Adjustable peristaltic pump

Abstract

The application discloses a kind of adjustable peristaltic pumps, including shell, hollowly being provided with operating cavity in shell, operating cavity is provided with the pedestal of outside hose arrangement, pedestal is circular table, the outer peripheral wall surface of pedestal is the lamination surface for outside hose winding and lamination, pedestal bottom is provided with the accommodating groove for after outside hose around lamination surface, its both ends are inserted and are accommodated, perforation is opened in the outer wall of shell, the fixing member for being used to fixed outside hose both ends in accommodating groove is set on pedestal, disc is provided in operating cavity, disc is provided with several extrusion columns for extruding outside hose, several extrusion columns are all in the outside of pedestal, adjusting member for adjusting the position of extrusion column on disc is provided on disc, driving member for driving disc rotation and making extrusion column periodically extruding outside hose is provided on disc.The application solves the problem that conventional peristaltic pump is difficult to adapt to different size infusion hose in prior art.

Description

Technical Field

[0001] This invention relates to the field of peristaltic pump technology, specifically to an adjustable peristaltic pump. Background Technology

[0002] Peristaltic pumps are used for transporting liquids or solid-liquid mixtures. They work by continuously pressing and releasing the pump tubing using rollers or sliders to achieve this. Because the liquid or solid-liquid mixture is constantly enclosed in the pump tubing during transport, contamination within the pump body is prevented. A peristaltic pump consists of three parts: a drive unit, a pump head, and a hose. The main competitive advantages of peristaltic pumps include fluid isolation within the pump tubing, quick tubing replacement, reversible flow, dry operation, and low maintenance costs. However, existing peristaltic pumps are of a fixed size, meaning the hose size is also fixed, and the internal impeller cannot be adjusted according to hose size. Therefore, peristaltic pumps struggle to compress hoses of different sizes; oversized hoses are difficult to fit into the pump's reservoir, while undersized hoses tend to wobble within the reservoir, resulting in inaccurate liquid delivery. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides an adjustable peristaltic pump, which solves the problem that conventional peristaltic pumps in the prior art are difficult to adapt to infusion tubing of different sizes.

[0004] To achieve the above objectives, the present invention provides an adjustable peristaltic pump, comprising a housing, a hollow operating chamber, a base for accommodating an external hose within the operating chamber, the base being frustoconical in shape, the outer peripheral wall of the base serving as a contact surface for the external hose to be wound and fitted, a receiving groove at the bottom of the base for the external hose to pass through and be accommodated after it has been wound around the contact surface, a through hole on the outer wall of the housing for communicating with the operating chamber and for the two ends of the external hose to pass through the receiving groove, a fixing member on the base for fixing the two ends of the external hose in the receiving groove, a disc within the operating chamber, a plurality of squeezing columns on the disc for squeezing the external hose, the squeezing columns being located outside the base, an adjusting member on the disc for adjusting the position of the squeezing columns on the disc, and a driving member on the disc for driving the disc to rotate and causing the squeezing columns to periodically squeeze the external hose.

[0005] The advantages of adopting the above technical solution are as follows: The operator installs the hose in the operating chamber, wraps the hose around and fits it against the mating surface, then places both ends of the hose into the receiving groove and fixes it with the fixing component. The position of the squeezing column on the disc is then adjusted using the adjusting component, ensuring that the squeezing column always presses against the outer wall of the hose. After assembling the housing and installing it on an external tooling, the operator can activate the drive component when the peristaltic pump needs to pump liquid. The drive component drives the disc to rotate, causing the squeezing column to press against the hose, thus enabling the periodic pumping of liquid in the hose. The adjusting component in the above technology allows the peristaltic pump to adapt to different... The same size hose, whether too small or too large, can be squeezed by the extrusion column for liquid pumping, thus improving the adaptability and reducing the cost of purchasing peristaltic pumps of different sizes. At the same time, it can also avoid the problem of incorrect liquid pumping volume due to excessive gap between the extrusion column and the hose, thereby avoiding errors in pumping accuracy. The setting of the fixing component in the above technology can effectively fix both ends of the hose, thereby preventing the hose from shaking in the container. At the same time, the perforation setting allows both ends of the hose to pass through the housing and connect to external tooling equipment. The peristaltic pump principle in the above technology is existing technology, so the method and process of pumping liquid with the hose will not be described in detail.

[0006] The invention further comprises: a sliding groove is provided on the disc corresponding to each extrusion column position; each sliding groove extends from the edge of the disc toward the center of the disc; a slider is provided at the bottom of each extrusion column; each slider is slidably disposed in a corresponding and adjacent sliding groove; a movable groove is provided on one side of each sliding groove; each sliding groove is connected to its adjacent movable groove by a through groove; a force-bearing plate is movably disposed in each movable groove; the adjusting component includes a buckle plate disposed in each through groove; the inner wall of each buckle plate is connected to the outer wall of its adjacent force-bearing plate; the outer wall of each buckle plate abuts against the outer wall of its adjacent slider; a driving spring is provided in the movable groove for driving the force-bearing plate to slide, thereby causing the buckle plate to slide in the through groove and buckle against the slider; an adjusting groove is provided on the disc corresponding to each through groove position; a push rod is provided in each adjusting groove for external operation personnel to push; each push rod is connected to its adjacent buckle plate.

[0007] The advantages of adopting the above technical solution are as follows: When the position of the extrusion column needs to be adjusted, the operator moves the push rod, causing the push rod to move the buckle plate in the groove. The movement of the buckle plate causes the force plate to slide in the movable groove. At this time, the force plate compresses the drive spring, causing the drive spring to deform. The operator then slides the extrusion column, causing the slider of the extrusion column to slide in the groove. When the slider slides to the designated position, the operator releases the push rod, so that the drive spring is no longer compressed. At this time, the mechanical force generated by the deformation of the drive spring drives the force plate to slide in the movable groove, thereby causing the buckle plate to buckle against the slider. At this time, the slider is buckled and cannot slide in the groove, thus achieving the limiting and fixing of the extrusion column on the disc. The above technology makes it convenient for the operator to adjust the position of the extrusion column on the disc, so that the extrusion column can buckle against hoses of different sizes and diameters, thereby improving the adaptability and ensuring the normal pumping of liquid in the hose.

[0008] The present invention further comprises: the side of the buckle plate that contacts the slider is a limiting surface, the limiting surface is provided with a first tooth pattern along the length direction of the buckle plate, the slider is provided with a second tooth pattern, and the first tooth pattern and the second tooth pattern are engaged.

[0009] The advantage of adopting the above technical solution is that the meshing of the first and second teeth in the above technology further limits the connection strength between the buckle plate and the slider, and avoids the problem of the extrusion column moving on the disc when the extrusion column extrudes the hose.

[0010] The present invention further comprises: the fixing member including a pressing plate and a fixing rod, the pressing plate being located at the center of the receiving groove and the axis of the pressing plate being aligned with the axis of the circular disk, the outer peripheral wall of the pressing plate being a fixing surface for pressing the outer walls of both ends of the external hose, a first opening penetrating through the center of the pressing plate, a second opening being provided on the housing corresponding to the position of the first opening, the pressing plate being detachably connected to the housing by the fixing rod, and the two ends of the fixing rod being threadedly connected to the first opening and the second opening respectively.

[0011] The advantage of adopting the above technical solution is that the extrusion disc can be detachably connected to the operating chamber, so that the operator can replace the extrusion disc with different diameters according to different diameters and sizes of hoses, ensuring that the extrusion disc can always press against the outer walls of both ends of the hose, thereby ensuring that both ends of the hose can be fixed in the groove, thus limiting the circumference of the hose pressure part on the outer peripheral wall of the base.

[0012] The present invention further includes a drive motor disposed in the operating cavity, wherein the output end of the drive motor is connected to the disk.

[0013] The advantage of adopting the above technical solution is that the drive motor can drive the disc to rotate, thereby ensuring that the extrusion column can roll on the hose, thus realizing the pumping of liquid in the hose.

[0014] The present invention further comprises: the extrusion column is cylindrical, and an anti-slip sleeve is wrapped around the outer peripheral wall of the extrusion column, the anti-slip sleeve being made of rubber.

[0015] The advantages of adopting the above technical solution are: the anti-slip sleeve can effectively prevent slippage between the extrusion column and the hose, while the rubber material increases the frictional torque between the hose and the extrusion column, thereby ensuring that the extrusion column can properly extrude the hose. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the present invention;

[0017] Figure 2 This is a three-dimensional view of the present invention after the shell has been removed;

[0018] Figure 3 This is an exploded three-dimensional view of the present invention;

[0019] Figure 4 This is a partial three-dimensional view of the shell in this invention. Detailed Implementation

[0020] This invention provides an adjustable peristaltic pump, comprising a housing 1, an operating chamber 11 hollowed out in the housing 1, a base 2 for accommodating an external hose 7 within the operating chamber 11, the base 2 being frustoconical in shape, the outer peripheral wall of the base 2 being a contact surface 21 for the external hose 7 to be wound and fitted, a receiving groove 22 at the bottom of the base 2 for the external hose 7 to pass through and be accommodated after being wrapped around the contact surface 21, a through hole 12 on the outer wall of the housing 1 for communicating with the operating chamber 11 and for the two ends of the external hose 7 to pass through the receiving groove 22, a fixing member on the base 2 for fixing the two ends of the external hose 7 in the receiving groove 22, and a disc 3 disposed within the operating chamber 11, the disc 3 being provided with a plurality of components for squeezing the external hose. The extrusion columns 31 of the hose 7 are located on the outer side of the base 2. An adjusting component is provided on the disc 3 to adjust the position of the extrusion columns 31 on the disc 3. A driving component is provided on the disc 3 to drive the disc 3 to rotate and periodically extrude the hose 7 from the extrusion columns 31. A groove 32 is provided on the disc 3 corresponding to the position of each extrusion column 31. Each groove 32 extends from the edge of the disc 3 towards the center of the disc 3. A slider 311 is provided at the bottom of each extrusion column 31, and each slider 311 is slidably disposed in a corresponding and adjacent groove 32. A movable groove 33 is provided on one side of each groove 32, and each groove 32 is connected to its adjacent movable groove 33. Each of the movable slots 33 has a through slot 34, and a force plate 331 is movably disposed in each of the movable slots 33. The adjusting component includes a buckle plate 341 disposed in each through slot 34. The inner wall of each buckle plate 341 is connected to the outer wall of its adjacent force plate 331, and the outer wall of each buckle plate 341 is engaged with the outer wall of its adjacent slider 311. A driving spring 342 is provided in the movable slot 33 to drive the force plate 331 to slide, thereby causing the buckle plate 341 to slide in the through slot 34 and buckle the buckle plate 341 against the slider 311. An adjusting slot 35 is provided on the disc 3 corresponding to each through slot 34. A push rod 351 for external operation is provided in each adjusting slot 35. Each push rod 351 is connected to its adjacent snap plate 341. The side of the snap plate 341 that contacts the slider 311 is a limiting surface. A first tooth pattern 343 is arranged on the limiting surface along the length of the snap plate 341. A second tooth pattern 312 is arranged on the slider 311. The first tooth pattern 343 and the second tooth pattern 312 are engaged. The fixing member includes a pressing plate 4 and a fixing rod 41. The pressing plate 4 is located at the center of the receiving groove 22 and its axis is aligned with the axis of the disc 3. The outer peripheral wall of the pressing plate 4 is a fixing surface for pressing the outer walls of both ends of the external hose 7. A first opening 42 is penetrating through the center of the pressing plate 4. A second opening 43 is provided on the housing 1 corresponding to the position of the first opening 42.The extrusion disc 4 is detachably connected to the housing 1 via a fixing rod 41. The two ends of the fixing rod 41 are threadedly connected to the first opening 42 and the second opening 43, respectively. The driving component includes a drive motor 5 disposed in the operating cavity 11. The output end of the drive motor 5 is connected to the disc 3. The extrusion column 31 is cylindrical, and an anti-slip sleeve made of rubber is wrapped around its outer peripheral wall.

[0021] In the above technology, the external hose is marked as 7 in the accompanying drawings, and its two ends are marked as 71.

[0022] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. An adjustable peristaltic pump, characterized in that: The device includes a housing with a hollow operating cavity. A base, shaped like a frustum, is provided within the operating cavity for housing an external flexible hose. The outer periphery of the base serves as a contact surface for the external flexible hose to be wound and fitted. A groove is provided at the bottom of the base for the two ends of the external flexible hose to pass through and be accommodated after it has been wound around the contact surface. A through hole is provided on the outer wall of the housing for communicating with the operating cavity and for the two ends of the external flexible hose to pass through the groove. A fixing member is provided on the base for fixing the two ends of the external flexible hose in the groove. A disc is provided within the operating cavity, and several extrusion columns for compressing the external flexible hose are provided on the disc. All extrusion columns are located outside the base. An adjusting member is provided on the disc for adjusting the position of the extrusion columns. A driving member is provided on the disc for driving the disc to rotate and causing the extrusion columns to periodically compress the external flexible hose. A sliding groove is provided on the disc corresponding to each extrusion column position. Each groove extends from the edge of a disc toward its center. Each extrusion column has a slider at its bottom, and each slider slides in a corresponding and adjacent groove. Each groove has a movable slot on one side, and each groove is connected to its adjacent movable slot by a through-slot. A force-bearing plate is movably mounted in each movable slot. The adjusting component includes a buckle plate in each through-slot. The inner wall of each buckle plate is connected to the outer wall of its adjacent force-bearing plate, and the outer wall of each buckle plate abuts against the outer wall of its adjacent slider. A driving spring is provided in the movable slot to drive the force-bearing plate to slide in the through-slot and abut against the slider. An adjusting groove is provided on the disc corresponding to each through-slot position. Each adjusting groove contains a push rod for external operation, and each push rod is connected to its adjacent buckle plate.

2. An adjustable peristaltic pump according to claim 1, characterized in that: The side of the buckle plate that contacts the slider is a limiting surface. A first tooth pattern is arranged on the limiting surface along the length of the buckle plate, and a second tooth pattern is arranged on the slider. The first tooth pattern and the second tooth pattern are engaged.

3. An adjustable peristaltic pump according to claim 1, characterized in that: The fixing component includes a pressing disc and a fixing rod. The pressing disc is located at the center of the receiving groove and its axis is aligned with the axis of the circular disc. The outer peripheral wall of the pressing disc is a fixing surface for pressing the outer walls of both ends of the external hose. A first opening is provided through the center of the pressing disc. A second opening is provided on the housing corresponding to the position of the first opening. The pressing disc is detachably connected to the housing by the fixing rod. The two ends of the fixing rod are threaded to the first opening and the second opening, respectively.

4. An adjustable peristaltic pump according to claim 1, characterized in that: The driving component includes a drive motor disposed in the operating cavity, and the output end of the drive motor is connected to the disk.

5. An adjustable peristaltic pump according to claim 1, characterized in that: The extrusion column is cylindrical, and an anti-slip sleeve made of rubber is wrapped around its outer peripheral wall.

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