A combined valve flow meter

Abstract

The present invention discloses a combined valve flowmeter, which relates to the technical field of flowmeters, and includes a connecting pipe and an electronic meter, wherein the meter and the connecting pipe are connected by a connecting rod, a metering module is provided at the bottom of the connecting rod, the metering module penetrates and extends to the inside of the connecting pipe, and the bottom of the connecting rod is detachably connected to the radial surface of the connecting pipe by a connecting component, wherein the connecting component includes a fixed block provided on the radial surface of the connecting pipe and a collar provided on the connecting rod, wherein the radial surface of the collar is provided with at least two raised blocks, and an arc block matching the number of raised blocks is provided on the fixed block, and a limiting groove matching the raised block is formed between two adjacent arc blocks, and the limiting groove is used for the raised block to generate longitudinal displacement, and an arc groove is provided on the inner surface of the arc block, and the cross-sectional size of the arc groove matches the cross-sectional size of the raised block. The present invention has the advantages of enhancing the stability of the connection and facilitating disassembly.

Description

Technical Field

[0001] The invention relates to the technical field of flow meters, and in particular to a combined valve flow meter. Background Art

[0002] At present, valve flowmeter is a common flow measurement instrument, which is widely used in flow monitoring of various fluids. Its basic principle is to measure the relationship between the flow velocity and flow rate of the fluid when it passes through the valve. Valve flowmeter is generally composed of valve, flow measurement sensor and display device.

[0003] When a fluid flows through a valve, the degree of opening of the valve affects the flow rate of the fluid. The higher the flow rate of the fluid inside the valve, the greater the flow rate. Valve flow meters usually use the differential pressure principle or the turbine rotor principle to measure the flow rate of liquids or gases. For example, in a differential pressure flowmeter, a pressure difference is generated when the fluid flows through a restrictor set in the fluid channel, and the pressure difference is proportional to the flow rate of the fluid. The flowmeter's measuring device captures this pressure change and converts it into a flow value through an algorithm.

[0004] For related technologies, reference may be made to the Chinese patent with the authorization announcement number CN117168560A, which discloses a combined valve flowmeter, belonging to the technical field of flowmeters, and comprising a connecting pipe, on both sides of which the outer walls are fixedly mounted with connecting side covers; in the invention, the flowmeter is designed to be combined by providing a combined assembly mechanism, and when assembling the flowmeter, the metering module of the metering assembly can be directly inserted into the assembly hole of the assembly seat, and at this time, the side shell will also enter the card slot of the connecting seat, and at this time, the telescopic pressing shaft can contact the inner wall of the card slot, and the telescopic pressing shaft will be pressed downward, and the two positioning shafts can be moved downward synchronously, and at this time, one end of the positioning shaft will be separated from the bottom bottom hole of the assembly bayonet pin, and at this time, the external connection spring can push the assembly bayonet pins at both ends to both sides, and the pushed assembly bayonet pins can be stuck in the card hole of the connecting seat, completing the rapid positioning and installation of the metering assembly, and through this design, the assembly of the metering assembly can be quickly completed without the need to use additional assembly parts, which is convenient to use and improves the actual application effect of the overall flowmeter.

[0005] However, the fluid in the connecting pipe has an outward pressure, which causes the metering module to generate an upward thrust. The existing technology uses a bayonet to achieve fixation. When resisting the upward thrust generated by the metering module, if it is not properly aligned or fixed during assembly, it will cause an unstable connection. In addition, although the modular design is easy to install, if the interdependence of multiple components needs to be released before disassembly, the complexity of disassembly will be increased. In order to solve the above problems, a modular valve flowmeter is proposed. Summary of the invention

[0006] The present application provides a combined valve flow meter, which has the advantages of enhancing the stability of connection and facilitating disassembly.

[0007] The present application provides a combined valve flow meter, which adopts the following technical solution:

[0008] A combined valve flowmeter comprises a connecting pipe and an electronic meter, wherein the meter and the connecting pipe are connected via a connecting rod, a metering module is provided at the bottom of the connecting rod, the metering module penetrates and extends into the interior of the connecting pipe, the bottom of the connecting rod is detachably connected to the radial surface of the connecting pipe via a connecting component, the connecting component comprises a fixed block arranged on the radial surface of the connecting pipe and a collar arranged on the connecting rod, at least two protruding blocks are provided on the radial surface of the collar, the fixed block is provided with arc blocks matching the number of the protruding blocks, a limiting groove matching the protruding blocks is formed between two adjacent arc blocks, the limiting groove is used for the protruding blocks to generate longitudinal displacement, an arc groove is provided on the inner surface of the arc block, the cross-sectional size of the arc groove matches the cross-sectional size of the protruding blocks; the protruding block is aligned with and inserted into the limiting groove, and the second rod body is rotated laterally, so that the protruding block on the collar is misaligned with the limiting groove until it enters the interior of the arc groove, and the arc groove is used to limit the longitudinal displacement of the protruding block.

[0009] By adopting the above technical solution, the connecting component is connected by cooperating with the fixing block of the collar; the raised block on the collar and the arc block on the fixing block cooperate with each other through the limiting groove to form a mechanical locking mechanism to ensure stability in the connected state; a certain longitudinal displacement space is provided through the limiting groove so that the raised block can slide during connection and disassembly; when in the connected state, lateral rotation of the second rod body can cause the raised block to be misaligned with the limiting groove, thereby causing the raised block to slide along the arc groove; this not only enhances the stability of the connection, but also facilitates disassembly.

[0010] Preferably, an arc-shaped insert is slidably provided in the arc groove of the arc block, a fixing ring is provided in the arc groove of the arc block, two ends of the arc-shaped insert respectively form a plug-in end and a pressure-bearing end, the plug-in end of the arc-shaped insert passes through the fixing ring, and an enlarged portion is formed on the pressure-bearing end of the arc-shaped insert.

[0011] By adopting the above technical solution, when the raised block of the second rod body is aligned with and inserted into the limiting groove, the raised block and the limiting groove are misaligned by horizontally rotating the rod body, so that the arc-shaped insertion strip is in a compressed state; when pressure is continuously applied to the compressed end of the insertion strip, the plug-in end of the arc-shaped insertion strip can pass through the fixing ring and the arc groove outlet in sequence, and finally cover the limiting groove and enter the inside of another arc-shaped block, thereby playing a self-locking role.

[0012] Preferably, the enlarged portion of the arc-shaped inserting strip is connected to the fixing ring via a first spring.

[0013] By adopting the above technical solution, the first spring connection provides a restoring force; when the applied external pressure is released, the arc-shaped insert can return to its initial position, thereby operating or resetting again.

[0014] Preferably, the cross-sectional area of ​​the arc-shaped inserting strip expands uniformly and gradually from the plug-in end to the pressure-bearing end; and the cross-sectional dimension of the pressure-bearing end of the arc-shaped inserting strip is larger than the inner ring dimension of the fixing ring.

[0015] By adopting the above technical solution, when the plug-in end of the arc-shaped insert forms a mechanical connection with the fixing ring, the enlarged cross-section enhances the friction between the insert and the fixing ring; this friction provides a stronger locking effect, effectively preventing the insert from being displaced or falling off under stress.

[0016] Preferably, a plug-in self-locking component for locking the arc-shaped insert strip is provided in the arc groove of the arc-shaped block.

[0017] By adopting the above technical solution, the arc-shaped insert strip is quickly locked by providing a plug-in self-locking component.

[0018] Preferably, the plug-in self-locking component includes a through hole arranged in the arc groove of the arc block and a push-in hole arranged on the plug-in end of the arc-shaped insertion strip, the through hole and the push-in hole match each other, a plug-in rod is telescopically provided inside the through hole of the arc block, the plug-in rod is connected to the inner wall of the through hole by a second spring, one end of the plug-in rod faces the push-in hole, and the plug-in rod is used to establish a locking connection between the arc-shaped insertion strip and another arc block.

[0019] By adopting the above technical solution, when the plug-in end of the arc-shaped insert is inserted into the arc groove of the arc block, the plug-in rod forms a physical mechanical connection with the push-in hole through the through hole, thereby ensuring the stability of the arc-shaped insert; one end of the plug-in rod faces the push-in hole, and after insertion, it enters the push-in hole and is locked, thereby firmly connecting the arc-shaped insert and the arc block; at this time, the stability of the plug-in rod and the elastic force of the second spring jointly ensure that the insert will not fall off easily when subjected to external force; this self-locking mechanism effectively prevents the insert from accidentally falling off during operation, thereby improving the safety of the overall structure, especially in dynamic application environments.

[0020] Preferably, a transverse through hole is provided inside the arc block, the transverse through hole is communicated with the bottom of the through hole, a latch is provided inside the transverse through hole, and a first inclined surface is provided on one end of the latch close to the through hole.

[0021] By adopting the above technical solution, one end of the plug-in rod is moved toward the direction of the plug-in hole through the insertion of the plug-in pin, so as to realize the self-locking fixation of the plug-in self-locking component.

[0022] Preferably, the connecting rod comprises a first rod body and a second rod body, the top of the first rod body is connected to the bottom of the meter, and the bottom of the first rod body is connected to the top of the second rod body via a connecting seat.

[0023] By adopting the above technical solution, the first rod body and the second rod body are connected via the connecting seat, which facilitates maintenance and replacement.

[0024] Preferably, a through hole is provided inside the fixing block for the bottom of the second rod to pass through, and a sealing ring is provided on the second rod, the inner ring size of the sealing ring matches the outer ring size of the second rod, and the outer ring of the sealing ring matches the inner diameter size of the through hole.

[0025] By adopting the above technical solution, when the second rod moves in the through hole, the sealing ring effectively prevents external substances from entering the through hole, thereby protecting the cleanliness and normal operation of the internal system; in addition, the sealing ring ensures the integrity of the system and prevents leakage of oil, gas or other media, thereby improving the working efficiency and safety of the equipment.

[0026] Preferably, a detachable filter screen is provided inside the connecting pipe, a support column is provided inside the connecting pipe, a transverse mounting column is provided on the support column, the transverse mounting column matches a mounting sleeve provided at the center of the filter screen, and the transverse mounting column and the mounting sleeve are clamped together;

[0027] By adopting the above technical solution, a detachable filter is provided; daily maintenance and cleaning can be conveniently performed, thereby reducing the flow resistance and efficiency reduction problems caused by dirty filter; through reliable support and clip-on design, the stability of the filter during use is ensured, thereby improving the filtering effect and ensuring effective removal of impurities in the fluid.

[0028] In summary, this application has the following beneficial effects:

[0029] 1. The connection component is connected by cooperating with the fixing block of the collar; the raised block on the collar and the arc block on the fixing block cooperate with each other through the limiting groove to form a mechanical locking mechanism to ensure stability in the connected state; a certain longitudinal displacement space is provided through the limiting groove so that the raised block can slide during connection and disassembly; when in the connected state, the lateral rotation of the second rod body can cause the raised block to be misaligned with the limiting groove, thereby causing the raised block to slide along the arc groove; this not only enhances the stability of the connection, but also facilitates disassembly.

[0030] 2. When the plug-in end of the arc-shaped insert is inserted into the arc groove of the arc block, the plug-in rod forms a physical mechanical connection with the push-in hole through the through hole, ensuring the stability of the arc-shaped insert; one end of the plug-in rod faces the push-in hole, and after insertion, it enters the push-in hole and is locked, thereby firmly connecting the arc-shaped insert and the arc block; at this time, the stability of the plug-in rod and the elastic force of the second spring jointly ensure that the insert will not fall off easily when subjected to external force; this self-locking mechanism effectively prevents the insert from accidentally falling off during operation, thereby improving the safety of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the overall structure of the combined valve flowmeter in this embodiment;

[0032] Figure 2 is an exploded schematic diagram of the internal structure of the connecting rod in this embodiment;

[0033] Figure 3 is an exploded schematic diagram of the internal structure of the connecting component in this embodiment;

[0034] Figure 4 is an overall cross-sectional view of the arc block in this embodiment;

[0035] Figure 5 is a cross-sectional view of the overall structure of the arc-shaped insert in the present embodiment when it is in a rotating state;

[0036] Figure 6 Schematic diagram of the internal structure of the plug-in self-locking assembly in this embodiment;

[0037] Figure 7 is a schematic diagram of the connection structure between the second rod body and the fixed block in this embodiment;

[0038] Figure 8 is an exploded view between the connecting pipe and the filter screen in this embodiment;

[0039] Explanation of the accompanying drawings: 1. electronic meter; 2. connecting pipe; 3. connecting rod; 301. first rod body; 302. second rod body; 303. connecting seat; 4. metering module; 5. connecting component; 501. fixing block; 502. collar; 503. raised block; 504. arc block; 505. limiting groove; 506. arc groove; 507. arc-shaped insert; 508. fixing ring; 509. first spring; 6. plug-in self-locking component; 601. through hole; 602. plug-in rod; 603. second spring; 604. horizontal through hole; 605. latch; 606. first inclined surface; 7. through hole; 8. sealing ring; 9. filter; 10. support column; 11. horizontal mounting column; 12. mounting sleeve. DETAILED DESCRIPTION

[0040] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content. Example

[0041] The present invention discloses a combined valve flow meter, such as Figure 1 and Figure 2 As shown, it includes a connecting pipe 2 and an electronic meter 1. The flow meter is based on the Bernoulli principle and calculates the flow rate by measuring the velocity or pressure difference of the fluid in the connecting pipe 2. The connecting pipe 2 is used to connect the valve and the electronic meter 1 to ensure that the fluid flows at a certain speed in the flow meter to optimize the measurement accuracy.

[0042] like Figure 1 and Figure 2 As shown, the radial surfaces of the meter and the connecting pipe 2 are connected by a connecting rod 3. Specifically, the connecting rod 3 includes a first rod body 301 and a second rod body 302. The top of the first rod body 301 is fixedly connected to the bottom of the meter, and the bottom of the first rod body 301 and the top of the second rod body 302 are detachably connected via a connecting seat 303. The first rod body 301 is fixedly connected to the bottom of the electronic meter 1 to ensure the stability of the electronic meter 1 and reduce the measurement error; the second rod body 302 is detachably connected to the first rod body 301 via the connecting seat 303, which is convenient for maintenance and replacement; through the design of the connecting seat 303, the connection between the flow meter and the valve is more flexible, which is convenient for repairing and replacing the electronic meter 1 or the connecting pipe 2 without disassembling the entire system.

[0043] like Figure 2 As shown, a metering module 4 is fixedly installed at the bottom of the second rod body 302, and the metering module 4 passes through the radial surface of the connecting tube 2 and extends to the inside of the connecting tube 2; the metering module 4 is usually used to accurately measure the flow rate, velocity or other parameters of the fluid; by being set at the bottom of the second rod body 302 and passing through the connecting tube 2, the metering module 4 can directly contact the fluid, thereby obtaining real-time flow data; the metering module 4 will convert the collected pressure and flow rate into electrical signals, which is convenient for subsequent data processing and display; direct contact with the fluid can improve the accuracy and response speed of the signal; the metering module 4 directly intervenes in the fluid for measurement, which can reduce errors caused by factors such as position and flow interference, and provide more accurate flow data.

[0044] like Figure 3As shown, the bottom of the second rod body 302 and the radial surface of the connecting pipe 2 are detachably connected by a connecting component 5. Specifically, the connecting component 5 includes a fixing block 501 arranged on the radial surface of the connecting pipe 2 and a collar 502 arranged on the second rod body 302. The radial surface of the collar 502 is provided with two protruding blocks 503. Two arc blocks 504 are fixedly installed on the upper surface of the fixing block 501. A limiting groove 505 matching the protruding block 503 is formed between the two arc blocks 504. The limiting groove 505 is used for the protruding block 503 to generate longitudinal displacement. The inner surface of the arc block 504 is provided with an arc groove 506, and the cross-sectional size of the arc groove 506 matches the cross-sectional size of the protruding block 503; the protruding block 503 is aligned with and inserted into the limiting groove 505, and the second rod body 302 is rotated horizontally, so that the protruding block 503 on the ring 502 is misaligned with the limiting groove 505 until it enters the interior of the arc groove 506, and the arc groove 506 is used to limit the longitudinal displacement of the protruding block 503.

[0045] like Figure 3 As shown, the connection component 5 is connected by the cooperation of the fixing block 501 and the collar 502; the fixing block 501 is located on the radial surface of the connecting tube 2, and the collar 502 is installed on the second rod body 302; the raised block 503 on the collar 502 and the arc block 504 on the fixing block 501 are cooperated through the limiting groove 505 to form a mechanical locking method to ensure that the two remain stable in the connected state; the limiting groove 505 provides a certain longitudinal displacement space, allowing the raised block 503 to slide during connection and disassembly; in the connected state, by horizontally rotating the second rod body 302, the raised block 503 and the limiting groove 505 are misaligned, and the raised block 503 can slide along the arc groove 506; this design makes the connection more stable and convenient for disassembly; only a simple horizontal rotation is required to achieve connection or disassembly, without the need for additional tools, which is very convenient.

[0046] like Figure 3 and Figure 4As shown, specifically, an arc-shaped inserting strip 507 is slidably provided in the arc groove 506 of the arc-shaped block 504, a fixing ring 508 is fixedly installed in the arc groove 506 of the arc-shaped block 504, and the two ends of the arc-shaped inserting strip 507 form a plug-in end and a pressure-receiving end respectively, the plug-in end of the arc-shaped inserting strip 507 passes through the fixing ring 508, and an enlarged portion is formed on the pressure-receiving end of the arc-shaped inserting strip 507. When the protruding block 503 of the second rod body 302 is aligned with the limiting groove 505 and inserted, the rod body is rotated horizontally so that the protruding block 503 is misaligned with the limiting groove 505. This action will cause the arc-shaped inserting strip 507 to be in a a certain compression state; when pressure is continuously applied to the compressed end of the arc-shaped insert 507, the plug-in end of the arc-shaped insert 507 can pass through the outlet of the fixing ring 508 and the arc groove 506 in sequence, and finally cover the limiting groove 505, and enter the inside of another arc block 504; the expanded portion of the arc-shaped insert 507 is connected to the fixing ring 508 by a first spring 509, and the first spring 509 connection provides a restoring force. Once the applied external pressure is released, the arc-shaped insert 507 can be restored to its initial position, thereby allowing re-operation or resetting.

[0047] like Figure 4 and Figure 5 As shown, by aligning the raised block 503 with and inserting it into the limiting groove 505, and laterally rotating the second rod body 302, the raised block 503 on the collar 502 is misaligned with the limiting groove 505 until it enters the interior of the arc groove 506, and continuously applies pressure to the compressed end of the arc-shaped inserting strip 507, so that the plug-in end of the arc-shaped inserting strip 507 passes through the fixing ring 508 and the outlet of the arc groove 506 in turn, until it covers the limiting groove 505 and enters into another arc block 504, thereby being able to effectively play a self-locking role.

[0048] like Figure 3 and Figure 4 As shown, the cross-sectional area of ​​the arc-shaped insert 507 expands uniformly and gradually from the plug-in end to the pressure-bearing end; when the arc-shaped insert 507 is subjected to external pressure, the increase in the enlarged portion can effectively disperse the force applied to the arc-shaped insert 507; as the cross-sectional area gradually increases, the force-bearing area increases, which helps to reduce local stress concentration and improve the bearing capacity of the overall structure; the cross-sectional size of the pressure-bearing end of the arc-shaped insert 507 is larger than the inner ring size of the fixing ring 508; when a mechanical connection is formed between the plug-in end of the arc-shaped insert 507 and the fixing ring 508, the enlarged cross-sectional area can enhance the friction between the arc-shaped insert 507 and the fixing ring 508; this friction provides a stronger locking effect to prevent the arc-shaped insert 507 from being displaced or falling off under stress.

[0049] like Figure 5 and Figure 6As shown, the arc groove 506 of the arc block 504 is provided with a plug-in self-locking component 6 for locking the arc-shaped inserting strip 507. The plug-in self-locking component 6 includes a through hole 601 provided in the arc groove 506 of the arc block 504 and a push-in hole provided on the plug-in end of the arc-shaped inserting strip 507. The through hole 601 matches the push-in hole. A plug-in rod 602 is telescopically provided inside the through hole 601 of the arc block 504. The plug-in rod 602 is connected to the inner wall of the through hole 601 by a second spring 603. The second spring 60 One end of the arc-shaped inserting strip 507 is connected to the plug-in rod 602, and the other end of the second spring 603 is connected to the inner wall of the through hole 601. One end of the plug-in rod 602 faces the push-in hole, and the plug-in rod 602 is used to establish a locking connection between the arc-shaped inserting strip 507 and another arc-shaped block 504. When the plug-in end of the arc-shaped inserting strip 507 is inserted into the arc groove 506 of the arc-shaped block 504, the plug-in rod 602 forms a mechanical connection with the push-in hole through the through hole 601; this connection is physical, which ensures the stability of the arc-shaped inserting strip 507.

[0050] like Figure 5 and Figure 6 As shown, one end of the plug-in rod 602 faces the push-in hole, and after insertion, the plug-in rod 602 enters the push-in hole and is locked, thereby firmly locking the arc-shaped inserting strip 507 and the arc-shaped block 504 together; at this time, the stability of the plug-in rod 602 and the elastic force of the second spring 603 ensure that after locking, the arc-shaped inserting strip 507 will not fall off easily even if it is subjected to external force; this self-locking mechanism effectively prevents the arc-shaped inserting strip 507 from accidentally falling off during operation, thereby improving the safety of the overall structure, especially in dynamic application environments.

[0051] like Figure 5 and Figure 6 As shown, specifically, the lower surface of the protruding block 503 is provided with a second inclined surface. During the lateral displacement of the protruding block 503, the setting of the second inclined surface enables the plug-in rod 602 to move downward until the plug-in rod 602 is guided to align with the push-in hole. When the plug-in rod 602 is aligned with the push-in hole, under the action of the second spring 603, the plug-in rod 602 is quickly inserted into the interior of the push-in hole.

[0052] like Figure 5 and Figure 6As shown, when the protruding block 503 is displaced laterally, the inclination angle of the second inclined surface guides the plug-in rod 602 to move downward; due to the contact between the plug-in rod 602 and the inclined surface, the movement path of the plug-in rod 602 is controlled, thereby accurately guiding it to align with the push-in hole; during the downward movement of the plug-in rod 602, with the help of gravity and the action of the second spring 603, the plug-in rod 602 is accelerated to align with the push-in hole; the second spring 603 applies additional downward pressure when the plug-in rod 602 approaches the push-in hole, ensuring that it quickly enters the inside of the push-in hole; the design of the plug-in rod 602 and its geometric relationship with the push-in hole enable the plug-in rod 602 to automatically align when approaching the push-in hole; the design of the second inclined surface reduces the risk of mis-insertion or jamming due to incorrect angles.

[0053] like Figure 5 and Figure 6 As shown, the design of the second inclined surface ensures that the insertion rod 602 maintains the correct alignment during the movement, thereby improving the insertion accuracy and reducing the failure rate caused by incorrect alignment.

[0054] like Figure 5 and Figure 6 As shown, a transverse through hole 604 is provided inside the arc block 504, the transverse through hole 604 is perpendicular to the through hole 601, and the transverse through hole 604 is connected to the bottom of the through hole 601, and a latch 605 is provided inside the transverse through hole 604, and a first inclined surface 606 is provided on one end of the latch 605 close to the through hole 601. The design of the first inclined surface 606 can apply force to the plug rod 602 in a progressive manner when the latch 605 is inserted.

[0055] like Figure 5 and Figure 6 As shown, when the latch 605 is pushed into the transverse through hole 604, the first inclined surface 606 will act on the plug-in rod 602 to move it toward the direction of the push-in hole; this movement force prompts the plug-in rod 602 to enter the push-in hole; once the plug-in rod 602 is fully inserted into the push-in hole, it will form a locked state with the latch 605 to ensure a tight connection between the arc-shaped insert 507 and the arc-shaped block 504; this process utilizes the inclined surface of the latch 605 to achieve smooth and stable locking, so that the self-locking function can be effectively performed; the action of the latch 605 in the transverse through hole 604 and the self-locking design of the plug-in rod 602 effectively prevent the insert from accidentally falling off due to vibration or external force, thereby enhancing the safety and stability of the structure.

[0056] like Figure 7As shown, a through hole 7 is provided at the center of the fixed block 501 for the bottom of the second rod 302 to pass through, and a sealing ring 8 is provided on the second rod 302. The through hole 7 at the center of the fixed block 501 allows the second rod 302 to pass freely while maintaining guidance and support for the second rod 302; the inner diameter of the through hole 7 matches the outer ring of the second rod 302, ensuring the stability of the movement.

[0057] like Figure 7 As shown, the inner ring size of the sealing ring 8 matches the outer ring size of the second rod body 302, and the outer ring of the sealing ring 8 matches the inner diameter size of the through hole 7; thus, a good sealing contact can be formed; the design of the sealing ring 8 ensures that there will be no leakage of liquid or gas when the second rod body 302 moves.

[0058] like Figure 8 As shown, a removable filter screen 9 is provided inside the connecting pipe 2. Specifically, a support column 10 is fixedly installed inside the connecting pipe 2, and a transverse mounting column 11 is provided on the support column 10. The support column 10 is fixedly installed inside the connecting pipe 2 to provide a stable supporting structure; the transverse mounting column 11 is connected to the support column 10 to form a transverse support, which can effectively bear the weight of the filter screen 9 and maintain its position; the transverse mounting column 11 matches the mounting sleeve 12 arranged at the center position of the filter screen 9, and the transverse mounting column 11 and the mounting sleeve 12 are clamped together.

[0059] like Figure 8 As shown, the mounting sleeve 12 at the center of the filter 9 matches the transverse mounting column 11, allowing the filter 9 to be firmly assembled on the supporting structure; the snap-on design ensures that the filter 9 is easy to install and disassemble, and can be quickly replaced and cleaned.

[0060] Working principle: During installation, the user first assembles the first rod body 301 and the second rod body 302 together through the connecting seat 303, and obtains the connecting rod 3 with the electronic meter 1.

[0061] Then align the bottom of the connecting rod 3 with the through hole 7 in the fixing block 501, and align and insert the protruding block 503 into the limiting groove 505, and then rotate the connecting rod 3 laterally so that the protruding block 503 on the ring 502 is misaligned with the limiting groove 505 until it enters the arc groove 506, and the arc groove 506 is used to limit the longitudinal displacement of the protruding block 503.

[0062] During the continuous rotation of the connecting rod 3, the protruding block 503 squeezes the arc-shaped inserting strip 507, so that the arc-shaped inserting strip 507 is in a certain compression state; when pressure is continuously applied to the compressed end of the inserting strip, the plug-in end of the arc-shaped inserting strip 507 can pass through the fixed ring 508 and the outlet of the arc groove 506 in turn, and finally cover the limiting groove 505 and enter the inside of another arc-shaped block 504; then the arc-shaped inserting strip 507 is locked inside the arc groove 506 by using the plug-in self-locking component 6.

[0063] 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 combined valve flow meter, comprising a connecting pipe (2) and an electronic meter (1), wherein the meter and the connecting pipe (2) are connected via a connecting rod (3), a metering module (4) is provided at the bottom of the connecting rod (3), and the metering module (4) penetrates and extends into the interior of the connecting pipe (2), characterized in that: The bottom of the connecting rod (3) and the radial surface of the connecting pipe (2) are detachably connected via a connecting component (5), the connecting component (5) comprising a fixing block (501) arranged on the radial surface of the connecting pipe (2) and a collar (502) arranged on the connecting rod (3), the radial surface of the collar (502) being provided with at least two protruding blocks (503), the fixing block (501) being provided with arc blocks (504) matching the number of the protruding blocks (503), and a limiting groove (505) matching the protruding blocks (503) being formed between two adjacent arc blocks (504) , the limiting groove (505) is used for allowing the protruding block (503) to generate longitudinal displacement, the inner surface of the arc block (504) is provided with an arc groove (506), and the cross-sectional size of the arc groove (506) matches the cross-sectional size of the protruding block (503); the protruding block (503) is aligned with and inserted into the limiting groove (505), and the second rod body (302) is rotated horizontally, so that the protruding block (503) on the collar (502) is misaligned with the limiting groove (505) until it enters the interior of the arc groove (506), and the arc groove (506) is used to limit the longitudinal displacement of the protruding block (503); An arc-shaped inserting strip (507) is slidably arranged in the arc groove (506) of the arc-shaped block (504), a fixing ring (508) is arranged in the arc groove (506) of the arc-shaped block (504), two ends of the arc-shaped inserting strip (507) respectively form a plug-in end and a pressure-bearing end, the plug-in end of the arc-shaped inserting strip (507) passes through the fixing ring (508), and an enlarged portion is formed on the pressure-bearing end of the arc-shaped inserting strip (507).

2. The combined valve flow meter according to claim 1, characterized in that: The enlarged portion of the arc-shaped insert strip (507) is connected to the fixing ring (508) via a first spring (509).

3. The combined valve flow meter according to claim 1, characterized in that: The cross-sectional area of ​​the arc-shaped inserting strip (507) expands uniformly and gradually from the plug-in end to the pressure-bearing end; the cross-sectional dimension of the pressure-bearing end of the arc-shaped inserting strip (507) is larger than the inner circle dimension of the fixing ring (508).

4. The combined valve flow meter according to claim 1, characterized in that: A plug-in self-locking component (6) for locking the arc-shaped inserting strip (507) is provided in the arc groove (506) of the arc-shaped block (504).

5. The combined valve flow meter according to claim 4, characterized in that: The plug-in self-locking component (6) comprises a through hole (601) arranged in the arc groove (506) of the arc block (504) and a push-in hole arranged on the plug-in end of the arc-shaped inserting strip (507), the through hole (601) and the push-in hole matching each other, a plug-in rod (602) is telescopically arranged inside the through hole (601) of the arc block (504), the plug-in rod (602) is connected to the inner wall of the through hole (601) by a second spring (603), one end of the plug-in rod (602) faces the push-in hole, and the plug-in rod (602) is used to establish a locking connection between the arc-shaped inserting strip (507) and another arc block (504).

6. The combined valve flow meter according to claim 5, characterized in that: A transverse through hole (604) is provided inside the arc block (504), the transverse through hole (604) is connected to the bottom of the through hole (601), a latch (605) is provided inside the transverse through hole (604), and a first inclined surface (606) is provided on one end of the latch (605) close to the through hole (601).

7. The combined valve flow meter according to claim 1, characterized in that: The connecting rod (3) comprises a first rod body (301) and a second rod body (302); the top of the first rod body (301) is connected to the bottom of the meter, and the bottom of the first rod body (301) is connected to the top of the second rod body (302) via a connecting seat (303).

8. The combined valve flow meter according to claim 7, characterized in that: A through hole (7) is provided inside the fixing block (501) for the bottom of the second rod body (302) to pass through, and a sealing ring (8) is provided on the second rod body (302), wherein the inner ring size of the sealing ring (8) matches the outer ring size of the second rod body (302), and the outer ring of the sealing ring (8) matches the inner diameter size of the through hole (7).

9. The combined valve flow meter according to claim 1, characterized in that: A detachable filter screen (9) is provided inside the connecting pipe (2), a support column (10) is provided inside the connecting pipe (2), a transverse mounting column (11) is provided on the support column (10), the transverse mounting column (11) matches a mounting sleeve (12) provided at the center of the filter screen (9), and the transverse mounting column (11) and the mounting sleeve (12) are clamped together.

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