A sludge treatment device

Abstract

The application discloses a sludge treatment device, and belongs to the technical field of sludge treatment devices.The sludge treatment device comprises a rotating cabin, a water removal sheet and a plurality of extrusion rollers, the rotating cabin and the plurality of extrusion rollers are parallel to the axis of the support and are rotationally connected to the support, a plurality of mud outlet holes are arranged in a circumferential array on the wall of the rotating cabin, a feeding channel is arranged at one end of the rotating cabin, a water outlet hole is arranged at the end away from the feeding channel, the plurality of extrusion rollers are symmetrically arranged in the rotating cabin, a plurality of mud pressing blocks matched with the mud outlet holes are arranged on the outer surface of the extrusion rollers, an arc-shaped object carrier parallel to the axis of the extrusion rollers is arranged between the two adjacent extrusion rollers, the water removal sheet is symmetrically arranged on the center line of the two adjacent extrusion rollers, the water removal sheet comprises a carrier sheet, a rotating shaft part and a mud scraping part, the rotating shaft part is rotationally connected to the support at both ends, the mud scraping part is slidably connected to the carrier sheet, the side of the mud scraping part away from the spring is abutted against the surface of the object carrier, and a plurality of water drainage holes penetrating through the carrier sheet and the mud scraping part are arranged on the carrier sheet and the mud scraping part.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge treatment device, and particularly relates to a sludge treatment device. BACKGROUND

[0002] Sludge is a kind of extremely complex non-homogeneous body with high water content, which is composed of organic matter, bacteria, inorganic particles, colloid and the like. The sludge is generally produced during the treatment of urban wastewater and industrial wastewater. Before the sludge is discharged, it needs to be treated for reduction, stabilization and harmlessness. Due to the high water content of the sludge, the sludge needs to be dried. After the drying treatment, the sludge is relatively stable due to the low water content, and the content of microorganisms and bacteria is greatly reduced. The sludge can be used for manufacturing fertilizer and soil conditioner and other products, so as to realize the resource treatment of the sludge. In the prior art, the sludge is generally dried by incineration or heating. Due to the large amount of water contained in the sludge, a large amount of smoke is generated during the incineration treatment, which is not conducive to environmental protection. The heating drying method is beneficial to the treatment of the sludge. For example, a sludge dryer disclosed in patent CN 109608002 A spreads the sludge on the wall of a heating cylinder for drying, and then scratches the sludge into the spiral conveying blade, so as to separate the transmission part and the sludge drying part, and prevent the sludge from being stuck and blocked. At the same time, according to the required water content, the opening and closing frequency of the volute bending plate can be controlled by changing the number of turns of the volute, so as to improve the energy efficiency of the sludge drying. However, this drying method does not pre-treat the water, and a large amount of heat is wasted during the evaporation of the water. SUMMARY

[0003] In view of the above technical deficiencies, the present application aims to provide a sludge treatment device, which can reduce the energy consumption in the sludge treatment process by pre-treating and dehydrating the sludge to be dried.

[0004] To solve the above technical problems, the present application adopts the following technical solutions: The present application provides a sludge treatment device, which comprises a rotating cabin, a water removal sheet and a plurality of extrusion rollers, the rotating cabin and the plurality of extrusion rollers are parallel in axis and are rotationally connected with a support, a plurality of mud outlet holes are arranged in a circumferential array on the wall of the rotating cabin, one end of the rotating cabin is provided with a feeding channel, and the end away from the feeding channel is provided with a water outlet hole, the plurality of extrusion rollers are symmetrically arranged in the rotating cabin, a plurality of mud pressing blocks matched with the mud outlet holes are arranged around the outer surface of the extrusion rollers, the outer surface of the mud pressing blocks is tangent to the inner surface of the rotating cabin, an arc-shaped object carrier is arranged between the two adjacent extrusion rollers and is parallel in axis to the extrusion rollers, the water removal sheet is symmetrically arranged on the center line of the two adjacent extrusion rollers, the water removal sheet comprises a carrier sheet, a rotating shaft part and a mud scraping part, the two ends of the rotating shaft part are rotationally connected with the support, the mud scraping part is slidably connected with the carrier sheet, a spring is arranged between the mud scraping part and the carrier sheet, the side of the mud scraping part away from the spring is in abutment with the surface of the object carrier, the carrier sheet and the object carrier form a water outlet channel connected with the water outlet hole, a plurality of drainage holes penetrating through the carrier sheet and the mud scraping part are arranged on the carrier sheet and the mud scraping part, and a driving device for driving the water removal sheet to rotate is arranged on the support.

[0005] Preferably, the driving device comprises a straight rack, one side of the carrier sheet close to the rotating shaft part is provided with a connecting rod having one end rotationally connected with the carrier sheet, the ends of the two adjacent connecting rods away from the carrier sheet are provided with first gears rotationally connected with the connecting rods, the straight rack is meshingly connected with the first gears, and the straight rack is slidably connected with the support.

[0006] Preferably, a second gear rotationally connected with the support is arranged on the support, the straight rack is meshingly connected with the first gears and the second gear, arc-shaped racks are symmetrically arranged at the two ends of the rotating cabin, and the arc-shaped racks are meshingly connected with the second gear.

[0007] Preferably, the end of the first gear away from the straight rack is provided with a sliding block, and a limiting block matched with the sliding block is arranged on the support.

[0008] Preferably, the feeding channel is symmetrically arranged on the two sides of the water outlet channel.

[0009] Preferably, a water collecting tank is arranged at the bottom of the support.

[0010] Preferably, the end of the rotating cabin close to the feeding channel is provided with a third gear connected with the rotating cabin.

[0011] Preferably, a plurality of rows of drainage holes are arranged on the carrier sheet and the mud scraping part, and the number of drainage holes in each row increases with the increase of the distance between the drainage holes and the object carrier.

[0012] Preferably, the object table comprises a first arc-shaped part and a second arc-shaped part, the first arc-shaped part and the second arc-shaped part are reversely tangent, the center of the first arc-shaped part is located on the midline of the two adjacent extrusion rollers, and the center of the second arc-shaped part is coincident with the center of the extrusion roller.

[0013] Preferably, characterized in that, the rotating cabin is externally provided with a transfer table.

[0014] The present application has the following advantages: 1. The present application can effectively remove part of the water in the sludge by making the sludge precipitate by itself and removing water from the sludge through the water drainage holes, thereby reducing the energy consumption of the sludge during further treatment and saving energy; 2. The dewatered sludge is extruded from the sludge outlet of the rotating cabin by the extrusion rollers, and the sludge after water removal is shaped, which is convenient for the next drying treatment, transportation and transportation; 3. By adjusting the number and distribution of the water drainage holes, the water drainage speed can be adjusted, and the structure is simple and the scheme is simple; 4. In the later stage of water drainage, when the water content in the sludge is low, the sludge is slowly pushed to move, so that the water in the sludge is discharged, and as the water content decreases, the water drainage holes become smaller, so that the water drainage speed can be adjusted in time; 5. The water drainage holes are in a variable state, which helps to prevent the water drainage holes from being blocked. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0016] Figure 1 The overall structure of the sludge treatment device provided by the embodiment of the present application is shown in a front view.

[0017] Figure 2 The overall structure of the sludge treatment device provided by the embodiment of the present application is shown in a side view.

[0018] Figure 3 The overall structure of the sludge treatment device provided by the embodiment of the present application is shown in a bottom view.

[0019] Figure 4 For Figure 3 The enlarged view of part A.

[0020] Figure 5 The internal structure of the sludge treatment device provided by the embodiment of the present application is shown in a front view.

[0021] Figure 6 The internal structure of the sludge treatment device provided by the embodiment of the present application is shown in a side view.

[0022] Figure 7 A first view angle schematic view of a water removal piece structure of a sludge treatment device provided by an embodiment of the present application.

[0023] Figure 8 A second view angle schematic view of a water removal piece structure of a sludge treatment device provided by an embodiment of the present application.

[0024] Figure 9 A front view of a sludge treatment device provided by an embodiment of the present application with part of a support removed.

[0025] Figure 10 A side view of a sludge treatment device provided by an embodiment of the present application with part of a support removed.

[0026] Figure 11 A schematic view of a water removal piece structure of a sludge treatment device provided by an embodiment of the present application in use.

[0027] Legend: 1, transfer table; 2, water removal piece; 21, carrier piece; 22, rotating shaft part; 23, mud scraping part; 24, spring; 25, drainage hole; 3, extrusion roller; 31, mud block; 4, rotating cabin; 41, mud outlet hole; 42, feeding channel; 43, water outlet hole; 44, arc-shaped rack; 45, third gear; 5, carrier table; 51, first arc-shaped part; 52, second arc-shaped part; 6, support; 71, first gear; 711, sliding block; 712, limiting strip block; 72, second gear; 73, connecting rod; 74, straight rack; 8, water collecting tank. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0029] Embodiment 1: as Figures 1 to 11The present application provides a sludge treatment device, which comprises a rotating cabin 4, a dehydration sheet 2 and a plurality of extrusion rollers 3. The rotating cabin 4 and the extrusion rollers 3 cooperate to reshape the dewatered sludge, facilitating further treatment of the water in the sludge. The rotating cabin 4 and the plurality of extrusion rollers 3 are parallel to the axis and are rotatably connected to the support 6. The rotating cabin 4 is provided with a plurality of sludge outlet holes 41 arranged in a circumferential array on the wall. The dewatered sludge is extruded from the sludge outlet holes 41 of the rotating cabin 4 through the extrusion rollers 3. One end of the rotating cabin 4 is provided with a feeding channel 42, and the end away from the feeding channel 42 is provided with a water outlet hole 43. The plurality of extrusion rollers 3 are symmetrically arranged in the rotating cabin 4. The outer surface of the extrusion roller 3 is provided with a plurality of sludge pressing blocks 31 cooperating with the sludge outlet holes 41. The outer surface of the sludge pressing block 31 is tangent to the inner surface of the rotating cabin 4. The interaction between the extrusion roller 3 and the rotating cabin 4 causes the sludge to be extruded from the sludge outlet holes 41 of the rotating cabin 4. Adjacent two extrusion rollers 3 are provided with an arc-shaped object carrier 5 parallel to the axis of the extrusion roller 3. The sludge enters the object carrier 5 through the feeding channel 42. Adjacent two extrusion rollers 3 are symmetrically provided with a dehydration sheet 2 on the centerline. The dehydration sheet 2 comprises a carrier sheet 21, a rotating shaft part 22 and a sludge scraping part 23. The two ends of the rotating shaft part 22 are rotatably connected to the support 6. The carrier sheet 21 is rotatably connected to the support 6 through the rotating shaft part 22. The sludge scraping part 23 is slidably connected to the carrier sheet 21. A spring 24 is arranged between the sludge scraping part 23 and the carrier sheet 21. The side of the sludge scraping part 23 away from the spring 24 is in abutment with the surface of the object carrier 5. The two carrier sheets 21 are arranged in the middle of the object carrier 5 to form a water outlet channel connected to the water outlet hole 43. A plurality of drainage holes 25 are arranged on the carrier sheet 21 and the sludge scraping part 23. The distance between the lowest point / arc surface of the object carrier 5 and the drainage hole 25 with the smallest distance is D1. The height of the object carrier 5 is h. According to the water content of the sludge, 0.5h≤D1 Figure 7 h. The D1 of the drainage hole 25 can be adjusted. The sludge enters the object carrier 5 through the feeding channel 42. Under the premise of no external stirring, due to the action of gravity, on the one hand, the sludge will naturally settle, realizing the separation of sludge and water. The upper water layer is discharged through the drainage hole 25, enters the water outlet channel and is discharged through the water outlet hole 43. On the other hand, the cross section of the object carrier 5 is arc-shaped, and the sludge has a tendency to move to the lowest point in the middle of the object carrier 5. When the carrier sheet 21 rotates and expands to both ends of the object carrier 5, the carrier sheet 21 and the sludge scraping part 23 push the sludge to move to both ends of the object carrier. The sludge that has not been discharged through the drainage hole 25 can continue to be discharged through the drainage hole 25 due to the increase in height. The carrier sheet 21 and the sludge scraping part 23 push the sludge to move to both ends of the object carrier. Due to the elastic force of the spring 24, the sludge scraping part 23 slides relative to the carrier sheet 21. The sludge scraping part 23 is always in abutment with the arc surface of the object carrier 5. The drainage holes 25 of the carrier sheet 21 and the sludge scraping part 23 change from overlapping to partially overlapping, reducing the opening degree of the drainage holes 25. The increase in height reduces the drainage speed at the same time, preventing the sludge in the lower layer from floating up due to the high drainage speed of the water flow. The support 6 is provided with a driving device for driving the dehydration sheet 2 to rotate.

[0030] Furthermore, the driving device includes a straight rack 74. The side of the carrier plate 21 near the rotating shaft 22 is provided with a connecting rod 73 at one end that is rotatably connected to the carrier plate 21. The ends of two adjacent connecting rods 73 away from the carrier plate 21 are provided with a first gear 71 that is rotatably connected to the connecting rod 73. The straight rack 74 is meshed with the first gear 71 and slidably connected to the bracket 6. The driving device drives the straight rack 74 to slide along the bracket 6, thereby driving the first gear 71 to rotate, driving the dewatering plate 2 to rotate, and driving the sludge to be squeezed out, thus dewatering the sludge.

[0031] Furthermore, the feed channel 42 is symmetrically arranged on both sides of the outlet channel. The feed channel 42 is not connected to the drainage channel. A one-way plate can be installed at the connection between the feed channel 42 and the rotating chamber 4 to allow sludge to enter but not exit, thus preventing sludge backflow. The one-way plate is not shown in the diagram.

[0032] Furthermore, a transfer platform 1 is provided outside the rotating chamber 4 for transferring the formed clay blocks.

[0033] Example 2: Based on Example 1, such as Figures 2 to 4 As shown, in order to prevent the mud discharge hole 41 from becoming blocked, the bottom of the support 6 is provided with a water collection tank 8. The water discharged through the drain hole 43 is collected by the water collection tank 8. The rotating chamber 4 is provided with a third gear 45 connected to the rotating chamber 4 at one end near the feed channel 42. An external motor drives the third gear 45 to rotate, which in turn drives the rotating chamber 4 to rotate. The rotation of the rotating chamber 4 makes it easier to clean the blocked parts or rotate it into the water collection tank 8 for cleaning, so that the blocked mud discharge hole 41 can be restored to open. Mud discharge is carried out using other mud discharge holes 41 on the rotating chamber 4, so that the sludge treatment work can continue.

[0034] Furthermore, the bracket 6 is provided with a second gear 72 that is rotatably connected to the bracket 6, and a straight rack 74 is meshed with the first gear 71 and the second gear 72 respectively. The rotating chamber 4 is provided with an arc rack 44 at both ends in a mirror symmetrical manner. The arc rack 44 is meshed with the second gear 72. The water removal plate 2 can be driven to rotate through the arc rack 44.

[0035] Furthermore, the end of the first gear 71 away from the straight rack 74 is provided with a slider 711 that is rotatably connected to the first gear 71, and the bracket 6 is provided with a limiting strip 712 that cooperates with the slider 711.

[0036] Example 3: Based on Example 1, such as Figures 7 to 8 , Figure 11As shown, in order to optimize the water removal capacity of the water removal sheet 2, a plurality of rows of drainage holes 25 are arranged on the carrier sheet 21 and the mud scraping part 23, and the number of each row of drainage holes 25 increases with the distance between the drainage holes 25 and the carrier table 5. The less the water quantity, the greater the influence of the water flow rate on the sludge sedimentation. Based on this, by adjusting the number of drainage holes 25, the closer to the sedimented sludge, the fewer the number of drainage holes 25, and by adjusting the number to adjust the water removal speed of the drainage holes 25, the water removal speed is prevented from being too fast to cause the lower layer of sedimented sludge to be lifted by the water flow.

[0037] Further, as shown, Figure 5 The carrier table 5 includes a first arc-shaped part 51 and a second arc-shaped part 52, which are inversely tangent to each other. The center of the first arc-shaped part 51 is located on the midline of the adjacent two extrusion rollers 3, and the center of the second arc-shaped part 52 coincides with the center of the extrusion roller 3, which facilitates the transfer of the sedimented sludge on the carrier table 5 to the extrusion roller 3 by the water removal sheet 2.

[0038] In use, the sludge enters the rear through the feed channel 42 and is placed on the carrier table 5. When not stirred, the sludge will naturally sediment and separate into water and mud. The upper water layer is discharged through the drainage holes 25 into the water outlet channel and then discharged through the water outlet hole 43. The driving device drives the straight rack 74 to slide along the support 6, drives the first gear 71 to rotate, and drives the water removal sheet 2 to rotate. The carrier sheet 21 rotates and expands towards both ends of the carrier table 5. The carrier sheet 21 and the mud scraping part 23 push the sludge slowly towards both ends of the carrier table 5. A small amount of sludge and water that has not been discharged through the drainage holes 25 can continue to be discharged through the drainage holes 25 due to the increase in height at this time. At the same time, the carrier sheet 21 and the mud scraping part 23 push the sludge towards both ends of the carrier table 5. Due to the spring force of the spring 24, the mud scraping part 23 slides relative to the carrier sheet 21. The mud scraping part 23 is always in abutment with the arc surface of the carrier table 5. The drainage holes 25 of the carrier sheet 21 and the mud scraping part 23 change from overlapping to partially overlapping, reducing the opening degree of the drainage holes 25. With the increase in height, the water removal speed is reduced at the same time of water removal, preventing the water removal speed from being too fast to cause the lower layer of sedimented sludge to be lifted by the water flow. The water removal sheet 2 rotates to push the sludge to the extrusion roller 3 for extrusion through the mud outlet hole 41, and the sludge is transferred by the transfer table 1 for further processing.

[0039] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A sludge treatment apparatus, characterized by comprising: The utility model provides a kind of sludge dewatering device, including rotating cabin (4), water removal sheet (2) and multiple extrusion rollers (3), the rotating cabin (4) and multiple extrusion rollers (3) axis are parallel and are all rotated with support (6) connection, the rotating cabin (4) wall is equipped with the circumferential array distribution of mud outlet hole (41), rotating cabin (4) one end is equipped with feed channel (42), the end away from feed channel (42) is equipped with water outlet hole (43), multiple extrusion rollers (3) are symmetrically arranged in rotating cabin (4), extrusion roller (3) outer surface is equipped with multiple mud pressing block (31) with mud outlet hole (41) cooperation, mud pressing block (31) outer surface is tangent with rotating cabin (4) inner surface, the middle line of adjacent two extrusion rollers (3) is equipped with arc object table (5) with the axis parallel with extrusion roller (3) axis, sludge is placed on object table (5) after entering after feed channel (42), the middle line of adjacent two extrusion rollers (3) is symmetrically equipped with water removal sheet (2), the water removal sheet (2) includes carrier sheet (21), rotating shaft part (22) and mud scraping part (23), the carrier sheet (21) is rotated with support (6) connection by rotating shaft part (22), the mud scraping part (23) is slidably connected with the carrier sheet (21), spring (24) is arranged between the mud scraping part (23) and the carrier sheet (21), the side of mud scraping part (23) away from spring (24) is abutted with the surface of object table (5), the carrier sheet (21) and the arc surface between object table (5) form the water outlet channel connected with water outlet hole (43), the carrier sheet (21) and mud scraping part (23) are equipped with multiple drainage holes (25) penetrating through carrier sheet (21) and mud scraping part (23), the support (6) is equipped with driving device for driving water removal sheet (2) to rotate, the carrier sheet (21) rotates, and expands to both ends of object table (5); The feed channel (42) is symmetrically arranged on both sides of the water outlet channel, and the feed channel (42) is not communicated with the drainage channel; The object table (5) includes a first arc portion (51) and a second arc portion (52), the first arc portion (51) and the second arc portion (52) are inversely tangent, and the center of the first arc portion (51) is located on the middle line of the adjacent two extrusion rollers (3), and the center of the second arc portion (52) coincides with the center of the extrusion roller (3).

2. A sludge treatment apparatus as claimed in claim 1, characterised in that The driving device includes a straight rack (74), the straight rack (74) is slidably connected with the support (6), one side of the carrier sheet (21) close to the rotating shaft part (22) is provided with a connecting rod (73) having one end rotatably connected with the carrier sheet (21), the ends of the adjacent two connecting rods (73) away from the carrier sheet (21) are provided with first gears (71) rotatably connected with the connecting rods (73), and the straight rack (74) is meshingly connected with the first gears (71).

3. A sludge treatment apparatus as claimed in claim 2, characterised in that, The support (6) is provided with a second gear (72) rotatably connected with the support (6), the straight rack (74) is meshingly connected with the first gears (71) and the second gear (72), respectively, and the rotating cabin (4) is mirror-symmetrically provided with arc-shaped racks (44) at both ends, the arc-shaped racks (44) are meshingly connected with the second gear (72).

4. A sludge treatment apparatus as claimed in claim 2, characterised in that The first gear (71) is provided with a sliding block (711) away from one end of the straight rack (74), and the support (6) is provided with a limiting block (712) matched with the sliding block (711).

5. A sludge treatment apparatus as claimed in claim 1, characterised in that The support (6) is provided with a water collecting groove (8) at the bottom.

6. A sludge treatment apparatus as claimed in claim 1, characterised in that The rotating cabin (4) is provided with a third gear (45) connected with the rotating cabin (4) at one end close to the feeding channel (42).

7. A sludge treatment apparatus as claimed in claim 1, characterised in that A plurality of rows of the drainage holes (25) are arranged on the slide (21) and the mud scraping part (23), and the number of drainage holes (25) in each row increases with the increase of the distance between the drainage holes (25) and the object table (5).

8. A sludge treatment apparatus as claimed in claim 1, characterised in that The rotating cabin (4) is provided with a transfer table (1) outside.

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