A slag extruder

Abstract

The present invention provides a slag extruder, comprising: a main frame, a spiral device, a transmission device and a plug device, the main frame is provided with a feed port, a discharge port, a water outlet and a screen drum, the feed port and the discharge port are respectively arranged on both sides of the main frame, the water outlet is arranged at the bottom of the main frame, the screen drum is arranged in the main frame, and the spiral device is located inside the screen drum; the spiral device comprises a main shaft and a spiral blade, the spiral blade is fixedly connected to the main shaft; the transmission device is connected to the end of the main shaft to drive the main shaft to rotate; the plug device comprises a driving assembly and a pressing plate, the number of pressing plates is multiple, the multiple pressing plates are arranged around the main shaft, a discharge channel is formed between the pressing plate and the main shaft, and the driving assembly is used to drive the pressing plate to move and change the size of the discharge channel. By adjusting the size of the discharge channel to change the discharge speed of the mixture, the dehydration requirements of the mixture with different solid-liquid ratios can be met, the properties of the treated materials are basically consistent, and the equipment runs efficiently and reliably.

Description

Technical Field

[0001] The invention relates to the technical field of dehydration equipment, in particular to a slag extruder. Background Art

[0002] At present, papermaking enterprises usually use inclined screens to process the tailings at the end of pulping, filter out some of the water, and then load them for transportation. However, the inclined screen occupies a large area, and the dehydration effect is not very good, which makes transportation difficult. In addition, with the strengthening of people's environmental awareness, the feces produced by animals in animal husbandry cannot be landfilled at will, and must be transported to a designated location for unified treatment, but it is difficult to directly transport fresh animal feces. Therefore, it has become an urgent problem to design a dehydration equipment that is easy to install and fix, and can adapt to a variety of moisture contents and different properties. Summary of the invention

[0003] Based on this, it is necessary to provide a slag squeezer to address the problem of poor dehydration effect of current dehydration equipment.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A slag extruder comprises: a main frame, a spiral device, a transmission device and a material plug device, wherein the main frame is provided with a feed port, a discharge port, a water outlet and a screen drum, wherein the feed port and the discharge port are respectively arranged on both sides of the main frame, the water outlet is arranged at the bottom of the main frame, the screen drum is arranged in the main frame, and the spiral device is located inside the screen drum; the spiral device comprises a main shaft and spiral blades, and the spiral blades are fixedly connected to the main shaft; the transmission device is connected to the end of the main shaft to drive the main shaft to rotate; the material plug device comprises a driving assembly and a pressing plate, wherein the number of the pressing plates is plural, and the plurality of pressing plates are arranged around the main shaft, a discharge channel is formed between the pressing plate and the main shaft, and the driving assembly is used to drive the pressing plate to move and change the size of the discharge channel.

[0006] In one embodiment, the driving assembly includes a power unit, a transmission plate and a crank, wherein two ends of the power unit are respectively connected to the transmission plate and the transmission plate, and the power unit moves to make the transmission plate approach or move away from the main frame; one end of the crank is rotatably connected to the main frame, and the other end is provided with a roller, the roller abuts against the transmission plate, and the pressure plate is fixedly connected to the crank; the power unit is a pneumatic airbag, a cylinder, a hydraulic cylinder or an electric motor.

[0007] In one embodiment, the pressing plate is in the shape of an arc-shaped sheet.

[0008] In one of the embodiments, the screen drum is detachably connected to the main frame, and anti-rotation flanges are provided at both ends of the screen drum, and the anti-rotation flanges are fixed to the main frame via anti-rotation pins.

[0009] In one of the embodiments, a wear-resistant layer is provided on the end surface of the spiral blade close to the screen drum; the thickness of the wear-resistant layer close to the discharge port is greater than the thickness of the wear-resistant layer close to the feed port.

[0010] In one of the embodiments, a wear-resistant layer is provided on the pulp-facing surface of the spiral blade facing the discharge port, and the thickness of the wear-resistant layer gradually increases along the direction from the main axis to the screen drum.

[0011] In one embodiment, a notch is provided on the end surface of the spiral blade close to the screen drum.

[0012] In one of the embodiments, a notch is provided on the inner surface of the screen drum, and the size of the notch gradually increases along the rotation direction of the main shaft.

[0013] In one of the embodiments, a water inlet is provided on the top of the main frame.

[0014] In one of the embodiments, an overflow trough is provided below the water inlet.

[0015] Based on the above embodiments, the present invention has at least the following advantages:

[0016] By setting up a movable pressure plate, the size of the discharge channel can be adjusted in real time to adapt to materials with different moisture contents and properties. Through automatic control, continuous and efficient processing can be achieved, and the properties of the processed materials remain basically consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a slag extruder provided in one embodiment of the present invention;

[0018] Figure 2 for Figure 1 A partial enlarged view of a plug device in a slag extruder provided in an embodiment;

[0019] Figure 3 A cross-sectional view of a spiral blade in a slag extruder provided in one embodiment of the present invention, wherein the left side of the figure is the direction of the discharge port;

[0020] Figure 4 An axial view of a spiral blade in a slag extruder provided by an embodiment of the present invention;

[0021] Figure 5 A cross-sectional view of a screen drum in a slag extruder provided in one embodiment of the present invention.

[0022] in:

[0023] Main frame 100; feed inlet 110; discharge outlet 120; water outlet 130; screen drum 140; notch A141; water inlet 150; overflow trough 160; spiral device 200; main shaft 210; spiral blade 220; wear-resistant layer A221; wear-resistant layer B222; first area 223; second area 224; third area 225; notch B226; transmission device 300; plug device 400; pressure plate 410; power unit 420; transmission plate 430; crank 440; roller 441. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0026] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] The present invention provides a slag extruder, such as Figure 1 and Figure 2As shown, it includes: a main frame 100, a spiral device 200, a transmission device 300 and a plug device 400. The main frame 100 serves as the installation basis of other components. The main frame 100 is a shell, and a relatively isolated cavity is formed inside it. The main frame 100 is provided with a feed inlet 110, a discharge port 120, a water outlet 130 and a screen drum 140. The feed inlet 110 and the discharge port 120 are respectively arranged on both sides of the main frame 100, the water outlet 130 is arranged at the bottom of the main frame 100, the screen drum 140 is arranged in the main frame 100, and the spiral device 200 is located inside the screen drum 140. The solid-liquid mixture first enters the screen drum 140 from the feed port 110, and then moves from the feed port 110 to the discharge port 120 under the push of the spiral device 200, wherein most of the solid material is discharged from the discharge port 120, and most of the liquid material flows through the sieve holes on the screen drum 140 and is discharged from the water outlet 130, thereby achieving solid-liquid separation.

[0028] The spiral device 200 includes a main shaft 210 and a spiral blade 220 , wherein the spiral blade 220 is fixedly connected to the main shaft 210 ; the transmission device 300 is connected to the end of the main shaft 210 to drive the main shaft 210 to rotate, and the rotation of the main shaft 210 drives the spiral blade 220 to rotate, and the material moves under the push of the spiral blade 220 .

[0029] The plug device 400 includes a driving assembly and a pressing plate 410. There are multiple pressing plates 410, which are arranged around the main shaft 210. A discharge channel is formed between the pressing plate 410 and the main shaft 210. The driving assembly is used to drive the pressing plate 410 to move and change the size of the discharge channel. For materials that are difficult to dehydrate, the size of the discharge channel can be reduced, so that it is more difficult for the material to pass through the discharge port 120 and the pressure is increased to fully remove the moisture; for materials that are easier to dehydrate, the size of the discharge channel can be increased, so that the material can pass through the discharge port 120 faster and the production rate can be increased. By adjusting the size of the discharge channel, it is possible to dehydrate materials with different properties or different moisture contents, and the properties of the dehydrated materials remain basically consistent.

[0030] In one embodiment, the driving assembly includes a power unit 420, a transmission plate 430 and a crank 440. The two ends of the power unit 420 are respectively connected to the main frame 100 and the transmission plate 430. The power unit 420 moves to make the transmission plate 430 approach or move away from the main frame 100. One end of the crank 440 is rotatably connected to the main frame 100, and the other end is provided with a roller 441, the roller 441 abuts against the transmission plate 430, and the pressure plate 410 is fixedly connected to the crank 440. The power unit 420 is a pneumatic airbag, a cylinder, a hydraulic cylinder or an electric motor. Figure 1In the embodiment, the power unit 420 is an airbag, and the air intake of the airbag pushes the transmission plate 430, and the transmission plate 430 pushes the roller 441 to drive the crank 440 to rotate, so that the pressure plate 410 moves toward the main shaft 210, and the size of the feed channel is reduced; when the channel size needs to be increased, the airbag can be deflated.

[0031] In one embodiment, the pressing plate 410 is in the shape of an arc-shaped sheet. Figure 1 In the embodiment, the pressing plates 410 are in the shape of arc-shaped sheets, and there are four of them, which are evenly arranged around the axis of the main shaft 210 .

[0032] In one embodiment, the screen drum 140 is detachably connected to the main frame 100, and the screen hole sizes and arrangement densities on different screen drums 140 are different, which can be adapted to the dehydration of materials with different properties or different moisture contents. The screen drum 140 can be fixed to the main frame 100 by an anti-rotation flange 170 and an anti-rotation pin 180.

[0033] In one embodiment, there are two spiral blades 220 on the main shaft 210, and a double spiral design is adopted, which can effectively improve the material conveying capacity.

[0034] In one embodiment, if Figure 3 As shown, the end surface of the spiral blade 220 close to the screen drum 140 is provided with a wear-resistant layer A221; the thickness of the wear-resistant layer A221 close to the discharge port 120 is greater than the thickness of the wear-resistant layer A221 close to the feed port 110. Since the outer cylindrical end surface of the spiral blade 220 is easily worn during the material conveying process, and the wear is more serious near the discharge port 120, the wear-resistant layer A221 is provided on the end surface of the spiral blade 220 close to the screen drum 140, and the thickness of the wear-resistant layer A221 close to the discharge port 120 is thicker.

[0035] In one embodiment, if Figure 4 As shown, a wear-resistant layer B222 is provided on the slurry-facing surface of the spiral blade 220 facing the discharge port 120, and the thickness of the wear-resistant layer B222 gradually increases along the direction from the main shaft 210 to the screen drum 140. Since the friction force on the slurry-facing surface of the spiral blade 220 facing the plug device 400 is relatively large, and the friction force gradually increases from the axis of the main shaft 210 to the outside, the thickness of the wear-resistant layer B222 on the slurry-facing surface of the spiral blade 220 also gradually increases along this direction. Figure 3 As shown, in the illustrated embodiment, the wear-resistant layer B222 is divided into a first area 223, a second area 224 and a third area 225, wherein the wear-resistant layer B222 in the first area 223 is the thickest and the wear-resistant layer B222 in the third area 225 is the thinnest.

[0036] In one embodiment, if Figure 4As shown, a notch B226 is provided on the end surface of the spiral blade 220 close to the screen drum 140. Since some solid materials, such as fibers, may remain in the screen holes when passing through the screen holes, the notch B226 is provided on the end surface of the spiral blade 220, which plays a role similar to a scraper during the rotation of the spiral blade 220, taking out the residual materials in the screen holes and playing a role of cleaning the screen drum 140.

[0037] In one embodiment, if Figure 5 As shown, a notch A141 is provided on the inner surface of the screen drum 140, and the size of the notch A141 gradually increases along the rotation direction of the main shaft 210. When the spiral blade 220 rotates, in order to prevent the material from rotating with the spiral blade 220 without being pushed, the notch A141 is provided on the inner surface of the screen drum 140. When the material moves to the notch A141, since the bottom surface of the notch A141 is an inclined surface, the material is stuck in the notch A141 and cannot rotate around the main shaft 210, thereby effectively preventing the material from rotating without being pushed.

[0038] In one embodiment, a water inlet 150 is provided on the top of the main frame 100 . After the slag extruder has been running for a period of time, water is injected into the water inlet 150 to clean the screen drum 140 .

[0039] In one of the embodiments, an overflow trough 160 is provided below the water inlet 150. After the cleaning liquid flows in through the water injection port, it flows out from the overflow trough 160 and is sprinkled on the screen drum 140. Compared with the method of directly introducing water from the water inlet 150, the water flow is smaller, which can reduce the influence of the cleaning liquid on the moisture content of the material in the screen drum 140.

[0040] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A slag extruder, characterized in that: include: A main frame, a spiral device, a transmission device and a plug device, wherein the main frame is provided with a feed port, a discharge port, a water outlet and a screen drum, wherein the feed port and the discharge port are respectively arranged on both sides of the main frame, the water outlet is arranged at the bottom of the main frame, the screen drum is arranged in the main frame, and the spiral device is located inside the screen drum; the spiral device comprises a main shaft and a spiral blade, wherein the spiral blade is fixedly connected to the main shaft; the transmission device is connected to the end of the main shaft to drive the main shaft to rotate; the plug device comprises a driving assembly and a pressing plate, wherein the number of the pressing plates is multiple, and the multiple pressing plates are arranged around the main shaft, a discharge channel is formed between the pressing plate and the main shaft, and the driving assembly is used to drive the pressing plate to move and change the size of the discharge channel; The driving assembly comprises a power unit, a transmission plate and a crank, wherein two ends of the power unit are respectively connected to the main frame and the transmission plate, and the power unit moves to make the transmission plate approach or move away from the main frame; one end of the crank is rotatably connected to the main frame, and the other end is provided with a roller, the roller abuts against the transmission plate, and the pressure plate is fixedly connected to the crank; the power unit is a pneumatic airbag, a cylinder, a hydraulic cylinder or an electric motor; A notch A is provided on the end surface of the spiral blade close to the screen drum; A notch B is provided on the inner surface of the screen drum, and the size of the notch B gradually increases along the rotation direction of the main shaft.

2. The slag extruder according to claim 1, characterized in that: The pressing plate is in the shape of an arc sheet.

3. The slag extruder according to claim 1, characterized in that: The screen drum is detachably connected to the main frame. Anti-rotation flanges are provided at both ends of the screen drum. The anti-rotation flanges are fixed to the main frame via anti-rotation pins.

4. The slag extruder according to claim 1, characterized in that: The end surface of the spiral blade close to the screen drum is provided with a wear-resistant layer A; the thickness of the wear-resistant layer A close to the discharge port is greater than the thickness of the wear-resistant layer A close to the feed port.

5. The slag extruder according to claim 1, characterized in that: A wear-resistant layer B is provided on the pulp-facing surface of the spiral blade facing the discharge port, and the thickness of the wear-resistant layer B gradually increases along the direction from the main axis to the screen drum.

6. The slag extruder according to claim 1, characterized in that: A water inlet is arranged on the top of the main frame.

7. The slag extruder according to claim 6, characterized in that: An overflow trough is arranged below the water inlet.

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