Positive pressure anti-blocking flowmeter

Abstract

The invention discloses a positive-pressure anti-blocking flow meter, relates to the technical field of flow meters, and aims to solve the problem that impurities are easily attached to key parts of the flow meter, in particular to a filter screen part after entering the flow meter along with fluid. Along with continuous accumulation of impurities at the filter screen, pores of the filter screen are gradually blocked, the resistance of fluid passing through the filter screen is remarkably increased, the continuity and stability of the production process are seriously disturbed, the problem of impurity blockage can be automatically solved through mutual cooperation of the valve element assembly, the filter assembly and the pollution discharge assembly, and the smoothness of internal water flow is ensured. When pressure is increased due to accumulation of internal impurities, automatic pollution discharge can be achieved through the pollution discharge assembly, the filter tank can be effectively cleaned through water flow impact and matching of components in the pollution discharge process, and the electric push rod can assist in enhancing the flushing effect when necessary, so that the filter tank is cleaned more cleanly, and the service life of the flow meter is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of flow meters, in particular to a positive pressure anti-blocking flow meter. Background Art

[0002] A flow meter is an instrument for measuring fluid flow, which can indicate and record the instantaneous flow value of a fluid or the cumulative flow value of a fluid within a certain time interval. The patent document with publication number CN117606580A discloses an anti-clogging flow meter. In the anti-clogging flow meter of the invention, liquid drives the impeller to rotate the shaft, and when the shaft rotates, it drives the scraper shell, the guide part and the shielding part to rotate, and transports impurities to the collection chamber of the collection shell for collection, thereby preventing the first filter part from being blocked by impurities and affecting the detection of the flow meter body.

[0003] Therefore, in many working conditions, impurities enter the flowmeter with the fluid and are easily attached to the key components of the flowmeter, especially the filter. As impurities continue to accumulate at the filter, the pores of the filter are gradually blocked, and the resistance of the fluid passing through the filter increases significantly. This directly leads to an increase in the internal pressure of the flowmeter, which affects the normal delivery of the fluid, causing the flow of the system to fluctuate or even interrupt, seriously interfering with the continuity and stability of the production process.

[0004] In view of the above problems, a positive pressure anti-clogging flow meter is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a positive pressure anti-clogging flow meter, which solves the problem of blockage in the flow meter in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a positive pressure anti-blocking flow meter, comprising a housing, with flanges installed on both sides of the housing; A valve core assembly is installed inside the outer shell, and the valve core assembly includes an inner valve shell, and the inner valve shell is embedded in the inner shell, and a connecting shell is connected to one side of the inner valve shell, and the connecting shell and the inner valve shell are slidably connected, and a top cylinder is embedded in the inner valve shell, and a filter assembly is provided on the top cylinder, and the filter assembly includes a guide groove, and a guide groove is provided on the top cylinder, and a propulsion assembly is embedded in the top cylinder, and an outer chamber is provided between the inner valve shell and the top cylinder, and a first inner chamber is provided inside the top cylinder, and the first inner chamber and the outer chamber are connected through the guide groove, and a guide strip is fixedly connected to the outer surface of the top cylinder, and the guide strip is provided on the outer side of the guide groove; A third inner chamber is provided inside the connecting shell, a separation net is embedded inside the third inner chamber, a sewage outlet and a second inner chamber are provided on the connecting shell, the second inner chamber is connected to the first inner chamber, a filter tank is provided on the connecting shell, and the third inner chamber and the second inner chamber are connected through the filter tank; A sewage discharge component is embedded in the connecting shell, and the sewage discharge component includes an electric push rod. An electric push rod is embedded in the connecting shell, one end of the electric push rod is connected to the top cylinder, and the other end of the electric push rod is connected to an isolation plate, a sealing plate is connected to one side surface of the isolation plate, and a connecting tooth is connected to the bottom end of the sealing plate. A transmission rack passes through the interior of the isolation plate, and the transmission rack is meshed with the connecting tooth. A reset spring is also provided on the transmission rack, and a feedback rod is connected to the top of the transmission rack.

[0007] Preferably, a flap is connected to the other side surface of the isolation plate, the surface of the flap is arranged to be arc-shaped, and the sealing plate and the flap are both movably connected to the isolation plate through connecting teeth.

[0008] Preferably, the transmission rack passes through the interior of the isolation plate and meshes with the connecting teeth. The lateral movement of the transmission rack drives the sealing plate and the flap to operate synchronously. An opening is provided at the top of the isolation plate, and the sealing plate is used to cover the opening.

[0009] Preferably, the feedback rod is connected with a rotating paddle and a feedback rod, the rotating paddle is movably sleeved on the feedback rod, the feedback rod is provided with an impact plate, and the impact plate is arranged between the two groups of rotating paddles.

[0010] Preferably, the guide groove provided on the top cylinder is staggered with the filter groove provided on the connecting shell, the inner valve shell and the connecting shell are slidingly connected, and a waterproof pad is provided at a position of the top cylinder corresponding to the filter groove.

[0011] Preferably, a spiral groove is provided on the propulsion assembly, and the propulsion assembly is rotatably connected to the top cylinder.

[0012] Preferably, the water flow delivered to the interior of the flange first enters the interior of the outer chamber and then enters the interior of the first inner chamber through the guide groove, then flows through the first inner chamber to the second inner chamber, then flows through the filter groove to the interior of the third inner chamber, and finally is discharged.

[0013] Preferably, impurities that flow into the interior of the flange along with the water flow enter the interior of the first inner chamber through the outer chamber and the guide groove, and then are filtered through the filter groove. The impurities are stored in the interior of the second inner chamber until the isolation plate and the sealing plate are separated. The impurities flow from the second inner chamber to the interior of the drain outlet and are finally discharged.

[0014] Preferably, the isolation sheet and the sealing plate are arranged between the second inner chamber and the sewage outlet, and the isolation sheet and the sealing plate are used to separate the second inner chamber and the sewage outlet.

[0015] Preferably, a return spring is connected to the isolation sheet, and the return spring and the transmission rack are fixedly connected together.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a positive pressure anti-blocking flowmeter, which can automatically deal with the problem of impurity blockage through the mutual cooperation of the valve core component, the filter component and the sewage discharge component, thereby ensuring the smoothness of the internal water flow. When the pressure increases due to the accumulation of internal impurities, the sewage can be automatically discharged through the sewage discharge component, and the filter tank can be effectively cleaned through the impact of water flow and the coordination of components during the sewage discharge process. If necessary, the flushing effect can be enhanced by the assistance of an electric push rod, so that the filter tank is cleaned more cleanly. In addition, during the sewage discharge process, the design of the flap can prevent impurities from accumulating at the bottom of the isolation plate, further ensuring the effectiveness of sewage discharge and the long-term stable operation of the equipment, thereby increasing the service life of the flowmeter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the housing and flange of the present invention; Figure 3 It is a schematic diagram of the structure of the top cylinder and the guide strip of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the inner valve housing and the connecting housing of the present invention; Figure 5 It is a schematic diagram of the structure of the guide groove and the filter groove of the present invention; Figure 6 It is a structural schematic diagram of the propulsion assembly of the present invention; Figure 7 It is a schematic diagram of the structure of the electric push rod and the sealing plate of the present invention; Figure 8 It is a schematic diagram of the structure of the isolation sheet and the sealing plate of the present invention in a separated state; Fig. 9 It is a schematic structural diagram of the feedback rod and the impact plate of the present invention.

[0018] In the figure: 11. outer shell; 12. flange; 2. valve core assembly; 21. inner valve shell; 22. top cylinder; 23. connecting shell; 24. guide strip; 3. filter assembly; 31. propulsion assembly; 32. guide groove; 33. first inner chamber; 34. outer chamber; 35. second inner chamber; 36. filter groove; 37. separation net; 38. sewage outlet; 39. third inner chamber; 4. sewage discharge assembly; 41. electric push rod; 42. isolation plate; 43. sealing plate; 44. connecting tooth; 45. transmission rack; 46. return spring; 47. flap; 48. impact plate; 49. rotating paddle; 50. feedback lever. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments 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.

[0020] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0021] Combination Figure 1-Figure 9 A positive pressure anti-blocking flowmeter of the present invention comprises a housing 11, and flanges 12 are installed on both sides of the housing 11; A valve core assembly 2 is installed inside the outer shell 11, and the valve core assembly 2 includes an inner valve shell 21, and the inner valve shell 21 is embedded in the inner shell 11. A connecting shell 23 is connected to one side of the inner valve shell 21, and the connecting shell 23 and the inner valve shell 21 are slidably connected. A top cylinder 22 is embedded in the inner valve shell 21, and a guide groove 32 provided on the top cylinder 22 is staggered with a filter groove 36 provided on the connecting shell 23. The inner valve shell 21 and the connecting shell 23 are slidably connected. A waterproof pad is provided at a position of the top cylinder 22 corresponding to the filter groove 36. Through the design of the water-draining pad, the tightness between the inner valve shell 21 and the connecting shell 23 is increased to prevent internal water seepage. A filter assembly 3 is provided on the top cylinder 22 The filter assembly 3 includes a guide groove 32, a guide groove 32 is provided on the top cylinder 22, a propulsion assembly 31 is embedded in the top cylinder 22, a spiral groove is provided on the propulsion assembly 31, the propulsion assembly 31 and the top cylinder 22 are rotatably connected, when the water flows, the propulsion assembly 31 is driven to rotate, the rotation of the propulsion assembly 31 can be used to stir and mix the liquid, an outer chamber 34 is provided between the inner valve shell 21 and the top cylinder 22, a first inner chamber 33 is provided in the top cylinder 22, the first inner chamber 33 and the outer chamber 34 are connected through the guide groove 32, the outer surface of the top cylinder 22 is fixedly connected with a guide bar 24, and the guide bar 24 is provided on the outer side of the guide groove 32; The distance between the top cylinder 22 and the connecting shell 23 is adjustable. When the top cylinder 22 moves toward one side of the connecting shell 23, the filter groove 36 provided on the top cylinder 22 will be blocked due to the covering of the connecting shell 23. At this time, the internal space of the guide groove 32 becomes smaller. When the guide groove 32 is completely covered by the connecting shell 23, the passage of water is cut off, thereby achieving the effect of cutting off the flow.

[0022] In order to improve the water flow rate, the synergistic effect of the valve core assembly 2, the filter assembly 3 and the sewage discharge assembly 4 is used to achieve efficient removal of impurities, thereby reducing the risk of flow channel blockage and ensuring the smooth flow of the internal fluid. However, traditional flow meters mostly use relatively simple anti-blocking solutions, such as regular manual cleaning of the filter or setting up a simple coarse filtration device at the front end. Among them, regular manual cleaning requires shutdown operations, which is difficult to implement in industrial scenarios with extremely high requirements for production continuity, and frequent disassembly operations are prone to cause secondary damage to the flow meter, thereby affecting its measurement accuracy and reliability. Although the simple coarse filtration device can intercept some large particles of impurities, its filtering effect on fine impurities is limited, and it still cannot fundamentally solve the problem of filter blockage.

[0023] Therefore, a positive pressure flow meter is developed that can automatically deal with impurity blockage, maintain a good internal flow rate in real time, and does not require frequent manual intervention. The specific operation is as follows: A third inner chamber 39 is provided inside the connecting shell 23, and a separation net 37 is embedded inside the third inner chamber 39. A sewage outlet 38 and a second inner chamber 35 are also provided on the connecting shell 23. The second inner chamber 35 is connected to the first inner chamber 33. A filter tank 36 is provided on the connecting shell 23. The third inner chamber 39 and the second inner chamber 35 are connected through the filter tank 36. The water flow transported to the inside of the flange 12 first enters the inside of the outer chamber 34 and then enters the inside of the first inner chamber 33 through the guide groove 32. Then, the impurities flow through the first inner chamber 33 to the second inner chamber 35, and then flow through the filter groove 36 to the inside of the third inner chamber 39, and finally discharged. The impurities that flow into the flange 12 along with the water flow enter the inside of the first inner chamber 33 through the outer chamber 34 and the guide groove 32, and then filter the impurities through the filter groove 36. The impurities are stored in the inside of the second inner chamber 35 until the isolation sheet 42 and the sealing plate 43 are separated. The impurities flow from the second inner chamber 35 to the inside of the sewage outlet 38, and finally discharged; After the liquid enters the inner valve shell 21, the water flow will eventually be discharged through the third inner chamber 39. Some impurities cannot pass through the filter tank 36 and will be intercepted into the second inner chamber 35. As time goes by, a large amount of impurities will accumulate in the second inner chamber 35. When there are impurities in the filter tank 36, the flow efficiency of the water flow will be affected. If the water supply remains unchanged, the pressure inside the second inner chamber 35 will continue to increase. When the pressure reaches the discharge level, the sewage can be discharged through the sewage discharge component 4. Regular sewage discharge ensures the internal fluidity, which increases the service life of the flow meter.

[0024] A sewage discharge component 4 is embedded in the connecting shell 23, and the sewage discharge component 4 includes an electric push rod 41. The electric push rod 41 is embedded in the connecting shell 23, one end of the electric push rod 41 is connected to the top cylinder 22, and the other end of the electric push rod 41 is connected to an isolation plate 42. The isolation plate 42 and the sealing plate 43 are arranged between the second inner chamber 35 and the sewage discharge port 38. The isolation plate 42 and the sealing plate 43 are used to separate the second inner chamber 35 and the sewage discharge port 38. The sealing plate 43 is movably connected to one side of the isolation plate 42 through a hinge shaft, and connecting teeth 44 are connected to both sides of the shaft of the sealing plate 43. A transmission rack 45 runs through the interior of the isolation plate 42, and the transmission rack 45 and the connecting teeth 44 are meshed. A reset spring 46 is connected to the isolation plate 42, one end of the reset spring 46 is fixed to the isolation plate 42, and the other end is connected to the transmission rack 45, and the two are elastically connected as a whole through elastic force; When the transmission rack 45 moves laterally under the action of external force (such as water flow impact force or the driving force of the electric push rod 41), the return spring 46 will be stretched or compressed to store elastic potential energy. Once the external force disappears, the return spring 46 releases the stored energy and generates a reverse elastic force to push the transmission rack 45 back to the initial position; The top of the transmission rack 45 is connected to a feedback rod 50, the feedback rod 50 is connected to a rotating paddle 49 and the feedback rod 50, the feedback rod 50 is provided with an impact plate 48, the rotating paddle 49 is movably sleeved on the feedback rod 50, and the impact plate 48 is provided between the two groups of rotating paddles 49; A flap 47 is connected to the other side surface of the isolation piece 42, and the surface of the flap 47 is arranged to be arc-shaped. The sealing plate 43 and the flap 47 are movably connected to the isolation piece 42 through the connecting teeth 44. The transmission rack 45 passes through the interior of the isolation piece 42 and meshes with the connecting teeth 44. The transmission rack 45 moves laterally to drive the sealing plate 43 and the flap 47 to operate synchronously. An opening is opened at the top of the isolation piece 42, and the sealing plate 43 is used to cover the opening.

[0025] During the use phase, water flows through the inner valve housing 21 to the inside of the inner valve housing 21, and then flows through the guide groove 32 to the inside of the first inner chamber 33. At this time, the propulsion assembly 31 in the first inner chamber 33 rotates under the flow of water, and the impurities in the water are stirred during the rotation process to prevent the impurities from sinking to the bottom. When the propulsion assembly 31 rotates and enters the inside of the second inner chamber 35 with the water flow, the water flow can flow through the filter groove 36 to the inside of the third inner chamber 39, and finally pass through the separation net 37 to be discharged. The impurities cannot pass through the filter groove 36 and will be blocked in the second inner chamber 35. In the long run, a large amount of impurities will be attached to the inner wall of the filter groove 36, and these impurities will cause the through holes on the filter groove 36 to be blocked. When the water flows through the filter groove 36, the cross-sectional area of ​​the flow channel decreases as the impurities gradually accumulate, and the fluid pressure increases significantly. At this time, the impact force generated by the high-pressure water flow directly acts on the sealing plate 43. When the impact force generated by the water pressure exceeds the elastic threshold of the return spring 46, the sealing plate 43 overcomes the supporting force of the return spring and separates from the isolation plate 42. This separation action opens the originally sealed channel, creating conditions for the subsequent sewage discharge process. The water will quickly discharge from the opening position of the guide groove 32 to the inside of the sewage outlet 38. At this time, the water will pass through the second inner chamber 35 and the filter groove 36 and be discharged from the sewage outlet 38. During the process of the water flow, the impurities attached to the inner surface of the filter groove 36 will be washed away by the water flow, which can also be used to clean the filter groove 36. After the filter groove 36 is cleaned, some impurities will still remain after the filter holes have been washed for a period of time. The impurities in the filter tank 36 are removed by the electric push rod 41, and the impurities in the filter tank 36 are removed by the high-pressure flushing method, thereby ensuring the permeability of the filter tank 36. After a period of flushing, the inner valve shell 21 continues to shrink and pulls the top tube 22 until the guide groove 32 on the top tube 22 is completely blocked by the connecting shell 23. At this time, the water flow inside the inner valve shell 21 cannot enter the first inner chamber 33 through the guide groove 32, and the flow is cut off. When the flow is cut off, the sealing plate 43 that has lost the flushing of the water flow will fit together with the isolation plate 42 again. In this way, the inner valve shell 21 is opened again. Because the filter tank 36 has regained its permeability, the pressure inside the second inner chamber 35 cannot flush open the sealing plate 43, and the water flow can be filtered through the filter tank 36 again, and then discharged through the third inner chamber 39.

[0026] In the above-mentioned process of discharging impurities, in order to prevent impurities from accumulating at the bottom end of the isolation plate 42, when the sealing plate 43 is deflected, the flap 47 also follows the deflection. When the flap 47 is deflected and tilted upward, the flap 47 pushes up the impurities accumulated at the bottom end of the sealing plate 43 and discharges them with the flow of water.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positive pressure anti-clogging flow meter, comprising a housing (11), characterized in that: Flanges (12) are installed on both sides of the housing (11); A valve core assembly (2) is installed inside the outer shell (11), and the valve core assembly (2) comprises an inner valve shell (21), and the inner valve shell (21) is embedded in the inner shell (11). A connecting shell (23) is connected to one side of the inner valve shell (21), and the connecting shell (23) and the inner valve shell (21) are slidably connected. A top cylinder (22) is embedded in the inner valve shell (21), and a filter assembly (3) is provided on the top cylinder (22). The filter assembly (3) comprises a guide groove (32), and the top cylinder (22) is provided with a guide groove (32), a propulsion assembly (31) is embedded in the top cylinder (22), an outer chamber (34) is provided between the inner valve housing (21) and the top cylinder (22), a first inner chamber (33) is provided in the top cylinder (22), the first inner chamber (33) and the outer chamber (34) are connected via the guide groove (32), a guide strip (24) is fixedly connected to the outer surface of the top cylinder (22), and the guide strip (24) is provided on the outer side surface of the guide groove (32); A third inner chamber (39) is provided inside the connecting shell (23), a separation net (37) is embedded inside the third inner chamber (39), a sewage outlet (38) and a second inner chamber (35) are also provided on the connecting shell (23), the second inner chamber (35) is communicated with the first inner chamber (33), a filter groove (36) is provided on the connecting shell (23), and the third inner chamber (39) and the second inner chamber (35) are communicated with each other through the filter groove (36); A sewage discharge component (4) is embedded in the connecting shell (23), and the sewage discharge component (4) includes an electric push rod (41). The connecting shell (23) has an electric push rod (41) embedded in the connecting shell, one end of the electric push rod (41) is connected to the top cylinder (22), and the other end of the electric push rod (41) is connected to an isolation plate (42), a sealing plate (43) is connected to one side of the isolation plate (42), and a connecting tooth (44) is connected to the bottom end of the sealing plate (43). A transmission rack (45) passes through the interior of the isolation plate (42), and the transmission rack (45) is meshed with the connecting tooth (44). A return spring (46) is also provided on the transmission rack (45), and a feedback rod (50) is connected to the top end of the transmission rack (45).

2. A positive pressure anti-blocking flowmeter according to claim 1, characterized in that: A flap (47) is connected to the other side surface of the isolation plate (42), and the surface of the flap (47) is arranged to be arc-shaped. The sealing plate (43) and the flap (47) are both movably connected to the isolation plate (42) via connecting teeth (44).

3. A positive pressure anti-blocking flowmeter according to claim 2, characterized in that: The transmission rack (45) penetrates the interior of the isolation plate (42) and meshes with the connecting teeth (44). The transmission rack (45) moves laterally to drive the sealing plate (43) and the flap (47) to operate synchronously. An opening is provided at the top end of the isolation plate (42), and the sealing plate (43) is used to cover the opening.

4. A positive pressure anti-blocking flowmeter according to claim 1, characterized in that: The feedback rod (50) is connected to a rotating paddle (49) and the feedback rod (50); the rotating paddle (49) is movably sleeved on the feedback rod (50); an impact plate (48) is provided on the feedback rod (50); and the impact plate (48) is provided between two groups of rotating paddles (49).

5. The positive pressure anti-clogging flowmeter according to claim 1, characterized in that: The guide groove (32) provided on the top cylinder (22) and the filter groove (36) provided on the connecting shell (23) are arranged in a staggered manner, the inner valve shell (21) and the connecting shell (23) are slidably connected, and a waterproof pad is provided at a position of the top cylinder (22) corresponding to the filter groove (36).

6. A positive pressure anti-blocking flowmeter according to claim 1, characterized in that: The propulsion assembly (31) is provided with a spiral groove, and the propulsion assembly (31) and the top cylinder (22) are rotatably connected.

7. The positive pressure anti-clogging flowmeter according to claim 1, characterized in that: The water flow delivered to the interior of the flange (12) first enters the interior of the outer chamber (34) and then enters the interior of the first inner chamber (33) through the guide groove (32). Thereafter, the water flows through the first inner chamber (33) to the interior of the second inner chamber (35). Thereafter, the water flows through the filter groove (36) to the interior of the third inner chamber (39) and is finally discharged.

8. The positive pressure anti-clogging flowmeter according to claim 1, characterized in that: Impurities that flow into the interior of the flange (12) along with the water flow enter the interior of the first inner chamber (33) through the outer chamber (34) and the guide groove (32), and are then filtered through the filter groove (36). The impurities are stored in the interior of the second inner chamber (35) until the isolation plate (42) and the sealing plate (43) are separated. The impurities flow from the second inner chamber (35) to the interior of the sewage outlet (38) and are finally discharged.

9. The positive pressure anti-blocking flowmeter according to claim 1, characterized in that: The isolation sheet (42) and the sealing plate (43) are arranged between the second inner chamber (35) and the sewage outlet (38), and the isolation sheet (42) and the sealing plate (43) are used to separate the second inner chamber (35) and the sewage outlet (38).

10. The positive pressure anti-clogging flowmeter according to claim 1, characterized in that: A return spring (46) is connected to the isolation sheet (42), and the return spring (46) and the transmission rack (45) are fixedly connected together.

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