Nozzle baffle for intelligent positioner and working method of nozzle baffle

Abstract

The nozzle baffle comprises a base, two magnetic conductive plates are symmetrically arranged in the base, the magnetic conductive plates are connected with an electromagnetic coil through magnetic conductive columns, a magnetic conductive sheet is arranged in the middle of a gap between the two magnetic conductive plates, a gap is formed between the magnetic conductive sheet and a permanent magnet on the base, and one side of the magnetic conductive sheet is sequentially connected with a spring piece and a baffle. The spring piece is detachably connected with the base 1, the two sides of the baffle are connected with the groove wall in the base in an abutting mode through springs, the baffle is perpendicular to the nozzle in threaded connection with the interior of the base, and a gap is formed between the air outlet end of the nozzle and the baffle. The working method of the nozzle baffle for the intelligent locator comprises a fault exhaust type and a fault inflation type. The baffle is connected between the two magnetic conductive plates through the magnetic conductive sheets, a baffle balance structure is formed through spring positioning, the stability and linearity are greatly improved, and the air injection amount of the nozzle is stably adjusted. The device is small in size, simple to process and easy to manufacture.

Description

Technical Field

[0001] The invention belongs to the technical field of intelligent valve positioners, and in particular relates to a nozzle baffle for an intelligent positioner. Background Art

[0002] Intelligent positioners are the main accessories of pneumatic regulating valves, and nozzle-flapper positioners have a place in industrial automation. This type of positioner is equipped with a nozzle, a flapper, and an electromagnetic coil. By giving different current values ​​to the coil, the distance between the nozzle and the flapper is changed to control the pressure in front of the nozzle, thereby realizing analog control of the amplifier component in the positioner, and finally realizing continuous position adjustment of various pneumatic actuators.

[0003] The existing patent CN218719176U discloses a nozzle baffle for an intelligent valve positioner, which includes a first soft magnetic material, a second soft magnetic material is fixedly connected to one side of the first soft magnetic material, a nozzle bracket is fixedly connected to the top of the first soft magnetic material, a nozzle head is screwed inside the nozzle bracket, the nozzle head and the second soft magnetic material are connected through a baffle assembly, and an air intake pipeline connected to the inside of the nozzle bracket is also fixedly connected to one side of the nozzle bracket. The amount of gas ejected from the nozzle can be more easily controlled, and vibration is significantly reduced. However, the device is difficult to process, difficult to assemble and debug, and has poor consistency in mass production. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a nozzle baffle for an intelligent positioner, which can stably adjust the jet volume and pressure of the nozzle, has a small size, is simple to process and is easy to assemble.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A nozzle baffle for an intelligent positioner comprises a base, two magnetic conductive plates symmetrically arranged in the base, the magnetic conductive plates are connected to an electromagnetic coil through a magnetic conductive column, a magnetic conductive sheet is arranged in the middle of the interval between the two magnetic conductive plates, a gap is arranged between the magnetic conductive sheet and a permanent magnet on the base, a spring sheet and a baffle are connected to one side of the magnetic conductive sheet in sequence, the spring sheet is detachably connected to the base 1, two sides of the baffle are respectively connected to the top of a groove wall in the base through a spring, the baffle and a nozzle screwed in the base are vertically arranged, and a spacing is arranged between an air outlet end of the nozzle and the baffle.

[0007] The magnetic conductive sheets are symmetrically arranged, are made of soft magnetic material, and are provided with bending parts.

[0008] The magnetic conductive sheet is vertically arranged to the magnetic conductive plate, and the distance between the magnetic conductive sheet and the two magnetic conductive plates is consistent.

[0009] The magnetic conductive sheet, the spring sheet and the baffle are connected by screws.

[0010] The spring sheet is detachably connected to the base via connecting bolts.

[0011] An air inlet hole is arranged on the circumference of the nozzle and is communicated with the air path of the air inlet joint connected to the base.

[0012] The two ends of the spring are positioned respectively by a positioning pin and a positioning screw.

[0013] A working method of a nozzle baffle for an intelligent positioner, including a fault exhaust type and a fault inflation type;

[0014] Fault exhaust type: The distance between the nozzle and the baffle is adjusted to an initial long distance when leaving the factory. At this time, most of the gas in the nozzle is discharged through the nozzle. At this time, the pressure in the nozzle is the lowest. When the electromagnetic coil is energized and the current increases, the magnetic field generated by the electromagnetic coil destroys the original balance, causing the baffle to approach the nozzle. The greater the current, the closer the baffle is to the nozzle, the less gas is discharged from the nozzle, and the pressure in the nozzle increases. At this time, the current is fixed, and a fixed high pressure is output inside the nozzle.

[0015] Fault inflation type: The distance between the nozzle and the baffle is adjusted to an initial close distance when leaving the factory. At this time, a very small part of the gas in the nozzle is discharged through the nozzle. At this time, the pressure in the nozzle is the largest. When the electromagnetic coil is energized and the current increases, the magnetic field generated by the electromagnetic coil destroys the original balance, causing the baffle to move away from the nozzle. The greater the current, the farther the baffle is from the nozzle, the more gas is discharged from the nozzle, and the pressure in the nozzle decreases. At this time, the current is fixed, and a fixed small pressure is output inside the nozzle.

[0016] The initial long distance is 0.3-0.4 mm between the nozzle and the baffle, and the initial short distance is 0-0.1 mm between the nozzle and the baffle.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The baffle of the present invention is connected by a magnetic conductive sheet and arranged between two magnetic conductive plates. The baffle balance structure is formed by spring positioning, and the stability and linearity are greatly improved, and the jet volume of the nozzle is smoothly adjusted. The present invention has a small volume, simple processing, and is easy to manufacture. It can be set to a fault exhaust type or a fault inflation type according to user needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereogram of the present invention.

[0020] Figure 2 It is a front view of the present invention.

[0021] Figure 3 It is a top view of the present invention.

[0022] Figure 4 for Figure 3 AA section view.

[0023] Figure 5 It is a rear view of the present invention. DETAILED DESCRIPTION

[0024] In the description of the present invention, it is to be understood that the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of the present invention, unless otherwise specified, "plurality" means more than two.

[0025] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0026] like Figure 1-Figure 5 A nozzle baffle for an intelligent positioner comprises a base 1, two magnetic conductive plates 2 are symmetrically arranged in the base 1, the magnetic conductive plates 2 are connected to the electromagnetic coil 4 through a magnetic conductive column 3, a magnetic conductive sheet 5 is arranged in the middle of the interval between the two magnetic conductive plates 2, a gap is arranged between the magnetic conductive sheet 5 and the permanent magnet 6 on the base 1, one side of the magnetic conductive sheet 5 is connected to a spring sheet 7 and a baffle 8 in sequence, the spring sheet 7 is detachably connected to the base 1, both sides of the baffle 8 are connected to the top of the groove wall in the base through springs 9, the baffle 8 is vertically arranged to a nozzle 10 screwed in the base 1, and a distance is arranged between the air outlet end of the nozzle 10 and the baffle 8.

[0027] The magnetic conductive sheet 5 is symmetrically arranged. The magnetic conductive sheet 5 is made of soft magnetic material. A bending portion 13 is provided on the magnetic conductive sheet 5 .

[0028] The magnetic conductive sheet 5 is vertically arranged to the magnetic conductive plates 2 , and the distance between the magnetic conductive sheet 7 and the two magnetic conductive plates 2 is consistent.

[0029] The magnetic conductive sheet 5, the spring sheet 7 and the baffle 8 are connected by screws.

[0030] The spring sheet 7 is detachably connected to the base 1 via a connecting bolt 11 .

[0031] The nozzle 10 is provided with an air inlet hole 16 on its circumference, which is in communication with the air path of the air inlet connector 12 connected to the base 1 .

[0032] The two ends of the spring 9 are positioned by a positioning pin 15 and a positioning screw 14 respectively.

[0033] Working process:

[0034] The magnetic column and the magnetic plate are magnetized into the same magnetic pole by the permanent magnet. At this time, the magnetic force of each component is all generated by the magnetic field effect of the permanent magnet. When the electromagnetic coil is energized, the electromagnetic coil will generate two magnetic poles, S and N. These two magnetic poles will break the original magnetic field structure, the magnetic field strength of the same magnetic poles will increase, and the magnetic field strength of different magnetic poles will decrease, which will eventually lead to one force of the magnetic plate attracting the magnetic sheet to increase and the other to decrease, causing the magnetic sheet to shift, and finally causing the distance between the baffle and the nozzle to shift. When different currents are passed through the electromagnetic coil, the magnetic field will change accordingly, thereby changing the distance between the nozzle and the baffle to change the nozzle's jet volume.

[0035] A working method of a nozzle baffle for an intelligent positioner, including a fault exhaust type and a fault inflation type;

[0036] Fault exhaust type: The distance between the nozzle and the baffle is adjusted to an initial long distance when leaving the factory. At this time, most of the gas in the nozzle is discharged through the nozzle. At this time, the pressure in the nozzle is the lowest. When the electromagnetic coil is energized and the current increases, the magnetic field generated by the electromagnetic coil destroys the original balance, causing the baffle to approach the nozzle. The greater the current, the closer the baffle is to the nozzle, the less gas is discharged from the nozzle, and the pressure in the nozzle increases. At this time, the current is fixed, and a fixed high pressure is output inside the nozzle.

[0037] Fault inflation type: The distance between the nozzle and the baffle is adjusted to an initial close distance when leaving the factory. At this time, a very small part of the gas in the nozzle is discharged through the nozzle. At this time, the pressure in the nozzle is the largest. When the electromagnetic coil is energized and the current increases, the magnetic field generated by the electromagnetic coil destroys the original balance, causing the baffle to move away from the nozzle. The greater the current, the farther the baffle is from the nozzle, the more gas is discharged from the nozzle, and the pressure in the nozzle decreases. At this time, the current is fixed, and a fixed small pressure is output inside the nozzle.

[0038] The initial long distance is 0.3-0.4 mm between the nozzle and the baffle, and the initial short distance is 0-0.1 mm between the nozzle and the baffle.

[0039] In order to make the purpose, technical scheme and technical effect of the present invention clearer, the technical scheme in the embodiment of the present invention is now clearly and completely described. However, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. In combination with 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.

[0040] Embodiment 1:

[0041] A nozzle baffle for an intelligent positioner comprises a base 1, two magnetic conductive plates 2 are symmetrically arranged in the base 1, the magnetic conductive plates 2 are connected to the electromagnetic coil 4 through the magnetic conductive column 3, a magnetic conductive sheet 5 is arranged in the middle of the interval between the two magnetic conductive plates 2, the magnetic conductive sheets 5 are symmetrically arranged, the magnetic conductive sheets 5 are made of soft magnetic material, and a 90° bent portion 13 is arranged on the magnetic conductive sheet 5. A 1mm gap is arranged between the bent portion 13 and the permanent magnet 6 on the base 1, one side of the magnetic conductive sheet 5 is connected to a spring sheet 7 and a baffle 8 in sequence through screws, the spring sheet 7 is connected to the base 1 through bolts, and the two sides of the baffle 8 are respectively connected to the groove wall in the base through springs 9, and the two ends of the spring 9 are respectively positioned by positioning screws 14 and positioning screw pins 15.

[0042] The baffle plate 8 is vertically arranged with the nozzle 10 screwed in the base 1, and the nozzle 10 is screwed with the base 1. An air inlet hole 16 is arranged on the circumference of the nozzle 10 to communicate with the air path of the air inlet connector 12 connected to the base 1. By rotating the nozzle 10, a 0.3 mm gap is arranged between the air outlet end of the nozzle 10 and the baffle plate 8.

[0043] The working method of the nozzle baffle for the intelligent positioner in Example 1 is the fault exhaust type.

[0044] Embodiment 2:

[0045] A nozzle baffle for an intelligent positioner includes a base 1, two magnetic conductive plates 2 are symmetrically arranged in the base 1, the magnetic conductive plates 2 are connected to the electromagnetic coil 4 through the magnetic conductive column 3, a magnetic conductive sheet 5 is arranged in the middle of the interval between the two magnetic conductive plates 2, the magnetic conductive sheet 5 is arranged vertically to the magnetic conductive plates 2, and the distance between the two sides of the magnetic conductive sheet 7 and the magnetic plate 2 is consistent. The magnetic conductive sheets 5 are symmetrically arranged, the magnetic conductive sheets 5 are made of soft magnetic material, and a 90° bend 13 is arranged on the magnetic conductive sheet 5. A 1.2mm gap is arranged between the bend 13 and the permanent magnet 6 on the base 1, one side of the magnetic conductive sheet 5 is connected to the spring sheet 7 and the baffle 8 in sequence through screws, the spring sheet 7 is connected to the base 1 through bolts, and the two sides of the baffle 8 are respectively connected to the groove wall in the base through springs 9, and the two ends of the spring 9 are respectively positioned by positioning screws 14 and positioning screw pins 15.

[0046] The baffle 8 is vertically arranged with the nozzle 10 screwed in the base 1. The nozzle 10 is screwed with the base 1. The base 1 is provided with an air chamber, and the chamber is provided with an O-ring. The air inlet joint 12 on the base 1 is connected with the air chamber, and the nozzle 10 is provided with an air inlet hole 16 on the circumference thereof to be connected with the air chamber. The gas is introduced into the nozzle 10 through the air inlet joint 12 and ejected from the end of the nozzle. By rotating the nozzle 10, the air outlet end of the nozzle 10 is adjusted to be close to the baffle 8.

[0047] The working method of the nozzle baffle for the intelligent positioner in Example 2 is the fault exhaust type.

[0048] 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 basic spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nozzle baffle for an intelligent positioner, characterized in that: It includes a base, and two magnetic conductive plates are symmetrically arranged in the base. The magnetic conductive plates are connected to the electromagnetic coil through magnetic conductive columns. A magnetic conductive sheet is arranged in the middle of the interval between the two magnetic conductive plates. A gap is arranged between the magnetic conductive sheet and the permanent magnet on the base. One side of the magnetic conductive sheet is connected to a spring sheet and a baffle in sequence. The spring sheet is detachably connected to the base 1. Both sides of the baffle are connected to the groove wall in the base through springs respectively. The baffle is vertically arranged to a nozzle screwed in the base, and a distance is arranged between the air outlet end of the nozzle and the baffle.

2. The nozzle baffle for an intelligent positioner according to claim 1, characterized in that: The magnetic conductive sheets are symmetrically arranged, are made of soft magnetic material, and are provided with bending parts.

3. The nozzle baffle for an intelligent positioner according to claim 1, characterized in that: The magnetic conductive sheet is vertically arranged to the magnetic conductive plate, and the distance between the magnetic conductive sheet and the two magnetic conductive plates is consistent.

4. The nozzle baffle for an intelligent positioner according to claim 1, characterized in that: The magnetic conductive sheet, the spring sheet and the baffle are connected by screws.

5. The nozzle baffle for an intelligent positioner according to claim 1, characterized in that: The spring sheet is detachably connected to the base via connecting bolts.

6. The nozzle baffle for an intelligent positioner according to claim 1, characterized in that: An air inlet hole is arranged on the circumference of the nozzle and is communicated with the air path of the air inlet joint connected to the base.

7. The nozzle baffle for an intelligent positioner according to claim 1, characterized in that: The two ends of the spring are positioned by a positioning pin and a positioning screw respectively.

8. The working method of the nozzle baffle for the intelligent positioner according to claim 1, characterized in that: Including fault exhaust type and fault inflation type; Fault exhaust type: The distance between the nozzle and the baffle is adjusted to an initial long distance when leaving the factory. At this time, most of the gas in the nozzle is discharged through the nozzle. At this time, the pressure in the nozzle is the lowest. When the electromagnetic coil is energized and the current increases, the magnetic field generated by the electromagnetic coil destroys the original balance, causing the baffle to approach the nozzle. The greater the current, the closer the baffle is to the nozzle, the less gas is discharged from the nozzle, and the pressure in the nozzle increases. At this time, the current is fixed, and a fixed high pressure is output inside the nozzle. Fault inflation type: The distance between the nozzle and the baffle is adjusted to an initial close distance when leaving the factory. At this time, a very small part of the gas in the nozzle is discharged through the nozzle. At this time, the pressure in the nozzle is the largest. When the electromagnetic coil is energized and the current increases, the magnetic field generated by the electromagnetic coil destroys the original balance, causing the baffle to move away from the nozzle. The greater the current, the farther the baffle is from the nozzle, the more gas is discharged from the nozzle, and the pressure in the nozzle decreases. At this time, the current is fixed, and a fixed small pressure is output inside the nozzle.

9. A method for operating a nozzle baffle for an intelligent positioner according to claim 8, characterized in that: The initial long distance is 0.3-0.4 mm between the nozzle and the baffle, and the initial short distance is 0-0.1 mm between the nozzle and the baffle.

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