Circulating sand box

Abstract

The utility model relates to sand blasting equipment, and particularly discloses a circulating sand box, which comprises a sand box shell, a sand box cover, a sand box cover and a sand box cover, the stirring blades are positioned in the inner cavity of the sand box; the stirring motor is positioned outside the sand box shell and is in transmission connection with the stirring blades; the first water inlet nozzles are positioned in the inner cavity of the sand box and spray water towards the stirring blades; the second water inlet nozzles are positioned in the inner cavity of the sand box and spray water towards the bottom of the inner cavity of the sand box. The circulating sand box provided by the utility model can effectively solve the problem of non-uniform stirring caused by easy deposition of large-particle-size sand grains.

Description

Technical Field

[0001] The utility model relates to sandblasting equipment, in particular to a circulating sand box. Background Art

[0002] Wet sandblasting surface treatment process is a technology that uses a sand and water pump to spray a mixture of sand and water onto the surface of the workpiece at a certain pressure. It is mainly used for cleaning, rust removal or matte treatment. Compared with dry sandblasting, this process has less dust and less impact on the environment, but it is necessary to prevent rusting caused by moisture. Usually 1% to 15% of rust inhibitors and emulsifiers or soapy water are added to the water to prevent rust. Wet sandblasting technology is widely used in many fields such as surface treatment before electroplating and painting, degreasing and rust removal of internal and external mechanical and electrical parts, cleaning, polishing and roughening of molds.

[0003] When performing sand blasting, one of the important steps is to add sand and water into the sand box, mix them evenly, and then send the sand and water mixture out.

[0004] The existing sand box has the following problems:

[0005] Simply relying on the stirring motor to drive the stirring blades to rotate to drive the sand and water in the box, when the specific gravity of the sand particles is small, normal stirring operations can be carried out. When the specific gravity of the sand particles is large, the sand particles are easy to settle and cause uneven stirring.

[0006] Therefore, it is necessary to improve the existing sand box to solve the problem that large-size sand particles are easily deposited and cause uneven stirring.

[0007] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Utility Model Content

[0008] One purpose of the utility model is to provide a circulating sand box, which can effectively solve the problem that large-diameter sand particles are easy to settle and cause uneven stirring.

[0009] In order to achieve the above purpose, the utility model provides a circulating sand box, comprising:

[0010] A sand box shell, wherein the sand box shell is provided with a sand box inner cavity;

[0011] A stirring blade, wherein the stirring blade is located in the inner cavity of the sand box;

[0012] A stirring motor, the stirring motor is located outside the sand box housing and is drivingly connected to the stirring blade;

[0013] A number of first water inlet nozzles, each of the first water inlet nozzles being located in the inner cavity of the sand box and spraying water towards the stirring blades;

[0014] A number of second water inlet nozzles, each of the second water inlet nozzles being located in the inner cavity of the sand box and spraying water towards the bottom of the inner cavity of the sand box.

[0015] Optionally, the stirring blades are located at the central position of the inner cavity of the sand box;

[0016] Each of the first water inlet nozzles and each of the second water inlet nozzles are arranged at intervals along the edge of the inner cavity of the sand box.

[0017] Optionally, both the first water inlet nozzle and the second water inlet nozzle are arranged to incline downwards.

[0018] Optionally, the central axis of the first water inlet nozzle intersects with the central axis of the sand box housing, and the distance dimension between the central axis of the first water inlet nozzle and the central axis of the sand box housing gradually decreases from top to bottom.

[0019] Optionally, the central axis of the second water inlet nozzle is skew to the central axis of the sand box housing, and the water spraying direction of the second water inlet nozzle matches the rotation direction when the stirring blades are driven to rotate, so as to cooperate with the stirring blades to boost the rotation of the sand water.

[0020] Optionally, the bottom surface of the inner cavity of the sand box is a conical surface.

[0021] Optionally, the bottom surface of the inner cavity of the sand box is provided with a downwardly concave discharge groove.

[0022] Optionally, it further includes a circulation inlet pipe communicating with the upper part of the inner cavity of the sand box, a circulation outlet pipe communicating with the bottom of the inner cavity of the sand box, and a circulation pump connecting the circulation inlet pipe and the circulation outlet pipe.

[0023] The beneficial effects of the present utility model are as follows: A circulating sand box is provided. The first water inlet nozzle directly sprays water in an impact manner towards the position with slow flow velocity at the rotation center of the stirring blades. The formed water column can disperse the deposited sand grains, reduce the direct contact between the sand grains and the stirring blades, reduce the friction force, accelerate the flow of the sand water at the rotation center position, prevent the sand grains from depositing, and ensure the uniformity of the sand water concentration in the sand box; at the same time, the second water inlet nozzle sprays water towards the bottom of the cavity, helping the sand grains to re-suspend, reducing the deposition of the sand grains on the stirring blades, and ensuring the smooth operation of the stirring system. Such a design improves the reliability of the system, reduces the maintenance requirements, and improves the production efficiency.

[0024] Therefore, the circulating sand box provided by the present utility model can effectively solve the problem that large particle size sand grains are prone to deposition, resulting in uneven stirring. Description of the Drawings

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 Overall structure schematic diagram of the circulating sand box provided for the embodiment;

[0027] Figure 2 Internal structure schematic diagram of the circulating sand box provided for the embodiment;

[0028] Figure 3 Top view of the circulating sand box provided for the embodiment;

[0029] Figure 4 Sectional schematic diagram provided for the embodiment.

[0030] In the figure:

[0031] 9. Circulating sand box;

[0032] 901. Sand box housing; 9011. Sand box inner cavity; 9011a. Conical surface; 9011b. Drainage groove;

[0033] 902. Stirring blade;

[0034] 903. Stirring motor;

[0035] 904. First water inlet nozzle;

[0036] 905. Second water inlet nozzle;

[0037] 906. Circulation pump. Detailed implementation manners

[0038] Referring to the "embodiment" in the present invention means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present invention. The term "embodiment" appearing in 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 invention, 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.

[0039] 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 this utility model belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this utility model.

[0040] In the description of this 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 means: A exists, B exists, and both A and B exist simultaneously. Additionally, the character " / " in this text generally represents an "or" logical relationship between the associated objects before and after.

[0041] In this 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 relationships between these entities or operations.

[0042] Without further limitations, in this utility model, the expressions "comprising", "including", "having", or other similar expressions used in the statements 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 stated elements. Thus, a process, method, or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such a process, method, or product.

[0043] Similar to the understanding in the "Examination Guidelines", in this utility model, expressions such as "greater than", "less than", "exceeding", etc. are understood not to include the number itself; expressions such as "above", "below", "within", etc. are understood to include the number itself. In addition, in the description of the embodiments of this 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.

[0044] In the description of the embodiments of this 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., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiment or the drawing. This is only for the convenience of describing the specific embodiments of this utility model or facilitating the reader's understanding, and does not indicate or imply that the indicated device or component 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 this utility model.

[0045] Unless otherwise clearly specified or limited, in the description of the embodiments of the present utility model, the terms such as "installation", "connection", "linkage", "fixation", "setting" and the like shall be understood in a broad sense. For example, the "connection" may be a fixed connection, a detachable connection, or an integral setting; it may be a mechanical connection, an electrical connection, or a communication connection; it may be a direct connection, or an indirect connection through an intermediate medium; it may be the internal communication of two components or the interaction relationship between two components. For those skilled in the art to which the present utility model pertains, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0046] See Figures 1 to 4 , the present utility model provides a circulating sand box 9, which includes a sand box housing 901, stirring blades 902, a stirring motor 903, a plurality of first water inlet nozzles 904, and a plurality of second water inlet nozzles 905.

[0047] The sand box housing 901 is provided with a sand box inner cavity 9011; the stirring blades 902 are located in the sand box inner cavity 9011; the stirring motor 903 is located outside the sand box housing 901 and is in transmission connection with the stirring blades 902; each of the first water inlet nozzles 904 is located in the sand box inner cavity 9011 and sprays water towards the stirring blades 902; each of the second water inlet nozzles 905 is located in the sand box inner cavity 9011 and sprays water towards the bottom of the sand box inner cavity 9011.

[0048] When the specific gravity of the sand grains is relatively large, the sand and water are prone to sedimentation, and the uniformity of the concentration of the sand and water stirred by the rotation of the traditional blades is relatively poor. The circulating sand box 9 provided in this embodiment, on the basis of the rotation and stirring of the traditional blades, combines the first water inlet nozzles 904 and the second water inlet nozzles 905 to perform sand water circulation impact stirring, and combines the stirring blades 902 to increase the flow rate of the sand and water, and finally achieves the uniform stirring effect of the large particle sand and water.

[0049] In the circulating sand box 9 provided in this embodiment, the first water inlet nozzle 904 directly sprays water in an impact manner towards the position with a slow flow rate at the rotation center of the stirring blades 902. The formed water column can disperse the deposited sand grains, reduce the direct contact between the sand grains and the stirring blades 902, reduce the friction force, accelerate the flow of the sand and water at the rotation center position, prevent the sand grains from sedimenting, and ensure the uniformity of the sand and water concentration in the sand box; at the same time, the second water inlet nozzle 905 sprays water towards the bottom of the cavity, helping the sand grains to re-suspend, reducing the deposition of the sand grains on the stirring blades 902, and ensuring the smooth operation of the stirring system. Such a design improves the reliability of the system, reduces the maintenance requirements, and improves the production efficiency.

[0050] Therefore, the circulating sand box 9 provided in this embodiment can effectively solve the problem that large-sized sand grains are prone to deposition, resulting in uneven stirring.

[0051] In this embodiment, the stirring blade 902 is located at the central position of the inner cavity 9011 of the sand box; each of the first water inlet nozzles 904 and each of the second water inlet nozzles 905 are arranged at intervals along the edge of the inner cavity 9011 of the sand box.

[0052] The stirring blade 902 is located at the central position, ensuring the uniformity of stirring, so that the sand-water mixture can diffuse uniformly from the center to the outside. The first water inlet nozzle 904 and the second water inlet nozzle 905 are arranged at intervals along the edge. Such a layout can effectively cover the entire inner cavity 9011 of the sand box, ensuring the uniform distribution of water spraying, further preventing the accumulation of sand grains on the stirring blade 902, and improving the uniformity of stirring of the stirring blade 902.

[0053] Optionally, both the first water inlet nozzle 904 and the second water inlet nozzle 905 are arranged to incline downward. The first water inlet nozzle 904 and the second water inlet nozzle 905 are arranged to incline downward. Such a design helps to more effectively disperse the stationary sand-water deposits, prevent the accumulation of sand grains at the bottom or on the blades, and thus maintain the smooth operation of the stirring system.

[0054] Specifically, the central axis of the first water inlet nozzle 904 intersects the central axis of the sand box housing 901, and the distance dimension between the central axis of the first water inlet nozzle 904 and the central axis of the sand box housing 901 gradually decreases from top to bottom.

[0055] The central axis of the second water inlet nozzle 905 is skew to the central axis of the sand box housing 901, and the water spraying direction of the second water inlet nozzle 905 matches the rotation direction when the stirring blade 902 is driven to rotate, so as to cooperate with the stirring blade 902 to boost the rotation of the sand-water.

[0056] That is, the first water inlet nozzle 904 sprays water substantially along the radial direction of the sand box housing 901, making the sand-water deposited at the central rotating shaft of the stirring blade 902 become loose, so that the stirring blade 902 can continue to rotate for stirring operations;

[0057] The second water inlet nozzle 905 sprays water substantially along the tangential direction of the sand box housing 901, making the sand-water deposited at the blade end of the stirring blade 902 become loose, so that the stirring blade 902 can continue to rotate for stirring operations.

[0058] In the circulating sand box 9 of this embodiment, the central axis of the first water inlet nozzle 904 intersects with the central axis of the sand box housing 901, and the distance dimension gradually decreases from top to bottom. Such a design enables the sprayed water to act more concentratedly above the stirring blade 902, effectively preventing the accumulation of sand grains on the stirring blade 902, thereby improving the uniformity of the stirring of the stirring blade 902.

[0059] The central axis of the second water inlet nozzle 905 is skew to the central axis of the sand box housing 901, and the water spraying direction matches the rotation direction of the stirring blade 902. Such a design helps to reduce the resistance suffered by the stirring blade 902 during rotation, making the stirring process smoother. For example, when the stirring blade 902 rotates clockwise, the second water inlet nozzle 905 also inclines clockwise to boost the sand water and increase the rotation speed of the sand water, thereby maintaining the stable operation of the stirring system.

[0060] In this embodiment, the bottom surface of the sand box inner cavity 9011 is a conical surface 9011a. Such a design helps the sand water mixture to naturally gather towards the center during the stirring process, especially the sand grains with larger particle sizes, reducing the deposition of sand grains at the bottom, improving the stirring efficiency, and at the same time improving the uniformity of the stirring of the stirring blade 902.

[0061] Furthermore, a downwardly concave discharge groove 9011b is provided on the bottom surface of the sand box inner cavity 9011. In the circulating sand box 9 of this embodiment, a downwardly concave discharge groove 9011b is provided on the bottom surface of the sand box inner cavity 9011, and then the discharge groove 9011b is connected to the outside of the circulating sand box 9 and / or the circulating pump 906 through a discharge valve. Generally, the sand grains with larger particle sizes and difficult to stir will be deposited in the discharge groove 9011b. The setting of the discharge groove 9011b is beneficial for preferentially discharging the sand grains with too large sizes in the circulating sand box 9 during outward discharge, further reducing the deposition of sand grains at the bottom.

[0062] The circulating sand box 9 further includes a circulating inlet pipe connected to the upper part of the sand box inner cavity 9011, a circulating outlet pipe connected to the bottom of the sand box inner cavity 9011, and a circulating pump 906 connecting the circulating inlet pipe and the circulating outlet pipe. By adding the circulating inlet pipe, the circulating outlet pipe and the circulating pump 906, a closed circulating system is formed, enabling the sand water mixture to continuously circulate in the circulating sand box 9, improving the utilization rate of the sand water and the stirring efficiency, and at the same time reducing the deposition of sand grains and improving the uniformity of the stirring of the stirring blade 902.

[0063] In summary, the circulating sand box 9 provided in this embodiment has the following advantages:

[0064] ① The first water inlet nozzle 904 and the second water inlet nozzle 905 can effectively disperse the deposited sand water, reducing the accumulation of sand grains at the bottom or on the blades;

[0065] ② The stirring blade 902 at the central position and the first water inlet nozzle 904 and the second water inlet nozzle 905 arranged at intervals along the edge work together to ensure that the sand-water mixture diffuses evenly from the center outwards, effectively reducing the accumulation of sand grains on the rotating blades and improving the uniformity of stirring. Combined with the inner cavity design at the bottom of the conical surface 9011a, it promotes the movement of sand grains, reduces the deposition of sand grains, and further improves the uniformity of stirring of the stirring blade 902.

[0066] ③ The closed circulation system, including the circulation inlet pipe, the circulation outlet pipe and the circulation pump 906, and the design of the discharge groove 9011b, improves the recycling rate of sand and water and the stirring efficiency, reduces the deposition of sand grains, and ensures the smooth operation of the system.

[0067] It should be noted that the linear drive mechanism mentioned in the present invention can be a cylinder, a hydraulic cylinder, an electric cylinder or a motor screw linear module, etc., and the rotary drive mechanism mentioned can be a brushed motor, a brushless motor or a rotary cylinder, etc. The present invention does not limit the specific structural forms of the linear drive mechanism and the rotary drive mechanism.

[0068] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of the present application, the patent protection scope of the present application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the essential concept of the present application and using the content recorded in the text and drawings of the specification of the present application, as well as those directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of the present application.

Claims

1. A circulating sand mold, characterized in that, Including: A sand box housing (901), the sand box housing (901) being provided with a sand box inner cavity (9011); Stirring blades (902), the stirring blades (902) being located in the sand box inner cavity (9011); A stirring motor (903), the stirring motor (903) being located outside the sand box housing (901) and being in driving connection with the stirring blades (902); A plurality of first water inlet nozzles (904), each of the first water inlet nozzles (904) being located in the sand box inner cavity (9011) and spraying water towards the stirring blades (902); A plurality of second water inlet nozzles (905), each of the second water inlet nozzles (905) being located in the sand box inner cavity (9011) and spraying water towards the bottom of the sand box inner cavity (9011).

2. The circulating sand mold box according to claim 1, wherein, The stirring blades (902) are located at the central position of the sand box inner cavity (9011); Each of the first water inlet nozzles (904) and each of the second water inlet nozzles (905) are arranged at intervals along the edge of the sand box inner cavity (9011).

3. The circulating sand box according to claim 2, wherein The first water inlet nozzles (904) and the second water inlet nozzles (905) are both arranged to incline downwards.

4. The circulating sand box according to claim 3, wherein, The central axis of the first water inlet nozzle (904) intersects with the central axis of the sand box housing (901), and the distance dimension between the central axis of the first water inlet nozzle (904) and the central axis of the sand box housing (901) gradually decreases from top to bottom.

5. The circulating sand mold box according to claim 3, wherein The central axis of the second water inlet nozzle (905) is skew to the central axis of the sand box housing (901), and the water spraying direction of the second water inlet nozzle (905) matches the rotation direction when the stirring blades (902) are driven to rotate, so as to cooperate with the stirring blades (902) to boost the rotation of the sand and water.

6. The circulating sand box according to claim 1, wherein, The bottom surface of the sand box inner cavity (9011) is a conical surface (9011a).

7. The circulating sand box according to claim 6, wherein The bottom surface of the sand box inner cavity (9011) is provided with a downwardly concave discharge groove (9011b).

8. The circulating sand box according to claim 1, characterized in that, It further includes a circulation inlet pipe communicating with the upper part of the sand box inner cavity (9011), a circulation outlet pipe communicating with the bottom of the sand box inner cavity (9011), and a circulation pump (906) communicating the circulation inlet pipe and the circulation outlet pipe.

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