CN215110749U - Differential large-flow mining safety valve - Google Patents
Differential large-flow mining safety valve Download PDFInfo
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- CN215110749U CN215110749U CN202121554645.1U CN202121554645U CN215110749U CN 215110749 U CN215110749 U CN 215110749U CN 202121554645 U CN202121554645 U CN 202121554645U CN 215110749 U CN215110749 U CN 215110749U
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Abstract
The utility model relates to a large-traffic mining relief valve of differential type, which comprises a valve body, case chamber and spring chamber have been seted up along length direction in the valve body, the gliding case of valve body length direction can be followed to case intracavity, and the pressure regulating spring of top on the case is equipped with in the spring chamber, the one end that the valve body is close to the case chamber is opened there is the inlet that communicates with the case chamber, open the side in case chamber has the liquid outlet, it has the orifice of intercommunication inlet and spring chamber to open on the case, and the area that the case is close to inlet one end is greater than the area that is close to spring chamber one end, and when high-pressure liquid is used case off-load mouth plane through the inlet, a part of liquid gets into the spring chamber of valve body through the orifice to use the case back, because the area that the case is close to inlet one end is greater than the area of spring chamber one end, so form differential action, guaranteeing the big cross-section of valve port, the spring chamber, The spring force is greatly reduced while the flow rate is high, so that the size of the spring and the overall size of the safety valve are greatly reduced.
Description
Technical Field
The utility model relates to a relief valve field specifically indicates a large-traffic mining relief valve of differential type.
Background
The current mining safety valves are of direct-acting type, and due to structural limitation, if a large flow rate of more than 1000L/min is achieved, the size of a spring is required to be very large, so that a valve body is also very large and cannot be installed on equipment; if the nitrogen spring is used, the problems that nitrogen is easy to leak, a user cannot supplement air by himself and the like exist, and the nitrogen spring is not ideal.
Disclosure of Invention
The utility model discloses to prior art not enough, provide a large-traffic mining relief valve of differential type, these problems of fine solution of this differential type relief valve are the most reliable, the most ideal, the most advanced mode of large-traffic problem is solved to present mining relief valve.
The utility model discloses a through following technical scheme realizes, provide a large-traffic mining relief valve of differential type, which comprises a valve body, case chamber and spring chamber have been seted up along length direction in the valve body, the gliding case of valve body length direction can be followed to the case intracavity, and the pressure regulating spring on the case is equipped with on the top in the spring chamber, the one end that the valve body is close to the case chamber is opened has the inlet that communicates with the case chamber, open the side in case chamber has the liquid outlet, it has the orifice that communicates inlet and spring chamber to open on the case, and the area that the case is close to inlet one end is greater than the area that is close to spring chamber one end.
The inlet in this scheme and feed liquor pipe intercommunication, when the valve core off-load mouth plane was used through the inlet to high-pressure liquid, partly liquid got into the spring chamber of valve body through the orifice at valve core center to use the case back, because the area that the case is close to inlet one end is greater than the area that is close to spring chamber one end, so form differential action, when guaranteeing the big cross-section of valve port, large-traffic, reduced the spring force by a wide margin, thereby very big spring size and the whole size of relief valve have been reduced.
Preferably, a threaded hole is formed in the liquid inlet, and a liquid inlet pipe joint is connected in the threaded hole. The liquid inlet pipe joint arranged in the scheme is used for being connected with a liquid inlet pipe.
Preferably, the end of the liquid inlet pipe joint is fixedly connected with a sleeve extending into the valve core cavity, and the end of the valve core is propped against the sleeve. The tip top of case in this scheme plays limiting displacement to the case on the sleeve pipe, and the sealed effect between feed liquor coupling and the valve body can be strengthened to the sleeve pipe that sets up simultaneously.
Preferably, the liquid outlet is provided with a plurality of liquid outlets and is arranged along the circumferential direction of the valve body. The liquid outlet in this scheme is provided with a plurality ofly to the liquid of adaptation large-traffic.
Preferably, the diameter of the spring cavity is larger than that of the valve core cavity, a spring cap positioned between the pressure regulating spring and the valve core is arranged in the spring cavity, a bulge which is propped against the throttling hole is arranged on the spring cap, and a through hole which is communicated with the spring cavity and the throttling hole is formed in the bulge. The diameter of spring chamber is greater than the diameter of case chamber in this scheme to be convenient for install big spring, the spring passes through the spring cap top on the case.
As optimization, one end of the valve body, which is far away from the liquid inlet, is provided with a threaded hole, a pressure regulating screw is connected in the threaded hole, and one end, which is far away from the valve core, of the pressure regulating spring is propped against the pressure regulating screw. The pressure regulating screw in this scheme is used for adjusting the pretightning force of pressure regulating spring to adjust the regulation pressure of safety valve.
Preferably, the pressure regulating screw is fixedly connected with a positioning boss extending into the inner ring of the pressure regulating spring. The location boss in this scheme stretches into to pressure regulating spring inner circle, plays the support positioning action to pressure regulating spring.
The utility model has the advantages that: the utility model discloses a large-traffic mining relief valve of differential type, when the valve core off-load mouth plane is used through the inlet to high-pressure liquid, some liquid gets into the spring chamber of valve body through the orifice at case center, and use the case back, because the area that the case is close to inlet one end is greater than the area that is close to spring chamber one end, so form differential action, guarantee the big cross-section of valve port, large-traffic in, the spring force has been reduced by a wide margin, thereby very big spring size and relief valve overall dimension have been reduced, can solve the large-traffic problem of mining relief valve.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
fig. 2 is a schematic sectional view of the safety valve of the present invention in an opened state;
FIG. 3 is an enlarged view of the portion A of FIG. 1 according to the present invention;
shown in the figure:
1. valve body, 2, case, 3, inlet, 4, pressure regulating spring, 5, pressure regulating screw, 6, liquid outlet, 7, inlet coupling, 8, spring cap.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in fig. 1-3, the utility model discloses a large-traffic mining relief valve of differential type, including valve body 1, valve body 1 is the pipe form, valve core chamber and spring chamber have been seted up along length direction in the valve body 1.
The valve core cavity is internally provided with a valve core 2 which can slide along the length direction of the valve body 1, and the outer ring of the valve core 2 is provided with a plurality of sealing rings to play a role of sealing.
One end of the valve body 1 close to the valve core cavity is provided with a liquid inlet 3 communicated with the valve core cavity, a threaded hole is formed in the liquid inlet 3, a liquid inlet pipe joint 7 is connected in the threaded hole, and the diameter of the threaded hole is larger than that of the valve core cavity.
The end part of the liquid inlet pipe joint 7 is fixedly connected with a sleeve extending into the valve core cavity, the outer ring of the sleeve is provided with a sealing ring, and the end part of the valve core 2 is propped against the sleeve.
The valve core 2 is provided with a throttling hole communicated with the liquid inlet 3 and the spring cavity, the throttling hole is positioned in the center of the valve core 2, the area of one end, close to the liquid inlet 3, of the valve core 2 is larger than the area of one end, close to the spring cavity, of the valve core, the valve core cavity in the embodiment is a stepped hole, the large-diameter end of the stepped hole is communicated with the liquid inlet 3, and the small-diameter end of the stepped hole is communicated with the spring cavity.
The side of case chamber is opened there is liquid outlet 6, liquid outlet 6 is provided with a plurality ofly and arranges along valve body 1 circumference, and liquid outlet 6 sets up the junction at case chamber major diameter end and path end.
The pressure regulating spring 4 of top on case 2 is equipped with in the spring chamber, the diameter in spring chamber is greater than the diameter in case chamber, is equipped with the spring cap 8 that is located between pressure regulating spring 4 and case 2 in the spring chamber, and the diameter of spring cap 8 is greater than the diameter of case 2, and pressure regulating spring 4 top is on spring cap 8, be equipped with the arch of top on the orifice on spring cap 8, it has the through hole of intercommunication spring chamber and orifice to open in the arch, the through hole is located the center of spring cap 8.
The one end that inlet 3 was kept away from to valve body 1 is equipped with the screw hole, threaded hole internal connection has pressure regulating screw 5, and open the outer end of pressure regulating screw 5 has the hexagonal counter bore, the rotatory pressure regulating screw 5 of being convenient for, the one end top that case 2 was kept away from to pressure regulating spring 4 is on pressure regulating screw 5.
And a positioning boss extending into the inner ring of the pressure regulating spring 4 is fixedly connected to the pressure regulating screw 5.
The utility model discloses a use method: the utility model discloses a feed liquor union coupling 7 and feed liquor pipe intercommunication, liquid outlet and drain pipe intercommunication, when high-pressure liquid is used 2 off-load mouth planes of case through inlet 3, some liquid gets into the spring chamber of valve body 1 through the orifice at case 2 center, and use the case 2 back, because the area that case 2 is close to inlet one end is greater than the area that is close to spring chamber one end, so form differential action, guarantee the big cross-section of valve port, in large-traffic, the spring force has been reduced by a wide margin, can adjust the pretightning force of pressure regulating spring 4 through rotatory pressure regulating screw 5, thereby adjust the adjusting pressure of relief valve.
Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.
Claims (7)
1. A large-traffic mining relief valve of differential type which characterized in that: including valve body (1), case chamber and spring chamber have been seted up along length direction in valve body (1), the gliding case (2) of valve body (1) length direction can be followed to the case intracavity, and pressure regulating spring (4) on case (2) are equipped with the top in the spring chamber, valve body (1) is close to the one end in case chamber and opens inlet (3) that have and communicate with the case chamber, open the side in case chamber has liquid outlet (6), open on case (2) and have the orifice that communicates inlet (3) and spring chamber, the area that case (2) are close to inlet (3) one end is greater than the area that is close to spring chamber one end.
2. The differential high flow mining safety valve of claim 1, characterized in that: a threaded hole is formed in the liquid inlet (3), and a liquid inlet pipe joint (7) is connected in the threaded hole.
3. The differential high flow mining safety valve of claim 2, characterized in that: the end part of the liquid inlet pipe joint (7) is fixedly connected with a sleeve extending into the valve core cavity, and the end part of the valve core (2) is propped against the sleeve.
4. The differential high flow mining safety valve of claim 1, characterized in that: the liquid outlet (6) is provided with a plurality of and arrange along valve body (1) circumference.
5. The differential high flow mining safety valve of claim 1, characterized in that: the diameter of the spring cavity is larger than that of the valve core cavity, a spring cap (8) located between the pressure regulating spring (4) and the valve core (2) is installed in the spring cavity, a bulge which is pushed against the throttling hole is arranged on the spring cap (8), and a through hole which is communicated with the spring cavity and the throttling hole is formed in the bulge.
6. The differential high flow mining safety valve of claim 1, characterized in that: one end of the valve body (1) far away from the liquid inlet (3) is provided with a threaded hole, a pressure regulating screw (5) is connected in the threaded hole, and one end of the pressure regulating spring (4) far away from the valve core (2) is supported on the pressure regulating screw (5).
7. The differential high flow mining safety valve of claim 6, wherein: and a positioning boss extending into the inner ring of the pressure regulating spring (4) is fixedly connected to the pressure regulating screw (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121554645.1U CN215110749U (en) | 2021-07-09 | 2021-07-09 | Differential large-flow mining safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121554645.1U CN215110749U (en) | 2021-07-09 | 2021-07-09 | Differential large-flow mining safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215110749U true CN215110749U (en) | 2021-12-10 |
Family
ID=79313014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121554645.1U Active CN215110749U (en) | 2021-07-09 | 2021-07-09 | Differential large-flow mining safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215110749U (en) |
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2021
- 2021-07-09 CN CN202121554645.1U patent/CN215110749U/en active Active
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