Impermeable pneumatic valve

Abstract

The invention relates to the technical field of anti-seepage valves and discloses an anti-seepage pneumatic valve which comprises a valve body, an outlet is formed in the top of the right side of the valve body, a nozzle is fixedly installed on the right side of the outlet of the valve body, a pneumatic assembly is arranged on the top face of a round opening of the valve body, and the pneumatic assembly comprises a valve deck. The valve cover is fixedly installed on the top face of a round opening of the valve body, a round hole is formed in the middle of the top face of the valve cover, a leakage-proof ring is fixedly installed on the inner wall of the round hole of the valve cover, a U-shaped frame is fixed to the top face of the valve cover, an air cylinder is fixedly installed at the top end in the U-shaped frame, and a valve rod is fixed to the bottom face of the telescopic end of the air cylinder. According to the pneumatic valve, liquid enters the circular groove of the valve ring through the circular ring, the circular ring blocks the liquid permeating from the edge of the valve ring, and therefore the problem that the liquid permeates from the edge of the valve ring, and consequently the closure effect of the pneumatic valve is poor is solved.

Description

Technical Field

[0001] The invention relates to the technical field of anti-seepage valves, in particular to an anti-seepage pneumatic valve. Background Art

[0002] Pneumatic valves are devices that use compressed gas to drive the opening and closing of valves. The main function of anti-permeability pneumatic valves is to prevent liquid from leaking out of the valve after the valve is closed. Anti-permeability pneumatic valves can adapt to various complex industrial control scenarios to ensure the safety and reliability of the system.

[0003] Patent No. CN219774919U discloses a drain solenoid valve with an anti-drip function, including: a micro motor and a valve body, the two sides of the micro motor are respectively fixedly connected with connecting plates, the two connecting plates are provided with through holes, the two through holes are respectively plugged with bolts, and the two bolts are respectively threadedly connected to the top of the valve body, and by setting a sealing plate, the water inlet can be better sealed, thereby preventing water from entering the valve body and causing dripping. By setting a knob, turning the knob drives the worm to rotate, and the rotation of the worm causes the worm wheel meshing with it to rotate, thereby driving the rotating rod to rotate, thereby facilitating the control of the opening and closing of the sealing plate, and the worm wheel and the worm have good self-locking properties, which can achieve a better fixing effect when the sealing plate is closed.

[0004] However, the current drain solenoid valve with anti-drip function has the following problems: when the drain solenoid valve with anti-drip function is in use, a small amount of liquid will leak out from the edge of the valve ring when the valve is closed, which will lead to the problem of poor interception effect of the pneumatic valve. Therefore, we propose an anti-permeability pneumatic valve. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an anti-permeation pneumatic valve, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an anti-permeability pneumatic valve, comprising a valve body, an outlet is opened at the top right side of the valve body, a nozzle is fixedly installed on the right side of the outlet of the valve body, an inlet is opened at the bottom left side of the valve body, a round opening is opened on the top surface of the valve body, and a pneumatic component is arranged on the top surface of the round opening of the valve body; The pneumatic assembly includes a valve cover, which is fixedly mounted on the top surface of the circular opening of the valve body, a circular hole is opened in the middle of the top surface of the valve cover, a leak-proof ring is fixedly mounted on the inner wall of the circular hole of the valve cover, a U-shaped frame is fixedly mounted on the top surface of the valve cover, a cylinder is fixedly mounted on the top of the inner top of the U-shaped frame, a valve stem is fixedly mounted on the bottom surface of the telescopic end of the cylinder, the outer wall of the valve stem is slidably connected to the inner wall of the leak-proof ring, a disc is fixedly mounted on the bottom surface of the valve stem, the outer wall of the disc is in sliding contact with the inner wall of the valve body, a valve ring is fixedly mounted on the inner top of the valve body, and the valve ring is fixedly mounted on the inner top of the valve body. The valve ring is located below the outlet of the valve body, a circular groove is provided on the top surface of the valve ring, a round block is fixed in the middle of the bottom surface of the disc, a round ring is fixed on the bottom surface of the disc, the inner wall of the valve ring is on the movement trajectory of the outer wall of the round block, the inner wall of the circular groove of the valve ring is on the movement trajectory of the outer wall of the round ring, the round block enters the valve ring, the round block blocks the valve ring, so that the liquid in the valve body will not flow out of the valve ring, the ring enters the circular groove of the valve ring, the ring blocks the liquid that penetrates from the edge of the valve ring, and an anti-shake component is arranged on the top of the outer wall of the valve stem.

[0007] According to the above technical solution, the anti-shake component includes a thin rod, which passes through and is fixed to the top of the outer wall of the valve stem, and sliders are fixed at both ends of the thin rod, and circular convex heads are provided on the front and back sides of the two sliders, and U-shaped groove plates are fixed on the left and right sides of the inner wall of the U-shaped frame, and sliding grooves are opened on the front and back sides of the two U-shaped groove plates, and the inner walls of the two U-shaped groove plates are slidably connected with the outer walls of the two sliders, and the inner walls of the sliding grooves of the two U-shaped groove plates are in sliding contact with the outer walls of the circular convex heads of the two sliders, and the slider moves downward in the U-shaped groove plate, and the circular convex head of the slider moves downward in the sliding groove of the U-shaped groove plate, and under the action of friction, the shaking of the valve stem when it moves downward is reduced; Limiting devices are arranged on both sides of the outer wall of the thin rod, and an oil pressing device is arranged on the bottom surface of the limiting device.

[0008] According to the above technical solution, the outlet of the valve body is fixedly connected to the left side of the nozzle by bolts, the circular top surface of the valve body is fixedly connected to the bottom surface of the valve cover by bolts, and a plurality of bolt holes are opened on the left side of the inlet of the valve body.

[0009] According to the above technical solution, a bracket is provided on the bottom surface of the cylinder, the outer wall of the bracket is fixedly connected to the inner wall of the U-shaped frame, the bottom surface of the bracket is provided with a round opening, and the telescopic end of the cylinder is in sliding contact with the inner wall of the round opening of the bracket.

[0010] According to the above technical solution, the limiting device includes two straight ring blocks, two sliding columns, two springs and two rubber pads. The two straight ring blocks are respectively fixed on both sides of the outer wall of the thin rod. The bottom surfaces of the two straight ring blocks are provided with circular holes. The two sliding columns are respectively slidably installed on the inner walls of the circular holes of the two straight ring blocks. The two springs are respectively fixed on the top surfaces of the two sliding columns. The ends of the two springs away from the two sliding columns are respectively fixedly connected to the top ends of the circular holes of the two straight ring blocks. The two rubber pads are respectively fixed on the bottom surfaces of the two sliding columns. The rubber pads are in contact with the valve cover. Under the action of the extrusion force, the springs on the sliding columns begin to shrink. Under the elastic force of the springs, the disc will not hit the valve ring.

[0011] According to the above technical scheme, the limiting device also includes two horizontal plates, two chamfered blocks and four short plates. The two horizontal plates are respectively fixed on the top of the side of the two straight ring blocks away from each other, and the two chamfered blocks are respectively fixed on the end of the two horizontal plates away from the two straight ring blocks. The outer walls of the two chamfered blocks are in sliding contact with the inner wall of the U-shaped groove plate. The four short plates are respectively fixed in groups of two on the front and back sides of the two chamfered blocks. The outer walls of the four short plates are in sliding contact with the inner walls of the slide grooves of the two U-shaped groove plates. The chamfers of the chamfered blocks scrape off the rust blocks in the U-shaped groove plates, and the short plates scrape off the rust blocks in the slide grooves, so that the rust blocks in the U-shaped groove plates will not block the valve stem from moving downward.

[0012] According to the above technical solution, the two straight ring blocks are located on the left and right sides of the valve stem, the top surface of the valve cover is on the movement trajectory of the bottom surfaces of the two rubber pads, and the two chamfered blocks are chamfered on the sides away from each other.

[0013] According to the above technical scheme, the oil pressure device includes a circular frame, two J-shaped rods, two arc plates and two sponge blocks. The circular frame is fixed to the bottom surfaces of the two horizontal plates, the two J-shaped rods are embedded in the front and back of the inner wall of the circular frame, the two arc plates are respectively fixed to the ends of the two J-shaped rods away from the circular frame, and the two sponge blocks are respectively fixed to the bottom of the side where the two arc plates are close to each other. The side where the two sponge blocks are close to each other is in sliding contact with the outer wall of the valve stem, and the bottom of the sponge block is in contact with the valve cover. Under the action of the extrusion force, the sponge block squeezes the lubricating oil onto the surface of the valve stem, so that the surface of the valve stem is coated with the lubricating oil.

[0014] According to the above technical solution, the oil pressure device also includes two connecting rings, two straight plates and two square plates. The two connecting rings are respectively fixed on the bottom of the outer wall of the two J-shaped rods, the two straight plates are respectively fixed on the side of the two connecting rings away from each other, and the two square plates are respectively fixed on one end of the two straight plates away from the two connecting rings. The side of the two square plates away from each other is fixedly connected to the side of the two ring straight blocks close to each other. When the sponge block is squeezed, the straight plate rests on the edge of the connecting ring to prevent the J-shaped rod in the connecting ring from being deformed and offset.

[0015] According to the above technical solution, the two J-shaped rods are respectively located at the top of one side of the two straight ring blocks close to each other, the top surface of the valve cover is on the movement trajectory of the bottom surfaces of the two sponge blocks, and the two square plates are located at the bottom of the outer walls of the two straight ring blocks.

[0016] The present invention provides an anti-permeation pneumatic valve. It has the following beneficial effects: (1) The present invention cooperates with a U-shaped groove plate through a valve cover, a leak-proof ring, a U-shaped frame, a cylinder, a valve stem, a disc, a valve ring, a round block, a round ring, a thin rod and a slider. The disc slides downward in the valve body, drives the round block to move downward, drives the round ring to move downward, and in the process of moving downward, the round block enters the valve ring and blocks the valve ring, so that the liquid in the valve body does not flow out of the valve ring. In the process of moving downward, the round ring enters the circular groove of the valve ring and blocks the liquid that penetrates from the edge of the valve ring, preventing the liquid from penetrating from the edge of the valve ring and causing the pneumatic valve to have a poor interception effect. The slider moves downward in the U-shaped groove plate, and the circular protrusion of the slider moves downward in the slide groove of the U-shaped groove plate. Under the action of friction, the vibration of the valve stem when moving downward is reduced, preventing the valve stem from vigorous vibration and causing the pneumatic valve to not be completely closed.

[0017] (2) The present invention sets a limit device so that the straight ring block, sliding column, spring, rubber pad, cross plate and chamfered block cooperate with the short plate. When the rubber pad moves downward, the rubber pad contacts the valve cover. Under the action of the extrusion force, the spring on the sliding column begins to shrink. Under the elastic force of the spring, the disc will not hit the valve ring, thereby preventing the disc from hitting the valve ring and causing damage to the valve ring. In addition, when the chamfered block moves downward, the chamfer of the chamfered block scrapes off the rust blocks in the U-shaped groove plate, and the short plate scrapes off the rust blocks in the slide groove, so that the rust blocks in the U-shaped groove plate will not block the valve stem from moving downward, thereby preventing the rust blocks in the U-shaped groove plate from causing poor interception effect of the pneumatic valve.

[0018] (3) The present invention arranges the oil pressure device so that the circular frame, J-shaped rod, arc plate, sponge block, connecting ring and straight plate cooperate with the square plate. When the sponge block moves downward, the lower side of the sponge block contacts the valve cover. Under the action of the extrusion force, the sponge block squeezes out the lubricating oil onto the surface of the valve stem, so that the surface of the valve stem is coated with lubricating oil, thereby preventing the pneumatic valve from closing unsmoothly due to the inconvenience of oiling the surface of the valve stem. Moreover, when the sponge block is squeezed, the straight plate abuts against the edge of the connecting ring, so that the J-shaped rod in the connecting ring will not be deformed and deviated, thereby preventing the J-shaped rod from deforming and deviating and causing poor oiling effect of the sponge block. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the present invention as a whole; Figure 2 It is a cross-sectional schematic diagram of the valve body of the present invention; Figure 3 For the present invention Figure 2 A local enlarged schematic diagram of the middle A; Figure 4 is a cross-sectional schematic diagram of the limiting device of the present invention; Figure 5 For the present invention Figure 4 A partial enlarged schematic diagram of point B in the middle; Figure 6 It is a schematic diagram of the oil pressing device of the present invention; Figure 7 For the present invention Figure 6 A partial enlarged schematic diagram of point C in the middle.

[0020] In the figure: 1. valve body; 2. nozzle; 11. pneumatic component; 111. valve cover; 112. leak-proof ring; 113. U-shaped frame; 114. cylinder; 115. valve stem; 116. disc; 117. valve ring; 118. round block; 119. round ring; 12. anti-shake component; 121. thin rod; 122. slider; 123. U-shaped groove plate; 3. limit device; 31. straight ring block; 32. sliding column; 33. spring; 34. rubber pad; 35. horizontal plate; 36. chamfered block; 37. short plate; 4. oil pressure device; 41. circular frame; 42. J-shaped rod; 43. arc plate; 44. sponge block; 45. connecting ring; 46. straight plate; 47. square plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figure 1-Figure 7 One embodiment of the present invention is: an anti-permeation pneumatic valve, comprising a valve body 1, an outlet is opened at the top right side of the valve body 1, a nozzle 2 is fixedly installed on the right side of the outlet of the valve body 1, the outlet of the valve body 1 is fixedly connected to the left side of the nozzle 2 by bolts, an inlet is opened at the bottom left side of the valve body 1, a round opening is opened on the top surface of the valve body 1, and a plurality of bolt holes are opened on the left side of the inlet of the valve body 1; The round mouth top surface of the valve body 1 is provided with a pneumatic assembly 11, and the pneumatic assembly 11 includes a valve cover 111, and the valve cover 111 is fixedly mounted on the round mouth top surface of the valve body 1, and the round mouth top surface of the valve body 1 is fixedly connected with the bottom surface of the valve cover 111 by bolts, and a round hole is opened in the middle of the top surface of the valve cover 111, and a leak-proof ring 112 is fixedly mounted on the inner wall of the round hole of the valve cover 111, and a U-shaped frame 113 is fixedly mounted on the top surface of the valve cover 111, and a cylinder 114 is fixedly mounted on the top end of the U-shaped frame 113, and the bottom surface of the cylinder 114 A bracket is provided, the outer wall of the bracket is fixedly connected to the inner wall of the U-shaped frame 113, the bottom surface of the bracket is provided with a round mouth, the telescopic end of the cylinder 114 is in sliding contact with the inner wall of the round mouth of the bracket, a valve stem 115 is fixed to the bottom surface of the telescopic end of the cylinder 114, the outer wall of the valve stem 115 is in sliding connection with the inner wall of the leak-proof ring 112, a disc 116 is fixed to the bottom surface of the valve stem 115, the outer wall of the disc 116 is in sliding contact with the inner wall of the valve body 1, a valve ring 117 is fixed to the top of the inner part of the valve body 1, and the valve ring 117 Located below the outlet of the valve body 1, a circular groove is provided on the top surface of the valve ring 117, a round block 118 is fixed in the middle of the bottom surface of the disc 116, a round ring 119 is fixed on the bottom surface of the disc 116, the inner wall of the valve ring 117 is on the motion track of the outer wall of the round block 118, the inner wall of the circular groove of the valve ring 117 is on the motion track of the outer wall of the round ring 119, the disc 116 slides downward in the valve body 1, the disc 116 drives the round block 118 to move downward, and the disc 116 drives the round ring 119 Move downward, the round block 118 enters the valve ring 117 during the downward movement, and the round block 118 blocks the valve ring 117, so that the liquid in the valve body 1 will not flow out of the valve ring 117. The ring 119 enters the circular groove of the valve ring 117 during the downward movement, and the ring 119 blocks the liquid that penetrates from the edge of the valve ring 117, so as to avoid the poor interception effect of the pneumatic valve caused by the liquid penetrating from the edge of the valve ring 117 when the pneumatic valve is closed; The top of the outer wall of the valve stem 115 is provided with an anti-shake component 12, which includes a thin rod 121, which penetrates and is fixed to the top of the outer wall of the valve stem 115, and sliders 122 are fixed at both ends of the thin rod 121, and the front and back sides of the two sliders 122 are provided with round convex heads, and the left and right sides of the inner wall of the U-shaped frame 113 are fixed with U-shaped groove plates 123, and the front and back sides of the two U-shaped groove plates 123 are provided with sliding grooves, and the inner walls of the two U-shaped groove plates 123 and the two sliders are connected. The outer wall of 122 is slidably connected, and the inner walls of the slide grooves of the two U-shaped groove plates 123 are in sliding contact with the outer walls of the circular convex heads of the two sliders 122. The slider 122 moves downward in the U-shaped groove plate 123, and the circular convex heads of the slider 122 move downward in the slide grooves of the U-shaped groove plate 123. Under the action of friction, the shaking of the valve stem 115 when moving downward is reduced, thereby avoiding severe shaking of the valve stem 115 when the pneumatic valve is closed, resulting in incomplete closing of the pneumatic valve.

[0023] When in use, liquid enters from the inlet of the valve body 1, and the outlet of the valve body 1 transports the liquid to the nozzle 2, and the nozzle 2 sprays the liquid. When the valve is closed, a small amount of liquid will leak out from the edge of the valve ring 117. When the valve is closed, the valve body 1 supports the valve cover 111, and the valve cover 111 supports the U-shaped frame 113. The bracket supports the bottom of the cylinder 114. The operator starts the cylinder 114 on the U-shaped frame 113, and the telescopic end of the cylinder 114 begins to move downward. The telescopic end of the cylinder 114 moves downward in the round mouth of the bracket, and the telescopic end of the cylinder 114 drives the valve stem 115 to move downward. The valve stem 115 slides downward in the leak-proof ring 112, and the valve stem 115 drives the disc 116 to slide downward. The disc 1 16 slides downward in the valve body 1, the disc 116 drives the block 118 to move downward, the disc 116 drives the ring 119 to move downward, the block 118 enters the valve ring 117 during the downward movement, the block 118 blocks the valve ring 117, so that the liquid in the valve body 1 will not flow out of the valve ring 117, and at the same time, the ring 119 enters the circular groove of the valve ring 117 during the downward movement, the ring 119 blocks the liquid that penetrates from the edge of the valve ring 117, and prevents the edge of the valve ring 117 from seeping out liquid when the equipment is in use, thereby avoiding the problem of poor interception effect of the pneumatic valve caused by the edge of the valve ring 117 seeping out liquid when the pneumatic valve is closed.

[0024] While the telescopic end of the cylinder 114 drives the valve stem 115 to move downward, the valve stem 115 drives the thin rod 121 to move downward, and the thin rod 121 drives the slider 122 to move downward. The slider 122 moves downward in the U-shaped groove plate 123. At the same time, the round convex head of the slider 122 moves downward in the slide groove of the U-shaped groove plate 123. Under the action of friction, the shaking of the valve stem 115 when moving downward is reduced, and the valve stem 115 is prevented from shaking violently when moving downward when the equipment is in use, thereby avoiding the problem of incomplete closing of the pneumatic valve caused by the valve stem 115 shaking violently when closing the valve.

[0025] See also Figure 1-Figure 7On the basis of the above embodiment, another embodiment of the present invention further includes a limit device 3 and an oil pressure device 4, wherein the limit devices 3 are arranged on both sides of the outer wall of the thin rod 121, and the limit device 3 includes two straight ring blocks 31, two sliding columns 32, two springs 33 and two rubber pads 34, the two straight ring blocks 31 are respectively fixed on both sides of the outer wall of the thin rod 121, the bottom surfaces of the two straight ring blocks 31 are provided with circular holes, the two sliding columns 32 are respectively slidably mounted on the inner walls of the circular holes of the two straight ring blocks 31, the two springs 33 are respectively fixed on the top surfaces of the two sliding columns 32, and the ends of the two springs 33 away from the two sliding columns 32 are respectively connected to the circular holes of the two straight ring blocks 31 The top of the interior is fixedly connected, and the two rubber pads 34 are respectively fixed on the bottom surfaces of the two sliding columns 32. The two straight ring blocks 31 are located on the left and right sides of the valve stem 115. The top surface of the valve cover 111 is on the movement trajectory of the bottom surfaces of the two rubber pads 34. When the rubber pads 34 move downward, the rubber pads 34 contact the valve cover 111. Under the action of the extrusion force, the sliding column 32 slides upward in the circular hole of the straight ring block 31, and the spring 33 on the sliding column 32 begins to shrink. Under the elastic force of the spring 33, the disc 116 will not hit the valve ring 117, so as to avoid the disc 116 hitting the valve ring 117 and causing damage to the valve ring 117 when the pneumatic valve is closed.

[0026] The limiting device 3 also includes two transverse plates 35, two chamfered blocks 36 and four short plates 37. The two transverse plates 35 are respectively fixed to the top of the side of the two straight ring blocks 31 away from each other. The two chamfered blocks 36 are respectively fixed to the ends of the two transverse plates 35 away from the two straight ring blocks 31. The outer walls of the two chamfered blocks 36 are in sliding contact with the inner wall of the U-shaped groove plate 123. The four short plates 37 are respectively fixed in pairs to the front and back of the two chamfered blocks 36. The outer walls of the four short plates 37 are in sliding contact with the inner wall of the two U-shaped groove plates 123. The inner wall of the slide groove of the plate 123 is in sliding contact, and the two chamfered blocks 36 are provided with a chamfer on the side away from each other. When the chamfered block 36 moves downward, the chamfer of the chamfered block 36 scrapes off the rust in the U-shaped groove plate 123. When the short plate 37 moves downward, the short plate 37 scrapes off the rust in the slide groove, so that the rust in the U-shaped groove plate 123 will not block the valve stem 115 from moving downward, thereby avoiding the pneumatic valve from having a poor shutoff effect due to the rust in the U-shaped groove plate 123 when the pneumatic valve is closed.

[0027] The bottom surface of the limit device 3 is provided with an oil pressure device 4, which includes a circular frame 41, two J-shaped rods 42, two arc plates 43 and two sponge blocks 44. The circular frame 41 is fixed to the bottom surface of the two horizontal plates 35, the two J-shaped rods 42 are embedded in the front and rear of the inner wall of the circular frame 41, the two arc plates 43 are respectively fixed to the ends of the two J-shaped rods 42 away from the circular frame 41, and the two sponge blocks 44 are respectively fixed to the bottom of the side of the two arc plates 43 close to each other. The side of the two sponge blocks 44 close to each other is connected to the valve stem 115. The outer wall is in sliding contact, and the two J-shaped rods 42 are respectively located at the top of one side where the two straight ring blocks 31 are close to each other. The top surface of the valve cover 111 is on the movement trajectory of the bottom surfaces of the two sponge blocks 44. When the sponge block 44 moves downward, the bottom of the sponge block 44 contacts the valve cover 111. Under the action of the extrusion force, the sponge block 44 squeezes out the lubricating oil onto the surface of the valve stem 115, so that the surface of the valve stem 115 is coated with lubricating oil, thereby avoiding the inconvenience of oiling the surface of the valve stem 115 when the pneumatic valve is closed, causing the pneumatic valve to close unsmoothly.

[0028] The oil pressure device 4 also includes two connecting rings 45, two straight plates 46 and two square plates 47. The two connecting rings 45 are respectively fixed to the bottom of the outer wall of the two J-shaped rods 42, the two straight plates 46 are respectively fixed to the side of the two connecting rings 45 away from each other, and the two square plates 47 are respectively fixed to one end of the two straight plates 46 away from the two connecting rings 45. The side of the two square plates 47 away from each other is fixedly connected to the side of the two straight ring blocks 31 close to each other. The two square plates 47 are located at the bottom of the outer wall of the two straight ring blocks 31. When the sponge block 44 is squeezed, the straight plate 46 is against the edge of the connecting ring 45, so that the J-shaped rod 42 in the connecting ring 45 will not be deformed and offset, so as to avoid the poor oiling effect of the sponge block 44 caused by the deformation and offset of the J-shaped rod 42 when the pneumatic valve is closed.

[0029] When the valve stem 115 drives the thin rod 121 to move downward, the thin rod 121 drives the straight ring block 31 to move downward, the straight ring block 31 drives the sliding column 32 to move downward, the sliding column 32 drives the spring 33 to move downward, and the sliding column 32 drives the rubber pad 34 to move downward. During the downward movement of the rubber pad 34, the rubber pad 34 contacts the valve cover 111. Under the action of the extrusion force, the sliding column 32 slides upward in the circular hole of the straight ring block 31, and the spring 33 on the sliding column 32 begins to shrink. Under the elastic force of the spring 33, the disc 116 will not hit the valve ring 117, preventing the disc 116 from hitting the valve ring 117 when the equipment is in use, thereby avoiding the problem of the disc 116 hitting the valve ring 117 and causing damage to the valve ring 117 when the pneumatic valve is closed.

[0030] When the thin rod 121 drives the straight ring block 31 to move downward, the straight ring block 31 drives the cross plate 35 to move downward, the cross plate 35 drives the chamfered block 36 to move downward, and the chamfered block 36 drives the short plate 37 to move downward. In the process of the chamfered block 36 moving downward, the chamfer of the chamfered block 36 scrapes off the rust blocks in the U-shaped groove plate 123, and in the process of the short plate 37 moving downward, the short plate 37 scrapes off the rust blocks in the slide groove, so that the rust blocks in the U-shaped groove plate 123 will not block the valve stem 115 from moving downward, preventing rust blocks in the U-shaped groove plate 123 when the equipment is in use, thereby avoiding the problem of poor interception effect of the pneumatic valve caused by rust blocks in the U-shaped groove plate 123 when the pneumatic valve is closed.

[0031] While the straight ring block 31 drives the cross plate 35 to move downward, the cross plate 35 drives the circular frame 41 to move downward, the circular frame 41 drives the J-shaped rod 42 to move downward, the J-shaped rod 42 drives the arc plate 43 to move downward, and the arc plate 43 drives the sponge block 44 to move downward. In the process of the sponge block 44 moving downward, the bottom of the sponge block 44 contacts the valve cover 111. Under the action of the extrusion force, the sponge block 44 squeezes out lubricating oil onto the surface of the valve stem 115, so that the surface of the valve stem 115 is coated with lubricating oil, thereby preventing the surface of the valve stem 115 from being inconvenient to be oiled when the equipment is in use, thereby avoiding the problem of the pneumatic valve not closing smoothly due to the inconvenience of oiling the surface of the valve stem 115 when the pneumatic valve is closed.

[0032] When the circular frame 41 drives the J-shaped rod 42 to move downward, the J-shaped rod 42 drives the connecting ring 45 to move downward, the connecting ring 45 drives the straight plate 46 to move downward, and the straight plate 46 drives the square plate 47 to move downward. When the sponge block 44 is squeezed, the straight plate 46 abuts against the edge of the connecting ring 45, so that the J-shaped rod 42 in the connecting ring 45 will not be deformed or offset, thereby preventing the J-shaped rod 42 from deforming and offsetting when the equipment is in use, thereby avoiding the problem of poor oiling effect of the sponge block 44 caused by the deformation and offset of the J-shaped rod 42 when the pneumatic valve is closed.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-permeation pneumatic valve, comprising a valve body (1), wherein an outlet is provided at the top right side of the valve body (1), and a nozzle (2) is fixedly mounted on the right side of the outlet of the valve body (1), characterized in that: The left bottom of the valve body (1) is provided with an inlet, the top surface of the valve body (1) is provided with a circular opening, and the top surface of the circular opening of the valve body (1) is provided with a pneumatic component (11); The pneumatic component (11) comprises a valve cover (111), the valve cover (111) being fixedly mounted on the top surface of the circular opening of the valve body (1), a circular hole being opened in the middle of the top surface of the valve cover (111), a leakproof ring (112) being fixedly mounted on the inner wall of the circular hole of the valve cover (111), a U-shaped frame (113) being fixedly mounted on the top surface of the valve cover (111), a cylinder (114) being fixedly mounted on the top end of the U-shaped frame (113), a valve stem (115) being fixedly mounted on the bottom surface of the telescopic end of the cylinder (114), an outer wall of the valve stem (115) being slidably connected to the inner wall of the leakproof ring (112), a disc (116) being fixedly mounted on the bottom surface of the valve stem (115), and the valve stem (115) being fixedly mounted on the inner wall of the leakproof ring (112). The outer wall of the disk (116) is in sliding contact with the inner wall of the valve body (1); a valve ring (117) is fixed to the inner top of the valve body (1); the valve ring (117) is located below the outlet of the valve body (1); a circular groove is provided on the top surface of the valve ring (117); a round block (118) is fixed in the middle of the bottom surface of the disk (116); a circular ring (119) is fixed to the bottom surface of the disk (116); the inner wall of the valve ring (117) is on the movement trajectory of the outer wall of the round block (118); the inner wall of the circular groove of the valve ring (117) is on the movement trajectory of the outer wall of the circular ring (119); and an anti-shake component (12) is provided on the top of the outer wall of the valve stem (115).

2. The anti-permeation pneumatic valve according to claim 1, characterized in that: The anti-shake component (12) comprises a thin rod (121), the thin rod (121) passes through and is fixed to the top of the outer wall of the valve stem (115), sliders (122) are fixed to both ends of the thin rod (121), the front and back sides of the two sliders (122) are provided with circular convex heads, U-shaped groove plates (123) are fixed to the left and right sides of the inner wall of the U-shaped frame (113), the front and back sides of the two U-shaped groove plates (123) are provided with sliding grooves, the inner walls of the two U-shaped groove plates (123) are slidably connected to the outer walls of the two sliders (122), and the inner walls of the sliding grooves of the two U-shaped groove plates (123) are in sliding contact with the outer walls of the circular convex heads of the two sliders (122); Limiting devices (3) are provided on both sides of the outer wall of the thin rod (121), and an oil pressing device (4) is provided on the bottom surface of the limiting device (3).

3. The anti-permeation pneumatic valve according to claim 2, characterized in that: The outlet of the valve body (1) is fixedly connected to the left side of the nozzle (2) by bolts, the top surface of the circular opening of the valve body (1) is fixedly connected to the bottom surface of the valve cover (111) by bolts, and a plurality of bolt holes are provided on the left side of the inlet of the valve body (1).

4. The anti-permeation pneumatic valve according to claim 3, characterized in that: A bracket is provided on the bottom surface of the cylinder (114); the outer wall of the bracket is fixedly connected to the inner wall of the U-shaped frame (113); a round opening is provided on the bottom surface of the bracket; the telescopic end of the cylinder (114) is in sliding contact with the inner wall of the round opening of the bracket.

5. The anti-permeation pneumatic valve according to claim 4, characterized in that: The limiting device (3) comprises two straight ring blocks (31), two sliding columns (32), two springs (33) and two rubber pads (34). The two straight ring blocks (31) are respectively fixed on the two sides of the outer wall of the thin rod (121); the bottom surfaces of the two straight ring blocks (31) are provided with round holes; the two sliding columns (32) are respectively slidably mounted on the inner walls of the round holes of the two straight ring blocks (31); the two springs (33) are respectively fixed on the top surfaces of the two sliding columns (32); the ends of the two springs (33) away from the two sliding columns (32) are respectively fixedly connected to the top ends of the round holes of the two straight ring blocks (31); and the two rubber pads (34) are respectively fixed on the bottom surfaces of the two sliding columns (32).

6. The anti-permeation pneumatic valve according to claim 5, characterized in that: The limiting device (3) further comprises two transverse plates (35), two chamfered blocks (36) and four short plates (37); the two transverse plates (35) are respectively fixed to the top of the side of the two straight ring blocks (31) away from each other; the two chamfered blocks (36) are respectively fixed to the ends of the two transverse plates (35) away from the two straight ring blocks (31); the outer walls of the two chamfered blocks (36) are in sliding contact with the inner wall of the U-shaped groove plate (123); the four short plates (37) are respectively fixed in groups of two to the front and back sides of the two chamfered blocks (36); and the outer walls of the four short plates (37) are in sliding contact with the inner walls of the slide grooves of the two U-shaped groove plates (123).

7. The anti-permeation pneumatic valve according to claim 6, characterized in that: The two straight ring blocks (31) are located on the left and right sides of the valve stem (115), the top surface of the valve cover (111) is located on the movement track of the bottom surfaces of the two rubber pads (34), and the two chamfered blocks (36) are provided with chamfers on the sides away from each other.

8. The anti-permeation pneumatic valve according to claim 7, characterized in that: The oil pressure device (4) comprises a circular frame (41), two J-shaped rods (42), two arc plates (43) and two sponge blocks (44). The circular frame (41) is fixed to the bottom surfaces of the two transverse plates (35). The two J-shaped rods (42) are embedded in the front and rear of the inner wall of the circular frame (41). The two arc plates (43) are respectively fixed to the ends of the two J-shaped rods (42) away from the circular frame (41). The two sponge blocks (44) are respectively fixed to the bottoms of the two arc plates (43) on the sides close to each other. The sides of the two sponge blocks (44) on the sides close to each other are in sliding contact with the outer wall of the valve stem (115).

9. The anti-permeation pneumatic valve according to claim 8, characterized in that: The oil pressure device (4) further comprises two connecting rings (45), two straight plates (46) and two square plates (47). The two connecting rings (45) are respectively fixed to the bottom of the outer wall of the two J-shaped rods (42). The two straight plates (46) are respectively fixed to the sides of the two connecting rings (45) away from each other. The two square plates (47) are respectively fixed to one end of the two straight plates (46) away from the two connecting rings (45). The sides of the two square plates (47) away from each other are fixedly connected to the sides of the two straight ring blocks (31) close to each other.

10. The anti-permeation pneumatic valve according to claim 9, characterized in that: The two J-shaped rods (42) are respectively located at the top of one side of the two straight ring blocks (31) close to each other, the top surface of the valve cover (111) is located on the movement track of the bottom surfaces of the two sponge blocks (44), and the two square plates (47) are located at the bottom of the outer walls of the two straight ring blocks (31).

Images