Mineral powder tail gas negative pressure collecting and separating device

Abstract

The utility model discloses a mineral powder tail gas negative pressure collecting and separating device which comprises a negative pressure pipe, a first collecting box and a fan, one end of the first collecting box is connected with the negative pressure pipe, and the other end of the first collecting box is connected with the fan. A first screen is arranged between the first collecting box and the negative pressure pipe, and the mesh number of the first screen is 45-60; an atomizer is arranged above the first collecting box; a guide part is arranged in the negative pressure pipe, the guide part is of a convex curved surface structure, and the guide part is arranged at the position close to the first screen; according to the utility model, the first screen is arranged at the joint of the first collecting box and the negative pressure pipe, meanwhile, the convex guide part is arranged in front of the first screen and in the negative pressure pipe, the plane of the tail end of the guide part and the bottom of the first screen are located on the agreement horizontal line, and the guide part is thinned when cutting the volume of the negative pressure pipe; and meanwhile, the mineral powder tail gas can be guided to directly impact the first filter screen, so that the speed of the mineral powder tail gas impacting the first filter screen is higher, and the separation efficiency of the mineral powder tail gas is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of tail gas treatment of mineral powder, and particularly relates to a negative pressure collection and separation device for tail gas of mineral powder. Background Art

[0002] After the metal mineral powder or some non-metal mineral powders are processed, their tail gases usually go through the spray treatment in a spray tower. However, in some special mineral powder smelting processes, there are still a large amount of metal dust or raw material dust particles in the tail gas after smelting of the mineral powder that can be recycled. Therefore, using a spray tower will cause the metal dust or raw material dust in the tail gas to be completely mixed with impurities, making it difficult to continue refining and processing, resulting in a large waste of raw materials and thus increasing the processing cost. Content of the Utility Model

[0003] The purpose of the utility model is to provide a negative pressure collection and separation device for tail gas of mineral powder, which can quickly separate the raw material powder and large particle impurities in the tail gas of mineral powder through the cooperation of a first collection box and a second collection box.

[0004] The utility model is realized by the following technical solutions:

[0005] A negative pressure collection and separation device for tail gas of mineral powder includes a negative pressure pipe, a first collection box and a fan. One end of the first collection box is connected to the negative pressure pipe, and the other end is connected to the fan; a first screen is arranged between the first collection box and the negative pressure pipe, and the mesh number of the first screen is 45 mesh - 60 mesh; an atomizer is arranged above the first collection box; a guiding part is arranged in the negative pressure pipe, and the guiding part is a convex curved surface structure, and the guiding part is arranged at a position close to the first screen.

[0006] Further, the first screen is arranged above the negative pressure pipe and is in a semi-circular structure, and the height of the first screen is less than the diameter of the negative pressure pipe.

[0007] Further, the tail surface of the guiding part is on the same horizontal plane as the bottom of the first screen.

[0008] Further, at least one spray nozzle is arranged above the first screen, and the spray nozzle is used for spraying the first screen

[0009] Further, a second collection box is arranged below the guiding part, a second screen is arranged on the second collection box, and the mesh number of the second screen is 20 mesh - 30 mesh.

[0010] Further, a water inlet valve and a drain valve are arranged on the side surface of the second collection box.

[0011] Further, a filter cotton is arranged between the first collection box and the fan.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0013] 1) In the utility model, a first screen is arranged at the connection between the first collection box and the negative pressure pipe. At the same time, in front of the first screen, a convex guiding part is arranged inside the negative pressure pipe. The plane at the end of the guiding part is on the same horizontal line as the bottom of the first screen. The guiding part cuts the volume of the negative pressure pipe to make it thinner, and at the same time, it can also guide the ore powder tail gas to directly impact the first filter screen, so that the speed of the ore powder tail gas hitting the first screen is faster, and the separation efficiency of the ore powder tail gas is higher.

[0014] 2) In the utility model, a second collection box is arranged below the guiding part of the negative pressure pipe. The opening of the second collection box is below the first screen. The sewage flushed by the spray nozzle on the first screen can directly flow into the second collection box for sedimentation and discharge. The equipment has a simple structure, good separation effect on the ore powder tail gas, and is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic cross-sectional structure diagram of the ore powder tail gas negative pressure collection and separation device of the present utility model.

[0017] Figure 2 It is a schematic internal structure diagram of the negative pressure pipe in the ore powder tail gas negative pressure collection and separation device of the present utility model.

[0018] Wherein: 1 - negative pressure pipe, 11 - guiding part, 2 - first collection box, 3 - fan, 31 - filter cotton, 4 - atomizer, 5 - first screen, 6 - spray nozzle, 7 - second collection box, 71 - water inlet valve, 72 - drain valve, 8 - second screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0020] Embodiment 1:

[0021] The main structure of this embodiment is an ore powder tail gas negative pressure collection and separation device, as shown in Figure 1 and Figure 2As shown in the figure, it includes a negative pressure pipe 1, a first collection box 2 and a fan 3. One end of the first collection box 2 is connected to the negative pressure pipe 1, and the other end is connected to the fan 3. A first screen 5 is arranged between the first collection box 2 and the negative pressure pipe 1, and the mesh number of the first screen 5 is 45 - 60 meshes. An atomizer 4 is arranged above the first collection box 2. A guiding part 11 is arranged in the negative pressure pipe 1, and the guiding part 11 is a convex curved surface structure and is arranged at a position close to the first screen 5. The first screen 5 is arranged close to the upper part of the negative pressure pipe 1, and the first screen 5 is a semi-circular structure, and the height of the first screen 5 is less than the diameter of the negative pressure pipe 1. The tail surface of the guiding part 11 is on the same horizontal plane as the bottom of the first screen 5. At least one spray nozzle 6 is arranged above the first screen 5, and the spray nozzle 6 is used for spraying the first screen 5. A filter cotton 31 is arranged between the first collection box 2 and the fan 3.

[0022] The end of the negative pressure pipe 1 is connected to the first collection box 2. A first screen 5 is arranged at the connection position between the end of the negative pressure pipe 1 and the first collection box 2, and the first screen 5 protrudes towards the negative pressure pipe 1 on the surface of the first collection box 2. The other end of the first collection box 2 is connected to a fan 3, and a filter cotton 31 is arranged at the connection position between the fan 3 and the first collection box 2. The filter cotton 31 is used to prevent dust particles from entering the fan 3. At the same time, an atomizer 4 is arranged above the first collection box 2. The atomizer 4 atomizes the recovered raw material particles in the first collection box 2 to make them into solid spherical deposits at the bottom of the first collection box 2. The first screen 5 is arranged at a position close to the upper part of the negative pressure pipe 1, and the first screen 5 is a hemispherical structure. Preferably, the mesh number of the first screen 5 is 45 - 60 meshes, which can filter out particle impurities above 0.2 - 0.3 mm. The fine raw material dust passing through the screen will be collected and solidified in the first collection box 2. A plurality of spray nozzles 6 are also arranged above the first screen 5, and the plurality of spray nozzles 6 are all connected to an external spraying device and are used for flushing the first screen 5 to prevent the first screen 5 from being blocked by impurities. A convex guiding part 11 is also arranged in the negative pressure pipe 1. The height of the guiding part 11 is equal to the radius length of the negative pressure pipe 1. The guiding part 11 is a gradually rising curved surface structure, and its end part is a flat surface structure. The surface of its end part is flush with the bottom of the first screen 5 and is arranged at an interval. After the fan 3 is started, the ore powder tail gas is lifted along the negative pressure pipe 1 through the guiding part 11 so that it can directly impact the first screen 5. The small ore powder raw materials enter the first collection box 2 after being filtered by the first screen 5 and are condensed by the water mist of the atomizer 4 and fall to the bottom of the first collection box 2. The larger impurities are intercepted outside the first screen 5 and flow into the lower second collection box 7 after being flushed by the spray nozzles 6.

[0023] Embodiment 2:

[0024] On the basis of the above embodiment, a second collection box 7 is further added in this embodiment. The second collection box 7 is arranged below the guiding part 11. A second screen 8 is arranged on the second collection box 7, and the mesh number of the second screen 8 is 20 mesh - 30 mesh. A water inlet valve 71 and a drain valve 72 are arranged on the side of the second collection box 7.

[0025] Preferably, a second collection box 7 is arranged below the first screen 5 and the guiding part 11. The second collection box 7 opens between the guiding part 11 and the side wall of the first collection box 2. A second screen 8 is arranged on the second collection box 7. The mesh number of the second screen 8 is preferably 20 mesh - 30 mesh, which can make the larger particles on the first screen 5 be washed into the second collection box 7 by the spray nozzles 6. At the same time, a water inlet valve 71 and a drain valve 72 are arranged at the bottom of the second collection box 7. When starting to treat the tail gas, the water inlet valve 71 is opened to make there be a certain amount of accumulated water in the second collection box 7. The larger particle impurities will be mixed with the water and deposited at the bottom of the water. Finally, the sewage can be discharged through the drain valve 72. Other parts of this embodiment are the same as those of the above embodiment and will not be described in detail here.

[0026] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0027] In addition, if terms such as "horizontal" and "vertical" appear in the description of the present utility model, it does not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0028] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, if the terms "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] The above are only the preferred embodiments of the present utility model, and do not impose any formal limitations on the present utility model. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model all fall within the protection scope of the present utility model.

Claims

1. A negative pressure collection and separation device for mineral powder tail gas, characterized in that: It includes a negative pressure pipe, a first collecting box and a fan, one end of the first collecting box is connected to the negative pressure pipe, and the other end is connected to the fan; a first screen is arranged between the first collecting box and the negative pressure pipe, and the mesh number of the first screen is 45-60 mesh; an atomizer is arranged above the first collecting box; a guide part is arranged in the negative pressure pipe, the guide part is a convex curved surface structure, and the guide part is arranged at a position close to the first screen.

2. The negative pressure collection and separation device for mineral powder tail gas according to claim 1, characterized in that: The first screen is arranged near the top of the negative pressure tube, the first screen is a semicircular structure, and the height of the first screen is smaller than the diameter of the negative pressure tube.

3. The negative pressure collection and separation device for mineral powder tail gas according to claim 2, characterized in that: The tail surface of the guide portion is in the same horizontal plane as the bottom of the first screen.

4. The negative pressure collection and separation device for mineral powder tail gas according to claim 1, characterized in that: At least one spray nozzle is arranged above the first screen, and the spray nozzle is used for spraying the first screen.

5. The negative pressure collection and separation device for mineral powder tail gas according to claim 1, characterized in that: A second collecting box is arranged below the guide portion, and a second screen is arranged on the second collecting box. The mesh number of the second screen is 20-30 meshes.

6. The negative pressure collection and separation device for mineral powder tail gas according to claim 5, characterized in that: A water inlet valve and a water discharge valve are arranged on the side of the second collecting box.

7. The negative pressure collection and separation device for mineral powder tail gas according to claim 1, characterized in that: Filter cotton is arranged between the first collecting box and the fan.

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