CN201848320U - Swirler based on fins at center of ring gear - Google Patents

Abstract

The utility model relates to a cyclone based on ring tooth center fins. The swirler is composed of a swirler body and a ring tooth center fin. The center fins of the ring teeth are concentrically installed in the cyclone body, and its upper end is fixedly connected with the fixed cover (3). The cover (3) is fixedly connected with the housing (5). The thin metal rod (7) of the central fin of the ring tooth passes through the settling nozzle (8) provided at the lower part of the cyclone body and the chassis (9) installed at the lower end, and the length of the metal thin rod (7) passing through the chassis (9) is 5 ~ 20mm. The central fin of the ring tooth includes the ring tooth overflow pipe (2), the fin (6) and the thin metal rod (7); the upper end of the fin (6) is concentrically fixed on the lower end of the ring tooth overflow pipe (2) , the upper part of the thin metal rod (7) is placed in the central through hole of the ring tooth overflow pipe (2) and the fin (6), and the thin metal rod (7) is fixedly welded to the fin (6). The utility model has the characteristics of improving the overflow yield, increasing the processing capacity and improving the separation (stage) efficiency.

Description

A Cyclone Based on Ring Tooth Center Fins

technical field

The utility model belongs to the technical field of cyclones. In particular, it relates to a swirler based on ring tooth central fins.

Background technique

At present, the hydrocyclone used for solid-liquid phase separation and solid-phase particle classification has the advantages of simple structure, convenient operation, large production capacity, small footprint, no transmission parts and easy automatic control. It has been widely used in many fields, but the separation (stage) efficiency is low and needs to be further improved. The specific reasons are: there are coarse particles mixed in the overflow, resulting in poor quality of the overflow; the cyclone is affected by the air when it is working The column disturbance is serious, which makes the flow field in the cyclone become unstable, the separation (stage) efficiency decreases and the energy loss increases.

For this reason, people use an overflow pipe with ring tooth structure in the swirler or insert a central fin structure inside the swirler. The single annular tooth structure has almost no improvement on the standard cyclone, and the overflow yield, graded quality efficiency, and overflow fineness are all reduced; the single central fin structure does improve the standard cyclone, and the overflow The outflow speed of sand settling and sand settling has become moderate, and the overflow yield and grading quality efficiency have increased, but the effect is not very obvious. There is still a lot of room for improvement in overflow yield and grading quality efficiency.

Contents of the invention

The utility model aims to overcome the deficiencies of the prior art, and aims to provide a cyclone based on ring-toothed central fins that can increase overflow yield, increase processing capacity and improve separation (stage) efficiency.

In order to achieve the above purpose, the technical solution adopted by the utility model is: the swirler is composed of a swirler body and ring tooth center fins. The cyclone body includes an overflow cover, a shell, a grit nozzle and a chassis. The overflow cover is fixed on the upper end of the shell. The upper part of the shell is provided with an ore feeding port. The inner wall of the lower end of the shell is equipped with a chassis. The wall is provided with a grit chamber.

The central fin of the ring tooth includes a ring tooth overflow pipe, a fin and a thin metal rod; the upper end of the fin is concentrically fixed on the lower end of the ring tooth overflow pipe, and the upper half of the metal thin rod is placed in the ring tooth overflow pipe And in the central through hole of the fin, the lower half passes through the fin, the upper end of the thin metal rod is 3-8mm lower than the upper end surface of the ring tooth overflow pipe, and the thin metal rod is fixedly welded to the fin.

The center fins of the ring teeth are concentrically installed in the cyclone body. The specific structure is: the upper end of the center fins of the ring teeth is fixedly connected with the fixed cover, the fixed cover is placed on the upper surface of the shell, and the overflow cover is pressed tightly on the fixed cover. The upper part is fixedly connected with the shell; the thin metal rod of the central fin of the ring tooth passes through the grit nozzle installed at the lower part of the cyclone body and the chassis installed at the lower end, and the length of the thin metal rod passing through the chassis is 5-20 mm.

The center of the ring tooth overflow pipe is provided with an equal-diameter through hole, the upper half of the ring tooth overflow pipe is a hollow cylinder, and the lower half of the ring tooth overflow pipe is evenly spaced with three ring teeth. ; The tooth plane of the upper annular tooth faces downward, and the tooth planes of the lower annular tooth and the middle annular tooth face upward.

The shapes of the three ring teeth are the same, the maximum outer diameter d3 of the ring teeth is 0.6 to 0.7 times the inner diameter of the shell where the overflow pipe of the ring teeth is located, and the tip angle of the ring teeth is 25° to 35°. The ring tooth overflow pipe is either an integral ring tooth overflow pipe or an assembled ring tooth overflow pipe.

The assembled annular tooth overflow pipe is composed of an overflow pipe, three annular teeth and two sleeves; its structure is that the overflow pipe is composed of an upper hollow cylinder and a lower hollow small cylinder, and three The annular teeth are set on the small hollow cylinder at the bottom of the overflow pipe in sequence from top to bottom. A sleeve is installed between the three annular teeth. The minimum outer diameter d2 of the three annular teeth is the same as the outer diameter of the two sleeves. The diameters are the same; the upper annular teeth and the middle annular teeth are transition fit with the overflow pipe, the lower annular teeth and the overflow pipe are interference fit, and the sleeve and the overflow pipe are transition fit.

The cross-section of the fins is that four identical strip-shaped metal plates are symmetrically arranged in the shape of a "ten", and the center of the cross-section of the fins is a through hole; the upper half of the strip-shaped metal plates is rectangular, and the lower half Some are right triangles.

Due to the above-mentioned technical scheme, the utility model has the following positive effects:

1 Ring teeth The ring teeth in the center fin can disrupt the flow down the cover, from laminar flow state to turbulent flow state, reducing the possibility of coarse particles in this part of the fluid entering the overflow.

2. The central fins of the ring teeth can break the original air column into four small air columns, which reduces the disturbance of the air column and makes the separation process stable, thereby reducing part of the energy consumption and improving the classification efficiency.

3. The central fin of the ring tooth can stabilize the flow field inside the cyclone, thereby increasing the processing capacity.

4. The central fins of the ring teeth can reduce the local loss of energy, and at the same time reduce the outlet velocity of the overflow and underflow, thereby increasing the potential energy of the fluid and increasing the overflow yield.

Compared with the original standard cyclone, the utility model has the overflow production rate increased by about 83%, the processing capacity increased by about 59%, and the classification quality efficiency increased by about 85%. Compared with the original standard cyclone, the single-acting ring-shaped tooth structure cyclone has a slight decrease in each index. Compared with the original standard cyclone, the single-acting central fin structure cyclone can increase the overflow yield by about 39%, increase the processing capacity by about 52%, and increase the classification efficiency by about 30%.

Therefore, the utility model has the characteristics of improving overflow yield, increasing processing capacity and improving separation (stage) efficiency.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model;

Fig. 2 is a schematic diagram of a ring tooth central fin in Fig. 1;

Fig. 3 is the bottom view of Fig. 2;

Fig. 4 is a structural cross-sectional view of ring tooth overflow pipe 2 in Fig. 2;

Fig. 5 is another kind of structure schematic diagram of ring tooth overflow pipe 2 in Fig. 2;

Fig. 6 is a sectional view of A-A in Fig. 1 .

Detailed ways

Below in conjunction with specific embodiment, the utility model is further described, not limiting the scope of protection:

Example 1

A swirler based on a ring-toothed center fin. As shown in Figure 1, the swirler is composed of a swirler body and a ring tooth center fin. The cyclone body includes an overflow cover 1, a shell 5, a grit nozzle 8 and a chassis 9. The overflow cover 1 is fixed on the upper end of the shell 5, and the upper part of the shell 5 is provided with an ore opening 4, and the inner wall of the lower end of the shell 5 is A chassis 9 is installed, and the inner wall of the housing 5 above the chassis 9 is provided with a grit chamber 8 .

The central fin of the ring tooth is shown in Figure 2, including the ring tooth overflow pipe 2, the fin 6 and the metal thin rod 7; the upper end of the fin 6 is concentrically fixed on the lower end of the ring tooth overflow pipe 2, and the metal thin rod The upper part of 7 is placed in the central through hole of the ring tooth overflow pipe 2 and the fin 6, the lower part passes through the fin 6, and the upper end of the thin metal rod 7 is lower than the upper end surface of the ring tooth overflow pipe 2. 8mm, metal thin rod 7 and fin 6 are fixedly welded.

The center fins of the ring teeth are concentrically installed in the cyclone body, and the specific structure is shown in Figure 1: the upper end of the center fins of the ring teeth is fixedly connected with the fixed cover 3, and the fixed cover 3 is placed on the upper end surface of the shell, and the overflow The cover 1 is tightly pressed on the fixed cover 3 and fixedly connected with the housing 5; the metal thin rod 7 of the ring tooth center fin passes through the grit settling nozzle 8 set at the lower part of the cyclone body and the chassis 9 installed at the lower end, and the metal thin rod 7 passes through The length of the chassis 9 is 5-20 mm.

The center of the ring tooth overflow pipe 2 described in this embodiment is provided with equal-diameter through holes, the upper half of the ring tooth overflow pipe 2 is a cylinder, and the lower half of the ring tooth overflow pipe 2 is evenly spaced. There are three annular teeth; the tooth plane of the upper annular tooth 14 faces downward, and the tooth planes of the lower annular tooth 10 and the middle annular tooth 12 face upward;

As shown in Figures 1 and 4, the shapes of the three annular teeth 14, 12 and 10 are the same, and the maximum outer diameter d3 of the annular teeth is 0.6 to 0.7 times the inner diameter of the housing 5 where the annular tooth overflow pipe 2 is located , the tip angle of the annular teeth is 25°-35°, and the annular tooth overflow pipe 2 is an assembled annular tooth overflow pipe.

Fig. 4 is the assembly type annular tooth overflow pipe described in this embodiment, is made up of overflow pipe 13, three annular teeth 14, 12 and 10, and two sleeves 15 and 11; Its structure is overflow pipe 13 is composed of an upper hollow cylinder and a lower hollow cylinder. Three annular teeth 14, 12 and 10 are sequentially fitted on the hollow cylinder at the lower part of the overflow pipe 13 from top to bottom. The three annular teeth Sleeves 15 and 11 are respectively installed between 14, 12 and 10, the minimum outer diameter d2 of the annular tooth is the same as the outer diameter of the two sleeves 15 and 11, and the inner diameter d1 of the two sleeves 15 and 11 is the same as the hollow The outer diameters of the small cylinders are the same; the upper annular teeth 14 and the middle annular teeth 12 are transition fits with the overflow pipe 13, and the lower annular teeth 10 and the overflow pipe 13 are interference fits. 11 and 15 are transition fit with overflow pipe 13.

Fin 6 is shown in Figure 3, and its cross section is that four identical strip metal plates are arranged symmetrically in the shape of a "ten", and the center of the cross section of fin 6 is a through hole; the upper half of the strip metal plate It is a rectangle and the lower half is a right triangle.

Chassis 9 is shown in Figure 6, and chassis 9 is provided with four through-holes, and four through-holes are centrally symmetrical and evenly distributed, to ensure that fluid passes through smoothly, and the center of chassis 9 is provided with a small metal rod 7 that can pass through. circular hole; the lower end of the chassis 9 housing 5 is threaded.

Example 2

A swirler based on a ring-toothed center fin. The ring tooth overflow pipe 2 is shown in Figure 5, which is an integral ring tooth overflow pipe, that is, it is processed into an integral part. The part is machined in one go.

All the other are with embodiment 1.

This embodiment has the following positive effects:

1 Ring teeth The ring teeth in the center fin can disrupt the flow down the cover, from laminar flow state to turbulent flow state, reducing the possibility of coarse particles in this part of the fluid entering the overflow.

2. The central fins of the ring teeth can break the original air column into four small air columns, which reduces the disturbance of the air column and enables the separation process to be carried out stably, thereby reducing part of the energy consumption and improving the classification efficiency.

3. The central fin of the ring tooth can stabilize the flow field inside the cyclone, thereby increasing the processing capacity.

4. The central fins of the ring teeth can reduce the local loss of energy, and at the same time reduce the outlet velocity of the overflow and underflow, thereby increasing the potential energy of the fluid and increasing the overflow yield.

Compared with the original standard cyclone, the utility model has the overflow production rate increased by about 83%, the processing capacity increased by about 59%, and the classification quality efficiency increased by about 85%. Compared with the original standard cyclone, the single-acting ring-shaped tooth structure cyclone has a slight decrease in each index. Compared with the original standard cyclone, the single-acting central fin structure cyclone can increase the overflow yield by about 39%, increase the processing capacity by about 52%, and increase the classification efficiency by about 30%.

Therefore, the utility model has the characteristics of improving overflow yield, increasing processing capacity and improving separation (stage) efficiency.

Claims (4)

1. cyclone based on ring tooth center fin is characterized in that this cyclone is made up of cyclone body and ring tooth center fin; Cyclone body comprises overflow cover (1), housing (5), sand setting mouth (8) and chassis (9), overflow cover (1) is fixed on the upper end of housing (5), housing (5) top is provided with feed port (4), the inwall of housing (5) lower end is equipped with chassis (9), and housing (5) inwall of chassis (9) top is provided with sand setting mouth (8);

Ring tooth center fin comprises ring tooth overflow pipe (2), fin (6) and the thin bar of metal (7); The upper end of fin (6) is fixed on the lower end of ring tooth overflow pipe (2) concentrically; The first half of the thin bar of metal (7) places in the central through hole of ring tooth overflow pipe (2) and fin (6), the latter half passes fin (6), the upper end of the thin bar of metal (7) is lower than ring tooth overflow pipe (2) upper surface 3～8mm, thin bar of metal (7) and the fixing welding of fin (6);

Concentricity being installed in the cyclone body of ring tooth center fin, concrete structure is: the upper end and the fixed cap (3) of ring tooth center fin are fixedly connected, fixed cap (3) places the upper surface of housing, and overflow cover (1) is pressed on the fixed cap (3) and housing (5) is fixedly connected; The thin bar of metal (7) of ring tooth center fin passes the sand setting mouth (8) of cyclone body bottom setting and the chassis (9) that install the lower end, and the length that the thin bar of metal (7) passes chassis (9) is 5～20mm.

2. the cyclone based on ring tooth center fin according to claim 1, the center that it is characterized in that described ring tooth overflow pipe (2) is provided with the equal diameter through hole, the first half of ring tooth overflow pipe (2) is a hollow cylinder, and the latter half of ring tooth overflow pipe (2) offers three ring tooths between equably; The tooth of top ring tooth (14) flats down, below ring tooth (10) and more intermediate annular tooth (12) the tooth plane up;

The shape of three ring tooths (14,12,10) is identical, the maximum outside diameter d3 of ring tooth is 0.6～0.7 times of housing (5) internal diameter at place, ring tooth overflow pipe (2) position, the tooth angle of ring tooth is 25 °～35 °, ring tooth overflow pipe (2) or be a monolithic devices ring tooth overflow pipe or for packaging ring tooth overflow pipe.

3. the cyclone based on ring tooth center fin according to claim 2 is characterized in that described packaging ring tooth overflow pipe is made up of overflow pipe (13), three ring tooths (14,12,10) and two sleeves (15,11); Its structure is that overflow pipe (13) is made of the hollow cylinder on top and the hollow small cylinder of bottom, three ring tooths (14,12,10) are sleeved on the hollow small cylinder of overflow pipe (13) bottom from top to bottom successively, sleeve (15,11) is housed respectively between three ring tooths (14,12,10), and the minimum outer diameter d2 of three ring tooths (14,12,10) is identical with the external diameter of two sleeves (11,15); Top ring tooth (14) and more intermediate annular tooth (12) all and be interference fits between the overflow pipe (13), below be interference fit between ring tooth (10) and the overflow pipe (13), sleeve (11,15) and overflow pipe (13) interference fits.

4. the cyclone based on ring tooth center fin according to claim 1, the cross section that it is characterized in that described fin (6) is that four blocks of identical strip metal plates are " ten " word shape center symmetric arrangement, the cross-section center of fin (6) is a through hole; The first half of strip metal plate is that rectangle, the latter half are right angled triangle.

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