CN204918854U - Filter core formula fuse -element filter - Google Patents

Abstract

The utility model relates to a filter core type melt filter, which belongs to the technical field of spinning auxiliary equipment. It consists of a lower cover, a filter element, an upper cover and an outer cylinder, the filter element is installed between the upper cover and the lower cover, the outer cylinder is set on the filter element, the lower cover is fixedly installed on the fixed plate, and the side wall of the lower cover The melt inlet is set on the top, and multiple diversion ports are set on the top, and each diversion port is connected with the melt inlet in the lower cover; the filter element is composed of a filter rod, a filter medium and a skeleton outer net; the upper cover is set above the filter element, And the upper cover is provided with a melt outlet. Applying the utility model to the continuous filtration of high polymer melt has the advantages of high filtration precision, long service life, good working stability and the like.

Description

Cartridge Melt Filter

technical field

The utility model relates to a filter core type melt filter, which belongs to the technical field of auxiliary equipment for polymer production.

Background technique

In the process of chemical fiber spinning, injection molding, bottle blowing, etc., to improve product quality and reduce defective products, improve production efficiency and reduce costs, polymer filtration is an essential step. Due to the existence of unreacted monomers, solid impurities in the raw materials, polymer gel, etc. during the polymerization reaction, and the high-speed spinning process, the diameter of the filament is small, and high-magnification stretching is required; injection molding, blowing During the bottle process, solid impurities, gel and other foreign matter affect the light transmittance of the product. Therefore, improving the purity of the polymer is one of the key factors to ensure the normal operation of the next process and the quality of the finished product.

Therefore, high-speed spinning must be equipped with a pre-filter to improve the purity of the melt and reduce the burden on the filter layer in the spinning assembly. Extend the life cycle. Reduce the waste yarn produced by exchanging the spinning pack, which improves the quality and reduces the cost.

Often by setting the filter before the completion of the polymer polymerization or the next process, however, the existing conventional filter usually uses a sieve to filter, although this filtering method removes impurities and gel particles to a large extent, but Due to its own structural defects, the filtration accuracy cannot be further improved, and it is impossible to filter and eliminate impurities and gel particles with small particle sizes. These impurities and gel particles with small particle sizes will be carried down by the melt. At the same time, a large pressure will be generated during the filtration process, which has high requirements for the structure of the filter.

Based on this, this application is made.

Utility model content

In order to overcome the above-mentioned defects existing in the existing melt filter, the utility model provides a filter core type melt filter with high filtering precision, convenient replacement, long service life and large dirt-holding capacity.

In order to achieve the above object, the technical scheme that the utility model takes is as follows:

The filter element melt filter is composed of a lower cover plate, a filter element, an upper cover plate and an outer cylinder. The melt inlet is set on the side wall of the lower cover plate, and multiple diversion ports are set on the top, and each diversion port is connected to the melt inlet. It is connected in the lower cover plate; the filter element is composed of a filter rod, a filter medium and a skeleton outer net. There are many small holes on the outer wall of the filter rod, and a melt channel is provided in the middle, and the small hole communicates with the melt channel, and the melt The lower end of the channel starts near the bottom of the filter rod, and the upper end runs through the top of the filter element. The filter medium is wrapped on the filter rod, and the skeleton outer net is erected on the filter medium; the filter element is installed between the upper cover and the lower cover, and the outer cylinder is set Outside the filter element; there is a melt outlet on the upper cover, and the melt outlet communicates with the melt channel; the melt enters through the melt inlet, and then enters the melt through the skeleton outer net, filter medium and small holes after passing through the diversion port The channel, which flows out through the melt outlet, completes the entire filtration.

Further, as a preference:

The filter medium is a mat-type filter medium, more preferably, the filter medium is a stainless steel fiber sintered felt, and its filtration accuracy is 20 μm.

The skeleton outer net is a stainless steel skeleton net, and its filtration precision is 100 mesh.

The lower end of the filter rod is installed on the lower cover plate through fins. More preferably, the fins are composed of an inner hole, a transition edge and an outer edge, the inner hole is larger than the outer diameter of the filter medium, the outer edge is the same as the outer diameter of the skeleton outer net, and the inner hole is lower than the transition edge, and the outer edge is more transitional. The sides are lower and higher than the bore. More preferably, the inclination angle θ of the transition edge is 8-15°, and the inclination angle β of the outer edge is 3-6°.

The filter element is divided into a central filter element and a peripheral filter element, the central filter element is located in the middle, and at the three corners of the same equilateral triangle, the center of the equilateral triangle overlaps with the center of the lower cover plate; the peripheral filter element is located on the periphery of the central filter element, and lie on the same circle.

When the utility model is applied to melt filtration, the filter element first passes through the inner hole of the fin through the thread at the lower end so that the lower end penetrates into the lower cover plate, and then presses the upper cover plate on the upper end of the filter rod through threaded connection, and then The filter element between the upper cover plate and the lower cover plate is put on the outer cylinder, that is, the assembly of the utility model is completed, and the utility model is put into the outer shell to form a filter system; the melt passes through the melt on the lower cover plate The inlet enters, enters between the filter element and the outer cylinder through the diversion port, and then passes through the skeleton outer net and the filter medium to complete the filtration, enters the melt channel of the filter rod through the small hole, and then enters the upper cover plate through the melt channel. And it is discharged through the melt outlet on the upper cover to realize the filtering work.

Compared with conventional filtering devices, the utility model has the following advantages:

1) The filter element in this utility model adopts three layers of filter rod, filter medium and skeleton outer net to form the main filter element. The melt is input from the lower end of the filter rod through the melt inlet, and sent to between the outer cylinder and the filter element through the diversion port. And it is conveyed from bottom to top in a countercurrent manner, and the filtration is completed under the action of the above-mentioned filter element, and then sent into the melt channel in the filter rod through the small hole, and continuously conveyed upward to the upper cover plate, and discharged through the melt outlet, thus completing the whole process. Filtration, in which the outer mesh of the skeleton is made of stainless steel skeleton mesh, while preventing the deformation of the filter medium, the first coarse filtration of the melt is performed, and the filter medium is made of stainless steel fiber sintered felt to remove impurities and unmelted gel particles in the melt , not easy to block, pressure, temperature and corrosion resistance.

2) In the present utility model, the filter element is installed at the central and peripheral positions respectively, and the diversion port is located at the outer position of the periphery. When the melt enters from the melt inlet, under the pressure and inertia of the melt itself , will gather at the center of the lower cover plate first and in large quantities. In order to avoid this situation, the utility model sets a plurality of diversion ports on the outer periphery of the lower cover plate. , At the same time, the filter elements are arranged according to the center and the periphery, which not only avoids the dense and uneven pressure, but also relieves the supply pressure to ensure that the filtration is fully and smoothly carried out.

3) In this utility model, the fins are designed as a structure with inner depth, middle height and outer shallowness, and the transition side and outer side are inclined, which can relieve the pressure of the filter element itself to a certain extent, and the deformation of the filter element caused by the instantaneous high temperature, so that the filter element It is more able to adapt to the high temperature environment, thereby improving the stability and service life of the filtration effect of the overall equipment.

Applying the utility model to the continuous filtration of high polymer melts has the advantages of high filtration precision, long service life and good working stability, which is beneficial to prolonging the spinning life. It plays a significant role in improving equipment utilization and increasing production.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is the front view of Fig. 1;

Fig. 3 is a three-dimensional schematic diagram of another angle of the utility model;

Fig. 4 is the structural representation of filter element in the utility model;

Fig. 5 is the plan view of fin in the utility model;

Fig. 6 is a longitudinal sectional view of the fin in the utility model.

Symbols in the figure: 1. Fixed plate; 2. Lower cover plate; 21. Melt inlet; 22. Splitter; 3. Fin; 31. Inner hole; 32. Transition edge; .Central filter element; 4b. Peripheral filter element; 41. Steel skeleton; 42. Filter medium; 43. Skeleton; 44. Melt channel; 5. Upper cover plate; 51. Melt outlet.

Detailed ways

Example 1

In this embodiment, the cartridge type melt filter is composed of a fixed plate 1, a lower cover plate 2, a filter element 4, an upper cover plate 5 and an outer cylinder in conjunction with Figures 1, 2 and 3, and the side wall of the lower cover plate 2 Melt inlet 21, the top is provided with a plurality of diversion ports 22, and each diversion port 22 is connected with the melt inlet 21 in the lower cover plate 2; with reference to Figure 4, the filter element 4 is composed of a filter rod 41, a filter medium 42 and a skeleton outer net 43, the outer wall of the filter rod 41 is provided with a plurality of small holes for the melt to enter, the hole diameter is 100 mesh, and the center position is provided with a melt channel 44, the small hole communicates with the melt channel 44, and the lower end of the melt channel 44 Closed and not communicated with other parts other than small holes, the upper end of the melt channel 44 runs through the top of the filter rod 41, and the filter medium 42 is wrapped on the filter rod 41. The filter medium 42 is a mat type made of stainless steel fiber sintered felt. The filtering accuracy is 20 μm, and the skeleton outer mesh 43 is erected on the filter medium 42. The skeleton outer mesh 43 is a stainless steel skeleton mesh, and its filtering accuracy is 100 mesh; the filter element 4 is installed on the upper cover plate 5 and the lower cover plate 2 Between, the outer cylinder is set outside the filter element 4; the upper cover plate 5 is provided with a melt outlet 51, and the melt outlet 51 communicates with the melt channel 44; Enter the melt channel 44 through the skeleton outer net 43, filter medium 42 and small holes, and flow out through the melt outlet 51 to complete the entire filtration. 5 and 6, the fin 3 is composed of an inner hole 31, a transition edge 32 and an outer edge 33, the inner hole 31 is larger than the outer diameter of the filter medium 42, the outer edge 33 is the same as the outer diameter of the skeleton outer net 43, the transition plate 32 and The outer sides 33 are all inclined settings, wherein the inclination angle θ of the transition side 32 is 11 °, and the inclination angle β of the outer side 33 is 6 °; about the filter element 4, the filter element installed in the central part is called the central filter element 4a, and the one installed in the peripheral part is called the central filter element 4a. The filter element is called peripheral filter element 4b.

Applying the filter of this embodiment to melt filtration, the filter element 4 first passes through the inner hole 31 of the fin 3 through the thread at the lower end to fix the lower end on the lower cover plate 2, and puts the outer cylinder on it, and the outer cylinder is provided with Inlet and outlet, and the inlet and outlet correspond to the melt inlet 21 on the lower cover plate 2 and the melt outlet 51 on the upper cover plate 5 respectively, which are melt access passages, and then the upper cover plate 5 is pressed through threaded connection. Set on the upper end of the filter rod 4, at this time, the melt channel 44 communicates with the top of the upper cover plate 5, and communicates with the melt outlet 51 through the upper cover plate 5, and finally fixes the lower cover plate 2 and the mounting plate 1, and then installs the The plate 1 and the upper cover plate 5 put this embodiment into the outer shell, and the melt enters the split port 22 through the melt inlet 21 of the lower cover plate 2, and then enters the gap between the outer cylinder and the filter element 4 through the inner hole 31 of the fin 3 Between them, it enters the filter medium 42 through the skeleton outer net 43. After completing the filtration process through the filter medium 42, it enters the melt channel 44 through the small hole, and the melt rises to the top of the filter rod 41, and passes through the melt outlet 51 at the top cover plate 5. Outflow, the melt can be discharged after several times of filtration on the same cross section. The filter medium 42 is made of stainless steel fiber sintered felt to remove impurities and unmelted gel particles in the melt. Mild and corrosion-resistant, the skeleton outer mesh 43 is made of stainless steel skeleton mesh, which can coarsely filter the melt while preventing the deformation of the filter medium 42; the filter element 4 is installed at the center and peripheral position of the lower cover plate 2, When entering, under the pressure and inertia of the melt itself, the central filter element 4a and the peripheral filter element 4b are respectively passed through the diversion port 22 to ensure that the filtration is fully and smoothly carried out; 32 and the outer edge 33 are all inclined settings, which can relieve the pressure of the filter element 4 itself to a certain extent, and the deformation of the filter element 4 caused by the instantaneous high temperature, so that the filter element 4 can better adapt to the high temperature environment, thereby improving the stability and stability of the filtering effect of the overall equipment. service life.

Applying this embodiment to the continuous filtration of high polymer melts has the advantages of high filtration precision, long service life, and good working stability, which is beneficial to prolonging the spinning life. It plays a significant role in improving equipment utilization and increasing production.

The above content is a further detailed description of the technical solutions provided in conjunction with the preferred implementation of the present utility model. It cannot be determined that the specific implementation of the present utility model is only limited to the above-mentioned descriptions. For those of ordinary skill in the technical field to which the utility model belongs, On the premise of not departing from the concept of the utility model, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (7)

1. The filter element melt filter is characterized in that: it is composed of a lower cover plate, a filter element, an upper cover plate and an outer cylinder. The melt inlet is set on the side wall of the lower cover plate, and multiple shunt ports are set on the top, and each shunt The mouth is connected with the melt inlet in the lower cover plate; the filter element is composed of a filter rod, a filter medium and a skeleton outer net. There are many small holes on the outer wall of the filter rod, and a melt channel in the middle. The small holes and the melt The channels are connected, and the lower end of the melt channel starts near the bottom of the filter rod, and the upper end runs through the top of the filter element. The filter medium is wrapped on the filter rod, and the skeleton outer net is erected on the filter medium; the filter element is installed on the upper cover and the lower cover. Between, the outer cylinder is set outside the filter element; there is a melt outlet on the upper cover, and the melt outlet communicates with the melt channel; the melt enters through the melt inlet, and then passes through the skeleton outer net and filter medium after passing through the diversion port. And the small hole enters the melt channel, flows out through the melt outlet, and completes the entire filtration. 2. The cartridge type melt filter according to claim 1, characterized in that: the filter medium is sintered stainless steel fiber felt. 3. The cartridge type melt filter according to claim 1, characterized in that: the skeleton outer mesh is a stainless steel skeleton mesh. 4. The cartridge-type melt filter according to claim 1, characterized in that: the lower end of the filter rod is mounted on the lower cover plate through fins. 5. The cartridge type melt filter according to claim 4, wherein the fins are composed of an inner hole, a transition edge and an outer edge, the inner hole is larger than the outer diameter of the filter medium, and the outer edge is connected to the outer mesh of the skeleton. The outer diameter is the same, and the inner hole is lower than the transition edge, and the outer edge is lower than the transition edge and higher than the inner hole. 6. The cartridge type melt filter according to claim 5, characterized in that: the inclination angle θ of the transition edge is 8-15°, and the inclination angle β of the outer edge is 3-6°. 7. The filter element type melt filter according to claim 1, characterized in that: the filter element is divided into a central filter element and a peripheral filter element, and the central filter element is located in the middle, at three corners of the same equilateral triangle, the The center of the equilateral triangle overlaps with the center of the lower cover plate; the peripheral filter element is located on the periphery of the central filter element and on the same circle.