Safety valve sealing structure

Abstract

The utility model relates to the technical field of safety valves, in particular to a safety valve sealing structure which comprises a valve seat, a valve clack body and a sealing assembly, the valve clack body is connected with the valve seat in a sliding mode and located above the valve seat, the sealing assembly comprises a sealing sleeve, an installation piece, a connecting rod and a contact piece, and the sealing sleeve is detachably connected with the valve clack body. The sealing sleeve is fixedly connected with the valve clack body and located on the outer side of the valve clack body, the mounting piece is detachably connected with the sealing sleeve and located on the outer side of the sealing sleeve, one end of the connecting rod is fixedly connected with the sealing sleeve and located below the sealing sleeve, and the contact piece is fixedly connected with the other end of the connecting rod and located below the connecting rod. And impact pressure on a sealing piece is reduced through device deformation, the sealing performance of the structure is effectively improved, and the service life of the structure is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valves, in particular to a safety valve sealing structure. Background Art

[0002] The safety valve used in pressure vessels or fluid channels uses the pressure of the medium itself to automatically discharge gas or fluid that exceeds the safety value to ensure the safe operation of the system. When the pressure returns to normal, the valve closes again. The sealing component of the safety valve is composed of a valve disc and a seal fixed on the valve disc. Usually, the seal is sleeved on the threaded protrusion of the valve disc sealing surface, and then the seal is fixed to the valve disc with a nut; there is also a method of embedding the seal on the valve disc sealing surface and bonding it together with an adhesive. At present, the sealing structure is affected by factors such as vibration caused by channel pipe resistance, and the nut will fall off and the bond will crack, causing the seal to separate from the valve disc, which not only affects the sealing effect, but also causes the safety valve to fail, causing safety hazards.

[0003] To solve the above problems, the prior art patent (CN201851724U) discloses a safety valve sealing structure, including a valve disc and a sealing member, an internal threaded hole is opened inward from the center of the end face of the valve disc, the sealing member is a T-shaped structure, and the vertical rod of the sealing member is provided with an external thread matching the internal threaded hole of the valve disc. The valve disc and the sealing member are threadedly connected to form a sealing structure. The utility model is characterized in that a T-shaped sealing member is adopted and is tightly combined together through a threaded connection with the valve disc. The sealing member has good sealing effect, simple structure, safe and reliable use, and improves the overall performance of the safety valve.

[0004] However, in the above-mentioned prior art, the seal is formed by connecting the valve disc with a thread. Since the seal is under high pressure for a long time, the seal will age quickly and lose its sealing effect. In addition, the seal is not easy to remove due to the impact of high pressure. Utility Model Content

[0005] The purpose of the utility model is to provide a safety valve sealing structure, which solves the technical problems that in the prior art, a seal is formed by connecting a thread with a valve disc, the seal is in a high-pressure state for a long time, which causes the seal to age quickly and lose its sealing effect, and the seal is not easy to remove due to the impact of high pressure.

[0006] To achieve the above-mentioned purpose, the utility model adopts a safety valve sealing structure, including a valve seat, a valve disc body and a sealing assembly, the valve disc body is slidably connected to the valve seat and is located above the valve seat, the sealing assembly includes a sealing sleeve, a mounting piece, a connecting rod and a contact piece, the sealing sleeve is detachably connected to the valve disc body and is located on the outside of the valve disc body, the mounting piece is detachably connected to the sealing sleeve and is located on the outside of the sealing sleeve, one end of the connecting rod is fixedly connected to the sealing sleeve and is located below the sealing sleeve, and the contact piece is fixedly connected to the other end of the connecting rod and is located below the connecting rod.

[0007] Wherein, the mounting member comprises a clamp and two mounting sleeves, the clamp is detachably connected to the sealing sleeve and is located outside the sealing sleeve, and the two mounting sleeves are fixedly connected to the clamp and are located outside the clamp.

[0008] Wherein, the contact member includes a fixed plate, a deformable rubber and a contact surface, the fixed plate is fixedly connected to the connecting rod and is located below the connecting rod, the deformable rubber is fixedly connected to the fixed plate and is located below the fixed plate, and the contact surface is fixedly connected to the deformable rubber and is located below the deformable rubber.

[0009] Wherein, the valve seat has a mounting groove adapted to the valve flap body, and the valve seat also has a filling groove adapted to the deformable rubber.

[0010] Wherein, the valve flap body has a groove matched with the sealing sleeve, and the sealing sleeve has a clamping groove matched with the clamp.

[0011] Wherein, the safety valve sealing structure further comprises a barrier sleeve, the barrier sleeve has a through groove, the barrier sleeve is detachably connected to the clamp and is located on the outside of the clamp.

[0012] The utility model provides a safety valve sealing structure. When it is used, the sealing sleeve is installed on the outside of the valve flap body through the mounting piece. The valve flap body is installed in the valve seat. Liquid impacts the contact piece, and the contact piece is deformed in the valve seat to enhance the airtightness between the contact piece and the valve seat. The sealing sleeve is used to prevent accidental damage to the contact piece, which may cause backward leakage. This method can effectively solve the problem that the threaded seal is aged quickly due to being in a high-pressure state for a long time and is inconvenient to remove. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model.

[0015] Figure 2 It is a structural sectional view of the first embodiment of the utility model.

[0016] Figure 3 It is a partial structural schematic diagram of the first embodiment of the utility model.

[0017] Figure 4 It is a structural schematic diagram of the second embodiment of the utility model.

[0018] 101-valve seat, 102-valve disc body, 103-sealing sleeve, 104-connecting rod, 105-clamp, 106-installing sleeve, 107-fixing plate, 108-deformable rubber, 109-contact surface, 110-installing groove, 111-filling groove, 112-groove, 113-card slot, 201-barrier sleeve, 202-through groove. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0020] The first embodiment of the present application is:

[0021] See also Figure 1 to Figure 3 ,in Figure 1 It is a structural schematic diagram of the first embodiment of the utility model. Figure 2 It is a structural cross-sectional view of the first embodiment of the utility model. Figure 3 It is a partial structural schematic diagram of the first embodiment of the utility model.

[0022] The utility model provides a safety valve sealing structure, including a valve seat 101, a valve disc body 102 and a sealing assembly, the sealing assembly includes a sealing sleeve 103, a mounting member, a connecting rod 104 and a contact member, the mounting member includes a clamp 105 and two mounting sleeves 106, the contact member includes a fixing plate 107, a deformable rubber 108 and a contact surface 109. The above scheme solves the problem that a seal is formed by connecting the valve disc with a thread, and since the seal is in a high-pressure state for a long time, it will cause the seal to age quickly and lose the sealing effect, and it is not easy to remove the seal due to the impact of high pressure.

[0023] According to the present specific embodiment, the valve flap body 102 is slidably connected to the valve seat 101 and is located above the valve seat 101. The sealing assembly includes a sealing sleeve 103, a mounting member, a connecting rod 104 and a contact member. The sealing sleeve 103 is detachably connected to the valve flap body 102 and is located outside the valve flap body 102. The mounting member is detachably connected to the sealing sleeve 103 and is located outside the sealing sleeve 103. One end of the connecting rod 104 is fixedly connected to the sealing sleeve 103 and is located below the sealing sleeve 103. The contact member is fixedly connected to the sealing sleeve 103 and is located below the sealing sleeve 103. The other end of the connecting rod 104 is fixedly connected and located below the connecting rod 104. The sealing sleeve 103 is installed on the outside of the valve flap body 102 through the mounting piece. The valve flap body 102 is installed in the valve seat 101. The liquid impacts the contact piece, and the contact piece is deformed in the valve seat 101, thereby enhancing the airtightness between the contact piece and the valve seat 101. The sealing sleeve 103 is used to prevent accidental damage to the contact piece and cause backward leakage. This method can effectively solve the problem that the threaded seal is in a high-pressure state for a long time, ages quickly, and is inconvenient to remove.

[0024] Among them, the clamp 105 is detachably connected to the sealing sleeve 103 and is located on the outside of the sealing sleeve 103. The two installation sleeves 106 are fixedly connected to the clamp 105 and are located on the outside of the clamp 105. The inner diameter of the clamp 105 is enlarged by the two installation sleeves 106 so that it can be installed in the sealing sleeve 103. In this way, the sealing sleeve 103 is tightly attached to the valve disc body 102 through the clamp 105, which effectively prevents the sealing sleeve 103 from loosening and slipping, thereby improving the stability of the structure.

[0025] Secondly, the fixing plate 107 is fixedly connected to the connecting rod 104 and is located below the connecting rod 104. The deformable rubber 108 is fixedly connected to the fixing plate 107 and is located below the fixing plate 107. The contact surface 109 is fixedly connected to the deformable rubber 108 and is located below the deformable rubber 108. The connecting rod 104 fixes the fixing plate 107. The deformable rubber 108 will deform to both sides when pushed by external force. When the contact surface 109 is subjected to pressure shock, it pushes the deformable rubber 108 to deform, so as to reduce part of the pressure shock and improve the sealing performance in the valve seat 101, thereby effectively improving the sealing performance of the safety valve.

[0026] At the same time, the valve seat 101 has an installation groove 110 adapted to the valve flap body 102, and the valve seat 101 also has a filling groove 111 adapted to the deformable rubber 108. The valve flap body 102 slides in the installation groove 110, and the filling groove 111 is used for the deformable rubber 108 to deform and fill the filling groove 111, thereby improving the airtightness of the structure.

[0027] In addition, the valve flap body 102 has a groove 112 adapted to the sealing sleeve 103, and the sealing sleeve 103 has a groove 113 adapted to the clamp 105. The sealing sleeve 103 is installed on the outer side of the valve flap body 102 through the groove 112, and the clamp 105 is clamped with the sealing sleeve 103 through the groove 113, so that the sealing sleeve 103 is tightly attached to the valve flap body 102.

[0028] A safety valve sealing structure of the present embodiment is used, by providing a valve flap body 102 and a sealing assembly. When it is used specifically, the sealing sleeve 103 is installed on the outer side of the valve flap body 102 through the groove 112, and the inner diameter of the clamp 105 is enlarged through the two installation sleeves 106. The clamp 105 is clamped with the sealing sleeve 103 through the clamping groove 113, and the sealing sleeve 103 is closely attached to the valve flap body 102. The valve flap body 102 is installed in the valve seat 101, and the liquid impacts the contact surface 109 below the valve flap body 102. When the contact surface 109 is subjected to pressure impact, the deformable rubber 108 is pushed to deform, and the filling groove 111 is filled, so that it reduces part of the pressure impact and improves the sealing performance in the valve seat 101. The sealing sleeve 103 is used to prevent accidental damage to the contact piece and cause backward leakage. The disassembly design facilitates the installation and disassembly of the seal, and reduces the impact pressure on the seal by device deformation, effectively improving the sealing performance and service life of the structure.

[0029] The second embodiment of the present application is:

[0030] Based on the first embodiment, please refer to Figure 4 , Figure 4 It is a structural schematic diagram of the second embodiment of the utility model.

[0031] The utility model provides a safety valve sealing structure which also includes a barrier sleeve 201.

[0032] According to this specific embodiment, the barrier sleeve 201 has a through groove 202. The barrier sleeve 201 is detachably connected to the clamp 105 and is located on the outside of the clamp 105. After the clamp 105 is installed, the barrier sleeve 201 is sleeved on the outside of the clamp 105. The through groove 202 facilitates the disassembly of the barrier sleeve 201.

[0033] A safety valve sealing structure of the present embodiment is used, by setting a barrier sleeve 201. When it is used, after the clamp 105 is installed, the barrier sleeve 201 is sleeved on the outside of the clamp 105. The through groove 202 facilitates the removal of the barrier sleeve 201, thereby effectively isolating the clamp 105 and preventing oil from penetrating into the surface of the clamp 105.

[0034] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A safety valve sealing structure, comprising a valve seat, characterized in that: It also includes a valve flap body and a sealing assembly, the valve flap body is slidably connected to the valve seat and is located above the valve seat, the sealing assembly includes a sealing sleeve, a mounting piece, a connecting rod and a contact piece, the sealing sleeve is detachably connected to the valve flap body and is located on the outside of the valve flap body, the mounting piece is detachably connected to the sealing sleeve and is located on the outside of the sealing sleeve, one end of the connecting rod is fixedly connected to the sealing sleeve and is located below the sealing sleeve, and the contact piece is fixedly connected to the other end of the connecting rod and is located below the connecting rod.

2. The safety valve sealing structure according to claim 1, characterized in that: The mounting member comprises a clamp and two mounting sleeves. The clamp is detachably connected to the sealing sleeve and is located outside the sealing sleeve. The two mounting sleeves are fixedly connected to the clamp and are located outside the clamp.

3. The safety valve sealing structure according to claim 2, characterized in that: The contact member includes a fixed plate, a deformable rubber and a contact surface, wherein the fixed plate is fixedly connected to the connecting rod and is located below the connecting rod, the deformable rubber is fixedly connected to the fixed plate and is located below the fixed plate, and the contact surface is fixedly connected to the deformable rubber and is located below the deformable rubber.

4. The safety valve sealing structure according to claim 3, characterized in that: The valve seat has a mounting groove matched with the valve flap body, and the valve seat also has a filling groove matched with the deformable rubber.

5. The safety valve sealing structure according to claim 4, characterized in that: The valve flap body has a groove matched with the sealing sleeve, and the sealing sleeve has a clamping groove matched with the clamp.

6. The safety valve sealing structure according to claim 5, characterized in that: The safety valve sealing structure also includes a barrier sleeve, the barrier sleeve has a through groove, the barrier sleeve is detachably connected to the clamp and is located outside the clamp.

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