Exhaust gate valve with anti-blocking function

Abstract

The invention discloses an exhaust gate valve with an anti-blocking function, and relates to the technical field of exhaust gate valves. Comprising a connecting flange, a valve body, a driving motor, an exhaust assembly, a valve plate assembly, an anti-seepage detection assembly and a driving gear, a brush plate shrunk between a rear valve plate and a front valve plate extends out through an eccentric ring on a front valve plate, under rotation of a cleaning gear ring, the brush plate is driven to clean dirt and impurities in the groove wall of an intercepting groove, and meanwhile, the cleaning gear ring is driven to rotate to drive the exhaust assembly to exhaust. The cleaning plate on the front valve plate is used for cleaning bristles of the brush plate, and finally the anti-blocking and self-cleaning purposes of the exhaust gate valve are achieved. Air on one side of the valve body assembly is exhausted through an exhaust head by means of the exhaust assembly, an iron core rod is driven to move by means of an exhaust floating ball, the change of the medium liquid level is converted into an electric signal capable of being monitored, the control system compares the electric signal with a preset value, and when the electric signal is at the maximum value, the valve plate assembly is automatically opened; therefore, the purposes of liquid level monitoring and automatic exhaust are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of exhaust gate valves, in particular to an exhaust gate valve with an anti-blocking function. Background Art

[0002] Gate valves have multiple functions such as cutting off fluid, regulating flow, and achieving diversion and confluence. Gate valves can fit tightly to the valve seat and effectively prevent fluid leakage, thereby ensuring the safety of the equipment connected to it. When the connected equipment has problems or needs maintenance, the rapid closure of the gate valve can prevent the fluid from continuing to flow, avoid potential accident risks, quickly cut off the source of danger, and protect the safety of personnel and equipment. The flexibility of gate valves makes them widely used in complex pipeline systems.

[0003] Although gate valves are very practical, they have a single effect and do not have exhaust performance. In addition, they may become clogged during use, especially at the joint between the valve plate and the valve body. Since the joint often has grooves, dirt and impurities are easily accumulated in these grooves. When there are too many dirt and impurities, leakage may occur at the closed part of the valve plate. At present, there is a lack of effective methods to detect leakage around the valve plate, and the blockage in the groove often needs to be cleaned manually, which is extremely inconvenient. Summary of the invention

[0004] The object of the present invention is to provide an exhaust gate valve with an anti-blocking function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an exhaust gate valve with an anti-blocking function, comprising a valve body, connecting flanges at both ends of the valve body, a driving motor installed at the top of the valve body, an output shaft of the driving motor passes through the valve body and is installed with a driving gear, the driving gear is rotatably installed in the valve body, a valve plate assembly is slidably installed in the valve body, the valve plate assembly is meshed with the driving gear for transmission, an exhaust assembly is installed in the valve body, an anti-seepage detection assembly is installed in the valve body, the anti-seepage detection assembly is located at the bottom of the valve plate assembly, and the exhaust assembly is located on one side of the valve plate assembly; an exhaust duct is provided on the valve body, an exhaust head is installed at one end of the exhaust duct, a sealing groove is provided in the valve body, a detection groove is provided in the valve body, an intercepting groove is provided in the valve body, the sealing groove is connected with the exhaust duct, the valve plate assembly is embedded in the intercepting groove, and an electric valve is provided at the bottom of the intercepting groove.

[0006] A control system is arranged in the valve body, and the control system is used to control the entire exhaust gate valve; a sealing component is arranged in the valve body, and the sealing component is used to seal various components in the valve body.

[0007] When the exhaust valve body needs to be closed, the control system turns on the drive motor, and the output shaft of the drive motor drives the drive gear to rotate, and the drive gear drives the sliding gear to rotate, and the sliding gear rotates and drives the valve stem to rotate. Since the valve stem is threadedly connected to the sliding gear and the valve stem cannot slide under the restriction of the front valve plate and the rear valve plate, the valve stem converts the rotation into sliding up and down in the valve body, and the valve stem drives the entire valve plate assembly to slide down until the valve plate assembly is engaged with the intercepting groove in the valve body, thereby realizing the cutoff of the flowing medium. When the gate needs to be opened, the control system controls the drive motor to rotate, so that the valve stem slides upward, driving the valve plate assembly to disengage from the intercepting groove, thereby realizing the effect of automatic opening and closing of the gate.

[0008] The valve plate assembly includes a front valve plate and a rear valve plate. The front valve plate and the rear valve plate are connected by a connecting piece. A valve stem is installed on the rear valve plate. The valve stem is provided with a thread. A sliding gear is threadedly installed on the valve stem. The sliding gear is meshed with a driving gear for transmission. The sliding gear is rotatably installed in the valve body. The valve stem is slidably installed in the valve body. A cleaning motor is installed in the rear valve plate. A cleaning gear is installed on the output shaft of the cleaning motor. A cleaning assembly is rotatably installed between the rear valve plate and the front valve plate. The cleaning assembly is meshed with the cleaning gear for transmission. The front valve plate and the rear valve plate are tightly fitted with the intercepting groove.

[0009] The cleaning assembly includes a cleaning gear ring, which is provided with gear teeth. The cleaning gear ring is meshed with the cleaning gear through the gear teeth for transmission. The cleaning gear ring is rotatably installed between the front valve plate and the rear valve plate. A plurality of sliding rods are slidably installed on the cleaning gear ring. A brush plate is installed at one end of the sliding rod, and bristles are provided on the brush plate. A transmission wheel is rotatably installed at the other end of the sliding rod, and a reset spring is installed between the sliding rod and the cleaning gear ring.

[0010] A cleaning plate is arranged on the front valve plate, brush teeth are arranged on the cleaning plate, the brush teeth are made of rigid material, and an eccentric ring is arranged on the front valve plate, and the eccentric ring is designed as an eccentric circular ring.

[0011] The control system opens the electric valve at the bottom of the intercepting groove and introduces cleaning liquid into the exhaust gate valve. The output shaft of the cleaning motor drives the cleaning gear to rotate, and the cleaning gear rotates and drives the cleaning gear ring to rotate. Under normal conditions, the transmission wheel is located at the upper end of the eccentric ring, the reset spring naturally extends, and makes the brush plate fit tightly with the cleaning gear ring, the brush plate shrinks between the rear valve plate and the front valve plate, and does not contact the intercepting groove, and the transmission wheel and the eccentric ring are not squeezed. As the cleaning gear ring rotates, the transmission wheel gradually turns to the bottom of the eccentric ring. Due to the eccentric device of the eccentric ring, the transmission wheel gradually squeezes the eccentric ring when it approaches the eccentric ring. After the transmission wheel is compressed, it drives the sliding rod to slide, and the sliding rod overcomes the elastic force of the reset spring and drives the brush plate to extend out of the side of the cleaning gear ring. The brush plate extends out and comes into contact with the intercepting groove, thereby cleaning the dirt in the intercepting groove. The dirt and impurities are brushed. When the driving wheel rotates from the lower end of the eccentric ring back to the upper end as the cleaning ring rotates, the driving wheel loses the extrusion force from the eccentric ring and is reset under the action of the elastic force of the reset spring. The driving wheel drives the brush plate to reset through the sliding rod. When the brush plate rotates to the cleaning plate following the cleaning tooth ring, the bristles on the brush plate and the brush teeth on the cleaning plate rub against each other, so that the impurities and dirt on the bristles and brush teeth fall off, and the fallen impurities and dirt fall into the grooves between the brush plates. With the rotation and the flushing of the cleaning liquid, they are discharged from the electric valve at the bottom of the intercepting groove, thereby realizing the brushing of the intercepting groove and completing the self-cleaning of the brush plate. After brushing, the control system controls the cleaning component to rotate and reset, and performs leakage detection. This cycle is repeated until the leakage detection is qualified, thereby achieving the purpose of preventing blockage.

[0012] The anti-seepage detection component includes a first rack, a second rack, a detection ball assembly and a transmission gear. The first rack is slidably installed in the valve body, a touch rod is installed at the top of the first rack, the touch rod is slidably installed in the valve body, a detection spring is installed at the bottom of the first rack, the transmission gear is rotatably installed in the valve body, the transmission gear is meshed with the first rack for transmission, the second rack is slidably installed in the valve body, the second rack is meshed with the transmission gear for transmission, a limit rod is installed at the top of the second rack, the limit rod is slidably connected to the valve body, a limit ring is installed at the top of the limit rod, the limit ring is slidably connected to the valve body, and the detection ball assembly is slidably installed in the valve body.

[0013] When the valve plate assembly is in a closed state, the detection spring is in a compressed state.

[0014] The detection ball assembly includes a detection shell, which is slidably connected to the valve body. A detection connecting rod is installed on the top of the detection shell, and a detection float is installed on the top of the detection connecting rod. The detection float is located in the detection groove. A diaphragm is installed in the detection shell, and piezoelectric elements are installed between the diaphragms. A detection contact is slidably installed on the detection shell.

[0015] The detection contact includes a piston plate, which is slidably installed in the detection shell. A force transmission plate is installed on the top of the piston plate. The force transmission plate passes through the top of the detection shell and is installed with a pressure contact. A sealing design is adopted between the detection shell and the piston plate, and a compressible medium is filled between the detection shell and the piston plate.

[0016] The diameter of the detection shell is consistent with the outer diameter of the limit ring, and the diameter of the pressure contact is smaller than the inner diameter of the limit ring.

[0017] When the valve plate assembly is in the open state, the detection spring naturally extends and drives the first rack to move upward, the feeler rod at the top of the first rack extends into the intercepting groove, the first rack drives the transmission gear to rotate, the transmission gear drives the second rack to slide downward, the second rack drives the limit ring to move downward through the limit rod, so that the limit ring contacts the top of the detection shell, because the diameter of the detection shell is consistent with the outer diameter of the limit ring, the detection shell cannot slide up and down under the downward pressure of the limit ring, when the medium flows through, the detection float cannot drive the detection ball assembly to rise through buoyancy; when the valve plate assembly is closed, the bottom end of the rear valve plate presses the feeler rod downward, the feeler rod is compressed and drives the first rack to overcome the elastic force of the detection spring and slide down, the first rack drives the transmission gear to rotate in the opposite direction, the transmission gear drives the second rack to move upward, the second rack drives the limit ring to move upward through the limit rod, so that the detection ball assembly loses the restriction of the limit ring and can slide upward.

[0018] When the exhaust gate valve is used for a long time, dirt and impurities accumulate in the interception groove, making it impossible for the valve plate assembly to fit tightly with the interception groove, resulting in leakage. Even if the valve plate assembly is in a sealed state, the medium will flow away from the gap between the valve plate assembly and the interception groove. When it flows through the detection groove, it will enter the detection groove. The detection float in the detection groove is lifted by the buoyancy. When the leakage exceeds the normal value, the detection float drives the entire detection ball assembly to rise under the action of buoyancy. After the detection ball assembly rises to a certain height, the pressure contact on the detection contact passes through the annular hole of the limit ring and is in contact with the valve The detection float continues to rise and drives the detection housing to rise through the detection connecting rod. The pressure contact is blocked and cannot move. At this time, the detection housing slides relative to the detection contact under the upward pulling force of the detection float, so that the compressible medium in the detection housing is compressed by the piston plate. The pressure in the detection housing increases, so that the diaphragm at the bottom of the detection housing is compressed. The diaphragm squeezes the piezoelectric element, and the piezoelectric element is compressed and generates an electric charge. The electric charge is transmitted to the control system through the wire. After receiving the electrical signal, the control system starts the cleaning motor.

[0019] The exhaust assembly includes an induction coil and an iron core rod. The induction coil is installed in the valve body. The iron core rod is slidably installed in the valve body. A limit head is installed on the top of the iron core rod. The diameter of the limit head is larger than the diameter of the iron core rod. The limit head is used to prevent the iron core rod from falling off the valve body. An exhaust float is installed at the other end of the iron core rod. The exhaust float is located in the sealing groove. The inner diameter of the sealing groove is larger than the inner diameter of the exhaust ball.

[0020] When it is necessary to exhaust the medium flowing through, the control system first controls the valve plate assembly to enter the closed state. When the medium flows into the exhaust gate valve, it will be blocked by the front valve plate. As the medium gradually enters, the medium liquid level on the side of the front valve plate gradually rises. At this time, under the buoyancy of the medium, the exhaust float gradually rises with the liquid level, and the air in the valve body is squeezed into the blocking groove by the medium. The air enters the exhaust duct from the gap between the blocking groove and the exhaust float, and then is discharged from the exhaust head through the exhaust duct. The exhaust float drives the iron core rod to rise. When the iron core rod passes through the induction coil, an induced electromotive force is generated. The iron core rod passes through the induction coil. The longer the length of the induction coil, the greater the induced electromotive force. The control system analyzes the length of the core rod entering the induction coil through the size of the induced electromotive force, and thus analyzes the height of the medium liquid level. When the air is completely exhausted, the exhaust float just blocks the exhaust duct to prevent the exhaust duct medium from leaking out through the exhaust duct. At the same time, the induced electromotive force is also at its maximum value. The control system automatically opens the valve plate assembly by comparing it with the preset value when the induced electromotive force is at its maximum value. At this time, the gas-free medium flows out of the exhaust gate valve, thereby achieving the purpose of liquid level monitoring and automatic exhaust.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. When dirt and impurities accumulate in the intercepting groove, making it impossible for the valve plate assembly to fit tightly with the intercepting groove, resulting in leakage, the detection ball assembly is used to detect the leakage. The buoyancy of the leakage medium on the detection float is converted into the pressure exerted on the piezoelectric element in the diaphragm, and then the pressure is converted into an electrical signal that can be monitored. After receiving the electrical signal, the control system performs self-cleaning, thereby realizing automatic detection of leakage.

[0022] 2. Use the eccentric ring on the front valve plate to extend the brush plate contracted between the rear valve plate and the front valve plate. Under the rotation of the cleaning gear ring, the brush plate is driven to clean the dirt and impurities in the wall of the intercepting groove. At the same time, the cleaning plate on the front valve plate is used to clean the bristles of the brush plate, ultimately achieving the purpose of anti-blocking and self-cleaning of the exhaust gate valve.

[0023] 3. Use the exhaust assembly to discharge the air on one side of the valve body assembly through the exhaust head, and use the exhaust float to drive the core rod to move, converting the change of the medium liquid level into an electrical signal that can be monitored. The control system automatically opens the valve plate assembly when the electrical signal is at the maximum value by comparing it with the preset value, thereby achieving the purpose of liquid level monitoring and automatic exhaust.

[0024] 4. Use the limit ring to constrain the detection ball assembly in the open state. When the medium flows through, the detection float cannot drive the detection ball assembly to rise through buoyancy, and the detection ball assembly is locked in the detection groove without affecting the flow of the medium; then the rear valve plate drives the displacement of the touch rod, and finally drives the displacement of the limit ring, disconnecting the constraint on the detection ball assembly, thereby realizing the opening and locking of the detection ball assembly.

[0025] 5. Use the driving motor to drive the driving gear to rotate, and then use the driving gear to drive the sliding gear to rotate. The sliding gear drives the control valve plate assembly to slide up and down, thereby realizing the automatic opening and closing of the entire exhaust gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall stereogram of the exhaust gate valve of the present invention; Figure 2 is a cross-sectional view of the exhaust gate valve of the present invention; Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A area; Figure 4 For the present invention Figure 2 A partial enlarged view of the middle B area; Figure 5 is a three-dimensional diagram of the valve plate assembly of the present invention; Figure 6 It is a front view of the cleaning assembly and the front valve plate of the present invention; Figure 7 is a three-dimensional diagram of the cleaning assembly of the present invention; Figure 8 It is a three-dimensional diagram of the anti-seepage detection assembly of the present invention; Fig. 9 A three-dimensional diagram of a detection ball assembly of the present invention; Fig.10 It is a three-dimensional diagram of the exhaust assembly of the present invention.

[0027] In the figure: 1, connecting flange; 2, valve body; 3, driving motor; 4, exhaust assembly; 5, valve plate assembly; 6, anti-seepage detection assembly; 7, driving gear; 61, detection spring; 62, first rack; 63, touch rod; 64, second rack; 65, transmission gear; 66, limit rod; 67, detection ball assembly; 68, limit ring; 41, exhaust float; 42, iron core rod; 43, limit head; 44, induction coil; 51, rear valve plate; 52, valve stem; 53, sliding gear; 54, front valve plate; 55, cleaning motor; 56, cleaning Washing gear; 57, cleaning assembly; 541, cleaning plate; 542, eccentric ring; 571, cleaning gear ring; 572, brush plate; 573, transmission wheel; 574, reset spring; 575, sliding rod; 671, detection float; 672, detection connecting rod; 673, detection housing; 674, diaphragm; 675, piezoelectric element; 676, detection contact; 6761, pressure contact; 6762, force transmission plate; 6763, piston plate; 21, exhaust head; 22, exhaust duct; 23, detection groove; 24, blocking groove; 25, intercepting groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1-Figure 10 As shown, the present invention provides a technical solution of an exhaust gate valve with an anti-blocking function: it includes a valve body 2, connecting flanges 1 are provided at both ends of the valve body 2, a driving motor 3 is installed at the top of the valve body 2, the output shaft of the driving motor 3 passes through the valve body 2 and is installed with a driving gear 7, the driving gear 7 is rotatably installed in the valve body 2, a valve plate assembly 5 is slidably installed in the valve body 2, the valve plate assembly 5 is meshed with the driving gear 7 for transmission, an exhaust assembly 4 is installed in the valve body 2, an anti-seepage detection assembly 6 is installed in the valve body 2, the anti-seepage detection assembly 6 is located at the bottom of the valve plate assembly 5, and the exhaust assembly 4 is located on one side of the valve plate assembly 5; an exhaust duct 22 is provided on the valve body 2, an exhaust head 21 is installed at one end of the exhaust duct 22, a blocking groove 24 is provided in the valve body 2, a detection groove 23 is provided in the valve body 2, a intercepting groove 25 is provided in the valve body 2, the blocking groove 24 is communicated with the exhaust duct 22, the valve plate assembly 5 is embedded in the intercepting groove 25, and an electric valve is provided at the bottom of the intercepting groove 25.

[0030] A control system is provided in the valve body 2 , and the control system is used to control the entire exhaust gate valve; a sealing component is provided in the valve body 2 , and the sealing component is used to seal various components in the valve body 2 .

[0031] The exhaust assembly 4 includes an induction coil 44 and an iron core rod 42. The induction coil 44 is installed in the valve body 2. The iron core rod 42 is slidably installed in the valve body 2. A limit head 43 is installed on the top of the iron core rod 42. The diameter of the limit head 43 is larger than the diameter of the iron core rod 42. The limit head 43 is used to prevent the iron core rod 42 from falling off the valve body 2. An exhaust float 41 is installed at the other end of the iron core rod 42. The exhaust float 41 is located in the sealing groove 24. The inner diameter of the sealing groove 24 is larger than the inner diameter of the exhaust ball.

[0032] The anti-seepage detection assembly 6 includes a first rack 62, a second rack 64, a detection ball assembly 67 and a transmission gear 65. The first rack 62 is slidably mounted in the valve body 2. A touch rod 63 is mounted on the top of the first rack 62. The touch rod 63 is slidably mounted in the valve body 2. A detection spring 61 is mounted on the bottom of the first rack 62. The transmission gear 65 is rotatably mounted in the valve body 2. The transmission gear 65 is meshed with the first rack 62 for transmission. The second rack 64 is slidably mounted in the valve body 2. The second rack 64 is meshed with the transmission gear 65 for transmission. A limit rod 66 is mounted on the top of the second rack 64. The limit rod 66 is slidably connected to the valve body 2. A limit ring 68 is mounted on the top of the limit rod 66. The limit ring 68 is slidably connected to the valve body 2. The detection ball assembly 67 is slidably mounted in the valve body 2. When the valve plate assembly 5 is in a closed state, the detection spring 61 is in a compressed state.

[0033] The detection ball assembly 67 includes a detection shell 673, which is slidably connected to the valve body 2. A detection connecting rod 672 is installed on the top of the detection shell 673, and a detection float 671 is installed on the top of the detection connecting rod 672. The detection float 671 is located in the detection groove 23. A diaphragm 674 is installed in the detection shell 673, and a piezoelectric element 675 is installed between the diaphragms 674. A detection contact 676 is slidably installed on the detection shell 673.

[0034] The detection contact 676 includes a piston plate 6763, which is slidably installed in the detection housing 673. A force transmission plate 6762 is installed on the top of the piston plate 6763. The force transmission plate 6762 passes through the top of the detection housing 673 and is installed with a pressure contact 6761. A sealing design is adopted between the detection housing 673 and the piston plate 6763. A compressible medium is filled between the detection housing 673 and the piston plate 6763. The diameter of the detection housing 673 is consistent with the outer diameter of the limit ring 68, and the diameter of the pressure contact 6761 is smaller than the inner diameter of the limit ring 68.

[0035] The valve plate assembly 5 includes a front valve plate 54 and a rear valve plate 51, the front valve plate 54 is connected to the rear valve plate 51 by a connecting piece, a valve stem 52 is installed on the rear valve plate 51, the valve stem 52 is provided with a thread, a sliding gear 53 is threadedly installed on the valve stem 52, the sliding gear 53 is meshed with the driving gear 7 for transmission, the sliding gear 53 is rotatably installed in the valve body 2, the valve stem 52 is slidably installed in the valve body 2, a cleaning motor 55 is installed in the rear valve plate 51, and a cleaning gear 56 is installed on the output shaft of the cleaning motor 55, a cleaning assembly 57 is rotatably installed between the rear valve plate 51 and the front valve plate 54, the cleaning assembly 57 is meshed with the cleaning gear 56 for transmission, and the front valve plate 54 and the rear valve plate 51 are both tightly fitted with the intercepting groove 25.

[0036] The cleaning assembly 57 includes a cleaning gear ring 571, which is provided with gear teeth. The cleaning gear ring 571 is meshed with the cleaning gear 56 for transmission. The cleaning gear ring 571 is rotatably installed between the front valve plate 54 and the rear valve plate 51. A plurality of sliding rods 575 are slidably installed on the cleaning gear ring 571. A brush plate 572 is installed at one end of the sliding rod 575, and the brush plate 572 is provided with bristles. A transmission wheel 573 is rotatably installed at the other end of the sliding rod 575, and a reset spring 574 is installed between the sliding rod 575 and the cleaning gear ring 571.

[0037] A cleaning plate 541 is provided on the front valve plate 54 , and brush teeth are provided on the cleaning plate 541 . The brush teeth are made of a rigid material. An eccentric ring 542 is provided on the front valve plate 54 , and the eccentric ring 542 is designed as an eccentric circular ring.

[0038] The working principle of the present invention is as follows: when the exhaust valve body 2 needs to be closed, the control system turns on the drive motor 3, the output shaft of the drive motor 3 drives the drive gear 7 to rotate, the drive gear 7 drives the sliding gear 53 to rotate, the sliding gear 53 rotates and drives the valve stem 52 to rotate. Since the valve stem 52 is threadedly connected to the sliding gear 53, and the valve stem 52 cannot slide under the restriction of the front valve plate 54 and the rear valve plate 51, the valve stem 52 converts the rotation into sliding up and down in the valve body 2, and the valve stem 52 drives the entire valve plate assembly 5 to slide down until the valve plate assembly 5 is engaged with the intercepting groove 25 in the valve body 2, thereby realizing the cutoff of the flowing medium. When the gate needs to be opened, the control system controls the drive motor 3 to rotate, so that the valve stem 52 slides upward, drives the valve plate assembly 5 to disengage from the intercepting groove 25, and realizes the effect of automatic opening and closing of the gate.

[0039] When it is necessary to inlet and exhaust the medium, the control system first controls the valve plate assembly 5 to enter a closed state. When the medium flows into the exhaust gate valve, it will be blocked by the front valve plate 54. As the medium gradually enters, the medium liquid level on the side of the front valve plate 54 gradually rises. At this time, under the buoyancy of the medium, the exhaust float 41 gradually rises with the liquid level, and the air in the valve body 2 is squeezed into the blocking groove 24 by the medium. The air enters the exhaust duct 22 from the gap between the blocking groove 24 and the exhaust float 41, and then is discharged from the exhaust head 21 through the exhaust duct 22. The exhaust float 41 drives the iron core rod 42 to rise. When the iron core rod 42 passes through the induction coil 44, an induced electromotive force is generated. The longer the length of the core rod 42 passing through the induction coil 44, the greater the induced electromotive force. The control system analyzes the length of the core rod 42 entering the induction coil 44 through the size of the induced electromotive force, thereby analyzing the height of the medium liquid level. When the air is completely discharged, the exhaust float 41 just blocks the exhaust duct 22 to prevent the exhaust duct 22 from leaking out of the medium through the exhaust duct 22. At the same time, the induced electromotive force is also at its maximum value. The control system automatically opens the valve plate assembly 5 by comparing it with the preset value when the induced electromotive force is at its maximum value. At this time, the gas-free medium flows out from the exhaust gate valve, thereby achieving the purpose of liquid level monitoring and automatic exhaust.

[0040] When the valve plate assembly 5 is in the open state, the detection spring 61 naturally extends and drives the first rack 62 to move upward, the touch rod 63 at the top of the first rack 62 extends into the intercepting groove 25, the first rack 62 drives the transmission gear 65 to rotate, the transmission gear 65 drives the second rack 64 to slide downward, and the second rack 64 drives the limiting ring 68 to move downward through the limiting rod 66, so that the limiting ring 68 contacts with the top of the detection housing 673. Since the diameter of the detection housing 673 is consistent with the outer diameter of the limiting ring 68, the detection housing 673 is in contact with the top of the detection housing 673 under the downward pressure of the limiting ring 68. When the medium flows through, the detection float 671 cannot drive the detection ball assembly 67 to rise by buoyancy; when the valve plate assembly 5 is closed, the bottom end of the rear valve plate 51 presses the touch rod 63 downward, and the touch rod 63 is pressed and drives the first rack 62 to overcome the elastic force of the detection spring 61 and slide down, and the first rack 62 drives the transmission gear 65 to rotate in the opposite direction, and the transmission gear 65 drives the second rack 64 to move upward, and the second rack 64 drives the limit ring 68 to move upward through the limit rod 66, so that the detection ball assembly 67 loses the restriction of the limit ring 68 and can slide upward.

[0041] When the exhaust gate valve is used for a long time, dirt and impurities accumulate in the intercepting groove 25, making it impossible for the valve plate assembly 5 to fit tightly with the intercepting groove 25, resulting in leakage, even if the valve plate assembly 5 is in a sealed state, the medium will flow away from the gap between the valve plate assembly 5 and the intercepting groove 25, and when flowing through the detection groove 23, it will enter the detection groove 23, and the detection float 671 in the detection groove 23 will be lifted by the buoyancy. When the leakage exceeds the normal value, the detection float 671 drives the entire detection ball assembly 67 to rise under the action of buoyancy. After the detection ball assembly 67 rises to a certain height, the pressure contact 6761 on the detection contact 676 passes through the annular hole of the limit ring 68 and contacts the valve plate. As the detection float 671 is lifted, the pressure contact 6761 on the detection contact 676 passes through the annular hole of the limit ring 68 and contacts the valve plate. As the ball 671 rises further, the detection float 671 continues to rise and drives the detection housing 673 to rise through the detection connecting rod 672. The pressure contact 6761 is blocked and cannot move. At this time, the detection housing 673 slides relative to the detection contact 676 under the upward pulling force of the detection float 671, so that the compressible medium in the detection housing 673 is compressed by the piston plate 6763. The pressure in the detection housing 673 increases, so that the diaphragm 674 at the bottom of the detection housing 673 is compressed. The diaphragm 674 squeezes the piezoelectric element 675, and the piezoelectric element 675 is compressed and generates an electric charge. The electric charge is transmitted to the control system through the wire. After receiving the electrical signal, the control system starts the cleaning motor 55.

[0042] The control system opens the electric valve at the bottom of the intercepting groove 25 and introduces cleaning liquid into the exhaust gate valve. The output shaft of the cleaning motor 55 drives the cleaning gear 56 to rotate. The cleaning gear 56 rotates and drives the cleaning gear ring 571 to rotate. Under normal conditions, the transmission wheel 573 is located at the upper end of the eccentric ring 542, and the reset spring 574 naturally extends, and the brush plate 572 is closely fitted with the cleaning gear ring 571. The brush plate 572 shrinks between the rear valve plate and the front valve plate and does not contact the intercepting groove 25. The wheel 573 and the eccentric ring 542 do not produce any extrusion. As the cleaning toothed ring 571 rotates, the transmission wheel 573 gradually turns to the bottom of the eccentric ring 542. Due to the eccentricity of the eccentric ring 542, the transmission wheel 573 gradually squeezes the eccentric ring 542. After the transmission wheel 573 is pressed, it drives the sliding rod 575 to slide. The sliding rod 575 overcomes the elastic force of the return spring 574 and drives the brush plate 572 to extend out of the side of the cleaning toothed ring 571. The brush plate 572 extends out and produces a flow cutoff groove 25. The cleaning ring 571 rotates to the cleaning plate 541, and the brush bristles on the brush plate 572 contact the cleaning plate 541, and the brush bristles on the cleaning plate 541 contact the cleaning plate 541, and the brush bristles on the cleaning plate 541 contact the cleaning plate 541, and the brush bristles on the cleaning plate 541 contact the cleaning plate 541, and the brush bristles on the cleaning plate 541 contact the cleaning plate 541, and the brush bristles on the cleaning plate 541 contact the cleaning plate 541, and the brush bristles on the cleaning plate 541 contact the cleaning plate 541, and the brush bristles on the cleaning plate 541 contact the cleaning plate 541, and the brush bristles on the cleaning plate 541 contact the cleaning plate 541, and the brush bristles on the cleaning plate 541 contact the cleaning plate 541. The brush teeth rub against each other, causing impurities and dirt on the bristles and brush teeth to fall off, and the fallen impurities and dirt fall into the grooves between the brush plates 572. As the cleaning liquid rotates and flushes, it is discharged from the electric valve at the bottom of the intercepting groove 25, thereby brushing the grooves of the intercepting groove 25 and completing the self-cleaning of the brush plate 572. After brushing, the control system controls the cleaning component 57 to rotate and reset, and performs a leakage test. This cycle is repeated until the leakage test is qualified, thereby achieving the purpose of preventing blockage.

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An exhaust gate valve with anti-blocking function, characterized in that: The exhaust gate valve comprises a valve body (2), both ends of the valve body (2) are provided with connecting flanges (1), a driving motor (3) is installed at the top of the valve body (2), an output shaft of the driving motor (3) passes through the valve body (2) and is installed with a driving gear (7), the driving gear (7) is rotatably installed in the valve body (2), a valve plate assembly (5) is slidably installed in the valve body (2), the valve plate assembly (5) is meshed with the driving gear (7) for transmission, an exhaust assembly (4) is installed in the valve body (2), an anti-seepage detection assembly (6) is installed in the valve body (2), and the anti-seepage detection assembly (7) is installed in the valve body (2). The seepage detection component (6) is located at the bottom end of the valve plate component (5), and the exhaust component (4) is located on one side of the valve plate component (5); the valve body (2) is provided with an exhaust duct (22), and an exhaust head (21) is installed at one end of the exhaust duct (22); a blocking groove (24) is provided in the valve body (2), a detection groove (23) is provided in the valve body (2), and a cut-off groove (25) is provided in the valve body (2); the blocking groove (24) is communicated with the exhaust duct (22), the valve plate component (5) is embedded in the cut-off groove (25), and an electric valve is provided at the bottom end of the cut-off groove (25).

2. The exhaust gate valve with anti-blocking function according to claim 1, characterized in that: The valve plate assembly (5) comprises a front valve plate (54) and a rear valve plate (51); the front valve plate (54) is connected to the rear valve plate (51) via a connecting piece; a valve stem (52) is mounted on the rear valve plate (51); the valve stem (52) is provided with a thread; a sliding gear (53) is threadedly mounted on the valve stem (52); the sliding gear (53) is meshed with a driving gear (7) for transmission; the sliding gear (53) is rotatably mounted in the valve body (2); The valve stem (52) is slidably mounted in the valve body (2); a cleaning motor (55) is mounted in the rear valve plate (51); a cleaning gear (56) is mounted on the output shaft of the cleaning motor (55); a cleaning assembly (57) is rotatably mounted between the rear valve plate (51) and the front valve plate (54); the cleaning assembly (57) is meshed with the cleaning gear (56) for transmission; and the front valve plate (54) and the rear valve plate (51) are both tightly fitted in the intercepting groove (25).

3. The exhaust gate valve with anti-blocking function according to claim 2, characterized in that: The cleaning assembly (57) comprises a cleaning toothed ring (571), on which gear teeth are provided. The cleaning toothed ring (571) is meshed with a cleaning gear (56) for transmission. The cleaning toothed ring (571) is rotatably mounted between the front valve plate (54) and the rear valve plate (51). A plurality of sliding rods (575) are slidably mounted on the cleaning toothed ring (571). A brush plate (572) is mounted at one end of the sliding rod (575). The brush plate (572) is provided with bristles. A transmission wheel (573) is rotatably mounted at the other end of the sliding rod (575). A return spring (574) is mounted between the sliding rod (575) and the cleaning toothed ring (571).

4. The exhaust gate valve with anti-blocking function according to claim 3 is characterized in that: A cleaning plate (541) is provided on the front valve plate (54), and brush teeth are provided on the cleaning plate (541), wherein the brush teeth are made of a rigid material; an eccentric ring (542) is provided on the front valve plate (54), and the eccentric ring (542) is designed as an eccentric circular ring.

5. The exhaust gate valve with anti-blocking function according to claim 1, characterized in that: The anti-seepage detection assembly (6) comprises a first rack (62), a second rack (64), a detection ball assembly (67) and a transmission gear (65), wherein the first rack (62) is slidably mounted in the valve body (2), a touch rod (63) is mounted on the top end of the first rack (62), and the touch rod (63) is slidably mounted in the valve body (2), a detection spring (61) is mounted on the bottom end of the first rack (62), and the transmission gear (65) is rotatably mounted in the valve body (2). ) is meshed with the first rack (62) for transmission, the second rack (64) is slidably mounted in the valve body (2), the second rack (64) is meshed with the transmission gear (65) for transmission, a limit rod (66) is mounted on the top of the second rack (64), the limit rod (66) is slidably connected to the valve body (2), a limit ring (68) is mounted on the top of the limit rod (66), the limit ring (68) is slidably connected to the valve body (2), and the detection ball assembly (67) is slidably mounted in the valve body (2).

6. The exhaust gate valve with anti-blocking function according to claim 5, characterized in that: The detection ball assembly (67) comprises a detection housing (673), the detection housing (673) being slidably connected to the valve body (2), a detection connecting rod (672) being mounted on the top of the detection housing (673), a detection floating ball (671) being mounted on the top of the detection connecting rod (672), the detection floating ball (671) being located in the detection groove (23), a diaphragm (674) being mounted in the detection housing (673), a piezoelectric element (675) being mounted between the diaphragms (674), and a detection contact (676) being slidably mounted on the detection housing (673).

7. The exhaust gate valve with anti-blocking function according to claim 6, characterized in that: The detection contact (676) includes a piston plate (6763), which is slidably installed in the detection housing (673). A force transmission plate (6762) is installed on the top of the piston plate (6763). The force transmission plate (6762) passes through the top of the detection housing (673) and is installed with a pressure contact (6761). A sealing design is adopted between the detection housing (673) and the piston plate (6763), and a compressible medium is filled between the detection housing (673) and the piston plate (6763).

8. The exhaust gate valve with anti-blocking function according to claim 1, characterized in that: The exhaust assembly (4) comprises an induction coil (44) and an iron core rod (42), wherein the induction coil (44) is installed in the valve body (2), and the iron core rod (42) is slidably installed in the valve body (2). A limit head (43) is installed at the top end of the iron core rod (42), wherein the diameter of the limit head (43) is larger than the diameter of the iron core rod (42), and the limit head (43) is used to prevent the iron core rod (42) from falling off from the valve body (2). An exhaust float (41) is installed at the other end of the iron core rod (42), and the exhaust float (41) is located in the blocking groove (24), and the inner diameter of the blocking groove (24) is larger than the inner diameter of the exhaust ball.

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