Tool for machining orifice plate flowmeter

Abstract

The utility model discloses a tool for machining an orifice plate flowmeter, which belongs to the technical field of orifice plate flowmeters and comprises a positioning seat, a positioning sleeve for placing an orifice plate required by the orifice plate flowmeter is arranged on one side of the positioning seat, a fixing block is welded on one side surface of the positioning seat, a fixing sleeve sleeved on the peripheral side of the fixing block is welded on one side surface of the positioning sleeve, and the fixing sleeve is sleeved on the other side surface of the positioning seat. A movable block is arranged in an inner cavity of the fixed block, a penetrating type driving assembly used for moving the movable block is installed on the top face of the fixed block, hinge plates are hinged to the two side faces of the movable block through pin shafts correspondingly, movable blocks are hinged to the free ends of the two hinge plates through pin shafts correspondingly, and a spring is connected between the two movable blocks. Clamping blocks penetrating through the fixed block are welded to the opposite side faces of the two movable blocks, and clamping holes allowing the two clamping blocks to penetrate through are formed in the two side faces of the fixed sleeve. According to the tool for machining the orifice plate flowmeter, the problem that the positioning seat and the positioning sleeve are inconvenient to disassemble is solved, and the machining efficiency of an orifice plate is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to orifice plate flowmeter technical field, especially a kind of tooling for processing orifice plate flowmeter. BACKGROUND

[0002] Orifice plate flowmeter is the high range ratio differential pressure flow device that is matched with standard orifice plate and multivariable differential pressure transmitter, the flow of gas, steam, liquid and natural gas can be measured, now when the orifice plate of orifice plate flowmeter is processed, positioning seat and positioning sleeve will be used to fix orifice plate on three-jaw chuck, and positioning seat and positioning sleeve are detachable between them, and different orifice plates of different aperture can be processed, most of them will be fixed by bolt, but the gap between positioning seat and positioning sleeve is very small, so that the bolt between positioning seat and positioning sleeve is difficult to disassemble, and bolt is rusted after long time use and difficult to disassemble, thereby reducing the efficiency of positioning sleeve disassembly replacement, also reducing the processing efficiency of orifice plate.

[0003] For example, the existing China announcement number is: CN212496523U a kind of tooling for processing orifice plate flowmeter, and it is:“Including positioning disc, the circumferential of the positioning disc is uniformly provided with multiple clamping grooves, the front end of the positioning disc is provided with positioning table, the rear end of the positioning disc is connected with adapter sleeve, the adapter sleeve is connected with fixed rod.”

[0004] It can be known that the cited patent document has the problem that positioning seat and positioning sleeve are difficult to disassemble. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of tooling for processing orifice plate flowmeter to solve the problems raised in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of tooling for processing orifice plate flowmeter, including positioning seat, the side of the positioning seat is equipped with the positioning sleeve for placing the orifice plate required by orifice plate flowmeter, the side surface of the positioning seat is welded with fixed block, the side surface of the positioning sleeve is welded with fixed sleeve, the inner cavity of the fixed block is equipped with movable block, the top surface of the fixed block is installed with the driving assembly for moving movable block, the two side surfaces of the movable block are respectively hinged with hinged plate by pin shaft, the free end of two hinged plates is also hinged with moving block by pin shaft, spring is connected between two moving blocks, the side surface opposite to two moving blocks is welded with clamping block penetrating fixed block, the two side surfaces of the fixed sleeve are provided with clamping hole for two clamping blocks to pass through.

[0007] Preferably, the circumferential of the positioning seat is provided with three clamping grooves for clamping with externally connected three-jaw chuck, and the driving assembly includes pull rope, fixed rod, sleeve and drag block.

[0008] Preferably, one end of the pull rope is connected with the movable block, and the fixed rod is welded on the inner wall of the fixed block.

[0009] Preferably, the sleeve is installed on the top surface of the fixed block and communicates with the fixed block, and the free end of the pull rope passes below the fixed rod and extends to the inner cavity of the sleeve.

[0010] Preferably, the pull block is fixedly connected with the free end of the pull rope, and the pull block is arranged above the sleeve.

[0011] Preferably, the inner side wall of the fixed block is welded with a limiting rod for limiting the positions of the two movable blocks, and the two movable blocks are slidably sleeved on the circumferential side of the limiting rod.

[0012] Preferably, the inner bottom surface of the fixed block is installed with a sliding rail for limiting the position of the movable block, and the movable block is slidably sleeved on the circumferential side of the sliding rail.

[0013] Compared with the prior art, the technical effects and advantages of the utility model are:

[0014] The tool for machining the orifice plate flowmeter can provide power for the movement of the movable block by pulling the pull block, so that the two movable blocks and the clamping block can move in opposite directions, thereby realizing the installation between the fixed block and the fixed sleeve. Compared with the existing device fixed by bolts, the device can be disassembled by pulling the pull block, and the personnel can also conveniently pull the pull block, avoiding the case that the gap between the positioning seat and the positioning sleeve is small and the bolt is difficult to disassemble, thereby saving time and effort.

[0015] The connected spring can provide power for the movement of the two movable blocks and the clamping block in opposite directions, so that the clamping block is in the clamping hole cavity, and the position of the fixed block and the fixed sleeve is fixed. The welded limiting rod can ensure that the movement position of the movable block and the clamping block is in parallel state, avoiding the offset and unable to enter the clamping hole. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0017] Fig. 1 It is a structural schematic view of the utility model;

[0018] Fig. 2 It is a structural schematic view of the fixed block and the fixed sleeve of the utility model;

[0019] Fig. 3 It is the sectional view of the fixed block of the utility model;

[0020] Fig. 4 It is the side sectional view of the fixed block and sleeve of the utility model.

[0021] Mark explanation:

[0022] In the drawing: 1, positioning seat; 2, clamping groove; 3, positioning sleeve; 4, fixed block; 5, fixed sleeve; 6, movable block; 7, hinged plate; 8, moving block; 9, spring; 10, clamping block; 11, clamping hole; 12, pull rope; 13, fixed rod; 14, sleeve; 15, pulling block; 16, limiting rod; 17, slide rail; 18, limiting block; 19, exhaust pipe. Specific implementation

[0023] In the following description, a large number of specific details are given in order to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0024] Unless the direction indicated by the single definition, the directions such as up, down, left, right, front, back, inside and outside involved in this paper are based on the directions such as up, down, left, right, front, back, inside and outside in the drawing shown by the utility model, which is explained here.

[0025] The connection mode can adopt existing modes such as bonding, welding, bolt connection and the like, and the actual needs are accurate.

[0026] As Figs. 1 to 4 A tool for machining orifice plate flowmeter, including positioning seat 1, positioning seat 1's circumferential side is equipped with three clamping grooves 2 that are clamped with external three-jaw chuck, so that the position of positioning seat 1 is fixed.

[0027] One side of positioning seat 1 is provided with positioning sleeve 3 for placing the required orifice plate of orifice plate flowmeter, and the circumferential side of positioning sleeve 3 is communicated with exhaust pipe 19, and exhaust pipe 19 is connected with external suction pump (not drawn), after the orifice plate is placed in the inner cavity of the matched positioning sleeve 3, the external suction pump is started, the air in the inner cavity of positioning sleeve 3 can be extracted through exhaust pipe 19, so that the inner cavity of positioning sleeve 3 can present the condition of negative pressure, and then the orifice plate is fixed in the inner cavity of positioning sleeve 3.

[0028] One side of the positioning seat 1 is welded with a fixing block 4, one side of the positioning sleeve 3 is welded with a fixing sleeve 5 sleeved on the peripheral side of the fixing block 4, and the side surface and the inner cavity of the fixing sleeve 5 are both hollow, so that the fixing block 4 can move into the inner cavity of the fixing sleeve 5.

[0029] The inner cavity of the fixing block 4 is provided with a movable block 6, the two side surfaces of the movable block 6 are respectively hinged with a hinged plate 7 through a pin shaft, the free ends of the two hinged plates 7 are also respectively hinged with a moving block 8 through a pin shaft, the two moving blocks 8 are connected with a spring 9, the opposite side surfaces of the two moving blocks 8 are welded with a clamping block 10 penetrating the fixing block 4, and the two side surfaces of the fixing block 4 are provided with through holes for the clamping block 10 to pass through, the two side surfaces of the fixing sleeve 5 are provided with clamping holes 11 for the two clamping blocks 10 to pass through, and in the initial state, the fixing sleeve 5 is sleeved on the peripheral side of the fixing block 4. When it is necessary to replace the positioning sleeve 3 of different sizes according to the hole diameter of the hole plate, the movable block 6 is moved to drive the two hinged plates 7 to move, because the initial state of the two hinged plates 7 is inclined, the two hinged plates 7 will drive the moving blocks 8 to move transversely in opposite directions when moving, thereby extruding the spring 9, so that the spring 9 deforms after being subjected to pressure, buffers the pressure, achieves the effect of damping, and drives the clamping blocks 10 to pass through the clamping holes 11 and enter the inner cavity of the fixing block 4, so that the fixing between the fixing block 4 and the fixing sleeve 5 is cancelled, the fixing between the positioning seat 1 and the positioning sleeve 3 is cancelled, and the positioning sleeve 3 is replaced.

[0030] The top surface of the fixed block 4 is provided with a through type driving assembly for moving the movable block 6, which comprises a pull rope 12, a fixed rod 13, a sleeve 14 and a pulling block 15. One end of the pull rope 12 is connected with the movable block 6, the fixed rod 13 is welded on the inner wall of the two sides of the fixed block 4, the sleeve 14 is installed on the top surface of the fixed block 4 and communicates with the same, the free end of the pull rope 12 passes below the fixed rod 13 and extends to the inner cavity of the sleeve 14, the pulling block 15 is fixedly connected with the free end of the pull rope 12, and the pulling block 15 is arranged above the sleeve 14. When it is needed to move the movable block 6, a person pulls the pulling block 15, the pulling block 15 can drive the pull rope 12 to move, and the pull rope 12 can drive the movable block 6 to move through the fixed rod 13, so as to drive the two movable blocks 8 and the clamping block 10 to move in opposite directions in cooperation with the hinged plate 7, extrude the spring 9, so that the clamping block 10 is taken out of the clamping hole 11, and is disassembled. When installing, the fixed sleeve 5 is sleeved on the periphery of the fixed block 4, and then the pulling block 15 is loosened, so that the movable block 8 and the clamping block 10 are returned to the original position through the rebound of the spring 9, so that the clamping block 10 can pass through the fixed block 4 and the clamping hole 11, and the positions of the fixed block 4 and the fixed sleeve 5 can be fixed. Therefore, the worker only needs to pull the pulling block 15, so as to realize the disassembly and installation of the positioning seat 1 and the positioning sleeve 3, avoid the small gap between the positioning seat 1 and the positioning sleeve 3, and avoid the rusting of the bolt, improve the machining efficiency of the hole plate.

[0031] The top surface of the fixed block 4 is welded with a baffle. When the fixed sleeve 5 is sleeved on the periphery of the fixed block 4 and abuts against the baffle, the clamping holes 11 on the two side surfaces of the fixed sleeve 5 are aligned with the positions of the two clamping blocks 10, so that the clamping block 10 can enter the clamping hole 11.

[0032] The inner side wall of the fixed block 4 is welded with a limiting rod 16 for limiting the positions of the two movable blocks 8. The two movable blocks 8 are respectively sleeved on the periphery of the limiting rod 16, so as to avoid the deviation of the positions of the movable blocks 8 and the clamping blocks 10 during movement.

[0033] The inner bottom surface of the fixed block 4 is provided with a sliding rail 17 for limiting the position of the movable block 6. The movable block 6 is sleeved on the periphery of the sliding rail 17, so as to ensure that the movable block 6 can only reciprocate in one direction.

[0034] The inner bottom surface of the fixed block 4 is symmetrically welded with a limiting block 18, the movable block 6 and the two hinged plates 7 are between the two limiting blocks 18, when the two hinged plates 7 are moved by the movable block 6, the two hinged plates 7 will be respectively against the two limiting blocks 18, since the two hinged plates 7 are in an inclined state, so when the two hinged plates 7 continue to be moved by the movable block 6, the two hinged plates 7 will move along the inclined surface of the two limiting blocks 18 and gradually move between the two limiting blocks 18, so that the two hinged plates 7 can move in opposite directions with the end hinged with the two moving blocks 8, thereby driving the two moving blocks 8 and the clamping block 10 to move in opposite directions, that is, it can assist the movement of the two hinged plates 7, the moving block 8 and the clamping block 10.

[0035] Working principle:

[0036] The tool for machining orifice plate flowmeter, through the clamping groove 2, the positioning seat 1 is fixed with the external three-jaw chuck, the orifice plate of the orifice plate flowmeter is placed in the inner cavity of the positioning sleeve 3, and the air in the inner cavity of the positioning sleeve 3 is extracted by the external air pump through the exhaust pipe 19, so that the inner cavity of the positioning sleeve 3 presents a negative pressure condition, and then the orifice plate is fixed in the inner cavity of the positioning sleeve 3 for machining. When the orifice plate of other aperture needs to be machined, the staff pulls the pull block 15 upwards, thereby pulling the pull rope 12, so that the pull rope 12 pulls the movable block 6 to move, so that the movable block 6 drives the two hinged plates 7 to move. Since the two hinged plates 7 are in an inclined state, the two hinged plates 7 will move in opposite directions with the moving block 8 and the clamping block 10, and the spring 9 will be extruded, so that the clamping block 10 is taken out from the inner cavity of the clamping hole 11, that is, the fixing between the fixed block 4 and the fixed sleeve 5 is cancelled, so that the positioning sleeve 3 can be disassembled, and the positioning sleeve 3 suitable for the aperture of the orifice plate to be machined is replaced. The staff only needs to pull the pull block 15 to realize disassembly, avoid the gap between the positioning seat 1 and the positioning sleeve 3 being small and difficult to disassemble the bolt, and the bolt being rusty and difficult to disassemble, and improve the machining efficiency of the orifice plate.

[0037] It should be noted that in this text, relational terms such as one and two 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 the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the statement "includes a limited element" does not exclude the existence of other identical elements in the process, method, article or equipment including the element.

[0038] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A tooling for machining an orifice plate flow meter comprising a positioning seat (1), characterized in that: One side of the positioning seat (1) is provided with a positioning sleeve (3) for placing the orifice plate required by the orifice flowmeter, one side of the positioning seat (1) is welded with a fixed block (4), one side of the positioning sleeve (3) is welded with a fixed sleeve (5) sleeved on the peripheral side of the fixed block (4), the inner cavity of the fixed block (4) is provided with a movable block (6), the top surface of the fixed block (4) is installed with a through type driving assembly for moving the movable block (6), the two side surfaces of the movable block (6) are respectively hinged with a hinged plate (7) through a pin shaft, the free ends of the two hinged plates (7) are also hinged with a moving block (8) through a pin shaft respectively, the two moving blocks (8) are connected with a spring (9), the opposite side surfaces of the two moving blocks (8) are welded with a clamping block (10) penetrating through the fixed block (4), the two side surfaces of the fixed sleeve (5) are provided with clamping holes (11) for the two clamping blocks (10) to pass through.

2. A tool for machining an orifice plate flow meter according to claim 1, characterized in that: The peripheral side of the positioning seat (1) is provided with three clamping grooves (2) clamped with an externally connected three-jaw chuck, the driving assembly comprises a pull rope (12), a fixed rod (13), a sleeve (14) and a pulling block (15).

3. A tool for machining an orifice plate flow meter according to claim 2, wherein: One end of the pull rope (12) is connected with the movable block (6), and the fixed rod (13) is welded on the inner wall of the two sides of the fixed block (4).

4. A tool for machining an orifice plate flow meter according to claim 3, wherein: The sleeve (14) is installed on the top surface of the fixed block (4) and communicates with it, the free end of the pull rope (12) passes below the fixed rod (13) and extends to the inner cavity of the sleeve (14).

5. A tool for machining an orifice plate flow meter according to claim 4, wherein: The pulling block (15) is fixedly connected with the free end of the pull rope (12), and the pulling block (15) is arranged above the sleeve (14).

6. A tool for machining an orifice plate flow meter according to claim 1, wherein: The inner side wall of the fixed block (4) is welded with a limiting rod (16) for limiting the position of the two moving blocks (8), and the two moving blocks (8) are respectively sleeved on the peripheral side of the limiting rod (16).

7. A tool for machining an orifice plate flow meter according to claim 1, wherein: The inner bottom surface of the fixed block (4) is installed with a sliding rail (17) for limiting the position of the movable block (6), and the movable block (6) is sleeved on the peripheral side of the sliding rail (17).

Images