Sand blasting gun head and sand blasting device

Abstract

The utility model provides a sand blasting gun head. The sand blasting gun head comprises a gun head body and a sleeving assembly. The gun head body comprises a connector, a spray pipe, a first pipe cavity and a plurality of internal nozzles, the spray pipe is mounted on the connector, the first pipe cavity is formed in the spray pipe, and the internal nozzles are formed in the side wall of the spray pipe and communicated with the first pipe cavity. The sleeving assembly comprises a spraying sleeve and external nozzles, the spraying sleeve detachably sleeves the end, away from the connector, of the spraying pipe, the external nozzles are all formed in the side wall of the spraying sleeve, and the spraying sleeve is configured to be capable of rotating relative to the spraying pipe so that the external nozzles can selectively communicate with any internal nozzle. The utility model further provides a sand blasting device which comprises a sand blasting gun head and a sand blasting body, and the sand blasting gun head is installed on the sand blasting body. Compared with the prior art, the sand blasting gun head provided by the utility model is beneficial to shortening the cleaning time and further beneficial to improving the cleaning efficiency. In addition, the application range can be widened, and the use convenience can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a sandblasting gun head and a sandblasting device. Background Art

[0002] Dental caries, commonly known as tooth decay or cavities, is a chronic, progressive, and destructive disease that occurs in the hard tissues of the tooth mediated by oral bacteria. If dental caries is not treated in time, it will gradually develop into pulpitis and periapical periodontitis, and in severe cases, it will develop into osteomyelitis and maxillofacial cellulitis, affecting the patient's quality of life. The purpose of dental caries treatment is to terminate the pathological process, prevent its further development, and restore the original shape and function of the tooth. Currently, for the treatment of dental caries, methods such as drug treatment, filling, inlay, or artificial crown are usually used. Before treatment, it is necessary to remove the carious tissue first to prevent the further development of dental caries. Because the high-speed turbine drill for caries removal is efficient and fast, and it is convenient to prepare the cavity type, it has become the main clinical method for removing carious tissue. However, the traditional high-speed turbine drill for caries removal cuts the tooth body quickly, cannot selectively remove carious tissue, and is prone to excessive preparation of the tooth body. At the same time, the heat generated when grinding the carious dentin or tooth tissue near the pulp is likely to stimulate the pulp, and the patient may feel uncomfortable with heat stimulation after the operation. At the same time, the vibration and noise generated are likely to cause discomfort to the patient. Compared with the high-speed turbine rotary handpiece, the abrasive particles of air sandblasting are smaller, more precise when removing carious dentin, can selectively remove dental caries and enamel without a base, can more precisely remove carious dentin while retaining normal tooth tissue, and is more minimally invasive. However, in the actual application process, due to the different positions of the carious tissue, medical staff need to select the corresponding gun head according to the position of the carious tissue so that the sandblasting direction is directly opposite to the carious tissue. During the treatment process, medical staff need to frequently change the gun head, resulting in an increase in cleaning time and a reduction in cleaning efficiency. Summary of the Utility Model

[0003] The purpose of the embodiments of the present application is to provide a sandblasting gun head and a sandblasting device to solve the technical problem of the reduction in cleaning efficiency caused by frequent gun head replacement in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the present application is: to provide a sandblasting gun head, including:

[0005] A gun head main body, the gun head main body includes a connecting head, a spray pipe, a first lumen, and a plurality of internal spray ports. The spray pipe is installed on the connecting head. The first lumen is opened in the spray pipe. A plurality of the internal spray ports are all opened on the side wall of the spray pipe, communicate with the first lumen, and are arranged at intervals;

[0006] Socket component, the socket component includes a spray sleeve and an external spray port. The spray sleeve is detachably sleeved on one end of the spray pipe away from the connector. The external spray ports are all opened on the side wall of the spray sleeve. The spray sleeve is configured to be able to rotate relative to the spray pipe so that the external spray port can selectively communicate with any one of the internal spray ports.

[0007] Optionally, the spray sleeve includes a first sleeve. The external spray port is opened on the side wall of the first sleeve. The first sleeve is sleeved on one end of the spray pipe close to the connector and is screwed to the spray pipe, and is also configured to be able to move relative to the spray pipe after rotating relative to the spray pipe.

[0008] Optionally, the spray sleeve further includes a second sleeve and a second lumen. One end of the second sleeve is connected to one end of the first sleeve away from the connector and is received in the first sleeve and moves synchronously with the first sleeve. The second lumen is opened in the second sleeve and communicates with the first lumen. The socket component further includes a plug. The plug is detachably installed on the second sleeve and can block the second lumen.

[0009] Optionally, the socket component further includes a pin. The pin sequentially passes through one end of the first sleeve away from the connector, one end of the second sleeve away from the connector, and one end of the plug away from the connector.

[0010] Optionally, the pin includes a first pin rod and a second pin rod. The first pin rod sequentially passes through one end of the first sleeve away from the connector, one end of the second sleeve away from the connector, and one end of the plug away from the connector. The second pin rod is connected to one end of the first pin rod and elastically abuts against the outside of the first sleeve.

[0011] Optionally, the second pin rod surrounds the outside of the first sleeve around the axis of the first sleeve. The length of the second pin rod is greater than one-fourth of the outer circumference of the first sleeve and less than one-half of the outer circumference of the first sleeve.

[0012] Optionally, the plug includes a plug rod and a plug block. The plug rod is received in the second lumen. The plug block is connected to one end of the plug rod away from the connector.

[0013] Optionally, a first guiding surface is opened at one end of the plug rod close to the connector. The first guiding surface is roughly opposite to the external spray port.

[0014] Optionally, a second guiding surface is opened at one end of the second sleeve close to the connector. The second guiding surface is roughly opposite to the external spray port.

[0015] The present application also provides a sandblasting device, including the sandblasting gun head and the sandblasting main body, and the sandblasting gun head is installed on the sandblasting main body.

[0016] The beneficial effects of the sandblasting gun head provided by the present application are as follows:

[0017] For the sandblasting gun head provided by the present application, medical staff can rotate the spray sleeve according to the position of the carious tissue, so that the external spray port communicates with the corresponding internal spray port. Compared with the related technology that requires first removing the gun head main body to replace the corresponding gun head main body, in this embodiment, it only requires medical staff to rotate the spray sleeve, without disassembling and installing the gun head main body, reducing the replacement time, helping to shorten the cleaning time, and thus helping to improve the cleaning efficiency. Moreover, through multiple internal spray ports, carious tissues at different positions can be cleaned, which helps to improve the scope of application and also helps to improve the convenience of use. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a perspective view of the sandblasting gun head provided in Embodiment 1 of the present application;

[0020] Figure 2 It is a cross-sectional view of the sandblasting gun head provided in Embodiment 1 of the present application (when idle);

[0021] Figure 3 It is a cross-sectional view of the sandblasting gun head provided in Embodiment 1 of the present application (when sandblasting);

[0022] Figure 4 It is a perspective view of the internal structure of the sandblasting gun head provided in Embodiment 1 of the present application;

[0023] Figure 5 It is a cross-sectional view of the sandblasting gun head provided in Embodiment 2 of the present application;

[0024] Figure 6 It is a cross-sectional view of the sandblasting gun head provided in Embodiment 3 of the present application.

[0025] Among them, the reference numerals in the drawings are as follows:

[0026] 100, gun head main body; 110, connecting head; 120, spray pipe; 130, first lumen; 140, internal spray port;

[0027] 200. Socket component; 210. Spray sleeve; 211. First sleeve; 212. Second sleeve; 213. Second lumen; 214. Second guiding surface; 220. External spray nozzle; 230. Plug; 231. Plug rod; 232. Plug block; 233. First guiding surface; 240. Pin; 241. First pin rod; 242. Second pin rod. Detailed implementation manners

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0032] Embodiment 1

[0033] As Figures 1 to 4As shown in the figure, the present application provides a sandblasting gun head, which includes a gun head main body 100 and a socket assembly 200. The gun head main body 100 includes a connecting head 110, a nozzle 120, a first lumen 130, and a plurality of internal nozzles 140. The nozzle 120 is installed on the connecting head 110. The first lumen 130 is opened in the nozzle 120. The plurality of internal nozzles 140 are all opened on the side wall of the nozzle 120, communicate with the first lumen 130, and are arranged at intervals. The socket assembly 200 includes a spray sleeve 210 and an external nozzle 220. The spray sleeve 210 is detachably sleeved on one end of the nozzle 120 away from the connecting head 110. The external nozzles 220 are all opened on the side wall of the spray sleeve 210. The spray sleeve 210 is configured to be able to rotate relative to the nozzle 120 so that the external nozzle 220 can selectively communicate with any one of the internal nozzles 140.

[0034] It should be noted here that in this embodiment, the number of internal nozzles 140 is set to two as an example for illustration. Of course, in other embodiments, according to actual application requirements, the number of internal nozzles 140 can also be set to three, four, five... other numbers, which are not uniquely limited here. In this embodiment, please refer to Figure 2 , one of the internal nozzles 140 is located on the left side of the nozzle 120, and the other internal nozzle 140 is located on the right side of the nozzle 120.

[0035] It should also be noted here that in this embodiment, please refer to Figure 2 together, which is an example of the internal nozzle 140 deflecting towards the end of the nozzle 120 away from the connecting head 110, that is, the angle between the axis of the internal nozzle 140 and the axis of the nozzle 120 is set to an acute angle. Of course, in other embodiments, the angle between the axis of the first internal nozzle 140 and the axis of the nozzle 120 is set to a right angle; or, the angle between the axis of the internal nozzle 140 and the axis of the nozzle 120 is set to an obtuse angle.

[0036] Specifically, when using this device, when the carious tissue is located on the left side of the nozzle 120, the medical staff rotates the spray sleeve 210 to drive the spray sleeve 210 to move relative to the nozzle 120 until the external nozzle 220 is directly opposite the internal nozzle 140 on the left side of the nozzle 120. It should be noted here that when the external nozzle 220 communicates with the internal nozzle 140 on the left side, the spray sleeve 210 shields the internal nozzle 140 on the right side, and the dental abrasive powder can only be ejected from the internal nozzle 140 on the left side. When the carious tissue is located on the right side of the nozzle 120, the medical staff rotates the spray sleeve 210 to drive the spray sleeve 210 to move relative to the nozzle 120 until the external nozzle 220 is directly opposite the internal nozzle 140 on the right side of the nozzle 120. It should be noted here that when the external nozzle 220 communicates with the internal nozzle 140 on the right side, the spray sleeve 210 shields the internal nozzle 140 on the left side, and the dental abrasive powder can only be ejected from the internal nozzle 140 on the right side.

[0037] More specifically, when using the device, medical staff can adjust the overlapping area between the external nozzle 220 and the internal nozzle 140 by rotating the spray sleeve 210, so as to adjust the size of the sandblasting nozzle, and further adjust the powder output according to the actual application requirements.

[0038] For the sandblasting gun head provided in this application, medical staff can make the external nozzle 220 communicate with the corresponding internal nozzle 140 by rotating the spray sleeve 210 according to the position of the carious tissue. Compared with the related technology that requires removing the gun head body 100 first and replacing the corresponding gun head body 100, in this embodiment, it only requires medical staff to rotate the spray sleeve 210, without disassembling and installing the gun head body 100, reducing the replacement time, helping to shorten the cleaning time, and further helping to improve the cleaning efficiency. Moreover, in addition, through multiple internal nozzles 140, carious tissues at different positions can be cleaned, which helps to increase the scope of application and also helps to improve the convenience of use.

[0039] In an embodiment of this application, please refer to Figures 1 to 4 , the spray sleeve 210 includes a first sleeve 211, the external nozzle 220 is opened on the side wall of the first sleeve 211, the first sleeve is arranged at one end of the spray pipe 120 close to the connector 110, and is screwed to the spray pipe 120, and is also configured to be able to move relative to the spray pipe 120 after rotating relative to the spray pipe 120.

[0040] With such a setting, the first sleeve 211 is screwed to the spray pipe 120, so the first sleeve 211 can achieve a detachable connection design with the spray pipe 120, and the disassembly and installation are convenient. Moreover, the first sleeve 211 and the spray pipe 120 are screwed, and during the cleaning process, it can prevent the first sleeve 211 from moving relative to the spray pipe 120 under the action of high-speed air flow, resulting in the inability to eject dental abrasive powder. By rotating the first sleeve 211, the first sleeve 211 can move relative to the spray pipe 120, enabling the external nozzle 220 to face any external nozzle 220, and the adjustment is convenient.

[0041] In an embodiment of this application, please refer to Figures 1 to 4 together, the spray sleeve 210 further includes a second sleeve 212 and a second lumen 213. One end of the second sleeve 212 is connected to the end of the first sleeve 211 away from the connector 110, and is received in the first sleeve 211 and moves synchronously with the first sleeve 211. The second lumen 213 is opened in the second sleeve 212 and communicates with the first lumen 130. The socket assembly 200 further includes a plug 230, and the plug 230 is detachably installed on the second sleeve 212 and can block the second lumen 213.

[0042] When the carious tissue is located on the left side of the nozzle 120, the medical staff rotates the first sleeve 211 to move the first sleeve 211 relative to the nozzle 120. Driven by the first sleeve 211, the second sleeve 212 also moves relative to the nozzle 120 until the second sleeve 212 no longer shields the two internal nozzles 140. Continue to rotate the first sleeve 211 until the external nozzle 220 is aligned with the internal nozzle 140 on the left side of the nozzle 120. It should be noted here that when the external nozzle 220 is in communication with the internal nozzle 140 on the left side, the second sleeve 212 shields the internal nozzle 140 on the right side, and the plug 230 shields the second lumen 213, and the dental abrasive powder can only be ejected from the internal nozzle 140 on the left side.

[0043] When the carious tissue is located on the right side of the nozzle 120, the medical staff rotates the first sleeve 211 to move the first sleeve 211 relative to the nozzle 120. Driven by the first sleeve 211, the second sleeve 212 also moves relative to the nozzle 120 until the second sleeve 212 no longer shields the two internal nozzles 140. Continue to rotate the first sleeve 211 until the external nozzle 220 is aligned with the internal nozzle 140 on the right side of the nozzle 120. It should be noted here that when the external nozzle 220 is in communication with the internal nozzle 140 on the right side, the second sleeve 212 shields the internal nozzle 140 on the left side, and the plug 230 shields the second lumen 213, and the dental abrasive powder can only be ejected from the internal nozzle 140 on the right side.

[0044] When the carious component is facing the nozzle 120, the medical staff rotates the first sleeve 211 to move the first sleeve 211 relative to the nozzle 120. Driven by the first sleeve 211, the second sleeve 212 also moves relative to the nozzle 120 until the second sleeve 212 shields the two internal nozzles 140. The medical staff removes the plug 230 from the second lumen 213. At this time, the second lumen 213 is in communication with the first lumen 130, and the dental abrasive powder can only be ejected from the second lumen 213.

[0045] With such a setting, by removing the plug 230, the first lumen 130 and the second lumen 213 can be made to communicate, so that the dental abrasive powder can be ejected between the multiple internal nozzles 140. With the cooperation of the external nozzle 220 and the multiple internal nozzles 140, the sandblasting direction of the sandblasting gun head can be increased, which helps to further improve the application range of the device and the convenience of use. By using the second sleeve 212 and being driven by the first sleeve 211, it is possible to select whether to shield the multiple internal nozzles 140 according to the position of the carious tissue, so that the dental abrasive powder can be ejected from the designated passage. Moreover, by using the second sleeve 212, it is convenient to open the second lumen 213. With the cooperation of the plug 230, it is possible to select whether to block the second lumen 213 according to the position of the carious tissue, and the dental abrasive powder can also be ejected from the designated passage.

[0046] In one embodiment of the present application, referring to Figures 1 to 4 , the socket assembly 200 further includes a pin 240, and the pin 240 sequentially passes through one end of the first sleeve 211 away from the connector 110, one end of the second sleeve 212 away from the connector 110, and one end of the plug 230 away from the connector 110.

[0047] With such a setting, after the plug 230 is inserted into the second sleeve 212, the plug 230 can be fixed in the second sleeve 212 by inserting the pin 240. By pulling out the pin 240, the plug 230 can be withdrawn from the second sleeve 212. In summary, by using the pin 240, the plug 230 can be detachably connected to the second sleeve 212, and the disassembly and installation are convenient, which helps to improve the convenience of use.

[0048] In one embodiment of the present application, please refer to Figures 1 to 4 , the pin 240 includes a first pin rod 241 and a second pin rod 242. The first pin rod 241 sequentially passes through one end of the first sleeve 211 away from the connector 110, one end of the second sleeve 212 away from the connector 110, and one end of the plug 230 away from the connector 110. The second pin rod 242 is connected to one end of the first pin rod 241 and elastically abuts against the outside of the first sleeve 211.

[0049] With such a setting, by using the first pin rod 241, the movement of the plug 230 relative to the second sleeve 212 can be prevented, which helps to improve the connection stability between the plug 230 and the second sleeve 212. By using the second pin rod 242, the movement of the first pin rod 241 relative to the first sleeve 211, the second sleeve 212, and the plug 230 can be prevented, which helps to improve the connection stability between the first pin rod 241 and the first sleeve 211, the second sleeve 212, and the plug 230, so that the first pin rod 241 is not easily disengaged.

[0050] In one embodiment of the present application, please refer to Figures 1 to 4 together, the second pin rod 242 surrounds the outside of the first sleeve 211 around the axis of the first sleeve 211, and the length of the second pin rod 242 is greater than one-fourth of the outer circumference of the first sleeve 211 and less than one-half of the outer circumference of the first sleeve 211.

[0051] With such a setting, since the length of the second pin rod 242 is greater than one-fourth of the outer circumference of the first sleeve 211 and less than one-half of the outer circumference of the first sleeve 211, the second pin rod 242 can be stably clamped around the outer periphery of the first sleeve 211 under the cooperation of the first pin rod 241. Furthermore, the first pin rod 241 can be stably installed in the first sleeve 211, the second sleeve 212, and the plug 230, which helps to further improve the connection stability between the first pin rod 241 and the first sleeve 211, the second sleeve 212, and the plug 230. Therefore, when the carious tissue is located on both sides of the nozzle 120, dental abrasive powder can be prevented from spraying out from the second lumen 213.

[0052] In an embodiment of the present application, referring to Figures 1 to 4 , the plug 230 includes a plug rod 231 and a plug block 232. The plug rod 231 is received in the second lumen 213, and the plug block 232 is connected to one end of the plug rod 231 away from the connector 110.

[0053] With such a setting, by using the plug block 232, when the plug rod 231 is installed into the second sleeve 212, it can be prevented that the plug rod 231 moves excessively and enters the first lumen 130, and further, it can be prevented that the plug rod 231 affects the spraying of dental abrasive powder in the first lumen 130. Moreover, when the plug rod 231 is installed into the second sleeve 212, the plug rod 231 can be positioned under the cooperation of the second sleeve 212, which is convenient for the first pin rod 241 to pass through the plug rod 231 and helps to improve the convenience of use.

[0054] In an embodiment of the present application, please refer to Figures 1 to 4 , a first guiding surface 233 is provided at one end of the plug rod 231 close to the connector 110, and the first guiding surface 233 generally faces the external nozzle 220. A second guiding surface 214 is provided at one end of the second sleeve 212 close to the connector 110, and the second guiding surface 214 generally faces the external nozzle 220.

[0055] Specifically, when the carious tissue is located on the left side of the nozzle 120, the first sleeve 211 is rotated to connect the external nozzle 220 to the internal nozzle 140 on the left side. At this time, both the first guiding surface 233 and the second guiding surface 214 face the internal nozzle 140 on the left side, that is, the second sleeve 212 can shield the internal nozzle 140 on the right side. When the carious tissue is located on the right side of the nozzle 120, the first sleeve 211 is rotated to connect the external nozzle 220 to the internal nozzle 140 on the right side. At this time, both the first guiding surface 233 and the second guiding surface 214 face the internal nozzle 140 on the right side, that is, the second sleeve 212 can shield the internal nozzle 140 on the left side.

[0056] With such a setting, when using multiple internal nozzles 140 to eject dental abrasive powder, by adopting the first guiding surface 233 and the second guiding surface 214, the second sleeve 212 can connect one of the internal nozzles 140 to the external nozzle 220 and can completely shield the remaining internal nozzles 140. With the cooperation of the first sleeve 211, double shielding can be achieved, and the shielding effect is good. In addition, when ejecting dental abrasive powder, the first guiding surface 233 and the second guiding surface 214 can guide the dental abrasive powder to be ejected from the internal nozzle 140, enabling the dental abrasive powder to be ejected quickly.

[0057] The present application also provides a sandblasting device, including a sandblasting gun head and a sandblasting main body (not shown in the figure), and the sandblasting gun head is installed on the sandblasting main body.

[0058] Optionally, the outer periphery of the spray pipe 120 has a plurality of first scales (not shown in the figure), and the plurality of first scales are respectively arranged in one-to-one correspondence with the plurality of internal nozzles 140. The outer periphery of the first sleeve 211 has a second scale (not shown in the figure), and the second scale is arranged corresponding to the external nozzle 220.

[0059] With such a setting, through the first scale and the second scale, it is convenient for medical staff to align the external nozzle 220 with the internal nozzle 140, which helps to improve the convenience of use.

[0060] Embodiment 2

[0061] The embodiment of the present application is basically the same as Embodiment 1, and the only difference is that the socket assembly 200 only includes the spray sleeve 210 and the external nozzle 220.

[0062] With such a setting, sandblasting can be performed from the internal nozzles 140 at different positions.

[0063] Embodiment 3

[0064] The embodiment of the present application is basically the same as Embodiment 1, and the only difference is that the socket assembly 200 only includes the spray sleeve 210.

[0065] With such a setting, sandblasting can be performed from the second lumen 213.

[0066] The sandblasting device provided by the present application can eject dental abrasive powder from different directions, without the need to frequently replace the sandblasting gun head, and has a high cleaning efficiency.

[0067] One or more embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application shall be included within the protection scope of the present application.

Claims

1. A sandblasting gun head, characterized in that: include: A gun head body (100), the gun head body (100) comprising a connecting head (110), a nozzle (120), a first tube cavity (130) and a plurality of internal nozzles (140), the nozzle (120) being mounted on the connecting head (110), the first tube cavity (130) being disposed in the nozzle (120), the plurality of internal nozzles (140) being disposed on a side wall of the nozzle (120), being connected to the first tube cavity (130) and being arranged at intervals; A sleeve assembly (200), the sleeve assembly (200) comprising a spray sleeve (210) and an external nozzle (220), the spray sleeve (210) being detachably sleeved on an end of the nozzle (120) away from the connector (110), the external nozzles (220) being all opened on the side wall of the spray sleeve (210), the spray sleeve (210) being configured to be rotatable relative to the nozzle (120) so that the external nozzles (220) can selectively connect to any of the internal nozzles (140).

2. The sandblasting gun head according to claim 1, characterized in that: The spray sleeve (210) comprises a first sleeve (211), the external nozzle (220) being opened on a side wall of the first sleeve (211), the first sleeve being arranged at an end of the nozzle (120) close to the connecting head (110) and being screwed to the nozzle (120), and being configured to be movable relative to the nozzle (120) after being rotated relative to the nozzle (120).

3. The sandblasting gun head according to claim 2, characterized in that: The spray sleeve (210) further comprises a second sleeve (212) and a second tube cavity (213), wherein one end of the second sleeve (212) is connected to an end of the first sleeve (211) away from the connector (110), and is received in the first sleeve (211), and moves synchronously with the first sleeve (211), and the second tube cavity (213) is opened in the second sleeve (212) and communicated with the first tube cavity (130); the sleeve assembly (200) further comprises a plug (230), wherein the plug (230) is detachably mounted on the second sleeve (212) and is capable of blocking the second tube cavity (213).

4. The sandblasting gun head according to claim 3, characterized in that: The socket assembly (200) further comprises a latch (240), wherein the latch (240) is sequentially inserted through an end of the first sleeve (211) away from the connector (110), an end of the second sleeve (212) away from the connector (110), and an end of the plug (230) away from the connector (110).

5. The sandblasting gun head according to claim 4, characterized in that: The latch (240) comprises a first pin rod (241) and a second pin rod (242); the first pin rod (241) is sequentially inserted through an end of the first sleeve (211) away from the connector (110), an end of the second sleeve (212) away from the connector (110), and an end of the plug (230) away from the connector (110); the second pin rod (242) is connected to one end of the first pin rod (241) and elastically abuts against the outer side of the first sleeve (211).

6. The sandblasting gun head according to claim 5, characterized in that: The second pin rod (242) surrounds the axis of the first sleeve (211) and is disposed on the outside of the first sleeve (211); the length of the second pin rod (242) is greater than one quarter of the circumference of the outside of the first sleeve (211) and less than one half of the circumference of the outside of the first sleeve (211).

7. The sandblasting gun head according to claim 3, characterized in that: The blocking head (230) comprises a blocking rod (231) and a blocking block (232); the blocking rod (231) is received in the second tube cavity (213); and the blocking block (232) is connected to an end of the blocking rod (231) away from the connecting head (110).

8. The sandblasting gun head according to claim 7, characterized in that: A first guide surface (233) is formed at one end of the blocking rod (231) close to the connecting head (110), and the first guide surface (233) is substantially facing the external nozzle (220).

9. The sandblasting gun head according to claim 3, characterized in that: A second guide surface (214) is formed at one end of the second sleeve (212) close to the connector (110), and the second guide surface (214) is substantially facing the external nozzle (220).

10. A sandblasting device, characterized in that: It comprises a sandblasting gun head as described in any one of claims 1 to 9 and a sandblasting body, wherein the sandblasting gun head is installed on the sandblasting body.

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