module, 51-driver one, 52-driver two, 61-filter belt one, 62-filter belt two, 71-interception net, 8-flushing module, 9-material receiving box, 201-support roller, 202-pressing block, 301-fixed frame, 302-support rod, 303-guide block, 401-fixed cylinder, 402-support shell, 403-guide cylinder, 404-drive member, 405-connecting rod, 501-flexible sleeve, 601-air supply member, 602-transition pipe. DETAILED DESCRIPTION

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

[0022] Example 1 This embodiment discloses a water-saving belt dehydrator, which mainly functions to dehydrate sludge and also has the function of saving water during the sludge treatment process. The specific structure is as follows: like Figures 1-4 As shown, it includes a support frame 1, on which a gravity dehydration module 2, a wedge-shaped pre-pressing module 3 and a squeezing dehydration module 4 are installed, a feed pipe 21 is installed on the gravity dehydration module 2, and the right side of the feed pipe 21 is connected to the external sludge tank, and the feed pipe 21 can discharge the sludge directly to the upper side of the filter belt 1 61, and a driver 1 51 and a driver 2 52 are provided on the support frame 1, and a filter belt 1 61 and a filter belt 2 62 are slidably connected on the support frame 1, and the filter hole sizes of the two can be changed according to actual conditions, the filter belt 1 61 passes through the gravity dehydration module 2, the wedge-shaped pre-pressing module 3 and the squeezing dehydration module 4, and the filter belt 2 62 passes through the wedge-shaped pre-pressing module 3 and the squeezing dehydration module 4, and the driver 1 51 and the driver 2 52 respectively drive the filter belt 1 61 and the filter belt 2 62 to move by friction, and the driver 1 51 and the driver 2 52 are both composed of a plurality of electric rollers, and the electric roller of the driver 1 51 is in contact with the filter belt 1 61, The electric roller of driver 2 52 is in contact with filter belt 2 62, and a tensioning system may be provided on the support frame 1 for adjusting the tension of filter belt 1 61 and filter belt 2 62 to ensure the stability of the dehydration process. Filter belt 1 61 is provided with an interception net 71. There is friction between filter belt 1 61 and interception net 71, and filter belt 1 61 can drive interception net 71 to move synchronously through friction. The filter holes of interception net 71 are hexagonal, which makes the geometric structure of interception net 71 more stable. Two flushing modules 8 are installed on the support frame 1. They are existing structures, and the internal composition will not be introduced in detail. The two flushing modules 8 flush and clean filter belt 1 61 and filter belt 2 62 respectively. A material collecting box 9 is fixed to one side of the support frame 1 (the size of the material collecting box 9 in the figure is only for reference, and the specific opening area can be set according to actual conditions). A correction system may be provided on the support frame 1 to ensure the stability of the movement of filter belt 1 61 and filter belt 2 62.

[0023] In the above scheme, the gravity dehydration module 2 is used to pre-treat the sludge (in this embodiment, it is the existing structure). The sludge is evenly distributed on the filter belt 1 61 and the interception net 71. Most of the water is removed by relying on its own gravity to initially reduce the fluidity of the sludge. The wedge-shaped pre-pressing module 3 is used to perform secondary treatment on the sludge (it is the existing structure, which is only a simple diagram in the figure and will not be described in detail here). The pre-treated sludge falls between the filter belt 1 61 and the wedge-shaped pre-pressing module 3. During this process, extrusion pressure is gradually applied to the sludge to further remove water from the sludge. The squeezing and dehydration module 4 is composed of two rows of electric rollers that are staggered up and down. The filter belt 1 61 and the filter belt 2 62 are squeezed by all the electric rollers to squeeze out the water in the sludge.

[0024] The lower sides of the gravity dehydration module 2 and the pressing dehydration module 4 are both provided with a collection shell (such as Figure 2 and Figure 3 ), a drain pipe is provided on the collecting shell.

[0025] like Figure 3-Figure 5 As shown, two support rollers 201 are rotatably connected to one side of the support frame 1 close to the material 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 the device, an interception net 71 can also be provided at the filter belt 2 62, and two support rollers 201 (such as Figure 4 ).

[0027] The specific operation of the water-saving belt dehydrator in this embodiment is as follows: Preparation: The operator selects filter belt 1 61, filter belt 2 62 and interception net 71 with appropriate filter holes according to the size of solid particles in the sludge to be treated, and then winds filter belt 1 61 around driver 1 51 and all electric rollers of the squeezing and dehydration module 4, and winds filter belt 2 62 around driver 2 52 and all electric rollers on the squeezing and dehydration module 4. Then the operator winds interception net 71 around filter belt 1 61 and wraps interception net 71 around two support rollers 201. At this time, the part of interception net 71 close to support roller 201 is not in contact with filter belt 1 61, and the part of interception net 71 close to driver 1 51 is in contact with filter belt 1 61. After the filter belt 1 61, filter belt 2 62 and interception net 71 are installed, driver 1 51 and driver 2 52 are turned on. Driver 1 51 drives filter belt 1 61 to rotate clockwise, and filter belt 1 61 drives the interception net 71 on it to rotate synchronously through friction, and driver 2 52 drives filter belt 2 62 to rotate counterclockwise.

[0028] Start processing: The operator transports the sludge in the external sludge tank to the upper part of the filter belt 61 through the feed pipe 21, so that the sludge contacts the interception net 71. During the movement of the filter belt 61, the filter belt 61 drives the sludge thereon to move synchronously to the left until the sludge moves to the gravity dehydration module 2. The gravity dehydration module 2 diverts the flowing sludge and allows most of the water in the sludge to pass through the filter belt 61 under the action of gravity. Most of the water falls into the collection shell after passing through the filter belt 61.

[0029] After the sludge passes through the gravity dewatering module 2, the sludge moves with the filter belt 1 61 and falls onto the filter belt 2 62. At this time, the filter belt 2 62 drives the sludge to move to the left, and then the sludge passes through the wedge-shaped pre-pressing module 3. During this process, the wedge-shaped pre-pressing module 3 slowly squeezes the sludge to further facilitate the discharge of water inside it. After passing through the wedge-shaped pre-pressing module 3, the filter belt 1 61 and the filter belt 2 62 gradually approach and squeeze the sludge until the sludge moves into the squeezing and dewatering module 4. The filter belt 1 61 and the filter belt 2 62 are squeezed by several electric rollers on the squeezing and dewatering modules 4, so that the filter belt 1 61 and the filter belt 2 62 squeeze the sludge between them, thereby discharging the water in the sludge.

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

[0031] A small amount of sludge between filter belt 1 61 and filter belt 2 62 will still adhere to filter belt 1 61 and filter belt 2 62. At this time, as filter belt 1 61 and interception net 71 move synchronously, interception net 71 gradually approaches support roller 201. At this time, under the action of support roller 201, interception net 71 gradually moves away from filter belt 1 61. During this process, interception net 71 stirs the sludge adhered to filter belt 1 61 and moves with the adhered sludge, causing the adhered sludge to lose contact with filter belt 1 61.

[0032] When the interception net 71 passes through the two support rollers 201, the interception net 71 will bend under the guidance of the support rollers 201. During this process, the interception net 71 squeezes the sludge adhered thereto through its own deformation, making it easier for the sludge adhered to the interception net 71 to fall off.

[0033] After the interception net 71 passes through the two support rollers 201, the interception net 71 and the filter belt 61 are again attached, and then the filter belt 61 and the interception net 71 continue to move clockwise, and the filter belt 61 and the interception net 71 repeat the above operation again to continue dehydrating the sludge.

[0034] During the dehydration process of the sludge, the operator regularly turns on the flushing module 8. When the filter belt 61 and the intercepting net 71 pass through the flushing module 8 above, the flushing module 8 flushes the filter belt 61 and the intercepting net 71 passing through the filter belt 61, and separates the intercepting net 71 from the filter belt 61, so that the sludge adhering to the filter belt 61 falls off, thereby reducing the residual amount of sludge 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, thereby achieving the effect of saving water.

[0035] After the treatment of the batch of sludge is completed, the operator turns off the driver 1 51, the driver 2 52 and the flushing module 8, and cleans the entire device for the next use.

[0036] Example 2 This embodiment discloses a water-saving belt dehydrator. Based on the first embodiment, this embodiment further has the function of squeezing the intercepting 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, and the pressing blocks 202 are used to squeeze the interception net 71 to deform the interception net 71 to facilitate the falling of sludge adhered thereto, thereby ensuring the cleanliness of the interception net 71 and reducing the working frequency of the flushing module 8, thereby further realizing the water-saving function. The two pressing blocks 202 are both provided with a protrusion, which is used to alternately squeeze the interception net 71. The protrusions of the two pressing blocks 202 squeeze the interception net 71 in turn, constantly changing the compressed position of the interception net 71, and at the same time, the alternating squeezing will not change the tension of the interception net 71, thereby maintaining the stability of the interception net 71.

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

[0039] When the sludge passes through the gravity dewatering module, the guide blocks in the module will guide the sludge machine, so that the sludge forms multiple "strip-shaped" flow routes. However, after the sludge passes through the guide blocks, the sludge will undergo laminar flow. At this time, the solids in the sludge will settle downward due to the action of gravity and adhere to the filter screen, causing the filter screen to be blocked, thereby reducing the efficiency of sludge drainage.

[0040] like Figure 6-Figure 9As shown, the gravity dehydration module 2 includes: a fixed frame 301, fixed to the support frame 1, a plurality of support rods 302 fixed to the fixed frame 301, the discharge port of the feed pipe 21 is located on the left side of all the support rods 302, the support rods 302 are fixed with guide blocks 303 distributed in a linear array, the guide blocks 303 are used to divert the flowing sludge, and the sludge flows between two adjacent guide blocks 303. An arc-shaped guide plate (such as Figure 7 ), the arc-shaped guide plate is used to intercept the sludge on the filter belt 61, so that the height of the sludge passing through all the guide blocks 303 is kept consistent. The guide block 303 is provided with two arc-shaped surfaces symmetrically distributed front and back, and the center of the circle where the two arc-shaped surfaces on the same guide block 303 are located is located on the back side of the two arc-shaped surfaces. In the process of the sludge passing through the arc-shaped surface, the sludge will first move upward along the lower part of the arc-shaped surface, and then move downward along the upper part of the arc-shaped surface, thereby achieving the effect of flipping the sludge on the lower side to the upper side. The sludge flow state is similar to the process of plowing the soil. By turning over the smoothly flowing sludge, the sludge solids on the lower side are guided upward, so that the solids and liquid in the sludge are evenly mixed, and the occurrence of stratified parallel flow of the sludge is reduced, thereby reducing the probability of solids in the sludge sinking to the filter belt 61, thereby reducing the probability of blockage of the filter belt 61.

[0041] like Figure 9 As shown, the projected area of ​​the guide block 303 on the horizontal plane gradually increases from top to bottom. Through the limitation here, when the sludge passes through the guide block 303, the upper, middle and lower parts of the guide block 303 have different tendencies in guiding the sludge, and the force of guiding the sludge gradually increases from top to bottom, thereby increasing the degree of chaos in the sludge flow process and reducing the probability of solid precipitation in the sludge clogging the filter belt 61; all the guide blocks 303 on two adjacent support rods 302 are staggered, and the sludge is guided by the guide blocks 303 in different columns, so that the guide blocks 303 divert the "strip-shaped" sludge again, thereby increasing 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 a belt dehydrator disclosed in this embodiment is as follows: After the sludge enters the gravity dewatering module 2, when the sludge contacts the first row 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 row of guide blocks 303. The sludge content in the "blank area" is less than the sludge content between the two adjacent guide blocks 303. During the movement of the sludge, the liquid in it will flow to the "blank area", thereby causing the liquid to flow downward through the filter belt 61 and into the collection shell below.

[0043] When the sludge contacts the second row of guide blocks 303 , the second row of guide blocks 303 performs a diversion operation on the sludge again, so that the sludge is separated again and the mixing degree of the liquid and solid in the sludge is improved.

[0044] When the sludge passes through the guide block 303, the left side of the guide block 303 initially guides the sludge so that the sludge flows to the front and rear sides of the corresponding guide block 303. At the same time, the arc surface of the guide block 303 guides the sludge again so that the sludge is turned 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 dehydrator. Based on the embodiment 3, this embodiment also has the function of guiding and diverting the sludge on the filter belt 1 61 located at the gravity dehydration module 2.

[0046] like Figure 7 、 Figure 8 and Figure 10-13 As shown, it also includes: fixed cylinders 401, the number of which is consistent with the number of support rods 302, all of which are fixedly connected to 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, the support shells 402 are slidably connected with guide cylinders 403, and the guide cylinders 403 are used to guide sludge; driving members 404, the number of which is consistent with the number of fixed cylinders 401, are all fixed to the feed pipe 21, the telescopic end of the driving member 404 is fixed with a connecting rod 405, the driving member 404 is an electric push rod, which is only schematically shown in the figure. In this embodiment, the telescopic end of the driving member 404 performs reciprocating rapid work, that is, it quickly extends and retracts, and the connecting rod 405 is fixed 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 (such as Figure 8 ), the guide cylinder 403 intermittently diverts the corresponding "strip-shaped" sludge to improve the sludge confusion effect. After the telescopic end of the driving member 404 is fully extended, the adjacent guide cylinder 403 thereon does not contact the filter belt 61.

[0047] like Figure 10-13 As shown, a flexible sleeve 501 is fixed to the lower side of the guide tube 403. When the telescopic end of the driving member 404 is fully extended, the flexible sleeve 501 contacts the filter belt 1 61. The flexible sleeve 501 is made of corrosion-resistant rubber.

[0048] The specific working process of a belt dehydrator disclosed in this embodiment is as follows: When dewatering the sludge, the operator turns on all the driving members 404, and the telescopic ends of the driving members 404 begin to extend and retract reciprocally. During the extension of the telescopic ends of the driving members 404, the telescopic ends of the driving members 404 drive the connecting rods 405 to move downward, and the connecting rods 405 drive all the guide cylinders 403 thereon to move downward, and the guide cylinders 403 drive the flexible sleeves 501 thereon to move downward, until the telescopic ends of the driving members 404 move to the extreme position, the flexible sleeves 501 contact the filter belt 61, and at the same time the lower side of the guide cylinders 403 contact the sludge, and the flexible sleeves 501 and the guide cylinders 403 jointly guide the sludge, so that the sludge is dispersed again, increasing the degree of disorder of solids and liquids in the sludge, thereby reducing the probability of solid deposition in the sludge.

[0049] When the telescopic end of the driving member 404 contracts, the guide cylinder 403 moves upward and gradually loses contact with the sludge, and the flexible sleeve 501 loses contact with the filter belt 61, thereby losing the function of guiding the sludge, causing the sludge to continue to move to the right and contact the guide block 303 on the right.

[0050] Example 5 This embodiment discloses a water-saving belt dehydrator. Based on the embodiment 4, this embodiment also has the function of sucking and releasing the sludge on the filter belt 1 61 located at the gravity dehydration module 2.

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

[0052] This embodiment continues the process of Example 4, and is specifically as follows: When the flexible sleeve 501 contacts the filter belt 61 (the telescopic end of the driving member 404 has been fully extended), 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, and the air supply member 601 immediately starts the air extraction work. The air supply member 601 forms a negative pressure environment in all the guide tubes 403 through the transition pipe 602. At the same time, the guide tube 403 sucks the sludge in the flexible sleeve 501 and the guide tube 403 under the action of negative pressure, so that the sludge in both moves upward, thus completing the sludge suction work. During this process, the sucked sludge is always located in the guide tube 403.

[0053] After the sludge is sucked out, the telescopic end of the driving member 404 contracts and resets. At this time, the guide tube 403 carries the sludge inside it and moves upward, and a "blank area" is formed on the filter belt 61 corresponding to the guide tube 403. In this way, the water in the sludge on the side of the guide tube 403 corresponding to the filter belt 61 can flow downward through the "blank area" and pass through the filter belt 61.

[0054] After the telescopic end of the driving member 404 contracts and resets, the air supply member 601 immediately starts to supply air. The air supply member 601 pumps gas into all the guide cylinders 403 through the transition pipe 602, forcing the temporarily stored sludge in the guide cylinder 403 to be discharged to the surface of the filter belt 61. The above operation is repeated so that the filter belt 61 can move back and forth many times to form a "blank area", which is convenient for the discharge of liquid in the sludge, thereby improving the efficiency of sludge dehydration.

[0055] During the contact between the flexible sleeve 501 and the filter belt 61, since the filter belt 61 is always in a moving state, the flexible sleeve 501 will deflect, ensuring 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 above is a detailed introduction to the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A water-saving belt dehydrator, characterized in that: The invention comprises a support frame (1), a gravity dehydration module (2), a wedge-shaped pre-pressing module (3) and a squeezing dehydration module (4) are installed on the support frame (1), a feed pipe (21) is installed on the gravity dehydration module (2), a driver 1 (51) and a driver 2 (52) are provided on the support frame (1), a filter belt 1 (61) and a filter belt 2 (62) are slidably connected on the support frame (1), the filter belt 1 (61) passes through the gravity dehydration module (2), the wedge-shaped pre-pressing module (3) and the squeezing dehydration module (4), and the filter belt 1 (61) passes through the gravity dehydration module (2), the wedge-shaped pre-pressing module (3) and the squeezing dehydration module (4). The filter belt 2 (62) passes through the wedge-shaped pre-pressing module (3) and the pressing and dehydrating module (4), and the driver 1 (51) and the driver 2 (52) respectively drive the filter belt 1 (61) and the filter belt 2 (62). The filter belt 1 (61) is provided with an interception net (71). Two flushing modules (8) are installed on the support frame (1). The two flushing modules (8) flush and clean the filter belt 1 (61) and the filter belt 2 (62) respectively. A material receiving box (9) is fixed to one side of the support frame (1).

2. A water-saving belt dehydrator according to claim 1, characterized in that: Two support rollers (201) are rotatably connected to one side of the support frame (1) close to the material receiving box (9), and the support rollers (201) are used to guide the interception net (71) so as to separate the interception net (71) from the filter belt (61).

3. A water-saving belt dehydrator according to claim 2, characterized in that: Also included are: Two pressing blocks (202) are respectively fixed to adjacent support rollers (201), and 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 a raised portion, and the raised portion is used to alternately squeeze the interception net (71).

4. The water-saving belt dehydrator according to claim 1, characterized in that: The gravity dehydration module (2) comprises: A fixed frame (301) is fixedly connected to the support frame (1); the fixed frame (301) is fixedly connected to a plurality of support rods (302); the support rods (302) are fixedly connected to guide blocks (303) distributed in a linear array; the guide blocks (303) are provided with two symmetrically distributed arcuate surfaces, and the center of the circle where the two arcuate surfaces on the same guide block (303) are located is located on the back side of the two arcuate surfaces.

5. The water-saving belt dehydrator according to claim 4, characterized in that: In a direction from top to bottom, the projected area of ​​the guide block (303) on the horizontal plane gradually increases.

6. The water-saving belt dehydrator according to claim 5, characterized in that: All the guide blocks (303) on two adjacent support rods (302) are distributed in a staggered manner.

7. The water-saving belt dehydrator according to claim 4, characterized in that: Also included are: The number of fixed cylinders (401) is the same as the number of the support rods (302), and they are all fixedly connected to the fixed frame (301). The fixed cylinders (401) and the support rods (302) are staggered. The fixed cylinders (401) are fixedly connected to evenly distributed support shells (402), and the support shells (402) are slidably connected to the guide cylinders (403). The number of the driving members (404) is the same as the number of the fixed cylinders (401), and they are all fixed to the feed pipe (21). The telescopic end of the driving member (404) is fixed with a connecting rod (405), and the connecting rod (405) is fixed to all the guide cylinders (403) on the adjacent fixed cylinders (401).

8. The water-saving belt dehydrator according to claim 7, characterized in that: All the support shells (402) on the same fixed cylinder (401) and all the guide blocks (303) on the adjacent support rods (302) on the side close to the material receiving box (9) are distributed in a staggered manner.

9. The water-saving belt dehydrator according to claim 8, characterized in that: A flexible sleeve (501) is fixedly connected to the lower side of the guide tube (403).

10. The water-saving belt dehydrator according to claim 9, characterized in that: Also included are: An air supply component (601) is mounted on the fixing frame (301); There are a plurality of transition pipes (602), which are respectively fixed to the adjacent fixed cylinders (401), and the transition pipes (602) correspond to the fixed cylinders (401) one by one. The transition pipes (602) are connected to the air supply member (601) through a connecting pipe, and the transition pipes (602) are connected to all the guide cylinders (403) on the adjacent fixed cylinders (401).

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