CN217951264U

CN217951264U - One-way valve flow channel for online recovery of non-woven fabrics

Info

Publication number: CN217951264U
Application number: CN202222081238.4U
Authority: CN
Inventors: 曹恩; 董康伦; 乐建军
Original assignee: Zhejiang Jinhu Plastic Machine Co ltd
Current assignee: Zhejiang Jinhu Plastic Machine Co ltd
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2022-12-02
Anticipated expiration: 2032-08-08

Abstract

The utility model provides a check valve runner that is used for online recovery of non-woven fabrics which characterized in that: the non-woven fabric on-line recycling extruder comprises a front flow channel, a rear flow channel and a valve core, wherein the front flow channel is funnel-shaped, the front flow channel is fixed at the position of an extrusion port of a non-woven fabric on-line recycling extruder screw through a flange, the rear flow channel is cylindrical and coaxially arranged at the rear end of the front flow channel, the rear flow channel is connected with a filling port of a non-woven fabric main extruder, the valve core is arranged in inner holes of the front flow channel and the rear flow channel, so that materials can flow towards the rear flow channel in a one-way mode, the front end and the rear end of the valve core are conical, and mixing teeth are convexly arranged on the outer peripheral surface of the valve core. The utility model discloses knot list reasonable in design, processing convenience can play the effect of check valve, carry out static mixing effect to the material simultaneously, ensure that the material flows fast, difficult jam.

Description

One-way valve flow channel for online recovery of non-woven fabrics

Technical Field

The utility model belongs to the technical field of macromolecular material processing machinery, a runner structure of extruder is related to, concretely relates to check valve runner that is used for the online recovery of non-woven fabrics.

Background

The extruder is used for fully mixing and extruding various particle raw materials and outputting the raw materials, and is mainly used in the field of plastic or rubber manufacturing. When in use, the extruder heats the raw materials to be viscous flow, the raw materials pass through a neck mold with a certain shape under the condition of pressurization to form a continuous body with a cross section similar to the shape of the neck mold, then the continuous body is cooled to change the raw materials with a certain geometric shape and size from viscous flow state to high elastic state, and finally the raw materials are cooled and shaped to glass state to obtain the required product.

The screw is an important part of the plastic extruder and directly influences the final finished product shaping. In the production process of the non-woven fabric, a large amount of waste edges and waste silk are generated. The existing method is to directly melt and extrude the waste edges and the waste silk into a main non-woven fabric extruder again for secondary non-woven fabric production, so that the labor and the energy consumption are saved. The non-woven fabrics retrieves the fuse-element pipeline that links to each other between extruder and the non-woven fabrics owner extruder on line and need install the check valve for when retrieving the extruder and do not use for a long time and shut down the maintenance for the short time, non-woven fabrics owner extruder can normal use, can not make the material from retrieving the extruder and turn over the play and cause the waste, influence owner extruder production.

The conventional check valve core adopts the steel ball, but the steel ball can cause the material flow to become slow, the surface is easy to form carbon, the pressure of the non-woven fabric online recovery extruder head is high, and the yield is influenced.

Disclosure of Invention

The utility model aims to solve the technical problem that a structural design is reasonable, the unobstructed check valve runner that is used for the online recovery of non-woven fabrics of material flow is provided to foretell technical current situation, both can play the effect of check valve, can carry out static mixing effect to the material simultaneously again.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a check valve runner that is used for online recovery of non-woven fabrics which characterized in that: the non-woven fabric recycling extruder comprises a front flow channel, a rear flow channel and a valve core, wherein the front flow channel is funnel-shaped, the front flow channel is fixed at the position of an extrusion port of a non-woven fabric on-line recycling extruder screw through a flange, the rear flow channel is cylindrical and coaxially arranged at the rear end of the front flow channel, the rear flow channel is connected with a filling port of a non-woven fabric main extruder, the valve core is arranged in inner holes of the front flow channel and the rear flow channel so that materials can only flow towards the rear flow channel in a one-way manner, the front end and the rear end of the valve core are conical, and mixing teeth are convexly arranged on the outer peripheral surface of the valve core.

As an improvement, the diameters of inner holes of the front flow passage and the rear flow passage are the same, one section of the inner hole of the rear flow passage, which is close to the front flow passage, is an expanding hole for the valve core to be placed in and move back and forth, the expanding hole and the inner hole of the rear section of the rear flow passage are in conical transition, when the non-woven fabric on-line recycling extruder works normally, the raw material pushes the valve core to the rear flow passage, the mixing teeth on the valve core are blocked by the conical transition hole of the rear flow passage, and the material flows out from a gap and is led to the non-woven fabric main extruder; when the non-woven fabric on-line recycling extruder stops working, the valve core is pushed to the front flow channel by the materials returned by the non-woven fabric main extruder, and the valve core and the front flow channel are sealed.

Furthermore, the diameter d1 of the front end cone of the valve core is larger than the bottom diameter d2 of the part of the valve core processed with the mixing teeth, the diameter of the rear end cone of the valve core is the same as the bottom diameter d2, and a cone surface which is abutted against the front end cone of the valve core is formed at the opening of the rear end of the front flow channel.

Furthermore, the mixing gear teeth on the valve core are two rows of diamond mixing teeth at the front and the back, and four mixing teeth at each row are staggered at the front and the back.

Furthermore, the flow area of the valve core, namely the ring area of the front end taper diameter d1 and the mixing tooth outer diameter d3, is more than or equal to the area of the inner holes of the front and the rear flow passages.

And finally, a circular flange connected with the front runner is formed at the front end of the rear runner and fixed with the front runner through bolts, and a heating ring is coated outside the rear runner.

Compared with the prior art, the utility model has the advantages of: the mixing device is provided with a front runner, a rear runner and a valve core, wherein the peripheral surface of the valve core is convexly provided with mixing teeth, so that the mixing device not only plays a role of a one-way valve, but also plays a role of mixing and dispersing; the front end and the rear end of the valve core are conical, so that dead angles are eliminated, the resistance of a flow passage is reduced, and the materials are prevented from staying and carbonizing. The utility model has reasonable design, convenient processing, can play the role of a one-way valve, simultaneously performs static mixing function on the materials, ensures that the materials flow fast and are not easy to block,

drawings

Fig. 1 is a schematic structural view of the embodiment of the present invention in an open state of the check valve;

fig. 2 is a schematic structural view of the embodiment of the present invention in a state where the check valve is closed;

fig. 3 is a schematic structural diagram of a valve cartridge according to an embodiment of the present invention;

fig. 4 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 3.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 4, a check valve flow channel for online recycling of non-woven fabrics comprises a front flow channel 1, a rear flow channel 2 and a valve core 3, wherein the front flow channel 1 is funnel-shaped, the front flow channel is fixed at the position of an extrusion port of a screw 4 of an online recycling extruder for non-woven fabrics through a flange 5, the rear flow channel 2 is cylindrical and coaxially arranged at the rear end of the front flow channel 1, the rear flow channel 2 is connected with a filling port of a main extruder for non-woven fabrics, the valve core 3 is arranged in inner holes of the front flow channel 1 and the rear flow channel 2 so that materials can flow towards the rear flow channel in one direction, the front end and the rear end of the valve core 3 are conical, and mixing teeth 31 are convexly arranged on the outer peripheral surface of the valve core 3.

The concrete structure is as follows: the front end of the front flow channel 1 is sealed and involuted at the position of an extrusion port of a non-woven fabric online recovery extruder screw 4, a flange 5 is sleeved on the outer side of the front end of the front flow channel 1 and abuts against the step surface of the front flow channel 1, and the flange 5 is fixed with a machine barrel 6 through bolts; the front end of the rear runner 2 is formed with a circular flange connected with the front runner 1, the circular flange is fixed with the front runner 1 through bolts, and the outside of the rear runner 2 is wrapped with a heating ring 7. The diameters D of the inner holes 11 and 12 of the front flow passage 1 and the rear flow passage 2 are the same, and no additional resistance is caused to materials. One section of the inner hole 21 of the rear flow passage 2 close to the front flow passage 1 is an expanding hole 22 for the valve core 3 to be placed and move back and forth, and the expanding hole 22 and the inner hole 21 of the rear section of the rear flow passage 2 are in conical transition. In order to reduce the material flow resistance and prevent the material from staying and carbon deposition, the diameter d1 of the front end cone of the valve core 3 is larger than the bottom diameter d2 of the part of the valve core 3 processed with the mixing teeth 31, the diameter of the rear end cone of the valve core 3 is the same as the bottom diameter d2, and a conical surface which is abutted against the front end cone of the valve core 3 is formed at the opening of the rear end of the front flow channel 1. The mixing gear teeth 31 on the valve core 3 are two rows of diamond mixing teeth in the front and back, and four mixing teeth 31 in each row are staggered in the front and back. The mixing teeth 31 can fix the valve core 3 and can mix and disperse materials. The materials are divided into four by the mixing teeth 31 and then divided into four by the mixing teeth, which is beneficial to the dispersion of colors or additives and plays a role of static mixing, and the rhombic mixing teeth have no dead angle and are staggered front and back, thus the materials can not stay. In order to further reduce the flow channel resistance, the flow area of the valve body 3, that is, the area of the ring of the front end taper diameter D1 and the outer diameter D3 of the kneading teeth 31 is not less than the area of the inner hole diameter D of the front flow channel 1 and the rear flow channel 2.

When the non-woven fabric on-line recycling extruder works normally, the raw materials push the valve core 3 to the rear flow channel 2, the mixing teeth 31 on the valve core 3 are blocked by the conical transition holes of the rear flow channel 2, and materials flow out of the gap and lead to the non-woven fabric main extruder; when the non-woven fabric on-line recycling extruder stops working, the valve core 3 is pushed to the front flow channel 1 by the materials returned by the non-woven fabric main extruder, the valve core 3 and the front flow channel 1 are sealed due to the large conical diameter of the front end of the valve core 3, and the materials cannot flow to the non-woven fabric on-line recycling extruder due to pressure difference.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and embellishments can be made without departing from the technical principle of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a check valve runner that is used for online recovery of non-woven fabrics which characterized in that: the non-woven fabric recycling extruder comprises a front flow channel, a rear flow channel and a valve core, wherein the front flow channel is funnel-shaped, the front flow channel is fixed at the position of an extrusion port of a non-woven fabric on-line recycling extruder screw through a flange, the rear flow channel is cylindrical and coaxially arranged at the rear end of the front flow channel, the rear flow channel is connected with a filling port of a non-woven fabric main extruder, the valve core is arranged in inner holes of the front flow channel and the rear flow channel so that materials can only flow towards the rear flow channel in a one-way manner, the front end and the rear end of the valve core are conical, and mixing teeth are convexly arranged on the outer peripheral surface of the valve core.

2. The check valve flow passage of claim 1, wherein: the diameters of the inner holes of the front flow passage and the rear flow passage are the same, one section of the inner hole of the rear flow passage, which is close to the front flow passage, is an expanding hole for the valve core to be placed in and move back and forth, the expanding hole and the inner hole of the rear section of the rear flow passage are in conical transition, when the non-woven fabric on-line recycling extruder normally works, the valve core is pushed to the rear flow passage by the raw materials, the mixing teeth on the valve core are blocked by the conical transition hole of the rear flow passage, and the materials flow out of the gap and are led to the non-woven fabric main extruder; when the non-woven fabric on-line recycling extruder stops working, the valve core is pushed to the front flow channel by the materials returned by the non-woven fabric main extruder, and the valve core and the front flow channel are sealed.

3. The check valve flow channel of claim 2, wherein: the diameter d1 of the front end cone of the valve core is larger than the bottom diameter d2 of the part of the valve core processed with the mixing teeth, the diameter of the rear end cone of the valve core is the same as the bottom diameter d2, and a conical surface which is abutted against the front end cone of the valve core is formed at the opening of the rear end of the front flow channel.

4. The check valve flow channel of claim 3, wherein: the mixing gear teeth on the valve core are two rows of diamond mixing teeth in the front and back, and four mixing teeth in each row are staggered in the front and back.

5. The check valve flow passage of claim 4, wherein: the flow area of the valve core, namely the annular area of the front end taper diameter d1 and the mixing tooth outer diameter d3, is more than or equal to the area of the inner holes of the front and the rear flow passages.

6. The check valve flow passage of any one of claims 1 to 5, wherein: the front end of the rear runner is formed with a circular flange connected with the front runner, the circular flange is fixed with the front runner through bolts, and a heating ring is coated outside the rear runner.