CN222992343U - A buffer type electric regulating valve - Google Patents

Abstract

The utility model discloses a buffer type electric regulating valve, which relates to the technical field of valves and comprises a valve body, wherein the valve body is provided with an inlet channel and an outlet channel, a valve cover is arranged on the valve body, a valve seat, a valve core and a valve rod are arranged in the valve body, an adjusting sleeve is arranged between the valve core and the valve body, the valve core is connected with the valve rod, the upper end of the valve rod extends out of the valve cover to be connected with an electric actuating mechanism, the valve core moves up and down in the adjusting sleeve, a connecting pipe is arranged on the outer side of the inlet channel, a buffer part is arranged in the connecting pipe, a buffer flow channel is arranged in the middle of the buffer part, a plurality of stop blocks are arranged in the buffer flow channel, and the stop blocks are uniformly distributed up and down along the buffer flow channel. The utility model can effectively throttle and decompress the medium entering the valve body, avoid the occurrence of water hammer, protect various sensors in the valve body and ensure the normal operation of the valve.

Description

Buffer type electric regulating valve

Technical Field

The utility model relates to the technical field of valves, in particular to an electric regulating valve.

Background

Electrically operated control valves are important actuator meters in industrial automation process control. With the increasing degree of automation in the industrial fields, the method is increasingly applied to various industrial production fields. The existing electric regulating valve controls the downstream flow or pressure of the valve by arranging a plurality of regulating holes in array arrangement on a regulating sleeve and shielding the area of the regulating holes by a valve core, and controls the flow, the temperature, the pressure and other technological parameters of a pipeline medium by arranging a plurality of sensors in a valve body and driving the valve to change the cross-sectional area between the valve core and a valve seat by receiving signals of the sensors, thereby realizing an automatic regulating function. Because the valve body is internally provided with various sensors, when the regulating valve is closed, the sensors are easily influenced and even destroyed by the water hammer, so that the regulating valve is out of order, and the normal operation of the valve is influenced.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a buffer type electric regulating valve.

The technical scheme provided by the utility model is as follows:

The utility model provides a buffering formula electric control valve, includes the valve body, the valve body is equipped with inlet channel and outlet channel, be equipped with the valve gap on the valve body, be equipped with disk seat, case, valve rod in the valve body, be equipped with the spacer sleeve between case and the valve body, the valve rod is connected to the case, the valve gap links to each other with electric actuator is extended to the valve rod upper end, the case does the up-and-down motion in the spacer sleeve, the inlet channel outside is equipped with the connecting pipe, be equipped with the bolster in the connecting pipe, the bolster middle part is equipped with the buffering runner, be equipped with a plurality of dogs in the buffering runner, crisscross evenly distributed about the dog follows the buffering runner.

The connecting pipe tip is equipped with flange, the connecting pipe passes through the bolt and can dismantle with the valve body and be connected.

A sealing gasket is arranged between the connecting pipe and the valve body.

The longitudinal section of the stop block is triangular, the side surface of the stop block is a pressure-bearing guide inclined surface, and the pressure-bearing guide inclined surface and the central axis of the buffer flow channel form an included angle of 60 degrees.

The inner wall of the connecting pipe is provided with an internal thread, and the buffer part is detachably connected with the connecting pipe through the thread.

The inner wall of the adjusting sleeve is provided with a limiting inclined plane, and the outer surface of the valve core is provided with a limiting protrusion matched with the limiting inclined plane.

A support is arranged between the valve cover and the electric actuating mechanism, a travel scale is arranged on the support, and a travel pointer is arranged on the valve rod.

The valve cover is detachably connected with the valve body through bolts, and a sealing gasket is arranged between the valve cover and the valve body.

And a packing assembly is arranged between the valve cover and the valve rod and comprises packing, a packing pressing plate and a packing pressing cover, and the packing pressing cover is connected with the valve cover through bolts so as to press the packing pressing plate and further press the packing.

The utility model has the beneficial effects that the connecting pipe is arranged at the outer side of the inlet channel of the valve body, the buffer part is arranged in the connecting pipe, the buffer flow channel is arranged in the middle of the buffer part, the buffer flow channel is internally provided with the plurality of baffle blocks, the baffle blocks are uniformly distributed up and down along the buffer flow channel, and the medium can be effectively throttled and depressurized after being buffered by the buffer part, so that the occurrence of water hammer is avoided, various sensors in the valve body are protected, and the normal operation of the valve is ensured.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are further described below with reference to the accompanying drawings.

As shown in fig. 1, the buffer type electric regulating valve comprises a valve body 1, wherein the valve body 1 is provided with an inlet channel and an outlet channel, a valve cover 6 is arranged on the valve body 1, a valve seat 2, a valve core 3 and a valve rod 5 are arranged in the valve body 1, an adjusting sleeve 4 is arranged between the valve core 3 and the valve body 1, the valve core 3 is connected with the valve rod 5, the upper end of the valve rod 5 extends out of the valve cover 6 to be connected with an electric actuating mechanism 12, the valve core 3 moves up and down in the adjusting sleeve 4, the electric actuating mechanism 12 drives the valve rod 5 to rotate, and accordingly the valve core 4 is driven to move up and down in the adjusting sleeve 3 to shield the area of an adjusting hole on the adjusting sleeve 4 so as to control the downstream flow or pressure of the valve. The inner wall of the adjusting sleeve 4 is provided with a limiting inclined plane 21, and the outer surface of the valve core 3 is provided with a limiting bulge matched with the limiting inclined plane 21, so that the valve core 3 cannot excessively move downwards when moving up and down in the adjusting sleeve 4.

In this embodiment, the outside of the inlet channel of the valve body 1 is provided with a connecting pipe 22, a buffer part 25 is arranged in the connecting pipe 22, the inner wall of the connecting pipe 22 is provided with internal threads, the buffer part 25 is detachably connected with the connecting pipe 22 through threads, the end part of the connecting pipe 22 is provided with a connecting flange, the connecting pipe 22 is detachably connected with the valve body through a bolt 23, the disassembly and the assembly are convenient, a sealing gasket is arranged between the connecting pipe 22 and the valve body 1, and the medium is prevented from leaking from the matching part between the connecting pipe 22 and the valve body 1. The buffer member 25 middle part is equipped with buffer runner 24, be equipped with a plurality of dogs 26 in the buffer runner 24, the longitudinal section of dog 26 is triangle-shaped, the dog 26 side is pressure-bearing direction inclined plane 27, pressure-bearing direction inclined plane 27 is 60 contained angle with buffer runner 24 central axis, the crisscross evenly distributed about buffer runner 24 is followed to dog 26, when the medium passes buffer runner 24, pressure-bearing direction inclined plane 27 guide medium is in buffer runner 24 tortuous circulation, decompress step by step, make the medium effectively throttle, avoid the water hammer that the valve opened and close the in-process takes place, prevent the damage of sensor in the valve body because of the water hammer, ensure the normal operating of valve.

In this embodiment, a bracket 13 is disposed between the valve cover 6 and the electric actuator 12, a travel scale 11 is disposed on the bracket 13, and a travel pointer 10 is disposed on the valve rod 5, for indicating the movement travel of the valve rod to determine the opening of the valve, so as to realize accurate adjustment.

In this embodiment, valve gap 6 passes through the bolt with valve body 1 and can dismantle the connection, makes things convenient for the installation and the follow-up maintenance of valve, is equipped with sealing gasket between valve gap 6 and the valve body 1, avoids the medium to leak from the cooperation department between valve gap 2 and the valve body 1.

In this embodiment, be equipped with the packing subassembly between valve gap 6 and the valve rod 5, the packing subassembly includes packing 7, packing clamp plate 8, packing gland 9, thereby packing gland 9 links to each other through the bolt and valve gap 6 compresses tightly packing clamp plate 8, and then compresses tightly packing 7, prevents that the medium from leaking from the clearance between valve gap 6 and the valve rod 5, ensures sealed reliability.

The examples should not be construed as limiting the utility model, and any non-inventive modifications based on the spirit of the utility model should be regarded as being within the scope of the utility model.

Claims (9)

1. The buffer type electric regulating valve comprises a valve body, wherein the valve body is provided with an inlet channel and an outlet channel, a valve cover is arranged on the valve body, a valve seat, a valve core and a valve rod are arranged in the valve body, a regulating sleeve is arranged between the valve core and the valve body, the valve core is connected with the valve rod, the upper end of the valve rod extends out of the valve cover to be connected with an electric actuating mechanism, and the valve core moves up and down in the regulating sleeve.

2. The buffer type electric regulating valve of claim 1, wherein the connecting pipe is detachably connected with the valve body through bolts, and a connecting flange is arranged at the end part of the connecting pipe.

3. The buffer type electric regulating valve of claim 2, wherein a sealing gasket is arranged between the connecting pipe and the valve body.

4. The buffer type electric regulating valve of claim 1, wherein the side surface of the stop block is a pressure bearing guide inclined surface, and the pressure bearing guide inclined surface forms an included angle of 60 degrees with the central axis of the buffer flow channel.

5. The buffer type electric regulating valve of claim 1, wherein the inner wall of the connecting pipe is provided with internal threads, and the buffer piece is detachably connected with the connecting pipe through threads.

6. The electric regulating valve according to claim 1, wherein the regulating sleeve is provided with a limiting inclined surface on the inner wall, and a limiting protrusion matched with the limiting inclined surface is arranged on the outer surface of the valve core.

7. The electric control valve according to claim 1, wherein a bracket is arranged between the valve cover and the electric actuating mechanism, a travel scale is arranged on the bracket, and a travel pointer is arranged on the valve rod.

8. The electric regulating valve according to claim 1, wherein the valve cover is detachably connected with the valve body through bolts, and a sealing gasket is arranged between the valve cover and the valve body.

9. The electric regulating valve according to claim 1, wherein a packing assembly is arranged between the valve cover and the valve rod, the packing assembly comprises packing, a packing pressing plate and a packing pressing cover, and the packing pressing cover is connected with the valve cover through bolts so as to press the packing pressing plate and further press packing.