Improved sealing structure valve

Abstract

The improved sealing structure valve comprises a valve body, a valve cover, a valve frame and a valve rod, the valve frame is arranged at an opening in the upper end of the valve body, the valve frame is of a cylindrical structure with the two ends open, the upper portion of the valve body is in threaded connection with the valve cover, the valve frame is fixed to the upper end of the valve body through the valve cover, and a butterfly valve is arranged on the inner side of the upper portion of the valve frame. A rubber ring copper sleeve is arranged at the upper end of the butterfly valve, an inner rubber ring is arranged on the inner side of the rubber ring copper sleeve, an outer rubber ring is arranged on the outer side of the rubber ring copper sleeve, the inner rubber ring makes contact with the valve rod, and the outer rubber ring makes contact with the inner wall of the upper portion of the valve frame. The disc spring is only used for supporting the rubber ring copper sleeve, the disc spring does not directly apply elastic force to the inner rubber ring and the outer rubber ring, and even if the disc spring enters a fatigue period, the sealing effect of the inner rubber ring and the outer rubber ring cannot be affected; and the inner rubber ring and the outer rubber ring which are arranged on the rubber ring copper sleeve are stressed more uniformly, so that the time that the rubber rings enter a fatigue period can be effectively prolonged, the service life of the rubber rings is prolonged, and the sealing effect of the valve is effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve machining technical field, in particular to an improved sealing structure valve. BACKGROUND

[0002] Valve is used to open and close pipeline, controls flow direction, adjusts and controls the parameter (temperature, pressure and flow) of delivery medium's pipeline accessory, has the functions such as cut-off, regulation, flow guide, prevent backflow, pressure stabilization, shunt or overflow pressure relief, etc. The valve for fluid control system, from the most simple cut-off valve to the various valves used in the extremely complex automatic control system, its variety and specification are quite numerous.

[0003] At present, the upper inner side of the valve frame in the valve is sealed by setting the structure of disc spring and sealing ring packing, the sealing ring packing is deformed under the action of the disc spring to make the sealing ring packing tightly adhere to the valve stem and the inner wall of the valve frame to realize sealing, the sealing ring packing and the disc spring both have fatigue period, after the disc spring enters the fatigue period, the elastic force will decrease, the deformation of the sealing ring packing reduces, the sealing effect will be poor, and the sealing ring packing is deformed for a long time under the extrusion of the disc spring, the time of entering the fatigue period is greatly accelerated, and the practical life of the sealing ring packing is very short, resulting in the shortening of the service period of the valve.

[0004] Therefore, the skilled in the art provides an improved sealing structure valve to solve the problems in the background. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the above technical problems, the utility model provides an improved sealing structure valve, including valve body, valve cover, valve frame and valve rod, the upper end opening of valve body is provided with valve frame, the valve frame is the cylindrical structure of both ends opening, the upper part of valve body is connected with valve cover, and the valve cover fixes the valve frame on the upper end of valve body, the upper inner side of valve frame is provided with butterfly valve, the upper end of butterfly valve is provided with rubber ring copper bush, the inner side of rubber ring copper bush is provided with inner rubber ring, the outer side of rubber ring copper bush is provided with outer rubber ring, the inner rubber ring contacts valve rod, and the outer rubber ring contacts the upper inner wall of valve frame, the upper outer side of valve frame is connected with sealing cover, the inner side of lower part of valve frame is connected with inner and outer silk copper bush, the valve rod is installed in the inside of valve frame, and the lower part of valve rod is provided with screw thread part two, and screw thread part two cooperates with the internal thread of inner and outer silk copper bush.

[0006] Preferably, the upper end opening of the valve body is provided with a downward positioning step, and the lower outer side of the valve frame is provided with a flange matched with the positioning step, so that the positioning step facilitates the positioning and installation of the valve frame.

[0007] Preferably, the valve rod comprises a rod body, the valve rod is a stepped shaft rod structure, a small diameter section end of the valve rod is provided with a screw thread part one, the screw thread part one is used for fixedly installing a rotating handle of the valve, and a large diameter section of the rod body is provided with a screw thread part two, and the screw thread part two cooperates with the internal thread of the inner and outer silk copper bush.

[0008] Preferably, symmetric notches are arranged at the lower end of the inner and outer copper sleeve, an iron drill or a blade of a spade is placed at the notches, and the handle of the iron drill or the spade is hit by a hammer, so that the blade of the iron drill or the spade extrudes the internal thread at the corresponding notch of the lower part of the valve frame, and the internal thread is deformed and concentrated in the notch, the inner and outer copper sleeve is fixed, the inner and outer copper sleeve does not rotate relative to the valve frame when the valve rod is rotated, and normal work of the valve is ensured.

[0009] Preferably, a sealing groove one is arranged at the inner side of the rubber ring copper sleeve, and an inner rubber ring is arranged in the sealing groove one; a sealing groove two is arranged at the outer side of the rubber ring copper sleeve, and an outer rubber ring is arranged in the sealing groove two; the inner rubber ring and the outer rubber ring are made of rubber, and good sealing effect can be achieved.

[0010] Preferably, a sealing ring is arranged at the upper end of the flange at the inner side of the valve cover, and the sealing ring seals the connection between the valve frame and the valve body, so that good sealing effect is achieved.

[0011] The technical effects and advantages of the utility model are as follows:

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The disc spring is arranged to support the rubber ring copper sleeve, the disc spring does not directly apply elastic force to the inner rubber ring and the outer rubber ring, even if the disc spring enters the fatigue period, the sealing effect of the inner rubber ring and the outer rubber ring is not affected; and the inner rubber ring and the outer rubber ring arranged on the rubber ring copper sleeve are more uniformly stressed, the time of the rubber ring entering the fatigue period can be effectively prolonged, the service life of the rubber ring is prolonged, and the sealing effect of the valve is effectively ensured.

[0014] 2. The lower end of the inner and outer copper sleeve is arranged with symmetric notches, an iron drill or a blade of a spade is placed at the notches, and the handle of the iron drill or the spade is hit by a hammer, so that the blade of the iron drill or the spade extrudes the internal thread at the corresponding notch of the lower part of the valve frame, and the internal thread is deformed and concentrated in the notch, the inner and outer copper sleeve is fixed, the inner and outer copper sleeve does not rotate relative to the valve frame when the valve rod is rotated, and normal work of the valve is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a local structure schematic view of the improved sealing structure valve provided by the embodiment of the application;

[0016] Figure 2 is a structure view of the valve frame, the rubber ring copper sleeve and the inner and outer copper sleeve in the improved sealing structure valve provided by the embodiment of the application;

[0017] Figure 3 is a local structure view of the valve rod in the improved sealing structure valve provided by the embodiment of the application;

[0018] Figure 4 is a structure diagram of the improved sealing structure valve of the embodiment of the present application;

[0019] Figure 5 is a structure diagram of the improved sealing structure valve of the embodiment of the present application.

[0020] Wherein: the valve body 1, the valve cover 2, the inner and outer thread copper sleeve 3, the valve holder 4, the disc spring 5, the rubber ring copper sleeve 6, the sealing cover 7, the valve rod 8, the rod body 81, the threaded part one 82, the threaded part two 83, the inner rubber ring 9, the outer rubber ring 10, the flange 11, the gap 12, the sealing ring 13. DETAILED DESCRIPTION

[0021] The utility model will be further explained in detail in combination with specific implementation. The embodiment of the utility model is given for example and description, and is not exhaustive or limits the utility model to the disclosed form. Many modifications and changes are obvious to those skilled in the art. The embodiment is selected and described to better illustrate the principle and practical application of the utility model, and enable those skilled in the art to understand the utility model to design various embodiments with various modifications suitable for specific purposes.

[0022] Embodiment 1

[0023] Please refer to Figures 1-5 In the embodiment, an improved sealing structure valve is provided, which comprises a valve body 1, a valve cover 2, a valve holder 4 and a valve rod 8. Since the valve body is not the key point of the present application, the structure of the valve body 1 is not shown in detail in the drawings, and is not described in detail in the specification. The valve holder 4 is provided at the upper end opening of the valve body 1, and has a cylindrical structure with two open ends. The valve cover 2 is threadedly connected to the upper part of the valve body 1, and fixes the valve holder 4 at the upper end of the valve body 1. The disc spring 5 is arranged at the upper inner side of the valve holder 4. The rubber ring copper sleeve 6 is arranged at the upper end of the disc spring 5. The inner rubber ring 9 is arranged at the inner side of the rubber ring copper sleeve 6. The outer rubber ring 10 is arranged at the outer side of the rubber ring copper sleeve 6. The inner rubber ring 9 contacts the valve rod 8. The outer rubber ring 10 contacts the inner wall of the upper part of the valve holder 4. The sealing cover 7 is threadedly connected to the outer side of the upper part of the valve holder 4. The inner and outer thread copper sleeve 3 is threadedly connected to the inner side of the lower part of the valve holder 4. The valve rod 8 is installed in the valve holder 4. The threaded part two 83 is arranged at the lower part of the valve rod 8, and cooperates with the inner thread of the inner and outer thread copper sleeve. The disc spring 6 is arranged only for supporting the rubber ring copper sleeve 6, and does not directly apply elastic force to the inner rubber ring 9 and the outer rubber ring 10. Even if the disc spring 6 enters the fatigue period, it will not affect the sealing effect of the inner rubber ring 9 and the outer rubber ring 19. Moreover, the inner rubber ring 9 and the outer rubber ring 10 arranged on the rubber ring copper sleeve 6 are more uniformly stressed, which can effectively prolong the time of the rubber ring entering the fatigue period, prolong the service life of the rubber ring, and effectively protect the sealing effect of the valve.

[0024] The valve body 1 is provided with a downward positioning step at the opening of the upper end, the valve frame 4 is provided with a flange 11 at the outer side of the lower part, and the positioning step is arranged to facilitate the positioning and installation of the valve frame 4.

[0025] The valve rod 8 comprises a rod body 81, and the valve rod 8 is a stepped shaft structure, the small-diameter section of the valve rod 8 is provided with a threaded part one 82, the threaded part one 82 is used for fixing and installing a rotating handle of the valve, and the large-diameter section of the rod body 81 is provided with a threaded part two 83, and the threaded part two 83 is matched with the internal thread of the inner-outer copper sleeve 3.

[0026] The inner-outer copper sleeve 3 is provided with symmetrical notches 12 at the lower end, the notches 12 are passed through by the blade of an iron pick or a shovel, the handle of the iron pick or the shovel is hit by a hammer, the blade of the iron pick or the shovel is extruded to the internal thread of the lower part of the valve frame 4 corresponding to the notches 12, and the internal thread is deformed and concentrated into the notches, so that the inner-outer copper sleeve 3 is fixed, the inner-outer copper sleeve 3 does not rotate relative to the valve frame 4 when the valve rod 8 rotates, and normal work of the valve is ensured.

[0027] The inner-outer copper sleeve 3 is provided with symmetrical notches 12 at the lower end, the notches 12 are passed through by the blade of an iron pick or a shovel, the handle of the iron pick or the shovel is hit by a hammer, the blade of the iron pick or the shovel is extruded to the internal thread of the lower part of the valve frame 4 corresponding to the notches 12, and the internal thread is deformed and concentrated into the notches, so that the inner-outer copper sleeve 3 is fixed, the inner-outer copper sleeve 3 does not rotate relative to the valve frame 4 when the valve rod 8 rotates, and normal work of the valve is ensured.

[0028] The inner-outer copper sleeve 3 is provided with symmetrical notches 12 at the lower end, the notches 12 are passed through by the blade of an iron pick or a shovel, the handle of the iron pick or the shovel is hit by a hammer, the blade of the iron pick or the shovel is extruded to the internal thread of the lower part of the valve frame 4 corresponding to the notches 12, and the internal thread is deformed and concentrated into the notches, so that the inner-outer copper sleeve 3 is fixed, the inner-outer copper sleeve 3 does not rotate relative to the valve frame 4 when the valve rod 8 rotates, and normal work of the valve is ensured.

[0029] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative labor should belong to the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, such as without special description and limitation, are implemented according to the conventional means in the art.

Claims

1. An improved seal structure valve comprising a valve body (1), a bonnet (2), a valve frame (4) and a valve stem (8), characterized in that, The valve body (1) upper end opening is provided with a valve frame (4), the valve frame (4) is a two-end opening cylindrical structure, the upper part of the valve body (1) is threadedly connected with a valve cover (2), the valve cover (2) fixes the valve frame (4) on the upper end of the valve body (1), the upper inner side of the valve frame (4) is provided with a butterfly valve (5), the upper end of the butterfly valve (5) is provided with a rubber ring copper sleeve (6), the inner side of the rubber ring copper sleeve (6) is provided with an inner rubber ring (9), the outer side of the rubber ring copper sleeve (6) is provided with an outer rubber ring (10), the inner rubber ring (9) contacts the valve stem (8), and the outer rubber ring (10) contacts the inner wall of the upper part of the valve frame (4), the upper outer side of the valve frame (4) is threadedly connected with a sealing cover (7), the inner side of the lower part of the valve frame (4) is threadedly connected with an inner-outer thread copper sleeve (3), the valve stem (8) is installed in the valve frame (4), and the lower part of the valve stem (8) is provided with a threaded part two (83), which is matched with the inner thread of the inner-outer thread copper sleeve.

2. The improved seal structure valve according to claim 1, wherein The valve body (1) upper end opening is provided with a valve frame (4), the valve frame (4) is a two-end opening cylindrical structure, the upper part of the valve body (1) is threadedly connected with a valve cover (2), the valve cover (2) fixes the valve frame (4) on the upper end of the valve body (1), the upper inner side of the valve frame (4) is provided with a butterfly valve (5), the upper end of the butterfly valve (5) is provided with a rubber ring copper sleeve (6), the inner side of the rubber ring copper sleeve (6) is provided with an inner rubber ring (9), the outer side of the rubber ring copper sleeve (6) is provided with an outer rubber ring (10), the inner rubber ring (9) contacts the valve stem (8), and the outer rubber ring (10) contacts the inner wall of the upper part of the valve frame (4), the upper outer side of the valve frame (4) is threadedly connected with a sealing cover (7), the inner side of the lower part of the valve frame (4) is threadedly connected with an inner-outer thread copper sleeve (3), the valve stem (8) is installed in the valve frame (4), and the lower part of the valve stem (8) is provided with a threaded part two (83), which is matched with the inner thread of the inner-outer thread copper sleeve.

3. The improved seal structure valve according to claim 1, wherein The valve body (1) upper end opening is provided with a valve frame (4), the valve frame (4) is a two-end opening cylindrical structure, the upper part of the valve body (1) is threadedly connected with a valve cover (2), the valve cover (2) fixes the valve frame (4) on the upper end of the valve body (1), the upper inner side of the valve frame (4) is provided with a butterfly valve (5), the upper end of the butterfly valve (5) is provided with a rubber ring copper sleeve (6), the inner side of the rubber ring copper sleeve (6) is provided with an inner rubber ring (9), the outer side of the rubber ring copper sleeve (6) is provided with an outer rubber ring (10), the inner rubber ring (9) contacts the valve stem (8), and the outer rubber ring (10) contacts the inner wall of the upper part of the valve frame (4), the upper outer side of the valve frame (4) is threadedly connected with a sealing cover (7), the inner side of the lower part of the valve frame (4) is threadedly connected with an inner-outer thread copper sleeve (3), the valve stem (8) is installed in the valve frame (4), and the lower part of the valve stem (8) is provided with a threaded part two (83), which is matched with the inner thread of the inner-outer thread copper sleeve.

4. The improved seal structure valve according to claim 1, wherein The inner-outer thread copper sleeve (3) is provided with a symmetric notch (12) at the lower end, and the notch (12) is placed through the blade of an iron pick or a shovel by hitting the handle of the iron pick or the shovel with a hammer, so that the blade of the iron pick or the shovel extrudes the inner thread of the valve frame (4) at the corresponding notch (12) of the lower part, and is deformed and concentrated into the notch, so that the inner-outer thread copper sleeve (3) is fixed, and the inner-outer thread copper sleeve (3) does not rotate relative to the valve frame (4) when the valve stem (8) is rotated, so as to ensure the normal work of the valve.

5. The improved seal structure valve according to claim 1, wherein The rubber ring copper sleeve (6) is provided with a sealing groove one in the inner side, and the inner rubber ring (9) is arranged in the sealing groove one, the rubber ring copper sleeve (6) is provided with a sealing groove two in the outer side, and the outer rubber ring (10) is arranged in the sealing groove two, and the inner rubber ring (9) and the outer rubber ring (10) are both made of rubber material, which can achieve good sealing effect.

6. The improved seal structure valve according to claim 1, wherein The inner side of the valve cover (2) is provided with a sealing ring (13) at the upper end of the flange (11), the sealing ring (13) seals the connection between the valve frame (4) and the valve body (1), and the sealing ring (13) has good sealing effect.

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