Pressure reducing valve structure

Abstract

The utility model discloses a pressure reducing valve structure which comprises a valve body and a gland, an air inlet connecting port is arranged in the middle of the bottom face of the valve body, an air outlet control cavity is arranged on the side portion of the valve body, a tray structure is arranged between the gland and the valve body, a valve core is arranged in the air inlet connecting port, and the top of the valve core is connected with the tray structure. Air outlet holes are respectively formed in the symmetrical side walls of the air outlet control cavity; a knob valve element is arranged in the air outlet control cavity, and a knob rod of the knob valve element penetrates through the fixing plate. An air inlet cavity is formed in the end, away from the rotary knob rod, of the rotary knob valve element, and air guide holes communicated with the air inlet cavity are formed in the symmetrical side walls of the rotary knob valve element. According to the utility model, the structural arrangement is reasonable, the sealing control can be realized through the valve core, the adjustment control can also be realized through the knob valve core, the control of different flows can be realized during rotation, the effectiveness of circulation control can be ensured, the adjustment operation is more convenient, and the improvement of the control stability and the use safety is facilitated.

Description

Technical Field

[0001] This utility model belongs to the technical field of outdoor stove components, specifically relating to a pressure reducing valve structure. Background Technology

[0002] Outdoor stoves are essential tools for camping and outings, and they all have corresponding pressure reducing valves. Existing conventional pressure reducing valves include a valve body, a first air inlet, and an air inlet connector, with the air inlet connector forming a second air inlet between the first air inlet, such as CN201821098947.0. Although this can meet the general usage needs, its pressure reducing valve has limited control and adjustment effects and is not conducive to air intake control operation, which affects the stability and effectiveness of use and limits its applicability. Summary of the Invention

[0003] The purpose of this invention is to provide a pressure reducing valve structure that is reasonably designed and easy to adjust.

[0004] The technical solution to achieve the purpose of this utility model is a pressure reducing valve structure, including a valve body and a pressure cap fixed to the top surface of the valve body by fixing screws. An air inlet connection port is provided in the middle of the bottom surface of the valve body, and an air outlet control chamber communicating with the inner cavity of the valve body is provided on the side of the valve body. A tray structure is provided between the pressure cap and the valve body. A valve core is provided in the air inlet connection port, and the top of the valve core is connected to the tray structure.

[0005] Air outlet holes are respectively provided on the symmetrical sidewalls of the air outlet control chamber;

[0006] The air outlet control chamber is equipped with a rotary valve core, and a fixing plate is fixed to the opening of the air outlet control chamber by positioning screws. The knob rod of the rotary valve core passes through the fixing plate.

[0007] An air inlet chamber is provided at the end of the knob valve core away from the knob lever, and an air guide hole communicating with the air inlet chamber is provided on the symmetrical side wall of the knob valve core.

[0008] The knob valve core rotates, gradually connecting the air outlet with the air guide and controlling the flow rate.

[0009] A further preferred embodiment is that a sealing sleeve is fitted on the outer side of the knob valve core, and the sealing sleeve is provided with a circular through hole that matches the air guide hole;

[0010] The knob valve core is sealed to the inner wall of the air outlet control chamber by a sealing sleeve.

[0011] A further preferred embodiment is that the tray structure includes an upper tray, a spring, a lower tray, a diaphragm, an adjusting screw, and a locking bolt;

[0012] The diaphragm is attached to the bottom surface of the lower tray by a locking bolt, and the top of the valve core abuts against the bottom surface of the locking bolt.

[0013] The edge of the diaphragm is located at the connection between the gland and the valve body and is clamped and positioned.

[0014] The adjusting screw is threaded onto the center of the top surface of the gland;

[0015] The upper tray is located on the top wall of the inner cavity of the pressure cap, and the spring is located between the upper tray and the lower tray;

[0016] The valve core is pressed into the intake connection port by the action of the spring and the diaphragm. When air pressure enters the intake connection port, the valve core moves upward and compresses the spring, while the diaphragm is deformed.

[0017] A further preferred embodiment is that the diaphragm has an arched buffer protrusion integrally formed on it.

[0018] A further preferred embodiment is that an O-ring is provided at the connection between the knob valve core and the fixing plate.

[0019] A further preferred embodiment is that the knob rod of the rotary valve core passes through the fixing plate and is positioned by a retaining ring.

[0020] A further preferred embodiment is that the air outlet control chamber is a frustum-shaped control chamber with a small inner diameter and a large outer diameter.

[0021] This utility model has positive effects: its structure is reasonably designed. By setting a valve core in conjunction with a knob valve core, it can not only achieve sealing control through the valve core, but also adjust and control through the knob valve core. Furthermore, air guide holes are provided on the symmetrical side walls of the knob valve core, which can achieve different flow rate control when rotated, and can also ensure the effectiveness of flow control. The adjustment operation is more convenient, which helps to improve the stability of control and the safety of use, and has strong applicability. Attached Figure Description

[0022] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 3 This is a schematic diagram of the exploded structure of this utility model.

[0026] Reference numerals: 1. Valve body; 2. Fixing screw; 3. Pressure cap; 4. Inlet connection port; 5. Outlet control chamber; 6. Tray structure; 61. Upper tray; 62. Spring; 63. Lower tray; 64. Diaphragm; 65. Adjusting screw; 66. Locking bolt; 7. Valve core; 8. Outlet port; 9. Knob valve core; 10. Positioning screw; 11. Fixing plate; 12. Inlet chamber; 13. Air guide hole; 14. Sealing sleeve; 15. Circular through hole; 16. Arched buffer protrusion; 17. O-ring seal; 18. Snap ring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0028] See Figures 1 to 3 As shown, a pressure reducing valve structure includes a valve body 1 and a pressure cap 3 fixed to the top surface of the valve body by fixing screws 2. An air inlet connection port 4 is provided in the middle of the bottom surface of the valve body. In this embodiment, the valve body and the pressure cap are conventional structures of the prior art, and are simply applied, so they are not described in detail.

[0029] In this embodiment, the valve body has an outlet control chamber 5 on its side that communicates with the inner cavity of the valve body. A tray structure 6 is provided between the pressure cap and the valve body. A valve core 7 is provided inside the inlet connection port, and the top of the valve core is connected to the tray structure. In practical applications, the outlet control chamber is a frustum-shaped control chamber with a small inner diameter and a large outer diameter. The valve core is a conventional structure in the prior art, and it is simply applied.

[0030] In this embodiment, air outlet holes 8 are respectively provided on the symmetrical sidewalls of the air outlet control chamber; and a rotary valve core 9 is provided inside the air outlet control chamber, and a fixing plate 11 is fixed to the opening of the air outlet control chamber by a positioning screw 10, with the knob rod of the rotary valve core passing through the fixing plate; simultaneously, during processing, an air inlet chamber 12 is provided at the end of the rotary valve core away from the knob rod, and an air guide hole 13 communicating with the air inlet chamber is provided on the symmetrical sidewall of the rotary valve core; in use, the rotary valve core is rotated, and the air outlet hole and the air guide hole are gradually connected to achieve flow rate control. Its air inlet chamber is connected to the inner cavity of the valve body, and the airflow through the air inlet connection port and the valve core will enter the air inlet chamber. When the rotary valve core is rotated to connect the air guide hole and the air outlet hole, the airflow can flow out from the air outlet hole. The flow rate control operation is achieved by rotation, improving the effectiveness and stability of control.

[0031] Furthermore, a sealing sleeve 14 is fitted around the outer side of the rotary valve core, and the sealing sleeve has a circular through hole 15 that mates with the air guide hole; the rotary valve core is sealed to the inner wall of the air outlet control chamber through the sealing sleeve. The sealing sleeve is made of rubber or silicone material and is mainly used to ensure the sealing between the rotary valve core and the air outlet control chamber.

[0032] In this embodiment, the tray structure includes an upper tray 61, a spring 62, a lower tray 63, a diaphragm 64, an adjusting screw 65, and a locking bolt 66. The upper and lower trays are mainly for facilitating the installation and positioning of the spring. The diaphragm is a conventional structure in the prior art, which can achieve small vertical displacement. Together with the valve core, it ensures the effectiveness and reliability of unidirectional air intake at the air intake connection port.

[0033] During assembly, the diaphragm is attached to the bottom surface of the lower tray by locking bolts, and the top of the valve core abuts against the bottom surface of the locking bolts; the edge of the diaphragm is located at the connection between the gland and the valve body and is clamped and positioned; the adjusting screw is threaded to the center of the top surface of the gland; the upper tray is located on the top wall of the inner cavity of the gland, and the spring is located between the upper and lower trays; the valve core, under the action of the spring and the diaphragm, abuts into the intake connection port. When air pressure enters the intake connection port, the valve core moves upward and compresses the spring, simultaneously deforming the diaphragm. In practical applications, the locking bolts can be replaced by riveting, mainly to ensure the stability and reliability of the connection between the diaphragm and the lower tray.

[0034] In this embodiment, an arched buffer protrusion 16 is integrally formed on the diaphragm. This increases the vertical movement range of the diaphragm. An O-ring 17 is provided at the connection between the knob valve core and the fixed plate. The knob rod of the knob valve core passes through the fixed plate and is positioned by a retaining ring 18. Through the above structure, the stability and reliability of the knob valve core connection can be ensured.

[0035] This utility model has positive effects: its structure is reasonably designed. By setting a valve core in conjunction with a knob valve core, it can not only achieve sealing control through the valve core, but also adjust and control through the knob valve core. Furthermore, air guide holes are provided on the symmetrical side walls of the knob valve core, which can achieve different flow rate control when rotated, and can also ensure the effectiveness of flow control. The adjustment operation is more convenient, which helps to improve the stability of control and the safety of use, and has strong applicability.

[0036] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0037] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A pressure reducing valve structure, comprising a valve body and a pressure cap fixed to the top surface of the valve body by fixing screws, wherein an air inlet connection port is provided in the middle of the bottom surface of the valve body, and an air outlet control chamber communicating with the inner cavity of the valve body is provided on the side of the valve body, characterized in that: A tray structure is provided between the pressure cap and the valve body, and a valve core is provided inside the air inlet connection port. The top of the valve core is connected to the tray structure. Air outlet holes are respectively provided on the symmetrical sidewalls of the air outlet control chamber; The air outlet control chamber is equipped with a rotary valve core, and a fixing plate is fixed to the opening of the air outlet control chamber by positioning screws. The knob rod of the rotary valve core passes through the fixing plate. An air inlet chamber is provided at the end of the knob valve core away from the knob lever, and an air guide hole communicating with the air inlet chamber is provided on the symmetrical side wall of the knob valve core. The knob valve core rotates, gradually connecting the air outlet with the air guide and controlling the flow rate.

2. The pressure reducing valve structure according to claim 1, characterized by: A sealing sleeve is provided on the outer side of the knob valve core, and a circular through hole is provided on the sealing sleeve to cooperate with the air guide hole. The knob valve core is sealed to the inner wall of the air outlet control chamber by a sealing sleeve.

3. The pressure reducing valve structure according to claim 1, wherein: The tray structure includes an upper tray, a spring, a lower tray, a diaphragm, an adjusting screw, and a locking bolt; The diaphragm is attached to the bottom surface of the lower tray by a locking bolt, and the top of the valve core abuts against the bottom surface of the locking bolt. The edge of the diaphragm is located at the connection between the gland and the valve body and is clamped and positioned. The adjusting screw is threaded onto the center of the top surface of the gland; The upper tray is located on the top wall of the inner cavity of the pressure cap, and the spring is located between the upper tray and the lower tray; The valve core is pressed into the intake connection port by the action of the spring and the diaphragm. When air pressure enters the intake connection port, the valve core moves upward and compresses the spring, while the diaphragm is deformed.

4. The pressure reducing valve structure according to claim 3, wherein: The diaphragm has an arched buffer protrusion integrally formed on it.

5. The pressure reducing valve structure according to claim 1, wherein: An O-ring is provided at the connection between the knob valve core and the fixed plate.

6. The pressure reducing valve structure according to claim 1, wherein: The knob rod of the rotary valve core passes through the fixing plate and is positioned by a retaining ring.

7. The pressure reducing valve structure according to claim 1, wherein: The air outlet control chamber is a frustum-shaped control chamber with a small inner diameter and a large outer diameter.

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