Opening and closing structure and filtering device with same

Abstract

The utility model relates to the technical field of plastic processing equipment, in particular to an opening and closing structure and a filtering device with the opening and closing structure, the opening and closing structure comprises a main body and a cover body which are in threaded connection, the cover body comprises a supporting assembly and a rotating assembly driven by a driving motor to rotate, and the supporting assembly and the rotating assembly are coaxially and rotatably connected. The rotating assembly is in threaded connection with the main body, and the supporting assembly is rotationally connected with the main body; the filtering device comprises a slag discharging screw cylinder, a slag discharging screw rod and the opening and closing structure, the slag discharging screw rod is rotationally arranged in the slag discharging screw cylinder, and the main body is located at the end of the slag discharging screw cylinder. According to the opening and closing structure and the filtering device with the opening and closing structure, the driving motor drives the rotating assembly to rotate so that the cover body can be closed and opened relative to the main body, the opening and closing efficiency is improved, the link of manual operation is omitted, and workers are prevented from being scalded in the operation process.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing equipment, and more specifically, to an opening and closing structure and a filtering device having the same. Background Art

[0002] In the field of plastic recycling, the recycling of plastics is inseparable from high-temperature melting and melt filtration. The filter screen needs to be disassembled and cleaned or disassembled and replaced after being used for a period of time. In some application scenarios, the slag discharge screw also needs to be maintained regularly. The recycling equipment is provided with an opening and closing structure to facilitate the user to perform operation and maintenance on the filter screen or the slag discharge screw. In order to ensure the sealing of the environment inside the recycling equipment, the connection stability and sealing performance between the opening and closing structure and the equipment main body are particularly important, and complex connection means and sealing means are often adopted between the opening and closing structure and the equipment main body. Correspondingly, the operation of the opening and closing structure is complex and time-consuming. Since the environment inside the equipment is a high-temperature environment, there is a risk of scalding during manual operation. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an opening and closing structure and a filtering device having the same. By means of electric opening and closing, the opening and closing efficiency is improved, the manual operation link is omitted, and the risk of scalding during manual operation is avoided.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is:

[0005] Provide an opening and closing structure, including a main body and a cover body connected by threads. The cover body includes a support assembly and a rotating assembly driven by a driving motor to rotate. The support assembly and the rotating assembly are coaxially rotatably connected. The rotating assembly is threadedly connected to the main body, and the support assembly is rotatably connected to the main body.

[0006] In the opening and closing structure of the utility model, the support assembly is rotatably connected to the main body, so that the cover body can be conveniently opened relative to the main body; when the cover body is closed relative to the main body, the driving motor drives the rotating assembly to rotate, so that the cover body is screwed tightly relative to the main body; when the cover body needs to be opened relative to the main body, the driving motor drives the rotating assembly to rotate, so that the cover body is unscrewed relative to the main body. In the opening and closing structure of the utility model, the driving motor drives the rotating assembly to rotate to realize the closing and opening of the cover body relative to the main body, improve the opening and closing efficiency, omit the manual operation link, and avoid scalding during manual operation.

[0007] Further, one side of the support assembly is rotatably connected to the main body through a three-axis hinge, and the other side of the support assembly is connected to the main body through a locking structure. With such a setting, it is convenient to open and close the cover body relative to the main body.

[0008] Furthermore, the three-axis hinge includes a first fixing member, a second fixing member, a first rotating shaft, a second rotating shaft and a rotating block, the first fixing member is rotatably connected to the cover body via a third rotating shaft, the second fixing member is fixed to the main body, the first fixing member is rotatably connected to the rotating block via the first rotating shaft, and the second fixing member is rotatably connected to the rotating block via the second rotating shaft. The main body and the cover body are rotatably connected using the three-axis hinge, so that the rotating connection between the cover body and the main body and the threaded connection between the cover body and the main body do not interfere with each other.

[0009] Furthermore, the first fixing member is provided with a first mounting groove, the second fixing member is provided with a second mounting groove, and the rotating block is partially rotated in the first mounting groove and partially rotated in the second mounting groove. The first mounting groove and the second mounting groove are provided to facilitate the installation connection between the first fixing member, the second fixing member and the rotating block.

[0010] Furthermore, the locking structure includes a clamping portion provided on the cover body and a buckle portion provided on the main body, and the clamping portion is engaged with the buckle portion. The clamping portion and the buckle portion are engaged with each other to realize the preliminary connection between the main body and the cover body, and align the internal thread on the main body with the external thread on the cover body, so as to facilitate the subsequent electric rotation.

[0011] Furthermore, the outer periphery of the cover is provided with a first threaded portion and a first positioning portion, the main body is provided with a second threaded portion threadedly connected to the first threaded portion and a second positioning portion positioned in cooperation with the first positioning portion, the diameter of the first positioning portion is smaller than the diameter of the first threaded portion, and the first positioning portion is provided at the outer periphery of the cover body close to the main body. The cooperation of the first positioning portion and the second positioning portion realizes the positioning before the main body and the cover body are threadedly connected and clamped, and when the first positioning portion and the second positioning portion cooperate, the position of the clamping portion is aligned with the position of the buckle portion, and the first threaded portion and the second threaded portion are aligned.

[0012] Furthermore, a limiting ring is provided in the support component, and a limiting groove is provided in the rotation component to cooperate with the limiting ring; or a limiting groove is provided in the support component, and a limiting ring is provided in the rotation component to cooperate with the limiting groove. The limiting groove and the limiting ring cooperate to allow only relative rotation to occur between the rotation component and the support component, but no axial movement or radial movement to occur, so as to ensure the connection stability between the two.

[0013] Furthermore, an operating hand wheel is provided at the end of the rotating assembly, and the provision of the operating hand wheel facilitates manual operation when the operator opens or closes the cover body.

[0014] The utility model also provides a filtering device, comprising a slag discharge barrel, a slag discharge screw and the above-mentioned opening and closing structure, wherein the slag discharge screw is rotatably arranged in the slag discharge barrel, and the main body is located at the end of the slag discharge barrel.

[0015] For the filtering device of the present utility model, the opening and closing structure is located at the end of the slag discharge screw cylinder, and the cover body is rotatably connected to the slag discharge screw cylinder. The rotation of the rotating assembly is driven by a driving motor to realize the closing and opening of the cover body relative to the main body, improving the opening and closing efficiency, eliminating the manual operation link, and avoiding scalding during manual operation.

[0016] Furthermore, the rotating assembly is provided with a connection hole, and a coupling piece is detachably connected in the connection hole. The other end of the coupling piece is connected to the outer periphery of the end of the slag discharge screw. The rotation of the rotating assembly and the slag discharge screw share a power source, simplifying the device design and saving the manufacturing cost of the device.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] For the opening and closing structure of the present utility model and the filtering device having the same, the rotation of the rotating assembly is driven by a driving motor to realize the closing and opening of the cover body relative to the main body, improving the opening and closing efficiency, eliminating the manual operation link, and avoiding scalding during manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram when the cover body of the opening and closing structure is opened;

[0020] Figure 2 It is a schematic structural diagram when the cover body of the opening and closing structure is closed;

[0021] Figure 3 It is a schematic structural diagram of the cover body;

[0022] Figure 4 It is a schematic structural diagram of the coupling piece;

[0023] In the drawings: 100, main body; 110, second thread part; 120, second positioning part; 130, second positioning step; 200, cover body; 210, support assembly; 220, rotating assembly; 221, connection hole; 222, operating handwheel; 230, first thread part; 240, first positioning part; 250, first positioning step; 300, three-axis hinge; 310, first fixing piece; 320, second fixing piece; 330, first rotating shaft; 340, second rotating shaft; 350, rotating block; 360, third rotating shaft; 370, first installation groove; 380, second installation groove; 400, locking structure; 500, coupling piece; 600, slag discharge screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present utility model will be further described below in conjunction with specific embodiments. Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams rather than physical diagrams, and should not be construed as a limitation on this patent; in order to better illustrate the embodiments of the present utility model, some components in the attached drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0025] In the attached drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the attached drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and should not be construed as a limitation on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] Embodiment 1

[0027] This embodiment is the first embodiment of the opening and closing structure. The opening and closing structure of this embodiment is used in plastic processing equipment, specifically for opening or closing to perform operations or maintenance inside the plastic processing equipment. This embodiment is particularly applicable to recycling equipment, specifically for opening or closing the recycling equipment.

[0028] The opening and closing structure in this embodiment includes a main body 100 and a cover body 200 connected by threads. The cover body 200 includes a support assembly 210 and a rotating assembly 220 driven by a driving motor to rotate. The support assembly 210 and the rotating assembly 220 are coaxially rotatably connected. The rotating assembly 220 is threadedly connected to the main body 100, and the support assembly 210 is rotatably connected to the main body 100, as Figures 1 to 3 shown.

[0029] In this embodiment, a limiting ring is provided inside the support assembly 210, and a limiting groove is provided on the rotating assembly 220 and is arranged in cooperation with the limiting ring; alternatively, a limiting groove is provided inside the support assembly 210, and a limiting ring is provided on the rotating assembly 220 and is arranged in cooperation with the limiting groove. The cooperation between the limiting groove and the limiting ring enables only relative rotation to occur between the rotating assembly 220 and the support assembly 210, and axial movement and radial movement cannot occur, so as to ensure the connection stability between the two. In this embodiment, the driving motor for driving the rotation of the rotating assembly 220 can be fixedly installed on the support assembly 210, and the output shaft of the driving motor is connected to the rotating assembly 220 to drive the rotation of the rotating assembly 220. An operating handwheel 222 can be provided at the end of the rotating assembly 220 in this embodiment, so as to facilitate the manual operation when the operator opens or closes the cover body 200. The operating handwheel 222 can be prepared by using a heat-insulating structure, thereby reducing the risk of scalding during operation.

[0030] Wherein, one side of the support assembly 210 is rotatably connected to the main body 100 through a three-axis hinge 300, and the other side of the support assembly 210 is connected to the main body 100 through a locking structure 400. Specifically, the three-axis hinge 300 includes a first fixing member 310, a second fixing member 320, a first rotating shaft 330, a second rotating shaft 340, and a rotating block 350. The first fixing member 310 is rotatably connected to the cover body 200 through a third rotating shaft 360. The second fixing member 320 is fixed to the main body 100. The first fixing member 310 is rotatably connected to the rotating block 350 through the first rotating shaft 330, and the second fixing member 320 is rotatably connected to the rotating block 350 through the second rotating shaft 340. The first fixing member 310 is provided with a first installation groove 370, the second fixing member 320 is provided with a second installation groove 380, and part of the rotating block 350 rotates in the first installation groove 370 and part rotates in the second installation groove 380. The locking structure 400 includes a clamping portion provided on the cover body 200 and a buckling portion provided on the main body 100, and the clamping portion is clamped with the buckling portion.

[0031] The setting of the three-axis hinge 300 enables multiple degrees of freedom in the connection between the cover body 200 and the main body 100 of the present utility model, including: the cover body 200 is rotatably connected to the first fixing member 310 through the third rotating shaft 360, the first fixing member 310 is rotatably connected to the rotating block 350 through the first rotating shaft 330, and the rotating block 350 is rotatably connected to the second fixing member 320 through the second rotating shaft 340. The settings of the engaging part and the buckling part facilitate the processing of the locking structure 400 on the main body 100 and the cover body 200, and the locking operation between the main body 100 and the cover body 200 is simple. In addition to the locking method using the engaging part and the buckling part, other locking structures 400 that can lock one end of the engaging part and the buckling part together can also be used. For the cover body 200, the position rotatably connected to the main body 100 is called the rotating position, and the position locked to the main body 100 is called the locking position. The rotating position and the locking position are symmetrical or substantially symmetrical on both sides of the cover body 200.

[0032] The connection between the main body 100 and the cover body 200 mainly relies on threaded connection. The rotational connection between them is to ensure that the cover body 200 will never be separated from the main body 100 when the cover body 200 is opened or closed relative to the main body 100. The locking between them is to align the threads on the main body 100 and the cover body 200 so as to realize the tightening and opening of the cover body 200 by rotating the rotating assembly 220. The setting of the three-axis hinge 300 enables the rotational connection between the cover body 200 and the main body 100 and the threaded connection between the cover body 200 and the main body 100 to not interfere with each other, and the cover body 200 can be smoothly and quickly opened and closed by rotating the rotating assembly 220.

[0033] In addition, in this embodiment, a first threaded portion 230 and a first positioning portion 240 are provided on the outer periphery of the cover body 200, the main body 100 is provided with a second threaded portion 110 threadedly connected to the first threaded portion 230 and a second positioning portion 120 that cooperates with the first positioning portion 240 for positioning. The diameter of the first positioning portion 240 is smaller than the diameter of the first threaded portion 230, so as to form a first positioning step 250 between the first positioning portion 240 and the first threaded portion 230. The first positioning portion 240 is provided on the outer periphery of the part of the cover body 200 close to the main body 100. The diameter of the second positioning portion 120 is smaller than the diameter of the second threaded portion 110, so as to form a second positioning step 130 between the second positioning portion 120 and the second threaded portion 110. In this embodiment, the first threaded portion 230 is specifically provided on the rotating assembly 220, and the first positioning portion 240 is specifically provided on the part of the support assembly 210 that passes through the rotating assembly 220. The cooperation between the first positioning portion 240 and the second positioning portion 120 realizes the positioning before the threaded connection and clamping connection between the main body 100 and the cover body 200. When the first positioning step 250 and the second positioning step 130 cooperate, the position of the engaging part is aligned with the position of the buckling part, and the first threaded portion 230 and the second threaded portion 110 are aligned.

[0034] When this embodiment is implemented, when it is necessary to open the cover body 200, the driving motor operates to drive the rotating assembly 220 to rotate. The rotating assembly 220 rotates relative to the main body 100 assembly until the first thread portion 230 is disengaged from the second thread portion 110. Then, the locking structure 400 is opened to release the locking of the locking structure 400. By operating the handwheel 222, the cover body 200 is pulled outwards. The first positioning portion 240 and the second positioning portion 120 are gradually separated. By continuing to pull the cover body 200 outwards, the cover body 200 can be opened. When it is necessary to cover the cover body 200, first, the cover body 200 is rotated inwards through the operation of the handwheel 222 until the first positioning step 250 and the second positioning step 130 are engaged. At this time, the engaging portion and the buckling portion are engaged, and the first thread portion 230 and the second thread portion 110 are aligned. The driving motor operates to drive the rotating assembly 220 to rotate. The rotating assembly 220 rotates relative to the main body 100 assembly until the first thread portion 230 is connected to the second thread portion 110. Thus, the electric opening and closing of the cover body 200 relative to the main body 100 are realized, the opening and closing efficiency is improved, the manual operation link is omitted, and the risk of scalding during manual operation is avoided.

[0035] Embodiment Two

[0036] This embodiment is the second embodiment of the opening and closing structure. This embodiment is similar to Embodiment One. The difference is that in this embodiment, the driving motor that drives the rotating assembly 220 to rotate is the same driving motor as the driving motor that drives the slag discharge screw 600 to rotate. Specifically, in this embodiment, one end of the slag discharge screw 600 extends into the inner cavity of the main body 100.

[0037] It should be noted that the driving motor that drives the rotating assembly 220 to rotate in this embodiment is not limited to sharing a driving motor with the slag discharge screw 600, and can also share a driving motor with other rotating main shafts coaxially arranged with the rotating assembly 220. The present invention does not make a limitation here.

[0038] The rotating assembly 220 is provided with a connection hole 221. A coupling member 500 is detachably connected in the connection hole 221. The other end of the coupling member 500 is connected to the outer periphery of the end of the slag discharge screw 600. In this embodiment, the connection hole 221 is specifically a hexagonal hole, and the cross-section of the end of the slag discharge screw 600 is also hexagonal. One end of the coupling member 500 is connected to the rotating assembly 220, and one end is connected to the slag discharge screw 600, as Figure 4 shown. To prevent the coupling member 500 from being disengaged from the rotating assembly 220 or the slag discharge screw 600 when it rotates together with the rotating assembly 220 and the slag discharge screw 600, a limiting member is detachably connected to the end of the connection hole 221 in this embodiment.

[0039] When this embodiment is implemented, when it is necessary to electrically open or close the cover body 200, the coupling member 500 is inserted into the connection hole 221 and sleeved on the outer periphery of the slag discharge screw 600. By controlling the rotation of the slag discharge screw 600, under the action of the coupling member 500, the rotating assembly 220 will also rotate together, so as to tighten or loosen the first thread portion 230 and the second thread portion 110, and complete the electric opening or electric closing of the cover body 200. After the opening or closing operation of the cover body 200 is completed, the coupling member 500 is taken out, and the connection and coupling between the slag discharge screw 600 and the rotating assembly 220 are released. At this time, the rotation of the slag discharge screw 600 will no longer drive the rotation of the rotating assembly 220, and the rotating assembly 220 will not interfere with the rotation of the slag discharge screw 600, and the slag discharge screw 600 can work normally.

[0040] Embodiment Three

[0041] This embodiment is an embodiment of the filtering device, including the opening and closing structure described in Embodiment 1 or Embodiment 2. The filtering device of the present invention includes a slag discharge cylinder, a slag discharge screw 600, and the opening and closing structure described in Embodiment 1 or Embodiment 2. The slag discharge screw 600 is rotatably arranged in the slag discharge cylinder, and the main body 100 is located at the end of the slag discharge cylinder.

[0042] When the opening and closing structure described in Embodiment 1 is adopted, when it is necessary to open the cover body 200, the driving motor works to drive the rotating assembly 220 to rotate. The rotating assembly 220 rotates relative to the main body 100 assembly until the first thread portion 230 and the second thread portion 110 are disengaged. Then, the locking structure 400 is opened to release the locking of the locking structure 400. By operating the hand wheel 222, the cover body 200 is pulled outwards, and the first positioning portion 240 and the second positioning portion 120 are gradually separated. Continuing to pull the cover body 200 outwards can open the cover body 200; when it is necessary to cover the cover body 200, first rotate the cover body 200 inwards through the hand wheel 222 until the first positioning step 250 and the second positioning step 130 are engaged. At this time, the clamping portion and the buckling portion are clamped, and the first thread portion 230 and the second thread portion 110 are aligned. The driving motor works to drive the rotating assembly 220 to rotate, and the rotating assembly 220 rotates relative to the main body 100 assembly until the first thread portion 230 and the second thread portion 110 are connected. The process of electrically opening or closing the cover body 200 and the rotation process of the rotating assembly 220 are independent of each other and do not affect each other.

[0043] When adopting the opening and closing structure described in the second embodiment, when it is necessary to electrically open or close the cover body 200, insert the coupling member 500 into the connection hole 221 and sleeve it on the outer periphery of the slag discharge screw 600, and control the rotation of the slag discharge screw 600. Under the action of the coupling member 500, the rotating assembly 220 will also rotate together, so as to tighten or loosen the first thread portion 230 and the second thread portion 110, and complete the electric opening or electric closing of the cover body 200. After the opening or closing operation of the cover body 200 is completed, take out the coupling member 500, and the connection and coupling between the slag discharge screw 600 and the rotating assembly 220 are released. At this time, the rotation of the slag discharge screw 600 will no longer drive the rotation of the rotating assembly 220, and the rotating assembly 220 will not interfere with the rotation of the slag discharge screw 600, and the slag discharge screw 600 can work normally. The association between the movement of the rotating assembly 220 and the movement of the slag discharge screw 600 is realized through the installation of the coupling member 500, and the isolation between the movement of the rotating assembly and the movement of the slag discharge screw 600 is realized through the disassembly of the coupling member 500.

[0044] In the specific content of the above specific implementation manners, each technical feature can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not exist in contradiction, they should all be considered as the scope described in this specification.

[0045] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An opening and closing structure, comprising a main body (100) and a cover body (200) connected by threads, characterized in that, The cover body (200) includes a support assembly (210) and a rotating assembly (220) driven by a driving motor to rotate. The support assembly (210) and the rotating assembly (220) are coaxially and rotatably connected. The rotating assembly (220) is threadedly connected to the main body (100), and the support assembly (210) is rotatably connected to the main body (100).

2. The opening and closing structure according to claim 1, characterized in that, One side of the support assembly (210) is rotatably connected to the main body (100) through a three-axis hinge (300), and the other side of the support assembly (210) is connected to the main body (100) through a locking structure (400).

3. The opening and closing structure according to claim 2, characterized in that, The three-axis hinge (300) includes a first fixing member (310), a second fixing member (320), a first rotating shaft (330), a second rotating shaft (340), and a rotating block (350). The first fixing member (310) is rotatably connected to the cover body (200) through a third rotating shaft (360). The second fixing member (320) is fixed to the main body (100). The first fixing member (310) and the rotating block (350) are rotatably connected through the first rotating shaft (330), and the second fixing member (320) and the rotating block (350) are rotatably connected through the second rotating shaft (340).

4. The opening and closing structure according to claim 3, wherein, The first fixing member (310) is provided with a first installation groove (370), the second fixing member (320) is provided with a second installation groove (380), and the rotating block (350) rotates partially within the first installation groove (370) and partially within the second installation groove (380).

5. The opening and closing structure according to claim 2, wherein, The locking structure (400) includes a clamping portion provided on the cover body (200) and a buckling portion provided on the main body (100), and the clamping portion is clamped with the buckling portion.

6. The opening and closing structure according to claim 1, characterized in that The outer periphery of the cover body (200) is provided with a first thread portion (230) and a first positioning portion (240). The main body (100) is provided with a second thread portion (110) threadedly connected to the first thread portion (230) and a second positioning portion (120) cooperating with the first positioning portion (240) for positioning. The diameter of the first positioning portion (240) is smaller than the diameter of the first thread portion (230), and the first positioning portion (240) is provided on the outer periphery of the part of the cover body (200) close to the main body (100).

7. The opening and closing structure according to any one of claims 1 to 6, characterized in that A limiting ring is provided inside the support assembly (210), and a limiting groove cooperating with the limiting ring is provided on the rotating assembly (220); or a limiting groove is provided inside the support assembly (210), and a limiting ring cooperating with the limiting groove is provided on the rotating assembly (220).

8. The opening and closing structure according to any one of claims 1 to 6, characterized in that, An operation handwheel (222) is provided at the end of the rotating assembly (220).

9. A filtering device, characterized in that, It includes a slag discharge screw barrel, a slag discharge screw (600), and an opening and closing structure according to any one of claims 1 to 8. The slag discharge screw (600) is rotatably arranged inside the slag discharge screw barrel, and the main body (100) is located at the end of the slag discharge screw barrel.

10. The filtering device according to claim 9, characterized in that, The rotating assembly (220) is provided with a connection hole (221), and a coupling member (500) is detachably connected in the connection hole (221). The other end of the coupling member (500) is connected to the outer periphery of the end of the slag discharge screw (600).

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