A telescopic automatic sand conveying device

Abstract

The application discloses a telescopic automatic sand conveying device, which comprises a conveying belt, two symmetrical slide rails are arranged on the two sides of the conveying belt, the two slide rails are fixed on a support frame, a transmission mechanism for driving the conveying belt to operate is arranged on the slide rails, the outer surface of the conveying belt is fixedly connected with a plurality of equidistantly distributed fixing pieces, and the top surface of each fixing piece is fixedly connected with a fixing column; a feeding assembly is arranged on one side of the fixing column, the ball on the feeding assembly is abutted against the inner side wall of the slide rail through the elastic force of the spring, and can sequentially contact the second inclined surface, the first inclined surface, the third inclined surface and the non-inclined surface on the inner side wall of the slide rail in the conveying process of the conveying belt; in the movement process from the second inclined surface to the first inclined surface, the two connecting plates are similar to a shovel shape to shovel the materials in the material containing box and fill the materials in the cavity, the V-shaped two connecting plates for shoveling the materials can make the containing process more convenient, and the containing amount of each time is increased.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sand conveying equipment, and particularly relates to a telescopic automatic sand conveying device. BACKGROUND

[0002] In the field of petroleum, fracturing refers to a method for forming cracks in an oil and gas layer by using hydraulic action in the process of oil or gas production, and is also called hydraulic fracturing. Fracturing artificially causes cracks in the formation, improves the flow environment of oil in the ground, and increases the production of oil wells. Fracturing can play an important role in improving the flow conditions at the bottom of the oil well, reducing interlayer, and improving the production status of the oil layer. During fracturing, ground operations need to transport sand particles to the sand-carrying liquid pool through a sand particle conveying device, and then the sand particles enter the oil well with the sand-carrying liquid.

[0003] Application No. 201910726278.X discloses a dust falling device and method for a large-inclination sandstone belt conveyor, which comprises a large-inclination belt conveyor body for material conveying, a storage hopper mechanism for material storage and horizontal conveying is arranged above the inclined end bottom of the large-inclination belt conveyor body, and a dust falling mechanism for dust falling is installed in the inside of the storage hopper mechanism; a slope pushing mechanism for anti-skid is installed on the large-inclination belt conveying body.

[0004] The existing sand conveying device technology has the following problems: the existing sand conveying device has a small single sand conveying capacity during sand conveying, which affects the conveying efficiency, in addition, a large amount of dust is generated during conveying due to external wind and other factors, in addition, material is easily left during material pouring, which reduces the sand loading capacity of the next time, and in addition, the material is not uniform during feeding. SUMMARY

[0005] The purpose of the present application is to provide a telescopic automatic sand conveying device to solve the problems of small single sand conveying capacity, a large amount of dust generated during feeding, and uneven feeding.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a telescopic automatic sand conveying device, comprising a conveying belt, two slide rails are symmetrically arranged on both sides of the conveying belt, the two slide rails are fixed on a support frame, a transmission mechanism for driving the conveying belt to operate is arranged on the slide rails, a plurality of fixed members are fixedly connected to the outer surface of the conveying belt at equal intervals, a fixed column is fixedly connected to the top surface of the fixed member, a feeding assembly for shoveling and conveying materials is arranged on one side of the fixed column, and a feeding mechanism for feeding the feeding assembly is arranged below one side of the conveying belt.

[0007] Preferably, the transmission mechanism comprises two parallel transmission rollers, the two transmission rollers are connected by a conveying belt, and the two transmission rollers are rotatably connected with the slide rail.

[0008] Preferably, the inner side wall of the slide rail is sequentially provided with a second slope, a first slope, a third slope and a non-slope.

[0009] Preferably, the feeding assembly comprises two connecting plates, the two connecting plates are hingedly connected, the two ends of the fixed column are internally provided with sliding cavities, the sliding cavities are internally and slidably connected with sliding blocks, the outer side surfaces of the sliding blocks are fixedly connected with fixed rods, the outer side ends of the fixed rods are movably embedded with rolling balls, the inner side surfaces of the sliding blocks are fixedly connected with springs, one end of each spring is fixedly connected with the inner wall of the sliding cavity, the outer walls of the two ends of the fixed column are both provided with arc-shaped limiting sliding grooves, the limiting sliding grooves are communicated with the sliding cavities, the inner sides of the limiting sliding grooves are slidably connected with sliding rods, one end of each sliding rod is fixedly connected with a sliding block, and the other end of each sliding rod is rotatably connected with a connecting plate.

[0010] Preferably, the rolling balls are abutted against the inner side wall of the slide rail by the elastic force of the springs, and sequentially contact the second slope, the first slope, the third slope and the non-slope in the conveying process of the conveying belt.

[0011] Preferably, the outer surface of the conveying belt is fixedly connected with a plurality of elastic cloths corresponding to the feeding assembly, the elastic cloths are in U-shaped structures, and the top portions of the elastic cloths are fixedly connected with the bottom surfaces of the two connecting plates of the feeding assembly.

[0012] Preferably, the feeding mechanism comprises a material containing box, a vibrating base is installed at the bottom end of the material containing box, a movable plate is slidably connected in the material containing box, and two hydraulic cylinders are fixedly installed on the inner bottom wall of the material containing box and fixedly connected with the movable plate.

[0013] Compared with the existing sand conveying device technology, the present application provides a telescopic automatic sand conveying device, which has the following beneficial effects:

[0014] 1、The feeding assembly is arranged on one side of the fixed column, the rolling balls on the feeding assembly are abutted against the inner side wall of the slide rail by the elastic force of the springs, and sequentially contact the second slope, the first slope, the third slope and the non-slope on the inner side wall of the slide rail in the conveying process of the conveying belt, and in the movement process from the second slope to the first slope, the two connecting plates are similar to a shovel shape to shovel the materials in the material containing box and fill the materials in the cavity, and the V-shaped two connecting plates for shoveling the materials make the material containing process more convenient and increase the single containing amount.

[0015] 2、The two connecting plates move to the position of the first inclined surface along with the conveying belt, due to the setting of the first inclined surface, the two balls are no longer extruded, and under the elastic action of the spring, the sliding block moves outward, and then the two connecting plates restore to the initial state, so that the connecting plates exert a certain pressure on the material in the cavity, and the connecting plates are tightly attached to the material, thereby covering and compressing the material, preventing the material from generating a large amount of dust due to external wind and other factors;

[0016] 3、The two connecting plates continue to move to the position of the third inclined surface along with the conveying belt, due to the setting of the third inclined surface, the two balls are extruded, the fixed rod drives the sliding block and the sliding rod to move inward, and then the two connecting plates become V-shaped and rotate counterclockwise by a certain angle, when moving to the position of the non-inclined surface, but not yet leaving the non-inclined surface, at this time, the cavity formed by the two connecting plates has an opening downward, so that the material in the cavity falls into the hopper, at the moment when the balls are separated from the non-inclined surface, due to the elastic instantaneous release of the spring, the balls will bounce back after hitting the inner wall of the sliding rail, and then the fixed rod and the sliding block will move back and forth once or twice, and then the two connecting plates will produce a shaking effect of shape switching, so as to shake off the residual material in the cavity;

[0017] 4、The present application sets a feeding mechanism below one side of the conveying belt, after a group of connecting plates finishes loading in the material box, the vibration base and the hydraulic cylinder can be started, the vibration base will vibrate for a certain time and frequency to make the top surface of the material in the material box restore to the horizontal state, at the same time, the hydraulic cylinder will drive the movable plate to move upward by a certain distance, such a setting can make the top surface of the material in the material box restore to the horizontal state and the initial height after a part of the material is removed, so as to facilitate the subsequent connecting plates to load the material, and ensure that the materials loaded by each group of connecting plates are roughly the same. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, together with the embodiments of the application, to explain the application, and do not constitute a limitation on the application, in the drawings:

[0019] Figure 1 A three-dimensional structure schematic diagram of a telescopic automatic sand conveying device is provided for the present application;

[0020] Figure 2 A three-dimensional cross-sectional structure schematic diagram of a material box is provided for the present application;

[0021] Figure 3 A three-dimensional structure schematic diagram of a conveying belt and a transmission mechanism is provided for the present application;

[0022] Figure 4 A three-dimensional structure schematic diagram of a conveying belt and a transmission mechanism from another perspective is provided for the present application;

[0023] Figure 5 The three-dimensional structure schematic diagram of the sliding rail proposed by the present application is shown in the figure.

[0024] Figure 6 The three-dimensional structure schematic diagram of the sliding rail proposed by the present application is shown in the figure.

[0025] Figure 7 The three-dimensional structure schematic diagram of the feeding assembly proposed by the present application is shown in the figure.

[0026] Figure 8 The three-dimensional structure schematic diagram of the fixed column proposed by the present application is shown in the figure.

[0027] Figure 9 The three-dimensional structure schematic diagram of the fixed column proposed by the present application is shown in the figure.

[0028] Figure 10 The three-dimensional structure schematic diagram of the fixed column proposed by the present application is shown in the figure. Figure 9 The three-dimensional structure schematic diagram of the fixed column proposed by the present application is shown in the figure.

[0029] Figure 11 The three-dimensional structure schematic diagram of the fixed column proposed by the present application is shown in the figure.

[0030] Figure 12 The three-dimensional structure schematic diagram of the fixed column proposed by the present application is shown in the figure.

[0031] In the figure: 1, conveying belt; 2, fixed part; 3, fixed column; 4, sliding cavity; 5, sliding block; 6, fixed rod; 7, ball; 8, spring; 9, limiting sliding slot; 10, sliding rod; 11, connecting plate; 12, transmission roller; 13, sliding rail; 14, first inclined surface; 15, second inclined surface; 16, third inclined surface; 17, non-inclined surface; 18, motor; 19, support frame; 20, material containing box; 21, vibrating base; 22, movable plate; 23, hydraulic cylinder; 24, stretchable cloth. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Please refer to Figures 1-12The application provides a technical scheme: a telescopic automatic sand conveying device, which comprises a conveying belt 1, two slide rails 13 symmetrically arranged on the two sides of the conveying belt 1, the two slide rails 13 being fixed on a support frame 19, a transmission mechanism arranged on the slide rail 13 and used for driving the conveying belt 1 to operate, the transmission mechanism comprising two transmission rollers 12 arranged in parallel, the two transmission rollers 12 being in transmission connection through the conveying belt 1, the two transmission rollers 12 being in rotation connection with the slide rail 13, a motor 18 being fixedly installed on the outer side wall of the slide rail 13, the output shaft of the motor 18 being fixedly connected with one of the transmission rollers 12, the transmission roller 12 being driven to rotate through the motor 18, and the conveying belt 1 being driven to rotate clockwise in the direction Figure 1 、 Figure 2 through the transmission roller 12.

[0034] It should be noted that the outer surface of the conveying belt 1 is fixedly connected with a plurality of fixed parts 2 distributed at equal intervals, the top surface of the fixed part 2 is fixedly connected with a fixed column 3, one side of the fixed column 3 is provided with a feeding assembly used for shoveling and conveying materials, the feeding assembly comprises two connecting plates 11, the two connecting plates 11 are hingedly connected, the two connecting plates 11 are substantially kept horizontal in the initial state (the hinged part of the two connecting plates 11 is slightly convex), the inner part of the two ends of the fixed column 3 is provided with a sliding cavity 4, the sliding cavity 4 is in sliding connection with a sliding block 5 in the inner part, the outer side surface of the sliding block 5 is fixedly connected with a fixed rod 6, the outer side end of the fixed rod 6 is movably embedded with a ball 7, the inner side surface of the sliding block 5 is fixedly connected with a spring 8, one end of the spring 8 is fixedly connected with the inner wall of the sliding cavity 4, and the outer wall of the two ends of the fixed column 3 is provided with an arc-shaped limiting sliding groove 9, the limiting sliding groove 9 is communicated with the sliding cavity 4, the inner side of the limiting sliding groove 9 is in sliding connection with a sliding rod 10, one end of the sliding rod 10 is fixedly connected with the sliding block 5, and the other end of the sliding rod 10 is in rotation connection with the connecting plate 11.

[0035] Further, the inner side wall of the slide rail 13 is sequentially provided with a second inclined surface 15, a first inclined surface 14, a third inclined surface 16 and a non-inclined surface 17, the ball 7 is abutted against the inner side wall of the slide rail 13 through the elastic force of the spring 8 and sequentially contacts the second inclined surface 15, the first inclined surface 14, the third inclined surface 16 and the non-inclined surface 17 in the conveying process of the conveying belt 1, when sliding to the second inclined surface 15, the ball 7 is squeezed to move to the inner side when displacing along with the conveying belt 1 due to the arrangement of the second inclined surface 15, the fixed rod 6 is further moved to the inner side, the spring 8 is compressed and shortened, the fixed rod 6 drives one side of the connecting plate 11 to move to the inner side through the sliding block 5 and the sliding rod 10, the two connecting plates 11 are rotated around the hinged part of the two connecting plates 11 to form a V shape, the sliding rod 10 moves to the inner side and drives the connecting plate 11 to rotate counterclockwise (counterclockwise in the figure) under the limitation of the limiting sliding groove 9, Figure 2 after the two balls 7 pass through the second inclined surface 15, the state of the two connecting plates 11 is as shown in Figure 2 andFigure 4 As shown, after the material is filled, the two connecting plates 11 continue to move with the conveyor belt 1, and when they move to the position of the first slope 14, the two balls 7 are no longer squeezed due to the setting of the first slope 14, and under the elastic action of the spring 8, the sliding block 5 is pushed to move outward, and then the two connecting plates 11 return to the initial state. After that, the two connecting plates 11 continue to move with the conveyor belt 1, and when they move to the position of the third slope 16, the two balls 7 are squeezed, causing the fixed rod 6 to drive the sliding block 5 and the sliding rod 10 to move inward, and then the two connecting plates 11 become V-shaped and rotate counterclockwise by a certain angle, that is, the current state is the same as the state when the material is scooped. After that, the two connecting plates 11 continue to move with the conveyor belt 1, and when they move to the position of the non-slope 17, but have not yet left the non-slope 17, at this time the opening of the cavity formed by the two connecting plates 11 is downward, causing the material in the cavity to fall into the car hopper. At the moment when the ball 7 and the non-slope 17 are separated, due to the setting of the non-slope 17, the elasticity of the spring 8 is released instantaneously, at this time the two connecting plates 11 will immediately change to the initial state, and due to the instantaneous release of the elasticity of the spring 8, the ball 7 will bounce after hitting the inner wall of the sliding rail 13, and then the fixed rod 6 and the sliding block 5 will move back and forth once or twice.

[0036] Furthermore, the outer surface of the conveyor belt 1 is fixedly connected with a plurality of stretch cloths 24 corresponding to the feeding assembly, the stretch cloth 24 is in a U-shaped structure, and the top of the stretch cloth 24 is fixedly connected with the bottom surface of the two connecting plates 11 of the feeding assembly. When the two connecting plates 11 are in the state as shown in the figure, Figure 12 As shown, the stretch cloth 24 and the two connecting plates 11 form a cavity without a cover, and then the two connecting plates 11 will be similar to a shovel form to scoop the material in the material box 20 and fill it in the cavity during the continuous movement of the conveyor belt 1.

[0037] It should be noted that the side of the conveying belt 1 is provided with a feeding mechanism below for feeding the feeding assembly, the feeding mechanism comprises a feeding box 20, a vibration base 21 is installed at the bottom end of the feeding box 20, a movable plate 22 is slidably connected in the feeding box 20, two hydraulic cylinders 23 are fixedly installed on the inner wall of the bottom of the feeding box 20, the output ends of the two hydraulic cylinders 23 are fixedly connected with the movable plate 22, after a group of connecting plates 11 are filled in the feeding box 20, the vibration base 21 and the hydraulic cylinders 23 can be operated, the vibration base 21 can vibrate for a certain time and frequency to make the top surface of the material in the feeding box 20 restore to a horizontal state, and meanwhile the hydraulic cylinders 23 can drive the movable plate 22 to move upward by a certain distance, so that after a part of the material in the feeding box 20 is scooped, the top surface of the material can restore to a horizontal state and the initial height, so that the subsequent connecting plate 11 can fill the material, and the material filled in each group of connecting plates 11 is substantially the same, of course, in addition to the embodiment, the above-mentioned operation can also be triggered by using a contact type limit switch, the contact type limit switch can be arranged on the inner side of the sliding rail 13 and can be triggered by the passing of the ball 7.

[0038] The working principle and use process of the present application are as follows: a certain amount of material is filled in the feeding box 20, when the material is conveyed, as shown in the figure, the sand-carrying liquid pool is placed below the right side of the conveying belt 1, the motor 18 is started, the motor 18 drives the transmission roller 12 to rotate, the transmission roller 12 drives the conveying belt 1 to operate, and the conveying belt 1 drives the plurality of connecting plates 11 to operate; Figure 1

[0039] When the connecting plates 11 below the conveying belt 1 move, the balls 7 roll on the inner side of the sliding rail 13 but have not moved to the position of the second inclined surface 15, at this time, the states of the two connecting plates 11 are relatively flat (the hinged portions of the two connecting plates 11 are slightly convex). When the balls 7 slide to the second inclined surface 15, due to the arrangement of the second inclined surface 15, the fixed rods 6 are pressed to move inward when the balls 7 displace along with the conveying belt 1, and then the springs 8 are compressed to be shortened, the fixed rods 6 drive one side of the connecting plates 11 to move inward through the sliding blocks 5 and the sliding rods 10, so that the two connecting plates 11 rotate around the hinged portions of the two connecting plates 11 to form a V shape, and at the same time, the sliding rods 10 move inward to drive the connecting plates 11 to rotate counterclockwise (counterclockwise in the figure) by a certain angle under the limitation of the limiting sliding grooves 9, and finally the states of the two connecting plates 11 after the two balls 7 pass through the second inclined surface 15 are as shown in the figures. Figure 2 Figure 2 Figure 4 Figure 12

[0040] ​​​​​After two connecting plates 11 continue to move with the conveyor belt 1, two connecting plates 11 will shovel the material in the container 20 like a shovel form and fill in the cavity, two connecting plates 11 shovel the material in V shape will make the process more convenient, and increase the single loading capacity. With the rotation of the conveyor belt 1, two connecting plates 11 are turned over to the top of the conveyor belt 1, and the material falls on the conveyor belt 1 and is blocked by the fixing part 2 and the fixing column 3, and moves upward with the conveyor belt 1.

[0041] After the material is filled, two connecting plates 11 continue to move with the conveyor belt 1, and when they move to the first slope 14, two balls 7 are no longer squeezed due to the setting of the first slope 14, and under the elastic action of the spring 8, they will push the sliding block 5 to move outward, and then make two connecting plates 11 return to the initial state, so that the connecting plate 11 exerts a certain pressure on the material in the cavity, and the connecting plate 11 is tightly attached to the material, which plays a role in covering and compacting the material, preventing the material from producing a large amount of dust due to external wind and other factors;

[0042] After two connecting plates 11 continue to move with the conveyor belt 1, when they move to the third slope 16, two balls 7 are squeezed, so that the fixed rod 6 drives the sliding block 5 and the sliding rod 10 to move inward, and then makes two connecting plates 11 become V-shaped and rotate counterclockwise by a certain angle, that is, the current state is the same as the state when shoveling. After two connecting plates 11 continue to move with the conveyor belt 1, when they move to the non-slope 17, but have not yet left the non-slope 17, at this time the opening of the cavity formed by two connecting plates 11 is downward, so that the material in the cavity falls into the car hopper. At the moment when the ball 7 and the non-slope 17 are separated, due to the setting of the non-slope 17, the elasticity of the spring 8 will be released instantly, at this time two connecting plates 11 will immediately change to the initial state, due to the instantaneous release of the elasticity of the spring 8, the ball 7 will have a rebounding force after hitting the inner wall of the sliding rail 13, and then the fixed rod 6 and the sliding block 5 will move back and forth once or twice, and then two connecting plates 11 will produce a shaking effect of shape switching, to shake off the residual material in the cavity. The above is the material forming process of a group of connecting plates 11, and the movement form of the remaining groups of connecting plates 11 is the same as the above process.

[0043] It should be noted that after a group of connecting plates 11 finishes filling the container 20, the vibration base 21 and the hydraulic cylinder 23 can be started, the vibration base 21 will vibrate for a certain time and frequency to make the top surface of the material in the container 20 restore to the horizontal state, and at the same time the hydraulic cylinder 23 will drive the movable plate 22 to move upward by a certain distance, which can make the top surface of the material in the container 20 restore to the horizontal state and the initial height after a part of the material is shovelled, so as to facilitate the subsequent connecting plates 11 to fill the material, and ensure that the material filled by each group of connecting plates 11 is approximately the same.

[0044] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous changes, modifications, substitutions and variations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A telescopic automatic sand conveying device comprising a conveyor belt (1), characterized in that: Two slide rails (13) are symmetrically arranged on both sides of the conveying belt (1), and are fixed on a support frame (19). A transmission mechanism for driving the conveying belt (1) to run is arranged on the slide rails (13). The outer surface of the conveying belt (1) is fixedly connected with a plurality of equidistantly distributed fixing members (2). The top surface of each fixing member (2) is fixedly connected with a fixing column (3). One side of the fixing column (3) is provided with a feeding assembly for shoveling and conveying materials. The lower side of one side of the conveying belt (1) is provided with a feeding mechanism for feeding the feeding assembly. The inner side wall of the slide rail (13) is sequentially provided with a second slope (15), a first slope (14), a third slope (16) and a non-slope (17). The feeding assembly comprises two connecting plates (11) which are hingedly connected. The inner part of both ends of the fixing column (3) is provided with a sliding cavity (4). The inner part of the sliding cavity (4) is slidably connected with a sliding block (5). The outer side of the sliding block (5) is fixedly connected with a fixing rod (6). The inner side of the sliding block (5) is fixedly connected with a spring (8). One end of the spring (8) is fixedly connected with the inner wall of the sliding cavity (4). The outer wall of both ends of the fixing column (3) is provided with an arc-shaped limiting sliding groove (9). The limiting sliding groove (9) is communicated with the sliding cavity (4). The inner side of the limiting sliding groove (9) is slidably connected with a sliding rod (10). One end of the sliding rod (10) is fixedly connected with the sliding block (5). The other end of the sliding rod (10) is rotatably connected with the connecting plate (11).

2. The telescopic automatic sand conveying device according to claim 1, characterized in that: The transmission mechanism comprises two parallel transmission rollers (12) which are drivingly connected through the conveying belt (1). Both of the transmission rollers (12) are rotatably connected with the slide rail (13). The outer side wall of the slide rail (13) is fixedly installed with a motor (18). The output shaft of the motor (18) is fixedly connected with one of the transmission rollers (12).

3. The telescopic automatic sand conveying device according to claim 1, characterized in that: The outer end of the fixing rod (6) is movably embedded with a ball (7).

4. The telescopic automatic sand conveying device according to claim 3, characterized in that: The ball (7) is abutted against the inner side wall of the slide rail (13) through the elastic force of the spring (8), and sequentially contacts the second slope (15), the first slope (14), the third slope (16) and the non-slope (17) in the conveying process of the conveying belt (1).

5. A telescopic automatic sand conveying device as claimed in claim 4, wherein: The outer surface of the conveying belt (1) is fixedly connected with a plurality of stretchable cloths (24) corresponding to the feeding assembly. The stretchable cloth (24) is in a U-shaped structure. The top of the stretchable cloth (24) is fixedly connected with the bottom surface of the two connecting plates (11) of the feeding assembly.

6. The telescopic automatic sand conveying device according to claim 1, characterized in that: The feeding mechanism comprises a material containing box (20). The bottom end of the material containing box (20) is installed with a vibrating base (21). The inner part of the material containing box (20) is slidably connected with a movable plate (22). The bottom inner wall of the material containing box (20) is fixedly installed with two hydraulic cylinders (23). The output ends of the two hydraulic cylinders (23) are fixedly connected with the movable plate (22).

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