Rake pressing prevention device of deep-cone thickener for mine paste filling, deep-cone thickener and rake pressing prevention working method

Abstract

The embodiment of the invention discloses a deep-cone thickener rake pressing prevention device for mine paste filling, a deep-cone thickener and a rake pressing prevention working method, and relates to the technical field of mine equipment, and the deep-cone thickener rake pressing prevention device comprises a top rotation assembly which is coaxially connected to a driving main shaft with a rake frame and is located above the rake frame, and the top rotation assembly is provided with a water injection port and a water outlet; the high-pressure pipeline assembly comprises a main pipeline and branch pipelines, the upper end of the main pipeline is connected to the water outlet and extends downwards to the surface of the scraper blade of the harrow frame along the outer side of the driving main shaft, the branch pipelines are arranged on the surface of the scraper blade along the trend of the scraper blade, and a plurality of connectors are arranged on the side walls of the branch pipelines along the trend of the scraper blade; the ends, close to the driving main shaft, of the branch pipelines communicate with the lower end of the main pipeline, a plurality of steel ball nozzles are arranged on the surface of the scraper in the distribution direction of the branch pipelines, water inlets of the steel ball nozzles are correspondingly connected to connectors of the branch pipelines, and water spraying openings of the steel ball nozzles face the bottom of the tailing cone pool.

Description

Technical Field

[0001] The invention relates to the technical field of mining equipment, and in particular to a deep cone thickener anti-pressure rake device for filling mining paste, a deep cone thickener and an anti-pressure rake working method. Background Art

[0002] In the paste filling process after mining, the deep cone thickener plays a key role. Its main responsibility is to efficiently concentrate materials such as tailings for subsequent processing. However, in the actual operation of the current deep cone thickener, there is at least one rake pressure problem that needs to be solved.

[0003] The rake pressing problem has always been a key obstacle to the stable operation of the deep cone thickener. When the deep cone thickener is working, due to the characteristics of the tailings themselves and the complex material flow environment inside the equipment, the tailings are very likely to accumulate in large quantities around the rake frame. As the amount of accumulation continues to increase, the resistance on the rake frame continues to increase, and the torque also rises accordingly. Once the torque reaches the limit that the rake frame can withstand, it will cause a rake pressing failure. Rake pressing will not only cause the equipment to be forced to shut down for maintenance, greatly affecting production efficiency, but also significantly increase production costs. What's more serious is that frequent rake pressing may even cause irreversible damage to the equipment structure, greatly shortening the service life of the equipment. Summary of the invention

[0004] In view of this, the embodiments of the present invention provide a deep cone thickener anti-pressure rake device for mining paste filling, a deep cone thickener and an anti-pressure rake working method, which can be applied to the deep cone thickener to improve the existing rake pressure problem, and can also avoid the direct scouring of the rake frame main shaft and other structures by high-pressure water, fundamentally eliminating the problems of rake frame corrosion, cracks and fatigue damage caused by high-pressure water scouring.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: A deep cone thickener anti-pressure rake device for filling mining paste, comprising: A rake frame, including a frame configured to be connected to the drive spindle; A top rotary assembly is coaxially connected to the driving main shaft with the rake frame and is located above the rake frame. A water inlet and a water outlet are provided on the top rotary assembly; A high-pressure pipeline assembly includes a main pipeline and a branch pipeline, wherein the upper end of the main pipeline is connected to the water outlet and extends downward along the outer side of the driving main shaft to the scraper surface of the rake frame, the branch pipeline is arranged on the surface of the scraper along the direction of the scraper, and a plurality of interfaces are arranged on the side wall of the branch pipeline along the direction of the scraper, the end of the branch pipeline close to the driving main shaft is connected to the lower end of the main pipeline, and a plurality of steel ball nozzles are arranged on the surface of the scraper along the arrangement direction of the branch pipeline, the water inlet of the steel ball nozzle is correspondingly connected to the interface of the branch pipeline, and the water spraying port of the steel ball nozzle is arranged toward the bottom of the tailings cone pool.

[0006] Optionally, the top rotary assembly comprises: a shell, a side wall of the shell having a water injection port; An upper fixing ring, a swivel center joint and a lower fixing ring are arranged inside the housing, and the upper fixing ring, the swivel center joint and the lower fixing ring are fixedly connected to the driving main shaft in sequence from top to bottom, and are rotatably arranged relative to the housing; The swivel center joint is connected to the driving main shaft through the upper fixing ring. The swivel center joint is a columnar structure. An axial center hole is provided at the center of the columnar structure. The axial center hole is configured to be connected with the driving main shaft. At least one annular groove is provided on the outer circumferential surface of the swivel center joint. The groove is used to form a high-pressure water channel. The water inlet end of the high-pressure water channel is connected to the water injection port. A water outlet is provided on the swivel center joint from the high-pressure water channel downward. A plurality of pipeline connection channels are arranged on the lower fixing ring corresponding to the water outlets, and the upper ends of the plurality of main pipelines are connected to the pipeline connection channels.

[0007] Optionally, an upper moving ring and a lower moving ring are further provided between the swivel center joint and the side wall of the shell, the upper moving ring and the lower moving ring are fixedly sleeved on the outer circumferential surface of the swivel center joint, and rotate synchronously with the swivel center joint and the rake frame, the upper moving ring and the lower moving ring are correspondingly arranged up and down, and there is a gap between the upper moving ring and the lower moving ring in the axial direction, the gap forms a water inlet channel docking with the water inlet end of the high-pressure water channel, and the water inlet end of the swivel center joint is connected with the water injection port via the water inlet channel; An upper static ring is correspondingly provided above the upper dynamic ring, a first accommodating space is reserved between the upper dynamic ring and the upper static ring, a plurality of first compression springs are provided in the first accommodating space, the lower ends of the first compression springs are in contact with the upper surface of the upper dynamic ring, and the upper ends of the first compression springs are in contact with the lower surface of the upper static ring through the first gasket and the first wear-resistant rubber ring in sequence; A lower static ring is correspondingly provided below the lower moving ring, a second accommodating space is reserved between the lower moving ring and the lower static ring, a plurality of second compression springs are provided in the second accommodating space, the lower ends of the second compression springs abut against the lower surface of the lower moving ring, and the lower ends of the second compression springs contact with the upper surface of the lower static ring through the second gasket and the second wear-resistant rubber ring in sequence; The shell includes an annular side wall, the top and bottom of the annular side wall respectively have flanges bent toward the driving spindle, the top flange of the shell abuts against the top of the upper stationary ring, and the bottom flange of the shell abuts against the bottom of the lower stationary ring.

[0008] Optionally, a first sealing ring is nested between the upper static ring and the side wall of the outer shell, and a second sealing ring is nested between the lower static ring and the side wall of the outer shell.

[0009] Optionally, the lower fixing ring is an annular structure, and four water outlets are evenly distributed on the bottom of the lower fixing ring, each water outlet is connected to the upper end of a steel pipe, and the high-pressure water flowing into the rotating center joint is evenly diverted to the four steel pipes and transported to the steel ball nozzle on the rake frame.

[0010] Optionally, the steel ball nozzle comprises: a nozzle housing, which is a cylindrical structure with a hole inside, a connecting pipe is provided at the front end of the nozzle housing, a water inlet channel connected to the hole is provided at the center of the connecting pipe, and a first steel ball is provided at the entrance of the junction of the water inlet channel and the hole; The main spring is a cylindrical coil spring installed in the main channel inside the nozzle housing. The main channel is a part of the hole. One end of the main spring rests on the step surface at the rear end of the hole inside the nozzle housing, and the other end contacts the first steel ball.

[0011] A first pressure adjusting nut is threadedly connected to the rear end of the nozzle housing and corresponds to the main channel of the nozzle housing axially front and back. A first overflow channel is provided in the center of the first pressure adjusting nut. A first auxiliary spring is provided in the center of the screw of the first pressure adjusting nut. The first overflow channel is communicated with the cavity where the first auxiliary spring is located. A second steel ball is provided at one end of the first auxiliary spring close to the main channel. A threaded section is provided in the center of the screw of the first pressure adjusting nut. An adjusting locking screw is provided in the threaded section. One end of the adjusting locking screw abuts against the second steel ball, and the other end of the adjusting locking screw extends into the main channel and is inserted into the main spring.

[0012] Optionally, a plurality of stepped through holes are provided on the side wall of the nozzle housing in a circumferential direction, the axial diameter of each of the stepped through holes increases sequentially from the inside to the outside, a third steel ball is provided on the step surface at the bottom of each of the stepped through holes, a second auxiliary spring is provided above the third steel ball, a second pressure adjusting nut is threadedly connected in each of the stepped through holes, a second overflow channel is provided at the center of the second pressure adjusting nut, and the second auxiliary spring is penetrated into the second overflow channel.

[0013] Optionally, the scraper of the rake frame includes a first scraper, a second scraper, a third scraper and a fourth scraper connected to the driving main shaft and arranged crosswise, and the first scraper, the second scraper, the third scraper and the fourth scraper are respectively provided with a plurality of steel ball nozzles evenly spaced on the same side.

[0014] In a second aspect, an embodiment of the present invention provides a deep cone thickener, comprising: a bridge; A driving mechanism is arranged on the bridge frame, and the driving mechanism includes a driving main shaft, and the driving main shaft is connected to the anti-pressure rake device described in any one of the first aspects.

[0015] In a third aspect, the present invention also provides an embodiment of a deep cone thickener anti-pressure rake working method, which is implemented by using the deep cone thickener anti-pressure rake device for mining paste filling according to any one of the first aspects, and the method comprises: Start the driving device to drive the rake frame and the top rotary assembly to rotate around the driving main shaft, and at the same time start the external high-pressure water supply equipment to allow high-pressure water to enter from the water injection port of the top rotary assembly.

[0016] After high-pressure water enters the top rotary assembly, it flows into the high-pressure water channel on the outer circumferential surface of the rotary center joint through the water inlet channel. The high-pressure water converges in the high-pressure water channel and flows to the water outlet of the rotary center joint.

[0017] The high-pressure water flowing out of the water outlet of the rotary center joint enters the main pipeline of the high-pressure pipeline assembly through the pipeline connection channel on the lower fixed ring. The main pipeline extends downward along the outer side of the driving spindle to the scraper surface of the rake frame, and the high-pressure water is transported downward; The high-pressure water entering the main pipeline flows into the branch pipeline at the lower end of the main pipeline, and the high-pressure water enters the water inlet of the steel ball nozzle through multiple interfaces on the side wall of the branch pipeline; When high-pressure water enters the steel ball nozzle, the pressure pushes the main spring and the first steel ball, causing the high-pressure water to spray from the water outlet of the steel ball nozzle toward the bottom of the tailings cone pool, flushing and disturbing the tailings to prevent rake pressure.

[0018] Optionally, the method further comprises: when the high-pressure water enters the high-pressure water channel of the rotary center joint, the upper movable ring and the lower movable ring rotate synchronously with the rotary center joint to ensure that the water inlet channel is always connected with the water inlet end of the high-pressure water channel to ensure smooth inflow of the high-pressure water; The first compression spring between the upper moving ring and the upper static ring and the second compression spring between the lower moving ring and the lower static ring respectively play an elastic supporting role for the upper moving ring and the lower moving ring, so that the upper moving ring and the lower moving ring maintain a stable sealing state during rotation.

[0019] Optionally, during the operation of the deep cone thickener, when it is necessary to adjust the injection pressure of the steel ball nozzle, the method further comprises: rotating the first pressure adjustment nut to change its axial position at the rear end of the nozzle housing, thereby adjusting the compression degree of the first auxiliary spring, controlling the position of the second steel ball, thereby adjusting the flow area connected to the first overflow channel, and realizing the adjustment of the injection pressure of the main channel of the steel ball nozzle; At the same time, by rotating the adjusting locking screw, the adjusting locking screw is moved in the threaded section of the first pressure adjusting nut, and the position of the second steel ball is further fine-tuned to accurately control the injection pressure.

[0020] Optionally, during the operation of the deep cone thickener, when it is necessary to adjust the side injection pressure of the steel ball nozzle, the method further includes: for the multiple stepped through holes on the side wall of the nozzle housing, by rotating the second pressure adjusting nut, changing its axial position in the stepped through holes, adjusting the compression degree of the second auxiliary spring, and then controlling the position of the third steel ball, adjusting the flow area between the second overflow channel and the main channel, so as to achieve the adjustment of the side injection pressure.

[0021] Optionally, before the deep cone thickener is shut down, the method further comprises: gradually reducing the supply pressure and flow of high-pressure water to gradually reset the main spring, the first auxiliary spring and the second auxiliary spring in the steel ball nozzle, pushing the first steel ball, the second steel ball and the third steel ball back to the initial closed position to prevent tailings from flowing back into the nozzle and the pipeline during the shutdown process; Turn off the high pressure water supply, stop injecting water into the top swing assembly, and then stop the drive to stop the rake frame and top swing assembly from rotating.

[0022] The deep cone thickener anti-pressure rake device, deep cone thickener and anti-pressure rake working method for mine paste filling provided in the embodiments of the present invention can be installed and applied to the deep cone thickener by developing accessories matching the deep cone thickener. When the deep cone thickener is working, the top rotating assembly coaxially connected to the driving main shaft with the rake frame can be used to allow high-pressure water to enter the high-pressure pipeline assembly through the top rotating assembly and then be transported downward to the branch pipeline arranged on the scraper surface of the rake frame. Since the water spray port of the steel ball nozzle is arranged toward the bottom of the tailings cone pool, the high-pressure water entering the branch pipeline is sprayed from the steel ball nozzle to the bottom of the tailings cone pool, so that the high-pressure water can directly act on the area prone to tailings accumulation to flush and disturb the tailings. Continuous high-pressure water jetting can effectively break up and dilute the tailings accumulated around the rake frame, avoiding the increase of rake frame resistance and torque caused by a large amount of tailings accumulation, thereby fundamentally solving the rake pressure problem and ensuring the stable operation of the equipment.

[0023] In addition, by setting the high-pressure pipeline assembly on the scraper surface of the rake frame instead of the traditional inside of the rake frame, and the main pipeline extending downward along the outside of the driving main shaft, the branch pipeline is also laid on the scraper surface, so that the high-pressure water flow is completely isolated from the rake frame main shaft and the rake frame structure, and the hidden danger of high-pressure water long-term scouring of the rake frame main shaft and scraper and other structures is completely eliminated, and the corrosion caused by the direct scouring of the rake frame main shaft and other structures by high-pressure water is effectively avoided, thereby eliminating the problems of cracks and fatigue damage caused by corrosion to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of an embodiment of a deep cone thickener anti-pressure rake device for filling mining paste of the present invention; Figure 2 for Figure 1 A top view of an embodiment of a middle anti-pressure rake device; Figure 3 A schematic diagram of the structure of an embodiment of the top rotary assembly of the present invention Figure 4 This is a schematic structural diagram of an embodiment of a steel ball nozzle in the present invention; Figure 5 for Figure 4 Middle AA section view; Figure 6 It is a structural schematic diagram of an embodiment of a deep cone thickener in the present invention; Figure 7 It is a schematic flow chart of an embodiment of a working method of an anti-pressure rake for a deep cone thickener according to the present invention. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] It should be clear that the described embodiment is only a component embodiment of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1 and Figure 2 , an embodiment of the present invention provides an anti-pressure rake device of a deep cone thickener for filling a mine paste, comprising: a rake frame 1, configured to be connected to a driving spindle 2. The rake frame 1 can be made of special alloy steel to improve its mechanical properties. The rake frame 1 can be tightly connected to the driving spindle 2 through a connecting component, and the connecting component can be composed of high-strength bolts, nuts and connecting parts. The connection between the rake frame 1 and the driving spindle 2 must be stable and reliable. In order to highlight the innovative purpose of the invention, the specific connection between the rake frame 1 and the driving spindle 2 will not be described in detail, and you can refer to the introduction of the existing deep cone thickener related content.

[0029] The top rotary assembly 3 is coaxially connected to the driving spindle 2 with the rake frame 1 and is located above the rake frame 1. The top rotary assembly 3 is provided with a water injection port 31 and a water outlet 32. The housing 33 of the top rotary assembly 3 can be made of cast steel and formed by a precision casting process, and then finely machined, including turning, grinding and other processes, to ensure that its dimensional accuracy is controlled within the allowable tolerance range, thereby ensuring good sealing. The water injection port 31 is specifically arranged on the side wall of the housing 33 and is configured to match the external high-pressure water supply pipeline for convenient quick connection. During actual installation, a sealing gasket can be placed at the connection between the water injection port 31 and the high-pressure water pipeline. The sealing gasket can be made of a high-pressure resistant and corrosion-resistant rubber material, such as fluororubber. Then use the connector to tighten it. During the tightening process, the tightening torque of the bolts is strictly controlled to ensure that the connection between the water injection port 31 and the high-pressure water pipeline is tight and there is no leakage.

[0030] The high-pressure pipeline assembly includes a main pipeline 41 and a branch pipeline 42. The main pipeline 41 and the branch pipeline 42 can be made of seamless steel pipes. The wall thickness of the seamless steel pipe is required to be able to withstand the water pressure of a predetermined pressure, and the inner wall thereof is treated with anti-corrosion and has good corrosion resistance. The upper end of the main pipeline 41 is connected to the water outlet 32, and extends downward along the outer side of the driving main shaft 2 to the surface of the scraper 11 of the rake frame 1. The branch pipeline 42 is arranged on the surface of the scraper 11 along the direction of the scraper 11, and a plurality of interfaces are arranged on the side wall of the branch pipeline 42 along the direction of the scraper 11; the upper end of the main pipeline 41 can be connected to the water outlet 32 ​​of the top rotary assembly 3 by welding or special sealing pipe fittings to ensure that the connection can withstand the impact of high-pressure water without breaking or leaking. On the path where the main pipeline 41 extends downward along the outer side of the driving main shaft 2, a plurality of pipe clamps can be used to fix the main pipeline 41 to the outer side of the driving main shaft 2. One end of the branch pipeline 42 close to the driving main shaft 2 is connected to the lower end of the main pipeline 41, and a plurality of steel ball nozzles 7 are provided on the surface of the scraper 11 along the layout direction of the branch pipeline 42. The water inlet of the steel ball nozzle 7 is correspondingly connected to the interface of the branch pipeline 42, and the plurality of interfaces on the side wall of the branch pipeline 42 are connected to the water inlet of the steel ball nozzle 7 by threaded connection or welding, and the water spray port of the steel ball nozzle 7 is arranged toward the bottom of the tailings cone pool, so as to effectively flush and disturb the tailings when the deep cone thickener is working, and prevent the tailings from accumulating at the bottom and causing rake pressure.

[0031] In some deep cone thickeners, if the pipeline is set inside the rake frame 1, the high-pressure water flow will directly contact the main shaft of the rake frame 1 and the structure of the rake frame 1. Under the scouring of high-pressure water for a long time, the main shaft of the rake frame 1 and the structure of the rake frame 1 are very likely to corrode. Over time, the corrosion problem will further cause cracks, reduce the structural strength, and then cause fatigue damage.

[0032] In the deep cone thickener anti-pressure rake device for filling mining paste provided in the embodiment of the present invention, the method of embedding the high-pressure water passage into the main shaft of the rake frame 1 and the interior of the rake frame 1 is abandoned, and an external steel pipe is arranged along the driving main shaft 2 and the outside of the rake frame 1. In this way, during the high-pressure water delivery process, water is completely avoided from flowing through the main shaft of the rake frame 1 and the interior of the rake frame 1, fundamentally eliminating the corrosion, cracking and fatigue damage problems of the main shaft of the rake frame 1 and the structure of the rake frame 1 caused by long-term scouring of high-pressure water, effectively ensuring the rigidity and structural integrity of the main shaft of the rake frame 1 and the rake frame 1, greatly extending the service life of the equipment, effectively improving the stability and reliability of the equipment, and reducing the equipment failures and maintenance costs caused by internal structural damage.

[0033] In order to help understand the technical solution and its technical effect provided by the embodiment of the present invention, the working principle thereof is introduced as follows: During the operation of the deep cone thickener, when the driving spindle 2 starts to rotate driven by the driving mechanism, the rake frame 1 rotates synchronously therewith. The scraper 11 on the rake frame 1 stirs and pushes the tailings deposited at the bottom of the deep cone thickener. Since the tailings are easily accumulated during the sedimentation process, if they are not handled in time, it may cause the rake pressure phenomenon. At this time, since the deep cone thickener is equipped with the anti-pressure rake device provided by the embodiment of the present invention, high-pressure water enters the top rotary assembly 3 from the external high-pressure water supply equipment through the water injection port 31. After the high-pressure water enters, it flows out from the water outlet 32 ​​of the rotary center joint and enters the high-pressure pipeline assembly. When the driving spindle 2 rotates, the synchronous rotation of the top rotary assembly 3 and the rake frame 1 can ensure the operation coordination of the entire anti-pressure rake device. During the rotation process, the water injection port 31 on the side wall of the top rotary assembly 3 can continuously and stably dock with the external high-pressure water supply pipeline to ensure the uninterrupted entry of high-pressure water. During the downward transportation of high-pressure water, since the top rotating assembly 3 rotates coaxially with the rake frame 1, the high-pressure water can enter the high-pressure pipeline assembly more smoothly after flowing out from the water outlet 32 ​​of the top rotating assembly 3. The upper end of the main pipeline 41 of the high-pressure pipeline assembly is always closely connected with the water outlet 32 ​​of the top rotating assembly 3. If the two do not rotate coaxially, the high-pressure water may cause poor water flow, unstable pressure, and even leakage during the transportation process due to factors such as distortion and shaking of the pipeline. By setting the top high-pressure assembly to rotate coaxially with the rake frame 1, it is ensured that the high-pressure water can stably transition from the top rotating assembly 3 to the high-pressure pipeline assembly.

[0034] After the high-pressure water flows downward along the main pipe 41 and the branch pipe 42 and enters the steel ball nozzle 7, the high-pressure water is sprayed from the water spray port of the steel ball nozzle 7 toward the bottom of the tailings cone pool. The sprayed high-pressure water effectively flushes and disturbs the tailings, breaks up the accumulated tailings, and makes it flow again, which is convenient for the scraper 11 of the rake frame 1 to stir and transport, prevents the tailings from accumulating at the bottom and causing the rake to be pressed, and ensures the stable operation of the deep cone thickener.

[0035] See also Figure 2 In some embodiments, the scraper 11 of the rake frame 1 is made of a high-strength and corrosion-resistant metal material, such as stainless steel. The scraper 11 includes a first scraper 11, a second scraper 11, a third scraper 11, and a fourth scraper 11 connected to the driving spindle 2 and arranged in a cross pattern. This cross-pattern layout enables the rake frame 1 to more comprehensively cover the tailings area at the bottom of the deep cone thickener when rotating, thereby improving the mixing and conveying efficiency of the tailings.

[0036] See also Figure 3In some embodiments, the top rotary assembly 3 includes: a housing 33, the housing 33 includes an upper housing and a lower housing, and a water injection port 31 is provided on the side wall of the housing 33; an upper fixing ring 34, a rotary center joint 35 and a lower fixing ring 36 are arranged inside the housing 33, and the upper fixing ring 34, the rotary center joint 35 and the lower fixing ring 36 are fixedly connected to the driving spindle 2 in sequence from top to bottom, and are rotatably arranged relative to the housing 33. The rotary center joint 35 is connected to the driving spindle 2 through the upper fixing ring 34, and the rotary center joint 35 is a columnar structure, and an axial center hole is provided at the center of the columnar structure, and the axial center hole is configured to be matched and connected with the driving spindle 2, and the axial center hole and the driving spindle 2 can be installed in an interference fit manner. At least one annular groove is provided on the outer circumferential surface of the rotating center joint 35, and the groove is used to form a high-pressure water channel 37. The water inlet end of the high-pressure water channel 37 is connected to the water injection port 31 through the water inlet channel, and a water outlet 32 ​​is provided on the rotating center joint 35 from the high-pressure water channel downward.

[0037] The lower fixing ring 36 is provided with a plurality of pipeline connection channels 38 corresponding to the water outlet 32 ​​, and the upper ends of the plurality of main pipelines 41 are connected to the pipeline connection channels 38 to ensure that high-pressure water can stably enter the main pipeline 41 .

[0038] In some embodiments, an upper moving ring 391 and a lower moving ring 392 are further provided between the rotating center joint 35 and the side wall of the housing 33. The upper moving ring 391 and the lower moving ring 392 are fixedly sleeved on the outer circumferential surface of the rotating center joint 35 and rotate synchronously with the rotating center joint 35 and the rake frame 1. The upper moving ring 391 and the lower moving ring 392 are correspondingly arranged up and down, and there is a gap between the upper moving ring 391 and the lower moving ring 392 in the axial direction. The gap forms a water inlet channel docking with the water inlet end of the high-pressure water channel. The water inlet end of the rotating center joint 35 is connected with the water injection port 31 via the water inlet channel. An upper static ring 393 is correspondingly provided above the upper moving ring 391, and a first accommodating space is reserved between the upper moving ring 391 and the upper static ring 393. A plurality of first compression springs 394 are provided in the first accommodating space, and the lower end of the first compression spring 394 abuts against the upper surface of the upper moving ring 391, and the upper end of the first compression spring 394 contacts with the lower surface of the upper static ring 393 through the first gasket 395; in some embodiments, the first gasket 395 is a steel gasket, and the first gasket 395 contacts with the lower surface of the upper static ring 393 through the first wear-resistant rubber ring 396, and the first wear-resistant rubber ring 396 is used to provide a durable sealing effect to prevent leakage of high-pressure water; the first gasket 395 is used to fix the wear-resistant rubber ring and also acts as a buffer.

[0039] A lower static ring 492 is correspondingly provided below the lower moving ring 392, and a second accommodating space is reserved between the lower moving ring 392 and the lower static ring 492, and a plurality of second compression springs 494 are provided in the second accommodating space, and the lower end of the second compression spring 494 abuts against the lower surface of the lower moving ring 392, and the lower end of the second compression spring 494 contacts with the upper surface of the lower static ring 492 through the second gasket 495; specifically, the second gasket 495 contacts with the upper surface of the lower static ring 49 through the second wear-resistant rubber ring 496, and the second gasket 495 and the second wear-resistant rubber ring 496 have the same function as the first gasket 395 and the first wear-resistant rubber ring 396, and the above description can be referred to.

[0040] The outer shell 33 includes an annular side wall, and the top and bottom of the annular side wall respectively have flanges bent toward the driving spindle 2. The top flange of the outer shell 33 abuts against the top of the upper static ring 393, and the bottom flange of the outer shell 33 abuts against the bottom of the lower static ring 492.

[0041] In this embodiment, an upper moving ring 391 and a lower moving ring 392 are arranged between the rotary center joint 35 and the side wall of the housing 33. The upper moving ring 391 and the lower moving ring 392 are tightly fixedly sleeved on the outer circumference of the rotary center joint 35, and rotate synchronously with the rotary center joint 35 and the rake frame 1. Specifically, in the installation link, the upper moving ring 391 and the lower moving ring 392 can be tightly fixedly sleeved on the outer circumference of the rotary center joint 35 by key connection. The upper moving ring 391 and the lower moving ring 392 are arranged in correspondence with each other up and down, and there is a gap between the upper moving ring 391 and the lower moving ring 392 in the axial direction, and the gap forms a water inlet channel that docks with the water inlet end of the high-pressure water channel (located outside the groove on the outer circumference of the rotary center joint 35). The water inlet end of the rotary center joint 35 is connected with the water injection port 31 on the side wall of the housing 33 through the water inlet channel to ensure a smooth inflow path of high-pressure water.

[0042] An upper static ring 393 is correspondingly arranged above the upper moving ring 391, and a first accommodation space is reserved between the upper moving ring 391 and the upper static ring 393, and a plurality of first compression springs 394 are arranged in the first accommodation space. The lower end of the first compression spring 394 abuts against the upper surface of the upper moving ring 391, and the upper end of the first compression spring 394 is in close contact with the lower surface of the upper static ring 393 through the first gasket 395. During the operation of the deep cone thickener, when high-pressure water passes through the water inlet channel, the upper moving ring 391 and the lower moving ring 392 rotate with the rotary center joint 35, and the first compression spring 394 can adapt to the position change of the upper moving ring 391, always maintain close contact between the upper moving ring 391 and the upper static ring 393, prevent leakage of high-pressure water, and ensure the stability of high-pressure water delivery.

[0043] A lower static ring 492 is provided directly below the lower moving ring 392, and a second accommodation space is reserved between the lower moving ring 392 and the lower static ring 492. In the second accommodation space, a plurality of second compression springs 494 are also provided. The lower end of the second compression spring 494 abuts against the lower surface of the lower moving ring 392, and the lower end of the second compression spring 494 contacts the lower surface of the lower static ring 492 through the second gasket 495. Similar to the sealing principle at the upper moving ring 391, the second compression spring 494 can ensure a good sealing effect between the lower moving ring 392 and the lower static ring 492 during the rotation process, further enhancing the sealing performance of the entire device.

[0044] The housing 33 includes an annular side wall, and the top and bottom of the annular side wall respectively have flanges 331 bent toward the driving spindle 2. The flange 331 at the top of the housing 33 is tightly abutted against the top of the upper static ring 393, and the flange 331 at the bottom of the housing 33 is abutted against the bottom of the lower static ring 492, ensuring stable delivery and sealing of high-pressure water during operation of the device, and effectively preventing leakage.

[0045] In some embodiments, a first sealing ring 5 is nested between the upper static ring 393 and the side wall of the housing 33, and a second sealing ring 6 is nested between the lower static ring 492 and the side wall of the housing 33, which further enhances the sealing performance of the device and effectively prevents high-pressure water from leaking at the gap between the rotary center joint 35 and the housing 33. In actual operation, even under the long-term impact of high-pressure water, the first sealing ring 5 and the second sealing ring 6 can closely cooperate with the upper static ring 393, the lower static ring 492 and the housing 33, and work together with the first compression spring 394 and the second compression spring 494, greatly reducing the risk of water leakage, ensuring the stable operation of the device, reducing the risk of equipment failure caused by water leakage, and improving the reliability of the device.

[0046] Specifically, the lower fixed ring 36 is an annular structure, and four water outlets 32 are evenly distributed on the bottom of the lower fixed ring 36. Each water outlet 32 ​​is connected to the upper end of a steel pipe. When high-pressure water flows into the interior of the rotary center joint 35, it will converge to the water outlet 32 ​​through the pipeline connection channel 38 on the lower fixed ring 36, and then evenly diverted to the four steel pipes, and smoothly transported to the steel ball nozzle 7 on the rake frame 1. In the process of high-pressure water transportation, the lower fixed ring 36 plays a key role in stabilizing the distribution of water flow, ensuring that the four steel pipes obtain uniform water pressure and water volume, so that the steel ball nozzle 7 can comprehensively and effectively flush and disturb the tailings. In actual operation, the flow rate and pressure of high-pressure water can be appropriately adjusted according to the specific situation of the tailings and the working state of the thickener to achieve the best anti-caking and anti-pressure rake effect, and ensure the efficient and stable operation of the deep cone thickener.

[0047] In some embodiments, the steel ball nozzle 7 comprises: a nozzle housing 71 and a main spring 72. The nozzle housing 71 is a cylindrical structure with a hole inside. A connecting pipe 73 is arranged at the front end of the nozzle housing 71. A water inlet channel 74 connected to the hole is arranged at the center of the connecting pipe 73. A first steel ball 75 is arranged at the junction entrance of the water inlet channel 74 and the hole at the center of the connecting pipe 73. The main spring 72 is a cylindrical helical spring installed in the main channel 76 inside the nozzle housing 71. The main channel 76 is a part of the hole. One end of the main spring 72 abuts against the step surface at the rear end of the hole inside the nozzle housing 71, and the other end is in close contact with the first steel ball 75.

[0048] When high-pressure water flows from the top rotary assembly 3 to the steel ball nozzle 7 through the high-pressure pipeline assembly, the high-pressure water acts on the first steel ball 75, pushing it to compress the main spring 72, so that the high-pressure water smoothly enters the main channel 76 of the nozzle housing 71, and finally sprays out from the water spray port of the steel ball nozzle 7 toward the bottom of the tailings cone pool, thereby implementing strong flushing and effective disturbance on the tailings, effectively preventing the tailings from becoming compacted, and ensuring the normal operation of the rake frame 1.

[0049] The steel ball nozzle 7 is also equipped with a first pressure regulating nut 77. The first pressure regulating nut 77 is threadedly connected to the rear end of the nozzle housing 71, and corresponds to the main channel 76 of the nozzle housing 71 in the front and back axial direction. A first overflow channel 78 is provided at the center of the first pressure regulating nut 77, a first auxiliary spring 79 is provided at the center of the screw of the first pressure regulating nut 77, and the first overflow channel 78 is communicated with the cavity where the first auxiliary spring is located, a second steel ball 80 is provided at the first auxiliary spring 79 near one end of the main channel 76, and a threaded section is provided at the center of the screw of the first pressure regulating nut 77, and an adjusting locking screw 81 is provided in the threaded section, one end of the adjusting locking screw 81 is in contact with the second steel ball 80, and the other end of the adjusting locking screw 81 extends into the main channel 76 and is inserted into the main spring 72.

[0050] During the operation of the deep cone thickener, if the injection pressure of the steel ball nozzle 7 needs to be adjusted, the first pressure adjustment nut 77 can be rotated to change its axial position at the rear end of the nozzle housing 71, and then the compression degree of the first auxiliary spring can be adjusted to control the position of the second steel ball 80, and finally the flow area connected to the first overflow channel 78 can be adjusted to achieve the purpose of adjusting the injection pressure of the main channel 76 of the steel ball nozzle 7. At the same time, the locking screw 81 is rotated and adjusted to move in the threaded section of the first pressure adjustment nut 77, and the position of the second steel ball 80 is further fine-tuned, so as to achieve precise control of the injection pressure, ensure that the steel ball nozzle 7 can fit different working environments and tailings states, and maximize the anti-pressure rake effect.

[0051] Continue to view Figure 3In some embodiments, the side wall of the nozzle housing 71 of the steel ball nozzle 7 is provided with a plurality of stepped through holes along the circumferential direction, and the axial diameter of each stepped through hole increases from the inside to the outside. A third steel ball 82 is arranged on the stepped surface at the bottom of each stepped through hole, a second auxiliary spring 83 is arranged above the third steel ball 82, and a second pressure regulating nut 84 is threadedly connected in each stepped through hole, a second overflow channel 85 is arranged at the center of the second pressure regulating nut 84, and the second auxiliary spring 83 runs through the second overflow channel 85.

[0052] In actual operation, when high-pressure water successfully enters the main channel 76 of the nozzle housing 71, once the water pressure reaches the pressure threshold, it will push the third steel ball 82 to compress the second auxiliary spring 83, causing the high-pressure water to be ejected from the stepped through hole, thereby realizing the side injection function. When it is necessary to adjust the side injection pressure, the second pressure adjustment nut 84 can be rotated to change its axial position in the stepped through hole, thereby adjusting the compression degree of the second auxiliary spring 83, and then controlling the position of the third steel ball 82 to achieve the adjustment of the flow area between the second overflow channel 85 and the main channel 76. In this way, the steel ball nozzle 7 can flexibly adjust the pressure and water flow distribution of the side injection according to the actual distribution of the tailings and the working requirements of the thickener, effectively enhance the stirring effect on the tailings, further reduce the possibility of tailings compaction, and effectively ensure the stable operation of the deep cone thickener.

[0053] In addition, after the steel ball nozzle 7 is installed on the scraper 11 of the rake frame 1, when high-pressure water is sprayed out from the steel ball nozzle 7 at the end of the rake frame 1, the spray of water will generate reverse thrust, which directly acts on the rake frame 1. Specifically, since the nozzles are evenly arranged along the rake frame 1, and the axis of the water spray port of each steel ball nozzle 7 is 30° to 60° with the plane where the rake frame 1 is located, the reverse thrust is consistent with the clockwise rotation direction of the main shaft of the rake frame 1, which can better ensure that the reverse thrust is matched with the clockwise rotation direction of the main shaft of the rake frame 1, providing a more ideal auxiliary rotation power for the rake frame 1, and effectively reducing the rotation torque of the main shaft.

[0054] The distance L between adjacent steel ball nozzles 7 is generally controlled between 150 mm and 250 mm. When the distance between adjacent steel ball nozzles 7 is within this range, the reverse thrust generated by the water flow sprayed from each nozzle can be distributed relatively evenly on the rake frame 1, ensuring the smooth rotation of the rake frame 1, reducing equipment operation problems caused by uneven thrust, and achieving the effect of reducing the main shaft rotation torque and equipment energy consumption.

[0055] In some embodiments, the rake frame 1 comprises a first scraper, a second scraper, a third scraper and a fourth scraper connected to the driving spindle 2 and arranged in a cross pattern. On the same side of the first scraper, the second scraper, the third scraper and the fourth scraper, a plurality of steel ball nozzles 7 are evenly spaced.

[0056] When the driving device is started, driving the rake frame 1 and the top rotary assembly 3 to rotate around the driving main shaft 2, the steel ball nozzles 7 on each scraper 11 will continuously change position with the rotation of the rake frame 1, and carry out scouring and disturbance operations on the tailings at the bottom of the tailings cone pool from different angles in all directions. In view of the characteristics that the steel ball nozzles 7 are evenly spaced and distributed on each scraper 11, it can ensure that the tailings are effectively processed in the entire cone pool, effectively prevent the occurrence of local tailings compaction, maintain good fluidity of the tailings, reduce the running resistance of the rake frame 1, effectively prevent the occurrence of rake pressure problems, and significantly improve the working efficiency and stability of the deep cone thickener.

[0057] In addition, by reasonably setting the number of steel ball nozzles 7 and injection parameters on each scraper 11, the treatment effect on tailings can be further optimized to better meet the different mining paste filling process requirements. Furthermore, the replaceable steel ball nozzle 7 prolongs the life of the overall nozzle, thereby reducing replacement costs and downtime losses.

[0058] See also Figure 6 The present invention also provides a deep cone thickener according to an embodiment, comprising: a bridge frame 100; a driving mechanism (not shown in the figure) arranged on the bridge frame 100, the driving mechanism comprising a driving spindle 2, and the driving spindle 2 is connected to the anti-pressure rake device described in any of the aforementioned embodiments.

[0059] In this embodiment, the anti-pressure rake device described in any of the aforementioned embodiments is connected to the driving spindle 2 of the deep cone thickener. Since the top rotating assembly 3 in the anti-pressure rake device is coaxially connected to the rake frame 1 above the driving spindle 2, and the high-pressure pipeline assembly can effectively transport high-pressure water to the steel ball nozzle 7 on the surface of the scraper 11 of the rake frame 1, when the high-pressure water is sprayed through the steel ball nozzle 7 during the operation of the entire deep cone thickener, the tailings can be continuously flushed and disturbed, ensuring that the tailings are in a flowing state, and effectively avoiding the compaction of the tailings at the bottom of the deep cone thickener.

[0060] Furthermore, the sealing structure of the top rotary assembly 3 and the design of the external high-pressure water pipe greatly reduce the damage of high-pressure water to the driving spindle 2 and the rake frame 1. For example, the combined sealing structure of the dynamic ring, static ring and spring between the rotary center joint 35 and the housing 33 effectively prevents leakage of high-pressure water and avoids corrosion and damage to the equipment caused by leakage. The external high-pressure water pipe does not flow through the inside of the spindle and the rake frame 1, fundamentally eliminating the risk of scouring and corrosion of them by high-pressure water, thereby extending the service life of the equipment.

[0061] Furthermore, in terms of reducing energy consumption, the reverse thrust generated by the injection of the steel ball nozzle 7 is consistent with the rotation direction of the main shaft of the rake frame 1, which effectively reduces the rotation torque demand of the main shaft and significantly reduces the energy consumption of the drive mechanism.

[0062] Finally, during the shutdown process, by gradually reducing the high-pressure water pressure and flow, the spring in the steel ball nozzle 7 is reset to prevent the tailings from flowing back, ensuring the normal operation of the equipment when it is started again, reducing the maintenance frequency and cost of the equipment, and improving the overall reliability and stability of the deep cone thickener, so that it can adapt to the long-term and continuous needs of mine paste filling operations.

[0063] like Figure 7 As shown, in some embodiments, this embodiment provides a deep cone thickener anti-pressure rake working method, which is implemented by using the deep cone thickener anti-pressure rake device for mining paste filling described in any of the above embodiments, and the method includes: S110, starting the driving device to drive the rake frame 1 and the top rotary assembly 3 to rotate around the driving main shaft 2, and at the same time turning on the external high-pressure water supply equipment to allow high-pressure water to enter from the water injection port 31 of the top rotary assembly 3.

[0064] S120, after the high-pressure water enters the top rotary assembly 3, it flows into the high-pressure water channel on the outer circumferential surface of the rotary center joint 35 through the water inlet channel 74, and the high-pressure water converges in the high-pressure water channel and flows to the water outlet 32 ​​of the rotary center joint 35.

[0065] S130, the high-pressure water flowing out of the water outlet 32 ​​of the rotary center joint 35 enters the main line 41 of the high-pressure pipeline assembly through the pipeline connecting channel 38 on the lower fixed ring 36, and the main line 41 extends downward along the outer side of the driving spindle 2 to the surface of the scraper 11 of the rake frame 1, and the high-pressure water is transported downward; S140, the high-pressure water entering the main pipeline 41 flows into the branch pipeline 42 at the lower end of the main pipeline 41, and the high-pressure water passes through multiple interfaces on the side wall of the branch pipeline 42 and enters the water inlet of the steel ball nozzle 7 accordingly; S150, when the high-pressure water enters the steel ball nozzle 7, the pressure pushes the main spring 72 and the first steel ball 75, so that the high-pressure water is sprayed from the water spray port of the steel ball nozzle 7 toward the bottom of the tailings cone pool, flushing and disturbing the tailings to prevent raking. In actual operation, the pressure and flow of the high-pressure water can be appropriately adjusted according to the specific conditions of the tailings and the operating status of the thickener to achieve the best anti-raking effect.

[0066] In some embodiments, the method also includes: during the process of high-pressure water entering the high-pressure water channel of the rotating center joint 35, the upper moving ring 391 and the lower moving ring 392 rotate synchronously with the rotating center joint 35 to ensure that the water inlet channel 74 is always connected to the water inlet end of the high-pressure water channel to ensure the smooth flow of high-pressure water; the first compression spring 394 between the upper moving ring 391 and the upper static ring 393 and the second compression spring 494 between the lower moving ring 392 and the lower static ring 492 respectively play an elastic supporting role for the upper moving ring 391 and the lower moving ring 392, so that the upper moving ring 391 and the lower moving ring 392 maintain a stable sealing state during rotation.

[0067] In this embodiment, during the rotation of the rake frame 1, the water inlet channel 74 is always precisely connected with the water inlet end of the high-pressure water channel to ensure that the high-pressure water flows in smoothly without any hindrance. In addition, during the long-term operation of the equipment, even if there is a certain degree of vibration or slight wear of the components, the first compression spring 394 and the second compression spring 494 can also adaptively adjust the position of the upper dynamic ring 391 and the lower dynamic ring 392 to maintain a stable sealing state, prevent leakage of high-pressure water, and ensure the stable operation of the equipment.

[0068] In some embodiments, during the operation of the deep cone thickener, when it is necessary to adjust the injection pressure of the steel ball nozzle 7, the method further includes: by rotating the first pressure adjustment nut 77, changing its axial position at the rear end of the nozzle housing 71, thereby adjusting the compression degree of the first auxiliary spring, controlling the position of the second steel ball 80, thereby adjusting the flow area connected to the first overflow channel 78, and realizing the adjustment of the injection pressure of the main channel 76 of the steel ball nozzle 7; At the same time, by rotating the adjusting locking screw 81, the adjusting locking screw 81 is moved in the threaded section of the first pressure adjusting nut 77, and the position of the second steel ball 80 is further fine-tuned to accurately control the injection pressure.

[0069] In some embodiments, during the operation of the deep cone thickener, when it is necessary to adjust the side injection pressure of the steel ball nozzle 7, the method further includes: for the multiple stepped through holes on the side wall of the nozzle housing 71, by rotating the second pressure adjusting nut 84, changing its axial position in the stepped through holes, adjusting the compression degree of the second auxiliary spring 83, and then controlling the position of the third steel ball 82, adjusting the flow area between the second overflow channel and the main channel 76, to achieve the adjustment of the side injection pressure.

[0070] In some embodiments, before the deep cone thickener is shut down, the method further includes: gradually reducing the supply pressure and flow of high-pressure water to gradually reset the main spring 72, the first auxiliary spring and the second auxiliary spring 83 in the steel ball nozzle 7, pushing the first steel ball 75, the second steel ball 80 and the third steel ball 82 back to the initial closed position to prevent tailings from flowing back into the nozzle and pipeline during the shutdown process; shutting down the high-pressure water supply equipment, stopping the injection of water into the top rotating assembly 3, and then stopping the driving device to stop the rake frame 1 and the top rotating assembly 3 from rotating.

[0071] In summary, the anti-pressure rake device and method of the deep cone thickener for filling mine paste provided in the embodiment of the present invention can effectively prevent the compaction of tailings, ensure the smooth operation of the rake frame 1, and significantly reduce the scouring damage of the main shaft of the rake frame 1 by high-pressure water, thereby extending the service life of the equipment, greatly improving the anti-clogging ability and service life of the nozzle, successfully utilizing the injection reaction force to reduce the rotational torque of the main shaft of the rake frame 1 to optimize power consumption, effectively reduce the operating cost and energy consumption of the equipment, and comprehensively improve the overall working efficiency of the equipment, thereby providing an efficient, stable and economical solution for the thickening treatment of mine tailings.

[0072] It should be noted that, in this article, relational terms such as first and second, etc. 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. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0073] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A deep cone thickener anti-pressure rake device for filling mining paste, characterized in that: include: A rake frame, including a frame configured to be connected to the drive spindle; A top rotary assembly is coaxially connected to the driving main shaft with the rake frame and is located above the rake frame. A water inlet and a water outlet are provided on the top rotary assembly; A high-pressure pipeline assembly includes a main pipeline and a branch pipeline, wherein the upper end of the main pipeline is connected to the water outlet and extends downward along the outer side of the driving main shaft to the scraper surface of the rake frame, the branch pipeline is arranged on the surface of the scraper along the direction of the scraper, and a plurality of interfaces are arranged on the side wall of the branch pipeline along the direction of the scraper, the end of the branch pipeline close to the driving main shaft is connected to the lower end of the main pipeline, and a plurality of steel ball nozzles are arranged on the surface of the scraper along the arrangement direction of the branch pipeline, the water inlet of the steel ball nozzle is correspondingly connected to the interface of the branch pipeline, and the water spraying port of the steel ball nozzle is arranged toward the bottom of the tailings cone pool.

2. The anti-pressure rake device according to claim 1, characterized in that: The top rotary assembly comprises: a shell, and a water injection port is provided on a side wall of the shell; An upper fixing ring, a swivel center joint and a lower fixing ring are arranged inside the housing, and the upper fixing ring, the swivel center joint and the lower fixing ring are fixedly connected to the driving main shaft in sequence from top to bottom, and are rotatably arranged relative to the housing; The swivel center joint is connected to the driving main shaft through the upper fixing ring. The swivel center joint is a columnar structure. An axial center hole is provided at the center of the columnar structure. The axial center hole is configured to be connected with the driving main shaft. At least one annular groove is provided on the outer circumferential surface of the swivel center joint. The groove is used to form a high-pressure water channel. The water inlet end of the high-pressure water channel is connected to the water injection port. A water outlet is provided on the swivel center joint from the high-pressure water channel downward. A plurality of pipeline connection channels are arranged on the lower fixing ring corresponding to the water outlets, and the upper ends of the plurality of main pipelines are connected to the pipeline connection channels.

3. The anti-pressure rake device according to claim 1, characterized in that: An upper moving ring and a lower moving ring are also provided between the swivel center joint and the side wall of the shell. The upper moving ring and the lower moving ring are fixedly sleeved on the outer circumferential surface of the swivel center joint and rotate synchronously with the swivel center joint and the rake frame. The upper moving ring and the lower moving ring are correspondingly arranged up and down, and there is a gap between the upper moving ring and the lower moving ring in the axial direction. The gap forms a water inlet channel docking with the water inlet end of the high-pressure water channel. The water inlet end of the swivel center joint is connected with the water injection port via the water inlet channel; An upper static ring is correspondingly provided above the upper dynamic ring, a first accommodating space is reserved between the upper dynamic ring and the upper static ring, a plurality of first compression springs are provided in the first accommodating space, the lower ends of the first compression springs are in contact with the upper surface of the upper dynamic ring, and the upper ends of the first compression springs are in contact with the lower surface of the upper static ring through the first gasket and the first wear-resistant rubber ring in sequence; A lower static ring is correspondingly provided below the lower moving ring, a second accommodating space is reserved between the lower moving ring and the lower static ring, a plurality of second compression springs are provided in the second accommodating space, the lower ends of the second compression springs abut against the lower surface of the lower moving ring, and the lower ends of the second compression springs contact with the upper surface of the lower static ring through the second gasket and the second wear-resistant rubber ring in sequence; The shell includes an annular side wall, the top and bottom of the annular side wall respectively have flanges bent toward the driving spindle, the top flange of the shell abuts against the top of the upper stationary ring, and the bottom flange of the shell abuts against the bottom of the lower stationary ring.

4. The anti-pressure rake device according to claim 3, characterized in that: A first sealing ring is nested between the upper static ring and the side wall of the shell, and a second sealing ring is nested between the lower static ring and the side wall of the shell.

5. The anti-pressure rake device according to claim 3, characterized in that: The lower fixing ring is an annular structure, and four water outlets are evenly distributed on the bottom of the lower fixing ring. Each water outlet is connected to the upper end of a steel pipe, and the high-pressure water flowing into the rotating center joint is evenly diverted to the four steel pipes and transported to the steel ball nozzle on the rake frame.

6. The anti-pressure rake device according to claim 1, characterized in that: The steel ball nozzle comprises: a nozzle housing, which is a cylindrical structure with a hole inside, a connecting pipe is provided at the front end of the nozzle housing, a water inlet channel connected to the hole is provided at the center of the connecting pipe, and a first steel ball is provided at the entrance of the water inlet channel and the hole. A main spring is a cylindrical helical spring installed in the main channel inside the nozzle housing, the main channel is a part of the hole, one end of the main spring abuts against the step surface at the rear end of the hole inside the nozzle housing, and the other end contacts the first steel ball; A first pressure adjusting nut is threadedly connected to the rear end of the nozzle housing and corresponds to the main channel of the nozzle housing axially front and back. A first overflow channel is provided in the center of the first pressure adjusting nut. A first auxiliary spring is provided in the center of the screw of the first pressure adjusting nut. The first overflow channel is communicated with the cavity where the first auxiliary spring is located. A second steel ball is provided at one end of the first auxiliary spring close to the main channel. A threaded section is provided in the center of the screw of the first pressure adjusting nut. An adjusting locking screw is provided in the threaded section. One end of the adjusting locking screw abuts against the second steel ball, and the other end of the adjusting locking screw extends into the main channel and is inserted into the main spring.

7. The anti-pressure rake device according to claim 1, characterized in that: A plurality of stepped through holes are provided on the side wall of the nozzle housing in a circumferential direction, and the axial diameter of each of the stepped through holes increases sequentially from the inside to the outside. A third steel ball is provided on the step surface at the bottom of each of the stepped through holes, and a second auxiliary spring is provided above the third steel ball. A second pressure adjusting nut is threadedly connected in each of the stepped through holes, and a second overflow channel is provided at the center of the second pressure adjusting nut, and the second auxiliary spring is penetrated into the second overflow channel.

8. The anti-pressure rake device according to claim 1, characterized in that: The scraper of the rake frame includes a first scraper, a second scraper, a third scraper and a fourth scraper connected to the driving main shaft and arranged crosswise, and a plurality of steel ball nozzles are evenly spaced on the same side of the first scraper, the second scraper, the third scraper and the fourth scraper.

9. A deep cone thickener, characterized in that: include: bridge; A driving mechanism is arranged on the bridge frame, and the driving mechanism includes a driving main shaft, and the anti-pressure rake device according to any one of claims 1 to 8 is connected to the driving main shaft.

10. A method for operating a deep cone thickener anti-pressure rake, characterized in that: The method is implemented by using the deep cone thickener anti-pressure rake device for mining paste filling according to any one of claims 1 to 8, the method comprising: Start the driving device to drive the rake frame and the top rotary assembly to rotate around the driving main shaft, and at the same time start the external high-pressure water supply equipment to allow high-pressure water to enter from the water injection port of the top rotary assembly; After the high-pressure water enters the top rotary assembly, it flows into the high-pressure water channel on the outer circumferential surface of the rotary center joint through the water inlet channel. The high-pressure water gathers in the high-pressure water channel and flows to the water outlet of the rotary center joint. The high-pressure water flowing out of the water outlet of the rotary center joint enters the main pipeline of the high-pressure pipeline assembly through the pipeline connection channel on the lower fixed ring. The main pipeline extends downward along the outer side of the driving spindle to the scraper surface of the rake frame, and the high-pressure water is transported downward; The high-pressure water entering the main pipeline flows into the branch pipeline at the lower end of the main pipeline, and the high-pressure water enters the water inlet of the steel ball nozzle through multiple interfaces on the side wall of the branch pipeline; When high-pressure water enters the steel ball nozzle, the pressure pushes the main spring and the first steel ball, causing the high-pressure water to spray from the water outlet of the steel ball nozzle toward the bottom of the tailings cone pool, flushing and disturbing the tailings to prevent rake pressure.

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