Adjustable orifice plate flowmeter

Abstract

The utility model discloses an adjustable orifice plate flowmeter, which relates to the technical field of orifice plate flowmeters, and comprises a main channel, the outer surface of the main channel is provided with a flowmeter body, the inside of the main channel is rotatably connected with an orifice plate sheet, the top of the orifice plate sheet is fixedly connected with a clamping block, and the top of the inside of the main channel is provided with a clamping groove. A clamping groove is formed in the outer surface of the main channel, a clamping block is arranged in the clamping groove, the clamping block is rotationally connected with the clamping groove, a rotating rod is fixedly connected to the bottom of the hole plate piece, a supporting plate is fixedly connected to the bottom of the rotating rod, and a containing groove is formed in the bottom of the outer surface of the main channel. The fixing block is pulled downwards, so that the limiting rod at the top of the fixing block is separated from the limiting groove in the supporting plate, then the supporting plate is rotated, the supporting plate drives the rotating rod and the pore plate sheet to rotate, and therefore the pore diameter in the main channel is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of orifice plate flowmeters, in particular to an adjustable orifice plate flowmeter. Background Art

[0002] An orifice flowmeter, also known as a differential pressure flowmeter, measures flow based on the pressure differential generated when a fluid passes through an orifice plate. It consists of a throttling device (orifice plate), a pressure sensor, a measuring tube, a corresponding differential pressure transmitter, and a flow indicator. In cement manufacturing, orifice flowmeters calculate and display flow by measuring the pressure differential as a fluid (such as gas or liquid at the inlet and outlet of a cement mill) passes through the orifice plate.

[0003] An orifice flowmeter, such as that disclosed in Chinese Patent Publication No. CN202321929946.7, comprises a segmented orifice plate. The segmented orifice plate comprises an orifice plate body and a segmented hole formed therein. A first measuring tube is disposed on one side of the segmented orifice plate, a first pressure-taking tube being disposed on the first measuring tube; a second measuring tube is disposed on the other side of the segmented orifice plate, a second pressure-taking tube being disposed on the second measuring tube; and first connecting flanges are disposed on the second measuring tubes and on the second measuring tubes. Each first connecting flange is provided with a locating ring. The segmented orifice plate has a locating groove that mates with the locating ring, and a packing seal is disposed within the locating groove. The distance between the top surface of the inlet end of the segmented hole and the bottom end of the inner cavity of the segmented hole gradually decreases along the direction from the inlet end of the segmented hole to the outlet end of the segmented hole. This device is suitable for use in sewage containing a large amount of particulate matter and improves the service life of the throttling element. While this utility model is easy to adjust and use and has broad market prospects, it still has some drawbacks.

[0004] The orifice flowmeter has a fixed aperture and lacks an adjustable aperture mechanism. The flow rate of the fluid may need to be adjusted according to changes in production requirements or process conditions. The device cannot directly change the flow rate by adjusting the aperture, which limits its application in situations where flexible flow adjustment is required. Since the aperture cannot be adjusted, when particulate matter or other impurities in the fluid accumulate at the orifice plate, it may cause the orifice plate to become clogged or wear increased.

[0005] Therefore, we propose an adjustable orifice flowmeter to solve the above problems. Utility Model Content

[0006] The purpose of the present utility model is to provide an adjustable orifice flowmeter to solve the problem that the aperture of the existing orifice flowmeter proposed in the above background technology is fixed and lacks an aperture adjustable mechanism. The flow rate of the fluid may need to be adjusted according to changes in production requirements or process conditions. The device cannot directly change the flow rate by adjusting the aperture, which limits its application in situations where flexible flow adjustment is required. Since the aperture cannot be adjusted, when particulate matter or other impurities in the fluid accumulate at the orifice plate, it may cause the orifice plate to be clogged or aggravated by wear.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable orifice flowmeter, comprising a main channel, a flowmeter body being installed on the outer surface of the main channel, and an orifice plate being rotatably connected inside the main channel, a clamping block being fixedly connected to the top of the orifice plate, and a clamping slot being provided at the top inside the main channel, the clamping block being rotatably connected to the clamping slot, and a rotating rod being fixedly connected to the bottom of the orifice plate, and a supporting plate being fixedly connected to the bottom of the rotating rod, a placement slot being provided at the bottom of the outer surface of the main channel, and a torsion spring being provided inside the placement slot, the bottom end of the torsion spring being fixedly connected to a fixed block, and the top of the fixed block being fixedly connected to a limiting rod, a limiting slot being provided inside the supporting plate, and the limiting rod being slidably connected to the limiting slot.

[0008] Preferably, first connecting plates are provided on both sides of the main channel, a first pipe is provided on one side of the left first connecting plate, and a second pipe is provided on one side of the right first connecting plate.

[0009] Preferably, a second connecting plate is provided on one side of each of the first pipe and the second pipe, and the first connecting plate is fittedly connected to the second connecting plate.

[0010] Preferably, the outer sleeves of the first connecting plate and the second connecting plate are provided with connecting sleeves, the inner threads of the connecting sleeves are connected to threaded rods, and the bottoms of the threaded rods are connected to clamping blocks via bearings.

[0011] By adopting the above technical solution, the clamping block can be driven to move up and down when the threaded rod rotates.

[0012] Preferably, a positioning block is fixedly connected to the bottom of the clamping block, and positioning grooves are provided at upper and lower ends of the first connecting plate and the second connecting plate, and the positioning block is slidably connected to the positioning grooves.

[0013] By adopting the above technical solution, when the clamping block moves downward, the positioning block at one end can be slidably connected to the positioning groove to achieve a locking effect. When the clamping block moves upward, the positioning block is separated from the positioning groove, and the first pipe, the second pipe and the main channel can be separated, thereby achieving the purpose of easy disassembly.

[0014] Preferably, a guide rod is fixedly connected to the top of the clamping block, and the guide rod is slidably connected to the connecting sleeve, and the guide rod is symmetrically arranged about the central axis of the clamping block.

[0015] By adopting the above technical solution, when the clamping block moves, the guide rod can be driven to move up and down along the connecting sleeve, thereby ensuring that the clamping block can move stably.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the adjustable orifice flowmeter;

[0017] 1. Through the flow meter body, orifice plate, rotating rod, support plate, placement slot, torsion spring, fixed block, limit rod and limit slot, pull the fixed block downward to separate the limit rod on the top of the fixed block from the limit slot on the support plate. Then rotate the support plate to drive the rotating rod and the orifice plate to rotate, thereby adjusting the aperture size inside the main channel.

[0018] 2. By setting the first connecting plate, the second connecting plate, the connecting sleeve, the threaded rod, the clamping block, the positioning block and the positioning groove, the second connecting plate at the first pipe and the second connecting plate at the second pipe are both fitted and connected with the first connecting plate, and the connecting sleeve is arranged on the outside of the first connecting plate and the second connecting plate. When the threaded rod is rotated, the threaded rod drives the clamping block to move. When the positioning block at the bottom of the clamping block is slidably connected with the positioning groove, the first pipe, the second pipe and the main channel can be fastened and connected respectively, thereby achieving the purpose of facilitating and quickly installing and disassembling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front view cutaway structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 A in the middle is an enlarged structural diagram;

[0021] Figure 3 This is a side view schematic diagram of the cutaway structure of the utility model;

[0022] Figure 4 This is a side view of the structure of the utility model;

[0023] Figure 5 It is a schematic diagram of the partially cutaway structure of the utility model.

[0024] In the figure: 1. Main channel; 2. Flowmeter body; 3. Orifice plate; 4. Clamping block; 5. Clamping slot; 6. Rotating rod; 7. Support plate; 8. Placement slot; 9. Torsion spring; 10. Fixing block; 11. Limiting rod; 12. Limiting slot; 13. First connecting plate; 14. First pipe; 15. Second pipe; 16. Second connecting plate; 17. Connecting sleeve; 18. Threaded rod; 19. Clamping block; 20. Positioning block; 21. Positioning slot; 22. Guide rod. DETAILED DESCRIPTION

[0025] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-5 The utility model provides a technical solution: an adjustable orifice flowmeter, comprising a main channel 1, a flowmeter body 2 being mounted on the outer surface of the main channel 1, and an orifice plate 3 being rotatably connected to the interior of the main channel 1, a clamping block 4 being fixedly connected to the top of the orifice plate 3, and a clamping slot 5 being provided at the top of the interior of the main channel 1, the clamping block 4 being rotatably connected to the clamping slot 5, and a rotating rod 6 being fixedly connected to the bottom of the orifice plate 3, and a supporting plate 7 being fixedly connected to the bottom of the rotating rod 6, a placement groove 8 being provided at the bottom of the outer surface of the main channel 1, and a torsion spring 9 being provided inside the placement groove 8, a fixing block 10 being fixedly connected to the bottom end of the torsion spring 9, and a limiting rod 11 being fixedly connected to the top of the fixing block 10, A limiting slot 12 is provided inside the support plate 7, and the limiting rod 11 is slidably connected to the limiting slot 12. Pull the fixed block 10 downward to separate the limiting rod 11 on the top of the fixing block 10 from the limiting slot 12 on the support plate 7. Then rotate the support plate 7 so that the support plate 7 drives the rotating rod 6 and the orifice plate 3 to rotate. The clamping block 4 fixed on the top of the orifice plate 3 is rotatably connected to the clamping slot 5 on the top of the main channel 1, ensuring that the orifice plate 3 can rotate smoothly, thereby adjusting the aperture size inside the main channel 1. After loosening the fixing block 10, the torsion spring 9 will automatically drive the fixing block 10 and the limiting rod 11 to reset, and engage with the limiting slot 12 on the support plate 7, thereby fixing the orifice plate 3.

[0027] A first connecting plate 13 is provided on both sides of the main channel 1, and a first pipe 14 is provided on one side of the left first connecting plate 13, and a second pipe 15 is provided on one side of the right first connecting plate 13. A second connecting plate 16 is provided on one side of the first pipe 14 and the second pipe 15, and the first connecting plate 13 is fitted with the second connecting plate 16. The outer sleeves of the first connecting plate 13 and the second connecting plate 16 are provided with connecting sleeves 17, and the internal threads of the connecting sleeves 17 are connected to the threaded rod 18, and the bottom of the threaded rod 18 is connected to the clamping block 19 through a bearing, and the bottom of the clamping block 19 is fixedly connected to the positioning block 20, and the upper and lower ends of the first connecting plate 13 and the second connecting plate 16 are provided with positioning grooves 21, and the positioning block 20 It is slidably connected to the positioning groove 21, and the top of the clamping block 19 is fixedly connected with a guide rod 22, and the guide rod 22 is slidably connected to the connecting sleeve 17, and the guide rod 22 is symmetrically arranged about the central axis of the clamping block 19. The second connecting plate 16 at the first pipe 14 and the second connecting plate 16 at the second pipe 15 are both fitted and connected with the first connecting plate 13, and the connecting sleeve 17 is sleeved on the outside of the first connecting plate 13 and the second connecting plate 16. When the threaded rod 18 is rotated, the threaded rod 18 drives the clamping block 19 to move. When the positioning block 20 at the bottom of the clamping block 19 is slidably connected to the positioning groove 21, the first pipe 14, the second pipe 15 and the main channel 1 can be fastened and connected respectively, thereby achieving the purpose of facilitating quick installation and disassembly.

[0028] Working principle: When using the adjustable orifice flowmeter, first, the second connecting plate 16 at the first pipe 14 and the second connecting plate 16 at the second pipe 15 are both fitted and connected with the first connecting plate 13, and the connecting sleeve 17 is sleeved on the outside of the first connecting plate 13 and the second connecting plate 16. When the threaded rod 18 is rotated, the threaded rod 18 drives the clamping block 19 to move. When the positioning block 20 at the bottom of the clamping block 19 is slidably connected with the positioning groove 21, the first pipe 14 and the second pipe 15 can be fastened to the main channel 1 respectively. When the aperture size needs to be adjusted, the fixing block 10 can be pulled downward to separate the limiting rod 11 at the top of the fixing block 10 from the limiting groove 12 at the support plate 7, and then the support plate 7 is rotated to drive the rotating rod 6 and the orifice plate 3 to rotate, thereby adjusting the aperture size inside the main channel 1.

[0029] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, 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. An adjustable orifice flowmeter, comprising a main channel (1), characterized in that: The outer surface of the main channel (1) is mounted with a flow meter body (2), and the interior of the main channel (1) is rotatably connected to an orifice plate (3), the top of the orifice plate (3) is fixedly connected to a clamping block (4), and a clamping slot (5) is provided at the top of the interior of the main channel (1), the clamping block (4) is rotatably connected to the clamping slot (5), and the bottom of the orifice plate (3) is fixedly connected to a rotating rod (6), and the bottom of the rotating rod (6) is fixedly connected to a support plate (7); A placement groove (8) is provided at the bottom of the outer surface of the main channel (1), and a torsion spring (9) is provided inside the placement groove (8); the bottom end of the torsion spring (9) is fixedly connected to a fixing block (10), and the top of the fixing block (10) is fixedly connected to a limiting rod (11); a limiting groove (12) is provided inside the support plate (7), and the limiting rod (11) is slidably connected to the limiting groove (12).

2. The adjustable orifice flowmeter according to claim 1, characterized in that: Both sides of the main channel (1) are provided with first connecting plates (13), one side of the left first connecting plate (13) is provided with a first pipe (14), and one side of the right first connecting plate (13) is provided with a second pipe (15).

3. The adjustable orifice flowmeter according to claim 2, characterized in that: A second connecting plate (16) is provided on one side of each of the first pipe (14) and the second pipe (15), and the first connecting plate (13) and the second connecting plate (16) are closely connected.

4. The adjustable orifice flowmeter according to claim 2, characterized in that: The first connecting plate (13) and the second connecting plate (16) are externally sleeved with a connecting sleeve (17), the internal thread of the connecting sleeve (17) is connected to a threaded rod (18), and the bottom of the threaded rod (18) is connected to a clamping block (19) via a bearing.

5. The adjustable orifice flowmeter according to claim 4, characterized in that: The bottom of the clamping block (19) is fixedly connected to a positioning block (20), and the upper and lower ends of the first connecting plate (13) and the second connecting plate (16) are both provided with positioning grooves (21), and the positioning block (20) is slidably connected to the positioning grooves (21).

6. The adjustable orifice flowmeter according to claim 4, characterized in that: A guide rod (22) is fixedly connected to the top of the clamping block (19), and the guide rod (22) is slidably connected to the connecting sleeve (17), and the guide rod (22) is symmetrically arranged about the central axis of the clamping block (19).

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