Multifunctional foam generator

Abstract

The multifunctional foam generator made of metal of the present invention comprises a liquid preparation part and a gas mixing part; the liquid preparation part comprises a water inlet end, a medicine inlet section and a foam generating section from left to right in sequence; the center of the liquid preparation part is a water medicine mixing hole, which comprises a water inlet threaded hole, a conical shrinkage hole, a water medicine mixing straight hole and a mixing hole; the gas mixing part comprises an air inlet end, a mixing section and a water outlet end in sequence from left to right; the center of the gas mixing part is composed of three cylindrical holes, which are a liquid-gas mixing hole, a transition hole and a water outlet threaded hole in sequence from left to right; the foam generating section of the liquid preparation part is inserted into the liquid-gas mixing hole of the gas mixing part, and the right end face of the medicine inlet section of the liquid preparation part is closely fitted with the left end face of the air inlet end of the gas mixing part and welded as one. The multifunctional foam generator can use a variety of liquid medicines at the same time, has good sealing performance, and the air, liquid medicine and water are fully mixed and the foam is uniform and rich.

Description

Technical Field

[0001] The invention relates to a foam mixed liquid generating device, in particular to a multifunctional foam generator of high pressure cleaning equipment used in workplaces of food, medicine and other industries. Background Art

[0002] High-pressure cleaning equipment is widely used to clean courtyards, buildings, vehicles, workplaces, etc. In order to achieve better cleaning effects, it is generally necessary to apply foam to the cleaning object. In workplaces such as food and medicine, disinfectant foam is also applied to the cleaning object for disinfection. A foam generator is a device used to generate foam. It uses the principle of the Venturi effect to suck cleaning liquid or disinfectant (hereinafter referred to as liquid medicine) and air into the pipeline and fully mix it with water in the pipeline. The richness of the foam depends on the mixing ratio of air, liquid medicine and water, and whether they are fully mixed.

[0003] Chinese patent document CN207071370U (application number 201720467616.9) discloses a foam generator for a high-pressure cleaning machine, including a cleaning bottle, a liquid suction tube, a four-way body, a venturi tube, a connecting pipe, and a vibrating body. The four-way body is a base of the foam generator, and has an inner hole with multiple steps, which is used to install the vibrating body, the venturi tube, and the connecting pipe. The cleaning bottle and the liquid suction tube are installed on one side of the four-way body where a liquid suction through hole is radially provided. The connecting pipe is used to connect the foam generator with a gun handle to introduce water flow into the foam generator. The vibrating body generates foam. The venturi tube has both a liquid suction hole and an air suction hole. The air, cleaning liquid, and water sucked by the venturi tube rush toward the vibrating body at a high speed. Under the action of the vibrating body, the cleaning liquid, air, and water are fully mixed to generate rich foam.

[0004] Chinese patent document CN204544526U (application number 201520129090.4) discloses a foam generator for a high-pressure cleaning machine, including a liquid storage bottle, wherein the liquid storage bottle contains foam liquid, a nozzle seat is installed on the bottle mouth of the liquid storage bottle, one end of the nozzle seat is formed with a water inlet joint, the water inlet joint is formed with a water inlet hole, the other end of the nozzle seat is connected to the nozzle, a suction pipe joint is formed in the nozzle seat, a suction pipe joint is installed on the suction pipe joint, and the suction pipe extends into the foam liquid, a pressurized mixing chamber is formed in the nozzle seat, a pressurized contraction hole is formed in the water inlet hole, the pressurized contraction hole, the pressurized mixing chamber and the suction pipe are connected, and a flow control nozzle is installed at the bottom of the suction pipe.

[0005] However, the existing foam generators still have some defects. First, the liquid medicine is single and only one liquid medicine, such as cleaning liquid, can be used at a time; second, the main body of the foam generator is a plastic part and is sealed with glue, which has poor sealing performance, making the pressure of each flow channel in the foam generator unstable and the foam uneven and rich; third, the flow channel design is unreasonable, so that the liquid medicine, air and water cannot be fully mixed, resulting in less foam and poor cleaning effect. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a multifunctional foam generator which can use multiple liquid medicines at the same time, has good sealing performance, fully mixes air, liquid medicines and water, and produces uniform and rich foam.

[0007] The technical solution for achieving the purpose of the present invention is: a multifunctional foam generator made of metal, comprising a liquid preparation part and a gas mixing part.

[0008] The liquid preparation part includes a water inlet end, a drug inlet section and a foam generating section from left to right; the center of the liquid preparation part is a water-drug mixing hole, which includes a water inlet threaded hole, a conical shrinkage hole, a water-drug mixing straight hole and a mixing hole; the water inlet end, the drug inlet section and the foam generating section are an integrated part.

[0009] The gas mixing part includes an air inlet end, a mixing section and a water outlet end from left to right; the air inlet end, the mixing section and the water outlet end are an integrated part; the center of the gas mixing part is composed of three cylindrical holes, which are a liquid-gas mixing hole, a transition hole and a water outlet threaded hole from left to right.

[0010] The foam generating section of the liquid dispensing part is inserted into the liquid-gas mixing hole of the gas mixing part, and the right end surface of the medicine feeding section of the liquid dispensing part is closely fitted with the left end surface of the gas inlet end of the gas mixing part and welded as a whole.

[0011] Furthermore, the water inlet end is a cylindrical tubular member;

[0012] The medicine inlet section is a cylinder coaxial with the water inlet end and having a regular polygonal shape. The left side of the medicine inlet section is smoothly connected with the outer cylindrical surface of the water inlet end.

[0013] The foam generating section is a cylindrical tubular member coaxial with the water inlet end and the medicine inlet section.

[0014] The outer side surface of the foam generating section is a stepped cylinder with a changing outer diameter from left to right; the stepped cylinder includes a first cylinder, a second cylinder, and a third cylinder;

[0015] The left side of the stepped cylinder is a first cylinder, and the left end of the first cylinder is smoothly connected to the medicine feeding section.

[0016] The right side of the first cylinder is the second cylinder, and the diameter D3 of the second cylinder is slightly smaller than the diameter D2 of the first cylinder.

[0017] To the right of the second cylinder is the third cylinder.

[0018] Furthermore, the axis line of the water inlet end is a water inlet threaded hole.

[0019] The axis of the medicine inlet section is a conical shrinkage hole which gradually shrinks from left to right, and the left side of the conical shrinkage hole is connected with the water inlet threaded hole of the water inlet end.

[0020] A drug feeding hole is formed at the center of one face of the regular polygon of the drug feeding section, which is perpendicular to the axis of the drug feeding section. That is, the axis of the drug feeding hole intersects perpendicularly with the axis of the drug feeding section, and the drug feeding hole intersects and penetrates the small end of the conical shrinkage hole.

[0021] A medicine feeding threaded hole coaxial with the medicine feeding hole is formed on the surface of the regular polygon on the outer side of the medicine feeding section, and the medicine feeding hole is connected with the medicine feeding threaded hole.

[0022] After the conical shrinkage hole intersects with the medicine feeding hole, it extends to the right with a water-medicine mixing straight hole, and the diameter d4 of the water-medicine mixing straight hole is slightly larger than the diameter d2 of the small end of the conical shrinkage hole until it is connected with the mixing hole of the foam generating section.

[0023] The axis of the foam generating section is a mixing hole which is interpenetrating from left to right. The mixing hole is composed of a foam front cone hole, a foam front straight hole and a foam rear straight hole which are interpenetrating from left to right.

[0024] The left end of the mixing hole is a foam front cone hole which is connected with the water-medicine mixing straight hole of the medicine feeding section and gradually enlarges from left to right; the right side of the foam front cone hole is a foam front straight hole with the large end diameter of the foam front cone hole as its diameter, and the small end diameter of the foam front cone hole is consistent with the diameter d4 of the water-medicine mixing straight hole; the right side of the foam front straight hole is connected with the foam rear straight hole, and the diameter d6 of the foam rear straight hole is slightly larger than the diameter d5 of the foam front straight hole, and the foam rear straight hole extends to the right until it passes through the foam generating section.

[0025] The second cylinder has two air inlet holes near the right side thereof, which intersect the axis of the foam generating section perpendicularly and penetrate the foam generating section in the radial direction. The two air inlet holes are axially perpendicular to each other.

[0026] Furthermore, opposite to the regular polygon of the drug feeding section, there is a drug feeding hole and a drug feeding threaded hole, and symmetrically there is another drug feeding hole and a drug feeding threaded hole that perpendicularly intersect the axis of the drug feeding section. The two drug feeding holes intersect and penetrate the small end of the conical shrinkage hole.

[0027] Furthermore, the air inlet hole is a transverse long waist hole.

[0028] The shape of the air inlet end of the mixing part is a regular polygonal cylinder; the shape of the mixing section is a cylinder.

[0029] The right side of the air inlet end is smoothly connected to the outer cylindrical surface of the mixing section.

[0030] Furthermore, the axis of the gas mixing part is composed of three cylindrical holes, the left side is a liquid-gas mixing hole, the middle is a transition hole, and the right side is a water outlet threaded hole; the diameter d7 of the liquid-gas mixing hole is slightly larger than the diameter D2 of the first cylinder; the diameter d8 of the transition hole is slightly smaller than the diameter d7 of the liquid-gas mixing hole; the length a9 of the liquid-gas mixing hole is slightly shorter than the length A6 of the foam generating section.

[0031] A compressed air inlet hole is formed at the center of one surface of the air inlet end and intersects perpendicularly with the axis of the mixing part; the compressed air inlet hole intersects and penetrates the liquid-gas mixing hole; an air inlet threaded hole coaxial with the compressed air inlet hole is formed on the surface of the outer regular polygon of the air inlet end, and the compressed air inlet hole is connected to the air inlet threaded hole.

[0032] Furthermore, the total length A10 of the foam generator is 155 mm to 165 mm, preferably 161 mm.

[0033] The outer diameter D1 of the water inlet end is 24 mm to 30 mm, preferably 26 mm; the length A2 from the left end surface of the water inlet end to the axial center line of the medicine inlet hole is 30 mm to 38 mm, preferably 34 mm;

[0034] The thickness A1 of the opposite side of the regular polygonal cylinder of the drug feeding section is 45 mm to 53 mm, preferably 47 mm; the length A3 of the drug feeding section is 18 mm to 22 mm, preferably 20 mm.

[0035] The large end diameter d1 of the conical shrinkage hole is 3mm to 5mm, preferably 4mm; the small end diameter d2 of the conical shrinkage hole is 2mm to 3mm, preferably 2.5mm; the length a2 of the conical shrinkage hole is 13mm to 17mm, preferably 15mm.

[0036] The diameter d3 of the drug inlet hole is 1.5 mm to 2.5 mm, preferably 2 mm.

[0037] The diameter d4 of the water-medicine mixing straight hole is 0.3 mm to 0.7 mm larger than the diameter d2 of the small end of the conical shrinkage hole, and preferably 0.55 mm larger.

[0038] The large end diameter d5 of the front cone hole of the foam is 3.5 mm to 4.5 mm, preferably 4 mm.

[0039] The length a4 of the water-medicine mixing straight hole is 11 mm to 13 mm, preferably 12 mm; the length a5 of the foam front cone hole is 8 mm to 9 mm, preferably 8.5 mm.

[0040] The length a6 of the front straight hole of the foam is 16 mm to 20 mm, preferably 18 mm.

[0041] The diameter d6 of the straight holes after the foam is 0.3 mm to 0.7 mm larger than the diameter d5 of the straight holes before the foam, and preferably 0.5 mm larger.

[0042] The diameter D2 of the first cylinder is 14 mm to 16 mm, preferably 15 mm; the length A4 of the first cylinder is 1.5 mm to 2.5 mm, preferably 2 mm.

[0043] The diameter D3 of the second cylinder is 1.5 mm to 2.5 mm smaller than the diameter D2 of the first cylinder, preferably 1.9 mm smaller; the length A5 of the second cylinder is 29 mm to 31 mm, preferably 30 mm;

[0044] The length A6 of the foam generating section is 35 mm to 48 mm, preferably 46.5 mm.

[0045] The diameter of the third cylinder is consistent with the diameter D2 of the first cylinder.

[0046] The length a7 of the transverse long waist hole is 4mm to 6mm, preferably 5mm; the width a8 is 3.5mm to 4.5mm, preferably 4mm.

[0047] The total length A9 of the gas mixing portion is 105 mm to 120 mm, preferably 117 mm.

[0048] The opposite thickness of the regular polygonal cylinder at the air inlet end is A7, which is consistent with the opposite thickness A1 of the regular polygonal cylinder of the drug inlet section; the length of the air inlet end is A8, which is consistent with the length A3 of the drug inlet section; the outer diameter of the mixing section is D4, which is consistent with the outer circle diameter D1 of the water inlet end; the shape of the water outlet end is a cylinder consistent with the shape of the mixing section.

[0049] The diameter d7 of the liquid-gas mixing hole is 0.4 to 0.6 mm larger than the diameter D2 of the first cylinder, preferably 0.5 mm larger; the diameter d8 of the transition hole is 0.8 to 1.2 mm smaller than the diameter d7 of the liquid-gas mixing hole, preferably 1 mm smaller.

[0050] The length a9 of the liquid-gas mixing hole is 0.1 to 0.2 mm shorter than the length A6 of the foam generating section, and preferably 0.1 mm shorter.

[0051] The diameter d9 of the compressed air inlet hole is 4 mm to 6 mm, preferably 5 mm.

[0052] Furthermore, the liquid preparation part and the gas mixing part are made of any one of 304 stainless steel, 316 stainless steel or titanium alloy.

[0053] When in use, the water inlet pipe is connected to the water inlet threaded hole of the liquid preparation part, one or two medicine inlet pipes are respectively connected to the corresponding medicine inlet threaded holes of the liquid preparation part, the compressed air pipe is connected to the air inlet threaded hole of the gas mixing part, and the water spray pipe is connected to the water outlet threaded hole of the gas mixing part. Since the water enters the foam generator at a relatively large flow rate, the water inlet flow rate increases through the contraction of the aperture of the conical shrinkage hole, generating negative pressure, and the liquid medicine is sucked into the foam generator from the medicine inlet hole by using the Venturi effect; it is fully mixed into a water-medicine mixed liquid in the water-medicine mixing straight hole, the foam front cone hole and the foam front straight hole; the compressed air enters the foam generator through the air inlet threaded hole and the compressed air inlet hole, and enters the foam rear straight hole through the decompression cavity 2-10 between the second cylinder and the liquid-gas mixing hole of the gas mixing part and the air inlet hole, and is fully mixed with the water-medicine mixed liquid to form foam, which is sprayed out from the water spray pipe.

[0054] The present invention has positive effects:

[0055] 1) The liquid dispensing part and the gas mixing part of the multifunctional foam generator of the present invention are made of metal material. The liquid dispensing part and the gas mixing part are welded together after being assembled to avoid leakage.

[0056] 2) There are two medicine inlet holes on the medicine inlet section, one of which is used to connect the foam concentrate, and the other is used to connect the disinfectant or other liquid medicine. Cleaning and disinfection can be carried out at the same time, realizing multifunctional work.

[0057] 3) The difference in diameter between the second cylinder and the first and third cylinders, after the foam generating section is inserted into the liquid-gas mixing hole, a space is formed between the second cylinder of the foam generating section and the liquid-gas mixing hole of the gas mixing part, that is, the decompression cavity of the compressed air entering the foam generator, so that the compressed air is decompressed in this decompression cavity, and when the decompressed compressed air enters the rear straight hole of the foam through the air inlet hole, its pressure matches the pressure of the water-medicine mixture in the front straight hole of the foam, and the water-medicine mixture will not be blocked due to excessive air pressure, nor will it be unable to be fully mixed with the water-medicine mixture due to too low air pressure, thereby producing uniform and rich foam.

[0058] 4) The air inlet hole is a transverse long waist hole, which is conducive to further matching the pressure of the compressed air entering the straight hole behind the foam with the pressure of the water-medicine mixture in the straight hole before the foam.

[0059] 5) The length a9 of the liquid-gas mixing hole is slightly shorter than the length A6 of the foam generating section, and the diameter d8 of the transition hole is slightly smaller than the diameter d7 of the liquid-gas mixing hole, so that the right end of the foam generating section and the left end of the transition hole form a seal, ensuring that the foam does not leak. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 The present invention is a cross-sectional view of a multifunctional foam generator along the axis line.

[0061] Figure 2 for Figure 1 Axonometric view of the liquid preparation part.

[0062] Figure 3 for Figure 1 Axonometric view of the mixing section.

[0063] Figure 4 for Figure 2 M-direction view in .

[0064] Figure 5 for Figure 3 N-way view in .

[0065] Figure 6 Figure 4 AA section view in.

[0066] Figure 7 for Figure 6 Enlarged view of part B in .

[0067] Figure 8 for Figure 5 CC section view in.

[0068] Fig. 9 for Figure 5 DD section view in.

[0069] Fig.10 for Figure 6 Another form of Figure 6 The difference is that there are two medicine inlet holes and medicine inlet thread holes.

[0070] The markings in the above drawings are as follows: liquid preparation part 1, water inlet end 1-1, axis of water inlet end 1-1-1, water inlet threaded hole 1-1-2, medicine inlet section 1-2, axis of medicine inlet section 1-2-1, conical shrinkage hole 1-2-2, medicine inlet hole 1-2-3, axis of medicine inlet hole 1-2-3-1, medicine inlet threaded hole 1-2-4, water-drug mixing straight hole 1-2-5, water-drug mixing straight hole 1-2-5, foam generation generating section 1-3, axial line of foam generating section 1-3-1, mixing hole 1-3-2, foam front cone hole 1-3-2-1, foam front straight hole 1-3-2-2, foam rear straight hole 1-3-2-3, stepped cylinder 1-3-3, first cylinder 1-3-3-1, second cylinder 1-3-3-2, third cylinder 1-3-3-3, air inlet hole 1-3-3-3-1, water medicine mixing hole, air mixing part 2.

[0071] Air inlet end 2-1, mixing section 2-2, water outlet end 2-3, axis line of the air mixing part 2-4, liquid-gas mixing hole 2-5, transition hole 2-6, water outlet threaded hole 2-7, compressed air inlet hole 2-8, air inlet threaded hole 2-9, decompression cavity 2-10.

[0072] The length of the conical shrinkage hole is a2, the length of the water-drug mixing straight hole is a4, the length of the cone hole before the foam is a5, the length of the straight hole before the foam is a6, the length of the transverse long waist hole is a7, the width of the transverse long waist hole is a8, the length of the liquid-gas mixing hole is a9, the opposite thickness of the regular polygonal cylinder of the drug inlet section is A1, the length from the left end face of the water inlet end to the axial center line of the drug inlet hole is A2, the length of the drug inlet section is A3, the length of a cylinder is A4, the length of the second cylinder is A5, the length of the foam generating section is A6, the opposite thickness of the regular polygonal cylinder at the air inlet end is A7, the air inlet The length of the end is A8, the total length of the mixing part is A9, the total length of the foam generator is A10, the large end diameter of the tapered shrinkage hole is d1, the small end diameter of the tapered shrinkage hole is d2, the diameter of the medicine inlet hole is d3, the diameter of the water-medicine mixing straight hole is d4, the large end diameter of the cone hole before the foam is d5, the diameter of the straight hole after the foam is d6, the diameter of the liquid-gas mixing hole is d7, the diameter of the transition hole is d8, the diameter of the compressed air inlet hole is d9, the outer circle diameter of the water inlet end is D1, the diameter of the first cylinder is D2, the diameter of the second cylinder is D3, and the outer diameter of the mixing section is D4.

[0073] The directions "left" and "right" described in the text of the present invention are the same as Figure 1 , Figures 6 to 10 The directions shown are the same. DETAILED DESCRIPTION

[0074] (Example 1).

[0075] See Figure 1 , 2 3. A multifunctional foam generator made of metal, comprising a liquid preparation part 1 and a gas mixing part 2.

[0076] The total length A10 of the foam generator is 161 mm.

[0077] See Figure 2 , 4 , 6, the liquid preparation part 1 includes a water inlet end 1-1, a drug inlet section 1-2 and a foam generating section 1-3 from left to right; the center of the liquid preparation part 1 is a water-drug mixing hole 1-10, and the water-drug mixing hole 1-10 includes a water inlet threaded hole 1-1-2, a conical shrinkage hole 1-2-2, a water-drug mixing straight hole 1-2-5, and a mixing hole 1-3-2; the water inlet end 1-1, the drug inlet section 1-2 and the foam generating section 1-3 are an integrated part.

[0078] See Figure 3 , 5, 8, 9, the gas mixing part 2 includes an air inlet end 2-1, a mixing section 2-2 and a water outlet end 2-3 from left to right; the air inlet end 2-1, the mixing section 2-2 and the water outlet end 2-3 are an integrated part; the center of the gas mixing part 2 is composed of 3 cylindrical holes, which are a liquid-gas mixing hole 2-5, a transition hole 2-6 and a water outlet threaded hole 2-7 from left to right.

[0079] See Figure 1 , 2 3. The foam generating section 1-3 of the liquid preparation part 1 is inserted into the liquid-gas mixing hole 2-5 of the gas mixing part 2, and the right end face of the drug inlet section 1-2 of the liquid preparation part 1 is closely fitted with the left end face of the gas inlet end 2-1 of the gas mixing part 2 and welded as a whole.

[0080] See Figure 2 , 4 , 6. The water inlet end 1-1 is a cylindrical tubular part.

[0081] The outer diameter D1 of the water inlet end 1-1 is 26 mm.

[0082] The medicine inlet section 1-2 is a cylinder coaxial with the water inlet end 1-1 and having a regular octagonal shape. The left side of the medicine inlet section 1-2 is smoothly connected to the outer cylindrical surface of the water inlet end 1-1.

[0083] The thickness A1 of the opposite side of the regular polygonal cylinder of the drug feeding section 1-2 is 47 mm; the length A3 of the drug feeding section 1-2 is 20 mm.

[0084] The foam generating section 1-3 is a cylindrical tubular member coaxial with the water inlet end 1-1 and the drug inlet section 1-2.

[0085] The length A6 of the foam generating section 1-3 is 35 mm to 48 mm, preferably 46.5 mm. The outer side of the foam generating section 1-3 is a stepped cylinder 1-3-3 with a changing outer diameter from left to right; the stepped cylinder 1-3-3 includes a first cylinder 1-3-3-1, a second cylinder 1-3-3-2, and a third cylinder 1-3-3-3.

[0086] The left side of the stepped cylinder 1-3-3 is the first cylinder 1-3-3-1, and the left end of the first cylinder 1-3-3-1 is smoothly connected to the medicine feeding section 1-2.

[0087] The diameter D2 of the first cylinder 1-3-3-1 is 15 mm; the length A4 of the first cylinder 1-3-3-1 is 2 mm.

[0088] On the right side of the first cylinder 1-3-3-1 is the second cylinder 1-3-3-2, and the diameter D3 of the second cylinder 1-3-3-2 is slightly smaller than the diameter D2 of the first cylinder 1-3-3-1.

[0089] The diameter D3 of the second cylinder 1-3-3-2 is 1.9 mm smaller than the diameter D2 of the first cylinder 1-3-3-1; the length A5 of the second cylinder 1-3-3-2 is 30 mm.

[0090] To the right of the second cylinder 1-3-3-2 is the third cylinder 1-3-3-3.

[0091] The diameter of the third cylinder 1-3-3-3 is consistent with the diameter D2 of the first cylinder 1-3-3-1.

[0092] Still see Figure 2 , 4 6. The axis line 1-1-1 of the water inlet end 1-1 is a water inlet threaded hole 1-1-2.

[0093] See Figure 2 , 6 7. The axis 1-2-1 of the medicine inlet section 1-2 is a conical shrinkage hole 1-2-2 which gradually shrinks from left to right. The left side of the conical shrinkage hole 1-2-2 is connected to the water inlet threaded hole 1-1-2 of the water inlet end 1-1; the large end diameter d1 of the conical shrinkage hole 1-2-2 is 4 mm; the small end diameter d2 of the conical shrinkage hole 1-2-2 is 2.5 mm; the length a2 of the conical shrinkage hole 1-2-2 is 15 mm.

[0094] A drug feeding hole 1-2-3 is formed at the center of one face of the regular octagon of the drug feeding section 1-2, which is perpendicular to the axis line 1-2-1 of the drug feeding section 1-2. That is, the axis line 1-2-3-1 of the drug feeding hole 1-2-3 is perpendicular to the axis line 1-2-1 of the drug feeding section 1-2, and the drug feeding hole 1-2-3 intersects and penetrates the small end of the conical shrinkage hole 1-2-2.

[0095] The diameter d3 of the medicine feed hole 1-2-3 is 2 mm; the length A2 from the left end surface of the water inlet end 1-1 to the axis 1-2-3-1 of the medicine feed hole 1-2-3 is 34 mm.

[0096] A medicine feeding threaded hole 1-2-4 coaxial with the medicine feeding hole 1-2-3 is formed on the surface of the regular octagon on the outer side of the medicine feeding section 1-2, and the medicine feeding hole 1-2-3 is connected with the medicine feeding threaded hole 1-2-4.

[0097] After the conical shrinkage hole 1-2-2 intersects with the medicine feed hole 1-2-3, it extends to the right with the water medicine mixing straight hole 1-2-5. The diameter d4 of the water medicine mixing straight hole 1-2-5 is slightly larger than the diameter d2 of the small end of the conical shrinkage hole 1-2-2 until it is connected with the mixing hole 1-3-2 of the foam generating section 1-3.

[0098] The diameter d4 of the water-medicine mixing straight hole 1-2-5 is 0.55 mm larger than the diameter d2 of the small end of the conical shrinkage hole 1-2-2; the length a4 of the water-medicine mixing straight hole 1-2-5 is 12 mm.

[0099] Still see Figure 2 , 4 6. The axis line 1-3-1 of the foam generating section 1-3 is a mixing hole 1-3-2 which is connected from left to right. The mixing hole 1-3-2 is composed of a foam front cone hole 1-3-2-1, a foam front straight hole 1-3-2-2 and a foam rear straight hole 1-3-2-3 which are connected from left to right.

[0100] The left end of the mixing hole 1-3-2 is a foam front cone hole 1-3-2-1 which is connected with the water-medicine mixing straight hole 1-2-5 of the medicine feeding section 1-2 and gradually enlarges from left to right; the right side of the foam front cone hole 1-3-2-1 is a foam front straight hole 1-3-2-2 with the large end diameter of the foam front cone hole 1-3-2-1 as the diameter, and the small end diameter of the foam front cone hole 1-3-2-1 is consistent with the diameter d4 of the water-medicine mixing straight hole 1-2-5; the right side of the foam front straight hole 1-3-2-2 is connected with the foam rear straight hole 1-3-2-3, the diameter d6 of the foam rear straight hole 1-3-2-3 is slightly larger than the diameter d5 of the foam front straight hole 1-3-2-2, and the foam rear straight hole 1-3-2-3 extends to the right until it passes through the foam generating section 1-3.

[0101] The large end diameter d5 of the foam front cone hole 1-3-2-1 is 4 mm; the length a5 of the foam front cone hole 1-3-2-1 is 8.5 mm; the length a6 of the foam front straight hole 1-3-2-2 is 18 mm; the diameter d6 of the foam rear straight hole 1-3-2-3 is 0.5 mm larger than the diameter d5 of the foam front straight hole 1-3-2-2.

[0102] Near the right side of the second cylinder 1-3-3-2, there are two air inlet holes 1-3-3-3-1 which perpendicularly intersect the axis 1-3-1 of the foam generating section 1-3 and radially penetrate the foam generating section 1-3, and the two air inlet holes 1-3-3-3-1 are axially perpendicular to each other.

[0103] See Fig.10 The regular octagon of the drug feeding section 1-2 has a drug feeding hole 1-2-3 and a drug feeding threaded hole 1-2-4 on the opposite side, and symmetrically there is another drug feeding hole 1-2-3 and a drug feeding threaded hole 1-2-4 that intersect perpendicularly with the axis 1-2-1 of the drug feeding section 1-2. The two drug feeding holes 1-2-3 intersect and penetrate the small end of the conical shrinkage hole 1-2-2.

[0104] See Figure 6 The air inlet hole 1-3-3-3-1 is a transverse long waist hole.

[0105] The length a7 of the transverse long waist hole is 5 mm, and the width a8 is 4 mm.

[0106] See Figure 3 , 5 , 8, 9, the shape of the air inlet end 2-1 of the mixing part 2 is a regular octagonal cylinder; the shape of the mixing section 2-2 is a cylinder.

[0107] The total length A9 of the gas mixing portion 2 is 117 mm.

[0108] The opposite thickness of the regular polygonal column of the air inlet end 2-1 is A7, which is consistent with the opposite thickness of the regular polygonal column of the drug inlet section 1-2, which is A1; the length of the air inlet end 2-1 is A8, which is consistent with the length A3 of the drug inlet section 1-2.

[0109] The right side of the air inlet end 2-1 is smoothly connected to the outer cylindrical surface of the mixing section 2-2.

[0110] The outer diameter of the mixing section 2-2 is D4, which is consistent with the outer diameter D1 of the water inlet end 1-1; the outer shape of the water outlet end 2-3 is a cylinder consistent with the outer shape of the mixing section 2-2.

[0111] Still see Figure 8 , 9 The axis 2-4 of the gas mixing part 2 is composed of three cylindrical holes, the left side is a liquid-gas mixing hole 2-5, the middle is a transition hole 2-6, and the right side is a water outlet threaded hole 2-7.

[0112] The diameter d7 of the liquid-gas mixing hole 2-5 is 0.5 mm larger than the diameter D2 of the first cylinder 1-3-3-1; the diameter d8 of the transition hole 2-6 is 1 mm smaller than the diameter d7 of the liquid-gas mixing hole 2-5; the length a9 of the liquid-gas mixing hole 2-5 is 0.1 mm shorter than the length A6 of the foam generating section 1-3.

[0113] A compressed air inlet hole 2-8 is formed at the center of one surface of the air inlet end 2-1 and is perpendicular to the axis 2-4 of the mixing part 2; the compressed air inlet hole 2-8 intersects and penetrates the liquid-gas mixing hole 2-5; an air inlet threaded hole 2-9 coaxial with the compressed air inlet hole 2-8 is formed on the surface of the outer regular octagon of the air inlet end 2-1 on which the compressed air inlet hole 2-8 is formed, and the compressed air inlet hole 2-8 is connected to the air inlet threaded hole 2-9.

[0114] The diameter d9 of the compressed air inlet hole 2-8 is 4 mm to 6 mm, preferably 5 mm.

[0115] The liquid preparation part 1 and the gas mixing part 2 are made of 304 stainless steel.

[0116] (Application example)

[0117] When in use, the water inlet pipe is connected to the water inlet threaded hole 1-1-2 of the liquid preparation part 1 of the foam generator, the foam raw liquid pipe is connected to the corresponding medicine inlet threaded hole 1-2-4 of the liquid preparation part 1 through one medicine inlet pipe, the disinfectant pipe is connected to another corresponding medicine inlet threaded hole 1-2-4 of the liquid preparation part 1 through another medicine inlet pipe, the compressed air pipe is connected to the air inlet threaded hole 2-9 of the air mixing part 2, and the water spray pipe is connected to the water outlet threaded hole 2-7 of the air mixing part 2. As the incoming water enters the foam generator at a relatively high velocity, the aperture of the conical shrinkage hole 1-2-2 shrinks, the water velocity increases, and negative pressure is generated. The foam concentrate and disinfectant solution are sucked into the foam generator from the inlet hole 1-2-3 by utilizing the Venturi effect; they are fully mixed into a water-drug mixed liquid in the water-drug mixing straight hole 1-2-5, the foam front conical hole 1-3-2-1, and the foam front straight hole 1-3-2-2; compressed air enters the foam generator through the air inlet threaded hole 2-9 and the compressed air inlet hole 2-8, passes through the decompression cavity 2-10 between the second cylinder 1-3-3-2 and the liquid-gas mixing hole 2-5 of the mixing part, and the air inlet hole 1-3-3-3-1, enters the foam rear straight hole 1-3-2-3, is fully mixed with the water-drug mixed liquid to form foam, and is sprayed out from the water spray pipe.

[0118] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A multifunctional foam generator, characterized in that: It comprises a liquid preparation part (1) and a gas mixing part (2); The liquid preparation part (1) comprises, from left to right, a water inlet end (1-1), a drug inlet section (1-2) and a foam generating section (1-3); the center of the liquid preparation part (1) is a water-drug mixing hole (1-10), and the water-drug mixing hole (1-10) comprises a water inlet threaded hole (1-1-2), a conical shrinkage hole (1-2-2), a water-drug mixing straight hole (1-2-5), and a mixing hole (1-3-2); the water inlet end (1-1), the drug inlet section (1-2) and the foam generating section (1-3) are an integrated part; The gas mixing part (2) comprises, from left to right, an air inlet end (2-1), a mixing section (2-2) and a water outlet end (2-3); the air inlet end (2-1), the mixing section (2-2) and the water outlet end (2-3) are an integral part; the center of the gas mixing part (2) is composed of three cylindrical holes, which are, from left to right, a liquid-gas mixing hole (2-5), a transition hole (2-6) and a water outlet threaded hole (2-7); The foam generating section (1-3) of the liquid preparation part (1) is inserted into the liquid-gas mixing hole (2-5) of the gas mixing part (2), and the right end surface of the drug inlet section (1-2) of the liquid preparation part (1) is closely fitted with the left end surface of the gas inlet end (2-1) of the gas mixing part (2) and welded into one body; The water inlet end (1-1) is a cylindrical tubular member; The medicine inlet section (1-2) is a cylinder coaxial with the water inlet end (1-1) and having a regular polygonal shape, and the left side of the medicine inlet section (1-2) is smoothly connected to the outer cylindrical surface of the water inlet end (1-1); The foam generating section (1-3) is a cylindrical tubular member coaxial with the water inlet end (1-1) and the drug inlet section (1-2); The outer side surface of the foam generating section (1-3) is a stepped cylinder (1-3-3) whose outer diameter changes from left to right; the stepped cylinder (1-3-3) comprises a first cylinder (1-3-3-1), a second cylinder (1-3-3-2), and a third cylinder (1-3-3-3); The left side of the stepped cylinder (1-3-3) is a first cylinder (1-3-3-1), and the left end of the first cylinder (1-3-3-1) is smoothly connected to the medicine feeding section (1-2); The right side of the first cylinder (1-3-3-1) is the second cylinder (1-3-3-2), and the diameter D3 of the second cylinder (1-3-3-2) is slightly smaller than the diameter D2 of the first cylinder (1-3-3-1); The right side of the second cylinder (1-3-3-2) is a third cylinder (1-3-3-3), and the diameter of the third cylinder (1-3-3-3) is consistent with the diameter D2 of the first cylinder (1-3-3-1); The axis line (1-1-1) of the water inlet end (1-1) is located at a water inlet threaded hole (1-1-2); The axis (1-2-1) of the drug inlet section (1-2) is a conical shrinkage hole (1-2-2) that gradually shrinks from left to right, and the left side of the conical shrinkage hole (1-2-2) is connected to the water inlet threaded hole (1-1-2) of the water inlet end (1-1); A drug feeding hole (1-2-3) perpendicularly intersecting the axis (1-2-1) of the drug feeding section (1-2) is formed at the center of one face of the regular polygon of the drug feeding section (1-2), that is, the axis (1-2-3-1) of the drug feeding hole (1-2-3) perpendicularly intersects the axis (1-2-1) of the drug feeding section (1-2), and the drug feeding hole (1-2-3) intersects and penetrates the small end of the conical shrinkage hole (1-2-2); a drug feeding threaded hole (1-2-4) coaxial with the drug feeding hole (1-2-3) is formed on the face of the regular polygon on the outside of the drug feeding section (1-2) on which the drug feeding hole (1-2-3) is formed, and the drug feeding hole (1-2-3) is connected to the drug feeding threaded hole (1-2-4); After the conical shrinkage hole (1-2-2) intersects with the medicine feeding hole (1-2-3), it extends to the right through the water medicine mixing straight hole (1-2-5); the diameter d4 of the water medicine mixing straight hole (1-2-5) is slightly larger than the diameter d2 of the small end of the conical shrinkage hole (1-2-2) until it is connected with the mixing hole (1-3-2) of the foam generating section (1-3); The axis (1-3-1) of the foam generating section (1-3) is a mixing hole (1-3-2) that is connected from left to right. The mixing hole (1-3-2) is composed of a foam front cone hole (1-3-2-1), a foam front straight hole (1-3-2-2) and a foam rear straight hole (1-3-2-3) that are connected from left to right. The left end of the mixing hole (1-3-2) is a foam front cone hole (1-3-2-1) which is connected to the water-medicine mixing straight hole (1-2-5) of the medicine feeding section (1-2) and gradually enlarges from left to right; the right side of the foam front cone hole (1-3-2-1) is a foam front straight hole (1-3-2-2) having a diameter based on the large end diameter of the foam front cone hole (1-3-2-1); the small end diameter of the foam front cone hole (1-3-2-1) is consistent with the diameter d4 of the water-medicine mixing straight hole (1-2-5); the right side of the foam front straight hole (1-3-2-2) is connected to the foam rear straight hole (1-3-2-3); the diameter d6 of the foam rear straight hole (1-3-2-3) is slightly larger than the diameter d5 of the foam front straight hole (1-3-2-2); the foam rear straight hole (1-3-2-3) extends to the right until it passes through the foam generating section (1-3); Near the right side of the second cylinder (1-3-3-2), there are two air inlet holes (1-3-3-3-1) perpendicularly intersecting the axis (1-3-1) of the foam generating section (1-3) and radially penetrating the foam generating section (1-3), and the two air inlet holes (1-3-3-3-1) are axially perpendicular to each other; The axis (2-4) of the gas mixing part (2) is composed of three cylindrical holes, a liquid-gas mixing hole (2-5) on the left, a transition hole (2-6) in the middle, and a water outlet threaded hole (2-7) on the right; the diameter d7 of the liquid-gas mixing hole (2-5) is slightly larger than the diameter D2 of the first cylinder (1-3-3-1); the diameter d8 of the transition hole (2-6) is slightly smaller than the diameter d7 of the liquid-gas mixing hole (2-5); the length a9 of the liquid-gas mixing hole (2-5) is slightly shorter than the length A6 of the foam generating section (1-3); A compressed air inlet hole (2-8) perpendicularly intersecting the axis (2-4) of the mixing portion (2) is formed at the center of one surface of the inlet end (2-1); the compressed air inlet hole (2-8) intersects and penetrates the liquid-gas mixing hole (2-5); an inlet threaded hole (2-9) coaxial with the compressed air inlet hole (2-8) is formed on the surface of the outer regular polygon of the inlet end (2-1) on which the compressed air inlet hole (2-8) is formed, and the compressed air inlet hole (2-8) is connected to the inlet threaded hole (2-9); A decompression cavity (2-10) is formed between the second cylinder (1-3-3-2) and the liquid-gas mixing hole (2-5) of the gas mixing part; The regular polygon of the drug feeding section (1-2) has a drug feeding hole (1-2-3) and a drug feeding threaded hole (1-2-4) opposite to the surface, and symmetrically has another drug feeding hole (1-2-3) and a drug feeding threaded hole (1-2-4) perpendicularly intersecting the axis (1-2-1) of the drug feeding section (1-2), and the two drug feeding holes (1-2-3) intersect and penetrate with the small end of the conical shrinkage hole (1-2-2).

2. A multifunctional foam generator according to claim 1, characterized in that: The air inlet hole (1-3-3-3-1) is a transverse long waist hole.

3. A multifunctional foam generator according to claim 1, characterized in that: The air inlet end (2-1) of the air mixing part (2) has an outer shape of a regular polygonal cylinder; the mixing section (2-2) has an outer shape of a cylinder; and the water outlet end (2-3) has an outer shape of a cylinder. The right side of the air inlet end (2-1) is smoothly connected to the outer cylindrical surface of the mixing section (2-2).

4. A multifunctional foam generator according to claim 1, characterized in that: The diameter D2 of the first cylinder (1-3-3-1) is 14 mm to 16 mm; the length A4 of the first cylinder (1-3-3-1) is 1.5 mm to 2.5 mm; The diameter D3 of the second cylinder (1-3-3-2) is 1.5 mm to 2.5 mm smaller than the diameter D2 of the first cylinder (1-3-3-1); the length A5 of the second cylinder (1-3-3-2) is 29 mm to 31 mm.

5. A multifunctional foam generator according to claim 1, characterized in that: The large end diameter d1 of the conical shrinkage hole (1-2-2) is 3 mm to 5 mm; the small end diameter d2 of the conical shrinkage hole (1-2-2) is 2 mm to 3 mm; the length a2 of the conical shrinkage hole (1-2-2) is 13 mm to 17 mm; The diameter d4 of the water-medicine mixing straight hole (1-2-5) is 0.3 mm to 0.7 mm larger than the diameter d2 of the small end of the conical shrinkage hole (1-2-2); The large end diameter d5 of the foam front cone hole (1-3-2-1) is 3.5 mm to 4.5 mm; The length a4 of the water-medicine mixing straight hole (1-2-5) is 11 mm to 13 mm; the length a5 of the foam front cone hole (1-3-2-1) is 8 mm to 9 mm; The length a6 of the front straight hole (1-3-2-2) of the foam is 16 mm to 20 mm; The diameter d6 of the foam rear straight hole (1-3-2-3) is 0.3 mm to 0.7 mm larger than the diameter d5 of the foam front straight hole (1-3-2-2).

6. A multifunctional foam generator according to claim 1, characterized in that: The diameter d7 of the liquid-gas mixing hole (2-5) is 0.4 mm to 0.6 mm larger than the diameter D2 of the first cylinder (1-3-3-1); The length a9 of the liquid-gas mixing hole (2-5) is 0.1 mm to 0.2 mm shorter than the length A6 of the foam generating section (1-3).

7. A multifunctional foam generator according to claim 1, characterized in that: The medicine feeding section (1-2) is provided with two medicine feeding holes (1-2-3), one of which is used to connect with foam stock solution, and the other is used to connect with disinfectant or other medicine solution, so that cleaning and disinfection can be carried out simultaneously, thus realizing multifunctional work.

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