CN219571022U

CN219571022U - Valve sealing structure

Info

Publication number: CN219571022U
Application number: CN202320552056.2U
Authority: CN
Inventors: 郭强
Original assignee: Zhejiang Zhonghong Engineering Equipment Co ltd
Current assignee: Zhejiang Zhonghong Engineering Equipment Co ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-08-22
Anticipated expiration: 2033-03-21

Abstract

The utility model discloses a valve sealing structure, which relates to the technical field of valve sealing, and particularly comprises a valve pump, wherein a first flange plate is fixedly arranged on the upper surface of the valve pump, a fixing groove is formed in the upper surface of the first flange plate, a tight connection assembly is movably clamped in the fixing groove in the upper surface of the first flange plate, an elastic body part can synchronously downwards rotate through the tight connection assembly and other devices, an extension pressing plate firstly contacted with the fixing groove can press an annular sealing part to enable a telescopic spring on the lower surface of the annular sealing part to deform under the stress, meanwhile, the lower surface is pressed and contacted with an extension resisting plate when the annular sealing part is pressed and displaced, meanwhile, a part with more than one end of the elastic body part is fixed with the lower surface of the first flange plate through a trapezoid clamping part, the problem that five layers of fillers are connected in series through threads is avoided, the problem that the threads of a pipe orifice are easy to rust and difficult to detach although the threads are simple and compact is not only improved, but also the sealing performance is improved.

Description

Valve sealing structure

Technical Field

The utility model relates to the technical field of valve sealing, in particular to a valve sealing structure.

Background

Valves are devices used in fluid systems to control the direction, pressure, and flow of fluids, and are devices that allow or stop the flow of media in pipes and equipment and control the flow of media, and are widely used in our life to open and close pipelines.

The existing joint of the valve body and the valve cover is generally provided with a packing sealing structure, but the settable packing layer has no more than five layers, the sealing effect of the packing layers with more than five layers is not obviously improved, five layers of packing are connected in series through threads, the connection is simple and compact, the threads of the pipe orifice are easy to rust and difficult to detach, and the packing sealing structure is rotated during installation, is not easy to seal and is not suitable for the problem of connection sealing with a large drift diameter.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a valve sealing structure, which aims to solve the problems that the existing joint of a valve body and a valve cover usually adopts a packing sealing structure, but the settable packing layer must not exceed five layers, the sealing effect of the packing layer exceeding five layers is not obviously improved, five layers of packing are connected in series through threads, the five layers of packing are easy to rust and difficult to detach, the rotation is difficult to seal during installation, and the sealing structure is not suitable for connecting and sealing with a large diameter.

Technical proposal

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the valve sealing structure comprises a valve pump, a first flange is fixedly arranged on the upper surface of the valve pump, a fixed groove is formed in the upper surface of the first flange, and a tight connection assembly is movably clamped in the fixed groove on the upper surface of the first flange;

the tight connection assembly comprises an elastic body piece movably clamped on the inner cambered surface of the fixed groove, a trapezoid clamping part is arranged at the bottom of the lower surface of the elastic body piece, one end of the elastic body piece is connected outside the first flange plate in a penetrating mode, the lower surface of the first flange plate is lapped through the upper surface of the trapezoid clamping part, extension pressing plates are arranged in the middle of the surfaces of two sides of the elastic body piece, extension retaining plates are arranged on the same side, close to the extension pressing plates, of the elastic body piece, and a second flange plate is arranged on the upper surface of the elastic body piece.

Optionally, the upper surface of second ring flange has seted up logical groove, the logical inslot threaded connection of second ring flange has the screw rod, the one end fixed mounting of screw rod is on the upper surface of elastic body spare, the interior bottom wall fixed mounting of fixed slot has the expansion spring.

Optionally, the one end fixed mounting of extension spring has annular sealing member, arc extrusion portion has been seted up to annular sealing member's lower surface, the arc extrusion portion of annular sealing member lower surface and extension butt plate overlap joint mutually.

Optionally, the upper surface and the extension clamp plate looks swing joint of annular seal spare, annular seal spare sliding connection is on the intrados of fixed slot, the quantity of annular seal spare is four to evenly distributed in annular array's form, make the rotation of screw rod can make the elastic body spare synchronous downwards through devices such as close-coupled assembly, and the extension clamp plate that contacts the fixed slot first contact can extrude annular seal spare and make the expansion spring atress deformation of its lower surface, the displacement of extrusion annular seal spare can the lower surface with extend the butt plate and carry out extrusion contact simultaneously, the part that the one end of elastic body spare is more can be fixed through trapezoidal joint portion with first ring flange lower surface simultaneously, avoid establishing ties five layers of packing through the screw thread, dismantle difficult problem after simple compact but the easy corrosion of mouth of pipe screw, not only improve fixed effect, and improved the leakproofness.

Optionally, the surface of first ring flange and second ring flange is the through connection jointly has the piston rod, the extrados swing joint of piston rod has expansion seal assembly, expansion seal assembly includes the annular base plate of swing joint at the piston rod extrados, one side surface of annular base plate is equipped with annular expansion piece, the front end fixed mounting of annular expansion piece has compression spring.

Optionally, compression spring's one end fixed mounting has the seal lip ring, logical groove has all been seted up to the week side of seal lip ring, all fixedly connected with compression spring in the intrados logical inslot of seal lip ring, annular base plate's quantity is four to with the even swing joint of annular array form on the piston rod, make annular base plate can rotate outwards expand the form and expand the form simultaneously the annular expansion piece of front end can atress extrusion compression spring make its thrust that receives outwards expand the seal lip ring and two ring flange junction size looks adaptations in step through expanding seal assembly, rotatory and be difficult to seal when avoiding the installation, more be unsuitable for with big latus rectum connection sealed problem.

Advantageous effects

The utility model provides a valve sealing structure, which has the following beneficial effects:

1. the rotation that makes the screw rod through devices such as close-coupled assembly can make the elastic body spare synchronous downwards to contact the extension clamp plate of fixed slot contact foremost and can extrude annular seal spare and make the expansion spring atress deformation of its lower surface, the displacement of extrusion annular seal spare simultaneously can the lower surface with extend the butt plate and carry out extrusion contact, the part that the one end of elastic body spare is more can be fixed through trapezoidal joint portion with first ring flange lower surface simultaneously, avoid establishing ties five layers of packing through the screw thread, dismantle difficult problem after easy corrosion of the orificial screw thread of simple compact although, not only improve fixed effect, and improved the leakproofness.

2. The annular base plate can rotate to expand outwards and the annular expansion block at the front end can bear stress to squeeze the compression spring to enable the compression spring to bear thrust so as to synchronously expand the sealing lip ring outwards and adapt to the size of the joint of the two flanges, and the problem that the sealing lip ring is difficult to seal due to rotation during installation and is not suitable for connection and sealing with a large drift diameter is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.

FIG. 1 is a schematic cross-sectional view of the present utility model;

FIG. 2 is a schematic view of an expansion seal assembly according to the present utility model;

FIG. 3 is a schematic view of a tight junction assembly according to the present utility model;

fig. 4 is a schematic view of a partial structure of the present utility model.

In the figure: 1. a valve pump; 2. a first flange; 3. a fixing groove; 4. a tight junction assembly; 401. an elastic body member; 402. a trapezoidal clamping part; 403. an extension pressing plate; 404. an extension retaining plate; 5. a second flange; 6. a telescopic spring; 7. an annular seal; 8. a piston rod; 9. expanding the seal assembly; 901. an annular substrate; 902. an annular expansion block; 903. a compression spring; 904. and a sealing lip ring.

Detailed Description

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, proportional changes, or adjustments of size, which do not affect the efficacy of the utility model or the objects achieved, should fall within the scope of the utility model.

Referring to fig. 1 to 4, the present utility model provides a technical solution: the valve sealing structure comprises a valve pump 1, wherein a first flange plate 2 is fixedly arranged on the upper surface of the valve pump 1, a fixed groove 3 is formed in the upper surface of the first flange plate 2, and a tight connection assembly 4 is movably clamped in the fixed groove 3 on the upper surface of the first flange plate 2; the tight connection assembly 4 comprises an elastic body member 401 movably connected with the inner cambered surface of the fixed groove 3 in a clamping manner, a trapezoidal clamping portion 402 is arranged at the bottom of the lower surface of the elastic body member 401, one end of the elastic body member 401 is connected with the outer side of the first flange plate 2 in a penetrating manner, the upper surface of the trapezoidal clamping portion 402 is lapped on the lower surface of the first flange plate 2, extension pressing plates 403 are arranged in the middle of the two side surfaces of the elastic body member 401, an extension pressing plate 404 is arranged on the same side of the elastic body member 401, which is close to the extension pressing plates 403, a second flange plate 5 is arranged on the upper surface of the elastic body member 401, a through groove is formed in the upper surface of the second flange plate 5, a screw rod is connected with the through groove of the second flange plate 5 in a threaded manner, one end of the screw rod is fixedly arranged on the upper surface of the elastic body member 401, an inner bottom wall of the fixed groove 3 is fixedly provided with a telescopic spring 6, one end of the telescopic spring 6 is fixedly provided with an annular sealing member 7, an arc-shaped extrusion portion is arranged on the lower surface of the annular sealing member 7, the arc-shaped extrusion portion of the lower surface of the annular sealing member 7 is movably lapped with the extension pressing plates 404, the upper surface of the annular sealing member 7 is movably connected with the extension pressing plates 403, the annular sealing member 7 is movably connected with the extension pressing plates 7, the inner surface of the annular sealing member 7 is uniformly distributed in the annular sealing member, and the annular sealing member is in the form of an array of four annular sealing ring-shaped sealing member, and the annular sealing member is in the shape and has even number and the number of the annular sealing member and the sealing ring is in the sealing ring.

The elastic body member 401 can be synchronously downwards caused by rotation of the screw rod through the device such as the tight connection assembly 4 and the like, the extension pressing plate 403 which is contacted with the fixing groove 3 firstly can extrude the annular sealing member 7 to deform under the stress of the telescopic spring 6 on the lower surface of the annular sealing member, meanwhile, the lower surface of the annular sealing member 7 is extruded to be contacted with the extension retaining plate 404 by displacement, meanwhile, the part with more one end of the elastic body member 401 can be fixed with the lower surface of the first flange plate 2 through the trapezoid clamping part 402, five layers of filling materials are prevented from being connected in series through threads, and the problem that the five layers of filling materials are difficult to disassemble after the threads of the pipe orifice are easy to rust is solved, so that the fixing effect is improved, and the tightness is improved.

The surface of first ring flange 2 and second ring flange 5 is the through connection jointly has piston rod 8, the outer cambered surface swing joint of piston rod 8 has expansion seal assembly 9, expansion seal assembly 9 includes the annular base plate 901 of swing joint at piston rod 8 outer cambered surface, one side surface of annular base plate 901 is equipped with annular expansion piece 902, the front end fixed mounting of annular expansion piece 902 has compression spring 903, compression spring 903's one end fixed mounting has seal lip ring 904, the logical groove has all been seted up to seal lip ring 904's week side, all fixedly connected with compression spring 903 in seal lip ring 904's the intrados logical groove, annular base plate 901's quantity is four, and with the even swing joint of annular array form on piston rod 8.

The annular baseplate 901 can be rotated to expand outwards through the expansion sealing assembly 9, and the annular expansion block 902 at the front end can bear force to squeeze the compression spring 903 to enable the compression spring 903 to bear thrust so as to synchronously expand the sealing lip ring 904 outwards to be matched with the size of the joint of the two flanges, so that the problems that the annular baseplate 901 is rotated during installation and is not easy to seal and is not suitable for being connected and sealed by a large-diameter joint are avoided.

In the utility model, the working steps of the device are as follows:

the first flange 2 and the second flange 5 are connected and fixed through the elastic body member 401 in the tight connection assembly 4, the screw rod at the top of the elastic body member 401 is used for rotating and fixing at the surface through hole of the second flange 5, meanwhile, the screw rod and the elastic body member 401 are mutually fixed, the elastic body member 401 can synchronously downwards rotate, the extension pressing plate 403 firstly contacted with the fixing groove 3 can press the annular sealing member 7 to enable the expansion spring 6 on the lower surface of the annular sealing member to be stressed and deformed, meanwhile, the lower surface of the annular sealing member 7 is pressed and contacted with the extension pressing plate 404 in a pressing mode when the displacement of the annular sealing member 7 is pressed, meanwhile, the part with one end of the elastic body member 401 is fixed with the lower surface of the first flange 2 through the trapezoid clamping part 402, secondly, the rotary force drives the expansion sealing assembly 9 to outwards extend due to the rotary force, and the annular base plate 901 can rotate outwards to expand and the annular expansion block 903 at the front end is stressed to press the compression spring to expand the compression spring to enable the lip ring 904 to synchronously outwards expand and adapt to the size of the connection position of the two flanges.

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

Claims

1. Valve seal structure, including valve pump (1), its characterized in that: the upper surface of the valve pump (1) is fixedly provided with a first flange plate (2), the upper surface of the first flange plate (2) is provided with a fixed groove (3), and a tight connection assembly (4) is movably clamped in the fixed groove (3) on the upper surface of the first flange plate (2);

the tight connection assembly (4) comprises an elastic body piece (401) movably connected with the inner cambered surface of the fixed groove (3) in a clamping mode, a trapezoid clamping portion (402) is arranged at the bottom of the lower surface of the elastic body piece (401), one end of the elastic body piece (401) is connected with the outside of the first flange plate (2) in a penetrating mode, the upper surface of the elastic body piece (401) is connected with the lower surface of the first flange plate (2) in a lap joint mode through the upper surface of the trapezoid clamping portion (402), extension pressing plates (403) are arranged in the middle of the surfaces of two sides of the elastic body piece (401), extension pressing plates (404) are arranged on the same side, close to the extension pressing plates (403), of the elastic body piece (401), and a second flange plate (5) is arranged on the upper surface of the elastic body piece (401).

2. The valve sealing structure according to claim 1, wherein: the upper surface of second ring flange (5) has seted up logical groove, the logical inslot threaded connection of second ring flange (5) has the screw rod, the one end fixed mounting of screw rod is on the upper surface of elastic body spare (401), the interior bottom wall fixed mounting of fixed slot (3) has expansion spring (6).

3. The valve sealing structure according to claim 2, wherein: one end of the telescopic spring (6) is fixedly provided with an annular sealing element (7), the lower surface of the annular sealing element (7) is provided with an arc extrusion part, and the arc extrusion part of the lower surface of the annular sealing element (7) is movably lapped with the extension retaining plate (404).

4. A valve seal according to claim 3, wherein: the upper surface of annular sealing piece (7) is connected with extension clamp plate (403) movably, annular sealing piece (7) sliding connection is on the intrados of fixed slot (3), the quantity of annular sealing piece (7) is four to evenly distributed in annular array's form.

5. The valve sealing structure according to claim 1, wherein: the novel sealing device is characterized in that the surfaces of the first flange plate (2) and the second flange plate (5) are jointly connected with a piston rod (8) in a penetrating mode, an outer arc surface of the piston rod (8) is movably connected with an expansion sealing assembly (9), the expansion sealing assembly (9) comprises an annular substrate (901) movably connected with the outer arc surface of the piston rod (8), an annular expansion block (902) is arranged on one side surface of the annular substrate (901), and a compression spring (903) is fixedly arranged at the front end of the annular expansion block (902).

6. The valve seal structure of claim 5, wherein: one end fixed mounting of compression spring (903) has sealed lip ring (904), logical groove has all been seted up to the week side of sealed lip ring (904), all fixedly connected with compression spring (903) in the intrados logical inslot of sealed lip ring (904), the quantity of annular base plate (901) is four to evenly swing joint in annular array form on piston rod (8).