Anti-torque valve fixing device

Abstract

The invention relates to an anti-torque valve fixing device. Comprising a spring, a first spring seat, a second spring seat and a cap, the valve is connected with the spring through a first spring seat, a first supporting arm groove is formed in the end face of the valve, a plurality of first supporting arms extending outwards or inwards are arranged in the circumferential direction of the first spring seat, and the spring is fixedly connected with the end face of one side of the first spring seat. The end face of the other side of the first spring seat is connected with a first supporting arm groove in the end face of the valve in an embedded fit mode through a first supporting arm. The other end of the spring is fixedly connected with the end face of one side of the second spring seat, a plurality of second supporting arms extending outwards or inwards are arranged in the circumferential direction of the second spring seat, a second supporting arm groove is formed in the end face of the side, making contact with the second spring seat, of the cap, and the second spring seat is connected with the second supporting arm groove in an embedded fit mode through the second supporting arms. And the cap is fixedly connected with the valve shell. The risk that when a traditional spring is matched with a valve, possible torque transmission under the complex working condition causes rotation friction, and consequently parts are abraded is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical hydraulics, and in particular to a torque-resistant valve fixing device. Background Art

[0002] The structure of the valve bushing and spring is a common reset function or valve position control form in the fuel control system. The existing valve and spring matching forms are mostly stopped by the spring and the valve directly or by the spring seat bearing the spring and the valve indirectly. Figure 1 shown.

[0003] One end of the spring contacts the valve, and the other end rests on the cap or other fixed plane. After the valve moves, the spring force ensures that the valve is reset or controls the valve to move to a specified position.

[0004] From the structure and working principle of the valve and spring cooperation, it can be seen that the existing cooperation form only considers the ideal axial movement of the valve parts during work, and does not involve the complex working state of the complex valve, especially the possible rotational movement of the valve in actual work on the stress state of the spring cooperating with the valve.

[0005] When a large amount of circulating fluid is involved in the operation of the valve and a large tangential hydraulic force is generated during operation, the torque acting on the valve is sufficient to cause the precision-machined smooth valve to produce rotational motion, and may further drive the spring to rotate. At this time, the spring and the mating parts at both ends of the spring have formed a friction pair, causing the mating structural parts of the spring and the valve to wear and even cause the spring to break, resulting in product contamination and the risk of spring performance degradation or failure. Summary of the invention

[0006] The purpose of the present invention is to improve the control reliability of new product models and reduce the risk of internal wear. A torque-resistant valve fixing device is proposed to ensure the original functional performance of the product valve and increase the limiting torque resistance, while having the characteristics of simple structure, high reliability and easy processing.

[0007] The technical solution of the present invention: In order to achieve the above-mentioned invention object, according to the first aspect of the present invention, a torque-resistant valve fixing device is proposed, which is applied to the combined structure of a valve and a spring, including a spring, a first spring seat, a second spring seat, and a cap; the valve is connected to the spring through the first spring seat, a first arm groove is provided on the end surface of the valve, the first spring seat has a plurality of first arms extending outward or inward in the circumferential direction, the spring is fixedly connected to one side end surface of the first spring seat, and the other side end surface of the first spring seat is embedded and matched with the first arm groove on the end surface of the valve through the first arm; the other end of the spring is fixedly connected to one side end surface of the second spring seat, the second spring seat has a plurality of second arms extending outward or inward in the circumferential direction, a second arm groove is provided on the end surface of the cap on the side in contact with the second spring seat, and the second spring seat is embedded and matched with the second arm groove through the second arm; the cap is fixedly connected to the valve housing.

[0008] By assembling the spring seats or sleeve arms at both ends of the spring correspondingly with the arm grooves of the cap and the valve, the relative angle of the valve-spring-cap is fixed. After the cap and the shell are assembled and fixed, the rotation of the spring and the valve as a whole is limited to counteract the torque generated by the rotational movement of the valve under the influence of tangential force in actual work.

[0009] The cap is used to support one end of the spring and fix the spring, and can actually be extended to an absolutely fixed fixing surface to provide a fixed reference for the entire valve fixing structure after supporting the spring; the spring seat or sleeve is fixed on both sides of the spring, and is used to provide limiting structures such as support arms to cooperate with the support arm grooves of the cap and the valve to fix the relative angles between the spring and the parts on both sides; the spring can increase its strength design according to actual conditions while maintaining its original function, and improve the working reliability of the spring under torque by increasing the spring wire diameter, elastic stiffness, etc.; the valve is used to support the other end of the spring and fix the spring, and maintains the original functional performance and improves reliability under the support of the fixed structure.

[0010] In a possible embodiment, a spring hole for supporting a spring is opened in the center of the valve, the first spring seat has a sleeve configuration extending into the spring hole and fitting with the spring hole gap, the first spring seat has a plurality of first arms extending outward in the circumference, and the first arms are embedded and fitted into the first arm grooves on the inner end surface of the spring hole in the center of the valve.

[0011] In a possible embodiment, a spring hole for supporting a spring is opened in the center of the valve, a valve boss is arranged in the center of the center hole of the spring hole, the first spring seat passes through the valve boss and is arranged in the spring hole, a first arm groove is opened on the upper end surface of the valve boss, and the first spring seat has a plurality of first arms extending inward in the circumference, and the first arms are embedded and matched with the first arm grooves on the upper end surface of the valve boss.

[0012] In a possible embodiment, the spring is processed by a spring steel wire winding process.

[0013] In a possible embodiment, the spring is made of 1Cr18Ni9 material.

[0014] According to a second aspect of the present invention, a torque-resistant valve fixing device is proposed, which is applied to a combined structure of a valve and a spring in a valve housing, including a mechanical spring and a cap machined from a steel bar; the two ends of the mechanical spring are circumferentially provided with a plurality of first arms and second arms extending outward or inward respectively; a first arm groove is provided on the end surface of the valve, and one end of the mechanical spring is embedded and connected with the first arm groove through the first arm; a second arm groove is provided on the end surface of the cap on the side in contact with the mechanical spring, and the other end of the mechanical spring is connected with the second arm groove through the second arm.

[0015] The processing method of the spring (0Cr14Ni5Mo2Cu2Nb) is changed from the traditional spring wire winding to mechanical processing of steel rods, which greatly improves the strength of the spring and processes the support arm on the spring itself to integrate the functions of the spring seat and the sleeve. The cap (0Cr17Ni4Cu4Nb) and the valve (9Cr18) that support the spring assembly are also processed with support arm grooves to match the support arm structure of the spring for fixed assembly.

[0016] In a possible embodiment, the machined spring is made of 0Cr14Ni5Mo2Cu2Nb.

[0017] The cap (0Cr17Ni4Cu4Nb) of the bearing spring assembly and the valve are processed with arm grooves to match the arm structure of the spring assembly, which reduces the difficulty of assembly without affecting the original structural function and achieves the purpose of anti-rotation.

[0018] In a possible embodiment, a magnetic assembly is further included, and the magnetic assembly includes a magnetic element and a magnetic switch; a magnetic element is installed on one side of the valve, and a magnetic switch is fixedly installed on the housing at a fixed angle and fixed distance relative to the initial position of the valve. When the valve is in the initial position, the magnetic switch is directly facing the magnetic element on the valve, and the distance is short. The magnetic switch senses the magnetism of the magnetic element and indicates that the power is on; when the valve is displaced, the magnetic element moves away from the magnetic switch as the valve moves away from the magnetic switch, and the distance increases. The magnetic switch senses the weakening of the magnetism of the magnetic element and indicates that the power is off. The valve position signal can be monitored in real time through the feedback of the magnetic switch.

[0019] Traditional valves have the risk of twisting, and the magnetic switch assembly cannot accurately identify the actual position of the valve. When the fixing device of the present invention is adopted, the risk of valve twisting is eliminated, and the valve position can be well identified by setting the magnetic switch assembly.

[0020] Beneficial effects of the present invention

[0021] Through the present invention, a matching structure between a complex valve and its contact parts (such as springs) is improved and supplemented. While not affecting the control performance of the valve itself, the present invention optimizes the movement form of the valve in actual work, significantly improves the working reliability and environmental adaptability of the product, and provides a risk identification and improvement reference for the design of other complex valve structures, especially valve structures with large flow fluid circulation during work. It has significant promotion and application value and is of great significance to the application and development of aviation and aerospace products. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. It is obvious that the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic diagram of the existing valve and spring assembly form

[0024] Figure 2 is a schematic structural diagram of Embodiment 1 of the present invention;

[0025] Figure 3 is a schematic diagram of the end face side of the valve in Embodiment 1 of the present invention;

[0026] Figure 4 is a schematic diagram of the cap side in Example 1 of the present invention;

[0027] Figure 5 is a schematic structural diagram of Embodiment 2 of the present invention;

[0028] Figure 6 is a schematic diagram of the end face side of the valve in Example 2 of the present invention;

[0029] Figure 7 is a schematic diagram of the cap side in Example 2 of the present invention;

[0030] Figure 8 It is a schematic structural diagram of a mechanical spring fixing device machined from a steel bar in Example 3 of the present invention;

[0031] Fig. 9 is a schematic diagram of a mechanical spring machined from a steel bar in Example 3 of the present invention;

[0032] Fig.10 It is a schematic diagram of the structure of embodiment 4 of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] The features and illustrative embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is by no means limited to any specific settings and methods proposed below, but covers any improvements, replacements and modifications of structures, methods, devices without departing from the spirit of the present invention. In the accompanying drawings and the following description, known structures and technologies are not shown to avoid unnecessary ambiguity in the present invention.

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other, and the embodiments can refer to and quote each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] Example 1

[0037] A torque-resistant valve fixing device is applied to a combined structure of a valve 5 and a spring, comprising a spring 3, a first spring seat 4, a second spring seat 2, and a cap 1; the valve is connected to the spring through the first spring seat, a first arm groove is provided on the end surface of the valve, the first spring seat has a plurality of first arms extending outward or inward in the circumferential direction, the spring is fixedly connected to one end surface of the first spring seat on one side, and the other end surface of the first spring seat is embedded and matched with the first arm groove on the end surface of the valve through the first arm; the other end of the spring is fixedly connected to one end surface of the second spring seat on one side, the second spring seat has a plurality of second arms extending outward or inward in the circumferential direction, a second arm groove is provided on the end surface of the cap on the side in contact with the second spring seat, and the second spring seat is embedded and matched with the second arm groove through the second arm; the cap is fixedly connected to the valve housing.

[0038] like Figure 1-Figure 4As shown, a spring hole for supporting a spring is provided at the center of the valve, the first spring seat has a sleeve configuration extending into the spring hole and matching with the spring hole gap, the first spring seat has a plurality of first arms extending outward in the circumference, and the first arms are connected with the first arm grooves on the end surface around the spring hole in the center of the valve through the first arms.

[0039] Example 2

[0040] A torque-resistant valve fixing device is applied to a combined structure of a valve 5 and a spring, comprising a spring 3, a first spring seat 4, a second spring seat 2, and a cap 1; the valve is connected to the spring through the first spring seat, a first arm groove is provided on the end surface of the valve, the first spring seat has a plurality of first arms extending outward or inward in the circumferential direction, the spring is fixedly connected to one end surface of the first spring seat on one side, and the other end surface of the first spring seat is embedded and matched with the first arm groove on the end surface of the valve through the first arm; the other end of the spring is fixedly connected to one end surface of the second spring seat on one side, the second spring seat has a plurality of second arms extending outward or inward in the circumferential direction, a second arm groove is provided on the end surface of the cap on the side in contact with the second spring seat, and the second spring seat is embedded and matched with the second arm groove through the second arm; the cap is fixedly connected to the valve housing.

[0041] like Figure 5-Figure 7 As shown, a spring hole for bearing spring is provided in the center of the valve, a valve boss is provided in the center of the spring hole center hole, the first spring seat passes through the valve boss and is provided in the spring hole, a first arm slot is provided on the upper end surface of the valve boss, the first spring seat has a plurality of first arms extending inward in the circumferential direction, and the first arms are connected with the first arm slots on the upper end surface of the valve boss. The cap and valve assembled with the bearing spring assembly are machined with arm slots on the original bosses to match the arm structure of the spring assembly, which reduces the assembly difficulty without affecting the original structural function and achieves the purpose of anti-rotation.

[0042] Embodiment 2 of the present invention adds spring seats (GH2132) at both ends and welds them to the spring (GH2132), and an inwardly extending support arm is processed on the spring seat. The welded spring assembly not only retains the spring's own performance and good oil flow capacity, but also has the function of fixing the spring and its mating parts relatively to resist torque.

[0043] Example 3

[0044] like Figure 8As shown, a torque-resistant valve fixing device is applied to the combined structure of the valve and spring in the valve housing, including a mechanical spring and a cap machined from a steel bar; the two ends of the mechanical spring are circumferentially provided with a plurality of first arms and second arms extending outward or inward respectively; a first arm groove is provided on the end surface of the valve, and one end of the mechanical spring is connected to the first arm groove through the first arm; a second arm groove is provided on the end surface of the cap on the side in contact with the mechanical spring, and the other end of the mechanical spring is connected to the second arm groove through the second arm.

[0045] like Fig. 9 As shown, the processing method of the spring (0Cr14Ni5Mo2Cu2Nb) is changed from the traditional spring wire winding to the steel rod machining, which greatly improves the spring strength and processes the support arm on the spring itself to integrate the functions of the spring seat and the sleeve, such as Figure 5 The cap (0Cr17Ni4Cu4Nb) and valve (9Cr18) of the spring assembly are also as shown. Figure 4 A support arm groove is processed to match the support arm structure of the spring for fixed assembly.

[0046] Example 4

[0047] Embodiment 4 is based on Embodiments 1, 2, and 3, and further includes a magnetic component, such as Fig.10 As shown, the magnetic assembly includes a magnetic element 7 and a magnetic switch 8; a magnetic element 7 is installed on one side of the valve, and a magnetic switch 8 is fixedly mounted on the housing at a fixed angle and fixed distance relative to the initial position of the valve 5. When the valve 5 is in the initial position, the magnetic switch 8 is directly facing the magnetic element 7 on the valve, and the distance is short. The magnetic switch 8 senses the magnetism of the magnetic element 7 and indicates that the power is on; when the valve 5 is displaced, the magnetic element 7 moves away from the magnetic switch as the valve 5 moves away from the magnetic switch, and the distance increases. The magnetic switch 8 senses the weakening of the magnetism of the magnetic element 7 and indicates that the power is off. The valve position signal can be monitored in real time through the feedback of the magnetic switch 8.

[0048] The traditional valve has the risk of twisting, and the magnetic switch assembly cannot accurately identify the actual position of the valve. When the fixing device of the present invention is used, the risk of valve twisting is eliminated, and the valve position can be well identified by setting the magnetic switch assembly. After resisting the valve torque and fixing the relative angle between the spring and the valve, the fixing structure of Example 4 can provide the possibility of expanding the function of the valve itself, and can be used for the valve such as Figure 6 As shown in the figure, after further processing of the slotted magnetic element and installing a magnetic switch outside the valve, the magnetic switch can be turned on and off by changing the distance between the magnetic element and the switch through the fixed axial movement of the magnetic element bound to the valve, thereby associating the switching signal with the movement position of the valve, expanding the original function of the valve with a new function of monitoring the specific position of the valve in actual work.

[0049] Through the above improved design, while greatly improving product reliability, it does not affect the original function and does not require redesigning the valve or expanding the valve hole system. It solves the risk of parts wear caused by rotational friction due to possible torque transmission when traditional springs and valves are combined under complex working conditions, and provides possible space for product expansion functions.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention.

Claims

1. A torque-resistant valve fixing device, characterized in that: The combined structure applied to a valve and a spring comprises a spring, a first spring seat, a second spring seat and a cap; the valve is connected to the spring through the first spring seat, a first arm groove is provided on an end surface of the valve, the first spring seat has a plurality of first arms extending outward or inward in a circumferential direction, the spring is fixedly connected to one end surface of the first spring seat on one side, and the end surface of the other side of the first spring seat is embedded and matched with the first arm groove on the end surface of the valve through the first arm; the other end of the spring is fixedly connected to one end surface of the second spring seat on one side, the second spring seat has a plurality of second arms extending outward or inward in a circumferential direction, a second arm groove is provided on an end surface of the cap contacting with the second spring seat, and the second spring seat is embedded and matched with the second arm groove through the second arm; the cap is fixedly connected to a valve housing.

2. A torque-resistant valve fixing device according to claim 1, characterized in that: A spring hole for supporting a spring is provided at the center of the valve, and the first spring seat has a sleeve configuration extending into the spring hole and fitting with the spring hole gap. The first spring seat has a plurality of first arms extending outward in the circumference, and the first arms are embedded and fitted in the first arm grooves on the inner end surface of the spring hole at the center of the valve.

3. The anti-torque valve fixing device according to claim 1, characterized in that: A spring hole for supporting a spring is provided at the center of the valve, a valve boss is provided at the center of the center hole of the spring hole, the first spring seat passes through the valve boss and is provided in the spring hole, a first arm groove is provided on the upper end surface of the valve boss, the first spring seat has a plurality of first arms extending inward in the circumference, and the first arms are embedded and matched with the first arm grooves on the upper end surface of the valve boss.

4. A torque-resistant valve fixing device according to any one of claims 1 to 3, characterized in that: The spring is processed by a spring steel wire winding process.

5. A torque-resistant valve fixing device according to any one of claims 1 to 3, characterized in that: The spring is made of 1Cr18Ni9 material.

6. A torque-resistant valve fixing device, characterized in that: A combined structure of a valve and a spring used in a valve housing comprises a mechanical spring and a cap machined from a steel bar; the two ends of the mechanical spring are circumferentially provided with a plurality of first arms and second arms extending outward or inward respectively; a first arm groove is provided on the end surface of the valve, and one end of the mechanical spring is embedded and connected with the first arm groove through the first arm; a second arm groove is provided on the end surface of the cap on the side in contact with the mechanical spring, and the other end of the mechanical spring is connected with the second arm groove through the second arm.

7. The anti-torque valve fixing device according to claim 6, characterized in that: The machined spring is made of 0Cr14Ni5Mo2Cu2Nb material.

8. A torque-resistant valve fixing device according to any one of claims 1 to 7, characterized in that: It also includes a magnetic component, which includes a magnetic element and a magnetic switch; a magnetic element is installed on one side of the valve, and a magnetic switch is fixedly installed on the housing at a fixed angle and fixed distance relative to the initial position of the valve. When the valve is in the initial position, the magnetic switch is directly facing the magnetic element on the valve, and the distance is short. The magnetic switch senses the magnetism of the magnetic element and displays power on; when the valve is displaced, the magnetic element moves away from the magnetic switch as the valve moves away from the magnetic switch, and the distance increases. The magnetic switch senses the weakening of the magnetism of the magnetic element and displays power off. The valve position signal can be monitored in real time through the feedback of the magnetic switch.

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