Sand blasting water jet cutter

Abstract

The utility model relates to the technical field of sand blasting equipment, and particularly discloses a sand blasting water jet cutter, which comprises an air inlet component, an air outlet component and an air outlet component, the water inlet assembly is matched with the air inlet assembly to surround to form a water jet inner cavity; the air knife assembly is provided with an air inlet channel communicated to the air inlet gap, and a water inlet groove is formed in the surface, close to the water inlet assembly, of the air knife assembly; the water passing assembly is matched with the water inlet assembly to form two water inlet channels communicating with the water inlet groove in a surrounding mode. Wherein the two water inlet channels are symmetrically arranged relative to the air inlet channel; the lower portion of the water passing assembly extends to the position below the air knife assembly and is provided with a mixing channel communicating with the air inlet channel and the water inlet channel. The nozzle assembly is provided with a sand blasting gap communicated to the mixing channel; wherein the length sizes of the air inlet channel, the water inlet channel and the mixing channel are equal. The sand blasting water jet cutter provided by the utility model can effectively improve the uniformity of sprayed sand water, so that the sand blasting treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sandblasting equipment, in particular to a sandblasting water knife. Background Art

[0002] The wet sandblasting surface treatment process is a technology that uses a sand water pump to spray a mixture of sand and water onto the surface of a workpiece at a certain pressure, mainly for cleaning, rust removal or matte treatment. Compared with dry sandblasting, this process generates less dust and has less impact on the environment, but attention needs to be paid to preventing re-rusting caused by moisture. Usually, 1% - 15% of rust inhibitors and emulsifiers or soapy water are added to the water to prevent rusting. The wet sandblasting technology is widely used in surface treatment before electroplating and painting, internal and external degreasing and rust removal of mechanical and electrical parts, cleaning, polishing and rough machining of glass, metal, and molds, and many other fields.

[0003] The general wet sandblasting method in the industry is to use a spray disc nozzle for sandblasting. The sand water ejected has large fluctuations and poor uniformity, and the effect of the workpiece after sandblasting treatment is not uniform, with agglomerated patterns / stripe patterns.

[0004] Therefore, the utility model is committed to researching and developing a sandblasting water knife, which can improve the uniformity of the ejected sand water, and thus improve the sandblasting treatment effect.

[0005] The above information disclosed in this background section is only included to enhance the understanding of the background of the present disclosure, and thus may include information that does not form the prior art known to those of ordinary skill in the art at present. Summary of the Utility Model

[0006] An object of the utility model is to provide a sandblasting water knife, which can effectively improve the uniformity of the ejected sand water, and thus improve the sandblasting treatment effect.

[0007] To achieve the above object, the utility model provides a sandblasting water knife, comprising:

[0008] An air intake assembly, which is provided with an air intake chamber and an air intake gap communicating the air intake chamber to the external space of the air intake assembly;

[0009] A water intake assembly, which is installed at the bottom of the air intake assembly and cooperates with the air intake assembly to enclose and form a water knife inner cavity;

[0010] An air knife assembly, which is located in the water knife inner cavity, and is provided with an air inlet channel extending downward from top to bottom and communicating with the air intake gap, and a water inlet groove is arranged on the surface of the air knife assembly close to the water intake assembly;

[0011] Water passing component, the upper part of the water passing component is located between the air knife component and the water inlet component, and cooperates with the water inlet component to enclose and form two water inlet channels communicating with the water inlet tank; wherein, the two water inlet channels are symmetrically arranged with respect to the air inlet channel; the lower part of the water passing component extends below the air knife component and is provided with a mixing channel communicating with the air inlet channel and the water inlet channel;

[0012] Nozzle component, the nozzle component is located below the water inlet component and is provided with a sand blasting gap communicating with the mixing channel;

[0013] Wherein, the length dimensions of the air inlet channel, the water inlet channel, and the mixing channel are equal.

[0014] Optionally, the air intake component includes:

[0015] Air cavity cover, the air cavity cover is provided with the air intake cavity with an opening facing downwards;

[0016] Air intake partition, the air intake partition is located below the air cavity cover and is provided with the air intake gap communicating with the air intake cavity.

[0017] Optionally, an upper gasket is provided between the air cavity cover and the air intake partition, and a lower gasket is provided between the water inlet component and the nozzle component.

[0018] Optionally, the air cavity cover is locked to the top surface of the air intake partition by bolts from top to bottom, and the water passing component is locked to the bottom surface of the air intake partition by bolts from bottom to top.

[0019] Optionally, both the air knife component and the water passing component are made of tungsten steel.

[0020] Optionally, the surface of the air knife component close to the water inlet component is further provided with a T-shaped groove, and an internal insert for tightly connecting with the water inlet component is inserted in the T-shaped groove.

[0021] Optionally, the internal insert is provided with a plurality of threaded holes, and the water inlet component is provided with bolt holes corresponding to each of the threaded holes.

[0022] Optionally, the water passing component includes two oppositely arranged water passing blocks, the upper part of the water passing block is an inclined plate matching the air knife component, and the lower part is a vertical plate;

[0023] The lower part of the air knife component is inserted between the two inclined plates, and the air knife component cooperates with each inclined plate to form one of the water inlet channels.

[0024] Optionally, the width dimension of the air inlet channel is 1.1 mm to 1.3 mm, the width dimension of the water inlet channel is 0.4 mm to 0.6 mm, and the width dimension of the mixing channel is 1.8 mm to 2.0 mm; the width dimension of the sandblasting gap is 1.3 mm to 1.5 mm.

[0025] Optionally, the nozzle assembly includes:

[0026] A nozzle outer frame fixedly provided at the bottom of the water passing assembly;

[0027] Two oppositely arranged boron carbide tool bodies, and the two boron carbide tool bodies are located inside the nozzle outer frame and enclose to form the sandblasting gap.

[0028] The beneficial effects of the present utility model are as follows: A sandblasting water knife is provided. On the one hand, the two water inlet channels inside the water knife are symmetrically distributed about the air inlet channel on the left and right, and the length dimension of each water inlet channel is equal to the length dimension of the air inlet channel, ensuring uniform air and water intake in the entire mixing channel;

[0029] On the other hand, sand water flows down from the two side water inlets through the water inlet channels, and compressed air blows down through a certain air inlet channel. The high-speed air flow pressurizes the sand water in the mixing channel to accelerate the ejection of the sand water. At the same time, the high-speed air flow also forms a low-pressure adsorption phenomenon on the sand water in the two water inlet channels above the mixing channel, enabling it to flow uniformly and quickly to the mixing channel, further improving the uniformity of the ejected sand water.

[0030] Therefore, the sandblasting water knife provided by the present utility model can effectively improve the uniformity of the ejected sand water, and further improve the sandblasting treatment effect. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is a schematic structural diagram of the sandblasting water knife provided for the embodiment;

[0033] Figure 2 It is an exploded view of the sandblasting water knife provided for the embodiment;

[0034] Figure 3 It is a sectional view of the sandblasting water knife provided for the embodiment.

[0035] In the figure:

[0036] 200a, sandblasting water jet

[0037] 1. Intake assembly; 101. Air chamber cover; 1011. Intake chamber; 102. Intake partition; 1021. Intake gap; 103. Intake joint

[0038] 2. Water inlet assembly; 201. Water inlet joint; 202. Bolt hole

[0039] 3. Air knife assembly; 301. Air inlet channel; 302. T-shaped groove; 303. Water inlet groove

[0040] 4. Water passing assembly; 401. Water passing block; 4011. Inclined plate; 4011a. Water inlet channel; 4012. Vertical plate; 402. Mixing channel

[0041] 5. Nozzle assembly; 501. Sandblasting gap; 502. Nozzle outer frame; 503. Boron carbide tool body

[0042] 6. Upper gasket

[0043] 7. Lower gasket

[0044] 8. Internal insert Detailed implementation manners

[0045] In the present utility model, referring to "embodiment" means that specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present utility model. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it particularly limited to the independence or relevance with other embodiments. In principle, in the present utility model, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions

[0046] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which the present utility model belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit the present utility model

[0047] In the description of the present utility model, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that there can be three relationships, for example, A and / or B, which means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " herein generally represents an "or" logical relationship between the associated objects

[0048] In the present utility model, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary or sequential relationship, etc. between these entities or operations.

[0049] Without further limitation, in the present utility model, the expressions such as "comprising", "including", "having" or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method or product including the said elements, so that in a process, method or product including a series of elements, it may include not only those defined elements, but also other elements not explicitly listed, or elements inherent in such process, method or product.

[0050] The same as the understanding in the "Examination Guidelines", in the present utility model, expressions such as "greater than", "less than", "exceeding" are understood not to include the recited number; expressions such as "above", "below", "within" are understood to include the recited number. In addition, in the description of the embodiments of the present utility model, the meaning of "a plurality of" is two or more (including two). Similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.

[0051] In the description of the embodiments of the present utility model, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the drawing. It is only for the convenience of describing the specific embodiments of the present utility model or for the reader to understand, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model.

[0052] Unless otherwise clearly specified or limited, in the description of the embodiments of the present utility model, the terms such as "installed", "connected", "joined", "fixed", "arranged", etc. should be understood in a broad sense. For example, the said "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the technical field to which the present utility model belongs, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0053] See Figures 1 to 3 , the present utility model provides a sandblasting water knife 200a, which includes an air inlet assembly 1, a water inlet assembly 2, a wind knife assembly 3, a water passing assembly 4, and a nozzle assembly 5.

[0054] The air inlet assembly 1 is provided with an air inlet chamber 1011 and an air inlet gap 1021 that communicates the air inlet chamber 1011 to the external space of the air inlet assembly 1. The water inlet assembly 2 is installed at the bottom of the air inlet assembly 1 and cooperates with the air inlet assembly 1 to enclose and form a water knife inner cavity. The wind knife assembly 3 is located in the water knife inner cavity, and is provided with an air inlet channel 301 that extends downward and communicates with the air inlet gap 1021, and a water inlet groove 303 is provided on the surface of the wind knife assembly 3 close to the water inlet assembly 2.

[0055] The upper part of the water passing assembly 4 is located between the wind knife assembly 3 and the water inlet assembly 2, and cooperates with the water inlet assembly 2 to enclose and form two water inlet channels 4011a that communicate with the water inlet groove 303; wherein, the two water inlet channels 4011a are symmetrically arranged with respect to the air inlet channel 301; the lower part of the water passing assembly 4 extends below the wind knife assembly 3 and is provided with a mixing channel 402 that communicates with the air inlet channel 301 and the water inlet channels 4011a;

[0056] The nozzle assembly 5 is located below the water inlet assembly 2 and is provided with a sandblasting gap 501 that communicates with the mixing channel 402; wherein, the length dimensions of the air inlet channel 301, the water inlet channels 4011a, and the mixing channel 402 are equal.

[0057] Optionally, the sandblasting water knife 200a further includes a water inlet joint 201 that communicates with the water inlet groove 303.

[0058] The sandblasting water knife 200a provided in this embodiment works as follows: Compressed air is sent into the air inlet chamber 1011, and sand water is sent into the water inlet groove 303. The compressed air is conveyed downward through the air inlet gap 1021 and the air inlet channel 301 to the mixing channel 402, and the sand water is conveyed to the mixing channel 402 through the water inlet channels 4011a; After the compressed air and the sand water are mixed in the mixing channel 402, they are sprayed out through the sandblasting gap 501 to wash the surface of the workpiece and complete the surface treatment operation on the workpiece.

[0059] In the above process:

[0060] On the one hand, the two water inlet channels 4011a inside the water knife are symmetrically distributed left and right with respect to the air inlet channel 301, and the length dimension of each water inlet channel 4011a is equal to the length dimension of the air inlet channel 301, ensuring uniform air and water intake in the entire mixing channel 402;

[0061] On the other hand, sand water flows down from the two - side water inlet troughs 303 through the water inlet channels 4011a, and compressed air blows down through a certain air inlet channel 301. The high - speed air flow pressurizes the sand water in the mixing channel 402, causing it to accelerate and eject the sand water. At the same time, the high - speed air flow also forms a low - pressure adsorption phenomenon on the sand water in the two water inlet channels 4011a above the mixing channel 402, enabling it to flow evenly and quickly into the mixing channel 402, further improving the uniformity of the ejected sand water.

[0062] Therefore, the sand - blasting water jet 200a provided by the present utility model can effectively improve the uniformity of the ejected sand water, and further improve the sand - blasting treatment effect.

[0063] In this embodiment, the air intake assembly 1 includes an air cavity cover 101 and an air intake partition 102. The air cavity cover 101 is provided with the air intake chamber 1011 with an opening facing downwards; the air intake partition 102 is located below the air cavity cover 101 and is provided with the air intake gap 1021 communicating with the air intake chamber 1011. A plurality of air intake connectors 103 communicating with the air intake chamber 1011 are connected to the air cavity cover 101.

[0064] Optionally, an upper gasket 6 is provided between the air cavity cover 101 and the air intake partition 102, and a lower gasket 7 is provided between the water inlet assembly 2 and the nozzle assembly 5.

[0065] In this embodiment, the air cavity cover 101 is locked to the top surface of the air intake partition 102 by bolts from top to bottom, and the water - passing assembly 4 is locked to the bottom surface of the air intake partition 102 by bolts from bottom to top.

[0066] In this embodiment, both the air knife assembly 3 and the water - passing assembly 4 are made of tungsten steel. Inside the sand - blasting water jet 200a, the flow rates of air and sand water are very fast, and the width dimensions of the air inlet channel 301 and the water inlet channel 4011a are relatively small, with severe wear. Using conventional metal materials has a very short service life. In this embodiment, both the air knife assembly 3 and the water - passing assembly 4 are made of tungsten steel to extend the service life.

[0067] Optionally, a T - shaped groove 302 is further provided on the surface of the air knife assembly 3 close to the water inlet assembly 2, and an internal insert 8 for tightly connecting with the water inlet assembly 2 is inserted into the T - shaped groove 302. The tapping of tungsten steel parts is difficult. Therefore, in this embodiment, an internal insert 8 that is easy to tap is embedded inside the air knife assembly 3 to facilitate the tight connection between the air knife assembly 3 and the water inlet assembly 2.

[0068] Further, a plurality of threaded holes are provided in the internal insert 8, and bolt holes 202 are provided in the water inlet assembly 2 corresponding to each of the threaded holes. After a bolt is horizontally passed through the bolt hole 202 and then threadedly connected to the corresponding threaded hole, the air knife assembly 3 and the water inlet assembly 2 can be locked.

[0069] In this embodiment, the water passing assembly 4 includes two oppositely arranged water passing blocks 401. The upper part of the water passing block 401 is an inclined plate 4011 matching the air knife assembly 3, and the lower part is a vertical plate 4012; the lower part of the air knife assembly 3 is inserted between the two inclined plates 4011, and the air knife assembly 3 and each inclined plate 4011 cooperate to form a water inlet channel 4011a.

[0070] Optionally, the width dimension of the air inlet channel 301 is 1.1 mm to 1.3 mm, the width dimension of the water inlet channel 4011a is 0.4 mm to 0.6 mm, the width dimension of the mixing channel 402 is 1.8 mm to 2.0 mm; the width dimension of the sandblasting gap 501 is 1.3 mm to 1.5 mm.

[0071] After a large amount of research and experiments, it is found that when the sandblasting water knife 200a with the above-mentioned size combination is used for sandblasting operations, the sprayed sand water curtain is most evenly distributed, and the appearance uniformity of the workpiece after sandblasting is very excellent.

[0072] Optionally, the nozzle assembly 5 includes a nozzle outer frame 502 and two oppositely arranged boron carbide cutter bodies 503. The nozzle outer frame 502 is fixedly arranged at the bottom of the water passing assembly 4; the two boron carbide cutter bodies 503 are located inside the nozzle outer frame 502 and enclose to form the sandblasting gap 501.

[0073] It should be noted that the sandblasting gap 501 is the position with the largest wear. The sand water is pressurized by compressed air, and the flow rate is greater, and the friction between the sand grains and the inner wall of the nozzle is the most serious. In this embodiment, the sandblasting gap 501 is formed by enclosing with boron carbide cutter bodies 503 with a relatively high hardness, which can be compatible with sandblasting of sand grains with different hardnesses. At present, it can withstand the sandblasting of silicon carbide sand grains, with a service life of more than 1000 hours, and can be quickly repaired and reused.

[0074] In summary, the sandblasting water knife 200a provided in this embodiment has the following beneficial effects:

[0075] ①Improve the sandblasting uniformity: By designing two symmetric water inlet channels 4011a and a mixing channel 402 of the same length as the air inlet channel 301, the uniform mixing of compressed air and sand water is ensured, thereby improving the sandblasting uniformity.

[0076] ②Enhance the sandblasting effect: The high-speed air flow pressurizes the sand and water, accelerating its ejection. At the same time, a low-pressure adsorption phenomenon is formed, making the sand and water flow more evenly and quickly towards the mixing channel 402, further enhancing the sandblasting effect.

[0077] ③Prolong the service life: Tungsten steel parts are used as the air knife assembly 3 and the water passing assembly 4, improving wear resistance and prolonging the service life of the sandblasting water knife 200a.

[0078] ④Facilitate maintenance and replacement: By setting the T-shaped groove 302 and the internal insert 8, the connection method between the air knife assembly 3 and the water inlet assembly 2 is simplified, facilitating maintenance and replacement.

[0079] ⑤Precise dimension design: By precisely designing the width dimensions of the air inlet channel 301, the water inlet channel 4011a, the mixing channel 402, and the sandblasting gap 501, it is ensured that the ejected sand and water curtain is evenly distributed, improving the uniformity of the workpiece appearance.

[0080] ⑥High-wear-resistant nozzle design: The boron carbide tool body 503 is used to form the sandblasting gap 501, improving the wear resistance of the nozzle, being compatible with sand grains of different hardnesses, prolonging the service life of the nozzle, and facilitating secondary repair and reuse.

[0081] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any equivalent structure or equivalent process substitution or modification generated by using the content recorded in the text and drawings of the specification of this application based on the essential concept of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of this application.

Claims

1. A sandblasting water jet (200a), characterized in that, Comprising: An air intake assembly (1), the air intake assembly (1) being provided with an air intake chamber (1011) and an air intake gap (1021) that communicates the air intake chamber (1011) to the external space of the air intake assembly (1); A water inlet assembly (2), the water inlet assembly (2) being installed at the bottom of the air intake assembly (1) and cooperating with the air intake assembly (1) to enclose and form a water knife inner cavity; An air knife assembly (3), the air knife assembly (3) being located inside the water knife inner cavity and being provided with an air inlet channel (301) that extends downward from top to bottom and communicates with the air intake gap (1021), and a water inlet groove (303) being provided on the surface of the air knife assembly (3) close to the water inlet assembly (2); A water passing assembly (4), the upper part of the water passing assembly (4) being located between the air knife assembly (3) and the water inlet assembly (2) and cooperating with the water inlet assembly (2) to enclose and form two water inlet channels (4011a) that communicate with the water inlet groove (303); wherein, the two water inlet channels (4011a) are symmetrically arranged with respect to the air inlet channel (301); the lower part of the water passing assembly (4) extends below the air knife assembly (3) and is provided with a mixing channel (402) that communicates with the air inlet channel (301) and the water inlet channels (4011a); A nozzle assembly (5), the nozzle assembly (5) being located below the water inlet assembly (2) and being provided with a sand blasting gap (501) that communicates with the mixing channel (402); Wherein, the length dimensions of the air inlet channel (301), the water inlet channels (4011a), and the mixing channel (402) are equal.

2. The abrasive water jet (200a) according to claim 1, wherein, The air intake assembly (1) includes: An air chamber cover (101), the air chamber cover (101) being provided with the air intake chamber (1011) with an opening facing downward; An air intake partition (102), the air intake partition (102) being located below the air chamber cover (101) and being provided with the air intake gap (1021) that communicates with the air intake chamber (1011).

3. The abrasive water jet (200a) according to claim 2, characterized in that, An upper gasket (6) is provided between the air chamber cover (101) and the air intake partition (102), and a lower gasket (7) is provided between the water inlet assembly (2) and the nozzle assembly (5).

4. The abrasive water jet (200a) according to claim 2, characterized in that, The air chamber cover (101) is locked to the top surface of the air intake partition (102) by bolts from top to bottom, and the water passing assembly (4) is locked to the bottom surface of the air intake partition (102) by bolts from bottom to top.

5. The abrasive water jet (200a) according to claim 1, characterized in that, Both the air knife assembly (3) and the water passing assembly (4) are made of tungsten steel.

6. The abrasive water jet (200a) according to claim 5, characterized in that, A T-shaped groove (302) is further provided on the surface of the air knife assembly (3) close to the water inlet assembly (2), and an internal insert (8) for tightly connecting with the water inlet assembly (2) is inserted into the T-shaped groove (302).

7. The abrasive water jet (200a) according to claim 6, characterized in that, The internal insert (8) is provided with a plurality of threaded holes, and the water inlet assembly (2) is provided with bolt holes (202) corresponding to the positions of each of the threaded holes.

8. The abrasive water jet (200a) according to claim 1, characterized in that, The water passing component (4) includes two relatively arranged water passing blocks (401). The upper part of the water passing block (401) is an inclined plate (4011) matching the air knife component (3), and the lower part is a vertical plate (4012). The lower part of the air knife component (3) is inserted between the two inclined plates (4011), and the air knife component (3) and each inclined plate (4011) cooperate to form a water inlet channel (4011a).

9. The abrasive water jet (200a) according to claim 1, characterized in that, The width dimension of the air inlet channel (301) is 1.1 mm to 1.3 mm, the width dimension of the water inlet channel (4011a) is 0.4 mm to 0.6 mm, and the width dimension of the mixing channel (402) is 1.8 mm to 2.0 mm; the width dimension of the sandblasting gap (501) is 1.3 mm to 1.5 mm.

10. The abrasive water jet (200a) according to claim 1, characterized in that, The nozzle component (5) includes: A nozzle outer frame (502), and the nozzle outer frame (502) is fixedly arranged at the bottom of the water passing component (4). Two relatively arranged boron carbide knife bodies (503), and the two boron carbide knife bodies (503) are located inside the nozzle outer frame (502) and enclose to form the sandblasting gap (501).

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