Mechanical control valve for conveying oil pipe

Abstract

The invention relates to the field of mechanical control valves, in particular to a conveying oil pipe mechanical control valve which comprises a flow control valve, the flow control valve comprises a valve body, a valve element is rotationally connected to the middle in the valve body, a valve rod is fixedly connected to the middle of the top end of the valve element, and a fixing block is fixedly connected to the top of the valve rod. A sliding groove is formed in the middle of the interior of the fixing block, middle partition blocks are fixedly connected to the upper side and the lower side of the middle of the interior of the sliding groove, sliding blocks are arranged on the two sides of the middle partition blocks, the sliding blocks are slidably connected to the two sides of the interior of the sliding groove, and second connecting rods are fixedly connected to the sides, away from the middle partition blocks, of the sliding blocks; and second half hand wheels are fixedly connected to the ends, away from the sliding blocks, of the second connecting rods correspondingly, the peripheries of the second connecting rods are sleeved with ejection springs correspondingly, and the ejection springs are arranged on the inner sides of the sliding grooves correspondingly, the length of a force arm of a hand wheel on the flow control valve can be increased, and more labor can be saved when people rotate the valve rod and the valve element.

Description

Technical Field

[0001] The invention relates to the field of mechanical control valves, and in particular to a mechanical control valve for an oil delivery pipe. Background Art

[0002] The mechanical control valve of the oil pipeline is a key equipment in the field of oil extraction. It is mainly used to control the output flow and pressure of oil and gas wells and regulate the transportation of oil and gas. Since oil is flammable and explosive, in order to avoid the problem of safety hazards caused by power leakage, traditional oil pipelines usually use manually controlled mechanical valves. However, in actual use, there may be some rock powder mixed in the oil during extraction. Since oil is generally transported under negative pressure, it is generally turbulent during transportation. High-speed oil often damages the valve core and sealing seat in the valve, which will affect the sealing effect of the valve in the long term. At the same time, it is often necessary to close the valve when inspecting the pipeline. After closing the valve, the oil continuously transported from the source end will form a "water hammer effect" to cause a strong impact on the valve core, which will have a greater impact on the service life of the valve. At the same time, the oil pipeline in a negative pressure state will make it difficult to open and close the valve, resulting in people needing to spend a lot of force to open and close the mechanical valve. Therefore, we propose a mechanical control valve for oil pipelines to solve the above-mentioned problems. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a mechanical control valve for an oil delivery pipe.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a mechanical control valve for oil delivery pipe, including a flow control valve, the flow control valve including a valve body, a valve core is rotatably connected in the middle of the valve body, a valve stem is fixedly connected in the middle of the top of the valve core, a fixed block is fixedly connected to the top of the valve stem, a slide groove is arranged in the middle of the fixed block, a middle partition block is fixedly connected to the upper and lower sides of the middle of the slide groove, sliders are arranged on both sides of the middle partition block, the sliders are slidably connected to both sides of the slide groove, a connecting rod 2 is fixedly connected to one side of the slider away from the middle partition block, a semi-handwheel 2 is fixedly connected to one end of the connecting rod 2 away from the slider, a top spring is sleeved on the outer periphery of the connecting rod 2, the top spring is arranged on the inner side of the slide groove, a clamping column is fixedly connected to the middle of one end of the slider away from the connecting rod 2, the clamping column is clamped on both sides of the clamping hole, the clamping hole is arranged in the middle of the connecting rod 1, the connecting rod 1 passes through the middle of the fixed block, the connecting rod 1 is slidably connected to the fixed block, and a semi-handwheel 1 is fixedly connected to both ends of the connecting rod 1.

[0005] Preferably, the top of the valve body is fixedly connected to a top seat, a sealing filler is arranged inside the top seat, the sealing filler is sleeved on the middle part of the outer periphery of the valve stem, the top of the valve stem passes through the top of the bracket, and the bottom of the bracket is respectively fixedly connected to both sides of the middle part of the top end of the valve body.

[0006] Preferably, the top of the valve stem passes through the valve body and the top of the top seat, the valve stem is rotatably connected to the valve body, the top seat and the bracket, a through hole passes through the middle of the valve core, and the diameter of the through hole is the same as the inner diameter of the oil inlet and the oil outlet.

[0007] Preferably, a base is fixedly connected to the bottom of the valve body, a bottom seal is threadedly connected to the middle of the base, the interior of the base is connected to the interior of the valve body, the top of the bottom seal is made of rubber, and the top of the bottom seal is in contact with the bottom of the valve core.

[0008] Preferably, a guide ring is provided on the upper part of the valve core, guide grooves are provided on both sides of the outer periphery of the guide ring, the guide ring is fixedly connected to the lower part of the outer periphery of the valve stem, the guide ring is rotatably connected to the upper part of the valve body, fixed cavities are provided on the front and back sides of the guide ring, a pressure plate is slidably connected to the upper part of the fixed cavity, a guide rod is fixedly connected to one end of the pressure plate close to the guide ring, the ends of the guide rods pass through the limiting openings, the limiting openings are arranged between the guide ring and the fixed cavity, the ends of the guide rods are slidably connected to the inside of the guide grooves, an airbag is provided at the lower part of the fixed cavity, the airbags are arranged in the lower part of the fixed cavity, a return spring is provided in the middle part of the airbag, the bottom of the airbag is connected to the connecting channel, and the connecting channel is arranged at the bottom of the fixed cavity.

[0009] Preferably, the connecting channel is connected to a connecting hole at one end away from the airbag, and the connecting holes are arranged in the middle of the top of the sealing seat, an annular groove is opened on the outer side of the inner middle part of the sealing seat, and evenly distributed air guide channels 2 are arranged on the inner side of the annular groove, and the side of the air guide channel 2 close to the valve core is connected to the air guide channel 1, and the air guide channel 1 and the ends of the air guide channel 2 are connected to a cavity, and the cavity is arranged on the inner side of the sealing seat, and a sealing port is provided on the side of the sealing seat close to the valve core, and an airtight strip is provided in the middle of the inner side of the sealing port.

[0010] Preferably, fixing rings are provided on the front and rear sides of the valve body, mis-sealing plates and buffer plates are provided inside the fixing rings, the buffer plates are provided in front of the mis-sealing plates, evenly distributed filter holes are provided in the middle of the buffer plates and the mis-sealing plates, evenly distributed guide bars are fixedly connected to the outer periphery of the buffer plates, the guide bars are slidably connected to the inside of the limiting grooves, and the limiting grooves are provided on the front side of the fixing rings.

[0011] Preferably, the buffer plates are rotatably connected to the missealing plates via a rotating shaft, and both ends of the rotating shaft are respectively arranged at the middle parts of the buffer plates and the missealing plates, and the outer peripheries of the missealing plates are provided with evenly distributed torsion grooves, and the torsion grooves correspond to the torsion bars, and the limit grooves are fixedly connected to the rear part of the fixing ring, and the rear part of the missealing plates is provided with a buffer spring, and the buffer spring is arranged at the rear part of the fixing ring.

[0012] Preferably, a uniformly distributed second magnetic block is disposed on the outer side of the middle portion of one end of the buffer plate close to the missealing plate, and a uniformly distributed first magnetic block is disposed on the outer side of the middle portion of one end of the missealing plate close to the buffer plate.

[0013] Preferably, an oil inlet is fixedly connected to the middle of the front end of the valve body, an oil outlet is fixedly connected to the middle of the rear end of the valve body, connecting flanges are fixedly connected to the middle of the outer periphery of the oil inlet and the oil outlet, and the oil inlet and the oil outlet are connected to the oil pipeline via the connecting flanges.

[0014] Compared with the prior art, the present invention has the following beneficial effects: When the valve stem is rotated clockwise to close the flow control valve, the guide ring on the valve stem can use the guide groove to drive the guide rod to move, so that the guide rod can drive the pressure plate to move up and down, and the airbag can be compressed by the pressure plate. When the airbag is compressed, the gas inside the airbag will communicate with the connecting channel and the connecting hole to enter the annular groove, and the gas can be dispersed and introduced into the inside of the air guide channel 2 and the air guide channel 1 through the annular groove. The gas can be guided into the cavity through the guidance of the air guide channel 1 and the air guide channel 2, so that the air-tight strip can expand and bulge. At the same time, the sealing port on the inner side of the sealing seat can expand and deform under the action of the internally filled air guide channel 1 and the air guide channel 2, so as to further close the valve core in the closed state, thereby effectively improving the sealing performance of the flow control valve.

[0015] When people need to open the flow control valve, they rotate the valve stem 90° counterclockwise. At this time, the guide groove on the guide ring can drive the guide rod and the pressure plate to move up. At this time, the airbag will rebound under the action of the internal return spring, so that the gas filled in the cavity can be drawn back into the airbag, so that the sealing port can be restored at the same time as the air-tight strip retracts, making it less difficult to rotate the valve core and reducing the force required to rotate the flow control valve, which is beneficial to practical use.

[0016] When oil flows through the flow control valve through the oil pipeline, the incoming oil will first encounter the buffer plate at the oil inlet. The buffer plate and the mismatched sealing plate can achieve synchronous interception and buffering of the oil. The buffer spring can effectively reduce the output speed of the oil, reducing the impact of the oil on the valve core inside the flow control valve. At the same time, it can effectively filter the fine impurities in the oil to prevent the impurities in the oil from scratching the valve core and the sealing seat, which can greatly reduce the damage to the valve core and is conducive to the long-term use of the flow control valve.

[0017] When the oil is being transported and the pipeline is being inspected, if people need to close the flow control valve, the oil continuously transported from the source end will form a "water hammer effect". When the impact force of the oil is too great, the buffer plate and the mis-sealing plate will be forced back by the surging oil. At this time, the mis-sealing plate will contact the torsion bar on the inner rear side of the fixed ring, and the torsion bar can be engaged with the torsion groove on the mis-sealing plate, so that the mis-sealing plate will be driven to deflect, so that the mis-sealing plate and the buffer plate can be staggered, and the filter holes on the buffer plate and the mis-sealing plate can be closed, so that the oil in the oil pipeline can be separated from the inside of the valve body, reducing the damage of the "water hammer effect" to the flow control valve.

[0018] When the oil in the oil pipeline returns to calm, the buffer plate and the missealing plate will return to their original positions under the action of the buffer spring. Afterwards, the missealing plate will be pulled back to its original position under the action of the magnetic block 2 and the magnetic block 1 inside the buffer plate and the missealing plate, thereby reconnecting the filter holes on the buffer plate and the missealing plate, which is beneficial to practical use.

[0019] During use, when the flow control valve has been used for too long or the internal pressure of the flow control valve is too high, making it difficult for the valve stem to rotate, people can pull the second half handwheel on the top of the flow control valve to both sides, so that the clamping column on the slider is disengaged from the clamping hole, and then pull the first half handwheel to one side, thereby lengthening the force arm length of the handwheel on the flow control valve, which makes it easier for people to turn the valve stem and the valve core. After use, people can slowly move back the side of the half handwheel, and then when the clamping column corresponds to the clamping hole, the clamping column can be clamped into the inside of the clamping hole through the top spring, thereby realizing the resetting of the first half handwheel and the second half handwheel, which is beneficial to actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a three-dimensional structure of a mechanical control valve for an oil delivery pipe according to the present invention from a side view; Figure 2 This is a schematic diagram of the internal structure of a mechanical control valve for an oil delivery pipe according to the present invention; Figure 3 It is a partial structural schematic diagram of a guide ring of a mechanical control valve for an oil delivery pipe according to the present invention; Figure 4It is a partial structural schematic diagram of a valve body of a mechanical control valve for an oil delivery pipe according to the present invention; Figure 5 It is a schematic diagram of the local structure inside the fixed ring of a mechanical control valve for an oil delivery pipe of the present invention; Figure 6 A mechanical control valve for an oil pipeline according to the present invention Figure 4 A in the enlarged view; Figure 7 It is a partial structural schematic diagram of a torsion strip and a limit groove of a mechanical control valve for an oil delivery pipe according to the present invention; Figure 8 This is one of the partial structural schematic diagrams of a buffer plate and a misaligned sealing plate of a mechanical control valve for an oil pipeline according to the present invention; Fig. 9 This is a second schematic diagram of the local structure of a buffer plate and a misaligned sealing plate of a mechanical control valve for an oil pipeline according to the present invention; Fig.10 It is a schematic diagram of the local structure inside a fixed block of a mechanical control valve for an oil delivery pipe according to the present invention; Fig.11 It is a partial structural schematic diagram of half handwheel one and half handwheel two of a mechanical control valve for an oil delivery pipe according to the present invention.

[0021] 1. Flow control valve; 101. Valve body; 102. Half handwheel 1; 103. Valve stem; 104. Top seat; 105. Bracket; 106. Connecting flange; 107. Oil inlet; 108. Base; 109. Oil outlet; 110. Retaining ring; 111. Buffer plate; 112. Valve core; 113. Bottom seal; 114. Air bag; 115. Sealing packing; 116. Guide ring; 117. Guide groove; 118. Sealing seat; 119. Return spring; 120. Guide rod; 121. Pressure plate; 122. Fixed cavity; 123. Connecting channel; 124. Seal plate; 125. Guide strip; 126. Torsion groove; 127. Buffer spring; 128. Air guide channel one; 129. Annular groove; 130. Connecting hole; 131. Air guide channel two; 132. Airtight strip; 133. Sealing port; 134. Cavity; 135. Torsion strip; 136. Limiting groove; 137. Rotating shaft; 138. Magnetic block one; 139. Magnetic block two; 140. Fixed block; 141. Connecting rod one; 142. Middle partition block; 143. Sliding block; 144. Half handwheel two; 145. Connecting rod two; 146. Top spring; 147. Sliding groove; 148. Clamping column; 149. Clamping hole; 150. Limiting port. DETAILED DESCRIPTION

[0022] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0023] like Figure 1-Figure 11 The mechanical control valve of a transmission oil pipeline shown in the figure comprises a flow control valve 1, the flow control valve 1 comprises a valve body 101, a valve core 112 is rotatably connected to the middle of the valve body 101, a valve stem 103 is fixedly connected to the middle of the top of the valve core 112, a fixed block 140 is fixedly connected to the top of the valve stem 103, a slide groove 147 is arranged in the middle of the fixed block 140, a middle partition block 142 is fixedly connected to the upper and lower sides of the middle of the slide groove 147, sliders 143 are arranged on both sides of the middle partition block 142, the sliders 143 are slidably connected to the two sides of the slide groove 147, and the side of the slider 143 away from the middle partition block 142 is fixedly connected to The connecting rod 145 and the connecting rod 145 are fixedly connected to the half hand wheel 144 at one end away from the slider 143. The outer periphery of the connecting rod 145 is sleeved with a top spring 146. The top spring 146 is arranged on the inner side of the slide groove 147. The middle part of the end of the slider 143 away from the connecting rod 145 is fixedly connected with a clamping column 148. The clamping column 148 is clamped on both sides of the inner part of the clamping hole 149. The clamping hole 149 is arranged in the middle part of the connecting rod 141. The connecting rod 141 passes through the middle part of the fixed block 140. The connecting rod 141 is slidably connected to the fixed block 140. Both ends of the connecting rod 141 are fixedly connected to the half hand wheel 102. Furthermore, in specific implementation, during use, when the flow control valve 1 has been used for too long or the internal pressure of the flow control valve 1 is too high, making it difficult for the valve stem 103 to rotate, people can pull the half handwheel 2 144 on the top of the flow control valve 1 to both sides, so that the clamping column 148 on the slider 143 disengages from the clamping hole 149, and then pull the half handwheel 1 102 to one side, thereby lengthening the force arm length of the handwheel on the flow control valve 1, so that people can save more effort when turning the valve stem 103 and the valve core 112, which is beneficial to actual use. After use, people can slowly move back the side of the half handwheel 1 02 that has been pulled out, and then when the clamping column 148 corresponds to the clamping hole 149, the clamping column 148 can be clamped into the inside of the clamping hole 149 through the top spring 146, thereby realizing the resetting of the half handwheel 1 102 and the half handwheel 2 144, which is beneficial to actual use.

[0024] The top of the valve body 101 is fixedly connected with a top seat 104, and a sealing packing 115 is arranged inside the top seat 104. The sealing packing 115 is sleeved on the middle part of the outer periphery of the valve stem 103. The top of the valve stem 103 passes through the top of the bracket 105. The bottom of the bracket 105 is respectively fixedly connected to both sides of the middle part of the top of the valve body 101. The top of the valve stem 103 passes through the valve body 101 and the top of the top seat 104. The valve stem 103 is rotatably connected to the valve body 101, the top seat 104 and the bracket 105. A through hole is passed through the middle of the valve core 112, and the diameter of the through hole is the same as the inner diameter of the oil inlet 107 and the oil outlet 109. Furthermore, in a specific implementation, people can connect the flow control valve 1 to the oil pipeline through the connecting flange 106. When in use, people can drive the valve stem 103 to rotate through the half handwheel 102 and the half handwheel 2 144, and can drive the valve core 112 at the bottom to rotate through the valve stem 103. When the through hole on the valve core 112 coincides with the axis between the oil inlet 107 and the oil outlet 109, the flow control valve 1 is in an open state. When the valve core 112 is driven to rotate 90°, the axis of the through hole on the valve core 112 is perpendicular to the axis between the oil inlet 107 and the oil outlet 109. At this time, the flow control valve 1 is in a closed state, and the support and closure of the flow control valve 1 can be achieved through the sealing seats 118 on both sides of the valve core 112.

[0025] The bottom of the valve body 101 is fixedly connected with a base 108, the middle part of the base 108 is threadedly connected with a bottom seal 113, the inside of the base 108 is connected with the inside of the valve body 101, the top of the bottom seal 113 is made of rubber, and the top of the bottom seal 113 is in contact with the bottom of the valve core 112, the middle part of the front end of the valve body 101 is fixedly connected with an oil inlet 107, the middle part of the rear end of the valve body 101 is fixedly connected with an oil outlet 109, the middle part of the outer periphery of the oil inlet 107 and the oil outlet 109 are fixedly connected with a connecting flange 106, and the oil inlet 107 and the oil outlet 109 are connected to the oil pipeline through the connecting flange 106; Furthermore, in specific implementation, when oil flows through the flow control valve 1 through the oil pipeline, the incoming oil will first encounter the buffer plate 111 at the oil inlet 107, and the buffer plate 111 and the mis-sealing plate 124 can realize synchronous interception and buffering of the oil. The buffer spring 127 can effectively reduce the output speed of the oil, reduce the impact of the oil on the valve core 112 inside the flow control valve 1, and at the same time can realize effective filtration of fine impurities in the oil, avoiding impurities in the oil from scratching the valve core 112 and the sealing seat 118, which can greatly reduce the damage to the valve core 112, which is beneficial to the long-term use of the flow control valve 1.

[0026] Among them, a guide ring 116 is provided on the upper part of the valve core 112, and guide grooves 117 are provided on both sides of the outer periphery of the guide ring 116. The guide ring 116 is fixedly connected to the lower part of the outer periphery of the valve stem 103, and the guide ring 116 is rotatably connected to the upper part of the valve body 101. The front and rear sides of the guide ring 116 are provided with a fixed cavity 122, and the upper part of the fixed cavity 122 is slidably connected with a pressure plate 121, and the end of the pressure plate 121 close to the guide ring 116 is fixedly connected to a guide rod 120, and the end of the guide rod 120 is fixedly connected to the guide rod 120. The limiting openings 150 are all penetrated, and the limiting openings 150 are all arranged between the guide ring 116 and the fixed cavity 122. The ends of the guide rods 120 are all slidably connected to the inside of the guide groove 117. The lower part of the fixed cavity 122 is provided with an airbag 114, and the airbag 114 is arranged in the lower part of the fixed cavity 122. The middle part of the airbag 114 is provided with a return spring 119. The bottom of the airbag 114 is connected to the connecting channel 123, and the connecting channel 123 is arranged at the bottom of the fixed cavity 122. Furthermore, in a specific implementation, when the valve stem 103 is rotated clockwise to close the flow control valve 1, the guide ring 116 on the valve stem 103 can use the guide groove 117 to drive the guide rod 120 to move, so that the guide rod 120 can drive the pressure plate 121 to move up and down, and the pressure plate 121 can compress the airbag 114. When the airbag 114 is compressed, the gas inside the airbag 114 will communicate with the connecting channel 123 and the connecting hole 130 to enter the annular groove 129, and the annular groove 129 can The gas can be dispersed and introduced into the interior of the gas guide channel 1 131 and the gas guide channel 1 128. The gas can be guided into the interior of the cavity 134 through the guidance of the gas guide channel 1 128 and the gas guide channel 131, so that the airtight strip 132 can expand and bulge. At the same time, the sealing port 133 on the inner side of the sealing seat 118 can expand and deform under the action of the gas guide channel 1 128 and the gas guide channel 131 filled inside, thereby further closing the valve core 112 in the closed state, thereby effectively improving the sealing performance of the flow control valve 1.

[0027] Among them, the end of the connecting channel 123 away from the air bag 114 is connected with a connecting hole 130, and the connecting hole 130 is arranged in the middle of the top of the sealing seat 118. The outer side of the inner middle part of the sealing seat 118 is provided with an annular groove 129, and the inner side of the annular groove 129 is provided with a uniformly distributed second air guide channel 131. The side of the second air guide channel 131 close to the valve core 112 is connected with the first air guide channel 128, and the ends of the first air guide channel 128 and the second air guide channel 131 are connected with a cavity 134, and the cavity 134 is arranged on the inner side of the sealing seat 118. The side of the sealing seat 118 close to the valve core 112 is provided with a sealing port 133, and the middle part of the inner side of the sealing port 133 is provided with an airtight strip 132; Furthermore, in specific implementation, when people need to open the flow control valve 1, they rotate the valve stem 103 counterclockwise by 90°. At this time, the guide groove 117 on the guide ring 116 can drive the guide rod 120 and the pressure plate 121 to move upward. At this time, the airbag 114 will rebound under the action of the internal return spring 119, so that the gas filled in the cavity 134 can be drawn back into the airbag 114, so that the air-tight strip 132 can be retracted while the sealing port 133 can be restored at the same time, which reduces the difficulty of rotating the valve core 112 and reduces the force required to rotate the flow control valve 1, which is beneficial to actual use.

[0028] Among them, the front and rear sides of the valve body 101 are both provided with a fixing ring 110, the fixing ring 110 is both provided with a mis-sealing plate 124 and a buffer plate 111, the buffer plate 111 is both provided at the front of the mis-sealing plate 124, the middle of the buffer plate 111 and the mis-sealing plate 124 are both provided with evenly distributed filter holes, the outer periphery of the buffer plate 111 is fixedly connected with evenly distributed guide bars 125, the guide bars 125 are all slidably connected inside the limiting groove 136, the limiting groove 136 is all provided at the front side of the fixing ring 110, the buffer plate 111 is rotatably connected with the mis-sealing plate 124 through a rotating shaft 137, and the two ends of the rotating shaft 137 are respectively provided with The buffer plate 111 is arranged in the middle of the missealing plate 124. The periphery of the missealing plate 124 is provided with uniformly distributed torsion grooves 126. The torsion grooves 126 correspond to the torsion bars 135. The limiting grooves 136 are fixedly connected to the rear of the fixing ring 110. The rear of the missealing plate 124 is provided with a buffer spring 127. The buffer spring 127 is arranged in the rear of the fixing ring 110. The middle outer side of one end of the buffer plate 111 close to the missealing plate 124 is provided with uniformly distributed magnetic blocks 139. The middle outer side of one end of the missealing plate 124 close to the buffer plate 111 is provided with uniformly distributed magnetic blocks 138. Furthermore, in specific implementation, when the oil is being transported and the pipeline is being inspected and repaired, and people need to close the flow control valve 1, the oil continuously transported from the source end will form a "water hammer effect". When the oil impact force is too large, the buffer plate 111 and the mis-sealing plate 124 will be forced back by the surging oil. At this time, the mis-sealing plate 124 will contact the torsion bar 135 on the inner rear side of the fixing ring 110, and the torsion bar 135 can be engaged with the torsion groove 126 on the mis-sealing plate 124, so that the mis-sealing plate 124 will be driven to deflect, so that the mis-sealing plate 124 can be staggered with the buffer plate 111, and the buffer plate 111 can be adjusted. 11 and the closure of the filter holes on the missealing plate 124 can separate the oil in the oil pipeline from the inside of the valve body 101, reducing the damage of the "water hammer effect" to the flow control valve 1, which is beneficial to practical use. At the same time, when the oil in the oil pipeline calms down, the buffer plate 111 and the missealing plate 124 will return to their original positions under the action of the buffer spring 127, and then the missealing plate 124 will be pulled to reset under the action of the magnetic block 2 139 and the magnetic block 1 138 on the inner side of the buffer plate 111 and the missealing plate 124, so as to re-establish the connection between the filter holes on the buffer plate 111 and the missealing plate 124, which is beneficial to practical use.

[0029] Working principle: In actual use, people can connect the flow control valve 1 to the oil pipeline through the connecting flange 106. When in use, people can drive the valve stem 103 to rotate through the half handwheel 102 and the half handwheel 2 144, and the valve core 112 at the bottom can be driven to rotate through the valve stem 103. When the through hole on the valve core 112 coincides with the axis between the oil inlet 107 and the oil outlet 109, the flow control valve 1 is in the open state. When the valve core 112 is driven to rotate 90°, the axis of the through hole on the valve core 112 is perpendicular to the axis between the oil inlet 107 and the oil outlet 109. At this time, the flow control valve 1 is in the closed state, and the support and sealing of the flow control valve 1 can be achieved through the sealing seats 118 on both sides of the valve core 112. At the same time, when the valve stem 103 is rotated clockwise to close the flow control valve 1, the guide ring 116 on the valve stem 103 can use the guide groove 117 to drive the guide rod 120 to move, so that the guide rod 120 can drive the pressure plate 121 to move up and down, and the air bag 114 can be compressed by the pressure plate 121. When the air bag 114 is compressed, the gas inside the air bag 114 will communicate with the connecting channel 123 and the connecting hole 130 to enter the annular groove 129, and the gas can be dispersed and introduced into the gas guide channel 2 131 and the gas guide channel 1 128 through the annular groove 129. The gas can be guided into the cavity 134 through the guidance of the gas guide channel 1 128 and the gas guide channel 2 131, so that the airtight strip 132 can expand and bulge, and at the same time At this time, the sealing port 133 on the inner side of the sealing seat 118 can expand and deform under the action of the internally filled air guide channel 128 and the air guide channel 2 131, so as to further seal the valve core 112 in the closed state, thereby effectively improving the sealing performance of the flow control valve 1. At the same time, when people need to open the flow control valve 1, they rotate the valve stem 103 counterclockwise by 90°. At this time, the guide groove 117 on the guide ring 116 can drive the guide rod 120 and the pressure plate 121 to move upward. At this time, the air bag 114 will rebound under the action of the internal return spring 119, so that the gas filled in the cavity 134 can be drawn back into the air bag 114, so that the airtight strip 132 shrinks and the sealing port 133 can be restored at the same time, so that the valve core 112 rotates The difficulty of rotating the flow control valve 1 is reduced, and the force required for rotating the flow control valve 1 is reduced, which is beneficial to actual use. In actual use, when the oil flows through the flow control valve 1 through the oil pipeline, the incoming oil will first encounter the buffer plate 111 at the oil inlet 107. The buffer plate 111 and the mis-sealing plate 124 can realize synchronous interception and buffering of the oil. The buffer spring 127 can effectively reduce the output speed of the oil, reduce the impact of the oil on the valve core 112 inside the flow control valve 1, and at the same time, effectively filter the fine impurities in the oil, avoid the impurities in the oil from scratching the valve core 112 and the sealing seat 118, and can greatly reduce the damage to the valve core 112, which is beneficial to the long-term use of the flow control valve 1. When the oil is being transported, the pipeline is inspected and repaired.When people need to close the flow control valve 1, the oil continuously delivered from the source end will form a "water hammer effect". When the oil impact force is too large, the buffer plate 111 and the mis-sealing plate 124 will be forced back by the surging oil. At this time, the mis-sealing plate 124 will contact the torsion bar 135 on the inner rear side of the fixing ring 110, and the torsion bar 135 can be engaged with the torsion groove 126 on the mis-sealing plate 124, so that the mis-sealing plate 124 will be driven to deflect, so that the mis-sealing plate 124 and the buffer plate 111 can be separated. 1 is staggered to close the filter holes on the buffer plate 111 and the mis-sealing plate 124, so that the oil in the oil pipeline can be separated from the inside of the valve body 101, reducing the damage of the "water hammer effect" to the flow control valve 1, which is beneficial to practical use. At the same time, when the oil in the oil pipeline calms down, the buffer plate 111 and the mis-sealing plate 124 will return to their original positions under the action of the buffer spring 127, and then the second magnetic block 139 and the first magnetic block 138 on the inner side of the buffer plate 111 and the mis-sealing plate 124 will return to their original positions. , it will pull the wrong sealing plate 124 to reset, and reconnect the buffer plate 111 with the filter holes on the wrong sealing plate 124, which is beneficial to actual use. During use, when the flow control valve 1 has been used for too long or the internal pressure of the flow control valve 1 is too high, making it difficult for the valve stem 103 to rotate, people can pull the half hand wheel 2 144 on the top of the flow control valve 1 to both sides, so that the clamping column 148 on the slider 143 is separated from the clamping hole 149, and then pull the half hand wheel 1 102 to one side, Thus, the arm length of the hand wheel on the flow control valve 1 can be lengthened, so that people can save more effort when turning the valve stem 103 and the valve core 112, which is beneficial to practical use. After use, people can slowly move the side of the half hand wheel 102 that has been pulled out back, and then when the clamping column 148 corresponds to the clamping hole 149, the clamping column 148 can be clamped into the clamping hole 149 through the top spring 146, so that the half hand wheel 102 and the half hand wheel 2 144 can be reset, which is beneficial to practical use.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A mechanical control valve for an oil pipeline, comprising a flow control valve (1), characterized in that: The flow control valve (1) comprises a valve body (101), a valve core (112) being rotatably connected to the middle of the valve body (101), a valve stem (103) being fixedly connected to the middle of the top of the valve core (112), a fixed block (140) being fixedly connected to the top of the valve stem (103), a slide groove (147) being provided in the middle of the fixed block (140), a middle partition block (142) being fixedly connected to the upper and lower sides of the middle of the slide groove (147), sliders (143) being provided on both sides of the middle partition block (142), the sliders (143) being slidably connected to the two sides of the slide groove (147), the side of the slider (143) away from the middle partition block (142) being fixedly connected to a second connecting rod (145), the second connecting rod (145) The end of the connecting rod (145) away from the slider (143) is fixedly connected to the second half hand wheel (144), the outer circumference of the second connecting rod (145) is sleeved with a top spring (146), and the top spring (146) is arranged on the inner side of the slide groove (147), and the middle part of the end of the sliding block (143) away from the second connecting rod (145) is fixedly connected to a clamping column (148), and the clamping column (148) is clamped on both sides of the inside of the clamping hole (149), and the clamping hole (149) is arranged in the middle part of the first connecting rod (141), and the first connecting rod (141) passes through the middle part of the fixed block (140), and the first connecting rod (141) is slidably connected to the fixed block (140), and the two ends of the first connecting rod (141) are fixedly connected to the first half hand wheel (102).

2. The mechanical control valve for oil delivery pipe according to claim 1, characterized in that: The top of the valve body (101) is fixedly connected to a top seat (104), and a sealing filler (115) is arranged inside the top seat (104). The sealing filler (115) is sleeved on the middle part of the outer periphery of the valve stem (103). The top of the valve stem (103) passes through the top of the bracket (105), and the bottom of the bracket (105) is fixedly connected to both sides of the middle part of the top of the valve body (101).

3. The mechanical control valve for oil delivery pipe according to claim 1, characterized in that: The top of the valve stem (103) passes through the top of the valve body (101) and the top of the top seat (104); the valve stem (103) is rotatably connected to the valve body (101), the top seat (104) and the bracket (105); a through hole passes through the middle of the valve core (112); the diameter of the through hole is the same as the inner diameter of the oil inlet (107) and the oil outlet (109).

4. The mechanical control valve for oil delivery pipe according to claim 1, characterized in that: The bottom of the valve body (101) is fixedly connected to a base (108), a bottom seal (113) is threadedly connected to the middle of the base (108), the interior of the base (108) is connected to the interior of the valve body (101), the top of the bottom seal (113) is made of rubber, and the top of the bottom seal (113) is in contact with the bottom of the valve core (112).

5. The mechanical control valve for oil delivery pipe according to claim 1, characterized in that: A guide ring (116) is provided on the upper part of the valve core (112), and guide grooves (117) are provided on both sides of the outer periphery of the guide ring (116). The guide ring (116) is fixedly connected to the lower part of the outer periphery of the valve stem (103), and the guide ring (116) is rotatably connected to the inner upper part of the valve body (101). Fixed cavities (122) are provided on the front and rear sides of the guide ring (116), and a pressure plate (121) is slidably connected to the inner upper part of the fixed cavity (122). One end of the pressure plate (121) close to the guide ring (116) is fixedly connected to a guide rod (120), and the end of the guide rod (120) is The limiting opening (150) is penetrated, and the limiting opening (150) is arranged between the guide ring (116) and the fixed cavity (122). The end of the guide rod (120) is slidably connected to the inside of the guide groove (117). The lower part of the fixed cavity (122) is provided with an airbag (114). The airbag (114) is arranged in the lower part of the fixed cavity (122). A return spring (119) is arranged in the middle part of the airbag (114). The bottom of the airbag (114) is connected to the connecting channel (123), and the connecting channel (123) is arranged at the bottom of the fixed cavity (122).

6. The mechanical control valve for oil delivery pipe according to claim 5, characterized in that: The end of the connecting channel (123) away from the air bag (114) is connected to a connecting hole (130), and the connecting hole (130) is arranged in the middle of the top of the sealing seat (118). The sealing seat (118) is provided with an annular groove (129) on the outer side of the inner middle part, and the inner side of the annular groove (129) is provided with evenly distributed air guide channel 2 (131). The side of the air guide channel 2 (131) close to the valve core (112) is connected to the air guide channel 1 (128), and the ends of the air guide channel 1 (128) and the air guide channel 2 (131) are connected to a cavity (134), and the cavity (134) is arranged on the inner side of the sealing seat (118). The side of the sealing seat (118) close to the valve core (112) is provided with a sealing port (133), and the inner middle part of the sealing port (133) is provided with an airtight strip (132).

7. The mechanical control valve for oil delivery pipe according to claim 1, characterized in that: The valve body (101) is provided with a fixing ring (110) at the front and rear sides thereof, and a mis-sealing plate (124) and a buffer plate (111) are provided at the inside of the fixing ring (110). The buffer plate (111) is provided at the front of the mis-sealing plate (124), and evenly distributed filter holes are provided at the middle of the buffer plate (111) and the mis-sealing plate (124). Evenly distributed guide bars (125) are fixedly connected to the outer periphery of the buffer plate (111), and the guide bars (125) are slidably connected to the inside of the limiting groove (136). The limiting groove (136) is provided at the front side of the fixing ring (110).

8. The mechanical control valve for oil delivery pipe according to claim 7, characterized in that: The buffer plates (111) are rotatably connected to the mis-sealing plates (124) via a rotating shaft (137); two ends of the rotating shaft (137) are respectively arranged at the middle of the buffer plates (111) and the mis-sealing plates (124); the periphery of the mis-sealing plates (124) is provided with evenly distributed torsion grooves (126); the torsion grooves (126) correspond to the torsion bars (135); the limiting grooves (136) are fixedly connected to the rear portion of the fixing ring (110); a buffer spring (127) is arranged at the rear portion of the mis-sealing plates (124); and the buffer spring (127) is arranged at the rear portion of the fixing ring (110).

9. The mechanical control valve for oil delivery pipe according to claim 7, characterized in that: A uniformly distributed second magnetic block (139) is disposed on the outer side of the middle portion of one end of the buffer plate (111) close to the missealing plate (124), and a uniformly distributed first magnetic block (138) is disposed on the outer side of the middle portion of one end of the missealing plate (124) close to the buffer plate (111).

10. The mechanical control valve for oil delivery pipe according to claim 1, characterized in that: An oil inlet (107) is fixedly connected to the middle of the front end of the valve body (101), and an oil outlet (109) is fixedly connected to the middle of the rear end of the valve body (101). A connecting flange (106) is fixedly connected to the middle of the outer periphery of the oil inlet (107) and the oil outlet (109). The oil inlet (107) and the oil outlet (109) are connected to the oil pipeline via the connecting flange (106).

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