A ready-mix concrete dust metering device

Abstract

The utility model discloses a kind of pre-mixed concrete dust metering equipment, including vertical dust suction pipeline, the upper end of dust suction pipeline is open, lower end is provided with suction fan, filter device is provided on the dust suction pipeline, weighing device is provided below the filter device, gap is provided on the dust suction pipeline, and gap divides dust suction pipeline into two sections, the filter device is located in gap, and with the end of two sections of dust suction pipeline detachable connection, dust removal and concentration detection realize two functions, reduce the investment cost of equipment.

Description

Technical Field

[0001] This utility model belongs to the field of metering equipment technology, and more specifically relates to a premixed concrete dust metering device. Background Technology

[0002] Ready-mixed concrete refers to a mixture made from cement, aggregates, water, and, as needed, admixtures and mineral additives, measured and prepared at a mixing plant. The mixing of ready-mixed concrete generates a large amount of dust. This airborne dust, when inhaled, poses a health threat. Therefore, it is necessary to monitor the airborne dust concentration and implement dust removal in real time. However, most current dust removal equipment is relatively simple, only providing dust collection, and concentration detection devices only provide concentration detection. Both are indispensable in a concrete mixing plant, resulting in significant investment costs. This is especially true in large-scale plants where multiple dust collection and detection devices are often installed, further increasing equipment costs. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a premixed concrete dust metering device that can filter dust and detect its concentration, thereby reducing equipment investment costs.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a premixed concrete dust metering device, comprising a vertical dust collection pipe, the upper end of which is open and the lower end of which is equipped with a suction fan, a filter device on which is installed, a weighing device below which is installed, a gap in which the dust collection pipe is divided into upper and lower sections, the filter device being located within the gap and detachably connected to the ends of the upper and lower sections of the dust collection pipe.

[0005] Furthermore, the filtration device includes two fixed rings and two mounting rings. A filter membrane is disposed between the two fixed rings. The two mounting rings are located on opposite sides of the two fixed rings. A first retaining ring is disposed on the outer circular surface of the fixed ring. A second retaining ring corresponding to the first retaining ring is disposed on the inner circular surface of the mounting ring. A third retaining ring corresponding to the end of the suction pipe is disposed on the inner circular surface of the mounting ring. The third retaining ring and the inner circular surface of the mounting ring form an installation area. A sliding area is formed between the second retaining ring and the third retaining ring. The first retaining ring is located within the sliding area, allowing the mounting ring to slide axially on the fixed block. A driving device and a translation mechanism are disposed on the mounting ring. The driving device drives the mounting ring to move along the axis, and the translation mechanism moves the fixed ring and the mounting ring out of the gap.

[0006] Furthermore, the driving device includes a driving block located on one side of the mounting ring. The driving block slides radially along the dust suction pipe. A driving mechanism is connected to the driving block. A first wedge-shaped surface is provided on the driving block. A second wedge-shaped surface corresponding to the first wedge-shaped surface is provided on the outer circular surface of the mounting ring near the driving block. A T-shaped locking block is provided on the second wedge-shaped surface. A T-shaped locking groove is provided on the first wedge-shaped surface.

[0007] Furthermore, the translation mechanism includes a translation guide rail and a translation bracket, the drive block is slidably connected to the translation bracket, the translation bracket is slidably connected to the translation guide rail, and the fixing ring is connected to the translation bracket.

[0008] Furthermore, the weighing device includes a weighing instrument and a support frame, the weighing instrument being vertically connected to the support frame, and a driver being connected to the weighing instrument.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: After the filter device is connected to the upper and lower sections of the dust collection pipe in the gap, the suction fan can be started to remove dust and filter the dust in the air. After filtering for a period of time, the filter device is separated from the upper and lower sections of the dust collection pipe and extends out of the gap. Then, the dust collection device is weighed by a weighing device and compared with the weight before filtration. The average dust content in the unit volume of air during the dust removal stage, i.e., the dust concentration, is calculated by the air intake volume of the dust collection pipe per unit time. This achieves two functions and reduces the investment cost of the equipment. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the premixed concrete dust metering device under filtered conditions.

[0011] Figure 2 This is a schematic diagram of the premixed concrete dust metering device under weighing conditions.

[0012] Figure 3 This is a front structural diagram of the filter device in the premixed concrete dust metering equipment of this utility model;

[0013] Figure 4 This is a schematic diagram of the structure of the filter device connected to the dust collection pipe in the premixed concrete dust metering equipment of this utility model;

[0014] Figure 5 This is a schematic diagram of the structure of the filter device separating the dust collection pipe in the premixed concrete dust metering equipment of this utility model;

[0015] Figure 6 for Figure 1 Enlarged view of section A.

[0016] Reference numerals: 1. Suction pipe; 2. Suction fan; 3. Filter device; 4. Weighing device; 5. Gap; 6. Fixing ring; 7. Mounting ring; 8. Filter membrane; 9. First retaining ring; 10. Second retaining ring; 11. Third retaining ring; 12. Mounting area; 13. Bolt; 14. Drive block; 15. First wedge surface; 16. Second wedge surface; 17. Cylinder; 18. Translation guide rail; 19. Translation bracket; 20. Weighing device; 21. Support frame; 22. Driver. Detailed Implementation

[0017] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0019] Reference Figures 1 to 6 The present invention will be further described below.

[0020] A premixed concrete dust metering device includes a vertical dust collection pipe 1, with an open upper end and a suction fan 2 installed at the lower end. A filter device 3 is installed on the dust collection pipe 1, and a weighing device 4 is installed below the filter device 3. A gap 5 is provided on the dust collection pipe 1, dividing the dust collection pipe 1 into upper and lower sections. The filter device 3 is located in the gap 5 and is detachably connected to the ends of the upper and lower sections of the dust collection pipe 1.

[0021] like Figures 1 to 6As shown, when the filter device 3 enters the gap 5 between the upper and lower sections of the suction pipe 1, it connects and seals the gap 5, so that the upper and lower sections of the suction pipe 1 are connected through the filter device 3. After the suction fan 2 is started, it can suck in the external air through the opening at the upper end of the suction pipe 1. The dust in the air is filtered through the filter layer device, achieving the function of dust filtration. After filtering for a period of time, the filter device 3 separates from the suction pipe 1 and extends out from the gap 5. At this time, the filter device 3 is located above the weighing device 4. Then, the dust collection device is weighed by the weighing device 4 and compared with the weight before filtration. The average dust content, i.e., dust concentration, in the unit volume of air during the dust removal stage is calculated by the air intake volume of the suction pipe 1 per unit time.

[0022] The metering device in this embodiment not only has a dust removal function, but also a dust concentration detection function, thereby reducing the investment cost of the equipment.

[0023] Specifically, a filter device 3 and a weighing device 4 can be installed on both sides of the dust collection pipe 1. While one is filtering, the other is weighing and analyzing, so as to achieve alternating filtration and detection, ensuring filtration effect and periodic dust concentration detection.

[0024] like Figure 4 and Figure 5 As shown in the preferred embodiment, the filter device 3 includes two fixed rings 6 and two mounting rings 7. A filter membrane 8 is disposed between the two fixed rings 6. The two mounting rings 7 are respectively located on both sides of the two fixed rings 6. A first retaining ring 9 is disposed on the outer circular surface of the fixed ring 6. A second retaining ring 10 corresponding to the first retaining ring 9 is disposed on the inner circular surface of the mounting ring 7. A third retaining ring 11 corresponding to the end of the suction pipe 1 is disposed on the inner circular surface of the mounting ring 7. The third retaining ring 11 and the inner circular surface of the mounting ring 7 form a mounting area 12. A sliding area is formed between the second retaining ring 10 and the third retaining ring 11. The first retaining ring 9 is located in the sliding area, allowing the mounting ring 7 to slide axially on the fixed block. A driving device and a translation mechanism are disposed on the mounting ring 7. The driving device drives the mounting ring 7 to move along the axis, and the translation mechanism moves the fixed ring 6 and the mounting ring 7 out of the gap 5.

[0025] like Figure 4 As shown, specifically, when the driving device drives the two mounting rings 7 synchronously and away from each other, the first retaining ring 9 on the fixed ring 6 and the second retaining ring 10 on the mounting ring 7 engage with each other, and the mounting area 12 on the mounting ring 7 is engaged at the end of the suction pipe 1 located in the gap 5, thereby connecting the upper and lower sections of the suction pipe 1. When air passes through the filter membrane 8 between the two fixed rings 6 from the upper suction pipe 1, the dust in the air is filtered.

[0026] like Figure 5As shown, when the driving device drives the two mounting rings 7 synchronously and close to each other, the first retaining ring 9 separates from the second retaining ring 10, and the mounting area 12 also separates from the end of the suction pipe 1. At this time, the fixing ring 6 and the mounting ring 7 can be removed from the gap 5 between the upper and lower sections of the suction pipe 1 by the translation mechanism for weighing, replacing the filter membrane 8, and other operations.

[0027] like Figure 5 As shown, specifically, when the mounting ring 7 is separated from the suction pipe 1, the fixing ring 6 will be supported on the mounting ring 7 below due to gravity. That is, the first retaining ring 9 on the lower fixing ring 6 will contact the second retaining ring 10 on the lower mounting ring 7, while there is a certain distance between the upper first retaining ring 9 and the upper second retaining ring 10.

[0028] like Figure 3 and Figure 5 As shown, specifically, the two fixing rings 6 are connected by several bolts 13, the edge of the filter membrane 8 is passed through the bolts 13, and after tightening the bolts 13, the edge of the filter membrane 8 is clamped by the fixing rings 6 to realize the installation of the filter membrane 8.

[0029] Specifically, the first retaining ring 9 and the second retaining ring 10 are in sealed contact, and the mounting area 12 and the vacuum pipe 1 are in sealed connection to prevent air leakage from the vacuum pipe 1.

[0030] like Figure 6 As shown, in this preferred embodiment, the driving device includes a driving block 14 located on one side of the mounting ring 7. The driving block 14 slides radially along the dust suction pipe 1. A driving mechanism is connected to the driving block 14. A first wedge-shaped surface 15 is provided on the driving block 14. A second wedge-shaped surface 16 corresponding to the first wedge-shaped surface 15 is provided on the outer circular surface of the mounting ring 7 near the driving block 14. A T-shaped locking block (not shown in the figure) is provided on the second wedge-shaped surface 16. A T-shaped locking groove (not shown in the figure) is provided on the first wedge-shaped surface 15.

[0031] Specifically, when the drive mechanism moves the drive block 14 to the right, the two mounting rings 7 move away from each other synchronously, and the mounting rings 7 are connected to the suction pipe 1. When the drive block 14 moves to the left, the two mounting rings 7 move closer to each other synchronously, and the mounting rings 7 are separated from the suction pipe 1.

[0032] Specifically, the driving mechanism is cylinder 17.

[0033] like Figure 1 As shown, in this preferred embodiment, the translation mechanism includes a translation guide rail 18 and a translation bracket 19. The driving block 14 is slidably connected to the translation bracket 19, the translation bracket 19 is slidably connected to the translation guide rail 18, and the fixing ring 6 is connected to the translation bracket 19.

[0034] like Figure 1and Figure 2 As shown in the preferred embodiment, the weighing device 4 includes a weighing device 20 and a support frame 21. The weighing device 20 is vertically connected to the support frame 21, and a driver 22 is connected to the weighing device 20.

[0035] Specifically, when the process device extends from the hole 5, the weighing device 20 rises, contacts the fixed ring 6 and lifts the fixed ring 6, so that the first retaining ring 9 on both fixed rings 6 separates from the corresponding second retaining ring 10. Thus, the weighing device 20 weighs the total weight of the two fixed rings 6 plus the filter membrane 8, and then the controller compares it with the total weight before filtration to calculate the dust concentration.

[0036] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A pre-mixed concrete dust metering device, characterized in that: The device includes a vertical suction pipe with an open upper end and a suction fan at the lower end. A filter is installed on the suction pipe, and a weighing device is installed below the filter. The suction pipe has a gap that divides it into upper and lower sections. The filter is located in the gap and is detachably connected to the ends of the upper and lower sections of the suction pipe.

2. The ready-mixed concrete dust metering equipment according to claim 1, characterized in that: The filtration device includes two fixed rings and two mounting rings. A filter membrane is disposed between the two fixed rings. The two mounting rings are located on opposite sides of the two fixed rings. A first retaining ring is disposed on the outer circular surface of the fixed ring. A second retaining ring corresponding to the first retaining ring is disposed on the inner circular surface of the mounting ring. A third retaining ring corresponding to the end of the suction pipe is disposed on the inner circular surface of the mounting ring. The third retaining ring and the inner circular surface of the mounting ring form an installation area. A sliding area is formed between the second retaining ring and the third retaining ring. The first retaining ring is located within the sliding area, allowing the mounting ring to slide axially on the fixed block. A driving device and a translation mechanism are disposed on the mounting ring. The driving device drives the mounting ring to move along the axis, and the translation mechanism moves the fixed ring and the mounting ring out of the gap.

3. The ready-mixed concrete dust metering equipment according to claim 2, characterized in that: The driving device includes a driving block located on one side of the mounting ring. The driving block slides radially along the dust suction pipe. A driving mechanism is connected to the driving block. A first wedge-shaped surface is provided on the driving block. A second wedge-shaped surface corresponding to the first wedge-shaped surface is provided on the outer circular surface of the mounting ring near the driving block. A T-shaped locking block is provided on the second wedge-shaped surface. A T-shaped locking groove is provided on the first wedge-shaped surface.

4. The ready-mixed concrete dust metering equipment according to claim 3, characterized in that: The translation mechanism includes a translation guide rail and a translation bracket. The drive block is slidably connected to the translation bracket, the translation bracket is slidably connected to the translation guide rail, and the fixing ring is connected to the translation bracket.

5. The ready-mixed concrete dust metering equipment according to claim 1, characterized in that: The weighing device includes a weighing instrument and a support frame. The weighing instrument is elliptical to the support frame, and a driver is connected to the weighing instrument.

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