Anti-clogging nozzle for shotcrete

Abstract

The utility model discloses a kind of shotcrete anti-blocking nozzles, belong to concrete nozzle technical field, comprising: nozzle body, the cavity of being set as conical is set in the nozzle body, the through hole that is set up in the nozzle body is set up on the nozzle body in the side close to spout, the through hole is connected with air injection mechanism by pipeline.The utility model is blocked when nozzle body, gas is sprayed into cavity from along through hole by air injection mechanism, the concrete in cavity is disturbed, to realize the dredging effect of nozzle body, and high-pressure gas can be sprayed by air injection mechanism to disturb concrete during the process of shotcrete, without affecting the normal injection of concrete, realizes the dredging of nozzle body during the process of shotcrete.

Description

Technical Field

[0001] This utility model belongs to the field of concrete nozzle technology, specifically relating to a spray concrete anti-clogging nozzle. Background Technology

[0002] A wet shotcrete machine is a device used for spraying concrete. When spraying concrete, a wet shotcrete machine needs to use a nozzle, which is generally a conical pipe. However, due to the characteristics of concrete, the nozzle diameter is generally set to be small while ensuring the nozzle pressure, which can easily cause blockage.

[0003] Existing technologies, such as the anti-clogging spray pipe for concrete spraying disclosed in CN218438312U, prevent clogging inside the nozzle by squeezing. However, the above solution drives a shaped pusher to move left and right inside the nozzle tube, pushing the concrete towards the nozzle. In a nozzle that is already clogged, it is difficult to squeeze the concrete out of the nozzle, resulting in poor anti-clogging effect and inconvenience for anti-clogging operation during spraying.

[0004] Therefore, it is necessary to propose a sprayed concrete anti-clogging nozzle to solve the above problems. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a sprayed concrete anti-clogging nozzle to solve the problems of poor anti-clogging effect and inconvenience in anti-clogging operation during spraying in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a sprayed concrete anti-clogging nozzle, comprising: a nozzle body, wherein a conical cavity is provided in the nozzle body, and a radial through hole is provided on the nozzle body near the nozzle opening, wherein the through hole is connected to an air jet mechanism through a pipe.

[0007] Furthermore, multiple through holes are provided, and the multiple through holes are arranged circumferentially with the nozzle body axis as the center. The multiple through holes are connected to the same jet mechanism through pipes.

[0008] Furthermore, the axis of the through hole is set at an acute angle to the axis of the nozzle body.

[0009] Furthermore, a one-way ball valve is elastically provided inside the through hole.

[0010] Furthermore, a connecting pipe is fixedly connected inside the through hole, and the one-way ball valve is elastically disposed inside the connecting pipe.

[0011] Furthermore, the connecting pipe is threaded to the inner wall of the through hole.

[0012] Furthermore, the angle between the axis of the through hole and the axis of the nozzle body is 60°.

[0013] The beneficial effects of this utility model are as follows: when the nozzle body is blocked, the gas is injected into the cavity through the through hole by the jetting mechanism to disturb the concrete in the cavity, thereby clearing the nozzle body. Moreover, during the concrete spraying process, the high-pressure gas is sprayed out by the jetting mechanism to disturb the concrete without affecting the normal spraying of concrete, thus clearing the nozzle body during the concrete spraying process.

[0014] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0015] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration: Figure 1 This is a cross-sectional view of the nozzle body according to an embodiment of the present invention.

[0016] The following are labeled in the attached diagram: Nozzle body 1, cavity 101, through hole 102, connecting pipe 2. Detailed Implementation

[0017] like Figure 1 As shown, this utility model provides a sprayed concrete anti-clogging nozzle, including: a nozzle body 1 fixedly connected to a spray gun (not shown in the figure) by bolts, a conical cavity 101 is provided inside the nozzle body 1, and a through hole 102 is provided on the nozzle body 1 near the nozzle opening, the through hole 102 is connected to a jetting mechanism through a pipe.

[0018] In this solution, when the nozzle body 1 is blocked, the gas is injected into the cavity 101 through the through hole 102 by the jetting mechanism to disturb the concrete in the cavity 101, thereby clearing the nozzle body 1. Furthermore, during the concrete spraying process, the jetting mechanism can spray high-pressure gas to disturb the concrete without affecting the normal spraying of the concrete, thus achieving the clearing of the nozzle body during the concrete spraying process.

[0019] In one embodiment of this utility model, multiple through holes 102 are provided, and the multiple through holes 102 are arranged circumferentially with the axis of the nozzle body 1 as the center. The multiple through holes 102 are connected to the same jet mechanism through a pipe.

[0020] In this scheme, multiple through holes 102 are set to improve the ability to disturb the concrete.

[0021] In one embodiment of this utility model, the axis of the through hole 102 is set at an acute angle to the axis of the nozzle body 1.

[0022] In this scheme, the angle between the axis of the through hole 102 and the axis of the nozzle body 1 is 60°. The high-pressure gas is ejected through the through hole 102, and the direction of gas ejection is opposite to the direction of concrete flow to increase the disturbance to the concrete.

[0023] In one embodiment of this utility model, a one-way ball valve (not shown in the figure) is elastically provided inside the through hole 102 to prevent concrete from spraying out along the inside of the through hole 102 during concrete spraying. The use of the one-way ball valve is a conventional technique in the art and will not be described in detail here.

[0024] In one embodiment of this utility model, the through hole 102 is internally threaded with a connecting pipe 2, and the one-way ball valve is elastically disposed inside the connecting pipe 2.

[0025] In this solution, the length of the gas delivery pipeline is increased by setting a connecting pipe 2, which also facilitates the connection between the connecting pipe 2 and the pipeline of the jet mechanism. Furthermore, a one-way ball valve is installed inside the connecting pipe 2 for easy installation and disassembly.

[0026] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A shotcrete anti-clogging nozzle, comprising: The nozzle body is characterized by: a conical cavity within the nozzle body; a radially penetrating through-hole near the nozzle opening; the through-hole being connected to an air jet mechanism via a pipe; multiple through-holes arranged circumferentially around the nozzle body axis; multiple through-holes connected to the same air jet mechanism via pipes; the axis of the through-hole forming an acute angle with the axis of the nozzle body; a one-way ball valve elastically disposed within the through-hole; a connecting pipe fixedly connected within the through-hole; the one-way ball valve elastically disposed within the connecting pipe; the connecting pipe being threadedly connected to the inner wall of the through-hole; the angle between the axis of the through-hole and the axis of the nozzle body being 60°; and the high-pressure gas ejected through the through-hole being ejected in the opposite direction to the flow direction of the concrete.

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