Plug extruder with secondary discharge

Abstract

The present application relates to the field of dewatering equipment, especially to a secondary deslagging plug type extruder, comprising: a dewatering shell, a dewatering cavity having a discharging end and a piston mounting end, the top of the dewatering shell being provided with a feeding port, the cavity wall of the dewatering cavity being provided with a drainage screen hole near the discharging end, the dewatering shell being provided with a material door at the discharging end; an extruding piston, comprising an extruding block and a driving member for driving the extruding block to move back and forth; a separation shell, arranged at the bottom of the dewatering shell, the top of the separation shell being open, and the end of the separation shell away from the discharging end being communicated with a drainage port, the separation shell being provided with a deslagging conveying member, the deslagging conveying member comprising a deslagging part, the deslagging part being provided with a conveying part capable of moving material to the discharging end direction, the present application can re-separate water and slag of the extruding water in the drainage screen hole through the arrangement of the separation shell and the deslagging conveying member, and the slag after water and slag separation is automatically discharged, effectively solving the problems existing in the prior art.

Description

Technical Field

[0001] This invention relates to the field of dewatering equipment, and more particularly to a plug-type extruder with secondary slag discharge. Background Technology

[0002] For some kitchen waste with high water content, dehydration is required before processing. A plug-type extruder is a commonly used extrusion device. Existing plug-type extruders often have structures like the one disclosed in application number 201020300244.9, which uses an extrusion plate moving inside an extrusion cylinder to force water out through an outlet. The dehydrated material is then discharged through a conical nozzle. The extruded liquid from this type of equipment flows directly into a sewage tank. In some embodiments, to reduce the amount of waste material in the water, the outlet is designed with small apertures (commonly with a radial dimension less than or equal to 3mm). However, because household waste contains a large amount of plastic bags and organic matter, these small apertures are prone to clogging. Therefore, most extruders often have large apertures (commonly with a radial dimension greater than or equal to 1cm), resulting in more waste impurities in the extruded water, increasing the difficulty of discharging and reprocessing the extruded water.

[0003] Therefore, there is an urgent need to improve the plug extruder. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a plug-type extruder with secondary slag discharge. By setting a separation shell and a slag discharge conveyor, the extruded water drained from the drainage screen holes can be separated into water and slag again, and the slag after water and slag separation can be automatically discharged, effectively solving the problems existing in the prior art.

[0005] To address the aforementioned problems, this invention provides a plug-type extruder with secondary slag discharge, comprising: a dewatering shell having a laterally extending dewatering chamber, the dewatering chamber having a discharge end and a piston mounting end, the top of the dewatering shell having a feed inlet communicating with the dewatering chamber, the feed inlet being located between the discharge end and the piston mounting end, the chamber wall of the dewatering chamber having a drainage screen hole in a section near the discharge end, and the dewatering shell having an openable and closable material gate at the discharge end; and an extrusion piston including an extrusion block slidably disposed in the dewatering chamber, which drives the extrusion block in the dewatering chamber... A driving component that reciprocates within the water chamber; a separation shell disposed at the bottom of the dewatering shell, the top of the separation shell being open, the bottom wall of the separation shell being inclined downwards in the direction away from the discharge end, and a drain outlet being connected to the end of the separation shell away from the discharge end; a slag discharge conveying component is provided inside the separation shell, the slag discharge conveying component including a slag receiving part disposed below the drain screen holes, the slag receiving part being provided with a conveying part capable of moving material towards the discharge end, the slag receiving part being disposed in such a way that water in the slag receiving part can flow to the bottom wall of the separation shell.

[0006] Furthermore, the slag discharge conveying component includes a conveying spiral disposed at the bottom of the separation shell, the bottom wall of the separation shell forming a recessed spiral conveying cavity, the conveying spiral being fitted into the spiral conveying cavity, the conveying spiral forming the conveying part, and the spiral conveying cavity forming the slag receiving part.

[0007] Furthermore, the sidewalls of the separation shell on both sides of the spiral conveying cavity extend obliquely inward from top to bottom.

[0008] Furthermore, the separation shell is provided with a water collecting bottom shell at a position away from the discharge end of the spiral conveying cavity, and a water collecting cavity is formed between the water collecting bottom shell and the separation shell. The bottom wall of the spiral conveying cavity is provided with a water filtering screen in the part corresponding to the water collecting cavity, and the water collecting cavity is provided with the drain outlet.

[0009] Furthermore, the water collection chamber is provided with a first spray pipe, and the spray direction of the first spray pipe is set towards the filter screen holes.

[0010] Furthermore, the slag discharge conveying component includes a conveyor belt assembly disposed within the separation shell. The conveyor belt assembly includes a filter cloth and a roller that drives the filter cloth to rotate. The filter cloth forms the slag receiving part and the conveying part, and one end of the filter cloth extends to the discharge end.

[0011] Furthermore, a second spray pipe is provided on the outer side of the dewatering chamber wall outside the drainage screen hole, and the spray direction of the second spray pipe is set towards the drainage screen hole.

[0012] Furthermore, the second spray pipe is slidably disposed along the sliding direction of the extrusion block.

[0013] Furthermore, the extrusion block is connected to a pusher block, and the second spray pipe is provided with a top block that cooperates with the pusher block, so that when the extrusion block moves toward the discharge end, it can push the second spray pipe to move toward the discharge end; the second spray pipe is slidably disposed obliquely downward in a direction away from the discharge end, and / or, a first spring is provided between the second spray pipe and the dehydration shell, which can drive the second spray pipe to move toward the piston mounting end, and / or, the water spraying direction of the second spray pipe is toward the discharge end.

[0014] Furthermore, a second spring is provided between the top block and the push block.

[0015] The beneficial effect of this invention is that it has a simple structure. By setting a separation shell and a slag discharge conveyor, it can further separate the squeezed water in the drainage screen holes and automatically discharge the slag after water-slag separation, which effectively solves the problems existing in the prior art. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention.

[0018] Figure 2 for Figure 1 A schematic diagram of the lateral cross-sectional structure at the center line of the extrusion block in the embodiment shown.

[0019] Figure 3 for Figure 2 A schematic diagram of a partial cross-sectional view of the structure at the location of the extrusion block along the AA direction.

[0020] Figure 4 for Figure 1 A partial structural diagram of the side riser installation location after removing part of the cover plate in the illustrated embodiment.

[0021] Figure 5 for Figure 1 The illustrated embodiment corresponds to Figure 4 A partial side view of the structure.

[0022] Figure 6 Corresponding to the present invention Figure 2 A schematic diagram of the structure of another embodiment.

[0023] The components are as follows: 1. Dehydration shell; 2. Dehydration chamber; 3. Feed inlet; 4. Drainage screen; 5. Material gate; 6. Extrusion block; 7. Drive unit; 8. Separation shell; 9. Drain outlet; 10. Conveying screw; 11. Screw conveying chamber; 12. Water collection bottom shell; 13. Filter screen; 14. First spray pipe; 15. Filter cloth; 16. Roller; 17. Scraper; 18. Second spray pipe; 1801. Bottom horizontal pipe; 1802. Side vertical pipe; 1803. Water supply pipe; 19. Push block; 1901. Insert rod structure; 20. Top block; 2001. Sleeve structure; 21. Second spring; 22. Lifting cylinder; 23. Drain pipe; 24. Sliding block; 25. Horizontal rib plate. Detailed Implementation

[0024] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0025] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0026] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two connected entities do not establish a connection relationship through an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0028] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] In this invention, such as Figures 1 to 6As shown, a plug-type extruder with secondary slag discharge is provided, comprising: a dewatering shell 1 having a laterally extending dewatering chamber 2, the dewatering chamber 2 having a discharge end and a piston mounting end, the top of the dewatering shell 1 having a feed inlet 3 communicating with the dewatering chamber 2, the feed inlet 3 being located between the discharge end and the piston mounting end, the chamber wall of the dewatering chamber 2 having a drainage screen hole 4 near the discharge end, and the dewatering shell 1 having an openable and closable material gate 5 at the discharge end; and an extrusion piston including an extrusion block 6 slidably disposed in the dewatering chamber 2, driving the extrusion block 6 in the dewatering chamber 2. The internal reciprocating drive 7; the separation shell 8, which is located at the bottom of the dewatering shell 1, has an open top and a bottom wall that slopes downwards away from the discharge end. The end of the separation shell 8 away from the discharge end is connected to a drain outlet 9. The separation shell 8 is equipped with a slag discharge conveying component, which includes a slag receiving part located below the drain screen hole 4. The slag receiving part is provided with a conveying part that can move the material towards the discharge end. The slag receiving part is configured such that the water in the slag receiving part can flow to the bottom wall of the separation shell 8.

[0030] When the extruder of the present invention is in use, the extrusion block 6 is located on one side of the piston mounting end. The material enters the dewatering chamber 2 through the feed port 3. The driving component 7 drives the extrusion block 6 to move toward the material gate 5 and compresses the material at the position of the drainage screen hole 4. The water squeezed out by the material is discharged into the separation shell 8 through the drainage screen hole 4. After a certain amount of material accumulates at the discharge end, the material gate 5 is opened, and the material is pushed out from the position of the material gate 5 by the movement of the extrusion block 6. After the material gate 5 is closed, the material re-enters for compression.

[0031] After the squeezed water enters the separation shell 8 and falls into the slag receiving section, the water flows to the bottom wall of the separation shell 8 and flows towards the drain outlet 9, completing the water-slag separation at the slag receiving section. Furthermore, the slag can be moved to the discharge end by the conveying section so that the slag can be discharged from the discharge end.

[0032] This invention, by incorporating a separation shell 8 and a slag conveying component below the drainage screen holes 4, enables further water-slag separation of the squeezed water, reducing the impurity content in the discharged water at the drain outlet 9 and improving the overall quality of the discharged water. This effectively solves the problems existing in the prior art by preventing clogging of the drainage screen holes 4 through increased size, without compromising the quality of the discharged water.

[0033] It should be noted that, in Figure 1 and Figure 6In the embodiment shown, the material gate 5 is configured to open and close vertically. The material gate 5 is opened and closed by a lifting cylinder 22 at the top of the dehydration shell 1. The opening and closing method of the material gate 5 is not the focus of the improvement of the present invention. Those skilled in the art can flexibly choose the existing opening and closing method of the material gate 5, such as the horizontal movement opening and closing method or the rotation opening and closing method.

[0034] Regarding the settings for driver 7, in Figure 1 and Figure 6 In the embodiment shown, the driving component 7 is configured as a driving cylinder.

[0035] Regarding the structure of the slag discharge conveyor, in a preferred embodiment, more specifically, as follows: Figures 1 to 3 As shown, the slag discharge conveying component includes a conveying spiral 10 disposed at the bottom of the separation shell 8. The bottom wall of the separation shell 8 forms a recessed spiral conveying cavity 11. The conveying spiral 10 is fitted into the spiral conveying cavity 11, forming the conveying part, and the spiral conveying cavity 11 forms the slag receiving part.

[0036] like Figure 2 As shown, this allows the water flowing out of the drainage screen hole 4 to enter the screw conveyor chamber 11. Since the bottom wall of the screw conveyor chamber 11 also serves as the bottom wall of the separation shell 8, the bottom wall of the screw conveyor chamber 11 is inclined downward towards the drain outlet 9. The water flows along the bottom wall of the screw conveyor chamber 11 towards the drain outlet 9 and is discharged. During the flow of water, some slag is blocked by the conveying screw 10 and remains on the bottom wall of the screw conveyor chamber 11. When the screw conveyor chamber 11 rotates, it can move the slag towards the discharge end so that the slag can be discharged from the discharge end.

[0037] exist Figure 1 In the illustrated embodiment, a further optimization is provided, such as Figure 3 As shown, the separating shell 8 extends obliquely inward from top to bottom along the side walls of the spiral conveying cavity 11. This allows the extruded liquid inside the separating shell 8 to converge into the spiral conveying cavity 11 for rapid discharge of the extruded water.

[0038] In a preferred embodiment, for the case of using a spiral conveying cavity 11, a further optimization is that the separation shell 8 is provided with a water collecting bottom shell 12 at a position away from the discharge end of the spiral conveying cavity 11, and a water collecting cavity is formed between the water collecting bottom shell 12 and the separation shell 8. The bottom wall of the spiral conveying cavity 11 is provided with a water filtering screen 13 in the part corresponding to the water collecting cavity, and the water collecting cavity is provided with the drain outlet 9.

[0039] like Figure 2As shown, by setting the water filter screen 13, the drain outlet 9 is connected to the screw conveyor chamber 11 through the water collection chamber and the water filter screen 13. This can reduce the amount of slag discharged from the screw conveyor chamber 11 through the drain outlet 9. At this time, the radial dimension of the water filter screen can be set to be smaller than that of the drain screen 4. This is to facilitate the interception of slag with a particle size smaller than that of the drain screen 4 but larger than that of the water filter screen. So that when the radial dimension of the water filter screen 13 is increased to prevent the water filter screen 13 from being blocked, the amount of slag discharged from the drain outlet 9 will not change or increase as a result.

[0040] exist Figure 1 In the illustrated embodiment, the setting of the drain outlet 9, more specifically, is as follows: Figure 2 As shown, the extruder is equipped with a drain pipe 23 connected to the water collection chamber from the bottom of the water collection bottom shell 12, and the upper opening of the drain pipe 23 forms a drain outlet 9.

[0041] In the illustrated embodiment, a further optimization of this invention is that a first spray pipe 14 is provided inside the water collection chamber, and the spray direction of the first spray pipe 14 is set towards the water filter screen 13. Figure 2 As shown, by setting a first spray pipe 14, the filter screen holes 13 can be cleaned by the spray impact of the first spray pipe 14 to prevent the filter screen holes from becoming clogged.

[0042] Regarding the configuration of the slag discharge conveyor, in a preferred embodiment, unlike the configuration of the conveying screw 10 and screw conveying cavity 11 in the aforementioned embodiments, it can be configured as follows: the slag discharge conveyor includes a conveyor belt assembly disposed within the separation shell 8; the conveyor belt assembly includes a filter cloth 15 and a roller 16 that drives the filter cloth 15 to rotate; the filter cloth 15 forms the slag receiving portion and the conveying portion; one end of the filter cloth 15 extends to the discharge end. Figure 6 As shown, the squeezed water flowing out of the drainage screen can be filtered directly through the filter cloth 15. The filtered water flows to the bottom wall of the separation shell 8 and moves towards the drain port 9. The slag falls on the filter cloth 15 and moves towards the discharge end by rolling, so that the slag on the upper side of the filter cloth 15 is discharged from the discharge end.

[0043] For the roller 16, those skilled in the art can flexibly select the existing belt conveyor roller 16 and the drive structure of the drive roller 16 during implementation, which will not be described in detail here.

[0044] In embodiments employing filter cloth 15 and drum 16, to further improve the sludge-water separation effect, such as... Figure 6 As shown, a scraper 17 can also be set at one end of the slag discharge. The scraper 17 contacts the filter cloth 15 at the drum 16 so as to clean the slag before turning the filter cloth 15 down.

[0045] In a preferred embodiment, a further optimization of the present invention is that a second spray pipe 18 is provided on the outer side of the wall of the dehydration chamber 2 outside the drainage screen hole 4, and the spraying direction of the second spray pipe 18 is set towards the drainage screen hole 4.

[0046] By setting a second spray pipe 18, water can be sprayed through the drainage screen hole 4 to clean it when it becomes clogged, thus further preventing the drainage screen hole 4 from becoming clogged and improving the efficiency of extrusion dewatering.

[0047] In a preferred embodiment, a further optimization is that the second spray pipe 18 is slidably disposed along the sliding direction of the extrusion block 6.

[0048] With this setup, when cleaning the drainage screen holes 4, the second spray pipe 18 can be moved to increase the cleaning coverage area of ​​the drainage screen holes 4, thereby further improving the cleaning effect.

[0049] exist Figure 1 In the illustrated embodiment, the arrangement of the second spray pipe 18 is further specified as follows: Figures 3 to 5 As shown, the second spray pipe 18 includes a bottom horizontal pipe 1801 disposed on the lower side of the dehydration shell 1, a side vertical pipe 1802 disposed on the side of the dehydration shell 1, and a water supply pipe 1803 connected to the bottom horizontal pipe 1801. When the second spray pipe 18 moves back and forth, the bottom horizontal pipe 1801 and the side vertical pipe 1802 can cover the drainage screen holes 4 at the bottom and side of the dehydration shell 1.

[0050] In an alternative embodiment, when the dehydration shell 1 is provided with drainage screen holes 4 only at the bottom or side, the second spray pipe 18 may be provided with only a side vertical pipe 1802 or a bottom horizontal pipe 1801.

[0051] Regarding the sliding method of the second spray pipe 18, in a preferred embodiment, such as... Figures 3 to 5 As shown, more specifically, the extrusion block 6 is connected to a push block 19, and the second spray pipe 18 is provided with a top block 20 that cooperates with the push block 19, so that when the extrusion block 6 moves toward the discharge end, it can push the second spray pipe 18 toward the discharge end. The second spray pipe 18 is slidably arranged obliquely downward in the direction away from the discharge end.

[0052] With this configuration, the second spray pipe 18 can be pushed towards the discharge end when the extrusion block 6 moves to extrude the material, so that the spray direction of the second spray pipe 18 is aligned with the drainage screen hole 4 at the discharge end. After the material is discharged from the material gate 5, when the extrusion block 6 moves back to the piston mounting end, the extrusion block 6 no longer supports the second spray pipe 18. Since the second spray pipe 18 is set in an inclined sliding manner, it can gradually move towards the piston mounting end under its own weight. During this process, the second spray pipe 18 can continuously spray water to clean the drainage screen hole 4 at the dewatering chamber 2 and the cavity position.

[0053] The power source for the second spray pipe 18 to move and reset from the discharge end toward the piston mounting end is not limited to... Figure 1 The second spray pipe 18 is shown to be tilted and rely on its own weight. In optional embodiments, it can also be done in the following manner or a combination of the following manner:

[0054] Firstly, a first spring is provided between the second spray pipe 18 and the dehydration shell 1, which can drive the second spray pipe 18 to move towards the piston mounting end. In a specific embodiment, after the first spring is provided between the second spray pipe 18 and the dehydration shell 1, the first spring is compressed when the extrusion block 6 pushes the second spray pipe 18 to move towards the discharge end. When the extrusion block 6 moves back to the piston mounting end, the extrusion block 6 no longer supports the second spray pipe 18 and pushes the second spray pipe 18 to move under the action of the first spring's reset force.

[0055] Secondly, such as Figure 4 and Figure 5 As shown, the water spraying direction of the second spray pipe 18 is towards the discharge end. As also shown, the nozzles of the second spray pipe 18 are all inclined towards the discharge end. This allows the extrusion block 6 to no longer support the second spray pipe 18 when it moves back to the piston mounting end, and spraying occurs through the second spray pipe 18. The backwashing effect of the sprayed water promotes the movement of the second spray pipe 18.

[0056] Other methods, such as using electric push rods, pneumatic push rods, or hydraulic push rods, can be used to move the second spray pipe 18.

[0057] The arrangement of the top block 20 and the push block 19 between the extrusion block 6 and the second spray pipe 18 will be described as one embodiment. Figure 1 In the illustrated embodiments, more specifically, such as Figures 3 to 5As shown, the end of the extrusion block 6 facing away from the discharge end is connected to the telescopic end of the drive cylinder. The telescopic end of the drive cylinder is connected to the push block 19, so that the extrusion block 6 is connected to the push block 19 through the telescopic end of the drive cylinder. The push block 19 extends from the side wall of the dehydration shell 1. The side wall of the dehydration shell 1 is provided with a sliding groove for the push block 19 to extend. The second spray pipe 18 is connected to the slider 24 through the side riser 1802 at the side wall position of the dehydration shell 1. The dehydration shell 1 is provided with a horizontal rib plate 25 to support the slider 24. The horizontal rib plate 25 is provided with a through groove for the side riser 1802 to move. The slider 24 is connected to the top block 20 through a connecting rod, so as to realize the sliding engagement of the second spray pipe 18 on the horizontal rib plate 25.

[0058] exist Figure 4 and Figure 5 In the view, to better demonstrate the structure and installation method of the second spray pipe 18, the cover plate on the outer side wall of the dewatering chamber with drainage screen holes is removed and shown. In a specific embodiment, such as... Figure 1 and Figure 3 As shown, a cover plate is installed on the outer side wall of the dewatering chamber, which has drainage screen holes, to prevent squeezed water from splashing outwards during dewatering. Based on this description, Figure 1 , Figure 3 and Figure 4-5 The view shown corresponds to the view.

[0059] In a further optimization of the embodiments of the present invention, a second spring 21 is provided between the top block 20 and the push block 19. By providing the second spring 21, when the extrusion block 6 discharges the material from the material gate 5 and moves towards the piston mounting end, the push block 19 supports the second spray pipe 18 via the second spring 21. This ensures that the reset sliding of the second spray pipe 18 lags behind the extrusion block 6, allowing the spray direction of the second spray pipe 18 to spray and clean the cavity, further improving the cleaning effect.

[0060] This is not intended to limit the invention. In optional embodiments, other methods can be used, such as directly setting a second spring 21 on the push block 19 or the top block 20. When the extrusion block 6 is located on the piston mounting end side, the push block 19 and the top block 20 are separated and no longer in direct or indirect contact through the second spring 21. At this time, the second spray pipe 18 can move freely towards the piston mounting end. As the extrusion block 6 gradually moves towards the discharge end, the push block 19 and the top block 20 gradually transmit the supporting force through the spring to drive the second spray pipe 18 to move.

[0061] exist Figure 1 In the illustrated embodiment, the arrangement structure of the second spring 21 is further specified as follows: Figure 5As shown, the push block 19 has a rod structure 1901, and the top block 20 has a sleeve structure 2001. The rod structure 1901 can be inserted into the sleeve structure 2001, and a second spring 21 is provided inside the sleeve structure 2001. This allows the second spring 21 to be installed neatly.

[0062] exist Figure 5 In order to show the structure and cooperation of the push block 19, the top block 20, and the second spring 21, some of the built-in components are shown with dashed lines.

[0063] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0064] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A plug-type extruder with secondary slag discharge, characterized in that, include: A dehydration shell has a laterally extending dehydration chamber, which has a discharge end and a piston mounting end. The top of the dehydration shell is provided with a feed inlet communicating with the dehydration chamber. The feed inlet is located between the discharge end and the piston mounting end. The cavity wall of the dehydration chamber is provided with a drainage screen hole in a section near the discharge end. The dehydration shell is provided with an openable and closable material gate at the discharge end. The extrusion piston includes an extrusion block slidably disposed in the dehydration chamber and a drive component that drives the extrusion block to reciprocate within the dehydration chamber; A separation shell is disposed at the bottom of the dewatering shell, the top of the separation shell is open, the bottom wall of the separation shell slopes downwards in the direction away from the discharge end, and the end of the separation shell away from the discharge end is connected to a drain outlet. A slag discharge conveying device is provided inside the separation shell, the slag discharge conveying device includes a slag receiving part disposed below the drain screen holes, the slag receiving part is provided with a conveying part that can move material towards the discharge end, the slag receiving part is disposed in such a way that water in the slag receiving part can flow to the bottom wall of the separation shell; A second spray pipe is provided on the outer side of the dewatering chamber wall outside the drainage screen hole, and the spray direction of the second spray pipe is set towards the drainage screen hole; The second spray pipe is slidably disposed along the sliding direction of the extrusion block; The extrusion block is connected to a pusher block, and the second spray pipe is provided with a top block that cooperates with the pusher block, so that when the extrusion block moves toward the discharge end, it can push the second spray pipe toward the discharge end. The second spray pipe is slidably disposed obliquely downward in a direction away from the discharge end, and / or, a first spring is provided between the second spray pipe and the dewatering shell, which can drive the second spray pipe to move toward the piston mounting end.

2. The plug extruder with secondary slag discharge according to claim 1, characterized in that, The slag discharge conveying component includes a conveying spiral disposed at the bottom of the separation shell. The bottom wall of the separation shell forms a recessed spiral conveying cavity. The conveying spiral is fitted into the spiral conveying cavity, forming the conveying part, and the spiral conveying cavity forms the slag receiving part.

3. The plug extruder with secondary slag discharge according to claim 2, characterized in that, The separation shell extends obliquely inward from top to bottom along the side walls of the spiral conveying cavity.

4. The plug extruder with secondary slag discharge according to claim 2, characterized in that, The separation shell is provided with a water collecting bottom shell at a position away from the discharge end of the spiral conveying cavity. A water collecting cavity is formed between the water collecting bottom shell and the separation shell. The bottom wall of the spiral conveying cavity is provided with a water filtering screen in the part corresponding to the water collecting cavity. The water collecting cavity is provided with the drain outlet.

5. The plug extruder with secondary slag discharge according to claim 4, characterized in that, The water collection chamber is equipped with a first spray pipe, and the spray direction of the first spray pipe is set towards the filter screen holes.

6. The plug extruder with secondary slag discharge according to claim 1, characterized in that, The slag discharge conveyor includes a conveyor belt assembly disposed within the separation shell. The conveyor belt assembly includes a filter cloth and a roller that drives the filter cloth to rotate. The filter cloth forms the slag receiving part and the conveying part, and one end of the filter cloth extends to the discharge end.

7. The plug extruder with secondary slag discharge according to claim 1, characterized in that, A second spring is provided between the top block and the push block.

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