CN211029636U

CN211029636U - Post-mixed abrasive water jet sand pipe device for derusting and cleaning

Info

Publication number: CN211029636U
Application number: CN201921590633.7U
Authority: CN
Inventors: 李超; 余桧鑫; 贺占蜀
Original assignee: Zhengzhou University
Current assignee: Zhengzhou University
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-07-17
Anticipated expiration: 2029-09-24

Abstract

The utility model discloses a be used for rust cleaning to add abluent back mixed abrasive water jet sand pipe device, including the sand pipe, the mulling room, the abrasive material conveyer pipe, slope connecting hole and hole for water spraying. The water jet obtains high speed under the action of pump pressure, and the high-speed water jet flows out from the high-pressure nozzle and enters the interior of the sand pipe through the upper pipe orifice of the sand pipe, wherein the inner diameter of the sand pipe is about 2 times of the diameter of the abrasive, and the inner diameter of the abrasive conveying pipe is about 1.5 times of the diameter of the shot. Abrasive materials are fed into the sand mixing chamber from the abrasive material conveying pipe under the action of gravity and entrainment force formed by the high-speed water jet flow and are fully mixed with the high-speed water jet flow, after the abrasive materials are accelerated to a stable state under the pushing of the high-speed water jet flow, the high-speed water jet flow is discharged from water spray holes on the side surface of the sand pipe and is sprayed to the surface of a workpiece to achieve the cleaning effect, and the abrasive materials continue to move until the lower end opening of the sand pipe is sprayed out to achieve the der. The utility model discloses simple structure easily makes, has avoided the waste of efflux energy, realizes simultaneously that the rust cleaning adds abluent function.

Description

Post-mixed abrasive water jet sand pipe device for derusting and cleaning

Technical Field

The patent of the utility model relates to abrasive water jet abrasive material rust cleaning field, concretely relates to can install on inherent water jet device to a rust cleaning adds abluent back and mixes abrasive water jet sand pipe device.

Background

The abrasive water jet rust removal technology is to use high-speed water jet as power to push abrasive to accelerate and spray the abrasive to the surface of rusted metal, so as to realize the function of rust removal. In abrasive water jets, abrasive particles have higher energy and impact force than pure water jets due to their higher density and hardness. Abrasive water jets are further classified into two categories, namely pre-mixed abrasive water jets and post-mixed abrasive water jets, depending on how the water is mixed with the abrasive. The pre-mixed abrasive water jet can accelerate the abrasive more fully, but the energy loss is larger, and the rust removal and the cleaning do not need particularly large water speed and abrasive speed. The post-mixed abrasive water jet has small energy loss, and the key parts are very convenient to disassemble, so that the post-mixed abrasive water jet is an abrasive water jet which is widely applied at present. In current post-mix abrasive water jet devices, the abrasive and high-speed water jets are thoroughly mixed in a mulling chamber. The abrasive is pushed by the high-speed water jet in the sand pipe, after the speed reaches a stable state, water loses the effect, if the abrasive continuously moves in the water, unnecessary energy loss can be generated, when the abrasive water jet technology is used for treating rusty metal surfaces, the existing sand pipe device can only realize fixed-point rust removal and cleaning, large-area cleaning is difficult to realize, and great inconvenience is caused for scientific research theoretical analysis and practical application.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who solves does: the post-mixing abrasive water jet sand pipe device for derusting and cleaning has the advantages of simple structure, easiness in manufacturing, capability of being directly installed on the inherent water jet device, capability of ensuring that the abrasive realizes a derusting function and a large-area cleaning function.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a be used for rust cleaning to add abluent back mixed abrasive water jet sand pipe device which characterized in that: the device comprises a sand pipe, wherein the upper port of the sand pipe is connected to a fixed water jet device, the lower port of the sand pipe is a mixed jet outlet, and four rows of uniformly distributed water spray holes are formed in the outer side of the sand pipe; the water spray holes are used for cleaning the workpiece; a sand mixing chamber is arranged right above the sand pipe, the sand mixing chamber is used for mixing the abrasive and the high-speed water jet to provide energy for the abrasive, and a connecting hole is formed in the left side of the sand mixing chamber; the connecting hole is used for connecting the sand pipe and the abrasive conveying pipe; the upper port of the abrasive conveying pipe is connected with a feeding hose on an abrasive box of the inherent water jet device, and the lower port of the abrasive conveying pipe is connected with a sand pipe through a connecting hole on the left side of the sand mixing chamber.

Preferably, the inner diameter of the sand pipe in the device is about 2 times of the diameter of the abrasive, so that the abrasive is prevented from colliding in the sand pipe, and unnecessary energy loss is avoided.

Preferably, in the device, four rows of uniformly distributed water spraying holes are formed in the outer side of the sand pipe, and the four rows of water spraying holes can ensure that large-area cleaning is realized and the feasibility of processing is ensured.

Preferably, the included angle between the water spray holes on the outer side of the sand pipe and the horizontal direction is 45 degrees, and the water spray holes inclined at 45 degrees can minimize the energy loss of water to the greatest extent, so that the water is prevented from being directly or indirectly sprayed to operators, and the operation safety is ensured.

Preferably, the number of the water spraying holes on the outer side of the sand pipe is four, so that the water can be sprayed to the surface of rusty metal needing to be cleaned in a large area, and the function of cleaning the rusty metal in a large area is achieved.

Preferably, the diameter of the water jet holes on the outside of the sand pipe in the device should be about 0.8 times the diameter of the abrasive to avoid the abrasive from being ejected from the water jet holes.

Preferably, in the device, the left side of the sand mixing chamber is provided with an inclined connecting hole which forms an angle of 45 degrees with the horizontal direction, and the 45-degree inclined angle is beneficial to the grinding medium to flow into the sand mixing chamber under the action of gravity.

Preferably, the diameter of the inclined connecting hole on the left side of the sand mixing chamber is the same as the inner diameter of the abrasive conveying pipe, and is 1.5 times of the diameter of the abrasive, so that the abrasive can smoothly enter the sand mixing chamber to be mixed with the high-speed water jet.

Preferably, in the device, high-speed water jet flows into the sand mixing chamber from an upper port of the sand pipe, so that the inside of the sand mixing chamber is partially vacuumized; the high-speed water jet drives air in the inclined connecting hole on the left side of the sand mixing chamber to move so as to generate entrainment; under the combined action of the gravity and the entrainment force, the grinding material enters the sand mixing chamber from the grinding material conveying pipe and is fully mixed with the high-speed water jet; after the abrasive material is accelerated to a stable state, high-speed water jet is sprayed to the surface of rusted metal through the water spraying holes so as to achieve the aim of cleaning; the abrasive material continues to move in the sand pipe and is sprayed to the surface of rusted metal through the lower port of the sand pipe so as to achieve the purpose of rust removal.

Compared with the prior art, the beneficial effects of the utility model are that: the structure is simple, and the manufacture is easy; the manufacturing cost is low, and the device can be manufactured at lower cost; the device provides great convenience for scientific research and practical application in the field, ensures that the abrasive is smoothly ejected and impacts the surface of rusty metal to remove rust, and enables high-speed water jet to be ejected to the surface of the rusty metal in a large area to achieve the aim of cleaning; the device collects rust cleaning and washs in an organic whole, provides very big facility for handling rusty metal surface.

Drawings

FIG. 1 is a schematic diagram of a post-mixed abrasive water jet sand pipe device for rust removal and cleaning according to the present invention;

FIG. 2 is a schematic view of a three-dimensional structure of a post-mixed abrasive water jet sand pipe device for rust removal and cleaning according to the present invention;

FIG. 3 is a three-view of the structure of a post-mixed abrasive water jet sand pipe device for rust removal and cleaning provided by the utility model;

fig. 4 is a schematic structural diagram of a sand pipe and a sand mixing chamber for a post-mixed abrasive water jet sand pipe device for rust removal and cleaning provided by the utility model.

In the figure: 1. the sand mixing device comprises a sand pipe 2, a sand mixing chamber 3, an abrasive conveying pipe 4, an inclined connecting hole 5 and a water spraying hole.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example (b): as shown in fig. 2, a post-mixed abrasive water jet sand pipe device for rust removal and cleaning comprises a sand pipe (1), wherein the upper port of the sand pipe (1) is connected to a proper water jet device, which is a technology well known to those skilled in the art, the illustration of the present example does not show, the lower port of the sand pipe (1) is an abrasive water jet outlet, the upper part of the sand pipe (1) is a sand mixing chamber (2), the left side of the sand pipe is provided with an inclined connecting hole (4) having an angle of 45 degrees with the horizontal direction, the aperture of the inclined connecting hole is the same as the inner diameter of an abrasive conveying pipe (3) and is 1.5 times of the abrasive diameter, the lower port of the abrasive conveying pipe (3) is further matched with the sand mixing chamber (2) through the inclined connecting hole (4) on the left side of the sand mixing chamber (1), the upper port of the abrasive conveying pipe (3) is detachably and fixedly connected to the proper water jet, in the attached drawings of the embodiment, not shown, three rows of water spraying holes (5) which are uniformly distributed and have an included angle of 45 degrees with the horizontal direction are arranged on the outer side of the sand pipe (1) below the sand mixing chamber (2), four water spraying holes are arranged in each row, and the diameter of each row of water spraying holes (5) is about 0.8 time of that of the grinding material.

The working principle is as follows: when the utility model is implemented, the device is connected to the inherent water jet device, the high-speed water jet enters the sand pipe (1) through the upper port of the sand pipe (1), then the high-speed water jet flows into the sand mixing chamber (2) through the sand pipe (1), the high-speed water jet drives the air in the inclined connecting hole (4) on the left side of the sand mixing chamber (2) to move and further generates entrainment, the abrasive enters the sand mixing chamber (2) through the abrasive conveying pipe (3) under the combined action of the self gravity and the entrainment force and is fully mixed with the high-speed water jet, the speed of the abrasive is rapidly increased until reaching the stable state under the pushing of the high-speed water jet, then the high-speed water jet is jetted through the water jet hole (5), the rusty metal surface is impacted to reach the large-area cleaning effect, and the abrasive continues to move in the sand pipe (1) at high speed until the lower port of the sand pipe (1) is jetted to, so as to achieve the effect of rust removal.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a be used for rust cleaning to add abluent back mixed abrasive water jet sand pipe device which characterized in that: the device comprises a sand pipe (1), wherein the upper port of the sand pipe (1) is connected to a natural water jet device, the lower port of the sand pipe (1) is a mixed jet outlet, and four rows of uniformly distributed water spray holes (5) are formed in the outer side of the sand pipe (1); the water spray holes (5) are used for cleaning workpieces; a sand mixing chamber (2) is arranged right above the sand pipe (1), the sand mixing chamber (2) is used for mixing abrasive materials with high-speed water jet to provide energy for the abrasive materials, and an inclined connecting hole (4) is formed in the left side of the sand mixing chamber (2); the inclined connecting hole (4) is used for connecting the sand pipe (1) and the abrasive conveying pipe (3); the upper port of the abrasive conveying pipe (3) is connected with a feeding hose on an abrasive box of the inherent water jet device, and the lower port of the abrasive conveying pipe is connected with the sand pipe (1) through a connecting hole (4) on the left side of the sand mixing chamber.

2. The post-mixed abrasive water jet sand pipe device for rust removal and cleaning as claimed in claim 1, wherein: in the device, the inner diameter of the sand pipe (1) is about 2 times of the diameter of the abrasive, so that the abrasive is prevented from colliding in the sand pipe, and unnecessary energy loss is avoided.

3. The post-mixed abrasive water jet sand pipe device for rust removal and cleaning as claimed in claim 1, wherein: in the device, four rows of uniformly distributed water spraying holes (5) are formed in the outer side of the sand pipe (1).

4. The post-mixed abrasive water jet sand pipe device for removing rust and cleaning as claimed in claim 2, wherein: in the device, the included angle between the water spray holes (5) on the outer side of the sand pipe (1) and the horizontal direction is 45 degrees.

5. The post-mixed abrasive water jet sand pipe device for removing rust and cleaning as claimed in claim 2, wherein: the number of the water spraying holes (5) on the outer side of the sand pipe (1) is four in each row.

6. The post-mixed abrasive water jet sand pipe device for removing rust and cleaning as claimed in claim 2, wherein: the diameter of the water spray holes (5) on the outer side of the sand pipe (1) is about 0.8 time of the diameter of the grinding material.

7. The post-mixed abrasive water jet sand pipe device for rust removal and cleaning as claimed in claim 1, wherein: in the device, an inclined connecting hole (4) with an included angle of 45 degrees with the horizontal direction is formed in the left side of the sand mixing chamber (2).

8. The post-mixed abrasive water jet sand pipe device for rust removal and cleaning as claimed in claim 1, wherein: the diameter of the inclined connecting hole (4) at the left side of the sand mixing chamber (2) is the same as the inner diameter of the abrasive conveying pipe (3), and is 1.5 times of the abrasive diameter.