Self-compensation type sealed melt filtering device

Abstract

The utility model relates to a self-compensating sealed melt filtering device which comprises a filtering chamber, a feeding pipe, a discharging pipe and a slag discharging pipe, the air filter further comprises an instrument mechanism, a valve body mechanism, an air compressor and a main controller, the top of the filter chamber is connected with a pressure control pipe of the air compressor, the instrument mechanism is connected to the input end of the main controller, and the valve body mechanism and the air compressor are connected to the output end of the main controller; the instrument mechanism comprises a flow meter arranged on the discharge pipe and a pressure meter arranged at the top of each filter chamber; the valve body mechanism comprises proportional electromagnetic valves arranged on the feeding pipe, the discharging pipe and the circulating pipe, and a pressure increasing valve and an exhaust valve which are arranged at the tail end of the pressure control pipe. According to the melt filtering device, a feedback compensation system composed of the metering device, the valve body and the master controller is additionally arranged on the basis of the structure of an existing melt filtering device, the stable filtered melt output quantity can be maintained on the basis of the continuous filtering function of the melt filtering device, and then the discharging stability of the filtering link on a melt processing line is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polymer melt processing equipment, and in particular to a self-compensating sealed melt filtering device. Background Art

[0002] Melt filter is an important equipment for high-speed spinning and spinning fine denier yarn. It is used for continuous filtration of polymer melts. It improves the spinning performance of the melt and ensures the spinning quality by removing impurities and unmelted particles in the melt. In the existing melt filtration device, when the polymer melt raw material feeding rate is constant, the filter and filter element will have reduced efficiency due to the accumulation of filter cakes during the continuous filtration process, resulting in poor stability of the output rate of the filtered melt, which directly affects the processing efficiency of the process downstream of the filtration link on the line. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a self-compensating sealed melt filtering device, by adding a feedback compensation system composed of a meter, a valve body, and a main control on the basis of the structure of the existing melt filtering device, so that on the basis of the continuous filtering function, it can maintain a stable output of the filtered melt, thereby improving the discharge stability of the filtering link on the melt processing line.

[0004] The self-compensating sealed melt filtering device comprises at least two filter chambers, a feed pipe for inputting raw material melt, a discharge pipe for outputting filtered melt, and a slag discharge pipe for beating out filter residue; the feed pipe is connected with each filter chamber via a diverter valve, each filter chamber is connected with a slag discharge pipe via a confluence valve, each filter chamber is provided with a collecting plate and a plurality of filters mounted on the collecting plate, the filter is connected with the discharge pipe via the collecting plate, and a circulation pipe connected with the feed pipe is provided upstream of the end of the discharge pipe; it also comprises an instrument mechanism, a valve body mechanism, an air compressor mechanism, and a plurality of filter elements installed on the collecting plate. The filter chamber is threadedly connected to the bottom of the hollow collecting plate and communicated with the collecting plate cavity. The top of the filter chamber is connected to the pressure control tube of the air compressor. The instrument mechanism is connected to the input end of the main controller. The valve body mechanism and the air compressor are connected to the output end of the main controller. The instrument mechanism includes a flow meter arranged on the discharge pipe and a pressure gauge arranged on the top of each filter chamber. The valve body mechanism includes a proportional solenoid valve arranged on the feed pipe, the discharge pipe and the circulation pipe, and a boost valve and an exhaust valve arranged at the end of the pressure control tube.

[0005] Furthermore, an exhaust branch pipe is provided at the connection between the pressure control pipe and the filter chamber, the boost valve is arranged upstream of the exhaust branch pipe, and the exhaust valve is arranged at the end of the exhaust branch pipe.

[0006] Specifically, the main controller adopts a PLC programmable controller.

[0007] Specifically, the diverter valve adopts ANSIB16 numerically controlled jacketed rotary diverter valve, the proportional solenoid valve adopts 4WRZE16 multi-opening solenoid valve, and the boost valve and exhaust valve adopt ELECALL 2014Y flange solenoid valve.

[0008] The utility model discloses a self-compensating sealed melt filtering device, which adds a feedback compensation system consisting of a meter, a valve body and a main control on the basis of the structure of an existing melt filtering device, so that on the basis of the continuous filtering function, it can maintain a stable output of filtered melt, thereby improving the discharge stability of the filtering link on the melt processing line. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The following is a further description of a self-compensating sealed melt filter device of the utility model in conjunction with the accompanying drawings:

[0010] Figure 1 This is a schematic diagram of the planar structure of the self-compensating sealed melt filter device (the dotted line part is a perspective structure);

[0011] Figure 2 It is a structural schematic diagram of a filter of the self-compensating sealed melt filtering device;

[0012] Figure 3 It is a block diagram of the logical structure and operating principle of the feedback compensation system of the self-compensating sealed melt filtering device.

[0013] In the figure:

[0014] 1-filter chamber, 2-feed pipe, 3-discharge pipe, 4-slag discharge pipe, 5-diverter valve, 6-merger valve, 7-instrument mechanism, 8-valve body mechanism, 9-air compressor, 10-main controller;

[0015] 11-collecting tray, 12-filter, 13-pressure control tube, 131-exhaust branch pipe; 31-circulation pipe; 71-flow meter, 72-pressure gauge; 81-proportional solenoid valve, 82-boosting valve, 83-exhaust valve. DETAILED DESCRIPTION

[0016] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] In the description of the present invention, it should be understood that the terms "left", "right", "front", "back", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0018] The technical solution of the utility model is further described below with specific embodiments, but the protection scope of the utility model is not limited to the following embodiments.

[0019] Implementation method 1: Figure 1 , 2 As shown, the self-compensating sealed melt filtering device comprises at least two filter chambers 1, a feed pipe 2 for inputting raw material melt, a discharge pipe 3 for outputting filtered melt, and a slag discharge pipe 4 for beating out filter residue; the feed pipe 2 is connected with each filter chamber 1 via a diverter valve 5, and each filter chamber 1 is connected with the slag discharge pipe 4 via a confluence valve 6, and each filter chamber 1 is provided with a collecting tray 11 and a plurality of filters 12 installed on the collecting tray 11, and the filter 12 is connected with the discharge pipe 3 via the collecting tray 11, and a circulation pipe 31 connected with the feed pipe 2 is provided at the upstream of the end of the discharge pipe 3; it also includes an instrument mechanism 7, a valve body mechanism 8, an air compressor 9 and a main control The main controller 10 is provided with a filter element 12, each filter 12 in the filter chamber 1 is threadedly connected to the bottom of the hollow collecting plate 11 and is connected to the cavity of the collecting plate 11, the top of the filter chamber 1 is connected to the pressure control tube 13 of the air compressor, the instrument mechanism 7 is connected to the input end of the main controller 10, and the valve body mechanism 8 and the air compressor 9 are connected to the output end of the main controller 10; the instrument mechanism 7 includes a flow meter 71 arranged on the discharge pipe 3 and a pressure gauge 72 arranged on the top of each filter chamber 1; the valve body mechanism 8 includes a proportional solenoid valve 81 arranged on the feed pipe 2, the discharge pipe 3 and the circulation pipe 31, and a boost valve 82 and an exhaust valve 83 arranged at the end of the pressure control tube 13.

[0020] Embodiment 2: The connection between the pressure control tube 13 and the filter chamber 1 of the self-compensating sealed melt filtration device is provided with an exhaust branch pipe 131, the boost valve 82 is arranged upstream of the exhaust branch pipe 131, and the exhaust valve 83 is arranged at the end of the exhaust branch pipe 131. Under normal working conditions, the boost valve and the exhaust valve are closed; under the boost working condition, the air compressor and the boost valve are opened, and the exhaust valve is closed; under the decompression working condition, the air compressor is stopped, and the boost valve and the exhaust valve are opened. The remaining structures and components are as described in Embodiment 1 and will not be described again.

[0021] Embodiment 3: The main controller 10 of the self-compensating sealed melt filtration device adopts a PLC programmable controller. The diverter valve 5 adopts an ANSIB16 numerically controlled jacket rotary diverter valve, the proportional solenoid valve 81 adopts a 4WRZE16 multi-opening solenoid valve, and the booster valve 82 and the exhaust valve 83 adopt an ELECALL 2014Y flange solenoid valve. The remaining structures and components are as described in Embodiment 1 and will not be described again.

[0022] When running: Figure 1 As shown, the raw material melt is fed into the filter chamber through the feed pipe, heated in the filter chamber, and then flows into the cavity of the collecting plate through the flexible metal filter screen and the perforated filter element in sequence, and then is sent to the discharge pipe after being concentrated, and then flows into the filter chamber through the circulation pipe, and is discharged from the discharge pipe after several cycles. Figure 3 As shown, the flow meter collects the flow of the discharge pipe and generates a weak current signal to input into the main controller. When the flow is higher than or lower than the preset flow threshold, the main controller adjusts the discharge flow back to the preset flow threshold by controlling the opening ratio of the proportional solenoid valve on the feed pipe and the air compressor to increase the pressure in the filter chamber. At the same time, it can deal with the following two extreme situations: when the discharge volume is too high and the proportional solenoid valve on the feed pipe is fully open and the air compressor is not turned on (generally when the filter or filter element is newly replaced, resulting in insufficient supply of raw material melt), the main controller controls the proportional solenoid valve on the circulation pipe to reduce the discharge volume by diversion; when the discharge volume is too low and the proportional solenoid valve on the feed pipe is closed (generally when the filter element is completely blocked and needs to be replaced), the air compressor is continuously turned on to make the pressure in the filter chamber too high, the main controller controls the diversion valve to change the working filter chamber to reduce the discharge volume.

[0023] The self-compensating sealed melt filter device adds a feedback compensation system consisting of a meter, a valve body, and a main control on the basis of the structure of the existing melt filter device, so that on the basis of its continuous filtering function, it can maintain a stable output of filtered melt, thereby improving the discharge stability of the filtering link on the melt processing line.

[0024] The above description shows the main features, basic principles, and advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments or embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, the above embodiments or embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A self-compensating sealed melt filtration device, characterized in that: The invention comprises at least two filter chambers (1), a feed pipe (2) for inputting raw material melt, a discharge pipe (3) for outputting filtered melt, and a slag discharge pipe (4) for beating out filter residue; the feed pipe (2) is connected to each filter chamber (1) via a diverter valve (5), each filter chamber (1) is connected to the slag discharge pipe (4) via a confluence valve (6), each filter chamber (1) is provided with a collecting plate (11) and a plurality of filters (12) mounted on the collecting plate (11), the filters (12) are connected to the discharge pipe (3) via the collecting plate (11), and a circulation pipe (31) connected to the feed pipe (2) is provided at the upstream end of the discharge pipe (3); It also includes an instrument mechanism (7), a valve body mechanism (8), an air compressor (9) and a main controller (10); each filter (12) in the filter chamber (1) is threadedly connected to the bottom of the hollow collecting plate (11) and communicated with the cavity of the collecting plate (11); a pressure control tube (13) is connected to the air compressor at the top of the filter chamber (1); the instrument mechanism (7) is connected to the input end of the main controller (10); the valve body mechanism (8) and the air compressor (9) are connected to the output end of the main controller (10); the instrument mechanism (7) includes a flow meter (71) arranged on the discharge pipe (3) and a pressure gauge (72) arranged on the top of each filter chamber (1); the valve body mechanism (8) includes a proportional solenoid valve (81) arranged on the feed pipe (2), the discharge pipe (3) and the circulation pipe (31), and a boost valve (82) and an exhaust valve (83) arranged at the end of the pressure control tube (13).

2. The self-compensating sealed melt filtration device according to claim 1 is characterized in that: An exhaust branch pipe (131) is provided at the connection between the pressure control pipe (13) and the filter chamber (1), the boost valve (82) is arranged upstream of the exhaust branch pipe (131), and the exhaust valve (83) is arranged at the end of the exhaust branch pipe (131).

3. The self-compensating sealed melt filtration device according to claim 1 is characterized in that: The main controller (10) adopts a PLC programmable controller.

4. The self-compensating sealed melt filtration device according to claim 1 is characterized in that: The diverter valve (5) adopts an ANSIB16 numerically controlled jacketed rotary diverter valve, the proportional solenoid valve (81) adopts a 4WRZE16 multi-opening solenoid valve, and the booster valve (82) and the exhaust valve (83) adopt an ELECALL 2014Y flange solenoid valve.

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