CN217898997U

CN217898997U - Safety valve preventing automatic opening

Info

Publication number: CN217898997U
Application number: CN202221347129.6U
Authority: CN
Inventors: 刘长虹
Original assignee: Tianjin Changhui Innovation Electrical Equipment Technology Co ltd
Current assignee: Tianjin Changhui Innovation Electrical Equipment Technology Co ltd
Priority date: 2022-05-22
Filing date: 2022-05-22
Publication date: 2022-11-25
Anticipated expiration: 2032-05-22

Abstract

The utility model relates to a safety valve preventing automatic opening, which is arranged on a tank body and comprises an emptying valve, a discharge valve, a linkage mechanism and a locking mechanism, wherein the emptying valve is provided with an opening handle for opening and closing the emptying valve; a rotary hand wheel for opening and closing the discharge valve is arranged on the discharge valve, and a first locking tooth is arranged on the outer side of the rotary hand wheel; the linkage mechanism comprises a transmission assembly, a connecting rod assembly, a rotating shaft and a cam, wherein one end of the connecting rod assembly, which is far away from the transmission assembly, is movably connected with an opening handle of the emptying valve; the locking mechanism comprises a sliding rod connected with the tank body, a locking plate arranged on the sliding rod in a sliding mode, a limiting plate arranged at the end portion of the sliding rod and a compression spring sleeved on the outer side of the sliding rod, one side of the locking plate abuts against the outer peripheral side of the cam, and the other end of the locking plate is provided with a second locking tooth.

Description

Safety valve capable of preventing automatic opening

Technical Field

The utility model relates to a technical field of valve especially relates to a prevent automatic safety valve who opens.

Background

The discharge valve of the tank car is used for discharging the tank body, before discharging, the emptying valve at the top of the tank body needs to be opened, otherwise, the air pressure in the tank body is reduced in the discharging process, so that the tank body is deformed by external atmospheric pressure, and certain potential safety hazards exist. At present, when the tank car is unloaded, the situation that the emptying valve is forgotten to be opened is inevitable, so that safety accidents are caused, and the use reliability is low.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides a prevent automatic safety valve who opens, this prevent automatic safety valve who opens just can carry out opening of discharge valve after opening the blowoff valve, fundamentally has solved to forget and has opened the condition that the blowoff valve carries out the unloading, improves security and use reliability.

(II) technical scheme

In order to achieve the above object, the embodiment of the present application provides an automatic opening prevention safety valve, which is arranged on a tank body; the safety valve for preventing automatic opening includes: the emptying valve is arranged at the top of the tank body, and an opening handle for opening and closing the emptying valve is arranged on the emptying valve; the discharge valve is arranged at the bottom of one side of the tank body, a rotating hand wheel for opening and closing the discharge valve is arranged on the discharge valve, and first locking teeth are arranged on the outer side of the rotating hand wheel; the linkage mechanism is arranged on the tank body and comprises a transmission assembly, a connecting rod assembly connected with the input end of the transmission assembly and a rotating shaft connected with the output end of the transmission assembly, one end, far away from the transmission assembly, of the connecting rod assembly is movably connected with the opening handle of the emptying valve, and a cam is arranged at one end, far away from the transmission assembly, of the rotating shaft; and the locking mechanism is arranged on the tank body and is adjacent to the discharge valve, the locking mechanism comprises a sliding rod connected with the tank body, a locking plate arranged on the sliding rod in a sliding manner, a limiting plate arranged at the end part of the sliding rod and a pressure spring sleeved on the outer side of the sliding rod, two ends of the pressure spring are respectively connected with the locking plate and the limiting plate, one side of the locking plate is abutted against the outer peripheral side of the cam, and the other end of the locking plate is provided with a second locking tooth for being locked by a second locking tooth of occlusion.

In one possible implementation, the transmission assembly includes: the box body is provided with a cavity, a first through hole and a second through hole which are communicated with the cavity, and a sliding rail in the horizontal direction is arranged in the cavity; the rack is arranged on the sliding rail in the cavity in a sliding manner; and a gear; the gear is rotatably arranged in the cavity and meshed with the rack; the end part of the connecting rod assembly penetrates through the first through hole and is connected with the rack, and the end part of the rotating shaft penetrates through the second through hole and is coaxially connected with the gear.

In one possible implementation, the connecting rod assembly includes: the guide sleeve is arranged at the top of the tank body; the guide rod penetrates through the guide sleeve, and one end of the guide rod penetrates through the first through hole and is connected with the rack; and one end of the hinged plate is hinged with one end of the guide rod, which is far away from the rack, and the other end of the hinged plate is hinged with the opening handle.

In a possible implementation, when the opening handle of the evacuation valve is in an open state, the second locking tooth of the limiting plate is separated from the first locking tooth; when the opening handle of the emptying valve is in a closed state, the second locking teeth of the limiting plate are meshed with the first locking teeth.

In a possible implementation manner, the linkage mechanism further comprises a bearing seat arranged on one side of the tank body, and the rotating shaft penetrates through the bearing seat and is in interference fit with a bearing inner ring in the bearing seat.

(III) advantageous effects

Compared with the prior art, the utility model provides a prevent safety valve who opens automatically possesses following beneficial effect: the safety valve capable of preventing automatic opening is characterized in that second locking teeth of a locking plate are meshed with first locking teeth on the outer peripheral side of a rotary hand wheel, so that a discharging valve is prevented from being opened, only after an opening handle of the discharging valve is opened, the opening handle drives a rotating shaft to rotate through a connecting rod assembly and a transmission assembly, the rotating shaft drives a cam to rotate by a certain angle, the locking plate slides along a sliding rod under the supporting effect of a compression spring, so that the second locking teeth of the locking plate are separated from the first locking teeth on the outer peripheral side of the rotary hand wheel, the rotary hand wheel of the discharging valve can be rotated at the moment, the discharging valve can be opened only after the discharging valve is opened, the problem that the discharging valve is forgotten to be opened to discharge is solved fundamentally, and safety and use reliability are improved.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic view of a part a of the present invention shown in fig. 1;

fig. 3 is a schematic front view of the present invention;

fig. 4 is a schematic perspective view of the linkage mechanism of the present invention;

FIG. 5 is a schematic view of the cross-sectional structure of the transmission assembly, the guide rod and the rotating shaft of the present invention

In the drawings, the reference numbers:

1. a tank body; 2. an evacuation valve; 21. opening the handle; 3. a discharge valve; 31. rotating a hand wheel; 311. a first locking tooth;

4. a linkage mechanism; 41. a transmission assembly; 411. a box body; 412. a slide rail; 413. a rack; 414. a gear; 42. a connecting rod assembly; 421. a guide sleeve; 422. a guide bar; 423. a hinge plate; 43. a rotating shaft; 44. a cam; 45. a bearing seat;

5. a locking mechanism; 51. a slide bar; 52. a locking plate; 521. a second locking tooth; 53. a limiting plate; 54. the spring is compressed.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the embodiment of the present application provides a safety valve for preventing automatic opening, which is disposed on a tank body 1; the safety valve for preventing automatic opening includes: an emptying valve 2, a discharge valve 3 linkage mechanism 4 and a locking mechanism 5.

The emptying valve 2 is arranged at the top of the tank body 1, and an opening handle 21 for opening and closing the emptying valve 2 is arranged on the emptying valve 2.

The discharge valve 3 is arranged at the bottom of one side of the tank body 1, a rotary hand wheel 31 for opening and closing the discharge valve 3 is arranged on the discharge valve 3, and first locking teeth 311 are arranged on the outer side of the rotary hand wheel 31.

The linkage mechanism 4 is arranged on the tank body 1, the linkage mechanism 4 comprises a transmission assembly 41, a connecting rod assembly 42 connected with the input end of the transmission assembly 41 and a rotating shaft 43 connected with the output end of the transmission assembly 41, one end, far away from the transmission assembly 41, of the connecting rod assembly 42 is movably connected with the opening handle 21 of the exhaust valve 2, and one end, far away from the transmission assembly 41, of the rotating shaft 43 is provided with a cam 44.

The locking mechanism 5 is arranged on the tank body 1 and is adjacent to the discharge valve 3, the locking mechanism 5 comprises a sliding rod 51 connected with the tank body 1, a locking plate 52 arranged on the sliding rod 51 in a sliding manner, a limiting plate 53 arranged at the end part of the sliding rod 51 and a pressing spring 54 sleeved outside the sliding rod 51, two ends of the pressing spring 54 are respectively connected with the locking plate 52 and the limiting plate 53, one side of the locking plate 52 abuts against the outer peripheral side of the cam 44, and the other end of the locking plate is provided with a second locking tooth 521 for engaging with the second locking tooth 521.

In this application, second locking tooth 521 through the locking plate 52 and the interlock of the first locking tooth 311 of rotatory hand wheel 31 periphery side, thereby prevent that discharge valve 3 from opening, only open behind the handle 21 of blowoff valve 2, open handle 21 and drive assembly 41 drive pivot 43 through link assembly 42 and rotation, pivot 43 drives cam 44 and rotates certain angle, locking plate 52 slides along slide bar 51 under compression spring 54's supporting role, make the separation of the first locking tooth 311 of second locking tooth 521 of locking plate 52 and rotatory hand wheel 31 periphery side, can rotate discharge valve 3's rotatory hand wheel 31 this moment, only just can carry out opening of discharge valve 3 after opening blowoff valve 2, fundamentally has solved and has forgotten to open the condition that the blowoff valve 2 unloaded, improve security and use reliability.

In some embodiments, drive assembly 41 includes: a case 411, a rack 413, and a gear 414.

The box 411 has a cavity, and a first through hole and a second through hole communicated with the cavity, and a slide rail 412 in a horizontal direction is disposed inside the cavity.

The rack 413 is slidably disposed on the sliding rail 412 in the cavity.

The gear 414 is rotatably disposed in the cavity, and the gear 414 is engaged with the rack 413.

The end of the link assembly 42 passes through the first through hole and is connected to the rack 413, and the end of the rotating shaft 43 passes through the second through hole and is coaxially connected to the gear 414.

In this application, the opening handle 21 drives the rack 413 to slide along the sliding rail 412 through the connecting rod assembly 42, drives the gear 414 to rotate through the meshing of the rack 413 and the gear 414, and the gear 414 drives the rotating shaft 43 to rotate by a certain angle, so that the locking plate 52 is controlled to move, and the rotating hand wheel 31 is locked or unlocked.

Further, the connecting rod assembly 42 includes: a guide sleeve 421, a guide rod 422, and a hinge plate 423.

The guide sleeve 421 is arranged on the top of the tank body 1.

The guide rod 422 penetrates the guide sleeve 421, and one end of the guide rod 422 passes through the first through hole and is connected with the rack 413.

The hinge plate 423 is hinged at one end thereof to an end of the guide bar 422 remote from the rack gear 413, and at the other end thereof to the opening handle 21.

In this application, open handle 21 and drive articulated slab 423 when rotating and remove, drive guide bar 422 through articulated slab 423 and slide, guide sleeve 421 can carry on spacingly to guide bar 422 for guide bar 422 only can slide along the horizontal direction, thereby guarantees that guide bar 422 drives rack 413 and slides along the guide rail.

Specifically, the guide bar 422 and the guide rail are arranged in parallel.

Specifically, the rotation angle of the opening handle 21 between opening and closing is 90 °, when the opening handle 21 is switched between opening and closing, the rotation shaft 43 drives the rotation angle of the cam 44 to be just 180 °, that is, when the opening handle 21 is switched from closing to opening, the rotation shaft 43 rotates 180 °, so that the end with the smaller radius of the cam 44 is attached to the locking plate 52, so that the locking plate 52 can slide along the sliding rod 51 under the elastic force of the compression spring 54, so that the second locking tooth 521 of the locking plate 52 is separated from the first locking tooth 311 of the rotating hand wheel 31, when the opening handle 21 is switched from opening to closing, the rotation shaft 43 rotates 180 ° again, so that the end with the larger radius of the cam 44 is attached to the locking plate 52, so that the locking plate 52 is pressed by the cam 44, the compression spring 54 is compressed, and the second locking tooth 521 of the locking plate 52 is engaged with the first locking tooth 311 on the outer circumferential side of the rotating hand wheel 31, so as to limit the rotating hand wheel 31.

In the present application, when the opening handle 21 of the evacuation valve 2 is in the open state, the second locking tooth 521 of the locking plate 52 is separated from the first locking tooth 311; when the open handle 21 of the evacuation valve 2 is in the closed state, the second locking teeth 521 of the locking plate 52 engage with the first locking teeth 311.

In some embodiments, the linkage mechanism 4 further includes a bearing seat 45 disposed on one side of the tank 1, and the rotating shaft 43 penetrates through the bearing seat 45 and is in interference fit with a bearing inner ring in the bearing seat 45.

In this application, carry on spacingly through bearing frame 45 to pivot 43, stability when guaranteeing pivot 43 to rotate.

When the safety valve preventing automatic opening is used, the second locking teeth 521 of the locking plate 52 are meshed with the first locking teeth 311 on the outer periphery of the rotary hand wheel 31, so that the discharge valve 3 is prevented from being opened, only after the opening handle 21 of the emptying valve 2 is opened, the opening handle 21 drives the rotating shaft 43 to rotate through the connecting rod assembly 42 and the transmission assembly 41, the rotating shaft 43 drives the cam 44 to rotate for a certain angle, the locking plate 52 slides along the sliding rod 51 under the supporting effect of the compression spring 54, so that the second locking teeth 521 of the locking plate 52 are separated from the first locking teeth 311 on the outer periphery of the rotary hand wheel 31, the rotary hand wheel 31 of the discharge valve 3 can be rotated at the moment, the discharge valve 3 can be opened only after the emptying valve 2 is opened, the problem that the emptying valve 2 is forgotten to be opened for discharging is fundamentally solved, and the safety and the use reliability are improved.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that "over 8230" \8230on "," over 82308230; "over 8230;" and "over 8230; \8230; over" in the present disclosure should be interpreted in the broadest manner such that "over 8230;" over 8230 ";" not only means "directly over something", but also includes the meaning of "over something" with intervening features or layers therebetween, and "over 8230;" over 8230 ";" or "over 8230, and" over "not only includes the meaning of" over "or" over "but also may include the meaning of" over "or" over "with no intervening features or layers therebetween (i.e., directly over something).

Furthermore, spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's illustrated relationship to another element or feature. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly as well.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A safety valve for preventing automatic opening is arranged on a tank body (1); characterized in that, prevent automatically opened safety valve includes:

the emptying valve (2) is arranged at the top of the tank body (1), and an opening handle (21) for opening and closing the emptying valve (2) is arranged on the emptying valve (2);

the discharge valve (3) is arranged at the bottom of one side of the tank body (1), a rotating hand wheel (31) for opening and closing the discharge valve (3) is arranged on the discharge valve (3), and first locking teeth (311) are arranged on the outer side of the rotating hand wheel (31);

the linkage mechanism (4) is arranged on the tank body (1), the linkage mechanism (4) comprises a transmission assembly (41), a connecting rod assembly (42) connected with the input end of the transmission assembly (41) and a rotating shaft (43) connected with the output end of the transmission assembly (41), one end, far away from the transmission assembly (41), of the connecting rod assembly (42) is movably connected with the opening handle (21) of the emptying valve (2), and one end, far away from the transmission assembly (41), of the rotating shaft (43) is provided with a cam (44); and

the locking mechanism (5) is arranged on the tank body (1) and adjacent to the discharge valve (3), the locking mechanism (5) comprises a sliding rod (51) connected with the tank body (1), a locking plate (52) arranged on the sliding rod (51), a limiting plate (53) arranged at the end part of the sliding rod (51) and a compression spring (54) sleeved on the outer side of the sliding rod (51), two ends of the compression spring (54) are respectively connected with the locking plate (52) and the limiting plate (53), one side of the locking plate (52) abuts against the outer peripheral side of the cam (44), and the other end of the locking plate is provided with a second locking tooth (521) used for being engaged with the second locking tooth (521).

2. A safety valve against automatic opening, according to claim 1, characterized in that said transmission assembly (41) comprises:

the box body (411) is provided with a cavity, a first through hole and a second through hole which are communicated with the cavity, and a sliding rail (412) in the horizontal direction is arranged in the cavity;

the rack (413) is arranged on the sliding rail (412) in the cavity in a sliding mode; and

a gear (414); is rotatably arranged in the cavity, and the gear (414) is meshed with the rack (413);

the end part of the connecting rod component (42) penetrates through the first through hole and is connected with the rack (413), and the end part of the rotating shaft (43) penetrates through the second through hole and is coaxially connected with the gear (414).

3. A safety valve against automatic opening according to claim 2, characterized in that said connecting-rod assembly (42) comprises:

the guide sleeve (421) is arranged at the top of the tank body (1);

the guide rod (422) penetrates through the guide sleeve (421), and one end of the guide rod (422) penetrates through the first through hole and is connected with the rack (413); and

and one end of the hinged plate (423) is hinged with one end of the guide rod (422) far away from the rack (413), and the other end of the hinged plate (423) is hinged with the opening handle (21).

4. An anti-automatic opening safety valve according to claim 1, characterized in that when the opening handle (21) of the evacuation valve (2) is in the open condition, the second locking tooth (521) of the limit plate (53) is disengaged from the first locking tooth (311); when the opening handle (21) of the emptying valve (2) is in a closed state, the second locking tooth (521) of the limiting plate (53) is meshed with the first locking tooth (311).

5. The safety valve preventing automatic opening according to claim 1, wherein the linkage mechanism (4) further comprises a bearing seat (45) arranged on one side of the tank body (1), and the rotating shaft (43) penetrates through the bearing seat (45) and is in interference fit with a bearing inner ring in the bearing seat (45).