A shotcrete machine with gas mixed discharge

Abstract

A spraying machine with gas mixing and discharging. It mainly solves the problem of easy material accumulation and uneven material discharging in the spraying machines currently on the market. It is characterized in that: a discharging pipe (3) connected to the discharging chamber is provided on the shell, a rotating cover (4) connected to a first power source and rotatable along its own axis is provided in the discharging chamber, an air cavity (41) connected to the air source is provided in the rotating cover, a plurality of blowing holes (42) are provided on the circumferential outer wall of the rotating cover, and the airflow discharged from the blowing holes forms an annular air passage (43) on the outer wall of the rotating cover and the inner wall of the shell, and the air passage is connected to the discharging pipe. The present invention provides a spraying machine with gas mixing and discharging, wherein an air cavity connected to the air source is provided in the rotating cover, an air passage is formed between the outside of the rotating cover and the inner wall of the shell, and the concrete material in the flow passage is blown by high-pressure gas to generate a vortex airflow, so as to achieve a gas-material mixing state, and then the material is evenly discharged to the discharging pipe on the side of the shell, so as to achieve a better use effect.

Description

Technical Field

[0001] The invention belongs to the field of spraying machines, and in particular relates to a spraying machine with gas mixed discharging. Background Art

[0002] Shotcrete machines are mainly used for shotcrete grouting operations in high-speed rail, highway and subway tunnels, culverts, hydropower projects, civil air defense projects, mine shafts and other concrete projects.

[0003] The Chinese patent with the publication number "CN108374419A" discloses a spraying machine, in which materials are easily accumulated at the bottom of the barrel, especially the materials after adding the accelerating agent are quickly solidified, and it is very difficult to clean the machine after each shift. In addition, the vortex airflow in the barrel causes the materials to rotate in the barrel and then be discharged from the material pipe, resulting in uneven output of materials, severe vibration and cracking of the spray gun nozzle, and difficulty for the operator to control the spray gun nozzle. There is sometimes a backlash and a sudden impact. The uneven density of the materials in the feeding hose is also very easy to block the hose, and the performance is not perfect. Summary of the invention

[0004] In order to overcome the shortcomings of the background technology, the present invention provides a spraying machine with gas mixing and discharging, which mainly solves the problems of easy material accumulation and uneven material discharging of the spraying machines currently on the market.

[0005] The technical solution adopted by the present invention is:

[0006] A gas mixing discharging spraying machine comprises a shell, a discharging cavity is arranged in the shell, a discharging pipe connected to the discharging cavity is arranged on the shell, a rotating cover connected to a first power source and rotatable along its own axis is arranged in the discharging cavity, an air cavity connected to an air source is arranged in the rotating cover, a plurality of blowing holes are arranged on the circumferential outer wall of the rotating cover, the airflow discharged from the blowing holes forms an annular air passage on the outer wall of the rotating cover and the inner wall of the shell, and the air passage is connected to the discharging pipe.

[0007] An air inlet pipe communicating with the air cavity is provided at the bottom of the shell.

[0008] The first power source is a reduction motor, the reduction motor comprises a motor shaft, the rotating cover comprises a cover body, and the cover body is linked to the motor shaft.

[0009] The rotating cover also includes a base matched with the inner wall of the bottom of the shell.

[0010] The base is a nylon sealing ring.

[0011] The inner wall of the shell is provided with a boss, and an air passage connected to the air inlet pipe is provided in the boss. The circumferential inner wall of the base is provided with an inlet hole connected to the air passage, and the circumferential outer wall of the base is provided with the blowing hole connected to the inlet hole.

[0012] A gap is arranged between the base and the inner wall of the bottom of the shell, and an air injection hole communicating with the inlet hole is arranged at the bottom of the base, and the air injection hole is communicated with the gap.

[0013] The shell is provided with a first blanking port, and a bracket is provided in the shell relative to the first blanking port. The bracket is provided with a second power source and a first valve core driven by the second power source, and the first valve core is used to rise / fall to close / open the first blanking port.

[0014] The second power source is a bidirectional cylinder, which includes a first driving rod and a second driving rod. The first driving rod is connected to the first valve core, and the second driving rod is connected to the second valve core. It also includes a second blanking port corresponding to the second valve core, and the second blanking port is arranged below the first blanking port.

[0015] A conical limiting hopper is provided in the discharge cavity corresponding to the second material discharge port, the limiting hopper is provided above the rotating cover, the limiting hopper includes a limiting opening, the limiting opening is coaxially provided with the rotating cover and the diameter of the limiting opening is smaller than the diameter of the rotating cover.

[0016] The rotating cover is a conical or truncated cone structure.

[0017] The beneficial effects of the present invention are as follows: the present invention provides a spraying machine with gas mixing and discharging, wherein an air cavity connected to an air source is provided in a rotating cover, an air passage is formed between the outside of the rotating cover and the inner wall of the shell, and the concrete material in the flow passage is blown by high-pressure gas to generate a vortex airflow, achieving a gas-material mixing state, and then the material is evenly discharged to a discharge pipe on the side of the shell, achieving a better use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present invention.

[0019] Figure 2 It is a partial cross-sectional schematic diagram of an embodiment of the present invention.

[0020] Figure 3 It is a partial three-dimensional schematic diagram of an embodiment of the present invention.

[0021] Figure 4 It is a partial cross-sectional schematic diagram of an embodiment of the present invention.

[0022] Figure 5 It is a partial cross-sectional schematic diagram of another embodiment of the present invention.

[0023] Figure 6 for Figure 5 A magnified schematic diagram of center A.

[0024] Figure 7It is a partial cross-sectional schematic diagram of another embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings: As shown in the figure, a gas-mixed spraying machine comprises a shell 1, a discharge chamber 2 is provided in the shell, a discharge pipe 3 connected to the discharge chamber is provided on the shell, a rotating cover 4 connected to the first power source and rotatable along its own axis is provided in the discharge chamber, an air chamber 41 connected to the air source is provided in the rotating cover, a plurality of blowing holes 42 are provided on the circumferential outer wall of the rotating cover, and the airflow discharged from the blowing holes forms an annular air passage 43 on the outer wall of the rotating cover and the inner wall of the shell, and the air passage is connected to the discharge pipe. The air source can be an air pump. The present invention provides a gas-mixed spraying machine, wherein an air chamber connected to the air source is provided in the rotating cover, an air passage is formed between the outer side of the rotating cover and the inner wall of the shell, and the concrete material in the flow passage is blown by high-pressure gas to generate a vortex airflow, so that it reaches a gas-material mixing state, and then evenly discharges the material to the discharge pipe on the side of the shell, which has a better use effect.

[0026] In this embodiment, as shown in the figure, an air inlet pipe 44 communicating with the air cavity is provided at the bottom of the housing. The bottom air inlet has a compact structure.

[0027] In this embodiment, as shown in the figure, the first power source is a reduction motor 6, the reduction motor includes a motor shaft 61, and the rotating cover includes a cover body 401, the cover body is linked to the motor shaft and can be connected to the motor shaft by screws.

[0028] In this embodiment, as shown in the figure, the rotating cover further includes a base 402 matched with the inner wall of the bottom of the shell.

[0029] In this embodiment, as shown in the figure, the base is a nylon sealing ring, which is durable and not easy to be damaged.

[0030] In this embodiment, as shown in the figure, the rotating cover includes a base, a boss 101 is provided on the inner wall of the shell, an air passage 102 connected to the air inlet pipe is provided in the boss, an inlet hole 404 connected to the air passage is provided on the circumferential inner wall of the base, and the blowing hole connected to the inlet hole is provided on the circumferential outer wall of the base. Preferably, sealing rings 107 are provided above and below the inlet hole to prevent air leakage, which has a better use effect.

[0031] In this embodiment, as shown in the figure, a gap 105 is provided between the base and the inner wall of the bottom of the shell, and an air jet hole 106 connected to the inlet hole is provided at the bottom of the base, and the air jet hole is connected to the gap. The existence of the gap reduces friction during rotation, and sand and stones are blown out by air flow to reduce wear and prevent jamming.

[0032] In this embodiment, as shown in the figure, the housing is provided with a first blanking port 13, a bracket 14 is provided in the housing relative to the first blanking port, the bracket is provided with a second power source 141 and a first valve core 142 driven by the second power source, and the first valve core is used to rise / fall to close / open the first blanking port. The bracket can be a tripod disposed in the upper limit ring 140, the second power source can be connected to the bracket by screws, and the first valve core is disposed above the second power source and covers the second power source to reduce the contact between the material and the second power source.

[0033] In this embodiment, as shown in the figure, the second power source is a two-way cylinder, and the two-way cylinder includes a first drive rod 1411 and a second drive rod 1412, the first drive rod is connected to the first valve core, and the second drive rod is connected to the second valve core 143, and also includes a second blanking port 15 corresponding to the second valve core, and the second blanking port is arranged below the first blanking port. Two cylinders can be used here, and a two-way cylinder can also be used. Specifically, the Chinese patent application with application number "201910886048X" can be used. Preferably, a partition 92 is provided in the shell, and the second valve core is sealed with the partition, and specifically, a sealing ring 91 can be provided to seal with the second valve core.

[0034] In this embodiment, as shown in the figure, a conical limiting hopper 16 is provided in the discharge chamber corresponding to the second discharge port, and the limiting hopper is arranged above the rotating cover. The limiting hopper includes a limiting port 161, and the limiting port is coaxially arranged with the rotating cover and the diameter of the limiting port is smaller than the diameter of the rotating cover.

[0035] In this embodiment, as shown in the figure, the rotating cover is a conical or frustum-shaped structure, which is convenient for material discharge and allows the material to fall into the flow channel.

[0036] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention. The embodiments should not be regarded as limiting the present invention, but any improvements made based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. A gas-mixing spraying machine, comprising a housing (1), wherein a discharge chamber (2) is provided in the housing, and wherein: The shell is provided with a discharge pipe (3) in communication with the discharge chamber, the discharge chamber is provided with a rotating cover (4) connected to the first power source and rotatable along its own axis, the rotating cover is provided with an air cavity (41) in communication with an air source, the rotating cover is provided with a plurality of blowing holes (42) on the circumferential outer wall, the airflow discharged from the blowing holes forms an annular air passage (43) on the outer wall of the rotating cover and the inner wall of the shell, and the air passage is in communication with the discharge pipe; The first power source is a reduction motor (6), the reduction motor comprises a motor shaft (61), the rotating cover comprises a cover body (401), and the cover body is linked to the motor shaft; The rotating cover comprises a base (402), the inner wall of the shell is provided with a boss (101), the boss is provided with an air passage (102) connected to the air inlet pipe, the circumferential inner wall of the base is provided with an inlet hole (404) connected to the air passage, and the circumferential outer wall of the base is provided with the blowing hole connected to the inlet hole; A gap (105) is provided between the base and the inner wall of the bottom of the shell, and an air jet hole (106) communicating with the inlet hole is provided at the bottom of the base, and the air jet hole is communicated with the gap.

2. A spraying machine with gas mixed discharge according to claim 1, characterized in that: An air inlet pipe (44) communicating with the air cavity is provided at the bottom of the shell.

3. A spraying machine with gas mixed discharge according to claim 1, characterized in that: The base (402) of the rotating cover cooperates with the inner wall of the bottom of the shell.

4. A spraying machine with gas mixed discharge according to claim 3, characterized in that: The base is a nylon sealing ring.

5. A spraying machine with gas mixed discharge according to claim 1, characterized in that: The shell is provided with a first material drop opening (13), and a bracket (14) is provided in the shell relative to the first material drop opening. The bracket is provided with a second power source (141) and a first valve core (142) driven by the second power source, and the first valve core is used to rise / fall to close / open the first material drop opening.

6. A spraying machine with gas mixed discharge according to claim 5, characterized in that: The second power source is a bidirectional cylinder, which includes a first driving rod (1411) and a second driving rod (1412), wherein the first driving rod is connected to the first valve core, and the second driving rod is connected to the second valve core (143), and also includes a second blanking port (15) corresponding to the second valve core, and the second blanking port is arranged below the first blanking port.

7. A spraying machine for gas mixed discharging according to claim 6, characterized in that: A conical limiting hopper (16) is provided in the discharge cavity corresponding to the second discharge opening. The limiting hopper is provided above the rotating cover. The limiting hopper comprises a limiting opening (161). The limiting opening is provided coaxially with the rotating cover and the diameter of the limiting opening is smaller than the diameter of the rotating cover.

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