Wear-resistant and easy-to-maintain structure of peristaltic pump pipeline

Abstract

The utility model discloses a peristaltic pump pipeline wear-resistant easy maintenance structure which comprises a rotor assembly, an arc-shaped pressing plate and a pump pipe assembly, and the lower half portion of the rotor assembly is arranged in a pump base cavity and coaxially installed on a driving shaft stretching into the cavity from a rear cavity wall shaft hole. The middle of the pump pipe assembly wraps the upper half portion of the rotor assembly, and the left portion and the right portion of the pump pipe assembly are clamped and embedded in pump pipe via holes formed in the left cavity wall and the right cavity wall of the cavity respectively. One end of the arc-shaped pressing plate is sleeved on a pin shaft I arranged on the wall of the rear cavity, a limiting screw for preventing the arc-shaped pressing plate from being separated is screwed at the front end of the pin shaft I, a pin shaft II corresponding to the other end of the arc-shaped pressing plate is arranged on the wall of the rear cavity, a limiting block is sleeved on the pin shaft II, and an adjusting screw screwed on the limiting block is downwards pressed on the arc-shaped pressing plate; and the lower half part of the rotor assembly is soaked in lubricating oil contained in the cavity. According to the structure, the pump pipe assembly is small in abrasion, and the arc-shaped pressing plate and the pump pipe assembly can be rapidly installed, replaced and adjusted.

Description

Technical Field

[0001] The utility model relates to a pump body structure, in particular to a peristaltic pump pipeline wear-resistant and easy-to-maintain structure. Background Art

[0002] Peristaltic pump is a device for conveying liquids, which is widely used in the fields of chemical analysis and testing instruments and medical devices. When the peristaltic pump is working, the motor rotates to drive the rotor assembly to compress the pump tube (hose) to produce a peristaltic effect, thereby sucking the liquid reagent from the sample tube into the instrument for analysis and testing.

[0003] When the peristaltic pump is working, the pump tube is always in a state of being worn by the rotor assembly, and needs to be frequently inspected and disassembled, which is inconvenient for maintenance. Moreover, as a consumable, the pump tube has a short replacement cycle and a high cost of use. Utility Model Content

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to propose a peristaltic pump pipeline wear-resistant and easy-to-maintain structure with a long service life and convenient replacement and disassembly.

[0005] The peristaltic pump pipeline wear-resistant and easy-to-maintain structure that can solve the above technical problems includes a pump tube assembly squeezed between a rotor assembly and an arc-shaped pressure plate, and the difference is:

[0006] 1. The lower half of the rotor assembly is arranged in the chamber of the pump seat and is coaxially mounted on the drive shaft extending from the shaft hole of the rear chamber wall into the chamber, and an oil seal is arranged between the drive shaft and the shaft hole.

[0007] 2. The middle part of the pump tube assembly is wrapped around the upper half of the rotor assembly, and the left and right parts of the pump tube assembly are respectively embedded in the pump tube through holes opened on the left and right cavity walls of the chamber.

[0008] 3. One end of the arc-shaped pressure plate is sleeved on the pin shaft I arranged on the rear cavity wall, and a limit screw is screwed on the front end of the pin shaft I to prevent the arc-shaped pressure plate from falling out. Corresponding to the other end of the arc-shaped pressure plate, a pin shaft II is arranged on the rear cavity wall, and a limit block is sleeved on the pin shaft II. The adjusting screw screwed on the limit block presses downward on the arc-shaped pressure plate.

[0009] 4. The lower half of the rotor assembly is immersed in the lubricating oil contained in the chamber.

[0010] An optimized structure of the rotor assembly includes an I-shaped bracket coaxially mounted on the drive shaft, and pressure rollers are evenly distributed on the circumference of the I-shaped bracket.

[0011] An optimized structure of the pump tube assembly includes two front and rear hoses, the front and rear pump tube holes are connected through front and rear slots I, and the slot I passes upward out of the cavity wall through a vertical slot II.

[0012] In order to prevent the front and rear hoses from deviating, the bottom surface of the arc-shaped pressing plate is provided with clamping grooves which are aligned with the front and rear hoses respectively.

[0013] Conventionally, an oil drain hole is opened at the bottom of the chamber and a plug is provided.

[0014] The pump seat is preferably made of alkali-resistant, acid-resistant and oil-resistant engineering plastics.

[0015] Beneficial effects of the utility model:

[0016] 1. In the wear-resistant and easy-to-maintain structure of the peristaltic pump pipeline of the utility model, when the rotor assembly is running, the pressure roller within the semicircular range of the lower part can transfer the lubricating oil in the chamber to the pump pipe assembly to play a lubricating role, which can effectively reduce the wear of the pump pipe.

[0017] 2. In the structure of the utility model, the arc-shaped pressing plate can be quickly installed and adjusted, and the pump tube assembly can be quickly disassembled and replaced, and the operation is simple, convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an axonometric diagram of an implementation method of the utility model.

[0019] Figure 2 for Figure 1 Exploded view of an embodiment.

[0020] Figure number identification: 1. Rotor assembly; 1-1. I-shaped bracket; 1-2. Pressure roller; 2. Arc pressure plate; 2-1. Slot; 3. Hose; 4. Drive shaft; 5. Pump seat; 6. Limit screw; 7. Pin shaft II; 8. Limit block; 9. Adjusting screw; 10. Plug; 11. Oil seal. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below in conjunction with the implementation modes shown in the accompanying drawings.

[0022] The utility model discloses a wear-resistant and easy-to-maintain peristaltic pump pipeline structure, comprising a rotor assembly 1, an arc-shaped pressure plate 2 and a pump pipe assembly arranged on a pump seat 5, wherein the pump seat 5 is made of alkali-resistant, acid-resistant and oil-resistant engineering plastics.

[0023] The pump seat 5 includes a chamber composed of front, rear, left, right and lower chamber walls. The front, left and right chamber walls are of the same height and are all lower than the rear chamber wall. The chamber is filled with lubricating oil. An axial hole is provided on the rear chamber wall. An oil drain hole and a plug 10 are provided on the lower chamber wall. A drive shaft 4 is passed forward through the axial hole. An oil seal 11 is provided between the drive shaft 4 and the axial hole. Front and rear pump pipe through holes are provided in the upper center of the left and right chamber walls. The front and rear pump pipe through holes are connected through the front and rear slots I. The slot I passes upward out of the chamber wall through the vertical slot II, such as Figure 1 , Figure 2 shown.

[0024] The rotor assembly 1 includes an I-shaped bracket 1-1, and freely rotatable pressure rollers 1-2 are evenly distributed on the circumference of the I-shaped bracket 1-1. The I-shaped bracket 1-1 is placed in the chamber and coaxially installed on the driving shaft 4. After being in place, the pressure rollers 1-2 on the lower half of the circumference of the I-shaped bracket 1-1 are immersed in lubricating oil. Figure 1 , Figure 2 shown.

[0025] The pump tube assembly includes two front and rear hoses 3. The middle parts of the front and rear hoses 3 are wrapped around the pressure roller 1-2 on the upper semicircle of the I-shaped bracket 1-1. The left and right parts of the front and rear hoses 3 are respectively embedded in the front and rear pump tube holes through the slots II and I. Figure 1 , Figure 2 shown.

[0026] The arc pressure plate 2 is pressed down on the front and rear hoses 3 on the upper semicircular pressure roller 1-2. The front and rear hoses 3 are clamped in the front and rear clamping grooves 2-1 opened on the bottom surface of the arc pressure plate 2. A sleeve hole is opened at the right end of the arc pressure plate 2. The arc pressure plate 2 is sleeved on the pin shaft I through the sleeve hole. The pin shaft I is installed on the corresponding position of the rear cavity wall. The front end of the pin shaft I is screwed with a limit screw 6 to block the arc pressure plate 2 to prevent the arc pressure plate 2 from falling off; the left end of the arc pressure plate 2 is provided with an adjustment component for adjusting the tightness of the arc pressure plate 2 to press the hose 3. The limit block 8 of the adjustment component is sleeved on the pin shaft II 7 through the sleeve hole. The pin shaft II 7 is installed on the corresponding position of the rear cavity wall. The limit block 8 is screwed with an adjustment screw 9, and the adjustment screw 9 presses downward on the arc pressure plate 2. Figure 1 , Figure 2 shown.

[0027] The above embodiments are only specific examples for further describing the purpose, technical solutions and beneficial effects of the present invention in detail, and the present invention is not limited thereto; any modifications, equivalent substitutions, improvements, etc. made within the scope of the disclosure of the present invention are included in the protection scope of the present invention.

Claims

1. A peristaltic pump pipeline wear-resistant and easy-to-maintain structure, comprising a pump tube assembly squeezed between a rotor assembly (1) and an arc-shaped pressure plate (2), characterized in that: The lower half of the rotor assembly (1) is arranged in the chamber of the pump seat (5) and is coaxially mounted on a drive shaft (4) extending from an axial hole in the rear chamber wall into the chamber, and an oil seal (11) is arranged between the drive shaft (4) and the axial hole; The middle part of the pump tube assembly is wrapped around the upper half of the rotor assembly (1), and the left and right parts of the pump tube assembly are respectively embedded in the pump tube through holes opened on the left and right walls of the chamber; One end of the arc-shaped pressure plate (2) is sleeved on a pin shaft I arranged on the rear cavity wall, and a limit screw (6) is screwed on the front end of the pin shaft I to prevent the arc-shaped pressure plate (2) from falling out. A pin shaft II (7) is arranged on the rear cavity wall corresponding to the other end of the arc-shaped pressure plate (2), and a limit block (8) is sleeved on the pin shaft II (7). The adjustment screw (9) screwed on the limit block (8) presses downward on the arc-shaped pressure plate (2); The lower half of the rotor assembly (1) is immersed in the lubricating oil contained in the chamber.

2. The wear-resistant and easy-to-maintain structure of the peristaltic pump pipeline according to claim 1 is characterized in that: The rotor assembly (1) comprises an I-shaped bracket (1-1) coaxially mounted on a drive shaft (4), and pressure rollers (1-2) are evenly distributed on the circumference of the I-shaped bracket (1-1).

3. The wear-resistant and easy-to-maintain structure of the peristaltic pump pipeline according to claim 1 is characterized in that: The pump tube assembly comprises two front and rear hoses (3), the front and rear pump tube holes are connected through front and rear slots I, and the slots I are connected to the cavity wall upwards through vertical slots II.

4. The wear-resistant and easy-to-maintain structure of the peristaltic pump pipeline according to claim 3 is characterized in that: The bottom surface of the arc-shaped pressing plate (2) is provided with clamping grooves (2-1) which are aligned with the front and rear hoses (3) respectively.

5. The wear-resistant and easy-to-maintain structure for peristaltic pump pipeline according to any one of claims 1 to 4, characterized in that: The bottom of the chamber is provided with an oil drain hole and a plug (10).

6. The wear-resistant and easy-to-maintain structure for peristaltic pump pipeline according to any one of claims 1 to 4, characterized in that: The pump seat (5) is made of alkali-resistant, acid-resistant and oil-resistant engineering plastics.

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