Concrete mixing equipment

Abstract

The invention provides concrete mixing equipment, and relates to the technical field of concrete production, the concrete mixing equipment comprises a mixing tank, an exhaust pipe, a self-cleaning raised dust filtering structure and a raised dust shielding structure, and the raised dust shielding structure comprises a first annular flange, a second annular flange, a third annular flange, a connecting rod, a knocking adhesion removing structure and a vibration motor; a raised dust shielding structure is arranged at an exhaust pipe of the mixing tank and is used for filtering dust carried in exhausted gas, and a filtering part is self-cleaned in the batching process; through a first annular flange, a second annular flange and a third annular flange which are arranged in multiple layers of the raised dust shielding structure, raised dust rising along the periphery of the inner wall of the mixing tank is shielded step by step, the content of dust in gas exhausted by the exhaust pipe is reduced, the working intensity of filtering of the self-cleaning raised dust filtering structure is reduced, and the service life of the self-cleaning raised dust filtering structure is prolonged. And dust can be continuously filtered under self-cleaning cooperation, dust overflowing is avoided, and the environment-friendly effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete production, and more particularly to a concrete mixing device. Background Art

[0002] The descriptions in this section only provide background information related to the present disclosure and do not constitute prior art.

[0003] During the concrete production process, it is necessary to dry-mix a variety of powdery ingredients to obtain finished concrete powder, and a mixing device is usually used in the mixing process.

[0004] Existing mixing devices will cause dust to rise during the mixing process, and these dusts discharged from the device exhaust holes will damage the surrounding working environment and cause environmental pollution. Summary of the Invention

[0005] The purpose of the present invention is to provide a concrete mixing device, which has the advantages of continuously filtering dust and avoiding dust spillage, and solves the technical problem that existing mixing devices will cause dust to rise during the mixing process, and these dusts discharged from the device exhaust holes will damage the surrounding working environment and cause environmental pollution.

[0006] The present invention provides a concrete mixing device, including:

[0007] A mixing tank, the top edge of which is fixedly connected with an exhaust pipe, and a self-cleaning dust filtering structure is assembled on the exhaust pipe;

[0008] A dust shielding structure is assembled on the inner wall of the mixing tank, which includes:

[0009] A first annular rib, a second annular rib and a third annular rib, the outer ends of which are fixedly assembled with connecting rods on the circumference;

[0010] The outer ends of the first annular rib, the second annular rib and the third annular rib are fixedly assembled on the inner wall of the mixing tank from bottom to top through the corresponding connecting rods;

[0011] The inner ends of the first annular rib, the second annular rib and the third annular rib are inclined upward, and the inclination angles are the same;

[0012] The lengths of the first annular rib, the second annular rib and the third annular rib increase in sequence, and a knocking and de-adhesion structure is provided inside all of them;

[0013] Vibration motors are uniformly fixedly assembled on the outer wall of the mixing tank.

[0014] As a further optimization solution, in order to make the surface of the annular baffle not easily adhere to dust and the dust adhered to the surface of the annular edge can be removed by vibration, the structures of the first annular edge, the second annular edge and the third annular edge are the same;

[0015] The first annular edge includes:

[0016] A steel baffle main body with a wear-resistant ceramic coating on its outer wall;

[0017] The knocking and de-adhesion structure is evenly arranged inside the steel baffle main body.

[0018] As a further optimization solution, in order to convert the vibration transmitted by the knocking and de-adhesion structure into a higher-frequency knock when the vibration motor vibrates the mixing tank, and better remove the dust adhered to the outer wall of the steel baffle main body, the knocking and de-adhesion structure includes:

[0019] An installation groove opened on the upper surface of the steel baffle main body;

[0020] A spring is inserted into the installation groove, and steel blocks are respectively fixedly connected to both ends thereof;

[0021] A cover plate is welded at the top opening of the installation groove.

[0022] As a further optimization solution, in order to better block the dust near the inside of the mixing tank during the mixing process and reduce the dust content in the exhaust gas, the inner ends of the first annular edge, the second annular edge and the third annular edge are inclined upward at an angle of 30° - 60°.

[0023] As a further optimization solution, in order to supply the powdered raw materials fed in from the circumferential direction at the upper end of the mixing tank through the air flow, the fed raw materials are blown obliquely downward under the entrainment of the wind and finally meet and convect in the middle of the inner cavity of the mixing tank. Under the action of the subsequent intake air, the convected and scattered air flow continues to flow downward to the lower end of the inner cavity of the mixing tank, and pre-mixing is carried out before stirring the raw materials to improve the stirring and mixing efficiency. The upper end circumference of the mixing tank is fixedly communicated with an air flow spraying mechanism, which includes:

[0024] A first intake pipe provided with a first valve;

[0025] The first intake pipe is fixedly communicated with the outer wall at the upper end of the mixing tank, and a bent section is integrally formed at the inner end of the first intake pipe;

[0026] The inner end of the bent section is inclined downward at 45°;

[0027] A feed pipe is fixedly communicated with the first intake pipe and is located between the first valve and the outer wall of the mixing tank.

[0028] As a further optimization solution, in order to filter the dust in the gas discharged from the exhaust pipe and perform self-cleaning during the batching process, and make the cleaned dust fall back into the mixing tank to avoid waste of raw materials, the self-cleaning dust filtering structure includes:

[0029] A wire mesh plate, with an outer ring fixed to its outer edge, and the outer ring is fixedly connected to the upper edge of the exhaust pipe by bolts;

[0030] A filter plate is inserted into the upper end of the exhaust pipe, and a connecting ring is fixedly sleeved on its outer wall;

[0031] The connecting ring is fixedly connected to the inner side end of the bolt screwed on the outer wall of the exhaust pipe;

[0032] A micro motor is fixedly assembled in the middle of the top surface of the wire mesh plate, and a first round rod is fixedly connected to its lower end through the wire mesh plate;

[0033] The lower end of the first round rod penetrates through the left and right side walls of the filter plate and is fixedly assembled with a horizontal strip plate;

[0034] Brush hairs are uniformly pasted and fixed on the upper surface of the horizontal strip plate, and the upper ends of the brush hairs are in contact with the bottom surface of the filter plate.

[0035] As a further optimization solution, in order to form a convection when the air flow supplied dispersedly from the top meets the reverse flow of the air flow sprayed by the air flow spraying mechanism in the middle of the inner cavity of the mixing tank, use the descending air flow to partially offset the reverse flow, reduce the reverse flow intensity, and thus reduce the amount of dust flying, a ring-shaped air flow pipeline is fixedly assembled in the middle of the top surface of the mixing tank, and it includes:

[0036] An annular pipe, which is fixedly assembled in the middle of the top surface of the mixing tank;

[0037] A second air inlet pipe is fixedly communicated with the outer wall of the annular pipe, and a second valve is arranged on it;

[0038] Longitudinal pipes are uniformly and fixedly communicated with the bottom surface of the annular pipe, and their lower ends penetrate through the top surface of the mixing tank and extend to the upper end of the inner cavity of the mixing tank.

[0039] As a further optimization solution, in order to stir and mix the concrete production batching in a relatively airtight mixing tank, the mixing tank includes:

[0040] A tank body, with an open upper end, and a top cover is welded at the open upper end of the tank body;

[0041] The exhaust pipe is integrally and fixedly communicated with the edge of the top surface of the top cover;

[0042] A stirring member is fixedly assembled in the middle of the top surface of the top cover, and its lower end extends to the lower end of the inner cavity of the tank body;

[0043] Vibration motors are uniformly fixedly assembled on the side wall of the tank body;

[0044] The lower end of the tank body is an arc-shaped cover, and a valve-equipped discharge pipe is integrally and fixedly connected to the middle of the bottom surface of the arc-shaped cover.

[0045] As a further optimization scheme, in order to cooperate with the mixing tank to stir and mix the incoming concrete production ingredients,

[0046] The mixing member includes:

[0047] A driving motor, which is fixedly assembled in the middle of the top surface of the top cover;

[0048] The lower end of the output of the driving motor penetrates through the top cover and is fixedly connected to a second round rod;

[0049] Stirring blades are evenly and fixedly assembled in the middle and below the outer wall of the second round rod.

[0050] As a further optimization scheme, in order to stably support the device, legs are evenly and fixedly assembled at the edge of the bottom surface of the mixing tank, and their lower ends are abutted against the ground.

[0051] The present invention provides a concrete mixing device through improvement. Compared with the prior art, it has the following improvements and advantages:

[0052] First, a mixing tank is used to mix the concrete ingredients, and the air flow brought in by the feed is discharged through the exhaust pipe. A dust-blocking structure is arranged at the exhaust pipe to filter the dust carried in the discharged gas. During the batching process, the filtering component is self-cleaned, and the fallen dust falls back into the mixing tank; through the first annular baffle, the second annular baffle and the third annular baffle arranged in multiple layers of the dust-blocking structure, the inner ends of the three-layer annular baffles are inclined upward, and the lengths increase in sequence, so as to gradually block the rising dust along the inner wall of the mixing tank, reduce the dust content in the gas discharged from the exhaust pipe, reduce the working intensity of filtering by the self-cleaning type dust-filtering structure, and continuously filter the dust under its self-cleaning cooperation, avoiding the dust from overflowing into the surrounding environment and realizing the environmental protection function.

[0053] Second, the mixing tank is vibrated by a vibration motor, and the vibration is transmitted to the first annular baffle, the second annular baffle and the third annular baffle. Under the action of inertia, the knocking and adhesion-removing structure inside the annular baffle converts the vibration into high-frequency knocking on the annular baffle. The above measures effectively shake off the dust adhering to the annular baffle and the inner wall of the mixing tank, avoiding the influence of the use of the annular baffle on the concrete ingredients and avoiding the waste of raw materials. Description of the Drawings

[0054] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0055] Figure 1 Structural schematic diagram of the present invention;

[0056] Figure 2 Schematic sectional view of the structure of the mixing tank of the present invention;

[0057] Figure 3 Structural schematic diagram at the dust shielding structure of the present invention;

[0058] Figure 4 Schematic sectional view of the structure of the first annular baffle of the present invention;

[0059] Figure 5 Structural schematic diagram of the air flow spraying mechanism of the present invention;

[0060] Figure 6 Schematic sectional view of the structure at the self-cleaning dust filtering structure of the present invention;

[0061] Figure 7 Structural schematic diagram of the annular air flow pipeline of the present invention;

[0062] Figure 8 Structural schematic diagram of the stirring member of the present invention.

[0063] Explanation of reference numerals:

[0064] 1 - mixing tank, 11 - tank body, 12 - arc-shaped cover, 13 - top cover, 14 - valve-equipped discharge pipe, 2 - air flow spraying mechanism, 21 - first intake pipe, 22 - bent section, 23 - first valve, 24 - feed pipe, 3 - stirring member, 31 - drive motor, 32 - second round rod, 33 - stirring blade, 4 - annular air flow pipeline, 41 - annular pipe, 42 - longitudinal pipe, 43 - second intake pipe, 44 - second valve, 5 - self-cleaning dust filtering structure, 51 - mesh plate, 52 - micro motor, 53 - first round rod, 54 - horizontal strip plate, 55 - connecting ring, 56 - filter plate, 6 - vibration motor, 7 - dust shielding structure, 71 - first annular baffle, 711 - steel baffle main body, 712 - wear-resistant ceramic coating, 713 - knocking and adhesion removal structure, 7131 - installation groove, 7132 - spring, 7133 - steel block, 72 - second annular baffle, 73 - third annular baffle, 74 - connecting rod, 8 - support leg, 9 - exhaust pipe. Specific embodiments

[0065] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 thus should not be construed as a limitation to the present invention.

[0067] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined. In addition, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] Please refer to Figure 1-8 , the present invention provides a technical solution: a concrete mixing device, including:

[0069] A mixing tank 1, the top edge of which is fixedly communicated with an exhaust pipe 9, and a self-cleaning dust filtering structure 5 is assembled on the exhaust pipe 9;

[0070] A dust shielding structure 7 is assembled on the inner wall of the mixing tank 1, which includes:

[0071] A first annular rib 71, a second annular rib 72 and a third annular rib 73, the outer ends of which are fixedly assembled with connecting rods 74 in a circumferential manner;

[0072] The outer ends of the first annular baffle 71, the second annular baffle 72, and the third annular baffle 73 are fixedly assembled to the inner wall of the mixing tank 1 from bottom to top through corresponding connecting rods 74;

[0073] The inner ends of the first annular baffle 71, the second annular baffle 72, and the third annular baffle 73 are inclined upward, and the inclination angles are the same;

[0074] The lengths of the first annular baffle 71, the second annular baffle 72, and the third annular baffle 73 increase in sequence, and a knocking and anti-adhesion structure 713 is provided inside each of them;

[0075] Vibration motors 6 are uniformly and fixedly assembled on the outer wall of the mixing tank 1.

[0076] Specifically in this embodiment, the mixing tank 1 is a stirring tank with a stirring function using the prior art, and the air flow carried during feeding is discharged from the exhaust pipe 9;

[0077] Furthermore, a self-cleaning dust-filtering structure 5 is provided at the exhaust pipe 9 to filter the dust carried in the discharged gas, and the filtering component is self-cleaned during the batching process, and the fallen dust falls back into the mixing tank 1;

[0078] Through the first annular baffle 71, the second annular baffle 72, and the third annular baffle 73 arranged in multiple layers by the dust-blocking structure 7, the inner ends of the three-layer annular baffles are inclined upward and the lengths increase in sequence, so as to gradually block the rising dust along the inner wall periphery of the mixing tank 1, reduce the dust content in the gas discharged from the exhaust pipe 9, reduce the working intensity of the self-cleaning dust-filtering structure 5 for filtering, and can continuously filter the dust under its self-cleaning cooperation, avoiding the dust from overflowing into the surrounding environment and realizing the environmental protection function;

[0079] More specifically, the mixing tank 1 is vibrated by the vibration motor 6, and the vibration is transmitted to the first annular baffle 71, the second annular baffle 72, and the third annular baffle 73. Under the action of inertia, the knocking and anti-adhesion structure 713 inside the annular baffle converts the vibration into high-frequency knocking on the annular baffle. In this embodiment, the knocking and anti-adhesion structure 713 is evenly distributed inside the first annular baffle 71, the second annular baffle 72, and the third annular baffle 73. The above measures effectively shake off the dust adhering to the annular baffle and the inner wall of the mixing tank 1, avoid the use of the annular baffle from affecting the concrete batching, and avoid the waste of raw materials;

[0080] It can be understood that this device can also be used for the batching of other powdery products.

[0081] In some embodiments, the structures of the first annular baffle 71, the second annular baffle 72, and the third annular baffle 73 are the same;

[0082] The first annular baffle 71 includes:

[0083] A steel retaining edge body 711, with a wear-resistant ceramic coating 712 provided on its outer wall;

[0084] The knocking anti-adhesion structure 713 is evenly arranged inside the steel retaining edge body 711.

[0085] Specifically in this embodiment, the wear-resistant ceramic coating is an existing technology application. After being coated and cured, it forms the wear-resistant ceramic coating 712, which improves the wear resistance of the steel retaining edge body 711, reduces the adhesion coefficient of the steel retaining edge body 711, and decreases the amount of dust adhesion;

[0086] Furthermore, the knocking anti-adhesion structure 713 is used in cooperation with the vibration motor 6 fixed to the side wall of the mixing tank 1. The power of the knocking anti-adhesion structure 713 comes from the vibration of the vibration motor 6 transmitted by the mixing tank 1.

[0087] In some embodiments, the knocking anti-adhesion structure 713 includes:

[0088] An installation groove 7131, which is opened on the upper surface of the steel retaining edge body 711;

[0089] A spring 7132 is inserted into the installation groove 7131, and steel blocks 7133 are fixedly connected to both ends thereof;

[0090] A cover plate is welded at the top opening of the installation groove 7131.

[0091] Specifically in this embodiment, the spring 7132 is compressed by a part by the upper steel block 7133, and most of the remaining compressible amount of the spring 7132 is available. At this time, the two steel blocks 7133 are attached to the same side of the inner wall of the installation groove 7131;

[0092] Furthermore, the spring 7132 and the steel blocks 7133 at both ends are welded before being placed into the installation groove 7131. After the three are welded, they are placed into the installation groove 7131, and then a cover plate is welded at the top opening of the installation groove 7131 for sealing;

[0093] The specific working principle is as follows: After the vibration is transmitted to the knocking anti-adhesion structure 713, the installation groove 7131 moves along with the steel block 7133. Due to inertia, the two steel blocks 7133 tend to maintain their original states. The component force in the vibration direction is along the axis of the spring 7132. Relative movement will occur between the two steel blocks 7133 and the inner wall of the installation groove 7131, causing the spring 7132 to be compressed or stretched, driving the two steel blocks 7133 to impact the inner wall of the installation groove 7131. At the same time, due to the small size of the installation groove 7131, the two steel blocks 7133 can impact the inner wall of the installation groove 7131 multiple times within each vibration cycle of the vibration motor 6, achieving high-frequency knocking. The high-frequency knocking vibration can more effectively shake off the dust on the surface of the steel retaining edge body 711;

[0094] Furthermore, the steel retaining edge body 711 is specifically made of high-strength alloy steel to improve mechanical strength, ensuring long-term use under the high-frequency knocking of the steel blocks 7133 on both sides. The connecting rods 74 at the outer ends of the first annular retaining edge 71, the second annular retaining edge 72, and the third annular retaining edge 73 are all made of steel, and the relatively large number of circumferentially distributed connecting rods 74 are welded to the inner wall of the mixing tank 1 at the lower ends, which is sufficient to ensure the support stability;

[0095] More specifically, the gaps between the outer ends of the first annular retaining edge 71, the second annular retaining edge 72, and the third annular retaining edge 73 and the inner wall of the mixing tank 1 are discharge gaps for discharging the powder falling on the surface of the annular retaining edge downward;

[0096] It can be understood that the stiffness of the spring 7132 is small and it can be compressed and stretched by the steel block 7133.

[0097] In some embodiments, the inner ends of the first annular retaining edge 71, the second annular retaining edge 72, and the third annular retaining edge 73 are inclined upward at an angle of 30° - 60°.

[0098] Specifically in this embodiment, the inner ends of the first annular retaining edge 71, the second annular retaining edge 72, and the third annular retaining edge 73 are inclined upward at an angle of 45 degrees. This inclined angle forms a diversion slope, which can not only effectively block the backflow of dust, but also guide the material to fall back into the stirring area.

[0099] In some embodiments, an air flow spraying mechanism 2 is fixedly connected to the upper circumference of the mixing tank 1, which includes:

[0100] A first air inlet pipe 21, on which a first valve 23 is provided;

[0101] The first air inlet pipe 21 is fixedly connected to the outer wall of the upper end of the mixing tank 1, and a bent section 22 is integrally formed at the inner end of the first air inlet pipe 21;

[0102] The inner end of the bent section 22 is inclined downward at 45°;

[0103] A feed pipe 24 is fixedly connected to the first air inlet pipe 21, and it is located between the first valve 23 and the outer wall of the mixing tank 1.

[0104] Specifically in this embodiment, the first air inlet pipe 21 is connected to an external air source, and the air source intensity is suitable for the feeding of powder materials. Options can be selected according to requirements. In this embodiment, the external air source is provided by a blower;

[0105] Further, the powder material is input through the feed pipe 24, and the supplied powdery raw materials are respectively fed into the upper end circumference of the mixing tank 1 through the air flow. The fed raw materials are blown obliquely downward along the bent section 22 under the entrainment of the wind force and finally meet and convect in the middle of the inner cavity of the mixing tank 1. Under the action of the subsequent intake air, the convected and scattered air flow continues to flow downward to the lower end of the inner cavity of the mixing tank 1, and pre-mixing is carried out before stirring the raw materials, so as to improve the stirring and mixing efficiency;

[0106] It can be understood that after the feeding is completed, the external air source is cut off, the first intake pipe 21 is closed, and the upper end of the feed pipe 24 is blocked. In this embodiment, the feed pipe 24 is blocked by a plug block to avoid dust leakage.

[0107] In some embodiments, the self-cleaning dust filtering structure 5 includes:

[0108] A net plate 51, the outer edge of which is fixed with an outer ring, and the outer ring is fixedly connected to the upper edge of the exhaust pipe 9 through bolts;

[0109] A filter plate 56 is inserted into the upper end of the exhaust pipe 9, and a connecting ring 55 is fixedly sleeved on its outer wall;

[0110] The connecting ring 55 is fixedly connected to the inner side end of the bolt screwed on the outer wall of the exhaust pipe 9;

[0111] A micro motor 52 is fixedly assembled in the middle of the top surface of the net plate 51, and a first round rod 53 is fixedly connected to the lower end thereof through the net plate 51;

[0112] The lower end of the first round rod 53 penetrates through the left and right side walls of the filter plate 56 and is fixedly assembled with a transverse strip plate 54;

[0113] Brush hairs are uniformly pasted and fixed on the upper surface of the transverse strip plate 54, and the upper ends of the brush hairs are attached to the bottom surface of the filter plate 56.

[0114] Specifically in this embodiment, the filter plate 56 is a ceramic filter element, which is a hard material with good wear resistance and better cooperates with the cleaning of the brush hairs;

[0115] Further, the micro motor 52 is connected to an external power source. When it works, it drives the first round rod 53, the transverse strip plate 54 and the brush hairs to rotate. The brush hairs directly clean the bottom surface of the filter plate 56, and the fallen dust falls back into the mixing tank 1;

[0116] It can be understood that the net plate 51 and its outer ring are detachably fixed by bolts, and the connecting ring 55 is detachably fixed by bolts, which is convenient for overhauling and replacing the filter plate 56 and the micro motor 52; the micro motor 52 is specifically a dust-proof motor.

[0117] In some embodiments, a ring-shaped air flow pipeline 4 is fixedly assembled in the middle of the top surface of the mixing tank 1, and it includes:

[0118] The annular pipe 41 is fixedly assembled in the middle of the top surface of the mixing tank 1;

[0119] The outer wall of the annular pipe 41 is fixedly connected and communicated with a second air inlet pipe 43, on which a second valve 44 is provided;

[0120] The bottom surface of the annular pipe 41 is uniformly fixedly connected and communicated with longitudinal pipes 42, and the lower ends thereof penetrate through the top surface of the mixing tank 1 and extend to the upper end of the inner cavity of the mixing tank 1.

[0121] Specifically, in this embodiment, the second air inlet pipe 43 is connected to an external air source, and the air source in this embodiment is a blower;

[0122] Further, the air inlet of the second air inlet pipe 43 passes through the annular pipe 41 and then sprays out from the longitudinal pipes 42. The air flow supplied dispersedly from the top and the air flow sprayed by the air flow spraying mechanism 2 blow on the bottom surface of the inner cavity of the mixing tank 1 and meet in the middle of the inner cavity of the mixing tank 1 to form a convection. The downward air flow partially offsets the reverse flow, reduces the reverse flow intensity, and further reduces the amount of dust flying.

[0123] It can be understood that the second valve 44 on the second air inlet pipe 43 is closed when the annular air flow pipeline 4 is not in use to prevent dust from overflowing.

[0124] In some embodiments, the mixing tank 1 includes:

[0125] The tank body 11 has an open upper end, and a top cover 13 is welded at the open upper end of the tank body 11;

[0126] The exhaust pipe 9 is integrally and fixedly connected and communicated with the edge of the top surface of the top cover 13;

[0127] A stirring member 3 is fixedly assembled in the middle of the top surface of the top cover 13, and its lower end extends to the lower end of the inner cavity of the tank body 11;

[0128] The vibration motors 6 are uniformly fixedly assembled on the side wall of the tank body 11;

[0129] The lower end of the tank body 11 is an arc-shaped cover 12, and a valve-equipped discharge pipe 14 is integrally and fixedly connected and communicated with the middle of the bottom surface of the arc-shaped cover 12.

[0130] Specifically, in this embodiment, the top cover 13 is welded last. First, the internal devices of the tank body 11 are installed, and after the stirring member 3 is arranged on the top cover 13, the top cover 13 is welded to the open upper end of the tank body 11;

[0131] Further, sealing rings are provided at the installation positions of the air flow spraying mechanism 2 and the longitudinal pipes 42 to ensure tightness; the inner wall of the reserved through hole opened on the top cover 13 corresponding to the output end of the driving motor 31 of the stirring member 3 is provided with a sealed bearing to ensure dynamic sealing at the output end of the driving motor 31;

[0132] The inner wall of the arc-shaped cover 12 is an arc-shaped concave surface, which concentrates the mixed materials towards the middle of the arc-shaped concave surface. Finally, the valve of the valve-equipped discharge pipe 14 is opened to discharge the materials, and the materials are collected. This material is the finished concrete;

[0133] It can be understood that the outer shell matrix of the mixing tank 1 is made of stainless steel, and the inner wall is provided with wear-resistant and corrosion-resistant coatings; the stirring member 3 is a part of the mixing tank 1, realizing the stirring and mixing function of the mixing tank 1 for the powder materials.

[0134] In some embodiments, the stirring member 3 includes:

[0135] A driving motor 31, which is fixedly assembled in the middle of the top surface of the top cover 13;

[0136] The lower end of the output of the driving motor 31 penetrates through the top cover 13 and is fixedly connected with a second round rod 32;

[0137] The middle and lower parts of the outer wall of the second round rod 32 are uniformly fixedly assembled with stirring blades 33. The driving motor 31 is specifically a servo motor, which works by connecting to an external power supply, driving the second round rod 32 and the stirring blades 33 to rotate to realize the stirring function.

[0138] In some embodiments, legs 8 are uniformly fixedly assembled at the edge of the bottom surface of the mixing tank 1, and their lower ends abut against the ground to stably support the device and raise the device for convenient discharging.

[0139] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A concrete mixing device, characterized in that, Comprising: A mixing tank, the top edge of which is fixedly communicated with an exhaust pipe, and a self-cleaning dust filtering structure is assembled on the exhaust pipe; A dust shielding structure is assembled on the inner wall of the mixing tank, which includes: A first annular rib, a second annular rib and a third annular rib, and connecting rods are fixedly assembled on the outer circumferences of their outer ends; The outer ends of the first annular rib, the second annular rib and the third annular rib are fixedly assembled on the inner wall of the mixing tank from bottom to top through the corresponding connecting rods; The inner ends of the first annular rib, the second annular rib and the third annular rib are inclined upward, and the inclination angles are the same; The lengths of the first annular rib, the second annular rib and the third annular rib increase in sequence, and knocking and adhesion removal structures are arranged inside all of them; Vibration motors are evenly and fixedly assembled on the outer wall of the mixing tank.

2. The concrete mixing equipment according to claim 1, characterized in that, The structures of the first annular rib, the second annular rib and the third annular rib are the same; The first annular rib includes: A steel rib main body, on the outer wall of which there is a wear-resistant ceramic coating; The knocking and adhesion removal structures are evenly arranged inside the steel rib main body.

3. A concrete mixing device according to claim 2, characterized in that, The knocking and adhesion removal structure includes: An installation groove, which is opened on the upper surface of the steel rib main body; A spring is inserted into the installation groove, and steel blocks are respectively fixedly connected to both ends of the spring; A cover plate is welded at the top opening of the installation groove.

4. A concrete mixing device according to claim 1, characterized in that, The upward inclination angle of the inner ends of the first annular rib, the second annular rib and the third annular rib is 30° - 60°.

5. A concrete mixing device according to claim 1, characterized in that, An air flow spraying mechanism is fixedly communicated with the upper circumference of the mixing tank, which includes: A first air inlet pipe, on which there is a first valve; The first air inlet pipe is fixedly communicated with the outer wall of the upper end of the mixing tank, and a bent section is integrally formed at the inner end of the first air inlet pipe; The inner end of the bent section is inclined downward at 45°; A feed pipe is fixedly communicated with the first air inlet pipe, and it is located between the first valve and the outer wall of the mixing tank.

6. A concrete mixing device according to claim 1, characterized in that, The self-cleaning dust filtering structure includes: A net plate, the outer edge of which is fixed with an outer ring, and the outer ring is fixedly connected to the upper edge of the exhaust pipe through bolts; A filter plate is inserted into the upper end of the exhaust pipe, and a connecting ring is fixedly sleeved on the outer wall of the filter plate; The connecting ring is fixedly connected to the inner end of the bolt screwed on the outer wall of the exhaust pipe; A micro motor is fixedly assembled in the middle of the top surface of the net plate, and a first round rod is fixedly connected to the lower end thereof through the net plate; The lower end of the first round rod penetrates through the left and right side walls of the filter plate and is fixedly assembled with a transverse strip plate; Brush hairs are evenly pasted and fixed on the upper surface of the transverse strip plate, and the upper ends of the brush hairs are attached to the bottom surface of the filter plate.

7. A concrete mixing device according to claim 1, characterized in that, A ring-shaped air flow pipeline is fixedly assembled in the middle of the top surface of the mixing tank, which includes: An annular pipe, which is fixedly assembled in the middle of the top surface of the mixing tank; A second air inlet pipe is fixedly communicated with the outer wall of the annular pipe, and a second valve is arranged on the second air inlet pipe; Longitudinal pipes are evenly and fixedly communicated with the bottom surface of the annular pipe, and the lower ends thereof penetrate through the top surface of the mixing tank and extend to the upper end of the inner cavity of the mixing tank.

8. A concrete mixing device according to claim 1, characterized in that, The mixing tank includes: A tank body, the upper end of which is designed with an opening, and a top cover is welded at the opening of the upper end of the tank body; The exhaust pipe is integrally and fixedly communicated with the top edge of the top cover; A stirring member is fixedly assembled in the middle of the top surface of the top cover, and the lower end thereof extends to the lower end of the inner cavity of the tank body; The vibration motors are evenly and fixedly assembled on the side wall of the tank body; The lower end of the tank body is an arc-shaped cover, and a valve-equipped discharge pipe is integrally and fixedly connected to the middle of the bottom surface of the arc-shaped cover.

9. A concrete mixing device according to claim 8, characterized in that, The mixing member includes: a driving motor fixedly assembled in the middle of the top surface of the top cover; the lower end of the output of the driving motor penetrates through the top cover and is fixedly connected to a second round rod; stirring blades are evenly and fixedly assembled in the middle and below the outer wall of the second round rod.

10. A concrete mixing device according to claim 1, characterized in that, Legs are evenly and fixedly assembled at the edge of the bottom surface of the mixing tank, and their lower ends abut against the ground.

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