Tail gas collecting device of plastic extruder

Abstract

The utility model relates to a tail gas collecting device of a plastic extruder. The tail gas collecting device consists of a universal positioning bamboo joint pipe and a tail gas cover, the tail gas cover is composed of a cover shell and a sleeving head arranged at the upper end of the cover shell, the sleeving head is connected to the outer portion of the lower end of the universal positioning bamboo joint pipe in a sleeving mode, and a fixing device used for fixing the universal positioning bamboo joint pipe and the tail gas cover is arranged on the outer side of the sleeving head. The fixing device is composed of a clamping mechanism capable of rotating up and down and a limiting clamping column matched with the clamping mechanism in a clamping mode, and the limiting clamping column is fixedly installed at an exhaust port of the plastic extruder. According to the tail gas collecting device of the plastic extruder, the tail gas cover can be adjusted at any angle and position, use is flexible, the fixing device is matched with the limiting clamping column to fix the position of the covered tail gas cover, and the tail gas cover is prevented from being ejected off by tail gas pressure; in addition, the rubber air bag can guarantee stability and sealing performance of connection between the tail gas cover and the exhaust port of the extruder, tail gas leakage is avoided, and environment quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plastic extruder processing especially relates to a plastic extruder tail gas collecting device. BACKGROUND

[0002] The host of plastic extruder is extruder, it is composed of extrusion system, transmission system and heating cooling system;Wherein the extrusion system includes screw, cylinder, hopper, machine head and mould, the cylinder cooperates with screw, realizes the pulverization, softening, melting, plasticizing, exhaust and compaction to plastic, and the rubber material is continuously and uniformly conveyed to the forming system, and the plastic is plasticized into uniform melt through the extrusion system, and is continuously extruded to the machine head under the pressure established in the process;The plastic in the extruder generates gas in the melting and plasticizing process, the gas smells pungent, is not friendly to the environment, and has certain harm to human body in the air, therefore, in order to make the gas generated in the melting and plasticizing of plastic in the extruder be able to be purified when discharging, usually installs gas collecting and purifying device at the exhaust port of extruder, and the gas is conveyed to the filter purification in the purifying device;The gas collecting and purifying device is provided with an air inlet pipe on the air inlet, and the end of the air inlet pipe is fixed with a tail gas cover that can be covered on the exhaust port of the extruder, during use, the air inlet pipe is moved, and the tail gas cover is covered on the exhaust port of the extruder, in order to ensure the precision of the butt joint between the tail gas cover and the exhaust port of the extruder, usually, the air inlet pipe is designed and customized reasonably according to the installation position of the extruder and the gas collecting and purifying device, so that the air inlet pipe can be moved, the tail gas cover and the exhaust port of the extruder can be butt jointed and separated, and the maintenance is facilitated.

[0003] However, the tail gas collecting cover carried by the air inlet pipe is fixed in position, one tail gas cover corresponds to one fixed exhaust port of the extruder, and for the extruder processing workshop with multiple groups of parallel arrangement, the tail gas cover cannot be flexibly applied, and after the tail gas cover and the exhaust port of the extruder are butt jointed, the sealing property is not good, and gas can easily seep from the joint of the two, which endangers the air environment. SUMMARY

[0004] The utility model provides a kind of plastic extruder tail gas collecting device, which is flexible to use, can change the position of tail gas cover at any time, and ensures good connection stability.

[0005] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0006] A plastic extruder tail gas collecting device is composed of a universal positioning burl pipe and a tail gas cover fixedly connected to the tail end of the universal positioning burl pipe; the tail gas cover is composed of a cover shell and a socket joint arranged at the upper end of the cover shell, the socket joint is sleeved on the outer end of the lower end of the universal positioning burl pipe, the outer side of the socket joint is provided with a fixing device for fixing the positions of the universal positioning burl pipe and the tail gas cover, the fixing device is composed of a clamping mechanism capable of rotating up and down and a limiting clamping column clamped with the clamping mechanism, and the limiting clamping column is fixedly installed at the exhaust port of the plastic extruder.

[0007] Further, the clamping mechanism comprises a base, the base is in a plate structure, one corner at the tail end of the base is movably connected with the socket joint through a pin shaft; an arc-shaped guide groove in communication between front and back is arranged on the side surface of the base, a limiting stud is embedded in the arc-shaped guide groove, and the limiting stud is fixedly installed on the socket joint; a clamping arm integrally formed with the base is arranged at the end of the base away from the pin shaft, an opening downward clamping hole is arranged at the bottom of the clamping arm close to the front end, and the clamping hole is capable of being clamped with the limiting clamping column installed at the exhaust port of the plastic extruder.

[0008] Further, the end of the limiting stud extends to the outside of the arc-shaped guide groove, a butterfly nut threadedly matched with the limiting stud is arranged on the limiting stud, and the butterfly nut is rotated to fix the position of the base on the socket joint.

[0009] Further, the outer part of the limiting clamping column is provided with a clamping groove matched with the clamping hole, and one end of the limiting clamping column is provided with a threaded fixing part threadedly connected with the exhaust port of the plastic extruder.

[0010] Further, the cross section of the cover shell is in an "eight" shape structure, and a ring-shaped rubber air bag is fixed to the inner side of the cover shell, a gas nozzle is arranged on the rubber air bag, and the gas nozzle penetrates through the cover shell and extends to the outside of the cover shell.

[0011] Further, the rubber air bag has multiple groups arranged in parallel.

[0012] Further, the upper end of the cover shell is fixedly welded with the lower end of the socket joint in communication, and the socket joint and the universal positioning burl pipe are fixedly connected together through bolts.

[0013] Further, a handle is arranged on the outer side of the cover shell.

[0014] Compared with the prior art, the plastic extruder tail gas collecting device has the advantages that the universal positioning bamboo joint pipe is connected with the tail gas cover, the tail gas cover can be adjusted at any angle position, is flexible to use, the fixing device arranged on the tail gas cover and capable of rotating up and down cooperates with the limiting clamping column arranged at the exhaust port of the extruder to fix the position of the tail gas cover after covering, avoids being pushed off by the tail gas pressure, the inflatable rubber air bag arranged in the cover shell can wrap the exhaust port of the extruder, ensures the stability and sealing performance of the connection between the tail gas cover and the exhaust port of the extruder, avoids tail gas leakage, and ensures the environmental quality. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0016] Figure 1 is a front perspective structural schematic view of the plastic extruder tail gas collecting device of the present application;

[0017] Figure 2 is a bottom perspective structural schematic view of the plastic extruder tail gas collecting device of the present application;

[0018] Figure 3 is a front structural schematic view of the plastic extruder tail gas collecting device of the present application;

[0019] Figure 4 is Figure 3 is a structural sectional view of A-A in the plastic extruder tail gas collecting device of the present application;

[0020] Figure 5 is a structural schematic view of the fixing device in the plastic extruder tail gas collecting device of the present application.

[0021] In the drawings: 1, universal positioning bamboo joint pipe; 2, tail gas cover; 21, cover shell; 22, sleeve joint; 23, handle; 3, fixing device; 31, base; 311, arc-shaped guide groove; 32, clamping groove; 321, clamping opening; 33, pin shaft; 34, limiting stud; 35, butterfly nut; 36, limiting clamping column; 361, clamping groove; 362, threaded fixing part; 4, air nozzle; 5, rubber air bag. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application. It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the embodiments of the present application, it should be explained that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0024] In addition, if the terms "horizontal", "vertical" and the like appear, they do not mean that the component must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure or component must be completely horizontal, but can be slightly inclined.

[0025] In the description of the embodiments of the present application, "a plurality of" represents at least 2.

[0026] In the description of the embodiments of the present application, it should also be explained that, unless otherwise explicitly specified and limited, if the terms "set", "mount", "connected", "connected" appear, they should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Embodiment

[0028] Please refer to the drawings of the specification Figures 1-4 The drawings of the specification Figures 1-4 The plastic extruder tail gas collecting device is composed of a universal positioning bamboo joint pipe 1 and a tail gas cover 2 fixedly connected at the tail end of the universal positioning bamboo joint pipe 1; the tail gas cover 2 is used for sleeving on the exhaust port of the extruder and is composed of a cover shell 21 and a sleeve joint 22 arranged at the upper end of the cover shell 21; the upper end of the cover shell 21 and the lower end of the sleeve joint 22 are fixedly welded together and are in communication with each other; the sleeve joint 22 is sleeved on the lower end of the universal positioning bamboo joint pipe 1, the shape of the mouth of the sleeve joint 22 is consistent with the structure of the lower end of the universal positioning bamboo joint pipe 1, and the sleeve joint 22 is fixedly connected with the universal positioning bamboo joint pipe 1 through screws after being sleeved on the universal positioning bamboo joint pipe 1; the screws are T-shaped screws; it should be noted that the side surface of the sleeve joint 22 is provided with at least three fixed holes in communication with the inside and the outside, the three fixed holes are on the same horizontal plane and are arranged in a circular array with the center of the end surface of the sleeve joint 22 as the center, the fixed holes are used for screwing, the side surface of the universal positioning bamboo joint pipe 1 close to the lower end is provided with screw thread connection holes corresponding in number and position to the fixed holes of the sleeve joint 22, the corresponding screw thread connection holes and the fixed holes are fixedly connected together through screws, a sealing ring is arranged between the sleeve joint 22 and the universal positioning bamboo joint pipe 1 in order to ensure sealing, the sealing ring is arranged between the sleeve joint 22 and the universal positioning bamboo joint pipe 1 which are sleeved together, and a sealing washer is sleeved on the screw connecting the sleeve joint 22 and the universal positioning bamboo joint pipe 1, the sealing washer can be extruded to the outside of the fixed hole after the screw is tightened, so that sealing is realized and gas leakage is prevented; in order to facilitate butt joint with the exhaust port of the extruder and better absorption of gas, refer to the drawings of the specification Figure 3 and 4As shown, the shell 21 is in the shape of an "eight" and can be sleeved on the exhaust port of the extruder. A handle 23 is fixed on the outer side of the shell 21 to facilitate manual operation of the tail gas cover 2. The inner side of the shell 21 is fixed with a ring-shaped rubber air bag 5. The rubber air bag 5 is in the shape of a ring and is fixed around the inner side of the shell 21. A gas nozzle 4 is arranged on the rubber air bag 5 to facilitate inflation and deflation. The gas nozzle 4 penetrates the shell 21 and extends outside the shell 21. The rubber air bag 5 can be inflated or deflated through the gas nozzle 4. After the shell 21 is connected to the exhaust port of the extruder, the rubber air bag 5 is sleeved on the exhaust port of the extruder. The rubber air bag 5 is inflated through the gas nozzle 4 to wrap the exhaust port of the extruder, thereby ensuring the sealing effect after the connection. The rubber air bag 5 has multiple groups arranged in parallel. Figures 1 to 3 As shown, the outer side of the sleeve joint 22 is provided with a fixing device 3 for fixing the positions of the universal positioning bamboo joint pipe 1 and the tail gas cover 2. The fixing device 3 is composed of a clamping mechanism capable of rotating up and down and a limiting clamping column 36 matched with the clamping mechanism. The limiting clamping column 36 is fixedly installed at the exhaust port of the plastic extruder. Refer to the accompanying drawings Figure 5 As shown, the outer side of the limiting clamping column 36 is provided with a clamping groove 361. One end of the limiting clamping column 36 is provided with a threaded fixing part 362 threadedly connected with the exhaust port of the plastic extruder. The threaded fixing part 362 is in an integral structure with the limiting clamping column 36. The exhaust port of the plastic extruder is provided with a threaded hole for screwing the threaded fixing part 362. The limiting clamping column 36 is screwed on the threaded hole through the threaded fixing part 362. Figure 5As shown, the clamping mechanism comprises a base 31 in the form of a plate structure, one corner of the end of which is movably connected with the sleeve joint 22 by a pin shaft 33, and the base 31 can rotate relative to the sleeve joint 22 by the pin shaft 33; an arc-shaped guide groove 311 is arranged on the side surface of the base 31 and communicates between front and back, and the arc-shaped guide groove 311 is arranged in an arc shape from the lower end of the front end of the base 31 to the upper end of the back end, and a limiting stud 34 is embedded in the arc-shaped guide groove 311, and the limiting stud 34 is fixedly installed on the sleeve joint 22, and when the base 31 is rotated, the arc-shaped guide groove 311 can move along the limiting stud 34, and the limiting stud 34 also plays a role of constraint and guidance for the arc-shaped guide groove 311, in order to fix the position of the base 31 in real time, the end of the limiting stud 34 extends outside the arc-shaped guide groove 311, and a wing nut 35 threadedly matched with the limiting stud 34 is arranged on the part of the limiting stud 34 outside the arc-shaped guide groove 311, and manual rotation of the wing nut 35 can clamp the base 31 on the sleeve joint 22, and fix the position of the base 31 on the sleeve joint 22; a clamping arm 32 integrally formed with the base 31 is arranged at the end of the base 31 away from the pin shaft 33, the clamping arm 32 is bent outwardly and extends forward, and an opening downward clamping hole 321 is arranged at the bottom of the part close to the front end of the clamping arm 32, the clamping hole 321 can be up and down clamped with a clamping groove 361 on a limiting clamping column 36 installed at the exhaust port of the plastic extruder, the clamping arm 32 is clamped on the limiting clamping column 36 through the clamping hole 321, the position of the tail gas cover 2 on the exhaust port of the extruder is fixed, and then the position of the universal positioning bellow pipe 1 is limited, and upward rotation of the clamping arm 32 can separate it from the limiting clamping column 36, so as to conveniently loosen the tail gas cover 2 and the exhaust port of the extruder.

[0029] The plastic extruder tail gas collecting device can realize adjustment of the tail gas cover 2 at any angle position through the universal positioning bellow pipe 1, the fixed device 3 arranged on the tail gas cover 2 and rotatable up and down can realize position fixation of the tail gas cover 2 after covering, and avoids being separated by the tail gas pressure; in addition, the inflatable rubber air bag 5 arranged in the cover shell 21 can wrap the exhaust port of the extruder, ensures the stability and sealing property of the connection between the tail gas cover and the exhaust port of the extruder, avoids tail gas leakage, and ensures the environmental quality.

[0030] It should be emphasized that: the above is only a preferred embodiment of the present application, and is not used to limit the present application, for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for collecting exhaust gas from a plastic extruder, characterized in that: It consists of a universal positioning bamboo tube (1) and an exhaust hood (2) fixedly connected to the end of the universal positioning bamboo tube (1); the exhaust hood (2) consists of a cover (21) and a sleeve (22) set on the upper end of the cover (21). The sleeve (22) is sleeved on the lower end of the universal positioning bamboo tube (1). A fixing device (3) for fixing the position of the universal positioning bamboo tube (1) and the exhaust hood (2) is provided on the outside of the sleeve (22). The fixing device (3) consists of a snap-fit ​​mechanism that can rotate up and down and a limiting snap-fit ​​post (36) that snaps into the snap-fit ​​mechanism. The limiting snap-fit ​​post (36) is fixedly installed at the exhaust port of the plastic extruder.

2. The exhaust gas collection device for a plastic extruder according to claim 1, characterized in that: The locking mechanism includes a base (31), which is a plate-like structure. One corner of its end is movably connected to the socket (22) via a pin (33). The side of the base (31) is provided with an arc-shaped guide groove (311) that is connected front and back. A limiting stud (34) is embedded in the arc-shaped guide groove (311). The limiting stud (34) is fixedly installed on the socket (22). The end of the base (31) away from the pin (33) is provided with a locking arm (32) integrally formed therewith. The bottom of the locking arm (32) near the front end is provided with a downward-opening locking slot (321). The locking slot (321) can engage with the limiting locking stud (36) installed at the exhaust port of the plastic extruder.

3. The exhaust gas collection device for a plastic extruder according to claim 2, characterized in that: The end of the limiting stud (34) extends to the outside of the arc-shaped guide groove (311). The limiting stud (34) is provided with a wing nut (35) that is threaded to it. Rotating the wing nut (35) fixes the position of the base (31) on the socket (22).

4. The exhaust gas collection device for a plastic extruder according to claim 2, characterized in that: The limiting pin (36) is provided with a groove (361) that cooperates with the jaw (321) on the outside, and a threaded fixing part (362) is provided at one end of the limiting pin (36) that is threaded to the exhaust port of the plastic extruder.

5. The exhaust gas collection device for a plastic extruder according to claim 1, characterized in that: The cover (21) has a cross-section in the shape of an "eight" and an annular rubber airbag (5) is fixed on its inner side. An air nozzle (4) is provided on the rubber airbag (5). The air nozzle (4) penetrates the cover (21) and extends to the outside of the cover (21).

6. The exhaust gas collection device for a plastic extruder according to claim 5, characterized in that: The rubber airbags (5) are arranged in multiple groups, one above the other.

7. The exhaust gas collection device for a plastic extruder according to claim 1, characterized in that: The upper end of the cover (21) is welded to the lower end of the sleeve (22), and the upper and lower parts are connected. The sleeve (22) and the universal positioning bamboo tube (1) are fixedly connected together by bolts.

8. The exhaust gas collection device for a plastic extruder according to claim 1, characterized in that: A handle (23) is provided on the outer side of the cover (21).

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