Continuous feeding, stirring and conveying concrete wet spraying machine

Abstract

The utility model relates to a kind of continuously feeding stirring and conveying concrete wet spraying machine, including mobile pump station, feeding conveyor and stirring and spraying assembly, and feeding conveyor and stirring and spraying assembly are arranged in parallel on mobile pump station, feeding conveyor is obliquely arranged, and feeding conveyor is conveyed concrete dry material to stirring and spraying assembly, and stirring and spraying assembly is vertically arranged;Stirring and spraying assembly includes stirring bin, stirring mechanism and screw pump, and there is inlet in the side wall of stirring bin, to facilitate water injection into stirring bin, stirring mechanism is arranged in stirring bin, stirring bin is communicated with feeding conveyor upward, and stirring bin is communicated with the screw pump controlled by stirring mechanism downward, outlet of screw pump is communicated with discharge elbow, discharge elbow is communicated with wind adding pipe containing compressed gas, to facilitate breaking up concrete wet material and pneumatic conveying thereof.The utility model is a kind of concrete wet spraying equipment with compact structure, high integration, continuous operation and environmental protection and high efficiency.

Description

Technical Field

[0001] This utility model relates to the field of concrete spraying equipment technology, and in particular to a continuous feeding, mixing and conveying concrete wet spraying machine. Background Technology

[0002] Shotcrete equipment refers to machinery that uses compressed air to suspend concrete in a specific mix and spray it onto the surface to form a dense concrete layer for support purposes. Traditional shotcrete equipment, especially in wet spraying processes, often suffers from problems such as limited functionality, large size, the need for multiple auxiliary devices, discontinuous operation, low efficiency, significant dust pollution, and high labor intensity for operators. For example, processes such as feeding, mixing, and spraying are often completed by different equipment or at different workstations, leading to process interruptions, large equipment footprint, and the need for numerous operators.

[0003] For example, the dry-wet dual-purpose concrete spraying machine with quantitative addition of accelerator disclosed in patent publication number CN204663548U has a separate set of equipment for the concrete mix conveying system, and a separate set of equipment for the spraying system of the concrete mix and the liquid accelerator supply system. This undoubtedly involves multiple pieces of equipment working together, and the equipment occupies a large area. In addition, some equipment has poor mixing effect, which easily causes segregation, or the conveying is discontinuous, affecting the spraying quality and construction efficiency. Summary of the Invention

[0004] To address the issues of large footprint and dispersed processes in conventional concrete spraying equipment, this invention provides a continuous feeding, mixing, and conveying wet concrete spraying machine. It features a compact overall structure and integrates chain feeding, vertical mixing, and screw continuous conveying functions, enabling continuous and automated spraying operations.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A continuous feeding, mixing and conveying concrete wet spraying machine includes a mobile pump station, a feeding conveyor and a mixing and spraying assembly. The feeding conveyor and the mixing and spraying assembly are arranged side by side on the mobile pump station. The feeding conveyor is arranged at an incline and conveys dry concrete material upward into the mixing and spraying assembly. The mixing and spraying assembly is arranged vertically. The mixing and spraying assembly includes a mixing chamber, a mixing mechanism, and a screw pump. The mixing chamber has a water inlet on its side wall for easy water injection. The mixing mechanism is installed inside the mixing chamber. The mixing chamber is connected to a feeding conveyor at the top and to the screw pump controlled by the mixing mechanism at the bottom for easy pumping of the mixed wet concrete. The outlet of the screw pump is connected to a discharge bend, which is connected to an air supply pipe containing compressed gas for easy dispersing of the wet concrete and pneumatic conveying.

[0006] Furthermore, the mobile pump station includes a self-propelled chassis and a hydraulic pump station. The hydraulic pump station is installed on one side of the self-propelled chassis, the feeding conveyor is installed at an angle on the other side of the self-propelled chassis, and the mixing and spraying assembly is installed in the middle of the self-propelled chassis.

[0007] Furthermore, the mobile pump station has two sets of columns spaced apart on its self-propelled chassis. The mobile pump station supports the feeding conveyor through the two sets of columns, which facilitates stable support for the feeding conveyor. The mixing and spraying assembly has uprights on both sides to support the mixing and spraying assembly. The uprights are fixedly connected downwards to the self-propelled chassis.

[0008] Furthermore, the feeding conveyor includes a feeding frame, a drive wheel, a driven wheel, a feeding motor, a chain, and a scraper. The feeding frame is arranged at an incline, with one end of the feeding frame pointing downwards towards the mobile pump station and the other end pointing upwards to connect with the mixing chamber. The drive wheel and the driven wheel are rotatably mounted at both ends of the feeding frame, and the feeding motor for driving the drive wheel is also provided at one end of the feeding frame. The chain is sleeved between the driving wheel and the driven wheel, and several scrapers are spaced apart on the chain; a hopper is provided above the lower end of the feeding frame to facilitate centralized feeding into the feeding frame, and a screen plate is provided inside the hopper.

[0009] Furthermore, a feed inlet is provided on one side of the mixing chamber, and the feeding conveyor is connected to the mixing chamber through the feed inlet. The water inlets are provided on both sides of the mixing chamber, and the water inlets are arranged at an angle and tangent to the mixing chamber. A cone hopper is provided at the bottom of the mixing chamber, and a cover plate is provided at the top of the mixing chamber. A mixing mechanism is provided on the cover plate, and the mixing mechanism includes a mixing motor, a mixing shaft, mixing blades, and a mixing rod.

[0010] Furthermore, the stirring motor is located above the cover plate, and the stirring shaft is located inside the stirring chamber. The stirring shaft is connected upward to the output shaft of the stirring motor. The stirring blades are arranged in a spiral shape below the feed inlet. Stirring rods are symmetrically arranged on both sides of the stirring shaft below the stirring blades. The lower ends of the stirring rods are bent and extend into the conical hopper.

[0011] Furthermore, the screw pump includes a stator and a rotor. The stator is located below the cone hopper, and the rotor is connected inside the stator. The top of the rotor extends upward into the cone hopper. The lower ends of the two stirring rods are connected to the top of the rotor to drive the rotor to rotate inside the stator. The stator is connected downward to the discharge bend, and the discharge bend is connected to the air supply pipe to form a three-way structure.

[0012] The beneficial effects of this utility model through the above technical solution are: This utility model has a reasonable structural design, integrating a hydraulic pump station, a feeding conveyor, and a mixing and spraying assembly on a self-propelled chassis. The whole machine has a compact structure, which effectively reduces the overall size and makes it easy to move, thus improving site adaptability.

[0013] This utility model integrates chain feeding, vertical spiral mixing, and screw continuous conveying functions into one unit. It achieves continuous feeding, continuous mixing, and continuous spraying of dry-mixed concrete materials, highly integrating multiple functions into a single device. This increases equipment functionality, eliminates interruptions between processes, and significantly improves work efficiency. The mixing and spraying assembly integrates vertical spiral mixing and screw pumping, effectively preventing material segregation and achieving continuous, uniform mixing and pumping of the material.

[0014] This invention's high degree of functional integration reduces reliance on additional auxiliary equipment, such as separate feeders and mixers, thereby lowering equipment investment and relocation difficulties. It also reduces the number of on-site workers and alleviates their labor intensity. The use of wet spraying technology ensures thorough mixing with water during the mixing stage, significantly suppressing dust emissions at the work site, improving the working environment, and meeting environmental protection requirements. Attached Figure Description

[0015] Figure 1 This is a front view of a continuous feeding, mixing and conveying wet concrete spraying machine according to this utility model.

[0016] Figure 2 This is a top view of a continuous feeding, mixing and conveying wet concrete spraying machine according to this utility model.

[0017] Figure 3 This is a schematic diagram of the chain structure of a continuous feeding, mixing and conveying wet concrete spraying machine according to the present invention.

[0018] Figure 4 This is a top view of the feeding conveyor of a continuous feeding, mixing and conveying wet concrete spraying machine according to this utility model.

[0019] Figure 5 This is a front view of the feeding conveyor of a continuous feeding, mixing and conveying wet concrete spraying machine according to this utility model.

[0020] Figure 6 This is a front view of the mixing and spraying assembly of a continuous feeding, mixing and conveying concrete wet spraying machine according to this utility model.

[0021] Figure 7 This is a cross-sectional view of the mixing and spraying assembly of a continuous feeding, mixing and conveying concrete wet spraying machine according to this utility model.

[0022] The attached diagram is labeled as follows: 1 Self-propelled chassis, 2 Hydraulic pump station, 3 Feeding conveyor, 4 Mixing and spraying assembly, 5 Column, 6 Feeding frame, 7 Drive wheel, 8 Driven wheel, 9 Feeding motor, 10 Chain, 101 Chain link, 102 U-shaped chain link hook, 103 Chain plate, 11 Scraper, 121 Wheel seat, 122 Wheel body, 13 Long slot, 14 Tensioning rod, 15 Tooth, 151 Notch, 16 Hopper, 17 Screen plate, 18 Upright, 19 Mixing bin, 20 Mixing mechanism, 21 Mixing motor, 22 Mixing shaft, 221 Vertical section, 222 Horizontal section, 23 Mixing blade, 24 Mixing rod, 25 Screw pump, 251 Stator, 252 Rotor, 26 Feed inlet, 27 Conical bucket, 28 Cover plate, 29 Straight rod, 30 Conical pipe, 31 Air inlet pipe, 32 Water inlet, 33 Flexible hose pump, 34 Discharge bend. Detailed Implementation

[0023] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings: like Figures 1-7 As shown, a continuous feeding, mixing, and conveying concrete wet spraying machine includes a mobile pump station, a feeding conveyor 3, and a mixing and spraying assembly 4. The mobile pump station includes a self-propelled chassis 1 and a hydraulic pump station 2. The self-propelled chassis 1 consists of a chassis body and a walking device. The hydraulic pump station 2 is located on one side above the self-propelled chassis 1. The hydraulic pump station 2 is existing technology, and its power supply is provided by an external cable. The hydraulic pump station 2 provides driving force for the operation of the self-propelled chassis 1.

[0024] The mobile pump station is equipped with a feeding conveyor 3 and a mixing and spraying assembly 4 arranged in parallel. That is, the feeding conveyor 3 is inclined on the other side of the self-propelled chassis 1, and the mixing and spraying assembly 4 is arranged in the middle of the self-propelled chassis 1. The hydraulic pump station 2, the mixing and spraying assembly 4 and the feeding conveyor 3 are arranged in parallel above the self-propelled chassis 1.

[0025] The feeding conveyor 3 is arranged at an angle. During installation, two sets of columns 5 are set at intervals on the self-propelled chassis 1 of the mobile pump station. The two sets of columns 5 are at different heights. The mobile pump station supports the feeding conveyor 3 through the two sets of columns 5, which can reliably support the feeding conveyor 3 and ensure the inclined state of the feeding conveyor 3.

[0026] In this embodiment, the feeding conveyor 3 includes a feeding frame 6, a drive wheel 7, a driven wheel 8, a feeding motor 9, a chain 10, and a scraper 11. The feeding frame 6 is arranged at an inclination angle of 45° to 49°, and its cross-section is U-shaped. Both sides of the feeding frame 6 are channel steel structures. One end of the feeding frame 6 is downward close to the mobile pump station, and the other end is upward close to the mixing and spraying assembly 4. The upper and lower parts of the feeding frame 6 are simultaneously supported by the column 5 to ensure the stability and reliability of the feeding frame 6. Moreover, the upper end of the feeding frame 6 is bolted to the mixing and spraying assembly 4.

[0027] The feeding frame 6 has a driving wheel 7 and a driven wheel 8 rotatably mounted at both ends. The driving wheel 7 is located at the lower end of the feeding frame 6, and the driven wheel 8 is located at the upper end of the feeding frame 6. The driving wheel 7 and the driven wheel 8 have the same structure, both including a wheel seat 121 and a wheel body 122 that is rotated on the wheel seat 121. The wheel seat 121 is bolted to the lower part of the feeding frame 6, and the wheel body 122 is located inside the feeding frame 6. One end of the wheel body 122 passes through the bottom surface of the feeding frame 6 and is connected to the wheel seat 121.

[0028] The driven wheel 8 is fixed in position, while the driving wheel 7 is adjustable, allowing for adjustment of the distance between them. Specifically, elongated holes 13 are provided on both sides of the lower end of the feeding frame 6, with two holes 13 on each side. When the wheel seat 121 is bolted to the feeding frame 6, the bolt passes through the elongated hole 13, allowing the wheel seat 121 of the driving wheel 7 to move within the range of the elongated hole 13. Tightening the bolts ensures the fixed position of the driving wheel 7. Simultaneously, tensioning rods 14 are threaded onto both sides of the feeding frame 6. Tightening the tensioning rods 14 causes one end to press against the wheel seat 121 of the driving wheel 7, restricting the driving wheel 7 and preventing it from moving away from the driven wheel 8 and thus preventing it from shifting and approaching the driven wheel 8.

[0029] One end of the feeding frame 6 is also equipped with a feeding motor 9 for driving the drive wheel 7. The feeding motor 9 is mounted on the wheel seat 121 of the drive wheel 7, and the output shaft of the feeding motor 9 passes through the wheel seat 121 and is connected to the wheel body 122. After the feeding motor 9 is connected to the hydraulic pump station 2, it can provide power for the operation of the feeding motor 9, and the feeding motor 9 can drive the drive wheel 7 to rotate.

[0030] A chain 10 is fitted between the drive wheel 7 and the driven wheel 8. Driven by the feeding motor 9, the chain 10 rotates continuously. Since the position of the drive wheel 7 is adjustable and restricted by the tension rod 14, the tension of the chain 10 can be adjusted to ensure a stable and reliable feeding process. Several scrapers 11 are spaced apart on the chain 10. The entire chain 10 consists of several chain links 101, connected by U-shaped chain link hooks 102. A chain plate 103 is provided at the open end of the U-shaped chain link hook 102, and scrapers 11 with a "𠃍" shaped cross-section are provided on the chain plate 103. The continuously rotating chain 10 drives the scrapers 11 to run together. There is a gap between the scrapers 11 and the bottom surface of the feeding frame 6, ≤2mm.

[0031] Because of the special structure of the chain 10, in order to ensure that the driving wheel 7 and the driven wheel 8 can reliably drive the chain 10, two layers of teeth 15 are provided on the outer circumference of the wheel body 122. Each layer has multiple teeth 15 evenly distributed in a circumferential direction, and each tooth 15 has a trapezoidal cross-section. There is a gap between the upper and lower layers of teeth 15 to accommodate the U-shaped chain link hook 102. Notches 151 are opened at the corners of corresponding teeth 15 in the upper and lower layers, and a chain link 101 can be accommodated between the notches 151 of four adjacent teeth 15 in the upper and lower layers. In this way, the driving wheel 7 and the driven wheel 8 can stably drive the chain 10.

[0032] To facilitate material feeding into the feeding conveyor 3, a hopper 16 is installed above the lower end of the feeding frame 6. The hopper 16 is conical, open at both the top and bottom, and wider at the top than at the bottom. The lower end of the hopper 16 corresponds to the drive wheel 7. A screen plate 17 is installed inside the hopper 16. Dry concrete material is manually poured directly onto the screen plate 17, which then falls directly into the feeding frame 6. The screen plate 17 also serves a screening function. After the feeding motor 9 is started, the continuously rotating scraper 11 transports the material from the bottom of the feeding frame 6 to the top.

[0033] The feeding conveyor 3 conveys dry concrete material upwards into the mixing and spraying assembly 4, which is arranged vertically. During installation, the mixing and spraying assembly 4 is equipped with uprights 18 on both sides. The uprights 18 support the mixing and spraying assembly 4 and are fixedly connected downwards to the self-propelled chassis 1 to ensure stable installation of the mixing and spraying assembly 4.

[0034] In this embodiment, the mixing and spraying assembly 4 includes a mixing chamber 19, a mixing mechanism 20, and a screw pump 25. The mixing chamber 19 is connected upward to the feeding conveyor 3. Specifically, the other end of the feeding frame 6 is connected upward to the mixing chamber 19. For this purpose, a feed inlet 26 is provided on one side of the mixing chamber 19. The feeding conveyor 3 is connected to the mixing chamber 19 through the feed inlet 26 and can transport dry concrete material into the mixing chamber 19.

[0035] The mixing chamber 19 is a cylindrical body with openings at the top and bottom. A conical hopper 27 is provided at the bottom of the mixing chamber 19, and the cross-section of the conical hopper 27 decreases from top to bottom. A cover plate 28 is provided at the top of the mixing chamber 19, which can close the top of the mixing chamber 19. A mixing mechanism 20 is provided inside the mixing chamber 19, that is, a mixing mechanism 20 is provided on the cover plate 28. The mixing mechanism 20 includes a mixing motor 21, a mixing shaft 22, mixing blades 23, and a mixing rod 24.

[0036] A stirring motor 21 is mounted above the cover plate 28. After being connected to the hydraulic pump station 2, the stirring motor 21 can be driven to operate. A stirring shaft 22 is installed inside the stirring chamber 19. The stirring shaft 22 has a cross-section in the shape of "T". The stirring shaft 22 includes a vertical section 221 and a horizontal section 222. The stirring shaft 22 is connected upward to the output shaft of the stirring motor 21, so that the stirring motor 21 can drive the stirring shaft 22 to rotate. Stirring blades 23 are installed on the stirring shaft 22. The stirring blades 23 are spiral-shaped and arranged below the feed inlet 26. The stirring blades 23 are close to the inner wall of the stirring chamber 19 and away from the vertical section 221 of the stirring shaft 22.

[0037] Stirring rods 24 are symmetrically arranged on both sides of the stirring shaft 22 below the stirring blades 23. That is, stirring rods 24 are arranged at both ends of the horizontal section 222 of the stirring shaft 22. The tops of the two stirring rods 24 protrude upwards from the upper plane of the horizontal section 222, but the protrusion heights are different. The stirring blades 23 are arranged between the protruding ends of the two stirring rods 24. That is, the protruding parts of the two stirring rods 24 are used to support the stirring blades 23. The stirring blades 23 are not connected to the vertical section 221.

[0038] The stirring rod 24 extends vertically downwards, and its lower end is bent and extends into the conical hopper 27. The angle of inclination of the bent part is consistent with the taper of the conical hopper 27. The stirring chamber 19 is connected downwards to the screw pump 25 controlled by the stirring mechanism 20. The screw pump 25 includes a stator 251 and a rotor 252. The structures of the stator 251 and the rotor 252 are existing technologies.

[0039] The stator 251 is positioned below the conical hopper 27 and connected upwards to it. A rotor 252 is mounted inside the stator 251, with its top extending upwards into the conical hopper 27. The lower ends of two stirring rods 24 are connected to the top of the rotor 252 to drive its rotation within the stator 251. Specifically, a horizontally arranged straight rod 29 is positioned at the top of the rotor 252. The cross-section of the straight rod 29 and the rotor 252 is approximately "T"-shaped, and both ends of the straight rod 29 are fixedly connected to the two stirring rods 24. Therefore, when the stirring shaft 22 rotates, it drives the stirring blades 23 to rotate, while the two stirring rods 24 revolve around the stirring shaft 22, causing the rotor 252 to rotate within the stator 251.

[0040] The screw pump 25 outlet is connected to a discharge bend 34, meaning the stator 251 is connected downwards to the discharge bend 34, which is bent into an "L" shape. The upper end of the discharge bend 34 is a tapered pipe 30, which connects to the stator 251. The uniformly mixed wet concrete in the mixing chamber 19 is continuously and stably pumped into the tapered pipe 30 by the cooperation of the stator 251 and the rotor 252, and then flows into the discharge bend 34.

[0041] The discharge bend 34 connects to the air supply pipe 31 containing compressed gas, forming a T-junction. Compressed gas is introduced into the air supply pipe 31, guiding the airflow into the discharge bend 34. The discharge bend 34 is subsequently connected to a spray gun, using pneumatic conveying to deliver wet concrete to the spray gun. The pneumatic force disperses the wet concrete, which is then transported through the discharge bend 34 to the front-end spray gun for shotcreting.

[0042] The mixing chamber 19 has water inlets 32 connected to its side walls. Specifically, water inlets 32 are installed on both sides of the mixing chamber 19, with two inlets 32 arranged vertically on each side. The water inlets 32 are inclined and tangent to the mixing chamber 19. Water can be evenly delivered into the mixing chamber 19 through the four water inlets 32 to ensure the water demand of the dry-mixed concrete. A metering pump is installed on the self-propelled chassis 1. The inlet of the metering pump is connected to the water source, and the outlet of the metering pump is divided into four branches, each connected to one of the four water inlets 32. The metering pump can achieve quantitative water addition. A flow meter can also be installed on the pipeline between the metering pump and the water source. A pressure reducing valve is installed on each branch pipeline between the metering pump and the water inlets 32.

[0043] It should be noted that a hose pump 33 is installed on the self-propelled chassis 1, and the hydraulic pump station 2 provides power to the hose pump 33. The hose pump 33 is used to pump the accelerator to the spray gun, and the flocculant and wet concrete are mixed in the spray gun before being sprayed out. The container for holding the accelerator is separately arranged and not integrated into the self-propelled chassis 1.

[0044] The principle of this invention is as follows: Dry concrete material is manually fed into the hopper 16. After the feeding conveyor 3 is started, the continuously circulating scraper 11 continuously lifts the dry concrete material from the hopper 16 into the mixing chamber 19 of the mixing and spraying assembly 4. At the same time, water is added to the mixing chamber 19 according to a set ratio via a metering pump. After the mixing mechanism 20 is started, the mixing blades 23 and two mixing rods 24 can forcibly mix the dry concrete material falling from the top with the metered water injected from the side of the mixing chamber 19. After being mixed evenly, the wet concrete material is continuously and stably pumped out by the screw pump 25 below into the discharge bend 34, and then conveyed to the spray gun for spraying under pneumatic conveying.

[0045] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A continuous feeding, mixing, and conveying concrete wet spraying machine, characterized in that, It includes a mobile pumping station, a feeding conveyor (3) and a mixing and spraying assembly (4). The feeding conveyor (3) and the mixing and spraying assembly (4) are arranged side by side on the mobile pumping station. The feeding conveyor (3) is arranged at an angle and conveys dry concrete material upward to the mixing and spraying assembly (4). The mixing and spraying assembly (4) is arranged vertically. The mixing and spraying assembly (4) includes a mixing chamber (19), a mixing mechanism (20), and a screw pump (25). The mixing chamber (19) has a water inlet (32) connected to its side wall. The mixing mechanism (20) is installed inside the mixing chamber (19). The mixing chamber (19) is connected to the feeding conveyor (3) at the top. The mixing chamber (19) is connected to the screw pump (25) controlled by the mixing mechanism (20) at the bottom. The outlet of the screw pump (25) is connected to a discharge bend (34). The discharge bend (34) is connected to an air supply pipe (31) containing compressed gas.

2. The continuous feeding, mixing, and conveying wet concrete spraying machine according to claim 1, characterized in that, The mobile pump station includes a self-propelled chassis (1) and a hydraulic pump station (2). The hydraulic pump station (2) is set on one side of the self-propelled chassis (1), and the feeding conveyor (3) is set at an angle on the other side of the self-propelled chassis (1). The mixing and spraying assembly (4) is set in the middle of the self-propelled chassis (1).

3. A continuous feeding, mixing, and conveying wet shotcrete machine according to claim 2, characterized in that, The mobile pump station has two sets of columns (5) spaced apart on its self-propelled chassis (1). The mobile pump station carries the feeding conveyor (3) through the two sets of columns (5). The mixing and spraying assembly (4) has uprights (18) on both sides to support it. The uprights (18) are fixedly connected downward to the self-propelled chassis (1).

4. A continuous feeding, mixing, and conveying wet shotcrete machine according to claim 1, characterized in that, The feeding conveyor (3) includes a feeding frame (6), a drive wheel (7), a driven wheel (8), a feeding motor (9), a chain (10), and a scraper (11). The feeding frame (6) is arranged at an angle, with one end of the feeding frame (6) facing downwards close to the mobile pump station and the other end facing upwards and connected to the mixing chamber (19). The drive wheel (7) and the driven wheel (8) are rotatably arranged at both ends of the feeding frame (6). The feeding motor (9) for driving the drive wheel (7) is also provided at one end of the feeding frame (6). The chain (10) is sleeved between the driving wheel (7) and the driven wheel (8), and a number of scrapers (11) are spaced apart on the chain (10); a hopper (16) is provided above the lower end of the feeding frame (6), and a screen plate (17) is provided inside the hopper (16).

5. A continuous feeding, mixing, and conveying wet shotcrete machine according to claim 1, characterized in that, The mixing chamber (19) has a feed inlet (26) on one side. The feeding conveyor (3) is connected to the mixing chamber (19) through the feed inlet (26). The water inlets (32) are provided on both sides of the mixing chamber (19). The water inlets (32) are arranged at an angle and are tangent to the mixing chamber (19). The bottom of the mixing chamber (19) is provided with a cone hopper (27). The top of the mixing chamber (19) is provided with a cover plate (28). The cover plate (28) is provided with a stirring mechanism (20). The stirring mechanism (20) includes a stirring motor (21), a stirring shaft (22), stirring blades (23), and a stirring rod (24).

6. A continuous feeding, mixing, and conveying wet shotcrete machine according to claim 5, characterized in that, The stirring motor (21) is located above the cover plate (28), and the stirring shaft (22) is located inside the stirring chamber (19). The stirring shaft (22) is connected upward to the output shaft of the stirring motor (21). The stirring blades (23) are located on the stirring shaft (22). The stirring blades (23) are spirally arranged below the feed inlet (26). The stirring rods (24) are symmetrically arranged on both sides of the stirring shaft (22) below the stirring blades (23). The lower end of the stirring rods (24) is bent and extends into the cone hopper (27).

7. A continuous feeding, mixing, and conveying wet concrete spraying machine according to claim 6, characterized in that, The screw pump (25) includes a stator (251) and a rotor (252). The stator (251) is located below the cone hopper (27). The rotor (252) is connected inside the stator (251). The top of the rotor (252) extends upward into the cone hopper (27). The lower ends of the two stirring rods (24) are connected to the top of the rotor (252) to drive the rotor (252) to rotate inside the stator (251). The stator (251) is connected downward to the discharge bend (34). The discharge bend (34) is connected to the air supply pipe (31) to form a three-way structure.

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