CN218063573U - Externally-mounted safety valve - Google Patents
Externally-mounted safety valve Download PDFInfo
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- CN218063573U CN218063573U CN202222653487.6U CN202222653487U CN218063573U CN 218063573 U CN218063573 U CN 218063573U CN 202222653487 U CN202222653487 U CN 202222653487U CN 218063573 U CN218063573 U CN 218063573U
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Abstract
The invention provides an externally-mounted safety valve, which comprises a valve body and a valve core arranged in the valve body, wherein the valve body comprises a valve seat and an adapter on the valve seat, and the inner cavity of the adapter is communicated with the inner cavity of the valve seat; the adapter comprises a main body which is 90 degrees, one end of the main body is provided with a joint part, and the other end of the main body is provided with a screwing part; a sealing gasket is arranged at the lower side of the screwing part and sleeved on the valve seat; the valve core is arranged in the inner cavity of the valve seat, a spring is arranged between the valve core and the bottom of the valve seat, and a limiting piece is arranged on the side, close to the opening, of the valve seat to prevent the valve core from falling off; the side wall of the valve core is provided with a plurality of liquid passing holes, the side wall of the valve core is symmetrically provided with two sliding chutes, and the limiting parts sequentially penetrate through the two sliding chutes. The valve core is cylindrical, the opening end of the valve core extends into the valve seat, one end of the base of the valve core is exposed out of the valve seat, and the base is provided with a throttling hole. The safety valve effectively solves the problems that the safety valve occupies too large space after being installed and is easy to collide, and time and labor are saved in installation and disassembly.
Description
Technical Field
The invention belongs to the field of safety valves, and particularly relates to an externally-mounted safety valve.
Background
The forklift lifting mechanism is usually controlled by a hydraulic system, because of lifting actions such as loading, unloading, stacking and the like of the forklift, the stress is large in the operation process, the pressure of the hydraulic system is large, an oil pipe of the hydraulic system can burst due to external factors or faults of the forklift, once a high-pressure oil pipe or a connector in an oil circuit bursts, the flow of an oil outlet pipeline at an oil pump is instantly increased, and an expansion rod of an oil cylinder rapidly descends, so that the descending speed of a forklift gantry is very high, namely the descending speed of a load is very high, and accidents are easily caused. But receive the structure design limitation, when being in the hydraulic fluid port with relief valve lug connection under some operating modes, because relief valve and hydro-cylinder or pipeline are the vertical state, increased the space and taken up, the relief valve receives to collide with easily, has the damage risk, consequently, is necessary to improve relief valve structure.
Disclosure of Invention
In view of the above, the present invention provides an externally installed safety valve to overcome the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an externally-mounted safety valve comprises a valve body and a valve core arranged in the valve body, wherein the valve body comprises a valve seat and an adapter seat on the valve seat, and an inner cavity of the adapter seat is communicated with an inner cavity of the valve seat;
the adapter comprises a main body which is 90 degrees, one end of the main body is provided with a joint part, and the other end of the main body is provided with a screwing part; a sealing gasket is arranged at the lower side of the screwing part and sleeved on the valve seat;
the valve core is arranged in the inner cavity of the valve seat, a spring is arranged between the valve core and the bottom of the valve seat, and a limiting piece is arranged on the side, close to the opening, of the valve seat to prevent the valve core from falling off; the side wall of the valve core is provided with a plurality of liquid passing holes, the side wall of the valve core is symmetrically provided with two sliding chutes, and the limiting parts sequentially penetrate through the two sliding chutes;
the valve seat is provided with a connecting structure; the valve core is cylindrical, the opening end of the valve core extends into the valve seat, one end of the base of the valve core is exposed out of the valve seat, the base is provided with a throttling hole, the outer edge of the base is provided with a conical matching part, and the end face of the opening side of the valve seat is provided with a conical surface matched with the conical matching part.
Furthermore, a positioning table is arranged in the inner cavity of the valve seat, one end of the spring is abutted against the positioning table, and the other end of the spring is abutted against the valve core.
Furthermore, the sliding groove is a long groove arranged along the axial direction of the valve core, and when a medium flows in from one side of the joint part of the adapter, the medium can sequentially pass through the inner cavity of the adapter and the inner cavity of the valve seat and is discharged through the long groove and the liquid passing hole.
Further, the valve seat and the adapter are of an integrated structure.
Further, the screwing part comprises an outer hexagonal nut structure.
Further, the joint part is provided with an external thread structure.
Further, the connecting structure comprises an external thread arranged on the outer side of the valve seat.
Compared with the prior art, the invention has the following advantages:
according to the invention, the adapter is arranged on the valve seat, so that the problems that the safety valve occupies too large space after being installed and is easy to collide are effectively solved, and the safety valve can be very conveniently screwed by means of a tool due to the fact that the screwing part is arranged at one end of the adapter main body, so that the installation and the disassembly are realized, and time and labor are saved. In the application process, once the conditions of oil pipe burst and the like occur in a hydraulic system of the forklift, the valve core is attached to the valve seat, oil only passes through the safety valve through the valve core throttling hole, the load descending speed can be effectively controlled, safety accidents are avoided, the reliability of the hydraulic system is effectively improved, and the use safety of equipment is guaranteed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:
FIG. 1 is an outline view of the invention;
FIG. 2 is a structural sectional view of the invention;
FIG. 3 is a schematic view of the valve element and valve seat in a closed state;
fig. 4 is a schematic view of a valve seat portion in the invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail below with reference to the drawings and embodiments.
An externally-mounted safety valve is shown in figures 1 to 4 and comprises a valve body 1 and a valve core 2 arranged in the valve body, wherein the valve body comprises a valve seat 3 and an adapter seat on the valve seat 4, and the inner cavity of the adapter seat is communicated with the inner cavity of the valve seat and serves as a medium flowing channel. The adapter comprises a main body which is 90 degrees, one end of the main body is provided with a joint part 5, and the other end of the main body is provided with a screwing part 6; the lower side of the screwing part is provided with a sealing gasket 7 which is sleeved on the valve seat, generally, the sealing gasket is made of a rubber gasket, after the valve seat is inserted into the mounting hole, the valve seat is screwed in and mounted in place by the screwing part (screwing by means of a tool), the mounting and dismounting are very convenient, and time and labor are saved.
The valve core is arranged in an inner cavity of the valve seat, a spring 8 is arranged between the valve core and the bottom of the valve seat, and a limiting piece 9 is arranged on the side, close to the opening, of the valve seat to prevent the valve core from falling off; and a positioning table 16 is arranged in the inner cavity of the valve seat, one end of the spring is propped against the positioning table, and the other end of the spring is propped against the valve core. The side wall of the valve core is provided with a plurality of liquid passing holes 10, the side wall of the valve core is symmetrically provided with two sliding grooves 11, the limiting parts sequentially penetrate through the two sliding grooves, and the sliding grooves are elongated grooves which are axially arranged along the valve core.
The valve seat is provided with a connecting structure 12, the valve core is cylindrical, one end of an opening of the valve core extends into the valve seat, one end of a base of the valve core is exposed out of the valve seat, a throttling hole 13 is formed in the base, the outer edge of the base is provided with a conical matching part 14, and the tail end of the opening side of the valve seat is provided with a conical surface 15 matched with the conical matching part. The valve core is under the elastic action force of the spring, namely, the valve core is supported by the spring, when oil flows in from one side of the adapter, the limiting piece is abutted against the tail end of the sliding groove, at the moment, the part of the valve core extending out of the valve seat reaches the maximum length, the valve core keeps balance, and a medium is discharged from the liquid passing hole, the sliding groove and the throttling hole simultaneously. When the oil flows reversely, the oil can enter from one side of the opening end of the valve seat, the valve core is pushed by the oil pressure to retract into the inner cavity of the valve seat, the conical matching part of the valve core is matched with the conical surface at the opening of the valve seat, so that the valve core is sealed with the valve seat, the oil can only enter from the throttling hole, the blocking effect is achieved, and the oil is only slowly released from the throttling hole.
The screwing part comprises an outer hexagon nut structure, the joint part is provided with an external thread structure, and the connecting structure comprises an external thread arranged outside the valve seat. During production and processing, the valve seat and the adapter can be processed respectively, and then welded and fixed, and a nut is welded at the joint of the valve seat and the adapter to serve as a screwing part structure. In order to simplify the process and improve the product quality, in an optional embodiment, the valve seat and the adapter are of an integrated structure, so that the quality problem caused by welding is avoided, welding deformation and size errors do not exist, the product precision is higher, and the quality is better. It should be noted that the screw part may also be in other structures, as long as it is convenient to screw and install the safety valve.
According to the invention, the adapter is arranged on the valve seat, so that the problems that the safety valve occupies too large space after being installed and is easy to collide are effectively solved, and the safety valve can be very conveniently screwed by means of a tool due to the fact that the screwing part is arranged at one end of the main body of the adapter, so that the installation and the disassembly are realized, and time and labor are saved. In the application process, once the conditions such as oil pipe burst appear in the hydraulic system of the forklift, the flow in the oil path is suddenly increased, the oil liquid can push the valve element to retract into the valve seat, so that the valve element and the valve seat are closed, the oil liquid only passes through the safety valve through the valve element throttling hole, the flow can be rapidly reduced, the load descending speed is effectively controlled, the safety accident is avoided, the reliability of the hydraulic system is effectively improved, and the use safety of equipment is guaranteed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. An externally-mounted safety valve, characterized in that: the valve comprises a valve body and a valve core arranged in the valve body, wherein the valve body comprises a valve seat and an adapter on the valve seat, and an inner cavity of the adapter is communicated with an inner cavity of the valve seat;
the adapter comprises a main body which is 90 degrees, one end of the main body is provided with a joint part, and the other end of the main body is provided with a screwing part; a sealing gasket is arranged at the lower side of the screwing part and sleeved on the valve seat;
the valve core is arranged in the inner cavity of the valve seat, a spring is arranged between the valve core and the bottom of the valve seat, and a limiting piece is arranged on the side, close to the opening, of the valve seat to prevent the valve core from falling off; the side wall of the valve core is provided with a plurality of liquid passing holes, the side wall of the valve core is symmetrically provided with two sliding chutes, and the limiting parts sequentially penetrate through the two sliding chutes;
the valve seat is provided with a connecting structure; the valve core is cylindrical, the opening end of the valve core extends into the valve seat, one end of the base of the valve core is exposed out of the valve seat, a throttling hole is formed in the base, a conical matching portion is arranged on the outer edge of the base, and a conical surface matched with the conical matching portion is arranged on the end face of the opening side of the valve seat.
2. The externally-mounted safety valve according to claim 1, wherein: and a positioning table is arranged in the inner cavity of the valve seat, one end of the spring is propped against the positioning table, and the other end of the spring is propped against the valve core.
3. The externally-mounted safety valve according to claim 1, wherein: the sliding groove is a long groove which is axially arranged along the valve core.
4. The externally-mounted safety valve according to claim 1, wherein: the valve seat and the adapter are of an integrated structure.
5. The externally-mounted safety valve of claim 1, wherein: the screwing part comprises an outer hexagonal nut structure.
6. The externally-mounted safety valve of claim 1, wherein: the joint part is provided with an external thread structure.
7. The externally-mounted safety valve of claim 1, wherein: the connecting structure comprises an external thread arranged on the outer side of the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222653487.6U CN218063573U (en) | 2022-09-30 | 2022-09-30 | Externally-mounted safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222653487.6U CN218063573U (en) | 2022-09-30 | 2022-09-30 | Externally-mounted safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218063573U true CN218063573U (en) | 2022-12-16 |
Family
ID=84411530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222653487.6U Active CN218063573U (en) | 2022-09-30 | 2022-09-30 | Externally-mounted safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218063573U (en) |
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2022
- 2022-09-30 CN CN202222653487.6U patent/CN218063573U/en active Active
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