Sand settling nozzle of cyclone

Abstract

The utility model relates to the technical field of hydrocyclones, and discloses a hydrocyclone desilting nozzle which comprises a desilting nozzle body, a cone is fixedly installed at the top of the desilting nozzle body through a flange, a vortex chamber is fixedly installed at the top of the cone through a flange, and a cleaning mechanism is installed in the cone. The cleaning mechanism comprises a first mounting frame fixedly mounted on the top side in the cone, a guide cylinder fixedly mounted in the middle of the first mounting frame, and bearings fixedly mounted on the two sides of the outer wall of the guide cylinder. When a solution flows in the swirler in a spiral shape, the spiral blade arranged in the cone can rotate along with the flowing of the liquid, so that the rotating drum is driven to rotate, the flowing of the liquid is accelerated, the separation and classification speed of the solution can be accelerated, and the bottom scraping plate can be synchronously driven to rotate; particles attached to the inner wall of the desilting nozzle are cleaned, and the situation that coarse particles block the interior of the desilting nozzle, and the solution separation and classification efficiency is reduced is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrocyclones, and specifically relates to a hydrocyclone underflow orifice. Background Technique

[0002] At present, a hydrocyclone is a common separation and classification device, which commonly uses the principle of centrifugal sedimentation. When a two-phase mixed liquid to be separated enters the hydrocyclone tangentially from the periphery at a certain pressure, a strong three-dimensional elliptical strong rotational shear turbulent motion is generated. Due to the particle size difference between coarse particles and fine particles, the centrifugal force, centripetal buoyancy, fluid drag force, etc. acting on them are different. Under the action of centrifugal sedimentation, most of the coarse particles are discharged through the underflow port of the hydrocyclone, while most of the fine particles are discharged through the overflow pipe, so as to achieve the purpose of separation and classification.

[0003] Among them, the underflow orifice is one of the main components in the hydrocyclone. By installing an underflow orifice with a suitable size at the bottom of the hydrocyclone, the direction of the flow field is changed at the moment when the suspension reaches the bottom, and a secondary eddy current rotating upward and in the same direction is designed to be generated inside the eddy current, so that most of the liquid overflows from the top of the separator along with the fine particles.

[0004] Since there are various models of underflow orifices, according to requirements, the inner diameter of some underflow orifices is small. When continuously discharging the coarse particle solution, the coarse particles will continuously adhere to the inner wall of the underflow orifice, which is extremely easy to cause a decrease in the discharge amount of the underflow orifice, thus affecting the separation and classification efficiency of the hydrocyclone. Therefore, new technical solutions need to be designed to solve this problem. Content of the Utility Model

[0005] The purpose of the utility model is to provide a hydrocyclone underflow orifice, which solves the problems raised in the background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a hydrocyclone underflow orifice, including an underflow orifice, a cone is fixedly installed at the top of the underflow orifice through a flange, a vortex chamber is fixedly installed at the top of the cone through a flange, and a cleaning mechanism is installed inside the cone;

[0007] The cleaning mechanism includes a first mounting frame fixedly installed on the top side inside the cone, a guide cylinder fixedly installed in the middle of the first mounting frame, bearings fixedly installed on both sides of the outer wall of the guide cylinder, rotating cylinders fixedly installed on the outer shafts of the two groups of bearings, spiral blades fixedly installed on the outer wall of the rotating cylinder, and a scraper fixedly installed at the bottom of the rotating cylinder.

[0008] As an optional solution of the technical solution of the present application, the scraper is in mutual fit with the inner wall of the underflow orifice, and the spiral blades gradually decrease from top to bottom.

[0009] As an alternative solution of the technical solution of the present application, a feed inlet is connected and installed on the side wall of the vortex chamber, and an overflow pipe is connected and installed on the top of the vortex chamber through a flange. The overflow pipe is connected and installed with the top of the diversion pipe, and fine particle solution can be discharged from the overflow pipe.

[0010] As an alternative solution of the technical solution of the present application, a second mounting bracket is fixedly installed on the bottom side inside the cone, and the middle part of the second mounting bracket is rotatably connected to the bottom of the rotating cylinder, which can support the rotating cylinder.

[0011] As an alternative solution of the technical solution of the present application, a positioning ring is fixedly installed at the bottom of the rotating cylinder, and a mounting clamp is fixedly installed on the outer wall of the positioning ring through bolts, so that the scraper can rotate together with the rotating cylinder.

[0012] As an alternative solution of the technical solution of the present application, a connecting seat is welded on the side wall of the mounting clamp, and the bottom of the connecting seat is fixedly installed with the top of the scraper, which can fix the scraper.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. When the solution flows in a spiral shape inside the hydrocyclone in the technical solution of the present application, the spiral blades installed inside the cone will rotate following the liquid flow, thereby driving the rotating cylinder to rotate and accelerating the liquid flow. This can not only accelerate the speed of solution separation and classification, but also synchronously drive the bottom scraper to rotate, cleaning the particles adhering to the inner wall of the sand settling nozzle, preventing coarse particles from clogging inside the sand settling nozzle, and reducing the solution separation and classification efficiency.

[0015] 2. In the technical solution of the present application, a second mounting bracket is fixedly installed on the bottom side inside the cone, and the middle part of the second mounting bracket is rotatably connected to the bottom of the rotating cylinder. When the hydrocyclone separates and classifies the two-phase mixture, the spiral blades will drive the rotating cylinder to rotate outside the diversion cylinder. Combining with the rotational installation of the bottom of the rotating cylinder and the bottom of the second mounting bracket, the bottom of the rotating cylinder can be supported and limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes, and advantages of the present utility model will become more obvious:

[0017] Figure 1 It is the overall structural schematic diagram of a sand settling nozzle of a hydrocyclone of the present utility model;

[0018] Figure 2 It is the internal structural schematic diagram of the cone of a sand settling nozzle of a hydrocyclone of the present utility model;

[0019] Figure 3 It is the structural schematic diagram of the positioning ring of a sand settling nozzle of a hydrocyclone of the present utility model.

[0020] In the figure: 1. Desilting nozzle; 11. Cone; 12. Vortex chamber; 13. Feed inlet; 14. Overflow pipe; 2. First mounting bracket; 21. Second mounting bracket; 22. Guide cylinder; 23. Rotating cylinder; 24. Spiral blade; 25. Scraper; 3. Positioning ring; 31. Mounting clamp; 32. Connecting seat. Specific implementation mode

[0021] Please refer to Figures 1-3 , the present utility model provides a technical solution: a desilting nozzle of a hydrocyclone, including a desilting nozzle 1, a cone 11 is fixedly installed at the top of the desilting nozzle 1 through a flange, a vortex chamber 12 is fixedly installed at the top of the cone 11 through a flange, and a cleaning mechanism is installed inside the cone 11;

[0022] The cleaning mechanism includes a first mounting bracket 2 fixedly installed on the top side inside the cone 11, a guide cylinder 22 fixedly installed in the middle of the first mounting bracket 2, bearings fixedly installed on both outer walls of the guide cylinder 22, a rotating cylinder 23 fixedly installed on the outer shafts of the two groups of bearings, a spiral blade 24 fixedly installed on the outer wall of the rotating cylinder 23, and a scraper 25 fixedly installed at the bottom of the rotating cylinder 23. The scraper 25 is mutually attached to the inner wall of the desilting nozzle 1, and the spiral blades 24 gradually decrease from top to bottom.

[0023] In this technical solution, when the solution flows inside the hydrocyclone in a spiral shape, the spiral blade 24 installed inside the cone 11 will rotate following the liquid flow, thereby driving the rotating cylinder to rotate and accelerating the liquid flow. It can not only accelerate the speed of solution separation and classification, but also synchronously drive the bottom scraper 25 to rotate, clean the particles attached to the inner wall of the desilting nozzle 1, avoid coarse particles from clogging inside the desilting nozzle 1, and reduce the solution separation and classification efficiency.

[0024] In some technical solutions, a second mounting bracket 21 is fixedly installed at the bottom side inside the cone 11, and the middle of the second mounting bracket 21 is rotatably connected to the bottom of the rotating cylinder 23, which can support the rotating cylinder 23.

[0025] In this technical solution, when the hydrocyclone separates and classifies the two-phase mixed liquid, the spiral blade 24 will drive the rotating cylinder 23 to rotate outside the guide cylinder 22. Cooperating with the bottom of the rotating cylinder 23 being rotatably installed with the bottom of the second mounting bracket 21, it can support and limit the bottom of the rotating cylinder 23.

[0026] In some technical solutions, a positioning ring 3 is fixedly installed at the bottom of the rotating cylinder 23, and a mounting clamp 31 is fixedly installed on the outer wall of the positioning ring 3 through bolts, which can make the scraper 25 rotate together with the rotating cylinder 23. A connecting seat 32 is welded on the side wall of the mounting clamp 31, and the bottom of the connecting seat 32 is fixedly installed with the top of the scraper 25, which can fix the scraper 25.

[0027] In this technical solution, in cooperation with the positioning ring 3, the mounting clamp 31 and the connecting seat 32, the scraper 25 can be installed on the side wall of the rotating cylinder 23 and rotate together with the rotating cylinder 23.

[0028] In some technical solutions, a feed inlet 13 is connected and installed on the side wall of the vortex chamber 12, and an overflow pipe 14 is connected and installed through a flange at the top of the vortex chamber 12. The overflow pipe 14 is connected and installed with the top of the diversion pipe, and the fine particle solution can be discharged from the overflow pipe 14.

[0029] In this technical solution, the solution will flow spirally inside the hydrocyclone. Due to the particle size difference between the coarse particles and the fine particles, the centrifugal force, centripetal buoyancy force, fluid drag force, etc. they receive are different. Under the action of centrifugal sedimentation, the fine particles will be introduced into the overflow pipe 14 through the diversion pipe and discharged.

[0030] When a hydrocyclone sand nozzle is in use, it should be noted that the present invention is a hydrocyclone sand nozzle, and each component is a general standard component or a component known to those skilled in the art. Its structure and principle can be known by those skilled in the art through technical manuals or through conventional experimental methods.

[0031] During use, first, the two-phase mixed liquid is tangentially introduced into the hydrocyclone from the feed inlet 13 at a certain pressure. Then, the solution will flow spirally inside the hydrocyclone. Due to the particle size difference between the coarse particles and the fine particles, the centrifugal force, centripetal buoyancy force, fluid drag force, etc. they receive are different. Under the action of centrifugal sedimentation, most of the coarse particles are discharged through the hydrocyclone sand nozzle 1, and most of the fine particles are discharged through the overflow pipe 14. At the same time, when the solution flows spirally inside the hydrocyclone, the spiral blade 24 installed inside the cone 11 will rotate following the liquid flow, thereby driving the rotating cylinder to rotate and accelerating the liquid flow. This can not only accelerate the speed of solution separation and classification, but also synchronously drive the bottom scraper 25 to rotate, cleaning the particles adhering to the inner wall of the sand nozzle 1, preventing the coarse particles from blocking inside the sand nozzle 1 and reducing the solution separation and classification efficiency. At the same time, a second mounting frame 21 is fixedly installed at the bottom side inside the cone 11, and the middle of the second mounting frame 21 is rotatably connected to the bottom of the rotating cylinder 23. When the hydrocyclone separates and classifies the two-phase mixed liquid, the spiral blade 24 will drive the rotating cylinder 23 to rotate outside the guide cylinder 22. In cooperation with the rotatable installation of the bottom of the rotating cylinder 23 and the bottom of the second mounting frame 21, the bottom of the rotating cylinder 23 can be supported and limited.

Claims

1. A cyclone underflow nozzle, comprising an underflow nozzle (1), characterized in that: The top of the sand settling nozzle (1) is fixedly installed with a cone (11) through a flange, the top of the cone (11) is fixedly installed with a vortex chamber (12) through a flange, and a cleaning mechanism is installed inside the cone (11). The cleaning mechanism includes a first mounting frame (2) fixedly installed on the top side inside the cone (11), a flow guide cylinder (22) fixedly installed in the middle of the first mounting frame (2), bearings fixedly installed on both outer walls of the flow guide cylinder (22), a rotating cylinder (23) fixedly installed on the outer shafts of the two groups of bearings, a spiral blade (24) fixedly installed on the outer wall of the rotating cylinder (23), and a scraper (25) fixedly installed at the bottom of the rotating cylinder (23).

2. The desander nozzle of a hydrocyclone according to claim 1, characterized in that: The scraper (25) is in mutual fit with the inner wall of the sand settling nozzle (1), and the spiral blades (24) gradually decrease from top to bottom.

3. A cyclone sand sink nozzle according to claim 1, characterized in that: A feed inlet (13) is communicated and installed on the side wall of the vortex chamber (12), an overflow pipe (14) is communicated and installed on the top of the vortex chamber (12) through a flange, and the overflow pipe (14) is communicated and installed with the top of the guide pipe.

4. A cyclone sand sink nozzle according to claim 1, characterized in that: A second mounting frame (21) is fixedly installed on the bottom side inside the cone (11), and the middle of the second mounting frame (21) is rotationally connected with the bottom of the rotating cylinder (23).

5. A cyclone sand sink nozzle according to claim 1, characterized in that: A positioning ring (3) is fixedly installed at the bottom of the rotating cylinder (23), and a mounting clamp (31) is fixedly installed on the outer wall of the positioning ring (3) through bolts.

6. The desander nozzle of a hydrocyclone according to claim 5, characterized in that: A connecting seat (32) is welded on the side wall of the mounting clamp (31), and the bottom of the connecting seat (32) is fixedly installed with the top of the scraper (25).

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