A washing device for chemical plastic materials

Abstract

The present invention discloses a washing device applied to chemical plastic materials, including an air source blower, a feeding device, an air delivery pipe, a feed pipe, a silo, and a silo discharge valve. One end of the air delivery pipe is connected to the output end of the air source blower, and the other end is connected to the feed port of the feed pipe. The feeding device is installed on the air delivery pipe and communicates with the air delivery pipe. The silo discharge valve is installed at the bottom of the silo. An electrostatic eliminator is sleeved above the feed pipe, and a tank body is provided below the electrostatic eliminator. The electrostatic eliminator and the bottom of the feed pipe both extend to the inside of the tank body. The present invention eliminates static electricity generated during the transportation of plastic particles by an electrostatic eliminator, prevents the occurrence of dust explosion, improves the safety of workers at work, separates plastic materials from dust by an elutriator, thereby achieving a cleaning effect, reducing production costs, and improving product quality.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical equipment, and in particular relates to a washing device applied to chemical plastic materials. Background Art

[0002] In the production process of polyolefin products and similar engineering plastic raw materials, the products need to be made into granules or slices. In the production process of making granules or slices, a very important link is to convey the products produced by the granulation or slicing equipment to the finished product silo or mixed silo by air flow for storage and transportation. During the air flow conveying process, friction and collision will occur between the plastic material and the gas conveying pipeline, resulting in static electricity, dust, wire drawing and other phenomena. The combination of static electricity and dust is prone to dust explosion, which poses a great safety hazard. The safety of the staff cannot be guaranteed. The appearance of wire drawing will reduce the quality of the product and affect the yield of downstream products. Qualified plastic materials need to be cleaned with special equipment, which greatly increases the production cost. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a washing device for chemical plastic materials. The static electricity generated during the transportation of plastic particles is eliminated by an electrostatic eliminator to prevent the occurrence of dust explosions, thereby improving the safety of workers at work. The plastic material and dust are separated by the washing device, thereby achieving a cleaning effect, reducing production costs and improving product quality.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A washing device for chemical plastic materials, comprising an air source blower, a feeding device, an air delivery pipeline, a feed pipeline, a silo, and a silo discharge valve, wherein one end of the air delivery pipeline is connected to the output end of the air source blower, and the other end is connected to the feed port of the feed pipeline, the feeding device is installed on the air delivery pipeline and communicates with the air delivery pipeline, the silo discharge valve is installed at the bottom of the silo, an electrostatic eliminator is sleeved above the feed pipeline, a tank body is provided below the electrostatic eliminator, the electrostatic eliminator and the bottom end of the feed pipeline both extend into the tank body, the electrostatic eliminator is installed on the top of the tank body, the electrostatic eliminator is composed of multiple groups of coils and connected to an external DC power supply, and a magnetic field is generated inside the feed pipeline when the coils are energized, and the charged plastic materials and airflow are The fluid generates electrons with opposite charges to its own through the magnetic field, neutralizing the charges of the plastic material and dust, thereby eliminating static electricity. A dust exhaust pipe is installed on one side above the tank body, and the dust exhaust pipe is connected to the tank body. A scrubber is provided at the bottom of the tank body, and a gap is left between the scrubber and the bottom of the feed pipe. An air intake pipe is installed on one side of the bottom of the tank body, one end of the air intake pipe passes through the tank body and is connected to the scrubber, and the other end is connected to the negative pressure fan through a pipe. The gas generated by the operation of the negative pressure fan enters the scrubber through the air intake pipe, and the plastic material falls onto the surface of the scrubber through the feed pipe, and the plastic material and the dust are separated by the scrubber, thereby achieving a cleaning effect. A discharge valve is installed below the tank body, and the silo is arranged at the bottom of the tank body.

[0006] Preferably, the tank body includes a first cover body, a cylinder, and a second cover body. The dust exhaust duct is installed on one side of the first cover body, and the air intake duct is installed on one side of the second cover body. The air intake duct and the dust exhaust duct are located on different sides of the tank body, which is beneficial for processing dusty plastic materials. The first cover body and the second cover body are respectively located at the top and bottom of the cylinder. The first cover body and the cylinder, as well as the cylinder and the second cover body, are connected by flange bolts, which facilitates the installation and disassembly of the tank body as a whole, is beneficial for the installation of equipment inside the tank body, and improves work efficiency.

[0007] Preferably, the scrubber includes a third cover body and a cylinder body, the third cover body is installed above the cylinder body and is an integrated structure, a plurality of through holes are opened on the top of the third cover body, an air intake pipe is connected to the cylinder body, and the gas generated by the operation of the negative pressure fan enters the scrubber through the air intake pipe, and the gas is discharged upward through the through holes. After the plastic material falls on the third cover body, the dust attached to the surface of the plastic material is blown up, completing the separation of the plastic material and the dust, thereby achieving a cleaning effect, reducing production costs, and improving the quality of the plastic material.

[0008] Preferably, the diameter of the through hole is smaller than the diameter of the plastic material, so as to prevent the plastic material from entering into the elutriator through the through hole and affecting the normal operation of the elutriator.

[0009] Preferably, the bottom of the feed pipe is trumpet-shaped, which enlarges the falling area of ​​the plastic material, facilitates the plastic material to fall onto the elutriator, and improves the working efficiency of the elutriation.

[0010] Preferably, the first cover body and the second cover body are both in a frustum shape, which is convenient for collecting dust and plastic materials and improves the working efficiency of the device.

[0011] Preferably, the third cover body is conical in shape, which increases the contact area between the plastic material and the third cover body, and the cylinder body is truncated cone-shaped, which limits the gas flow direction and facilitates the gas to flow upward after entering the elutriator, thereby accelerating the gas flow speed and improving the overall working efficiency of the elutriator.

[0012] The beneficial effects of the present invention are:

[0013] 1) The static electricity generated during the transportation of plastic materials is eliminated by the static eliminator to prevent the occurrence of dust explosion and improve the safety of workers at work. The plastic materials and dust are separated by the elutriator to achieve the cleaning effect, reduce production costs and improve product quality.

[0014] 2) The tank body includes a first cover body, a cylinder, and a second cover body. The dust exhaust duct is installed on one side of the first cover body, and the air intake duct is installed on one side of the second cover body. The air intake duct and the dust exhaust duct are located on different sides of the tank body, which is beneficial to the processing of dusty plastic materials. The first cover body and the second cover body are respectively located at the top and bottom of the cylinder. The first cover body and the cylinder, and the cylinder and the second cover body are connected by flange bolts, which is convenient for the installation and disassembly of the entire tank body, is beneficial to the installation of equipment inside the tank body, and improves work efficiency.

[0015] 3) The scrubber includes a third cover body and a cylinder body. The third cover body is installed above the cylinder body and is an integrated structure. A plurality of through holes are opened on the top of the third cover body. The air inlet pipe is connected to the cylinder body. The gas generated by the negative pressure fan enters the scrubber through the air inlet pipe, and the gas is discharged upward through the through holes. After the plastic material falls on the third cover body, the dust attached to the surface of the plastic material is blown up, completing the separation of the plastic material and the dust, thereby achieving the cleaning effect, reducing the production cost, and improving the quality of the plastic material.

[0016] 4) The bottom of the feed pipe is trumpet-shaped, which expands the falling area of ​​the plastic material, facilitates the plastic material to fall onto the elutriator, and improves the working efficiency of the elutriation.

[0017] 5) Both the first cover and the second cover are in a frustum shape, which is convenient for collecting dust and plastic materials and improving the working efficiency of the device.

[0018] 6) The third cover is conical in shape, which increases the contact area between the plastic material and the third cover. The cylinder is truncated cone-shaped, which limits the gas flow direction and facilitates the gas to flow upward after entering the elutriator, thereby accelerating the gas flow speed and improving the overall working efficiency of the elutriator.

[0019] 7) The diameter of the through hole is smaller than the diameter of the plastic material, so as to prevent the plastic material from entering the elutriator through the through hole and affecting the normal operation of the elutriator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 The present invention is a schematic diagram of the structure of a washing device applied to chemical plastic materials.

[0021] Attached Figure 2 The present invention is a schematic diagram of the internal structure of a tank in a washing device for chemical plastic materials.

[0022] Attached Figure 3 The invention discloses a schematic diagram of the structure of an elutriator in an elutriation device for chemical plastic materials.

[0023] Attached Figure 4 The present invention is a schematic diagram of the working principle of a static eliminator in a washing device for chemical plastic materials.

[0024] In the figure: 1. air source fan; 2. feeding device; 3. material gas conveying pipeline; 4. feeding pipeline; 5. static eliminator; 6. first cover body; 7. cylinder; 8. second cover body; 9. dust exhaust pipeline; 10. air intake pipeline; 11. negative pressure fan; 12. discharge valve; 13. silo; 14. silo discharge valve; 15. scrubber; 151. third cover body; 1511. through hole; 152. cylinder. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-4 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] A washing device for chemical plastic materials, comprising an air source blower 1, a feeding device 2, an air delivery pipe 3, a feed pipe 4, a silo 13, and a silo discharge valve 14. One end of the air delivery pipe 3 is connected to the output end of the air source blower 1, and the other end is connected to the feed port of the feed pipe 4. The feeding device 2 is installed on the air delivery pipe 3 and communicates with the air delivery pipe 3. The silo discharge valve 14 is installed at the bottom of the silo 13. An electrostatic eliminator 5 is sleeved on the top of the feed pipe 4. A tank body is provided below the electrostatic eliminator 5. The electrostatic eliminator 5 and the bottom end of the feed pipe 4 both extend into the inside of the tank body. The bottom of the feed pipe 4 is trumpet-shaped, which expands the falling area of ​​the plastic material, facilitates the plastic material to fall onto the washing device 15, and improves the washing work efficiency. The electrostatic eliminator 5 is installed on the top of the tank body. The electrostatic eliminator 5 is composed of multiple groups of coils and is connected to an external DC power supply. The coils are connected to the silo 13. After electrification, a magnetic field is generated inside the feed pipe 4, and the charged plastic material and air flow fluid generate electrons with opposite charges to their own through the magnetic field, neutralizing the charges of the plastic material and dust, thereby eliminating static electricity. A dust outlet pipe 9 is installed on one side above the tank body, and the dust outlet pipe 9 is connected to the tank body. A scrubber 15 is provided at the bottom of the tank body, and a gap is left between the scrubber 15 and the bottom of the feed pipe 4. An air intake pipe 10 is installed on one side of the bottom of the tank body, and one end of the air intake pipe 10 passes through the tank body and is connected to the scrubber 15, and the other end is connected to the negative pressure fan 11 through a pipe. The gas generated by the operation of the negative pressure fan 11 enters the scrubber 15 through the air intake pipe 10, and the plastic material falls onto the surface of the scrubber 15 via the feed pipe 4, and the plastic material and the dust are separated by the scrubber 15, thereby achieving a cleaning effect. A discharge valve 12 is installed below the tank body, and the silo 13 is arranged at the bottom of the tank body.

[0028] The tank body includes a first cover body 6, a cylinder 7, and a second cover body 8. The dust exhaust pipe 9 is installed on one side of the first cover body 6, and the air intake pipe 10 is installed on one side of the second cover body 8. The air intake pipe 10 and the dust exhaust pipe 9 are located on different sides of the tank body, which is beneficial to the processing of dusty plastic materials. The first cover body 6 and the second cover body 8 are respectively located at the top and bottom of the cylinder 7. The first cover body 6 and the second cover body 8 are both truncated cone-shaped, which is convenient for collecting dust and plastic materials and improving the working efficiency of the device. The first cover body 6 and the cylinder 7, as well as the cylinder 7 and the second cover body 8 are connected by flange bolts, which is convenient for the installation and disassembly of the entire tank body, is beneficial for the installation of equipment inside the tank body, and improves the working efficiency.

[0029] The elutriator 15 includes a third cover 151 and a cylinder 152. The third cover 151 is installed above the cylinder 152 and is an integrated structure. A plurality of through holes 1511 are provided on the top of the third cover 151. The diameter of the through holes 1511 is smaller than the diameter of the plastic material to prevent the plastic material from entering the elutriator 15 through the through holes 1511 and affecting the normal operation of the elutriator 15. The air duct 10 is connected to the cylinder 152. The gas generated by the negative pressure fan 11 enters the elutriator 15 through the air inlet duct 10. The gas passes through the through holes. 1511 is discharged upward, and after the plastic material falls on the third cover body 151, the dust attached to the surface of the plastic material is blown up, completing the separation of the plastic material and the dust, thereby achieving a cleaning effect, reducing production costs, and improving the quality of the plastic material. The third cover body 151 is conical in shape, which increases the contact area between the plastic material and the third cover body 151. The cylinder body 152 is truncated cone in shape, which limits the gas flow direction and facilitates the gas to flow upward after entering the scrubber 15, thereby accelerating the gas flow speed and improving the overall working efficiency of the scrubber 15.

[0030] The invention discloses an elutriation device for chemical plastic materials, and the working process thereof is as follows: the plastic material enters into the material gas conveying pipeline through the feeding device, and the plastic material is conveyed to the feeding pipeline under the action of the airflow of the air source fan. At this time, the static eliminator has been powered on to generate a magnetic field inside the feeding pipeline. The charged particles and the airflow fluid generate electrons with the opposite charge to themselves through the magnetic field, and the charge of the plastic material and the dust is neutralized, thereby eliminating the static electricity. The plastic material after the static electricity is eliminated falls into the elutriation device, and the gas generated by the negative pressure fan enters into the elutriation device through the air intake pipeline and is discharged upward through the through hole. After the plastic material falls onto the third cover body, the dust attached to the surface of the plastic material is blown up, and the separation of the plastic material and the dust is completed. The dust moves upward along the tank body under the action of the gas, and is finally discharged through the dust outlet pipeline, while the clean plastic material moves downward under the action of gravity and enters the silo through the discharge valve. When the plastic material reaches a certain material level or time in the silo, it is discharged or packaged by the silo discharge valve.

[0031] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A washing device for chemical plastic materials, comprising an air source blower, a feeding device, an air delivery pipeline, a feed pipeline, a silo, and a silo discharge valve, wherein one end of the air delivery pipeline is connected to the output end of the air source blower, and the other end is connected to the feed inlet of the feed pipeline, the feeding device is installed on the air delivery pipeline and communicated with the air delivery pipeline, and the silo discharge valve is installed at the bottom of the silo, characterized in that: An electrostatic eliminator is sleeved on the top of the feed pipe, and a tank body is provided below the electrostatic eliminator. The electrostatic eliminator and the bottom of the feed pipe both extend into the inside of the tank body. The electrostatic eliminator is installed on the top of the tank body. The electrostatic eliminator is composed of multiple sets of coils and is connected to an external DC power supply. A dust outlet pipe is installed on one side above the tank body, and the dust outlet pipe is connected to the tank body. An elutriator is provided below the inside of the tank body, and a gap is left between the elutriator and the bottom of the feed pipe. An air intake pipe is installed on one side of the bottom of the tank body, and one end of the air intake pipe passes through the tank body and is connected to the elutriator, and the other end is connected to the negative pressure fan through a pipe. A discharge valve is installed below the tank body, and the silo is provided at the bottom of the tank body. The tank body includes a first cover body, a cylinder, and a second cover body. The dust exhaust pipe is installed on one side of the first cover body, and the air intake pipe is installed on one side of the second cover body. The first cover body and the second cover body are respectively located at the top and the bottom of the cylinder. The first cover body and the cylinder, and the cylinder and the second cover body are connected by flange bolts. The scrubber includes a third cover body and a cylinder. The third cover body is installed above the cylinder and is an integrated structure. A plurality of through holes are opened on the top of the third cover body, and the air intake pipe is connected to the cylinder. The third cover body is conical in shape, and the cylinder is truncated cone in shape.

2. The washing device for chemical plastic materials according to claim 1, characterized in that: The air inlet duct and the dust outlet duct are located on different sides of the tank body.

3. The washing device for chemical plastic materials according to claim 1, characterized in that: The diameter of the through hole is smaller than the diameter of the plastic material.

4. The washing device for chemical plastic materials according to claim 1, characterized in that: The bottom of the feeding pipe is in a trumpet shape.

5. The washing device for chemical plastic materials according to claim 1, characterized in that: The first cover body and the second cover body are both in a truncated cone shape.

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