Wedge type flowmeter

Abstract

The utility model belongs to the technical field of wedge type flow meters, and particularly relates to a wedge type flow meter which comprises a pipeline, a mounting plate and a wedge-shaped block, connecting flanges are arranged at the two ends of the pipeline, pressure tapping pipes are vertically arranged on the two sides of the upper surface of the pipeline, the two pressure tapping pipes are communicated with the interior of the pipeline, a thickening area is arranged on the surface of the pipeline, and the wedge-shaped block is arranged in the thickening area. The thickening area is arranged between the two pressure tapping pipes, a boss is arranged on the upper surface of the thickening area, a stepped hole is formed in the surface of the boss, the bottom of the stepped hole is communicated with a pipeline, and the wedge block and the mounting plate are mounted through matching of a convex strip and a groove of a T-shaped structure, so that the connecting strength is guaranteed; when the wedge-shaped block and the wedge-shaped block are installed, the limiting rods on the two sides can be controlled to rotate at the same time by controlling a button on the top, so that the limiting rods enter the positioning arc grooves downwards, the wedge-shaped block cannot slide, stable installation of the wedge-shaped block is achieved, and convenience during installation or disassembly can be improved by synchronously controlling the limiting rods on the two sides.

Description

Technical Field

[0001] The utility model belongs to the technical field of wedge flowmeters, and particularly relates to a wedge flowmeter. Background Art

[0002] The wedge flowmeter is an excellent differential pressure flowmeter, which can allow liquids containing suspended particles, viscous liquids, gases containing moisture or impurities to pass through smoothly without retention, adhesion, or precipitation. It has the characteristics of high precision, wide range, extreme wear resistance, and anti-blocking. It can be applied to general gases and liquids, and is also suitable for the flow measurement of high-viscosity slurries, high-concentration, crystalline mixtures, dirty liquids, high-dust gases, and two-phase fluids such as gas-liquid, gas-solid, and liquid-solid.

[0003] In the existing wedge flowmeter, the wedge block inside is an integral structure with the pipeline main body. During use, due to the impact and corrosion of the internal fluid, the surface of the wedge block is damaged after long-term use, which will then affect the measurement structure. At this time, only the wedge block and the pipeline can be replaced together, which increases the use cost. A wedge flowmeter is disclosed in the prior art (Patent Publication No.: CN217687335U), in which a detachable connecting plate is installed on the pipeline surface, and a wedge block is installed at the bottom of the connecting plate to realize the replacement of the wedge block. The wedge block and the connecting plate are installed through the cooperation of a clamping groove and a clamping strip, and are fixed by convex plates and fastening bolts on both sides to ensure the stable installation of the shoe-shaped block and the connecting plate.

[0004] However, the convex plate and the fastening bolt will sink into the convex shell, which causes the convex plate and the bolt to be immersed in the fluid, and then may be corroded, resulting in the phenomenon that they cannot be disassembled during replacement. Content of the Utility Model

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a wedge flowmeter, which can achieve the separate replacement of the wedge block and ensure the stability of the wedge block after replacement.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A wedge flowmeter includes a pipeline, a mounting plate and a wedge block. Connecting flanges are provided at both ends of the pipeline. Pressure tapping pipes are vertically arranged on both sides of the upper surface of the pipeline, and both of the pressure tapping pipes communicate with the inside of the pipeline. A thickening area is arranged on the surface of the pipeline, and the thickening area is located between the two pressure tapping pipes. A boss is arranged on the upper surface of the thickening area, and a stepped hole is formed on the surface of the boss. The bottom of the stepped hole communicates with the pipeline. The mounting plate is installed on the upper surface of the boss through bolts, and the upper surfaces of the mounting plate and the boss are flush. An extension block is arranged at the bottom of the mounting plate, and the extension block is adapted to the internal dimension of the lower hole of the stepped hole. Grooves are symmetrically arranged on the lower surface of the extension block. The wedge block is located below the extension block. Protruding strips are symmetrically arranged on the upper surface of the wedge block, and the protruding strips are adapted to the internal dimension of the grooves. Positioning arc grooves are symmetrically formed on both sides of the top of the wedge block, and the positioning arc grooves are located between the two protruding strips. Concave arc grooves are symmetrically formed at the bottom of both sides of the extension block, and the centers of the positioning arc grooves and the concave arc grooves coincide. A rotating shaft is rotatably installed inside the extension block, and the axis of rotation of the rotating shaft coincides with the center of the concave arc groove. Limiting rods are symmetrically arranged at both ends of the rotating shaft, and the limiting rods are located inside the concave arc grooves.

[0008] Further, a gear is arranged at the center inside the rotating shaft.

[0009] Further, mounting holes are formed on the upper surface of the mounting plate, and buttons vertically slide through the mounting holes. A toothed rod is arranged at the bottom of the button, and the toothed rod meshes with the gear.

[0010] Further, a spring is sleeved on the surface of the toothed rod. The spring is located inside the mounting hole, and the top of the spring contacts the lower surface of the button.

[0011] Further, lifting rings are symmetrically arranged on the upper surface of the mounting plate.

[0012] Further, a sealing ring is arranged inside the stepped hole, and the lower surface of the mounting plate contacts the sealing ring.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The installation between the wedge block and the mounting plate is realized through the cooperation of the protruding strips and grooves with a T-shaped structure to ensure the connection strength. When installing the two, the rotation of the limiting rods on both sides can be controlled simultaneously by controlling the button at the top, so that the limiting rods move downward into the positioning arc grooves, making the wedge block unable to slide, realizing the stable installation of the wedge block. Synchronously controlling the limiting rods on both sides can improve the convenience during installation or disassembly. When the wedge block is installed inside the pipeline, the wedge block is limited by the side wall of the stepped hole to further limit the wedge block and improve the installation stability. Description of the Drawings

[0014] Figure 1Schematic three-dimensional structure diagram of the present utility model;

[0015] Figure 2 Schematic cross-sectional structure diagram of the thickened area of the present utility model;

[0016] Figure 3 Schematic structure diagram of the extension block and wedge block of the present utility model;

[0017] Figure 4 Schematic cross-sectional structure diagram of the mounting plate and extension block of the present utility model;

[0018] Figure 5 For the present utility model Figure 4 Enlarged three-dimensional structure diagram of area A.

[0019] In the attached drawings, the components represented by each reference numeral are listed as follows:

[0020] 1. Pipeline; 2. Pressure tapping pipe; 3. Thickened area; 4. Boss; 5. Step hole; 6. Sealing ring; 7. Mounting plate; 8. Extension block; 9. Wedge block; 10. Rib; 11. Positioning arc groove; 12. Groove; 13. Suspension ring; 14. Concave arc groove; 15. Rotating shaft; 16. Limiting rod; 17. Gear; 18. Mounting hole; 19. Button; 20. Rack; 21. Spring. Detailed implementation manners

[0021] In order to make the purpose and advantages of the present utility model clearer, the present utility model will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present utility model, and does not strictly limit the specific protection scope claimed by the present utility model.

[0022] Please refer to Figures 1 - 4As shown in the figure, a wedge flowmeter includes a pipeline 1, a mounting plate 7, and a wedge block 9. Both ends of the pipeline 1 are provided with connecting flanges. On both sides of the upper surface of the pipeline 1, pressure tapping pipes 2 are vertically arranged. Connect the two pressure tapping pipes 2 to the corresponding equipment. Both pressure tapping pipes 2 communicate with the inside of the pipeline 1. A thickening area 3 is arranged on the surface of the pipeline 1. The thickening area 3 is located between the two pressure tapping pipes 2. A boss 4 is arranged on the upper surface of the thickening area 3. A stepped hole 5 is formed on the surface of the boss 4. The upper section of the stepped hole 5 is larger than the lower section. The bottom of the stepped hole 5 communicates with the pipeline 1. The mounting plate 7 is installed on the upper surface of the boss 4 through bolts. The upper surfaces of the mounting plate 7 and the boss 4 are flush. A sealing ring 6 is arranged inside the stepped hole 5. The lower surface of the mounting plate 7 contacts the sealing ring 6. After being installed in place, the mounting plate 7 will squeeze the sealing ring 6 to increase the sealing performance of the connection and prevent fluid leakage. An extension block 8 is arranged at the bottom of the mounting plate 7. The extension block 8 is adapted to the internal size of the lower hole of the stepped hole 5. After being installed in place, the extension block 8 can be limited by the lower hole. Grooves 12 are symmetrically arranged on the lower surface of the extension block 8. The wedge block 9 is located below the extension block 8. Protrusions 10 are symmetrically arranged on the upper surface of the wedge block 9. The protrusions 10 are adapted to the internal size of the grooves 12, so that the wedge block 9 and the extension block 8 are stably installed, and after being installed in place, both sides of the wedge block 9 are also limited by the inner wall of the stepped hole 5.

[0023] Wherein, positioning arc grooves 11 are symmetrically formed on both sides of the top of the wedge block 9. The positioning arc grooves 11 are located between the two protrusions 10. Concave arc grooves 14 are symmetrically formed at the bottom of both sides of the extension block 8. The positioning arc grooves 11 and the concave arc grooves 14 have the same center of the circle. The two are combined into a complete circle, and the center of the circle is located inside the concave arc grooves 14. A rotating shaft 15 is rotatably installed inside the extension block 8. The axis of the rotating shaft 15 coincides with the center of the concave arc grooves 14. Limit rods 16 are symmetrically arranged at both ends of the rotating shaft 15. The limit rods 16 are located inside the concave arc grooves 14. Controlling the rotation of the rotating shaft 15 can drive the rotation of the limit rods 16 to adjust the orientation of the limit rods 16. When the limit rods 16 are vertically downward, their ends are located inside the positioning arc grooves 11, so that the wedge block 9 and the extension block 8 cannot slide, ensuring the stability of their installation and facilitating their insertion into the stepped hole 5 together.

[0024] Please refer to Figure 4 and Figure 5 As shown in the figure, a gear 17 is arranged at the center of the rotating shaft 15. A cavity is formed at the center position of the lower surface of the extension block 8 for installing the gear 17. After being docked with the wedge block 9 in place, the cavity is sealed to protect the internal gear 17. Mounting holes 18 are formed on the upper surface of the mounting plate 7. A button 19 vertically slides through the mounting holes 18. A toothed rod 20 is arranged at the bottom of the button 19. The toothed rod 20 meshes with the gear 17. Pressing the button 19 can drive the rotation of the rotating shaft 15 through the cooperation of the gear 17 and the toothed rod 20.

[0025] Among them, a spring 21 is sleeved on the surface of the rack bar 20. The spring 21 is placed inside the mounting hole 18. The top of the spring 21 is in contact with the lower surface of the button 19. By using the elastic force of the spring 21, when not under force, the button 19 is placed at the uppermost position of the stroke, and then the limiting rod 16 is vertically downward. Therefore, when installing or disassembling, the button 19 can be pressed to drive the limiting rod 16 to rotate into the inner concave arc groove 14.

[0026] Please refer to Figure 3 and Figure 4 As shown, lifting rings 13 are symmetrically arranged on the upper surface of the mounting plate 7 to facilitate the disassembly of the mounting plate 7.

[0027] The working principle of the present utility model is as follows: The mounting plate 7 is installed with the boss 4 through bolts on both sides, and the mounting plate 7 is pressed downward to increase the pressure on the sealing ring 6, causing the sealing ring 6 to deform and improving the sealing performance. After the installation is in place, both ends of the convex strip 10 are limited by the inner walls on both sides of the stepped hole 5 to ensure the stability of the wedge block 9. When not under external force, due to the existence of the spring 21, the button 19 is placed at the uppermost position of the stroke, and then through the cooperation of the rack bar 20 and the gear 17, the limiting rod 16 is in a vertically downward state, so that the end enters the positioning arc groove 11 to realize the limitation of the wedge block 9. When replacement is needed, the bolts on both sides can be removed, and the mounting plate 7 can be taken out through the lifting rings 13 to drive the wedge block 9 at the bottom out. Then, the button 19 is pressed downward, and the rotation of the rotating shaft 15 is driven by the meshing of the rack bar 20 and the gear 17, so that the limiting rod 16 rotates and is placed inside the inner concave arc groove 14, not coinciding with the positioning arc groove 11. At this time, the wedge block 9 can be slid to one side, so that the wedge block 9 is disengaged from the cooperation with the extension block 8. After replacement, the wedge block 9 is preliminarily limited through the cooperation of the limiting rod 16 and the positioning arc groove 11 to ensure the accuracy during installation, and the rotation control of the limiting rods 16 on both sides is convenient and fast.

[0028] The above is only the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. The structures, devices, and operation methods not specifically described and explained in the present utility model, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A wedge-type flowmeter, comprising a pipeline (1), a mounting plate (7) and a wedge block (9), wherein both ends of the pipeline (1) are provided with connecting flanges, and both sides of the upper surface of the pipeline (1) are vertically provided with pressure-taking pipes (2), and the two pressure-taking pipes (2) are connected to the inside of the pipeline (1), characterized in that: The surface of the pipeline (1) is provided with a thickened area (3), the thickened area (3) is placed between the two pressure-taking pipes (2), the upper surface of the thickened area (3) is provided with a boss (4), the surface of the boss (4) is provided with a step hole (5), the bottom of the step hole (5) is connected with the pipeline (1), the mounting plate (7) is mounted on the upper surface of the boss (4) by bolts, the mounting plate (7) and the upper surface of the boss (4) are flush, the bottom of the mounting plate (7) is provided with an extension block (8), the extension block (8) is adapted to the internal size of the hole below the step hole (5), the lower surface of the extension block (8) is symmetrically provided with grooves (12), the wedge block (9) is placed below the extension block (8), the wedge The upper surface of the wedge block (9) is symmetrically provided with convex strips (10), and the inner dimensions of the convex strips (10) and the concave grooves (12) are adapted to each other. Positioning arc grooves (11) are symmetrically provided on both sides of the top of the wedge block (9), and the positioning arc grooves (11) are arranged between the two convex strips (10). The bottoms of the two sides of the extension block (8) are symmetrically provided with concave arc grooves (14), and the centers of the positioning arc grooves (11) and the concave arc grooves (14) coincide with each other. A rotating shaft (15) is rotatably installed inside the extension block (8), and the axis of the rotating shaft (15) coincides with the center of the concave arc groove (14). Limiting rods (16) are symmetrically provided at both ends of the rotating shaft (15), and the limiting rods (16) are arranged inside the concave arc groove (14).

2. A wedge-type flowmeter according to claim 1, characterized in that: A gear (17) is arranged at the inner center of the rotating shaft (15).

3. A wedge-type flowmeter according to claim 2, characterized in that: The upper surface of the mounting plate (7) is provided with a mounting hole (18), a button (19) is vertically slidably penetrated inside the mounting hole (18), a gear rod (20) is provided at the bottom of the button (19), and the gear rod (20) is meshed with the gear (17).

4. A wedge-type flowmeter according to claim 3, characterized in that: A spring (21) is sleeved on the surface of the gear rod (20), and the spring (21) is placed inside the mounting hole (18), and the top of the spring (21) is in contact with the lower surface of the button (19).

5. A wedge-type flowmeter according to claim 1, characterized in that: The mounting plate (7) is symmetrically provided with lifting rings (13).

6. A wedge-type flowmeter according to claim 1, characterized in that: A sealing ring (6) is arranged inside the step hole (5), and the lower surface of the mounting plate (7) is in contact with the sealing ring (6).

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