Butterfly-shaped sealing head capable of releasing air pressure

Abstract

The utility model belongs to the technical field of butterfly-shaped seal heads, and particularly relates to a butterfly-shaped seal head capable of releasing air pressure, which comprises a butterfly-shaped seal head main body, and an automatic pressure releasing mechanism is mounted on the butterfly-shaped seal head main body. During use, when the air pressure in the butterfly-shaped end socket body rises, thrust can be generated to push the pressure relief piston to move horizontally, when the air pressure reaches a pressure relief critical value, the pressure relief piston can be pushed to move until the exhaust pipe is opened, at the moment, the air pressure in the butterfly-shaped end socket body can be automatically released through the exhaust pipe, and after pressure relief is completed, under the elastic force effect of the pressure relief spring, the pressure relief piston is pushed to move horizontally. When the butterfly-shaped seal head body decompresses, the pressure relief piston is extruded and pushed to automatically reset, the exhaust pipe is automatically closed and kept in a sealed state, and therefore the situation that the butterfly-shaped seal head body expands, deforms and even is broken and damaged due to the fact that pressure relief is not timely can be effectively reduced, and the elastic force of the pressure relief spring can be changed through matched arrangement of the adjusting assembly. Therefore, the pressure relief critical value of automatic pressure relief can be adjusted, and the application range is widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly head technical field, concretely is a kind of butterfly head of pressure release. BACKGROUND

[0002] Butterfly head, also known as flange ball head, is composed of a spherical surface, a certain height of cylindrical straight edge and a transition part with a smaller curvature radius than the spherical surface radius, commonly used to close the end of container or pipeline to isolate the internal and external medium.

[0003] The prior art with publication number CN217382516U discloses a kind of butterfly head of pressure release, including butterfly head main body, protective cover, air inlet and exhaust component and air inlet and exhaust pipe, the protective cover is located at the position of the outer side of butterfly head main body;It protects butterfly head main body by protective cover, avoids external force touch and causes butterfly head main body to deform, and protective cover is elastically installed on the outer side of butterfly head main body by fixing ring and shock-absorbing spring, shock-absorbing butterfly head main body, improve the safety of head;But it needs to be manually opened by staff to carry out pressure relief work during use, if the air pressure in butterfly head is suddenly increased, it can easily appear due to pressure relief not in time and cause butterfly head to swell and deform even rupture and damage, for this purpose, we propose a kind of butterfly head of pressure release. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of butterfly head of pressure release, solves the problem in the background.

[0005] To achieve the above object, the utility model is realized by the following technical scheme:

[0006] A kind of butterfly head of pressure release, including butterfly head main body, the automatic pressure relief mechanism is installed on the butterfly head main body;The automatic pressure relief mechanism includes the pressure relief cylinder fixedly installed on the side of the butterfly head main body, the bottom of the pressure relief cylinder is fixedly installed with exhaust pipe, the pressure relief cylinder is provided with adjusting sliding plate, the side of the adjusting sliding plate is evenly provided with a plurality of connection sliding holes, a plurality of the connection sliding holes are slidably installed with connection sliding rod, the one end of a plurality of the connection sliding rods is fixedly installed with pressure relief piston, the pressure relief piston is slidably installed in the pressure relief cylinder, the exhaust pipe is located between the pressure relief piston and the adjusting sliding plate, the side of the pressure relief piston and the adjusting sliding plate that mutually approach is fixedly installed with a plurality of pressure relief springs, the pressure relief cylinder is fixedly sleeved with fixing ring, the side of the pressure relief piston away from the adjusting sliding plate is fitted with the side of the fixing ring, adjusting assembly for controlling the horizontal movement of the adjusting sliding plate is provided on the pressure relief cylinder.

[0007] Preferably, the adjusting assembly comprises a moving cylinder fixedly installed on the side of the adjusting sliding plate, the end of the pressure relief cylinder is provided with a mounting rotating hole, a horizontal screw rod is rotatably installed in the mounting rotating hole, one end of the horizontal screw rod is threadedly sleeved in the moving cylinder, the other end of the horizontal screw rod is provided with a prismatic sliding hole, a prismatic connecting rod is slidably installed in the prismatic sliding hole, and an adjusting knob is fixedly installed on the end of the prismatic connecting rod.

[0008] Preferably, the horizontal guide unit comprises a guide rod fixedly installed on the inner wall of the end of the pressure relief cylinder, and a guide block is slidably sleeved on the guide rod and fixedly installed on the moving cylinder.

[0009] Preferably, two limiting blocks are fixedly sleeved on the guide rod, and the guide block is located between the two limiting blocks.

[0010] Preferably, two fixed rods are fixedly installed on the side of the adjusting knob, a plurality of fixed holes are uniformly formed in the end of the pressure relief cylinder, the ends of the two fixed rods extend into two of the fixed holes, respectively, and a reset element is installed on the adjusting knob.

[0011] Preferably, the reset element comprises a reset tension spring, and the two ends of the reset tension spring are fixedly installed on the end of the pressure relief cylinder and the side of the adjusting knob, respectively. Beneficial effects

[0012] The utility model provides a butterfly head of gas pressure release.

[0013] 1、the butterfly head of gas pressure release, through the setting of automatic pressure relief mechanism, when the gas pressure in butterfly head main part is high, will produce the push force and push the pressure relief piston to move and compress the pressure relief spring, along with the gas pressure gradually is high, will push the pressure relief piston moves far, when the gas pressure reaches the pressure relief critical value, will push the pressure relief piston moves to open the exhaust pipe, at this moment the gas pressure in butterfly head main part will be released automatically through the exhaust pipe, when the pressure relief is completed, under the spring force of pressure relief spring, will extrude and push the pressure relief piston and reset automatically, and then can close the exhaust pipe automatically and keep the sealed state, so as to effectively reduce the situation that the butterfly head main part expands and deforms or even breaks down due to the untimely pressure relief, and the structure is simple, convenient to use and practical.

[0014] 2、The butterfly head that this kind of pressure release can be released, through the cooperation of adjusting assembly, when rotating adjusting knob, will be through prismatic connecting rod, horizontal screw rod, moving screw cylinder, guide rod and guide block drive adjusting shift plate horizontal movement, adjusting shift plate horizontal movement will change the elastic force of pressure relief spring, when making the elastic force of pressure relief spring larger, the pressure relief critical value required to open exhaust pipe for automatic pressure relief will also become larger, similarly, when the elastic force of pressure relief spring becomes smaller, the pressure relief critical value required to open exhaust pipe for automatic pressure relief will also become smaller, so as to realize the purpose of adjusting the pressure relief critical value of automatic pressure relief, and improve the application range.

[0015] 3、The butterfly head that this kind of pressure release can be released, when pulling adjusting knob, will drive fixed rod to move out of fixed hole, at this time, adjusting knob can be rotated for adjusting operation, when adjusting knob is loosened, under the elastic force of reset tension spring, adjusting knob will be pulled to drive fixed rod to automatically insert into fixed hole, and adjusting knob is automatically locked and cannot be rotated, so that in the use process, the situation that the pressure relief critical value is changed due to accidentally touching adjusting knob can be effectively reduced, and the use is stable and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is a partial cut structure schematic diagram of pressure relief cylinder in the utility model;

[0018] Figure 3 It is a partial enlarged structure schematic diagram of the connection between horizontal screw rod and adjusting knob in the utility model;

[0019] Figure 4 It is a three-dimensional structure schematic diagram of the utility model Figure 2 in A part.

[0020] In the drawing: 1, butterfly head main body; 2, pressure relief cylinder; 3, exhaust pipe; 4, pressure relief piston; 5, adjusting shift plate; 6, connecting slide rod; 7, pressure relief spring; 8, fixed ring; 9, moving screw cylinder; 10, horizontal screw rod; 11, prismatic connecting rod; 12, adjusting knob; 13, guide rod; 14, guide block; 15, limit block; 16, fixed rod; 17, reset tension spring. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] Please refer to Figures 1-4 The utility model provides a technical scheme: a butterfly head which can release pressure by air pressure, comprising a butterfly head main body 1, the butterfly head main body 1 is installed with automatic pressure relief mechanism;Automatic pressure relief mechanism includes the pressure relief cylinder 2 fixedly installed on the side of butterfly head main body 1, the bottom of pressure relief cylinder 2 is fixedly installed with exhaust pipe 3, pressure relief cylinder 2 is provided with adjusting shift plate 5, the side of adjusting shift plate 5 is evenly provided with a plurality of connecting sliding holes, a plurality of connecting sliding holes are slidably installed with connecting sliding rod 6, one end of a plurality of connecting sliding rods 6 is commonly fixedly installed with pressure relief piston 4, pressure relief piston 4 is slidably installed in pressure relief cylinder 2, exhaust pipe 3 is located between pressure relief piston 4 and adjusting shift plate 5, pressure relief piston 4 and adjusting shift plate 5 are commonly fixedly installed with a plurality of pressure relief springs 7 on the side of mutual approach, pressure relief cylinder 2 is fixedly sleeved with fixed ring 8, the side of pressure relief piston 4 away from adjusting shift plate 5 is attached to the side of fixed ring 8, pressure relief cylinder 2 is provided with the adjusting assembly for controlling the horizontal movement of adjusting shift plate 5.

[0023] Through the setting of automatic pressure relief mechanism, when the air pressure in butterfly head main body 1 rises, the thrust will push pressure relief piston 4 to move horizontally and compress pressure relief spring 7, along with the gradual rise of air pressure, will push pressure relief piston 4 to move farther, when the air pressure rises to push pressure relief piston 4 to move to open exhaust pipe 3, the air pressure in butterfly head main body 1 will be automatically released through exhaust pipe 3, so as to effectively reduce the situation that butterfly head main body 1 expands and deforms or even breaks and damages due to untimely pressure relief, when pressure relief is completed, under the elastic force of pressure relief spring 7, pressure relief piston 4 will be squeezed and pushed to reset automatically, and then exhaust pipe 3 can be automatically closed to keep the sealed state, which is simple in structure, convenient to use and good in practicability.

[0024] As Figure 2 and Figure 3As shown, the adjusting assembly comprises a moving cylinder 9 fixedly installed on the side of the adjusting sliding plate 5, the end of the pressure relief cylinder 2 is provided with a mounting rotating hole, a horizontal screw rod 10 is rotatably installed in the mounting rotating hole, one end of the horizontal screw rod 10 is threadedly sleeved in the moving cylinder 9, the other end of the horizontal screw rod 10 is provided with a prismatic sliding hole, a prismatic connecting rod 11 is slidably installed in the prismatic sliding hole, the end of the prismatic connecting rod 11 is fixedly installed with an adjusting knob 12, and a horizontal guiding unit is installed on the moving cylinder 9. When the adjusting knob 12 is rotated, the horizontal screw rod 10 will be rotated together through the prismatic connecting rod 11, and at this time, under the cooperation of the horizontal guiding unit, the rotation of the horizontal screw rod 10 will drive the horizontal movement of the moving cylinder 9 and the adjusting sliding plate 5, and the horizontal movement of the adjusting sliding plate 5 will change the elastic force of the pressure relief spring 7, when the elastic force of the pressure relief spring 7 is increased, the pressure relief critical value required to open the exhaust pipe 3 for automatic pressure relief will also be increased, and vice versa. Therefore, the purpose of adjusting the pressure relief critical value of automatic pressure relief is achieved, and the application range is improved.

[0025] As shown in Figure 4 , the horizontal guiding unit comprises a guiding rod 13 fixedly installed on the inner wall of the end of the pressure relief cylinder 2, a guiding block 14 is slidably sleeved on the guiding rod 13, the guiding block 14 is fixedly installed on the moving cylinder 9, two limiting blocks 15 are fixedly sleeved on the guiding rod 13, and the guiding block 14 is located between the two limiting blocks 15. Through the cooperation of the guiding rod 13 and the guiding block 14, the moving cylinder 9 can only move horizontally and will not rotate with the horizontal screw rod 10, thereby playing a horizontal guiding role, and through the cooperation of the two limiting blocks 15, the movement distance of the guiding block 14, the moving cylinder 9 and the adjusting sliding plate 5 can be limited.

[0026] As shown in Figure 3 , the side of the adjusting knob 12 is fixedly installed with two fixed rods 16, the end of the pressure relief cylinder 2 is uniformly provided with a plurality of fixed holes, the ends of the two fixed rods 16 respectively extend into two of the fixed holes, and the end of the pressure relief cylinder 2 and the side of the adjusting knob 12 are jointly fixedly installed with a reset tension spring 17. When the adjusting knob 12 is pulled to move the fixed rod 16 out of the fixed hole, the adjusting knob 12 can be adjusted by rotating, and when the adjusting knob 12 is released, the adjusting knob 12 will be automatically reset under the elastic force of the reset tension spring 17, thereby driving the fixed rod 16 to automatically insert into the fixed hole, and the adjusting knob 12 is automatically locked and cannot be rotated. Therefore, during use, the situation that the pressure relief critical value is changed due to accidental touching of the adjusting knob 12 can be effectively reduced, and the use is stable and reliable.

[0027] Working principle: when the butterfly head body 1 in the use, when the air pressure rises, the thrust will be generated to push the pressure relief piston 4 to move horizontally and compress the pressure relief spring 7, with the gradual increase of air pressure, will push the pressure relief piston 4 to move farther, when the air pressure reaches the pressure relief critical value, will push the pressure relief piston 4 to move to open the exhaust pipe 3, at this time the air pressure in the butterfly head body 1 will be automatically released through the exhaust pipe 3, when the pressure relief is completed, under the action of the elastic force of the pressure relief spring 7, will squeeze and push the pressure relief piston 4 to automatically reset, in turn, the exhaust pipe 3 can be automatically closed to maintain the sealed state; when the pressure relief critical value needs to be adjusted, the worker can pull the adjusting knob 12 until the fixed rod 16 moves out of the fixed hole, at this time the adjusting knob 12 can be rotated, the rotation of the adjusting knob 12 will drive the horizontal screw rod 10 to rotate together through the prismatic connecting rod 11, under the cooperation of the guide rod 13 and the guide block 14, the rotation of the horizontal screw rod 10 will drive the adjusting moving plate 5 to move horizontally through the moving cylinder 9, the horizontal movement of the adjusting moving plate 5 will change the elastic force of the pressure relief spring 7, in turn, the pressure relief critical value of the automatic pressure relief can be adjusted, after the adjustment is completed, the adjusting knob 12 is directly released, at this time under the action of the elastic force of the reset tension spring 17, the adjusting knob 12 will be automatically reset, in turn, the fixed rod 16 will be automatically inserted into the fixed hole, the adjusting knob 12 is automatically locked and cannot be rotated, avoiding the pressure relief critical value from being changed due to accidentally touching the adjusting knob 12 during use.

[0028] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that includes a list of elements does not only include those elements, but also includes other elements not explicitly listed, or inherent to such process, method, article, or apparatus.

[0029] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pneumatically releasable butterfly closure comprising a butterfly closure body (1), characterized in that: The butterfly head body (1) is provided with an automatic pressure relief mechanism; the automatic pressure relief mechanism comprises a pressure relief cylinder (2) fixedly installed on the side of the butterfly head body (1), a exhaust pipe (3) fixedly installed at the bottom of the pressure relief cylinder (2), an adjusting sliding plate (5) arranged in the pressure relief cylinder (2), a plurality of connecting sliding holes uniformly formed in the side of the adjusting sliding plate (5), a plurality of connecting sliding rods (6) slidably installed in the connecting sliding holes, a pressure relief piston (4) fixedly installed at one end of the connecting sliding rods (6), the pressure relief piston (4) slidably installed in the pressure relief cylinder (2), the exhaust pipe (3) located between the pressure relief piston (4) and the adjusting sliding plate (5), a plurality of pressure relief springs (7) fixedly installed on the sides of the pressure relief piston (4) and the adjusting sliding plate (5) which are close to each other, a fixing ring (8) fixedly sleeved in the pressure relief cylinder (2), the side of the pressure relief piston (4) away from the adjusting sliding plate (5) abutting with the side of the fixing ring (8), and an adjusting assembly arranged on the pressure relief cylinder (2) and used for controlling the horizontal movement of the adjusting sliding plate (5).

2. A pressure-releasable butterfly closure according to claim 1, characterized in that: The adjusting assembly comprises a moving screw cylinder (9) fixedly installed on the side of the adjusting sliding plate (5), an installation rotating hole formed in the end of the pressure relief cylinder (2), a horizontal screw rod (10) rotatably installed in the installation rotating hole, one end of the horizontal screw rod (10) threadedly sleeved in the moving screw cylinder (9), a prismatic sliding hole formed in the other end of the horizontal screw rod (10), a prismatic connecting rod (11) slidably installed in the prismatic sliding hole, an adjusting knob (12) fixedly installed at the end of the prismatic connecting rod (11), and a horizontal guiding unit arranged on the moving screw cylinder (9).

3. A pneumatically releaseable butterfly closure according to claim 2, wherein: The horizontal guiding unit comprises a guiding rod (13) fixedly installed on the inner wall of the end of the pressure relief cylinder (2), a guiding block (14) slidably sleeved on the guiding rod (13), and the guiding block (14) fixedly installed on the moving screw cylinder (9).

4. A pneumatically releaseable butterfly closure according to claim 3, wherein: Two limiting blocks (15) are fixedly sleeved on the guiding rod (13), and the guiding block (14) is located between the two limiting blocks (15).

5. A pneumatically releaseable butterfly closure according to claim 3, wherein: Two fixed rods (16) are fixedly installed on the side of the adjusting knob (12), a plurality of fixed holes are uniformly formed in the end of the pressure relief cylinder (2), the ends of the two fixed rods (16) respectively extend into two of the fixed holes, and a reset element is arranged on the adjusting knob (12).

6. A pneumatically releaseable butterfly closure according to claim 5, wherein: The reset element comprises a reset tension spring (17), and the two ends of the reset tension spring (17) are fixedly installed on the end of the pressure relief cylinder (2) and the side of the adjusting knob (12) respectively.

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