CN220125350U

CN220125350U - Peristaltic pump

Info

Publication number: CN220125350U
Application number: CN202320882293.5U
Authority: CN
Inventors: 乔印云; 刘欢; 王子强; 冯启涛; 巩郑; 李帅康; 徐国阳; 陈凯
Original assignee: Anhui Tongling Bionic Technology Co Ltd
Current assignee: Anhui Tongling Bionic Technology Co Ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-12-05
Anticipated expiration: 2033-04-19

Abstract

The utility model discloses a peristaltic pump, which relates to the technical field of medical equipment, and in particular relates to a peristaltic pump, comprising a shell, an eccentric wheel assembly, a pressing plate and a hose positioned between the eccentric wheel assembly and the pressing plate, wherein the eccentric wheel assembly is arranged in the shell through a mounting seat; firstly, the connection between the parts is more compact and unified, the design requirement on the shell is lower, secondly, through forming the connecting column into the keels, each component is assembled in sequence along the connecting column, the modular assembly of the device is realized, the convenience and the efficiency of the assembly are effectively ensured, and the cost performance is high.

Description

Peristaltic pump

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a peristaltic pump.

Background

Peristaltic pump is a device in a ventricular assist system that includes a driver, a pump head, and a hose, and typically includes a control system, an irrigation system, a pumping system, and the like, wherein the irrigation system is configured to drive the flow of irrigation fluid within the hose through the peristaltic pump, thereby causing the output irrigation fluid to constantly flush and lubricate the pumping motor in the pumping system, to provide a suitable pressure to prevent blood in the body from entering the pumping motor.

Patent number CN202220912158.6 is entitled an eccentric wheel assembly, a flushing device and a ventricular assist system, and particularly as shown in fig. 2, wherein the flushing system is the eccentric wheel assembly described in the patent, and the eccentric wheel assembly is driven to rotate around the axis of the wheel shaft by driving the wheel shaft, so that the eccentric wheel mounted on the wheel shaft rotates centrifugally, and a peristaltic slide plate sleeved on the eccentric wheel is driven to do eccentric motion along the radial direction of the wheel shaft, so that the intermittent hose squeezing function is achieved, and flushing fluid in the hose is squeezed section by section and the continuous forward flowing effect is generated; meanwhile, in order to protect the hose and ensure the pumping effect of the hose, a pressing plate is further arranged above the hose. In this scheme, on the one hand, each part is all fixed in the shell of integral type directly to all rely on each baffle that is located the shell and the mounting hole of prearranging on the baffle to realize the assembly effect, assembly efficiency and precision depend on the shell completely and depend on, and the design parameter requirement to the shell is higher, and this kind of integral type assembly structure also has certain inconvenience during the equipment. On the other hand, for the pressing plate, the work is realized completely by the spring; also, when assembling, the plurality of groups of springs are mounted one by one, the assembly efficiency is reduced, certain requirements are also put forward on the assembly precision of each spring, and problems such as non-compact mounting and the like are easy to generate; at the same time, the spring itself also requires a certain installation space, which in any case increases the radial dimensions of the device. In addition, for the power source for driving the eccentric wheel to rotate, the scheme shown in fig. 2 is assembled in an independent cavity in the shell through the bevel gear assembly, and the problem of occupying a large axial space also exists, so that the overall structure is slightly loose. Obviously, it is difficult to meet the existing requirements of some customers for a smaller and smaller structure only by the installation mode of the spring and the power source.

Disclosure of Invention

In order to avoid and overcome the technical problems in the prior art, the utility model provides a peristaltic pump. The utility model has the advantages of compact structure and convenient disassembly and assembly, can realize the rapid disassembly and assembly requirement of each component in the shell through the modularized design of the internal multiple modules, and effectively ensures the convenience and efficiency of disassembly and assembly and has high cost performance.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the peristaltic pump comprises a shell, an eccentric wheel assembly, a pressing plate and a hose arranged between the eccentric wheel assembly and the pressing plate, wherein the eccentric wheel assembly is arranged in the shell through a mounting seat, the peristaltic pump further comprises a connecting column arranged in an inner cavity of the shell, and the connecting column sequentially penetrates through the pressing plate and the mounting seat from bottom to top along the radial direction of the eccentric wheel assembly and then is assembled on the shell.

As a further scheme of the utility model: the two ends of the pressing plate are provided with sliding blocks, and the sliding blocks are coaxially sleeved on the corresponding connecting columns in a sliding manner; the connecting column is also coaxially sleeved with a pressure spring, and the pressure spring provides elasticity to drive the pressure plate to compress the hose.

As still further aspects of the utility model: the top of the connecting column is coaxially provided with a mounting column for forming a nut, the appearance of the mounting column is in a two-section stepped shaft shape with a thick upper part and a thin lower part, through holes with hole shoulders are coaxially arranged at the sliding blocks, the compression springs are coaxially sleeved at the small-diameter sections of the mounting column, the top of each compression spring extends upwards and abuts against the shaft shoulders of the mounting column, and the bottom of each compression spring extends downwards and abuts against the hole shoulders.

As still further aspects of the utility model: the shell is internally fixedly connected with a mounting seat, a mounting hole with a hole core in the vertical direction is formed in the mounting seat, a copper nut is embedded in the mounting hole, and threads at the bottom end of the connecting column are matched with the copper nut.

As still further aspects of the utility model: the peristaltic pump further comprises a transition block, the transition block is coaxially sleeved on the connecting column, the transition block is located between the mounting seat and the sliding block, guide blind holes are concavely formed in the transition block, the mounting seat and the shell, guide protrusions are uniformly distributed on the sliding block, the transition block and the mounting seat, and sliding guide type coaxial plug-in matching is formed between the guide blind holes and the guide protrusions along the axial direction of the connecting column.

As still further aspects of the utility model: the shaft end of the eccentric wheel assembly is rotatably matched with the mounting seat; the motor is positioned at the side part of the eccentric wheel assembly and is meshed with the shaft end of the eccentric wheel assembly by virtue of a gear train positioned at the outer end of the mounting seat.

As still further aspects of the utility model: a transition shaft is rotatably matched on the mounting seat, and a pinion is arranged at the position of the transition shaft at the outer end of the mounting seat so as to form meshed fit with a large gear at the shaft end, so that a gear train for reducing speed is formed between the pinion and the large gear; the transition shaft is arranged at the inner end of the mounting seat and is provided with a cylindrical gear with axial teeth, and the cylindrical gear is meshed with an output shaft of the motor through each spur gear.

As still further aspects of the utility model: the shell comprises a box body with an inner cavity and a cover axially assembled at a box opening of the box body along the connecting column, wherein the cover is connected with the shell through a buckle, and the inner wall of the cover is abutted to the top end of the mounting column.

As still further aspects of the utility model: the connecting columns are provided with roots which correspond to the four corner positions of the shell respectively.

Compared with the prior art, the utility model has the beneficial effects that:

1. the device is provided with the connecting column, so that the eccentric wheel assembly and the pressing plate are installed along the axial direction through the connecting column; compared with the installation mode that all parts are arranged in different cavities in the prior art, the connection among the parts is compact and uniform, the design requirement on the shell is lower, and the practical production and manufacturing are facilitated. Secondly, through forming the spliced pole fossil fragments, each component all assembles along the spliced pole in proper order, has realized the modularization equipment effect of device, has effectively ensured the convenience and the efficiency nature of equipment, sexual valence relative altitude.

2. The mode of buffering is carried out through carrying out clamp plate elastic connection on the spliced pole and is replaced clamp plate direct spring connection's connected mode on the casing, can have the limiting effect to the travel path of clamp plate at first, avoids the clamp plate to lead to unnecessary upset and skew because of deformation, finally leads to the damage of clamp plate or the unable problem of effective buffering, and secondly can also make clamp plate and eccentric wheel subassembly be connected inseparabler for the part in the casing forms unification whole, connects compactly.

3. Through with spliced pole detachable setting in the casing to and the spliced pole top also adopts threaded connection to carry out axial spacing's erection column, make the inside part of casing form unified connection for the casing, but still can dismantle respectively and change, improve the replacement rate of inside part and the holistic utilization ratio of peristaltic pump.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a front elevation cut-away view of the prior art of the present utility model.

Fig. 3 is a schematic perspective view of the connection of the eccentric wheel assembly and the connecting column in the present utility model.

FIG. 4 is a schematic view of the connection structure of the eccentric wheel assembly, the transition block and the connecting column in the present utility model.

Fig. 5 is a schematic perspective view of the inside of the cap according to the present utility model.

In the figure: 1. a housing; 2. a cover; 5. a wheel train; 10. a connecting column; 11. an eccentric wheel assembly; 111. a copper nut; 112. a transition block; 113. a mounting base; 114. a wheel axle; 12. a mounting column; 120. a pressure spring; 13. a pressing plate; 130. a slide block; 14. a hose; 115. peristaltic skateboard; 116. an eccentric wheel.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 5, in the embodiment of the present utility model, a peristaltic pump includes a housing 1, an eccentric wheel assembly 11 installed in the housing 1, a pressing plate 13, and a hose 14 located between the eccentric wheel assembly 11 and the pressing plate 13, wherein a motor is installed on the housing 1, an output end of the motor penetrates through the housing 1 to be in transmission engagement with an input end of a gear train 5, the gear train 5 is in transmission engagement by starting the motor, a transition shaft is rotatably fitted on a mounting seat 113, and a pinion is disposed at a position of the transition shaft at an outer end of the mounting seat 113, so that a gear train 5 for reducing speed is formed between the pinion and the pinion; the transition shaft is provided with a cylindrical gear with axial teeth at the inner end of the mounting seat 113, the cylindrical gear is meshed to the output shaft of the motor through each spur gear, the output end of the gear train 5 is in transmission connection with the input end of the eccentric wheel assembly 11 to provide a power source for the eccentric wheel assembly 11, and the gear train 5 is distributed in a surrounding manner along the outer side of the eccentric wheel assembly 11, so compared with the staggered arrangement of bevel gear trains in the prior art, the distribution among components is tighter and more compact, and the problems of high noise and vibration caused by component dispersion are reduced;

the eccentric wheel assembly 11 comprises an axle 114 connected to the mounting seat 113 through a shaft sleeve, a plurality of eccentric wheels 116 are sequentially mounted on the axle 114 along the axial direction, peristaltic slide plates 115 are sleeved on each eccentric wheel 116, the peristaltic slide plates 115 are attached to the surface of the hose 14, and the axle 114 driving the output end of the wheel train 5 is driven to rotate, so that the hose 14 can be extruded when the peristaltic slide plates 115 sleeved on the eccentric wheels 116 perform a rotary motion, and peristaltic transfusion motion is generated;

the inner bottom of the shell 1 is fixedly connected with the mounting seat 113, the copper nuts 111 are embedded in the mounting seat 113, the copper nuts 111 are connected with the connecting column 10 through threads, 4 connecting columns 10 are respectively arranged corresponding to four corner positions of the shell 1, therefore, even if the connecting column 10 is worn after long-term use, the connecting column 10 can be twisted to separate the connecting column 10 connected through threads from the copper nuts 111, the damaged connecting column 10 is replaced, the connecting column 10 sequentially penetrates through the mounting seat 113 from bottom to top, the transition block 112 between the mounting seat 113 and the sliding block 130, the transition block 112, the mounting seat 113 and the shell 1 are respectively provided with a guide blind hole in a concave manner, the sliding block 130, the transition block 112 and the mounting seat 113 are respectively provided with a guide protrusion, a sliding guide type coaxial plug-in fit is formed between the guide blind holes and the guide protrusions along the axial direction of the connecting column 10, the top end of the connecting column 10 is provided with the mounting column 12, the mounting column 12 and the connecting column 10 are combined to form a screw matching structure so as to limit the axial direction of a part mounted on the connecting column 10, the shell 1 is connected with the sealed cover 2 through a buckle, when the cover 2 is covered, the inner wall of the cover 2 is abutted against the top end of the mounting column 12, the mounting column 12 is sleeved in a sliding block 130 correspondingly arranged at two ends of the pressing plate 13, the connecting column 10 is sleeved with a spring 120, the spring 120 is a pressure spring, a shaft shoulder is arranged at the mounting column 12, a through hole with a hole shoulder is arranged at the corresponding position of the sliding block 130, two ends of the pressure spring are fixedly connected on the shaft shoulder and the hole shoulder respectively, so that the pressing plate 13 moves back and forth along the axial direction of the connecting column 10, the connecting mode that the pressing plate 13 is directly connected with the shell 1 through the spring is replaced by elastically connecting the pressing plate 13 on the connecting column 10, the moving path of the pressing plate 13 can be limited, unnecessary overturning and shifting caused by deformation of the pressing plate 13 can be avoided, eventually leading to damage to the platen 13 or an ineffective cushioning problem.

The working principle of the utility model is as follows: according to the utility model, the connecting column 10 is arranged, so that the eccentric wheel assembly 11 and the pressing plate 13 sleeved on the connecting column 10 form a connecting whole relative to the shell 1, therefore, in the process, compared with the split cavity arrangement in the prior art, the connecting structure is compact, noise and vibration are small, when the connecting column is maintained and disassembled, the connecting column 10 can be maintained by twisting the mounting column 12 in threaded connection, the pressing plate 13 can move upwards along the connecting column 10, the eccentric wheel assembly 11 is prevented from being maintained, the interference between parts is avoided when the connecting column 10 is maintained, the parts and the inside of the shell 1 are interfered, the operation of personnel is facilitated, the connecting column 10 can be worn after long-term use, and the damaged connecting column 10 can be replaced by twisting the connecting column 10 through the separation of the connecting column 10 and the copper nut 111 in threaded connection.

The basic principles of the present utility model have been described above in connection with specific embodiments, however, it should be noted that the advantages, benefits, effects, etc. mentioned in the present utility model are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be considered as essential to the various embodiments of the present utility model. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the utility model is not necessarily limited to practice with the above described specific details.

The block diagrams of the devices, apparatuses, devices, systems referred to in the present utility model are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.

It is also noted that in the apparatus, devices and methods of the present utility model, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present utility model.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the utility model. Thus, the present utility model is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the utility model to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof.

Claims

1. Peristaltic pump, including casing (1), eccentric wheel subassembly (11), clamp plate (13) and be located hose (14) between eccentric wheel subassembly (11) and clamp plate (13), its characterized in that, eccentric wheel subassembly (11) are installed in casing (1) through mount pad (113), and this peristaltic pump is still including being located spliced pole (10) in casing (1) inner chamber, spliced pole (10) are followed radial by supreme clamp plate (13) and mount pad (113) that run through in proper order down of eccentric wheel subassembly (11) and are assembled on casing (1).

2. Peristaltic pump according to claim 1, characterized in that the two ends of the pressure plate (13) are provided with sliding blocks (130), the sliding blocks (130) being coaxially and slidingly sleeved on the corresponding connecting columns (10); the connecting column (10) is also coaxially sleeved with a pressure spring (120), and the pressure spring (120) provides elasticity to drive the pressing plate (13) to press the hose (14).

3. Peristaltic pump according to claim 2, characterized in that the top end of the connecting column (10) is coaxially provided with a mounting column (12) forming a nut, the mounting column (12) is in a two-section stepped shaft shape with a thick upper part and a thin lower part, through holes with hole shoulders are coaxially arranged at the sliding block (130), the compression spring (120) is coaxially sleeved at the small diameter section of the mounting column (12), the top end of the compression spring (120) extends upwards and abuts against the shaft shoulder of the mounting column (12), and the bottom end of the compression spring (120) extends downwards and abuts against the hole shoulders.

4. A peristaltic pump according to claim 3, wherein the housing (1) is internally and fixedly connected with a mounting seat (113), a mounting hole with a hole core in the vertical direction is formed in the mounting seat (113), a copper nut (111) is embedded in the mounting hole, and the bottom end of the connecting column (10) is in threaded fit with the copper nut (111).

5. The peristaltic pump of claim 4 further comprising a transition block (112), wherein the transition block (112) is coaxially sleeved on the connecting column (10), the transition block (112) is positioned between the mounting seat (113) and the sliding block (130), guide blind holes are concavely formed in the upper parts of the transition block (112), the mounting seat (113) and the shell (1), guide protrusions are respectively arranged on the sliding block (130), the transition block (112) and the mounting seat (113), and sliding guide type coaxial plug-in fit is formed between the guide blind holes and the guide protrusions along the axial direction of the connecting column (10).

6. A peristaltic pump according to claim 1 or 2 or 3 or 4 or 5, characterized in that the shaft end of the eccentric assembly (11) is rotationally fitted on the mounting seat (113); the motor is located at the side of the eccentric wheel assembly (11) and engages the shaft end of the eccentric wheel assembly (11) by means of a gear train (5) located at the outer end of the mounting seat (113).

7. Peristaltic pump according to claim 6, characterized in that said mounting (113) is fitted with a transition shaft in rotation, said transition shaft being provided with a pinion in a position at the outer end of the mounting (113) so as to form a meshing engagement with a gearwheel at said shaft end, so as to form said train (5) for deceleration between pinion and gearwheel; the transition shaft is positioned at the inner end of the mounting seat (113) and is provided with a cylindrical gear with axial teeth, and the cylindrical gear is meshed with the output shaft of the motor through each spur gear.

8. Peristaltic pump according to claim 3, 4 or 5, characterized in that the housing (1) comprises a box with an inner cavity and a cover (2) axially fitted at the mouth of the box along the connecting column (10), the cover (2) and the housing (1) are connected by means of a snap, and the inner wall of the cover (2) abuts against the top end of the mounting column (12).

9. Peristaltic pump according to claim 6, characterized in that the connecting columns (10) are provided in total in 4 numbers, corresponding respectively to the four corner positions of the casing (1).