Stirring tank for preparing liquid concrete admixture

Abstract

The invention relates to the technical field of concrete admixture preparation, and particularly discloses a liquid concrete admixture preparation stirring tank which comprises an air blowing part, a conveying channel and a feeding piece, the feeding piece can convey powder into the conveying channel, the air blowing part can blow the powder in the conveying channel into a tank body, and bubbles are generated; the dispersing mechanism comprises a material distributing channel and a shielding part, the material distributing channel can move along a circular track, the top of the material distributing channel is in contact with the inner top wall of the shielding part, a plurality of material discharging holes are formed in the top of the material distributing channel, and a plurality of groups of through holes are formed in the top of the shielding part; according to the stirring tank for preparing the liquid concrete admixture, powder is blown into water in the tank body through the air blowing part, bubbles are generated, the powder moves along a circular track through the material distributing channel, the powder is sequentially discharged from the multiple through holes in the same group, and the conveying position of the powder gradually moves from the middle of the inner bottom wall of the tank body to the inner side wall; therefore, powder is prevented from escaping to the outside.

Description

Technical Field

[0001] The invention relates to the technical field of concrete admixture preparation, and in particular to a mixing tank for preparing a liquid concrete admixture. Background Art

[0002] Liquid concrete admixture refers to a substance added during the concrete mixing process to improve the performance of concrete. Its main purpose is to improve the performance of hardened concrete, save cement, save energy, speed up construction progress, etc. The characteristics of concrete admixtures are that there are many varieties and small dosages, and they have a great impact on the performance of concrete. They have the characteristics of low investment, quick results, and significant technical and economic benefits. Moreover, admixtures have a certain improvement effect on the carbonation resistance of concrete. There is a certain linear relationship between the carbonation depth and porosity of concrete. During the preparation process of liquid concrete admixtures, the bagged powder is poured into the mixing tank manually, and the water in the mixing tank is stirred at the same time, so that the powder and water are mixed in the mixing tank, and the discharge is liquid.

[0003] A Chinese patent document with announcement number CN213791141U discloses a mother liquor preparation device for concrete admixtures, which comprises at least a solid box, a liquid box, a mixing box and a filter box. A first stirring shaft is provided in the solid box, a second stirring shaft is provided in the liquid box, a third stirring shaft is provided in the mixing box, left and right side walls of the filter box are provided with trapezoidal side fixing blocks, and a trapezoidal bottom fixing block is provided at the bottom of the filter box, the lower ends of the left and right side fixing blocks and the left and right ends of the bottom fixing block form two downwardly inclined discharge channels, the upper ends of the left and right side fixing blocks are provided with a horizontal first filter screen, and the discharge channel is provided with a second filter screen. Through double-layer filtration, solid impurities in the mother liquor production can be removed, and the filter screen can also be cleaned to ensure continuous use.

[0004] However, the above patent document still has the following shortcomings: when pouring the bagged powder into the mixing tank, the water in the mixing tank is in a stirred state, which is easy to generate airflow, thereby causing the powder to escape to the outside, which not only easily causes waste of powder, but also easily causes pollution to the surrounding environment. Summary of the invention

[0005] The invention provides a mixing tank for preparing a liquid concrete admixture, aiming to solve the problem in the related art that when pouring bagged powder into the mixing tank, water in the mixing tank is in a stirred state, airflow is easily generated, and thus the powder escapes to the outside.

[0006] The mixing tank for preparing liquid concrete admixture of the present invention comprises a tank body and a mixing mechanism, wherein water is contained in the tank body, and further comprises an air blowing portion, a conveying channel and a feeding piece, wherein one end of the conveying channel is connected to the bottom of the tank body and extends into the tank body, and the other end of the conveying channel is connected to the air blowing portion, and the feeding piece is connected to the conveying channel, and the feeding piece can convey powder into the conveying channel, and the air blowing portion can blow the powder in the conveying channel into the tank body and generate bubbles; a dispersing mechanism is connected to the tank body and is used to disperse the powder entering the tank body, and the dispersing mechanism comprises a distributing channel and a shielding portion, and the distributing channel is rotatably connected to the conveying channel. At one end of the conveying channel extending into the tank body, the distribution channel can move along a circular trajectory, the shielding part is connected in the tank body, the top of the distribution channel contacts the inner top wall of the shielding part, and a plurality of discharge holes are arranged on the top of the distribution channel. The top of the shielding part is provided with a plurality of through holes, and the number of through holes in each group is the same as the number of discharge holes. The multiple through holes in the same group are arranged obliquely, so that when the distribution channel moves along the circular trajectory, only one discharge hole on its top can be connected with one of the through holes, and the remaining discharge holes are blocked by the inner top wall of the shielding part, and the distance between the multiple through holes in the same group and the axis of the shielding part gradually increases.

[0007] Beneficial effect: The powder is blown into the water in the tank body by the blowing part and bubbles are generated. At the same time, the material distribution channel moves along a circular trajectory. Under the cover of the shielding part, the powder is discharged from multiple through holes in the same group in sequence, so that the powder delivery position moves from the middle of the inner bottom wall of the tank body to the inner side wall in sequence to prevent the powder from escaping to the outside.

[0008] Preferably, the feeding member includes a feeding pipe, a mounting portion, a connecting pipe and a feeding tray, wherein the feeding pipe, the mounting portion and the connecting pipe are connected in sequence from top to bottom, the bottom of the connecting pipe is connected to the conveying channel, the feeding tray is rotatably connected in the mounting portion, and four material containing cavities are arranged on the outside of the feeding tray. The effect is that the wind force blown out by the blowing portion is prevented from blowing the powder out of the feeding member to the outside through the feeding tray and the material containing cavities on the outside thereof.

[0009] Preferably, a plugging member is provided in the through hole, the plugging member comprises a connecting portion, an elastic portion and a plugging portion, the elastic portion is connected to the through hole through the connecting portion, the plugging portion is connected to the elastic portion, and the plugging portion is inserted into the through hole. The effect is that the plugging member can prevent water from passing through the through hole and the discharge hole into the material distribution channel.

[0010] Preferably, the stirring mechanism includes a stirring shaft, stirring blades and a pushing part, the bottom end of the stirring shaft extends into the tank body, the stirring blades are connected to the outside of the stirring shaft, the pushing part is connected to the lower end of the outside of the stirring shaft, and the stirring shaft can rotate.

[0011] Preferably, the end of the conveying channel extending into the tank body is rotatably connected to a rotating part, the material distribution channel is connected to the rotating part, the top of the rotating part is connected to a connecting rod, the top of the connecting rod passes through the shielding part and is provided with a slot, and the pushing part is inserted into the slot. The effect is that when the stirring shaft rotates, the connecting rod can be driven to rotate, so that the connecting rod can drive the rotating part to rotate, thereby providing power for the rotation of the rotating part.

[0012] Preferably, the feed pipe, the mounting portion and the connecting pipe are an integrally formed structure, which has the effect of enhancing the connection strength between the feed pipe, the mounting portion and the connecting pipe.

[0013] Preferably, the tank body is provided with a water inlet pipe, which can be connected to an external water supply device, and the external water supply device transports water into the tank body through the water inlet pipe.

[0014] Preferably, a discharge pipe is connected to the lower end of the outer side of the tank body, and a control valve is installed on the discharge pipe. The discharge pipe can discharge the prepared liquid concrete admixture, and the control valve is used to control the opening and closing of the discharge pipe.

[0015] The beneficial effects of the present invention are: 1. After the powder is transported to the conveying channel by the feeding part, the blowing part blows the powder into the water in the tank to generate bubbles, and the stirring mechanism mixes the water and powder to prevent the powder from escaping to the outside.

[0016] 2. The material distribution channel moves along a circular trajectory and, under the cover of the shielding portion, discharges the powder from multiple through holes in the same group in sequence, so that the conveying position of the powder moves from the middle of the inner bottom wall of the tank body to the inner side wall in sequence, thereby evenly conveying the powder to the water in the tank body to improve the mixing efficiency of water and powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 It is a cross-sectional three-dimensional structural schematic diagram of the present invention.

[0019] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the feeding piece of the present invention.

[0020] Figure 4 It is a schematic diagram of the main cross-sectional structure of the feeding piece of the present invention.

[0021] Figure 5 It is a cross-sectional three-dimensional structural schematic diagram of the dispersion mechanism of the present invention.

[0022] Figure 6 It is a three-dimensional structural schematic diagram of the dispersion mechanism of the present invention.

[0023] Figure 7 It is a partial cross-sectional three-dimensional structural schematic diagram of the dispersion mechanism of the present invention.

[0024] Reference numerals: 1. Tank body; 2. Stirring mechanism; 21. Driving source 1; 22. Stirring shaft; 23. Stirring blade; 24. Pushing part; 3. Pneumatic feeding mechanism; 31. Blowing part; 32. Conveying channel; 33. Feeding piece; 331. Feeding pipe; 332. Mounting part; 333. Connecting pipe; 334. Feeding tray; 3341. Material holding cavity; 335. Driving source 2; 4. Dispersing mechanism; 41. Rotating part; 42. Distributing channel; 43. Discharging hole; 44. Shielding part; 45. Through hole; 46. Blocking piece; 461. Connecting part; 462. Elastic part; 463. Blocking part; 47. Connecting rod; 48. Slot. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0026] like Figures 1 to 7 As shown, the mixing tank for preparing a liquid concrete admixture of the present invention comprises a tank body 1, a mixing mechanism 2, a pneumatic feeding mechanism 3 and a dispersing mechanism 4. A water inlet pipe is provided on the tank body 1, and an external water supply device can be connected to the water inlet pipe to transport water into the tank body 1. The mixing mechanism 2 is connected to the tank body 1 and is used to mix the water in the tank body 1. The pneumatic feeding mechanism 3 is connected to the tank body 1 and is used to blow powder into the water in the tank body 1 and generate bubbles. The dispersing mechanism 4 is connected to the pneumatic feeding mechanism 3 and is used to disperse the powder entering the water, thereby improving the mixing efficiency of the powder and water.

[0027] like Figure 1 and Figure 2 As shown, a discharge pipe is connected to the lower end of the outer side of the tank body 1, and a control valve is installed on the discharge pipe. The discharge pipe can discharge the prepared liquid concrete admixture, and the control valve is used to control the opening and closing of the discharge pipe. The stirring mechanism 2 includes a driving source 21, a stirring shaft 22, stirring blades 23 and a pushing portion 24. The driving source 21 is connected to the top of the tank body 1, and the driving source 21 is a motor. The stirring shaft 22 is connected to the output shaft of the driving source 21, and the bottom end of the stirring shaft 22 extends into the tank body 1. The stirring shaft 22 is coaxially arranged with the tank body 1. The stirring blades 23 are connected to the outer side of the stirring shaft 22 for stirring the water and powder in the tank body 1. The pushing portion 24 is connected to the lower end of the outer side of the stirring shaft 22. When the stirring shaft 22 rotates, the dispersing mechanism 4 can be driven to operate through the pushing portion 24.

[0028] The driving source 21 is started to drive the stirring shaft 22 to rotate, and the stirring shaft 22 drives the stirring blades 23 to stir the water in the tank body 1. At this time, the pneumatic feeding mechanism 3 conveys the powder into the water in the tank body 1 and generates bubbles, so that the water and the powder are mixed to form a liquid concrete admixture. At the same time, when the powder enters the water and generates bubbles, it is dispersed by the dispersion mechanism 4 to improve the mixing efficiency of the water and the powder.

[0029] like Figures 1 to 4 As shown, the pneumatic feeding mechanism 3 includes a blowing part 31, a conveying channel 32 and a feeding piece 33. One end of the conveying channel 32 is connected to the bottom of the tank body 1 and extends into the tank body 1. The other end of the conveying channel 32 is connected to the blowing part 31. The blowing part 31 is a blower, and a filter is installed on the blowing part 31 for filtering the air entering the conveying channel 32. The feeding piece 33 is connected to the conveying channel 32 for conveying powder into the conveying channel 32.

[0030] Continue to refer Figures 1 to 4 As shown, the feeding member 33 includes a feeding pipe 331, a mounting portion 332, a connecting pipe 333, a feeding tray 334 and a second driving source 335. The feeding pipe 331, the mounting portion 332 and the connecting pipe 333 are connected in sequence from top to bottom. The feeding pipe 331, the mounting portion 332 and the connecting pipe 333 are an integrated structure. The bottom of the connecting pipe 333 is connected to the conveying channel 32. The feeding tray 334 is rotatably connected in the mounting portion 332. Four material containing cavities 3341 are arranged on the outer side of the feeding tray 334 for containing powder and preventing the wind force blown out by the blowing portion 31 from blowing the powder out of the feeding member 33 to the outside. The second driving source 335 is connected to the mounting portion 332. The second driving source 335 is a motor. The output end of the second driving source 335 is connected to the feeding tray 334 for driving the feeding tray 334 to rotate, thereby pouring the powder in the material containing cavity 3341 into the conveying channel 32.

[0031] Start the second driving source 335 to drive the feeding tray 334 to rotate, pour the powder into the feeding pipe 331, so that the powder enters the four containing chambers 3341 on the feeding tray 334 in turn, after the containing chamber 3341 rotates to the connecting pipe 333, the powder falls into the conveying channel 32 through the connecting pipe 333, start the blowing part 31, and blow the powder to the inner bottom of the tank body 1 through the blowing part 31, so that the powder enters the water and generates bubbles.

[0032] like Figure 2 , Figures 5 to 7As shown, the dispersing mechanism 4 includes a rotating part 41, a distributing channel 42, a shielding part 44, a blocking member 46, a connecting rod 47 and a slot 48. The rotating part 41 and the shielding part 44 are both coaxially arranged with the stirring shaft 22. The rotating part 41 is rotatably connected to one end of the conveying channel 32 extending into the tank body 1. The rotating part 41 is communicated with the conveying channel 32. Two distributing channels 42 are provided. The two distributing channels 42 are both connected to the rotating part 41. The rotating part 41 can drive the two distributing channels 42 to move along a circular trajectory. A plurality of discharge holes 43 are provided at the top of the distributing channel 42 for discharging powder into the water. The shielding part 44 is connected to the inner bottom wall of the tank body 1. The rotating part 41 and the two distributing channels 42 are both located in the shielding part 44, and the top of the distributing channel 42 is in contact with the inner top wall of the shielding part 44. A plurality of through holes 45 are provided at the top of the shielding part 44.

[0033] The number of through holes 45 in each group is the same as the number of discharge holes 43 at the top of the distribution channel 42. The multiple through holes 45 in the same group are respectively located on the movement trajectory of the multiple discharge holes 43 on the same distribution channel 42. The distance between the multiple through holes 45 in the same group and the axis of the shielding portion 44 gradually increases. The multiple through holes 45 in the same group are arranged obliquely, so that when the distribution channel 42 moves along a circular trajectory, only one discharge hole 43 at its top can be connected to one of the through holes 45, and the remaining discharge holes 43 are blocked by the inner top wall of the shielding portion 44, so that the multiple discharge holes 43 at the top of the distribution channel 42 are connected to the multiple through holes 45 in the same group in turn, and then the conveying position of the powder is gradually moved from the middle of the inner bottom wall of the tank body 1 to the inner side wall, so that the powder is evenly conveyed to the water in the tank body 1, thereby improving the mixing efficiency between water and powder.

[0034] Continue to refer Figure 2 , Figures 5 to 7 As shown, the blocking member 46 is connected in the through hole 45 and is used for blocking the through hole 45. The blocking member 46 includes a connecting portion 461, an elastic portion 462 and a blocking portion 463. The elastic portion 462 is connected in the through hole 45 through the connecting portion 461. The elastic portion 462 is a telescopic rod with a built-in spring. The blocking portion 463 is connected to the telescopic end of the elastic portion 462. The blocking portion 463 is inserted in the through hole 45 to block the through hole 45 to prevent water from passing through the through hole 45 and the discharge hole 43 into the distribution channel 42. The bottom end of the connecting rod 47 passes through the top of the shielding portion 44 and is connected to the top of the rotating portion 41. A slot 48 is provided at the top of the connecting rod 47. The pushing portion 24 is inserted in the slot 48, so that when the stirring shaft 22 rotates, it can drive the connecting rod 47 to rotate, and the connecting rod 47 drives the rotating portion 41 and the distribution channel 42 to rotate.

[0035] When the stirring shaft 22 rotates, the connecting rod 47 is driven to rotate through the pushing part 24. When the connecting rod 47 rotates, the rotating part 41 and the distribution channel 42 are driven to rotate. When the distribution channel 42 rotates, the multiple discharge holes 43 at the top of the distribution channel 42 are connected with the multiple through holes 45 of the same group in sequence. At this time, the powder passes through the discharge hole 43 under the conveyance of wind force, and blows the blocking part 463 to make the blocking part 463 in the corresponding through hole 45 detach from the through hole 45, so that the powder is transported from the through hole 45 to the water, and bubbles are generated. The multiple discharge holes 43 at the top of the distribution channel 42 are connected with the multiple through holes 45 of the same group in sequence, so that the conveying position of the powder is gradually moved from the middle of the inner bottom wall of the tank body 1 to the inner side wall, so that the powder is evenly transported to the water in the tank body 1.

[0036] Working principle: Water is transported into the tank body 1 through the water inlet pipe on the tank body 1, and the driving source 21 is started to drive the stirring shaft 22 to rotate, and the stirring blade 23 is driven by the stirring shaft 22 to stir the water in the tank body 1.

[0037] Start the second driving source 335 to drive the feeding tray 334 to rotate, pour the powder into the feeding pipe 331, so that the powder enters the four containing chambers 3341 on the feeding tray 334 in turn, after the containing chamber 3341 rotates to the connecting pipe 333, the powder falls into the conveying channel 32 through the connecting pipe 333, and the blowing part 31 is started to blow the powder into the rotating part 41 through the blowing part 31 and enter the distributing channel 42.

[0038] When the stirring shaft 22 rotates, the connecting rod 47 is driven to rotate through the pushing part 24. When the connecting rod 47 rotates, the rotating part 41 and the distribution channel 42 are driven to rotate. When the distribution channel 42 rotates, the multiple discharge holes 43 at the top of the distribution channel 42 are connected with the multiple through holes 45 of the same group in sequence. At this time, the powder passes through the discharge hole 43 under the conveyance of wind force, and blows the blocking part 463 to make the blocking part 463 in the corresponding through hole 45 detach from the through hole 45, so that the powder is transported from the through hole 45 to the water, and bubbles are generated. The multiple discharge holes 43 at the top of the distribution channel 42 are connected with the multiple through holes 45 of the same group in sequence, so that the conveying position of the powder is gradually moved from the middle of the inner bottom wall of the tank body 1 to the inner side wall, so that the powder is evenly transported to the water in the tank body 1, and the stirring mechanism 2 stirs the powder and water to prepare a liquid concrete admixture.

[0039] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A mixing tank for preparing a liquid concrete admixture, comprising a tank body and a mixing mechanism, wherein the tank body is filled with water, and characterized in that: It also includes a blowing part, a conveying channel and a feeding piece, one end of the conveying channel is connected to the bottom of the tank body and extends into the tank body, the other end of the conveying channel is connected to the blowing part, the feeding piece is connected to the conveying channel, the feeding piece can convey the powder into the conveying channel, and the blowing part can blow the powder in the conveying channel into the tank body and generate bubbles; A dispersing mechanism is connected in the tank body and is used for dispersing the powder entering the tank body. The dispersing mechanism includes a distributing channel and a shielding part. The distributing channel is rotatably connected to one end of the conveying channel extending into the tank body. The distributing channel can move along a circular trajectory. The shielding part is connected in the tank body. The top of the distributing channel contacts the inner top wall of the shielding part. A plurality of discharge holes are arranged at the top of the distributing channel. A plurality of groups of through holes are arranged at the top of the shielding part. The number of through holes in each group is the same as the number of discharge holes. The plurality of through holes in the same group are arranged obliquely so that when the distributing channel moves along the circular trajectory, only one discharge hole at its top can be connected to one of the through holes, and the other discharge holes are blocked by the inner top wall of the shielding part. The distance between the plurality of through holes in the same group and the axis of the shielding part gradually increases.

2. The mixing tank for preparing liquid concrete admixture according to claim 1, characterized in that: The feeding piece includes a feeding pipe, a mounting portion, a connecting pipe and a feeding tray. The feeding pipe, the mounting portion and the connecting pipe are connected in sequence from top to bottom. The bottom of the connecting pipe is connected to the conveying channel. The feeding tray is rotatably connected in the mounting portion. Four material containing cavities are arranged on the outside of the feeding tray.

3. The mixing tank for preparing liquid concrete admixture according to claim 1, characterized in that: A blocking piece is arranged in the through hole, and the blocking piece comprises a connecting part, an elastic part and a blocking part. The elastic part is connected to the through hole through the connecting part, the blocking part is connected to the elastic part, and the blocking part is inserted in the through hole.

4. The mixing tank for preparing liquid concrete admixture according to claim 1, characterized in that: The stirring mechanism comprises a stirring shaft, stirring blades and a driving part. The bottom end of the stirring shaft extends into the tank body, the stirring blades are connected to the outside of the stirring shaft, the driving part is connected to the lower end of the outside of the stirring shaft, and the stirring shaft can rotate.

5. The mixing tank for preparing liquid concrete admixture according to claim 4, characterized in that: One end of the conveying channel extending into the tank body is rotatably connected to a rotating part, the material distribution channel is connected to the rotating part, the top of the rotating part is connected to a connecting rod, the top of the connecting rod passes through the shielding part and is provided with a slot, and the pushing part is inserted into the slot.

6. The mixing tank for preparing liquid concrete admixture according to claim 2, characterized in that: The feed pipe, the mounting portion and the connecting pipe are an integrally formed structure.

7. The mixing tank for preparing liquid concrete admixture according to claim 1, characterized in that: The tank body is provided with a water inlet pipe, which can be connected to an external water supply device, and the external water supply device transports water into the tank body through the water inlet pipe.

8. The mixing tank for preparing a liquid concrete admixture according to any one of claims 1 to 7, characterized in that: The lower end of the outer side of the tank body is connected with a discharge pipe, on which a control valve is installed. The discharge pipe can discharge the prepared liquid concrete admixture, and the control valve is used to control the opening and closing of the discharge pipe.

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