CN205534287U - Novel stop valve - Google Patents

Abstract

The utility model discloses a novel stop valve has the valve body, be equipped with water inlet and delivery port around the valve body, still include valve clack, valve rod, be in the screw rod pivot on valve rod top, the valve rod appearance sets up as rectangular size and vertical the setting in the middle part of valve body valve rod upper portion is equipped with one section and hollow and take the internal screw thread cavity, the screw rod pivot arrange in the cavity and with cavity screw -thread fit the top of valve body is equipped with a vertical support side pipe that passes its roof, and rectangular size cavity structure of its inside one -tenth just coordinates with stem seal, the lower extreme and the valve clack fixed connection of valve rod, the upper end of screw rod pivot is passed vertical support side pipe and is equipped with a turning handle on its top. This kind of novel stop valve not only effectively realizes opening and closing of valve, but also enables turning handle and do not go up and down along with the lift of valve clack with the branch under and, effectively practices thrift the space on valve body upper portion, and suitable place is wider.

Description

New globe valve

Technical field:

The utility model relates to a novel cut-off valve.

Background technique:

Valves are the control components in the fluid delivery system. They have the functions of cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves used in fluid control systems range from the simplest cut-off valve to extremely complex There are various types and specifications of valves used in the automatic control system. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves, chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, duplex steel valves, plastic valves, non-standard custom-made valve materials, and globe valves are also called gate valves. , is a forced sealing valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface not to leak. When the medium enters the valve from the bottom of the disc, the resistance that the operating force needs to overcome is the friction between the valve stem and packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the valve stem The diameter of the valve must be large, otherwise the failure of the valve stem to bend will occur. Although there are many types of globe valves at present, the valve stems on most globe valves rise and fall as the valve plate rises and falls, and the structure is complicated. Therefore, this kind of valve is not suitable for use in small spaces, and its use is limited. limit.

Utility model content:

The technical problem to be solved by the utility model is to provide a new cut-off valve which is simple in structure, easy to manufacture and install, and will not be restricted in use in small spaces.

In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

A new type of shut-off valve has a valve body, the valve body is provided with a water inlet and a water outlet at the front and back, the shut-off valve also includes a valve disc, a valve stem, and a screw shaft at the top of the valve stem, and the shape of the valve stem is set as Cuboid and vertically arranged in the middle of the valve body, a hollow cavity with internal thread is provided on the upper part of the valve stem. The screw shaft is placed in the cavity and is threaded with the cavity. The top of the valve body is provided with a vertical support square tube passing through its top wall, the inside of which has a cuboid cavity structure and is tightly matched with the valve stem. The lower end of the valve stem is fixedly connected with the valve disc, and the screw shaft The upper end passes through the vertical support square tube and is provided with a rotating handle at its top.

Preferably, a connection bearing is provided between the upper end of the screw shaft and the vertical support square tube, and the non-threaded rod body of the screw shaft is fixedly connected with the connection bearing.

Preferably, a sealing protection cover set on the screw shaft is provided between the screw shaft and the vertical support square tube.

Preferably, a waterproof sealing ring is provided between the lower end of the vertical support square tube and the valve stem.

Compared with the prior art, the utility model is beneficial in that: this new cut-off valve adopts a structure combining a hollow valve stem and a threaded lifting rod, which not only effectively realizes the opening and closing of the valve, but also enables the turning handle and other The lower support rod does not rise and fall with the lifting of the valve clack, which effectively saves the space on the upper part of the valve body, and is applicable to a wider range of places. The overall structure is simple, easy to install, economical and practical, and is suitable for popularization and application.

Description of drawings:

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is the structural representation of the utility model

In the figure: 1, valve body 2, water inlet 3, water outlet 4, valve disc 5, valve rod 6, screw shaft 7, cavity 8, vertical support square tube 9, rotating handle 10, connecting bearing, 11, seal Protective cover 12, waterproof sealing ring

detailed description:

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in detail:

A new type of stop valve shown in Figure 1 has a valve body 1, and the valve body 1 is provided with a water inlet 2 and a water outlet 3 at the front and rear. The screw shaft 6, the shape of the valve rod 5 is set as a cuboid and vertically arranged in the middle of the valve body 1, a section of hollow cavity 7 with internal thread is provided on the upper part of the valve rod 5, the screw rod The rotating shaft 6 is placed in the cavity 7 and is screwed with the cavity 7. A vertical support square tube 8 passing through the top wall of the valve body 1 is provided on the top of the valve body 1. It has a rectangular cuboid cavity structure inside and The valve stem 5 is sealingly matched, the lower end of the valve stem 5 is fixedly connected with the valve flap 4, the upper end of the screw shaft 6 passes through the vertical support square tube 8 and a rotating handle 9 is provided at its top. In order to facilitate the screw shaft 6 to effectively and stably rotate internally in the cavity 7 of the valve rod 5 , a connecting bearing 10 is provided between the upper end of the screw shaft 6 and the vertical support square tube 8 . The non-threaded rod body of the screw shaft 6 is fixedly connected with the connecting bearing 10 . Therefore, in practical applications, when the valve needs to be opened, the handle 9 is turned forward, and then the screw shaft 6 is driven to rotate on the connecting bearing 10, and because the threaded rod at the lower end of the screw shaft 6 and the cavity 7 on the valve stem 5 Threaded connection and cooperation, and because the valve stem 5 is rectangular in shape and can be tightly matched with the square cavity structure in the vertical support square tube 8, when the screw shaft 6 rotates forward, the valve stem 5 at the lower part is driven upward. Slow movement and the valve stem 5 will not rotate relative to the vertical support square tube 8, and then drive the valve clack 4 connected to it to run upwards, and then open the valve. The operation mode is just opposite to the above, and then the purpose of closing the valve is achieved. During the whole running operation, the rotating handle 9 and the screw shaft 6 below it will not move up or down, thus effectively saving the space resources on the upper part thereof.

In addition, in order that the cut-off valve can be suitable for outdoor applications, a set of sealing protection cover 11 on the screw shaft 6 is provided between the screw shaft 6 and the vertical support square tube 8 . And in order to enhance the tightness of the overall structure and prevent water leakage, a waterproof sealing ring 12 is provided between the lower end of the vertical support square pipe 8 and the valve stem 5 .

The above-mentioned new globe valve adopts the structure of the combination of hollow valve stem and threaded lifting rod, which not only effectively realizes the opening and closing of the valve, but also makes the rotating handle and the support rod below it not rise and fall with the lifting of the valve disc, effectively saving the valve body. The space on the upper part is suitable for a wider range of places, and the overall structure is simple, easy to install, economical and practical.

It should be emphasized that: the above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any simple modification, equivalent change and Modifications still belong to the scope of the technical solution of the utility model.

Claims (4)

1. A new type of shut-off valve, which has a valve body (1), and the valve body (1) is provided with a water inlet (2) and a water outlet (3) at the front and rear, and is characterized in that: the shut-off valve also includes a valve disc ( 4), the valve stem (5), and the screw shaft (6) at the top of the valve stem (5). The upper part of the valve stem (5) is provided with a hollow cavity (7) with internal threads, and the screw shaft (6) is placed in the cavity (7) and threaded with the cavity (7). The top of the valve body (1) is provided with a vertical support square tube (8) passing through its top wall, the inside of which is designed as a cuboid cavity structure and is sealed with the valve stem (5), and the valve stem (5) ) is fixedly connected with the valve disc (4), the upper end of the screw shaft (6) passes through the vertical support square tube (8) and is provided with a rotating handle (9) at the top. 2. The new cut-off valve according to claim 1, characterized in that: a connecting bearing (10) is provided between the upper end of the screw shaft (6) and the vertical support square tube (8), and the screw shaft ( 6) is fixedly connected between the non-threaded rod body and the connecting bearing (10). 3. The new shut-off valve according to claim 2, characterized in that: a set of sealing protection cover ( 11). 4. The new stop valve according to claim 1, characterized in that: a waterproof sealing ring (12) is provided between the lower end of the vertical support square pipe (8) and the valve stem (5).