Mist spraying device

Abstract

The utility model provides a mist spraying device, and relates to the field of sprayers. In the mist spraying device, a spraying hole is formed in a spraying pipe, and the axis of the spraying hole and the axis of the spraying pipe are not collinear; the plug body is plugged into an inner cavity of the spray pipe; a limiting structure is arranged between the spray pipe and the plug body and used for preventing relative rotation between the plug body and the spray pipe. A pressure relief groove and at least one flow guide channel are arranged between the outer wall of the plug body and the inner wall of the spray pipe; the at least one flow guide channel is used for conveying liquid into the pressure relief groove, and the pressure relief groove is communicated with the spraying hole, so that the liquid can be sprayed out of the spraying hole in an atomized state; according to the technical scheme, after the spraying pipe extends into the long and narrow space and is oriented through depth rotation, the function that targeted mist spraying can be conducted on a specific position on the inner wall of the long and narrow space through the spraying opening is achieved, and the long-term puzzling problems in many engineering fields are solved through the function.

Description

Technical Field

[0001] The utility model relates to the field of sprayers, in particular to a mist spraying device. Background Art

[0002] As we all know, there are a large number of narrow and long spaces in many fine engineering fields. For example, in complex systems such as aircraft engines and refineries, there are a large number of pipelines for transporting water, gas and oil. Usually, these pipelines have various diameters and cover long distances. To ensure that they are in good working condition, it is necessary to regularly inspect the pipelines from the inside and carry out targeted spray repairs on the accident points on the pipe wall in a timely manner.

[0003] However, currently all spray equipment uses a spray head for top spraying. Due to the large spraying area, it is difficult to achieve the function of targeted point spraying and repairing the inner wall of the pipeline. Utility Model Content

[0004] The utility model aims to provide a mist spraying device to solve the problem that the top spraying method of the spray head in the prior art is difficult to achieve the function of targeted fixed-point spraying and repairing the inner wall of the pipeline due to the large spraying area.

[0005] Based on the above purpose, the present application provides a mist spraying device, comprising:

[0006] A nozzle, one end of which is set as a closed end and the other end is set as an open end, the nozzle is provided with a spray hole, and the spray hole is arranged in the closed end area of ​​the nozzle or the side wall of the nozzle; the axis of the spray hole is not colinear with the axis of the nozzle;

[0007] It should be noted that the axis of the above-mentioned nozzle hole refers to the axis passing through the center point of the nozzle hole;

[0008] The plug body is cylindrical and inserted into the inner cavity of the nozzle. A limiting structure is provided between the nozzle and the plug body to prevent the plug body and the nozzle from rotating relative to each other.

[0009] Furthermore, a pressure relief groove and at least one flow guide channel are provided between the outer wall of the plug body and the inner wall of the nozzle;

[0010] At least one of the guide channels is used to transport liquid into the pressure relief groove, and the pressure relief groove is connected to the spray hole, so that the liquid can be sprayed out from the spray hole in an atomized state.

[0011] Furthermore, two guide channels are provided, and the guide channels include a first liquid channel A and a first liquid channel B which are connected;

[0012] The plug body is in close contact with the inner wall of the nozzle, and a narrow and long first plane A or a first groove A is provided on one side of the plug body along its axial direction, and a first liquid channel A is formed between the first plane A or the first groove A and the arc-shaped inner wall of the nozzle;

[0013] The pressure relief groove is arranged on the other side of the plug body;

[0014] A first liquid channel B is provided at the end of the plug body close to the closed end of the nozzle. The first liquid channel B is in a groove shape and is used to connect the first liquid channel A and the pressure relief groove.

[0015] Furthermore, two guide channels are provided, and the guide channels include a first liquid channel C and a first liquid channel D which are connected;

[0016] The plug body is in close contact with the inner wall of the nozzle, and a narrow and long first plane C or a first groove C is provided along the axial direction of one side of the plug body, and a first liquid channel C is formed between the first plane C or the first groove C and the arc-shaped inner wall of the nozzle;

[0017] The pressure relief groove is arranged on the other side of the plug body;

[0018] The first liquid channel D is a hole that penetrates the plug body in a radial direction, and the first liquid channel D is connected to the pressure relief groove and the first liquid channel C respectively.

[0019] Furthermore, the closed end of the nozzle is planar, and the end of the plug body for contacting the closed end is planar.

[0020] Furthermore, the closed end of the nozzle is hemispherical, the end of the plug body for contacting the closed end is hemispherical, and the pressure relief groove and the first liquid channel B are located on the hemispherical surface of the end of the plug body.

[0021] Furthermore, the limiting structure includes matching protrusions and grooves;

[0022] When the protrusion is located on the outer wall of the plug body, the groove is located on the inner wall of the nozzle;

[0023] When the protrusion is located on the inner wall of the nozzle, the groove is located on the outer wall of the plug body.

[0024] Further, the closed end of the nozzle is in the shape of an inclined surface, and the end of the plug body for contacting the closed end is in the shape of an inclined surface, so that the closed end of the nozzle and the end of the plug body cooperate and contact to form the limiting structure, and a flow space for passing liquid is provided between the plug body and the inner wall of the nozzle;

[0025] The pressure relief groove and the flow guide channel are respectively arranged on the end inclined surface of the plug body;

[0026] The guide channels are provided in plurality and are in the shape of grooves, and the plurality of guide channels are distributed around the pressure relief groove.

[0027] Furthermore, two guide channels are provided, and the guide channels include a first liquid channel E and a first liquid channel F which are connected to each other;

[0028] The inner wall of the nozzle is provided with a first narrow groove E along its axial direction, and a first liquid channel E is formed between the first groove E and the arc-shaped outer wall of the plug body;

[0029] The pressure relief groove and the first liquid channel F are respectively arranged at the closed end of the nozzle, and the first liquid channel F is in the shape of a groove;

[0030] The first liquid channel E is communicated with the pressure relief groove through the first liquid channel F.

[0031] Furthermore, the closed end of the nozzle is hemispherical, and the end of the plug body for contacting the closed end is hemispherical.

[0032] Furthermore, the limiting structure includes matching protrusions and grooves;

[0033] The protrusion is located on the outer wall of the plug body, and the groove is located on the inner wall of the nozzle;

[0034] or,

[0035] The protrusion is located on the inner wall of the nozzle, and the groove is located on the outer wall of the plug body.

[0036] By adopting the above technical solution, the mist spray device provided by the present application has the following technical effects compared with the prior art:

[0037] In the mist spray device, a spray hole is provided on the nozzle, and the axis of the spray hole is not colinear with the axis of the nozzle; the plug body is inserted into the inner cavity of the nozzle; a limiting structure is provided between the nozzle and the plug body, which is used to prevent relative rotation between the plug body and the nozzle; and a pressure relief groove and at least one guide channel are provided between the outer wall of the plug body and the inner wall of the nozzle; at least one guide channel is used to transport liquid into the pressure relief groove, and the pressure relief groove is connected with the spray hole, so that the liquid can be sprayed out from the spray hole in an atomized state; the technical solution of the present application realizes the function that after the nozzle is extended into the narrow and long space and is oriented through depth rotation, the nozzle can be used to perform targeted mist spraying on a specific position on the inner wall of the narrow and long space. The realization of this function solves many problems that have long plagued many engineering fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 is a front view of the mist spray device provided in Example 1 of the present application;

[0040] Figure 2 is a schematic structural diagram of the mist spray device provided in Example 1 of the present application from another perspective;

[0041] Figure 3 It is a structural schematic diagram of the plug body in the mist spraying device provided in Example 1 of the present application;

[0042] Figure 4 It is a schematic structural diagram of the plug body in the mist spraying device provided in the first embodiment of the present application from another perspective;

[0043] Figure 5 is a front view of the mist spray device provided in the second embodiment of the present application;

[0044] Figure 6 is a schematic structural diagram of the mist spray device provided in the second embodiment of the present application from another perspective;

[0045] Figure 7 It is a structural schematic diagram of a nozzle in the mist spraying device provided in Example 2 of the present application;

[0046] Figure 8 It is a structural schematic diagram of the plug body in the mist spraying device provided in the second embodiment of the present application;

[0047] Fig. 9 This is a front view of the mist spray device provided in Example 3 of the present application;

[0048] Fig.10 is a schematic structural diagram of the mist spray device provided in the third embodiment of the present application from another perspective;

[0049] Fig.11 It is a structural schematic diagram of the plug body in the mist spray device provided in the third embodiment of the present application;

[0050] Fig.12 It is a schematic structural diagram of the plug body in the mist spraying device provided in the third embodiment of the present application from another perspective;

[0051] Fig.13 is a front view of the mist spray device provided in the fourth embodiment of the present application;

[0052] Fig.14 is a schematic structural diagram of the mist spray device provided in the fourth embodiment of the present application from another perspective;

[0053] Fig.15 It is a structural schematic diagram of the plug body in the mist spray device provided in the fourth embodiment of the present application;

[0054] Fig.16 This is a front view of the mist spray device provided in Example 5 of the present application;

[0055] Fig.17 is a schematic structural diagram of the mist spray device provided in Embodiment 5 of the present application from another perspective;

[0056] Fig.18 It is a schematic structural diagram of a plug body in the mist spray device provided in Example 5 of the present application;

[0057] Fig.19 It is a schematic diagram of the structure of the nozzle in the mist spray device provided in Example 5 of the present application.

[0058] Icons: 100-nozzle; 101, 201-plane; 102, 202-hemispherical surface; 103, 203-inclined surface; 110-spray hole; 120-flow space; 200-plug body; 300-limiting structure; 310-protrusion; 320-groove; 400-pressure relief groove; 500-guide channel; 510-first plane A; 520-first liquid channel B; 530-first plane C; 540-first liquid channel D; 550-first groove E; 560-first liquid channel F. DETAILED DESCRIPTION

[0059] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments 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.

[0060] Embodiment 1

[0061] like Figures 1 to 4 As shown, the present embodiment provides a mist spraying device, comprising a nozzle 100 and a plug body 200;

[0062] One end of the nozzle 100 (the upper end in the figure) is set as a closed end, and the end surface of the closed end is set as a plane 101, and the other end (the lower end in the figure) is set as an open end. The nozzle 100 is provided with a spray hole 110, and the spray hole 110 is arranged close to the side of the closed end;

[0063] The plug body 200 is set to be cylindrical, and the plug body 200 is inserted into the inner cavity of the nozzle 100. The plug body 200 is in close contact with the inner wall of the nozzle 100. The end face of the plug body 200 is set to be a plane 201, which is adapted to the end face shape of the closed end;

[0064] A limiting structure 300 is provided between the nozzle 100 and the plug body 200. The limiting structure 300 is used to prevent the plug body 200 and the nozzle 100 from rotating relative to each other.

[0065] In addition, a pressure relief groove 400 and at least one guide channel 500 are provided between the outer wall of the plug body 200 and the inner wall of the nozzle 100; at least one guide channel 500 is used to transport liquid into the pressure relief groove 400, and the pressure relief groove 400 is connected to the spray hole 110, so that the liquid can be sprayed out from the spray hole 110 in an atomized state.

[0066] Specifically, two guide channels 500 are provided, and the guide channels 500 include a first liquid channel A and a first liquid channel B520 which are connected;

[0067] A narrow and long first plane A510 or a first groove A is provided along the axial direction of one side of the plug body 200. Taking the first plane A510 as an example, a first liquid channel A is formed between the first plane A510 and the arc-shaped inner wall of the nozzle 100.

[0068] The pressure relief groove 400 is disposed on the other side of the plug body 200 , and the pressure relief groove 400 is close to the end of the plug body 200 ;

[0069] A first liquid channel B520 is provided at the end of the plug body 200 close to the closed end of the nozzle 100 . The first liquid channel B520 is in a groove shape and is used to connect the first liquid channel A and the pressure relief groove 400 .

[0070] When in use, liquid is supplied from the open end of the nozzle 100, and the liquid passes through two narrow and long first liquid channels A and two first liquid channels B520 in sequence, which pressurizes the liquid, and then flows into the pressure relief groove 400, and then is sprayed out in the form of mist through the spray hole 110. This realizes the function that after the nozzle 100 is extended into the narrow and long space and is oriented through depth rotation, the spray hole 110 on the side of the nozzle 100 can perform targeted mist spraying on a specific position on the inner wall of the narrow and long space.

[0071] Embodiment 2

[0072] like Figures 5 to 8 As shown, the structure of a mist spray device provided in this embodiment is similar to that of the mist spray device in the first embodiment, except that: the end surface of the closed end of the nozzle 100 is set as a hemispherical surface 102, and the nozzle 100 is provided with a spray hole 110, and the spray hole 110 is also located on the hemispherical surface 102;

[0073] The end surface of the plug body 200 is set as a hemispherical surface 202, which is adapted to the shape of the end surface of the closed end, and the pressure relief groove 400 is located on the hemispherical surface 202 of the plug body 200;

[0074] The first liquid channel B520 is also provided on the end hemispherical surface of the plug body 200 close to the closed end of the nozzle 100 . The first liquid channel B520 is used to connect the first liquid channel A and the pressure relief groove 400 .

[0075] When in use, liquid is supplied from the open end of the nozzle 100, and the liquid passes through two narrow and long first liquid channels A and two first liquid channels B520 in sequence, which pressurizes the liquid, and then flows into the pressure relief groove 400, and then is sprayed out in the form of mist through the spray hole 110. This realizes the function that after the nozzle 100 is extended into the narrow and long space and is oriented through depth rotation, the spray hole 110 on the side of the nozzle 100 can perform targeted mist spraying on a specific position on the inner wall of the narrow and long space.

[0076] Embodiment 3

[0077] like Figures 9 to 12 As shown, the present embodiment provides a mist spraying device, comprising a nozzle 100 and a plug body 200;

[0078] One end of the nozzle 100 (the upper end in the figure) is set as a closed end, and the end surface of the closed end is set as a plane 101, and the other end (the lower end in the figure) is set as an open end. The nozzle 100 is provided with a spray hole 110, and the spray hole 110 is arranged close to the side of the closed end;

[0079] The plug body 200 is set to be cylindrical and inserted into the inner cavity of the nozzle 100. The plug body 200 is in close contact with the inner wall of the nozzle 100. The end face of the plug body 200 is set to be a plane 201, which is adapted to the end face shape of the closed end.

[0080] A limiting structure 300 is provided between the nozzle 100 and the plug body 200. The limiting structure 300 is used to prevent the plug body 200 and the nozzle 100 from rotating relative to each other.

[0081] In addition, a pressure relief groove 400 and at least one guide channel 500 are provided between the outer wall of the plug body 200 and the inner wall of the nozzle 100; at least one guide channel 500 is used to transport liquid into the pressure relief groove 400, and the pressure relief groove 400 is connected to the spray hole 110, so that the liquid can be sprayed out from the spray hole 110 in an atomized state.

[0082] Specifically, two guide channels 500 are provided, and the two guide channels 500 can be arranged in parallel. The guide channel 500 includes a first liquid channel C and a first liquid channel D540 that are connected;

[0083] A narrow and long first plane C530 or a first groove C is provided along the axial direction of one side of the plug body 200. Taking the first plane C530 as an example, a first liquid channel C is formed between the first plane C530 and the arc-shaped inner wall of the nozzle 100.

[0084] The pressure relief groove 400 is disposed on the other side of the plug body 200 , and the pressure relief groove 400 is close to the end of the plug body 200 ;

[0085] The first liquid channel D540 is a hole that penetrates the plug body 200 in a radial direction, and the first liquid channel D540 is connected to the pressure relief groove 400 and the first liquid channel C respectively.

[0086] When in use, liquid is supplied from the open end of the nozzle 100, and the liquid passes through two narrow and long first liquid channels C and two first liquid channels D540 in sequence, which pressurizes the liquid, and then flows into the pressure relief groove 400, and then is sprayed out in the form of mist through the spray hole 110. This realizes the function that after the nozzle 100 is extended into the narrow and long space and is oriented through depth rotation, the spray hole 110 on the side of the nozzle 100 can perform targeted mist spraying on a specific position on the inner wall of the narrow and long space.

[0087] Embodiment 4

[0088] like Figures 13 to 15 As shown, the present embodiment provides a mist spraying device, comprising a nozzle 100 and a plug body 200;

[0089] One end of the nozzle 100 (the upper end in the figure) is set as a closed end, and the end surface of the closed end is set as an inclined surface 103, and the other end (the lower end in the figure) is set as an open end. The nozzle 100 is provided with a spray hole 110, and the spray hole 110 is provided on the inclined surface 103 of the closed end;

[0090] The plug body 200 is configured to be cylindrical and inserted into the inner cavity of the nozzle 100. The end surface of the plug body 200 is configured to be an inclined surface 203, which is adapted to the shape of the end surface of the closed end.

[0091] In this solution, since the closed end of the nozzle 100 is an inclined surface 103, the end of the plug body 200 for contacting the closed end is an inclined surface 203, so that the closed end of the nozzle 100 and the end of the plug body 200 form a limiting structure 300;

[0092] A pressure relief groove 400 and at least one guide channel 500 are provided between the outer wall of the plug body 200 and the inner wall of the nozzle 100; at least one guide channel 500 is used to transport liquid into the pressure relief groove 400, and the pressure relief groove 400 is connected to the spray hole 110, so that the liquid can be sprayed out from the spray hole 110 in an atomized state.

[0093] Specifically,

[0094] The pressure relief groove 400 and the guide channel 500 are respectively arranged on the end inclined surface of the plug body 200; wherein, three guide channels 500 are arranged and are in the shape of grooves, and the three guide channels 500 are evenly distributed around the pressure relief groove 400. In addition, the diameter of the plug body 200 is smaller than the inner cavity diameter of the nozzle 100, so that there is a flow space 120 for liquid to pass between the plug body 200 and the inner wall of the nozzle 100;

[0095] When in use, liquid is supplied from the open end of the nozzle 100, and the liquid passes through the flow space 120 and the three guide channels 500 in sequence, which pressurizes the liquid, and then flows into the pressure relief groove 400, and then is sprayed out in the form of mist through the spray hole 110, thereby realizing the function of using the spray hole 110 to perform targeted mist spraying on a specific position on the inner wall of the narrow space.

[0096] Embodiment 5

[0097] like Figures 16 to 19 As shown, the present embodiment provides a mist spraying device, comprising a nozzle 100 and a plug body 200;

[0098] One end of the nozzle 100 (the upper end in the figure) is set as a closed end, and the end surface of the closed end is set as a hemispherical surface 102. The other end (the lower end in the figure) is set as an open end. The nozzle 100 is provided with a spray hole 110, and the spray hole 110 is provided on the hemispherical surface 102.

[0099] The plug body 200 is configured to be cylindrical and inserted into the inner cavity of the nozzle 100. The plug body 200 is in close contact with the inner wall of the nozzle 100. The end surface of the plug body 200 is configured to be a hemispherical surface 202, which is adapted to the end surface shape of the closed end.

[0100] A limiting structure 300 is provided between the nozzle 100 and the plug body 200. The limiting structure 300 is used to prevent the plug body 200 and the nozzle 100 from rotating relative to each other.

[0101] In addition, a pressure relief groove 400 and at least one guide channel 500 are provided between the outer wall of the plug body 200 and the inner wall of the nozzle 100; at least one guide channel 500 is used to transport liquid into the pressure relief groove 400, and the pressure relief groove 400 is connected to the spray hole 110, so that the liquid can be sprayed out from the spray hole 110 in an atomized state.

[0102] Specifically, two guide channels 500 are provided, and the guide channels 500 include a first liquid channel E and a first liquid channel F560 which are connected;

[0103] The inner wall of the nozzle 100 is provided with a first narrow groove E550 along its axial direction, and a first liquid channel E is formed between the first groove E550 and the arc-shaped outer wall of the plug body 200;

[0104] The pressure relief groove 400 and the first liquid channel F560 are respectively arranged in the arc surface of the closed end of the nozzle 100, and the first liquid channel F560 is in the shape of a groove;

[0105] The two first liquid channels E are respectively connected to the pressure relief groove 400 through the corresponding first liquid channels F560.

[0106] When in use, liquid is supplied from the open end of the nozzle 100, and the liquid passes through the first liquid channel F560 and the first liquid channel F560 in turn, which pressurizes the liquid, and then flows into the pressure relief groove 400, and then is sprayed out in the form of mist through the spray hole 110, thereby realizing the function of using the spray hole 110 to perform targeted mist spraying on a specific position on the inner wall of the narrow space.

[0107] As a preferred embodiment, in the above-mentioned embodiments 1 to 3, and embodiment 5, the limiting structure 300 includes a protrusion 310 and a groove 320 that match each other;

[0108] For example, when the protrusion 310 is located on the outer wall of the plug body 200 , the groove 320 is located on the inner wall of the nozzle 100 ; or, when the protrusion 310 is located on the inner wall of the nozzle 100 , the groove 320 is located on the outer wall of the plug body 200 .

[0109] In addition, it should be noted that:

[0110] In the existing technology, especially for some pipes with a diameter less than 1 cm, in order to ensure that they are in good working condition, it is necessary to regularly inspect the pipes from the inside and promptly carry out targeted spray repairs on the accident points on the pipe wall; the existing technology is difficult to achieve targeted fixed-point spray repairs on the side walls of pipes with a diameter less than 1 cm and a large depth. The reason is: the current spray technology uses spraying at the top of the spray head. In large-diameter pipes, additional elbows or bends can be installed to achieve the twists and turns of the spray head, and then targeted spray repairs are carried out through rotation and depth adjustment;

[0111] However, in pipes with a diameter of less than 1 cm, the accommodation space is limited and it is impossible to install elbows or curved pipes to achieve the twists and turns of the spray head. Therefore, when an accident point occurs in a pipe with a diameter of less than 1 cm, it can only be solved by removal and replacement after being detected. Therefore, a device is needed that can effectively perform targeted spray repair after an accident point occurs on the inner wall of a pipe with a diameter of less than 1 cm.

[0112] The mist spray device provided in Examples 1 to 5 of the present application can process the diameter of the nozzle 100 to be less than 1 cm, and realizes the function of, after the nozzle 100 is extended into a long and narrow space and oriented by rotating in depth, using the spray hole 110 to perform targeted mist spraying on a specific position on the inner wall of the long and narrow space. In particular, it is required to perform deep targeted mist spraying in a long and narrow space with a diameter of less than 1 cm. The realization of this function solves many problems that have long plagued many engineering fields.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A mist spraying device, characterized in that: include: A nozzle, one end of which is set as a closed end and the other end is set as an open end, the nozzle is provided with a spray hole, and the spray hole is arranged in the closed end area of ​​the nozzle or the side wall of the nozzle; the axis of the spray hole is not colinear with the axis of the nozzle; The plug body is cylindrical and inserted into the inner cavity of the nozzle. A limiting structure is provided between the nozzle and the plug body to prevent the plug body and the nozzle from rotating relative to each other. Furthermore, a pressure relief groove and at least one flow guide channel are provided between the outer wall of the plug body and the inner wall of the nozzle; At least one of the guide channels is used to transport liquid into the pressure relief groove, and the pressure relief groove is connected to the spray hole, so that the liquid can be sprayed out from the spray hole in an atomized state.

2. The mist spraying device according to claim 1, characterized in that: Two guide channels are provided, and the guide channels include a first liquid channel A and a first liquid channel B which are connected to each other; The plug body is in close contact with the inner wall of the nozzle, and a narrow and long first plane A or a first groove A is provided on one side of the plug body along its axial direction, and a first liquid channel A is formed between the first plane A or the first groove A and the arc-shaped inner wall of the nozzle; The pressure relief groove is arranged on the other side of the plug body; A first liquid channel B is provided at the end of the plug body close to the closed end of the nozzle. The first liquid channel B is in a groove shape and is used to connect the first liquid channel A and the pressure relief groove.

3. The mist spraying device according to claim 1, characterized in that: Two guide channels are provided, and the guide channels include a first liquid channel C and a first liquid channel D which are connected to each other; The plug body is in close contact with the inner wall of the nozzle, and a narrow and long first plane C or a first groove C is provided along the axial direction of one side of the plug body, and a first liquid channel C is formed between the first plane C or the first groove C and the arc-shaped inner wall of the nozzle; The pressure relief groove is arranged on the other side of the plug body; The first liquid channel D is a hole that penetrates the plug body in a radial direction, and the first liquid channel D is connected to the pressure relief groove and the first liquid channel C respectively.

4. The mist spraying device according to claim 2 or 3, characterized in that: The closed end of the nozzle is planar, and the end of the plug body for contacting the closed end is planar.

5. The mist spraying device according to claim 2, characterized in that: The closed end of the nozzle is hemispherical, the end of the plug body for contacting the closed end is hemispherical, and the pressure relief groove and the first liquid channel B are located on the hemispherical surface of the end of the plug body.

6. The mist spraying device according to any one of claims 1 to 3, characterized in that: The limiting structure includes matching protrusions and grooves; When the protrusion is located on the outer wall of the plug body, the groove is located on the inner wall of the nozzle; When the protrusion is located on the inner wall of the nozzle, the groove is located on the outer wall of the plug body.

7. The mist spraying device according to claim 1, characterized in that: The closed end of the nozzle is in the shape of an inclined surface, and the end of the plug body for contacting the closed end is in the shape of an inclined surface, so that the closed end of the nozzle and the end of the plug body cooperate to contact to form the limiting structure, and a flow space for liquid to pass through is provided between the plug body and the inner wall of the nozzle; The pressure relief groove and the flow guide channel are respectively arranged on the end inclined surface of the plug body; The guide channels are provided in plurality and are in the shape of grooves, and the plurality of guide channels are distributed around the pressure relief groove.

8. The mist spraying device according to claim 1, characterized in that: Two guide channels are provided, and the guide channels include a first liquid channel E and a first liquid channel F which are connected to each other; The inner wall of the nozzle is provided with a first narrow groove E along its axial direction, and a first liquid channel E is formed between the first groove E and the arc-shaped outer wall of the plug body; The pressure relief groove and the first liquid channel F are respectively arranged at the closed end of the nozzle, and the first liquid channel F is in the shape of a groove; The first liquid channel E is communicated with the pressure relief groove through the first liquid channel F.

9. The mist spraying device according to claim 8, characterized in that: The closed end of the nozzle is hemispherical, and the end of the plug body for contacting the closed end is hemispherical.

10. The mist spraying device according to claim 8, characterized in that: The limiting structure includes matching protrusions and grooves; The protrusion is located on the outer wall of the plug body, and the groove is located on the inner wall of the nozzle; or, The protrusion is located on the inner wall of the nozzle, and the groove is located on the outer wall of the plug body.

Images