Sprayed concrete springback material collecting and dust falling device

Abstract

The utility model discloses a sprayed concrete springback material collecting and dust falling device, and belongs to the technical field of sprayed concrete springback material collecting. The device comprises shed cloth. The shed cloth is trumpet-shaped, and the shed cloth is arranged on the outer side of the concrete spraying nozzle in a sleeving manner; the small-diameter side of the shed cloth is fixed to the spray head through a connecting piece, and the end of the large-diameter side of the shed cloth is detachably connected with a recovery tank. The springback concrete in all directions can fall into the shed cloth and enter the recovery tank, so that the springback concrete can be recycled, the springback amount part in the sprayed concrete can be collected and reused, and the utilization rate of the sprayed concrete is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sprayed concrete rebound material collection, and relates to a sprayed concrete rebound material collection and dust reduction device. Background Art

[0002] The most commonly used material in the construction field is concrete, an artificial stone made by uniform mixing, compacting, curing and hardening. It plays an important role in the construction of houses and other facilities. Concrete is also indispensable in tunnel construction to reinforce the walls around the tunnel.

[0003] In the process of shotcrete construction, the use of high-pressure spray guns is to first mix the pre-prepared cement, sand, gravel, water and a certain amount of accelerator, and then spray it out at high speed under the action of the concrete pump. When spraying it onto the surface of the building, it often produces large smoke and dust. These smoke and dust not only affect the sight of the construction workers, but also the construction workers are easy to inhale the smoke and dust, which will cause harm to the body for a long time. And because the concrete may rebound partially after being sprayed onto the wall or the top, that is, the sprayed concrete fails to fully adhere to the construction surface and rebounds back, these rebound materials will not only affect the compactness and strength of the concrete, but also cause environmental pollution and safety hazards. The rebound amount of shotcrete refers to the rebound amount of shotcrete when the aggregate, water or mixed concrete is sprayed onto the surrounding rock during the process of shotcrete. Because it cannot condense in time, the concrete that falls partially is the rebound amount of shotcrete. Therefore, the control of the rebound amount is not only related to the support quality of shotcrete, but also plays an important role in the cost control of the project. Through investigation and research, it is known that the rebound amount of shotcrete in tunnel projects is generally around 20%-30%, which is a large loss. Because the rebound of shotcrete is affected by many factors, including the concrete ratio, the amount of air volume during shotcrete spraying, the distance between the spray nozzle and the rock surface, etc., the rebound is inevitable. The current tunnel construction project has a very transparent profit. If the construction is not well controlled, it may cause losses. Therefore, the control of the rebound of shotcrete during the construction process has always been an important part of the cost control of tunnel construction, and has great economic value for the construction. Utility Model Content

[0004] The utility model aims to provide a device for collecting and reducing dust of shotcrete rebound material, so as to solve the technical problems in the prior art that shotcrete rebound material is wasted and dust affects the health of construction workers.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a device for collecting and reducing dust of shotcrete rebound material, comprising a shed cloth; the shed cloth is in a trumpet shape and is sleeved on the outside of a shotcrete nozzle; a side of the shed cloth with a small diameter is fixed to the nozzle through a connecting piece, and an end of a side of the shed cloth with a large diameter is detachably connected with a recovery groove.

[0007] Furthermore, an annular spray pipe is circumferentially arranged on the inner wall of the shed cloth; the annular spray pipe is located outside the spray head, and the annular spray pipe is connected to a water pipe; and a plurality of spray heads are arranged on the annular spray pipe.

[0008] Furthermore, the connecting piece is an annular connecting pipe, and the annular connecting pipe is detachably connected to the nozzle.

[0009] Furthermore, the connection between the annular connecting pipe and the nozzle is a threaded connection.

[0010] Furthermore, a plurality of fixing rods are provided on the side wall of the shed cloth; one end of the fixing rod is fixedly connected to the annular connecting pipe, and the other end of the fixing rod is fixedly connected to the recovery groove.

[0011] Furthermore, the connection between the fixing rod and the annular connecting pipe is a threaded connection.

[0012] Furthermore, the connection between the fixing rod and the recovery tank is a threaded connection.

[0013] Furthermore, a feeding port is provided at the bottom of the recovery tank; and the feeding port is detachably connected to a first feeding pipe.

[0014] Furthermore, a second material delivery pipe is arranged on the side wall of the shed cloth; the second material delivery pipe is arranged close to the nozzle.

[0015] Furthermore, the connection between the second material conveying pipe and the side wall of the shed cloth is a detachable connection.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model discloses a device for collecting and dusting rebound materials of shotcrete. A shed cloth is sleeved on the outer side of a spray head, and a recovery groove is arranged at the bottom end of the shed cloth. The shed cloth is arranged around the sprayed concrete to prevent the concrete from rebounding and falling. The rebound materials of the concrete flow into the recovery groove at the bottom end for collection. The utility model allows the rebound concrete in all directions to fall into the shed cloth and enter the recovery groove, so that the rebound materials can be recycled. The rebound part of the shotcrete can be collected and reused, thereby improving the utilization rate of the shotcrete.

[0018] Furthermore, the utility model is provided with an annular spray tube and a plurality of spray heads, which can perform spray dust removal when smoke is emitted from the building surface by spraying concrete from the nozzle body, thereby preventing the smoke from affecting the sight of construction workers and preventing the construction workers from inhaling a lot of smoke and harming their bodies, thereby realizing integrated dust recovery and reduction.

[0019] Furthermore, the utility model is also provided with a second material delivery pipe near the nozzle, so as to facilitate the recovery of the rebound material that falls directly when spraying at the top of the tunnel.

[0020] Furthermore, the first material delivery pipe and the second material delivery pipe of the utility model are both detachable, and if blocked, they can be cleared by disassembly, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a left view of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the annular connecting pipe of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the recovery tank of the utility model.

[0026] Among them: 1-spray head; 2-annular connecting pipe; 3-water pipe; 4-annular spray pipe; 5-spray head; 6-shed cloth; 7-fixing rod; 8-recovery trough; 9-feeding port; 10-first feed pipe; 11-second feed pipe; 201-screw hole; 202-nut; 701-screw. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] The utility model is further described in detail below with reference to the accompanying drawings:

[0034] See also Figure 1The utility model discloses a device for collecting and reducing dust of shotcrete rebound material, comprising a shed cloth 6; the shed cloth 6 is trumpet-shaped and is sleeved on the outside of a shotcrete nozzle 1; the small-diameter side of the shed cloth 6 is fixed to the nozzle 1 through a connecting piece, and the end of the large-diameter side of the shed cloth 6 is detachably connected to a recovery trough 8. The utility model allows rebound concrete in all directions to fall into the shed cloth 6 and enter the recovery trough 8, so that it can be recycled, and can collect the rebound part of the shotcrete and reuse it, thereby improving the utilization rate of the shotcrete.

[0035] In a feasible embodiment of the utility model, an annular spray pipe 4 is arranged on the inner wall of the awning cloth 6 in the circumferential direction; the annular spray pipe 4 is located outside the nozzle 1, and the annular spray pipe 4 is connected to the water pipe 3; and a plurality of spray heads 5 are arranged on the annular spray pipe 4. When the nozzle 1 sprays concrete and emits smoke and dust on the surface of the building, spray dust removal can be performed, thereby preventing the smoke and dust from affecting the sight of the construction workers and preventing the construction workers from inhaling a lot of smoke and dust and damaging their bodies, thereby realizing integrated recovery and dust reduction.

[0036] In a feasible embodiment of the present invention, the connecting member is an annular connecting pipe 2, which is detachably connected to the nozzle 1, preferably by threaded connection; the connection can be made by opening a screw hole 201 and connecting through a nut 202, such as Figure 3 See Figure 2 In the utility model, the awning cloth 6, the annular spray pipe 4 and the nozzle 1 are all coaxially arranged and connected with the sleeve-shaped annular connecting pipe 2 through a plurality of fixing rods 7.

[0037] In a feasible embodiment of the utility model, the side wall of the awning cloth 6 is provided with a plurality of fixing rods 7; one end of the fixing rod 7 is threadedly connected to the annular connecting pipe 2, and the other end of the fixing rod 7 is threadedly connected to the recovery groove 8; the connection can be made by screws 701, such as Figure 4 shown.

[0038] In a feasible embodiment of the utility model, a feeding port 9 is provided at the bottom of the recovery tank 8; the feeding port 9 is detachably connected to a first feeding pipe 10. A second feeding pipe 11 is also detachably connected to the side wall of the awning cloth 6; the second feeding pipe 11 is arranged near the nozzle 1. The utility model is provided with a recovery tank 8 at the bottom end of the awning cloth 6 to facilitate the flow of rebound material into the recovery tank 8, and a second feeding pipe 11 is also provided near the nozzle 1 to facilitate the recovery of rebound material that falls directly when spraying at the top of the tunnel.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for collecting and reducing dust from rebound materials of shotcrete, characterized in that: The invention comprises a shed cloth (6); the shed cloth (6) is trumpet-shaped and is sleeved on the outside of a shotcrete nozzle (1); a side with a small diameter of the shed cloth (6) is fixed to the nozzle (1) via a connecting piece, and a side end with a large diameter of the shed cloth (6) is detachably connected to a recovery trough (8).

2. A device for collecting and reducing dust from rebound material of shotcrete according to claim 1, characterized in that: An annular spray pipe (4) is arranged on the circumference of the inner wall of the awning cloth (6); the annular spray pipe (4) is located outside the spray head (1), and the annular spray pipe (4) is connected to a water pipe (3); and a plurality of spray heads (5) are arranged on the annular spray pipe (4).

3. The device for collecting and reducing dust of shotcrete rebound material according to claim 1, characterized in that: The connecting piece is an annular connecting pipe (2), and the annular connecting pipe (2) is detachably connected to the spray head (1).

4. A device for collecting and reducing dust from rebound material of shotcrete according to claim 3, characterized in that: The connection between the annular connecting pipe (2) and the nozzle (1) is a threaded connection.

5. The device for collecting and reducing dust of shotcrete rebound material according to claim 3, characterized in that: A plurality of fixing rods (7) are arranged on the side wall of the shed cloth (6); one end of the fixing rod (7) is fixedly connected to the annular connecting pipe (2), and the other end of the fixing rod (7) is fixedly connected to the recovery tank (8).

6. The device for collecting and reducing dust of shotcrete rebound material according to claim 5, characterized in that: The connection between the fixing rod (7) and the annular connecting pipe (2) is a threaded connection.

7. The device for collecting and reducing dust of shotcrete rebound material according to claim 5, characterized in that: The connection between the fixing rod (7) and the recovery tank (8) is a threaded connection.

8. The device for collecting and reducing dust of shotcrete rebound material according to claim 1, characterized in that: A material delivery port (9) is provided at the bottom of the recovery tank (8); the material delivery port (9) is detachably connected to a first material delivery pipe (10).

9. The device for collecting and reducing dust of shotcrete rebound material according to claim 1, characterized in that: A second material delivery pipe (11) is also provided on the side wall of the awning cloth (6); the second material delivery pipe (11) is provided close to the nozzle (1).

10. The device for collecting and reducing dust of shotcrete rebound material according to claim 9, characterized in that: The connection between the second material conveying pipe (11) and the side wall of the awning cloth (6) is a detachable connection.

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