CN212147467U - Liquid discharge structure of double-screw extruder - Google Patents

Abstract

The utility model discloses a liquid drainage structure of a double-screw extruder, which comprises a barrel body and two screw elements which are mutually meshed for transmission, wherein a first accommodating cavity and a second accommodating cavity are respectively formed in the barrel body corresponding to the two screw elements, the first accommodating cavity is communicated with the second accommodating cavity, and the second accommodating cavity is provided with an opening which extends along the horizontal direction and penetrates through the barrel body; when a liquid discharging hole of the liquid discharging structure is blocked, the side liquid discharging material blocking block can be integrally detached, and the accommodating cavity is directly opened, so that the blockage in the accommodating cavity can be conveniently cleaned, the operation is simpler and more convenient, and the efficiency is higher; compare with traditional seting up the outage at the top of barrel, the outage level setting on the side flowing back striker block, when liquid pressure is not high in the barrel, when the drainage requirement is not high, liquid can flow out naturally under the action of gravity, can not need to open the vacuum pump this moment and carry out the drawing liquid to energy saving consumes.

Description

Liquid discharge structure of double-screw extruder

Technical Field

The utility model relates to a double screw extruder field, concretely relates to double screw extruder's flowing back structure.

Background

With the rapid development of rubber and plastic industries, the twin-screw extruder is more and more widely used, and various raw materials are added into the twin-screw extruder in a multi-path manner for operations such as blending, modification and the like, so that a product with excellent comprehensive performance is manufactured. Blending and modification of a plurality of materials need to be carried out in solution, and after the materials are mixed and modified, the solution needs to be discharged to extrude the materials.

In most double-screw extruders, designers often open a liquid discharge hole at the top of a cylinder of the double-screw extruder, the liquid discharge hole is connected with a vacuum pump through a pipeline, volatile components and solution are pumped out through the vacuum pump, the vacuum pump is always in a working state in a liquid discharge mode, and relatively more energy is consumed; and when solution content is great, when the material composition is more, the flowing back hole department in the above-mentioned structure and the chamber that holds of extruder all produce the jam easily, and barrel internal pressure also can rise, and the trompil design of traditional structure leads to it when blockking up, and tiny hole makes the plug difficult to be cleared up out, and the operation is also comparatively loaded down with trivial details.

Disclosure of Invention

In order to solve the problem, the utility model discloses a double screw extruder's flowing back structure.

In order to achieve the above purpose, the utility model provides a following technical scheme: a liquid discharge structure of a double-screw extruder comprises a barrel and two screw elements which are meshed with each other for transmission, wherein a first accommodating cavity and a second accommodating cavity are respectively formed in the barrel corresponding to the two screw elements, the first accommodating cavity is communicated with the second accommodating cavity, and the second accommodating cavity is provided with an opening which extends along the horizontal direction and penetrates through the barrel;

the flowing back structure still include one with opening matched with side flowing back keeps off the material piece, side flowing back keeps off the material piece and includes the mounting panel and connect in the piece that blocks of mounting panel lateral part, the mounting panel passes through bolt detachable and connects on the barrel to with the sealed cooperation of barrel, block the piece and be located in the opening, and the shutoff the one end that blocks the piece and go back to the mounting panel has the arc surface, should block the arc surface of piece stretch into extremely the second holds the intracavity, and with the second holds the chamber and constitutes a circular cavity jointly, block and still seted up a flowing back runner on the piece, this flowing back runner is the platykurtic structure, the flowing back runner with the second holds the chamber and is linked together to outside extension runs through the mounting panel.

As an improvement of the utility model, the flowing back runner is close to the one end downward sloping setting of mounting panel, the flowing back runner corresponds the second holds the bore of chamber department and is greater than the flowing back runner corresponds the bore of mounting panel department.

As an improvement of the utility model, the first chamber that holds also has an opening, flowing back structure includes two side flowing back material blocking blocks, two the side flowing back material blocking block cooperatees with the first opening that holds chamber and second and hold the chamber respectively.

As an improvement of the utility model, the mounting panel with be provided with temperature resistant seal gasket between the barrel, the mounting panel pass through temperature resistant seal gasket with the sealed cooperation of barrel.

As an improvement of the utility model, the temperature-resistant sealing gasket is a red copper gasket.

As an improvement of the present invention, the stopper is in transition fit with the opening.

Compared with the prior art, the utility model has the advantages of as follows: the accommodating cavity in the liquid drainage structure of the utility model is provided with an opening, and by arranging the side liquid drainage material blocking block matched with the opening, the arc surface of the side liquid drainage material blocking block extends into the accommodating cavity for accommodating the screw rod and forms a circular cavity together with the accommodating cavity, when a liquid drainage hole of the liquid drainage structure is blocked, the side liquid drainage material blocking block can be integrally disassembled, and the accommodating cavity is directly opened, so that the blockage in the accommodating cavity can be conveniently cleaned, the operation is simpler and more convenient, and the efficiency is higher; compare with traditional seting up the outage at the top of barrel, the outage level setting on the side flowing back striker block, when liquid pressure is not high in the barrel, when the drainage requirement is not high, liquid can flow out naturally under the action of gravity, can not need to open the vacuum pump this moment and carry out the drawing liquid to energy saving consumes.

Drawings

Fig. 1 is a schematic structural view of the cylinder of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic structural view of the lateral liquid discharge material stop block of the present invention;

FIG. 4 is a bottom cross-sectional view of FIG. 3;

fig. 5 is a left side sectional view of fig. 3.

List of reference numerals: 1. a barrel; 11. a first accommodating chamber; 12. a second accommodating chamber; 121. an opening; 2. a screw element; 3. a side liquid discharge material stop block; 31. mounting a plate; 32. A blocking block; 321. a circular arc surface; 322. and a liquid drainage flow channel.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example (b): referring to fig. 1-5, a liquid discharge structure of a twin-screw extruder comprises a barrel 1 and two screw elements 2 which are engaged with each other for transmission, wherein a first accommodating cavity 11 and a second accommodating cavity 12 are respectively formed in the barrel 1 corresponding to the two screw elements 2, the first accommodating cavity 11 and the second accommodating cavity 12 are both used for accommodating the screw elements, a gap is reserved between the screw and the first accommodating cavity 11 and the second accommodating cavity 12, when the extruder works, liquid exists in the gap and needs to be discharged, the first accommodating cavity 11 is communicated with the second accommodating cavity 12, the second accommodating cavity 12 is provided with an opening 121, and the opening 121 extends along the horizontal direction and penetrates through the barrel 1;

the liquid discharge structure further comprises a side liquid discharge stop block 3 matched with the opening 121, the side liquid discharge stop block 3 comprises a mounting plate 31 and a stop block 32 connected to the side of the mounting plate 31, the stop block 32 and the mounting plate 31 are integrally formed into a whole, bolt holes are formed in four corners of the mounting plate 31, threaded holes are formed in the barrel 1 corresponding to the bolt holes and detachably connected with the bolt holes through bolts, a temperature-resistant sealing gasket is arranged between the mounting plate 31 and the barrel 1, and the mounting plate 31 is in sealing fit with the barrel 1 through the temperature-resistant sealing gasket;

the temperature-resistant sealing gasket is a red copper gasket which is soft and good in high temperature resistance and can be compressed by the mounting plate 31 to deform so as to play a sealing role;

the blocking block 32 is located in the opening 121 and blocks the opening 121, an arc surface 321 is arranged at one end of the blocking block 32, which is away from the mounting plate 31, the arc surface 321 of the blocking block 32 extends into the second accommodating cavity 12 and forms a circular cavity together with the second accommodating cavity 12, a liquid discharge channel 322 is further formed in the blocking block 32, the liquid discharge channel 322 is in a flat structure, and the liquid discharge channel 322 is communicated with the second accommodating cavity 12 and extends outwards to penetrate through the mounting plate 31;

when discharging liquid, the liquid in the first accommodating cavity 11 and the second accommodating cavity 12 can flow out through a liquid discharging flow channel 322 arranged on the side liquid discharging material blocking block 3, like the traditional structure, the liquid discharging flow channel 322 can also be connected to a vacuum pump through a pipeline, liquid is pumped by the vacuum pump, a three-way pipe can be connected to the pipeline, one outlet of the three-way pipe is connected with the vacuum pump, the other outlet can directly discharge liquid, when the liquid pressure in the barrel body 1 is not high, the liquid can naturally flow out under the action of gravity when the discharging requirement is not high, and at the moment, the vacuum pump does not need to be started for liquid pumping, so that the energy consumption is saved; when a liquid discharging hole of the liquid discharging structure is blocked, a connecting bolt on the mounting plate 31 of the side liquid discharging material blocking block 3 can be screwed off, the side liquid discharging material blocking block 3 is integrally disassembled, the second accommodating cavity 12 is directly opened from the opening, and the blockage in the accommodating cavity is cleaned from the opening 121, so that the operation is simpler and more convenient, and the efficiency is higher;

the flowing back runner 322 is close to the one end downward sloping setting of mounting panel 31, the slope sets up and can make liquid flow more smoothly, flowing back runner 322 is close to the one end downward sloping setting of mounting panel 31, flowing back runner 322 corresponds the bore that the second held chamber 12 department is greater than the bore that flowing back runner 322 corresponds mounting panel 31 department.

The first chamber 11 that holds also has an opening 121, flowing back structure includes two side flowing back striker 3, two side flowing back striker 3 cooperatees with the first opening 121 that holds chamber 11 and second and hold chamber 12 respectively, and through the setting of two side flowing back striker 3, the flowing back hole of two side flowing back striker 3 is the flowing back simultaneously, can improve flowing back speed and efficiency.

The stop block 32 is in transition fit with the opening 121, so that the stop block can be conveniently detached and installed.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims (6)

1. The utility model provides a double screw extruder's flowing back structure, includes barrel (1) and two driven screw element (2) of intermeshing, correspond two in barrel (1) screw element (2) have been seted up respectively first hold chamber (11) and second and have been held chamber (12), its characterized in that: the first accommodating cavity (11) is communicated with the second accommodating cavity (12), the second accommodating cavity (12) is provided with an opening (121), and the opening (121) extends along the horizontal direction and penetrates through the cylinder body (1);

the liquid discharge structure further comprises a side liquid discharge material stop block (3) matched with the opening (121), the side liquid discharge material stop block (3) comprises a mounting plate (31) and a blocking block (32) connected to the side part of the mounting plate (31), the mounting plate (31) is detachably connected to the barrel body (1) through a bolt and is in sealing fit with the barrel body (1), the blocking block (32) is located in the opening (121) and blocks the opening (121), one end, back to the mounting plate (31), of the blocking block (32) is provided with an arc surface (321), the arc surface (321) of the blocking block (32) extends into the second accommodating cavity (12) and forms a circular cavity together with the second accommodating cavity (12), the blocking block (32) is further provided with a liquid discharge flow channel (322), the liquid discharge flow channel (322) is of a flat structure, and the liquid discharge flow channel (322) is communicated with the second accommodating cavity (12), and extends outwardly through the mounting plate (31).

2. The liquid discharge structure of a twin-screw extruder as claimed in claim 1, wherein: the drainage flow channel (322) is close to one end of the mounting plate (31) and is arranged in a downward inclined mode, and the caliber of the drainage flow channel (322) corresponding to the second accommodating cavity (12) is larger than that of the drainage flow channel (322) corresponding to the mounting plate (31).

3. The liquid discharge structure of a twin-screw extruder as claimed in claim 1, wherein: the first accommodating cavity (11) is also provided with an opening (121), the liquid discharging structure comprises two side liquid discharging material blocking blocks (3), and the two side liquid discharging material blocking blocks (3) are respectively matched with the openings (121) of the first accommodating cavity (11) and the second accommodating cavity (12).

4. The liquid discharge structure of a twin-screw extruder as claimed in claim 1, wherein: a temperature-resistant sealing gasket is arranged between the mounting plate (31) and the barrel body (1), and the mounting plate (31) is in sealing fit with the barrel body (1) through the temperature-resistant sealing gasket.

5. The liquid discharge structure of a twin-screw extruder as claimed in claim 4, wherein: the temperature-resistant sealing gasket is a red copper gasket.

6. The liquid discharge structure of a twin-screw extruder as claimed in claim 1, wherein: the stop block (32) is in transition fit with the opening (121).

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