CN215334501U - Angle valve - Google Patents

Abstract

The utility model relates to an oblique angle valve, which is characterized in that a threaded sleeve is arranged at the end part of a valve hole, one end of a valve rod penetrates through the threaded sleeve and a sealing piece arranged in the valve hole to enable the valve rod to be in dynamic sealing fit with a valve seat and to be fixedly connected with a valve core, the other end of the valve rod is provided with a driving thread and is in threaded connection with the threaded sleeve, and the end part of the valve rod is arranged outside the threaded sleeve and is connected with an operating mechanism. The utility model has the advantages that the sealing element is arranged in the valve body, and the driving thread of the valve rod is arranged outside the sealing element and is isolated from the medium, so that the thread sleeve and the valve seat are in a split structure, the production and the assembly are easy, meanwhile, the corrosion pollution of the medium caused by the direct contact of the driving thread on the valve rod and the medium can be avoided, the sanitary use requirement cannot be met, meanwhile, the sanitary dead angle does not exist in the valve body, and the use sanitation of the bevel valve is ensured; and secondly, the phenomenon that the driving thread on the valve rod is seized with the thread on the thread sleeve can be avoided, the service life of the valve body is prolonged, and the maintenance cost is reduced.

Description

Angle valve

Technical Field

The utility model relates to a valve, in particular to an oblique angle valve which is mainly applied to the field of valve production.

Background

The angle valve mainly comprises a valve body, a valve seat and a valve rod which is arranged in the valve seat and spirally rises or falls along the valve seat, one end of the valve rod is arranged in the valve body and fixedly connected with a valve core, and the other end of the valve rod is connected with an operating mechanism. In order to facilitate assembly or disassembly and replacement of a valve sealing element, a driving screw thread is arranged at a position, close to a valve body, on a valve rod of the existing bevel valve, a thread sleeve is correspondingly arranged in a valve seat, and the sealing element is sleeved above the driving screw thread and is pressed and fixed by a cover valve, so that the use sealing performance of the bevel valve is ensured or the replacement of the sealing element is facilitated. Although the structure can ensure the sealing performance and the convenient replacement of the bevel valve, the bevel valve has some defects, for example, the sealing element is arranged above the driving screw thread of the valve rod, so that the driving screw thread is inevitably directly communicated with the valve cavity of the valve body, and as the driving screw thread is basically made of steel materials, when the valve rod spirally rises and falls to open or close the valve, powder scraps are generated more or less or after the valve rod is used for a period of time, the surface of the driving screw thread is rusted under the influence of a medium, so that the medium can be polluted, the bevel valve cannot be applied to the fields of food, medicines and the like, and cannot meet the use requirement of sanitation; and seizure of the driving thread due to corrosion, correspondingly increases the operating torque of the valve stem. Secondly, the existing thread bush and the valve seat are basically of an integrated structure, the production difficulty is high, and when the driving thread is corroded and damaged, the thread bush is not easy to replace and the replacement cost is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides the bevel valve which can not only prevent the driving screw teeth from directly contacting with a medium, but also improve the sanitary performance of the bevel valve; moreover, the threaded sleeve is split, so that the threaded sleeve is convenient to produce, process and assemble and convenient to replace, and the maintenance cost is reduced.

In order to solve the technical problems, the technical scheme adopted by the utility model is that the bevel valve comprises a valve body, a valve seat and a valve rod, wherein one end of the valve rod is arranged in the valve body and connected with a valve core, and the other end of the valve rod is connected with an operating mechanism; the valve seat is provided with a valve hole, a threaded sleeve is arranged at the end part of the valve hole, one end of the valve rod penetrates through the threaded sleeve and a sealing piece arranged in the valve hole to enable the valve rod to be matched with the valve seat in a dynamic sealing mode and to be fixedly connected with the valve core, the other end of the valve rod is provided with a driving thread and is in threaded connection with the threaded sleeve, the end part of the valve rod is arranged outside the threaded sleeve and is connected with an operating mechanism, and the valve rod can spirally rise or fall along the threaded sleeve under the action of external force to drive the valve core to open or close the valve body.

Preferably, the valve rod further comprises a driving end and a connecting end, two ends of the driving screw thread are respectively connected with the driving end and the connecting end, and the outer diameter of the driving screw thread is larger than that of the driving end and that of the connecting end; the sealing element is arranged below the driving screw thread and sleeved outside the connecting end to enable the valve rod to be in dynamic sealing fit with the valve seat.

Preferably, a support is arranged in the center of the valve seat, and the valve hole is arranged in the support; the middle of the peripheral side wall of the threaded sleeve is provided with an annular clamping table to divide the threaded sleeve into two parts, the lower end of the threaded sleeve is inserted into the valve hole to enable the annular clamping table to be attached to the end face of the valve hole, the valve cover is sleeved at the upper end of the threaded sleeve and is in threaded connection with the peripheral side wall of the support, and the valve cover is pressed on the annular clamping table to enable the threaded sleeve to be fixed with the support.

Preferably, the support comprises an upper support and a lower support, the valve hole penetrates through the upper support and the lower support, the connecting end of the valve rod penetrates through the upper support and the lower support to be fixedly connected with the valve core, the driving screw thread is arranged in the upper support to be in threaded connection with the threaded sleeve, and the driving end penetrates through the threaded sleeve to be connected with the driving mechanism.

Preferably, the end part of the lower bracket is provided with a gland which is integrated with the lower bracket into a whole and has a horn-shaped section, the gland is provided with a through hole, the diameter of the through hole is smaller than that of the valve hole, the bottom end of the sealing element is attached to the gland, and the other end of the sealing element is elastically connected with the threaded sleeve in an extrusion manner.

Preferably, the sealing element comprises a sealing seat, sealing filler, a gasket and an extrusion spring, the sealing seat is arranged in the lower support, the section of the lower end of the sealing seat is matched with that of the gland, and a first sealing groove and a first sealing ring which enable the connecting end of the valve rod and the sealing seat to form dynamic sealing are arranged in the sealing seat; the sealing packing is arranged above the sealing seat, and the two ends of the extrusion spring respectively extrude the gasket to be abutted and press-fitted with the bottom end of the threaded sleeve and the upper end face of the sealing packing.

Preferably, a convex ring is arranged at one end port of the valve seat connected with the valve body, a sealing gasket is sleeved outside the convex ring, and the sealing gasket is attached to the inner wall of the valve body to form sealing connection between the valve seat and the valve body; the valve seat is fixedly connected with the valve body through threads or bolts.

Preferably, a second sealing ring is arranged at one end port of the threaded sleeve arranged in the support, and the second sealing ring enables the valve rod and the threaded sleeve to form dynamic sealing fit.

Preferably, a regular hexagonal driving block is arranged on the upper surface of the valve seat at the joint of the upper support and the valve seat, and the regular hexagonal driving block, the upper support and the valve seat are of an integral structure.

The utility model has the advantages that the sealing element is arranged in the valve body, and the driving thread of the valve rod is arranged outside the sealing element and is isolated from the medium, so that the thread sleeve and the valve seat are in a split structure, the production and the assembly are easy, meanwhile, the corrosion pollution of the medium caused by the direct contact of the driving thread on the valve rod and the medium can be avoided, the sanitary use requirement cannot be met, meanwhile, the sanitary dead angle does not exist in the valve body, and the use sanitation of the bevel valve is ensured; and secondly, the phenomenon that the driving thread on the valve rod is seized with the thread on the thread sleeve can be avoided, the service life of the valve body is prolonged, and the maintenance cost is reduced.

Drawings

FIG. 1 is a cross-sectional view of a miter valve according to an embodiment of the present invention

FIG. 2 is a front perspective view of a valve seat according to an embodiment of the present invention

FIG. 3 is a bottom perspective view of a valve seat in an embodiment of the present invention

FIG. 4 is a perspective view of a thread bush according to an embodiment of the present invention

FIG. 5 is a perspective view of a valve stem according to an embodiment of the present invention

Detailed Description

The embodiments of the utility model will be further explained with reference to the drawings in which:

as shown in fig. 1-5, the utility model relates to an oblique angle valve, which comprises a valve body 1, a valve seat 2 and a valve rod 3, wherein one end of the valve rod 3 is arranged in the valve body 1 and connected with a valve core 4, and the other end is connected with an operating mechanism 5; the valve seat 2 is provided with a valve hole 21, a thread bush 6 is arranged at the end part of the valve hole 21, one end of the valve rod 3 penetrates through the thread bush 6 and a sealing element 7 arranged in the valve hole 21 to enable the valve rod 3 to be in dynamic sealing fit with the valve seat 2 and to be fixedly connected with the valve core 4, the other end of the valve rod 3 is provided with a driving thread 32 and to be in threaded connection with the thread bush 6, the end part of the valve rod 3 is arranged outside the thread bush 6 and is connected with an operating mechanism 5, and the valve rod 3 can spirally ascend or descend along the thread bush 6 to drive the valve core 4 to open or close the valve body 1 under the action of external force. Conventional valve seals are provided at the junction of the valve body 1, making it easier to replace the seal 7 and find leaks, and although such seals are easy to replace and identify, they are not suitable for bevel valves used in certain applications where sanitary conditions are extremely stringent. Therefore, the traditional sealing mode of the valve is changed, the sealing element 7 is arranged in the valve body 1, and the driving thread 32 of the valve rod 3 is arranged outside the sealing element 7 and isolated from the medium, so that the thread sleeve 6 and the valve seat 2 are in a split structure, the production and the assembly are easy, meanwhile, the driving thread 32 on the valve rod 3 can be prevented from being directly contacted with the medium to cause corrosion and pollution to the medium, the sanitary use requirement cannot be met, meanwhile, the sanitary dead angle does not exist in the valve body 1, and the use sanitation of the bevel valve is ensured; secondly, the phenomenon of seizure of the driving thread 32 on the valve rod 3 and the thread on the threaded sleeve 6 can be avoided, the service life of the valve body 1 is prolonged, and the maintenance cost is reduced.

In order to facilitate the valve rod 3 to spirally ascend and descend along the threaded sleeve 6 to control the opening and closing of the valve core 4, the valve rod 3 further comprises a driving end 31 and a connecting end 33, two ends of the driving thread 32 are respectively connected with the driving end 31 and the connecting end 33, and the outer diameter of the driving thread 32 is larger than that of the driving end 31 and that of the connecting end 33; the sealing element 7 is arranged below the driving screw thread 32 and sleeved outside the connecting end 33, so that the valve rod 3 is in dynamic sealing fit with the valve seat 2. The valve rod 3 is segmented, the driving end 31 is used for being connected with a driving mechanism, the driving threads 32 can be in threaded fit with the threaded sleeve 6, and the connecting end 33 can be used for installing the sealing piece 7 and the fixed valve core 4, so that when the valve is used, the driving threads 32 are prevented from being directly contacted with a medium in the valve body 1, the sanitary requirement of the medium is guaranteed, the threads are prevented from being bitten by the driving threads 32 due to corrosion, and the service lives of the valve rod 3 and the threaded sleeve 6 are prolonged. Certainly, from the use perspective, the driving end 31 may not be provided, the driving thread 32 is directly used to be connected and fixed with the driving mechanism, but the driving end 31 and the connecting end 33 with the diameter smaller than that of the driving thread 32 are provided, so that the friction force can be reduced, the operation torque of the valve rod 3 and the power of the driving mechanism 5 can be reduced, the cost is reduced, and the remote or real-time online control of the bevel valve by using an automation device can be conveniently realized. In the actual use process, the driving mechanism is a hand wheel, of course, a stepper motor and a speed reducing mechanism can be adopted to realize automatic control, and the specific adoption mode can be determined according to the requirements of users.

In order to facilitate the installation of the threaded sleeve 6 and the disassembly and maintenance of the bevel valve, a bracket 20 is arranged at the center of the valve seat 2, and a valve hole 21 is arranged in the bracket 20; the middle of the peripheral side wall of the threaded sleeve 6 is provided with an annular clamping table 61 to divide the threaded sleeve 6 into two parts, the lower end of the annular clamping table is inserted into the valve hole 21 to enable the annular clamping table 61 to be attached to the end face of the valve hole 21, the valve cover 8 is sleeved at the upper end of the threaded sleeve 6 and is in threaded connection with the peripheral side wall of the support 20, and the valve cover 8 is pressed on the annular clamping table 61 to enable the threaded sleeve 6 to be fixed with the support 20. Through setting up support 20 on disk seat 2 to set up annular ka tai 61 on thread bush 6, when the equipment, just can be directly insert the valve opening 21 of support 20 with the one end of thread bush 6 in, simultaneously, press through valve gap 8 and put on annular ka tai 61 and with support 20 threaded connection, thereby make thread bush 6 form fixedly with support 20, the benefit of the equipment is higher, when needs maintenance or maintenance, then can be more quick convenient dismantlement.

In order to facilitate installation and maintenance of the threaded sleeve 6 and the sealing element 7, the bracket 20 comprises an upper bracket 201 and a lower bracket 202, the valve hole 21 penetrates through the upper bracket 201 and the lower bracket 202, the connecting end 33 of the valve rod 3 penetrates through the upper bracket 201 and the lower bracket 202 to be fixedly connected with the valve core 4, the driving thread 32 is arranged in the upper bracket 201 and is in threaded connection with the threaded sleeve 6, and the driving end 31 penetrates through the threaded sleeve 6 to be connected with a driving mechanism. Through establishing support 20 into two sections, one end is located outside disk seat 2, and the other end is arranged in valve body 1, when assembling, just can install sealing member 7 in lower carriage 202, avoids the drive thread 32 of valve rod 3 to contact the medium, prevents effectively that the medium from corroding the thread, avoids the phenomenon such as the thread rusts or the thread is stung, promotes the life of bevel valve and guarantees that bevel valve can satisfy the sanitary operation requirement in fields such as food, medicine. The threaded sleeve 6 is arranged in the upper bracket 201, so that the assembly benefit is improved while the assembly is convenient; and when a fault occurs, the valve is easier to disassemble, and the maintenance and daily maintenance of the bevel valve are convenient.

In order to ensure the sealing performance between the valve seat 2 and the valve rod 3, the end of the lower bracket 202 is provided with a gland 203 which is integrated with the lower bracket 202 and has a horn-shaped section, the gland 203 is provided with a through hole 204, the diameter of the through hole 204 is smaller than that of the valve hole 21, the bottom end of the sealing element 7 is attached to the gland 203, and the other end is elastically connected with the thread sleeve 6 in an extrusion manner. By arranging the gland 203 with the horn-shaped cross section at the bottom end of the lower support 202, the sealing element 7 is prevented from directly contacting with a medium while the sealing element 7 is prevented from falling into the valve body 1, and the sanitary safety of the medium is improved. And the extrusion effect on the sealing element 7 during the assembly of the thread bush 6 can be ensured, and the leakage of the bevel valve is effectively prevented.

In order to ensure the sealing performance of the bevel valve under different medium pressure conditions, the sealing element 7 comprises a sealing seat 71, a sealing packing 72, a gasket 73 and an extrusion spring 74, the sealing seat 71 is arranged in the lower support 202, the section of the lower end of the sealing seat is matched with the section of the gland 203, and a first sealing groove and a first sealing ring 711 which enable the connecting end 33 of the valve rod 3 and the sealing seat 71 to form dynamic sealing are arranged in the sealing seat 71; the packing 72 is disposed above the seat 71, and two ends of the spring 74 press the gasket 73 against the bottom end of the threaded sleeve 6 and the upper end surface of the packing 72. By arranging the first sealing ring 711 on the sealing seat 71, the first sealing ring 711 can be used for forming dynamic sealing between the valve rod 3 and the valve seat 2, so that the sealing performance of the valve rod 3 in the process of spiral rising or descending under the driving of a driving mechanism is ensured, and the use safety of the bevel valve in opening and closing is effectively avoided; and the extrusion spring 74 is arranged between the sealing packing 72 and the thread bush 6, so that the elastic force of the extrusion spring 74 can be used for adapting to media with different pressures in the valve body 1, the automatic tensioning of the sealing packing 72 is realized, and the sealing safety of the bevel valve is ensured. The provision of the spacer 73 effectively prevents the biasing force of the pressing spring 74 to one side from causing the sealing packing 72 to fail.

The valve seat 2 of the conventional bevel valve is hermetically connected with the valve body 1 at the port of the valve body 1, so that a medium is easily in threaded contact with the valve seat 2 and the valve body 1, threads are rusted, the medium is polluted, the threads of the valve seat 2 are seized, the service life of the bevel valve is shortened, and in order to avoid the corrosion of the threads in the valve seat 2 and the valve body 1 caused by the medium, a convex ring 22 is arranged at the port of one end of the valve seat 2 connected with the valve body 1, a sealing gasket 23 is sleeved outside the convex ring 22, and the sealing gasket 23 is attached to the inner wall of the valve body 1 to enable the valve seat 2 to be hermetically connected with the valve body 1; the valve seat 2 is fixedly connected with the valve body 1 through threads or bolts. Set up bulge loop 22 through the port department at disk seat 2 to at bulge loop 22 department installation sealed 23, the contact of sealed 23 and medium of usable bulge loop 22 isolation not only like this, but also can effectively guarantee that the screw tooth in disk seat 2 and the valve body 1 takes place the corrosion, guarantees the health and the safety of medium in the valve body 1, thereby makes the bevel valve can be applicable to fields such as food, medicine of strict hygienic requirement.

In order to ensure the sealing performance of the bevel valve to the maximum extent, a second sealing ring 24 is arranged at one end port of the threaded sleeve 6 arranged in the bracket 20, and the second sealing ring 24 enables the valve rod 3 and the threaded sleeve 6 to form dynamic sealing fit. Through set up second sealing washer 24 in thread bush 6 bottom to make second sealing washer 24 cover put and make the link 33 of valve rod 3 and thread bush 6 form the movive seal cooperation outside the link 33 of valve rod 3, can form three sealed guarantees with first sealing member 7 and sealing packing 72 to valve rod 3 like this, the sealing performance of furthest's assurance bevel valve. In actual production, the second sealing ring 24 is placed above the internal thread of the threaded sleeve 6 and forms a dynamic sealing fit with the connecting end 33 of the valve rod 3.

In order to facilitate the assembly and disassembly maintenance of the valve seat 2, a regular hexagonal driving block 25 is arranged on the upper surface of the valve seat 2 at the joint of the upper bracket 201 and the valve seat 2, and the regular hexagonal driving block 25, the upper bracket 201 and the valve seat 2 are of an integral structure. The surface of the valve seat 2 is provided with the regular hexagonal driving block 25, so that the strength of the valve seat 2 can be improved, meanwhile, the valve seat 2 can be conveniently fastened and disassembled during assembly or maintenance, and the assembly or disassembly benefit is improved; of course, the regular hexagonal driving block 25 may also be configured as a square or a pentagon, which only enables tools such as a wrench to be difficult to slide, and the specific configuration may be determined according to actual conditions or user requirements.

The above examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims (9)

1. An oblique angle valve comprises a valve body, a valve seat and a valve rod, wherein one end of the valve rod is arranged in the valve body and connected with a valve core, and the other end of the valve rod is connected with an operating mechanism; the valve is characterized in that a valve hole is formed in the valve seat, a threaded sleeve is installed at the end part of the valve hole, one end of the valve rod penetrates through the threaded sleeve and a sealing piece installed in the valve hole to enable the valve rod to be matched with the valve seat in a dynamic sealing mode and to be fixedly connected with the valve core, a driving thread is arranged at the other end of the valve rod and is in threaded connection with the threaded sleeve, the end part of the valve rod is arranged outside the threaded sleeve and is connected with an operating mechanism, and the valve rod can spirally ascend or descend along the threaded sleeve to drive the valve core to open or close the valve body under the action of external force.

2. The bevel valve according to claim 1, wherein the valve rod further comprises a driving end and a connecting end, two ends of the driving thread are respectively connected with the driving end and the connecting end, and the outer diameter of the driving thread is larger than that of the driving end and that of the connecting end; the sealing element is arranged below the driving screw thread and sleeved outside the connecting end to enable the valve rod to be in dynamic sealing fit with the valve seat.

3. A miter valve according to claim 1 or 2, wherein a holder is provided at the center of the valve seat, and the valve hole is provided in the holder; the middle of the peripheral side wall of the threaded sleeve is provided with an annular clamping table to divide the threaded sleeve into two parts, the lower end of the threaded sleeve is inserted into the valve hole to enable the annular clamping table to be attached to the end face of the valve hole, the valve cover is sleeved at the upper end of the threaded sleeve and is in threaded connection with the peripheral side wall of the support, and the valve cover is pressed on the annular clamping table to enable the threaded sleeve to be fixed with the support.

4. The bevel valve according to claim 3, wherein the bracket comprises an upper bracket and a lower bracket, the valve hole penetrates through the upper bracket and the lower bracket, the connecting end of the valve rod penetrates through the upper bracket and the lower bracket to be fixedly connected with the valve core, the driving screw thread is arranged in the upper bracket to be in threaded connection with the threaded sleeve, and the driving end penetrates through the threaded sleeve to be connected with the driving mechanism.

5. The oblique angle valve as claimed in claim 4, wherein the lower bracket has a bell-shaped gland at its end, the gland has a through hole with a diameter smaller than that of the valve hole, the bottom of the sealing member is engaged with the gland, and the other end of the sealing member is elastically connected with the threaded sleeve.

6. The bevel valve according to claim 5, wherein the sealing element comprises a sealing seat, sealing filler, a gasket and an extrusion spring, the sealing seat is arranged in the lower bracket, the lower end section of the sealing seat is matched with the section of the gland, and a first sealing groove and a first sealing ring which enable the connecting end of the valve rod and the sealing seat to form dynamic sealing are arranged in the sealing seat; the sealing packing is arranged above the sealing seat, and the two ends of the extrusion spring respectively extrude the gasket to be abutted and press-fitted with the bottom end of the threaded sleeve and the upper end face of the sealing packing.

7. The bevel valve according to claim 6, wherein a convex ring is arranged at one end port of the valve seat connected with the valve body, a sealing gasket is sleeved outside the convex ring, and the sealing gasket is attached to the inner wall of the valve body to enable the valve seat to be in sealing connection with the valve body; the valve seat is fixedly connected with the valve body through threads or bolts.

8. A miter valve according to claim 7, wherein a second seal is provided at the end of the threaded sleeve which is received in the bracket, the second seal providing a dynamic sealing engagement between the valve stem and the threaded sleeve.

9. The bevel valve as claimed in claim 8, wherein a hexagonal driver block is provided on the upper surface of the valve seat at the junction of the upper bracket and the valve seat, and is integrally formed with the upper bracket and the valve seat.

Images