A hydraulic transmission bidirectional sealed flow regulating and pressure regulating valve

Abstract

The present invention proposes a hydraulic transmission bidirectional sealed flow regulating and pressure regulating valve which has a simple structure, has filtering and cleaning functions and can prevent the water hammer effect. The valve comprises a valve body, an inlet channel and an outlet channel opened on the valve body, and a connecting cylinder arranged in the inlet channel. A plurality of first channels for water flow to pass through are opened at the bottom of the connecting cylinder. A filter screen for filtering fluid impurities is arranged in the first channel. A water hammer protection device for preventing the water hammer effect in the water inlet channel and preventing the filter screen from being damaged by the water hammer effect is arranged in the connecting cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a hydraulic transmission bidirectional sealed flow and pressure regulating valve. Background Art

[0002] The valve is a control component in the fluid delivery system, which has the functions of shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief. The valve can be used to control the flow of various types of fluids such as water, various corrosive media, oil products, liquid metals and radioactive media. The valves used in fluid control systems, from the simplest shut-off valves to the various valves used in extremely complex automatic control systems, have a wide variety of varieties and specifications. The patent website discloses a hydraulic transmission bidirectional sealed flow regulating and pressure regulating valve, which can achieve the functions of bidirectional sealing and bidirectional regulation. However, due to the impurities in the fluid medium, the impurities will attach to the valve body and valve plate, corrode the valve body and valve plate, and affect the sealing and service life of the valve. Moreover, when the valve is used, a water hammer effect will occur, further affecting the service life of the valve. Summary of the invention

[0003] Therefore, in view of the above problems, the present invention proposes a hydraulic transmission bidirectional sealed flow regulating and pressure regulating valve which has a simple structure, has filtering and cleaning functions and can prevent the water hammer effect.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is to provide a hydraulic transmission bidirectional sealed flow and pressure regulating valve, including a valve body, an inlet channel and an outlet channel opened on the valve body, and a connecting cylinder arranged in the water inlet channel, a plurality of first channels for water flow to pass through are opened at the bottom of the connecting cylinder, a filter screen for filtering fluid impurities is arranged in the first channel, and a water hammer protection device is arranged in the connecting cylinder to prevent the water hammer effect in the water inlet channel and to avoid the filter screen from being damaged by the water hammer effect.

[0005] A further improvement is that the water hammer protection device includes a sliding plate for preventing water hammer from hitting the filter and damaging the filter, the sliding plate is matched with the first channel to open a second channel for water to flow through, and the second channel is connected to the first channel, the sliding plate is slidably arranged at the bottom of the connecting tube and can close the first channel when the sliding plate slides to both ends, the connecting tube is opened with a third channel for the sliding plate to slide into, and a sliding device is provided in the connecting tube for driving the sliding plate to slide so as to close and open the first channel and reduce the impact of water hammer on the sliding plate.

[0006] Further improvements are: the sliding device includes a spherical elastic strip located at the front end of the sliding plate for laterally bearing the impact of water hammer and being able to disperse the impact force generated by the water hammer to reduce damage to itself; a connecting ring is provided in the connecting tube, and the elastic blocks are provided at both ends of the connecting ring; a sliding rod is slidably penetrated through the bottom of the connecting tube, one end of the sliding rod is connected to the elastic block, and the other end of the sliding rod is slidably disposed in and penetrated through the bottom of the connecting tube; a pushing device is provided between the sliding rod and the sliding plate for pushing the plate to slide and being able to radially reduce the impact force of water hammer.

[0007] A further improvement is that the pushing device is: the sliding rod is provided with a first inclined surface with a cross-sectional diameter that gradually decreases from left to right, the sliding plate is provided with a second inclined surface that resists and cooperates with the first inclined surface so that the sliding rod can push the sliding plate to slide and close the first channel when sliding toward the bottom of the connecting tube, and the connecting tube is also provided with an elastic member for returning the sliding plate and further radially reducing the impact force of water hammer.

[0008] A further improvement is that the elastic member is a return spring, which is arranged in the third channel and has one end connected to the sliding plate and the other end connected to the inside of the third channel.

[0009] A further improvement is that a connecting ball is provided on the sliding rod, which can reduce the impact of water hammer on the sliding rod and better connect the sliding rod with the elastic block. One end of the connecting ball is fixedly connected to the sliding rod, and the other end of the connecting ball is connected to the elastic block.

[0010] A further improvement is that a limit block is fixedly provided at the other end of the sliding rod, and the limit block resists the bottom of the connecting tube.

[0011] A further improvement is that a connecting groove is provided on the inner wall of the water inlet channel, the connecting tube is locked on the inner wall of the water inlet channel by countersunk bolts and is located in the connecting groove, and a sealing device is provided at the water inlet of the water inlet channel.

[0012] A further improvement is that the sealing device comprises a sealing groove, a sealing ring is arranged in the sealing groove, and a sealing elastic member for tensioning the sealing ring is arranged between the sealing ring and the sealing groove.

[0013] A further improvement is that the sealing elastic member is a compression spring, one end of the compression spring is fixedly connected to the sealing ring, and the other end of the compression spring is fixedly connected to the inner wall of the sealing groove.

[0014] The advantages and beneficial effects of the present invention are:

[0015] The structure is simple and easy to use. The filter can filter impurities and increase the service life of the valve. The anti-water hammer protection device can protect the filter to prevent the filter from being damaged by the water hammer effect and increase the service life of the filter. The valve can filter impurities and effectively prevent the water hammer effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a partially cutaway structural schematic diagram of a hydraulic transmission bidirectional sealed flow and pressure regulating valve according to an embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of the enlarged structure of point A of embodiment of the present invention.

[0018] Figure 3 It is a schematic diagram of the enlarged structure of Example B of the present invention. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0020] like Figure 1-Figure 3 As shown, a hydraulic transmission bidirectional sealed flow regulating and pressure regulating valve comprises a valve body 1, a water inlet channel 2 and a water outlet channel opened on the valve body 1, and a connecting cylinder 3 arranged in the water inlet channel 2. The bottom of the connecting cylinder 3 is provided with a plurality of first channels 11 for water flow to pass through, the first channel 11 is provided with a filter screen 12 for filtering fluid impurities, and the connecting cylinder 3 is provided with an anti-water hammer protection device for preventing the water hammer effect in the water inlet channel 2 and preventing the filter screen 12 from being damaged by the water hammer effect.

[0021] Specifically, the water hammer protection device includes a sliding plate 10 for preventing water hammer from hitting the filter screen 12 and damaging the filter screen 12. The sliding plate 10 is matched with the first channel 11 to open a second channel 13 for water to flow through, and the second channel 13 is connected to the first channel 11. The sliding plate 10 is slidably arranged at the bottom of the connecting tube 3 and can close the first channel 11 when the sliding plate 10 slides to both ends. The connecting tube 3 is provided with a third channel 8 for the sliding plate 10 to slide into. A sliding device is provided in the connecting tube 3 for driving the sliding plate 10 to slide, thereby closing and opening the first channel 11 and reducing the impact of water hammer on the sliding plate 10.

[0022] Specifically, the sliding device includes a spherical elastic strip 4 located at the front end of the sliding plate 10 for laterally bearing the impact of water hammer and being able to disperse the impact force generated by water hammer to reduce its own damage. A connecting ring 7 is provided in the connecting tube 3, and the elastic strip 4 is arranged at both ends of the connecting ring 7. A sliding rod 5 is slidably penetrated at the bottom of the connecting tube 3, one end of the sliding rod 5 is connected to the elastic strip 4, and the other end of the sliding rod 5 is slidably arranged at the bottom of the connecting tube 3. The sliding rod 5 is provided with a first inclined surface 14 with a cross-sectional diameter gradually decreasing from left to right. The sliding plate 10 is provided with a second inclined surface 15 that resists and cooperates with the first inclined surface 14 so that the sliding rod 5 can push the sliding plate 10 to slide and close the first channel 11 when sliding to the bottom of the connecting tube 3. A reset spring 9 is also provided on the connecting tube 3 for returning the sliding plate 10 and further radially reducing the impact force of water hammer. The reset spring 9 is arranged in the third channel 8 and one end is connected to the sliding plate 10 and the other end is connected to the inside of the third channel 8.

[0023] In order to further reduce the water hammer effect, the sliding rod 5 is provided with a connecting ball 6 which can reduce the impact of water hammer on the sliding rod 5 and better connect the sliding rod 5 with the elastic strip 4. One end of the connecting ball 6 is fixedly connected to the sliding rod 5, and the other end of the connecting ball 6 is connected to the elastic strip 4.

[0024] In order to prevent the sliding rod 5 from excessively returning and directly penetrating into the connecting tube 3 , a limit block 16 is fixedly disposed at the other end of the sliding rod 5 , and the limit block 16 resists the bottom of the connecting tube 3 .

[0025] In order to clean the filter screen 12 and maintain the components in the filter cartridge and to improve the sealing performance of the connection between the valve and the external pipeline, a connecting groove 31 is provided on the inner wall of the water inlet channel 2, and the connecting cylinder 3 is locked on the inner wall of the water inlet channel 2 by a countersunk bolt and is located in the connecting groove 31. A sealing groove is provided at the water inlet of the water inlet channel 2, and a sealing ring 17 is provided in the sealing groove. A compression spring 18 for tensioning the sealing ring 17 is provided between the sealing ring 17 and the sealing groove, one end of the compression spring 18 is fixedly connected to the sealing ring 17, and the other end of the compression spring 18 is fixedly connected to the inner wall of the sealing groove. When the valve is connected to the external pipeline, the compression spring 18 is compressed to generate elastic force to tightly resist the sealing ring 17 between the valve and the external pipeline.

[0026] Working principle:

[0027] Install the connecting tube 3 into the water inlet channel 2 of the valve. When the water flows through the water inlet channel 2, it flows into the connecting tube 3, then flows through the second channel 13 of the sliding plate 10, and is filtered through the filter screen 12 in the first channel 11 to remove impurities, thereby preventing impurities from being attached to the inside of the valve body and the valve plate, and improving the service life of the valve. When the pipeline is opened and closed, the water flow generates water hammer and enters the connecting tube 3. The water flow hits the elastic strip 4, and the elastic strip 4 is deformed laterally to reduce the impact of the water flow, and then pushes the sliding rod 5 to slide. When the sliding rod 5 slides, it pushes the sliding plate 10 to slide. When the sliding plate 10 slides, the reset spring 9 is compressed, thereby radially reducing the impact force of the water flow and reducing the effect of the water hammer, thereby protecting the sliding plate 10 and making it less likely to be damaged. At the same time, the sliding plate 10 slides to close the first channel 11 to prevent the water flow from impacting the filter screen 12, thereby protecting the filter screen 12 and improving the service life of the filter screen 12.

[0028] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A hydraulically driven bidirectional sealed flow regulating and pressure regulating valve, comprising a valve body, a water inlet channel and a water outlet channel provided on the valve body, characterized in that: It also includes a connecting cylinder arranged in the water inlet channel, wherein a plurality of first channels for water flow to pass through are opened at the bottom of the connecting cylinder, a filter screen for filtering fluid impurities is arranged in the first channel, a water hammer protection device for preventing water hammer effect in the water inlet channel and preventing the filter screen from being damaged by the water hammer effect is arranged in the connecting cylinder, the water hammer protection device includes a sliding plate for preventing water hammer from hitting the filter screen and damaging the filter screen, a second channel for water flow to pass through is opened on the sliding plate to match the first channel, and the second channel is connected to the first channel, the sliding plate is slidably arranged at the bottom of the connecting cylinder, and the first channel can be sealed when the sliding plate slides to both ends, and the connecting cylinder is opened A third channel for the sliding plate to slide into, a sliding device is provided in the connecting tube for driving the sliding plate to slide so as to close and open the first channel and reduce the impact of water hammer on the sliding plate, the sliding device includes a spherical elastic strip located at the front end of the sliding plate for laterally bearing the impact of water hammer and being able to disperse the impact force generated by water hammer to reduce damage to itself, a connecting ring is provided in the connecting tube, the elastic strip is provided at both ends of the connecting ring, a sliding rod is slidably penetrated at the bottom of the connecting tube, one end of the sliding rod is connected to the elastic strip, and the other end of the sliding rod is slidably disposed in and penetrated at the bottom of the connecting tube, a pushing device is provided between the sliding rod and the sliding plate for pushing the plate to slide and radially reducing the impact force of water hammer.

2. A hydraulic transmission bidirectional sealed flow regulating and pressure regulating valve according to claim 1, characterized in that: The pushing device is as follows: the sliding rod is provided with a first inclined surface whose cross-sectional diameter gradually decreases from left to right; the sliding plate is provided with a second inclined surface which resists and cooperates with the first inclined surface so that when the sliding rod slides toward the bottom of the connecting tube, it can push the sliding plate to slide and close the first channel; the connecting tube is also provided with an elastic member for returning the sliding plate and further radially reducing the impact force of water hammer.

3. A hydraulic transmission bidirectional sealed flow regulating and pressure regulating valve according to claim 2, characterized in that: The elastic member is a return spring, which is arranged in the third channel and has one end connected to the sliding plate and the other end connected to the inside of the third channel.

4. A hydraulic transmission bidirectional sealed flow regulating and pressure regulating valve according to claim 1, characterized in that: The sliding rod is provided with a connecting ball which can reduce the impact of water hammer on the sliding rod and make the sliding rod and the elastic strip better connected. One end of the connecting ball is fixedly connected to the sliding rod, and the other end of the connecting ball is connected to the elastic strip.

5. The hydraulic transmission bidirectional sealed flow regulating and pressure regulating valve according to claim 1, characterized in that: A limit block is fixedly provided at the other end of the sliding rod, and the limit block resists the bottom of the connecting tube.

6. A hydraulic transmission bidirectional sealed flow regulating and pressure regulating valve according to claim 1, characterized in that: The inner wall of the water inlet channel is provided with a connecting groove, the connecting tube is locked on the inner wall of the water inlet channel by countersunk bolts and is located in the connecting groove, and the water inlet of the water inlet channel is provided with a sealing device.

7. A hydraulic transmission bidirectional sealed flow regulating and pressure regulating valve according to claim 6, characterized in that: The sealing device comprises a sealing groove, a sealing ring is arranged in the sealing groove, and a sealing elastic member for tensioning the sealing ring is arranged between the sealing ring and the sealing groove.

8. A hydraulic transmission bidirectional sealed flow regulating and pressure regulating valve according to claim 7, characterized in that: The sealing elastic member is a compression spring, one end of which is fixedly connected to the sealing ring, and the other end of which is fixedly connected to the inner wall of the sealing groove.

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