Sand and stone processing and screening mechanism for reservoir under pumped storage power station

Abstract

The utility model discloses a sand and stone processing and screening mechanism for a reservoir under a pumped storage power station, which comprises a sand and stone screening frame, a sand and stone conveying line for conveying screened sand and stone to the outside is transversely arranged at the bottom of the sand and stone screening frame, the crushed sand and stone are screened by a sand and stone screening net plate in the sand and stone screening frame, and the sand and stone conveying line is used for conveying the screened sand and stone to the outside. A sand and stone screening mesh plate of the unmatched sand and stone vibrating box slides to fall on a conveying drive in the sand and stone circulating conveying line, so that the unmatched sand and stone are recycled by the sand and stone circulating conveying line and then conveyed into the sand and stone crushing barrel for crushing treatment; then the crushed gravel is conveyed into a material suction conveying pipe fitting through a gravel material suction pump and then conveyed to a gravel screening net plate for screening, so that the phenomenon that the gravel is not uniform in the gravel machining process can be avoided, and the phenomenon that the gravel screening net plate is blocked and cannot be screened due to the fact that the unmatched gravel is directly recycled is avoided; and the gravel processing quality is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sand and stone processing, and specifically relates to a sand and stone processing and screening mechanism for a lower reservoir of a pumped storage power station. Background Art

[0002] Due to its good hardness and stable chemical properties, sand and gravel are often used as high-quality building materials and concrete raw materials and are widely used in houses, roads, highways, railways, engineering and other fields. Before sand and gravel are used as building materials, they need to be separated in order to remove some larger stones in the sand and gravel so that the sand and gravel can be better used in the construction field. However, it is difficult to screen sand and gravel continuously for a long period of time. The sand and gravel in the sand and gravel hopper often form bridges or the feed pipe is blocked, resulting in the inability to continuously discharge sand and gravel. The existing sand and gravel screening drum is difficult to separate sand and gravel quickly and efficiently during the screening process. The sand and gravel separation efficiency is low and it is difficult to meet the needs of construction processing.

[0003] For this purpose, a sand and stone conveying and screening device with the announcement number of "CN204429666U" includes a sand and stone hopper, a conveying mechanism and a screening mechanism, the screening mechanism is arranged at one end of the conveying mechanism, a plurality of fixed columns are vertically and evenly arranged outside the sand and stone hopper, a feeding pipe is vertically arranged at the lower side of the sand and stone hopper, a pneumatic gate valve is arranged on the feeding pipe, a silo wall vibrator is arranged at the lower side of the sand and stone hopper, the conveying mechanism includes a conveying bracket, a conveying motor and a conveyor belt, the conveying bracket is tiltedly arranged at the lower side of the sand and stone hopper, the conveying motor drives the conveying roller, the conveyor belt is tiltedly arranged on the conveying roller, the lower end of the conveyor belt is arranged at the lower side of the feeding pipe of the sand and stone hopper, the screening mechanism includes a screening bracket, a screening drum and a rotating motor, the screening drum is truncated, and the rotating motor drives the screening drum to rotate. It can quickly and efficiently screen sand and stone, reduce the labor intensity of workers, and meet the needs of production.

[0004] However, for the above-mentioned sand and gravel conveying and screening device, although the conveying mechanism can be moved as needed; the screening drum is driven to rotate by a rotating motor, and the screening drum is in a truncated cone shape, and a plurality of circular holes for sand are evenly arranged on the screening drum, which can efficiently separate the sand and gravel, thereby improving the efficiency and quality of sand and gravel separation. However, the following obvious defects still exist during use: although the above-mentioned screening drum is provided with sand circular holes of different apertures, due to the different shapes and sizes of the sand and gravel, the sand and gravel with larger diameters cannot be screened and dropped from the different sand circular holes in the screening drum, thereby causing the sand and gravel to accumulate more and more, resulting in the blockage of the sand circular holes and the inability to screen the sand and gravel normally. Utility Model Content

[0005] The purpose of the utility model is to provide a sand and stone processing and screening mechanism for the lower reservoir of a pumped storage power station to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a sand and stone processing and screening mechanism for the lower reservoir of a pumped storage power station, comprising:

[0007] A sand and gravel screening frame, wherein a sand and gravel conveying line for conveying the screened sand and gravel to the outside for use is disposed transversely at the bottom of the sand and gravel screening frame, an industrial vacuum cleaner for dust removal of the screened sand and gravel is disposed at one side of the bottom end of the sand and gravel screening frame, and a sand and gravel suction pump for conveying the crushed sand and gravel for screening is disposed at the outside of one side of the sand and gravel screening frame;

[0008] A sand and gravel crushing cylinder, one side of the upper end of which is provided with a sand and gravel circulation conveying line inclined toward the discharge end of the sand and gravel screening frame; a crushing shaft rod for crushing sand and gravel is rotatably provided on the inner side of the sand and gravel crushing cylinder through a bracket; the bottom of the sand and gravel crushing cylinder is connected with a suction conveying pipe for sucking and conveying the crushed sand and gravel to the sand and gravel screening frame for screening.

[0009] Preferably, a fixed plate is obliquely provided at the upper end of the sand and gravel screening frame, a sand and gravel screening mesh plate is obliquely provided on the inner side of the fixed plate, and a vibration servo motor installed on the fixed plate is provided at the bottom of the sand and gravel screening mesh plate to achieve vibration screening and outflow of the crushed sand and gravel.

[0010] Preferably, a material discharge hood is obliquely penetrated at one end of the inner side of the fixed plate, and a dust removal pipe is connected to the material discharge hood. The dust removal pipe is connected to an industrial vacuum cleaner, so that dust generated by the output of sand and stone can be absorbed by the industrial vacuum cleaner to reduce pollution to the surrounding environment.

[0011] Preferably, the support rods at both ends of the bottom of the sand and gravel circulation conveyor line are respectively fixed on one side of the sand and gravel crushing drum and the sand and gravel screening frame, and the sand and gravel circulation conveyor line extends to the bottom side of the discharge end of the sand and gravel screening frame, which is used to return the substandard sand and gravel screened out through the sand and gravel circulation conveyor line to the inside of the sand and gravel crushing drum for re-crushing and stirring.

[0012] Preferably, the upper end of the crushing shaft is transmission-connected to a servo motor fixed on a bracket, and crushing knife bars are evenly and evenly arranged on the crushing shaft at an angle downward, and auxiliary crushing bars obliquely fixed on a sand and stone crushing barrel are staggered between the crushing knife bars, so that the input sand and stone raw materials can be crushed by the staggered arrangement of the crushing knife bars and the auxiliary crushing bars.

[0013] Preferably, one end of the suction and conveying pipe passes through the bottom side of the sand and gravel screening frame and extends upward from one side of the sand and gravel conveying line to be connected with the input end of the sand and gravel suction pump, and the output end of the sand and gravel suction pump is connected to a discharge pipe extending to the upper part of the conveying end of the sand and gravel screening mesh plate, so as to transport the crushed sand and gravel to the sand and gravel screening frame for screening by suction.

[0014] Compared with the prior art, the technical effects and advantages of the utility model are as follows: the sand and gravel processing and screening mechanism used in the lower reservoir of the pumped storage power station is through the sand and gravel circulation conveying line at the bottom side of one end of the sand and gravel screening frame, and the other end of the sand and gravel circulation conveying line extends to one side of the upper end of the sand and gravel crushing cylinder, and the bottom of the sand and gravel crusher is connected to the sand and gravel suction pump through the suction conveying pipe fitting, so that the sand and gravel screening mesh plate in the sand and gravel screening frame screens the crushed sand and gravel, and the sliding of the sand and gravel screening mesh plate of the vibrating box of non-compliant sand and gravel falls on the conveying belt in the sand and gravel circulation conveying line, so that the non-compliant sand and gravel are recovered by the sand and gravel transportation circulation line and then transported to the inside of the sand and gravel crushing cylinder for crushing treatment, and then the crushed sand and gravel are input into the suction conveying pipe fitting by the sand and gravel suction pump and then transported to the sand and gravel screening mesh plate for screening, so that the sand and gravel will not be uneven in the processing, and the direct recovery of non-compliant sand and gravel will not cause blockage of the sand and gravel screening mesh plate and make it impossible to screen, thereby further improving the quality of sand and gravel processing.

[0015] Through the inclined feeding hood set on one side of the bottom of the sand and gravel screening frame, and the connection between the outside of the feeding hood and the industrial vacuum cleaner through the dust removal rod, the dust generated in the sand feeding output from the feeding hood can be adsorbed by the cooperation of the dust removal pipe and the industrial vacuum cleaner, and the inlet end of the feeding hood can generate suction to adsorb part of the dust generated by the sand and gravel screening mesh plate, thereby preventing the dust from spreading outward and polluting the environment, and further reducing the phenomenon of dust diffusion pollution in sand and gravel processing and screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the sand and stone crushing cylinder of the utility model from the main view;

[0018] Figure 3 This is a schematic diagram of the top view of the fixed plate structure of the utility model.

[0019] In the figure: 1. Sand and gravel screening frame; 2. Sand and gravel conveying line; 3. Industrial vacuum cleaner; 4. Sand and gravel suction pump; 5. Sand and gravel crushing cylinder; 6. Sand and gravel circulation conveying line; 7. Crushing shaft; 8. Suction and conveying pipe fittings; 9. Fixed plate; 10. Sand and gravel screening mesh plate; 11. Vibration servo motor; 12. Feeding hood; 13. Dust removal pipe fittings; 14. Servo motor; 15. Crushing knife rod; 16. Auxiliary crushing rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 The utility model provides a technical solution: a sand and stone processing and screening mechanism for the lower reservoir of a pumped storage power station, comprising:

[0022] A sand and gravel screening frame 1, the bottom of which is laterally provided with a sand and gravel conveying line 2 for conveying the screened sand and gravel to external use, the sand and gravel conveying line 2 comprises a bracket, a conveying roller, a conveying belt and a motor combination, which can convey the sand and gravel that meet the screening requirements to a designated location without the need to manually transport the sand and gravel using a trolley, an industrial vacuum cleaner 3 for dust removal of the screened sand and gravel is provided on one side of the bottom end of the sand and gravel screening frame 1, which can absorb and suppress the dust generated during the discharging process, and reduce the pollution of the dust to the annular ring, and a sand and gravel suction pump 4 for screening the crushed sand and gravel suction material is provided on the outside of one side of the sand and gravel screening frame 1, the sand and gravel suction pump 4 can convey the crushed sand and gravel to the sand and gravel screening mesh plate 10 for screening by adsorption, and can reduce the occurrence of sand and gravel processing dust;

[0023] The sand and stone crushing cylinder 5 has a sand and stone circulation conveying line 6 inclined toward the discharge end of the sand and stone screening frame 1 on one side of its upper end. The sand and stone circulation conveying line 6 is composed of a conveying frame, a conveying belt, a conveying roller and a motor. A feeding pump is provided on one side of the bracket of the sand and stone crushing cylinder 5. The feeding pump is used to suck and convey the sand and stone raw materials that have been pre-crushed to the inside of the sand and stone crushing cylinder 5, and to recycle and convey the unqualified sand and stone screened out to the inside of the sand and stone crushing cylinder 5 for further crushing, so as to further improve the quality of sand and stone processing. The inner side of the sand and stone crushing cylinder 5 is provided with a crushing shaft rod 7 for crushing sand and stone through a bracket rotation. The crushing shaft rod 7 is rotatably arranged inside the sand and stone crushing cylinder 5 through a bearing to crush the sand and stone, and the crushing shaft rod 7 can be replaced after being damaged. The bottom of the sand and stone crushing cylinder 5 is connected with a suction conveying pipe 8 for sucking and conveying the crushed sand and stone to the sand and stone screening frame 1 for screening, so that the crushed sand and stone fall downward into the suction conveying pipe 8 and the sand and stone suction pump 4 is used to absorb the material for screening.

[0024] The upper end of the sand and stone screening frame 1 is inclined with a fixed plate 9, and a vibration spring is provided on the side of the bottom end surface of the fixed plate 9, and one end of the vibration spring is fixedly connected to the side of the bottom end of the sand and stone screening mesh plate 10 to enhance the stability of the working vibration of the sand and stone screening mesh plate 10. The inner side of the fixed plate 9 is inclined with a sand and stone screening mesh plate 10, and the bottom of the sand and stone screening mesh plate 10 is provided with a vibration servo motor 11 installed on the fixed plate 9. The vibration servo motor 11 is embedded and fixed in the center position of the fixed plate 9. A lower material cover 12 is obliquely penetrated at one end of the inner side of the fixed plate 9, and one end of the lower material cover 12 penetrates and extends The inner side extending to the fixed plate 9 is used for unloading the screened sand and gravel, and a blocking plate is provided on one side of the inner side of the fixed plate 9 to block the qualified sand and gravel after screening. The unloading cover 12 is connected with a dust removal pipe 13, and the dust removal pipe 13 is connected to the industrial vacuum cleaner 3 to achieve the effect of absorbing the generated dust. The support rods at both ends of the bottom of the sand and gravel circulation conveying line 6 are respectively fixed on one side of the sand and gravel crushing drum 5 and the sand and gravel screening frame 1, and the sand and gravel circulation conveying line 6 extends to the bottom side of the discharge end of the sand and gravel screening frame 1, so that the unqualified sand and gravel can be recovered and conveyed to the inside of the sand and gravel crushing drum 5 for crushing and reprocessing.

[0025] The upper end of the crushing shaft 7 is transmission-connected to a servo motor 14 fixed on a bracket, driving the crushing shaft 7 to rotate, and crushing blades 15 are evenly and obliquely arranged on the crushing shaft 7 to crush the sand and stone raw materials. Auxiliary crushing rods 16 obliquely fixed on the sand and stone crushing cylinder 5 are staggered between the crushing blades 15, which can staggeredly rotate the sand and stone for crushing. One end of the suction and conveying pipe 8 passes through the bottom side of the sand and stone screening frame 1 and extends upward from one side of the sand and stone conveying line 2 to be connected with the input end of the sand and stone suction pump 4, so as to achieve the effect of magnetic adsorption and feeding of the crushed sand and stone, and enhance the efficiency of sand and stone processing. The output end of the sand and stone suction pump 4 is connected with a discharge pipe extending to the upper part of the feeding end of the sand and stone screening mesh plate 10, so as to facilitate the crushed sand and stone to be transported to the sand and stone screening mesh plate 10 by pipeline for screening operation.

[0026] Specifically, when in use, the pre-crushed sand and stone are first sucked and transported to the inside of the sand and stone crushing cylinder 5 through the feeding pump, and the servo motor 14 is controlled by the external controller to start and drive the crushing shaft 7 to rotate. The rotation of the crushing shaft 7 drives the sub-crushing knife rod 15 to rotate alternately with the auxiliary crushing rod 16 inside the sand and stone crushing cylinder 5. The interlaced rotating crushing knife rod 15 and the auxiliary crushing rod 16 can further crush the pre-crushed sand and stone, so that the sand and stone can be compositely used for reprocessing standards. Then the crushed sand and stone fall into the suction and conveying pipe 8. At this time, the sand and stone suction pump 4 is controlled to work to absorb and convey the crushed sand and stone inside the suction and conveying pipe 8 to the upward inclined end surface of the sand and stone screening mesh plate 10, and at the same time, the vibration servo motor 11 is started to generate The vibration makes the sand and gravel screening mesh plate 10 vibrate and screen the sand and gravel, and the sand and gravel that fall onto the surface of the fixed plate 9 fall onto the sand and gravel conveyor line 2 through the discharge cover 12 and are transported to the outside, while the sand and gravel that do not meet the requirements flow to the inclined end of the sand and gravel screening mesh plate 10 and fall on the conveyor belt surface on the sand and gravel circulation conveyor line 6. The external controller is used to make the sand and gravel circulation conveyor line 6 work to obliquely transport the sand and gravel to the upper end of the sand and gravel crushing cylinder 5, and the sand and gravel fall into the inside of the sand and gravel crushing cylinder 5 and are crushed again until the sand and gravel composite processing meets the use standard. Long-term operation can further improve the quality of sand and gravel after processing, and the dust generated by the discharge of materials can be adsorbed by the industrial vacuum cleaner 3 to avoid the dust pollution to the surrounding environment.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sand and stone processing and screening mechanism for the lower reservoir of a pumped storage power station, characterized in that: include: A sand and gravel screening frame (1), wherein a sand and gravel conveying line (2) for conveying the screened sand and gravel to an external use is transversely arranged at the bottom of the sand and gravel screening frame (1), an industrial vacuum cleaner (3) for removing dust from the screened sand and gravel is arranged at one side of the bottom end of the sand and gravel screening frame (1), and a sand and gravel suction pump (4) for conveying crushed sand and gravel for screening is arranged outside one side of the sand and gravel screening frame (1); A sand and gravel crushing cylinder (5) is provided on one side of the upper end of the sand and gravel crushing cylinder (5) with a sand and gravel circulation conveying line (6) inclined toward the discharge end of the sand and gravel screening frame (1); a crushing shaft (7) for crushing sand and gravel is rotatably provided on the inner side of the sand and gravel crushing cylinder (5) through a bracket; and a suction conveying pipe (8) for sucking and conveying crushed sand and gravel to the sand and gravel screening frame (1) for screening is connected to the bottom of the sand and gravel crushing cylinder (5).

2. A sand and stone processing and screening mechanism for the lower reservoir of a pumped storage power station according to claim 1, characterized in that: A fixed plate (9) is obliquely provided at the upper end of the sand and gravel screening frame (1), a sand and gravel screening mesh plate (10) is obliquely provided on the inner side of the fixed plate (9), and a vibration servo motor (11) mounted on the fixed plate (9) is provided at the bottom of the sand and gravel screening mesh plate (10).

3. A sand and stone processing and screening mechanism for the lower reservoir of a pumped storage power station according to claim 2, characterized in that: A material lowering cover (12) is obliquely penetrated through one end of the inner side of the fixed plate (9), a dust removal pipe (13) is connected to the material lowering cover (12), and the dust removal pipe (13) is connected to the industrial vacuum cleaner (3).

4. A sand and stone processing and screening mechanism for the lower reservoir of a pumped storage power station according to claim 1, characterized in that: The supporting rods provided at both ends of the bottom of the sand and gravel circulation conveying line (6) are respectively fixed to one side of the sand and gravel crushing cylinder (5) and the sand and gravel screening frame (1), and the sand and gravel circulation conveying line (6) extends to the bottom side of the discharge end of the sand and gravel screening frame (1).

5. The sand and stone processing and screening mechanism for the lower reservoir of a pumped storage power station according to claim 1, characterized in that: The upper end of the crushing shaft (7) is drivingly connected to a servo motor (14) fixed on a bracket, and crushing blade bars (15) are evenly arranged on the crushing shaft (7) in an inclined downward direction, and auxiliary crushing blade bars (16) are staggered between the crushing blade bars (15) and are obliquely fixed on the sand and stone crushing cylinder (5).

6. A sand and stone processing and screening mechanism for the lower reservoir of a pumped storage power station according to claim 3, characterized in that: One end of the suction and conveying pipe (8) passes through the bottom side of the sand and gravel screening frame (1) and extends upward from one side of the sand and gravel conveying line (2) to communicate with the input end of the sand and gravel suction pump (4), and the output end of the sand and gravel suction pump (4) is connected to a discharge pipe extending to the upper part of the conveying end of the sand and gravel screening mesh plate (10).

Images