CN114100887A - Nozzle, mortar spraying assembly with same and mortar spraying equipment - Google Patents

Abstract

The invention discloses a nozzle, a guniting assembly with the nozzle and mortar spraying equipment with the nozzle, wherein the nozzle comprises: the nozzle comprises a nozzle body, wherein a guniting channel extending along the axial direction is formed in the middle of the nozzle body, and the guniting channel comprises a guniting end and a guniting end; the peripheral wall of the nozzle body is provided with an air injection hole communicated with the guniting channel; the jet orifice extends along the radial inward inclination of the guniting channel in the guniting direction of the guniting channel, the intersection point of the extension line of the central line of the jet orifice and the axial central line of the guniting channel is positioned on the inner side of the guniting end, and the intersection point of the extension line of the central line of the jet orifice and the bus of the guniting channel is positioned on the outer side of the guniting end. According to the nozzle provided by the embodiment of the invention, the mortar can be sprayed out in a fan shape by the gas, the spraying area of the mortar is increased, the spraying operation efficiency of the mortar is improved, and meanwhile, the mortar is sprayed smoothly and the atomization effect is good.

Description

Nozzle, mortar spraying assembly with same and mortar spraying equipment

Technical Field

The invention relates to the technical field of mortar spraying equipment, in particular to a nozzle, a mortar spraying assembly with the nozzle and mortar spraying equipment.

Background

In the related technology, the mortar spraying is carried out manually, the labor efficiency is low, the labor intensity is high, and the defects of hollowing and the like on the surface of a building can occur in manual operation. The mechanical spraying construction of mortar is carried out by using a mortar spraying machine used in a building site, and a plurality of mortar spraying guns on the market have the conditions of poor atomization, uneven spraying, small spraying area and low operation efficiency when in operation.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a nozzle, which can eject the mortar in a fan shape by using gas, thereby increasing the spraying area of the mortar and the spraying efficiency of the mortar, and meanwhile, the mortar is sprayed smoothly and the atomization effect is good.

Another object of the invention is to provide a guniting assembly with the gunning set of the above embodiment.

Still another object of the present invention is to provide a mortar spraying apparatus having the mortar spraying assembly of the above embodiment.

A nozzle according to an embodiment of the invention, comprising: the nozzle comprises a nozzle body, wherein a guniting channel extending along the axial direction is formed in the middle of the nozzle body, and the guniting channel comprises a guniting end and a guniting end; the peripheral wall of the nozzle body is provided with an air injection hole communicated with the guniting channel; the gas injection holes are obliquely extended inwards along the radial direction of the guniting channel in the guniting direction of the guniting channel; the intersection point of the extension line of the central line of the jet hole and the axial central line of the guniting channel is positioned on the inner side of the guniting end, and the intersection point of the extension line of the central line of the jet hole and the bus of the guniting channel is positioned on the outer side of the guniting end.

According to the nozzle provided by the embodiment of the invention, the intersection point of the extension line of the center of the air injection hole and the extension line of the center line of the air injection hole and the center line of the guniting channel is positioned on the inner side of the grout outlet end, so that mortar in the guniting channel can be sufficiently atomized, and the intersection point of the extension line of the center line of the air injection hole and the generatrix of the guniting channel is positioned on the outer side of the grout outlet end, so that atomized mortar cannot be blocked and accumulated on the grout outlet end. After the mortar and the mortar are matched, the mortar is continuously sprayed out in a fan shape from the mortar outlet end, the spraying area of the mortar is effectively enlarged, and the spraying frequency is reduced. The sprayed mortar is arc-shaped on the wall surface, namely the middle is high and the two sides are low, so that overlapped parts are formed in the two spraying processes, for example, the mortar in the upper line is overlapped with the mortar in the lower line, and the wave trough parts are overlapped, so that the mortar is sprayed on the wall surface very smoothly, and the mortar spraying quality is ensured.

In addition, the nozzle according to the invention may also have the following additional technical features:

in some embodiments of the present invention, the gas orifice centerline is at an angle in the range of 40 degrees to 50 degrees from the axial centerline of the guniting channel.

In some embodiments of the present invention, the nozzle body is formed by connecting a straight pipe section and a frustum section, the straight pipe section is located on one side of the grout outlet end, the frustum section is located on one side of the grout inlet end, the outer diameter of the frustum section close to one side end face of the straight pipe section is larger than that of the straight pipe section, the outer diameter of the frustum section close to one side end face of the straight pipe section is larger than that of the frustum section far away from one side end face of the straight pipe section, and the air inlet end of the air injection hole is formed on the frustum section.

A guniting assembly according to an embodiment of the invention comprises: the nozzle of the above embodiment; the gunjet is connected with the slurry inlet end of the nozzle body, and a gun barrel passage communicated with the slurry spraying passage is arranged in the gunjet; the jet pipe is installed on the spray gun and extends into the guniting channel, and the end part of the jet pipe is located behind the intersection point of the inner wall of the guniting channel of the central line of the jet hole.

According to the mortar spraying assembly provided by the embodiment of the invention, the airflow sprayed by the air spraying holes can generate negative pressure near the mortar outlet end of the nozzle, so that mortar flows back to the mortar outlet end of the nozzle, and the subsequent spraying of the mortar is prevented. The airflow ejected by the air ejector pipe can resist the airflow generated by the negative pressure, prevent the backflow of the mortar after being ejected, and ensure the continuous ejection of the mortar.

In some embodiments of the invention, the gas injection end of the gas injection pipe is located behind the intersection point of the centerline of the gas injection hole and the inner wall of the guniting channel.

In some embodiments of the invention, the spray gun and the nozzle body are connected by a nozzle joint sleeved on the periphery, a transition cavity is formed among the spray gun, the nozzle body and the nozzle joint, an air inlet channel is arranged on the peripheral wall of the spray gun, the air inlet channel and the air injection hole are both communicated with the transition cavity, and an air inlet joint is arranged at the air inlet end of the air inlet channel.

In some embodiments of the invention, the nozzle joint is in a sleeve shape, one end of the nozzle joint is provided with an inward-turned circular ring part, the circular ring part abuts against a stepped end face on the periphery of the nozzle body, and the other end of the nozzle joint is in threaded connection with the spray gun; one end of the nozzle body extends into the gun barrel channel of the spray gun, and a guide inclined plane is arranged at one end of the nozzle body extending into the gun barrel channel.

In some embodiments of the invention, the lance has a bend portion on which the gas lance is mounted, the gas lance passing through the barrel passage and extending into the guniting passage.

In some embodiments of the invention, the lance comprises: a bend defining a bend passage therein, the bend passage adapted to receive external slurry, the bend portion disposed on the bend; the one end of straight tube with the nozzle can be dismantled and be connected, the other end with the return bend can be dismantled and be connected, inject the straight tube passageway in the straight tube, the return bend passageway the straight tube passageway with the whitewashing passageway communicates in proper order, the straight tube is close to the periphery of return bend one side is equipped with external flange.

According to the embodiment of the invention, the mortar spraying equipment comprises: the guniting assembly of the above embodiment; the storage bin is connected with the spray gun through a mortar pipe; and the air bag is communicated with the air injection pipe and the air injection hole through an air pipe.

According to the mortar spraying equipment provided by the embodiment of the invention, the high-efficiency spraying operation of the mortar can be realized through the mortar spraying assembly provided by the embodiment of the invention, the mortar can be sprayed out through the nozzle of the mortar spraying assembly and then distributed in a fan shape, the spraying area of the mortar is effectively increased, and the spraying efficiency of the mortar is improved. And gas is simultaneously input through the gas ejector pipe and the gas ejector holes to provide driving force for mortar, so that the backflow of the mortar is prevented while the spraying of the mortar is ensured. The long-time operation of mortar can be realized through the cooperation of the mortar spraying assembly, the stock bin and the air bag, and the working efficiency of mortar spraying equipment is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic perspective view of a guniting assembly according to an embodiment of the invention;

FIG. 2 is a side view of a guniting assembly according to an embodiment of the invention;

FIG. 3 is a rear view of a guniting assembly according to an embodiment of the invention;

FIG. 4 is a side cross-sectional view of a guniting assembly according to an embodiment of the invention;

FIG. 5 is an enlarged view at C of FIG. 4;

fig. 6 is a schematic side view of a guniting assembly according to an embodiment of the invention.

Reference numerals:

a guniting assembly 100;

a nozzle 1; a nozzle body 11; a guniting channel 111; a pulp inlet end 1111; a slurry outlet end 1112; gas injection holes 1113; a straight tube section 112; a frustum section 113; a top portion 1131; a bottom surface 1132; a guide ramp 1133;

a spray gun 2; a straight tube 21; a straight tube channel 211; a gas injection passage 212; an elbow 22; an elbow channel 221; an external connection flange 23; a barrel passage 30;

a gas lance 3; a nozzle joint 4; the circular ring portion 41;

a transition chamber 5;

a wall surface 10; an air inlet connection 20.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A nozzle and a guniting assembly 100 having the same according to an embodiment of the present invention will be described below with reference to fig. 1 to 6.

A nozzle 1 according to an embodiment of the present invention, as shown in fig. 1 to 6, includes a nozzle body 11, a guniting passage 111 extending in an axial direction is formed in a middle portion of the nozzle body 11, and the guniting passage 111 includes a guniting end 1111 and a guniting end 1112. The peripheral wall of the nozzle body 11 is provided with gas injection holes 1113 communicating with the slurry injection passage 111. The guniting channel 111 in the nozzle body 11 can enable mortar to enter the guniting channel 111 from the mortar inlet end 1111 and flow out from the mortar outlet end 1112. The nozzle body 11 has gas injection holes 1113 on the peripheral wall, and the externally supplied gas passes through the gas injection holes 1113 to guide the mortar to be sprayed out from the nozzle 1, thereby realizing the spraying of the mortar on the wall surface 10.

As shown in fig. 4 and 5, the gas injection holes 1113 extend obliquely inward in the radial direction of the gunning channel 111 in the direction of slurry discharge from the gunning channel 111.

Specifically, as shown in fig. 4 and 5, the slurry inlet end 1111 of the slurry spraying channel 111 can allow the slurry to enter the nozzle body 11, and the slurry outlet end 1112 can allow the slurry to be sprayed. As can be seen from fig. 4, the gas injection holes 1113 provided in the nozzle body 11 are obliquely arranged, and the oblique direction of the gas injection holes 1113 is obliquely extended toward the inner portion of the slurry spraying passage 111 along the radial direction of the slurry outlet end 1112, i.e., the gas injection holes 1113 are obliquely arranged toward the slurry outlet end 1112. The mortar is atomized by the externally supplied gas, and negative pressure is generated when the gas flow is ejected from the nozzle 1, so that the mortar can be guided to be ejected from the mortar outlet end 1112 in a fan shape.

Further, as shown in fig. 4, the intersection of the extension line of the centerline of the gas injection hole 1113 and the axial centerline of the slurry discharge passage 111 is located inside the slurry outlet end 1112. An extension of the center line of the gas injection hole 1113, such as the line L1 in fig. 4, is directed toward the slurry outlet end 1112 of the slurry spraying passage 111 along the direction of the gas injection hole 1113, i.e., is also inclined toward the slurry outlet end 1112. The axial center line of the gunning channel 111, such as the line L2 in fig. 4, is arranged in the direction of the gunning channel 111, i.e. transversely.

It can be seen that when the axial center line L2 of the gunite passage 111 intersects the extension line L1 of the center line of the air injection holes 1113, the intersection point thereof is located inside the gunite passage 111, i.e., at the point a shown in fig. 4. Further, when the mortar enters the mortar spraying duct 111 and is then discharged from the mortar outlet port 1112, the gas entering the mortar spraying duct 111 through the gas injection holes 1113 mixes with the mortar to atomize the mortar sufficiently, and the mortar is discharged from the mortar outlet port 1112. Due to the guiding effect of the gas, when the mortar is sprayed out from the mortar outlet end 1112, the mortar is sprayed out in a sector shape, the spraying area of the mortar is effectively increased, and the working efficiency is improved. Meanwhile, the mortar is sprayed out in a fan-shaped mode, even after the mortar is sprayed on the wall surface 10 for the first time, the spraying of the mortar on the wall surface 10 for the second time is overlapped with the spraying of the mortar on the wall surface 10 for the first time, and due to the fact that the wave trough portions are overlapped, the mortar spraying of the nozzle 1 on the wall surface 10 can be guaranteed to be flat.

Furthermore, the intersection point of the extension line of the central line of the gas injection hole 1113 and the generatrix of the guniting channel 111 is positioned outside the guniting end 1112. That is, the extension line of the central line of the gas injection hole 1113 does not intersect with the inner wall of the guniting passage 111, or the extension line of the central line of the gas injection hole 1113 does not intersect with the nozzle body 11. The boundary end point of the centerline of the gas injection hole 1113 and the extension line of the centerline of the gas injection hole 1113 does not belong to the extension line of the centerline of the gas injection hole 1113, that is, the intersection point of the extension line of the centerline of the gas injection hole 1113 and the generatrix of the guniting passage 111 is located on the side of the guniting passage 111 away from the gas injection hole 1113 in the radial direction.

Specifically, an extension line of the center line of the air injection hole 1113 is, for example, a line L1 shown in fig. 4, a generatrix of the guniting channel 111 is, for example, a line L3 shown in fig. 4, and an intersection point of an extension line L1 of the center line of the air injection hole 1113 and the generatrix L3 of the guniting channel 111 is, for example, a point B shown in fig. 4, outside the guniting channel 111, so as to avoid that the jetted air flow is obstructed by the grout outlet end 1112 of the nozzle 1, resulting in the accumulation of the grout at the grout outlet end 1112.

According to the nozzle 1 of the embodiment of the invention, the intersection point of the extension line of the center of the air injection hole 1113 and the extension line of the center line of the air injection hole 1113 and the center line of the guniting channel 111 is positioned at the inner side of the guniting end 1112, so that mortar in the guniting channel 111 can be sufficiently atomized, and the intersection point of the extension line of the center line of the air injection hole 1113 and the generatrix of the guniting channel 111 is positioned at the outer side of the guniting end 1112, so that atomized mortar is not blocked and accumulated at the guniting end 1112. After the mortar and the mortar are matched, the mortar is continuously sprayed out of the mortar outlet end 1112 in a fan shape, the spraying area of the mortar is effectively enlarged, and the spraying frequency is reduced. The sprayed mortar is arc-shaped on the wall surface 10, namely the middle is high and the two sides are low, so that overlapped parts are formed in the two spraying processes, for example, the mortar in the upper line is overlapped with the mortar in the lower line, and the wave trough parts are overlapped, so that the mortar is sprayed on the wall surface 10 very smoothly, and the mortar spraying quality is ensured.

In one embodiment of the invention, at least three, and more than three gas injection holes 1113 are circumferentially spaced around the centerline of the gunning channel 111. That is to say, three or more air injection holes 1113 are formed in the peripheral wall of the nozzle body 11, and the three or more air injection holes 1113 are circumferentially spaced around the center line of the mortar spraying channel 111, so that, as can be seen from fig. 4, under the cooperation of the three or more air injection holes 1113, air can eject mortar in a fan shape from the mortar outlet end 1112 on each longitudinal section of the nozzle 1, thereby enlarging the spraying area of the mortar and effectively improving the working efficiency of mortar spraying.

As shown in fig. 4 and 5, the mortar spraying channel 111 is a linear channel, thereby facilitating mortar spraying, facilitating control of mortar spraying direction, and ensuring mortar spraying quality.

As shown in FIG. 5, the angle between the centerline of the gas injection holes 1113 and the axial centerline of the guniting channel 111 is in the range of 40 to 50 degrees. That is, the central line of the gas injection hole 1113 and the axial central line of the guniting channel 111 form an included angle, such as the angle α shown in fig. 5, wherein the angle α ranges from 40 degrees to 50 degrees, so that the gas injected through the gas injection hole 1113 guides the mortar to be injected in a fan shape from the mortar outlet end 1112, the spraying range is expanded, and the spraying work efficiency is improved. Meanwhile, if the angle α is too large, the negative pressure area increases, which causes the mortar to easily flow back to the mortar outlet end 1112, so that the mortar is blocked at the mortar outlet end 1112; if the angle of the angle alpha is too small, the mortar is basically sprayed in a columnar shape, the mortar spraying area is small, and the mortar spraying efficiency is further influenced.

As shown in fig. 4 and 5, the nozzle body 11 is formed by connecting a straight pipe section 112 and a frustum section 113, the straight pipe section 112 is located on the side of the grout outlet end 1112, the frustum section 113 is located on the side of the grout inlet end 1111, the outer diameter of the end surface of the frustum section 113 close to one side of the straight pipe section 112 is larger than that of the straight pipe section 112, the end surface of the frustum section 113 close to one side of the straight pipe section 112 is a step end surface of the periphery of the nozzle body, the outer diameter of the end surface of the frustum section 113 close to one side of the straight pipe section 112 is larger than that of the end surface far away from one side of the straight pipe section 112, and the air inlet end of the air injection hole 1113 is formed on the frustum section 113. Form on frustum section 113 through the air inlet end with fumarole 1113, increased fumarole 1113's length, and then increased fumarole 1113's drainage effect for fumarole 1113 blowout air current is basically along fumarole 1113's axial direction blowout, is fan-shaped blowout in order to guarantee that nozzle 1 mortar.

A guniting assembly 100 according to an embodiment of the invention, comprising: the nozzle 1, the spray gun 2 and the gas ejector 3 of the embodiment, the slurry inlet end 1111 of the nozzle body 11 is connected with the spray gun 2, the gun tube channel 30 communicated with the slurry spraying channel 111 is arranged in the spray gun 2, the gas ejector 3 is arranged on the spray gun 2, and the gas ejector 3 extends into the slurry spraying channel 111.

Specifically, as shown in fig. 1 to 6, the spray gun 2 of the guniting assembly 100 can make the mortar enter the guniting channel 111 from the mortar inlet end 1111 of the nozzle body 11, and the gas injection pipe 3 also extends into the guniting channel 111, so that after the mortar enters the guniting channel 111, the gas in the gas injection pipe 3 can enter the guniting channel 111.

According to the slurry spraying assembly 100 of the embodiment of the invention, the airflow sprayed from the air spraying holes 1113 generates a negative pressure near the slurry outlet end 1112 of the nozzle 1, so that the slurry flows back to the slurry outlet end 1112 of the nozzle 1, thereby preventing the subsequent spraying of the slurry. The airflow ejected by the air ejecting pipe 3 can resist the airflow generated by the negative pressure, prevent the backflow of the mortar after being ejected and ensure the continuous ejection of the mortar.

Further, as shown in FIG. 5, the gas injection end of the gas injection pipe 3 is located rearward of the intersection of the centerline of the gas injection hole 1113 and the inner wall of the slurry spraying passage 111. Specifically, the gas injection end of the gas injection pipe 3 is an end extending into the slurry spraying passage 111. The arrangement can reduce the disturbance of the airflow jetted out of the air jet holes 1113, and further change the flowing direction of the airflow jetted out of the air jet holes 1113, and the area of the last single spraying is reduced.

Further, as shown in fig. 1, fig. 2, fig. 4, fig. 5 and fig. 6, the spray gun 2 and the nozzle body 11 are connected by the nozzle joint 4 which is sleeved on the periphery, a transition cavity 5 is formed among the spray gun 2, the nozzle body 11 and the nozzle joint 4, an air inlet channel 212 is arranged on the peripheral wall of the spray gun 2, the air inlet channel 212 and the air injection hole 1113 are both communicated with the transition cavity 5, and an air inlet joint 20 is arranged at the air inlet end of the air inlet channel 212.

As shown in fig. 5, the spray gun 2 is detachably connected to the nozzle 1 through the nozzle joint 4, so that the nozzle 1 can be detached from the spray gun 2 to clean the interior of the nozzle 1 or replace the nozzle 1.

Meanwhile, after assembly between the nozzle 1, the spray gun 2 and the nozzle adapter 4, a space, i.e., a transition chamber 5, is formed between the spray gun 2, the nozzle 1 and the nozzle adapter 4. Specifically, the outer peripheral surface of the frustum section 113 of the nozzle 1 is an inclined surface, and the outer peripheral surface of the frustum section 113, the inner wall of the nozzle adapter 4 and the end of the lance 2 form a transition chamber 5. The air inlet end of the air injection hole 1113 is opened and communicated with the transition cavity 5. And the gas inlet channel 212 arranged on the spray gun 2 can enable external gas to enter and pass through the transition cavity 5 to enter the inner part of the gas injection hole 1113, and then the gas is ejected from the gas injection hole 1113.

As shown in fig. 4, an intake adapter 20 is provided at one end of the intake passage 212, that is, the intake end of the intake passage 212, and the intake adapter 20 can be made to communicate with an external gas supply device and introduce gas into the interior of the intake passage 212. In addition, the air inlet passage 212 is provided on the spray gun 2, and the air inlet joint 20 is provided at the air inlet end of the air inlet passage 212, whereby the air inlet joint 20 does not need to be detached when replacing the nozzle 1, facilitating the replacement of the nozzle 1.

In the guniting assembly 100 according to the embodiment of the invention, as shown in fig. 5, the nozzle fitting 4 is in a sleeve shape, and one end of the nozzle fitting 4 is provided with an inwardly turned annular portion 41, that is, the end where the nozzle fitting 4 is connected with the straight pipe section 112. The annular portion 41 abuts against a stepped end surface of the outer periphery of the nozzle body 11, and the other end of the nozzle joint 4 is screwed to the spray gun 2.

That is, one end of the nozzle joint 4 is the annular portion 41, and a through hole is provided in the middle of the annular portion 41, and the straight pipe section 112 of the nozzle 1 can pass through the annular portion 41 through the through hole. Since the radial dimension of the end of the nozzle 1 where the frustum section 113 and the straight tube section 112 are connected is larger than the radial dimension of the straight tube section 112, when the straight tube section 112 of the nozzle 1 passes through the annular portion 41 of the nozzle joint 4, the nozzle 1 and the nozzle joint 4 can be connected, and the position of the nozzle 1 can be stably restricted by abutting the end of the frustum section 113 and the straight tube section 112 against the annular portion 41.

And, the other end of the nozzle joint 4 is connected with the spray gun 2 by screw thread, thus being convenient for the disassembly and the replacement between the nozzle joint 4 and the spray gun 2, also being convenient for the nozzle 1 to be damaged and replaced or cleaned, and realizing the replacement and the cleaning of the nozzle 1 by quickly disassembling the nozzle joint 4.

As shown in fig. 5, one end of the nozzle body 11 extends into the barrel passage 30 of the spray gun 2.

Specifically, after the nozzle 1 is connected with the spray gun 2 through the nozzle joint 4, one end of the frustum section 113 connected with the straight pipe section 112 abuts against the annular part 41 of the nozzle joint 4, and the other end of the frustum section 113, namely, one end far away from the straight pipe section 112, extends into the barrel passage 30 of the spray gun 2, so that mortar sprayed by the spray gun 2 can enter the nozzle 1, and the mortar is prevented from leaking and flowing into the transition cavity 5 to affect the use of the nozzle assembly 100.

Further, one end of the nozzle body 11 extending into the barrel passage 30 is provided with a guiding inclined surface 1133, that is, as shown in fig. 5, the guniting passage 111 of the nozzle 1 passes through the inside of the frustum section 113 and the straight pipe section 112, one end of the guniting end 1111 of the guniting passage 111 near the connection between the frustum section 113 and the barrel passage 30 is provided with a guiding inclined surface 1133, and the guiding inclined surface makes the inner diameter size of the guniting end 1111 smaller than the inner diameter size of the barrel passage 30, so that at the moment mortar flows through the guniting end 113 from the barrel passage 30, the mortar is suddenly changed due to the inner diameter sizes of the barrel passage 30 and the guniting end 113, the flowing of the mortar is blocked, the flowing direction of the mortar is changed, and the atomization effect of the air injection hole 1113 is further affected.

As shown in fig. 4, the lance 2 has a bent portion on which the gas lance 3 is mounted, and the gas lance 3 is inserted into the lance tube passage 30 and extends into the gunite passage 111.

Specifically, have the kink on the spray gun 2, the kink makes into thick liquid direction and installation direction crossing, not only provides the installation basis for jet-propelled pipe 3, makes the installation that jet-propelled pipe 3 can be stable, does not influence the inflow of mortar yet simultaneously.

As shown in fig. 4, the gas lance 3 is inserted into the lance tube passage 30 and extends into the gunite passage 111. The gas-jet tube 3 penetrates through the rear part of the bending part and sequentially passes through the gun-barrel channel 30 and the guniting channel 111, and finally the one end of the gas-jet tube 3 is positioned inside the guniting channel 111, so that gas can be sprayed out through the gas-jet tube 3, the slurry is prevented from flowing back after being sprayed out from the slurry outlet end 1112, and meanwhile, the flowing of the slurry in the gun-barrel channel 30 and the guniting channel 111 is not influenced, the whole structure is compact, and the layout is reasonable.

As shown in fig. 1, 2 and 3, the spray gun 2 includes: a straight tube 21 and a bent tube 22. An elbow passage 221 is defined within the elbow 22, the elbow passage 221 being adapted to receive the external slurry, and the bend being disposed on the elbow 22. That is, the bent portion, i.e., the portion bent over the elbow channel 221. One end of the straight pipe 21 is detachably connected with the nozzle 1, the other end of the straight pipe is detachably connected with the bent pipe 22, a straight pipe channel 211 is defined in the straight pipe 21, the bent pipe channel 221, the straight pipe channel 211 and the guniting channel 111 are sequentially communicated, and the periphery of the straight pipe 21, which is close to one side of the bent pipe 22, is provided with an external connecting flange 23.

Through the externally mounted flange 23 at straight tube 21, can make whitewashing subassembly 100 wholly be convenient for through external flange 23 and be connected between the exterior structure, the exterior structure can be for the lift seat for whole whitewashing subassembly 100 can slide from top to bottom along with the lift seat along the crane, in order to increase whitewashing subassembly 100 in the ascending operating space of direction of height.

Specifically, the spray gun 2 includes a straight pipe 21 and an elbow pipe 22, as shown in fig. 1 to 5, the elbow pipe 22 is a bent pipe member having a passage inside, the straight pipe 21 is a pipe member having a straight passage inside, and an elbow passage 221 inside the elbow pipe 22 is communicated with a straight pipe passage 211 inside the straight pipe 21, so that slurry entering through the elbow passage 221 can flow into the straight pipe passage 211 through the elbow passage 221. The slurry can flow into the slurry spraying channel 111 from the straight pipe channel 211 and finally be sprayed out from the slurry outlet end 1112 of the nozzle 1.

As shown in fig. 4, one end of the straight pipe 21 protrudes into the nozzle joint 4, that is, the end of the straight pipe 21 that is screwed to the nozzle joint 4. The frustum section 113 has a top portion 1131 and a bottom surface 1132, the top portion 1131 is an end of the frustum section 113 connected to the barrel channel 30, the bottom surface 1132 is an end surface of the frustum section 113 connected to the straight pipe section 112, the straight pipe 21 is sleeved outside the top portion 1131 of the frustum section 113, that is, the end of the frustum section 113 far away from the straight pipe section 112 extends into the barrel channel 30, and one end of the elbow 22 extends into the straight pipe channel 211 and is spaced apart from and opposite to the top portion 1131 of the frustum section 113.

Specifically, the straight pipe 21 is a tubular structure, the straight pipe 21 has two ends, one end of the straight pipe 21 is connected with the nozzle joint 4 and then extends into the nozzle joint 4, the frustum section 113 of the nozzle body 11 is also located in the inner cavity 232 of the nozzle joint 4, the top 1131 of the frustum section 113 faces the end of the straight pipe 21 connected with the nozzle joint 4, and meanwhile, one end of the straight pipe 21 connected with the nozzle joint 4 is sleeved outside the top of the frustum section 113, so that the nozzle body 11 is tightly connected with the straight pipe 21. Mortar is effectively prevented from overflowing when flowing from the straight pipe channel 211 of the straight pipe channel 211 to the mortar spraying channel 111, and the sealing performance of the use of the mortar spraying assembly 100 is ensured.

One end of the straight pipe 21 is connected with the nozzle joint 4, the other end of the straight pipe 21 is connected with the elbow 22, and one end of the elbow 22 connected with the straight pipe 21 extends into the inside of the straight pipe channel 211, so that one end of the elbow 22 extending into the straight pipe 21 and one end of the frustum section 113 extending into the straight pipe 21 are two ends of the straight pipe 21 respectively, and one end of the elbow 22 extending into the straight pipe 21 and one end of the frustum section 113 are spaced by the straight pipe 21, so that mortar sequentially passes through the elbow channel 221, the straight pipe channel 211 and the mortar spraying channel 111.

A mortar spraying apparatus according to an embodiment of the present invention is not shown in the drawings, and includes: the gunning assembly 100, the silo and the bladder of the above-described embodiment are not shown. The storage bin is connected with the spray gun 2 through a mortar pipe, not shown in the figure, and the air bag is communicated with the air injection pipe 3 and the air injection hole 1113 through an air pipe, not shown in the figure.

Specifically, as shown in fig. 4 and 5, one end of the gas nozzle 3 extends into the guniting channel 111, the other end of the gas nozzle 3 may be connected to a gas pipe, and the gas bag may be connected to the gas nozzle 3 through the gas pipe. The air bag can also be communicated with the air injection hole 1113 through an air pipe. The gas of gasbag can get into gas ejector 3 and fumarole 1113 inside by the trachea respectively from this to spout by the one end of gas ejector 3 and fumarole 1113 respectively, realize that the mortar is fan-shaped blowout by a thick liquid end 1112, effectively promote the mortar spun area and can prevent the mortar backward flow.

The mortar in the storage bin enters the bent pipe channel 221 through the bent pipe 22 and further enters the straight pipe channel 211, stable conveying of the mortar is achieved, and the mortar spraying equipment can conduct mortar spraying operation for a long time.

According to the mortar spraying equipment provided by the embodiment of the invention, the mortar can be efficiently sprayed through the mortar spraying assembly 100 provided by the embodiment, the mortar can be sprayed out through the nozzle 1 of the mortar spraying assembly 100 and then distributed in a fan shape, the spraying area of the mortar is effectively increased, and the spraying efficiency of the mortar is improved. And gas is simultaneously input through the gas injection pipe 3 and the gas injection holes 1113 to provide driving force for mortar, so that the backflow of the mortar is prevented while the spraying of the mortar is ensured. The long-time operation of mortar can be realized through the cooperation of the mortar spraying assembly 100, the storage bin and the air bag, and the working efficiency of mortar spraying equipment is improved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A nozzle, comprising:

the nozzle comprises a nozzle body, wherein a guniting channel extending along the axial direction is formed in the middle of the nozzle body, and the guniting channel comprises a guniting end and a guniting end;

the peripheral wall of the nozzle body is provided with an air injection hole communicated with the guniting channel; the gas injection holes are obliquely extended inwards along the radial direction of the guniting channel in the guniting direction of the guniting channel;

the intersection point of the extension line of the central line of the jet hole and the axial central line of the guniting channel is positioned on the inner side of the guniting end, and the intersection point of the extension line of the central line of the jet hole and the bus of the guniting channel is positioned on the outer side of the guniting end.

2. The nozzle of claim 1, wherein the gas orifice centerline is at an angle in the range of degrees to degrees with respect to the guniting channel axial centerline.

3. The nozzle according to claim 1, wherein the nozzle body is formed by interconnecting a straight tube section and a frustum section, the straight tube section is located on the side of the grout outlet end, the frustum section is located on the side of the grout inlet end, the outer diameter of the frustum section close to the end surface on one side of the straight tube section is larger than that of the straight tube section, the outer diameter of the frustum section close to the end surface on one side of the straight tube section is larger than that of the frustum section far away from the end surface on one side of the straight tube section, and the air inlet end of the air injection hole is formed in the frustum section.

4. A guniting assembly, comprising:

a nozzle according to any one of claims 1 to 3;

the gunjet is connected with the slurry inlet end of the nozzle body, and a gun barrel passage communicated with the slurry spraying passage is arranged in the gunjet;

and the gas injection pipe is arranged on the spray gun and extends into the guniting channel.

5. The guniting assembly according to claim 4,

and the air injection end of the air injection pipe is positioned behind the intersection point of the central line of the air injection hole and the inner wall of the guniting channel.

6. The guniting assembly according to claim 4,

the spray gun with the nozzle body establishes the nozzle joint connection in the periphery through the cover, the spray gun the nozzle body with form the transition chamber between the nozzle joint, be equipped with inlet channel on the periphery wall of spray gun, inlet channel with the fumarole all with the transition chamber intercommunication, inlet channel's inlet end sets up inlet joint.

7. The guniting assembly according to claim 6, wherein the nozzle joint is in a sleeve shape, one end of the nozzle joint is provided with an inward-turned circular ring part, the circular ring part abuts against a stepped end face of the periphery of the nozzle body, and the other end of the nozzle joint is in threaded connection with the spray gun;

one end of the nozzle body extends into the gun barrel channel of the spray gun, and a guide inclined plane is arranged at one end of the nozzle body extending into the gun barrel channel.

8. The guniting assembly according to claim 4, wherein the lance has a bend portion, the gas lance being mounted on the bend portion, the gas lance passing through the barrel passage and extending into the guniting passage.

9. The guniting assembly according to claim 7, wherein the lance comprises:

a bend defining a bend passage therein, the bend passage adapted to receive external slurry, the bend portion disposed on the bend;

the one end of straight tube with the nozzle can be dismantled and be connected, the other end with the return bend can be dismantled and be connected, inject the straight tube passageway in the straight tube, the return bend passageway the straight tube passageway with the whitewashing passageway communicates in proper order, the straight tube is close to the periphery of return bend one side is equipped with external flange.

10. A mortar spraying apparatus, comprising:

the guniting assembly according to any one of claims 5-9;

the storage bin is connected with the spray gun through a mortar pipe;

and the air bag is communicated with the air injection pipe and the air injection hole through an air pipe.

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