CN201271556Y - Filter screen type sand-dust separator - Google Patents

Abstract

A filter screen type dust separator is used for separating dust in a sand blasting box of sand blasting equipment and comprises an outer box body, an exhaust pipe, a wind distributing pipe and a separation filter screen; the outer box is communicated with an opening at the top of the sand blasting box through an opening at the bottom of the outer box in a sealing way; the exhaust pipe is communicated with the opening at the top of the outer box body in a sealing manner and generates negative pressure airflow in the outer box body through air exhaust; the air distributing pipe is arranged in the outer box body and is combined with the outer box body, and an air channel with negative pressure airflow gradually weakened from the bottom to the top of the outer box body is formed in the outer box body; the separation filter screen is arranged in the outer box body and surrounds an opening which is formed in the top of the outer box body and communicated with the exhaust pipe; when the negative pressure air flow is in work, sand and dust in the sand-blasting box are brought into the air channel by the negative pressure air flow, after the sand and dust are filtered by the separation filter screen, the dust is discharged by the exhaust pipe, and sand grains fall back into the sand-blasting box again. The utility model discloses divide the sand effect stable, the granularity of discharge dust is steerable, and sand consumption greatly reduced, efficiency promotes greatly, and the preparation is more simple and convenient, and the materials are more economized.

Description

Filter type sand and dust separator

technical field

The utility model relates to a sand dust separator of sandblasting equipment, in particular to a filter screen type sand dust separator.

Background technique

The sandblasting machine is a kind of grinding sand material driven by compressed air, which is sprayed onto the surface of the workpiece at high speed to change the mechanical properties of the workpiece surface. Cleanliness and different roughness to improve the mechanical properties of the workpiece surface. The sand-dust separator is an important part of the sandblasting equipment. Its function is to separate the dust generated during the work of the sandblasting machine from the available sand in a timely and continuous manner. Most of the existing sandblasting machines use cyclone separators to separate sand and dust under the action of centrifugal force, but the use of cyclone separators for sand separation has the following disadvantages: 1. The effect of sand separation is poor and unstable, and the mesh number of separated dust is difficult to control; 2. .The friction between the cyclone separator itself and the sand particles increases the sand consumption; 3. The manufacturing process of the cyclone separator is complicated, and the material cost is high.

Utility model content

The purpose of this utility model is to provide a filter screen type sand and dust separator, which overcomes the disadvantages of poor sand separation effect, instability, increased sand consumption and complicated process of the above-mentioned existing cyclone separator.

In order to achieve the above purpose, the utility model provides a filter-type sand and dust separator, which is used to separate the dust in the sandblasting box of the sandblasting equipment, which includes an outer box, an exhaust pipe, an air distribution pipe and a separation filter ; The outer box is sealed and communicated with the opening at the top of the sandblasting box through the opening at the bottom; Generate a negative pressure air flow; the air distribution pipe is installed in the outer box, which is combined with the outer box to form an air duct in which the negative pressure air flow gradually weakens from the bottom to the top of the outer box; the separation filter The net is installed in the outer box, which surrounds the opening of the top of the outer box and communicates with the air duct; when working, the negative pressure airflow will bring the sand and dust in the sandblasting box into the air duct, and the sand After the dust is filtered by the separation filter, the dust is discharged by the exhaust pipe, and the sand falls back into the sandblasting box.

Wherein, the air distribution pipe is a tapered pipe extending from the top of the outer box to the bottom of the outer box, and the cross-sectional area of the tapered pipe gradually decreases from the top of the outer box downwards. The pipe wall of the tapered pipe is densely covered with through holes.

Wherein, the tapered pipe is a conical pipe or a polyhedral tapered pipe.

Wherein, the separation filter is a cage-shaped filter extending from the top of the outer box to the bottom of the outer box, and the top of the cage-shaped filter is closely connected to the top of the outer box And surround the opening where the top of the outer box communicates with the exhaust duct.

Wherein, the bottom of the separation screen is also tightly connected to the opening of a funnel, and the mouth of the funnel extends into the sandblasting box.

Wherein, the separation screen surrounds the tapered pipe.

Wherein, it also includes a separator frame, the separator frame includes a top plate and a number of supporting feet extending downward from the top plate, the top plate is sealed and fixed on the top of the outer box as the top cover of the outer box, The top plate has an opening as an opening on the top of the outer box for connecting the exhaust pipe, the air distribution pipe is fixed on the top plate, and the separation filter is fixed on the supporting feet.

In summary, the utility model solves the problem that the available sand is continuously sucked away by the wind during the sandblasting work of the traditional separator for many years. It is greatly reduced, the efficiency is greatly improved, and the production is easier and the material is saved.

For further elaborating the technical means and effects that the utility model takes to achieve the intended purpose, please refer to the following detailed description and accompanying drawings of the utility model. It is believed that the purpose, features and characteristics of the utility model should be able to be obtained in-depth and For specific understanding, however, the accompanying drawings are only for reference and description, and are not intended to limit the present utility model.

Description of drawings

The technical solution and other beneficial effects of the utility model will be apparent through the detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings.

In the attached picture,

Fig. 1 is the three-dimensional exploded schematic diagram of a preferred embodiment of the filter screen type dust separator of the present invention;

Fig. 2 is a schematic diagram of the working principle of the filter screen type sand dust separator of the present invention.

Detailed ways

As shown in Figure 1, it is a three-dimensional exploded schematic diagram of a preferred embodiment of the filter screen type dust separator of the present invention. The air pipe 2, the orifice air distribution cone pipe 3, the separation filter 4, the secondary ash hopper 5 and the separator frame 6 are composed; the outer box 1 is a cube with upper and lower openings; the exhaust pipe 2 is a round pipe; The orifice plate air-distributing cone pipe 3 is a cone pipe in the shape of a four-sided cone, and the four cone surfaces of the cone pipe are plates densely covered with ventilation holes; the separation filter screen 4 is a square barrel-shaped filter screen surrounded by four square filter screens; The secondary ash hopper 5 is a four-sided cone-shaped funnel; the separator frame 6 includes a square top plate and four slender support feet extending downward from the top plate, and the top plate of the separator frame 6 also has a circular opening.

As shown in Figure 2, it is a schematic diagram of the working principle of the filter screen type sand dust separator of the present invention. The outer box 1 is installed vertically on the top of the sandblasting box 7 of the sandblasting equipment, and the opening at the bottom of the outer box 1 is sealed and connected with the opening reserved on the top of the sandblasting box 7; the opening at the top of the outer box 1 is connected to the separator skeleton The top plate of 6 is sealed and fixed, and the circular opening of the top plate of the separator skeleton 6 is sealed and connected with the air exhaust pipe 2, and the air exhaust pipe 2 can be connected to an external air exhaust equipment, such as an exhaust fan etc. (not shown). Inside the outer box 1, the cone bottom of the orifice air distribution cone pipe 3 is fixed on the top plate of the separator skeleton 6 and surrounds the circular opening of the top plate, and its cross section gradually decreases from top to bottom; the separation filter screen 4 surrounds The orifice air-distributing cone pipe 3 forms a circle and is fixed on the four supporting legs of the separator frame 6. The opening on the top of the separation filter screen 4 is closely connected with the top plate of the separator frame 6; the opening of the secondary ash hopper 5 is It is tightly fixed with the opening at the bottom of the separation filter screen 4, and its mouth extends downwards into the sand dust 8 in the sandblasting box 7; Road 9, because the orifice air distribution cone 3 is conical and the ventilation holes are densely distributed on the cone surface, the negative pressure airflow is gradually weakened from the bottom to the top of the outer box 1 in the separator air channel 9.

The filter screen type dust separator begins to work with the start of the draft. When the sandblasting equipment is working, the coarse sand (new sand) and fine sand (dust) inside the sandblasting box 7 are mixed and moved to the top with the negative pressure air flow of the draft. Entering the inside of the air duct 9 of the separator, the flow direction of the negative pressure airflow is as shown by the arrow in Figure 2. After entering the inside of the air duct 9 of the separator, the negative pressure airflow decreases sharply, and the moving speed of sand and dust decreases sharply. Most of the sand particles due to their own gravity The adsorption force greater than the suction negative pressure falls back into the sandblasting box 7 again, and only a small number of sand grains (dust) begin to pass through the separation filter screen 4 with the air flow under the weak negative pressure adsorption force. In this way, the dust particle size separated by the separation filter screen 4 can meet the particle size requirements of the dust to be discharged, and all sand particles passing through the separation filter screen 4 will not block the separation filter screen 4 within the design wind speed, and the surface of the separation filter screen 4 The dust accumulated to a certain weight will automatically fall back into the sandblasting box 7, and a small part of the dust that cannot be discharged through the exhaust pipe 2 will return to the sandblasting box 7 through the secondary ash hopper 5 without causing pollution. . In addition, by controlling the mesh size of the separation filter 4, the particle size of the filtered dust can be conveniently controlled.

The utility model uses the filter screen as the separation medium, and utilizes the negative pressure suction of the air to directly separate and filter the dust in the sand-dust mixture. The particle size of the separated dust can be controlled at will according to the processing requirements of the parts. Do a variety of transformations, such as replacing the orifice air distribution cone with other cones with densely distributed ventilation holes, or eliminating the separator skeleton. By adopting the design of the utility model, it solves the problem that the available sand is constantly sucked away by the wind during the sandblasting work of the traditional separator for many years, so that the sand consumption of the sandblasting equipment is greatly reduced, the efficiency is greatly improved, and the production is easier. Use less materials.

As mentioned above, for those of ordinary skill in the art, various other corresponding changes and deformations can be made according to the technical scheme and technical concept of the present utility model, and all these changes and deformations should belong to the appendix of the utility model. The scope of the claims.

Claims (7)

1, a kind of filter screen molding sand dirt separator is used to separate the dust in the blasting cabinet of abrasive blast equipment, it is characterized in that it comprises outer case, exhaust column, branch airduct and separates filter screen; Described outer case is communicated with the opening at described blasting cabinet top by the opening sealing of its bottom; Described exhaust column sealing is communicated with the opening at described outer case top, and this exhaust column produces negative-pressure air-flow by exhausting in described outer case; Airduct was installed in this outer case in described minute, and it forms the air channel that negative-pressure air-flow is died down to the top gradually by the outer case bottom in conjunction with described outer case in outer case; Described separation filter screen is installed in the described outer case, and it surrounds the opening that described outer case top is communicated with described exhaust column; During work, negative-pressure air-flow is brought the sand dust in the blasting cabinet into described air channel, and described sand dust is after separating strainer filtering, and dust is drained by exhaust column, and sand grains falls back in the blasting cabinet again.

2, filter screen molding sand dirt separator as claimed in claim 1, it is characterized in that, airduct was the conical pipe that extends to the bottom of described outer case from the top of described outer case in described minute, and the cross-sectional area of this conical pipe is diminished downwards gradually by the outer case top, and through hole gathers on the tube wall of this conical pipe.

3, filter screen molding sand dirt separator as claimed in claim 2 is characterized in that, described conical pipe is conical tube or polyhedron Taper Pipe.

4, filter screen molding sand dirt separator as claimed in claim 1, it is characterized in that, described separation filter screen is the inclosure shape filter screen that extends to the bottom of described outer case from the top of described outer case, and the top fluid-tight engagement of this inclosure shape filter screen is in the top of described outer case and surround the opening that described outer case top is communicated with described exhaust column.

5, filter screen molding sand dirt separator as claimed in claim 1 is characterized in that the bottom of described separation filter screen also closely connects the opening of a funnel, and the mouth of this funnel then stretches in the blasting cabinet.

6, filter screen molding sand dirt separator as claimed in claim 2 is characterized in that described separation filter screen surrounds described conical pipe.

7, as the arbitrary described filter screen molding sand dirt separator of claim 1 to 6, it is characterized in that, it also comprises a separator skeleton, this separator skeleton comprises top board and the some feets that extended by top board downwards, described top board is fixed in the top of described outer case as the top seal of described outer case, and this top board has the opening of an opening as described outer case top, in order to connect described exhaust column, airduct was fixed on the described top board in described minute, and described separation filter screen is fixed on the described feet.

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