Ton bag unloading closed dust suppression device
By using flexible ductwork and rectangular air ducts to form an air curtain in the ton bag unloading device, combined with grouped spring supports, the problem of dust overflow during the ton bag unloading process is solved, achieving dust control and environmental improvement.
Patent Information
- Application Number
- CN202520260501.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Dust is easily dispersed during the unloading process of ton bags. The lack of airtight sealing leads to excessive dust concentration inside the plant, affecting the working environment of the operators. The existing equipment is large in structure, not airtight, and unsuitable for narrow spaces.
A flexible duct and rectangular air duct are installed at the lower part of the material hopper discharge port to form two low-pressure air curtains. Combined with the grouped spring support ton bag, the drop height difference is ensured to be low. The manual gate valve is controlled, and the positive pressure fan is used to form an air curtain to isolate the airflow.
It effectively controls dust spillage, reduces dust concentration in the factory, improves the working environment, and is simple, reliable, and has low operating costs, meeting environmental protection requirements.
Smart Images
Figure CN223721212U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to ton bag unloading dust prevention technical field, concretely relates to a ton bag unloading closed dust suppression device. BACKGROUND
[0002] Many materials in the production and operation of industrial enterprises are ton bag packaging, but how to deal with the dust in the ton bag unloading process has become a very headache problem for ton bag unloading post. The working principle of ton bag unloading is to install ton bag in the lower part of the discharge port of the stock bin, and to control the opening and closing of the discharge port to unload to the ton bag. There is a large material falling height difference in ton bag unloading, and secondary dust raising is easy to occur in the unloading process. At the same time, due to the poor sealing, the ground is easy to gather and scatter the material, causing the unorganized dust concentration in the plant to be seriously over-standard, and the working environment of the operators is deteriorated.
[0003] At present, the more mature ton bag unloading form is to hang the ton bag to the upper side of the discharge port of the stock bin through the electric hoist, close the ton bag inlet and outlet door, form a closed space, and then unload after the dust removal equipment is matched and works, forming a micro-negative pressure environment to control the dust overflow. This unloading equipment has the defects of large structure size, poor sealing, large labor intensity of workers and influence on operation, and the matched dust removal equipment is often large in structure size, not suitable for narrow land and compact structure places. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at the above problems existing in the prior art, and provides a ton bag unloading closed dust suppression device.
[0005] In order to realize the above purpose of the utility model, a ton bag unloading closed dust suppression device adopts the following technical scheme:
[0006] The utility model discloses a ton bag unloading closed dust suppression device, including the ton bag of installation in the lower part of the stock bin, the ton bag is supported and is placed on the pattern support plate, the lower part of the discharge port of the stock bin is installed with the flexible cloth and is extended to the ton bag, sets up the manual gate valve on the discharge port of the stock bin, and the opening and closing of the manual gate valve can reduce the scattering of the material when replacing the ton bag;Rectangular air pipe is arranged on the periphery of the discharge port of the stock bin, and the rectangular air pipe is connected with the positive pressure fan, and the air curtain outlet on the rectangular air pipe can cover the air outlet of the upper inlet of the ton bag.
[0007] Preferably, the lower part of the pattern support plate is installed with a group spring, and the lower part of the group spring is installed and fixed on the slow-setting bottom plate. The group spring in the lower part of the ton bag of the ton bag unloading closed dust suppression device ensures that the material falling height difference always remains at a low level.
[0008] Preferably, the "slit" type dust suction port is installed below 500mm-600mm of the top of the conical chute, and has a circumferential opening around, the slit width is 200-250mm, and is connected to the external dust removal equipment through the rectangular air pipe.
[0009] Preferably, two rectangular air pipes are arranged around the discharge port of the silo to form two low-pressure air curtains to isolate the internal and external airflow, and a positive pressure fan is used to supply air with a pressure of 80 Pa to 120 Pa, and the air outlet structure is a strip type, and the induced airflow velocity on the lower side of the ton bag is greater than the escape velocity of the dust, and the value is 0.6 m / s to 1.0 m / s. The air curtains formed by the two compressed airs isolate the internal and external airflow, and further reduce the dust overflow.
[0010] Preferably, a flexible chute is installed at the lower part of the discharge port of the silo, the outer extension length of the flexible chute is 0.8 m to 1.2 m, a circle of 50 mm to 80 mm wide hard plastic plate is wrapped outside every 0.3 m to 0.5 m on the flexible chute to enhance the strength and stability of the flexible chute, the spring group is made of the same specification, the same type and the same size of the spiral spring, and the elastic coefficient value is determined according to the weight of the ton bag and the height of the discharge port of the silo, and the value range is 15 kN / m to 30 kN / m.
[0011] The ton bag unloading closed dust suppression device has the following beneficial effects:
[0012] (1) The spring group at the lower part of the ton bag ensures that the material falling height difference is always kept at a low level, and the air curtains formed by the two compressed airs isolate the internal and external airflow, and further reduce the dust overflow.
[0013] (2) The manual gate valve is arranged on the discharge port of the silo, and the opening and closing of the manual gate valve can reduce the scattering of bulk materials when the ton bag is replaced.
[0014] (3) The related technical parameters of the utility model are reasonable and reliable, can effectively control the dust overflow in the unloading process, the effect is remarkable, reduces the unorganized emission dust concentration in the factory building, and improves the working environment of the operator
[0015] (4) Industrial test verification shows that the utility model equipment structure is simple, operation is reliable, operation and maintenance are convenient, equipment failure rate is low, equipment service life is long, technical economy is good, operation cost is low, meets the requirements of national environmental protection policy, reduces material waste, and reduces production cost. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is an external structure diagram of a ton bag unloading closed dust suppression device.
[0017] Mark: 2-ton bag; 12-manual gate valve; 13-rectangular air pipe; 14-air outlet; 15-flexible chute; 16-pattern support plate; 17-grouped spring; 18-retarding concrete bottom plate; 19-silo. DETAILED DESCRIPTION
[0018] For better description of the utility model, the utility model is described in further detail below in combination with the drawings and examples. Obviously, the described examples are only a part of the examples of the utility model, rather than all the examples. Based on the examples in the utility model, all the other examples obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.
[0019] As shown in the external structure view of the ton bag unloading airtight dust suppression device of the utility model, Figure 1 As shown in the external structure view of the ton bag unloading airtight dust suppression device of the utility model, in the example, the utility model comprises a ton bag 2 installed at the lower part of a stock bin 19, the ton bag 2 is supported and placed on a pattern supporting plate 16, a flexible chute 15 is installed at the lower part of the discharge port of the stock bin 19 and extends into the ton bag 2, the extension length of the flexible chute 15 is 0.8m-1.2m, a 50mm-80mm wide hard plastic plate is wrapped around the outer side of the flexible chute 15 every 0.3m-0.5m. A manual gate valve 12 is arranged on the discharge port of the stock bin 19, which can reduce the scattering of bulk materials when replacing the ton bag. Two rectangular air pipes 13 are arranged around the discharge port of the stock bin 19, an air curtain outlet 14 is arranged on the rectangular air pipe 13, which can cover the air outlet on the upper part of the ton bag 2, the rectangular air pipe 13 is connected with a positive pressure fan, forming two low-pressure air curtains to isolate the internal and external airflow, the air supply pressure of the positive pressure fan is 80Pa-120Pa, the air outlet structure is a strip seam type, the air current speed on the lower side of the ton bag 2 is greater than the escape speed of the dust, the value is 0.6m / s-1.0m / s; a group spring 17 is installed at the lower part of the pattern supporting plate 16, and the lower part of the group spring 17 is installed and fixed on a slow-setting concrete bottom plate 18. The spring group 17 is made of the same specification, the same type and the same size of coil spring, and the elastic coefficient value is determined according to the weight of the ton bag 2 and the height of the discharge port of the stock bin 19, and the value range is 15kN / m-30kN / m.
[0020] In actual use, the ton bag 2 is sleeved under the ash discharge port, the manual gate valve 12 is fully opened to start unloading, as the weight of the ton bag 2 increases, the group spring 17 is gradually compressed, and the material falling height difference is always kept at a low level. The use of the flexible chute 15 on the discharge port can appropriately extend the material falling height difference, reduce the impact force, and the pattern supporting plate 16 is used to support and place the ton bag 2, and the concrete bottom plate 18 is used to fix and connect the group spring 17. The low-pressure air in the rectangular air pipe 13 is injected out through the strip seam type air outlet 14, forming two air curtains, which isolates the internal and external airflow, and further controls the overflow of fine dust. The spring group at the lower part of the ton bag of the ton bag unloading airtight dust suppression device designed by the utility model ensures that the material falling height difference is always kept at a low level, the air curtain formed by the two low-pressure airflows isolates the internal and external airflow, further reduces the dust overflow, and the manual gate valve can reduce the scattering of bulk materials when replacing the ton bag.
[0021] Industrial test verification shows that the ton bag unloading closed dust suppression device can effectively reduce the falling material height difference, avoid dust overflow, improve the surrounding operation environment, has the advantages of simple structure, convenient operation, remarkable effect, good technical economy, low operation cost and the like. Through the actual application in a magnetic material production factory in Ma'anshan City, Anhui, the process performance is reliable, the effect is remarkable, the operation is stable, and the technology is mature.
Claims
1. A ton bag unloading dust sealing device, characterized in that It includes the ton bag (2) installed in the lower part of the stock bin (19), the ton bag (2) supports and rests on the pattern support plate (16), the flexible chute (15) is installed at the lower part of the discharge port of the stock bin (19) and extends to the ton bag (2), the manual gate valve (12) is arranged on the discharge port of the stock bin (19); The rectangular air pipe (13) is arranged around the discharge port of the stock bin (19), the rectangular air pipe (13) is circumscribed by the positive pressure fan, and the air outlet (14) capable of covering the upper inlet of the ton bag (2) is arranged on the rectangular air pipe (13).
2. A dust containment device for a ton bag unloading system as claimed in claim 1, wherein: The group spring (17) is installed on the lower part of the pattern support plate (16), and the lower part of the group spring (17) is installed and fixed on the retarding concrete bottom plate (18).
3. A dust sealing device for a ton bag according to claim 1 or 2, characterized in that: Two rows of rectangular air pipes (13) are arranged around the discharge port of the stock bin (19) to form two rows of low-pressure air curtains to isolate the internal and external air flow, and the air outlet structure is a strip type.
4. A dust seal device for a ton bag unloading system as claimed in claim 3, wherein: The flexible chute (15) is installed at the lower part of the discharge port of the stock bin (19), the extension length of the flexible chute (15) is 0.8m-1.2m, a circle of 50mm-80mm wide hard plastic plate is wrapped on the outer side of the flexible chute (15) every 0.3m-0.5m; The spring group (17) is made of spiral springs of the same specification, the same type and the same size.