CN114210539B - Powder lubricant screening and packaging equipment for PVC and application method thereof - Google Patents

Abstract

The invention discloses screening and subpackaging equipment for a powdery lubricant for PVC and a using method thereof, and the screening and subpackaging equipment comprises a tank body, a screening mechanism, a weighing mechanism and a crushing mechanism, wherein a screening cavity, a weighing cavity and a crushing cavity are formed in the tank body, the weighing cavity and the crushing cavity are positioned below the screening cavity, the weighing cavity and the crushing cavity are arranged in parallel along a Y axis, the weighing cavity is positioned at the left side of the crushing cavity, the screening mechanism is arranged on the inner side wall of the screening cavity, the weighing mechanism is arranged on the inner side wall of the weighing cavity, and the crushing mechanism is arranged on the inner side wall of the crushing cavity; the invention realizes the functions of promoting screening in time in the screening process of the powder lubricant for PVC, carrying out quantitative weighing operation in time after screening materials, timely cleaning and secondary crushing on the screened materials, and timely maintaining and maintaining in the screening process of the powder lubricant for PVC, and is suitable for wide popularization and use.

Description

Powder lubricant screening and packaging equipment for PVC and application method thereof

Technical Field

The invention relates to the technical field of PVC powder lubricant production equipment, in particular to PVC powder lubricant screening and packaging equipment and a use method thereof.

Background

The PVC lubricant has the function of improving the fluidity of resin and the mold release property of products in plastic processing and preventing defects caused by adhesion in a machine or a mold. The lubricant is used for preventing defects caused by adhesion in a machine or a mold during plastic processing and in mold release of the product. Typically in a molding compound or applied to the surface of a mold cavity; common lubricants include fatty acids and salts thereof, and long-chain aliphatic hydrocarbons, which can be classified into external lubricants and internal lubricants according to the mechanism by which the lubricant acts. External lubricant: such lubricants have poor compatibility with molding resins and are therefore commonly used in molding machines or molds to form a lubricating layer with the resin for facilitating the flow of the resin and the demolding of the article, such as paraffin wax; internal lubricant: the lubricant has good compatibility with resin, is often mixed into the resin, reduces the melt viscosity of the resin, improves the fluidity of the resin, such as butyl stearate, lead stearate and the like, and the stearate is not only a good lubricant, but also an effective stabilizer.

At present, the lubricant is cooled to be solid in the production process, and then the solid product is crushed into powder for packaging; 1. the existing powder lubricant for PVC in the market generally has the condition of poor particle screening effect in the powder in the production and use processes, so that the screening speed and the screening efficiency of the powder lubricant for PVC in the production process are lower; 2. the existing powdery lubricant for PVC in the market can not be weighed in time after screening in the production process, so that the powdery lubricant for PVC can be weighed and packaged only after screening and needs secondary transportation, and the production speed of the powdery lubricant for PVC is seriously influenced; 3. most of the powder lubricants for PVC in the current market do not timely grind the screened materials for the second time, so that the screened materials cannot be timely utilized; 4. at present, the powdery lubricant for PVC in the market generally cannot repair and maintain the sieve plate in time, so that the screening speed and efficiency of equipment cannot be ensured; therefore, it is necessary to design a screening and sub-packaging device for a powder lubricant for PVC and a using method thereof.

Disclosure of Invention

The invention mainly aims to provide screening and split charging equipment for a powdery lubricant for PVC and a using method thereof, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a powdered lubricant screening partial shipment equipment for PVC and application method thereof, includes a jar body, screening mechanism, weighing mechanism and crushing mechanism, screening cavity, weighing cavity and crushing cavity have been seted up to the jar body inside, wherein weighing cavity and crushing cavity are located screening cavity's below position, just between weighing cavity and the crushing cavity along Y axle parallel arrangement, and weighing cavity is located crushing cavity left side position, adopt the standpipe A intercommunication that is provided with between weighing cavity and the screening cavity, just adopt the standpipe B intercommunication that is provided with between crushing cavity and the screening cavity, screening cavity inside wall is provided with screening mechanism, just weighing mechanism is installed to weighing cavity inside wall, crushing cavity inside wall is provided with crushing mechanism;

screening mechanism includes guide rail, electric slider, motor B, pivot B, sieve, screening groove, motor A, pivot A, slot, screen cloth and screw, screening chamber inside wall is provided with the guide rail, just guide rail lateral wall sliding connection has can follow X axle straight line gliding electric slider, just electric slider inside is provided with motor A, motor A's output shaft is provided with pivot A's one end, just pivot A's the other end and motor B lateral wall fixed connection, wherein motor B's output shaft is provided with pivot B's one end, just pivot B's the other end and sieve right side outer wall fixed connection, the screening groove has been seted up to sieve left side outer wall, just the slot has been seted up to screening groove open end outer wall, and slot inside wall gomphosis is connected with the screen cloth.

Preferably, the weighing mechanism comprises a supporting plate, a groove, a weighing sensor, a weighing plate, a weighing groove, a motor C and a rotating shaft C, wherein the motor C is arranged on the inner side wall of the weighing cavity, the output shaft of the motor C is provided with one end of the rotating shaft C, the other end of the rotating shaft C is fixedly connected with the outer side wall of the supporting plate, the upper surface of the supporting plate is provided with a groove with an upward opening end, the inner wall of the bottom surface of the groove is provided with the weighing sensor, the upper surface of the weighing sensor is provided with the weighing plate, and the upper surface of the weighing plate is provided with the weighing groove with an upward opening end.

Preferably, the crushing mechanism comprises a crushing shaft, a crushing wheel and a crusher, wherein the crusher is arranged on the inner side wall of the crushing cavity, one end of the crushing shaft is arranged on an output shaft of the crusher, and the crushing wheel is fixedly connected with the other end of the crushing shaft.

Preferably, the outer wall of the left side of the tank body is inserted with a feeding pipe, the outlet end of the feeding pipe is provided with a clamping groove, the inner side wall of the clamping groove is connected with the opening end of the screening groove in a clamping manner, and the outer wall of the right side of the tank body is provided with a side door.

Preferably, one end of a screw is connected to the upper surface of the screen in a threaded manner, and the other end of the screw extends into the screen plate.

Preferably, the number of the screens is a plurality, and the screens are uniformly distributed on the inner side wall of the screening groove.

Preferably, the number of the pulverizer and the number of the pulverizing wheels are two, and the two pulverizing wheels are in meshed connection.

Preferably, a controller is arranged on the outer side wall of the tank body, and a signal input end of the controller is electrically connected with a signal output end of an external power supply.

Preferably, the signal output end of the controller is electrically connected with the signal input ends of the electric slide block, the motor A, the motor B, the motor C, the weighing sensor and the pulverizer.

Preferably, the method comprises the following steps:

step one: screening, namely placing materials along a feeding pipe, sliding the materials into a screening groove under the action of gravity, separating the materials smaller than the pore diameter of the screen from the screening groove and the screen plate and falling into a vertical pipe A under the screening action of the screen, and simultaneously driving a rotating shaft B to rotate through the operation of a motor B so as to drive the screen plate to vertically rotate, so that the screening operation of the materials in the screening groove is promoted;

step two: weighing, namely transporting the screened materials into a weighing cavity by using a vertical pipe A, falling into a weighing groove under the action of gravity, and then carrying out weighing operation on the materials in the weighing groove by using a weighing sensor;

step three: after the weighing sensor detects that the weight of the material in the weighing groove is qualified, the motor C operates to drive the rotating shaft C to rotate so as to drive the supporting plate to vertically rotate in the weighing cavity, and then the material in the weighing groove can be dropped to the inner wall of the bottom surface of the weighing cavity and discharged out of the tank body;

step four: large-particle materials are discharged, the electric sliding block moves along the guide rail in a straight line to the right along the X-axis direction, so that the outer wall of the opening end of the screening groove can be separated from the inner wall of the clamping groove, then the motor A moves to drive the rotating shaft A to rotate, so that the screen plate can be changed into a horizontal state from a vertical state, and when the electric sliding block slides to the position above the vertical pipe B, the materials in the screening groove can slide into the vertical pipe B under the matching action of the motor A and then fall into the crushing cavity;

step five: crushing, wherein a crusher operates to drive a crushing shaft to rotate so as to drive crushing wheels to rotate, and at the same time, crushing operation can be carried out on materials under the action of mutual meshing of two crushing wheels, and the crushed materials can fall to the inner wall of the bottom surface of a crushing cavity and are discharged out of a tank body;

step six: maintenance, open the side door and can upwards sieve open end level under electric slide and motor A's cooperation effect, thereby rethread rotatory screw can break away from screen cloth and slot open end, and then can take out the screen cloth from inside the sieve and can dredge and maintain the screen cloth.

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

1. screening mechanism, at first put into the material along the pan feeding pipe, and the material landing to screening inslot portion under the effect of gravity, then be less than the material of screen cloth pore diameter under the screening effect of screen cloth can break away from screening groove and sieve and fall into standpipe A inside, thereby simultaneously drive pivot B through motor B operation and rotate and drive the sieve and vertically rotate, and then promote the material of screening inslot portion to carry out screening operation, the effectual realization this equipment has in time the function that promotes the screening in the powdered lubricant screening process for PVC, the powdered lubricant for PVC on the market has been solved because there is the poor condition of granule screening effect in the ubiquitous powder in the production use at present, thereby lead to the problem that the powdered lubricant for PVC screens speed and screening efficiency are lower in the production process, the effectual screening speed and the screening efficiency that have improved the powdered lubricant for PVC.

2. The utility model provides a weighing machine constructs, firstly, can transport the material after the screening to weighing cavity inside by standpipe A, and fall into weighing groove inside under the effect of gravity, then through weighing sensor operation can weigh the material of inslot portion and weigh the operation and weigh the inslot portion and detect weighing groove inside material weight qualified back, thereby at this moment by motor C operation drive pivot C rotates drive backup pad at weighing cavity inside vertical rotation, and then can drop weighing cavity bottom surface inner wall and discharge jar body with weighing inslot portion's material, the effectual equipment has realized can in time carry out quantitative weighing operation after the material screening, and the condition that the powdery lubricant for PVC needs the secondary to transport just can weigh the partial shipment after the screening has been avoided, the powdery lubricant for PVC on the market at present is because weighing after the screening basically in time in production process has been solved, thereby the powdery lubricant for PVC needs the secondary transport just can weigh the partial shipment problem after the screening, the effectual production speed that has improved the powdery lubricant for PVC.

3. Screening mechanism and crushing mechanism, at first, move along the guide rail straight line right-hand movement in X axis direction by electric slider, and then can break away from screening groove open end outer wall and draw-in groove inside wall, thereby then rotate through motor A operation drive pivot A and change the sieve from vertical state into the horizontality, when electric slider slides to standpipe B top position, at this moment can slide the inside material of screening groove to standpipe B and drop to crushing intracavity portion afterwards under motor A's cooperation effect, thereby drive crushing axle rotation by the rubbing crusher operation and drive crushing wheel rotation afterwards, and simultaneously can smash the operation to the material under the intermeshing of two crushing wheels, and the material after smashing can drop to crushing chamber bottom surface inner wall and discharge jar body, the effectual realization this equipment has in time clear away and carry out the function of secondary crushing to the material of screening, the problem that the powdery lubricant for PVC on the market can not in time utilize because most do not have in time to the material of screening, thereby the production and utilization rate for PVC is effectively improved.

4. Screening mechanism, at first open the side door and can upwards screen plate open end level under electric slider and motor A's cooperation effect, thereby rethread rotary screw can break away from screen cloth and slot open end, and then can take out the screen cloth from the screen plate is inside and can dredge and maintain the screen cloth, the effectual function that has realized this equipment has in time maintenance and maintenance in the powdered lubricant screening process for PVC, the powdered lubricant for PVC on having solved present market is because generally can not in time maintain and maintain the screen plate, thereby lead to the screening speed of equipment and the problem that efficiency can't be ensured, the effectual screening speed and the screening efficiency of guaranteeing equipment.

Drawings

FIG. 1 is a schematic diagram of the overall outer surface structure of a powder lubricant screening and packaging device for PVC and a using method thereof;

FIG. 2 is a schematic diagram of the whole cross-sectional structure of a powder lubricant screening and packaging device for PVC and a using method thereof;

FIG. 3 is a schematic diagram of a screening mechanism structure of a screening and sub-packaging device for a powder lubricant for PVC and a using method thereof;

FIG. 4 is a schematic diagram of a weighing mechanism structure of a powder lubricant screening and packaging device for PVC and a using method thereof;

FIG. 5 is a schematic diagram of a pulverizing mechanism of a powder lubricant screening and packaging device for PVC and a using method thereof;

FIG. 6 is a schematic view of the outer surface structure of a sieve plate of the screening and sub-packaging equipment for the powder lubricant for PVC and the use method thereof;

fig. 7 is a schematic diagram of a screen plate top view structure of a screening and sub-packaging device for a powder lubricant for PVC and a using method thereof.

In the figure: 1. a tank body; 2. a side door; 3. a feeding pipe; 4. a controller; 5. a screening cavity; 601. a guide rail; 602. an electric slide block; 603. a motor B; 604. a rotating shaft B; 605. a sieve plate; 606. a screening groove; 607. a motor A; 608. a rotating shaft A; 609. a slot; 610. a screen; 611. a screw; 7. a clamping groove; 801. a crushing shaft; 802. a pulverizing wheel; 803. a pulverizer; 901. a support plate; 902. a groove; 903. a weighing sensor; 904. a weighing plate; 905. a weighing tank; 906. a motor C; 907. a rotating shaft C; 10. a vertical pipe A; 11. a weighing cavity; 12. a vertical pipe B; 13. and a crushing cavity.

Detailed Description

The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.

As shown in fig. 1-7, a powder lubricant screening and packaging device for PVC and a using method thereof, comprising a tank body 1, a screening mechanism, a weighing mechanism and a crushing mechanism, wherein the screening cavity 5, the weighing cavity 11 and the crushing cavity 13 are arranged in the tank body 1, the weighing cavity 11 and the crushing cavity 13 are positioned below the screening cavity 5, the weighing cavity 11 and the crushing cavity 13 are arranged in parallel along a Y axis, the weighing cavity 11 is positioned at the left side of the crushing cavity 13, the weighing cavity 11 is communicated with the screening cavity 5 by a vertical pipe a10 arranged between the weighing cavity 11 and the screening cavity 5, the screening mechanism is arranged on the inner side wall of the screening cavity 5 by a vertical pipe B12 arranged between the crushing cavity 13 and the screening cavity 5, the weighing mechanism is arranged on the inner side wall of the weighing cavity 11, and the crushing mechanism is arranged on the inner side wall of the crushing cavity 13;

screening mechanism includes guide rail 601, electronic slider 602, motor B603, pivot B604, sieve 605, screening groove 606, motor A607, pivot A608, slot 609, screen cloth 610 and screw 611, screening chamber 5 inside wall is provided with guide rail 601, just guide rail 601 lateral wall sliding connection has can follow the gliding electronic slider 602 of X axle straight line, just electronic slider 602 inside is provided with motor A607, motor A607's output shaft is provided with the one end of pivot A608, just the other end and the motor B603 lateral wall fixed connection of pivot A608, wherein motor B603's output shaft is provided with the one end of pivot B604, just the other end and the sieve 605 right side outer wall fixed connection of pivot B604, screening groove 606 has been seted up to the sieve 605 left side outer wall, just screening groove 606 open end outer wall has been seted up slot 609, and slot 609 inside wall gomphosis is connected with screen cloth 610, through being less than screen cloth 610 while hole diameter's material can break away from screening groove 606 and inside and fall into inside motor B603, thereby drive sieve 605 through motor B604 and drive the inside that drives the sieve 605 and carry out the vertical operation of sieve 605 and carry out the screening operation through the sieve inside that rotates 604, thereby the inside that drives the sieve 605.

Specifically, the weighing mechanism comprises a supporting plate 901, a groove 902, a weighing sensor 903, a weighing plate 904, a weighing groove 905, a motor C906 and a rotating shaft C907, wherein the motor C906 is arranged on the inner side wall of a weighing cavity 11, one end of the rotating shaft C907 is arranged on an output shaft of the motor C906, the other end of the rotating shaft C907 is fixedly connected with the outer side wall of the supporting plate 901, the upper surface of the supporting plate 901 is provided with the groove 902 with an upward opening end, the inner wall of the bottom surface of the groove 902 is provided with the weighing sensor 903, the upper surface of the weighing sensor 903 is provided with the weighing plate 904, the weighing groove 905 with the upward opening end is formed in the upper surface of the weighing plate 904, screened materials can be transported into the weighing cavity 11 through a vertical pipe A10 and fall into the weighing groove 905 under the action of gravity, and then the materials in the weighing groove 905 can be weighed through the operation of the weighing sensor 903.

Specifically, the crushing mechanism comprises a crushing shaft 801, a crushing wheel 802 and a crusher 803, wherein the crusher 803 is arranged on the inner side wall of the crushing cavity 13, the output shaft of the crusher 803 is provided with one end of the crushing shaft 801, the other end of the crushing shaft 801 is fixedly connected with the crushing wheel 802, the crushing shaft 801 is driven to rotate through the operation of the crusher 803 so as to drive the crushing wheel 802 to rotate, and meanwhile, the crushing operation can be performed on materials under the action of the mutual meshing of the two crushing wheels 802.

Specifically, the outer wall of the left side of the tank body 1 is inserted with a feeding pipe 3, the outlet end of the feeding pipe 3 is provided with a clamping groove 7, the inner side wall of the clamping groove 7 is connected with the opening end of the screening groove 606 in a clamping manner, the outer wall of the right side of the tank body 1 is provided with a side door 2, and the electric sliding block 602 moves along the guide rail 601 to linearly move right in the X-axis direction, so that the outer wall of the opening end of the screening groove 606 can be separated from the inner side wall of the clamping groove 7.

Specifically, the upper surface of the screen 610 is screwed with one end of a screw 611, and the other end of the screw 611 extends into the screen 605, so that the screen 610 can be separated from the opening end of the slot 609 by rotating the screw 611, and the screen 610 can be removed from the screen 605 and the screen 610 can be dredged and maintained.

Specifically, the number of the screens 610 is plural, and the plurality of screens 610 are uniformly distributed on the inner side wall of the screening tank 606, so that the screening operation can be sufficiently performed on the material in the screening tank 606 by the plural number of the screens 610.

Specifically, the number of the pulverizer 803 and the number of the pulverizing wheels 802 are two, and the two pulverizing wheels 802 are in meshed connection, so that the secondary pulverizing operation of the materials can be completed through the meshed connection of the pulverizing wheels 802.

Specifically, the outer side wall of the tank body 1 is provided with a controller 4, and a signal input end of the controller 4 is electrically connected with a signal output end of an external power supply, so that the operation or disconnection of the controller 4 can be controlled by switching on/off the power supply.

Specifically, the signal output end of the controller 4 is electrically connected with the signal input ends of the electric slide block 602, the motor a607, the motor B603, the motor C906, the weighing sensor 903 and the pulverizer 803, and the controller 4 is controlled to operate so as to control the on/off and operation of the circuits of the electric slide block 602, the motor a607, the motor B603, the motor C906, the weighing sensor 903 and the pulverizer 803, so that the operation is convenient and the safety is excellent.

Specifically, the method comprises the following steps:

step one: screening, the materials are placed along the feeding pipe 3, the materials slide into the screening groove 606 under the action of gravity, then the materials smaller than the pore diameter of the screen 610 are separated from the screening groove 606 and the screen plate 605 and fall into the vertical pipe A10 under the screening action of the screen 610, and meanwhile, the motor B603 operates to drive the rotating shaft B604 to rotate so as to drive the screen plate 605 to vertically rotate, so that the screening operation of the materials in the screening groove 606 is promoted, and the equipment has the function of promoting screening in the screening process of the powder lubricant for PVC in time;

step two: weighing, namely, the vertical pipe A10 can transport the screened materials into the weighing cavity 11 and fall into the weighing groove 905 under the action of gravity, and then the weighing sensor 903 is operated to weigh the materials in the weighing groove 905, so that the device can timely perform quantitative weighing operation after screening the materials;

step three: after the weighing sensor 903 detects that the weight of the material in the weighing groove 905 is qualified, the motor C906 operates to drive the rotating shaft C907 to rotate so as to drive the supporting plate 901 to vertically rotate in the weighing cavity 11, so that the material in the weighing groove 905 can fall to the inner wall of the bottom surface of the weighing cavity 11 and be discharged out of the tank 1, and the situation that the PVC powder lubricant can be weighed and packaged only after being screened is avoided;

step four: large-particle materials are discharged, the electric slide block 602 moves along the guide rail 601 to linearly move right in the X-axis direction, so that the outer wall of the opening end of the screening groove 606 can be separated from the inner wall of the clamping groove 7, then the motor A607 moves to drive the rotating shaft A608 to rotate, so that the screen plate 605 can be changed into a horizontal state from a vertical state, when the electric slide block 602 slides to a position above the vertical pipe B12, the materials in the screening groove 606 can slide into the vertical pipe B12 under the matching action of the motor A607 and then fall into the crushing cavity 13, and the device has the function of timely removing the screened materials;

step five: crushing, wherein the crusher 803 operates to drive the crushing shaft 801 to rotate so as to drive the crushing wheels 802 to rotate, meanwhile, crushing operation can be carried out on materials under the action of mutual meshing of the two crushing wheels 802, and the crushed materials can fall to the inner wall of the bottom surface of the crushing cavity 13 and are discharged out of the tank body 1, so that the device has the function of secondarily crushing the screened materials;

step six: maintenance, open side door 2 and can be with screen plate 605 open end level upwards under the cooperation of electronic slider 602 and motor A607, rethread screw 611 thereby can break away from screen cloth 610 and slot 609 open end, and then can take out screen cloth 610 from screen plate 605 inside and can dredge and maintain screen cloth 610, even make this equipment have in time maintenance and maintenance's function in the powdered lubricant screening process for PVC.

The electronic components used in the invention are all general standard components or components known to the skilled person, and the structure and principle of the electronic components are all known to the skilled person through technical manuals or through routine experimental methods.

The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a powdered lubricant screening partial shipment equipment for PVC, includes jar body (1), screening mechanism, weighing mechanism and crushing mechanism, its characterized in that: screening cavities (5), weighing cavities (11) and crushing cavities (13) are formed in the tank body (1), the weighing cavities (11) and the crushing cavities (13) are located below the screening cavities (5), the weighing cavities (11) and the crushing cavities (13) are arranged in parallel along a Y axis, the weighing cavities (11) are located at the left side of the crushing cavities (13), a vertical pipe A (10) is arranged between the weighing cavities (11) and the screening cavities (5) and communicated, a vertical pipe B (12) is arranged between the crushing cavities (13) and the screening cavities (5) and communicated, screening mechanisms are arranged on the inner side walls of the screening cavities (5), weighing mechanisms are arranged on the inner side walls of the weighing cavities (11), and crushing mechanisms are arranged on the inner side walls of the crushing cavities (13);

the screening mechanism comprises a guide rail (601), an electric sliding block (602), a motor B (603), a rotating shaft B (604), a screen plate (605), a screening groove (606), a motor A (607), a rotating shaft A (608), a slot (609), a screen (610) and a screw (611), wherein the guide rail (601) is arranged on the inner side wall of the screening cavity (5), the outer side wall of the guide rail (601) is in sliding connection with the electric sliding block (602) which can linearly slide along the X axis, the motor A (607) is arranged in the electric sliding block (602), the output shaft of the motor A (607) is connected with one end of the rotating shaft A (608), the other end of the rotating shaft A (608) is fixedly connected with the outer side wall of the motor B (603), the other end of the rotating shaft B (604) is fixedly connected with the outer side wall of the screen plate (605), the left side outer wall of the screen groove (606) is provided with the screening groove, the opening end of the screening groove (606) is provided with the slot (609), and the inner side wall (609) is connected with the screen plate (610).

The weighing mechanism comprises a supporting plate (901), a groove (902), a weighing sensor (903), a weighing plate (904), a weighing groove (905), a motor C (906) and a rotating shaft C (907), wherein the motor C (906) is arranged on the inner side wall of a weighing cavity (11), one end of the rotating shaft C (907) is connected with an output shaft of the motor C (906), the other end of the rotating shaft C (907) is fixedly connected with the outer side wall of the supporting plate (901), the upper surface of the supporting plate (901) is provided with the groove (902) with an upward opening end, the inner wall of the bottom surface of the groove (902) is provided with the weighing sensor (903), the upper surface of the weighing sensor (903) is provided with the weighing plate (904), and the upper surface of the weighing plate (904) is provided with the weighing groove (905) with the upward opening end;

the crushing mechanism comprises a crushing shaft (801), a crushing wheel (802) and a crusher (803), wherein the crusher (803) is arranged on the inner side wall of the crushing cavity (13), one end of the crushing shaft (801) is arranged on an output shaft of the crusher (803), and the crushing wheel (802) is fixedly connected with the other end of the crushing shaft (801);

the novel screening tank is characterized in that a feeding pipe (3) is inserted into the left outer wall of the tank body (1), a clamping groove (7) is formed in the outlet end of the feeding pipe (3), the inner side wall of the clamping groove (7) is connected with the opening end of the screening groove (606) in a clamping mode, and a side door (2) is arranged on the right outer wall of the tank body (1).

2. The powder lubricant screening and packaging equipment for PVC according to claim 1, wherein: one end of a screw (611) is connected with the upper surface of the screen (610) in a threaded manner, and the other end of the screw (611) extends into the screen plate (605).

3. The powder lubricant screening and packaging equipment for PVC according to claim 1, wherein: the number of the screens (610) is a plurality, and the screens (610) are uniformly distributed on the inner side wall of the screening groove (606).

4. The powder lubricant screening and packaging equipment for PVC according to claim 1, wherein: the number of the pulverizer (803) and the number of the pulverizing wheels (802) are two, and the two pulverizing wheels (802) are connected in a meshed manner.

5. The powder lubricant screening and packaging equipment for PVC according to claim 1, wherein: the outer side wall of the tank body (1) is provided with a controller (4), and the signal input end of the controller (4) is electrically connected with the signal output end of an external power supply.

6. The powder lubricant screening and packaging equipment for PVC according to claim 5, wherein: the signal output end of the controller (4) is electrically connected with the signal input ends of the electric sliding block (602), the motor A (607), the motor B (603), the motor C (906), the weighing sensor (903) and the pulverizer (803).

7. A method of using a powder lubricant screening and packaging device for PVC according to any one of claims 1-6, wherein: the method comprises the following steps:

step one: screening, namely placing materials along a feeding pipe (3), sliding the materials into a screening groove (606) under the action of gravity, separating the materials smaller than the pore diameter of the screen (610) from the screening groove (606) and the screen plate (605) and falling into a vertical pipe A (10) under the screening action of the screen (610), and simultaneously driving a rotating shaft B (604) to rotate through a motor B (603) to drive the screen plate (605) to vertically rotate so as to promote the materials in the screening groove (606) to carry out screening operation;

step two: weighing, wherein the screened materials can be transported to the inside of the weighing cavity (11) by the vertical pipe A (10) and fall into the weighing groove (905) under the action of gravity, and then the materials in the weighing groove (905) can be weighed by the operation of the weighing sensor (903);

step three: after the weighing sensor (903) detects that the weight of the material in the weighing groove (905) is qualified, the motor C (906) operates to drive the rotating shaft C (907) to rotate so as to drive the supporting plate (901) to vertically rotate in the weighing cavity (11), and then the material in the weighing groove (905) can be dropped to the inner wall of the bottom surface of the weighing cavity (11) and discharged out of the tank body (1);

step four: large-particle materials are discharged, an electric sliding block (602) moves along a guide rail (601) in a straight line to the right in the X-axis direction, so that the outer wall of the opening end of a screening groove (606) can be separated from the inner wall of a clamping groove (7), then a motor A (607) moves to drive a rotating shaft A (608) to rotate, so that a screen plate (605) can be changed into a horizontal state from a vertical state, and when the electric sliding block (602) slides to a position above a vertical pipe B (12), the materials in the screening groove (606) can slide into the vertical pipe B (12) under the cooperation of the motor A (607) and then fall into a crushing cavity (13);

step five: crushing, wherein a crusher (803) operates to drive a crushing shaft (801) to rotate so as to drive crushing wheels (802) to rotate, meanwhile, crushing operation can be carried out on materials under the action of mutual meshing of the two crushing wheels (802), and the crushed materials can fall to the inner wall of the bottom surface of a crushing cavity (13) and are discharged out of a tank body (1);

step six: maintenance, open side door (2) and can upwards sieve (605) open end level under the cooperation effect of electronic slider (602) and motor A (607), thereby rethread rotary screw (611) can break away from screen cloth (610) and slot (609) open end, and then can take out screen cloth (610) from inside sieve (605) and can dredge and maintain screen cloth (610).

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