CN211900632U - Piston rotor type concrete sprayer - Google Patents

Abstract

The utility model discloses a piston rotor type concrete sprayer, which relates to the technical field of concrete spraying equipment, and comprises a bottom frame, a cylinder barrel structure, a rotor mechanism and a hydraulic system, wherein the cylinder barrel structure comprises an upper cylinder barrel mechanism and a lower cylinder barrel mechanism, the rotor structure comprises a rotor shell, a rotor and a conical distributor, the components of the cylinder barrel structure comprise a cylinder barrel, a pushing piston, a sealing piston and a box body, the lower cylinder barrel mechanism is also provided with a material collecting box for collecting excess materials accumulated by the pushing piston, and the upper cylinder barrel mechanism is also provided with a material blocking piece for preventing the materials from directly entering the lower cylinder barrel; when the piston rotor type concrete sprayer works, the upper cylinder mechanism and the lower cylinder mechanism respectively work independently, and one sealing piston is always kept at a sealing position, so that the friction distance between the sealing piston and the cylinder is broken, the sealing performance is ensured, and the abrasion is reduced; in addition, the concrete sprayer also has the advantages of long conveying distance, no dust in the working process, long service life and the like.

Description

Piston rotor type concrete sprayer

Technical Field

The utility model belongs to the technical field of concrete spraying equipment technique and specifically relates to a piston rotor formula concrete sprayer.

Background

The concrete sprayer can not be opened in the coal mine tunnel construction and road and railway tunnel construction processes, and the common concrete sprayers at present mainly have the forms of a rotor type, a push chain type, a pumping type and the like, wherein the pumping type concrete sprayer can only be used for wet spraying, the equipment volume is large, the cleaning and maintenance are complex, and the application is less and less; the dry spraying and wet spraying equipment such as a rotor type spraying chain type spraying machine and the like has the problems of large dust, short conveying distance, quick abrasion of a sealing piece and the like, so that the concrete spraying machine which is small in size, small in dust amount and long in conveying distance is required to be provided.

In addition, the existing rotor type concrete sprayer also has the problems that the sealing is not tight, the spraying distance is small, dust is easy to generate and the like because the sealing is mainly realized by a feeding piston, and therefore the structure of the existing rotor type concrete sprayer needs to be further improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the dust that causes owing to sealed not enough is big, transport distance is short among the concrete spraying process to and the wearing and tearing that sealing member and cylinder and concrete friction caused, the utility model provides a piston rotor formula concrete sprayer, concrete technical scheme as follows.

A piston rotor type concrete sprayer comprises a chassis, a cylinder barrel structure, a rotor mechanism and a hydraulic system, wherein the chassis comprises a rack and a travelling wheel, and the travelling wheel is arranged at the bottom of the rack; the cylinder barrel mechanism is fixedly arranged above the rotor mechanism, the rotor mechanism is fixed on the rack and used for spraying concrete, and the hydraulic system realizes hydraulic drive; the cylinder barrel structure comprises an upper cylinder barrel mechanism and a lower cylinder barrel mechanism, and the upper cylinder barrel mechanism and the lower cylinder barrel mechanism are arranged in parallel; the hopper is fixedly connected with an upper cylinder of the upper cylinder mechanism, the upper cylinder is communicated with an upper box body, the lower part of the upper box body is connected with a lower cylinder, the lower cylinder is connected with a lower box body, and the lower box body is arranged above the rotor mechanism; an upper pushing piston is arranged in the upper cylinder barrel, and the upper pushing piston is connected with the upper sealing piston through an upper connecting shaft.

Preferably, the upper cylinder mechanism comprises an upper hydraulic cylinder, an upper box body, an upper cylinder, an upper sealing piston and an upper pushing piston, the upper box body is fixedly connected with the lower cylinder through a mounting flange, the upper hydraulic cylinder is arranged on one side of the upper cylinder, and the other side of the upper cylinder is communicated with the upper box body; the front end of an upper piston rod of the upper hydraulic cylinder is provided with an upper sealing piston, the front end of the upper piston rod is also connected with an upper connecting shaft, and the front end of the upper connecting shaft is fixedly provided with an upper pushing piston; the upper part of the upper cylinder barrel is fixedly connected with the hopper through a connecting flange; and a sealing end cover is arranged at the end part of the upper box body.

Preferably, the lower cylinder mechanism comprises a lower hydraulic cylinder, a lower box body, a lower cylinder, a lower sealing piston, a lower pushing piston, a material collecting box and an exhaust device, the lower box body is fixedly connected with the rotor shell, the lower hydraulic cylinder is installed on one side of the lower box body, and the lower cylinder, the material collecting box and the exhaust device are sequentially installed on the other side of the lower box body; the front end of a lower piston rod of the lower hydraulic cylinder is provided with a lower sealing piston, the front end of the lower piston rod is also connected with a lower connecting shaft, and the front end of the lower connecting shaft is fixedly provided with a lower pushing piston; and the end part of the lower pushing piston is also provided with an exhaust rod along the axis.

Still preferably, the exhaust device comprises an exhaust rod, an exhaust flange, an exhaust seat, an exhaust pipe, an exhaust piston, a spring pressing sheet, a large nut and a tensioning hand wheel; the exhaust flange is fixed on the side surface of the dust collection box opposite to the lower cylinder, and the exhaust seat is arranged on the exhaust flange; the exhaust pipe penetrates through the exhaust flange and is fixed, a plurality of inner exhaust holes are symmetrically formed in the pipe wall of the exhaust pipe, and an external thread is further formed at one end of the exhaust pipe; an inner shaft shoulder is further arranged inside the exhaust pipe and matched with the exhaust piston, a spring is arranged on the opposite side of the exhaust piston and the inner shaft shoulder, and a spring pressing sheet is arranged between the spring and the large nut; the big nut is provided with internal threads and is installed in a matched mode with the internal threads of the exhaust pipe, and the middle of the big nut is further provided with a tensioning hand wheel.

Further preferably, the rotor mechanism comprises a rotor housing, a rotor, a conical distributor, an air inlet, a discharge port, housing support legs and a driving mechanism, the driving mechanism comprises a driving motor, a gear box and a motor seat, the rotor housing is fixed above the gear box through the housing support legs, the rotor is arranged in the rotor housing and connected with an output shaft of the gear box, and the conical distributor is arranged above the rotor; a sealing seat is further arranged between the rotor shell and the output shaft of the gear box, a 0-shaped sealing ring is arranged in the sealing seat, a discharge port is arranged at the bottom of the rotor shell, and an air inlet is further formed above the rotor shell on the same side as the discharge port; the input end of the gear box is fixedly arranged on the motor seat, and the motor output shaft and the gear box input shaft are sleeved through a spline.

Still further preferably, the rotor is annular, a plurality of partition plates are uniformly arranged along the radius of the rotor, a plurality of material cavities are formed between the partition plates, and openings are arranged at the lower sides of the material cavities; the air inlet is provided with an air inlet device, the air inlet device extends into the rotor shell, and the air outlet of the air inlet device is the same as the material groove on the rotor in shape.

Still further preferably, the hydraulic system comprises a hydraulic oil tank, a motor and a hydraulic pump, the hydraulic oil tank is fixedly mounted on the frame, the motor is arranged above the hydraulic oil tank, and the hydraulic pump pumps hydraulic oil from the hydraulic oil tank.

Still further preferably, the upper connecting shaft is provided with more than 2 material blocking pieces at equal intervals, and the diameter of the material blocking pieces is smaller than the inner diameter of the upper cylinder.

The beneficial effects of the utility model include:

(1) the utility model provides a pair of piston rotor formula concrete sprayer has installed cylinder structure, rotor mechanism and hydraulic system on the chassis, makes equipment overall structure compact, through the cooperation of last cylinder mechanism and lower cylinder mechanism, has realized better sealed, has reduced the dust, has improved jet distance.

(2) The material pushing piston and the sealing piston of the injection machine are separated, so that the contact distance between the piston and the cylinder barrel and between the piston and the material is shortened, the sealing of the piston is reduced, and the service life of the piston is prolonged; the material blocking pieces ensure the ordered feeding of the hopper, and the material in the hopper is prevented from directly entering the lower cylinder barrel; the material collecting box is arranged to form a sealed space, and can also collect less materials carried by the lower material pushing piston.

(3) When the jet machine works, one of the sealing pistons is in a sealing state, so that the whole sealing of the equipment is ensured, the dust is prevented from escaping, and the sealing performance is ensured to improve the conveying distance; the conical distributor distributes the falling materials into each material cavity of the rotor, so that the continuity of concrete conveying and guniting is realized, and guniting pulses are reduced.

Drawings

FIG. 1 is a schematic diagram of a piston rotor concrete sprayer;

FIG. 2 is a schematic view of a partial structure of a piston rotor type concrete sprayer;

FIG. 3 is a schematic view of a rotor mechanism;

FIG. 4 is a schematic structural view of a rotor housing;

FIG. 5 is a schematic view of the structure of the air intake device;

FIG. 6 is a schematic view of the structure of the rotor;

FIG. 7 is a partial structural view of the lower cylinder;

FIG. 8 is a schematic sectional view of the lower cylinder;

FIG. 9 is a schematic view of the structure of the exhaust apparatus;

FIG. 10 is a schematic view of the exhaust pipe structure;

FIG. 11 is a schematic structural view of the upper cylinder;

FIG. 12 is a schematic sectional view of the upper cylinder;

in the figure:

1-chassis, 2-rotor mechanism; 3-a lower cylinder mechanism, 4-a hopper, 5-an upper cylinder mechanism and 6-a hydraulic system;

201-gear box, 202-motor seat, 203-driving motor, 204-shell supporting leg, 205-conical distributor, 206-air inlet, 207-rotor, 208-rotor shell, 209-sealing seat, 210-discharge port, 211-air inlet mounting seat, 212-mounting plate, 213-air outlet and 214-material cavity;

301-lower hydraulic cylinder, 302-lower hydraulic cylinder mounting seat, 303-lower sealing piston, 304-lower box body, 305-lower pushing piston, 306-exhaust rod, 307-lower cylinder barrel, 308-material collecting box, 309-exhaust device, 311-exhaust pipe, 312-exhaust seat, 313-spring, 314-spring pressing sheet, 315-tensioning hand wheel, 316-large nut, 317-exhaust piston and 318-exhaust flange; 319-lower connecting shaft; 320-lower piston rod; 321-inner exhaust holes;

501-upper hydraulic cylinder, 502-upper hydraulic cylinder mounting seat, 503-upper cylinder barrel, 504-material blocking piece, 505-upper sealing piston, 506-upper box body, 507-sealing end cover, 508-upper material pushing piston and 509-upper connecting shaft.

Detailed Description

Referring to fig. 1 to 12, the present invention provides a concrete sprayer with a piston rotor according to the following embodiments.

A piston rotor type concrete sprayer body structure comprises a bottom frame 1, a cylinder barrel structure, a rotor mechanism 2 and a hydraulic system 6, wherein the bottom frame is used for bearing the sprayer structure and assisting the sprayer to walk; the cylinder barrel structure utilizes the cylinder barrels which are arranged in parallel up and down to control the material to be supplied to the injection device, and particularly the sealing design of the upper cylinder barrel and the lower cylinder barrel in the working process realizes good sealing and prolongs the service life of the piston; the rotor mechanism is used for uniformly distributing materials, realizing continuous conveying of concrete and reducing pulse; the hydraulic system provides power for all working parts of the injection machine, and the injection machine can be suitable for complex environments such as underground coal mines and the like through hydraulic drive.

The chassis 1 of piston rotor formula concrete sprayer includes frame and walking wheel, and the walking wheel sets up in the bottom of frame, can set up 1 walking wheel respectively in the four corners position of frame, and the frame can use steel welding preparation, and the walking wheel can select suitable walking wheel structure according to service environment. The cylinder mechanism is fixedly arranged above the rotor mechanism, the rotor mechanism is fixed on the frame and used for spraying concrete, and the hydraulic system realizes hydraulic drive. The cylinder barrel structure comprises an upper cylinder barrel mechanism 5 and a lower cylinder barrel mechanism 3, the upper cylinder barrel mechanism 5 and the lower cylinder barrel mechanism 3 are arranged in parallel, and the upper cylinder barrel structure and the lower cylinder barrel mechanism work independently to realize sealing and feeding in a matching mode. The hopper 4 is fixedly connected with an upper cylinder 503 of the upper cylinder mechanism, the upper cylinder 503 is communicated with an upper box body 506, the lower part of the upper box body 506 is connected with a lower cylinder 307, the lower cylinder 307 is connected with a lower box body 304, and the lower box body 304 is arranged above the rotor mechanism; the material falls from the hopper 4 into the upper cylinder 503, is pushed from the upper cylinder into the upper tank 506, falls from the upper tank 506 into the lower cylinder 307, is pushed from the lower cylinder 307 into the lower tank 304, and falls from the lower tank 304 to the upper side of the rotor mechanism. An upper pushing piston is arranged in the upper cylinder barrel, the upper pushing piston is connected with the upper sealing piston through an upper connecting shaft, more than 2 material blocking pieces are arranged on the upper connecting shaft at equal intervals, and the material can be prevented from directly falling into the lower cylinder barrel from the hopper through the blocking pieces.

The upper cylinder mechanism of the cylinder barrel structure comprises an upper hydraulic cylinder 501, an upper box body 506, an upper cylinder barrel 503, an upper sealing piston 505, an upper pushing piston 508 and a material blocking piece 504, wherein the upper box body and the lower cylinder barrel are fixedly connected through a mounting flange, one side of the upper cylinder barrel is provided with the upper hydraulic cylinder, the other side of the upper cylinder barrel is communicated with the upper box body, the front end of an upper piston rod of the upper hydraulic cylinder is provided with the upper sealing piston, the front end of the upper piston rod is further connected with an upper connecting shaft, the front end of the upper connecting shaft is fixedly provided with the upper pushing piston, the upper side of the upper cylinder barrel is fixedly connected with a hopper through a connecting flange, the diameter of the material blocking piece is smaller than the inner diameter of the upper cylinder. The upper piston rod of the upper hydraulic cylinder extends, the pushing piston moves along with the upper piston rod, materials in the upper cylinder barrel are pushed to the upper box body, the materials enter the upper box body in a grading mode due to the existence of the blocking pieces, and the blocking pieces can be blocked between the upper cylinder barrel and the upper box body.

The lower cylinder mechanism of the cylinder structure comprises a lower hydraulic cylinder 301, a lower box body 304, a lower cylinder 307, a lower sealing piston 303, a lower pushing piston 305, a material collecting box 308 and an exhaust device 309, wherein the lower box body is fixedly connected with the rotor shell, and specifically can be welded or connected with a flange. Wherein lower hydraulic cylinder is installed to lower box one side, and the opposite side is installed down cylinder, collection workbin and exhaust apparatus in proper order, and lower material pushing piston moves in lower cylinder, and the setting of collection workbin is in order to form sealedly, can also avoid in addition increasing and blockking up from the gap to the material of lower material pushing piston opposite side, and exhaust apparatus is then for guaranteeing that material pushing piston reciprocating motion in-process can not be because of producing down. The front end of a lower piston rod of the lower hydraulic cylinder is provided with a lower sealing piston, the front end of the lower piston rod is also connected with a lower connecting shaft, the lower piston rod and the lower connecting shaft are coaxially arranged, and the front end of the lower connecting shaft is fixedly provided with a lower pushing piston; the end part of the lower pushing piston is also provided with an exhaust rod along the axial direction, and the exhaust rod corresponds to an exhaust piston of the exhaust device.

The exhaust device of the lower cylinder mechanism comprises an exhaust rod 306, an exhaust flange 318, an exhaust seat 312, an exhaust pipe 311, an exhaust piston 317, a spring 313, a spring pressing sheet 314, a large nut 316 and a tensioning hand wheel 315, wherein the exhaust flange is fixed on the side surface of the dust collection box opposite to the lower cylinder, and the exhaust seat is arranged on the exhaust flange; the blast pipe passes the exhaust flange and fixed, still is provided with a plurality of interior exhaust holes on the pipe wall of blast pipe, and the preferred is 4 interior exhaust holes of symmetrical arrangement, and the one end of blast pipe still is provided with the external screw thread to easy to assemble. The inside of blast pipe still is provided with interior shaft shoulder, and interior shaft shoulder and exhaust piston cooperation, the spring is installed to the offside of exhaust piston and interior shaft shoulder, is provided with the spring preforming between spring and the big nut. The big nut is provided with internal threads which are matched and installed with the internal threads of the exhaust pipe, and the middle part of the big nut is also provided with a tensioning hand wheel which is used for adjusting the matching of the big nut and the exhaust pipe and ensuring the elasticity of the spring.

The rotor mechanism comprises a rotor shell 208, a rotor 207, a conical distributor 205, an air inlet 213, a discharge port 210, shell supporting legs 204 and a driving mechanism, the driving mechanism comprises a driving motor 203, a gear box 201 and a motor base 202, the rotor shell is fixed above the gear box through the shell supporting legs, the rotor is arranged in the rotor shell and connected with an output shaft of the gear box, and the conical distributor is arranged above the rotor. Still be provided with the seal receptacle between the output shaft of rotor shell and gear box, the inside 0 type sealing washer that is provided with of seal receptacle, the discharge gate is installed to the bottom of rotor shell, with the rotor shell top of discharge gate homonymy still is provided with the air inlet. The input end fixed mounting of gear box is on the motor seat, cup joints through the spline between motor output shaft and the gear box input shaft. Wherein the whole annular that is of rotor, evenly arrange a plurality of baffles along the annular, the baffle is arranged along the radius of rotor, forms a plurality of material chambeies between the baffle, material chamber downside opening, the through-hole in the middle of the rotor is the mounting hole, and mounting hole and gear box output shaft cooperation are installed, and this mounting hole can be oblate, and the output shaft of gear box also is the oblate form. In addition, the rotor shell is integrally cylindrical, a fixing plate is arranged at the lower side of the rotor shell, and a sealing hole and a discharge hole are formed in the fixing plate; the side surface of the rotor shell is provided with an air inlet mounting seat, the air inlet mounting seat is used for fixedly mounting an air inlet device, the air inlet device comprises a mounting plate and an air outlet, the mounting plate and the air inlet mounting seat are mutually matched and mounted, the air outlet part of the air inlet device extends into the rotor shell, and the shape of the air outlet is the same as the outline shape of a rotor material cavity, so that the injection feeding is facilitated.

The hydraulic system 6 comprises a hydraulic oil tank, a motor and a hydraulic pump, wherein the hydraulic oil tank is fixedly arranged on the rack, the motor is arranged above the hydraulic oil tank, and the hydraulic pump pumps hydraulic oil from the hydraulic oil tank.

When the piston rotor type concrete sprayer works, at least one sealing piston of the upper sealing piston and the lower sealing piston is in a sealing position. The material pushing device comprises an upper hydraulic cylinder, a lower hydraulic cylinder, an upper pushing piston, an upper box, an upper sealing piston, a lower sealing piston, an exhaust device and a lower hydraulic cylinder. When the jet machine works, one of the sealing pistons is in a sealing state, so that the whole sealing of the equipment is ensured, the dust is prevented from escaping, and the sealing performance is ensured to improve the conveying distance.

The concrete sprayer is provided with the cylinder barrel structure, the rotor mechanism and the hydraulic system on the chassis, so that the whole structure of the equipment is compact, better sealing is realized through the matching of the upper cylinder barrel mechanism and the lower cylinder barrel mechanism, dust is reduced, and the spraying distance is increased; particularly, the pushing piston and the sealing piston of the injection machine are separated, so that the contact distance between the piston and the cylinder barrel and between the piston and the material is shortened, the sealing of the piston is reduced, and the service life of the piston is prolonged; the material blocking pieces ensure the ordered feeding of the hopper, and the material in the hopper is prevented from directly entering the lower cylinder barrel; the material collecting box is arranged to form a sealed space, and can also collect less materials carried by the lower material pushing piston; the conical distributor distributes the falling materials into each material cavity of the rotor, so that the continuity of concrete conveying and guniting is realized, and guniting pulses are reduced. In addition, the concrete sprayer also has the advantages of long conveying distance, no dust in the working process, long service life and the like.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims (8)

1. A piston rotor type concrete sprayer is characterized by comprising a chassis, a cylinder barrel structure, a rotor mechanism and a hydraulic system, wherein the chassis comprises a rack and a traveling wheel, and the traveling wheel is arranged at the bottom of the rack; the cylinder barrel mechanism is fixedly arranged above the rotor mechanism, the rotor mechanism is fixed on the rack and used for spraying concrete, and the hydraulic system realizes hydraulic drive; the cylinder barrel structure comprises an upper cylinder barrel mechanism and a lower cylinder barrel mechanism, and the upper cylinder barrel mechanism and the lower cylinder barrel mechanism are arranged in parallel; the hopper is fixedly connected with an upper cylinder of the upper cylinder mechanism, the upper cylinder is communicated with an upper box body, the lower part of the upper box body is connected with a lower cylinder, the lower cylinder is connected with a lower box body, and the lower box body is arranged above the rotor mechanism; an upper pushing piston is arranged in the upper cylinder barrel, and the upper pushing piston is connected with the upper sealing piston through an upper connecting shaft.

2. The piston rotor type concrete sprayer according to claim 1, wherein the upper cylinder mechanism comprises an upper hydraulic cylinder, an upper box body, an upper cylinder, an upper sealing piston and an upper pushing piston, the upper box body and the lower cylinder are fixedly connected through a mounting flange, the upper hydraulic cylinder is arranged on one side of the upper cylinder, and the other side of the upper cylinder is communicated with the upper box body; the front end of an upper piston rod of the upper hydraulic cylinder is provided with an upper sealing piston, the front end of the upper piston rod is also connected with an upper connecting shaft, and the front end of the upper connecting shaft is fixedly provided with an upper pushing piston; the upper part of the upper cylinder barrel is fixedly connected with the hopper through a connecting flange; and a sealing end cover is arranged at the end part of the upper box body.

3. The piston rotor type concrete sprayer according to claim 2, wherein the lower cylinder mechanism comprises a lower hydraulic cylinder, a lower box body, a lower cylinder, a lower sealing piston, a lower pushing piston, a material collecting box and an exhaust device, the lower box body is fixedly connected with the rotor shell, the lower hydraulic cylinder is installed on one side of the lower box body, and the lower cylinder, the material collecting box and the exhaust device are sequentially installed on the other side of the lower box body; the front end of a lower piston rod of the lower hydraulic cylinder is provided with a lower sealing piston, the front end of the lower piston rod is also connected with a lower connecting shaft, and the front end of the lower connecting shaft is fixedly provided with a lower pushing piston; and the end part of the lower pushing piston is also provided with an exhaust rod along the axis.

4. A piston rotor concrete sprayer according to claim 3, characterized in that the exhaust means comprises an exhaust rod, an exhaust flange, an exhaust seat, an exhaust pipe, an exhaust piston, a spring plate, a large nut and a tension handwheel; the exhaust flange is fixed on the side surface of the dust collection box opposite to the lower cylinder, and the exhaust seat is arranged on the exhaust flange; the exhaust pipe penetrates through the exhaust flange and is fixed, a plurality of inner exhaust holes are symmetrically formed in the pipe wall of the exhaust pipe, and an external thread is further formed at one end of the exhaust pipe; an inner shaft shoulder is further arranged inside the exhaust pipe and matched with the exhaust piston, a spring is arranged on the opposite side of the exhaust piston and the inner shaft shoulder, and a spring pressing sheet is arranged between the spring and the large nut; the big nut is provided with internal threads and is installed in a matched mode with the internal threads of the exhaust pipe, and the middle of the big nut is further provided with a tensioning hand wheel.

5. A piston rotor concrete sprayer according to claim 4, characterized in that the rotor mechanism comprises a rotor housing, a rotor, a conical distributor, an air inlet, a discharge outlet, housing legs and a drive mechanism, the drive mechanism comprises a drive motor, a gear box and a motor base, the rotor housing is fixed above the gear box through the housing legs, the rotor is arranged in the rotor housing and connected with an output shaft of the gear box, the conical distributor is arranged above the rotor; a sealing seat is further arranged between the rotor shell and the output shaft of the gear box, a 0-shaped sealing ring is arranged in the sealing seat, a discharge port is arranged at the bottom of the rotor shell, and an air inlet is further formed above the rotor shell on the same side as the discharge port; the input end of the gear box is fixedly arranged on the motor seat, and the motor output shaft and the gear box input shaft are sleeved through a spline.

6. A piston rotor type concrete sprayer according to claim 5, characterized in that the rotor is annular, a plurality of partition plates are uniformly arranged along the radius of the rotor, a plurality of material cavities are formed between the partition plates, and the lower sides of the material cavities are provided with openings; the air inlet is provided with an air inlet device, the air inlet device extends into the rotor shell, and the air outlet of the air inlet device is the same as the material groove on the rotor in shape.

7. A piston rotor concrete sprayer according to claim 6, characterized in that the hydraulic system comprises a hydraulic oil tank fixedly mounted on the frame, an electric motor arranged above the hydraulic oil tank, and a hydraulic pump pumping hydraulic oil from the hydraulic oil tank.

8. A piston rotor concrete sprayer according to claim 7, wherein more than 2 baffle plates are equally spaced on the upper connecting shaft, and the diameter of the baffle plates is smaller than the inner diameter of the upper cylinder.

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