Pressure stabilizing valve with flow guide groove in valve core seat

Abstract

A pressure maintaining valve with a flow guide groove in a valve element seat comprises a valve body, a valve cover, the annular valve element seat made of rubber materials, a shaft core part, an elastic assembly, a pressure adjusting spring and an adjusting cap, the annular valve element seat is arranged in a seat cavity, an inverted-cone-shaped core part is matched with the end of the annular valve element seat, a core rod part penetrates through the annular valve element seat, and the valve element seat is provided with a flow guide groove. The head penetrates through the elastic assembly, the baffle disc is attached to the elastic assembly, and the head and the elastic assembly are fixed; the edge of the elastic assembly is embedded into a counter bore of the movable cavity, the valve deck is buckled with the movable cavity and fixes the elastic assembly, and the pressure adjusting spring is arranged in the inner threaded sleeve and abuts against the elastic assembly. And the adjusting cap is screwed with the internal thread sleeve and is matched with the pressure adjusting spring. The inverted-cone-shaped core part is matched with the air inlet end of the circular-ring-shaped valve element seat, the pressure of the air inlet cavity and the pressure of the air outlet cavity are changed, and the inverted-cone-shaped core part can adjust the size of the air inlet end of the axial air groove. The device adapts to different pressures and keeps constant output.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pressure stabilizing valve. BACKGROUND

[0002] The prior art, Chinese patent 202122340083.7, a pressure stabilizing valve, comprising a valve body, the valve body comprises: an inlet cavity and an outlet cavity, the inlet cavity and the outlet cavity are mutually independent and separated; a first channel, the first channel communicates the inlet cavity and the outlet cavity; an elastic sealing assembly, the elastic sealing assembly is arranged in the outlet cavity, and the elastic sealing assembly can open or close the first channel according to the change of the internal pressure of the outlet cavity; further comprising a second channel, the second channel communicates the inlet cavity and the outlet cavity, and the cross-sectional area of the second channel is smaller than that of the first channel. When the fluid in the outlet cavity flows out continuously and rapidly, part of the fluid in the inlet cavity can flow into the outlet cavity through the second channel to supplement the fluid in the outlet cavity, preventing the elastic sealing assembly from rapidly recovering deformation due to sudden changes in fluid pressure in the outlet cavity, effectively protecting the elastic sealing assembly and prolonging the service life of the pressure stabilizing valve. The problem is that the diameter of the second channel is fixed. SUMMARY

[0003] The utility model aims at: provide a valve core seat set up the pressure stabilizing valve of guide flow groove, it has with pressure change and change and adapt to different pressure characteristics.

[0004] The utility model is realized in this way: a valve core seat set up the pressure stabilizing valve of guide flow groove, and its special features are: including valve body, valve cover, the circular ring valve core seat of rubber material, shaft core spare, elastic assembly, pressure regulating spring and adjusting cap,

[0005] The valve body comprises an air inlet cavity, an air outlet cavity, a movable cavity with an opening and a seat cavity with upper and lower openings on the partition plate between the air inlet cavity and the air outlet cavity, and the movable cavity and the air outlet cavity are communicated;

[0006] A female threaded sleeve is arranged on the valve cover.

[0007] An axial air groove is arranged on the inner wall of the axial hole of the circular ring valve core seat.

[0008] The shaft core spare comprises an inverted conical core part, a core rod part, a baffle disc and a head part,

[0009] An external thread is arranged on the adjusting cap.

[0010] The circular ring valve core seat is arranged in the seat cavity, the inverted conical core part is matched with the end of the circular ring valve core seat, the core rod part passes through the circular ring valve core seat, the head part passes through the elastic assembly, the baffle plate is attached to the elastic assembly, and the head part and the elastic assembly are fixed; the edge of the elastic assembly is embedded in the counterbore of the movable cavity, the valve cover is buckled with the movable cavity and fixes the elastic assembly, the pressure regulating spring is arranged in the inner threaded sleeve and abuts against the elastic assembly; the adjusting cap is screwed with the inner threaded sleeve and matched with the pressure regulating spring.

[0011] The valve core seat setting flow guide groove pressure stabilizing valve has the special structure that the seat cavity and the movable cavity are provided with a seat counterbore at one end, and the circular ring valve core seat is embedded in the seat counterbore.

[0012] The valve core seat setting flow guide groove pressure stabilizing valve has the special structure that the valve core seat setting flow guide groove pressure stabilizing valve further comprises a check ring, the end of the circular ring valve core seat is provided with a plug-in part, the plug-in part is inserted into the check ring, the check ring is matched with the seat counterbore, and the circular ring valve core seat is kept in the seat counterbore.

[0013] The valve core seat setting flow guide groove pressure stabilizing valve has the special structure that the inlet end of the circular ring valve core seat is provided with a circular ring plate made of hard plastic or metal material.

[0014] The valve core seat setting flow guide groove pressure stabilizing valve has the special structure that the adjusting cap is provided with a spring column and a screwdriver slot; the spring column is inserted into the pressure regulating spring.

[0015] The valve core seat setting flow guide groove pressure stabilizing valve has the special structure that the elastic assembly comprises a diaphragm, a tray and a gasket, the diaphragm comprises a planar part, a curved surface part and a ring-shaped pin arranged at the center.

[0016] The movable cavity is provided with an annular plug-in groove on the counterbore; the ring-shaped pin and the annular plug-in groove are embedded.

[0017] The valve core seat setting flow guide groove pressure stabilizing valve has the special structure that the inverted conical core part is matched with the inlet end of the circular ring valve core seat, the pressure of the inlet cavity and the outlet cavity changes, the inverted conical core part can adjust the size of the inlet end of the axial air groove; different pressures are adapted, and the output is kept constant. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a sectional view of the utility model.

[0019] Figure 2 It is a perspective view of the utility model.

[0020] Figure 3 It is one of the utility model's perspective exploded view.

[0021] Figure 4 It is the second of the utility model's perspective exploded view. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for the purpose of explaining the present application, and should not be understood as limiting the present application.

[0023] In the description of the present application, it should be noted that unless specifically defined and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] As shown in Figure 1 , Figure 3 , Figure 4 A valve core seat with flow guide groove, comprising a valve body 1, a valve cover 2, a circular ring-shaped valve core seat 3 made of rubber material, a shaft core 4, an elastic assembly 5, a pressure regulating spring 6 and an adjusting cap 7,

[0025] The valve body 1 comprises an air inlet cavity 11, an air outlet cavity 12, an open movable cavity 13 and an upper and lower open seat cavity 14 through the partition between the air inlet cavity 11 and the movable cavity 13, the movable cavity 13 and the air outlet cavity 12 are communicated;

[0026] The valve cover 2 is provided with an internal thread sleeve 21;

[0027] The inner wall of the axial hole 31 of the circular ring-shaped valve core seat 3 is provided with an axial air groove 32;

[0028] The shaft core 4 comprises a reverse conical core 41, a core rod 42, a baffle disc 43 and a head 44,

[0029] The adjusting cap 7 is provided with an external thread;

[0030] The circular ring-shaped valve core seat 3 is arranged in the seat cavity 14, the reverse conical core 41 cooperates with the air inlet end of the circular ring-shaped valve core seat 3, the core rod 42 passes through the circular ring-shaped valve core seat 3, the head 44 passes through the elastic assembly 5, the baffle disc 43 is attached to the elastic assembly 5, and the head 44 and the elastic assembly 5 are fixed; The edge of the elastic assembly 5 is embedded in the counterbore 131 of the movable cavity 13, the valve cover 2 is buckled with the movable cavity 13 and fixes the elastic assembly 5, the pressure regulating spring 6 is arranged in the internal thread sleeve 21 and abuts against the elastic assembly 5; The adjusting cap 7 is screwed with the internal thread sleeve 21 and cooperates with the pressure regulating spring 6;

[0031] Figure 1Is the view under static; Turn the adjusting cap 7, realize the elastic force of adjusting pressure spring, be applicable to different pressure, realize the adjustment under different pressure, the clearance between the inverted conical core 41 and the air inlet end of the circular ring valve core seat 3; The pressure of movable cavity 13 is big, the inverted conical core 41 is matched with the air inlet end of the circular ring valve core seat 3, and the size of the air inlet end of the axial air groove is adjusted.

[0032] As a further improvement of the utility model: the seat cavity 14 is provided with a seat counterbore 141 at one end opposite the movable cavity 13, and the circular ring valve core seat 3 is embedded in the seat counterbore 141; the overhanging end of the inverted conical core 41 is located in the seat cavity 14 and moves up and down in the seat cavity.

[0033] As a further improvement of the utility model: it further comprises a retaining ring 8, the end of the circular ring valve core seat 3 is provided with a plug-in part, the plug-in part is inserted into the retaining ring 8, the retaining ring cooperates with the seat counterbore 141 to keep the circular ring valve core seat 3 in the seat counterbore 141.

[0034] As a further improvement of the utility model: a circular ring plate 33 made of hard plastic or metal material is arranged on the air inlet end of the circular ring valve core seat 3, which can be pre-embedded or provided with a circular ring cavity and a ring-shaped guide inlet arranged at the end, and the circular ring 33 is embedded in the circular ring cavity through the ring-shaped guide inlet.

[0035] As a further improvement of the utility model: the adjusting cap 7 is provided with a spring column 71 and a screwdriver slot 72; the spring column 71 is inserted into the pressure regulating spring.

[0036] The elastic assembly 5 comprises a diaphragm 51, a tray 52 and a gasket 53, the diaphragm 51 comprises a planar part 511, a curved part 512 and a ring-shaped pin 513 arranged at the center;

[0037] The counterbore 131 of the movable cavity 13 is provided with a ring-shaped plug-in slot; the ring-shaped pin 513 and the ring-shaped plug-in slot are embedded; the head 44 is inserted into the connecting hole of the planar part 511, the tray 52 and the gasket 53 and is screwed with the screw; the gasket 54 is inserted into the pressure regulating spring, and the pressure regulating spring cooperates with the tray 52.

[0038] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A pressure stabilizing valve having a spool seat provided with a flow guide groove, characterized by: The valve body, the valve cover, the circular ring valve core seat made of rubber material, the shaft core piece, the elastic assembly, the pressure regulating spring and the adjusting cap, The valve body comprises an air inlet cavity, an air outlet cavity, a movable cavity with an opening, and a seat cavity with upper and lower openings penetrating the partition between the air inlet cavity and the air outlet cavity, and the movable cavity and the air outlet cavity are communicated; The valve cover is provided with an internal thread sleeve; An axial air groove is arranged on the inner wall of the axial hole of the circular ring valve core seat; The shaft core piece comprises an inverted conical core part, a core rod part, a baffle disc and a head part, The adjusting cap is provided with an external thread; The circular ring valve core seat is arranged in the seat cavity, the inverted conical core part is matched with the end part of the circular ring valve core seat, the core rod part penetrates the circular ring valve core seat, the head part penetrates the elastic assembly, the baffle disc is attached to the elastic assembly, and the head part and the elastic assembly are fixed; the edge of the elastic assembly is embedded in the counterbore of the movable cavity, the valve cover is buckled with the movable cavity and fixes the elastic assembly, the pressure regulating spring is arranged in the internal thread sleeve and abuts against the elastic assembly; the adjusting cap is screwed with the internal thread sleeve and matched with the pressure regulating spring; The seat cavity is provided with a seat counterbore at one end opposite to the movable cavity, and the circular ring valve core seat is embedded in the seat counterbore; and the overhanging end of the inverted conical core part is located in the seat cavity; Further comprising a baffle ring, the end part of the circular ring valve core seat is provided with a plug-in part, the plug-in part is inserted into the baffle ring, the baffle ring is matched with the seat counterbore, and the circular ring valve core seat is kept in the seat counterbore; The pressure of the movable cavity is large, the inverted conical core part is matched with the air inlet end of the circular ring valve core seat, and the size of the air inlet end of the axial air groove is adjusted.

2. The pressure-stabilizing valve according to claim 1, wherein: A circular ring plate made of hard plastic or metal material is arranged in the air inlet end of the circular ring valve core seat.

3. The pressure-stabilizing valve according to claim 1, wherein: A spring column and a screwdriver slot are arranged on the adjusting cap; the spring column is inserted into the pressure regulating spring.

4. The pressure-stabilizing valve according to claim 1, 2 or 3, characterized in that: The elastic assembly comprises a diaphragm, a tray and a gasket, the diaphragm comprises a planar part, a curved surface part and a ring-shaped pin arranged at the center; An annular plug-in groove is arranged on the counterbore of the movable cavity; the ring-shaped pin and the annular plug-in groove are embedded.

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