Uniflow meter capable of conveniently adjusting pressure disc

Abstract

The utility model relates to a uniflow meter with a pressure disc convenient to adjust, and relates to the field of uniflow water meters, the uniflow meter comprises a threaded pressing ring, the pressure disc, a sealing ring, an impeller assembly and a meter shell assembly, the meter shell assembly is of a box body structure, the impeller assembly is rotationally connected into the meter shell assembly, an installation step is arranged on the inner wall of the meter shell assembly, and the impeller assembly is located in the installation step; the pressure disc covers the installation step, the sealing ring is arranged between the pressure disc and the installation step, the threaded pressing ring is connected to the meter shell assembly and covers the pressure disc, and when the pressure disc and the installation step jointly extrude the sealing ring, a gap exists between the pressure disc and the installation step. The device has the effect of conveniently rotating the pressure disc.

Description

Technical Field

[0001] The present application relates to the field of single-jet water meters, and in particular to a single-jet water meter with a convenient pressure plate adjustment. Background Art

[0002] A water meter is an instrument used to measure water flow. It consists of a case assembly, a cover plate, a pressure plate, and an impeller assembly. The case assembly is a circular box-shaped structure. The impeller assembly is rotatably connected to the case assembly. The pressure plate cover is mounted on the impeller assembly, which is sealed to the inner wall of the case assembly. The cover plate is mounted on the case assembly. When water flows within the case assembly, it drives the impeller assembly to rotate. By measuring the impeller assembly's rotation speed, the water flow is measured.

[0003] Existing water meters often require pressure plate adjustment during production and use. The size (changing volume), shape (changing water flow), and distribution (changing volume and adjustment angle) of the ribs inside the pressure plate will affect the measurement, resulting in significant differences at different flow points and failure to meet performance requirements. Therefore, testers need to rotate the pressure plate and adjust it to the appropriate angle to reduce the measurement differences at each flow point and meet performance requirements.

[0004] The above-mentioned related technical solutions have the following defects: in order to ensure the sealing between the pressure plate and the case assembly, the pressure plate is installed relatively tightly in the case assembly, and a large friction force needs to be overcome when rotating the pressure plate. Rotating the pressure plate is time-consuming and labor-intensive, causing inconvenience. Utility Model Content

[0005] In order to facilitate the rotation of the pressure disc, the present application provides a single flow meter with convenient adjustment of the pressure disc.

[0006] The present application provides a single flow meter with a convenient pressure plate adjustment, which adopts the following technical solutions:

[0007] A single-flow meter with a convenient pressure plate adjustment includes a threaded pressure ring, a pressure plate, a sealing ring, an impeller assembly and a case assembly. The case assembly is a box structure. The impeller assembly is rotatably connected to the case assembly. An installation step is provided on the inner wall of the case assembly. The impeller assembly is located in the installation step. The pressure plate cover is provided on the installation step. The sealing ring is provided between the pressure plate and the installation step. The threaded pressure ring is connected to the case assembly and covers the pressure plate. When the pressure plate and the installation step jointly squeeze the sealing ring, a gap exists between the pressure plate and the installation step.

[0008] By adopting the above technical solution, an impeller assembly is arranged in the meter case assembly, and a pressure plate is covered on the impeller assembly. By allowing water to flow through the meter case assembly, the water flow impacts the impeller assembly and causes the impeller assembly to rotate. By measuring parameters such as the rotational speed of the impeller assembly, the flow rate can be measured. A mounting step is provided in the meter case assembly, and a sealing ring is provided on the mounting step. When the pressure plate cover is set on the mounting step, the mounting step and the pressure plate jointly squeeze the sealing ring. When the threaded pressure ring is connected to the meter case assembly, the threaded pressure ring presses on the pressure plate, causing the pressure plate to apply stress to the sealing ring. The sealing ring can deform and fill the gap between the pressure plate and the mounting step, thereby reducing the chance of water leakage in the meter case assembly. When the pressure plate needs to be rotated, rotating the pressure plate only requires overcoming the friction between the end face of the pressure plate and the sealing ring, thereby making the rotation of the pressure plate more convenient. The user can flow a fixed flow of water into the single-flow meter and adjust the pressure plate according to the single-flow meter reading so that the single-flow meter can be adjusted to a smaller state.

[0009] Optionally, a mounting groove is provided at the bottom of the pressure plate, and the sealing ring is sleeved outside the mounting groove.

[0010] By adopting the above technical solution, a mounting groove is opened at the bottom of the pressure plate, and the sealing ring is installed in the mounting groove. When the pressure plate is secretly hung in the case assembly and squeezes the sealing ring, the sealing ring can always be located in the mounting groove, reducing the chance of the sealing ring slipping between the pressure plate and the mounting step, and further reducing the chance of the sealing ring detaching from the mounting step, so that the pressure plate and the mounting step maintain better sealing.

[0011] Optionally, a chamfer is provided at the connection between the mounting step and the case assembly, and the sealing ring is clamped in the chamfer.

[0012] By adopting the above technical solution, a chamfer is opened on the installation step so that the sealing ring abuts against the chamfer. When the pressure plate presses on the sealing ring, the chamfer provides support for the sealing ring, thereby causing the sealing ring to deform toward the center of the case assembly, reducing the chance of the sealing ring slipping on the installation step and reducing the chance of a gap between the installation step and the pressure plate.

[0013] Optionally, a tooling hole is provided at the center of a circle on one side of the pressure plate away from the impeller assembly, and a clearance hole is provided on the threaded pressure ring, through which the tooling hole is exposed.

[0014] By adopting the above technical solution, a tooling hole is opened on the pressure plate, and the tooling hole is opened as a non-circular hole. The user can rotate the pressure plate by inserting a tool of corresponding shape into the tooling hole. By opening a clearance hole on the threaded pressure ring, the user can clamp the tool on the pressure plate without removing the threaded pressure ring, which further facilitates use. During the process of rotating the pressure plate, water can continue to flow through the single-flow meter.

[0015] Optionally, the top cover of the pressure plate is provided with an annular gasket, and the threaded pressure ring abuts against the annular gasket.

[0016] By adopting the above technical solution, an annular gasket is set on the top of the pressure plate, so that the annular gasket can seal the gap between the threaded pressure ring and the pressure plate, thereby reducing the chance of water in the case assembly leaking from between the threaded pressure ring and the pressure plate.

[0017] Optionally, a water inlet pipe and a water outlet pipe are connected to the case assembly, and the water inlet pipe and the water outlet pipe are respectively connected to two sides of the case assembly, and the length direction of the water inlet pipe and the water outlet pipe overlap.

[0018] By adopting the above technical solution, by arranging a water inlet pipe and a water outlet pipe on the case assembly, the water flow can remain straight and drive the impeller assembly to rotate during the process of water flowing through the case assembly, thereby reducing the head loss during the movement of the water flow.

[0019] Optionally, a filter is provided in the water inlet pipe.

[0020] By adopting the above technical solution, a filter is set in the water inlet pipe, so that the filter can filter solid impurities in the water flow, thereby reducing the probability of solid impurities entering the case assembly and affecting the rotation of the impeller assembly.

[0021] Optionally, a rotating shaft is provided in the impeller assembly, one end of the rotating shaft is inserted into the bottom surface of the case assembly, and the other end is inserted into the center of the pressure plate, and the rotating shaft is perpendicular to the water inlet pipe.

[0022] By adopting the above technical solution, by setting a rotating shaft in the impeller assembly and making the two ends of the rotating shaft respectively clamped on the meter case assembly and the pressure plate, when the water flow rate is large, the probability of the water flow impacting the impeller assembly and causing the impeller assembly to tilt can be reduced, so that the single-flow meter can detect water flows with higher flow rates.

[0023] In summary, the beneficial technical effects of this application are:

[0024] 1. An impeller assembly is arranged in the meter case assembly, and a pressure plate is covered on the impeller assembly. Water is allowed to flow through the meter case assembly, so that the water flow impacts the impeller assembly and causes the impeller assembly to rotate. By measuring parameters such as the rotational speed of the impeller assembly, the flow rate can be measured. An installation step is arranged in the meter case assembly, and a sealing ring is arranged on the installation step. When the pressure plate cover is arranged on the installation step, the installation step and the pressure plate jointly squeeze the sealing ring. When the threaded pressure ring is connected to the meter case assembly, the threaded pressure ring presses on the pressure plate, so that the pressure plate applies stress to the sealing ring. The sealing ring can deform and fill the gap between the pressure plate and the installation step, thereby reducing the chance of water leakage in the meter case assembly. When the pressure plate needs to be rotated, rotating the pressure plate only requires overcoming the friction between the end face of the pressure plate and the sealing ring, thereby making the pressure plate more convenient to rotate. The user can let the water flow with a fixed flow rate flow into the single-flow meter, and adjust the pressure plate according to the reading of the single-flow meter so that the single-flow meter can be adjusted to a smaller state.

[0025] 2. By opening a mounting groove at the bottom of the pressure plate, the sealing ring is placed in the mounting groove. When the pressure plate is secretly hung in the case assembly and squeezes the sealing ring, the sealing ring can always be located in the mounting groove, reducing the chance of the sealing ring slipping between the pressure plate and the mounting step, and further reducing the chance of the sealing ring detaching from the mounting step, so that the pressure plate and the mounting step maintain better sealing performance;

[0026] 3. By opening a chamfer on the installation step, the sealing ring is abutted against the chamfer. When the pressure plate presses on the sealing ring, the chamfer provides support for the sealing ring, thereby causing the sealing ring to deform toward the center of the case assembly, reducing the chance of the sealing ring slipping on the installation step and the chance of a gap between the installation step and the pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The explosion of the embodiment of the present application Figure 1 .

[0028] Figure 2 The explosion of the embodiment of the present application Figure 2 .

[0029] Figure 3 This is a schematic diagram of the structure of the pressure plate in the embodiment of the present application. Figure 1 .

[0030] Figure 4 This is a schematic diagram of the structure of the pressure plate in the embodiment of the present application. Figure 2 .

[0031] Figure 5 It is a cross-sectional schematic diagram of the case assembly of an embodiment of the present application.

[0032] Figure 6 yes Figure 5 Enlarged view of part A.

[0033] Figure 7 It is a schematic diagram of the installation position of the existing sealing ring.

[0034] Figure 8 This is a schematic diagram of the installation position of the sealing ring in an embodiment of the present application.

[0035] Figure numerals: 1. threaded pressure ring; 11. threaded barrel; 12. cover plate; 121. clearance hole; 2. annular gasket; 3. pressure plate; 31. mounting groove; 32. tooling hole; 33. bottom plate; 4. sealing ring; 5. impeller assembly; 51. rotating shaft; 6. case assembly; 61. water inlet pipe; 611. filter screen; 62. water outlet pipe; 63. threaded part; 64. mounting step; 641. chamfer. DETAILED DESCRIPTION

[0036] The present application is further described in detail below with reference to the accompanying drawings.

[0037] The present application discloses a single flow meter that is convenient for adjusting the pressure plate, referring to Figure 1 and Figure 2 The system comprises a threaded pressure ring 1, an annular gasket 2, a pressure plate 3, a sealing ring 4, an impeller assembly 5, and a case assembly 6. The case assembly 6 is a circular box-shaped structure. The threaded pressure ring 1 is mounted on the case assembly 6 and is detachably connected to the case assembly 6. An inlet pipe 61 and an outlet pipe 62 are connected to the case assembly 6, and the inlet pipe 61 and the outlet pipe 62 are respectively arranged on either side of the case assembly 6. The impeller assembly 5 is rotatably connected to the case assembly 6. After water flows through the inlet pipe 61 and enters the case assembly 6, the water impacts the impeller assembly 5, causing it to rotate. The pressure plate 3 is a circular plate structure and is mounted on the impeller assembly 5. When water flows within the case assembly 6, the impeller assembly 5 rotates. By measuring the number of revolutions of the impeller assembly 5, the flow rate of the water flowing within the case assembly 6 can be displayed. A sealing ring 4 is disposed on the underside of the pressure plate 3 and is used to improve the sealing between the pressure plate 3 and the case assembly 6. The annular gasket 2 is a circular ring structure and is mounted on top of the pressure plate 3. The threaded pressure ring 1 is mounted on the annular gasket 2 and connected to the case assembly 6. A filter 611 is installed in the water inlet pipe 61 to filter solid impurities in the water flow, reducing the chance of solid impurities entering the case assembly 6 and entangled with the impeller assembly 5.

[0038] Reference Figure 1A rotating shaft 51 is disposed at the center of the impeller assembly 5. The rotating shaft 51 extends through the impeller assembly 5, with one end inserted into the bottom surface of the case assembly 6 and the other end inserted into the center of the pressure plate 3. The impeller assembly 5 can be made of a magnetic material. When the impeller assembly 5 rotates, the magnetic material rotates and cuts the magnetic flux lines, thereby facilitating the electronic components to calculate the water flow rate. In other embodiments, the rotating shaft 51 can be disposed through the pressure plate 3. By providing a counter on the rotating shaft 51, the flow rate can be calculated by measuring the rotation speed of the rotating shaft 51.

[0039] Reference Figure 2 The threaded pressing ring 1 includes a threaded barrel 11 and a cover plate 12, the cover plate 12 is connected to one end of the threaded barrel 11, a threaded portion 63 is provided at the opening of the case assembly 6, and the threaded barrel 11 is threadedly connected to the threaded portion 63. The cover plate 12 is used to cover the annular gasket 2.

[0040] Reference Figure 3 、 Figure 4 and Figure 5 The case assembly 6 is provided with a mounting step 64, located in the middle of the case assembly 6, and the impeller assembly 5 is positioned within the mounting step 64. When the pressure plate 3 is installed within the case assembly 6, the pressure plate 3 covers the mounting step 64. A mounting groove 31 is defined at the bottom of the pressure plate 3, and the sealing ring 4 is sleeved within the mounting groove 31 of the pressure plate 3. When the pressure plate 3 is engaged within the case assembly 6, the pressure plate 3 and the mounting step 64 together compress and deform the sealing ring 4, thereby sealing the gap between the pressure plate 3 and the case assembly 6.

[0041] Reference Figure 4 , a plurality of bottom plates 33 are provided on the side of the pressure plate 3 close to the impeller assembly 5. The bottom plates 33 are arranged at equal intervals along the circumferential direction of the pressure plate 3, and the length direction of the bottom plates 33 points to the center of the pressure plate 3. When the reading error of the water meter is large, the user needs to rotate the pressure plate 3 and adjust the position of the bottom plate 33 on the pressure plate 3, so that the reading accuracy on the pressure plate 3 is higher. A tooling hole 32 is provided on the center of the circle of the surface of the side of the pressure plate 3 away from the impeller assembly 5. The user inserts the tool into the tooling hole 32 and can rotate the pressure plate 3 to achieve the effect of adjusting the water meter reading error. A clearance hole 121 is provided at the center of the circle on the cover plate 12. The tooling hole 32 on the surface of the pressure plate 3 is exposed through the clearance hole 121, and the tool can pass through the clearance hole 121 and be inserted into the tooling hole 32.

[0042] Reference Figure 6 、 Figure 7 and Figure 8When the pressure plate 3 is installed in the meter case assembly 6, the pressure plate 3 presses on the sealing ring 4, and there is a gap between the bottom surface of the pressure plate 3 and the mounting step 64. When the user rotates the pressure plate 3, there is no friction between the pressure plate 3 and the mounting step 64, making it easier to rotate the pressure plate 3 and easily turn it to a position with smaller water meter error.

[0043] Reference Figure 6 and Figure 8 A chamfer 641 is formed at the connection between the mounting step 64 and the case assembly 6, and the sealing ring 4 is snapped into and positioned in the chamfer 641. When the pressure plate 3 is installed in the case assembly 6 and squeezes the sealing ring 4, the sealing ring 4 deforms toward the center of the case assembly 6, thereby improving the sealing performance of the contact surface between the pressure plate 3 and the case assembly 6.

[0044] Reference Figure 8 When the sealing ring 4 is installed in the mounting groove 31 of the pressure plate 3, there is a gap between the sealing ring 4 and the outer wall of the pressure plate 3. When the pressure plate 3 rotates, it is only necessary to overcome the friction between the end surface of the pressure plate 3 and the sealing ring 4. The side wall of the pressure plate 3 does not contact the sealing ring 4, and it is more convenient to rotate the pressure plate 3.

[0045] Reference Figure 7 In the prior art, when the pressure plate 3 is installed in the case assembly 6, the lower surface of the pressure plate 3 abuts against the mounting step 64. A slot is provided on the inner wall of the opening of the case assembly 6. The upper surface of the pressure plate 3 is set higher than the inner bottom surface of the slot. The upper surface of the pressure plate 3 is covered with an annular gasket 2, and a threaded pressure ring 1 is provided on the upper side of the annular gasket 2. When the threaded pressure ring 1 is threadedly connected to the case assembly 6, the threaded pressure ring 1 applies vertical downward pressure to the annular gasket 2. At this time, the pressure plate 3 is under pressure, and a large friction force is generated between the upper surface of the pressure plate 3 and the annular gasket 2. A large friction force is also generated between the lower surface of the pressure plate 3 and the mounting step 64. Rotating the pressure plate 3 requires overcoming a large friction force. The greater the tightening force of the threaded pressure ring 1, the higher the overall sealing and integrity. However, it is more difficult to adjust the angle of the pressure plate 2. Conversely, the overall sealing and integrity cannot be guaranteed.

[0046] Reference Figure 8When the cam 3 is in the closed position, the cam 3 is in the closed position, and the cam 3 is in the closed position, so that the cam 3 is in the open position, and the cam 3 is in the closed position.

[0047] Reference Figure 8 When the pressure plate 3 is installed in the case assembly 6 and the annular gasket 2 is placed on the pressure plate 3, the threaded pressure ring 1 is tightened, and the threaded pressure ring 1 applies a downward force to the annular gasket 2, and the annular gasket 2 applies a downward force to the pressure plate. When the pressure plate 3 moves downward to a position flush with the groove on the inner wall of the opening of the case assembly 6, it reaches the final position. At the same time, it also limits the position of the pressure plate in the vertical direction. The sealing ring 4 deforms to ensure sealing, and the tightening force of the threaded pressure ring 1 is continuously increased. The annular gasket 2 and the groove on the inner wall of the opening of the case assembly 6 are tighter, ensuring the overall integrity. However, adjusting the angle of the pressure plate 3 has nothing to do with the tightening force of the threaded pressure ring 1, which greatly reduces the difficulty of adjustment.

[0048] The implementation principle of the embodiment of the present application is: by opening a chamfer 641 between the case assembly 6 and the installation step 64, the chamfer 641 is made to abut the sealing ring 4. When the user rotates the pressure plate 3, the friction force on the pressure plate 3 is small, and it is more convenient to rotate the pressure plate 3. There is a gap between the pressure plate 3 and the installation step 64, and the sealing ring 4 does not contact the outer wall of the pressure plate 3. The threaded pressure ring 1 presses on the annular gasket 2 and the pressure plate 3, so that the pressure plate 3 provides a larger pressure on the sealing ring 4, which can improve the overall sealing of the water meter and reduce the chance of water flowing out from the inside of the case assembly 6.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A single flow meter with a convenient pressure plate adjustment, characterized by: The invention comprises a threaded pressing ring (1), a pressure plate (3), a sealing ring (4), an impeller assembly (5) and a case assembly (6), wherein the case assembly (6) is a box structure, the impeller assembly (5) is rotatably connected in the case assembly (6), an installation step (64) is provided on the inner wall of the case assembly (6), the impeller assembly (5) is located in the installation step (64), the pressure plate (3) is covered on the installation step (64), the sealing ring (4) is provided between the pressure plate (3) and the installation step (64), the threaded pressing ring (1) is connected to the case assembly (6) and is covered on the pressure plate (3), and when the pressure plate (3) and the installation step (64) jointly squeeze the sealing ring (4), a gap is provided between the pressure plate (3) and the installation step (64).

2. A single flow meter with a conveniently adjustable pressure plate according to claim 1, characterized in that: The bottom of the pressure plate (3) is provided with a mounting groove (31), and the sealing ring (4) is sleeved outside the mounting groove (31).

3. The single flow meter with convenient pressure plate adjustment according to claim 2, characterized in that: A chamfer (641) is provided at the connection between the installation step (64) and the watch case assembly (6), and the sealing ring (4) is clamped in the chamfer (641).

4. The single flow meter with convenient pressure plate adjustment according to claim 1, characterized in that: A tooling hole (32) is provided at the center of a circle on one side of the pressure plate (3) away from the impeller assembly (5), and a clearance hole (121) is provided on the threaded pressing ring (1), and the tooling hole (32) is exposed through the clearance hole (121).

5. The single flow meter with convenient pressure plate adjustment according to claim 4, characterized in that: The top cover of the pressure plate (3) is provided with an annular gasket (2), and the threaded pressure ring (1) abuts against the annular gasket (2).

6. The single flow meter with convenient pressure plate adjustment according to claim 1, characterized in that: The case assembly (6) is connected to a water inlet pipe (61) and a water outlet pipe (62). The water inlet pipe (61) and the water outlet pipe (62) are respectively connected to two sides of the case assembly (6). The length direction of the water inlet pipe (61) and the water outlet pipe (62) overlap.

7. The single flow meter with convenient pressure plate adjustment according to claim 6, characterized in that: A filter screen (611) is provided in the water inlet pipe (61).

8. The single flow meter with convenient pressure plate adjustment according to claim 7, characterized in that: The impeller assembly (5) is provided with a rotating shaft (51), one end of the rotating shaft (51) is inserted into the bottom surface of the case assembly (6), and the other end is inserted into the center of the pressure plate (3), and the rotating shaft (51) is perpendicular to the water inlet pipe (61).

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