Double-cone flow meter

Abstract

The utility model relates to a biconical flowmeter which comprises a communicating pipe and a cone assembly installed in the communicating pipe, a scraping column is arranged on the inner wall of the communicating pipe in a sliding mode, the scraping column is arranged on the side of the cone assembly, and the communicating pipe is provided with a rotation driving mechanism used for driving the scraping column to conduct circular motion around the axis of the communicating pipe. The scraping columns can be driven by the rotating driving mechanism to scrape away deposits on the inner wall of the communicating pipe, so that impact between fluid and adherends is reduced, and it is guaranteed that the flow speed of the fluid can be kept uniform when the fluid flows through the cone assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of flow meters, in particular to a double-cone flow meter. Background Art

[0002] A double-cone flow meter (also known as a Venturi cone flow meter or a double-cone flow meter) is an instrument used to measure the flow rate of gases or liquids, and its design purpose is to achieve accurate flow measurement by changing the flow characteristics of the fluid in the pipeline.

[0003] Currently, if the flow meter is used in a working environment with a slow flow rate of the fluid, scale and other impurities remaining in the fluid are likely to precipitate on the inner walls of the connecting pipes on both sides of the flow meter. When the fluid passes through this section of the connecting pipe with adhered impurities, an impact will occur between the fluid and the adherents, resulting in a change in the flow rate of the fluid after the impact. The problem caused is that the accuracy of the detection result of the flow meter will decrease. Summary of the Utility Model

[0004] The utility model provides a double-cone flow meter, which solves the above problems existing in the prior art during use.

[0005] The technical solution of the utility model is realized as follows: A double-cone flow meter includes a connecting pipe and a cone assembly installed in the connecting pipe. A scraping column is slidably arranged on the inner wall of the connecting pipe. The scraping column is arranged beside the cone assembly. A rotation driving mechanism is arranged on the connecting pipe for driving the scraping column to perform circular motion around the axis of the connecting pipe.

[0006] The utility model is further arranged as follows: A self-rotating ring is sleeved on the inner wall of the connecting pipe. The scraping column extends from the self-rotating ring towards the cone assembly. A sliding member is fixedly arranged at the end of the scraping column close to the self-rotating ring. A sliding groove for the sliding member to slide is opened on the self-rotating ring. The sliding groove is perpendicular to the axis of the connecting pipe. An elastic pushing member is arranged in the sliding groove for pushing the scraping column to slide in a direction away from the axis of the connecting pipe.

[0007] The utility model is further arranged as follows: A receiving groove for receiving the scraping column is opened on the inner wall of the connecting pipe. The cross-section of the receiving groove is fan-shaped. An anti-silting plate is arranged in the receiving groove. One end of the anti-silting plate is rotatably connected to the inner wall of the receiving groove and the other end extends to abut against the inner wall of the receiving groove. A flipping mechanism for flipping the anti-silting plate outwards and a limiting mechanism for enabling the anti-silting plate to only swing in the receiving groove are arranged in the receiving groove.

[0008] The utility model is further arranged as follows: An annular installation groove is opened on the inner wall of the connecting pipe. The self-rotating ring is rotatably connected in the installation groove.

[0009] The present utility model is further configured as follows: A gear ring is fixedly connected to the outer side wall of the rotating ring. The rotation driving mechanism includes a motor and a gear. A working chamber is fixedly provided on the outer side wall of the communicating pipe. An operation port is formed on the side wall of the communicating pipe, and the operation port is used to communicate the working chamber with the installation groove. The gear is rotatably arranged in the working chamber and meshes with the gear ring through the operation port. The motor is fixedly arranged on the outer side wall of the working chamber, and its output shaft penetrates into the working chamber and is connected to the gear.

[0010] The present utility model is further configured as follows: The anti-silting plate is a magnetic plate. The flipping mechanism includes a magnetic block, and the magnetic block is embedded in the storage groove and used to mutually repel the anti-silting plate.

[0011] The present utility model is further configured as follows: The limiting mechanism includes a limiting edge, and the limiting edge is arranged at the junction of the storage groove and the inner wall of the communicating pipe and is far away from the hinge of the anti-silting plate and the storage groove.

[0012] In summary, the beneficial effects of the present utility model are as follows:

[0013] 1. Through this structure, the scraping column can scrape the silt on the inner wall of the communicating pipe under the drive of the rotation driving mechanism, thereby reducing the impact between the fluid and the adherent, and ensuring that the fluid can maintain a uniform flow rate when flowing through the cone assembly.

[0014] 2. The elastic pushing member can be used to make the scraping column closely adhere to the inner wall of the communicating pipe, thereby improving the scraping efficiency of the scraping column on the silt.

[0015] 3. The storage groove can store the scraping column when the scraping column does not need to work, preventing the scraping column from generating too much resistance to the flow of the fluid.

[0016] 4. After the scraping column leaves the storage groove, the anti-silting plate can be turned outwards under the action of the magnetic block. The advantage of this structure is that when there is silt pushing in the storage groove, the anti-silting plate can push the silt out of the storage groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2Explosion schematic diagram of the structure of the self-rotating ring in the present utility model;

[0020] Figure 3 Three-dimensional structure display diagram of the scraping column in the present utility model;

[0021] Figure 4 Schematic cross-sectional structure diagram of the present utility model with the self-rotating ring and the scraping column removed;

[0022] Figure 5 is Figure 1 Partial enlarged schematic diagram at position A in

[0023] Figure 6 is Figure 2 Partial enlarged schematic diagram at position B in

[0024] Figure 7 is Figure 4 Partial enlarged schematic diagram at position C in

[0025] Reference numerals in the figure: 11 connecting pipe, 111 receiving groove, 112 anti-silting plate, 113 installation groove, 114 working chamber, 115 operation port, 116 magnet, 117 limiting edge, 12 cone assembly, 21 self-rotating ring, 211 sliding groove, 212 gear ring, 22 scraping column, 23 sliding member, 24 elastic pushing member, 25 motor, 26 gear. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying Figures 1-7 drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment:

[0028] As Figures 1 to 7 shown, the present utility model discloses a double-cone flowmeter, which includes a connecting pipe 11 and a cone assembly 12 installed in the connecting pipe 11. The installation method of the cone assembly 12 is the same as that in the prior art, so it will not be elaborated herein. A self-rotating ring 21 is sleeved on the inner wall of the connecting pipe 11, and the self-rotating ring 21 is beside the cone assembly 12. At the same time, a scraping column 22 is slidably arranged on the inner wall of the connecting pipe 11, and the scraping column 22 extends from the self-rotating ring 21 towards the cone assembly 12, and as Figure 2 , Figure 3 and Figure 6As shown, a sliding member 23 is fixedly provided at the end of the scraping column 22 close to the rotating ring 21. Correspondingly, a sliding groove 211 for the sliding member 23 to slide is formed on the rotating ring 21. The sliding groove 211 is perpendicular to the axis of the communicating pipe 11. The scraping column 22 can approach or move away from the axis of the communicating pipe 11 according to the sliding of the sliding member 23 in the sliding groove 211. In addition, an elastic pushing member 24 is arranged in the sliding groove 211. The elastic pushing member 24 is used to push the scraping column 22 to slide in the direction away from the axis of the communicating pipe 11. The elastic pushing member 24 can be a spring.

[0029] A rotating driving mechanism for driving the scraping column 22 to perform a circular motion around the axis of the communicating pipe 11 is arranged on the communicating pipe 11. Specifically:

[0030] An annular installation groove 113 is formed on the inner wall of the communicating pipe 11. The rotating ring 21 is rotatably connected in the installation groove 113. And a gear ring 212 is fixedly connected to the outer side wall of the rotating ring 21. A working chamber 114 is fixedly arranged on the outer side wall of the communicating pipe 11. And an operation port 115 is formed on the side wall of the communicating pipe 11. In this structure, the operation port 115 is used to communicate the working chamber 114 with the installation groove 113 and expose part of the gear ring 212 in the operation port 115. The rotating driving mechanism specifically includes a motor 25 and a gear 26. In this structure, the gear 26 is rotatably arranged in the working chamber 114 and meshes with the gear ring 212 through the operation port 115. And the motor 25 is fixedly arranged on the outer side wall of the working chamber 114 and its output shaft penetrates into the working chamber 114 to be connected with the gear 26.

[0031] Through this structure, when the motor 25 is started, the gear 26 can drive the rotating ring 21 fixedly connected to the gear ring 212 to rotate, and thereby make the scraping column 22 installed on the rotating ring 21 perform a circular motion centered on the axis of the communicating pipe 11, and thereby scrape the sediment along the inner wall of the communicating pipe 11. At the same time, the elastic pushing member 24 can make the scraping column 22 closely adhere to the inner wall of the communicating pipe 11, and thereby improve the scraping force of the scraping column 22 on the sediment.

[0032] A storage groove 111 for storing the scraping column 22 is formed on the inner wall of the communicating pipe 11. The cross section of the storage groove 111 is fan-shaped. An anti-sedimentation plate 112 is arranged in the storage groove 111. As Figure 7 shown, one end of the anti-sedimentation plate 112 is rotatably connected to the inner wall of the storage groove 111 and the other end extends to abut against the inner wall of the storage groove 111.

[0033] A turning mechanism for turning the anti-silting plate 112 outwards and a limiting mechanism for enabling the anti-silting plate 112 to only swing within the receiving groove 111 are provided inside the receiving groove 111. Specifically: The anti-silting plate 112 is a magnetic plate. The turning mechanism includes a magnetic block 116, which is embedded inside the receiving groove 111 and used to mutually repel the anti-silting plate 112. The limiting mechanism includes a limiting edge 117, which is provided at the junction of the receiving groove 111 and the inner wall of the connecting pipe 11 and is far from the hinge of the anti-silting plate 112 and the receiving groove 111.

[0034] The working principle of this structure is as follows: When the scraping column 22 does not need to work, the scraping column 22 can be rotated to the receiving groove 111. At this time, affected by the elastic pushing member 24, the scraping column 22 will squeeze into the receiving groove 111 while pushing the anti-silting plate 112 against the inner wall of the receiving groove 111. When the scraping column 22 needs to work, the scraping column 22 will gradually withdraw from the receiving groove 111 during the rotation process. At the same time, the anti-silting plate 112 will turn outwards again until the limiting edge 117 blocks the anti-silting plate 112 inside the receiving groove 111. During this process, if there is silt adhering to the inner wall of the receiving groove 111, the anti-silting plate 112 can push out this silt from the receiving groove 111.

[0035] At the same time, it should be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A double-cone flowmeter, comprising a connecting pipe (11) and a cone assembly (12) installed in the connecting pipe (11), characterized in that: A scraping column (22) is slidably arranged on the inner wall of the communicating pipe (11). The scraping column (22) is arranged beside the cone assembly (12). A rotation driving mechanism is arranged on the communicating pipe (11) for driving the scraping column (22) to perform circular motion around the axis of the communicating pipe (11).

2. The double-cone flowmeter according to claim 1, wherein: A self-rotating ring (21) is sleeved on the inner wall of the communicating pipe (11). The scraping column (22) extends from the self-rotating ring (21) towards the cone assembly (12). A sliding member (23) is fixedly arranged at the end of the scraping column (22) close to the self-rotating ring (21). A sliding groove (211) for the sliding member (23) to slide is formed on the self-rotating ring (21). The sliding groove (211) is perpendicular to the axis of the communicating pipe (11). An elastic pushing member (24) is arranged in the sliding groove (211) for pushing the scraping column (22) to slide in a direction away from the axis of the communicating pipe (11).

3. A double-cone flowmeter according to claim 2, characterized in that: A receiving groove (111) for receiving the scraping column (22) is formed on the inner wall of the communicating pipe (11). The cross-section of the receiving groove (111) is fan-shaped. An anti-silting plate (112) is arranged in the receiving groove (111). One end of the anti-silting plate (112) is rotatably connected to the inner wall of the receiving groove (111), and the other end extends to abut against the inner wall of the receiving groove (111). A flipping mechanism for flipping the anti-silting plate (112) outwards and a limiting mechanism for enabling the anti-silting plate (112) to only swing in the receiving groove (111) are arranged in the receiving groove (111).

4. A double-cone flowmeter according to claim 3, characterized in that: An annular installation groove (113) is formed on the inner wall of the communicating pipe (11). The self-rotating ring (21) is rotatably connected in the installation groove (113).

5. A double-cone flowmeter according to claim 4, characterized in that: A gear ring (212) is fixedly connected to the outer side wall of the self-rotating ring (21). The rotation driving mechanism includes a motor (25) and a gear (26). A working chamber (114) is fixedly arranged on the outer side wall of the communicating pipe (11). An operation port (115) is formed on the side wall of the communicating pipe (11) for communicating the working chamber (114) with the installation groove (113). The gear (26) is rotatably arranged in the working chamber (114) and meshes with the gear ring (212) through the operation port (115). The motor (25) is fixedly arranged on the outer side wall of the working chamber (114), and its output shaft penetrates into the working chamber (114) and is connected to the gear (26).

6. The double-cone flowmeter according to claim 5, wherein: The anti-silting plate (112) is a magnetic plate. The flipping mechanism includes a magnetic block (116). The magnetic block (116) is embedded in the receiving groove (111) and is used to mutually repel the anti-silting plate (112).

7. A double-cone flowmeter according to claim 6, characterized in that: The limiting mechanism includes a limiting edge (117). The limiting edge (117) is arranged at the junction of the receiving groove (111) and the inner wall of the communicating pipe (11) and is far away from the hinge of the anti-silting plate (112) and the receiving groove (111).

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