Premixed flour mixer

Abstract

The utility model relates to a premixed flour mixing machine, belongs to the technical field of mixing, and in particular relates to a premixed flour mixing machine which comprises a mixing machine tank body, a top cover, an annularly distributed feeding pipe, supporting legs and a discharging pipe. According to the innovation points, a flow dividing table and an adsorption cavity are arranged at the bottom of the top cover, a linkage rod is driven by a driving motor to rotate, a guide turbine blade on the linkage rod forms vertically downward airflow in the adsorption cavity, and powder fed by a feeding pipe is forcibly sucked into a mixing area; the stirring component is detachably connected with the linkage rod through a flange plate and synchronously rotates to generate a horizontal vortex so as to form a three-dimensional mixing field. According to the utility model, the synchronous operation of feeding and stirring is realized, powder spirally falls down along the inclined surface of the shunting table, the center accumulation is avoided, and the mixing efficiency is improved; the vertical airflow effectively restrains flying dust from overflowing, and the working environment is improved; the modular structure makes maintenance convenient, and solves the problems of low feeding efficiency, non-uniform mixing, flying dust pollution and difficult maintenance of traditional equipment.

Description

Technical Field

[0001] This utility model relates to the field of mixing technology, and in particular to a premixed powder mixer. Background Technology

[0002] Premixed powder mixers are key equipment in industries such as food and building materials, used to uniformly mix various powdered raw materials. In existing technology, common mixers typically adopt a split design, that is, the feeding system and the mixing system operate independently.

[0003] For example, a search of Chinese patent publication number CN222056981U reveals a dry powder mixer that feeds materials through a top inlet, closes the hatch, and then starts the bottom stirring shaft for mixing.

[0004] Based on the above search results and existing technologies, the following findings were made:

[0005] Existing mixers generally suffer from a problem of sequential separation between feeding and mixing operations. Specifically, during operation, all raw materials must be statically fed in first, and mixing can only begin after the feed inlet is completely closed. This staged operation mode leads to two core defects:

[0006] Low mixing efficiency: The mixing mechanism is stopped during the feeding stage, and the material flow during the feeding process cannot be used for premixing, which significantly prolongs the overall operation cycle;

[0007] Insufficient dust control: During static feeding, the airflow disturbance generated by the free fall of powder cannot be effectively suppressed, resulting in dust escape, causing environmental pollution and waste of raw materials.

[0008] The root cause of the above problems lies in the fact that traditional equipment fails to achieve dynamic coordination between feeding and mixing. Especially when processing powders that are prone to adsorption and agglomeration, statically accumulated raw materials can easily form mixing blind zones in the initial stage of mixing, seriously affecting the quality of the final product. The innovative solution of this technology is precisely aimed at addressing this core problem. Utility Model Content

[0009] To address the aforementioned technical problems, this invention proposes a premixed powder mixer. Through the axial linkage design of the drive motor, linkage rod, and guide turbine blades, a vertically downward active suction airflow is formed within the adsorption chamber. This structure forces the powder fed into the feed pipe into the mixing area, while the stirring blades rotate synchronously with the linkage rod, generating horizontal vortices and forming a three-dimensional mixing field. Compared to the passive feeding method of traditional equipment, this achieves synchronous feeding and mixing operations, significantly improving efficiency, and the vertical airflow effectively suppresses dust overflow.

[0010] The technical solution to achieve the purpose of this utility model is as follows: a premixed powder mixer, including a mixer tank, a matching top cover is provided on the top of the mixer tank, a feed pipe is provided on the top cover, a support leg is provided at the bottom of the mixer tank, a discharge pipe is provided at the bottom of the mixer tank, a valve is installed on the discharge pipe, and the mixer tank also includes the following:

[0011] The top cover has a frustum-shaped distribution platform at its bottom.

[0012] The adsorption chamber is provided at the bottom of the top cover. A linkage rod is provided on the central shaft inside the adsorption chamber. A drive motor is provided at the top of the top cover to drive the linkage rod to rotate. The bottom output end of the drive motor is connected to the upper end of the linkage rod. The lower end of the linkage rod passes through the central shaft of the diversion platform and extends downward into the interior of the mixer tank. A ring of guide turbine blades is provided above the diversion platform and mounted on the linkage rod. The rotating air outlets of multiple sets of guide turbine blades blow air downward.

[0013] A stirring component is disposed inside the mixer tank and its upper end is detachably connected to the lower end of the linkage rod.

[0014] In some embodiments, the feed pipes are distributed in a ring at equal intervals at the top edge of the mixer tank, and the lower end outlet of the feed pipes extends to the inside of the adsorption chamber corresponding to the guide turbine blades.

[0015] In some embodiments, the stirring component includes a stirring spindle and fan blade assemblies spaced at equal intervals on the outer cylinder of the stirring spindle, and two mating flanges are sleeved between the top of the stirring spindle and the bottom of the linkage rod, with a first fixing bolt threaded between the two flanges.

[0016] In some embodiments, the fan blade assembly includes multiple sets of vertically connected stirring blades, with a connecting block fixedly connected to the top of the uppermost stirring blade, and a threaded hole corresponding to the connecting block opened on the shaft of the stirring main shaft, with a second fixing bolt connected to the external thread of the connecting block.

[0017] In some embodiments, each of the feed tubes consists of an upper funnel-shaped section and a lower connecting tube.

[0018] Compared with existing technologies, the significant advantages of this invention are:

[0019] Firstly, through the axial linkage design of the drive motor, linkage rod, and guide turbine blades, a vertically downward active suction airflow is formed within the adsorption chamber. This structure forces the powder fed into the feed pipe into the mixing zone, while the stirring blades rotate synchronously with the linkage rod to generate horizontal vortices, forming a three-dimensional mixing field. Compared to the passive material feeding method of traditional equipment, this achieves synchronous feeding and mixing operations, significantly improving efficiency, and the vertical airflow effectively suppresses dust overflow.

[0020] Secondly, the synergistic effect of the annularly distributed feed pipes and the conical guide surface of the distribution platform creates a centrifugal diffusion path. The raw material forms a spiral falling trajectory along the inner wall of the tank, and combined with the circumferentially distributed design of the guide turbine blades, it enables multi-component powders to achieve layered penetration and mixing in space, completely solving the mixing blind zone problem caused by central accumulation.

[0021] Thirdly, the system employs an axially detachable connection between the flange and the first fixing bolt, combined with a modular threaded mounting structure for the agitator blades, including a connecting block and a second fixing bolt, forming a three-level maintenance system. Through the coordinated design of axial quick-release, radial adjustability, and unit replacement, non-destructive maintenance of the agitator components is achieved, significantly reducing the overall lifecycle maintenance costs of the equipment. Attached Figure Description

[0022] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0023] Figure 1 This is a three-dimensional structural diagram of a premixed powder mixer provided in one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal half-section structure of the premixed powder mixer provided in one embodiment of the present invention;

[0025] Figure 3 This is a side sectional view of the premixed powder mixer provided in one embodiment of the present invention;

[0026] Figure 4 This is a utility model Figure 3 Enlarged diagram of point A in the diagram;

[0027] Figure 5 This is a partial schematic diagram of the connection between the linkage rod and the stirring component in one embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Mixer tank; 101. Feed pipe; 102. Discharge pipe; 2. Support leg; 3. Top cover; 4. Drive motor; 401. Linkage rod; 402. Flange; 403. First fixing bolt; 5. Diverter platform; 501. Guide turbine blade; 6. Adsorption chamber; 7. Stirring main shaft; 8. Stirring blade; 801. Connecting block; 802. Second fixing bolt. Detailed Implementation

[0030] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0031] This utility model provides an improved premixed powder mixer. The technical solution of this utility model is as follows:

[0032] like Figure 1 - Figure 5 As shown, a premixed powder mixer includes a mixer tank 1, a matching top cover 3 is provided on the top of the mixer tank 1, a feed pipe 101 is provided on the top cover 3, a support leg 2 is provided at the bottom of the mixer tank 1, and a discharge pipe 102 is provided at the bottom of the mixer tank 1, with a valve installed on the discharge pipe 102. It also includes a diversion platform 5, with a frustum-shaped diversion platform 5 at the bottom of the top cover 3; and an adsorption chamber 6, with an adsorption chamber 6 at the bottom of the top cover 3. A linkage rod 401 is mounted on the central shaft inside the adsorption chamber 6. A drive motor 4 is mounted on the top of the top cover 3 to drive the linkage rod 401. The bottom output end of the drive motor 4 is connected to the upper end of the linkage rod 401. The lower end of the linkage rod 401 passes through the central shaft of the diversion platform 5 and extends downwards into the interior of the mixer tank 1. A ring of guide turbine blades 501 is mounted on the linkage rod 401 above the diversion platform 5. There is a gap between the guide turbine blades 501 and the inner side of the adsorption chamber 6 for feeding. When the lower end of pipe 101 extends downward into the adsorption chamber 6, the lower opening is located directly above the gap between the guide turbine blades 501 and the inner side of the adsorption chamber 6. The rotating air outlets of multiple sets of guide turbine blades 501 blow air downwards. The flow distribution platform 5 extends into the mixer tank 1 in a frustum shape, and its inclined surface forms an annular material drop channel with the inner wall of the mixer tank 1. The powder falling from the feed pipe 101 can fall through the gap between a ring of guide turbine blades 501 and the inner wall of the chamber. When the guide turbine blades 501 rotate at high speed, a stable vertical downward airflow is formed in the adsorption chamber 6, which can evenly suck the powder falling from the feed pipe 101 into the mixing area and avoid dust overflow.

[0033] A stirring component is disposed inside the mixer tank 1 and the upper end of the stirring component is detachably connected to the lower end of the linkage rod 401.

[0034] like Figure 1 and Figure 2 As shown, in one embodiment, the feed pipes 101 are distributed in a ring at equal intervals at the top edge of the mixer tank 1, and the lower outlet of the feed pipes 101 extends into the adsorption chamber 6 to the corresponding guide turbine blades 501. By distributing the feed pipes 101 in a ring at equal intervals at the top edge of the mixer tank 1 and positioning their lower outlets, multiple groups of powdered raw materials can simultaneously enter the mixer tank 1 from different feed pipes 101. Under the downward suction duct formed by the rotation of the guide turbine blades 501, they can quickly and evenly enter the tank for mixing, avoiding localized accumulation caused by concentrated material entry and improving the efficiency and uniformity of material entry into the tank.

[0035] like Figure 2 and Figure 5 As shown, in one embodiment, the stirring component includes a stirring spindle 7 and fan blade assemblies evenly spaced on the outer cylinder of the stirring spindle 7. Two mating flanges 402 are fitted between the top of the stirring spindle 7 and the bottom of the linkage rod 401, and a threaded first fixing bolt 403 is provided between the two flanges 402. By providing two mating flanges 402 and a first fixing bolt 403 between the top of the stirring spindle 7 and the bottom of the linkage rod 401, a detachable connection between the stirring component and the linkage rod 401 is achieved. This facilitates quick disassembly of the stirring component from the linkage rod 401 when the equipment needs maintenance, component replacement, or cleaning, improving the convenience of equipment maintenance and saving maintenance time and costs.

[0036] like Figure 4 As shown, in one embodiment, the fan blade assembly includes multiple sets of vertically connected stirring blades 8. A connecting block 801 is fixedly connected to the top of the uppermost stirring blade 8. A threaded hole corresponding to the connecting block 801 is opened on the shaft of the stirring main shaft 7. A second fixing bolt 802 is threadedly connected to the external of the connecting block 801. By setting the connecting block 801, the second fixing bolt 802, and the corresponding threaded hole on the stirring main shaft 7, the stirring blades 8 can be threadedly installed on the shaft of the stirring main shaft 7. After the stirring assembly is pulled out from the mixer tank 1, the worn stirring blades 8 can be easily replaced, or the fan blade assembly can be removed from the stirring main shaft 7 for subsequent cleaning of the equipment, extending the service life of the equipment and ensuring the stability of the mixing effect.

[0037] like Figure 1 and Figure 2As shown, in one embodiment, each feed pipe 101 consists of an upper funnel-shaped section and a lower connecting pipe. The funnel-shaped section at the upper end and the connecting pipe at the lower end of the feed pipe 101 facilitates smoother pouring of powdered raw materials into the feed pipe 101, reducing the likelihood of blockage. Furthermore, the multiple feed pipes 101 positioned at the top edge of the mixer tank 1, in conjunction with the stirring components inside the mixer tank 1, ensure that the raw materials, after falling into the mixer tank 1, are mixed along the edge as the stirring components rotate, preventing accumulation at the center of the mixer tank 1 and thus improving mixing uniformity and efficiency.

[0038] like Figure 2 and Figure 3 As shown, in one embodiment, the bottom of the top cover 3 is provided with a frustum-shaped flow divider 5. The flow divider 5 prevents powdered raw materials from accumulating in the middle area of ​​the mixer tank 1 and from falling directly onto the stirring components. Instead, the raw materials fall rapidly downwards along the inclined surface of the flow divider 5 and the inner side of the mixer tank 1, allowing for a more even distribution of the raw materials inside the tank. This facilitates thorough mixing by the stirring components and improves the mixing quality.

[0039] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in one embodiment, the bottom of the top cover 3 is provided with an adsorption cavity 6, and a linkage rod 401 is provided on the central shaft inside the adsorption cavity 6. A drive motor 4 for driving the linkage rod 401 to rotate is provided on the top of the top cover 3. The bottom output end of the drive motor 4 is connected to the upper end of the linkage rod 401. The lower end of the linkage rod 401 passes through the central shaft of the diversion platform 5 and extends downward into the interior of the mixer tank 1. A ring of guide turbine blades 501 installed on the linkage rod 401 is provided above the diversion platform 5, and the rotating air outlets of multiple sets of guide turbine blades 501 blow air downward. By configuring the drive motor 4, linkage rod 401, adsorption chamber 6, and guide turbine blades 501, when the raw material falls into the mixer tank 1 through the feed pipe 101, the linkage rod 401 drives the guide turbine blades 501 to rotate, forming a downward suction channel inside the adsorption chamber 6. This draws the powdery raw material poured into the feed pipe 101 downward into the mixer tank 1 without leaving the extracted raw material at the extraction point. At the same time, the drive motor 4 drives the linkage rod 401 to stir the raw material inside the mixer tank 1, achieving both feeding and stirring functions. This improves the working efficiency of the equipment and reduces its complexity and cost.

[0040] The vertical airflow generated by the guide turbine blades 501 and the horizontal vortex of the stirring blades 8 form a three-dimensional mixing field, enhancing the mixing efficiency; the inclined design of the flow divider 5 causes the powder to generate centrifugal motion, effectively breaking up the raw material agglomeration; the modular connection structure allows the equipment to quickly adapt to various capacity specifications.

[0041] The working principle and usage process of this utility model are as follows: First, multiple sets of powdered raw materials are poured into the feed pipes 101, which are evenly spaced in a ring at the top edge of the mixer tank 1. Since the upper end of the feed pipe 101 is funnel-shaped, the raw materials are poured in smoothly. At this time, the drive motor 4 is started, which drives the linkage rod 401 to rotate. The guide turbine blades 501 on the linkage rod 401 rotate within the adsorption chamber 6, forming a downward-drawing air duct that draws the raw materials from the lower outlet of the feed pipe 101 into the mixer tank 1. The raw materials fall rapidly downwards along the inclined surface of the distribution platform 5 and the inner side of the mixer tank 1, distributing themselves along the inner edge of the tank. Next, the linkage rod 401 drives the stirring component to rotate, and the stirring blades 8 on the stirring component stir and mix the raw materials that have fallen into the inner edge of the tank. After mixing is complete, the valve on the discharge pipe 102 is opened to discharge the mixed material. If equipment maintenance or cleaning is required, the stirring component can be removed from the linkage rod 401 by removing the first fixing bolt 403, and the stirring blade 8 can be removed from the stirring main shaft 7 by removing the second fixing bolt 802.

[0042] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A premixed powder mixer, comprising a mixer tank (1), wherein a matching top cover (3) is provided on the top of the mixer tank (1), a feed pipe (101) is provided on the top cover (3), a support leg (2) is provided at the bottom of the mixer tank (1), and a discharge pipe (102) is provided at the bottom of the mixer tank (1), wherein a valve is installed on the discharge pipe (102), characterized in that: Also includes; The bottom of the top cover (3) is provided with a frustum-shaped distribution platform (5). The adsorption chamber (6) is provided at the bottom of the top cover (3). A linkage rod (401) is provided on the central shaft inside the adsorption chamber (6). A drive motor (4) is provided at the top of the top cover (3) to drive the linkage rod (401) to rotate. The bottom output end of the drive motor (4) is connected to the upper end of the linkage rod (401). The lower end of the linkage rod (401) passes through the central shaft of the diversion platform (5) and extends downward into the interior of the mixer tank (1). A ring of guide turbine blades (501) is provided above the diversion platform (5) and mounted on the linkage rod (401). The rotating air outlets of multiple sets of guide turbine blades (501) blow air downward. A stirring component is disposed inside the mixer tank (1) and the upper end of the stirring component is detachably connected to the lower end of the linkage rod (401).

2. The premixed powder mixer according to claim 1, characterized in that: The feed pipe (101) is distributed in a ring at equal intervals at the top edge of the mixer tank (1), and the lower end outlet of the feed pipe (101) extends to the inside of the adsorption chamber (6) to the corresponding guide turbine blade (501).

3. The premixed powder mixer according to claim 1, characterized in that: The stirring component includes a stirring main shaft (7) and fan blades with equal spacing on the outer cylinder of the stirring main shaft (7). The top of the stirring main shaft (7) and the bottom of the linkage rod (401) are fitted with two flanges (402) that are adapted to each other. A first fixing bolt (403) with threaded fixing is provided between the two flanges (402).

4. A premixed powder mixer according to claim 3, characterized in that: The fan blade assembly includes multiple sets of vertically connected stirring blades (8). The top of the uppermost stirring blade (8) is fixedly connected to a connecting block (801). The stirring main shaft (7) has a threaded hole corresponding to the connecting block (801) on its shaft. The connecting block (801) is externally threaded with a second fixing bolt (802).

5. A premixed powder mixer according to claim 1, characterized in that: Each of the feed tubes (101) consists of an upper funnel-shaped section and a lower connecting tube.

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