A ball type pressure reducing valve adjusting tool

Abstract

The utility model relates to the field of semiconductor parts manufacturing discloses a ball type pressure reducing valve adjusting tool, it includes: first upper seat and second upper seat fixed connection integral, the aeration adjusting part sets up on first upper seat and second upper seat, the bottom of second upper seat is connected with the top of lower seat, forms the containing cavity of the ball type pressure reducing valve of waiting for adjusting pressure between both, and the pressure regulating part sets up on lower seat, first interface and second interface are arranged respectively on both sides of first upper seat, first interface and second interface do not communicate with each other, one side of lower seat is provided with third interface, first interface forms the aeration gas circuit in the bellows of waiting for adjusting pressure ball type pressure reducing valve in containing cavity, and the pressure in this aeration gas circuit is adjusted through aeration adjusting part, third interface forms the pressure regulating gas circuit to second interface, and the pressure in this pressure regulating gas circuit is adjusted through pressure regulating part. The utility model can effectively reduce the difficulty of mediation, has improved the reliability and production efficiency of ball type pressure reducing valve.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor component manufacturing, and in particular to a ball-shaped pressure reducing valve regulating fixture. Background Technology

[0002] A ball-shaped pressure reducing valve, named for its spherical shape, is primarily used to reduce input pressure to output pressure. Typically, it's installed inside a gas cylinder to reduce the output gas pressure to a suitable range. Existing patent documents CN115992861B, CN112074686B, CN104813095B, ​​and US5694975A ​​represent currently mainstream ball-shaped pressure reducing valve patents. Their main principle is: the lowermost lifting valve core and baffle carry the airflow, compressing the spring and bellows, causing the opening between the lifting valve core and the air inlet to decrease, thus reducing the output gas pressure. In other words, it reduces the pressure in the regulating gas path.

[0003] However, existing ball-type pressure reducing valves have significant shortcomings in manufacturing and commissioning. Specifically, during assembly or maintenance, it is usually necessary to tighten and adjust components such as sealing screws or lifting valve cores under venting conditions to ensure that the pressure reducing valve's performance meets design requirements. This process is not only cumbersome and requires a high level of operator skill, but it is also prone to causing poor sealing or unstable pressure output due to improper adjustment. In addition, since the adjustment process must be carried out under venting conditions, there are certain safety risks, and it also increases the production cycle and manufacturing costs. Therefore, there is an urgent need to provide an easy-to-operate integrated tooling to achieve dynamic regulation of bellows inflation and pressure. Summary of the Invention

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a ball-type pressure reducing valve adjustment tooling, which can effectively reduce the adjustment difficulty and improve the reliability, safety, and production efficiency of the ball-type pressure reducing valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a spherical pressure reducing valve adjustment fixture, comprising: a first upper seat, a second upper seat, a lower seat, an inflation adjustment part, and a pressure regulating part; the first upper seat and the second upper seat are fixedly connected as one unit, and the inflation adjustment part is disposed on the first upper seat and the second upper seat; the bottom of the second upper seat is connected to the top of the lower seat, forming a receiving cavity for the spherical pressure reducing valve to be adjusted, and the pressure regulating part is disposed on the lower seat; a first interface and a second interface are respectively disposed on both sides of the first upper seat, the first interface and the second interface are not connected to each other, and a third interface is disposed on one side of the lower seat; wherein, a first air passage is formed from the first interface to the bellows of the spherical pressure reducing valve to be adjusted in the receiving cavity, which is an inflation air passage, and the pressure in the inflation air passage is adjusted by the inflation adjustment part; a second air passage is formed from the third interface to the second interface, which is a pressure regulating air passage, and the pressure in the pressure regulating air passage is adjusted by the pressure regulating part.

[0006] Furthermore, the inflation adjustment unit includes a handle cover, an upper ejector pin, an upper pressure cap nut, and a cylindrical spring; wherein, the upper ejector pin consists of a limiting section, an adjusting section, and an ejector pin section; The top of the first upper seat is provided with a first limiting groove that communicates with the upper vent. The upper part of the limiting section and the adjusting section of the upper ejector pin are inserted into the first limiting groove, and a column spring is sleeved in the adjusting section in the first limiting groove. One end of the column spring contacts the bottom of the first limiting groove, and the other end contacts the bottom end face of the limiting section of the upper ejector pin. The upper end of the limiting section of the upper ejector pin is located outside the first upper seat. The top of the first upper seat is provided with an upper pressure cap nut. The upper ejector pin is threadedly connected to the upper pressure cap nut so that the upper ejector pin is limited by the upper pressure cap nut. A handle cover is provided at the upper end of the limiting section. The adjusting section and the pin section of the upper ejector pin pass through the upper through hole. The pin section extends into the valve body of the ball-type pressure reducing valve to be adjusted and can contact the sealing screw for adjusting the sealing screw.

[0007] Furthermore, a first protective sleeve is fitted over the upper part of the ball-shaped pressure reducing valve to be adjusted within the upper vent hole of the second upper seat, and a second protective sleeve is fitted over the limiting section and the outer part of the upper ejector pin section.

[0008] Furthermore, the pressure regulating part includes a lower ejector pin and a lower pressure cap nut; wherein, the lower ejector pin is integrally formed by a lever and a rotary adjusting section; The top of the rotating adjustment section of the lower ejector pin is located in the second limiting groove, and the bottom of the rotating adjustment section is located outside the lower seat. The bottom of the lower seat is provided with a lower pressure cap nut. The lower ejector pin is threadedly connected to the lower pressure cap nut so as to limit the lower ejector pin through the lower pressure cap nut. The bottom end of the rotating adjustment section is provided with a handle cover. The lever of the lower ejector pin enters the ball-shaped pressure reducing valve to be adjusted along the lower vent hole, and there is a gap between it and the valve body. It contacts the lifting valve core of the ball-shaped pressure reducing valve to be adjusted, and the tightening force of the lifting valve core is adjusted by the lower ejector pin.

[0009] Furthermore, a third protective sleeve is fitted over the lower part of the ball-shaped pressure reducing valve to be adjusted, located inside the lower vent of the lower seat.

[0010] Furthermore, an upper through hole is provided at the center of the first upper seat and the second upper seat, the first interface is connected to the upper part of the upper through hole, and the bottom of the upper through hole is connected to the accommodating cavity; an upper sealing ring is provided at the bottom of the second upper seat to seal the second upper seat with the top of the ball pressure reducing valve to be adjusted.

[0011] Furthermore, a lower vent is provided at the center of the lower seat, and the third interface is connected to the lower vent; a second limiting groove connected to the lower vent is provided at the bottom of the lower seat; and a sealing ring is provided at the top of the lower seat to seal the lower seat to the bottom of the ball pressure reducing valve to be adjusted.

[0012] Furthermore, the end of the ejector pin section of the upper ejector pin is a hexagonal wrench, which is matched with the hexagonal bolt on the top of the sealing screw.

[0013] Furthermore, the end of the lower ejector pin's lever is a hexagonal wrench, which is matched with the hexagonal bolt at the bottom of the lifting valve core.

[0014] Furthermore, a sealing O-ring is provided between the limiting section of the upper ejector pin and the first upper seat.

[0015] This utility model has the following advantages due to the adoption of the above technical solution: The tooling of this invention enables precise and stable adjustment of the ball-type pressure reducing valve, resulting in more accurate pressure settings. Simultaneously, the integrated structure reduces the cumulative errors and risk of loosening associated with assembling multiple parts individually, enhancing the overall structural stability and thus improving the long-term stability and repeatability of the pressure reducing valve's output pressure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the ball-shaped pressure reducing valve adjusting tool in this utility model embodiment; Figure 2 yes Figure 1 Top view; Figure 3 This is a color cross-sectional view of the ball-shaped pressure reducing valve adjusting fixture in the embodiment of this utility model, where green represents the air charging path and yellow represents the pressure regulating path; Figure 4 yes Figure 3 A partially enlarged schematic diagram of the upper ejector pin, the cylindrical spring, and the first limiting groove; Figure 5 yes Figure 3 A partially enlarged schematic diagram of the inflation and pressure regulating air paths at the upper center pin, the first upper seat, and the second upper seat; Figure 6 yes Figure 3 A partially enlarged schematic diagram of the pressure regulating air passage and the charging air passage at the sealing screw inside the ball-shaped pressure reducing valve body; Figure 7 yes Figure 3 A partially enlarged schematic diagram of the pressure regulating air path at the lower and middle ejector pins and the lifting valve core; Explanation of reference numerals in the attached figures: 1-Handle cover; 2-Upper ejector pin, 201-Limiting section, 202-Adjusting section, 203-Ejector pin section; 3-Upper pressure cap nut; 4-Sealing O-ring; 5-First upper seat; 6-Second upper seat; 7-First protective sleeve; 8-Second protective sleeve; 9-Fixing bolt; 10-Third protective sleeve; 11-Lower seat; 12-Lower ejector pin, 121-Wrench, 122-Rotational adjusting section; 13-Spherical pressure reducing valve lift valve core (for adjusting valve outlet pressure); 14-Spherical pressure reducing valve body; 15-Sealing ring; 16-Connector nut; 17-Welded joint; 18-Sealing screw (sealing screw of spherical pressure reducing valve, with an air filling channel); 19-Cylindrical spring; 20-Accommodating cavity; 21-First interface; 22-Second interface; 23-Third interface; 24-First limiting groove; 25-Second limiting groove; 26-Lower pressure cap nut. Detailed Implementation

[0017] To accurately adjust the pressure regulating capability of the pressure reducing valve, the external pressure regulating air path and the internal air charging air path of the bellows will be described in detail.

[0018] (1) Inflation air path: Since the sealing screw is the sealing element for the air inlet and outlet inside the bellows, it is usually necessary to tighten the sealing screw under high pressure inside the bellows, so that a certain expansion force is maintained inside the bellows, thereby reducing the pressure reducing capacity of the pressure reducing valve. Usually, a specified pressure of gas needs to be introduced into the threaded opening of the self-sealing screw before the sealing screw can be tightened, so as to adjust the pressure reducing valve to an appropriate pressure reducing capacity. The bellows from the first interface 21 to the ball pressure reducing valve is the inflation air path.

[0019] (2) Pressure regulating gas path: Since the valve stem of the lifting valve core and the baffle are threaded, turning the lifting valve core upwards increases the pressure reducing capacity of the pressure reducing valve, while turning it downwards decreases it. When adjusting the lifting valve core, high-pressure gas needs to be continuously introduced from bottom to top to accurately adjust the height of the lifting valve core, so as to accurately adjust the pressure reducing capacity of the pressure reducing valve. From the third port 23 to the second port 22, the yellow gas path is the pressure regulating gas path.

[0020] Therefore, in the existing technology, both the sealing screw and the lifting valve core need to be tightened while in a ventilated state, which increases the difficulty of manufacturing and adjustment. This utility model provides a ball-shaped pressure reducing valve adjustment fixture, which adjusts the pressure in the inflation air circuit through the inflation adjustment part and adjusts the pressure in the pressure regulating air circuit through the pressure regulating part, thereby achieving precise adjustment of the ball-shaped pressure reducing valve.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof; the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In one embodiment of this utility model, a ball-type pressure reducing valve adjusting fixture is provided, particularly relating to adjusting the sealing screw of the charging air path and the lifting valve core of the pressure regulating air path of the ball-type pressure reducing valve. In this embodiment, as shown... Figures 1 to 7 As shown, the ball-shaped pressure reducing valve adjusting fixture includes: a first upper seat 5, a second upper seat 6, a lower seat 11, an air filling adjusting part, and a pressure adjusting part.

[0024] The first upper seat 5 and the second upper seat 6 are fixedly connected as one unit, and the inflation adjustment part is set on the first upper seat 5 and the second upper seat 6.

[0025] The bottom of the second upper seat 6 is connected to the top of the lower seat 11, forming a receiving cavity 20 for the pressure-regulating ball valve, and the pressure regulating part is provided on the lower seat 11.

[0026] A first interface 21 and a second interface 22 are respectively provided on both sides of the first upper seat 5. The first interface 21 and the second interface 22 are not connected to each other. A third interface 23 is provided on one side of the lower seat 11. The first interface 21 forms a first air passage to the bellows of the ball pressure reducing valve to be adjusted in the accommodating cavity 20. This is an inflation air passage. The pressure in this inflation air passage is adjusted by the inflation regulating part. The third interface 23 forms a second air passage to the second interface 22. This is a pressure regulating air passage. The pressure in this pressure regulating air passage is adjusted by the pressure regulating part.

[0027] In use, the pressure in the inflation circuit is adjusted by the inflation regulating section, and the pressure in the pressure regulating circuit is adjusted by the pressure regulating section, thus achieving precise adjustment of the ball pressure reducing valve.

[0028] In the above embodiments, such as Figure 3 As shown, an upper through hole is provided at the center of the first upper seat 5 and the second upper seat 6. The first interface 21 communicates with the upper part of the upper through hole, and the bottom of the upper through hole communicates with the receiving cavity 20. An upper sealing ring 15 is provided at the bottom of the second upper seat 6 to seal the second upper seat 6 with the top of the ball pressure reducing valve to be adjusted. In this embodiment, the upper sealing ring 15 can be a sealing silicone gasket.

[0029] In the above embodiments, such as Figure 3 , Figure 4 As shown, the inflation adjustment part includes a handle cover 1, an upper ejector pin 2, an upper pressure cap nut 3, and a cylindrical spring 19. The upper ejector pin 2 is composed of a limiting section 201, an adjusting section 202, and an ejector pin section 203.

[0030] The top of the first upper seat 5 is provided with a first limiting groove 24 communicating with the upper vent. The upper limiting section 201 and the upper adjusting section 202 of the upper ejector pin 2 pass through the first limiting groove 24, and a column spring 19 is sleeved on the adjusting section 202 in the first limiting groove 24. One end of the column spring 19 contacts the bottom of the first limiting groove 24, and the other end contacts the bottom end face of the limiting section 201 of the upper ejector pin 2. The upper end of the limiting section 201 of the upper ejector pin 2 is located outside the first upper seat 5. The top of the first upper seat 5 is provided with an upper pressure cap nut 3. The upper ejector pin 2 is threadedly connected to the upper pressure cap nut 3 so as to connect the upper ejector pin 2 to the top of the first upper seat 5 through the upper pressure cap nut 3, and the upper pressure cap nut 3 limits the upper ejector pin 2. A handle cover 1 is provided at the upper end of the limiting section 201 to facilitate the adjustment of the upper ejector pin 2. When in use, the handle cover 1 can be configured with a column spring 19 so that the upper pin 2 can be pressed down and rotated when in use, and will not rotate when not in use.

[0031] The adjusting section 202 and the pin section 203 of the upper pin 2 pass through the upper through hole. The pin section 203 extends into the valve body 14 of the ball pressure reducing valve to be adjusted, and is located above the sealing screw 18 to contact the sealing screw 18 for adjusting the sealing screw 18.

[0032] In this embodiment, a first protective sleeve 7 is provided on the upper part of the ball pressure reducing valve to be adjusted, located in the upper vent of the second upper seat 6, and a second protective sleeve 8 is provided on the outside of the limiting section 201 and the ejector section 203 of the upper ejector pin 2, so as to avoid friction between the ball pressure reducing valve to be adjusted and the upper vent, and between the upper ejector pin 2 and the ball pressure reducing valve to be adjusted.

[0033] Among them, such as Figures 3 to 6 As shown, when the inflation circuit is inflated, the preset pressure inflation gas enters through the first interface 21, passes downward along the gap between the upper ejector pin 2 and the upper vent hole inside the first upper seat 5, enters the valve core along the gap between the upper ejector pin 2 and the second protective sleeve 8, and enters the bellows through the inflation channel inside the sealing screw 18, so that the bellows has a corresponding expansion force.

[0034] In this embodiment, a sealing O-ring 4 is provided between the limiting section 201 of the upper ejector pin 2 and the first upper seat 5. The upper ejector pin 2 can be rotatably and axially moved in a sealed connection with the first upper seat 5 through the sealing O-ring 4 to ensure that the air intake of the first interface 21 is sealed.

[0035] In this embodiment, the end of the ejector pin 203 of the upper ejector pin 2 is a hexagonal wrench, which is matched with the hexagonal bolt on the top of the sealing screw 18. If the top of the sealing screw 18 is an internal hexagonal bolt, then the end of the ejector pin 203 is an external hexagonal wrench; if the top of the sealing screw 18 is an external hexagonal bolt, then the end of the ejector pin 203 is an internal hexagonal wrench.

[0036] In the above embodiment, a lower vent hole is provided at the center of the lower seat 11, and the third interface 23 communicates with the lower vent hole; a second limiting groove 25 communicating with the lower vent hole is provided at the bottom of the lower seat 11. A sealing ring 15 is provided at the top of the lower seat 11 to seal the lower seat 11 with the bottom of the ball pressure reducing valve to be adjusted.

[0037] In the above embodiment, the pressure regulating part includes a lower ejector pin 12 and a lower pressure cap nut 26. The lower ejector pin 12 is integrally formed by a lever 121 and a rotary adjustment section 122.

[0038] The top of the rotating adjustment section 122 of the lower ejector pin 12 is located in the second limiting groove 25, and the bottom of the rotating adjustment section 122 is located outside the lower seat 11. The bottom of the lower seat 11 is provided with a lower pressure cap nut 26. The lower ejector pin 12 is threadedly connected to the lower pressure cap nut 26 so as to connect the lower ejector pin 12 to the bottom of the lower seat 11 through the lower pressure cap nut 26, and the lower pressure cap nut 26 limits the lower ejector pin 12. The bottom end of the rotating adjustment section 122 is provided with a handle cover 1.

[0039] The lever 121 of the lower ejector pin 12 enters the ball pressure reducing valve to be adjusted along the lower vent hole and has a gap with the valve body. It contacts the lifting valve core 13 of the ball pressure reducing valve to be adjusted so that the tightening force of the lifting valve core 13 can be adjusted by the lower ejector pin 12.

[0040] In this embodiment, a third protective sleeve 10 is provided on the lower part of the ball pressure reducing valve to be adjusted inside the lower vent hole of the lower seat 11 to avoid friction between the ball pressure reducing valve to be adjusted and the lower vent hole.

[0041] Among them, such as Figures 4 to 7 As shown, when the pressure regulating gas circuit is filled with gas, the preset pressure filling gas enters the lower vent through the third interface 23, enters the accommodating cavity of the ball valve core through the gap between the lower ejector pin 12 and the valve body, and the filling gas does not contact the inside of the ball valve core; then it flows out of the valve body through the gap between the second protective sleeve 8 and the upper part of the valve body, and flows out through the upper vent and the second interface 22 connected to the upper vent.

[0042] In this embodiment, a sealing O-ring 4 is provided between the rotation adjustment section 122 of the lower ejector pin 12 and the second limiting groove 25 of the lower seat 11. The lower ejector pin 12 can be rotatably and axially moved in a sealed connection with the lower seat 11 through the sealing O-ring to ensure that the air intake of the third interface 23 is sealed.

[0043] In this embodiment, the end of the wrench 121 of the lower ejector pin 12 is a hexagonal wrench, which is matched with the hexagonal bolt at the bottom of the lifting valve core 13. If the bottom of the lifting valve core 13 is an internal hexagonal bolt, then the end of the wrench 121 is an external hexagonal wrench; if the bottom of the lifting valve core 13 is an external hexagonal bolt, then the end of the wrench 121 is an internal hexagonal wrench.

[0044] In the above embodiments, the first upper seat 5 and the second upper seat 6 can be fixed by welding, and the second upper seat 6 and the lower seat 11 can be connected by fixing bolts 9.

[0045] In the above embodiments, the first interface 21, the second interface 22 and the third interface 23 are all composed of a welding joint 17 and a joint nut 16. One end of the joint nut 16 is connected to the welding joint 17, and the other end of the joint nut 16 is used to connect to an external air source.

[0046] In summary, this utility model, during use, utilizes the inflation air path to inflate the inner core and adjust its pressure; and utilizes the pressure regulating air path to adjust its pressure regulation performance. Specifically: (1) When the air charging circuit is working: the ball pressure reducing valve to be adjusted should be operated according to... Figure 1After assembly, first inflate the valve core with air. The inflation pressure is set according to the usage requirements, for example, 1 MPa. When the pressure in the bellows pipeline reaches 1 MPa, press down on the handle cover 1 while rotating it clockwise. At this time, the upper pin 2 will move downward and rotate to tighten the sealing screw 18, thus sealing the pressure inside the valve core. Then, release the handle cover 1. Due to the action of the column spring 19, the handle cover 1 and the valve needle assembly will automatically spring back upward.

[0047] (2) Working principle of the pressure regulating air circuit: The ball pressure reducing valve to be regulated operates according to... Figure 1 After assembling the inner core and purging it with air, the factory parameters are adjusted. The factory parameters mainly adjust the tightening force of the lifting valve core 13. The first port 21 and the third port 23 are always connected to the test air circuit (the data changes constantly). The tightening force of the lifting valve core 13 is adjusted by adjusting the lower pin 12 at the same time, which means adjusting with pressure.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ball-type pressure reducing valve regulating fixture, characterized in that, include: First upper seat (5), second upper seat (6), lower seat (11), inflation adjustment section and pressure adjustment section; The first upper seat (5) and the second upper seat (6) are fixedly connected as one unit, and the inflation adjustment part is set on the first upper seat (5) and the second upper seat (6); The bottom of the second upper seat (6) is connected to the top of the lower seat (11), and the two form a receiving cavity (20) for the pressure-regulating ball pressure reducing valve, and the pressure regulating part is set on the lower seat (11); A first interface (21) and a second interface (22) are respectively provided on both sides of the first upper seat (5). The first interface (21) and the second interface (22) are not connected to each other. A third interface (23) is provided on one side of the lower seat (11). The first interface (21) forms a first air path to the bellows of the ball pressure reducing valve to be adjusted in the accommodating cavity (20), which is an inflation air path. The pressure in the inflation air path is adjusted by the inflation adjustment part. The third interface (23) forms a second air path to the second interface (22), which is a pressure regulating air path. The pressure in the pressure regulating air path is adjusted by the pressure regulating part.

2. The ball-type pressure reducing valve adjusting fixture as described in claim 1, characterized in that, The inflation adjustment part includes a handle cover (1), an upper ejector pin (2), an upper pressure cap nut (3), and a cylindrical spring (19); wherein, the upper ejector pin (2) is composed of a limiting section (201), an adjustment section (202), and an ejector pin section (203); The top of the first upper seat (5) is provided with a first limiting groove (24) that communicates with the upper vent. The upper part of the limiting section (201) and the adjusting section (202) of the upper ejector pin (2) are inserted into the first limiting groove (24), and a column spring (19) is sleeved in the adjusting section (202) in the first limiting groove (24). One end of the column spring (19) contacts the bottom of the first limiting groove (24), and the other end contacts the bottom end face of the limiting section (201) of the upper ejector pin (2). The upper end of the limiting section (201) of the upper ejector pin (2) is located outside the first upper seat (5). The top of the first upper seat (5) is provided with an upper pressure cap nut (3). The upper ejector pin (2) is threadedly connected to the upper pressure cap nut (3) so that the upper ejector pin (2) is limited by the upper pressure cap nut (3). A handle cover (1) is provided at the upper end of the limiting section (201). The adjusting section (202) and the pin section (203) of the upper pin (2) pass through the upper through hole. The pin section (203) extends into the valve body (14) of the ball pressure reducing valve to be adjusted and can contact the sealing screw (18) for adjusting the sealing screw (18).

3. The ball-type pressure reducing valve adjusting fixture as described in claim 2, characterized in that, The upper part of the ball pressure reducing valve to be adjusted is fitted with a first protective sleeve (7) inside the upper vent hole of the second upper seat (6), and the upper part of the limiting section (201) and the ejector section (203) of the upper ejector (2) is fitted with a second protective sleeve (8).

4. The ball-shaped pressure reducing valve adjusting fixture as described in claim 1, characterized in that, The pressure regulating part includes a lower ejector pin (12) and a lower pressure cap nut (26); wherein, the lower ejector pin (12) is integrally formed by a lever (121) and a rotary adjustment section (122); The top of the rotating adjustment section (122) of the lower ejector pin (12) is located in the second limiting groove (25), and the bottom of the rotating adjustment section (122) is located outside the lower seat (11). The bottom of the lower seat (11) is provided with a lower pressure cap nut (26). The lower ejector pin (12) is threadedly connected to the lower pressure cap nut (26) so as to limit the lower ejector pin (12) through the lower pressure cap nut (26); and a handle cover (1) is provided at the bottom end of the rotating adjustment section (122). The lever (121) of the lower ejector pin (12) enters the ball pressure reducing valve to be adjusted through the lower vent hole and has a gap with the valve body. It contacts the lifting valve core (13) of the ball pressure reducing valve to be adjusted and adjusts the tightening force of the lifting valve core (13) through the lower ejector pin (12).

5. The ball-type pressure reducing valve adjusting fixture as described in claim 4, characterized in that, The lower part of the ball pressure reducing valve to be adjusted is fitted with a third protective sleeve (10) inside the lower vent hole of the lower seat (11).

6. The ball-type pressure reducing valve adjusting fixture as described in claim 1, characterized in that, An upper through hole is provided at the center of the first upper seat (5) and the second upper seat (6). The first interface (21) is connected to the upper part of the upper through hole, and the bottom of the upper through hole is connected to the accommodating cavity (20). An upper sealing ring (15) is provided at the bottom of the second upper seat (6) to seal the second upper seat (6) with the top of the ball pressure reducing valve to be adjusted.

7. The ball-type pressure reducing valve adjusting fixture as described in claim 1, characterized in that, A lower vent is provided at the center of the lower seat (11), and the third interface (23) is connected to the lower vent; a second limiting groove (25) connected to the lower vent is provided at the bottom of the lower seat (11); a sealing ring (15) is provided at the top of the lower seat (11) to seal the lower seat (11) with the bottom of the ball pressure reducing valve to be adjusted.

8. The ball-shaped pressure reducing valve adjusting fixture as described in claim 2, characterized in that, The end of the ejector pin section (203) of the upper ejector pin (2) is a hexagonal wrench, which is matched with the hexagonal bolt on the top of the sealing screw (18).

9. The ball-shaped pressure reducing valve adjusting fixture as described in claim 4, characterized in that, The end of the lever (121) of the lower ejector pin (12) is a hexagonal wrench, which is matched with the hexagonal bolt at the bottom of the lifting valve core (13).

10. The ball-type pressure reducing valve adjusting fixture as described in claim 2, characterized in that, A sealing O-ring (4) is provided between the limiting section (201) of the upper ejector pin (2) and the first upper seat (5).

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