Pressure reducing valve assembly tool

Abstract

The utility model discloses a pressure reducing valve assembly tool, relates to the technical field of pressure reducing valve assembly, and aims to solve the problem of inconsistent installation height of a handle when an existing pressure reducing valve is assembled. The pressure reducing valve assembly tool comprises a barrel, a first limiting assembly and a second limiting assembly, a first through hole is formed in the side wall of the barrel, and the barrel is used for containing a pressure reducing valve; the first limiting assembly is movably connected with the cylinder through the first through hole, one end of the first limiting assembly is located in the cylinder, and the first limiting assembly moves in the direction close to or away from the axis of the cylinder so as to limit the handle to be close to a valve body of the pressure reducing valve along the axis of the cylinder; the second limiting assembly is arranged on the barrel and provided with a limiting part moving in the axial direction of the barrel, and the limiting part is used for being connected with the valve needle in a clamped mode and limiting the valve needle in the circumferential direction.

Description

Technical Field

[0001] This utility model relates to the field of pressure reducing valve assembly technology, specifically to a pressure reducing valve assembly fixture. Background Technology

[0002] When adjusting the pressure reduction level of a semiconductor-grade pressure reducing valve, the valve needle needs to be rotated to adjust the spring clamping force, thereby regulating the pressure reduction level and the output gas pressure. When installing the handle, a flathead screwdriver is first used to secure the valve needle, ensuring it does not rotate during installation. Next, the threaded hole of the handle is aligned with the external thread of the valve needle and gradually screwed in, continuing to rotate until the handle is in the correct position. Then, the threaded hole of the nut is aligned with the part of the valve needle where the handle is installed, and the nut is rotated, gradually screwing it in along the valve needle thread until the nut firmly engages the handle. However, due to the instability of manual operation, different operators may apply inconsistent force and angles during installation, resulting in variations in the installation position of each handle. This leads to differences in the factory height of each handle, causing inconvenience in subsequent use and maintenance, and affecting product quality and reliability. Furthermore, maintaining a fixed valve needle throughout the installation process is difficult for a single person to accomplish, requiring both the valve needle and handle to remain stationary while simultaneously rotating the nut, wasting manpower and resources. Utility Model Content

[0003] The purpose of this utility model is to provide a pressure reducing valve assembly fixture to solve the problems that currently, during the assembly of pressure reducing valves, it is difficult for a single person to keep the valve needle and handle from rotating while allowing the nut to rotate, and the handle height is inconsistent after assembly, which affects the assembly efficiency and quality of the product.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A pressure reducing valve assembly fixture, comprising:

[0006] The cylinder has a first through hole on its side wall, and the cylinder is used to accommodate the pressure reducing valve.

[0007] The first limiting component is movably connected to the cylinder through the first through hole. One end of the first limiting component is located inside the cylinder. The first limiting component moves along the axis close to or away from the cylinder to limit the handle from approaching the valve body of the pressure reducing valve along the axis of the cylinder.

[0008] The second limiting component is disposed on the cylinder and has a limiting part that moves along the axial direction of the cylinder. The limiting part is used to engage the valve needle and limit the valve needle circumferentially.

[0009] Compared with the prior art, the pressure reducing valve assembly fixture provided by this utility model, when assembling the pressure reducing valve, firstly fixes the valve body to the frame, and then fits the cylinder around the valve body and fixes it to the frame, ensuring the relative position stability of each component during assembly; after the cylinder is fitted over the valve body, adjusts the position of the first limiting component so that it moves through the first through hole towards the valve body, moving to a position that prevents the handle from moving axially towards the valve body; then, when the handle needs to be installed, the limiting part of the second limiting component moves axially along the cylinder, engaging the valve needle and circumferentially limiting the valve needle, thus ensuring that the valve needle will not rotate during the installation of the handle, and ensuring the stability of the handle and valve needle. The threaded connection can be smoothly performed; finally, after the first and second limiting components respectively limit the axial position of the handle and the circumferential position of the valve needle, the threads of the handle and the valve needle are aligned, and then the handle is rotated so that its threads are screwed into the valve needle. Since the axial position of the handle is limited by the first limiting component and the circumferential position of the valve needle is limited by the second limiting component, the valve needle is prevented from rotating during the assembly process, which can facilitate the assembly operation and improve the assembly efficiency; since the axial position of the handle is limited by the first limiting component, the handle can be accurately installed in the predetermined position, thereby solving the problem of inconsistent handle height, enhancing the assembly quality, and increasing the reliability of the product.

[0010] Optionally, in the above-mentioned pressure reducing valve assembly fixture, the first limiting component includes: a limiting pin, which is slidably connected to the cylinder through a first through hole. One end of the limiting pin is located inside the cylinder. The first limiting component moves along the axis of the cylinder to restrict the handle from approaching the valve body of the pressure reducing valve along the axial direction of the cylinder. A first annular protrusion is provided around the outer wall of the limiting pin in the circumferential direction. The first annular protrusion is located outside the cylinder, and the diameter of the first annular protrusion is larger than the inner diameter of the first through hole.

[0011] Optionally, in the above-mentioned pressure reducing valve assembly fixture, the first limiting component further includes:

[0012] The first sleeve has an open end face and a second through hole on the other end face. The first sleeve is sleeved on the outside of the limiting pin. The open end of the first sleeve is fixedly connected to the outer wall of the cylinder body, and the second through hole and the first through hole are located on the same straight line with the same diameter of the cylinder body.

[0013] The first elastic element is disposed inside the first sleeve, with its two ends respectively abutting against the first annular protrusion and the end face of the first sleeve. The first elastic element is used to apply an elastic force close to the pressure reducing valve to the limiting pin.

[0014] Optionally, in the above-mentioned pressure reducing valve assembly fixture, the first through hole is a threaded hole, the first limiting component is a threaded part, the threaded part is threadedly connected to the threaded hole, and the threaded part moves radially along the cylinder to restrict the handle from approaching the valve body of the pressure reducing valve axially along the cylinder.

[0015] Optionally, in the above-mentioned pressure reducing valve assembly fixture, the second limiting component includes:

[0016] The guide rod is fixedly connected to the cylinder, and the length of the guide rod is parallel to the axial direction of the cylinder.

[0017] The pressure rod has a through hole, and the pressure rod is slidably connected to the guide rod through the through hole;

[0018] The screwdriver has its tail fixedly connected to the pressure rod, and its tip is used to contact the valve needle and provide circumferential positioning.

[0019] Optionally, in the above-mentioned pressure reducing valve assembly fixture, a second annular protrusion is provided around the outer wall of the guide rod in the circumferential direction, and the second limiting component further includes:

[0020] The second sleeve is fitted around the outside of the guide rod and is fixedly connected to the pressure rod. The inner diameter of the second sleeve is larger than the diameter of the second annular protrusion.

[0021] The second elastic element is disposed inside the second sleeve. The second elastic element abuts against the second annular protrusion and the pressure rod respectively. The second elastic element is used to apply an elastic force close to the cylinder to the pressure rod.

[0022] Optionally, in the above-mentioned pressure reducing valve assembly fixture, an annular positioning part is provided around the outer wall of the guide rod in the circumferential direction. The diameter of the annular positioning part is larger than the diameter of the through hole. The annular positioning part is used to limit the axial position of the pressure rod on the guide rod.

[0023] Optionally, in the above-mentioned pressure reducing valve assembly fixture, a clearance groove is provided at the end of the cylinder away from the second limiting component. The clearance groove is used to allow the cylinder to avoid the connector of the valve body.

[0024] Optionally, in the above-mentioned pressure reducing valve assembly fixture, the pressure reducing valve assembly fixture also includes a ratchet wrench, which is used to apply torque to the locking nut to lock the handle, and the side wall of the cylinder is provided with an arc-shaped through hole, which is used to avoid the ratchet wrench.

[0025] Optionally, in the above-mentioned pressure reducing valve assembly fixture, there are two first through holes, and the two first through holes are located on the same diameter of the cylinder. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0027] Figure 1 This is a front sectional view of a pressure reducing valve assembly fixture during assembly, as proposed in this embodiment of the utility model.

[0028] Figure 2 This is a sectional perspective view of a pressure reducing valve assembly tooling according to an embodiment of the present utility model during assembly.

[0029] Figure 3 This is a side sectional view of a pressure reducing valve assembly tooling during assembly, as proposed in this embodiment of the utility model.

[0030] Figure 4 This is a top view of a pressure reducing valve assembly fixture proposed in this embodiment of the invention during assembly.

[0031] Reference numerals in the attached drawings: 1 is the cylinder body, 110 is the first through hole, 120 is the clearance groove, 130 is the arc-shaped through hole, 2 is the first limiting component, 210 is the limiting pin, 211 is the first annular protrusion, 220 is the first sleeve, 221 is the second through hole, 230 is the first elastic element, 3 is the second limiting component, 310 is the guide rod, 311 is the second annular protrusion, 312 is the annular positioning part, 320 is the pressure rod, 321 is the through hole, 330 is the screwdriver, 340 is the second sleeve, 350 is the second elastic element, 4 is the ratchet wrench, 5 is the valve body, 6 is the handle, 7 is the valve needle, 8 is the lock nut, and 9 is the connector. Detailed Implementation

[0032] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Please see Figure 1 The pressure reducing valve sealing structure provided in this embodiment includes: a cylinder 1, a first limiting component 2, and a second limiting component 3. The cylinder 1 has a first through hole 110 on its side wall and is used to accommodate the pressure reducing valve. The first limiting component 2 is movably connected to the cylinder 1 through the first through hole 110. One end of the first limiting component 2 is located inside the cylinder 1. The first limiting component 2 moves along the direction close to or away from the axis of the cylinder 1 to limit the handle 6 from approaching the valve body 5 of the pressure reducing valve along the axial direction of the cylinder 1. The second limiting component 3 is disposed on the cylinder 1 and has a limiting part that moves along the axial direction of the cylinder 1. The limiting part is used to engage the valve needle 7 and limit the valve needle 7 circumferentially.

[0038] For specific implementation details, please refer to: Figure 1 First, fix the pressure reducing valve body 5 to the frame. Then, sleeve the cylinder 1 around the valve body 5 and fix it to the frame, ensuring the relative positions of all components are stable during assembly. After the cylinder 1 is sleeved around the valve body 5, adjust the position of the first limiting component 2 so that it moves through the first through hole 110 towards the valve body 5, moving to a position that prevents the handle 6 from moving axially towards the valve body 5. Please refer to [link to relevant documentation]. Figure 2 Then, when the handle 6 needs to be installed, the limiting part of the second limiting component 3 moves along the axial direction of the cylinder 1, engages the valve needle 7, and circumferentially limits the valve needle 7. This ensures that the valve needle 7 will not rotate during the installation of the handle 6, and ensures that the threaded connection between the handle 6 and the valve needle 7 can be smoothly performed. Finally, after the first limiting component 2 and the second limiting component 3 respectively limit the axial direction of the handle 6 and the circumferential direction of the valve needle 7, the threads of the handle 6 and the valve needle 7 are aligned. Then, the handle 6 is rotated so that its threads are screwed into the valve needle 7. Since the axial position of the handle 6 is limited by the first limiting component 2 and the circumferential position of the valve needle 7 is limited by the second limiting component 3, the valve needle 7 is prevented from rotating during the assembly process, which can facilitate the assembly operation and improve efficiency. Since the axial position of the handle 6 is limited by the first limiting component 2, the handle 6 can be accurately installed in the predetermined position, thereby solving the problem of inconsistent height of the handle 6, enhancing the assembly quality, and increasing the reliability of the product.

[0039] As one possible implementation, please refer to Figure 1 and Figure 2 The first limiting component 2 includes a limiting pin 210, which is slidably connected to the cylinder 1 through the first through hole 110. One end of the limiting pin 210 is located inside the cylinder 1. The first limiting component 2 moves in a direction close to or away from the axis of the cylinder 1 to limit the handle 6 from approaching the valve body 5 of the pressure reducing valve along the axis of the cylinder 1. A first annular protrusion 211 is provided around the outer wall of the limiting pin 210 in the circumferential direction. The first annular protrusion 211 is located outside the cylinder 1, and the diameter of the first annular protrusion 211 is larger than the inner diameter of the first through hole 110.

[0040] In practical implementation: During the assembly of the pressure reducing valve, the limit pin 210 can be used to quickly position the handle 6. The operator can simply slide the limit pin 210 to limit the handle 6 without complicated adjustment and fixing operations, saving assembly time and improving work efficiency. Moreover, the limit pin 210 has a relatively simple structure, consisting of a rod with a first annular protrusion 211. This simple structure makes the manufacturing process easier and reduces production costs.

[0041] As one possible implementation, please refer to Figure 1 and Figure 2The first limiting component 2 further includes a first sleeve 220 and a first elastic element 230. One end face of the first sleeve 220 is open, and the other end face is provided with a second through hole 221. The first sleeve 220 is sleeved on the outside of the limiting pin 210. The open end of the first sleeve 220 is fixedly connected to the outer wall of the cylinder 1, and the second through hole 221 and the first through hole 110 are located on the same straight line with the same diameter of the cylinder 1. The first elastic element 230 is disposed inside the first sleeve 220, and its two ends abut against the first annular protrusion 211 and the end face of the first sleeve 220, respectively. The first elastic element 230 is used to apply an elastic force close to the pressure reducing valve to the limiting pin 210.

[0042] During installation, firstly, one end of the first sleeve 220, which contains the first elastic element 230, is fixedly connected to the outer wall of the cylinder 1, ensuring that the second through hole 221 of the first sleeve 220 and the first through hole 110 of the side wall of the cylinder 1 are on the same straight line. This installation position is to ensure that the limiting pin 210 can slide inside the first sleeve 220 and the cylinder 1, thereby hindering the axial movement of the handle 6. Then, the limiting pin 210 with the first annular protrusion 211 is inserted into the first sleeve 220. Since the diameter of the first annular protrusion 211 is larger than the inner diameter of the second through hole 221, the limiting pin 210 will not accidentally come out of the first sleeve 220 when it slides along the first sleeve 220 after installation. At the same time, it also ensures that the limiting pin 210 can slide smoothly inside the first sleeve 220 so that it can flexibly respond to the force of the first elastic element 230 in subsequent use. The beneficial effects of this design are as follows: When installing the handle 6, since the limiting pin 210 extends through the first through hole 110 and approaches the valve body 5, the handle 6 can be screwed until it contacts the limiting pin 210, so that the axial position of the handle 6 is accurately limited, avoiding the handle 6 from getting too close to the valve body 5 due to the uncertainty of manual operation, thus ensuring that the height of each handle 6 is consistent after installation and solving the problem of inconsistent handle height; at the same time, the combined design of the first sleeve 220, the limiting pin 210 and the first elastic element 230 makes the first limiting component 2 have high stability and reliability when performing its function. The first sleeve 220 provides a stable installation base and sliding channel for the limiting pin 210, and the cooperation of the first annular protrusion 211 and the second through hole 221 prevents the limiting pin 210 from accidentally coming out. The first elastic element 230 continuously applies a force close to the valve body 5 to the limit pin 210, ensuring that the limit pin 210 always maintains an effective obstruction effect on the handle 6 during operation, and can stably perform the limiting function even under certain external force interference.

[0043] Furthermore, the beneficial effects of the limiting pin 210 go beyond this. Since the valve needle 7 and the handle 6 are connected by threads, their positional relationship influences each other. During installation, if the movement of the handle 6 is not restricted, it may be over-screwed or over-screwed. If the handle 6 is over-screwed, it will exert excessive axial pressure on the valve needle 7, potentially causing the valve needle 7 to shift and affecting the normal operation of the pressure reducing valve. If the handle 6 is unscrewed, the threaded connection may become loose, similarly affecting the normal use of the pressure reducing valve. Therefore, the limiting pin 210 effectively solves this problem. The limiting pin 210 is inserted into the valve body 5 through the first through hole on the cylinder 1. Its main function is to limit the height of the handle 6, that is, to restrict the axial movement of the handle 6 in the direction close to the valve body 5. When the limiting pin 210 contacts the handle 6, it prevents the handle 6 from moving excessively, thereby indirectly controlling the axial force applied by the handle 6 to the valve needle 7 through the threads and the relative displacement between the two. In this way, although the limiting pin 210 seems to only affect the handle 6, it actually stabilizes the threaded connection between the handle 6 and the valve needle 7 by restricting the movement of the handle 6, thereby indirectly ensuring the positional stability of the valve needle 7 during installation, thus providing an important guarantee for the correct assembly of the pressure reducing valve.

[0044] In some other embodiments, the first through hole 110 is a threaded hole, the first limiting component 2 is a threaded part, the threaded part is threadedly connected to the threaded hole, and the threaded part moves radially along the cylinder 1 to limit the handle 6 from approaching the valve body 5 of the pressure reducing valve along the axial direction of the cylinder 1.

[0045] The advantages of this design are: precise adjustment of the limiting position can be achieved through a threaded connection. The operator can rotate the threaded component to gradually move it to the appropriate position radially along the cylinder 1, thereby precisely limiting the handle 6 from approaching the valve body 5 axially along the cylinder 1. Furthermore, the threaded connection offers high connection strength and stability. When the threaded component is adjusted to the appropriate position, it is firmly fixed in the threaded hole and will not easily loosen or shift. This ensures that the handle 6 is reliably limited throughout the assembly process, guaranteeing stability during assembly.

[0046] As one possible implementation, please refer to Figure 1 and Figure 2 The second limiting component 3 includes a guide rod 310, a pressure rod 320, and a screwdriver 330. The guide rod 310 is fixedly connected to the cylinder 1, and the length direction of the guide rod 310 is parallel to the axial direction of the cylinder 1. The pressure rod 320 has a through hole 321, and the pressure rod 320 is slidably connected to the guide rod 310 through the through hole 321. The tail of the screwdriver 330 is fixedly connected to the pressure rod 320, and the tip of the screwdriver 330 is used to contact the valve needle 7 and circumferentially limit it.

[0047] For detailed installation instructions, please refer to [link / reference]. Figure 1 and Figure 2 The guide rod 310 is fixedly connected to the cylinder 1, ensuring that the length of the guide rod 310 is parallel to the axial direction of the cylinder 1. It is worth noting that welding, bolting, or other methods can be used for fixing to ensure the connection's firmness and stability. Next, the pressure rod 320 is fitted onto the guide rod 310 through the through hole 321, achieving a sliding connection between the pressure rod 320 and the guide rod 310. Then, the tip of the screwdriver 330 is aligned with the valve needle 7, and the tail of the screwdriver 330 is fixedly connected to the pressure rod 320. Welding or other reliable connection methods can be used to ensure a firm connection between the screwdriver 330 and the pressure rod 320, preventing loosening or detachment during use.

[0048] The beneficial effects of this design are as follows: the screwdriver 330 in the second limiting component 3 can move axially along the cylinder 1, contacting the valve needle 7 and axially limiting it, ensuring that the valve needle 7 will not rotate during the installation of the handle 6. This makes the subsequent threaded connection between the handle 6 and the valve needle 7 more accurate and stable, helping to improve assembly precision and quality. Simultaneously, the pressure rod 320, to which the screwdriver 330 is fixed, is slidably connected to the guide rod 310 through the through hole 321. The pressure rod 320 can move axially along the cylinder 1, allowing the screwdriver 330 to contact the valve needle 7. In summary, the precise limiting and flexible adjustment functions of the second limiting component 3 greatly improve the assembly efficiency of the pressure reducing valve, reduce rework due to assembly errors caused by the rotation of the valve needle 7, and save manpower and time costs.

[0049] Further, please refer to Figure 1 and Figure 2 A second annular protrusion 311 is provided around the outer wall of the guide rod 310 in the circumferential direction. The second limiting component 3 also includes:

[0050] The second sleeve 340 is sleeved on the outside of the guide rod 310 and fixedly connected to the pressure rod 320. The inner diameter of the second sleeve 340 is larger than the diameter of the second annular protrusion 311.

[0051] The second elastic element 350 is disposed inside the second sleeve 340. The second elastic element 350 abuts against the second annular protrusion 311 and the pressure rod 320 respectively. The second elastic element 350 is used to apply an elastic force close to the cylinder 1 to the pressure rod 320.

[0052] In practice, after the guide rod 310 is fixedly installed, ensure that the second annular protrusion 311 on the guide rod 310 is in a suitable position to provide a limiting function for the subsequent installation of the second elastic element 350. Then, the second sleeve 340, which has the second elastic element 350 inside, is sleeved on the outside of the guide rod 310 and fixedly connected to the pressure rod 320, so that one end of the second elastic element 350 abuts against the second annular protrusion 311 and the other end abuts against the pressure rod 320, ensuring that the installation position of the second elastic element 350 is accurate and can provide the pressure rod 320 with an elastic force close to the cylinder 1.

[0053] A further beneficial effect of this configuration is that the second elastic element 350 located inside the second sleeve 340 can apply an elastic force close to the cylinder 1 to the pressure rod 320. This elastic force can ensure that the screwdriver 330 is always in close contact with the valve needle 7, and can maintain the circumferential limiting effect on the valve needle 7 even under certain external force interference.

[0054] Further, please refer to Figure 1 and Figure 2 An annular positioning part 312 is provided around the outer wall of the guide rod 310. The diameter of the annular positioning part 312 is larger than the diameter of the through hole 321. The annular positioning part 312 is used to limit the axial position of the pressure rod 320 on the guide rod 310.

[0055] The beneficial effects of this design are as follows: the diameter of the annular positioning part 312 is larger than the diameter of the through hole 321, which precisely limits the axial position of the pressure rod 320 on the guide rod 310. During assembly, this ensures that the pressure rod 320 will not move excessively, thus keeping the screwdriver 330 in a suitable working position, accurately contacting and circumferentially limiting the valve needle 7. This helps improve the assembly accuracy of the pressure reducing valve and avoids installation deviations of the handle 6 due to improper positioning of the pressure rod 320, thereby ensuring a consistent installation height of the handle 6. Furthermore, by precisely limiting the axial position of the pressure rod 320 on the guide rod 310, assembly instability caused by the movement of the pressure rod 320 is reduced. During the tightening of the handle 6 and the installation nut, it is necessary to ensure the relative position stability of each component. The presence of the annular positioning part 312 ensures that the pressure rod 320 will not undergo unnecessary displacement on the guide rod 310 due to external interference, thereby improving the stability of the entire assembly process. Furthermore, it has a beneficial effect on operational convenience. When using the assembly fixture, operators do not need to constantly monitor the axial position of the pressure rod 320; they only need to press the pressure rod 320 down. The annular positioning part 312 automatically limits the movement range of the pressure rod 320, making operation simpler and faster. Operators can focus more on other steps, improving work efficiency. Finally, it has a certain effect on improving the consistency of assembly operations. Because the annular positioning part 312 ensures that the axial position of the pressure rod 320 is relatively fixed, it ensures that the screwdriver 330 is circumferentially limited in the same position during multiple assembly attempts or assembly by different operators. This ensures that the stress on each component is as consistent as possible, thereby improving the consistency of product assembly.

[0056] As one possible implementation, please refer to Figure 1 and Figure 2 An avoidance groove 120 is provided at the end of the cylinder 1 furthest from the limiting component. The avoidance groove 120 is used to allow the cylinder 1 to avoid the connector 9 of the valve body 5. Specifically, the avoidance groove 120 is located at the position corresponding to the connector 9 of the valve body 5 when the cylinder 1 is fitted onto the outside of the valve body 5. This ensures that the cylinder 1 will not interfere with the connector 9 of the valve body 5 during installation, so that it can be smoothly fitted onto the valve body 5.

[0057] It should be noted that the positions of the connectors 9 on different valve bodies 5 are different, so the position of the clearance groove 120 should correspond accordingly.

[0058] The beneficial effects of setting the clearance groove 120 are as follows: When the cylinder 1 is fitted onto the outside of the valve body 5, without the clearance groove 120, the cylinder 1 may collide with or interfere with the connector 9 of the valve body 5, resulting in incorrect installation. The existence of the clearance groove 120 allows the cylinder 1 to cleverly avoid the connector 9 of the valve body 5, ensuring a smooth assembly process. For example, in actual assembly, the connector 9 of the valve body 5 may have a specific shape and size. Without the clearance groove 120, complex adjustments or modifications may be required to install it on the valve body 5. However, setting the clearance groove 120 allows the cylinder 1 to be directly fitted onto the valve body 5 without any additional processing.

[0059] Furthermore, different models and specifications of pressure reducing valves may have different connector 9 designs for their valve bodies 5. The recessed groove 120 allows the cylinder 1 to accommodate various different valve body 5 connectors 9, improving the versatility of the assembly tooling. Regardless of the shape of the valve body 5 connector 9, as long as a suitable recessed groove 120 is provided on the cylinder 1, the same set of assembly tooling can be used for assembly, reducing production costs. For example, during production, if different models of pressure reducing valves need to be assembled, the size and position of the recessed groove 120 can be adjusted to accommodate different valve body 5 connectors 9, without the need to design a separate set of assembly tooling for each model of valve body 5.

[0060] Finally, the presence of the clearance groove 120 can prevent the cylinder 1 from damaging the connector 9 of the valve body 5 during installation and disassembly. The design of the clearance groove 120 keeps a certain distance between the cylinder 1 and the connector 9, reducing the possibility of collision or friction, thereby protecting the connector 9 of the valve body 5.

[0061] In some other embodiments, the support cylinder may be made of a material with a certain degree of flexibility, such as rubber or silicone. During installation, the elastic deformation of the material is used to force the support cylinder onto the valve body 5, allowing it to adapt to the shape of the valve body 5 and the presence of the connector 9.

[0062] As one possible implementation, please refer to Figure 3 and Figure 4 The pressure reducing valve assembly fixture also includes a ratchet wrench 4, which is used to apply torque to the locking nut 8 to clamp the handle 6. The side wall of the cylinder 1 is provided with an arc-shaped through hole 130, wherein the circumferential angle of the arc-shaped through hole is not greater than 180 degrees, and the arc-shaped through hole 130 is used to avoid the ratchet wrench 4.

[0063] The beneficial effects of this design are as follows: the arc-shaped through hole 130 on the side wall of the cylinder 1 is used to avoid the ratchet wrench 4, making operation more convenient. When using the ratchet wrench 4, there is no need to disassemble or move the entire tooling; simply insert the ratchet wrench 4 through the arc-shaped through hole 130 to operate. This greatly improves the convenience of operation and reduces the number of steps and time required. Using the ratchet wrench 4 allows for the rapid application of torque to the locking nut 8. During the assembly of the pressure reducing valve, using the ratchet wrench 4 can significantly save operation time and improve assembly efficiency. In summary, this design, through the introduction of the ratchet wrench 4 and the arc-shaped through hole 130, has significant beneficial effects in improving assembly efficiency and enhancing operational convenience.

[0064] As one possible implementation, please refer to Figure 1 and Figure 2 There are two first through holes 110, and the two first through holes 110 are located on the same diameter of the cylinder 1. The beneficial effects of this setting are: First, it enhances the stability of the limiting position. When the two through holes are located on the same diameter of the cylinder 1, the limiting pin 210 in the first limiting assembly 2 is inserted into the valve body 5 through these two first through holes 110, and can limit the valve needle 7 from two opposite directions. This symmetrical limiting method allows the valve needle 7 to be evenly subjected to resistance from two directions when subjected to external force, thus maintaining it more stably in a certain position and preventing the handle 6 from deviating in position due to the movement of the valve needle 7 during installation, which helps to ensure the height consistency of the handle 6 after installation. Second, it improves the assembly accuracy. The symmetrically distributed two first through holes 110 allow the limiting pin 210 to be inserted into the valve body 5 more accurately, thus providing more accurate axial positioning for the installation of the handle 6. When installing handle 6, the axial position of handle 6 is strictly limited by the limiting pin 210, which ensures that each handle 6 is at the same height position during installation, thus improving the accuracy and consistency of assembly.

[0065] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0066] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A pressure reducing valve assembly fixture, characterized in that, include: A cylindrical body (1) has a first through hole (110) on its side wall, and the cylindrical body (1) is used to accommodate the pressure reducing valve; The first limiting component (2) is movably connected to the cylinder (1) through the first through hole (110). One end of the first limiting component (2) is located inside the cylinder (1). The first limiting component (2) moves along the direction close to or away from the axis of the cylinder (1) to limit the handle (6) from approaching the valve body (5) of the pressure reducing valve along the axis of the cylinder (1). The second limiting component (3) is disposed on the cylinder (1). The second limiting component (3) has a limiting part that moves along the axial direction of the cylinder (1). The limiting part is used to engage the valve needle (7) and limit the valve needle (7) circumferentially.

2. The pressure reducing valve assembly fixture according to claim 1, characterized in that, The first limiting component (2) includes: A limiting pin (210) is slidably connected to the cylinder (1) through the first through hole (110). One end of the limiting pin (210) extends into the cylinder (1). The first limiting component (2) moves along the direction close to or away from the axis of the cylinder (1) to restrict the handle (6) from approaching the valve body (5) of the pressure reducing valve along the axis of the cylinder (1). A first annular protrusion (211) is provided around the outer wall of the limiting pin (210) in the circumferential direction. The first annular protrusion (211) is located outside the cylinder (1). The diameter of the first annular protrusion (211) is larger than the inner diameter of the first through hole (110).

3. The pressure reducing valve assembly fixture according to claim 2, characterized in that, The first limiting component (2) further includes: The first sleeve (220) has an open end face and a second through hole (221) on the other end face. The first sleeve (220) is sleeved on the outside of the limiting pin (210). The open end of the first sleeve (220) is fixedly connected to the outer wall of the cylinder (1). The second through hole (221) and the first through hole (110) are located on the same straight line with the same diameter of the cylinder (1). The first elastic element (230) is disposed inside the first sleeve (220), with its two ends respectively abutting against the end faces of the first annular protrusion (211) and the first sleeve (220). The first elastic element (230) is used to apply an elastic force close to the pressure reducing valve to the limiting pin (210).

4. The pressure reducing valve assembly fixture according to claim 1, characterized in that, The first through hole (110) is a threaded hole, the first limiting component (2) is a threaded part, the threaded part is threadedly connected to the threaded hole, and the threaded part moves radially along the cylinder (1) to restrict the handle (6) from approaching the valve body (5) of the pressure reducing valve along the axial direction of the cylinder (1).

5. The pressure reducing valve assembly fixture according to claim 1, characterized in that, The second limiting component (3) includes: Guide rod (310), the guide rod (310) is fixedly connected to the cylinder (1), and the length direction of the guide rod (310) is parallel to the axial direction of the cylinder (1); A pressure rod (320) is provided with a through hole (321), and the pressure rod (320) is slidably connected to the guide rod (310) through the through hole (321); A screwdriver (330) is provided, the tail of which is fixedly connected to the pressure rod (320). The tip of the screwdriver (330) is used to contact the valve needle (7) and circumferentially limit its movement.

6. The pressure reducing valve assembly fixture according to claim 5, characterized in that, A second annular protrusion (311) is provided around the outer wall of the guide rod (310) in the circumferential direction, and the second limiting component (3) further includes: The second sleeve (340) is sleeved on the outside of the guide rod (310) and fixedly connected to the pressure rod (320). The inner diameter of the second sleeve (340) is larger than the diameter of the second annular protrusion (311). The second elastic element (350) is disposed inside the second sleeve (340). The second elastic element (350) abuts against the second annular protrusion (311) and the pressure rod (320) respectively. The second elastic element (350) is used to apply an elastic force close to the cylinder (1) to the pressure rod (320).

7. The pressure reducing valve assembly fixture according to claim 5, characterized in that, An annular positioning part (312) is provided around the outer wall of the guide rod (310) in the circumferential direction. The diameter of the annular positioning part (312) is larger than the diameter of the through hole (321). The annular positioning part (312) is used to limit the axial position of the pressure rod (320) on the guide rod (310).

8. The pressure reducing valve assembly fixture according to claim 1, characterized in that, An avoidance groove (120) is provided at one end of the cylinder (1) away from the second limiting component (3), and the avoidance groove (120) is used to allow the cylinder (1) to avoid the connector (9) of the valve body (5).

9. The pressure reducing valve assembly fixture according to claim 1, characterized in that, The pressure reducing valve assembly fixture also includes a ratchet wrench (4), which is used to apply torque to the locking nut (8) to clamp the handle (6). The side wall of the cylinder (1) is provided with an arc-shaped through hole (130), which is used to avoid the ratchet wrench (4).

10. The pressure reducing valve assembly fixture according to claim 1, characterized in that, There are two first through holes (110), and the two first through holes (110) are located on the same diameter of the cylinder (1).

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