Concrete mixing device
By designing a composite mixing device, the automatic screening of sand and the full mixing of cement and water is achieved, which solves the problems of cumbersome mixing process and easy concrete agglomeration in the prior art, and improves the quality and preparation efficiency of concrete.
Patent Information
- Application Number
- CN202420122090.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-18
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-01-18
AI Technical Summary
The existing concrete mixing equipment has problems such as complicated operation steps, inconvenient screening of granular aggregates, uneven mixing of gelled materials and water and prone to agglomeration, which affects the quality of concrete.
A composite mixing device is designed, including a stirring shaft driven by a power motor, a transverse screen plate, an inverted conical mixing plate and a batch drive unit to realize automatic screening of sand, full mixing of cement and water, and through arc A shaped stirring strip prevents concrete from agglomerating.
The device integrates the sand material screening function, ensures the continuity of the concrete preparation process, simplifies the operation steps, avoids concrete blockage, and ensures uniform integration of sand material, thereby improving the quality of concrete.
Smart Images
Figure CN222431126U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a concrete mixing device. Background Art
[0002] Concrete is one of the most important civil engineering materials in contemporary times. It is an artificial stone made of cementitious materials (usually cement), granular aggregate (usually sand), water, and admixtures and additives added when necessary in a certain proportion, and is evenly mixed, compacted into a dense shape, and cured and hardened. When mixing concrete at present, the granular aggregate must first be screened in a screening device to remove large particles of material, and then added to the mixing device. The process is intermittent and the operation steps are relatively cumbersome. In addition, the cementitious material and water are poured into the mixing device at one time, resulting in uneven mixing of the two, and it is easy to agglomerate, which in turn causes the granular aggregate to be unable to be smoothly integrated, ultimately affecting the quality of concrete, which needs further improvement. Utility Model Content
[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a concrete mixing device that integrates a screening function to ensure the continuity of the preparation process and simplifies the operating steps, and also completely avoids the agglomeration of concrete and mixes it evenly to fully ensure the quality of concrete.
[0004] The technical solution adopted by the utility model to solve the above technical problems is: a concrete mixing device, comprising a cylinder, a cylinder cover detachably fixed at the top opening of the cylinder, and a discharge valve arranged at the bottom opening of the tank body, characterized in that it also includes a composite mixing mechanism, the composite mixing mechanism includes a power motor fixed on the top of the cylinder cover, a sieve plate transversely fixed inside the tank body, an inverted cone mixing disk transversely fixed inside the tank body and located below the sieve plate, a stirring shaft vertically and rotatably interspersed and arranged at the center of the sieve plate and the inverted cone mixing disk, and a screening unit arranged above the sieve plate, the screening unit includes a transversely fixed An inner gear ring inside the tank body, a rotating plate arranged horizontally above the inner gear ring, and two screening assemblies arranged at the bottom of the rotating plate and diagonally opposite to each other, the upper end of the stirring shaft passes through the inner gear ring upward and is fixed at the bottom center of the rotating plate, the rotating shaft of the power motor passes vertically downward through the cylinder cover and is concentrically fixed to the top of the rotating plate, the screening assembly includes a screening gear that is horizontally and rotatably connected to the bottom of the rotating plate and meshed with the inner side of the inner gear ring, a rotating rod arranged horizontally below the screening gear, a screening shaft vertically arranged between the screening gear and the rotating rod, and a plurality of screening columns vertically fixed to the bottom of the rotating rod, the screening shaft The upper and lower ends are concentrically fixed to the bottom of the screening gear and the top of the rotating rod respectively, and the end of each screening column cooperates with the top of the screen plate; a conical convex cavity is formed upward from the center of the inner bottom surface of the inverted conical mixing disk, and an annular mixing trough is formed between the outer wall of the conical convex cavity and the inner wall of the inverted conical mixing disk, and a plurality of first discharge holes uniformly distributed at equal angles in the circumferential direction are provided on the bottom surface of the annular mixing trough, and correspondingly, the same number of discharge gears uniformly distributed at equal angles in the circumferential direction are also provided below the inverted conical mixing disk, and each of the discharge gears can be rotatably connected to the inverted conical mixing disk. The bottom of the gears has an elastic rotation function, a second discharge hole is provided in each of the discharge gears, and the position of each of the second discharge holes cooperates with the position of a corresponding first discharge hole. An intermittent drive unit is also provided under the inverted cone mixing disk, and the intermittent drive unit includes a rotating frame concentrically fixed on the stirring shaft and a plurality of toggle gears transversely fixed on the rotating frame and uniformly distributed at equal angles along the circumferential direction. The number of the toggle gears is equal to the number of the discharge gears, and each of the toggle gears is arranged on the inner side of any one of the discharge gears and cooperates with any one of the discharge gears.
[0005] Preferably, a concentrically arranged conical guide piece is also fixed to the top of the conical convex cavity, and a pushing unit is also provided between the conical guide piece and the screen plate, and the pushing unit includes a traction ring fixed on the stirring shaft and at least two scraping strips fixed obliquely on the traction ring and evenly arranged at equal angles along the circumferential direction, the lower side of each scraping strip is slidably fitted on the outer wall of the conical guide piece, and a pushing plate is also fixed at the end of each scraping strip, and a material passing hole is opened in each pushing plate; the cross-sectional shape of the annular mixing trough and the shape of the pushing plate are both inverted trapezoids.
[0006] Preferably, the composite mixing mechanism also includes a stirring unit, which includes a seat block fixed at the lower end of the stirring shaft, a thin rod vertically fixed to the bottom of the seat block and arranged concentrically with the stirring shaft, an arc-shaped stirring bar fixed to the end of the thin rod, and at least two auxiliary stirring combinations arranged on the seat block and evenly distributed at equal angles along the circumferential direction.
[0007] Preferably, the auxiliary stirring combination includes a stirring roller laterally and rotatably connected to the outer wall of the seat block, a plurality of stirring columns fixed on the outer peripheral surface of the stirring roller, a bevel gear concentrically fixed to the center of the end of the stirring roller, and a limiting ring laterally fixed inside the tank body and located above the bevel gear, a bevel gear ring arranged annularly downward is formed at the bottom of the limiting ring, and the bevel gear is meshed on the bevel gear ring.
[0008] Preferably, it also includes a sand tank arranged above the cylinder cover, and a cement tank and a water storage tank arranged outside the cylinder body, the bottom opening of the sand tank is inserted into the top side of the cylinder cover and is interconnected with the interior of the cylinder body, the bottom openings of the cement tank and the water storage tank are both inserted into the outer wall of the cylinder and are interconnected with the interior of the cylinder body and are both located between the inverted cone mixing disk and the screen plate.
[0009] Preferably, a transversely arranged diverter strip is fixed to the top of the rotating plate, and the cross-sectional shape of the diverter strip is an isosceles triangle. The rotating shaft of the power motor vertically passes through the cylinder cover downward and is fixed on the diverter strip and is arranged concentrically with the top of the rotating plate.
[0010] Compared with the prior art, the utility model has the following advantages: the utility model can automatically screen the sand before mixing to remove the sand with unqualified particle size, and then integrate the screening function of the sand to ensure the continuity of the concrete preparation process, thereby simplifying the operation steps; in addition, with the help of an intermittent drive unit, cement and water are first fully mixed with the sand to form slurry in the annular mixing trough, and then dropped in batches in small amounts multiple times in an intermittent manner, and then the dropped slurry is broken up with the help of each auxiliary stirring combination, and finally the concrete slurry at the bottom of the cylinder is continuously stirred with the help of an arc-shaped stirring bar, thereby completely avoiding the agglomeration of concrete and effectively ensuring that the sand can be smoothly and evenly integrated, thereby fully ensuring the quality of the concrete. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a top-down exploded structural diagram of the utility model;
[0012] Figure 2 It is a structural diagram of the intermittent drive unit and the auxiliary stirring combination of the utility model from above. DETAILED DESCRIPTION
[0013] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0014] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.
[0015] like Figures 1-2As shown, a concrete mixing device comprises a cylinder 1, a cylinder cover 2 detachably fixed at the top opening of the cylinder 1, and a discharge valve 6 arranged at the bottom opening of the tank body 1, and also comprises a composite mixing mechanism 7, the composite mixing mechanism 7 comprises a power motor 73 fixed at the top of the cylinder cover 2, a sieve plate 71 transversely fixed inside the tank body 1, an inverted cone mixing disk 710 transversely fixed inside the tank body 1 and located below the sieve plate 71, a stirring shaft 76 vertically and rotatably interlaced and arranged at the center of the sieve plate 71 and the inverted cone mixing disk 710, and a screening unit arranged above the sieve plate 71, the screening unit comprises an inner gear ring 72 transversely fixed inside the tank body 1, a rotating shaft 76 transversely arranged above the inner gear ring 72, and a rotating shaft 76 disposed at the bottom of the sieve plate 71. The rotating plate 74 and two screening assemblies arranged at the bottom of the rotating plate 74 and arranged diagonally to each other, the upper end of the stirring shaft 76 passes through the inner gear ring 72 upward and is fixed to the bottom center of the rotating plate 74, the rotating shaft of the power motor 73 passes through the cylinder cover 2 vertically downward and is concentrically fixed to the top of the rotating plate 74, the screening assembly includes a screening gear 75 that is horizontally and rotatably connected to the bottom of the rotating plate 74 and meshed with the inner side of the inner gear ring 72, a rotating rod 78 that is horizontally arranged below the screening gear 75, a screening shaft 77 that is vertically arranged between the screening gear 75 and the rotating rod 78, and a plurality of screening columns 79 that are vertically fixed to the bottom of the rotating rod 78, and the upper and lower ends of the screening shaft 77 are concentrically fixed to the screening gear 7 5 and the top of the rotating rod 78, and the end of each screening column 79 cooperates with the top of the sieve plate 71; a conical convex cavity 7101 is formed upwardly at the center of the inner bottom surface of the inverted conical mixing disk 710, and an annular mixing groove 7103 is formed between the outer wall of the conical convex cavity 7101 and the inner wall of the inverted conical mixing disk 710, and a plurality of first discharge holes 7102 uniformly distributed at equal angles in the circumferential direction are provided on the bottom surface of the annular mixing groove 7103. Correspondingly, the same number of discharge gears 721 uniformly distributed at equal angles in the circumferential direction are also provided below the inverted conical mixing disk 710, and each discharge gear 721 can be rotatably connected to the bottom of the inverted conical mixing disk 710 and has Elastic rotation function, each discharging gear 721 is provided with a second discharging hole 7211, the position of each second discharging hole 7211 cooperates with the position of a corresponding first discharging hole 7102, and an intermittent driving unit is also provided under the inverted cone mixing disk 710, the intermittent driving unit includes a rotating frame 719 concentrically fixed on the stirring shaft 76 and a plurality of toggle gears 720 which are transversely fixed on the rotating frame 719 and uniformly distributed at equal angles along the circumferential direction, the number of toggle gears 720 is equal to the number of discharging gears 721, each toggle gear 720 is arranged on the inner side of any discharging gear 721 and cooperates with any discharging gear 721.
[0016] A concentrically arranged conical guide piece 711 is also fixed to the top of the conical convex cavity 7101, and a pushing unit is also provided between the conical guide piece 711 and the screen plate 71. The pushing unit includes a traction ring 712 sleeved and fixed on the stirring shaft 76 and at least two scraper strips 713 obliquely fixed on the traction ring 712 and evenly arranged at equal angles along the circumferential direction. The lower side of each scraper strip 713 is slidably fitted on the outer wall of the conical guide piece 711, and a pushing plate 714 is fixed at the end of each scraper strip 713. A material passing hole 7141 is opened in each pushing plate 714; the cross-sectional shape of the annular mixing trough 7103 and the shape of the pushing plate 714 are both inverted trapezoids.
[0017] The composite mixing mechanism 7 also includes a stirring unit, which includes a seat block 715 fixed to the lower end of the stirring shaft 76, a thin rod 716 vertically fixed to the bottom of the seat block 715 and arranged concentrically with the stirring shaft 76, an arc-shaped stirring bar 717 fixed to the end of the thin rod 716, and at least two auxiliary stirring assemblies arranged on the seat block 715 and evenly distributed at equal angles along the circumferential direction.
[0018] The auxiliary stirring combination includes a stirring roller 722 which is laterally and rotatably connected to the outer wall of the seat block 715, a plurality of stirring columns 723 fixed on the outer peripheral surface of the stirring roller 722, a bevel gear 724 concentrically fixed to the center of the end of the stirring roller 722, and a limiting ring 718 which is laterally fixed inside the tank body 1 and located above the bevel gear 724. A bevel gear ring 7181 arranged annularly downward is formed at the bottom of the limiting ring 718, and the bevel gear 724 is meshed on the bevel gear ring 7181.
[0019] A concrete mixing device also includes a sand tank 3 arranged above a cylinder cover 2, and a cement tank 4 and a water tank 5 arranged outside a cylinder body 1, wherein the bottom opening of the sand tank 3 is plugged into one side of the top of the cylinder cover 2 and is interconnected with the interior of the cylinder body 1, and the bottom openings of the cement tank 4 and the water tank 5 are both plugged into the outer wall of the cylinder body 1 and are both interconnected with the interior of the cylinder body 1 and are both located between an inverted cone mixing disk 710 and a sieve plate 71.
[0020] A transversely arranged diverter strip 725 is also fixed to the top of the rotating plate 74 . The cross-sectional shape of the diverter strip 725 is an isosceles triangle. The rotating shaft of the power motor 73 passes vertically downward through the cylinder cover 2 and is fixed on the diverter strip 725 and is arranged concentrically with the top of the rotating plate 74 .
[0021] Working principle: the sand required for preparing concrete is loaded into the sand tank 3, and then the power motor 73 in the composite mixing mechanism 7 is started to rotate its rotating shaft, and then the agitator shaft 76 is driven to rotate with the help of the diverter strip 725 and the rotating plate 74, and the sand entering the cylinder 1 is broken up by the rotating diverter strip 725 and falls to the top of the sieve plate 71 through the inner gear ring 72. Since the sieving gears 75 in each sieving combination are meshed with the inner gear ring 72, each sieving gear 75 will rotate while revolving, and then each sieving shaft 77 is used to drive each rotating rod 78 to rotate, so that the multiple sieving columns 79 on each rotating rod 78 rotate around the sieving shaft 77, and then the sand falling to the top of the sieve plate 71 is stirred to make it mixed, so that the sand with larger particle size is retained on the top of the sieve plate 71, and the sand that meets the particle size passes through the sieve plate 71 and falls to the outer wall of the conical guide piece 711.
[0022] The cement and water required for preparing concrete are loaded into the cement tank 4 and the water tank 5 respectively. The cement in the cement tank 4 and the water in the water tank 5 will enter the interior of the cylinder 1 and fall into the annular mixing trough 7103; the rotation of the stirring shaft 76 will also drive each scraper bar 713 to rotate with the help of the traction ring 712 in the pushing unit, thereby scraping the sand on the outer wall of the conical guide piece 711 into the annular mixing trough 7103; at the same time, each scraper bar 713 will also drive each pushing plate 714 to rotate in the annular mixing trough 7103, thereby pushing the sand, cement and water in the annular mixing trough 7103 to move in a circular manner and mix with each other to form concrete slurry while moving. Part of the concrete that contacts each pushing plate 714 will pass through the material passing hole 7141 to prevent the concrete slurry from overflowing.
[0023] The rotation of the stirring shaft 76 will also drive each toggle gear 720 to rotate around the stirring shaft 76 with the help of the rotating frame 719. When each toggle gear 720 contacts each discharge gear 721 during rotation, it will drive each discharge gear 721 to rotate a certain angle, so that the second discharge hole 7211 in each discharge gear 721 is located below a corresponding first discharge hole 7102. This allows the concrete slurry in the annular mixing trough 7103 to pass through each first discharge hole 7102 and a corresponding second discharge hole 7102. The material hole 7211 falls to the bottom of the cylinder 1, but when each toggle gear 720 leaves each discharge gear 721 during rotation, each discharge gear 721 will reverse and reset so that each second discharge hole 7211 is misaligned with a corresponding first discharge hole 7102, thereby preventing the concrete slurry in the annular mixing trough 7103 from falling. When each toggle gear 720 contacts each discharge gear 721 again during rotation, the concrete slurry can continue to fall, thereby achieving intermittent material dropping.
[0024] The rotation of the stirring shaft 76 will also drive the arc-shaped stirring bar 717 to rotate with the help of the seat block 715 and the thin rod 716, thereby continuously stirring the concrete slurry at the bottom of the cylinder 1 to prevent solidification; when the seat block 715 rotates, the bevel gear 724 on the stirring roller 722 in each auxiliary stirring combination will roll along the bevel gear ring 7181, thereby driving each bevel gear 724 to rotate, thereby driving each stirring roller 722 to rotate, thereby driving the stirring column 723 on each stirring roller 722 to rotate around the stirring roller 722, thereby breaking up the fallen concrete slurry again, and the liquid level of the concrete slurry at the bottom of the cylinder 1 should always be lower than the bevel gear ring 7181 to ensure the smooth rolling of the bevel gear 724.
[0025] After stirring for a certain period of time, the concrete slurry at the bottom of the cylinder 1 can be discharged outward by opening the discharge valve 6.
[0026] The utility model can automatically screen the sand before mixing to remove the sand with unqualified particle size, and then integrate the screening function of the sand to ensure the continuity of the concrete preparation process, thereby simplifying the operation steps; in addition, with the help of an intermittent drive unit, cement and water are first fully mixed with the sand to form slurry in the annular mixing trough 7103, and then dropped in batches in small amounts multiple times in an intermittent manner, and then the dropped slurry is broken up with the help of each auxiliary stirring combination, and finally the concrete slurry at the bottom of the cylinder 1 is continuously stirred with the help of the arc-shaped stirring bar 717, thereby completely avoiding the agglomeration of concrete and effectively ensuring that the sand can be smoothly and evenly integrated, thereby fully ensuring the quality of the concrete.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A concrete mixing device, comprising a cylinder, a cylinder cover detachably fixed to the top opening of the cylinder, and a discharge valve arranged at the bottom opening of the cylinder, characterized in that: The invention also includes a composite mixing mechanism, which includes a power motor fixed on the top of the cylinder cover, a sieve plate fixed transversely inside the tank body, an inverted cone mixing disk fixed transversely inside the tank body and located below the sieve plate, a stirring shaft vertically and rotatably interspersed in the center of the sieve plate and the inverted cone mixing disk, and a screening unit arranged above the sieve plate, wherein the screening unit includes an inner gear ring fixed transversely inside the tank body, a rotating plate transversely arranged above the inner gear ring, and two screening assemblies arranged at the bottom of the rotating plate and diagonally arranged to each other, and the upper end of the stirring shaft upwardly penetrates the inner gear ring and the rotating plate. The screen assembly comprises a screen gear which is laterally and rotatably connected to the bottom of the rotating plate and meshes with the inner side of the inner gear ring, a slewing rod which is laterally arranged below the screen gear, a screen shaft which is vertically arranged between the screen gear and the slewing rod, and a plurality of screen columns which are vertically fixed to the bottom of the slewing rod. The upper and lower ends of the screen shaft are respectively concentrically fixed to the bottom of the screen gear and the top of the slewing rod. The ends of each of the screen columns are The top of the sieve plate cooperates with each other; a conical convex cavity is formed upward at the center of the inner bottom surface of the inverted conical mixing disk, and an annular mixing trough is formed between the outer wall of the conical convex cavity and the inner wall of the inverted conical mixing disk; a plurality of first discharge holes uniformly distributed at equal angles in the circumferential direction are provided on the bottom surface of the annular mixing trough, and correspondingly, the same number of discharge gears uniformly distributed at equal angles in the circumferential direction are also provided below the inverted conical mixing disk, each of the discharge gears can be rotatably connected to the bottom of the inverted conical mixing disk and has an elastic rotation function, and each of the discharge gears can be rotatably connected to the bottom of the inverted conical mixing disk and has an elastic rotation function. A second discharge hole is provided in each material gear, and the position of each of the second discharge holes cooperates with the position of a corresponding first discharge hole. An intermittent drive unit is also provided under the inverted cone mixing plate, and the intermittent drive unit includes a rotating frame concentrically fixed on the stirring shaft and a plurality of toggle gears transversely fixed on the rotating frame and evenly distributed at equal angles along the circumferential direction. The number of the toggle gears is equal to the number of the discharge gears, and each of the toggle gears is provided on the inner side of any one of the discharge gears and cooperates with any one of the discharge gears.
2. A concrete mixing device according to claim 1, characterized in that: A concentrically arranged conical guide piece is also fixed to the top of the conical convex cavity, and a pushing unit is also provided between the conical guide piece and the screen plate, and the pushing unit includes a traction ring fixed on the stirring shaft and at least two scraping strips fixed obliquely on the traction ring and evenly arranged at equal angles along the circumferential direction, the lower side of each scraping strip is slidably fitted on the outer wall of the conical guide piece, and a pushing plate is also fixed at the end of each scraping strip, and a material passing hole is opened in each pushing plate; the cross-sectional shape of the annular mixing trough and the shape of the pushing plate are both inverted trapezoids.
3. A concrete mixing device according to claim 2, characterized in that: The composite mixing mechanism also includes a stirring unit, which includes a seat block fixed at the lower end of the stirring shaft, a thin rod vertically fixed to the bottom of the seat block and arranged concentrically with the stirring shaft, an arc-shaped stirring bar fixed to the end of the thin rod, and at least two auxiliary stirring assemblies arranged on the seat block and evenly distributed at equal angles along the circumferential direction.
4. A concrete mixing device according to claim 3, characterized in that: The auxiliary stirring combination includes a stirring roller that is laterally and rotatably connected to the outer wall of the seat block, a plurality of stirring columns fixed on the outer peripheral surface of the stirring roller, a bevel gear concentrically fixed to the center of the end of the stirring roller, and a limiting ring that is laterally fixed inside the tank body and located above the bevel gear, and a bevel gear ring arranged annularly is formed downward at the bottom of the limiting ring, and the bevel gear is meshed on the bevel gear ring.
5. A concrete mixing device according to claim 4, characterized in that: It also includes a sand tank arranged above the cylinder cover, and a cement tank and a water storage tank arranged outside the cylinder body. The bottom opening of the sand tank is inserted into the top side of the cylinder cover and is communicated with the interior of the cylinder body. The bottom openings of the cement tank and the water storage tank are both inserted into the outer wall of the cylinder body and are communicated with the interior of the cylinder body and are both located between the inverted cone mixing disk and the screen plate.
6. A concrete mixing device according to claim 5, characterized in that: A transversely arranged diverter strip is also fixed on the top of the rotating plate, and the cross-sectional shape of the diverter strip is an isosceles triangle. The rotating shaft of the power motor vertically passes through the cylinder cover downward and is fixed on the diverter strip and is arranged concentrically with the top of the rotating plate.
Citation Information
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