A vertical mill air lock feeding valve

Abstract

A vertical mill air-locking feeding valve comprises a feeding hopper, a main shaft, a shell assembly, and a core assembly of a vertical mill valve. The shell assembly comprises a shell end wall, a spacer cylinder, a middle side wall, and a base assembly. The spacer cylinder is fixedly connected to the end wall body. The barrel body is fixedly connected to the upper end of the vertical side wall. The lower end of the feeding hopper is fixedly connected to the upper end of the barrel body. The middle side wall comprises a middle side wall protrusion and a middle side wall outer wall. The left and right end faces of the middle side wall protrusion are adjacent to the corresponding end faces of the barrel body. The middle side wall outer wall is detachably fixedly connected to the corresponding parts of the feeding hopper and the barrel body, respectively. The left and right air ducts, the vents on the end plate, and the space surrounded by the corresponding surfaces of the main shaft and a number of vertical mill valve blade assemblies, and the outer side surface of the end plate and the space surrounded by the corresponding surfaces of the end wall body, the end ring, the spacer cylinder, and the main shaft together constitute a hot air channel, and the hot air enters the hot air channel from the air duct on one side and leaves the hot air channel through the air duct on the other side. The invention has a reasonable structure and can easily inspect and repair the vertical mill air-locking feeding valve.

Description

Technical Field

[0001] The invention relates to a vertical mill, in particular to an air-locking feeding valve for a vertical mill. Background Art

[0002] In recent years, with the acceleration of urban construction, the production scale of the cement industry has continued to expand, and vertical mills that integrate crushing, drying, grinding, and graded transportation, with high production efficiency, can grind block, granular and powdered raw materials into required powdered materials are also widely used. When the vertical mill is working, the material falls from the discharge port to the center of the grinding disc, moves to the edge of the grinding disc under the action of centrifugal force and is pressed by the grinding roller. The crushed material overflows from the edge of the grinding disc and is carried to the high-efficiency powder selector integrated with the vertical mill by the high-speed upward hot air flow from the wind ring. The coarse powder is sorted by the separator and returned to the grinding disc for re-grinding; the fine powder is discharged from the mill with the air flow and collected in the dust collection device of the system, which is the product. The coarse granular materials that are not carried by the hot air flow and the metal parts that accidentally enter the mill sink from the wind ring, and then are scraped out by the scraper plate, and then fed into the vertical mill for re-grinding through the external circulation bucket elevator. During the production and operation of the vertical mill, whether the feeding is uniform or not plays a vital role in whether the working condition of the vertical mill can be stable. If the feeding fluctuation is too large, it will cause the material layer in the vertical mill to be unstable, resulting in aggravated horizontal and vertical vibration of the vertical mill, or even tripping. Therefore, whether the feeding equipment works smoothly and normally is particularly important in the vertical mill production system. In addition, the vertical mill is required to operate under negative pressure in the entire production system. For this reason, the vertical mill is usually equipped with a wind lock valve with a better wind lock effect as a feeding device for metering and feeding.

[0003] Patent document with application number 201220407461.7, authorization announcement number CN202803363 U, and title “A vertical mill air-locking discharge valve” discloses a vertical mill air-locking discharge valve: “including a shell fixedly arranged at the feed inlet of the vertical mill, a grid wheel rotor rotatably connected to the shell, a motor and a transmission device connected between the grid wheel rotor and the motor, and a detachable barrel bushing is provided on the inner wall of the shell, which can reduce the wear of the shell by the material.” Application document with application number 201220407461.7, authorization announcement number CN202803363 U, and title “A vertical mill air-locking discharge valve” discloses another vertical mill air-locking discharge valve: “including a shell fixedly arranged at the feed inlet of the vertical mill, a grid wheel rotor rotatably connected to the shell, a motor and a transmission device connected between the grid wheel rotor and the motor, and a detachable barrel bushing is provided on the inner wall of the shell”. However, there are still areas for improvement in the structures of both. Summary of the invention

[0004] The main purpose of the invention is to provide a novel vertical mill air-locking feeding valve.

[0005] The technical solution used in the present invention is: a vertical mill air-locking feeding valve, including a feeding hopper, a main shaft, a housing assembly, and a vertical mill valve core component. The vertical mill valve core component includes a plurality of vertical mill valve blade components, one end plate on the left and one end plate on the right, and one end ring on the left and one end plate on the left. The left and right ends of the vertical mill valve blade component are respectively fixedly connected to an end plate, and the outer ends of the left and right end plates are respectively fixedly connected to one end of the corresponding end ring, and the other end of the end ring is located between the end plate and the end wall body and close to the end wall body;

[0006] The shell assembly includes a shell end wall, a spacer cylinder, a middle side wall, and a base assembly;

[0007] The shell end wall comprises an end wall body and an air duct fixedly connected to the upper end of the end wall body;

[0008] The spacer cylinder includes a cylinder body and a cylinder flange. The left and right spacer cylinders are respectively fixedly connected to the corresponding end wall body through the cylinder flanges;

[0009] The shell base assembly includes a bottom plate, four vertical side walls which are perpendicular to the bottom plate, the lower end of which is fixedly connected to the bottom plate, the upper end of which is fixedly connected to the outer surface of the cylinder body, and the side walls are parallel or perpendicular to each other;

[0010] The left and right cylinder bodies are respectively fixedly connected to the upper ends of the vertical side walls;

[0011] The left and right side walls of the feeding hopper are parallel to each other and perpendicular to the main axis, the front and rear side walls of the feeding hopper are parallel to the main axis and the distance between the upper ends of the two is greater than the distance between the lower ends of the two. The lower end of the feeding hopper is fixedly connected to the upper end of the corresponding barrel body;

[0012] The middle side wall includes a middle side wall protrusion and a middle side wall outer wall. The inner surface of the middle side wall protrusion and the inner arc cylindrical surface of the corresponding part of the barrel body form a cylindrical arc cylindrical surface, and the left and right end surfaces of the middle side wall protrusion are adjacent to the corresponding end surfaces of the barrel body; the parts of the middle side wall outer wall other than the parts connected to the middle side wall protrusion are respectively fixedly connected to the feeding hopper and the corresponding parts of the barrel body;

[0013] The left and right ends of the main shaft are first fixedly connected to the corresponding end plates and then extend outwards to be respectively connected to the corresponding end wall bodies in a sealed manner. The leftmost end of the main shaft is connected to the right end of the output shaft of the reduction motor by transmission. Both left and right end plates are provided with a number of vents. The left and right air ducts, the vents on the left and right end plates and the space surrounded by the corresponding surfaces of the main shaft and a number of vertical mill valve blade assemblies, the outer side surfaces of the left and right end plates and the space surrounded by the corresponding surfaces of the end wall body, the end ring, the spacer tube and the main shaft together form a hot air channel. The hot air enters the hot air channel from the air duct on one side and leaves the hot air channel through the air duct on the other side.

[0014] When the present invention is installed, it is necessary to use a corresponding auxiliary bracket, which will be removed after the installation of the present invention is completed to reduce the space occupied by the present invention. When in use, the material passing through the feeding hopper passes through the space at the upper end of the front and rear middle side walls and falls into the vertical mill air-locking feeding valve, and then moves from top to bottom under the rotation drive of the vertical mill valve core assembly, and finally falls from the space at the lower end of the front and rear middle side walls into and passes through the space surrounded by four vertical side walls for the next step of processing. In the process of the material rotating from top to bottom, the hot air enters the corresponding channel from the pipe mouth of one air duct and finally flows out from the pipe mouth of another air duct, and the material in the core assembly of the vertical mill valve is heated and dried. At the same time, the temperature of the vertical mill valve blade assembly components that have unloaded the material is also heated. The reasonable structure is conducive to the next step of processing these materials. The biggest difference between the present invention and the existing vertical mill air lock feeding valve is that the middle side wall can be disassembled to observe and judge whether the core component structure of the vertical mill valve needs necessary inspection and maintenance and whether the vertical mill valve itself needs to be inspected and replaced when necessary, thereby greatly reducing the overall use, inspection and maintenance costs of the vertical mill air lock feeding valve.

[0015] Preferably, the vertical mill valve blade assembly includes a plurality of scrapers and a scraper fixing base equal to the number of scrapers; the scraper fixing base is U-shaped, the bottom of the scraper fixing base is tangent to the same circle, the side walls of the scraper fixing base are connected in sequence, and the left and right ends of the scraper fixing base are respectively welded to the corresponding end plates to realize the structure in which the left and right ends of the vertical mill valve blade assembly are respectively connected to an end plate. The inner end of the scraper is fixedly connected to the outer end of a different scraper fixing base in sequence. The vertical mill valve blade assembly can also be directly formed by extending the side walls of two U-shaped fixed bases. In this preferred embodiment, the vertical mill valve blade assembly is composed of a plurality of scrapers connected to the scraper fixing base, and the scraper is in the most easily worn part. Therefore, this structure can reduce the use and maintenance costs of the present invention.

[0016] Preferably, a material blocking device is provided at the rear of the front side wall of the feeding hopper. The material blocking device includes a swing shaft and a baffle. The upper end of the baffle is fixedly connected to the swing shaft, and the left and right ends of the swing shaft are rollingly supported on the left and right side walls of the feeding hopper. This preferred solution can avoid the impact and wear of the raw materials on the rear surface of the front side wall of the feeding hopper to the greatest extent when the raw materials are fed into the feeding hopper, thereby increasing the service life of related components.

[0017] Preferably, each of the upper ends of the left and right barrel bodies is fixedly connected with a feed hopper fixed wall, and the left and right side walls of the feed hopper and the feed hopper fixed wall are detachably connected together, thereby realizing the detachable connection between the feed hopper and the upper end of the barrel body. This preferred solution has a simple structure, which is conducive to ensuring the rapid and accurate positioning, installation, maintenance and replacement of the feed hopper.

[0018] As a preferred embodiment, a graphite packing assembly and a bearing assembly are also included. The graphite packing assembly includes a graphite packing body, a graphite packing mounting seat, a graphite packing mounting seat cover, and an elastic gasket. The graphite packing mounting seat is fixedly connected to the corresponding end wall body, the graphite packing body is arranged in the graphite packing mounting seat, the elastic gasket is arranged between the graphite packing mounting seat and the graphite packing mounting seat cover, and the graphite packing mounting seat and the graphite packing mounting seat cover are detachably connected. The bearing assembly includes a bearing seat fixedly connected to the end shell wall and a bearing arranged in the bearing seat;

[0019] The main shaft includes a main shaft middle section, which includes, from the right to the right, an end plate right connection section fixedly connected to the right end plate 4.2, a packing body right connection section connected to the middle hole of the graphite packing body, and a bearing right connection section connected to the bearing in the bearing assembly. From the left to the left, the main shaft middle section includes, from the right to the left, an end plate left connection section fixedly connected to the left end plate, a packing body left connection section connected to the graphite packing body, a bearing left connection section connected to the bearing in the bearing assembly, and a motor connection section connected to the right end of the output shaft of the reduction motor.

[0020] The diameter of the middle section of the main shaft is larger than the diameter of the left and right connecting sections of the end plate, the diameter of the left and right connecting sections of the end plate is larger than the diameter of the left and right connecting sections of the packing body, the diameter of the left and right connecting sections of the packing body is equal to the diameter of the left and right connecting sections of the bearing, and the diameter of the left connecting section of the bearing is equal to or larger than the diameter of the motor connecting section;

[0021] The right side of the left graphite packing body abuts against the left side of the left connecting section of the end plate, and the left side of the left graphite packing body abuts against the right side of the graphite packing mounting seat cover in the left graphite packing assembly; the left side of the right graphite packing body abuts against the right side of the right connecting section of the end plate, and the right side of the right graphite packing body abuts against the left side of the graphite packing mounting seat cover in the right graphite packing assembly. This preferred solution has a reasonable structure and a long service life.

[0022] Preferably, the core assembly of the vertical mill valve further includes an air duct isolation tube inner assembly and an air duct outer isolation tube. The shell end wall further includes an end wall air duct isolation tube;

[0023] The air duct isolation pipe internal components include an air duct isolation pipe, a left connecting circular plate, and a right connecting circular plate. The left and right connecting circular plates are respectively fixedly connected to the left and right ends of the air duct isolation pipe, and the left and right connecting circular plates are respectively fixedly connected to the corresponding end plates;

[0024] The inner end of the air duct outer isolation tube is fixedly connected to the outer plate surface of the corresponding end plate; the outer ends of the end wall air duct isolation tubes are respectively fixedly connected to the corresponding shell end walls, and the free ends are inserted into the corresponding air duct outer isolation tubes;

[0025] The position of the vent on the end plate is within the space defined by the outer surface of the isolation tube in the air duct and the vertical mill valve blade assembly, and the smallest cylindrical surface determined by the position of the vent on the end plate surrounds the isolation tube outside the air duct. In this preferred solution, the hot air flow rate is fast, which is conducive to uniform heating of the core assembly of the vertical mill valve, and further conducive to uniform drying of the material.

[0026] Preferably, the end ring is provided with two grain guide ports, the lower end of the corresponding barrel body is provided with an upper grain guide port, and the side wall is provided with a lower grain guide port connected to the upper grain guide port. The grain guide port is intermittently connected to the upper grain guide port, and the particles entering between the end plate and the end wall body will fall into the space surrounded by the four side walls through the grain guide port, the upper grain guide port, and the lower grain guide port when the grain guide port periodically connects with the upper grain guide port during the rotation of the end ring, and merge into the main flow of the dried material. Here, the main flow of the dried material refers to the material flow that moves from top to bottom under the rotation drive of the core assembly of the vertical mill valve, and finally falls from the space at the lower end of the front and rear middle side walls and passes through the space surrounded by the four vertical side walls.

[0027] Preferably, a cleaning pipe is further provided at the lower end of the end wall body, one end of the cleaning pipe is fixedly connected to the end wall body, and the other end is detachably fixedly connected to a cleaning pipe opening sealing plate. This preferred solution has a simple structure and low processing and manufacturing cost.

[0028] As a preference, the front and rear side walls are provided with an observation window individually or simultaneously, and the observation window is provided with an observation glass which can be detachably fixed. This preferred solution facilitates observation of material collection conditions.

[0029] Preferably, the middle side wall protrusion and the middle side wall outer wall are manufactured separately and then can be separated and connected to form the main structure of the middle side wall. This preferred solution is conducive to selecting materials with different wear resistance to manufacture the middle side wall protrusion and the middle side wall outer wall respectively, thereby helping to reduce the inspection and replacement frequency of the corresponding components, thereby reducing the use and maintenance costs.

[0030] In summary, the present invention has a reasonable structure and can easily inspect the internal conditions of the vertical mill air lock feeding valve and perform corresponding maintenance operations based on the conditions of each component obtained from the inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 : A schematic structural diagram of Embodiment 1 of the present invention;

[0032] Figure 2 : AA cross-sectional schematic diagram of embodiment 1;

[0033] Figure 3 : Schematic diagram of the side wall structure of Example 1;

[0034] Figure 4 : BB cross-sectional rotation diagram of embodiment 1;

[0035] Figure 5 : A schematic diagram of the structure of the second embodiment of the present invention;

[0036] Figure 6 : AA cross-sectional view of the second embodiment;

[0037] Figure 7 : Schematic diagram of the middle side wall structure of Example 2;

[0038] Figure 8 : BB cross-sectional rotation diagram of the second embodiment;

[0039] Fig. 9 : Schematic diagram of the middle side wall structure of embodiment 3;

[0040] Fig.10 : BB cross-sectional rotation diagram of embodiment 3;

[0041] In the figure: feeding hopper 1;

[0042] Main shaft 2, main shaft middle section 2.1;

[0043] Shell assembly 3, shell end wall 3.1, end wall body 3.11, air duct 3.12, grain cleaning pipe 3.13, grain cleaning pipe opening sealing plate 3.14, spacer cylinder 3.2, cylinder body 3.21, cylinder flange 3.22, upper grain opening 3.23, middle side wall 3.3, middle side wall protrusion 3.31, middle side wall outer wall 3.32, base assembly 3.4, bottom plate 3.41, vertical side wall 3.42, lower grain opening 3.43, observation window 3.44, feeding hopper fixed wall 3.5, graphite packing assembly 3.6, graphite packing body 3.6.1, graphite packing mounting seat 3.6.2, graphite packing mounting seat cover 3.6.3, elastic washer 3.6.4; bearing assembly 3.7, end wall air duct isolation pipe 3.8;

[0044] Vertical mill valve core component 4, vertical mill valve blade component 4.1, scraper 4.11, scraper fixing base 4.12, end plate 4.2, vent 4.21, end ring 4.3, air duct isolation pipe inner component 4.4, air duct inner isolation pipe 4.4.1, left connecting circular plate 4.4.2, right connecting circular plate 4.4.3, air duct outer isolation pipe 4.5, grain guide port 4.6;

[0045] Gear motor 5;

[0046] Material blocking device 6, swing shaft 6.1, baffle 6.2;

[0047] Coupling 7;

[0048] Connect the middleware 8. DETAILED DESCRIPTION

[0049] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0050] Embodiment 1: Figure 1-Figure 4 As shown, the present invention includes a feed hopper 1, a main shaft 2, a housing assembly 3, and a vertical mill valve core component 4. The vertical mill valve core component 4 includes a plurality of vertical mill valve blade components 4.1, an end plate 4.2 on each side, and an end ring 4.3 on each side. The left and right ends of the vertical mill valve blade component 4.1 are welded to an end plate 4.2, and the outer ends of the left and right end plates 4.2 are respectively welded to one end of the corresponding end ring 4.3. The other end of the end ring 4.3 is located between the end plate 4.2 and the end wall body 3.11 and is close to the end wall body 3.11. Wherein:

[0051] The shell assembly 3 includes a shell end wall 3.1, a spacer cylinder 3.2, a middle side wall 3.3, and a base assembly 3.4;

[0052] The shell end wall 3.1 includes an end wall body 3.11 and an air duct 3.12 fixedly connected to the upper end of the end wall body;

[0053] The spacer cylinder 3.2 includes a cylinder body 3.21 and a cylinder flange 3.22. The left and right spacer cylinders 3.2 are detachably connected to the corresponding end wall body 3.11 through the cylinder flange 3.22;

[0054] The shell base assembly 3.4 includes a bottom plate 3.41, four vertical side walls 3.42 which are perpendicular to the bottom plate and welded to the bottom plate at the lower end and welded to the outer surface of the cylinder body 3.21 at the upper end, and are parallel or perpendicular to each other;

[0055] The lower ends of the left and right cylinder bodies 3.21 are respectively welded to the upper ends of the corresponding vertical side walls;

[0056] The left and right side walls of the feeding hopper 1 are parallel to each other and perpendicular to the main axis 2. The front and rear side walls of the feeding hopper 1 are parallel to the main axis 2 and the distance between the upper ends of the two is greater than the distance between the lower ends of the two. The lower end of the feeding hopper 1 is detachably connected to the upper end of the corresponding barrel body 3.21.

[0057] The middle side wall 3.3 includes a middle side wall protrusion 3.31 and a middle side wall outer wall 3.32. The inner surface of the middle side wall protrusion 3.31 and the inner arc cylindrical surface of the corresponding part of the barrel body 3.21 form a cylindrical arc cylindrical surface, and the left and right end surfaces of the middle side wall protrusion 3.31 are adjacent to the corresponding end surfaces of the barrel body 3.21; the parts of the middle side wall outer wall 3.32 other than the parts connected to the middle side wall protrusion 3.31 are respectively detachably connected to the feeding hopper 1 and the corresponding parts of the barrel body 3.21 through bolt structures;

[0058] The left and right ends of the main shaft 2 are first fixedly connected to the corresponding end plates 4.2 [removably] and then extend outward to be sealed and movably connected to the corresponding end wall bodies 3.11 respectively. The leftmost end of the main shaft 2 is connected to the right end of the output shaft of the reduction motor 5 through a coupling 7 [the specific structural details are simple and known technologies are not described here]; the left and right end plates 4.2 are both provided with a plurality of ventilation holes 4.21 [six circular holes in this embodiment]; the left and right air ducts 3.12, the ventilation holes 4.21 on the left and right end plates and the space surrounded by the corresponding surfaces of the main shaft 2 and the plurality of vertical mill valve blade assemblies 4.1, the outer side surfaces of the left and right end plates 4.2 and the space surrounded by the corresponding surfaces of the end wall body 3.11, the end ring 4.3, the spacer tube 3.21, and the main shaft 2 together constitute a hot air channel, and the hot air enters the hot air channel from the air duct 3.12 on one side and leaves the hot air channel through the air duct 3.12 on the other side.

[0059] In this embodiment, hot air Figure 1 The air duct on the left enters the hot air channel, and the hot air channel is discharged from the air duct on the right. The reduction motor 5 is arranged on the left, driving the core assembly 4 of the vertical mill valve to rotate clockwise.

[0060] In this embodiment, the vertical mill valve blade assembly 4.1 includes six scrapers 4.11 and six scraper fixed bases 4.12. The scraper fixed base 4.12 is U-shaped, the bottom of the scraper fixed base 4.12 is tangent to the same circumference, the side walls of the scraper fixed base 4.12 are sequentially detachably connected together, the left and right ends of the scraper fixed base 4.12 are respectively welded to the corresponding end plate 4.2 to realize the structure in which the left and right ends of the vertical mill valve blade assembly 4.1 are respectively fixedly connected to an end plate 4.2, and the inner end of the scraper 4.11 is sequentially detachably connected to the outer end of a different scraper fixed base 4.12. As a preferred embodiment, the detachable connection structure between the side walls of the scraper fixed base 4.12 at the same position and between the side walls and the corresponding scraper 4.11 share the same bolts, nuts and gaskets. The upper ends of the left and right barrel bodies 3.21 are each fixedly connected with a feed hopper fixed wall 3.5, and the left and right side walls of the feed hopper 1 and the feed hopper fixed wall are detachably fixedly connected together with a bolt structure to realize the detachable connection between the feed hopper and the upper end of the barrel body 3.21. A material blocking device 6 is provided behind the front side wall of the feed hopper. The material blocking device 6 includes a swing shaft 6.1 and a baffle 6.2, the upper end of the baffle 6.2 is detachably fixedly connected to the swing shaft 6.1, and the left and right ends of the swing shaft 6.1 are rollingly supported on the left and right side walls of the feed hopper 1. The specific structural details are well known in the art and will not be described here.

[0061] As mentioned above, in order to prevent the hot air from leaking out from the joint between the main shaft and the end wall body 3.11, the main shaft and the end wall body 3.11 are sealed and connected. In this embodiment, the sealed connection structure adopts a graphite packing assembly 3.6, and the graphite packing assembly 3.6 includes a graphite packing body 3.6.1, a graphite packing mounting seat 3.6.2, a graphite packing mounting seat cover 3.6.3, and an elastic gasket 3.6.4. The graphite packing mounting seat 3.6.2 and the corresponding end wall body 3.11 are fixedly connected by welding, the graphite packing body 3.6.1 is arranged in the graphite packing mounting seat 3.6.2, the elastic gasket 3.6.4 is arranged between the graphite packing mounting seat 3.6.2 and the graphite packing mounting seat cover 3.6.3, and the graphite packing mounting seat 3.6.2 and the graphite packing mounting seat cover 3.6.3 are detachably connected by a plurality of bolts. In order to reduce the rotational resistance of the main shaft, the present embodiment also includes a bearing assembly 3.7. The bearing assembly 3.7 includes a bearing seat fixedly connected to the end shell wall 3.1 by a connecting frame, and a bearing disposed in the bearing seat. The specific structural details are simple and well-known technologies and are not described here. Correspondingly, the main shaft 2 includes a main shaft middle section 2.1. The main shaft middle section includes, to the right, a right connecting section of the end plate fixedly connected to the right end plate 4.2 [removably], a right connecting section of the packing body [slidingly] connected to the hole in the graphite packing body 3.6.1, and a right connecting section of the bearing connected to the bearing in the bearing assembly 3.7; the main shaft middle section includes, to the left, a left connecting section of the end plate fixedly connected to the left end plate 4.3 [removably], a left connecting section of the packing body [slidingly] connected to the graphite packing body 3.6.1, a left connecting section of the bearing connected to the bearing in the bearing assembly 3.7, and a motor connecting section connected to the right end of the output shaft of the reduction motor 5.

[0062] The diameter of the middle section of the main shaft is larger than the diameter of the left and right connecting sections of the end plate, the diameter of the left and right connecting sections of the end plate is larger than the diameter of the left and right connecting sections of the packing body, the diameter of the left and right connecting sections of the packing body is equal to the diameter of the left and right connecting sections of the bearing, and the diameter of the left connecting section of the bearing is equal to or larger than the diameter of the motor connecting section;

[0063] The right side surface of the left graphite packing body 3.6.1 abuts against the left side surface of the left connecting section of the end plate, and the left side surface of the left graphite packing body 3.6.1 abuts against the right side surface of the graphite packing mounting seat cover 3.6.3 in the left graphite packing assembly 3.6; the left side surface of the right graphite packing body 3.6.1 abuts against the right side surface of the right connecting section of the end plate, and the right side surface of the right graphite packing body 3.6.1 abuts against the left side surface of the graphite packing mounting seat cover 3.6.3 in the right graphite packing assembly 3.6.

[0064] Preferably, the vertical mill valve core component 4 further includes an air duct isolation pipe inner component 4.4 and an air duct outer isolation pipe 4.5; the shell end wall 3.1 further includes an end wall air duct isolation pipe 3.8;

[0065] The air duct isolation pipe internal component 4.4 includes an air duct isolation pipe 4.4.1, a left connecting circular plate 4.4.2, and a right connecting circular plate 4.4.3; the left and right connecting circular plates are respectively welded to the left and right ends of the air duct isolation pipe, and the left and right connecting circular plates are respectively detachably connected to the corresponding end plates by bolt structures. A connecting intermediate member 8 connected to the shaft 2 by key transmission is provided between the end plate and the shaft 2, and the end plate and the connecting intermediate member 8 are connected together by bolts, thereby realizing the detachable connection between the main shaft and the end plate;

[0066] The inner end of the air duct outer isolation tube 4.5 is welded to the outer plate surface of the corresponding end plate 4.2; the outer end of the end wall air duct isolation tube 3.8 is respectively welded to the corresponding shell end wall 3.1, and the free end is inserted into the corresponding air duct outer isolation tube 4.5. The vent 4.2.1 is located at the end plate 4.2 in the space defined by the outer surface of the air duct inner isolation tube 4.4.1 and the vertical mill valve blade assembly 4.1 and other components. The smallest cylindrical surface determined by the position of the vent 4.2.1 at the end plate 4.2 surrounds the air duct outer isolation tube 4.5. In order to ensure the corresponding sealing, wool felt (not shown in the figure) is adhered to the corresponding position of the shell end wall 3.1 adjacent to the outer end surface of the air duct isolation tube 4.5 to prevent hot air from flowing out of the gap between the air duct isolation tube 4.5 and the end wall air duct isolation tube 3.8. Similarly, wool felt (not shown in the figure) may be adhered to the cylindrical surface of the end ring 4.3 close to the cylinder body 3.21 to prevent hot air from flowing out of the hot air flow channel and material particles from entering the hot air flow channel to the greatest extent. In order to simplify the structure and reduce the cost of inspection and maintenance, the aforementioned wool felt structure may be omitted. Instead, two grain guide ports 4.6 may be provided on the end ring 4.3, an upper grain passage port 3.23 may be provided at the lower end of the corresponding barrel body 3.21, and a lower grain passage port 3.43 may be provided on the side wall 3.42 and communicate with the upper grain passage port 3.23. The grain guide port 4.6 may be intermittently communicated with the upper grain passage port 3.23. The grains entering between the end plate 4.2 and the end wall body 3.11 may fall into the space surrounded by the four side walls through the grain guide port, the upper grain passage port and the lower grain passage port when the grain guide port 4.6 periodically communicates with the upper grain passage port 3.23 during the rotation of the end ring 4.3, and merge into the mainstream of the dried material [that is, merge into the material group that falls into the space surrounded by the four vertical side walls under the rotation drive of the core assembly of the vertical mill valve]. At this time, correspondingly, a cleaning pipe 3.13 is also provided at the lower end of the end wall body 3.11, one end of the cleaning pipe 3.13 is fixedly connected to the end wall body 3.11, and the other end is detachably fixedly connected to a cleaning pipe opening sealing plate 3.14, so that it is convenient to clean up the materials accumulated between the end plate 4.2 and the end shell wall 3.1.

[0067] Preferably, the front and rear side walls 3.42 are provided with an observation window 3.44 either individually or simultaneously, and the observation window 3.44 can be detachably fixed with an observation glass 3.9 [the specific structural details are not described in detail here because of the simple technology]. In this embodiment, the front and rear side walls 3.42 are provided with an observation window 3.44 at the same time, and the connection structure of the observation glass 3.9 and the observation window 3.44 is simple and well-known technology, and is not described here.

[0068] Preferably, the middle side wall protrusion 3.31 and the middle side wall outer wall 3.32 are manufactured separately and then can be detachably connected to form the main structure of the middle side wall 3.3. In this embodiment, a plurality of threaded holes are evenly distributed on the middle side wall protrusion 3.31, and the middle side wall outer wall 3.32 and the middle side wall protrusion 3.31 are detachably connected together by a bolt structure.

[0069] Embodiment 2:

[0070] like Figure 5-Figure 8 As shown, the difference between this embodiment and the first embodiment lies in the detachable connection structure of the middle side wall protrusion 3.31 and the middle side wall outer wall 3.32. In this embodiment, the middle side wall protrusion 3.31 is provided with a plurality of connection grooves with a trapezoidal cross section extending left and right, and the middle side wall outer wall 3.32 is correspondingly provided with a plurality of connection protrusions with a trapezoidal end face that are slidably matched with the connection grooves with a trapezoidal cross section.

[0071] Embodiment three:

[0072] like Figure 9-10 As shown, in the third embodiment, the structure of the middle side wall protrusion 3.31 is the same as that of the middle side wall protrusion 3.31 in the second embodiment, but the structure of the middle side wall outer wall 3.32 is different from that of the middle side wall outer wall 3.32 in the second embodiment. The detachable connection structure of the middle side wall protrusion 3.31 and the middle side wall outer wall 3.32 in the third embodiment also includes a plurality of intermediate connection blocks 3.33, the outer side of the intermediate connection block 3.33 has a rectangular cross section, and the inner side is a trapezoidal connection protrusion whose cross section is slidably adapted to the trapezoidal connection groove, and a plurality of pits are provided on the corresponding middle side wall outer wall 3.32, and the outer side of the intermediate connection block 3.33 is located in these pits and is fixedly connected to the middle side wall outer wall 3.32 by a countersunk bolt structure, and the middle side wall protrusion 3.31 realizes the re-detachable connection between the middle side wall outer wall 3.32 and the middle side wall protrusion 3.31 through the sliding fit of the trapezoidal connection groove and the trapezoidal connection protrusion on the corresponding intermediate connection block 3.33.

[0073] The specific embodiments described above are only preferred implementations of the present invention, and are not intended to limit the specific implementation structure and implementation scope of the present invention. For example, the present invention can also be used for drying some wet materials such as grass. In fact, some equivalent changes can also be made according to the shape, structure and design purpose described in the present invention. Therefore, all equivalent changes made according to the shape, structure and design purpose described in the present invention should be included in the protection scope of the present invention, that is, these equivalent changes should be protected by the present invention.

Claims

1. A vertical mill air lock feeding valve, comprising a feeding hopper, a main shaft, a housing assembly, and a vertical mill valve core component; the vertical mill valve core component comprises a vertical mill valve blade component, an end plate, and an end ring; the left and right ends of the vertical mill valve blade component are respectively fixedly connected to an end plate, the outer ends of the left and right end plates are respectively fixedly connected to one end of the corresponding end ring, and the other end of the end ring is located between the end plate and the end wall body and close to the end wall body; its characteristics are: The shell assembly includes a shell end wall, a spacer cylinder, a middle side wall, and a base assembly; The shell end wall comprises an end wall body and an air duct fixedly connected to the upper end of the end wall body; The spacer cylinder includes a cylinder body and a cylinder flange; the left and right spacer cylinders are respectively connected to the corresponding end wall bodies through the cylinder flanges; The housing base assembly includes a bottom plate, four vertical side walls that are parallel or perpendicular to each other; The left and right cylinder bodies are fixedly connected to the upper ends of the vertical side walls; The left and right side walls of the feeding hopper are perpendicular to the main axis, the front and rear side walls of the feeding hopper are parallel to the main axis, and the distance between the upper ends of the two is greater than the distance between the lower ends; the feeding hopper is fixedly connected to the barrel body; The middle side wall includes a middle side wall protrusion and a middle side wall outer wall; the inner surface of the middle side wall protrusion and the inner arc cylindrical surface of the corresponding part of the barrel body form a cylindrical arc cylindrical surface, and the left and right end surfaces of the middle side wall protrusion are adjacent to the corresponding end surfaces of the barrel body; the middle side wall outer wall is respectively connected to the feeding hopper and the barrel body except for the part connected to the middle side wall protrusion; The two ends of the main shaft are fixedly connected to the corresponding end plates and then respectively connected to the corresponding end wall bodies in a sealing manner. The leftmost end of the main shaft is connected to the right end of the output shaft of the reduction motor in a transmission manner. The end plate is provided with a plurality of vents. The left and right air ducts, the vents on the left and right end plates and the space surrounded by the corresponding surfaces of the main shaft and a plurality of vertical mill valve blade assemblies, the outer side surfaces of the left and right end plates and the space surrounded by the corresponding surfaces of the end wall body, the end ring, the spacer cylinder and the main shaft together form a hot air channel. The hot air enters the hot air channel from the air duct on one side and leaves the hot air channel through the air duct on the other side. The reduction motor drives the core assembly of the vertical mill valve to rotate clockwise. It also includes a graphite packing assembly, which includes a graphite packing body, a graphite packing mounting seat, a graphite packing mounting seat cover, and an elastic gasket; the graphite packing mounting seat is fixedly connected to the corresponding end wall body, and the elastic gasket is arranged between the graphite packing mounting seat and the graphite packing mounting seat cover.

2. The vertical mill air lock feeding valve according to claim 1 is characterized in that: The vertical mill valve blade assembly includes a plurality of scrapers and a scraper fixing base equal to the number of scrapers; the scraper fixing base is U-shaped, the bottom of the scraper fixing base is tangent to the same circumference, the side walls of the scraper fixing base are connected together in sequence, and the left and right ends of the scraper fixing base are respectively welded to the corresponding end plates to realize the structure in which the left and right ends of the vertical mill valve blade assembly are respectively fixedly connected to an end plate, and the inner end of the scraper is fixedly connected to the outer end of a different scraper fixing base in sequence.

3. The vertical mill air lock feeding valve according to claim 1 is characterized in that: A material blocking device is arranged behind the front side wall of the feeding hopper; the material blocking device comprises a swing shaft and a baffle; the upper end of the baffle is fixedly connected to the swing shaft, and the left and right ends of the swing shaft are rollingly supported on the left and right side walls of the feeding hopper.

4. The vertical mill air lock feeding valve according to claim 1 is characterized in that: A feeding hopper fixed wall is fixedly connected to the upper ends of the left and right barrel main bodies respectively, and the left and right side walls of the feeding hopper and the feeding hopper fixed wall are detachably fixedly connected together.

5. The vertical mill air lock feeding valve according to claim 1 is characterized in that: It also includes a bearing assembly; the graphite packing body is arranged in the graphite packing mounting seat, and the graphite packing mounting seat and the graphite packing mounting seat cover are detachably connected; the bearing assembly includes a bearing seat fixedly connected to the end shell wall and a bearing arranged in the bearing seat; The main shaft includes a main shaft middle section, which includes, from the right to the right, an end plate right connecting section fixedly connected to the right end plate, a packing body right connecting section connected to the middle hole of the graphite packing body, and a bearing right connecting section connected to the bearing in the bearing assembly; from the left to the left, the main shaft middle section includes, from the right to the left, an end plate left connecting section fixedly connected to the left end plate, a packing body left connecting section connected to the graphite packing body, a bearing left connecting section connected to the bearing in the bearing assembly, and a motor connecting section connected to the right end of the output shaft of the reduction motor; The diameter of the middle section of the main shaft is larger than the diameter of the left and right connecting sections of the end plate, the diameter of the left and right connecting sections of the end plate is larger than the diameter of the left and right connecting sections of the packing body, the diameter of the left and right connecting sections of the packing body is equal to the diameter of the left and right connecting sections of the bearing, and the diameter of the left connecting section of the bearing is equal to or larger than the diameter of the motor connecting section; The right side surface of the left graphite packing body abuts against the left side surface of the left connecting section of the end plate, and the left side surface of the left graphite packing body abuts against the right side surface of the graphite packing mounting seat cover in the left graphite packing assembly; the left side surface of the right graphite packing body abuts against the right side surface of the right connecting section of the end plate, and the right side surface of the right graphite packing body abuts against the left side surface of the graphite packing mounting seat cover in the right graphite packing assembly.

6. The vertical mill air lock feeding valve according to claim 1 is characterized in that: The core components of the vertical mill valve also include components inside the air duct isolation pipe and an air duct outer isolation pipe; the shell end wall also includes an end wall air duct isolation pipe; The components inside the air duct isolation tube include an air duct isolation tube, a left connecting circular plate, and a right connecting circular plate; the left and right connecting circular plates are respectively fixedly connected to the left and right ends of the air duct isolation tube, and the left and right connecting circular plates are respectively fixedly connected to the corresponding end plates; the inner end of the air duct outer isolation tube is fixedly connected to the outer plate surface of the corresponding end plate; the outer end of the end wall air duct isolation tube is respectively fixedly connected to the corresponding shell end wall, and the free end is inserted into the corresponding air duct outer isolation tube; The position of the vent at the end plate is within the space defined by the outer surface of the isolation tube in the air duct and the vertical mill valve blade assembly. The minimum cylindrical surface determined by the position of the vent at the end plate surrounds the isolation tube outside the air duct.

7. The vertical mill air lock feeding valve according to claim 1 is characterized in that: The end ring is provided with two grain guide openings, the lower end of the corresponding barrel body is provided with an upper grain passage opening, and the side wall is provided with a lower grain passage opening connected to the upper grain passage opening. The grain guide openings are intermittently connected to the upper grain passage opening. The grains entering between the end plate and the end wall body will fall into the space surrounded by the four side walls through the grain guide openings, the upper grain passage openings and the lower grain passage openings when the grain guide openings are periodically connected to the upper grain passage opening during the rotation of the end ring, and merge into the main flow of the dried material.

8. The vertical mill air lock feeding valve according to claim 7 is characterized in that: A grain cleaning pipe is also arranged at the lower end of the end wall body, one end of the grain cleaning pipe is fixedly connected to the end wall body, and the other end is detachably fixedly connected to a grain cleaning pipe opening sealing plate.

9. The vertical mill air lock feeding valve according to claim 1 is characterized by: The front and rear side walls are provided with an observation window individually or simultaneously, and the observation window is detachably provided with an observation glass.

10. The vertical mill air lock feeding valve according to claim 1 is characterized in that: The middle side wall protrusion and the middle side wall outer wall are manufactured separately and then can be separated and connected to form the main structure of the middle side wall.

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