CN110449084B

CN110449084B - Heavy powder auxiliary feeding device

Info

Publication number: CN110449084B
Application number: CN201910734617.9A
Authority: CN
Inventors: 周天明; 赵鹏; 刘志桐; 张鹏; 张虎山; 王兰
Original assignee: China National Petroleum Corp; Baoji Oilfield Machinery Co Ltd; CNPC National Oil and Gas Drilling Equipment Engineering Technology Research Center Co Ltd
Current assignee: China National Petroleum Corp; Baoji Oilfield Machinery Co Ltd; CNPC National Oil and Gas Drilling Equipment Engineering Technology Research Center Co Ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2022-04-08
Anticipated expiration: 2039-08-09
Also published as: CN110449084A

Abstract

The invention discloses a heavy powder auxiliary feeding device which comprises an observation cabin and a dust conveying pipe, wherein one end of the observation cabin is fixedly connected with a hopper opening of a mixing hopper, the other end of the observation cabin is connected with a first dust filtering cavity through a flange, the upstream of the first dust filtering cavity is fixedly connected with a second dust filtering cavity through a pipeline, a plurality of layers of dust blocking plates are arranged in the first dust filtering cavity, the second dust filtering cavity is a water-dissolving dust filtering device, the dust conveying pipe penetrates into the observation cabin, and the end part of the dust conveying pipe is suspended at the hopper opening of the mixing hopper. The heavy powder auxiliary feeding device conveys heavy powder to the hopper mouth of the mixing hopper through the ash conveying pipe, a large amount of dust is generated at the moment, the dust is filtered and adsorbed through the first dust filtering cavity and the second dust filtering cavity and is subjected to adsorption and filtration twice, the dust is completely adsorbed, and the effects of protecting the environment and preventing artificial dust aspiration are achieved.

Description

Heavy powder auxiliary feeding device

Technical Field

The invention belongs to the technical field of heavy powder dust removal, and particularly relates to a heavy powder auxiliary feeding device.

Background

In mud circulation system, need be incessant aggravate materials such as powder by mixing the funnel, conventional feeding mode is mostly that big bag material is reinforced, sits the big bag material that the pile up neatly in mixing the funnel top, and operating personnel need operate the punching bag device on the one hand, and on the other hand will assist reinforced, causes the operation inconvenient, and can produce dust pollution at reinforced in-process, has certain harm to environment and personnel. Except that big bag material is reinforced, use pneumatic mountain flour storage tank reinforced in addition, need set up a pans in compounding funnel top usually, bulky, and need be airtight with the mixing funnel, manufacturing cost is higher, and it is also comparatively inconvenient to maintain and use.

Disclosure of Invention

The invention aims to provide a heavy powder auxiliary feeding device, which solves the problems that in the prior art, the influence of powder dust on a human body in the heavy powder auxiliary feeding process is caused, and the existing device is high in manufacturing cost and inconvenient to maintain and use.

The invention adopts the technical scheme that the heavy powder auxiliary feeding device comprises an observation cabin and a dust conveying pipe, wherein one end of the observation cabin is fixedly connected with a hopper opening of a mixing hopper, the other end of the observation cabin is connected with a first dust filtering cavity through a flange, the upstream of the first dust filtering cavity is fixedly connected with a second dust filtering cavity through a pipeline, a plurality of layers of dust blocking plates are arranged in the first dust filtering cavity, the second dust filtering cavity is a water-soluble dust filtering device, the dust conveying pipe penetrates into the observation cabin, and the end part of the dust conveying pipe is suspended at the hopper opening of the mixing hopper.

The invention is also characterized in that:

the first dust filtering cavity comprises a closed inclined plate fixedly connected to the cavity opening, and the dust blocking plates are symmetrically distributed on the upper end of the closed inclined plate in a staggered mode along the radial direction of the inner cavity of the first dust filtering cavity.

The dust-blocking plate is two groups of inclined dust-filtering plates which are symmetrically and alternately distributed, and the surface of the dust-blocking plate is provided with a plurality of dust-filtering holes.

The second dust filtering cavity comprises a filtering pipe provided with a single-phase stop valve, one end of the filtering pipe is inserted into the first dust filtering cavity, the other end of the filtering pipe is inserted into the cavity containing the aqueous solution, a breather valve is arranged at the end part of the cavity connected with the filtering pipe, a water inlet hole is formed in the upper stream of the cavity, and a discharge hole is formed in the lower stream of the cavity.

The upper end and the lower end of the cavity are of rigid material structures, the middle of the cavity is provided with an elastic rubber shell, the elastic rubber shell is hermetically connected with the rigid material structures, and a spring is sleeved on a filter pipe inside the cavity.

One end of the ash conveying pipe close to the observation cabin is fixedly connected with the ash conveying pipe.

An observation hole is formed in the observation cabin, and transparent glass or a transparent plastic plate is arranged on the observation hole.

The invention has the beneficial effects that:

the invention relates to a heavy powder auxiliary feeding device which is provided with two filter cavities (specifically a first dust filtering cavity and a second dust filtering cavity) to adsorb and filter dust generated in the heavy powder mixing process one by one so as to prevent environmental pollution and prevent human bodies from sucking dust in work, wherein the first dust filtering cavity is a dry adsorption filter device, a plurality of layers of dust blocking plates are arranged to filter and adsorb one by one, when the filter effect of the first filter cavity is not good, the residual dust can enter the second dust filtering cavity to carry out secondary filtration, wherein, the second dust filtering cavity is a wet adsorption filter device, the residual dust is dissolved in water (wherein, the water solution is tap water and can be used by adding water for a plurality of times), and the dust is completely adsorbed by the two times of adsorption filtration, so that the effects of protecting the environment and preventing the human bodies from sucking dust by mistake are achieved, the device is convenient to use and convenient to disassemble, and has the characteristics of low manufacturing cost and convenient maintenance, the method comprises the following specific points:

1. the device is suitable for the dust-free requirement of the pneumatic heavy powder tank on the feeding of the mixing hopper;

2. the internal structure can filter and release pressure of the pressed dust;

3. the quick-open design meets the requirement of quick assembly and disassembly.

Drawings

FIG. 1 is a schematic structural view of a heavy powder auxiliary feeding device of the present invention;

FIG. 2 is a cross-sectional view of the dust barrier of FIG. 1;

FIG. 3 is a schematic structural diagram of a reducing nipple;

fig. 4 is a schematic view of the inner diameter-variable spring in fig. 3.

The dust-proof device comprises a dust-proof plate 1, a first dust filtering cavity 2, an inclined plate 3, an ash conveying pipe 4, an observation hole 5, a discharge hole 6, a second dust filtering cavity 8, a spring 9, a filter pipe 10, a water inlet hole 11, a breather valve 12, a one-way stop valve 13, an observation cabin 14, a reducing short section 15, a movable nut 151 and a reducing elastic sheet 152.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The invention relates to a heavy powder auxiliary feeding device, as shown in figure 1, when a pneumatic heavy powder tank is used in a slurry circulating system for ash conveying and slurry mixing operation, the feeding device is additionally arranged on a mixing funnel, the device mainly comprises an observation cabin 14 and an ash conveying pipe 4, one end of the observation cabin 14 is fixedly connected with a hopper opening of the mixing funnel, the other end of the observation cabin is connected with a first dust filtering cavity 2 through a flange, the flange connection is arranged for facilitating disassembly and later maintenance, the upstream of the first dust filtering cavity 2 is fixedly connected with a second dust filtering cavity 8 through a pipeline (specifically a filtering pipe 10), a plurality of layers of dust blocking plates 1 are arranged in the first dust filtering cavity 2, the second dust filtering cavity 8 is a water-soluble dust filtering device, the ash conveying pipe 4 penetrates into the observation cabin 14, and the end part of the ash conveying pipe 4 is suspended at the hopper opening of the mixing funnel. One end of the ash conveying pipe 4 close to the observation cabin 14 is fixedly connected with a reducing nipple 15. An observation hole 5 is formed in the observation cabin 14, the position of the observation hole 5 is opposite to the ash conveying pipe 4, and transparent glass or a transparent plastic plate is arranged on the observation hole 5; the section of the reducing short section 15 is an ellipse, and the pressure intensity of the heavy powder in the ash conveying pipe 4 can be changed, so that the pressure reduction and ash conveying effect when the powder enters the mixing hopper from the pneumatic heavy powder tank under pressure is met.

The first dust filtering cavity 2 is structurally characterized by comprising a closed inclined plate 3 welded at a cavity opening, and mainly has the advantages that floating dust slides into a material groove of the mixing funnel when falling to the bottom, and the dust blocking plates 1 are symmetrically and alternately distributed at the upper end of the closed inclined plate 3 along the radial direction of the inner cavity of the first dust filtering cavity 2.

The second dust filtering cavity 8 comprises a filtering pipe 10 provided with a one-way stop valve 13, one end of the filtering pipe 10 is inserted into the first dust filtering cavity 2, the other end of the filtering pipe is inserted into a cavity containing water solution (particularly tap water), a breather valve 12 is arranged at the end part of the cavity connected with the filtering pipe 10, a water inlet hole 11 is arranged at the upstream of the cavity, and a discharge hole 6 is arranged at the downstream of the cavity. The upper end and the lower end of the cavity are of rigid material structures, the middle of the cavity is provided with an elastic rubber shell, the elastic rubber shell is hermetically connected with the rigid material structures, and a spring 9 is sleeved on a filter pipe 10 inside the cavity. Wherein, take pressure gas to take a small amount of dust to get into back pressure release to the cavity, the dust is stayed in liquid, because the combined action of rubber housing and spring, make take pressure gas obtain abundant buffering, take pressure gas interval during, the spring can make the barrel reply the shape, reduces the impact, and gas distributes away by breather valve 12 afterwards, satisfies excessive pressure uninstallation, negative pressure simultaneously and keeps apart external requirement. Because the first dust filtering cavity 2 has been through the powder filtering and airflow guiding effects of the multiple groups of dust blocking plates 1, the air pressure is also reduced to a certain extent, and when reaching the second dust filtering cavity 8, the flow velocity is correspondingly reduced, so that the adsorption effect on the carried residual dust is increased. The cavity upper reaches are provided with inlet opening 11, and the low reaches of cavity are provided with bleed hole 6, conveniently add water and bleed, and one-way stop valve 13 is in order to prevent that the aqueous solution from inhaling in first dust filtering cavity 2 because of the reason of atmospheric pressure.

As shown in fig. 2, the specific structure of the dust-blocking plate 1 is two sets of inclined dust-filtering plates which are symmetrically and alternately distributed, and the dust-blocking plate 1 is a filter screen structure with a plurality of dust-filtering holes on the surface, so that when pneumatic charging is ensured, the air pressure is swept and flows along the flow channel of the dust-blocking plate 1, unstable high air pressure is allowed to be released and swept through the dust-filtering plate 1, and meanwhile, due to the installation of the dense-net dust-filtering plate, the dust-filtering plate also has a certain silencing effect, so that the dust with air pressure enters the second dust-filtering cavity 8 after being filtered and silenced when passing through each dust-filtering plate.

The structure schematic diagram of the reducing nipple 15 is shown in fig. 3 and comprises an upper end, a lower end and a middle movable nut 151, the position inside the reducing nipple corresponding to the movable nut 151 contains the reducing elastic sheet 152 shown in fig. 4, when reducing is needed, the movable nut 151 is rotated, the elastic sheet ribs of the end part of the reducing elastic sheet 152 inside the reducing nipple 15 are folded or separated, the diameter of the inner channel of the reducing nipple 15 can be changed, and the pressure of heavy powder is changed. (more specifically, the variable diameter resilient piece 152 is provided with a thread, the movable nut 151 is rotated along the thread by rotating the movable nut 151, and the movable nut 151 gradually presses or releases the bifurcated resilient rib at the end of the variable diameter resilient piece 152.)

The heavy powder auxiliary feeding device conveys heavy powder to the hopper mouth of the mixing hopper through the ash conveying pipe 4, a large amount of dust is generated at the moment, the dust is filtered and adsorbed through the first dust filtering cavity 2 and the second dust filtering cavity 8, and the dust is completely adsorbed after two times of adsorption and filtration, so that the effects of protecting the environment and preventing artificial dust suction by mistake are achieved.

Claims

1. The heavy powder auxiliary feeding device is characterized by comprising an observation cabin (14) and an ash conveying pipe (4), wherein one end of the observation cabin (14) is fixedly connected with a hopper opening of a mixing hopper, the other end of the observation cabin is connected with a first dust filtering cavity (2) through a flange, the upstream of the first dust filtering cavity (2) is fixedly connected with a second dust filtering cavity (8) through a pipeline, a plurality of layers of dust blocking plates (1) are arranged in the first dust filtering cavity (2), the second dust filtering cavity (8) is a water-soluble dust filtering device, the ash conveying pipe (4) penetrates into the observation cabin (14), and the end part of the ash conveying pipe (4) is suspended at the hopper opening of the mixing hopper;

the first dust filtering cavity (2) comprises a closed inclined plate (3) fixedly connected to a cavity opening, and the dust blocking plates (1) are symmetrically distributed on the upper end of the closed inclined plate (3) in a staggered mode along the radial direction of an inner cavity of the first dust filtering cavity (2);

the dust-resistant plate (1) is two groups of inclined dust-filtering plates which are symmetrically distributed in a staggered manner, and the surface of the dust-resistant plate (1) is provided with a plurality of dust-filtering holes;

the second dust filtering cavity (8) comprises a filtering pipe (10) provided with a one-way stop valve (13), one end of the filtering pipe (10) is inserted into the first dust filtering cavity (2), the other end of the filtering pipe is inserted into the cavity containing the aqueous solution, a breather valve (12) is arranged at the end part of the cavity connected with the filtering pipe (10), a water inlet hole (11) is arranged at the upstream of the cavity, and a discharge hole (6) is arranged at the downstream of the cavity;

the upper end and the lower end of the cavity are of rigid material structures, the middle of the cavity is provided with an elastic rubber shell, the elastic rubber shell is hermetically connected with the rigid material structures, and a spring (9) is sleeved on a filter pipe (10) inside the cavity.

2. The heavy powder auxiliary feeding device as claimed in claim 1, wherein a diameter-variable short joint (15) is fixedly connected to one end of the ash conveying pipe (4) close to the observation cabin (14).

3. The heavy powder auxiliary feeding device according to claim 1, wherein an observation hole (5) is formed in the observation cabin (14), and transparent glass or a transparent plastic plate is arranged on the observation hole (5).