A vertical spiral shaft lamination spiral solid-liquid separator

Abstract

A vertical spiral shaft lamination spiral solid-liquid separator, comprising: a filter cavity, a spiral shaft, a driving device, and a plurality of support plates; the filter cavity, the spiral shaft and the driving device are supported and positioned by the plurality of support plates; the spiral shaft penetrates the filter cavity; the spiral shaft is two or more, and is arranged vertically from top to bottom in the filter cavity; the spiral blades of adjacent two spiral shafts are embedded with each other; and the shape of each ring piece in the first closed ring piece group and the second closed ring piece group matches the shape of the vertical spiral shaft. The vertical spiral shaft design of the present application makes the solid-liquid separator have a smaller floor area, can be designed side by side with multiple dewatering machines, greatly improves the space utilization, increases the water passage area on both sides of the filter cavity, makes the filtered water be discharged in time, and improves the work efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of solid-liquid separation machines, and particularly relates to a laminated spiral solid-liquid separation machine with vertical spiral shafts. BACKGROUND

[0002] Chinese patent 200510054707.1 (Comparative Document 1) discloses a non-wearing laminated spiral solid-liquid separation machine. The fixed ring and the movable ring are stacked together to form a cavity structure, and a spiral shaft penetrates through the cavity structure. The movable ring is driven to move up and down by an external drive. For some materials with high fiber content and easy to be hardened, the material is easy to hold the spiral shaft, which affects the smooth advancement of the material, reduces the processing capacity, and easily causes overload or mechanical failure. The material near the shaft center has a long water discharge channel, which causes the water content to be unable to further decrease.

[0003] Chinese patent 201710239689.7 (Comparative Document 2) discloses a multi-shaft laminated spiral solid-liquid separation machine with pendulum motion. Two or more spiral shafts are used instead of one spiral shaft. The spiral shafts are designed side by side. The fixed ring and the movable ring are tightly attached to the outer periphery of the spiral shaft, so that the entire cavity is flat, and the filter water area at the bottom is increased, which is beneficial to the discharge of water. However, this technical solution with spiral shafts arranged side by side (horizontally) still has the following disadvantages: 1. Since the spiral shafts are not sealed with the feed tank, no continuous positive pressure can be generated. When the resistance of the material advancing in the cavity is too large, the subsequent material advances slowly or even cannot continuously advance, which reduces the processing capacity of the material, the pressure in the cavity cannot be accumulated to reduce the water content, and even the material in the cavity can be blocked. 2. The spiral shafts arranged side by side increase the floor area of the dewatering machine. 3. The water discharge channels on both sides of the filter cavity are less, and the water filtration is not smooth enough. 4. The closed ring piece is wide on both sides in the horizontal direction, and the supporting force is weak, which can easily cause deformation or even breakage of the closed ring piece.

[0004] Chinese utility model patent 201921703557.6 (Comparative Document 3) discloses a laminated spiral solid-liquid separation machine and a mixing tank with reciprocating motion. It also uses a two-spiral-shaft side-by-side design, which still has the above-mentioned disadvantages of Comparative Document 2.

[0005] Chinese patent 201710240104.3 (Comparative Document 4) discloses a laminated spiral solid-liquid separation machine with torsional pendulum motion. In the specific embodiment, it also involves a two-spiral-shaft side-by-side design, which still has the above-mentioned disadvantages of Comparative Document 2. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a laminated spiral solid-liquid separation machine with vertical spiral shafts, which has a more reasonable structure design and higher working efficiency.

[0007] The present application is implemented as follows:

[0008] A vertical spiral shaft lamination spiral solid-liquid separator, comprising: a filter cavity, a spiral shaft, a driving device, and a plurality of support plates;

[0009] The filter cavity, the spiral shaft and the driving device are supported and positioned by the plurality of support plates;

[0010] The spiral shaft penetrates the filter cavity;

[0011] The filter cavity has a feed end and a discharge end at two ends thereof;

[0012] The filter cavity comprises at least two groups of closed ring piece groups, the two groups of closed ring piece groups comprising: a first closed ring piece group and a second closed ring piece group having inconsistent motion states; in the two groups of closed ring piece groups, a gasket is arranged between adjacent two closed ring pieces of at least one group of closed ring piece groups, the gasket having a thickness greater than that of another group of closed ring pieces, so that a filter gap is formed between the adjacent closed ring pieces;

[0013] The first closed ring piece group moves by driving of the driving device, the second closed ring piece group is connected to the support plate to remain stationary or moves by driving of the driving device to generate relative displacement with the first closed ring piece group, so that the filter gap remains unobstructed;

[0014] The spiral shaft is two or more and is arranged vertically from top to bottom in the filter cavity; helical blades of adjacent two spiral shafts are embedded in each other; each ring piece in the first closed ring piece group and the second closed ring piece group has a shape matching an outer shape of the vertically arranged spiral shaft.

[0015] Further, an upper half of the support plate at a tail feed end of the filter cavity is connected to a cylindrical feed tank, and a feed port is arranged on the feed tank;

[0016] An end of the uppermost spiral shaft extends into the feed tank, and a segment of the spiral shaft in the feed tank is characterized in that: a baffle is arranged between a starting point and an ending point of a first helical blade from the end of the spiral shaft to divide the spiral shaft into two regions, one side edge of the baffle is connected to a central shaft of the spiral shaft, and the other side edge is in close contact with a tank wall of the cylindrical feed tank to form a seal; an outer edge of the first helical blade is in close contact with an inner wall of the tank body of the cylindrical feed tank; and a distance from the starting point to the ending point of the first helical blade is greater than an axial width of the feed port of the feed tank;

[0017] An end of the lower spiral shaft is mounted on a support plate sleeve at the tail of the filter cavity.

[0018] Further, the baffle of the screw shaft section in the feed tank is pushed forward by the rotation of the screw shaft, and the direction of the pushing is front, and vice versa. The front of the baffle faces the normal rotation direction of the screw shaft, and the back of the baffle is in a cylindrical structure with the area between the end point and the start point of the first spiral blade, which is in close contact with the inner wall of the cylindrical feed tank.

[0019] Further, the upper half of the support frame of the tail end of the filter cavity is connected with a screw pump.

[0020] The end of the uppermost screw shaft is installed on a flange plate at the tail end of the filter cavity. The flange plate is a hollow structure, and one end of the screw pump is connected to the flange plate. The material enters the filter cavity through the flange plate after being transported by the screw pump from the feed inlet of the screw pump.

[0021] The end of the lower screw shaft is installed on the shaft sleeve of the support plate at the tail end of the filter cavity.

[0022] Further, the driving device comprises:

[0023] The driving device comprises a main driving rod, a secondary driving rod, and a positioning rod.

[0024] The main driving rod is connected with an independent driving motor or connected with the screw shaft through a transmission mechanism.

[0025] The main driving rod is supported by the plurality of support plates, and one or more than one eccentric device is arranged on the main driving rod.

[0026] The main driving rod is above the secondary driving rod. Each eccentric device is connected with the secondary driving rod through a driving piece. The secondary driving rod is sleeved on the upper end of the first closed ring piece group. The lower end of the first closed ring piece group penetrates the positioning rod, connecting all the first closed ring pieces into one.

[0027] The transmission mechanism or the driving motor drives the main driving rod to move. The eccentric device on the main driving rod drives the secondary driving rod to make reciprocating circular motion in the accommodation hole of the support plate, and drives the positioning rod to make reciprocating vertical motion in the vertical limiting hole of the support plate, thereby driving the upper end of the first closed ring piece group to make reciprocating circular motion, and driving the lower end of the first closed ring piece group to make reciprocating vertical motion.

[0028] Further, the inner contour of each ring piece in the first closed ring piece group and the second closed ring piece group has protrusions and grooves.

[0029] Further, the discharge end of the filter cavity is provided with a sealing plate for sealing, and the sealing plate is connected with a discharge pipeline, and a valve for controlling discharge is arranged on the discharge pipeline.

[0030] The advantages of the present application are as follows: 1. The structure of the screw shaft section in the feed tank at the tail end of the upper screw shaft is improved, or the screw shaft pump is connected at the tail end of the upper screw shaft, so that a continuous positive pressure is generated in the filter cavity, and the material continuously moves to the discharge end, and the work is more smooth. 2. The vertical arrangement of the screw shaft makes the solid-liquid separator occupy a smaller area, and multiple dewatering machines can be arranged side by side, greatly improving the space utilization. 3. The water passage area on both sides of the filter cavity is increased, so that the filtered water is discharged in time, and the work efficiency is improved. 4. Because the inner circle of the ring piece adopts an intermittent groove design, the inner wall of the cavity forms a non-smooth structure, which avoids the rotation of the material with the screw shaft, makes the material more easily advance, and improves the processing capacity. 5. Because there is a continuous positive pressure in the filter cavity, the discharge end is sealed by a sealing plate, which can generate pressure, further reducing the moisture content of the material in the filter cavity, and when discharge is needed, the discharge pipe valve on the sealing plate can be opened for discharge. Compared with the back pressure plate method of the prior art, the structure and operation are simpler and more convenient. 6. The driving devices such as the main driving rod and the eccentric bearing are arranged at the uppermost part of the filter cavity, which not only prevents the driving devices from being eroded by the filtrate for a long time, further reduces the failure rate of the driving devices, and prolongs the service life of the driving devices, but also facilitates observation and maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0031] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0032] Figure 1 is the front view of the first embodiment of the present application.

[0033] Figure 2 is the top view of the first embodiment of the present application.

[0034] Figure 3 is the right view of the first embodiment of the present application.

[0035] Figure 4 is the structure diagram of the first closed ring piece of the present application.

[0036] Figure 5 is the structure diagram of the second closed ring piece of the present application. Figure 4 is the enlarged diagram of A part in

[0037] Figure 6 is the structure diagram of the second closed ring piece of the present application.

[0038] Figure 7 is the enlarged diagram of B part of Figure 6 ​

[0039] Figure 8 is a structural schematic diagram of a transmission movable ring piece in the first closed ring piece group of the present application.

[0040] Figure 9 is a C part enlarged schematic diagram of Figure 8

[0041] Figure 10 is a structural schematic diagram of a support plate of the present application.

[0042] Figure 11 is a structural schematic diagram of a spiral shaft of the first embodiment of the present application.

[0043] Figure 12 is a front view of the second embodiment of the present application.

[0044] Figure 13 is a top view of the second embodiment of the present application.

[0045] Figure 14 is a structural schematic diagram of a spiral shaft located above in the second embodiment of the present application.

[0046] Figure 15 is a structural schematic diagram of a spiral shaft located above in the third embodiment of the present application.

[0047] Figure 16 is a front view of the fourth embodiment of the present application.

[0048] Figure 17 is a top view of the fourth embodiment of the present application.

[0049] Figure 18 is an A-A sectional view of Figure 17 DETAILED DESCRIPTION

[0050] First embodiment:

[0051] As shown in Figures 1 to 11 , a vertical spiral shaft laminated spiral solid-liquid separator includes a filter cavity 1, a spiral shaft 2, a driving device 3, and a plurality of support plates 4.

[0052] The filter cavity 1, the spiral shaft 2, and the driving device 3 are supported and positioned by the plurality of support plates 4; the spiral shaft 2 penetrates the filter cavity 1; and the two ends of the filter cavity 1 are respectively an inlet end 11 and an outlet end 12.

[0053] ​​The filter cavity 1 comprises two sets of closed ring groups, the first closed ring group 13 is driven to move by the driving device 3, and the second closed ring group 14 is connected to the support plate 4 and remains stationary. The adjacent two closed rings of the second closed ring group 14 are provided with a gasket (not shown in the figure), and the thickness of the gasket is greater than the thickness of the first closed ring 13, so that a filter gap is formed between the adjacent first closed ring 13 and the second closed ring 14.

[0054] The two helical shafts 2 are vertically arranged in the filter cavity 1 from top to bottom; the helical blades of the two helical shafts 2 are embedded in each other; the shape of each ring in the first closed ring group 13 and the second closed ring group 14 matches the shape of the two vertically arranged helical shafts. The inner contour of each ring in the first closed ring group 13 and the second closed ring group 14 has protrusions and grooves, and the material is driven by the helical shaft 2, and is subjected to resistance from the inner wall of the filter cavity 1, so that the material is more easily pushed forward. The helical pitch of the helical shaft 2 gradually decreases from the feeding end 11 to the discharging end 12. In specific practice, the number of helical shafts 2 can also be more than two.

[0055] In this embodiment, the driving device 3 comprises a main driving rod 31, a secondary driving rod 32, a positioning rod 33, a driving motor 30, etc.

[0056] The driving motor 30 drives the helical shaft 2 to rotate, and the helical shaft 2 drives the main driving rod 31 to rotate through a transmission mechanism 34, which can be a gear transmission, a chain wheel transmission, or a belt transmission. The main driving rod 31 can also be driven by another independent driving motor, and does not necessarily have to be driven through the driving motor 30 driving the helical shaft 2 through the transmission mechanism 34.

[0057] The main driving rod 31 is located above the filter cavity 1 and is supported by a plurality of support plates 4, and a plurality of eccentric bearings 35 are also arranged on the main driving rod 31 at intervals.

[0058] The main driving rod 31 is located above the secondary driving rod 32, and each eccentric bearing 35 is connected to the secondary driving rod 32 through a driving piece 36, the secondary driving rod 32 is sleeved on the upper end of the first closed ring 13, and the lower end of the first closed ring group 13 penetrates the positioning rod 33 to connect all the first closed ring groups 13 into one body. The driving piece 36 is connected to the first closed ring 13, and the first closed ring 13 with the driving piece 36 is called a transmission movable ring 131.

[0059] The support plate 4 is provided with a straight limiting hole 41, a let-out hole 42, a support hole 43 for connecting the second closed ring group 14, a cavity hole 44 for accommodating the filter cavity 1, and a fixing hole 45 for fixing the main driving rod 31.

[0060] The transmission mechanism 34 drives the main drive rod 31 to move. The eccentric device 35 on the main drive rod 31 drives the auxiliary drive rod 32 to perform reciprocating circular motion in the clearance hole 42 on the support plate 4. The auxiliary drive rod 32 drives the transmission movable ring plate 131 to move. The transmission movable ring plate 131 drives all the first closed ring plates 13 to move, which in turn drives the positioning rod 33 to perform reciprocating up and down linear motion in the linear limiting hole 41 of the support plate 4. Thus, the upper end of the first closed ring plate group 13 performs reciprocating circular motion, and the lower end performs reciprocating up and down linear motion.

[0061] In practice, the movement mode of the first closed ring plate group 13 is not limited to the above-mentioned movement mode, but can also be other modes, such as the overall up-and-down linear movement in comparison with Reference 1, the linear movement at one end and the pendulum movement at the other end in comparison with Reference 2, the overall reciprocating circular movement in comparison with Reference 3, and the torsional pendulum movement in comparison with Reference 4, etc.

[0062] Workflow: Material enters the filter chamber 1 through the feed inlet 51 of the feed box 5. It is continuously propelled forward by the two upper and lower spiral shafts inside the filter chamber 1. Even if it encounters materials that are prone to tangling or caking, they will be smoothly propelled forward due to the mutual scraping between the two spiral shafts. During the material conveying process, the filter chamber 1 is displaced by the movement of the first closed ring plate group 13 and the adjacent closed ring plates, keeping the filter gaps unobstructed. The filtrate can then be discharged from the inside of the filter chamber 1 through the filter gaps, and the filter residue is discharged from the discharge end.

[0063] Second embodiment:

[0064] like Figures 12 to 14 As shown, in this embodiment, the upper half of the support plate 4 at the feed inlet 11 of the filter chamber 1 is connected to a cylindrical feed box 5. The end of the upper spiral shaft 2 extends into the cylindrical feed box 5. The spiral shaft section inside the feed box is characterized by: a baffle 6 dividing the spiral shaft 2 into two regions between the starting point 211 and the ending point 212 of the first spiral blade 21 from the end of the spiral shaft 2; one side of the baffle 6 is connected to the central axis of the spiral shaft 2, and the other side is fitted with the box wall of the cylindrical feed box 5 to form a seal; the outer edge of the first spiral blade 21 is fitted with the inner wall of the cylindrical feed box 5; the distance from the starting point 211 to the ending point 212 of the first spiral blade 21 is greater than the axial width of the feed inlet 51 of the feed box 5. The end of the lower spiral shaft 2 is mounted on the bushing of the support plate 4 at the tail of the filter chamber 1.

[0065] The discharge end 12 of the filter chamber 1 is sealed with a sealing plate 71. The sealing plate 71 is connected to the discharge pipe 72, and a valve 73 for controlling the discharge is provided on the discharge pipe 72.

[0066] Work flow: material enters the filter cavity 1 through the inlet of the cylindrical feed tank 5, and is continuously pushed forward by the two spiral shafts 2 in the filter cavity 1. Even if the material is easy to entangle and harden, it will be smoothly pushed forward due to the mutual scraping between the two spiral shafts 2. During the material conveying process, the filter cavity 1 is displaced from the adjacent closure ring due to the movement of the first closure ring piece group 13, so that the filter gap remains unobstructed, and the filtrate can be discharged from the inside of the filter cavity 1. The baffle 6 in the feed tank 5 causes the material to produce continuous positive pressure, and the dewatered material reaches the discharge end 12 and further reduces the water content after pressure accumulation in the discharge pipe 72. The valve 73 is used to adjust the discharge time and discharge amount of the material.

[0067] Third embodiment:

[0068] The difference between this embodiment and the second embodiment is that the back of the baffle 6 and the area formed between the end point 212 and the starting point 211 of the first spiral blade 21 form a cylindrical body 61, which is attached to the inner wall of the cylindrical feed tank 5, as shown in Figure 15 .

[0069] The baffle 6 in the cylindrical feed tank 5 rotates with the spiral shaft 2, and the direction of the material pushing forward is the front, and vice versa. The cylindrical body 61 on the back of the baffle 6 can be a hollow cylindrical body or a solid cylindrical body, which can produce continuous positive pressure on the material and avoid the material staying in the area where the cylindrical body 61 is located.

[0070] Fourth embodiment:

[0071] As shown in Figures 16 to 18 , the difference between this embodiment and the second embodiment is that the upper half of the support plate 4 at the tail end of the filter cavity 1 is connected to a screw pump 8. The end of the upper spiral shaft 2 is installed on a flange plate 9 at the tail end of the filter cavity 1; the flange plate 9 is a hollow structure, and one end of the screw pump 8 is connected to the flange plate 9; the material enters from the inlet 81 of the screw pump 8, passes through the screw pump 8, and enters the filter cavity 1 through the flange plate 9.

[0072] The main drive rod 31 of the driving device in this embodiment is located below the filter cavity 1, and its movement mode is the same as that of the comparative document 2.

[0073] Workflow: The material enters the filter cavity 1 through the feed port 81 of the screw pump 8, and is continuously pushed forward by the two spiral shafts 2 in the filter cavity 1. Even if it encounters materials that are easy to entangle and harden, it will still be smoothly pushed forward due to the mutual scraping between the two spiral shafts 2. In the process of material transportation, the filter cavity 1 is displaced from the adjacent closure ring due to the movement of the first closure ring piece group 13, keeping the filter gap unobstructed, so that the filtrate can be discharged from the inside of the filter cavity 1 to the outside through the filter gap. The screw pump 8 generates a continuous positive pressure on the material, and the dewatered material reaches the discharge end 12, further reduces the water content after accumulating pressure in the discharge pipe 72, and then adjusts the discharge time and discharge amount of the material through the valve 73.

[0074] The above embodiments and drawings are not limited to the product form and style of the present application, and any appropriate changes or modifications made by those skilled in the art shall be considered as not departing from the scope of the patent of the present application.

Claims

1. A vertical spiral shaft lamination spiral solid-liquid separator, characterized in that: The utility model relates to a filter device, comprising: a filter cavity, a spiral shaft, a driving device, and a plurality of support plates; the filter cavity, the spiral shaft, and the driving device are supported and positioned by the plurality of support plates; the spiral shaft penetrates the filter cavity; the filter cavity has a feed end and a discharge end at two ends thereof; characterized in that the filter cavity comprises at least two groups of closed ring plates, the two groups of closed ring plates comprising a first group of closed ring plates and a second group of closed ring plates having inconsistent movement states; in the two groups of closed ring plates, a gasket is arranged between adjacent two closed ring plates of at least one group of closed ring plates, the thickness of the gasket being greater than the thickness of the other group of closed ring plates, so that a filter gap is formed between the adjacent closed ring plates; the first group of closed ring plates moves by driving of the driving device, the second group of closed ring plates is fixed or moves by driving of the driving device to generate relative displacement with the first group of closed ring plates, so that the filter gap remains unobstructed; the spiral shaft is two or more and is arranged vertically from top to bottom in the filter cavity; the spiral blades of adjacent two spiral shafts are embedded in each other; the shape of each ring plate in the first group of closed ring plates and the second group of closed ring plates matches the shape of the vertically arranged spiral shaft; the upper half of the support plate at the tail feed end of the filter cavity is connected to a cylindrical feed tank, and a feed inlet is arranged on the feed tank; the end of the uppermost spiral shaft extends into the feed tank, and the spiral shaft segment in the feed tank is characterized in that a baffle is arranged between the start point and the end point of the first spiral blade from the end of the spiral shaft to divide the spiral shaft into two regions, one side edge of the baffle is connected to the central shaft of the spiral shaft, and the other side edge is in close contact with the tank wall of the cylindrical feed tank to form a seal; the outer edge of the first spiral blade is in close contact with the inner wall of the tank body of the cylindrical feed tank; the distance between the start point and the end point of the first spiral blade is greater than the axial width of the feed inlet of the feed tank; the end of the lower spiral shaft is mounted on the support plate sleeve at the tail of the filter cavity.

2. A vertical spiral shaft lamination spiral solid-liquid separator as claimed in claim 1, wherein: the baffle of the spiral shaft segment in the feed tank rotates with the spiral shaft, the direction of pushing forward the material is the front, and vice versa; the front of the baffle faces the normal rotation direction of the spiral shaft, and the back of the baffle is in close contact with the columnar structure formed between the end point and the start point of the first spiral blade.

3. A vertical spiral shaft lamination spiral solid-liquid separator as claimed in claim 1, wherein: the driving device comprises: a main driving rod, a vice driving rod, and a positioning rod; the main driving rod is connected to an independent driving motor or connected to the spiral shaft through a transmission mechanism; the main driving rod is supported by the plurality of support plates; one or more than one eccentric device is arranged on the main driving rod; The main driving rod is above the sub-driving rod; each eccentric device is connected with the sub-driving rod through a driving piece; the sub-driving rod is sleeved on the upper end of the first closed ring piece group; the lower end of the first closed ring piece group penetrates the positioning rod, connecting all the first closed ring piece groups into one body; The transmission mechanism or driving motor drives the main driving rod to move, the eccentric device on the main driving rod drives the sub-driving rod to make reciprocating circular motion in the accommodation hole on the support plate, and drives the positioning rod to make reciprocating linear motion in the linear limiting hole of the support plate, thereby driving the upper end of the first closed ring piece group to make reciprocating circular motion, and the lower end of the first closed ring piece group to make reciprocating linear motion.

4. A vertical spiral shaft lamination spiral solid-liquid separator as claimed in claim 1, wherein: The inner contour of each ring piece in the first closed ring piece group and the second closed ring piece group has a protrusion and a groove.

5. A vertical spiral shaft lamination spiral solid-liquid separator as claimed in claim 1, wherein: The outlet end of the filter cavity is provided with a sealing plate for sealing, the sealing plate is connected with an outlet pipeline, and a valve for controlling outlet is arranged on the outlet pipeline.

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