unagitated concentrator

Abstract

The utility model discloses a kind of non-agitation concentration machines, including slurry tank, filter stick, discharge pipe and push material structure, clamping plate is installed in slurry tank, the bottom of slurry tank has discharge port;Filter stick is located in slurry tank, the upper end of filter stick is installed on clamping plate, filter stick upper end has clear liquid outlet, filter stick has the filter inlet below clamping plate;Discharge pipe is horizontally placed, discharge pipe has discharge inlet and discharge outlet, discharge inlet is communicated with discharge outlet;Push material structure includes push rod and the first driving device for driving push rod to move, push rod is movably located in discharge pipe and is connected with the first driving device, push rod can push material in discharge pipe to move to discharge outlet direction;The utility model is provided with push rod in discharge pipe, push rod can push material in discharge pipe to move to discharge outlet direction, and then when the discharge port of slurry tank is blocked, push rod can push material out, avoid affecting concentration machine discharge.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of concentrator, especially to a non-stirring concentrator. BACKGROUND

[0002] The existing non-stirring concentrator adopts the mode of filter stick extraction filtration in the kettle. However, as the solid content of slurry gradually increases, its fluidity will gradually deteriorate, which is easy to cause the blockage of the discharge pipe of the concentrator, and further cause the hardening phenomenon, affecting the discharge of the concentrator. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art. To this end, the utility model provides a non-stirring concentrator.

[0004] The technical scheme of the utility model is as follows: a slurry tank, a filter stick, a discharge pipe and a pushing structure are provided, a clamping plate is installed in the slurry tank, the bottom of the slurry tank has a discharge port, the slurry tank has a feeding pipe between the clamping plate and the discharge port; the filter stick is located in the slurry tank, the upper end of the filter stick is installed on the clamping plate, the upper end of the filter stick has a clear liquid outlet, and the filter stick has a filtering inlet below the clamping plate; the discharge pipe is horizontally placed, the discharge pipe has a discharge inlet and a discharge outlet, and the discharge inlet is communicated with the discharge port; the pushing structure includes a push rod and a first driving device for driving the push rod to move, the push rod is movably located in the discharge pipe and connected with the first driving device, and the push rod can push the material in the discharge pipe to move to the discharge outlet. Further, the discharge outlet is located at the left end of the discharge pipe, the first driving device is installed on the right end of the discharge pipe, the discharge inlet is located between the left end of the discharge pipe and the right end of the discharge pipe, and the first driving device can drive the left end of the push rod to move to the discharge pipe on the right side of the discharge port.

[0005] Further, the first driving device is a pneumatic cylinder, and the extending rod of the pneumatic cylinder extends into the discharge pipe and is connected with the push rod.

[0006] Further, a circulating pipe is further provided, one end of the circulating pipe is connected with the discharge pipe, the connecting position of the circulating pipe and the discharge pipe is located between the discharge inlet and the discharge outlet, the other end of the circulating pipe is connected with the side wall of the slurry tank, and a circulating pump is arranged on the circulating pipe.

[0007] Further, a rotatable conveying rod is installed in the slurry tank, a second driving device for driving the conveying rod to rotate is installed outside the slurry tank, the second driving device is connected with the conveying rod, and the bottom of the conveying rod is provided with a spiral section for driving the material to move downward.

[0008] Further, the bottom of the slurry tank is funnel-shaped.

[0009] Further, the slurry tank is connected with a pressurizing pipe, and the pressurizing pipe is provided with a pressurizing valve.

[0010] Further, a clear liquid tank is further included, the clear liquid tank is arranged at the top of the slurry tank, the bottom of the clear liquid tank is communicated with the clear liquid outlet, a suction pipe is installed on the side wall of the clear liquid tank, and a suction pump is arranged on the suction pipe.

[0011] Further, a gas storage tank and a backflushing pipe are further included, a suction valve is arranged on the suction pipe, the suction valve is located between the inlet of the suction pipe and the suction pump, the two ends of the backflushing pipe are communicated with the gas storage tank and the clear liquid tank respectively, and a backflushing valve is arranged on the backflushing pipe.

[0012] Further, a pressure relief pipe is further included, the pressure relief pipe is communicated with the inside of the clear liquid tank and the outside of the clear liquid tank respectively, and the pressure relief pipe is provided with a pressure relief valve.

[0013] The non-agitation concentration machine has at least the following technical effects: 1. The push rod is arranged in the discharge pipe, the push rod can push the material in the discharge pipe to move to the direction of the discharge outlet, and thus when the discharge outlet of the slurry tank is blocked, the push rod can push the material out, thereby avoiding affecting the discharge of the concentration machine.

[0014] 2. The circulation pipe is arranged, part of the filter cake after concentration is conveyed to the reaction kettle through the discharge pipe to continue to participate in the reaction, and the other part of the filter cake after concentration is backflowed to the slurry tank through the circulation pipe and the circulation pump, so as to prevent the equipment from being blocked.

[0015] Additional aspects and advantages of the present application will be described in the following description, some of which will become apparent to those skilled in the art from the following description, some will be learned from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Additional aspects and advantages of the present application will become apparent from the following description of the technical solutions in conjunction with the accompanying drawings, in which: Figure 1 It is a structural schematic view of the non-agitation concentration machine of some embodiments of the present application; Figure 2 It is a bottom view of the filter rod mounted on the clamping plate; Figure 3 Structure diagram of the non-stirring concentrator of some other embodiments of the present application; Figure 4 Structure diagram of the connection between the filter stick and the clamping plate.

[0017] The reference signs: slurry tank 100, clamping plate 110, liquid discharge port 111, nut 112, discharge port 120, conveying rod 130, spiral section 131, second driving device 140, pressurizing pipe 150, pressurizing valve 151, feeding pipe 160, sealing pipe 170, filter stick 200, extension pipe 201, clear liquid discharge port 210, filtration inlet 220, discharge pipe 300, discharge inlet 310, discharge outlet 320, discharge pump 330, pushing structure 400, pushing rod 410, first driving device 420, circulating pipe 500, circulating pump 510, clear liquid tank 600, suction pipe 610, suction pump 611, suction valve 612, gas storage tank 700, backflushing pipe 800, backflushing valve 810, pressure relief pipe 900, pressure relief valve 910. DETAILED DESCRIPTION

[0018] The technical scheme of the present application is described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The technical scheme described below by referring to the drawings is exemplary and is only used to explain the present application, and cannot be understood as a limitation of the present application.

[0019] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0020] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0021] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0022] Refer toFigure 1 As shown, the stirless thickener provided in the embodiment of this utility model includes a slurry tank 100, a filter rod 200, a discharge pipe 300, and a pusher structure 400. A clamping plate 110 is installed inside the slurry tank 100, and the bottom of the slurry tank 100 has a discharge port 120. The slurry tank 100 has a feed pipe 160 located between the clamping plate 110 and the discharge port 120. The filter rod 200 is located inside the slurry tank 100, with its upper end mounted on the clamping plate 110. The upper end of the filter rod 200 has a clear liquid outlet 210. It has a filter inlet 220 located below the card plate 110; the discharge pipe 300 is placed horizontally, and the discharge pipe 300 has a discharge inlet 310 and a discharge outlet 320, the discharge inlet 310 being connected to the discharge port 120; the pushing structure 400 includes a push rod 410 and a first driving device 420 for driving the push rod 410 to move, the push rod 410 being movably located inside the discharge pipe 300 and connected to the first driving device 420, the push rod 410 being able to push the material inside the discharge pipe 300 toward the discharge outlet 320. By providing a push rod 410 inside the discharge pipe 300, the push rod 410 can push the material inside the discharge pipe 300 towards the discharge outlet 320. Thus, when the discharge outlet 120 of the slurry tank 100 is blocked, the push rod 410 can push the material out, thus avoiding affecting the discharge of the thickener.

[0023] When the stirless thickener is working, the operator feeds slurry into the slurry tank 100 through the feed pipe 160, so that the slurry level reaches the set fixed height and the slurry contacts the filter rod 200. Under the action of the external suction equipment (which can be understood as, or through other structures as long as a negative pressure is maintained at the clear liquid outlet 210 so that the clear liquid can flow out from the clear liquid outlet 210), the slurry in the slurry tank 100 will keep flowing towards the clear liquid outlet 210. When the slurry flows towards the clear liquid outlet 210, the filter rod 200 will filter the slurry. The filtered clear liquid will enter the filter rod 200 and then be discharged from the clear liquid outlet 210. The filtered filter cake will be discharged from the discharge port 120 under its own weight and enter the discharge pipe 300, and then be discharged through the discharge pipe 300. When the filter cake becomes blocked in the discharge pipe 300 at the discharge port 120, the first drive device 420 is activated. The first drive device 420 drives the push rod 410 to move, and the push rod 410 pushes the material to move towards the discharge outlet 320, so that it is discharged from the outlet of the discharge pipe 300.

[0024] Specifically, such as Figure 1 As shown, the side wall of the slurry tank 100 is provided with a feed pipe 160. The feed pipe 160 is inclined downwards, and the end of the feed pipe 160 away from the slurry tank 100 is the high end. The feed pipe 160 adopts the above design method to make the slurry easier to enter the slurry tank 100.

[0025] Specifically, the inlet of the feeding pipe 160 is connected with the reaction kettle outside the non-agitation thickener, the discharge outlet 320 is connected with the reaction kettle, and then the reaction kettle can deliver the slurry to the slurry tank 100 through the feeding pipe 160, and the filter cake of the discharge pipe 300 can flow back to the reaction kettle for continuous reaction.

[0026] Specifically, the outer side wall of the clamping plate 110 is fixedly connected with the inner wall of the slurry tank 100, as shown in Figure 2 As shown in the figure, the clamping plate 110 is provided with multiple rings of filter assemblies, and the multiple rings of filter assemblies are sequentially arranged along the radial direction of the clamping plate 110. Each ring of filter assemblies includes multiple filter rods 200 arranged at intervals in the circumferential direction.

[0027] By arranging multiple rings of filter assemblies, and multiple filter rods 200 are arranged on the clamping plate 110, the filtering area is increased, the filtering efficiency is optimized, the filter cake is formed, and thus the overall production efficiency and economy are improved.

[0028] Specifically, as shown in Figure 4 The top of the filter rod 200 extends an extension pipe 201 upwards, the outer side wall of the extension pipe 201 is provided with threads, the extension pipe 201 penetrates the liquid discharge port 111 upwards and is connected with a nut 112, the nut 112 is located above the clamping plate 110, the outer wall of the extension pipe 201 is sealingly connected with the liquid discharge port 111, and the outlet at the upper end of the extension pipe 201 is a clear liquid outlet 210.

[0029] Further, as shown in Figure 1 The discharge outlet 320 is located at the left end of the discharge pipe 300, the first driving device 420 is installed at the right end of the discharge pipe 300, and the discharge inlet 310 is located between the left end of the discharge pipe 300 and the right end of the discharge pipe 300. The first driving device 420 can drive the left end of the push rod 410 to move to the discharge pipe 300 (α) located to the right of the discharge outlet 120.

[0030] Since the discharge inlet 310 is located between the left end of the discharge pipe 300 and the right end of the discharge pipe 300, the discharge pipe 300 (α) located to the right of the discharge outlet 120 can be used to accommodate the push rod 410. Thus, when pushing is not needed, the push rod 410 is completely located on the discharge pipe 300 to the right of the discharge outlet 120, and the push rod 410 does not affect the discharge of the discharge pipe 300. When pushing is needed, the push rod 410 moves to the left and pushes the material blocked at the discharge outlet 120 out.

[0031] Further, the first driving device 420 is a pneumatic cylinder, and the extending rod of the pneumatic cylinder extends into the discharge pipe 300 and is connected with the push rod 410.

[0032] The pneumatic cylinder is used to drive the push rod 410 to move, so as to facilitate the driving of the push rod 410 and simplify the structure.

[0033] Specifically, the PLC sends a signal to control the compressed air into the cylinder through the electromagnetic valve to drive the push rod 410 to reciprocate, realizing automatic and timed cleaning function, effectively preventing pipeline blockage. In the early stage of the experiment, due to the low solid content of the slurry, the slurry has good fluidity, and the cylinder can be selected to be enabled or not enabled according to the actual situation; as the experiment proceeds to the later stage, the particles gradually grow, resulting in increased pumping resistance and slowed slurry flow, and blockage is prone to occur during the flow splitting process, at which time the cylinder can be started to timely dredge the slurry flowing to the bottom of the slurry tank 100 and transport it to the reaction kettle for continuous reaction or return it to the slurry tank 100 for reflux, ensuring stable and continuous operation of the system.

[0034] Further, as shown in Figure 3 , it further comprises a circulating pipe 500, one end of the circulating pipe 500 is connected with the discharge pipe 300, the connection between the circulating pipe 500 and the discharge pipe 300 is located between the discharge inlet 310 and the discharge outlet 320, the other end of the circulating pipe 500 is connected with the side wall of the slurry tank 100, and a circulating pump 510 is arranged on the circulating pipe 500.

[0035] By arranging the circulating pipe 500, part of the filter cake after concentration is transported to the reaction kettle through the discharge pipe 300 to continue to participate in the reaction, and the other part after concentration is returned to the slurry tank 100 through the circulating pipe 500 and the circulating pump 510 to prevent equipment blockage.

[0036] Specifically, the circulating pump 510 can be selected according to the type of the material to be treated and the working environment, for example, when treating precursor materials, the circulating pump 510 can use a pneumatic pump, and when treating other materials, a water pump or other type of pump can be selected according to the material properties and the environment.

[0037] Further, as shown in Figure 1 , a rotatable conveying rod 130 is installed in the slurry tank 100, a second driving device 140 for driving the conveying rod 130 to rotate is installed outside the slurry tank 100, the second driving device 140 is connected with the conveying rod 130, and the bottom of the conveying rod 130 has a spiral section 131 for driving the material to move downward.

[0038] By arranging the spiral section 131, pipeline blockage caused by thick or hardened concentrated slurry can be effectively prevented.

[0039] The spiral section 131 cooperates with the push rod 410 to further enhance the conveying capacity of high-viscosity or easily deposited materials, effectively avoid material retention or blockage in the pipeline, and ensure continuous and stable operation of the entire concentration and conveying process.

[0040] Further, as shown in Figure 1 , the bottom of the slurry tank 100 is funnel-shaped, which promotes the slurry to quickly concentrate at the bottom and smoothly flow to the discharge pipe 300.

[0041] Further, as shown in Figure 1 The slurry tank 100 is connected with a pressurizing pipe 150, the pressurizing pipe 150 is provided with a pressurizing valve 151, the pressurizing pipe 150 is connected with an external pressurizing device, when it is needed to quickly produce the supernatant, the pressurizing valve 151 is opened, the pressurizing device pressurizes the slurry tank 100 through the pressurizing pipe 150, the filter stick 200 is accelerated to filter, and then a large amount of supernatant is quickly pressed out.

[0042] Further, as shown in Figure 3 The supernatant tank 600 is further arranged on the top of the slurry tank 100, the bottom of the supernatant tank 600 is communicated with the supernatant outlet 210, and the sidewall of the supernatant tank 600 is provided with a suction pipe 610, and the suction pipe 610 is provided with a suction pump 611.

[0043] Since a large amount of supernatant is generated, the supernatant tank 600 is further designed, the supernatant tank 600 can store the supernatant discharged from the supernatant outlet 210, effectively avoids that the supernatant cannot be discharged in time and is mixed with the concentrated slurry, and ensures the separation effect and stable operation of the subsequent process.

[0044] When working, the suction pump 611 is started, under the action of the suction pump 611, the filter stick 200 filters the slurry, the filtered supernatant enters the supernatant tank 600 through the supernatant outlet 210, and then is discharged from the suction pipe 610.

[0045] Specifically, the suction pump 611 can be selected according to the type of the processing material and the working environment, for example, when processing the precursor material, the suction pump 611 can adopt a pneumatic pump, and when processing other materials, a water pump or other type of pump can be selected according to the material properties and the environment.

[0046] Specifically, the tank body is further provided with a clamping plate 110, the clamping plate 110 divides the inside of the tank body into two parts, one part is used to form the supernatant tank 600, and the other part is used to form the slurry tank 100.

[0047] Further, as shown in Figure 3 The suction pipe 610 is further provided with a suction valve 612, the suction valve 612 is located between the inlet of the suction pipe 610 and the suction pump 611, the backflush pipe 800 is communicated with the gas storage tank 700 and the supernatant tank 600 at two ends, and the backflush pipe 800 is provided with a backflush valve 810.

[0048] By arranging the gas storage tank 700 and the backflush pipe 800, the filter cake on the outer surface of the filter stick 200 can be made to fall off through compressed air.

[0049] During operation, the suction valve 612 is closed and the backflush valve 810 is opened. The high-pressure compressed air stored in the air tank 700 enters the clear liquid tank 600 through the backflush pipe 800. The compressed air or supernatant in the clear liquid tank 600 is instantly and violently rushed into the interior of the filter rod 200, causing the filter cake to crack and peel off from the surface of the filter rod 200 as a whole, and then fall to the bottom of the slurry tank 100.

[0050] Furthermore, such as Figure 3 As shown, it also includes a pressure relief pipe 900, which is connected to the inside of the clear liquid tank 600 and the outside of the clear liquid tank 600 respectively, and the pressure relief pipe 900 is equipped with a pressure relief valve 910.

[0051] If the system pressure is too high during the filtration process, the pressure relief valve 910 can be opened through the pressure relief pipe 900 to release pressure and vent air through the pressure relief pipe 900, ensuring safe operation.

[0052] Specifically, it also includes a sealing tube 170, a slurry tank 100, and a clear liquid tank 600, all designed as a single unit. The second drive device 140 is installed on the top of the clear liquid tank 600. The sealing tube 170 is located inside the clear liquid tank 600, with its upper end fixedly connected to the upper end of the interior of the clear liquid tank 600. The sealing tube 170 passes downward through the bottom wall of the clear liquid tank 600 and communicates with the interior of the slurry tank 100. That is, the slurry tank 100 and the clear liquid tank 600 are only connected through the clear liquid outlet 210 and the filter inlet 220 of the filter rod 200. The conveying rod 130 is rotatably located inside the sealing tube 170, with its upper end connected to the second drive device 140. By setting the sealing tube 170, it is ensured that the second drive device 140 can be installed on the top of the slurry tank 100, and the supernatant in the clear liquid tank 600 will not enter the slurry tank 100.

[0053] Specifically, the second drive unit 140 is a motor.

[0054] Specifically, such as Figure 3 As shown, a discharge pump 330 is provided on the discharge pipe 300, and the discharge pump 330 is located upstream of the connection between the circulation pipe 500 and the discharge pipe 300.

[0055] Specifically, the discharge pump 330 can be selected according to the type of material being processed and the working environment. For example, when processing precursor materials, the discharge pump 330 can be a pneumatic pump, while when processing other materials, a water pump or other types of pumps can be selected based on the material properties and the environment.

[0056] When this utility model is in operation: like Figure 1 , 2As shown in Figure 3, before the reaction begins, the second drive device 140 and the first drive device 420 are activated. The slurry in the reactor enters the slurry tank 100 at an oblique angle through the feed pipe 160. The solids in the slurry will sink to the bottom of the slurry tank 100 under their own weight and will not participate in the filtration of the filter rods 200. When the slurry level reaches the set fixed height, multiple filter rods 200 are already immersed in the slurry. The pressurization valve 151, the suction valve 612, the suction pump 611, the discharge pump 330, and the circulation pump 510 are opened. The discharge pump 330 is used to control the flow rate of the material returning to the reactor, and the circulation pump 510 is used to control the flow rate of the material returning to the slurry tank 100. The flow rates controlled by the discharge pump 330 and the circulation pump 510 are set to be less than the feed rate of the feed pipe 160, thereby ensuring that the slurry level is always higher than the lower end face of the filter rods and ensuring that multiple filter rods 200 can perform filtration. As the pressure valve 151 opens, the external pressure equipment pressurizes the slurry tank 100. During the reaction process, the pressure valve 151, the suction valve 612 and the suction pump 611 work together to achieve precise control of the discharge flow and pressure of the slurry tank 100, effectively avoiding liquid level fluctuations or unstable discharge caused by changes in material properties.

[0057] Under pressure, the slurry is simultaneously filtered through multiple filter rods 200. The filtered clear liquid enters the clear liquid tank 600 through the clear liquid outlet 210 and is discharged from the clear liquid tank 600 through the suction pipe 610.

[0058] As the thickness of the filter cake on the surface of the filter rod 200 gradually increases, the filtration efficiency decreases accordingly. At this time, the filtration is stopped, the backwash valve 810 is opened, and the high-pressure compressed air stored in the air tank 700 enters the clear liquid tank 600. The compressed air or supernatant in the clear liquid tank 600 is instantly and violently rushed into the interior of the filter rod 200, causing the filter cake to crack and peel off from the surface of the filter rod 200 as a whole. Driven by the second drive device 140, the conveying rod 130 rotates continuously, and the spiral section 131 at the bottom of the conveying rod 130 drives the material to move downward. Under the action of its own gravity, the spiral section 131 and the funnel-shaped bottom of the slurry tank 100, and due to the opening of the circulation pump 510 and the discharge pump 330, a portion of the concentrated filter cake is transported to the reactor through the discharge pipe 300 to continue participating in the reaction, while the other portion is returned to the slurry tank 100 through the circulation pipe 500 and the circulation pump 510. When the filter cake becomes blocked in the discharge pipe 300 at the discharge port 120, the first drive device 420 is activated, and the first drive device 420 drives the push rod 410 to move. The push rod 410 pushes the filter cake to move towards the discharge outlet 320. The filter cake can be conveyed to the reactor or returned to the slurry tank 100.

[0059] Compared with a concentrator with stirring, this utility model adopts the above-mentioned design, which has a simpler structure, lower manufacturing cost, lower energy consumption, larger filtration area, and higher working efficiency. At the same time, it avoids the shearing and damage of the formed particles by mechanical stirring, which is conducive to the further growth and compression of the particles, thereby improving the concentration effect.

[0060] Although the technical solutions of this utility model have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these technical solutions without departing from the principles and spirit of this utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A stirless concentrator, characterized in that, include: A slurry tank (100) is provided with a clamping plate (110) installed inside the slurry tank (100), and a discharge port (120) is provided at the bottom of the slurry tank (100). The slurry tank (100) has a feed pipe (160) located between the clamping plate (110) and the discharge port (120). A filter rod (200) is located inside the slurry tank (100). The upper end of the filter rod (200) is mounted on the clamping plate (110). The upper end of the filter rod (200) has a clear liquid outlet (210). The filter rod (200) has a filter inlet (220) located below the clamping plate (110). The discharge pipe (300) is horizontally placed and has a discharge inlet (310) and a discharge outlet (320). The discharge inlet (310) is connected to the discharge outlet (120). The pusher structure (400) includes a push rod (410) and a first drive device (420) for driving the push rod (410) to move. The push rod (410) is movably located inside the discharge pipe (300) and connected to the first drive device (420). The push rod (410) can push the material in the discharge pipe (300) toward the discharge outlet (320).

2. The stirless concentrator according to claim 1, characterized in that: The discharge outlet (320) is located at the left end of the discharge pipe (300), the first drive device (420) is installed on the right end of the discharge pipe (300), the discharge inlet (310) is located between the left end and the right end of the discharge pipe (300), and the first drive device (420) can drive the left end of the push rod (410) to move to the discharge pipe (300) located to the right of the discharge port (120).

3. The stirless concentrator according to claim 2, characterized in that: The first driving device (420) is a cylinder, and the cylinder's extension rod extends into the discharge pipe (300) and is connected to the push rod (410).

4. The stirless concentrator according to claim 1, characterized in that: It also includes a circulation pipe (500), one end of which is connected to the discharge pipe (300), the connection between the circulation pipe (500) and the discharge pipe (300) is located between the discharge inlet (310) and the discharge outlet (320), the other end of which is connected to the side wall of the slurry tank (100), and a circulation pump (510) is provided on the circulation pipe (500).

5. The stirless concentrator according to any one of claims 1-4, characterized in that: A rotatable conveying rod (130) is installed inside the slurry tank (100), and a second driving device (140) for driving the conveying rod (130) to rotate is installed outside the slurry tank (100). The second driving device (140) is connected to the conveying rod (130), and the bottom of the conveying rod (130) has a spiral section (131) for driving the material to move downward.

6. The stirless concentrator according to claim 5, characterized in that: The bottom of the slurry tank (100) is funnel-shaped.

7. The stirless concentrator according to claim 1, characterized in that: The slurry tank (100) is connected to a pressure pipe (150), and the pressure pipe (150) has a pressure valve (151).

8. The stirless concentrator according to claim 1 or 7, characterized in that: It also includes a clear liquid tank (600), which is located on top of the slurry tank (100). The bottom of the clear liquid tank (600) is connected to the clear liquid outlet (210). A suction pipe (610) is installed on the side wall of the clear liquid tank (600), and a suction pump (611) is provided on the suction pipe (610).

9. The stirless concentrator according to claim 8, characterized in that: It also includes a gas storage tank (700) and a backflush pipe (800). The suction pipe (610) is equipped with a suction valve (612). The suction valve (612) is located between the inlet of the suction pipe (610) and the suction pump (611). The two ends of the backflush pipe (800) are respectively connected to the gas storage tank (700) and the clear liquid tank (600). The backflush pipe (800) is equipped with a backflush valve (810).

10. The stirless concentrator according to claim 8, characterized in that: It also includes a pressure relief pipe (900), which is connected to the inside of the clear liquid tank (600) and the outside of the clear liquid tank (600) respectively, and the pressure relief pipe (900) is equipped with a pressure relief valve (910).

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