An integrally formed positive displacement flowmeter

Abstract

The utility model discloses an integrated volumetric flowmeter relates to flowmeter equipment technical field, including flowmeter main part, first connecting pipe, second connecting pipe, protective housing no.

Description

Technical Field

[0001] This utility model relates to the field of flow meter equipment technology, specifically an integrally molded volumetric flow meter. Background Technology

[0002] Positive displacement flow meters are the most commonly used type of flow meter. They are instruments that directly accumulate flow rate based on the volume of the discharged fluid. Let the fixed standard volume of the measuring chamber be V, and the fixed standard volume of fluid discharged through the flow meter within a certain time interval be n. Then the total volume Q of the measured fluid is Q = nV. By using a counter or other components to measure the number of revolutions n of the rotor assembly through a transmission mechanism, the flow rate Q of the measured fluid can be displayed.

[0003] However, existing one-piece volumetric flow meters have significant shortcomings in pipeline connections during practical applications. When the inlet and outlet pipes are fixed to external pipelines using flanges and bolts, the exposed bolts are susceptible to corrosion from the fluid environment (such as humid or corrosive media), leading to rust and damage. This not only increases maintenance costs and frequency but also affects connection stability due to bolt failure. Furthermore, the sealing structure of a single flange connection is relatively simple, and in complex industrial fluid transmission scenarios, it is prone to leaks due to inadequate sealing. This results in resource waste and potential safety hazards (such as leaks of flammable or explosive fluids), hindering the application of volumetric flow meters in scenarios requiring high precision and reliability. Therefore, those skilled in the art have provided a one-piece volumetric flow meter to address the problems mentioned in the background. Utility Model Content

[0004] The purpose of this invention is to provide an integrally molded volumetric flow meter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An integrally molded volumetric flow meter includes a flow meter body, a first connecting pipe, a second connecting pipe, a first protective shell, and a second protective shell. An inlet pipe is fixedly connected and communicates with one side of the flow meter body, and an outlet pipe is fixedly connected and communicates with the other side of the flow meter body. A fixed flange is fixedly connected to the end of both the inlet and outlet pipes away from the flow meter body. A first connecting pipe is located to the left of the inlet pipe, and a second connecting pipe is located to the right of the outlet pipe. A connecting flange is fixedly connected to one end of both the first and second connecting pipes, with the connecting flange corresponding to the fixed flange. A first protective shell is provided on the outer wall of both the first and second connecting pipes, and the first protective shell is slidably connected to the first and second connecting pipes. A threaded cylinder is provided on one side of each protective shell, and the threaded cylinder is fixedly connected to the first protective shell.

[0007] As a further embodiment of this utility model: a second protective shell is provided on the outer wall of both the inlet pipe and the outlet pipe, wherein the second protective shell is slidably connected to the inlet pipe and the outlet pipe, and a threaded groove is provided on one side of the second protective shell, wherein the threaded cylinder is threadedly connected in the threaded groove.

[0008] As a further embodiment of this utility model: the connecting flange and the fixed flange are located inside the first protective shell and the second protective shell. Several sets of limiting plates are fixedly connected to the outer walls of the inlet pipe and the outlet pipe. Several sets of limiting grooves are opened on the second protective shell, wherein the limiting plates are stuck in the limiting grooves.

[0009] As a further improvement of this utility model: both the connecting flange and the fixed flange are provided with several sets of bolt holes, and each bolt hole is provided with a fixing bolt, wherein the fixing bolt can fix the connecting flange and the fixed flange together.

[0010] As a further improvement of this utility model: both the connecting flange and the fixed flange have annular grooves on one side, and a sealing ring is fitted inside the annular grooves.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Double sealing enhancement: Multi-level sealing is achieved by bonding a sealing ring and a protective shell. The sealing ring fills the gap between the flanges to block fluid leakage. After the protective shell is put on, the inner wall is tightly bonded to the flange, further blocking the channels for external air and impurities to seep in. Compared with the traditional single flange seal, this greatly improves the sealing performance of the pipeline connection and reduces the risk of fluid leakage.

[0013] 2. Upgraded component protection: Protective shell one and protective shell two are sealed by screwing together a threaded cylinder and threaded groove, completely covering the connecting flange, fixed flange and fixing bolts inside, isolating them from humid and corrosive media, solving the problem of bolts being prone to rust and corrosion in traditional flange connections, extending the service life of components and reducing maintenance frequency.

[0014] 3. Convenient maintenance: When the pipeline connection needs to be inspected, simply unscrew the threaded connection between the first and second protective shells to quickly expose the connection components. Compared with traditional complex protective structures (such as fully enclosed shells), this simplifies maintenance operations and reduces maintenance time and labor costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a one-piece volumetric flow meter.

[0016] Figure 2 This is a schematic diagram of the sealing ring and limiting plate in a one-piece volumetric flow meter.

[0017] Figure 3This is a schematic diagram of the protective shell and threaded cylinder in a one-piece volumetric flow meter.

[0018] Figure 4 This is a schematic diagram of the protective shell and threaded groove in a one-piece volumetric flow meter.

[0019] In the diagram: 1. Flow meter body; 2. Inlet pipe; 3. Outlet pipe; 4. Limiting plate; 5. Fixed flange; 6. First connecting pipe; 7. Connecting flange; 8. Fixing bolt; 9. Annular groove; 10. Sealing ring; 11. Protective shell one; 12. Threaded cylinder; 13. Protective shell two; 14. Limiting groove; 15. Threaded groove; 16. Second connecting pipe. Detailed Implementation

[0020] To facilitate understanding of the technical means, creative features, objectives, and effects of this utility model, the following detailed description of specific embodiments further illustrates this utility model. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Please see Figures 1-4In this embodiment of the present invention, an integrally formed volumetric flow meter includes a flow meter body 1, a first connecting pipe 6, a second connecting pipe 16, a protective shell 11, and a protective shell 2 13. An inlet pipe 2 is fixedly connected and communicates with one side of the flow meter body 1, and an outlet pipe 3 is fixedly connected and communicates with the other side of the flow meter body 1. A fixing flange 5 is fixedly connected to the end of both the inlet pipe 2 and the outlet pipe 3 away from the flow meter body 1. The first connecting pipe 6 is located to the left of the inlet pipe 2, and the second connecting pipe 16 is located to the right of the outlet pipe 3. A connecting flange 7 is fixedly connected to one end of both the first connecting pipe 6 and the second connecting pipe 16, wherein the connecting flange 7 corresponds to the fixing flange 5. A protective shell 11 is provided on the outer wall of both the first connecting pipe 6 and the second connecting pipe 16, wherein the protective shell 11 is slidably connected to the first connecting pipe 6 and the second connecting pipe 16. A threaded cylinder 12 is provided on the side of each protective shell 11. The threaded cylinder 12 is fixedly connected to the protective shell 11. The outer walls of the inlet pipe 2 and the outlet pipe 3 are each provided with a protective shell 2 13, which is slidably connected to the inlet pipe 2 and the outlet pipe 3. The protective shell 2 13 has a threaded groove 15 on one side, and the threaded cylinder 12 is threadedly connected in the threaded groove 15. The connecting flange 7 and the fixed flange 5 are located inside the protective shell 11 and the protective shell 2 13. Several sets of limiting plates 4 are fixedly connected to the outer walls of the inlet pipe 2 and the outlet pipe 3. Several sets of limiting grooves 14 are opened on the protective shell 2 13, and the limiting plates 4 are locked in the limiting grooves 14. Several sets of bolt holes are opened on the connecting flange 7 and the fixed flange 5, and fixing bolts 8 are installed in the bolt holes. The fixing bolts 8 can fix the connecting flange 7 and the fixed flange 5 together. An annular groove 9 is opened on one side of the connecting flange 7 and the fixed flange 5, and a sealing ring 10 is locked in the annular groove 9.

[0022] The working principle of this utility model is as follows: When connecting the first connecting pipe 6, the second connecting pipe 16 and the inlet / outlet pipe 3 of the flow meter, first align the connecting flange 7 and the fixed flange 5, and use the fixing bolt 8 to tighten it through the bolt hole to make the pipeline connected. At the same time, the sealing ring 10 in the annular groove 9 is deformed by the flange compression, filling the tiny gap between the flanges, blocking the fluid leakage channel, and ensuring the sealing effect. After connection, slide the protective shell 11 and the protective shell 2 13 so that the two are screwed together and sealed by the threaded cylinder 12 and the threaded groove 15. The limiting plate 4 is inserted into the limiting groove 14 to restrict the rotation of the protective shell 2 13. Only the protective shell 11 needs to be rotated to realize the connection between the two, ensuring the stability of the protective structure. After sealing, the connecting flange 7, the fixed flange 5 and the fixing bolt 8 are covered in the protective shell, isolating the external corrosive media (such as humid air and corrosive liquid splashes) and reducing the risk of rust and corrosion. Moreover, the inner wall of the protective shell fits with the connecting flange 7 and the fixed flange 5, further strengthening the seal, preventing external air and impurities from seeping into the pipeline connection gap, and improving the overall sealing performance and component durability.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A one-piece volumetric flow meter, comprising a flow meter body (1), a first connecting pipe (6), a second connecting pipe (16), a first protective shell (11), and a second protective shell (13), characterized in that, The flow meter body (1) has an inlet pipe (2) fixedly connected and connected to one side, and an outlet pipe (3) fixedly connected and connected to the other side. The inlet pipe (2) and the outlet pipe (3) are both fixedly connected to a fixed flange (5) at the ends away from the flow meter body (1). A first connecting pipe (6) is provided on the left side of the inlet pipe (2), and a second connecting pipe (16) is provided on the right side of the outlet pipe (3). A connecting flange (7) is fixedly connected to one end of the first connecting pipe (6) and the second connecting pipe (16), wherein the connecting flange (7) corresponds to the fixed flange (5). A protective shell (11) is provided on the outer wall of the first connecting pipe (6) and the second connecting pipe (16), wherein the protective shell (11) is slidably connected to the first connecting pipe (6) and the second connecting pipe (16).

2. The integrally molded volumetric flow meter according to claim 1, characterized in that, Each side of the protective shell (11) is provided with a threaded cylinder (12), wherein the threaded cylinder (12) is fixedly connected to the protective shell (11).

3. The integrally molded volumetric flow meter according to claim 1, characterized in that, Both the inlet pipe (2) and the outlet pipe (3) are provided with a second protective shell (13), which is slidably connected to the inlet pipe (2) and the outlet pipe (3).

4. The integrally molded volumetric flow meter according to claim 1, characterized in that, The protective shell 2 (13) has a threaded groove (15) on one side, and the threaded cylinder (12) is threadedly connected in the threaded groove (15).

5. The integrally molded volumetric flow meter according to claim 1, characterized in that, The connecting flange (7) and the fixed flange (5) are located inside the first protective shell (11) and the second protective shell (13). Several sets of limiting plates (4) are fixedly connected to the outer walls of the inlet pipe (2) and the outlet pipe (3).

6. The integrally molded volumetric flow meter according to claim 1, characterized in that, The protective shell 2 (13) is provided with several sets of limiting grooves (14), wherein the limiting plate (4) is stuck in the limiting groove (14).

7. The integrally molded volumetric flow meter according to claim 1, characterized in that, Both the connecting flange (7) and the fixed flange (5) are provided with several sets of bolt holes, and each bolt hole is provided with a fixing bolt (8).

8. The integrally molded volumetric flow meter according to claim 1, characterized in that, Both the connecting flange (7) and the fixed flange (5) have annular grooves (9) on one side, and a sealing ring (10) is fitted inside the annular grooves (9).

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