Mosquito-repellent incense powder homogenizing device with high mixing efficiency

Abstract

The mosquito-repellent incense powder homogenizing device with high mixing efficiency comprises a vertical mixing bin, a tank body of the mixing bin is a square body, the bottom of the mixing bin is provided with a bottom face designed to be of a multi-section type inclined face structure, and a left transmission conveying mechanism and a right transmission conveying mechanism which are installed on the bottom face and are arranged in a left-low-right-high staggered mode. The bottom surface of the multi-section inclined surface structure design comprises a left inclined surface structure which is connected with the left side wall of the mixing bin and extends and inclines towards the left transmission conveying mechanism, a right inclined surface structure which is connected with the right side wall of the mixing bin and extends and inclines towards the right transmission conveying mechanism, and a middle inclined surface structure which is positioned between the left transmission conveying mechanism and the right transmission conveying mechanism; a feeding mechanism for returning materials to the top of the mixing bin is arranged at an output port of the left transmission conveying mechanism, and a communicating inclined groove communicating with the output port of the left transmission conveying mechanism is formed in an output port of the right transmission conveying mechanism. The efficient homogenizing effect can be achieved, the structure is simple, the occupied area is small, the utilization efficiency of the mixing bin is high, and electricity, time and labor are saved.

Description

Technical Field

[0001] The invention relates to the field of homogenizers, in particular to a mosquito coil powder homogenizing device with high mixing efficiency. Background Art

[0002] The raw materials of mosquito coils are generally processed from a variety of powders (such as wood powder, carbon powder, sticky wood powder, bamboo powder, red stone gum powder, elm bark powder, etc.). First, the powders are fully mixed, and then the mixture is formed into mosquito coils by a mosquito coil forming machine, and then dried to complete the production. In the production process of mosquito coils, the powders are mostly added to a vertical large drum with a stirrer for large stirring and mixing. During stirring, since the raw materials are all in powder form, and the mass specific gravity is greatly different, the powders have a certain viscosity and are easy to agglomerate. This traditional stirring method is difficult to make the powders mix evenly, thereby affecting the quality of the products produced. The Chinese patent with patent number CN01720168834.2 discloses a mosquito coil powder homogenizing device, which avoids the problem of uneven stirring of the powder raw materials due to gravity through the rotation design of the horizontal inner barrel, and the bottom powder can be continuously stirred by a stirring device with a stirring nozzle, so as to achieve the effect of efficient stirring and the purpose of improving production efficiency. However, its overall structure is complex and the production cost is high. In addition, the more times and the longer the powder is rotated and rubbed, the more the physical and chemical properties of the powder will decay and the more viscosity will be lost, making the mosquito coil powder produced later not sticky and easy to loosen and fall off, affecting the product quality. In addition, this horizontal design occupies a large area and requires a large production site, which is also a huge cost for enterprises at this stage of rising land costs. Therefore, it is difficult to be accepted by the majority of manufacturers. Summary of the invention

[0003] The purpose of the present invention is to provide a mosquito coil powder homogenizing device which can achieve the effect of efficient mixing, reduce the time of raw material homogenization and improve production efficiency, and has a simple structure, a small footprint, a high utilization efficiency of the mixing bin, and saves electricity, time and labor.

[0004] The technical solution of the present invention is achieved in this way:

[0005] The mosquito coil powder homogenizing device with high mixing efficiency described in the present invention comprises a vertical mixing bin, a feeding pipe or a feeding hopper for discharging materials from the upper end of the mixing bin, and is characterized in that: the tank body of the mixing bin is a square body, the bottom of the mixing bin is provided with a bottom surface with a multi-stage inclined surface structure design, a left transmission conveying mechanism and a right transmission conveying mechanism installed on the bottom surface and staggered and arranged with a left lower and a right higher state, the bottom surface with a multi-stage inclined surface structure design comprises a left inclined surface structure connected to the left side wall of the mixing bin and extending and tilting to the left transmission conveying mechanism, a right inclined surface structure connected to the right side wall of the mixing bin and extending and tilting in the direction of the right transmission conveying mechanism, and a middle inclined surface structure located between the left transmission conveying mechanism and the right transmission conveying mechanism, wherein the left transmission conveying mechanism and the right transmission conveying mechanism are communicated with the inner cavity of the mixing bin, a feeding mechanism for returning materials to the top of the mixing bin to realize circulating mixing is provided at the output port of the left transmission conveying mechanism, and the output port of the right transmission conveying mechanism delivers powder to the output port of the left transmission conveying mechanism through an externally arranged connecting inclined pipe or connecting inclined slot.

[0006] Preferably, the slope of the inclined surface structure is designed to be 40-60 degrees. The most preferred is 45-50 degrees. The feeding mechanism is a spiral hose feeder, which includes a hose with a manganese steel spiral and a feeding motor that drives the manganese steel spiral in the hose to move to achieve feeding.

[0007] Furthermore, the left transmission conveying mechanism and the right transmission conveying mechanism are mainly composed of a horizontal screw groove with an upper opening (hereinafter referred to as horizontal groove), a screw located in the screw groove, and a driving motor for driving the screw to rotate, and the output ports of the left transmission conveying mechanism and the right transmission conveying mechanism are respectively arranged at the outer end bottom of the corresponding screw groove. The screw groove is preferably a V-shaped groove with a circular arc transition at the bottom.

[0008] Furthermore, an inverted V-shaped material guiding and pressure relief plate is provided above the horizontal screw groove, and the gaps between the two sides of the material guiding and pressure relief plate and the two sides of the horizontal screw groove form a material feed port.

[0009] Furthermore, a material spreading rack is provided at the top of the inner cavity of the mixing bin, the discharge pipe opening of the feeding mechanism is located above the material spreading rack, the feeding mechanism feeds the powder to the material spreading rack, and then the powder is spread into the mixing bin from all sides of the material spreading rack.

[0010] Furthermore, the screw grooves of the left transmission conveying mechanism and the right transmission conveying mechanism are respectively arranged at the lower end of the tank body near the left and right sides, and a plurality of pull rods are arranged in the mixing bin. Furthermore, at least a part of the pull rod is arranged as a rotating rod body connected to a motor, and the rotating rod body is provided with rotating blades. For example, the two ends of the rotating rod body pass through the side of the mixing bin and are positioned by an external stopper, and one end of the rotating rod body is connected to the rotating shaft of the micro motor. In this way, the powder material scattered from the spreading rack can be once again dispersed and homogenized under the action of the rotating blades in the inner cavity of the mixing bin.

[0011] In order to further improve the homogenization efficiency and prevent the powder from agglomerating and being retained, a vibrator is installed on the material spreading frame. Furthermore, the driving motors in the left transmission conveying mechanism and the right transmission conveying mechanism are variable speed motors, and the speeds can be adjusted respectively, and the variable speed motors in the left transmission conveying mechanism and the variable speed motors in the right transmission conveying mechanism have a variable speed difference. The left transmission conveying mechanism and the right transmission conveying mechanism achieve different mixing speeds and form a left and right powder downward speed difference by adjusting the screw speeds in their respective screw grooves, thereby further increasing the number of homogenization times and improving the homogenization efficiency. It is preferred that the motor speed of the right transmission conveying mechanism is smaller than the motor speed of the left transmission conveying mechanism. In this way, in addition to the different mixing speeds in the horizontal grooves on both sides to form a left and right powder downward speed difference to achieve a second mixing of the powders, a part of the powders that fall and accumulate above the right transmission conveying mechanism will be sent to the left transmission conveying mechanism for a second mixing through the middle inclined surface structure while descending and mixing by themselves. Moreover, these powders will be mixed again with the powders scattered from the material spreading frame during the process of descending along the middle inclined surface. In addition, the speed difference between the left transmission conveying mechanism and the right transmission conveying mechanism has another advantage, which is that the powder can be cleaned according to the different conditions of the powder on the left and right sides of the mixing bin. For example, when there is a lot of powder accumulated at the left transmission conveying mechanism, the left screw speed is adjusted faster to clean the accumulated powder on the left as soon as possible. After cleaning, the speeds of both sides are adjusted according to the situation.

[0012] A weighing bin and a weighing sensor connected to the weighing bin and measuring each output of powder are provided on the outside of the tank body of the mixing bin; a material frame with an open upper end and a conveying pipe connecting the material frame and the weighing bin are provided on the material spreading rack; the discharge pipe port of the feeding mechanism is located above the material frame, and a groove communicating with the upper end of the conveying pipe is correspondingly opened on the side of the material frame.

[0013] In order to prevent the spontaneous combustion and explosion of dust in the mixing bin and ensure its safe use, the mixing bin is also provided with a spontaneous combustion and explosion prevention safety device for regularly injecting CO2 gas into its inner cavity.

[0014] The advantages of the present invention compared with the prior art are:

[0015] (1) The present invention adopts a three-dimensional square mixing silo structure, which greatly reduces the floor space used by the equipment compared with the existing horizontal mixing silo, thereby reducing the investment cost of the plant. Compared with the existing vertical circular mixing silo, under the condition of the same floor space, the square silo has a larger volume of available cavity than the circular silo, and has a higher utilization rate.

[0016] (2) The present invention adopts a bottom structure of a multi-stage inclined surface structure design for the bottom of the mixing bin, and installs a left transmission conveying mechanism and a right transmission conveying mechanism on the bottom surface, which are staggered and arranged with the left lower and the right higher. In the process of homogenizing mosquito coil powder, the present invention can fully utilize the multi-stage inclined surface structure design of the bottom surface, so that the powder can form different landing mixing times and different landing heights when falling from the top of the mixing bin for homogenization, effectively avoiding the problems of powder accumulation and agglomeration at the bottom, low mixing efficiency, and long mixing time caused by the powder falling on the bottom surface at the same height. In addition, the middle inclined surface structure of the bottom surface of the mixing bin can make the powder falling on it be continuously sent to the left transmission conveying mechanism along the inclined surface for a second mixing under the action of gravity, further improving its mixing efficiency. Moreover, this natural homogenization method of powder by using different height differences and inclined surfaces on the bottom surface has little effect on the physical and chemical properties of the powder, and the physical properties are not attenuated. The mosquito coil powder produced is firmly bonded, not easy to fall off, and has good product quality.

[0017] (3) The present invention also adopts a structure in which the output port of the right transmission conveying mechanism is used to deliver the powder to the output port of the left transmission conveying mechanism through a connecting inclined pipe or a connecting inclined slot, so that the powder that has been stirred and homogenized for the first time in the horizontal slot of the right transmission conveying mechanism will be homogenized for the second time due to different gravity of different powders at different descending speeds when it descends on the connecting inclined pipe or the connecting inclined slot, and then mixed with the powder output by the left transmission conveying mechanism to achieve the third homogenization, and then sent to the top of the mixing bin through the feeding mechanism to return the material and release it to achieve cyclic mixing. This homogenization method of multiple homogenization and cyclic mixing of powder greatly improves the homogenization efficiency of powder, saves homogenization time, and truly achieves the purpose of saving electricity, time and labor. Moreover, this homogenization method, which arranges transmission output mechanisms on the left and right, and then sends the powder to the output port of the left transmission conveying mechanism through an externally connected inclined pipe or connecting inclined slot under the mixing bin for mixing and then returns the material for circulation, effectively reduces the discharge pressure of the powder and improves the discharge speed, and solves the problems that the existing mixing bin has only one discharge port, resulting in high powder pressure at the bottom of the mixing bin, slow discharge, and easy blockage of the discharge port. Moreover, when the screws in the left transmission conveying mechanism and the right transmission conveying mechanism of the present invention rotate, they can not only stir the powder to make it homogenized, but also accelerate the flow of the powder along the screw groove, thereby improving the material transportation rate of the device.

[0018] (4) Since the variable speed motor of the left transmission conveying mechanism and the variable speed motor of the right transmission conveying mechanism have a speed difference, the powders on the left and right sides of the mixing bin form a downward speed difference (one side is fast and the other side is slow) under the action of the screws in the two horizontal grooves, and then are mixed again at the output port of the left transmission conveying mechanism, thereby further improving the homogenization efficiency.

[0019] (5) Since the present invention also adopts a weighing bin and a weighing sensor provided on the outer side of the tank body of the mixing bin, after the homogenized powder is sent to the material frame on the material spreading rack, it can be directly sent to the weighing bin through a conveying pipe connected to the material frame to measure the output powder each time, so it is more convenient to use.

[0020] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the rear-view stereoscopic structure after removing the feeding mechanism and the conveying pipe;

[0023] Figure 3-Figure 4 This is a schematic cross-sectional view of the present invention after removing the feeding mechanism and the conveying pipe;

[0024] Figure 5 This is a schematic cross-sectional view of another embodiment of the present invention after removing the feeding mechanism and the conveying pipe. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 5As shown, the mosquito coil powder homogenizing device with high mixing efficiency of the present invention comprises a vertical mixing bin 1, a feeding pipe or a feeding hopper for discharging materials from the upper end of the mixing bin 1, the tank body of the mixing bin 1 is a square body, and a supporting frame is provided below the mixing bin. The bottom of the mixing bin 1 is provided with a bottom surface 4 with a multi-stage inclined structure design, a left transmission conveying mechanism 2 and a right transmission conveying mechanism 3 installed on the bottom surface 4 and staggered with a left lower and a right higher position (it can also be staggered with a left higher and a right lower position, which are equivalent), the bottom surface with a multi-stage inclined structure design includes a left inclined structure 41 connected to the left side wall of the mixing bin 1 and extending and tilting to the left transmission conveying mechanism 2, a right inclined structure 42 connected to the right side wall of the mixing bin 1 and extending and tilting toward the right transmission conveying mechanism 3, and a middle inclined structure 43 located between the left transmission conveying mechanism 2 and the right transmission conveying mechanism 3, wherein the left transmission conveying mechanism 2 and the right transmission conveying mechanism 3 are respectively communicated with the inner cavity of the mixing bin 1, and a feeding mechanism for returning material to the top of the mixing bin 1 to realize circulating mixing is provided at the output port of the left transmission conveying mechanism 2, and the output port of the right transmission conveying mechanism 3 delivers powder to the output port of the left transmission conveying mechanism 2 through an external connecting inclined pipe or connecting inclined groove 5 (preferably a connecting inclined groove). The slope of the middle inclined surface structure 43 is preferably 45-50 degrees. If the slope is too small, the powder is not easy to fall, and if the slope is too steep, the falling speed is too fast, which affects the homogenization efficiency. And because the left and right sides and the middle position of the bottom of the mixing bin are inclined structures, the problem of powder retention in dead corners is effectively avoided. The feeding mechanism generally uses a spiral hose feeder, which includes a hose 6 with a manganese steel spiral installed and a feeding motor that drives the manganese steel spiral in the hose 6 to move to achieve feeding.

[0026] like Figure 3 As shown, the left transmission conveying mechanism 2 and the right transmission conveying mechanism 3 are mainly composed of a horizontal screw groove with an upper end opening, a screw located in the screw groove and a driving motor for driving the screw to rotate. The output ports of the left transmission conveying mechanism 2 and the right transmission conveying mechanism 3 are respectively arranged at the outer end bottom of the corresponding screw groove. The outer end of the screw groove extends outward from the bottom of the mixing bin. When the screw rotates, it can not only stir the powder to make it homogenized, but also accelerate the flow of the powder along the screw groove, thereby improving the material transportation rate of the device. Further, the driving motors in the left transmission conveying mechanism 2 and the right transmission conveying mechanism 3 are variable speed motors. The screws in the screw grooves of the left transmission conveying mechanism and the right transmission conveying mechanism are adjusted to have different speed differences under the action of their respective variable speed motors, forming a speed difference of the left and right powders going down, so as to achieve mixing of the powders again. It is preferred that the speed of the variable speed motor of the left transmission conveying mechanism 2 is greater than the speed of the variable speed motor in the right transmission conveying mechanism 3. In order to reduce the force of powder falling onto the screw from above, an inverted V-shaped material guiding and pressure relief plate 7 is provided above the horizontal screw groove, and the gaps between the two sides of the material guiding and pressure relief plate 7 and the two sides of the horizontal screw groove form a feed port.

[0027] A spreading rack 8 is provided at the top of the inner cavity of the mixing bin 1, and the discharge pipe of the feeding mechanism is located above the spreading rack 8. The feeding mechanism sends the powder to the spreading rack 8, and then sprinkles it into the mixing bin 1 from all sides of the spreading rack 8. The screw grooves of the left transmission conveying mechanism 2 and the right transmission conveying mechanism 3 are respectively arranged at the lower end of the can body near the left and right sides, and a plurality of separate pull rods 11 are provided in the mixing bin 1. The purpose of providing the pull rod is to prevent the mixing bin from expanding and deforming when there is a lot of powder in the mixing bin. Furthermore, at least a part of the pull rod 11 is configured as a rotating rod body connected to a motor, and the rotating rod body is provided with rotating blades. The two ends of the rotating rod body pass through the side of the mixing bin, and are then positioned by external blocks, and one end of the rotating rod body is connected to the rotating shaft of the micro motor. Figure 5 In this way, the powder scattered from the spreading rack can be dispersed and homogenized again in the inner cavity of the mixing bin under the action of the rotating blades.

[0028] Further, a vibrator is installed on the material spreading frame 8, so that the powder on the material spreading frame is not easy to agglomerate and be detained.

[0029] In order to make the powder after homogenization be directly measured and output, a weighing bin 9 and a weighing sensor connected to the weighing bin 9 and measuring each output of the powder are provided on the outer side of the tank body of the mixing bin 1. The material spreading rack 8 is provided with a material frame 81 with an open upper end and a conveying pipe 91 connecting the material frame 81 and the weighing bin 9. The discharge pipe of the feeding mechanism is located above the material frame, and the side of the material frame is correspondingly provided with a notch connected to the upper end of the conveying pipe. In this way, after the homogenized powder is sent to the material frame on the material spreading rack, it can be directly sent to the weighing bin through the conveying pipe connected to the material frame to measure each output of the powder, so it is more convenient to use. The conveying pipe can be connected to an air pump, or it can be a pipe body with a manganese steel spiral feeder built in and connected to a motor.

[0030] In order to prevent the spontaneous combustion and explosion of dust during the use of the mixing bin, the mixing bin 1 is also provided with a spontaneous combustion and explosion prevention safety device for regularly injecting CO2 gas into its inner cavity. The spontaneous combustion and explosion prevention safety device includes a CO2 gas generator and an air supply pipe for injecting CO2 gas into the mixing bin. A plug-in pipe 10 for connecting the air supply pipe is provided at the bottom of the mixing bin 1.

[0031] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this patent.

[0032] Although the present invention is described with reference to specific embodiments, such description is not intended to limit the present invention. With reference to the description of the present invention, other changes of the disclosed embodiments are predictable to those skilled in the art, and such changes should fall within the scope defined by the claims.

Claims

1. A mosquito coil powder homogenizing device with high mixing efficiency, comprising a vertical mixing bin (1), a feeding pipe or a feeding hopper for discharging materials from the upper end of the mixing bin (1), characterized in that: The mixing bin (1) has a square body. The bottom of the mixing bin (1) is provided with a bottom surface (4) with a multi-stage inclined surface structure design, a left transmission and conveying mechanism (2) and a right transmission and conveying mechanism (3) installed on the bottom surface (4) and staggered in a manner of being lower on the left and higher on the right. The bottom surface with the multi-stage inclined surface structure design comprises a left inclined surface structure (41) connected to the left side wall of the mixing bin (1) and extending and tilting toward the left transmission and conveying mechanism (2), a right inclined surface structure (42) connected to the right side wall of the mixing bin (1) and extending and tilting toward the right transmission and conveying mechanism (3). 2) a middle inclined surface structure (43) located between the left transmission conveying mechanism (2) and the right transmission conveying mechanism (3), wherein the left transmission conveying mechanism (2) and the right transmission conveying mechanism (3) are respectively connected to the inner cavity of the mixing bin (1), and a feeding mechanism is provided at the output port of the left transmission conveying mechanism (2) for returning the material to the top of the mixing bin (1) to realize circulating mixing, and the output port of the right transmission conveying mechanism (3) delivers the powder to the output port of the left transmission conveying mechanism (2) through an externally arranged connecting inclined pipe or connecting inclined slot (5).

2. The mosquito coil powder homogenizing device according to claim 1, characterized in that: The slope of the middle inclined surface structure (43) is 40-60 degrees. The feeding mechanism is a spiral hose loader, which includes a hose (6) with a manganese steel spiral installed therein and a feeding motor for driving the manganese steel spiral in the hose (6) to move to achieve feeding.

3. The mosquito coil powder homogenizing device according to claim 1, characterized in that: The left transmission conveying mechanism (2) and the right transmission conveying mechanism (3) are mainly composed of a horizontal screw groove with an opening at the upper end, a screw located in the screw groove, and a driving motor for driving the screw to rotate. The output ports of the left transmission conveying mechanism (2) and the right transmission conveying mechanism (3) are respectively arranged at the outer end bottom of the corresponding screw groove.

4. The mosquito coil powder homogenizing device according to claim 3, characterized in that: An inverted V-shaped material guiding and pressure relief plate (7) is also provided above the horizontal screw groove, and the gaps between the two sides of the material guiding and pressure relief plate (7) and the two sides of the horizontal screw groove form a material feed port.

5. The mosquito coil powder homogenizing device according to claim 3, characterized in that: The screw grooves of the left transmission conveying mechanism (2) and the right transmission conveying mechanism (3) are respectively arranged at the lower end of the can body near the left and right sides, and a plurality of separately arranged pull rods (11) are arranged in the mixing bin (1).

6. The mosquito coil powder homogenizing device according to claim 1, characterized in that: A material spreading rack (8) is provided at the top of the inner cavity of the mixing bin (1), and a material discharge pipe opening of the feeding mechanism is located above the material spreading rack (8). The feeding mechanism feeds the powder to the material spreading rack (8), and then the powder is spread into the mixing bin (1) from all sides of the material spreading rack (8).

7. The mosquito coil powder homogenizing device according to claim 4, characterized in that: A vibrator is installed on the material spreading frame (8).

8. The mosquito coil powder homogenizing device according to claim 1, characterized in that: A weighing bin (9) and a weighing sensor connected to the weighing bin (9) and measuring the output of powder each time are arranged on the outer side of the tank body of the mixing bin (1); a material frame (81) with an open upper end and a conveying pipe (91) connecting the material frame (81) and the weighing bin (9) are arranged on the material spreading rack (8); a discharge pipe opening of the feeding mechanism is located above the material frame, and a slot communicating with the upper end of the conveying pipe is correspondingly opened on the side of the material frame.

9. The mosquito coil powder homogenizing device according to claim 1, characterized in that: The driving motors in the left transmission conveying mechanism (2) and the right transmission conveying mechanism (3) are variable speed motors, and the variable speed motor in the left transmission conveying mechanism (2) and the variable speed motor in the right transmission conveying mechanism (3) have a speed difference.

10. The mosquito coil powder homogenizing device according to claim 1, characterized in that: The mixing chamber (1) is also provided with a safety device for preventing spontaneous combustion and explosion for regularly injecting CO2 gas into its inner cavity.

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