Quick on-off door for pipeline

Abstract

A pipeline fast on-off door comprises a fast door plate, a first half body, a second half body, a driving mechanism, a clamping and stretching device, a swing arm rotating mechanism and a fast door plate executing mechanism. The first half body and the second half body are symmetrical and identical; the fast door plate is located between the sealing surfaces of the first half body and the second half body, and a conducting plate and a complete plate are arranged on the fast door plate side by side; the clamping and stretching devices are located on the two sides, parallel to the moving direction of the fast door plate, of the first half body and the second half body and used for clamping the first half body and the second half body. The driving mechanism is located on the edges, parallel to the moving direction of the fast door plate, of the first half body and the second half body and drives the clamping and stretching device to clamp the first half body and the second half body. The swing arm rotating mechanism is located on the edges, perpendicular to the moving direction of the fast door plate, of the first half body and the second half body and provides additional clamping force for the two half bodies outside the clamping and stretching device. The fast door plate executing mechanism is used for driving the fast door plate to translate. The sealing effect can be improved, and the connector is suitable for connecting and cutting off ultra-large-diameter pipelines.

Description

Technical Field

[0001] The invention relates to a pipeline quick connection and disconnection door, in particular to a device for online quick connection and disconnection of a pipeline with a large flow channel diameter, belonging to the technical field of pipeline connection and disconnection. Background Art

[0002] The blind plate device, also known as the quick on-off valve, is a reliable isolation means used to completely separate the medium to prevent the shut-off valve from being closed tightly and affecting production or even causing accidents. The slide plate with a sealing structure is located between the left valve body and the right valve body. Half of the opening forms a through hole, and the other half is a complete plate. The slide plate is loosened or clamped by the eccentric connecting rod actuator and the driving mechanism of the device. The blind plate device does not require the use of other lifting equipment or disassembly tools. Only one person needs to operate the hand wheel to rotate the shaft to easily and quickly switch the two working states of the pipeline. This type of blind plate device has been described in detail in CN114110191 A.

[0003] The above-mentioned blind plate device includes two main drive shafts and two auxiliary drive shafts, and four eccentric shaft connecting rods are arranged in pairs on both sides of the slide plate, and the slide plate moves cyclically along the arrangement direction perpendicular to the four shafts. The slide plate is clamped by the eccentric section of the main drive shaft driving the four eccentric shaft connecting rod actuators, that is, there are four clamping points on the circumference of the sealing structure on the slide plate. It has been verified that under the same pressure, as the diameter of the blind plate device increases, the sealing effect of the four clamping points solution tends to decrease.

[0004] Therefore, it is necessary to provide an online on-off door, which can realize the rapid connection and disconnection of large-diameter pipelines by improving the structure and increasing the number of clamping points. Summary of the invention

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a pipeline quick-on / off door, to increase the number of clamping points, to improve the sealing effect, and to be suitable for connecting and cutting off pipelines with extra-large diameters.

[0006] The technical solution of the present invention is: a pipeline quick on-off door, comprising: a shutter plate, a first half body, a second half body, a driving mechanism, a clamping and stretching device, a swing arm rotating mechanism and a shutter plate actuator; the connection method of the structure is:

[0007] The first half body and the second half body have the same structure. The center of each half body is a through-throttle hole structure. One end of the throttle hole structure is provided with a flange, which is connected with the flange of the installed pipeline; the other end is a square cover, and one side of the square cover is a sealing surface; the first half body and the second half body are installed opposite to each other on the side containing the sealing surface;

[0008] The shutter plate is located between the sealing surfaces of the first half body and the second half body, and is evenly divided into two sections, one section is provided with a through hole corresponding to the throttling hole structure at the center position for the fluid to pass through, and the other section is a complete plate for cutting off the fluid in the pipeline;

[0009] The clamping and stretching device is located at the edges of the first half body and the second half body, and is used to drive the first half body and the second half body to clamp the shutter plate;

[0010] The driving mechanism is used to provide driving for the clamping and stretching device;

[0011] The swing arm rotating mechanism is used to provide additional clamping force to the two half bodies in addition to the clamping and stretching device, so that the clamping force of the two half bodies is symmetrically distributed on the sealing ring of the shutter plate;

[0012] The shutter plate actuator is located on the shutter plate and the second half body, and is used to drive the shutter plate to translate and control the on-off of the pipeline.

[0013] Preferably, on the first half and the second half:

[0014] The side of the square cover facing the shutter plate is a sealing surface; on the other side, at the edge of the half body perpendicular to the movement direction of the shutter plate, a pressing block is arranged on each side, and the length of the pressing block is greater than the diameter of the throttle hole; between the two pressing blocks, a plurality of guide blocks are arranged on the upper and lower sides of each half body, and a through hole is arranged on the end of each pressing block and the guide block on the corresponding side; a square groove is arranged between two adjacent guide blocks;

[0015] A guide shaft is arranged on the pressing block of the first half body;

[0016] A finger shaft is arranged on the pressing block of the second half body.

[0017] Preferably, the shutter plate is a rectangular plate, one side of the two rectangular windows is a conduction plate, on which a through hole of the same size as the throttling hole is provided, and a sealing ring is provided at the edge of the through hole; the other side is a complete plate, and grooves are relatively provided on both sides of the complete plate according to the position and size of the throttling hole, and sealing rings are placed therein, and two slender rectangular windows parallel to each other are provided between the complete plate and the conduction plate.

[0018] Preferably, the clamping and stretching device comprises two driving shafts: a first driving shaft and a second driving shaft, two receiving shafts: a first receiving shaft and a second receiving shaft, and more than two eccentric shaft connecting rods;

[0019] The first drive shaft and the second drive shaft respectively pass through the through holes on the pressure block and the guide block on the first half body, and a plurality of eccentric sections are symmetrically arranged on the first drive shaft and the second drive shaft; the first receiving shaft and the second receiving shaft respectively pass through the through holes on the throttle hole pressure block and the guide block on the second half body;

[0020] Each eccentric shaft connecting rod is connected to the first receiving shaft or the second receiving shaft at one end in a direction parallel to the axial direction of the throttle hole; the other end is engaged with the eccentric segment on the corresponding first drive shaft or the second drive shaft; the rotation of the first drive shaft and the second drive shaft is converted into relative translation between the first half body and the second half body through each eccentric shaft connecting rod and the first receiving shaft and the second receiving shaft.

[0021] Preferably, the driving mechanism is selected from any of the following forms:

[0022] Manual operating mechanism, electric operating mechanism, pneumatic operating mechanism or hydraulic motor.

[0023] Preferably, the driving mechanism provides drive to transmit the rotational motion to the first driving shaft and the second driving shaft with the eccentric section, and then transmits the translational motion to the first receiving shaft and the second receiving shaft at the other end through the clamping and stretching device.

[0024] Preferably, the swing arm rotating mechanism comprises: a plurality of rotating claws, two sets of transmission components;

[0025] Each rotating claw is a plate-shaped structure, on which a through hole is provided, which is sleeved on the guide shaft corresponding to the first half body, and rotates with the guide shaft as the rotation center; one end of the rotating claw is a claw hook, which can be engaged with the finger shaft of the second half body; the other end of the rotating claw is connected to the transmission component;

[0026] Each set of transmission components is connected to the driving shaft on one side on one hand, and is connected to the non-claw hook end of the rotating claw on the other hand, and the transmission components transmit the rotational motion to the rotating claw through the driving shaft;

[0027] When the rotating claw is in the clamping position, the claw hook engages with the finger shaft of the corresponding second half body, so that the first half body and the second half body clamp the shutter plate; when the claw hook of the rotating claw releases the finger shaft and swings to the bottom of the shutter plate, the shutter plate can be moved.

[0028] Preferably, the transmission component is any one of the following:

[0029] Crank connecting rod mechanism;

[0030] gears, belts, and pulleys;

[0031] Sprocket and chain.

[0032] Preferably, the shutter plate actuator includes a rack, a gear, and a second motor; wherein:

[0033] The rack is connected to the long side of the shutter plate, the gear is meshed with the rack and is connected to the second motor at the same time. The second motor receives an external control signal to control the movement of the gear and drives the shutter plate to move in parallel.

[0034] Compared with the prior art, the present invention has the following advantages:

[0035] (1) The present invention changes the arrangement of the driving shaft and the receiving shaft, and the driving shaft and the receiving shaft extend longitudinally in the direction of movement of the shutter plate. As a result of the structural change, a plurality of eccentric sections can be provided on the driving shaft, and the clamping points on both sides of the direction of movement of the shutter plate are increased, from the original four-point clamping to eight-point clamping;

[0036] (2) The swing arm rotating mechanism designed in the present invention increases the additional sealing force substantially symmetrically in the moving direction of the shutter plate, and adds four clamping points on the circumference of the sealing ring to significantly improve the sealing effect;

[0037] (3) The present invention adopts a dual parallel drive shaft solution, which has better synchronization and timeliness than the crank-connecting rod transmission mechanism between the first main drive shaft and the second drive shaft in the blind plate device, and is more conducive to uniform and symmetrical clamping of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a side view of the overall structure of the present invention;

[0039] Figure 2 is a perspective view of the internal components of the present invention;

[0040] Figure 3 It is a front view of the present invention;

[0041] Figure 4 is a side view of the shutter plate of the present invention;

[0042] Figure 5 It is a side view of the second half of the present invention. DETAILED DESCRIPTION

[0043] The following is a description with reference to the accompanying drawings:

[0044] Figure 1 In the figure, 1 is the overall quick-on / off door, 2 is the shutter plate, 3 is the complete part of the shutter plate, 4 is the throttle hole of the shutter plate, 6 is the first half body, and 7 is the second half body. 8 is the throttle hole of the first half body, and 9 is the throttle hole of the second half body. D1 is the first translation direction of the shutter plate, and the shutter plate cyclically translates along D1 on the M plane, and D2 is the second translation direction of the first half body and the second half body.

[0045] Figure 2 In the figure, 10 is a clamping and stretching device, which includes 11, 12 driving shafts, 13, 14 receiving shafts, 15, 16 eccentric shaft connecting rods. 20 is a driving mechanism, including 21 a first motor, 22 a gear box and 23 a synchronous shaft, 32 and 34 are rotating claws, 42 and 44 are finger shafts, 50 is a shutter plate actuator. 71 is a pressure block, and 72 is a guide block. Z1 and Z2 are the axis extensions of the driving shafts 11 and 12, and Z3 and Z42 are the axis extensions of the receiving shafts 13 and 14.

[0046] Figure 3 In the figure, 19 is a crank connecting rod system, 31 and 33 are rotating claws, 41 and 43 are finger shafts, and 50 is a shutter plate actuator, which includes a rack 51, a gear 52, and a second motor 53. N is a dividing plane of the first half body 6 and the second half body 7 perpendicular to the paper plane. R1, R2, R3, R4 are the rotating axes of the rotating claws 31, 32, 33, 34, and L1, L2, L3, L4 are the rotating axes of the finger shafts 41, 42, 43, 44.

[0047] Figure 4 17 is a square window of the shutter plate, 51 is a rack, and 61 and 62 are sealing rings embedded in the sealing groove.

[0048] Figure 5 In the second half body 7, 70 is a square cover including a sealing surface, and a square groove 75 is formed on the cover.

[0049] A pipeline quick on-off door comprises a shutter plate, a first half body, a second half body, a driving mechanism, a clamping and stretching device, a swing arm rotating mechanism and a shutter plate actuator.

[0050] Different from the arrangement direction of the slide plate in the above-mentioned blind plate device, the shutter plate of the quick-open / close door is arranged in a direction parallel to the axis and moves cyclically between the first half and the second half. One half of the shutter plate has a through hole as large as the throttle hole, and the other half is a complete part. Grooves are provided on both sides of the through hole and the complete plate for placing sealing rings to isolate the fluid in the pipeline from the outside.

[0051] The first half and the second half have throttling holes, one end of which is a flange that docks with the flange of the installed pipe; the other end is a square cover with a sealing surface that fits on the sealing ring of the shutter plate when clamped. The first half and the second half are arranged on both sides of the shutter plate. When the throttling hole of the shutter plate coincides with the throttling holes of the two half bodies, the fluid is allowed to circulate through; when the complete plate coincides with the throttling holes of the two half bodies, the fluid circulation is stopped. Two pressing blocks of the same length as the square cover are arranged longitudinally on the first half and the second half, parallel to the direction of the pressing blocks, and five guide blocks are symmetrically arranged on both sides; the pressing blocks and the guide blocks are provided with through holes.

[0052] The drive mechanism can be manually operated, such as an operating lever or an operating hand wheel; it can also be an electric, pneumatic or hydraulic motor. For quick-open and close doors, its function is to provide drive, transmit the rotational motion to the eccentric drive shaft, and then transmit the translational motion to the receiving shaft at the other end through the clamping and stretching device. Electric is used in this solution.

[0053] The clamping and stretching device is used to clamp the first and second half bodies so that the sealing surface is tightly attached to the sealing ring of the shutter plate; conversely, the two half bodies are moved away from the shutter plate to allow the shutter plate to move horizontally. The clamping and stretching device includes a driving shaft, an eccentric shaft connecting rod, and a receiving shaft. The driving shaft is connected to the first half body, and the receiving shaft is connected to the second half body.

[0054] The two driving shafts extend longitudinally along the through holes of the first half body upper pressing block and the guide block, parallel to the moving direction of the shutter plate. The driving shaft is provided with a plurality of eccentric sections, each of which is sleeved with an eccentric shaft connecting rod, which is connected to the two receiving shafts through the eccentric shaft connecting rod.

[0055] The two receiving shafts extend longitudinally along the through holes of the pressing block and the guide block on the second half body, and are parallel to the moving direction of the shutter plate.

[0056] The present invention no longer adopts the arrangement in which the extension direction of the axis is perpendicular to the movement direction of the slide plate, but the extension direction of the driving axis and the receiving axis is parallel to the translation direction of the shutter plate. This scheme can increase the number of eccentric shaft connecting rods, which is particularly suitable for quick on-off doors to ensure maximum sealing in the case of larger pipe diameters.

[0057] The swing arm rotating mechanism can make the quick-open / close door more sealed. Compared with the above-mentioned blind plate device, its function is to provide additional clamping force in the moving direction of the shutter plate. From the new technical solution, the number of clamping points is increased from four to twelve (eight eccentric shaft connecting rod clamping points, located on both sides of the shutter plate translation direction; four swing arm rotating mechanisms, located in the translation direction of the shutter plate).

[0058] The swing arm rotation mechanism includes a rotating claw, a finger shaft, and a crank connecting rod system. The rotating claw is arranged on the guide shaft of the first half body, and its swinging direction is perpendicular to the translation direction of the shutter plate; the finger shaft is arranged on the second half body, and the rotating claw is hooked with the finger shaft, and the rotating claw is in a clamping position. In other words, the rotating claw rotates between the clamping position and the extended position. Further, when the rotating claw is in the clamping position, it participates in the operation of the first half body and the second half body clamping the shutter plate; when the rotating claw is in the extended position, the shutter plate is released, allowing the shutter plate to translate between the first half body and the second half body.

[0059] The crank-connecting rod system is arranged as a motion transmission component in the moving direction of the shutter plate, located on both sides of the first half body, one end of which is connected to the second driving shaft and the other end is connected to the rotating claw, and the function is to transmit the rotational motion of at least one driving shaft to the rotating claw. This motion transmission component can also be a gear, a belt and a pulley, a sprocket and a chain. This motion transmission can be operated simultaneously or sequentially with the clamping and stretching device. For example, when the two half bodies are separated from each other, the approach of the driving shaft and the receiving shaft can be operated first, and then the motion transmission component of the swing arm rotation system can be operated to rotate the claw relative to the first half body so as to arrange the rotating claw in the clamping position through the opening of the shutter plate.

[0060] Further explanation, the four rotating claws rotate in a swinging manner around the rotating shaft fixed on the first half body, and the four finger shafts are arranged on the second half body and can rotate around their axis. When the rotating claws are rotated, the outer surface of the claws can roll on the cylindrical surface of the finger shaft that cooperates with it, thereby eliminating the friction between the rotating claws and the finger shaft. When the four rotating claws swing to the clamping position, each rotating claw cooperates with the corresponding finger shaft to act on the two half bodies to clamp the shutter plate.

[0061] The first rotating claw and the second rotating claw are located on one side of the first half body, and the third rotating claw and the fourth rotating claw are located on the other side of the first half body, and are symmetrical with respect to the central plane of the first half body. The advantage of such an arrangement is that the clamping force of the two half bodies can be basically symmetrically distributed on the sealing ring of the shutter plate.

[0062] As mentioned above, the rotating claw rotates between the clamping position and the extended position. To provide a space for this rotation, an innovative design is made on the shutter plate, that is, two holes are set between the throttle hole and the complete plate as windows to allow the rotating claw to pass through. In practice, the two rotating claws on one side of the first half body pass through the windows between the throttle hole and the complete plate, and the two rotating claws on the other side pass through the end of the shutter plate.

[0063] The shutter plate actuator is used to cyclically move the shutter plate between the quick-connect and disconnect positions, making it easier to operate and move the shutter plate.

[0064] The shutter plate actuator includes a rack, a gear, a gear shaft and a second motor arranged on the shutter plate. The gear and the rack are meshed to provide power for the movement of the large-sized shutter plate.

[0065] Example:

[0066] A pipeline quick on-off door, such as Figure 1 , 2 As shown in , 3 , it includes a shutter plate 2, a first half body 6, a second half body 7, a driving mechanism 20, a clamping and stretching device 10, a swing arm rotating mechanism 100 and a shutter plate actuator 50.

[0067] A shutter plate 2 is provided which is capable of cyclic translation along a first translation direction D1 in a plane M. The shutter plate has an integral portion 3 arranged to stop fluid circulation and a throttle hole 4 arranged to allow fluid circulation. There are two square openings 17 between the integral portion 3 and the throttle hole 4. In the clamped position, the rotating claws 31, 32, 33, 34 pass through the square openings 17; in the extended position, the rotating claws 31, 32, 33, 34 release the finger shafts 41, 42, 43, 44 and rotate to the rear of the shutter plate 2, allowing the shutter plate 2 to cyclically move in the plane M along the first translation direction D1.

[0068] The shutter plate 2 is provided with a sealing groove, in which a sealing ring 61 and a sealing ring 62 are embedded, which participate in the relative clamping of the shutter plate 2 by the first half body 6 and the second half body 7 in the clamped state. A rack 51 is provided on the side of the shutter plate 2.

[0069] The first half body 6 and the second half body 7 are similar in appearance and details, and are respectively arranged on both sides of the plane M. When the first half body 6 and the second half body 7 are extended, they move along the second translation direction D2 perpendicular to the plane M, that is, the first half body 6 and the second half body 7 can simultaneously approach and move away from the shutter plate along the second translation direction D2, that is, the so-called clamped and extended state.

[0070] The first half body 6 and the second half body 7 respectively have throttle holes 8 and 9. When the throttle hole 4 of the shutter plate 2 is aligned therewith, fluid is allowed to pass through the quick on-off door 1.

[0071] The first half body 6 and the second half body 7 are basically the same in appearance and details. One end is a flange that docks with the installed pipe flange; the other end is a square cover 70 containing a sealing surface. The first half body 6 and the second half body 7 are installed opposite to each other with one side containing the sealing surface, and fit on the sealing rings 61 and 62 of the shutter plate when clamped. Two pressing blocks 71 of the same length as the square cover 70 are arranged longitudinally on the first half body 6 and the second half body 7, parallel to the direction of the pressing blocks 71, and five guide blocks 72 are symmetrically arranged on both sides; the pressing blocks 71 and the guide blocks 72 are provided with through holes, and Z10 and Z20 are the extension lines of the holes formed by the through holes. The square cover 70 is symmetrically provided with square grooves 75 for the eccentric shaft connecting rod of the clamping and stretching device 10 to swing in a direction perpendicular to the long side of the shutter plate, and its function is to limit the clamping and stretching actions of the eccentric shaft connecting rods 15 and 16 therein, so as to minimize the size of the square cover 70. A plurality of guide shafts are arranged on the pressing block of the first half body 6 for the rotating claw of the swing arm rotating mechanism to rotate around its axis; a plurality of finger shafts are arranged on the pressing block of the second half body 7 for meshing with the hook claw part of the rotating claw of the swing arm rotating mechanism.

[0072] The driving mechanism 20 is located on the edge of the first half body 6 and the second half body 7 parallel to the short side of the shutter plate, and includes a first motor 21, a gear box 22 and a synchronous shaft 23. The first motor 21 and the gear box 22 are connected by a flange, and the two gear boxes 22 are connected by a key through the synchronous shaft 23. The driving mechanism 20 provides drive and transmits the rotational motion to the first driving shaft 11 and the second driving shaft 12 with eccentric sections, and then transmits the translational motion to the first receiving shaft 13 and the second receiving shaft 14 at the other end through the clamping and stretching device 10. In this solution, electric operation is adopted, and manual operation, such as an operating lever or an operating hand wheel, or a pneumatic or hydraulic motor is also possible.

[0073] It is particularly noted that the synchronization shaft 23 is connected between the two gear boxes 22, and the rotational motion is directly transmitted from the electric head 20 to the first drive shaft 11 and the second drive shaft 12, which is different from the crank-connecting rod transmission mechanism between the first main drive shaft and the second drive shaft in CN 114110191 A. This improvement eliminates the synchronization loss between the drive shafts 11 and 12, which is very beneficial for the first half body 6 and the second half body 7 to be parallel to the shutter plate 2.

[0074] The clamping and stretching device 10 is located on both sides of the first half body 6 and the second half body 7 parallel to the moving direction of the shutter plate 2, and is used to clamp the first half body 6 and the first half body 7 close to the shutter plate 2; otherwise, it is used to keep the first half body 6 and the first half body 7 away from the shutter plate 2. The clamping and stretching device 10 includes a first driving shaft 11 and a second driving shaft 12, which respectively pass through the through holes set on the pressure blocks on both sides of the throttle hole on the first half body 6 and the guide block, and the first driving shaft 11 and the second driving shaft 12 are symmetrically provided with a plurality of eccentric segments; connected to the first receiving shaft 13 and the second receiving shaft 14 through at least two eccentric shaft connecting rods, and the first receiving shaft 13 and the second receiving shaft 14 respectively pass through the through holes set on the pressure blocks on both sides of the throttle hole on the second half body 7 and the guide block. The eccentric shape part is meshed with the eccentric shaft connecting rod, that is, each eccentric shaft connecting rod is connected to the first receiving shaft 13 and the second receiving shaft 14 at one end in a direction parallel to the axial direction of the throttle hole; and the other end is meshed with the eccentric segment on the first driving shaft 11 or the second driving shaft 12. Therefore, the rotation of the first drive shaft 11 and the second drive shaft 12 is achieved through the eccentric part, at least two eccentric shaft connecting rods ( Figure 2 15 and 16 ) and two receiving axes (a first receiving axis 13 and a second receiving axis 14 ) are converted into a relative translation between the first half body 6 and the second half body 7 .

[0075] The drive shafts 11, 12 and the receiver shafts 13, 14 extend longitudinally along four parallel axes Z1, Z2, Z3, Z4, respectively. In addition, the four axes Z1, Z2, Z3, Z4 are arranged parallel to the first translation direction D1 of the shutter plate 2. Moreover, this arrangement is optimal, ensuring good sealing between the two half bodies 6 and 7 and the shutter plate 2, and is particularly suitable for large-sized fast-on and -off doors. The two receiving shafts 13 and 14 are arranged in a manner that they are connected to the second half body 7 and are installed in the through holes provided in the pressure block 71 and the guide block 72; the two drive shafts 11 and 12 are arranged in a manner that they are connected to the first half body 6, and the installation manner is consistent with the receiving shafts 13 and 14. The swing arm rotating mechanism 100 is located on the edges of the first half body 6 and the second half body 7 parallel to the short sides of the shutter plate, and includes four rotating claws (31, 32, 33, 34), four finger shafts (41, 42, 43, 44), and two crank connecting rod systems 19. The rotating claws (31, 32, 33, 34) are rotatable around the rotating axes (R1, R2, R3, R4). The rotating axes (R1, R2, R3, R4) are arranged parallel to the first translation direction D1 of the shutter plate 2.

[0076] The rotating claws (31, 32, 33, 34) can rotate and move between a clamping position and an extended position. In the clamping position, the rotating claws (31, 32, 33, 34) pass through the rectangular window 17 and can participate in the relative clamping of the first half body 6 and the second half body 7 on the shutter plate 2. In the extended position, the rotating claws (31, 32, 33, 34) release the shutter plate 2, allowing the operator to translate the shutter plate 2 on the plane M along the first translation direction D1.

[0077] The swing arm rotating mechanism 100 includes two transmission components, namely a crank connecting rod system 19, and two cranks are respectively fixed at both ends of the second drive shaft 12 to transmit the rotational motion of the second drive shaft 12 to the rotating claws (31, 32, 33, 34). Such transmission components can be a crank connecting rod system, or a gear, a belt and a pulley, a sprocket and a chain.

[0078] Each rotating claw is a non-isosceles obtuse triangle flat plate, and the long side acute angle is designed as a claw hook, which can be hooked on the finger shaft of the second half body 7 corresponding to it, and there is a through hole at the obtuse angle, which is sleeved on the guide shaft corresponding to the first half body 6, and the rotating claw rotates with the guide shaft as the rotation center; a fixed shaft is set at the short side acute angle to connect the transmission component;

[0079] The finger shaft rotates cylindrically around its axis, and when the rotating claw is rotated, the outer surface of the claw hook can roll on the cylindrical outer surface of the finger shaft cooperating with it;

[0080] When the transmission component is a crank-connecting rod system, it includes a crank, a first connecting rod and a second connecting rod. Take one side as an example: the crank is fixed on the second drive shaft 12, one end of which is connected to the first connecting rod, the first connecting rod is connected to the second connecting rod, and the second connecting rod is sleeved on the fixed shafts of the two rotating claws on the same side. The transmission component transmits the rotational motion of the second drive shaft 12 to the rotating claw;

[0081] When the rotating claw is arranged in the clamping position, the rotating claw is hooked on the corresponding finger shaft, so that the first half body 6 and the second half body 7 clamp the shutter plate 2; at this time, the two rotating claws on one side pass through a rectangular window of the shutter plate 2, and the two rotating claws on the other side pass through the end of the shutter plate 2; when the rotating claw moves to the extended position, the claw hook of the rotating claw releases the finger shaft and swings to the bottom of the shutter plate 2, and the operator can move the shutter plate 2 at this time.

[0082] When the rotating claws (31, 32, 33, 34) are arranged in the clamping position, the claw hooks of each rotating claw (31, 32, 33, 34) are hooked with the corresponding finger shaft (41, 42, 43, 44). The finger shaft (41, 42, 43, 44) is connected to the second half body 7 and rotates cylindrically around the rotation axis (L1, L2, L3, L4) parallel to the rotation axis (R1, R2, R3, R4) of the rotating claws (31, 32, 33, 34). This allows the clamping and telescopic device 10 to operate to clamp the two half bodies 6, 7 on the shutter plate 2, and the rotating claws (31, 32, 33, 34) and the finger shaft (41, 42, 43, 44) can rotate relative to each other without sliding friction.

[0083] refer to Figure 2 and Figure 3 The quick-on / off door 1 comprises four rotating claws (31, 32, 33, 34), which are arranged in two pairs of claws (31-33 and 32-34) and are arranged in a Figure 3 The N-divided planes are symmetrically distributed.

[0084] The shutter plate actuator 50 includes a rack 51, a gear 52, a gear shaft, and a second motor 53. The rack 51 is connected to the long side of the shutter plate 2. The gear 52 and the second motor 53 are located at the edge of the first half body 6 or the second half body 7. The gear 52 is meshed with the rack 51 and connected to the second motor 53. The second motor 53 receives an external control signal to control the movement of the gear, driving the shutter plate 2 to move in parallel. In order to translate the shutter plate 2 between the cyclic position where the fluid stops and the cyclic position where the fluid passes. Of course, other variants not shown can also be considered, such as using a hand wheel, pneumatic or hydraulic methods.

[0085] The contents not described in detail in the specification of the present invention belong to the prior art known to the professional and technical personnel in this field.

Claims

1. A pipeline quick on-off door, characterized in that include: A shutter plate (2), a first half body (6), a second half body (7), a clamping and stretching device (10), a driving mechanism (20), a swing arm rotating mechanism (100) and a shutter plate actuator (50); the structure is connected in the following manner: The first half body (6) and the second half body (7) have the same structure. The center of each half body is a through-hole structure. One end of the throttle hole structure is provided with a flange that is connected to the flange of the installed pipeline. The other end is a square cover, and one side of the square cover is a sealing surface. The first half body (6) and the second half body (7) are installed relative to each other on the side containing the sealing surface. The shutter plate (2) is located between the sealing surfaces of the first half body (6) and the second half body (7), and is evenly divided into two sections, one section having a through hole corresponding to the throttling hole structure at the center thereof for fluid to pass through, and the other section being a complete plate for cutting off the fluid in the pipeline; The clamping and stretching device (10) is located at the edges of the first half body (6) and the second half body (7), and is used to drive the first half body (6) and the second half body (7) to clamp the shutter plate (2); The driving mechanism (20) provides driving for the clamping and stretching device (10); The swing arm rotating mechanism (100) is used to provide additional clamping force to the two half bodies outside the clamping and stretching device (10), so that the clamping force of the two half bodies is symmetrically distributed on the sealing ring of the shutter plate; The shutter plate actuator (50) is located on the shutter plate (2) and the second half body (7), and is used to drive the shutter plate (2) to move in translation, thereby controlling the on-off of the pipeline.

2. A pipeline quick-opening and closing door according to claim 1, characterized in that: On the first half (6) and the second half (7): The side of the square cover facing the shutter plate is a sealing surface; on the other side, at the edge of the half body perpendicular to the movement direction of the shutter plate, a pressing block is arranged on each side, and the length of the pressing block is greater than the diameter of the throttle hole; between the two pressing blocks, a plurality of guide blocks are arranged on the upper and lower sides of each half body, and a through hole is arranged on the end of each pressing block and the guide block on the corresponding side; a square groove (75) is arranged between two adjacent guide blocks; A guide shaft is arranged on the pressing block of the first half body (6); A finger shaft is arranged on the pressing block of the second half body (7).

3. A pipeline quick-opening and closing door according to claim 2, characterized in that: The shutter plate (2) is a rectangular plate, one side of the two rectangular windows is a conduction plate, on which a through hole of the same size as the throttle hole is arranged, and a sealing ring is arranged at the edge of the through hole; the other side is a complete plate, and grooves are arranged on both sides of the complete plate according to the position and size of the throttle hole, and the sealing ring is placed therein, and two parallel elongated rectangular windows are arranged between the complete plate and the conduction plate.

4. A pipeline quick-opening and closing door according to claim 2, characterized in that: A clamping and stretching device (10) comprises two driving shafts: a first driving shaft (11) and a second driving shaft (12), two receiving shafts: a first receiving shaft (13) and a second receiving shaft (14), and more than two eccentric shaft connecting rods; The first drive shaft (11) and the second drive shaft (12) respectively pass through the through holes on the pressure block and the guide block on the first half body (6); the first drive shaft (11) and the second drive shaft (12) are symmetrically provided with a plurality of eccentric sections; the first receiving shaft (13) and the second receiving shaft (14) respectively pass through the through holes on the throttle hole pressure block and the guide block on the second half body (7); Each eccentric shaft connecting rod is connected to the first receiving shaft (13) or the second receiving shaft (14) at one end in a direction parallel to the axial direction of the throttle hole; the other end is meshed with the eccentric section on the corresponding first drive shaft (11) or the second drive shaft (12); the rotation of the first drive shaft (11) and the second drive shaft (12) is converted into relative translation between the first half body (6) and the second half body (7) through each eccentric shaft connecting rod and the first receiving shaft (13) and the second receiving shaft (14).

5. The pipeline quick-opening and closing door according to claim 1 is characterized in that: The driving mechanism (20) is selected from any of the following forms: Manual operating mechanism, electric operating mechanism, pneumatic operating mechanism or hydraulic motor.

6. A pipeline quick-opening and closing door according to claim 4, characterized in that: The driving mechanism (20) provides drive to transmit rotational motion to a first driving shaft (11) and a second driving shaft (12) with an eccentric section, and then transmits translational motion to a first receiving shaft (13) and a second receiving shaft (14) at the other end through a clamping and stretching device (10).

7. The pipeline quick-opening and closing door according to claim 1 is characterized in that: The swing arm rotating mechanism (100) comprises: a plurality of rotating claws and two sets of transmission components; Each rotating claw is a plate-shaped structure, on which a through hole is provided and sleeved on the guide shaft corresponding to the first half body (6), and performs a rotating motion with the guide shaft as the rotation center; one end of the rotating claw is a claw hook, which can be engaged with the finger shaft of the second half body (7); the other end of the rotating claw is connected to the transmission component; Each set of transmission components is connected to the driving shaft on one side on one hand, and is connected to the non-claw hook end of the rotating claw on the other hand, and the transmission components transmit the rotational motion to the rotating claw through the driving shaft; When the rotating claw is located at the clamping position, the claw hook engages with the finger axis of the corresponding second half body (7), so that the first half body (6) and the second half body (7) clamp the shutter plate (2); when the claw hook of the rotating claw releases the finger axis and swings to the bottom of the shutter plate (2), the shutter plate (2) can be moved.

8. The pipeline quick-opening and closing door according to claim 1, characterized in that: Transmission components can be selected from any of the following: Crank connecting rod mechanism; gears, belts, and pulleys; Sprocket and chain.

9. The pipeline quick-opening and closing door according to claim 1, characterized in that: The shutter plate actuator (50) comprises a rack (51), a gear (52), and a second motor (53); wherein: The rack (51) is connected to the long side of the shutter plate (2), the gear (52) is meshed with the rack (51) and is connected to the second motor (53) at the same time. The second motor (53) receives an external control signal to control the movement of the gear, thereby driving the shutter plate (2) to move in parallel.

Images