A distribution plate and a wet spraying machine

Abstract

The first aspect of this application provides a distribution plate, including a mixing chamber, a first inner hole, and a second inner hole. The mixing chamber is disposed within the distribution plate and is used to provide mixing space for an accelerator and compressed air. The first inner hole communicates with the mixing chamber and is used to deliver compressed air into the mixing chamber. There are three second inner holes, one of which is used to deliver the accelerator to the mixing chamber, and the other two are used to connect the mixing chamber to a mixer. The inner diameter of the mixing chamber is larger than the inner diameters of the first and second inner holes. The large space of the mixing chamber provides sufficient mixing space for the compressed air and the accelerator, allowing them to mix thoroughly, reducing the probability of pressure buildup, and thus ensuring the uniformity of the mixing medium and concrete. This ensures the continuity and stability of the concrete head sprayed by the wet shotcrete machine, thereby reducing the concrete drop rate and rebound rate. The second aspect provides a wet shotcrete machine that includes the distribution plate of the first aspect.

Description

Technical Field

[0001] This application relates to the field of wet spraying machine technology, specifically to a distribution plate and a wet spraying machine. Background Technology

[0002] The distribution plate of the wet shotcrete machine is an important component of the spraying section. It is used to mix the accelerator and compressed air in the distribution plate and then transport the mixed medium to the mixer of the nozzle, where it is mixed with the concrete.

[0003] In the prior art, referring to the patent with publication number CN113580369A, the disclosed distribution plate includes an axially arranged first inner hole and a radially arranged second inner hole. The second inner hole is connected to the first inner hole. Compressed air and quick-setting agent enter the interior of the distribution plate through the second inner hole and mix at the junction of the second inner hole and the first inner hole. The resulting mixed medium is transported to the mixer through the first inner hole, and the mixed medium is mixed with the concrete in the mixer for secondary mixing.

[0004] However, in this distribution plate structure, since the accelerator and compressed air are mixed in the space formed by the first inner hole at the center of the distribution plate, the size of this mixing space is small. When the accelerator and compressed air are mixed in this mixing space, a pressure stagnation phenomenon will occur. As a result, after the mixed medium is transported to the mixer, it is not fully mixed with the concrete in the mixer. Consequently, the concrete sprayed from the nozzle has inconsistent head, and the concrete is sometimes intermittent, sometimes misty, and sometimes flocculent, which increases the concrete drop rate and rebound rate.

[0005] Therefore, the distribution plate of the wet spraying machine in the prior art has room for further improvement. Utility Model Content

[0006] In view of this, and addressing the technical problem in the prior art where the mixing space in the distribution plate is small, leading to pressure buildup in the accelerator and compression space, resulting in uneven mixing with concrete, this application provides a distribution plate with a mixing chamber located at the connection between the first inner hole and the second inner hole. The inner diameter of the mixing chamber is larger than the outer diameter of the first and second inner holes, thereby providing sufficient space for the compressed air and accelerator to mix, avoiding pressure buildup, and ensuring that the mixing medium can be evenly mixed with the concrete after entering the mixer, thus guaranteeing the concrete spraying effect of the wet spraying machine.

[0007] First aspect

[0008] This application provides a distribution disk, including:

[0009] The mixing chamber, located within the distribution plate, is used to provide a mixing space for the accelerator and compressed air;

[0010] The first inner hole communicates with the mixing chamber and is used to deliver compressed air into the mixing chamber;

[0011] The second inner hole is connected to the mixing chamber; there are three in total, one of which is used to deliver the quick-setting agent to the mixing chamber, and the other two are used to connect the mixing chamber to the mixer.

[0012] The inner diameter of the mixing chamber is larger than the inner diameters of the first inner hole and the second inner hole.

[0013] Compared with the prior art, the distribution plate of this application is provided with a mixing chamber located at the intersection of the first inner hole and the second inner hole. The first inner hole is used to deliver compressed air into the mixing chamber, and one of the second inner holes delivers an accelerator into the mixing chamber. The compressed air and the accelerator are mixed in the mixing chamber to form a mixing medium, which is then delivered to the mixer through the other two second inner holes to mix with the concrete. In particular, in this application, the inner diameter of the mixing chamber is larger than the inner diameter of the first and second inner holes, so that the space of the mixing chamber is larger, which can provide a large enough mixing space for the compressed air and the accelerator to mix fully, reduce the probability of pressure buildup, and thus ensure the uniformity of the mixing medium and the concrete. This ensures the continuity and stability of the head of the concrete sprayed by the wet spraying machine, thereby reducing the concrete drop rate and rebound rate. In addition, the first inner hole is used to transport compressed air, which is more effective than the first inner hole used in the prior art for transporting the mixing medium. In the prior art, the mixing medium is transported to the mixer through the first inner hole. The transport speed is too fast, which causes the compressed air and the quick-setting agent to enter the mixer too quickly before they are completely mixed, which will further reduce the mixing effect.

[0014] Preferably, the mixing chamber includes:

[0015] The upper cavity has a spherical structure, and its inner diameter is larger than the inner diameters of the first inner hole and the second inner hole.

[0016] The lower cavity is a ring-shaped structure, axially connected to one end of the upper cavity;

[0017] Among them, the three second inner holes are connected to the upper cavity, and the first inner hole is connected to the lower cavity.

[0018] In this embodiment, the mixing chamber consists of two cavities, an upper cavity with a spherical structure and a lower cavity with a ring structure. The inner walls of both cavities are smooth curved surfaces. The second inner hole is connected to the upper cavity, and the lower cavity is connected to the first inner hole. This allows the compressed air and the accelerator to interact with the mixing chamber at different positions, providing sufficient space for the compressed air and the accelerator to circulate and increase the uniformity of their mixing.

[0019] Preferably, the first inner hole is provided along the axial direction of the upper cavity;

[0020] The second inner hole is arranged along the radial direction of the upper cavity, and the three second inner holes are distributed at intervals along the circumference of the upper cavity;

[0021] The upper cavity and the lower cavity are connected by an arc-shaped transition.

[0022] In this embodiment, the first inner hole is used to transport compressed air. It is arranged axially so that the compressed air first rushes to the top of the upper cavity and then flows downward from the top of the upper cavity to the curved surfaces around it. The second inner hole is arranged radially so that when the accelerator enters the mixing chamber, it first acts on the side wall of the upper cavity and then flows towards the top of the upper cavity and the lower cavity respectively. Therefore, the combination of the mixing chamber and the first and second inner holes increases the flow space of the accelerator and compressed air in the mixing chamber, thereby making the two mix more evenly.

[0023] Preferably, the inner diameter of the first inner hole is R1, the inner diameter of the second inner hole is R2, and the inner diameter of the upper cavity is R3, wherein R3>2R1>2R2;

[0024] Along the axial direction, the height of the upper cavity is H1, and the height of the lower cavity is H2, where H1 > 5H2.

[0025] In this embodiment, the radius of the upper cavity is larger than the diameters of the first and second inner holes, which ensures that the mixing chamber has sufficient mixing space to prolong the mixing time of the accelerator and compressed air in the mixing chamber, so that the two are mixed more thoroughly; wherein, the axial length of the upper cavity is much greater than that of the lower cavity, which can provide a larger spherical space and increase the mixing effect.

[0026] Preferably, in the axial direction of the upper cavity, the projections of the first inner hole and the second inner hole do not overlap, the projection of the second inner hole and the lower cavity do not overlap, and the projection of the second inner hole overlaps with a portion of the projection of the upper cavity.

[0027] Along the axial direction, there is an axial distance between the two ends of the second inner hole and the two ends of the mixing chamber.

[0028] In this embodiment, the first inner hole and the second inner hole are offset in the axial direction to avoid direct interference between compressed air and accelerator, which would reduce the mixing effect. The second inner hole and the lower cavity are offset in the axial direction, and the second inner hole and the upper cavity are partially overlapped, which allows the accelerator to act on the side wall of the upper cavity first, so that the accelerator has space to flow up and down, thereby improving the mixing effect.

[0029] Preferably, the lower cavity includes:

[0030] The first end is connected to the upper cavity, and its inner diameter is R4;

[0031] The second end is connected to the first inner hole, and its inner diameter is R5;

[0032] Where R4>R1=R5, R4≤R3;

[0033] Along the axial direction, the inner diameter of the lower cavity gradually decreases in the direction away from the upper cavity.

[0034] In this embodiment, the lower inner diameter of the lower cavity is smaller than the upper inner diameter, which makes the lower cavity tend to converge toward the first inner hole. This ensures that the internal space of the mixing chamber is large enough, while making the inner wall surface of the lower cavity curved, increasing the flow area and mixing time of the quick-setting agent and compressed air, and ensuring the mixing effect.

[0035] Preferred options also include:

[0036] An extension channel is provided between the second inner hole and the mixing chamber to extend the radial length of the second inner hole;

[0037] A connecting thread is provided on the inner sidewall of the second inner hole;

[0038] The end face of the extended channel near the mixing chamber has an elliptical profile.

[0039] In this embodiment, extending the channel can increase the length of the second inner hole and increase the area of ​​the connection between the mixing chamber and the second inner hole, so that the quick-setting agent has sufficient flow space and time, and reduces the probability of noise and pressure build-up during mixing, thereby improving mixing efficiency.

[0040] Preferred options also include:

[0041] A limiting annular groove is provided at the end of the first inner hole away from the mixing chamber, is coaxially arranged with the first inner hole, and is recessed towards the mixing chamber;

[0042] Wherein, the inner diameter of the limiting ring groove is larger than the inner diameter of the first inner hole.

[0043] In this embodiment, the limiting ring groove provides installation space for the compressed air device to ensure the connection stability between the compressed air device and the distribution plate.

[0044] Preferably, the distribution plate is made of any one of the following materials: ordinary carbon steel, high-quality carbon steel, stainless steel, and alloy steel.

[0045] The distribution plate can be either a regular hexagonal structure or a circular structure.

[0046] In this embodiment, the distribution plate is made of carbon steel, which has good tensile strength and fatigue performance; stainless steel gives the distribution plate good corrosion resistance; alloy steel gives the distribution plate good wear resistance and impact resistance; the distribution plate is set as a regular hexagon, and the outer end of the second inner hole is opened in the plane, which can reduce the difficulty of opening the second inner hole, while ensuring the stability of the connection with the mixer and the accelerator device; setting the distribution plate as a circular structure can reduce the manufacturing difficulty of the distribution plate.

[0047] Second aspect

[0048] This application provides a wet spraying machine, including the distribution plate described in any embodiment provided in the first aspect; and further including:

[0049] The mixer, connected to any two of the three second inner holes, is used to mix the mixing medium output from the distribution plate with the concrete;

[0050] A compressed air device, connected to the first inner hole;

[0051] The quick-setting agent device is connected to the remaining one of the three second inner holes.

[0052] In this embodiment, the distribution plate of the wet shotcrete machine has a good mixing effect, which can ensure the uniformity of mixing between the accelerator and the compressed air. This ensures that the medium formed by the mixture of the accelerator and the compressed air is mixed more evenly with the concrete in the mixer, thus ensuring the continuity and stability of the head of the concrete sprayed by the wet shotcrete machine, thereby reducing the concrete drop rate and rebound rate. Attached Figure Description

[0053] Figure 1 This is a top view of the distribution plate provided in one embodiment of this application;

[0054] Figure 2 This is a side view of the distribution panel provided in one embodiment of this application;

[0055] Figure 3 This is a schematic cross-sectional view of a distribution plate provided in one embodiment of this application. Figure 1 ;

[0056] Figure 4 This is a schematic cross-sectional view of a distribution plate provided in one embodiment of this application. Figure 2 ;

[0057] Figure 5 This is a schematic cross-sectional view of a distribution plate provided in one embodiment of this application. Figure 3 .

[0058] Attached label: 1. Distribution plate;

[0059] 11. Mixing chamber; 12. First inner hole; 13. Second inner hole; 14. Extension channel; 15. Limiting ring groove;

[0060] 111. Upper cavity; 112. Lower cavity. Detailed Implementation

[0061] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0062] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0063] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 application 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, the above terms should not be construed as limitations on this application.

[0064] The present application will now be described in further detail with reference to the accompanying drawings, see below. Figures 1 to 5 illustrate.

[0065] First aspect

[0066] This application provides a distribution plate 1, which is applied in a wet spraying machine; such as Figures 1 to 5 As shown, the distribution plate 1 is used to mix the accelerator with compressed air to form a mixing medium, and to transport the mixing medium into the mixer to mix with the concrete, and then spray it out through the spraying mechanism of the wet spraying machine.

[0067] Specifically, such as Figures 1 to 5As shown, the distribution plate 1 has a regular hexagonal structure and a mixing chamber 11 inside. The centerline of the mixing chamber 11 is collinear with the centerline of the distribution plate 1. The distribution plate 1 also has a first inner hole 12 and a second inner hole 13. The first inner hole 12 is arranged along the axial direction of the mixing chamber 11, with its top communicating with the mixing chamber 11 and its bottom opening at the bottom of the distribution plate 1. The first inner hole 12 is used to deliver compressed gas into the mixing chamber 11. There are three second inner holes 13, which are arranged along the mixing chamber. The mixing chamber 11 is arranged radially, with three second inner holes 13 distributed circumferentially along the mixing chamber 11, and the included angle between two adjacent second inner holes 13 is 120 degrees; the inner end of the second inner hole 13 communicates with the mixing chamber 11, and the outer end of the second inner hole 13 opens on the outer side wall of the distribution plate 1; of the three second inner holes 13, one is used to transport the quick-setting agent into the mixing chamber 11 to mix with compressed air, and the other two second inner holes 13 are used to transport the mixture in the mixing chamber 11 to the mixer, so that the mixing medium is mixed with the concrete.

[0068] In this application, such as Figures 3 to 5 As shown, the inner diameter of the mixing chamber 11 is larger than the inner diameters of the first inner hole 12 and the second inner hole 13, thus making the space of the mixing chamber 11 larger. This provides a sufficiently large mixing space for compressed air and accelerator, allowing them to mix fully, reducing the probability of pressure buildup, and ensuring the uniformity of the mixing medium and concrete. This also ensures the continuity and stability of the concrete head sprayed by the wet spraying machine, thereby reducing the concrete drop rate and rebound rate.

[0069] In addition, the first inner hole 12 is used to transport compressed air, which is more effective than the first inner hole 12 in the prior art for transporting the mixing medium. In the prior art, the mixing medium is transported to the mixer through the first inner hole 12. The transport speed is too fast, which causes the compressed air and the quick-setting agent to enter the mixer too quickly before they are completely mixed, which will further reduce the mixing effect.

[0070] In this application, as Figure 2 As shown, the outlet of any one of the second inner holes 13 corresponds to the side wall between the other two second inner holes 13. When the accelerator is transported from the second inner hole 13 to the mixing chamber 11, it will first act on the inner wall of the mixing chamber 11 and will not flow directly into the other two second inner holes 13. This can increase the residence time of the accelerator in the mixing chamber 11, thereby improving the mixing effect.

[0071] Furthermore, the mixing chamber 11 is described in more detail; such as Figures 3 to 5As shown, the mixing chamber 11 includes an upper chamber 111 and a lower chamber 112. The upper chamber 111 has a spherical structure, and the lower chamber 112 has an annular structure. The inner walls of both the upper chamber 111 and the lower chamber 112 are smooth curved surfaces to reduce the obstruction of the flow of compressed air and accelerator, ensuring their smooth flow. The upper axial end of the lower chamber 112 is connected to the upper chamber 111, and the connection between the two is an arc transition to reduce stress concentration. The lower axial end of the lower chamber 112 is connected to the first inner hole 12. The upper chamber 111, the lower chamber 112, and the first inner hole 12 are coaxially arranged. When compressed air enters the mixing chamber 11 from the first inner hole 12, the compressed gas first rushes to the top of the upper chamber 111, and then flows downward from the top of the upper chamber 111 to the surrounding curved surfaces. During this flow process, the noise generated by the compressed air flow can be reduced. The three second inner holes 13 are connected to the upper cavity 111 and are arranged along the radial direction of the upper cavity 111. When the accelerator enters the mixing chamber 11 through the second inner holes 13, it first acts on the side wall of the upper cavity 111 and then flows toward the top of the upper cavity 111 and the lower cavity 112 respectively. Therefore, the combination of the mixing chamber 11 with the first inner hole 12 and the second inner hole 13 increases the flow space of the accelerator and compressed air in the mixing chamber 11, thereby making the two mix more evenly and reducing the noise during mixing and reducing the probability of pressure buildup.

[0072] The inner diameter of the first inner hole 12 is R1, the inner diameter of the second inner hole 13 is R2, and the inner diameter of the upper cavity 111 is R3, wherein R3>2R1>2R2, that is, the radius of the upper cavity 111 is greater than the diameter of the first inner hole 12 and the second inner hole 13, so that the upper cavity 111 has sufficient space to prolong the mixing time of the quick-setting agent and compressed air in the mixing chamber 11, so that the two are mixed more thoroughly.

[0073] like Figures 4 to 5 As shown, the lower cavity 112 includes a first end and a second end. The first end is located above the second end and is connected to the upper cavity 111. Its inner diameter is R4. The second end is connected to the first inner hole 12. Its inner diameter is R5. Wherein, R4>R1=R5, R4≤R3, that is, the maximum inner diameter of the lower cavity 112 is less than or equal to the inner diameter of the upper cavity 111, so that the maximum inner diameter of the mixing cavity 11 is the inner diameter of the upper cavity 111. The inner diameter of the lower end of the lower cavity 112 is the same as the inner diameter of the first inner hole 12, so that the lower cavity 112 has a tendency to converge toward the first inner hole 12. That is, along the axial direction, the inner diameter of the lower cavity 112 gradually decreases toward the direction away from the upper cavity 111, which can ensure that the internal space of the mixing cavity 11 is large enough while also ensuring the structural characteristics of the first inner hole 12.

[0074] In this embodiment, when R4 = R3, the upper cavity 111 has a hemispherical structure; when R4 < R3, the upper cavity 111 is larger than a hemisphere of 1 / 2 sphere.

[0075] Furthermore, as Figures 3 to 4 shown, in the axial direction, the height of the upper cavity 111 is H1, and the height of the lower cavity 112 is H2, where H1 > 5H2, that is, the axial length of the upper cavity 111 is much larger than that of the lower cavity 112, such that the proportion of the upper cavity 111 in the mixing cavity 11 is relatively large, and then the spherical space in the mixing cavity 11 is larger, the flow area of the accelerating agent and the compressed air is larger, the mixing time is longer, and the mixing is more sufficient and uniform.

[0076] As Figures 3 to 4 shown, in the axial direction of the upper cavity 111, the projections of the first inner hole 12 and the second inner hole 13 do not overlap, that is, the first inner hole 12 and the second inner hole 13 are arranged staggeredly in the axial direction to avoid direct interference between the compressed air and the accelerating agent and reduce the mixing effect; the projection of the second inner hole 13 and the lower cavity 112 do not overlap, that is, the second inner hole 13 and the lower cavity 112 are arranged out of alignment in the axial direction; the projection of the second inner hole 13 overlaps with a part of the projection of the upper cavity 111, that is, there is an axial distance between both ends of the second inner hole 13 and both ends of the mixing cavity 11, so that the accelerating agent can first act on the radial side wall of the upper cavity 111, and the accelerating agent can flow upward towards the top of the upper cavity 111 or downward towards the lower cavity 112, so that the accelerating agent has a space for upward and downward flow, and can accelerate the mixing effect of the accelerating agent and the compressed air.

[0077] In an alternative embodiment of the present application, as Figure 4 and as Figure 5 shown, a limiting ring groove 15 is provided at the end of the first inner hole 12 away from the mixing cavity 11. The limiting ring groove 15 is coaxially arranged with the first inner hole 12, is recessed towards the mixing cavity 11, and the inner diameter of the limiting ring groove 15 is larger than the inner diameter of the first inner hole 12; the limiting ring groove 15 provides an installation space for the compressed air device to ensure the connection stability between the compressed air device and the flow distribution plate 1.

[0078] In an alternative embodiment of the present application, the flow distribution plate 1 further includes an extended channel 14. The extended channel 14 is provided between the second inner hole 13 and the mixing cavity 11. The extended channel 14 is used to extend the radial length of the second inner hole 13; and, the end face contour of the extended channel 14 close to the mixing cavity 11 is elliptical, such that the length of the upper end part of the second inner hole 13 is greater than the length of the lower end part, and the area at the connection between the second inner hole 13 and the mixing cavity 11 is increased, so that the accelerating agent has sufficient flow space and time, and the probability of generating noise and pressure buildup during mixing is reduced, and the mixing efficiency is improved.

[0079] As Figures 3 to 5As shown, the inner wall of the second inner hole 13 is provided with connecting threads so that the distribution plate 1 can be detachably connected to the mixer and the quick-setting agent device, ensuring the operational stability of the distribution plate 1.

[0080] In an optional embodiment of this application, the distribution plate 1 can be circular to reduce the manufacturing difficulty of the distribution plate 1.

[0081] When the distribution plate 1 is a regular hexagonal structure, the outer end of the second inner hole 13 is open in the plane, which can reduce the difficulty of opening the second inner hole 13, while ensuring the stability of the connection with the mixer and the accelerator device.

[0082] The distribution plate 1 is made of any one of the following materials: ordinary carbon steel, high-quality carbon steel, stainless steel, or alloy steel. The distribution plate 1 is made of carbon steel, which has good tensile strength and fatigue performance; stainless steel gives the distribution plate 1 good corrosion resistance; and alloy steel gives the distribution plate 1 good wear resistance and impact resistance.

[0083] Second aspect

[0084] This application provides a wet spraying machine, which includes a distribution plate 1 as described in any embodiment of the first aspect, and further includes a mixer, a compressed air device, and a quick-setting agent device. The mixer is connected to any two of the three second inner holes 13 for mixing concrete with the mixing medium output from the distribution plate 1. The compressed air device is connected to a first inner hole 12 for delivering compressed air to a mixing chamber 11. The quick-setting agent device is connected to the remaining one of the three second inner holes 13 for delivering quick-setting agent to the mixing chamber 11.

[0085] In this embodiment, the distribution plate 1 of the wet shotcrete machine has a good mixing effect, which can ensure the uniformity of mixing between the accelerator and the compressed air. This ensures that the medium formed by the mixing of the accelerator and the compressed air is mixed more evenly with the concrete in the mixer, thus ensuring the continuity and stability of the head of the concrete sprayed by the wet shotcrete machine, thereby reducing the concrete drop rate and rebound rate.

[0086] It should be noted that the various embodiments of this application can be arbitrarily combined into new embodiments, provided that the solutions do not conflict and the technical solutions can coexist.

[0087] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A flow distribution plate, characterized in that, include: The mixing chamber (11) is located inside the distribution plate (1) and is used to provide a mixing space for the accelerator and compressed air; The first inner hole (12) is connected to the mixing chamber (11) and is used to deliver compressed air into the mixing chamber (11); The second inner hole (13) is connected to the mixing chamber (11); there are three in total, one of which is used to deliver the quick-setting agent to the mixing chamber (11), and the other two are used to connect the mixing chamber (11) to the mixer. The inner diameter of the mixing chamber (11) is larger than the inner diameters of the first inner hole (12) and the second inner hole (13).

2. The distribution plate according to claim 1, characterized in that, The mixing chamber (11) includes: The upper cavity (111) has a spherical structure, and its inner diameter is larger than the inner diameters of the first inner hole (12) and the second inner hole (13); The lower cavity (112) has a ring structure and is axially connected to one end of the upper cavity (111); Among them, the three second inner holes (13) are connected to the upper cavity (111), and the first inner hole (12) is connected to the lower cavity (112).

3. The distribution plate according to claim 2, characterized in that, The first inner hole (12) is provided along the axial direction of the upper cavity (111); The second inner hole (13) is arranged in the radial direction of the upper cavity (111), and the three second inner holes (13) are distributed circumferentially along the upper cavity (111); The upper cavity (111) and the lower cavity (112) are connected by an arc-shaped transition.

4. The distribution plate according to claim 2, characterized in that, The inner diameter of the first inner hole (12) is R1, the inner diameter of the second inner hole (13) is R2, and the inner diameter of the upper cavity (111) is R3, wherein R3>2R1>2R2; Along the axial direction, the height of the upper cavity (111) is H1, and the height of the lower cavity (112) is H2, where H1>5H2.

5. The distribution plate according to claim 4, characterized in that, In the axial direction of the upper cavity (111), the projections of the first inner hole (12) and the second inner hole (13) do not overlap, the projections of the second inner hole (13) and the lower cavity (112) do not overlap, and the projection of the second inner hole (13) overlaps with a portion of the projection of the upper cavity (111). Along the axial direction, there is an axial distance between the two ends of the second inner hole (13) and the two ends of the mixing chamber (11).

6. The porting disc of claim 2, wherein The lower cavity (112) includes: The first end is connected to the upper cavity (111), and its inner diameter is R4; The second end is connected to the first inner hole (12), and its inner diameter is R5; Where R4>R1=R5, R4≤R3; Along the axial direction, the inner diameter of the lower cavity (112) gradually decreases in the direction away from the upper cavity (111).

7. The porting disc of claim 1, wherein Also includes: An extension channel (14) is provided between the second inner hole (13) and the mixing chamber (11) to extend the radial length of the second inner hole (13); A connecting thread is provided on the inner side wall of the second inner hole (13); The end face profile of the extended channel (14) near the mixing chamber (11) is elliptical.

8. The porting disc of claim 1, wherein, Also includes: The limiting annular groove (15) is provided at one end of the first inner hole (12) away from the mixing chamber (11), is coaxially arranged with the first inner hole (12), and is recessed toward the mixing chamber (11); The inner diameter of the limiting ring groove (15) is larger than the inner diameter of the first inner hole (12).

9. The distribution plate according to claim 1, characterized in that, The distribution plate (1) is made of any one of the following materials: ordinary carbon steel, high-quality carbon steel, stainless steel, or alloy steel. The distribution plate (1) can be either a regular hexagonal structure or a circular structure.

10. A wet sprayer characterized by, Includes the distribution panel as described in any one of claims 1 to 9; further includes: A mixer, connected to any two of the three second inner holes (13), is used to mix the mixing medium output from the distribution plate (1) with the concrete; A compressed air device is connected to the first inner hole (12); The quick-setting agent device is connected to the remaining one of the three second inner holes (13).

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