A multi-channel peristaltic pump capable of automatically releasing pressure

Abstract

The invention discloses a multi-channel peristaltic pump capable of automatic pressure relief, comprising a bracket, a steering motor, a roller-pressed body, a cover plate and a cover-opening and closing mechanism are arranged on the bracket, the roller-pressed body is columnar, a plurality of circumferentially distributed axial protrusions are arranged on the cylindrical surface of the roller-pressed body, the two ends of the roller-pressed body are respectively rotatably matched with the bracket, and the steering motor can drive the roller-pressed body to rotate; the cover plate is located below the roller-pressed body and one end is hinged to the bracket, a transverse arc groove and a plurality of longitudinal grooves for placing a hose are arranged on the top surface of the cover plate, and each longitudinal groove intersects with the bottom of the transverse arc groove; the cover-opening and closing mechanism comprises a cover-opening motor, a screw rod, a slider, a slide rail and a connecting rod, the screw rod is fixedly connected to the output shaft of the cover-opening motor, the slider is threadedly connected to the screw rod and slidably matched with the slide rail, one end of the connecting rod is rotatably connected to the top end of the slider, and the other end is rotatably connected to the cover plate. The invention realizes automatic pressure relief of the hose and is easy to use.

Description

Technical Field

[0001] The invention relates to the technical field of peristaltic pumps, and in particular to a multi-channel peristaltic pump capable of automatically relieving pressure. Background Art

[0002] Peristaltic pump is a liquid material conveying power device. Because it can avoid direct contact with liquid materials, it is widely used in medical, environmental protection and chemical industries. Its main structure is roller, pressing plate and hose. Its operation process is as follows: when the pressing plate presses the hose tightly against the roller, the disc composed of multiple rollers continuously squeezes to generate negative pressure, so that the liquid material is continuously conveyed out.

[0003] However, the following problems may occur when using a peristaltic pump: (1) The peristaltic pump hose loses its elasticity and cannot be used after repeated use due to long-term extrusion and deformation; (2) To extend the service life of the hose, the conventional operation is to manually loosen the card to restore the hose to its natural state; (3) For field automated instruments and online unattended working conditions, the hose cannot be loosened, which greatly reduces the hose life and requires frequent hose replacement. Summary of the invention

[0004] The object of the present invention is to provide a multi-channel peristaltic pump capable of automatic pressure relief, so as to solve the problems existing in the above-mentioned prior art and realize automatic pressure relief of the hose for convenient use.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a multi-channel peristaltic pump capable of automatically relieving pressure, comprising a bracket, on which a steering motor, a roller-pressed body, a cover plate and an opening and closing cover mechanism are arranged, the roller-pressed body is columnar, a plurality of circumferentially distributed axial protrusions are arranged on the cylindrical surface of the roller-pressed body, the two ends of the roller-pressed body are respectively rotatably matched with the bracket, and the steering motor can drive the roller-pressed body to rotate; the cover plate is located below the roller-pressed body and one end is hinged to the bracket, a transverse arc groove and a plurality of longitudinal pressing grooves for placing a hose are arranged on the top surface of the cover plate, and each of the longitudinal grooves is connected to the roller-pressed body. The bottoms of the transverse arc-shaped grooves intersect, and when the cover plate is horizontal, the bottom of the rolling body extends into the transverse arc-shaped groove; the opening and closing cover mechanism includes a cover opening motor, a screw rod, a slider, a slide rail and a connecting rod, and the cover opening motor and the slide rail are respectively fixed on the bracket, the screw rod is fixedly connected to the output shaft of the cover opening motor, the slider is threadedly connected to the screw rod and slidably cooperates with the slide rail, one end of the connecting rod is rotatably connected to the top end of the slider, and the other end is rotatably connected to the cover plate, and the rotation connection between the connecting rod and the cover plate is far away from the end where the cover plate is hinged to the bracket.

[0007] Preferably, the rolling body includes a roller, two rolling plates and a plurality of rollers; both ends of the roller are respectively rotatably cooperated with the bracket, the two rolling plates are respectively fixed on the roller, and a plurality of rollers evenly arranged along the circumference of the roller are fixed between the two rolling plates, and the rollers can rotate relative to the rolling plates.

[0008] Preferably, a driving gear is fixedly provided on the output shaft of the steering motor, a driven gear is fixedly provided on one end of the roller, and a transmission belt is wound around the driving gear and the driven gear.

[0009] Preferably, the longitudinal pressing groove is a through groove, one end of the longitudinal pressing groove is provided with a front clamping point, and the other end of the longitudinal pressing groove is provided with a rear clamping point.

[0010] Preferably, a first positioning block is fixedly provided at the bottom end of the cover plate, a second positioning block is fixedly provided at the top end of the slider, a first backrest perpendicular to the bottom surface of the cover plate is provided at one end of the first positioning block, a second backrest perpendicular to the top surface of the slider is provided at one end of the second positioning block, one end of the connecting rod is hinged to the first positioning block, the other end of the connecting rod is hinged to the second positioning block, and the connecting rod is located between the first backrest and the second backrest.

[0011] Preferably, a horizontal positioning plate is fixedly connected to the top of the slider, and the length direction of the positioning plate is perpendicular to the length direction of the slide rail; a cover opening limit switch and a cover closing limit switch are fixedly provided on the bracket, and the positioning plate can trigger the cover opening limit switch and the cover closing limit switch when moving with the slider.

[0012] Compared with the prior art, the present invention has achieved the following technical effects:

[0013] The multi-channel peristaltic pump capable of automatic pressure relief of the present invention realizes automatic pressure relief of the hose and is easy to use. The multi-channel peristaltic pump capable of automatic pressure relief of the present invention realizes automatic pressure relief of the peristaltic pump by opening and closing the cover plate through the cover opening and closing mechanism, and can realize the opening and closing of the cover plate at 0° to 90°; in the present invention, the cover plate is located at the lower part of the roller body, and the rotation position of the cover plate can be controlled by the connecting rod, and the cover plate can also be opened by the gravity of the cover plate itself. The position of the hose can be fixed by the front clamping point and the rear clamping point to prevent the hose from being displaced when the roller body rotates; the curvature of the transverse arc groove is between 5° and 180°, which can fit the hose to the roller to the maximum extent, thereby realizing powerful power. The longitudinal pressing groove is used to semi-fix the hose to prevent the hose from moving and deforming. A plurality of longitudinal pressing grooves are arranged in the cover plate, which can realize the simultaneous liquid inflow of 3 to 48 hoses. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The structure of the multi-channel peristaltic pump capable of automatic pressure relief of the present invention is schematically shown. Figure 1 ;

[0016] Figure 2 The structure of the multi-channel peristaltic pump capable of automatic pressure relief of the present invention is schematically shown. Figure 2 ;

[0017] Figure 3 The structure of the multi-channel peristaltic pump capable of automatic pressure relief of the present invention is schematically shown. Figure 3 ;

[0018] Figure 4 The structure of the cover plate in the multi-channel peristaltic pump capable of automatic pressure relief of the present invention is schematically shown. Figure 1 ;

[0019] Figure 5 The structure of the cover plate in the multi-channel peristaltic pump capable of automatic pressure relief of the present invention is schematically shown. Figure 2 ;

[0020] Wherein: 100, multi-channel peristaltic pump capable of automatic pressure relief; 1, bracket; 2, cover opening motor; 3, screw rod; 4, slider; 5, slide rail; 6, second positioning block; 61, second backrest; 7, connecting rod; 8, first positioning block; 81, first backrest; 9, cover plate; 91, front clamping point; 92, rear clamping point; 93, horizontal arc groove; 94, longitudinal pressing groove; 10, hose; 11, rotating motor; 12, driving gear; 13, driven gear; 14, roller; 15, rolling plate; 16, roller; 17, horizontal side plate; 18, hinge; 19, transmission belt; 20, positioning piece; 21, cover opening limit switch; 22, cover closing limit switch. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The object of the present invention is to provide a multi-channel peristaltic pump capable of automatic pressure relief, so as to solve the problems existing in the above-mentioned prior art and realize automatic pressure relief of the hose for convenient use.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 5 As shown: This embodiment provides a multi-channel peristaltic pump 100 capable of automatic pressure relief, including a bracket 1, on which a steering motor, a roller body, a cover plate 9 and a cover opening and closing mechanism are arranged.

[0025] The roller body is cylindrical, and a plurality of circumferentially distributed axial protrusions are arranged on the cylindrical surface of the roller body. The two ends of the roller body are respectively rotatably matched with the bracket 1, and the steering motor can drive the roller body to rotate. In this embodiment, the roller body includes a roller 14, two roller plates 15 and a plurality of rollers 16. The two ends of the roller 14 are respectively rotatably matched with the bracket 1, and the two roller plates 15 are respectively fixed on the roller 14. A plurality of rollers 16 uniformly arranged along the circumference of the roller 14 are fixed between the two roller plates 15, and the rollers 16 can rotate relative to the roller plates 15. A driving gear 12 is fixed on the output shaft of the steering motor, and a driven gear 13 is fixed at one end of the roller 14. A transmission belt 19 is wound around the driving gear 12 and the driven gear 13. When the steering motor is turned on, the driving gear 12 is driven to rotate, and the driving gear 12 drives the driven gear 13 to rotate through the transmission belt 19, and the driven gear 13 drives the roller 14 and the roller plate 15 to rotate, and the roller plate 15 drives the roller 16 to rotate.

[0026] The cover plate 9 is located below the roller pressing body and one end is hinged to the bracket 1. Specifically, a transverse side plate 17 is provided on the top of the bracket 1, and a hinge 18 is provided at the bottom end of the transverse side plate 17. One end of the cover plate 9 is rotatably connected to the transverse side plate 17 through the hinge 18; a transverse arc groove 93 and a plurality of longitudinal grooves 94 for placing the hose 10 are provided on the top surface of the cover plate 9, and each longitudinal groove intersects with the bottom of the transverse arc groove 93 (refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 ), the purpose of such arrangement is that when the cover plate 9 is horizontal, after the bottom of the rolling body extends into the transverse arc groove 93, the side wall of the roller 16 on the rolling body can press the hose 10 semi-fixed in the longitudinal groove; the longitudinal pressing groove 94 is a through groove, one end of the longitudinal pressing groove 94 is provided with a front clamping point 91, and the other end of the longitudinal pressing groove 94 is provided with a rear clamping point 92, the position of the hose 10 can be fixed by the front clamping point and the rear clamping point to prevent the hose 10 from being displaced when the rolling body rotates.

[0027] The cover opening and closing mechanism includes a cover opening motor 2, a screw rod 3, a slider 4, a slide rail 5 and a connecting rod 7. The cover opening motor 2 and the slide rail 5 are respectively fixed on the bracket 1. The screw rod 3 is fixedly connected to the output shaft of the cover opening motor 2. The slider 4 is threadedly connected to the screw rod 3 and slidably cooperates with the slide rail 5. One end of the connecting rod 7 is rotatably connected to the top of the slider 4, and the other end is rotatably connected to the cover plate 9. The rotational connection between the connecting rod 7 and the cover plate 9 is far away from the end where the cover plate 9 is hinged to the bracket 1.

[0028] A first positioning block 8 is fixedly provided at the bottom end of the cover plate 9, a second positioning block 6 is fixedly provided at the top end of the slider 4, a first backrest 81 perpendicular to the bottom surface of the cover plate 9 is provided at one end of the first positioning block 8, a second backrest 61 perpendicular to the top surface of the slider 4 is provided at one end of the second positioning block 8, one end of the connecting rod 7 is hinged to the first positioning block 8, the other end of the connecting rod 7 is hinged to the second positioning block 6, and the connecting rod 7 is located between the first backrest 81 and the second backrest 61. The setting of the first backrest 81 and the second backrest 61 can limit the rotation of the connecting rod 7.

[0029] A horizontal positioning plate is fixedly connected to the top of the slider 4, and the length direction of the positioning plate is perpendicular to the length direction of the slide rail 5; a cover opening limit switch 21 and a cover closing limit switch 22 are fixedly provided on the bracket 1, and the cover opening limit switch 21 and the cover closing limit switch 22 are electrically connected to the cover opening motor 2 respectively. When the positioning plate moves with the slider 4, the cover opening limit switch 21 and the cover closing limit switch 22 can be triggered, and the cover opening motor 2 can be turned off after the cover opening limit switch 21 or the cover closing limit switch 22 is triggered.

[0030] The specific working process of the multi-channel peristaltic pump 100 capable of automatic pressure relief in this embodiment is as follows:

[0031] When in use, the cover opening motor 2 drives the screw rod 3 to rotate, so that the slider 4 drives the positioning piece 20 to move to the cover opening limit switch 21, and at the same time, the slider 4 drives the second positioning block 6 to drag the connecting rod 7, thereby pulling the first positioning block 8, so that the cover 9 is in the open state; the hose 10 passes through the hinge 18 of the cover 9 and the roller assembly, and the bottom of the hose 10 is located in the longitudinal pressing groove 94, and two clamps are set on the hose 10, one of which is clamped at the front clamping point 91, and the other clamp is clamped at the rear clamping point 92, and there is a certain pre-tightening force between the clamp and the hose 10, so that the hose 10 can be prevented from sliding along the length direction of the longitudinal groove 94 on the cover plate 9. Repeat the above steps to insert multiple hoses 10; drive the cover opening motor 2 to drive the screw rod 3 to rotate, and the slider 4 drives the second positioning block 6 and the positioning plate 20 to move to the cover closing limit switch 22. At this time, the connecting rod 7 is close to the first backrest 81 and the second backrest 61, and the connecting rod 7 is close to the cover plate 9, so that the hose 10 is fixed between the cover plate 9 and the roller pressing body. When the rotating motor 11 rotates, it drives the driving wheel gear to rotate, and drives the driven wheel to rotate through the transmission belt 19, thereby driving the roller 14 to rotate. At the same time, the roller 16 rotates and revolves around the roller 14. Each roller 16 intermittently squeezes the hose 10, and a vacuum is generated when the hose 10 restores its shape, thereby sucking the liquid into the tube. Because there are front and rear clamping points, the hose 10 is fixed and will not move with the peristaltic pump. At the same time, the squeezing arc makes the hose 10 close to the roller 16;

[0032] After use stops, the cover opening motor 2 drives the screw rod 3 to rotate, and the slider 4 drives the positioning piece 20 to move to the cover opening limit switch 21. At the same time, the slider 4 drives the second positioning block 6 to drag the connecting rod 7, thereby pulling the first positioning block 8, so that the cover plate 9 is in an open state, thereby realizing the pressure relief of the hose 10.

[0033] In the description of the present invention, it should be noted that the terms "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A multi-channel peristaltic pump capable of automatic pressure relief, characterized in that: The invention comprises a bracket, on which a steering motor, a roller body, a cover plate and an opening and closing cover mechanism are arranged, the roller body is columnar, a plurality of circumferentially distributed axial protrusions are arranged on the cylindrical surface of the roller body, the two ends of the roller body are respectively rotatably matched with the bracket, and the steering motor can drive the roller body to rotate; the cover plate is located below the roller body and one end is hinged to the bracket, a transverse arc groove and a plurality of longitudinal pressing grooves for placing hoses are arranged on the top surface of the cover plate, and each of the longitudinal pressing grooves intersects with the bottom of the transverse arc groove , when the cover is horizontal, the bottom of the roller body extends into the transverse arc groove; the cover opening and closing mechanism includes a cover opening motor, a screw rod, a slider, a slide rail and a connecting rod, the cover opening motor and the slide rail are respectively fixed on the bracket, the screw rod is fixedly connected to the output shaft of the cover opening motor, the slider is threadedly connected to the screw rod and slidably cooperates with the slide rail, one end of the connecting rod is rotatably connected to the top end of the slider, and the other end is rotatably connected to the cover, and the rotation connection between the connecting rod and the cover is far away from the end where the cover is hinged to the bracket; The rolling body comprises a roller shaft, two rolling plates and a plurality of rollers; the two ends of the roller shaft are respectively rotatably matched with the bracket, the two rolling plates are respectively fixed on the roller shaft, and a plurality of rollers uniformly arranged along the circumference of the roller shaft are fixed between the two rolling plates, and the rollers can rotate relative to the rolling plates; The longitudinal pressing groove is a through groove, one end of which is provided with a front clamping point, and the other end of which is provided with a rear clamping point; a first positioning block is fixedly provided at the bottom end of the cover plate, and a second positioning block is fixedly provided at the top end of the slider, one end of the first positioning block is provided with a first backrest perpendicular to the bottom surface of the cover plate, and one end of the second positioning block is provided with a second backrest perpendicular to the top surface of the slider, one end of the connecting rod is hinged to the first positioning block, and the other end of the connecting rod is hinged to the second positioning block, and the connecting rod is located between the first backrest and the second backrest.

2. The multi-channel peristaltic pump capable of automatic pressure relief according to claim 1, characterized in that: A driving gear is fixedly arranged on the output shaft of the steering motor, a driven gear is fixedly arranged on one end of the roller, and a transmission belt is wound around the driving gear and the driven gear.

3. The multi-channel peristaltic pump capable of automatic pressure relief according to claim 1, characterized in that: A horizontal positioning plate is fixedly connected to the top of the slider, and the length direction of the positioning plate is perpendicular to the length direction of the slide rail; an opening limit switch and a closing limit switch are fixedly provided on the bracket, and the positioning plate can trigger the opening limit switch and the closing limit switch when moving with the slider.

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