Glass rotameter calibration device

Abstract

The utility model discloses a glass rotameter calibration device, which relates to the technical field of glass rotameter calibration and is characterized by comprising a calibration detection base connected with an external water source pipe. The up-down driving mechanism is mounted and connected to the inner side of the left end of the calibration detection machine base; the movable adjusting rack is mounted and connected to the right end of the up-down driving mechanism; the calibration glass rotameter body is installed and connected to the left side of the upper end of the calibration detection machine base, and the technical effects are that the standard glass rotameter body can be placed on the right side of the upper end of the calibration detection machine base in a standard mode, so that personnel can conveniently compare and check calibration results; the calibration glass rotameter body needing to be calibrated can be conveniently compared and checked in the calibration check process, and therefore calibration comparison is more efficient and convenient.

Description

A calibration device for a glass rotor flowmeter Technical Field

[0001] This utility model relates to the field of glass rotor flowmeter calibration technology, specifically a glass rotor flowmeter calibration device. Background Technology

[0002] A glass rotor flowmeter is a volumetric flow meter that operates based on the principle of buoyancy and the fluid continuity equation. Its main components include a vertically installed glass tube and a float that can move freely up and down inside the tube. When fluid passes through the glass tube, it exerts an upward force on the float. The magnitude of this force is proportional to the fluid velocity. When calibrating a glass rotor flowmeter, a glass rotor flowmeter calibration device is required.

[0003] Existing Chinese patent CN210802625U, published on June 19, 2020, discloses a calibration device for a glass rotor flowmeter, including a base, a connecting seat, and a fixing plate. The connecting seat is fixedly installed on the top of the base. Two first bearings are provided on the upper surface of the base. A threaded rotating rod and a movable rod are movably mounted on the base through the two first bearings. The bottom end of the threaded rotating rod extends into the interior of the base through the first bearings. A second bevel gear is fixedly installed at one end of the threaded rotating rod inside the base. A partition is fixedly installed at one end inside the base. Second bearings are provided at the middle position inside the partition and at the middle position on one side wall of the base. The rotating rod is movably mounted inside the base through the second bearings.

[0004] However, the above-mentioned device cannot be effectively and intuitively compared during calibration and testing, lacking corresponding calibration comparison components. This makes it difficult to visually distinguish the results when calibrating glass rotor flow meters, and it is not very convenient for personnel to check the measurement results during calibration.

[0005] Therefore, we propose a novel calibration device for glass rotor flowmeters to solve the above-mentioned technical problems. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides a glass rotor flowmeter calibration device, which solves the problem that existing devices cannot effectively and intuitively compare and view the results during calibration and testing, and lack corresponding calibration comparison components. This makes it difficult for personnel to intuitively identify the results when calibrating glass rotor flowmeters, and is also inconvenient for them to view the measurement results.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a glass rotor flowmeter calibration device, comprising:

[0010] A calibration and testing base, which is connected to an external water supply pipe;

[0011] The upper and lower drive mechanism is installed and connected to the inner left side of the calibration and testing base. The upper and lower drive mechanism includes a lead screw body and a lead screw motor. The lead screw body and the lead screw motor are installed on the concave vertical plate by screws. The internal lead screw of the lead screw body is fixedly connected to the output shaft of the bottom lead screw motor. A lead screw slider is installed around the internal lead screw of the lead screw body. A dustproof folding cloth is installed in the vertical groove of the lead screw body. A movable adjustment frame is installed at the front end of the lead screw slider.

[0012] A movable adjustment frame is mounted and connected to the right end of the upper and lower drive mechanism;

[0013] The calibration glass rotor flowmeter body is installed and connected to the upper left side of the calibration and testing base;

[0014] A standard glass rotor flowmeter body is installed and connected to the upper right side of the calibration and testing base;

[0015] A flow meter calibration discharge mechanism is installed and connected to the middle of the front edge of the calibration and testing base. The flow meter calibration discharge mechanism is connected to the calibration glass rotor flow meter body and the standard glass rotor flow meter body.

[0016] Preferably, the calibration and testing base includes a four-hole mounting base plate. A hollow diverter base is fixedly connected to the middle of the upper end of the four-hole mounting base plate. An input connecting pipe is fixedly connected to the right end of the hollow diverter base. A calibration water source delivery pump is installed at the right end of the input connecting pipe by screws. The calibration water source delivery pump is connected to an external water source pipe. A calibration flow meter mounting connecting pipe is fixedly connected to the left side of the upper end of the hollow diverter base. A standard flow meter mounting connecting pipe is fixedly connected to the right side of the calibration flow meter mounting connecting pipe on the hollow diverter base. A standard glass rotor flow meter body is installed on the standard flow meter mounting connecting pipe by screws. A calibration glass rotor flow meter body is installed on the calibration flow meter mounting connecting pipe by screws. A flow meter calibration discharge mechanism is fixedly connected to the middle of the front edge of the four-hole mounting base plate.

[0017] Preferably, the flow meter calibration discharge mechanism includes a support plate, the lower end of which is fixed to a four-hole mounting base plate. A horizontal panel is fixed to the middle of the upper end of the support plate. A collecting discharge pipe is fixed through the middle of the inner side of the horizontal panel. A standard flow meter discharge pipe is fixed through the lower end of the collecting discharge pipe. A corrugated connecting pipe is fixed through the left end of the standard flow meter discharge pipe. The lower end of the standard flow meter discharge pipe is connected to the body of a standard glass rotor flow meter by screws. The corrugated connecting pipe is connected to the body of a calibration glass rotor flow meter by screws. A concave plate is fixed to the left edge of the four-hole mounting base plate.

[0018] Preferably, the movable adjustment frame includes a screw mounting panel, a hollow sleeve is fixedly connected to the middle of the front end of the screw mounting panel, a movable sleeve rod is sleeved on the inner side of the front end of the hollow sleeve, the movable sleeve rod is limited and sleeved in the hollow sleeve by an anti-disengagement ring, the movable sleeve rod and the hollow sleeve are fixedly connected by a locking bolt, a positioning screw tube is fixedly connected to the front end of the movable sleeve rod, and a rotation adjustment mechanism is rotatably connected to the internal thread of the positioning screw tube.

[0019] Preferably, the rotation adjustment mechanism includes an adjustment rotation screw, which is threadedly rotatably connected to a positioning screw tube. A connecting end plate is fixedly connected to the inner end of the adjustment rotation screw, and a pneumatic adsorption mechanism is fixedly connected to the inner end of the connecting end plate.

[0020] Preferably, the pneumatic adsorption mechanism includes a hollow suction hood, with a pneumatic connecting pipe fixedly connected to the right end of the hollow suction hood, the pneumatic connecting pipe being connected to an air pump, and a hollow arc-shaped suction plate fixedly connected to the inner end of the hollow suction hood.

[0021] Preferably, the hollowed-out arc-shaped suction plate includes an arc-shaped return plate, the inside of which is provided with an adsorption groove cavity, and an arc-shaped hollow plate is fixedly connected to the inner side of the adsorption groove cavity at the front end of the arc-shaped return plate, and the arc-shaped return plate is fixedly connected to the hollow suction cover.

[0022] Preferably, the outer end of the arc-shaped perforated plate is attached to and adsorbed onto the outer wall of the calibration glass rotor flowmeter body.

[0023] (III) Beneficial Effects

[0024] Compared with the prior art, the present invention provides a calibration device for a glass rotor flowmeter, which has the following advantages:

[0025] 1. The standard glass rotor flowmeter body of this utility model can be placed on the upper right side of the calibration and testing base, which makes it convenient for personnel to compare and view the calibration results. This makes it easier to compare and view the calibration glass rotor flowmeter body that needs to be calibrated during calibration, thus making the calibration comparison more efficient and convenient.

[0026] 2. The flow meter calibration discharge mechanism of this utility model can receive the calibration test liquid output from the calibration glass rotor flow meter body and the standard glass rotor flow meter body. The flow meter calibration discharge mechanism can transport the liquid to the storage container of the external water source pipe, so that the calibration can be recycled. Attached Figure Description

[0027] Figure 1 is a three-dimensional structural diagram of this utility model;

[0028] Figure 2 is a schematic diagram of the calibration part of this utility model;

[0029] Figure 3 is a schematic diagram of the combined structure of the mobile adjustment frame, the rotation adjustment mechanism and the pneumatic adsorption mechanism of this utility model;

[0030] Figure 4 is a schematic diagram of the fixed placement frame and the upper and lower drive mechanism of this utility model;

[0031] Figure 5 is a schematic diagram of the structure of the movable adjustment frame of this utility model;

[0032] Figure 6 is a schematic diagram of the hollowed-out arc-shaped suction plate structure of this utility model;

[0033] Figure 7 is a schematic diagram of the calibration and testing base structure of this utility model.

[0034] In the picture:

[0035] 1. Four-hole mounting base plate; 11. Concave vertical plate; 2. Hollow splitter base; 21. Calibration water source delivery pump; 22. Input connection pipe; 3. Screw mounting panel; 31. Hollow sleeve; 32. Positioning screw; 33. Locking bolt; 34. Movable sleeve rod; 341. Anti-detachment retaining ring; 4. Screw body; 41. Screw slider; 42. Screw motor; 5. Calibration glass rotor flowmeter body; 51. Calibration flowmeter mounting connection pipe; 6. Air pressure connection pipe; 61. Hollow suction cover; 7. Adjusting rotating screw; 71. Connecting end plate; 8. Arc-shaped return plate; 81. Arc-shaped hollow plate; 82. Adsorption tank cavity; 9. Horizontal panel; 91. Standard flowmeter discharge pipe; 92. Corrugated connection pipe; 93. Collecting discharge pipe; 94. Supporting vertical plate; 10. Standard glass rotor flowmeter body; 101. Standard flowmeter mounting connection pipe. Detailed Implementation

[0036] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0037] Example 1

[0038] This embodiment provides a technical solution: a glass rotor flowmeter calibration device, as shown in Figures 1-7, including a calibration and testing base, an up-and-down drive mechanism, a movable adjustment frame, a calibration glass rotor flowmeter body 5, a standard glass rotor flowmeter body 10, and a flowmeter calibration discharge mechanism.

[0039] The calibration and testing base is connected to an external water supply pipe, allowing it to receive water from the external pipe. A vertical drive mechanism is installed on the inner left side of the calibration and testing base, enabling it to move up and down. A movable adjustment frame is installed on the right side of the vertical drive mechanism, allowing it to move up and down via the mechanism. The calibration glass rotor flowmeter body 5 is installed on the upper left side of the calibration and testing base, allowing for calibration. The standard glass rotor flowmeter body 10 is installed on the calibration... On the upper right side of the calibration test base, the standard glass rotor flowmeter body 10 can be placed in a standard position, which facilitates personnel to compare and view the calibration results, making the calibration process more efficient and convenient. The flowmeter calibration discharge mechanism is installed and connected to the middle of the front edge of the calibration test base. The flowmeter calibration discharge mechanism can be stably supported on the calibration test base. The flowmeter calibration discharge mechanism is connected to the calibration glass rotor flowmeter body 5 and the standard glass rotor flowmeter body 10. The flowmeter calibration discharge mechanism can receive the calibration test liquid output from the calibration glass rotor flowmeter body 5 and the standard glass rotor flowmeter body 10.

[0040] As shown in Figures 1, 2, and 7, the calibration and testing base includes a four-hole mounting base plate 1, which can be installed in a designated position using screws. A hollow splitter base 2 is fixedly connected to the upper middle of the four-hole mounting base plate 1, allowing the four-hole mounting base plate 1 to move the hollow splitter base 2. An input connecting pipe 22 is fixedly connected to the right end of the hollow splitter base 2, allowing calibration liquid to be delivered to the hollow splitter base 2 for splitting. A calibration water source delivery pump 21 is installed at the right end of the input connecting pipe 22 using screws, receiving the calibration liquid delivered by the calibration water source delivery pump 21. The calibration water source delivery pump 21 is connected to an external water source pipe, allowing it to draw calibration liquid from the external water source pipe for delivery. A calibration flow meter mounting connecting pipe 51 is fixedly connected to the upper left side of the hollow splitter base 2, allowing the calibration liquid inside the hollow splitter base 2 to be split and delivered to the calibration flow meter. In the installation connecting pipe 51, the right side of the calibration flow meter installation connecting pipe 51 is connected to the standard flow meter installation connecting pipe 101 through the hollow split base 2. The calibration liquid inside the hollow split base 2 can also be transported to the standard flow meter installation connecting pipe 101. The standard flow meter installation connecting pipe 101 is installed with the standard glass rotor flow meter body 10 by screws. The standard flow meter installation connecting pipe 101 can also transport the calibration liquid to the standard glass rotor flow meter body 10 for calibration. The calibration flow meter installation connecting pipe 51 is installed with the calibration glass rotor flow meter body 5 by screws. The calibration liquid inside the calibration flow meter installation connecting pipe 51 can also be transported to the calibration glass rotor flow meter body 5. The flow meter calibration discharge mechanism is fixedly connected to the middle of the front edge of the four-hole mounting base plate 1. The flow meter calibration discharge mechanism can discharge the calibration liquid of the standard glass rotor flow meter body 10 and the calibration glass rotor flow meter body 5 respectively.

[0041] The flow meter calibration discharge mechanism includes a support plate 94. The lower end of the support plate 94 is fixed to a four-hole mounting base plate 1, allowing the support plate 94 to be supported and placed on the four-hole mounting base plate 1. A horizontal panel 9 is fixed to the middle of the upper end of the support plate 94, allowing the horizontal panel 9 to be placed horizontally. A collection discharge pipe 93 is fixedly connected through the middle of the inner side of the horizontal panel 9. The horizontal panel 9 can be discharged through the collection discharge pipe 93 in the middle of its inner side. A standard flow meter discharge pipe 91 is fixedly connected through the lower end of the collection discharge pipe 93, allowing the collection discharge pipe 93 to receive and transport the calibration liquid input from the standard flow meter discharge pipe 91. A corrugated connecting pipe 92 is fixedly connected through the left end of the standard flow meter discharge pipe 91. The standard flow meter discharge pipe 91 can receive the calibration liquid input by the corrugated connecting pipe 92. The lower end of the standard flow meter discharge pipe 91 is connected to the standard glass rotor flow meter body 10 by screws, so that it can be stably placed for calibration comparison. The calibration flow rate can be effectively viewed through the scale on the outside of the standard glass rotor flow meter body 10. The corrugated connecting pipe 92 is in a telescopic state, which facilitates installation and removal. The corrugated connecting pipe 92 is connected to the calibration glass rotor flow meter body 5 by screws. The corrugated connecting pipe 92 can receive and transport the calibration liquid calibrated by the calibration glass rotor flow meter body 5. A concave vertical plate 11 is fixed to the left edge of the four-hole mounting base plate 1, and the concave vertical plate 11 can be supported and placed on the left side of the four-hole mounting base plate 1.

[0042] In use, the calibration and testing base is connected to an external water source pipe. The calibration and testing base can receive water from the external water source pipe for supply. The up-and-down drive mechanism can move up and down on the inner left side of the calibration and testing base. The movable adjustment frame can move up and down through the up-and-down drive mechanism. The calibration glass rotor flowmeter body 5 can be installed and calibrated on the upper left side of the calibration and testing base, and the standard glass rotor flowmeter body 10 can be placed on the upper right side of the calibration and testing base. This facilitates comparison and viewing of calibration results, making it easier to compare with the calibration glass rotor flowmeter body 5 during calibration. This makes calibration comparison more efficient and convenient. The flowmeter calibration discharge mechanism can be stably supported on the calibration and testing base. The flowmeter calibration discharge mechanism can receive the calibration test liquid output from the calibration glass rotor flowmeter body 5 and the standard glass rotor flowmeter body 10. The flowmeter calibration discharge mechanism can transport the liquid to the storage container of the external water source pipe, so that it can be recycled for calibration.

[0043] Example 2

[0044] This embodiment is a further optimization based on Embodiment 1. The parts identical to the aforementioned technical solutions will not be repeated here. As shown in Figures 1, 2, and 4, to better realize this utility model, the following configuration is specifically adopted: The up-down drive mechanism includes a lead screw body 4 and a lead screw motor 42. The lead screw body 4 and the lead screw motor 42 are mounted on the concave vertical plate 11 with screws, allowing for corresponding installation. The internal lead screw of the lead screw body 4 is fixedly connected to the output shaft of the bottom lead screw motor 42. The output shaft of the lead screw motor 42 can drive the internal lead screw of the lead screw body 4 to rotate in both directions. A lead screw slider 41 is installed around the internal lead screw of the lead screw body 4. The internal lead screw of the lead screw body 4 can cause the lead screw slider 41 to move up and down during the rotation of the internal lead screw of the lead screw body 4. A dustproof cloth is installed in the vertical groove of the lead screw body 4 to prevent dust from entering. A movable adjustment frame is installed at the front end of the lead screw slider 41. When the lead screw slider 41 moves up and down, it can drive the movable adjustment frame to move up and down.

[0045] Example 3

[0046] This embodiment is a further optimization based on Embodiment 1. The parts identical to the aforementioned technical solutions will not be repeated here. As shown in Figures 1-6, to better realize this utility model, the following configuration is specifically adopted: The movable adjustment frame includes a screw mounting panel 3, which is mounted on the lead screw slider 41. Thus, the position and height of the screw mounting panel 3 can be changed when the lead screw slider 41 moves up and down. A hollow sleeve 31 is fixedly connected to the middle of the front end of the screw mounting panel 3, allowing the screw mounting panel 3 to change the position and height of the hollow sleeve 31. A movable sleeve rod 34 is sleeved on the inner side of the front end of the hollow sleeve 31, and the movable sleeve rod 34 is limited by an anti-disengagement ring 341. The movable sleeve 34 is connected to the hollow sleeve 31, so that the movable sleeve 34 can be positioned and adjusted in the hollow sleeve 31, and effectively prevents loosening during adjustment. The movable sleeve 34 and the hollow sleeve 31 are fixedly connected by the locking bolt 33. After adjustment, they can be effectively locked and fixed, so that the movable sleeve 34 and the hollow sleeve 31 can be stably connected and placed. The front end of the movable sleeve 34 is fixedly connected to the positioning screw tube 32. When the position of the movable sleeve 34 changes, the position of the positioning screw tube 32 can be changed. The internal thread of the positioning screw tube 32 is rotatably connected to the rotation adjustment mechanism. The rotation adjustment mechanism can rotate in the positioning screw tube 32. By rotating in both directions, it can move back and forth to change the position.

[0047] The rotation adjustment mechanism includes an adjustment screw 7, which is threadedly connected to the positioning screw tube 32, allowing for forward and reverse rotation adjustment and forward and backward movement. A connecting end plate 71 is fixedly connected to the inner end of the adjustment screw 7, which can change the position of the connecting end plate 71 when the adjustment screw 7 moves. A pneumatic adsorption mechanism is fixedly connected to the inner end of the connecting end plate 71, which can change the position of the pneumatic adsorption mechanism to perform pneumatic adsorption.

[0048] The pneumatic adsorption mechanism includes a hollow suction hood 61. A pneumatic connection pipe 6 is fixedly connected to the right end of the hollow suction hood 61. The negative pressure suction force of the pneumatic connection pipe 6 can be transmitted to the hollow suction hood 61. The pneumatic connection pipe 6 is connected to an air pump. The pneumatic connection pipe 6 can generate negative pressure suction force through the air pump. A hollow arc-shaped suction plate is fixedly connected to the inner end of the hollow suction hood 61. The hollow suction hood 61 can pneumatically adsorb and position the calibration glass rotor flowmeter body 5 for use.

[0049] The hollow arc-shaped suction plate includes an arc-shaped return plate 8, with an adsorption cavity 82 inside the arc-shaped return plate 8. The arc-shaped return plate 8 can be positioned and installed through the adsorption cavity 82. An arc-shaped hollow plate 81 is fixedly connected to the inner side of the adsorption cavity 82 at the front end of the arc-shaped return plate 8. The arc-shaped hollow plate 81 can be stably placed in the adsorption cavity 82 of the arc-shaped return plate 8, thus allowing for positioning. The arc-shaped return plate 8 is fixed to the hollow suction cover 61. The arc-shaped return plate 8 can receive the negative pressure suction force inside the hollow suction cover 61, allowing the calibration glass rotor flow meter body 5 to be adsorbed through the fine holes inside the arc-shaped hollow plate 81. When the air pressure disappears, the fixing of the calibration glass rotor flow meter body 5 is loosened, which facilitates installation and disassembly for calibration.

[0050] The outer end of the arc-shaped perforated plate 81 is attached to and adsorbed onto the outer wall of the calibration glass rotor flowmeter body 5, so that it can be adsorbed and fixed accordingly.

[0051] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A calibration device for a glass rotor flowmeter, characterized in that, include: A calibration and testing base is connected to an external water supply pipe; an upper and lower drive mechanism is installed on the inner side of the left end of the calibration and testing base. The upper and lower drive mechanism includes a lead screw body (4) and a lead screw motor (42). The lead screw body (4) and the lead screw motor (42) are mounted on a concave vertical plate (11) by screws. The internal lead screw of the lead screw body (4) is fixedly connected to the output shaft of the bottom lead screw motor (42). A lead screw slider (41) is installed around the internal lead screw of the lead screw body (4). A dustproof cloth is installed in the moving vertical groove of the lead screw body (4). A moving part is installed at the front end of the lead screw slider (41). A movable adjustment frame; a mobile adjustment frame, the movable adjustment frame being installed and connected to the right end of the upper and lower drive mechanism; a calibration glass rotor flowmeter body (5), the calibration glass rotor flowmeter body (5) being installed and connected to the upper left side of the calibration and testing base; a standard glass rotor flowmeter body (10), the standard glass rotor flowmeter body (10) being installed and connected to the upper right side of the calibration and testing base; a flowmeter calibration discharge mechanism, the flowmeter calibration discharge mechanism being installed and connected to the middle of the front edge of the calibration and testing base, the flowmeter calibration discharge mechanism being connected to the calibration glass rotor flowmeter body (5) and the standard glass rotor flowmeter body (10).

2. The glass rotor flowmeter calibration device according to claim 1, characterized in that: The calibration and testing base includes a four-hole mounting base plate (1). A hollow split base (2) is fixedly connected to the middle of the upper end of the four-hole mounting base plate (1). An input connecting pipe (22) is fixedly connected to the right end of the hollow split base (2). A calibration water source delivery pump (21) is installed on the right end of the input connecting pipe (22) by screws. The calibration water source delivery pump (21) is connected to an external water source pipe. A calibration flow meter mounting connecting pipe is fixedly connected to the left side of the upper end of the hollow split base (2). (51) The standard flow meter installation connection pipe (101) is fixedly connected to the right side of the calibration flow meter installation connection pipe (51) on the hollow flow split base (2). The standard flow meter installation connection pipe (101) is fitted with a standard glass rotor flow meter body (10) by screws. The calibration flow meter installation connection pipe (51) is fitted with a calibration glass rotor flow meter body (5) by screws. The flow meter calibration discharge mechanism is fixedly connected to the middle of the front edge of the four-hole mounting base plate (1).

3. The glass rotor flowmeter calibration device according to claim 2, characterized in that: The flow meter calibration discharge mechanism includes a support plate (94), the lower end of which is fixed to a four-hole mounting base plate (1). A horizontal panel (9) is fixed to the middle of the upper end of the support plate (94). A collection discharge pipe (93) is fixed through the middle of the inner side of the horizontal panel (9). A standard flow meter discharge pipe (91) is fixed through the lower end of the collection discharge pipe (93). A corrugated connecting pipe (92) is fixed through the left end of the standard flow meter discharge pipe (91). The lower end of the standard flow meter discharge pipe (91) is connected to the body of the standard glass rotor flow meter (10) by screws. The corrugated connecting pipe (92) is connected to the body of the calibration glass rotor flow meter (5) by screws. A concave plate (11) is fixed to the left edge of the four-hole mounting base plate (1).

4. The glass rotor flowmeter calibration device according to claim 1, characterized in that: The movable adjustment frame includes a screw mounting panel (3), a hollow sleeve (31) is fixedly connected to the middle of the front end of the screw mounting panel (3), a movable sleeve rod (34) is sleeved on the inner side of the front end of the hollow sleeve (31), the movable sleeve rod (34) is limited and sleeved in the hollow sleeve (31) by an anti-disengagement ring (341), the movable sleeve rod (34) and the hollow sleeve (31) are fixedly connected by a locking bolt (33), a positioning screw tube (32) is fixedly connected to the front end of the movable sleeve rod (34), and a rotation adjustment mechanism is rotatably connected to the internal thread of the positioning screw tube (32).

5. The glass rotor flowmeter calibration device according to claim 4, characterized in that: The rotation adjustment mechanism includes an adjustment rotation screw (7), which is threadedly rotatably connected to a positioning screw tube (32). The inner end of the adjustment rotation screw (7) is fixedly connected to a connecting end plate (71), and the inner end of the connecting end plate (71) is fixedly connected to a pneumatic adsorption mechanism.

6. The glass rotor flowmeter calibration device according to claim 5, characterized in that: The pneumatic adsorption mechanism includes a hollow suction hood (61), with a pneumatic connecting pipe (6) fixedly connected to the right end of the hollow suction hood (61), the pneumatic connecting pipe (6) being connected to an air pump, and a hollow arc-shaped suction plate fixedly connected to the inner end of the hollow suction hood (61).

7. The glass rotor flowmeter calibration device according to claim 6, characterized in that: The hollow arc-shaped suction plate includes an arc-shaped return plate (8), and an adsorption groove (82) is opened inside the arc-shaped return plate (8). An arc-shaped hollow plate (81) is fixedly connected to the inner side of the adsorption groove (82) at the front end of the arc-shaped return plate (8). The arc-shaped return plate (8) is fixedly connected to the hollow suction cover (61).

8. The glass rotor flowmeter calibration device according to claim 7, characterized in that: The outer end of the arc-shaped perforated plate (81) is attached to and adsorbed on the outer wall of the calibration glass rotor flowmeter body (5).

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