Switchable melt filter

Abstract

The utility model discloses a switchable melt filter in the field of melt filters, which comprises a shell, two front and back corresponding mounting cavities are arranged in the shell, a filter cartridge is vertically arranged in each mounting cavity, and a filter screen is arranged in each filter cartridge. A feeding switching valve and a discharging switching valve are respectively arranged on the shell corresponding to the filter cartridges in the two mounting cavities, the feeding switching valve and the discharging switching valve are three-way valves, two outlets of the feeding switching valve are respectively arranged corresponding to feeding ports of the two filter cartridges, two inlets of the discharging switching valve are respectively arranged corresponding to discharging ports of the two filter cartridges, and the two inlets of the discharging switching valve are respectively arranged corresponding to discharging ports of the two filter cartridges. A melt inlet and a melt outlet are formed in the outer side of the shell, the melt inlet corresponds to an inlet of the feeding switching valve, and the melt outlet corresponds to an outlet of the discharging switching valve. According to the utility model, the spinning process can be ensured to be smoothly carried out, the phenomena of yarn breakage, material dripping and the like are avoided, and the filter cartridge is convenient to replace.

Description

Technical Field

[0001] The utility model belongs to the field of melt filters, and particularly relates to a switchable melt filter. Background Art

[0002] A melt filter is an important device in high-speed spinning and fine denier filament spinning, used for continuous filtration of polymer melt to remove impurities and unmelted particles in the melt, so as to improve the spinning performance of the melt and ensure the spinning quality. In the production of spunbond non-woven fabrics, the current melt filter has only one set of filtering devices, and the problems are as follows: when this set of filtering devices has problems, it is impossible to ensure the smooth progress of the spinning process, and phenomena such as filament breakage and dripping are likely to occur. Moreover, it is not convenient to replace this set of filtering devices. Once there are problems, it will greatly affect the melt filtration efficiency and lead to a decrease in production capacity. Content of the Utility Model

[0003] The purpose of the utility model is to provide a switchable melt filter. Through two sets of filtering components, one set works and the other set is in standby, which can ensure the smooth progress of the spinning process, avoid phenomena such as filament breakage and dripping, and the replacement of this set of filtering devices is convenient.

[0004] The purpose of the utility model is realized as follows: A switchable melt filter includes a housing. Inside the housing, there are two corresponding installation chambers arranged front and back. A filter cartridge is vertically arranged in each installation chamber. The housing is respectively provided with a feed switching valve and a discharge switching valve corresponding to the filter cartridges in the two installation chambers. Both the feed switching valve and the discharge switching valve are three-way valves. The two outlets of the feed switching valve are respectively arranged corresponding to the feed ports of the two filter cartridges, and the two inlets of the discharge switching valve are respectively arranged corresponding to the discharge ports of the two filter cartridges. A melt inlet and a melt outlet are respectively arranged on the outer side of the housing. The melt inlet is arranged corresponding to the inlet of the feed switching valve, and the melt outlet is arranged corresponding to the outlet of the discharge switching valve.

[0005] When the utility model works, the melt enters the inlet of the feed switching valve of the housing through the melt inlet, enters the corresponding filter cartridge through the corresponding outlet of the feed switching valve, passes through the filter element for filtration, enters the corresponding inlet of the discharge switching valve through the upper end of the filter cartridge, and then is discharged from the housing through the outlet of the discharge switching valve by the melt outlet; the corresponding filter cartridge can be automatically selected for filtration through the feed switching valve and the discharge switching valve, and the other filter cartridge is in standby. Pipes for connecting the melt to enter the feed switching valve, the discharge switching valve or the filter cartridge are arranged inside the housing. Compared with the prior art, the beneficial effect of the utility model lies in that: it can ensure the smooth progress of the spinning process through two sets of filtering components, one set works and the other set is in standby, and avoid phenomena such as filament breakage and dripping.

[0006] As a further improvement of the utility model, at least four support feet are arranged at the bottom of the housing.

[0007] As a further improvement of the present utility model, the filter cartridge includes an outer cylinder body. An inner step is provided on the inner wall of the outer cylinder body. An upper mounting plate is provided on the annular end surface of the inner step. A plurality of mounting holes are formed in the upper mounting plate. A filter element extending downward is provided in each mounting hole. An upper chamber is provided above the upper mounting plate. A discharge port corresponding to the upper chamber is provided on the side surface of the outer cylinder body. A feed channel corresponding to the lower end of each filter element is provided inside the outer cylinder body. A feed port corresponding to the feed channel is provided on the side surface of the outer cylinder body. The filter cartridge is supported on the upper mounting plate, and the installation and replacement are convenient.

[0008] As a further improvement of the present utility model, a gland is provided above the upper mounting plate inside the outer cylinder body. The upper chamber is located between the gland and the upper mounting plate. The outer periphery of the gland is threadedly connected to the inner wall of the outer cylinder body. A lifting ring is provided on the upper part of the gland. A sleeve-shaped top cover is provided above the gland inside the outer cylinder body. The top cover is threadedly connected to the inner wall of the outer cylinder body. After the top cover is opened, the filter cartridge can be lifted and installed or disassembled through the lifting ring.

[0009] As a further improvement of the present utility model, a hollow filter channel is provided inside the filter element. An installation ring is provided at the upper end of the filter element. The outer periphery of the installation ring is threadedly connected to the inner wall of the corresponding mounting hole. The melt enters from the lower feed port of the filter cartridge, and the melt is filtered by the outer shells of the filter elements. The impurities are blocked outside the filter elements, and the melt enters the discharge port at the upper end of the filter cartridge through the internal filter channel.

[0010] As a further improvement of the present utility model, an inclined tightening rod is provided on the housing corresponding to each filter cartridge. The tightening rod tightens and fixes the filter cartridge.

[0011] In order to facilitate the installation and disassembly of the filter cartridge, an installation door is provided on the top of the housing corresponding to each filter cartridge. The installation door can be opened or closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the front view of the present utility model.

[0013] Figure 2 is the left view of the present utility model.

[0014] Figure 3 is the top view of the present utility model.

[0015] Figure 4 is the structural schematic diagram of the filter cartridge.

[0016] Figure 5 is Figure 4 the enlarged view of part A in

[0017] Figure 6 is the structural schematic diagram of the filter element.

[0018] Figure 7Schematic diagram of the inlet and outlet of the feed switching valve.

[0019] Figure 8 Schematic diagram of the inlet and outlet of the discharge switching valve.

[0020] Wherein, 1 is the housing, 2 is the installation chamber, 3 is the filter cartridge, 3a is the outer cylinder, 3b is the inner step, 4 is the feed switching valve, 5 is the discharge switching valve, 6 is the feed inlet, 7 is the discharge outlet, 8 is the melt inlet, 9 is the melt outlet, 10 is the support leg, 11 is the upper mounting plate, 11a is the mounting hole, 12 is the filter element, 12a is the mounting ring, 13 is the upper chamber, 14 is the feed channel, 15 is the gland, 16 is the lifting ring, 17 is the top cover, 18 is the jacking rod, 19 is the installation door, e is the inlet, f is the outlet. Detailed implementation manners

[0021] As Figure 1-8 shown, a switchable melt filter includes a housing 1. Inside the housing 1, there are two vertically corresponding installation chambers 2 arranged front and back. In each installation chamber 2, a filter cartridge 3 is vertically arranged. On the housing 1, a feed switching valve 4 and a discharge switching valve 5 are respectively provided corresponding to the filter cartridges 3 in the two installation chambers 2. Both the feed switching valve 4 and the discharge switching valve 5 are three-way valves. The two outlets f of the feed switching valve 4 are respectively arranged corresponding to the feed inlets 6 of the two filter cartridges 3. The two inlets e of the discharge switching valve 5 are respectively arranged corresponding to the discharge outlets 7 of the two filter cartridges 3. A melt inlet 8 and a melt outlet 9 are respectively arranged on the outer side of the housing 1. The melt inlet 8 is arranged corresponding to the inlet e of the feed switching valve 4, and the melt outlet 9 is arranged corresponding to the outlet f of the discharge switching valve 5.

[0022] The filter cartridge 3 includes an outer cylinder body 3a. An inner step 3b is provided on the inner wall of the outer cylinder body 3a. An upper mounting plate 11 is provided on the annular end surface of the inner step 3b. A plurality of mounting holes 11a are formed in the upper mounting plate 11. A filter element 12 extending downward is provided in each mounting hole 11a. An upper chamber 13 is provided above the upper mounting plate 11. A discharge port 7 is provided on the side surface of the outer cylinder body 3a corresponding to the upper chamber 13. A feed channel 14 is provided inside the outer cylinder body 3a corresponding to the lower ends of the filter elements 12. A feed port 6 is provided on the side surface of the outer cylinder body 3a corresponding to the feed channel 14. The filter cartridge 3 is supported on the upper mounting plate 11, and the installation and replacement are convenient. A gland 15 is provided above the upper mounting plate 11 inside the outer cylinder body 3a. The upper chamber 13 is located between the gland 15 and the upper mounting plate 11. The outer periphery of the gland 15 is threadedly connected to the inner wall of the outer cylinder body 3a. A lifting ring 16 is provided on the upper part of the gland 15. A sleeve-shaped top cover 17 is provided above the gland 15 inside the outer cylinder body 3a. The top cover 17 is threadedly connected to the inner wall of the outer cylinder body 3a. After the top cover 17 is opened, the filter cartridge 3 can be lifted and installed or disassembled through the lifting ring 16. A hollow filter channel is provided inside the filter element 12. An installation ring 12a is provided at the upper end of the filter element 12. The outer periphery of the installation ring 12a is threadedly connected to the inner wall of the corresponding mounting hole 11a. The melt enters from the lower feed port 6 of the filter cartridge 3, and the melt is filtered by the outer shells of the filter elements 12. The impurities are blocked outside the filter elements 12, and the melt enters the discharge port 7 at the upper end of the filter cartridge 3 through the internal filter channel.

[0023] A tilted tightening rod 18 is provided on the housing 1 corresponding to each filter cartridge 3. The tightening rod 18 tightens and fixes the filter cartridge 3.

[0024] In order to facilitate the installation and disassembly of the filter cartridge 3, an installation door 19 is provided on the top of the housing 1 corresponding to each filter cartridge 3. The installation door 19 can be opened or closed.

[0025] At least four support feet 10 are provided at the bottom of the housing 1.

[0026] When the utility model works, the melt enters the inlet of the feed switching valve 4 of the housing 1 through the melt inlet 8, enters the corresponding filter cartridge 3 through the corresponding outlet of the feed switching valve 4, is filtered by the filter element 12 and then enters the corresponding inlet of the discharge switching valve 5 from the upper end of the filter cartridge 3, and is discharged from the housing 1 through the outlet of the discharge switching valve 5 by the melt outlet 9; the corresponding filter cartridge 3 can be automatically selected for filtration through the feed switching valve 4 and the discharge switching valve 5, and the other filter cartridge 3 is in standby. Pipes connecting the melt to enter the feed switching valve 4, the discharge switching valve 5 or the filter cartridge 3 are provided inside the housing 1. The advantages of the utility model are as follows: two sets of filtering components can be used, one set works and the other set is in standby, which can ensure the smooth progress of the spinning process and avoid phenomena such as broken filaments and dripping materials; the filter cartridge 3 can be lifted and installed or disassembled through the lifting ring 16, and the replacement of the filtering device is convenient.

[0027] The present utility model is not limited to the above embodiments. Based on the technical solutions disclosed in the present utility model, those skilled in the art can make some substitutions and deformations to some of the technical features without creative labor according to the disclosed technical content, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A switchable melt filter, comprising a housing, characterized in that: Two front and rear corresponding installation chambers are arranged inside the shell, and a filter cartridge is vertically arranged in each installation chamber. The shell is respectively provided with a feed switching valve and a discharge switching valve corresponding to the filter cartridges in the two installation chambers. Both the feed switching valve and the discharge switching valve are three-way valves. The two outlets of the feed switching valve respectively correspond to the feed ports of the two filter cartridges, and the two inlets of the discharge switching valve respectively correspond to the discharge ports of the two filter cartridges. A melt inlet and a melt outlet are respectively arranged on the outside of the shell. The melt inlet corresponds to the inlet setting of the feed switching valve, and the melt outlet corresponds to the outlet setting of the discharge switching valve.

2. A switchable melt filter according to claim 1, characterized in that: At least four supporting feet are arranged at the bottom of the shell.

3. A switchable melt filter according to claim 1 or 2, characterized in that: The filter cartridge comprises an outer cylinder body, an inner step is arranged on the inner wall of the outer cylinder body, an upper mounting plate is arranged on the annular end surface of the inner step, a plurality of mounting holes are opened on the upper mounting plate, a filter element extending downward is arranged in each mounting hole, an upper chamber is arranged above the upper mounting plate, a discharge port is arranged on the side surface of the outer cylinder body corresponding to the upper chamber, a feed channel is arranged in the outer cylinder body corresponding to the lower end of each filter element, and a feed port is arranged on the side surface of the outer cylinder body corresponding to the feed channel.

4. A switchable melt filter according to claim 3, characterized in that: A pressure cover is arranged in the outer cylinder above the upper mounting plate, the upper chamber is located between the pressure cover and the upper mounting plate, the outer periphery of the pressure cover is threadedly connected to the inner wall of the outer cylinder, a lifting ring is arranged on the upper part of the pressure cover, a sleeve-shaped top cover is arranged in the outer cylinder above the pressure cover, and the top cover is threadedly connected to the inner wall of the outer cylinder.

5. A switchable melt filter according to claim 3, characterized in that: A hollow filtering channel is arranged inside the filter element, a mounting ring is arranged at the upper end of the filter element, and the outer periphery of the mounting ring is threadedly connected with the inner wall of the corresponding mounting hole.

6. A switchable melt filter according to claim 1 or 2, characterized in that: An inclined tightening rod is arranged on the shell corresponding to each filter cartridge.

7. A switchable melt filter according to claim 1 or 2, characterized in that: A mounting door is arranged on the top of the shell corresponding to each filter cartridge.

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