Nozzle assembly and wet spraying machine

Abstract

The utility model relates to the field of concrete spraying operation, and discloses a nozzle assembly and a wet spraying machine. The nozzle assembly comprises a nozzle, one end of the nozzle is open, and the other end of the nozzle is sleeved with a nozzle sleeve to form a communicating cavity. The nozzle assembly further comprises a cleaning device arranged in the communicating cavity, the cleaning device comprises a cleaning mechanism, the cleaning mechanism comprises a rotating shaft and a cleaning piece installed at one end of the rotating shaft, and a plurality of water outlets are formed in the rotating shaft and communicate with an external water source. The driving mechanism is connected with the other end of the rotating shaft and used for driving the rotating shaft to rotate and driving the rotating shaft to move back and forth in the communicating cavity. The wet spraying machine comprises the nozzle assembly. According to the nozzle assembly and the wet spraying machine, the nozzle can be prevented from being blocked, the service life of the nozzle is prolonged, the replacement time and cost are reduced, the construction interruption time is shortened, and the construction efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the field of concrete spraying operations, and in particular, relates to a nozzle assembly and a wet spraying machine. Background Art

[0002] Concrete spraying technology uses a concrete sprayer, using compressed air or other power, to spray concrete onto the surface through a concrete nozzle, causing the concrete to set and harden rapidly. The concrete nozzle is a key structural component of the concrete sprayer, typically consisting of a nozzle body and multiple through-holes arranged along its circumference. The nozzle body has a hollow chamber that connects to the concrete delivery pipe of the concrete sprayer. The through-holes allow compressed air and an accelerator to enter the hollow chamber. The compressed air propels the concrete out of the hollow chamber, while the accelerator primarily accelerates the setting and hardening of the concrete.

[0003] However, when existing concrete nozzles are working, concrete tends to adhere to the inner wall of the nozzle, causing nozzle blockage, affecting spraying efficiency and construction progress. Summary of the Invention

[0004] The purpose of this application is to provide a nozzle assembly and a wet spraying machine to avoid nozzle clogging.

[0005] To achieve the above-mentioned object, the present application provides a nozzle assembly, which includes: a nozzle, one end of the nozzle is open, and the other end is sleeved with a nozzle sleeve to form a communicating cavity;

[0006] The nozzle assembly also includes a cleaning device disposed in the communicating cavity, the cleaning device including:

[0007] The cleaning mechanism includes a rotating shaft and a cleaning member installed at one end of the rotating shaft. The rotating shaft is provided with a plurality of water outlets connected to an external water source.

[0008] The driving mechanism is connected to the other end of the rotating shaft and is used for driving the rotating shaft to rotate and to drive the rotating shaft to move back and forth in the communicating cavity.

[0009] In some embodiments, the driving mechanism includes a telescopic driving member and a rotary driving member, the rotary driving member is used to drive the rotary shaft to rotate, and the telescopic driving member is used to drive the rotary shaft to move back and forth in the communicating cavity.

[0010] In some embodiments, the telescopic drive member is an electric push rod, and / or the rotational drive member is a rotary motor.

[0011] In some embodiments, the nozzle sleeve includes a sleeve body and a mounting portion located in an inner cavity of the sleeve body, the mounting portion is formed with a mounting cavity open forward, and the driving mechanism is accommodated in the mounting cavity.

[0012] In some embodiments, a wire passage is further provided on the peripheral wall of the nozzle sleeve, and the wire passage is connected to the outside of the nozzle sleeve and the installation cavity of the nozzle sleeve.

[0013] In some embodiments, a spray channel connected to the water outlet is provided in the rotating shaft, and a water inlet channel is provided on the peripheral wall of the sleeve body, and the water inlet channel is connected to the outside of the sleeve body and the spray channel.

[0014] In some embodiments, the cleaning element is a blade disposed on a rotating shaft.

[0015] In some embodiments, the blade is made of plastic or rubber.

[0016] On the other hand, the present application protects a wet spraying machine, which includes the above-mentioned nozzle assembly.

[0017] In some embodiments, the wet spraying machine further includes an atomizer and a delivery pipe connected to the feed port of the atomizer, the atomizer is connected to the end of the nozzle sleeve away from the nozzle, and the delivery pipe is provided with a pipeline valve for controlling the on-off of the delivery pipe.

[0018] In the technical solution of this application, the connecting cavity is formed by the inner cavity of the nozzle and the nozzle sleeve. Because a cleaning device capable of cleaning the inner wall of the nozzle is provided in the connecting cavity, after the concrete spraying operation, the cleaning device can clean the inner wall by driving the cleaning element to rotate and reciprocate through a driving mechanism. In addition, the rotating shaft is provided with a plurality of water outlets connected to an external water source. The water flow cooperates with the cleaning element to clean the inner wall, thereby conveniently and promptly cleaning the residual concrete adhering to the inner wall of the nozzle. Therefore, compared with the existing technology, this application can avoid nozzle clogging.

[0019] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without inventive work. In the drawings:

[0021] Figure 1 It is a structural schematic diagram of a nozzle assembly in the prior art;

[0022] Figure 2 It is a structural schematic diagram of a nozzle assembly according to a specific embodiment of the present application.

[0023] Description of Reference Numerals

[0024] 100 atomizer 430 wire channel

[0025] 110 Compressed air port 500 Cleaning mechanism

[0026] 120 Accelerator port 511 Rotating drive

[0027] 200 nozzle 512 telescopic drive

[0028] 300 Conveying pipeline 513 Rotating shaft

[0029] 310 valve 513a spray channel

[0030] 400 Nozzle sleeve 520 Cleaning parts

[0031] 400a sleeve body 530 water inlet channel

[0032] 400b Mounting portion 540 Water outlet

[0033] 510 drive mechanism DETAILED DESCRIPTION

[0034] The following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.

[0035] The nozzle assembly and the wet spraying machine according to the present application will be described below with reference to the accompanying drawings.

[0036] This application discloses a novel nozzle assembly, such as Figure 2 As shown, a nozzle assembly in a specific embodiment includes: a nozzle 200, one end of the nozzle 200 is open, and the other end is sleeved with a nozzle sleeve 400 to form a communicating cavity;

[0037] The nozzle assembly also includes a cleaning device disposed in the communicating cavity, the cleaning device including:

[0038] The cleaning mechanism 500 includes a rotating shaft 513 and a cleaning member 520 mounted at one end of the rotating shaft 513. The rotating shaft 513 is provided with a plurality of water outlets 540, which are connected to an external water source.

[0039] The driving mechanism 510 is connected to the other end of the rotating shaft 513 and is used to drive the rotating shaft 513 to rotate and drive the rotating shaft 513 to move back and forth in the communicating cavity.

[0040] Specifically, see Figure 2The connecting cavity is formed by the inner cavity of the nozzle 200 and the nozzle sleeve 400. Since a cleaning device that can clean the inner wall of the nozzle 200 is provided in the connecting cavity, the cleaning device can be turned on after the spraying operation is completed. The cleaning part 520 can not only clean the inner wall of the nozzle 200 by rotating, but also clean different positions of the inner wall by reciprocating and telescoping the cleaning part 520. In addition, the cleaning part 520 can also improve the cleaning effect by cooperating with the water flow out of the water outlet 540. Therefore, compared with Figure 1 Compared with the prior art shown, the nozzle assembly of the present application can conveniently and timely clean the residual concrete adhering to the inner wall of the nozzle 200, thereby preventing the concrete from solidifying and clogging the nozzle 200.

[0041] Among them, the way the cleaning device cleans the inner wall is not limited to the above-mentioned way of cooperating with the cleaning part 520 and the water flow, but can also be cleaned only through the cleaning part 520 in the form of a brush head, blades, auger, etc., or only through the water outlet 540.

[0042] In this embodiment, if Figure 2 As shown, the driving mechanism 510 includes a telescopic driving member 512 and a rotating driving member 511. The rotating driving member 511 is used to drive the rotating shaft 513 to rotate, and the telescopic driving member 512 is used to drive the rotating shaft 513 to move back and forth in the communicating cavity.

[0043] Specifically, see Figure 2 The rotary drive member 511, the telescopic drive member 512, and the rotating shaft 513 are sequentially connected in a transmission manner. Specifically, the telescopic drive member 512 is mounted on the rotor of the rotary drive member 511, and the rotating shaft 513 is mounted on the telescopic portion of the telescopic drive member 512. The rotary drive member 511 drives the telescopic drive member 512 to rotate, and the telescopic drive member 512 drives the rotating shaft 513 to reciprocate along the axial direction of the telescopic drive member 512, thereby enabling the cleaning member 520 to rotate relative to the inner wall while also reciprocating back and forth. This arrangement provides a simple structure and is easy to manufacture and assemble.

[0044] In this embodiment, the telescopic drive member 512 may be an electric push rod, and / or the rotary drive member 511 may be a rotary motor. Of course, those skilled in the art will appreciate that the telescopic drive member 512 may also be an electric cylinder, a pneumatic cylinder, a hydraulic cylinder, etc., and the rotary drive member 511 may also be a pneumatic motor, a hydraulic motor, etc.

[0045] In this embodiment, if Figure 2 As shown, the nozzle sleeve 400 includes a sleeve body 400a and a mounting portion 400b located in the inner cavity of the sleeve body 400a. The mounting portion 400b is formed with a mounting cavity open forward, and the driving mechanism 510 is accommodated in the mounting cavity.

[0046] Specifically, see Figure 2, the front end of the nozzle sleeve 400 is provided with an annular nozzle sleeve clamping part, the nozzle 200 is inserted into the nozzle sleeve clamping part, and the connection between the nozzle sleeve clamping part and the nozzle 200 is fastened by a pipe clamp. It can be understood by those skilled in the art that the connection method between the nozzle sleeve 400 and the nozzle 200 is not limited to the above-mentioned pipe clamp connection, and can also be a threaded connection, etc. The nozzle sleeve 400 is an integrally formed part, and the rotating motor and the electric push rod are clamped in an installation cavity with an opening toward the nozzle 200. Since the nozzle 200 is a wearing part, such a setting can facilitate the replacement of the nozzle 200 and avoid the replacement operation of the nozzle 200 being interfered with by the design of the cleaning device. After the service life of the nozzle 200 is improved, the replacement time and cost of the nozzle 200 can be greatly reduced, and the construction interruption time can be reduced, thereby improving construction efficiency.

[0047] In this embodiment, if Figure 2 As shown, a spray channel 513a communicating with the water outlet 540 is provided in the rotating shaft 513, and a water inlet channel 530 is provided on the peripheral wall of the sleeve body 400a. The water inlet channel 530 communicates with the outside of the sleeve body 400a and the spray channel 513a.

[0048] Specifically, the rotating shaft 513 may be a hollow tubular structure, and the spray channel 513a may be a hollow cavity of the hollow tube, or the spray channel 513a and the water outlet 540 may be processed on the solid rotating shaft 513 by drilling or other processes.

[0049] In this embodiment, if Figure 2 As shown, a wire passage 430 is further provided on the peripheral wall of the nozzle sleeve 400, which connects the outside of the nozzle sleeve 400 and the installation cavity of the nozzle sleeve 400. This arrangement can facilitate power supply to the rotary motor and the electric push rod, is easy to process, and has a simple structure.

[0050] In this embodiment, if Figure 2 As shown, the cleaning element 520 is a blade disposed on the rotating shaft 513 .

[0051] Specifically, a blade with an arc-shaped end is arranged around the circumference of the rotating shaft 513 , one end of the blade is connected to the rotating shaft 513 , and the other end of the blade is used to scrape and clean the inner wall of the nozzle 200 .

[0052] The nozzle assembly may include a plurality of blade groups that are sequentially spaced apart along the axial direction of the rotating shaft 513 , and each blade group includes a plurality of blades that are spaced apart along the circumferential direction of the rotating shaft 513 .

[0053] Of course, those skilled in the art will appreciate that the cleaning member 520 may also be a brush, and the rotating shaft 513 and the brush together form a cleaning roller, or the cleaning member 520 may also be a flexible scraper, etc.

[0054] In this embodiment, the blade is made of plastic or rubber.

[0055] Specifically, the blades are made of soft polyurethane. The nozzle 200 is susceptible to wear during concrete spraying operations, resulting in a short service life. Therefore, the nozzle 200 can be made of stainless steel to improve its wear resistance. The soft polyurethane blade design prevents scratches on the inner wall of the nozzle 200, further extending its service life.

[0056] The present application discloses a novel wet spraying machine. In a specific embodiment, the wet spraying machine includes the above-mentioned nozzle assembly.

[0057] Among them, the wet spraying machine has all the technical effects brought by the above-mentioned nozzle assembly, which will not be repeated here.

[0058] In this embodiment, if Figure 2 As shown, the wet spraying machine also includes an atomizer 100 and a delivery pipe 300 connected to the feed port of the atomizer 100. The atomizer 100 is connected to the end of the nozzle sleeve 400 away from the nozzle 200. The delivery pipe 300 is provided with a pipe valve 310 for controlling the on-off of the delivery pipe 300.

[0059] Specifically, see Figure 2 The atomizer 100 includes an atomizer body and an atomizer shell weldment. The atomizer shell weldment is covered on the circumference of the atomizer body. In addition, an annular pipe clamp is provided at the front end of the atomizer shell weldment. The nozzle sleeve 400 is sleeved in the pipe clamp, and the connection between the pipe clamp and the nozzle sleeve 400 is fastened by a pipe clamp. A compressed air port 110 and an accelerator port 120 are also provided on both lateral sides of the atomizer shell weldment. Compressed air and accelerator can enter the atomizer body through the compressed air port 110 and the accelerator port 120 respectively. When the embodiment includes the design of the water outlet 540, during the operation of the cleaning device, the pipeline valve 310 can be closed to prevent the water used for cleaning from flowing back into the delivery pipeline 300 due to pressure, thereby ensuring the quality of concrete in the next spraying operation.

[0060] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0061] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

Claims

1. A nozzle assembly, characterized in that: The nozzle assembly comprises: a nozzle (200), one end of the nozzle (200) is open, and the other end is sleeved with a nozzle sleeve (400) to form a communicating cavity; The nozzle assembly further includes a cleaning device disposed in the communicating cavity, the cleaning device including: A cleaning mechanism (500), the cleaning mechanism (500) comprising a rotating shaft (513) and a cleaning member (520) mounted on one end of the rotating shaft (513), the rotating shaft (513) being provided with a plurality of water outlets (540), the water outlets (540) being connected to an external water source; A driving mechanism (510) is connected to the other end of the rotating shaft (513) and is used to drive the rotating shaft (513) to rotate and drive the rotating shaft (513) to move back and forth in the communicating cavity.

2. The nozzle assembly according to claim 1, characterized in that The driving mechanism (510) comprises a telescopic driving member (512) and a rotating driving member (511), wherein the rotating driving member (511) is used to drive the rotating shaft (513) to rotate, and the telescopic driving member (512) is used to drive the rotating shaft (513) to move back and forth in the communicating cavity.

3. The nozzle assembly according to claim 2, characterized in that The telescopic driving member (512) is an electric push rod, and / or the rotating driving member (511) is a rotating motor.

4. The nozzle assembly according to claim 2, characterized in that The nozzle sleeve (400) comprises a sleeve body (400a) and a mounting portion (400b) located in the inner cavity of the sleeve body (400a); the mounting portion (400b) is formed with a mounting cavity open forward, and the driving mechanism (510) is accommodated in the mounting cavity.

5. The nozzle assembly according to claim 4, characterized in that A wire passage (430) is also provided on the peripheral wall of the nozzle sleeve (400), and the wire passage (430) is connected to the outside of the nozzle sleeve (400) and the installation cavity of the nozzle sleeve (400).

6. The nozzle assembly according to claim 4, characterized in that A spray channel (513a) communicating with the water outlet (540) is provided in the rotating shaft (513), and a water inlet channel (530) is provided on the peripheral wall of the sleeve body (400a), wherein the water inlet channel (530) communicates with the outside of the sleeve body (400a) and the spray channel (513a).

7. The nozzle assembly according to any one of claims 1 to 6, characterized in that: The cleaning element (520) is a blade arranged on the rotating shaft (513).

8. The nozzle assembly according to claim 7, characterized in that The blades are made of plastic or rubber.

9. A wet spraying machine, characterized in that: The wet spraying machine comprises the nozzle assembly according to any one of claims 1 to 8.

10. The wet spraying machine according to claim 9, characterized in that: The wet spraying machine further comprises an atomizer (100) and a delivery pipe (300) connected to a feed port of the atomizer (100); the atomizer (100) is connected to an end of the nozzle sleeve (400) away from the nozzle (200); and the delivery pipe (300) is provided with a pipe valve (310) for controlling the on / off of the delivery pipe (300).

Images