CN220769683U

CN220769683U - Peristaltic pump head

Info

Publication number: CN220769683U
Application number: CN202322291949.9U
Authority: CN
Inventors: 邓民尚; 文传涛; 白耀荣
Original assignee: Guangzhou Jiezhen Medical Technology Co ltd
Current assignee: Guangzhou Jiezhen Medical Technology Co ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2024-04-12
Anticipated expiration: 2033-08-24

Abstract

The utility model relates to the technical field of peristaltic pumps, and discloses a peristaltic pump head which comprises a base, a clamping block, a pump wheel assembly, a clamping block, a driving mechanism, a sliding block and a sliding rail, wherein the clamping block is arranged on the base; the clamping block, the pump wheel assembly and the clamping block are sequentially arranged on the base from front to back, the sliding rail is arranged on the base and extends from front to back, the sliding block is arranged on the sliding rail, and the power output end of the driving mechanism is fixedly connected with the sliding block or the sliding rail so as to drive the sliding block to do back-and-forth reciprocating motion on the sliding rail; the clamping block or the pump wheel assembly is fixedly connected with the sliding block and is in sliding connection with the base through the sliding block, so that the clamping block and the pump wheel assembly can move relatively. The utility model can ensure that the gap between the peristaltic pump head and the pump pipe is consistent every time, and can improve the operation precision of the peristaltic pump.

Description

Peristaltic pump head

Technical Field

The utility model relates to the technical field of peristaltic pumps, in particular to an electric-driven clamping peristaltic pump head.

Background

The existing peristaltic pump head is simple in structure, most of peristaltic pump heads need to be closed manually, the internal eccentric wheel is rotated by rotating the peristaltic pump head handle, the movable block is driven to clamp the pump pipe, the hose squeezing function is achieved, and the mechanical device for conveying fluid is completed.

At present, when a pump pipe is replaced, a movable block on the pump head needs to be moved, because the step of moving the movable block is manual operation, the clamping gap between the movable block and the clamping seat easily generates errors of different degrees when the pump pipe is clamped, and after the pump pipe is reinstalled each time, the basic parameters of the peristaltic pump can be changed in a small extent: such as flow, fluid pressure, etc., have small deviations that affect the precision of peristaltic pump control.

In addition, in the existing peristaltic pump, most movable blocks drive to slide when relying on the rotation of an internal eccentric wheel, pump pipe clamping is carried out by relying on the friction between the eccentric wheel and the frame of the eccentric wheel and the dead point state of a crank rocker of the eccentric wheel, or the movable blocks of the rotary peristaltic pump are buckled with fixed buckles, and the mechanical mechanism is used for buckling, so that after long service time, part parts are tired and worn, the clamping gap is increased, the clamping force of a peristaltic pump head on the pump pipe is influenced, and finally the control precision of the peristaltic pump is influenced.

Disclosure of Invention

The purpose of the utility model is that: a peristaltic pump head capable of improving operation accuracy of a peristaltic pump is designed.

In order to achieve the above purpose, the utility model provides a peristaltic pump head, which comprises a base, a clamping block, a pump wheel assembly, a clamping block, a driving mechanism, a sliding block and a sliding rail; the clamping block, the pump wheel assembly and the clamping block are sequentially arranged on the base from front to back, the sliding rail is arranged on the base and extends from front to back, the sliding block is arranged on the sliding rail, and the power output end of the driving mechanism is fixedly connected with the sliding block or the sliding rail so as to drive the sliding block to do back-and-forth reciprocating motion on the sliding rail; the clamping block or the pump wheel assembly is fixedly connected with the sliding block and is in sliding connection with the base through the sliding block, so that the clamping block and the pump wheel assembly can move relatively.

Further, the device also comprises a displacement sensor, wherein the displacement sensor is arranged on the base and used for measuring the displacement distance of the sliding block, and the driving mechanism is in communication connection with the displacement sensor.

Further, the driving mechanism is an electric push rod, and the electric push rod is fixedly connected with the sliding block.

Further, a screw rod is arranged on the sliding rail, the sliding block is connected with the sliding rail through the screw rod, and the driving mechanism is in transmission connection with the screw rod.

Further, the clamping block is fixedly connected with the base, and the pump wheel assembly is fixedly connected with the sliding block and is in sliding connection with the base through the sliding block.

Further, the pump wheel assembly comprises a pump wheel body and a pump wheel motor, the base comprises a side plate extending along the front-rear direction, the side plate is provided with a first side and a second side in the left-right direction respectively, the clamping blocks are sequentially arranged on the first side of the side plate from front to back, through holes are formed in the side plate, and the pump wheel motor is located on the second side of the side plate and is in transmission connection with the pump wheel body through the through holes.

Further, the pump wheel body is fixedly connected with the sliding block so that the pump wheel body and the clamping block can move relatively, and the pump wheel motor is connected with the pump wheel body through a Schmidt coupling.

Further, the through hole is a long hole extending along the front-back direction, and the pump wheel motor is fixedly connected with the sliding block, so that the pump wheel motor drives the pump wheel body and the clamping block to move relatively.

Further, the base also comprises a bottom plate, the bottom plate is fixedly connected to the second side of the side plate, the driving mechanism and the sliding rail are both arranged on the bottom plate, a motor support is arranged on the sliding block, and the pump wheel motor is fixedly connected with the sliding block through the motor support.

Further, the clamping block is provided with a pipe inlet through groove and a pipe outlet through groove, and a pressure sensor is arranged at the pipe outlet through groove.

Compared with the prior art, the peristaltic pump head has the beneficial effects that:

according to the peristaltic pump head, the peristaltic pump pipe is clamped by the peristaltic pump head clamped by the driving mechanism, and the peristaltic pump head is combined with the positioning device for use, so that the clamping gap between the pump wheel assembly and the clamping block on the peristaltic pump head is ensured to be consistent with the last time when the peristaltic pump pipe is reinstalled each time, the gap error caused by manual operation clamping is eliminated, and the peristaltic pump parameters such as flow, fluid pressure and the like after the pump pipe is replaced are ensured to be consistent with the last running state.

Drawings

Fig. 1 is an isometric view of a peristaltic pump head of an embodiment of the present utility model.

FIG. 2 is an isometric view of FIG. 2 of a peristaltic pump head according to an embodiment of the present utility model;

FIG. 3 is an isometric view of FIG. 3 of a peristaltic pump head according to an embodiment of the present utility model;

FIG. 4 is an isometric view of a peristaltic pump head without a pump body according to an embodiment of the present utility model;

fig. 5 is a signal flow diagram of an embodiment of the utility model for electrically driven clamping.

In the figure, 1, a base; 11. a side plate; 111. a first side; 112. a second side; 113. a through hole; 12. a bottom plate; 2. a clamping block; 3. a pump wheel assembly; 31. a pump wheel body; 32. a pump wheel motor; 4. the clamping speed is high; 41. feeding a pipe through groove; 42. a pipe outlet through groove; 5. a driving mechanism; 51. an electric push rod; 6. a slide block; 61. a motor bracket; 7. a slide rail; 8. a displacement sensor; 9. a pressure sensor.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the present utility model are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "connected," "fixed," and the like are used in the present utility model in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; the mechanical connection can be realized, and the welding connection can be realized; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1, 2 and 3, a peristaltic pump head according to a preferred embodiment of the present utility model includes a base 1, a clamping block 2, a pump wheel assembly 3, a clamping block, a driving mechanism 5, a sliding block 6 and a sliding rail 7; the clamping block 2, the pump wheel assembly 3 and the clamping block are sequentially arranged on the base 1 from front to back, the sliding rail 7 is arranged on the base 1 and extends from front to back, the sliding block 6 is arranged on the sliding rail 7, and the power output end of the driving mechanism 5 is fixedly connected with the sliding block 6 or the sliding rail 7 so as to drive the sliding block 6 to do back-and-forth reciprocating motion on the sliding rail 7; the clamping block 2 or the pump impeller assembly 3 is fixedly connected with the sliding block 6 and is in sliding connection with the base 1 through the sliding block 6, so that the clamping block 2 and the pump impeller assembly 3 can move relatively.

Specifically, the driving mechanism 5 may be an electric push rod 51 directly connected with the sliding block 6, and the sliding block 6 is pushed and pulled to move back and forth along the sliding rail 7; or the slide rail 7 is provided with a screw rod, and the driving mechanism 5 is connected with the screw rod to enable the slide block 6 to move back and forth along the slide rail 7 by controlling the screw rod to rotate.

The sliding block 6 can be fixedly connected with the pump wheel assembly 3 so as to drive the pump wheel assembly 3 to move back and forth relative to the clamping block 2, so that the clamping gap of the peristaltic pump is consistent with the last time when the peristaltic pump tube is reinstalled each time to the greatest extent, gap errors caused by manual operation clamping are eliminated, and peristaltic pump parameters such as flow, fluid pressure and the like after the pump tube is replaced are consistent with the last running state. In addition, when the slide block 6 can be fixedly connected with the clamping block 2, the driving mechanism 5 drives the clamping block 2 to move back and forth relative to the pump wheel assembly 3 through the slide block 6 to clamp the pump pipe, and the advantages can be achieved, and the operating part is simple in structure and wide in practicability. The application can improve the working efficiency.

In some improvements of the present application, the device further comprises a displacement sensor 8, the displacement sensor 8 is disposed on the base 1 and is used for measuring the displacement distance of the sliding block 6, and the driving mechanism 5 is in communication connection with the displacement sensor 8. In other modifications of the present application, the displacement sensor 8 may be a position detection sensor for detecting whether the pump wheel assembly 3 or the grip block 2 is moved to the corresponding position, in addition to detecting the movement stroke.

In some modifications of the present application, the driving mechanism 5 is an electric push rod 51, and the electric push rod 51 is fixedly connected with the slider 6. The principle of the peristaltic pump head for realizing electric driving clamping is shown in fig. 5, specifically: the electric signal triggers the driving of the electric push rod 51, the sliding block 6 is pushed to drive the pump wheel assembly 3 or the clamping block 2 to move in the front-back direction, the clamping position is confirmed in advance, the corresponding travel of the peristaltic pump wheel assembly 3 or the clamping block 2 is read through the displacement sensor 8, the triggering of the electric signal is stopped, the electric push rod 51 is closed, the pump wheel component or the clamping block 2 is stopped at the position confirmed in advance, and the clamping force of the peristaltic pump head is kept through the mechanical locking characteristic of the electric push rod 51.

In other improvements of the present application, the movement can be realized by using a screw slider 6 instead of an electric push rod and a conventional slide rail 7 slider 6, specifically, a screw with the same extending direction as the slide rail 7 is arranged on the slide rail 7, the slider 6 is connected with the slide rail 7 through the screw, and the driving mechanism 5 is in transmission connection with the screw. The screw rod slide rail 7 is used, the slide block 6 is arranged on the driving mechanism 5, the screw rod driving motor is connected with the screw rod, the screw rod can be controlled to rotate so as to drive the slide block 6 to move, the advancing distance of the slide block 6 is accurately calculated through the rotating number of turns of the motor, the screw rod is kept static through the characteristic of power-on self-locking of the motor, the slide block 6 is fixedly acted, and the peristaltic pump is ensured to be fixedly connected with the pump wheel assembly 3 or the clamping block 2 when in operation, so that the pump pipe can be clamped by the clamping force.

In some improvements of the present application, the clamping block 2 is fixedly connected with the base 1, and the pump wheel assembly 3 is fixedly connected with the sliding block 6 and is slidably connected with the base 1 through the sliding block 6.

In some improvements of the present application, the pump wheel assembly 3 includes a pump wheel body 31 and a pump wheel motor 32, the base 1 includes a side plate 11 extending along a front-rear direction, the side plate 11 has a first side 111 and a second side 112 in a left-right direction respectively, the clamping block 2, the pump wheel body 31 and the clamping block are sequentially disposed on the first side 111 of the side plate 11 from front to back, a through hole 113 is formed in the side plate 11, and the pump wheel motor 32 is located on the second side 112 of the side plate 11 and is in transmission connection with the pump wheel body 31 through the through hole 113.

In some improvements of the present application, the pump wheel body 31 is fixedly connected with the sliding block 6 so as to enable the pump wheel body 31 to move relatively with the clamping block 2, and the pump wheel motor 32 is connected with the pump wheel body 31 through a schmidt coupling. Schmitt coupling can achieve a variable parallel offset between the two shafts that is suitable for wide variations in radial displacement when operating under load. The pump wheel body 31 is separated from the pump wheel motor 32 by using a Schmitt coupling, the motor can be fixed, the pump wheel is independently driven to move in the front-rear direction by using the electric push rod 51 through the sliding block 6, and the pump pipe is clamped by matching with the clamping block 2 through the mechanical locking characteristic of the electric push rod 51.

As shown in fig. 4, in some modifications of the present application, the through hole 113 is a long hole extending in the front-rear direction, and the pump motor 32 is fixedly connected to the slider 6, so that the pump motor 32 drives the pump body 31 and the clamping block 2 to move relatively. Specifically, the sliding block 6 is designed as a sliding table, the pump wheel motor 32 and the pump wheel body 31 are fixed on the sliding block 6, the pump wheel motor 32 on the sliding block is pushed by the driving electric push rod 51, the pump wheel body 31 is enabled to move in the front-back direction, and the pump pipe is clamped by matching with the clamping block 2 through the characteristic of the machine lock of the electric push rod 51.

When the electric push rod 51 is driven, the moving position of the sliding block 6 can be identified through the displacement sensor 8, the stroke of the motor is controlled through the automatic control system, the same stroke of each driving of the electric push rod is ensured, the same gap between the peristaltic pump impeller body 31 and the clamping block 2 after the pump tube is disassembled and replaced is kept, and the precise control of the peristaltic pump on the flow and the fluid pressure is ensured.

In some improvements of the present application, the base 1 further includes a bottom plate 12, the bottom plate 12 is fixedly connected to the second side 112 of the side plate 11, the driving mechanism 5 and the sliding rail 7 are both disposed on the bottom plate 12, the sliding block 6 is provided with a motor support 61, and the pump wheel motor 32 is fixedly connected with the sliding block 6 through the motor support 61.

In some improvements of the present application, the clamping block is provided with a pipe inlet through groove 41 and a pipe outlet through groove 42, and the pipe outlet through groove 42 is provided with a pressure sensor 9. The pressure sensor 9 is used to detect that the fluid pressure through the pump tube is ensured to be consistent before and after replacement of the pump tube.

In summary, the embodiment of the utility model provides a peristaltic pump head, which clamps peristaltic pump pipes by using a peristaltic pump head clamped by a driving mechanism 5, and is combined with a positioning device for use, so that the clamping gap between a pump wheel assembly 3 and a clamping block 2 on the peristaltic pump head is ensured to be consistent with the last time when the peristaltic pump pipes are reinstalled each time to the greatest extent, the gap error caused by manual operation clamping is eliminated, and the peristaltic pump parameters such as flow, fluid pressure and the like after the pump pipes are replaced are ensured to be consistent with the last running state. The utility model has simple integral operation structure and wide practicability, and can improve the working efficiency.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims

1. The peristaltic pump head is characterized by comprising a base, a clamping block, a pump wheel assembly, a clamping block, a driving mechanism, a sliding block and a sliding rail; the clamping block, the pump wheel assembly and the clamping block are sequentially arranged on the base from front to back, the sliding rail is arranged on the base and extends from front to back, the sliding block is arranged on the sliding rail, and the power output end of the driving mechanism is fixedly connected with the sliding block or the sliding rail so as to drive the sliding block to do back-and-forth reciprocating motion on the sliding rail; the clamping block or the pump wheel assembly is fixedly connected with the sliding block and is in sliding connection with the base through the sliding block, so that the clamping block and the pump wheel assembly can move relatively;

the clamping block is fixedly connected with the base, and the pump wheel assembly is fixedly connected with the sliding block and is in sliding connection with the base through the sliding block;

the pump impeller assembly comprises a pump impeller body and a pump impeller motor, the base comprises a side plate extending along the front-rear direction, the side plate is provided with a first side and a second side in the left-right direction respectively, the clamping blocks are sequentially arranged on the first side of the side plate from front to back, through holes are formed in the side plate, and the pump impeller motor is located on the second side of the side plate and is in transmission connection with the pump impeller body through the through holes.

2. A peristaltic pump head as claimed in claim 1, wherein: the sliding block is characterized by further comprising a displacement sensor, wherein the displacement sensor is arranged on the base and used for measuring the displacement distance of the sliding block, and the driving mechanism is in communication connection with the displacement sensor.

3. A peristaltic pump head as claimed in claim 2, wherein: the driving mechanism is an electric push rod which is fixedly connected with the sliding block.

4. A peristaltic pump head as claimed in claim 1, wherein: the sliding rail is provided with a screw rod, the sliding block is connected with the sliding rail through the screw rod, and the driving mechanism is in transmission connection with the screw rod.

5. A peristaltic pump head as claimed in claim 1, wherein: the pump impeller body is fixedly connected with the sliding block so that the pump impeller body and the clamping block relatively move, and the pump impeller motor is connected with the pump impeller body through a Schmidt coupling.

6. A peristaltic pump head as claimed in claim 1, wherein: the through hole is a long hole extending along the front-back direction, and the pump wheel motor is fixedly connected with the sliding block, so that the pump wheel motor drives the pump wheel body and the clamping block to move relatively.

7. The peristaltic pump head of claim 6, wherein the base further comprises a bottom plate fixedly connected to the second side of the side plate, the driving mechanism and the sliding rail are both disposed on the bottom plate, a motor bracket is disposed on the sliding block, and the pump motor is fixedly connected with the sliding block through the motor bracket.

8. Peristaltic pump head as claimed in any one of claims 1 to 7, wherein the clamping block is provided with an inlet tube through slot and an outlet tube through slot, and the outlet tube through slot is provided with a pressure sensor.