A fluidized backfill soil equipment with a screening function

Abstract

A fluidized backfill soil equipment with a screening function, the fluidized backfill soil equipment comprising: a housing and a crushing mechanism, a screening mechanism, a chain harrow conveying mechanism and a mixing and stirring mechanism arranged in the housing, the chain harrow conveying mechanism and the mixing and stirring mechanism being fixed on the floor in the housing, the discharge end of the chain harrow conveying mechanism being arranged above the feed inlet of the mixing and stirring mechanism, the screening mechanism being arranged above the feed end of the chain harrow conveying mechanism, a cement feeding port being arranged on the housing on the side of the chain harrow conveying mechanism, the crushing mechanism being arranged between the screening mechanism and the mixing and stirring mechanism, the discharge port of the crushing mechanism being arranged facing the inside of the screening mechanism, and the feed inlet of the crushing mechanism being arranged at the opening at the top of the housing. This design not only integrates multiple functions, but also has a high degree of equipment integration and a high level of automation.

Description

Technical Field

[0001] The present invention relates to a fluidized backfill soil equipment with a screening function, and is specifically applicable to improving the automation degree of the fluidized backfill soil equipment. Background Art

[0002] After the urban pipeline system is laid, sandy soil or sand and gravel needs to be used for backfilling. Due to the narrow on-site space, small machinery or manual methods are commonly used for ramming, which often results in incomplete compaction at the armpit corners of the pipelines. The first-generation machine of this product is a fluidized soil production equipment ZL201910940897.9, a fluidized soil construction equipment, including: a traveling mechanism; an excavation and extrusion device for excavating the soil at the construction site to be constructed and crushing it, and the excavation and extrusion device is arranged at one end of the traveling mechanism; a stirring device for stirring the crushed soil and auxiliary materials to form fluidized soil, and the stirring device is arranged at the other end of the traveling mechanism; a screw conveyor for conveying the soil excavated and crushed by the excavation and extrusion device to the stirring device, the screw conveyor is arranged on the traveling mechanism, and the screw conveyor is located between the excavation and extrusion device and the stirring device; and a pouring device for pouring the fluidized soil stirred in the stirring device to the construction site to be constructed, and the pouring device is connected to the stirring device. This utility model still has the following defects:

[0003] 1. Some of the on-site muck contains large stones that cannot be broken, causing the equipment to jam, so it is necessary to screen the available muck in advance.

[0004] 2. The automation degree of the equipment is relatively low, it is not convenient to move, the pollution is large during the cement feeding process, and the feeding of additives is all completed manually, and the ratio is not accurate enough. Summary of the Invention

[0005] The purpose of the present invention is to overcome the problem of low automation degree in the prior art, and provides a fluidized backfill soil equipment with a screening function and a high automation degree.

[0006] To achieve the above purpose, the technical solution of the present invention is:

[0007] A fluidized backfill soil equipment with a screening function, the fluidized backfill soil equipment includes: a housing and a crushing mechanism, a screening mechanism, a chain harrow conveying mechanism and a mixing and stirring mechanism arranged in the housing, the chain harrow conveying mechanism and the mixing and stirring mechanism are fixed on the floor in the housing, the discharge end of the chain harrow conveying mechanism is arranged above the feed inlet of the mixing and stirring mechanism, the screening mechanism is arranged above the feed end of the chain harrow conveying mechanism, a cement feeding port is arranged on the housing on the side of the chain harrow conveying mechanism, the crushing mechanism is arranged between the screening mechanism and the mixing and stirring mechanism, the discharge port of the crushing mechanism is arranged facing the inside of the screening mechanism, and the feed inlet of the crushing mechanism is arranged at the opening at the top of the housing.

[0008] Two sets of crawler walking devices are respectively arranged on both sides of the bottom of the shell. The crawler walking devices are driven by hydraulic motors or diesel engines. The sides of the crawler walking devices are connected to the bottom of the shell through hydraulic lifting cylinders.

[0009] The feeding mechanism includes a rotating arm and a hopper. Both sides of the shell are connected to the side of the hopper through a rotating arm respectively. The lower end of the rotating arm is rotatably matched with the side of the shell, and the upper end of the rotating arm is rotatably matched with the hopper. The side of the shell is connected to the middle of the rotating arm through a rotating arm cylinder.

[0010] The crushing mechanism comprises a crushing shell, a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft are both rotatably matched with the crushing shell, the end of the first rotating shaft passes through the crushing shell and is driven and matched with the first driving motor, the end of the second rotating shaft passes through the crushing shell and is driven and matched with the second driving motor, the first rotating shaft is arranged in parallel with the second rotating shaft, the first rotating shaft and the second rotating shaft are sleeved with the same number of star-shaped rotating disks, the star-shaped rotating disks on the first rotating shaft are correspondingly arranged with the star-shaped rotating disks on the second rotating shaft, and each corner of the star-shaped rotating disks is connected to a hammer through a chain;

[0011] A feed inlet is provided on the top of the crusher shell, a crushed mud outlet is provided on the side of the crusher shell near the screening mechanism, and the bottom plate of the crusher shell is inclined toward the crushed mud outlet.

[0012] The screening mechanism comprises: a screening drum and a driving mechanism. The screening drum comprises a driven gear ring, a screening net and a retaining ring. The screening net is a hollow cylindrical drum-shaped structure. One end of the screening net is fixedly connected to the driven gear ring, and the other end of the screening net is fixedly connected to the retaining ring. The retaining ring is arranged near the crushing mechanism, and the lower end of the crushed mud outlet passes through the retaining ring and is arranged facing the interior of the screening drum. The power output end of the driving mechanism is matched with the driven gear ring through a driving gear.

[0013] The screening mechanism is a roller screening mechanism.

[0014] The chain rake conveying mechanism includes a transport guide plate, a sprocket, a chain and a plurality of scrapers, the two ends of the scraper are respectively fixed on two chains connected end to end, the chain is sleeved on two sprockets on the corresponding sides, the sprocket is matched with the chain transmission, and the two sprockets are arranged at the head and tail ends of the transport guide plate;

[0015] The transport guide plate is a guide structure with one end horizontally arranged and the other end inclined. The discharge end of the transport guide plate is arranged near the feed inlet of the mixing and stirring mechanism, and the end of the scraper plate contacts the transport guide plate.

[0016] Inside the mixing and stirring mechanism, there is a mixing and stirring device driven by planetary gears. Above the mixing and stirring mechanism, there is an additive storage tank, and at the bottom of the mixing and stirring mechanism, there is a discharging opening and closing device.

[0017] The cement feeding port is arranged above the conveying guide plate, and a spiral automatic feeding device is arranged inside the cement feeding port.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The fluidized backfill soil equipment with a screening function of the present invention integrates functions of soil collection, soil loosening, crushing, material transmission, stirring, and backfilling. It can complete the preparation and pouring backfill of fluidized soil. The whole set of equipment has a self-propelling function and can operate continuously. The present invention has a power system, a crushing system, and a screening system, and the structure is more compact. It can walk independently and complete screening, mixing, stirring, and discharging, with a high degree of integration. Therefore, this design integrates multiple functions, effectively improving the integration degree and automation level of the equipment.

[0020] 2. The crawler walking device in the fluidized backfill soil equipment with a screening function of the present invention enables the equipment to have the ability to walk in complex working conditions. At the same time, a hydraulic lifting cylinder is arranged between the housing and the crawler walking device, and when encountering a large obstacle, the housing can be lifted to cross the obstacle. This design enables the present invention to adapt to harsh working environments and expands the application range of the equipment. Therefore, this design has the ability to walk, a wide application range, and can be applied to harsh working conditions.

[0021] 3. The crushing mechanism in the fluidized backfill soil equipment with a screening function of the present invention uses a chain hammer rotating at high speed to crush soil blocks, effectively enhancing the soil-breaking ability of the machine. While improving the utilization rate of waste soil, the design of the chain hammer can effectively avoid the situation where the machine is stuck by stones or soil blocks that cannot be broken. Therefore, this design can not only improve the utilization rate of waste soil but also avoid the machine being stuck by stones.

[0022] 4. In the screening mechanism of the fluidized backfill soil equipment with a screening function of the present invention, small-sized crushed soil blocks are screened out into the chain rake conveying mechanism, and large-sized stones or soil blocks are discharged from the driven gear ring end of the drum. At the same time, a retaining ring is set to prevent large-sized stones or soil blocks from falling into the chain rake conveying mechanism; the scraper of the chain rake conveying mechanism transports the screened soil upward along the conveying guide plate to the mixing and stirring mechanism. While the chain rake conveying mechanism is running, cement is added to the chain rake conveying mechanism at a constant speed from the cement feeding port 8, and the added cement is transported away by the scraper; the entire screening and transportation process realizes a high degree of automation, and at the same time, the design of the scraper avoids the problem of soil block adhesion, effectively improving the transportation efficiency. Therefore, this design has a high degree of automation and effectively improves the screening and transportation efficiency.

[0023] 5. In the mixing and stirring mechanism of the fluidized backfill soil equipment with a screening function according to the present invention, while stirring, an additive storage tank is used to add additives into the mixing and stirring mechanism, so as to achieve efficient mixing and stirring. At the same time, a discharge opening and closing device is arranged at the bottom of the mixing and stirring mechanism. When the soil and additives in the mixer are stirred, the discharge opening and closing device is opened, and the fluidized soil is backfilled into the pipe network foundation pit through the discharge and pouring device below the mixer, thus completing the pouring and backfilling of the fluidized soil. Therefore, this design can achieve efficient stirring and backfilling, and effectively improve the mixing and backfilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the present invention.

[0025] Figure 2 It is a schematic internal structure diagram of the present invention.

[0026] Figure 3 is Figure 1 a schematic structural diagram of the screening mechanism in

[0027] Figure 4 is Figure 1 a schematic structural diagram of the crushing mechanism in

[0028] Figure 5 is Figure 1 a schematic structural diagram of the mixing and stirring mechanism in

[0029] Figure 6 is Figure 1 a schematic structural diagram of the crawler traveling device in

[0030] Figure 7 is Figure 6 a top view of

[0031] In the figure: housing 1, crushing mechanism 2, crusher housing 21, first rotating shaft 22, second rotating shaft 23, star turntable 24, chain 25, hammer 26, first driving motor 27, second driving motor 28, mud crushing outlet 29, screening mechanism 3, screening drum 31, driving mechanism 32, driven gear ring 33, screening mesh 34, retaining ring 35, driving gear 36, chain rake conveying mechanism 4, conveying guide plate 41, sprocket 42, chain 43, scraper 44, mixing and stirring mechanism 5, additive storage tank 51, feeding mechanism 6, rotating arm 61, hopper 62, rotating arm oil cylinder 63, crawler traveling device 7, cement feeding port 8. DETAILED DESCRIPTION OF THE INVENTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] See Figures 1 to 6, a fluidized backfill soil equipment with a screening function, the fluidized backfill soil equipment comprising: a housing 1 and a crushing mechanism 2, a screening mechanism 3, a chain harrow conveying mechanism 4 and a mixing and stirring mechanism 5 arranged in the housing 1. The chain harrow conveying mechanism 4 and the mixing and stirring mechanism 5 are fixed on the floor in the housing 1. The discharge end of the chain harrow conveying mechanism 4 is arranged above the feed inlet of the mixing and stirring mechanism 5. The screening mechanism 3 is arranged above the feed end of the chain harrow conveying mechanism 4. A cement feeding port 8 is arranged on the housing 1 at the side of the chain harrow conveying mechanism 4. The crushing mechanism 2 is arranged between the screening mechanism 3 and the mixing and stirring mechanism 5. The discharge port of the crushing mechanism 2 is arranged facing the inside of the screening mechanism 3. The feed inlet of the crushing mechanism 2 is arranged at the opening at the top of the housing 1.

[0034] Two groups of crawler traveling devices 7 are arranged on both sides of the bottom of the housing 1. The crawler traveling devices 7 are driven by a hydraulic motor or a diesel engine. The side of the crawler traveling device 7 is connected to the bottom of the housing 1 through a hydraulic lifting oil cylinder.

[0035] The feeding mechanism 6 includes a rotating arm 61 and a hopper 62. Both sides of the housing 1 are connected to the side of the hopper 62 through a rotating arm 61 respectively. The lower end of the rotating arm 61 is rotationally matched with the side of the housing 1. The upper end of the rotating arm 61 is rotationally matched with the hopper 62. The side of the housing 1 is connected to the middle of the rotating arm 61 through a rotating arm oil cylinder 63.

[0036] The crushing mechanism 2 includes a crusher housing 21, a first rotating shaft 22 and a second rotating shaft 23. Both the first rotating shaft 22 and the second rotating shaft 23 are rotationally matched with the crusher housing 21. The end of the first rotating shaft 22 passes through the crusher housing 21 and is in transmission cooperation with a first driving motor 27. The end of the second rotating shaft 23 passes through the crusher housing 21 and is in transmission cooperation with a second driving motor 28. The first rotating shaft 22 and the second rotating shaft 23 are arranged in parallel. The first rotating shaft 22 and the second rotating shaft 23 are sleeved with the same number of star-shaped turntables 24. The star-shaped turntables 24 on the first rotating shaft 22 and the star-shaped turntables 24 on the second rotating shaft 23 are arranged correspondingly. Each corner of the star-shaped turntable 24 is connected to a hammer 26 through a chain 25;

[0037] The top of the crusher housing 21 is provided with a feed inlet. A mud crushing outlet 29 is arranged on the side of the crusher housing 21 close to the screening mechanism 3. The bottom plate of the crusher housing 21 is inclined towards the mud crushing outlet 29.

[0038] The screening mechanism 3 includes: a screening drum 31 and a driving mechanism 32. The screening drum 31 includes a driven gear ring 33, a screening net 34 and a retaining ring 35. The screening net 34 is a hollow cylindrical drum-shaped structure. One end of the screening net 34 is fixedly connected to the driven gear ring 33, and the other end of the screening net 34 is fixedly connected to the retaining ring 35. The retaining ring 35 is arranged near the crushing mechanism 2, and the lower end of the crushed mud outlet 29 passes through the retaining ring 35 and is arranged facing the interior of the screening drum 31. The power output end of the driving mechanism 32 is transmission-coordinated with the driven gear ring 33 through a driving gear 36.

[0039] The screening mechanism 3 is a roller screening mechanism.

[0040] The chain rake conveying mechanism 4 includes a transport guide plate 41, a sprocket 42, a chain 43 and a plurality of scrapers 44, the two ends of the scraper 44 are respectively fixed on two chains 43 connected end to end, the chain 43 is sleeved on two sprockets 42 on the corresponding side thereof, the sprocket 42 and the chain 43 are transmission-coordinated, and the two sprockets 42 are arranged at the head and tail ends of the transport guide plate 41;

[0041] The transport guide plate 41 is a guide structure with one end horizontally arranged and the other end inclined. The discharge end of the transport guide plate 41 is arranged near the feed port of the mixing and stirring mechanism 5 , and the end of the scraper 44 is in contact with the transport guide plate 41 .

[0042] The mixing and stirring mechanism 5 is provided with a mixing and stirring device with planetary gear transmission inside, an additive storage box 51 is provided above the mixing and stirring mechanism 5 , and a discharge opening and closing device is provided at the bottom of the mixing and stirring mechanism 5 .

[0043] The cement feeding port 8 is arranged above the transport guide plate 41 , and a spiral automatic feeding device is arranged in the cement feeding port 8 .

[0044] The principle of the present invention is described as follows:

[0045] The screening diameter of the screening net 34 is 50 mm.

[0046] The shell structure of the present invention is designed to make the machine relatively closed, thereby preventing dust generated during the operation of the machine from polluting the air.

[0047] The crawler walking device 7 of the present invention can be a set of long crawlers on each side of the shell, or can be two sets of short crawlers on each side of the shell.

[0048] Embodiment 1:

[0049] A fluidized backfill soil equipment with a screening function, the fluidized backfill soil equipment comprising: a housing 1 and a crushing mechanism 2, a screening mechanism 3, a chain rake conveying mechanism 4 and a mixing and stirring mechanism 5 arranged in the housing 1. The chain rake conveying mechanism 4 and the mixing and stirring mechanism 5 are fixed on the floor inside the housing 1. The discharge end of the chain rake conveying mechanism 4 is arranged above the feed inlet of the mixing and stirring mechanism 5. The screening mechanism 3 is arranged above the feed end of the chain rake conveying mechanism 4. A cement feeding port 8 is arranged on the housing 1 at the side of the chain rake conveying mechanism 4. The crushing mechanism 2 is arranged between the screening mechanism 3 and the mixing and stirring mechanism 5. The discharge port of the crushing mechanism 2 faces the inside of the screening mechanism 3. The feed inlet of the crushing mechanism 2 is arranged at the opening at the top of the housing 1. The crushing mechanism 2 includes a crusher housing 21, a first rotating shaft 22 and a second rotating shaft 23. The first rotating shaft 22 and the second rotating shaft 23 are both rotationally matched with the crusher housing 21. The end of the first rotating shaft 22 passes through the crusher housing 21 and is in transmission cooperation with a first driving motor 27. The end of the second rotating shaft 23 passes through the crusher housing 21 and is in transmission cooperation with a second driving motor 28. The first rotating shaft 22 and the second rotating shaft 23 are arranged in parallel. The first rotating shaft 22 and the second rotating shaft 23 are sleeved with the same number of star-shaped turntables 24. The star-shaped turntables 24 on the first rotating shaft 22 are arranged corresponding to the star-shaped turntables 24 on the second rotating shaft 23. Each corner of the star-shaped turntable 24 is connected to a hammer 26 through a chain 25. The top of the crusher housing 21 is provided with a feed inlet. A mud crushing outlet 29 is arranged on the side of the crusher housing 21 near the screening mechanism 3. The bottom plate of the crusher housing 21 is inclined towards the mud crushing outlet 29. The screening mechanism 3 includes: a screening drum 31, a driving mechanism 32. The screening drum 31 includes a driven gear ring 33, a screening mesh 34 and a retaining ring 35. The screening mesh 34 is a hollow cylindrical drum-shaped structure. One end of the screening mesh 34 is fixedly connected to the driven gear ring 33. The other end of the screening mesh 34 is fixedly connected to the retaining ring 35. The retaining ring 35 is arranged near the crushing mechanism 2. The lower end of the mud crushing outlet 29 passes through the retaining ring 35 and faces the inside of the screening drum 31. The power output end of the driving mechanism 32 is in transmission cooperation with the driven gear ring 33 through a driving gear 36. The chain rake conveying mechanism 4 includes a conveying guide plate 41, sprockets 42, chains 43 and a plurality of scraping plates 44. The two ends of the scraping plate 44 are respectively fixed on two chains 43 connected end to end. The chains 43 are sleeved on two sprockets 42 on their corresponding sides. The sprockets 42 are in transmission cooperation with the chains 43. The two sprockets 42 are arranged at the head and tail ends of the conveying guide plate 41. The conveying guide plate 41 is a guiding structure with one end horizontally arranged and the other end inclined. The discharge end of the conveying guide plate 41 is arranged near the feed inlet of the mixing and stirring mechanism 5. The end of the scraping plate 44 is in contact with the conveying guide plate 41.Inside the mixing and stirring mechanism 5, there is a mixing and stirring device with planetary gear transmission. Above the mixing and stirring mechanism 5, there is an additive storage tank 51. At the bottom of the mixing and stirring mechanism 5, there is a discharging opening and closing device. The cement feeding port 8 is arranged above the conveying guide plate 41, and a spiral automatic feeding device is arranged inside the cement feeding port 8.

[0050] Embodiment 2:

[0051] Embodiment 2 is basically the same as Embodiment 1, and the difference lies in:

[0052] The screening mechanism 3 is a roller screen mechanism.

[0053] On both sides of the bottom of the housing 1, there are two sets of crawler traveling devices 7 each. The crawler traveling devices 7 are driven by hydraulic motors or diesel engines, and the side parts of the crawler traveling devices 7 are connected to the bottom of the housing 1 through hydraulic lifting cylinders.

[0054] Embodiment 3:

[0055] Embodiment 3 is basically the same as Embodiment 2, and the difference lies in:

[0056] The feeding mechanism 6 includes a swing arm 61 and a hopper 62. On both sides of the housing 1, each is connected to the side part of the hopper 62 through a swing arm 61. The lower end of the swing arm 61 is rotationally matched with the side part of the housing 1, the upper end of the swing arm 61 is rotationally matched with the hopper 62, and the side part of the housing 1 is connected to the middle part of the swing arm 61 through a swing arm oil cylinder 63.

Claims

1. A fluidized backfill soil equipment with screening function, Characterized in that: The fluidized backfill soil equipment includes: a housing (1), a crushing mechanism (2), a screening mechanism (3), a chain harrow conveying mechanism (4), a mixing and stirring mechanism (5), a feeding mechanism (6), and a crawler traveling device (7) arranged in the housing (1). The chain harrow conveying mechanism (4) and the mixing and stirring mechanism (5) are fixed on the floor inside the housing (1). The discharge end of the chain harrow conveying mechanism (4) is arranged above the feeding port of the mixing and stirring mechanism (5). The screening mechanism (3) is arranged above the feeding end of the chain harrow conveying mechanism (4). A cement feeding port (8) is arranged on the housing (1) on the side of the chain harrow conveying mechanism (4). The crushing mechanism (2) is arranged between the screening mechanism (3) and the mixing and stirring mechanism (5). The discharge port of the crushing mechanism (2) is arranged facing the inside of the screening mechanism (3). The feeding port of the crushing mechanism (2) is arranged at the opening at the top of the housing (1). A mud crushing outlet (29) is arranged on the side of the crusher housing (21) of the crushing mechanism (2) near the screening mechanism (3). The bottom plate of the crusher housing (21) is inclined towards the mud crushing outlet (29); The crushing mechanism (2) includes a crusher housing (21), a first rotating shaft (22), and a second rotating shaft (23). The first rotating shaft (22) and the second rotating shaft (23) are both rotationally matched with the crusher housing (21). The end of the first rotating shaft (22) passes through the crusher housing (21) and is in transmission cooperation with a first driving motor (27). The end of the second rotating shaft (23) passes through the crusher housing (21) and is in transmission cooperation with a second driving motor (28). The first rotating shaft (22) and the second rotating shaft (23) are arranged in parallel. The first rotating shaft (22) and the second rotating shaft (23) are sleeved with the same number of star-shaped turntables (24). The star-shaped turntables (24) on the first rotating shaft (22) are arranged corresponding to the star-shaped turntables (24) on the second rotating shaft (23). Each corner of the star-shaped turntable (24) is connected to a hammer (26) through a chain (25). A feeding port is opened at the top of the crusher housing (21). The installation height of the first rotating shaft (22) is lower than that of the second rotating shaft (23); The screening mechanism (3) includes: a screening drum (31), a driving mechanism (32). The screening drum (31) includes a driven gear ring (33), a screening mesh (34), and a retaining ring (35). The screening mesh (34) is a hollow cylindrical drum-shaped structure. One end of the screening mesh (34) is fixedly connected to the driven gear ring (33), and the other end of the screening mesh (34) is fixedly connected to the retaining ring (35). The retaining ring (35) is arranged near the crushing mechanism (2). The lower end of the mud crushing outlet (29) passes through the retaining ring (35) and is arranged facing the inside of the screening drum (31). The power output end of the driving mechanism (32) is in transmission cooperation with the driven gear ring (33) through a driving gear (36); The housing (1) is used to prevent the dust generated during the operation of the machine from polluting the air.

2. According to claim 1, a fluidized backfill soil equipment with screening function, Features: Two sets of crawler walking devices (7) are respectively arranged on both sides of the bottom of the housing (1); the crawler walking devices (7) are driven by a hydraulic motor or a diesel engine; and the sides of the crawler walking devices (7) are connected to the bottom of the housing (1) via a hydraulic lifting cylinder.

3. According to claim 2, a fluidized backfill soil equipment with screening function, Features: The feeding mechanism (6) comprises a rotating arm (61) and a hopper (62); both sides of the housing (1) are connected to the side of the hopper (62) via a rotating arm (61); the lower end of the rotating arm (61) is rotatably matched with the side of the housing (1); the upper end of the rotating arm (61) is rotatably matched with the hopper (62); and the side of the housing (1) is connected to the middle of the rotating arm (61) via a rotating arm cylinder (63).

4. A fluidized backfill soil equipment with screening function according to claim 1, 2 or 3, Features: The chain rake conveying mechanism (4) comprises a transport guide plate (41), a sprocket wheel (42), a chain (43) and a plurality of scrapers (44), the two ends of the scraper plate (44) are respectively fixed on two chains (43) connected end to end, the chain (43) is sleeved on two sprocket wheels (42) on the corresponding side thereof, the sprocket wheel (42) and the chain (43) are in transmission cooperation, and the two sprocket wheels (42) are arranged at the head and tail ends of the transport guide plate (41); The transport guide plate (41) is a guide structure with one end arranged horizontally and the other end arranged obliquely. The discharge end of the transport guide plate (41) is arranged close to the feed inlet of the mixing and stirring mechanism (5), and the end of the scraper (44) is in contact with the transport guide plate (41).

5. According to claim 4, a fluidized backfill soil equipment with screening function, Features: A planetary gear-driven mixing device is arranged inside the mixing and stirring mechanism (5), an additive storage box (51) is arranged above the mixing and stirring mechanism (5), and a discharge opening and closing device is arranged at the bottom of the mixing and stirring mechanism (5).

6. The fluidized backfill soil equipment with screening function according to claim 4, Features: The cement feeding port (8) is arranged above the transport guide plate (41), and a spiral automatic feeding device is arranged in the cement feeding port (8).

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