CN110900458A - Ultrahigh-pressure continuous pre-mixing abrasive jet system - Google Patents
Ultrahigh-pressure continuous pre-mixing abrasive jet system Download PDFInfo
- Publication number
- CN110900458A CN110900458A CN201911233781.8A CN201911233781A CN110900458A CN 110900458 A CN110900458 A CN 110900458A CN 201911233781 A CN201911233781 A CN 201911233781A CN 110900458 A CN110900458 A CN 110900458A
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- Prior art keywords
- valve
- abrasive
- pipe
- water
- pressure
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
- B24C1/045—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass for cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
Abstract
The invention discloses an ultrahigh pressure continuous pre-mixed abrasive jet system which comprises a hydraulic pump, wherein the outlet of the hydraulic pump is respectively connected with a first water pipe and a second water pipe through a shunt valve, the first water pipe is sequentially connected with a first flow regulating valve, a fourth one-way valve, a mixing chamber and a high-pressure nozzle in series, the second water pipe is communicated with the water inlet of a first electromagnetic reversing valve after flowing through the second flow regulating valve, two water outlets of the first electromagnetic reversing valve are communicated with two abrasive mixing devices after respectively flowing through the second electromagnetic reversing valve and the third electromagnetic reversing valve, and the two abrasive mixing devices can alternately perform automatic feeding, so that the continuous supply of abrasives is realized, and the pressure tank is not required to be disassembled and mixed abrasives are additionally arranged.
Description
Technical Field
The invention relates to the field of mixed abrasive jet systems, in particular to an ultrahigh-pressure continuous pre-mixed abrasive jet system.
Background
The abrasive water jet is developed on the basis of pure water jet, and compared with the pure water jet abrasive water jet, the abrasive water jet can achieve better effects on the aspects of rock breaking, steel plate cutting and the like under lower pressure. The abrasive jet flow is mainly divided into two types according to different abrasive mixing modes, namely a front mixed abrasive jet flow and a rear mixed abrasive jet flow. The post-mixed abrasive jet stream occurs earlier, and the abrasive mixing mode is to directly mix the abrasive with high-speed water flow so as to accelerate the abrasive. Due to the high tension on the surface of the water stream moving at high speed, the dispersed water drops around the water stream frequently collide to form a compact body surrounding the water stream, resulting in limited mixing of the water and the abrasive. In order to improve the mixing effect of the liquid-solid two-phase flow medium of the post-mixed abrasive jet, a pre-mixed abrasive mode is provided. The working mode is that the abrasive and water are mixed initially under low pressure and then accelerated by high-speed water flow. The energy transfer efficiency of the abrasive jet is much higher than that of the post-mix abrasive jet. So that relatively much research is now being directed to pre-mixed abrasive jets. However, due to the size of the volume of the pressure vessel and the relatively large amount of mixed abrasive needed during operation, the supply of mixed abrasive has always been a significant problem to be solved for the practical operation of the abrasive jet.
In the current research for solving the problem of supplying mixed abrasives, the continuous supply of the abrasives is mostly realized by adopting double-tank switching. The supply mode needs to be stopped, the pressure tank is disassembled and assembled, and the mixed solution of the grinding material and the water is added again. For the containers with strict sealing requirements such as the pressure tank, the sealing performance of the containers can be influenced by dismounting, and the service life of the containers can be reduced; not only has potential safety hazard but also has low use efficiency.
Disclosure of Invention
In view of the technical shortcomings, the invention aims to provide an ultrahigh pressure continuous pre-mixed abrasive jet system, which is characterized in that a pipe bracket fixed on a pressure container cover is connected through a high-pressure flexible steel pipe, high-pressure water acts on an independently designed sliding valve through a vertical pipe connected with the pipe bracket, the up-and-down movement of the sliding valve is controlled to realize automatic feeding, and a pressure tank is not required to be disassembled to be additionally loaded with mixed abrasives.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides an ultrahigh pressure continuous front mixing abrasive jet system, which comprises a hydraulic pump, wherein an outlet of the hydraulic pump is respectively connected with a first water pipe and a second water pipe through a shunt valve, the first water pipe is sequentially connected with a first flow regulating valve, a fourth one-way valve, a mixing chamber and a high-pressure nozzle in series, the second water pipe is communicated with a water inlet of a first electromagnetic reversing valve after flowing through the second flow regulating valve, two water outlets of the first electromagnetic reversing valve are respectively communicated with two abrasive mixing devices after flowing through two second electromagnetic reversing valves, each abrasive mixing device comprises an abrasive tank provided with an upper end cover, a shell and a bottom plate, a pipe bracket and a first sealing pipe thread cone joint are fixed at the bottom of the upper end cover, a vertical pipe and a second sealing pipe thread cone joint are arranged at the bottom of the pipe bracket, one end of the first sealing pipe thread cone joint is communicated with the second sealing pipe thread cone joint through an ultrahigh pressure flexible hose, the other end of the first sealing pipe thread taper joint penetrates out of the upper end cover and then is connected with a water outlet of a corresponding second electromagnetic directional valve, the middle part of the upper end cover is provided with a sliding valve and a feeding container which penetrate through the upper end cover, the top of the sliding valve extends into the feeding container, a boss of the sliding valve and a pipe support are fixedly connected with a spring therebetween, a vertical pipe extends into a middle hole of the sliding valve, two grinding material tanks are respectively communicated with a second one-way valve and a third one-way valve through a sealing pipe thread taper joint third arranged on a bottom plate of the grinding material tanks and finally converge in a mixing chamber, an ultrasonic liquid level sensor I, an ultrasonic liquid level sensor II and a first electromagnetic directional valve are arranged at the upper end, the second electromagnetic directional valves are respectively and electrically connected with the controller, the controller is electrically connected with the signal output unit, and the output end and the input end of the signal output unit are respectively and electrically connected with the output end and the input end of the first ultrasonic liquid level sensor and the output end and the input end of the second ultrasonic liquid level sensor.
Preferably, the pipe bracket is fixed to the bottom of the upper end cap by means of a countersunk screw.
Preferably, an inverted L-shaped flow passage is formed in the sliding valve, and first check valves are respectively installed at outlets at two ends of the inverted L-shaped flow passage.
Preferably, the vertical pipe is in interference fit with the central hole of the sliding valve through a first sealing ring.
Preferably, the ultrahigh-pressure mixing tank compresses and fixes the upper end cover, the shell and the bottom plate together through long bolts.
Preferably, the joints between the shell and the upper end cover and between the shell and the bottom plate are sealed by metal sealing gaskets and second sealing gaskets.
Preferably, the pipe support comprises a cage-shaped frame, the lower portion of the cage-shaped frame is connected with a hollow pipe support table through four rib plates, and the upper end and the lower end of the pipe support table are respectively fixed with a vertical pipe and are in threaded connection with a second sealing pipe threaded cone joint.
The invention has the beneficial effects that: the system improves the problem of the existing abrasive material supply halt, and the single tank can realize the supply of non-detachable abrasive materials; the single tank can be used as a subsystem, the double tanks can be matched and switched to realize continuous supply of non-stop grinding materials, the high-pressure flexible steel pipe is connected with the pipe support fixed on the pressure container cover, and the high-pressure water acts on the independently designed valve through the vertical pipe connected with the pipe support. The up-and-down movement of the sliding valve is controlled to realize automatic feeding, and the pressure tank is not required to be disassembled and the mixed abrasive is added.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic connection diagram of an ultra-high pressure continuous pre-mix abrasive jet system according to an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a cross-sectional view of a slide valve provided by an embodiment of the invention;
fig. 4 is a schematic structural diagram of a tube support provided in an embodiment of the invention.
Description of reference numerals:
1-a hydraulic pump; 2-a first electromagnetic directional valve; 3-a first one-way valve; 4-a first pipeline; 5-a second pipeline; 6-a supply container; 7-first flow control valve; 8-second flow control valve; 9-a mixing chamber; 10-a first sealed pipe thread taper joint; 11-ultrahigh pressure flexible hose; 12-a tube holder; 12-1-a cage frame; 12-2-tube support table; 13-second sealed pipe screw taper joint; 14-vertical pipes; 15-a slide valve; 15-1-boss 15-1; 15-2-inverted L-shaped flow channel; 15-3-mesopore; 16-sealing a pipe thread taper joint III; 17-a shunt valve; 18-an abrasive tank; 19-a high pressure nozzle; 20-long bolt; 21-a spring; 22-a controller; 23-a signal processing unit; 24-ultrasonic liquid level sensor one; 25-ultrasonic liquid level sensor two; 26-metal sealing gaskets; 27 — a first seal ring; 28-a second sealing ring; 29-countersunk head screw; 30-a second one-way valve; 31-a third one-way valve; 32-a fourth one-way valve; 33-second electromagnetic directional valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, an ultrahigh pressure continuous front mixing abrasive jet system comprises a hydraulic pump 1, an outlet of the hydraulic pump 1 is connected with a first water pipe 4 and a second water pipe 5 through a shunt valve 17, the first water pipe 4 is sequentially connected in series with a first flow regulating valve 7, a fourth check valve 32, a mixing chamber 9 and a high pressure nozzle 19, the second water pipe 5 is communicated with a water inlet of a first electromagnetic directional valve 2 after flowing through a second flow regulating valve 8, two water outlets of the first electromagnetic directional valve 2 are communicated with two abrasive mixing devices after flowing through two second electromagnetic directional valves 33 respectively, the abrasive mixing devices comprise an abrasive tank 18 provided with an upper end cover, a shell and a bottom plate, a pipe support 12 and a first sealing pipe thread cone joint 10 are fixed at the bottom of the upper end cover, a vertical pipe 14 and a second sealing pipe thread cone joint 13 are arranged at the bottom of the pipe support 12, one end of the first sealing pipe thread cone joint 10 is communicated with the second sealing pipe thread cone joint 13 through an ultrahigh pressure flexible hose 11, the other end of the first sealing pipe thread taper joint 10 penetrates through the upper end cover and then is connected with a water outlet of a corresponding second electromagnetic directional valve 33, the middle part of the upper end cover is provided with a sliding valve 15 and a feeding container 6 which penetrate through the upper end cover, the top of the sliding valve 15 extends into the feeding container 6, a boss 15-1 of the sliding valve 15 and a pipe support 12 are fixedly connected with a spring 21, a vertical pipe 14 extends into a middle hole 15-3 of the sliding valve 15, two grinding material tanks 18 are respectively communicated with a second one-way valve 30 and a third one-way valve 31 through a sealing pipe thread taper joint third 16 arranged on a bottom plate of the grinding material tanks 18 and finally converge in a mixing chamber 9, the upper end and the lower end of the outer part of the grinding material tank 18 are provided with a first ultrasonic liquid level sensor 24 and a second ultrasonic liquid level sensor 25, the first electromagnetic directional valve 2 and the second electromagnetic directional valve 33 are respectively electrically, the output end and the input end of the signal output unit 23 are respectively and electrically connected with the output end and the input end of the first ultrasonic liquid level sensor 24 and the second ultrasonic liquid level sensor 25.
The pipe bracket 12 is fixed to the bottom of the upper end cap by means of a countersunk screw 29.
An inverted L-shaped flow passage 15-2 is formed in the sliding valve, and first one-way valves 3 are respectively arranged at outlets at two ends of the inverted L-shaped flow passage 15-2.
The vertical pipe 14 is interference fitted with the central hole of the slide valve 15 by a first seal ring 27.
The ultrahigh-pressure mixing tank 18 is used for compressing and fixing the upper end cover, the shell and the bottom plate together through a long bolt 20.
The joints between the shell and the upper end cover and the bottom plate are sealed by metal sealing gaskets 26 and second sealing gaskets 28.
The pipe support 12 comprises a cage-shaped frame 12-1, the lower portion of the cage-shaped frame 12-1 is connected with a hollow pipe support table 12-2 through four rib plates, and a vertical pipe 14 and a threaded conical joint 13 of a second sealing pipe are respectively fixed at the upper end and the lower end of the pipe support table 12-2.
During the use, refer to fig. 1, establish about the abrasive material jar 18 at both ends for abrasive material jar one and abrasive material jar two, water is in two water routes through shunt valve 17 reposition of redundant personnel behind hydraulic pump 1 pressurization: the first water path 4 and the second water path 5 respectively flow into the mixing chamber 9 and the abrasive tank under the action of pressure (initially set to flow into the first abrasive tank), the sliding valve 15 moves downwards due to self gravity and elasticity of the spring 29, an abrasive inlet is opened, abrasive in the feeding container 6 enters the first abrasive tank 18, when the height of abrasive mixed liquid reaches the preset liquid level of the ultrasonic liquid level sensor 25 (lower limit), the controller 22 sends a signal to act by using the second electromagnetic reversing valve 33 communicated with the first abrasive tank, the first abrasive tank is communicated with high-pressure water, the high-pressure water flows through the vertical pipe 14 to jack the sliding valve 15 to close the abrasive inlet, and simultaneously, the high-pressure water starts to be injected into the first abrasive tank 18, and when the liquid level reaches the position of the ultrasonic liquid level sensor 24, the second electromagnetic reversing valve 33 acts to guide the high-pressure water. Primarily mixing high-pressure water with abrasive in the abrasive tank I to form abrasive slurry; when the mixed liquid of the water and the abrasive in the first abrasive tank reaches the upper limit of the ultrasonic liquid level sensor 24, the second electromagnetic directional valve 33 acts to cut off the high-pressure water flow. At this time, the pressure in the grinding material tank is relatively large, the second one-way valve 30 is forced to be opened, then the grinding material after the initial mixing enters the mixing chamber 9, and the high-pressure nozzle 19 continuously works.
After the abrasive tank is initially in operation, the system is stepped into normal operation. When the liquid level sensor 25 detects that the liquid level of the mixed abrasive slurry in the mixed abrasive tank II is lower than the lower limit, the controller 22 controls the first electromagnetic reversing valve 2 to act to cut off water supply of the abrasive tank I, switch on water supply of the abrasive tank II, and switch on another electromagnetic reversing valve III 33 at the right end connected with the abrasive tank II by high-pressure water; at the moment, the third electromagnetic directional valve 33 controls the high-pressure water to flow into the water tank, because the second abrasive tank is additionally provided with the abrasive materials, when the position of the abrasive materials reaches the liquid level of the ultrasonic liquid level sensor 25 (lower limit) on the second abrasive tank, the third electromagnetic directional valve 33 is opened to start the water supply of the second abrasive tank, and when the water level reaches the liquid level of the ultrasonic liquid level sensor 24 (upper limit), the third electromagnetic directional valve 33 acts to guide the high-pressure water into the water tank again; at the moment, the pressure in the grinding material tank is larger, the third one-way valve 31 is forced to be opened, then the grinding material after primary mixing enters the mixing chamber 9, and the high-pressure nozzle 19 continuously works; after ultrasonic wave level sensor 25 on abrasive tank one detected that an abrasive tank liquid level is less than the lower limit liquid level, first solenoid directional valve 2 action cuts off second water supply of abrasive tank and switches on the first water supply of abrasive tank, and second work of abrasive tank this moment, the abrasive tank is installed the abrasive material additional.
The process is repeated, high-pressure water and abrasive can be continuously introduced into the first abrasive tank and the first abrasive tank to be mixed, and accordingly non-disassembly and assembly supply of abrasive slurry is achieved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. An ultrahigh pressure continuous front mixing abrasive jet system is characterized by comprising a hydraulic pump, wherein a hydraulic pump outlet is respectively connected with a first water pipe and a second water pipe through a shunt valve, the first water pipe is sequentially connected with a first flow regulating valve, a fourth one-way valve, a mixing chamber and a high-pressure nozzle in series, the second water pipe is communicated with a water inlet of a first electromagnetic reversing valve after flowing through the second flow regulating valve, two water outlets of the first electromagnetic reversing valve are respectively communicated with two abrasive mixing devices after flowing through the second electromagnetic reversing valve, each abrasive mixing device comprises an abrasive tank provided with an upper end cover, a shell and a bottom plate, a pipe support and a first sealing pipe thread cone joint are fixed at the bottom of the upper end cover, a vertical pipe and a second sealing pipe thread cone joint are arranged at the bottom of the pipe support, one end of the first sealing pipe thread cone joint is communicated with the second sealing pipe thread cone joint through an ultrahigh pressure flexible hose, the other end of the first sealing pipe thread taper joint penetrates out of the upper end cover and then is connected with a water outlet of a corresponding second electromagnetic directional valve, the middle part of the upper end cover is provided with a sliding valve and a feeding container which penetrate through the upper end cover, the top of the sliding valve extends into the feeding container, a boss of the sliding valve and a pipe support are fixedly connected with springs therebetween, a vertical pipe extends into a middle hole of the sliding valve, two grinding material tanks respectively communicate with a second one-way valve and a third one-way valve through a sealing pipe thread taper joint third arranged on a bottom plate of the grinding material tanks and finally converge in a mixing chamber, the upper end and the lower end of the outer part of each grinding material tank are provided with a first ultrasonic liquid level sensor and a second ultrasonic liquid level sensor, the first electromagnetic directional valve and the second electromagnetic directional valve are respectively electrically connected with a controller, the controller is electrically connected with a signal output unit.
2. The system of claim 1, wherein the tube holder is secured to the bottom of the upper end cap by a countersunk screw.
3. The system of claim 1, wherein the sliding valve has an inverted L-shaped channel therein, and the outlets of the two ends of the inverted L-shaped channel are respectively provided with a first check valve.
4. The system of claim 1, wherein the vertical tube is an interference fit with the central bore of the sliding valve via a first seal ring.
5. The system of claim 1, wherein the ultra-high pressure mixing bowl is configured to hold the top head, housing, and base plate together by bolts.
6. The system of claim 1, wherein the joints between the housing and the top and bottom covers are sealed with a metal gasket and a second gasket.
7. The system of claim 1, wherein the pipe support comprises a cage-shaped frame, the lower portion of the cage-shaped frame is connected with a hollow pipe support platform through four rib plates, and a vertical pipe is fixed at the upper end and the lower end of the pipe support platform respectively and is in threaded connection with a second sealing pipe threaded cone joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233781.8A CN110900458A (en) | 2019-12-05 | 2019-12-05 | Ultrahigh-pressure continuous pre-mixing abrasive jet system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233781.8A CN110900458A (en) | 2019-12-05 | 2019-12-05 | Ultrahigh-pressure continuous pre-mixing abrasive jet system |
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| Publication Number | Publication Date |
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| CN110900458A true CN110900458A (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911233781.8A Pending CN110900458A (en) | 2019-12-05 | 2019-12-05 | Ultrahigh-pressure continuous pre-mixing abrasive jet system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112428162A (en) * | 2020-11-19 | 2021-03-02 | 中国矿业大学 | Continuous abrasive jet flow supply system free of disassembly and assembly |
| CN113843712A (en) * | 2021-08-16 | 2021-12-28 | 重庆交通大学 | Floater cutting device on water |
| CN114800292A (en) * | 2022-04-29 | 2022-07-29 | 江苏大田阀门制造有限公司 | Regulating valve of dry-wet dual-purpose energy-saving sand blasting equipment |
-
2019
- 2019-12-05 CN CN201911233781.8A patent/CN110900458A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112428162A (en) * | 2020-11-19 | 2021-03-02 | 中国矿业大学 | Continuous abrasive jet flow supply system free of disassembly and assembly |
| CN112428162B (en) * | 2020-11-19 | 2021-11-23 | 中国矿业大学 | Continuous abrasive jet flow supply system free of disassembly and assembly |
| CN113843712A (en) * | 2021-08-16 | 2021-12-28 | 重庆交通大学 | Floater cutting device on water |
| CN114800292A (en) * | 2022-04-29 | 2022-07-29 | 江苏大田阀门制造有限公司 | Regulating valve of dry-wet dual-purpose energy-saving sand blasting equipment |
| CN114800292B (en) * | 2022-04-29 | 2023-10-03 | 潜江市拓博石油机械设备有限公司 | Adjusting valve of dry-wet dual-purpose energy-saving sand blasting equipment |
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