Compact mixing and blending machine

Abstract

The utility model discloses a compact type mixing and blending machine, which is used for mixing zinc oxide in different turnover bags, and comprises a rack and a mixing device which is fixedly arranged relative to the rack, a mixing feed hopper is arranged on the mixing device, a star-shaped feeding device is arranged on the rack and above the mixing feed hopper, and the star-shaped feeding device is connected with the mixing feed hopper. The discharging end of the star-shaped feeding device is connected with the mixed feeding hopper through a flange; a spiral feeding device is arranged on the portion, located on the side of the mixing feeding hopper, of the rack, and the discharging end of the spiral feeding device extends into the mixing feeding hopper. The rack is provided with a bag feeding device used for providing turnover bags for the feeding end of the star-shaped feeding device and the feeding end of the spiral feeding device. The device is compact in structure, small in occupied area, small in caking influence and favorable for improving the mixing precision.

Description

Technical Field

[0001] The utility model relates to the technical field of powder material mixing, in particular to a compact mixing and dispensing machine. Background Art

[0002] Zinc oxide (chemical formula: ZnO) is an oxide of zinc, commonly known as zinc white. It is a commonly used chemical additive in the metallurgical and chemical industries. There are two main methods for producing zinc oxide: direct method and indirect method. The diameter of zinc oxide particles produced by the indirect method is 0.1 to 10 microns, and the purity is between 99.5% and 99.7%, which is relatively high. The production of zinc oxide by the indirect method is to first melt the zinc-containing material into zinc liquid, and then continuously evaporate the zinc liquid into zinc vapor. The zinc vapor is sprayed into the oxidation chamber to react with oxygen in the air to form zinc oxide particles. The zinc oxide particles are sent to the bag collection device for solid-gas separation to obtain indirect zinc oxide. The produced zinc oxide is filled into turnover bags for transfer, storage or other processing.

[0003] In actual production, affected by the quality of raw materials, process parameter settings, external environmental changes, collection channels, etc., the zinc oxide obtained has differences in various indicators such as zinc oxide content, hydrochloric acid insoluble content, and lead content. For example, when using different raw materials such as zinc ingots or zinc slag, the lead content in the produced zinc oxide may vary from 50 to 1000 ppm. For example, the zinc oxide collected from the final bag collection device can have a zinc oxide content of 99.7% or more, while the zinc oxide collected by sedimentation during the gas delivery process has a zinc oxide content of 99.5% to 99.6%. Among the downstream products of zinc oxide, different fields have different requirements for zinc oxide indicators. For example, some industries have relatively low requirements for zinc oxide content, so they tend to prefer zinc oxide with relatively low purity and relatively low price, such as zinc oxide with a purity of 99.65%. For example, some industries have low requirements for lead content, such as as long as it is below 500ppm. Therefore, before zinc oxide products are exported, it is often necessary to mix and formulate the zinc oxides with different indicators that have been produced according to the needs of downstream products, so as to reduce product costs and production losses while meeting the needs of downstream products.

[0004] Based on this, the inventor has proposed a fixed-ratio mixing and dispensing machine with the announcement number "CN220610239U" to carry out the above-mentioned mixing and dispensing operations, but the mixing and dispensing machine still has shortcomings, which are specifically reflected in: First, there are differences in the layout of the site and the equipment construction of different production workshops. The above mixing and dispensing machines occupy a large area and are difficult to be arranged in a space with a small ground projection area; Second, three screw feeders jointly feed the downstream mixing device. Affected by the volume of the turnover bag, the screw feeder will have a long length. Based on the fact that the feeding is achieved by pushing the spiral blades in the screw feeder, during this long pushing and conveying process, the zinc oxide powder with higher viscosity will be partially squeezed into blocks, cakes and other local conditions with higher density. The increase in local density will cause the proportion of zinc oxide supplied to the downstream mixing device to change, affecting the final product indicators. For this reason, it is necessary to comprehensively consider the equipment volume, space layout and mixing accuracy to improve the mixing and dispensing machine. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a compact mixing and dispensing machine which has a compact structure, occupies a small area, is less affected by agglomeration and is conducive to improving mixing accuracy.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a compact mixing and dispensing machine, used for mixing zinc oxide in different turnover bags, comprising a frame and a mixing device fixedly arranged relative to the frame, the mixing device is provided with a mixing feed hopper, a star-shaped feeding device is installed on the frame above the mixing feed hopper, and the discharge end of the star-shaped feeding device is flange-connected to the mixing feed hopper; a spiral feeding device is provided on the frame at the side of the mixing feed hopper, and the discharge end of the spiral feeding device is extended into the mixing feed hopper; a bagging device is provided on the frame for providing turnover bags to the feeding ends of the star-shaped feeding device and the feeding ends of the spiral feeding device respectively.

[0007] As a preferred technical solution, a feeding avoidance port corresponding to the spiral feeding device is provided on the side wall of the mixing feed hopper, a clearance is fitted between the feeding avoidance port and the spiral feeding device, and a flexible dustproof structure is provided between the feeding avoidance port and the spiral feeding device.

[0008] As a preferred technical solution, the discharge end of the star-shaped feeding device is arranged on a side of the mixing feed hopper away from the discharge end of the spiral feeding device.

[0009] As a preferred technical solution, a first vibrator is installed on the star-shaped feeding device.

[0010] As a preferred technical solution, a second vibrator is installed on the spiral feeding device.

[0011] As a preferred technical solution, the star-shaped feeding device includes a laterally arranged cylindrical outer shell, a star-shaped feed port is provided on the top of the cylindrical outer shell and a star-shaped discharge port is provided on the bottom, a star-shaped feed hopper is provided on the star-shaped feed port, and the star-shaped discharge port is flange-connected to the mixing feed hopper; a concentrically arranged star shaft is rotatably mounted on the cylindrical outer shell, a plurality of star-shaped blades are fixedly provided on the outer circumferential surface of the star shaft, and one end of the star shaft extending out of the cylindrical outer shell is connected to a star-shaped feeding motor.

[0012] As a preferred technical solution, the bag loading device includes a bag loading crane installed laterally and movably on the frame, and a lifting structure for lifting the turnover bag is installed on the bag loading crane. The bottom of the turnover bag is provided with a dropping port for dropping the material to the corresponding feeding end, and a lifting height controller is provided between the lifting structure and the bag loading crane.

[0013] Due to the adoption of the above technical solution, a compact mixing and dispensing machine is used to mix zinc oxide in different turnover bags, including a frame and a mixing device fixedly arranged relative to the frame, the mixing device is provided with a mixing feed hopper, a star-shaped feeding device is installed on the frame above the mixing feed hopper, and the discharge end of the star-shaped feeding device is flange-connected to the mixing feed hopper; a spiral feeding device is provided on the frame at the side of the mixing feed hopper, and the discharge end of the spiral feeding device extends into the mixing feed hopper; a bagging device is provided on the frame for providing turnover bags to the feed end of the star-shaped feeding device and the feed end of the spiral feeding device respectively. The utility model forms one feeding path with a star-shaped feeding device above the mixing feed hopper, which can significantly reduce the floor space, and another feeding path adopts a spiral feeding device, and the distance between the two feed ends is stretched by the lateral length of the spiral feeding device, so that there can be enough turnover bag space at each feed end. Therefore, the utility model is arranged in a straight line on the ground projection, with a compact structure and a small footprint. The star-shaped feeding device is a feeding method of rotating and falling, without pushing or squeezing, and the length of the spiral feeding device only needs to meet the requirement that the distance between the two feeding ends is greater than the width of a turnover bag. The spiral feeding device is short in length, and there is less pushing and squeezing during the feeding process. Therefore, the utility model is less affected by agglomeration, and zinc oxide can enter the mixing feed hopper in a powder state, which is conducive to improving the mixing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0016] Figure 2 yes Figure 1 A schematic diagram of a top view structure;

[0017] Figure 3 It is a schematic diagram of the turnover area of ​​an embodiment of the utility model in the direction of the straight line projection on the ground.

[0018] In the figure: 1-frame; 2-mixing device; 21-mixing feed hopper; 3-star-shaped feeding device; 31-cylindrical shell; 32-star-shaped feeding port; 33-star-shaped discharging port; 34-star-shaped feeding hopper; 35-star-shaped shaft; 36-star-shaped blades; 37-star-shaped feeding motor; 4-first vibrator; 5-screw feeding device; 51-feeding avoidance port; 6-bagging device; 61-bagging crane; 62-hanging structure; 63-hanging height controller; 7-turnover bag; 71-dropping port; 8-turnover area. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0020] like Figure 1 As shown, the compact mixing and blending machine is used to mix the zinc oxide in different turnover bags 7, such as blending zinc oxide with different zinc oxide contents into mixed zinc oxide with a required zinc oxide content or above, and blending zinc oxide with different lead contents into mixed zinc oxide with a required lead content, etc. Of course, the index of zinc oxide in different turnover bags 7 should be above and below the required index, respectively, to achieve the purpose of blending. For example, if the lead content index of the required mixed zinc oxide is lower than 500ppm, a mixed zinc oxide with a lead content of 100ppm and 800ppm can be formed in a 1:1 ratio, which is lower than the index of 500ppm. The purpose of the mixing and blending is to use low-index zinc oxide to mix with high-index zinc oxide, so as to reduce the production cost while meeting the index requirements of the final mixed zinc oxide, and to achieve the purpose of resource allocation and utilization of the zinc oxide with various indexes produced.

[0021] This embodiment includes a frame 1 and a mixing device 2 fixedly arranged relative to the frame 1. The mixing device 2 is a prior art known to those skilled in the art and will not be described in detail herein and is not fully illustrated in the drawings.

[0022] The mixing device 2 is provided with a mixing hopper 21, and a star-shaped feeding device 3 is installed on the frame 1 above the mixing hopper 21, and the discharge end of the star-shaped feeding device 3 is flange-connected to the mixing hopper 21. Thus, the mixing device 2 utilizes the space above the mixing hopper 21 to form a one-way feeding with the star-shaped feeding device 3, which can significantly reduce the floor space. The star-shaped feeding device 3 is a feeding method of turning and falling, without pushing and squeezing, and is less affected by agglomeration; and the star-shaped feeding device 3 is directly flange-connected to the mixing hopper 21, so that the mixed feeding forms a closed environment, which is conducive to reducing dust.

[0023] Among them, the star-shaped feeding device 3 includes a laterally arranged cylindrical outer shell 31, a star-shaped feed port 32 is opened on the top of the cylindrical outer shell 31 and a star-shaped discharge port 33 is opened on the bottom, a star-shaped feed hopper 34 is arranged on the star-shaped feed port 32, and the star-shaped discharge port 33 is flange-connected to the mixing feed hopper 21; a concentrically arranged star shaft 35 is rotatably mounted on the cylindrical outer shell 31, a plurality of star-shaped blades 36 are fixedly arranged on the outer circumferential surface of the star shaft 35, and one end of the star shaft 35 extending out of the cylindrical outer shell 31 is connected to a star-shaped feeding motor 37. A material pocket space is formed between two adjacent star-shaped blades 36. After the star-shaped feeding motor 37 drives the star-shaped shaft 35 to rotate, when the material pocket space reaches the star-shaped feeding port 32, zinc oxide can fall into the material pocket space. After the material pocket space rotates to the star-shaped discharge port 33, zinc oxide freely falls from the star-shaped discharge port 33 into the mixing feed hopper 21 to form feeding. Preferably, the star-shaped feeding motor 37 adopts a variable frequency motor to facilitate the control of the feeding speed, which is conducive to adaptive use for different mixing ratios.

[0024] Preferably, the star-shaped feeding device 3 is equipped with a first vibrator 4, which facilitates the zinc oxide at the star-shaped feeding hopper 34 to smoothly enter the material pocket space through vibration, and facilitates the zinc oxide to smoothly fall out after the material pocket space reaches the star-shaped discharge port 33, significantly reducing the effect of zinc oxide viscosity on feeding. Based on the flange connection between the star-shaped feeding device 3 and the mixing feeding hopper 21, the vibration can also be transmitted to the mixing feeding hopper 21, so that the mixing feeding hopper 21 can also smoothly feed into the mixing device 2, avoiding the adhesion of zinc oxide.

[0025] A spiral feeding device 5 is provided on the frame 1 at the side of the mixing feed hopper 21, and the discharge end of the spiral feeding device 5 is extended into the mixing feed hopper 21. In this embodiment, the spiral feeding device 5 is used for another feeding route, and the distance between the feeding ends of the two feeding devices is stretched by the lateral length of the spiral feeding device 5, so that there is enough space for the turnover bag 7 at each feeding end. Based on this, the length of the spiral feeding device 5 only needs to satisfy that the distance between the feeding ends of the two feeding devices is greater than the width of a turnover bag 7, so the length of the spiral feeding device 5 is also small, the pushing and squeezing in the feeding process is less, and the influence of agglomeration is also less.

[0026] Preferably, the discharge end of the star-shaped feeding device 3 is arranged on the side of the mixing feed hopper 21 away from the discharge end of the spiral feeding device 5. Therefore, the mixing feed hopper 21 of this embodiment occupies part of the distance between the two feeding ends, so that the length of the spiral feeding device 5 is further reduced, the pushing and squeezing inside it is further reduced, and the agglomeration effect is further reduced.

[0027] Preferably, a second vibrator is installed on the spiral feeding device 5 to facilitate the zinc oxide at the feeding end of the spiral feeding device 5 to smoothly enter the spiral feeding device 5 and realize its smooth feeding. The second vibrator can be installed at the feeding end of the spiral feeding device 5, which is easily obtained by those skilled in the art in combination with conventional technical means, so the second vibrator is not shown in the figure. Preferably, a feeding avoidance port 51 corresponding to the spiral feeding device 5 is provided on the side wall of the mixing feeding hopper 21, and a clearance fit is provided between the feeding avoidance port 51 and the spiral feeding device 5, and a flexible dustproof structure is provided between the feeding avoidance port 51 and the spiral feeding device 5. Through clearance fit and flexible contact, while avoiding dust, the vibration at the spiral feeding device 5 is prevented from affecting the mixing feeding hopper 21, thereby avoiding resonance with the vibration of the first vibrator 4 and affecting the normal operation of the equipment. The flexible dustproof structure may be implemented in the form of a flexible cloth fixed at the feeding avoidance port 51 or a flexible cloth wrapped around the outside of the spiral feeding device 5, etc., which is not limited here and is not shown in the figure.

[0028] The frame 1 is provided with a bag loading device 6 for providing turnover bags 7 to the feeding ends of the star-shaped feeding device 3 and the spiral feeding device 5, respectively. The turnover bags 7 are placed from the turnover area 8 to the feeding ends of the corresponding feeding devices through the bag loading device 6, and the zinc oxide in the bag can fall into the corresponding feeding devices through the drop opening 71 opened at the bottom of the turnover bag 7. The bag loading device 6 includes a bag loading crane 61 installed laterally and movably on the frame 1, and a hanging structure 62 for hanging the turnover bag 7 is installed on the bag loading crane 61. The bottom of the turnover bag 7 is provided with a drop opening 71 for dropping the material to the corresponding feeding end, and a hanging height controller 63 is provided between the hanging structure 62 and the bag loading crane 61.

[0029] The bag loading device 6 is moved to the turnover area 8 by means of the bag loading crane 61, and the hanging height controller 63 is used to lower the hanging structure 62 to a height that can hook the turnover bag 7, and then the hanging height controller 63 drives the hanging structure 62 to rise, and the turnover bag 7 is lifted, and the bag loading crane 61 is moved to the top of the feed end of the designated feeding device, and the hanging height controller 63 drives the hanging structure 62 to descend, and the turnover bag 7 is placed on the feed end of the corresponding feeding device; of course, before the turnover bag 7 is completely placed on the feed end, the descent of the hanging structure 62 is first paused, and the drop port 71 of the turnover bag 7 is released, so that after the turnover bag 7 is completely placed on the corresponding feed end, it can form a temporary storage structure for zinc oxide together with the feed end. The above bag loading structure principle is a well-known technology that can be known to those skilled in the art, and will not be repeated here.

[0030] In this embodiment, a star-shaped feeding device 3 is used above the mixing feed hopper 21 to form one feeding path, and a spiral feeding device 5 is used for the other feeding path. The overall arrangement is in a straight line when projected on the ground, as shown in FIG. Figure 2 and Figure 3 As shown, the structure is compact and occupies a small area. The turnover area 8 for providing turnover bags 7 can be set up in a certain place according to the site conditions. Figure 2 The side of the ground projection line shown, or set at Figure 3 In the straight line direction of the ground projection shown, or one turnover area 8 is in the straight line direction of the ground projection, and the other turnover area 8 is on the side of the straight line of the ground projection, which is not limited in this embodiment. In this embodiment, the star-shaped feeding device 3 does not have any pushing, the length of the spiral feeding device 5 is short, and the pushing and squeezing is also less, the overall agglomeration is less affected, and the zinc oxide can enter the mixing feed hopper 21 in the form of powder, which is conducive to improving the mixing accuracy.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A compact mixing and dispensing machine for mixing zinc oxide in different turnover bags, comprising a frame and a mixing device fixedly arranged relative to the frame, characterized in that: The mixing device is provided with a mixing feed hopper, and a star-shaped feeding device is installed on the frame above the mixing feed hopper, and the discharge end of the star-shaped feeding device is flange-connected to the mixing feed hopper; a spiral feeding device is provided on the frame at the side of the mixing feed hopper, and the discharge end of the spiral feeding device extends into the mixing feed hopper; a bagging device is provided on the frame for providing turnover bags to the feed ends of the star-shaped feeding device and the feed ends of the spiral feeding device respectively.

2. The compact mixing and blending machine according to claim 1, characterized in that: A feeding avoidance port corresponding to the spiral feeding device is provided on the side wall of the mixing feed hopper, a clearance fit is provided between the feeding avoidance port and the spiral feeding device, and a flexible dustproof structure is provided between the feeding avoidance port and the spiral feeding device.

3. The compact mixing and blending machine according to claim 1, characterized in that: The discharge end of the star-shaped feeding device is arranged at a side of the mixing feed hopper away from the discharge end of the spiral feeding device.

4. The compact mixing and blending machine according to claim 1, characterized in that: The star-shaped feeding device is provided with a first vibrator.

5. The compact mixing and blending machine according to claim 1, characterized in that: A second vibrator is installed on the spiral feeding device.

6. The compact mixing and blending machine according to claim 1, characterized in that: The star-shaped feeding device includes a laterally arranged cylindrical shell, a star-shaped feed port is provided on the top of the cylindrical shell and a star-shaped discharge port is provided on the bottom, a star-shaped feed hopper is provided on the star-shaped feed port, and the star-shaped discharge port is flange-connected to the mixing feed hopper; a concentrically arranged star shaft is rotatably mounted on the cylindrical shell, a plurality of star-shaped blades are fixedly provided on the outer circumferential surface of the star shaft, and one end of the star shaft extending out of the cylindrical shell is connected to a star-shaped feeding motor.

7. The compact mixing and blending machine according to claim 1, characterized in that: The bag loading device includes a bag loading crane which is installed laterally and movably on the frame, and a lifting structure for lifting the turnover bag is installed on the bag loading crane. A dropping port for dropping the turnover bag to the corresponding feeding end is provided at the bottom of the turnover bag, and a lifting height controller is provided between the lifting structure and the bag loading crane.

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