Automatic concrete stirring and conveying device and using method thereof

Abstract

The invention discloses an automatic concrete stirring and conveying device and a using method thereof.The device comprises a pre-stirring unit, a double-tank conveying and pre-mixing unit, a double-tank pre-mixing interval water adding unit and a main stirrer, and the pre-stirring unit comprises a main body, two pre-stirring tanks arranged in the main body and a stirring mechanism fixedly connected with the top of the main body; the double-tank conveying and premixing unit is fixedly communicated with discharging pipes at the bottoms of the two premixing tanks, the double-tank conveying and premixing unit is used for premixing premixed materials in the two premixing tanks and then conveying the premixed materials into a main stirrer, and the double-tank premixing interval water adding unit is connected with the double-tank conveying and premixing unit. And the main stirrer is positioned at the bottom end of the double-tank conveying and premixing unit and is fixedly connected with the double-tank conveying and premixing unit. According to the invention, concrete raw materials can be premixed for multiple times, so that the subsequent stirring efficiency can be improved, in addition, when two premixes are mixed, water is added at intervals, the generation of bubbles and gaps can be reduced, and the concrete is more compact.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete mixing, and in particular to an automatic concrete mixing and conveying device and a use method thereof. Background Art

[0002] Traditional concrete mixing and conveying devices have many shortcomings, especially in premixing and water addition control. First of all, existing devices generally lack the premixing function, that is, the concrete raw materials are not preliminarily mixed before mixing, resulting in low efficiency in the subsequent mixing process and difficulty in uniform concrete quality. In addition, in the water adding stage, the existing devices generally pour water directly into the main mixer and mix it together with all the raw materials. This practice ignores the importance of premixing between water and premix, and fails to use the premix as a carrier so that the water can be dispersed and moistened to a certain extent before being added to the main mixer. This not only further reduces the mixing efficiency, but may also cause uneven water distribution inside the concrete. In addition, adding a large amount of water at one time may cause bubbles and voids in the concrete, affecting the density and strength of the concrete. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic concrete mixing and conveying device, mainly comprising:

[0005] A pre-mixing unit, the pre-mixing unit comprising a main body, two pre-mixing tanks arranged in the main body, and a mixing mechanism fixedly connected to the top of the main body;

[0006] A double tank conveying and premixing unit, wherein the double tank conveying and premixing unit is fixedly connected to the discharge pipes at the bottom of the two premixing tanks, and is used to premix the premixed materials in the two premixing tanks and then convey them to the main mixer;

[0007] A double tank premixing interval water adding unit, the double tank premixing interval water adding unit is located between the premixing unit and the double tank conveying and premixing unit, and is connected to the double tank conveying and premixing unit;

[0008] A total mixer is located at the bottom end of the double tank conveying and premixing unit and is fixedly connected to the double tank conveying and premixing unit.

[0009] As a preferred solution of the automated concrete mixing and conveying device of the present invention, feeding pipes are provided on both sides of the main body, a pair of the feeding pipes are fixedly connected to the upper sides of the two pre-mixing tanks respectively, and a solenoid valve is installed on the discharge pipe at the bottom of the pre-mixing tank.

[0010] As a preferred solution of the automated concrete mixing and conveying device of the present invention, the mixing mechanism includes a mounting frame fixedly connected to the top of the main body, a mixing motor fixedly connected to the top of the mounting frame, and a driving gear fixedly connected to the output shaft at the bottom of the mixing motor, the driving gear is meshed and connected with driven gears on both sides, a pair of stirring rods are fixedly connected at the bottom center of the driven gears, the bottom ends of the pair of stirring rods extend into two pre-mixing tanks respectively, and the pair of stirring rods are rotatably connected to the tops of the two pre-mixing tanks through bearings.

[0011] As a preferred solution of the automatic concrete mixing and conveying device of the present invention, the double-tank conveying and premixing unit includes a double-tank conveying premixing box, a discharge pipe is fixedly connected at the center of the bottom of the double-tank conveying premixing box, and the discharge pipe is fixedly connected to the top of the main mixer, a pair of first rotating shafts are symmetrically connected to the inside of the double-tank conveying premixing box, and the pair of first rotating shafts are fixedly connected to spiral conveying blades, and the two spiral conveying blades rotate in opposite directions, and the bottoms of both sides of the double-tank conveying premixing box are fixedly connected to support plates, and the bottom of the support plate is fixedly connected to the top of the main mixer;

[0012] A pair of first conical teeth are symmetrically fixed to opposite ends of a pair of the first rotating shafts, and a driving mechanism is connected between the pair of first conical teeth.

[0013] As a preferred embodiment of the automated concrete mixing and conveying device of the present invention, the driving mechanism includes a driving motor fixedly connected to the center of the bottom of the main body, a second rotating shaft is fixedly connected to the bottom output end of the driving motor, the bottom end of the second rotating shaft is movably inserted into the double-tank conveying premix box and extends into the discharge pipe, the second rotating shaft is rotatably connected to the top of the double-tank conveying premix box through a bearing, the outside of the second rotating shaft is fixedly sleeved with a second conical tooth in the double-tank conveying premix box, the bottoms of both sides of the second conical tooth are respectively meshed and connected with a pair of first conical tooth tops, and the outside of the second rotating shaft is fixedly connected with a spiral mixing and conveying blade in the discharge pipe.

[0014] As a preferred embodiment of the automated concrete mixing and conveying device of the present invention, the double-tank premixing interval water adding unit includes an extrusion mechanism located above the double-tank conveying premixing box and a water supply mechanism fixedly connected to the double-tank conveying premixing box, the extrusion mechanism is fixedly sleeved on the outside of the second rotating shaft and connected to the water supply mechanism, and when the extrusion mechanism generates an extrusion force on the water supply mechanism, water can be supplied to the discharge pipe.

[0015] As a preferred solution of the automated concrete mixing and conveying device of the present invention, the extrusion mechanism includes a rotating disk fixedly sleeved on the outside of the second rotating shaft, and support rods are fixedly connected in a circular array on the circumference of the rotating disk, and an arc-shaped extrusion plate is fixedly connected to one end of the support rod away from the rotating disk.

[0016] As a preferred solution of the automatic concrete mixing and conveying device of the present invention, the water supply mechanism includes a support plate fixedly connected to one side of the double-tank conveying premixing box, a water storage tank fixedly connected to the top of the support plate, and a water supply transition box located between the extrusion mechanism and the water storage tank, a water outlet pipe is fixedly connected between the top of the water supply transition box on the side away from the extrusion mechanism and the bottom of the water storage tank on the side, a T-shaped water flow pipe is fixedly connected to the bottom of the water supply transition box on the side facing the extrusion mechanism, an annular pipe is fixedly connected to one end of the T-shaped water flow pipe away from the water supply transition box, a drainage pipe is fixedly connected to the bottom of the annular pipe in an annular array, the bottom end of the drainage pipe is inserted into the double-tank conveying premixing box and is fixedly connected to a nozzle, and the movable cover of the annular pipe is arranged outside the second rotating shaft, and the center of the annular pipe is on the central axis of the second rotating shaft;

[0017] A sealing component is arranged in the water supply transition box, and the sealing component is used to seal the inner end of the T-shaped water flow pipe. The sealing component is arranged to slide and seal through one side of the water supply transition box, and when the arc extrusion plate exerts differential extrusion pressure on the sealing component, the seal of the T-shaped water flow pipe can be released.

[0018] As a preferred solution of the automatic concrete mixing and conveying device described in the present invention, the sealing assembly includes a blocking plate movably arranged in the water supply transition box, a sealing rubber pad and a movable rod fixedly connected to the side of the blocking plate facing the T-shaped water pipe, and a force block fixedly connected to the end of the movable rod away from the blocking plate, the blocking plate corresponds to the inner end of the T-shaped water pipe, and the sealing rubber pad seals and movably presses against the inner end of the T-shaped water pipe, the movable rod seals and slides through the water supply transition box, the force block is arranged corresponding to the rotating disk, a reset spring is fixedly connected between the force block and the outer side wall of the water supply transition box, and the reset spring is movably sleeved on the outside of the movable rod, during the rotation of the rotating disk, when the arc extrusion plate passes through the force block, it can generate an extrusion force on the force block, thereby making the sealing rubber pad away from the T-shaped water pipe and starting water supply, when the arc extrusion plate rotates away from the force block, the sealing rubber pad is reset and pressed against the inner end of the T-shaped water pipe under the action of the rebound force of the reset spring, and the water supply is stopped.

[0019] The method for using the above-mentioned automatic concrete mixing and conveying device comprises the following steps:

[0020] Step 1: First, cement and fly ash are added into one of the pre-mixing tanks through a feeding pipe in a certain proportion, and sand and stone are added into another pre-mixing tank through a feeding pipe in a certain proportion, and then the mixing motor is started, and the mixing motor drives the driving gear to rotate, and the driving gear drives a pair of driven gears to rotate at the same time, and the pair of driven gears respectively drive a pair of stirring rods to rotate and stir in the two pre-mixing tanks, so as to pre-mix the raw materials in the two pre-mixing tanks;

[0021] Step 2: After premixing, open the solenoid valve on the discharge pipe at the bottom of the premixing tank to discharge the premixes in the two premixing tanks into the double-tank conveying premixing box, and start the drive motor. When the drive motor is running, it drives the second rotating shaft to rotate, and the second rotating shaft drives the second conical teeth and the spiral stirring and conveying blades to rotate. When the second conical teeth rotate, they also drive a pair of first conical teeth meshing with them to rotate, and the first conical teeth drive the first rotating shaft to rotate, and the first rotating shaft drives the spiral conveying blades to rotate. Since the two spiral conveying blades have opposite rotation directions, the premixes in the two premixing tanks can be conveyed to the discharge pipe, and then the two premixes in the two premixing tanks are stirred and premixed again by the spiral stirring and conveying blades, and finally discharged into the main mixer for more sufficient stirring and mixing;

[0022] Step three: In addition, when the second rotating shaft rotates, it also drives the rotating disk to rotate, and the rotating disk drives the arc extrusion plate to rotate through the support rod. When the arc extrusion plate rotates along the force-bearing block, it can squeeze the force-bearing block, and the force-bearing block drives the movable rod to move toward the inner direction of the water supply transition box, and the reset spring is compressed. The movable rod drives the sealing rubber pad to separate from the inner end of the T-shaped water flow pipe through the blocking plate. After separation, the water in the water storage tank enters the water supply transition box through the outlet pipe, and then flows into the T-shaped water flow pipe, the annular pipe and the drain pipe from the water supply transition box, and is sprayed into the discharge pipe by several nozzles. Under the action of the spiral stirring and conveying blades, the pancake is pre-mixed with the two premixed materials in the two pre-mixing tanks. When the arc extrusion plate is rotated out from the force block, the force block is reset under the action of the rebound force of the reset spring, and at the same time drives the sealing rubber pad to reset and press against the inner end of the T-shaped water flow pipe to stop water supply. Such a reciprocating cycle can achieve the effect of interval water supply.

[0023] Beneficial effects of the present invention:

[0024] 1. When the present invention is used, cement and fly ash, sand and stone are respectively placed in two pre-mixing tanks according to a certain proportion for pre-mixing, and then the two pre-mixed materials in the two pre-mixing tanks are sent to the discharge pipe for pre-mixing again through the coordinated use of spiral conveying blades, first conical teeth, second conical teeth, driving motors, etc., and then sent to the main mixer for thorough mixing. The overall operation is simple, and the concrete raw materials can be pre-mixed for multiple times, thereby improving the subsequent mixing efficiency and helping to improve the quality of concrete.

[0025] 2. In the process of mixing two premixes in two premixing tanks, the present invention can premix water and premixes through the coordinated use of a fixed plate, an arc-shaped extrusion plate, a force-bearing block, a return spring, a sealing rubber pad, etc., so that the water can be dispersed and moistened to a certain extent before being added to the main mixer, thereby further improving the mixing efficiency and not easily causing the problem of uneven water distribution inside the concrete. In addition, the intermittent addition of water helps to control the rate of the hydration reaction, thereby forming more hydration products and improving the strength and durability of the concrete. In addition, the intermittent addition of water can reduce the generation of bubbles and voids, making the concrete denser. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0027] Figure 1The figure is a schematic diagram of the overall structure of an automatic concrete mixing and conveying device of the present invention.

[0028] Figure 2 The present invention is a schematic structural diagram of a pre-mixing unit of an automated concrete mixing and conveying device.

[0029] Figure 3 The present invention is a schematic diagram of the connection structure of a double-tank conveying and premixing unit and a double-tank premixing interval water adding unit of an automated concrete mixing and conveying device.

[0030] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a double-tank conveying and premixing unit and a double-tank conveying and premixing unit of an automated concrete mixing and conveying device of the present invention.

[0031] Figure 5 The present invention is a schematic structural diagram of a driving mechanism of an automatic concrete mixing and conveying device.

[0032] Figure 6 It is a structural schematic diagram of a double-tank premixing interval water adding unit of an automated concrete mixing and conveying device of the present invention.

[0033] Figure 7 The present invention is a schematic structural diagram of an extrusion mechanism of an automatic concrete mixing and conveying device.

[0034] Figure 8 The present invention is a schematic structural diagram of a water supply mechanism of an automated concrete mixing and conveying device.

[0035] Fig. 9 The present invention is a schematic structural diagram of a sealing assembly of an automated concrete mixing and conveying device.

[0036] Fig.10 The present invention is a structural schematic diagram of an automatic concrete mixing and conveying device in which an extrusion mechanism applies force to a force-bearing block.

[0037] In the figure: 100, pre-mixing unit; 101, main body; 102, pre-mixing tank; 103, mixing mechanism; 103-1, mounting frame; 103-2, mixing motor; 103-3, driving gear; 103-4, driven gear; 103-5, mixing rod; 104, feeding pipe; 200, double tank conveying and pre-mixing unit; 201, double tank conveying pre-mixing box; 202, discharge pipe; 203, first rotating shaft; 204, spiral conveying blade; 205, first conical tooth; 206, driving mechanism; 206-1, driving motor; 206-2, second rotating shaft; 206-3, second conical tooth; 206-4, spiral stirring conveying blade; 207, Support plate; 300, double tank premix interval water adding unit; 301, extrusion mechanism; 301-1, rotating disk; 301-2, support rod; 301-3, arc extrusion plate; 302, water supply mechanism; 302-1, bracket plate; 302-2, water storage tank; 302-3, water supply transition box; 302-4, water outlet pipe; 302-5, T-type water flow pipe; 302-6, ring pipe; 302-7, drain pipe; 302-8, nozzle; 302-9, sealing assembly; 302-91, blocking plate; 302-92, sealing rubber pad; 302-93, movable rod; 302-94, force block; 302-95, reset spring; 400, total mixer. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0041] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0042] Example 1

[0043] Reference Figure 1-6 , which is the first embodiment of the present invention, provides an automatic concrete mixing and conveying device, which mainly includes:

[0044] Pre-mixing unit 100, such as Figure 1 The pre-mixing unit 100 includes a main body 101, two pre-mixing tanks 102 disposed in the main body 101, and a mixing mechanism 103 fixedly connected to the top of the main body 101;

[0045] Feeding pipes 104 are provided on both sides of the main body 101. A pair of feeding pipes 104 are respectively fixedly connected to the upper sides of the two pre-mixing tanks 102. When in use, concrete raw materials are added into the pre-mixing tank 102 through the feeding pipes 104. A solenoid valve is installed on the discharge pipe at the bottom of the pre-mixing tank 102 to control the discharge of the pre-mixed material.

[0046] like Figure 2 The stirring mechanism 103 includes a mounting frame 103-1 fixedly connected to the top of the main body 101, a stirring motor 103-2 fixedly connected to the top of the mounting frame 103-1, and a driving gear 103-3 fixedly connected to the output shaft at the bottom of the stirring motor 103-2. The driving gear 103-3 is meshed with driven gears 103-4 on both sides. A pair of stirring rods 103-5 are fixedly connected at the bottom center of the driven gears 103-4. The bottom ends of the pair of stirring rods 103-5 extend into the two pre-mixing tanks 102 respectively, and the pair of stirring rods 103-5 are rotatably connected to the tops of the two pre-mixing tanks 102 through bearings. During premixing, cement and fly ash are added into one of the premixing tanks 102 through the feeding pipe 104 in a certain proportion, and sand and stone are added into the other premixing tank 102 through the feeding pipe 104 in a certain proportion, and then the mixing motor 103-2 is started, and the driving gear 103-3 is driven to rotate by the mixing motor 103-2, and the driving gear 103-3 simultaneously drives a pair of driven gears 103-4 to rotate, and the pair of driven gears 103-4 respectively drive a pair of stirring rods 103-5 to rotate and stir in the two premixing tanks 102, so that the raw materials in the two premixing tanks 102 are premixed. The overall operation is simple and can improve the concrete mixing efficiency.

[0047] Dual tank delivery and premixing unit 200, such as Figure 1 The double-tank conveying and premixing unit 200 is fixedly connected to the bottom discharge pipes of the two pre-mixing tanks 102 , and the double-tank conveying and premixing unit 200 is used to premix the premixed materials in the two pre-mixing tanks 102 and then convey them to the main mixer 400 .

[0048] Double tank premix interval water adding unit 300, such as Figure 1The double-tank premixing interval water adding unit 300 is located between the premixing unit 100 and the double-tank conveying and premixing unit 200 , and is connected to the double-tank conveying and premixing unit 200 .

[0049] Total mixer 400, such as Figure 1 The main mixer 400 is located at the bottom of the double-tank conveying and premixing unit 200 and is fixedly connected to the double-tank conveying and premixing unit 200. The main mixer 400 is a horizontal mixer.

[0050] Specifically, Figure 3-4 The double tank conveying and premixing unit 200 includes a double tank conveying premixing box 201. A discharge pipe 202 is fixedly connected at the bottom center of the double tank conveying premixing box 201 for discharging the premixed material into the main mixer 400 for thorough mixing. The discharge pipe 202 is fixedly connected to the top of the main mixer 400. A pair of first rotating shafts 203 are symmetrically connected to the double tank conveying premixing box 201 for rotation. The first rotating shaft 203 and the double tank conveying premixing box 201 are rotatably connected by bearings. A pair of first rotating shafts 203 are fixedly connected to spiral conveying blades 204, and the two spiral conveying blades 204 rotate in opposite directions. The purpose of this arrangement is to When the premixes in the two premixing tanks 102 fall onto the two spiral conveying blades 204 respectively, the two premixes can be simultaneously conveyed to the discharge pipe 202 through the two spiral conveying blades 204 with opposite rotation directions; a pair of first cone teeth 205 are symmetrically fixedly connected to the opposite ends of a pair of first rotating shafts 203, and a driving mechanism 206 is connected between the pair of first cone teeth 205. The driving mechanism 206 is provided to drive the pair of first cone teeth 205 to rotate, thereby driving the first rotating shaft 203 and the spiral conveying blades 204 to rotate through the first cone teeth 205, so as to achieve the purpose of conveying the premixes. Support plates 207 are fixedly connected to the bottom of both sides of the double-tank conveying premixing box 201, and the bottom of the support plate 207 is fixedly connected to the top of the main mixer 400, which is used to support the double-tank conveying premixing box 201.

[0051] Furthermore, if Figure 5The driving mechanism 206 includes a driving motor 206-1 fixedly connected to the bottom center of the main body 101 by bolts, and a second rotating shaft 206-2 is fixedly connected to the bottom output end of the driving motor 206-1. The bottom end of the second rotating shaft 206-2 is movably inserted into the double-tank conveying premix box 201 and extends into the discharge pipe 202. The second rotating shaft 206-2 is rotatably connected to the top of the double-tank conveying premix box 201 through a bearing. The outside of the second rotating shaft 206-2 is fixedly sleeved with a second conical tooth 206-3 in the double-tank conveying premix box 201. The bottoms of both sides of the second conical tooth 206-3 are respectively meshed with the tops of a pair of first conical teeth 205. Therefore, when the second rotating shaft 206-2 and the second conical tooth 206-3 are driven to rotate by the driving motor 206-1, the second conical tooth 206-3 can simultaneously drive the pair of first conical teeth 205 to rotate. The outside of the second rotating shaft 206-2 is fixedly connected to the discharge pipe 202 with a spiral stirring and conveying blade 206-4. The purpose of this arrangement is that when the two premixes are conveyed into the discharge pipe 202, the two premixes can be stirred and premixed together through the spiral stirring and conveying blade 206-4, thereby improving the subsequent mixing efficiency.

[0052] Specifically, Figure 6The double tank premixing interval water adding unit 300 includes a water supply mechanism 302 fixedly connected to the double tank conveying premixing box 201, and the water supply mechanism 302 includes a support plate 302-1 fixedly connected to one side of the double tank conveying premixing box 201, a water storage tank 302-2 fixedly connected to the top of the support plate 302-1, and a water supply transition box 302-3 located between the extrusion mechanism 301 and the water storage tank 302-2. Among them, the water storage tank 302-2 is made of transparent material, and the outer wall of the water storage tank 302-2 is engraved with standard scale lines, so that the water storage amount in the water storage tank 302-2 can be intuitively seen, so that the amount of water added can be accurately controlled during the concrete preparation process. A water outlet pipe 302-4 is fixedly connected between the top of the side of the water supply transition box 302-3 away from the squeezing mechanism 301 and the bottom of the side of the water storage tank 302-2. A valve is installed on the water outlet pipe 302-4 near the water storage tank 302-2. When adding water to the water storage tank 302-2, the valve can be closed, and then the required water can be added according to the scale value of the standard scale line. In addition, the bottom of the water storage tank 302-2 is higher than the top of the water supply transition box 302-3, so that the water in the water storage tank 302-2 can automatically flow into the water supply transition box 302-3 through the water outlet pipe 302-4, and there is no need to install additional equipment such as a water pump. A T-shaped water flow pipe 302-5 is fixedly connected to the bottom of the water supply transition box 302-3 on one side facing the extrusion mechanism 301, and a ring pipe 302-6 is fixedly connected to the end of the T-shaped water flow pipe 302-5 away from the water supply transition box 302-3. The bottom of the ring pipe 302-6 is fixedly connected to a drainage pipe 302-7 in a circular array. The bottom end of the drainage pipe 302-7 is inserted into the double-tank conveying premixing box 201 and is fixedly connected to a nozzle 302-8. The movable cover of the ring pipe 302-6 is arranged on the outside of the second rotating shaft 206-2, and the center of the ring pipe 302-6 is on the central axis of the second rotating shaft 206-2. When the premix in the double tanks is transported to the discharge pipe 202, the valve on the outlet pipe 302-4 is opened, and the water in the water storage tank 302-2 flows into the water supply transition box 302-3 through the outlet pipe 302-4, and then flows from the water supply transition box 302-3 into the T-shaped water pipe 302-5, the ring pipe 302-6, and the drain pipe 302-7, and then is sprayed into the discharge pipe 202 by the nozzle 302-8 to mix with the premix, so that the water can be dispersed and moistened to a certain extent before being added to the main mixer 400, thereby further improving the mixing efficiency.

[0053] Example 2

[0054] Reference Figure 7-10, which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the double tank premixing interval water adding unit 300 also includes an extrusion mechanism 301 located above the double tank conveying premixing box 201, the extrusion mechanism 301 is fixedly sleeved on the outside of the second rotating shaft 206-2, and is connected to the water supply mechanism 302. When the extrusion mechanism 301 generates an extrusion force on the water supply mechanism 302, water can be supplied to the discharge pipe 202. A sealing component 302-9 is arranged in the water supply transition box 302-3, and the sealing component 302-9 is used to block the inner end of the T-shaped water flow pipe 302-5. The sealing component 302-9 is arranged to slide and seal through one side of the water supply transition box 302-3, and when the arc-shaped extrusion plate 301-3 generates an extrusion force on the sealing component 302-9, the sealing of the T-shaped water flow pipe 302-5 can be released.

[0055] Specifically, Figure 7 The extrusion mechanism 301 includes a rotating disk 301-1 fixedly sleeved on the outside of the second rotating shaft 206-2, and the rotating disk 301-1 is fixedly connected to support rods 301-2 in an annular array around the rotating disk 301-1, and the end of the support rods 301-2 away from the rotating disk 301-1 is fixedly connected to an arc-shaped extrusion plate 301-3.

[0056] Specifically, Fig. 9 The sealing assembly 302-9 includes a blocking plate 302-91 movably arranged in the water supply transition box 302-3, a sealing rubber pad 302-92 and a movable rod 302-93 fixedly connected to the side of the blocking plate 302-91 facing the T-shaped water pipe 302-5, and a force block 302-94 fixedly connected to the end of the movable rod 302-93 away from the blocking plate 302-91. The blocking plate 302-91 corresponds to the inner end of the T-shaped water pipe 302-5, and the sealing rubber pad 302-92 is sealed and pressed against the inner end of the T-shaped water pipe 302-5. The movable rod 302-93 is sealed. The sealing slide is set through the water supply transition box 302-3, the force block 302-94 is set corresponding to the rotating disk 301-1, and a return spring 302-95 is fixedly connected between the force block 302-94 and the outer wall of the water supply transition box 302-3. The return spring 302-95 is movably sleeved on the outside of the movable rod 302-93. During the rotation of the rotating disk 301-1, when the arc-shaped extrusion plate 301-3 passes through the force block 302-94, it can generate an extrusion force on the force block 302-94, so that the sealing rubber pad 302-92 is away from the T-shaped water pipe 302-5, and water supply starts (such as Fig.10), when the arc extrusion plate 301-3 rotates away from the force block 302-94, the sealing rubber pad 302-92 is reset and pressed against the inner end of the T-shaped water pipe 302-5 under the action of the rebound force of the reset spring 302-95, and the water supply is stopped. Therefore, in the process of the rotating disk 301-1 driving the multiple arc extrusion plates 301-3 to rotate, the T-shaped water pipe 302-5 can be opened and closed back and forth, thereby achieving the effect of intermittent water supply, which helps to control the rate of the hydration reaction, thereby forming more hydration products, and improving the strength and durability of the concrete. In addition, intermittent water addition can reduce the generation of bubbles and voids, making the concrete denser.

[0057] The remaining structures are the same as those of Example 1.

[0058] The method of using the above automatic concrete mixing and conveying device is as follows: first, cement and fly ash are added into one of the pre-mixing tanks 102 through the feeding pipe 104 in a certain proportion, and sand and stone are added into the other pre-mixing tank 102 through the feeding pipe 104 in a certain proportion, and then the mixing motor 103-2 is started, and the mixing motor 103-2 drives the driving gear 103-3 to rotate, and the driving gear 103-3 drives a pair of driven gears 103-4 to rotate at the same time, and the pair of driven gears 103-4 respectively drive a pair of stirring rods 103-5 to rotate and stir in the two pre-mixing tanks 102, so as to pre-mix the raw materials in the two pre-mixing tanks 102;

[0059] After premixing, the solenoid valve on the discharge pipe at the bottom of the premixing tank 102 is opened to discharge the premixed materials in the two premixing tanks 102 into the double tank conveying premixing box 201, and the drive motor 206-1 is started. When the drive motor 206-1 is running, it drives the second rotating shaft 206-2 to rotate, and the second rotating shaft 206-2 drives the second conical teeth 206-3 and the spiral stirring and conveying blades 206-4 to rotate. When the second conical teeth 206-3 rotate, they also drive a pair of first The conical teeth 205 rotate, the first conical teeth 205 drive the first rotating shaft 203 to rotate, and the first rotating shaft 203 drives the spiral conveying blade 204 to rotate. Since the two spiral conveying blades 204 rotate in opposite directions, the premixes in the two premixing tanks 102 can be conveyed to the discharge pipe 202, and then the two premixes in the two premixing tanks 102 are stirred and premixed again by the spiral stirring and conveying blades 206-4, and finally discharged into the main mixer 400 for more sufficient stirring and mixing;

[0060] In addition, when the second rotating shaft 206-2 rotates, it also drives the rotating disk 301-1 to rotate. The rotating disk 301-1 drives the arc extrusion plate 301-3 to rotate through the support rod 301-2. When the arc extrusion plate 301-3 rotates along the force block 302-94, it can squeeze the force block 302-94. The force block 302-94 drives the movable rod 302-93 to move toward the inner direction of the water supply transition box 302-3, and the reset spring 302-95 is compressed. The movable rod 302-93 drives the sealing rubber pad 302-92 to separate from the inner end of the T-shaped water flow pipe 302-5 through the sealing plate 302-91. After separation, the water in the water storage tank 302-2 enters the water supply through the outlet pipe 302-4. The water flows into the water transition box 302-3, and then flows into the T-shaped water flow pipe 302-5, the ring pipe 302-6 and the drain pipe 302-7 from the water supply transition box 302-3, and is sprayed into the discharge pipe 202 by a plurality of nozzles 302-8. Under the action of the spiral stirring and conveying blades 206-4, the water is premixed with the two premixed materials in the two pre-mixing tanks 102. When the arc extrusion plate 301-3 is rotated out from the force block 302-94, the force block 302-94 is reset under the action of the rebound force of the reset spring 302-95, and at the same time, the sealing rubber pad 302-92 is reset and pressed against the inner end of the T-shaped water flow pipe 302-5 to stop the water supply. Such a reciprocating cycle can achieve the effect of interval water supply.

[0061] It is worth noting that the entire device is controlled by a controller. Since the controller is a commonly used device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0062] 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An automated concrete mixing and conveying device, characterized in that: include: A pre-mixing unit (100), the pre-mixing unit (100) comprising a main body (101), two pre-mixing tanks (102) arranged in the main body (101), and a mixing mechanism (103) fixedly connected to the top of the main body (101); A double tank conveying and premixing unit (200), wherein the double tank conveying and premixing unit (200) is fixedly connected to the bottom discharge pipes of the two premixing tanks (102), and the double tank conveying and premixing unit (200) is used to premix the premixed materials in the two premixing tanks (102) and then convey them to the main mixer (400); A double tank premixing interval water adding unit (300), wherein the double tank premixing interval water adding unit (300) is located between the premixing unit (100) and the double tank conveying and premixing unit (200), and is connected to the double tank conveying and premixing unit (200); A main mixer (400), the main mixer (400) is located at the bottom end of the double tank conveying and premixing unit (200), and is fixedly connected to the double tank conveying and premixing unit (200).

2. The automated concrete mixing and conveying device according to claim 1, characterized in that: Feeding pipes (104) are provided on both left and right sides of the main body (101), and a pair of the feeding pipes (104) are respectively fixedly connected to the upper sides of the two pre-mixing tanks (102), and a solenoid valve is installed on the discharge pipe at the bottom of the pre-mixing tank (102).

3. The automated concrete mixing and conveying device according to claim 1, characterized in that: The stirring mechanism (103) comprises a mounting frame (103-1) fixedly connected to the top of the main body (101), a stirring motor (103-2) fixedly connected to the top of the mounting frame (103-1), and a driving gear (103-3) fixedly connected to the output shaft at the bottom of the stirring motor (103-2); the driving gear (103-3) is meshedly connected to driven gears (103-4) on both sides; a pair of stirring rods (103-5) are fixedly connected at the center of the bottom of the driven gears (103-4); the bottom ends of the pair of stirring rods (103-5) extend into the two pre-stirring tanks (102) respectively; and the pair of stirring rods (103-5) are rotatably connected to the tops of the two pre-stirring tanks (102) via bearings.

4. The automated concrete mixing and conveying device according to claim 1, characterized in that: The double tank conveying and premixing unit (200) comprises a double tank conveying premixing box (201), a discharge pipe (202) is fixedly connected at the center of the bottom of the double tank conveying premixing box (201), and the discharge pipe (202) is fixedly connected to the top of the main mixer (400); a pair of first rotating shafts (203) are symmetrically connected to the inside of the double tank conveying premixing box (201), and the pair of first rotating shafts (203) are fixedly connected to spiral conveying blades (204), and the two spiral conveying blades (204) rotate in opposite directions; support plates (207) are fixedly connected to the bottom of both sides of the double tank conveying premixing box (201), and the bottom of the support plate (207) is fixedly connected to the top of the main mixer (400); A pair of first conical teeth (205) are symmetrically fixedly connected to opposite ends of a pair of the first rotating shafts (203), and a driving mechanism (206) is connected between the pair of first conical teeth (205).

5. The automated concrete mixing and conveying device according to claim 4, characterized in that: The driving mechanism (206) comprises a driving motor (206-1) fixedly connected to the center of the bottom of the main body (101); a second rotating shaft (206-2) is fixedly connected to the bottom output end of the driving motor (206-1); the bottom end of the second rotating shaft (206-2) is movably inserted into the double-tank conveying premixing box (201) and extends into the discharge pipe (202); the second rotating shaft (206-2) is rotatably connected to the top of the double-tank conveying premixing box (201) via a bearing; the second rotating shaft (206-2) is externally fixedly sleeved with a second conical tooth (206-3) in the double-tank conveying premixing box (201); the bottoms of both sides of the second conical tooth (206-3) are respectively meshed with the tops of a pair of first conical teeth (205); and the second rotating shaft (206-2) is externally fixedly connected with a spiral stirring and conveying blade (206-4) in the discharge pipe (202).

6. The automated concrete mixing and conveying device according to claim 1, characterized in that: The double-tank premixing interval water adding unit (300) comprises an extrusion mechanism (301) located above the double-tank conveying premixing box (201) and a water supply mechanism (302) fixedly connected to the double-tank conveying premixing box (201); the extrusion mechanism (301) is fixedly sleeved on the outside of the second rotating shaft (206-2) and connected to the water supply mechanism (302); when the extrusion mechanism (301) generates an extrusion force on the water supply mechanism (302), water can be supplied to the discharge pipe (202).

7. The automated concrete mixing and conveying device according to claim 6, characterized in that: The extrusion mechanism (301) comprises a rotating disk (301-1) fixedly sleeved on the outside of the second rotating shaft (206-2), the rotating disk (301-1) is fixedly connected to support rods (301-2) in an annular array around the rotating disk (301-1), and one end of the support rods (301-2) away from the rotating disk (301-1) is fixedly connected to an arc-shaped extrusion plate (301-3).

8. The automated concrete mixing and conveying device according to claim 6, characterized in that: The water supply mechanism (302) comprises a support plate (302-1) fixedly connected to one side of the double-tank delivery premixing box (201), a water storage tank (302-2) fixedly connected to the top of the support plate (302-1), and a water supply transition box (302-3) located between the extrusion mechanism (301) and the water storage tank (302-2), wherein a water outlet pipe (302-4) is fixedly connected between the top of a side of the water supply transition box (302-3) away from the extrusion mechanism (301) and the bottom of a side of the water storage tank (302-2), and the bottom of a side of the water supply transition box (302-3) facing the extrusion mechanism (301) is connected to the water outlet pipe (302-4). A T-shaped water flow pipe (302-5) is fixedly connected, one end of the T-shaped water flow pipe (302-5) away from the water supply transition box (302-3) is fixedly connected to a ring pipe (302-6), the bottom of the ring pipe (302-6) is fixedly connected to a drainage pipe (302-7) in a circular array, the bottom end of the drainage pipe (302-7) is inserted into the double-tank conveying premixing box (201) and is fixedly connected to a nozzle (302-8), the movable cover of the ring pipe (302-6) is arranged outside the second rotating shaft (206-2), and the center of the ring pipe (302-6) is on the central axis of the second rotating shaft (206-2); A sealing component (302-9) is arranged in the water supply transition box (302-3), and the sealing component (302-9) is used to seal the inner end of the T-shaped water flow pipe (302-5). The sealing component (302-9) is arranged to slide and seal through one side of the water supply transition box (302-3), and when the arc-shaped extrusion plate (301-3) exerts a differential extrusion force on the sealing component (302-9), the sealing of the T-shaped water flow pipe (302-5) can be released.

9. The automated concrete mixing and conveying device according to claim 8, characterized in that: The sealing assembly (302-9) comprises a blocking plate (302-91) movably arranged in the water supply transition box (302-3), a sealing rubber pad (302-92) and a movable rod (302-93) fixedly connected to a side of the blocking plate (302-91) facing the T-shaped water pipe (302-5), and a force block (302-94) fixedly connected to an end of the movable rod (302-93) away from the blocking plate (302-91), the blocking plate (302-91) corresponds to the inner end of the T-shaped water pipe (302-5), and the sealing rubber pad (302-92) seals and movably presses against the inner end of the T-shaped water pipe (302-5), the movable rod (302-93) seals and slides through the water supply transition box (302-3), and the force block (302-94) is fixedly connected to the rotating disk (301- 1) A corresponding arrangement is provided, wherein a return spring (302-95) is fixedly connected between the force-bearing block (302-94) and the outer side wall of the water supply transition box (302-3); the return spring (302-95) is movably sleeved on the outside of the movable rod (302-93); when the rotating disk (301-1) rotates, the arc-shaped extrusion plate (301-3) passes through the force-bearing block (302-94), and can generate an extrusion force on the force-bearing block (302-94), thereby causing the sealing rubber pad (302-92) to move away from the T-shaped water flow pipe (302-5), and water supply begins; when the arc-shaped extrusion plate (301-3) rotates away from the force-bearing block (302-94), the sealing rubber pad (302-92) is reset and pressed against the inner end of the T-shaped water flow pipe (302-5) under the action of the rebound force of the return spring (302-95), and water supply stops.

10. The method for using the automated concrete mixing and conveying device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: First, cement and fly ash are added into one of the pre-mixing tanks (102) through a feeding pipe (104) in a certain proportion, and sand and stone are added into another pre-mixing tank (102) through a feeding pipe (104) in a certain proportion, and then a mixing motor (103-2) is started, and the mixing motor (103-2) drives a driving gear (103-3) to rotate, and the driving gear (103-3) simultaneously drives a pair of driven gears (103-4) to rotate, and the pair of driven gears (103-4) respectively drive a pair of mixing rods (103-5) to rotate and mix in the two pre-mixing tanks (102), so as to pre-mix the raw materials in the two pre-mixing tanks (102); Step 2: After premixing, the solenoid valve on the discharge pipe at the bottom of the premixing tank (102) is opened to discharge the premixed materials in the two premixing tanks (102) into the double tank conveying premixing box (201), and the drive motor (206-1) is started. When the drive motor (206-1) is running, it drives the second rotating shaft (206-2) to rotate, and the second rotating shaft (206-2) drives the second conical teeth (206-3) and the spiral stirring and conveying blades (206-4) to rotate. When the second conical teeth (206-3) rotate, they also drive a pair of second conical teeth (206-3) meshed with the second conical teeth (206-4). A conical tooth (205) rotates, the first conical tooth (205) drives the first rotating shaft (203) to rotate, and the first rotating shaft (203) drives the spiral conveying blade (204) to rotate. Since the two spiral conveying blades (204) rotate in opposite directions, the premixed materials in the two premixing tanks (102) can be conveyed to the discharge pipe (202), and then the two premixed materials in the two premixing tanks (102) are stirred and premixed again by the spiral stirring and conveying blades (206-4), and finally discharged into the main mixer (400) for more complete stirring and mixing; Step 3: In addition, when the second rotating shaft (206-2) rotates, it also drives the rotating disk (301-1) to rotate. The rotating disk (301-1) drives the arc-shaped extrusion plate (301-3) to rotate through the support rod (301-2). When the arc-shaped extrusion plate (301-3) rotates along the force-bearing block (302-94), it can squeeze the force-bearing block (302-94). The force-bearing block (302-94) drives the movable rod (302-93) to move toward the inside of the water supply transition box (302-3). The reset spring (302-95) is compressed, and the movable rod (302-93) drives the sealing rubber pad (302-92) to separate from the inner end of the T-shaped water flow pipe (302-5) through the blocking plate (302-91). After separation, the water in the water storage tank (302-2) is discharged through the outlet pipe (302- 4) enters the water supply transition box (302-3), and then flows from the water supply transition box (302-3) into the T-shaped water flow pipe (302-5), the ring pipe (302-6) and the drain pipe (302-7), and is sprayed into the discharge pipe (202) by a plurality of nozzles (302-8), and is premixed with the two premixed materials in the two premixing tanks (102) under the action of the spiral stirring and conveying blades (206-4). When the arc-shaped extrusion plate (301-3) rotates out from the force block (302-94), the force block (302-94) is reset under the action of the rebound force of the reset spring (302-95), and at the same time drives the sealing rubber pad (302-92) to reset and press against the inner end of the T-shaped water flow pipe (302-5), and stops the water supply. Such a reciprocating cycle can achieve the effect of interval water supply.

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