CN218951218U - Negative pressure sludge treatment machine - Google Patents
Negative pressure sludge treatment machine Download PDFInfo
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- CN218951218U CN218951218U CN202222876454.8U CN202222876454U CN218951218U CN 218951218 U CN218951218 U CN 218951218U CN 202222876454 U CN202222876454 U CN 202222876454U CN 218951218 U CN218951218 U CN 218951218U
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Abstract
The utility model aims to provide a negative pressure sludge treatment machine which comprises a machine base, a driving mechanism, a conveying bin, a squeezing bin, a rotating shaft, a conveying spiral blade, a screen cylinder and a squeezing spiral blade assembly, wherein the machine base is provided with a rotary shaft; the top surface of the machine seat is sequentially provided with a conveying bin and a squeezing bin along the left-to-right direction, and the top of the conveying bin is provided with a feed inlet; the discharge hole of the squeezing bin is arranged on the right side of the squeezing bin, and a sealing cover is arranged on the discharge hole; the left end or the right end of the rotating shaft is connected with the driving mechanism through a transmission device; a conveying helical blade is arranged on a rotating shaft positioned in the conveying bin, and a squeezing helical blade assembly is arranged on the rotating shaft positioned in the squeezing bin; the screen cylinder is in clearance fit with the pressing spiral blade assembly; the bottom of the squeezing bin is provided with an interface which is connected with the squeezing bin through a pipeline; an air inlet pipe is arranged at the upper part or the middle part of the conveying bin and is communicated with the atmosphere. The utility model has scientific and reasonable structural design, low maintenance cost, high treatment efficiency and good dehydration effect.
Description
Technical Field
The utility model relates to the field of sludge treatment equipment, in particular to a negative pressure sludge treatment machine.
Background
Sludge dewatering refers to a sludge treatment method for removing water from raw, concentrated or digested sludge in a fluid state and converting the sludge into semisolid or solid sludge blocks. After dewatering, the water content of the sludge can be reduced to fifty-five percent to eighty percent, depending on the nature of the sludge and the efficiency of the dewatering equipment. Further dehydration of the sludge is called sludge drying, and the water content of the dried sludge is lower than ten percent. The dehydration method mainly comprises a natural drying method, a mechanical dehydration method and a granulation method. The natural drying method and the mechanical dehydration method are suitable for sewage sludge. The granulation method is suitable for coagulating sedimentation of sludge.
Currently, mechanical dewatering methods include filtration and centrifugation. The sludge is pretreated first, and dewatered after the dewatering performance is improved. The most common pretreatment method is to add inorganic salt or polymer coagulant and then carry out dehydration treatment.
The filtration is to filter wet sludge with a filter layer (porous material such as filter cloth, wire mesh) to allow water (filtrate) to permeate the filter layer, and dewatered sludge (filter cake) is trapped on the filter layer. The centrifugal method is to separate mud from water by means of different centrifugal tendencies generated by the specific gravity difference of solid and liquid in the sludge. The equipment used in the filtration method comprises a vacuum filter, a plate-and-frame filter press, a belt filter, a screw press and the like.
The screw squeezer is one kind of sewage blocking grille and consists of feeding bin, squeezing screw, spiral pipe, slag discharging pipe and driving unit. The grating slag or filtered filter slag from the grating enters the spiral pipe from the feed hopper, and is extruded and dehydrated under the action of the pressing spiral. The water extruded from the materials is gathered to the water receiving basin through the filter screen and discharged through the drain pipe, and the materials are discharged through the slag discharging pipe after being compressed.
The screw press of the prior art has higher working efficiency, but when the screw press works, sludge is easy to adhere between blades to block a press conveying pipeline, thereby causing shutdown and affecting production efficiency.
Disclosure of Invention
The utility model aims to provide a negative pressure type sludge treatment machine which is scientific and reasonable in structural design, low in maintenance cost, high in treatment efficiency and good in dehydration effect by utilizing the cooperation of vacuum and a screw press.
The negative pressure type sludge treatment machine comprises a machine base, a driving mechanism, a conveying bin, a squeezing bin, a rotating shaft, conveying spiral blades, a screen cylinder and a squeezing spiral blade assembly;
the top surface of the machine seat is sequentially provided with a conveying bin and a squeezing bin along the left-to-right direction, the left side of the conveying bin is provided with a conveying outlet, the left side of the squeezing bin is provided with a squeezing inlet, and the conveying outlet of the conveying bin is in sealing connection with the squeezing inlet of the squeezing bin; the top of the conveying bin is provided with a feed inlet; the discharge hole of the squeezing bin is arranged on the right side wall of the squeezing bin, a sealing cover is arranged on the discharge hole, and the sealing cover covers the discharge hole under the elastic action of the elastic mechanism;
the rotating shaft enters from the left side wall of the conveying bin, passes through the conveying bin and the squeezing bin, passes through the discharging hole of the squeezing bin and passes through the sealing cover, and the joint of the rotating shaft, the conveying bin and the sealing cover is sealed; the left end or the right end of the rotating shaft is driven by the driving mechanism through a transmission device and the driving mechanism, and the rotating shaft can rotate relative to the conveying bin and the squeezing bin;
a conveying helical blade is arranged on a rotating shaft positioned in the conveying bin, and a squeezing helical blade assembly is arranged on the rotating shaft positioned in the squeezing bin; the conveying direction of the conveying spiral blade and the conveying direction of the pressing spiral blade assembly are from left to right; the screen cylinder is arranged in the squeezing bin, the left end of the screen cylinder is arranged on the left inner wall of the squeezing bin and covers the inlet of the squeezing bin, and the right end of the screen cylinder is arranged on the right inner wall of the squeezing bin and covers the outlet of the squeezing bin; the screen cylinder is in clearance fit with the pressing spiral blade assembly;
the bottom of the squeezing bin is provided with a vacuum interface, and the vacuum interface is connected with an external vacuum pump through a pipeline; the upper part or the middle part of the squeezing bin is provided with an air inlet pipe which is communicated with the atmosphere.
The squeezing bin is internally provided with an air inlet cover, the front end of the air inlet cover is fixedly arranged at the top of the front part or the middle part of the screen cylinder, the air inlet cover covers the front part and the upper half part of the middle part of the screen cylinder, the front part or the middle part of the air inlet cover is provided with an air inlet, and the outlet end of the air inlet pipe is connected with the air inlet.
The squeezing screw blade assembly comprises a dewatering screw blade and a squeezing screw blade, wherein the dewatering screw blade is arranged on the left side of the squeezing bin, the squeezing screw blade is arranged on the right side of the squeezing bin, the right end of the dewatering screw blade is connected with the left end of the squeezing screw blade, and a gap is reserved between the right end of the squeezing screw blade and the inner wall of the right side of the squeezing bin.
The pitch of the conveying screw blade is larger than that of the dewatering screw blade, and the pitch of the dewatering screw blade is larger than that of the pressing screw blade.
The elastic mechanism comprises a support plate and a spring, wherein the support plate is arranged on the right side of the squeezing bin, a distance is reserved between the support plate and a discharge hole of the squeezing bin, and the support plate and the bottom surface of the discharge hole of the squeezing bin are left as a discharge channel; the right end of the rotating shaft is arranged on the support plate through a bearing, the rotating shafts positioned on the support plate and the sealing cover are sleeved with springs, and the springs give pressure to the sealing cover in a natural state so that the sealing cover covers the discharge hole.
The negative pressure sludge treatment machine further comprises a spring adjusting nut, a thread sleeve is arranged on the inner wall of the left side of the support plate, the thread sleeve is sleeved on the rotating shaft in a clearance fit manner, and the spring adjusting nut is arranged on the thread sleeve in a thread fit manner; the outer diameter of the spring is smaller than that of the spring adjusting nut, and the right end of the spring is contacted with the left end of the spring adjusting nut.
The top of the squeezing bin is provided with a sealing cover.
The joint of the conveying bin and the sealing cover and the rotating shaft is respectively provided with a shaft hole, and a sealing ring is arranged in the shaft hole; the driving mechanism is a gear motor, and the transmission mechanism is a belt pulley transmission mechanism.
The negative pressure sludge treatment machine also comprises a feed hopper, wherein the feed hopper is arranged at the top of the conveying bin, the top of the feed hopper is of an opening structure, and a feed pipe connected with the feed inlet is arranged at the bottom of the feed hopper.
The negative pressure type sludge treatment machine also comprises a vibrating screen, wherein the vibrating screen is arranged above the feed hopper through a bracket, a connecting port is arranged on an outlet at the bottom of the vibrating screen, the connecting port is positioned right above the feed hopper, and a screen is arranged at the connecting port.
The working process of the utility model is as follows: starting a vacuum pump to enable the squeezing bin and the conveying bin to be in a negative pressure state, driving the conveying helical blade, the dewatering helical blade and the squeezing helical blade to rotate by a rotating shaft under the drive of a reducing motor, starting a vibrating screen to convey sludge into a feeding hopper after passing through a screen, enabling the sludge and air to enter the conveying bin through the feeding hopper, conveying the sludge and air into the squeezing bin through the conveying helical blade, dehydrating the sludge and the air through the dewatering helical blade with smaller screw pitch, and squeezing the sludge and the air through the squeezing helical blade with smaller screw pitch; in the squeezing bin, air flows from top to bottom through an air inlet pipe and is given with air pressure and wind power to ensure that the sludge is enriched below the water spiral blades and the squeezing spiral blades and is dehydrated at the same time; the sludge enters the right space of the pressing spiral blade, is piled up to press the cover plate, is further dehydrated, and when the pressing force is larger than the elastic force of the spring on the cover plate, the cover plate is opened, the dehydrated sludge is discharged from the discharge hole and falls down and is discharged through the discharge channel.
The utility model maintains the advantages of low maintenance cost and high efficiency of a spiral squeezing mode, combines a negative pressure mode, namely, a vacuum port is arranged at the bottom of a squeezing bin, negative pressure is extracted, sludge and air enter the conveying bin from a feed hopper through a conveying bin, the problems of accelerating dehydration and reducing viscosity are solved under the action of high-speed air flow, and meanwhile, the movement direction of the sludge is changed into downward radial movement to reduce fluidity, so that the sludge is prevented from flowing backwards under the action of spiral propelling force; the other path of air enters from the air inlet cover, downward air pressure is given to the sludge, rapid dehydration is solved, meanwhile, the sludge is gathered towards the lower part of the screen cylinder, the air pressure forms radial direction to accelerate dehydration, the viscosity is reduced, the fluidity is reduced, the sludge is prevented from sticking to the spiral and flowing backwards under the action of spiral propelling force, and the problems that the sludge is easy to stick between blades, blocks a squeezing conveying pipeline and the like are well avoided.
Drawings
FIG. 1 is a schematic view of the negative pressure type sludge treatment machine of example 1;
the numbers and designations in the figures are as follows:
the device comprises a machine seat, a 2-conveying bin, a 3-squeezing bin, a 4-rotating shaft, a 5-conveying helical blade, a 6-screen barrel, a 7-speed reducing motor, an 8-feed inlet, a 9-discharge outlet, a 10-sealing cover, an 11-vacuum interface, a 12-air inlet pipe, a 13-air inlet cover, a 14-dewatering helical blade, a 15-squeezing helical blade, a 16-support plate, a 17-spring, a 18-spring adjusting nut, a 19-threaded sleeve, a 20-sealing cover, a 21-feed hopper, a 22-feed pipe, a 23-vibrating screen, a 24-support, a 25-connecting port and a 26-screen.
Detailed Description
The utility model is described in detail below with reference to the drawings and examples.
As shown in FIG. 1, the negative pressure sludge treatment machine comprises a machine base 1, a driving mechanism, a conveying bin 2, a squeezing bin 3, a rotating shaft 4, conveying helical blades 5, a screen cylinder 6 and a squeezing helical blade assembly;
the top surface of the machine base 1 is sequentially provided with a conveying bin 2 and a squeezing bin 3 along the left-to-right direction, the left side of the conveying bin 2 is provided with a conveying outlet, the left side of the squeezing bin 3 is provided with a squeezing inlet, and the conveying outlet of the conveying bin 2 is in sealing connection with the squeezing inlet of the squeezing bin 3; the top of the conveying bin 2 is provided with a feed inlet 8; the discharge hole 9 of the squeezing bin 3 is arranged on the right side wall of the squeezing bin, a sealing cover 10 is arranged on the discharge hole, and the sealing cover 10 covers the discharge hole 9 under the elastic action of an elastic mechanism;
the rotating shaft 4 enters from the left side wall of the conveying bin 2, passes through the conveying bin 2 and the squeezing bin 3, passes through the discharge port 9 of the squeezing bin 3 and passes through the sealing cover 10, and the joint of the rotating shaft 4, the conveying bin 2 and the sealing cover 10 is sealed; the left end or the right end of the rotating shaft 4 is driven by the driving mechanism through a transmission device and the driving mechanism, and the rotating shaft 4 can rotate relative to the conveying bin 2 and the squeezing bin 3;
a conveying helical blade 5 is arranged on a rotating shaft 4 positioned in the conveying bin 2, and a pressing helical blade assembly is arranged on the rotating shaft 4 positioned in the pressing bin 3; the conveying direction of the conveying helical blade 5 and the conveying direction of the pressing helical blade assembly are from left to right; the screen cylinder 6 is arranged in the squeezing bin 3, the left end of the screen cylinder 6 is arranged on the inner wall of the left side of the squeezing bin 3 to cover the inlet of the squeezing bin 3, and the right end of the screen cylinder 6 is arranged on the inner wall of the right side of the squeezing bin 3 to cover the outlet of the squeezing bin 3; the screen cylinder 6 is in clearance fit with the pressing spiral blade assembly;
the bottom of the squeezing bin 3 is provided with a vacuum interface 11, and the vacuum interface 11 is connected with an external vacuum pump through a pipeline; an air inlet pipe 12 is arranged at the upper part or the middle part of the squeezing bin 3, and the air inlet pipe 12 is communicated with the atmosphere.
The squeezing bin 3 is internally provided with an air inlet cover 13, the front end of the air inlet cover 13 is fixedly arranged at the top of the front part or the middle part of the screen cylinder 6, the air inlet cover 13 covers the front part and the upper half part of the middle part of the screen cylinder 6, the front part or the middle part of the air inlet cover 13 is provided with an air inlet, and the outlet end of the air inlet pipe 12 is connected with the air inlet.
The squeezing screw blade assembly comprises a dewatering screw blade 14 and a squeezing screw blade 15, wherein the dewatering screw blade 14 is arranged on the left side of the squeezing bin 3, the squeezing screw blade 15 is arranged on the right side of the squeezing bin 3, the right end of the dewatering screw blade 14 is connected with the left end of the squeezing screw blade 15, and a space is reserved between the right end of the squeezing screw blade 15 and the inner wall of the right side of the squeezing bin 3.
The pitch of the conveying screw 5 is greater than the pitch of the dewatering screw 14, and the pitch of the dewatering screw 14 is greater than the pitch of the press screw 15.
The elastic mechanism comprises a support plate 16 and a spring 17, wherein the support plate 16 is arranged on the right side of the squeezing bin 3, a distance is reserved between the support plate 16 and a discharge hole 9 of the squeezing bin 3, and the support plate 16 and the bottom surface of the discharge hole 9 of the squeezing bin 3 are left as a discharge channel; the right end of the rotating shaft 4 is arranged on the support plate 16 through a bearing, a spring 17 is sleeved on the support plate 16 and the rotating shaft 4 of the sealing cover 10, and in a natural state, the spring 17 gives pressure to the sealing cover 10 to enable the sealing cover to cover the discharge hole.
The negative pressure sludge treatment machine further comprises a spring adjusting nut 18, a threaded sleeve 19 is arranged on the inner wall of the left side of the support plate 16, the threaded sleeve 19 is sleeved on the rotating shaft 4 in a clearance fit manner, and the spring adjusting nut 18 is arranged on the threaded sleeve 19 in a threaded fit manner; the outer diameter of the spring 17 is smaller than that of the spring adjusting nut 18, and the right end of the spring 17 is in contact with the left end of the spring adjusting nut 18.
The top of the squeezing bin 3 is provided with a sealing cover 20.
The joint of the conveying bin 2 and the sealing cover 10 and the rotating shaft 4 is respectively provided with a shaft hole, and a sealing ring is arranged in the shaft hole; the driving mechanism is a gear motor 7, and the transmission mechanism is a belt pulley transmission mechanism.
The negative pressure sludge treatment machine also comprises a feed hopper 21, wherein the feed hopper 21 is arranged at the top of the conveying bin 2, the top of the feed hopper 21 is of an opening structure, and a feed pipe 22 connected with the feed inlet 8 is arranged at the bottom of the feed hopper 21.
The negative pressure sludge treatment machine also comprises a vibrating screen 23, wherein the vibrating screen 23 is arranged above the feed hopper 21 through a bracket 24, a connecting port 25 is arranged on an outlet at the bottom of the vibrating screen 23, the connecting port 25 is positioned right above the feed hopper 21, and a screen 26 is arranged at the connecting port 25.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", "front", "rear", and the like are orientation or positional relationships based on those shown in fig. 1, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.
Claims (10)
1. The utility model provides a negative pressure formula sludge treatment machine, includes frame (1), actuating mechanism, transport storehouse (2), squeezes storehouse (3), axis of rotation (4), carries helical blade (5), screen cloth section of thick bamboo (6), squeezes helical blade assembly, its characterized in that:
the top surface of the machine base (1) is sequentially provided with a conveying bin (2) and a squeezing bin (3) along the left-to-right direction, the left side of the conveying bin (2) is provided with a conveying outlet, the left side of the squeezing bin (3) is provided with a squeezing inlet, and the conveying outlet of the conveying bin (2) is in sealing connection with the squeezing inlet of the squeezing bin (3); the top of the conveying bin (2) is provided with a feed inlet (8); the discharging hole (9) of the squeezing bin (3) is arranged on the right side wall of the squeezing bin, a sealing cover (10) is arranged on the discharging hole, and the sealing cover (10) covers the discharging hole (9) under the elastic action of an elastic mechanism;
the rotary shaft (4) enters from the left side wall of the conveying bin (2), passes through the conveying bin (2) and the squeezing bin (3), passes through the discharge port (9) of the squeezing bin (3) and passes through the sealing cover (10), and the joint of the rotary shaft (4) and the conveying bin (2) and the sealing cover (10) is sealed; the left end or the right end of the rotating shaft (4) is connected with a driving mechanism through a transmission device, and the rotating shaft (4) can rotate relative to the conveying bin (2) and the squeezing bin (3) under the driving of the driving mechanism;
a conveying helical blade (5) is arranged on a rotating shaft (4) positioned in the conveying bin (2), and a squeezing helical blade assembly is arranged on the rotating shaft (4) positioned in the squeezing bin (3); the conveying direction of the conveying spiral blade (5) and the conveying direction of the pressing spiral blade assembly are from left to right; the screen cylinder (6) is arranged in the squeezing bin (3), the left end of the screen cylinder (6) is arranged on the left inner wall of the squeezing bin (3) to cover the inlet of the squeezing bin (3), and the right end of the screen cylinder (6) is arranged on the right inner wall of the squeezing bin (3) to cover the outlet of the squeezing bin (3); the screen cylinder (6) is in clearance fit with the pressing spiral blade assembly;
the bottom of the squeezing bin (3) is provided with a vacuum interface (11), and the vacuum interface (11) is connected with an external vacuum pump through a pipeline; an air inlet pipe (12) is arranged at the upper part or the middle part of the squeezing bin (3), and the air inlet pipe (12) is communicated with the atmosphere.
2. The negative pressure sludge treatment machine of claim 1 wherein: the squeezing bin (3) in be equipped with air inlet cover (13), the front end fixed mounting of air inlet cover (13) in the front portion or the middle part top of screen cloth section of thick bamboo (6), air inlet cover (13) cover the front portion and the upper half in middle part of screen cloth section of thick bamboo (6), the front portion or the middle part of air inlet cover (13) are equipped with the air inlet, the exit end and the air inlet of intake pipe (12) be connected.
3. The negative pressure sludge treatment machine of claim 1 wherein: the squeezing spiral blade assembly comprises a dewatering spiral blade (14) and a squeezing spiral blade (15), wherein the dewatering spiral blade (14) is arranged on the left side of the squeezing bin (3), the squeezing spiral blade (15) is arranged on the right side of the squeezing bin (3), the right end of the dewatering spiral blade (14) is connected with the left end of the squeezing spiral blade (15), and a space is reserved between the right end of the squeezing spiral blade (15) and the inner wall of the right side of the squeezing bin (3).
4. The negative pressure sludge treatment machine of claim 1 wherein: the pitch of the conveying screw blade (5) is larger than that of the dewatering screw blade (14), and the pitch of the dewatering screw blade (14) is larger than that of the pressing screw blade (15).
5. The negative pressure sludge treatment machine of claim 1 wherein: the elastic mechanism comprises a support plate (16) and a spring (17), wherein the support plate (16) is arranged on the right side of the squeezing bin (3), a distance is reserved between the support plate (16) and a discharge hole (9) of the squeezing bin (3), and the support plate (16) and the bottom surface of the discharge hole (9) of the squeezing bin (3) are left to serve as a discharge channel; the right end of the rotating shaft (4) is arranged on the support plate (16) through a bearing, the rotating shaft (4) positioned on the support plate (16) and the sealing cover (10) is sleeved with a spring (17), and in a natural state, the spring (17) gives pressure to the sealing cover (10) to enable the sealing cover to cover a discharge hole.
6. The negative pressure sludge treatment machine of claim 5 wherein: the spring adjusting device is characterized by further comprising a spring adjusting nut (18), wherein a thread sleeve (19) is arranged on the left inner wall of the support plate (16), the thread sleeve (19) is sleeved on the rotating shaft (4) in a clearance fit manner, and the spring adjusting nut (18) is arranged on the thread sleeve (19) in a thread fit manner; the outer diameter of the spring (17) is smaller than that of the spring adjusting nut (18), and the right end of the spring (17) is in contact with the left end of the spring adjusting nut (18).
7. The negative pressure sludge treatment machine of claim 1 wherein: the top of the squeezing bin (3) is provided with a sealing cover (20).
8. The negative pressure sludge treatment machine of claim 1 wherein: the joint of the conveying bin (2) and the sealing cover (10) and the rotating shaft (4) is respectively provided with a shaft hole, and a sealing ring is arranged in the shaft hole; the driving mechanism is a gear motor (7), and the transmission mechanism is a belt pulley transmission mechanism.
9. The negative pressure sludge treatment machine of claim 1 wherein: still include feeder hopper (21), feeder hopper (21) install in conveying storehouse (2) top, the top of feeder hopper (21) is open structure, its bottom is equipped with conveying pipe (22) that are connected with feed inlet (8).
10. The negative pressure sludge treatment machine of claim 9 wherein: still include shale shaker (23), shale shaker (23) install in feeder hopper (21) top through support (24), be equipped with connector (25) on the export of shale shaker (23) bottom, connector (25) be located feeder hopper (21) directly over, connector (25) department is equipped with screen cloth (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222876454.8U CN218951218U (en) | 2022-10-31 | 2022-10-31 | Negative pressure sludge treatment machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222876454.8U CN218951218U (en) | 2022-10-31 | 2022-10-31 | Negative pressure sludge treatment machine |
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| Publication Number | Publication Date |
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| CN218951218U true CN218951218U (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222876454.8U Active CN218951218U (en) | 2022-10-31 | 2022-10-31 | Negative pressure sludge treatment machine |
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| Country | Link |
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| CN (1) | CN218951218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117085859A (en) * | 2023-07-02 | 2023-11-21 | 沧州市华油飞达固控设备有限公司 | Negative pressure feeding vertical mud centrifugal separator |
-
2022
- 2022-10-31 CN CN202222876454.8U patent/CN218951218U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117085859A (en) * | 2023-07-02 | 2023-11-21 | 沧州市华油飞达固控设备有限公司 | Negative pressure feeding vertical mud centrifugal separator |
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