Foam generator

Abstract

The utility model provides a foam generator, which relates to the technical field of foam generating devices and comprises a first foam generating component and a second foam generating component. The first foam generating assembly comprises a first outer pipe and a first inner pipe; the first inner pipe is sleeved with the first outer pipe, and an annular cavity is formed between the first outer pipe and the first inner pipe; a plurality of through holes are formed in the first inner pipe; the second foam generating assembly comprises a second outer pipe and a spiral pipe; the second outer pipe sleeves the outer side of the spiral pipe; one end of the first outer pipe is communicated with one end of the second outer pipe. In the foaming process, bubble liquid and gas flow into the first foam generating assembly, primary foam is formed in the first inner pipe, the generated foam enters an inner cavity of the second outer pipe, and under the action of the spiral pipe, the foam can move and be mixed along the spiral pipe, so that secondary foaming and mixing are achieved, the foaming efficiency is improved, the foam generating time is shortened, and the foaming efficiency is improved. And the volume of foam generated in unit time is increased.

Description

Technical Field

[0001] This utility model relates to the field of foam generating device technology, and in particular to a foam generator. Background Technology

[0002] A foam generator is a device that produces foam from a liquid. Foam generators are widely used in various fields.

[0003] Existing foam generators have an outer tube and an inner tube. The inner tube has multiple through holes, and the outer tube is sleeved on the outside of the inner tube. The foam generation is a one-time event, the foam generation time is relatively long, and the volume of foam generated per unit time is small, resulting in low foaming efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a foam generator to solve the technical problem of low foaming efficiency in existing foam generators.

[0005] The foam generator provided by this utility model includes a first foam generating component and a second foam generating component;

[0006] The first foam generating component includes a first outer tube and a first inner tube; the first outer tube is sleeved on the outside of the first inner tube, and an annular cavity is formed between the first outer tube and the first inner tube; the first inner tube is provided with a plurality of through holes;

[0007] The second foam generating component includes a second outer tube and a spiral tube; the second outer tube is sleeved on the outside of the spiral tube; one end of the first outer tube is connected to one end of the second outer tube.

[0008] Furthermore, one end of the first outer tube is detachably connected to one end of the second outer tube.

[0009] Furthermore, one end of the first outer tube is provided with an external thread, and one end of the second outer tube is provided with an external thread. The one end of the first outer tube and the one end of the second outer tube are detachably connected by a butt joint.

[0010] Furthermore, the line connecting the center of the outer end section of the through hole and the center of the first inner tube is the first connecting line;

[0011] The axis of the through hole is inclined to the first connecting line.

[0012] Furthermore, the angle between the axis of the through hole and the first connecting line is 5°–10°.

[0013] Furthermore, the first outer tube is coaxially arranged with the first inner tube, the second outer tube is coaxially arranged with the spiral tube, and the first outer tube and the second outer tube are coaxially arranged.

[0014] Furthermore, the outer diameter of the first outer tube is 100mm-120mm; the width of the annular cavity along the radial direction of the first outer tube is 25mm; and the diameter of the through hole is 6mm-9mm.

[0015] Furthermore, the foam generator also includes a three-way structure;

[0016] The three-way structure includes a first inlet, a second inlet, and an outlet; the outlet is connected to the end of the first outer tube that is away from the second outer tube.

[0017] Furthermore, the first inlet is equipped with an inlet connector.

[0018] Furthermore, the end of the second outer tube away from the first outer tube is provided with an outlet connector.

[0019] The foam generator provided by this utility model includes a first foam generating component and a second foam generating component. The first foam generating component includes a first outer tube and a first inner tube. The first outer tube is sleeved outside the first inner tube, forming an annular cavity between the first outer tube and the first inner tube. The first inner tube has multiple through holes. The second foam generating component includes a second outer tube and a spiral tube. The second outer tube is sleeved outside the spiral tube. One end of the first outer tube is connected to one end of the second outer tube. During foaming, the bubble liquid and gas flow into the first foam generating component, forming primary foaming in the first inner tube. The generated foam enters the inner cavity of the second outer tube. Under the action of the spiral tube, the foam moves and mixes along the spiral tube, thereby achieving secondary foaming and mixing to improve foaming efficiency, shorten the foaming time, and increase the volume of foam generated per unit time. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the foam generator provided in this embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the first inner tube of the foam generator provided in this embodiment of the utility model;

[0023] Figure 3This is a schematic diagram of the spiral tube structure of the foam generator provided in this embodiment of the utility model;

[0024] Figure 4 This is a cross-sectional view of the first inner tube of the foam generator provided in this embodiment of the present invention.

[0025] Icons: 1 - Inlet connector; 2 - Tee structure; 3 - First outer tube; 31 - First inner tube; 311 - Through hole; 312 - First connecting line; 313 - Axis of the through hole; 4 - Second outer tube; 41 - Spiral tube; 5 - Outlet connector. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] This invention provides a foam generator, and several embodiments are given below to describe the foam generator provided by this invention in detail.

[0028] The foam generator provided in this embodiment, such as Figures 1 to 4 As shown, it includes a first foam generating component and a second foam generating component; the first foam generating component includes a first outer tube 3 and a first inner tube 31; the first outer tube 3 is sleeved on the outside of the first inner tube 31, and an annular cavity is formed between the first outer tube 3 and the first inner tube 31; the first inner tube 31 is provided with a plurality of through holes 311; the second foam generating component includes a second outer tube 4 and a spiral tube 41; the second outer tube 4 is sleeved on the outside of the spiral tube 41; one end of the first outer tube 3 is connected to one end of the second outer tube 4.

[0029] The inner cavity of the first outer tube 3 is hollow, the inner cavity of the first inner tube 31 is hollow, the first inner tube 31 is fixed inside the inner cavity of the first outer tube 3, and there is a gap between the first outer tube 3 and the first inner tube 31, which forms an annular gap. One or both ends of the first inner tube 31 are fixed inside the inner cavity of the first outer tube 3 by a connector.

[0030] In this embodiment, both the first outer tube 3 and the first inner tube 31 are cylindrical. The two ends of the first inner tube 31 are connected to the two ends of the first outer tube 3 one by one by thread, so that the first inner tube 31 is fixed in the inner cavity of the first outer tube 3.

[0031] The first inner tube 31 is provided with multiple through holes 311, which can be evenly distributed on the first inner tube 31.

[0032] In this embodiment, the first inner tube 31 is provided with multiple sets of through holes 311, and the multiple sets of through holes 311 are evenly spaced along the axial direction of the first inner tube 31; each set of through holes 311 includes multiple through holes 311 evenly spaced along the circumference of the first inner tube 31.

[0033] Along the axial direction of the first inner tube 31, the through holes 311 in two adjacent sets of through holes 311 can be aligned one-to-one or staggered one-to-one. For example, along the axial direction of the first inner tube 31, the through holes 311 in two adjacent sets of through holes 311 can be staggered one-to-one, with the odd-numbered sets of through holes 311 aligned one-to-one from one end of the first inner tube 31, and the even-numbered sets of through holes 311 aligned one-to-one. Alternatively, along the axial direction of the first inner tube 31, the through holes 311 in two adjacent sets of through holes 311 can be staggered one-to-one, with the through holes 311 in the nth set of through holes 311 and the through holes 311 in the (n+4)th set of through holes 311 aligned one-to-one from one end of the first inner tube 31, where n≥1.

[0034] The inner cavity of the second outer tube 4 is hollow, and the spiral tube 41 is fixed in the inner cavity of the second outer tube 4. A gap can be set between the spiral tube 41 and the second outer tube 4, and the spiral tube 41 can also contact the inner wall of the second outer tube 4. One or both ends of the spiral tube 41 are fixed in the inner cavity of the second outer tube 4 by a connector, which can be rod-shaped or bracket-shaped, etc.

[0035] The spiral tube 41 includes a support rod and blades. The blades are fixed to the support rod in a spiral shape around the axis of the support rod. The support rod is fixed in the inner cavity of the second outer tube 4 by a connector.

[0036] One end of the first outer tube 3 is connected to one end of the second outer tube 4, and the inner cavity of the first outer tube 3 is connected to the inner cavity of the second outer tube 4.

[0037] During foaming, the bubble liquid and gas flow into the first foam generating component, forming primary foaming in the first inner tube 31. The generated foam enters the inner cavity of the second outer tube 4. Under the action of the spiral tube 41, the foam moves and mixes along the spiral tube 41, thereby achieving secondary foaming and mixing to improve foaming efficiency, shorten the foaming time, and increase the volume of foam generated per unit time.

[0038] One end of the first outer tube 3 and one end of the second outer tube 4 can be fixedly connected, such as by welding or bonding, or they can be detachably connected, such as by threaded connection or snap-fit.

[0039] Furthermore, one end of the first outer tube 3 is detachably connected to one end of the second outer tube 4. This facilitates the assembly and disassembly of the first outer tube 3 and the second outer tube 4, making the manufacturing and maintenance of the foam generator easier.

[0040] Furthermore, one end of the first outer tube 3 is provided with an external thread, and one end of the second outer tube 4 is provided with an external thread. One end of the first outer tube 3 and one end of the second outer tube 4 are detachably connected by a butt joint.

[0041] Specifically, one end of the butt joint is threaded to the external thread of one end of the first outer tube 3, and the other end of the butt joint is threaded to the external thread of one end of the second outer tube 4, thereby connecting the first outer tube 3 and the second outer tube 4. Connecting the first outer tube 3 and the second outer tube 4 using the butt joint is convenient and reduces assembly difficulty.

[0042] Furthermore, the line connecting the center of the outer end section of the through hole 311 and the center of the first inner tube 31 is the first connecting line 312; the axis 313 of the through hole is inclined to the first connecting line 312.

[0043] Among them, the through hole 311 is a circular through hole 311, and the outer end cross-section of the through hole 311 is a circular cross-section of the end of the through hole 311 facing the first outer tube 3. For example Figure 4 As shown, within the circular cross-section of the first inner tube 31, the line connecting the center of the outer end cross-section of the through hole 311 and the center of the circular cross-section of the first inner tube 31 is the first connecting line 312, which is arranged radially along the first inner tube 31. That is, as... Figure 4 As shown, along the axial direction of the through hole 311, the radial circular cross section of the end of the through hole 311 facing the first outer tube 3 is the outer end cross section of the through hole 311; the line connecting the center of the outer end cross section of the through hole 311 and the center of the radial circular cross section of the first inner tube 31 passing through the axis of the through hole 311 is the first connecting line 312.

[0044] The first connecting line 312 is inclined to the axis 313 of the through hole, which is conducive to the foaming of the first foam generating component and can improve the foaming efficiency.

[0045] The axis 313 of any through hole is inclined to the first connecting line 312 corresponding to that through hole.

[0046] Furthermore, the angle between the axis 313 of the through hole and the first connecting line 312 is 5°–10°.

[0047] The angle between the axis 313 of the through hole and the first connecting line 312 can be any suitable angle such as 5°, 6°, 7°, 8°, 9° or 10°.

[0048] The included angles between the axis 313 of the multiple through holes and the first connecting line 312 corresponding to the through hole 311 can be the same or different.

[0049] Furthermore, the first outer tube 3 is coaxially arranged with the first inner tube 31, and the second outer tube 4 is coaxially arranged with the spiral tube 41. The coaxial arrangement of the first outer tube 3 and the second outer tube 4 makes the foam generator have a high degree of coaxiality, high manufacturing precision, and good foaming effect.

[0050] Furthermore, the outer diameter of the first outer tube 3 is 100mm-120mm; the width of the annular cavity along the radial direction of the first outer tube 3 is 25mm; and the diameter of the through hole 311 is 6mm-9mm.

[0051] The outer diameter of the first outer tube 3 can be any suitable value such as 100mm, 110mm or 120mm.

[0052] Along the radial direction of the first outer tube 3, the width of the annular cavity can be any suitable value such as 24mm, 25mm or 26mm.

[0053] The diameter of the through hole 311 can be any suitable value such as 6mm, 7mm, 8mm or 9mm.

[0054] Furthermore, the foam generator also includes a three-way structure 2; the three-way structure 2 includes a first inlet, a second inlet, and an outlet; the outlet is connected to the end of the first outer tube 3 that is away from the second outer tube 4.

[0055] The first inlet is for air intake, and the second inlet is for liquid bubble injection. Both gas and liquid bubble flow into the first outer pipe 3 through the outlet.

[0056] Furthermore, the first inlet is equipped with an inlet connector 1.

[0057] Inlet connector 1 is connected to a gas source, and the inner cavity of inlet connector 1 is connected to the inner cavity of the three-way structure 2. The outlet is connected to the inner cavity of the first outer pipe 3. During foaming, inlet connector 1 supplies gas, and the second inlet supplies liquid, forming a primary foam inside the first bubble generating component.

[0058] Furthermore, the end of the second outer tube 4 furthest from the first outer tube 3 is provided with an outlet connector 5. The foam flowing out of the second outer tube 4 flows into the next process through the outlet connector 5.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A foam generator, characterized in that, The foam generator comprises a first foam generating assembly and a second foam generating assembly. The first foam generating assembly comprises a first outer tube and a first inner tube; the first outer tube is sleeved outside the first inner tube, and an annular cavity is formed between the first outer tube and the first inner tube; a plurality of through holes are arranged on the first inner tube. The second foam generating assembly comprises a second outer tube and a spiral tube; the second outer tube is sleeved outside the spiral tube; one end of the first outer tube is in communication with one end of the second outer tube.

2. The foam generator of claim 1, wherein, One end of the first outer tube is detachably connected with one end of the second outer tube.

3. The foam generator of claim 2, wherein, One end of the first outer tube is provided with external threads, one end of the second outer tube is provided with external threads, and one end of the first outer tube is detachably connected with one end of the second outer tube through a butt joint.

4. The foam generator of claim 1, wherein, A connecting line between the center of the cross section of the outer end of the through hole and the center of the first inner tube is a first connecting line. The axis of the through hole is obliquely arranged with the first connecting line.

5. The foam generator of claim 4, wherein, The included angle between the axis of the through hole and the first connecting line is 5°-10°.

6. The foam generator of claim 1, wherein, The first outer tube is coaxially arranged with the first inner tube, the second outer tube is coaxially arranged with the spiral tube, and the first outer tube is coaxially arranged with the second outer tube.

7. The foam generator of claim 6, wherein, The outer diameter of the first outer tube is 100mm-120mm; along the radial direction of the first outer tube, the width of the annular cavity is 25mm; and the diameter of the through hole is 6mm-9mm.

8. The foam generator of claim 1, wherein, The foam generator further comprises a tee structure. The tee structure comprises a first inlet, a second inlet and an outlet; the outlet is in communication with one end of the first outer tube away from the second outer tube.

9. The foam generator of claim 8, wherein, The first inlet is provided with an inlet joint.

10. The foam generator of claim 1, wherein, One end of the second outer tube away from the first outer tube is provided with an outlet joint.

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