CN116966658A - Belt filter press for sludge and sewage treatment - Google Patents

Abstract

The invention belongs to the technical field of sludge treatment, and discloses a belt filter press for sludge and sewage treatment, which includes a vertical plate. A first transmission mechanism and a second transmission mechanism are provided inside the vertical plate. The third transmission mechanism is arranged inside the vertical plate. A transmission mechanism includes a first filter cloth, the second transmission mechanism includes a second filter cloth, and vertical blocks located on the upper and lower sides of the second filter cloth are fixedly installed inside the vertical plate. By arranging a vertical block, a sealing wheel, a rotating block and a movable block, the present invention uses the discharged gas and small sludge particles to drive the rotating block and the movable block to rotate, and uses the movable block to knock the second filter cloth to generate vibration, which is different from the traditional Compared with the device, the sludge particles inside the second filter cloth are removed under the dual action of using high-pressure gas to flush the second filter cloth and the movable block to knock the second filter cloth to generate vibration, thereby achieving continuous cleaning operations. Improve cleaning effect.

Description

A belt filter press for sludge and sewage treatment

Technical field

The invention belongs to the technical field of sludge treatment, and is specifically a belt filter press for sludge and sewage treatment.

Background technique

With the rapid development of society, the production of sewage is increasing year by year. The problem of sewage treatment is one of the current urgent problems. The sewage is divided into multiple steps. First, the sewage is sedimented and filtered, and then the thicker sewage containing sludge is processed. To treat sewage, a belt filter press is usually used to squeeze the thick sludge to separate the sludge from the water, thereby achieving centralized treatment of the sludge. However, the belt filter press in the existing technology usually Using filter cloth as a conveyor belt, the sludge is squeezed between the filter cloths, causing water to seep downward through the filter cloth. During the extrusion process, small sludge particles and water will enter the filter together. The inside of the filter cloth will clog the filter cloth, and the sludge particles inside the filter cloth cannot be removed by just spraying water, thereby reducing the filtration effect of the sludge and making it difficult to clean, so it needs to be improved and optimized.

Contents of the invention

The object of the present invention is to provide a belt filter press for sludge and sewage treatment to solve the problems raised in the above background technology.

In order to achieve the above object, the present invention provides the following technical solution: a belt filter press for sludge and sewage treatment, which includes a vertical plate. A first transmission mechanism and a second transmission mechanism are provided inside the vertical plate. The third transmission mechanism is provided inside the vertical plate. A transmission mechanism includes a first filter cloth, the second transmission mechanism includes a second filter cloth, and vertical blocks located on the upper and lower sides of the second filter cloth are fixedly installed inside the vertical plate. An air inlet pipe is fixedly installed on the top, a sealing wheel located on the upper and lower surfaces of the second filter cloth is rotatably installed inside the vertical block, a bottom block is fixedly installed on the bottom end of the vertical block, and a rotary seal wheel located on the upper and lower surfaces of the second filter cloth is fixedly installed inside the vertical plate. There is a vibration chamber on the bottom surface of the second filter cloth. The left end of the bottom block passes through the vibration chamber and is fixedly installed with a first ventilation pipe. A horizontal axis is rotatably installed inside the vibration chamber, and a rotating shaft is fixedly installed on the outer surface of the horizontal axis. A movable block and a spring are movably installed inside the rotating block, and a collection chamber is fixedly installed at the bottom end of the bottom block.

Preferably, the rear end of the first vent pipe penetrates the vertical plate and is fixedly installed with a second vent pipe, the left end of the vertical plate is fixedly installed with a mud inlet chamber, and the left end of the mud inlet chamber is fixedly connected with a feed pipe. , a fixed rod is fixedly installed inside the mud inlet chamber, the fixed rod is connected with the second ventilation pipe, an exhaust hole is provided on the outer surface of the fixed rod, and an exhaust hole is fixedly installed at the bottom end of the mud inlet chamber. Material tube.

Preferably, a diverter block is fixedly installed at the bottom end of the discharge pipe, the diverter block is evenly located at the outlet of the discharge pipe, and both sides of the diverter block are distributed in a figure-eight shape.

Preferably, a water pipe is fixedly installed inside the vertical plate, and a plurality of nozzles are fixedly installed at the bottom end of the water pipe, and the plurality of nozzles are evenly distributed.

Preferably, the first transmission mechanism further includes a first roller, a second roller and a first extrusion roller that are rotatably installed inside the vertical plate, between the first roller, the second roller and the first extrusion roller. Through the transmission connection of the first filter cloth, a first motor is fixedly installed on the front side of the vertical plate, and the output shaft of the first motor is fixedly connected to the first roller.

Preferably, the second transmission mechanism also includes a third roller, a fourth roller, a fifth roller and a second squeeze roller that are rotatably installed inside the vertical plate. The third roller, fourth roller and fifth roller are It is drivingly connected to the second squeeze roller through the second filter cloth. A second motor is fixedly installed on the front side of the vertical plate, and the output shaft of the second motor is fixedly connected to the third roller.

Preferably, the end of the movable block is arc-shaped, and the end of the movable block is evenly provided with grooves.

Preferably, the gap between the second filter cloth and the first filter cloth gradually increases from the middle to both sides, and the movement speeds of the first filter cloth and the second filter cloth are synchronized.

Preferably, a spring is elastically connected to the inside of the rotary block, and both ends of the spring are fixedly connected to the bottom end of the movable block and the bottom of the inner cavity of the rotary block respectively.

Preferably, the outer surface of the sealing wheel is smooth, and the outer surface of the sealing wheel is in close contact with the contact surface between the vertical block and the second filter cloth.

The beneficial effects of the present invention are as follows:

1. In the present invention, by arranging a vertical block, a sealing wheel, a rotating block and a movable block, the high-pressure gas introduced through the air inlet pipe uses the high-pressure gas to pass through the second filter cloth to remove the small sludge particles inside the second filter cloth. out, and then use the discharged gas and small sludge particles to drive the rotating block and the movable block to rotate, and the movable block knocks the second filter cloth to generate vibration. Compared with the traditional device, the second filter cloth is vibrated by using high-pressure gas. The sludge particles inside the second filter cloth are removed under the dual effects of flushing and vibration caused by the knocking of the movable block on the second filter cloth, achieving continuous cleaning operations and improving the cleaning effect.

2. In the present invention, by arranging the rotating block and the movable block, the gas passing through the second filter cloth drives the rotating block and the movable block, so that the movable block moves outward under the action of centrifugal force, and the movable block contacts the second filter cloth. and impact, causing it to vibrate. Compared with the traditional device, the end of the device's movable block has less contact surface with the bottom surface of the second filter cloth, and with the movement of the movable block, the relationship between the movable block and the second filter cloth gradually changes. The contact position between the movable block and the second filter cloth reduces the friction loss in the contact between the movable block and the second filter cloth, and the friction surface loss is even, reducing the kinetic energy consumption when the movable block and the second filter cloth contact.

3. In the present invention, by arranging a fixed rod, an exhaust hole, a discharge pipe and a diverter block, the high-pressure gas discharged after cleaning the second filter cloth is discharged into the inside of the mud chamber. The amount of gas entering gradually increases, and gradually Increase the air pressure inside the mud inlet chamber, and squeeze the sludge inside the mud inlet chamber through the air pressure. Compared with the traditional device, this device uses the remaining gas after cleaning to fully compress the sludge and flocculant inside the mud inlet chamber. Stirring allows the sludge to fully settle, while speeding up the discharge rate of sludge inside the mud chamber and improving work efficiency.

Description of the drawings

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a schematic structural diagram of the back side of the present invention;

Figure 3 is a schematic structural diagram of the sealing wheel of the present invention;

Figure 4 is a schematic diagram of the internal structure of the vertical block of the present invention;

Figure 5 is a partial enlarged structural schematic diagram of position A in Figure 4 of the present invention;

Figure 6 is a schematic structural diagram of the movable block of the present invention;

Figure 7 is a schematic diagram of the internal structure of the mud entry chamber of the present invention.

In the picture: 1. Vertical plate; 2. First roller; 3. Second roller; 4. First squeeze roller; 5. First filter cloth; 6. Third roller; 7. Fourth roller; 8. Five rollers; 9. Sixth roller; 10. Second squeeze roller; 11. Second filter cloth; 12. First motor; 13. Second motor; 14. Vertical block; 15. Intake pipe; 16. Sealing wheel ; 17. Bottom block; 18. Vibration chamber; 19. Collection chamber; 20. Horizontal axis; 21. Rotating block; 22. Movable block; 23. Spring; 24. First vent pipe; 25. Second vent pipe; 26 , enter the mud chamber; 27. Fixed rod; 28. Exhaust hole; 29. Feed pipe; 30. Discharge pipe; 31. Diverter block; 32. Water pipe; 33. Nozzle; 34. Groove.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

As shown in Figures 1 to 7, an embodiment of the present invention provides a belt filter press for sludge and sewage treatment, which includes a vertical plate 1. A first transmission mechanism and a second transmission mechanism are provided inside the vertical plate 1. The first transmission mechanism includes a first filter cloth 5, and the second transmission mechanism includes a second filter cloth 11. Vertical blocks 14 located on the upper and lower sides of the second filter cloth 11 are fixedly installed inside the vertical plate 1. The vertical blocks 14 An air inlet pipe 15 is fixedly installed on the top of the vertical block 14, a sealing wheel 16 located on the upper and lower surfaces of the second filter cloth 11 is rotatably installed inside the vertical block 14, a bottom block 17 is fixedly installed on the bottom of the vertical block 14, and the vertical plate 1 is fixedly installed inside. There is a vibration chamber 18 located on the bottom surface of the second filter cloth 11. The left end of the bottom block 17 passes through the vibration chamber 18 and is fixedly installed with a first ventilation pipe 24. A horizontal axis 20 is rotatably installed inside the vibration chamber 18, and the outer surface of the horizontal axis 20 A rotating block 21 is fixedly installed, a movable block 22 and a spring 23 are movable inside the rotating block 21, and a collection chamber 19 is fixedly installed at the bottom of the bottom block 17;

Among them, the staff starts the device and squeezes and dehydrates the sludge through the device. At the same time, high-pressure gas is introduced into the vertical block 14 through the air inlet pipe 15. The high-pressure gas accumulates inside the vertical block 14, and then passes through the third The second filter cloth 11 then brings out the moisture and small sludge particles inside the second filter cloth 11. The passing moisture and small sludge particles move downward with the gas and enter the inside of the bottom block 17 and the vibration chamber 18, and then interact with the rotor. The block 21 and the movable block 22 collide, and the gas passes through the vibration chamber 18 to drive the rotating block 21 and the movable block 22 to rotate. When the movable block 22 rotates, it will move outward under the action of centrifugal force. The two filter cloths 11 contact and impact, causing the second filter cloth 11 to vibrate. At the same time, when the small sludge particles come into contact with the rotating block 21 and the movable block 22, they will be blocked by the rotating block 21 and the movable block 22, thus Dropped into the collection chamber 19.

The high-pressure gas introduced through the air inlet pipe 15 uses the high-pressure gas to pass through the second filter cloth 11 to bring out the small sludge particles inside the second filter cloth 11, and then uses the discharged gas and the small sludge particles to drive the rotation. The block 21 and the movable block 22 rotate, and the second filter cloth 11 is struck by the movable block 22 to generate vibration. Compared with the traditional device, the second filter cloth 11 is flushed by high-pressure gas and the second filter cloth 11 is filtered by the movable block 22. The sludge particles inside the second filter cloth 11 are removed under the dual action of vibration generated by the knocking of the cloth 11, realizing continuous cleaning operations and improving the cleaning effect.

The gas passing through the second filter cloth 11 drives the rotating block 21 and the movable block 22, causing the movable block 22 to move outward under the action of centrifugal force. The movable block 22 contacts and impacts the second filter cloth 11, causing it to Vibration, compared with the traditional device, the end of the device's movable block 22 has less contact surface with the bottom surface of the second filter cloth 11, and with the movement of the movable block 22, the relationship between the movable block 22 and the second filter cloth 11 gradually changes. The contact position between the movable block 22 and the second filter cloth 11 reduces the friction loss in the contact between the movable block 22 and the second filter cloth 11, and the friction surface loss is even, reducing the kinetic energy consumption when the movable block 22 and the second filter cloth 11 contact.

As shown in Figure 7, the rear end of the first vent pipe 24 penetrates the vertical plate 1 and is fixedly installed with the second vent pipe 25. The left end of the vertical plate 1 is fixedly installed with a mud inlet chamber 26, and the left end of the mud inlet chamber 26 is fixedly connected with The feed pipe 29 has a fixed rod 27 fixedly installed inside the mud feed chamber 26. The fixed rod 27 is connected with the second ventilation pipe 25. An exhaust hole 28 is provided on the outer surface of the fixed rod 27. The bottom end of the mud feed chamber 26 is fixed. A discharge pipe 30 is installed;

Among them, the staff introduces high-pressure gas into the interior through the air inlet pipe 15. The gas passes through the vertical block 14 and the vibration chamber 18 and then enters the inside of the second ventilation pipe 25. Then the gas enters the inside of the fixed rod 27 through the second ventilation pipe 25. , and then the gas is sprayed out evenly through the exhaust hole 28, and the sludge and flocculant inside the mud inlet chamber 26 are fully stirred by the gas. As the gas gradually enters the inside of the mud inlet chamber 26, the inside of the feed pipe 29 The solenoid valve is in a closed state, causing the air pressure inside the mud inlet chamber 26 to gradually increase. The gradually increasing pressure exerts pressure on the sludge inside the mud inlet chamber 26. The pressure causes the viscous sludge inside the mud inlet chamber 26 to accelerate towards the downward flow;

The high-pressure gas discharged after cleaning the second filter cloth 11 is discharged into the inside of the mud inlet chamber 26. The amount of gas entering gradually increases, gradually increasing the air pressure inside the mud inlet chamber 26, and the air pressure inside the mud inlet chamber 26 The sludge is squeezed. Compared with the traditional device, this device uses the remaining gas after cleaning to fully stir the sludge and flocculant inside the mud inlet chamber 26, so that the sludge can be fully precipitated and at the same time accelerates the entry into the mud chamber. 26 internal sludge discharge rate to improve work efficiency.

As shown in Figure 7, a diverter block 31 is fixedly installed at the bottom end of the discharge pipe 30. The diverter block 31 is evenly located at the outlet of the discharge pipe 30, and both sides of the diverter block 31 are distributed in a figure-eight shape;

Among them, due to the design of the diverter block 31, the sludge inside the mud inlet chamber 26 will be evenly distributed on the surface of the second filter cloth 11 through the diverter block 31, avoiding accumulation and causing the water in the sludge to be squeezed out. More thorough.

As shown in Figure 2, a water pipe 32 is fixedly installed inside the vertical plate 1, and a plurality of nozzles 33 are fixedly installed at the bottom end of the water pipe 32, and the plurality of nozzles 33 are evenly distributed;

Among them, the staff introduces a certain pressure of water flow through the water pipe 32, and the water flow inside the water pipe 32 is sprayed downward through the nozzle 33, thereby simply flushing the surface of the first filter cloth 5.

As shown in Figure 3, the first transmission mechanism also includes a first roller 2, a second roller 3 and a first squeeze roller 4 that are rotatably installed inside the vertical plate 1. The extrusion rollers 4 are drivingly connected through the first filter cloth 5. The first motor 12 is fixedly installed on the front of the vertical plate 1, and the output shaft of the first motor 12 is fixedly connected to the first roller 2;

Among them, the staff starts the first motor 12. Due to the operation of the first motor 12, the first roller 2 will be driven to rotate, and then the second roller 3 will be driven to rotate through the first filter cloth 5, keeping in contact with the second filter cloth 11. The movement speed is consistent, and the sludge on the surface of the second filter cloth 11 is gradually squeezed by the first squeezing roller 4, thereby squeezing and dehydrating the sludge between the first filter cloth 5 and the second filter cloth 11.

As shown in Figure 3, the second transmission mechanism also includes a third roller 6, a fourth roller 7, a fifth roller 8 and a second squeeze roller 10 that are rotatably installed inside the vertical plate 1. The roller 7, the fifth roller 8 and the second squeeze roller 10 are connected through the second filter cloth 11. The second motor 13 is fixedly installed on the front of the vertical plate 1. The output shaft of the second motor 13 is fixedly connected to the third roller 6. ;

Among them, the staff starts the second motor 13. Due to the operation of the second motor 13, the third roller 6 will be driven to rotate, and then the fourth roller 7, the fifth roller 8, and the sixth roller 9 will be driven through the second filter cloth 11. The rotation occurs to transport the sludge falling to the surface of the second filter cloth 11. The second squeeze roller 10 provides good support to the second filter cloth 11 to facilitate the passage of the first filter cloth 5 and the second filter cloth 11. The cooperation between the filter cloths 11 squeezes and dehydrates the sludge.

As shown in Figure 4, the end of the movable block 22 is arc-shaped, and the end of the movable block 22 is evenly provided with grooves 34;

Among them, due to the design of the movable block 22 and the groove 34, when the rotating block 21 drives the movable block 22 to rotate and collide with the second filter cloth 11, the contact area between the movable block 22 and the second filter cloth 11 will be reduced. , thereby reducing the energy loss caused by friction, and at the same time exerting a certain vibration effect on the second filter cloth 11 to remove small sludge particles remaining inside the second filter cloth 11 .

As shown in Figure 3, the gap between the second filter cloth 11 and the first filter cloth 5 gradually becomes larger from the middle to both sides, and the movement speeds of the first filter cloth 5 and the second filter cloth 11 remain synchronized;

Among them, due to the design of the second filter cloth 11 and the first filter cloth 5, the sludge located between the second filter cloth 11 and the first filter cloth 5 will be gradually squeezed from left to right, thereby The water in the sludge is squeezed out, and the synchronous operation can prevent the sludge between the second filter cloth 11 and the first filter cloth 5 from rubbing, causing the surfaces of the first filter cloth 5 and the second filter cloth 11 to become more clogged. serious.

As shown in Figure 5, a spring 23 is elastically connected inside the rotary block 21, and the two ends of the spring 23 are fixedly connected to the bottom end of the movable block 22 and the bottom of the inner cavity of the rotary block 21 respectively;

Among them, due to the design of the spring 23, when the horizontal axis 20 drives the rotating block 21 and the movable block 22 to rotate, the movable block 22 will move outward under the action of centrifugal force, and the spring 23 is in an elastic stretching state under tension. When the horizontal shaft 20 stops rotating, the movable block 22 is reset to the inside of the rotating block 21 due to the elastic recovery effect of the spring 23 .

As shown in Figures 3 and 4, the outer surface of the sealing wheel 16 is smooth, and the outer surface of the sealing wheel 16 is in close contact with the contact surface of the vertical block 14 and the second filter cloth 11;

Among them, due to the design of the sealing wheel 16, when the second filter cloth 11 is running, the sealing wheel 16 will be driven to rotate together. At this time, the sealing wheel 16, the second filter cloth 11 and the vertical block 14 are relatively sealed, and then through The high pressure cleans the small sludge particles on the surface and inside of the second filter cloth 11.

Working principle and usage process:

The high-pressure gas introduced through the air inlet pipe 15 uses the high-pressure gas to pass through the second filter cloth 11 to bring out the small sludge particles inside the second filter cloth 11, and then uses the discharged gas and the small sludge particles to drive the rotation. The block 21 and the movable block 22 rotate, and the second filter cloth 11 is struck by the movable block 22 to generate vibration;

The gas passing through the second filter cloth 11 drives the rotating block 21 and the movable block 22, causing the movable block 22 to move outward under the action of centrifugal force. The movable block 22 contacts and impacts the second filter cloth 11, causing it to vibration;

The high-pressure gas discharged after cleaning the second filter cloth 11 is discharged into the inside of the mud inlet chamber 26. The amount of gas entering gradually increases, gradually increasing the air pressure inside the mud inlet chamber 26, and the air pressure inside the mud inlet chamber 26 The sludge is squeezed.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations are mutually exclusive. any such actual relationship or sequence exists between them. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principles and spirit of the invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a belt filter press for sludge sewage treatment, includes riser (1), its characterized in that: the inside of riser (1) is provided with first drive mechanism and second drive mechanism, first drive mechanism is including first filter cloth (5), second drive mechanism is including second filter cloth (11), the inside fixed mounting of riser (1) has vertical piece (14) that are located the upper and lower both sides of second filter cloth (11), the top fixed mounting of vertical piece (14) has intake pipe (15), the internally mounted who erects piece (14) has sealed wheel (16) that are located the upper and lower surface of second filter cloth (11), the bottom fixed mounting of vertical piece (14) has foundation block (17), the inside fixed mounting of riser (1) has vibration room (18) that are located second filter cloth (11) bottom surface, the left end of foundation block (17) runs through vibration room (18) and fixed mounting have first (24), the inside rotation of vibration room (18) installs cross axle (20), the surface fixed mounting of cross axle (20) has transfer piece (21), the inside fixed mounting of transfer piece (21) has foundation block (23) and movable mounting spring (19).

2. A belt filter press for sludge and sewage treatment according to claim 1, wherein: the rear end of first breather pipe (24) runs through riser (1) and fixed mounting has second breather pipe (25), the left end fixed mounting of riser (1) has into mud room (26), the left end fixedly connected with inlet pipe (29) of advancing mud room (26), the inside fixed mounting of advancing mud room (26) has dead lever (27), dead lever (27) and second breather pipe (25) intercommunication, exhaust hole (28) have been seted up to the surface of dead lever (27), the bottom fixed mounting of advancing mud room (26) has row material pipe (30).

3. A belt filter press for sludge and sewage treatment according to claim 2, wherein: the bottom end fixed mounting of row material pipe (30) has reposition of redundant personnel piece (31), reposition of redundant personnel piece (31) evenly are located the exit of row material pipe (30), just the both sides of reposition of redundant personnel piece (31) are splayed and distribute.

4. A belt filter press for sludge and sewage treatment according to claim 1, wherein: the inside fixed mounting of riser (1) has water pipe (32), the bottom fixed mounting of water pipe (32) has a plurality of nozzle (33), a plurality of nozzle (33) evenly distributed.

5. A belt filter press for sludge and sewage treatment according to claim 1, wherein: the first transmission mechanism further comprises a first roller (2), a second roller (3) and a first extrusion roller (4) which are rotatably arranged inside the vertical plate (1), the first roller (2), the second roller (3) and the first extrusion roller (4) are in transmission connection through a first filter cloth (5), a first motor (12) is fixedly arranged on the front surface of the vertical plate (1), and an output shaft of the first motor (12) is fixedly connected with the first roller (2).

6. A belt filter press for sludge and sewage treatment according to claim 1, wherein: the second transmission mechanism further comprises a third roller (6), a fourth roller (7), a fifth roller (8) and a second extrusion roller (10) which are rotatably arranged inside the vertical plate (1), the third roller (6), the fourth roller (7), the fifth roller (8) and the second extrusion roller (10) are in transmission connection through a second filter cloth (11), a second motor (13) is fixedly arranged on the front surface of the vertical plate (1), and an output shaft of the second motor (13) is fixedly connected with the third roller (6).

7. A belt filter press for sludge and sewage treatment according to claim 1, wherein: the end part of the movable block (22) is arc-shaped, and grooves (34) are uniformly formed in the end part of the movable block (22).

8. A belt filter press for sludge and sewage treatment according to claim 1, wherein: the gap between the second filter cloth (11) and the first filter cloth (5) is gradually increased from the middle to the two sides, and the movement speeds of the first filter cloth (5) and the second filter cloth (11) are kept synchronous.

9. A belt filter press for sludge and sewage treatment according to claim 1, wherein: the inside elastic connection of commentaries on classics piece (21) has spring (23), the both ends of spring (23) respectively with movable block (22) bottom and commentaries on classics piece (21) inner chamber bottom fixed connection.

10. A belt filter press for sludge and sewage treatment according to claim 1, wherein: the outer surface of the sealing wheel (16) is smooth, and the outer surface of the sealing wheel (16) is in close contact with the contact surface of the vertical block (14) and the second filter cloth (11).