Premixing mechanism for concrete production and processing

Abstract

The invention relates to the technical field of concrete processing equipment, and particularly discloses a premixing mechanism for concrete production and processing, which comprises a mixing drum and a charging drum, the mixing drum and the charging drum are both provided with a feed port and a discharge port, the side wall of the mixing drum is provided with a charging hole, the charging drum is fixedly connected with the mixing drum, and the premixing mechanism further comprises a mixing mechanism arranged in the mixing drum; the stirring mechanism comprises a screening plate, a rotating shaft, a crushing cutter, a feeding assembly, a plurality of stirring blocks fixedly connected to the rotating shaft at equal intervals in the axial direction of the rotating shaft, and a driving assembly used for driving the rotating shaft to rotate; the screening plate is fixedly connected with the stirring barrel; the rotating shaft is rotationally connected with the screening plate; the crushing cutters are fixedly connected with the rotating shaft; the screening plate is positioned between the crushing cutter and the stirring block; the feeding assembly comprises an arc-shaped barrel, a baffle used for sealing the feeding hole and a power assembly used for driving the baffle to do intermittent reciprocating motion in the arc length direction of the arc-shaped barrel. The pre-mixing device solves the problem that existing pre-mixing equipment cannot be used for pre-treating large-size sand-gravel materials.

Description

Technical Field

[0001] The present application relates to the technical field of concrete processing equipment, and specifically discloses a premixing mechanism for concrete production and processing. Background Art

[0002] Concrete refers to cement concrete obtained by mixing cement as a gelling material, sand and stone as raw materials with water (which may contain admixtures and additives) in a certain proportion and stirring. It is also called ordinary concrete. At the same time, when processing concrete, various raw materials need to be pre-mixed, so pre-mixing equipment is needed; when existing pre-mixing equipment mixes various raw materials, it is often the case that a motor drives the stirring shaft to rotate to achieve the purpose of stirring, and the pre-mixing equipment is generally added to the cylinder. Due to gravity, the raw materials will accumulate at the bottom, and the stirring shaft generally rotates in a horizontal direction, which cannot quickly and fully stir and mix the various raw materials of the concrete inside the entire device. The mixing time is long and the mixing efficiency is low.

[0003] To solve the above problems, a Chinese patent with publication number CN219902726U discloses a premixing device for concrete production and processing, including a cylinder and a connector fixedly connected at its ends, a feeding cylinder b and a feeding cylinder a are arranged on the connector, a plurality of support frames are fixedly connected to the lower end of the cylinder, the cylinder is inclined, and a mixing cylinder is connected to the cylinder for limited rotation inside, a driving assembly is installed at the lower end of the cylinder, an external tooth is arranged around the middle of the outer side of the mixing cylinder, the driving assembly cooperates with the external tooth to realize the rotation of the mixing cylinder, and a blocking structure is arranged at the lower end of the cylinder. The device cooperates with the feeding cylinder a and the feeding cylinder b by arranging an inclined mixing cylinder, so that different raw materials can be mixed and added when added, and then the mixing cylinder is rotated for mixing and stirring, thereby avoiding the accumulation of raw materials at the bottom of the mixing cylinder, so that different raw materials can be mixed and stirred more fully, thereby enhancing the mixing effect and improving the mixing efficiency.

[0004] The above-mentioned device has the following problems during actual use: when adding sand and gravel to the device, some of the sand and gravel will be in a lumpy state or the size of the sand and gravel itself is large, which does not meet the size required when mixing sand and gravel with cement, resulting in poor stirring effect and low stirring efficiency when mixing sand and gravel with cement, thereby causing uneven mixing of raw materials; and, if workers use a crushing device alone to crush the sand and gravel, and then transfer them to the feeding barrel after crushing, the operation is more complicated, and during the transfer, the gravel may fall, thereby reducing the utilization rate of the gravel. Summary of the invention

[0005] The invention provides a premixing mechanism for concrete production and processing, so as to solve the problem that the existing premixing equipment cannot preprocess sand and gravel with larger sizes.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a premixing mechanism for concrete production and processing, comprising a mixing drum and a feeding drum, both of which are provided with a feed port and a discharge port, a feeding hole is provided on the side wall of the mixing drum, the feeding drum is fixedly connected to the mixing drum, the feeding drum is communicated with the feeding hole, and also comprises a mixing mechanism arranged in the mixing drum; the mixing mechanism comprises a screening plate, a rotating shaft, a crushing knife, a feeding assembly, a plurality of mixing blocks fixedly connected to the rotating shaft at equal distances along the axial direction of the rotating shaft, and a driving assembly for driving the rotating shaft to rotate; the screening plate is fixedly connected to the mixing drum; the rotating shaft is rotatably connected to the screening plate; the crushing knife is fixedly connected to the rotating shaft; the screening plate is located between the crushing knife and the mixing block; the feeding assembly comprises an arc-shaped barrel, a baffle for sealing the feeding hole, and a power assembly for driving the baffle to make intermittent reciprocating motion along the arc length direction of the arc-shaped barrel; the arc-shaped barrel is fixedly connected to the mixing drum; the baffle is slidably connected to the arc-shaped barrel.

[0007] The principles and advantages of this solution are:

[0008] 1. Use a crushing knife to crush the sand and gravel on the screen plate, so that the sand and gravel are broken into several particles, and screened through the screen plate, so that the particles with qualified particle size fall through the screen plate, and the particles with unqualified particle size are retained on the screen plate, so that they are broken by the crushing knife again until the particle size is qualified.

[0009] Through the above movement, under the joint action of the crushing knife and the screening plate, the pre-processing of the sand and gravel is completed, so that the particle size of the sand and gravel becomes smaller, thereby preparing for the subsequent stirring and mixing, providing stirring convenience, and then promoting the stirring efficiency of the stirring block.

[0010] 2. During the falling of sand and gravel, the baffle is driven by the power component to make intermittent reciprocating motion, so that the cement mixture in the feeding barrel can be quantitatively dropped into the mixing barrel, without manual operation, which simplifies the work process, saves unnecessary troubles for workers, and brings convenience to workers. That is, by pre-processing the particle size of sand and gravel and controlling the feeding speed of cement mixture, the automatic feeding of raw materials is realized, which provides a strong guarantee for the orderly mixing of the mixing block. That is, the workload of the mixing block during mixing is reduced, and the mixing block will not mix a large amount of materials at one time, which improves the working efficiency of the mixing block.

[0011] In summary, through the joint action of the crushing knife, screening plate, baffle and stirring block, the pre-processing of sand and gravel, the quantitative feeding of cement mixture and the full mixing of raw materials in the mixing drum are completed. The workflow is simplified, and the pre-processing, feeding and mixing operations are integrated. On the one hand, it ensures that the sand and gravel can be crushed more comprehensively and fully, and the crushing efficiency is improved. On the other hand, it enhances the stirring effect of the stirring block, ensuring that the stirring block can fully, evenly and comprehensively mix the raw materials.

[0012] Furthermore, it also includes an auxiliary component; the auxiliary component includes a fixed block, a connecting block, an auxiliary shaft, a first cam, a guide block, a vibrating block, a first spring, and a motion unit for driving the auxiliary shaft to rotate; the fixed block and the connecting block are both fixedly connected to the rotating shaft; the auxiliary shaft is rotatably connected to the fixed block; the first cam is fixedly connected to the auxiliary shaft; the guide block is fixedly connected to the connecting block; the vibrating block is vertically slidably connected to the guide block, and the bottom of the screening plate is located on the motion trajectory of the vibrating block; the first cam is against the vibrating block; and the two ends of the first spring are respectively connected to the vibrating block and the guide block.

[0013] The vibration block can make vertical reciprocating motion under the joint action of the first cam and the first spring. During the movement of the vibration block, when the vibration block collides with the screening plate, the screening plate vibrates; during the vibration of the screening plate, the screening plate can cause the sand and gravel blocked in the screening plate to make vertical reciprocating motion, and finally fall somewhere on the screening plate, thereby changing the position of the sand and gravel on the screening plate, thereby ensuring that the sand and gravel will not be blocked in the screening plate, enhancing the screening effect of the screening plate, and improving the screening capacity of the screening plate, that is, the screening plate can continuously and efficiently screen the sand and gravel with qualified particle size.

[0014] Moreover, since the vibration block can also make circumferential motion, the action range of the vibration block is expanded, and the effect of the vibration block on the screening plate is further enhanced, that is, the screening efficiency of the screening plate for sand and gravel is comprehensively improved.

[0015] Furthermore, the auxiliary component also includes an auxiliary part; the auxiliary part includes a vertical block and several auxiliary units equidistantly arranged along the length direction of the vertical block; the auxiliary unit includes a concave block, an auxiliary block, a second spring, and several throwing blocks equidistantly fixed along the length direction of the auxiliary block; the concave block is fixed to the rotating shaft; the auxiliary blocks are vertically slidably connected to the concave blocks, and the auxiliary block is located between two adjacent stirring blocks; the two ends of the second spring are respectively connected to the auxiliary block and the concave block; the several auxiliary blocks are all fixed to the vertical block; and the first cam is against the vertical block.

[0016] During the vertical reciprocating motion of the throwing block, on the one hand, the raw materials can be turned over in the vertical direction so that the raw materials can be evenly distributed in the mixing drum, thereby expanding the mixing range of the stirring block on the raw materials and enhancing the mixing effect on the raw materials; on the other hand, the raw materials can have a certain fluidity in the vertical direction, so that the raw materials can constantly change their position in the vertical direction, that is, the stirring block can stir the raw materials in the mixing drum more comprehensively, further enhancing the stirring effect on the raw materials and improving the quality of stirring and mixing.

[0017] Furthermore, the rotating shaft is a hollow tube; the auxiliary block is a conduit; the hollow tube extends out of the mixing drum; a water tank is fixedly connected to the top of the outer wall of the mixing drum; a water outlet pipe is connected to the water tank; the free end of the water outlet pipe faces the hollow tube; it also includes a plurality of linkage parts equidistantly arranged along the axial direction of the hollow tube; the linkage part includes a piston cylinder, a piston block, a first wedge block, a third spring, a hose, and a plurality of second wedge blocks fixedly connected at equal distances along the length direction of the concave block; the piston cylinder is fixedly connected to the inner wall of the conduit; the piston block is slidingly connected to the piston cylinder and the conduit respectively; the two ends of the third spring are respectively connected to the piston block and the piston cylinder; the first wedge block is fixedly connected to the piston block, and the second wedge block is located on the movement trajectory of the first wedge block; the piston cylinder is respectively connected to the liquid inlet pipe and the water outlet pipe; the two ends of the hose are respectively connected to the hollow tube and the conduit; a plurality of water outlet holes are opened at equal distances along the length direction of the conduit; the water outlet holes are located at the bottom of the conduit.

[0018] After the liquid flows into the conduit through the hollow tube and the hose, the liquid is finally discharged from the water outlet. During the flow of the liquid, the conduit can also make vertical reciprocating motion, thereby expanding the scope of action of the liquid in the raw material, so that the raw material can be mixed with the liquid more evenly during the stirring of the raw material, and the speed of mixing the raw material and the liquid is promoted. That is, by changing the flow mode of the liquid, the raw material can be mixed with the liquid at the same time during the stirring and mixing, which further simplifies the work process, shortens the processing time of concrete, and improves the production efficiency of concrete.

[0019] While the liquid is flowing in the conduit, the reciprocating motion of the piston block can pressurize the liquid, thereby ensuring that the liquid flowing out of the water outlet has a faster flow rate and a longer distance, that is, the flow range of the liquid is expanded, ensuring that the liquid can flow evenly in the raw material, thereby promoting the efficient production and processing of concrete.

[0020] Furthermore, the linkage part also includes a linkage unit; the linkage unit includes a linkage block and a plurality of linkage hole groups equidistantly opened on the linkage block along the length direction of the linkage block; the linkage block is slidably connected to the piston cylinder, the linkage block is fixedly connected to the piston block, and the linkage block is in contact with the bottom of the inner wall of the catheter; the linkage hole group includes a plurality of linkage holes; the diameters of the plurality of linkage holes gradually increase in the direction away from the piston cylinder; and the water outlet hole is located on the movement trajectory of the linkage hole.

[0021] During the period when the piston cylinder pressurizes the liquid in the conduit, the diameters of several linkage holes are gradually increased in the direction away from the piston cylinder, so that the several linkage holes are gradually connected with the water outlet holes, and the water outlet diameters of the water outlet holes can be changed to further enhance the pressurization effect of the piston cylinder on the liquid. That is, the range of liquid flow is more comprehensive, and the contact area with the raw materials is more sufficient, which further ensures the quality of concrete production and processing.

[0022] Furthermore, the linkage block extends out of the conduit; it also includes a cleaning part; the cleaning part includes a cleaning block, an elastic block, a plurality of conical blocks equidistantly arranged along the length direction of the elastic block, and a side hole opened on the elastic block; the plurality of linkage blocks are fixedly connected to the cleaning block; the elastic block is fixedly connected to the cleaning block, and the elastic block is attached to the inner wall of the mixing drum; the conical block is located in the side hole, and the conical block is fixedly connected to the cleaning block.

[0023] The circumferential movement of the elastic block can scrape the raw materials on the circumferential direction of the inner wall of the mixing drum, so the raw materials at any position on the circumferential direction of the inner wall of the mixing drum are scraped off by the elastic block. Similarly, when the elastic block moves vertically, the raw materials at any position on the depth direction of the inner wall of the mixing drum are also scraped off by the elastic block.

[0024] Through the above movement, the circumferential movement and vertical movement of the elastic block can fully and thoroughly clean the raw materials on the inner wall of the mixing drum, so that all the raw materials adhering to the inner wall of the mixing drum can be scraped off by the elastic block. That is, the utilization rate of the raw materials is improved, so that the raw materials and water can be fully mixed to finally form concrete. At the same time, it also reduces the difficulty of subsequent cleaning of the inner wall of the mixing drum, reduces the unnecessary workload of workers, and saves time and effort.

[0025] Moreover, the elastic block can continuously squeeze the inner wall of the mixing drum driven by the linkage block, thereby enhancing the force of the elastic block on the inner wall of the mixing drum, so that the raw materials adhering to the inner wall of the mixing drum can be scraped off more easily, further enhancing the effect of the elastic block and improving the working efficiency of the elastic block.

[0026] When the elastic block squeezes the inner wall of the mixing drum, it will be subjected to the reaction force of the inner wall of the mixing drum, and then the elastic block is deformed, so that the conical block can act on the inner wall of the mixing drum. During the period when the conical block acts on the inner wall of the mixing drum, the force of the conical block on the raw material is more concentrated, that is, the force of the conical block on the raw material is greater than that of the elastic block, and the cleaning effect is better. On the one hand, it can reduce the amount of raw materials with strong viscosity adhering to the inner wall of the mixing drum, and on the other hand, it can further weaken the adhesion of the raw materials to the inner wall of the mixing drum, that is, the raw materials become loose. The loosened raw materials are more easily scraped off by the elastic block, which further improves the working efficiency of the elastic block.

[0027] The conical block is arranged in the side hole so that when the elastic block is subjected to the reaction force of the inner wall of the mixing drum, during the reverse movement of the elastic block, on the one hand, it can promote the stability of the movement of the elastic block, and on the other hand, it can ensure that the elastic block will not break due to excessive deformation, that is, it achieves the effect of reinforcing the elastic block.

[0028] Furthermore, the auxiliary shaft is an auxiliary tube; a connecting hole is opened on the connecting block; both ends of the connecting hole are respectively connected to the hollow tube and the auxiliary tube; and a plurality of atomizing nozzles are connected equidistantly along the circumferential direction of the auxiliary tube.

[0029] While the liquid is flowing in the auxiliary pipe, the atomizing nozzle can convert the liquid into atomized liquid, so that the atomized liquid can suppress the dust generated during the stirring process and reduce the amount of dust, ensuring that the dust will not cause harm to the human body or pollute the environment during subsequent operations.

[0030] The purpose of setting up the atomizing nozzle is to expand the contact area between the liquid and the dust, so that the atomized liquid can contact more dust, further ensuring that the dust can be treated more comprehensively.

[0031] Since the auxiliary pipe can rotate, the atomizing nozzle can rotate in a circumferential direction, thereby expanding the range of action of the atomizing nozzle, enhancing the effect of the atomizing nozzle, allowing the atomized liquid to diffuse over a large area, ensuring that the atomized liquid comes into contact with more dust, and further improving the dust reduction efficiency, thereby protecting the life and health of the workers.

[0032] Furthermore, it also includes an extrusion unit; the extrusion unit includes a long plate, a plurality of extrusion blocks equidistantly arranged along the length direction of the long plate, a slide groove opened on the connecting block, and a driving member for driving the long plate to perform vertical reciprocating motion; the long plate is vertically slidably connected to the slide groove; the extrusion block is fixedly connected to the long plate; a rubber tube is fixedly connected to the atomizing nozzle; the rubber tube is located on the motion trajectory of the extrusion block, and the extrusion block is used to extrude the rubber tube.

[0033] The rubber tube is squeezed by the squeezing block, causing the rubber tube to deform; during the deformation of the rubber tube, the water outlet of the rubber tube will be squeezed smaller, thereby increasing the pressure inside the rubber tube, that is, the atomized liquid sprayed from the atomizing nozzle can increase the effective distance of the atomized liquid after the rubber tube is deformed. When the rubber tube gradually returns to its initial state, the effective distance of the atomized liquid also gradually returns to its initial state. Therefore, through the deformation of the rubber tube, the effective distance of the atomized liquid can be continuously adjusted, so that the atomized liquid can contact more dust during the period of changing the effective distance, further expanding the effective range of the atomized liquid and ensuring that the dust is more comprehensively and thoroughly suppressed.

[0034] Furthermore, the power assembly includes a short shaft, a first gear, a first arc-shaped rack, a second arc-shaped rack, and a fourth spring; the short shaft is rotatably connected to the mixing drum; the first gear is fixed to the short shaft; the first arc-shaped rack is fixed to the guide block; the second arc-shaped rack is slidably connected to the arc-shaped drum; the baffle is fixed to the second arc-shaped rack; the first gear is located between the first arc-shaped rack and the second arc-shaped rack, and the first gear is respectively able to mesh with the first arc-shaped rack and the second arc-shaped rack; the two ends of the fourth spring are respectively connected to the second arc-shaped rack and the inner wall of the arc-shaped drum.

[0035] During the circumferential movement of the guide block, the first arc-shaped rack moves synchronously; when the first arc-shaped rack moves, when the first arc-shaped rack meshes with the first gear, the first gear rotates; during the rotation of the first gear, since the first gear meshes with the second arc-shaped rack, the second arc-shaped rack drives the baffle to move toward the inner wall of the arc-shaped cylinder. When the first arc-shaped rack is no longer meshed with the first gear, the second arc-shaped rack is reset under the action of the fourth spring. Therefore, the second arc-shaped rack can make intermittent reciprocating motion along the arc length direction of the arc-shaped cylinder.

[0036] Furthermore, the motion unit includes a second gear and an annular rack; the second gear is fixedly connected to the auxiliary shaft; the annular rack is fixedly connected to the mixing drum; and the second gear is meshed with the annular rack.

[0037] During the circumferential movement of the auxiliary shaft, the second gear moves synchronously; during the movement of the second gear, the second gear is engaged with the annular rack, thereby rotating; during the rotation of the second gear, the auxiliary shaft moves synchronously; that is, while the auxiliary shaft moves circumferentially, it can also rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of an embodiment of a premixing mechanism for concrete production and processing of the present invention.

[0039] Figure 2 for Figure 1 Schematic diagram of the internal structure of the mixing drum.

[0040] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0041] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0042] Figure 5 for Figure 2 Schematic diagram of the local structure.

[0043] Figure 6 for Figure 5 Enlarged view of point C in the middle.

[0044] Figure 7 for Figure 5 Cross-sectional view of the auxiliary tube in the main viewing direction.

[0045] Figure 8 for Figure 7 Enlarged view of point D in the middle.

[0046] Fig. 9 for Figure 7 Enlarged view of point E in the middle.

[0047] Fig.10 for Figure 7 Enlarged view of point F in the middle. DETAILED DESCRIPTION

[0048] The following is further described in detail through specific implementation methods:

[0049] The reference numerals in the drawings of the specification include: mixing drum 1, feeding drum 2, feeding hole 3, screening plate 4, rotating shaft 5, crushing knife 6, stirring block 7, arc cylinder 8, baffle 9, motor 10, fixing block 11, connecting block 12, auxiliary shaft 13, first cam 14, guide block 15, vibration block 16, vertical block 17, concave block 18, auxiliary block 19, second spring 20, throwing block 21, water tank 22, piston cylinder 23, piston block 24, first Wedge block 25, third spring 26, hose 27, second wedge block 28, linkage block 29, linkage hole 30, water outlet hole 31, cleaning block 32, elastic block 33, conical block 34, atomizing nozzle 35, long plate 36, extrusion block 37, rubber tube 38, first gear 39, first arc-shaped rack 40, second arc-shaped rack 41, second gear 42, annular rack 43, long shaft 44, third gear 45, rack 46, second cam 47.

[0050] The embodiment is basically as shown in the attached Figure 1 , 2 , 3, 4, 5, 6, 7, 8, 9, 10 as shown:

[0051] The embodiment of the present invention provides a premixing mechanism for concrete production and processing, including a mixing drum 1 and a feeding drum 2, both of which are provided with a feed port and a discharge port, a feeding hole 3 is provided on the side wall of the mixing drum 1, the feeding drum 2 is fixedly connected to the side wall of the mixing drum 1, the feeding drum 2 is communicated with the feeding hole 3, and also includes a mixing mechanism arranged in the mixing drum 1; the mixing mechanism includes a screening plate 4, a rotating shaft 5, a crushing knife 6, a feeding assembly, a plurality of mixing blocks 7 fixedly connected to the rotating shaft 5 at equal distances along the axial direction of the rotating shaft 5, and a driving assembly for driving the rotating shaft 5 to rotate ; The screening plate 4 is fixedly connected to the inner wall of the mixing drum 1; the rotating shaft 5 is rotatably connected to the screening plate 4; the crushing knife 6 is fixedly connected to the rotating shaft 5; the screening plate 4 is located between the crushing knife 6 and the stirring block 7; the feeding assembly includes an arc-shaped cylinder 8, a baffle 9 for sealing the feeding hole 3, and a power assembly for driving the baffle 9 to perform intermittent reciprocating motion along the arc length direction of the arc-shaped cylinder 8; the arc-shaped cylinder 8 is fixedly connected to the inner wall of the mixing drum 1; the baffle 9 is slidably connected to the arc-shaped cylinder 8; the driving assembly is a motor 10, the motor 10 is fixedly connected to the outer wall of the bottom of the mixing drum 1, and the output shaft of the motor 10 is fixedly connected to the rotating shaft 5.

[0052] It also includes an auxiliary component; the auxiliary component includes a fixed block 11, a connecting block 12, an auxiliary shaft 13, a first cam 14, a guide block 15, a vibrating block 16, a first spring, and a motion unit for driving the auxiliary shaft 13 to rotate; the fixed block 11 and the connecting block 12 are both fixedly connected to the rotating shaft 5; the auxiliary shaft 13 is rotationally connected to the fixed block 11; the first cam 14 is fixedly connected to the auxiliary shaft 13; the guide block 15 is fixedly connected to the connecting block 12; the vibrating block 16 is vertically slidably connected to the guide block 15, and the bottom of the screening plate 4 is located on the motion trajectory of the vibrating block 16; the first cam 14 is against the vibrating block 16; the two ends of the first spring are respectively connected to the vibrating block 16 and the guide block 15.

[0053] The auxiliary component also includes an auxiliary part; the auxiliary part includes a vertical block 17 and a plurality of auxiliary units equidistantly arranged along the length direction of the vertical block 17; the auxiliary unit includes a recessed block 18, an auxiliary block 19, a second spring 20, and a plurality of throwing blocks 21 equidistantly fixedly connected along the length direction of the auxiliary block 19; the recessed block 18 is fixedly connected to the rotating shaft 5; the auxiliary block 19 is vertically slidably connected to the inner wall of the recessed block 18, and the auxiliary block 19 is located between two adjacent stirring blocks 7; the two ends of the second spring 20 are respectively connected to the auxiliary block 19 and the recessed block 18; the plurality of auxiliary blocks 19 are all fixedly connected to the vertical block 17; the first cam 14 is against the vertical block 17.

[0054] The rotating shaft 5 is a hollow tube; the auxiliary block 19 is a conduit; the hollow tube extends out of the mixing drum 1; a water tank 22 is fixedly connected to the top of the outer wall of the mixing drum 1, and a sufficient amount of clean water is stored in the water tank 22; a water outlet pipe is connected to the water tank 22; the free end of the water outlet pipe faces the hollow tube; it also includes a plurality of linkage parts equidistantly arranged along the axial direction of the hollow tube; the linkage part includes a piston cylinder 23, a piston block 24, a first wedge block 25, a third spring 26, a hose 27, and a plurality of second wedge blocks 28 equidistantly fixedly connected along the length direction of the concave block 18; the piston cylinder 23 is fixedly connected to the inner wall of the conduit; the piston block 24 extends out of the conduit and extends into the concave block 18, and the piston block 24 is slidably connected to the piston cylinder 23 and the conduit respectively; the third spring 26 26 is sleeved on the piston block 24, and the two ends of the third spring 26 are respectively connected to the piston block 24 and the piston cylinder 23; the first wedge block 25 is fixedly connected to the piston block 24, and the second wedge block 28 is located on the movement trajectory of the first wedge block 25; the piston cylinder 23 is respectively connected with an inlet pipe and a water outlet pipe; the inlet pipe is equipped with a first one-way valve for the liquid to flow from the conduit to the piston cylinder 23 in one direction; the water outlet pipe is equipped with a second one-way valve for the liquid to flow from the piston cylinder 23 to the conduit in one direction; the two ends of the hose 27 are respectively connected to the hollow pipe and the conduit, and the length of the hose 27 can be suitable for the conduit to make vertical reciprocating motion; a number of water outlet holes 31 are equidistantly opened along the length direction of the conduit; the water outlet holes 31 are located at the bottom of the conduit.

[0055] The linkage part also includes a linkage unit; the linkage unit includes a linkage block 29 and a plurality of linkage holes 30 groups equidistantly opened on the linkage block 29 along the length direction of the linkage block 29; the linkage block 29 is slidably connected to the piston cylinder 23, the linkage block 29 is fixedly connected to the piston block 24, and the linkage block 29 is in contact with the bottom of the inner wall of the conduit; the linkage hole 30 group includes a plurality of linkage holes 30; the diameters of the plurality of linkage holes 30 gradually increase in the direction away from the piston cylinder 23; the water outlet hole 31 is located on the movement trajectory of the linkage hole 30.

[0056] The linkage block 29 extends out of the conduit; it also includes a cleaning part; the cleaning part includes a cleaning block 32, an elastic block 33, a plurality of tapered blocks 34 equidistantly arranged along the length direction of the elastic block 33, and a side hole opened on the elastic block 33; the plurality of linkage blocks 29 are fixedly connected to the cleaning block 32; the elastic block 33 is fixedly connected to the cleaning block 32, and the elastic block 33 is in contact with the inner wall of the mixing drum 1; the tapered block 34 is located in the side hole, and the tapered block 34 is fixedly connected to the cleaning block 32.

[0057] The auxiliary shaft 13 is an auxiliary pipe; a connecting hole is opened on the connecting block 12; both ends of the connecting hole are connected to the hollow pipe and the auxiliary pipe respectively; a plurality of atomizing nozzles 35 are connected at equal distances along the circumferential direction of the auxiliary pipe.

[0058] It also includes an extrusion unit; the extrusion unit includes a long plate 36, a plurality of extrusion blocks 37 equidistantly arranged along the length direction of the long plate 36, a slide groove opened on the connecting block 12, and a driving member for driving the long plate 36 to perform vertical reciprocating motion; the long plate 36 is vertically slidably connected to the slide groove; the extrusion block 37 is fixedly connected to the long plate 36; a rubber tube 38 is fixedly connected to the atomizing nozzle 35; the rubber tube 38 is located on the movement trajectory of the extrusion block 37, and the extrusion block 37 is used to extrude the rubber tube 38.

[0059] The power assembly includes a short shaft, a first gear 39, a first arc-shaped rack 40, a second arc-shaped rack 41, and a fourth spring; the short shaft is rotatably connected to the inner wall of the mixing drum 1; the first gear 39 is fixedly connected to the short shaft; the first arc-shaped rack 40 is fixedly connected to the guide block 15; the second arc-shaped rack 41 is slidably connected to the arc-shaped drum 8; the baffle 9 is fixedly connected to the second arc-shaped rack 41; the first gear 39 is located between the first arc-shaped rack 40 and the second arc-shaped rack 41, and the first gear 39 can mesh with the first arc-shaped rack 40 and the second arc-shaped rack 41 respectively; the two ends of the fourth spring are respectively connected to the second arc-shaped rack 41 and the inner wall of the arc-shaped drum 8.

[0060] The motion unit comprises a second gear 42 and an annular rack 43 ; the second gear 42 is fixedly connected to the auxiliary shaft 13 ; the annular rack 43 is fixedly connected to the mixing drum 1 ; the second gear 42 is meshed with the annular rack 43 .

[0061] The driving member includes a long shaft 44, a third gear 45, a rack 46, a second cam 47, and a fifth spring; the long shaft 44 is rotatably connected to the fixed block 11; the third gear 45 is fixedly connected to the long shaft 44; the rack 46 is fixedly connected to the vertical block 17, and the rack 46 is meshed with the second gear 42; the second cam 47 is fixedly connected to the long shaft 44, and the second protrusion is against the long plate 36; the two ends of the fifth spring are respectively connected to the long shaft 44 and the slide groove.

[0062] Specific implementation process:

[0063] The sand and gravel materials to be crushed are placed on the screening plate 4 along the feed port, and the cement mixture to be stirred and mixed is placed into the feeding barrel 2 along the feed port, and then the motor 10 is started, and the output shaft of the motor 10 drives the rotating shaft 5 to rotate.

[0064] During the rotation of the rotating shaft 5, the sand and gravel on the screening plate 4 are broken by the crushing knife 6, so that the sand and gravel are broken into several particles, and screened by the screening plate 4, so that the particles with qualified particle size fall through the screening plate 4, and the particles with unqualified particle size are retained on the screening plate 4, so that they are broken by the crushing knife 6 again until the particle size is qualified.

[0065] Through the above movement, under the joint action of the crushing knife 6 and the screening plate 4, the pre-processing of the sand and gravel is completed, so that the particle size of the sand and gravel becomes smaller, thereby preparing for the subsequent stirring and mixing, providing stirring convenience, and promoting the stirring efficiency of the stirring block 7.

[0066] During the falling of sand and gravel, the rotating shaft 5 drives the guide block 15 to synchronously move in a circumferential direction through the connecting block 12. During the circumferential movement of the guide block 15, the first arc-shaped rack 40 moves synchronously; the first arc-shaped rack 40 moves, and when the first arc-shaped rack 40 meshes with the first gear 39, the first gear 39 rotates; during the rotation of the first gear 39, since the first gear 39 meshes with the second arc-shaped rack 41, the second arc-shaped rack 41 drives the baffle 9 to move toward the inner wall of the arc-shaped cylinder 8. When the first arc-shaped rack 40 is no longer meshed with the first gear 39, the second arc-shaped rack 41 is reset under the action of the fourth spring. Therefore, the second arc-shaped rack 41 can make intermittent reciprocating motion along the arc length direction of the arc-shaped cylinder 8.

[0067] During the intermittent reciprocating motion of the second arc-shaped rack 41, the baffle 9 moves synchronously. During the intermittent reciprocating motion of the baffle 9, the cement mixture in the feeding barrel 2 can be quantitatively dropped into the mixing barrel 1 without manual operation, which simplifies the work process, saves unnecessary troubles for workers, and brings convenience to the workers. That is, by pre-processing the particle size of the sand and gravel materials and controlling the feeding speed of the cement mixture, the automatic feeding of the raw materials is realized, which provides a strong guarantee for the orderly mixing work of the mixing block 7. That is, the workload of the mixing block 7 during mixing is reduced, and the mixing block 7 will not mix a large amount of materials at one time, which improves the working efficiency of the mixing block 7.

[0068] In summary, under the joint action of the crushing blade 6, the screening plate 4, the baffle 9 and the stirring block 7, the pre-processing of the sand and gravel, the quantitative feeding of the cement mixture, and the sufficient mixing of the raw materials in the mixing drum 1 are completed. The workflow is simplified, and the pre-processing, feeding and mixing operations are integrated. On the one hand, it is ensured that the sand and gravel can be broken more comprehensively and fully, and the crushing efficiency is improved. On the other hand, the stirring effect of the stirring block 7 is enhanced, and it is ensured that the stirring block 7 can fully, evenly and comprehensively mix the raw materials.

[0069] During the rotation of the rotating shaft 5, the auxiliary tube is driven to perform circumferential motion synchronously through the fixed block 11. During the movement of the auxiliary tube, the second gear 42 moves synchronously. During the movement of the second gear 42, the second gear 42 is engaged with the annular rack 43, so that the second gear 42 rotates. During the rotation of the second gear 42, the auxiliary tube rotates synchronously. Therefore, while the auxiliary tube performs circumferential motion, the auxiliary tube can also rotate.

[0070] During the rotation of the auxiliary tube, the first cam 14 rotates synchronously. During the rotation of the first cam 14, when the protrusion of the first cam 14 abuts against the vibration block 16, the vibration block 16 moves vertically upward, and the first spring is compressed; when the protrusion of the first cam 14 no longer abuts against the vibration block 16, the vibration block 16 is reset under the action of the first spring, and the vibration block 16 moves vertically downward. Therefore, the vibration block 16 can perform vertical reciprocating motion.

[0071] During the vertical reciprocating motion of the vibration block 16, when the vibration block 16 collides with the screening plate 4, the screening plate 4 vibrates; during the vibration of the screening plate 4, the screening plate 4 can cause the sand and gravel blocked in the screening plate 4 to make vertical reciprocating motion, and finally fall somewhere on the screening plate 4, thereby changing the position of the sand and gravel on the screening plate 4, thereby ensuring that the sand and gravel will not be blocked in the screening plate 4, enhancing the screening effect of the screening plate 4, and improving the screening capacity of the screening plate 4, that is, the screening plate 4 can continuously and efficiently screen the sand and gravel with qualified particle size.

[0072] Furthermore, since the vibration block 16 can also perform circumferential motion, the action range of the vibration block 16 is expanded, and the effect of the vibration block 16 on the screening plate 4 is further enhanced, that is, the screening efficiency of the screening plate 4 on sand and gravel is comprehensively improved.

[0073] During the rotation of the first cam 14, when the protrusion of the first cam 14 abuts against the vertical block 17, the vertical block 17 moves vertically downward, and the second spring 20 is compressed; when the protrusion of the first cam 14 no longer abuts against the vertical block 17, the vertical block 17 is reset under the action of the second spring 20, and the vertical block 17 moves vertically upward. Therefore, the vertical block 17 can perform vertical reciprocating motion.

[0074] During the movement of the vertical block 17, the conduit moves synchronously. During the movement of the conduit, the throwing block 21 moves synchronously. During the vertical reciprocating movement of the throwing block 21, on the one hand, the raw materials can be turned over in the vertical direction, so that the raw materials can be evenly distributed in the mixing drum 1, thereby expanding the stirring range of the stirring block 7 on the raw materials and enhancing the stirring effect on the raw materials. On the other hand, the raw materials can have a certain fluidity in the vertical direction, so that the raw materials can continuously change their positions in the vertical direction, that is, the stirring block 7 can stir the raw materials in the mixing drum 1 more comprehensively, further enhancing the stirring effect on the raw materials and improving the quality of stirring and mixing.

[0075] During the stirring and throwing block 21 movement, the liquid in the water tank 22 is introduced into the hollow tube through the outlet pipe. After the liquid flows into the conduit through the hollow tube and the hose 27, the liquid is finally discharged from the outlet hole 31. During the flow of the liquid, since the conduit can also make vertical reciprocating motion, the scope of action of the liquid in the raw material is expanded, so that the raw material can be mixed with the liquid more evenly during the stirring, and the speed of mixing the raw material and the liquid is promoted. That is, by changing the flow mode of the liquid, the raw material can be mixed with the liquid at the same time during the stirring and mixing, which further simplifies the work process, shortens the processing time of concrete, and improves the production efficiency of concrete.

[0076] During the vertical reciprocating motion of the conduit, the piston block 24 moves synchronously. During the motion of the piston block 24, the piston block 24 can reciprocate along the length direction of the conduit under the joint action of the first wedge block 25, the second wedge block 28, and the third spring 26. During the flow of liquid in the conduit, the reciprocating motion of the piston block 24 can continuously inhale and discharge the liquid, thereby pressurizing the liquid, ensuring that the liquid flowing out of the water outlet 31 has a faster flow rate and a longer flow distance, that is, expanding the flow range of the liquid, ensuring that the liquid can flow evenly in the raw material, thereby promoting the efficient production and processing of concrete.

[0077] During the period when the piston cylinder 23 pressurizes the liquid in the conduit, the linkage block 29 moves synchronously with the piston block 24. During the movement of the linkage block 29, the diameters of the plurality of linkage holes 30 provided on the linkage block 29 gradually increase in the direction away from the piston cylinder 23, so that the plurality of linkage holes 30 gradually communicate with the water outlet holes 31, and further enhance the pressurization effect of the piston cylinder 23 on the liquid by changing the water outlet diameter of the water outlet holes 31, that is, the range of liquid flow is more comprehensive, and the contact area with the raw materials is more sufficient, which further ensures the quality of concrete production and processing.

[0078] During the movement of linkage block 29, cleaning block 32 moves synchronously. During the movement of cleaning block 32, elastic block 33 moves synchronously.

[0079] The circumferential movement of the elastic block 33 can scrape the raw materials on the circumferential direction of the inner wall of the mixing drum 1, so the raw materials at any position on the circumferential direction of the inner wall of the mixing drum 1 are scraped off by the elastic block 33. Similarly, when the elastic block 33 moves vertically, the raw materials at any position on the depth direction of the inner wall of the mixing drum 1 are also scraped off by the elastic block 33.

[0080] Through the above movement, the circumferential movement and vertical movement of the elastic block 33 can fully and thoroughly clean the raw materials on the inner wall of the mixing drum 1, so that all the raw materials adhering to the inner wall of the mixing drum 1 can be scraped off by the elastic block 33. That is, the utilization rate of the raw materials is improved, so that the raw materials and water can be fully mixed to finally form concrete. At the same time, it also reduces the difficulty of subsequent cleaning of the inner wall of the mixing drum 1, reduces the unnecessary workload of workers, and saves time and effort.

[0081] Moreover, the elastic block 33, driven by the linkage block 29, can continuously squeeze the inner wall of the mixing drum 1, thereby enhancing the force of the elastic block 33 on the inner wall of the mixing drum 1, so that the raw materials adhering to the inner wall of the mixing drum 1 can be scraped off more easily, further enhancing the effect of the elastic block 33 and improving the working efficiency of the elastic block 33.

[0082] When the elastic block 33 squeezes the inner wall of the mixing drum 1, it will be subjected to the reaction force of the inner wall of the mixing drum 1, and then the elastic block 33 is deformed, so that the conical block 34 can act on the inner wall of the mixing drum 1. During the period when the conical block 34 acts on the inner wall of the mixing drum 1, the force of the conical block 34 on the raw material is more concentrated, that is, the force of the conical block 34 on the raw material is greater than that of the elastic block 33, and the cleaning effect is better. On the one hand, it can reduce the amount of raw materials with strong viscosity adhering to the inner wall of the mixing drum 1, and on the other hand, it can further weaken the adhesion of the raw materials to the inner wall of the mixing drum 1, that is, the raw materials become loose. The loosened raw materials are more easily scraped off by the elastic block 33, which further improves the working efficiency of the elastic block 33.

[0083] The conical block 34 is arranged in the side hole so that when the elastic block 33 is subjected to the reaction force of the inner wall of the mixing drum 1, the elastic block 33 can promote the stability of the movement of the elastic block 33 during the reverse movement, and can ensure that the elastic block 33 will not break due to excessive deformation, that is, the elastic block 33 is reinforced.

[0084] While the liquid is flowing in the auxiliary pipe, the liquid can be converted into atomized liquid through the atomizing nozzle 35, so that the atomized liquid can suppress the dust generated during the stirring process and reduce the amount of dust, ensuring that the dust will not cause harm to the human body or pollute the environment during subsequent operations.

[0085] The atomizing nozzle 35 is provided to expand the contact area between the liquid and the dust, so that the atomized liquid can contact more dust, further ensuring that the dust can be treated more comprehensively.

[0086] Since the auxiliary pipe can rotate, the atomizing nozzle 35 can rotate circumferentially, thereby expanding the range of action of the atomizing nozzle 35, enhancing the effect of the atomizing nozzle 35, allowing the atomized liquid to diffuse over a large area, ensuring that the atomized liquid contacts more dust, further improving the dust reduction efficiency, and thus protecting the life and health of the workers.

[0087] During the rotation of the auxiliary tube, the second cam 47 rotates synchronously. During the rotation of the second cam 47, when the protrusion of the second cam 47 abuts against the long plate 36, the long plate 36 moves vertically upward, and the fifth spring is compressed; when the protrusion of the second cam 47 no longer abuts against the long plate 36, the long plate 36 is reset under the action of the fifth spring, and the long plate 36 moves vertically downward. Therefore, the long plate 36 can perform vertical reciprocating motion. During the vertical reciprocating motion of the long plate 36, the extrusion block 37 moves synchronously.

[0088] During the vertical reciprocating motion of the extrusion block 37, the rubber tube 38 is squeezed by the extrusion block 37, thereby causing the rubber tube 38 to deform; during the deformation of the rubber tube 38, the water outlet of the rubber tube 38 will be squeezed smaller, thereby increasing the pressure in the rubber tube 38, that is, the atomized liquid sprayed by the atomizing nozzle 35 can increase the effective distance of the atomized liquid after the rubber tube 38 is deformed. When the rubber tube 38 gradually returns to its initial state, the effective distance of the atomized liquid also gradually returns to its initial state. Therefore, through the deformation of the rubber tube 38, the effective distance of the atomized liquid can be continuously adjusted, so that the atomized liquid can contact more dust during the period of changing the effective distance, further expanding the effective range of the atomized liquid, and ensuring that the dust is more comprehensively and thoroughly reduced.

[0089] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A premixing mechanism for concrete production and processing, comprising a mixing drum and a feeding drum, both of which are provided with a feeding port and a discharging port, a feeding hole is provided on the side wall of the mixing drum, the feeding drum is fixedly connected to the mixing drum, and the feeding drum is communicated with the feeding hole, characterized in that: It also includes a stirring mechanism arranged in the stirring drum; the stirring mechanism includes a screening plate, a rotating shaft, a crushing knife, a feeding assembly, a plurality of stirring blocks fixedly connected to the rotating shaft at equal distances along the axial direction of the rotating shaft, and a driving assembly for driving the rotating shaft to rotate; the screening plate is fixedly connected to the stirring drum; the rotating shaft is rotatably connected to the screening plate; the crushing knife is fixedly connected to the rotating shaft; the screening plate is located between the crushing knife and the stirring block; the feeding assembly includes an arc-shaped drum, a baffle for sealing the feeding hole, and a power assembly for driving the baffle to make intermittent reciprocating motion along the arc length direction of the arc-shaped drum; the arc-shaped drum is fixedly connected to the stirring drum; and the baffle is slidably connected to the arc-shaped drum.

2. A premixing mechanism for concrete production and processing according to claim 1, characterized in that: It also includes an auxiliary component; the auxiliary component includes a fixed block, a connecting block, an auxiliary shaft, a first cam, a guide block, a vibrating block, a first spring, and a motion unit for driving the auxiliary shaft to rotate; the fixed block and the connecting block are both fixedly connected to the rotating shaft; the auxiliary shaft is rotatably connected to the fixed block; the first cam is fixedly connected to the auxiliary shaft; the guide block is fixedly connected to the connecting block; the vibrating block is vertically slidably connected to the guide block, and the bottom of the screening plate is located on the motion trajectory of the vibrating block; the first cam is against the vibrating block; and the two ends of the first spring are respectively connected to the vibrating block and the guide block.

3. A premixing mechanism for concrete production and processing according to claim 2, characterized in that: The auxiliary component also includes an auxiliary part; the auxiliary part includes a vertical block and several auxiliary units equidistantly arranged along the length direction of the vertical block; the auxiliary unit includes a concave block, an auxiliary block, a second spring, and several throwing blocks equidistantly fixed along the length direction of the auxiliary block; the concave block is fixed to the rotating shaft; the auxiliary blocks are vertically slidably connected to the concave blocks, and the auxiliary block is located between two adjacent stirring blocks; the two ends of the second spring are respectively connected to the auxiliary block and the concave block; the several auxiliary blocks are all fixed to the vertical block; and the first cam is against the vertical block.

4. A premixing mechanism for concrete production and processing according to claim 3, characterized in that: The rotating shaft is a hollow tube; the auxiliary block is a conduit; the hollow tube extends out of the mixing drum; a water tank is fixedly connected to the top of the outer wall of the mixing drum; a water outlet pipe is connected to the water tank; the free end of the water outlet pipe faces the hollow tube; it also includes a number of linkage parts equidistantly arranged along the axial direction of the hollow tube; the linkage part includes a piston cylinder, a piston block, a first wedge block, a third spring, a hose, and a number of second wedge blocks fixedly connected at equal distances along the length direction of the concave block; the piston cylinder is fixedly connected to the inner wall of the conduit; the piston block is slidingly connected to the piston cylinder and the conduit respectively; the two ends of the third spring are respectively connected to the piston block and the piston cylinder; the first wedge block is fixedly connected to the piston block, and the second wedge block is located on the movement trajectory of the first wedge block; the piston cylinder is respectively connected to the liquid inlet pipe and the water outlet pipe; the two ends of the hose are respectively connected to the hollow tube and the conduit; a number of water outlet holes are opened at equal distances along the length direction of the conduit; the water outlet holes are located at the bottom of the conduit.

5. A premixing mechanism for concrete production and processing according to claim 4, characterized in that: The linkage part also includes a linkage unit; the linkage unit includes a linkage block and a plurality of linkage hole groups equidistantly opened on the linkage block along the length direction of the linkage block; the linkage block is slidably connected to the piston cylinder, the linkage block is fixedly connected to the piston block, and the linkage block is in contact with the bottom of the inner wall of the conduit; the linkage hole group includes a plurality of linkage holes; the diameters of the plurality of linkage holes gradually increase in the direction away from the piston cylinder; and the water outlet hole is located on the movement trajectory of the linkage hole.

6. A premixing mechanism for concrete production and processing according to claim 5, characterized in that: The linkage block extends out of the conduit; it also includes a cleaning part; the cleaning part includes a cleaning block, an elastic block, a plurality of tapered blocks equidistantly arranged along the length direction of the elastic block, and a side hole opened on the elastic block; the plurality of linkage blocks are fixedly connected to the cleaning block; the elastic block is fixedly connected to the cleaning block, and the elastic block is attached to the inner wall of the mixing drum; the tapered block is located in the side hole, and the tapered block is fixedly connected to the cleaning block.

7. A premixing mechanism for concrete production and processing according to claim 6, characterized in that: The auxiliary shaft is an auxiliary pipe; a connecting hole is opened on the connecting block; two ends of the connecting hole are respectively connected with the hollow pipe and the auxiliary pipe; and a plurality of atomizing nozzles are connected at equal distances along the circumferential direction of the auxiliary pipe.

8. A premixing mechanism for concrete production and processing according to claim 7, characterized in that: It also includes an extrusion unit; the extrusion unit includes a long plate, a plurality of extrusion blocks equidistantly arranged along the length direction of the long plate, a slide groove opened on the connecting block, and a driving member used to drive the long plate to perform vertical reciprocating motion; the long plate is vertically slidably connected to the slide groove; the extrusion block is fixedly connected to the long plate; a rubber tube is fixedly connected to the atomizing nozzle; the rubber tube is located on the motion track of the extrusion block, and the extrusion block is used to extrude the rubber tube.

9. A premixing mechanism for concrete production and processing according to claim 8, characterized in that: The power assembly includes a short shaft, a first gear, a first arc-shaped rack, a second arc-shaped rack, and a fourth spring; the short shaft is rotatably connected to the mixing drum; the first gear is fixed to the short shaft; the first arc-shaped rack is fixed to the guide block; the second arc-shaped rack is slidably connected to the arc-shaped drum; the baffle is fixed to the second arc-shaped rack; the first gear is located between the first arc-shaped rack and the second arc-shaped rack, and the first gear can respectively mesh with the first arc-shaped rack and the second arc-shaped rack; the two ends of the fourth spring are respectively connected to the second arc-shaped rack and the inner wall of the arc-shaped drum.

10. A premixing mechanism for concrete production and processing according to claim 9, characterized in that: The motion unit comprises a second gear and an annular rack; the second gear is fixedly connected to the auxiliary shaft; the annular rack is fixedly connected to the mixing drum; and the second gear is meshed with the annular rack.

Images