CN116972183A - High stability control valve - Google Patents

Abstract

The invention discloses a high-stability control valve, which includes: a valve body, which is configured to have a cavity structure with an inlet and an outlet; a valve stem, which is inserted into the cavity; and a valve cover, which is used to close the cavity; The frame body is provided with an installation platform; the cylinder drives the valve stem to move; the pilot valve disc and pilot valve core are located in the cavity; the valve cover is provided with a guide hole corresponding to the valve stem, and the frame body is fixed on the valve cover ; The present invention can avoid valve leakage and improve the stability of the valve.

Description

High stability control valve

Technical field

The invention belongs to the technical field of control valves, and in particular relates to a high-stability control valve.

Background technique

The control valve device is used to control the flow of fluid, and the fluid can flow in and out through multiple valve ports. When the control valve is opened, the force acting on the valve core is unbalanced, which increases the force required to open the valve core, easily causing valve leakage and affecting the stability of the valve.

Contents of the invention

This Summary is provided to introduce in simplified form concepts that are later described in detail in the Detailed Description. The content of this application is not intended to identify key features or essential features of the claimed technical solution, nor is it intended to be used to limit the scope of the claimed technical solution.

In order to overcome the shortcomings of the prior art, the present invention provides a high-stability control valve.

In order to achieve the above object, the present invention adopts the following technical solution: a high-stability control valve, including: a valve body, which is configured to have a cavity structure with an inlet and an outlet; a valve stem, which passes through the cavity; The cover is used to close the cavity; the frame is provided with a mounting platform; the cylinder drives the valve stem to move; the pilot valve disc and pilot valve core are located in the cavity; the valve cover is provided with a guide hole corresponding to the valve stem , the frame is fixed on the valve cover.

Further, the high stability control valve also includes: a first installation ring, located on the valve cover; a second installation ring, located on the first installation ring; a plurality of scraping blocks, located on the second installation block; a material receiving box. , located on the first mounting ring; the material receiving box has an annular structure, and the inner diameter of the material receiving box corresponds to the diameter of the valve stem.

Further, the scraper block includes a first scraper block and a second scraper block. The second mounting ring is provided with a first movable groove for the first scraper block to move and a second movable groove for the second scraper block to move. The first movable groove is for the second scraper block to move. The slot and the second movable slot are staggered.

Further, the high-stability control valve also includes: a first push plate to push the scraper to move; a movable rod to push the first push plate to move; and the second mounting ring is provided with a first movable groove and a second movable groove. The first cavity has a first push plate located in the first cavity.

Further, the high stability control valve also includes: a first connecting rod, located at the bottom of the first push plate; a second push plate, located at the bottom of the first connecting rod; a third push plate, located at the bottom of the movable rod; a valve stem. When moving, the first scraping block and the second scraping block respectively extend from the first movable groove and the second movable groove.

Further, the high-stability control valve also includes: a second connecting rod for connecting the first installation ring and the second installation ring; a transmission wheel for transmission cooperation with the first connecting rod; a swivel ring for transmission cooperation with the transmission wheel; A connecting ring is provided on the second connecting rod; the first connecting rod is rotationally connected to the bottom of the first push plate, and the rotating ring is rotationally connected to the first connecting ring.

Further, the high stability control valve also includes: a first movable block, located at the bottom of the frame; a first connecting plate, located at the top of the movable rod; a first connecting block, used to connect the first movable block and the first connecting plate ; The first connecting spring is located on the first movable block; when the cylinder drives the valve stem to move, the first connecting spring pulls the first movable block to move upward.

Further, the high-stability control valve also includes: a transmission rod, one end of which is provided above the first movable block; a first bump, which is provided on the piston rod of the cylinder; and the first bump is pushed when the piston rod of the cylinder moves upward. The drive rod turns.

Further, the high stability control valve also includes: a second movable block, located on the second installation ring; a scraper ring, connected to the second movable block; a fourth push plate, located on the movable rod; the diameter of the scraper ring is the same as that of the second movable block. The inner diameters of the two mounting rings correspond to each other; when the fourth push plate moves downward with the movable rod, the fourth push plate pushes the second movable block to move downward.

Further, the high stability control valve also includes: a second connecting ring connected to the second movable block; a third connecting rod located on the scraper ring; a second connecting spring located on the third connecting rod; a plurality of second connecting rods. The bump is provided on the inner wall of the second mounting ring; the bottom of the second connecting ring is provided with a connecting groove corresponding to the third connecting rod.

The invention is beneficial in that it provides a high-stability control valve that avoids valve leakage and improves the stability of the valve.

Description of the drawings

The accompanying drawings, which constitute a part of this application, are included to provide a further understanding of the application so that other features, objects and advantages of the application will become apparent. The drawings and descriptions of the schematic embodiments of the present application are used to explain the present application and do not constitute an improper limitation of the present application.

Additionally, the same or similar reference numbers refer to the same or similar elements throughout the drawings. It should be understood that the drawings are schematic and that elements and elements are not necessarily drawn to scale.

In the attached picture:

Figure 1 is a schematic structural diagram of a high stability control valve in an embodiment of the present invention.

FIG. 2 is a schematic diagram of the cooperation between the valve cover and the frame of the high-stability control valve in the embodiment shown in FIG. 1 .

FIG. 3 is a cross-sectional view of the valve cover and frame of the high stability control valve in the embodiment shown in FIG. 1 .

Figure 4 is an enlarged view of point A in Figure 3.

Figure 5 is an enlarged view of point B in Figure 3.

FIG. 6 is a cross-sectional view of the second connecting rod of the high stability control valve in the embodiment shown in FIG. 1 .

Figure 7 is an enlarged view of point C in Figure 6.

FIG. 8 is a cross-sectional view of the rotating ring of the high stability control valve in the embodiment shown in FIG. 1 .

Figure 9 is an enlarged view of D in Figure 8.

FIG. 10 is a cross-sectional view of the second movable block of the high stability control valve in the embodiment shown in FIG. 1 .

Figure 11 is an enlarged view of E in Figure 10 .

FIG. 12 is a cross-sectional view of the mounting block of the high stability control valve in the embodiment shown in FIG. 1 .

Figure 13 is an enlarged view of F in Figure 12 .

The meanings of the reference marks in the figure are as follows:

101. Valve body; 102. Sleeve; 103. Pilot valve core; 104. Pilot disc; 105. Valve stem; 106. Valve cover; 107. Packing; 108. Frame; 109. Cylinder; 1091. First projection block; 110, first mounting ring; 111, screws; 112, material receiving box; 113, movable rod; 1131, first connecting plate; 1132, third push plate; 114, second connecting plate; 1141, first reset Spring; 115, second mounting ring; 116, first scraper block; 117, second scraper block; 118, first push plate; 1181, second return spring; 119, mounting block; 120, second movable block; 1201 , support spring; 1202, fifth connecting rod; 121, flip plate; 122, support plate; 123, insertion rod; 124, second connecting rod; 125, scraper ring; 1251, third connecting rod; 126, sixth connection Rod; 127, push rod; 128, first movable block; 1281, first connecting spring; 129, first connecting block; 130, transmission rod; 131, fourth connecting rod; 1311, limiting plate; 132, second Connecting rod; 133, first connecting rod; 1331, second push plate; 134, second connecting ring; 135, swivel ring; 136, transmission wheel; 137, transmission roller.

Detailed ways

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the disclosure are shown in the drawings, it should be understood that the disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of the present disclosure.

It should also be noted that, for convenience of description, only the parts related to the invention are shown in the drawings. The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.

It should be noted that concepts such as “first” and “second” mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units. Or interdependence.

It should be noted that the modifications of "one" and "plurality" mentioned in this disclosure are illustrative and not restrictive. Those skilled in the art will understand that unless the context clearly indicates otherwise, it should be understood as "one or Multiple”.

The names of messages or information exchanged between multiple devices in the embodiments of the present disclosure are for illustrative purposes only and are not used to limit the scope of these messages or information.

The present disclosure will be described in detail below in conjunction with embodiments with reference to the accompanying drawings.

As shown in Figure 1-13, a high stability control valve includes a valve body 101, a sleeve 102, a pilot valve core 103, a pilot valve disc 104, a valve stem 105, a valve cover 106, a packing 107, a frame 108 and Cylinder 109.

The valve body 101 is configured to have a cavity structure with one inlet and one outlet; the sleeve 102 is used to fix the valve core; the valve stem 105 is penetrated in the cavity; the valve cover 106 is used to close the cavity; the frame 108 is provided with An installation platform; the cylinder 109 is located on the frame 108 for driving the valve stem 105 to move; the pilot valve core 103 and the pilot valve disc 104 are located in the cavity; the valve cover 106 is provided with a guide hole corresponding to the valve stem 105. The frame 108 is fixed on the valve cover 106, and the packing 107 is filled in the guide hole to fill the gap between the valve stem 105 and the guide hole. The packing 107 is graphite packing.

During the valve opening process, the pilot valve disc 104 is opened first. The capacity of the pilot valve core 103 is larger than the capacity of the annular gap section. Due to the pressure relief effect of the pilot valve disc 104, the unbalanced force acting on the pilot valve core 103 is reduced. Small, greatly reducing the force required to open the pilot valve core 103. As the pilot valve core 103 closes, the pressure in front of the valve passes through the balancing hole and is introduced above the valve core. The valve adopts a flow-close type valve core (high inlet, low outlet). Sealing of the valve seat; finally, the cylinder 109 compresses the valve core spring and closes the pilot valve disc 104, and the sealing performance reaches level V.

The valve cover 106 is provided with an installation groove, and a first installation ring 110 is provided in the installation groove. The first installation ring 110 is provided with a second connecting rod 132124, and the second connecting rod 132124 is provided with a second installation ring 115. The first The side wall of the mounting ring 110 is provided with a second connecting block, and the second connecting block is fixed in the mounting groove through screws 111; the inner wall of the second mounting ring 115 is provided with a plurality of first movable grooves and second movable grooves. The groove and the second movable groove are staggered. The first scraper 116 is provided in the first movable groove, and the second scraper 117 is provided in the second movable groove. The first scraper 116 is connected to the first scraper through a third connecting spring. In the movable groove, the second scraper 117 is connected to the second movable groove through a fourth connecting spring. The second mounting ring 115 is also provided with a first cavity. The first movable groove and the second movable groove are connected with the first cavity. The cavities are connected, a first push plate 118 is provided in the first cavity, a second return spring 1181 is provided on the first push plate 118, a plurality of first through cavities are provided at the bottom of the first cavity, and the first through cavities pass through On the second connecting rod 132124, a first connecting rod 133 is rotatably connected to the bottom of the first push plate 118. The first connecting rod 133 passes through the bottom of the first through cavity. A second push plate 1331 is provided at the bottom of the first connecting rod 133. , the bottom of the installation groove is provided with a first groove, and the valve cover 106 is provided with a first movable cavity communicated with the first groove.

The first movable cavity is provided with a movable rod 113. The bottom end of the movable rod 113 is provided with a third push plate 1132. The third push plate 1132 is provided with a second connecting plate 114. The second connecting plate 114 is used for two adjacent ones. A third push plate 1132 is provided with a first return spring 1141 on the second connecting plate 114; a third movable groove is provided on the bottom surface of the installation platform of the frame 108, and a first movable block 128 is provided in the third movable groove. The movable block 128 is connected to the third movable groove through a first connecting spring 1281; the top of the movable rod 113 is provided with a first connecting plate 1131, and the first connecting plate 1131 and the first movable block 128 are connected through a first connecting block 129. The first connecting block 129 has an I-shaped structure; a through hole is provided on the installation platform, and the piston rod of the cylinder 109 is passed through the through hole; a first transmission chamber is provided on the side wall of the third movable groove. A transmission rod 130 is provided, and the middle part of the transmission rod 130 is rotatably connected in the first transmission cavity. One end of the transmission rod 130 is above the first movable block 128, and the other end is inserted into the through hole; the piston rod of the cylinder 109 is provided with a first The first bump 1091 is provided below one end of the transmission rod 130 .

The piston rod of the cylinder 109 is provided with a fourth connecting rod 131. The top of the valve rod 105 is provided with a second cavity. The fourth connecting rod 131 is inserted into the second cavity. The bottom end of the fourth connecting rod 131 is provided with a limit plate. 1311.

The second connecting rod 132124 is provided with a first connecting ring, and a swivel ring 135 is rotatably connected to the first connecting ring. The second connecting rod 132124 is provided with a transmission groove communicating with the first through cavity, and a transmission swivel ring is provided in the transmission groove. 135 and the transmission wheel 136 of the first connecting rod 133.

After the first installation ring 110 is installed into the installation groove, the second push plate 1331 is inserted into the first groove, the swivel ring 135 is rotated, the transmission wheel 136 drives the first connecting rod 133 to rotate, and the first connecting rod 133 drives the second connecting rod 133 to rotate. The push plate 1331 rotates into the first movable chamber. At this time, the third push plate 1132 is below the second push plate 1331; when the cylinder 109 pushes the valve rod 105 to move, the cylinder 109 first drives the piston rod to move, and the limit plate 1311 is in the third movable chamber. The second cavity moves to the bottom of the second cavity, and the bump moves to the bottom of the through hole with the piston rod of the cylinder 109. The first connecting spring 1281 pulls the first movable block 128 to move into the third movable groove, and the first movable block 128 drives The movement moves upward, the third push plate 1132 pushes the second push plate 1331 to move, the second push plate 1331 drives the first push plate 118 to move, and the first push plate 118 pushes the airflow in the first cavity into the first In the movable groove and the second movable groove, the first scraping block 116 and the second scraping block 117 protrude from the first movable groove and the second movable groove, and the first scraping block 116 and the second scraping block 117 are in contact with the valve stem 105 side. When the valve stem 105 moves, it contacts the first scraper 116 and the second scraper 117 to oppose the valve stem 105 . Clean the side wall to prevent impurities adhering to the side wall of the valve stem 105 from affecting the movement of the valve stem 105; when the cylinder 109 drives the valve stem 105 to move upward, the limit plate 1311 moves to the top of the second cavity and then presses against the second cavity. The top surface drives the valve stem 105 to move, and the first bump 1091 moves into the through hole and then touches the bottom of one end of the transmission rod 130. The first bump 1091 pushes one end of the transmission rod 130 to move, and the transmission rod 130 rotates around the connection point to push the first The movable block 128 moves downward. The first movable block 128 drives the movable rod 113 to descend together. The fourth push plate descends to the bottom of the first movable chamber. The second return spring 1181 pushes the first push plate 118 to move downward. The first movable groove And the airflow in the second movable groove flows back into the first cavity, and the third connecting spring and the fourth connecting spring pull the first scraper 116 and the second scraper 117 into the first movable groove and the second movable groove, The first scraper 116 and the second scraper 117 are respectively in contact with the side walls of the first movable groove and the second movable groove, and the adherends on the first scraper 116 and the second scraper 117 are scraped off; The staggered arrangement of the first movable groove and the second movable groove allows the first scraper 116 and the second scraper 117 to form a complete circle, thereby cleaning the entire side wall of the valve stem 105 and improving the cleaning effect of the valve stem 105 .

The second mounting ring 115 is provided with a mounting block 119. The mounting block 119 is provided with a fourth movable groove. The fourth movable groove is provided with a second movable block 120. The second movable block 120 is provided with a slider. The inner wall of the slot is provided with a chute corresponding to the slide block. The bottom of the second movable block 120 is provided with a support spring 1201. The second movable block 120 is provided with a fifth connecting rod 1202. The bottom of the fifth connecting rod 1202 is provided with a second The bottom of the connecting ring 134 and the second connecting ring 134 is provided with a scraper ring 125. Specifically, the scraper ring 125 is provided with a third connecting rod 1251, and the bottom of the second connecting ring 134 is provided with a connecting groove corresponding to the third connecting rod 1251. , the third connecting rod 1251 is connected to the connecting groove through a second connecting spring; a plurality of second bumps are provided on the inner wall of the second mounting ring 115; a through groove is provided on the second movable block 120, and the through groove is rotatably connected. There is a flip plate 121, and a fifth movable groove is provided on the inner wall of the through groove. A support plate 122 is provided in the fifth movable groove. The support plate 122 is connected to the fifth movable groove through a fifth connecting spring. The top of the fifth movable groove is provided with a turning plate 121. There is a second transmission cavity, and a transmission roller 137 matching the support plate 122 is provided in the second transmission cavity. A second through cavity is provided at the bottom of one end of the second transmission cavity, and the second through cavity is located on one side of the fifth movable groove. The bottom of the fourth movable groove is provided with an insertion rod 123 corresponding to the second through cavity, and the insertion rod 123 has transmission teeth corresponding to the transmission roller 137; the movable rod 113 is provided with a sixth connecting rod 126, and the sixth connecting rod 126 There is a push rod 127 on it.

When the movable rod 113 moves downward, the third push plate 1132 moves to the bottom of the first movable chamber, the first scraper 116 and the second scraper 117 enter the first movable groove and the second movable groove, and the push rod 127 abuts against the first movable groove. On the flip plate 121, the support plate 122 extends from the fifth movable groove and presses against the bottom surface of the flip plate 121. The push plate pushes the second movable block 120 to move downward, and the scraper ring 125 moves downward together with the second movable block 120. The ring 125 contacts the inner wall of the second mounting ring 115 to clean the side walls of the first movable groove and the second movable groove. When the second movable block 120 moves to the bottom of the fourth movable groove, the insertion rod 123 is inserted into the second through cavity. The inner transmission roller 137 contacts, and the rotation of the transmission roller 137 drives the support plate 122 to move. After the support plate 122 enters the fifth movable groove, the push rod 127 directly pushes the flip plate 121 to rotate and passes through the side of the flip plate 121, and the support spring 1201 pushes The second movable block 120 moves upward, and the scraper ring 125 moves together with the second movable block 120. When the scraper ring 125 moves, it presses against the second bump, and the second bump blocks the movement of the hanging ring. The second connecting ring 134 moves relative to the scraper ring 125. When the elastic force generated by the stretching of the second connecting spring is greater than the resistance of the scraper ring 125, the second connecting spring pulls the scraper ring 125 to move toward the second connecting ring 134, and the scraper ring 125 hits the second connecting ring 134. The connecting ring 134 vibrates on the scraper ring 125, shaking off the attachments on the scraper ring 125; when the movable rod 113 moves upward, the push rod 127 presses against the bottom surface of the flip plate 121 to push the flip plate 121 to rotate, and the push rod 127 directly Remove it from the slot so that the movable rod 113 moves normally.

The first mounting ring 110 is provided with a material receiving box 112. The material receiving box 112 is an annular structure. The inner diameter of the material receiving box 112 corresponds to the diameter of the valve stem 105. The cleaned attachments fall into the material receiving box 112. The cleaning materials are collected; a sealing door is provided on the side wall of the material receiving box 112. When cleaning the material receiving box 112, the sealing door is opened to clean the inside of the material receiving box 112.

The above description is only an illustration of some preferred embodiments of the present disclosure and the technical principles applied. Persons skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to technical solutions composed of specific combinations of the above technical features, and should also cover the above-mentioned technical solutions without departing from the above-mentioned inventive concept. Other technical solutions formed by any combination of technical features or their equivalent features. For example, a technical solution is formed by replacing the above features with technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to).

Claims (10)

1. A high stability control valve comprising:

a valve body configured to have a cavity structure having one inlet and one outlet;

the valve rod penetrates through the cavity;

the valve cover is used for closing the cavity;

the frame body is provided with an installation platform;

the cylinder drives the valve rod to move;

the method is characterized in that:

the high stability control valve further includes:

the pilot valve clack and the pilot valve core are arranged in the cavity;

the valve cover is provided with a guide hole corresponding to the valve rod, and the frame body is fixed on the valve cover.

2. The high stability control valve of claim 1, wherein: further comprises:

the first mounting ring is arranged on the valve cover;

the second mounting ring is arranged on the first mounting ring;

the scraping blocks are arranged on the second installation block;

the receiving box is arranged on the first mounting ring;

the material receiving box is of an annular structure, and the inner diameter of the material receiving box corresponds to the diameter of the valve rod.

3. The high stability control valve of claim 2, wherein: the scraping blocks comprise a first scraping block and a second scraping block, a first movable groove for the first scraping block to move and a second movable groove for the second scraping block to move are formed in the second mounting ring, and the first movable groove and the second movable groove are staggered.

4. A high stability control valve according to claim 3, wherein: further comprises:

the first push plate pushes the scraping block to move;

the movable rod pushes the first push plate to move;

the second mounting ring is provided with a first cavity communicated with the first movable groove and the second movable groove, and the first push plate is arranged in the first cavity.

5. The high stability control valve of claim 4, wherein: further comprises:

the first connecting rod is arranged at the bottom of the first push plate;

the second push plate is arranged at the bottom of the first connecting rod;

the third push plate is arranged at the bottom of the movable rod;

when the valve rod moves, the first scraping block and the second scraping block extend out of the first movable groove and the second movable groove respectively.

6. The high stability control valve of claim 5, wherein: further comprises:

the second connecting rod is used for connecting the first mounting ring and the second mounting ring;

the driving wheel is in driving fit with the first connecting rod;

the swivel is in transmission fit with the driving wheel;

the first connecting ring is arranged on the second connecting rod;

the first connecting rod is rotatably connected to the bottom of the first push plate, and the swivel is rotatably connected to the first connecting ring.

7. The high stability control valve of claim 4, wherein: further comprises:

the first movable block is arranged at the bottom of the frame body;

the first connecting plate is arranged at the top of the movable rod;

the first connecting block is used for connecting the first movable block and the first connecting plate;

the first connecting spring is arranged on the first movable block;

when the cylinder drives the valve rod to move, the first connecting spring pulls the first movable block to move upwards.

8. The high stability control valve of claim 7, wherein: further comprises:

one end of the transmission rod is arranged above the first movable block;

the first lug is arranged on a piston rod of the cylinder;

and the first lug pushes the transmission rod to rotate when moving upwards along with the piston rod of the air cylinder.

9. The high stability control valve of claim 2, wherein: further comprises:

the second movable block is arranged on the second mounting ring;

the scraping ring is connected with the second movable block;

the fourth push plate is arranged on the movable rod;

the diameter of the scraping ring corresponds to the inner diameter of the second mounting ring;

when the fourth push plate moves downwards along with the movable rod, the fourth push plate pushes the second movable block to move downwards.

10. The high stability control valve of claim 9, wherein: further comprises:

the second connecting ring is connected with the second movable block;

the third connecting rod is arranged on the scraping ring;

the second connecting spring is arranged on the third connecting rod;

the second convex blocks are arranged on the inner wall of the second mounting ring;

the bottom of the second connecting ring is provided with a connecting groove corresponding to the third connecting rod.