Air pressure regulating valve convenient to regulate

Abstract

The utility model discloses an air pressure regulating valve convenient to adjust, which belongs to the technical field of pressure regulating valves, and comprises a valve body, a plugging piece is fixedly connected in the valve body, the top of the valve body is connected with the same valve cover through a plurality of bolts, a contraction shell is arranged on the valve cover in a penetrating manner, a valve rod is movably arranged in the contraction shell in a penetrating manner, and the valve rod is fixedly connected with the valve body. The bottom of the valve rod is fixedly connected with a valve element, the valve element is clamped in the plugging piece, the outer side of the valve rod is fixedly connected with a sealing filler piece, and the sealing filler piece is located in the valve body. According to the pressure regulating valve, the opening and closing structure in the valve body is simple through the plugging piece and the valve element, the upper movable piece can be pushed to fall through the screw rod, the spring is extruded to contract, and the pressure of the spring on the lower movable piece is increased, so that the effect of regulating the pressure of the pressure regulating valve is conveniently achieved, and the practicability is improved; in the process that the valve core drives the valve cover to move upwards, the effect of sealing the shrinkage shell is achieved, and the phenomenon of medium leakage can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure regulating valve technical field, more specifically, it relates to air pressure regulating valve convenient to adjust. BACKGROUND

[0002] The pressure regulating valve is a kind of device for changing the throughput of gas or liquid and achieving certain needs, belongs to a kind of precision control instrument, usually by a master device and other auxiliary components, pressure regulating valve is usually composed of valve body, valve disc, valve stem, valve seat, spring, actuator and accessory parts.

[0003] The internal structure of the current air pressure regulating valve is relatively complex, so it is inconvenient in the pressure regulating process, which easily leads to poor one-way stress effect of the internal structure spring after pressure regulating, affecting stability. UTILITY MODEL CONTENT

[0004] (1) technical problem to be solved

[0005] In view of the deficiencies in the prior art, the utility model aims at providing air pressure regulating valve convenient to adjust, which has the characteristics of simple structure and convenient adjustment.

[0006] (2) technical scheme

[0007] To achieve the above object, the utility model provides air pressure regulating valve convenient to adjust, including valve body, the valve body is fixedly connected with the obturator in, the top of valve body is connected with the same valve cover by a plurality of bolts, the valve cover is provided with the contraction shell, the valve rod is movably provided in the contraction shell, the bottom of valve rod is fixedly connected with the valve core, the valve core is clamped in the obturator, the outer side of valve rod is fixedly connected with the sealing packing piece, the sealing packing piece is located in the valve body, the both sides of contraction shell are fixedly connected with the same cavity pipe through support rod, the cavity pipe is movably connected with lower movable piece, one end of valve rod is fixedly connected at the bottom of lower movable piece through cavity pipe, the top of cavity pipe is threadedly provided with screw rod, the shaft end of screw rod is rotatably connected with the shaft sleeve, and one end of shaft sleeve is fixedly connected with upper movable piece, the upper movable piece and lower movable piece are fixedly connected with the same spring.

[0008] When the air pressure regulating valve convenient to adjust of the technical scheme is used, the opening and closing structure in the valve body is relatively simple by the obturator and valve core, and the upper movable piece can be pushed down by screw rod, the spring is extruded to shrink, the pressure of spring on lower movable piece is increased, so that the pressure regulating effect of pressure regulating valve is conveniently achieved, the practicability is improved, and the sealing packing piece is arranged, the contraction shell can be closed in the process that valve core drives valve cover to move up, and the medium leakage phenomenon can be effectively avoided.

[0009] Further, a plurality of mounting holes are formed on the outer sides of the two ends of the valve body.

[0010] Furthermore, a sealing gasket is provided between the valve body and the valve cover, with the top and bottom of the sealing gasket overlapping the top of the valve cover and the top of the valve body, respectively.

[0011] Furthermore, the top of the cavity tube is provided with multiple vent holes, and both the lower and upper movable parts are hollowed out.

[0012] Furthermore, a limiting rod is movably inserted through one side of the top of the cavity tube, the bottom of the limiting rod is fixedly connected to the top side of the upper movable part, and a scale line is provided on the outer side of the limiting rod.

[0013] (3) Beneficial effects

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. The valve body opening and closing structure is relatively simple by using the sealing parts and valve core. The upper moving part can be pushed down by the screw, which compresses the spring and increases the pressure of the spring on the lower moving part, thereby facilitating the pressure regulation effect of the pressure regulating valve and improving its practicality. By setting the sealing packing parts, the valve core can achieve the effect of sealing the shrink shell during the upward movement of the valve cover, which can effectively prevent the leakage of the medium.

[0016] 2. The installation hole facilitates connection of the valve body to external pipelines. The sealing gasket improves the sealing effect after the valve body and valve cover are connected. The vent hole and hollowed-out upper and lower moving parts prevent pressure changes between the upper and lower moving parts from affecting the pressure regulation. The limit rod and scale line allow for a direct view of the spring's contraction length during pressure regulation. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view structural diagram of the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the middle valve body;

[0020] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the central cavity tube.

[0021] Reference signs in the drawings are:

[0022] 1, valve body; 2, mounting hole; 3, bolt; 4, valve cover; 5, sealing washer; 6, plugging piece; 7, shrinkage shell; 8, valve stem; 9, valve core; 10, sealing packing piece; 11, support rod; 12, cavity pipe; 13, air vent; 14, lower movable piece; 15, screw rod; 16, upper movable piece; 17, spring; 18, limiting rod; 19, scale line. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the following will make a clear and complete description of the technical scheme in the specific embodiment of the utility model, so as to further illustrate the utility model. Obviously, the specific embodiment described is only a part of the embodiment of the utility model, not all.

[0024] Embodiment:

[0025] The following will be combined with the Figures 1-3 The utility model is further described in detail.

[0026] Please refer to Figures 1-3 The utility model provides a kind of technical scheme: air pressure regulating valve of easy adjustment, including valve body 1, plugging piece 6 is fixedly connected in valve body 1, the top of valve body 1 is connected with same valve cover 4 by multiple bolts 3, valve cover 4 is provided with shrinkage shell 7, valve stem 8 is movably provided in shrinkage shell 7, the bottom of valve stem 8 is fixedly connected with valve core 9, valve core 9 is clamped in plugging piece 6, sealing packing piece 10 is fixedly connected on the outside of valve stem 8, sealing packing piece 10 is located in valve body 1, by being provided with sealing packing piece 10, it can reach the effect of closing shrinkage shell 7 in the process that valve core 9 drives valve cover 4 to move upwards, can effectively avoid the phenomenon that medium leaks, the same cavity pipe 12 is fixedly connected on the both sides of shrinkage shell 7 by support rod 11, lower movable piece 14 is movably connected in cavity pipe 12, one end of valve stem 8 is fixedly connected in the bottom of lower movable piece 14 by passing through cavity pipe 12, screw rod 15 is threadedly provided in the top of cavity pipe 12, the shaft end of screw rod 15 is rotatably connected with shaft sleeve, and one end of shaft sleeve is fixedly connected with upper movable piece 16, same spring 17 is fixedly connected between upper movable piece 16 and lower movable piece 14, make the opening and closing structure in valve body 1 be relatively simple by plugging piece 6 and valve core 9, and upper movable piece 16 can be pushed down by screw rod 15, extrude spring 17 to shrink, increase the pressure of spring 17 to lower movable piece 14, so as to conveniently reach the effect of pressure regulation of pressure regulating valve, improve practicality.

[0027] Specifically, multiple mounting holes 2 are provided on the outer sides of both ends of the valve body 1, and a sealing gasket 5 is provided between the valve body 1 and the valve cover 4. The top and bottom of the sealing gasket 5 overlap with the top of the valve cover 4 and the top of the valve body 1, respectively.

[0028] By adopting the above technical solution, the installation hole 2 facilitates the connection of the valve body 1 to the external pipeline, and the sealing gasket 5 improves the sealing effect after the valve body 1 is connected to the valve cover 4.

[0029] Specifically, the top of the cavity tube 12 is provided with multiple vent holes 13, the lower movable part 14 and the upper movable part 16 are both hollowed out, a limiting rod 18 is movably inserted through one side of the top of the cavity tube 12, the bottom of the limiting rod 18 is fixedly connected to the top side of the upper movable part 16, and a scale line 19 is provided on the outside of the limiting rod 18.

[0030] By adopting the above technical solution, by setting the vent hole 13 and the hollowed-out upper movable part 16 and lower movable part 14, the pressure change between the upper movable part 16 and the lower movable part 14 is avoided from affecting the pressure adjustment. By setting the limit rod 18 and the scale line 19, the contraction length of the spring 17 during the pressure adjustment process can be intuitively understood.

[0031] The working principle of this utility model is as follows: In use, both ends of the valve body 1 are connected to external pipes. When the medium in one of the external pipes enters the valve body 1 (the medium can be liquid or air, which are known substances in this technical field and will not be described in detail here), the pressure generated presses against the valve core 9. When the pressure is large, the valve core 9 moves upward, causing the valve stem 8 to rise. The sealing packing 10 on the valve stem 8 moves into the contraction shell 7, the valve core 9 unfolds the sealing member 6, and the medium flows out through the sealing member 6 and out through the other end of the valve body 1. At the same time, the valve stem 8 squeezes the lower movable member 14, and the lower movable member... When the pressure inside the valve body 1 decreases, the spring 17 contracts due to the compression of the moving part 14. The spring 17 then presses the lower moving part 14, causing the valve stem 8 to move downward. The valve core 9 blocks the sealing part 6, cutting off the flow of the medium. During pressure adjustment, the screw 15 can be rotated, which pushes the upper moving part 16 downward. The upper moving part 16 compresses the spring 17, increasing the pressure of the spring 17 on the lower moving part 14 and allowing the valve body 1 to withstand a larger medium pressure. When the pressure inside the valve body 1 exceeds the withstand pressure, the above operation can be repeated to release the medium.

[0032] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. Air pressure regulating valve for easy adjustment, comprising a valve body (1), characterized in that: The valve body (1) is fixedly connected with a blocking piece (6), the top of the valve body (1) is connected with a same valve cover (4) through a plurality of bolts (3), a contraction shell (7) is arranged on the valve cover (4), a valve rod (8) is movably arranged in the contraction shell (7), the bottom of the valve rod (8) is fixedly connected with a valve core (9), the valve core (9) is clamped in the blocking piece (6), a sealing packing piece (10) is fixedly connected to the outer side of the valve rod (8), the sealing packing piece (10) is located in the valve body (1), the contraction shell (7) is fixedly connected with a same cavity tube (12) on both sides through a support rod (11), a lower movable piece (14) is movably arranged in the cavity tube (12), one end of the valve rod (8) is fixedly connected to the bottom of the lower movable piece (14) through the cavity tube (12), a screw rod (15) is threadedly arranged on the top of the cavity tube (12), the shaft end of the screw rod (15) is rotatably connected with a shaft sleeve, one end of the shaft sleeve is fixedly connected with an upper movable piece (16), the upper movable piece (16) and the lower movable piece (14) are fixedly connected with a same spring (17).

2. The easily adjustable air pressure regulating valve of claim 1, wherein: A plurality of mounting holes (2) are formed in the outer sides of both ends of the valve body (1).

3. The easily adjustable air pressure regulating valve of claim 1, wherein: A sealing washer (5) is arranged between the valve body (1) and the valve cover (4), and the top and bottom of the sealing washer (5) are respectively overlapped with the top of the valve cover (4) and the top of the valve body (1).

4. The easily adjustable air pressure regulating valve of claim 1, wherein: The top of the cavity tube (12) is provided with a plurality of air holes (13), and the lower movable piece (14) and the upper movable piece (16) are hollow designed.

5. The easily adjustable air pressure regulating valve of claim 1, wherein: A limiting rod (18) is movably arranged on one side of the top of the cavity tube (12), the bottom of the limiting rod (18) is fixedly connected to one side of the top of the upper movable piece (16), and a scale line (19) is arranged on the outer side of the limiting rod (18).

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