CN212533219U

CN212533219U - Screw die head for melt-blown PP discharging

Info

Publication number: CN212533219U
Application number: CN202020847529.8U
Authority: CN
Inventors: 王哲锋
Original assignee: Zhejiang Dyoung New Material Co ltd
Current assignee: Zhejiang Dyoung New Material Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-02-12
Anticipated expiration: 2030-05-20

Abstract

The utility model provides a screw die head for discharging melt-blown PP, which relates to the technical field of melt-blown PP production and is arranged above a cooling water tank, and comprises a die head body, a die hole arranged in the die head body, a screw fixing hole arranged on the outer ring of the die head body and a discharge hole communicated with the die hole; the discharge port is positioned below the die head body, and the melt-blown PP is vertically discharged from the lower part of the die head body. The utility model discloses change the die head, broken string very easily before the change, and the doubling, the long stub bar of the particle that surely goes out and the stub bar is more, and after the change, the perpendicular ejection of compact makes melt-blown PP directly get into the cooling trough, and not broken string, the doubling, output can obviously improve 30%, has improved the productivity greatly to reduce the waste material and produce, practice thrift the cost.

Description

Screw die head for melt-blown PP discharging

Technical Field

The utility model relates to a screw rod die head for melt-blown PP ejection of compact belongs to melt-blown PP preparation technical field.

Background

The melt-blown PP is discharged/extruded in a double-screw extruder, a screw die head is needed to be used for extruding the melt-blown PP, the melt-blown PP is usually in a silk-thread shape during extrusion after being continuously extruded from an extrusion hole of the die head, and then the melt-blown PP enters a water tank for cooling.

In the prior art, a screw die head for discharging melt-blown PP is shown in fig. 1, a discharge port 4' is arranged to discharge horizontally, a cooling water tank is arranged below the screw die head, and melt-blown PP threads discharged horizontally are bent under the action of gravity, so that the threads are easily broken and doubled, and the number of cut long stub bars and doubled stub bars of particles is large, thereby affecting the quality of products.

The present application was made based on this.

SUMMERY OF THE UTILITY MODEL

In order to solve the above defects existing in the prior art, the utility model provides a screw die head for melt-blowing PP ejection of compact.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a screw die head for discharging melt-blown PP (polypropylene) is arranged above a cooling water tank and comprises a die head body, a die hole formed in the die head body, a screw fixing hole formed in the outer ring of the die head body and a discharge hole communicated with the die hole; the discharge port is positioned below the die head body, and the melt-blown PP is vertically discharged from the lower part of the die head body. Vertical discharging is compared with horizontal discharging, and silk threads discharged from a discharging port can directly enter a cooling water tank, so that the silk threads are not easy to break and combine.

Further, in order to further ensure the uniformity and the continuous yarn breakage of the melt-blown PP yarns, the discharge port is over against the upper part of the water tank, and the water tank comprises a water inlet and a water outlet; a diversion baffle plate for separating the water inlet from the water outlet is arranged in the water tank, and a water inlet area and a cooling area are separated by the diversion baffle plate; the flow guide partition plate is obliquely arranged below the screw die head.

The utility model discloses a principle and beneficial technological effect: the utility model discloses change the die head, broken string very easily before the change, and the doubling, the long stub bar of the particle that surely goes out and the stub bar is more, and after the change, the perpendicular ejection of compact makes melt-blown PP directly get into the cooling trough, and not broken string, the doubling, output can obviously improve 30%, has improved the productivity greatly to reduce the waste material and produce, practice thrift the cost.

Drawings

FIG. 1 is a sectional view showing the structure of a conventional screw die;

FIG. 2 is a sectional view showing the structure of the screw die of this example;

FIG. 3 is a schematic diagram of the die and water bath configuration without baffles;

FIG. 4 is a schematic diagram of a die and water trough with added baffles.

Description of the labeling: the die head comprises a die head body 1, a die hole 2, a screw fixing hole 3, a discharge hole 4, a discharge cavity 41, a cooling water tank 5, melt-blown PP 6, a flow guide partition plate 7, a water inlet area 71, a cooling area 72, a water pipe 8, a water inlet 81, a water outlet 82 and a water flow direction a.

Detailed Description

In order to make the technical means and the technical effects achieved by the technical means of the present invention clearer and more complete, the following embodiments are provided and are described in detail with reference to the accompanying drawings as follows:

as shown in fig. 2 to 4, the screw die head for discharging the melt-blown PP of the present embodiment is installed above a cooling water tank 5, and includes a die head body 1, a die hole 2 (the die hole 2 forms a through cavity) formed in the die head body 1, a screw fixing hole 3 (for fixing the die head) formed in an outer ring of the die head body 1, and a discharge hole 4 communicated with the die hole 2; the discharge port 4 is located below the die head body 1, namely, a discharge cavity 41 communicating the discharge port with the cavity of the die hole 2 is formed by turning downwards instead of being formed horizontally, and the melt-blown PP is vertically discharged from the lower part of the die head body 1. Compared with horizontal discharging, the vertical discharging enables silk threads discharged from the discharging port 4 to directly enter the cooling water tank 5, so that the silk threads are not easy to break and merge.

The discharge port 4 is over against the water tank 5, and the water tank 5 comprises a water inlet 81 and a water outlet 82; a diversion baffle plate 7 for separating the water inlet 81 and the water outlet 82 is arranged in the water tank 5, and the water inlet area 71 and the cooling area 72 are separated by the diversion baffle plate 7; the flow guide partition plate 7 is obliquely arranged below the screw die head. The baffle 7 separates the water inlet 81 and the water outlet 82, so that water flows from the water inlet area 71 to the starting point of the baffle 7, and the water flows downwards along the inclined baffle 7, so that the extruded melt-blown PP is conveyed to the cooling area 72 for cooling along the water flow direction (the inclined direction of the baffle 7). And the increase of the energy of the diversion baffle plate 7 can reduce the height of the PP discharged material of the melt-blown, shorten the time of the PP discharged material entering the cooling water tank 5, cool the PP discharged material quickly, and simultaneously further make silk threads more uniform and more difficult to break and combine.

This embodiment has changed die head and basin 5, and the very easy broken string before the change, and the doubling, the long stub bar of the particle of cutting out and the doubling stub bar are more, and change die head and basin 5 back directly get into cooling trough 5, and the broken string is not, and the doubling is not, and output can obviously improve 30%, has improved the productivity greatly to reduce the waste material and produce, practice thrift the cost.

The above is a detailed description of the technical solutions provided in connection with the preferred embodiments of the present invention, and it should not be assumed that the embodiments of the present invention are limited to the above description, and it will be apparent to those skilled in the art that the present invention can be implemented in a variety of ways without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a screw die head for spouting spout PP ejection of compact, installs the top in the cooling trough, its characterized in that: the die head comprises a die head body, a die hole arranged in the die head body, a screw fixing hole arranged on the outer ring of the die head body and a discharge hole communicated with the die hole; the discharge port is positioned below the die head body, and the melt-blown PP is vertically discharged from the lower part of the die head body.

2. The screw die for meltblown PP discharging of claim 1 wherein: the discharge hole is over against the water tank, and the water tank comprises a water inlet and a water outlet; a diversion baffle plate for separating the water inlet from the water outlet is arranged in the water tank, and a water inlet area and a cooling area are separated by the diversion baffle plate; the flow guide partition plate is obliquely arranged below the screw die head.