Production equipment and production process of high-strength light-weight material

Abstract

The invention belongs to the technical field of composite plastic production, and particularly relates to production equipment and a production process of a high-strength light-weight material. The machine base comprises a lower supporting plate and a machine frame arranged on the lower supporting plate; the extrusion box is arranged on the rack, an extrusion chamber is formed in the extrusion box, a feeding hopper connected with the extrusion chamber is arranged on one side of the extrusion box, a feeding control valve is arranged at an inlet of the feeding hopper, and an outer heating assembly is arranged in the box wall of the extrusion box and surrounds the extrusion chamber; the extrusion screw is arranged in the extrusion chamber, and one end of the extrusion screw extends out of the extrusion chamber; the driving unit is arranged on the lower supporting plate and drives the extrusion screw rod to rotate through a transmission wheel assembly; wherein the extrusion screw comprises an outer rod, one end of the outer rod is inwards provided with a containing cavity, and the outer part of the outer rod is provided with a spiral transmission part; the inner rod is inserted into the containing cavity, an outer rod extends out of the end of the inner rod, and the inner rod is attached to the containing chamber in a sealed mode; the heating medium pumping assembly is used for conveying a heating medium to the inner rod through a pipeline; and a control circuit and a controller are arranged in the control cabinet.

Description

Technical Field

[0001] This invention belongs to the field of composite plastic production technology, and in particular relates to a production equipment and process for a high-strength lightweight material. Background Technology

[0002] Mineral / Bio-based Composites (MBCs) represent a very common and important direction in plastic modification. They involve filling a matrix of general-purpose plastics (such as PP polypropylene and PE polyethylene) or engineering plastics (such as PA nylon) with a large amount of mineral or bio-based materials. Common minerals include talc, calcium carbonate, glass fiber, and mica. Common bio-based materials include wood flour, bamboo flour, and straw fiber. Mineral fillers are generally cheaper than resins and improve rigidity, hardness, heat resistance, and dimensional stability (reducing shrinkage). Using bio-based fillers or natural minerals reduces dependence on petroleum-based plastics, resulting in more environmentally friendly products with heavier or more unique textures. Therefore, MBC materials are widely used in automotive interior parts, appliance housings, outdoor building materials, garden furniture, and packaging materials. The production of composite plastics or other composite materials involves first mixing raw materials in a mixing cylinder, then feeding the mixture into a screw extruder, extruding it, and then pelletizing it. Finally, the pellets are used as raw materials for injection molding or blow molding to form the desired product. Traditional screw extrusion devices include an extrusion chamber with an extrusion box, an extrusion screw set inside the extrusion chamber, and an electric heating coil surrounding the extrusion chamber to heat the material inside the extrusion chamber. However, this external-to-internal heating method is prone to uneven heating of the material inside the extrusion chamber, which in turn affects the quality of the final particles. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned technical problems by providing a production equipment and process for producing high-strength, lightweight MBC materials with stable, uniform, and easily controllable production temperatures.

[0004] In view of this, the present invention provides a production equipment for high-strength lightweight materials, comprising: The base includes a lower support plate and a frame mounted on the lower support plate; An extrusion box is mounted on a frame and has an extrusion chamber inside. It has a feed hopper connected to the extrusion chamber on one side, and a feed control valve at the inlet of the feed hopper. An external heating component is arranged around the extrusion chamber inside the box wall. An extrusion screw is located inside the extrusion chamber, with one end extending out of the extrusion chamber; The drive unit is mounted on the lower support plate and drives the extrusion screw to rotate via the transmission wheel assembly; The extrusion screw includes: The outer rod has an inwardly formed receiving cavity at one end, and a helical drive part on its exterior. The inner rod is inserted into the receiving cavity and has an outer rod extending from its end, and the inner rod is sealed and fitted to the receiving cavity; A heating medium pumping assembly delivers the heating medium to the inner rod through pipelines; A control cabinet containing control circuitry and a controller; The outer rod has an outer positioning plate at one end into which the inner rod is inserted. The inner rod has an inner positioning plate on its outer wall that abuts against and is fixedly connected to the outer positioning plate. The outer wall of the inner rod has a heating circulation groove that extends along the axial direction of the inner rod and coils around it in the circumferential direction. The beginning and end of the heating circulation groove are not connected. The end of the inner rod that extends out of the outer rod has a heat inlet and a heat outlet that are respectively connected to the beginning and end of the heating circulation groove.

[0005] Furthermore, the above technical solution also includes: A sealing support frame is installed at one end of the inner rod extending from the outer rod, and an inlet channel and an outlet channel are formed thereon, which are respectively connected to the heat inlet and the heat outlet. The sealing support frame includes: The external fixing frame is mounted on the lower support base; The outer positioning seat is fixed by the outer fixing bracket and is sleeved on one end of the inner rod, and supports the inner rod; The end sealing seat is set on the end of the outer positioning seat away from the inner rod and abuts against the inner rod. The inlet and outlet channels are formed on the end sealing seat.

[0006] Furthermore, the above technical solution also includes: the external positioning seat includes: The outer positioning sleeve is fixed on the outer fixing bracket; A support sleeve is fitted onto the end of the inner rod, with an interference fit, and the end of the inner rod has a support ring groove that is positioned and fitted with the support sleeve. Several bushing seals are provided, and the inner wall of the support sleeve is provided with several bushing seal grooves. Each bushing seal groove is provided with a bushing seal that is in sealing contact with the inner rod. An outer bearing assembly, comprising several bearings, is sleeved on the outside of a support sleeve, allowing the support sleeve to be rotatably connected to the outer positioning sleeve, and includes several bearings, snap rings, and a positioning bushing; The external sealing assembly is located between the inner wall of the outer positioning sleeve and the outer wall of the support sleeve.

[0007] In the above technical solution, a hot ring groove communicating with the hot outlet is formed on the end face of the inner rod, and the hot ring groove is located outside the hot inlet and is coaxially arranged, and the outlet channel is communicating with the hot buffer. The sealing support frame also includes: Two abutting seals are provided on the end face where the end seal seat abuts the inner rod, and are located on the inner and outer sides of the thermal ring groove; An end seal is provided, with one end of the support sleeve extending through the inner rod and the end of the support sleeve extending through the inner rod abutting against the end sealing seat. The end seal is disposed between the end sealing seat and the end face of the support sleeve. An external reinforcing member is installed between the outer wall of the end sealing seat and the inner wall of the outer positioning sleeve.

[0008] In the above technical solution, the external sealing assembly further includes: The positioning circlip has a positioning groove on the outer wall of the support sleeve, and the positioning circlip is set in the positioning groove. The inner ring seal is positioned on the outer wall of the support sleeve by a positioning snap ring. The outer ring seal is positioned on the inner wall of the outer positioning sleeve, and one end is positioned by the outer bearing assembly and is sealed with the inner sealing ring assembly. The inner ring seal includes: The inner support frame has an inner groove formed on its inner wall that cooperates with the positioning spring for limiting, a positioning part with a positioning groove formed on one side of its outer wall, and a ring-shaped sealing contact part formed on the other side of its outer wall. An internal seal is provided on the positioning part; The outer ring seal includes: The outer support frame is coaxially arranged outside the inner support frame, including an abutting part that abuts against the outer bearing assembly and is located outside the positioning part, a force-bearing part that is fixedly engaged with the inner wall of the outer positioning sleeve, and a surrounding part that extends to the outer wall of the support sleeve and surrounds the sealing contact part. An external seal is provided on the surrounding portion and seals with the sealing contact portion; The inner seal and the outer support frame have a sealing fit at the contact point and the stress point.

[0009] In the above technical solution, the inner sealing element further includes: The load-bearing frame is limited by the positioning part; The inner sealing sheet is fixed on the positioning groove by being supported by a force-bearing skeleton. It has a side sealing part in the direction of the abutment part and a first sealing part and a second sealing part in the direction of the force-bearing part. A support groove is formed between the first sealing part and the side sealing part. An expansion support groove is formed on the end face of the second sealing part and facing the surrounding part. The external seal includes: An outer sealing sheet is fixed on the surrounding part, and a snap-fit ​​groove is formed on one end of the sheet to engage with the end of the surrounding part, and a sealing top is formed on the other end to seal against the end face of the surrounding part. Several outer sealing wings are equidistantly distributed on the outer wall of the outer sealing sheet and make sealing contact with the sealing contact part.

[0010] In the above technical solution, the abutment seal further includes: Two end sealing edges are integrally formed on the end face of the inner rod and are located on the inner and outer sides of the thermal ring groove; Two end sealing grooves are formed on the end face of the end sealing seat and are respectively provided with an end sealing edge, and the end sealing edge extends into the corresponding end sealing groove. An end sealing ring is set in the end sealing groove. The outer wall of the end facing the inner rod has an inner sealing petal that extends obliquely and seals with the side wall of the end sealing groove. The outer wall of the end facing the inner rod has an outer sealing petal that extends obliquely and seals with the end sealing along the inner wall. A V-shaped anti-leakage receiving groove is formed between the inner sealing petal and the outer sealing petal.

[0011] In the above technical solution, further, an end groove is formed on the end face of the end sealing seat, and an end protrusion is formed on the end face of the support sleeve corresponding to the end groove. End seals include: An inner sealing ring is set in the end recess, and the bottom of the end recess has an isosceles trapezoidal rim that is larger on the outside and smaller on the inside. A snap-fit ​​groove that mates with the rim is formed on the inner sealing ring. The snap retainer is fixedly installed in the snap groove, and the inner sealing ring is fixed to the edge of the snap by the snap retainer; The outer sealing ring has an end flange that is an isosceles trapezoidal shape with a larger outer edge and a smaller inner edge. An end groove is formed on the end face of the outer sealing ring to limit and match the end flange. The outer sealing ring is positioned on the end flange by limiting the end flange through the end groove. The side sealing ring has grooves on both the inner and outer walls of the outer sealing ring, and side sealing rings are provided on the grooves. The outer sealing ring is in sealing contact with the side walls of the end groove through the side sealing rings on both sides. The outer sealing ring has an arc-shaped concave reinforcing groove on one end face facing the end groove, and the sealing ring has reinforcing ribs that match the reinforcing groove on the end face.

[0012] In the above technical solution, the external reinforcing member further includes: The outer support frame has an outer support groove on the inner wall of the outer positioning sleeve, and the outer support frame is set in the outer support groove; The inner support frame has an inner support groove on the inner wall of the end sealing seat that is opposite to the outer support groove, and the inner support frame is set on the inner support groove. An inner sealing block is set on an inner support frame, and several inner sealing spines extending obliquely outward to the outer support groove are formed thereon. An outer sealing block is mounted on an outer support frame and has several outer sealing spines that extend obliquely toward the direction of the inner sealing block. The end of each inner sealing spine abuts against the middle of the side wall of an outer sealing spine.

[0013] The beneficial effects of this invention are as follows: 1. The production equipment heats the material from the outside into the extrusion chamber through a heating component, and then heats it again through the extrusion screw within the extrusion chamber. This internal and external heating method ensures uniform heating and guarantees the quality of the produced particles. 2. The production equipment uses a sealed support frame to support the inner rod of the extrusion screw and seal it in contact with the inner rod, thereby ensuring that the heating medium will not leak during the rotation of the extrusion screw and ensuring the overall safety of the equipment operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the sealing support frame and the extrusion screw in this invention; Figure 3 This is a schematic diagram of the screw in this invention; Figure 4 This is a schematic diagram of the inner rod in this invention; Figure 5 This is a partial cross-sectional schematic diagram of the extrusion screw in this invention; Figure 6 This is a cross-sectional schematic diagram of the cooperation between the inner rod and the sealing support frame in this invention; Figure 7 yes Figure 6 A magnified view of a section at point I; Figure 8 yes Figure 6 Enlarged view of a section at point II; Figure 9 yes Figure 6 Enlarged view of a section at point III; Figure 10 yes Figure 6 Enlarged view of a section at point IV; The markings in the diagram represent: 1-base, 2-extrusion box, 3-drive unit, 4-outer rod, 5-inner rod, 6-heating circulation groove, 7-heat inlet, 8-heat outlet, 9-outer fixing frame, 10-end sealing seat, 10a-end recess, 10b-clamping edge, 10c-inner support groove, 11-outer positioning sleeve, 11a-outer support groove, 12-inlet channel, 13-outlet channel, 14-support sleeve, 14a-end protrusion, 15-support ring groove, 16-shaft sleeve seal ring, 17-outer bearing assembly, 18-heating ring groove, 30-outer sealing assembly, 31-positioning snap ring, 32-inner support skeleton, 32a-inner groove, 32b-positioning part, 32c-sealing contact part, 33-inner seal, 331-force-bearing skeleton, 332-inner sealing plate, 332a-side sealing part, 332b-first sealing part 332c - Second sealing part, 332d - Support groove part, 332e - Expansion support groove, 34 - Outer support frame, 34a - Abutting part, 34b - Force-bearing part, 34c - Surrounding part, 35 - Outer sealing element, 351 - Outer sealing plate, 351a - Snap-fit ​​groove, 351b - Sealing top, 352 - Outer sealing wing, 40 - Abutting sealing element, 41 - End sealing edge, 42 - End sealing groove, 43 - End sealing ring, 43a - Inner sealing flap, 43b - Outer sealing flap, 43c - Leak-proof receiving groove, 50 - End sealing element, 51 - Inner sealing ring, 52 - Snap-fit ​​retainer, 53 - Outer sealing ring, 54 - Side sealing ring, 60 - Outer reinforcing element, 61 - Outer support frame, 62 - Inner support frame, 63 - Inner sealing block, 63a - Inner sealing thorn, 64 - Outer sealing block, 64a - Outer sealing thorn. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0016] Example 1: This embodiment provides a production equipment for high-strength lightweight materials, including: The base 1 includes a lower support plate and a frame mounted on the lower support plate; The extrusion box 2 is mounted on the frame and has an extrusion chamber inside. It has a feed hopper connected to the extrusion chamber on one side. The feed hopper has a feed control valve at its inlet. An external heating component is arranged around the extrusion chamber inside the box wall of the extrusion box 2. An extrusion screw is located inside the extrusion chamber, with one end extending out of the extrusion chamber; The drive unit 3 is mounted on the lower support plate and drives the extrusion screw to rotate via the transmission wheel assembly; The extrusion screw includes: The outer rod 4 has an inwardly formed receiving cavity at one end, and a helical drive part on its outside; The inner rod 5 is inserted into the receiving cavity and has an outer rod 4 extending from its end. The inner rod 5 is sealed and fitted to the receiving cavity. The heating medium pumping assembly delivers the heating medium to the inner rod 5 through a pipeline; A control cabinet containing control circuitry and a controller; The outer rod 4 has an outer positioning plate at one end into which the inner rod 5 is inserted. The inner rod 5 has an inner positioning plate that abuts against and is fixedly connected to the outer positioning plate on its outer wall. The outer wall of the inner rod 5 has a heating circulation groove 6 that extends axially along the inner rod 5 and coils circumferentially. The beginning and end of the heating circulation groove 6 are not connected. The end of the inner rod 5 that extends out of the outer rod 4 has a heat inlet 7 and a heat outlet 8 that are respectively connected to the beginning and end of the heating circulation groove 6.

[0017] In this embodiment, a heating circulation groove 6 is formed around the inner rod 5. A heating medium is then circulated into the heating circulation groove 6 via a heating medium pumping assembly to heat the extrusion screw. In conjunction with an external heating assembly, the material inside the extrusion chamber is heated both internally and externally, ensuring uniform heating and thus guaranteeing the quality of the produced material. Multiple heating circulation grooves 6 can be provided, but they are not interconnected. They are respectively formed on the feeding section, compression section, and homogenization end of the extrusion screw. The heating delivery pumping assembly delivers heating media of corresponding temperatures to the corresponding heating circulation groove 6. The inlet and outlet of heating media at different temperatures are independently set to better ensure the heating temperature.

[0018] The heating medium pumping assembly includes a heating oil tank with a heater and a hot oil pump, and the heating medium is heat transfer oil. The drive unit 3 includes a drive motor, a drive wheel, a driven wheel, and a transmission belt. The drive wheel is connected to the motor shaft of the drive motor, the driven wheel is fixed on the outer rod 4 of the extrusion screw, and the transmission belt connects the drive wheel and the driven wheel.

[0019] Example 2: This embodiment provides a production equipment for high-strength lightweight materials, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0020] Also includes: A sealing support frame is provided at one end of the inner rod 5 extending from the outer rod 4, and an inlet channel 12 and an outlet channel 13 are formed thereon, which are respectively connected to the heat inlet 7 and the heat outlet 8. The sealing support frame includes: External fixing bracket 9 is mounted on the lower support base; The outer positioning seat is fixed by the outer fixing bracket 9 and is sleeved on one end of the inner rod 5, and supports the inner rod 5; The end sealing seat 10 is located on the end of the outer positioning seat away from the inner rod 5 and abuts against the inner rod 5. The inlet channel 12 and the outlet channel 13 are formed on the end sealing seat 10.

[0021] In this embodiment, the sealing bracket supports the inner rod 5 and makes sealing contact with the end face of the inner rod 5, so that the heating medium can enter the inner rod 5 through the heat-sealed support bracket without leakage.

[0022] The upper end of the outer fixing frame 9 has a snap ring structure that can be snapped up and down. The outer fixing seat is fixed to the outer fixing seat through the snap ring structure. The outer positioning seat is used to support the inner rod 5 and allow the inner rod 5 to rotate synchronously with the outer rod 4. The end sealing seat 10 is connected between the outer positioning seat and the inner rod 5. That is, it is fixedly connected to the outer positioning seat and makes sealing contact with the end face of the inner rod 5, thereby ensuring the rotational support and sealing performance of the sealing support frame for the inner rod 5.

[0023] Example 3: This embodiment provides a production equipment for high-strength lightweight materials, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0024] The external positioning base includes: The outer positioning sleeve 11 is fixed on the outer fixing bracket 9; The support sleeve 14 is sleeved on the end of the inner rod 5 and is interference-fitted with the inner rod 5. The end of the inner rod 5 has a support ring groove 15 that is positioned and fitted with the support sleeve 14. A plurality of bushing seal rings 16 are provided on the inner wall of the support sleeve 14, and a plurality of bushing seal grooves are provided on each bushing seal groove, and a bushing seal ring 16 is provided on each bushing seal groove to seal and contact the inner rod 5. The outer bearing assembly 17 includes several bearings, is sleeved on the outside of the support sleeve 14, and allows the support sleeve 14 to be rotatably connected to the outer positioning sleeve 11, and includes several bearings, snap rings and positioning bushings. The outer sealing assembly 30 is disposed between the inner wall of the outer positioning sleeve 11 and the outer wall of the support sleeve 14.

[0025] In this embodiment, the outer positioning sleeve 11 allows the outer positioning seat to be connected to the outer fixing frame 9 more conveniently; the inner support sleeve 14 is used to connect to the inner rod 5; and the outer bearing assembly 17 provides support between the outer positioning sleeve 11 and the inner support sleeve, thereby allowing the inner rod 5 to rotate freely relative to the outer positioning sleeve 11, thus ensuring the smooth operation of the extrusion screw as a whole. The bushing seal ring 16 ensures the sealing performance of the connection between the inner wall of the support sleeve 14 and the outer wall of the inner rod 5. The outer sealing assembly 30 ensures the sealing effect of the connection between the outer positioning sleeve 11 and the support sleeve 14.

[0026] Example 4: This embodiment provides a production equipment for high-strength lightweight materials, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0027] A hot ring groove 18 is formed on the end face of the inner rod 5, which communicates with the hot outlet 8. The hot ring groove 18 is located outside the hot inlet 7 and is coaxially arranged. The outlet channel 13 is connected to the hot buffer. The sealing support frame also includes: Two abutting seals 40 are provided on the end face of the end sealing seat 10 that abuts against the inner rod 5, and are located on the inner and outer sides of the thermal ring groove 18; The end seal 50 is provided between the end face of the end seal 10 and the end face of the support sleeve 14. One end of the support sleeve 14 extends through the inner rod 5 and abuts against the end sealing seat 10. The outer reinforcing member 60 is disposed between the outer wall of the end sealing seat 10 and the inner wall of the outer positioning sleeve 11.

[0028] In this embodiment, the hot ring groove 18 ensures that the heating medium inside the rotating inner rod 5 can smoothly enter the outlet channel 13 and be discharged. The abutment sealing ring ensures the sealing performance between the end sealing seat and the inner rod 5, the end sealing member 50 ensures the sealing performance between the support sleeve 14 and the end sealing seat 10, and the outer reinforcing member 60 improves the sealing performance of the connection between the end sealing seat 10 and the outer positioning sleeve 11. After the outer positioning seat passes, the abutment sealing member 40 abuts and seals the connection end face between the inner rod 5 and the end sealing seat 10; since the support sleeve 14 is located outside the inner rod 5, the end sealing member 50 seals the end face between the outer side of the outer rod 4 and the end sealing seat 10; finally, the outer sealing member 35 and the outer reinforcing member 60 provide a secondary seal at both ends of the connection between the inner rod 5 and the end sealing seat 10 inside the outer positioning sleeve 11, thereby ensuring that the outer positioning seat can rotate and seal with the inner rod 5 at the same temperature, thus ensuring the safety of the heating medium transportation.

[0029] Example 5: This embodiment provides a production equipment for high-strength lightweight materials, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0030] The outer sealing assembly 30 includes: The positioning spring 31 has a positioning groove on the outer wall of the support sleeve 14, and the positioning spring 31 is set on the positioning groove. The inner ring seal is positioned on the outer wall of the support sleeve 14 by a positioning snap ring 31; The outer ring seal is positioned on the inner wall of the outer positioning sleeve 11, and one end is positioned by the outer bearing assembly 17 and is sealed to the inner sealing ring 51 assembly. The inner ring seal includes: The inner support frame 32 has an inner groove 32a formed on its inner wall that is matched with the positioning spring 31 for positioning. Its outer wall has a positioning part 32b with a positioning groove on one side and a ring-shaped sealing contact part 32c on the other side. The inner seal 33 is disposed on the positioning part 32b; The outer ring seal includes: The outer support frame 34 is coaxially disposed outside the inner support frame 32, including an abutting part 34a that abuts against the outer bearing assembly 17 and is located outside the positioning part 32b, a force-bearing part 34b that is fixedly engaged with the inner wall of the outer positioning sleeve 11, and a surrounding part 34c that extends to the outer wall of the support sleeve 14 and surrounds the sealing contact part 32c. The outer seal 35 is disposed on the surrounding portion 34c and is in sealing engagement with the sealing contact portion 32c. The inner sealing element 33 is sealed to the contact portion 34a and the force-bearing portion 34b of the outer support frame 34.

[0031] In this embodiment, the positioning snap ring 31 limits the inner ring seal on one side, and the outer ring seal is limited on one side by abutting against the outer bearing assembly 17, thereby ensuring that the inner ring seal and the outer ring seal are not prone to excessive displacement.

[0032] Both the inner support frame 32 and the outer support frame 34 are made of metal. The inner support frame 32 is clamped onto the outer wall of the support sleeve 14. The outer support frame is clamped onto the inner wall of the outer positioning sleeve 11. The inner seal 33 ensures the sealing effect between the inner ring seal and the outer ring seal. The outer seal 35 ensures the sealing effect between the outer ring seal and the inner ring seal. The sealing parts of both the inner seal 33 and the outer seal 35 are made of wear-resistant rubber. The inner ring seal rotates synchronously with the support sleeve 14 and the inner rod 5, while the outer ring seal is relatively fixed to the outer positioning sleeve 11. Thus, the cooperation of the inner seal 33 and the outer seal 35 ensures that the outer sealing assembly 30 achieves a good sealing effect between the support sleeve 14 and the outer positioning sleeve 11.

[0033] Example 6: This embodiment provides a production equipment for high-strength lightweight materials, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0034] The inner seal 33 includes: The load-bearing frame 331 is limited on the positioning part 32b; The inner sealing sheet 332 is fixed to the positioning groove by being supported by the force-bearing frame 331. It has a side sealing part 332a in the direction of the abutment part 34a, and a first sealing part 332b and a second sealing part 332c in the direction of the force-bearing part 34b. A support groove part 332d is formed between the first sealing part 332b and the side sealing part 332a. An expansion support groove 332e is formed on the end face of the second sealing part 332c, which is provided towards the surrounding part 34c. The outer seal 35 includes: The outer sealing sheet 351 is fixed on the surrounding part 34c, and a snap-fit ​​groove 351a is formed on one end of the outer sealing sheet 351 to engage with the end of the surrounding part 34c, and a sealing top 351b is formed on the other end to seal against the end face of the surrounding part 34c. Several outer sealing wings 352 are equidistantly distributed on the outer wall of the outer sealing sheet 351 and are in sealing contact with the sealing contact portion 32c.

[0035] In this embodiment, the load-bearing frame 331 is made of metal, and its arrangement ensures better fixation of the sealing element to the outer support frame 34. The inner sealing sheet 332 is made entirely of wear-resistant rubber, wherein the side sealing portion 332a extends towards the abutment portion 34a and is parallel to and in contact with the abutment portion 34a. The first sealing portion 332b is coaxially formed on the outside of the side sealing portion 332a and has a two-end folded line structure, with the connection of the two folded lines abutting against the inner wall of the load-bearing portion 34b. The second sealing portion 332c is coaxially arranged with the first sealing portion 332b and is displaced to the other side of the first sealing portion 332b, and a receiving groove is formed at the connection between the first sealing portion 332b and the second sealing portion 332c. The inner sealing piece 332 performs initial sealing through the contact portion 34a of the side sealing part 332a and the outer support frame 34, and then performs secondary sealing through the second sealing part 332c and the first sealing part 332b and the force-bearing part 34b, thereby ensuring the sealing effect between the inner sealing piece 33 and the outer support frame 34; the support groove 332d allows the side sealing part 332a and the first sealing part 332 to form a connection gap, thereby preventing the side sealing part 332a or the first sealing part 332 from deforming and causing the other to deform; the expansion support groove 332e of the inner sealing piece 332 faces the connection between the end sealing seat 10 and the inner rod 5, thereby better intercepting the heating medium when there is a leakage of heating medium, and preventing the heating medium from overflowing. The outer seal 35 ensures good sealing contact with the outer support frame 34 through the sealing top 351b, and makes sealing contact with the inner support frame 32c through several outer sealing wings 352, thereby ensuring good sealing contact with the inner support frame 32, and thus ensuring the overall sealing and leak-proof effect of the outer sealing assembly 30.

[0036] Example 7: This embodiment provides a production equipment for high-strength lightweight materials, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0037] The abutment seal 40 includes: The two end sealing edges 41 are integrally formed on the end face of the inner rod 5 and are located on the inner and outer sides of the thermal ring groove 18. Two end sealing grooves 42 are formed on the end face of the end sealing seat 10 and are respectively provided with an end sealing edge 41, and the end sealing edge 41 extends into the corresponding end sealing groove 42. An end sealing ring 43 is disposed in an end sealing groove 42. An inner sealing petal 43a is formed on the outer wall of the end facing the inner rod 5, which extends obliquely and seals with the side wall of the end sealing groove 42. An outer sealing petal 43b is formed on the outer wall of the end facing the inner rod 5, which extends obliquely and seals with the inner wall of the end sealing groove 41. A V-shaped anti-leakage receiving groove 43c is formed between the inner sealing petal 43a and the outer sealing petal 43b.

[0038] In this embodiment, the end sealing edge 41 is positioned as the contact point between the inner rod 5 and the end sealing seat 10, thereby reducing direct contact between the inner rod 5 and the end sealing seat 10 and the wear caused by this contact. The end sealing groove 42 forms a groove-like structure on the end sealing seat 10 that mates with the inner rod 5, and the engagement of the end sealing groove 42 with the end sealing edge 41 creates a preliminary sealing structure. The sealing ring then provides a good sealing connection between the end sealing edge 41 and the end sealing groove 42. The end sealing ring 43, through the inner sealing flap 43a and the end sealing... The sealing ring 43 body is in sealing contact with the bottom and one side wall of the end sealing groove 42. The outer sealing petal 43b contacts the inner wall of the end sealing edge 41, thus achieving a good sealing and leak-proof effect. A V-shaped leak-proof receiving groove 43c is formed between the inner sealing petal 43a and the outer sealing petal 43b. When the heating medium enters the end sealing groove 42, it will reach the leak-proof receiving groove 43c and squeeze the leak-proof receiving groove 43c, so that the outer sealing petal 43b and the inner sealing petal 43a are more tightly sealed to the end sealing groove 42 and the end sealing edge 41, so as to ensure the overall sealing effect of the sealing element 40.

[0039] Example 8: This embodiment provides a production equipment for high-strength lightweight materials, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0040] An end groove 10a is formed on the end face of the end sealing seat 10, and an end flange 14a corresponding to the end groove 10a is formed on the end face of the support sleeve 14. End seal 50 includes: The inner sealing ring 51 is set in the end recess 10a, and the bottom of the end recess 10a has an isosceles trapezoidal rim 10b that is larger on the outside and smaller on the inside. The inner sealing ring 51 has a snap-fit ​​groove that mates with the rim 10b. The snap retainer 52 is fixedly installed in the snap groove, and the inner sealing ring 51 is fixed to the snap edge 10b by the snap retainer 52; The outer sealing ring 53 has an end flange 14a in the shape of an isosceles trapezoid with a larger outer edge and a smaller inner edge. An end groove is formed on the end face of the outer sealing ring 53 to limit and cooperate with the end flange 14a. The outer sealing ring 53 is positioned on the end flange 14a by the end groove. The side sealing ring 54 has grooves on both the inner and outer walls of the outer sealing ring 53, and the side sealing ring 54 is provided on the grooves. The outer sealing ring 53 is in sealing contact with the side wall of the end groove 10a through the side sealing rings 54 on both sides. The outer sealing ring 53 has an arc-shaped concave reinforcing groove on one end face facing the end groove 10a, and the end face of the sealing ring has a reinforcing rib that matches the reinforcing groove.

[0041] In this embodiment, the inner sealing ring 51 is disposed on the end sealing seat 10, while the outer sealing ring 53 is disposed on the end face of the support sleeve 14. The end sealing seat 10 and the support sleeve 14 are in sealing contact through the inner sealing ring 51 and the outer sealing ring 53, thereby ensuring the sealing effect of the contact between the end faces of the end sealing seat 10 and the support sleeve 14. The outer sealing ring 53, through the cooperation of the snap-fit ​​groove and the snap-fit ​​retainer 52, allows the inner sealing ring 51 to be better fixed on the end recess 10a of the end sealing seat 10. The outer sealing ring 53 is fixedly connected to the end protrusion 14a of the support sleeve 14 through the end groove, thereby ensuring the structural stability of the connection between the outer sealing ring 53 and the support sleeve 14. At the same time, the side sealing ring 54 ensures the sealing performance of the contact between the outer sealing ring 53 and the end recess 10a. The cooperation of the reinforcing rib and the reinforcing groove ensures the sealing performance of the contact between the inner sealing ring 51 and the outer sealing ring 53, while the arc-shaped reinforcing rib and the reinforcing groove ensure the wear resistance of both. This reduces the wear of the end seal 50 when the support sleeve 14 and the inner rod 5 rotate synchronously.

[0042] Example 9: This embodiment provides a production equipment for high-strength lightweight materials, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0043] The outer reinforcing member 60 includes: The outer support frame 61 has an outer support groove 11a on the inner wall of the outer positioning sleeve 11, and the outer support frame 61 is disposed in the outer support groove 11a. The inner support frame 62 has an inner support groove 10c on the inner wall of the end sealing seat 10, which is opposite to the outer support groove 11a. The inner support frame 62 is disposed on the inner support groove 10c. An inner sealing block 63 is disposed on an inner support frame 62, and a plurality of inner sealing spines 63a extending obliquely outward to support grooves 11a are formed thereon. An outer sealing block 64 is disposed on an outer support frame 61, and a plurality of outer sealing spines 64a extending obliquely toward the inner sealing block 63 are formed thereon. The end of each inner sealing spine 63a abuts against the middle of the side wall of an outer sealing spine 64a.

[0044] In this embodiment, the outer support frame 61 and the inner support frame 62 respectively support the inner sealing block 63 and the outer sealing block 64, ensuring the strength of the inner sealing block 63 fixed to the end sealing seat 10 and the strength of the outer sealing block 64 fixed to the outer positioning sleeve 11. The inner sealing block 63 and the outer sealing block 64 form an interlaced multi-segment sealing structure through the inner sealing ratchet portion 63a and the outer sealing ratchet portion 64a, thereby ensuring the sealing effect of the connection between the end sealing seat 10 and the outer positioning sleeve 11.

[0045] Example 10: This embodiment provides a production process for a production equipment for high-strength lightweight materials. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0046] include: Step 1: Equipment preheating. The controller preheats the extrusion chamber and the extrusion screw through the heating components and the heating medium pumping components, respectively. Step 2, feeding: The controller opens the feeding control valve to allow the material in the feeding hopper to enter the extrusion chamber, where it is then conveyed and mixed by the extrusion screw, and finally discharged from the extrusion chamber. Step 3: Granulation. The discharged molten strip material is cooled and cut to form composite particles.

[0047] In this embodiment, the device is preheated during production to raise the temperature of the extrusion chamber and the extrusion screw to the required production temperature. Then, material is fed into the extrusion chamber through the feed control valve, thereby ensuring uniform heating of the material during production and guaranteeing the quality of the produced particles. The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A production equipment for high-strength lightweight materials, characterized in that, It includes: The base (1) includes a lower support plate and a rack arranged on the lower support plate; The extrusion box (2) is arranged on the rack, and an extrusion chamber is formed in the extrusion box (2). One side of the extrusion box (2) is provided with a feeding hopper connected with the extrusion chamber. The feeding hopper is provided with a feeding control valve at the inlet of the feeding hopper. The box wall of the extrusion box (2) is provided with an external heating assembly around the extrusion chamber; The extrusion screw is arranged in the extrusion chamber and extends out of the extrusion chamber at one end; The drive unit (3) is arranged on the lower support plate and drives the extrusion screw to rotate through a transmission wheel assembly; The extrusion screw includes: The outer rod (4) has a receiving cavity formed at one end thereof, and a spiral transmission part is arranged on the outer rod (4); The inner rod (5) is inserted into the receiving cavity and extends out of the outer rod (4) at one end; The heating medium pumping assembly supplies the heating medium to the inner rod (5) through a pipeline; The control cabinet is provided with a control circuit and a controller.

2. The production equipment for high-strength lightweight material according to claim 1, wherein The outer rod (4) is provided with an outer positioning disc at the end of the one end into which the inner rod (5) is inserted. The outer wall of the end of the inner rod (5) is provided with an inner positioning disc fixedly connected with the outer positioning disc. The outer wall of the inner rod (5) is provided with a heating circulation groove (6) extending along the axial direction of the inner rod (5) and spirally arranged along the circumferential direction. The heating circulation groove (6) is not connected at the head and tail. The one end of the inner rod (5) extending out of the outer rod (4) is provided with a hot inlet (7) and a hot outlet (8) respectively connected with the head and tail of the heating circulation groove (6).

3. The production apparatus of a high-strength lightweight material according to claim 2, characterized by Further comprising: The sealing support frame is arranged at the one end of the inner rod (5) extending out of the outer rod (4), and the inlet passage (12) and the outlet passage (13) are formed on the sealing support frame and connected with the hot inlet (7) and the hot outlet (8) respectively. The sealing support frame includes: The outer fixed frame (9) is arranged on the lower support seat; The outer positioning seat is fixed by the outer fixed frame (9) and is sleeved on one end of the inner rod (5) and supports the inner rod (5); The end plugging seat (10) is arranged on the end of the outer positioning seat away from the inner rod (5) and abuts against the inner rod (5). The inlet passage (12) and the outlet passage (13) are formed on the end plugging seat (10).

4. The production apparatus of a high-strength lightweight material according to claim 3, characterized by Further comprising: The outer positioning seat includes: The outer positioning sleeve (11) is fixed on the outer fixed frame (9); The support sleeve (14) is sleeved on the end of the inner rod (5) and is in interference fit with the inner rod (5). The end of the inner rod (5) is provided with a support ring groove (15) in positioning fit with the support sleeve (14); The inner wall of the support sleeve (14) is provided with a plurality of shaft sleeve sealing grooves. Each shaft sleeve sealing groove is provided with a shaft sleeve sealing ring (16) in sealing contact with the inner rod (5); The outer bearing assembly (17) includes a plurality of bearings, is sleeved on the outer wall of the support sleeve (14), and rotatably connects the support sleeve (14) and the outer positioning sleeve (11); The outer sealing assembly (30) is arranged between the inner wall of the outer positioning sleeve (11) and the outer wall of the support sleeve (14).

5. The apparatus according to claim 4, wherein The end face of the inner rod (5) is formed with a thermal ring groove (18) in communication with the thermal outlet (8), and the thermal ring groove (18) is located outside the thermal inlet (7) and coaxially arranged; The sealing support frame further comprises: Two abutting sealing elements (40) are arranged on the end face of the end sealing seat (10) abutting against the inner rod (5) and are located on both sides of the thermal ring groove (18); An end sealing element (50) extends through one end of the support sleeve (14) and abuts against the end sealing seat (10), and the end sealing element (50) is arranged between the end sealing seat (10) and the end face of the support sleeve (14); An external reinforcing element (60) is arranged between the outer wall of the end sealing seat (10) and the inner wall of the outer positioning sleeve (11).

6. The apparatus according to claim 4, wherein The outer sealing assembly (30) comprises: A positioning clamp spring (31) is arranged on the outer wall of the support sleeve (14) and is arranged on the positioning clamp groove; An inner ring sealing element is arranged on the outer wall of the support sleeve (14) by the positioning clamp spring (31); An outer ring sealing element is arranged on the inner wall of the outer positioning sleeve (11) and is positioned by the outer bearing assembly (17) and sealingly cooperates with the inner sealing ring (51).

7. The production equipment for a high-strength lightweight material according to claim 6, wherein The inner ring sealing element comprises: An inner support framework (32) is formed with an inner clamp groove (32a) on the inner wall thereof for limiting cooperation with the positioning clamp spring (31), the outer wall thereof is formed with a positioning portion (32b) with a positioning groove on one side, and the outer wall thereof is formed with a ring column-shaped sealing contact portion (32c) on the other side; An inner sealing element (33) is arranged on the positioning portion (32b); The outer ring sealing element comprises: An outer support framework (34) is coaxially arranged outside the inner support framework (32) and comprises an abutting portion (34a) abutting against the outer bearing assembly (17) and located outside the positioning portion (32b), a stress receiving portion (34b) fixedly cooperating with the inner wall of the outer positioning sleeve (11), and a surrounding portion (34c) extending to the outer wall of the support sleeve (14) and surrounding the sealing contact portion (32c); An outer sealing element (35) is arranged on the surrounding portion (34c) and sealingly cooperates with the sealing contact portion (32c); The inner sealing element (33) sealingly cooperates with the abutting portion (34a) and the stress receiving portion (34b) of the outer support framework (34).

8. The apparatus according to claim 7, wherein The inner sealing element (33) comprises: A stress receiving framework (331) is limitedly arranged on the positioning portion (32b); An inner sealing sheet (332) is supported by the stress receiving framework (331) and is fixed on the positioning groove, the inner sealing sheet (332) is formed with a side sealing portion (332a) toward the abutting portion (34a), is formed with a first sealing portion (332b) and a second sealing portion (332c) toward the stress receiving portion (34b), a support groove portion (332d) is formed between the first sealing portion (332b) and the side sealing portion (332a), and an expansion support groove (332e) is formed on the end face of the second sealing portion (332c) and faces the surrounding portion (34c).

9. The production equipment of high-strength lightweight material according to claim 7, characterized in that, The outer sealing piece (35) comprises: An outer sealing sheet (351) fixed on the surrounding part (34c), and a clamping groove (351a) formed on one end of the outer sealing sheet (351) for clamping the end of the surrounding part (34c), and a sealing top (351b) formed on the other end for sealing contact with the end face of the surrounding part (34c); A plurality of outer sealing wings (352) equidistantly distributed on the outer wall of the outer sealing sheet (351) and sealingly contacted with the sealing contact part (32c).

10. A production process suitable for the production apparatus of the high-strength lightweight material according to any one of claims 1 to 9, characterized by, Comprise: Step one: equipment preheating, the controller preheats the extrusion chamber and the extrusion screw through the heating assembly and the heating medium pumping assembly respectively; Step two, feeding, the controller lets the material in the feeding hopper enter the extrusion chamber by opening the feeding control valve, and then the material is mixed by the conveying and stirring of the extrusion screw, and finally the material is discharged from the extrusion chamber; Step three, granulation, the extruded molten strip-shaped material is cooled and cut to form composite particles.

Images