CN113618909A

CN113618909A - Automatic cement mixer of clean scraper blade

Info

Publication number: CN113618909A
Application number: CN202110967420.7A
Authority: CN
Inventors: 姚斌
Original assignee: Xinchang Chenghui Electrical And Mechanical Equipment Co ltd
Current assignee: Xinchang Chenghui Electrical And Mechanical Equipment Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2021-11-09

Abstract

The invention discloses a cement mixer capable of automatically cleaning a scraper blade, which relates to the technical field of cement mixers and comprises an inner cylinder, an outer cylinder, a bottom cover, a top cover, a fixed rod, a scraper blade, a first motor and a second motor, wherein the inner cylinder is arranged on the inner wall of the outer cylinder, the top cover is arranged above the inner cylinder, the bottom cover is arranged at the bottom of the inner cylinder, the first motor is arranged below the bottom cover, the second motor is arranged above the top cover, a transmission shaft is arranged at the output end of the second motor, one end of the fixed rod is fixedly arranged on the transmission shaft, the other end of the fixed rod is provided with a fixed clamping groove, the fixed clamping groove corresponds to the scraper blade in size, and the scraper blade is movably connected with the fixed rod through the fixed clamping groove. According to the invention, the scraper is matched with the fixed rod and the fixed clamping groove, so that the residual cement on the scraper can be scraped off by the clamping groove at one end of the fixed rod while the scraper is taken out, thereby achieving an automatic cleaning effect, and further obviously improving the working efficiency of the scraper.

Description

Automatic cement mixer of clean scraper blade

Technical Field

The invention relates to the technical field of cement mixers, in particular to a cement mixer capable of automatically cleaning a scraper.

Background

The cement mixer is also called as a concrete mixer, along with the economic high-speed development in recent years, the civil and architectural industry is increasingly hot, the demand of cement is increasingly large, the mixer is widely applied to the industrial production of chemical industry, building, food, environmental protection and the like, and the mixing can promote two or more than two materials to be mutually dispersed and fully contacted under the action of operation, so that the uniformity of a density field, a concentration field and a temperature field is further achieved. The cement mixer is an important component of building industry, mainly is a mixing device for mixing various mortars, materials, cement and adhesives, and is widely applied to the fields of building mortar mixing, putty powder mixing, dry powder coating mixing and the like.

The invention discloses a cement mixer with an automatic cleaning function and a good mixing effect, which is disclosed by the invention patent with the publication number of CN108297277B in the prior art, and comprises a shell, a feeding hole, a rotating shaft, at least two supports and at least two mixing plates, wherein a cleaning mechanism comprises a lifting assembly, a moving assembly and at least two nozzles, and the lifting assembly comprises a driving unit, a cross rod, a moving block, a fixed block, a telescopic frame, a connecting plate, a transmission block and two vertical rods.

The invention has simple structure, can adjust the position of the cleaning mechanism to clean the shell in multiple directions, but has the following problems in the actual working process: 1. the cement is easily adhered to the upper cleaning mechanism: therefore, the cleaning mechanism cannot work normally, and the cement of the shell cannot be cleaned normally, so that the waste of raw materials is caused and the working efficiency of the stirrer is influenced; 2. incomplete cleaning: the cement adhered on the shell is cleaned only by washing, and the cement has adhesiveness, so that the cleaning is not thorough.

Disclosure of Invention

The invention aims to provide a cement mixer capable of automatically cleaning a scraper, which aims to solve the technical problems that cement is easily adhered to a cleaning mechanism and cannot be cleaned completely in the prior art.

The invention provides a cement mixer capable of automatically cleaning a scraper, which comprises an inner cylinder, an outer cylinder, a bottom cover, a top cover, a fixed rod, a scraper, a first motor and a second motor, wherein the inner cylinder is arranged on the inner wall of the outer cylinder, the top cover is arranged above the inner cylinder, the bottom cover is arranged at the bottom of the inner cylinder, four supporting blocks are fixedly arranged below the bottom cover, the first motor is arranged below the bottom cover, the second motor is arranged above the top cover, a transmission shaft is arranged at the output end of the second motor, one end of the fixed rod is fixedly arranged on the transmission shaft, the other end of the fixed rod is provided with a fixed clamping groove, the size of the fixed clamping groove corresponds to that of the scraper, the scraper is movably connected with the fixed rod through the fixed clamping groove, an integral separation type mechanism is arranged on the inner wall of the inner cylinder, a linkage spraying mechanism is arranged above the top cover, and a feed inlet is arranged above the top cover, still be equipped with the water valve on the discharge gate, the fixed two fixed buckles that are equipped with in top cap top, two the one end of fixed buckle all with second motor fixed connection, two the fixed buckle other end all with top cap lateral wall fixed connection, urceolus one side is equipped with automatic replacement subassembly.

Further, integral type separating mechanism includes two location fixture blocks, two sets of extrusion mechanisms, two spring posts, two springs, friction baffle and support sliding block, two extrusion mechanisms sets up respectively at two location fixture block inner walls, two the location fixture block is the fixed below that sets up dead lever one end all, the activity of friction baffle sets up the outer wall at the inner tube, it slides the inner wall that sets up at the urceolus to support the sliding block, two spring post one end fixed connection are on supporting the sliding block surface, two spring post other ends all run through the friction baffle, and all are equipped with the biggest displacement distance stopper of restriction friction baffle on the other end of two spring posts, two the spring overlaps respectively and establishes on two spring posts.

Further, every group extrusion mechanism all includes extrusion piece and promotes the piece, extrusion piece slides and sets up inside the location fixture block, promote piece sliding connection inside the location fixture block, and extrusion piece and promote the piece contact, promote still to be equipped with the inclined plane of cooperation extrusion piece on the piece, it sets up on the friction baffle to promote the piece other end fixedly.

Further, two extrusion piece one end all rotates and is provided with vertical gyro wheel, two the extrusion piece other end all rotates and is equipped with horizontal gyro wheel, and horizontal gyro wheel is sliding fit with the promotion piece.

Furthermore, the output end of the first motor is fixedly provided with a rotating column, and a spiral stirring piece is fixedly arranged on the rotating column.

Further, the linkage sprays the mechanism and includes master gear, two driven gear, two catch bars, two fixed axles, two mounts and two high pressure nozzle, the master gear is fixed to be established at the output of second motor, and the master gear is coaxial with the transmission shaft, two driven gear sets up respectively in master gear both sides and with master gear meshing, two the one end of catch bar rotates respectively to be set up two the driven gear top, the other end of two catch bars rotates respectively with two crosses and is connected, two the cross rotates to be set up in the mount top, two the mount articulates at the top cap inner wall through two fixed axles, and is two sets of high pressure nozzle fixed connection is in the below of two mounts respectively.

Further, it includes gas clamp and lead screw slip table to change the subassembly automatically, the both sides of gas clamp claw end centre gripping in the scraper blade top, the other end of gas clamp and the slider fixed connection of lead screw slip table, lead screw slip table below is equipped with the support base.

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the invention, the scraper is inserted into the fixed clamping groove corresponding to one end of the fixed rod, at the moment, the output end of the second motor starts to rotate so as to drive the transmission shaft to rotate, and the rotation of the transmission shaft drives the fixed rod to rotate around the transmission shaft, so that the scraper is driven to rotate along with the inner cylinder wall so as to scrape off residual cement on the inner cylinder wall, the problem that the residual cement on the cylinder wall during stirring is improved is effectively solved, the working efficiency during stirring of the cement is improved, and the service life of the scraper is effectively prolonged.

(2) According to the invention, the scraping plate is inserted between the two positioning clamping blocks to extrude the extruding mechanism, so that the extruding mechanism pushes the friction baffle to be in zero contact with the outer wall of the inner barrel, the separated integrated mechanism is enabled to be released from fixing the outer wall of the inner barrel, at the moment, the separated integrated mechanism can rotate with the scraping plate simultaneously, after the work is completed, the scraping plate is pulled out, so that the scraping plate is released from extruding the extruding mechanism, and meanwhile, the spring rebounds to push the friction baffle to be in re-contact with the outer wall of the outer barrel, so that the integrated separating mechanism is enabled to be fixed in friction on the outer wall of the inner barrel again, the fixed clamping blocks are prevented from being displaced when the scraping plate is replaced, and finally, when the scraping plate is inserted next time, the direct contraposition insertion into the fixed clamping blocks can not be realized, and the convenience of the device is improved.

(3) After the scraper is used for a period of time, the scraper can be automatically replaced through the automatic replacement assembly, so that the waste of human resources is reduced.

(4) The invention connects the master gear through the output end of the second motor and rotates by taking the output end of the second motor as the center of a circle, the master gear rotates and respectively drives the two driven gears which are meshed with the master gear to rotate, the two driven gears rotate and both drive one ends of the two pushing rods to do circular motion, at the moment, the other ends of the two pushing rods drive the cross shafts to rotate around the transverse shafts and simultaneously drive the upper part of the fixed frame to do pendulum motion around the fixed shaft, thereby automatically adjusting the angle of the high-pressure spray nozzle fixedly arranged below the fixed frame, increasing the cleaning area during cleaning and improving the cleaning efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of a first operating state of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a schematic view of the top cover of the present invention;

FIG. 4 is a schematic internal view of a portion of the structure of the present invention;

FIG. 5 is a sectional view of the pressing mechanism of the present invention in a first operating state;

FIG. 6 is a sectional view of the pressing mechanism of the present invention in a second operating state;

FIG. 7 is a structural diagram illustrating a second operating state of the present invention;

fig. 8 is a structural diagram of a third working state of the present invention.

Reference numerals:

1. an inner barrel; 2. an outer cylinder; 3. a bottom cover; 4. a top cover; 5. fixing the rod; 51. fixing the clamping groove; 6. a squeegee; 7. a first motor; 8. a second motor; 9. an integral separate mechanism; 911. positioning a fixture block; 912. an extrusion mechanism; 913. a spring post; 914. a spring; 915. a friction baffle; 916. a support slide block; 917. extruding the block; 918. a pushing block; 919. a vertical roller; 920. a horizontal roller; 10. a drive shaft; 11. a linkage spraying mechanism; 111. a main gear; 112. a driven gear; 113. a push rod; 114. a fixed shaft; 115. a cross shaft; 116. a fixed mount; 117. a high pressure spray head; 12. four support blocks; 13. a feed inlet; 14. fixing the buckle; 15. automatically replacing the components; 151. air clamping; 152. a screw rod sliding table; 16. a discharge port; 17. rotating the column; 18. spirally stirring the slices; 19. a support base; 20. a water valve.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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.

Referring to fig. 1 to 8, an embodiment of the present invention provides a cement mixer capable of automatically cleaning a scraper 6, including an inner cylinder 1, an outer cylinder 2, a bottom cover 3, a top cover 4, a fixing rod 5, a scraper 6, a first motor 7 and a second motor 8, wherein the inner cylinder 1 is disposed on an inner wall of the outer cylinder 2, the top cover 4 is disposed above the inner cylinder 1, the bottom cover 3 is disposed at a bottom of the inner cylinder 1, four supporting blocks 12 are fixedly disposed below the bottom cover 3, the first motor 7 is disposed below the bottom cover 3, the second motor 8 is disposed above the top cover 4, an output end of the second motor 8 is provided with a transmission shaft 10, one end of the fixing rod 5 is fixedly disposed on the transmission shaft 10, the other end of the fixing rod 5 is provided with a fixing slot 51, the fixing slot 51 corresponds to the scraper 6 in size, the scraper 6 is movably connected with the fixing rod 5 through the fixing slot 51, be equipped with integrative disconnect-type mechanism 9 on the 1 inner wall of inner tube, top cap 4 top is equipped with linkage spray mechanism 11, top cap 4 top is equipped with feed inlet 13, still be equipped with water valve 20 on the discharge gate, the fixed two fixed buckles 14 that are equipped with in top cap 4 top, two the one end of fixed buckle 14 all with second motor 8 fixed connection, two the fixed buckle 14 other end all with top cap 4 lateral wall fixed connection, 2 one side of urceolus is equipped with automatic change subassembly 15.

During operation, scraper blade 6 inserts in the fixed slot 51 that 5 one ends of dead lever correspond, thereby the output of second motor 8 begins to rotate this moment and drives transmission shaft 10 and rotate and the rotation of transmission shaft 10 drives dead lever 5 and uses transmission shaft 10 to rotate as the centre of a circle to drive scraper blade 6 and paste 1 wall of inner tube and rotate and carry out striking off of remaining cement on 1 wall of inner tube, the effectual work efficiency of remaining when the cement of section of thick bamboo wall has promoted the cement stirring when having solved the stirring.

Specifically, the integral type separating mechanism 9 includes two location fixture blocks 911, two sets of extrusion mechanisms 912, two spring posts 913, two springs 914, friction baffle 915 and support sliding block 916, two the extrusion mechanisms 912 sets up respectively at two location fixture block 911 inner walls, two the location fixture block 911 all fixes the below that sets up the one end of dead lever 5, the activity of friction baffle 915 sets up the outer wall at inner tube 1, support sliding block 916 slides and sets up the inner wall at urceolus 2, two spring posts 913 one end fixed connection are on supporting sliding block 916 surface, the friction baffle 915 is all run through to two spring posts 913 other ends, and all be equipped with the biggest moving distance stopper of restriction friction baffle 915 on the other end of two spring posts 913, two the spring 914 overlaps respectively on two spring posts 913.

During operation, insert two location fixture block 911 and carry out the extrusion to extrusion mechanism 912 after through scraper blade 6 and make extrusion mechanism 912 promote friction baffle 915 and inner tube 1 outer wall zero contact and make the integrative mechanism of disconnect-type remove the fixed to inner tube 1 outer wall, disconnect-type integrative mechanism can rotate simultaneously with scraper blade 6 this moment, extract scraper blade 6 after the work is accomplished and make scraper blade 6 remove when to extrusion mechanism 912's extrusion spring 914 kick-backs and promote friction baffle 915 and contact 2 outer walls of urceolus again, make integral type separating mechanism carry out the friction of inner tube 1 outer wall again fixed, thereby prevent the emergence displacement of the fixed fixture block when scraper blade 6 changes, finally when leading to scraper blade 6 to insert next time, unable direct counterpoint is inserted to the fixed fixture block, the convenience of this device has been improved.

Specifically, each group of the pressing mechanisms 912 comprises a pressing block 917 and a pushing block 918, the pressing block 917 is slidably disposed inside the positioning fixture block 911, the pushing block 918 is slidably connected inside the positioning fixture block 911, the pressing block 917 is in contact with the pushing block 918, an inclined surface matched with the pressing block 917 is further disposed on the pushing block 918, and the other end of the pushing block 918 is fixedly disposed on the friction baffle 915.

During operation, the one end of two extrusion pieces 917 is extruded when the scraper 6 inserts two fixed fixture blocks, make two extrusion pieces 917 outwards slide simultaneously, when extrusion piece 917 slides to and promote the contact of piece 918, make and promote piece 918 and carry out lateral shifting and promote friction baffle 915, extract scraper 6 after the work is accomplished and relieve the extrusion to extrusion piece 917, friction baffle 915 receives the elasticity resilience of spring 914 this moment, friction baffle 915 drives the one end that promotes piece 918 and carries out the return push, the inclined plane extrusion piece 917 of the other end that promotes piece 918 resets, and be provided with the baffle card under the reset state of extrusion piece 917 and live the spout, extrusion piece 917 is popped out when preventing to reset.

Specifically, two one end of each extrusion block 917 is rotatably provided with a vertical roller 919, the other end of each extrusion block 917 is rotatably provided with a horizontal roller 920, and the horizontal rollers 920 are in sliding fit with the pushing block 918.

In operation, the scraping plate 6 is inserted between one ends of the two extrusion blocks 917 and is provided with two vertical rollers 919 in the vertical direction for reducing friction, and the other ends of the two extrusion blocks 917 are provided with horizontal rollers 920 in the horizontal direction, so that friction when the scraping plate 6 contacts with the extrusion blocks 917, the extrusion blocks 917 and the pushing block 918 is reduced.

Specifically, the output end of the first motor 7 is fixedly provided with a rotating column 17, and the rotating column 17 is fixedly provided with a spiral stirring piece 18.

During operation, the output end of the first motor 7 drives the rotating column 17 to rotate, so that the rotating column drives the spiral stirring piece 18 arranged on the rotating column 17 to rotate, and cement is stirred.

Specifically, the linkage spraying mechanism 11 includes a main gear 111, two driven gears 112, two push rods 113, two fixed shafts 114, two fixed frames 116 and two high-pressure nozzles 117, the main gear 111 is fixedly disposed at an output end of the second motor 8, the main gear 111 is coaxial with the transmission shaft 10, the two driven gears 112 are respectively disposed at two sides of the main gear 111 and engaged with the main gear 111, one ends of the two push rods 113 are respectively rotatably disposed above the two driven gears 112, the other ends of the two push rods 113 are respectively rotatably connected with the two cross shafts 115, the two cross shafts 115 are rotatably disposed above the fixed frames 116, the two fixed frames 116 are hinged on an inner wall of the top cover 4 through the two fixed shafts 114, and the two groups of high-pressure nozzles 117 are respectively and fixedly connected below the two fixed frames 116.

When the automatic cleaning device works, the output end of the second motor 8 is connected with the main gear 111 and rotates by taking the output end of the second motor 8 as a circle center, the main gear 111 rotates to respectively drive the two driven gears 112 meshed with the main gear 111 to rotate, the two driven gears 112 rotate to drive one ends of the two push rods 113 to do circular motion, at the moment, the other ends of the two push rods 113 drive the cross shaft 115 to rotate around the cross shaft and simultaneously drive the upper part of the fixing frame 116 to do pendulum motion around the fixing shaft 114, so that the angle of the high-pressure spray nozzle 117 fixedly arranged below the fixing frame 116 can be automatically adjusted, the cleaning area during cleaning is increased, and the cleaning efficiency is improved.

Specifically, the automatic replacement assembly 15 comprises an air clamp 151 and a screw rod sliding table 152, clamping jaw ends of the air clamp 151 are clamped at two sides above the scraper 6, the other end of the air clamp 151 is fixedly connected with a sliding block of the screw rod sliding table 152, and a support base 19 is arranged below the screw rod sliding table 152.

When the automatic scraper mounting device works, the air clamp 151 clamps the upper part of the scraper 6 and then slowly slides upwards to completely pull out the scraper 6 from the inner barrel 1 through the movement of the slide block of the screw rod sliding table, at the moment, the output end of the third motor rotates by one hundred eighty degrees to drive the screw rod sliding table 152 and the air clamp 151 to simultaneously rotate by one hundred eighty degrees, at the moment, the slide block of the screw rod sliding table 152 drives the air clamp 151 to move downwards, after the movement is finished, the clamping jaw of the air clamp 151 loosens the clamping of the scraper 6, and when the new scraper 6 is replaced, the clamping jaw of the air clamp 151 clamps the new scraper 6, after the clamping is finished, the slide block of the screw rod sliding table 152 slowly moves upwards until the bottom of the scraper 6 is higher than the top cover 4 to stop rotating, then the output end of the third motor drives the screw rod sliding table 152 and the air clamp 151 to rotate by one hundred eighty degrees and then stop rotating, at the slide block on the screw rod sliding table 152 moves downwards to enable the scraper 6 to be inserted into the fixed clamping groove 51 of the fixed rod 5, after the scraper 6 is inserted into the fixed clamping groove 51, the clamping jaw of the air clamp 151 loosens the clamping jaw and drives the air clamp 151 to ascend to the upper part of the scraper 6 through the upward movement of the slide block of the screw rod sliding table 152, so that the phenomenon that the scraper 6 is blocked by the air clamp 151 to rotate when rotating is avoided, the scraper 6 can be automatically replaced by the automatic replacement assembly 15 after being used for a period of time, and the waste of manpower resources is reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an automatic cement mixer of cleaning blade which characterized in that: comprises an inner cylinder (1), an outer cylinder (2), a bottom cover (3), a top cover (4), a fixed rod (5), a scraper (6), a first motor (7) and a second motor (8), wherein the inner cylinder (1) is arranged on the inner wall of the outer cylinder (2), the top cover (4) is arranged above the inner cylinder (1), the bottom cover (3) is arranged at the bottom of the inner cylinder (1), four supporting blocks (12) are fixedly arranged below the bottom cover (3), the first motor (7) is arranged below the bottom cover (3), the second motor (8) is arranged above the top cover (4), a transmission shaft (10) is arranged at the output end of the second motor (8), one end of the fixed rod (5) is fixedly arranged on the transmission shaft (10), the other end of the fixed rod (5) is provided with a fixed clamping groove (51), and the fixed clamping groove (51) corresponds to the scraper (6), scraper blade (6) are through fixed slot (51) and dead lever (5) swing joint, be equipped with integrative disconnect-type mechanism (9) on inner tube (1) inner wall, top cap (4) top is equipped with linkage spray mechanism (11), top cap (4) top is equipped with feed inlet (13), still be equipped with water valve (20) on the discharge gate, top cap (4) top is fixed to be equipped with two fixed buckle (14), two the one end of fixed buckle (14) all with second motor (8) fixed connection, two fixed buckle (14) other end all with top cap (4) lateral wall fixed connection, urceolus (2) one side is equipped with automatic change subassembly (15).

2. The cement mixer with the automatic cleaning scraper as claimed in claim 1, wherein: the integrated separating mechanism (9) comprises two positioning clamping blocks (911), two groups of extrusion mechanisms (912), two spring columns (913), two springs (914), a friction baffle (915) and a support sliding block (916), wherein the two extrusion mechanisms (912) are respectively arranged on the inner walls of the two positioning clamping blocks (911), the two positioning clamping blocks (911) are fixedly arranged below one end of a fixing rod (5), the friction baffle (915) is movably arranged on the outer wall of the inner barrel (1), the support sliding block (916) is slidably arranged on the inner wall of the outer barrel (2), one ends of the two spring columns (913) are fixedly connected to the surface of the support sliding block (916), the other ends of the two spring columns (913) penetrate through the friction baffle (915), and limiting blocks for limiting the maximum moving distance of the friction baffle (913) are arranged at the other ends of the two spring columns (913), the two springs (914) are sleeved on the two spring columns (913) respectively.

3. The cement mixer with the automatic cleaning scraper as claimed in claim 2, wherein: each group of the extrusion mechanisms (912) comprises an extrusion block (917) and a pushing block (918), the extrusion block (917) is arranged inside a positioning clamping block (911) in a sliding mode, the pushing block (918) is connected inside the positioning clamping block (911) in a sliding mode, the extrusion block (917) is in contact with the pushing block (918), an inclined plane matched with the extrusion block (917) is further arranged on the pushing block (918), and the other end of the pushing block (918) is fixedly arranged on a friction baffle (915).

4. The cement mixer with the automatic cleaning scraper as claimed in claim 3, wherein: two extrusion piece (917) one end all rotates and is provided with vertical gyro wheel (919), two the extrusion piece (917) other end all rotates and is equipped with horizontal gyro wheel (920), and horizontal gyro wheel (920) is sliding fit with pushing block (918).

5. The cement mixer with the automatic cleaning scraper as claimed in claim 1, wherein: the inner cylinder (1) is provided with a discharge pipeline (16), and the discharge pipeline (16) penetrates through the outer cylinder (2).

6. The cement mixer with a self-cleaning blade according to claim 1, wherein: the output end of the first motor (7) is fixedly provided with a rotating column (17), and a spiral stirring piece (18) is fixedly arranged on the rotating column (17).

7. The cement mixer with the automatic cleaning scraper as claimed in claim 1, wherein: the linkage spraying mechanism (11) comprises a main gear (111), two driven gears (112), two pushing rods (113), two fixed shafts (114), two cross shafts (115), two fixed frames (116) and two high-pressure nozzles (117), the main gear (111) is fixedly arranged at the output end of the second motor (8), the main gear (111) is coaxial with the transmission shaft (10), the two driven gears (112) are respectively arranged at two sides of the main gear (111) and meshed with the main gear (111), one ends of the two pushing rods (113) are respectively rotatably arranged above the two driven gears (112), the other ends of the two pushing rods (113) are respectively rotatably connected with the two cross shafts (115), the two cross shafts (115) are rotatably arranged above the fixed frames (116), the two fixed frames (116) are hinged on the inner wall of the top cover (4) through the two fixed shafts (114), the two groups of high-pressure nozzles (117) are respectively and fixedly connected below the two fixing frames (116).

8. The cement mixer with the automatic cleaning scraper as claimed in claim 1, wherein: automatic change subassembly (15) and include gas clamp (151) and lead screw slip table (152), the both sides of gas clamp (151) clamping jaw end centre gripping in scraper blade (6) top, the other end of gas clamp (151) and the slider fixed connection of lead screw slip table (152), lead screw slip table (152) below is equipped with support base (19).