Iron movement testing device for pressure reducing valve

Abstract

The application discloses a kind of dynamic iron stroke test devices of pressure reducing valve, including base, stand, height gauge, support sleeve, support plate, pressure ring, coil assembly and adjustable push unit;Support sleeve is placed on base, coil assembly is vertically fixed in the inside of support sleeve, support plate is fixed with the upper end of support sleeve, the middle part of support plate is provided with through hole, the outer edge of the upper end of pressure reducing valve is supported on support plate, pressure ring is fixed with the upper end of support sleeve and is used to press tightly pressure reducing valve on support plate, adjustable push unit is connected in the lower end of support sleeve, and the push end of adjustable push unit is in abutment with the lower end of fixed iron in pressure reducing valve;The lower end of stand is fixed with the side of the upper end of base, height gauge is vertically connected on stand by height adjusting unit, and the measuring end of height gauge is vertically fixed with probe;The application can not only adjust the moving stroke of dynamic iron in pressure reducing valve, but also detect the moving stroke of dynamic iron in pressure reducing valve.

Description

Technical Field

[0001] This invention relates to the field of pressure reducing valve testing fixtures, specifically to a pressure reducing valve moving iron stroke testing device. Background Technology

[0002] In the production process of pressure reducing valves, in order to ensure the product quality, it is necessary to test the movement stroke of the moving iron inside the pressure reducing valve. Currently, when testing the movement stroke of the moving iron in a pressure reducing valve, it is first necessary to use a stroke setting device to set the movement stroke of the moving iron in the pressure reducing valve, and then use a stroke detection device to detect the movement stroke of the moving iron in the pressure reducing valve. That is, the detection of the movement stroke of the moving iron in the pressure reducing valve requires switching between two devices, which has the disadvantage of being inconvenient to detect the movement stroke of the moving iron in the pressure reducing valve. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a pressure reducing valve moving iron stroke testing device, which can not only adjust the movement stroke of the moving iron in the pressure reducing valve, but also detect the movement stroke of the moving iron in the pressure reducing valve.

[0004] The pressure reducing valve moving iron stroke testing device of the present invention includes a base, a column, a height gauge, a support sleeve, a support plate, a pressure ring, a coil assembly, and an adjustable pushing unit. The support sleeve is placed on the base, the coil assembly is vertically fixed inside the support sleeve, the support plate is fixed to the upper end of the support sleeve, and a through hole is provided in the middle of the support plate for the lower end of the pressure reducing valve to pass through so that the lower end of the pressure reducing valve can be inserted into the coil assembly. The outer edge of the upper end of the pressure reducing valve is supported on the support plate, and the pressure ring is fixed to the upper end of the support sleeve and is used to press the pressure reducing valve tightly against the support plate. Above, an adjustable jacking unit is connected to the lower end of the support sleeve, and the jacking end of the adjustable jacking unit abuts against the lower end of the fixed iron in the pressure reducing valve. The adjustable jacking unit is used to jack the fixed iron to adjust the vertical position of the fixed iron and the housing in the pressure reducing valve. The lower end of the column is fixed to one side of the upper end of the base. The height gauge is vertically connected to the column through the height adjustment unit. The measuring end of the height gauge has a probe fixed vertically. The height adjustment unit is used to adjust the height of the height gauge so that the lower end of the probe is inserted into the air outlet of the pressure reducing valve and abuts against the valve ball in the pressure reducing valve.

[0005] By adopting the above-described structure, this invention not only allows for the adjustment of the moving iron's travel distance in the pressure reducing valve, but also enables the detection of the moving iron's travel distance, thus facilitating the detection of the moving iron's travel distance in the pressure reducing valve.

[0006] The pressure reducing valve moving iron stroke testing device of the present invention includes an adjustable push unit comprising a connecting plate and an adjusting bolt. Both ends of the connecting plate are fixed to the lower end of a support sleeve by a first screw. A threaded hole is provided in the middle of the connecting plate, and the adjusting bolt passes through and is threadedly connected to the threaded hole. The upper end of the adjusting bolt abuts against the lower end of the fixed iron. When the adjusting bolt rotates relative to the connecting plate, it pushes the fixed iron to adjust the vertical position of the fixed iron relative to the housing in the pressure reducing valve. By employing this adjustable push unit, when the adjusting bolt is rotated to move upward relative to the connecting plate, the adjusting bolt can push the fixed iron upward, meaning the fixed iron can move upward relative to the housing of the pressure reducing valve to further compress the spring located in the pressure reducing valve. When the adjusting bolt is rotated to move downward relative to the connecting plate, the fixed iron can move downward relative to the housing of the pressure reducing valve under the push of the spring in the pressure reducing valve. Through the above process, under the action of the adjustable push unit, the vertical position of the fixed iron relative to the housing in the pressure reducing valve can be changed, thereby changing the movement stroke of the moving iron when the coil assembly is energized or de-energized.

[0007] The pressure reducing valve moving iron stroke testing device of the present invention includes a horizontal through-hole provided on the head of the lower end of the adjusting bolt. The through-hole is used for inserting a rod to rotate the adjusting bolt. After the through-hole is provided on the head of the adjusting bolt, the rod can be inserted into the through-hole to rotate the adjusting bolt. For example, one end of an external hex wrench is inserted into the through-hole and the adjusting bolt is rotated by turning the external hex wrench.

[0008] The pressure reducing valve moving iron stroke testing device of the present invention includes a height adjustment unit comprising a connecting block, with a first clamping groove and a second clamping groove respectively provided at both ends of the connecting block. A column passes through the first clamping groove, and the connecting block is fixed to the column by a second screw threaded to the opening end of the first clamping groove. A height gauge passes through the second clamping groove and is fixed to the connecting block by a third screw passing through the opening end of the second clamping groove. With this structure, when the second screw is loosened, the connecting block can move vertically relative to the column, thereby adjusting the height gauge to the required height. When the second screw is tightened, the connecting block can be fastened to the column. Similarly, when the third screw is tightened, the height gauge can be fastened to the connecting block.

[0009] The pressure reducing valve moving iron stroke testing device of the present invention includes a support plate whose two ends are fixed to the upper end of the support sleeve by a fourth screw that passes through the support plate and is threaded to the upper end of the support sleeve; by adopting this structure, the support plate can be reliably and conveniently fixed to the upper end of the support sleeve.

[0010] The pressure reducing valve moving iron stroke testing device of the present invention includes a plurality of fifth screws that are vertically movable through the edge of the pressure ring and are evenly distributed circumferentially. The upper end of the support sleeve is provided with screw holes that are vertically corresponding to each of the fifth screws. Each fifth screw is threadedly connected to the screw hole at the corresponding position. The pressure ring is fixed to the upper end of the support sleeve by the plurality of fifth screws. With this structure, the pressure ring can be reliably and conveniently fixed to the upper end of the support sleeve and the pressure reducing valve can be pressed against the support plate.

[0011] The pressure reducing valve moving iron stroke testing device of the present invention includes an annular groove on the outer wall of the pressure ring. The annular groove is used for the tip of a finger to be inserted to facilitate placing or removing the pressure ring onto or from the support sleeve. With this structure, the tip of the finger can be inserted into the annular groove during the process of removing or placing the pressure ring onto or from the support sleeve, thereby avoiding slippage between the finger and the pressure ring and making it convenient to pick up and put down the pressure ring. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the first three-dimensional structure of the present invention after removing the base, column, connecting block and height gauge;

[0015] Figure 3 This is a schematic diagram of the second three-dimensional structure of the present invention after removing the base, column, connecting block and height gauge;

[0016] Figure 4 This is a partially exploded three-dimensional structural diagram of the present invention after removing the base, column, connecting block and height gauge;

[0017] Figure 5 This is a cross-sectional view of the present invention after removing the base, column, connecting block and height gauge;

[0018] Figure 6 for Figure 5 A magnified structural diagram of point A in the middle. Detailed Implementation

[0019] The following drawings disclose several embodiments of the present invention. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0020] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed by this invention.

[0021] like Figure 1-6 As shown, the pressure reducing valve moving iron stroke testing device of the present invention includes a base 1, a column 2, a height gauge 3, a support sleeve 4, a support plate 5, a pressure ring 6, a coil assembly 7, and an adjustable pushing unit. The support sleeve 4 is placed on the base 1, the coil assembly 7 is vertically fixed inside the support sleeve 4, the support plate 5 is fixed to the upper end of the support sleeve 4, and a through hole 51 is provided in the middle of the support plate 5. The through hole 51 is used for the lower end of the pressure reducing valve 8 to pass through so that the lower end of the pressure reducing valve 8 can be inserted into the coil assembly 7. The outer edge of the upper end of the pressure reducing valve 8 is supported on the support plate 5, and the pressure ring 6 is fixed to the upper end of the support sleeve 4 and is used to press the pressure reducing valve 8 against the support plate. 5. An adjustable jacking unit is connected to the lower end of the support sleeve 4, and the jacking end of the adjustable jacking unit abuts against the lower end of the fixed iron 81 in the pressure reducing valve 8. The adjustable jacking unit is used to jack the fixed iron 81 to adjust the vertical position of the fixed iron 81 and the housing 82 in the pressure reducing valve 8. The lower end of the column 2 is fixed to one side of the upper end of the base 1. The height gauge 3 is vertically connected to the column 2 through the height adjustment unit. The measuring end of the height gauge 3 is vertically fixed with a probe 31. The height adjustment unit is used to adjust the height of the height gauge 3 so that the lower end of the probe 31 is inserted into the air outlet 83 of the pressure reducing valve 8 and abuts against the valve ball 84 in the pressure reducing valve 8.

[0022] The adjustable jacking unit includes a connecting plate 91 and an adjusting bolt 92. Both ends of the connecting plate 91 are fixed to the lower end of the support sleeve 4 by a first screw 93. A threaded hole 911 is provided in the middle of the connecting plate 91. The adjusting bolt 92 passes through the threaded hole 911 and is threadedly connected to it. The upper end of the adjusting bolt 92 abuts against the lower end of the fixed iron 81. When the adjusting bolt 92 rotates relative to the connecting plate 91, it pushes the fixed iron 81 to adjust the vertical position of the fixed iron 81 relative to the housing 82 in the pressure reducing valve 8. By adopting this adjustable jacking unit, When the adjusting bolt is rotated to move it upward relative to the connecting plate, the adjusting bolt pushes the fixed iron upward, meaning the fixed iron moves upward relative to the housing of the pressure reducing valve, further compressing the spring located in the pressure reducing valve. When the adjusting bolt is rotated to move it downward relative to the connecting plate, the fixed iron moves downward relative to the housing of the pressure reducing valve under the push of the spring in the pressure reducing valve. Through the above process, under the action of the adjustable pushing unit, the vertical position of the fixed iron relative to the housing in the pressure reducing valve can be changed, thereby changing the travel of the moving iron when the coil assembly is energized or de-energized.

[0023] The head 921 at the lower end of the adjusting bolt 92 is provided with a horizontal insertion hole 922 that passes through the head 921. The insertion hole 922 is used for inserting a rod to rotate the adjusting bolt 92. After the insertion hole is provided on the head of the adjusting bolt, the rod can be inserted into the insertion hole to rotate the adjusting bolt. For example, one end of an external hex wrench can be inserted into the insertion hole and the adjusting bolt can be rotated by turning the external hex wrench.

[0024] The height adjustment unit includes a connecting block 10, with a first clamping groove 101 and a second clamping groove 102 at both ends. The column 2 passes through the first clamping groove 101. The connecting block 10 is fixed to the column 2 by a second screw threaded to the opening end of the first clamping groove 101. The height gauge 3 passes through the second clamping groove 102 and is fixed to the connecting block 10 by a third screw passing through the opening end of the second clamping groove 102. With this structure, when the second screw is loosened, the connecting block can move vertically relative to the column, thereby adjusting the height gauge to the required height. When the second screw is tightened, the connecting block is secured to the column. Similarly, when the third screw is tightened, the height gauge is secured to the connecting block.

[0025] Both ends of the support plate 5 are fixed to the upper end of the support sleeve 4 by a fourth screw 52 that passes through the support plate 5 and is threaded to the upper end of the support sleeve 4; by adopting this structure, the support plate can be reliably and conveniently fixed to the upper end of the support sleeve.

[0026] Several fifth screws 61 are vertically and circumferentially evenly distributed through the edge of the pressure ring 6. The upper end of the support sleeve 4 is provided with screw holes 41 that correspond vertically to each fifth screw 61. Each fifth screw 61 is threadedly connected to the corresponding screw hole 41. The pressure ring 6 is fixed to the upper end of the support sleeve 4 by several fifth screws 61. With this structure, the pressure ring can be reliably and conveniently fixed to the upper end of the support sleeve and press the pressure reducing valve against the support plate.

[0027] The outer wall of the pressure ring 6 is provided with an annular groove 62, which is used for the tip of the finger to be inserted to facilitate placing the pressure ring 6 on or removing it from the support sleeve 4. With this structure, the tip of the finger can be inserted into the annular groove during the process of removing or placing the pressure ring from or onto the support sleeve, thereby avoiding slippage between the finger and the pressure ring and making it convenient to pick up and put down the pressure ring.

[0028] When testing the stroke of a pressure reducing valve in this invention, the lower end of the pressure reducing valve to be tested is first inserted into the coil assembly through the through hole on the support plate. Next, the pressure cap is fixed to the upper end of the support sleeve so that the pressure cap presses the outer edge of the upper end of the pressure reducing valve tightly against the support plate. Then, the height of the height gauge is adjusted using the height adjustment unit so that the lower end of the probe is inserted into the air outlet of the pressure reducing valve and abuts against the valve ball. The height gauge is then zeroed, and the power to the coil assembly is turned on. At this time, the moving iron in the pressure reducing valve, under the action of the coil assembly, can drive the valve ball to move downwards, that is, the probe connected to the measuring end of the height gauge can move downwards, thereby allowing the height to be measured. The travel distance of the moving iron is measured using a gauge. If the travel distance of the moving iron is greater than the standard value, the power supply to the coil assembly is disconnected, and the adjusting bolt is rotated to push the fixed iron upward. If the travel distance of the moving iron is less than the standard value, the power supply to the coil assembly is disconnected, and the adjusting bolt is rotated to move the adjusting bolt downward. At this time, the fixed iron can move downward. After the vertical position of the fixed iron relative to the housing of the pressure reducing valve is adjusted, the above steps are repeated until the travel distance of the moving iron is adjusted to the standard value. This allows the position of the fixed iron relative to the housing of the pressure reducing valve to be calibrated, which in turn allows for the calibration and comparison of the pressure reducing valve production equipment.

[0029] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A device for testing the ironing stroke of a pressure reducing valve, characterized in that: The utility model provides a height adjustable type pressure reducing valve, including base (1), stand (2), height gauge (3), support sleeve (4), support plate (5), compression ring (6), coil assembly (7) and adjustable push unit, support sleeve (4) places on base (1), coil assembly (7) is vertically fixed in the inside of support sleeve (4), support plate (5) is fixed with the upper end of support sleeve (4), the middle part of support plate (5) is provided with through -hole (51), through -hole (51) is used for the lower end of pressure reducing valve (8) passes through to make the lower end of pressure reducing valve (8) inserts into coil assembly (7), the outer edge of pressure reducing valve (8) upper end supports on support plate (5), compression ring (6) is fixed with the upper end of support sleeve (4) and is used for the pressure of pressure reducing valve (8) is tightly pressed on support plate (5), adjustable push unit is connected in the lower end of support sleeve (4) and the push end of adjustable push unit and the lower end of fixed iron (81) in pressure reducing valve (8) are in abutment, and adjustable push unit is used for pushing fixed iron (81) to adjust the vertical position of fixed iron (81) and the shell (82) in pressure reducing valve (8);The lower end of stand (2) is fixed with one side of base (1) upper end, and height gauge (3) is vertically connected on stand (2) through height adjusting unit, and the measuring end of height gauge (3) is vertically fixed with probe (31), and height adjusting unit is used for adjusting the height of height gauge (3) to make the lower end of probe (31) insert into the air outlet (83) of pressure reducing valve (8) and abut with valve ball (84) in pressure reducing valve (8).

2. The reduced pressure valve actuation ironing stroke testing device of claim 1, wherein, The adjustable push unit includes a connecting plate (91) and an adjusting bolt (92), both ends of the connecting plate (91) are fixed with the lower end of the support sleeve (4) through a first screw (93), the middle part of the connecting plate (91) is provided with a threaded hole (911), the adjusting bolt (92) is threaded into the threaded hole (911) and is screwed with the threaded hole (911), the upper end of the adjusting bolt (92) abuts with the lower end of the fixed iron (81), when the adjusting bolt (92) rotates relative to the connecting plate (91), the adjusting bolt (92) is used to push the fixed iron (81) to adjust the vertical position of the fixed iron (81) and the shell (82) in the pressure reducing valve (8).

3. The reduced pressure valve moving iron stroke testing device of claim 2, wherein, The head (921) of the lower end of the adjusting bolt (92) is provided with a jack (922) horizontally penetrating the head (921), the jack (922) is used for inserting a rod to facilitate the rotation of the adjusting bolt (92).

4. The valve dynamic ironing travel testing apparatus of any of claims 1-3, wherein, The height adjusting unit includes a connecting block (10), both ends of the connecting block (10) are provided with a first clamping groove (101) and a second clamping groove (102) respectively, the stand (2) is threaded into the first clamping groove (101), the connecting block (10) is fixed with the stand (2) through a second screw at the opening end of the first clamping groove (101), the height gauge (3) is threaded into the second clamping groove (102), and the height gauge (3) is fixed with the connecting block (10) through a third screw at the opening end of the second clamping groove (102).

5. The valve actuator stroke testing apparatus of any one of claims 1-3, wherein, Both ends of the support plate (5) are fixed to the upper end of the support sleeve (4) by a fourth screw (52) threaded through the support plate (5) and screwed to the upper end of the support sleeve (4).

6. The valve actuator stroke testing apparatus of any one of claims 1-3, wherein, A fifth screw (61) is vertically movably threaded through the edge of the pressing ring (6) and is uniformly distributed in a circle. The upper end of the support sleeve (4) is provided with a screw hole (41) vertically corresponding to each fifth screw (61). Each fifth screw (61) is screwed to the screw hole (41) at the corresponding position. The pressing ring (6) is fixed to the upper end of the support sleeve (4) by the fifth screws (61).

7. The reduced pressure valve actuation ironing stroke testing device of claim 6, wherein, An annular groove (62) is arranged on the outer wall of the pressing ring (6). The annular groove (62) is used for embedding the end of a finger to facilitate placing or removing the pressing ring (6) on or from the support sleeve (4).

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