Slurry making activation device and tailing concentration equipment

Abstract

The invention discloses a slurry-making activation device and tailing concentration equipment, and relates to the slurry-making activation device technology, and the slurry-making activation device comprises a medium nozzle and an elastic sleeve. The medium nozzle is provided with an inflow channel, a confluence groove and a plurality of flow dividing channels, the medium nozzle extends in the axial direction, the flow dividing channels are arranged at intervals in the circumferential direction, one end of each flow dividing channel communicates with the inflow channel, and the confluence groove is annularly formed in the surface of the medium nozzle in the circumferential direction; the elastic sleeve is arranged at the end, away from the inflow channel in the axial direction, of the medium nozzle in a sleeving mode, in the axial direction, the surface, located on the side, away from the inflow channel, of the confluence groove, of the medium nozzle is attached to the elastic sleeve, and the confluence groove is covered with the elastic sleeve so that a confluence cavity can be formed between the confluence groove and the elastic sleeve. And the other end of each shunting channel is communicated with the confluence cavity. According to the slurry making activation device, the probability that sand grains flow back into the slurry making activation device can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pulp-making activation devices, and in particular, to a pulp-making activation device and a tailings thickening device. Background Art

[0002] In mines, vertical sand bins are used for gravity thickening of tailings. Low-concentration tailings slurry is fed into the bin from the top. Through the action of gravity sedimentation, a compacted area is formed at the bottom of the bin. To achieve high-quality sand discharge, the problem of "caking" of tailings in the compacted area must be solved. Usually, a pulp-making activation device is used to activate the compacted area, and this process is called pulp-making activation. The pulp-making activation device transports an activation medium (high-pressure water or air) to the pulp-making activation device through an activation medium delivery pipe, and then sprays the activation medium from the pulp-making activation device into the compacted area at the bottom of the bin to dynamically disturb the tailings in the compacted area at the bottom of the bin, so that the slurry is fully activated and has fluidity. In traditional pulp-making activation devices, after the activation stops, sand grains are likely to flow back into the pulp-making activation device, resulting in blockage and damage of the pulp-making activation device. Summary of the Invention

[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a pulp-making activation device that can reduce the probability of sand grains flowing back into the pulp-making activation device.

[0004] This application also provides a tailings thickening device.

[0005] To achieve the above purpose, the technical solution adopted in this application is as follows:

[0006] In the first aspect, this application provides a pulp-making activation device having an axial direction, a radial direction, and a circumferential direction. The pulp-making activation device includes:

[0007] A medium nozzle provided with an inflow channel, a confluence groove, and a plurality of diversion channels. The inflow channel extends along the axial direction. The plurality of diversion channels are spaced along the circumferential direction, and one end of each diversion channel communicates with the inflow channel. The confluence groove is circumferentially provided on the surface of the medium nozzle.

[0008] An elastic sleeve is sleeved on one end of the medium nozzle away from the inflow channel along the axial direction. In the axial direction, the surface of the medium nozzle on the side of the confluence groove away from the inflow channel fits with the elastic sleeve. The elastic sleeve covers the confluence groove to form a confluence cavity between the confluence groove and the elastic sleeve. The other end of each diversion channel communicates with the confluence cavity.

[0009] In an alternative embodiment, the central axis of the inflow channel coincides with the central axis of the medium nozzle, and each of the diversion channels is inclined from the central axis of the medium nozzle towards the confluence groove. The angle between the central axis of each diversion channel and the central axis of the medium nozzle is α, satisfying: 15° ≤ α ≤ 30°.

[0010] In an alternative embodiment, the diameter of the inflow channel is D 1 , and the diameter of the diversion channel is D 2 , and the number of the diversion channels is n, satisfying: where n is a natural number and n ≥ 2, γ is a diversion coefficient, and 1.2 ≤ γ ≤ 1.5.

[0011] In an alternative embodiment, the wall thickness of the elastic sleeve is L, satisfying: 3.5 mm ≤ L ≤ 5 mm.

[0012] In an alternative embodiment, the medium nozzle is made of stainless steel, and the surface of the medium nozzle is treated for wear resistance by a boronizing process. The Vickers hardness HV of the surface of the medium nozzle satisfies: HV ≥ 1200 kg / mm 2 .

[0013] In an alternative embodiment, the medium nozzle has a nozzle portion and a confluence portion. The nozzle portion is provided at one end of the medium nozzle away from the inflow channel along the axial direction, and one end of the nozzle portion close to the inflow channel along the axial direction is connected to the confluence portion. The confluence groove is provided on the surface of the confluence portion, and the elastic sleeve is simultaneously sleeved outside the nozzle portion and the confluence portion.

[0014] In an alternative embodiment, the medium nozzle further has a first connection portion. The first connection portion is connected to one end of the confluence portion away from the nozzle portion along the axial direction. The elastic sleeve is simultaneously sleeved outside the nozzle portion, the confluence portion and the first connection portion. The pulp-making activation device further includes a fastener, and the fastener is sleeved outside the elastic sleeve and is located at the first connection portion.

[0015] In an alternative embodiment, the medium nozzle further has an anti-disengagement portion. In the axial direction, both ends of the anti-disengagement portion are respectively connected to the confluence portion and the first connection portion. The outer diameter of the anti-disengagement portion gradually increases from the confluence portion towards the first connection portion, and the maximum outer diameter of the anti-disengagement portion is D 3 , and the outer diameter of the first connection portion is D 4 , satisfying: D 3 > D 4 .

[0016] In an alternative embodiment, the media nozzle further has a second connection portion and a wrenching portion. The two ends of the wrenching portion along the axial direction are respectively connected to the second connection portion and the first connection portion. The inflow channel penetrates through the second connection portion, and the surface of the second connection portion has an external thread. The outer diameter of the wrenching portion is D 5 , satisfying: D 5 > D 3 .

[0017] In a second aspect, the present application provides a tailings thickening device, including: the pulp-making activation device according to any one of the foregoing embodiments.

[0018] The pulp-making activation device of the present application has the following advantages:

[0019] In the pulp-making activation device of the present application, the inflow channel is used to communicate with the activation medium delivery pipe to deliver the activation medium into the media nozzle through the activation medium delivery pipe. When the activation medium enters the inflow channel, the activation medium can be buffered in the confluence chamber through multiple diversion channels. Since the activation medium flows in a high-pressure state in the media nozzle, the flow of the activation medium in the confluence chamber can form a spraying channel between the elastic sleeve and the media nozzle, so that the activation medium can be sprayed into the thickening chamber of the tailings thickening device through the spraying channel, thereby realizing the activation of the pulp by the pulp-making activation device. At the same time, after the activation stops, since the activation medium no longer acts on the elastic sleeve, the elastic sleeve is then in contact with the surface of the media nozzle, and the spraying channel is closed. During the spraying of the activation medium, since the multiple diversion channels are arranged at intervals in the circumferential direction, and the confluence groove is annularly arranged on the surface of the media nozzle in the circumferential direction, the activation medium can enter the confluence groove evenly in the circumferential direction, so as to reduce the uneven point impact on the pipe wall of the elastic sleeve located in the confluence chamber and avoid the phenomenon of partial deformation of the elastic sleeve. Further, since the activation medium can be buffered in the confluence chamber, in this way, the flow of the activation medium can be buffered by the confluence chamber, and at the same time, the activation medium can be evenly in contact with the pipe wall of the elastic sleeve located in the confluence chamber, so as to further reduce the impact of the activation medium on the elastic sleeve, extend the service life of the elastic sleeve, enable the elastic sleeve to always be in contact with the surface of the media nozzle, reduce the probability of the pulp sand grains flowing back into the pulp-making activation device, and reduce the probability of blockage and damage of the pulp-making activation device. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Shows a schematic cross-sectional structure diagram of the pulp-making activation device in the present application;

[0022] Figure 2 Shows a schematic cross-sectional structure diagram of the medium nozzle in the present application;

[0023] Figure 3 Shows a schematic side view structure diagram of the medium nozzle in the present application.

[0024] Description of main component markings:

[0025] 100 - medium nozzle; 110 - inflow channel; 120 - confluence groove; 130 - diversion channel; 140 - nozzle part; 150 - confluence part; 160 - first connection part; 170 - anti-disengagement part; 180 - second connection part; 190 - wrenching part;

[0026] 200 - elastic sleeve;

[0027] 300 - confluence chamber;

[0028] 400 - fastener;

[0029] 500 - injection channel;

[0030] x - axial direction; y - radial direction; z - circumferential direction. Detailed implementation manners

[0031] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless specifically defined otherwise.

[0034] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0036] Referring to Figures 1 to 3 As shown, the pulp-making activation device involved in the embodiment of this application has an axial direction x, a radial direction y, and a circumferential direction z. The pulp-making activation device includes: a medium nozzle 100 and an elastic sleeve 200.

[0037] Specifically, the medium nozzle 100 is provided with an inflow channel 110, a confluence groove 120, and a plurality of diversion channels 130. The inflow channel 110 extends along the axial direction x. The plurality of diversion channels 130 are arranged at intervals along the circumferential direction z, and one end of each diversion channel 130 communicates with the inflow channel 110. The confluence groove 120 is annularly arranged on the surface of the medium nozzle 100 along the circumferential direction z. The elastic sleeve 200 is sleeved on one end of the medium nozzle 100 along the axial direction x away from the inflow channel 110. In the axial direction x, the surface of the medium nozzle 100 on the side of the confluence groove 120 away from the inflow channel 110 is in contact with the elastic sleeve 200. The elastic sleeve 200 covers the confluence groove 120 to form a confluence chamber 300 between the confluence groove 120 and the elastic sleeve 200, and the other end of each diversion channel 130 communicates with the confluence chamber 300.

[0038] It should be noted that the axial direction x is the direction indicated by x in Figure 1 and the radial direction y is the direction indicated by y in Figure 1 and the circumferential direction z is the direction indicated by z in Figure 3 the same.

[0039] It should be noted that in the traditional pulp-making activation device, under the long-term impact of the activation medium on the elastic sleeve 200, the elastic sleeve 200 is prone to uneven deformation, resulting in the inability of the elastic sleeve 200 to fit the surface of the medium nozzle 100, which will cause the injection channel 500 not to be closed. Further, after the activation stops, the pulp sand grains will flow back into the pulp-making activation device through the injection channel 500.

[0040] In the pulp-making activation device of the present application, the inflow channel 110 is used to communicate with the activation medium delivery pipe to deliver the activation medium into the medium nozzle 100 through the activation medium delivery pipe. When the activation medium enters the inflow channel 110, the activation medium can be buffered in the confluence chamber 300 through a plurality of diversion channels 130. Since the activation medium flows in a high-pressure state in the medium nozzle 100, the flow of the activation medium in the confluence chamber 300 can form an injection channel 500 between the elastic sleeve 200 and the medium nozzle 100, so that the activation medium can be sprayed into the concentration bin of the tailings thickening equipment through the injection channel 500, thereby realizing the activation of the pulp by the pulp-making activation device. At the same time, after the activation stops, since the activation medium no longer acts on the elastic sleeve 200, at this time, the elastic sleeve 200 fits the surface of the medium nozzle 100, and the injection channel 500 is closed. During the injection of the activation medium, since the plurality of diversion channels 130 are arranged at intervals in the circumferential direction z, and the confluence groove 120 is arranged in a ring shape in the circumferential direction z on the surface of the medium nozzle 100, the activation medium can enter the confluence groove 120 uniformly in the circumferential direction z, so as to reduce the uneven point impact on the pipe wall of the elastic sleeve 200 located in the confluence chamber 300 and avoid the phenomenon of partial deformation of the elastic sleeve 200. Further, since the activation medium can be buffered in the confluence chamber 300, in this way, the flow of the activation medium can be buffered by the confluence chamber 300, and at the same time, the activation medium can be uniformly contacted with the pipe wall of the elastic sleeve 200 located in the confluence chamber 300, so as to further reduce the impact of the activation medium on the elastic sleeve 200, extend the service life of the elastic sleeve 200, make the elastic sleeve 200 always fit the surface of the medium nozzle 100, reduce the probability of pulp sand grains flowing back into the pulp-making activation device, and reduce the probability of blockage and damage of the pulp-making activation device.

[0041] Specifically, in this embodiment, the activation medium is high-pressure water or high-pressure gas.

[0042] Refer toFigure 2 As shown, the central axis of the inflow channel 110 coincides with the central axis of the medium nozzle 100. Each diversion channel 130 is inclined from the central axis of the medium nozzle 100 towards the confluence groove 120. The angle between the central axis of each diversion channel 130 and the central axis of the medium nozzle 100 is α, satisfying: 15° ≤ α ≤ 30°.

[0043] Specifically, in this embodiment, α can take values such as 15°, 20°, 25°, 30°, etc. The specific value is determined according to the number of diversion channels 130, the diameter of the inflow channel 110, the diameter of the confluence groove 120, and the diameter of the diversion channels 130.

[0044] In this embodiment, if the angle α between the central axis of the diversion channel 130 and the central axis of the medium nozzle 100 satisfies: α < 15°, then the angle between the central axis of the diversion channel 130 and the central axis of the medium nozzle 100 is too small. Thus, when the activation medium enters the diversion channel 130 via the inflow channel 110, the change in the flow direction of the activation medium is very small, and thus it cannot play a role in diverting and buffering the activation medium. When the activation medium enters the confluence chamber 300, it will cause a large impact on the wall of the elastic sleeve 200 located at the confluence chamber 300. If the angle α between the central axis of the diversion channel 130 and the central axis of the medium nozzle 100 satisfies: α > 30°, then the angle between the central axis of the diversion channel 130 and the central axis of the medium nozzle 100 is too large. Thus, the flow path of the activation medium in the diversion channel 130 will be too long. Further, the buffering effect of the diversion channel 130 on the activation medium will be too large, resulting in too low a flow rate of the activation medium and unable to play an activation role. When the angle α between the central axis of the diversion channel 130 and the central axis of the medium nozzle 100 satisfies: 15° ≤ α ≤ 30°, it can both play a role in diverting and buffering the flow of the activation medium through the diversion channel 130. At the same time, it can also ensure the flow rate of the activation medium to ensure that the activation medium can play an activation role.

[0045] Continue to refer to Figure 2 As shown, the diameter of the inflow channel 110 is D 1 , the diameter of the diversion channel 130 is D 2 , the number of diversion channels 130 is n, satisfying: where n is a natural number and n ≥ 2, γ is a diversion coefficient, and 1.2 ≤ γ ≤ 1.5.

[0046] Specifically, when n = 2, 1.70D 2 ≤ D 1 ≤ 2.12D 2 ;

[0047] When n = 3, 2.08D 2 ≤ D 1 ≤ 2.60D 2 ;

[0048] When n = 4, 2.4D 2 ≤ D 1 ≤ 3D 2 ;

[0049] When n = 5, 2.68D 2 ≤ D 1 ≤ 3.35D 2 .

[0050] In this embodiment, when the diameter D of the inflow channel 110 1 and the diameter D of the diversion channel 130 2 satisfy: the diameter of the inflow channel 110 is directly proportional to the diameter and the number of the diversion channels 130. Thus, when the diameter of the inflow channel 110 increases, the number of the diversion channels 130 can be increased or the diameter of the diversion channels 130 can be enlarged to meet the flow requirements of the turbulence medium. In this process, if the diversion coefficient γ < 1.2, the diameter of the diversion channels 130 will be too large. Thus, when the activation medium enters the diversion channels 130, the flow velocity of the activation medium entering the confluence chamber 300 will be too low, further resulting in a reduction in the activation effect of the activation medium. If the diversion coefficient γ > 1.5, the diameter of the diversion channels 130 will be too small. Thus, the diversion ability of the diversion channels 130 will be reduced. At the same time, the flow velocity of the activation medium in the diversion channels 130 will be too large. When the activation medium enters the confluence chamber 300 through the diversion channels 130, a relatively large impact will be exerted on the tube wall of the elastic sleeve 200 located at the confluence chamber 300. When the diversion coefficient γ satisfies 1.2 ≤ γ ≤ 1.5, it can not only play a role in diverting and buffering the flow of the activation medium through the diversion channels 130, but also ensure the flow velocity of the activation medium.

[0051] Referring to Figure 1 as shown, the wall thickness of the elastic sleeve 200 is L, satisfying 3.5 mm ≤ L ≤ 5 mm.

[0052] Specifically, in this embodiment, the wall thickness L of the elastic sleeve 200 can take values such as 3.5 mm, 4 mm, 4.5 mm, 5 mm, etc.

[0053] In this embodiment, if the wall thickness L of the elastic sleeve 200 < 3.5 mm, the elastic sleeve 200 will be too thin. Thus, when the highly flowing activation medium in the medium nozzle 100 impacts the elastic sleeve 200, it will cause a large deformation of the elastic sleeve 200, further resulting in an over-large injection channel 500, a decrease in the injection velocity of the activation medium, a reduction in the activation effect, and a decrease in the wear resistance, corrosion resistance, and deformation recovery ability of the elastic sleeve 200, thereby causing the phenomenon that the pulp sand grains flow back into the pulp activation device. If the wall thickness L of the elastic sleeve 200 > 5 mm, the elastic sleeve 200 will be too thick. Thus, when the highly flowing activation medium in the medium nozzle 100 impacts the elastic sleeve 200, the activation medium cannot cause the elastic sleeve 200 to deform, the injection channel 500 cannot be opened, and the activation medium cannot be ejected from the medium nozzle 100. When the wall thickness L of the elastic sleeve 200 satisfies 3.5 mm ≤ L ≤ 5 mm, it can not only open the injection channel 500 but also control the cross-sectional area of the injection channel 500 within a preset range to increase the injection velocity of the activation medium ejected through the injection channel 500. At the same time, it can also improve the wear resistance, corrosion resistance, and deformation recovery ability of the elastic sleeve 200.

[0054] Specifically, in this embodiment, the medium nozzle 100 is made of stainless steel, and the surface of the medium nozzle 100 is treated with a boronizing process for wear resistance. The Vickers hardness HV on the surface of the medium nozzle 100 satisfies HV ≥ 1200 kg / mm 2 .

[0055] Specifically, in this embodiment, the surface of the medium nozzle 100 is treated with a TSB composite boronizing process for wear and corrosion resistance to improve the wear and corrosion resistance on the surface of the medium nozzle 100.

[0056] Specifically, in this embodiment, the TSB composite boronizing process used mainly includes steps such as surface cleaning, surface activity enhancement, high-temperature carburizing, high-temperature boronizing, quenching and tempering, etc. First, the metal parts are surface-cleaned with acetone and preheated to about 100 °C; then the preheated parts are immersed in a methanol + borax mixture (CH 3 ON + Na 2 B 4 O 7 ·10H 2 O) for surface activity strengthening treatment for more than 4 hours; then the test pieces are carburized at a temperature of 850 °C to 1000 °C for 4 hours to form a support layer of about 0.5 mm, and boronized at the same temperature for 4 hours to form a wear-resistant layer of about 0.5 mm. The boronizing uses the molten salt method, and the main components of the boronizing agent are B 4 C, KBF 4and SiC, and then the tissue stress is regulated by quenching at 900°C and tempering at a low temperature of 200°C to 300°C to obtain a gradient structure with a highly wear-resistant surface and a tough core.

[0057] Specifically, in this embodiment, the medium nozzle 100 is made of high-strength stainless steel. When the medium nozzle 100 is made of high-strength stainless steel, the Vickers hardness HV on the surface of the medium nozzle 100 satisfies: HV≥1000 kg / mm 2 , after the wear resistance treatment is carried out on the surface of the medium nozzle 100 made of high-strength stainless steel by using a boronizing process, the Vickers hardness HV on the surface of the medium nozzle 100 satisfies: HV≥1200 kg / mm 2 .

[0058] In this embodiment, the medium nozzle 100 is subjected to long-term high-pressure abrasion and erosion by corrosive ions in the pulp. When the Vickers hardness HV on the surface of the medium nozzle 100≥1200 kg / mm 2 , it can make the surface of the medium nozzle 100 have high wear resistance and corrosion resistance. In this way, the wear resistance and corrosion resistance of the medium nozzle 100 in the pulp activation process can be improved, so as to improve the service life and structural strength of the medium nozzle 100.

[0059] Referring to Figure 2 as shown, the medium nozzle 100 has a nozzle part 140 and a confluence part 150. The nozzle part 140 is arranged at one end of the medium nozzle 100 far from the inflow channel 110 along the axial direction x, and one end of the nozzle part 140 close to the inflow channel 110 along the axial direction x is connected to the confluence part 150. The confluence groove 120 is arranged on the surface of the confluence part 150, and the elastic sleeve 200 is sleeved outside both the nozzle part 140 and the confluence part 150 at the same time.

[0060] Specifically, in this embodiment, the injection channel 500 is located between the surface of the nozzle part 140 and the pipe wall of the elastic sleeve 200.

[0061] In this embodiment, since the elastic sleeve 200 is sleeved outside the nozzle portion 140 and the confluence portion 150 at the same time, when the activation medium in the diversion channel 130 flows into the confluence groove 120, the confluence cavity 300 formed between the elastic sleeve 200 and the confluence groove 120 can buffer the activation medium to avoid the impact of the activation medium on the tube wall of the elastic sleeve 200 at the confluence portion 150. At the same time, the activation medium in the confluence cavity 300 can push the elastic sleeve 200 at the nozzle portion 140, so that the elastic sleeve 200 elastically deforms in the radial direction y away from the nozzle portion 140, thereby forming a spray channel 500, enabling the activation medium to be sprayed into the thickening bin of the tailings thickening equipment through the spray channel 500. In this process, since the confluence groove 120 is circumferentially arranged around the surface of the medium nozzle 100 in the circumferential direction z, the activation medium can form a circumferential impact on the elastic sleeve 200 at the nozzle portion 140 in the circumferential direction z, so that the formed spray channel 500 is an annular spray channel 500. In this way, the spraying uniformity of the activation medium sprayed through the spray channel 500 can be improved, thereby improving the activation uniformity of the activation medium.

[0062] Specifically, referring to Figure 2 As shown, in this embodiment, in the axial direction x, the diameter of the confluence portion 150 gradually decreases from both ends of the confluence portion 150 towards the middle of the confluence portion 150, so that the confluence portion 150 has a waist-shaped structure with a concave middle, thereby forming a confluence groove 120 that is concave in the radial direction y on the surface of the confluence portion 150, and at the same time ensuring that the diversion channel 130 can pass through one end of the confluence portion 150 away from the nozzle portion 140 in the axial direction x and communicate with the confluence groove 120.

[0063] Referring to Figure 1 and Figure 2 As shown, the medium nozzle 100 further has a first connection portion 160. The first connection portion 160 is connected to one end of the confluence portion 150 away from the nozzle portion 140 in the axial direction x. The elastic sleeve 200 is sleeved outside the nozzle portion 140, the confluence portion 150, and the first connection portion 160 at the same time. The pulp-making activation device further includes a fastener 400. The fastener 400 is sleeved outside the elastic sleeve 200 and is located at the first connection portion 160.

[0064] In this embodiment, since the elastic sleeve 200 is simultaneously sleeved outside the nozzle portion 140, the confluence portion 150, and the first connection portion 160, and the first connection portion 160 is connected to one end of the confluence portion 150 away from the nozzle portion 140 along the axial direction x, in this way, both the nozzle portion 140 and the confluence portion 150 can be completely covered by the elastic sleeve 200. At the same time, since the fastener 400 is sleeved outside the elastic sleeve 200 and is located at the first connection portion 160, in this way, the elastic sleeve 200 can be fixed by the fastener 400, preventing the elastic sleeve 200 from displacing along the axial direction x, improving the stability of the connection relationship between the elastic sleeve 200 and the nozzle portion 140 and the confluence portion 150. At the same time, the fastener 400 can seal one end of the elastic sleeve 200 away from the nozzle portion 140 along the axial direction x, preventing the activation medium from spraying out from one end of the elastic sleeve 200 away from the nozzle portion 140 along the axial direction x. Further, interference between the fastener 400 and the nozzle portion 140 and the confluence portion 150 can be avoided, enabling the elastic sleeve 200 located at the nozzle portion 140 and the confluence portion 150 to undergo elastic deformation.

[0065] Referring to Figure 2 As shown, the medium nozzle 100 further has an anti - detachment portion 170. In the axial direction x, both ends of the anti - detachment portion 170 are respectively connected to the confluence portion 150 and the first connection portion 160. The outer diameter of the anti - detachment portion 170 gradually increases from the confluence portion 150 towards the first connection portion 160, and the maximum outer diameter of the anti - detachment portion 170 is D 3 , and the outer diameter of the first connection portion 160 is D 4 , satisfying: D 3 >D 4 .

[0066] In this embodiment, when the maximum outer diameter D 3 of the anti - detachment portion 170 and the outer diameter D 4 of the first connection portion 160 satisfy: D 3 >D 4 , the connection between the elastic sleeve 200 and the medium nozzle 100 can be further strengthened by the anti - detachment portion 170, preventing the elastic sleeve 200 from moving relative to the medium nozzle 100 along the axial direction x. At the same time, the anti - detachment portion 170 can play a limiting role for the fastener 400, preventing the fastener 400 from moving towards the nozzle portion 140 along the axial direction x, avoiding the elastic sleeve 200 from slipping off the medium nozzle 100. Further, since the outer diameter of the anti - detachment portion 170 gradually increases from the confluence portion 150 towards the first connection portion 160, in this way, when the elastic sleeve 200 needs to be replaced, the installation and disassembly of the elastic sleeve 200 can be facilitated.

[0067] Specifically, in this embodiment, the installation method of the elastic sleeve 200 is as follows: soften the elastic sleeve 200 at about 80°C, put it on the medium nozzle 100, and fix the elastic sleeve 200 at the first connecting portion 160 through the fastener 400. When the temperature drops to room temperature, since the maximum outer diameter of the anti-disengagement portion 170 is greater than the outer diameter of the first connecting portion 160, the elastic sleeve 200 will abut against the anti-disengagement portion 170 to generate frictional force. At the same time, during the process of the elastic sleeve 200 cooling down, appropriate tensile deformation occurs, so that the elastic sleeve 200 can closely fit on the surface of the medium nozzle 100, thereby realizing the anti-disengagement of the elastic sleeve 200 and the medium nozzle 100.

[0068] Continue to refer to Figure 2 As shown, the medium nozzle 100 further has a second connecting portion 180 and a wrenching portion 190. The two ends of the wrenching portion 190 along the axial direction x are respectively connected to the second connecting portion 180 and the first connecting portion 160. The inflow channel 110 penetrates through the second connecting portion 180, and the surface of the second connecting portion 180 has an external thread. The outer diameter of the wrenching portion 190 is D 5 , satisfying: D 5 > D 3 .

[0069] In this embodiment, since the surface of the second connecting portion 180 has an external thread, the second connecting portion 180 can be threadedly connected to the activated medium delivery pipe to realize the connection between the medium nozzle 100 and the activated medium delivery pipe. At the same time, since the inflow channel 110 penetrates through the second connecting portion 180, when the medium nozzle 100 is connected to the activated medium delivery pipe, it is convenient for the activated medium to flow into the inflow channel 110 through the activated medium delivery pipe. Further, since the outer diameter D 5 of the wrenching portion 190 and the maximum outer diameter D 3 of the anti-disengagement portion 170 satisfy: D 5 > D 3 , it is possible to provide a screwing position for the connection between the second connecting portion 180 and the activated medium delivery pipe through the wrenching portion 190, so as to facilitate the connection between the second connecting portion 180 and the activated medium delivery pipe, and at the same time, it is possible to avoid interference of the anti-disengagement portion 170 during the screwing process.

[0070] The tailings thickening equipment involved in the embodiment of the present application includes the above-mentioned pulp-making activation device.

[0071] In the tailings thickening equipment of the present application, since the above-mentioned pulp-making activation device can reduce the probability of sand grains flowing back into the pulp-making activation device, the pulp is not likely to form a hard crust and accumulate at the bottom of the bin of the tailings thickening equipment of the present application. Thus, the tailings thickening equipment of the present application can have a high sand discharging efficiency.

[0072] Specifically, in this embodiment, the tailings thickening equipment is a vertical sand bin. The vertical sand bin can achieve the dehydration and thickening of the tailings slurry, improve the concentration of the low-concentration tailings slurry, and meet the requirements of underground filling. It is a typical gravity thickening and dehydration equipment. The pulp-making activation device is arranged at the position corresponding to the sedimentation area at the bottom of the vertical sand bin.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0074] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A pulping activation device, characterized in that: Having an axial direction, a radial direction and a circumferential direction, the pulping activation device comprises: A medium nozzle, provided with an inlet channel, a converging groove and a plurality of diverting channels, wherein the inlet channel is extended along the axial direction, the plurality of diverting channels are arranged at intervals along the circumferential direction, and one end of each of the diverting channels is communicated with the inlet channel, and the converging groove is arranged on the surface of the medium nozzle along the circumferential direction; An elastic sleeve is sleeved on one end of the medium nozzle away from the inlet channel along the axial direction. In the axial direction, the surface of the medium nozzle located on the side of the confluence groove away from the inlet channel is fitted with the elastic sleeve. The elastic sleeve covers the confluence groove to form a confluence cavity between the confluence groove and the elastic sleeve. The other end of each of the diversion channels is connected to the confluence cavity.

2. The pulping activation device according to claim 1, characterized in that: The central axis of the inlet channel coincides with the central axis of the medium nozzle, and each of the diversion channels is inclined from the central axis of the medium nozzle toward the confluence groove. The angle between the central axis of each of the diversion channels and the central axis of the medium nozzle is α, satisfying: 15°≤α≤30°.

3. The pulping activation device according to claim 1, characterized in that: The diameter of the inlet channel is D1, the diameter of the branch channel is D2, and the number of the branch channels is n, satisfying: Wherein, n is a natural number, and n≥2, γ is a diversion coefficient, and 1.2≤γ≤1.

5.

4. The pulping activation device according to claim 1, characterized in that: The wall thickness of the elastic sleeve is L, which satisfies: 3.5mm≤L≤5mm.

5. The pulping activation device according to claim 1, characterized in that: The medium nozzle is made of stainless steel, and the surface of the medium nozzle is treated for wear resistance by boronization process. The Vickers hardness HV of the surface of the medium nozzle meets: HV ≥ 1200kg / mm 2 .

6. The pulping activation device according to any one of claims 1 to 5, characterized in that: The medium nozzle comprises a nozzle portion and a confluence portion, wherein the nozzle portion is arranged at one end of the medium nozzle away from the inlet channel along the axial direction, and the end of the nozzle portion close to the inlet channel along the axial direction is connected to the confluence portion, the confluence groove is arranged on the surface of the confluence portion, and the elastic sleeve is simultaneously sleeved on the outside of the nozzle portion and the confluence portion.

7. The pulping activation device according to claim 6, characterized in that: The medium nozzle also has a first connecting portion, which is connected to an end of the confluence portion away from the nozzle portion along the axial direction. The elastic sleeve is simultaneously sleeved outside the nozzle portion, the confluence portion and the first connecting portion. The pulping activation device also includes a fastener, which is sleeved outside the elastic sleeve and located at the first connecting portion.

8. The pulping and activation device according to claim 7, characterized in that: The medium nozzle also has an anti-slip portion. In the axial direction, two ends of the anti-slip portion are respectively connected to the confluence portion and the first connecting portion. The outer diameter of the anti-slip portion gradually increases from the confluence portion toward the first connecting portion. The maximum outer diameter of the anti-slip portion is D3, and the outer diameter of the first connecting portion is D4, satisfying: D3>D4.

9. The pulping and activation device according to claim 8, characterized in that: The medium nozzle also has a second connecting part and a twisting part. The two ends of the twisting part along the axial direction are respectively connected to the second connecting part and the first connecting part. The inlet channel runs through the second connecting part, and the surface of the second connecting part has an external thread. The outer diameter of the twisting part is D5, satisfying: D5>D3.

10. A tailings thickening device, characterized in that: include: A pulping and activation device as described in any one of claims 1 to 9.

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