Cover opening and stopping mechanism for pump head of peristaltic pump

Abstract

The utility model discloses a peristaltic pump head cover opening and stopping mechanism, and belongs to the technical field of peristaltic pumps. The device comprises a body, a magnet and a cam. A rolling groove is formed in the rear surface of the body, and the cam is located in the rolling groove and can roll along the rolling groove. A limiting groove is formed in the rear surface of the body; the magnet is located in the limiting groove and can freely slide along the limiting groove, and one end of the magnet is hinged to an outer point I of the cam; wherein the outer point I deviates from the circle center of the cam, and the rolling direction of the cam is perpendicular to the moving direction of the magnet. According to the utility model, the magnetic induction sensor is adopted, wires are not needed, the magnetic induction sensor can be conveniently arranged on a pump head matched with a high-IP driver, and the IP protection level of the whole machine is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of peristaltic pumps, in particular to a peristaltic pump head cover opening and stopping mechanism. Background Art

[0002] Peristaltic pump is a special volumetric pump, mainly used for fluid distribution or delivery, and is widely used in pharmaceutical, food, chemical and other industries. When the peristaltic pump head is working, the roller rotates, and a section of the pump tube between the two rollers forms a "pillow"-shaped fluid, and the fluid is pumped by alternately squeezing and releasing the elastic delivery hose of the pump; after the pressure block on the pump head is opened, the hose can be installed, and the pump head can only work normally after the pressure block on the pump head is closed. The pressure block on the pump head needs to be opened manually.

[0003] Currently, most peristaltic pump head cover opening and stopping mechanisms use position sensors for judgment. Since the sensors need to transmit electrical signals via wires, they cannot be conveniently used in high IP drive products. Utility Model Content

[0004] In view of this, the utility model provides a peristaltic pump head cover opening and stopping mechanism, which adopts a magnetic induction sensor, does not require the use of wires, and can be easily installed on the pump head matched with a high IP driver to ensure that the IP protection level of the whole machine is not affected.

[0005] The utility model adopts the following technical solutions to achieve the above technical effects:

[0006] A peristaltic pump head cover opening and stopping mechanism comprises a body; a magnet and a cam; a rolling groove is provided on the rear surface of the body, the cam is located in the rolling groove and can roll along the rolling groove;

[0007] The rear surface of the body is also provided with a limiting groove; the magnet is located in the limiting groove and can slide freely along the limiting groove, wherein one end of the magnet is hinged to the boss of the cam;

[0008] The boss deviates from the center of the cam, and the rolling direction of the cam is perpendicular to the moving direction of the magnet.

[0009] Furthermore, it also includes a pump head rear cover, which is tightly attached to the rear surface of the body; the limiting groove is located on the pump head rear cover.

[0010] Furthermore, the diameter of the cam is the same as the width of the rolling groove, and the cam rolls along the length direction of the rolling groove.

[0011] Furthermore, it also includes a slider; the slider is located in the limiting groove, and one end of the slider is hinged to the boss; the magnet is installed on the slider.

[0012] Furthermore, it also includes an upper pressing block and a lever; the upper pressing block is tightly attached to the front surface of the body, and the two are slidably connected, and the sliding direction is parallel to the sliding direction of the magnet;

[0013] The main body is provided with a vertical groove running through it, and a guide groove is provided on the top of the upper pressure block; the lever is L-shaped, and the inner end of its vertical branch is located inside the guide groove, and the outer end of the horizontal branch passes through the rear wall of the upper pressure block and the vertical groove in sequence and is fixedly connected to the boss of the cam, wherein the horizontal branch is hinged to the rear wall of the upper pressure block and can slide freely along the vertical groove.

[0014] Furthermore, the vertical groove is parallel to the sliding direction of the magnet.

[0015] Furthermore, the lever comprises a horizontal branch and a vertical branch, and the inner ends of the horizontal branch and the vertical branch are fixedly connected.

[0016] Furthermore, when the upper pressing block is in the open state, the magnet is away from the magnetic induction sensor of the high IP driver and stops the high IP driver; when the upper pressing block is in the closed state, the magnet faces the magnetic induction sensor and triggers a magnetic induction signal.

[0017] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0018] 1. This utility model uses a magnetic induction sensor, no wires are required, and is suitable for installation on the pump head supporting the high IP drive

[0019] 2. The utility model has strong anti-interference ability, is not affected by external factors such as dust and water flow, is reliable to use, and is not easy to be damaged or fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the back structure of the upper pressing block in a closed state according to an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the back structure of the upper pressing block in a half-open state according to an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the back structure of the upper pressing block of the embodiment of the utility model when it is in an open state;

[0023] Figure 4 This is a schematic diagram of the front structure of the main body of an embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the pump head rear cover structure of an embodiment of the utility model;

[0025] In the figure: 1. upper pressure block 2. lever 3. camshaft 4. slider 5. cam 6. circular magnet 7. magnetic induction sensor 8. body. DETAILED DESCRIPTION

[0026] Below, the utility model is further described in conjunction with the accompanying drawings.

[0027] Reference Figures 1 to 3 , which are three states of the upper pressing block of this embodiment. A rolling groove is provided on the rear surface of the body of this embodiment. The cam is located in the rolling groove and can roll along the rolling groove;

[0028] Reference Figure 5 In this embodiment, the limiting groove is located on the rear cover of the pump head; the slider is located in the limiting groove, and one end of the slider is hinged to the boss of the cam; the magnet is installed on the slider.

[0029] The magnet slides freely along the limiting groove.

[0030] In this embodiment, the boss deviates from the center of the cam, and is located at the outer periphery of the cam as the horizontal branch outer end of the lever of this embodiment, and the rolling direction of the cam is perpendicular to the moving direction of the magnet.

[0031] In this embodiment, the diameter of the cam is the same as the width of the rolling groove, and the cam rolls along the length direction of the rolling groove.

[0032] The upper pressing block is tightly attached to the front surface of the body, and the two are slidably connected, and the sliding direction is parallel to the sliding direction of the magnet; Figure 4 and Figure 1 A vertical groove is provided on the main body, and a guide groove is provided on the top of the upper pressure block; the lever is L-shaped, and the inner end of its vertical branch is located inside the guide groove, and the outer end of the horizontal branch passes through the rear wall of the upper pressure block and the vertical groove in turn and is fixedly connected to the boss of the cam, wherein the horizontal branch is hinged to the rear wall of the upper pressure block and can slide freely along the vertical groove.

[0033] The high IP driver is installed at the rear of the pump head, and a magnetic induction sensor is provided on it to control the rotation of the driver. When it senses magnetism, the driver keeps rotating, and when it does not sense magnetism, the driver stops rotating.

[0034] When the upper pressure block is in the open state, the magnet is away from the magnetic induction sensor of the high IP driver and stops the high IP driver; when the upper pressure block is in the closed state, the magnet faces the magnetic induction sensor and triggers a magnetic induction signal.

[0035] 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.

[0036] In addition, for the purpose of simplifying the description, this patent may not list some common specific implementation schemes, which are naturally conceivable to ordinary technicians in this field after understanding the technical solution of this patent. Obviously, these solutions should also be included in the scope of protection of this patent.

Claims

1. A peristaltic pump head cover opening and stopping mechanism, comprising a body; characterized in that: It also includes a magnet and a cam; a rolling groove is provided on the rear surface of the body, and the cam is located in the rolling groove and can roll along the rolling groove; The rear surface of the body is also provided with a limiting groove; the magnet is located in the limiting groove and can slide freely along the limiting groove, wherein one end of the magnet is hinged to the boss of the cam; The boss deviates from the center of the cam, and the rolling direction of the cam is perpendicular to the moving direction of the magnet.

2. A peristaltic pump head cover opening and stopping mechanism according to claim 1, characterized in that: It also includes a pump head rear cover, which is tightly attached to the rear surface of the body; the limiting groove is located on the pump head rear cover.

3. A peristaltic pump head cover opening and stopping mechanism according to claim 1, characterized in that: The diameter of the cam is the same as the width of the rolling groove, and the cam rolls along the length direction of the rolling groove.

4. A peristaltic pump head cover opening and stopping mechanism according to claim 1, characterized in that: It also includes a slider; the slider is located in the limiting groove, and one end of the slider is hinged to the boss; the magnet is installed on the slider.

5. A peristaltic pump head cover opening and stopping mechanism according to claim 1, characterized in that: It also includes an upper pressing block and a lever; the upper pressing block is tightly attached to the front surface of the body, the two are slidably connected, and the sliding direction is parallel to the sliding direction of the magnet; The main body is provided with a vertical groove running through it, and a guide groove is provided on the top of the upper pressure block; the lever is L-shaped, and the inner end of its vertical branch is located inside the guide groove, and the outer end of the horizontal branch passes through the rear wall of the upper pressure block and the vertical groove in sequence and is fixedly connected to the boss of the cam, wherein the horizontal branch is hinged to the rear wall of the upper pressure block and can slide freely along the vertical groove.

6. A peristaltic pump head cover opening and stopping mechanism according to claim 5, characterized in that: The vertical groove is parallel to the sliding direction of the magnet.

7. A peristaltic pump head cover opening and stopping mechanism according to claim 5, characterized in that: The lever comprises a horizontal branch and a vertical branch, and the inner ends of the horizontal branch and the vertical branch are fixedly connected.

8. A peristaltic pump head cover opening and stopping mechanism according to claim 5, characterized in that: When the upper pressure block is in the open state, the magnet is away from the magnetic induction sensor of the high IP driver and stops the high IP driver; when the upper pressure block is in the closed state, the magnet faces the magnetic induction sensor and triggers a magnetic induction signal.

Images