Pressure reducing device of re-checking scale

Abstract

The utility model discloses a pressure reducing device of a re-checking scale, which comprises a scale body, a belt conveyor is arranged on the scale body, the bottom end of the belt conveyor is communicated with the inside of the scale body, a dust remover is arranged on one side of the scale body, and a dust removing pipe is connected between the dust remover and the scale body, and by adopting the pressure reducing device of the re-checking scale, the weighing accuracy is ensured, and the environmental pollution is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of material conveying and dust removal, and specifically relates to a pressure reducing device for a review scale. Background Art

[0002] At present, the recheck scale is used in indoor workshops. As the distance between workshops is reduced, the capacity of the recheck scale is also reduced. The accuracy of material weight weighing is particularly important. The material is transported to the recheck scale with the belt conveyor for vertical drop. However, the weighing belt is offset during the feeding process due to the position of the drop point. The internal pressure of the recheck scale also increases, causing the scale body to shake to a large extent, affecting the stability of the scale body. The recheck scale cannot weigh the accurate value of the material. The excessive pressure inside the scale body will also cause the material dust to be discharged from the gap of the mechanism, causing environmental pollution. The current solution is to make a breathing hood structure with a hole on the surface of the recheck scale, but the effect is not good. The scale body will still shake greatly, and dust will be discharged from the hole, causing environmental pollution in the workshop.

[0003] The utility model patent with announcement number CN209192290U was disclosed on August 2, 2019. The name is a quantitative packaging scale with a dust removal mechanism, including a feeding port, a motor, a dust hood and a fan. A scale body is arranged below the feeding port, and a discharge port is connected below the scale body. The discharge port is arranged above the first conveyor belt, and the first conveyor belt is connected to the motor, and a rotating rod is connected to the motor, and the rotating rod is connected to the rotating rod through a rotating belt, and the rotating rod is arranged on the support rod, and the rotating rod is connected to a gear, and the gear is connected to the second conveyor belt. The dust hood is arranged below the inner side of the discharge port, and the dust hood is connected to the dust box through the fan. The quantitative packaging scale with the dust removal mechanism cannot solve the problem of the scale body shaking and cannot guarantee the weighing accuracy. Utility Model Content

[0004] The utility model aims to provide a pressure reducing device for a review scale which can ensure weighing accuracy and reduce environmental pollution in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The decompression device of the review scale comprises a scale body, a belt conveyor is arranged on the scale body, the bottom end of the belt conveyor is connected with the inside of the scale body, a dust collector is arranged on one side of the scale body, and a dust removal pipe is connected between the dust collector and the scale body.

[0007] The end of the dust removal pipe is connected with a branch pipe, the branch pipe is in an L-shaped structure, and the bottom end of the branch pipe is connected to one end of the scale body.

[0008] A first connecting pipe is provided at one end of the scale body, the branch pipe vertically corresponds to the first connecting pipe, a first flexible connection is connected between the branch pipe and the first connecting pipe, and a second flexible connection is provided between the bottom end of the belt conveyor and the scale body.

[0009] A filter bag is arranged inside the dust collector, an ash hopper is arranged at the bottom of the dust collector, a chute is arranged at the bottom of the ash hopper, a second connecting pipe is arranged at the other end of the scale body, a third flexible connection is connected between the chute and the second connecting pipe, and an ash discharge valve is arranged between the ash hopper and the chute.

[0010] A gap is provided between the branch pipe and the first connecting pipe, and a gap is provided between the slide pipe and the second connecting pipe.

[0011] The ash hopper and the bottom end of the belt conveyor are both conical structures.

[0012] Both ends of the dust removal pipe are provided with connecting flanges.

[0013] The technical effect of the utility model is as follows: by adopting the decompression device of the review scale of the utility model, a dust collector is added on one side of the review scale, and the excessive pressure generated by the review scale during feeding is eliminated through the suction effect of the dust removal pipe, so that the internal pressure of the review scale is reduced in time, and the problems of violent shaking and dust diffusion of the scale body during the feeding process are solved, thereby ensuring the weighing accuracy of the review scale and the on-site environmental hygiene, and at the same time combining the use of ash hoppers and chutes, while reducing dust emissions, it also achieves the effect of material recovery and reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] This specification includes the following drawings, which show the following contents:

[0015] Figure 1 It is a schematic diagram of the main structure of the pressure reducing device of the review scale of the utility model;

[0016] Figure 2 It is a side structural schematic diagram of the pressure reducing device of the review scale of the utility model;

[0017] Figure 3 The utility model is a schematic diagram of the structure of the pressure reducing device of the review scale in a top view.

[0018] The markings in the figure are: 1. scale body; 2. belt conveyor; 3. dust collector; 4. dust removal pipe; 5. branch pipe; 6. chute; 7. first flexible connection; 8. second flexible connection; 9. first connecting pipe; 10. ash hopper; 11. ash discharge valve; 12. connecting flange; 13. filter bag; 14. third flexible connection; 15. second connecting pipe. DETAILED DESCRIPTION

[0019] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0020] like Figures 1 to 3 As shown, the pressure reducing device of the review scale comprises a scale body 1, on which a belt conveyor 2 is provided, the bottom end of the belt conveyor 2 is connected to the inside of the scale body 1, a dust collector 3 is provided on one side of the scale body 1, and a dust removal pipe 4 is connected between the dust collector 3 and the scale body 1.

[0021] The belt conveyor 2 conveys the material through the belt to pass the material into the verification scale for weighing. The top of the belt conveyor 2 is connected to the dust collector 3 through the dust removal pipe 4. The dust collector 3 can absorb the material dust generated during the feeding process and eliminate the pressure generated by the unloading, which has a decompression effect on the inside of the scale body 1, so that the shaking degree of the scale body 1 during the feeding process is reduced, thereby ensuring the accuracy of the weighing.

[0022] like Figures 1 to 3 As shown, the end of the dust removal pipe 4 is connected to a branch pipe 5, which is in an L-shaped structure, and the bottom of the branch pipe 5 is connected to one end of the scale body 1. A branch pipe 5 is opened from the dust removal pipe 4 and extends out, and the surface of the scale is opened and welded to the branch pipe 5 to achieve the connection between the end of the scale body 1 and the dust removal pipe 4. The branch pipe 5 is in an L-shaped structure and does not affect the belt conveyor 2. The length of the branch pipe 5 is 0.7m and the aperture is 230mm. Under the suction of the dust removal pipe 4 and the branch pipe 5, the scale body 1 can be subjected to a more uniform decompression effect, and the material inside the scale body 1 is less disturbed, so as to achieve the purpose of ensuring the weighing accuracy.

[0023] like Figure 1 and Figure 2 As shown, a first connecting pipe 9 is provided at one end of the scale body 1, the branch pipe 5 corresponds vertically to the first connecting pipe 9, a first flexible connection 7 is connected between the branch pipe 5 and the first connecting pipe 9, and a second flexible connection 8 is provided between the bottom end of the belt conveyor 2 and the scale body 1. The first flexible connection 7 wraps up the gap between the branch pipe 5 and the first connecting pipe 9, which is helpful to resist the shaking of the scale body 1, does not affect the accuracy of weighing, and can also play a dust-proof effect. The second flexible connection 8 avoids the direct connection between the belt conveyor 2 and the scale body 1, which can reduce the shaking interference effect of the belt conveyor 2 on the scale body 1. The flexible connection is flexible, which is more conducive to improving the stability of the scale body 1 than directly using a rigid tube.

[0024] like Figure 1As shown, a filter bag 13 is provided inside the dust collector 3, an ash hopper 10 is provided at the bottom of the dust collector 3, a chute 6 is provided at the bottom of the ash hopper 10, a second connecting pipe 15 is provided at the other end of the scale body 1, a third flexible connection 14 is connected between the chute 6 and the second connecting pipe 15, and an ash discharge valve 11 is provided between the ash hopper 10 and the chute 6. By providing the third flexible connection 14 to connect the gap between the chute 6 and the second connecting pipe 15, the recheck scale can be prevented from being affected by the operation of the chute 6, which is conducive to further improving the stability of the scale body 1. The filter bag 13 is made of textile filter cloth or non-textile felt, and uses the filtering effect of fiber fabric to filter dust-containing gas. When the dust-containing gas enters the filter bag 13 for dust removal, the dust with large particles and high specific gravity will settle down due to the effect of gravity and directly fall into the ash hopper 10. The dust after dust removal falls into the bottom of the ash hopper 10 and accumulates. By opening the ash discharge valve 11, the dust is discharged from the dust collector 3 through the chute 6 and then enters the inside of the scale body 1 under the action of the spiral mechanism inside the chute 6, so as to realize the recycling and reuse of materials. The gas containing finer dust will not directly settle into the ash hopper 10 due to its small particles and specific gravity when passing through the filter bag 13. The dust is retained by the filter bag 13, so that the dust-containing gas is purified.

[0025] like Figure 1 and Figure 2 As shown, there is a gap between the branch pipe 5 and the first connecting pipe 9, and there is a gap between the slide pipe 6 and the second connecting pipe 15. Since the sensor device is provided inside the rechecking scale, a gap of 50 mm is reserved between the branch pipe 5 and the first connecting pipe 9, and a gap is also reserved between the slide pipe 6 and the second connecting pipe 15. Both gaps are connected and sealed by soft connections, so that the scale body 1 is not directly connected to the branch pipe 5 or the slide pipe 6, so as to avoid the rechecking scale from being disturbed and ensure its weighing accuracy.

[0026] like Figure 1 and Figure 2 As shown, the bottom ends of the ash hopper 10 and the belt conveyor 2 are both conical structures. The above structure can increase the flow rate of the material and reduce the accumulation redundancy of the material in the ash hopper 10 and the belt conveyor 2.

[0027] like Figure 2 As shown, both ends of the dust removal pipe 4 are provided with connecting flanges 12. The dust removal pipe 4 can be installed between the top of the belt conveyor 2 and the dust collector 3 through the connecting flange 12, which is convenient for installation, disassembly, inspection and maintenance.

[0028] The working principle is as follows: when the material begins to enter the scale body 1 through the conveyor belt 2, the pressure generated by the material gradually increases, and the dust diffuses and moves upward. At this time, the suction of the dust collector 3 starts to work, which can speed up the suction of dust to reduce the pressure in the scale, so that the pressure inside the scale body 1 can be reduced in time, and the suction pressure reduction effect of multiple positions of the scale body 1 is exerted through the pipeline, thereby reducing the shaking of the scale body 1 and will not affect the weighing value, which not only ensures the accuracy of the weighing but also controls the on-site environmental hygiene.

[0029] The decompression device of the recheck scale is equipped with a dust collector 3 on one side of the recheck scale. The excessive pressure generated by the recheck scale during feeding is eliminated through the suction effect of the dust removal pipe 4, so that the internal pressure of the recheck scale is reduced in time, and the problems of violent shaking and dust diffusion of the scale body 1 during the feeding process are solved, thereby ensuring the weighing accuracy of the recheck scale and the on-site environmental hygiene. At the same time, combined with the use of the ash hopper 10 and the chute 6, the dust emission is reduced while also achieving the effect of material recovery and reuse.

[0030] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A pressure reducing device for a verification scale, characterized in that: The scale body (1) comprises a scale body (1), a belt conveyor (2) is provided on the scale body (1), the bottom end of the belt conveyor (2) is connected to the inside of the scale body (1), a dust collector (3) is provided on one side of the scale body (1), and a dust removal pipe (4) is connected between the dust collector (3) and the scale body (1).

2. The decompression device for a verification scale according to claim 1, characterized in that: The end of the dust removal pipe (4) is connected to a branch pipe (5), the branch pipe (5) is in an L-shaped structure, and the bottom end of the branch pipe (5) is connected to one end of the scale body (1).

3. The decompression device for a verification scale according to claim 2, characterized in that: A first connecting pipe (9) is provided at one end of the scale body (1), the branch pipe (5) vertically corresponds to the first connecting pipe (9), a first flexible connection (7) is connected between the branch pipe (5) and the first connecting pipe (9), and a second flexible connection (8) is provided between the bottom end of the belt conveyor (2) and the scale body (1).

4. The decompression device for a verification scale according to claim 2 or 3, characterized in that: A filter bag (13) is provided inside the dust collector (3), an ash hopper (10) is provided at the bottom of the dust collector (3), a chute (6) is provided at the bottom of the ash hopper (10), a second connecting pipe (15) is provided at the other end of the scale body (1), a third flexible connection (14) is connected between the chute (6) and the second connecting pipe (15), and an ash discharge valve (11) is provided between the ash hopper (10) and the chute (6).

5. The decompression device for the verification scale according to claim 4, characterized in that: A gap is provided between the branch pipe (5) and the first connecting pipe (9), and a gap is provided between the slide pipe (6) and the second connecting pipe (15).

6. The decompression device for a verification scale according to claim 4, characterized in that: The bottom ends of the ash hopper (10) and the belt conveyor (2) are both conical structures.

7. The decompression device for a verification scale according to claim 1, characterized in that: Both ends of the dust removal pipe (4) are provided with connecting flanges (12).

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