Spray coater hopper

Abstract

This utility model discloses a hopper for a spraying machine, relating to the technical field of spraying equipment for paint spraying. The hopper includes a hopper body and a feeding device. The feeding device is located at the top of the hopper body and communicates with the chamber of the hopper body. The feeding device has an inlet for the inflow of spraying material or paint. A bag-breaking device is installed at the inlet of the feeding device. The bag-breaking device includes several steel plates, which are spliced ​​together on the side away from the feeding device to form a sharpening zone. The sharpening zone is frustoconical, with its tip higher than the inlet, and is used to puncture the ton bag, allowing the spraying material or paint to flow into the hopper body. The hopper of this utility model eliminates the need for operators to stand under the ton bag containing spraying material or paint and use a cutter to puncture the ton bag, thus eliminating safety hazards for personnel. Furthermore, by puncturing the bottom of the ton bag through the sharp tip and side (i.e., the sharpening zone) of the bag-breaking device, the operation efficiency is high.

Description

Technical Field

[0001] This utility model relates to the technical field of spray coating equipment, specifically a feeding hopper for a spray coating machine. Background Technology

[0002] There are two types of spraying machines: one is a mortar spraying machine, and the other is a paint mixer. However, the feed inlets of current spraying machines and mixers are all upward-facing, and there is no bag-breaking device at the top of the feed inlet (e.g., Figure 1 (As shown). During feeding, the overhead crane suspends the ton bag of spraying material or paint above the feed inlet. When the bottom of the ton bag of spraying material or paint is 250-450mm above the feed inlet, the feeding personnel use a cutter to cut open the bottom packaging bag of the spraying material or paint, and the spraying material or paint will automatically flow into the feeding device.

[0003] Therefore, the feeding devices in existing spraying machines or mixers have the following defects and shortcomings when feeding materials:

[0004] ① There are safety hazards for personnel operation during the feeding operation: The existing feeding technology first requires the overhead crane to suspend the ton bag containing the spraying material or paint, and then the operator stands under the ton bag containing the spraying material or paint and uses a cutter to cut the ton bag. During the operation, the ton bag containing the spraying material or paint is at risk of falling, which poses a safety hazard to personnel operation.

[0005] ② Low efficiency of feeding method: The bottom of the ton bag is cut open manually with a cutter. Each cutter can only make a small opening, so this feeding method is inefficient. Utility Model Content

[0006] The purpose of this invention is to provide a feeding hopper for a spraying machine to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a hopper for a spraying machine, comprising a hopper body and a feeding device, wherein the feeding device is disposed at the top of the hopper body and communicates with the chamber of the hopper body, the feeding device is provided with an inlet for the inflow of spraying material or paint, and a bag-breaking device is installed at the inlet of the feeding device, the bag-breaking device comprising several steel plates, wherein the side of the several steel plates away from the feeding device is spliced ​​together to form an opening area, the opening area is frustoconical, the tip of the opening area is higher than the inlet and is used to puncture the ton bag to allow the spraying material or paint to flow into the hopper body.

[0008] Based on the above technical features, the spraying machine hopper of this utility model is equipped with a bag-breaking device at the inlet of its feeding device. During operation, the overhead crane suspends the ton bag containing the spraying material or paint and slowly lowers the ton bag. The bottom of the ton bag is punctured by the sharp tip and side (i.e., the opening area) of the bag-breaking device, allowing the spraying material or paint to flow into the chamber of the hopper body under gravity. In this process, the operator does not need to stand under the ton bag containing the spraying material or paint and use a cutter to cut the ton bag. Therefore, there is no risk of the ton bag containing the spraying material or paint falling during operation, and there are no safety hazards for personnel. At the same time, by puncturing the bottom of the ton bag through the sharp tip and side of the bag-breaking device, this feeding method has high work efficiency.

[0009] Preferably, in this technical solution, a mesh is also installed at the feed inlet of the feeding device. The mesh is fixedly connected to the bag breaking device and is used to intercept large aggregate particles in the sprayed material or coating.

[0010] Based on the above technical features, a mesh is installed at the feed inlet of the feeding device. The mesh, with holes of a fixed size, can effectively intercept large or non-compliant aggregate particles, ensuring that the particle size of the sprayed material or coating entering the hopper is uniform. At the same time, the mesh can also prevent loose sprayed material or coating from accumulating at the feed inlet during feeding, thus preventing blockage.

[0011] Preferably, in this technical solution, the ends of several steel plates furthest from the front zone pass through the mesh and are welded to the inner wall of the feeding device. The ends of all steel plates furthest from the front zone are positioned at the same horizontal level on the inner walls of the feeding device. The dimensions of the feeding device and the bag-breaking device satisfy the following:

[0012] H 1＝ (1 / 2 - 2 / 3) × R;

[0013] H 2＝ (1 / 2 - 2 / 3) × R;

[0014] Where: R is the diameter at the feed inlet, H1 is the vertical distance from the tip of the sharpening zone to the feed inlet, and H2 is the vertical distance from the same horizontal line position of the steel plate fixed to the inner wall of the feeding device to the feed inlet.

[0015] Based on the above technical features, by limiting the dimensions of the feeding device and the bag-breaking device, the structural strength of the bag-breaking device after installation can be ensured, thereby making the bag-breaking process more stable and improving the bag-breaking efficiency.

[0016] Preferably, in this technical solution, an annular boss is provided at the feed inlet, and the mesh is placed on the annular boss.

[0017] Based on the above technical features, the annular boss can evenly distribute the load transmitted by the mesh onto the support surface, avoiding local stress concentration; at the same time, when a local mesh is damaged, the design of the annular boss also allows for quick disassembly and replacement, reducing maintenance costs.

[0018] Preferably, in this technical solution, the feeding device is an inverted frustum shape, wider at the top and narrower at the bottom, and the bag-breaking device is welded to the inner wall of the feeding device.

[0019] Based on the above technical features, its feeding device is designed in the shape of an inverted truncated cone, and its inclined wall can cause the sprayed material or paint to slide naturally into the hopper body under the action of gravity.

[0020] Preferably, in this technical solution, the tip of the sharpening zone is located at the center of the feed inlet along the vertical projection direction.

[0021] Based on the above technical features, the puncture point of the ton bag can be located in the exact center of the bottom of the ton bag, making it less likely for the sprayed fabric or paint to spill outside the feeding device.

[0022] Preferably, in this technical solution, the bag-breaking device consists of three steel plates, which are evenly distributed along the vertical projection direction. Alternatively, the bag-breaking device consists of four steel plates, which are evenly distributed along the vertical projection direction. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a feeding device in the prior art;

[0024] Figure 2 This is a schematic diagram of the feeding device in the first embodiment of the present invention (the grid is omitted in this figure);

[0025] Figure 3 This is a side view of the feeding device in the first embodiment of the present invention;

[0026] Figure 4 This is a top view of the feeding device in the first embodiment of the present invention;

[0027] Figure 5 This is a side view of the feeding device in the second embodiment of the present invention;

[0028] Figure 6 This is a top view of the feeding device in the second embodiment of this utility model.

[0029] In the diagram: 1. Feeding device; 2. Inlet; 3. Bag breaking device; 4. Steel plate; 5. Opening zone; 6. Mesh; 7. Annular boss. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0034] Before understanding this utility model, it is important to know that there are two types of spraying machines: one is a spraying material spraying machine, and the other is a paint mixer.

[0035] In the field of refractory blasting, the blasting machine is used to apply bulk blasting material to the surface of high-temperature refractory materials, enabling localized repairs of refractory materials during hot repairs. Common blasting machines include electric furnace lining blasting machines and VD furnace cover nozzle blasting machines. The main auxiliary equipment of the blasting machine includes an air tank, a nozzle, and a feeding hopper (including the hopper body and feeding device 1). Before blasting, the required blasting material is added from the feeding device 1. Compressed air from the air tank delivers the blasting material from the feeding hopper to the nozzle through a hose. A water pipe is tied to the blasting material hose. While the nozzle sprays the blasting material onto the high-temperature refractory surface, water from the water pipe is also sprayed onto the high-temperature refractory surface through the nozzle. Water and blasting material are sprayed from the nozzle in a certain ratio. Through the blasting machine, the blasting material can be applied to the surface of high-temperature refractory materials. The parameters of a typical blasting machine currently in use are shown in Table 1.

[0036] <![CDATA[Production capacity m 3 / min]]> 0.1-3.0 Main motor KW 5.5 Dust collector motor KW 1.1

[0037] Table 1

[0038] In the field of paint application, the role of a mixer is to mix and stir bulk paint with water to make the paint ready for application. Common mixers include medium-sized paint mixers. The auxiliary equipment of a mixer includes a motor, a nozzle, and a feeding hopper. Before paint mixing, paint is first added through the feeding device 1, and the motor is turned on to rotate the mixer. A water pipe allows water to be added to the feeding device 1. Water is added to the mixer simultaneously with the paint from the feeding device 1. The water and paint are mixed in a specific ratio. Through the mixing process of the mixer, the paint becomes ready for application. Typical parameters of currently used mixers are shown in Table 2.

[0039]

[0040] Table 2

[0041] like Figure 1 As shown, whether it is a spraying material spraying machine or a paint mixer, the top of the feed inlet 2 of the feeding device 1 of the spraying machine and the mixer does not have a bag-breaking device 3. When feeding, the overhead crane hangs the ton bag of spraying material or paint above the feed inlet. When the bottom of the ton bag of spraying material or paint is 250-450mm above the feed inlet 2, the feeding personnel cut the bottom packaging bag of the spraying material or paint with a cutter. The spraying material or paint will then flow into the feeding device 1 automatically by its own gravity.

[0042] like Figures 2 to 6 As shown, this utility model provides a technical solution: a hopper for a spraying machine, including a hopper body and a feeding device 1. The feeding device 1 is located at the top of the hopper body and is connected to the chamber of the hopper body. The feeding device 1 has an inlet 2 for the flow of spraying material or paint. A bag-breaking device 3 is installed at the inlet 2 of the feeding device 1. The bag-breaking device 3 includes several steel plates 4. The side of the several steel plates 4 away from the feeding device 1 is spliced ​​together to form a sharpening area 5. The sharpening area 5 is truncated cone-shaped. The tip of the sharpening area 5 is higher than the inlet 2 and is used to puncture the ton bag so that the spraying material or paint flows into the hopper body.

[0043] The spraying machine hopper of this utility model has a bag-breaking device 3 installed at the inlet 2 of its feeding device 1. During operation, the overhead crane suspends the ton bag containing the spraying material or paint and slowly lowers the ton bag. The bottom of the ton bag is punctured by the sharp tip and side (i.e., the opening area) of the bag-breaking device, and the spraying material or paint flows into the chamber of the hopper body by gravity. In this process, the operator does not need to stand under the ton bag containing the spraying material or paint and use a cutter to cut the ton bag. Therefore, there is no risk of the ton bag containing the spraying material or paint falling during operation, and there is no safety hazard for personnel. At the same time, by puncturing the bottom of the ton bag with the sharp tip and side of the bag-breaking device 3, this feeding method has high operation efficiency.

[0044] like Figures 2 to 4 As shown, this is a first embodiment of the feeding device 1 in the hopper of a spraying machine. A mesh 6 is installed at the inlet 2 of the feeding device 1. The mesh 6 is fixedly connected to the bag-breaking device 3 and is used to intercept large particles of aggregate in the spraying material or paint. Several steel plates 4, with one end away from the front zone 5, pass through the mesh 6 and are welded to the inner wall of the feeding device 1.

[0045] This feeding device 1 is funnel-shaped. During manufacturing, the end of the steel plate 4 furthest from the sharpening zone 5 passes through the mesh 6 and is welded to the inner wall of the feeding device 1. The tops of the steel plates 4 are spliced ​​together to form a frustum-shaped sharpening zone 5, meaning the sharp corners and sides of the steel plates 4 are sharpened. Then, the mesh 6 is welded horizontally to the feed inlet 2. The mesh 6, with its fixed-size holes, can effectively intercept excessively large or non-compliant large aggregate particles, ensuring that the particle size of the sprayed material or coating entering the hopper is uniform. At the same time, the mesh 6 also prevents loose sprayed material or coating from accumulating at the feed inlet 2 during feeding, thus preventing blockage.

[0046] like Figure 3 As shown, the ends of all steel plates 4 furthest from the front zone 5 are positioned at the same horizontal level on the inner walls of the feeding device 1. The dimensions of the feeding device 1 and the bag-breaking device 3 satisfy the following:

[0047] H 1＝ (1 / 2 - 2 / 3) × R;

[0048] H 2＝ (1 / 2 - 2 / 3) × R;

[0049] Where: R is the diameter at the feed inlet 2, H1 is the vertical distance from the tip of the sharpening zone 5 to the feed inlet 2, and H2 is the vertical distance from the same horizontal line position of the steel plate 4 fixed to the inner wall of the feeding device 1 to the feed inlet 2.

[0050] Preferably, in order to facilitate quick disassembly and replacement of the grid 6 and reduce maintenance costs, an annular boss 7 can be provided at the feed inlet 2 in this embodiment, and the grid 6 can be directly placed on the annular boss 7.

[0051] like Figures 5 to 6 The image shows a second embodiment of the feeding device 1 in the hopper of a spray painting machine. The feeding device 1 is shaped like an inverted frustum, wider at the top and narrower at the bottom, and the bag-breaking device 3 is directly welded to the inner wall of the feeding device 1. In this embodiment, the inclination angle of the inclined wall of the feeding device 1 is controlled between 45° and 60° to allow the spray material or paint to slide naturally into the hopper body under gravity. Furthermore, compared to the first embodiment, this embodiment eliminates the step of setting a mesh 6 at the inlet 2. Therefore, to prevent the spray material or paint from accumulating at the inlet 2, the feeding device 1 can be made of a high-wear-resistant liner, and its wall surface can be sanded.

[0052] In the first and second embodiments described above, to ensure that the puncture point of the ton bag is precisely in the center of the bottom of the ton bag, and to prevent the sprayed material or paint from spilling outside the feeding device 1, the tip of the puncture zone 5 is located at the center of the feed inlet 2 along the vertical projection direction. Simultaneously, the number of steel plates in the bag-breaking device 3 can be three or four. When the bag-breaking device 3 consists of three steel plates 4, the three steel plates 4 are evenly distributed along the vertical projection direction; for example, the included angle between two adjacent steel plates 4 can be selected as 120°. When the bag-breaking device 3 consists of four steel plates 4, the four steel plates 4 are evenly distributed along the vertical projection direction; for example, the included angle between two adjacent steel plates 4 can be selected as 90°.

[0053] The feeding device 1 in the first and second embodiments shown can be applied to sprayers and mixers. Both the spraying material and the paint are in bulk, with a particle size of 0-5mm accounting for more than 80%, and the maximum aggregate particle size ≤60mm. Water needs to be added before spraying the spraying material and mixing the paint.

[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hopper for a spraying machine, comprising a hopper body and a feeding device (1), wherein the feeding device (1) is disposed at the top of the hopper body and communicates with the chamber of the hopper body, and the feeding device (1) is provided with an inlet (2) for the inflow of spraying material or paint, characterized in that, A bag-breaking device (3) is installed at the feed inlet (2) of the feeding device (1). The bag-breaking device (3) includes several steel plates (4), wherein... Several steel plates (4) are spliced ​​together on the side away from the feeding device (1) to form a sharpening zone (5). The sharpening zone (5) is truncated cone-shaped. The tip of the sharpening zone (5) is higher than the feed inlet (2) and is used to puncture the ton bag so that the spraying material or paint flows into the hopper body.

2. The applicator hopper of claim 1, wherein, A mesh (6) is also installed at the feed inlet (2) of the feeding device (1). The mesh (6) is fixedly connected to the bag breaking device (3) and is used to intercept large aggregate particles in the sprayed material or coating.

3. The spraying machine feeding hopper according to claim 2, characterized in that, Several steel plates (4) are passed through a grid (6) at one end away from the front zone (5) and welded to the inner wall of the feeding device (1).

4. The applicator hopper of claim 3, wherein, All steel plates (4) are positioned at the same horizontal level on the inner wall of the feeding device (1) at the end furthest from the front zone (5).

5. The applicator hopper of claim 4, wherein, The dimensions of the feeding device (1) and the bag-breaking device (3) satisfy the following: H 1＝ (1 / 2-2 / 3) x R; H 2＝ (1 / 2-2 / 3) x R; Where: R is the diameter at the feed inlet (2), H1 is the vertical distance from the tip of the sharpening zone (5) to the feed inlet (2), and H2 is the vertical distance from the same horizontal line position of the steel plate (4) fixed to the inner wall of the feeding device (1) to the feed inlet (2).

6. The applicator hopper of claim 2, wherein, An annular boss (7) is provided at the feed inlet (2), and the mesh (6) is placed on the annular boss (7).

7. The applicator hopper of claim 1, wherein, The feeding device (1) is in the shape of an inverted frustum, which is wider at the top and narrower at the bottom. The bag breaking device (3) is welded to the inner wall of the feeding device (1).

8. The applicator hopper of any one of claims 1 to 7, wherein, Along the vertical projection direction, the tip of the sharpening zone (5) is located at the center of the feed inlet (2).

9. The applicator hopper of claim 8, wherein, The bag-breaking device (3) consists of three steel plates (4), which are evenly distributed along the vertical projection direction.

10. The spraying machine hopper according to claim 8, characterized in that, The bag-breaking device (3) consists of four steel plates (4), which are evenly distributed along the vertical projection direction.

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