Filtering device of fluid flowmeter

Abstract

The invention belongs to the technical field of flow meter filtering, and particularly relates to a liquid flow meter filtering device which comprises a liquid flow meter, one end of the liquid flow meter is communicated with a filtering box, and a filtering mechanism used for filtering and containing impurities in liquid is arranged in the filtering box; the acceleration mechanism is used for compensating pressure loss of liquid in the filter box so as to improve the detection precision of the liquid flowmeter, the acceleration mechanism comprises an acceleration frame which is fixedly connected to the lower wall of the filter box and communicates with the interior of the filter box, and a rotating rod is rotationally connected to the inner bottom wall of the acceleration frame in a penetrating mode; and the rotating rod is in airtight connection with the bottom wall of the acceleration frame. By arranging the acceleration mechanism, liquid can be subjected to acceleration treatment so as to compensate pressure loss when the liquid passes through the filtering device; by arranging the adjusting assembly, the acceleration effect on the fluid can be adjusted in real time according to the change of the liquid flow, and it is guaranteed that the acceleration effect corresponds to the reduction amplitude of the liquid flow speed.

Description

Technical Field

[0001] The invention belongs to the technical field of flow meter filtration, and in particular relates to a liquid flow meter filtration device. Background Art

[0002] A liquid flow meter is an instrument that measures liquid flow. It typically consists of a sensor and a processing unit, and determines flow rate by sensing the liquid flowing through a pipe. Before the liquid is measured by a flow meter, it often needs to be filtered to block larger particles and impurities. This prevents particles and impurities in the liquid from entering the flow meter, which could cause measurement errors or damage the equipment. This improves measurement accuracy and reduces the lifespan of the flow meter.

[0003] For example, a liquid flow meter filtering device disclosed in Chinese patent number CN117619027B includes a liquid flow meter, a filtering mechanism arranged at one end of the liquid flow meter, a supporting mechanism arranged on the outside of the filtering mechanism to support the filtering mechanism, and a driving mechanism arranged on the inner top wall of the supporting mechanism to drive the filtering mechanism to rotate; the above-mentioned filtering device can filter out the liquid mixed in the impurities through the rapid rotation of the impurities, thereby avoiding waste of materials.

[0004] However, the above-mentioned liquid flow meter filter device often causes the following problems when filtering liquid: When the liquid passes through the filter device, the filter medium (usually a filter screen or filter material) in the filter device will produce resistance to the fluid flow, resulting in pressure loss. This pressure loss will cause the fluid flow rate to decrease and the flow rate to decrease, thereby affecting the measurement accuracy of the flow meter; When liquid passes through the filter device, there are differences in the flow rate of the liquid. When the liquid flow rate is large, the flow velocity of the liquid will increase. According to the principles of fluid dynamics, the increase in flow velocity will cause the friction of the liquid in the filter medium to increase, thereby causing the pressure loss of the liquid to increase when passing through the filter device, which in turn leads to a greater reduction in the liquid flow rate and a greater reduction in the flow velocity, making it more difficult to ensure the measurement accuracy of the flow meter. Summary of the Invention

[0005] The purpose of the present invention is to address the problems raised in the above-mentioned background technology and provide a liquid flow meter filter device that can accelerate the liquid to compensate for the pressure loss of the liquid when passing through the filtering device, and at the same time can adjust the acceleration effect on the fluid in real time according to the change of the liquid flow rate to ensure that the acceleration effect corresponds to the amplitude of the reduction in the liquid flow rate.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A liquid flow meter filtering device, comprising: A liquid flowmeter, one end of which is communicated with a filter box, and a filtering mechanism for filtering and storing impurities in the liquid is arranged inside the filter box; An acceleration mechanism for compensating the pressure loss of the liquid in the filter box to improve the detection accuracy of the liquid flowmeter. The acceleration mechanism includes an acceleration frame fixedly connected to the lower wall of the filter box and communicated with the inside of the filter box. A rotating rod is rotatably connected through the inner bottom wall of the acceleration frame, and an airtight connection is formed between the rotating rod and the bottom wall of the acceleration frame. An acceleration fan blade is arranged on the rotating rod; An adjusting component is arranged between the acceleration mechanism and the filtering mechanism for adjusting the compensation degree of the pressure loss of the liquid according to the flow rate of the liquid. The adjusting component includes a guide plate fixedly connected to the lower end of the filter box. A lifting block is slidably connected to the side wall of the guide plate in the vertical direction. A lifting component for driving the lifting block is arranged at the lower end of the filter box. One end of the lifting block away from the guide plate is fixedly connected with a control plate. An abutting inclined rod is rotatably connected to the side wall of the control plate. A hydraulic component for adjusting the inclination angle of the abutting inclined rod is arranged on the control plate. A turntable is fixedly connected to the bottom end of the rotating rod. A transmission component for driving the turntable to rotate is arranged between the abutting inclined rod and the turntable.

[0007] Preferably, a conical flow guiding plate is fixedly connected above the acceleration frame, and one end of the liquid flowmeter is communicated with the inside of the acceleration frame through a connecting pipe.

[0008] Preferably, the filtering mechanism includes a lifting support ring slidably arranged in the vertical direction along the inner wall of the filter box. An annular storage frame body is rotatably connected to the inner wall of the lifting support ring. A conical filter cylinder is fixedly connected to the inner bottom wall of the annular storage frame body. A plurality of filter holes are formed in the peripheral side wall of the conical filter cylinder. A driving component for driving the conical filter cylinder to rotate is arranged at the upper end of the lifting support ring.

[0009] Preferably, the driving component includes a first motor fixedly connected to the upper end of the lifting support ring. A first gear is fixedly connected to the output shaft of the first motor. A transmission gear ring is fixedly connected to the upper end of the annular storage frame body through a connecting plate. The first gear and the transmission gear ring are meshed with each other.

[0010] Preferably, the lifting component includes a screw rod rotatably connected to the lower end of the filter box and in threaded cooperation with the lifting block. A second motor for driving the screw rod is arranged below the filter box.

[0011] Preferably, the hydraulic component includes a second gear fixedly connected to the rotating shaft of the abutting inclined rod. A rack meshing with the second gear is slidably connected to the side wall of the control board. An adjusting telescopic rod for driving the rack to slide in the vertical direction is fixedly connected to the side wall of the control board. Two supporting arc blocks are fixedly connected to the inner wall of the filter box. A first spring is provided between the two supporting arc blocks and the lifting support ring. A hydraulic telescopic rod controlled by the flow rate is provided between one of the supporting arc blocks and the lifting support ring. A liquid infusion pipe is connected between the inside of the hydraulic telescopic rod and the inside of the adjusting telescopic rod. The inside of the adjusting telescopic rod, the inside of the hydraulic telescopic rod, and the inside of the liquid infusion pipe are all filled with hydraulic oil.

[0012] Preferably, the transmission component includes a fixed shaft fixedly connected to the bottom end of the turntable. A collar is rotatably sleeved on the fixed shaft. A connecting rod is fixedly connected to the collar. A piston block moving horizontally is provided below the filter box. The connecting rod is hinged to the piston block. An L-shaped rod is fixedly connected to the end of the piston block away from the connecting rod. A abutting wheel cooperating with the abutting inclined rod is rotatably connected to the top of the L-shaped rod.

[0013] Preferably, it further includes a liquid pumping component for pumping in a liquid lubricant while compensating for the liquid pressure loss to further reduce the liquid pressure loss. The liquid pumping component includes a liquid pumping frame fixedly connected to the lower end of the guide plate. The piston block is sealingly slidably connected to the inner wall of the liquid pumping frame. A second spring is provided between the piston block and the liquid pumping frame. A liquid storage tank is fixedly connected to the lower end of the filter box. A liquid pumping pipe is connected between the liquid storage tank and the liquid pumping frame. A liquid discharge pipe communicating with the inside of the filter box is connected to the end of the liquid pumping frame away from the liquid pumping pipe. Check valves are provided in both the liquid pumping pipe and the liquid discharge pipe.

[0014] Compared with the prior art, the advantages of this liquid flowmeter filtering device are as follows: By providing an acceleration mechanism, during filtering, the driving of the rotating rod causes the acceleration fan blades to rotate within the acceleration frame. Before the liquid in the filter box flows through the acceleration frame and the connecting pipe to the liquid flowmeter, the liquid is accelerated to compensate for the pressure loss of the liquid when passing through the filtering device, avoid the influence of the pressure loss on the measurement result, and improve the measurement accuracy of the liquid flowmeter.

[0015] By providing an adjustment component, the present invention can adjust the acceleration effect of the acceleration fan blades on the liquid by controlling the flow rate of the liquid passing through the filter box within a unit time. When the liquid flow rate is large, the conical filter cylinder cannot filter out the liquid in time, resulting in a large amount of liquid remaining in the conical filter cylinder. The hydraulic oil in the hydraulic telescopic rod is then conveyed into the adjustment telescopic rod, causing the angle between the abutting inclined rod and the horizontal plane to become smaller. As a result, when the abutting inclined rod moves down by the same distance, the abutting wheel is pushed further, the piston block moves faster, and the rotating speed of the turntable and the rotating rod increases, thereby enhancing the acceleration effect of the acceleration fan blades on the fluid. Conversely, when the fluid flow rate is small, the amount of liquid remaining in the conical filter cylinder is small, and the abutting inclined rod needs to move down a greater distance to move the abutting wheel to the designated position. This causes the piston block to move more slowly, weakening the acceleration effect of the acceleration fan blades on the fluid. By adjusting the acceleration effect on the fluid in real-time according to the change in the liquid flow rate, the acceleration effect is ensured to correspond to the reduction in the liquid flow velocity. More compensation can be provided for the flow velocity when the reduction amplitude is larger, improving the detection result of the liquid flow meter.

[0016] When the present invention provides a liquid pumping component to accelerate the liquid to compensate for the pressure loss of the liquid, the abutting inclined rod will drive the piston block to translate within the liquid pumping frame when abutting and pushing the abutting wheel. When the abutting inclined rod no longer pushes the abutting wheel, the piston block will translate back to its initial position under the elastic force of the second spring. Thus, the piston block reciprocally pumps out the liquid lubricant in the liquid storage tank and pumps it into the filter box, reducing the friction between the liquid and the filter medium, thereby reducing the pressure loss during the liquid filtration process and further improving the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a sectional structural schematic diagram of the filter box in the present invention; Figure 3 is Figure 2 an enlarged view of part A in Figure 4 is a partial structural schematic diagram of the adjustment component in the present invention; Figure 5 is a partial sectional view of the acceleration frame in the present invention; Figure 6 is Figure 5 an enlarged view of part B in

[0018] In the figure: 1. Liquid flowmeter; 11. Filter box; 12. Filter mechanism; 121. Lifting support ring; 122. Ring-shaped storage frame; 123. Conical filter cylinder; 124. Filter holes; 125. Driving assembly; 1251. First motor; 1252. First gear; 1253. Transmission gear ring; 13. Conical deflector; 14. Connecting pipe; 2. Acceleration mechanism; 21. Acceleration frame; 22. Rotating rod; 23. Acceleration fan blades; 3. Adjustment assembly; 31. Guide plate; 32. Lifting block; 33. Lifting component; 331. Screw rod; 332. Second motor; 34. Control board; 35. Abutting inclined rod; 36. Hydraulic component; 361. Second gear; 362. Rack; 363. Adjusting telescopic rod; 364. Supporting arc block; 365. First spring; 366. Hydraulic telescopic rod; 367. Infusion pipe; 37. Turntable; 38. Transmission component; 381. Fixed shaft; 382. Collar; 383. Connecting rod; 384. Piston block; 385. L-shaped rod; 386. Abutting wheel; 4. Liquid pumping assembly; 41. Liquid pumping box; 42. Second spring; 43. Liquid storage tank; 44. Liquid pumping pipe; 45. Drain pipe. Detailed implementation mode

[0019] The following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0020] Embodiment: Refer to Figures 1 to 6 , a filtering device for a liquid flowmeter, comprising: A liquid flowmeter 1, one end of the liquid flowmeter 1 is communicated with a filter box 11, and a filter mechanism 12 for filtering and storing impurities in the liquid is arranged inside the filter box 11; Specifically, the filter mechanism 12 includes a lifting support ring 121 that slides vertically along the inner wall of the filter box 11. A ring-shaped storage frame 122 is rotatably connected to the inner wall of the lifting support ring 121. A conical filter cylinder 123 is fixedly connected to the inner bottom wall of the ring-shaped storage frame 122. A plurality of filter holes 124 are formed in the circumferential side wall of the conical filter cylinder 123. A driving assembly 125 for driving the conical filter cylinder 123 to rotate is arranged at the upper end of the lifting support ring 121. The driving assembly 125 includes a first motor 1251 fixedly connected to the upper end of the lifting support ring 121. A first gear 1252 is fixedly connected to the output shaft of the first motor 1251. A transmission gear ring 1253 is fixedly connected to the upper end of the ring-shaped storage frame 122 through a connecting plate. The first gear 1252 meshes with the transmission gear ring 1253.

[0021] During the filtering process, the first motor 1251 can be used to drive the first gear 1252 to rotate. Subsequently, the transmission gear ring 1253 drives the annular storage frame 122 to rotate relative to the lifting support ring 121, causing the annular storage frame 122 and the conical filter cylinder 123 to rotate. During the rotation of the conical filter cylinder 123, the liquid can be thrown out of the conical filter cylinder 123 through the filter holes 124, filtering the impurities in the liquid inside the conical filter cylinder 123. At the same time, the impurities in the conical filter cylinder 123 will gradually move upward along the inner wall of the conical filter cylinder 123 under the action of centrifugal force and further enter the annular storage frame 122 for storage, preventing excessive accumulation of impurities in the conical filter cylinder 123 and causing blockage of the conical filter cylinder 123.

[0022] Among them, a conical deflector 13 is fixedly connected above the acceleration frame 21. One end of the liquid flowmeter 1 is connected to the inside of the acceleration frame 21 through a connecting pipe 14. The liquid filtered by the conical filter cylinder 123 can be deflected to the acceleration frame 21 through the conical deflector 13 and the liquid is transported to the liquid flowmeter 1 through the connecting pipe 14 for measurement.

[0023] The acceleration mechanism 2 is used to compensate for the pressure loss of the liquid in the filter tank 11 to improve the detection accuracy of the liquid flowmeter 1. The acceleration mechanism 2 includes an acceleration frame 21 fixedly connected to the lower wall of the filter tank 11 and communicating with the inside of the filter tank 11. A rotating rod 22 is rotatably connected through the inner bottom wall of the acceleration frame 21, and an airtight connection is provided between the rotating rod 22 and the bottom wall of the acceleration frame 21. An acceleration fan blade 23 is provided on the rotating rod 22; In view of the problem in the prior art that when the liquid passes through the filtering device, the filtering medium in the filtering device (usually a filter screen or filter material, in this application, the filtering medium is the conical filter cylinder 123) will generate resistance to the fluid flow, resulting in pressure loss. This pressure loss will cause a decrease in the fluid flow rate and a reduction in the flow velocity, thereby affecting the measurement accuracy of the flowmeter. The present invention solves this problem by providing the acceleration mechanism 2. During filtering, by driving the rotation of the rotating rod 22, the acceleration fan blade 23 rotates in the acceleration frame 21. Before the liquid in the filter tank 11 flows to the liquid flowmeter 1 through the acceleration frame 21 and the connecting pipe 14, the liquid is accelerated to compensate for the pressure loss when the liquid passes through the filtering device, avoiding the influence of the pressure loss on the measurement result and improving the measurement accuracy of the liquid flowmeter.

[0024] The adjusting assembly 3 is arranged between the accelerating mechanism 2 and the filtering mechanism 12 and is used to adjust the compensation degree of the liquid pressure loss according to the flow rate of the liquid. The adjusting assembly 3 includes a guide plate 31 fixedly connected to the lower end of the filtering box 11. A lifting block 32 is slidably connected to the side wall of the guide plate 31 in the vertical direction. A lifting member 33 for driving the lifting block 32 is provided at the lower end of the filtering box 11. One end of the lifting block 32 away from the guide plate 31 is fixedly connected with a control plate 34. An abutting inclined rod 35 is rotatably connected to the side wall of the control plate 34. A hydraulic member 36 for adjusting the inclination angle of the abutting inclined rod 35 is provided on the control plate 34. The bottom end of the rotating rod 22 is fixedly connected with a turntable 37. A transmission member 38 for driving the turntable 37 to rotate is provided between the abutting inclined rod 35 and the turntable 37.

[0025] Specifically, the lifting member 33 includes a screw rod 331 rotatably connected to the lower end of the filtering box 11 and in threaded cooperation with the lifting block 32. A second motor 332 for driving the screw rod 331 is provided below the filtering box 11. The second motor 332 can be fixedly connected to the upper wall of the liquid pumping frame 41 to ensure the stability of the second motor 332. By driving the screw rod 331 to rotate through the second motor 332, the lifting block 32 can be driven to move in the vertical direction.

[0026] Specifically, the hydraulic member 36 includes a second gear 361 fixedly connected to the rotating shaft of the abutting inclined rod 35. A rack 362 meshing with the second gear 361 is slidably connected to the side wall of the control plate 34. An adjusting telescopic rod 363 for driving the rack 362 to slide in the vertical direction is fixedly connected to the side wall of the control plate 34. Two supporting arc blocks 364 are fixedly connected to the inner wall of the filtering box 11. A first spring 365 is provided between the two supporting arc blocks 364 and the lifting support ring 121. A hydraulic telescopic rod 366 controlled by the flow rate is provided between one of the supporting arc blocks 364 and the lifting support ring 121. The bottom end of the hydraulic telescopic rod 366 is fixedly connected to the supporting arc block 364, and the top telescopic end is fixedly connected to the lifting support ring 121. A liquid infusion pipe 367 is communicated between the inside of the hydraulic telescopic rod 366 and the inside of the adjusting telescopic rod 363. The inside of the adjusting telescopic rod 363, the inside of the hydraulic telescopic rod 366 and the inside of the liquid infusion pipe 367 are all filled with hydraulic oil. Due to the characteristic that hydraulic oil is difficult to compress, when the liquid flow rate increases and more liquid remains in the conical filter cylinder 123, the lifting support ring 121 can be driven to move downward by gravity, so that the hydraulic oil inside the hydraulic telescopic rod 366 can enter the adjusting telescopic rod 363 through the liquid infusion pipe 367, causing the rack 362 to move upward and adjusting the angle of the abutting inclined rod 35 under the action of the second gear 361.

[0027] Specifically, the transmission component 38 includes a fixed shaft 381 fixedly connected to the bottom end of the turntable 37. A collar 382 is rotatably sleeved on the fixed shaft 381. A connecting rod 383 is fixedly connected to the collar 382. A piston block 384 that moves horizontally is provided below the filter box 11. The connecting rod 383 is hinged to the piston block 384. One end of the piston block 384 away from the connecting rod 383 is fixedly connected with an L-shaped rod 385. The top of the L-shaped rod 385 is rotatably connected with a contact wheel 386 that cooperates with the contact inclined rod 35. Here, a one-way bearing can be arranged between the rotating rod 22 and the bottom wall of the filter box 11, so that the rotating rod 22 and the turntable 37 can only rotate in one direction. Thus, when the piston block 384 makes a reciprocating horizontal displacement, it can only push the turntable 37 to rotate in a single direction through the connecting rod 383, avoiding the back-and-forth rotation of the turntable 37 from affecting the acceleration effect on the liquid.

[0028] In view of the problem in the prior art that when the liquid passes through the filtering device, there are differences in the liquid flow rate. When the liquid flow rate is large, the liquid flow velocity will increase. According to the principle of fluid dynamics, the increase in flow velocity will lead to an increase in the frictional force of the liquid in the filtering medium. Therefore, it will lead to an increase in the pressure loss of the liquid when passing through the filtering device, and further lead to a greater degree of reduction in the liquid flow rate and a greater reduction in the flow velocity, making it more difficult to ensure the measurement accuracy of the flowmeter. The present invention solves this problem by setting the adjustment component 3, which can adjust the acceleration effect of the accelerating fan blades 23 on the liquid according to the flow rate of the liquid passing through the filter box 11 per unit time. The specific acceleration adjustment is as follows: It should be pre-explained that the second motor 332 adopts a servo motor, which can drive the screw rod 331 to rotate forward and backward to ensure that the lifting block 32 and the control board 34 can make reciprocating vertical displacements. Through the extrusion and pushing of the contact inclined rod 35 on the contact wheel 386, the piston block 384 is driven to move reciprocally in the horizontal direction. Switching control blocks (not marked in the figure) are arranged at designated positions on both sides of the inner top wall of the liquid pumping frame 41, so that after the piston block 384 moves to the designated position in the liquid pumping frame 41, the second motor 332 automatically switches its working state, drives the screw rod 331 to flip and the piston block 384 to move in the reverse direction (the reciprocating displacement of the piston block 384 is assisted by the second spring 42 in the liquid pumping component 4), so that the piston block 384 can always make reciprocating movements within the designated range; When the liquid flow rate is large, the conical filter cartridge 123 cannot filter the liquid out in time, resulting in a large amount of liquid remaining in the conical filter cartridge 123. At this time, the lifting support ring 121 drives the conical filter cartridge 123 to move downward a greater distance under the action of gravity, thereby transmitting the hydraulic oil in the hydraulic telescopic rod 366 to the adjusting telescopic rod 363, and driving the second gear 361 to rotate through the sliding of the rack 362, thereby driving the abutting inclined rod 35 to rotate, making the angle between the abutting inclined rod 35 and the horizontal plane smaller, so that when the abutting wheel 386 moves along the abutting inclined rod 35, the abutting inclined rod 35 moves downward by the same distance, pushing the abutting wheel 386 to move farther, so that each time the abutting inclined rod 35 moves downward, the speed of the piston block 384 is faster. Since the piston block 384 can drive the rotary disk 37 to rotate through the connecting rod 383 and the collar 382 when it moves, the rotation speed of the rotary disk 37 and the rotating rod 22 is faster, thereby improving the acceleration effect of the acceleration fan 23 on the fluid; When the fluid flow rate is small, the amount of liquid retained in the conical filter cartridge 123 is small, the lifting support ring 121 drives the conical filter cartridge 123 to move downward a shorter distance, and the angle between the abutting inclined rod 35 and the horizontal plane is larger, so that when the abutting wheel 386 moves along the abutting inclined rod 35, the abutting inclined rod 35 needs to move downward a longer distance to move the abutting wheel 386 to the specified position, thereby causing the piston block 384 to move more slowly, and the rotation speed of the rotary disk 37 and the rotary rod 22 to be slower, thereby reducing the acceleration effect of the acceleration blade 23 on the fluid; In summary, the acceleration effect on the fluid can be adjusted in real time according to the change of liquid flow rate to ensure that the acceleration effect corresponds to the amplitude of the reduction in liquid flow rate. The greater the amplitude of the flow rate reduction, the more the flow rate can be compensated, thereby improving the detection result of the liquid flow meter 1.

[0029] It also includes a liquid pumping component 4, which is used to pump liquid lubricant while compensating for liquid pressure loss to further reduce liquid pressure loss. The liquid pumping component 4 includes a liquid pumping frame 41 fixedly connected to the lower end of the guide plate 31, and a piston block 384 is sealingly and slidingly connected to the inner wall of the liquid pumping frame 41. A second spring 42 is provided between the piston block 384 and the liquid pumping frame 41. The lower end of the filter box 11 is fixedly connected to a liquid storage tank 43, and a liquid pumping pipe 44 is connected between the liquid storage tank 43 and the liquid pumping frame 41. The end of the liquid pumping frame 41 away from the liquid pumping pipe 44 is connected to a drain pipe 45 connected to the inside of the filter box 11, and a one-way valve is provided in both the liquid pumping pipe 44 and the drain pipe 45.

[0030] It is worth mentioning that, through the liquid extraction assembly 4 provided in the present invention, when accelerating the liquid to compensate for the pressure loss of the liquid, the abutting inclined rod 35 will drive the piston block 384 to translate within the liquid extraction frame 41 when abutting and pushing the abutting wheel 386. When the abutting inclined rod 35 no longer pushes the abutting wheel 386, the piston block 384 will translate back to the initial displacement in the reverse direction under the elastic force of the second spring 42. Thus, the piston block 384 reciprocally pumps out the liquid lubricant in the liquid storage tank 43 and pumps it into the filtration tank 11, reducing the frictional force between the liquid and the conical filter cylinder 123, thereby reducing the pressure loss during the filtration process of the liquid and further improving the detection result. At the same time, since the acceleration effect of the acceleration fan blade 23 on the liquid is proportional to the flow rate of the liquid, and the piston block 384 horizontally moves one cycle when the acceleration fan blade 23 rotates one cycle, the suction volume of the piston block 384 for the liquid lubricant is positively correlated with the flow rate of the liquid. The extraction amount of the liquid lubricant can be adjusted according to the amount of fluid flow, ensuring the lubrication effect of the liquid lubricant on the liquid while ensuring that the added amount of the liquid lubricant does not affect the detection result of the liquid.

[0031] The functional principle of the present invention can be elaborated through the following operation modes: During the filtration process, the liquid is transported to the interior of the filtration tank 11. The first motor 1251 drives the first gear 1252 to rotate, and then drives the annular storage frame 122 to rotate relative to the lifting support ring 121 through the transmission gear ring 1253, causing the annular storage frame 122 and the conical filter cylinder 123 to rotate. During the rotation of the conical filter cylinder 123, the liquid can be thrown out of the conical filter cylinder 123 through the filter holes 124, filtering the impurities in the liquid inside the conical filter cylinder 123. At the same time, the impurities in the conical filter cylinder 123 will gradually move upward along the inner wall of the conical filter cylinder 123 under the action of centrifugal force and further enter the annular storage frame 122 for storage; During filtration, by driving the rotation of the driving rod 22, the acceleration fan blade 23 rotates within the acceleration frame 21, and the liquid in the filtration tank 11 is accelerated before flowing through the acceleration frame 21 and the connecting pipe 14 to the liquid flowmeter 1. The second motor 332 drives the screw 331 to rotate forward and reverse, driving the lifting block 32 and the control plate 34 to perform reciprocating vertical displacement, and the abutment wheel 386 is squeezed and pushed by the abutment inclined rod 35, driving the piston block 384 to reciprocate in the horizontal direction. Switching control blocks are provided at designated positions on both sides of the abutment inclined rod 35, so that after the abutment wheel 386 moves to the designated position on the abutment inclined rod 35, the second motor 332 automatically switches the working state. The angle of the abutment inclined rod 35 is adjustable. When the liquid flow rate is large, the amount of liquid retained in the conical filter cartridge 123 is large. At this time, the lifting support 332 is Under the action of gravity, the support ring 121 drives the conical filter cartridge 123 to move downward a greater distance, and the hydraulic oil in the hydraulic telescopic rod 366 is transported to the adjusting telescopic rod 363, driving the abutting inclined rod 35 to rotate, so that the angle between the abutting inclined rod 35 and the horizontal plane is smaller. When the abutting inclined rod 35 moves along the abutting inclined rod 35, the abutting inclined rod 35 moves the abutting wheel 386 farther when the abutting inclined rod 35 moves downward the same distance, thereby making the abutting inclined rod 35 push the piston block 384 to move faster, making the rotation speed of the turntable 37 and the rotating rod 22 faster, and improving the acceleration effect of the acceleration blade 23 on the fluid; When the abutment inclined rod 35 abuts and pushes the abutment wheel 386, it will drive the piston block 384 to translate in the liquid pumping frame 41. When the abutment inclined rod 35 no longer pushes the abutment wheel 386, the piston block 384 will translate in the opposite direction to return to the initial displacement under the elastic force of the second spring 42, thereby pumping out the liquid lubricant in the liquid storage tank 43 through the piston block 384 and pumping it into the filter box 11, reducing the friction between the liquid and the conical filter cylinder 123.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A liquid flowmeter filtering device, characterized in that, Including: A liquid flowmeter (1), one end of the liquid flowmeter (1) is communicated with a filter box (11), and a filtering mechanism (12) for filtering and storing impurities in the liquid is arranged inside the filter box (11); An acceleration mechanism (2) for compensating the pressure loss of the liquid in the filter box (11) to improve the detection accuracy of the liquid flowmeter (1). The acceleration mechanism (2) includes an acceleration frame (21) fixedly connected to the lower wall of the filter box (11) and communicated with the inside of the filter box (11). A rotating rod (22) is rotatably connected through the inner bottom wall of the acceleration frame (21), and the rotating rod (22) is hermetically connected to the bottom wall of the acceleration frame (21). An acceleration fan blade (23) is arranged on the rotating rod (22); An adjustment assembly (3) is arranged between the acceleration mechanism (2) and the filtering mechanism (12) for adjusting the compensation degree of the liquid pressure loss according to the flow rate of the liquid. The adjustment assembly (3) includes a guide plate (31) fixedly connected to the lower end of the filter box (11). A lifting block (32) is slidably connected to the side wall of the guide plate (31) in the vertical direction. A lifting component (33) for driving the lifting block (32) is arranged at the lower end of the filter box (11). One end of the lifting block (32) away from the guide plate (31) is fixedly connected with a control plate (34). An abutting inclined rod (35) is rotatably connected to the side wall of the control plate (34). A hydraulic component (36) for adjusting the inclination angle of the abutting inclined rod (35) is arranged on the control plate (34). A turntable (37) is fixedly connected to the bottom end of the rotating rod (22). A transmission component (38) for driving the turntable (37) to rotate is arranged between the abutting inclined rod (35) and the turntable (37).

2. The liquid flowmeter filtering device according to claim 1, characterized in that, A conical deflector (13) is fixedly connected above the acceleration frame (21), and a connecting pipe (14) is communicated between one end of the liquid flowmeter (1) and the inside of the acceleration frame (21).

3. The liquid flowmeter filtering device according to claim 1, characterized in that, The filtering mechanism (12) includes a lifting support ring (121) slidably arranged in the vertical direction along the inner wall of the filter box (11). An annular storage frame body (122) is rotatably connected to the inner wall of the lifting support ring (121). A conical filter cylinder (123) is fixedly connected to the inner bottom wall of the annular storage frame body (122). A plurality of filter holes (124) are formed in the peripheral side wall of the conical filter cylinder (123). A driving component (125) for driving the conical filter cylinder (123) to rotate is arranged at the upper end of the lifting support ring (121).

4. The liquid flowmeter filtering device according to claim 3, wherein The driving component (125) includes a first motor (1251) fixedly connected to the upper end of the lifting support ring (121). A first gear (1252) is fixedly connected to the output shaft of the first motor (1251). A transmission gear ring (1253) is fixedly connected to the upper end of the annular storage frame body (122) through a connecting plate. The first gear (1252) and the transmission gear ring (1253) are meshed with each other.

5. The liquid flowmeter filtering device according to claim 1, characterized in that, The lifting component (33) includes a screw rod (331) rotatably connected to the lower end of the filter box (11) and threadedly engaged with the lifting block (32). A second motor (332) for driving the screw rod (331) is provided below the filter box (11).

6. The liquid flowmeter filtering device according to claim 1, characterized in that, The hydraulic component (36) includes a second gear (361) fixedly connected to the rotating shaft of the abutting inclined rod (35). A rack (362) engaged with the second gear (361) is slidably connected to the side wall of the control board (34). An adjusting telescopic rod (363) for driving the rack (362) to slide in the vertical direction is fixedly connected to the side wall of the control board (34). Two supporting arc blocks (364) are fixedly connected to the inner wall of the filter box (11). A first spring (365) is provided between the two supporting arc blocks (364) and the lifting support ring (121). A hydraulic telescopic rod (366) controlled by the flow rate is provided between one of the supporting arc blocks (364) and the lifting support ring (121). A liquid infusion pipe (367) is connected between the inside of the hydraulic telescopic rod (366) and the inside of the adjusting telescopic rod (363). The inside of the adjusting telescopic rod (363), the inside of the hydraulic telescopic rod (366), and the inside of the liquid infusion pipe (367) are all filled with hydraulic oil.

7. The liquid flowmeter filtering device according to claim 1, characterized in that, The transmission component (38) includes a fixed shaft (38^) fixedly connected to the bottom end of the turntable (37). A collar (382) is rotatably sleeved on the fixed shaft (381). A connecting rod (383) is fixedly connected to the collar (382). A piston block (384) moving horizontally is provided below the filter box (11). The connecting rod (383) is hinged to the piston block (384). An L-shaped rod (385) is fixedly connected to the end of the piston block (384) away from the connecting rod (383). A abutting wheel (386) cooperating with the abutting inclined rod (35) is rotatably connected to the top of the L-shaped rod (385).

8. The liquid flowmeter filtering device according to claim 7, wherein, It further includes a liquid pumping assembly (4) for pumping in liquid lubricant while compensating for the liquid pressure loss to further reduce the liquid pressure loss. The liquid pumping assembly (4) includes a liquid pumping frame (41) fixedly connected to the lower end of the guiding plate (31). The piston block (384) is sealingly and slidably connected to the inner wall of the liquid pumping frame (41). A second spring (42) is provided between the piston block (384) and the liquid pumping frame (41). A liquid storage tank (43) is fixedly connected to the lower end of the filter box (11). A liquid pumping pipe (44) is connected between the liquid storage tank (43) and the liquid pumping frame (41). A liquid discharge pipe (45) communicating with the inside of the filter box (11) is connected to the end of the liquid pumping frame (41) away from the liquid pumping pipe (44). Check valves are provided in both the liquid pumping pipe (44) and the liquid discharge pipe (45).

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