Sand blasting nozzle supporting multi-granularity sand shots

Abstract

The utility model relates to a sand blasting nozzle supporting multi-granularity sand shots, and relates to the technical field of sand blasting equipment. The sand blasting nozzle comprises a sand blasting nozzle seat, a nozzle body is arranged on the sand blasting nozzle seat, a plurality of sand shot inlets are formed in the side wall of the nozzle body, each sand shot inlet is provided with a sand shot regulation and control valve for controlling whether the sand shot inlet is communicated or not, each sand shot regulation and control valve is communicated with a sand inlet pipeline, the tail end of the nozzle body is communicated with an air inlet pipe, and the air inlet pipe is communicated with an air outlet. The air inlet pipe and the sand shot regulating valve are communicated with an air supply mechanism, and the sand inlet pipeline is communicated with a sand shot circulating mechanism. And the sand shot regulation and control valve is used for controlling the sand shot of which granularity is adopted for sand blasting, so that the sand blasting process of the sand shots of various granularities is supported, the sand blasting process design is favorably optimized, and the sand blasting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sandblasting equipment, in particular to a sandblasting nozzle supporting sand pellets with multiple particle sizes. Background Art

[0002] Sandblasting uses compressed air as a power source to form a high-speed jet beam to spray sand shots (corundum, quartz sand, rounded steel sand, etc.) at high speed onto the surface of the workpiece to be processed. Due to the impact and cutting effect of the sand shots on the workpiece surface, it can usually be used to clean the oxide scale, residual salt, and residual oil on the workpiece surface; clean the residues and burrs of machined parts; clean the flash of plastic molded parts; remove rust from various pipes and containers; clean scratches on decorative surfaces or pre-treat the surface of workpieces; polish the surface of wooden products and clean and preserve other artworks, etc. During the sandblasting process, it is often necessary to change the particle size of the sand shots according to the processing requirements, and the existing sandblasting nozzles often only match one type of sandblasting. This requires setting up multiple sandblasting processes with different sand shot particle sizes during process design, which requires more sandblasting equipment and a long process flow, resulting in low sandblasting efficiency. Utility Model Content

[0003] In order to solve the above technical problem or at least partially solve the above technical problem, the utility model provides a sandblasting nozzle supporting sand shots of multiple particle sizes.

[0004] The utility model provides a sandblasting nozzle supporting multi-size sand shots, comprising: a sandblasting nozzle seat, a nozzle body is arranged on the sandblasting nozzle seat, a plurality of sand shot inlets are arranged on the side wall of the nozzle body, each of the sand shot inlets is provided with a sand shot regulating valve for controlling whether the sand shot inlet is conductive, each of the sand shot regulating valves is respectively connected to a sand inlet pipeline, the tail end of the nozzle body is connected to an air inlet pipe, the air inlet pipe and the sand shot regulating valve are connected to an air supply mechanism, and each of the sand inlet pipelines is connected to a sand shot circulation mechanism.

[0005] Furthermore, the sandblasting nozzle seat includes: a connecting seat connected to the sandblasting robot arm and a sandblasting nozzle connecting seat for fixing the sandblasting nozzle, wherein three first universal joint seats are arranged circumferentially on the connecting seat, and two first universal joints are fixedly arranged on each of the first universal joint seats, and three second universal joint seats are arranged circumferentially on the sandblasting nozzle connecting seat, and two second universal joints are fixedly arranged on each of the second universal joint seats, wherein the two second universal joints on each of the second universal joint seats are respectively connected to the adjacent first universal joints on two adjacent first universal joint seats via an electric telescopic rod; the middle parts of the connecting seat and the sandblasting nozzle connecting seat are both provided with through holes, and the middle part of the sandblasting nozzle connecting seat is provided with a sandblasting nozzle fixing frame, and the sandblasting nozzle fixing frame fixes the nozzle body passing through the middle through hole of the sandblasting nozzle connecting seat.

[0006] Furthermore, the first universal joint and the second universal joint are ball-fork universal joints.

[0007] Furthermore, the electric telescopic rod is a linear motor telescopic rod, and the linear motor telescopic rod is electrically connected to the controller via a driving circuit.

[0008] Furthermore, the sand shot regulating valve comprises: an annular sand shot regulating valve body arranged outside the nozzle body, the annular sand shot regulating valve body is provided with a corresponding sand shot inlet corresponding to each sand shot inlet, the annular sand shot regulating valve body is provided with a corresponding arc-shaped pneumatic chamber corresponding to each sand shot inlet, pneumatic pipelines are respectively arranged at both ends of the arc-shaped pneumatic chamber, two pneumatic pipelines of each arc-shaped pneumatic chamber are connected to a corresponding two-position three-way reversing valve, each of the two-position three-way reversing valves is connected to an air supply mechanism, and the two-position three-way reversing valve is controlled by a valve. The control circuit is electrically connected to the controller; an arc-shaped plate-shaped piston valve core is slidably arranged in the arc-shaped pneumatic chamber, the inner side of the arc-shaped plate-shaped piston valve core is in contact with the outer wall of the nozzle body, the arc-shaped plate-shaped piston valve core is in contact with the wall of the arc-shaped pneumatic chamber, a through hole is arranged on the arc-shaped plate-shaped piston valve core, when the arc-shaped plate-shaped piston valve core moves to one end of the arc-shaped pneumatic chamber, the through hole conducts the sand shot inlet, and when the arc-shaped plate-shaped piston valve core moves to the other end of the arc-shaped pneumatic chamber, the arc-shaped plate-shaped piston valve core closes the sand shot inlet.

[0009] Furthermore, the air supply mechanism includes an air compressor, which is connected to an air tank via a one-way valve. The air tank provides a power source for the sand shot regulating valve and sand blasting via the one-way valve. The air tank is provided with an air pressure sensor, which is electrically connected to a controller, and the controller is electrically connected to the air compressor.

[0010] Furthermore, the sand and shot circulation mechanism includes a drum-type screen filter for screening sand and shots of different particle sizes.

[0011] The above technical solution provided by the embodiment of the utility model has the following advantages compared with the prior art:

[0012] The nozzle body of the sandblasting nozzle for multi-grained sand shots provided in the present application is provided with multiple sand shot inlets, supports the connection of multiple sand inlet pipelines, and is provided with a sand shot regulating valve for controlling whether the sand shot inlet is connected. The sand shot regulating valve controls which size of sand shots are used for sandblasting, thereby supporting the sandblasting process of sand shots of various sizes, helping to optimize the sandblasting process design and improve the sandblasting efficiency. In the present application, the sand shot regulating valve is driven by the overall air source-air supply mechanism of sandblasting, and the air supply mechanism reuses and saves the overall structure, which is conducive to reducing costs.

[0013] In the present application, the controller adjusts the length of each electric telescopic rod to control the angle between the connecting seat and the sandblasting nozzle connecting seat, thereby achieving fine adjustment of the orientation of the nozzle body and improving the flexibility and multi-axis processing capability of the nozzle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 A schematic diagram of a sandblasting nozzle supporting multi-size sand shots provided by an embodiment of the utility model;

[0017] Figure 2 A cross-sectional view of a sand shot regulating valve and a nozzle body provided in an embodiment of the utility model;

[0018] Figure 3 A cross-sectional view of a sand shot regulating valve provided in an embodiment of the utility model;

[0019] Figure 4 A schematic diagram of the state of a two-position three-way reversing valve provided in an embodiment of the utility model;

[0020] Figure 5 A schematic diagram of a first universal joint provided in an embodiment of the utility model.

[0021] The symbols and their meanings in the figure are as follows:

[0022] 1. Nozzle body, 11. Sand shot inlet;

[0023] 2. sand shot regulating valve, 21. annular sand shot regulating valve body, 22. sand shot inlet, 23. arc-shaped pneumatic chamber, 24. arc-shaped plate-shaped piston valve core, 25. through hole;

[0024] 3. Sand inlet pipeline;

[0025] 4. Intake pipe;

[0026] 5. Sandblasting nozzle seat, 51. Connecting seat, 52. First universal joint, 521. Connecting fork 1, 522. Ball joint, 523. Connecting fork 2, 53. Electric telescopic rod, 54. Second universal joint, 55. Sandblasting nozzle connecting seat. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0029] See also Figure 1 As shown, the embodiment of the utility model provides a sandblasting nozzle supporting multi-size sand shots, including:

[0030] A sandblasting nozzle seat 5 is provided with a nozzle body 1, and a plurality of sand pill inlets 11 are provided on the side wall of the nozzle body 1. A sand pill regulating valve 2 for controlling whether the sand pill inlet is conductive is provided at each of the sand pill inlets 11. Each of the sand pill regulating valves 2 is connected to a sand inlet pipeline 3 respectively. The tail end of the nozzle body 1 is connected to an air intake pipe 4. The air intake pipe 4 and the sand pill regulating valve 2 are connected to an air supply mechanism. The air supply mechanism includes an air compressor. The air compressor is connected to an air storage tank via a one-way valve. The air storage tank provides a power source for the sand pill regulating valve 2 and sandblasting via a one-way valve. The air storage tank is provided with an air pressure sensor, and the air pressure sensor is electrically connected to a controller, and the controller is electrically connected to the air compressor. When the air pressure is lower than a set value, the controller controls the air compressor to pressurize the air into the air storage tank to ensure gas supply. The sand inlet pipeline 3 is connected to a sand pill circulation mechanism. Since the present application needs to support multi-size sand and pill operations, the sand and pill circulation mechanism includes a rotary drum screen filter for screening sand and pills of different sizes. Sand and pills of different sizes are screened out by the rotary drum screen filter, and under the control of the sand and pill circulation mechanism, sand and pills of different sizes are circulated separately.

[0031] In the specific implementation process, refer to Figure 1 , Figure 2 and Figure 3 As shown, Figure 1A schematic diagram of a blasting nozzle with four shot inlets supporting multi-size shot is given. Figure 2 for Figure 1 Cross-sectional view of the nozzle body and the shot control valve. Figure 3 for Figure 2 Detailed structural diagram of the sand shot regulating valve. The nozzle body 1 is provided with an airway along the axial direction, the end of the airway converges, four inclined sand shot inlets 11 are provided in the airway, the axis of the sand shot inlet 11 forms an acute angle with the air source direction of the airway, and a sand shot regulating valve 2 is provided outside the nozzle body 1, and the sand shot regulating valve 2 controls whether the sand shot inlet is open. Figure 2 and Figure 3 As shown, the sand shot regulating valve 2 comprises: an annular sand shot regulating valve body 21 arranged outside the nozzle body 1, the annular sand shot regulating valve body 21 is provided with a corresponding sand shot inlet 22 corresponding to each sand shot inlet 11, the annular sand shot regulating valve body 21 is provided with a corresponding arc-shaped pneumatic chamber 23 corresponding to each sand shot inlet 11, and pneumatic pipelines are respectively arranged at both ends of the arc-shaped pneumatic chamber 23, and the two pneumatic pipelines are connected at Figure 3 AB are used to distinguish respectively, the two pneumatic pipelines of each arc-shaped pneumatic chamber 23 are connected to the corresponding two-position three-way reversing valve to realize pneumatic gas reversing, the two-position three-way reversing valve is connected to the air supply mechanism, an arc-shaped plate-shaped piston valve core 24 is slidably arranged in the arc-shaped pneumatic chamber 23, the inner side of the arc-shaped plate-shaped piston valve core 24 fits the outer wall of the nozzle body 1, the arc-shaped plate-shaped piston valve core 24 fits the wall of the arc-shaped pneumatic chamber 23, a through hole 25 is arranged on the arc-shaped plate-shaped piston valve core 24, when the arc-shaped plate-shaped piston valve core 24 moves to one end of the arc-shaped pneumatic chamber 23, the through hole 25 conducts the sand shot inlet 11, and when the arc-shaped plate-shaped piston valve core 24 moves to the other end of the arc-shaped pneumatic chamber 23, the arc-shaped plate-shaped piston valve core 24 closes the sand shot inlet 11.

[0032] Combination Figure 3 and Figure 4 As shown, Figure 4 Two working states of the two-position three-way reversing valve are given. When working, the air supply mechanism provides pneumatic gas. Figure 4 In the upper state, the gas of the gas supply mechanism is supplied to the arc-shaped pneumatic chamber 23 below the arc-shaped plate-shaped piston valve core 24 through the pneumatic pipeline A, and the pneumatic gas in the arc-shaped pneumatic chamber 23 above the arc-shaped plate-shaped piston valve core 24 is discharged through the pneumatic pipeline B, and the arc-shaped plate-shaped piston valve core 24 moves upward, so that the sand shot inlet 11 is conductive. Figure 4 In the lower state, the pneumatic gas of the air supply mechanism is supplied to the arc-shaped pneumatic chamber 23 on the upper side of the arc-shaped plate-shaped piston valve core 24 through the pneumatic pipeline B, and the pneumatic gas in the arc-shaped pneumatic chamber 23 on the lower side of the arc-shaped plate-shaped piston valve core 24 is discharged through the pneumatic pipeline A, and the arc-shaped plate-shaped piston valve core 24 moves downward, so that the sand shot inlet 11 is closed.

[0033] In the specific implementation process, the sandblasting nozzle seat 5 includes: a connection seat 51 connected to the sandblasting mechanical arm and a sandblasting nozzle connection seat 55 for fixing the sandblasting nozzle, wherein three first universal joint seats are arranged circumferentially on the connection seat 51, and two first universal joints 52 are fixedly arranged on each of the first universal joint seats, and three second universal joint seats are arranged circumferentially on the sandblasting nozzle connection seat 55, and two second universal joints 54 are fixedly arranged on each of the second universal joint seats, wherein the two second universal joints 54 on each of the second universal joint seats are respectively connected to the adjacent first universal joints 52 on the two adjacent first universal joint seats through the electric telescopic rod 53; the middle parts of the connection seat 51 and the sandblasting nozzle connection seat 55 are both provided with perforations, and the middle part of the sandblasting nozzle connection seat 55 is provided with a sandblasting nozzle fixing frame, and the sandblasting nozzle fixing frame fixes the nozzle body 1 passing through the middle perforation of the sandblasting nozzle connection seat 55. The electric telescopic rod 53 is a linear motor telescopic rod, and the linear motor telescopic rod is electrically connected to the controller through the driving circuit. The controller adjusts the length of each electric telescopic rod to control the angle between the connecting seat 51 and the sandblasting nozzle connecting seat 55, so as to achieve fine adjustment of the direction of the nozzle body 1.

[0034] like Figure 5 As shown, the first universal joint 52 and the second universal joint 54 are ball and fork type universal joints. Taking the first universal joint 52 as an example, the first universal joint 52 includes: a ball joint 522 provided with a cross shaft, a pair of shafts of the ball joint 522 are connected to connecting fork 1 521, and another pair of shafts of the ball joint 522 are connected to connecting fork 2 523.

[0035] In the embodiments provided by the present utility model, it should be understood that the disclosed structure can be implemented in other ways. For example, the structural embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, structures or units, which can be electrical, mechanical or other forms.

[0036] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0037] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0038] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A sandblasting nozzle supporting multi-size sand shots, characterized in that: include: A sandblasting nozzle seat (5), wherein a nozzle body (1) is arranged on the sandblasting nozzle seat (5), a plurality of sand shot inlets (11) are arranged on the side wall of the nozzle body (1), each of the sand shot inlets (11) is provided with a sand shot regulating valve (2) for controlling whether the sand shot inlet is open, each of the sand shot regulating valves (2) is connected to a sand inlet pipeline (3), the tail end of the nozzle body (1) is connected to an air inlet pipe (4), the air inlet pipe (4) and the sand shot regulating valve (2) are connected to an air supply mechanism, and each of the sand inlet pipelines (3) is connected to a sand shot circulation mechanism.

2. The sandblasting nozzle supporting multi-size sand shots according to claim 1, characterized in that: The sandblasting nozzle seat (5) comprises: a connection seat (51) connected to a sandblasting mechanical arm and a sandblasting nozzle connection seat (55) for fixing a sandblasting nozzle, wherein three first universal joint seats are arranged circumferentially on the connection seat (51), and two first universal joints (52) are fixedly arranged on each of the first universal joint seats; three second universal joint seats are arranged circumferentially on the sandblasting nozzle connection seat (55), and two second universal joints (54) are fixedly arranged on each of the second universal joint seats, wherein the two second universal joints (54) on each of the second universal joint seats are respectively connected to adjacent first universal joints (52) on two adjacent first universal joint seats via an electric telescopic rod (53); the middle parts of the connection seat (51) and the sandblasting nozzle connection seat (55) are both provided with perforations, and the middle part of the sandblasting nozzle connection seat (55) is provided with a sandblasting nozzle fixing frame, and the sandblasting nozzle fixing frame fixes the nozzle body (1) passing through the middle part perforation of the sandblasting nozzle connection seat (55).

3. The sandblasting nozzle supporting multi-size sand shots according to claim 2, characterized in that: The first universal joint (52) and the second universal joint (54) are ball-fork universal joints.

4. The sandblasting nozzle supporting multi-size sand shots according to claim 2, characterized in that: The electric telescopic rod (53) is a linear motor telescopic rod, and the linear motor telescopic rod is electrically connected to the controller via a driving circuit.

5. The sandblasting nozzle supporting multi-size sand shots according to claim 1, characterized in that: The sand shot regulating valve (2) comprises: an annular sand shot regulating valve body (21) arranged outside the nozzle body (1), the annular sand shot regulating valve body (21) being provided with a corresponding sand shot inlet (22) corresponding to each sand shot inlet (11), the annular sand shot regulating valve body (21) being provided with a corresponding arc-shaped pneumatic chamber (23) corresponding to each sand shot inlet (11), pneumatic pipelines being respectively arranged at both ends of the arc-shaped pneumatic chamber (23), the two pneumatic pipelines of each arc-shaped pneumatic chamber (23) being connected to a corresponding two-position three-way reversing valve, each of the two-position three-way reversing valves being connected to an air supply mechanism, and the two-position three-way reversing valve being electrically connected to a controller via a valve control circuit; the arc-shaped An arc-shaped plate-shaped piston valve core (24) is slidably arranged in the pneumatic chamber (23), the inner side of the arc-shaped plate-shaped piston valve core (24) is in contact with the outer wall of the nozzle body (1), the arc-shaped plate-shaped piston valve core (24) is in contact with the wall of the arc-shaped pneumatic chamber (23), a through hole (25) is arranged on the arc-shaped plate-shaped piston valve core (24), when the arc-shaped plate-shaped piston valve core (24) moves to one end of the arc-shaped pneumatic chamber (23), the through hole (25) connects the sand shot inlet (11), and when the arc-shaped plate-shaped piston valve core (24) moves to the other end of the arc-shaped pneumatic chamber (23), the arc-shaped plate-shaped piston valve core (24) closes the sand shot inlet (11).

6. The sandblasting nozzle supporting multi-size sand shots according to claim 1, characterized in that: The air supply mechanism comprises an air compressor, the air compressor is connected to an air tank via a one-way valve, the air tank provides a power source for the sand shot regulating valve (2) and sandblasting via the one-way valve, the air tank is provided with an air pressure sensor, the air pressure sensor is electrically connected to a controller, and the controller is electrically connected to the air compressor.

7. The sandblasting nozzle supporting multi-size sand shots according to claim 1, characterized in that: The sand and pill circulation mechanism comprises a rotary drum screen filter for screening sand and pills of different particle sizes.

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