Concrete production admixture discharge device

Abstract

The application relates to the field of concrete additive production, and particularly discloses a concrete production admixture discharging device, which comprises a storage barrel, a hopper and a water pump, the bottom of the storage barrel is communicated with the bottom of the hopper through a first pipeline, the tail end of the first pipeline is connected with the water pump, the water pump comprises one water inlet and two water outlets, the two water outlets of the water pump are respectively communicated with a circulating pipeline and a discharging pipeline, the circulating pipeline is communicated with the top of the storage barrel, a flushing pipe communicated with the circulating pipeline is arranged on the circulating pipeline, the end of the flushing pipe extends to the upper side of the hopper, a first valve is arranged between the storage barrel and the first pipeline, a second valve is arranged between the hopper and the first pipeline, a third valve is arranged between the circulating pipeline and the water pump, and a fourth valve is arranged between the discharging pipeline and the water pump. The scheme can solve the problems that the powdery concrete admixture cannot completely fall and mix with water during compounding and is prone to be agglomerated.

Description

Technical Field

[0001] This invention relates to the field of concrete additive production, and more specifically to a discharge device for admixtures used in concrete production. Background Technology

[0002] Concrete admixtures, or admixtures for short, are substances added to concrete before or during mixing to improve its performance. A mixing tank is needed to prepare admixtures. The concrete mixing tank is mainly used for preparing and adding concrete admixtures to improve concrete performance and quality, meeting the requirements of different engineering projects. Through the mixing tank, various chemical admixtures can be prepared in specific proportions and then added to the concrete production process.

[0003] Existing compounding tanks, such as the Chinese Utility Model Application No. 2018209526302, disclose a concrete admixture compounding tank, including a cylindrical mixing tank and a compounding pipe. The two ends of the compounding pipe are connected to the top and bottom of the mixing tank, respectively, forming an annular reflux channel. Near the bottom of the mixing tank, the compounding pipe is provided with a butterfly valve A, a hopper, a butterfly valve C, a shock absorber, a circulation pump, a discharge pipe, and a butterfly valve D in sequence. The butterfly valve A, hopper, butterfly valve C, shock absorber, circulation pump, and butterfly valve D are all installed on the compounding pipe through flanges. A butterfly valve B is provided between the hopper and the compounding pipe, and a ball valve is provided at the discharge pipe. The tank also includes a support frame and a mixing shaft. A motor is provided on the support frame, and the motor drives the mixing shaft to rotate, so that the mixing head of the mixing shaft extends into the mixing tank. A fixed shaft is also provided horizontally on the mixing shaft. The two ends of the fixed shaft are movably connected to cleaning brush heads, so that the cleaning brush heads are close to the inner wall of the mixing tank when vertical. Additives are stored in the hopper, and the circulation pump is started to mix the additives in the hopper with the water in the mixing tank, and then discharged from the discharge pipe. When cleaning the mixing tank, clean water is injected into the tank so that the cleaning brush head is close to the inner wall of the mixing tank. The motor is turned on, and the stirring shaft rotates under the drive of the motor, which drives the cleaning brush head to rotate and scrub the inner wall of the mixing tank. At the same time, the stirring head of the stirring shaft also rotates, stirring the clean water in the mixing tank in conjunction with the cleaning brush head to thoroughly clean the inner wall of the tank.

[0004] The drawback of the above scheme is that the admixture is stored in the hopper before entering the mixing tank. When the admixture begins to enter the mixing tank, it falls into the mixing pipe under the action of gravity. Finally, under the action of the circulating pump, it mixes with the water in the mixing tank. When the admixture is in powder form, it is easy to form an arch in the hopper after falling for a period of time, and it cannot fall continuously. Therefore, manual assistance is required from the staff to assist in feeding, which makes the entire preparation process not fully automated. In addition, when the admixture is in powder form, the powder and water are prone to forming clumps, which affects the preparation accuracy of the admixture. Summary of the Invention

[0005] The present invention provides a discharge device for concrete admixtures to solve the problem that powdered concrete admixtures cannot completely fall and mix with water during compounding and are prone to clumping.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a discharge device for concrete admixtures, comprising a storage tank, a hopper, and a water pump. The bottom of the storage tank and the bottom of the hopper are connected by a first pipe. The end of the first pipe is connected to the water pump. The water pump includes one inlet and two outlets. The two outlets of the water pump are respectively connected to a circulation pipe and a discharge pipe. The circulation pipe is connected to the top of the storage tank. A flushing pipe is provided on the circulation pipe, and the end of the flushing pipe extends to the top of the hopper. A first valve is provided between the storage tank and the first pipe. A second valve is provided between the hopper and the first pipe. A third valve is provided between the circulation pipe and the water pump. A fourth valve is provided between the discharge pipe and the water pump.

[0007] The basic principle of this scheme is as follows: fill the storage tank to the rated water level, close the second and fourth valves, pour the powder into the hopper, turn on the water pump, and the water pump draws the water from the storage tank into the first pipe. Open the second valve, and the powder falls freely into the hopper. After the powder mixes with the water in the first pipe, it returns to the storage tank along the circulation pipe. At the same time, some water flows into the flushing pipe, flows out along the flushing pipe, and washes the inner wall of the hopper, completely flushing the powder remaining on the hopper into the first pipe. Under the operation of the water pump, the water flows continuously in the storage tank and the circulation pipe, so that the powdered additive is mixed evenly in the water.

[0008] The beneficial effects of this solution are as follows: When the existing admixture is in powder form, it tends to form an arch in the hopper after falling for a period of time, preventing it from falling continuously. This solution connects the flushing pipe to the circulation pipe, allowing the water in the flushing pipe to reliably flow back into the hopper by gravity, thereby completely flushing the powder in the hopper into the pipe and ensuring the accuracy of the admixture compounding.

[0009] Furthermore, the circulation pipe includes a vertical centrifugal section located at the junction of the flushing pipe and the circulation pipe. The inner wall of the centrifugal section is equipped with spiral blades along its height, and the end of the flushing pipe extends to the central axis of the centrifugal section. Within the centrifugal section, the water flow is guided by the spiral blades to form a vortex. Large, agglomerated powder particles are pushed against the inner wall of the centrifugal section by the centrifugal force of the vortex, creating a clear water zone in the center of the vortex. The flushing pipe then guides the water from this clear zone back into the hopper, thus flushing the powder within the hopper.

[0010] Furthermore, the hopper can rotate along its vertical central axis. The end of the flushing pipe closest to the hopper is located above the inner wall of the hopper. Water can flow through the flushing pipe and wash the inner wall of the hopper. Several water guide plates are arranged circumferentially on the inner wall of the hopper, and the water guide plates are arranged in a turbine blade shape. When the flushing pipe leads the water flow back to the hopper, the water flow washes the water guide plates and pushes the entire hopper to rotate along the vertical central axis. The water flow washes the inner wall of the hopper evenly, and the powder on the inner wall of the hopper falls into the pipe more quickly, improving the compounding efficiency.

[0011] Furthermore, a sliding screen is horizontally installed on the inner wall of the storage tank. The screen moves up and down with the water flow, and under the pumping action of the water pump, the agglomerated particles are dispersed into fine particles through the screen, while the agitation of the water flow ensures that the additive is evenly mixed.

[0012] Furthermore, the first valve, second valve, third valve, and fourth valve are all electrically connected to the controller of the external device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of an embodiment of the present invention. Detailed Implementation

[0014] The following detailed description illustrates the specific implementation method:

[0015] The reference numerals in the accompanying drawings include: storage tank 1, hopper 2, water pump 3, first valve 11, second valve 12, third valve 13, fourth valve 14, first pipe 41, circulation pipe 42, flushing pipe 43, centrifugal section 44, discharge pipe 45, water inlet plate 21, and screen 101.

[0016] The basic implementation examples are as follows: Figure 1 As shown:

[0017] A concrete production admixture discharge device includes a storage tank 1, a hopper 2, and a water pump 3. The storage tank 1 is placed horizontally on the ground and contains clean water. The bottom of the storage tank 1 is connected to the vertical hopper 2 through a first pipe 41. A first valve 11 is installed on the first pipe 41 to control the opening and closing of the first pipe 41.

[0018] In this embodiment, the hopper 2 is funnel-shaped, and workers can pour powdered admixtures into the hopper 2. A second valve 12 is installed at the lower end of the hopper 2, and the second valve 12 controls whether the concrete admixture in the hopper 2 enters the first pipe 41.

[0019] A water pump 3 is connected to the end of the first pipe 41. In this embodiment, the water pump 3 includes one inlet and two outlets. The first pipe 41 is connected to the inlet of the water pump 3, and the outlets of the water pump 3 are connected to the circulation pipe 42 and the discharge pipe 45, respectively. A third valve 13 is installed on the circulation pipe 42, and a fourth valve 14 is installed on the discharge pipe 45. The first valve 11, the second valve 12, the third valve 13, and the fourth valve 14 are all electrically connected to an external controller.

[0020] A centrifugal section 44 is provided at one end of the circulation pipe 42 near the water pump 3. The centrifugal section 44 is located inside the vertical circulation pipe 42. Spiral blades are welded on the inner wall of the centrifugal section 44 from bottom to top along the height of the pipe. In this embodiment, the inner diameter of the spiral blades is half the inner diameter of the circulation pipe 42, and the diameter of the circulation pipe 42 is 10cm.

[0021] A flushing pipe 43 is provided beside the circulation pipe 42, passing through the centrifugal section 44. One end of the flushing pipe 43 extends to the central axis of the centrifugal section 44, and the other end extends above the hopper 2. The water flowing down the flushing pipe 43 can wash the side wall of the hopper 2. In this embodiment, the diameter of the flushing pipe 43 is 2 cm.

[0022] When the water is pumped into the circulation pipe 42 by the water pump 3, the spiral blades of the centrifugal section 44 guide the water flow into a vortex state. The vortex causes the large particles to move and concentrate towards the side wall. The middle part of the vortex is a clear water flow area. The clear water flow in the middle flows into the hopper 2 by gravity.

[0023] In this embodiment, the hopper 2 is vertically rotatably connected to the first pipe 41 via a bearing. Several water guide plates 21 are spaced circumferentially on the inner wall of the hopper 2. The water guide plates 21 are arranged in the shape of turbine blades. When the water flow from the flushing pipe 43 flows downward to the inner wall of the hopper 2, the curved airfoil blades of the water guide plates 21 are pushed by the water flow to drive the entire hopper 2 to rotate along the central axis, so that the additive powder on the inner wall of the hopper 2 is flushed by the water flow and enters the first pipe 41 through the second valve 12.

[0024] A horizontal sieve 101 is slidably connected to the inner wall of the storage tank 1. The surface of the sieve 101 includes several fine holes. As the horizontal plane inside the storage tank 1 rises and falls, the sieve 101 slides up and down inside the storage tank 1, and the holes on the surface agitate and disperse the powder clumps.

[0025] The specific implementation process is as follows:

[0026] When feeding the additive, add water to the storage tank 1 to the rated water level, close the second valve 12, and the worker feeds the weighed powdered additive into the hopper 2. After feeding is completed, close the fourth valve 14 on the discharge pipe 45, open the first valve 11, the second valve 12, and the third valve 13, and start the water pump 3. The water pump 3 pumps the water in the storage tank 1 into the first pipe 41. At the same time, the powder in the hopper 2 automatically falls into the first pipe 41 and mixes with the water. The water pump 3 pumps the mixed liquid into the circulation pipe 42. When passing through the centrifugal section 44, the water flow forms a vortex under the action of the spiral blades, so that the agglomerated powder is centrifuged and moves towards the side wall of the centrifugal section 44. A relatively clear water flow area is formed in the middle of the vortex. The clear water flows into the flushing pipe 43 and washes the inner wall of the hopper 2, driving the hopper 2 to rotate along its central axis, so that the water flow can wash the entire inner wall of the hopper 2 and completely flush the powder into the first pipe 41.

[0027] After most of the clumped powder enters the storage tank 1 along the circulation pipe 42, the water level in the storage tank 1 fluctuates up and down with the delivery of the water pump 3, causing the screen 101 to slide up and down. When the water pump 3 draws water into the first pipe 41, the clumped powder is dispersed through the holes on the screen 101. At the same time, the water flow is disturbed by the screen 101, which makes the powdered additives and water mix more evenly.

[0028] After the admixture is compounded, it is necessary to discharge the admixture from the discharge pipe 45, close the second valve 12 and the third valve 13, open the first valve 11 and the fourth valve 14, start the water pump 3, and draw the admixture in the storage tank 1 from the first pipe 41 to the discharge pipe 45.

[0029] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A discharge device for admixtures used in concrete production, characterized in that: The system includes a storage tank, a hopper, and a water pump. The bottom of the storage tank and the bottom of the hopper are connected by a first pipe. The end of the first pipe is connected to the water pump. The water pump includes one inlet and two outlets. The two outlets of the water pump are respectively connected to a circulation pipe and a discharge pipe. The circulation pipe is connected to the top of the storage tank. A flushing pipe is provided on the circulation pipe, and the end of the flushing pipe extends to the top of the hopper. A first valve is provided between the storage tank and the first pipe, and a second valve is provided between the hopper and the first pipe. The circulation pipe and the water pump... A third valve is provided between the discharge pipe and the water pump, and a fourth valve is provided between the discharge pipe and the water pump. The circulation pipe includes a vertical centrifugal section located at the junction of the flushing pipe and the circulation pipe. Spiral blades are provided along the height of the inner wall of the centrifugal section. The end of the flushing pipe extends to the central axis of the centrifugal section. The hopper can rotate along its vertical central axis. The end of the flushing pipe near the hopper is located above the inner wall of the hopper. Water can flow through the flushing pipe to flush the inner wall of the hopper. Several water guide plates are provided circumferentially on the inner wall of the hopper, and the water guide plates are arranged in the shape of turbine blades.

2. The concrete admixture discharge device according to claim 1, characterized in that: The storage tank has a horizontally movable screen on its inner wall.

3. The concrete admixture discharge device according to claim 2, characterized in that: The first valve, the second valve, the third valve, and the fourth valve are all electrically connected to an external controller.

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