Buffer pipe fitting for discharge hole of reaction kettle

Abstract

The utility model discloses a reaction kettle discharge port buffer pipe fitting which comprises a connecting flange, a flow guide section, a buffer section and a discharge section which are sequentially arranged from top to bottom, spiral flow deflectors and flow guide holes are arranged in the buffer section and form a composite flow guide structure, and the spiral flow deflectors are evenly distributed in the axial direction of the inner wall of the buffer section to form a spiral descending channel. Flow guide holes which are arranged at equal intervals are formed in the spiral flow guide sheet in a penetrating manner; a circular flow blocking platform is arranged on the inner side of the discharging section; the flow guiding section, the buffering section and the discharging section are connected through screws, the discharging section is in a barrel shape, a pipe opening is formed in the bottom of the discharging section in a penetrating mode, the bottom of the circular flow blocking platform is connected with the bottom wall of the discharging section through a connecting rod in a welded mode, and the outer diameter of the circular flow blocking platform does not exceed one half of the outer diameter of the discharging section; the utility model has the advantages of reducing the impact of materials on the pipe wall, avoiding the blockage of accumulated materials, prolonging the service time and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of material conveying pipe fitting, especially relates to a reaction kettle discharge port buffer pipe fitting. BACKGROUND

[0002] The conventional reaction kettle discharge pipe usually adopts straight-through structure, and high-speed impact of materials can easily lead to abrasion perforation of the pipe wall due to direct scouring of the materials, so that the service life of the conventional structure is less than 2000 hours, affecting the continuous production stability.

[0003] The existing improvement scheme such as CN203030251U can reduce the flow rate by arranging a curved pipeline at the reaction kettle discharge port, but has defects such as excessive pressure drop and easy material accumulation, and large-particle materials are easily accumulated at the elbow to cause blockage. UTILITY MODEL CONTENT

[0004] The utility model discloses a reaction kettle discharge port buffer pipe fitting which can solve the problems of abrasion of the pipe wall due to material impact, easy material accumulation and blockage and short service life of the conventional reaction kettle discharge pipe.

[0005] The utility model discloses a reaction kettle discharge port buffer pipe fitting which can solve the problems of abrasion of the pipe wall due to material impact, easy material accumulation and blockage and short service life of the conventional reaction kettle discharge pipe.

[0006] Further, the discharge section is designed in a barrel shape and is provided with a pipe opening at the bottom, the bottom of the circular flow resistance platform is connected with the bottom wall of the discharge section through a connecting rod, and the outer diameter of the circular flow resistance platform is not more than 1 / 2 of the outer diameter of the discharge section.

[0007] Further, the longitudinal length of the buffer section is 1 / 3-1 / 2 of the total length of the buffer pipe fitting, and the outer diameter of the buffer section is not less than the outer diameters of the flow guide section and the discharge section.

[0008] Further, the helical guide vane has a helical angle of 20-45°, and the guide hole has a diameter of 1 / 20-1 / 10 of the pipe diameter; the greater the helical angle of the helical guide vane and the greater the diameter of the guide hole, the worse the effect of reducing the flow rate of the material.

[0009] Further, the guide section has a truncated cone structure, and an axis of the guide section has an inclined angle of 15-45° with the vertical direction.

[0010] Further, the inner wall of the buffer section is provided with an anti-corrosion coating, and the surface of the guide vane is compounded with a wear-resistant ceramic layer.

[0011] Further, the anti-corrosion coating is a polytetrafluoroethylene coating with a thickness of 0.2-0.5 mm, and the wear-resistant ceramic layer is an aluminum oxide ceramic layer with a thickness of 1-2 mm.

[0012] Beneficial effects: the utility model discloses the following beneficial effects:

[0013] 1. In the utility model scheme, through the three-stage buffer design of helical guide vane, guide hole and resistance platform, the kinetic energy gradient dissipation is realized: the helical guide vane converts the axial flow rate into rotational kinetic energy, so that the flow rate is reduced to half, the guide hole jet interference destroys the cyclone stability, so that the flow rate is further reduced, and the resistance platform generates a reverse pressure gradient, and finally the outlet impact force is reduced to one third of the traditional structure.

[0014] 2. In the utility model scheme, through the gradient material composite technology of coating PTFE and ceramic layer, the wear resistance is doubled, the corrosion resistance grade is higher, and the overall service life of the pipe fitting is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structural schematic view of the utility model;

[0016] Fig. 2 It is a buffer section structure sectional view of the utility model;

[0017] Fig. 3 It is a discharge section structure sectional view of the utility model.

[0018] In the drawing: 1-connecting flange, 2-guide section, 3-buffer section, 4-discharge section;

[0019] 31-helical guide vane, 32-guide hole, 41-circular resistance platform. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0021] In combination Figs. 1 to 3 The utility model discloses a kind of reaction kettle discharge port buffer tubes, including sequentially arranged from top to bottom connecting flange 1, flow guide section 2, buffer section 3 and discharge section 4, buffer section 3 inside is equipped with helical flow guide piece 31 and flow guide hole 32 and is composed of composite flow guide structure, helical flow guide piece 31 is evenly distributed along buffer section 3 inner wall axial and form spiral descending channel, helical flow guide piece 31 is equipped with equidistantly arranged flow guide hole 32 on it, discharge section 4 inside is equipped with circular resistance flow platform 41;Flow guide section 2, buffer section 3 and discharge section 4 are connected by screw.

[0022] Wherein, discharge section 4 is barrel-shaped design and bottom is equipped with pipe mouth, circular resistance flow platform 41 bottom and discharge section 4 bottom wall are connected by connecting rod welding, circular resistance flow platform 41 outer diameter is not more than 1 / 2 of discharge section 4 outer diameter;High-speed material passing through the middle of helical flow guide piece 31 is blocked by circular resistance flow platform 41, so that material diffuses to circular resistance flow platform 41 periphery and then flows into pipe mouth position, reduce direct impact on material conveying pipeline.

[0023] The longitudinal length of buffer section 3 is 1 / 3-1 / 2 of the total length of buffer tube, and the outer diameter size is not less than the outer diameter size of flow guide section 2 and discharge section 4;The deceleration path of the material is extended, the flow rate of the material is reduced, and the wider buffer section 3 can accommodate more materials for rotation speed reduction.

[0024] The helical angle of helical flow guide piece 31 is 20-45 °, and the hole diameter of flow guide hole 32 is 1 / 20-1 / 10 of the pipe diameter;The greater the helical angle of helical flow guide piece 31, the greater the hole diameter of flow guide hole 32, and the worse the effect of reducing the flow rate of the material.

[0025] Flow guide section 2 is in the form of a truncated cone, and the axis thereof forms an inclined angle of 15-45 ° with the vertical direction.

[0026] The inner wall of buffer section 3 is provided with an anti-corrosion coating, and the surface of flow guide piece 31 is compounded with a wear-resistant ceramic layer.

[0027] The anti-corrosion coating is a polytetrafluoroethylene coating with a thickness of 0.2-0.5 mm, and the wear-resistant ceramic layer is an aluminum oxide ceramic layer with a thickness of 1-2 mm.

[0028] Working principle: in the use process of the utility model, the material is primarily rectified through flow guide section 2, helical flow guide piece 31 guides the material to rotate and decelerate along the inner wall when flowing through buffer section 31, flow guide hole 32 generates irregular jet interference to destroy vortex to further reduce the flow rate, resistance flow platform 41 forms a reverse pressure gradient to realize the final kinetic energy dissipation.

[0029] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0030] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A reactor discharge port surge pipe, characterized by: The application relates to a connecting flange (1), a flow guiding section (2), a buffer section (3) and a discharge section (4) arranged in sequence from top to bottom, wherein the buffer section (3) is internally provided with spiral flow guiding fins (31) and flow guiding holes (32) and forms a composite flow guiding structure, the spiral flow guiding fins (31) are uniformly distributed along the inner wall of the buffer section (3) in an axial direction to form a spiral descending channel, the spiral flow guiding fins (31) are provided with equidistantly arranged flow guiding holes (32) penetrating through the spiral flow guiding fins (31), and the discharge section (4) is internally provided with a circular flow resistance platform (41).

2. A reactor discharge port buffer tube according to claim 1, wherein: The discharge section (4) is designed in a barrel shape and is provided with a pipe opening penetrating through the bottom, the bottom of the circular flow resistance platform (41) is connected with the bottom wall of the discharge section (4) through a connecting rod, and the outer diameter of the circular flow resistance platform (41) is not more than 1 / 2 of the outer diameter of the discharge section (4).

3. The discharge port buffer pipe of a reaction vessel according to claim 1, characterized in that: The longitudinal length of the buffer section (3) is 1 / 3-1 / 2 of the total length of the buffer pipe, and the outer diameter of the buffer section (3) is not less than the outer diameters of the flow guiding section (2) and the discharge section (4).

4. The discharge port buffer pipe of a reaction vessel according to claim 1, characterized in that: The spiral angle of the spiral flow guiding fin (31) is 20-45 degrees, and the hole diameter of the flow guiding hole (32) is 1 / 20-1 / 10 of the pipe diameter.

5. The discharge port buffer pipe of a reaction vessel according to claim 1, characterized in that: The flow guiding section (2) is in a truncated cone structure, and the axial line and the vertical direction form an inclined angle of 15-45 degrees.

6. A reactor discharge port buffer tube according to claim 1, wherein: The inner wall of the buffer section (3) is provided with an anticorrosion coating, and the surface of the flow guiding fin (31) is compounded with a wear-resistant ceramic layer.

7. A reactor vessel outlet buffer pipe according to claim 6, wherein: The anticorrosion coating is a polytetrafluoroethylene coating with a thickness of 0.2-0.5 mm, and the wear-resistant ceramic layer is an alumina ceramic layer with a thickness of 1-2 mm.

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