A weighbridge purging device

Abstract

The utility model belongs to the technical field of ground weight cleaning device, concretely relates to a ground weight blowing device, including installation base, platform and sensor, the both sides of installation base are provided with slope, be equipped with the mounting groove on installation base, platform is located in the mounting groove, platform is connected with the bottom of mounting groove through sensor, the sensor is provided with a plurality of, and is set in groups, be equipped with a plurality of blowing pipe in the mounting groove, every group sensor at least corresponds a blowing pipe, be equipped with inclined hole on the blowing pipe, and the inclined hole is towards sensor setting, the left and right sides of installation base all are equipped with limit blowing device, the limit blowing device includes mobile support block and telescopic cylinder, the mobile support block is connected with installation base sliding, and installation base is equipped with corresponding accommodating cavity, the front and back side walls of accommodating cavity are equipped with respectively and blow air pipe, the blowing pipe can be accurate to blow to sensor through inclined hole with compressed air, effectively removes the sundries such as dust.

Description

Technical Field

[0001] This utility model belongs to the technical field of weighbridge cleaning devices, specifically relating to a weighbridge blowing device. Background Technology

[0002] Weighbridges are the primary equipment for measuring coal, ash, gypsum, and other byproducts in thermal power plants, serving as crucial evidence for cost accounting, fuel inventory management, and supplier settlements. Frequent driving, unloading, and turning around by coal-carrying vehicles in and around the weighbridge inevitably spills, scatters, and disperses large amounts of coal dust and powder. These materials accumulate in the gaps between the weighbridge and its foundation, potentially causing uneven stress on the sensors or jamming, leading to weighing errors or malfunctions. Rain, snow, or vehicle washing introduces water and mud, which mix with the coal dust to form a sticky sludge that is even more difficult to clean and prone to freezing at low temperatures. Traditional methods of manually cleaning this accumulated dust using brooms, shovels, and other tools are inefficient, labor-intensive, and incomplete (especially in crevices and the bottom), requiring downtime and posing safety risks to personnel due to vehicle traffic. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a weighbridge blowing device that can blow away debris from the bottom of the weighbridge.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A weighbridge purging device includes a mounting base, a weighing platform, and sensors. The mounting base has ramps on both sides and a mounting groove on the mounting base. The weighing platform is located in the mounting groove and is connected to the bottom of the mounting groove through sensors. Several sensors are provided and arranged in groups. The mounting slot is provided with a number of purge pipes, and each group of sensors corresponds to at least one purge pipe. The purge pipe is provided with an oblique hole, which is set towards the sensor. Both sides of the mounting base are equipped with limiting and purging devices, each including a movable support block and a telescopic cylinder. The movable support block is slidably connected to the mounting base, which has a corresponding receiving cavity. The front and rear side walls of the receiving cavity are respectively provided with a discharge port and an air blowing pipe. The telescopic cylinder can drive the movable support block to move, allowing it to approach or move away from the side of the weighing platform. When the movable support block approaches the side of the weighing platform, it blocks the discharge port and the air blowing pipe. When the movable support block moves away from the side of the weighing platform, it exposes the discharge port and the air blowing pipe.

[0005] The purge pipe is connected to the bottom of the mounting groove via a fixing device; the fixing device includes a fixing ring and a support base, the fixing ring and the support base are opposite to each other and spaced apart, and one end of the purge pipe can pass through the support base and abut against the fixing ring.

[0006] The purge pipe is fixedly provided with a limiting protrusion; a connecting sleeve is fitted on the purge pipe; the connecting sleeve is threadedly connected to the support base, and the support base is provided with a corresponding connecting pipe.

[0007] Both the fixed retaining ring and the purge pipe are provided with limiting teeth, and the two limiting teeth mesh with each other.

[0008] The limiting purging device also includes a push block and a top block, both of which are slidably connected to the movable support block. Both the push block and the top block have mutually cooperating inclined surfaces. The two ends of the telescopic cylinder are respectively connected to the mounting base and the push block. The movable support block has a first limiting protrusion that restricts the movement of the push block. The bottom of the mounting groove has a second limiting protrusion that restricts the movement of the movable support block.

[0009] One of the limiting blow-off devices has bristles on its top block.

[0010] Compared with the prior art, the advantages of this utility model are: The purge pipe can precisely blow compressed air through the oblique hole to the sensor, effectively removing dust and other debris, preventing them from affecting the sensor's sensitivity, and ensuring long-term accuracy of weighing results.

[0011] The movable support block of the limiting blowing device moves forward during weighing to narrow the gap and prevent large objects from falling in; it moves backward during cleaning to activate the blowing function and blow out the debris in the gap from the discharge port, effectively avoiding the problem of the cleaning holes being blocked.

[0012] The device achieves the lifting and lowering function of the top block through the linkage of the push block, the top block, and the telescopic cylinder. The brush on the top block on the entrance side can pre-sweep away debris under the vehicle, while the extended top block on the exit side also serves as a deceleration indicator. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model after removing part of the weighing platform; Figure 3 This is a half-sectional structural diagram of the present invention; Figure 4 yes Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a cross-sectional view of the discharge port of this utility model; Figure 6 This is a sectional perspective view of the present invention; Figure 7 yes Figure 6 A magnified view of a section at point B in the middle; Figure 8 This is a schematic diagram of the structure of the limiting tooth of this utility model; Wherein: 1 is the mounting base, 10 is the receiving cavity, 2 is the weighing platform, 3 is the sensor, 4 is the ramp, 5 is the mounting groove, 6 is the blowing pipe, 60 is the inclined hole, 7 is the limiting blowing device, 70 is the moving support block, 71 is the brush bristles, 72 is the waste discharge port, 73 is the air blowing pipe, 74 is the push block, 75 is the top block, 76 is the first limiting protrusion, 77 is the second limiting protrusion, 78 is the telescopic cylinder, 8 is the fixing device, 80 is the fixing retaining ring, 81 is the support base, 82 is the limiting protrusion, 83 is the connecting sleeve, 84 is the connecting pipe, and 85 is the limiting tooth. Detailed Implementation

[0014] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0015] like Figure 1-8 As shown, a weighbridge purging device includes a mounting base 1, a weighing platform 2, and sensors 3. The mounting base 1 has ramps 4 on both sides and a mounting groove 5 on its surface. The weighing platform 2 is located within the mounting groove 5 and is connected to the bottom of the mounting groove 5 via sensors 3. Several sensors 3 are provided and arranged in groups.

[0016] The mounting slot 5 is provided with several purge pipes 6, and each group of sensors 3 corresponds to at least one purge pipe 6. The purge pipe 6 is provided with an oblique hole 60, which is set towards the sensor 3.

[0017] For example, six sensors 3 are provided, with two sensors 3 arranged as a group at the bottom of the mounting slot 5; at least three purge pipes 6 are provided, that is, each group of sensors 3 corresponds to one purge pipe 6; however, in order to improve the purge effect, the middle group of sensors 3 corresponds to two purge pipes 6. Each purge pipe 6 is connected to an air compressor (providing compressed air), and the compressed air is ejected through the inclined holes 60 of the purge pipe 6, thereby blowing out the debris; each purge pipe 6 is provided with several inclined holes 60.

[0018] Limiting purge devices 7 are provided on both the left and right sides of the mounting base 1. Each limiting purge device 7 includes a movable support block 70 and a telescopic cylinder 78. The movable support block 70 is slidably connected to the mounting base 1, and the mounting base 1 has a corresponding receiving cavity 10. The front and rear side walls of the receiving cavity 10 are respectively provided with a discharge port 72 and an air blowing pipe 73. The air blowing pipe 73 is also connected to an air compressor, and compressed air is blown out through the air blowing pipe 73 towards the discharge port 72. The purge pipe 6, the air blowing pipe 73, and the air compressor are all connected by corresponding valves for control.

[0019] The telescopic cylinder 78 can move the movable support block 70, allowing it to approach or move away from the side of the weighing platform 2. During normal weighing operations, the movable support block 70 approaches the side of the weighing platform 2 to reduce the gap between them and prevent debris from falling in. When cleaning is required, the movable support block 70 moves away from the side of the weighing platform 2 to increase the gap between them, making it easier to clean up debris.

[0020] When the movable support block 70 approaches the side of the weighing platform 2, it blocks the discharge port 72 and the air blowing pipe 73, preventing debris from entering them. When the movable support block 70 moves away from the side of the weighing platform 2, it exposes the discharge port 72 and the air blowing pipe 73. At this time, compressed air is ejected from the air blowing pipe 73 toward the discharge port 72, thereby blowing out any debris between the movable support block 70 and the side of the weighing platform 2 from the discharge port 72.

[0021] Furthermore, the purge pipe 6 is connected to the bottom of the mounting groove 5 via a fixing device 8; the fixing device 8 includes a fixing ring 80 and a support base 81, the fixing ring 80 and the support base 81 are opposite to each other and spaced apart, one end of the purge pipe 6 can pass through the support base 81 and abut against the fixing ring 80, thereby playing a fixing role.

[0022] Specifically: A limiting protrusion 82 is fixedly provided on the purge pipe 6; a connecting sleeve 83 is fitted on the purge pipe 6. One end of the purge pipe 6 can pass through the support base 81 and abut against the fixed retaining ring 80. By rotating the connecting sleeve 83, the connecting sleeve 83 is threadedly connected to the connecting pipe 84 on the support base 81 until the side wall of the connecting sleeve 83 abuts against the limiting protrusion 82 on the purge pipe 6, thus completing the fixation of the purge pipe 6.

[0023] Furthermore, both the fixed retaining ring 80 and the purge pipe 6 are provided with limiting teeth 85, which mesh with each other; the installation angle of the purge pipe 6 can be adjusted as needed (by rotating it around its axis); after adjustment, the two limiting teeth 85 are meshed together to limit the movement; finally, the connecting sleeve 83 is tightened to fix it.

[0024] Furthermore, the limiting purging device 7 also includes a push block 74 and a top block 75, both of which are slidably connected to the movable support block 70, which has a corresponding internal cavity. Both the push block 74 and the top block 75 have mutually cooperating inclined surfaces. When the push block 74 moves horizontally forward, the inclined surfaces between them can push the top block 75 upward.

[0025] The two ends of the telescopic cylinder 78 are fixedly connected to the mounting base 1 and the push block 74, respectively; the extension and retraction of the piston rod of the telescopic cylinder 78 can drive the push block 74 to move. A first limiting protrusion 76 is provided on the movable support block 70 to restrict the movement of the push block 74; a second limiting protrusion 77 is provided at the bottom of the mounting groove 5 to restrict the movement of the movable support block 70.

[0026] When it is necessary to reduce the distance between the movable support block 70 and the side of the weighing platform 2, the piston rod of the telescopic cylinder 78 extends and first drives the push block 74 to move and the top block 75 to move up until the push block 74 abuts against the inner wall of the movable support block 70; then the piston rod of the telescopic cylinder 78 continues to extend and pushes the movable support block 70 forward, thereby reducing the distance between the movable support block 70 and the side of the weighing platform 2 until the movable support block 70 abuts against the second limiting protrusion 77.

[0027] When it is necessary to increase the distance between the movable support block 70 and the side of the weighing platform 2, the piston rod of the telescopic cylinder 78 retracts and drives the push block 74 to move backward. The top block 75 moves downward under the action of gravity (of course, a spring can be set between the top block 75 and the movable support block 70, with the two ends of the spring fixedly connected to the top block 75 and the movable support block 70 respectively, and the elastic potential energy released by the spring pushes the top block 75 downward), until the push block 74 abuts against the first limiting protrusion 76; then the piston rod of the telescopic cylinder 78 continues to retract and pulls the movable support block 70 to move backward, thereby increasing the distance between the movable support block 70 and the side of the weighing platform 2, until the piston rod of the telescopic cylinder 78 is completely retracted.

[0028] Furthermore, one of the limiting blow-off devices 7 has a brush 71 on its top block 75, specifically on the limiting blow-off device 7 on the vehicle entry side, and the length of the top block 75 is less than the length of the top block 75 in the other limiting blow-off device 7 (i.e., the exit side).

[0029] The top block 75 of the outlet-side limiting blow-off device 7 can act as a "speed bump" and a warning to prevent vehicles from exceeding the weighing platform 2; while the bristles 71 on the top block 75 of the inlet-side limiting blow-off device 7 can contact the bottom of the vehicle during vehicle movement to sweep away debris from the bottom of the vehicle.

[0030] The above description only describes the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments.

Claims

1. A weighbridge purging device, characterized in that: The system includes a mounting base (1), a weighing platform (2), and a sensor (3). The mounting base (1) has ramps (4) on both sides and a mounting groove (5) on the mounting base (1). The weighing platform (2) is located in the mounting groove (5) and is connected to the bottom of the mounting groove (5) through the sensor (3). The sensor (3) is provided in several groups. The mounting slot (5) is provided with a number of purge pipes (6), and each group of sensors (3) corresponds to at least one purge pipe (6). The purge pipe (6) is provided with an oblique hole (60) facing the sensor (3). The mounting base (1) is provided with limiting blowing devices (7) on both the left and right sides. The limiting blowing device (7) includes a movable support block (70) and a telescopic cylinder (78). The movable support block (70) is slidably connected to the mounting base (1). The mounting base (1) is provided with a corresponding receiving cavity (10). The front and rear side walls of the receiving cavity (10) are respectively provided with a discharge port (72) and an air blowing pipe (73). The telescopic cylinder (78) can drive the movable support block (70) to move, so that the movable support block (70) approaches or moves away from the side of the weighing platform (2). When the movable support block (70) approaches the side of the weighing platform (2), the movable support block (70) will block the discharge port (72) and the air blowing pipe (73). When the movable support block (70) moves away from the side of the weighing platform (2), the movable support block (70) will expose the discharge port (72) and the air blowing pipe (73).

2. The weighbridge purging device according to claim 1, characterized in that: The purge pipe (6) is connected to the bottom of the mounting groove (5) by a fixing device (8); the fixing device (8) includes a fixing ring (80) and a support seat (81), the fixing ring (80) and the support seat (81) are opposite to each other and spaced apart, and one end of the purge pipe (6) can pass through the support seat (81) and abut against the fixing ring (80).

3. The weighbridge purging device according to claim 2, characterized in that: The purge pipe (6) is fixedly provided with a limiting protrusion (82); the purge pipe (6) is fitted with a connecting sleeve (83); the connecting sleeve (83) is threadedly connected to the support base (81), and the support base (81) is provided with a corresponding connecting pipe (84).

4. A weighbridge purging device according to claim 2 or 3, characterized in that: Both the fixed retaining ring (80) and the purge pipe (6) are provided with limiting teeth (85), and the two limiting teeth (85) mesh with each other.

5. A weighbridge purging device according to claim 1, characterized in that: The limiting purging device (7) further includes a push block (74) and a top block (75), both of which are slidably connected to the movable support block (70). Both the push block (74) and the top block (75) are provided with mutually cooperating inclined surfaces. The two ends of the telescopic cylinder (78) are respectively connected to the mounting base (1) and the push block (74). The movable support block (70) is provided with a first limiting protrusion (76) that restricts the movement of the push block (74). The bottom of the mounting groove (5) is provided with a second limiting protrusion (77) that restricts the movement of the movable support block (70).

6. A weighbridge purging device according to claim 5, characterized in that: One of the limiting blow-off devices (7) has bristles (71) on its top block (75).

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