Automatic bag breaking, feeding and guniting all-in-one machine

Abstract

The utility model relates to the technical field of coal mine engineering machinery, in particular to an automatic bag breaking, feeding and guniting all-in-one machine which comprises a vehicle frame, a walking unit is arranged below the vehicle frame, a guniting machine is fixedly arranged on one side of the vehicle frame, a feeding unit is arranged on the other side of the vehicle frame, and bagged guniting materials are supplied to the guniting machine through the feeding unit. A cutting unit, a screening unit and a bag collecting unit are sequentially arranged in the conveying direction of bagged guniting materials, the cutting unit is used for cutting the bagged guniting materials, the screening unit is used for separating packaging bag fragments from the guniting materials, the bag collecting unit collects the packaging bag fragments, and the guniting materials leave the screening unit and enter a guniting machine. In the working process of the bagged guniting material, the working labor intensity is greatly reduced, no dust is discharged, the field working environment is improved, and the harm of discharged dust to the health of operators is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine engineering machinery, in particular to an automatic bag breaking, feeding and spraying integrated machine. Background Art

[0002] After decades of development, the concrete shotcrete support technology has become widely used in rock tunnel support for construction foundation pits, subways, slope protection, highways, high-speed rail tunnels, and mining projects. Traditional concrete support materials use cement (as a binder) mixed with sand and gravel (as aggregates) either on the surface or underground. This mixture is then fed into a shotcrete machine for shotcrete support. In recent years, with increased national environmental protection efforts, many new shotcrete materials have emerged. These materials are characterized by pre-mixing new binders with dried aggregates and admixtures (primarily accelerators) to create a new dry-mix shotcrete. This material is then bagged and transported directly to the mine, eliminating the need for further mixing and allowing for direct spraying underground.

[0003] The unpacking of existing bagged new dry-mix shotcrete is a manual process that requires unpacking and shaking the bags before unloading them into the shotcrete hopper. This is extremely labor-intensive, especially considering that the shotcrete can spray 5 to 8 cubic meters of material per hour. Furthermore, because the shotcrete is a dry mix, the process of unpacking and shaking the bags before unloading them into the shotcrete hopper generates a large amount of dust. This dust is then emitted through ventilation in the tunnel, severely polluting the working environment and endangering the health of underground workers. Summary of the Invention

[0004] The utility model aims to solve the problem that during the spraying operation in coal mines, the loading of the existing new dry-mixed spraying material is not only labor-intensive but also generates a large amount of dust, polluting the working environment and endangering the health of the underground workers. The utility model provides an automatic bag-breaking and loading spraying all-in-one machine, which greatly reduces the labor intensity of the operation during the bag-filled spraying material operation, and has no dust emission, thereby improving the on-site working environment and effectively reducing the health hazards of the emitted dust to the workers.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] An automatic bag-breaking, loading, and spraying machine comprises a frame with a travel unit disposed below the frame for moving the machine. The machine is fixedly mounted on one side of the frame, and a loading unit is disposed on the other side of the frame for feeding bagged spraying material to the machine. A cutting unit, a screening unit, and a bag collecting unit are sequentially disposed along the conveying direction of the bagged spraying material. The cutting unit is used to cut the bagged spraying material, the screening unit is used to separate bag fragments from the spraying material, and the bag collecting unit collects the bag fragments. The spraying material leaves the screening unit and enters the spraying machine. This achieves automated loading, bag-breaking, and screening.

[0007] Furthermore, the feeding unit includes an inclined feeding belt and a push belt connected to the discharge end of the feeding belt. The push belt is arranged horizontally, a cutting unit is arranged above the push belt, and the discharge port of the push belt is arranged above the spraying machine. The push belt is used to transport packaging bags and spraying material.

[0008] Furthermore, the cutting unit includes a set of cutting blades arranged in parallel and a first driving device for driving the cutting blades to rotate, wherein the rotation direction of the cutting blades is opposite to the conveying direction of the bagged spraying material. The cutting blades are used to cut the bagged spraying material.

[0009] Furthermore, the screening unit includes a drum screen, the feed port of which is arranged corresponding to the discharge port of the loading unit, the bag collecting unit is arranged at the other end of the drum screen away from the loading unit, and the mesh of the drum screen is connected to the feed port of the spraying machine. The drum screen is used to separate the packaging bags and the spraying material.

[0010] Furthermore, the drum screen is arranged horizontally, and a guide screw is fixedly arranged on the inner wall of the drum screen. The guide screw is used to push out the packaging bag fragments in the drum screen.

[0011] Furthermore, a feed shield is provided on the outside of the drum screen. The upper portion of the feed shield is square and houses the drum screen cylinder. The lower portion of the feed shield is conical and connected to the feed port of the shotcrete machine. The drum screen is installed on the upper portion of the feed shield, and the lower portion is connected to the shotcrete machine.

[0012] Furthermore, the machine also includes a dust removal unit, comprising a housing and a dust collector. The housing includes a cutting shield, a feeding shield, and a bag collecting shield that are interconnected. The cutting shield is used to seal the cutting unit, the feeding shield is used to seal the screening unit, and the bag collecting shield is used to seal the bag collecting unit. A dust removal port is provided on the side of the feeding shield, and the dust removal port is connected to the dust collector via a negative pressure hose. The dust collector is used to absorb dust from the feeding shield.

[0013] Furthermore, a dust curtain is provided at the feed end of the cutting shield. The dust curtain comprises a plurality of overlapping strips, the upper ends of which are fixed to the cutting shield via a pressure plate, while the lower ends of the strips contact the bagged spray material. The dust curtain does not affect the feed, while also providing a relative seal.

[0014] Furthermore, the bag collecting unit comprises a bag collecting filter bag, which is a flexible cloth bag made of breathable material and is used to accommodate the packaging bag of the bagged spraying material.

[0015] Furthermore, the walking unit is a crawler chassis. The crawler chassis can be equipped with rubber blocks, which can be well adapted to whether the roadway ground is paved with concrete or not.

[0016] Through the above technical solution, the beneficial effects of the utility model are:

[0017] This new machine features a loading unit, a cutting unit, a screening unit, and a bag collecting unit. Bags of spray material are placed on the loading unit. During the loading process, the cutting unit sever the bags, and the bagged materials pass through the screening unit. The bagged materials then enter the bag collecting unit, and the spray material enters the sprayer. This eliminates the need for bag unpacking or shaking, significantly reducing labor intensity. Furthermore, the loading height is low, keeping workers away from the cutting and separation of bagged spray material, effectively minimizing the health hazards posed by dust emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the main view of the utility model;

[0019] Figure 2 It is a left view of the utility model;

[0020] Figure 3 It is a top view of the utility model;

[0021] Figure 4 It is along Figure 3 Cross-sectional view along line AA;

[0022] Figure 5 This is a schematic diagram of the structure of the dust curtain of the utility model;

[0023] The numbers in the accompanying drawings are: 1-travel unit, 2-hydraulic system, 3-dust collector, 4-spraying machine, 5-spraying material outlet, 6-bag collecting cover, 7-unloading guard, 8-negative pressure hose, 9-hydraulic motor, 10-cutting guard, 11-bag collecting filter bag, 12-drum screen 13-guide spiral, 14-cutting blade, 15-push belt, 16-dust curtain, 17-feeding belt, 18-bagged spraying material. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figures 1 to 5 As shown, this embodiment provides an automatic bag breaking, loading and spraying integrated machine, including a frame, a walking unit 1, a loading unit, a cutting unit, a screening unit, a bag collecting unit, a dust removal unit and a spraying machine 4.

[0026] like Figure 1As shown, a walking unit 1 is provided under the frame, and the walking unit 1 is used for moving the spraying machine. A spraying machine 4 is fixedly provided on one side of the frame, and the spraying machine 4 is used for spraying the spraying material. A loading unit is provided on the other side of the frame, and the loading unit is used for loading the spraying machine 4.

[0027] The feeding unit supplies the bagged spray material 18 to the spray machine 4. A cutting unit, a screening unit and a bag collecting unit are sequentially arranged along the conveying direction of the bagged spray material 18. The cutting unit is used to cut the bagged spray material 18. The screening unit is used to separate the packaging bag fragments from the spray material. The bag collecting unit collects the packaging bag fragments. The spray material leaves the screening unit and enters the spray machine 4.

[0028] The loading unit includes an inclined loading belt 17 and a push belt 15 connected to the discharge end of the loading belt 17. The push belt 15 is arranged horizontally, and a cutting unit is arranged above the push belt 15. The discharge port of the push belt 15 is arranged above the shotcrete machine 4. During use, bagged spraying material 18 is placed on the bottom end of the loading belt 17, and is transported from the loading belt 17 to the push belt 15, where the bagged spraying material 18 is cut on the push belt 15. In this embodiment, one end of the push belt 15 is connected to the loading belt 17, and the other end enters the discharge shield 7. The cutting shield 10 and cutting blade 14 are arranged on the push belt 15. Specifically, the loading belt 17 and the push belt 15 are both driven by a hydraulic motor 9. The hydraulic motor 9 is connected to the hydraulic system 2 via a hydraulic pipeline. The hydraulic system 2 provides flow and pressure for the hydraulic motor.

[0029] The cutting unit includes a set of parallel cutting blades 14 and a first drive device that drives the cutting blades 14 to rotate. The direction of rotation of the cutting blades 14 is opposite to the direction of conveyance of the bagged spray material 18. The first drive device can be a hydraulic motor. Specifically, the number of the cutting blades is two or three, and the cutting blades 14 are circular rotating cutting blades. In another embodiment, the cutting blades 14 are stationary cutting blades.

[0030] The screening unit includes a trommel 12, the feed port of which corresponds to the discharge port of the loading unit. The bag collecting unit is located at the other end of the trommel 12, away from the loading unit. The mesh holes of the trommel 12 communicate with the feed port of the shotcrete machine 4. The trommel 12 is driven by a hydraulic motor and is densely covered with mesh holes. Bag fragments and sprayed material enter the trommel 12, and the sprayed material falls through the mesh holes at the bottom of the trommel 12 into the shotcrete machine 4. The bag fragments are collected by the bag collecting unit. Specifically, the mesh holes of the trommel 12 have a diameter of 15 to 20 mm.

[0031] like Figure 4As shown, in this embodiment, the drum screen 12 is arranged horizontally, and a guide screw 13 is fixedly arranged on the inner wall of the drum screen 12. The guide screw 13 rotates with the drum screen 12 and is used to push the packaging bag fragments in the drum screen 12 into the bag collecting cover 6.

[0032] The outer surface of the drum screen 12 is covered with a material discharge shield 7, the upper portion of the material discharge shield 7 is square, and the drum screen 12 cylinder is built in. The lower portion of the material discharge shield 7 is conical and connected to the feed port of the spraying machine 4. This allows the spraying material in the drum screen 12 to enter the drum screen 12, preventing the spraying material from flying around.

[0033] The apparatus further comprises a dust removal unit, comprising a housing and a dust collector 3. The housing comprises a cutting shield 10, a feeding shield 7, and a bag collecting cover 6, which are connected to each other. The cutting shield 10 is used to seal the cutting unit, the feeding shield 7 is used to seal the screening unit, and the bag collecting cover 6 is used to seal the bag collecting unit. A dust removal port is provided on the side of the feeding shield 7, and the dust removal port is connected to the dust collector 3 via a negative pressure hose 8. Specifically, the dust collector 3 is a dry negative pressure dust collector.

[0034] In this embodiment, the cutting guard 10 is arranged above the push belt 15, the discharge end of the cutting guard 10 is connected to the unloading guard 7, the other end of the unloading guard 7 opposite to the discharge end of the cutting guard 7 is connected to the bag collecting cover 6, the lower end cone of the unloading guard 7 is connected to the spraying machine 4, and the lower part of the bag collecting cover 6 is connected to the bag collecting filter bag 11.

[0035] A dust curtain 16 is installed at the feed end of the cutting shield 10. This curtain 16 comprises multiple overlapping strips. The upper ends of these strips are secured to the cutting shield 10 via a pressure plate, while the lower ends of the strips contact the bagged spray material 18. In this embodiment, the cutting shield 10 is positioned in correspondence with the push belt 15. The dust curtain 16 at the feed end of the push belt 15 not only does not interfere with the feed, but also provides a relatively tight seal. A rotatable cutting blade 14 is installed within the cutting shield 10 above the push belt 15. The dust curtain 16 is made of a soft material such as rubber or PVC.

[0036] The bag collecting unit includes a bag filter bag 11, which is a flexible cloth bag made of breathable material. In this embodiment, the bag filter bag 11 is disposed below the bag collecting cover 6 and is detachably connected to the bag collecting cover 6. The bag filter bag 11 is made of a breathable filter material and is used to collect the packaging bag of the bagged spray material 18. The accompanying drawings only show a schematic diagram of the bag filter bag 11 and do not represent the exact shape of the bag filter bag 11. The bag filter bag 11 is a flexible cloth bag, and the size of the cloth bag can be adjusted according to the specific equipment model.

[0037] The walking unit 1 is a crawler chassis. The crawler chassis can be equipped with rubber blocks, which can be well adapted to whether the roadway ground has been paved with concrete.

[0038] The spraying machine 4 can be a dust removal spraying machine. In this embodiment, a variety of spraying machines can be used, as long as they have the spraying function required by the utility model. Figure 1 As shown, a feed port is provided at the top of the shotcrete machine 4, and a shotcrete material outlet 5 is provided at the bottom of the shotcrete machine 4. The shotcrete machine with a shotcrete function is a mature existing technology, and the specific internal structure is not described here. Preferably, the shotcrete machine 4 is a rotor-type shotcrete machine.

[0039] During operation, the bagged spraying material 18 is placed on the feeding belt 17 in a manual or mechanical manner according to the direction, and enters the pushing belt 15 under the transportation of the feeding belt 17. The bagged spraying material 18 is cut into 3 or 4 parts by the cutting piece 14 during the forward pushing process of the pushing belt 15. The cut packaging bags and spraying material are sent to the drum screen 12 in the unloading shield 7 by the pushing belt 15. Under the rotation of the drum screen 12, the spraying material passes through the sieve hole and enters the spraying machine 4 downward; the packaging bag enters the bag collecting cover 6 under the action of the guide screw 13 in the drum screen 12, and continues to fall downward into the bag collecting filter bag 11. During operation, it is only necessary to clean the bag collecting filter bag 11 regularly.

[0040] During the entire working process, the dust-proof curtain 16, the cutting shield 10, the pushing belt 15, the unloading shield 7, the bag collecting cover 6, and the bag collecting filter bag 11 form a relatively closed space. The dust-proof curtain 16 is used to seal the cutting shield 10, which can not only play a certain sealing role, but also does not affect the bagged spraying material 18 from entering the pushing belt 15. The cutting and breaking process of the bagged spraying material 18 and the separation process of the packaging bag fragments and the spraying material after cutting are both carried out in a closed space. The generated dust enters the dust collector 3 through the negative pressure hose 8. There is no dust emission during the working process, which improves the on-site working environment and reduces the health hazards of the emitted dust to the operators.

[0041] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. An automatic bag breaking, feeding and spraying integrated machine, comprising a frame, a walking unit (1) is arranged below the frame, and is characterized in that: A shotcrete machine (4) is fixedly arranged on one side of the vehicle frame, and a feeding unit is arranged on the other side of the vehicle frame. The feeding unit supplies bagged shotcrete material (18) to the shotcrete machine (4). A cutting unit, a screening unit, and a bag collecting unit are sequentially arranged along the conveying direction of the bagged shotcrete material (18). The cutting unit is used to cut the bagged shotcrete material (18), the screening unit is used to separate the packaging bag fragments from the shotcrete material, and the bag collecting unit collects the packaging bag fragments. The shotcrete material leaves the screening unit and enters the shotcrete machine (4).

2. The automatic bag breaking, feeding and spraying machine according to claim 1, characterized in that: The feeding unit comprises a feeding belt (17) arranged obliquely and a pushing belt (15) connected to the discharge end of the feeding belt (17); the pushing belt (15) is arranged horizontally; a cutting unit is arranged above the pushing belt (15); and a discharge port of the pushing belt (15) is arranged above the spraying machine (4).

3. The automatic bag breaking, feeding and spraying machine according to claim 1, characterized in that: The cutting unit comprises a group of cutting blades (14) arranged in parallel and a first driving device for driving the cutting blades (14) to rotate, wherein the rotation direction of the cutting blades (14) is opposite to the conveying direction of the bagged spraying material (18).

4. The automatic bag breaking, feeding and spraying machine according to claim 1, characterized in that: The screening unit comprises a drum screen (12), the feed port of the drum screen (12) is arranged corresponding to the discharge port of the loading unit, the bag collecting unit is arranged at the other end of the drum screen (12) away from the loading unit, and the sieve holes of the drum screen (12) are connected to the feed port of the spraying machine (4).

5. The automatic bag breaking, feeding and spraying machine according to claim 4, characterized in that: The drum screen (12) is arranged horizontally, and a guide screw (13) is fixedly arranged on the inner wall of the drum screen (12).

6. The automatic bag breaking, feeding and spraying machine according to claim 4, characterized in that: The drum screen (12) is externally sleeved with a material discharge shield (7); the upper portion of the material discharge shield (7) is square and houses the drum screen (12) cylinder; the lower portion of the material discharge shield (7) is conical and connected to the feed port of the spraying machine (4).

7. The automatic bag breaking, feeding and spraying machine according to claim 1, characterized in that: The invention also includes a dust removal unit, which includes a cover body and a dust collector (3). The cover body includes a cutting shield (10), a feeding shield (7) and a bag collecting cover (6) which are connected to each other. The cutting shield (10) is used to seal the cutting unit, the feeding shield (7) is used to seal the screening unit, and the bag collecting cover (6) is used to seal the bag collecting unit. A dust removal port is provided on the side of the feeding shield (7), and the dust removal port is connected to the dust collector (3) through a negative pressure hose (8).

8. The automatic bag breaking, feeding and spraying machine according to claim 7, characterized in that: A dustproof curtain (16) is provided at the feed end of the cutting shield (10), and the dustproof curtain (16) comprises a plurality of strip-shaped and mutually overlapping baffles, the upper ends of the baffles being fixed to the cutting shield (10) via a pressing plate, and the lower ends of the baffles being in contact with the bagged spraying material (18).

9. The automatic bag breaking, feeding and spraying machine according to claim 1, characterized in that: The bag collecting unit comprises a bag collecting filter bag (11), and the bag collecting filter bag (11) is a flexible cloth bag made of breathable material.

10. The automatic bag breaking, feeding and spraying machine according to claim 1, characterized in that: The walking unit (1) is a crawler chassis.

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