Cylindrical air filtering inlet device of circulating fan of cigarette making machine

Abstract

The utility model belongs to the technical field of auxiliary machinery of cigarette making machines, and particularly relates to a cylindrical air filtering inlet device of a circulating fan of a cigarette making machine, which comprises a mounting flange and a filter screen fixedly connected with the mounting flange, the filter screen is a round tube with one closed end, and filtering holes are arranged on the side wall of the round tube. And the opening directions of the air inlets of the filtering holes in the side wall of the round pipe are not all the same. An air inlet of the circulating fan is changed into an open form of the cylindrical filter screen, so that the circulating fan is communicated with a constant-temperature, constant-humidity and clean atmospheric environment of a workshop, the temperature of airflow passing through a fluidized bed is effectively reduced during operation of equipment, loss of moisture of tobacco shreds is reduced, and the service life of the equipment is prolonged. Meanwhile, through the design of the cylindrical filter screen, the surface area in contact with the air is enlarged, most smoke dust in the air environment can be more favorably blocked, the smoke dust blocking risk is reduced, and the equipment operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cigarette machine auxiliary machinery technical field, concretely relates to a cylindrical air filter inlet device of cigarette machine circulating fan. BACKGROUND

[0002] At present, domestic high-speed machine models such as ZJ116, ZJ118, ZJ119 have been used by many cigarette production enterprises as main production machine models, these high-speed machine models all apply fluidized bed thread feeding technology, fluidized bed refers to suspending a large number of solid particles in moving fluid, so that the particles have certain apparent characteristics of fluid.This kind of fluid-solid contact state is called solid fluidization, namely fluidized bed.The technology has the characteristics of uniform, stable and maintenance-free tobacco conveying, but fluidized bed thread feeding needs a fan to provide circulating airflow, the positive pressure air generated by the fan conveys tobacco, and the tobacco is conveyed from the fluidized bed to the air chamber.

[0003] At present, ZJ116, ZJ118 and other domestic high-speed machine models use closed-loop circulating fans to provide soft airflow to the fluidized bed for high-speed tobacco conveying, and the working principle is as follows: when the circulating fan works, the airflow enters the air distribution box of the machine two side wallboards through the air pipe for airflow distribution, and is distributed to the fluidized bed, primary separation and secondary separation nozzle devices.The inlet end of the circulating fan is connected with the upper air outlet pipe of the fluidized bed, forming an internal airflow circulation loop.The use of closed-loop circulating fan technology greatly reduces the tobacco breakage rate, and the uniformity, filling density and tobacco stem separation of tobacco are fully improved.

[0004] However, during the operation of the closed-loop circulating fan, the air is compressed by the fan impeller and generates heat by rubbing with the impeller, fan housing and air pipe, causing the circulating air temperature to continuously rise.When the circulating air temperature is too high, the following problems may exist:

[0005] 1. The moisture of the cigarette gradually decreases, causing the moisture of the cigarette to fluctuate, which affects the sensory quality of the same brand of cigarette product.

[0006] 2. The volatile components in the essence added to the tobacco volatilize too much, affecting the consistency of the aroma, thereby affecting the overall sensory quality of the cigarette.

[0007] 3. The moisture of the tobacco is low, which increases the breakage of the tobacco during the thread feeding process.The increase of the broken tobacco rate increases the process loss rate of the process, directly affecting the cost economic benefit of the factory;On the other hand, it increases the weight fluctuation in the subsequent cigarette forming process, significantly increases the cigarette empty rate, and directly affects the internal and external quality of the cigarette. INVENTION CONTENTS

[0008] The utility model discloses a cylindrical air filter inlet device of circulating fan of cigarette making machine to solve the problems in the above background technology.

[0009] To achieve the above object, the application is realized by the following technical scheme:

[0010] A cylindrical air filter inlet device of circulating fan of cigarette making machine, comprising mounting flange and the filter screen fixedly connected with the mounting flange, the filter screen is the round pipe of one end closed, is provided with filter hole on the lateral wall of round pipe, and the opening direction of the air inlet of filter hole on the lateral wall of round pipe is not all same.

[0011] Further, the filter holes on the lateral wall of round pipe are arranged in order along the circumferential side and the axial direction of round pipe.

[0012] Further, the opening direction of filter holes in the same column along the axial direction of the lateral wall of round pipe is same.

[0013] Further, the opening direction of filter holes of adjacent four columns on the lateral wall of round pipe is different, and the opening direction of filter holes of every four columns is repeatedly arranged.

[0014] Further, the filter hole comprises the hole body arranged on the lateral wall of round pipe and the cover part integrally connected with the lateral wall of round pipe, and the part not connected between the cover part and the lateral wall of round pipe forms the air inlet of filter hole.

[0015] Further, the outer surface of cover part is arc surface.

[0016] The utility model discloses the beneficial effect is:

[0017] The utility model discloses the open form of circular cylindrical filter screen is changed to circulating fan air inlet, realizes circulating fan and workshop constant temperature, constant humidity, clean atmospheric environment intercommunication, effectively reduces the temperature of airflow through fluidized bed when the equipment runs, reduces the loss of tobacco moisture, simultaneously, through the design of circular cylindrical filter screen, the surface area of air contact is increased, is more favorable to the blocking of most smoke dust in air environment, reduces the risk of smoke dust blockage, improves the efficiency of equipment operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural diagram of circulating fan of the utility model.

[0019] Figure 2 It is the structural diagram of filter screen of the utility model.

[0020] Mark explanation:

[0021] 1, filter screen, 2, connecting bolt, 3, circulating fan, 4, mounting flange, 5, filter hole. DETAILED DESCRIPTION

[0022] The technical scheme of the utility model will be explained in detail in connection with the drawings, and the following examples are only exemplary and can only be used to explain and illustrate the technical scheme of the utility model, but cannot be interpreted as a limitation of the technical scheme of the utility model.

[0023] As shown in Figure 1 The utility model provides a circular air filter inlet device of circulating fan of cigarette making machine, including mounting flange 4 and fixed connection filter screen 1 with mounting flange, and the filter screen is a closed circular tube, and the filter hole 5 is arranged on the lateral wall of the circular tube, and the opening direction of the air inlet of the filter hole on the lateral wall of the circular tube is not all the same. The filter screen is installed at the inlet of the circulating fan by using connecting bolt, which is used for filtering most of the dust in the workshop environment air, and simultaneously plays the role of connecting the inside and outside of the circulating fan and having ventilation and heat dissipation effect; the connecting bolt 2 is used for connecting and fixing the filter screen 1 and the circulating fan 3.

[0024] In the application, the filter holes on the lateral wall of the circular tube are arranged in order along the circumferential side and the axial direction of the circular tube, as shown in Figure 1 And Figure 2 As shown in the drawings, a plurality of filter holes are arranged on the lateral wall of the circular tube, and in the embodiment, the opening directions of the filter holes on the adjacent two sides are all different, and more specifically, in the embodiment, four rows of filter holes are taken as a cycle, because the direction of each row of filter holes of the application is the same, the direction of the four rows of filter holes is evenly arranged in the circumferential direction of an imaginary circle and is distributed at 90 degrees, and such arrangement of filter holes can avoid obvious inhalation sound when inhaling.

[0025] The filter hole of the application includes a hole body arranged on the lateral wall of the circular tube and a cover part integrally connected with the lateral wall of the circular tube, and the part of the cover part not connected with the lateral wall of the circular tube forms the air inlet of the filter hole. The specific processing method is realized by stamping, mainly the end of the punch is beveled, and when stamping, the filter hole and the cover structure of the application can be processed. As long as the directions of the bevels of the four adjacent punches are different when processing, four filter holes with different opening directions can be stamped out. The specific processing method belongs to the conventional technology in the field, and will not be described in detail herein. However, generally, plane stamping is carried out on a piece of metal plate, then the circular tube of the application is coiled and connected, and then the mounting flange is welded and fixedly connected.

[0026] In the application, the surface of the cover part is arc-shaped, and the main function is to disperse the force of the surrounding air when passing through the filter hole.

[0027] The most prominent point of the present application is to change the original closed loop fan circulation to open loop type, the inlet is communicated with the workshop environment air through the change into the form of cylindrical filter screen. The change into the cylindrical filter screen increases the surface area of the filter part to a certain extent, which is conducive to better blocking the smoke dust in the environment, and increases the degree of ventilation and heat dissipation. The inlet of the circulating fan is communicated with the clean, constant temperature and constant humidity atmosphere environment of the workshop, so that the compressed air entering the fluidized bed is clean, constant temperature and constant humidity; at the same time, with the clean, constant temperature and constant humidity atmosphere air of the workshop joining the circulation, the temperature of the circulating air flow can be effectively reduced, so as to reduce the loss of tobacco moisture and the loss of aroma.

[0028] By using the open circulating fan, the temperature of the fluidized bed air flow is reduced, the smoke dust is reduced, the loss of tobacco moisture is less, and the aroma is preserved, so that the equipment operation is more efficient, the cleaning is more convenient, and the quality of the product is guaranteed. At the same time, the utility model has the characteristics of convenient installation, low transformation cost, maintenance free, obvious effect and the like.

[0029] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples. Within the scope of the present application, changes, changes, additions or replacements made by ordinary skilled in the art should belong to the protection scope of the present application.

Claims

1. A cylindrical air filtration inlet device for a cigarette maker circulation fan, characterized by, The filter screen is a closed circular tube, and the filter holes are arranged on the side wall of the circular tube.

2. The cylindrical air filtration inlet device for a cigarette machine circulation fan as defined in claim 1, wherein, The filter holes on the side wall of the circular tube are arranged in order along the circumferential side and the axial direction of the circular tube.

3. The cylindrical air filtration inlet device for a cigarette machine circulation fan as defined in claim 2, wherein, The opening directions of the filter holes in the same column along the axial direction of the side wall of the circular tube are the same.

4. The cylindrical air filtration inlet device for a cigarette machine circulation fan of claim 3, wherein, The opening directions of the filter holes in every four columns are different and are repeatedly arranged.

5. The cylindrical air filtration inlet device for a cigarette machine circulation fan as defined in claim 1, wherein, The filter hole comprises a hole body arranged on the side wall of the circular tube and a cover part integrally connected with the side wall of the circular tube, and the part of the cover part not connected with the side wall of the circular tube forms an air inlet of the filter hole.

6. The cylindrical air filtration inlet device for a cigarette machine circulation fan of claim 5, wherein, The outer surface of the cover part is an arc surface.

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