Blowing nozzle of sorting machine

Abstract

A base is provided with an air inlet pipe, an air outlet pipe and a transition hole, the air inlet pipe and the air outlet pipe are detachably connected, the transition hole enables the air inlet pipe and the air outlet pipe to be communicated concentrically, and the diameter of the middle section of the transition hole is larger than the diameter of a pipe cavity of the air outlet pipe. According to the scheme, after air flow enters the air outlet pipe from the transition hole, a higher flow speed is obtained, and huge thrust can be generated on materials, so that materials such as selected and large-specification ores and building aggregates are sorted; and the air inlet pipe and the air outlet pipe are detachably connected, so that the application scene is flexible and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sorting machines, in particular to a blowing nozzle of a sorting machine. Background Art

[0002] The sorting machine is a device that performs grading and screening based on the different weight and other characteristics of the products. The sorting machine is equipped with a nozzle, which can selectively blow the material transmitted to the vicinity of the nozzle according to the identification result of the material by the identification unit, so as to achieve the sorting of materials of different types or qualities. However, when the sorting machine is sorting small and large-sized ores, building aggregates and other materials, the conventional sorting machine nozzle may not be able to blow the material to the specified position, or even be unable to blow the heavy-weight materials, resulting in poor material sorting effect. Therefore, such large-sized and heavy-weight materials require the design of a special high-flow rate sorting machine nozzle.

[0003] The patent entitled "An array nozzle device for enhancing airflow for a sorting machine" (CN204365496U) discloses a technical solution, which includes a multi-layer nozzle body and multiple nozzles arranged in a staggered manner. The nozzle cross-section is trapezoidal or triangular, and the aperture of the jet hole is smaller than the aperture of the air inlet hole. The above solution can enhance the flow rate of the nozzle airflow, but the jet holes and air inlet holes with different apertures are all concentrated in the nozzle, and the materials of different specifications can only be adapted by adjusting the number of nozzle functions, which lacks flexibility and convenience.

[0004] The patent entitled "A Grain Sorting Device" (CN206139505U) discloses a technical solution in which a hopper and a Laval nozzle are arranged on the accelerating tube, and the hopper is located in front of the Laval nozzle. The above solution can obtain high-speed airflow through the Laval nozzle, but the positions of the hopper, Laval nozzle and accelerating tube are relatively fixed. When it is necessary to sort a variety of different materials such as ore and building aggregates, there is a lack of suitable material arrangement space, and the Laval nozzle is not convenient to disassemble and assemble. Utility Model Content

[0005] The utility model aims to provide a blow nozzle for a sorting machine, which can meet the requirements of high air flow velocity and flexible arrangement for sorting large-sized materials through the structural design of the blow nozzle assembly.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a sorting machine blowing nozzle, a base is provided with a detachably connected air inlet pipe and an air outlet pipe, a transition hole is provided between the air inlet pipe and the air outlet pipe, the air inlet pipe, the air outlet pipe and the transition hole are arranged in the same core and connected, and the middle section aperture of the transition hole is larger than the tube diameter of the air outlet pipe cavity.

[0007] The utility model mainly designs the middle section aperture of the transition hole to be larger than the diameter of the air outlet pipe cavity, so that the airflow obtains a greater flow rate after entering the air outlet pipe from the transition hole, and generates a huge thrust on the material after being ejected from the air outlet pipe, which is used to sort medium and large-sized ores, building aggregates and other materials; and the detachably connected air inlet pipe and air outlet pipe can be replaced with different pipe diameter specifications according to different types of materials, and the application scenarios are flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 An isometric view of the sorting machine mouthpiece;

[0009] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0010] Figure 3 For the inlet and outlet pipes Figure 1 Sectional view at AA in the middle;

[0011] Figure 4 For the transition hole Figure 1 Sectional view at AA in the middle;

[0012] Figure 5 Isometric view of the intake and exhaust pipes. DETAILED DESCRIPTION

[0013] See also Figure 1-5 The blow nozzle of the sorting machine shown in the figure has a base 1 provided with a detachably connected air inlet pipe 30 and an air outlet pipe 20, a transition hole 10 is provided between the air inlet pipe 30 and the air outlet pipe 20, the air inlet pipe 30 and the air outlet pipe 20 are coaxially connected and arranged with the transition hole 10, and the middle section aperture of the transition hole 10 is larger than the tube diameter of the air outlet pipe 20.

[0014] In the above scheme, when the high-pressure airflow enters from the air inlet pipe 30, passes through the transition hole 10 and then ejects from the air outlet pipe 20, since the aperture of the middle section of the transition hole 10 is larger than the diameter of the tube cavity of the air outlet pipe 20, the gas will be compressed after entering the tube cavity of the air outlet pipe 20, thereby increasing the gas flow rate, and after ejection, it will generate a greater thrust on the material, so as to sort medium and large-sized ores, building aggregates and other materials. In addition, since the air inlet pipe 30 and the air outlet pipe 20 are detachable on the base 1, the air inlet pipe 30 or the air outlet pipe 20 of different diameters can be replaced according to the materials of different specifications, so that the materials can be sorted more accurately and the use is more flexible.

[0015] In order to conveniently and reliably connect the air inlet pipe 30 and the air outlet pipe 20, the base 1 is provided with an air inlet pipe connection threaded hole 12 and an air outlet pipe connection threaded hole 13, which are respectively threadedly connected to the inner sections of the air inlet pipe 30 and the air outlet pipe 20. In the above scheme, a hexagonal bolt hole 301 is provided in the tube cavity of the air inlet pipe 30, and a hexagonal bolt head 201 is provided on the outer tube wall of the air outlet pipe 20. The hexagonal bolt hole 301 and the hexagonal bolt head 201 can facilitate the air inlet pipe 30 and the air outlet pipe 20 to be tightened on the base 1 respectively.

[0016] like Figure 2 As shown, the downstream end of the transition hole 10 is a trumpet hole with an expanded hole shape, and the upstream end of the air outlet pipe 20 is a trumpet hole connected with the aperture of the transition hole 10. In this scheme, the downstream end of the transition hole 10 is designed as a trumpet hole to increase the aperture, so that the acceleration of the airflow by the middle section of the transition hole 10 can be maintained, and the installation of the upstream end section of the air outlet pipe 20 is convenient; the upstream end of the air outlet pipe 20 is designed as a trumpet hole, and the compression density of the airflow reaches the maximum when it enters the narrow throat with the smallest aperture of the trumpet mouth. This design further compresses the gas in the pipe and increases the airflow speed.

[0017] Similarly, in order to facilitate the installation of the downstream end section of the intake pipe 30, the upstream end of the transition hole 10 is an expanded trumpet hole, and the middle section of the transition hole 10 is a straight hole of equal diameter.

[0018] In order to simplify the difficulty of manufacturing and processing and maintain the jet flow rate of the air outlet pipe, the lumen of the middle and downstream sections of the air outlet pipe 20 is a lumen of equal diameter.

[0019] As another preferred solution, the diameter of the tube cavity of the outlet pipe 20 gradually expands from the midstream section to the downstream section. In this solution, when the high-pressure airflow enters from the air inlet pipe 30 until it reaches the middle section of the tube cavity of the outlet pipe 20, the airflow movement follows the principle that "when the fluid moves in the tube, the flow velocity is large at the small cross-section and the flow velocity is small at the large cross-section". Since the aperture of the tube cavity gradually decreases as a whole during this process, the airflow is also compressed and accelerated; when the airflow passes through the narrow throat with the smallest aperture of the bell mouth at the upstream end of the outlet pipe 20, the flow velocity has exceeded the speed of sound, and the diameter of the tube cavity of the outlet pipe 20 gradually expands from the midstream section to the downstream section, but the transonic airflow no longer follows the previous principle when it moves to the downstream end of the outlet pipe 20, but on the contrary, the larger the cross-section, the faster the flow velocity. Here, the principle of the Laval nozzle is used, which further strengthens the speed of the airflow ejected from the outlet pipe 20, and generates a stronger thrust, which is sufficient to quickly sort out materials such as ores and building aggregates with large mass.

[0020] Preferably, the transition holes 10 are arranged in an array on the base 1 in two rows, upper and lower, and the number of the transition holes 10 is 100 to 150.

Claims

1. A nozzle for a sorting machine, characterized in that: An air inlet pipe (30) and an air outlet pipe (20) are provided on the base (1) and are detachably connected. A transition hole (10) is provided between the air inlet pipe (30) and the air outlet pipe (20). The air inlet pipe (30), the air outlet pipe (20) and the transition hole (10) are coaxially connected and arranged. The diameter of the middle section of the transition hole (10) is larger than the diameter of the tube cavity of the air outlet pipe (20).

2. The nozzle of the separator according to claim 1, characterized in that: The base (1) is provided with an air inlet pipe connection threaded hole (12) and an air outlet pipe connection threaded hole (13) which are respectively threadedly connected to the inner sections of the air inlet pipe (30) and the air outlet pipe (20).

3. The nozzle of the sorting machine according to claim 1, characterized in that: The downstream end of the transition hole (10) is a trumpet hole in the shape of an expanded hole, and the upstream end of the air outlet pipe (20) is a trumpet hole connected to the opening of the transition hole (10).

4. The nozzle of the separator according to claim 3, characterized in that: The upstream end of the transition hole (10) is an expanded trumpet hole, and the middle section of the transition hole (10) is a straight hole of equal diameter.

5. The nozzle of the separator according to claim 4, characterized in that: The lumen of the middle and downstream sections of the air outlet pipe (20) is a lumen of equal diameter.

6. The nozzle of the separator according to claim 1, 3 or 4, characterized in that: The diameter of the lumen of the air outlet pipe (20) gradually increases from the midstream pipe section to the downstream pipe section.

7. The nozzle of the sorting machine according to claim 1, characterized in that: The transition holes (10) are arranged in an array on the base (1) in two rows, upper and lower, and the number of the transition holes (10) is 100 to 150.

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