Multichannel micro-adjustment peristaltic pump head

Abstract

The utility model discloses a multichannel micro-adjustment peristaltic pump head, which relates to the technical field of peristaltic pumps and comprises a pump shell, a pumping cavity is arranged on the front side face of the pump shell, a through hole is arranged on the rear side face of the pump shell, two sides of the pumping cavity are respectively communicated with two end faces of the pump shell through a hose inlet and a hose outlet, and the pump shell is provided with a through hole. A plurality of pressing plates and a rolling wheel assembly are arranged in the pumping cavity in an up-down mode, the two ends of each pressing plate are adjacent to the hose inlet and the hose outlet respectively, and the top face of each pressing plate is connected with the top face of the pump shell through a lifting adjusting assembly. A central shaft on the roller assembly penetrates through the through hole and is rotationally connected with the through hole, and a hose mounting channel is formed in a gap between the roller assembly and the pressing plate. The multi-channel micro-adjustment peristaltic pump head adopting the structure can ensure the accuracy when different raw materials with the same dosage are added.

Description

TECHNICAL FIELD

[0001] The utility model relates to peristaltic pump technical field especially is concerned with a kind of multi-channel trace adjustment peristaltic pump pump head. BACKGROUND

[0002] Peristaltic pump is a kind of volumetric pump, mainly including driver, pump head and hose, the output shaft on driver drives the rotation of roller assembly on pump head, and roller assembly cyclically extrudes hose to realize the pumping of liquid. Peristaltic pump is usually used in flow measuring instrument, medical equipment, chemical industry and other fields, in actual production, the situation of needing to transport different raw materials simultaneously is often encountered. Although multiple peristaltic pumps can realize the above-mentioned function, when needing to transport different raw materials of same dosage simultaneously, multiple peristaltic pumps cannot guarantee accuracy. Although there is pump head capable of simultaneously installing multiple hoses in prior art, because there is certain difference in wall thickness of hose, liquid delivery amount between multiple hoses on pump head also has certain gap, which affects the accuracy when adding different raw materials of same dosage.

[0003] To solve the above-mentioned problem, it is necessary to provide a peristaltic pump pump head with multiple channels and capable of trace adjustment. SUMMARY

[0004] The utility model aims at providing a kind of multi-channel trace adjustment peristaltic pump pump head, which can guarantee the accuracy when adding different raw materials of same dosage.

[0005] To achieve the above-mentioned purpose, the utility model provides a kind of multi-channel trace adjustment peristaltic pump pump head, including pump shell, the front side of pump shell is equipped with pumping cavity, the rear side of pump shell is equipped with through-hole, the two sides of pumping cavity are connected with the two end surfaces of pump shell through hose inlet and hose outlet respectively, the upper and lower pressure plate and roller assembly are equipped in pumping cavity, the pressure plate is equipped with multiple, the two ends of pressure plate are adjacent to the hose inlet and the hose outlet respectively, the top surface of each pressure plate is connected with the top surface of pump shell through lifting adjustment assembly, the center shaft on roller assembly penetrates through the through-hole and is rotationally connected with the through-hole, and the gap between roller assembly and pressure plate forms hose installation channel.

[0006] Preferably, the lifting adjusting assembly comprises a threaded rod and a guide rod, the threaded rod is connected with a threaded hole on the top surface of the pump shell, the top end of the threaded rod is fixedly connected with a knob, the bottom end of the threaded rod is rotatably connected with the pressing plate, a rotating block and a limiting ring are sleeved on the threaded rod, the limiting ring is fixedly connected with the threaded rod, the rotating block is rotatably connected with the threaded rod, the top surface and the bottom surface of the rotating block are respectively in contact with the limiting ring and the pressing plate, the guide rod is symmetrically arranged on both sides of the threaded rod, and the bottom end of the guide rod is fixedly connected with the pressing plate, and a reinforcing rod is fixedly connected between the bottom of the guide rod and the rotating block.

[0007] Preferably, the bottom surface of each pressing plate is provided with a guide groove for mounting a hose.

[0008] Preferably, the roller assembly comprises the central shaft and a roller group fixed on the central shaft, the roller groups are arranged one by one directly below the pressing plates, each roller group comprises connecting rods uniformly distributed along the circumference of the central shaft, the ends of the connecting rods are connected with rotating wheels through rotating shafts, and the rotating shafts are perpendicular to the hose mounting channels.

[0009] Preferably, a viewing window is detachably connected to the front side of the pump shell, and the viewing window is arranged corresponding to the pumping cavity.

[0010] Preferably, the pump shell comprises a base and an upper cover which are detachably connected, the hose outlet, the hose inlet and the lifting adjusting assembly are located on the upper cover, and the through hole is located on the base.

[0011] Therefore, the multi-channel micro-adjustment peristaltic pump head has the following beneficial effects:

[0012] 1. The roller assembly and the plurality of pressing plates form a plurality of hose mounting channels, so that a plurality of hoses can be mounted on the pump head, thereby realizing simultaneous conveying of different raw materials.

[0013] 2. Each pressing plate is connected with a lifting adjusting mechanism, the lifting adjusting mechanism can lift the pressing plate to adjust the distance between the pressing plate and the roller assembly, thereby realizing micro-adjustment of the conveying amount of the hose and overcoming the problem of inconsistent conveying amount between the hoses due to the difference in the wall thickness of the hoses.

[0014] 3. The reinforcing rod in the lifting adjusting assembly can increase the stability of the pressing plate, thereby avoiding the deformation of the pressing plate when the two ends of the pressing plate are in contact with the roller assembly.

[0015] The technical scheme of the utility model will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 Figure 1 is a structural schematic diagram of an embodiment of the multi-channel micro-adjustment peristaltic pump head of the present application;

[0017] Fig. 2 Figure 2 is a structural schematic diagram of an embodiment of the lifting adjustment assembly in the multi-channel micro-adjustment peristaltic pump head of the present application.

[0018] REFERENCE NUMERALS

[0019] 1, pump shell; 101, base; 102, upper cover; 2, pumping cavity; 3, hose inlet; 4, hose outlet; 5, pressing plate; 6, roller assembly; 61, central shaft; 62, roller set; 621, connecting rod; 622, rotating wheel; 7, lifting adjustment assembly; 71, threaded rod; 72, guide rod; 73, knob; 74, rotating block; 75, limiting ring; 76, reinforcing rod; 8, guide groove; 9, observation window. DETAILED DESCRIPTION

[0020] The technical solution of the present application is further described below through the drawings and embodiments.

[0021] EMBODIMENT

[0022] As shown in the drawings, Figs. 1-2 a multi-channel micro-adjustment peristaltic pump head, comprising a pump shell 1, the front side of the pump shell 1 is provided with a pumping cavity 2, and the rear side of the pump shell 1 is provided with a through hole. The two sides of the pumping cavity 2 are respectively connected to the two end faces of the pump shell 1 through a hose inlet 3 and a hose outlet 4, and the pumping cavity 2 is provided with a pressing plate 5 and a roller assembly 6 arranged vertically. The central shaft 61 on the roller assembly 6 penetrates the through hole and is rotationally connected with the through hole, and the through hole facilitates the connection of the central shaft 61 with the output shaft on the driver. The pressing plate 5 is provided with a plurality of pressing plates 5, and the two ends of the pressing plate 5 are respectively arranged adjacent to the hose inlet 3 and the hose outlet 4. The top surface of each pressing plate 5 is connected to the top surface of the pump shell 1 through a lifting adjustment assembly 7, and the gap between the roller assembly 6 and the pressing plate 5 forms a hose installation channel.

[0023] In use, the same number of hoses as the pressing plates 5 are prepared, and then the hoses are installed in the hose installation channel, and the two ends of the hoses are respectively fixed in the hose inlet 3 and the hose outlet 4. At this time, the roller assembly 6 is started to realize the simultaneous pumping of different liquids. The lifting adjustment assembly 7 can drive the pressing plate 5 to lift, thereby adjusting the extrusion degree of the pressing plate 5 and the roller assembly 6 on the hose, overcoming the problem of inconsistent conveying capacity between the hoses due to the existence of certain differences in the wall thickness of the hoses.

[0024] Further preferably, the lifting adjusting assembly 7 comprises a threaded rod 71 and a guide rod 72, the threaded rod 71 is connected with the threaded hole on the top surface of the pump shell 1. The top end of the threaded rod 71 is fixedly connected with the knob 73, and the bottom end of the threaded rod 71 is rotatably connected with the pressing plate 5. The threaded rod 71 is sleeved with a rotating block 74 and a limiting ring 75, the limiting ring 75 is fixedly connected with the threaded rod 71, and the rotating block 74 is rotatably connected with the threaded rod 71. The top surface and the bottom surface of the rotating block 74 are in contact with the limiting ring 75 and the pressing plate 5 respectively. The guide rod 72 is symmetrically arranged on both sides of the threaded rod 71, and the bottom end of the guide rod 72 is fixedly connected with the pressing plate 5. The bottom of the guide rod 72 and the rotating block 74 are fixedly connected with a reinforcing rod 76.

[0025] In use, rotating the knob 73 drives the threaded rod 71 to rotate, so that the threaded rod 71 realizes lifting in the threaded hole. The guide rod 72 can realize the guiding effect of the pressing plate 5 during lifting. The combined action of the threaded rod 71 and the guide rod 72 can realize the lifting of the pressing plate 5 in the vertical direction, thereby adjusting the extrusion degree of the pressing plate 5 and the roller assembly 6 on the hose. When the roller assembly 6 contacts the end of the pressing plate 5, causing the end of the pressing plate 5 to have a tendency to deform upward, the reinforcing rod 76 can support the pressing plate 5 to prevent the pressing plate 5 from deforming.

[0026] Further preferably, the bottom surface of each pressing plate 5 is provided with a guide groove 8 for installing the hose, which facilitates the installation of the hose.

[0027] Further preferably, the roller assembly 6 comprises a central shaft 61 and a roller set 62 fixed on the central shaft 61, and the roller set 62 is arranged one by one below the pressing plate 5. Each roller set 62 comprises a connecting rod 621 uniformly distributed along the circumference of the central shaft 61, and the end of the connecting rod 621 is connected with a rotating wheel 622 through a rotating shaft, which is perpendicular to the hose installation channel. The rotating wheel 622 can reduce the friction between the roller assembly 6 and the hose when they contact, thereby ensuring the service life of the hose.

[0028] Further preferably, the front side of the pump shell 1 is detachably connected with an observation window 9, and the observation window 9 is arranged corresponding to the pumping cavity 2. The observation window 9 facilitates the user to timely understand the running state of each part in the pumping cavity 2.

[0029] Further preferably, the pump shell 1 comprises a base 101 and an upper cover 102 which are detachably connected, the hose outlet 4, the hose inlet 3 and the lifting adjusting assembly 7 are located on the upper cover 102, and the through hole is located on the base 101. The detachable connection of the upper cover 102 and the base 101 facilitates the disassembly of the upper cover 102, thereby facilitating the maintenance of the pressing plate 5, the lifting adjusting assembly 7 and the roller set 62, and also facilitating the installation of the hose.

[0030] Therefore, the multi-channel micro-adjustment peristaltic pump head with the above structure can ensure the accuracy when adding the same dose of different raw materials.

[0031] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model and not to limit them, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: its still can modify or equivalent replacement to the technical solutions of the utility model, and these modifications or equivalent replacements also cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the utility model.

Claims

1. A multi-channel micro-regulatory peristaltic pump head, characterized by: The utility model provides a pump, including pump shell (1), the front side of pump shell (1) is equipped with pumping cavity (2), the rear side of pump shell (1) is equipped with through -hole, the two sides of pumping cavity (2) are connected with the two end surfaces of pump shell (1) through hose inlet (3) and hose outlet (4) respectively, be equipped with the pressure plate (5) and the roller assembly (6) of upper and lower settings in pumping cavity (2), the pressure plate (5) is equipped with multiple, the both ends of pressure plate (5) are adjacent with hose inlet (3) and hose outlet (4) setting respectively, the top surface of each pressure plate (5) is connected with the top surface of pump shell (1) through lifting adjustment component (7), the central shaft (61) on roller assembly (6) penetrates through through -hole and is rotatably connected with through -hole, and the gap between roller assembly (6) and pressure plate (5) forms hose installation channel.

2. A multi-channel micro-adjustable peristaltic pump head according to claim 1, wherein: The lifting adjustment component (7) includes a threaded rod (71) and a guide rod (72), the threaded rod (71) is connected with the threaded hole on the top surface of the pump shell (1), the top end of the threaded rod (71) extends out of the threaded hole and is fixedly connected with a knob (73), the bottom end of the threaded rod (71) is rotatably connected with the pressure plate (5), a rotating block (74) and a limiting ring (75) are sleeved on the threaded rod (71), the limiting ring (75) is fixedly connected with the threaded rod (71), the rotating block (74) is rotatably connected with the threaded rod (71), the top surface and the bottom surface of the rotating block (74) are in contact with the limiting ring (75) and the pressure plate (5) respectively, the guide rod (72) is symmetrically arranged on both sides of the threaded rod (71), and the bottom end of the guide rod (72) is fixedly connected with the pressure plate (5), a reinforcing rod (76) is fixedly connected between the bottom of the guide rod (72) and the rotating block (74).

3. A multi-channel micro-adjustable peristaltic pump head according to claim 1, wherein: The bottom surface of each pressure plate (5) is provided with a guide groove (8) for installing a hose.

4. A multi-channel micro-adjustable peristaltic pump head as defined in claim 1, wherein: The roller assembly (6) includes the central shaft (61) and a roller group (62) fixed on the central shaft (61), the roller group (62) is arranged one by one below the pressure plate (5), each roller group (62) includes a connecting rod (621) uniformly distributed along the circumference of the central shaft (61), the end of the connecting rod (621) is connected with a rotating wheel (622) through a rotating shaft, and the rotating shaft is perpendicular to the hose installation channel.

5. A multi-channel micro-adjustable peristaltic pump head as defined in claim 1, wherein: The front side of the pump shell (1) is detachably connected with an observation window (9), and the observation window (9) is arranged corresponding to the pumping cavity (2).

6. A multi-channel micro-adjustable peristaltic pump head as defined in claim 1, wherein: The pump shell (1) includes a base (101) and an upper cover (102) detachably connected, the hose outlet (4), the hose inlet (3) and the lifting adjustment component (7) are located on the upper cover (102), and the through -hole is located on the base (101).

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