An anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades.

Abstract

This invention relates to an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism on the inner wall and blades, belonging to the technical field of mixing devices. The mixing tank includes a mixing tank body and a mixing spindle disposed therein. The inner wall of the mixing tank body is provided with diaphragm I, and the inner side of its end cap is provided with diaphragm II. Diaphragms III are provided on both sides of the mixing blades of the mixing spindle. An airflow channel is provided inside the mixing tank body and the mixing spindle for introducing pulsed gas into the inner side of each diaphragm. The pulsed gas drives diaphragm I, diaphragm II, and diaphragm III to produce periodic expansion and contraction movements, thereby directly peeling off high-viscosity paste or hardened scale adhering to the inner wall, end cap, and blade surface of the tank body. This invention achieves precise and efficient cleaning without dead angles by integrating independently controllable pneumatic peeling mechanisms on each material contact surface, solving the problems of traditional coating anti-adhesion failure and overall vibration energy dispersion and damage to equipment structure, and significantly improving the anti-adhesion performance and cleaning efficiency of the mixing tank.

Description

Technical Field

[0001] This invention belongs to the technical field of stirring devices and relates to an anti-adhesion paste stirring tank with an integrated pneumatic peeling mechanism for the inner wall and blades. Background Technology

[0002] In mining and backfilling engineering, the mixing of backfill paste is a core production step. This type of backfill paste typically consists of tailings, cementitious materials, and water as its main components. It is characterized by extremely high viscosity, poor fluidity, and a large amount of solid particles (tailings, gravel, etc.). During mixing, it easily adheres to the inner wall of the mixing tank, the mixing shaft, and the surface of the mixing blades. Furthermore, the solid particles easily embed into the adhesion layer, forming a hard, sticky substance. Common industry countermeasures include using smooth special coatings or applying external vibration. Special coatings rely on reducing surface energy to decrease adhesion, but after prolonged friction with high-hardness solid particles or cleaning with a hard scraper, the coating is prone to wear and peeling off, the surface smoothness rapidly decreases, and the anti-sticking effect is drastically weakened. Overall vibration involves using a vibrator to cause periodic vibration throughout the mixing tank, aiming to shake off the adhered material.

[0003] In actual mine backfilling conditions, the cementitious materials in the backfill paste are prone to hydration reactions. Combined with solid particles, they gradually harden and scale on the inner wall of the mixing tank and the surface of the blades, forming a high-strength hard shell. At this point, relying solely on a smooth coating is insufficient to prevent the formation and thickening of the hard scale, and may even lead to more severe adhesion due to coating peeling. However, when using overall vibration, the energy is transferred to the entire tank structure. Mine backfilling mixing equipment is usually large in size and has complex pipelines. Long-term, high-frequency vibration can easily lead to loosening of equipment anchor bolts, weld fatigue, or loosening of connections with surrounding material / water supply pipelines. It may also affect the structural strength of the mixing tank, posing safety hazards. In addition, the energy generated by overall vibration is relatively dispersed. For irregular components such as mixing blades that penetrate deep into the backfill paste and need to withstand the impact of a large number of solid particles, the peeling effect of locally adhered hardened paste is often not ideal, which seriously affects the mixing uniformity and smooth conveying of the backfill paste, thereby reducing the quality of mine backfilling.

[0004] Therefore, we propose an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades to solve the problems mentioned above. Summary of the Invention

[0005] In view of this, in order to solve the above problems, the present invention provides an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades, comprising:

[0007] A mixing tank, the mixing tank comprising a bent base plate and end cover plates fixedly connected to both ends of the bent base plate;

[0008] A stirring shaft is rotatably mounted inside the stirring tank. The stirring shaft includes a connecting pipe I, a stirring blade fixedly connected to the connecting pipe I, and a connecting pipe II fixed between the two connecting pipes I.

[0009] The inner wall of the bent substrate is provided with diaphragm I, the inner side of the end cover plate is provided with diaphragm II, and the two sides of the stirring blade are provided with diaphragm III.

[0010] The mixing tank and the mixing shaft are respectively provided with airflow channels, which are used to introduce pulse gas and guide it to the inner side of diaphragm I, diaphragm II and diaphragm III respectively;

[0011] The introduced pulsed gas drives the diaphragm I, the diaphragm II, and the diaphragm III to periodically expand and contract, thereby peeling off the paste adhering to the inner wall of the mixing tank and the surface of the mixing blades.

[0012] As a further improvement to the above technical solution:

[0013] The bent substrate has a cavity I inside, and the inner wall of the bent substrate has an air hole I that communicates with the cavity I. The cavity I constitutes part of the airflow channel and is located inside the diaphragm I.

[0014] The end cover plate has a cavity II inside, and an air hole II is opened on the inner side of the end cover plate to communicate with the cavity II. The cavity II constitutes part of the airflow channel and is located inside the diaphragm II.

[0015] The connecting pipe I is a hollow pipe, forming part of the airflow channel;

[0016] The stirring blade has a cavity Ⅲ inside, and the outside of the stirring blade has an air hole Ⅲ that communicates with the cavity Ⅲ.

[0017] The cavity III communicates with the internal cavity of the connecting pipe I and is located inside the diaphragm III.

[0018] The end cover plate is fixed through the bearing housing, and one end of the connecting pipe I is rotatably connected to the bearing housing through the bearing;

[0019] The end of the connecting pipe I is connected to a rotary sealing joint, and the air inlet end of the rotary sealing joint is used to connect to an external air source.

[0020] A mesh frame is bonded to the outer side of the bent substrate, the end cover plate, and the stirring blade.

[0021] The diaphragm I, the diaphragm II, and the diaphragm III are each provided with an adhesive sealing part that is bonded to the mesh frame, and the adhesive sealing part divides each diaphragm into multiple independent elastic expansion parts.

[0022] It also includes an annular expansion cleaning assembly sleeved on the outer wall of the connecting pipe I and the connecting pipe II; The annular expansion cleaning assembly includes a fixed ring seat and at least two outer annular seats sleeved outside the fixed ring seat, and a sealed chamber is formed between the fixed ring seat and the outer annular seats; The fixed ring seat, the connecting pipe I and the connecting pipe II are all provided with through holes that connect the airflow channel to the sealed chamber; The outer annular seat has small air jet holes on its side.

[0023] A rubber sealing ring is fitted on the outer wall of the fixed ring seat, and the end of the outer ring seat is bonded to the outer wall of the rubber sealing ring;

[0024] A rubber sealing gasket is provided between adjacent outer annular seats.

[0025] It also includes the frame, drive housing, and gearbox;

[0026] The drive housing is mounted on the frame, and motor I is fixed inside it;

[0027] The gearbox is fixed to one side of the mixing tank. The output end of the motor I is connected to the input end of the gearbox, and the output end of the gearbox is connected to the mixing shaft.

[0028] The drive housing also has a motor II fixed inside. A connecting flange is rotatably provided through one side of the drive housing. The input end of the gearbox is rotatably connected to the connecting flange. The housing of the gearbox is fixedly connected to the connecting flange.

[0029] A half-tooth gear is fixedly sleeved on the outer wall of the connecting flange, and a full-tooth gear that meshes with the half-tooth gear is fixedly installed at the output end of the motor II.

[0030] The beneficial effects of this invention are as follows:

[0031] 1. The present invention discloses an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades. This system constructs a comprehensive anti-adhesion cleaning system covering the inner wall of the mixing tank, the inner side of the end cap, the mixing blades, and the outer wall of the mixing shaft. This is achieved by placing a diaphragm I inside the bent substrate of the mixing tank body, a diaphragm II inside the end cap, and diaphragms III on both sides of the mixing blades. Combined with an annular expansion cleaning assembly on the outer sides of connecting pipes I and II, the system works in conjunction with these components. The various cleaning structures work synergistically to precisely peel off adhered paste from different areas, effectively eliminating cleaning dead zones commonly found in traditional equipment. Simultaneously, diaphragms I, II, and III are made of fluororubber membranes with excellent media resistance, making them suitable for high-viscosity paste environments containing oils or chemical solvents. This prevents diaphragm swelling and aging failure, ensuring long-term stable peeling performance, significantly reducing material residue waste, and guaranteeing the purity of subsequent material mixing and batch consistency of the product.

[0032] 2. The anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades disclosed in this invention provides stable support for diaphragms I, II, and III by bonding a stainless steel wire mesh frame to the outer side of the bent substrate, end cover plate, and mixing blades, thus preventing excessive expansion and deformation of the diaphragms under gas drive. Simultaneously, the adhesive sealing part divides each diaphragm into multiple independent elastic expansion sections. When adjacent elastic expansion sections expand, they can compress and break the hardened paste in the middle, further improving peeling efficiency. This structural design ensures both the flexibility of diaphragm expansion and contraction and enhances peeling force, making the peeling of hardened paste more efficient and thorough.

[0033] 3. The anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades disclosed in this invention features an annular expansion cleaning component that, through the cooperation of a fixed ring seat, a rubber sealing ring, an outer annular seat, and a rubber sealing gasket, forms multiple independent jet zones, achieving precise and zoned cleaning of the outer walls of connecting pipe I and connecting pipe II. The outer annular seat and the fixed ring seat have openings adapted to the stirring blades, ensuring smooth assembly of the component while avoiding motion interference with the stirring blades, guaranteeing that the stirring and cleaning operations are carried out simultaneously and smoothly. Furthermore, after the gas enters the sealed chamber through the through-hole, it can both drive the outer annular seat to expand and peel off the paste, and also assist in cleaning by ejecting airflow through the jet holes, thus enhancing the paste peeling effect on the outer wall of the main shaft through a dual effect.

[0034] 4. The anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades disclosed in this invention integrates mixing and all-area anti-adhesion cleaning functions, eliminating the need for additional cleaning equipment and simplifying the production process; at the same time, it adds a tilting drive structure composed of motor II, half gear, full gear and connecting flange, so that after mixing, the mixing tank can be driven by motor II to tilt and discharge the material, replacing the traditional manual or additional conveying equipment for unloading, and greatly improving the work efficiency.

[0035] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0036] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0037] Figure 1 This is a three-dimensional structural schematic diagram of an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades according to the present invention.

[0038] Figure 2 This is a three-dimensional structural schematic diagram of an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades, according to another perspective of the present invention.

[0039] Figure 3 This is a schematic diagram of the connecting flange structure of an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades according to the present invention.

[0040] Figure 4 This is a schematic diagram of the bent substrate structure of an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades according to the present invention.

[0041] Figure 5 This is a partial cross-sectional view of the end cover plate of an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades according to the present invention.

[0042] Figure 6 This is a schematic diagram of the stirring shaft structure of an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades according to the present invention.

[0043] Figure 7 This is a schematic diagram of the installation structure of the diaphragm III and the annular expansion cleaning component of the anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades according to the present invention.

[0044] Figure 8 This is a schematic diagram of the annular expansion cleaning component of an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades according to the present invention.

[0045] Figure 9 This is a schematic diagram of the mesh frame structure of an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades according to the present invention.

[0046] Reference numerals: 1. Frame; 2. Mixing tank; 21. Bending base plate; 211. Cavity I; 212. Diaphragm I; 213. Vent I; 22. Connecting frame; 23. End cover plate; 231. Cavity II; 232. Bearing housing; 233. Vent II; 234. Diaphragm II; 24. Rotary sealing joint; 3. Drive housing; 31. Motor I; 32. Motor II; 33. Connecting flange; 34. Half gear; 35. Full gear; 4. Reduction gearbox; 5. Mixing main shaft; 51. 52. Connecting pipe I; 53. Connecting pipe II; 54. Stirring blade; 55. Cavity III; 56. Air hole III; 57. Diaphragm III; 58. Rectangular through hole; 59. Annular groove; 50. Annular expansion cleaning assembly; 51. Fixed ring seat; 52. Through hole; 53. Opening groove; 54. Rubber sealing ring; 55. Rubber sealing gasket; 566. Outer annular seat; 57. Flanged flange; 58. Air jet hole; 6. Mesh frame; 7. Adhesive sealing part; 8. Elastic expansion part. Detailed Implementation

[0047] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0048] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0049] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0050] Example 1

[0051] like Figures 1-7 As shown, an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades is mainly used in the mixing of high-viscosity paste materials in industries such as chemical, food, and pharmaceutical. It can achieve full-area anti-adhesion cleaning of the mixing tank body, mixing blades, and the outer wall of the mixing shaft, improving mixing efficiency and product quality. Its overall structure includes a frame 1, which is welded from carbon steel and has an anti-slip pad at the bottom. The anti-slip pad is fixed to the frame 1 with bolts to enhance the stability of the equipment when placed. A mixing tank 2 is bolted to one side of the frame 1, and a gearbox 4 is fixed to the other side of the mixing tank 2 via a flange structure. A drive housing 3 is bolted to the top of the frame 1. The drive housing 3 is a closed housing structure, made of welded steel plate with a rust-proof coating. A motor I 31 is fixed inside, and the motor I 31 is bolted to a mounting base inside the drive housing 3. The mounting base is welded to the inner wall of the drive housing 3. The output end of the motor I 31 is fixedly connected to the input end of the gearbox 4 via a coupling. The two ends of the coupling are fixed to the output shaft of the motor I 31 and the input shaft of the gearbox 4 via keys, respectively, to achieve stable power transmission. Both the input and output ends of the gearbox 4 are equipped with lip seals to prevent paste debris from entering the housing. The mixing tank 2 is equipped with two stirring spindles 5. The two output ends of the reduction gearbox 4 are fixedly connected to the corresponding stirring spindles 5 by key connection. The power is distributed by the meshing gear set inside the reduction gearbox 4, which drives the two stirring spindles 5 to rotate synchronously, thereby realizing the mixing of the paste.

[0052] The mixing tank 2 includes a bent base plate 21, end caps 23 fixed to both ends of the bent base plate 21, and a connecting frame 22 fixed to the outside of the bent base plate 21 and the two end caps 23. The bent base plate 21 is made of stainless steel and is formed by bending. Its curvature is designed according to the actual mixing requirements to ensure that it matches the rotation trajectory of the mixing blades 53. The end caps 23 and the bent base plate 21 are connected by bolts for sealing. Bolt holes are opened on the end caps 23, and bolt holes are also opened at the corresponding positions at both ends of the bent base plate 21. The bolts pass through the bolt holes to fix the two together. A sealing gasket is provided at the connection. The sealing gasket is embedded in the groove at the end of the bent base plate 21 to ensure the sealing of the inside of the mixing tank 2 and prevent the paste from leaking. The connecting frame 22 is welded from channel steel to form a rectangular frame structure. The connecting frame 22 is fixedly connected to the bent base plate 21 and the two end caps 23 by bolts. The bolts penetrate the channel steel wall of the connecting frame 22 and are screwed into the threaded holes on the outer side of the bent base plate 21 and the outer side of the end caps 23, respectively, to reinforce the overall structure of the mixing tank 2 and prevent deformation of the tank during mixing. A diaphragm I 212 is provided on the inner surface of the bent base plate 21. The diaphragm I 212 is made of highly elastic silicone material. The edges of the diaphragm I 212 are bonded and fixed to the inner wall of the bent base plate 21 with sealant to form a sealed chamber structure. A cavity I 211 is provided inside the bent base plate 21. The cavity I 211 is a sealed chamber formed by welding a cover plate to the outer side of the bent base plate 21. The welding joint between the cover plate and the bent base plate 21 uses a full welding process to ensure the airtightness of the chamber. The inner wall of the bent substrate 21 has vent holes I213 that communicate with the cavity I211. The vent holes I213 are evenly distributed along the inner wall of the bent substrate 21, and the inner port of the vent holes I213 is funnel-shaped to facilitate the uniform ejection of gas. The cavity I211 is connected to an external pulsed gas source through a pipe. One end of the pipe is welded to the interface on the outside of the bent substrate 21 through a connector, and the interface is connected to the cavity I211. The other end of the pipe is connected to the output end of the external pulsed gas source through a connector. The pulsed gas generated by the external pulsed gas source is introduced into the cavity I211 through the pipe and then ejected through the vent holes I213, driving the diaphragm I212 to expand and contract, thereby peeling off and cleaning the paste on the inner wall of the mixing tank 2.

[0053] A diaphragm II 234 is provided on the inner side of the end cover plate 23. Diaphragm II 234 is also made of highly elastic silicone material, and its edges are bonded and fixed to the inner wall of the end cover plate 23 with sealant. By driving the expansion and contraction of diaphragm I 212 and diaphragm II 234, the hardened paste adhering to the inner wall of the mixing tank 2 can be thoroughly cleaned. A cavity II 231 is provided inside the end cover plate 23. Cavity II 231 is a sealed chamber formed by machining inside the end cover plate 23. It is formed by welding an end cap to the outside of the end cover plate 23. The welding joint between the end cap and the end cover plate 23 uses a full welding process to ensure the airtightness of the chamber. An air hole II 233 is opened on one side of the end cover plate 23, which is connected to the cavity II 231. The air holes II 233 are evenly distributed along the inner side of the end cover plate 23. The inner port of the air hole II 233 is also funnel-shaped to facilitate the uniform ejection of gas. Cavity II 231 is connected to an external pulsed gas source through a pipe. One end of the pipe is welded and fixed to the interface on the outside of end cover plate 23 through a connector, and the interface is connected to cavity II 231. The other end of the pipe is connected to the output end of the external pulsed gas source through a connector. Similarly, by introducing pulsed gas, the diaphragm II 234 is driven to expand and contract, thereby peeling and cleaning the paste on the inside of end cover plate 23.

[0054] The mixing shaft 5 includes two connecting pipes I 51, which are rotatably mounted on the inner sides of two end caps 23 via bearings. The outer ring of the bearing is fixed in the mounting hole of the end cap 23, and the inner ring is interference-fitted with the outer wall of the connecting pipe I 51 to ensure smooth rotation of the connecting pipe I 51. A connecting pipe II 52 is welded between the two connecting pipes I 51. The welding process uses full welding to ensure the connection's firmness and sealing. Both connecting pipes I 51 and connecting pipe II 52 are made of stainless steel to ensure structural strength and corrosion resistance, adapting to the mixing environment of high-viscosity pastes. A mixing blade 53 is welded to the outer wall of the connecting pipe I 51. The mixing blade 53 is made of stainless steel and has a spiral shape. The spiral blade can increase the shear force on the paste during mixing, thereby improving the mixing effect. The root of the mixing blade 53 is fully fitted to the outer wall of the connecting pipe I 51 and then welded to ensure a firm connection and prevent it from falling off during mixing. Both sides of the stirring blade 53 are equipped with diaphragms III 533, which are made of highly elastic silicone. Their edges are bonded to the surface of the stirring blade 53 with sealant to form an independent cavity structure. The expansion and contraction of the diaphragms III 533 driven by gas can clean the hardened paste adhering to the outside of the stirring blade 53. The outer sides of the connecting pipe I 51 and the connecting pipe II 52 are equipped with multiple annular expansion cleaning components 56 for cleaning their outer walls. The multiple annular expansion cleaning components 56 are evenly distributed along the axial direction of the connecting pipe I 51 and the connecting pipe II 52 to ensure that the outer walls of the connecting pipe I 51 and the connecting pipe II 52 are fully covered, achieving cleaning without dead angles.

[0055] Both connecting pipe I 51 and connecting pipe II 52 are hollow, forming internal airflow channels to facilitate gas flow. A rectangular through-hole 54 is formed on the outer wall of connecting pipe I 51. The size of the rectangular through-hole 54 matches the root size of the stirring blade 53. The stirring blade 53 is fixed to the rectangular through-hole 54 by welding, with the weld covering the edge of the rectangular through-hole 54 to ensure a firm and sealed connection, preventing gas leakage from the weld. A cavity III 531, communicating with connecting pipe I 51, is formed inside the stirring blade 53. Cavity III 531 extends along the length of the stirring blade 53. A groove is machined inside the stirring blade 53, and a cover plate is welded to form a sealed chamber. Air holes III 532, communicating with cavity III 531, are formed on the outer side of the stirring blade 53. The outer ends of the air holes III 532 are funnel-shaped to facilitate uniform gas ejection, driving the expansion and contraction of the diaphragm III 533. A bearing housing 232 is fixedly mounted through one side of the end cover plate 23. The bearing housing 232 is fixedly connected to the end cover plate 23 by bolts. Bolt holes are opened on the flange of the bearing housing 232, and threaded holes are opened at corresponding positions on the end cover plate 23. The bolts pass through the bolt holes and are screwed into the threaded holes to achieve fixation. One end of the connecting pipe I 51 is rotatably mounted in the bearing housing 232 via a bearing. The outer ring of the bearing is fixed in the inner hole of the bearing housing 232, and the inner ring is interference-fitted with the outer wall of the connecting pipe I 51 to ensure the stability of the rotation of the connecting pipe I 51. One end of the outer connecting pipe I 51 is connected to a rotary sealing joint 24. The fixed end of the rotary sealing joint 24 is connected to the end of the connecting pipe I 51 by a thread. The rotary sealing joint 24 is a corrosion-resistant mechanical seal joint. Its air inlet end is connected to an external pulse gas source through a pipe. One end of the pipe is connected to the air inlet end of the rotary sealing joint 24 through a joint, and the other end is connected to the output end of the external pulse gas source. The gas from the external pulse gas source enters the internal airflow channel of the connecting pipe I 51 and the connecting pipe II 52 through the rotary sealing joint 24, and then is ejected through the cavity III 531 and the air hole III 532, driving the diaphragm III 533 to expand and contract, thereby peeling off and cleaning the paste on the outside of the stirring blade 53.Diaphragm I 212, diaphragm II 234, and diaphragm III 533 are each made of 1.5mm thick fluororubber membrane. The use of fluororubber membrane in this embodiment is based on engineering considerations in actual use. High-viscosity paste may contain grease or certain chemical solvents. Ordinary rubber is prone to swelling or aging after long-term contact. If rubber with good resistance to media is not used, the diaphragm is prone to cracking or permanent deformation during repeated expansion and contraction, which will affect the peeling effect and service life. Diaphragm I 212, diaphragm II 234, diaphragm III 533, rubber sealing ring 564, and rubber sealing gasket 565 are vulnerable parts and should be inspected according to the frequency of use (every 50-100 batches of mining filling paste). If wear, tear, or sealing failure is found, they should be replaced in time. At the same time, cavities I 211, II 231, III 531, and internal airflow channels need to be cleaned regularly by high-pressure gas purging to avoid solid particles accumulating and causing channel blockage, so as to ensure the stable operation of the pneumatic peeling function.

[0056] It also includes an annular expansion cleaning component 56, which is used to clean the hardened paste on the outside of connecting pipe I 51 and connecting pipe II 52.

[0057] Example 2

[0058] Reference Figure 4 , Figure 5 , Figure 7 and Figure 9 This invention provides a novel technical solution: an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades. It further includes a mesh frame 6 bonded to the outer side of the bent substrate 21, end cover plate 23, and stirring blade 53. The mesh frame 6 is made of stainless steel wire mesh, the mesh count of which is selected according to the strength requirements of the diaphragm, serving to support the diaphragm and prevent excessive expansion and deformation under gas-driven conditions. Diaphragms I 212, II 234, and III 533 are each provided with an adhesive sealing part 7 bonded to the mesh frame 6. The adhesive sealing part 7 is bonded with high-strength sealant, which is evenly applied to the contact surface between the diaphragm and the mesh frame 6, ensuring the sealing and firmness of the connection between the diaphragm and the mesh frame 6, and preventing gas leakage from the connection gaps. The adhesive sealing part 7 divides the diaphragm I 212, diaphragm II 234 and diaphragm III 533 into multiple elastic expansion parts 8. Each elastic expansion part 8 is an independent sealing cavity, and the intermediate hardened paste can be squeezed and broken during the expansion of two adjacent elastic expansion parts 8.

[0059] Example 3

[0060] Reference Figure 7 and Figure 8This invention provides a novel technical solution: an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism for the inner wall and blades. The annular expansion cleaning assembly 56 includes a fixing ring seat 561 sleeved on connecting pipe I 51 and connecting pipe II 52. The fixing ring seat 561 is made of stainless steel, and its inner wall is tightly fitted to the outer walls of connecting pipe I 51 and connecting pipe II 52 to ensure a tight seal. A rubber sealing ring 564, made of oil-resistant rubber, is fixedly sleeved on the outer wall of the fixing ring seat 561, providing a seal and preventing gas leakage from the gap between the fixing ring seat 561 and the outer annular seat 566. Multiple outer annular seats 566, made of stainless steel, are sleeved on the outer wall of the fixing ring seat 561. These outer annular seats 566 are evenly distributed along the axial direction of the fixing ring seat 561, with gaps between adjacent outer annular seats 566. Both ends of the outer annular seat 566 are provided with flanged protrusions 567. The flanged protrusions 567 and the outer annular seat 566 are integrally formed. The side of the flanged protrusions 567 facing the fixed ring seat 561 is fitted with the rubber sealing ring 564 and bonded to the outer wall of the rubber sealing ring 564 with sealant, thereby achieving a fixed connection between the outer annular seat 566 and the fixed ring seat 561 and ensuring the sealing of the connection. Multiple air jet holes 568 are opened on the outer side of the flanged protrusions 567. The air jet holes 568 are evenly distributed along the circumference of the flanged protrusions 567. The inner ports of the air jet holes 568 are connected to the cavity between the fixed ring seat 561 and the rubber sealing ring 564 to facilitate gas ejection. Multiple rubber sealing gaskets 565 are fixedly provided on the outer wall of the fixed ring seat 561. The rubber sealing gaskets 565 are made of oil-resistant rubber and are fixed to the outer wall of the fixed ring seat 561 with sealant. The rubber sealing gaskets 565 are fixed between two adjacent outer ring seats 566, which plays a role in separation and sealing, making the jetting area corresponding to each outer ring seat 566 independent, improving the targeting of cleaning, preventing gas from interfering with each other between different areas, and not affecting the outward expansion of the outer ring seat 566.

[0061] Multiple annular grooves 55 are provided on the outer walls of both connecting pipe I 51 and connecting pipe II 52. The size of the annular grooves 55 is adapted to the size of the fixed ring seat 561. The fixed ring seat 561 is fixedly fitted into the annular grooves 55 with sealant to ensure the connection is firm and to prevent the fixed ring seat 561 from moving axially during the stirring process. In addition, sealing rings that cooperate with the flange portion 567 are provided on both sides of the annular grooves 55 to reduce the gap for material intrusion. The outer walls of the fixed ring seat 561, connecting pipe I 51 and connecting pipe II 52 are all provided with interconnected through holes 562. The inner port of the through hole 562 is connected to the internal airflow channel of connecting pipe I 51 and connecting pipe II 52, and the outer port is connected to the cavity between the fixed ring seat 561 and the rubber sealing ring 564. The gas in the internal airflow channel of connecting pipe I 51 and connecting pipe II 52 can enter the cavity between the fixed ring seat 561 and the rubber sealing ring 564 through the through hole 562, and then be ejected through the jet hole 568 to clean the grease on the outer wall of connecting pipe I 51 and connecting pipe II 52.

[0062] Both the outer annular seat 566 and the fixed ring seat 561 located on the connecting pipe I 51 are provided with an opening groove 563 that is adapted to the stirring blade 53. The size of the opening groove 563 is adapted to the thickness of the stirring blade 53. The depth of the opening groove 563 can ensure that the outer annular seat 566 and the fixed ring seat 561 are smoothly fitted onto the connecting pipe I 51, while avoiding interference with the stirring blade 53, ensuring that the stirring blade 53 can rotate normally and not affect the stirring operation.

[0063] Example 4

[0064] Reference Figures 1-3This invention provides a novel technical solution: an anti-adhesion paste mixing tank with an integrated pneumatic peeling mechanism on the inner wall and blades. A motor II 32 is fixedly installed inside the drive housing 3. Motor II 32 is also bolted to another mounting base inside the drive housing 3, which is welded to the inner wall of the drive housing 3. Motor II 32 is a servo motor matching the model of motor I 31 for easy unified control. The drive housing 3 is a semi-enclosed structure, made of welded steel plate with a rust-proof coating. Louvered ventilation holes are provided on both sides of the housing, with dust filters inside. A small cooling fan is fixedly installed inside the housing, electrically connected to the PLC controller and starting synchronously with the motor to quickly dissipate internal heat and prevent overheating. A connecting flange 33 is rotatably mounted through one side of the drive housing 3. The connecting flange 33 is rotatably connected to the drive housing 3 via a bearing. The outer ring of the bearing is fixed in the through hole of the drive housing 3, and the inner ring is interference-fitted with the outer wall of the connecting flange 33. The input end of the gearbox 4 is rotatably mounted inside the connecting flange 33. The inner wall of the connecting flange 33 has a step, and the input shaft of the gearbox 4 is embedded in the step, achieving a rotatable connection through a bearing. The housing of the gearbox 4 is fixedly connected to the connecting flange 33 by bolts. A half-tooth gear 34 is fixedly fitted onto the outer wall of the connecting flange 33 by a key. A keyway is opened on the outer wall of the connecting flange 33, and a corresponding keyway is also opened in the inner hole of the half-tooth gear 34. The key is embedded in the keyway to achieve circumferential fixation of both, and an axial limit is provided by a nut to prevent axial movement of the half-tooth gear 34. The output end of motor II 32 is fixed with a full gear 35 that meshes with the half gear 34 via a key. The output shaft of motor II 32 has a keyway, and a corresponding keyway is formed in the inner hole of the full gear 35. The key is embedded in the keyway for fixation, and axial positioning is achieved using a nut. Dustproof covers are provided on the outer sides of the half gear 34 and the full gear 35, and these covers are bolted to the side of the drive housing 3. A wear-resistant rubber pad is provided on the inner side of the cover to prevent debris from entering the meshing surface without affecting gear transmission. Motor II 32 drives the full gear 35 to rotate, and the meshing of the full gear 35 with the half gear 34 drives the connecting flange 33 to rotate, which in turn drives the reduction gearbox 4 and the mixing tank 2 to rotate, thus achieving the tilting operation.

[0065] It also includes a PLC controller, which is fixedly mounted on the outside of the drive housing 3 and electrically connected to the electromagnetic control valves of motor I 31, motor II 32 and external pulse air source, respectively. The PLC controller has a preset control program that can realize the synchronous start and stop of the stirring driven by motor I 31 and the air supply from the pulse air source, and the interlock control of the tilting action and stirring action driven by motor II 32 (tilting is prohibited in the stirring state, and stirring and air supply are stopped in the tilting state), so as to ensure that the work safety and the anti-adhesion cleaning effect are synergistically achieved.

[0066] Working principle: When performing paste mixing, the paste to be mixed is first added into the mixing tank 2. Motor I 31 is started, and it drives the gear set inside the reduction gearbox 4 to rotate via a coupling. The gear set transmits power to the two output ends of the reduction gearbox 4, which in turn drives the two mixing shafts 5 to rotate synchronously. The mixing blades 53 on the mixing shafts 5 rotate with the mixing shafts 5, mixing the paste inside the mixing tank 2. After mixing is complete, motor II 32 is started, driving the full-tooth gear 35 to rotate. The full-tooth gear 35 meshes with the half-tooth gear 34, which drives the connecting flange 33 to rotate, thereby driving the reduction gearbox 4 and the mixing tank 2 to rotate. This causes the opening of the mixing tank 2 to tilt, and the material inside is discharged under its own gravity.

[0067] When it is necessary to clean the hardened paste on the inner wall of the mixing tank 2, the external pulse gas source is activated. The pulse gas generated by the external pulse gas source is introduced into the internal airflow channels of cavity I 211, cavity II 231, and connecting pipe I 51 and connecting pipe II 52 through branch pipes. The gas introduced into cavity I211 forms a stable pulse pressure within cavity I211, and is evenly sprayed out through vent I213, acting on diaphragm I212, driving diaphragm I212 to repeatedly expand and contract. When diaphragm I212 expands, it contacts the hardened paste on the inner wall of the mixing tank 2 and applies a thrust, peeling off the paste. The gas introduced into cavity II231 is evenly sprayed out through vent II233, acting on diaphragm II234, driving diaphragm II234 to repeatedly expand and contract, achieving the peeling and cleaning of the paste on the inner side of end cover plate 23. A portion of the gas introduced into the airflow channels inside connecting pipe I51 and connecting pipe II52 enters cavity III of the stirring blade 53 through the rectangular through hole 54 on connecting pipe I51. Inside 531, the paste is sprayed out through the air hole Ⅲ 532 and acts on the diaphragm Ⅲ 533, driving the diaphragm Ⅲ 533 to repeatedly expand and contract, peeling off the paste on the outside of the stirring blade 53. Another part enters the cavity between the fixed ring seat 561 and the rubber sealing ring 564 through the through hole 562. When the air pressure reaches a certain value, it will drive the outer ring seat 566 to move outward under the force of the air pressure, and stretch the corresponding rubber sealing ring 564 and rubber sealing gasket 565. When it expands to a certain extent, the hardened paste on its outer wall will automatically peel off. At the same time, the air jet hole 568 is misaligned with the annular groove 55. At this time, the air jet hole 568 sprays out and peels off the hardened paste between two adjacent annular grooves 55.

[0068] However, as is well known to those skilled in the art, the working principles and wiring methods of motor I31 and motor II32 are conventional methods or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pneumatic peeling mechanism integrating the inner wall and blades for preventing adhesion of pastes, characterized in that, include: The mixing tank (2) includes a bent base plate (21) and end caps (23) fixedly connected to both ends of the bent base plate (21). The stirring shaft (5) is rotatably disposed inside the stirring tank (2). The stirring shaft (5) includes a connecting pipe I (51), a stirring blade (53) fixedly connected to the connecting pipe I (51), and a connecting pipe II (52) fixed between the two connecting pipes I (51). The inner wall of the bent substrate (21) is provided with diaphragm I (212), the inner side of the end cover plate (23) is provided with diaphragm II (234), and the two sides of the stirring blade (53) are provided with diaphragm III (533). The mixing tank (2) and the mixing spindle (5) are respectively provided with airflow channels. The airflow channels are used to introduce pulse gas and guide it to the inner side of the diaphragm I (212), the diaphragm II (234) and the diaphragm III (533); The pulsed gas introduced drives the diaphragm I (212), the diaphragm II (234) and the diaphragm III (533) to periodically expand and contract, so as to peel off the paste attached to the inner wall of the mixing tank (2) and the surface of the mixing blade (53).

2. The anti-adhesion paste mixing tank according to claim 1, characterized in that, The bent substrate (21) has a cavity I (211) inside, and the inner wall of the bent substrate (21) has an air hole I (213) that communicates with the cavity I (211). The cavity I (211) constitutes part of the airflow channel and is located inside the diaphragm I (212).

3. The anti-adhesion paste mixing tank according to claim 1, characterized in that, The end cover plate (23) has a cavity II (231) inside, and an air hole II (233) communicating with the cavity II (231) is opened on the inner side of the end cover plate (23). The cavity II (231) constitutes part of the airflow channel and is located inside the diaphragm II (234).

4. The anti-adhesion paste mixing tank according to claim 1, characterized in that, The connecting pipe I (51) is a hollow pipe and constitutes part of the airflow channel; The stirring blade (53) has a cavity Ⅲ (531) inside, and the stirring blade (53) has an air hole Ⅲ (532) communicating with the cavity Ⅲ (531) on the outside. The cavity III (531) is connected to the internal cavity of the connecting pipe I (51) and is located inside the diaphragm III (533).

5. The anti-adhesion paste mixing tank according to claim 4, characterized in that, The end cover plate (23) is fixed through the bearing housing (232), and one end of the connecting pipe I (51) is rotatably connected to the bearing housing (232) through the bearing; The end of the connecting pipe I (51) is connected to a rotary sealing joint (24), and the air inlet end of the rotary sealing joint (24) is used to connect to an external air source.

6. The anti-adhesion paste mixing container according to any one of claims 1 to 5, characterized in that, A mesh frame (6) is bonded to the outer side of the bent substrate (21), the end cover plate (23), and the stirring blade (53). The diaphragm I (212), the diaphragm II (234) and the diaphragm III (533) are respectively provided with adhesive sealing parts (7) that are bonded to the mesh frame (6), and the adhesive sealing parts (7) divide each diaphragm into multiple independent elastic expansion parts (8).

7. The anti-adhesion paste mixing tank according to claim 5, characterized in that, It also includes an annular expansion cleaning assembly (56) sleeved on the outer wall of the connecting pipe I (51) and the connecting pipe II (52); The annular expansion cleaning assembly (56) includes a fixed ring seat (561) and at least two outer annular seats (566) sleeved outside the fixed ring seat (561), and a sealed chamber is formed between the fixed ring seat (561) and the outer annular seats (566). The fixed ring seat (561), the connecting pipe I (51) and the connecting pipe II (52) are all provided with through holes (562) that connect the airflow channel to the sealed chamber. The outer annular seat (566) has a jet hole (568) on its side.

8. The anti-adhesion paste mixing tank according to claim 7, characterized in that, The outer wall of the fixed ring seat (561) is fitted with a rubber sealing ring (564), and the end of the outer ring seat (566) is bonded to the outer wall of the rubber sealing ring (564). A rubber sealing gasket (565) is provided between adjacent outer annular seats (566).

9. The anti-adhesion paste mixing tank according to claim 1, characterized in that, It also includes a frame (1), a drive housing (3) and a gearbox (4); The drive housing (3) is mounted on the frame (1), and a motor I (31) is fixed inside it. The gearbox (4) is fixed to one side of the mixing tank (2), the output end of the motor I (31) is connected to the input end of the gearbox (4), and the output end of the gearbox (4) is connected to the mixing spindle (5).

10. The anti-adhesion paste mixing tank according to claim 9, characterized in that, The drive housing (3) also has a motor II (32) fixed inside. A connecting flange (33) is rotatably provided through one side of the drive housing (3). The input end of the reduction gearbox (4) is rotatably connected to the connecting flange (33). The housing of the reduction gearbox (4) is fixedly connected to the connecting flange (33). The outer wall of the connecting flange (33) is fixedly fitted with a half-tooth gear (34), and the output end of the motor II (32) is fixedly fitted with a full-tooth gear (35) that meshes with the half-tooth gear (34).

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