Sealing plate stamping structure of shotcrete machine

Abstract

The sealing plate stamping structure of the concrete spraying machine comprises a sealing plate, the sealing plate comprises a sealing bottom plate, a flexible sealing layer is arranged on the sealing bottom plate, a sealing plate boss is arranged on the sealing bottom plate, a sealing groove matched with the sealing plate boss is correspondingly formed in the flexible sealing layer, and the sealing plate boss is wrapped with the flexible sealing layer. Under the condition that the boundary dimensions of an existing upper sealing plate and an existing lower sealing plate are not increased, the using amount of rubber is reduced, the production cost is greatly reduced, the structure is simple, implementation is convenient, universality is high, due to the fact that the sealing plate boss structure is adopted, part of pressure can be buffered, the hardness of the upper sealing plate and the hardness of the lower sealing plate are increased, and the service life is prolonged. And the service lives of the upper sealing plate and the lower sealing plate are prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of spraying machine technology. It is a spraying machine that is widely used in spraying concrete construction operations in mines, tunnels, culverts, subways, hydropower projects, underground projects and coal mine high-altitude mine roadways. Specifically, it relates to an upper sealing plate and lower sealing plate boss structure device for a concrete spraying machine. Background Technology

[0002] The working principle of a concrete spraying machine: The mixed material from the concrete mixer is added to the vibrating hopper, passes through a screen, and enters the rotor body and steel liner through the hopper and upper sealing plate, forming a cavity with the lower sealing plate. The upper sealing plate is fixed to the hopper, and the lower sealing plate is fixed to the panel. The upper and lower sealing plates are components made by vulcanizing a certain thickness of rubber onto circular steel plates. Under external force, the rubber of the sealing plates is compressed and deformed, thus tightly adhering to the high-hardness steel liner, creating a sealed cavity. The rotor body and steel liner, filled with the mixed material, rotate with the rotor body to the discharge port. Here, compressed air from the upper air duct blows the material into the vortex bend, and another stream of compressed air is introduced from the vortex bend, accelerating the mixed material and guiding it into the delivery pipe. Upon reaching the nozzle, it mixes with water and is sprayed onto the work surface. The rotor body is connected to the output shaft of the reducer, and the input shaft of the reducer is connected to a power source such as a motor or engine.

[0003] As mentioned above, the sealed cavity formed by the upper and lower sealing plates, the rotor body, and the steel liner is particularly important and is crucial for the normal operation of the machine. The steel liner is made of high-hardness steel, resulting in a long service life. However, the upper and lower sealing plates have three disadvantages: First, even under compression and deformation, they still rotate relative to the steel liner to maintain a seal. Second, because the mixture is pre-mixed concrete, no lubricant or water can be added to the joint between the rubber of the upper and lower sealing plates and the steel liner, otherwise it will solidify; therefore, only dry friction is possible. Third, another disadvantage is that sand and gravel in the mixture can easily cut into the rubber surfaces of the upper and lower sealing plates at the junction of the circular material cavity of the rotor body and the steel liner with the flat rubber surfaces of the upper and lower sealing plates, leaving annular marks and causing cross-contamination between the material cavities, resulting in loss of seal. These factors are the main reasons why the upper and lower sealing plates lose their seal. When air leakage occurs in the upper and lower sealing plates, the pressure on them increases to maintain normal machine operation, further worsening their working conditions and accelerating their wear. The upper and lower sealing plates are composed of upper and lower sealing plates and their rubber components. The rubber components account for 80-90% of the total cost of the upper and lower sealing plates. The total thickness of the rubber components is typically around 30mm. When the rubber wear reaches a depth of approximately 4mm-6mm, the seal is lost, requiring replacement and resulting in very high operating costs for the machinery.

[0004] To improve the service life of the upper and lower sealing plates and reduce equipment operating costs, the rubber used in these plates must possess both a certain degree of hardness and toughness. Excessive hardness results in poor sealing performance and renders the sealing ineffective. Therefore, the current approach aims to maximize the thickness of the rubber in the upper and lower sealing plates while maintaining a suitable hardness. However, due to various limitations imposed by the equipment, this increase in thickness is also limited. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a stamping structure for the sealing plate of a concrete spraying machine, which can increase the hardness and toughness of the sealing plate without changing its external dimensions and without affecting the sealing, while reducing the amount of rubber used, thereby improving its service life and reducing manufacturing costs.

[0006] The objective of this utility model is achieved in the following manner:

[0007] A stamped sealing plate structure for a concrete spraying machine includes a sealing plate, the sealing plate including a sealing base plate, a flexible sealing layer provided on the sealing base plate, a sealing plate boss provided on the sealing base plate, and a corresponding sealing groove provided on the flexible sealing layer to cooperate with the sealing plate boss, the flexible sealing layer wrapping around the sealing plate boss.

[0008] The sealing plate of the above-mentioned concrete spraying machine has a stamped structure, and the flexible sealing layer is a rubber sealing layer.

[0009] The sealing plate stamping structure of the above-mentioned concrete spraying machine includes an upper sealing plate and a lower sealing plate. The upper sealing plate includes an upper sealing plate body, an upper sealing plate boss, an upper sealing plate discharge port, and an upper sealing plate notch located at the upper sealing plate boss away from the upper sealing plate discharge port. An air blowing port is located on the upper sealing plate at the upper sealing plate notch. A flexible sealing layer is wrapped around the upper sealing plate, and an air blowing channel is provided on the upper flexible sealing layer corresponding to the air blowing port. The lower sealing plate includes a lower sealing plate body, a lower sealing plate boss, a lower sealing plate notch located on the lower sealing plate boss, and a lower sealing plate discharge port located at the lower sealing plate notch. A lower flexible sealing layer is wrapped around the lower sealing plate, and a discharge channel is provided on the lower flexible sealing layer corresponding to the lower sealing plate discharge port. The discharge channel and the lower sealing plate discharge port form a material channel.

[0010] Compared with the prior art, the present invention has the following technical effects:

[0011] This invention reduces the amount of rubber used without increasing the external dimensions of the existing upper and lower sealing plates, greatly reducing production costs. It has a simple structure, is easy to implement, and is highly versatile. Furthermore, due to the use of a sealing plate boss structure, it can buffer some of the pressure, increase the hardness of the upper and lower sealing plates, and improve their service life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the lower sealing plate of this utility model.

[0013] Figure 2 yes Figure 1 A sectional view along line AA.

[0014] Figure 3 This is a schematic diagram of the structure of the lower sealing plate of this utility model.

[0015] Figure 4 yes Figure 3 BB-direction sectional view.

[0016] Figure 5 This is a three-dimensional schematic diagram of the lower sealing plate of this utility model.

[0017] Figure 6 This is a schematic diagram of the upper sealing plate of this utility model.

[0018] Figure 7 This is a partial structural diagram of the upper sealing plate of this utility model.

[0019] Figure 8 This is a reference diagram showing the usage state of this utility model.

[0020] The reference numerals in the attached drawings are explained as follows: 1. Mixing material; 2. Hopper; 3. Upper sealing plate; 4. Steel liner; 5. Rotor body; 6. Lower sealing plate; 7. Panel; 8. Upper air inlet; 9. Material chamber; 10. Swirl bend; 11. Lower air inlet; 12. Lower sealing plate body; 13. Lower sealing plate rubber; 14. Lower sealing plate discharge port; 15. Lower sealing plate boss; 16. Lower sealing plate notch; 17. Upper sealing plate body; 18. Upper sealing plate rubber; 19. Upper sealing plate boss; 20. Upper sealing plate discharge port; 21. Air outlet; 22. Upper sealing plate notch. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0025] like Figure 8 As shown, the concrete spraying machine includes a motor-driven rotor 5. Steel liners 4 are fixed above and below the rotor 5, forming a uniform cylindrical material cavity 9 that rotates with the rotor 5. An upper sealing plate 3 is installed below the hopper 2, and a lower sealing plate 6 is installed above the panel 7. A sealed cavity is formed between the upper sealing plate 3, the steel liner 4, the rotor 5, and the lower sealing plate 6. When the mixed material 1 falls into the cylindrical material cavity 9, the hopper 2, the upper sealing plate 3, the lower sealing plate 6, and the panel 7 remain stationary. The rotor 5 and the steel liner 4 rotate the cylindrical material cavity 9, filled with the mixed material 1, to the upper air inlet 8. Here, compressed air from the upper air inlet 8 blows the mixed material 1 into the lower sealing plate discharge port 14, then into the vortex bend 10. Another stream of compressed air is then introduced from the lower air inlet 11 of the vortex bend 10, accelerating the mixed material 1 and propelling it into the conveying pipe to the construction work surface.

[0026] This utility model is an improvement on the upper sealing plate 3 and lower sealing plate 6 of a concrete spraying machine. Specific structural details are combined with... Figure 1-8 The structure of this utility model is described in detail.

[0027] The present invention discloses a stamping structure for a sealing plate of a concrete spraying machine, comprising a sealing plate, the sealing plate including a sealing base plate, a flexible sealing layer provided on the sealing base plate, a sealing plate boss provided on the sealing base plate, and a corresponding sealing groove provided on the flexible sealing layer to cooperate with the sealing plate boss, the flexible sealing layer wrapping around the sealing plate boss.

[0028] The sealing plate stamping structure of the concrete spraying machine of this utility model includes an upper sealing plate 3 and a lower sealing plate 6. The upper sealing plate 3 includes an upper sealing plate body 17, an upper sealing plate boss 19, an upper sealing plate discharge port 20, an upper sealing plate notch 22 at the upper sealing plate boss away from the upper sealing plate discharge port, an air blowing port 21 at the upper sealing plate notch, an upper flexible sealing layer 18 wrapped on the upper sealing plate, and an air blowing channel on the upper flexible sealing layer corresponding to the air blowing port. The lower sealing plate includes a lower sealing plate body 12, a lower sealing plate boss 15, a lower sealing plate notch at the lower sealing plate boss, a lower sealing plate discharge port 14 at the lower sealing plate notch, a lower flexible sealing layer 13 wrapped on the lower sealing plate, and a discharge channel on the lower flexible sealing layer corresponding to the lower sealing plate discharge port, the discharge channel and the lower sealing plate discharge port forming a material channel.

[0029] The upper flexible sealing layer of this utility model is an upper sealing plate rubber layer, and the lower flexible sealing layer is a lower sealing plate rubber layer.

[0030] This utility model is installed on a concrete spraying machine and includes a motor-driven rotor body with a uniform cylindrical material cavity around it. Wear-resistant steel liners are fixed on the upper and lower surfaces of the rotor body. An upper sealing plate is installed below the hopper, and a lower sealing plate is installed on the panel. The upper sealing plate consists of an upper sealing plate body and upper sealing rubber, and the lower sealing plate consists of a lower sealing plate and lower sealing rubber. Sealing plate bosses are stamped on both the upper and lower sealing plates, and then they are placed on a vulcanizing machine for vulcanization treatment to produce the upper and lower sealing plates. The reasons are: 1. The height difference between the sealing plate bosses and the upper and lower sealing plate bodies is small, which can increase the hardness of the rubber layers of the upper and lower sealing plates; 2. When the upper and lower sealing plates are pressed by a large external force, the elasticity of the stamped sealing plate bosses can effectively buffer some of the pressure; 3. It reduces the amount of rubber used and reduces unnecessary rubber waste. The size of its sealing plate boss is smaller than the size of the upper sealing plate rubber layer and the lower sealing plate rubber layer, that is, it is wrapped by the upper sealing plate rubber layer and the lower sealing plate rubber layer.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A stamped structure for a sealing plate of a concrete spraying machine, comprising a sealing plate, characterized in that: The sealing plate includes a sealing base plate, a flexible sealing layer is provided on the sealing base plate, a sealing plate boss is provided on the sealing base plate, and a sealing groove that cooperates with the sealing plate boss is provided on the flexible sealing layer. The flexible sealing layer wraps around the sealing plate boss.

2. The seal plate punch structure of a concrete sprayer according to claim 1, characterized in that: The flexible sealing layer is a rubber sealing layer.

3. The seal plate punch structure of a concrete sprayer according to claim 1, wherein: The sealing plate includes an upper sealing plate (3) and a lower sealing plate (6). The upper sealing plate includes an upper sealing plate body (17), an upper sealing plate boss (19) is provided on the upper sealing plate body, an upper sealing plate discharge port (20) is provided on the upper sealing plate body, an upper sealing plate notch (22) is provided at the upper sealing plate boss away from the upper sealing plate discharge port, and an air blowing port (21) is provided on the upper sealing plate at the upper sealing plate notch. A flexible sealing layer (18) is wrapped on the upper sealing plate (3), and a corresponding upper sealing layer (18) is provided on the air blowing port (21). A blowing channel is provided on the flexible sealing layer; the lower sealing plate includes a lower sealing plate body (12), a lower sealing plate boss (15) is provided on the lower sealing plate body, a lower sealing plate notch (16) is provided on the lower sealing plate boss, a lower sealing plate discharge port (14) is provided at the lower sealing plate notch (16), a lower flexible sealing layer (13) is wrapped on the lower sealing plate (6), and a discharge channel is provided on the lower flexible sealing layer corresponding to the lower sealing plate discharge port (14), and the discharge channel and the lower sealing plate discharge port (14) form a material channel.

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