A hopper mechanism for crushing powder into blocks for producing enamel glaze

Abstract

The present invention discloses a hopper mechanism for crushing bulk powder for the production of enamel glaze, belonging to the technical field of enamel glaze production equipment. The hopper mechanism includes a hopper and a vertically arranged cylindrical discharge pipe connected to the lower port of the hopper. The hopper has an upper cylindrical inner cavity and a lower conical inner cavity. The hopper mechanism also includes a milling machine and a support body located below the discharge pipe for mounting the milling machine. A main material control switch is provided at the lower port of the discharge pipe. The top of the milling machine has a cutter head assembly with a blade facing upward that can rotate and rise and fall. The cutter head assembly can radially expand and contract the milling surface. When in use, the main material control switch is turned on, and the cutter head assembly mills and pushes the bulk powder from the bottom upward from the lower port of the tube hole of the discharge pipe, so that the bulk powder in the hopper from the discharge pipe is milled and crushed and then falls into the trough-shaped conveyor belt below.

Description

Technical Field

[0001] The invention relates to a hopper mechanism for crushing powder into blocks for producing enamel glaze, belonging to the technical field of enamel glaze production equipment. Background Art

[0002] Enamel material is a snowflake-shaped powder formed by mixing multiple raw materials in high proportion and then refining them at high temperature. It is widely used on the surface of products to form a hard and smooth surface protective layer. It not only makes the surface of the product smooth and beautiful, but more importantly, it can isolate the product from the environment and prevent the surface of the product from corrosion.

[0003] In the above-mentioned process of mixing multiple raw materials in proportion, a trough-shaped conveyor belt leading to a mixing pool is generally used. Various hoppers are set along the trough-shaped conveyor belt. The discharge ports of the hoppers are all aligned with the trough of the trough-shaped conveyor belt. When in use, the system controls the discharge of the raw materials into the trough of the trough-shaped conveyor belt according to their respective flow control standards.

[0004] The enamel glaze material factory generally sets the hopper with the hopper mouth at the same level as the second floor of the workshop, so that personnel and machinery can pour raw materials into the hopper on the second floor. The trough conveyor belt is set close to the ground on the first floor. The discharge port of the hopper is located above the trough of the trough conveyor belt and close to the trough mouth. There is a vertical discharge pipe between the discharge port and the hopper.

[0005] The raw materials loaded into the hopper are all in powder form. Among the various powdered raw materials, some have the characteristic of forming lumps (e.g., caused by crystallization) if they are not flowing or stirred for a certain period of time. In actual production, it is impossible for these lumpy raw materials loaded into the hopper to be used up just before each shutdown due to process requirements (when the conveyor belt stops feeding the mixing tank). The raw materials remaining in the discharge pipe and hopper will form lumps and lose fluidity after even a short period of downtime. In particular, the raw materials with greater pressure at the bottom will form harder lumps. Workers can only strike the discharge pipe with a hammer to break the lumps into pieces and flow down, which is very time-consuming and labor-intensive. After repeated use, some factories have simply abandoned the hopper and switched to manual addition of materials according to the amount. This obviously does not meet the requirements of safe and efficient automated production. Summary of the Invention

[0006] The problem to be solved by the present invention is how to break up the powder materials in the hopper so that the hopper containing the raw materials which are easy to form lumps can be used normally.

[0007] In view of the above problems, the technical solution proposed by the present invention is:

[0008] A hopper mechanism for crushing bulk powder for enamel glaze production comprises a hopper and a vertically arranged cylindrical tube connected to the lower end of the hopper. The hopper has an upper cylindrical inner cavity and a lower conical inner cavity. The mechanism also includes a milling machine and a support body located below the tube for mounting the milling machine. A main material control switch is provided at the lower end of the tube. The top of the milling machine has a rotating and elevating cutter head assembly with an upward-facing blade. The cutter head assembly is capable of radially expanding and contracting the milling surface. During operation, the main material control switch is turned on, and the cutter head assembly mills and pushes the bulk powder upward from the lower end of the tube hole of the tube hole, causing the bulk powder in the tube to be milled and crushed and then fall into the trough-shaped conveyor belt below.

[0009] The milling machine also includes a power shaft and a power assembly for driving the power shaft to rotate and lift. The cutter head assembly is installed at the top end of the power shaft, and the power assembly establishes a driving relationship with the power shaft at the lower end of the power shaft.

[0010] The cutter head assembly includes a blade arm 1, a blade arm 2 and a blade arm 3. There are at least two blade arms 1, with equal arc lengths, which are arranged on the outer peripheral surface of the top end of the power shaft. The blade arms 2 33 are equal in number to the blade arms 1, and are respectively arranged on the lower side of each blade arm and can slide along their respective blade arms 1. The ends of blade arms 1 and 2 close to the power shaft are inner ends, and the ends away from the power shaft are outer ends. The inner end of blade arm 1 is connected to the power shaft so that blade arm 1 and the blade arm 2 can rotate with the power shaft. A retraction spring is provided between blade arm 2 and blade arm 1, and a centrifugal hammer is provided on blade arm 2. The blade arm 3 is provided at the top end of the power shaft, and blade teeth are provided on the upper sides of blade arms 1, 2 and 3.

[0011] The inner end of the knife arm 1 is hingedly connected to the power shaft through a hinge shaft, and the outer end of the knife arm 1 can rotate freely up and down around the hinge shaft. When the knife arm 1 is in a horizontal state, the diameter of the circle drawn by the horizontal rotation of the outer end of the knife arm 1 is larger than the hole diameter of the discharge pipe and smaller than the inner diameter of the cylindrical inner cavity of the hopper.

[0012] The knife arm is set horizontally, the inner end of the knife arm is fixedly connected to the power shaft, the knife arm is set horizontally, the inner end of the knife arm is fixedly connected to the power shaft, and the outer end of the knife arm is close to the inner wall of the tube hole of the feeding pipe.

[0013] The support body includes a top seat plate and a base plate, a guide column is provided between the top seat plate and the base plate, and a guide groove with a rectangular cross-section is provided on the guide column. The front side wall and the rear side wall of the guide groove are rack grooves, and a rack is provided in the rack groove. A notch is provided on the left side wall or the right side wall of the guide groove, and an axial through hole is provided on the top seat plate, and the axial through hole is coaxial with the discharge pipe.

[0014] The drive assembly includes a guide block, a rotation drive unit that drives the power shaft to rotate, and a lifting drive unit that drives the power shaft to lift. The rotation drive unit includes a motor 1 and a transmission box. The guide block is located in the guide groove and can slide up and down. One end of the transmission box is fixed to the upper surface of the guide block in the guide groove and is connected to the lower end of the power shaft through gear meshing in the box. The other end of the transmission box is connected to the output shaft 1 of the motor 1 outside the slot through gear meshing in the box; the lifting drive unit includes a motor 2 and a lifting seat. The lifting seat is located in the guide groove below the guide block, and its front and rear sides are respectively provided with a lifting drive gear meshed with the rack. The motor 2 is arranged outside the slot and is connected to the lifting seat through the output shaft 2. When the lifting drive gear rotates to drive the lifting seat to rise, the guide block is pushed up by the lifting seat. When the lifting drive gear rotates to drive the lifting seat to descend, all milling device components above the guide block follow and descend under the action of gravity.

[0015] A guide sleeve for guiding the lifting and lowering of the power shaft is provided on the upper surface of the top seat plate. The power shaft is sleeved in the pipe hole of the guide sleeve and can slide up and down.

[0016] A material guide is provided on the guide sleeve below the discharge pipe to catch the crushed powder and guide it to the trough-shaped conveyor belt. The material guide includes a connecting base plate at the bottom and a material receiving barrel provided on the connecting base plate. The upper end opening of the material receiving barrel is located directly below the lower end port of the discharge pipe and there is a gap between the two. The lower part of the barrel hole of the material receiving barrel is provided with an inclined guide plate for the sliding of powder. A discharge hole and a material guide pipe connected to the discharge hole are provided on the side wall of the material receiving barrel at the lowest point of the inclined guide plate. A through hole for the power shaft to pass through is provided on the inclined guide plate and the connecting base plate. The barrel hole diameter of the material receiving barrel is equal to the tube hole diameter of the discharge pipe. The shortest distance from the upper end port of the material receiving barrel to the inclined guide plate is greater than the vertical height of the cutter head assembly. The cutter head assembly under non-working conditions is located in the barrel hole of the material receiving barrel.

[0017] The main material control switch includes a switch panel in which a circular opening panel and a closing panel are formed as one body, a rotating sleeve arranged on one side of the switch panel and a support shaft for installing the rotating sleeve. The opening panel has a knife hole with an aperture consistent with the aperture of the tube hole of the discharge pipe. The knife hole has an annular sealing ring edge on the surrounding open panel. The lower end of the support shaft is fixed on the top seat plate. By rotating the switch panel, the closing panel can enter the gap between the receiving barrel and the discharge pipe to seal the discharge pipe. By continuing to rotate the switch panel, the knife hole of the opening panel can be aligned with the tube hole of the discharge pipe. The sealing ring edge is just located between the tube wall of the discharge pipe and the tube wall of the receiving barrel to seal the gap between the tube wall of the discharge pipe and the tube wall of the receiving barrel.

[0018] Beneficial effects: The powder material in agglomerates can be broken up without knocking the hopper device, and the cutter head assembly used for breaking up the powder material does not affect the normal flow of the unagglomerated powder material, so that the hopper can be used normally; the equipment is generally vertically set and moves vertically within the range of the hopper, and occupies a small horizontal space, which does not affect the installation of other equipment; the operation and control are simple and the maintenance is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional schematic diagram of a hopper mechanism for crushing powder into agglomerates for producing enamel glaze according to the first embodiment;

[0020] Figure 2 This is a cross-sectional schematic diagram of a hopper mechanism for crushing powder into agglomerates for producing enamel glaze according to Example 1;

[0021] Figure 3 It is a plan view of the milling machine described in Example 1;

[0022] Figure 4 This is a three-dimensional schematic diagram of the support body described in Example 1;

[0023] Figure 5 This is a schematic diagram of the cutter head assembly in the hole of the feed pipe according to Example 1;

[0024] Figure 6 This is a cross-sectional schematic diagram of the centrifugal hammer according to Example 1 installed on the blade arm 2;

[0025] Figure 7 This is a schematic structural diagram of the blade arm 2 and the sliding rod described in Example 1;

[0026] Figure 8 This is a three-dimensional schematic diagram of the assembly of the blade arm 1, blade arm 2, and centrifugal hammer, etc., described in Example 1;

[0027] Figure 9 Schematic diagram of the working condition of the cutter head assembly described in Example 1, showing the cutter head assembly rotating in the feed pipe to mill agglomerated powder. Arrow A in the figure represents the rotation direction of the power shaft, arrow B represents the upward movement of the power shaft, and F1 represents the centrifugal force generated by the centrifugal hammer.

[0028] Figure 10 Schematic diagram of the force applied to the blade arm 1 after the cutter head assembly enters the conical inner cavity according to Example 1. Arrow A in the figure represents the rotation direction of the power shaft. Arrow B indicating the upward movement of the power shaft is not shown. Arrow F1 represents the centrifugal force generated by the centrifugal hammer, etc., F4 represents the tension exerted by the hinged shaft on the blade arm 1, F5 represents the resultant force of the centrifugal force F1 and the tension F4, F6 represents the vertical component of F5, and F3 represents the gravity exerted on the centrifugal hammer, etc. In the figure, F6 is greater than F3. The outer end of the blade arm 1 rotates upward from an oblique downward direction, achieving the outward expansion of the first milling surface.

[0029] Figure 11 for Figure 10 Schematic diagram of force analysis, the larger F1 is, the larger F6 is;

[0030] Figure 12 This is a schematic diagram of the cutter head assembly according to Example 1 after entering the conical inner cavity. The figure shows that the centrifugal force F5 generated by the second cutter arm and the centrifugal hammer is greater than the tension F2 of the retraction spring, and the second cutter arm begins to slide outward, achieving the second expansion of the milling surface.

[0031] Figure 13 is a schematic cross-sectional view of the material guide device described in Example 1;

[0032] Figure 14 This is a schematic diagram of the cutter head assembly retracting into the barrel hole of the receiving barrel after the hopper completes batching according to Example 1, and the figure shows that the main material control switch is turned off;

[0033] Figure 15 This is a three-dimensional schematic diagram of the power assembly of Example 1 being assembled on the lower part of the support body;

[0034] Figure 16 This is a partial cross-sectional schematic diagram of the power assembly of Example 1 assembled at the lower part of the support body;

[0035] Figure 17 Schematic cross-sectional view of the guide post described in Example 1;

[0036] Figure 18 Schematic cross-sectional view of the assembly relationship between the lifting drive unit and the guide groove according to the first embodiment;

[0037] Figure 19 Schematic cross-sectional view of the assembly relationship between the rotation drive unit and the guide groove according to the first embodiment;

[0038] Figure 20 This is a schematic diagram of the assembly relationship between the main material control switch, the material discharge pipe and the material guide described in Example 1;

[0039] Figure 21 This is a plan view of the cutter head assembly described in Example 2, showing the cutter head assembly in the bore of the receiving barrel;

[0040] Figure 22 Schematic diagram of the cutter head assembly entering the conical inner cavity under the working condition of Example 2.

[0041] In the figure: 1. Hopper; 11. Cylindrical inner cavity; 12. Conical inner cavity; 2. Feeding tube; 21. Tube hole; 3. Milling device; 31. Cutter head assembly; 311. Cutter arm 1; 312. Cutter arm 2; 3121. Slide rod hole; 3122. Tension spring hole; 3123. Cutter arm 3; 313. Centrifugal hammer; 314. Retraction spring; 315. Slide rod seat; 316. Slide rod; 317. Articulated shaft; 318. Cutter teeth; 319. Fixing pin; 32. Power assembly; 321. Guide block; 322. Rotation drive unit; 3221. Motor 1; 3222. Output shaft 1; 3223. Transmission box; 323. Lifting drive unit; 3231. Motor 2; 3232. Output shaft 2; 3233 , lifting seat; 3234, lifting drive gear; 324, buffer compression spring; 33, power shaft; 4, support body; 41, top seat plate; 42, guide column; 421, guide groove; 4211, notch; 43, base plate; 44, rack; 5, main material control switch; 51, switch panel; 511, open panel; 5111, knife hole; 5112, sealing ring edge; 512, close panel; 52, rotating sleeve; 53, support shaft; 6, material guide; 61, connecting bottom plate; 62, material receiving barrel; 63, barrel hole; 64, inspection door; 65, inclined guide plate; 66, discharge hole; 67, material guide pipe; 68, flow control valve; 7, guide sleeve; 8, gap; 9, grooved conveyor belt; 10, agglomerated powder. DETAILED DESCRIPTION

[0042] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0043] Example 1:

[0044] like Figure 1—4 shows a hopper mechanism for crushing bulk powder for the production of enamel glaze, comprising a hopper 1 and a vertically arranged cylindrical discharge pipe 2 connected to the lower end of the hopper 1, the hopper 1 having an upper cylindrical inner cavity 11 and a lower conical inner cavity 12, characterized in that it also includes a milling device 3 and a support body 4 located below the discharge pipe 2 for mounting the milling device 3, a main material control switch 5 is provided at the lower end of the discharge pipe 2, the top of the milling device 3 has a cutter head assembly 31 with a blade facing upward that can be rotated and lifted, the cutter head assembly 31 can radially expand and contract the milling surface, when in use, the main material control switch 5 is turned on, the cutter head assembly 31 mills and pushes the bulk powder from the bottom upward from the lower end of the tube hole 21 of the discharge pipe 2, so that the bulk powder in the discharge pipe 2 to the hopper 1 is milled and crushed and then falls into the trough-shaped conveyor belt 9 below. Because the cutter head assembly 31 can radially expand and contract its milling surface, the cutter head assembly 31 can adapt to changes in the diameter of the aperture from the feed pipe 2 to the hopper 1 during the upward milling process, ensuring that even powder lumps adhering to the wall after the upper milling surface is enlarged can be milled. This solves the problem of existing hoppers that require knocking on the outer tube to break up the powder lumps when the powder lumps in the hopper, or even knocking on the outer tube to fail to break up the powder lumps, resulting in the hopper being directly discarded.

[0045] The milling machine 3 also includes a power shaft 33 and a power assembly 32 that drives the power shaft 33 to rotate and lift. The cutter head assembly 31 is installed at the top end of the power shaft 33, and the power assembly 32 establishes a driving relationship with the power shaft 33 at the lower end of the power shaft 33, which will be further explained later.

[0046] like Figure 5As shown in FIG. 8 , the cutter head assembly 31 includes a cutter arm 1 311, a cutter arm 2 312, and a cutter arm 3 3123. There are at least two cutter arms 1 311, which are of equal arc length and are arranged on the outer peripheral surface of the top end of the power shaft 33. The number of cutter arms 2 33 is equal to that of cutter arms 1 311, which are respectively arranged on the lower side of each cutter arm 1 311 and can slide along their respective cutter arms 1 311. The ends of the cutter arms 1 311 and the cutter arms 2 312 close to the power shaft 33 are inner ends, and the ends away from the power shaft 33 are inner ends. One end is the outer end, and the inner end of the knife arm 1 311 is connected to the power shaft 33, so that the knife arm 1 311 and the knife arm 2 312 can rotate with the power shaft 33. A retraction spring 314 is provided between the knife arm 2 312 and the knife arm 1 311, and a centrifugal hammer 313 is provided on the knife arm 2 312. The knife arm 3 3123 is provided at the top of the power shaft 33, and the upper sides of the knife arm 1 311, the knife arm 2 312 and the knife arm 3 3123 are all provided with knife teeth 318. During application, when the cutter head assembly 31 is located in the tube hole 21 of the feeding tube 2 with the smallest diameter, the power shaft 33 rotates at a relatively low speed, and the first cutter arm 311 mills the powder material agglomerated in the tube hole 21 of the feeding tube 2. The second cutter arm 312 rotates along with the first cutter arm 311. Due to the relatively low speed, the tension F2 of the retraction spring 314 overcomes the centrifugal force F1 generated by the centrifugal hammer 313 on the second cutter arm 312, so that the second cutter arm 312 remains below the first cutter arm 311 and remains in a retracted state. Figure 12 When the cutter head assembly 31 enters the tapered inner cavity 12 of gradually increasing diameter from the bore 21 of the smallest feed tube 2, the power shaft 33 rotates at a relatively high speed, increasing the centrifugal force F1 exerted by the centrifugal hammer 313 on the second cutter arm 312. This force F1 overcomes the tension F2 exerted by the retraction spring 314, causing the second cutter arm 312 to extend and mill the agglomerated powder material in the outer annular region outside the first cutter arm 311. When milling is complete and the first cutter arm 311 is lowered or stopped, and the centrifugal force F1 exerted by the centrifugal hammer 313 on the second cutter arm 312 decreases or disappears, the second cutter arm 312 is pulled back by the retraction spring 314, completing its retraction, and the cutter head assembly can smoothly descend into the bore 21 of the feed tube 2.

[0047] The arrangement of the blade teeth 318 facilitates the feeding of agglomerated powder during milling. The radial arrangement of the blade teeth 318 on the plurality of blade arms 1 311 is staggered relative to each other, so that the blade teeth 318 on the plurality of blade arms 1 311 can complement each other radially, thereby forming a complete milling surface during milling.

[0048] Furthermore, a hanging slide seat 315 is provided below the inner end of the knife arm 1 311, and two upper and lower slide bars 316 are provided on the front end surface of the slide seat 315, which extend toward the outer end in parallel with the knife arm 1 311. The knife arm 2 is provided with two upper and lower parallel slide bar holes 3121 along the length direction, and a tension spring hole 3122 is provided between the two slide bar holes 3121. The slide bar hole 3121 and the tension spring hole 3122 both pass through the inner end section and the outer end face of the knife arm 2 312. The two slide bars 316 are respectively inserted into the two slide bar holes 3121 of the knife arm 2 312 and can slide in the slide bar holes 3121. The retraction spring 314 is located in the tension spring hole 3122, and its inner end is fixedly connected to the slide bar seat 315, and its outer end is fixed to the outer end of the tension spring hole 3122 by a fixing pin 319.

[0049] Preferably, only two blade arms 311 are provided.

[0050] like Figure 5 、 9 As shown in Figures 10 and 12, in this embodiment, the inner end of the blade arm 311 is hingedly connected to the power shaft 33 via a hinge shaft 317. The outer end of the blade arm 311 can freely rotate up and down around the hinge shaft 317. When the blade arm 311 is in a horizontal state, the diameter of the circle drawn by the outer end of the blade arm 311 when rotating horizontally is larger than the diameter of the tube hole 21 of the feed pipe 2 and smaller than the inner diameter of the cylindrical inner cavity 11 of the hopper 1. In this way, when the blade head assembly 31 is located in the tube hole 21 of the feed pipe 2 and the tube hole 63 of the receiving tube 62 (see Figure 13 、 14 ), the outer ends of the knife arm 1 311 and the corresponding knife arm 2 312 are in a downward tilted posture, which can significantly extend the length of the knife arm 1 311 and the knife arm 2 312. When the milling rises to the conical inner cavity 12 and the cylindrical inner cavity 11, the knife arm 1 311 and the knife arm 2 312 can obtain two outward extensions in the horizontal direction. The first is the outward extension of the knife arm 1 311 from the oblique downward posture to the horizontal posture, and the second is the outward extension of the knife arm 2 312 horizontally extended.

[0051] It should be noted here that relying on the centrifugal force F1 can only make the knife arm 311 infinitely close to a horizontal posture, but it can never actually reach a truly horizontal posture. The centrifugal force F1 is not provided solely by the centrifugal hammer 313 when it rotates with the power shaft 33, but also includes the centrifugal force generated by the outer end of the knife arm 311 itself and all components provided on the knife arm 311 when they rotate with the power shaft 33.

[0052] like Figure 9 As shown, when the blade arm 1 311 of this embodiment is milled and raised in the tube hole 21 of the discharge tube 2 in an oblique downward posture, the centrifugal force F1 of the centrifugal hammer 313 causes the blade arm 1 311 to press the blade teeth 318 tightly against the milling surface of the agglomerated powder 10, which is a conical surface.

[0053] like Figure 10 As shown in Figures 1 and 11, when the knife arm 1 311 is milled and raised in the conical inner cavity 12 and the cylindrical inner cavity 11, the centrifugal force F1 of the centrifugal hammer 313 causes the knife arm 1 311 to obtain an upward component force F6, and the component force F6 overcomes the gravity F3 on the outer end of the knife arm 1 311, so that the knife arm 1 311 and its belonging knife arm 2 312 approach a horizontal posture, and press the knife teeth 318 tightly against the milling surface of the agglomerated powder 10, which is a conical surface close to a plane.

[0054] Figure 11 This is a schematic diagram of the forces acting on the blade arm 1 311 as its outer end rotates upward and approaches a horizontal state as the blade arm 1 rotates with the power shaft 33. In the figure:

[0055] FI is the centrifugal force of the centrifugal hammer 313 and the outer ends of the blade arm 2 312 and the blade arm 1 311 when they rotate with the power shaft 33;

[0056] F3 is the gravity acting on the centrifugal hammer 313 and the outer ends of the blade arm 2 312 and the blade arm 1 311;

[0057] F4 is the pulling force exerted by the centrifugal hammer 313, the outer end of the blade arm 2 312 and the blade arm 1 311 on the hinge shaft 317 through the blade arm 1 311;

[0058] F5 is the resultant force formed by FI and F4;

[0059] F6 is the component force of F5 in the vertical direction. Before the knife arm 311 reaches the horizontal posture, the larger FI is, the larger F6 is.

[0060] O is a mass point at the outer ends of the centrifugal hammer 313 and the blade arm 2 312 and the blade arm 1 311.

[0061] like Figure 1 、 2 As shown in Figure 4, the support body 4 includes a top seat plate 41 and a base plate 43, a guide column 42 is provided between the top seat plate 41 and the base plate 43, and a guide groove 421 with a rectangular cross-section is provided on the guide column 42. The front side wall and the rear side wall of the guide groove 421 are rack grooves, and a rack 44 is provided in the rack groove. A notch 4211 is provided on the left side wall or the right side wall of the guide groove 421, and an axial through hole is provided on the top seat plate 41, and the axial through hole is coaxial with the discharge pipe 2.

[0062] like Figure 15As shown in FIG. 19 , the power assembly 32 includes a guide block 321, a rotation drive unit 322 for driving the power shaft 33 to rotate, and a lifting drive unit 323 for driving the power shaft 33 to move up and down. The rotation drive unit 322 includes a motor 1 3221 and a transmission box 3223. The guide block 321 is located in the guide groove 421 and can slide up and down. One end of the transmission box 3223 is fixed to the upper surface of the guide block 321 in the guide groove 421 and is connected to the lower end of the power shaft 33 through (teeth meshing in the box). The other end of the transmission box 3223 is connected to the output shaft 1 3222 of the motor 1 3221 through teeth meshing in the box outside the slot 4211. The power shaft 33 is driven to rotate by the motor 1 3221 through the transmission box 3223. The lifting drive unit 323 includes a motor 2 3231 and a lifting seat 3233. The lifting seat 3233 is located in the guide groove 421 below the guide block 321, and has a lifting drive gear 3234 on the front and rear sides thereof that meshes with the rack 44. The second motor 3231 is located outside the slot 4211 and is connected to the lifting seat 3233 through the second output shaft 3232. When the lifting drive gear 3234 rotates to drive the lifting seat 3233 to rise, the lifting seat 3233 pushes the guide block 321 to rise. When the lifting drive gear 3234 rotates to drive the lifting seat 3233 to descend, all the milling machine 3 components above the guide block 321 follow and descend under the action of gravity. This is to prevent the knife arm 2 312 in the cutter head assembly 31 from not fully retracting, and the knife arm 1 311 and the knife arm 2 312 from being forcibly pulled downward by the descending lifting seat 3233 when they are stuck above the conical inner cavity 12 and damaged.

[0063] In order to ensure that the force obtained by the cutter head assembly 31 during the milling and rising process is continuous, a buffer compression spring 324 is provided between the lifting seat 3233 and the guide block 321. When the lifting seat 3233 rises, the buffer compression spring 324 pushes the guide block 321 upward. This can also prevent the cutter head assembly 31 from being forced upward when the lifting seat is started, and can make the force that pushes the cutter head assembly 31 upward a relatively flexible force.

[0064] The above-mentioned internal tooth engagement is a conventional technical means, which means that transmission gears are provided in the transmission box 3223 and the lifting seat 3233, and internal spline teeth or external spline teeth or gears are provided at the outer ends of the output shaft 1 3222, the output shaft 2 3232 and the lower end of the power shaft 33. The specific setting method is determined according to needs. Since it is a conventional technical means, it is not described or illustrated in detail in this article.

[0065] like Figure 2 、 14 As shown, further, a guide sleeve 7 for guiding the lifting and lowering of the power shaft 33 is provided on the upper surface of the top seat plate 41. The power shaft 33 is sleeved in the tube hole of the guide sleeve 7 and can slide up and down.

[0066] like Figure 13 、 14 As shown, a guide sleeve 7 below the feed tube 2 is provided with a guide 6 that catches the crushed powder and guides it to the trough-shaped conveyor belt 9. The guide 6 comprises a connecting base plate 61 at the bottom, and a receiving barrel 62 mounted on the connecting base plate 61. The upper end of the receiving barrel 62 is located directly below the lower end of the feed tube 2, with a gap 8 between them. A slanted guide plate 65 is provided below the bore 63 of the receiving barrel 62 for the powder to slide through. A discharge hole 66 is formed in the sidewall of the receiving barrel 62 at the lowest point of the slanted guide plate 65, and a guide pipe 67 is provided connecting to the discharge hole 66. Both the slanted guide plate 65 and the connecting base plate 61 are provided with through holes for the power shaft to pass through. In this way, the milled powder falls into the receiving barrel 62 and slides from the slanted guide plate 65 into the guide pipe 67, where it is then directed to the trough-shaped conveyor belt 9 below.

[0067] In order to facilitate cleaning inside the material guide tube 67, the material guide tube 67 can be a detachable multi-section arrangement.

[0068] A flow control valve 68 is provided in the material guide pipe 67 .

[0069] The aperture of the barrel hole 63 of the above-mentioned material receiving barrel 62 is equal to the aperture of the tube hole 21 of the discharge pipe 2. The shortest distance from the upper end of the material receiving barrel 62 to the inclined guide plate 65 is greater than the vertical height of the cutter head assembly 31. The cutter head assembly 31 under non-working conditions is located in the barrel hole 63 of the material receiving barrel 62. After the cutter head assembly 31 completes the last operation, it falls back into the barrel hole 63 of the material receiving barrel 62.

[0070] In order to facilitate the maintenance of the cutter head assembly 31 before starting, a maintenance door 64 that can be opened and closed is provided on the side wall of the receiving barrel 62 (see Figure 1 ).

[0071] like Figure 20 As shown, the above-mentioned material control main switch 5 includes a switch panel 51 in which a circular opening panel 511 and a closing panel 512 are formed as one body, a rotating sleeve 52 provided on one side of the switch panel 51, and a support shaft 53 for fitting the rotating sleeve 52. The opening panel 511 has a through-hole 5111 with a hole diameter consistent with the hole 21 of the feed pipe 2. The through-hole 5111 has an annular sealing ring edge 5112 on the surrounding opening panel 511. The lower end of the support shaft 53 is fixed on the top base plate 41. By rotating the switch panel 51, the material control main switch 5 The closing panel 512 enters the gap 8 between the receiving barrel 62 and the discharge pipe 2 to block the discharge pipe 2. Continuing to rotate the switch panel 51 can align the knife hole 5111 of the opening panel 511 with the tube hole 21 of the discharge pipe 2. The sealing ring edge 5112 is just located between the tube wall of the discharge pipe 2 and the tube wall of the receiving barrel 62 to block the gap 8 between the tube wall of the discharge pipe 2 and the tube wall of the receiving barrel 62, so that a relatively closed pipeline is formed between the tube hole 21 of the discharge pipe 2 and the tube hole 63 of the receiving barrel 62, which will not leak material outward.

[0072] After the cutter head assembly 31 completes the last operation and falls back into the barrel hole 63 of the material receiving barrel 62, if the task of feeding the hopper into the trough conveyor belt 9 is also completed, the main material control switch 5 can be turned off. If feeding is still needed, the unagglomerated powder can continue to be poured into the hopper 1 to continue normal feeding. The cutter head assembly 31 located in the material receiving barrel 62 does not prevent the unagglomerated powder 10 from flowing downward.

[0073] Example 2:

[0074] like Figure 21 、 22 As shown, the difference from Example 1 is that: the knife arm 311 is set horizontally, the inner end of the knife arm 311 is fixedly connected to the power shaft 33, and the outer end of the knife arm 311 is close to the inner wall of the tube hole 21 of the discharge tube 2, ensuring that the knife arm 311 can not only mill the powder material attached to the wall into blocks when rotating, but also ensure that the outer end of the knife arm 311 does not contact and rub against the inner wall of the tube hole 21 of the discharge tube 2.

[0075] Since the diameter of the tube hole 21 of the discharge tube 2 is relatively small, the length of the blade arm 1 311 of this design is limited, which determines that the length of the blade arm 2 312 is also limited. Therefore, this embodiment is suitable for situations where the ratio of the diameter of the tube hole 21 of the discharge tube 2 to the diameter of the cylindrical inner cavity 11 of the hopper 1 is relatively large.

[0076] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the scope of protection covered by the present invention. Any modifications in equivalent forms should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A hopper mechanism for crushing powder into agglomerates for producing enamel glazes, comprising a hopper (1) and a vertically arranged discharge pipe (2) having a cylindrical hole connected to a lower port of the hopper (1), wherein the hopper (1) has an upper cylindrical inner cavity (11) and a lower conical inner cavity (12), and is characterized in that: The milling machine (3) and a support (4) located below the feeding tube (2) for mounting the milling machine (3) are provided. A material control main switch (5) is provided at the lower end of the feeding tube (2). The top of the milling machine (3) is provided with a cutter head assembly (31) with a blade facing upwards and capable of rotating and lifting. The cutter head assembly (31) can radially expand and contract the milling surface. When in use, the material control main switch (5) is turned on, and the cutter head assembly (31) is used to feed the powdered material into the block from the bottom upwards through the lower end of the tube hole (21) of the feeding tube (2). Milling is carried out to advance the material into the hopper (1) through the feeding tube (2), so that the powdered material is milled and crushed, and then falls into the trough conveyor (9) below. The milling machine (3) also includes a power shaft (33) and a power assembly (32) for driving the power shaft (33) to rotate and lift. The cutter head assembly (31) is installed at the top end of the power shaft (33). The power assembly (32) establishes a driving relationship with the power shaft (33) at the lower end of the power shaft (33). The cutter head assembly (31) includes a cutter arm ( 311), knife arm two (312) and knife arm three (3123), said knife arm one (311) is at least two, and is provided on the outer peripheral surface of the top end of the power shaft (33). The knife arm two (33) is equal in number to the knife arm one (311), and is respectively provided on the lower side of each knife arm one (311) and can slide along each knife arm one (311). The end of knife arm one (311) and knife arm two (312) close to the power shaft (33) is the inner end, and the end away from the power shaft (33) is the outer end. The inner end of the blade arm (311) is connected to the power shaft (33), so that the blade arm (311) and the blade arm (312) can rotate with the power shaft (33), a retraction spring (314) is provided between the blade arm (312) and the blade arm (311), a centrifugal hammer (313) is provided on the blade arm (312), and the blade arm (3123) is provided at the top end of the power shaft (33), and blade teeth (318) are provided on the upper side surfaces of the blade arm (311), the blade arm (312) and the blade arm (3123).

2. The hopper mechanism for crushing agglomerated powder for the production of enamel glaze according to claim 1, characterized in that: The inner end of the knife arm (311) is hingedly connected to the power shaft (33) via a hinge shaft (317), and the outer end of the knife arm (311) can freely rotate up and down around the hinge shaft (317). When the knife arm (311) is in a horizontal state, the diameter of the circle drawn by the outer end of the knife arm (311) when rotating horizontally is larger than the diameter of the tube hole (21) of the discharge pipe (2) and smaller than the inner diameter of the cylindrical inner cavity (11) of the hopper (1).

3. The hopper mechanism for crushing agglomerated powder for the production of enamel glaze according to claim 1, characterized in that: The knife arm (311) is arranged horizontally, the inner end of the knife arm (311) is fixedly connected to the power shaft (33), and the outer end of the knife arm (311) is close to the inner wall of the tube hole (21) of the discharge tube (2).

4. The hopper mechanism for crushing agglomerated powder for the production of enamel glaze according to claim 1, characterized in that: The support body (4) comprises a top seat plate (41) and a base plate (43), a guide column (42) is provided between the top seat plate (41) and the base plate (43), and a guide groove (421) with a rectangular cross section is provided on the guide column. The front side wall and the rear side wall of the guide groove (421) are rack grooves, and a rack (44) is provided in the rack groove. A notch (4211) is provided on the left side wall or the right side wall of the guide groove (421), and an axial through hole is provided on the top seat plate (41), and the axial through hole is coaxial with the feed tube (2).

5. The hopper mechanism for crushing bulk powder for enamel glaze production according to claim 1, characterized in that: The power assembly (32) includes a guide block (321), a rotation drive unit (322) for driving the power shaft (33) to rotate, and a lifting drive unit (323) for driving the power shaft (33) to lift. The rotation drive unit (322) includes a motor (3221) and a transmission box (3223). The guide block (321) is located in the guide groove (421) and can slide up and down. One end of the transmission box (3223) is fixed to the upper surface of the guide block (321) in the guide groove (421) and is connected to the lower end of the power shaft (33) through gear meshing in the box. The other end of the transmission box (3223) is connected to the output shaft (3222) of the motor (3221) through gear meshing in the box outside the notch (4211). The lifting drive unit (322) includes a motor (3221) and a transmission box (3223). The element (323) includes a second motor (3231) and a lifting seat (3233). The lifting seat (3233) is located in a guide groove (421) below the guide block (321). The front and rear sides of the lifting seat (3233) are respectively provided with a lifting drive gear (3234) meshing with the rack (44). The second motor (3231) is located outside the slot (4211) and is connected to the lifting seat (3233) through a second output shaft (3232). When the lifting drive gear (3234) rotates to drive the lifting seat (3233) to rise, the lifting seat (3233) pushes the guide block (321) to rise. When the lifting drive gear (3234) rotates to drive the lifting seat (3233) to descend, all the milling machine (3) components above the guide block (321) follow and descend under the action of gravity.

6. The hopper mechanism for crushing bulk powder for enamel glaze production according to claim 4, characterized in that: A guide sleeve (7) for guiding the lifting and lowering of the power shaft (33) is provided on the upper surface of the top seat plate (41). The power shaft (33) is sleeved in the tube hole of the guide sleeve (7) and can slide up and down.

7. The hopper mechanism for crushing agglomerated powder for producing enamel glaze according to claim 6, characterized in that: A guide (6) is provided on the guide sleeve (7) below the discharge pipe (2) to receive the crushed powder and guide it to the trough-shaped conveyor belt (9). The guide (6) includes a connecting base plate (61) at the bottom, and a receiving barrel (62) provided on the connecting base plate (61). The upper end opening of the receiving barrel (62) is located directly below the lower end of the discharge pipe (2) with a gap (8) therebetween. The lower part of the barrel hole (63) of the receiving barrel (62) is provided with an inclined guide plate (65) for the powder to slide. The receiving barrel (62) is provided with an inclined guide plate (65) at the lowest point of the inclined guide plate (65). The side wall of the barrel (62) is provided with a discharge hole (66) and a guide pipe (67) connected to the discharge hole (66), and the inclined guide plate (65) and the connecting bottom plate (61) are both provided with a through hole for the power shaft to pass through; the diameter of the barrel hole (63) of the receiving barrel (62) is equal to the diameter of the tube hole (21) of the discharge pipe (2), the shortest distance from the upper end of the receiving barrel (62) to the inclined guide plate (65) is greater than the vertical height of the cutter head assembly (31), and the cutter head assembly (31) is located in the barrel hole (63) of the receiving barrel (62) under non-working conditions.

8. The hopper mechanism for crushing agglomerated powder for the production of enamel glaze according to claim 7, characterized in that: The material control main switch (5) comprises a switch panel (51) formed as a whole with a circular opening panel (511) and a closing panel (512), a rotating sleeve (52) provided on one side of the switch panel (51), and a support shaft (53) for fitting the rotating sleeve (52), the opening panel (511) having a through-hole (5111) having a hole diameter consistent with the hole (21) of the feed tube (2), the through-hole (5111) having an annular sealing edge (5112) on the surrounding opening panel (511), and the lower end of the support shaft (53) being fixed. The switch panel (51) is fixed on the top base plate (41), and the switch panel (51) is rotated so that the closing panel (512) can enter the gap (8) between the receiving barrel (62) and the discharge pipe (2) to block the discharge pipe (2). The switch panel (51) is further rotated so that the knife hole (5111) of the opening panel (511) is aligned with the tube hole (21) of the discharge pipe (2), and the sealing ring edge (5112) is just located between the tube wall of the discharge pipe (2) and the tube wall of the receiving barrel (62), thereby blocking the gap between the tube wall of the discharge pipe (2) and the tube wall of the receiving barrel (62).

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