A squeeze solid-liquid separator

Abstract

The present invention provides an extrusion solid-liquid separator, which relates to the field of sludge treatment technology. The extrusion solid-liquid separator includes: an extrusion mechanism, which includes a spiral shaft and a conical tube, wherein the spiral shaft is rotatably arranged in the conical tube, and the conical tube has a tube bottom, and the inner surface of the tube bottom is provided with a plurality of receiving grooves extending along the axial direction of the conical tube, and the tube bottom is provided with a plurality of liquid outlet holes connected to the receiving grooves; an extrusion plate, wherein each receiving groove is provided with a plurality of extrusion plates, and gaps are formed between adjacent extrusion plates in each receiving groove, and when the spiral shaft rotates, the extrusion plates can move radially along the conical tube; and a discharge pipe, wherein the discharge pipe is connected to the lower side of the receiving groove. The present invention achieves triple dehydration through spiral extrusion dehydration, primary extrusion dehydration, and secondary extrusion dehydration, significantly improving the dehydration effect.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, in particular to an extrusion solid-liquid separator. Background Art

[0002] Sludge treatment is an integral part of the wastewater treatment process. As wastewater treatment levels increase, the amount of sludge generated also increases. Sludge contains large amounts of organic matter and nutrients, and if discharged directly without treatment, it will cause serious environmental pollution.

[0003] Solid-liquid separation technology is a key link in sludge treatment. It can effectively reduce sludge volume and reduce subsequent treatment costs. Most traditional solid-liquid separation equipment, such as belt filters, centrifuges, and plate and frame filter presses, have problems such as low dehydration efficiency and high moisture content of treated sludge. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides an extrusion solid-liquid separator.

[0005] The present invention provides an extrusion solid-liquid separator, comprising:

[0006] An extrusion mechanism, the extrusion mechanism comprising a spiral shaft and a tapered tube, the spiral shaft being rotatably disposed within the tapered tube, the tapered tube having a tube bottom, the inner surface of the tube bottom being provided with a plurality of receiving grooves extending axially of the tapered tube, and the tube bottom being provided with a plurality of liquid outlet holes communicating with the receiving grooves;

[0007] Extrusion plates, wherein a plurality of the extrusion plates are disposed in each of the accommodating grooves, and gaps are formed between adjacent extrusion plates in each of the accommodating grooves. When the spiral shaft rotates, the extrusion plates can move radially along the tapered tube;

[0008] A discharge pipe is communicated with a lower side of the accommodating tank.

[0009] Optionally, the diameter of the spiral blades of the spiral shaft gradually decreases from the large-diameter end to the small-diameter end of the tapered tube, and the pitch of the spiral blades of the spiral shaft gradually decreases from the large-diameter end to the small-diameter end of the tapered tube.

[0010] Optionally, an arc-shaped groove is provided around the spiral blade of the spiral shaft, and the side of the extrusion plate facing the inside of the conical tube is set as an arc-shaped portion. When the arc-shaped groove rotates to the arc-shaped portion, at least part of the extrusion plate protrudes from the accommodating groove. When the arc-shaped groove rotates away from the arc-shaped portion, the extrusion plate retracts into the accommodating groove.

[0011] Optionally, the extrusion solid-liquid separator also includes a reset mechanism, which includes a spring, a guide shaft and a baffle. One end of the guide shaft is connected to the bottom surface of the extrusion plate, and the other end of the guide shaft passes through the bottom of the tube and is connected to the baffle. The spring is sleeved on the guide shaft, and the two ends of the spring are respectively connected to the outer surface of the bottom of the tube and the baffle. When the arc groove rotates away from the arc surface portion, the spring is in a stretched state. When the arc groove rotates to the arc surface portion, the spring returns to a natural state from the stretched state.

[0012] Optionally, the reset mechanism further includes a push rod, one end of which is connected to the baffle, and the other end of which faces the outer surface of the bottom of the tube. When the spring recovers from the stretched state to the natural state, the push rod can hit the outer surface of the bottom of the tube.

[0013] Optionally, the reset mechanism further includes a tamping pin and a bracket, the bracket is connected to the push rod and / or the baffle, one end of a plurality of the tamping pins is connected to the bracket, and the other end of the plurality of the tamping pins passes through the corresponding liquid outlet into the accommodating tank.

[0014] Optionally, a plurality of insertion holes are provided on the bottom surface of the extrusion plate, and a plurality of tamping pins are inserted into corresponding insertion holes.

[0015] Optionally, the extrusion solid-liquid separator also includes a shell, the conical tube is installed horizontally in the shell, the shell includes a feed port and a partition, the feed port is connected to the shell and communicates with the large-diameter end of the conical tube, the partition is connected to the shell, the small-diameter end of the conical tube is connected to the partition, and the partition is provided with a discharge port communicated with the small-diameter end of the conical tube.

[0016] Optionally, the extrusion solid-liquid separator further includes a pressure plate, which is connected to the shell through a mounting bracket, and the pressure plate is sleeved on the shaft of the spiral shaft, forming an extrusion space between the pressure plate and the discharge port.

[0017] Optionally, the extrusion solid-liquid separator further includes a first box body, a second box body and a third box body, the first box body is connected to the discharge pipe, the second box body is connected to the plurality of liquid outlet holes, and the third box body is connected to the discharge port.

[0018] The beneficial effect of the extrusion solid-liquid separator of the present invention is that the sludge can be transported from the large-diameter end of the conical tube to the small-diameter end through the rotation of the spiral shaft, and the spiral extrusion dehydration effect of the sludge is achieved. The slurry squeezed out by the spiral enters the receiving tank through the gap. The rotation of the spiral shaft can also make the extrusion plate move along the radial direction of the conical tube. That is to say, when the slurry passes through the gap, the adjacent extrusion plates can intermittently move in the receiving tank to achieve the initial extrusion dehydration process of the slurry. After the initial extrusion dehydration, the slurry enters the receiving tank. Since the bottom of the conical tube is inclined, the slurry flows from the higher side of the receiving tank to the lower side. In this process, it is squeezed by multiple extrusion plates to achieve the secondary extrusion dehydration process of the slurry. The water that meets the discharge standard is discharged from the liquid outlet, and a small amount of small sludge pieces are discharged from the discharge pipe. In summary, triple dehydration is achieved through spiral extrusion dehydration, primary extrusion dehydration and secondary extrusion dehydration, which significantly improves the dehydration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of an extrusion solid-liquid separator according to an embodiment of the present invention;

[0020] Figure 2 A perspective view of an extruded solid-liquid separator according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic structural diagram of the screw shaft and the extrusion plate in the extrusion solid-liquid separator according to an embodiment of the present invention when in sliding contact;

[0022] Figure 4 Schematic diagram of the structure of the extrusion plate in the extrusion solid-liquid separator according to an embodiment of the present invention;

[0023] Figure 5 for Figure 1 A magnified view of the structure at point A;

[0024] Figure 6 It is a structural schematic diagram of the squeezing plate in the squeezing solid-liquid separator according to an embodiment of the present invention when it is retracted into the accommodating tank.

[0025] Explanation of the accompanying reference numerals: 1. Shell; 11. Feed port; 12. Partition; 121. Discharge port; 2. Extrusion mechanism; 21. Screw shaft; 211. Arc groove; 22. Conical tube; 221. Bottom of tube; 2211. Accommodation groove; 2212. Liquid outlet; 3. Extrusion plate; 31. Socket; 4. Reset mechanism; 41. Tamping pin; 42. Bracket; 43. Push rod; 44. Spring; 45. Guide shaft; 46. Baffle; 5. Pressure plate; 6. Discharge pipe; 7. Gap. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] Throughout this specification, reference to terms such as "an embodiment," "one embodiment," "some embodiments," "exemplarily," and "one embodiment" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or embodiment are included in at least one embodiment or embodiment of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or embodiment. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or embodiments.

[0029] The terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly specify the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one of the features.

[0030] In the accompanying drawings, the Z-axis represents the vertical direction, that is, the up-down position, with the positive direction of the Z-axis representing the up position and the negative direction of the Z-axis representing the down position. In the accompanying drawings, the X-axis represents the horizontal direction and is designated as the left-right position, with the positive direction of the X-axis representing the left position and the negative direction of the X-axis representing the right position. In the accompanying drawings, the Y-axis represents the front-back position, with the positive direction of the Y-axis representing the front side and the negative direction of the Y-axis representing the back side. It should also be noted that the aforementioned Z-axis, Y-axis, and X-axis are merely for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0031] An embodiment of the present invention provides an extrusion solid-liquid separator, including: an extrusion mechanism 2, the extrusion mechanism 2 includes a spiral shaft 21 and a conical tube 22, the spiral shaft 21 is rotatably arranged in the conical tube 22, the conical tube 22 has a tube bottom 221, the inner surface of the tube bottom 221 is provided with a plurality of receiving grooves 2211 extending axially along the conical tube 22, and the tube bottom 221 is provided with a plurality of liquid outlet holes 2212 connected to the receiving grooves 2211; an extrusion plate 3, multiple extrusion plates 3 are arranged in each receiving groove 2211, and a gap 7 is formed between adjacent extrusion plates 3 in each receiving groove 2211. When the spiral shaft 21 rotates, the extrusion plate 3 can move radially along the conical tube 22; a discharge pipe 6, the discharge pipe 6 is connected to the lower side of the receiving groove 2211.

[0032] In this optional embodiment, combined with Figure 1 and Figure 2 As shown, the rotation of the spiral shaft 21 can transport the sludge from the large-diameter end of the tapered tube 22 to the small-diameter end, and realize the spiral extrusion dehydration effect of the sludge. The slurry extruded by the spiral enters the receiving groove 2211 through the gap 7. The rotation of the spiral shaft 21 can also make the extrusion plate 3 move along the radial direction of the tapered tube 22, that is, when the slurry passes through the gap 7, the adjacent extrusion plates 3 can intermittently move in the receiving groove 2211, realizing the initial extrusion dehydration process of the slurry. After the initial extrusion dehydration, the slurry The liquid enters the receiving tank 2211. Since the bottom 221 of the conical tube 22 is inclined, the slurry flows from the higher side of the receiving tank 2211 to the lower side. In this process, it is squeezed by multiple squeezing plates 3, realizing a secondary squeezing and dehydration process of the slurry. Water that meets the discharge standards is discharged from the liquid outlet 2212, and a small amount of small sludge pieces are discharged from the discharge pipe 6. In summary, triple dehydration is achieved through spiral squeezing dehydration, primary squeezing dehydration and secondary squeezing dehydration, which significantly improves the dehydration effect.

[0033] Optionally, the diameter of the spiral blade of the spiral shaft 21 gradually decreases from the large-diameter end to the small-diameter end of the tapered tube 22 , and the pitch of the spiral blade of the spiral shaft 21 gradually decreases from the large-diameter end to the small-diameter end of the tapered tube 22 .

[0034] In this optional embodiment, the design of the conical tube 22 enables the space for the sludge to be accommodated in the conical tube 22 to gradually decrease as the sludge moves from the large-diameter end to the small-diameter end of the conical tube 22, thereby increasing the pressure on the sludge and improving the efficiency of solid-liquid separation. At the same time, the reduction in the pitch of the spiral blades means that the number of spiral blades increases per unit length, resulting in an increase in the speed of sludge movement inside the spiral shaft 21. Because the sludge needs to pass through more blades within the same distance, the sludge is compressed more in a smaller space, which helps to promote the solid particles in the sludge to aggregate more tightly and improve the solid-liquid separation effect of the sludge.

[0035] Furthermore, an arc-shaped groove 211 is provided around the spiral blade of the spiral shaft 21, and the side of the extrusion plate 3 facing the inside of the conical tube 22 is set as an arc-shaped portion. When the arc-shaped groove 211 rotates to the arc-shaped portion, at least part of the extrusion plate 3 protrudes from the accommodating groove 2211. When the arc-shaped groove 211 rotates away from the arc-shaped portion, the extrusion plate 3 retracts into the accommodating groove 2211.

[0036] In this optional embodiment, if Figure 4 As shown, the accommodating groove 2211 is in the shape of a long strip, and three accommodating grooves 2211 are provided on the inner surface of the tube bottom 221 along the axial direction (X-axis direction), and each accommodating groove 2211 is provided with multiple extrusion plates 3, as shown in FIG. Figure 3 As shown, three arcuate grooves 211 are provided on the circumference of the lower half of the blade at the end of the spiral blade, and the rest of the circumference of the blade is in sliding contact with the inner circumference of the tapered tube 22. When the blade rotates, the three arcuate grooves 211 can sequentially slide in contact with the arcuate surface of the extrusion plate 3, so that the extrusion plate 3 intermittently extends out of the accommodating groove 2211 or retracts into the accommodating groove 2211. Figure 3 As shown, the three arcuate grooves 211 are in sliding contact with the arcuate surface parts of the three extrusion plates 3. At this time, the three extrusion plates 3 all protrude from the accommodating grooves 2211. In other words, the arcuate surface parts of the three extrusion plates 3 protrude from the inner surface of the tapered tube 22. When the blade rotates and the rest of the blade circumference is in sliding contact with the arcuate surface parts of the extrusion plates 3, the extrusion plates 3 will be squeezed into the accommodating grooves 2211 due to the absence of the arcuate grooves 211.

[0037] Optionally, the extrusion solid-liquid separator also includes a reset mechanism 4, which includes a spring 44, a guide shaft 45 and a baffle 46. One end of the guide shaft 45 is connected to the bottom surface of the extrusion plate 3, and the other end of the guide shaft 45 passes through the bottom of the tube 221 and is connected to the baffle 46. The spring 44 is sleeved on the guide shaft 45, and the two ends of the spring 44 are respectively connected to the outer surface of the bottom of the tube 221 and the baffle 46. When the arc groove 211 rotates away from the arc surface, the spring 44 is in a stretched state. When the arc groove 211 rotates to the arc surface, the spring 44 recovers from the stretched state to the natural state.

[0038] In this optional embodiment, combined with Figure 5 and Figure 6 As shown, when the arc groove 211 rotates away from the arc surface portion, the spring 44 is in a stretched state. At this time, the spring 44 has elastic potential energy. At this time, the extrusion plate 3 is completely accommodated in the accommodating groove 2211. In other words, one side of the arc surface portion of the extrusion plate 3 sinks into the accommodating groove 2211, so that other parts of the spiral blade of the spiral shaft 21 will not interfere during rotation. When the arc groove 211 rotates to the arc surface portion, the spring 44 releases the elastic potential energy and returns to a natural state from the stretched state. At this time, at least part of the extrusion plate 3 protrudes from the accommodating groove 2211.

[0039] Furthermore, the reset mechanism 4 also includes a push rod 43, one end of the push rod 43 is connected to the baffle 46, and the other end of the push rod 43 faces the outer surface of the bottom of the tube 221. When the spring 44 recovers from the stretched state to the natural state, the push rod 43 can hit the outer surface of the bottom of the tube 221.

[0040] In this optional embodiment, combined with Figure 5 and Figure 6 As shown, the top rod 43 intermittently hits the outer surface of the bottom 221 of the tube, so that the slurry adhering to the inner bottom surface of the accommodating groove 2211 gradually flows toward the lower side of the accommodating groove 2211 under the action of vibration, thereby passing through the squeezing action of multiple squeezing plates 3 in sequence. It should be noted that the amount of impurities contained in the slurry after spiral squeezing dehydration and initial squeezing dehydration is very small. Therefore, after the squeezing action of multiple squeezing plates 3, only a small amount of small sludge pieces are discharged from the discharge pipe 6.

[0041] Optionally, the reset mechanism 4 also includes a tamping pin 41 and a bracket 42, the bracket 42 is connected to the top rod 43 and / or the baffle 46, one end of the multiple tamping pins 41 is connected to the bracket 42, and the other end of the multiple tamping pins 41 passes through the corresponding liquid outlet 2212 into the accommodating groove 2211.

[0042] In this optional embodiment, combined with Figure 5 and Figure 6 As shown, the diameter of the tamping needle 41 is smaller than the inner diameter of the liquid outlet 2212. When the baffle 46 moves back and forth, the tamping needle 41 can intermittently perform a pumping movement in the liquid outlet 2212. When the baffle 46 moves toward the bottom surface of the tube bottom 221, the tamping needle 41 moves upward in the liquid outlet 2212, thereby being able to bring part of the sludge slurry blocked in the liquid outlet 2212 back to the containing tank 2211 for squeezing and dehydration, thereby improving the dehydration effect. 6 moves in the direction away from the bottom surface of the tube bottom 221, when the baffle 46 moves in the direction away from the bottom surface of the tube bottom 221, the tamping needle 41 moves downward in the liquid outlet 2212, so that part of the sludge slurry blocked in the liquid outlet 2212 can be brought out. No matter whether the sludge slurry is brought back into the containing tank 2211 or taken out, the purpose of tamping the liquid outlet 2212 can be achieved, thereby avoiding the problem of poor liquid discharge caused by blockage of the liquid outlet 2212.

[0043] Furthermore, a plurality of insertion holes 31 are provided on the bottom surface of the extrusion plate 3 , and a plurality of tamping pins 41 are inserted into the corresponding insertion holes 31 .

[0044] In this optional embodiment, combined with Figure 5 and Figure 6As shown, by inserting the top end of the tamping pin 41 into the corresponding socket 31, the tamping pin 41 can limit the extrusion plate 3 during its reciprocating movement, so that the extrusion plate 3 will not have a slight tilt. In other words, the distance between each position of the bottom surface of the extrusion plate 3 and the bottom surface of the accommodating groove 2211 can always be kept equal, thereby improving the uniformity of the extrusion plate 3 when extruding the sludge slurry. When the tamping pin 41 needs to be replaced, the tamping pin 41 can be directly pulled out from the corresponding socket 31.

[0045] Optionally, the extrusion solid-liquid separator also includes a shell 1, and the conical tube 22 is horizontally installed in the shell 1. The shell 1 includes a feed port 11 and a partition 12. The feed port 11 is connected to the shell 1 and is connected to the large-diameter end of the conical tube 22. The partition 12 is connected to the shell 1, and the small-diameter end of the conical tube 22 is connected to the partition 12. The partition 12 is provided with a discharge port 121 that is connected to the small-diameter end of the conical tube 22.

[0046] In this optional embodiment, the sludge to be dehydrated is injected into the large-diameter end of the conical tube 22 from the feed port 11, and then the sludge is transported toward the small-diameter end of the conical tube 22 through the spiral shaft 21, thereby realizing the primary and secondary dehydration processes of the sludge.

[0047] Furthermore, the extrusion solid-liquid separator also includes a pressure plate 5, which is connected to the shell 1 through a mounting frame. The pressure plate 5 is sleeved on the shaft of the screw shaft 21, and an extrusion space is formed between the pressure plate 5 and the discharge port 121.

[0048] In this optional embodiment, if Figure 1 As shown, the diameter of the pressure plate 5 is larger than the diameter of the discharge port 121. In this way, the sludge is subjected to greater pressure when passing through the extrusion space, thereby improving the efficiency of solid-liquid separation. In other optional embodiments, the position and pressure of the pressure plate 5 can also be adjusted to control the final water content of the sludge. By adjusting the distance between the pressure plate 5 and the discharge port 121, the extrusion force can be changed to meet different sludge treatment requirements.

[0049] Optionally, the extrusion solid-liquid separator further includes a first box body, a second box body and a third box body, the first box body is connected to the discharge pipe 6, the second box body is connected to the multiple liquid outlet holes 2212, and the third box body is connected to the discharge port 121.

[0050] In this optional embodiment, if Figure 1 and Figure 2As shown, along the negative direction of the X-axis are the first box body, the second box body and the third box body respectively. The first box body is connected to the discharge pipe 6, so that it can collect small sludge pieces after secondary extrusion and dehydration. The second box body is connected to multiple liquid outlet holes 2212, that is, the second box body can be located directly below the multiple liquid outlet holes 2212 to collect water after secondary extrusion, and the third box body can be located directly below the discharge port 121 to collect the sludge blocks squeezed by the pressure plate 5.

[0051] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. An extrusion solid-liquid separator, characterized in that: include: An extrusion mechanism (2), the extrusion mechanism (2) comprising a spiral shaft (21) and a tapered tube (22), the spiral shaft (21) being rotatably disposed in the tapered tube (22), the tapered tube (22) having a tube bottom (221), the inner surface of the tube bottom (221) being provided with a plurality of receiving grooves (2211) extending along the axial direction of the tapered tube (22), and the tube bottom (221) being provided with a plurality of liquid outlet holes (2212) communicating with the receiving grooves (2211); Extrusion plates (3), a plurality of the extrusion plates (3) are provided in each of the accommodating grooves (2211), gaps (7) are formed between adjacent extrusion plates (3) in each of the accommodating grooves (2211), and when the spiral shaft (21) rotates, the extrusion plates (3) can move along the radial direction of the tapered tube (22); A discharge pipe (6), the discharge pipe (6) being in communication with a lower side of the accommodating tank (2211).

2. The extrusion solid-liquid separator according to claim 1, characterized in that: The diameter of the spiral blade of the spiral shaft (21) gradually decreases from the large-diameter end to the small-diameter end of the tapered tube (22), and the pitch of the spiral blade of the spiral shaft (21) gradually decreases from the large-diameter end to the small-diameter end of the tapered tube (22).

3. The extrusion solid-liquid separator according to claim 2, characterized in that: An arcuate groove (211) is provided on the circumference of the spiral blade of the spiral shaft (21), and a side surface of the extrusion plate (3) facing the inside of the conical tube (22) is provided as an arcuate surface portion. When the arcuate groove (211) rotates onto the arcuate surface portion, at least a portion of the extrusion plate (3) protrudes out of the accommodating groove (2211); when the arcuate groove (211) rotates away from the arcuate surface portion, the extrusion plate (3) retracts into the accommodating groove (2211).

4. The extrusion solid-liquid separator according to claim 3, characterized in that: The extrusion solid-liquid separator also includes a reset mechanism (4), which includes a spring (44), a guide shaft (45) and a baffle (46). One end of the guide shaft (45) is connected to the bottom surface of the extrusion plate (3), and the other end of the guide shaft (45) passes through the bottom of the tube (221) and is connected to the baffle (46). The spring (44) is sleeved on the guide shaft (45), and the two ends of the spring (44) are respectively connected to the outer surface of the bottom of the tube (221) and the baffle (46). When the arc groove (211) rotates away from the arc surface, the spring (44) is in a stretched state. When the arc groove (211) rotates to the arc surface, the spring (44) returns to a natural state from the stretched state.

5. The extrusion solid-liquid separator according to claim 4, characterized in that: The reset mechanism (4) further includes a push rod (43), one end of which is connected to the baffle (46), and the other end of which faces the outer surface of the tube bottom (221). When the spring (44) returns to a natural state from the stretched state, the push rod (43) can hit the outer surface of the tube bottom (221).

6. The extrusion solid-liquid separator according to claim 5, characterized in that: The reset mechanism (4) further comprises a tamping pin (41) and a bracket (42), wherein the bracket (42) is connected to the push rod (43) and / or the baffle (46), one end of a plurality of the tamping pins (41) is connected to the bracket (42), and the other ends of the plurality of the tamping pins (41) pass through the corresponding liquid outlet holes (2212) into the accommodating groove (2211).

7. The extrusion solid-liquid separator according to claim 6, characterized in that: The bottom surface of the extrusion plate (3) is provided with a plurality of insertion holes (31), and the plurality of tamping pins (41) are inserted into the corresponding insertion holes (31).

8. The extrusion solid-liquid separator according to any one of claims 1 to 7, characterized in that: The extrusion solid-liquid separator also includes a shell (1), the conical tube (22) is horizontally installed in the shell (1), the shell (1) includes a feed port (11) and a partition (12), the feed port (11) is connected to the shell (1) and communicated with the large-diameter end of the conical tube (22), the partition (12) is connected to the shell (1), the small-diameter end of the conical tube (22) is connected to the partition (12), and the partition (12) is provided with a discharge port (121) that is communicated with the small-diameter end of the conical tube (22).

9. The extrusion solid-liquid separator according to claim 8, characterized in that: The extrusion solid-liquid separator further comprises a pressure plate (5), wherein the pressure plate (5) is connected to the housing (1) via a mounting frame, and the pressure plate (5) is sleeved on the shaft of the screw shaft (21), and an extrusion space is formed between the pressure plate (5) and the discharge port (121).

10. The extrusion solid-liquid separator according to claim 8, characterized in that: The extrusion solid-liquid separator further comprises a first box, a second box and a third box, wherein the first box is connected to the discharge pipe (6), the second box is connected to the plurality of liquid outlet holes (2212), and the third box is connected to the discharge port (121).

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