CN110252012A - A filtering device and filtering method for the production of plastic additives - Google Patents

Abstract

The invention discloses a filter device used for the production of plastic additives, which comprises a filter box, a feed pipe is arranged on the left side of the top of the filter box, and an initial filter net and a secondary filter net are placed in the inner cavity of the filter box, and the filtering The bottom of the box is provided with the left sewage pipe, the right sewage pipe and the discharge pipe, the top of the filter box is provided with the first water inlet pipe and the second water inlet pipe, the top right side of the filter box is provided with an air pump, and the air outlet on the left side of the air pump is provided There is a drying pipe, the left side wall of the filter box is provided with a cleaning motor, the right side of the cleaning motor is provided with a rotating shaft, the outer wall of the rotating shaft is provided with cleaning leaves, the discharge pipe, the left sewage pipe and the right sewage pipe are all equipped with electromagnetic Valve, the right side wall of the filter box is provided with an overflow pipe. The present invention cleans the inner cavity of the filter box of the filter device through the combined action of the cleaning leaf, the high-pressure nozzle and the air pump, cleans the oily residual additives and the solid impurities attached to it, and ensures the cleaning of the inner cavity of the filter box.

Description

A filtering device and filtering method for the production of plastic additives

technical field

The invention relates to the technical field of production equipment for plastic additives, in particular to a filter device for the production of plastic additives.

Background technique

Liquid plastic additives are a common type of plastic additives, such as liquid calcium zinc stabilizers. After the preparation is completed, due to the presence of solid reactant raw materials, and in order to ensure the complete reaction of liquid organic raw materials that are difficult to distinguish, it is generally necessary to add Excessive solid raw materials ensure that the product will not be mixed with liquid raw materials, so after the reaction is completed, some unreacted solids will be mixed in the liquid plastic additives, and solid impurities need to be filtered, otherwise solid impurities will be mixed When some plastic additives are added to the plastic production process, they will affect the product quality of plastic products. However, since liquid plastic additives are generally oily, they tend to remain in the filter device and are difficult to clean, resulting in a poor cleanliness of the filtered filter device, which is easy to contaminate the filter device and cause subsequent filtering effects. Therefore, we propose A filter device used in the production of plastic additives.

Contents of the invention

The present invention provides a filter device for the production of plastic additives, the main purpose of which is to clean the inner cavity of the filter box of the filter device through the combined action of cleaning leaves, high-pressure nozzles and air pumps, and remove oily residual additives and adhesives. The solid impurities on the top are cleaned to ensure the cleanliness of the inner cavity of the filter box.

In order to achieve the above object, the technical scheme that the present invention takes is:

A filter device for the production of plastic additives, comprising a filter box, a feed pipe is arranged on the left side of the top of the filter box, and an initial filter screen and a secondary filter screen are vertically placed in the inner cavity of the filter box, And the initial filter screen is located on the left side of the secondary filter screen, the bottom right side of the filter box is provided with a discharge pipe, the top of the filter box is provided with a first water inlet pipe and a second water inlet pipe, and the first water inlet pipe The water pipe is located between the initial filter screen and the secondary filter screen, the second water inlet pipe is located on the right side of the secondary filter screen, and the first water inlet pipe and the second water inlet pipe extend into the bottom of the filter box and are equipped with high-pressure nozzles , the right side of the top of the filter box is provided with an air pump, and the air outlet end on the left side of the air pump is provided with a drying pipe, and the top air outlet end of the drying pipe extends into the inner cavity of the filter box, and the left side wall of the filter box is provided with There is a cleaning motor, the power output end on the right side of the cleaning motor is provided with a rotating shaft, and the right end of the rotating shaft extends into the inner cavity of the filter box, and the outer wall of one end of the inner cavity of the rotating shaft extending into the filter box is provided with a cleaning leaf, The bottom of the filter box is provided with a left sewage pipe and a right sewage pipe, the left sewage pipe is located on the left side of the initial filter, the right sewage pipe is located between the initial filter and the secondary filter, and the discharge Electromagnetic valves are all arranged on the drain pipe, the left drain pipe and the right drain pipe, and an overflow pipe is arranged on the top of the right side wall of the filter box.

Preferably, the filter box is funnel-shaped between the bottom of the inner cavity separated by the primary filter screen and the secondary filter screen, so as to facilitate the discharge of debris at the bottom of the filter box inner cavity.

Preferably, the pore size of the primary filter is larger than the pore size of the secondary filter, so as to realize gradual filtration of liquid plastic additives.

Preferably, the cleaning leaf includes a connecting plate fixed on the outer wall of the rotating shaft, a spring is provided at the end of the connecting plate away from the rotating shaft, and a scraper is provided at the end of the spring far away from the spring, so as to realize cleaning of the left side of the initial filter screen. The bottom of the inner cavity of the filter box is cleaned.

Preferably, the width of the connecting plate is large in the middle and small at both ends, and the angle between the connecting plate and the horizontal plane is equal to the angle between the bottom of the inner cavity of the filter box and the horizontal plane between the left side wall of the filter box and the initial filter screen, so as to ensure the scraping When the plate is in contact with the bottom of the inner cavity of the filter box, the pressure it receives is basically consistent.

Preferably, the overflow pipe is located below the high-pressure spray head and the drying pipe, so as to prevent the liquid level from contacting the high-pressure spray head and the drying pipe from being too high.

7. A filtration method for the production of plastic additives, characterized in that the method comprises the following steps:

It is mainly divided into two steps: filtration and cleaning;

Filtration: Close the solenoid valves on the left and right sewage pipes, open the solenoid valve on the discharge pipe, and introduce liquid plastic additives into the filter box through the feed pipe. The liquid plastic additives first pass through the initial filter with larger mesh. The filter is filtered, and then filtered through the secondary filter with a smaller mesh, so that the solid impurities remain on the left side of the primary filter and the secondary filter, and the filtered plastic additives are discharged from the filter box through the discharge pipe. Use two sets of filters, the initial filter with larger meshes and the secondary filter with smaller meshes, to achieve progressive filtration, which can reduce the problem of easy blockage of the filter due to the use of only one set of filters. The effect is better, and the overflow pipe can prevent the liquid level from being too high to pollute the high-pressure nozzle and drying pipe;

Cleaning: First open the solenoid valves on the left and right sewage pipes, spray water from the high-pressure nozzle to the right side of the primary filter and the secondary filter through the first water inlet pipe and the second water inlet pipe, and wash down the filter attached to the primary filter. The solid impurities and oily plastic additives on the net and the secondary filter net, so that the sewage is discharged through the left sewage pipe, the right sewage pipe and the discharge pipe, and then close the solenoid valves on the left sewage pipe, the right sewage pipe and the discharge pipe, and continue Inject water into the filter box through the high-pressure nozzle, stop adding water after the overflow pipe drains, start the cleaning motor, the cleaning motor drives the cleaning leaf to rotate in the filter box through the rotating shaft, and the scraper of the cleaning leaf rotates to the low position. The bottom of the cavity is in contact with and is subjected to an upward force, which makes the spring compressed and shortened. When the scraper is in contact with the bottom of the filter box cavity, the scraper is affected by the reaction force of the spring to the bottom of the filter box cavity. Clean up the oily plastic additives of solid impurities, and then open the solenoid valves on the left sewage pipe, right sewage pipe and discharge pipe to discharge the sewage. After repeating several times, thoroughly clean the inner cavity of the filter box, and finally start the air pump to pass The drying pipe injects air into the inner cavity of the filter box, and accelerates the drying of the inner cavity of the filter box by accelerating the air flow.

Compared with the prior art, the present invention has the following beneficial effects:

In the present invention, the cleaning motor drives the rotating shaft and the cleaning leaves to rotate in the inner cavity of the filter box on the left side of the initial filter screen, and the scraper of the cleaning leaves contacts the bottom of the inner cavity of the filter box when it rotates to a low position, and receives an upward force , so that the spring is compressed and shortened by force. When the scraper is in contact with the bottom of the filter box cavity, the scraper is subjected to the reaction force of the spring to clean the oily plastic additives containing solid impurities at the bottom of the filter box cavity; high pressure The nozzle backwashes the primary filter and the secondary filter with high-pressure water to ensure the cleaning of the primary filter and the secondary filter, prevent the mesh holes of the primary filter and the secondary filter from clogging, and improve the quality of the primary filter. And the service life of the secondary filter; the air pump introduces flowing air to the filter box through the drying pipe, which can accelerate the drying of the cleaned filter box.

Description of drawings

Fig. 1 is a structural representation of the present invention

Fig. 2 is a schematic diagram of the structure of the cleaning leaf of the present invention.

In the figure: 1-filter box; 2-feed pipe; 3-initial filter; 4-secondary filter; 5-outlet pipe; 6-first water inlet pipe; 7-second water inlet pipe; 8-high pressure Nozzle; 9-air pump; 10-drying pipe; 11-cleaning motor; 12-rotating shaft; 13-cleaning leaf; 1301-connecting plate; 1302-spring; 1303-scraper; 14-left sewage pipe; 15-right sewage Pipe; 16-electromagnetic valve; 17-overflow pipe.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.

As shown in Figure 1-2, a filter device for the production of plastic additives, including a filter box 1, the top left side of the filter box 1 is provided with a feed pipe 2, and the inner cavity of the filter box 1 is vertically placed with an initial The filter screen 3 and the secondary filter screen 4, and the initial filter screen 3 is located on the left side of the secondary filter screen 4, and the aperture of the initial filter screen 3 is larger than that of the secondary filter screen 4, so as to realize the gradual filtration of liquid plastic additives , the filter box 1 is funnel-shaped between the bottom of the inner cavity separated by the initial filter 3 and the secondary filter 4, which facilitates the discharge of debris at the bottom of the filter box 1, and the right side of the bottom of the filter box 1 is provided with a discharge Pipe 5, the top of the filter box 1 is provided with a first water inlet pipe 6 and a second water inlet pipe 7, the first water inlet pipe 6 is located between the primary filter 3 and the secondary filter 4, and the second water inlet 7 is located between the secondary filter On the right side of the net 4, the bottom of the first water inlet pipe 6 and the second water inlet pipe 7 extending into the filter box 1 is provided with a high-pressure nozzle 8, and the right side of the top of the filter box 1 is provided with an air pump 9, and the air outlet on the left side of the air pump 9 A drying pipe 10 is provided, and the top outlet end of the drying pipe 10 extends into the inner cavity of the filter box 1, the left side wall of the filter box 1 is provided with a cleaning motor 11, and the right power output end of the cleaning motor 11 is provided with a rotating shaft 12 , and the right end of the rotating shaft 12 stretches into the inner cavity of the filter box 1, and the outer wall of one end of the inner cavity of the rotating shaft 12 stretches into the filter box 1 is provided with a cleaning leaf 13, and the cleaning leaf 13 includes a connecting plate 1301 fixed on the outer wall of the rotating shaft 12, Connecting plate 1301 is provided with spring 1302 away from one end of rotating shaft 12, and spring 1302 is provided with scraper 1303 away from one end of spring 1302, realizes cleaning the inner cavity bottom of filter box 1 on the left side of initial filter screen 3, and connecting plate 1301 The width is large in the middle and small at both ends, and the angle between the connecting plate 1301 and the horizontal plane is equal to the angle between the bottom of the inner cavity of the filter box 1 and the horizontal plane between the left side wall of the filter box 1 and the initial filter screen 3, so that the scraper 1303 is in the same position as the horizontal plane. When the bottom of the inner cavity of the filter box 1 contacts, the pressure received is basically consistent. The bottom of the filter box 1 is provided with a left sewage pipe 14 and a right sewage pipe 15. The left sewage pipe 14 is located on the left side of the initial filter screen 3, and the right sewage pipe 15 is located between the initial filter screen 3 and the secondary filter screen 4, the discharge pipe 5, the left sewage pipe 14 and the right sewage pipe 15 are all equipped with a solenoid valve 16, and the top of the right side wall of the filter box 1 is provided with an overflow pipe 17. The overflow pipe 17 is located below the high-pressure spray head 8 and the drying pipe 10 to prevent the liquid level from being too high and contacting the high-pressure spray head 8 and the drying pipe 10.

A specific application of this embodiment is that the present invention is divided into two steps of filtering and cleaning:

Filtration: close the solenoid valve 16 on the left sewage pipe 14 and the right sewage pipe 15, open the solenoid valve 16 on the discharge pipe 5, and introduce the liquid plastic additive into the filter box 1 through the feed pipe 2. The liquid plastic additive is first Filter through the initial filter screen 3 with larger meshes, and then filter through the secondary filter screen 4 with smaller meshes, so that solid impurities remain on the left side of the initial filter screen 3 and the secondary filter screen 4, and the filtered plastic The auxiliary agent is discharged from the filter box 1 through the discharge pipe 5, and two sets of filter screens are used to filter the initial filter screen 3 with a larger mesh and the secondary filter screen 4 with a smaller mesh to realize progressive filtration, which can reduce the Only one set of filter screens is used to cause the filter screen to be easily blocked, and the filtering effect is better. The overflow pipe 17 can prevent the liquid level from being too high and pollute the high-pressure nozzle 8 and the drying pipe 10 .

Cleaning: first open the solenoid valve 16 on the left sewage pipe 14 and the right sewage pipe 15, and spray water from the high-pressure nozzle to the right side of the initial filter 3 and the secondary filter 4 through the first water inlet pipe 6 and the second water inlet pipe 7 , wash down the solid impurities and oily plastic additives attached to the initial filter screen 3 and the secondary filter screen 4, make the sewage discharge through the left sewage pipe 14, the right sewage pipe 15 and the discharge pipe 5, and then close the left sewage pipe 14 1. The electromagnetic valve 16 on the right sewage pipe 15 and the discharge pipe 5 continues to inject water into the filter box 1 through the high-pressure nozzle 8, stops adding water after the overflow pipe 17 drains, starts the cleaning motor 11, and the cleaning motor 11 passes through the rotating shaft 12 The cleaning blade 13 is driven to rotate in the filter box 1, and the scraper 1303 of the cleaning blade 13 contacts the bottom of the inner cavity of the filter box 1 when it rotates to a low position, and is subjected to an upward force, so that the spring 1302 is compressed and shortened. When the scraper 1303 is in contact with the bottom of the inner cavity of the filter box 1, the scraper is subjected to the reaction force of the spring 1302 to clean the oily plastic additives containing solid impurities at the bottom of the inner cavity of the filter box 1, and then open the left drain pipe 14, The solenoid valve 16 on the right sewage pipe 15 and the discharge pipe 5 discharges the sewage. After repeated several times, the inner cavity of the filter box 1 is thoroughly cleaned, and finally the air pump 9 is started to flow into the inner cavity of the filter box 1 through the drying pipe 10 Air is injected to accelerate the drying of the inner cavity of the filter box 1 by accelerating the air flow.

In the description of this specification, descriptions with reference to the terms "one embodiment", "example", "specific example" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment of the present invention. In an embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are only to help illustrate the invention. The preferred embodiments are not exhaustive in all detail, nor are the inventions limited to specific embodiments described. Obviously, many modifications and variations can be made based on the contents of this specification. This description selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The invention is to be limited only by the claims, along with their full scope and equivalents.

Claims (7)

1. a kind of filter device of the production for plastic additive, it is characterised in that: including Rose Box (1), the Rose Box (1) Top left side be provided with feed pipe (2), the inner cavity of the Rose Box (1) has been disposed vertically inceptive filtering net (3) and secondary mistake Strainer (4), and inceptive filtering net (3) is located at the left side of secondary filter net (4), the bottom right of the Rose Box (1) is provided with Discharge nozzle (5) is provided with the first water inlet pipe (6) and the second water inlet pipe (7), first water inlet at the top of the Rose Box (1) Pipe (6) is located between inceptive filtering net (3) and secondary filter net (4), and second water inlet pipe (7) is located at secondary filter net (4) Right side, the bottom that first water inlet pipe (6) and the second water inlet pipe (7) protrude into Rose Box (1) is provided with high-pressure nozzle (8), the top right side of the Rose Box (1) is provided with air pump (9), and the outlet side on the left of the air pump (9) is provided with drying tube (10), and the inner cavity of Rose Box (1) is protruded into the top outlet side of drying tube (10), and the left side wall of the Rose Box (1) is provided with It cleaning motor (11), the right side power output end of cleaning motor (11) is provided with rotation axis (12), and rotation axis (12) Right end protrudes into the inner cavity of Rose Box (1), and inner cavity one end outer wall that the rotation axis (12) protrudes into Rose Box (1) is provided with cleaning leaf (13), the bottom of the Rose Box (1) is provided with left sewage pipe (14) and right sewage pipe (15), and the left sewage pipe (14) is located at The left side of inceptive filtering net (3), the right sewage pipe (15) is located between inceptive filtering net (3) and secondary filter net (4), described It is provided with solenoid valve (16) on discharge nozzle (5), left sewage pipe (14) and right sewage pipe (15), the right side of the Rose Box (1) Overflow pipe (17) are provided at the top of wall.

2. a kind of filter device of production for plastic additive according to claim 1, it is characterised in that: the filtering Case (1) passes through funnel-shaped between inceptive filtering net (3) and the intracavity bottom of secondary filter net (4) separation.

3. a kind of filter device of production for plastic additive according to claim 1, it is characterised in that: described initial The aperture of filter screen (3) is greater than the aperture of secondary filter net (4).

4. a kind of filter device of production for plastic additive according to claim 1, it is characterised in that: the cleaning Leaf (13) includes the connecting plate (1301) for being fixed on rotation axis (12) outer wall, and the connecting plate (1301) is far from rotation axis (12) One end is provided with spring (1302), and the spring (1302) is provided with scraper plate (1303) far from the one end of spring (1302).

5. a kind of filter device of the production for plastic additive according to claim 2,4, it is characterised in that: the company The width of fishplate bar (1301) is small in the end and big in the middle, and the angle of connecting plate (1301) and horizontal plane is equal to Rose Box (1) left side wall The angle of the intracavity bottom of Rose Box (1) and horizontal plane between inceptive filtering net (3).

6. a kind of filter device of production for plastic additive according to claim 1, it is characterised in that: the overflow Pipe (17) is located at the lower section of high-pressure nozzle (8) and drying tube (10).

7. a kind of filter method of the production for plastic additive, which is characterized in that the described method comprises the following steps:

It is broadly divided into two steps of filtering and cleaning；Filtering: closing the solenoid valve on left sewage pipe and right sewage pipe, opens discharging Solenoid valve on pipe imports liquid plastics auxiliary agent into Rose Box by feed pipe, liquid plastics auxiliary agent first pass around mesh compared with Big inceptive filtering net filtration makes solid impurity stay in inceptive filtering then using the lesser secondary filter net filtration of mesh Rose Box is discharged by discharge nozzle in the left side of net and secondary filter net, filtered plastic additive, wherein biggish using mesh Inceptive filtering net and mesh two groups of filter screen filtrations of lesser secondary filter net, realize progressive filtering, can reduce because only making Lead to the susceptible to plugging problem of filter screen with one group of filter screen, filter effect is more preferable, and wherein overflow pipe can prevent liquid level excessively high And pollution high voltage spray head and drying tube；

Cleaning: the solenoid valve being first turned on left sewage pipe and right sewage pipe, by the first water inlet pipe and the second water inlet pipe by height It presses spray head to spray water to the right side of inceptive filtering net and secondary filter net, sweeps away that be attached to inceptive filtering net and secondary filter online Solid impurity and oily plastic additive make sewage by left sewage pipe, right sewage pipe and discharge nozzle discharge, are then shut off left bank dirt Solenoid valve on pipe, right sewage pipe and discharge nozzle, continues through high-pressure nozzle and fills the water into Rose Box, stops after overflow pipe draining Only plus water, starting cleaning motor, cleaning motor drive cleaning leaf to rotate in Rose Box by rotation axis, and the scraper plate for cleaning leaf exists It is contacted when rotating to low level with the bottom of filtering box cavity, and by upward active force, so that spring stress compression is shortened, scraping Scraper plate is solid to containing for the bottom for filtering box cavity by the reaction force of spring during plate is contacted with the bottom of filtering box cavity The oily plastic additive of body impurity is cleared up, and the solenoid valve on left sewage pipe, right sewage pipe and discharge nozzle is then opened, discharge Sewage, repeatedly after, thoroughly clean up the inner cavity of Rose Box, last booster air pump, through drying tube into Rose Box Air is injected in chamber, by accelerating air flowing, the drying of accelerated filtration box cavity.