Foam spraying device

Abstract

The utility model provides a foam jetting device which comprises a conveying pipeline, a foam jetting device, a foam jetting device and a foam jetting device, the conveying pipeline is used for conveying foam, and communicating holes are formed in the side wall of the conveying pipeline; the spraying assembly comprises a mounting seat, a spraying part and a first locking part, the mounting seat sleeves the conveying pipeline, a communicating channel is formed in the mounting seat, the first end of the communicating channel communicates with the communicating hole, the spraying part is arranged at the communicating channel, the spraying part can rotate relative to the mounting seat, and the spraying part is provided with a feeding opening and a spraying opening which communicate with each other; the feeding port communicates with the second end of the communicating channel, the first locking part is arranged between the mounting base and the spraying part, and the mounting base and the spraying part are locked through the first locking part. By means of the scheme, the problem that in the prior art, a spraying assembly is welded to a conveying pipeline, and the spraying range of a foam spraying device is limited can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing devices, in particular to a foam spraying device. Background Art

[0002] Low-multiplicity foam is often used in coal mine goaf fire extinguishing, mining face dust prevention, hydrogen sulfide control, etc. In the prior art, the foam is usually sprayed by a foam spraying device.

[0003] At present, a common foam spraying device comprises a base, a delivery pipe and a spraying assembly, wherein the delivery pipe is arranged on the base, the spraying assembly is provided with a feed port and a spraying port which are connected to each other, the spraying assembly is fixedly arranged on the delivery pipe, and the feed port of the spraying assembly is connected to the delivery pipe.

[0004] In the prior art foam spraying device, the spraying assembly is usually welded to the delivery pipe. However, the spraying assembly is welded to the delivery pipe, and the foam spraying device can only spray in a predetermined direction, and the spraying range is limited. When there are multiple spraying areas, the spraying operation in different areas can only be achieved by changing the position of the base, which is less convenient to use. Utility Model Content

[0005] The utility model provides a foam spraying device to solve the problem in the prior art that the spraying component is welded to the conveying pipeline and the spraying range of the foam spraying device is limited.

[0006] The utility model provides a foam spraying device, which comprises: a conveying pipeline, the conveying pipeline is used for conveying foam, and a communicating hole is arranged on the side wall of the conveying pipeline; an spraying component, comprising a mounting seat, a spraying part and a first locking part, the mounting seat is sleeved on the conveying pipeline, a communicating channel is arranged on the mounting seat, a first end of the communicating channel is communicated with the communicating hole, the spraying part is arranged at the communicating channel, the spraying part can rotate relative to the mounting seat, the spraying part has a feed port and a spray port that are communicated with each other, the feed port is communicated with the second end of the communicating channel, the first locking part is arranged between the mounting seat and the spraying part, and the mounting seat and the spraying part are locked by the first locking part.

[0007] Furthermore, the injection portion includes a connecting section and an injection section that are interconnected, an angle is formed between the injection section and the connecting section, a feed port is arranged on an end surface of the connecting section away from the injection section, an injection port is arranged on an end surface of the injection section away from the connecting section, the connecting section is rotatably inserted into the second end of the connecting channel, and the first locking portion passes through the mounting seat and is connected to the connecting section.

[0008] Furthermore, the foam spraying device further comprises: a first sealing portion, which is arranged between the connecting section and the mounting seat, and the first sealing portion is used to seal the gap between the connecting section and the mounting seat.

[0009] Furthermore, the foam spraying device further comprises: a second locking portion, which is arranged between the mounting seat and the delivery pipe, and the mounting seat and the delivery pipe are locked by the second locking portion.

[0010] Furthermore, the mounting seat includes a first mounting ring and a second mounting ring, the first mounting ring is sleeved on the conveying pipe, the second mounting ring is arranged on the side wall of the first mounting ring, the second mounting ring is connected to the first mounting ring, one end of the connecting channel extends to the inner side wall of the first mounting ring, and the other end extends to the end face of the second mounting ring away from the first mounting ring, and the second locking portion is arranged between the first mounting ring and the conveying pipe.

[0011] Furthermore, the foam spraying device also includes: a second sealing part, which is annularly arranged between the mounting seat and the conveying pipe, and the second sealing part is provided with two groups, and the two groups of second sealing parts are respectively located on both sides of the connecting hole, and the second sealing part is used to seal the gap between the mounting seat and the conveying pipe.

[0012] Furthermore, a first mounting groove is formed between the delivery pipeline and the mounting seat, and the second sealing portion is arranged in the first mounting groove.

[0013] Furthermore, the foam spraying device also includes: a base, the delivery pipe can rotate relative to the base, and there is an angle between the rotation axis of the delivery pipe and the rotation axis of the spraying part; a third locking part, which is arranged between the base and the delivery pipe, and the base and the delivery pipe are locked by the third locking part.

[0014] Furthermore, both ends of the conveying pipe are blocked ends, the communicating hole is arranged on the side wall of the conveying pipe, the base includes two mounting plates arranged opposite to each other, the conveying pipe is rotatably arranged between the two mounting plates, two third locking parts are arranged, the third locking parts are arranged corresponding to the mounting plates, and the end of the conveying pipe and the corresponding mounting plate are connected through the third locking parts.

[0015] Furthermore, multiple groups of connecting holes and injection assemblies are respectively provided, and the multiple connecting holes are spaced apart along the length direction of the conveying pipeline, and an injection assembly is provided at each connecting hole.

[0016] By applying the technical solution of the utility model, the mounting seat of the spray assembly is installed on the conveying pipeline, and the foam in the conveying pipeline is sprayed to the area to be sprayed through the mounting seat and the spray part. When it is necessary to spray different areas, the spray part can be rotated without adjusting the position of the conveying pipeline, so that the spray port of the spray part corresponds to the area to be sprayed, and then the mounting seat and the spray part are locked by the first locking part. In the traditional technical solution, the spray assembly is usually welded on the conveying pipeline. With such a setting, the position of the spray port of the spray assembly relative to the conveying pipeline is not adjustable. When it is necessary to spray different areas, it is usually necessary to move the conveying pipeline, which is labor-intensive. Compared with the traditional technical solution, the setting of this solution has a simple structure, and can spray foam to a wider area without moving the conveying pipeline, and has strong flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A cross-sectional view of a foam spraying device provided by an embodiment of the utility model from one viewing angle is shown;

[0019] Figure 2 A schematic diagram of the structure of a delivery pipeline provided by an embodiment of the utility model is shown;

[0020] Figure 3 A structural schematic diagram showing one viewing angle of the foam spraying device provided by an embodiment of the utility model;

[0021] Figure 4 A cross-sectional view from another perspective of the foam spraying device provided by an embodiment of the utility model is shown.

[0022] The above drawings include the following reference numerals:

[0023] 10. Delivery pipeline; 101. Communication hole; 102. Liquid inlet;

[0024] 11. Pipe body; 12. End cover; 13. Stopper;

[0025] 20. Mounting seat; 201. Communication channel;

[0026] 21. First mounting ring; 22. Second mounting ring;

[0027] 30. injection unit;

[0028] 31. Connecting section; 32. Injection section;

[0029] 40. a first locking portion;

[0030] 50. a first sealing portion;

[0031] 60. second locking portion;

[0032] 70. second sealing portion; 701. first mounting groove;

[0033] 80. base; 81. mounting plate;

[0034] 90. A third locking portion;

[0035] 100. Axial limit cylinder. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0037] like Figure 1 and Figure 2 As shown, the embodiment of the utility model provides a foam spraying device, which includes a delivery pipe 10 and a spraying assembly. The delivery pipe 10 is used to deliver foam. A connecting hole 101 and a liquid inlet 102 are provided on the side wall of the delivery pipe 10. The liquid inlet 102 is used to deliver foam into the delivery pipe 10. The spraying assembly includes a mounting seat 20, a spraying part 30 and a first locking part 40. The mounting seat 20 is sleeved on the delivery pipe 10. A connecting channel 201 is provided on the mounting seat 20. The first end of the connecting channel 201 is connected to the connecting hole 101. The spraying part 30 is arranged at the connecting channel 201. The spraying part 30 can rotate relative to the mounting seat 20. The spraying part 30 has a feed port and a spray port that are connected to each other. The feed port is connected to the second end of the connecting channel 201. The first locking part 40 is arranged between the mounting seat 20 and the spraying part 30. The mounting seat 20 and the spraying part 30 are locked by the first locking part 40.

[0038] Applying the technical solution of the utility model, the mounting seat 20 of the spraying assembly is installed on the conveying pipe 10, and the foam in the conveying pipe 10 is sprayed to the area to be sprayed through the mounting seat 20 and the spraying part 30. When it is necessary to spray different areas, the spraying part 30 can be rotated without adjusting the position of the conveying pipe 10, so that the spraying port of the spraying part 30 corresponds to the area to be sprayed, and then the mounting seat 20 and the spraying part 30 are locked by the first locking part 40. In the traditional technical solution, the spraying assembly is usually welded on the conveying pipe. In this way, the position of the spraying port of the spraying assembly relative to the conveying pipe is not adjustable. When it is necessary to spray different areas, it is usually necessary to move the conveying pipe, which has a high labor intensity. Compared with the traditional technical solution, the setting of this solution is simple in structure, and can spray foam to a wider area without moving the conveying pipe 10, and has strong flexibility. In addition, in this solution, the connecting hole 101 is processed on the side wall of the conveying pipe 10, and the mounting seat 20 is sleeved on the conveying pipe 10, which is convenient for assembling the conveying pipe 10 and the mounting seat 20.

[0039] In the embodiment of the present scheme, the injection part 30 includes a connecting section 31 and an injection section 32 which are interconnected, an angle is formed between the injection section 32 and the connecting section 31, a feed port is arranged on an end face of the connecting section 31 away from the injection section 32, an injection port is arranged on an end face of the injection section 32 away from the connecting section 31, the connecting section 31 is rotatably arranged in the second end of the connecting channel 201, and the first locking part 40 passes through the mounting seat 20 and is connected to the connecting section 31. Such an arrangement can facilitate the locking of the first locking part 40 and the injection part 30.

[0040] Specifically, the connecting section 31 and the injection section 32 are tubular structures. In some embodiments of the present invention, the axial direction of the connecting section 31 and the axial direction of the injection section 32 are perpendicular to each other. This arrangement can facilitate the processing of the connecting section 31 and the injection section 32.

[0041] Furthermore, the foam spraying device further includes a first sealing portion 50, which is disposed between the connecting section 31 and the mounting seat 20, and is used to seal the gap between the connecting section 31 and the mounting seat 20. The provision of the first sealing portion 50 can improve the sealing performance of the spraying assembly and reduce the possibility of foam flowing out of the gap between the mounting seat 20 and the spraying portion 30.

[0042] Specifically, a second mounting groove is provided on the outer circumference of the connecting section 31, and the second mounting groove is annularly provided on the outer circumference of the connecting section. The first sealing portion 50 includes a first sealing ring, and the first sealing ring is provided in the second mounting groove. Such a configuration can improve the stability of the first sealing ring.

[0043] This solution does not limit the number of the first sealing parts 50 .

[0044] In some embodiments of the present solution, one first sealing portion 50 is provided.

[0045] In the embodiment of this solution, two first sealing parts 50 are provided. Along the axial direction of the connecting section 31, the two first sealing parts 50 are respectively located on both sides of the first locking part 40. Such an arrangement can further improve the sealing performance of the injection assembly.

[0046] This solution does not limit the connection method between the mounting base 20 and the delivery pipeline 10.

[0047] In some embodiments of the present solution, the mounting seat 20 and the delivery pipeline 10 are integrally formed.

[0048] like Figure 3 and Figure 4 As shown, in the embodiment of the present solution, the mounting seat 20 and the delivery pipe 10 are separately arranged, and the foam spraying device further comprises a second locking portion 60, which is arranged between the mounting seat 20 and the delivery pipe 10, and the mounting seat 20 and the delivery pipe 10 are locked by the second locking portion 60. Such arrangement can facilitate the assembly of the mounting seat 20 and the delivery pipe 10.

[0049] In some embodiments of the present scheme, the injection device also includes a circumferential limiting structure, which is arranged between the mounting seat 20 and the conveying pipe 10. The circumferential limiting structure is used to limit the relative position of the mounting seat 20 and the conveying pipe 10 in the circumferential direction, thereby improving the accuracy of alignment between the connecting channel 201 of the mounting seat 20 and the connecting hole 101 on the conveying pipe 10.

[0050] This solution does not limit the specific structure of the mounting seat 20. Specifically, the mounting seat 20 of this embodiment includes a first mounting ring 21 and a second mounting ring 22. The first mounting ring 21 is sleeved on the conveying pipe 10, and the second mounting ring 22 is arranged on the side wall of the first mounting ring 21. The second mounting ring 22 is connected to the first mounting ring 21. One end of the communication channel 201 extends to the inner side wall of the first mounting ring 21, and the other end extends to the end surface of the second mounting ring 22 away from the first mounting ring 21. The second locking portion 60 is arranged between the first mounting ring 21 and the conveying pipe 10. Such an arrangement can facilitate the connection section 31 to be inserted into the second mounting ring 22, and the above arrangement can greatly reduce the wall thickness of the first mounting ring 21, so as to facilitate the second locking portion 60 to lock the first mounting ring 21 and the conveying pipe 10.

[0051] Furthermore, the foam spraying device further includes a second sealing portion 70, which is annularly arranged between the mounting seat 20 and the delivery pipe 10. The second sealing portion 70 is provided with two groups, and the two groups of second sealing portions 70 are respectively located on both sides of the communication hole 101. The second sealing portion 70 is used to seal the gap between the mounting seat 20 and the delivery pipe 10. The provision of two groups of second sealing portions 70 can further ensure the sealing between the mounting seat 20 and the delivery pipe 10, and further reduce the possibility of foam overflowing from the gap between the mounting seat 20 and the delivery pipe 10.

[0052] like Figure 2 and Figure 4 As shown, specifically, a first mounting groove 701 is formed between the delivery pipe 10 and the mounting seat 20, and the second sealing portion 70 is arranged in the first mounting groove 701. The arrangement of the first mounting groove 701 can improve the stability of the second sealing portion 70, reduce or avoid the possibility of the second sealing portion 70 moving, and further improve the sealing effect of the second sealing portion 70.

[0053] This solution does not limit the specific location of the first installation groove 701 .

[0054] In some embodiments of the present solution, the first mounting groove 701 is annularly arranged on the inner side wall of the first mounting ring 21 along the circumference of the first mounting ring 21 .

[0055] In the embodiment of the present solution, the first installation groove 701 is annularly arranged on the outer peripheral surface of the delivery pipe 10 along the circumference of the delivery pipe 10. Such arrangement can facilitate the processing and forming of the first installation groove 701.

[0056] like Figure 3 and Figure 4 As shown, the foam spraying device further includes a base 80 and a third locking portion 90. The delivery pipe 10 can rotate relative to the base 80, and there is an angle between the rotation axis of the delivery pipe 10 and the rotation axis of the spraying portion 30; the third locking portion 90 is arranged between the base 80 and the delivery pipe 10, and the base 80 and the delivery pipe 10 are locked by the third locking portion 90. Such an arrangement can further improve the spray range of the spray assembly of the device and further improve the adaptability of the device.

[0057] Specifically, both ends of the delivery pipe 10 are blocked ends, the communication hole 101 is arranged on the side wall of the delivery pipe 10, the base 80 includes two mounting plates 81 arranged opposite to each other, the delivery pipe 10 is rotatably arranged between the two mounting plates 81, two third locking parts 90 are arranged, the third locking parts 90 are arranged corresponding to the mounting plates 81, and the ends of the delivery pipe 10 and the corresponding mounting plates 81 are connected through the third locking parts 90. Such an arrangement has a simple structure and is easy to operate.

[0058] Furthermore, there are multiple groups of connecting holes 101 and spraying assemblies, and the connecting holes 101 are spaced apart along the length direction of the delivery pipe 10, and a spraying assembly is arranged at each connecting hole 101. Such arrangement can increase the number of spraying assemblies and improve the spraying range of the spraying assemblies.

[0059] like Figures 2 to 4 As shown, in the embodiment of the present scheme, the delivery pipeline 10 includes a pipeline body 11 and an end cap 12, the pipeline body 11 has a blocking end and an open end arranged oppositely, the end cap 12 is arranged at the open end of the pipeline body 11, the outer diameter of the end cap 12 is larger than the outer diameter of the pipeline body 11, a first stop surface is formed between the end cap 12 and the pipeline body 11, a stop portion 13 is arranged at one end of the pipeline body 11 away from the end cap 12, the diameter of the stop portion 13 is larger than the diameter of the pipeline body 11, and a second stop surface is formed between the stop portion 13 and the pipeline body 11. The communicating hole 101 is arranged on the pipeline body 11.

[0060] The injection device also includes an axial limiting cylinder 100, and a plurality of axial limiting cylinders 100 are provided. The axial limiting cylinders 100 are sleeved on the pipeline body 11, an axial limiting cylinder 100 is provided between two adjacent mounting seats 20, an axial limiting cylinder 100 is provided between the mounting seat 20 close to the end cover 12 and the end cover 12, and an axial limiting cylinder 100 is provided between the mounting seat 20 close to the stopper 13 and the stopper 13. The end face of the axial limiting cylinder 100 is abutted and matched with the end face of the corresponding mounting seat 20 or the first stopper face or the second stopper face. In this way, the position of the mounting seat 20 relative to the conveying pipeline 10 in the axial direction of the conveying pipeline 10 can be realized, the installation accuracy of the mounting seat 20 can be improved, and the relative position accuracy of the mounting seat 20 and the connecting hole 101 can be ensured.

[0061] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0062] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0063] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0064] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0065] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0066] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A foam spraying device, characterized in that: The foam spraying device comprises: A delivery pipe (10), the delivery pipe (10) being used for delivering foam, and a communication hole (101) being provided on a side wall of the delivery pipe (10); The injection assembly comprises a mounting seat (20), an injection part (30) and a first locking part (40), wherein the mounting seat (20) is sleeved on the conveying pipe (10), a connecting channel (201) is provided on the mounting seat (20), a first end of the connecting channel (201) is connected to the connecting hole (101), the injection part (30) is arranged at the connecting channel (201), the injection part (30) can rotate relative to the mounting seat (20), the injection part (30) has a feed port and an injection port which are connected to each other, the feed port is connected to the second end of the connecting channel (201), the first locking part (40) is arranged between the mounting seat (20) and the injection part (30), and the mounting seat (20) and the injection part (30) are locked by the first locking part (40).

2. The foam spraying device according to claim 1, characterized in that: The injection portion (30) comprises a connecting section (31) and an injection section (32) which are interconnected, an angle being formed between the injection section (32) and the connecting section (31), the feed port being arranged on an end surface of the connecting section (31) away from the injection section (32), the injection port being arranged on an end surface of the injection section (32) away from the connecting section (31), the connecting section (31) being rotatably inserted into the second end of the connecting passage (201), and the first locking portion (40) passing through the mounting seat (20) and being connected to the connecting section (31).

3. The foam spraying device according to claim 2, characterized in that: The foam spraying device also includes: A first sealing portion (50) is arranged between the connecting section (31) and the mounting seat (20), and the first sealing portion (50) is used to seal the gap between the connecting section (31) and the mounting seat (20).

4. The foam spraying device according to claim 1, characterized in that: The foam spraying device also includes: The second locking portion (60) is arranged between the mounting seat (20) and the delivery pipe (10), and the mounting seat (20) and the delivery pipe (10) are locked by the second locking portion (60).

5. The foam spraying device according to claim 4, characterized in that: The mounting seat (20) comprises a first mounting ring (21) and a second mounting ring (22); the first mounting ring (21) is sleeved on the conveying pipe (10); the second mounting ring (22) is arranged on the side wall of the first mounting ring (21); the second mounting ring (22) is communicated with the first mounting ring (21); one end of the communication channel (201) extends to the inner side wall of the first mounting ring (21); the other end extends to the end surface of the second mounting ring (22) away from the first mounting ring (21); the second locking portion (60) is arranged between the first mounting ring (21) and the conveying pipe (10).

6. The foam spraying device according to claim 1, characterized in that: The foam spraying device also includes: A second sealing portion (70) is annularly arranged between the mounting seat (20) and the conveying pipeline (10), and two groups of the second sealing portions (70) are provided. The two groups of the second sealing portions (70) are respectively located on both sides of the connecting hole (101), and the second sealing portions (70) are used to seal the gap between the mounting seat (20) and the conveying pipeline (10).

7. The foam spraying device according to claim 6, characterized in that: A first mounting groove (701) is formed between the delivery pipe (10) and the mounting seat (20), and the second sealing portion (70) is arranged in the first mounting groove (701).

8. The foam spraying device according to claim 1, characterized in that: The foam spraying device also includes: A base (80), the delivery pipe (10) being rotatable relative to the base (80), and an angle being formed between the rotation axis of the delivery pipe (10) and the rotation axis of the injection portion (30); The third locking portion (90) is arranged between the base (80) and the conveying pipe (10), and the base (80) and the conveying pipe (10) are locked by the third locking portion (90).

9. The foam spraying device according to claim 8, characterized in that: Both ends of the delivery pipe (10) are blocked ends, the communicating hole (101) is arranged on the side wall of the delivery pipe (10), the base (80) comprises two mounting plates (81) arranged opposite to each other, the delivery pipe (10) is rotatably arranged between the two mounting plates (81), two third locking parts (90) are provided, the third locking parts (90) are arranged corresponding to the mounting plates (81), and the ends of the delivery pipe (10) and the corresponding mounting plates (81) are connected via the third locking parts (90).

10. The foam spraying device according to claim 1, characterized in that: The communicating holes (101) and the injection assemblies are respectively provided in a plurality of groups, the plurality of communicating holes (101) are spaced apart and distributed along the length direction of the conveying pipe (10), and one injection assembly is provided at each communicating hole (101).

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