CN111498229A

CN111498229A - Slurry feeding equipment and feeding method thereof

Info

Publication number: CN111498229A
Application number: CN202010370832.8A
Authority: CN
Inventors: 熊勇
Original assignee: Individual
Current assignee: Shandong Renhe New Material Technology Co ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2020-08-07
Anticipated expiration: 2040-05-06
Also published as: CN111498229B

Abstract

The invention discloses slurry feeding equipment and a slurry feeding method, wherein the slurry feeding equipment comprises a hopper, the hopper is embedded in a groove on the surface of a workbench, a conveying device connected with the groove is arranged on the surface of the workbench, the side wall of the groove, which is close to the direction of the conveying device, is an inclined surface, the inclined surface inclines towards the inner direction of the groove from top to bottom, and a blade is fixed on the inclined surface; a channel communicated with the groove is further arranged in the workbench, the channel is positioned on one side of the groove far away from the direction of the conveying device, a bag conveying mechanism is arranged in the channel, and the bag conveying mechanism is used for conveying empty bags from one end, close to the groove, of the channel to one end, far away from the groove, of the channel; a plurality of transmission rollers are arranged on two opposite side walls of the groove. The invention aims to provide slurry feeding equipment and a slurry feeding method, which are used for solving the problems that the slurry additive feeding process is seriously polluted and a packaging bag cannot be separated in the prior art, and achieving the purposes of reducing dust pollution, saving energy, protecting environment and separating the packaging bag.

Description

Slurry feeding equipment and feeding method thereof

Technical Field

The invention relates to the field of oil and gas development, in particular to slurry feeding equipment and a feeding method thereof.

Background

Mud, the drilling fluid, known as "blood from the well" is a very important part of the well completion process. In the process of preparing the drilling fluid, a large amount of additives are required to be added in both the preparation of new slurry and the preparation of glue solution. Most of the additives are bagged powder, and workers are required to manually carry the powder to a feeding port one by one, then manually break the bag, turn the bag to a state that the broken opening faces downwards, and discharge the powder from rancour to the feeding port. Dozens of kilograms of mud material are often moved to one bag, and the feeding amount is generally different from dozens of bags to hundreds of bags each time according to different well depths, so the feeding operation is a work with great physical consumption for mud workers. In order to reduce the manpower consumption of the charging operation, some automatic blanking devices are also provided in the prior art. However, such prior art techniques suffer from the following drawbacks: (1) the separation of powder and a packaging bag is generally realized through a vibrating screen, and the powder is also transmitted through a spiral feeding device; the high-speed vibration in the working process of the vibrating screen can raise a large amount of powder, so that the field environment is polluted, and a large amount of dust pollution exists in the air; the powder needs to be conveyed through a spiral feeding device, so that secondary pollution is caused, redundant power is wasted for secondary transmission, and the prior art does not meet the current requirements on energy conservation and environmental protection; (2) the powder and the packaging bags are separated through the vibrating screen, if the vibrating screen is horizontally arranged, the packaging bags after unloading can be always kept on the vibrating screen, and even can be horizontally arranged on the surface of the vibrating screen, so that the next bag of additive cannot be normally unloaded; if the vibrating screen is obliquely placed, the bag moves forwards all the time, the raw materials cannot be completely vibrated out of the bag and then are separated from the range of the vibrating screen, and a large amount of additives are wasted.

Disclosure of Invention

The invention aims to provide slurry feeding equipment and a slurry feeding method, which are used for solving the problems that the slurry additive feeding process is seriously polluted and a packaging bag cannot be separated in the prior art, and achieving the purposes of reducing dust pollution, saving energy, protecting environment and separating the packaging bag.

The invention is realized by the following technical scheme:

the mud feeding equipment comprises a hopper, wherein the hopper is embedded in a groove on the surface of a workbench, a conveying device connected with the groove is arranged on the surface of the workbench, the side wall of the groove, which is close to the direction of the conveying device, is an inclined surface, the inclined surface inclines towards the inner direction of the groove from top to bottom, and a blade is fixed on the inclined surface; a channel communicated with the groove is further arranged in the workbench, the channel is positioned on one side of the groove far away from the direction of the conveying device, a bag conveying mechanism is arranged in the channel, and the bag conveying mechanism is used for conveying empty bags from one end, close to the groove, of the channel to one end, far away from the groove, of the channel; and a plurality of transmission rollers are arranged on two opposite side walls of the groove.

Aiming at the problems that the pollution is serious in the slurry additive blanking process and the packaging bags cannot be separated in the prior art, the invention provides slurry feeding equipment. According to the scheme that a plurality of blades form a blade assembly side by side in the prior art, a plurality of parallel crevasses can be synchronously cut at the bottom of a bag, only the narrow part of the end part is connected between every two adjacent crevasses, when dozens of kilograms of powder is quickly discharged, the bag between the two adjacent crevasses is extremely easily torn off to form a large number of strips, and the strips can seriously interfere the normal and quick addition of the powder no matter the strips are attached to the surface of a vibrating screen or a filter screen. Therefore, only one blade is arranged on the inclined plane, only one crevasse can be formed, and the problem that the bag is broken into strips to interfere normal feeding is avoided. In addition, the blade is located the lateral wall inclined plane of sunken recess in this application, that is to say the blade is located the workstation inside, can not stand out outside, compares in prior art with the direct external mode of blade assembly or blade subassembly, and this application is showing and is improving the safety in utilization, has reduced the potential safety hazard of mud worker's operation. The blanking principle of this application does: (1) the bagged additive enters the hopper at the bottom of the groove, and the later-stage crevasses in the groove are opposite to the hopper at the bottom of the groove, so that the large-area support of a screen of a vibrating screen is avoided, the crevasses at the bottom of the bag fall down at the bottom of the groove, the powder in the drilling fluid additive is inevitably in a dry state, the flowability is extremely high, dozens of kilograms of powder fall down from one crevasses and quickly enter the hopper, the crevasses which are in the falling state can be automatically enlarged, and the quick and uniform blanking is facilitated on the premise that only one crevasse is provided; (2) the bagged additive is laid in the groove, the transmission rollers on the two sides continuously rotate and extrude the bag to push powder in the bag to the central part, and the bag filled with the additive continuously crawls through the transmission rollers on the two sides, so that the raw material is extruded. This application still sets up built-in passageway in the workstation, and the inclined plane was kept away from to passageway and recess one end is the intercommunication, accomplishes the back when a bag additive unloading, will empty the bag by the transmission cylinder of both sides and carry to the passageway is inside, and empty bag gets into the passageway after, carries the one end of keeping away from the recess to the passageway by sending a bag mechanism with empty bag from the passageway near the one end of recess, realizes thoroughly separating the wrapping bag, avoids influencing the effect of the quick unloading of next bag additive. Compared with the prior art: firstly, normal unloading can be realized to this application use built-in single blade structure, has all reduced the injured risk of mud worker from blade position and blade quantity, is showing to have reduced the operation potential safety hazard. Secondly, in the prior art, a vibrating screen and other equipment are used for shaking out powder, and a material bag paved on a screen of the vibrating screen lifts a large amount of dust to pollute the environment and air in the high-speed vibration process; and this application is when using, and the breach of pocket bottom directly drops on the hopper of recess bottom, therefore likepowder additive can directly get into in the hopper under the action of gravity, and the hopper top is sheltered from by bagged additive itself, consequently can't be escaped at unloading in-process dust, so show to have reduced environment and air pollution, is favorable to reducing the health harm to the mud worker. In addition, in the prior art, powder accumulated at the edge of the material bag is difficult to automatically discharge, and can be discharged only by manually shaking the material bag by a mud worker, so that in the existing automatic discharging structure, a large amount of additive is remained at the edge of each material bag, which causes waste; in the application, the powder on the edge of the bag can be effectively driven to be discharged in a discharging mode of enabling the bag to creep and deform through the transmission roller, so that waste is avoided, and the waste rate of the additive is reduced; compared with high-speed vibration in the prior art, the creeping motion from two sides can greatly reduce the probability of raising dust.

Furthermore, the transmission rollers are partially positioned inside the groove, the axes of all the transmission rollers on one side of the groove are coplanar, and the outer diameters of the two adjacent transmission rollers are different. Namely, the transmission roller is partially embedded in the side wall of the groove, and the other part of the transmission roller is positioned in the groove, so that the material bag entering the groove can be driven to creep in the rotating process; the external diameter of arbitrary two adjacent transmission cylinders varies for the both sides of additive in bags are uneven shape, through unsmooth and two rows of transmission cylinders of continuous pivoted, more effectual both sides to the additive in bags are pushed, just will be compelled to carry out the efficient wriggling at the in-process that the pocket still moved ahead in the recess, make the accumulational powder in both sides edge assemble to middle breach position fast, are favorable to quick unloading.

Further, the bag feeding mechanism comprises a slide rail fixed at the top end inside the channel, a slide block connected to the slide rail in a sliding manner, a telescopic rod fixed on the slide block, and a driving mechanism for driving the slide block to move along the slide rail; the axis of the telescopic rod is vertical, and two ends of the sliding rail are respectively flush with two ends of the channel. When the sliding block is positioned at one end of the sliding rail close to the groove, the telescopic rod moves downwards to play two roles, firstly, the telescopic rod can obstruct the communication position between the groove and the channel, so that the material bag in the blanking process cannot move forwards continuously, the front end of the material bag is blocked, and the transmission rollers on the two sides work continuously, so that the material bag can creep and deform to a greater extent, and the blanking speed is further improved; secondly, when the unloading is finished, after the pocket becomes empty bag, the telescopic link at this moment at first goes upward, lets out the intercommunication department between recess and the passageway, empty bag gets into in the passageway under the transport of transmission cylinder, later the telescopic link goes down again, hooks or holds the pocket, is moved by actuating mechanism drive slider, drives the pocket and moves to the slide rail and keeps away from the one end of recess, and this process has realized the separation and the aversion of empty bag, has thoroughly solved among the prior art problem that the packing bag can stop in the unloading original place and disturb the unloading of next bag additive.

Furthermore, the driving mechanism comprises a rack fixed on the workbench and parallel to the slide rail, a gear meshed with the rack, and a motor used for driving the gear to rotate, and the motor and the slide block are relatively fixed. The motor rotates to drive the gear to rotate, and the gear moves on the rack, so that the purpose of driving the sliding block to move linearly along the sliding rail is achieved. Wherein the moving direction of the sliding block can be switched by controlling the motor to rotate forwards and backwards.

Furthermore, two opposite side walls of the channel are provided with slide rails, the slide block is rod-shaped, and two ends of the slide block are respectively connected with the two slide rails in a sliding manner; a plurality of telescopic rods are uniformly distributed along the long axis direction of the sliding block. In the scheme, the sliding block is in a rod shape, and the plurality of telescopic rods are uniformly distributed along the long axis direction of the sliding block, so that in the blanking process, the plurality of telescopic rods can block the communication part between the groove and the channel, and sufficient blocking is provided for the material bag filled with raw materials; meanwhile, the two ends of the sliding rail are provided with the matched sliding rails, so that the action stability is obviously improved.

Further, the blade is in the shape of a right trapezoid, and the right-angle side of the right trapezoid faces the direction of the conveying device. The right-angle sides of the right-angle trapezoid face the direction of the conveying device, namely the right-angle sides of the right-angle trapezoid are perpendicular to the inclined plane of the side wall of the groove and face upwards. After entering the groove from the conveying device, the bagged additive quickly descends along the inclined plane and is instantaneously broken to form a large-depth crevasse when passing through the right-angle edge of the blade; in the same way, the hypotenuse of right trapezoid deviates from the direction of the conveying device, so that when the pocket breaks away from the blade, the blade can be gradually separated from the pocket through the transition of the hypotenuse, and the problem that the pocket is hooked by the blade and is not conveniently separated and pulled is avoided. Therefore, the blade has remarkable effect when breaking the material bag and separating from the material bag through the shape and the layout of the blade.

Furthermore, a plurality of shelves poles are erect at the hopper top, the bottom of telescopic link sets up electronic jack catch. A stop bar is arranged at the top end of the hopper and is used for providing proper blocking to prevent bagged additives with small volume from falling into the hopper. The gear rods can be distributed side by side or in a crossed way; the spacing is adaptively set according to the minimum bag type number of additives commonly used in the well site. The bottom end of the telescopic rod is provided with an electric claw which is used for grabbing an empty bag to drive the empty bag to move; at this time, the electric jaw may use any clamp capable of clamping the empty bag in the prior art.

Further, a first filter screen is arranged at the bottom end of the hopper, and the bottom end of the hopper is connected with the feeding pipe; the charging pipe is communicated with the negative pressure pipe and the liquid inlet pipe, and the negative pressure pipe is positioned above the liquid inlet pipe; the negative pressure intraductal second filter screen that sets up, the negative pressure union coupling negative pressure pump, the drilling fluid is extracted from the mud pit through the pump to the feed liquor pipe, and the drilling fluid loops through feed liquor pipe, filling tube backward flow to the mud pit. This scheme is passed through the negative pressure pump and is made the negative pressure in the hopper below, is favorable to the quick unloading of likepowder additive, also has fabulous effect to reducing the raise dust pollution simultaneously. The feed liquor pipe is used for the compounding, and at the unloading in-process, draws drilling fluid entering filling tube from the mud pond and circulates, and the powder whereabouts mixes with the drilling fluid, realizes that quick compounding is reinforced. This scheme realizes the quick interpolation of likepowder additive through the mode of negative pressure unloading and circulation compounding, compares in prior art and can improve unloading speed and reduce environmental pollution, avoids the powder to adhere to in a large number or pile up and cause the waste in the pipeline simultaneously.

The charging method based on the slurry charging equipment comprises the following steps:

(a) send a bag mechanism to be located initial station, initial station is: the bag feeding mechanism is positioned at one end of the channel close to the groove, a telescopic rod in the bag feeding mechanism extends downwards, and the end of the channel communicated with the groove is blocked; starting the conveying device and the conveying roller, placing the bagged additive on the workbench, and conveying the bagged additive to move towards the groove direction by the conveying device;

(b) the bagged additive enters the groove from the inclined plane and slides downwards under the action of gravity and the transmission rollers on the two sides, the bottom of the bagged additive is broken when the bagged additive passes through the blade, and raw materials begin to leak out from the bottom and enter the hopper; meanwhile, the bagged additive continues to slide downwards until the bagged additive is laid in the groove and is prevented from continuing to move forwards by the bag feeding mechanism;

(c) after the blanking is finished, the telescopic rod in the bag feeding mechanism contracts upwards, the empty bag is driven by the transmission rollers at two sides to partially enter the channel, the telescopic rod in the bag feeding mechanism extends downwards to hook or pull the end part of the empty bag, and then the bag feeding mechanism pulls the empty bag from one end of the channel close to the groove to one end of the channel far away from the groove;

(d) the telescopic rod is contracted upwards, and the bag feeding mechanism is returned to the initial station.

Further, the worker continuously places the bagged additive on the workbench, and when the former bag of raw materials is laid in the groove, the latter bag of raw materials is locally positioned on the inclined plane and pushes the former bag of raw materials.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. in the prior art, powder accumulated on the edge of a material bag is difficult to separate out of the bag, so that a large amount of additive remains on the edge of each belt, which causes waste; in the application, the powder on the edge of the bag can be effectively driven to be discharged in a discharging mode of enabling the bag to creep and deform through the transmission roller, so that waste is avoided, and the waste rate of the additive is reduced;

2. according to the mud slurry feeding device and the mud slurry feeding method, two rows of uneven and continuously rotating transmission rollers are used for more effectively pushing two sides of the bagged additive, the material bag is forced to efficiently creep in the process of moving forwards in the groove, so that powder materials accumulated on the edges of the two sides are quickly gathered to the middle broken opening position, and quick feeding is facilitated.

3. In the prior art, the powder is shaken out by using equipment such as a vibrating screen and the like, and the material bag is tiled on the screen mesh, so that an external blade assembly or a blade assembly with multiple blades arranged side by side is needed to be used.

4. In the prior art, a vibrating screen and other equipment are used for shaking out powder, and a material bag paved on a screen of the vibrating screen lifts a large amount of dust to pollute the environment and air in a high-speed vibrating process; and this application is when using, the direct tenesmus of the breach of pocket bottom is on the hopper of recess bottom, consequently likepowder additive can directly get into the hopper under the action of gravity in, and the hopper top is sheltered from by bagged additives itself, consequently can't be escaped at unloading in-process dust, compare with high-speed vibration among the prior art simultaneously, it also can reduce the probability that the dust is raised by a wide margin to wriggle from both sides, so this application is showing and is reducing environment and air pollution, be favorable to reducing the health harm to the mud worker.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an embodiment of the present invention;

FIG. 3 is a top view of an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a channel in an embodiment of the invention;

FIG. 5 is a top plan view of an embodiment of the present invention in operation;

FIG. 6 is a cross-sectional view of an embodiment of the present invention;

FIG. 7 is a top view of an embodiment of the present invention;

FIG. 8 is a top view of an embodiment of the present invention.

Reference numbers and corresponding part names in the drawings:

1-hopper, 2-workbench, 3-groove, 4-conveying device, 5-blade, 6-channel, 7-conveying roller, 8-slide rail, 9-slide block, 10-telescopic rod, 11-rack, 12-gear, 13-motor, 14-gear rod, 15-electric claw, 16-first filter screen, 17-feeding pipe, 18-negative pressure pipe, 19-liquid inlet pipe, 20-negative pressure pump, 21-second filter screen and 22-push rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1:

the mud feeding equipment shown in fig. 1 to 3 comprises a hopper 1, and is characterized in that the hopper 1 is embedded in a groove 3 on the surface of a workbench 2, a conveying device 4 connected with the groove 3 is arranged on the surface of the workbench 2, the side wall of the groove 3 close to the direction of the conveying device 4 is an inclined surface, the inclined surface inclines towards the inner direction of the groove 3 from top to bottom, and a blade 5 is fixed on the inclined surface; a channel 6 communicated with the groove 3 is further arranged in the workbench 2, the channel 6 is positioned on one side of the groove 3 away from the direction of the conveying device 4, a bag conveying mechanism is arranged in the channel 6, and the bag conveying mechanism is used for conveying empty bags from one end, close to the groove 3, of the channel 6 to one end, away from the groove 3, of the channel 6; a plurality of transmission rollers 7 are arranged on two opposite side walls of the groove 3. Wherein, the transmission rollers 7 are partially positioned inside the groove 3, the axes of all the transmission rollers 7 on one side of the groove 3 are coplanar, and the outer diameters of two adjacent transmission rollers 7 are not equal.

As shown in fig. 1 and 2, the blade 5 is a right trapezoid, the bottom of which is attached to the inclined surface, and the right side faces the direction of the conveyor 4.

In the embodiment, the size of the notch at the bottom of the groove 3 is 35-40 cm in length and 15-20 cm in width, and the long axis direction of the notch is parallel to the conveying direction of the conveying device 4 and the conveying roller 7, so that the size can meet the specification of a woven bag of 65 × 40cm commonly used for drilling fluid powdery additives, and the normal blanking of the material bag is ensured without directly dropping into a hopper.

Preferably, the transport roller may extend into the channel. Thereby being beneficial to ensuring that the empty bag after the unloading is finished can stably enter the channel.

Example 2:

on the basis of embodiment 1, as shown in fig. 4, a slurry feeding device includes a sliding rail 8 fixed at the top end inside a channel 6, a sliding block 9 connected to the sliding rail 8 in a sliding manner, a telescopic rod 10 fixed on the sliding block 9, and a driving mechanism for driving the sliding block 9 to move along the sliding rail 8; the axis of the telescopic rod 10 is vertical, and the two ends of the slide rail 8 are respectively flush with the two ends of the channel 6. The driving mechanism comprises a rack 11 which is fixed on the workbench 2 and is parallel to the sliding rail 8, a gear 12 which is meshed with the rack 11, and a motor 13 which is used for driving the gear 12 to rotate, wherein the motor 13 is relatively fixed with the sliding block 9. Two opposite side walls of the channel 6 are provided with slide rails 8, the slide block 9 is rod-shaped, and two ends of the slide block 9 are respectively connected with the two slide rails 8 in a sliding manner; a plurality of telescopic rods 10 are uniformly distributed along the long axis direction of the sliding block 9. A plurality of stop rods 14 are erected at the top end of the hopper 1, and an electric clamping jaw 15 is arranged at the bottom end of the telescopic rod 10. The embodiment illustrated in fig. 2 also has the above-described structure, and differs from the mounting method of fig. 4 only: in fig. 4, the rack 11 is meshed with the gear 12 on the outer side wall of the workbench 2, and the slide rail 8 penetrates through the side wall of the workbench 2 and is rotatably connected with the gear 12 through a bearing.

More preferred embodiments are: as shown in fig. 6, the slide rails 8 may extend outside the channel 6 so that when the empty bag is grasped by the powered jaws 15, the empty bag can be pulled outside the channel. If the site conditions allow, the distance that slide rail 8 extends in passageway 6 outsides can set up to be greater than the length of pocket even, can ensure like this that automatically drags the empty bag out the passageway, makes the automatic ground that drops to of empty bag.

The feeding method of this example is as follows:

(a) the bag feeding mechanism is positioned at an initial station, and the initial station is as shown in figure 2: the bag feeding mechanism is positioned at one end of the channel 6 close to the groove 3, and a telescopic rod 10 in the bag feeding mechanism extends downwards to block one end of the channel 6 communicated with the groove 3; starting the conveying device 4 and the transmission roller 7, placing the bagged additive on the workbench 2, and conveying the bagged additive to move towards the groove 3 by the conveying device 4;

(b) the bagged additive enters the groove from the inclined plane and slides downwards under the action of gravity and the transmission rollers 7 on the two sides, the bottom of the bagged additive is broken when the bagged additive passes through the blade 5, and raw materials begin to leak out from the bottom and enter the hopper 1; meanwhile, the bagged additive continues to slide downwards until the bagged additive is laid in the groove 3 and is prevented by the bag feeding mechanism from continuing to move forwards;

(c) after the blanking is finished, the telescopic rod 10 in the bag feeding mechanism is contracted upwards, the empty bag is driven by the transmission rollers 7 at two sides to partially enter the channel 6, the telescopic rod 10 in the bag feeding mechanism extends downwards to a position shown in figure 4 to hook or pull the end part of the empty bag, and then the bag feeding mechanism pulls the empty bag from one end, close to the groove 3, of the channel 6 to one end, far away from the groove 3, of the channel 6;

(d) the telescopic rod 10 is contracted upwards, and the bag feeding mechanism is returned to the initial station.

During specific work, the slurry worker continuously places the bagged additive on the workbench 2, as shown in fig. 5, when the former bag of raw material lies in the groove 3, the latter bag of raw material is partially positioned on the inclined plane and the former bag of raw material is pushed up; at this time, for the former bag of raw material, the front end is stopped by the plurality of telescopic rods 10 and can not move forward, the conveying rollers 7 on the two sides continuously extrude and convey the former bag of raw material, and the latter bag of raw material is pushed and extruded at the rear part, so that all the parts are stressed to creep and deform in situ, and the effect of automatically and rapidly pouring the raw material from the bottom is realized. Wherein the dashed lines in fig. 5 are schematic for the top of the hopper and the shaded portions in fig. 5 represent the previous and the next bags of material, respectively.

The feeding method of this example can also be optimized as follows:

send in bag mechanism's initial station, telescopic link 10 is in the state of shortening, after the pocket gets into the recess, because there is not stopping of telescopic link 10, in the pocket front end gets into passageway 6 gradually, sense behind the pocket entering passageway through arbitrary current response mode, make telescopic link 10 downwardly extending again, telescopic link 10 inserts on the pocket or grasps the pocket surface through the jack catch this moment, make pocket surface form the depressed area, not only can block going forward of continuation of pocket, can also avoid the pocket to roll back and drop in the hopper, thoroughly ensure that the pocket is firm. After the feeding is finished, the length of the telescopic rod is kept unchanged, and the sliding block is directly driven to move through the driving mechanism.

Example 3:

on the basis of any of the above embodiments, as shown in fig. 2, the bottom end of the hopper 1 is provided with a first filter screen 16, and the bottom end of the hopper 1 is connected with a feeding pipe 17; the feed pipe 17 is communicated with a negative pressure pipe 18 and a liquid inlet pipe 19, and the negative pressure pipe 18 is positioned above the liquid inlet pipe 19; a second filter screen 21 is arranged in the negative pressure pipe 18, the negative pressure pipe 18 is connected with a negative pressure pump 20, the liquid inlet pipe 19 extracts drilling fluid from the mud pit through the pump, and the drilling fluid flows back to the mud pit through the liquid inlet pipe 19 and the feed pipe 17 in sequence.

The negative pressure pump 20 is used for manufacturing the negative pressure below the hopper, so that the quick blanking of the powdery additive is facilitated, and the effect of reducing the dust pollution is also excellent. The feed liquor pipe is used for the compounding, and at the unloading in-process, draws drilling fluid entering filling tube from the mud pond and circulates, and the powder whereabouts mixes with the drilling fluid, realizes that quick compounding is reinforced. Wherein, the pump head pressure of the negative pressure pump 20 is controlled within the range of 0.9-0.95 atmospheric pressure, that is, only a slight negative pressure is provided to provide stable and effective guide for the powdery additive.

Preferably, the negative pressure tube 18 is inclined from top to bottom from the end away from the filler tube 17 to the end close to the filler tube 17. The arrangement ensures that the direction of negative pressure supply is not the same as the falling direction of the powder, ensures that the negative pressure only plays a role in guiding, and avoids the negative pressure from sucking the powder into the negative pressure pump. The powder material in this scheme descends fast under action of gravity and negative pressure guide, continues to drop downwards behind the negative pressure pipe position, mixes with the drilling fluid that the below is in the circulation state and gets back to in the mud pond, realizes quick compounding.

Example 4:

on the basis of any of the above embodiments, as shown in fig. 6, in this embodiment, the push rod 22 is embedded in the side wall of the inclined plane of the groove 3, and the push rod 22 is usually embedded in the side wall of the groove 3, so that the normal downward movement of the material bag along the inclined plane is not affected. After the additive in the previous bag material bag is unloaded, the push rod carries out a reciprocating motion to push the empty bag into the channel 6, so that the bag feeding mechanism can capture the empty bag and send the empty bag away. Although the push rod 22 structure is added in the embodiment, the stability and the automation degree during the operation of the application are improved. Of course, in this embodiment, the judgment of the completion of the unloading of the previous bag can be performed manually, and can be realized by arranging a weighing sensor at the stop lever 14 or other suitable positions, or even by arranging an induction sensor for inducing the raw material below the hopper, such as an infrared sensor, a laser sensor, and the like.

Example 5:

on the basis of the embodiment 2, the width of the groove 3 is gradually reduced from one end close to the conveying device 4 to one end close to the channel 6 in the embodiment; as shown in figure 7, the grooves 3 are gradually contracted inwards, so that the forward conveying trend of the material bag is always kept in the continuous blanking process of the material bag. The channel 6 is partly indicated in dashed lines in fig. 7.

A more preferred embodiment is shown in figure 8, with the slide rails 8 extending outwardly from within the channel 6 into the recess 3. This embodiment during operation, at the unloading in-process, just control slider 9 and remove to recess 3 in, descend telescopic link 10 to grasp the pocket upper surface through each electronic jack catch 15, later control slider 9 return gradually to the passageway 6 in, this in-process can drive the stable even entering channel of pocket through the removal of slider 9.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Further, the term "connected" used herein may be directly connected or indirectly connected via other components without being particularly described.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The mud slurry feeding equipment comprises a hopper (1) and is characterized in that the hopper (1) is embedded in a groove (3) in the surface of a workbench (2), a conveying device (4) connected with the groove (3) is arranged on the surface of the workbench (2), the side wall of one side, close to the direction of the conveying device (4), of the groove (3) is an inclined plane, the inclined plane inclines towards the inner direction of the groove (3) from top to bottom, and a blade (5) is fixed on the inclined plane; a channel (6) communicated with the groove (3) is further arranged in the workbench (2), the channel (6) is positioned on one side of the groove (3) far away from the direction of the conveying device (4), a bag conveying mechanism is arranged in the channel (6), and the bag conveying mechanism is used for conveying empty bags from one end, close to the groove (3), of the channel (6) to one end, far away from the groove (3), of the channel (6); and a plurality of transmission rollers (7) are arranged on two opposite side walls of the groove (3).

2. Slurry feeding device according to claim 1, characterized in that said transfer cylinders (7) are located locally inside the flute (3), the axes of all transfer cylinders (7) on one side of the flute (3) being coplanar and the outer diameters of two adjacent transfer cylinders (7) being unequal.

3. The slurry feeding device according to claim 1, wherein the bag feeding mechanism comprises a slide rail (8) fixed at the top end inside the channel (6), a slide block (9) connected to the slide rail (8) in a sliding manner, a telescopic rod (10) fixed on the slide block (9), and a driving mechanism for driving the slide block (9) to move along the slide rail (8); the axis of the telescopic rod (10) is vertical, and two ends of the sliding rail (8) are respectively flush with two ends of the channel (6).

4. A slurry feeding apparatus according to claim 3, wherein said driving mechanism comprises a rack (11) fixed on the working platform (2) and parallel to said sliding rail (8), a gear (12) engaged with said rack (11), and a motor (13) for driving said gear (12) to rotate, said motor (13) being relatively fixed with the sliding block (9).

5. The mud feeding device according to claim 3, wherein the two opposite side walls of the channel (6) are provided with slide rails (8), the slide block (9) is rod-shaped, and two ends of the slide block (9) are respectively connected with the two slide rails (8) in a sliding manner; a plurality of telescopic rods (10) are uniformly distributed along the long axis direction of the sliding block (9).

6. Mud feeding equipment according to claim 1, characterised in that the blades (5) are right-angled trapezoids, the legs of which are directed towards the conveyor (4).

7. Mud feeding equipment according to claim 1, characterized in that several blocking rods (14) are erected at the top end of the hopper (1), and electric claws (15) are arranged at the bottom end of the telescopic rod (10).

8. The mud feeding equipment according to claim 1, wherein a first filter screen (16) is arranged at the bottom end of the hopper (1), and the bottom end of the hopper (1) is connected with a feeding pipe (17); the feed pipe (17) is communicated with the negative pressure pipe (18) and the liquid inlet pipe (19), and the negative pressure pipe (18) is positioned above the liquid inlet pipe (19); set up second filter screen (21) in negative pressure pipe (18), negative pressure pump (20) are connected in negative pressure pipe (18), drilling fluid is extracted from the mud pit through the pump in feed liquor pipe (19), and drilling fluid loops through feed liquor pipe (19), filling tube (17) and flows back to the mud pit.

9. The charging method of a slurry charging apparatus according to any one of claims 1 to 8, comprising the steps of:

(a) send a bag mechanism to be located initial station, initial station is: the bag feeding mechanism is positioned at one end of the channel (6) close to the groove (3), a telescopic rod (10) in the bag feeding mechanism extends downwards to block one end of the channel (6) communicated with the groove (3); starting the conveying device (4) and the transmission roller (7), placing the bagged additive on the workbench (2), and conveying the bagged additive to move towards the groove (3) by the conveying device (4);

(b) the bagged additive enters the groove from the inclined plane and slides downwards under the action of gravity and the transmission rollers (7) at two sides, the bottom of the bagged additive is broken when the bagged additive passes through the blade (5), and raw materials begin to leak out from the bottom and enter the hopper (1); meanwhile, the bagged additive continues to slide downwards until the bagged additive is laid in the groove (3) and is prevented from continuing to move forwards by the bag feeding mechanism;

(c) after blanking is finished, a telescopic rod (10) in the bag feeding mechanism contracts upwards, the empty bag is driven by transmission rollers (7) on two sides to partially enter a channel (6), the telescopic rod (10) in the bag feeding mechanism extends downwards to hook or pull the end part of the empty bag, and then the bag feeding mechanism pulls the empty bag from one end, close to the groove (3), of the channel (6) to one end, far away from the groove (3), of the channel (6);

(d) the telescopic rod (10) is contracted upwards, and the bag feeding mechanism is returned to the initial station.

10. A method for feeding in accordance with claim 9, characterized in that the bagged additive is continuously placed on the table (2) and when the previous bag of material lies in the groove (3), the latter bag of material is locally on the slope and is pushed against the previous bag of material.