Pressure pipe gap measuring device, peristaltic pump and pressure pipe gap measuring method

Abstract

The invention relates to the technical field of peristaltic pumps, in particular to a pressure pipe gap measuring device, a peristaltic pump and a pressure pipe gap measuring method.The pressure pipe gap measuring device is internally provided with a fixing assembly and a measuring assembly, the fixing assembly is used for being installed on a gap adjusting window of a pump head, and the measuring assembly is elastically connected with the fixing assembly; the measuring assembly and the fixing assembly can slide relative to each other, one end of the measuring assembly extends into the gap adjusting window and faces one side of the pinch roller, so that the working face of the pinch roller can apply force to the end, extending into the gap adjusting window, of the measuring assembly, the measuring assembly generates displacement relative to the fixing assembly, and scales are arranged on the measuring assembly. The display component is used for displaying relative displacement generated by the measuring component and the fixing component; therefore, when the pressure pipe gap is adjusted, the current pressure pipe gap can be obtained through the scales on the measuring assembly, so that the current pressure pipe gap does not need to be measured by using a measuring tool repeatedly, the adjustment process of the pressure pipe gap is simplified, and the adjustment efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of peristaltic pumps, and in particular to a pressure tube gap measuring device, a peristaltic pump and a pressure tube gap measuring method. Background Art

[0002] When cutting silicon wafers, mortar cutting, diamond wire cutting and laser slicing are usually used. Among them, mortar cutting uses mortar as the cutting medium and performs cutting operations through a mortar slicer. In this process, a peristaltic pump is required to transport and recycle the mortar.

[0003] A peristaltic pump is a positive displacement pump consisting of a drive motor, a pump head and a hose; see Figure 7 Its working principle is: the pinch wheel on the pump head rotates and squeezes along the hose. After the pinch wheel passes through the hose, the hose returns to its original shape under the action of its own elasticity, and a high vacuum is generated in the hose, thereby sucking the material into the tube cavity. Then, under the squeezing of the pinch wheel, the material is discharged from the hose along the rotation direction of the pinch wheel. In this way, as the pinch wheel circulates, the material is continuously sucked in and discharged, thereby achieving the purpose of material transportation.

[0004] At present, the compression tube gap of the pump head is generally fixed. The so-called compression tube gap refers to the gap formed between the outer cylindrical envelope surface of the roller of the pump head and the working surface of the pressure wheel. The optimal value of the compression tube gap is the gap at which the pump head can reliably absorb the transported material; when the actual compression tube gap is too large, the peristaltic pump will not be able to work normally; when the actual gap is smaller than the optimal gap, the peristaltic pump is in an overpressure state. Although it does not affect the operation of the peristaltic pump, it will cause the wear of the hose to increase. The smaller the actual gap, the more serious the wear of the hose; therefore, it is necessary to adjust the compression tube gap to ensure the normal operation of the pump head. At present, when adjusting the compression tube gap, it is necessary to first use a measuring tool such as a steel ruler or a tape measure to manually measure the compression tube gap on the gap adjustment window of the pump head, then adjust the compression tube gap, and then measure the compression tube gap again on the gap adjustment window of the pump head, and repeat this many times until the compression tube gap reaches the optimal gap; this adjustment process is very cumbersome and inefficient. Summary of the invention

[0005] In view of this, it is necessary to provide a pressure tube gap measuring device, a peristaltic pump and a pressure tube gap measuring method, which can measure the pressure tube gap while adjusting the pressure tube gap, thereby simplifying the pressure tube gap adjustment process and improving the efficiency of adjusting the pressure tube gap.

[0006] In the first aspect, the present invention provides a pressure tube gap measuring device, comprising a fixed component and a measuring component, wherein the fixed component is used to be installed on the gap adjustment window of the pump head, the measuring component and the fixed component are elastically connected, and the measuring component and the fixed component can slide relative to each other, one end of the measuring component extends into the gap adjustment window and faces the side of the pressure wheel, so that the working surface of the pressure wheel can apply force to the end of the measuring component extending into the gap adjustment window, causing the measuring component to be displaced relative to the fixed component, and a scale is provided on the measuring component for displaying the relative displacement generated by the measuring component and the fixed component.

[0007] Preferably, the fixing assembly includes a fixing plate having a mounting hole in the center and two fixing holes of the same size symmetrically formed on both sides; the mounting hole is used to install the measuring assembly, and the two fixing holes are used to install the fixing plate onto the gap adjustment window of the pump head.

[0008] Preferably, a limiting ring is further provided on the fixing plate, and the limiting ring and the mounting hole are coaxially arranged to enable the measuring component to extend and retract along a straight line in the mounting hole.

[0009] Preferably, the measuring assembly includes a measuring piece, which is slidably mounted in the mounting hole, one end of the measuring piece extends into the gap adjustment window for contacting the working surface of the pressure wheel, and a scale is provided on the measuring piece for displaying the distance between the working surface of the pressure wheel and the fixed plate.

[0010] Preferably, the measuring assembly further comprises a collar and a spring, wherein the collar is fixedly mounted on the measuring member at one end for contacting the working surface of the pressure wheel, and the two ends of the spring are respectively fixedly connected to the collar and the limit ring.

[0011] Preferably, a limiting member is provided at one end of the measuring member facing away from the working surface of the pressure wheel to prevent the measuring member from popping out from the fixing plate under the action of a spring.

[0012] Preferably, each component of the fixing assembly and the measuring assembly is made of a material that is not prone to rust and has high tensile strength.

[0013] In the second aspect, the present invention provides a peristaltic pump, which includes the pressure tube gap measuring device described in the first aspect, a drive motor, a pump head, a hose, a rotating bracket, two pressure wheels and eight side guide wheels, the pump head is provided with a gap adjustment window and an observation window, the gap adjustment window is used to adjust the pressure tube gap, and the observation window is used to observe the situation inside the pump head, the pressure tube gap measuring device is installed on the gap adjustment window, the rotating bracket is rotatably installed in the pump head, the driving end of the drive motor is drivingly connected to the rotating bracket, the two pressure wheels are respectively arranged at both ends of the rotating bracket, and each pressure wheel is provided with fastening screws on both sides to fix the pressure wheel to the rotating bracket, the four side guide wheels are evenly arranged on one side of the rotating bracket, and the other four side guide wheels are evenly arranged on the other side of the rotating bracket, and the hose is installed in the pump head.

[0014] In a third aspect, the present invention provides a method for measuring a pressure pipe gap based on the peristaltic pump according to the second aspect, comprising the following steps: Step 1: Remove the protective cover of the gap adjustment window, and install the fixing plate on the gap adjustment window by fixing the two fixing holes to the gap adjustment window with two screws respectively; Step 2: Adjust the rotating bracket so that one end of it faces the gap adjustment window; Step 3: Obtain the value of the pressure pipe gap according to the scale on the measuring piece; Step 4: Loosen the fastening screws on both sides of the clamping wheel, rotate the clamping wheel clockwise or counterclockwise to adjust the clamping gap, and obtain the current value of the clamping gap from the measuring piece at the same time; Step 5: When the gap between the compressed pipes reaches the optimum gap, stop rotating the compression wheel and tighten the fastening screws on both sides of the compression wheel.

[0015] The above-mentioned pressure pipe gap measuring device is provided with a fixing component and a measuring component. The fixing component is used to be installed on the gap adjustment window of the pump head. The measuring component and the fixing component are elastically connected, and the measuring component and the fixing component can slide relative to each other. One end of the measuring component extends into the gap adjustment window and faces the side of the pressing wheel, so that the working surface of the pressing wheel can apply force to the end of the measuring component extending into the gap adjustment window, so that the measuring component is displaced relative to the fixed component. The measuring component is provided with a scale for displaying the relative displacement of the measuring component and the fixed component; in this way, when adjusting the pressure pipe gap, the measuring component extends into the gap. One end of the adjustment window will be displaced as the clamping wheel rotates, and the relative displacement of the measuring component and the fixed component will be displayed through the scale on the measuring component. Since the fixed component is installed on the gap adjustment window, the measuring component is installed on the fixed component, and one end is in contact with the clamping wheel, the relative displacement of the measuring component and the fixed component is the compression tube gap. The current compression tube gap can be obtained through the scale on the measuring component, and there is no need to repeatedly use the measuring tool to measure the current compression tube gap when adjusting the compression tube gap, so as to simplify the adjustment process of the compression tube gap and improve the efficiency of adjusting the compression tube gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an oblique bird's-eye view of the pressure pipe gap measuring device of the present application.

[0017] Figure 2 It is an oblique top-down view of the fixing assembly of the present application.

[0018] Figure 3 This is an oblique bird's-eye view from another perspective of the pressure pipe gap measuring device of the present application.

[0019] Figure 4 It is an oblique top-down view of the peristaltic pump of the present application.

[0020] Figure 5 This application Figure 4 A partial enlarged view of area A.

[0021] Figure 6 It is a front view of the inside of the peristaltic pump of the present application.

[0022] Figure 7 It is a working principle diagram of a peristaltic pump in the background technology of this application.

[0023] In the figure: a pressure pipe gap measuring device 10, a fixing assembly 20, a fixing plate 21, a mounting hole 22, a fixing hole 23, a limit ring 24, a measuring assembly 30, a measuring piece 31, a collar 32, a spring 33, a limit piece 34, a peristaltic pump 40, a drive motor 41, a pump head 42, a hose 43, a rotating bracket 44, a clamping wheel 45, a gap adjustment window 46, an observation window 47, and a side guide wheel 48. DETAILED DESCRIPTION

[0024] The technical solutions and technical effects of the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings of the present invention.

[0025] Please refer to Figure 1 In a first aspect, the present invention provides a pressure pipe gap measuring device 10, comprising a fixing assembly 20 and a measuring assembly 30, wherein the fixing assembly 20 is used to be mounted on the gap adjustment window 46 of the pump head 42, the measuring assembly 30 and the fixing assembly 20 are elastically connected, and the measuring assembly 30 and the fixing assembly 20 can slide relative to each other, one end of the measuring assembly 30 extends into the gap adjustment window and faces one side of the pressure wheel, so that the working surface of the pressure wheel can apply force to the end of the measuring assembly 30 extending into the gap adjustment window, so that the measuring assembly 30 is displaced relative to the fixing assembly 20, and a scale is provided on the measuring assembly 30 for displaying the relative displacement generated by the measuring assembly 30 and the fixing assembly 20; in this way, when adjusting the pressure When the tube gap is adjusted, the end of the measuring component 30 extending into the gap adjustment window will be displaced as the clamping wheel rotates, and the relative displacement of the measuring component 30 and the fixed component 20 will be displayed through the scale provided on the measuring component 30. Since the fixed component 20 is installed on the gap adjustment window, the measuring component 30 is installed on the fixed component 20, and one end is in contact with the clamping wheel, the relative displacement of the measuring component 30 and the fixed component 20 is the tube gap. The current tube gap can be obtained through the scale on the measuring component 30, and there is no need to repeatedly use the measuring tool to measure the current tube gap when adjusting the tube gap, so as to simplify the adjustment process of the tube gap and improve the efficiency of adjusting the tube gap.

[0026] Please refer to Figure 2 Furthermore, the fixing assembly 20 includes a fixing plate 21, a mounting hole 22 is opened in the center of the fixing plate 21, and two fixing holes 23 of the same size are opened symmetrically on both sides; the mounting hole 22 is used to install the measuring assembly 30, and the two fixing holes 23 are used to install the fixing plate 21 on the gap adjustment window 46 of the pump head 42. Specifically, the fixing holes 23 are fixedly connected to the gap adjustment window 46 of the pump head 42 by bolts, so that the fixing plate 21 is fixedly installed on the gap adjustment window 46 of the pump head 42.

[0027] Furthermore, a limit ring 24 is provided on the fixing plate 21, and the limit ring 24 and the mounting hole 22 are coaxially arranged to enable the measuring component 30 to extend and retract along a straight line in the mounting hole 22, thereby preventing measurement errors caused by tilting of the measuring component 30 during the extension and retraction process.

[0028] Please refer to Figure 3Furthermore, the measuring assembly 30 includes a measuring piece 31, which is slidably installed in the mounting hole 22, and one end of the measuring piece 31 extends into the gap adjustment window for contacting the working surface of the pressure wheel 45. A scale is also provided on the measuring piece 31 to display the distance between the working surface of the pressure wheel 45 and the fixed plate 21. Specifically, since the fixed plate 21 is fixed on the gap adjustment window 46 of the pump head 42, the distance between the working surface of the pressure wheel 45 and the fixed plate 21 is the pressure tube gap.

[0029] In this embodiment, a cylindrical scale is used as the measuring member 31 .

[0030] Furthermore, the measuring assembly 30 also includes a collar 32 and a spring 33. The collar 32 is fixedly mounted on the measuring member 31 at one end thereof in contact with the working surface of the clamping wheel 45. Both ends of the spring 33 are fixedly connected to the collar 32 and the limit ring 24, respectively.

[0031] In this embodiment, the ring 32 is fixed between 2-6 mm of the scale of the measuring piece 31; the "0" scale line of the measuring piece 31 is located at the end of the measuring piece 31 that is used to contact the working surface of the clamping wheel 45, so as to directly display the current pipe pressing gap through the scale on the measuring piece 31, so that the staff can directly obtain the current pipe pressing gap by reading the reading on the measuring piece 31; when the measuring piece 31 is pulled, the display distance of the measuring piece 31 is between 20-40 mm to prevent the measuring piece 31 from being too long and causing inconvenience to the measurement of the pipe pressing gap.

[0032] Furthermore, a limiting member 34 is provided at one end of the measuring member 31 facing away from the working surface of the clamping wheel 45 to prevent the measuring member 31 from popping out from the fixing plate 21 under the action of the spring 33 .

[0033] In this embodiment, each component of the fixing assembly 20 and the measuring assembly 30 is made of a material that is not easy to rust and has high tensile strength, such as 304 stainless steel, to extend the service life of the compression pipe gap measuring device 10 and facilitate disassembly and cleaning of the compression pipe gap measuring device 10.

[0034] Please refer to Figures 4 to 6In the second aspect, the present invention provides a peristaltic pump 40, which includes a pressure tube gap measuring device 10, a drive motor 41, a pump head 42, a hose 43, a rotating bracket 44, two clamping wheels 45 and eight side guide wheels 48 as provided in the first aspect. A gap adjustment window 46 and an observation window 47 are provided on the pump head 42. The gap adjustment window 46 is used to adjust the pressure tube gap, and the observation window 47 is used to observe the situation in the pump head 42. The pressure tube gap measuring device 10 is installed on the gap adjustment window 46, and the rotating bracket 44 is rotatably installed in the pump head 42. The driving end of the drive motor 41 is drivingly connected to the rotating bracket 44. The two clamping wheels 45 are respectively arranged at both ends of the rotating bracket 44, and fastening screws are installed on both sides of each clamping wheel 45 to fix the clamping wheel 45 on the rotating bracket 44. The four side guide wheels 48 are evenly arranged on one side of the rotating bracket 44, and the other four side guide wheels 48 are evenly arranged on the other side of the rotating bracket 44. The hose 43 is installed in the pump head 42.

[0035] In this embodiment, an eccentric wheel is used as the clamping wheel 45. When the clamping wheel 45 is fixed from both sides by tightening screws, the distance between the working surface of the clamping wheel 45 and the outer circle envelope surface of the roller of the pump head 42 is ensured to be maximized. Therefore, when the clamping wheel 45 is rotated, whether it is rotated clockwise or counterclockwise, the compression tube gap is from large to small, so as to facilitate the adjustment of the compression tube gap.

[0036] In a third aspect, the present invention provides a method for measuring a pressure pipe clearance on the peristaltic pump 40 of the second aspect, comprising the following steps: Step 1: Remove the protective cover of the gap adjustment window 46, and install the fixing plate 21 on the gap adjustment window 46 by fixing the two fixing holes 23 to the gap adjustment window 46 with two screws respectively; Step 2: Adjust the rotating bracket 44 so that one end thereof faces the gap adjustment window 46; Step 3: Obtain the value of the pressure pipe gap according to the scale on the measuring piece 31; Step 4: Loosen the fastening screws on both sides of the pressing wheel 45, rotate the pressing wheel 45 clockwise or counterclockwise to adjust the pressing tube gap, and simultaneously obtain the value of the current pressing tube gap from the measuring member 31; Step 5: When the pipe pressing gap reaches the optimal gap, stop rotating the pressing wheel 45 and tighten the fastening screws on both sides of the pressing wheel 45.

[0037] In this embodiment, after the protective cover of the gap adjustment window 46 is removed in step 1, the two fixing holes 23 are connected to the holes used for installing the protective cover by two screws, so that there is no need to drill additional holes on the gap adjustment window 46.

[0038] The optimum gap varies according to the usage time of the hose 43, and is specifically: 1. The optimal clearance of the newly replaced hose 43 is 26-25mm; 2. The optimal clearance of hose 43 used for three months is 25-24mm; 3. The optimal clearance of hose 43 used for five months is 24-23mm.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure pipe gap measuring device, characterized in that: It includes a fixed component and a measuring component, the fixed component is used to be installed on the gap adjustment window of the pump head, the measuring component and the fixed component are elastically connected, and the measuring component and the fixed component can slide relative to each other, one end of the measuring component extends into the gap adjustment window and faces the side of the pressure wheel, so that the working surface of the pressure wheel can apply force to the end of the measuring component extending into the gap adjustment window, so that the measuring component is displaced relative to the fixed component, and a scale is provided on the measuring component for displaying the relative displacement generated by the measuring component and the fixed component.

2. The pressure pipe gap measuring device according to claim 1, characterized in that: The fixing assembly includes a fixing plate, a mounting hole is opened in the center of the fixing plate, and two fixing holes of the same size are opened symmetrically on both sides; the mounting hole is used to install the measuring assembly, and the two fixing holes are used to install the fixing plate on the gap adjustment window of the pump head.

3. The pressure pipe gap measuring device according to claim 2, characterized in that: The fixing plate is also provided with a limiting ring, and the limiting ring and the mounting hole are coaxially arranged to enable the measuring component to extend and retract along a straight line in the mounting hole.

4. The pressure pipe gap measuring device according to claim 3, characterized in that: The measuring assembly includes a measuring piece, which is slidably installed in the mounting hole. One end of the measuring piece extends into the gap adjustment window for contacting the working surface of the pressure wheel. The measuring piece is provided with a scale for displaying the distance between the working surface of the pressure wheel and the fixed plate.

5. The pressure pipe gap measuring device according to claim 4, characterized in that: The measuring assembly also includes a collar and a spring. The collar is fixedly mounted on the measuring member at one end thereof for contacting the working surface of the pressure wheel. Both ends of the spring are fixedly connected to the collar and the limit ring respectively.

6. The pressure pipe gap measuring device according to claim 4, characterized in that: A limiting member is provided at one end of the measuring member facing away from the working surface of the pressure wheel to prevent the measuring member from popping out from the fixing plate under the action of the spring.

7. The pressure pipe gap measuring device according to claim 1, characterized in that: Each component of the fixing assembly and the measuring assembly is made of a material that is not prone to rust and has high tensile strength.

8. A peristaltic pump, characterized in that: It comprises the pressure pipe gap measuring device as described in any one of claims 1 to 7, a driving motor, a pump head, a hose, a rotating bracket, two pressure wheels and eight side guide wheels, the pump head is provided with a gap adjustment window and an observation window, the gap adjustment window is used to adjust the pressure pipe gap, the observation window is used to observe the situation inside the pump head, the pressure pipe gap measuring device is mounted on the gap adjustment window, the rotating bracket is rotatably mounted in the pump head, the driving end of the driving motor is drivingly connected to the rotating bracket, two pressure wheels are respectively arranged at both ends of the rotating bracket, fastening screws are installed on both sides of each pressure wheel to fix the pressure wheel on the rotating bracket, four side guide wheels are evenly arranged on one side of the rotating bracket, and another four side guide wheels are evenly arranged on the other side of the rotating bracket, and the hose is installed in the pump head.

9. A method for measuring the pressure tube gap based on the peristaltic pump according to claim 8, characterized in that: The following steps are involved: Step 1: Remove the protective cover of the gap adjustment window, and install the fixing plate on the gap adjustment window by fixing the two fixing holes to the gap adjustment window with two screws respectively; Step 2: Adjust the rotating bracket so that one end of it faces the gap adjustment window; Step 3: Obtain the value of the pressure pipe gap according to the scale on the measuring piece; Step 4: Loosen the fastening screws on both sides of the clamping wheel, rotate the clamping wheel clockwise or counterclockwise to adjust the clamping gap, and obtain the current value of the clamping gap from the measuring piece at the same time; Step 5: When the gap between the compressed pipes reaches the optimum gap, stop rotating the compression wheel and tighten the fastening screws on both sides of the compression wheel.

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