Multi-stage cyclone desanding and concentrating equipment

Abstract

The utility model provides multi-stage cyclone desanding and concentrating equipment. A first-stage desilting tank and a second-stage desilting tank are placed on a bracket; a first-stage cyclone communicated with the first-stage desilting tank is arranged at the top of the first-stage desilting tank; a plurality of second-stage cyclones communicated with the second desilting tank are arranged at the top of the second desilting tank A first valve and a second valve are respectively arranged at the bottoms of the first-stage desilting tank and the second-stage desilting tank; a pressure relief slurry discharge pipe is arranged at the top of the first-stage cyclone, a slurry inlet pipe is further arranged on the side face of the first cyclone, and a slurry inlet valve is arranged on the slurry inlet pipe; the top of the first-stage cyclone is communicated with each second-stage cyclone through a connecting pipe; the top of each second cyclone is communicated to a liquid outlet pipe; a communicating valve is arranged on the connecting pipe; a third valve is arranged at the end of the pressure relief and slurry discharge pipe, and a fourth valve is arranged at the end of the liquid outlet pipe. The desanding and concentrating device can better realize desanding and concentrating of the building slurry.

Description

Technical Field

[0001] The utility model belongs to the field of building construction, in particular to multi-stage cyclone sand removal and concentration equipment. Background Art

[0002] The sand removal and concentration process of construction mud is realized by pumping the construction mud into a special cyclone, and separating the sand and most of the powder from the mud according to the different relative densities of the sand, powder and clay in the mud. Currently, single-cone hydraulic cyclones are usually used in the liquid-solid separation industry. According to their design structure, they only have a good separation effect on particles with a very narrow distribution of particle sizes. However, for particle size classification tasks, and to ensure that the particle sizes of the two parts of the materials after separation can be accurately controlled, two-stage or multi-stage cyclones with different structures are required, which requires a lot of separation equipment and complex processes. Utility Model Content

[0003] In view of this, the utility model aims to provide a multi-stage cyclone sand removal and concentration device, which can better achieve sand removal and concentration of construction mud.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A multi-stage cyclone sand removal and concentration device comprises a support, a primary sand settling tank, and a secondary sand settling tank, wherein the primary sand settling tank and the secondary sand settling tank are placed on the support;

[0006] A first-stage cyclone is provided on the top of the first-stage sand settling tank and is connected thereto, and a plurality of second-stage cyclones are provided on the top of the second-stage sand settling tank and are connected thereto;

[0007] The bottoms of the primary sand settling tank and the secondary sand settling tank are respectively provided with valve No. 1 and valve No. 2;

[0008] A pressure relief slurry discharge pipe is provided on the top of the first-stage cyclone, and a slurry inlet pipe is provided on the side of the first-stage cyclone, and a slurry inlet penalty is provided on the slurry inlet pipe;

[0009] The top of the first-stage cyclone is connected to each of the second-stage cyclones through a connecting pipe; the top of each of the second-stage cyclones is connected to the liquid outlet pipe;

[0010] A connecting valve is arranged on the connecting pipe; a No. 3 valve is arranged at the end of the slurry discharge pipe, and a No. 4 valve is arranged at the end of the liquid discharge pipe.

[0011] Furthermore, the number of the secondary cyclones is two.

[0012] Furthermore, the two secondary cyclones are provided with a tee piece, and the connecting pipe is connected to the tee piece, thereby achieving communication between the first cyclone and the two secondary cyclones;

[0013] The tops of the two second cyclones are also provided with three-way pieces, and the liquid outlet pipes are connected to the three-way pieces.

[0014] Furthermore, two workstations are formed on the top of the bracket. The middle of the first workstation is used to install a first-stage sand settling tank, and the top of the first workstation is used to install a first-stage cyclone.

[0015] The middle of the second station is used to install the secondary sand settling tank, and the top of the second station is used to install the secondary cyclone.

[0016] Furthermore, the first-stage cyclone and the second-stage cyclone have the same structure, and the volume of the first-stage cyclone is greater than that of the second-stage cyclone.

[0017] Furthermore, the first-stage sand settling tank and the second-stage sand settling tank are designed at the same height, the top of the first-stage cyclone is higher than the top of the second-stage cyclone, and the inlet end of the connecting pipe is higher than the outlet end of the connecting pipe.

[0018] Compared with the prior art, the multi-stage cyclone sand removal and concentration equipment described in the utility model has the following advantages:

[0019] (1) The utility model multi-stage cyclone sand removal and concentration equipment can effectively realize the dehydration treatment of construction mud. The treated mud, sand and slag can meet the conditions for transportation by slag trucks. The filtrate is clear and transparent and can be recycled or discharged into pipes.

[0020] (2) The utility model multi-stage cyclone sand removal and concentration equipment can separate construction mud into wet mud sand with a relative density of about 1.70 and slurry water with a relative density of about 1.05. The wet mud sand can be basically quickly dried naturally. The treated slurry water is not only concentrated to 2 / 3 of the original mud volume, but can also be recycled as a material for subsequent bored pile construction. It has good applicability in the sand removal and concentration of construction mud. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1 It is a front view of the multi-stage cyclone sand removal and concentration equipment according to an embodiment of the utility model;

[0023] Figure 2 A top view of a multi-stage cyclone sand removal and concentration device according to an embodiment of the utility model;

[0024] Figure 3 It is a side view of the multi-stage cyclone sand removal and concentration equipment described in an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1. Bracket; 2. Primary sand settling tank; 21. No. 1 valve; 3. Secondary sand settling tank; 31. No. 2 valve; 4. Primary cyclone; 5. Secondary cyclone; 6. Pressure relief and slurry discharge pipe; 61. No. 3 valve; 7. Slurry inlet pipe; 71. Slurry inlet valve; 8. Connecting pipe; 81. Connecting valve; 9. Liquid outlet pipe; 91. No. 4 valve. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0031] Multi-stage cyclone sand removal and concentration equipment, such as Figure 1-Figure 3 As shown, it includes a support 1, a primary sand settling tank 2, and a secondary sand settling tank 3, wherein the primary sand settling tank 2 and the secondary sand settling tank 3 are placed on the support 1;

[0032] The top of the first-stage sedimentation tank 2 is provided with a first-stage cyclone 4 connected thereto, and the top of the second sedimentation tank is provided with a plurality of second-stage cyclones 5 connected thereto;

[0033] A first valve 21 and a second valve 31 are respectively provided at the bottom of the first-stage sand settling tank 2 and the second-stage sand settling tank 3;

[0034] A pressure relief slurry discharge pipe 6 is provided on the top of the first-stage hydrocyclone 4, and a slurry inlet pipe 7 is provided on the side of the first hydrocyclone, and a slurry inlet valve 71 is provided on the slurry inlet pipe 7;

[0035] The top of the first-stage cyclone 4 is connected to each of the second-stage cyclones 5 through a connecting pipe 8; the top of each of the second-stage cyclones is connected to a liquid outlet pipe 9;

[0036] A connecting valve 81 is provided on the connecting pipe 8 ; a No. 3 valve 61 is provided at the end of the pressure relief and slurry discharge pipe 6 , and a No. 4 valve 91 is provided at the end of the liquid outlet pipe 9 .

[0037] Preferably, the number of the secondary cyclones 5 is two.

[0038] The cyclone can be multi-stage or multiple in parallel. The cyclones of the same size are called cyclones of the same stage, and the cyclones of different sizes are connected in series. They can be designed and configured in multiple stages.

[0039] Preferably, the two secondary cyclones 5 are provided with a tee, and the connecting pipe 8 is connected to the tee, thereby achieving communication between the first cyclone and the two secondary cyclones 5;

[0040] A tee piece is also provided on the top of the two second cyclones, and the liquid outlet pipe 9 is connected to the tee piece.

[0041] Preferably, the top of the bracket 1 forms two workstations, the middle of the first workstation is used to install the primary sand settling tank 2, and the top of the first workstation is used to install the primary cyclone 4.

[0042] The middle of the second station is used to install the secondary sand settling tank 3, and the top of the second station is used to install the secondary cyclone 5.

[0043] Preferably, the primary cyclone 4 and the secondary cyclone 5 have the same structure, and the volume of the primary cyclone 4 is greater than that of the secondary cyclone 5 .

[0044] Preferably, the first-stage sand settling tank 2 and the second sand settling tank are designed at the same height, the top of the first-stage cyclone 4 is higher than the top of the second-stage cyclone 5 , and the inlet end of the connecting pipe 8 is higher than the outlet end of the connecting pipe 8 .

[0045] The structure of the cyclone is disclosed in patent application number 202122437117.4.

[0046] The mud enters the cyclone in a tangential manner through the cyclone inlet and starts the straight section, where the liquid pressure potential energy is converted into rotational kinetic energy; in the large cone section of the cyclone, the centrifugal acceleration is increased by reducing the turning radius, and the liquid and solid are gradually separated; through the transition straight section of the cyclone, the light phase vortex in the center of the cyclone is stabilized and the swing amplitude is reduced; at the connection between the transition straight section and the small cone section, different types of angles are designed to increase the speed and stability of the downward movement of small particles of sand, and reduce the chance of the central vortex of the cyclone carrying small solid particles to move upward; larger sand particles are discharged from the lower outlet of the cyclone, and the lower outlet of the cyclone can be connected to a sand settling tank to achieve intermittent discharge or continuous discharge; smaller clay particles and water are continuously discharged from the upper outlet of the cyclone; the dehydration and separation of the mud is completed through the above process.

[0047] Different specifications of cyclones are designed according to the feed rate and particle size components, and cyclones of different levels are connected in series to achieve a better separation effect. At the same time, cyclones of the same level can be connected in parallel to improve the processing efficiency of the equipment.

[0048] The device is used as follows:

[0049] 1. Use a pipeline with matching diameter to connect the feed pump to the slurry inlet, and open the slurry inlet valve 71, the connecting valve 81, the fourth valve 91 and the ventilation and pressure relief valves of the first-level sand settling tank 2 and the second-level sand settling tank 3; then close the third valve 61, and partially open the first valve 21 and the second valve 31;

[0050] The concept of partial opening is that the valve can adjust the flow rate (similar to the concept of a faucet). If the valve is opened smaller, the internal pressure will be higher, and the treatment effect will be better, but the treatment efficiency will be reduced, and vice versa.

[0051] 2. Start the feed pump, and the construction mud enters the cyclone from the slurry inlet at a certain initial velocity. After the gas in the sand settling tank is discharged, immediately close the venting and pressure relief valve, and control the sand discharge effect at the outlet by controlling the opening and closing size of valve No. 1 21 and valve No. 2 31;

[0052] 3. The lower outlet of valve No. 4 91 is low relative density slurry water, and the connection source can be selected according to the situation. If it is used for drilling, it can be connected to a clean water tank. If it is used for configuring circulating mud, it can be connected to a circulating mud tank.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Multi-stage cyclone sand removal and concentration equipment, characterized by: It includes a support, a primary sand settling tank, and a secondary sand settling tank, wherein the primary sand settling tank and the secondary sand settling tank are placed on the support; A first-stage cyclone is provided on the top of the first-stage sand settling tank and is connected thereto, and a plurality of second-stage cyclones are provided on the top of the second-stage sand settling tank and are connected thereto; The bottoms of the primary sand settling tank and the secondary sand settling tank are respectively provided with valve No. 1 and valve No. 2; A pressure relief slurry discharge pipe is provided on the top of the first-stage hydrocyclone, and a slurry inlet pipe is provided on the side of the first hydrocyclone, and a slurry inlet valve is provided on the slurry inlet pipe; The top of the first-stage cyclone is connected to each of the second-stage cyclones through a connecting pipe; the top of each of the second-stage cyclones is connected to the liquid outlet pipe; A connecting valve is arranged on the connecting pipe; a No. 3 valve is arranged at the end of the pressure relief slurry discharge pipe, and a No. 4 valve is arranged at the end of the liquid outlet pipe.

2. The multi-stage cyclone sand removal and concentration equipment according to claim 1 is characterized in that: The number of the secondary cyclones is two.

3. The multi-stage cyclone sand removal and concentration equipment according to claim 2 is characterized in that: The two secondary cyclones are provided with tees, and the connecting pipe is connected to the tees, thereby achieving communication between the first cyclone and the two secondary cyclones; The tops of the two second cyclones are also provided with three-way pieces, and the liquid outlet pipes are connected to the three-way pieces.

4. The multi-stage cyclone sand removal and concentration equipment according to claim 1 is characterized in that: The top of the bracket forms two workstations, the middle of the first workstation is used to install a first-stage sand settling tank, and the top of the first workstation is used to install a first-stage cyclone. The middle of the second station is used to install the secondary sand settling tank, and the top of the second station is used to install the secondary cyclone.

5. The multi-stage cyclone sand removal and concentration equipment according to claim 1 is characterized in that: The structure of the primary cyclone is the same as that of the secondary cyclone, and the volume of the primary cyclone is greater than that of the secondary cyclone.

6. The multi-stage cyclone sand removal and concentration equipment according to claim 5 is characterized in that: The first-stage sand settling tank and the second-stage sand settling tank are designed to have the same height, the top of the first-stage cyclone is higher than the top of the second-stage cyclone, and the inlet end of the connecting pipe is higher than the outlet end of the connecting pipe.

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