Device for removing iron in wood pulp

Abstract

The utility model provides a device for removing iron in wood pulp, which is characterized by comprising a feeding structure, a primary over-separation structure, a secondary separation structure and a collection structure, the feeding structure is arranged above the primary separation structure, the feeding structure is connected with the primary separation structure in a welding manner, and the secondary separation structure is connected with the collection structure in a welding manner. The first-stage feeding structure is arranged above the second-stage separation structure, the first-stage separation structure and the second-stage separation structure are connected in a welded mode, the collecting structure is arranged below the second-stage separation structure, and the second-stage separation structure and the collecting structure are connected in a welded mode. Due to the arrangement of the first-stage separation structure and the second-stage separation structure, the process of removing iron metal in wood pulp is more sufficient and thorough, and the problems that a traditional metal impurity removal process is complex, the impurity removal efficiency is low, and the impurity removal cost is high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wood pulp processing, in particular to a device for removing iron from wood pulp. Background Art

[0002] Wood pulp is a vital raw material, widely used in paper production, chemical production, food packaging, building materials, and many other applications. The most familiar use of wood pulp is in paper production, a major sector of the wood pulp industry, as wood pulp is one of the core raw materials for papermaking. Paper made from wood pulp can be used in books, newspapers, magazines, greeting cards, packaging, and plastic bags. Wood pulp paper exhibits excellent tear resistance, strength, and printability, advantages that other fiber materials struggle to match. During the wood pulp production process, numerous impurities often enter the pulp, affecting its quality. Furthermore, metal impurities are often introduced into the pulp during production within the pulping equipment. Iron filings can damage the screen drum during operation, reducing the screen's service life. Metal impurities can also significantly harm subsequent production and affect pulp quality. Therefore, metal impurities must be promptly removed.

[0003] At present, the Chinese utility model with the announcement number CN210583910U discloses a wood pulp filter, including a shell, a spacer ring is arranged in the shell, an upper filter cartridge and a lower filter cartridge are respectively arranged on the upper and lower parts of the spacer ring, filter holes are distributed on the outer walls of the lower filter cartridge and the upper filter cartridge, the filter hole diameter of the lower filter cartridge is larger than the filter hole diameter of the upper filter cartridge, a backflush pipe is arranged in the upper filter cartridge, and circumferentially distributed nozzles are distributed on the backflush pipe, a liquid inlet pipe is arranged below the spacer ring on the shell, a liquid discharge pipe is arranged on the upper part of the shell, an upper drain valve is arranged at the bottom of the lower filter cartridge, a total drain pipe is arranged at the bottom of the shell, and a total drain valve is arranged on the total drain pipe.

[0004] Existing wood pulp particle separators mainly use filters for separation, but this cleaning method has certain limitations. Some metal debris is easily washed away with the wood pulp under the scouring of water, and thus cannot be filtered out, reducing the separation effect. In current wood pulp production, the removal of metal impurities requires special detection equipment. A metal detector is used to detect the interior of the transmitted wood pulp. If there are metal impurities in the wood pulp, the entire metal-containing wood pulp part is marked and further impurities are removed. The metal impurity removal process is more complicated, the impurity removal efficiency is low, and the impurity removal cost is high. The existing device is not convenient for adsorbing and fixing iron chips, and it is not convenient to flush and discharge the iron chips after the wood chip pulp transmission is completed. The existing device is not convenient for fully adsorbing iron chips. Utility Model Content

[0005] Based on the above technical problems, the utility model provides a device for removing iron from wood pulp, which is characterized by including a feeding structure, a primary separation structure, a secondary separation structure, and a collecting structure. The feeding structure is arranged above the primary separation structure, and the feeding structure and the primary separation structure are connected by welding. The primary separation structure is arranged above the secondary separation structure, and the primary separation structure and the secondary separation structure are connected by welding. A collecting structure is arranged below the secondary separation structure, and the secondary separation structure and the collecting structure are connected by welding.

[0006] The feed structure consists of a feed end, a magnetizing plate, and a blower. The magnetizing plate is welded to one side of the feed end, and the blower is mounted on one side of the magnetizing plate. The feed end has a sloped bottom, a one-way door, and a space reserved for connecting to a conveyor belt. The feed end is made of an alloy with a non-stick coating. The magnetizing plate magnetizes the metal in the wood pulp, and the blower lifts the wood pulp after it passes through the magnetizing plate.

[0007] The primary separation structure consists of a primary separation chamber, a magnetic filter, an oscillating screen, a control gate, and a funnel. The primary separation chamber is fitted with a filter screen on its side, connected to the filter screen via a threaded nut. The primary separation chamber and the control gate are fitted with an oscillating screen and a control gate at its bottom. The oscillating screen is positioned above the control gate and connected to the oscillating screen and the control gate via a threaded nut. The funnel is positioned below the control gate. Two holes are defined in the side of the primary separation chamber, one of which is connected to the magnetic filter and the other to a collection structure. The bottom of the primary separation chamber is hollow, housing the control gate. The chamber is constructed from an alloy with a non-stick coating. The magnetic filter repel magnetism of the magnetized ferrous metal. The control gate is electrically operated and can be opened and closed. The oscillating screen is electrically operated and is used to vibrate and lift the wood pulp. The funnel is funnel-shaped and equipped with an electrically operated valve at its bottom.

[0008] The secondary separation structure consists of a secondary separation chamber, a rotating magnetic absorber, and a demagnetizer. A rotating magnetic absorber is provided inside the secondary separation chamber, and the secondary separation chamber and the rotating magnetic absorber are connected by a threaded nut. A demagnetizer is provided on one side of the secondary separation chamber, and the secondary separation chamber and the demagnetizer are connected by a threaded nut. The bottom of the secondary separation chamber is empty; the number of the rotating magnetic absorbers is 2, and the rotating magnetic absorber consists of a motor, a rotating shaft, and a magnetic plate. The output end of the motor is connected to the rotating shaft, and a number of electromagnetic plates are welded on the rotating shaft; the number of the demagnetizers is 2, and the demagnetizer is used to offset the magnetic effect of the magnetic plate and the magnetized iron metal.

[0009] The collection structure consists of a collection chamber, a metal collection box, a wood pulp collection box, and a collection pipe. The metal collection box and the wood pulp collection box are located at the bottom of the collection chamber, and the collection chamber is connected to the metal and wood pulp collection boxes. A collection pipe is installed on the side of the collection chamber, and the collection chamber and the collection pipe are connected by welding. The collection chamber is open at the top, and there are two partitions at the bottom of the collection chamber. A slide is installed at the bottom of the collection chamber. The metal collection box is equipped with a pulley at the bottom, and the metal collection box is a detachable structure. There are two metal collection boxes. The wood pulp collection box is equipped with a pulley at the bottom, and the wood pulp collection box is a detachable structure. There are two collection pipes.

[0010] The beneficial effects of the utility model are:

[0011] The utility model adds a feeding structure, which is provided with a feeding end. The bottom of the feeding end is set in a slope, so that the wood pulp can enter smoothly. A position for installing a conveyor belt is reserved on one side of the feeding end. When the wood pulp processing volume is too large, the conveyor belt can be connected to the feeding end to allow the wood pulp to enter, thereby achieving the benefits of saving time and effort.

[0012] The utility model adds a first-stage separation structure, which is provided with an oscillating filter screen, which can oscillate the wood pulp and iron metal and be blown up by the blower at the same time. It is also provided with a magnetic filter screen, which can filter out the magnetized iron metal, thereby realizing the first-stage separation of the iron metal and the wood pulp.

[0013] The utility model adds a secondary separation structure, which is provided with a rotating magnetic absorber and a demagnetizer. After the wood pulp flows out of the funnel sampler, it enters the secondary separation chamber, and the wood pulp and the magnetized iron metal both fall onto the rotating magnetic absorber. As the rotating magnetic absorber rotates, the non-magnetized wood pulp falls into the wood pulp collection box due to gravity, and the magnetized iron metal is adsorbed on the rotating magnetic absorber and rotates with the rotating magnetic absorber. When it rotates into the effective range of the demagnetizer, the magnetic field generated by the demagnetizer and the magnetic field generated by the magnetic absorber cancel each other out, the magnetism disappears, and the magnetized metal falls into the metal collection box, thereby realizing the secondary separation of the iron metal box and the wood pulp.

[0014] The collecting structure of the utility model is arranged as a detachable structure, which is convenient for timely utilization and processing of the collected iron metal box wood pulp in the next stage, thus saving time and having high flexibility.

[0015] The utility model adopts the arrangement of a primary separation structure and a secondary separation structure, so that the iron metal removal process in the wood pulp is more sufficient and thorough, and solves the problems of the traditional metal impurity removal process being complicated, the impurity removal efficiency being low, and the impurity removal cost being high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a device for removing iron from wood pulp according to the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of a primary separation device for removing iron from wood pulp according to the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of a secondary separation device for removing iron from wood pulp according to the present invention;

[0019] Figure 4 This is a schematic diagram of the collection structure of a device for removing iron from wood pulp in the utility model.

[0020] As shown in the figure, 1 is the feed end; 2 is the magnetization plate; 3 is the blower; 4 is the primary separation chamber; 5 is the magnetic filter; 6 is the oscillating screen; 7 is the control door; 8 is the funnel feeder; 9 is the secondary separation chamber; 10 is the rotating magnetic absorber; 11 is the demagnetizer; 12 is the metal collection box; 13 is the wood pulp collection box; 14 is the collection pipe. DETAILED DESCRIPTION

[0021] Example 1

[0022] The utility model provides a device for removing iron from wood pulp, characterized in that the feeding structure comprises a feeding end 1, a magnetizing plate 2, and a blower 3. The primary separation structure comprises a primary separation chamber 4, a magnetic filter 5, an oscillating screen 6, a control door 7, and a funnel feeder 8. The secondary separation structure comprises a secondary separation chamber 9, a rotating magnetic absorber 10, and a demagnetizer 11.

[0023] A magnetizing plate 2 is provided on one side of the feed end 1, and the feed end 1 and the magnetizing plate 2 are connected by welding. A blower 3 is provided on one side of the magnetizing plate 2, and the magnetizing plate 2 and the blower 3 are connected by a threaded nut. A filter screen is provided on the side of the primary separation chamber 4, and the primary separation chamber 4 and the filter screen are connected by a threaded nut. An oscillating screen 6 and a control door 7 are provided at the bottom of the primary separation chamber 4, and the primary separation chamber 4 and the oscillating screen 6 and the control door 7 are respectively connected by threaded nuts. The oscillating screen 6 is provided above the control door 7, and a funnel sampler 8 is provided below the control door 7, and the control door 7 and the funnel sampler 8 are connected by threads and nuts. A rotating magnet 10 is provided inside the secondary separation chamber 9, and the secondary separation chamber 9 and the rotating magnet 10 are connected by a threaded nut. A demagnetizer 11 is provided on one side of the secondary separation chamber 9, and the secondary separation chamber 9 and the demagnetizer 11 are connected by a threaded nut. A metal collecting box 12 and a wood pulp collecting box 13 are provided at the bottom of the collecting chamber, and the collecting chamber is connected to the metal collecting box 12 and the wood pulp collecting box 13. A collecting pipe 14 is provided on the side of the collecting chamber, and the collecting chamber and the collecting pipe 14 are connected by welding.

[0024] Example 2

[0025] When using the present invention, first, wood pulp containing iron metal impurities is put into the feed end 1. When the wood pulp passes through the magnetizing plate 2 above the feed end 1, the iron metal contained in the wood pulp is magnetized. The wood pulp passes through the blower 3 and is blown away by the blower 3. The blown wood pulp passes through the magnetic filter 5, flows through the collection pipe 14 and enters the wood pulp collection box 13. The wood pulp that is not blown away falls on the vibrating screen 6. After the vibration of the vibrating screen 6, the wood pulp is rebounded and blown away by the blower 3 again. Since the iron metal is magnetized, it has magnetism. Since the magnetic filter 5 and the magnetized iron metal have the same magnetism, the magnetic filter 5 and the magnetized iron metal repel each other, and the iron metal remains in the primary separation chamber 4. The wood pulp that is not blown up by the blower 3 due to weight reasons remains in the primary separation chamber 4, realizing the primary separation of the primary wood pulp and the iron metal. When the control door 7 is opened, the wood pulp enters the funnel sampler 8. Since the bottom of the funnel sampler 8 is controlled by an electric valve, when the electric gate is opened, the wood pulp passes through and enters the secondary separation chamber 9. The wood pulp falls onto the rotating magnetic absorber 10. The magnetized iron metal is adsorbed on the rotating magnetic absorber 10 and moves with the rotating magnetic absorber 10. The wood pulp falls onto the rotating magnetic absorber. Due to the rotation of the rotating magnetic absorber 10 and its own gravity, it falls and is collected by the wood pulp collecting box 13. The iron metal adsorbed on the rotating magnetic absorber 10 rotates with the rotating magnetic absorber 10. When the magnetic plate that adsorbs the iron metal rotates into the range of action of the demagnetization plate, the magnetic field generated by the demagnetization plate and the magnetic field generated by the magnetic absorption plate and the magnetized magnet cancel each other out, the magnetism disappears, the iron metal falls and is collected by the metal collecting box 12, realizing the secondary separation of the iron metal box and the wood pulp. The collection box can be pulled out and replaced, which is convenient for subsequent operations on the wood pulp and iron metal after the separation is completed.

[0026] The above shows and describes the basic principles, main features, and advantages of the present invention. The various components mentioned in the present invention are conventional technologies in the prior art. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for removing iron from wood pulp, characterized in that It includes a feeding structure, a primary separation structure, a secondary separation structure, and a collection structure. The feeding structure is arranged above the primary separation structure, the primary separation structure is arranged above the secondary separation structure, and a collection structure is arranged below the secondary separation structure.

2. The device for removing iron from wood pulp according to claim 1, characterized in that: The feeding structure consists of a feeding end, a magnetizing plate, and a blower. A magnetizing plate is provided on one side of the feeding end. The feeding end and the magnetizing plate are connected by welding. A blower is provided on one side of the magnetizing plate.

3. The device for removing iron from wood pulp according to claim 1, characterized in that: The first-level separation structure consists of a first-level separation chamber, a magnetic filter, an oscillating screen, a control door, and a funnel injector. A filter screen is provided on the side of the first-level separation chamber, and the first-level separation chamber is connected to the filter screen through a threaded nut. An oscillating screen and a control door are provided at the bottom of the first-level separation chamber. The oscillating screen is provided above the control door, and the first-level separation chamber is connected to the oscillating screen through a threaded nut. The first-level separation chamber is connected to the control door through a threaded nut, and a funnel injector is provided below the control door.

4. The device for removing iron from wood pulp according to claim 1, characterized in that: The secondary separation structure consists of a secondary separation chamber, a rotating magnetic absorber, and a demagnetizer. A rotating magnetic absorber is provided inside the secondary separation chamber, and the secondary separation chamber and the rotating magnetic absorber are connected by a threaded nut. A demagnetizer is provided on one side of the secondary separation chamber, and the secondary separation chamber and the demagnetizer are connected by a threaded nut.

5. The device for removing iron from wood pulp according to claim 1, characterized in that: The collection structure consists of a collection chamber, a metal collection box, a wood pulp collection box, and a collection pipe. The metal collection box and the wood pulp collection box are arranged at the bottom of the collection chamber. The collection chamber is connected to the metal collection box and the wood pulp collection box. A collection pipe is arranged on the side of the collection chamber. The collection chamber and the collection pipe are connected by welding.

6. The device for removing iron from wood pulp according to claim 2, characterized in that: The bottom of the feed end is a sloped structure, the feed end is provided with a one-way door, a position for connecting a conveyor belt is reserved at the feed end, and the feed end is made of an alloy material containing a non-stick coating.

7. The device for removing iron from wood pulp according to claim 3, characterized in that: Two holes are provided on the side of the first-level separation chamber, one side of the hole is connected to the magnetic filter, and the other side of the hole is set as a collection structure. The bottom of the first-level separation chamber is empty, and the material of the first-level separation chamber is an alloy containing a non-stick coating; the control door is an electric control door; the oscillating screen is an electric oscillating screen; the funnel injector is funnel-shaped, and an electric valve is provided at the bottom.

8. The device for removing iron from wood pulp according to claim 4, characterized in that: The bottom of the secondary separation chamber is empty; the number of the rotating magnetic absorbers is 2, and the rotating magnetic absorber is composed of a motor, a rotating shaft, and a magnetic absorption plate. The output end of the motor is connected to the rotating shaft, and several electromagnetic absorption plates are welded on the rotating shaft; the number of the demagnetizers is 2.

9. The device for removing iron from wood pulp according to claim 5, characterized in that: The collecting chamber is open at the top, and a partition is provided at the bottom of the collecting chamber, and the number of the partitions is 2. A slide is provided at the bottom of the collecting chamber, and a pulley is provided at the bottom of the metal collecting box, and the metal collecting box is a detachable structure, and the number of the metal collecting boxes is 2; a pulley is provided at the bottom of the wood pulp collecting box, and the wood pulp collecting box is a detachable structure; the number of the collecting pipes is 2.

10. The device for removing iron from wood pulp according to claim 1, characterized in that: The feeding structure is connected to the primary separation structure by welding, the primary separation structure is connected to the secondary separation structure by welding, and the secondary separation structure is connected to the collection structure by welding.

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