Depolymerization wheel blade fixing structure and depolymerization wheel

Abstract

The invention discloses a depolymerization wheel blade fixing structure and a depolymerization wheel. The fixing structure comprises at least two turntables which are arranged up and down; a plurality of blade seats which are arranged at intervals are connected between the adjacent rotating discs in the circumferential direction; a slot is formed in the blade seat, one end of the blade is embedded into the slot, and the other end of the blade is exposed; and the blade is made of a ceramic material. The invention also comprises a depolymerization wheel comprising the blade fixing structure. The ceramic blade can be protected from being broken and falling off easily during high-speed rotation, impurities generated by blade abrasion are effectively prevented from being mixed into materials, and the material quality is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of material depolymerization, and particularly to a fixing structure for depolymerization wheel blades and a depolymerization wheel. Background Art

[0002] For the depolymerization wheel used in existing depolymerization equipment (such as honeycomb mills), its blades are usually made of stainless steel. The main fixing method for the blades is as follows: a number of single notches are opened on the upper and lower turntables, and the blades are respectively clamped into the corresponding notch grooves, and then fixed by axial pressing of the upper and lower turntables. However, this fixing method has the following defects: due to the extremely high rotation speed of the wheel body and the large number of blades on the wheel body, the fixing method cannot effectively ensure the stability of the blades, resulting in a relatively high probability of blade detachment. Once a blade detaches, the entire depolymerization wheel and the inner wall of the depolymerization equipment cylinder can no longer be used, thus bringing relatively large economic losses and safety hazards.

[0003] Furthermore, on the one hand, the blades made of stainless steel material have poor wear resistance. When the rotation speed of the wheel body is high, the wear of the blades by the material is large; and as long as one of the blades is worn, the worn impurities will mix into the material. If there are strict requirements for the impurities in the material, the expected standard may not be achieved. On the other hand, it is difficult to replace the blades after wear. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above deficiencies of the prior art and provide a depolymerization wheel blade fixing structure and a depolymerization wheel that are convenient for disassembly and assembly, have good wear resistance, and are not easily detached.

[0005] The technical solution of the present invention is as follows: A depolymerization wheel blade fixing structure of the present invention includes at least two turntables arranged up and down; a number of blade seats arranged at intervals in the circumferential direction are connected between adjacent turntables; a slot is opened on the blade seat, and one end of the blade is embedded in the slot and the other end is exposed.

[0006] Further, the upper and lower turntables limit and fix the axial direction of the blades and the blade seats, and the blade seats limit and fix the radial direction of the blades.

[0007] Further, the blades are made of ceramic material.

[0008] Further, at least one jack is opened at the position where the turntable is connected to the blade seat, and a plug-in member is provided at the position of the blade seat facing the jack, and the plug-in member of the blade seat is inserted into the jack of the turntable for fixation.

[0009] Further, the slot is opened on the outer end face of the blade seat along the height direction, one end of the blade is inserted into the slot, and the other end extends along the turntable.

[0010] Furthermore, the shape of the end of the blade connected to the slot matches the slot, enabling the blade to fit tightly with the slot after insertion and preventing the blade from falling off. For example, the slot can be, but is not limited to, a wedge-shaped slot, a dovetail slot, or a T-shaped slot.

[0011] Furthermore, the end of the blade connected to the slot extends out a shape matching the slot, and the insertion depth of the blade into the slot is designed to ensure that the blade does not fall off after insertion.

[0012] Furthermore, at least one block-shaped or columnar structure extends upward and downward respectively from the rear side of the blade seat, and at least one jack is provided at the position where the turntable is connected to the blade seat.

[0013] Furthermore, the slot penetrates through the upper and lower end faces of the blade seat, and the upper end face of the blade and the blade seat contacts the upper turntable, and the lower end face contacts the lower turntable.

[0014] Furthermore, the two side faces of the blade seat are inclined planes and gradually narrow from the rear end face to the front end face of the blade seat.

[0015] A depolymerization wheel of the present invention includes the depolymerization wheel blade fixing structure described in any one of the foregoing items.

[0016] Advantages of the present invention: (1) By adding a blade seat and inserting the blade into the slot of the blade seat, compared with only setting the blade between the upper and lower turntables, the probability of the blade falling off is greatly reduced, and the safety performance of the equipment is improved; especially when using ceramic blades, the cooperation of the blade seat is more needed to protect the ceramic blades from being easily broken and falling off during high-speed rotation; (2) By designing the slot on the blade seat into a wedge-shaped slot or a dovetail slot, etc., the probability of the blade falling off can be further reduced, making the probability of the blade falling off basically zero; (3) When the blade needs to be replaced, only need to pull out the blade from the slot, which greatly improves the disassembly and assembly efficiency; (4) By making the blade of ceramic material, on the one hand, the wear resistance of the blade can be greatly improved, and the maintenance cost of the equipment can be greatly reduced; on the other hand, it effectively avoids the impurities generated by blade wear from mixing into the material, thereby reducing the content of material impurities and greatly improving the material quality; furthermore, combining the blade seat with the ceramic blade, due to the brittleness of the ceramic, the design of the blade seat can prevent the blade from being crushed by the upper and lower turntables. Description of the drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of the entire fixing structure of Embodiment 1 of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the blade seat of Embodiment 1 of the present invention; Figure 3It is a schematic three-dimensional structure diagram of the blade in Embodiment 1 of the present invention.

[0018] Explanation of reference numerals: 1. Upper turntable; 2. Lower turntable; 3. Blade seat; 4. Blade; 11. Insertion hole; 31. Slot; 32. Limit block. Specific embodiments

[0019] The present invention will be further described in detail below with reference to the accompanying drawings of the specification and specific embodiments.

[0020] Embodiment 1 As Figure 1 shown: A depolymerization wheel blade fixing structure includes an upper turntable 1, a lower turntable 2, a blade seat 3 and a blade 4. A plurality of blade seats 3 arranged at intervals in the circumferential direction are connected between the edges of the upper turntable 1 and the lower turntable 2. A slot 31 for installing the blade is provided on the blade seat 3. One end of the blade 4 is embedded in the slot 31, and the other end is exposed.

[0021] The above solution has the following advantages: By adding the blade seat 3 and inserting the blade 4 into the slot 31 of the blade seat 3, compared with only setting the blade between the upper and lower turntables, the probability of blade detachment is greatly reduced, and the safety performance of the equipment is improved.

[0022] As Figure 2 and 3 shown: In this embodiment, the blade seat 3 is preferably designed in a long strip block structure, and the two side surfaces of the blade seat 3 are inclined surfaces, so that the blade seat gradually narrows from its rear end face to the front end face, in order to save materials and effectively improve the space utilization rate between the upper and lower turntables, and reasonably arrange the arrangement spacing of a plurality of blade seats 3. Further preferably, a transitional plane or inclined surface is provided between the rear end face of the blade seat 3 and the two inclined surfaces on both sides.

[0023] In this embodiment, the blade seat 3 is connected to the upper turntable 1 and the lower turntable 2 by plug-in connection. Specifically, upper plug-in members extend upward from both sides of the upper end face of the blade seat 3, and lower plug-in members extend downward from both sides of the lower end face of the blade seat 3. Each plug-in member can be in a block or columnar structure. The plug-in member can be additionally provided or integrally formed with the upper end face / lower end face or rear end face of the blade seat 3. Two insertion holes 11 are provided at positions corresponding to each blade seat 3 on the upper turntable 1 and the lower turntable 2. The shape of the insertion hole 11 is adapted to the shape of the plug-in member, so that the plug-in connection of the blade seat 3 is inserted into the insertion hole to achieve fastening. Preferably, the plug-in member in this embodiment is a square limit block 32, and the insertion hole 11 is a square hole. During installation, the limit block 32 at the lower end of the blade seat can be first inserted into the square hole of the lower turntable 2, and then the square hole of the upper turntable 1 is adaptively connected to the limit block 32 at the upper end of the blade seat. Through the plug-in setting, the blade seat 3 can be quickly assembled onto the turntable and is convenient for disassembly.

[0024] In this embodiment, a slot 31 is formed in the outer end face (the end facing the outside of the turntable) of the blade holder 3 in the height direction, and the slot 31 penetrates through the upper end face and the lower end face of the blade holder 3. One end of the blade 4 is inserted into the slot 31, and the other end extends along the turntable for crushing materials. Preferably, the slot 31 is a wedge-shaped groove, and the cross-sectional shape of the blade 4 is trapezoidal, which can just be embedded in the wedge-shaped groove of the blade holder 3 for fastening. By setting the wedge-shaped groove, the probability of the blade falling off can be further reduced, and the probability of the blade falling off is basically zero.

[0025] It can be understood that the slot 31 can also be designed as a dovetail groove, and the shape of the end of the blade 4 inserted into the slot 31 can be designed to match the dovetail groove.

[0026] In this embodiment, the upper end faces of the blade 4 and the blade holder 3 are in contact with the upper turntable 1, and the lower end faces are in contact with the lower turntable 2, so that the upper and lower turntables limit and fix the axial direction of the blade 4 and the blade holder 3, and the blade holder 3 fixes the radial direction of the blade 4. Therefore, the probability of the blade falling off can be greatly reduced, and potential safety hazards can be avoided.

[0027] The working principle of this embodiment is as follows: when the upper turntable 1 and the lower turntable 2 rotate coaxially, the blade holder 3 and the blade 4 are driven to rotate. After the material enters the depolymerization chamber and passes through the gap between the cylinder wall and the depolymerization wheel, the exposed part of the blade 4 shears the material at high speed during rotation to achieve the purpose of dispersing the material; and the blade 4 and the blade holder 3 are limited in the axial direction by the upper and lower turntables, and the blade 4 is fixed in the radial direction by the blade holder 3, so as to effectively ensure that the blade 4 will not fall off. When the blade 4 needs to be replaced, only the blade 4 needs to be pulled out of the slot 31, which greatly improves the disassembly and assembly efficiency.

[0028] Embodiment 2 On the basis of Embodiment 1, the blade 4 in this embodiment is made of ceramic material, preferably alumina ceramic; the blade holder 3 is made of metal material, preferably titanium alloy.

[0029] Compared with using stainless steel, the use of ceramic in this embodiment, on the one hand, can greatly improve the wear resistance of the blade due to the high wear resistance of alumina ceramic itself, and greatly reduce the maintenance cost of the equipment; on the other hand, it effectively avoids the mixing of impurities generated by blade wear into the material, thereby reducing the content of material impurities and greatly improving the material quality. In addition, since ceramic is relatively brittle, by combining the blade holder with the ceramic blade, the design of the blade holder can prevent the blade from being crushed by the upper and lower turntables, thus playing a protective role for the blade.

[0030] If only the blade is designed to be made of ceramic material in this embodiment without providing a tool holder, the following defects will exist: (1) Centrifugal force causes the ceramic blade to separate from the turntable: During high-speed rotation, the centrifugal force may cause the combination of the ceramic blade and the turntable to fail, resulting in the blade falling off and breaking; (2) The broken ceramic blades trigger a chain reaction: The fragments of the fallen or broken blades will impact other blades, triggering chain damage and causing the entire system to malfunction; (3) Wind pressure causes the turntable to deform: During high-speed operation, the strong wind pressure deforms the turntable, thereby affecting the stability of the ceramic blades; (4) The ceramic blades break due to lack of toughness: The ceramic material is brittle, and when the turntable deforms or is affected by wind pressure, the blades cannot withstand the stress and break, further exacerbating the chain reaction. Therefore, by correlating the above problems with each other, in this embodiment, the ceramic blade is combined with the blade seat, which not only solves the problem of easy breakage of the ceramic blade but also solves the problem of easy detachment caused by the difficulty of fixing the ceramic blade, thus protecting the ceramic blade from breaking and falling off easily during high-speed rotation.

[0031] Embodiment 3 A depolymerization wheel includes the blade fixing structure described in Embodiment 1 and / or Embodiment 2.

[0032] The depolymerization wheel of this embodiment can be used in a honeycomb mill or other depolymerization equipment and can depolymerize materials.

[0033] It can be understood that one or more depolymerization wheels can be provided in the depolymerization chamber of the depolymerization equipment.

[0034] In addition, the term "connection" should be understood in a broad sense. For example, it can include fixed connection, detachable connection or integral connection; it can include direct connection, and can also be indirectly connected through an intermediate medium, and can also include the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in this application can be understood according to specific situations.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0036] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as a limitation to the present application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present application.

Claims

1. A fixed structure for a depolymerization wheel blade, comprising at least two turntables arranged vertically; characterized in that, A number of blade seats are arranged at intervals along the circumferential direction between adjacent turntables; a slot is provided on the blade seat, one end of the blade is embedded in the slot, and the other end is exposed; the blade is made of ceramic material.

2. The depolymerization wheel blade fixing structure according to claim 1, characterized in that, The upper and lower turntables limit and fix the axial direction of the blade and the blade seat, and the blade seat limits and fixes the radial direction of the blade.

3. The depolymerization wheel blade fixing structure according to claim 1 or 2 or 3, characterized in that, At least one insertion hole is provided at the position where the turntable is connected to the blade seat, and a plug-in member is provided at the position of the blade seat facing the insertion hole, and the plug-in member of the blade seat is inserted into the insertion hole of the turntable for fixation.

4. The depolymerization wheel blade fixing structure according to claim 1 or 2 or 3, characterized in that, The outer end face of the blade seat is provided with the slot along the height direction, one end of the blade is inserted into the slot, and the other end extends along the turntable.

5. The depolymerization wheel blade fixing structure according to claim 1 or 2 or 3, characterized in that, The shape of the end of the blade connected to the slot matches the slot, so that the blade can be closely fitted with the slot after insertion to prevent the blade from falling off.

6. The depolymerization wheel blade fixing structure according to claim 5, characterized in that, The end of the blade connected to the slot extends out a shape matching the slot, and the insertion depth of the blade into the slot is designed to ensure that the blade does not fall off after insertion.

7. The depolymerization wheel blade fixing structure according to claim 3, characterized in that, At least one block-shaped or column-shaped structure extends upward and downward respectively at the rear side of the blade seat, and at least one insertion hole is provided at the position where the turntable is connected to the blade seat.

8. The depolymerization wheel blade fixing structure according to claim 4, wherein, The slot penetrates through the upper end face and the lower end face of the blade seat, the upper end face of the blade and the blade seat contacts the upper turntable, and the lower end face contacts the lower turntable.

9. The depolymerization wheel blade fixing structure according to claim 1 or 2 or 3, characterized in that, Both side faces of the blade seat are inclined planes and gradually narrow from the rear end face to the front end face of the blade seat.

10. A depolymerization wheel, characterized in that, It includes a depolymerization wheel blade fixing structure according to any one of claims 1 to 9.

Images