Rotary drive structure and peristaltic pump head with upper pressure block opening and closing drive structure

Abstract

The present invention discloses a rotary drive structure and a peristaltic pump head with an upper pressure block opening and closing drive structure, belonging to the technical field of rotary drive devices and peristaltic pumps. The rotary drive structure of the present invention includes a rocker, a drive disk, an inner lining disk, a lever and a slider, the rocker passes through the inner lining disk, the drive disk is sleeved outside the inner lining disk and in smooth contact with the inner lining disk, the slider has a sliding hole, one end of the lever is fixedly connected to the rocker, and the other end passes through the sliding hole, the slider is hinged to the disk surface of the drive disk; when the drive disk rotates relative to the inner lining disk, it drives the slider to move together, so that the lever drives the rocker to rotate under the action of the slider. The pump head of the present invention applies the rotary drive structure of the present invention, thereby realizing the automatic driving of the pressure block on the pump head, improving the automation level of the peristaltic pump, and is an important improvement to the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of a rotary drive device and a peristaltic pump, in particular to a rotary drive structure and a peristaltic pump head with an upper pressing block opening and closing drive structure. Background Art

[0002] Peristaltic pump is a special volumetric pump, mainly used for fluid distribution or delivery, widely used in pharmaceutical, food, chemical and other industries. Peristaltic pump consists of three parts: drive, pump head and hose. The fluid is isolated in the hose. When the peristaltic pump head is working, the roller rotates, and a section of the hose between the two rollers forms a "pillow"-shaped fluid, and the fluid is pumped by alternately squeezing and releasing the hose.

[0003] The specific structural forms of peristaltic pumps vary, but they are all based on the above principle. A common peristaltic pump includes an upper pressure block and a lower support, with a roller arranged in the lower support. The upper and lower pipe clamps are arranged in the upper pressure block and the lower support, and the upper and lower pipe clamps are used to limit the position of the hose. When loading and unloading the hose, this kind of peristaltic pump usually requires the operator to manually open or close the upper pressure block, which is cumbersome to operate and the degree of automation needs to be improved. Summary of the invention

[0004] In view of this, the present invention proposes a rotary drive structure and a peristaltic pump head with an upper pressure block opening and closing drive structure, which can automatically drive the opening and closing of the upper pressure block through a mechanical structure, thereby facilitating automatic control of the peristaltic pump.

[0005] Based on the above purpose, the technical solution provided by the present invention is:

[0006] A rotary drive structure comprises a rocker, a driving disk, an inner lining disk, a lever and a slider, wherein the rocker passes through the inner lining disk, the driving disk is sleeved outside the inner lining disk and in smooth contact with the inner lining disk, the slider is provided with a sliding hole, one end of the lever is fixedly connected to the rocker, and the other end passes through the sliding hole, and the slider is hinged to the disk surface of the driving disk; when the driving disk rotates relative to the inner lining disk, the slider is driven to move together, so that the lever drives the rocker to rotate under the action of the slider.

[0007] Furthermore, the inner lining disk has an outer edge, and a back plate is provided on the inner side of the driving disk. The back plate and the outer edge of the inner lining disk clamp the driving disk together, and a smooth gasket is provided between the driving disk and the back plate.

[0008] Furthermore, the inner lining disc is provided with an opening, the rocker passes through the inner lining disc through the opening, and the movement range of the rocker is within the area of ​​the opening.

[0009] In addition, the present invention also provides a peristaltic pump head with an upper pressure block opening and closing drive structure, comprising an upper pressure block and a lower support arranged on the front of the pump head, and an eccentric block for driving the upper pressure block to open and close, and a roller assembly for squeezing the hose is provided in the lower support; in addition, it also includes a rocker arranged on the back of the pump head and perpendicular to the back of the pump head, and a driving disk, a lining disk, a lever and a slider on the same side as the rocker, the lining disk being fixed on the back of the pump head, one end of the rocker being fixedly connected to the eccentric block, and the other end passing through the lining disk, the driving disk being sleeved outside the lining disk and in smooth contact with the lining disk, the slider being provided with a sliding hole, one end of the lever being fixedly connected to the rocker, and the other end passing through the sliding hole, and the slider being hinged to the disk surface of the driving disk; when the driving disk rotates, it drives the slider to move together, so that the lever drives the rocker to rotate under the action of the slider.

[0010] Furthermore, the back of the pump head has a back plate, the lining disc has an outer edge, the back plate and the outer edge of the lining disc together clamp the driving disc, and a smooth gasket is also provided between the driving disc and the back plate.

[0011] Further, the inner lining disc has an opening, the rocker passes through the inner lining disc through the opening, and the movement range of the rocker is within the area of ​​the opening. Further, the driving disc has external teeth.

[0012] Furthermore, it also includes an upper pressing block driving motor and a driving gear, wherein the upper pressing block driving motor directly drives the driving gear to rotate, and the driving gear is meshed with the driving disc teeth.

[0013] It can be seen from the above description that the beneficial effects of the technical solution of the present invention are:

[0014] 1. The present invention has a rotary drive structure composed of a drive disk, an inner lining disk, a lever and a slider. Through external drive control, the upper pressure block can be automatically opened and closed, reducing the workload of operators.

[0015] 2. The rotary drive structure of the present invention is relatively novel, has the characteristics of simple structure and convenient loading and unloading, and is convenient for upgrading and transforming the existing peristaltic pump, thereby improving its automation level.

[0016] 3. The rotary drive structure of the present invention is easy to use, and its driving mode can adopt various modes such as gear transmission, belt transmission, worm gear, etc. It can be used in various occasions to drive various adaptation equipment, and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to describe this patent more clearly, one or more drawings are provided below, which are intended to assist in explaining the background technology, technical principles and / or certain specific implementation plans of this patent.

[0018] Figure 1 is a schematic structural diagram of a peristaltic pump head in an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 Schematic diagram of the state of the peristaltic pump head when the pressure block is closed;

[0020] Figure 3 yes Figure 1 Schematic diagram of the state when the pressure block on the peristaltic pump head is opened. DETAILED DESCRIPTION

[0021] In order to facilitate technical personnel in this field to understand the technical solution of this patent, and at the same time, to make the technical purpose, technical solution and beneficial effects of this patent clearer and to fully support the scope of protection of the claims, the technical solution of this patent is further and more detailedly explained in the form of specific cases.

[0022] A rotary drive structure comprises a rocker, a driving disk, an inner lining disk, a lever and a slider, wherein the rocker passes through the inner lining disk, the driving disk is sleeved outside the inner lining disk and in smooth contact with the inner lining disk, the slider is provided with a sliding hole, one end of the lever is fixedly connected to the rocker, and the other end passes through the sliding hole, and the slider is hinged to the disk surface of the driving disk.

[0023] In this structure, the sliding hole of the slider is parallel to the surface of the driving disk, and the slider and the driving disk are hinged via a pivot perpendicular to the bottom surface of the slider and the surface of the driving disk. In this way, when the driving disk rotates relative to the liner disk, the slider will be driven to move together, so that the lever drives the rocker to rotate under the action of the slider.

[0024] Furthermore, the inner lining disk has an outer edge, and a back plate is provided on the inner side of the driving disk. The back plate and the outer edge of the inner lining disk clamp the driving disk together, and a smooth gasket is provided between the driving disk and the back plate.

[0025] Furthermore, the inner lining disc is provided with an opening, the rocker passes through the inner lining disc through the opening, and the movement range of the rocker is within the area of ​​the opening.

[0026] like Figure 1 As shown, a peristaltic pump head having the above-mentioned rotary drive structure, wherein the rotary drive structure is used to drive the opening and closing of the pressure block on the pump head.

[0027] The pump head includes a back plate 7, an upper pressure block 9 and a lower support arranged on one side of the back plate 7, and an eccentric block for driving the upper pressure block to open and close, and a roller assembly for squeezing the hose is provided in the lower support; in addition, it also includes a rocker 8 arranged on the other side of the back plate 7 and perpendicular to the back plate, and a driving disk 4, a lining disk 3, a lever 2 and a slider 1 on the same side as the rocker 8, the lining disk 3 is fixed on the back plate 7, one end of the rocker 8 is fixedly connected to the eccentric block, and the other end passes through the lining disk 3, the driving disk 4 is sleeved outside the lining disk 3 and in smooth contact with the lining disk 3, the slider 1 has a sliding hole, one end of the lever 2 is fixedly connected to the rocker 8, and the other end passes through the sliding hole, and the slider 1 is hinged to the disk surface of the driving disk 4; when the driving disk 4 rotates, it drives the slider 1 to move together, so that the lever 2 drives the rocker 8 to rotate under the action of the slider 1.

[0028] Further, see Figure 1 The inner lining disk has an outer edge, and a smooth gasket 6 is provided between the driving disk 4 and the back plate 7. The back plate and the outer edge of the inner lining disk clamp the driving disk together.

[0029] Further, see Figure 1 The inner lining disc 3 has an opening, and the rocker 8 passes through the inner lining disc through the opening, and the movement range of the rocker is within the opening area.

[0030] Furthermore, it also includes a peristaltic pump motor, which is fixed on the liner disk and has a rotating shaft extending into the pump head to drive the movement of the roller assembly.

[0031] Further, see Figure 1 , and also includes an upper pressing block driving motor, the driving disk has external teeth, and the upper pressing block driving motor drives the driving disk 4 to move through the driving gear 5. Of course, the driving disk 4 can also be driven to move by belts, chain transmissions, worm gears, etc.

[0032] Furthermore, the first and second proximity switches for controlling the upper pressing block driving motor to stop are included, wherein the first proximity switch is arranged at the position of the slider when the upper pressing block is opened, and the second proximity switch is arranged at the position of the slider when the upper pressing block is closed. In addition, a fixed delay method can also be used to automatically stop the upper pressing block driving motor.

[0033] Figure 2 The state diagram of the upper pressure block when it is closed, the left side of the figure is Figure 1 The right side view of the pump head, and the left side view of the pump head on the right. It can be seen that the upper pressure block is in the closed state when the slider is on the left.

[0034] Figure 3 This is the state diagram when the upper pressure block is opened. The left side of the figure is Figure 1The right side view of the pump head, and the left side view of the pump head on the right. It can be seen that the upper pressure block is in the open state when the slider is on the right.

[0035] The rotary drive structure of the present invention has a variety of application scenarios. In any situation where manual operation is required, the rotary drive structure of the present invention can be used for automation transformation.

[0036] The peristaltic pump head of the present invention adopts this rotary drive structure, which significantly improves the automation level. When in use, through external button control, the upper pressing block drive motor can be issued an opening or closing instruction, thereby driving the drive disk 4 to perform corresponding movements. When the drive disk 4 moves to the corresponding position, the upper pressing block drive motor can be stopped by the induction of the proximity switch, thereby completing the opening and closing actions of the upper pressing block. The above control methods are common knowledge of those skilled in the art and will not be repeated here.

[0037] It should be understood that the above description of the specific implementation methods of this patent is only an exemplary description listed to facilitate ordinary technicians in the field to understand the patent scheme, and does not imply that the scope of protection of this patent is limited to these individual examples. Ordinary technicians in this field can fully understand the technical scheme of this patent and, without any creative work, obtain more specific implementation methods by combining technical features, replacing some technical features, adding more technical features, etc. to the examples listed in this patent. All these specific implementation methods are within the scope of the claims of this patent. Therefore, these new specific implementation methods should also be within the scope of protection of this patent.

Claims

1. A peristaltic pump head with an upper pressure block opening and closing driving structure, comprising an upper pressure block and a lower support arranged on the front of the pump head, and an eccentric block for driving the upper pressure block to open and close, wherein the lower support is provided with a roller assembly for squeezing a hose; characterized in that: It also includes a rocker disposed on the back of the pump head and perpendicular to the back of the pump head, a drive disc, a lining disc, a lever and a slider on the same side as the rocker, and an upper pressing block drive motor and a drive gear; The inner lining disk is fixed on the back of the pump head, one end of the rocker is fixedly connected to the eccentric block, and the other end passes through the inner lining disk, the driving disk is sleeved outside the inner lining disk and in smooth contact with the inner lining disk, the slider is provided with a sliding hole, one end of the pull rod is fixedly connected to the rocker, and the other end passes through the sliding hole, and the slider is hinged to the disk surface of the driving disk; when the driving disk rotates, the slider is driven to move together, so that the pull rod drives the rocker to rotate under the action of the slider; The back of the pump head is provided with a back plate, the inner lining disc is provided with an outer edge, the back plate and the outer edge of the inner lining disc clamp the driving disc together, and a smooth gasket is provided between the driving disc and the back plate; The inner lining plate has an opening, the rocker passes through the inner lining plate through the opening, and the movement range of the rocker is within the area of ​​the opening; The driving disc has external teeth, and the upper pressing block driving motor directly drives the driving gear to rotate, and the driving gear is meshed with the external teeth of the driving disc.

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