A new type of nozzle for a gunite machine

Abstract

The application provides a new type of nozzle of a shotcrete machine, and belongs to the technical field of shotcrete operation. The nozzle comprises a connecting pipe, a nozzle seat and a nozzle pipe. The connecting pipe and the nozzle seat are communicated through a first connecting flange, and the nozzle seat and the nozzle pipe are communicated through a second connecting flange. A water inlet pipe is arranged on the nozzle seat, a water inlet valve is fixedly installed on the water inlet pipe, a water tank is arranged in the nozzle seat, and a water inlet hole is arranged on the inner wall of the water tank and communicates with the inside. The water inlet hole is arranged to form a water adding cylinder when water is added, the mixing time is prolonged, the mixing space is lengthened, the dry mixture of water, sand and cement is fully contacted and mixed, the small dry cement particles contained in the sprayed concrete material are greatly reduced, the dust is greatly reduced, the rebound material is reduced during spraying, and the strength of the spraying surface is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shotcrete work, in particular to a new type of nozzle of a shotcrete machine. BACKGROUND

[0002] The shotcrete machine is an essential mechanical equipment for roadway shotcrete construction, and its function is to fully mix shotcrete materials such as cement, yellow sand and stone, to form qualified shotcrete materials, and to use high-pressure airflow to spray the shotcrete materials to the roadway surface to form a reinforced surface. In the daily shotcrete construction process, a large amount of dust is generated on site. Through actual observation of the shotcrete operation on site, the root cause of the large amount of dust generated by the shotcrete machine is that the shotcrete materials cannot be effectively wetted, which not only causes the shotcrete material ratio to not fully meet the requirements, reduces the shotcrete quality, and makes the shotcrete operation laborious and time-consuming, but also causes physical damage to the operating personnel. SUMMARY

[0003] In order to make up for the above shortcomings, the present application provides a new type of nozzle of a shotcrete machine.

[0004] The embodiment of the present application provides a new type of nozzle of a shotcrete machine, which comprises a connecting pipe, a nozzle seat and a nozzle pipe, the connecting pipe and the nozzle seat are communicated by a first connecting flange, the nozzle seat and the nozzle pipe are communicated by a second connecting flange, a water inlet pipe is arranged on the nozzle seat in communication, a water inlet valve is fixedly installed on the water inlet pipe, a water tank is arranged in the nozzle seat, a water inlet hole is arranged on the inner wall of the water tank in communication with the inside, first and second shotcrete holes are arranged at the end of the nozzle pipe, a first rotating groove is arranged in the nozzle pipe, an adjusting block is rotatably connected in the first rotating groove, a first flow-through hole corresponding to the first shotcrete hole is arranged on the adjusting block, a second flow-through hole corresponding to the second shotcrete hole is arranged on the adjusting block, a fixing mechanism is arranged between the outer surface of the nozzle pipe and the adjusting block, a groove is arranged on the outer surface of the connecting pipe, a locking mechanism is arranged in the groove, a connecting column is welded to the lower surface of the locking mechanism, a fixing seat is arranged at the bottom end of the connecting column, the connecting column and the fixing seat are rotatably connected, a supporting rod is welded to one side surface of the fixing seat, a force applying block is welded to the outer surface of the connecting column, and a force applying rod is hinged to the force applying block.

[0005] In the implementation process, the water inlet hole is arranged, so that a water adding cylinder is formed when water is added, the mixing time is prolonged, the mixing space is lengthened, the dry mixture of water, sand, gravel and cement is fully contacted and mixed, the small dry cement particles contained in the sprayed concrete material are greatly reduced, the dust is greatly reduced, the rebound material is reduced during spraying, and the strength of the spraying surface is improved; the adjusting block and the fixing mechanism are arranged, the first and second spraying holes are opened or closed by rotating the adjusting block, so that spraying through different spraying holes is facilitated, and the flow of the sprayed mortar is conveniently adjusted; the locking mechanism is arranged, the bracket and the connecting pipe are fixed, the force applying rod is pulled to move the force applying block, the force applying block drives the connecting column to rotate relative to the fixed seat, so that the direction of the nozzle pipe is conveniently changed, and the angle of the sprayed mortar is conveniently adjusted.

[0006] In a specific embodiment, the fixing mechanism includes a plug hole, a plug rod, a protrusion, a spring and a pull ring, the protrusion is welded to the outer surface of the nozzle pipe, the plug rod is in sliding connection with the protrusion, the plug hole is arranged on the outer surface of the adjusting block, and two groups of plug holes are arranged, one end of the plug rod is inserted into the plug hole, one end of the spring is fixedly arranged in the protrusion, the spring is sleeved on the circumference of the plug rod, the other end of the spring is fixedly connected with the outer surface of the plug rod, and the pull ring is welded to the end of the plug rod.

[0007] In the implementation process, the plug rod is pulled out of the plug hole by pulling the pull ring, so that the adjusting block is conveniently rotated, and after the adjusting block is rotated, when the plug rod is rotated to the position of the other group of plug holes, the plug rod is automatically popped into the plug hole by the elastic force of the spring, and the adjusting block is fixed, so that the transformation between the first and second spraying holes is conveniently completed.

[0008] In a specific embodiment, the water inlet hole is arranged in several groups, and the water inlet holes in the several groups are uniformly arranged on the inner wall of the water tank.

[0009] In the implementation process, the water inlet hole is arranged in several groups, and the water inlet holes in the several groups are uniformly arranged on the inner wall of the water tank.

[0010] In a specific embodiment, the first spraying hole is arranged in four groups, and the first spraying holes in the four groups are uniformly arranged at the center of the nozzle pipe.

[0011] In the implementation process, the first shot hole can be used for shotcreting conveniently.

[0012] In a specific embodiment, the second shot hole is arranged in several groups, and the second shot holes in the groups are arranged in a ring shape on the circumference of the nozzle pipe.

[0013] In the implementation process, the second shot hole can be used for shotcreting conveniently.

[0014] In a specific embodiment, a rubber sealing gasket is arranged between the adjusting block and the first rotating groove, and the rubber sealing gasket is fixedly arranged on the inner wall of the first rotating groove.

[0015] In the implementation process, the sealing between the adjusting block and the first rotating groove can be improved.

[0016] In a specific embodiment, the locking mechanism comprises a first locking plate, a second locking plate, a first locking block, a second locking block and a fastening bolt, the first locking plate and the second locking plate are arranged in the groove, one end of the first locking plate and one end of the second locking plate are hinged, the first locking block is welded to the other end of the first locking plate, the second locking block is welded to the other end of the second locking plate, the first locking block and the second locking block are fixedly connected through the fastening bolt, and the connecting column is welded to the lower surface of the first locking plate.

[0017] In the implementation process, the first locking plate and the second locking plate are sleeved with the groove, and then the first locking block and the second locking block are fixed through the fastening bolt, so that the first locking plate and the second locking plate are fixedly connected with the connecting pipe, and the nozzle pipe can be conveniently handled by holding the support for shotcreting, thereby reducing the problem that shotcreting is easy to splash on the human body when the shotcreting head is close to the human body.

[0018] In a specific embodiment, a second rotating groove is arranged in the interior of the fixing seat, a rotating block is welded to the bottom end of the connecting column, and the rotating block is rotatably arranged in the second rotating groove.

[0019] In the implementation process, the connecting column is conveniently rotated through the rotating of the rotating block in the second rotating groove.

[0020] In a specific embodiment, a spherical groove is arranged in the interior of the force applying block, a spherical block is welded to one end of the force applying rod, and the spherical block is rotatably arranged in the spherical groove.

[0021] In the implementation process, the force applying block is conveniently rotated in any direction through the rotation of the spherical block in the spherical groove, so that the force applying rod can apply force to the force applying block.

[0022] In a specific embodiment, the end of the supporting rod is sleeved with a first rubber handle, and the end of the force applying rod is sleeved with a second rubber handle.

[0023] In the above implementation process, the protection effect on the hands can be increased.

[0024] Beneficial effects:

[0025] 1、The water inlet hole is arranged, so that a water adding cylinder can be formed when water is added, the mixing time is prolonged, the mixing space is lengthened, the dry mixture of water, sand, gravel and cement is fully contacted and mixed, the small dry cement particles contained in the sprayed concrete material are greatly reduced, the dust is greatly reduced, the rebound material is reduced during spraying, and the strength of the spraying surface is improved.

[0026] 2、The adjusting block and the fixing mechanism are arranged, the first spraying hole and the second spraying hole can be opened or closed by rotating the adjusting block, so that spraying through different spraying holes is facilitated, and the flow of the sprayed mortar is conveniently adjusted.

[0027] 3、The locking mechanism is arranged, the support and the connecting pipe can be conveniently fixed, the force applying rod is pulled to drive the force applying block to move, the force applying block drives the connecting column to rotate relative to the fixing seat, so that the direction of the nozzle pipe is conveniently changed, and the angle of the sprayed mortar is conveniently adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and other related drawings can also be obtained by those skilled in the art without creative labor.

[0029] Figure 1 is a structural schematic diagram provided by the embodiment of the present application;

[0030] Figure 2 is a structural schematic diagram provided by the embodiment of the present application Figure 1 is a structural sectional view of the nozzle seat and the nozzle pipe part in the embodiment of the present application;

[0031] Figure 3 is a structural schematic diagram provided by the embodiment of the present application Figure 2 is an enlarged view of A in the embodiment of the present application;

[0032] Figure 4 is a structural schematic diagram provided by the embodiment of the present application

[0033] Figure 5Structure diagram of the adjusting block part provided by the embodiment of the present application;

[0034] Figure 6 Structure diagram of the adjusting block part provided by the embodiment of the present application; Figure 1 Structure diagram of the adjusting block part provided by the embodiment of the present application;

[0035] Figure 7 Structure diagram of the adjusting block part provided by the embodiment of the present application;

[0036] In the figure: 1, connecting pipe; 2, nozzle seat; 3, nozzle pipe; 4, first connecting flange; 5, second connecting flange; 6, water inlet pipe; 7, water inlet valve; 8, water tank; 9, water inlet hole; 10, first shotcrete hole; 11, second shotcrete hole; 12, first rotating groove; 13, adjusting block; 14, first flow-through hole; 15, second flow-through hole; 16, fixing mechanism; 161, insertion hole; 162, insertion rod; 163, protruding block; 164, spring; 165, pull ring; 17, recess; 18, locking mechanism; 181, first locking plate; 182, second locking plate; 183, first locking block; 184, second locking block; 185, fastening bolt; 19, connecting column; 20, fixing seat; 21, supporting rod; 22, force applying block; 23, force applying rod; 24, rubber sealing gasket; 25, second rotating groove; 26, rotating block; 27, spherical groove; 28, spherical block; 29, first rubber handle; 30, second rubber handle. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0038] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0040] It should be noted that like reference numerals and characters refer to like elements throughout the following description with like reference numerals in the drawings indicating like elements, and thus, once certain elements are defined in one drawing, further definition and description of such elements in subsequent drawings can be omitted.

[0041] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and thus cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0042] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0043] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0045] Please refer to Figures 1-7The application provides a new type of nozzle of a gunite machine, which comprises a connecting pipe 1, a nozzle seat 2 and a nozzle pipe 3, the connecting pipe 1 is communicated with the nozzle seat 2 through a first connecting flange 4, the nozzle seat 2 is communicated with the nozzle pipe 3 through a second connecting flange 5, a water inlet pipe 6 is arranged on the nozzle seat 2, a water inlet valve 7 is fixedly installed on the water inlet pipe 6, a water tank 8 is arranged in the nozzle seat 2, a water inlet hole 9 is arranged on the inner wall of the water tank 8 and communicated with the inside, a first gunite hole 10 and a second gunite hole 11 are arranged at the end of the nozzle pipe 3, a first rotating groove 12 is arranged in the nozzle pipe 3, an adjusting block 13 is rotatably connected in the first rotating groove 12, a first flow-through hole 14 corresponding to the first gunite hole 10 is arranged on the adjusting block 13, a second flow-through hole 15 corresponding to the second gunite hole 11 is arranged on the adjusting block 13, a fixing mechanism 16 is arranged between the outer surface of the nozzle pipe 3 and the adjusting block 13, a recess 17 is arranged on the outer surface of the connecting pipe 1, a locking mechanism 18 is arranged in the recess 17, a connecting column 19 is welded to the lower surface of the locking mechanism 18, a fixing base 20 is arranged at the bottom end of the connecting column 19, the connecting column 19 is rotatably connected with the fixing base 20, a supporting rod 21 is welded to the surface of the fixing base 20, a force applying block 22 is welded to the outer surface of the connecting column 19, and a force applying rod 23 is hinged to the force applying block 22.

[0046] In the application, the fixing mechanism 16 comprises a socket 161, a plug rod 162, a convex block 163, a spring 164 and a pull ring 165, the convex block 163 is welded to the outer surface of the nozzle pipe 3, the plug rod 162 is slidably connected with the convex block 163, the socket 161 is arranged on the outer surface of the adjusting block 13 and two groups of the socket 161 are arranged, one end of the plug rod 162 is inserted into the socket 161, one end of the spring 164 is fixedly arranged in the inside of the convex block 163, the spring 164 is sleeved on the circumference of the plug rod 162, the other end of the spring 164 is fixedly connected with the outer surface of the plug rod 162, and the pull ring 165 is welded to the end of the plug rod 162; the plug rod 162 is pulled out of the socket 161 by pulling the pull ring 165, so that the adjusting block 13 is conveniently rotated, after the adjusting block 13 is rotated, when the plug rod 162 is rotated to the position of the other group of the socket 161, the plug rod 162 is automatically popped into the socket 161 by the elastic force of the spring 164, the adjusting block 13 is fixed, and the transformation between the first gunite hole 10 and the second gunite hole 11 is conveniently completed.

[0047] In the scheme, the water inlet holes 9 are provided in several groups, and the water inlet holes 9 in the several groups are evenly arranged on the inner wall of the water tank 8; the water inlet holes 9 are evenly distributed in a radial direction on the inner wall of the water tank 8 in 4-6 cross sections, and are a series of small holes staggered by a certain angle, so that a water adding cylinder is formed when water is added, the mixing time is prolonged, the mixing space is lengthened, the dry mixture of water, sand, gravel and cement is fully contacted and mixed, the small particles of dry cement contained in the sprayed concrete material are greatly reduced, the dust is greatly reduced, the rebound material is reduced during spraying, and the strength of the spraying surface is improved.

[0048] In the scheme, in order to facilitate the first shotcrete hole 10 to spray shotcrete, the first shotcrete hole 10 is provided in four groups, and the four groups of first shotcrete holes 10 are evenly arranged at the center of the nozzle pipe 3; when the adjusting block 13 is rotated, the first shotcrete hole 10 is communicated with the first flow-through hole 14, and shotcrete is sprayed from the first shotcrete hole 10, and at this time, the second flow-through hole 15 and the second shotcrete hole 11 are not communicated.

[0049] In the scheme, in order to facilitate the second shotcrete hole 11 to spray shotcrete, the second shotcrete hole 11 is provided in several groups, and the several groups of second shotcrete holes 11 are arranged in a ring shape on the circumference of the nozzle pipe 3; when the adjusting block 13 is rotated, the second shotcrete hole 11 is communicated with the second flow-through hole 15, and shotcrete is sprayed from the second shotcrete hole 11, and at this time, the first flow-through hole 14 and the first shotcrete hole 10 are not communicated.

[0050] In the scheme, in order to increase the sealing property between the adjusting block 13 and the first rotating groove 12, a rubber sealing gasket 24 is arranged between the adjusting block 13 and the first rotating groove 12, and the rubber sealing gasket 24 is fixedly arranged on the inner wall of the first rotating groove 12.

[0051] In the specific arrangement, the locking mechanism 18 comprises a first locking plate 181, a second locking plate 182, a first locking block 183, a second locking block 184 and a fastening bolt 185, the first locking plate 181 and the second locking plate 182 are arranged in the groove 17, one end of the first locking plate 181 and one end of the second locking plate 182 are hinged, the first locking block 183 is welded at the other end of the first locking plate 181, the second locking block 184 is welded at the other end of the second locking plate 182, the first locking block 183 and the second locking block 184 are fixedly connected through the fastening bolt 185, and the connecting column 19 is welded at the lower surface of the first locking plate 181; the first locking plate 181 and the second locking plate 182 are fixedly connected with the connecting pipe 1 by sleeving the first locking plate 181 and the second locking plate 182 on the groove 17 and then fixing the first locking block 183 and the second locking block 184 through the fastening bolt 185, so that the spray head pipe 3 is conveniently handled by holding the support, and the problem that the sprayed material easily splashes on the human body when the spray head is close to the human body is reduced.

[0052] In the specific arrangement, the inside of the fixing seat 20 is provided with a second rotating groove 25, the bottom end of the connecting column 19 is welded with a rotating block 26, and the rotating block 26 is rotatably arranged in the second rotating groove 25; the connecting column 19 is conveniently rotated by rotating the rotating block 26 in the second rotating groove 25.

[0053] In the specific arrangement, the inside of the force applying block 22 is provided with a spherical groove 27, one end of the force applying rod 23 is welded with a spherical block 28, and the spherical block 28 is rotatably arranged in the spherical groove 27; the force applying block 22 is conveniently rotated in any direction by rotating the spherical block 28 in the spherical groove 27, so that the force applying rod 23 applies force to the force applying block 22.

[0054] In the present application, in order to increase the protection effect on the hand, the end of the support rod 21 is fixedly sleeved with a first rubber handle 29, and the end of the force applying rod 23 is fixedly sleeved with a second rubber handle 30.

[0055] The working principle of the new nozzle of the gunite machine is as follows: when the nozzle pipe 3 needs to be connected with the support, the first locking plate 181 and the second locking plate 182 are sleeved on the groove 17, then the first locking block 183 and the second locking block 184 are fixed through the fastening bolt 185, so that the first locking plate 181 and the second locking plate 182 are fixedly connected with the connecting pipe 1, so that the nozzle pipe 3 is conveniently sprayed by holding the support, and the problem that the sprayed gunite is easy to splash on the human body when the nozzle is close to the human body is reduced; the force applying rod 23 is pulled to drive the force applying block 22 to move, the force applying block 22 drives the connecting column 19 to rotate relative to the fixing seat 20, so that the direction of the nozzle pipe 3 is conveniently changed, and the angle of the sprayed gunite is conveniently adjusted; the adjusting block 13 and the fixing mechanism 16 are arranged, the inserting rod 162 is pulled out from the insertion hole 161 by pulling the pull ring 165, so that the adjusting block 13 is conveniently rotated, after the adjusting block 13 is rotated, when the inserting rod 162 is rotated to the position of another set of insertion holes 161, the inserting rod 162 is automatically popped into the insertion hole 161 by the elastic force of the spring 164, the adjusting block 13 is fixed, so that the transformation between the first gunite hole 10 and the second gunite hole 11 is conveniently completed, the first gunite hole 10 and the second gunite hole 11 can be opened or closed, so that the gunite is conveniently sprayed through different gunite holes, and the flow of the gunite is conveniently adjusted.

[0056] The above merely describes the embodiments of the present application, but does not serve to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0057] The above merely describes the embodiments of the present application, but does not serve to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. The above merely describes the embodiments of the present application, but does not serve to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A novel nozzle for a shotcrete machine, characterized in that, The system includes a connecting pipe (1), a nozzle seat (2), and a nozzle tube (3). The connecting pipe (1) is connected to the nozzle seat (2) via a first connecting flange (4), and the nozzle seat (2) is connected to the nozzle tube (3) via a second connecting flange (5). A water inlet pipe (6) is connected to the nozzle seat (2), and a water inlet valve (7) is fixedly installed on the water inlet pipe (6). A water tank (8) is provided inside the nozzle seat (2), and a water inlet hole (9) communicating with the inside is provided on the inner wall of the water tank (8). A first spray hole (10) and a second spray hole (11) are provided at the end of the nozzle tube (3). A first rotating groove (12) is provided inside the nozzle tube (3), and an adjusting block (13) is rotatably connected in the first rotating groove (12). The adjusting block (13) is provided with a valve that communicates with the nozzle. The first flow hole (14) is provided corresponding to the first spray hole (10). The second flow hole (15) corresponding to the second spray hole (11) is provided on the adjusting block (13). A fixing mechanism (16) is provided between the outer surface of the nozzle pipe (3) and the adjusting block (13). A groove (17) is provided on the outer surface of the connecting pipe (1). A locking mechanism (18) is provided in the groove (17). A connecting column (19) is welded to the lower surface of the locking mechanism (18). A fixing seat (20) is provided at the bottom end of the connecting column (19). The connecting column (19) is rotatably connected to the fixing seat (20). A support rod (21) is welded to one side surface of the fixing seat (20). A force-applying block (22) is welded to the outer surface of the connecting column (19). A force-applying rod (23) is hinged on the force-applying block (22).

2. The novel nozzle for a shotcrete machine according to claim 1, characterized in that, The fixing mechanism (16) includes a socket (161), a rod (162), a protrusion (163), a spring (164), and a pull ring (165). The protrusion (163) is welded to the outer surface of the nozzle tube (3). The rod (162) is slidably connected to the protrusion (163). The socket (161) is opened on the outer surface of the adjusting block (13), and there are two sets of the socket (161). One end of the rod (162) is inserted into the socket (161). One end of the spring (164) is fixedly set inside the protrusion (163). The spring (164) is sleeved on the circumference of the rod (162), and the other end of the spring (164) is fixedly connected to the outer surface of the rod (162). The pull ring (165) is welded to the end of the rod (162).

3. The novel nozzle for a shotcrete machine according to claim 1, characterized in that, The water inlet holes (9) are provided in several groups, and the several groups of water inlet holes (9) are evenly opened on the inner wall of the water tank (8).

4. A novel nozzle for a shotcrete machine according to claim 1, characterized in that, The first spray hole (10) is provided in four sets, and the four sets of the first spray hole (10) are evenly arranged at the center of the nozzle pipe (3).

5. A novel nozzle for a shotcrete machine according to claim 1, characterized in that, The second spray hole (11) is provided in several groups, and the several groups of the second spray hole (11) are arranged in a ring on the circumference of the nozzle pipe (3).

6. A novel nozzle for a shotcrete machine according to claim 1, characterized in that, A rubber sealing gasket (24) is provided between the adjusting block (13) and the first rotating groove (12), and the rubber sealing gasket (24) is fixedly provided on the inner wall of the first rotating groove (12).

7. A novel nozzle for a shotcrete machine according to claim 1, characterized in that, The locking mechanism (18) includes a first locking plate (181), a second locking plate (182), a first locking block (183), a second locking block (184), and a fastening bolt (185). The first locking plate (181) and the second locking plate (182) are disposed in the groove (17). One end of the first locking plate (181) and one end of the second locking plate (182) are hinged together. The first locking block (183) is welded to the other end of the first locking plate (181), and the second locking block (184) is welded to the other end of the second locking plate (182). The first locking block (183) and the second locking block (184) are fixedly connected by the fastening bolt (185). The connecting column (19) is welded to the lower surface of the first locking plate (181).

8. A novel nozzle for a shotcrete machine according to claim 1, characterized in that, The fixed base (20) has a second rotating groove (25) inside, and a rotating block (26) is welded to the bottom end of the connecting column (19). The rotating block (26) is rotatably disposed in the second rotating groove (25).

9. A novel nozzle for a shotcrete machine according to claim 1, characterized in that, The force-applying block (22) has a spherical groove (27) inside, and a spherical block (28) is welded to one end of the force-applying rod (23). The spherical block (28) is rotatably disposed in the spherical groove (27).

10. A novel nozzle for a shotcrete machine according to claim 1, characterized in that, The end of the support rod (21) is fixedly sleeved with a first rubber handle (29), and the end of the force-applying rod (23) is fixedly sleeved with a second rubber handle (30).

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