Papermaking deslagging separator

Abstract

The utility model relates to the technical field of papermaking equipment, in particular to a papermaking deslagging separator. According to the papermaking deslagging separator provided by the embodiment of the invention, the baffling discharging pipe is mounted at the discharging opening of the screen drum, and the baffling discharging pipe is of the stepped tubular structure formed by connecting the first transverse part and the second transverse part. The first transverse part can contain slag discharged from the discharging port, and the second transverse part forms a slag free falling body channel through the height difference. The exhaust fan can blow the slag materials to the discharging pipe through airflow generated by the height difference, and therefore the slag material discharging efficiency and progress of the slag discharging separator are improved. By the adoption of the structural design, the rapid discharging function can be achieved through the forced pushing effect of air flow, and the slag discharging efficiency of paper pulp raw materials is guaranteed.

Description

Technical Field

[0001] This application relates to the field of papermaking equipment technology, and more specifically, to a papermaking slag separator. Background Technology

[0002] A papermaking slag separator is a device used in waste paper systems to screen and process tail pulp with high impurity content. Its main function is to separate impurities from waste paper pulp to ensure pulp concentration and thus ensure the smooth progress of the papermaking process.

[0003] In related technologies, papermaking slag separators mainly consist of a shell, a screen cylinder, a spiral auger, and a drive system. The screen cylinder is placed horizontally inside the shell, and the spiral auger is located inside the screen cylinder and coincides with its axis, rotating through the drive system. After the pulp is fed into the screen cylinder, the rotating spiral auger squeezes and dewaters the pulp, causing the slag to be discharged from one end of the discharge port, while the pulp containing paper fibers leaks out through the screen cylinder.

[0004] In actual use, the slag after being squeezed and dewatered by the slag separator has poor fluidity, which makes it difficult to be discharged from the outlet quickly. Over time, this will cause blockage of the outlet, thus affecting the efficiency and progress of slag separation. Utility Model Content

[0005] In view of this, this application provides a papermaking slag separator to solve the problem of slag easily clogging at the discharge port in related technologies.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] A papermaking ash separator, comprising:

[0008] A housing is mounted on a frame, and a drive motor is bolted to the top of the frame;

[0009] A screen cylinder is horizontally placed inside the housing. Its wall panel away from the drive motor has a discharge port, and a spiral auger is installed inside the screen cylinder and is coaxially fixed to the drive shaft of the drive motor.

[0010] The baffle discharge pipe includes two vertically connected first transverse sections and a second transverse section, and a stepped structure is formed between them. The first transverse section is connected to the discharge port, and the second transverse section extends outward toward the shell and forms a discharge pipe, and its lower edge height is lower than the lower edge height of the first transverse section.

[0011] An exhaust fan is mounted on the side plate of the housing and communicates with it through a reserved hole on the side of the second transverse part. The height of its upper edge is lower than the height of the lower edge of the first transverse part, so as to blow the slag pushed to the bottom surface of the second transverse part to the discharge pipe.

[0012] In some possible implementations, the discharge port is located in the area below the end face of the screen cylinder.

[0013] In some possible implementations, the exhaust fan is a centrifugal fan whose air delivery direction is parallel to the bottom surface of the second transverse section.

[0014] In some possible implementations, the bottom surface of the second transverse portion is welded with guide ribs parallel to the airflow direction, the height of which decreases progressively from the exhaust fan to the unloading pipe.

[0015] In some possible implementations, the second transverse portion is connected to the discharge pipe by flange bolts, and the connection between the two is provided with an annular sealing groove and a rubber gasket embedded therein.

[0016] In some possible implementations, the blade edges of the auger are covered with replaceable carbide wear-resistant sleeves.

[0017] The papermaking slag separator provided in this application has at least the following beneficial effects:

[0018] In the papermaking slag separator provided in this application embodiment, a baffle discharge pipe is installed at the discharge port of the screen cylinder. The baffle discharge pipe is a stepped tubular structure formed by connecting a first transverse section and a second transverse section. The first transverse section can collect the slag discharged from the discharge port, and the second transverse section forms a free-fall channel for the slag through the height difference. The exhaust fan can use the airflow generated by the height difference to blow the slag to the discharge pipe, thereby improving the slag discharge efficiency and process of the slag separator. With the above structural design, the forced airflow can achieve rapid discharge, thus ensuring the slag discharge efficiency of the pulp raw materials. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the papermaking slag separator provided in the embodiments of this application;

[0021] Figure 2 for Figure 1 Exploded view;

[0022] Figure 3 for Figure 1 Schematic diagram of the installation location of the central exhaust fan;

[0023] Figure 4 This is a schematic diagram of the assembly structure of the screen cylinder and the baffle discharge pipe;

[0024] Figure 5 for Figure 4 Side sectional view;

[0025] Figure 6 for Figure 5 Schematic diagram of the assembly structure of the intermediate baffle discharge pipe and the exhaust fan;

[0026] Figure 7 for Figure 6 Side sectional view;

[0027] Figure 8 This is a schematic diagram of the internal structure of the baffle discharge pipe in another embodiment of this application;

[0028] Figure 9 This is an exploded view of the baffle discharge pipe in another embodiment of this application.

[0029] In the picture:

[0030] 100. Shell; 110. Frame; 120. Unloading hopper;

[0031] 200. Drive motor;

[0032] 300. Screen cylinder; 310. Wall panel; 311. Discharge port; 320. Feed pipe;

[0033] 400. Spiral auger;

[0034] 500, Baffle discharge pipe; 510, First transverse section; 520, Second transverse section; 530, Discharge pipe;

[0035] 600. Exhaust fan;

[0036] 700, airflow guide ribs;

[0037] 800, Flange; 810, Annular Sealing Groove;

[0038] 900. Rubber gasket. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0040] like Figures 1-7 As shown, the papermaking slag separator provided in this embodiment includes a housing 100, a screen cylinder 300, a baffle discharge pipe 500, and an exhaust fan 600. The housing 100 is fixedly installed on top of a floor-standing frame 110, which is a floor-standing three-dimensional frame welded from multiple 304 stainless steel sections, primarily serving to support the equipment. A horizontal drive motor 200 is also bolted to the top of the frame 110, located beside the housing 100.

[0041] The screen cylinder 300 is a cylindrical structure with openings at both ends and through holes in its walls. It is horizontally positioned inside the housing 100 and is used for screening and removing impurities from pulp raw materials. A spiral auger 400 is rotatably mounted inside the screen cylinder 300 and is coaxially and fixedly connected to the drive shaft of the drive motor 200. When the drive motor 200 starts, it drives the spiral auger 400 to rotate within the screen cylinder, thereby screening the pulp raw materials inside. A discharge hopper 120 is located at the bottom of the screen cylinder 300, through which the screened pulp liquid can be collected directionally.

[0042] Specifically, a feed pipe 320 is provided at the top of the screen cylinder 300 near the drive motor 200. The feed pipe 320 extends vertically upward through the housing 100 and guides the pulp raw material into the screen cylinder 300. A discharge port 311 is provided at the end of the screen cylinder 300 away from the drive motor 200. The discharge port 311 is used to discharge the residue in the pulp raw material. Preferably, the discharge port 311 is located in the lower half of the screen cylinder wall plate 310, which ensures that the residue can be concentrated and enter the first transverse section 510.

[0043] In this embodiment, the baffle discharge pipe 500 consists of two horizontally distributed and vertically connected first transverse portions 510 and second transverse portions 520, which together form a stepped tubular structure. That is, the bottom surface height of the first transverse portion 510 is higher than that of the second transverse portion 520, creating a height difference between them. Preferably, the bottom surface of the second transverse portion 520 is welded with guide ribs 700 parallel to the airflow direction, and the height of the guide ribs 700 gradually decreases from the exhaust fan 600 to the discharge pipe 530. The baffle discharge pipe 500 is connected to the outlet 311 of the screen cylinder 300 through the first transverse portion 510, and the second transverse portion 520 extends towards the outside of the housing 100, forming a discharge pipe 530 at its end, which is a downwardly inclined structure.

[0044] like Figures 3-7 As shown, the exhaust fan 600 is bolted to the side plate of the housing 100. A pre-drilled hole is provided on the side plate of the second transverse portion 520 of the baffle discharge pipe 500, through which the exhaust fan 600 can blow air into the second transverse portion 520. Furthermore, the upper edge of the exhaust fan 600 is lower than the lower edge of the first transverse portion 510, creating a height difference to generate directional airflow.

[0045] In actual use, the slag in the pulp raw material will continuously accumulate towards the discharge port 311 through the propulsion of the auger 400, until it enters the first transverse section 510 of the baffle discharge pipe 500. After receiving the slag, the slag will fall to the bottom surface of the second transverse section 520 due to gravity. Since the height of the exhaust fan 600 is lower than the lower edge of the first transverse section 510, it can be ensured that the generated airflow can act on the bottom surface of the second transverse section 520, that is, the slag accumulation surface, and force the slag to be blown to the discharge pipe 530 and discharged outward.

[0046] In the papermaking slag separator provided in this embodiment, a baffle discharge pipe 500 is installed at the discharge port 311 of the screen cylinder 300. The baffle discharge pipe 500 is a stepped tubular structure formed by connecting a first transverse portion 510 and a second transverse portion 520. The first transverse portion 510 can collect the slag discharged from the discharge port 311, and the second transverse portion 520 forms a free-fall channel for the slag through a height difference. The exhaust fan 600 can use the airflow generated by the height difference to blow the slag to the discharge pipe 530, thereby improving the slag discharge efficiency and progress of the slag separator. With the above structural design, the forced airflow can achieve rapid discharge, thus ensuring the slag discharge efficiency of the pulp raw materials.

[0047] In some embodiments, the exhaust fan 600 is a centrifugal fan, and its airflow direction is parallel to the bottom surface of the second transverse portion 520. This parallel design allows the airflow to cover a larger area of ​​the slag accumulation, avoiding airflow loss caused by dispersion, and enabling the slag to quickly slide towards the discharge pipe 530.

[0048] In some embodiments, such as Figure 9 As shown, the second transverse section 520 and the discharge pipe 530 are bolted together by a flange 800. The connection between the two is provided with an annular sealing groove 810 and a rubber gasket 900 embedded therein. The flange 800 bolt connection facilitates quick disassembly and cleaning, while the annular sealing groove 810 and the rubber gasket 900 provide reliable airtightness to reduce airflow loss.

[0049] In some embodiments, the blade edges of the auger 400 are covered with replaceable carbide wear-resistant sleeves. This design significantly extends the service life of the core component and simplifies maintenance. The carbide sleeves resist abrasion from impurities in the pulp, such as metal fragments or grit, reducing the risk of blade damage. The sleeves can be secured with bolts or clips for easy replacement during downtime.

[0050] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0051] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0052] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0053] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0054] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0055] As used herein, the term "substrate" refers to the material on which subsequent material layers are added. The substrate itself may be patterned. The material added on top of the substrate may be patterned or may remain unpatterned. Furthermore, the substrate may include a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, etc. Alternatively, the substrate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafers).

[0056] The term "layer" as used herein can refer to a portion of material comprising a region of thickness. A layer may extend over the entire underlying or overlying structure, or may have a extent smaller than that of the underlying or overlying structure. Furthermore, a layer may be a region of a homogeneous or non-homogeneous continuous structure, with a thickness less than that of the continuous structure. For example, a layer may be located between the top and bottom surfaces of the continuous structure, or between any pairs of lateral planes at the top and bottom surfaces. A layer may extend laterally, vertically, and / or along a tapered surface. A substrate may be a layer, and may include one or more layers, and / or may have one or more layers located on, above, and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductor and contact layers (forming contacts, interconnects, and / or vias therein) and one or more dielectric layers.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A papermaking slag separator, characterized in that, include: The housing is mounted on the frame, and a drive motor is bolted to the top of the frame; A screen cylinder is horizontally placed inside the housing. Its wall panel away from the drive motor has a discharge port, and a spiral auger is installed inside the screen cylinder and is coaxially fixed to the drive shaft of the drive motor. The baffle discharge pipe includes two vertically connected first transverse sections and a second transverse section, and a stepped structure is formed between them. The first transverse section is connected to the discharge port, and the second transverse section extends outward toward the shell and forms a discharge pipe, and its lower edge height is lower than the lower edge height of the first transverse section. An exhaust fan is mounted on the side plate of the housing and communicates with it through a reserved hole on the side of the second transverse part. The height of its upper edge is lower than the height of the lower edge of the first transverse part, so as to blow the slag pushed to the bottom surface of the second transverse part to the discharge pipe.

2. The papermaking slag separator according to claim 1, characterized in that: The discharge port is located in the area below the end face of the screen cylinder.

3. The papermaking slag separator according to claim 1, characterized in that: The exhaust fan is a centrifugal fan, and its air delivery direction is parallel to the bottom surface of the second transverse section.

4. The papermaking slag separator according to claim 1, characterized in that: The bottom surface of the second transverse section is welded with guide ribs parallel to the airflow direction, and the height of the guide ribs decreases gradually from the exhaust fan to the unloading pipe.

5. The papermaking slag separator according to claim 1, characterized in that: The second transverse section is connected to the unloading pipe by flange bolts, and the connection between the two is provided with an annular sealing groove and a rubber gasket embedded therein.

6. The papermaking slag separator according to claim 1, characterized in that: The blade edges of the auger are covered with replaceable hard alloy wear-resistant sleeves.

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