Dehydration device for sludge treatment

Abstract

The utility model relates to the field of sludge dewatering industry, in particular to a dewatering device for sludge treatment, which comprises a box body, a centrifugal dewatering assembly is fixedly connected to the interior of the box body; a scraper is slidably arranged on the inner wall of the dewatering barrel; a collecting box is movably arranged at the lower end of the centrifugal dewatering assembly; an extrusion block is movably arranged on the inner wall of the collection box; and a plurality of uniformly distributed second leaking holes are formed in the inner and outer walls of the collecting box in a penetrating manner. Solid-liquid separation of sludge is achieved through centrifugal force, meanwhile, the scraper is arranged and can be driven by the first electric cylinder to scrape off the sludge attached to the inner wall of the dewatering barrel to prevent the sludge from being blocked, the sludge subjected to preliminary dewatering falls into the collecting box through the opened butterfly valve, then the supporting plate is pushed to slide into the box body, and the sludge dewatering effect is improved. And a second electric cylinder is started to drive an extrusion block to carry out secondary extrusion on the sludge in the collection box, residual water in the sludge is extruded out, and the sludge dewatering treatment efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of sludge dehydration industry, and specifically relates to a dehydration device for sludge treatment. Background Art

[0002] In the sludge dewatering industry, sludge is the organic matter, microbial floccules and other sedimentation materials produced by sewage treatment plants during the sewage treatment process, as well as residues such as foam floating on the surface of sewage. If it is arbitrarily abandoned in mountain farmland or landfilled in an irregular manner, it will pose a huge potential threat to the ecological environment. Dewatering sludge can reduce its volume and weight, making it easier for subsequent processing and disposal.

[0003] In the prior art, conventional sludge dewatering devices usually use centrifugal dewatering, which mainly uses centrifugal force instead of gravity or pressure as the driving force to dewater the sludge. However, since the characteristics of sludge are often different, only using a single centrifugal dewatering method will result in poor dewatering effect. At the same time, after dehydration, the sludge is easy to adhere to the inner wall of the centrifugal dewatering barrel and cause blockage, which further reduces the dewatering efficiency.

[0004] Therefore, a dewatering device for sludge treatment is proposed, which combines centrifugal dewatering and pressing dewatering, is suitable for dewatering operations of sludge with various characteristics, and can clean and collect the sludge attached to the inner wall of the centrifugal dewatering barrel, which helps to improve the dewatering efficiency. Utility Model Content

[0005] In order to overcome the problem of poor dehydration effect of conventional sludge dehydration equipment using a single dehydration method during sludge dehydration, and the sludge is easily attached to the inner wall of the centrifugal dehydration barrel after dehydration, causing blockage.

[0006] The technical solution of the utility model is: a dehydration device for sludge treatment, comprising a box body; a centrifugal dehydration component for preliminary dehydration is fixedly connected to the upper end surface of the box body; a collecting box for collecting sludge is movably provided at the lower end of the centrifugal dehydration component; guide rods are fixedly connected to the left and right ends of the box body; a first slider is slidably provided on the outer wall of the guide rod; a second connecting rod is commonly fixedly connected to one end of two first sliders close to each other; a supporting plate is fixedly connected to the rear end of the second connecting rod; a handle and a second electric cylinder are fixedly connected to the upper end of the supporting plate; an extrusion block is fixedly connected to the output shaft of the second electric cylinder through the supporting plate; the outer wall of the extrusion block is fitted with the inner wall of the collecting box; a plurality of second leakage holes evenly distributed are penetrated through the inner and outer walls of the collecting box; a filter cloth for filtering out moisture is movably provided on the inner wall of the collecting box.

[0007] Preferably, the sludge is passed into the interior of the dewatering barrel, the motor is started to drive the dewatering barrel to rotate at a high speed, and the centrifugal force is used to achieve solid-liquid separation of the sludge. At the same time, a scraper is provided, which can scrape off the sludge attached to the inner wall of the dewatering barrel under the drive of the first electric cylinder, thereby solving the problem that the sludge is easily attached to the inner wall of the centrifugal dewatering barrel and causes blockage after dehydration. The sludge after preliminary dehydration will fall into the collecting box through the opened butterfly valve, and the support plate is pushed to make it slide into the interior of the box. Then the second electric cylinder is started to drive the extrusion block to perform secondary extrusion on the sludge in the collecting box to squeeze out the residual water in the sludge, thereby solving the problem of poor dehydration effect of conventional sludge dewatering devices using a single dehydration method.

[0008] Preferably, a closed door is hinged at the upper left edge of the front end of the box; a feed pipe is installed through the upper end of the box; a waste liquid box is slidably arranged inside the box; through the setting of the closed door, the centrifugal dehydration component inside the box is in a closed state when working, which helps to prevent sewage from splashing and polluting the external environment. The setting of the waste liquid box helps to collect and treat sewage in a unified manner.

[0009] Preferably, the centrifugal dehydration component includes a motor, a first connecting rod, a dehydration barrel, a first leakage hole and a butterfly valve; the motor is fixedly connected to the upper end surface of the inner part of the box body; four first connecting rods evenly distributed in a circle are fixedly connected to the output shaft of the motor; the other ends of the four first connecting rods are commonly fixedly connected to the dehydration barrel; the upper and lower ends of the dehydration barrel are open; the inner and outer walls of the dehydration barrel are penetrated by a plurality of evenly distributed first leakage holes; the lower end of the dehydration barrel is fixedly connected to a butterfly valve; when the sludge enters the dehydration barrel through the feed pipe, the butterfly valve is closed to allow the sludge to accumulate in the dehydration barrel, and then the motor is started, the output shaft of the motor will drive the first connecting rod and the dehydration barrel to start synchronous rotation, and the sludge is separated into solid and liquid parts by the centrifugal force of high-speed rotation, the solid sludge will adhere to the inner wall of the dehydration barrel, and the liquid will be thrown out to the outside of the dehydration barrel through the first leakage hole, thereby achieving preliminary dehydration of the sludge.

[0010] Preferably, a first electric cylinder is fixedly connected to the upper end of the box body; the output shaft of the first electric cylinder passes through the upper end of the box body and is fixedly connected to a scraper; the scraper is a circular ring structure; the outer wall of the scraper fits with the inner wall of the dewatering barrel; by starting the first electric cylinder, the output shaft of the first electric cylinder will drive the scraper to move downward, scraping off the solid sludge attached to the inner wall of the dewatering barrel, solving the problem that the sludge is easily attached to the inner wall of the centrifugal dewatering barrel after dehydration and causing blockage, and at the same time, the butterfly valve is opened to allow this part of the sludge that has undergone preliminary dehydration to fall into the collection box under the action of gravity for subsequent treatment.

[0011] Preferably, a step is fixedly connected to the middle of the inner wall of the box body; an outlet pipe is fixedly connected to the four corner edges of the lower end of the step; the outlet pipe is connected to the internal space of the box body; the other end of the outlet pipe is located above the waste liquid box; mounting holes are opened through the upper and lower ends of the step; a sealing ring is fixedly connected to the inner wall of the mounting hole; the inner wall of the sealing ring fits with the outer wall of the butterfly valve; the design of the trapezoidal structure of the step can help to accumulate sewage and flow into the waste liquid box through the outlet pipe, and the setting of the sealing ring can help prevent sewage from falling into the collection box through the mounting hole.

[0012] Preferably, the rear end face inside the box is fixedly connected to a guide column symmetrically distributed about the center of the box; a second slider is slidably provided on the outer wall of the guide column; one end of the two second sliders close to each other is jointly fixed to a collecting box; the second slider is slidably provided on the outer wall of the guide column, so that the collecting box can slide inside the box, which is helpful to collect the solid sludge after dehydration treatment.

[0013] Preferably, the filter cloth is made of polyester fiber material; the filter cloth is made of polyester fiber material, and the polyester fiber filter cloth has good corrosion resistance and wear resistance, is suitable for solid-liquid separation of sludge and is not easy to be damaged. The filter cloth can be directly used as a storage tool for the sludge after dehydration treatment, and the sludge can be packaged and lifted from the collection box for collection.

[0014] Beneficial effects of the utility model:

[0015] 1. When the sludge enters the dewatering barrel through the feed pipe, the butterfly valve is closed to allow the sludge to accumulate in the dewatering barrel. Then the motor is started, and the output shaft of the motor drives the first connecting rod to start synchronous rotation with the dewatering barrel. The sludge is separated into solid and liquid parts by the centrifugal force of high-speed rotation. The solid sludge will adhere to the inner wall of the dewatering barrel, and the liquid will be thrown out to the outside of the dewatering barrel through the first leakage hole to achieve the initial dehydration of the sludge. By starting the first electric cylinder, the output shaft of the first electric cylinder will drive the scraper to move downward to scrape off the solid sludge attached to the inner wall of the dewatering barrel, solving the problem that the sludge is easily attached to the inner wall of the centrifugal dewatering barrel after dehydration to cause blockage. At the same time, the butterfly valve is opened to allow this part of the sludge that has undergone initial dehydration to fall into the collection box under the action of gravity;

[0016] 2. After the sludge enters the collection box after preliminary dehydration, the handle is manually pushed to make the first slider slide along the outer wall of the guide rod until the rear end of the support plate fits with the rear end surface of the box body. At this time, the squeezing block is located directly above the collection box, and the second electric cylinder is started. The output shaft of the second electric cylinder will drive the squeezing block to move downward, and the water in the sludge accumulated in the collection box is squeezed for the second time, so that the residual water flows out through the second leakage hole, making the dehydration of the sludge more thorough, solving the problem of poor dehydration effect of conventional sludge dehydration devices using a single dehydration method;

[0017] 3. The second slider is slidably arranged on the outer wall of the guide column, so that the collection box can slide inside the box body, which is helpful for collecting the solid sludge after dehydration. The filter cloth is made of polyester fiber material. The polyester fiber filter cloth has good corrosion resistance and wear resistance, is suitable for solid-liquid separation of sludge and is not easy to be damaged. The filter cloth can be directly used as a storage tool for the sludge after dehydration, and the sludge can be packaged and lifted from the collection box for collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 What is shown is a first three-dimensional structural schematic diagram of a dewatering device for sludge treatment of the utility model;

[0019] Figure 2 What is shown is a schematic diagram of a cross-sectional three-dimensional structure of a dewatering device for sludge treatment of the utility model;

[0020] Figure 3 The present invention shows a partial cross-sectional three-dimensional structural schematic diagram of a centrifugal dehydration component of a dehydration device for sludge treatment according to the present invention;

[0021] Figure 4 What is shown is a second three-dimensional structural schematic diagram of a dewatering device for sludge treatment of the utility model;

[0022] Figure 5 Shown is a third three-dimensional structural schematic diagram of a dewatering device for sludge treatment of the utility model;

[0023] Figure 6 Shown is a fourth stereoscopic structural schematic diagram of a dewatering device for sludge treatment of the utility model.

[0024] The markings in the accompanying drawings are: 1. box body; 2. closed door; 3. feed pipe; 401. motor; 402. first connecting rod; 403. dewatering bucket; 404. first leakage hole; 405. butterfly valve; 5. first electric cylinder; 6. scraper; 701. ladder platform; 702. water outlet pipe; 703. mounting hole; 704. sealing ring; 8. waste liquid box; 9. guide rod; 10. first slider; 11. second connecting rod; 12. handle; 13. support plate; 14. second electric cylinder; 15. extrusion block; 16. guide column; 17. second slider; 18. collecting box; 19. second leakage hole; 20. filter cloth. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] See also Figure 1-Figure 6The utility model provides an embodiment: a dewatering device for sludge treatment, comprising a box body 1; a centrifugal dewatering assembly for preliminary dehydration is fixedly connected to the upper end surface of the box body 1; a collecting box 18 for collecting sludge is movably provided at the lower end of the centrifugal dewatering assembly; guide rods 9 are fixedly connected to the left and right ends of the box body 1; a first slider 10 is slidably provided on the outer wall of the guide rod 9; a second connecting rod 11 is commonly fixedly connected to one end of the two first sliders 10 close to each other; a supporting plate 13 is fixedly connected to the rear end of the second connecting rod 11; a handle 12 and a second electric cylinder 14 are fixedly connected to the upper end of the supporting plate 13; an extrusion block 15 is fixedly connected to the output shaft of the second electric cylinder 14 through the supporting plate 13; the outer wall of the extrusion block 15 is in contact with the inner wall of the collecting box 18; a plurality of second leakage holes 19 evenly distributed are opened through the inner and outer walls of the collecting box 18; a filter cloth 20 for filtering out moisture is movably provided on the inner wall of the collecting box 18.

[0027] See also Figure 1 In this embodiment, a closed door 2 is hinged at the upper left edge of the front end of the box body 1; a feed pipe 3 is installed through the upper end of the box body 1; and a waste liquid box 8 is slidably arranged inside the box body 1.

[0028] See also Figure 3 In this embodiment, the centrifugal dehydration component includes a motor 401, a first connecting rod 402, a dehydration bucket 403, a first leakage hole 404 and a butterfly valve 405; the motor 401 is fixedly connected to the upper end surface inside the box body 1; four first connecting rods 402 evenly distributed in a circle are fixedly connected to the output shaft of the motor 401; the other ends of the four first connecting rods 402 are commonly fixedly connected to the dehydration bucket 403; the upper and lower ends of the dehydration bucket 403 are open; the inner and outer walls of the dehydration bucket 403 are penetrated by a plurality of evenly distributed first leakage holes 404; the lower end of the dehydration bucket 403 is fixedly connected to the butterfly valve 405.

[0029] See also Figure 4 In this embodiment, a first electric cylinder 5 is fixedly connected to the upper end of the box body 1; the output shaft of the first electric cylinder 5 passes through the upper end of the box body 1 and is fixedly connected to a scraper 6; the scraper 6 is a circular ring structure; the outer wall of the scraper 6 fits with the inner wall of the dehydration barrel 403.

[0030] See also Figure 1 and Figure 4 A step 701 is fixedly connected to the middle of the inner wall of the box body 1; a water outlet pipe 702 is fixedly connected to the four corner edges of the lower end of the step 701; the water outlet pipe 702 is connected to the internal space of the box body 1; the other end of the water outlet pipe 702 is located above the waste liquid box 8; mounting holes 703 are opened through the upper and lower ends of the step 701; a sealing ring 704 is fixedly connected to the inner wall of the mounting hole 703; the inner wall of the sealing ring 704 is in contact with the outer wall of the butterfly valve 405.

[0031] See also Figure 6The rear end surface inside the box body 1 is fixedly connected with a guide column 16 symmetrically distributed about the center of the box body 1; the outer wall of the guide column 16 is slidably provided with a second slider 17; the ends of the two second sliders 17 close to each other are commonly fixedly connected with a collecting box 18; the filter cloth 20 is made of polyester fiber material.

[0032] When working, first add the sludge into the dewatering barrel 403 through the feed pipe 3, close the butterfly valve 405 to allow the sludge to accumulate in the dewatering barrel 403, then start the motor 401, the output shaft of the motor 401 will drive the first connecting rod 402 and the dewatering barrel 403 to start synchronous rotation, and use the centrifugal force of high-speed rotation to separate the sludge into solid and liquid parts. The solid sludge will adhere to the inner wall of the dewatering barrel 403, and the liquid will be thrown out to the outside of the dewatering barrel 403 through the first leakage hole 404, and flow into the waste liquid box 8 through the outlet pipe 702, so as to achieve the initial dehydration of the sludge;

[0033] Then, the butterfly valve 405 is opened, so that the sludge that has undergone preliminary dehydration falls into the collection box 18 under the action of gravity, and the handle 12 is manually pushed to make the first slide block 10 slide along the outer wall of the guide rod 9 until the rear end of the support plate 13 fits with the rear end surface of the box body 1. At this time, the squeezing block 15 is located directly above the collection box 18, and the second electric cylinder 14 is started. The output shaft of the second electric cylinder 14 will drive the squeezing block 15 to move downward, and the water in the sludge accumulated in the collection box 18 is squeezed for the second time, so that the residual water flows out through the second leakage hole 19 and falls into the waste liquid box 8 for unified collection;

[0034] After the sludge has undergone two-step dehydration treatment, the collecting box 18 is pulled so that the second slider 17 slides along the outer wall of the guide column 16 until the collecting box 18 slides out of the box body 1. The filter cloth 20 can be directly used as a storage tool for the sludge, and the sludge is packaged and lifted from the collecting box 18 for collection.

[0035] Through the above steps, the sludge is passed into the dewatering barrel 403, the motor 401 is started to drive the dewatering barrel 403 to rotate at a high speed, and the centrifugal force is used to realize the solid-liquid separation of the sludge. At the same time, a scraper 6 is provided, which can scrape off the sludge attached to the inner wall of the dewatering barrel 403 under the drive of the first electric cylinder 5, thereby solving the problem that the sludge is easily attached to the inner wall of the centrifugal dewatering barrel after dehydration and causes blockage. The sludge after preliminary dehydration will fall into the collecting box 18 through the opened butterfly valve 405, and the support plate 13 is pushed to slide into the interior of the box body 1. Then the second electric cylinder 14 is started to drive the squeezing block 15 to perform secondary squeezing on the sludge in the collecting box 18 to squeeze out the residual water in the sludge, thereby solving the problem that the conventional sludge dewatering device adopts a single dehydration method and has a poor dehydration effect.

[0036] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A dewatering device for sludge treatment, comprising a housing (1); characterized in that: A centrifugal dehydration assembly for preliminary dehydration is fixedly connected to the upper end surface of the box body (1); a collecting box (18) for collecting sludge is movably provided at the lower end of the centrifugal dehydration assembly; guide rods (9) are fixedly connected to the left and right ends of the box body (1); a first slider (10) is slidably provided on the outer wall of the guide rod (9); a second connecting rod (11) is fixedly connected to the ends of the two first sliders (10) close to each other; a support plate (13) is fixedly connected to the rear end of the second connecting rod (11); a handle (12) and a second electric cylinder (14) are fixedly connected to the upper end of the support plate (13); an output shaft of the second electric cylinder (14) passes through the support plate (13) and is fixedly connected to an extrusion block (15); the outer wall of the extrusion block (15) is in contact with the inner wall of the collecting box (18); a plurality of evenly distributed second leakage holes (19) are penetrated through the inner and outer walls of the collecting box (18); and a filter cloth (20) for filtering out moisture is movably provided on the inner wall of the collecting box (18).

2. A dewatering device for sludge treatment according to claim 1, characterized in that: A sealed door (2) is hingedly connected to the left edge of the upper part of the front end of the box body (1); a feed pipe (3) is installed through the upper end of the box body (1); and a waste liquid box (8) is slidably arranged inside the box body (1).

3. A dewatering device for sludge treatment according to claim 1, characterized in that: The centrifugal dehydration component comprises a motor (401), a first connecting rod (402), a dehydration bucket (403), a first leakage hole (404) and a butterfly valve (405); the motor (401) is fixedly connected to the upper end surface of the box body (1); four first connecting rods (402) evenly distributed in a circumference are fixedly connected to the output shaft of the motor (401); the other ends of the four first connecting rods (402) are commonly fixedly connected to the dehydration bucket (403); the upper and lower ends of the dehydration bucket (403) are open; the inner and outer walls of the dehydration bucket (403) are penetrated by a plurality of evenly distributed first leakage holes (404); and the lower end of the dehydration bucket (403) is fixedly connected to the butterfly valve (405).

4. A dewatering device for sludge treatment according to claim 1, characterized in that: A first electric cylinder (5) is fixedly connected to the upper end of the box body (1); an output shaft of the first electric cylinder (5) passes through the upper end of the box body (1) and is fixedly connected to a scraper (6); the scraper (6) is a circular ring structure; the outer wall of the scraper (6) fits with the inner wall of the dewatering barrel (403).

5. A dewatering device for sludge treatment according to claim 1, characterized in that: A step (701) is fixedly connected to the middle of the inner wall of the box body (1); a water outlet pipe (702) is fixedly connected through the four corner edges of the lower end of the step (701); the water outlet pipe (702) is connected to the internal space of the box body (1); the other end of the water outlet pipe (702) is located above the waste liquid box (8); mounting holes (703) are opened through the upper and lower ends of the step (701); a sealing ring (704) is fixedly connected to the inner wall of the mounting hole (703); and the inner wall of the sealing ring (704) is in contact with the outer wall of the butterfly valve (405).

6. A dewatering device for sludge treatment according to claim 1, characterized in that: A guide column (16) symmetrically distributed about the center of the box body (1) is fixedly connected to the rear end surface inside the box body (1); a second sliding block (17) is slidably provided on the outer wall of the guide column (16); and a collection box (18) is fixedly connected to one end of the two second sliding blocks (17) that are close to each other.

7. A dewatering device for sludge treatment according to claim 1, characterized in that: The filter cloth (20) is made of polyester fiber material.

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