A blowing device of an air separator and an air separator

Abstract

The utility model relates to a kind of blowing device of winnowing machine and winnowing machine, and blowing device includes pressure gas source, air inlet control valve and blowing equipment;Pressure gas source is connected with blowing equipment by air inlet control valve;Blowing equipment includes body, accommodating cavity and multiple air jet holes;Body is columnar structure, can rotate, and rotating axis is parallel to driving axis and is installed between the mesh belt of upper and lower layer, accommodating cavity is located in body, and is connected with pressure gas source by air inlet control valve;Air jet hole one end is connected with accommodating cavity, the other end is located on the surface of body, and the air outlet of multiple air jet holes is uneven distribution, so that body can rotate when multiple air jet holes simultaneously exhaust, and blowing is carried out to the position of driving shaft and scraper contact.The utility model is based on the blowing of continuous variable angle of the position of driving shaft and scraper contact based on the rotation of body, improve blowing effect, and blowing is also carried out to the surface of driving roller, further reduce the accumulation of smoke dust.

Description

Technical Field

[0001] This utility model relates to the technical field of tobacco processing equipment, and in particular to a blowing device for an air separator and an air separator. Background Technology

[0002] Wind separation is a crucial process in tobacco drying and the entire tobacco production process. The quality of the material after wind separation directly affects the quality of the finished tobacco product and has the most direct impact on the brand.

[0003] The secondary air classifier is made of high-strength steel and is equipped with combing rollers, feeding rollers, air adjustment components, drive rollers, driven rollers, and a mesh belt. The lower end of the box has a debris outlet and contains an air adjustment plate to adjust the volume and ratio of the side air intake and bottom air. After air classification, the tobacco falls onto the mesh belt, which is then driven by the drive and driven rollers to output the tobacco. A scraper C is installed between the drive shaft A and the mesh belt B to ensure the cleanliness of the drive shaft. However, fine dust particles still accumulate between the drive shaft A and scraper C. Because the workshop requires maintaining certain temperature and humidity conditions, this not only causes dust to adhere to the drive shaft, increasing the transmission load, but also breeds tobacco insects, which is a major taboo in tobacco production and must be avoided. These problems urgently need to be solved. Utility Model Content

[0004] This utility model discloses a blowing device for an air classifier and an air classifier, aiming to solve the technical problems existing in the prior art.

[0005] The present invention adopts the following technical solution:

[0006] In a first aspect, this utility model provides a jetting device for an air classifier, the air classifier comprising a drive shaft, a driven shaft, a mesh belt, and a scraper; the mesh belt is wound around the drive shaft and the driven shaft, and the scraper is disposed between the upper and lower mesh belts for cleaning the surface of the drive shaft; the jetting device is used to jet clean the position where the drive shaft contacts the scraper; the jetting device comprises a pressure air source, an air inlet control valve, and a jetting device; the pressure air source is connected to the jetting device through the air inlet control valve; the jetting device comprises a body, a receiving cavity, and multiple jet nozzles; the body is a columnar structure, rotatable, and its rotation axis is installed between the upper and lower mesh belts parallel to the drive shaft axis; the receiving cavity is located within the body and is connected to the pressure air source through the air inlet control valve; one end of each jet nozzle is connected to the receiving cavity, and the other end is located on the surface of the body; the outlets of the multiple jet nozzles are non-uniformly distributed so that the body can rotate when the multiple jet nozzles exhaust air simultaneously, and jet clean the position where the drive shaft contacts the scraper.

[0007] In the blowing device of the air classifier of this utility model, the main body is a cylindrical structure; the multiple air outlets are spirally distributed around the axis of the blowing device, and the angle E between the outlets and the direction D is greater than 0°; the direction D is the direction when the outlets are perpendicular to the axis.

[0008] In the blowing device of the air classifier of this utility model, the included angle E is greater than or equal to 30° and less than or equal to 45°.

[0009] In the blowing device of the air classifier of this utility model, the included angle E is 35°.

[0010] In the blowing device of the air separator of this utility model, the center distance between adjacent air jet outlets is 0.75cm-2cm.

[0011] In the blowing device of the air separator of this utility model, the diameter of the air jet hole is greater than 0 mm and less than or equal to 5 mm.

[0012] In the blowing device of the air separator of this utility model, the diameter of the air jet hole is 1mm.

[0013] The blowing device of the air classifier of this utility model also includes a time relay; the time relay is connected to the air intake control valve and is used to control the opening and closing of the air intake control valve.

[0014] The blowing device of the air classifier of this utility model also includes a filter; the filter is connected in series in the connecting pipeline between the pressure gas source and the air inlet control valve, and is used to filter the gas output by the pressure gas source.

[0015] In a second aspect, the present invention also provides an air classifier, which includes any of the above-described spraying devices.

[0016] The technical solution adopted in this utility model can achieve the following beneficial effects:

[0017] This utility model mainly provides a spraying device for an air classifier. It is based on a pressurized gas source, which supplies pressurized gas. The gas supply is controlled by an air intake control valve. The gas is sprayed out through the jet nozzles on the spraying device. Based on the jetting through multiple jet nozzles, the main body rotates. At the same time, continuous spraying is performed on the contact position between the drive shaft and the scraper. The spraying at different angles improves the spraying effect. On the other hand, the surface of the drive roller is also sprayed during the rotation, thereby reducing the amount of dust from the scraper and further reducing the accumulation of dust. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below, forming part of this utility model. The illustrative embodiments of this utility model and their descriptions explain this utility model and do not constitute an improper limitation of this utility model. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the spraying device of an air classifier according to the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the jet blowing device of this utility model;

[0021] Figure 3 This is a schematic diagram of the main structure of the jetting device of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Pressurized air source; 2. Air intake control valve; 3. Pneumatic spraying device; 31. Body; 32. Receiving cavity; 33. Air jet hole; 34. Rotating shaft; 4. Time relay; 5. Filter; 6. Connecting pipe; 7. Sealing ring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. In the description of this utility model, it should be noted that the term "or" is generally used to include the meaning of "and / or," unless otherwise expressly stated otherwise.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a magnetic connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0026] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] To address the problems existing in the prior art, this application provides a blowing device for an air classifier, i.e., an air classifier.

[0028] like Figure 1 As shown, a jet cleaning device for an air classifier is disclosed. The air classifier includes a drive shaft, a driven shaft, a mesh belt, and a scraper. The mesh belt is wound around the drive shaft and the driven shaft, and the scraper is disposed between the upper and lower mesh belts for cleaning the surface of the drive shaft. The jet cleaning device is used to clean the contact area between the drive shaft and the scraper. The jet cleaning device includes a pressurized air source 1, an air inlet control valve 2, and a jet cleaning device 3. The pressurized air source 1 is connected to the jet cleaning device 3 through the air inlet control valve 2. The jet cleaning device 3 includes a body 31, a receiving cavity 32, and multiple jet nozzles 33. The body 31 is a columnar structure that can rotate, such as being rotatably connected to the air classifier support via a rotating shaft, and the axis of rotation is installed between the upper and lower mesh belts parallel to the drive shaft. The receiving cavity 3... 2 is located inside the body 31 and is connected to the pressure air source 1 through the air intake control valve 2; one end of the jet hole 33 is connected to the receiving cavity 32, and the other end is located on the surface of the body 31. The outlets of the multiple jet holes 33 are non-uniformly distributed, that is, the total torque on the body 31 is not zero, so as to overcome the rotational resistance, so that the body 31 can rotate when multiple jet holes 33 exhaust at the same time and spray towards the position where the drive shaft contacts the scraper. Specifically, the rotation speed can be adjusted by changing the pressure in the receiving cavity 32, and a lightweight material, such as plastic, can be selected to reduce the resistance during rotation; preferably, the rotation direction is clockwise, that is, the same jet hole 33 sprays from the bottom to the top of the drive shaft, so that the blown smoke and dust fall from the bottom.

[0029] This utility model discloses a spraying device for an air classifier. It is based on a pressurized gas source, which supplies pressurized gas. The gas supply is controlled by an air intake control valve. The gas is sprayed out through jet holes on the spraying device. Based on multiple jet holes, the main body rotates. While rotating, the contact point between the drive shaft and the scraper is continuously sprayed with gas at varying angles to improve the spraying effect. On the other hand, the surface of the drive roller is also sprayed during the rotation, thereby reducing the amount of dust emitted from the scraper and further reducing the accumulation of dust.

[0030] In some preferred embodiments, such as Figure 2 and 3As shown, the main body 31 has a cylindrical structure, such as a cylindrical shell; multiple air jet holes 33 are spirally distributed around the axis of the blowing device 3, and the angle E between the air jet holes and the direction D is greater than 0°; the direction D is the direction when the air jet holes are perpendicular to the axis; since the multiple air jet holes 33 are set in a spiral shape, the air is more evenly distributed in the rotation direction when blowing, and setting the outlet of the air jet holes 33 to be inclined is more conducive to realizing the rotation of the main body 31.

[0031] In some preferred embodiments, the included angle E is greater than or equal to 30° and less than or equal to 45°; within this range, the air source pressure required to achieve the rotation of the main body 31 is low, and the blowing on the position where the drive shaft contacts the scraper is cleaner when the air is discharged.

[0032] Preferably, the included angle E is 35°.

[0033] In some preferred embodiments, the center distance between adjacent air outlets of the jet holes 33 is 0.75cm-2cm. Specifically, the center distance between the air outlets of the jet holes 33 is the shortest distance between the centers of two adjacent air outlets of the jet holes 33 on the surface of the body 31. If the center distance is too large, it will not have a cleaning effect. If it is too small, the dust that is blown up will easily adhere to the mesh belt and drive shaft, increasing the operating load on the mesh belt and drive shaft.

[0034] In some preferred embodiments, the main body 31 may be 4.5cm in size and is formed by rolling a stainless steel sheet, such as a 0.5mm sheet or other sizes, depending on the requirements; the length is determined according to the length of the central axis, such as being the same length as the central axis, such as 40cm.

[0035] In some preferred embodiments, the diameter of the jet hole 33 is greater than 0 mm and less than or equal to 5 mm; if the hole diameter is too large, the air pressure required for the main body to rotate will be too large, making rotation difficult.

[0036] Preferably, the diameter of the jet hole 33 is 1 mm; this ensures that the rotation of the main body 31 and the contact position between the drive shaft and the scraper are both optimal. If the diameter is too small, the jet hole 33 will easily become blocked.

[0037] In some preferred embodiments, a time relay 4 is also included; the time relay 4 is connected to the intake control valve 2 and is used to control the opening and closing of the intake control valve 2.

[0038] In some preferred embodiments, a filter 5 is also included; the filter 5 is connected in series in the connecting pipeline between the pressure gas source 1 and the air intake control valve 2, and is used to filter the gas output from the pressure gas source 1.

[0039] In some preferred embodiments, the main body 31 is rotatably mounted on the support of the air separator via a pair of symmetrically arranged rotating shafts 34, one of which is a hollow structure, with one end connected to the receiving cavity 32 and the other end rotatably and sealed to the connecting pipe 6 between the air intake control valve 2, such as by a sealing ring 7; the end of the connecting pipe 6 is fitted onto the end of the rotating shaft 34, and the sealing ring 7 abuts against the connecting pipe 6 and the rotating shaft 34.

[0040] An air classifier includes the aforementioned jetting device.

[0041] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A jet cleaning device for an air classifier, the air classifier comprising a drive shaft, a driven shaft, a mesh belt, and a scraper; the mesh belt is wound around the drive shaft and the driven shaft, and the scraper is disposed between the upper and lower mesh belts for cleaning the surface of the drive shaft; the jet cleaning device is used to clean the position where the drive shaft contacts the scraper; characterized in that, The blowing device includes a pressurized air source, an air inlet control valve, and blowing equipment. The pressurized air source is connected to the jetting device through the air intake control valve; The jetting device includes a body, a receiving cavity, and multiple jet holes; The main body is a columnar structure that can rotate, and the axis of rotation is installed between the upper and lower mesh belts with the axis of rotation parallel to the active axis. The receiving cavity is located within the main body and is connected to the pressure air source through the air intake control valve; One end of the jet nozzle is connected to the receiving cavity, and the other end is located on the surface of the body. The outlets of the multiple jet nozzles are non-uniformly distributed so that the body can rotate when the multiple jet nozzles exhaust air at the same time and spray air towards the position where the drive shaft contacts the scraper.

2. The jet-blowing device for the air classifier according to claim 1, characterized in that, The main body has a cylindrical structure; The multiple air outlets are spirally distributed around the axis of the jetting device, and the angle E between the outlet and the direction D is greater than 0°; the direction D is the direction when the outlet is perpendicular to the axis.

3. The jet-blowing device for the air classifier according to claim 2, characterized in that, The included angle E is greater than or equal to 30° and less than or equal to 45°.

4. The jet-blowing device for the air classifier according to claim 3, characterized in that, The included angle E is 35°.

5. The jet-blowing device for the air classifier according to claim 2, characterized in that, The center-to-center distance between adjacent jet outlets is 0.75cm-2cm.

6. The jet-blowing device for the air classifier according to claim 1, characterized in that, The diameter of the jet nozzle is greater than 0 mm and less than or equal to 5 mm.

7. The jet-blowing device for the air classifier according to claim 6, characterized in that, The diameter of the jet nozzle is 1 mm.

8. The jetting device for the air classifier according to any one of claims 1-7, characterized in that, It also includes a time relay; the time relay is connected to the intake control valve and is used to control the opening and closing of the intake control valve.

9. The jet-blowing device for the air classifier according to any one of claims 1-7, characterized in that, It also includes a filter; the filter is connected in series in the connecting pipeline between the pressure gas source and the air intake control valve, and is used to filter the gas output from the pressure gas source.

10. An air separator, characterized in that, Includes the jetting device described in any one of claims 1-9.

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