Device for crushing underwater hard impurities and underwater cleaning robot

Abstract

The invention belongs to the technical field of nuclear power, and particularly relates to a device for crushing underwater hard impurities and an underwater cleaning robot. According to the device, water flow pressure is formed through rotation of the propeller, hard impurities are sucked, the blades can provide suction and discharge thrust for the smashing device, the reamers can synchronously assist in enhancing water flow to effectively resist water resistance, one driving mechanism drives multiple devices to work synchronously, and meanwhile more functions are achieved. Sucked hard impurities are subjected to multi-stage grinding through cooperation of a reamer, a grinding disc and a cross cutter, and control over the particle size of discharged powder particles is guaranteed through a filtering disc. The crusher can effectively adapt to crushing of crustacean hard marine organism impurities and the like in a seawater medium in a tunnel or a forebay.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power operation and maintenance, and specifically relates to a device for crushing underwater hard impurities and an underwater cleaning robot. Background Art

[0002] There are generally different larvae of crustaceans in natural seawater. During the process of cooling water intake of nuclear power plants, they flow into the tunnels and forebays of water intake structures of nuclear power plants. After adhering to and growing with concrete structures, hard impurities in underwater water intake structures dominated by crustaceans are formed. A small amount of impurities fall off and accumulate locally under the impact of water intake flow, but most of them are attached and grown, which is difficult to effectively remove, affecting the control of water intake flow of nuclear power plants. Therefore, it is very necessary to clean up the attached growth and a small amount of marine organisms peeled off by impact in tunnels and forebays. In related technologies, after the water intake tunnel and forebay of nuclear power plants are emptied, the cleaning work is done manually to chisel out the attached marine organisms, and then the chiseled debris is collected and packed in woven bags and transported to the shore for processing. It is time-consuming and labor-intensive, and there is a risk of toxic and harmful gas injury and suffocation caused by the dehydration and deterioration of marine organisms. Therefore, it is urgent to improve the efficiency of collecting and cleaning marine organism debris in tunnels and forebays, and effectively avoid the industrial safety risks faced by manual operations. Summary of the invention

[0003] In order to overcome the problems existing in the related art, a device for crushing underwater hard impurities and an underwater cleaning robot are provided.

[0004] According to one aspect of an embodiment of the present disclosure, there is provided a device for underwater hard impurity crushing, the device comprising: an input tube, a crushing front cavity, a crushing rear cavity, a discharge tube and a driving mechanism connected in sequence from front to back;

[0005] The transmission shaft passes through the input tube, the front cavity of crushing, the rear cavity of crushing and the discharge tube. The front end of the transmission shaft located in the input tube is equipped with a reamer, and the reamer is close to the front wall of the front cavity of crushing; the transmission shaft is rotatably connected to the front wall of the front cavity of crushing through the front bearing, and the transmission shaft is installed with a grinding disc and a cross knife at a position inside the front cavity of crushing, and the grinding disc is installed closer to the front wall of the front cavity of crushing, and a conveying through hole is provided between the front cavity of crushing and the rear cavity of crushing, and the filter disc is located in the rear cavity of crushing and is adaptively installed at the edge of the conveying through hole, and the transmission shaft is gap-matched with the installation through hole provided in the center of the filter disc, and a propeller is installed at the position of the transmission shaft in the rear cavity of crushing; the output end of the driving mechanism passes through the rear end of the discharge tube and is located in the discharge tube, and the transmission shaft is rotatably connected to the front wall of the discharge tube through the rear bearing, and the rear end of the transmission shaft is transmission-connected to the output end of the driving mechanism through a shaft coupling;

[0006] The driving mechanism is used to provide rotational power. After the driving mechanism is turned on, water flow pressure is formed by the rotation of the propeller to suck hard impurities. The reamer is used to crush the feed material to a primary level. After the large-sized hard impurities are crushed to a certain extent, they are pushed by the water flow and the reamer to pass through multiple gaps on the edge of the front bearing and enter the front crushing cavity. They are first crushed by the grinding disc for secondary crushing, then crushed by the cross knife for tertiary crushing, and finally filtered by the filter disc before being discharged from the discharge barrel.

[0007] In a possible implementation, the reamer has a plurality of cutting blades, each of which is a blunt blade with a preset inclination angle, and three sets of cross blades are installed on the transmission shaft at the position of the front crushing cavity.

[0008] In a possible implementation, the device further includes a cutter disc, which is installed between the front wall of the pre-crushing cavity and the reamer, and the cutter disc is evenly provided with toothed cutting blades, and the reamer rotates to form shear with the fixed cutter disc.

[0009] In a possible implementation, a long hole of a preset width and cutting teeth are provided on the grinding disc, and the blade in the grinding disc rotates together with the cutting teeth to perform secondary crushing and cutting on the feed.

[0010] In a possible implementation, a cross knife is installed on the rotating shaft near the feed end of the filter disc to perform four-stage crushing on the feed entering the filter disc.

[0011] In a possible implementation, the filter plate is a stainless steel perforated plate.

[0012] In a possible implementation, anti-corrosion measures are taken for each component of the device, and internal wear parts are made of materials that are resistant to seawater corrosion.

[0013] In a possible implementation, the driving mechanism is a three-phase asynchronous motor.

[0014] According to another aspect of an embodiment of the present disclosure, there is provided an underwater cleaning robot, the underwater cleaning robot comprising: a motion mechanism, a shellfish collecting device, and the device as described above.

[0015] In a possible implementation, the motion mechanism is a track motion mechanism.

[0016] The beneficial effects of the present disclosure are as follows: the device of the present disclosure forms water flow pressure through the rotation of the propeller to suck the hard impurities in the water intake tunnel and the front pool, and the blades can provide suction and discharge thrust for the crushing device. One driving mechanism drives multiple devices and has more functions. The inhaled hard impurities are ground and crushed in multiple stages through the cooperation of the reamer, the grinding disc and the cross knife, and the particle size of the discharged powder is guaranteed to meet the working reliability requirements of the downstream filter of the power plant seawater cooling system through the filter disc. The multi-stage crushing mechanism can assist the propeller to effectively enhance the water flow and effectively resist water resistance, and can effectively adapt to the absorption, collection and crushing of hard impurities and the like under the seawater medium in the tunnel or the front pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereoscopic diagram of a device for crushing underwater hard impurities shown in an embodiment of the present disclosure.

[0018] Figure 2 It is a cross-sectional view of a device for crushing underwater hard impurities shown in an embodiment of the present disclosure.

[0019] Figure 3 It is a side view of a device for crushing underwater hard impurities shown in an embodiment of the present disclosure.

[0020] In the figure:

[0021] 1-input tube, 2-crushing front cavity, 3-crushing rear cavity, 4-discharge tube, 5-driving mechanism,

[0022] 6-coupling, 7-drive shaft, 8-rear bearing, 9-propeller, 10-filter disc, 11-cross knife,

[0023] 12-grinding disc, 13-front bearing, 14-reamer. DETAILED DESCRIPTION

[0024] The present disclosure is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Unless otherwise defined, the technical and scientific terms used in the present disclosure have the same meanings as those generally understood by those skilled in the art to which the present disclosure belongs; the terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure; the term "including" and any variations thereof in the present disclosure are intended to cover non-exclusive inclusions. Obviously, the embodiments described in the present disclosure are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative efforts are within the scope of protection of the present disclosure.

[0026] Reference to "embodiments" in this disclosure means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the disclosure. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] Figure 1 is a stereoscopic diagram of a device for crushing underwater hard impurities shown in an embodiment of the present disclosure, Figure 2 is a cross-sectional view of a device for crushing underwater hard impurities shown in an embodiment of the present disclosure, Figure 3 is a side view of a device for crushing underwater hard impurities shown in an embodiment of the present disclosure, see Figures 1 to 3 The device comprises: an input tube 1, a front-crushing cavity 2, a rear-crushing cavity 3, a discharge tube 4 and a driving mechanism 5 which are connected in sequence from front to back.

[0028] The transmission shaft 7 passes through the input tube 1, the front cavity 2 before crushing, the rear cavity 3 after crushing and the discharge tube 4. The front end of the transmission shaft 7 located in the input tube 1 is installed with a reamer 14, and the reamer 14 is close to the front wall of the front cavity 2 before crushing; the transmission shaft 7 is rotatably connected to the front wall of the front cavity 2 before crushing through the front bearing 13, the transmission shaft 7 is located in the front cavity 2 before crushing and is installed with a grinding disc 12 and a cross knife 11, and the grinding disc 12 is installed closer to the front wall of the front cavity 2 before crushing, a conveying through hole is provided between the front cavity 2 before crushing and the rear cavity 3 after crushing, the filter disc 10 is located in the rear cavity 3 after crushing and is adaptively installed at the edge of the conveying through hole, the transmission shaft 7 is gap-matched with the installation through hole provided in the center of the filter disc 10, and the transmission shaft 7 is located in the rear cavity 3 after crushing and is installed with a propeller 9; the output end of the driving mechanism 5 passes through the discharge tube 4 and the rear end is located in the discharge tube 4, the transmission shaft 7 is rotatably connected to the front wall of the discharge tube 4 through the rear bearing 8, and the rear end of the transmission shaft 7 is transmission-connected to the output end of the driving mechanism 5 through a shaft coupling.

[0029] The driving mechanism 5 is used to provide rotational power. After the driving mechanism 5 is turned on, the propeller 9 rotates to form water flow pressure to suck hard impurities. The reamer 14 is used to crush the feed into a primary state. After the large hard impurities are crushed, they are driven by the water flow and the reamer 14 to pass through multiple gaps at the edge of the front bearing 13 and enter the front crushing cavity 2. They are first crushed by the grinding disc 12 for secondary crushing, and are then crushed into a tertiary state by the cross knife 11 under the drive of the water flow. After being filtered by the filter disc 10, they are discharged from the discharge barrel 4 to complete the entire crushing process.

[0030] The device disclosed in the present invention forms water flow pressure by rotating the propeller 9 to suck hard impurities. The blades can provide suction and discharge thrust for the crushing device. One driving mechanism 5 drives multiple devices and has more functions. The hard impurities sucked in are ground in multiple stages by the cooperation of the reamer 14, the grinding disc 12 and the cross knife 11, and the particle size of the discharged powder is guaranteed by the filter disc 10. The multi-stage crushing mechanism can assist the propeller 9 to effectively assist in enhancing the water flow and effectively resist water resistance, and can effectively adapt to the crushing of hard impurities in seawater media, hard impurities in tunnels or forebays, etc.

[0031] In a possible implementation, the reamer 14 has a plurality of cutting blades, each of which is a blunt blade with a preset inclination angle, and the transmission shaft 7 is located at the position of the crushing front cavity 2 to install three sets of cross blades 11. The reamer 14 can cut and push the mixed feed.

[0032] In a possible implementation, the device also includes a cutter disc, which is installed between the front wall of the front chamber 2 and the reamer 14. The cutter disc is evenly provided with toothed cutting blades. The reamer 14 rotates and forms shear with the fixed cutter disc, thereby significantly increasing the cutting surface of the reamer 14 and improving the efficiency and quality of the primary crushing.

[0033] In a possible implementation, the grinding disc 12 is provided with long holes of a preset width (for example, 8 mm) and cutting teeth. The blade in the grinding disc 12 rotates together with the cutting teeth to perform secondary crushing and cutting of the feed. In the hard impurities disclosed in the present invention, shellfish are entrained with minced meat and tentacle-like tough materials when crushed, so a grinding disc 12 is added during the secondary crushing, and the grinding disc 12 is provided with long holes of a width of about 8 mm. The grinding disc 12 is fixed on the transmission main shaft, and when rotating at high speed, it cuts against the material and cuts the tough material into pieces, thereby effectively ensuring that the material after the secondary crushing to the tertiary crushing is small particle material.

[0034] In a possible implementation, a cross blade 11 is installed on the rotating shaft near the feed end of the filter disc 10 to perform four-stage crushing on the feed entering the filter disc 10, effectively preventing large particles from being blocked in the filter disc 10, and rotating in close contact with the filter screen to enhance water flow and prevent the filter screen from being blocked. After the four-stage crushing, the crushed material is discharged through the filter screen.

[0035] In a possible implementation, the filter disc 10 ensures the particle size of the crushing device and is a stainless steel punching plate with a thickness of 1.5 mm.

[0036] In a possible implementation, all metal parts of the device that are exposed to the outside and in direct contact with water are protected from corrosion, and internal wear parts are made of materials that are resistant to seawater corrosion.

[0037] In a possible implementation, the driving mechanism 5 is a three-phase asynchronous motor, which is connected to the main shaft through a coupling 6 to provide rotational power.

[0038] According to one aspect of the present disclosure, an underwater cleaning robot is provided, which carries the above-mentioned device, adopts a crawler motion device, and cooperates with the shellfish collection device at the front end of the underwater cleaning robot to realize the collection, crushing and cleaning of hard impurities (crustaceans, etc.) in the forebay and tunnel of the nuclear power plant. In an application example, the present disclosure can directly crush the crustaceans collected underwater, and the particle size of the crushed particles is less than 1mm, so that they can be directly discharged into the water, and the particles can be washed away by the water flow.

[0039] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A device for crushing underwater hard impurities, characterized in that: The device comprises: an input tube, a front-crushing cavity, a rear-crushing cavity, a discharge tube and a driving mechanism which are connected in sequence from front to back; The transmission shaft passes through the input tube, the front cavity of crushing, the rear cavity of crushing and the discharge tube. The front end of the transmission shaft located in the input tube is equipped with a reamer, and the reamer is close to the front wall of the front cavity of crushing; the transmission shaft is rotatably connected to the front wall of the front cavity of crushing through the front bearing, and the transmission shaft is installed with a grinding disc and a cross knife at a position inside the front cavity of crushing, and the grinding disc is installed closer to the front wall of the front cavity of crushing, and a conveying through hole is provided between the front cavity of crushing and the rear cavity of crushing, and the filter disc is located in the rear cavity of crushing and is adaptively installed at the edge of the conveying through hole, and the transmission shaft is gap-matched with the installation through hole provided in the center of the filter disc, and a propeller is installed at the position of the transmission shaft in the rear cavity of crushing; the output end of the driving mechanism passes through the rear end of the discharge tube and is located in the discharge tube, and the transmission shaft is rotatably connected to the front wall of the discharge tube through the rear bearing, and the rear end of the transmission shaft is transmission-connected to the output end of the driving mechanism through a shaft coupling; The driving mechanism is used to provide rotational power. After the driving mechanism is turned on, water flow pressure is formed by the rotation of the propeller to suck hard impurities. The reamer is used to crush the feed into a primary state. After the large hard impurities are crushed, they are pushed by the water flow and the reamer to pass through multiple gaps on the edge of the front bearing and enter the front crushing cavity. They are first crushed by the grinding disc for the secondary state, then crushed by the cross knife for the tertiary state, and finally filtered by the filter disc before being discharged from the discharge barrel.

2. The device according to claim 1, characterized in that The reamer has multiple cutting blades, each of which is a blunt blade with a preset inclination angle. The transmission shaft is located at the position of the front cavity of the crushing and three sets of cross blades are installed.

3. The device according to claim 1, characterized in that The device also includes a cutter disc, which is installed between the front wall of the front crushing cavity and the reamer. The cutter disc is evenly provided with toothed cutting blades, and the reamer rotates to form shearing with the fixed cutter disc.

4. The device according to claim 1, characterized in that The grinding disc is provided with long holes of preset width and cutting teeth, and the blade in the grinding disc rotates together with the cutting teeth to perform secondary crushing and cutting on the feed.

5. The device according to claim 1, characterized in that A cross knife is installed on the rotating shaft near the feed end of the filter disc to perform four-stage crushing on the feed entering the filter disc.

6. The device according to claim 1, characterized in that The filter plate is a stainless steel perforated plate.

7. The device according to claim 1, characterized in that All components of the device are protected from corrosion, and internal wear parts are made of materials that are resistant to seawater corrosion.

8. The device according to claim 1, characterized in that The driving mechanism is a three-phase asynchronous motor.

9. An underwater cleaning robot, characterized in that: The underwater cleaning robot comprises: a motion mechanism, a shellfish collecting device and a device as described in any one of claims 1 to 8.

10. The underwater cleaning robot according to claim 9, characterized in that: The motion mechanism is a crawler motion mechanism.

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