Slurry dehydration device for sewage treatment

Abstract

The utility model relates to the technical field of dehydrators, and discloses a slurry dehydration device for sewage treatment, which comprises a support frame, a dehydration cylinder, a rotating sleeve, a spiral conveyor and the like, a sliding rail is fixedly connected to the inner side wall of the right part of the dehydration cylinder, a sliding block is connected to the sliding rail in a sliding manner, and the spiral conveyor is arranged on the sliding block. A connecting rod is fixedly connected to the right side face of the sliding block, an extrusion plate is fixedly connected to the right end of the connecting rod, and a reciprocating screw is fixedly connected to the middle of the right end face of the spiral conveyor. Sludge is extruded by the spiral conveyor, so that the sludge is discharged through the through hole in the middle of the sliding block and then is discharged through the gap between the extrusion plate and the inner side wall of the dewatering cylinder, and at the moment, the spiral conveyor rotates to drive the reciprocating screw rod to rotate, so that the reciprocating screw rod drives the extrusion plate to slide in a reciprocating manner; therefore, the discharge port of the dewatering cylinder is dredged, and the sludge blocks are prevented from blocking the dewatering machine.

Description

Technical Field

[0001] The utility model relates to the technical field of dehydrators, in particular to a mud dehydrating device for sewage treatment. Background Art

[0002] Mud dewatering refers to a sludge treatment method that removes moisture from flowing primary, concentrated or digested sludge and converts it into semi-solid or solid mud blocks. After dehydration, the moisture content of the sludge can be reduced to 55% to 80%, depending on the properties of the sludge and sediment and the efficiency of the dewatering equipment. Further dehydration of the sludge is called sludge drying. The moisture content of dried sludge is less than 10%. The dehydration of mud is inseparable from the addition of a dehydrator. The dehydrator mainly uses the principle of centrifugal sedimentation for dehydration, and then discharges the dehydrated sludge through a screw conveyor.

[0003] During use, the existing mud dewatering machine is not only affected by the centrifugal force but also squeezed by the screw conveyor. During the squeezing process, the dehydrated sludge will form sludge blocks. Since the sludge blocks still contain water and have a certain viscosity, the sludge blocks are easily stuck at the discharge port of the dewatering machine after being squeezed, causing blockage of the dewatering machine. Moreover, when the mud is centrifugally dewatered, part of the sludge will adhere to the side wall of the rotating sleeve due to the centrifugal force, making it difficult to clean. Utility Model Content

[0004] In view of the shortcomings of existing dewatering machines, the utility model provides a mud dewatering device for sewage treatment, which has the advantages of preventing sludge blocks from clogging the discharge outlet of the dewatering machine and avoiding mud from adhering to the inner wall of the rotating sleeve, thereby improving the dewatering effect and solving technical problems such as dewatering machine blockage.

[0005] The utility model provides the following technical solution: a slurry dewatering device for sewage treatment, comprising a support frame, and also comprising:

[0006] A fixed plate is fixedly mounted on the top surface of the support frame, a fixed cylinder is fixedly mounted in the middle of the top surface of the fixed plate, a motor is fixedly mounted in the middle of the left end surface of the fixed cylinder, a rotating shaft is fixedly connected to the output end of the motor, a limiting plate is fixedly connected to the inner cavity side wall of the fixed cylinder, and a dehydration cylinder is fixedly sleeved in the middle of the limiting plate;

[0007] A rotating sleeve is rotatably sleeved on the outer surface of the left end of the dehydration cylinder, the rotating sleeve is fixedly sleeved with a rotating shaft, the rotating shaft is located on the outer surface of the dehydration cylinder and is fixedly sleeved with a screw conveyor, a feed pipe is fixedly installed on the top surface of the dehydration cylinder on the right side of the rotating sleeve, and a feed hopper is fixedly installed on the top end of the feed pipe extending out of the support frame.

[0008] Preferably, the dehydration cylinder comprises:

[0009] A slide rail fixedly connected to the inner wall of the right part of the dehydration cylinder;

[0010] A sliding block is slidably connected to the slide rail, a through hole is provided in the middle of the sliding block, and an outer surface of the sliding block is in sliding contact with an inner side wall of the right part of the dehydration cylinder.

[0011] Preferably, the sliding block includes:

[0012] A connecting rod, fixedly connected to the right side surface of the sliding block;

[0013] An extrusion plate, fixedly connected to the right end of the connecting rod;

[0014] The reciprocating screw is fixedly connected to the middle part of the right end surface of the screw conveyor, and the reciprocating screw is threadedly sleeved with the extrusion plate.

[0015] Preferably, the dehydration cylinder further comprises:

[0016] A fixing ring fixedly connected to the inner wall of the left part of the dehydration cylinder;

[0017] A mounting rod, fixedly connected to the left side surface of the fixing ring;

[0018] The scraper is fixedly sleeved on the outer surface of the mounting rod, and the side edge of the scraper is in contact with the inner side wall of the rotating sleeve.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. By designing a reciprocating screw, a slide rail, a sliding block, a connecting rod and an extrusion plate, when the screw conveyor discharges the dehydrated sludge, the screw conveyor squeezes the sludge so that the sludge is discharged through the through hole in the middle of the sliding block, and then discharged through the gap between the extrusion plate and the inner wall of the dehydration cylinder. At this time, the rotation of the screw conveyor drives the reciprocating screw to rotate, so that the reciprocating screw drives the extrusion plate to slide back and forth, thereby clearing the discharge port of the dehydration cylinder to prevent the sludge block from clogging the dehydrator. Moreover, since the gap between the extrusion plate and the inner wall of the dehydration cylinder is smaller than the discharge port of the dehydration cylinder, the sludge is squeezed by the extrusion plate again during the discharge process, thereby prompting the moisture inside the sludge to be further squeezed out and discharged, thereby improving the dehydration efficiency.

[0021] 2. By designing a fixed ring, a mounting rod and a scraper, and fixing the fixed ring on the left wall of the dewatering cylinder, since the dewatering cylinder is fixed during operation, and the rotating sleeve is always in a rotating state, the mounting rod and the scraper on the fixed ring are also in a fixed state, which makes the scraper and the rotating sleeve in a relative motion state. The scraper is used to scrape off the sludge adhered to the inner wall of the rotating sleeve, effectively preventing the sludge from adhering to the inner wall of the rotating sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the fixed cylinder of the utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the dehydration cylinder of the utility model;

[0025] Figure 4 It is a schematic diagram of the internal structure of the rotating sleeve of the utility model.

[0026] In the figure: 1. support frame; 2. fixed plate; 3. fixed cylinder; 4. motor; 5. rotating shaft; 6. limit plate; 7. dehydration cylinder; 71. slide rail; 72. sliding block; 73. connecting rod; 74. extrusion plate; 75. fixing ring; 76. mounting rod; 77. scraper; 8. rotating sleeve; 9. screw conveyor; 91. reciprocating screw; 10. feed pipe; 11. feed hopper. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 4A mud dewatering device for sewage treatment comprises a support frame 1, a fixed plate 2 is fixedly installed on the top surface of the support frame 1, a fixed cylinder 3 is fixedly installed in the middle of the top surface of the fixed plate 2, a motor 4 is fixedly installed in the middle of the left end surface of the fixed cylinder 3, a rotating shaft 5 is fixedly welded on the output end of the motor 4, a limiting plate 6 is fixedly welded on the inner cavity side wall of the fixed cylinder 3, a dewatering cylinder 7 is fixedly sleeved in the middle of the limiting plate 6, a rotating sleeve 8 is rotatably sleeved on the outer surface of the left end of the dewatering cylinder 7, the rotating sleeve 8 is fixedly sleeved with the rotating shaft 5, and the rotating sleeve 8 is fixedly sleeved with the rotating shaft 5 to ensure that the dewatering cylinder 7 is always in a fixed state and the rotating sleeve 8 will be driven to rotate by the rotating shaft 5, thereby utilizing centrifugal force to promote mud dehydration, a screw conveyor 9 is fixedly sleeved on the outer surface of the rotating shaft 5 located on the dewatering cylinder 7, and the dewatered sludge is transported and discharged through the screw conveyor 9, a feed pipe 10 is fixedly installed on the top surface of the dewatering cylinder 7 located on the right side of the rotating sleeve 8, and a feed hopper 11 is fixedly installed on the top of the feed pipe 10 extending out of the support frame 1.

[0029] See also Figure 1-Figure 4 A slide rail 71 is fixedly welded on the inner wall of the right part of the dehydration cylinder 7, and a slide block 72 is slidably connected to the slide rail 71 to facilitate the sliding of the slide block 72 on the slide rail 71. A through hole is opened in the middle of the slide block 72 for discharging sludge, and the outer surface of the slide block 72 is in sliding contact with the inner wall of the right part of the dehydration cylinder 7.

[0030] See also Figure 1-Figure 4 A connecting rod 73 is fixedly welded to the right side of the sliding block 72, and an extrusion plate 74 is fixedly welded to the right end of the connecting rod 73 to ensure that the sludge can be squeezed by the extrusion plate 74 after being discharged through the through hole on the sliding block 72, so that the moisture inside the sludge can be squeezed and discharged as much as possible. A reciprocating screw 91 is fixedly welded to the middle of the right end face of the screw conveyor 9, and the reciprocating screw 91 and the extrusion plate 74 are threadedly connected, so that the reciprocating screw 91 can be driven to rotate when the screw conveyor 9 rotates, thereby utilizing the spiral connection between the reciprocating screw 91 and the extrusion plate 74 to make the extrusion plate 74 slide back and forth and clear the discharge port on the dehydration cylinder 7.

[0031] See also Figure 1-Figure 4 A fixing ring 75 is fixedly welded on the inner wall of the left part of the dehydration cylinder 7, a mounting rod 76 is fixedly welded on the left side surface of the fixing ring 75, a scraper 77 is fixedly sleeved on the outer surface of the mounting rod 76, and the side edge of the scraper 77 contacts the inner wall of the rotating sleeve 8, so that the scraper 77 can scrape off the mud adhering to the inner wall of the rotating sleeve 8.

[0032] Working principle: When the mud needs to be dehydrated, the motor 4 is turned on, the motor 4 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the rotating sleeve 8 and the screw conveyor 9 to rotate, and then the mud is introduced into the rotating sleeve 8 through the feed hopper 11 and the feed pipe 10, and the mud is dehydrated by the action of centrifugal force. The dehydrated sludge will be transported and discharged by the rotating screw conveyor 9. In this process, the sludge is squeezed by the screw conveyor 9, so that the sludge is discharged through the through hole in the middle of the sliding block 72, and then discharged through the gap between the squeezing plate 74 and the inner wall of the dehydration cylinder 7. At this time, the rotation of the screw conveyor 9 is used to drive the reciprocating screw 91 to rotate, so that the reciprocating screw 91 will drive the squeezing plate 74 to slide back and forth, thereby clearing the discharge port of the dehydration cylinder 7 to prevent the sludge block from hitting the dehydrator The sludge is squeezed by the squeezing plate 74 again during the discharge process, thereby further squeezing out the water inside the sludge and improving the dehydration efficiency. At the same time, the fixing ring 75 is fixedly installed on the left side wall of the dehydrating cylinder 7. During the operation of the dehydrating machine, the dehydrating cylinder 7 is fixed, and the rotating sleeve 8 is always in a rotating state. At this time, the mounting rod 76 and the scraper 77 on the fixing ring 75 are also in a fixed state, which makes the scraper 77 and the rotating sleeve 8 in a relative motion state. The scraper 77 is used to scrape off the sludge adhered to the inner wall of the rotating sleeve 8, effectively avoiding the sludge from adhering to the inner wall of the rotating sleeve 8.

Claims

1. A sludge dewatering device for sewage treatment, comprising a support frame (1), characterized in that: Also includes: A fixed plate (2) is fixedly mounted on the top surface of the support frame (1); a fixed cylinder (3) is fixedly mounted in the middle of the top surface of the fixed plate (2); a motor (4) is fixedly mounted in the middle of the left end surface of the fixed cylinder (3); a rotating shaft (5) is fixedly connected to the output end of the motor (4); a limiting plate (6) is fixedly connected to the side wall of the inner cavity of the fixed cylinder (3); a dehydration cylinder (7) is fixedly sleeved in the middle of the limiting plate (6); A rotating sleeve (8) is rotatably sleeved on the outer surface of the left end of the dehydration cylinder (7); the rotating sleeve (8) is fixedly sleeved with the rotating shaft (5); a screw conveyor (9) is fixedly sleeved on the outer surface of the dehydration cylinder (7); a feed pipe (10) is fixedly installed on the top surface of the dehydration cylinder (7) located on the right side of the rotating sleeve (8); a feed hopper (11) is fixedly installed on the top of the feed pipe (10) extending out of the support frame (1).

2. A sludge dewatering device for sewage treatment according to claim 1, characterized in that: The dehydration cylinder (7) comprises: A slide rail (71) is fixedly connected to the inner side wall of the right part of the dehydration cylinder (7); The sliding block (72) is slidably connected to the sliding rail (71), a through hole is opened in the middle of the sliding block (72), and the outer surface of the sliding block (72) is in sliding contact with the inner side wall of the right part of the dehydration cylinder (7).

3. A sludge dewatering device for sewage treatment according to claim 2, characterized in that: The sliding block (72) comprises: A connecting rod (73) fixedly connected to the right side surface of the sliding block (72); An extrusion plate (74) is fixedly connected to the right end of the connecting rod (73); A reciprocating screw rod (91) is fixedly connected to the middle portion of the right end surface of the screw conveyor (9), and the reciprocating screw rod (91) is threadedly sleeved with the extrusion plate (74).

4. A sludge dewatering device for sewage treatment according to claim 3, characterized in that: The dehydration cylinder (7) also includes: A fixing ring (75) fixedly connected to the inner side wall of the left part of the dehydration cylinder (7); A mounting rod (76) fixedly connected to the left side surface of the fixing ring (75); The scraper (77) is fixedly sleeved on the outer surface of the mounting rod (76), and the side edge of the scraper (77) is in contact with the inner wall of the rotating sleeve (8).

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