TW201634407A - Stirring device and drying device for sludge drying device - Google Patents

Abstract

A stirring device adopted in a sludge drying device, the stirring device comprising a rotating shaft, wherein two ends of the rotating shaft are respectively and rotatably provided in shaft holes on walls at two sides of a drying chamber of the sludge drying device; a plurality of stirring assemblies are fixedly installed on the rotating shaft at predetermined intervals, and rotate with the rotating shaft; each stirring assembly of the plurality of stirring assemblies has a blade or a ratchet extending outward in a radial direction from an axis of the rotating shaft; and the blades or the ratchets corresponding to every two adjacent stirring assemblies of the plurality of stirring assemblies are spaced apart from each other by an angle [alpha] in a circumferential direction of a rotation of the rotating shaft. Also provided is a sludge drying device using the stirring device.

Description

Flipping device and drying device for sludge drying device

The invention relates to the field of sludge drying, and relates to a turning device for a sludge drying device, in particular to a bottom drying type sludge drying device for a monomer form for turning and moving sludge The flipping device and the drying device using the flipping device.

In the sludge treatment device, the sludge having a low water content and the dry powder curing agent are generally stirred by a stirring device to reduce the moisture content of the sludge. The Chinese utility model patent CN203319838U proposes a sludge solidification treatment mixer which continuously stirs the sludge and the solidified material put into the stirring chamber by a double-shaft stirring device to uniformly mix the two, thereby reducing the sludge. The purpose of moisture content. However, such a mixer reduces the moisture content of the sludge by blending the additive into the sludge, which not only increases the amount of sludge, but also causes the sludge after solidification to be reused.

Accordingly, there is a need for a tumbling device suitable for use in a sludge treatment plant and a sludge drying device using such a tumbling device that is not only suitable for tumbling sludge but also for moving sludge in a certain direction.

In order to overcome the deficiencies in the prior art, the present invention proposes a flipping device suitable for use in a bottom dry sludge drying device. The flipping device of the present invention includes a rotatable shaft and a plurality of flipping assemblies fixedly mounted on the rotatable shaft, wherein each flipping assembly has at least one vane or ratchet. The blades or ratchets of each two adjacent flipping assemblies of the plurality of flipping assemblies are offset from each other by a certain angle in the circumferential direction of rotation of the rotating shaft so that the blades or ratchets can be sheared, broken and flipped The mud turning device can uniformly withstand the load of the sludge, which can promote the contact of the sludge with the dry gas and prolong the service life of the turning device. The plurality of flipping assemblies exhibit a spiral profile that rotates leftward or rightward when the blades or ratchets of the plurality of flipping assemblies are sequentially offset to the left or right by a certain angle in the circumferential direction of rotation of the rotating shaft.

In the flipping device of the present invention, the front portion of each blade or ratchet is twisted at an angle relative to its rear portion so that the main surface of the front portion of the twisted blade or ratchet moves the sludge. Moreover, by the combination of the spiral profile of the plurality of flipping assemblies of the flipping device and the torsion portion of the blade or ratchet of the corresponding flipping assembly, the flipping device of the present invention can not only shear, crush and flip the sludge, but also The sludge is pushed to move substantially in the axial direction of the rotating shaft.

In the sludge drying apparatus using the tumbling device of the present invention, the scraping member of the blade or ratchet of the flipping assembly of the flipping device or the scraping member fixed to the front end of the blade or the ratchet is connected to the communication port or side Opening The scraping of the nearby sludge makes the flow of the drying gas from the second drying chamber to the first drying chamber smoother, wherein the communication port is formed in the casing provided in the sludge drying device for separating the first drying chamber And a partition wall of the second drying chamber, wherein the side opening is formed by the bridge member and the partition wall disposed above the communication port, so that the drying gas can be made by the communication port or the curved path from the communication port to the side opening The second drying chamber enters the first drying chamber to dry the sludge laid on the partition wall from the bottom.

The sludge drying device using the tumbling device of the present invention is basically a monomer form, which has the characteristics of high drying efficiency, low energy consumption, small floor space and strong adaptability, and is completely suitable for the needs of the current market. Since the sewage treatment plants in densely populated cities are more dispersed, the monomer-based sludge drying device can be configured with little change in equipment in existing sewage treatment plants.

The sludge drying device using the tumbling device of the present invention solves the problem that the sludge has strong viscosity, is easy to agglomerate, and is difficult to be broken. Continuously shearing, crushing and flipping and moving the sludge in the first drying chamber and the scraping front end of the blade or ratchet of the flipping assembly or the scraping member fixed to the front end of the blade or ratchet by the flipping assembly of the flipping device Scraping the sludge near the side opening increases the chance of contact between the drying gas and the sludge.

1‧‧‧Sludge drying device

2‧‧‧ Ontology

3‧‧‧Upper cover (or cover)

4a‧‧‧floor

4‧‧‧ divider

401‧‧‧ Bridge

5‧‧‧Connected

6a‧‧‧First drying room

6b‧‧‧Second drying room

7‧‧‧Flip device

7a, 7b‧‧‧ flipping device

701, 701a, 701b‧‧‧ rotating shaft

702, 702a, 702b‧‧‧ flip components

7021-7028‧‧‧ flipping components

703, 703a, 703b‧‧‧ blades or ratchets

7031‧‧‧Reversal

7032‧‧‧Fixed part

7033‧‧‧through hole

704‧‧‧ Fixed disk

7041‧‧‧ center hole

7042‧‧‧Protruding

7043‧‧‧ hole

8‧‧‧ Feed inlet

9‧‧‧Outlet

10‧‧‧Exhaust port

15‧‧‧air inlet

15a‧‧‧Clean up

G‧‧‧ longitudinal direction of the casing

α, β, θ‧‧‧ angle

A‧‧‧ main surface

The structure, advantages and technical effects of the preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, wherein: FIG. 1 is a flipping of the present invention suitable for the sludge drying apparatus. Figure 2 is a perspective view of a flipping device similar to the flipping device of Figure 1; Figure 3 is a perspective view of another embodiment of the flipping device of the present invention suitable for use in a sludge drying device; Is an axial view of two adjacent flipping assemblies of the flipping device of Figure 3; Figure 5 is an axial view of one of the flipping assemblies of the flipping device of Figure 3; Figure 5a is the flipping assembly of Figure 5 Figure 3 is a perspective view of one of the blades or ratchets of the flipping assembly; Figure 6a is a front view of the blade or ratchet of Figure 6; Figure 6b is the blade or ratchet of Figure 6 Figure 6c is a plan view of the blade or ratchet of Figure 6; Figure 7 is an axial view of another embodiment of the flipping assembly of the flipping device; Figure 7a is a perspective view of the retaining disk of the flipping assembly of Figure 7. Figure 8 is an axial view of another embodiment of the flipping assembly of the flipping device; Figure 8a is a perspective view of the retaining disk of the flipping assembly of Figure 8; Figure 9 is a longitudinal cross-sectional view of a bottom drying type sludge drying apparatus using the turning device of the present invention; Figure 10 is a transverse sectional view of the sludge drying apparatus of Figure 9; and Figure 11 is a sludge drying apparatus shown in Figure 9. FIG. 12 is an enlarged view of the bridge member in the L portion circled in FIG. 9; and FIG. 13 is a view of the bridge member of FIG. 12 as viewed in the longitudinal direction of the housing.

1 and 2 show a preferred embodiment of the bottom dry sludge drying apparatus of the present invention, respectively, in a longitudinal and transverse cross-section. The sludge drying apparatus 1 of the present invention comprises a casing, wherein the casing comprises a body 2, an upper cover (or cover) 3 and a bottom plate 4a. A partitioning plate 4 is provided in the casing for separating the internal space of the casing from the two chambers as the first drying chamber 6a and the second drying chamber 6b, respectively. A plurality of communication ports 5 for communicating the first drying chamber 6a and the second drying chamber 6b are formed on the partitioning plate 4 to enable the drying gas to enter the first drying chamber 6a from the second drying chamber 6b. As shown, although the first drying chamber 6a and the second drying chamber 6b are arranged one above the other, it may have other arrangements. The upper portion of the body 2, the upper cover 3, and the partitioning plate 4 constitute a first drying chamber 6a, and the lower portion of the body 2, the partitioning plate 4, and the bottom plate 4a constitute a second drying chamber 6b. However, the housing may be constructed from multiple components or in a variety of ways, for example, The upper portion of the body 2 is integrally formed with the partitioning plate 4, wherein the upper surface of the partitioning plate is used as the bottom of the first drying chamber 6a, and the lower portion of the body 2 is fixed to the partitioning plate to partition the partitioning plate The lower portion serves as the top of the second drying chamber 6b. Alternatively, the lower portion of the body 2 may be integrally formed with the partitioning plate 4, or the bottom plate 4a may be eliminated, the body 2 may be placed on the ground, or the like. The shape of the housing is rectangular, but it can also be square, polygonal, elliptical or other shapes.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a preferred embodiment of a flipping device of the present invention suitable for use in a unitary form of a bottom dry sludge drying apparatus. The turning device 7 includes a rotating shaft 701 and a plurality of turning assemblies 702, wherein the plurality of turning members 7021-7028 are fixedly coupled to the rotating shaft 701 at an interval in the axial direction and rotatable about the rotating shaft 701. Each flip assembly 702 has three blades or ratchets and each vane or ratchet extends radially outward from the rotating shaft 701. In a plurality of flipping assemblies on the rotating shaft, the blades or ratchets of each flipping assembly are arranged to deflect forward (rightward) or backward (leftward) with respect to the blades or ratchets of the front or rear flipping assembly. angle.

Figure 2 shows a similar construction to the flipping device of Figure 1, wherein more flipping assemblies are shown for the configuration of the display device. As described above, since the adjacent turning members 702 are mutually deflected in the rotating shaft, the plurality of turning members 702 constitute a spiral rotation. Each of the plurality of flipping assemblies shown in Figures 1 and 2 is deflected to the right by an angle a on the axis of rotation 701. Each flipping component such as the flipping assembly 7021, 7022, 7023 is fixed to the rotating shaft by welding 701, and can also be fixed on the rotating shaft by other connecting means such as bolting, riveting or the like. The blades or ratchets on the rear flipping assembly fixed to the rotating shaft 701 and the corresponding vanes or ratchets on the front flipping assembly are mutually deflected by an angle α about the rotating shaft 701, such as the following flipping assembly 7023, 7022 With respect to the front flipping assemblies 7022, 7021, respectively, the axes of rotation about the axis of rotation 701 are offset by the same angle of a[alpha] in the direction of rotation, i.e., the blades or ratchets of the flipping assembly 7023 are relative to the corresponding blades or ratchets of the flipping assembly 7021. The two angles are spaced apart from each other in the circumferential direction around the axis of the rotational axis 701. Accordingly, the corresponding blades or ratchets of the plurality of flipping assemblies 702 on the rotating shaft 701 are sequentially deflected to the right by an angle of a, such that the blades or ratchets of the mutually corresponding flipping assemblies together form a spiral profile that rotates to the right. However, the corresponding blades or ratchets on the adjacent flipping assemblies can be deflected to different angles from each other as needed, for example, the deflection angles of the two front flipping assemblies can be different from the mutual deflection angles of the two rear flipping assemblies. Moreover, the plurality of flipping components on the rotating shaft may be sequentially deflected to the left or alternately deflected to a certain angle.

Figure 3 illustrates another preferred embodiment of the flipping device of the present invention wherein the flipping assembly has an additional configuration. Unlike the apparatus shown in Figures 1 and 2, the corresponding blades or ratchets of the plurality of flipping assemblies 7021-7028 of the flipping device 7 are sequentially deflected to the left by an angle a, thus, the plurality of flipping assemblies on the rotating shaft 701 The blade or ratchet forms a left helix profile. The left-right deflection spiral arrangement of the flipping assembly of the flipping device facilitates the turning, shearing and breaking of the sludge in the drying chamber of the sludge drying device and also the axial movement of the sludge along the rotating shaft.

Figure 4 shows the arrangement of two adjacent flipping assemblies as seen in the axial direction of the rotating shaft of Figure 3. Three blades or ratchets 703 (shown in solid lines) of the flip assembly 702 on the front of the adjacent two flip assemblies 702 on the rotating shaft 701 and three blades or ratchets 703 of the subsequent flip assembly 702 (eg The dotted lines are shown in a staggered arrangement. The centerline of one of the blades or ratchets 703 of the front flip assembly 702 and the centerline of the corresponding vane or ratchet 703 of the rear flip assembly 702 are circumferentially separated from each other by an angle a, wherein two adjacent flips The angle α of the respective vanes or ratchets of the assembly 702 is generally determined by the number of flip assemblies 702 provided on the rotating shaft 701 and the number of vanes or ratchets on each flip assembly 702.

Figure 5 illustrates one of the plurality of flip assemblies of Figure 3. The flip assembly 702 includes a fixed disk 704 and three blades or ratchets 703, wherein each blade or ratchet 703 is secured to the fixed disk 704 and extends radially outward from the central aperture 7041 of the fixed disk. The three blades or ratchets 703 are spaced apart from each other by an angle, for example, the angle θ between the centerlines of every two blades or ratchets 703 may be about 1200. In another embodiment, the angle between the two blades or ratchets 703 may be about 1100, and the angle between the other two adjacent blades or ratchets 703 may be about 1300 and 1200, respectively, that is, The angle between each two blades or ratchets 703 on each flip assembly 702 can be the same or different.

Figure 5a shows a preferred embodiment of a fixed disk for mounting a blade or ratchet on the flip assembly of Figure 5. The fixed disk 704 is mounted on the rotating shaft 701 by a central hole 7041 formed in the intermediate portion thereof and borrowed It is fixed to the rotating shaft by welding. The fixed disk is also fixed to the rotating shaft by other connecting means such as bolting, riveting or the like. The outer periphery of the fixed disk 704 has three Y-shaped radially outward projections 7042. Four holes 7043 are provided on each of the projections 7042 to receive the fasteners to connect the blades or ratchets 703 to the fixed disk 704.

Figure 6 shows a preferred embodiment of one of the blades or ratchets of the flip assembly, while Figures 6a, 6b and 6c show views of the blade or ratchet of Figure 6 in different directions. As shown, the blade or ratchet 703 has a fixed portion 7032 adjacent to the rotating shaft 701 and a torsion portion 7031 extending from the fixed portion, that is, the fixed portion 7032 is a blade or ratchet 703 to be attached to the fixed disk 704. The root or bottom portion, while the torsional portion 7031 is the front or main portion of the blade or ratchet 703 remote from the fixed disk 704, wherein the length of the torsional portion 7031 is significantly longer than the fixed portion 7032 (as indicated by the arrow). The torsion portion 7031 extends torsionally in the left direction from the fixed portion 7032 and its front end is twisted by an angle β with respect to the fixed portion. As shown in Figures 6a-6c, the blade or ratchet has a front end that is twisted to the left. The blank of the blade or ratchet 703 has a rectangular shape of length a, width b and thickness c, wherein the fixed portion 7032 having the length a1 maintains the original rectangular shape, and the twisted portion 7031 gradually changes from the fixed portion to the left on its length a2 The direction is twisted or rotated and twisted to the left by a β angle with respect to the fixed portion at its front end or free end. The angle β may be 5° to 80°, preferably 10° to 70°, preferably 15° to 50°, more preferably 15° to 20°. As shown in Fig. 6c, the front end of the torsion portion 7031 of the rectangular cross section is integrally rotated to the left by a β angle with respect to the fixed portion 7032 in the lateral direction. Similarly, the torsion portion 7031 is at its length The a2 may also be twisted or rotated from the fixed portion to the right direction and rotated at a β angle which is twisted to the right at the front end or the free end thereof with respect to the fixed portion. Four through holes 7033 passing through the thickness c thereof are formed on the main surface A of the fixing portion 7032. When the blade or ratchet 703 is assembled with the fixed disk 704, the connector or fixture can be passed through the through hole 7033 of the fixed portion 7032 of the blade or ratchet 703 and the hole 7043 of the projection 7042 of the fixed disk 704. Connected or fixed together. The number of the through holes 7033 of the fixing portion 7032 and the holes 7043 of the protruding portion 7042 are not limited to four, and may be one or more, that is, determined as needed.

As described above, since the front end of the torsion portion 7031 of the blade or ratchet 703 is rotated by β angle to the left or right with respect to the fixed portion 7032, the main surface A composed of the length a and the width b of the blade or ratchet 703 is as described above. A twist is generated in the twisted portion to form an inclined surface. As shown in FIG. 2, due to the twist of the front end of the blade or ratchet 703 with respect to the rear end thereof, when the flipping member 702 is fixedly mounted on the rotating shaft 701, the direction or method in which the main surface A of the blade or ratchet 703 faces The line direction is at an angle to the axial direction of the rotating shaft 701. Specifically, the direction of the main surface of the blade or ratchet of the flip assembly 702 mounted on the rotating shaft at its tip end forms an angle with the axial direction of the rotating shaft 701, thereby causing the front end of the torsion portion 7031. The sludge near the communication port on the bottom of the drying chamber of the sludge drying device can be scraped off, and at the same time, a part of the sludge can be moved substantially in the axial direction by the inclined main surface. The cross-sectional shape of the blank of the blade or the ratchet 703 may also be an elliptical shape, a circular shape or other regular shape as needed, and may also be long from the fixed portion 7032 to the front end of the torsion portion 7031. Gradually narrow or widen. In addition, a part of the plurality of flipping assemblies 702 on the rotating shaft 701 may have blades or ratchets 703 that are twisted to the left by an angle, and another part of the flipping assembly may have blades or ratchets that are twisted to the right by an angle. Also, on a flip assembly 702, there may be a blade or ratchet that is twisted to the left and twisted to the right by an angle. In addition, the fixing portion 7032 may be directly fixedly coupled to the rotating shaft 701 or fixedly coupled to the rotating shaft 701 by means of, for example, a collar or a bushing, and may be connected by screws, bolts, riveting or welding.

Figures 7 and 7a illustrate another embodiment of a flip assembly having a fixed disk. The flip assembly 702 includes a fixed disk 704 and four blades or ratchets 703, wherein the outer periphery of the fixed disk 704 has four cross-shaped radially outward projections 7042 and a central aperture 7041 in the intermediate portion. The shape of each blade or ratchet 703 is the same or similar to the blade or ratchet shown in Figure 6a, and the through hole 7033 of the fixed portion 7032 corresponds to the hole 7043 on each of the projections 7042 on the fixed disk 704, Thus, the manner in which the fixed disk 704 is coupled to the blade or ratchet 703 is substantially the same as the embodiment illustrated in FIG.

Figures 8 and 8a illustrate yet another embodiment of a flip assembly having a fixed disk. The flip assembly 702 includes a fixed disk 704 and five blades or ratchets 703, wherein the outer periphery of the fixed disk 704 has five star-shaped radially outward projections 7042 and a central aperture 7041 in the intermediate portion. The shape of each blade or ratchet 703 is the same or similar to the blade or ratchet shown in Figure 6a, and the through hole 7033 of the fixed portion 7032 corresponds to the hole 7043 on each of the projections 7042 on the fixed disk 704, Therefore, the fixed disk The manner in which the 704 is coupled to the blade or ratchet 703 is substantially the same as the embodiment illustrated in FIG. As described above, generally for the fixed disk 704 having two or more protrusions 7042, the respective protrusions 7042 are evenly distributed in the circumferential direction on the fixed disk, and the center lines of each of the two protrusions 7042 are mutually connected. The angle θ is spaced, however, the center line of each of the two protrusions 7042 can also be separated by a different angle.

In summary, each flip assembly 702 of the flip device of the present invention can have one or more blades or ratchets. The more blades or ratchets 703 on each flipping assembly 702, the smaller the angle θ between adjacent two vanes or ratchets 703. The spiral line in Fig. 1 shows a path in which the sludge moves forward in the axial direction of the rotating shaft, wherein, under the combined action of the plurality of turning members 702, the sludge moves forward along the rotating shaft in a spiral trajectory mobile. Therefore, the fact that the sludge proposed here moves substantially axially along the rotating shaft means that the sludge as a whole runs in the axial direction.

Fig. 9 shows a preferred embodiment of a bottom dry sludge drying apparatus using a turning device, and Fig. 10 is a transverse sectional view of the sludge drying apparatus of Fig. 9. The sludge drying device 1 includes a casing, wherein the casing includes an upper casing 2, a lower casing 4a, and an upper cover (or cover) 3. The bottom of the upper casing 2 serves as a partition wall 4 that partitions the internal space of the casing into the first drying chamber 6a and the second drying chamber 6b. The upper casing 2 and the upper cover 3 constitute a first drying chamber 6a, and the lower casing 4a and the bottom of the upper casing 2, that is, the partition wall constitute a second drying chamber 6b. A communication port 5 for communicating the first drying chamber 6a and the second drying chamber 6b is formed on the partition wall 4 to enable the drying gas to enter the first drying chamber 6a from the second drying chamber 6b. As shown, The tube first drying chamber 6a and the second drying chamber 6b are arranged one above the other, but other arrangements are also possible. However, the housing may be constructed of a plurality of components or a plurality of ways, for example, the illustrated side wall of the upper housing 2 may be manufactured separately from the partition wall 4, wherein the plate member may be used as a partition plate instead of The partition wall and the partition plate are mounted on the side wall, and the side wall, the partition plate, and the lower case 4a may also be assembled. Further, it is also possible to integrally form the lower casing 4a with the partition wall 4, or to cancel the bottom of the lower casing, to place the lower casing 4a on the ground, or the like. The shape of the housing is rectangular, but it can also be square, polygonal, elliptical or other shapes.

As shown in the figure, the upper cover 3 of the casing is respectively provided with a feed port 8 for introducing sludge to be dried and an exhaust port 10 for exhausting exhaust gas or dry gas after drying the sludge, while being far away A discharge port 9 for the dried sludge is provided on the end wall of the upper casing 2 near the partition wall 4 of the material port 8. In other embodiments, the feed port 8 and the exhaust port 10 for the first drying chamber may be disposed at any position on one of the upper casing 2 and the upper cover 3, that is, the first drying chamber, as needed. Any position of the upper part of 6a. Likewise, the discharge opening 9 can be provided at any position of the circumferential wall of the upper casing 2 including the side walls and the end walls, that is, any position of the circumferential wall of the first drying chamber 6a.

Fig. 11 shows the internal configuration of the sludge drying device of Fig. 9. Two rows of communication ports 5 are formed at the bottom of the first drying chamber 6a, that is, the partition wall 4, and a plurality of spaced-apart communication ports 5 are arranged in each row, but each of the plurality of communication ports in one of the rows is connected. A bridge 401 may be provided above. In addition to the illustrated rectangle, the communication port 5 can have various shapes Shapes, such as trapezoids, rectangles, triangles, arches, circles, and the like. The length direction of each of the communication ports 5 intersects with the longitudinal direction G of the casing, preferably perpendicular to each other, and the plurality of communication ports 5 of each row are arranged to be orthogonal or substantially parallel to the longitudinal direction G of the casing.

Two tumbling means 7a, 7b for tumbling the sludge are arranged in parallel in the longitudinal direction G of the housing in the first drying chamber. Since the two flipping devices 7a, 7b have the same or similar configuration, only one of the flipping devices such as the flipping device 7a will be described in detail. Referring to Figures 9-11, the flipping device 7a has a rotating shaft 701a and a flipping assembly 702a fixed to the rotating shaft 701a for turning the sludge. The flip assembly 702a includes three vanes or ratchets 703a, and each vane or ratchet 703a extends radially outward from the rotational axis 701a. Each flipping assembly takes the form of a fixed disc and blades or ratchets as described in Figures 5 and 5a. However, the length of the plurality of blades or ratchets 703a of each flipping member 702a extending from the rotating shaft 701a may be different from each other, and at least one of the plurality of flipping assemblies 702a may have longer length blades or ratchets Other flipping components may have shorter length blades or ratchets. Preferably, each flipping assembly of the plurality of flipping assemblies 702a on the rotating shaft 701a respectively corresponds to each of the plurality of communicating ports 5, and generally the tip end surface of the blade or ratchet 703a on the flipping assembly The communication port 5 is formed, and the length of the blade or the ratchet 703a is formed such that its front end or the tip end can scrape the sludge in or near the communication port, so that the dry gas in the second drying chamber 6b can smoothly enter through the communication port 5. The first drying chamber 6a.

Although the drying gas (as indicated by the arrow) is separated by the partition 4 The upper communication port 5 enters the first drying chamber 6a from the second drying chamber 6b, and is discharged from the exhaust port 10 after interacting with the sludge to increase the chance of the dry gas coming into contact with the sludge. However, after the sludge to be dried is discharged into the first drying chamber 6a through the feed port 8 and stacked on the partition wall 4, with the turning of the turning members 702a, 702b of the turning devices 7a, 7b and the action of the drying gas A part of the sludge may be dropped from the first drying chamber 6a or leaked into the second drying chamber 6b through the communication port 5. In order to reduce the leakage of the sludge, the bridge member 401 is disposed above the communication port 5 to block the leakage of the sludge through the communication port to the second drying chamber 6b by the bridge member 401. As shown, a bridge 401 may be provided above each of the plurality of communication ports of the other row. The bridge 401 is disposed to straddle the communication port 5 in the longitudinal direction of the communication port and is substantially parallel to the longitudinal direction of the communication port 5. The length of the bridge member 401 is longer than the length of the communication port 5, so that the bridge member 401 can be spanned over the communication port 5 in the longitudinal direction of the communication port 5 like a bridge, and the two ends thereof are respectively fixed to the communication port. On the partition wall 4 near the end edge. Since the intermediate section of the bridge 401 is located above the communication port 5, a side opening 402 is formed between the bridge 401 and the partition wall 4, and a side opening 402 may be formed on one side of the bridge 401 or in each of them. One side opening 402 is formed on one side. Therefore, the opening direction of the side opening 402 is substantially parallel to the axial direction of the rotating shaft or the longitudinal direction G of the housing. The bridge 401 above the communication port 5 is advantageous for reducing the sludge from falling or leaking from the first drying chamber 6a to the second drying chamber 6b, but the sludge accumulated near the side opening also interferes with the drying gas from the second drying. The chamber 6b enters the first drying chamber 6a. In order to promote the flow of the drying gas, each of the flipping assembly 702b of the flipping device 7b The front end of the blade or ratchet 703b, or the side edge of the front end, can scrape the sludge near the side opening 402 of the bridge 401. The spacing of the flipping assemblies 702a, 702b of the flipping devices 7a, 7b on the rotating shafts 701a, 701b can be determined in accordance with the distance between the plurality of communicating ports or the bridges in each row on the partition wall 4 to rotate on the rotating shaft The sludge near each communication port or bridge can be scraped off by the tips of the blades or ratchets of the flip assembly. In short, the position of the communication port or the bridge on the partition wall is associated with the position of the flipping assembly on the rotating shaft, but the number of the flipping assemblies 702a, 702b and the number of the communicating ports 5 or the bridges 401 thereon need not be one. A correspondence. Similarly, the communication port and the bridge member do not have to correspond one-to-one.

As shown in Fig. 10, the partition wall 4 between the first drying chamber 6a and the second drying chamber 6b has a concave upper surface. The upper surface of the partition wall 4 has a concave shape when viewed in a direction transverse to the longitudinal direction G of the casing, that is, a curved section of the concave surface is directed downward from the first drying chamber 6a toward the second drying chamber 6b. Prominently, or in other words, the first drying chamber 6a has a concave bottom. Therefore, the partition wall is shown as a recessed area in the longitudinal direction G of the casing. As shown, the area of the curved wall 4 facing each of the two flipping devices 7a, 7b is concave, preferably each recessed area corresponds to the flipping assemblies 702a, 702b and is concave The area can be circular. The bridge member disposed above the communication port may be a plate member including a flat plate, a curved plate, a herringbone plate, or the like. The bridge 401 of the flat plate is located above the communication port 5 and is parallel to the communication port in the longitudinal direction, thereby forming a side opening 402 between the bridge 401 and the partition wall 4. If the recessed area of the partition wall 4 is a circular arc shape, then the shape of the side opening 402 It looks like a crescent. Therefore, the shape of the side opening 402 depends on the shape of the bridge 401 and the depressed area of the partition wall.

Figure 12 is an enlarged cross-sectional view showing the portion L circled in Figure 9, in which the flipping assembly of the flipping device is shown in the vicinity of a side opening. The bridge member 401 of the flat plate is located above the communication port 5 and has two side openings 402 formed on both sides thereof with the partition wall. The drying gas as indicated by the arrow enters the communication port 5 from below the partition wall 4, that is, the second drying chamber 6b, and needs to be turned to pass through the left or right opening 402 to reach the first drying chamber 6a. Therefore, there is at least one curved path from the communication port to the side opening between the first drying chamber and the second drying chamber in order to reduce leakage of sludge from the first drying chamber to the second drying chamber. The flipping assembly 702b of the flipping device 7b is positioned such that the leading end of its blade or ratchet is scraping the sludge near the one of the side openings 402 between the bridge member 401 and the partition wall 4, while the dirt near the opposite side opening is dirty. The scraping of the mud not only helps to reduce the leakage of the sludge, but also contributes to the flow of the drying gas from the first drying chamber to the second drying chamber. In another embodiment, a scrapable component can be mounted on the blade or ratchet of the flip assembly to scrape the sludge near the side opening with the front end of the scrapable component. In still another embodiment, a side baffle may be provided on one side of the bridge 401 to block one of the side openings, while leaving only the other side opening to allow the drying gas to enter the first drying chamber 6a in one direction . The side dam is disposed in the side opening 402 along the length of the bridge 401 to prevent dry gas from passing therethrough, so that the flipping assembly 702 of the flipping device 7 can only scrape the sludge near the other side opening 402. This arrangement of the baffle allows the drying gas to flow out of the side opening 402 in one direction into the first drying chamber 6a, and It is also possible to prevent the sludge from leaking from the first drying chamber to the second drying chamber from the opposite direction.

Referring to Figures 9-12, in two flipping devices 7a, 7b interlaced with each other, the blade or ratchet scraping front end of the first flipping assembly 702a on the first rotating shaft 701a is adjacent to the second rotating shaft 701b and Located between two adjacent second flip assemblies 702b, and vice versa. This shortens the axial spacing between the first rotational axis 701a and the second rotational axis 701b, and also avoids interference between the first flipping assembly 702a and the second flipping component 702b. In another embodiment, the partition wall 4 may be configured to form only a plurality of communication ports 5 thereon, and the plurality of flipping assemblies 702a, 702b of each of the flipping devices 7a, 7b respectively correspond to the plurality of communication ports 5 The scrapable front end of the blades or ratchets 703a, 703b of the flipping assemblies 702a, 702b can scrape the sludge in or near the communication port 5. It is also possible to provide a bridge 401 above the communication port 5, and the plurality of flipping assemblies 702a, 702b of each of the flipping devices 7a, 7b respectively correspond to the plurality of bridge members 401 so as to flip the blades of the components 702a, 702b or The side edges of the scrapable front ends of the ratchet teeth 703a, 703b can scrape the sludge in the vicinity of the side opening 402 of the bridge member 401 to smoothly flow the dry gas into the first drying chamber 6a. In addition to the scraping action, the blades or ratchets 703a, 703b of the flipping assemblies 702a, 702b also function to shear, break and flip the sludge. In another embodiment, the scrapable member can be mounted on the blade or ratchet so that the front end of the scrapable member can scrape the sludge near the communication port or side opening.

Referring to Figure 9, the rotation axes of the two flipping devices 7a, 7b One end of each of 701a, 701b may be provided with a power input member. The transmission is driven by an external power unit, and the transmission sequentially drives the rotation shafts 701a, 701b to rotate such that a power input member such as a gear or a pulley on the rotation shafts 701a, 701b drives one of the two rotation shafts 701a, 701b, thereby A rotating shaft rotates. The first rotating shaft 701a and the second rotating shaft 701b may be rotated in opposite directions with respect to each other or may be rotated together in the same direction.

Figure 13 shows a preferred embodiment of the rotational trajectory of the blade or ratchet tip on the flipping assembly of the flipping device through the concave portion of the curved dividing wall 4. The blade or ratchet 703 has a circular rotational trajectory, and when the tip end of the blade or ratchet 703 is swept along the curved surface of the partition wall 4, the tip of the blade or ratchet 703 is adjacent to the partition wall 4 near the communication port 5. The distances of the surfaces are approximately equal. Such an arcuate shape facilitates sweeping the side opening 402 at the side edge of the front end of the blade or ratchet of the flipping assembly or the scraping member mounted on the blade or ratchet to clear the vicinity thereof After the sludge, the scraped and turned-up sludge is also more easily returned to the lower position in the first drying chamber 6a along the concave curved contour of the partition wall, thereby improving the contact of the drying gas with the sludge. frequency. Preferably, the contour of the inner surface of the concave portion of the partition wall 4 in the lateral direction and the scrapable tip of the blade or ratchet 703a, 703b of the flipping assembly 702a, 702b of each of the flipping devices 7a, 7b or thereon The rotational trajectory of the tip end of the mounted scrapable member is similar, that is, the radius R of the curved partition wall facing the concave arcuate region of the flipping device is slightly larger than the distance r from the axis of the rotating shaft to the tip end of the flipping assembly.

As shown in Figures 9-11, the second drying chamber 6b includes an air inlet 15 disposed on a side wall of the lower casing 4a, that is, the air inlet 15 is located on the side wall of the second drying chamber 6b for use in drying. The dry gas of the mud enters the second drying chamber 6b, and the air inlet may be one or more. Although the scraping front end of the blade or ratchet 703a, 703b of the flipping assembly 702a, 702b or the front end of the scrapable member fixed to the blade or ratchet is open to the side of the communication port 5 or the bridge 401 above the communication port The scraping of the sludge near 402 helps to reduce the sludge in the first drying chamber 6a from falling into the second drying chamber 6b, but there may still be some sludge passing through the communication port 5 or from the side opening to the communication port. The curved path leaks into the second drying chamber 6b. In order to remove the sludge leaking into the second drying chamber 6b, a cleaning port 15a is provided on the end wall of the lower casing 4a, wherein the cleaning port 15a serves to discharge the sludge deposited in the second drying chamber 6b. Further, a discharge device may be provided at a position near the bottom in the second drying chamber 6b to convey the sludge to the cleaning port 15a at one end of the second drying chamber 6b and to discharge the casing. The second drying chamber 6b is substantially funnel-shaped in the lateral direction, and the side wall thereof, that is, the side wall of the lower casing 4a is gradually narrowed from the partition wall toward the bottom, and the shape at the narrowed portion, that is, the bottom portion is curved or semicircular. Thus, a longitudinal passage of an arcuate cross section is formed at the bottom of the second drying chamber 6b. The sludge leaking from the first drying chamber 6a by the curved path from the side opening to the communication port may be collected into the longitudinal passage of the curved section so as to be conveniently discharged to the casing by the discharge device provided in the longitudinal passage outer. The sludge leaking into the second drying chamber 6b may be dried or secondarily dried by the drying gas entering the second drying chamber 6b to further reduce the moisture content of the sludge. In order to maintain the second drying chamber The relative sealing of 6b can be provided with a movable baffle at the cleaning port 15a so that the dry gas is not leaked, and the movable baffle is opened when the sludge is discharged.

As described above, the flipping device of the present invention is applicable to a single-type bottom drying type sludge drying device by sequentially turning the corresponding blades or ratchets of the plurality of flipping members to the left in the circumferential direction around the rotation axis. Or fixed to the right at an angular interval on the rotating shaft, such that the tips of the blades or ratchets of the plurality of flipping assemblies are presented as a left or right spiral profile. The arrangement of the spiral profile of the flipping assembly of the flipping device enables the flipping device to not only uniformly load the load during the process of turning the sludge, but also to promote the shearing and breaking of the sludge, thereby improving the turning device. Work efficiency and extend service life. By twisting the corresponding blade or the front portion of the ratchet of each of the plurality of flipping assemblies to the left or to the right, not only the flipping device can move the sludge in the axial direction of the rotating shaft, but also The amount of sludge or the ratcheting of the turning component is increased. As shown in Fig. 1, the running direction of the sludge is shown by a broken line, and it can be seen that the running direction of the sludge is similar to the spiral profile of the flipping assembly on the rotating shaft. However, when the flipping device is applied to the sludge drying device as shown in FIGS. 9-11, the direction in which the main surface A of the torsion portion of the blade or the ratchet of the flipping member faces and the axial direction of the rotating shaft The direction is at an angle, so that the main surface A is at an angle to the axial direction of the rotating shaft or the longitudinal direction G of the casing to push the sludge forward, and the pushed sludge can be along the concave arc of the first drying chamber The shaped area falls back to a lower position, thereby achieving both forward movement and flipping, thereby prolonging the contact time of the drying gas with the sludge. Since the flipping device of the present invention not only has shearing, breaking and turning The role of the sludge, but also has the effect of moving and scraping the sludge near the communication port or the side opening, thereby facilitating the change of the particle size of the sludge from large to small and gradually changing from particles to powder and water The rate is effectively reduced.

In the present application, although a plurality of preferred embodiments are listed, the present invention is not limited to the contents mentioned in the specification, and those skilled in the art can fully dry the bottom dry sludge of the present invention by the above design idea of the present invention. Variations and modifications are made to the various components or devices in the device, and such changes or modifications are within the scope of the inventive concept.

7‧‧‧Flip device

701‧‧‧Rotary axis

7021-7028‧‧‧ flipping components

Claims (15)

A flipping device suitable for a sludge drying device, the flipping device comprising: a rotatable shaft, wherein two ends of the rotatable shaft are respectively rotatably disposed at both end walls of a drying chamber of the sludge drying device In the shaft hole; a plurality of flipping assemblies, wherein the plurality of flipping assemblies are fixedly mounted on the rotatable shaft at a certain interval and rotatable together with the rotatable shaft, and the plurality of flipping assemblies Each of the flipping assemblies has at least one blade or ratchet, wherein the at least one blade or ratchet extends radially outward from the axis of the rotatable shaft; and each two adjacent of the plurality of flipping assemblies The corresponding at least one blade or ratchet of the flipping assembly is spaced apart from each other by an angle α in the circumferential direction of rotation of the rotating shaft. The flipping device according to claim 1, wherein the corresponding at least one blade or ratchet of the plurality of flipping assemblies is left or right in a circumferential direction of rotation of the rotating shaft The right is sequentially spaced by an angle α such that the plurality of flipping assemblies have a spiral profile that rotates to the left or to the right. The flipping device of claim 1 or 2, wherein the at least one blade of the plurality of flipping assemblies or the front portion of the ratchet away from the rotating shaft is rotated relative to the front portion thereof The root of the shaft is twisted to the left or right by a beta angle. The flipping device according to any one of claims 1 to 3, wherein at least one of the plurality of flipping assemblies is flipped The assembly has a fixed disk, wherein the at least one blade or ratchet is fixedly coupled to the fixed disk. The flipping device according to any one of claims 1 to 4, wherein the at least one blade or ratchet includes a fixed portion and a twisted portion, wherein the twisted portion is opposite to the fixed portion The angle β is twisted left or right, and the fixed portion is fixedly attached to the fixed disk. The flipping device according to any one of claims 1 to 5, wherein the fixed disk has a protrusion at its outer periphery for connecting the fixed portion of the at least one blade or ratchet And a central hole for mounting the fixed disk to the rotating shaft. The flipping device according to any one of the preceding claims, wherein the at least one blade or ratchet comprises a plurality of blades or ratchets, wherein the plurality of blades or ratchets The angle between the two blades or the ratchets is divided by θ in the circumferential direction of the rotation of the rotating shaft. The flipping device according to any one of claims 1 to 7, wherein a circumference of the rotating shaft is rotated between each of the plurality of blades or ratchets Separate the angles in different directions. The flipping device according to any one of claims 1 to 8, wherein the at least one blade or ratchet comprises a plurality of blades or ratchets, wherein the plurality of blades or ratchets The front portion is twisted at the same angle with respect to the root portion. According to any one of claims 1 to 9 of the patent application scope a flipping device, wherein the at least one blade or ratchet comprises a plurality of blades or ratchets, wherein the front portions of the plurality of blades or ratchets are twisted at the same angle relative to the root and twisted The direction coincides with the direction of rotation of the helical profile of the flipping assembly. The flipping device of any one of clauses 1 to 10, wherein the front portion of the at least one blade or ratchet of at least one of the plurality of flipping assemblies is opposite The direction in which the root is twisted is different from that of other flipping assemblies. A sludge drying device using the tumbling device according to any one of the preceding claims, wherein the sludge drying device comprises: a casing, wherein a partition wall is provided in the casing to a space inside the casing is partitioned into a first drying chamber and a second drying chamber, and a plurality of communication ports for communicating the first drying chamber and the second drying chamber are formed on the partition wall; a feed port for the sludge to be dried in the upper portion of the first drying chamber, and an exhaust port for discharging the dry gas after drying the sludge, and a space provided on the circumferential wall of the first drying chamber a discharge port of the sludge after drying; at least one air inlet for drying gas to be dried sludge disposed on a side wall of the second drying chamber; and an air inlet disposed in the first drying chamber a flipping device for flipping sludge, the flipping device comprising a rotating shaft and at least one flipping assembly disposed on the rotating shaft, wherein the at least one flipping assembly scrapes at least one of the plurality of communicating ports Sludge near the communication port. The sludge drying apparatus according to claim 12, wherein the front end of the at least one blade or the ratchet is provided with a scraping member, wherein the scraping member is configured to be scraped off in the drying Sludge in or near the communication port formed on the bottom of the chamber. The sludge drying apparatus according to claim 12, wherein the bridge member is disposed above the at least one communication port, wherein the bridge member and the partition wall form at least One side opening. The sludge drying apparatus according to any one of claims 12 to 13, wherein a side edge of a front end of the at least one blade or ratchet is configured to scrape the at least one side opening Near the sludge.