CN212509605U - Eccentric half ball valve - Google Patents

Abstract

The utility model discloses an eccentric half ball valve, which comprises a valve body, a half ball valve core, a valve cover and a valve rod, the side surface of the valve body is provided with a flow inlet and a flow outlet, the hemispherical valve core is arranged in the valve body, the valve cover is fixedly connected with the valve body, the valve rod is rotatably connected with the top of the hemispherical valve core, the bottom of the hemispherical valve core is rotationally connected with a rotating shaft, the rotating shaft is rotationally connected with the bottom of the valve body, a valve seat is fixedly arranged on one side of the valve body close to the outflow port, the side wall of the valve seat is fixedly connected with a descaling brush shell, an electromagnet is fixed inside the descaling brush shell, a descaling brush is arranged in the descaling brush shell and is fixedly connected with a permanent magnet, the permanent magnet is arranged in the descaling brush shell, the valve rod is connected with the transmission structure, the valve cover is provided with a limiting structure, and the inner wall of the valve body is provided with a rubber layer. The beneficial effects of the utility model are that, effectual dirt with on the case is detached, and scale removal in-process valve need not to dismantle.

Description

Eccentric half ball valve

Technical Field

The utility model relates to the technical field of valves, especially an eccentric half ball valve.

Background

The ball valve mainly comprises a valve body, a valve core, a valve seat, a valve cover and other parts, and is widely applied to the fields of petroleum, chemical industry, energy, metallurgy and the like. In the prior art, when the eccentric half ball valve is used, scales are easy to form on a ball body, the sealing fit of the valve is changed when the scale layer is thin, the opening and closing torque of the valve is increased, the valve is abraded too fast, and the service life of the valve is shortened; when the scale layer is thick, the valve can not be opened even if the ball is adhered to the valve seat. The existing solution is to disassemble the valve and then perform the descaling operation, which results in a large workload.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems, and designs an eccentric half ball valve.

The technical scheme of the utility model is that, the eccentric half ball valve comprises a valve body, a half ball valve core, a valve cover and a valve rod, wherein the side surface of the valve body is provided with a flow inlet and a flow outlet, the half ball valve core is arranged in the valve body, the valve cover is fixedly connected with the valve body, the valve rod is rotatably connected with the top of the half ball valve core, the bottom of the half ball valve core is rotatably connected with a rotating shaft, the rotating shaft is rotatably connected with the bottom of the valve body, one side of the valve body close to the flow outlet is fixedly provided with a valve seat, the side wall of the valve seat is fixedly connected with a descaling brush shell, the inside of the descaling brush shell is fixedly provided with an electromagnet, a descaling brush is arranged in the descaling brush shell, the descaling brush is fixedly connected with a permanent magnet, the permanent magnet is arranged in the descaling brush shell, the, and a rubber layer is arranged on the inner wall of the valve body.

The limiting structure comprises a gland fixed on the valve cover, a movable rod is clamped on the gland and fixedly connected with a movable disc, the movable disc is integrally connected with a limiting block, a spring groove is formed in the valve rod, one end of a spring is fixed to the top of the spring groove, the other end of the spring is supported on the limiting block, and the limiting block is slidably connected with the spring groove.

When the hemispherical valve core rotates to one side of the outlet, the hemispherical valve core is pressed on the valve seat.

The valve rod overcoat is equipped with rotatory sleeve, the valve rod passes in proper order the activity dish the gland valve gap.

The transmission structure is a worm transmission structure.

The valve rod is connected with the hemispherical valve core through a flat key.

The transmission structure is fixedly connected with the rotary hand wheel.

The rubber layer is connected with the interior of the valve body in a wedge shape.

The movable rod is provided with 2 at least.

Utilize the technical scheme of the utility model an eccentric hemisphere valve of preparation, the beneficial effect who reaches:

(1) the stretching and retracting of the descaling brush are controlled by switching on and off the electromagnet, so that the dirt on the surface of the hemispherical valve core is removed when the descaling brush stretches out, the eccentric hemispherical valve does not need to be disassembled in the descaling process, and the normal work of the eccentric hemispherical valve is not influenced;

(2) the opening and closing of the eccentric half-ball valve are controlled by arranging the limiting structure, and after the hand wheel is rotated and screwed until the valve is closed, the movable rod, the movable disc, the spring and the limiting block are mutually matched for use, so that the valve is locked;

(3) the valve body is internally provided with the rubber layer which is connected with the valve body in a wedge shape, so that the rubber layer is not easy to shift and deform when the fluid is high in temperature and large in impact force, and the valve body has strong acid and alkali resistance and corrosion resistance, and is wear-resistant and anti-aging.

Drawings

Fig. 1 is a schematic structural view of an eccentric half ball valve according to the present invention;

FIG. 2 is a schematic view of the working state of the hemispherical valve core and the descaling brush of the eccentric hemispherical valve according to the present invention;

FIG. 3 is a schematic view of the overall structure of the descaling brush for eccentric half-ball valve according to the present invention;

fig. 4 is an enlarged view of a portion of the eccentric hemispherical valve shown in fig. 1 and marked with a symbol a according to the present invention;

in the figure, 1, a valve body; 2. a hemispherical valve core; 3. a valve cover; 4. a valve stem; 5. a flow inlet; 6. An outflow port; 7. a rotating shaft; 8. a valve seat; 9. descaling a brush shell; 10. an electromagnet; 11. a descaling brush; 12. a permanent magnet; 13. a transmission structure; 14. a limiting structure; 141. a gland; 142. a movable rod; 143. a movable tray; 144. a limiting block; 145. a spring slot; 146. a spring; 147. rotating the sleeve; 15. a rubber layer; 16. the hand wheel is rotated.

Detailed Description

It is next to combine the attached drawing to be right the utility model discloses it is specific to describe, as shown in fig. 1-4, an eccentric hemisphere valve, including valve body 1, hemisphere case 2, valve gap 3, valve rod 4, there are influent stream mouth 5 and outflow 6 valve body 1 side, hemisphere case 2 is installed 1 inside the valve body, valve gap 3 with 1 fixed connection of valve body, valve rod 4 with 2 tops of hemisphere case are rotated and are connected, 2 bottoms of hemisphere case are rotated with pivot 7 and are connected, pivot 7 with 1 bottom of valve body is rotated and is connected, valve body 1 is close to 6 one side fixed mounting of outflow has disk seat 8, transmission 13 and rotatory hand wheel 16 fixed connection. The initial state is a closed state, fluid can not pass through the eccentric half ball valve, and at the moment, the half ball valve core 2 is pressed on the valve seat 3. The opening process is as follows, and manual rotatory hand wheel 16 drives valve rod 4 through drive structure 13 and rotates, and valve rod 4 drives hemisphere case 2 and rotates around the axis of valve rod 4, and pivot 7 rotates simultaneously, and hemisphere case 2 leaves disk seat 3 until rotatory to 90, and the fluid flows into valve body 1 by inlet 5, flows out by outflowing port 6 again.

The descaling device is characterized in that a descaling brush shell 9 is fixedly connected to the side wall of the valve seat 8, an electromagnet 10 is fixed inside the descaling brush shell 9, a descaling brush 11 is arranged in the descaling brush shell 9, the descaling brush 11 is fixedly connected with a permanent magnet 12, the permanent magnet 12 is arranged in the descaling brush shell 9, the valve rod 4 is connected with a transmission structure 13, and a limit structure 14 is arranged on the valve cover 3. When the hemispherical valve core 2 is pressed on the valve seat 3, the electromagnet 10 is in a power-off state, the permanent magnet 12 and the electromagnet 10 are not attracted, the descaling brush 11 fixed with the permanent magnet 12 extends out of the descaling brush shell 9 to descale the surface of the hemispherical valve core 2, and the descaling brush 11 can cover most of the area of the hemispherical valve core 2, so that the descaling brush 11 can clean dirt on the hemispherical valve core 2 along with the rotation process of the hemispherical valve core 2 until the hemispherical valve core 2 rotates 90 degrees, the electromagnet 10 is electrified, the electromagnet 10 and the permanent magnet 12 are attracted, and the descaling brush 11 fixed on the permanent magnet 12 retracts into the descaling brush shell 9.

The limiting structure 14 comprises a gland 141 fixed on the valve cover 3, a movable rod 142 is clamped on the gland 141, the movable rod 142 is fixedly connected with a movable disc 143, the movable disc 143 is integrally connected with a limiting block 144, a spring groove 145 is formed in the valve rod 4, one end of a spring 146 is fixed at the top of the spring groove 145, the other end of the spring 146 is supported on the limiting block 144, and the limiting block 144 is slidably connected with the spring groove 145. This technical scheme has still designed limit structure 14, and rotatory hand wheel 16 is opened before the eccentric hemisphere valve, and limit structure 14 locks the eccentric hemisphere valve spacing, and operating personnel need upwards pull out movable disc 143 earlier just can operate rotatory hand wheel 16, and concrete process is as follows: the operator pulls up the movable disc 143, the stopper 144 moves upward and pushes the spring 146, and then the movable rod 142 fixedly connected with the movable disc 143 leaves the gland 141, and then the rotating hand wheel 16 is rotated to control the closing and opening of the eccentric half ball valve.

When the hemispherical valve core 2 rotates to one side of the outlet 6, the hemispherical valve core 2 presses on the valve seat 8.

A rotating sleeve 147 is sleeved outside the valve rod 4, and the valve rod 4 sequentially penetrates through the movable disc 143, the gland 141 and the valve cover 3. The rotating sleeve 147 is sleeved outside the valve rod 4 and rotates along with the rotation of the valve rod 4, so that the friction between the valve rod 4 and other parts is reduced. The valve rod 4 is rotatably connected with the valve cover 3 through a bearing. The valve cover 3 is fixed on the valve body 1 through bolts, and the gland 141 is fixedly connected with the valve cover 3 through bolts.

The transmission structure 13 is a worm transmission structure. The rotating hand wheel 16 is fixedly connected with the worm, the worm is meshed with the worm wheel, when the rotating hand wheel 16 rotates to drive the worm to rotate, the worm wheel meshed with the worm rotates along with the worm wheel, the worm wheel shaft is connected with the valve rod 4, and the valve rod 4 rotates along with the worm wheel shaft.

The valve rod 4 is connected with the hemispherical valve core 2 through a flat key.

The inner wall of the valve body 1 is provided with a rubber layer 15, and the rubber layer 15 is connected with the interior of the valve body 1 in a wedge shape. When the fluid temperature is high and the impact force is large, the rubber layer is not easy to shift and deform. The rubber layer 15 is made by mixing and refining fluororubber and polyvinylidene fluoride and then adding silicon dioxide powder, and has strong acid and alkali resistance and corrosion resistance, and is wear-resistant and ageing-resistant.

At least 2 movable rods 142 are arranged. The movable rods 142 are arranged circumferentially along the movable disk 141, and at least 2 are provided.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims (9)

1. An eccentric half ball valve is characterized by comprising a valve body (1), a hemispherical valve core (2), a valve cover (3) and a valve rod (4), wherein a flow inlet (5) and a flow outlet (6) are formed in the side surface of the valve body (1), the hemispherical valve core (2) is installed inside the valve body (1), the valve cover (3) is fixedly connected with the valve body (1), the valve rod (4) is rotatably connected with the top of the hemispherical valve core (2), the bottom of the hemispherical valve core (2) is rotatably connected with a rotating shaft (7), the rotating shaft (7) is rotatably connected with the bottom of the valve body (1), a valve seat (8) is fixedly installed on one side, close to the flow outlet (6), of the valve body (1), a descaling brush shell (9) is fixedly connected with the side wall of the valve seat (8), an electromagnet (10) is fixed inside the descaling brush shell (9), and a descaling brush (11) is arranged in the brush shell (9), the descaling brush (11) is fixedly connected with the permanent magnet (12), the permanent magnet (12) is arranged in the descaling brush shell (9), the valve rod (4) is connected with the transmission structure (13), the valve cover (3) is provided with a limiting structure (14), and the inner wall of the valve body (1) is provided with a rubber layer (15).

2. The eccentric half ball valve according to claim 1, wherein the limiting structure (14) comprises a gland (141) fixed on the valve cover (3), a movable rod (142) is clamped on the gland (141), the movable rod (142) is fixedly connected with a movable disc (143), the movable disc (143) is integrally connected with a limiting block (144), a spring groove (145) is formed in the valve rod (4), one end of the spring (146) is fixed at the top of the spring groove (145), the other end of the spring (146) abuts against the limiting block (144), and the limiting block (144) is slidably connected with the spring groove (145).

3. An eccentric half-ball valve according to claim 1, characterised in that the half-ball valve element (2) presses against the valve seat (8) when the half-ball valve element (2) is turned to the side of the outlet opening (6).

4. An eccentric half-ball valve according to claim 2, wherein a rotary sleeve (147) is sleeved on the valve rod (4), and the valve rod (4) sequentially passes through the movable disc (143), the gland (141) and the valve cover (3).

5. An eccentric half-ball valve according to claim 1, characterised in that the transmission (13) is a worm transmission.

6. An eccentric half-ball valve according to claim 1, characterised in that the valve stem (4) is connected to the half-ball valve core (2) by a flat key.

7. An eccentric half-ball valve according to claim 5, characterised in that the transmission structure (13) is fixedly connected with a rotating hand wheel (16).

8. An eccentric half-ball valve according to claim 1, characterised in that the rubber layer (15) is wedge-shaped with the inside of the valve body (1).

9. An eccentric half-ball valve according to claim 2, wherein there are at least 2 movable rods (142).

Images