CN220034303U - Novel concentrated belt filter press - Google Patents

Abstract

The utility model relates to the field of sludge treatment, in particular to a novel concentration belt filter press. The device comprises a frame, a feeding device and a discharging device, wherein a closed housing is arranged outside the frame, and an exhaust port is arranged on the closed housing. The frame is internally provided with a concentration area and a squeezing area, and the feeding device extends into the sealed housing from the outer side wall and is communicated with the feeding device of the concentration area. The concentration zone is located above the press zone, and the press zone inlet is located below the concentration zone outlet. The discharging device is positioned at the outlet of the pressing area, and the side wall of the closed housing corresponding to the discharging device is provided with an opening and is communicated with the outlet of the discharging device. The sludge is pre-dehydrated through gravity in the concentration area, and a series of squeezing rollers in the squeezing area enable the sludge to be more uniform and compact. Moreover, the frame is provided with a closed housing, and the top of the frame is provided with an exhaust port, so that the odor generated in the sludge treatment can be conveniently and intensively treated, the pollution is reduced, and the full-closed requirement of the belt type concentration filter press is met.

Description

Novel concentrated belt filter press

Technical Field

The utility model relates to the field of sludge treatment, in particular to a novel concentration belt filter press.

Background

A large amount of sludge which needs to be pre-concentrated and dehydrated is produced by a plurality of domestic sludge treatment plants every day, and the water content of the sludge after primary sedimentation and secondary sedimentation of excess sludge is over 99 percent; secondly, the sludge with the water content of about 99 percent is required to be dehydrated again, and the water content of the sludge is controlled to be about 95 to 97 percent; and then the sludge is further squeezed and dehydrated by a belt type squeezing filter, so that the water content of the sludge cake reaches about 78-85%. The dewatered mud cake is generally subjected to reduction and innocent treatment by centralized and deep dewatering, incineration or other modes.

The traditional belt filter press equipment mostly adopts split type, namely, a belt thickener and a belt press filter achieve the dehydration requirements of concentration and pressing in a superposition mode, so that the occupied space is large, and the cost is higher; in addition, the superposition mode cannot achieve a good full-closed effect, and harmful gas generated in the sludge treatment process can be directly released in the air, so that the harmful gas is harmful to the body of an operator and pollutes the environment.

There is no similar model in China at present, and development and application of the equipment are needed to meet market demands.

Disclosure of Invention

The utility model provides a novel concentration belt filter press, which provides the following technical scheme for improving the sludge dewatering rate and meeting the equipment sealing requirement:

the utility model provides a concentrated belt filter press, includes frame, feed arrangement, discharge apparatus, its characterized in that, the frame outside has the sealed housing, has the gas vent on the sealed housing. The frame is internally provided with a concentration area and a squeezing area, and the feeding device extends into the sealed housing from the outer side wall and is communicated with the feeding position of the concentration area. The concentration zone is located below the press zone, and the press zone inlet is located below the concentration zone outlet. The discharging device is positioned at the outlet of the pressing area, and the side wall of the closed housing corresponding to the discharging device is provided with an opening and is communicated with the outlet of the discharging device.

Through adopting above-mentioned technical scheme, mud carries out dehydration pretreatment through concentrated district, relies on gravity, presses the extrusion of a series of squeeze rolls in district again for it is even tight more, and this equipment is through concentrating the mode of squeezing the integration, saves more space. And secondly, the sealed housing outside the frame can prevent the direct release of harmful gases in the sludge treatment process, and the exhaust port at the top of the sealed housing can effectively collect waste gas so as to reduce pollution and meet higher environmental protection requirements.

Further, the concentration zone is provided with a belt conveyor which is inclined, and one end of the belt conveyor, which is close to the feeding device, is lower than one end, which is far away from the feeding device.

By adopting the technical scheme, the sludge is pre-dehydrated by means of gravity through an inclined belt conveyor, and the water content is concentrated from 99% to about 95-97%.

Further, the press zone comprises a plurality of press rolls, an upper filter belt and a lower filter belt, the press rolls are arranged in a staggered mode from top to bottom along the direction of a horizontal straight line, the press rolls are divided into a first press roll set and a second press roll set from front to back, the outer diameters of the press rolls in the first press roll set are gradually reduced from front to back, the outer diameters of the press rolls in the second press roll set are equal, and the upper filter belt and the lower filter belt bypass all the press rolls in sequence.

Through adopting above-mentioned technical scheme, the mud cake that comes out from the concentrated district gets into and presses the district secondary dehydration, and first through first press roll group in advance, the mud cake receives continuously improved shearing and squeezing force, through the pressure that the gradient increases, makes the mud cake receive continuous high strength to squeeze, then presses through second press roll group, makes it further dehydrate.

Further, a first water collecting tank is arranged below the belt conveyor, and a second water collecting tank is arranged below the press roller set.

Through adopting above-mentioned technical scheme, this device will concentrate district and squeeze the district and establish as an organic wholely, and set up first water catch bowl in concentrated district respectively, squeeze the district and set up the second water catch bowl, make the mud also can concentrate and collect moisture wherein when carrying out pretreatment through concentrated district like this. When the sludge is pressed through the pressing area, the dehydration rate of the sludge can be further improved, and the dehydration treatment can be more efficiently performed.

Further, the concentration zone has a first synchronous tensioning device for adjusting the tension of the belt conveyor, and the press zone has a second synchronous tensioning device for adjusting the tension of the upper and lower belts.

Through adopting above-mentioned technical scheme, synchronous overspeed device tensioner includes tensioning roller group and bypasses the filter belt of roller system, and tensioning roller horizontal migration exerts certain pressure to the filter belt, makes it obtain the pre-compaction arrangement, possesses appropriate tensioning force in the transmission process for keeping the filter belt to avoid the filter belt to skid, prevent that the filter belt from becoming flexible, droing.

Further, the concentration zone is provided with a first deviation rectifying and protecting device, and the first deviation rectifying and protecting device is used for rectifying when the conveying belt of the belt conveyor deviates. The squeezing area is provided with a second deviation rectifying and protecting device which is used for rectifying the deviation of the upper filter belt and the lower filter belt when the upper filter belt is deviated.

By adopting the technical scheme, when the filter belt moves away from the track, the deviation correcting roller forms a certain angle with the moving direction of the filter belt, so that the deviation of the filter belt is corrected, and the filter belt returns to the normal position.

Further, the concentration zone has a first flushing device for cleaning the belt conveyor belt and the press zone has a second flushing device for cleaning the belt conveyor belt and the upper and lower filter belts.

Through adopting above-mentioned technical scheme, washing unit distributes in the top of every filter belt, and in equipment working process, the water that has certain pressure washs the filter belt, guarantees the normal work of next circulation.

Further, the closed housing has a drive assembly including a first drive assembly for powering the belt conveyor and a second drive assembly for powering the upper and lower belts.

By adopting the technical scheme, the first transmission device transmits power to the belt conveyor to enable the belt conveyor to rotate, so that the filter belt is driven to move, and the power device provides driving force for equipment.

Further, a guide plate is arranged between the outlet of the concentration zone and the inlet of the squeezing zone.

Through adopting above-mentioned technical scheme, the mud need fall into the squeezing zone of below after squeezing in concentrated district, set up the deflector can make mud more accurate fall into on the filter belt in squeezing zone, prevent mud spill.

In summary, the beneficial effects of the utility model are as follows:

1. the concentration area and the squeezing area are overlapped and arranged in the frame, the sludge is dehydrated through the concentration area and is pre-treated by gravity, and then is squeezed by a series of squeezing rollers in the squeezing area, so that the sludge is more uniformly compacted.

2. The exhaust port is reserved at the top of the closed housing outside the frame, so that the direct release of harmful gas in the sludge treatment process can be prevented, and the exhaust port at the top of the closed housing is convenient for centralized treatment of odor generated in sludge treatment, so that pollution is reduced, and higher environmental protection requirements are met.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

In the figure: 1. a frame; 2. a concentration zone; 3. an exhaust port; 4. a closed housing; 5. a synchronous tensioning device; 6. a feeding device; 7. deviation rectifying and protecting device; 8. a flushing device; 9. a press section; 10. a discharging device; 11. a transmission device; 12. a belt conveyor; 13. a first water collection sump; 14. a second water collection sump; 15. a guide plate; 16. a first press roll set; 17. and a second press roll set.

Detailed Description

The present utility model is described in further detail below in conjunction with fig. 1.

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Referring to fig. 1, the novel concentrated belt filter press comprises a frame 1, a feeding device 6 and a discharging device 10, wherein a closed housing 4 is arranged outside the frame 1, and an exhaust port 3 is formed in the closed housing 4. The sealed housing 4 outside the frame 1 can prevent the direct release of harmful gases in the sludge treatment process, and the exhaust port 3 at the top of the sealed housing 4 can effectively collect waste gas so as to reduce pollution and meet higher environmental protection requirements.

The machine frame 1 is internally provided with a concentration zone 2 and a squeezing zone 9, the feeding device 6 extends into the outer side wall of the closed housing 4 and is communicated with the feeding position of the concentration zone 2, the concentration zone 2 is provided with a belt conveyor 12, the belt conveyor 12 is inclined, and one end, close to the feeding device 6, of the belt conveyor is lower than one end, far away from the feeding device 6.

The belt conveyor in the concentration zone 2 enables the sludge to be dehydrated and pretreated by gravity so as to reduce the water content of the sludge. And then the sludge is extruded by a series of press rollers in the press area 9, so that the sludge is subjected to gradient increasing press force to form a sludge cake, the sludge cake is more uniform and compact, and the dehydration rate of the sludge cake is further improved by adopting a dehydration mode of concentrating and pressing integration.

The concentration zone 2 is located above the press zone 9, and the press zone 9 inlet is located below the concentration zone 2 outlet. The discharging device 10 is positioned at the outlet of the pressing zone 9, and the side wall of the closed housing 4 corresponding to the discharging device 10 is provided with an opening and is communicated with the outlet of the discharging device 10. The press zone 9 comprises a plurality of press rolls, an upper filter belt and a lower filter belt, wherein the press rolls are arranged in a staggered manner from top to bottom along the direction of a horizontal straight line, the press rolls are divided into a first press roll set 16 and a second press roll set 17 from front to back, the outer diameters of the press rolls in the first press roll set 16 are gradually reduced from front to back, the outer diameters of the press rolls in the second press roll set 17 are equal, and the upper filter belt and the lower filter belt bypass all the press rolls in sequence.

The mud cake enters the pressing area 9 after pre-dewatering, the mud cake is subjected to continuously improved shearing and pressing force through the first pressing roller set 16, the mud cake is subjected to continuous high-strength pressing through the pressure increased in a gradient mode, and then the mud cake is subjected to further dewatering through the pressing of the second pressing roller set 17.

Below the belt conveyor 12 is a first water collection tank 13 and below the press roll stack is a second water collection tank 14.

Thus, the sludge can be concentrated to collect the moisture in the sludge when the sludge is subjected to the pre-dewatering treatment in the concentration zone 2, so that the dewatered moisture cannot flow into the sludge again. When the sludge is pressed by the pressing area 9, the dehydration rate of the sludge can be further improved, and the dehydration treatment can be more efficiently performed.

The concentrating section 2 and the pressing section 9 are each provided with a synchronizing Zhang Jing device 5, and the concentrating section 2 is provided with a first synchronizing tensioning device for adjusting the tension of the belt conveyor 12. The press section 9 has a second synchronous tensioning device for adjusting the tension of the upper and lower belts.

The tensioning device is used for tensioning the filter belt and applying a certain pressure to obtain pre-pressing arrangement. The upper and lower filter belts of the squeezing area 9 are synchronously tensioned by adopting air cylinders, and the tensioning pressure of the upper and lower filter belts can be respectively adjusted by an air pressure regulating valve. The technical means is already the prior art, so the description is not repeated.

The concentrating area 2 and the squeezing area 9 are both provided with a rectifying and protecting device 7, the concentrating area 2 is provided with a first rectifying and protecting device, and rectifying operation is carried out on the conveyor belt of the belt conveyor 12 when the conveyor belt is deviated; the squeezing area 9 is provided with a second deviation rectifying and protecting device which is used for rectifying the deviation of the upper and lower filter belts when the upper and lower filter belts deviate. The flushing device 8 is composed of a water inlet pipe, a nozzle, a sealing cover and the like, and after the equipment completes one-round dehydration work, flushing water with a certain pressure is used for cleaning the filter belt, so that the conveyor belt and the upper and lower filter belts are cleaned, and the normal work of the next cycle is ensured.

The concentrating zone 2 and the pressing zone 9 are both provided with flushing devices 8, the concentrating zone 2 is provided with a first flushing device for cleaning the conveyor belt of the belt conveyor 12, and the pressing zone 9 is provided with a second flushing device for cleaning the conveyor belt and the upper and lower filter belts. The flushing device 8 above the belt conveyor 12 and the upper and lower filter belts in the press zone 9 can spray water with pressure to clean the filter belts so as to ensure the normal operation of the conveyor belt or the filter belt for conveying sludge each time. The technical means is already the prior art, so the description is not repeated.

The closed housing 4 has a drive 11 comprising a first drive for powering the belt conveyor 12 and a second drive for powering the upper and lower belts. The technical means is already the prior art, so the description is not repeated.

A guide plate 15 is arranged between the outlet of the concentration zone 2 and the inlet of the pressing zone 9.

The sludge needs to fall into the pressing zone 9 below after being pressed in the concentration zone 2, and the guide plate 15 is arranged to enable the sludge to fall into the filter belt of the pressing zone 9 more accurately, so that the sludge is prevented from splashing.

The working principle of the utility model is as follows: the sludge to be treated enters from the feeding device 6 at one side of the novel concentrating belt filter press, firstly, the sludge is conveyed into the concentrating area 2 through the belt conveyor 12, and the sludge is pre-dehydrated by means of self gravity, so that the water content of the sludge is concentrated from about 99% to about 95-97%, mud cakes are formed, and the mud cakes are conveyed out from the outlet of the belt conveyor 12 and fall into the filter belt on the squeezing area 9.

Secondly, mud cakes are conveyed to one side through an upper filter belt, fall between the upper filter belt and a lower filter belt, and then enter between the press roller sets through extrusion. The mud cake is obtained by extrusion of the first press roll set 16 and the second press roll set 17. During this period, if the deviation correcting and protecting device 7 senses the deviation of the conveyor belt or the filter belt, the deviation correcting treatment can be performed timely. The synchronous tensioning device 5 performs synchronous tensioning through the adjustment of the air cylinder, so that the filter belt has enough tension to prevent the filter belt from slipping.

Finally, the mud cake is conveyed to the unloading device 10 through an upper filter belt and a lower filter belt, the mud cake on the filter belt is peeled off by a scraper, and falls out from the opening of the closed housing 4, and finally the mud cake material meeting the dehydration rate is obtained.

After the equipment finishes one-time sludge treatment, the flushing device 8 sprays water with pressure to clean the filter belt so as to ensure the normal operation of the next sludge treatment work. In the whole sludge treatment process, the closed housing 4 outside the frame 1 can prevent the generated harmful gas from being directly released, and the exhaust port 3 at the top of the closed housing 4 can effectively collect the exhaust gas so as to reduce pollution and meet higher environmental protection requirements.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to specific circumstances.

While the utility model has been described in connection with specific embodiments, it will be apparent to those skilled in the art that the description is intended to be illustrative and not limiting in scope. Various modifications and alterations of this utility model will occur to those skilled in the art in light of the spirit and principles of this utility model, and such modifications and alterations are also within the scope of this utility model.

Claims (9)

1. The novel concentrated belt filter press comprises a frame (1), a feeding device (6) and a discharging device (10), and is characterized in that a closed housing (4) is arranged outside the frame (1), and an exhaust port is formed in the closed housing (4); the machine frame (1) is internally provided with a concentration area (2) and a squeezing area (9), and the feeding device (6) extends into the closed housing (4) from the outer side wall and is communicated with the feeding position of the concentration area (2); the concentrating zone (2) is positioned above the pressing zone (9), and the inlet of the pressing zone (9) is positioned below the outlet of the concentrating zone (2); the discharging device (10) is positioned at the outlet of the pressing area (9), and the side wall of the closed housing (4) corresponding to the discharging device (10) is provided with an opening and is communicated with the outlet of the discharging device (10).

2. The novel concentrating belt filter press according to claim 1, wherein the concentrating zone (2) has a belt conveyor (12), the belt conveyor (12) being inclined with its end closer to the feed device (6) being lower than its end farther from the feed device (6).

3. The novel concentrated belt filter press according to claim 2, wherein the press zone (9) comprises a plurality of press rolls, an upper filter belt and a lower filter belt, the press rolls are arranged in a staggered manner from front to back and along a horizontal straight line, the press rolls are divided into a first press roll set (16) and a second press roll set (17) from front to back, the outer diameters of the press rolls in the first press roll set (16) are gradually reduced from front to back, and the outer diameters of the press rolls in the second press roll set (17) are equal; the upper filter belt and the lower filter belt sequentially bypass all the press rolls.

4. A novel concentrated belt filter press according to claim 3, characterized in that a first water collection sump (13) is provided below the belt conveyor (12) and a second water collection sump (14) is provided below the press roll stack.

5. The novel concentrating belt filter press according to claim 4, characterized in that the concentrating zone (2) has a first synchronous tensioning device for adjusting the tension of the conveyor belt of the belt conveyor (12); the pressing area (9) is provided with a second synchronous tensioning device for adjusting the tensioning force of the upper filter belt and the lower filter belt.

6. The novel concentrated belt filter press according to claim 5, wherein the concentrating zone (2) is provided with a first deviation rectifying and protecting device, and the first deviation rectifying and protecting device is used for rectifying when the conveyor belt of the belt conveyor (12) deviates; the squeezing area (9) is provided with a second deviation rectifying and protecting device which is used for rectifying the deviation of the upper and lower filter belts when the upper and lower filter belts deviate.

7. A novel concentrated belt filter press according to claim 6, characterized in that the concentrating zone (2) has a first flushing device for cleaning the conveyor belt of the belt conveyor (12), and the press zone (9) has a second flushing device for cleaning the conveyor belt and the upper and lower filter belts.

8. A novel concentrated belt filter press according to claim 7, characterized in that the closed housing (4) has a drive (11) comprising a first drive for powering the belt conveyor (12) and a second drive for powering the upper and lower belts.

9. The novel concentrating belt filter press according to claim 8, characterized in that a guide plate (15) is provided between the outlet of the concentrating zone (2) and the inlet of the pressing zone (9).