A double-layer screening solid-liquid separation device

Abstract

The present invention relates to the field of garbage disposal equipment, and in particular discloses a double-layer screening solid-liquid separation device, including a frame, a first feeding channel, a third feeding chute and a screening mechanism, wherein the third feeding chute is arranged at the rear above the frame, its front end is arranged forward, and its rear end is inclined downward and extends outside the frame, the third feeding chute is fixedly connected to the frame through a first fixing member, the first feeding channel has a feeding end and a discharging end, which is arranged at the front end of the third feeding chute and is slidably connected to the frame, the driving mechanism is arranged on the frame and is transmission-connected to the first feeding channel, the driving mechanism drives the first feeding channel to move along the front-to-back direction to approach or away from the front end of the third feeding chute, the screening mechanism has a feeding end, a liquid material discharging end and a solid material discharging end, which is arranged below the third feeding chute and is fixedly connected to the frame.

Description

Technical Field

[0001] The invention relates to the field of garbage processing equipment, and in particular to a double-layer screening solid-liquid separation device. Background Art

[0002] In real life, there are many cases where immovable solid-liquid mixtures are generated, such as urban wastewater, industrial products and wastewater, smelting wastewater, infrastructure mud, etc., which are important judgment bases for judging their work progress and construction progress. At present, the treatment methods for immovable solid-liquid mixtures at home and abroad are not to separate solid and liquid substances, but to directly discharge them, which makes the spatial environment of the area where the solid-liquid mixture is located become harsh and even cause environmental pollution. Therefore, the present invention aims to provide a device that can realize the separation of solid components and liquid components in solid-liquid mixtures. Summary of the invention

[0003] In view of this, the present invention provides a double-layer screening solid-liquid separation device.

[0004] The present invention provides a double-layer screening solid-liquid separation device, comprising a frame, a first feeding channel, a third feeding chute and a screening mechanism, wherein the third feeding chute is arranged above the frame, with its front end arranged forward, and its rear end inclined downward and extending outside the frame, the third feeding chute is fixedly connected to the frame through a first fixing member, the first feeding channel is arranged at the front end of the third feeding chute and is slidably connected to the frame, the driving mechanism is arranged on the frame and is transmission-connected to the first feeding channel, and the driving mechanism drives the first feeding channel to move along the front-to-back direction to the front of the third feeding chute close to or away from the front of the third feeding chute end, the screening mechanism has a feeding end, a liquid material discharging end and a solid material discharging end, which is arranged below the third feeding chute and fixedly connected to the frame, when the first feeding channel is away from the third feeding chute, the discharging end of the first feeding channel is connected with the feeding end of the screening mechanism, the first feeding channel is used to transport the solid-liquid mixture to the third feeding chute or the screening mechanism, the screening mechanism is used to separate the liquid and solid materials of the solid-liquid mixture, and a collecting device is provided at the rear end of the third feeding chute, the liquid material discharging end and the solid material discharging end of the screening mechanism.

[0005] Further, the first feeding channel is composed of a first feeding chute and a second feeding chute, the first feeding chute and the second feeding chute are both strip-type structures, the third feeding chute is an "L"-shaped structure, and its rear end is arranged toward the right side of the frame, the first feeding chute is arranged in a tilted downward direction in front of the front end of the third feeding chute, and is fixedly connected to the frame through a third fixing member, the second feeding chute is arranged between the first feeding chute and the third feeding chute, the front end of the second feeding chute is arranged upward, and the rear end of the second feeding chute is tilted downward and arranged toward the front end of the third feeding chute, the front end of the second feeding chute is slidably connected to the lower end of the rear end of the first feeding chute, and can slide back and forth along the rear end of the first feeding chute, the first feeding chute, the second feeding chute and the third feeding chute are all located on the same inclined plane, the driving mechanism is transmission-connected to the second feeding chute, and drives the rear end of the second feeding chute to approach or move away from the front end of the third feeding chute.

[0006] Furthermore, the driving mechanism includes an electric cylinder and a push plate, the electric cylinder is arranged below the first feeding chute, the driving rod of which is arranged rearwardly and is fixedly connected to the frame through a second fixing member, the push plate is an "L"-shaped structure, the horizontal end of which is fixedly connected to the driving rod of the electric cylinder, and the vertical end of which is fixedly connected to the lower end of the second feeding chute, and the electric cylinder drives the push plate through its driving rod to drive the second feeding chute to move in the front and rear directions.

[0007] Further, the screening mechanism includes a first sieve plate, a second sieve plate and a water trough, a horizontally arranged support platform is provided on the frame, the water trough is a rectangular structure, its interior is hollow and the upper end is open, the water trough is arranged below the third feeding chute in a forward and backward direction and tilted downward, and its lower end is fixed to the upper end of the support platform by a plurality of fixing units, the first sieve plate and the second sieve plate are both rectangular structures, which are spaced up and down and are arranged at the upper end of the water trough in a forward and backward direction and tilted downward, the left and right sides of the first sieve plate and the second sieve plate are respectively fixedly connected to the upper end of the corresponding side of the water trough through fixing plates, the first sieve plate is provided with a first screen, the second sieve plate is provided with a second screen, the aperture of the first screen is larger than the aperture of the second screen, the rear end of the second sieve plate is provided with a guide groove, the rear end of the left side of the water trough is provided with a liquid outlet connected to the interior thereof, and a conduit is provided at the liquid outlet, the collecting device is provided below the guide groove and the conduit, and an electric vibrator is provided at the lower end of the water trough.

[0008] Furthermore, there are four fixing units, and they are correspondingly arranged at the lower ends of the four right angles of the water sink, each of the fixing units includes a spring and two sleeves, the two sleeves are vertically arranged, one of the sleeves is arranged at the upper end of the support platform, and the other sleeve is arranged at the lower end of any right angle of the water sink, and the two sleeves are located on the same straight line, the spring is vertically arranged between the two sleeves, the upper end of the spring is fixedly connected to the sleeve at the lower end of the water sink, and the lower end of the spring is fixedly connected to the sleeve at the upper end of the support platform.

[0009] Furthermore, the material collecting device is a material collecting barrel, and the material collecting barrel is a cylindrical structure with a closed lower end.

[0010] The beneficial effect brought about by the technical solution provided by the present invention is: a double-layer screening solid-liquid separation device described in the present invention, by tilting the first feeding chute, the second feeding chute and the third feeding chute, can directly transport the solid-liquid mixture to the gathering device for collection without manual operation or the help of external power facilities. It has the advantages of convenient operation and energy saving and environmental protection, and the gravity conveying power also has the advantage of fast conveying speed, which is beneficial to improving the separation efficiency of the solid-liquid separation device.

[0011] The setting of the handle and casters can facilitate the free movement of the solid-liquid separation device, so that the separation test is not limited by the site. The screening mechanism has a dual screening function to improve its screening accuracy. The first screen, the second screen and the water tank are all tilted. Among them, the tilted setting of the first screen and the second screen is conducive to the dispersion of the solid-liquid mixture after falling on the first screen and the second screen, preventing the accumulation of the solid-liquid mixture, thereby speeding up the screening speed of the solid-liquid mixture. On the other hand, it can directly transport the solid material to the gap and the guide groove without the help of manual or electrical equipment, which has the advantages of energy saving and environmental protection; the tilted setting of the water tank is also conducive to the automatic discharge of liquid materials. The electric vibrator can achieve the purpose of improving the screening capacity of the first screen and the second screen by increasing the vibration amplitude of the water tank, thereby increasing the screening speed of the screening mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a double-layer screening solid-liquid separation device according to the present invention;

[0013] Figure 2 It is a structural schematic diagram of a double-layer screening solid-liquid separation device according to the present invention;

[0014] Figure 3 It is a structural schematic diagram of a double-layer screening solid-liquid separation device according to the present invention;

[0015] Figure 4 It is a structural schematic diagram of the screening mechanism of the present invention;

[0016] Figure 5 It is a structural schematic diagram of another embodiment of the screening mechanism of the present invention. DETAILED DESCRIPTION

[0017] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0018] Please refer to Figure 1-2 , an embodiment of the present invention provides a double-layer screening solid-liquid separation device, including a frame 10, a third feeding chute 20, a first feeding channel and a screening mechanism, the frame 10 is provided with a horizontally arranged support platform 13, the lower end of the frame 10 is provided with a plurality of casters 14, the upper end of the frame 10 is provided with two first support rods 15, the first support rods 15 are angle steels, the two first support rods 15 are arranged at the upper end of the frame 10 in parallel and spaced from left to right, and a handle 16 arranged along the left and right directions is arranged between the front ends of the two first support rods 15, and the rear ends thereof are both inclined downward, the third feeding chute 20 is an L-shaped structure, which is horizontally arranged at the rear part above the frame 10 in the front-to-back direction, and the left and right sides thereof are respectively connected and fixed with the two first support rods 15 by first fixing members 21, wherein the first fixing member 21 is also an angle steel, and the rear end of the third feeding chute 20 is inclined downward and extends to the outside of the frame 10, the first feeding channel has There is a feed end and a discharge end, which are slidably mounted on the upper ends of the two first support rods 15, and a driving mechanism is provided between the two first support rods 15, the driving mechanism is transmission-connected with the first feeding channel, and drives the first feeding channel to move forward and backward to approach or away from the front end of the third feeding chute 20, the screening mechanism is arranged below the third feeding chute 20, and is fixedly connected to the frame 10, the screening mechanism has a feed end, a liquid material discharge end and a solid material discharge end, when the first feeding channel is away from the third feeding chute 20, the discharge end of the first feeding channel is connected with the feed end of the screening mechanism, the first feeding channel is used to transport the solid-liquid mixture to the third feeding chute 20 or the screening mechanism, the screening device is used to separate the liquid material and the solid material of the solid-liquid mixture, and a collecting device 30 is provided below the rear end of the third feeding chute 20, the liquid material discharge end and the solid material discharge end of the screening mechanism.

[0019] In the above embodiment, the solid-liquid mixture enters the first feeding channel through the feeding end of the first feeding channel. When it is not necessary to separate the liquid and solid substances of the solid-liquid mixture, the driving mechanism drives the first feeding channel to move to the front end close to the third feeding chute 20. At this time, the feeding end of the first feeding channel is connected with the front end of the third feeding chute 20, and the solid-liquid mixture is transported to the third feeding chute 20. Under the action of gravity, the solid-liquid mixture automatically moves to the rear end of the third feeding chute 20 and falls into the collection bucket set at the rear end of the third feeding chute 20 for collection. When it is necessary to separate the liquid and solid substances of the solid-liquid mixture, the driving mechanism The structure drives the feed end of the first feed channel away from the front end of the third feed chute. At this time, the discharge end of the first feed channel is connected with the feed end of the screening mechanism. The first feed channel transports the solid-liquid mixture to the feed end of the screening mechanism, and the screening mechanism separates the liquid matter and the solid matter in the solid-liquid mixture. The liquid matter is output from the liquid matter discharge end of the screening mechanism and is recovered by the collection device 30 arranged below the liquid matter discharge end. The solid matter is output from the solid matter discharge end of the screening mechanism and is recovered by the collection device 30 arranged below the solid matter discharge end. The solid-liquid separation device described in this embodiment can directly transport the solid-liquid mixture to the collecting device 30 for collection by tilting the third feeding chute 20 without manual operation or the help of external power facilities. It has the advantages of convenient operation, energy saving and environmental protection, and the gravity conveying power also has the advantage of fast conveying speed, which is beneficial to improving the separation efficiency of the solid-liquid separation device. The setting of the handle 16 and the casters 14 can facilitate the free movement of the solid-liquid separation device, so that the separation test is not limited by the site.

[0020] In the above embodiment, the first feeding channel is composed of a first feeding chute 40 and a second feeding chute 41, both of which are strip-shaped structures. The first feeding chute 40 is arranged in front of the third feeding chute 20 along the front-to-back direction, and is fixedly connected to the two first support rods 15 through a third fixing member 44, with its front end arranged upward and its rear end arranged downward. The first feeding chute 40 and the third feeding chute 20 are located on the same inclined plane, and the second feeding chute 41 is arranged on the first feeding chute. Between the chute 40 and the third feeding chute 20, its front end is arranged upward, and is slidably connected to the lower end of the rear end of the first feeding chute 40, and can slide forward and backward along the rear end of the first feeding chute 40, and its rear end is inclined downward and arranged toward the front end of the third feeding chute 20, the first feeding chute 40, the second feeding chute 41 and the third feeding chute 20 are all located on the same inclined surface, the driving mechanism is transmission-connected to the second feeding chute 41, and drives the rear end of the second feeding chute 41 to approach or move away from the front end of the third feeding chute 20. The third fixing member 44 includes two angle steels spaced front and back at the upper end of the first support rod 15, and the angle steels are arranged in the left and right directions.

[0021] In the above embodiment, the front end of the first feeding chute 40 constitutes the feed end of the first feeding channel, and the rear end of the second feeding chute 41 constitutes the discharge end of the first feeding channel, and the solid-liquid mixture enters the first feeding channel through the front end of the first feeding chute 40. When it is not necessary to separate the liquid and solid substances of the solid-liquid mixture, the driving mechanism drives the second feeding chute 41 to move backward until its rear end is close to the front end of the third feeding chute 20, and communicates with the front end of the third feeding chute 20; when it is necessary to separate the liquid and solid substances of the solid-liquid mixture, the driving mechanism drives the second feeding chute 41 to move forward away from the front end of the third feeding chute, so that a feeding channel is formed between the second feeding chute 41 and the third feeding chute 20. At this time, the feeding channel is connected with the feeding end of the screening mechanism, and the solid-liquid mixture passes through the first feeding chute 40, the second feeding chute 41 and the feeding channel respectively, and is transported to the feeding end of the screening mechanism. As another embodiment of the first feeding channel, the first feeding chute 40 and the second feeding chute 41 can also be integrally formed as a strip-shaped feeding chute, and are obliquely arranged on the two first support rods 15 along the front-to-back direction, and the rear end is driven by a driving mechanism to approach the front end of the third feeding chute 20.

[0022] In the above embodiment, the driving mechanism includes an electric cylinder 50 and a push plate 51. The electric cylinder 50 is arranged between the two first support rods 15 along the front-to-back direction, and its driving rod is arranged backward. The electric cylinder 50 is fixedly connected to the two first support rods 15 through a second fixing member. The push plate 51 is an "L"-shaped structure, and its horizontal end is fixedly connected to the driving rod of the electric cylinder 50, and its vertical end is fixedly connected to the lower end of the second feeding chute 41. The electric cylinder 50 drives the push plate 51 through its driving rod to drive the second feeding chute 41 to move along the front-to-back direction. Among them, the push plate 51 and the second fixing member are angle steel. The electric cylinder 50 in this embodiment has the advantages of accurate driving direction, fast driving speed and convenient operation.

[0023] In the above embodiment, if Figure 3-4As shown, the screening mechanism includes a first sieve plate 60, a second sieve plate 61 and a water trough 62. The frame 10 is provided with a horizontally arranged support platform 13. The water trough 62 is a rectangular structure, which is hollow inside and has an upper end open. The water trough 62 is arranged obliquely below the third feeding chute 20 along the front-to-back direction, and its inclination direction is from front to back. The lower end is fixed to the upper end of the support platform 13 by a plurality of fixing units. The first sieve plate 60 and the second sieve plate 61 are both rectangular structures, which are spaced up and down and are both arranged obliquely at the upper end of the water trough 62 along the front-to-back direction. The left and right sides of the second sieve plate 61 are respectively fixedly connected to the upper end of the corresponding side of the water trough 62 through a fixing plate 63, the first sieve plate 60 is provided with a first sieve 64, the second sieve plate 61 is provided with a second sieve 65, the aperture of the first sieve 64 is larger than the aperture of the second sieve 65, the rear end of the second sieve plate 61 is provided with a guide groove 66, the rear end of the left side of the water trough 62 is provided with a liquid outlet hole connected to the inside thereof, and a conduit 67 is provided at the liquid outlet, the guide groove 66 and the conduit 67 are provided below the collecting device 30, and the lower end of the water trough 62 is provided with an electric vibrator 68. Among them, the length and width of the first sieve 64, the second sieve 65 and the water trough 62 are consistent, and their front ends are all located below the rear end of the first feeding chute 40. The lower ends of the left and right sides of the second sieve plate 61 are connected and fixed to the upper ends of the corresponding sides of the water trough 62 by bolts and nuts, and the two sides of the first sieve plate 60 and the corresponding sides of the second sieve plate 61 are connected and fixed by vertically arranged strip fixing plates 63; the guide trough 66 includes a guide plate and two side plates of a trapezoidal structure, the guide plate is arranged obliquely downward, the end with a longer bottom side at the front end is connected to the notch, and the end with a shorter bottom side at the rear end extends obliquely downward, the two side plates are respectively vertically arranged on the two oblique sides of the guide plate, and are fixedly connected to the guide plate, and the height of the two side plates extends to the upper end of the fixing plate 63 arranged between the first sieve plate 60 and the second sieve plate 61, and the guide area of ​​the guide trough 66 from the front end to the rear end gradually decreases, which is conducive to concentrating the solid matter from the rear end of the guide trough 66 to flow into the gathering device 30 to prevent the solid matter from leaking out.

[0024] In the above embodiment, the guide groove 66 and the conduit 67 constitute the discharge end of the solid material and the discharge end of the liquid material, respectively; when the solid-liquid mixture is separated by the solid material and the liquid material, the solid-liquid mixture falls on the first screen 64, and is double-screened by the first screen 64 and the second screen 65, respectively, so that the solid material in the solid-liquid mixture is left on the first screen 64 and the second screen 65, respectively, and the liquid material enters the water tank 62 through the first screen 64 and the second screen 65, respectively. Under the action of gravity and the double sitting of the electric vibrator 68, the solid material on the first screen 64 and the second screen 65 moves to its corresponding rear end, and falls into the collection device 30 arranged below the guide groove 66 through the gap and the guide groove 66, and is collected by the collection device 30, and the liquid material also moves to the lower end of the bottom of the water tank 62 under the action of gravity, and flows into the collection device 30 arranged below the conduit 67 through the discharge port and the conduit 67, and is collected by the collection device 30. The screening mechanism in this embodiment has a dual screening function to improve its screening accuracy. The first screen 64, the second screen 65 and the water tank 62 are all arranged in an inclined manner. The inclined arrangement of the first screen 64 and the second screen 65 is, on the one hand, conducive to the dispersion of the solid-liquid mixture after falling on the first screen 64 and the second screen 65, preventing the accumulation of the solid-liquid mixture, thereby accelerating the screening speed of the solid-liquid mixture. On the other hand, the solid matter can be directly transported to the gap and the guide groove 66 without the help of manual or electrical equipment, which has the advantages of energy saving and environmental protection; the inclined arrangement of the water tank 62 is also conducive to the automatic discharge of liquid matter. The electric vibrator 68 can achieve the purpose of improving the screening capacity of the first screen 64 and the second screen 65 by increasing the vibration amplitude of the water tank, thereby improving the screening speed of the screening mechanism.

[0025] As another embodiment of the screening mechanism, Figure 5As shown, the screening mechanism includes a first sieve plate 60, a second sieve plate 61 and a separation box 621. The frame 10 is provided with a horizontally arranged support platform 13. The interior of the separation box 621 is hollow and the upper end is open. It is arranged obliquely along the front-to-back direction below the third feeding chute 20, and its inclination direction is from front to back and downward. The separation box 621 is fixed to the support platform 13 by a plurality of fixing units. The first sieve plate 60 and the second sieve plate 61 are both obliquely arranged in the separation box 621 along the front-to-back direction, and are arranged at intervals up and down. The first sieve plate 60 and the second sieve plate 61 are extended all around to the four inner sides of the separation box 621. The first sieve plate 60 is fixedly connected to the wall, a first sieve 64 is provided on the first sieve plate 60, a second sieve 65 is provided on the second sieve plate 61, and the aperture of the first sieve 64 is larger than the aperture of the second sieve 65, a rectangular notch is provided at the upper part of the rear side of the separation box 621 and is connected to the interior thereof, and the lower end of the notch extends to be flush with the rear end of the second sieve 65, a guide groove 66 is provided at the notch, a liquid outlet hole connected to the interior thereof is provided at the rear end of the left side of the separation box 621, and a conduit 67 is provided at the liquid outlet, the guide groove 66 and the lower part of the guide rail are both provided with the collecting device 30, and an electric vibrator 68 is provided at the lower end of the separation box 621. Among them, the front end of the separation box 621 is located below the rear end of the first feeding chute 40. The guide trough 66 includes a guide plate of a trapezoidal structure and two side plates. The guide plate is tilted downward, and the long end of the bottom side of the front end is connected to the notch, and the short end of the bottom side of the rear end extends tilted downward. The two side plates are respectively vertically arranged on the two oblique sides of the guide plate and fixedly connected to the guide plate. The side close to the separation box 621 is connected and fixed to the rear side of the separation box 621. The guide area of ​​the guide trough 66 gradually decreases from the front end to the rear end, which is conducive to concentrating the solid matter from the rear end of the guide trough 66 to flow into the collection device 30 to prevent the leakage of the solid matter.

[0026] In the above embodiment, there are four fixing units, which are correspondingly arranged at the lower ends of the four right angles of the water tank 62. Each fixing unit includes a spring 70 and two sleeves 71. The two sleeves 71 are arranged vertically, one of which is arranged at the upper end of the support platform 13, and the other sleeve 71 is arranged at the lower end of any right angle of the water tank 62. The two sleeves 71 are located on the same straight line. The spring 70 is vertically arranged between the two sleeves 71, and its upper end is fixedly connected to the sleeve 71 at the lower end of the water tank 62, and its lower end is fixedly connected to the sleeve 71 at the upper end of the support platform 13. Among them, the support platform 13 can be composed of a steel plate, or it can be composed of two steel bars spaced apart from each other. In this embodiment, the support platform 13 is composed of two steel bars spaced apart from each other, which is conducive to reducing the weight of the solid-liquid separation device.

[0027] In the above embodiment, the material collecting device 30 is a material collecting barrel, and the material collecting barrel is a cylindrical structure with a closed lower end.

[0028] In the above embodiment, the solid-liquid separation device further includes a first control button for controlling the operation of the electric cylinder 50 and a second control button 72 for controlling the electric vibrator 68. By pressing the first control button and the second control button 72, respectively, the electric cylinder 50 and the electric vibrator 68 can be turned on or off accordingly. Among them, the connection relationship between the first control button and the electric cylinder and the principle of controlling the start and stop of the electric cylinder are both prior arts, and the connection relationship between the second control button and the electric vibrator and the principle of controlling the start and stop of the electric vibrator are also prior arts, which will not be described in detail here.

[0029] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0030] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-layer screening solid-liquid separation device, characterized in that: The invention comprises a frame (10), a first feeding channel, a third feeding chute (20) and a screening mechanism, wherein the third feeding chute (20) is arranged above the frame (10), with its front end arranged forward and its rear end inclined downward and extending outside the frame (10), the third feeding chute (20) is fixedly connected to the frame (10) via a first fixing member (21), the first feeding channel is arranged at the front end of the third feeding chute (20) and is slidably connected to the frame (10), a driving mechanism is arranged on the frame (10) and is transmission-connected to the first feeding channel, and the driving mechanism drives the first feeding channel to move along the front-rear direction to approach or move away from the third feeding chute (20) The front end of the screening mechanism comprises a feeding end, a liquid material discharging end and a solid material discharging end, which are arranged below the third feeding chute (20) and are fixedly connected to the frame (10); when the first feeding channel is away from the third feeding chute (20), the discharging end of the first feeding channel is connected to the feeding end of the screening mechanism; the first feeding channel is used to transport the solid-liquid mixture to the third feeding chute (20) or the screening mechanism; the screening mechanism is used to separate the liquid material and the solid material of the solid-liquid mixture; a collecting device (30) is provided at the rear end of the third feeding chute (20) and below the liquid material discharging end and the solid material discharging end of the screening mechanism; The first feeding channel is composed of a first feeding chute (40) and a second feeding chute (41), the first feeding chute (40) and the second feeding chute (41) are both strip-shaped structures, the third feeding chute (20) is an "L"-shaped structure, and its rear end is arranged toward the right side of the frame (10), the first feeding chute (40) is arranged in a slanted downward direction in front of the front end of the third feeding chute (20) in the front-to-back direction, and is fixedly connected to the frame (10) through a third fixing member (44), and the second feeding chute (41) is arranged between the first feeding chute (40) and the third feeding chute (2 0), its front end is arranged upward, and its rear end is inclined downward and arranged toward the front end of the third feeding chute (20), the front end of the second feeding chute (41) is slidably connected to the lower end of the rear end of the first feeding chute (40), and can slide back and forth along the rear end of the first feeding chute (40), the first feeding chute (40), the second feeding chute (41) and the third feeding chute (20) are all located on the same inclined plane, the driving mechanism is transmission-connected to the second feeding chute (41), and drives the rear end of the second feeding chute (41) to approach or move away from the front end of the third feeding chute (20); Two first support rods (15) are provided at the upper end of the frame (10), and the first support rods (15) are both angle steels.

2. A double-layer screening solid-liquid separation device according to claim 1, characterized in that: The driving mechanism comprises an electric cylinder (50) and a push plate (51); the electric cylinder (50) is arranged below the first feeding chute (40); its driving rod is arranged rearwardly and is fixedly connected to the frame (10) via a second fixing member; the push plate (51) is an "L"-shaped structure; its horizontal end is fixedly connected to the driving rod of the electric cylinder (50); and its vertical end is fixedly connected to the lower end of the second feeding chute (41); the electric cylinder (50) drives the push plate (51) via its driving rod to drive the second feeding chute (41) to move in the front-rear direction.

3. A double-layer screening solid-liquid separation device according to claim 1, characterized in that: The screening mechanism comprises a first sieve plate (60), a second sieve plate (61) and a water trough (62); a horizontally arranged support platform (13) is provided on the frame (10); the water trough (62) is a rectangular structure, hollow inside and open at the top; the water trough (62) is arranged below the third feeding chute (20) in an inclined downward direction along the front-back direction, and the lower end of the water trough (62) is fixed to the upper end of the support platform (13) by a plurality of fixing units; the first sieve plate (60) and the second sieve plate (61) are both rectangular structures, spaced apart from each other and arranged at the upper end of the water trough (62) in an inclined downward direction along the front-back direction; the left and right sides of the first sieve plate (60) and the second sieve plate (61) are The two sides are fixedly connected to the upper ends of the corresponding sides of the water trough (62) through fixing plates (63), the first sieve plate (60) is provided with a first sieve (64), the second sieve plate (61) is provided with a second sieve (65), the aperture of the first sieve (64) is larger than the aperture of the second sieve (65), a guide groove (66) is provided at the rear end of the second sieve plate (61), a liquid outlet hole communicating with the interior of the water trough (62) is provided at the rear end of the left side of the water trough (62), and a conduit (67) is provided at the liquid outlet, the material collecting device (30) is provided below the guide groove (66) and the conduit (67), and an electric vibrator (68) is provided at the lower end of the water trough (62).

4. A double-layer screening solid-liquid separation device according to claim 3, characterized in that: Four fixing units are provided and are correspondingly arranged at the lower ends of four right angles of the water tank (62). Each fixing unit comprises a spring (70) and two sleeves (71). The two sleeves (71) are arranged vertically. One of the sleeves (71) is arranged at the upper end of the support platform (13), and the other sleeve (71) is arranged at the lower end of any right angle of the water tank (62). The two sleeves (71) are located on the same straight line. The spring (70) is vertically arranged between the two sleeves (71). The upper end of the spring (70) is fixedly connected to the sleeve (71) at the lower end of the water tank (62), and the lower end of the spring (70) is fixedly connected to the sleeve (71) at the upper end of the support platform (13).

5. A double-layer screening solid-liquid separation device according to claim 1, characterized in that: The material collecting device (30) is a material collecting barrel, and the material collecting barrel is a cylindrical structure with a closed lower end.

Images