Polyisobutene filtering device

Abstract

The invention discloses a polyisobutene filtering device, and relates to the technical field of filtering. The polyisobutene filtering device comprises a filtering container and a sealing cover used for sealing the filtering container, a filtering inlet is formed in the sealing cover, a filtering outlet is formed in the filtering container, a filter fixing table is arranged in the filtering container, and a melt filter is inserted into the filter fixing table; the melt filter is pressed on the filter fixing table through a sealing cover, and a plurality of lock heads used for pressing the sealing cover are hinged to the periphery of a container opening of the filtering container; the chain wheels are fixedly connected with the lock head, the chain wheels and the hinge axis of the lock head are coaxially arranged, and the multiple chain wheels are connected in a matched mode through chains. The melt filter and the sealing cover of the filtering container are fixed in a pressing and fixing mode, bolts used for fixing the sealing cover and a threaded connector of the melt filter do not need to be disassembled and assembled repeatedly, and the later cleaning and maintaining efficiency of the melt filter is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of filtration, in particular to a polyisobutylene filtration device. Background Art

[0002] Polyisobutylene (PIB) is a polymer made from isobutylene by cationic polymerization, and its molecular weight can range from hundreds to millions. It is a typical saturated linear polymer. The main body of the molecular chain does not contain double bonds, and there are no long branches. Its structural unit is -(CH2-C(CH3)2)-, which has no asymmetric carbon atoms, and the structural units are connected in a regular sequence from head to tail.

[0003] Polyisobutylene is mainly used in many fields such as petroleum additives and adhesives. It is used to make pressure-sensitive adhesives and sealants. It can also be used as a thickener and used with other materials to improve adhesion, flexibility, aging resistance, air tightness and electrical insulation. It is also used to make wires and cables, plasticizers, gum-based chewing materials, etc.

[0004] During the production process of polyisobutylene, certain impurities will be generated. Since the appearance quality of polyisobutylene is mainly determined by its transparency, removing impurities in polyisobutylene and improving its appearance quality are the key research directions of existing polyisobutylene manufacturers.

[0005] Since polyisobutylene is highly viscous, high-pressure resistant filter materials, such as stainless steel filter elements, are required for filtration. Melt filters are the preferred stainless steel filter element filters for polyisobutylene filtration. In reality, melt filters are used to filter polyisobutylene. The melt filters need to be frequently removed from the filter container to clean impurities and perform maintenance to ensure the filtration effect while also increasing the service life of the melt filters.

[0006] However, in the prior art, the melt filter is usually fixed in the filter container in the form of threaded fitting, and the sealing cover used to seal the filter container is uniformly flange-connected and fixedly connected by a large number of bolts. This results in a large number of manual efforts to repeatedly disassemble the bolts of the sealing cover and the threaded interface of the melt filter when the melt filter is removed later. This not only requires a lot of manpower and results in low efficiency in later cleaning and maintenance, but also long-term threaded disassembly and assembly of the melt filter will affect the connection strength and sealing effect of the threaded interface of the melt filter. Summary of the invention

[0007] The object of the present invention is to provide a polyisobutylene filtering device, which adopts a compression fixing method to fix the melt filter and the sealing cover of the filter container, and does not need to repeatedly disassemble and assemble the bolts used to fix the sealing cover and the threaded interface of the melt filter, thereby greatly increasing the efficiency of later cleaning and maintenance of the melt filter and avoiding the problem that the long-term thread disassembly and assembly of the melt filter will affect the connection strength and sealing effect of the threaded interface of the melt filter.

[0008] To achieve the above object, the present invention provides the following technical solution: a polyisobutylene filtering device, comprising a filtering container and a sealing cover for sealing the filtering container, the sealing cover is provided with a filtering inlet, the filtering container is provided with a filtering outlet, a filter fixing platform is provided in the filtering container, and a melt filter is plugged into the filter fixing platform; The melt filter is pressed onto the filter fixing platform through a sealing cover, and a plurality of locks for pressing the sealing cover are hinged around the container opening of the filter container; It also includes a sprocket wheel fixedly connected to the lock head, the sprocket wheel and the hinge axis of the lock head are coaxially arranged, and a plurality of the sprocket wheels are connected by chains.

[0009] Preferably, a support platform for supporting the filter fixing platform is arranged on the inner wall of the filter container, and a limiting plug hole for plugging the melt filter is arranged on the filter fixing platform.

[0010] Preferably, sealing rubber pads are provided between the sealing cover and the filter fixing platform, between the sealing cover and the melt filter, between the melt filter and the filter fixing platform, and between the filter fixing platform and the support platform.

[0011] Preferably, a limiting groove is provided on the top surface of the filter fixing platform and around the limiting insertion hole, and an ear plate portion that is snap-fitted with the limiting groove is provided at the fluid inlet end of the melt filter.

[0012] Preferably, a plurality of hinged seats are arranged around the container opening of the filter container, a rotating shaft hingedly matched with the hinged seats is arranged at the bottom of the lock head, and a handle is arranged at the top of the lock head.

[0013] Preferably, a chamfered portion is provided on a side edge of the bottom surface of the lock head.

[0014] Preferably, a protective cover for protecting the chain is provided on the outer side of the filter container.

[0015] Preferably, the melt filters are arranged in plurality and evenly arranged on the filter fixing platform, the sealing cover is arranged hollow, the filter inlet includes a first filter inlet arranged at the top of the sealing cover, and also includes a plurality of second filter inlets arranged at the bottom of the sealing cover corresponding to the melt filters one by one.

[0016] Preferably, a limiting plug is provided at the tail end of the melt filter, and a plurality of limiting plugs corresponding to the tail ends of the melt filters are transitionally connected via a retaining frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention fixes the melt filter inside the filter container by pressing, and the melt filter is pressed and fixed on the filter fixing platform through the sealing cover. Under the joint limiting action of the filter fixing platform and the sealing cover, the melt filter is stably connected to the inside of the filter container. When the sealing cover is opened, the melt filter can be directly taken out without repeatedly disassembling and assembling the threaded interface of the melt filter as in the traditional fixing method, thereby avoiding the problem of affecting the connection strength and sealing effect of the threaded interface of the melt filter due to long-term thread disassembly and assembly of the melt filter.

[0018] 2. In the present invention, the sealing cover is fixed on the filter container by a plurality of rotatable locks, and the plurality of locks are connected by a linkage assembly. When one lock is driven to rotate, all other locks rotate synchronously, so that all the locks can be rotated quickly, thereby improving the efficiency of disassembly and assembly of the sealing cover.

[0019] 3. In the present invention, all the locks are rotated synchronously at the same time through the linkage assembly, so that the sealing cover is evenly stressed when it is pressed, ensuring that the sealing cover is stably stressed to press the melt filter and the filter fixing platform downward, and preventing the sealing cover from tilting due to uneven stress when the locks are rotated one by one to press the sealing cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an appearance diagram of the present invention; Figure 2 A diagram showing the arrangement of the sprocket and chain of the present invention; Figure 3 An exploded view of the present invention; Figure 4 It is a schematic diagram of the structure of the filtering container of the present invention; Figure 5 The structure of the sealing cover of the present invention is shown in FIG. Figure 1 ; Figure 6 The structure of the sealing cover of the present invention is shown in FIG. Figure 2 ; Figure 7 This is a diagram showing the internal structure of the sealing cover of the present invention; Figure 8 This is a diagram showing the matching mode of the melt filter and the filter fixing platform of the present invention; Fig. 9 It is a structural schematic diagram of the filter fixing platform of the present invention; Fig.10 This is a diagram showing the matching mode of the melt filter and the retaining frame of the present invention; Fig.11 It is a schematic diagram of the structure of the retainer of the present invention; Fig.12 It is a planar structural diagram of the melt filter of the present invention; Fig.13 This is a diagram showing the arrangement of the ear plate portion of the present invention; Fig.14 This is a diagram of the arrangement of the limit plug of the present invention; Fig.15 It is a structural schematic diagram of the lock of the present invention; Fig.16 It is a schematic diagram of the arrangement of the chamfered portion of the present invention.

[0021] In the figure: 1-filter container, 11-filter outlet, 12-support platform, 13-first sealing pad, 14-hinged seat, 15-protective cover, 2-sealing cover, 21-first filter inlet, 22-second filter inlet, 23-reinforcement rib, 24-second sealing pad, 25-boss part, 3-melt filter, 31-ear plate, 32-limiting plug, 33-third sealing pad, 34-fourth sealing pad, 4-filter fixing platform, 41-limiting jack, 42-limiting slot, 5-cage, 51-cage socket, 6-lock, 61-handle, 62-shaft, 63-chamfered part, 7- Sprocket, 8-Chain. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figures 1 to 5As shown, a polyisobutylene filtering device comprises a filtering container 1 and a sealing cover 2 for sealing the filtering container 1, wherein the sealing cover 2 is provided with a filtering inlet, and the filtering container 1 is provided with a filtering outlet 11, a filter fixing platform 4 is provided in the filtering container 1 and between the filtering inlet and the filtering outlet 11, a melt filter 3 is plugged into the filter fixing platform 4, the melt filter 3 is located between the filter fixing platform 4 and the filtering outlet 11, and the fluid inlet end of the melt filter 3 faces the filtering inlet.

[0024] Specifically in this embodiment, the filter fixing platform 4 and the filter container 1 are connected in a non-fixed manner, that is, in a movable manner. Figure 3 and Figure 4 As shown, a support platform 12 is provided on the inner wall of the filter container 1, and the support platform 12 is continuously arranged along the inner wall of the filter container 1 to form a closed loop. The cross section of the filter fixing platform 4 is consistent with the cross section of the inner wall of the filter container 1, and the periphery of the filter fixing platform 4 is in contact with the inner wall of the filter container 1. The ground of the filter fixing platform 4 is supported by the support platform 12. The filter fixing platform 4 is provided with a limiting plug hole 41 (such as Figure 8 and Fig. 9 As shown in the figure, the melt filter 3 is inserted into the filter container 1 through the limiting plug hole 41. After the melt filter 3 is inserted into the limiting plug hole 41, the main filtering part of the melt filter 3 is located between the filter fixing platform 4 and the filtering outlet 11, and the fluid inlet end of the melt filter 3 and the top surface of the filter fixing platform 4 are pressed on the support platform 12 through the sealing cover 2.

[0025] During filtration, the polyisobutylene is pressurized and introduced into the filter container 1 through the filter inlet, and the polyisobutylene enters the melt filter 3 through the fluid inlet of the melt filter 3 and is filtered. The filtered polyisobutylene flows from the melt filter 3 to the filter outlet 11 to complete the filtration.

[0026] like Figure 1 and Figure 2 As shown, as a specific embodiment, a plurality of locks 6 are rotatably arranged around the container opening of the filter container 1, and the sealing cover 2 is pressed against the filter container 1 by the locks 6. It should be noted that in order to ensure the sealing between the sealing cover 2 and the filter fixing platform 4, the sealing between the sealing cover 2 and the melt filter 3, the sealing between the melt filter 3 and the filter fixing platform 4, and the sealing between the filter fixing platform 4 and the support platform 12, sealing rubber pads are arranged between the above structures.

[0027] Specific: like Figure 6As shown, a second sealing rubber pad 24 is arranged around the bottom of the sealing cover 2 , so that when the sealing cover 2 is pressed against the top of the filter fixing platform 4 , a seal is formed between the sealing cover 2 and the filter fixing platform 4 .

[0028] like Figure 6 , Figure 8 , Fig. 9 and Fig.13 As shown, a limiting groove 42 is arranged on the top surface of the filter fixing platform 4 and around the limiting plug hole 41, and an ear plate portion 31 is adaptively arranged around the fluid inlet end of the melt filter 3 to be snap-fitted with the limiting groove 42, a third sealing rubber pad 33 is arranged on the top of the ear plate portion 31, and a fourth sealing rubber pad 34 is arranged on the bottom of the ear plate portion 31, so that when the sealing cover 2 is pressed against the top of the filter fixing platform 4, the bottom surface of the sealing cover 2 is pressed against the top of the ear plate portion 31 at the same time, and the ear plate portion 31 is also tightly pressed in the limiting groove 42, and under the action of pressure, the sealing between the sealing cover 2 and the melt filter 3 is achieved by the third sealing rubber pad 33, and the sealing between the melt filter 3 and the filter fixing platform 4 is achieved by the fourth sealing rubber pad 34.

[0029] like Figure 4 As shown, a first sealing pad 13 is provided on the top of the support platform 12. When the sealing cover 2 is pressed against the top of the filter fixing platform 4, the filter fixing platform 4 and the support platform 12 are sealed by the first sealing pad 13 under pressure.

[0030] After being sealed by the above-mentioned sealing gasket, the filter fixing platform 4 divides the filter container 1 into two spaces. The space above the filter fixing platform 4 can only retain unfiltered polyisobutylene, and the unfiltered polyisobutylene can only enter the space below the filter fixing platform 4 after being filtered by the melt filter 3, and be discharged from the filter container 1 through the filter outlet 11.

[0031] It should be noted that in this embodiment, the sealing cover 2 is fixed at the container mouth of the filter container 1 by means of the locking head 6. Therefore, when the sealing cover 2 is not pressed, that is, when all the sealing pads are not deformed, the top surface height of the sealing cover 2 is higher than the bottom surface height of the locking head 6. After the sealing cover 2 is pressed by rotating the locking head 6, the sealing cover 2 presses all the sealing pads downward and compresses all the sealing pads. The compression amount should be within the normal deformation scale of the sealing pads to ensure that the sealing pads will not be damaged due to excessive pressure, nor will the sealing performance be reduced due to insufficient pressure. Therefore, the thickness of all the sealing pads should be adaptively designed according to the superimposed thickness of the filter fixing platform 4 and the sealing cover 2, and with reference to the height from the top surface of the support platform 12 to the container mouth of the filter container 1, to ensure a good sealing effect.

[0032] As a specific implementation method, Figure 1 , Figure 2 , Fig.15 and Fig.16 As shown, a plurality of hinged seats 14 are arranged around the container opening of the filter container 1, a rotating shaft 62 hingedly matched with the hinged seat 14 is arranged at the bottom of the lock head 6, and a handle 61 is arranged at the top of the lock head 6. The lock head 6 is rotated by rotating the handle 61, so as to facilitate the adjustment of the position of the lock head 6.

[0033] Specifically, in this embodiment, a chamfered portion 63 is provided at the side edge of the bottom surface of the lock head 6. The chamfering size of the chamfered portion 63 is adaptively designed according to the specific size that the top surface height of the sealing cover 2 is higher than the bottom surface height of the lock head 6 when the sealing cover 2 is not pressed. The height of the chamfer is at least greater than the height of the sealing cover 2 above the bottom surface of the lock head 6 when the sealing cover 2 is not pressed. For ease of understanding, the chamfering height of the chamfered portion 63 is H1, and the height of the top surface height of the sealing cover 2 is higher than the bottom surface height of the lock head 6 when the sealing cover 2 is not pressed. At this time, H1 is greater than H2. The purpose of such a design is that when the sealing cover 2 is not pressed, the top surface of the sealing cover 2 is located within the vertical range of the chamfered portion 63 of the lock head 6, ensuring that when the lock head 6 is rotated, the sealing cover 2 will not interfere with the rotation of the lock head 6 due to the height difference, and ensuring that the lock head 6 can be smoothly and fluently rotated and pressed on the top of the sealing cover 2.

[0034] Specifically in this embodiment, a linkage assembly is provided between the plurality of lock heads 6 so that when one lock head 6 is driven to rotate, all other lock heads 6 rotate synchronously.

[0035] As a specific implementation method, Figure 2 As shown, the linkage assembly includes a sprocket 7 which is coaxially arranged with the hinge axis of the lock head 6 and fixed with the lock head 6, and the sprockets 7 corresponding to each of the lock heads 6 are connected by a chain 8. In this way, when one of the lock heads 6 is rotated, the lock head 6 drives the corresponding sprocket 7 to rotate, and when the sprocket 7 rotates, it drives other corresponding sprockets 7 to rotate synchronously through the chain 8, and other sprockets 7 drive their corresponding lock heads 6 to rotate at the same time, and finally form the effect of synchronous rotation of all the lock heads 6. There are two advantages of this design: first, the rotation of all the lock heads 6 can be realized quickly, and the disassembly and assembly efficiency of the sealing cover 2 is improved; second, all the lock heads 6 rotate synchronously at the same time, so that the sealing cover 2 is uniformly stressed when being pressed, ensuring that the sealing cover 2 is stably stressed to press the melt filter 3 and the filter fixing platform 4 downward, and preventing the uneven stress when the lock heads 6 are rotated one by one to press the sealing cover 2, resulting in the occurrence of the sealing cover tilting.

[0036] Specifically, in this embodiment, the sprocket 7 is coaxially fixed with the rotating shaft 62 and connected by welding or shaft keys. The above connection method belongs to the existing conventional technology and will not be described in detail.

[0037] Furthermore, if Figure 1and Figure 2 As shown, a protective cover 15 for protecting the chain 8 is provided on the outer side of the filter container 1 , thereby improving the operational safety of the filter container 1 .

[0038] Preferably, in order to improve the filtering efficiency of polyisobutylene, a plurality of melt filters 3 are provided and are evenly arranged on the filter fixing platform 4 .

[0039] Furthermore, if Figures 5 to 7 As shown, in order to improve the uniformity of polyisobutylene flow, the sealing cover 2 is hollow, and the filter inlet includes a first filter inlet 21 arranged at the top of the sealing cover 2, and also includes a plurality of second filter inlets 22 arranged at the bottom of the sealing cover 2 corresponding to the melt filter 3. Polyisobutylene first enters the sealing cover 2 from the first filter inlet 21, and then flows evenly into the corresponding melt filter 3 from the plurality of second filter inlets 22.

[0040] As an adaptive design, a slightly raised boss portion 25 is provided around the outer side of the second filter inlet 22, and the boss portion 25 contacts the corresponding third sealing pad 33 to isolate multiple melt filters 3 and ensure the sealing between the sealing cover 2 and the corresponding melt filter 3.

[0041] Furthermore, if Figure 7 As shown, the sealing cover 2 is provided with reinforcing ribs 23 inside, and the reinforcing ribs 23 are used to support the upper and lower ends inside the sealing cover 2 to increase the force-bearing strength of the sealing cover 2.

[0042] Furthermore, if Fig.10 , Fig.11 , Fig.12 and Fig.14 As shown, a limiting plug 32 is provided at the tail end of the melt filter 3 (the end of the melt filter 3 away from the fluid inlet is the tail end), and a plurality of limiting plugs 32 corresponding to the tail ends of the melt filters 3 are transitionally connected through a retainer 5. Specifically, the retainer 5 is configured as a disc-shaped structure, and the retainer 5 is provided with retainer plug holes 51 corresponding to the limiting plugs 32 one by one. The melt filter 3 is plugged into the corresponding limiting plug 32 through the limiting plug 32, and the plurality of melt filters 3 are connected through the retainer 5, thereby improving the overall setting stability of the plurality of melt filters 3.

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A polyisobutylene filtering device, characterized in that: Comprising a filter container (1) and a sealing cover (2) for sealing the filter container (1), the sealing cover (2) being provided with a filter inlet, the filter container (1) being provided with a filter outlet (11), a filter fixing platform (4) being provided in the filter container (1), and a melt filter (3) being plugged into the filter fixing platform (4); The melt filter (3) is pressed onto the filter fixing platform (4) via a sealing cover (2); a plurality of locks (6) are hingedly connected around the container opening of the filter container (1) for pressing the sealing cover (2); It also comprises a sprocket (7) fixedly connected to the lock head (6), the sprocket (7) being coaxially arranged with the hinge axis of the lock head (6), and a plurality of the sprockets (7) being cooperatively connected via a chain (8).

2. A polyisobutylene filtering device according to claim 1, characterized in that: A support platform (12) for supporting the filter fixing platform (4) is provided on the inner wall of the filter container (1), and a limiting plug hole (41) for plugging the melt filter (3) is provided on the filter fixing platform (4).

3. A polyisobutylene filtering device according to claim 2, characterized in that: Sealing rubber pads are provided between the sealing cover (2) and the filter fixing platform (4), between the sealing cover (2) and the melt filter (3), between the melt filter (3) and the filter fixing platform (4), and between the filter fixing platform (4) and the support platform (12).

4. A polyisobutylene filtering device according to claim 3, characterized in that: A limiting groove (42) is provided on the top surface of the filter fixing platform (4) and around the limiting insertion hole (41), and an ear plate portion (31) that is snap-fitted with the limiting groove (42) is provided at the fluid inlet end of the melt filter (3).

5. A polyisobutylene filtering device according to claim 1, characterized in that: A plurality of hinged seats (14) are arranged around the container opening of the filter container (1), a rotating shaft (62) hingedly matched with the hinged seats (14) is arranged at the bottom of the lock head (6), and a handle (61) is arranged at the top of the lock head (6).

6. A polyisobutylene filtering device according to claim 1, characterized in that: A chamfered portion (63) is provided on the side edge of the bottom surface of the lock head (6).

7. A polyisobutylene filtering device according to claim 1, characterized in that: A protective cover (15) for protecting the chain (8) is provided on the outside of the filter container (1).

8. The polyisobutylene filtering device according to claim 1, characterized in that: The melt filters (3) are arranged in plurality and are evenly arranged on the filter fixing platform (4); the sealing cover (2) is arranged hollow; the filter inlet comprises a first filter inlet (21) arranged at the top of the sealing cover (2); and further comprises a plurality of second filter inlets (22) arranged at the bottom of the sealing cover (2) and corresponding one to one with the melt filters (3).

9. A polyisobutylene filtering device according to claim 8, characterized in that: A limiting plug (32) is provided at the tail end of the melt filter (3), and a plurality of limiting plugs (32) corresponding to the tail ends of the melt filters (3) are transitionally connected via a retaining frame (5).

Images