CN214773176U - PVC feed proportioning system - Google Patents

Abstract

The utility model relates to a PVC compounding technical field discloses a PVC feed proportioning system, and it includes air conveyor, storage silo, powder title, raw materials title, carries auger, oil storage tank and blender, and air conveyor is connected with the storage silo, and the discharge gate of storage silo is called with the powder through carrying the auger and is connected, and the discharge gate that the powder was called is connected with the blender through carrying the auger, and the discharge gate that the raw materials was called is connected with the blender through carrying the auger, and the oil storage tank sets up the one side at the blender, oil feed pipe is last to install oil feed pump, batch meter and valve, carries to be provided with the wearing layer in auger's helical blade's the outer fringe, and the wearing layer comprises a plurality of wearing blocks, and the wearing block passes through bolt demountable installation in helical blade's outer fringe. The utility model has the advantages that: the online proportioning of each component of the PVC mixture is realized, the PVC mixing efficiency is improved, the whole replacement of the helical blade is avoided by replacing the wear-resistant block, the structure is simple, the maintenance cost is low, and the equipment use cost is reduced.

Description

PVC feed proportioning system

Technical Field

The utility model relates to a PVC compounding technical field, especially a PVC feed proportioning system.

Background

PVC is white powder with an amorphous structure, the branching degree is small, the relative density is about 1.4, the glass transition temperature is 77-90 ℃, decomposition starts at about 170 ℃, the stability to light and heat is poor, the PVC can be decomposed to generate hydrogen chloride at more than 100 ℃ or after long-time sunshine insolation, further the hydrogen chloride is automatically catalyzed and decomposed to cause color change, the physical and mechanical properties are also rapidly reduced, and a stabilizer must be added in practical application to improve the stability to heat and light.

The molecular weight of the PVC produced industrially is generally within the range of 5-11 ten thousand, and the PVC has larger polydispersity, and the molecular weight is increased along with the reduction of polymerization temperature; without a fixed melting point, softening begins at 80-85 ℃, the temperature of 130 ℃ becomes a viscoelastic state, and the temperature of 160-180 ℃ begins to change into a viscous state; the composite material has good mechanical properties, the tensile strength is about 60MPa, and the impact strength is 5-10 kJ/m 2; has excellent dielectric properties.

PVC has been the most widely used plastic in the world and is used in a very wide range of applications. The product has wide application in building materials, industrial products, daily necessities, floor leathers, floor tiles, artificial leathers, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers and the like.

In the PVC powder production process, the auger for conveying the powder is in a longer condition, the outer edge of the rotating blade of the auger is seriously abraded, and in the prior art, the whole set of rotating blade is usually replaced, so that the maintenance cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a PVC feed proportioning system to solve the problem of the whole set of change of auger rotating vane of current transport PVC powder.

The purpose of the utility model is realized through the following technical scheme: a PVC feeding and batching system comprises a pneumatic conveyor, a storage bin, a powder scale, a raw material scale, a conveying auger, an oil storage tank and a mixer, wherein the pneumatic conveyor is connected with the storage bin, the powder is conveyed into the storage bin by the pneumatic conveyor, a discharge port of the storage bin is connected with the powder scale by the conveying auger, the discharge port of the powder scale is connected with the mixer by the conveying auger, the discharge port of the raw material scale is connected with the mixer by the conveying auger, the oil storage tank is arranged on one side of the mixer, the mixer is connected with the mixer by an oil conveying pipe, the oil conveying pipe is provided with an oil conveying pump, a flow meter and a valve, the oil conveying pump is positioned at the downstream of the valve, the flow meter is positioned at the downstream of the oil conveying pump, the mixer comprises a barrel body, and an upper end cover is arranged at the top of the barrel body, install agitating unit in the barrel, be provided with the wearing layer on the outer fringe of the helical blade of carrying the auger, the wearing layer comprises a plurality of wearing blocks, wearing block passes through bolt demountable installation in helical blade's outer fringe.

Preferably, agitating unit includes (mixing) shaft, scraper blade and connecting rod, install multilayer stirring rake on the (mixing) shaft, and each layer the stirring rake includes a plurality of connecting rods, the one end of connecting rod is installed on the (mixing) shaft, the scraper blade is installed to the other end of connecting rod, the scraper blade laminating is in on the inside wall of barrel, the top and a agitator motor of (mixing) shaft are connected, agitator motor installs on the upper end cover, the rotatable installation in bottom of (mixing) shaft the bottom of barrel, still install a plurality of liquid feeding pipes on the upper end cover, just the liquid outlet of liquid feeding pipe is located in the barrel.

Preferably, the scraper blade has a material receiving surface, an arc-shaped back surface, an installation surface A and an installation surface B, the arc-shaped back surface and the material receiving surface form a triangular tip portion, one side edge of the installation surface A is connected with the material receiving surface at an angle, the other side edge of the installation surface A is connected with one side edge of the installation surface B at an angle, the other side edge of the installation surface B is connected with the arc-shaped back surface, and the other end of the connecting rod is installed on the installation surface A.

Preferably, the mounting surface B is provided with a stirring plate through a locking screw B.

Preferably, the connecting rod is provided with a connecting lug, the connecting lug is provided with a through hole, the mounting surface A is provided with a threaded hole, and the scraper is mounted on the connecting rod through a locking screw A.

Preferably, each layer of the stirring paddle comprises four connecting rods, and the connecting rods are uniformly distributed on the same circumference.

Preferably, the stirring rake on upper strata and lower floor the stirring rake radially staggers the setting, and stagger the angle and be 45.

Preferably, the lower end face of the scraper blade on the upper layer is flush with the upper end face of the scraper blade on the lower layer.

Preferably, a ladder groove has been seted up to the bottom of barrel, the bearing is installed to the ladder inslot, the bottom suit of (mixing) shaft is in the bearing, the bottom of barrel still installs lower sealing cover, lower sealing cover will the ladder groove is sealed.

The utility model has the advantages of it is following:

1. the whole spiral blade replacement is avoided by replacing the wear-resistant block, the structure is simple, the maintenance cost is low, and the use cost of the equipment is reduced.

2. PVC powder is fed into the cylinder body through the conveying auger, and the cylinder body forms a sealed space, so that the loss of the PVC powder due to dust raising is avoided, the waste of the PVC powder is avoided, and the proportion of PVC mixed materials is ensured; and set up the multilayer stirring rake, and the setting of staggering of upper and lower two-layer stirring rake, be provided with a plurality of scraper blades on every layer of stirring rake, the scraper blade can strike off the mixture that glues to barrel internal surface, makes it participate in the compounding of material to improve compounding quality and efficiency, improved the utilization ratio of raw and other materials, reduced the waste of raw and other materials, practiced thrift manufacturing cost.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the structure of the blender;

FIG. 3 is a first schematic structural diagram of a stirring device;

FIG. 4 is a second schematic structural view of the stirring device;

FIG. 5 is a schematic cross-sectional view A-A of FIG. 2;

FIG. 6 is a schematic cross-sectional view of B-B of FIG. 2;

FIG. 7 is a schematic structural view of a connecting rod;

FIG. 8 is an enlarged schematic view at I of FIG. 4;

FIG. 9 is a schematic view of the construction of the squeegee;

FIG. 10 is a schematic view of the mounting structure of the wear block;

in the figure, 1-stirring shaft, 2-connecting rod, 3-scraping plate, 4-stirring plate, 5-locking screw A, 6-locking screw B, 20-wear-resistant block, 21-bolt, 22-nut, 23-connecting lug, 31-material-receiving surface, 32-arc back surface, 33-mounting surface A, 34-mounting surface B, 11-cylinder, 12-stirring device, 13-lower sealing cover, 14-upper end cover, 15-stirring motor, 16-liquid feeding pipe, 17-conveying auger, 18-storage bin, 19-stepped groove, 41-pneumatic conveyer, 42-powder scale, 43-raw material scale, 44-mixer, 45-oil storage tank, 46-oil feeding pump and 47-flowmeter.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figure 1, a PVC feeding and batching system comprises a pneumatic conveyor 41, a storage bin 18, a powder scale 42, a raw material scale 43, a conveying auger, an oil storage tank 45 and a blender 44, wherein the pneumatic conveyor 41 is connected with the storage bin 18, the pneumatic conveyor 41 feeds powder into the storage bin 18, the feeding end of the pneumatic conveyor 41 is connected with a PVC powder bin, the PVC powder is fed into the storage bin 18 through the pneumatic conveyor 41, the discharging port of the storage bin 18 is connected with the powder scale 42 through the conveying auger, when batching is required, the discharging port of the storage bin 18 discharges the powder, the PVC powder is fed into the powder scale 42 through the conveying auger, the PVC powder scale 42 weighs the PVC powder, when the PVC powder reaches a set weight, the discharging port of the storage bin 18 is closed, the conveying auger stops feeding the powder, the discharging port of the powder scale 42 is connected with the blender 44 through the conveying auger, the discharge gate of powder title 42 is opened, then should carry the auger and deliver to the blender 44 in the PVC powder, and is further, the discharge end of this transport auger is located inside blender 44, be provided with the wearing layer on the helical blade's of transport auger outer fringe, the wearing layer comprises a plurality of wearing blocks, wearing block passes through bolt demountable installation in helical blade's outer fringe, through changing wearing block avoided whole change helical blade, simple structure cost of maintenance is low, equipment use cost has been reduced.

In this embodiment, the discharge port of the raw material scale 43 is connected to the mixer 44 through the conveying auger, the raw material scale 43 mainly contains auxiliary materials, and the amount of the auxiliary materials is small, so that large-scale storage equipment is not needed, the raw material scale 43 is provided with a plurality of raw material scales 43, each raw material scale 43 corresponds to one auxiliary material, during batching, the discharge port of the raw material scale 43 is opened, the raw material scale 43 calculates the feeding amount of the auxiliary materials through the difference between the front weight and the rear weight, when the blanking of the auxiliary materials reaches the set weight, the discharge port of the raw material scale 43 is closed, at this time, the conveying auger continuously works for a period of time, the purpose of the conveying auger is to completely feed the auxiliary materials in the conveying auger into the mixer 44, and under a general condition, the conveying auger continuously works for 1-2 minutes.

In this embodiment, the oil tank 45 is disposed on one side of the mixer 44, the mixer 44 is connected to the mixer 44 through an oil feed pipe, the oil feed pipe is provided with an oil feed pump 46, a flow meter 47 and a valve, the oil feed pump 46 is located downstream of the valve, the flow meter 47 is located downstream of the oil feed pump 46, the flow meter 47 measures the amount of oil feed, and when the oil feed amount is determined, the oil feed pump 46 stops working.

In this embodiment, as shown in fig. 2, the blender includes the barrel, the upper end cover is installed at the top of barrel, install agitating unit in the barrel, as shown in fig. 4 and 3, agitating unit 12 includes (mixing) shaft 1, scraper blade 3 and stirring board 4, install the multilayer stirring rake on the (mixing) shaft 1, and each layer of stirring rake includes a plurality of connecting rods 2, in this embodiment, as shown in fig. 6 and 5, include four connecting rods 2 on each layer of stirring rake, and connecting rod 2 evenly distributed is on same circumference, the one end of connecting rod 2 is installed on (mixing) shaft 1, be convenient for the dismantlement of connecting rod 2, furthermore, set up the screw rod on the connecting rod 2, and set up the screw hole with screw rod complex on the (mixing) shaft 1, through the cooperation of screw rod and screw hole, realize the dismantled connection of connecting rod 2, thereby make connecting rod 2 be convenient for the dismouting.

In this embodiment, as shown in fig. 9, the laminating of scraper blade 3 is on the inside wall of barrel 11, it is concrete, scraper blade 3 has and meets the charge level 31, the arc back 32, installation face a33 and installation face B34, furthermore, the arc back 32 constitutes triangle point portion with meeting the charge level 31, the tip of triangle point portion laminates with the inside wall of barrel 11 all the time, consequently, when the pivot rotates, triangle point portion can strike off the material that glues to the inside wall of barrel 11, make this material get back to the inside stirring that stirs of barrel 11, thereby improve the quality and the efficiency of PVC compounding, in this embodiment, the interval between arc back 32 and the barrel 11 inside wall reduces along the direction of rotation of pivot gradually, thereby avoid arc back 32 and barrel 11 to take place to interfere, guarantee scraper blade 3's normal operating.

In this embodiment, one side of the mounting surface a33 is connected to the material receiving surface 31 at an angle, the other side of the mounting surface a33 is connected to one side of the mounting surface B34 at an angle, the other side of the mounting surface B34 is connected to the arc-shaped back surface 32, the other end of the connecting rod 2 is mounted to the mounting surface a33, the stirring plate 4 is mounted to the mounting surface B34, as shown in fig. 7, the connecting rod 2 is provided with a connecting lug 23, the connecting lug 23 is provided with a through hole, a threaded hole is provided on the mounting surface a33, the scraper 3 is mounted to the connecting rod 2 via a locking screw a5, the scraper 3 contacts with the inner wall of the cylinder 11, so that during the rotation of the rotating shaft, the scraper 3 scrapes off the powder on the inner wall of the cylinder 11, the scraped powder enters the material receiving surface 31 into the cylinder 11, and during the long-term scraping, the triangular tip of the scraper 3 is easily worn, thereby causing a gap between the scraper 3 and the inner wall of the cylinder 11, so that the scraper 3 can not scrape the powder on the inner wall of the cylinder 11, and at the moment, the locking screw A5 is loosened and a new scraper 3 is replaced.

In this embodiment, as shown in fig. 8, a threaded hole is also opened on the mounting surface B34 of the scraper blade 3, the stirring plate 4 is mounted on the mounting surface B34 of the scraper blade 3 through a locking screw B6, the stirring plate 4 can accelerate the mixing of raw materials, the mixing efficiency is improved, and the stirring plate 4 only plays a role in stirring, the wear of the stirring plate is small, even after the wear, the stirring plate can be used normally, so the use length of the stirring plate 4 is long, the stirring plate 4 is detachably connected with the scraper blade 3, only the scraper blade 3 needs to be replaced after the scraper blade 3 is damaged, the stirring plate 4 does not need to be replaced, and the replacement cost and the operation cost of products are reduced.

In this embodiment, upper stirring rake and the setting of radially staggering of lower floor's stirring rake, and the angle of staggering is 45, and is further, and the lower terminal surface of upper scraper blade 3 flushes with the up end of lower floor's scraper blade 3, consequently on the axial direction, the internal surface of cover barrel 11 that a plurality of scraper blade 3 can be large-area for it strikes off all to glue glutinous material on the 11 inner walls of barrel between upper scraper blade 3 and the lower floor's scraper blade 3, thereby further improvement compounding quality and compounding efficiency.

In this embodiment, the top end of (mixing) shaft is connected with a agitator motor 15, and agitator motor 15 installs on upper end cover 14, and the bottom of (mixing) shaft is rotatable installs in the bottom of barrel 11, still installs a plurality of liquid feeding pipes 16 on upper end cover 14, and the liquid outlet of liquid feeding pipe 16 is located barrel 11, through liquid feeding pipe 16, can add modifiers such as plasticizer, emollient, stabilizer in barrel 11, realizes the compounding of PVC.

In this embodiment, a ladder groove 19 has been seted up to the bottom of barrel 11, installs the bearing in the ladder groove 19, and the bottom suit of (mixing) shaft is in the bearing, and lower sealing cover 13 is still installed to the bottom of barrel 11, and lower sealing cover 13 is sealed ladder groove 19, and through the bearing, the (mixing) shaft can rotate relative to barrel 11, and lower sealing cover 13 then can avoid the powder to enter into ladder groove 19 to guarantee the life of bearing.

In this embodiment, after the PVC powder is mixed, upper end cover 14 can be opened, the PVC mixture that will mix is taken out, also can set up the discharging pipe in the bottom of barrel 11, opens the valve on the discharging pipe, discharges the PVC mixture.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (9)

1. The utility model provides a PVC feed proportioning system, includes air conveyor, storage silo, powder title, raw materials title, carries auger, oil storage tank and blender, air conveyor with the storage silo is connected, just air conveyor sends the powder into in the storage silo, the discharge gate of storage silo through carry the auger with the powder title is connected, the discharge gate of powder title through carry the auger with the blender is connected, the discharge gate of raw materials title through carry the auger with the blender is connected, the oil storage tank sets up one side of blender, just the blender through send oil pipe with the blender is connected, send oil pipe to install oil feed pump, flowmeter and valve, the oil feed pump is located the low reaches of valve, the flowmeter is located the low reaches of oil feed pump, its characterized in that: the blender includes the barrel, the upper end cover is installed at the top of barrel, install agitating unit in the barrel, be provided with the wearing layer on the helical blade's of carrying the auger outer fringe, the wearing layer comprises a plurality of wearing blocks, wearing block passes through bolt demountable installation in helical blade's outer fringe is last.

2. A PVC feed batching system as defined in claim 1, wherein: agitating unit includes (mixing) shaft, scraper blade and connecting rod, install multilayer stirring rake on the (mixing) shaft, and each layer the stirring rake includes a plurality of connecting rods, the one end of connecting rod is installed on the (mixing) shaft, the scraper blade is installed to the other end of connecting rod, the scraper blade laminating is in on the inside wall of barrel, the top and a agitator motor of (mixing) shaft are connected, agitator motor installs on the upper end cover, the rotatable installation in bottom of (mixing) shaft the bottom of barrel, still install a plurality of liquid feeding pipes on the upper end cover, just the liquid outlet of liquid feeding pipe is located in the barrel.

3. A PVC feed batching system as defined in claim 2, wherein: the scraper blade is provided with a material receiving surface, an arc-shaped back surface, an A mounting surface and a B mounting surface, the arc-shaped back surface and the material receiving surface form a triangular tip part, one side edge of the A mounting surface is connected with the material receiving surface at an angle, the other side edge of the A mounting surface is connected with one side edge of the B mounting surface at an angle, the other side edge of the B mounting surface is connected with the arc-shaped back surface, and the other end of the connecting rod is mounted on the A mounting surface.

4. A PVC feed batching system as defined in claim 3, wherein: and the mounting surface B is provided with a stirring plate through a locking screw B.

5. A PVC feed batching system as defined in claim 4, wherein: the scraper is characterized in that a connecting lug is arranged on the connecting rod, a through hole is formed in the connecting lug, a threaded hole is formed in the mounting surface A, and the scraper is mounted on the connecting rod through a locking screw A.

6. A PVC feed batching system as defined in claim 5, wherein: each layer including four connecting rods on the stirring rake, just the connecting rod evenly distributed is on same circumference.

7. A PVC feed batching system as defined in claim 6, wherein: the upper strata stirring rake and lower floor the radial setting of staggering of stirring rake, and the angle of staggering is 45.

8. A PVC feed batching system as defined in claim 7, wherein: the lower end face of the upper layer of the scraper is flush with the upper end face of the lower layer of the scraper.

9. A PVC feed batching system as claimed in claim 2 or 8, wherein: a ladder groove has been seted up to the bottom of barrel, the bearing is installed to the ladder inslot, the bottom suit of (mixing) shaft is in the bearing, the bottom of barrel still installs lower sealing cover, lower sealing cover will the ladder groove is sealed.

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