CN215332734U

CN215332734U - Drilling fluid vacuum filter box

Info

Publication number: CN215332734U
Application number: CN202120495387.8U
Authority: CN
Inventors: 张永泽; 马卫国; 聂玲; 周佰刚; 李晨
Original assignee: Cangzhou Huayou Feida Solids Control Equipment Co ltd
Current assignee: Cangzhou Huayou Feida Solids Control Equipment Co ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-12-28
Anticipated expiration: 2031-03-09

Abstract

The utility model relates to a vacuum filter box for drilling fluid, which comprises a filter box body and a vacuum pipeline, wherein a vacuum filter disc is arranged at the upper end of the filter box body, and the vacuum filter disc is provided with filter disc meshes. The utility model has the beneficial effects that: the vacuum screening and filtering device is adopted to carry out solid-liquid separation on the drilling fluid and the pond sludge, so that the drilling cuttings separation efficiency of the drilling fluid can be improved, the solid-phase water content is reduced, harmful gases and volatile matters are pumped, the environment protection is facilitated, the structure of the vacuum filter disc is optimized, and the vacuum screening and filtering effect is ensured.

Description

Drilling fluid vacuum filter box

Technical Field

The utility model relates to a drilling fluid filtering device, in particular to a drilling fluid vacuum filter box.

Background

In oil drilling operations, the use of vibrating screens to separate solid phase particles from drilling fluids has several drawbacks, including: the water content of the separated solid-phase particles is higher, so that the loss of the drilling fluid is caused; harmful gases and organic volatile matters in the drilling fluid are directly discharged into the atmosphere, so that the environment is not protected; the splashing of drilling fluid and poor solid-liquid separation effect.

Disclosure of Invention

The utility model aims to provide a technical scheme of a drilling fluid vacuum filter box, which optimizes the structure of a vacuum screening device, improves the drilling cuttings separation efficiency of drilling fluid, reduces the water content of a solid phase, and pumps harmful gases and volatile matters.

In order to achieve the purpose, the technical scheme of the utility model is as follows: the utility model provides a drilling fluid vacuum filter box, includes filters box and vacuum pipe the upper end of filtering the box is equipped with the vacuum filter dish, the vacuum filter dish is equipped with the filter dish mesh.

Still further, a preferred filter disc mesh arrangement is one in which the vacuum filter disc is provided with a plurality of staggered rows of filter disc meshes.

Furthermore, in order to obtain a good mechanical structure, the meshes of the filter disc are through holes with a quadrangular pyramid shape with a contracted lower end.

Furthermore, a better filter disc mesh structure is that the thickness of the vacuum filter disc is 20 mm-30 mm, the taper of the filter disc mesh is 1:1.5, and the width of the mesh edge at the upper end of the vacuum filter disc is 1 mm-2 mm.

Furthermore, in order to avoid the contact friction between the mounting structure and the filter screen, a flange plate is arranged on the periphery of the vacuum filter disc, the upper end face of the flange plate is lower than the upper end face of the vacuum filter disc, a bolt hole is formed in the flange plate, the vacuum filter disc is fixed on the filter box body through a fixing bolt, and a nut of the fixing bolt is lower than the upper end face of the vacuum filter disc.

Furthermore, in order to improve the vacuum suction effect, a sealing gasket is arranged between the vacuum filter disc and the filter box body.

Furthermore, in order to smoothly discharge the liquid out of the vacuum filter box, the vacuum pipeline is arranged on the bottom surface of the filter box body, and the bottom surface of the filter box body is a conical surface.

The utility model has the beneficial effects that: the vacuum screening and filtering device is adopted to carry out solid-liquid separation on the drilling fluid and the pond sludge, so that the drilling cuttings separation efficiency of the drilling fluid can be improved, the solid-phase water content is reduced, harmful gases and volatile matters are pumped, the environment protection is facilitated, the structure of the vacuum filter disc is optimized, and the vacuum screening and filtering effect is ensured.

The utility model is described in detail below with reference to the figures and examples.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a view of the vacuum filter tray of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 1;

FIG. 5 is a partial enlarged view B of FIG. 4;

fig. 6 is a schematic diagram of the application of the present invention.

Detailed Description

Referring to fig. 1 to 5, the vacuum filter box for drilling fluid comprises a filter box body 10 and a vacuum pipeline 20, wherein a vacuum filter disc 30 is arranged at the upper end of the filter box body, and the vacuum filter disc is provided with filter disc meshes 31.

The vacuum filter disc is provided with a plurality of rows of filter disc meshes which are arranged in a staggered mode.

As shown in figure 5, the meshes of the filter disc are quadrangular pyramid-shaped through holes with the lower ends contracted.

The thickness T of the vacuum filter disc is 20 mm-30 mm, the taper alpha of the meshes of the filter disc is 1:1.5, and the width K of the meshes at the upper end of the vacuum filter disc is 1 mm-2 mm.

The periphery of the vacuum filter disc is provided with a flange plate 32, the upper end face of the flange plate is lower than the upper end face of the vacuum filter disc, the flange plate is provided with bolt holes 33, the vacuum filter disc is fixed on the filter box body through fixing bolts 11, and nuts 11a of the fixing bolts are lower than the upper end face 34 of the vacuum filter disc.

And a sealing gasket 40 is arranged between the vacuum filter disc and the filter box body.

The vacuum pipeline is arranged on the bottom surface 12 of the filtering box body, and the bottom surface of the filtering box body is a conical surface.

The first embodiment is as follows:

referring to fig. 1 to 4, a vacuum filter box for drilling fluid comprises a filter box body 10 and a vacuum pipeline 20, wherein a vacuum filter disc 30 is arranged at the upper end of the filter box body.

The filter box 10 is a square box, the bottom surface 12 of the filter box is a conical surface, the upper end of the filter box is provided with a flange 13, and the lowest end of the bottom surface of the filter box is provided with a pipeline hole 14.

The vacuum pipe 20 is provided on the bottom surface of the filter case and connected to the pipe hole 14. The vacuum pipeline is communicated with the filtering box body and vacuum equipment, and the vacuum equipment provides a vacuum source through a vacuum pump or a centrifugal fan.

The vacuum filter tray 30 is provided with filter tray mesh openings 31. The vacuum filter disc is provided with a plurality of rows of filter disc meshes which are arranged in a staggered way. In this embodiment, the thickness T =24mm of the vacuum filter disc. As shown in figure 4, the meshes of the filter disc are quadrangular pyramid-shaped through holes with the lower ends contracted, the taper alpha of the meshes of the filter disc is 1:1.5, the mesh edge 35 at the upper end of the vacuum filter disc is of a narrower linear structure, and the width K is 1 mm. The periphery of the vacuum filter disc is provided with a flange plate 32, the upper end surface 34 of the flange plate is lower than that of the vacuum filter disc, and the flange plate is provided with bolt holes 33.

The flange plate 32 of the vacuum filter disc is butted with the flange 13 of the filter box body, and the vacuum filter disc is fixed on the filter box body through the fixing bolt 11. After mounting, the nuts 11a of the fixing bolts are lower than the upper end surface 34 of the vacuum filter disc.

A sealing gasket 40 is arranged between the vacuum filter disc and the filter box body to avoid air leakage at the joint.

Referring to fig. 6, the vacuum filter box of this embodiment is used as a drilling fluid filtering device, which filters drilling fluid 51 through a moving filter screen 50, which filter screen 50 passes over a vacuum filter disc. Side guard plates 60 are also provided on both sides of the filter screen. The filter device separates solid-phase particles in the drilling fluid, the vacuum environment in the filter box body enables the drilling fluid to accelerate the filtering speed, and gas and organic volatile matters brought out by the drilling fluid are sucked into the filter box body together and then sent out through the vacuum pipeline.

One function of the vacuum filter tray is to support the filter mesh, which needs to be of a suitable thickness in order to have sufficient strength and rigidity to support the filter mesh.

Another function of the vacuum filter discs is to distribute the vacuum air flow more evenly over the upper end surface of the filter box body. In order to avoid the material storage in the upper end area of the vacuum filter disc, the mesh edge at the upper end of the vacuum filter disc adopts a narrow linear structure and conical filter disc meshes, so that the overall structural strength of the vacuum filter disc is ensured. The outlet at the lower end of the mesh of the filter disc with the conical structure is reduced, so that the vacuum filter disc realizes the function of uniform vacuum airflow, and the drilling fluid can smoothly flow into the filter box body through the vacuum filter disc.

The flange plate 32 of the vacuum filter disc is lower than the upper end face of the vacuum filter disc, and after the vacuum filter disc is in butt joint with the filter box body, the screw cap of the fixing bolt is lower than the upper end face of the vacuum filter disc, so that contact friction between the screw cap and the filter screen is avoided, and the safe operation of the filter screen is protected.

Claims

1. The vacuum filter box for the drilling fluid is characterized by comprising a filter box body and a vacuum pipeline communicated with a vacuum source, wherein a vacuum filter disc is arranged at the upper end of the filter box body and is provided with filter disc meshes; the vacuum filter disc is provided with a plurality of rows of filter disc meshes which are arranged in a staggered manner; the meshes of the filter disc are quadrangular pyramid-shaped through holes with the lower ends contracted.

2. The drilling fluid vacuum filter tank as claimed in claim 1, wherein the thickness of the vacuum filter disk is 20 mm-30 mm, the taper of the mesh of the filter disk is 1:1.5, and the width of the mesh at the upper end of the vacuum filter disk is 1 mm-2 mm.

3. The vacuum filter box for drilling fluid as claimed in claim 1, wherein the periphery of the vacuum filter disc is provided with a flange plate, the upper end surface of the flange plate is lower than the upper end surface of the vacuum filter disc, the flange plate is provided with bolt holes, the vacuum filter disc is fixed on the filter box body through fixing bolts, and nuts of the fixing bolts are lower than the upper end surface of the vacuum filter disc.

4. The drilling fluid vacuum filter tank of claim 1, wherein a gasket is arranged between the vacuum filter disc and the filter tank body.

5. The drilling fluid vacuum filter box of claim 1, wherein the vacuum pipe is arranged on the bottom surface of the filter box body, and the bottom surface of the filter box body is a conical surface.