阅读说明：本技术 一种蠕动泵 (Peristaltic pump ) 是由 沈光国 李凌 辜嘉 于 2020-12-25 设计创作，主要内容包括：本发明适用于医疗器械领域,公开了蠕动泵,包括具有泵腔的泵壳、活动设于泵腔内的泵盖、滚轮组件、用于驱动滚轮组件旋转的第一驱动组件和用于驱动泵盖沿蠕动泵的轴向直线运动的第二驱动组件,泵盖设置有压爪,滚轮组件安装在泵腔内,第一驱动组件包括旋转台和用于驱动旋转台旋转的第一驱动件,滚轮组件支撑在旋转台,并随旋转台旋转,且滚轮组件可相对旋转台沿蠕动泵的轴向直线运动,第二驱动组件包括第二驱动件,泵壳、第一驱动件、第二驱动件沿蠕动泵的轴向依次设置,第二驱动件具有伸缩杆,且伸缩杆穿过第一驱动件和旋转台后与滚轮组件和泵盖连接；该蠕动泵安装软管时无需取下泵盖,安装效率高,尤其适用于一次性流体输送管。(The invention is suitable for the field of medical equipment, and discloses a peristaltic pump, which comprises a pump shell with a pump cavity, a pump cover movably arranged in the pump cavity, a roller component, a first driving component for driving the roller component to rotate and a second driving component for driving the pump cover to linearly move along the axial direction of the peristaltic pump, wherein the pump cover is provided with a pressing claw, the roller component is arranged in the pump cavity, the first driving component comprises a rotating table and a first driving piece for driving the rotating table to rotate, the roller component is supported on the rotating table, the pump shell, the first driving piece and the second driving piece are sequentially arranged along the axial direction of the peristaltic pump, the second driving piece is provided with a telescopic rod, and the telescopic rod penetrates through the first driving piece and the rotating platform and then is connected with the roller assembly and the pump cover; the peristaltic pump does not need to take down the pump cover when the hose is installed, has high installation efficiency and is particularly suitable for disposable fluid conveying pipes.)

1. A peristaltic pump is characterized by comprising a pump shell with a pump cavity, a pump cover movably arranged in the pump cavity, a roller component, a first driving component used for driving the roller component to rotate, and a second driving component used for driving the pump cover to linearly move along the axial direction of the peristaltic pump, wherein the pump cover is provided with a pressing claw, the roller component is arranged in the pump cavity, the first driving component comprises a rotating platform and a first driving piece used for driving the rotating platform to rotate, the roller component is supported on the rotating platform and rotates along with the rotating platform, the roller component can linearly move along the axial direction of the peristaltic pump relative to the rotating platform, the second driving component comprises a second driving piece, the pump shell, the first driving piece and the second driving piece are sequentially arranged along the axial direction of the peristaltic pump, and the second driving piece is provided with a telescopic rod, and the telescopic rod penetrates through the first driving piece and the rotating table and then is connected with the roller assembly and the pump cover.

2. The peristaltic pump as claimed in claim 1, wherein the end of the telescopic rod extending out of the second driving member is tapered, the telescopic rod is provided with a slot, the pump cover is provided with a shaft sleeve and an elastic clamping member on the side facing the second driving member, the shaft sleeve is provided with a mounting groove corresponding to the slot, the elastic clamping member is provided with a first connecting pin and a second connecting pin, the telescopic rod is mounted in the shaft sleeve, the first connecting pin passes through the mounting groove and is clamped in the slot, and the second connecting pin abuts against the outer wall of the shaft sleeve.

3. A peristaltic pump as set forth in claim 2, wherein the roller assembly includes a roller bracket and rollers mounted on the roller bracket, the rollers being positioned between the pump housing and the pump cover, the roller bracket being connected to the telescoping rod.

4. A peristaltic pump as claimed in claim 3, wherein the roller assembly further comprises an adjustment assembly for adjusting the radius of gyration of the roller, the adjustment assembly comprising a rocker, a rocker shaft, and a third drive assembly, one end of the rocker being mounted to the rotary table via the rocker shaft, the roller being mounted to the other end of the rocker, the third drive assembly being connected to the rocker and being adapted to adjust the radius of gyration of the roller.

5. A peristaltic pump as claimed in claim 4, wherein the third drive assembly includes a slide track, a sliding sleeve, an elastic member, a spring mount and an adjustment member, the spring mount is fixed on the roller bracket, the sliding sleeve is fixed in the spring mount, one end of the slide track is connected to the rocker through a rotating shaft, the other end of the slide track passes through the sliding sleeve and is in threaded connection with the adjustment member, and the elastic member is mounted on the spring mount and is elastically compressed between the adjustment member and the sliding sleeve.

6. The peristaltic pump as claimed in claim 5, wherein the roller assembly further includes a limiting bracket, the sleeve has a fixing hole formed therethrough, the slide rail has a limiting groove formed therethrough, and the limiting bracket is fixed in the fixing hole through the limiting groove.

7. A peristaltic pump as claimed in claim 3, wherein guide posts are provided on the rotary table, and the roller bracket and the pump cover are slidably connected to the guide posts.

8. A peristaltic pump as claimed in claim 1, wherein the pump housing is mounted on the first drive member, the rotatable platform is located within the pump chamber, the rotatable platform includes a planar portion and a rotating portion connected to the planar portion, the rotating portion is rotatably connected to the pump housing by a bearing, and the first drive member is configured to drive the rotating portion to rotate.

9. A peristaltic pump as claimed in claim 8, wherein the second drive assembly further comprises a coupling socket, the second drive member being mounted in the coupling socket and the first drive member being mounted on the coupling socket.

10. A peristaltic pump as claimed in claim 1, wherein the first drive assembly further comprises a reduction gear set comprising first and second coaxially disposed gears, the output shaft of the first drive member being provided with gear teeth for meshing with the first gear, and the rotatable platform being sleeved with a third gear for meshing with the second gear.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a liftable peristaltic pump.

Background

Peristaltic pumps act like clamps that clamp a fluid-filled hose and slide the fluid forward inside the tube as the clamp slides forward. The peristaltic pump uses the same principle, replacing the clamp with a roller. The elastic conveying hose is alternately squeezed and released, negative pressure is formed in the hose, and liquid flows along with the negative pressure. The peristaltic pump is composed of a pump shell with a circular inner cavity, rollers and a hose, wherein the hose is arranged in the pump shell. The hose is squeezed by the roller to form a closed cut-off point which follows the roller as the roller rotates. The hose will return to its natural state after the roller has been removed and a vacuum will be created in the hose, drawing in the fluid and being squeezed out by the next roller. The peristaltic pump hose is completely closed by the rollers, and the fluid does not flow back, so the peristaltic pump is a positive displacement pump or a positive displacement pump and a volume pump. The peristaltic pump fluid only passes through the peristaltic pump hose, without the valve and seal, and does not contact any other components of the pump. The liquid is extruded in the pump tube in a peristaltic manner, so that the liquid to be conveyed cannot be sheared, and the fluid sensitive to shearing cannot be damaged. Thus, the field of medical devices often uses peristaltic pumps to deliver fluids.

However, the conventional peristaltic pump has the following problems:

first, the hose is pushed down to current peristaltic pump utilizes the pump cover, and the hose installation is inconvenient, and during the installation hose, need take off the pump cover, put into the draw-in groove of pump cover to push down the hose, all the other delivery hoses are connected to the both ends of peristaltic pump hose through the joint, and especially medical instrument field fluid delivery pipe mostly needs disposable, changes the hose at every turn and all need pull down the pump cover.

Second, the radius of gyration of the rollers of the prior art peristaltic pumps is fixed and is difficult to adapt to hoses of different diameters.

Disclosure of Invention

The invention aims to provide a peristaltic pump, and aims to solve the technical problem that a pump cover is required to be taken down when a hose is installed in the conventional peristaltic pump, so that the peristaltic pump is inconvenient to install.

In order to achieve the purpose, the invention provides the following scheme:

a peristaltic pump comprises a pump shell with a pump cavity, a pump cover movably arranged in the pump cavity, a roller component, a first driving component for driving the roller component to rotate, and a second driving component for driving the pump cover to linearly move along the axial direction of the peristaltic pump, the pump cover is provided with a pressing claw, the roller assembly is arranged in the pump cavity, the first driving assembly comprises a rotating table and a first driving piece for driving the rotating table to rotate, the roller assembly is supported on the rotating table, and rotates along with the rotating table, and the roller component can move linearly along the axial direction of the peristaltic pump relative to the rotating table, the second driving component comprises a second driving piece, the pump shell, the first driving piece and the second driving piece are sequentially arranged along the axial direction of the peristaltic pump, the second driving piece is provided with a telescopic rod, and the telescopic rod penetrates through the first driving piece and the rotating table and then is connected with the roller assembly and the pump cover.

As an improved mode, one end of the telescopic rod, extending out of the second driving piece, is set to be a taper shape, a clamping groove is formed in the telescopic rod, a shaft sleeve and an elastic clamping piece are arranged on one side, facing the second driving assembly, of the pump cover, a mounting groove corresponding to the clamping groove is formed in the shaft sleeve, the elastic clamping piece is provided with a first connecting pin and a second connecting pin, the telescopic rod is mounted in the shaft sleeve, the first connecting pin penetrates through the mounting groove and is clamped in the clamping groove, and the second connecting pin abuts against the outer wall of the shaft sleeve.

As an improvement mode, the roller assembly comprises a roller support and a roller arranged on the roller support, the roller is located between the pump shell and the pump cover, and the roller support is connected with the telescopic rod.

As an improvement mode, the roller assembly further comprises an adjusting assembly used for adjusting the turning radius of the roller, the adjusting assembly comprises a rocker, a rocker rotating shaft and a third driving assembly, one end of the rocker is installed on the rotating platform through the rocker rotating shaft, the roller is installed at the other end of the rocker, and the third driving assembly is connected with the rocker and used for adjusting the turning radius of the roller.

As an improvement mode, the third driving assembly comprises a sliding rail, a sliding sleeve, an elastic part, a spring mounting seat and an adjusting part, the spring mounting seat is fixed on the roller wheel support, the sliding sleeve is fixed in the spring mounting seat, one end of the sliding rail is connected with the rocker through a rotating shaft, the other end of the sliding rail penetrates through the sliding sleeve and is in threaded connection with the adjusting part, the elastic part is installed on the spring mounting seat, and the adjusting part and the sliding sleeve are elastically compressed.

As an improved mode, the roller assembly further comprises a limiting support, a fixing hole is formed in the shaft sleeve in a transverse penetrating mode, a limiting groove is formed in the sliding rail in a transverse penetrating mode, and the limiting support penetrates through the limiting groove and is fixed in the fixing hole.

As an improvement mode, a guide pillar is arranged on the rotary table, and the roller support and the pump cover are both in sliding connection with the guide pillar.

As an improvement, the pump case is installed on the first driving piece, the revolving stage is located the pump intracavity, the revolving stage include plane portion and with the rotation portion that plane portion connects, rotation portion pass through the bearing with the pump case rotates and is connected, and first driving piece is used for the drive rotation portion rotates.

As an improvement, the second driving assembly further comprises a connecting seat, the second driving member is mounted in the connecting seat, and the first driving member is mounted on the connecting seat.

As an improvement, first drive assembly still includes reduction gear set, reduction gear set includes first gear and the second gear of coaxial setting, the output shaft of first driving piece be provided with the teeth of a cogwheel of first gear engagement, the cover is equipped with the third gear with second gear engagement on the revolving stage.

The peristaltic pump of the embodiment provided by the invention has the following advantages:

firstly, the pump cover and the roller component of the peristaltic pump can move along the axial direction of the peristaltic pump relative to the pump shell, when the hose is installed or replaced, the second driving component is used for driving the pump cover and the roller component to move upwards, the hose can be installed after an upper pipe space is reserved, after the hose is installed, the second driving component is started to drive the pump cover and the roller component to reset, the hose can be compressed, the hose is prevented from moving up and down, the pump cover does not need to be taken down when the hose is installed, the installation efficiency is high, and the peristaltic pump is particularly suitable for disposable fluid conveying pipes.

Secondly, the peristaltic pump is ingenious in design and compact in overall structure, the pump shell, the first driving piece and the second driving piece are sequentially arranged along the axial direction of the peristaltic pump, the telescopic rod of the second driving piece penetrates through the second driving piece and the rotating table and then is connected with the roller assembly and the pump cover, and the first driving assembly and the second driving assembly can work independently without being arranged at two ends of the pump shell and without mutual influence.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of a peristaltic pump with a hose attached thereto according to an embodiment of the present invention;

FIG. 2 is a top view of a peristaltic pump provided by an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of B in FIG. 3;

FIG. 5 is a partial block diagram of a peristaltic pump provided in accordance with an embodiment of the present invention;

FIG. 6 is a schematic diagram of a pump cap according to an embodiment of the present invention;

FIG. 7 is a schematic view of a combination of a roller and adjustment assembly provided by an embodiment of the present invention;

fig. 8 is a schematic view of a combination of an adjusting mechanism and a limiting bracket according to an embodiment of the present invention.

The reference numbers illustrate:

1. a peristaltic pump;

10. a pump housing; 11. a pump chamber;

20. a pump cover; 21. pressing claws; 22. a shaft sleeve; 221. mounting grooves; 222. a fixing hole; 23. an elastic clamping piece; 231. a first connecting pin; 232. a second connecting pin;

30. a roller assembly; 31. a roller bracket; 32. a roller; 33. an adjustment assembly; 331. a rocker; 332. a rocker shaft; 333. an adjustment mechanism; 3331. a slide rail; 3332. a sliding sleeve; 3333. an elastic member; 3334. a spring mount; 3335. an adjustment member; 3336. a limiting groove; 34. a limiting bracket;

40. a first drive assembly; 41. a rotating table; 411. a planar portion; 412. a rotating part; 4121. a third gear; 413. a guide post; 42. a first driving member; 421. gear teeth; 43. a reduction gear set; 431. a first gear; 432. a second gear;

50. a second drive assembly; 51. a second driving member; 52. a telescopic rod; 53. a connecting seat;

2. a hose.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 8, which are peristaltic pumps 1 according to an embodiment of the present invention. Referring to fig. 1, the axial direction of the peristaltic pump 1 described herein is the up-down direction, and the Z direction is the up-down direction, and the lateral direction of the peristaltic pump 1 is the left direction, and the X direction is the up-down direction.

Referring to fig. 1 to 8, a peristaltic pump 1 according to an embodiment of the present invention includes a pump housing 10 having a pump cavity 11, a pump cover 20 movably disposed in the pump cavity 11, a roller assembly 30, a first driving assembly 40 for driving the roller assembly 30 to rotate, and a second driving assembly 50 for driving the pump cover 20 to linearly move along an axial direction of the peristaltic pump 1, the pump cover 20 is provided with a pressing claw 21, the pressing claw 21 is used for limiting axial movement of a flexible tube 2 along the peristaltic pump 1 (i.e., for preventing the flexible tube 2 from moving up and down), the roller assembly 30 is mounted in the pump cavity 11 and is used for pressing the flexible tube 2 between the roller 32 and the pump housing 10, the first driving assembly 40 includes a rotating table 41 and a first driving member 42 for driving the rotating table 41 to rotate, the roller assembly 30 is supported on the rotating table 41 and rotates with the rotating table 41, and the roller assembly 30 can linearly move along the axial, the second driving assembly 50 includes a second driving member 51, the pump case 10, the first driving member 42, and the second driving member 51 are sequentially disposed along the axial direction of the peristaltic pump 1, the second driving member 51 has an expansion link 52, and the expansion link 52 passes through the second driving member 51 and the rotating table 41 and then is connected to the roller assembly 30 and the pump cover 20, in an initial state, the first driving assembly 40 and the second driving assembly 50 are both in a closed state, when the hose 2 needs to be installed, the second driving member 51 is started, the expansion link 52 of the second driving member 51 extends out and drives the roller assembly 30 and the pump cover 20 to move upward until the roller assembly 30 and the pump cover 20 leave the pump chamber 11 for a certain distance (the distance is enough to complete the tube feeding action), the second driving member 51 is closed, the hose 2 is installed, after the installation is completed, the second driving member 51 is restarted, the expansion link 52 of the second driving member 51 retracts and drives the, at this moment, one side of the hose 2 is in contact with the inner wall of the pump shell 10, one side of the hose is extruded by the roller 32, and the pressing claw 21 presses the upper side of the hose 2, so that the hose 2 can be installed without taking down the pump cover 20 of the peristaltic pump 1 in the embodiment, and the installation is convenient.

The peristaltic pump 1 of the present embodiment has the following advantages:

first, the pump cover 20 and the roller wheel assembly 30 of the peristaltic pump 1 of this embodiment can be moved along the axial of the peristaltic pump 1 relative to the pump case 10, when the hose 2 is installed or replaced, the pump cover 20 and the roller wheel assembly 30 are driven by the second driving assembly 50 to move upwards, the hose 2 can be installed by reserving an upper pipe space, after the hose 2 is installed, the second driving assembly 50 is started again to drive the pump cover 20 and the roller wheel assembly 30 to reset, the hose 2 can be compressed, the hose 2 is prevented from moving up and down, the pump cover 20 does not need to be taken down when the hose 2 is installed, the installation efficiency is high, and the peristaltic pump is particularly suitable for disposable fluid conveying pipes.

Secondly, the peristaltic pump 1 of this embodiment is ingenious in design, and overall structure is compacter, and pump case 10, first driving piece 42, second driving piece 51 set gradually along the axial of peristaltic pump 1, and the telescopic link 52 of second driving piece 51 is connected with wheel components 30 and pump cover 20 after passing second driving piece 51 and revolving stage 41, and first drive assembly 40 and second drive assembly 50 need not to divide the both ends of locating pump case 10, also can work independently each other, do not influence each other.

Alternatively, the roller assemblies 30 may be arranged in one, two, or more than three groups, in this embodiment, two groups of roller assemblies 30 are arranged, and two groups of roller assemblies 30 are stacked and arranged on two sides of the pump cover 20.

Alternatively, two pressing claws 21 are provided, and the two pressing claws 21 are respectively located on both sides of one group of the roller assemblies 30.

Alternatively, the first driving member 42 is a motor, an output shaft of the motor is a hollow shaft, and the second driving member 51 is a cylinder.

Referring to fig. 1 to 6, one end of the telescopic rod 52 extending out of the second driving member 51 is tapered, a locking groove is formed in the telescopic rod 52, a shaft sleeve 22 and an elastic locking member 23 are disposed on one side of the pump cover 20 facing the second driving member 50, the shaft sleeve 22 is provided with a mounting groove 221 corresponding to the locking groove, the elastic locking member has a first connecting pin 231 and a second connecting pin 232, the telescopic rod 52 is mounted in the shaft sleeve 22, the first connecting pin 231 passes through the mounting groove 221 and is locked in the locking groove, and the second connecting pin 232 abuts against the outer wall of the shaft sleeve 22. During the initial state, first connecting pin 231 is located the mounting groove 221 of axle sleeve 22, when telescopic link 52 and pump cover 20 assemble, stretch into the axle sleeve 22 with telescopic link 52, telescopic link 52 extrudes first connecting pin 231 and continues to go deep into in axle sleeve 22, first connecting pin 231 is crowded mounting groove 221 department, move as for mounting groove 221 department until the draw-in groove of telescopic link 52, first connecting pin 231 is under the elastic force effect, the joint is in the draw-in groove, and like this, pump cover 20 just can closely assemble with telescopic link 52, reciprocate along with telescopic link 52, and the fixed mode is reliable.

Alternatively, the elastic snap 23 is a torsion spring.

Referring to fig. 1 to 8, the roller assembly 30 includes a roller bracket 31, a roller 32 mounted on the roller bracket 31, and an adjusting assembly 33 for adjusting a turning radius of the roller 32, the roller bracket 31 is sleeved on the shaft sleeve 22 and is tightly fitted with the shaft sleeve 22, and when the second driving member 51 drives the pump cover 20 to move up and down, the roller bracket 31 moves up and down along with the shaft sleeve 22.

The adjusting assembly 33 comprises a rocker 331, a rocker rotating shaft 332 and an adjusting mechanism 333, one end of the rocker 331 is mounted on the rotating platform 41 through the rocker rotating shaft 332, the roller 32 is mounted at the other end of the rocker 331, and the adjusting mechanism 333 is rotatably connected with the rocker 331 and is used for adjusting the radius of gyration of the roller 32, so that the distance between the roller 32 and the pump shell 10 can be adjusted to adapt to hoses 2 with different diameters, and the adjusting mode is simple and reliable.

Further, the adjusting mechanism 333 includes a slide rail 3331, a sliding sleeve 3332, an elastic member 3333, a spring mounting seat 3334 and an adjusting member 3335, the spring mounting seat 3334 is fixed on the roller bracket 31, the sliding sleeve 3332 is fixed in the spring mounting seat 3334, one end of the sliding rail 3331 is connected to the rocker 331 through a rotating shaft, the other end of the sliding rail 3331 is connected to the adjusting member 3335 through the sliding sleeve 3332 and is screwed with the adjusting member 3335 through the sliding sleeve 3332, the elastic member 3333 is installed on the spring mounting seat 3334 and is elastically compressed between the adjusting member 3335 and the sliding sleeve 3332, the relative position between the rocker 331 and the pump housing 10 is adjusted by adjusting the compression of the elastic member 3333 by adjusting the relative position relationship between the adjusting member 3335 and the sliding rail 3331, and the roller 32 is disposed on the rocker 331, so that the relative position between the rocker 331 and. In order to increase the turning radius of the roller 32 to adapt to the hose 2 with a larger diameter, the compression amount of the elastic member 3333 can be increased, and during adjustment, the sliding rail 3331 slides in a direction away from the spring mounting seat 3334, so that the relative distance between the adjusting member 3335 and the sliding rail 3331 is increased, accordingly, along with the sliding of the sliding rail 3331, the rocking bar 331 makes a clockwise turning motion, and drives the roller 32 to make a clockwise turning motion, thereby increasing the distance between the roller 32 and the pump housing 10. In order to reduce the turning radius of the roller 32 to adapt to the hose 2 with a smaller diameter, the compression amount of the elastic member 3333 can be reduced, during adjustment, the sliding rail 3331 slides towards the direction close to the spring mounting seat 3334, so that the relative distance between the adjusting member 3335 and the sliding rail 3331 is reduced, accordingly, along with the sliding of the sliding rail 3331, the rocker 331 makes a turning motion counterclockwise to drive the roller 32 to make a turning motion counterclockwise, thereby reducing the distance between the roller 32 and the pump housing 10, and facilitating the operation.

Alternatively, the adjustment is a set screw and the resilient member 3333 is a spring.

Furthermore, the roller assembly 30 further includes a limit bracket 34, the shaft sleeve 22 is transversely formed with a fixing hole 222, the sliding rail 3331 is transversely formed with a limit groove 3336, the limit bracket 34 passes through the limit groove 3336 and is fixed in the fixing hole 222, and the telescopic rod 52 passes through the limit bracket 34 and is connected with the shaft sleeve 22. The sliding stroke of the sliding rail 3331 is limited by the limiting support 34, the turning radius of the roller 32 can be better adjusted, the limiting support 34 is fixed in the mounting hole of the shaft sleeve 22, and the fixing mode is simple and reliable along with the linear motion of the shaft sleeve 22.

In this embodiment, the two sets of roller assemblies 30 are symmetrically disposed in the transverse direction of the peristaltic pump 1, and only one limiting bracket 34 may be disposed, that is, the limiting bracket 34 is installed in the fixing hole 222, one end of the limiting bracket passes through the limiting groove 341 of the first set of roller assemblies 30, and the other end of the limiting bracket passes through the limiting groove 341 of the second set, and simultaneously limits the movement stroke of the two sets of sliding rails 3331.

Referring to fig. 1 and 5, the rotary table 41 is provided with two guide posts 413, the roller bracket 31 and the pump cover 20 are both slidably connected to the guide posts 413, the first guide post 413 is slidably connected to the roller bracket 31, the second guide post 413 is sequentially slidably connected to the roller bracket 31 and the pump cover 20, and the second guide post 413 is supported above the adjusting mechanism 333 by an auxiliary member, so that the design is ingenious, and the overall structure of the peristaltic pump 1 is more compact.

It is understood that the number of the guide posts 413 is not limited to one, and one or three or more guide posts may be provided.

Referring to fig. 1-3, the pump housing 10 is mounted on the first driving member 42, the rotating platform 41 is located in the pump chamber 11, the rotating platform 41 includes a planar portion 411 and a rotating portion 412 connected to the planar portion 411, the rotating portion 412 is rotatably connected to the pump housing 10 through a bearing, the connecting manner is reliable, and the rotating portion 412 drives the planar portion 411 to rotate under the driving of the first driving member 42.

Specifically, the pump housing 10 is screwed to the first drive assembly 40.

Referring to fig. 1 to 5, the first driving assembly 40 further includes a reduction gear set 43, the reduction gear set 43 includes a first gear 431 and a second gear 432 coaxially disposed, an output shaft of the first driving member 42 is provided with a gear tooth 421 engaged with the first gear 431, and the rotating portion 412 is sleeved with a third gear 4121 engaged with the second gear 432, so that the reduction gear set 43 is disposed to reduce the rotation speed and increase the torque, thereby making the operation of the roller assembly 30 more stable.

Specifically, the first gear 431, the second gear 432, and the third gear 4121 are all straight-toothed gears.

Referring to fig. 1-3, the second driving assembly 50 further includes a connecting seat 53, the second driving member 51 is installed in the connecting seat 53, the first driving member 42 is installed on the connecting seat 53, and the first driving assembly 40 and the second driving assembly 50 are integrated, so that the overall structure of the peristaltic pump 1 is more compact.

Specifically, the first driving member 42 is screwed to the connection seat 53.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.