CN220241162U - Wet sand blasting gun - Google Patents

Abstract

The utility model discloses a wet sand blasting gun, which comprises a gun main body, wherein the gun main body is provided with a sand water main channel for communicating an external sand water pipeline and at least one air branch channel for communicating an external high-pressure air source, the sand water main channel comprises a flaring section and an extension section, and the inner diameter of the extension section is smaller than that of the flaring section and is communicated with the air branch channel. In the technical scheme of the utility model, the sand water main channel is directly communicated with the sand water supply pipeline, so that sand water with a certain concentration can be flexibly selected in the working process, the sand water concentration is conveniently controlled, and the processing requirement of the surface of a workpiece is met. Meanwhile, as the inner diameter of the sand-water main channel extension section is smaller than that of the flaring section, after the sand-water jet flows through the extension section from the flaring section, the flow speed can be increased, the pressure intensity is reduced, so that compressed air can be conveniently injected into the extension section, the sand-water jet injected with the compressed air has higher kinetic energy and impact force, the injection force of the sand-water jet is enhanced, and the working efficiency of the wet sand-blasting gun is improved.

Description

Wet sand blasting gun

Technical Field

The utility model relates to the technical field of sand blasting equipment, in particular to a wet sand blasting gun.

Background

A wet blasting gun is a device for surface treatment and cleaning that uses a mixture of high pressure water and sand particles to blast the surface of an object to remove dirt, oxides, coatings, or other unwanted substances.

Wet blasting guns typically include a sand inlet conduit, a high pressure water conduit, and a nozzle, the high pressure water conduit emitting a high pressure water jet to draw sand particles from the sand inlet conduit into the interior of the gun, then mixing to form a sand-water fluid, and finally emitting from the nozzle to the surface of a workpiece to process the workpiece.

However, the sand water concentration of the sand water fluid formed by the spray gun is difficult to control, and the sand water fluid has an influence on the surface quality of a workpiece. For example, a relatively high sand water concentration can produce a relatively rough surface, and obvious marks can be left on a workpiece, so that the processing requirements of the surface of the workpiece can not be met.

Disclosure of Invention

The utility model mainly aims to provide a wet sand blasting gun, so that the sand water concentration is convenient to control, and the processing requirement of the surface of a workpiece is met.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a wet blasting gun comprising a gun body formed with a main sand-water channel for communicating with an external sand-water pipeline and at least one air branch channel for communicating with an external high-pressure air source, the main sand-water channel comprising a flared section and an extended section, the extended section having an inner diameter smaller than the flared section and communicating with the air branch channel.

In some embodiments, the gun body comprises a housing assembly and at least one nozzle, the housing assembly and the nozzle are spliced to form the sand-water main channel, and a flaring section of the sand-water main channel is arranged on the nozzle;

the extension section of the sand-water main channel is partially arranged on the nozzle and partially arranged on the shell assembly; or the extension section of the sand-water main channel is arranged on the shell component.

In some embodiments, two nozzles are provided, and the two nozzles are provided on both front and rear sides of the housing assembly in the blasting direction.

In some embodiments, the housing assembly comprises a first housing and a second housing sleeved on the first housing, the first housing is provided with a nozzle, and the nozzle and the second housing are spliced to form the sand water main channel.

In some embodiments, the first housing is provided with an annular air cavity that is communicable with an external high pressure air source, the annular air cavity being disposed around the nozzle;

the second shell is provided with at least one air flow channel, one end of the air flow channel is communicated with the extension section of the sand-water main channel, the other end of the air flow channel is communicated with the annular air cavity, and the air flow channel and the annular air cavity form the air branch channel; and/or a sealing element is arranged between the first shell and the second shell.

In some embodiments, a plurality of air flow channels are provided on the circumferential side of the main sand-water channel and each of the air flow channels is disposed obliquely with respect to the main sand-water channel.

In some embodiments, the housing assembly further includes a third housing, a connection portion is protruding from a side of the second housing away from the first housing, and the third housing is sleeved on the connection portion.

In some embodiments, the connecting portion is provided with one of the nozzles, and the third housing is provided with a through hole, and the through hole faces the nozzle.

In some embodiments, the wet blasting gun further comprises a stand movably connected with the gun body for adjusting a blasting direction of the gun body.

The wet sand blasting gun further comprises a first connector for connecting an external sand water pipeline and a second connector for connecting an external high-pressure air source, wherein the first connector is communicated with the sand water main channel, and the second connector is communicated with the air branch channel.

In the technical scheme of the utility model, a sand-water main channel and at least one air branch channel are formed on the gun main body, one end of the sand-water main channel is used for being communicated with an external sand-water supply pipeline, and the other end of the sand-water main channel emits sand-water jet. The air branch channel is communicated with the extension section of the sand water main channel and can be used for being communicated with an external high-pressure air source. During operation, the sand water jet enters from one end of the sand water main channel, compressed air of the high-pressure air source is injected into the sand water jet from the air branch channel, and the sand water jet is ejected from the other end of the sand water main channel under the action of the compressed air so as to process a workpiece. Because the sand water main channel is directly communicated with the external sand water supply pipeline, sand water with a certain concentration can be flexibly selected, and the sand water concentration in the processing process is conveniently controlled, so that the processing requirement of the surface of a workpiece is met. Meanwhile, as the inner diameter of the sand-water main channel extension section is smaller than that of the flaring section, after the sand-water jet flows through the extension section from the flaring section, the flow speed can be accelerated, and the internal pressure of the sand-water jet is reduced, so that compressed air can be conveniently injected into the extension section from the air branch channel to pressurize the sand-water jet, and after the compressed air is injected into the sand-water, the sand-water jet has higher kinetic energy and impact force, the injection force of the sand-water jet is enhanced, and the working efficiency of the wet sand-blasting gun is improved.

Drawings

FIG. 1 is a schematic view of a wet blasting gun according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a wet blasting gun according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a gun body according to an embodiment of the present utility model;

FIG. 4 is a schematic view showing the internal structure of a wet blasting gun according to an embodiment of the present utility model;

FIG. 5 is an exploded view of a wet blasting gun according to an embodiment of the present utility model;

fig. 6 is a schematic structural view of the first housing and the nozzle according to an embodiment of the present utility model.

Description of the reference numerals

Reference numerals	Name of the name	Reference numerals	Name of the name
				1	Gun body	100	Sand water main road
101	Flaring segment	102	Extension section
				200	Air branch	201	Annular air cavity
202	Air flow channel	11	Housing assembly
				12	Nozzle	111	First shell body
112	Second shell	113	Third shell
				1121	Connecting part	1131	Through hole
2	Support frame	3	First joint
				4	Second joint	21	Bottom plate
22	Connecting plate

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

In the present utility model, the terms "disposed," "provided," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," etc. refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 6, an embodiment of the present utility model provides a wet type sand blasting gun, which includes a gun body 1, wherein the gun body 1 is formed with a sand water main channel 100 for communicating with an external sand water pipeline and at least one air branch channel 200 for communicating with an external high pressure air source, the sand water main channel 100 includes a flared section 101 and an extension section 102, and the inner diameter of the extension section 102 is smaller than that of the flared section 101 and is communicated with the air branch channel 200. Alternatively, the flared section 101 may be conically arranged and the extension section 102 may be straight cylindrical.

In this embodiment, the flared section 101 of the gun body 1 communicates with an external sand water pipeline, which can provide a sand water jet of a certain concentration for the gun body 1. For example, the sand water pipeline comprises a sand water pump and a sand water storage device, the sand water pump pumps sand water from the sand water storage device to the flaring section 101 of the sand water main pipeline 100 to form sand water jet, and the sand water jet exits from the extension section 102 to the surface of a workpiece so as to process the workpiece. Compared with the existing wet sand blasting gun, the wet sand blasting gun of the embodiment is directly communicated with the sand water pipeline, and the sand water pipeline provides sand water jet flow with a certain concentration for the sand water main channel 100, so that the wet sand blasting gun of the embodiment does not need high-pressure water to participate in work, can directly select sand water with a certain concentration according to requirements, is convenient to control the sand water concentration in the processing process, and avoids the influence on the surface quality of a workpiece due to overlarge or undersize sand water concentration in the working process, thereby meeting the processing requirements of the surface of the workpiece. It is appreciated that excessive sand water concentrations can increase the impact force and grinding effect of the sand particles, potentially leading to excessive wear and scoring of the workpiece surface, especially for soft or weak materials. However, too small a sand water concentration may reduce the cleaning effect and working efficiency of the sand blasting, especially for more refractory dirt, coating or oxide, the cleaning effect is poor, and too small a sand water concentration requires a longer time to complete the same work, greatly reducing the working efficiency.

Further, the gun body 1 of the present embodiment is further formed with at least one air branch 200, and the air branch 200 is used for injecting compressed air into the sand water jet to improve the working efficiency of the wet type sand blasting gun. Specifically, one end of the air branch 200 communicates with the extension 102 of the sand water main 100, and the other end is used to communicate with an external high pressure air source. The high pressure air source of this embodiment may provide compressed air, and may specifically be a compressor or other air compression device that compresses air to raise the air pressure and store it in a container to supply compressed air to the air branch 200. In this embodiment, the inner diameter of the extension section 102 of the sand-water main channel 100 is smaller than that of the flaring section 101, after the sand-water jet flows through the extension section 102 from the flaring section 101, the flow speed is increased, and the internal pressure of the sand-water jet is reduced, so that the air branch channel 200 can conveniently inject compressed air into the extension section 102 to pressurize the sand-water jet, and after the compressed air is injected into the sand-water, the sand-water jet has higher kinetic energy and impact force, and the injection force of the sand-water jet is enhanced, so that the working efficiency of the wet sand-blasting gun is improved.

With continued reference to fig. 4, in some embodiments, the gun body 1 includes a housing assembly 11 and at least one nozzle 12, the housing assembly 11 and the nozzle 12 being spliced to form a sand water main channel 100, a flared section 101 of the sand water main channel 100 being provided at the nozzle 12;

the extension section 102 of the sand-water main channel 100 is partially arranged on the nozzle 12 and partially arranged on the shell assembly 11; alternatively, the extension 102 of the sand water main channel 100 is provided to the housing assembly 11.

In this embodiment, the nozzle 12 is important in blasting applications, and can directly affect blasting effectiveness, wear resistance, and durability. The nozzle 12 is required to have excellent wear and corrosion resistance to withstand the impact and wear of the sand water jet. Illustratively, the nozzle 12 of the present embodiment is selected from cemented carbides, such as boron carbide. In this embodiment, the interior of the nozzle 12 and the interior of the housing assembly 11 form a sand water main channel 100. Specifically, the flared section 101 of the sand-water main channel 100 is located at the nozzle 12, while the extended section 102 of the sand-water main channel 100 is located at the housing assembly 11, with the nozzle 12 being disposed opposite the housing assembly 11 such that the flared section 101 is opposite the extended section 102, thereby forming the sand-water main channel 100. Alternatively, the flared section 101 and a portion of the extension 102 of the sand-water main channel 100 are located at the nozzle 12, the portion of the extension 102 of the sand-water main channel 100 is located at the housing assembly 11, and the nozzle 12 is disposed opposite the housing assembly 11 such that the extension 102 on the nozzle 12 is opposite the extension 102 on the housing assembly 11, thereby forming the sand-water main channel 100. Optionally, the wet blasting gun further comprises a first joint 3, which first joint 3 may be a threaded joint, the first joint 3 being for connecting an external sand water line. Specifically, one end of the first joint 3 communicates with the nozzle 12, and the other end is connected to an external sand water pipeline. The sand water jet provided by the sand water pipeline enters the gun main body 1 from the first joint 3, and the sand water jet sequentially passes through the nozzle 12 and the shell assembly 11 to be emitted to a workpiece so as to process the workpiece.

In some embodiments, two nozzles 12 are provided, and two nozzles 12 are provided on both front and rear sides of the housing assembly 11 in the blasting direction. In this embodiment, two nozzles 12 are disposed opposite to the housing assembly 11 on two sides of the housing assembly 11, in fig. 4, on two upper and lower sides of the housing assembly 11, such that the flared sections 101 on the nozzles 12 on two sides are opposite to the extension sections 102 of the housing assembly 11, thereby forming the sand water main channel 100. At this time, the sand-water main pipe 100 is composed of "flared section 101+extended section 102+flared section 101". The sand water jet enters from the flaring section 101 at one end of the sand water main channel 100, and after passing through the extension section 102, the sand water jet velocity is increased, so that the sand blasting velocity can be increased. When the sand water jet is sprayed out of the flaring section 101 at the other end of the sand water main channel 100, the spraying range is gradually changed, so that the spraying is more uniform, and the sand blasting effect is improved.

Referring to fig. 4 and 5, in some embodiments, the housing assembly 11 includes a first housing 111 and a second housing 112 sleeved on the first housing 111, the first housing 111 is provided with a nozzle 12, and the nozzle 12 and the second housing 112 are spliced to form the sand water main channel 100.

In this embodiment, the first housing 111 and the second housing 112 are detachably connected, specifically, the second housing 112 is sleeved on the first housing 111. Illustratively, the first housing 111 is provided with external threads on the peripheral side, and the second housing 112 is provided with internal threads on the inner side, so that the first housing 111 is screwed into the second housing 112 to realize detachable connection of the first housing 111 and the second housing 112. The nozzle 12 of the present embodiment is disposed in the first housing 111, and when the second housing 112 is sleeved on the first housing 111, the nozzle 12 and the inner cavity of the first housing 111 can form the sand water main channel 100. In this embodiment, the nozzle 12 is disposed on the first housing 111, that is, the nozzle 12 and the second housing 112 are disposed separately, which is convenient for cleaning, maintenance and replacement of the nozzle 12, and helps to improve the service life of the wet-type sand blasting gun. Alternatively, the first connector 3 is connected to the first housing 111, and the first connector 3 is illustratively a threaded connector, and the first connector 3 is screwed to the first housing 111. When the first connector 3 is connected to the first housing 111, the first connector 3 is communicated with the first housing 111, the nozzle 12, and the second housing 112 in this order.

Referring to fig. 4 and 6, in some embodiments, the first housing 111 is provided with an annular air chamber 201 that is communicable with an external high pressure air source, the annular air chamber 201 being disposed around the nozzle 12;

the second shell 112 is provided with at least one airflow channel 202, one end of the airflow channel 202 is communicated with the extension section 102 of the sand-water main channel 100, the other end of the airflow channel is communicated with the annular air cavity 201, and the airflow channel 202 and the annular air cavity 201 form an air branch channel 200; and/or a seal is provided between the first housing 111 and the second housing 112.

In this embodiment, the air branch 200 includes an annular air chamber 201 and an air flow channel 202 that are in communication, wherein the annular air chamber 201 is disposed on the first housing 111 and is disposed around the nozzle 12 on the first housing 111; the air flow channel 202 is provided in the second housing 112, and one end of the air flow channel 202 communicates with the extension 102 of the sand water main channel 100, and the other end communicates with the annular air chamber 201. Optionally, the wet blasting gun further comprises a second connector 4, which second connector 4 may be a pneumatic connector for connection to an external high pressure gas source. The second connector 4 is connected to the first housing 111 and communicates with the annular air chamber 201. Compressed air enters from the second joint 4, sequentially passes through the annular air cavity 201 and the air flow channel 202, and is injected into the sand water jet of the sand water main channel 100. Optionally, a plurality of air flow channels 202 are provided on the circumference side of the sand water main channel 100 and each air flow channel 202 is inclined with respect to the sand water main channel 100, wherein the air flow channels 202 are inclined, shortening the length of the air branch channel 200, helping to reduce the air consumption of compressed air. The seal of the present embodiment is used to seal the annular air chamber 201 to prevent the compressed air from leaking. The sealing member may be a sealing ring, which is disposed at the junction of the first housing 111 and the second housing 112, and is illustratively disposed outside of the end of the air flow channel 202 near the annular air chamber 201.

With continued reference to fig. 4 and 5, in some embodiments, the housing assembly 11 further includes a third housing 113, a connecting portion 1121 is protruding from a side of the second housing 112 away from the first housing 111, and the third housing 113 is sleeved on the connecting portion 1121.

Further, the connecting portion 1121 is provided with a nozzle 12, and the third housing 113 is provided with a through hole 1131, and the through hole 1131 faces the nozzle 12.

The second housing 112 of the present embodiment is provided with the nozzle 12. Specifically, the nozzle 12 is disposed at a connection portion 1121 of the second housing 112, the connection portion 1121 is protruded from the second housing 112, and the connection portion 1121 is detachably connected to the third housing 113. Illustratively, the third housing 113 is threadably coupled to the connection portion 1121, and when the nozzle 12 is installed, the nozzle 12 is inserted into the connection portion 1121, the third housing 113 is rotatably sleeved on the connection portion 1121, and the nozzle 12 is pressed against, thereby fixing the nozzle 12 in the connection portion 1121 of the second housing 112. In operation, the sand water jet sequentially passes through the first joint 3, the nozzle 12 in the first housing 111, the second housing 112, and the nozzle 12 in the second housing 112, and finally is ejected from the through hole 1131 of the third housing 113. The nozzle 12 in the second housing 112 in this embodiment is detachably connected, which facilitates cleaning, maintenance and replacement of the nozzle 12, and helps to improve the service life of the wet blasting gun.

Referring to fig. 2, in some embodiments, the wet blasting gun further includes a bracket 2, where the bracket 2 is movably connected with the gun body 1, and is used for adjusting the blasting direction of the gun body 1.

The stand 2 of the present embodiment is used to support the gun body 1 and adjust the blasting direction of the gun body 1. Specifically, the holder 2 is movably connected to the gun body 1. Illustratively, the bracket 2 includes a bottom plate 21 and connection plates 22 disposed on two sides of the bottom plate 21, the two connection plates 22 are movably connected with two side walls of the third housing 113, alternatively, the connection plates 22 are provided with arc-shaped connection grooves, the third housing 113 is provided with connection posts that can be inserted into the arc-shaped connection grooves, and the direction of blasting of the gun body 1 is adjusted by adjusting the positions of the connection posts in the arc-shaped connection grooves. Optionally, the bottom plate 21 is provided with an opening that can avoid the through hole 1131 on the third housing 113, so as to avoid shielding the sand jet during operation.

The foregoing is merely exemplary of the application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the application and are intended to be comprehended within the scope of the application.

Claims (10)

1. The wet sand blasting gun is characterized by comprising a gun main body, wherein the gun main body is provided with a sand water main channel used for communicating an external sand water pipeline and at least one air branch channel used for communicating an external high-pressure air source, the sand water main channel comprises a flaring section and an extension section, and the inner diameter of the extension section is smaller than that of the flaring section and is communicated with the air branch channel.

2. The wet blasting gun of claim 1, wherein the gun body comprises a housing assembly and at least one nozzle, the housing assembly and the nozzle being spliced to form the main sand-water channel, a flared section of the main sand-water channel being provided at the nozzle;

the extension section of the sand-water main channel is partially arranged on the nozzle and partially arranged on the shell assembly; or the extension section of the sand-water main channel is arranged on the shell component.

3. The wet blasting gun according to claim 2, wherein two of the nozzles are provided, and two of the nozzles are provided on both front and rear sides of the housing assembly in the blasting direction.

4. The wet blasting gun of claim 2, wherein the housing assembly comprises a first housing and a second housing sleeved on the first housing, the first housing is provided with the nozzle, and the nozzle is spliced with the second housing to form the sand water main channel.

5. The wet blasting gun of claim 4, wherein the first housing is provided with an annular air chamber communicating with an external high pressure air source, the annular air chamber being disposed around the nozzle;

the second shell is provided with at least one air flow channel, one end of the air flow channel is communicated with the extension section of the sand-water main channel, the other end of the air flow channel is communicated with the annular air cavity, and the air flow channel and the annular air cavity form the air branch channel; and/or a sealing element is arranged between the first shell and the second shell.

6. The wet blasting gun of claim 5, wherein a plurality of air flow passages are provided on a peripheral side of the main sand-water passage and each of the air flow passages is disposed obliquely with respect to the main sand-water passage.

7. The wet blasting gun of claim 4, wherein the housing assembly further comprises a third housing, wherein a connecting portion is provided on a side of the second housing away from the first housing, and the third housing is sleeved on the connecting portion.

8. The wet blasting gun of claim 7, wherein the connection portion is provided with one of the nozzles, and the third housing is provided with a through hole facing the nozzle.

9. The wet blasting gun of claim 1, further comprising a bracket movably coupled to the gun body for adjusting a blasting direction of the gun body.

10. The wet blasting gun of any of claims 1-9, further comprising a first connector for connecting an external sand water line, the first connector in communication with the sand water main and a second connector for connecting an external high pressure air source, the second connector in communication with the air branch.