Mixed type foam pump

Abstract

The invention discloses a mixed type foam pump which comprises a shell, a liquid pumping assembly, an air pumping assembly and a driving assembly, wherein the liquid pumping assembly, the air pumping assembly and the driving assembly are installed in the shell. The liquid pumping assembly comprises a planetary gear, a roller and an elastic hose; the planetary gear is provided with a plurality of planetary gears, a planetary shaft of each planetary gear extends upwards, and each extended planetary shaft is coaxially sleeved with a rotatable roller; annular positioning grooves located on the outer sides of the idler wheels are formed in the shell, the elastic hose is installed in the annular positioning grooves, the two ends of the elastic hose are communicated with one connector of the liquid inlet tee joint and one connector of the liquid outlet tee joint in a one-to-one correspondence mode, and all the idler wheels are driven by the planetary gears to extrude the elastic hose. The solution of the liquid inlet tee joint is pumped to the liquid outlet tee joint; the air pumping assembly comprises a piston cylinder and a piston rod. The air pumping function and the foam manufacturing function are added, the air pump, liquid pumping and foam manufacturing are combined into a whole, the structure is compact, and the size is smaller than that of a foam pump.

Description

Technical Field

[0001] The invention belongs to the technical field of foam pumps, and in particular relates to a mixing foam pump. Background Art

[0002] Existing peristaltic pumps are positive displacement pumps that transport fluids by squeezing an elastic hose through a rotating roller or cam. Existing foam pumps, on the other hand, use the rotation of the impeller to generate centrifugal force in the slurry, which swings the slurry from the center of the impeller to the outer edge of the impeller, separating the foam from the slurry. The separated liquid is then discharged along the pump's outlet pipe under the push of the impeller, while the foam is discharged from the pump body through a dedicated foam discharge port. Because the impeller of the foam pump is in direct contact with the solution, it is not suitable for corrosive solutions or solutions with high hygiene requirements. The elastic hose of the peristaltic pump isolates the solution and prevents it from contacting other parts of the pump body. In terms of anti-pollution and high isolation requirements, the peristaltic pump makes up for the shortcomings of the foam pump. Therefore, peristaltic foam pumps have achieved better results than centrifugal foam pumps in certain fields, such as industry, medical care, and sewage treatment. However, peristaltic foam pumps still have the following shortcomings when used in these fields: For example, in the sugar and paper industries, foam pumps are used to transport foamy sugar solutions, syrups, or bagasse slurries during the sugar production process. These pumps are used to process various foamy intermediate products or waste products during the sugarcane and beet sugar production processes. Because sugar solutions and syrups contain many impurities and are not simple solutions, diaphragm pumps, while effectively preventing corrosion of the pump body, can easily clog the flexible hoses with impurities. Consequently, existing sugar refineries still use centrifugal foam pumps. However, this type of pump cannot prevent corrosion of the pump head and impeller caused by the sugar solution, requiring regular replacement of the pump head. Consequently, these foam pumps in the sugar industry have a short service life and a relatively high failure rate.

[0003] For example, in the medical field, foam pumps can convert gel-based disinfectants into disinfectant foam. Compared to liquid disinfectants, disinfectant foam can significantly increase the disinfection area, effectively remove bacteria, and reduce the risk of cross-infection. It can also be used to clean and disinfect the surfaces of some medical equipment. However, the same disinfectant has different inhibitory effects on different types of bacteria. Areas such as operating rooms and sterile wards require a more comprehensive disinfection effect, which requires mixing different types of gel-based disinfectants. However, existing foam pumps only pump liquids and cannot evenly mix multiple disinfectants, thus affecting the overall disinfection effect. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a mixing foam pump, comprising a housing, and a pump liquid component, a pump air component and a drive component installed inside the housing; the pump liquid component includes a planetary gear, a roller and an elastic hose; the planetary gear is provided with a plurality of planetary wheels, the planetary shaft of each planetary wheel extends upward, and each extended planetary shaft is coaxially sleeved with a rotatable roller; the interior of the housing is provided with an annular positioning groove located outside the roller, the elastic hose is installed in the annular positioning groove, and the two ends of the elastic hose are connected to a joint in the liquid inlet tee and a joint in the liquid outlet tee in a one-to-one correspondence. , all the rollers are driven by the planetary gear to squeeze the elastic hose, and then the solution in the liquid inlet tee is pumped to the liquid outlet tee; the air pump assembly includes a piston cylinder and a piston rod; the piston cylinder exhaust valve is connected to the exhaust joint of the outer shell, and the piston cylinder intake valve is connected to the air inlet hole on the side of the outer shell, and the piston body is driven to reciprocate in the piston cylinder by the piston rod, and then the air outside the shell is pumped to the exhaust joint; the driving assembly includes a rotating motor and a telescopic motor; the rotating shaft of the rotating motor is coaxially fixed with the sun gear of the planetary gear, and the telescopic shaft of the telescopic motor passes through the rotating shaft and the sun gear and is transmission-connected to the piston rod.

[0005] The preferred embodiment of the hybrid foam pump of the present invention comprises three piston cylinders and three piston rods, each corresponding to a corresponding piston cylinder. The three piston cylinders are evenly distributed circumferentially within the housing, and the lower ends of the three piston rods are fixedly connected to the upper end of the telescopic shaft via a three-axis connector. The three-axis connector connects the three piston rods to the telescopic shaft. As the telescopic shaft reciprocates up and down, the three piston rods correspondingly and synchronously reciprocate linearly within the piston cylinders. The three piston cylinders simultaneously pump air, creating a high-speed airflow that generates negative pressure in the liquid outlet tee, facilitating the removal of solution from the elastic hose and effectively resolving the problems of solution residue and dripping.

[0006] A preferred embodiment of the hybrid foam pump of the present invention comprises a rotating motor positioned above the telescopic motor, with the lower end of the rotating shaft extending from the rotating motor and having an axial through-hole adapted to mate with the telescopic shaft. The rotating motor is a dual-shaft motor, and the telescopic shaft can reciprocate up and down within the axial through-hole of the rotating shaft without interfering with the rotation of the rotating shaft. The two shafts move independently and without conflict.

[0007] A preferred embodiment of the mixing foam pump of the present invention comprises: the exhaust connector is connected to the upper end of the liquid outlet tee via a conduit. The lower end of the liquid outlet tee serves as the foam outlet. A narrow channel is provided within the liquid outlet tee, similar to a Venturi tube structure. High-speed airflow flows downward from top to bottom, creating negative pressure at the central joint of the liquid outlet tee. The solution is then drawn into the tee and mixed with the airflow to form foam.

[0008] A preferred embodiment of the mixing foam pump of the present invention comprises valves at the other ends of the liquid inlet tee. The other two connectors of the liquid inlet tee are connected to pipelines containing two different solutions. The valves can be selectively opened and closed to simultaneously pump in and mix the two solutions, meeting various usage requirements.

[0009] A preferred embodiment of the mixing foam pump of the present invention comprises a squeezing wheel disposed inside the rollers, with notches corresponding to all rollers on the side of the squeezing wheel and a squeezing groove in the middle of the side of the squeezing wheel adapted to the elastic hose. The squeezing wheel reciprocates up and down to squeeze the elastic hose, thereby mixing the solutions within the hose. Conventional peristaltic pumps can only pump solutions but cannot mix them. The squeezing wheel, on the other hand, simultaneously applies an up and down squeezing action to the elastic hose while pumping liquid, mixing the solutions within the hose. This makes it particularly suitable for mixing two or more solutions.

[0010] To simultaneously satisfy the requirements for the extrusion wheel's up-and-down reciprocating motion and synchronous rotation with the roller, the preferred embodiment of the hybrid foam pump of the present invention comprises: a sun gear extending upwardly, the extrusion wheel having a gear groove adapted for the sun gear, which allows the extrusion wheel to be sleeved onto the sun gear via the gear groove, thereby enabling the extrusion wheel to slide axially relative to the sun gear and rotate synchronously. The lower end of the three-axis connecting member is rotatably connected to the extrusion wheel via a bearing; the inner ring of the bearing is coaxially fixed to the lower end of the three-axis connecting member, and the outer ring of the bearing is fixedly connected to the upper surface of the extrusion wheel via a plurality of fixing posts, with the sun gear positioned between the fixing posts.

[0011] The beneficial effects of the hybrid foam pump of the present invention are: 1. Compared with existing foam pumps, the solution only flows in the elastic pipe and does not come into contact with other parts of the pump, avoiding the risk of solution contamination and preventing the pump body from being corroded by the solution. It is particularly suitable for the fields of medical disinfection and sugar production.

[0012] 2. While meeting isolation and corrosion protection requirements, the roller applies transverse compression to the flexible hose, while the extrusion wheel applies longitudinal compression. These two extrusion methods are staggered to mix the solution within the flexible hose, meeting the hospital's need for a variety of gel-based disinfectants. Furthermore, these two extrusion methods prevent debris from accumulating in the flexible hose, effectively resolving the problem of impurities in the sugar solution clogging the foam pump during the sugar production process.

[0013] 3. Compared with the existing peristaltic pump, it combines the air pump, pumping liquid and foam making into one, with a compact structure and smaller volume than the foam pump. The rotating motor and the telescopic motor both adopt a special output method and combined structure, which is more compact and meets the installation requirements of small foam making machines. At the same time, the two do not affect each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A perspective view of a mixing foam pump according to the present invention; Figure 2 for Figure 1 Schematic diagram of the part behind the hidden shell; Figure 3 for Figure 2 Schematic diagram after hiding the cage; Figure 4 for Figure 3 Schematic diagram after hiding the elastic hose; Figure 5 for Figure 4 Schematic diagram after the pump air components are hidden.

[0016] Figure numerals: housing 1, roller 2, elastic hose 3, planetary gear 4, planetary shaft 5, rotating motor 7, sun gear 8, piston cylinder 9, piston rod 10, three-axis connecting part 11, extrusion wheel 12, notch 13, extrusion groove 14, gear groove 15, bearing 16, fixing column 17, liquid inlet tee 18, liquid outlet tee 19, conduit 21, air inlet hole 22, retaining frame 23, telescopic motor 24, exhaust joint 25, telescopic shaft 26. DETAILED DESCRIPTION

[0017] In view of the deficiencies in the prior art, the inventors of this case have proposed the technical solution of the present invention after long-term research and extensive practice. The following will further explain the technical solution, its implementation process and principles, etc. in conjunction with the drawings in the embodiments of this application and specific implementation cases.

[0018] like Figure 1 and Figure 5As shown, this embodiment provides a mixing foam pump, comprising a housing 1, and a pump liquid assembly, a pump air assembly, and a drive assembly installed inside the housing 1, wherein the pump liquid assembly includes a planetary gear, a roller 2, and an elastic hose 3; the planetary gear is provided with three planetary wheels 4, and the planetary shaft 5 of each planetary wheel 4 extends upward, and each extended planetary shaft 5 is coaxially sleeved with a rotatable roller 2, that is, the roller 2 can rotate on the corresponding planetary shaft 5. The interior of the housing 1 is provided with an annular positioning groove located outside the roller 2, and the elastic hose 3 is installed in the annular positioning groove. The roller 2 squeezes the elastic hose 3 along the annular positioning groove, and the two form rolling friction rather than sliding friction. During the squeezing process, the elastic hose 3 is always confined in the annular positioning groove and does not dislocate.

[0019] like Figure 3 and Figure 4 As shown, the planetary gear ring gear of this embodiment is fixed in the housing 1, the planetary gear carrier is mounted at the lower end of all planetary shafts 5, and a retaining frame 23 is also provided at the upper end of the planetary shafts 5. The drive assembly in this embodiment includes a rotary motor 7, the rotary shaft of which is coaxially fixed with the sun gear 8 of the planetary gear. The rotary motor 7 drives the sun gear 8 to rotate, and all the planetary gears 4 rotate around the sun gear 8 in the ring gear. Simultaneously, the three rollers 2 squeeze the elastic hose 3 during the synchronous rotation process, and the process of delivering and discharging the solution in the elastic hose 3 is repeated continuously, thereby achieving continuous delivery of the solution.

[0020] The pumping principle of the above structure is the same as that of a peristaltic pump, and the specific principle and structure of generating foam in this embodiment are as follows: like Figure 3 、 Figure 4 and Figure 5As shown, the air pump assembly in this embodiment includes a piston cylinder 9 and a piston rod 10. The exhaust valve of the piston cylinder 9 is connected to the exhaust joint 25 of the housing 1, and the intake valve of the piston cylinder 9 is connected to the air inlet hole 22 on the side of the housing 1. The telescopic shaft 26 of the telescopic motor 24 in this embodiment passes through the rotating shaft and the sun gear 8 and is transmission-connected to the piston rod 10. The piston body is driven to reciprocate in the piston cylinder 9 by the piston rod 10, thereby pumping air outside the housing to the exhaust joint 25. The specific connection structure of the telescopic motor 24 and the rotating motor 7 is as follows: the rotating motor 7 is located at the upper end of the telescopic motor 24, the lower end of the rotating shaft extends from the rotating motor 7, and the rotating shaft is provided with an axial through hole adapted for the telescopic shaft 26. The rotating motor 7 is a dual-shaft motor. The telescopic shaft 26 can reciprocate up and down in the axial through hole of the rotating shaft without affecting the rotation of the rotating shaft. The motion trajectories of the two do not conflict and they move independently. To increase the pumping volume and pressure, three piston cylinders 9 and three piston rods 10 are provided in this embodiment, with each piston cylinder 9 corresponding to each other. The three piston cylinders 9 are evenly distributed along the circumference of the housing 1, and the lower ends of the three piston rods 10 are fixedly connected to the upper end of the telescopic shaft 26 via a three-axis connector 11. The function of the three-axis connector 11 is to connect the three piston rods 10 to the telescopic shaft 26. The telescopic shaft 26 reciprocates up and down, and the three piston rods 10 correspondingly reciprocate linearly in the piston cylinder 9 synchronously. The three piston cylinders 9 pump air simultaneously, and the resulting high-speed airflow creates a negative pressure in the liquid outlet tee 19, which facilitates the suction of the solution from the elastic hose 3 and effectively solves the problem of solution residue and dripping.

[0021] like Figure 4 and Figure 5As shown, in this embodiment, an extrusion wheel 12 is provided on the inner side of the roller 2. The side of the extrusion wheel 12 is provided with notches 13 corresponding to all rollers 2, and the middle portion of the side of the extrusion wheel 12 is provided with an extrusion groove 14 adapted to the elastic hose 3. When the extrusion wheel 12 is in the middle position, the elastic hose 3 is precisely located in the extrusion groove 14. The elastic hose 3 is not squeezed by the extrusion wheel 12, but the up and down reciprocating motion of the extrusion wheel 12 can squeeze the elastic hose 3, thereby mixing the solution within the elastic hose 3. Conventional peristaltic pumps can only pump solutions but cannot mix them. The function of the extrusion wheel 12, on the other hand, is to apply an up and down reciprocating squeezing action to the elastic hose 3 while pumping the liquid, thereby mixing the solution within the elastic hose 3. This is particularly suitable for mixing two or more solutions. Furthermore, to simultaneously accommodate the reciprocating motion of the extrusion wheel 12 and its synchronous rotation with the roller 2, the sun gear 8 extends upward. The extrusion wheel 12 is provided with a gear slot 15 adapted to the sun gear 8. The gear slot 15 allows the extrusion wheel 12 to be sleeved onto the sun gear 8, allowing the extrusion wheel 12 to slide axially relative to the sun gear 8 and rotate synchronously. The lower end of the three-axis connector 11 is rotatably connected to the extrusion wheel 12 via a bearing 16. The inner ring of the bearing 16 is coaxially fixed to the lower end of the three-axis connector 11, and the outer ring of the bearing 16 is fixedly connected to the upper surface of the extrusion wheel 12 via three fixing posts 17, with the sun gear 8 positioned between the fixing posts 17. The three fixing posts 17 are evenly distributed along the circumference, with spaces formed between each two adjacent fixing posts 17, through which lubricating oil can be added between the sun gear 8 and the gear slot 15.

[0022] The squeezing wheel 12 rotates synchronously with all the rollers 2, but it also moves back and forth linearly with the telescopic shaft 26. The elastic hose 3 is squeezed by the rollers 2, and the solution flows in the elastic hose 3. At the same time, it is squeezed in the up and down directions by the squeezing wheel 12. The two squeezing operations are staggered and do not conflict with each other. The solutions are stirred and mixed in the elastic hose 3. Multiple solutions are mixed and then discharged. This is a multi-solution mixing function that current foam pumps do not have.

[0023] The specific pipeline connections in this embodiment are as follows: like Figure 1 and Figure 2As shown, the ends of the elastic hose 3 are connected to a connector in the liquid inlet tee 18 and a connector in the liquid outlet tee 19, respectively, in a one-to-one correspondence. The other two ends of the liquid inlet tee 18 are each equipped with a valve (not shown). These connectors are connected to pipelines containing two different solutions. The valves can be selectively opened and closed, allowing the two solutions to be pumped in and mixed simultaneously to meet various usage requirements. The valve opening can be adjusted to control the mixing ratio of the two liquids. Furthermore, the liquid inlet tee 18 in this embodiment can also be replaced with a four-way or five-way liquid inlet, that is, for mixing more than two solutions. The selection can be based on the needs and is not limited to this embodiment. The exhaust joint 25 is connected to the upper end of the liquid outlet tee 19 through the conduit 21. The lower end of the liquid outlet tee 19 is the foam discharge outlet. A narrow channel is provided in the liquid outlet tee 19, which has the same structure as a Venturi tube. The high-speed airflow flows from top to bottom. At the same time, the roller 2 squeezes the elastic hose 3, and the liquid outlet tee 19 continuously squeezes out a solution or a mixture of multiple solutions. A negative pressure is formed at the joint in the middle of the liquid outlet tee 19, and the solution is sucked into the liquid outlet tee 19 and mixed with the airflow to form foam.

[0024] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make some simple deductions or substitutions without departing from the concept of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A mixing foam pump, characterized in that: It includes a housing, and a pump liquid component, a pump gas component and a drive component installed inside the housing; The pump assembly includes a planetary gear, a roller, and an elastic hose. The planetary gear is provided with a plurality of planetary wheels, the planetary shaft of each planetary wheel extends upward, and each of the extended planetary shafts is coaxially sleeved with a rotatable roller. The interior of the housing is provided with an annular positioning groove located outside the roller, and the elastic hose is installed in the annular positioning groove. The two ends of the elastic hose are connected to a joint in the liquid inlet tee and a joint in the liquid outlet tee in a one-to-one correspondence. The planetary gear drives all the rollers to squeeze the elastic hose, thereby pumping the solution in the liquid inlet tee to the liquid outlet tee. The pump air assembly includes a piston cylinder and a piston rod; the piston cylinder exhaust valve is connected to the exhaust joint of the shell, and the piston cylinder intake valve is connected to the intake hole on the side of the shell. The piston body is driven to reciprocate in the piston cylinder by the piston rod, thereby pumping the air outside the shell to the exhaust joint; The driving assembly includes a rotating motor and a telescopic motor; the rotating shaft of the rotating motor is coaxially fixed with the sun gear of the planetary gear, and the telescopic shaft of the telescopic motor passes through the rotating shaft and the sun gear and is then transmission-connected to the piston rod; An extrusion wheel is provided on the inner side of the roller, and notches corresponding to all the rollers are provided on the side of the extrusion wheel, and an extrusion groove adapted to the elastic hose is provided in the middle of the side of the extrusion wheel. The extrusion wheel reciprocates up and down to extrude the elastic hose, thereby mixing the solution in the elastic hose.

2. A mixing foam pump according to claim 1, characterized in that: There are three piston cylinders and three piston rods respectively, and the three piston cylinders correspond to the three piston rods one by one; the three piston cylinders are evenly distributed in the shell along the circumference, and the lower ends of the three piston rods are fixedly connected to the upper end of the telescopic shaft through a three-axis connecting piece.

3. A mixing foam pump according to claim 1, characterized in that: The rotating motor is located at the upper end of the telescopic motor, the lower end of the rotating shaft extends from the rotating motor, and the rotating shaft is provided with an axial through hole adapted to the telescopic shaft.

4. A mixing foam pump according to claim 1, characterized in that: The exhaust joint is communicated with the upper end of the liquid outlet tee through a conduit.

5. The hybrid foam pump according to claim 1, characterized in that: The other two ends of the liquid inlet tee are respectively provided with valves.

6. The hybrid foam pump according to claim 1, characterized in that: The sun wheel extends upward, and the extrusion wheel is provided with a gear groove adapted to the sun wheel. The extrusion wheel is sleeved on the sun wheel through the gear groove, so that the extrusion wheel can slide axially relative to the sun wheel and rotate synchronously.

7. A mixing foam pump according to claim 6, characterized in that: The lower end of the three-axis connecting member is rotatably connected to the extrusion wheel through a bearing; the inner ring of the bearing is coaxially fixed to the lower end of the three-axis connecting member, and the outer ring of the bearing is fixedly connected to the upper surface of the extrusion wheel through a plurality of fixing columns, and the sun gear is located between the fixing columns.

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