Wastewater multi-stage filtering device for papermaking

Abstract

The utility model discloses a papermaking wastewater multistage filtering device which comprises a filtering box, a conveying cylinder is transversely arranged in the filtering box, one end of the conveying cylinder penetrates out of the filtering box and is provided with an opening communicated with a filter pressing box, a conveying device is arranged in the conveying cylinder, the outer side of the conveying cylinder is sleeved with a filtering part, and a slag inlet is formed in the top of the conveying cylinder; the filtering part comprises two lantern rings arranged on the outer side of the conveying cylinder in a sleeving mode, a plurality of fishing plates are evenly arranged between the two lantern rings and arranged along the radius of the section of the filtering box, each fishing plate is provided with a scraping assembly, one lantern ring is sleeved with a second gear, the second gear is meshed with the first gear, and the second gear is meshed with the second gear. The center of the first gear is connected with the output end of the first motor penetrating the side wall of the filter box. According to the utility model, by arranging the rotatable filtering part, suspended matters in the papermaking wastewater are fished and transferred into the filter pressing box for filter pressing, so that the moisture of the filtered suspended matters is further reduced, and the subsequent collection and transportation cost of the filtered suspended matters is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater multi-stage filtration, in particular to a wastewater multi-stage filtration device for papermaking. Background Art

[0002] A large amount of wastewater is generated in the papermaking process, and the wastewater contains a large amount of suspended matter. In order to reduce the large amount of wastewater generated in the papermaking process and improve the recycling rate of water, the wastewater generated needs to be filtered at multiple levels to recover the fibers and suspended matter in the wastewater. Existing filtering devices mostly use multi-layer filter plates for simple filtration. During the filtration process, suspended matter may adhere to the filter plates and affect the filtration effect, and need to be removed regularly. At the same time, the filtered residue also contains water. If this part of water is not removed, it will increase the collection and transportation costs of the subsequent filtered residue. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a multi-stage filtering device for papermaking wastewater.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] The multi-stage filtration device for papermaking wastewater described in the technical solution comprises a filter box, a conveying cylinder is horizontally arranged inside the filter box, one end of the conveying cylinder passes through the filter box and is provided with an opening at the end to communicate with the filter press box, a conveying device is arranged inside the conveying cylinder, a filter component is sleeved on the outer side of the conveying cylinder, and a slag inlet is arranged on the top of the conveying cylinder;

[0006] The filtering component includes two rings sleeved on the outside of the conveying cylinder, a plurality of salvage plates are evenly arranged between the two rings, and the salvage plates are arranged along the radius of the cross section of the filter box, and a scraping assembly is provided on each salvage plate, a second gear is sleeved on the outside of one of the rings, the second gear is meshed with the first gear, and the center of the first gear is connected to the output end of the first motor penetrating the side wall of the filter box.

[0007] In the above technical solution, preferably, the scraping assembly includes two sliders, the two sliders are respectively installed in a slide groove, the two slide grooves are respectively arranged on both sides of the salvage plate, and the slide groove is perpendicular to the conveying tube, and a scraping strip is provided between the two sliders, and the scraping strip is attached to the surface of the salvage plate.

[0008] In the above technical solution, preferably, the surface of the salvage plate is mesh-shaped.

[0009] In the above technical solution, preferably, the conveying device includes an auger arranged along the conveying cylinder, one end of the auger penetrates the side wall of the filter box and is connected to the output end of the second motor, and the other end is arranged on the wall of the conveying cylinder.

[0010] In the above technical solution, preferably, a cylinder is provided on the top of the filter press box, the output end of the cylinder is connected to the upper end of the telescopic rod, the lower end of the telescopic rod passes through the top of the compression box and is connected to the top of the pressure plate, a filter plate is provided at the lower part of the filter press box, a slag outlet is provided on the side wall of the filter press box on the upper side of the filter plate, and a water outlet with a valve is provided at the bottom of the filter press box.

[0011] In the above technical solution, preferably, the width of the slag inlet is consistent with the distance between two salvage plates close to one side of the conveying tube, and the length of the slag inlet is consistent with the length of the salvage plates.

[0012] In the above technical solution, preferably, a water inlet and outlet with a valve is provided at the bottom of the filter box.

[0013] Compared with the prior art, the multi-stage filtration device for papermaking wastewater provided by the utility model has the following beneficial effects:

[0014] The utility model provides a rotatable filtering component to salvage the suspended matter in the papermaking wastewater, and then transfers it to the filter press box for filtration, thereby further reducing the moisture content of the filtered suspended matter, so that the wastewater can be reused to the greatest extent and the subsequent collection and transportation costs of the filtered suspended matter are reduced; by arranging a scraping component on the salvage plate, the salvage plate can maintain a high-efficiency filtration process, thereby improving the filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the multi-stage filtering device of the utility model;

[0016] Figure 2 It is a cross-sectional view of the filter box of the utility model;

[0017] Figure 3 It is a schematic diagram of the filter component arrangement of the utility model;

[0018] Figure 4 yes Figure 1 Schematic diagram of part A;

[0019] In the figure: 1-filter box, 2-transmission cylinder, 201-slag inlet, 3-filter component, 301-first gear, 302-second gear, 303-first motor, 304-ring, 305-salvage plate, 4-transmission device, 401-second motor, 402-auger, 5-filter press box, 6-cylinder, 7-telescopic rod, 8-pressing plate, 9-scraping assembly, 901-chute, 902-scraping bar, 903-slider, 10-water inlet and outlet, 11-slag outlet, 12-water outlet, 13-filter plate. DETAILED DESCRIPTION

[0020] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0023] See also Figures 1 to 4 The utility model provides a multi-stage filtration device for papermaking wastewater, including a filter box 1, a conveying cylinder 2 is horizontally arranged inside the filter box 1, one end of the conveying cylinder 2 passes through the filter box 1 and is provided with an opening at the end to communicate with the filter press box 5, a conveying device 4 is arranged inside the conveying cylinder 2, a filter component 3 is sleeved on the outside of the conveying cylinder 2, and a slag inlet 201 is arranged on the top of the conveying cylinder 2; the filter component 3 includes two sleeves 304 sleeved on the outside of the conveying cylinder 2, and a plurality of salvage plates 305 are evenly arranged between the two sleeves 304, the surface of the salvage plate 305 is mesh-shaped, and the salvage plate 305 is arranged along the cross-sectional radius of the filter box 1, such as Figure 2As shown, each salvage plate 305 is provided with a scraping assembly 9, wherein a second gear 302 is sleeved on the outer side of a collar 304, the second gear 302 is meshed with the first gear 301, the center of the first gear 301 is connected to the output end of the first motor 303 penetrating the side wall of the filter box 1, and the bottom of the filter box 1 is provided with a water inlet and outlet 10 with a valve. Open the valve of the water inlet and outlet 10, and the wastewater to be filtered enters the filter box 1 from the water inlet and outlet 10. When the liquid level reaches about half of the filter box 1, close the valve to stop the water from entering, turn on the first motor 303, and the first motor 303 drives the first gear 301 to rotate. Under the meshing action, the first gear 301 drives the second gear 302 to rotate, and the second gear 302 drives the collar 304 to rotate, thereby driving the connected salvage plate 305 to rotate around the conveying cylinder 2 to salvage and filter the suspended matter in the wastewater. During the salvage and filtration process, the salvage plate 305 needs to be kept with the side of the scraper assembly 9 facing upwards when it is turned from the wastewater to the top of the conveying cylinder 2.

[0024] In order to better implement this utility model, refer to Figure 1 and Figure 4 In one embodiment, the scraping assembly 9 includes two sliders 903, the two sliders 903 are respectively installed in a slide 901, the two slides 901 are respectively arranged on both sides of the salvage plate 305, and the slide 901 is perpendicular to the conveying cylinder 2, and a scraping bar 902 is arranged between the two sliders 903, and the scraping bar 902 is attached to the surface of the salvage plate 305. When the salvage plate 305 moves to the top of the conveying cylinder 2, the slider 903 moves downward along the slide 901 under the action of its own gravity, driving the scraping bar 902 between them to scrape the suspended matter attached to the surface of the salvage plate 305, so that the suspended matter falls into the conveying cylinder 2 through the slag inlet 201.

[0025] In order to better implement this utility model, refer to Figure 1 In one embodiment, the conveying device 4 includes an auger 402 arranged along the conveying cylinder 2, one end of the auger 402 penetrates the side wall of the filter box 1 and is connected to the output end of the second motor 401, and the other end is arranged on the wall of the conveying cylinder 2. When filtering, the second motor 401 is turned on to drive the auger 402 to rotate, and the suspended matter entering the conveying cylinder 2 is conveyed to the filter press box 5 by the auger 402.

[0026] In order to better implement this utility model, refer to Figure 1In one embodiment, a cylinder 6 is provided on the top of the filter press box 5, and the output end of the cylinder 6 is connected to the upper end of the telescopic rod 7, and the lower end of the telescopic rod 7 passes through the top of the compression box 5 and is connected to the top of the pressing plate 8. A filter plate 13 is provided at the lower part of the filter press box 5, and a slag outlet 11 is provided on the side wall of the filter press box 5 on the upper side of the filter plate 13, and a water outlet 12 with a valve is provided at the bottom of the filter press box 5. The cylinder 6 drives the telescopic rod 7 to move downward, and the telescopic rod 7 drives the pressing plate 8 to move downward, and the suspended matter on the surface of the filter plate 13 is filtered, and the valve on the water outlet 12 is opened, and the suspended matter rotates and the wastewater flows out from the water outlet 12, and the suspended matter impurities left on the filter plate 13 after the filtration will be discharged from the slag outlet 11.

[0027] In order to better implement this utility model, refer to Figure 2 and Figure 3 In one embodiment, the width of the slag inlet 201 is consistent with the distance between two salvage plates 305 close to one side of the conveying tube 2 , and the length of the slag inlet 201 is consistent with the length of the salvage plates 305 .

[0028] Based on the above-mentioned multi-stage filtration device for papermaking wastewater, its working principle is as follows:

[0029] Open the valves of the water inlet and outlet 10, and the wastewater to be filtered enters the filter box 1 from the water inlet and outlet 10. When the water level reaches the half position of the filter box 1, close the valve to stop the water from entering, and open the first motor 303 and the second motor 401. The first motor 303 drives the first gear 301 to rotate, and the first gear 301 drives the second gear 302 to rotate. The second gear 302 drives the connected ring 304 to rotate, and the ring 304 drives the salvage plate 305 to rotate. At the same time, the salvage plate 305 drives another ring 304 to assist in rotation. During the rotation of the salvage plate 305, the suspended matter in the wastewater is gradually salvaged. When the salvage plate 305 is located in the water, the scraper bar 902 arranged thereon is located on the side away from the conveying tube 2. When the salvage plate 305 gradually rotates upward During the movement, the scraper bar 902 and the slider 903 move downward along the slide 901 under their own gravity, gradually approaching the conveying cylinder 2, so that the scraper bar 902 scrapes off the suspended matter attached to the surface of the salvage plate 305, and the suspended matter falls into the conveying cylinder 2 from the slag inlet 201, and is transported to the filter press box 5 by the auger 402 driven by the second motor 401, and falls on the surface of the filter plate 13, and then the cylinder 6 is started, and the cylinder 6 drives the telescopic rod 7 to extend downward, and drives the pressing plate 8 to gradually approach the filter plate 13, and the suspended matter on the surface of the filter plate 13 is pressed and filtered. When the pressure filter is pressed, the valve at the water outlet 12 is opened, and the part of the wastewater will be discharged from the water outlet 12. After the pressure filter is completed, the pressing plate 8 is raised, and the sealing plate at the slag outlet 11 is opened to take out the filter residue. After the filter box 1 completes the filtration, the valve at the water inlet and outlet 10 is opened, and the filtered wastewater will be discharged from the water inlet and outlet 10.

[0030] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0031] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A multi-stage filtration device for papermaking wastewater, It is characterized in that It comprises a filter box (1), a conveying cylinder (2) is horizontally arranged inside the filter box (1), one end of the conveying cylinder (2) passes through the filter box (1) and is provided with an opening at the end to communicate with a filter press box (5), a conveying device (4) is arranged inside the conveying cylinder (2), a filter component (3) is sleeved on the outside of the conveying cylinder (2), and a slag inlet (201) is arranged on the top of the conveying cylinder (2); The filtering component (3) comprises two sleeves (304) sleeved on the outside of the conveying cylinder (2), a plurality of salvage plates (305) are evenly arranged between the two sleeves (304), and the salvage plates (305) are arranged along the cross-sectional radius of the filter box (1), and a scraping assembly (9) is provided on each salvage plate (305), a second gear (302) is sleeved on the outside of one of the sleeves (304), the second gear (302) is meshed with the first gear (301), and the center of the first gear (301) is connected to the output end of the first motor (303) penetrating the side wall of the filter box (1).

2. The multi-stage filtration device for papermaking wastewater according to claim 1, It is characterized in that The scraping assembly (9) comprises two sliders (903), the two sliders (903) are respectively installed in a slide groove (901), the two slide grooves (901) are respectively arranged on both sides of the salvage plate (305), and the slide groove (901) is perpendicular to the conveying cylinder (2), and a scraping strip (902) is arranged between the two sliders (903), and the scraping strip (902) is in contact with the surface of the salvage plate (305).

3. The multi-stage filtration device for papermaking wastewater according to claim 1, It is characterized in that The surface of the salvage plate (305) is in a mesh shape.

4. The multi-stage filtration device for papermaking wastewater according to claim 1, It is characterized in that The conveying device (4) comprises an auger (402) arranged along the conveying cylinder (2); one end of the auger (402) penetrates the side wall of the filter box (1) and is connected to the output end of the second motor (401); the other end is arranged on the wall of the conveying cylinder (2).

5. The multi-stage filtration device for papermaking wastewater according to claim 1, It is characterized in that A cylinder (6) is provided at the top of the filter press box (5); the output end of the cylinder (6) is connected to the upper end of a telescopic rod (7); the lower end of the telescopic rod (7) passes through the top of the filter press box (5) and is connected to the top of a pressure plate (8); a filter plate (13) is provided at the lower part of the filter press box (5); a slag outlet (11) is provided on the side wall of the filter press box (5) above the filter plate (13); and a water outlet (12) with a valve is provided at the bottom of the filter press box (5).

6. The multi-stage filtration device for papermaking wastewater according to claim 1, It is characterized in that The width of the slag inlet (201) is consistent with the distance between the two salvage plates (305) close to the conveying cylinder (2), and the length of the slag inlet (201) is consistent with the length of the salvage plates (305).

7. The multi-stage filtration device for papermaking wastewater according to claim 1, It is characterized in that The bottom of the filter box (1) is provided with a water inlet and outlet (10) with a valve.

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