Flow meter
The first and second bosses arranged through chamfering solve the problem of high difficulty in opening the flowmeter in integrated injection molding production, reduce production costs, and improve detection accuracy and sealing by detecting the seal ring and rectifier plate The efficiency of flowmeter production and use is ensured.
Patent Information
- Application Number
- CN202420034986.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-05
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-05
AI Technical Summary
In the integrated injection molding process of the existing flowmeter, the injection molding of the first protrusion and the second protrusion are difficult to open, resulting in high production costs and difficult to ensure detection accuracy.
The first and second bosses arranged with chamfers reduce the difficulty of opening the mold of the inner wall of the flowmeter, and ensure that the fluid does not easily enter the sensor channel by detecting the sealing ring and rectifier plate, thereby improving detection accuracy and sealing.
It reduces the production cost of the flow meter, ensures detection accuracy and sealing, reduces the possibility of fluid entering the sensor channel, and improves the service life of the flow meter.
Smart Images
Figure CN222188420U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of flow meters, and in particular to a flow meter. Background Art
[0002] A flow meter is a common instrument used to measure the flow rate of a fluid in a pipeline. It is generally produced through an integrated injection molding process to ensure the sealing of the flow meter, thereby reducing the occurrence of leakage or incorrect measurements.
[0003] In the existing related technologies, such as the Chinese invention patent authorization announcement number: CN 105004379 B, patent name: flow sensor. It discloses a flow sensor, including a body and a detector. An annular wall portion including a connecting channel arranged between a first channel and a second channel, a first sensor channel facing the first channel and introducing a fluid into the detector, and a second sensor channel facing the second channel and leading out the fluid that has passed through the detector are provided in the body. One end of the first sensor channel extends into a first protrusion protruding from the inner wall of the first channel, and one end of the second sensor channel extends into a second protrusion protruding from the inner wall of the second channel. The end of the first protrusion and the end of the second protrusion are radially positioned outward relative to the inner wall of the connecting channel defining the annular wall portion. The end of the second protrusion is close to the annular wall portion, and the end of the first protrusion is farther away from the annular wall portion than the end of the second protrusion. The first rectifying element is arranged in the first channel and rectifyes the fluid flowing to the downstream side of the first protrusion, and the second rectifying element is located on the downstream side of the second protrusion.
[0004] This invention patent arranges the first protrusion and the second protrusion so that it is difficult for moisture, oil or similar substances that move toward the downstream side of the main body and pass through the inner circumferential surface of the first channel and the second channel to directly enter and invade the first sensor channel and the second sensor channel, thereby making it difficult for the detector to be damaged by moisture, oil or the like or for it to be difficult to ensure detection accuracy.
[0005] With respect to the above-mentioned related technologies, when the flow meter is produced by an integrated injection molding process, the injection molding of the first protrusion and the second protrusion is difficult, which is not conducive to ensuring the production cost of the flow meter. Summary of the invention
[0006] In order to ensure the production cost of the flow meter, the present application provides a flow meter.
[0007] The flow meter provided in this application adopts the following technical solution:
[0008] A flow meter comprises a main body and a detector, wherein the main body is provided with a first channel and a second channel, and the first channel and the second channel are interconnected;
[0009] The inner wall of the first channel is provided with a first boss, the corners of the first boss are chamfered, and the first boss is provided with a first sensor channel connected to the first channel;
[0010] The inner wall of the second channel is provided with a second boss, the corners of the second boss are chamfered, the second boss is provided with a second sensor channel connected to the second channel, and the second sensor channel is connected to the first sensor channel;
[0011] The detector is used to detect the flow rate of the fluid flowing through the first sensor channel and the second sensor channel.
[0012] By adopting the above technical solution, the first boss and the second boss make it difficult for moisture, oil or similar substances on the inner circumferential surfaces of the first channel and the second channel to directly enter and invade the first sensor channel and the second sensor channel, thereby helping to ensure the detection accuracy of the flowmeter and reduce the occurrence of flowmeter damage.
[0013] In addition, compared with the case where the first protrusion is set in the first channel and the second protrusion is set in the second channel, the chamfered first boss and the second boss make the inner walls of the first channel and the second channel smoother, which makes it easier to open the mold during the one-piece injection molding production of the flow meter, which is beneficial to ensuring the production cost of the flow meter.
[0014] Optionally, the main body is provided with a detection introduction channel, and the first sensor channel and the second sensor channel are both connected to the detection introduction channel;
[0015] The detector comprises a substrate and a detection element, wherein the substrate is mounted on the main body, the detection element is mounted on the substrate, and the detection element is arranged inside the detection introduction channel.
[0016] By adopting the above technical solution, when assembling the detector to the main body, the detection element can be placed in the detection introduction channel by installing the substrate to the main body, which is convenient and quick. It reduces the occurrence of the situation that when assembling the detector to the main body, the first channel and the second channel need to be aligned with the detection introduction channel to complete the assembly.
[0017] Optionally, the main body is provided with a detection sealing ring, and the detection introduction channel is located in the area enclosed by the detection sealing ring.
[0018] By adopting the above technical solution, the detection sealing ring surrounds the detection introduction channel, so that the fluid is not easy to leak from the detection introduction channel, and the structure is simple and reliable.
[0019] Optionally, the substrate can be detachably mounted on the main body.
[0020] By adopting the above technical solution, it is convenient to repair and replace the substrate.
[0021] Optionally, the main body is provided with a communication channel, the first channel is connected to one end of the communication channel, and the second channel is connected to the other end of the communication channel;
[0022] The inner diameters of the first channel and the second channel are both larger than the inner diameter of the connecting channel.
[0023] By adopting the above technical solution, the inner diameter of the connecting channel is smaller, which plays a throttling role, thereby making it easier for the fluid to enter the first channel or the second channel.
[0024] Optionally, the distance between the first sensor channel and the connecting channel is equal to the distance between the second sensor channel and the connecting channel.
[0025] By adopting the above technical solution, the fluid in the detection introduction channel can flow more stably, which is beneficial to ensuring the detection accuracy of the flow meter.
[0026] Optionally, the main body is installed with a rectifying plate, and the rectifying plate is arranged close to an end of the first channel away from the second channel or an end of the second channel away from the first channel.
[0027] By adopting the above technical solution, the rectifying plate enables the fluid to pass through the first channel or the second channel more stably, which is beneficial to ensuring the detection accuracy of the flow meter.
[0028] Optionally, it further comprises a joint, the joint is installed on the main body, the joint is penetrated by a connecting channel, and the connecting channel is connected to the first channel or the second channel;
[0029] The joint is provided with a first sealing ring, which is tightly fitted on the rectifying plate.
[0030] By adopting the above technical solution, the first sealing ring not only makes it difficult for the fluid to leak from the gap between the joint and the main body, but also increases the stability of the connection between the rectifying plate and the main body.
[0031] Optionally, it further comprises a joint, the joint is installed on the main body, the joint is penetrated by a connecting channel, and the connecting channel is connected to the first channel or the second channel;
[0032] The joint is provided with a second sealing ring, and the second sealing ring is tightly fitted against the inner wall of the first channel or the inner wall of the second channel.
[0033] By adopting the above technical solution, the second sealing ring makes it difficult for the fluid to leak from the gap between the joint and the main body, which is beneficial to ensure the sealing of the flow meter.
[0034] Optionally, it further comprises a joint, the joint is installed on the main body, the joint is penetrated by a connecting channel, and the connecting channel is connected to the first channel or the second channel;
[0035] The joint is provided with an installation limiting groove, the main body is provided with an inserting hole, a nail pin is passed through the inserting hole, and the nail pin is inserted and matched with the installation limiting groove.
[0036] By adopting the above technical solution, when assembling the connector with the main body, it is only necessary to insert the pin into the plug hole and make the pin plug and fit into the limit groove, and then the connector can be assembled with the main body, which is convenient and quick.
[0037] In summary, the present application includes at least one of the following beneficial technical effects:
[0038] 1. The first boss and the second boss make it difficult for moisture, oil or similar substances on the inner circumferential surfaces of the first channel and the second channel to directly enter and invade the first sensor channel and the second sensor channel, thereby ensuring the detection accuracy of the flow meter and reducing the occurrence of flow meter damage.
[0039] In addition, compared with the case where the first protrusion is set in the first channel and the second protrusion is set in the second channel, the chamfered first boss and the second boss make the inner walls of the first channel and the second channel smoother, which makes it easier to open the mold during the one-piece injection molding production of the flow meter, which is beneficial to ensuring the production cost of the flow meter.
[0040] 2. When assembling the detector to the main body, the detection element can be placed in the detection introduction channel by installing the substrate to the main body, which is convenient and quick. It reduces the occurrence of the situation where the first channel and the second channel need to be aligned with the detection introduction channel to complete the assembly when assembling the detector to the main body.
[0041] 3. The detection sealing ring surrounds the detection introduction channel, making it difficult for the fluid to leak from the detection introduction channel, and the structure is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0042] Figure 1 It is a cross-sectional schematic diagram of the overall structure of the embodiment of the present application;
[0043] Figure 2 yes Figure 1 A magnified schematic diagram of part A;
[0044] Figure 3 yes Figure 1 An enlarged schematic diagram of part B.
[0045] Explanation of the accompanying drawings: 1. Main body; 11. First inclined surface; 12. Second inclined surface; 13. Detection sealing ring; 14. Pin; 101. First channel; 102. Second channel; 103. Connecting channel; 104. First sensor channel; 105. Second sensor channel; 106. Detection introduction channel; 2. Detector; 21. Substrate; 22. Detection element; 23. Housing; 231. Transparent protective cover plate; 232. Button; 24. Display screen; 3. Connector; 301. Connection channel; 31. Installation limit groove; 32. Sealing ring limit groove; 33. First sealing ring; 34. Second sealing ring; 4. First boss; 5. Second boss; 6. Rectifier plate. DETAILED DESCRIPTION
[0046] The following is combined with Figure 1-3 This application is described in further detail.
[0047] The present application embodiment discloses a flow meter. Figure 1 The flow meter includes a main body 1, a detector 2 and a connector 3.
[0048] Reference Figure 1 The main body 1 is provided with a first channel 101, a second channel 102 and a connecting channel 103. The first channel 101 and the second channel 102 are both connected to the connecting channel 103, and the first channel 101 and the second channel 102 are respectively located on both sides of the connecting channel 103. In addition, the first channel 101 and the second channel 102 are both coaxially arranged with the connecting channel 103, and the inner diameter of the first channel 101 and the inner diameter of the second channel 102 are both larger than the inner diameter of the connecting channel 103.
[0049] Reference Figure 1 A first inclined surface 11 is arranged between the first channel 101 and the connecting channel 103, and the first inclined surface 11 is arranged to be inclined from the first channel 101 to the connecting channel 103 along the radial direction of the connecting channel 103; a second inclined surface 12 is arranged between the second channel 102 and the connecting channel 103, and the second inclined surface 12 is arranged to be inclined toward the connecting channel 103 along the radial direction of the connecting channel 103, that is, there is a smooth transition between the first channel 101 and the second channel 102 and the connecting channel 103, so as to reduce the difficulty of injection molding.
[0050] Reference Figure 1 and Figure 2, the inner wall of one end of the first channel 101 is integrally connected with the first boss 4, that is, the diameter of one end of the first channel 101 is smaller than the diameter of the other end of the first channel 101. In addition, the first boss 4 is arranged close to the connecting channel 103, and the corner of the first boss 4 away from the connecting channel 103 is chamfered to ensure the smoothness of the inner wall of the first channel 101, thereby reducing the difficulty and cost of injection molding of the first channel 101;
[0051] Reference Figure 1 and Figure 3 The inner wall of one end of the second channel 102 is integrally connected with the second boss 5, that is, the diameter of one end of the second channel 102 is smaller than the diameter of the other end of the second channel 102. In addition, the second boss 5 is arranged close to the connecting channel 103, and the corner of the second boss 5 away from the connecting channel 103 is chamfered to ensure the smoothness of the inner wall of the second channel 102, thereby reducing the difficulty and cost of injection molding of the second channel 102.
[0052] Reference Figure 2 and Figure 3 , the thickness of the first boss 4 and the second boss 5 is 0.1-0.2 mm, and in the embodiment of the present application, the thickness of the first boss 4 and the second boss 5 is 0.15 mm. The width of the first boss 4 and the second boss 5 is 1.5-2.5 mm, and in the embodiment of the present application, the width of the first boss 4 and the second boss 5 is 2.0 mm. By setting the thickness of the first boss 4 and the second boss 5 to 0.15 mm and the width of the first boss 4 and the second boss 5 to 2.0 mm, when the flow meter is injection molded, the first boss 4 and the second boss 5 are not easy to affect the molding of the first channel 101 and the second channel 102, reducing the injection molding difficulty of the flow meter, thereby reducing the production cost of the flow meter.
[0053] Reference Figure 2 The first boss 4 is provided with a first sensor channel 104 connected to the first channel 101, and the axis of the first sensor channel 104 is perpendicular to the axis of the first channel 101; Figure 3 The second boss 5 is provided with a second sensor channel 105 connected with the second channel 102, and the axis of the second sensor channel 105 is perpendicularly arranged to the axis of the second channel 102, so that it is difficult for moisture, oil or similar substances on the inner circumferential surfaces of the first channel 101 and the second channel 102 to directly enter and invade the first sensor channel 104 and the second sensor channel 105 through the first boss 4 and the second boss 5, thereby ensuring the detection accuracy of the flow meter and reducing the occurrence of damage to the flow meter.
[0054] Replay Figure 1The distance between the first sensor channel 104 and the connecting channel 103 is equal to the distance between the second sensor channel 105 and the connecting channel 103, that is, the first sensor channel 104 and the second sensor channel 105 are symmetrically distributed to ensure the stability of fluid flow.
[0055] Reference Figure 1 A detection introduction channel 106 is opened on one side of the main body 1, and the first channel 101 and the second channel 102 are both connected to the detection introduction channel 106;
[0056] The detector 2 includes a substrate 21, a detection element 22, a housing 23 and a display screen 24. The substrate 21 is detachably mounted on a side of the main body 1 where the detection introduction channel 106 is opened, and in the embodiment of the present application, the substrate 21 is mounted on the main body 1 by bolts, and the detection introduction channel 106 is located in the area covered by the substrate 21. The main body 1 is fixedly embedded with a detection sealing ring 13, and the detection introduction channel 106 is located in the area surrounded by the detection sealing ring 13, and the two sides of the detection sealing ring 13 are respectively tightly fitted to the substrate 21 and the main body 1, so as to ensure the sealing of the detection introduction channel 106.
[0057] Reference Figure 1 One side of the detection element 22 is fixedly mounted on the substrate 21, and the detection element 22 is disposed inside the detection introduction channel 106. The other side of the detection element 22 is close to the inner wall of the detection introduction channel 106, and the distance between the first sensor channel 104 and the detection element 22 is equal to the distance between the second sensor channel 105 and the detection element 22, so as to ensure the accuracy of flow detection.
[0058] Reference Figure 1 The housing 23 is fixedly mounted on the main body 1, and the substrate 21 is located in the area covered by the housing 23. The display screen 24 is fixedly mounted on the housing 23, and the display screen 24 is located on the top of the substrate 21, so that the user can know the specific value of the flow rate. The housing 23 is fixedly mounted with a transparent protective cover plate 231, and the transparent protective cover plate 231 is covered on the display screen 24, so as to ensure the service life of the display screen 24 and reduce the occurrence of scratches on the display screen 24. The housing 23 is also equipped with a button 232, so as to switch the display content of the display screen 24.
[0059] Reference Figure 1 In the embodiment of the present application, the number of the joints 3 is set to two, and the two joints 3 are respectively arranged close to the first channel 101 and the second channel 102;
[0060] One end of the connector 3 is disposed in the first channel 101 or the second channel 102, and an installation limit groove 31 is provided on the outer circumference of the end of the connector 3 disposed in the first channel 101 or the second channel 102, and the main body 1 is provided with two plug holes, which are respectively connected to the installation limit grooves 31. The plug holes are penetrated by a pin 14, and the pin 14 is plugged and matched with the installation limit groove 31, and the outer circumference of the pin 14 is tightly matched with the inner wall of the installation limit groove 31, so that the connector 3 can be easily installed on the main body 1.
[0061] Reference Figure 1 The connector 3 is provided with a connecting channel 301, which is connected to the first channel 101 or the second channel 102, and the first channel 101 and the second channel 102 are both arranged coaxially with the connecting channel 301. The main body 1 is provided with a rectifier plate 6, and in the embodiment of the present application, the number of the rectifier plates 6 is set to two. The two rectifier plates 6 are respectively arranged near each connecting channel 301, that is, one of the rectifier plates is arranged near the end of the first channel 101 away from the second channel 102, and the other rectifier plate is arranged near the end of the second channel 102 away from the first channel 101.
[0062] Reference Figure 1 , a sealing ring limiting groove 32 is provided at one end of the joint 3 disposed in the first channel 101 or the second channel 102, a first sealing ring 33 is fixedly embedded in the sealing ring limiting groove 32, and the two sides of the first sealing ring 33 are respectively tightly fitted with the inner wall of the rectifier plate 6 and the sealing ring limiting groove 32, so as to ensure the position stability of the rectifier plate 6 and reduce the occurrence of fluid leakage from the gap between the joint 3 and the main body 1. In addition, a second sealing ring 34 is also fixedly sleeved on the outer peripheral surface of one end of the joint 3 disposed in the first channel 101 or the second channel 102, and the second sealing ring 34 is tightly fitted with the inner wall of the first channel 101 or the inner wall of the second channel 102, so as to further reduce the occurrence of fluid leakage from the gap between the joint 3 and the main body 1.
[0063] The implementation principle of a flow meter in the embodiment of the present application is as follows: the fluid enters the first channel 101 from the connecting channel 301, and under the throttling effect of the connecting channel 103, part of the fluid enters the detection introduction channel 106 through the first sensor channel 104 provided on the first boss 4, and the fluid flow value is detected by the detection element 22. The detected fluid flows into the second channel 102 through the second sensor channel 105 provided on the second boss 5, and flows out of the flow meter through another connecting channel 301. By integrally connecting the first boss 4 with chamfered corners and the second boss 5 with chamfered corners in the first channel 101 and the second channel 102, respectively, the inner wall of the first channel 101 and the inner wall of the second channel 102 are both relatively smooth, which effectively reduces the difficulty of mold opening of the flow meter during one-piece injection molding production, thereby ensuring the production cost of the flow meter.
[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A flow meter, Features: The invention comprises a main body (1) and a detector (2), wherein the main body (1) is provided with a first channel (101) and a second channel (102), and the first channel (101) and the second channel (102) are connected to each other; The inner wall of the first channel (101) is provided with a first boss (4), the corners of the first boss (4) are chamfered, and the first boss (4) is provided with a first sensor channel (104) connected to the first channel (101); The inner wall of the second channel (102) is provided with a second boss (5), the corners of the second boss (5) are chamfered, the second boss (5) is provided with a second sensor channel (105) connected to the second channel (102), and the second sensor channel (105) is connected to the first sensor channel (104); The detector (2) is used to detect the flow rate of the fluid flowing through the first sensor channel (104) and the second sensor channel (105).
2. A flow meter according to claim 1, Features: The main body (1) is provided with a detection introduction channel (106), and the first sensor channel (104) and the second sensor channel (105) are both connected to the detection introduction channel (106); The detector (2) comprises a substrate (21) and a detection element (22), wherein the substrate (21) is mounted on the main body (1), the detection element (22) is mounted on the substrate (21), and the detection element (22) is arranged inside the detection introduction channel (106).
3. A flow meter according to claim 2, Features: The main body (1) is provided with a detection sealing ring (13), and the detection introduction channel (106) is located in the area surrounded by the detection sealing ring (13).
4. A flow meter according to claim 2, Features: The base plate (21) is detachably mounted on the main body (1).
5. A flow meter according to claim 1, Features: The main body (1) is provided with a communication channel (103), the first channel (101) is connected to one end of the communication channel (103), and the second channel (102) is connected to the other end of the communication channel (103); The inner diameters of the first channel (101) and the second channel (102) are both larger than the inner diameter of the connecting channel (103).
6. A flow meter according to claim 5, Features: The distance between the first sensor channel (104) and the communication channel (103) is equal to the distance between the second sensor channel (105) and the communication channel (103).
7. A flow meter according to claim 1, Features: The main body (1) is equipped with a rectifying plate (6), and the rectifying plate (6) is arranged close to an end of the first channel (101) away from the second channel (102) or an end of the second channel (102) away from the first channel (101).
8. A flow meter according to claim 7, Features: It also includes a joint (3), the joint (3) being mounted on the main body (1), the joint (3) having a connecting channel (301) extending therethrough, the connecting channel (301) being connected to the first channel (101) or the second channel (102); The joint (3) is provided with a first sealing ring (33), and the first sealing ring (33) is tightly fitted on the rectifying plate (6).
9. A flow meter according to claim 7, Features: It also includes a joint (3), the joint (3) being mounted on the main body (1), the joint (3) having a connecting channel (301) extending therethrough, the connecting channel (301) being connected to the first channel (101) or the second channel (102); The joint (3) is provided with a second sealing ring (34), and the second sealing ring (34) is tightly fitted against the inner wall of the first channel (101) or the inner wall of the second channel (102).
10. A flow meter according to claim 7, Features: It also includes a joint (3), the joint (3) being mounted on the main body (1), the joint (3) having a connecting channel (301) extending therethrough, the connecting channel (301) being connected to the first channel (101) or the second channel (102); The joint (3) is provided with an installation limit groove (31), the main body (1) is provided with an insertion hole, a pin (14) is passed through the insertion hole, and the pin (14) is inserted and matched with the installation limit groove (31).