阅读说明：本技术 浆液磨料水射流自动比例加料装置 (Slurry abrasive water jet automatic proportional feeding device ) 是由 李小军 袁瑞甫 秦玉成 程高宇 秦博 郭世昊 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种浆液磨料水射流自动比例加料装置,包括水砂搅拌桶、自动加砂装置和自动加水装置,水砂搅拌桶顶部设有桶盖,自动加砂装置设置在桶盖上,桶盖上设有下料口,自动加砂装置的出砂口开口朝下与下料口上下对应,自动加水装置的出水口与水砂搅拌桶上侧部连接。本发明结构简单,便于制造和安装,节省了磨料水射流过程加砂的工序,且操作简单,易于实现自动化控制,施工效率大大提升。在加砂过程中采用螺旋输送的方式进行磨料砂的输送,输送速度保持恒定,调节转速即可调节输送速度,同时也有效避免因水溅入储砂料斗中造成水砂混合物固结在储砂料斗中。(The invention discloses a slurry abrasive water jet automatic proportional feeding device which comprises a water sand stirring barrel, an automatic sand adding device and an automatic water adding device, wherein a barrel cover is arranged at the top of the water sand stirring barrel, the automatic sand adding device is arranged on the barrel cover, a discharging hole is formed in the barrel cover, a sand outlet opening of the automatic sand adding device faces downwards and vertically corresponds to the discharging hole, and a water outlet of the automatic water adding device is connected with the upper side part of the water sand stirring barrel. The invention has simple structure, convenient manufacture and installation, simple operation, easy realization of automatic control and great improvement of construction efficiency, and saves the procedure of adding sand in the abrasive water jet process. The conveying of abrasive sand is carried out in the mode of adopting spiral delivery at the sand feeding in-process, and conveying speed keeps invariable, and the conveying speed can be adjusted to the regulation rotational speed, also effectively avoids simultaneously causing the water sand mixture to solidify in the sand storage hopper because of the water spills into the sand storage hopper.)

1. Slurry abrasive water jet automatic proportion feeding device which characterized in that: including water sand agitator, automatic sand feeding device and automatic water feeding device, water sand agitator top is equipped with the bung, and automatic sand feeding device sets up on the bung, is equipped with the feed opening on the bung, and the sand outlet opening of automatic sand feeding device corresponds from top to bottom with the feed opening down, and the delivery port and the water sand agitator of automatic water feeding device are connected to the lateral part.

2. The slurry abrasive waterjet auto-proportional charging device of claim 1, wherein: the bottom of the water sand stirring barrel is provided with a bottom frame, the bottom of the bottom frame is provided with a supporting wheel, a barrel-shaped filter screen with an open top is arranged in the water sand stirring barrel, a supporting ring is arranged at the upper end of the barrel-shaped filter screen, the outer diameter of the supporting ring is larger than that of the barrel-shaped filter screen, the outer diameter of the barrel-shaped filter screen is equal to the diameter of the feed opening, the barrel-shaped filter screen penetrates through the feed opening and extends into the water sand stirring barrel, and the lower surface of the supporting ring is in surface contact with the upper surface of the barrel cover.

3. The slurry abrasive waterjet auto-proportional charging device of claim 2, wherein: the automatic sand adding device comprises a bracket arranged on a barrel cover, a gear box, a left bearing seat, a guide cylinder and a right bearing seat are sequentially arranged on the bracket from left to right, the guide cylinder is horizontally arranged, a sand storage hopper is arranged at the top of the guide cylinder, the sand storage hopper is of a rectangular pyramid shell structure with a large upper part and a small lower part, a rectangular opening communicated with a lower port of the sand storage hopper is arranged at the top of the guide cylinder, the sand outlet is arranged at the bottom of the right side of the guide cylinder, the sand outlet is connected with a guide pipe which is vertically arranged, the lower end of the guide pipe extends into the upper end of the barrel-shaped filter screen, a driving shaft is arranged in the guide cylinder in the same direction, a helical blade is arranged on the outer circumference of the driving shaft, the left end and the right end of the driving shaft are respectively connected in a left bearing seat and a right bearing seat through bearings in a rotating mode, the left end of the driving shaft is in coaxial transmission connection with a power output shaft of the gearbox, and the power input shaft of the gearbox is in transmission connection with a hydraulic motor.

4. The slurry abrasive waterjet auto-proportional charging device of claim 1, 2 or 3, wherein: the automatic water adding device comprises a water pump, a water injection pipe and a water flow control valve, a pipe joint is arranged on the upper side part of the water sand stirring barrel, a water outlet of the water injection pipe is connected with the pipe joint, the water flow control valve is arranged on the pipe joint, and the water pump is arranged at a water inlet of the water injection pipe.

5. The slurry abrasive waterjet auto-proportional charging device of claim 1, wherein: be equipped with the hydraulic pump on the chassis, the water inlet of hydraulic pump passes through the mortar pipe and is connected bottom the water sand agitator, and the three-way pipe is connected to the delivery port of hydraulic pump, and there is the thick liquid efflux pipe in the first export of three-way pipe, is equipped with the booster pump on the thick liquid efflux pipe, and the second export of three-way pipe is equipped with the governing valve and is connected with the mortar back flow, and the export of mortar back flow is connected with the side connection on the water sand agitator.

Technical Field

The invention belongs to the technical field of abrasive water jet, and particularly relates to an automatic proportional feeding device for slurry abrasive water jet.

Background

Abrasive water jet is widely applied to industries such as petroleum, coal, machinery and the like at present. The problem of continuous addition of abrasive in a water jet (this technique is also called slurry abrasive water jet) is solved by the utility model patent (grant publication No. CN 210099766U, CN 210099783U) and the invention patent (application nos. 201904867884, 2019104867992), which are also called slurry abrasive water jet. At present, the grinding materials in the slurry grinding material water jet are added with sand manually, and the water jet cutting effect is reduced in practical application due to the fact that the labor amount of workers is large, the sand adding is not uniform, the error of the sand adding proportion is large, and the proportion of the water-sand mixed slurry is unstable. Therefore, it is urgently needed to design a novel slurry abrasive automatic proportional feeding device to ensure that the water-sand mixing proportion is kept consistent in the water jet flow operation process, so that the manual labor is reduced, and the application effect is improved.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides the slurry abrasive water jet automatic proportional feeding device which is convenient to operate and high in automation degree, and ensures continuous and uniform sand feeding during operation so as to ensure the stable effect of the abrasive water jet.

In order to solve the technical problems, the invention adopts the following technical scheme: slurry abrasive water jet automatic proportion feeding device, including water sand agitator, automatic sand adding device and automatic water adding device, water sand agitator top is equipped with the bung, and automatic sand adding device sets up on the bung, is equipped with the feed opening on the bung, and the sand outlet opening of automatic sand adding device corresponds from top to bottom with the feed opening down, and the delivery port and the water sand agitator of automatic water adding device are connected to the side.

The bottom of the water sand stirring barrel is provided with a bottom frame, the bottom of the bottom frame is provided with a supporting wheel, a barrel-shaped filter screen with an open top is arranged in the water sand stirring barrel, a supporting ring is arranged at the upper end of the barrel-shaped filter screen, the outer diameter of the supporting ring is larger than that of the barrel-shaped filter screen, the outer diameter of the barrel-shaped filter screen is equal to the diameter of the feed opening, the barrel-shaped filter screen penetrates through the feed opening and extends into the water sand stirring barrel, and the lower surface of the supporting ring is in surface contact with the upper surface of the barrel cover.

The automatic sand adding device comprises a bracket arranged on a barrel cover, a gear box, a left bearing seat, a guide cylinder and a right bearing seat are sequentially arranged on the bracket from left to right, the guide cylinder is horizontally arranged, a sand storage hopper is arranged at the top of the guide cylinder, the sand storage hopper is of a rectangular pyramid shell structure with a large upper part and a small lower part, a rectangular opening communicated with a lower port of the sand storage hopper is arranged at the top of the guide cylinder, the sand outlet is arranged at the bottom of the right side of the guide cylinder, the sand outlet is connected with a guide pipe which is vertically arranged, the lower end of the guide pipe extends into the upper end of the barrel-shaped filter screen, a driving shaft is arranged in the guide cylinder in the same direction, a helical blade is arranged on the outer circumference of the driving shaft, the left end and the right end of the driving shaft are respectively connected in a left bearing seat and a right bearing seat through bearings in a rotating mode, the left end of the driving shaft is in coaxial transmission connection with a power output shaft of the gearbox, and the power input shaft of the gearbox is in transmission connection with a hydraulic motor.

The automatic water adding device comprises a water pump, a water injection pipe and a water flow control valve, a pipe joint is arranged on the upper side part of the water sand stirring barrel, a water outlet of the water injection pipe is connected with the pipe joint, the water flow control valve is arranged on the pipe joint, and the water pump is arranged at a water inlet of the water injection pipe.

Be equipped with the hydraulic pump on the chassis, the water inlet of hydraulic pump passes through the mortar pipe and is connected bottom the water sand agitator, and the three-way pipe is connected to the delivery port of hydraulic pump, and there is the thick liquid efflux pipe in the first export of three-way pipe, is equipped with the booster pump on the thick liquid efflux pipe, and the second export of three-way pipe is equipped with the governing valve and is connected with the mortar back flow, and the export of mortar back flow is connected with the side connection on the water sand agitator.

By adopting the technical scheme, water and sand can be continuously added into the water-sand stirring barrel in proportion in the working process of the abrasive water jet, and if a specially-assigned person is used for loading the sand in the operation process of the abrasive water jet, the sand adding proportion is not easy to control, and labor personnel are increased. The invention mainly aims to automatically and quantitatively add sand and water according to requirements in the operation process of the abrasive water jet.

The sand storage hopper of the automatic sand adding device is made of steel plates or polyethylene plates, and the sand storage hopper is determined by calculating the sand consumption of the abrasive water jet in unit time. The inside drive shaft that sets up of guide cylinder, the drive shaft excircle sets up helical blade, the inside abrasive material sand of fine grit of storage sand hopper, during operation drive the gearbox by hydraulic motor, the gearbox drives the drive shaft and rotates, helical blade on the drive shaft can be with the abrasive material sand in the storage sand hopper right transport in the guide cylinder, fall to the passage by the discharge gate downwards at last, fall into the tubbiness filter screen by the passage again, the abrasive material sand of fine grit passes the mesh of tubbiness filter screen and enters into the water sand agitator, meanwhile, the water pump pours into the water sand agitator into clean clear water through the water injection pipe, the pipe connector can close on tubbiness filter screen, the clear water jets to tubbiness filter screen through the coupling, can outwards rush with the abrasive material sand of tubbiness filter screen inside like this, improve the mixing efficiency of abrasive material sand and clear water. The sand adding amount can be adjusted by adjusting the rotating speed of the hydraulic motor, so that the condition that the rotating speed of the hydraulic motor is too high is avoided, the speed of the hydraulic motor driving the driving shaft to rotate is reduced by arranging the gearbox below the hydraulic motor, the cutting effect is prevented from being influenced by too large sand proportion caused by too high sand adding, and meanwhile, waste is avoided; the water adding amount into the water sand stirring barrel can be adjusted by adjusting the water flow control valve, and the water adding amount and the sand adding amount in the same time are the water-sand ratio.

The spiral groove formed between the spiral blades on the driving shaft is used as a main channel for conveying abrasive sand, the depth of the spiral groove and the distance between the spiral blades can be properly selected according to actual conditions, and uniform rotation is realized to keep the uniformity of the abrasive sand conveying. The grinding material sand is conveyed by the spiral blade in a rotating mode, so that the situation that the sand and water are mixed and bonded on the peripheral wall of the sand storage hopper or caking cannot be conveyed normally can be avoided.

After clean water and abrasive sand are uniformly stirred by a stirring device in the water sand stirring barrel, abrasive slurry is pumped out by a hydraulic pump through a slurry pipe and is sent to a high-pressure sprayer at a working position through a slurry jet pipe, and the abrasive slurry is further pressurized by a booster pump on the slurry jet pipe so as to improve the water jet effect. The large pump hydraulic pressure of the hydraulic pump can cause the abrasive slurry to be pumped out more than the actual requirement, at the moment, the regulating valve can be opened, and the redundant abrasive slurry flows into the water sand stirring barrel through the mortar return pipe.

The barrel-shaped filter screen is used for filtering larger particles in the abrasive sand or large particle impurities falling into the sand storage hopper in a coal mine so as to avoid the blockage of a high-pressure spray head at a working position due to the mixing of abrasive slurry. When the large granule impurity in the tubbiness filter screen is more, need take out tubbiness filter screen from the water sand agitator like this and just can remove the automation with sand device from the bung (through bolted connection between support and the bung), to lifting the support ring, take out whole tubbiness filter screen, install the tubbiness filter screen in the feed opening again after pouring out large granule impurity at last.

In summary, the invention has the following advantages:

(1) the invention has simple structure, convenient manufacture and installation and low manufacturing cost, and the supporting wheel can be conveniently moved in the using process.

(2) The invention saves the procedure of adding sand in the process of abrasive water jet, has simple operation, is easy to realize automatic control and greatly improves the construction efficiency.

(3) The invention adopts a spiral conveying mode to convey the abrasive sand in the sand adding process, the conveying speed is kept constant, the conveying speed can be adjusted by adjusting the rotating speed, and simultaneously, the water-sand mixture is effectively prevented from being solidified in the sand storage hopper due to the fact that water splashes into the sand storage hopper.

(4) The proportion of the water and the sand is convenient to adjust so as to adapt to different operation requirements. The sand adding procedure can at least reduce one person for adding sand during actual operation, the environment is generally severe when the abrasive water jet is used, particularly, the equipment is disordered in a coal mine tunnel, and the possibility of accidents caused by corresponding operators is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the automatic sand adding device in FIG. 1;

fig. 3 is a top view of fig. 2.

Detailed Description

As shown in fig. 1-3, the slurry abrasive water jet automatic proportional feeding device comprises a water sand stirring barrel 1, an automatic sand adding device 2 and an automatic water adding device, wherein a barrel cover 3 is arranged at the top of the water sand stirring barrel 1, the automatic sand adding device 2 is arranged on the barrel cover 3, a discharge opening 4 is arranged on the barrel cover 3, an opening of a sand outlet 16 of the automatic sand adding device 2 faces downwards and corresponds to the discharge opening 4 up and down, and a water outlet of the automatic water adding device is connected with the upper side of the water sand stirring barrel 1.

1 bottom of water sand agitator is equipped with chassis 5, and 5 bottoms of chassis are equipped with supporting wheel 6, are equipped with the open tubbiness filter screen 7 in top in the water sand agitator 1, and tubbiness filter screen 7 upper end mouth is equipped with support ring 8, and 8 external diameters of support ring are greater than tubbiness filter screen 7, and 7 external diameters of tubbiness filter screen equal to feed opening 4 diameters, and tubbiness filter screen 7 passes in feed opening 4 stretches into water sand agitator 1, and 8 lower surfaces of support ring and 3 upper surface contact of bung.

The automatic sand adding device 2 comprises a support 9 arranged on a barrel cover 3, a gear box 10, a left bearing seat 11, a guide cylinder 12 and a right bearing seat 13 are sequentially arranged on the support 9 from left to right, the guide cylinder 12 is horizontally arranged, a sand storage hopper 14 is arranged at the top of the guide cylinder 12, the sand storage hopper 14 is of a rectangular pyramid shell structure with a large upper part and a small lower part, a rectangular opening 15 communicated with a lower port of the sand storage hopper 14 is arranged at the top of the guide cylinder 12, a sand outlet 16 is arranged at the bottom of the right side of the guide cylinder 12, the sand outlet 16 is connected with a vertically arranged guide pipe 17, the lower end of the guide pipe 17 extends into the upper port of a barrel-shaped filter screen 7, a driving shaft 18 is coaxially arranged in the guide cylinder 12, a helical blade 19 is arranged on the outer circumference of the driving shaft 18, the left end and the right end of the driving shaft 18 are respectively connected in the left bearing seat 11 and the right bearing seat 13 in a rotating manner through bearings, and the left end of the driving shaft 18 is coaxially connected with a power output shaft of the gear box 10 in a transmission manner, the power input shaft of the gearbox 10 is in driving connection with a hydraulic motor 20.

The automatic water adding device comprises a water pump 21, a water injection pipe 22 and a water flow control valve 23, wherein a pipe joint 24 is arranged at the upper side part of the water sand stirring barrel 1, a water outlet of the water injection pipe 22 is connected with the pipe joint 24, the water flow control valve 23 is arranged on the pipe joint 24, and the water pump 21 is arranged at a water inlet of the water injection pipe 22.

Be equipped with hydraulic pump 25 on chassis 5, hydraulic pump 25's water inlet is connected through mortar pipe and water sand agitator 1 bottom, and the three-way pipe is connected to hydraulic pump 25's delivery port, and there is thick liquid efflux pipe 26 in the first export of three-way pipe, is equipped with booster pump 27 on the thick liquid efflux pipe 26, and the second export of three-way pipe is equipped with governing valve 28 and is connected with mortar back flow 29, and the export of mortar back flow 29 is connected with side on the water sand agitator 1.

During the working process of the abrasive water jet, water and sand can be continuously added into the water-sand stirring barrel 1 in proportion, and if a specially-assigned person is used for loading the sand during the operation process of the abrasive water jet, the sand adding proportion is not easy to control, and labor personnel are increased. The invention mainly aims to automatically and quantitatively add sand and water according to requirements in the operation process of the abrasive water jet.

The sand storage hopper 14 of the automatic sand adding device 2 is made of a steel plate or polyethylene plate material, and the sand storage hopper 14 is determined by calculating the sand consumption of the abrasive water jet in unit time. A driving shaft 18 is arranged in the guide cylinder 12, a helical blade 19 is arranged on the excircle of the driving shaft 18, the sand storage hopper 14 is filled with fine-grained abrasive sand, when in work, the hydraulic motor 20 drives the gear box 10, the gear box 10 drives the driving shaft 18 to rotate, the helical blade 19 on the driving shaft 18 can convey the abrasive sand in the sand storage hopper 14 to the right in the material guide cylinder 12, finally, the abrasive sand falls down to the material guide pipe 17 from the material outlet, then falls into the barrel-shaped filter screen 7 from the material guide pipe 17, the abrasive sand with fine granularity passes through the meshes of the barrel-shaped filter screen 7 and enters the water-sand stirring barrel 1, meanwhile, the water pump 21 injects clean water into the water sand stirring barrel 1 through the water injection pipe 22, the pipe interface can be close to the barrel-shaped filter screen 7, the clean water is emitted to the barrel-shaped filter screen 7 through the pipe joint 24, therefore, the grinding material sand in the barrel-shaped filter screen 7 can be flushed outwards, and the mixing efficiency of the grinding material sand and the clean water is improved. The sand adding amount can be adjusted by adjusting the rotating speed of the hydraulic motor 20, so that the condition that the rotating speed of the hydraulic motor 20 is too high is avoided, the gearbox 10 is arranged below the hydraulic motor 20 to reduce the rotating speed of the driving shaft 18 driven by the hydraulic motor 20, the cutting effect is prevented from being influenced by too large sand proportion caused by too high sand adding, and meanwhile, waste is avoided; the water adding amount into the water sand stirring barrel 1 can be adjusted by adjusting the water flow control valve 23, and the water adding amount and the sand adding amount in the same time are the water sand ratio.

The spiral groove formed between the spiral blades 19 on the driving shaft 18 is used as a main channel for conveying abrasive sand, the depth of the spiral groove and the distance between the spiral blades 19 can be properly selected according to actual conditions, and uniform rotation is realized to keep the uniformity of the conveyed abrasive sand. The abrasive sand is conveyed by the spiral blade 19 in a rotating mode, so that the situation that the sand and water are mixed and adhered to the wall of the periphery of the sand storage hopper 14 or the sand and water are agglomerated and cannot be conveyed normally can be avoided.

After clean water and abrasive sand are uniformly stirred by a stirring device in the water sand stirring barrel 1, abrasive slurry is pumped out by a hydraulic pump 25 through a slurry pipe and is sent to a high-pressure sprayer at a working position through a slurry jet pipe 26, and the abrasive slurry is further pressurized by a booster pump 27 on the slurry jet pipe 26 so as to improve the water jet effect. Since the pumping pressure of the hydraulic pump 25 is large, which causes the abrasive slurry to be pumped out more than actually needed, the control valve 28 is opened, and the excess abrasive slurry is convected into the water-sand stirring barrel 1 through the mortar return pipe 29.

The barrel-shaped filter screen 7 is used for filtering larger particles in the abrasive sand or large-particle impurities falling into the sand storage hopper 14 in a coal mine so as to avoid the abrasive slurry from being mixed into the high-pressure spray head of a working part to block. When large granule impurity in tubbiness filter screen 7 is more, need take out tubbiness filter screen 7 from the water sand agitator 1 like this and just can remove automatic sand feeding device 2 from bung 3 (through bolted connection between support 9 and the bung 3), lift up support ring 8, take out whole tubbiness filter screen 7, install tubbiness filter screen 7 in feed opening 4 after pouring out large granule impurity at last.

The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.