阅读说明：本技术 一种可复位弹簧式爆破安全阀 (Spring blasting relief valve can reset ) 是由 苟娥 于 2020-05-12 设计创作，主要内容包括：本发明公开了一种可复位弹簧式爆破安全阀,包括阀体、阀座以及用于活动密封阀座内部流道的阀芯,阀体上连接有安装套,安装套内设置有调节螺套、复位螺杆、载荷弹簧和限位座,限位座位于安装套内,限位座一侧与阀芯连接,载荷弹簧安装在调节螺套与限位座之间,限位座上端面加工有滑孔,限位座的侧壁上加工有与滑孔连通的穿孔,穿孔内设置有复位块,复位螺杆上部与调节螺套螺纹配合,复位螺杆的下端穿入至滑孔内,所述安装套上安装有限位组件。本发明具有一旦出现超载情况,可保证阀芯与载荷弹簧呈爆破锁死状态,不会使阀芯在载荷弹簧作用下来回窜动并持续承受超载冲击,从而来保证阀芯与载荷弹簧的性能和寿命保持一个较好的状态。(The invention discloses a resettable spring type blasting safety valve which comprises a valve body, a valve seat and a valve core, wherein the valve core is used for movably sealing a flow passage in the valve seat, the valve body is connected with an installation sleeve, an adjusting threaded sleeve, a resetting screw rod, a load spring and a limiting seat are arranged in the installation sleeve, the limiting seat is positioned in the installation sleeve, one side of the limiting seat is connected with the valve core, the load spring is arranged between the adjusting threaded sleeve and the limiting seat, a sliding hole is formed in the upper end face of the limiting seat, a through hole communicated with the sliding hole is formed in the side wall of the limiting seat, a resetting block is arranged in the through hole, the upper portion of the resetting screw rod is in threaded fit with the adjusting threaded sleeve, the lower. The invention can ensure that the valve core and the load spring are in a blasting locking state once the overload condition occurs, and the valve core can not move back and forth under the action of the load spring and continuously bear overload impact, thereby ensuring that the performance and the service life of the valve core and the load spring are kept in a better state.)

1. The utility model provides a but reset spring formula blasting relief valve which characterized in that: the valve comprises a valve body, a valve seat arranged in the valve body and a valve core used for movably sealing a flow passage in the valve seat, wherein the valve body is connected with an installation sleeve, a spring type blasting control mechanism connected with the valve core is arranged in the installation sleeve, the spring type blasting control mechanism comprises an adjusting threaded sleeve, a reset screw, a load spring and a limiting seat, the adjusting threaded sleeve is screwed at a port at one end of the installation sleeve, which is far away from one end of the valve body, the limiting seat is slidably arranged in the installation sleeve, one side of the limiting seat is connected with one side of the valve core, which is far away from the valve seat, the load spring is arranged between the adjusting threaded sleeve and the limiting seat, a sliding hole is processed on the end surface, which is far away from the valve core, of the limiting seat, at least one through hole communicated with the sliding hole is processed on the side wall of the limiting seat, a slidable reset block is, install the spacing subassembly of multiunit that equals with perforation quantity on the installation cover, every spacing subassembly of group is installed respectively on the installation cover lateral wall that single perforation corresponds, and spacing subassembly includes spacing cap, spacing spring and stopper, spacing cap detachably installs on the lateral wall of installation cover, and spacing spring mounting is between spacing cap and stopper, and the stopper penetrates to in the inner chamber of installation cover and can stretch into to single corresponding perforation.

2. The resettable spring-type burst safety valve of claim 1, wherein: the shaping has the mount table on the lateral wall of installing sleeve, mount table lateral wall processing has a plurality of through-holes all with the installing sleeve inner chamber intercommunication, the quantity and the fenestrate quantity of through-hole equal, the position of single through-hole and single fenestrate position one-to-one, and single through-hole can with the single coaxial intercommunication of perforating of department of correspondence, the spacing subassembly of every group is installed respectively on the mount table that corresponds the single through-hole outside, the mount table department of perforating one end is kept away from at the through-hole to spacing cap detachably among the spacing subassembly, and stopper slidable ground among the spacing subassembly sets up in single through-hole.

3. The resettable spring-type burst safety valve of claim 2, wherein: the through hole is the same as the diameter of the through hole, the limiting block and the reset block are both circular in longitudinal section, and the circular diameter is matched with the diameter of the through hole.

4. A resettable spring-type burst safety valve as claimed in claim 1 or claim 3, wherein: the length of reset block equals with fenestrate length, stopper and reset block are close to the one end terminal surface in slide opening and are evagination and glossy circular arc surface.

5. The resettable spring-type burst safety valve of claim 4, wherein: the middle part of the sliding hole is communicated with the through hole, the outer diameter size of the reset screw is matched with the aperture size of the sliding hole, and the lower end of the reset screw is in a convex arc shape or a conical shape.

6. The resettable spring-type burst safety valve of claim 1, wherein: the inner chamber upper portion of installing sleeve is provided with the spring holder, and spring holder one side stretches into one side detachable ground fixed connection to the installing sleeve with adjusting the swivel nut, and the shaping of spring holder one side has the spacing platform of first spring, spacing seat is close to one side shaping of adjusting the swivel nut and has the spacing platform of second spring, load spring fixes between the spacing platform of first spring and the spacing platform of second spring, reset screw one end passes in proper order and adjusts swivel nut, spring holder, the spacing platform of first spring, load spring hole, the spacing platform of second spring and penetrates to the slide opening of spacing seat in.

7. A resettable spring-type burst safety valve as claimed in claim 1 or claim 6, wherein: the valve core is far away from the one end shaping of disk seat internal flow way and has the connecting card, and the connecting card is close to one side terminal surface processing of spacing seat and has the card hole, spacing seat is close to one side shaping of connecting card and has the card post that can stretch into to the card downthehole.

8. The resettable spring-type burst safety valve of claim 1, wherein: through threaded connection between valve body and the installation cover, valve body one side processing has the mounting hole with installation cover inner chamber intercommunication, the disk seat is installed in the mounting hole of valve body, and the inside runner of disk seat includes shutoff runner, discharge flow channel and the at least entering runner of mutual intercommunication, the case is located the mounting hole of valve body, and the case is kept away from the one end of connecting card and is stretched into the shutoff runner of disk seat and be used for the sealed shutoff runner of activity, discharge flow channel and get into the intersection between the runner, one side processing has the load entry that communicates with the entering runner on the valve body, and the load entrance is connected with the load import and connects, the shutoff runner of disk seat and the mounting hole of valve body keep away from one side intercommunication of case, one side port department that the case was kept away from to the mounting hole is connected.

9. The resettable spring-type burst safety valve of claim 8, wherein: one end of the unloading outlet connector is connected with the valve body part at the port of the mounting hole through threads, a movable buffer block is arranged in an inner hole at one side of the unloading outlet connector close to the valve seat, an overflowing gap is formed between the side wall of the buffer block and the inner hole wall of the unloading outlet connector, and a buffer sink groove is machined in the side wall of the buffer block close to one side of the valve seat discharge flow channel.

10. The resettable spring-type burst safety valve of claim 9, wherein: and a metal sealing ring is arranged between the unloading outlet joint and the valve seat.

Technical Field

The invention relates to the technical field of safety valves, in particular to the technical field of safe operation of high-pressure fluid equipment, and more particularly relates to a resettable spring type blasting safety valve.

Background

At present, in the technical field of safety valves, in particular to a safety valve of high-pressure fluid equipment such as water jet or air flow, etc., once the fluid pressure is overloaded, the corresponding components in the valve body, especially a valve core and a spring, are greatly impacted and damaged, the reason for this is that the fluid pressure is overloaded or after being overloaded, and the overloaded pressure value cannot be kept to a certain range, the valve core can be caused to move back and forth under the action of the fluid pressure and the spring elasticity, not only can the plugging end of the valve core bear continuous overload impact, but also can greatly influence the performance of the spring, and the phenomenon that the follow-up pressure control accuracy is unreliable or greatly reduced can be caused.

Disclosure of Invention

The invention aims to provide a spring-resettable blasting safety valve which can ensure that a valve core and a load spring are in a blasting locking state once an overload condition occurs, and the valve core cannot move back and forth under the action of the load spring and continuously bear overload impact, so that the performance and the service life of the valve core and the load spring are ensured to be kept in a better state.

The purpose of the invention is realized by the following technical scheme: a resettable spring type blasting safety valve comprises a valve body, a valve seat arranged in the valve body and a valve core used for movably sealing an internal flow passage of the valve seat, wherein the valve body is connected with an installation sleeve, a spring type blasting control mechanism connected with the valve core is arranged in the installation sleeve, the spring type blasting control mechanism comprises an adjusting threaded sleeve, a resetting screw rod, a load spring and a limiting seat, the adjusting threaded sleeve is screwed at a port of one end, far away from the valve body, of the installation sleeve, the limiting seat is slidably arranged in the installation sleeve, one side of the limiting seat is connected with one side, far away from the valve seat, of the valve core, the load spring is arranged between the adjusting threaded sleeve and the limiting seat, a sliding hole is processed on the end face, far away from the valve core, of the limiting seat, at least one through hole communicated with the sliding hole is processed on the side wall of the limiting seat, a slidable, the lower extreme of screw rod that resets penetrates to the slide opening in, install the spacing subassembly of multiunit that equals with perforation quantity on the installation cover, the spacing subassembly of every group is installed respectively on the installation cover lateral wall that single perforation corresponds, and spacing subassembly includes spacing cap, spacing spring and stopper, spacing cap detachably installs on the lateral wall of installation cover, and spacing spring installs between spacing cap and stopper, and the stopper penetrates to the installation cover in the inner chamber and can stretch into to single corresponding perforation.

Further, the shaping has the mount table on the lateral wall of installing sleeve, the processing of mount table lateral wall has a plurality of through-holes all with the installing sleeve inner chamber intercommunication, the quantity of through-hole equals with fenestrate quantity, the position of single through-hole and single fenestrate position one-to-one, and single through-hole can with the coaxial intercommunication of single perforation of department of correspondence, the spacing subassembly of every group is installed respectively on the mount table that corresponds the single through-hole outside, spacing cap among the spacing subassembly is connected detachably in the through-hole and is kept away from the mount table department of perforation one end, and stopper slidable ground among the spacing subassembly sets up in single through-hole.

Furthermore, the diameter size of the through hole is the same as that of the through hole, the longitudinal section shapes of the limiting block and the reset block are both circular, and the diameter size of the circular shape is matched with that of the through hole.

Furthermore, the length of the reset block is equal to that of the through hole, and the end faces of the limiting block and the reset block, which are close to the sliding hole, are convex and smooth arc surfaces.

Furthermore, the middle part of the sliding hole is communicated with the through hole, the outer diameter size of the reset screw is matched with the aperture size of the sliding hole, and the lower end of the reset screw is in a convex arc shape or a conical shape.

Further, the inner chamber upper portion of installing sleeve is provided with the spring holder, and spring holder one side and regulation swivel nut stretch into to the detachable ground fixed connection in one side of installing sleeve, and the shaping of spring holder one side has the spacing platform of first spring, spacing seat is close to the one side shaping of adjusting the swivel nut and has the spacing platform of second spring, load spring fixes between the spacing platform of first spring and the spacing platform of second spring, reset screw one end passes regulation swivel nut, spring holder, the spacing platform of first spring, load spring hole, the spacing platform of second spring in proper order and penetrates to the slide opening of spacing seat in.

Furthermore, a connecting clamp is formed at one end, away from the valve seat internal flow passage, of the valve core, a clamping hole is formed in the end face, close to the limiting seat, of one side of the connecting clamp, and a clamping column body capable of extending into the clamping hole is formed in one side, close to the connecting clamp, of the limiting seat.

Further, through threaded connection between valve body and the installation cover, valve body one side processing has the mounting hole with installation cover inner chamber intercommunication, the disk seat is installed in the mounting hole of valve body, and the inside runner of disk seat includes the shutoff runner of mutual intercommunication, discharge flow channel and at least one entering runner, the case is located the mounting hole of valve body, and the case is kept away from the one end of connecting the card and is stretched into the shutoff runner of disk seat and be used for the crossing between activity seal shutoff runner, discharge flow channel and the entering runner, one side processing has the load entry that communicates with the entering runner on the valve body, and the load entrance is connected with the load access connection, the shutoff runner of disk seat and the mounting hole of valve body keep away from one side intercommunication of case, the one side port department that the case was kept away from to the mounting hole is connected with the off.

Furthermore, one end of the unloading outlet connector is connected with the valve body part at the port of the mounting hole through threads, a movable buffer block is arranged in an inner hole at one side of the unloading outlet connector close to the valve seat, an overflowing gap is formed between the side wall of the buffer block and the inner hole wall of the unloading outlet connector, and a buffer sink groove is machined in the side wall of the buffer block at one side close to the valve seat discharge flow channel.

Furthermore, a metal sealing ring is arranged between the unloading outlet joint and the valve seat.

The explosion safety valve provided by the embodiment of the invention can enable the valve core to explode and bounce and present an open state under the condition that the fluid pressure is overloaded by arranging the spring type explosion control mechanism, and at the moment, the load spring also presents a locked state without causing continuous elastic action on the valve core, so that the overloaded fluid cannot cause continuous overload impact on the valve core, thereby ensuring that the performance and the service life of the valve core and the load spring are kept in a better state, and avoiding the phenomenon that the subsequent pressure control precision is unreliable because the valve core and the load spring bear overlarge load due to the back-and-forth movement of the valve core; in addition, the blasting safety valve provided by the embodiment of the invention has the functions of load control and blasting unloading, and also has the reset function, so that the overall performance is more comprehensive, the safety and the reliability are higher, the operation is simple and convenient, and the failure rate of the blasting safety valve can be greatly reduced.

Drawings

Fig. 1 is a schematic structural diagram of a safety explosion valve according to an embodiment of the present invention;

fig. 2 is a schematic diagram of the internal structure of the safety valve in a loaded/reset state according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an internal structure of a burst safety valve in a burst state according to an embodiment of the present invention.

The labels in the figure are: 1-a valve body; 2, mounting a sleeve; 3-load inlet joint; 4-an unloading outlet joint; 5-adjusting the threaded sleeve; 6-resetting the screw rod; 7-a limiting component; 8-spring seats; 9-a right reset block; 10-a load spring; 11-a mounting table; 12-a left reset block; 13-a buffer block; 14-a limiting seat; 15-a valve core; 16-a valve seat; 17-a slide hole; 18-perforating; 19-a through hole; 20-metal sealing ring; 21-mounting holes; 71-a limit cap; 72-a limit spring; 73-a limiting block; 81-a first spring limit table; 131-a buffer sink; 141-card cylinder; 142-a second spring limit station; 151-connection card; 161-blocking the flow channel; 162-an inlet flow channel; 163-discharge flow channel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The terms "substantially", "essentially", and the like are intended to indicate that the relative terms are not required to be absolutely exact, but may have some deviation. For example, "substantially parallel" does not merely mean absolute parallelism, and there is generally a certain deviation because absolute parallelism is difficult to achieve in actual production and operation. Therefore, "substantially parallel" includes the case where there is a certain deviation as described above, in addition to the absolute parallel.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.