Directing device with adjusting screw stress compression structure

Abstract

The utility model relates to the technical field of gas pressure regulators, in particular to a director with an adjusting screw stress compression structure, which comprises a primary pressure regulator, a secondary director, a valve body mechanism, an adjusting mechanism and a pressure measuring mechanism. The valve body mechanism comprises a valve body shell and a valve port piece, and a valve body cavity in the first-stage pressure stabilizer is communicated with an air inlet of the second-stage director; the adjusting mechanism comprises an adjusting shell, a spring assembly and an adjusting assembly. The pressure measuring mechanism comprises a pressure measuring shell, a valve port pad, a leather film pressing block and a valve port spring, and a pressing block spring is arranged between the leather film pressing block and the pressure measuring shell; a groove is formed in one end of the adjusting screw, a steel ball rotates in the groove, and a limiting groove is formed in the abutting position of the spring assembly and the steel ball. Part of the steel balls are arranged in the groove of the adjusting screw rod, and the limiting groove is formed in the abutting position of the steel balls and the spring assembly, so that mechanical friction between the adjusting screw rod and the spring pressing plate is reduced, the clamping phenomenon caused by friction in the using process is avoided, and the reliability of the adjusting mechanism is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas pressure regulator technical field especially, it relates to a commander with adjusting screw rod stress compression structure. BACKGROUND

[0002] The commander is an important part in the gas pressure regulating system, and is widely used in gas transmission and distribution network, industrial gas supply and household gas equipment, and its main function is to realize stable output of downstream pressure by sensing the change of gas pressure and adjusting the opening and closing of the main pressure regulating valve. In the internal structure of the commander, the adjusting screw rod is used to adjust the compression amount of the spring, thereby setting the target pressure of the commander. Through the compression or relaxation of the spring, the commander can quickly respond to the fluctuation of gas pressure and maintain the pressure stability of the downstream pipe network.

[0003] In the prior art, such as the double-click adjustable commander disclosed in the Chinese utility model patent application No. CN222102863, which was published on April 30, 2024, the commander includes a main valve body, a primary commander valve, a secondary commander valve, an upstream high-pressure interface, a downstream gas pressure interface, and a fine-tuning gas pressure interface. The commander adopts a manual micro-adjusting device, has a simple structure, is low in cost, has a good effect on controlling the size of the flow passage, and can solve the problem of unbalanced force of the valve core by using flat valve ports.

[0004] However, the inventors have found in practical application that the above technical solution has the problem that the adjusting screw rod and the spring pressing plate are stuck after long-term use due to mechanical friction between the adjusting screw rod and the spring pressing plate, the spring cannot be normally stressed, the adjusting capacity of the commander is seriously affected, the valve port is not tightly closed, and even a safety hazard of gas leakage occurs. Therefore, there is an urgent need for a new adjusting screw rod stress compression structure that can effectively solve the problem of sticking of the adjusting screw rod and the spring pressing plate, ensure that the spring is always in a normal stress state, and thereby improve the long-term operation stability and reliability of the commander. UTILITY MODEL CONTENTS

[0005] In view of at least one of the above technical problems, the utility model provides a commander with an adjusting screw rod stress compression structure, which improves the compression structure to realize the stability of the commander.

[0006] According to a first aspect of the utility model, a commander with an adjusting screw rod stress compression structure is provided, which includes:

[0007] The primary pressure stabilizer and the secondary commander each include a valve body mechanism, an adjusting mechanism, and a pressure measuring mechanism.

[0008] The valve body mechanism comprises a valve body shell connected with the first pressure stabilizer and the second commander, a diaphragm assembly fixed in the valve body shell, a valve port piece fixed in the valve body chamber, and the valve port piece has an air inlet and an air outlet hole.

[0009] The adjusting mechanism comprises an adjusting shell fixedly connected with the valve body shell, a spring assembly arranged in the adjusting shell and abutting against the diaphragm assembly, and an adjusting assembly abutting against the other end of the spring assembly, and the adjusting assembly comprises an adjusting screw and an adjusting nut sleeved on the adjusting screw.

[0010] The pressure measuring mechanism comprises a pressure measuring shell connected with the valve body shell and arranged opposite to the adjusting shell, a valve port pad pressed on the air outlet hole, a diaphragm pressing block sleeved on the outer periphery of the valve port pad and pressed on the diaphragm assembly, a valve port spring between the valve port pad and the diaphragm pressing block, and a pressing block spring between the diaphragm pressing block and the pressure measuring shell.

[0011] The adjusting screw comprises an adjusting rod, a groove is formed in one end of the adjusting rod towards the spring assembly, a plurality of steel balls are rotatably connected in the groove, and a limiting groove is arranged at the abutting position of the spring assembly and the steel balls.

[0012] The first pressure stabilizer comprises a first air inlet hole connected with the air inlet and a first air outlet hole connected with a pressure gauge, and the second commander comprises a second air outlet hole and a third air outlet hole connected with the valve body chamber.

[0013] In some embodiments of the utility model, the diaphragm assembly comprises a diaphragm connecting piece, upper and lower diaphragms sleeved on two ends of the diaphragm connecting piece respectively, and a diaphragm pressing plate pressed on one end of the upper and lower diaphragms away from the diaphragm connecting piece, the upper diaphragm is fixed between the valve body shell and the pressure measuring shell, and the lower diaphragm is arranged between the valve body shell and the adjusting shell.

[0014] In some embodiments of the utility model, the diaphragm connecting piece comprises a supporting rod, diaphragm fixing plates fixed on two ends of the supporting rod, a push rod fixed on a diaphragm connecting plate towards the adjusting mechanism, a through hole formed in the center of a diaphragm connecting plate towards the pressure measuring mechanism, a hollow sliding rod arranged on the through hole, and the valve port pad is arranged in the sliding rod and can slide relatively.

[0015] In some embodiments of the utility model, a plurality of diaphragm holes are uniformly punched on the upper diaphragm in the first pressure stabilizer, and the diaphragm holes are connected with the valve body chamber and the pressure measuring mechanism.

[0016] In some embodiments of the utility model, the end face of the leather film pressing plate towards the leather film has a plurality of annular protrusions, and the plurality of annular protrusions are concentric and have different diameters.

[0017] In some embodiments of the utility model, the spring assembly comprises a first spring pressing plate abutting against the push rod, a second spring pressing plate abutting against the steel ball, and a pressure regulating spring between the first spring pressing plate and the second spring pressing plate, and the spring assembly is arranged to be relatively slidable inside the adjusting shell.

[0018] In some embodiments of the utility model, the valve port piece is fixed on the valve body shell at an end away from the air inlet, and the valve body shell further has a cover plate pressing the other end of the valve port piece.

[0019] In some embodiments of the utility model, the valve port pad in the primary pressure stabilizer is internally hollow, has a through hole in the side wall communicating with the internal hollow, the leather film pressing block has an opening at an end away from the valve body mechanism, the pressure measuring shell has a pressure reducing port communicating with the outside, and the through hole, the opening and the pressure reducing port form a communication pipeline with internal flowing gas.

[0020] In some embodiments of the utility model, the valve port pad in the secondary commander is internally sealed.

[0021] The utility model discloses beneficial effects are: the utility model discloses through setting up part steel ball in the recess of adjusting screw rod, and setting up the design of limit slot at the abutment of steel ball and spring assembly, the mechanical friction between adjusting screw rod and spring pressing plate is reduced significantly, the jamming phenomenon caused by friction in long -term use is avoided, thereby improve the reliability of adjusting mechanism. Meanwhile, the structural design of spring assembly and steel ball guarantees the uniformity of spring stress, avoids the adjusting failure caused by uneven stress, improves the operation stability and service life of commander. The improvement of adjusting mechanism makes the adjustment more accurate and sensitive, improves the precision and response speed of pressure regulation. In addition, the design that pressure measuring mechanism adopts valve port pad, leather film pressing block and corresponding spring combination guarantees the valve port leakproofness, avoids the security risk of gas leakage. The multistage pressure regulating function of primary pressure stabilizer and secondary commander is adaptable, is widely used in gas transmission and distribution pipe network, industrial gas supply and household gas equipment scene, and pressure monitoring and adjustment are convenient, and operation is efficient. The overall design effectively improves the anti -jamming performance, leakproofness and operation reliability of commander, is the major optimization and improvement to prior art. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments described in the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0023] Figure 1 The structure diagram of the commander with the adjusting screw stress compression structure in the embodiment of the present application is shown in the figure.

[0024] Figure 2 The structure diagram of the commander with the adjusting screw stress compression structure in the embodiment of the present application is shown in the figure.

[0025] Figure 3 The longitudinal sectional view of the commander with the adjusting screw stress compression structure in the embodiment of the present application is shown in the figure.

[0026] Figure 4 The transverse sectional view of the commander with the adjusting screw stress compression structure in the embodiment of the present application is shown in the figure.

[0027] Figure 5 The structure diagram of the skin film assembly and the valve port piece in the embodiment of the present application is shown in the figure.

[0028] Figure 6 The structure diagram of the skin film connecting piece in the embodiment of the present application is shown in the figure.

[0029] Figure 7 The sectional view of the pressure measuring mechanism in the embodiment of the present application is shown in the figure.

[0030] Figure 8 The structure diagram of the adjusting screw in the embodiment of the present application is shown in the figure.

[0031] Figure 9 The structure diagram of the skin film pressing plate in the embodiment of the present application is shown in the figure.

[0032] Reference signs: 01, primary pressure stabilizer; 011, first air inlet hole; 012, first air outlet hole; 02, secondary commander; 021, second air outlet hole; 022, third air outlet hole; 1, valve body mechanism; 11, valve body shell; 12, valve body chamber; 13, skin film assembly; 13a, skin film connecting piece; 13a1, support rod; 13a2, skin film fixing plate; 13a3, push rod; 13a4, through hole; 13a5, sliding rod; 13b, upper skin film; 13b1, skin hole; 13c, lower skin film; 13d, skin film pressing plate; 13d1, annular protrusion; 14, valve port piece; 14a, air inlet; 14b, air outlet hole; 2, adjusting mechanism; 21, adjusting shell; 22, spring assembly; 22a, first spring pressing plate; 22b, second spring pressing plate; 22c, pressure regulating spring; 22d, limiting groove; 23, adjusting assembly; 23a, adjusting screw; 23a1, adjusting rod; 23a2, groove; 23a3, steel ball; 23b, adjusting nut; 3, pressure measuring mechanism; 31, pressure measuring shell; 31a, pressure reducing port; 32, valve port pad; 32a, through hole; 33, valve port spring; 34, skin film pressing block; 34a, opening; 35, pressing block spring; 4, cover plate. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0034] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions as used herein are for illustrative purposes only and are not intended to be limiting.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for describing particular embodiments only and is not intended to be limiting. As used in this application, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0036] As shown in the commander with adjusting screw force compression structure, comprising: Figures 1 to 9

[0037] The primary pressure stabilizer 01 and the secondary commander 02 both include the valve body mechanism 1, the adjusting mechanism 2 and the pressure measuring mechanism 3.​

[0038] The valve body mechanism 1 comprises a valve body shell 11 connecting the first pressure stabilizer 01 and the second commander 02, a diaphragm assembly 13 fixed in the valve body shell 11, a valve body cavity 12 formed between the diaphragm assembly 13 and the valve body shell 11, a valve port 14 fixed in the valve body cavity 12, the valve port 14 having an air inlet 14a and an air outlet hole 14b, and the valve body cavity 12 in the first pressure stabilizer 01 being communicated with the air inlet 14a of the second commander 02.

[0039] The adjusting mechanism 2 comprises an adjusting shell 21 fixedly connected with the valve body shell 11, a spring assembly 22 arranged in the adjusting shell 21 and abutting against the diaphragm assembly 13, and an adjusting assembly 23 abutting against the other end of the spring assembly 22, the adjusting assembly 23 comprising an adjusting screw 23a and an adjusting nut 23b sleeved on the adjusting screw 23a.

[0040] The pressure measuring mechanism 3 comprises a pressure measuring shell 31 connected with the valve body shell 11 and arranged opposite to the adjusting shell 21, a valve port pad 32 pressing on the air outlet hole 14b, a diaphragm pressing block 34 sleeved on the outer periphery of the valve port pad 32 and pressing on the diaphragm assembly 13, a valve port spring 33 between the valve port pad 32 and the diaphragm pressing block 34, and a pressing block spring 35 between the diaphragm pressing block 34 and the pressure measuring shell 31.

[0041] The adjusting screw 23a comprises an adjusting rod 23a1, the adjusting rod 23a1 being provided with a groove 23a2 at one end thereof facing the spring assembly 22, and a part of steel balls 23a3 being rotatably connected in the groove 23a2, and the spring assembly 22 and the steel balls 23a3 being provided with a limiting groove 22d.

[0042] The first pressure stabilizer 01 comprises a first air inlet hole 011 connected with the air inlet 14a, and a first air outlet hole 14b012 connected with a pressure gauge, and the second commander 02 comprises a second air outlet hole 14b021 and a third air outlet hole 14b022 connected with the valve body cavity 12.

[0043] As Figures 1 to 4The technical scheme in the utility model is shown, and precise pressure control is realized through the step-by-step pressure regulation of the first stabilizer 01 and the second commander 02. The gas first enters the first stabilizer 01 from the gas inlet hole, is output to the second commander 02 after pressure regulation, and is further accurately regulated to ensure the stability of the downstream pressure. The skin film assembly 13 of each step perceives the pressure change in real time and drives the valve port piece 14 to regulate the air intake and exhaust, forming dynamic pressure balance. The adjusting screw 23a sets the target pressure by adjusting the compression degree of the spring assembly 22, and the steel ball 23a3 in the adjusting screw 23a and the limiting groove 22d structure reduce friction, avoiding the jamming phenomenon in long-term use, thereby improving the reliability of the adjustment. The pressure measuring mechanism 3 transmits the pressure change of the gas outlet to the skin film assembly 13 through the cooperation of the valve port pad 32, the skin film pressing block 34 and the pressing spring 35, forms closed-loop control, and ensures sensitive and stable regulation.

[0044] The utility model discloses a part of steel ball 23a3 is arranged in the recess 23a2 of the adjusting screw 23a, and the limiting groove 22d is arranged at the abutment of the steel ball 23a3 and the spring assembly 22, which significantly reduces the mechanical friction between the adjusting screw 23a and the spring pressing plate, avoids the jamming phenomenon caused by friction in long-term use, and improves the reliability of the adjusting mechanism 2. At the same time, the structural design of the spring assembly 22 and the steel ball 23a3 ensures the uniformity of the spring stress, avoids the adjustment failure caused by uneven stress, and improves the operation stability and service life of the commander. The improvement of the adjusting mechanism 2 makes the adjustment more accurate and sensitive, improves the precision and response speed of pressure regulation. In addition, the pressure measuring mechanism 3 adopts the design of valve port pad 32, skin film pressing block 34 and corresponding spring combination, which ensures the valve port sealing property and avoids the safety hazard of gas leakage. The multi-stage pressure regulation function of the first stabilizer 01 and the second commander 02 is highly adaptable, widely applicable to gas transmission and distribution pipe network, industrial gas supply and household gas equipment scenes, and convenient for pressure monitoring and adjustment, efficient operation. The overall design effectively improves the anti-sticking performance, sealing property and operation reliability of the commander, which is a major optimization and improvement of the prior art.

[0045] As Figure 5 , Figure 6As shown, the skin film assembly 13 includes a skin film connecting piece 13a, upper and lower skin films 13b and 13c respectively sleeved on both ends of the skin film connecting piece 13a, and a skin film pressing plate 13d pressed on the ends of the upper and lower skin films 13b and 13c away from the skin film connecting piece 13a. The upper skin film 13b is fixed between the valve body shell 11 and the pressure measuring shell 31, and the lower skin film 13c is arranged between the valve body shell 11 and the adjusting shell 21. The skin film assembly 13 realizes stable pressure transmission and sealing effect by arranging the skin film connecting piece 13a, the upper and lower skin films 13b and 13c, and the corresponding skin film pressing plate 13d. The upper skin film 13b is fixed between the valve body shell 11 and the pressure measuring shell 31, and the lower skin film 13c is arranged between the valve body shell 11 and the adjusting shell 21, so that the skin film assembly 13 can simultaneously sense the pressure changes of the upstream and downstream, and coordinate the dynamic response of the two through the skin film connecting piece 13a, to ensure the sensitivity and accuracy of pressure regulation. At the same time, the sealing performance is further improved through the fixed pressing effect of the skin film pressing plate 13d, to prevent gas leakage and ensure the safety and reliability of the pressure regulating device.

[0046] As shown in the figure, Figure 6 The skin film connecting piece 13a includes a support rod 13a1, skin film fixing plates 13a2 fixed on both ends of the support rod 13a1, a push rod 13a3 fixed on the skin film connecting plate towards the adjusting mechanism 2, a through hole 13a4 formed in the center of the skin film connecting plate towards the pressure measuring mechanism 3, and a hollow sliding rod 13a5 having the through hole 13a4, wherein the valve port pad 32 passes through the inside of the sliding rod 13a5 and is arranged relatively slidably. The skin film connecting piece 13a forms an efficient pressure transmission and adjusting structure by arranging the support rod 13a1, the skin film fixing plates 13a2, the push rod 13a3 and the hollow sliding rod 13a5. The skin film fixing plates 13a2 are fixed on both ends of the support rod 13a1 to ensure the stability and reliability of the whole skin film assembly 13. The push rod 13a3 is fixed on the skin film connecting plate towards the adjusting mechanism 2 to accurately push the adjusting mechanism 2 to respond to pressure changes through pressure transmission. The through hole 13a4 is arranged in the center of the skin film connecting plate, and the hollow sliding rod 13a5 in the through hole 13a4 allows the valve port pad 32 to pass through and relatively slide, so that the pressure transmission is more sensitive and efficient. The hollow design of the sliding rod 13a5 ensures the smoothness of the pressure transmission path, and the sliding function improves the flexibility of the adjustment to avoid mechanical jamming.

[0047] In order to make the gas with pressure in the primary pressure stabilizer 01 reach the set pressure value, as shown in the figure, Figure 6As shown, the upper epithelial membrane 13b in the first pressure stabilizer 01 is uniformly punched with a plurality of skin holes 13b1, and the skin holes 13b1 are connected with the valve cavity 12 and the inside of the pressure measuring mechanism 3. The design of the plurality of skin holes 13b1 uniformly distributed on the upper epithelial membrane 13b in the first pressure stabilizer 01 forms direct communication between the valve cavity 12 and the inside of the pressure measuring mechanism 3, which can more quickly and uniformly perceive pressure changes and transmit them to the pressure measuring mechanism 3, effectively avoiding the regulation lag or misalignment phenomenon caused by uneven pressure transmission, and improving the sensitivity and response speed of the pressure stabilizer. At the same time, the uniformly distributed skin holes 13b1 reduce the damage of local pressure concentration to the skin membrane, prolong the service life of the skin membrane, and further enhance the stability and reliability of the device.

[0048] As Figure 9 shown, the end surface of the skin membrane pressing plate 13d towards the skin membrane has a plurality of annular protrusions 13d1, and the plurality of annular protrusions 13d1 are concentric and have different diameters. The plurality of annular protrusions 13d1 with different diameters arranged on the end surface of the skin membrane pressing plate 13d towards the skin membrane can uniformly distribute the pressure of the pressing plate on the skin membrane, avoid local stress concentration caused by a single contact surface, reduce the risk of skin membrane deformation or damage, and the concentric design of the annular protrusions 13d1 ensures the overall support of the pressing plate on the skin membrane, improves the sealing between the skin membrane and the pressing plate, and effectively prevents gas leakage. In addition, the multi-stage structure of the annular protrusions 13d1 can also enhance the stability of the skin membrane and the sensitivity of pressure transmission, so that the pressure regulating device can maintain high efficiency and stable performance during long-term operation, prolong the service life of the skin membrane, and improve the reliability of the overall device.

[0049] In some embodiments of the present application, as Figure 3 shown, the spring assembly 22 includes a first spring pressing plate 22a abutting against the push rod 13a3, a second spring pressing plate 22b abutting against the steel ball 23a3, and a pressure regulating spring 22c between the first spring pressing plate 22a and the second spring pressing plate 22b, and the spring assembly 22 is relatively slidably arranged in the adjusting shell 21. The spring assembly 22 forms a stable and efficient pressure regulating structure by arranging the first spring pressing plate 22a, the second spring pressing plate 22b and the pressure regulating spring 22c, the first spring pressing plate 22a abutting against the push rod 13a3 can sense and transmit the pressure change of the skin membrane assembly 13 in real time, the second spring pressing plate 22b abutting against the steel ball 23a3 reduces friction through the rolling of the steel ball 23a3, making the adjustment process smoother, and the pressure regulating spring 22c between the first spring pressing plate 22a and the second spring pressing plate 22b provides a flexible pressure regulating range, which can accurately respond to the displacement of the external adjusting screw 23a, and ensure that the spring assembly 22 remains stable during the relative sliding process in the adjusting shell 21, thereby improving the adjustment accuracy and sensitivity, reducing the jamming phenomenon caused by friction, prolonging the service life of the spring assembly 22, and improving the reliability and operating efficiency of the pressure regulating device as a whole.

[0050] To improve the sealing performance of valve port 14, please refer to... Figure 2 As shown, the end of the valve port 14 furthest from the air inlet 14a is fixed to the valve body housing 11. The valve body housing 11 also has a cover plate 4 that presses down on the other end of the valve port 14. The fact that the end of the valve port 14 furthest from the air inlet 14a is fixed to the valve body housing 11, and that the other end of the valve port 14 is pressed down by the cover plate 4, stabilizes the installation position of the valve port 14, preventing displacement or loosening due to vibration or pressure fluctuations during operation. The pressing action of the cover plate 4 further enhances the sealing performance of the valve port 14, ensuring a safe and reliable gas flow path inside the valve body and preventing gas leakage or pressure regulation failure.

[0051] like Figure 7 As shown, the valve port gasket 32 ​​in the first-stage voltage regulator 01 is hollow inside, with a through hole 32a on its side wall communicating with the hollow interior. The diaphragm pressure block 34 has an opening 34a at its end away from the valve body mechanism 1. The pressure measuring shell 31 has a pressure-reducing port 31a communicating with the outside. The through hole 32a, the opening 34a, and the pressure-reducing port 31a form a connecting pipeline through which gas flows. The valve port gasket 32 ​​in the first-stage voltage regulator 01 is designed with a hollow structure inside, and a through hole 32a is provided on its side wall. Together with the opening 34a of the diaphragm pressure block 34 and the pressure-reducing port 31a of the pressure measuring shell 31, it forms a connecting pipeline, ensuring that the internal gas can flow smoothly through this pipeline. This effectively guides and evenly distributes the gas pressure, avoids local pressure accumulation, and improves the sensitivity and stability of pressure transmission. Through the connection between the pipeline and the pressure-reducing port 31a, excess pressure can be quickly released, preventing excessive pressure from damaging the device, thereby improving the safety and reliability of the voltage regulator.

[0052] Continue to refer to Figure 7 As shown, the valve port gasket 32 ​​in the secondary controller 02 is internally sealed. The valve port gasket 32 ​​in the secondary controller 02 is designed with an internal sealing structure, which can effectively block the leakage path of gas inside the valve port gasket 32, ensuring that gas flows only in the designated channel, thereby greatly improving the sealing performance of the system. This not only avoids pressure loss caused by leakage, but also ensures the stability and accuracy of downstream pressure output regulation.

[0053] In some embodiments of this invention, the diaphragm material is a mixture of nylon and hydrogenated nitrile butadiene rubber. The diaphragm, made of this mixture, combines the high strength and wear resistance of nylon with the excellent elasticity, oil resistance, and corrosion resistance of hydrogenated nitrile butadiene rubber. This allows it to maintain good sealing and flexibility over long periods under high pressure, high temperature, and complex media conditions, while also exhibiting excellent anti-aging properties, thus extending the diaphragm's service life. The application of this mixed material also improves the diaphragm's fatigue resistance and deformation recovery ability, ensuring a rapid response under frequent pressure changes and maintaining the stability and reliability of the pressure regulating system.

[0054] Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A commander having a regulating screw force compression structure, characterized by, The utility model relates to a pressure stabilizer and a secondary commander, both including valve body mechanism, adjusting mechanism and pressure measuring mechanism. The valve body mechanism includes a valve body shell connected with the primary pressure stabilizer and the secondary commander, a diaphragm assembly fixed in the valve body shell, a valve port piece fixed in the valve body shell, the diaphragm assembly and the valve body shell forming a valve cavity, the valve port piece having an air inlet and an air outlet, the valve cavity in the primary pressure stabilizer being connected with the air inlet of the secondary commander. The adjusting mechanism includes an adjusting shell fixed with the valve body shell, a spring assembly in the adjusting shell abutting against the diaphragm assembly, an adjusting assembly at the other end of the spring assembly, the adjusting assembly including an adjusting screw and an adjusting nut sleeved on the adjusting screw. The pressure measuring mechanism includes a pressure measuring shell connected with the valve body shell and arranged opposite to the adjusting shell, a valve port pad pressing on the air outlet, a diaphragm pressing block sleeved on the outer periphery of the valve port pad and pressing on the diaphragm assembly, a valve port spring between the valve port pad and the diaphragm pressing block, and a pressing block spring between the diaphragm pressing block and the pressure measuring shell. The adjusting screw includes an adjusting rod, a groove is formed in one end of the adjusting rod towards the spring assembly, and a plurality of steel balls are rotatably connected in the groove, and a limiting groove is formed at the abutting position of the spring assembly and the steel balls. The primary pressure stabilizer includes a first air inlet connected with the air inlet and a first air outlet connected with a pressure gauge, and the secondary commander includes a second air outlet and a third air outlet connected with the valve cavity. The diaphragm assembly includes a diaphragm connecting piece, upper and lower diaphragms sleeved on both ends of the diaphragm connecting piece, and a diaphragm pressing plate pressing on one end of the upper and lower diaphragms away from the diaphragm connecting piece, the upper diaphragm being fixed between the valve body shell and the pressure measuring shell, and the lower diaphragm being arranged between the valve body shell and the adjusting shell.

2. The commander with the adjusting screw force compression structure according to claim 1, characterized in that, The diaphragm connecting piece includes a support rod, diaphragm fixing plates fixed on both ends of the support rod, a push rod fixed on a diaphragm connecting plate towards the adjusting mechanism, a through hole formed in the center of a diaphragm connecting plate towards the pressure measuring mechanism, a hollow sliding rod in the through hole, and the valve port pad passing through the sliding rod and being arranged relatively slidably.

3. The commander with the adjusting screw force compression structure according to claim 2, characterized in that, A plurality of diaphragm holes are uniformly punched on the upper diaphragm in the primary pressure stabilizer, and the diaphragm holes are connected with the valve cavity and the pressure measuring mechanism.

4. The commander having the structure of adjusting screw force compression according to claim 2, wherein, The diaphragm pressing plate has a plurality of annular protrusions on the end face towards the diaphragm, and the annular protrusions are concentric and have different diameters.

5. The commander having the structure of adjusting screw force compression according to claim 2, wherein, The spring assembly includes a first spring pressing plate abutting against the push rod, a second spring pressing plate abutting against the steel balls, a pressure regulating spring between the first spring pressing plate and the second spring pressing plate, and the spring assembly being arranged relatively slidably in the adjusting shell.

6. The commander having the structure of adjusting screw force compression according to claim 3, wherein, One end of the valve port piece away from the air inlet is fixed on the valve body shell, and the valve body shell further has a cover plate pressing the other end of the valve port piece.

7. The commander having the structure of adjusting screw force compression according to claim 1, wherein, ​ 8. The commander having the structure of adjusting screw force compression according to claim 1, wherein, The valve port pad in the primary voltage stabilizer is internally hollow, and has a through hole in the side wall communicating with the internal hollow; the diaphragm pressing block has an opening away from the valve body mechanism; the pressure measuring shell has a pressure reducing port communicating with the outside; the through hole, the opening and the pressure reducing port form a communicating pipeline, and the internal gas flows through.

9. The commander having the structure of adjusting screw force compression according to claim 1, wherein, The valve port pad in the secondary commander is internally sealed.

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