CN207204400U - A kind of cyclone separator with split blast pipe - Google Patents

Abstract

It the utility model is related to a kind of cyclone separator with split blast pipe, belong to Cyclone Separation Technology field, the cyclone separator includes charging aperture, blast pipe, disengagement chamber, dust flue, the exhaust pipe lower part, which sets up separately, is equipped with vertical masonry joint, vertical masonry joint is uniformly distributed on blast pipe, and exhaust bottom of the tube is enclosed construction.Blast pipe is co-axially mounted with cyclone separator disengagement chamber, and it inserts the position that separation cavity length extends approximately to flush with entrance bottom of the tube.The blast pipe of cyclone separator can be such that radial air inlet speed is uniformly distributed vertically in the utility model, the energy loss inside blast pipe can be effectively reduced, suppresses the generation of recirculating zone in blast pipe, makes cyclone separator interior flow field more steady, it is small with energy consumption, the advantages that separative efficiency is high.

Description

A cyclone separator with a slotted exhaust pipe

technical field

The invention relates to the technical field of separation and belongs to the technical field of cyclone separators, in particular to a device for separating solid or liquid impurities in gas by means of centrifugal separation.

Background technique

Cyclone separator is a very important dust removal equipment, which is widely used in many industries, such as chemical industry, petroleum industry, thermal power plant and environmental protection industry. Compared with other separators, the structure of the cyclone separator is relatively simple, each part is relatively static, the separation efficiency is relatively high, and its pressure drop is not as high as that of the bag filter, and the cyclone separator has a large The advantage is that it is suitable for process gases with high temperature, high pressure and high concentration.

When the traditional cyclone separator is working, the purified airflow from the cyclone separator still maintains a high rotation speed after entering the exhaust pipe. Since the rotating airflow in the exhaust pipe is of no benefit to separation, the high-speed rotation of the airflow only It can bring energy consumption, and the higher the rotation speed, the greater the rotational kinetic energy and the greater the energy consumption. In addition, the axial velocity of the airflow in the exhaust pipe gradually decreases from the side wall to the center, and the velocity gradient is large, showing the characteristics of a strong shear flow. The axial velocity even appears negative near the center, resulting in a recirculation zone. The existence of the recirculation zone near the center of the exhaust pipe will inevitably lead to an increase in the flow resistance in the exhaust pipe, resulting in a corresponding energy loss.

Contents of the invention

The purpose of the present invention is to solve the problem that the high-speed rotation of the air flow in the exhaust pipe of the traditional cyclone separator is not beneficial to the separation and causes a large energy loss. Another object of the present invention is to address the recirculation zone created in the exhaust duct of a conventional cyclone separator.

The technical scheme of the present invention: a cyclone separator with a slotted exhaust pipe. The exhaust pipe is installed in the axial position of the separation chamber. The inset length of the exhaust pipe extends approximately to the level with the bottom of the inlet. Eight rectangular straight slits are evenly distributed in the lower part of the exhaust pipe, and the bottom is a closed structure.

The advantages and positive effects of the present invention are: when the cyclone separator is working, since the bottom of the exhaust pipe is a closed structure and 8 straight slits are evenly arranged at its lower part, the gas cannot axially enter from the bottom of the exhaust pipe, and can only It enters radially from the straight seam, and when the gas enters, it is discharged axially from the exhaust pipe. At this time, the air flow in the exhaust pipe no longer rotates at a high speed, thereby reducing energy loss. Because the bottom is a closed structure, the axial velocity near the center of the exhaust pipe will not have a negative value, thereby suppressing the generation of the recirculation zone. The invention has a reasonable structure and is easy to process and manufacture. The slotted design of the exhaust pipe effectively reduces the energy loss inside the exhaust pipe and suppresses the generation of the recirculation zone, reduces the internal pressure loss of the cyclone separator, and improves the cyclone separation. The internal flow field of the device.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic perspective view of the exhaust pipe in Fig. 1 .

Fig. 3 is a front view of the exhaust pipe in Fig. 1 .

Fig. 4 is a cross-sectional view of the straight seam of the exhaust pipe in Fig. 1 .

In the figure: 1 is an exhaust pipe, 2 is an inlet, 3 is a separation chamber, 4 is a dust outlet, 5 is a straight seam, and 6 is a closed structure.

Detailed ways

The present invention will be described in detail below in conjunction with accompanying drawings 1-4.

1. Embodiment:

Referring to Figure 1, the cyclone separator in the illustration includes an exhaust pipe (1), an inlet (2), a separation chamber (3), and a dust outlet (4), and the separation chamber (3) and the inlet (2) The outer casing of the cyclone separator is formed by sealing butt joint, and the exhaust pipe (1) is installed at the axial position of the separation chamber (3). The lower part of the above-mentioned exhaust pipe (1) is provided with a straight seam (5) and the bottom is a closed structure (6). The above-mentioned straight seams (5) are set to 8 and are evenly distributed in the lower part of the exhaust pipe. The inset length of the exhaust pipe (1) extends approximately flush with the bottom of the inlet (2).

The working principle of the present invention: when the material to be separated enters the separator from the inlet (2) of the cyclone separator, the inlet (2) is arranged tangentially. When entering the separator, the airflow begins to rotate downwards. During the rotation of the airflow, the particles are moved to the wall of the separation chamber (3) and the dust outlet (4) due to the centrifugal force, and are thrown to the solids on the wall. After the particles touch the wall, they lose their inertial force, and rely on their own gravity to settle down and be discharged from the dust outlet (4). The gas moves downward along the helical line until the cone section at the lower part of the cyclone separator. After entering the cone section, it continues to rotate and descend, but the radius of its rotation becomes smaller and smaller. According to the principle of constant momentum moment, the speed of the gas continues to increase. , when it reaches a certain point of the conical section, it will rotate from the middle of the cyclone separator to the top at the same rotation speed. Since the bottom of the exhaust pipe (1) is a closed structure (6), the upwardly reversed gas can only enter tangentially from the straight seam (5) of the exhaust pipe, and finally be discharged from the outlet of the exhaust pipe (1).

Claims (4)

1. a kind of cyclone separator with split blast pipe, including blast pipe (1), entrance (2), disengagement chamber (3) and dust discharge Manage (4)；The disengagement chamber (3) docks the shell body to form the cyclone separator with entrance (2) and dust flue (4) sealing；It is described Blast pipe (1) is arranged on the axial location of disengagement chamber (3)；The lower part of described blast pipe (1) is provided with vertical masonry joint (5)；It is described Blast pipe (1) bottom is enclosed construction (6).

A kind of 2. cyclone separator with split blast pipe according to claim 1, it is characterised in that described row The enclosed construction (6) of tracheae (1) bottom is identical with blast pipe (1) diameter and is solid cylinder, and its height is vertical masonry joint (5) bottom The distance between blast pipe (1) bottom.

A kind of 3. cyclone separator with split blast pipe according to claim 1, it is characterised in that blast pipe (1) interpolation length extends approximately to the position flushed with entrance (2) bottom.

A kind of 4. cyclone separator with split blast pipe according to claim 1, it is characterised in that blast pipe (1) vertical masonry joint (5) on is rectangle, is arranged on blast pipe (1) wall and runs through blast pipe (1), totally 8 and is uniformly distributed in Blast pipe (1) bottom.