CN112128397A

CN112128397A - Valve rod anti-rollback device for high-pressure valve

Info

Publication number: CN112128397A
Application number: CN202010949225.7A
Authority: CN
Inventors: 张诗逸
Original assignee: Hubei Tiansheng Yilin Technology Co ltd
Current assignee: Hubei Tiansheng Yilin Technology Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2020-12-25

Abstract

The invention provides a valve rod anti-rollback device for a high-pressure valve, which comprises a lower valve body, a flashboard and a cartridge barrel, wherein the lower valve body is provided with a lower valve body; still be equipped with sealed the pad down between valve body and the last gland, the upper end of going up the gland still is equipped with down a sealed section of thick bamboo, and is connected through two sets of U type connecting rods between a sealed section of thick bamboo and the last connecting cylinder down, still pack in the sealed section of thick bamboo down and have spiral helicine sealing filler, the screw hole that the clamp plate passes through its both ends and down between the sealed section of thick bamboo bolted connection, a cartridge is in screens step and the lower bolster in last connecting cylinder, and the lower bolster twists the dress on the inboard screw thread of last connecting cylinder through the screw thread in its outside, a cartridge still passes through the screw thread and the screw rod threaded connection of side in it. The hand wheel is rotated to respectively drive the upper limiting gear to synchronously move downwards and drive the lower limiting gear to move upwards, when the flashboard seals the water inlet pipe and the water outlet pipe, the upper limiting gear is meshed with the external thread sleeve to stop the upward stop of the limiting block, and the valve rod is prevented from automatically returning.

Description

Valve rod anti-rollback device for high-pressure valve

Technical Field

The invention belongs to the technical field of valve control, and particularly relates to a valve rod anti-rollback device for a high-pressure valve.

Background

The valves are pipe fittings for opening and closing pipes, controlling flow direction, regulating and controlling temperature, pressure and flow of the parameters of the conveyed medium, and can be classified into shut-off valves, check valves, regulating valves, etc. according to their functions, the valves are control parts in fluid conveying systems, have the functions of stopping, regulating, guiding, preventing backflow, stabilizing pressure, shunting or overflowing pressure relief, etc., are used for valves of fluid control systems, and are quite various in variety and specification from the simplest stop valves to various valves used in extremely complicated automatic control systems.

If the application number is: in CN 201921430944.7's patent, a high pressure valve is with preventing valve rod back-off device is disclosed, including the high pressure valve body, the top of high pressure valve body is provided with the valve rod body, and the surface cover of valve rod body is equipped with fixing bolt, and fixing bolt's top fixedly connected with set casing, the bottom of valve rod body run through set casing and high pressure valve body in proper order and extend to the inner chamber of high pressure valve body. The utility model discloses a set up the high-pressure valve body, the valve rod body, fixing bolt, the set casing, the gear, the movable ring, first sliding sleeve, first slide bar, and a housing, lead to the groove, stop gear, the spacing groove is used with the cooperation that draws the piece, it prevents that the valve rod from returning the function to have solved current high-pressure valve lack in the use, lead to the great valve rod of fluid pressure to appear returning the phenomenon, cause the condition of fluid leakage, the practicality of high-pressure valve has been reduced, the problem that the person of not being convenient for used, this high-pressure valve is with preventing that the valve rod from returning the device, possess and be convenient for carry out the advantage fixed to.

Based on the above, when the valve is closed to the right place through the operating handwheel, not only the operating handwheel needs to pull the pull rod to lock the valve rod, but also the pull rod is operated while operating the handwheel, the operation is troublesome, and when the valve rod is unlocked, the pull rod needs to be pulled out first, so that the rotating handwheel can be operated.

Disclosure of Invention

In order to solve the technical problems, the invention provides a valve rod anti-backspacing device for a high-pressure valve, which aims to solve the problems that when a valve of an operating hand wheel is closed in place, the operating hand wheel is required to operate, a pull rod is required to be pulled to lock the valve rod, the pull rod is required to be operated when the operating hand wheel is operated, and when the valve rod is unlocked, the pull rod needs to be pulled out first, so that the rotating hand wheel can be operated.

The invention relates to a valve rod anti-rollback device for a high-pressure valve, which is achieved by the following specific technical means:

a valve rod anti-rollback device for a high-pressure valve comprises a lower valve body, a flashboard and a cartridge; the two ends of the lower valve body are respectively connected with a liquid inlet pipe and a liquid outlet pipe, the lower valve body is connected with an upper gland through bolts in a sealing manner, a sealing gasket is further arranged between the lower valve body and the upper gland, the upper end of the upper gland is also provided with a lower sealing barrel, the lower sealing barrel is connected with the upper connecting barrel through two groups of U-shaped connecting rods, a clamping step and an internal thread are arranged in the upper connecting barrel, the flashboard is slidably arranged between the liquid inlet pipe and the liquid outlet pipe in the lower valve body, the top end of the flashboard is clamped with a valve rod, the valve rod upwards penetrates through the upper gland, the lower sealing barrel and the upper connecting barrel and is connected with a screw rod, the lower sealing barrel is also filled with spiral sealing filler, the upper end of the filler is pressed through a filler pressing plate, the filler pressing plate is connected with the lower sealing barrel through bolts through threaded holes at the two ends of, and the lower cushion block is screwed on the thread on the inner side of the upper connecting cylinder through the thread on the outer side of the lower cushion block, the inserting cylinder is further in threaded connection with the screw rod through the thread on the inner side end of the inserting cylinder, the hand wheel is inserted and arranged on the lower cushion block on the inserting cylinder and is in clamping connection with the inserting cylinder, and the upper locking nut is in meshed connection with the thread on the outer side of the upper end of the inserting cylinder through the thread on the inner side of the upper locking nut.

Furthermore, the bottom peripheral end of the hand wheel is also provided with a driving gear, the driving gear is meshed with the upper linkage gear, and the upper linkage gear is fixedly installed on the vertical valve rod.

Furthermore, there is an external thread sleeve in the middle of the top of the packing pressing plate through a bolt, a through hole is formed in the external thread sleeve, the valve rod is movably inserted into the through hole, and two sets of opposite vertical notches are formed in the external thread sleeve.

Furthermore, still be connected with two sets of relative stoppers on the valve rod, and the stopper pastes at the slip card dress in vertical breach.

Further, the outer side of the upper half part of the external thread sleeve is provided with forward threads, the middle of the inner part of the upper limiting gear is provided with the forward threads and is connected with the upper half part of the external thread sleeve in a meshed mode, the outer side of the lower half part of the external thread sleeve is provided with reverse threads, and the middle of the inner part of the lower limiting gear is provided with the reverse threads and is connected with the lower half part of the external thread sleeve in a meshed mode.

Furthermore, the upper limit gear is meshed with the first linkage gear, the lower limit gear is meshed with the second linkage gear, the structures of the upper limit gear and the lower limit gear are the same as those of the driving gear, and the structures of the first linkage gear and the second linkage gear are the same as those of the upper linkage gear.

Furthermore, the first linkage gear and the second linkage gear are respectively installed on a spline structure of the vertical valve rod in a sliding mode, and the vertical valve rod is rotatably inserted into the group of U-shaped connecting rods in a penetrating mode.

Furthermore, the upper end and the lower end of the upper limiting gear and the lower end of the lower limiting gear are respectively connected with a circular baffle, one end of the first linkage gear is clamped into the circular baffles on the two sides of the upper limiting gear, one end of the second linkage gear is clamped into the circular baffles on the two sides of the lower limiting gear, and the limiting block is attached to the circular baffle on the bottom side of the upper limiting gear.

The invention at least comprises the following beneficial effects:

1. according to the invention, the driving gear is arranged at the bottom of the hand wheel, the upper linkage gear and the vertical valve rod are driven to rotate by rotating the hand wheel through the driving gear, the upper linkage gear and the vertical valve rod are driven to synchronously move downwards by utilizing the meshing of the first linkage gear and the second linkage gear with the upper limiting gear and the lower limiting gear respectively, the lower limiting gear is driven to move upwards, the limiting block is attached to the circular baffle at the top of the lower limiting gear when the water inlet pipe and the water outlet pipe are sealed by the flashboard, the valve rod is blocked from continuing to move downwards by the lower limiting gear, the flashboard is prevented from continuing to move downwards, meanwhile, the upper limiting gear is meshed with the external thread sleeve to block and limit the upward limiting block of the limiting block, the valve rod is prevented from automatically returning, only the hand wheel is operated, and only the.

Drawings

Fig. 1 is a schematic view of the shutter of the present invention in an open state.

Fig. 2 is a schematic view of the first viewing angle structure shown in fig. 1 according to the present invention.

Fig. 3 is a schematic side view of the invention shown in fig. 1.

Fig. 4 is a schematic view of the upper hand wheel of fig. 1 with the upper hand wheel disassembled.

Fig. 5 is a structural schematic diagram of the lower valve body in fig. 1 after being cut.

Fig. 6 is a schematic view of the shutter of the present invention closed.

Fig. 7 is a structural schematic diagram of the invention in fig. 6 with the lower valve body cut.

Fig. 8 is a schematic side view of the invention shown in fig. 6.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a lower valve body; 101. a liquid inlet pipe; 102. a liquid outlet pipe; 103. a gland is arranged; 1031. a lower sealing cylinder; 1032. a U-shaped connecting rod; 1033. an upper connecting cylinder; 104. a gasket; 105. a packing press plate; 1051. a threaded hole; 2. a shutter plate; 201. a valve stem; 2011. a screw; 2012. a limiting block; 3. a cartridge is inserted; 4. a hand wheel; 401. a lower cushion block; 402. locking the nut; 403. a drive gear; 5. a vertical valve stem; 501. an upper linkage gear; 502. a first linkage gear; 503. a second linkage gear; 6. an external thread sleeve; 601. a vertical notch; 602. an upper limiting gear; 603. a lower limit gear; 604. a circular baffle.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "two ends," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, and for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Example (b):

as shown in figures 1 to 8:

the invention provides a valve rod anti-rollback device for a high-pressure valve, which comprises a lower valve body 1, a flashboard 2 and a cartridge 3, wherein the lower valve body is provided with a slide block; the two ends of the lower valve body 1 are respectively connected with a liquid inlet pipe 101 and a liquid outlet pipe 102, the lower valve body 1 is connected with an upper gland 103 in a sealing way through bolts, a sealing gasket 104 is further arranged between the lower valve body 1 and the upper gland 103, the upper end of the upper gland 103 is further provided with a lower sealing cylinder 1031, the lower sealing cylinder 1031 is connected with an upper connecting cylinder 1033 through two groups of U-shaped connecting rods 1032, a clamping step and internal threads are arranged in the upper connecting cylinder 1033, the gate plate 2 is slidably arranged between the liquid inlet pipe 101 and the liquid outlet pipe 102 in the lower valve body 1, the top end of the gate plate 2 is clamped with a valve rod 201, the valve rod 201 upwards penetrates through the upper gland 103, the lower sealing cylinder 1031 and the upper connecting cylinder 1033 and is connected with a screw 2011, spiral sealing filler is filled in the lower sealing cylinder 1031, the upper end of the filler is pressed through a filler pressing plate 105, the filler pressing plate 105 is connected with the lower sealing cylinder 1031 through the threaded holes 1051 at the two ends through the bolts, the lower cushion block 401 is screwed on the thread on the inner side of the upper connecting cylinder 1033 through the thread on the outer side of the lower cushion block, the insertion cylinder 3 is further in threaded connection with the screw 2011 through the thread on the inner side end of the insertion cylinder, the hand wheel 4 is inserted on the insertion cylinder 3 and placed on the lower cushion block 401 to be in clamping connection with the insertion cylinder 3, and the upper locking nut 402 is in meshed connection with the thread on the outer side of the upper end of the insertion cylinder 3 through the thread on the inner side of the upper locking nut 402.

The bottom peripheral end of the hand wheel 4 is further provided with a driving gear 403, the driving gear 403 is meshed with the upper linkage gear 501, the upper linkage gear 501 is fixedly mounted on the vertical valve rod 5, the driving gear 403 is driven to rotate synchronously when the hand wheel 4 is rotated, and the upper linkage gear 501 and the vertical valve rod 5 are driven to rotate through meshing of the driving gear 403 and the upper linkage gear 501.

Wherein, still there is external screw thread cover 6 through bolted connection in the middle of the top of packing clamp plate 105, and be equipped with the through-hole in the external screw thread cover 6, valve rod 201 activity alternates in the through-hole, still be equipped with two sets of relative vertical breach 601 on the external screw thread cover 6, still be connected with two sets of relative stopper 2012 on the valve rod 201, and stopper 2012 pastes and slides and clamps in vertical breach 601, when driving valve rod 201 downward or upward movement through hand wheel 4, can make stopper 2012 follow valve rod 201 in vertical breach 601 and move in step.

Wherein, the outer side of the upper half part of the external thread sleeve 6 is provided with a forward thread, the middle inside the upper limit gear 602 is provided with a forward thread and is meshed with the upper half part of the external thread sleeve 6, the outer side of the lower half part of the external thread sleeve 6 is provided with a reverse thread, the middle inside of the lower limit gear 603 is provided with a reverse thread and is meshed with the lower half part of the external thread sleeve 6, the upper limit gear 602 is also meshed with the first linkage gear 502, the lower limit gear 603 is also meshed with the second linkage gear 503, the structures of the upper limit gear 602 and the lower limit gear 603 are the same as the structure of the driving gear 403, the first linkage gear 502 and the second linkage gear 503 are the same as the structure of the upper linkage gear 501, the first linkage gear 502 and the second linkage gear 503 are respectively slidably mounted on the spline structure of the vertical valve rod 5, the vertical valve rod 5 is rotatably inserted on a group of U-shaped connecting rods 1032, the upper limit gear 602 and the lower limit gear 603 are respectively, one end of the first linkage gear 502 is clamped into the circular baffles 604 at the two sides of the upper limit gear 602, one end of the second linkage gear 503 is clamped into the circular baffles 604 at the two sides of the lower limit gear 603, respectively, and the limiting block 2012 is also attached to the circular baffle 604 at the bottom side of the upper limit gear 602, when the handwheel 4 is rotated, the first linkage gear 502 and the second linkage gear 503 are respectively engaged with the upper limit gear 602 and the lower limit gear 603, so that the upper limit gear 602 synchronously moves downwards on the forward thread at the upper end of the external thread bushing 6, the lower limit gear 603 is driven to synchronously move upwards on the reverse thread at the lower end of the external thread bushing 6, when the water outlet end of the water inlet pipe 101 and the water inlet end of the water outlet pipe 102 are closed by the gate plate 2, the limiting block 2012 is attached to the circular baffle 604 at the top of the lower limit gear 603, and the valve rod 201 is blocked by the lower limit gear 603, the gate plate 2 is prevented from continuously moving downwards, and meanwhile, the upper limiting gear 602 is meshed with the external thread sleeve 6 to block and limit the upward blocking of the limiting block 2012 and prevent the valve rod 201 from automatically returning.

The specific use mode and function of the embodiment are as follows:

when the device is used, the handwheel 4 is rotated to drive the driving gear 403 to synchronously rotate, the upper linkage gear 501 and the vertical valve rod 5 are driven to rotate by the meshing of the driving gear 403 and the upper linkage gear 501, the upper limiting gear 602 and the vertical valve rod 5 synchronously move downwards on the forward thread at the upper end of the external thread sleeve 6 by the meshing of the first linkage gear 502 and the second linkage gear 503 with the upper limiting gear 602 and the lower limiting gear 603 respectively, the lower limiting gear 603 is driven to synchronously move upwards on the reverse thread at the lower end of the external thread sleeve 6, when the water outlet end of the water inlet pipe 101 and the water inlet end of the water outlet pipe 102 are sealed by the flashboard 2, the limiting block 2012 is attached to the circular baffle 604 at the top of the lower limiting gear 603, the lower limiting gear 603 is used for blocking the valve rod 201 of the limiting block 2012 to continuously move downwards, the flashboard 2 is prevented from continuously moving downwards, and simultaneously, the upper limiting gear 602 is, the valve rod 201 is prevented from automatically returning, only the hand wheel 4 needs to be operated, and only the hand wheel 4 needs to be rotated reversely when unlocking is needed.

The invention is not described in detail, but is well known to those skilled in the art.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a valve rod anti-rollback device for high pressure valve which characterized in that: comprises a lower valve body (1), a flashboard (2) and an insertion cylinder (3); the two ends of the lower valve body (1) are respectively connected with a liquid inlet pipe (101) and a liquid outlet pipe (102), the lower valve body (1) is connected with an upper gland (103) through bolts in a sealing manner, a sealing gasket (104) is further arranged between the lower valve body (1) and the upper gland (103), the upper end of the upper gland (103) is further provided with a lower sealing cylinder (1031), the lower sealing cylinder (1031) is connected with the upper connecting cylinder (1033) through two groups of U-shaped connecting rods (1032), a clamping step and an internal thread are arranged in the upper connecting cylinder (1033), the gate plate (2) is slidably arranged between the liquid inlet pipe (101) and the liquid outlet pipe (102) in the lower valve body (1), the top end of the gate plate (2) is clamped with a valve rod (201), the valve rod (201) upwards penetrates through the upper gland (103), the lower sealing cylinder (1031) and the upper connecting cylinder (1033) and is connected with a screw rod (2011), and spiral sealing packing is further filled in the lower sealing, and the upper end of packing passes through packing clamp plate (105) pressfitting, and bolted connection between screw hole (1051) and the lower sealing cylinder (1031) at its both ends is passed through to packing clamp plate (105), a screens step and lower cushion (401) of cartridge (3) cartridge in last connecting cylinder (1033), and lower cushion (401) twist the dress on the inboard screw thread of last connecting cylinder (1033) through the screw thread in its outside, cartridge (3) still through the screw thread and screw rod (2011) threaded connection of its inboard end, and hand wheel (4) cartridge put on cartridge (3) on lower cushion (401) with cartridge (3) clamping connection, and go up lock nut (402) and be connected through the screw thread of its inboard and the thread engagement in the cartridge (3) upper end outside.

2. The stem anti-rollback apparatus for a high pressure valve as claimed in claim 1, wherein: the bottom peripheral end of hand wheel (4) still is equipped with drive gear (403), and drive gear (403) and last linkage gear (501) meshing connection, goes up linkage gear (501) fixed mounting have on vertical valve rod (5).

3. The stem anti-rollback apparatus for a high pressure valve as claimed in claim 1, wherein: the middle of the top of the packing pressing plate (105) is connected with an external thread sleeve (6) through a bolt, a through hole is formed in the external thread sleeve (6), the valve rod (201) is movably inserted into the through hole, and two sets of opposite vertical notches (601) are formed in the external thread sleeve (6).

4. The stem anti-rollback apparatus for a high pressure valve as claimed in claim 1, wherein: the valve rod (201) is further connected with two sets of opposite limiting blocks (2012), and the limiting blocks (2012) are attached to the vertical notch (601) in a sliding clamping mode.

5. A stem anti-rollback apparatus for a high pressure valve as claimed in claim 3, wherein: the upper half outer side of the external thread sleeve (6) is provided with forward threads, the upper limiting gear (602) is internally provided with the forward threads in the middle and is meshed with the upper half of the external thread sleeve (6), the lower half outer side of the external thread sleeve (6) is provided with reverse threads, and the lower limiting gear (603) is internally provided with the reverse threads in the middle and is meshed with the lower half of the external thread sleeve (6).

6. The stem anti-rollback apparatus for a high pressure valve according to claim 5, wherein: the upper limiting gear (602) is further meshed with the first linkage gear (502), the lower limiting gear (603) is further meshed with the second linkage gear (503), the structures of the upper limiting gear (602) and the lower limiting gear (603) are the same as those of the driving gear (403), and the structures of the first linkage gear (502) and the second linkage gear (503) are the same as those of the upper linkage gear (501).

7. The stem anti-rollback apparatus for a high pressure valve as claimed in claim 6, wherein: the first linkage gear (502) and the second linkage gear (503) are respectively installed on a spline structure of the vertical valve rod (5) in a sliding mode, and the vertical valve rod (5) is rotatably inserted into the group of U-shaped connecting rods (1032).

8. The stem anti-rollback apparatus for a high pressure valve as claimed in claim 6, wherein: the upper end and the lower end of the upper limiting gear (602) and the lower limiting gear (603) are respectively connected with a circular baffle (604), one end of the first linkage gear (502) is clamped into the circular baffles (604) on the two sides of the upper limiting gear (602), one end of the second linkage gear (503) is clamped into the circular baffles (604) on the two sides of the lower limiting gear (603), and the limiting block (2012) is further attached to the circular baffle (604) on the bottom side of the upper limiting gear (602).