阅读说明：本技术 用于成型的挤条机孔板和挤条机 (Pore plate of strip extruding machine for forming and strip extruding machine ) 是由 董松涛 杨清河 杨平 樊亚明 于 2019-10-31 设计创作，主要内容包括：本发明涉及催化剂载体生产设备技术领域,具体地涉及一种用于成型的挤条机孔板和挤条机。所述挤条机孔板包括彼此叠置第一模具(1)和第二模具(5),所述第一模具(1)开设有成型孔,所述第二模具(5)设置有杆件(9)以及避让所述杆件(9)的通料孔(6),所述通料孔(6)与所述成型孔的进料侧连通,所述杆件(9)穿入所述成型孔并且至少延伸至所述成型孔的出料侧。所述挤条机孔板通过杆件与成型孔共同形成模具腔,实现了一步法加工制得具有中间孔道结构的催化剂载体,提高了催化剂的有效利用率,简化了工艺,有利于提高成品合格率；还降低了对材料自身的结构强度的要求,扩大了具有孔道结构的催化剂载体的选材范围。(The invention relates to the technical field of catalyst carrier production equipment, in particular to a pore plate of a bar extruding machine for molding and the bar extruding machine. The orifice plate of the strip extruding machine comprises a first die (1) and a second die (5) which are mutually overlapped, a forming hole is formed in the first die (1), a rod piece (9) and a material passing hole (6) for avoiding the rod piece (9) are arranged on the second die (5), the material passing hole (6) is communicated with the feeding side of the forming hole, and the rod piece (9) penetrates into the forming hole and at least extends to the discharging side of the forming hole. The pore plate of the extruder forms a die cavity together with the forming hole through the rod piece, so that the catalyst carrier with the middle pore channel structure is processed and prepared by a one-step method, the effective utilization rate of the catalyst is improved, the process is simplified, and the qualification rate of the finished product is improved; the requirement on the structural strength of the material is also reduced, and the material selection range of the catalyst carrier with the pore channel structure is expanded.)

1. The pore plate of the strip extruding machine for forming is characterized by comprising a first die (1) and a second die (5) which are mutually overlapped, wherein a forming hole is formed in the first die (1), a rod piece (9) and a material passing hole (6) avoiding the rod piece (9) are arranged on the second die (5), the material passing hole (6) is communicated with the feeding side of the forming hole, and the rod piece (9) penetrates into the forming hole and at least extends to the discharging side of the forming hole.

2. An orifice plate for a profiled plodder as claimed in claim 1, characterized in that the ratio of the cross-sectional area of the bar (9) to the cross-sectional area of the through-hole is 0.05: 100-30: 100, respectively; preferably 0.1: 100-20: 100, respectively; more preferably 0.2: 100-10: 100.

3. an orifice plate for a profiled plodder according to claim 2, characterized in that the profiled orifices comprise round orifices, oval orifices or profiled orifices (2).

4. An orifice plate for a profiled plodder according to claim 3, characterized in that the profiled orifice is provided as the profiled orifice (2), the profiled orifice (2) comprising a multi-lobed structure enclosed by a plurality of intersecting circles, the multi-lobed structure comprising a plurality of lobes (3) of equal central angle and/or equal radius of the circular arc.

5. An orifice plate for a profiled plodder as claimed in claim 4, characterized in that the bars (9) are arranged to extend along the central axis of the circumscribed circle on which the multi-lobed configuration lies and/or along the central axis of the lobes (3).

6. A hole plate of a rod extruding machine for forming according to claim 5, wherein the part of the rod piece (9) extending into the special-shaped hole (2) is provided with a uniform section structure.

7. A hole plate of a rod extruder for forming according to claim 6, characterized in that the part of the rod (9) is provided as a cylinder.

8. An orifice plate for a profiled plodder as claimed in claim 7, characterized in that the diameter of the cylinder is set to 0.01mm to 0.5 mm; preferably, 0.05mm to 0.3 mm.

9. An orifice plate for a profiled plodder as claimed in claim 6, characterized in that the portion of the bar (9) is provided as a regular polygon.

10. The orifice plate of a plodder as claimed in claim 9, wherein the diameter of the cylinder circumscribed by the regular polygonal prism is set to be not more than 0.3 mm.

11. A hole plate of a rod extruder for forming according to any one of claims 1-10, characterized in that the peripheral wall of the second die (5) is smoothly connected with the peripheral wall of the first die (1).

12. An orifice plate for a profiled plodder according to claim 11, characterized in that the distribution area of the through-flow openings (6) covers at least the distribution area of the profiled openings.

13. An orifice plate of a plodder for shaping as claimed in any of claims 1 to 10, characterized in that the ratio of the height of the first die (1) and the height of the second die (5) is set to 1: 3-3.

14. A rod extruder, characterized in that the rod extruder comprises a main body and the orifice plate for a rod extruder according to any one of claims 1 to 13, wherein the main body is configured to enable raw materials to be fed into the die cavity for extrusion molding to produce the catalyst carrier (10) with a profiled pore-like shape and an intermediate pore structure.

Technical Field

The invention relates to the technical field of catalyst carrier production equipment, in particular to a pore plate of a bar extruding machine for molding and the bar extruding machine.

Background

The catalyst carrier is also called a support (support) and is one of the compositions of the supported catalyst. The catalytically active components are supported on the surface of a carrier, which is mainly used to support the active components and to give the catalyst specific physical properties, whereas the carrier itself generally does not have catalytic activity.

In the catalyst, the carrier is used as a loading and supporting structure of active components, and the specific shape, size and mechanical strength of the carrier directly influence the service performance of the catalyst. In order to increase the effective utilization of the catalyst and active metal, generally speaking, a channel structure can be processed on the catalyst carrier. The specific production process of the catalyst carrier with the middle pore channel structure comprises the steps of firstly preparing a raw material into an intermediate body with a specific outer contour shape, and then processing the pore channel structure on the intermediate body in a punching mode. However, the above-mentioned production process has many steps, a long production period and high cost, and is not suitable for processing a catalyst support made of a material having a relatively low structural strength (for example, at least one of alumina, silica, magnesia, carbon-based material, etc.).

Disclosure of Invention

The invention aims to solve the problems that the production period of the existing catalyst carrier with the middle pore channel structure is long, the cost is high, the structural strength of the material of the catalyst carrier is higher and the like in the prior art, and provides a pore plate of a bar extruding machine for forming and a bar extruding machine.

In order to achieve the above object, the present invention provides, in one aspect, an orifice plate of a plodder for molding, the orifice plate including a first die and a second die which are stacked on each other, the first die being opened with a molding hole, the second die being provided with a rod member and a material passing hole avoiding the rod member, the material passing hole being communicated with a feeding side of the molding hole, the rod member penetrating into the molding hole and extending at least to a discharging side of the molding hole.

Optionally, the ratio of the cross-sectional area of the rod to the cross-sectional area of the forming hole is 0.05: 100-30: 100, respectively; preferably 0.1: 100-20: 100, respectively; more preferably 0.2: 100-10: 100.

optionally, the molding holes include circular holes, elliptical holes or special-shaped holes.

Optionally, the forming hole is the special-shaped hole, the special-shaped hole comprises a multi-blade structure formed by a plurality of intersecting circles, and the multi-blade structure comprises a plurality of blades with equal central angles and/or equal arc radiuses.

Optionally, the stem is arranged to extend along a central axis of a circumscribed circle on which the multi-lobed structure lies and/or along a central axis of the vane.

Optionally, the part of the rod piece extending into the special-shaped hole is of a uniform cross-section structure.

Optionally, the portion of the rod is configured as a cylinder.

Optionally, the diameter of the cylinder is set to be 0.01mm-0.5 mm; preferably, 0.05mm to 0.3 mm.

Optionally, the portion of the rod member is a regular polygonal prism.

Optionally, the diameter of the circumscribed cylinder of the regular polygonal prism is set to be not greater than 0.3 mm.

Optionally, the peripheral wall of the second mold is smoothly connected with the peripheral wall of the first mold.

Optionally, the distribution area of the through-material holes at least covers the distribution area of the forming holes.

Optionally, the ratio of the height of the first mold to the height of the second mold is set to 1: 3-3.

The invention provides a bar extruding machine which comprises a main body and the formed bar extruding machine pore plate, wherein the main body is arranged to be capable of sending raw materials into a die cavity to be extruded and formed so as to prepare the catalyst carrier with a special-shaped porous shape and a middle pore channel structure.

According to the technical scheme, the pore plate of the strip extruding machine for forming and the strip extruding machine are provided with the first die and the second die, and the rod piece extends to the discharge side of the forming hole of the second die, so that the forming hole of the second die and the rod piece can jointly form a pore plate die cavity of the strip extruding machine, the catalyst carrier with a pore structure is manufactured through one-step processing, the effective utilization rate of a catalyst is improved, the operation is simple, the forming process is simplified, the defective rate caused by extra process steps such as punching in the forming process is reduced, the production cost is reduced, the first die can firmly fix the rod piece through the mounting hole and can supply raw materials to the forming hole through the material through hole, and the continuous and smooth operation of the pore plate of the strip extruding machine is ensured; the requirement on the structural strength of the material can be reduced, the material selection range of the catalyst carrier with the pore channel structure is expanded, and the material category of the finished product is enriched.

Drawings

FIG. 1 is a schematic structural diagram of a first die of a hole plate of a plodder provided by the invention;

FIG. 2 is a schematic structural diagram of a second die of a hole plate of a plodder provided by the invention;

FIG. 3 is a schematic structural view of a rod of a hole plate of a plodder according to the present invention;

FIG. 4 is a schematic structural view of a first trilobal catalyst support provided by the present invention;

FIG. 5 is a schematic structural view of a second trilobal catalyst support provided by the present invention;

FIG. 6 is a schematic structural view of a third trilobal catalyst support provided by the present invention;

FIG. 7 is a schematic structural view of a first four-lobed catalyst support provided by the present invention;

fig. 8 is a schematic structural view of a second four-lobed catalyst support provided by the present invention.

Description of the reference numerals

1. A first mold; 2. a profiled hole; 3. a blade; 4. a first mounting structure; 5. a second mold; 6. a feed through hole; 7. a second mounting structure; 8. mounting holes; 9. a rod member; 10. a catalyst support; 11. a first tunnel structure; 12. a second tunnel structure; 13. a head portion; 14. a stem portion.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

The invention provides a pore plate of a strip extruding machine for molding, which comprises a first mold 1 and a second mold 5 which are mutually overlapped, wherein a molding hole is formed in the first mold 1, a rod piece 9 and a material passing hole 6 avoiding the rod piece 9 are arranged on the second mold 5, the material passing hole 6 is communicated with the feeding side of the molding hole, and the rod piece 9 penetrates into the molding hole and at least extends to the discharging side of the molding hole, as shown in figures 1-3. The second mold 5 may be an integral piece, or may be a split structure, that is, the second mold is provided with a mounting hole 8, so as to fixedly mount the rod 9 in the mounting hole 8 of the second mold by welding or the like.

When the catalyst carrier 10 with the middle pore channel structure is processed by an extrusion forming process, raw materials enter the forming holes through the material through holes 6 through the feeding hole of the pore plate of the extruder, are processed through a die cavity formed by the forming holes and the rod pieces 9 together, and are extruded through the discharging hole of the pore plate of the extruder to be manufactured into the catalyst carrier 10 with the middle pore channel structure. Wherein, the feed inlet of the orifice plate of the plodder is the feed side of the feed through hole 6 of the first die 1, and the discharge side of the feed through hole 6 is communicated with the feed side of the forming hole; the discharge hole of the orifice plate of the extruder is the rest part of the discharge hole of the molding hole except the shielding part formed by removing the rod piece 9. It can be understood that the prepared catalyst carrier 10 is a bar-shaped structure, the cross section of the bar-shaped structure is matched with the shape of the discharge hole of the orifice plate of the extruder, wherein the bar-shaped structure can be a linear bar-shaped structure, a curved bar-shaped structure, a long strip-shaped structure or a short bar-shaped structure. In addition, the pore plate of the bar extruding machine can be provided with a reasonable number of the first moulds 1 and the second moulds 5, and the reasonable number of the first moulds 1 and the second moulds 5 can be connected together by adopting various reasonable overlapping orders, as long as the discharge port of the pore plate of the bar extruding machine can be formed by the forming hole and the rod piece 9, for example, the orifice plate of the plodder comprises a plurality of first dies 1 and a plurality of second dies 5, wherein the second dies 5 are arranged between two adjacent first dies 1, and the rod 9 can be assembled in the mounting hole 8 of any one second die 5 in the plurality of second dies 5 and penetrate into the forming hole communicated with the discharging side of the through hole 6 of the any one second die 5 until the rod extends to the discharging side of the forming hole of the first die 1 at the tail end of the discharging side direction of the through hole 6 of the any one second die 5 in the plurality of first dies 1; then: the discharge hole of the orifice plate of the extruder is the rest part of the discharge hole of the forming hole of the first die 1 at the tail end except the shielding part formed by removing the rod piece 9; the feed inlet of the orifice plate of the plodder, namely the feed inlet of the forming hole of the first die 1 at the head end, is the first die 1 at the head end, namely the die 1 at the farthest from the first die 1 at the tail end in the plurality of first dies 1.

According to the technical scheme, the orifice plate of the extruding machine for forming and the extruding machine are provided, the orifice plate of the extruding machine is provided with the first die 1 and the second die 5, the rod piece extends to the discharge side of the forming hole of the second die, so that the forming hole of the second die 5 and the rod piece 9 can jointly form a die cavity of the orifice plate of the extruding machine, the catalyst carrier with a middle pore channel structure is manufactured through one-step processing, the effective utilization rate of a catalyst is improved, the operation is simple, the forming process is simplified, the defective rate caused by extra process steps such as punching in the forming process is reduced, the process periods such as drying, roasting and the like in the subsequent processing process are shortened, the production cost is reduced, the first die can supply raw materials to the forming hole through the material through hole 6 while the rod piece 9 is fixed through the mounting hole 8, and the orifice plate of the extruding machine can be continuously connected, The operation is smooth; the requirement on the structural strength of the material can be reduced, the material selection range of the catalyst carrier with the pore channel structure is expanded, and the material category of the finished product is enriched.

As shown in fig. 4-8, since the catalyst carrier 10 processed by the orifice plate of the plodder has a middle pore channel structure, the strength of the catalyst carrier 10 is reduced compared with that of a solid catalyst carrier (referring to a catalyst carrier of the same material), and in order to ensure that the overall strength of the catalyst carrier 10 meets the use requirement, for example, the ratio of the cross-sectional area of the rod 9 to the cross-sectional area of the molding hole is 0.05: 100-30: 100. preferably 0.1: 100-20: 100, respectively; more preferably 0.2: 100-10: 100, is more suitable for a catalyst carrier made of a material with lower self structural strength. It is worth mentioning that when the hole plate of the plodder is provided with a plurality of bars 9, the cross-sectional area of the bars 9 mentioned above refers to the total cross-sectional area of the plurality of bars 9.

In order to improve the effective utilization rate of the catalyst, the surface area of the outer contour of the catalyst carrier 10 can be increased, for example, the molding holes include circular holes, elliptical holes or special-shaped holes 2, so that the prepared catalyst carrier has a regular structure and a stable shape, the strength of the catalyst carrier is improved, the material consumption of the catalyst carrier can be saved, and the cost is reduced. The molding holes can be arranged in other reasonable forms according to actual requirements, for example, the molding holes can be arranged such that the cross section of the molding holes is a regular polygonal structure, and the outer contour of the manufactured catalyst carrier is a regular polygonal prism structure; alternatively, the molding holes are provided in other irregular shapes.

Specifically, the special-shaped holes 2 can be of a multi-blade structure, so that the surface area of the outer contour of the catalyst carrier can be increased to the maximum on the premise of ensuring the overall strength of the catalyst carrier, the effective utilization rate of the catalyst is optimized, specifically, the special-shaped holes 2 comprise a multi-blade structure formed by a plurality of intersected circles in a surrounding mode, the multi-blade structure comprises a plurality of blades 3 with equal central angles and/or equal arc radiuses, the outer contour of the manufactured catalyst carrier is formed into a cylinder with a cross section of the multi-blade structure, the structure is regular, the stress balance of the catalyst carrier is facilitated, and the overall strength of the catalyst carrier is improved. It can be understood that the special-shaped hole 2 is actually a hole structure, and the cross section of the hole structure is the multi-leaf structure, and specifically can be a multi-leaf structure such as a two-leaf structure, a three-leaf structure, a four-leaf structure and the like; furthermore, the special-shaped holes 2 can be arranged into a linearly extended pore channel structure, so that the forming time of the catalyst carrier 10 in extrusion forming is prolonged, and the forming stability of the catalyst carrier 10 is improved.

As shown in fig. 4-8, the rod members 9 are arranged to extend along the central axis of the circumscribed circle of the multi-blade structure and/or along the central axis of the blades 3, the opening positions of the middle pore channel structure of the catalyst carrier 10 are reasonably designed, the distribution is balanced, the sudden decrease of the local strength of the catalyst carrier 10 caused by the opening of the middle pore channel structure is effectively avoided, and the mechanical strength is improved. Specifically, when the rods 9 are arranged to extend along the central axis of the circumscribed circle of the multi-lobed structure, the catalyst carrier 10 made of the orifice plate of the plodder has the second cell structure 12 as shown in fig. 6 and 8; when the rod 9 is arranged to extend along the central axis of the blade 3, the catalyst carrier 10 made of the orifice plate of the plodder has a first cell structure 11 as shown in fig. 4-8; when the second mold 5 comprises a plurality of rod pieces 9, the rod pieces 9 respectively extend along the central axis of the circumscribed circle of the multi-blade structure and along the central axis of the blade 3, the catalyst carrier 10 made of the pore plate of the plodder is provided with the first pore structure 11 and the second pore structure 12 as shown in fig. 6 and 8, the distribution is reasonable, the stress balance of the catalyst carrier 10 is improved, the surface area of the inner hole of the catalyst carrier 10 is increased, the effective utilization rate of the catalyst is optimized, the process periods of drying, roasting and the like can be effectively shortened, and the processing is convenient.

As shown in fig. 3, the part of the rod 9 extending into the special-shaped hole 2 is set to be of an equal cross-section structure, and when the catalyst carrier 10 is manufactured by extrusion molding through a hole plate of an extrusion machine, the rod 9 and the die cavity formed by the special-shaped hole 2 are also of an equal cross-section structure, so that the stability of the processing shape of the catalyst carrier 10 is effectively ensured, the formation of a dense catalyst carrier with high compactness and high strength under the extrusion molding action of the die cavity is facilitated, and the method is safe and efficient. The rod 9 can be formed by a forming nail as shown in fig. 3, the head 13 of the forming nail is installed in the installation hole 8, the rod 14 of the forming nail is arranged to be of a uniform cross-section structure and extends towards the discharge hole of the hole plate of the plodder so as to be sleeved in the installation hole 8 and the special-shaped hole 2, and the forming nail is simple and convenient to install and low in cost. In addition, the rod 9 may be configured as a conical structure, for example, as a common molding spike nail, a head of the molding spike nail is installed in the installation hole 8, a rod of the molding spike nail is configured as a conical structure and a wide head is connected with the head of the molding spike nail, the rod extends toward the discharge hole of the hole plate of the plodder to be sleeved in the installation hole 8 and the special-shaped hole 2, so that the discharge hole of the hole plate of the plodder is jointly formed by the special-shaped hole 2 and the spike of the rod of the molding spike nail, thereby manufacturing the catalyst carrier 10 with an extremely narrow (i.e., cross-sectional) middle pore channel structure. Wherein, in the mould cavity of the orifice plate of the plodder, the rod body 9 can be formed into various reasonable shapes, so as to be convenient for processing and manufacturing the catalyst carrier 10 with the middle pore structure of corresponding shape, for example, the part of the rod body 9 is set to be a cylinder, and then the catalyst carrier 10 can correspondingly form the middle pore structure of a cylinder structure, so that the inner surface of the catalyst carrier 10 is smoother and more regular, the phenomenon of stress concentration caused by the existence of sharp pore walls in the middle pore structure of the catalyst carrier 10 is avoided, and the probability of collapse of the catalyst carrier 10 is reduced.

Further, the diameter of the cylinder is set to be 0.01mm-0.5mm, so that the mechanical strength of the catalyst carrier and the loading capacity of the active component are considered; preferably 0.05mm-0.3mm, the design is more reasonable.

In addition, the part of the rod member 9 is a regular polygonal prism, so that the catalyst carrier 10 can correspondingly form a middle pore channel structure of the regular polygonal prism structure, the inner surface of the catalyst carrier 10 is more regular, the stress distribution of the catalyst carrier 10 is more balanced, and the overall strength of the catalyst carrier 10 is optimized.

Furthermore, the diameter of the circumscribed cylinder of the regular polygonal prism is set to be not more than 0.3mm, so that the design is more reasonable. The regular polygonal prisms may be triangular prisms, quadrangular prisms, pentagonal prisms, and other regular polygonal prisms, and the middle duct structure of the catalyst carrier 10 is correspondingly formed into an equilateral triangle, a square, a regular pentagon, and other regular polygonal structures.

In order to make the orifice plate of the bar extruder widely applicable to the existing bar extruder, the peripheral wall of the second die 5 is smoothly connected with the peripheral wall of the first die 1. Wherein the outer contours of the first and second dies 1, 5 can be provided in various reasonable shapes, such as cylindrical shapes. It can be understood that the second mold 5 and the first mold 1 are attached to each other to avoid material leakage, for example, the attaching surface of the first mold 1 is formed with a first mounting structure 4, the attaching surface of the second mold 5 is formed with a second mounting structure 7 capable of fitting with the first mounting structure 4, for example, one of the first mounting structure 4 and the second mounting structure 7 is configured as a mounting groove, and the other is configured as a mounting protrusion fitting with the mounting groove.

In order to guarantee that the raw materials of second mould 5 output can carry out even cloth in the pan feeding mouth department in heterotypic hole, for example, the one end of the first mould of laminating of second mould forms the equipartition hole, so that logical material hole 6 can be through equipartition hole and shaping hole intercommunication, wherein, the equipartition hole can set up to single through-hole structure and the cover is established outside the member, and the distribution area in equipartition hole covers the distribution area in logical material hole 6 and the distribution area in shaping hole simultaneously, make the raw materials of logical material hole 6 output can evenly get into in the shaping hole under the cushioning effect in equipartition hole, the product percent of pass of catalyst carrier 10 has been improved. However, in order to simplify the processing technology of the second mold and reduce the processing difficulty of the mold main body, the mold main body can be set to be of a uniform cross-section structure, so that the thickness (referring to the discharging direction of the orifice plate of the bar extruder) of the solid structure of the second mold 5 can be maximized, the bearing capacity of the solid structure of the second mold 5 is enhanced, and the fixing firmness of the rod piece is improved. It will be appreciated that the through-flow opening 6 may be provided in any suitable form, for example, as shown in fig. 2, it may be divided into a plurality of small openings by the solid structure of the second mold 5, wherein the plurality of small openings may be communicated with the mounting opening 8 or isolated from the mounting opening 8, and further, the overall outer contour of the through-flow opening may be provided with a multi-blade structure having the same shape as the special-shaped opening.

Further, the ratio of the height of the first mold 1 to the height of the second mold 5 is set to be 1:3-3, so that the fixation firmness of the rod piece is improved, and the processing time of the mold cavity is prolonged.

In a second aspect, the invention provides a bar extruder, which includes a main body and the pore plate of the bar extruder for molding, wherein the main body is configured to be capable of feeding raw materials into the mold cavity for extrusion molding to obtain the catalyst carrier 10 with a special-shaped pore-shaped appearance and an intermediate pore structure. The raw material may be a material having a high structural strength itself, such as ceramic, or a material having a low structural strength itself, such as at least one of alumina, silica, magnesia, and a carbon-based material.

Through the technical scheme, the invention provides the strip extruding machine, the strip extruding machine is provided with the strip extruding machine pore plate, the catalyst carrier with the pore channel structure is processed and prepared by a one-step method, the effective utilization rate of the catalyst is improved, the operation is simple, the process is simplified, the process periods of drying, roasting and the like in the subsequent processing process are shortened, and the production cost is reduced; the requirement on the structural strength of the material can be reduced, the material selection range of the catalyst carrier with the pore channel structure is expanded, and the material category of the finished product is enriched.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications may be made to the technical solution of the invention, and in order to avoid unnecessary repetition, various possible combinations of the invention will not be described further. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.