Flowmeter with filtering function

Abstract

The invention provides a flow meter with a filtering function, and relates to the technical field of flow meters, the flow meter comprises a flow meter main body, a flow converter, a water inlet pipe, a water outlet pipe, a squeezing fixing sleeve, a collecting box, a locking block and a filtering assembly; the flowmeter body is of a cuboid box-shaped structure, a water inlet pipe is arranged at the top of one end of the flowmeter body, and water outlet pipes are symmetrically arranged at the other end of the flowmeter body. By arranging the baffling structure composed of the first baffle plate, the second baffle plate and the third baffle plate, the flow velocity of fluid entering the flowmeter body is slowed down, impact of the fluid on internal components is effectively reduced, meanwhile, primary separation of large-particle impurities is achieved, and the flow rate of the fluid is increased. The purity of the output fluid is further ensured through the design of the filtering assembly, the fluid is allowed to pass through and impurities are prevented from passing through the gap between the flow dividing head and the pipe wall of the inner cavity of the water outlet pipe, and damage of the impurities to downstream equipment or pipelines is effectively prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of flowmeters, in particular to a flowmeter with a filtering function. Background Art

[0002] Flow meters are widely used in industrial production, fluid control and other fields. However, when measuring fluid flow, traditional flow meters often ignore the treatment of impurities in the fluid, resulting in a large amount of impurities in the output fluid. These impurities will not only damage downstream equipment or pipelines, but also affect the measurement accuracy and service life of the flow meter itself.

[0003] In order to solve the above problems, some flow meters with filtering functions have appeared on the market, but these flow meters still have shortcomings in filtering effect, measurement accuracy, maintenance convenience, etc. For example, although some flow meters have filtering functions, the filtering effect is poor and they cannot effectively remove fine particles in the fluid; the measurement accuracy of some flow meters is greatly affected by impurities in the fluid and cannot meet the needs of high-precision measurement; and the maintenance process of some flow meters is relatively cumbersome, and multiple parts need to be disassembled to clean impurities, which reduces maintenance efficiency. Summary of the invention

[0004] The present invention relates to a flow meter with a filtering function, which is provided with a baffle structure composed of a first baffle, a second baffle and a third baffle, so that the flow velocity of the fluid is slowed down when entering the flow meter body, effectively reducing the impact of the fluid on the internal components, and realizing the preliminary separation of large particle impurities. In addition, the design of the filtering component further ensures the purity of the output fluid, and the gap between the diverter head and the inner wall of the water outlet pipe allows the fluid to pass through while preventing the impurities from passing through, effectively preventing the impurities from damaging the downstream equipment or pipelines.

[0005] The present invention provides a flow meter with a filtering function, specifically comprising: a flow meter body, a flow converter, a water inlet pipe, a water outlet pipe, a squeezing and fixing sleeve, a collecting box, a locking block and a filtering assembly; the flow meter body is a rectangular box-shaped structure, a water inlet pipe is provided on the top of one end of the flow meter body, and a water outlet pipe is symmetrically provided on the other end of the flow meter body; a flow converter is provided on the flow meter body between the water inlet pipe and the water outlet pipe; a collecting box is provided at the lower end of the inner cavity of the flow meter body, the collecting box is laterally slidably inserted in the flow meter body, and a locking block is fixedly installed on the side wall of the flow meter body above the outer end of the collecting box; a filtering assembly is built into the water outlet pipe, the end of the water outlet pipe is screwed on the squeezing and fixing sleeve, and the squeezing and fixing sleeve clamps the filtering assembly in the water outlet pipe.

[0006] Optionally, windows are respectively embedded in the front and rear side walls of the flow meter body at positions above the collection box; A drawer groove is provided on one side of the flow meter body at a position corresponding to the location of the collection box, and side sliding grooves are provided horizontally on the upper ends of the groove walls at the left and right ends of the drawer groove; The portion of the drawer slot communicating with the upper end of the inner cavity of the flow meter body is provided with a vertical sedimentation section, and the sedimentation section is provided with a first baffle, a second baffle and a third baffle inclined inward and downward from top to bottom. The first baffle is located at one end close to the water inlet pipe, and the lower end of the first baffle is an arc structure bent downward, the lower end of the second baffle extends to a position below the first baffle, and the third baffle extends to a position below the second baffle close to the middle of the inner cavity of the flow meter body.

[0007] Optionally, one end of the sensor of the flow converter is rotatably connected to a swirl sensing impeller, and the swirl sensing impeller is built into the inner cavity of the flow meter body, and the inner cavity of the flow meter body is a circular structure adapted to the swirl sensing impeller.

[0008] Optionally, the outer end of the water outlet pipe is a water outlet threaded end, the outer wall of the water outlet threaded end is provided with threads, and the bottom of the inner end of the water outlet pipe is a slope structure inclined toward the inner cavity of the flow meter body.

[0009] Optionally, one end of the tightening fixing sleeve is an external threaded end, and the other end is an internal threaded end, the external threaded end is screwed onto the thread of the water outlet pipe, the internal threaded end is connected to the external water pipe, the inner diameter of the external threaded end is larger than the inner diameter of the internal threaded end, and the inner diameter of the internal threaded end is smaller than the inner diameter of the water outlet pipe.

[0010] Optionally, side clamping blocks are respectively provided at the upper ends of the side walls at both ends of the collection box, and the side clamping blocks are slidably engaged in the side sliding grooves; A handle block is vertically provided on the outer side wall of the collection box, a handle rod is vertically provided on the outer side wall of the handle block, two locking rods parallel to each other are vertically slidably provided in the handle block, a retaining ring is fixedly provided on the locking rod above the handle block, a first spring is sleeved on the locking rod between the retaining ring and the handle block, a connecting plate is fixedly connected between the lower ends of the two locking rods, and a locking block is provided above the locking rod; The top of one end of the collection box away from the handle block extends horizontally outward and is provided with an associated sealing plate. The upper end of the associated sealing plate is flush with the upper end of the collection box, and the associated sealing plate slides vertically through the side wall of the other end of the flow meter body. The bottom of the inner cavity of the collection box is an inclined structure inclined downward toward the side where the handle block is located. An upper and lower discharge port is opened at one end of the bottom of the inner cavity of the collection box close to the handle block. When the collection box is pulled out, the discharge port is exposed to the outside, and the associated sealing plate separates and seals the upper and lower inner cavity of the flow meter body.

[0011] Optionally, a locking groove is vertically provided on the bottom plane of the locking block at a position corresponding to the locking rod, and a guiding inclined groove is extended outwardly at an outer edge of the locking groove close to the notch.

[0012] Optionally, the filter assembly is a T-ring structure, and the filter assembly is embedded in the end of the inner tube of the water outlet pipe. A fixed frame is provided in the middle of the filter assembly, and a buffer rod is vertically slidably inserted in the middle of the fixed frame. The inner end of the buffer rod is fixedly connected with a conical diverter head, and a second spring is mounted on the buffer rod. The diverter head is located at the junction of the water outlet pipe and the inner cavity of the flow meter body, and a gap is left between the edge of the diverter head and the inner cavity wall of the water outlet pipe.

[0013] The present invention provides a flow meter with a filtering function, which has the following beneficial effects: 1. The present invention provides a baffle structure consisting of a first baffle, a second baffle and a third baffle, so that the flow velocity of the fluid is slowed down when entering the flow meter body, effectively reducing the impact of the fluid on the internal components and achieving the preliminary separation of large particle impurities. The design of the filter component further ensures the purity of the output fluid. Through the gap between the diverter head and the inner wall of the water outlet pipe, the fluid is allowed to pass through while impurities are blocked, effectively preventing impurities from damaging downstream equipment or pipelines.

[0014] 2. The combined use of the swirl sensing impeller and the flow converter in the present invention can accurately detect the flow of the fluid and provide reliable data support for industrial production and fluid control.

[0015] 3. The design of the collection box in the present invention enables the impurities deposited at the bottom of the flow meter body to be collected centrally, which is convenient for subsequent cleaning and processing. The structure of the collection box sliding laterally along the side slide groove makes the cleaning process more convenient and improves maintenance efficiency.

[0016] 4. The associated sealing plate in the present invention can separate and seal the inner cavity of the flow meter body from top to bottom when the collecting box is pulled out, effectively preventing fluid leakage and ensuring the stable operation of the flow meter and the safety of the working environment.

[0017] 5. The flow meter body of the present invention adopts a rectangular box-shaped structure, which is compact, easy to install and arrange, and can adapt to various complex working environments. The design of the squeeze fixing sleeve makes the connection between the water outlet pipe and the external water pipe more stable and reliable, avoiding leakage problems caused by loose connection.

[0018] In summary, the flow meter with filtering function achieves multiple beneficial effects such as efficient filtration, accurate measurement, convenient cleaning, and prevention of leakage through its unique design and functions, providing efficient and reliable solutions for industrial production, fluid control and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0020] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached picture: Figure 1 A schematic diagram of the first axial view of the present invention is shown; Figure 2 It shows a schematic diagram of the axial structure of the collecting box and the flow meter body of the present invention in a downwardly moved and separated state; Figure 3 The present invention shows Figure 2 A is a schematic diagram of the structure of the enlarged part; Figure 4 It shows an axial structural schematic diagram of the present invention in a state where the squeeze fixing sleeve and the water outlet pipe are separated; Figure 5 It shows a schematic diagram of the axial structure of the flow meter body of the present invention in a half-cut apart state; Figure 6 It shows a schematic diagram of the axial structure of the flow meter body in a half-section state of the present invention; Figure 7 It shows a schematic diagram of the main structure of the flow meter body in a half-section state of the present invention; Figure 8 The schematic diagram of the axial structure of the filter assembly and the collecting box of the present invention in the separated state from the device is shown.

[0022] Reference numerals list 1. flow meter body; 101. viewing window; 102. drawer slot; 103. side slide slot; 104. first baffle; 105. second baffle; 106. third baffle; 2. Flow converter; 201. Swirl flow sensing impeller; 3. Water inlet pipe; 4. Water outlet pipe; 401. Water outlet thread end; 5. Squeeze and tighten the fixing sleeve; 501, external thread end; 502, internal thread end; 6. Collection box; 601. Side clamp block; 602. Associated sealing plate; 603. Discharge port; 604. Handle block; 605. Handle bar; 606. Lock bar; 607. First spring; 608. Connecting plate; 609. Stop ring; 7. Locking block; 701. Locking slot; 702. Guide inclined slot; 8. Filter assembly; 801. Fixing frame; 802. Buffer rod; 803. Diverter head; 804. Second spring. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1: Please refer to Figures 1 to 8 : The present invention proposes a flow meter with a filtering function, comprising: a flow meter body 1, a flow converter 2, an inlet pipe 3, an outlet pipe 4, a squeeze fixing sleeve 5, a collecting box 6, a locking block 7 and a filtering assembly 8; the flow meter body 1 is a rectangular box-shaped structure, a water inlet pipe 3 is provided on the top of one end of the flow meter body 1, and a water outlet pipe 4 is symmetrically provided on the other end of the flow meter body 1; a flow converter 2 is provided on the flow meter body 1 between the inlet pipe 3 and the outlet pipe 4; a collecting box 6 is provided at the lower end of the inner cavity of the flow meter body 1, the collecting box 6 is laterally slidably inserted in the flow meter body 1, and a locking block 7 is fixedly installed on the side wall of the flow meter body 1 above the outer end of the collecting box 6; a filtering assembly 8 is built in the outlet pipe 4, the end of the outlet pipe 4 is screwed to the squeeze fixing sleeve 5, and the squeeze fixing sleeve 5 clamps and fixes the filtering assembly 8 in the outlet pipe 4.

[0025] The front and rear side walls of the flow meter body 1 are respectively embedded with windows 101 at positions above the collecting box 6; A drawer slot 102 is provided on one side of the flow meter body 1 at a position corresponding to the collection box 6, and side sliding slots 103 are provided horizontally on the upper ends of the slot walls at the left and right ends of the drawer slot 102; The portion of the drawer slot 102 communicating with the upper end of the inner cavity of the flow meter body 1 is provided with a vertical sedimentation section, on which the first baffle 104, the second baffle 105 and the third baffle 106 inclined inward and downward are provided in sequence from top to bottom. The first baffle 104 is located at one end close to the water inlet pipe 3, and the lower end of the first baffle 104 is a downwardly bent arc structure, the lower end of the second baffle 105 extends to a position below the first baffle 104, and the third baffle 106 extends to a position below the second baffle 105 close to the middle of the inner cavity of the flow meter body 1.

[0026] Among them, one end of the sensor of the flow converter 2 is rotatably connected to the swirl sensing impeller 201, and the swirl sensing impeller 201 is built in the inner cavity of the flow meter body 1. The inner cavity of the flow meter body 1 is a circular structure adapted to the swirl sensing impeller 201.

[0027] The outer end of the water outlet pipe 4 is a water outlet threaded end 401 , the outer wall of the water outlet threaded end 401 is provided with threads, and the bottom of the inner end of the water outlet pipe 4 is a slope structure inclined toward the inner cavity of the flow meter body 1 .

[0028] Among them, one end of the squeezing fixing sleeve 5 is an external threaded end 501, and the other end is an internal threaded end 502. The external threaded end 501 is screwed onto the thread of the water outlet pipe 4, and the internal threaded end 502 is connected to the external water pipe. The inner diameter of the external threaded end 501 is larger than the inner diameter of the internal threaded end 502, and the inner diameter of the internal threaded end 502 is smaller than the inner diameter of the water outlet pipe 4.

[0029] Wherein, side clamping blocks 601 are respectively provided at the upper ends of the left and right side walls of the collection box 6, and the side clamping blocks 601 are slidably clamped in the side sliding grooves 103; A handle block 604 is vertically provided on the outer side wall of the collection box 6, a handle rod 605 is vertically provided on the outer side wall of the handle block 604, two parallel locking rods 606 are vertically slidably provided in the handle block 604, a retaining ring 609 is fixedly provided on the locking rod 606 above the handle block 604, a first spring 607 is sleeved on the locking rod 606 between the retaining ring 609 and the handle block 604, a connecting plate 608 is fixedly connected between the lower ends of the two locking rods 606, and a locking block 7 is provided above the locking rod 606; The top of one end of the collecting box 6 away from the handle block 604 extends horizontally outward and is provided with an associated sealing plate 602. The upper end of the associated sealing plate 602 is flush with the upper end of the collecting box 6. The associated sealing plate 602 slides vertically through the side wall of the other end of the flow meter body 1. The bottom of the inner cavity of the collecting box 6 is an inclined structure inclined downward toward the side where the handle block 604 is located. The bottom of the inner cavity of the collecting box 6 is provided with a discharge port 603 that runs through the upper and lower parts at one end close to the handle block 604. When the collecting box 6 is pulled out, the discharge port 603 is exposed to the outside, and the associated sealing plate 602 separates and seals the inner cavity of the flow meter body 1 from top to bottom.

[0030] A locking groove 701 is vertically provided on the bottom plane of the locking block 7 at a position corresponding to the locking rod 606 , and a guiding inclined groove 702 is extended outwardly from the outer edge of the locking groove 701 close to the notch.

[0031] Embodiment 2, on the basis of embodiment 1, the filter assembly 8 is a T-ring structure, the filter assembly 8 is embedded in the inner tube end of the outlet pipe 4, a fixing frame 801 is provided in the middle of the filter assembly 8, a buffer rod 802 is vertically slidably inserted in the middle of the fixing frame 801, a conical diverter 803 is fixedly connected to the inner end of the buffer rod 802, a second spring 804 is sleeved on the buffer rod 802, the diverter 803 is located at the junction of the outlet pipe 4 and the inner cavity of the flow meter body 1, a gap is left between the edge of the diverter 803 and the inner cavity wall of the outlet pipe 4, and the fluid measured by the flow continues to flow. The fluid continues to flow toward the outlet pipe 4. At the end of the outlet pipe 4, the fluid first passes through the filter assembly 8. The fixing frame 801 in the filter assembly 8 supports the buffer rod 802 and the conical diverter head 803. The diverter head 803 pushes the buffer rod 802 outward under the action of the fluid pressure, compressing the second spring 804. The gap between the edge of the diverter head 803 and the inner wall of the outlet pipe 4 allows the fluid to pass through, but prevents impurities from passing through. The filtered fluid continues to flow toward the squeezing fixing sleeve 5, and is finally connected to the external water pipe through the external threaded end 501 and the internal threaded end 502 to realize the output of the fluid.

[0032] The working principle of this embodiment: When the fluid enters the flow meter body 1 from the water inlet pipe 3, it first passes through the baffle structure composed of the first baffle 104, the second baffle 105 and the third baffle 106. This structure can not only slow down the flow rate of the fluid and reduce the impact force of the fluid on the internal components of the flow meter, but also preliminarily separate large particles of impurities in the fluid. The preliminarily separated impurities sink due to gravity in the sedimentation section and finally settle at the bottom of the flow meter body 1. After being baffled and settled, the fluid flows through the swirl sensing impeller 201. The swirl sensing impeller 201 rotates with the flow of the fluid, and its rotation speed is proportional to the fluid flow rate. The flow converter 2 detects the rotation speed of the swirl sensing impeller 201, thereby accurately calculating the fluid flow rate; The fluid after flow measurement continues to flow to the outlet pipe 4. At the end of the outlet pipe 4, the fluid first passes through the filter assembly 8. The fixing frame 801 in the filter assembly 8 supports the buffer rod 802 and the conical diverter head 803. The diverter head 803 pushes the buffer rod 802 outward under the action of the fluid pressure, compressing the second spring 804. The gap between the edge of the diverter head 803 and the inner wall of the outlet pipe 4 allows the fluid to pass through, but prevents impurities from passing through. The filtered fluid continues to flow to the squeeze fixing sleeve 5, and is finally connected to the external water pipe through the external thread end 501 and the internal thread end 502 to achieve the output of the fluid. Impurities deposited at the bottom of the flow meter body 1 can be collected by the collection box 6, and the collection box 6 can be slid out horizontally along the side slide groove 103 to facilitate cleaning of impurities. When the collection box 6 needs to be cleaned, pull the handle 605 to make the locking rod 606 slide upward along the handle block 604 and disengage from the locking groove 701 of the locking block 7. Then, the collection box 6 can be pulled out of the drawer groove 102. During the pulling-out process, the discharge port 603 is exposed to the outside, which is convenient for discharging impurities in the collection box 6. At the same time, the associated sealing plate 602 separates and seals the inner cavity of the flow meter body 1 from top to bottom to prevent fluid leakage.

[0033] In this article, there are a few points to note: 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0034] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0035] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flow meter with filtering function, characterized in that: include: A flow meter body (1), a flow converter (2), a water inlet pipe (3), a water outlet pipe (4), a squeeze fixing sleeve (5), a collection box (6), a locking block (7) and a filter assembly (8); the flow meter body (1) is a rectangular box-shaped structure, a water inlet pipe (3) is provided at the top of one end of the flow meter body (1), and a water outlet pipe (4) is symmetrically provided at the other end of the flow meter body (1); a flow converter (2) is provided on the flow meter body (1) between the water inlet pipe (3) and the water outlet pipe (4); a collection box (6) is provided at the lower end of the inner cavity of the flow meter body (1), the collection box (6) is laterally slidably inserted in the flow meter body (1), and a locking block (7) is fixedly installed on the side wall of the flow meter body (1) above the outer end of the collection box (6); a filter assembly (8) is built into the water outlet pipe (4), the end of the water outlet pipe (4) is screwed to the squeeze fixing sleeve (5), and the squeeze fixing sleeve (5) clamps and fixes the filter assembly (8) in the water outlet pipe (4).

2. The flow meter with filtering function according to claim 1, characterized in that: The front and rear end side walls of the flow meter body (1) are respectively embedded with windows (101) at positions above the collecting box (6); A drawer groove (102) is provided on one side of the flow meter body (1) at a position corresponding to the location of the collection box (6), and side sliding grooves (103) are provided horizontally at the upper ends of the groove walls at both ends of the drawer groove (102); The portion of the drawer groove (102) communicating with the upper end of the inner cavity of the flow meter body (1) is provided with a vertical sedimentation section, and the sedimentation section is provided with a first baffle (104), a second baffle (105) and a third baffle (106) which are inclined inward and downward from top to bottom, wherein the first baffle (104) is located at one end close to the water inlet pipe (3), and the lower end of the first baffle (104) is an arc-shaped structure bent downward, the lower end of the second baffle (105) extends to a position below the first baffle (104), and the third baffle (106) extends to a position below the second baffle (105) close to the middle of the inner cavity of the flow meter body (1).

3. The flow meter with filtering function according to claim 1, characterized in that: One end of the sensor of the flow converter (2) is rotatably connected to a swirl sensing impeller (201), the swirl sensing impeller (201) is built into the inner cavity of the flow meter body (1), and the inner cavity of the flow meter body (1) is a circular structure adapted to the swirl sensing impeller (201).

4. The flow meter with filtering function according to claim 1, characterized in that: The outer end of the water outlet pipe (4) is a water outlet threaded end (401), the outer wall of the water outlet threaded end (401) is provided with threads, and the bottom of the inner end of the water outlet pipe (4) is a slope structure inclined toward the inner cavity of the flow meter body (1).

5. The flow meter with filtering function according to claim 1, characterized in that: One end of the squeeze fixing sleeve (5) is an external thread end (501), and the other end is an internal thread end (502); the external thread end (501) is threaded onto the thread of the water outlet pipe (4), and the internal thread end (502) is connected to the external water pipe; the inner diameter of the external thread end (501) is larger than the inner diameter of the internal thread end (502), and the inner diameter of the internal thread end (502) is smaller than the inner diameter of the water outlet pipe (4).

6. The flow meter with filtering function according to claim 1, characterized in that: The collecting box (6) is provided with side clamping blocks (601) at the upper ends of the side walls at both ends thereof, respectively, and the side clamping blocks (601) are slidably clamped in the side sliding grooves (103); A handle block (604) is vertically provided on the outer side wall of the collection box (6), a handle rod (605) is vertically provided on the outer side wall of the handle block (604), two mutually parallel locking rods (606) are vertically slidably provided in the handle block (604), a retaining ring (609) is fixedly provided on the locking rod (606) above the handle block (604), a first spring (607) is sleeved on the locking rod (606) between the retaining ring (609) and the handle block (604), a connecting plate (608) is fixedly connected between the lower ends of the two locking rods (606), and a locking block (7) is provided above the locking rod (606); The top of one end of the collection box (6) away from the handle block (604) extends horizontally outward and is provided with an associated sealing plate (602). The upper end of the associated sealing plate (602) is flush with the upper end of the collection box (6). The associated sealing plate (602) vertically slides through the side wall of the other end of the flow meter body (1). The bottom of the inner cavity of the collection box (6) is an inclined surface structure inclined downward toward the side where the handle block (604) is located. The bottom of the inner cavity of the collection box (6) is provided with a discharge port (603) extending vertically through the inner cavity of the flow meter body (1) at one end close to the handle block (604). When the collection box (6) is pulled out, the discharge port (603) is exposed to the outside, and the associated sealing plate (602) separates and seals the inner cavity of the flow meter body (1) from top to bottom.

7. The flow meter with filtering function according to claim 1, characterized in that: A locking groove (701) is vertically provided on the bottom plane of the locking block (7) at a position corresponding to the locking rod (606), and a guiding inclined groove (702) is provided extending outwardly at an outer edge position of the locking groove (701) close to the notch.

8. The flow meter with filtering function according to claim 1, characterized in that: The filter assembly (8) is a T-ring structure. The filter assembly (8) is embedded in the inner tube end of the water outlet pipe (4). A fixing frame (801) is provided in the middle of the filter assembly (8). A buffer rod (802) is vertically slidably inserted in the middle of the fixing frame (801). A conical flow diverter (803) is fixedly connected to the inner end of the buffer rod (802). A second spring (804) is sleeved on the buffer rod (802). The flow diverter (803) is located at the junction of the water outlet pipe (4) and the inner cavity of the flow meter body (1). A gap is left between the edge of the flow diverter (803) and the inner cavity wall of the water outlet pipe (4).

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