Cement grinding aid stirring and mixing device

Abstract

The invention relates to the technical field of cement grinding aids, and discloses a cement grinding aid stirring and mixing device which comprises a stirring barrel and a stirring shaft rotationally arranged in the stirring barrel, the stirring barrel is rotationally connected with a sleeve arranged outside the stirring shaft in a sleeving mode, and a plurality of stirring rods located in the stirring barrel are fixed to the sleeve. A water supply cavity is formed in the stirring shaft, a plurality of water outlets leading to the water supply cavity are formed in the wall face of the stirring shaft, a conveying pipe is fixed in the water supply cavity and connected with a plurality of water outlet pipes corresponding to the water outlets, and a plurality of control ports corresponding to the water outlets are formed in the sleeve. An adjusting assembly for driving the sleeve to rotate, a locking assembly for locking the sleeve and the stirring shaft and a stirring assembly for driving the connecting shaft to rotate are arranged at the bottom of the stirring barrel. The cement grinding aid cleaning device has the following advantages and effects that the residual cement grinding aid in the stirrer can be timely and efficiently cleaned, and the subsequent stirring and mixing effect of the cement grinding aid is prevented from being influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of cement grinding aids, and particularly relates to a stirring and mixing device for cement grinding aids. Background Art

[0002] A cement grinding aid is a chemical admixture. Adding a small amount during the cement grinding process can improve the grinding process. In order to improve the grinding efficiency, reduce the grinding power consumption, increase the fineness of cement grinding and the strength of cement, without changing the existing process and equipment conditions of the factory, during the grinding process, adding a small amount or a trace amount of grinding aid can affect the mechanical force of the grinding operation.

[0003] The synthesis of existing cement grinding aids is generally carried out in a mixing and stirring tank, whose function is to evenly mix raw materials such as triethanolamine, ethylene glycol, lignosulfonate, etc. to form a grinding aid product with specific chemical activity. However, the existing stirring and mixing device has the following technical problems in actual use, which may affect product quality, production efficiency and equipment life: The composition of the cement grinding aid is complex (such as containing molasses, salts, organic amines, etc.), and it is easy to adhere to the inner wall of the tank during stirring, forming hard lumps. During the next batch of production, the residues are mixed into the new materials, changing the formulation ratio (such as the deviation of triethanolamine content is ±0.2%), affecting the grinding effect, and the residual sugar substances ferment and breed microorganisms, resulting in the rancidity of the grinding aid. Summary of the Invention

[0004] The purpose of the present invention is to provide a stirring and mixing device for cement grinding aids, which has the effect of being able to clean the residual concrete inside the mixer in a timely and efficient manner.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: A stirring and mixing device for cement grinding aids includes a stirring cylinder and a stirring shaft rotatably arranged inside the stirring cylinder. The stirring cylinder is rotatably connected with a sleeve sleeved outside the stirring shaft. A plurality of stirring rods located inside the stirring cylinder are fixed on the sleeve. A scraper fitting the inner wall of the stirring cylinder is fixed between the ends of the plurality of stirring rods away from the sleeve. A water delivery cavity is arranged inside the stirring shaft, and a plurality of water outlets leading to the water delivery cavity are arranged on the wall surface of the stirring shaft. A delivery pipe is fixed inside the water delivery cavity, and the delivery pipe is connected with a plurality of water outlet pipes corresponding to the water outlets. A plurality of control ports corresponding to the water outlets are arranged on the sleeve. An adjusting component for driving the sleeve to rotate, a locking component for locking the sleeve and the stirring shaft, and a stirring component for driving the connecting shaft to rotate are arranged at the bottom of the stirring cylinder.

[0006] By adopting the above technical solution, the locking component can lock the sleeve and the stirring shaft to be relatively fixed or unlock them to rotate relatively. When the stirring shaft and the sleeve are relatively fixed, the stirring component drives the sleeve and the stirring shaft to rotate synchronously, and then the stirring shaft and the stirring rod rotate to stir and mix the cement grinding aid in the stirring cylinder. At this time, the control port and the water outlet are staggered, and the water outlet is closed, effectively protecting the water outlet and preventing the cement grinding aid from accumulating at the water outlet. When cleaning the cement grinding aid in the mixer, the locking component enables the stirring shaft and the sleeve to move relatively. The adjusting component drives the sleeve and the stirring rod to rotate, aligning the control port with the water outlet, and the water outlet is opened. Water is directly sprayed from the water outlet pipe to the inner wall of the stirring cylinder at high pressure through the delivery pipe, first flushing and softening the cement grinding aid on the inner wall of the stirring cylinder, and then fixing the sleeve and the stirring shaft again. The stirring rod and the scraper rotate to clean and scrape the residual cement grinding aid in the mixer. At the same time, the water sprayed from the water outlet is flushed along the arc shape under the rotation of the stirring shaft to the adjacent scraper, which can reduce the adhesion of the residual cement grinding aid on the scraper and effectively improve the cleaning efficiency. At the same time, the cleaning can be carried out when the stirring cylinder is in a closed state, avoiding the splashing of water with residues from the cylinder and reducing environmental pollution, making it more environmentally friendly to use.

[0007] The further setting of the present invention is that: a feed port and a discharge port are respectively arranged at the upper and lower parts of the stirring cylinder. The stirring cylinder is hinged with a cover plate covering the feed port. A first motor for driving the cover plate to rotate is installed outside the stirring cylinder. A discharge pipe is fixed at the discharge port, and a control valve is installed in the discharge pipe.

[0008] By adopting the above technical solution, the first motor controls the cover plate to rotate to open or close the feed port, and the control valve controls the material in the stirring cylinder to flow out from the discharge pipe, enabling the stirring cylinder to maintain a sealed state during the stirring work and the cleaning work, and avoiding the overflow of internal materials to pollute the surrounding environment.

[0009] The further setting of the present invention is that: the bottom of the sleeve rotates and extends out of the stirring cylinder. A fixing frame is fixed at the bottom of the stirring cylinder, and the bottom end of the stirring shaft is rotatably connected to the fixing frame.

[0010] By adopting the above technical solution, the stirring cylinder supports the rotation of the sleeve, and the fixing frame supports the rotation of the stirring shaft, improving the overall structural stability.

[0011] The further setting of the present invention is that: the stirring component includes a first gear fixed at the end of the stirring shaft, a second motor fixedly installed on the fixing frame, and a second gear fixed at the output end of the second motor and meshing with the first gear. The bottom end of the delivery pipe is fixed and passes through the stirring shaft and the first gear.

[0012] By adopting the above technical solution, when the stirring shaft and the sleeve are relatively fixed, the second motor is started to drive the second gear to rotate, and then the second gear drives the first gear meshed with it to rotate. Further, the stirring shaft, the sleeve and the stirring rod rotate synchronously to carry out the stirring work or the cleaning and scraping work, and the overall functional structure is more flexible and efficient.

[0013] The further setting of the present invention is: it further includes a water tank, the water tank is communicated with a water supply pipe, the bottom end of the conveying pipe extends out of the first gear and is rotatably connected to one end of the water supply pipe away from the water tank, a water pump is installed on the water supply pipe, a first heating pipe is wound outside the water supply pipe, a sound insulation cavity is arranged inside the wall of the stirring cylinder, and a second heating pipe is installed in the sound insulation cavity.

[0014] By adopting the above technical solution, during the cleaning work, the water pump is started to pump the water in the water tank out through the water supply pipe, and after being conveyed through the water conveying pipe and the water outlet pipe, it is sprayed out from the water outlet at high pressure to the inner wall of the stirring cylinder, preliminarily softening and flushing the residues of the cement grinding aid on the inner wall of the stirring cylinder. The first heating pipe can heat the water conveyed in the water supply pipe to improve the cleaning efficiency; the second heating pipe in the sound insulation cavity can perform secondary heating on the cement grinding aid during the stirring work or the water entering the stirring cylinder, thereby improving the performance or cleaning efficiency of the cement grinding aid. At the same time, the sound insulation cavity can effectively reduce noise and reduce the impact of the noise inside the stirring cylinder on the environment.

[0015] The further setting of the present invention is: a solar panel and a storage battery are installed on the water tank.

[0016] By adopting the above technical solution, the solar panel can convert solar energy into electrical energy in the storage battery, and the storage battery can be used to supply power to the first heating pipe and the second heating pipe for heating work, thereby reducing the energy cost.

[0017] The further setting of the present invention is: the locking assembly includes a fixing plate sleeved and fixed on the outer wall of the sleeve, a plurality of locking plates are slidably connected around the sleeve on the fixing plate, a first insertion hole is arranged on the wall surface of the sleeve, a second insertion hole corresponding to the first insertion hole is arranged on the wall surface of the stirring shaft, and a driving device for driving the locking plate to slide through the first insertion hole and the second insertion hole is installed on the fixing plate.

[0018] By adopting the above technical solution, when the driving device drives the locking plate to slide and the locking plate is slidably inserted between the first insertion hole and the second insertion hole, the sleeve and the stirring shaft can be in a locked and fixed state, that is, when the stirring shaft rotates, it can drive the sleeve, the stirring rod and the scraper to rotate synchronously; when the driving device drives the locking plate to slide out from between the first insertion hole and the second insertion hole, the sleeve and the stirring shaft can be in an active state, that is, the adjusting assembly can drive the sleeve to rotate relative to the stirring shaft, so that the control port is aligned with the water outlet to open the water outlet, or the control port and the water outlet are staggered to close the water outlet.

[0019] A further setting of the present invention is that: the driving device includes a third gear sleeved on the outer wall of the sleeve and rotatably connected to the fixed plate, a third motor fixedly installed on the fixed plate, and a fourth gear fixed to the output end of the third motor and meshing with the third gear. A plurality of limiting holes inclined towards the center of the third gear are provided on the third gear, and a limiting rod inserted into the limiting holes is fixed on the locking plate.

[0020] By adopting the above technical solution, when the third motor is started, the output end of the third motor drives the fourth gear to rotate, and then the fourth gear drives the meshing third gear to rotate. The rotation of the third gear pushes the limiting rod and the locking plate to slide through the limiting holes, so that the locking plate slides forward and inserts into the first jack and the second jack, or the locking plate retreats and is withdrawn from between the first jack and the second jack.

[0021] A further setting of the present invention is that: a sliding groove for the locking plate to slide is fixed on the fixed plate, and a sliding hole pointing to the center of the sleeve is provided in the sliding groove. The limiting rod slides through the sliding hole and the limiting hole.

[0022] By adopting the above technical solution, the locking plate slides on the fixed plate through the sliding groove and the sliding hole, effectively improving the sliding and inserting stability of the locking plate.

[0023] A further setting of the present invention is that: the adjusting assembly includes a rotating cylinder rotatably connected to the fixed frame. The sleeve is located in the middle of the rotating cylinder, and an adjusting plate is fixedly sleeved outside the sleeve. A toothed ring is fixed on the outer wall surface of the rotating cylinder. The fixed frame is fixedly installed with a fourth motor, and a fifth gear meshing with the toothed ring is fixed to the output end of the fourth motor. Inner ratchet teeth are provided on the inner wall surface of the toothed ring. A plurality of pawls cooperating with the inner ratchet teeth are hinged on the adjusting plate, and an elastic member is fixed between the pawl and the adjusting plate to support the pawl in contact with the inner ratchet teeth.

[0024] By adopting the above technical solution, when the sleeve and the stirring shaft rotate synchronously relative to each other, the sleeve drives the pawls on the adjusting plate to rotate synchronously. At this time, the inclined surfaces of the pawls are in contact with the inclined surfaces of the inner ratchet teeth, and the pawls are pressed back, so that the elastic member is in a compressed state; when the sleeve and the stirring shaft can rotate relative to each other, the fourth motor is started to drive the fifth gear to rotate, and then the fifth gear drives the toothed ring and the rotating cylinder to rotate on the fixed frame. When the rotating cylinder rotates, the flat surfaces of the inner ratchet teeth are in contact with the flat surfaces of the pawls to push the pawls, the adjusting plate and the sleeve to rotate, and the sleeve rotates relative to the stirring shaft, thereby adjusting and controlling the relative position of the control port and the water outlet; the elastic member can be set as a torsion spring, a spring or a leaf spring.

[0025] The beneficial effects of the present invention are:

[0026] 1. When cleaning the cement grinding aid in the mixer, the locking component enables relative movement between the stirring shaft and the sleeve. The adjusting component drives the sleeve and the stirring rod to rotate, aligning the control port with the water outlet to open the water outlet. Water in the water tank can be directly ejected under high pressure through the delivery pipe from the water outlet pipe to the inner wall of the mixing drum, first flushing and softening the cement grinding aid on the inner wall of the mixing drum, then fixing the sleeve and the stirring shaft again. The stirring rod and the scraper rotate to clean and scrape off the hard residual cement grinding aid in the mixer, which can reduce the adhesion of the residual cement grinding aid on the scraper while effectively improving the cleaning efficiency;

[0027] 2. The locking component can lock the sleeve and the stirring shaft in a relatively fixed state or unlock their relative rotational movement. When the stirring shaft and the sleeve are relatively fixed, the stirring component drives the sleeve and the stirring shaft to rotate synchronously. Then, the stirring shaft and the stirring rod rotate to stir the cement grinding aid in the mixing drum. At this time, the control port and the water outlet are staggered, and the water outlet is closed, effectively protecting the water outlet and preventing the accumulation of cement grinding aid at the water outlet;

[0028] 3. The first motor controls the cover plate to rotate to open or close the feed port, and the control valve controls the material in the mixing drum to flow out from the discharge pipe, which can keep the mixing drum sealed during the stirring and cleaning operations, preventing the internal material from overflowing and polluting the surrounding environment, making it more environmentally friendly to use;

[0029] 4. The first heating pipe can heat the water conveyed in the water supply pipe to improve the cleaning efficiency; the second heating pipe in the sound insulation cavity can secondarily heat the cement grinding aid during the stirring operation or the water entering the mixing drum, thereby improving the performance of the cement grinding aid or the cleaning efficiency. At the same time, the sound insulation cavity can effectively reduce noise and minimize the impact of the internal noise of the mixing drum on the environment;

[0030] 5. The solar panel can convert solar energy into electrical energy in the storage battery, and the storage battery can be used to power the first heating pipe and the second heating pipe for heating work, thereby reducing the energy cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0032] Figure 1 It is a schematic structural diagram of the present invention.

[0033] Figure 2 It is a schematic side sectional structural diagram of the present invention.

[0034] Figure 3 isFigure 2 Enlarged view of part A in

[0035] Figure 4 Schematic diagram of the connection relationship among the sleeve, stirring shaft, adjusting assembly, locking assembly and stirring assembly in the present invention.

[0036] Figure 5 is Figure 4 Enlarged view of part B in

[0037] Figure 6 Schematic diagram of the connection relationship among the adjusting assembly, locking assembly and stirring assembly in the present invention.

[0038] Figure 7 Schematic diagram of the front view sectional structure in the present invention.

[0039] Figure 8 is Figure 7 Enlarged view of part C in

[0040] In the figure, 1, stirring barrel; 2, stirring shaft; 3, sleeve; 4, stirring rod; 5, scraper; 6, water delivery cavity; 7, adjusting assembly; 71, rotating cylinder; 72, adjusting plate; 73, toothed ring; 74, fourth motor; 75, fifth gear; 76, inner ratchet teeth; 77, ratchet pawl; 78, elastic member; 8, locking assembly; 81, fixing plate; 82, locking plate; 83, first jack; 84, second jack; 85, driving device; 851, third gear; 852, third motor; 853, fourth gear; 854, limiting hole; 855, limiting rod; 86, sliding groove; 87, sliding hole; 9, stirring assembly; 91, first gear; 92, second motor; 93, second gear; 10, control port; 11, water outlet; 12, delivery pipe; 13, water discharge pipe; 14, feed inlet; 15, discharge outlet; 16, cover plate; 17, first motor; 18, discharge pipe; 19, fixing frame; 20, water tank; 21, water supply pipe; 22, water pump; 23, first heating pipe; 24, sound insulation cavity; 25, second heating pipe; 26, solar panel. Specific embodiments

[0041] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] Embodiment 1, a cement grinding aid stirring and mixing device, as Figures 1-3As shown in the figure, it includes a mixing drum 1 and a mixing shaft 2 rotatably arranged inside the mixing drum 1. The mixing drum 1 is rotatably connected with a sleeve 3 sleeved outside the mixing shaft 2. A plurality of mixing rods 4 located inside the mixing drum 1 are fixed on the sleeve 3. A scraping plate 5 attached to the inner wall of the mixing drum 1 is fixed between the ends of the plurality of mixing rods 4 far away from the sleeve 3. A water delivery cavity 6 is arranged inside the mixing shaft 2. A plurality of water outlets 11 leading to the water delivery cavity 6 are arranged on the wall surface of the mixing shaft 2. A delivery pipe 12 is fixed inside the water delivery cavity 6. The delivery pipe 12 is connected with a plurality of water outlet pipes 13 corresponding to the water outlets 11. A plurality of control ports 10 corresponding to the water outlets 11 are arranged on the sleeve 3. An adjusting assembly 7 for driving the sleeve 3 to rotate, a locking assembly 8 for locking the sleeve 3 and the mixing shaft 2, and a mixing assembly 9 for driving the connecting shaft to rotate are arranged at the bottom of the mixing drum 1.

[0043] As Figure 1 , 2 As shown in FIGS. 7, a feed inlet 14 and a discharge outlet 15 are respectively arranged at the upper and lower parts of the mixing drum 1. The mixing drum 1 is hinged with a cover plate 16 covering the feed inlet 14. A first motor 17 for driving the cover plate 16 to rotate is installed outside the mixing drum 1. A discharge pipe 18 is fixed at the discharge outlet 15. A control valve is installed inside the discharge pipe 18. The first motor 17 controls the cover plate 16 to rotate to open or close the feed inlet 14, and the control valve controls the material inside the mixing drum 1 to flow out from the discharge pipe 18, which can keep the inside of the mixing drum 1 sealed during the mixing work and the cleaning work, and avoid the internal material from overflowing and polluting the surrounding environment.

[0044] As Figure 7 , 8 As shown in FIGS. 14, the bottom of the sleeve 3 rotatably extends out of the mixing drum 1. A fixing frame 19 is fixed at the bottom of the mixing drum 1. The bottom end of the mixing shaft 2 is rotatably connected to the fixing frame 19. The mixing drum 1 supports the rotation of the sleeve 3, and the fixing frame 19 supports the rotation of the mixing shaft 2.

[0045] As Figure 4 , 5 As shown in FIGS. 21 and 6, the mixing assembly 9 includes a first gear 91 fixed at the end of the mixing shaft 2, a second motor 92 fixedly installed on the fixing frame 19, and a second gear 93 fixed at the output end of the second motor 92 and meshing with the first gear 91. The bottom end of the delivery pipe 12 is fixed and passes through the mixing shaft 2 to the first gear 91. When the mixing shaft 2 and the sleeve 3 are relatively fixed, the second motor 92 is started to drive the second gear 93 to rotate, and then the second gear 93 drives the first gear 91 meshing with it to rotate, and then the mixing shaft 2, the sleeve 3 and the mixing rods 4 rotate synchronously to carry out the mixing work or the cleaning and scraping work.

[0046] As Figure 1As shown in the figure, it further includes a water tank 20. The water tank 20 is connected with a water supply pipe 21. The bottom end of the conveying pipe 12 extends out of the first gear 91 and is rotatably connected to one end of the water supply pipe 21 away from the water tank 20. A water pump 22 is installed on the water supply pipe 21. A first heating pipe 23 is wound around the outside of the water supply pipe 21. A sound insulation cavity 24 is provided inside the wall of the mixing drum 1. A second heating pipe 25 is installed in the sound insulation cavity 24. During the cleaning work, the water pump 22 is started to pump the water in the water tank 20 out through the water supply pipe 21, and after being conveyed through the water delivery pipe and the water outlet pipe 13, it is sprayed at high pressure from the water outlet 11 to the inner wall of the mixing drum 1 to initially wash the residues of the cement grinding aid on the inner wall of the mixing drum 1. The first heating pipe 23 can heat the water conveyed in the water supply pipe 21 to improve the cleaning efficiency; the second heating pipe 25 in the sound insulation cavity 24 can perform secondary heating on the cement grinding aid during the mixing work or the water entering the mixing drum 1, thereby improving the performance of the cement grinding aid or the cleaning efficiency. At the same time, the sound insulation cavity 24 can effectively reduce noise and reduce the impact of the noise inside the mixing drum 1 on the environment.

[0047] As Figure 1 shown, a solar panel 26 and a storage battery are installed on the water tank 20. The solar panel 26 can convert solar energy into electrical energy in the storage battery, and the storage battery can be used to supply power to the first heating pipe 23 and the second heating pipe 25 for heating work.

[0048] As Figure 4 、 5 、6, 8 shown, the locking assembly 8 includes a fixing plate 81 sleeved and fixed on the outer wall of the sleeve 3. A plurality of locking plates 82 are slidably connected around the sleeve 3 on the fixing plate 81. The first jack 83 is provided on the wall surface of the sleeve 3, and the second jack 84 corresponding to the first jack 83 is provided on the wall surface of the stirring shaft 2. A driving device 85 for driving the locking plate 82 to slide through the first jack 83 and into the second jack 84 is installed on the fixing plate 81. When the driving device 85 drives the locking plate 82 to slide and the locking plate 82 is slidably inserted between the first jack 83 and the second jack 84, the sleeve 3 and the stirring shaft 2 can be in a locked and fixed state, that is, when the stirring shaft 2 rotates, it can drive the sleeve 3, the stirring rod 4 and the scraper 5 to rotate synchronously; when the driving device 85 drives the locking plate 82 to slide out from between the first jack 83 and the second jack 84, the sleeve 3 and the stirring shaft 2 can be in an active state, that is, the adjusting assembly 7 can drive the sleeve 3 to rotate relative to the stirring shaft 2, so that the control port 10 is aligned with the water outlet 11 to open the water outlet 11, or the control port 10 and the water outlet 11 are staggered to close the water outlet 11.

[0049] As Figure 4 、 5As shown in FIGS. 6, the driving device 85 includes a third gear 851 sleeved on the outer wall of the sleeve 3 and rotatably connected to the fixing plate 81, a third motor 852 fixedly installed on the fixing plate 81, and a fourth gear 853 fixed to the output end of the third motor 852 and meshing with the third gear 851. A plurality of limiting holes 854 inclined towards the center of the third gear 851 are provided on the third gear 851. A limiting rod 855 inserted into the limiting holes 854 is fixed to the locking plate 82. When the third motor 852 is started, the output end of the third motor 852 drives the fourth gear 853 to rotate. Then, the fourth gear 853 drives the meshing third gear 851 to rotate. The rotation of the third gear 851 pushes the limiting rod 855 and the locking plate 82 to slide through the limiting holes 854, so that the locking plate 82 slides forward and inserts into the first jack 83 and the second jack 84, or the locking plate 82 retracts and is withdrawn from between the first jack 83 and the second jack 84.

[0050] As Figure 8 shown, a sliding groove 86 for the locking plate 82 to slide is fixed on the fixing plate 81, and a sliding hole 87 pointing to the center of the sleeve 3 is provided in the sliding groove 86. The limiting rod 855 is inserted and slides between the sliding hole 87 and the limiting holes 854. The locking plate 82 slides on the fixing plate 81 through the sliding groove 86 and the sliding hole 87, effectively improving the sliding and inserting stability of the locking plate 82.

[0051] As Figure 4 、 5 、6 shown, the adjusting assembly 7 includes a rotating cylinder 71 rotatably connected to the fixing frame 19. The sleeve 3 is located in the middle of the rotating cylinder 71, and an adjusting plate 72 is sleeved and fixed outside the sleeve 3. A toothed ring 73 is fixed on the outer wall surface of the rotating cylinder 71. The fixing frame 19 is fixedly installed with a fourth motor 74. The output end of the fourth motor 74 is fixed with a fifth gear 75 meshing with the toothed ring 73. Inner ratchet teeth 76 are provided on the inner wall surface of the toothed ring 73. A plurality of pawls 77 cooperating with the inner ratchet teeth 76 are hinged to the adjusting plate 72. An elastic member 78 is fixed between the pawl 77 and the adjusting plate 72 to support the contact between the pawl 77 and the inner ratchet teeth 76. When the sleeve 3 and the stirring shaft 2 rotate synchronously relative to each other, the sleeve 3 drives the pawl 77 on the adjusting plate 72 to rotate synchronously. At this time, the inclined surface of the pawl 77 contacts the inclined surface of the inner ratchet teeth 76, and the pawl 77 is pressed back, so that the elastic member 78 is in a compressed state; when the sleeve 3 and the stirring shaft 2 can rotate relative to each other, the fourth motor 74 is started to drive the fifth gear 75 to rotate. Then, the fifth gear 75 drives the toothed ring 73 and the rotating cylinder 71 to rotate on the fixing frame 19. When the rotating cylinder 71 rotates, the flat surface of the inner ratchet teeth 76 contacts the flat surface of the pawl 77 and pushes the pawl 77, the adjusting plate 72 and the sleeve 3 to rotate. The sleeve 3 rotates relative to the stirring shaft 2, and then the relative position of the adjusting control port 10 and the water outlet 11 is adjusted and controlled.

[0052] Working principle: When carrying out the stirring work of the cement grinding aid, start the third motor 852. The output end of the third motor 852 drives the fourth gear 853 to rotate. Further, the fourth gear 853 drives the third gear 851 meshing with it to rotate. The rotation of the third gear 851 pushes the limit rod 855 and the locking plate 82 to slide through the limit hole 854, so that the locking plate 82 slides forward and inserts between the first jack 83 and the second jack 84, enabling the sleeve 3 and the stirring shaft 2 to be in a locked and fixed state. Start the second motor 92 to drive the second gear 93 to rotate. Further, the second gear 93 drives the first gear 91 meshing with it to rotate. Further, the stirring shaft 2, the sleeve 3, the stirring rod 4, and the scraper 5 rotate synchronously to carry out the stirring work.

[0053] When carrying out the cleaning work, start the third motor 852. The output end of the third motor 852 drives the fourth gear 853 to rotate. Further, the fourth gear 853 drives the third gear 851 meshing with it to rotate. The rotation of the third gear 851 pushes the limit rod 855 and the locking plate 82 to slide through the limit hole 854, so that the locking plate 82 retracts and is withdrawn from between the first jack 83 and the second jack 84, enabling the sleeve 3 and the stirring shaft 2 to be in a movable state, that is, the adjusting assembly 7 can drive the sleeve 3 to rotate relative to the stirring shaft 2. At this time, start the fourth motor 74 to drive the fifth gear 75 to rotate. Further, the fifth gear 75 drives the toothed ring 73 and the rotary drum 71 to rotate on the fixed frame 19. When the rotary drum 71 rotates, the flat surface of the inner ratchet tooth 76 contacts the flat surface of the pawl 77 and pushes the pawl 77, the adjusting plate 72, and the sleeve 3 to rotate. The sleeve 3 rotates relative to the stirring shaft 2, and further adjusts the relative position of the control port 10 and the water outlet 11. When the control port 10 is aligned with the water outlet 11, the water outlet 11 is opened. Start the water pump 22 to extract the water in the water tank 20 through the water supply pipe 21, and after being transported through the water delivery pipe and the water outlet pipe 13, it is sprayed at high pressure from the water outlet 11 to the inner wall of the stirring cylinder 1 to initially wash the residues of the cement grinding aid on the inner wall of the stirring cylinder 1. The first heating pipe 23 can heat the water transported in the water supply pipe 21 to improve the cleaning efficiency. Then, the locking assembly 8 makes the sleeve 3 and the stirring shaft 2 relatively fixed, and the stirring rod 4 and the scraper 5 rotate to clean and scrape the hard residual cement grinding aid in the mixer, which can reduce the adhesion of the residual cement grinding aid on the scraper 5 while effectively improving the cleaning efficiency.

[0054] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cement grinding aid stirring and mixing device, comprising a stirring cylinder (1) and a stirring shaft (2) rotatably arranged in the stirring cylinder (1), characterized in that: The mixing drum (1) is rotatably connected to a sleeve (3) sleeved outside the mixing shaft (2). A plurality of mixing rods (4) located inside the mixing drum (1) are fixed on the sleeve (3). A scraping plate (5) attached to the inner wall of the mixing drum (1) is fixed between the ends of the plurality of mixing rods (4) away from the sleeve (3). A water delivery chamber (6) is provided inside the mixing shaft (2). A plurality of water outlets (11) leading to the water delivery chamber (6) are provided on the wall surface of the mixing shaft (2). A delivery pipe (12) is fixed inside the water delivery chamber (6). The delivery pipe (12) is connected to a plurality of water outlet pipes (13) corresponding to the water outlets (11). A plurality of control ports (10) corresponding to the water outlets (11) are provided on the sleeve (3). An adjusting assembly (7) for driving the sleeve (3) to rotate, a locking assembly (8) for locking the sleeve (3) and the mixing shaft (2), and a mixing assembly (9) for driving the connecting shaft to rotate are provided at the bottom of the mixing drum (1).

2. The cement grinding aid stirring and mixing device according to claim 1, characterized in that: The mixing drum (1) is respectively provided with a feed inlet (14) and a discharge outlet (15) at the upper and lower parts. The mixing drum (1) is hinged with a cover plate (16) covering the feed inlet (14). A first motor (17) for driving the cover plate (16) to rotate is installed outside the mixing drum (1). A discharge pipe (18) is fixed at the discharge outlet (15). A control valve is installed inside the discharge pipe (18).

3. A cement grinding aid stirring and mixing device according to claim 1, characterized in that: The bottom of the sleeve (3) rotatably extends out of the mixing drum (1). A fixing frame (19) is fixed at the bottom of the mixing drum (1). The bottom end of the mixing shaft (2) is rotatably connected to the fixing frame (19).

4. A cement grinding aid stirring and mixing device according to claim 3, characterized in that: The mixing assembly (9) includes a first gear (91) fixed at the end of the mixing shaft (2), a second motor (92) fixedly installed on the fixing frame (19), and a second gear (93) fixed at the output end of the second motor (92) and meshing with the first gear (91). The bottom end of the delivery pipe (12) is fixed and passes through the mixing shaft (2) and the first gear (91).

5. A cement grinding aid stirring and mixing device according to claim 4, characterized in that: It further includes a water tank (20). The water tank (20) is communicated with a water delivery pipe (21). The bottom end of the delivery pipe (12) extends out of the first gear (91) and is rotatably connected to one end of the water delivery pipe (21) away from the water tank (20). A water pump (22) is installed on the water delivery pipe (21). A first heating pipe (23) is wound outside the water delivery pipe (21). A sound insulation chamber (24) is provided inside the wall of the mixing drum (1). A second heating pipe (25) is installed inside the sound insulation chamber (24).

6. The cement grinding aid stirring and mixing device according to claim 5, characterized in that: A solar panel (26) and a storage battery are installed on the water tank (20).

7. A cement grinding aid stirring and mixing device according to claim 3, characterized in that: The locking assembly (8) includes a fixing plate (81) sleeved and fixed on the outer wall of the sleeve (3). A plurality of locking plates (82) are slidably connected around the sleeve (3) on the fixing plate (81). A first insertion hole (83) is provided on the wall surface of the sleeve (3), and a second insertion hole (84) corresponding to the first insertion hole (83) is provided on the wall surface of the stirring shaft (2). A driving device (85) for driving the locking plate (82) to slide through the first insertion hole (83) and the second insertion hole (84) is installed on the fixing plate (81).

8. A cement grinding aid stirring and mixing device according to claim 7, characterized in that: The driving device (85) includes a third gear (851) rotatably connected to the fixing plate (81) and sleeved on the outer wall of the sleeve (3), a third motor (852) fixedly installed on the fixing plate (81), and a fourth gear (853) fixed to the output end of the third motor (852) and meshing with the third gear (851). A plurality of limiting holes (854) inclined towards its center are provided on the third gear (851), and a limiting rod (855) embedded in the limiting holes (854) is fixed on the locking plate (82).

9. A cement grinding aid stirring and mixing device according to claim 8, characterized in that: A sliding groove (86) for the locking plate (82) to slide is fixed on the fixing plate (81), and a sliding hole (87) pointing to the center of the sleeve (3) is provided in the sliding groove (86). The limiting rod (855) slides between the sliding hole (87) and the limiting holes (854).

10. A cement grinding aid stirring and mixing device according to claim 3, characterized in that: The adjusting assembly (7) includes a rotating cylinder (71) rotatably connected to the fixing frame (19). The sleeve (3) is located in the middle of the rotating cylinder (71), and an adjusting plate (72) is sleeved and fixed outside the sleeve (3). A toothed ring (73) is fixed on the outer wall surface of the rotating cylinder (71). The fixing frame (19) is fixedly installed with a fourth motor (74). A fifth gear (75) meshing with the toothed ring (73) is fixed to the output end of the fourth motor (74). Inner ratchet teeth (76) are provided on the inner wall surface of the toothed ring (73). A plurality of pawls (77) cooperating with the inner ratchet teeth (76) are hinged to the adjusting plate (72). An elastic member (78) is fixed between the pawl (77) and the adjusting plate (72) to support the contact between the pawl (77) and the inner ratchet teeth (76).

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