CN113202957A - Axial flow type check valve - Google Patents
Axial flow type check valve Download PDFInfo
- Publication number
- CN113202957A CN113202957A CN202110532419.1A CN202110532419A CN113202957A CN 113202957 A CN113202957 A CN 113202957A CN 202110532419 A CN202110532419 A CN 202110532419A CN 113202957 A CN113202957 A CN 113202957A
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- Prior art keywords
- valve
- block
- buffer
- mounting
- rod
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
Abstract
The invention relates to an axial flow check valve, which comprises a valve body, a valve core cylinder, a valve clack and a buffer component, wherein the valve core cylinder is arranged on the valve body; a valve cavity is arranged in the valve body, an inlet pipe communicated with the valve cavity is arranged on the right side of the valve body, and an outlet pipe communicated with the valve cavity is arranged on the left side of the valve body; the middle part of the inner side wall of the valve cavity is provided with an installation plate; the lower end of the mounting plate is horizontally provided with a valve core cylinder with an opening at the right end; a first through hole penetrating through the left end face of the valve core cylinder is horizontally formed in the left end face of the valve core cylinder; a first key groove is formed in the first through hole; one end of the valve clack extends leftwards to be provided with a valve core rod which is connected with the first through hole in a sliding mode, and the valve core rod is matched in the first through hole in a sliding mode through a first flat key; a first spring is arranged between the valve core cylinder and the valve clack and used for forcing the valve clack to move rightwards to close the inlet pipe; the buffer component is horizontally arranged on the upper side of the valve core cylinder and is fixedly connected to the right end face of the mounting plate; a round rod is horizontally arranged at the right part of the valve clack, and the axis of the round rod is vertical to the axis of the valve core rod; the buffering component is arranged in the valve body, so that water hammer can be prevented, impact is reduced, and the service life of the valve clack is prolonged; when the valve clack is completely closed, the buffer component is separated from the valve clack, the sealing of the valve clack is not affected, and the valve clack can be reliably closed and sealed.
Description
Technical Field
The invention belongs to the field of pipeline valves, and particularly relates to an axial-flow check valve.
Background
The axial flow type check valve has the characteristics of strong flow capacity, small flow resistance, no blockage in opening and closing, reliable sealing and the like, thereby being favored by engineering design. The axial flow check valves can be classified into a disc type and a disk type according to the structural form of the valve core. The working principle of the axial flow type check valve is as follows: the opening and closing of the flap is determined by the pressure difference between the inlet and outlet ends of the valve. When the pressure at the inlet end is greater than the sum of the pressure at the outlet end and the spring force, the valve flap opens. The following problems often appear in the use of current axial-flow check valve: in the closing process of the valve clack, the too high closing speed can cause the too large impact force of the sealing surface of the valve clack to the sealing surface of the valve seat, so that the sealing surface is easy to damage, the check valve cannot be effectively stopped, and the service life is reduced; meanwhile, when the check valve clack is closed quickly, water hammer is easy to generate, and the valve is damaged.
Disclosure of Invention
The invention aims to provide an axial flow type check valve which is simple in structure, can be closed slowly and can prevent water hammer.
In order to achieve the purpose, the invention provides the following technical scheme, which comprises a valve body, a valve core cylinder, a valve clack and a buffer assembly; a valve cavity is arranged in the valve body, an inlet pipe communicated with the valve cavity is arranged on the right side of the valve body, and an outlet pipe communicated with the valve cavity is arranged on the left side of the valve body; the middle part of the inner side wall of the valve cavity is provided with an installation plate; the lower end of the mounting plate is horizontally provided with a valve core cylinder with an opening at the right end; a first through hole penetrating through the left end face of the valve core cylinder is horizontally formed in the left end face of the valve core cylinder; a first key groove is formed in the first through hole; one end of the valve clack extends leftwards to be provided with a valve core rod which is connected with the first through hole in a sliding mode, and the valve core rod is matched in the first through hole in a sliding mode through a first flat key; a first spring is arranged between the valve core cylinder and the valve clack and used for forcing the valve clack to move rightwards to close the inlet pipe; the buffer component is horizontally arranged on the upper side of the valve core cylinder and is fixedly connected to the right end face of the mounting plate; the right part of the valve clack is provided with a round rod, and the axis of the round rod is vertical to the axis of the valve core rod.
When the valve clack completely opens the inlet pipe, the buffer component is connected with the round rod; when the valve clack moves from the fully-opened position to the closed position, the valve clack drives the buffer component to move, and the closing speed of the valve clack is reduced through the buffer component; when the valve flap fully closes the inlet tube, the damping assembly disengages from the round bar.
Preferably, the buffer assembly comprises a sleeve, a first mounting block, a driving block, a shaft rod, a buffer block and a second sliding block; a sleeve is arranged on the mounting plate along the horizontal direction; the first mounting block is connected in the sleeve in a sliding mode through a second flat key, one end of the tension spring is connected to the mounting plate, the other end of the tension spring is connected to the first mounting block, and the first mounting block is forced to move leftwards; a first mounting cavity is formed in the first mounting block; the driving block is arranged on the right side of the first mounting cavity, a first guide rod is arranged on the driving block in a leftward extending mode, the first guide rod is in sliding fit in the first mounting cavity through a third flat key, and a first sliding block in sliding connection with the inner wall of the first mounting cavity is arranged on the left side of the first guide rod; a second spring for forcing the driving block to move rightwards is arranged on the left side of the first mounting cavity; a toggle groove with an upward opening is arranged on the driving block; the shaft lever is fixedly connected in the first mounting block, and the axis of the shaft lever is parallel to the axis of the round rod; the buffer block is rotatably connected to the shaft lever, the lower end of the buffer block is provided with a stirring block extending into the stirring groove, and the stirring groove is connected with the stirring block in a matched manner; a second mounting cavity is arranged in the first mounting block and on the upper side of the first mounting cavity, and a sliding groove is formed in the second mounting cavity; the second sliding block is connected in the second mounting cavity in a sliding mode, a second guide rod extends rightwards, and the axis of the second guide rod is intersected with the axis of the shaft lever; the second sliding block extends upwards to be provided with a third guide rod matched in the sliding groove, the upper end of the third guide rod extends to the upper part of the first mounting block, and the upper end of the third guide rod is provided with an unlocking rod along the horizontal direction; and a third spring is arranged at the left end of the second sliding block in the second mounting cavity and forces the second sliding block to move rightwards.
Preferably, the front end of the buffer block is provided with a locking notch with a downward opening, and the locking notch is used for being matched with the round rod to connect the valve clack and the buffer component together; the left end of the buffer block is provided with a rotation stopping groove, and when the second guide rod extends into the rotation stopping groove, the buffer block cannot rotate anticlockwise, so that the round rod cannot be separated from the lock opening; the upper part of the rotation stopping groove is provided with an auxiliary pushing surface, and when the second guide rod acts on the auxiliary pushing surface, the buffer block can rotate clockwise, so that the locking notch is buckled with the round rod; the buffer block upside is equipped with the locating surface, and when the second guide bar was used in the locating surface, the second guide bar can not promote the buffer block rotatory.
Preferably, when liquid is introduced into the inlet pipe, the valve clack is pushed by hydraulic pressure to compress the first spring to move leftwards, so that the inlet pipe is completely opened; when the valve clack moves to a position where the round rod is in contact with the right end of the driving block, the round rod pushes the driving block to compress the second spring to move leftwards, and the driving block acts on the buffer block through the toggle groove when moving leftwards, so that the buffer block rotates clockwise; when the valve clack displacement stopped, the buffer block rotated to the second guide bar and assisted the face position of contact that pushes away, and the second sliding block stretches out right under the third spring action, promoted the buffer block and continues to rotate along clockwise, and when the buffer block rotated to the groove of splining and the second guide bar was relative, the second guide bar stretched into in the groove of splining, and the buffer block will not rotate, and the round bar lies in the lock mouth completely.
Preferably, when the liquid is stopped to be introduced into the inlet pipe, the valve clack is pushed to move rightwards by the pressure of the first spring and the outlet pipe, so that the round rod drives the first mounting block to move rightwards by overcoming the tension of the tension spring; when valve clack and first installation piece move to unlocking lever right-hand member contact valve body right-hand member, the valve body promotes the relative buffer block of second sliding block and moves left to the second guide bar breaks away from the groove of stalling, under the effect of second spring, the drive block moves right and promotes the buffer block and rotates along anticlockwise, makes the fore shaft break away from the round bar gradually, and then the valve clack can continue to move right and make the import pipe close completely, and first installation piece moves left under extension spring effort, until the buffering subassembly resets.
Compared with the prior art, the invention has the advantages that:
the invention is provided with the buffer component, when the valve clack is at the closing position, the buffer component and the valve clack are kept in a separation state, when the valve clack is opened in place, the valve clack is connected with the buffer component, and the buffer component plays a role of resistance buffer for the closing of the valve clack when the valve clack is from the opening position to the closing position, thereby preventing water hammer, reducing impact and prolonging the service life of the valve clack; when the valve clack is completely closed, the buffer component is separated from the valve clack, the sealing of the valve clack is not affected, and the valve clack can be reliably closed and sealed.
Drawings
FIG. 1 is a schematic view of the open state of the present invention;
FIG. 2 is a schematic view of a buffer device according to the present invention in a disengaged state;
FIG. 3 is a close-up schematic of the present invention;
FIG. 4 is an enlarged view of a portion of the area A of the present invention;
FIG. 5 is a partial enlarged view of the area B of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1-5, is a preferred embodiment of the present invention.
An axial flow type check valve comprises a valve body 1, a valve core barrel 2, a valve clack 3 and a buffer component 4; a valve cavity 11 is arranged in the valve body 1, an inlet pipe 12 communicated with the valve cavity 11 is arranged on the right side of the valve body 1, and an outlet pipe 13 communicated with the valve cavity 11 is arranged on the left side of the valve body 1; the middle part of the inner side wall of the valve cavity 11 is provided with a mounting plate 14; the lower end of the mounting plate 14 is horizontally provided with a valve core barrel 2 with an opening at the right end; a first through hole penetrating through the valve core cylinder 2 is horizontally formed in the left end face of the valve core cylinder; a first key groove is formed in the first through hole; one end of the valve clack 3 extends leftwards to be provided with a valve core rod 31 which is connected with the first through hole in a sliding mode, and the valve core rod 31 is matched in the first through hole in a sliding mode through a first flat key 32; a first spring 21 is arranged between the valve core cylinder 2 and the valve clack 3, and the first spring 21 is used for forcing the valve clack 3 to move rightwards to close the inlet pipe 12; the buffer component 4 is horizontally arranged on the upper side of the valve core cylinder 2 and is connected to the right end face of the mounting plate 14; the right part of the valve clack 3 is provided with a round rod 33, and the axis of the round rod 33 is vertical to the axis of the valve core rod 31.
When the valve clack 3 completely opens the inlet pipe, the buffer component 4 is connected with the round rod 33; when the valve clack 3 moves from the fully-opened position to the closed position, the valve clack 3 drives the buffer component 4 to move, and the closing speed of the valve clack 3 is reduced through the buffer component 4; when the flap 3 closes the inlet pipe completely, the damping member 4 is disengaged from the round bar 33.
The buffer assembly 4 comprises a sleeve 41, a first mounting block 42, a driving block 43, a shaft lever 44, a buffer block 45 and a second sliding block 46; a sleeve 41 is arranged on the mounting plate 14 along the horizontal direction; the first mounting block 42 is slidably connected in the sleeve 41 through a second flat key 421, one end of the tension spring 141 is connected to the mounting plate 14, and the other end is connected to the first mounting block 42, so that the first mounting block 42 is forced to move leftwards; a first mounting cavity 423 is formed in the first mounting block 42; the driving block 43 is arranged on the right side of the first mounting cavity 423, the driving block 43 extends leftwards to be provided with a first guide rod 431, the first guide rod 431 is in sliding fit in the first mounting cavity 423 through a third flat key 4311, and the left side of the first guide rod 431 is provided with a first sliding block in sliding connection with the inner wall of the first mounting cavity 423; the left side of the first mounting cavity 423 is provided with a second spring 4231 for forcing the driving block 43 to move rightwards; a toggle groove 432 with an upward opening is arranged on the driving block 43; the shaft lever 44 is fixedly connected in the first mounting block 42, and the axis of the shaft lever 44 is parallel to the axis of the round rod 33; the buffer block 45 is rotatably connected to the shaft lever 44, the lower end of the buffer block 45 is provided with a toggle block 451 extending into the toggle groove 432, and the toggle groove 432 is connected with the toggle block 451 in a matching manner; a second mounting cavity 424 is formed in the first mounting block 42 on the upper side of the first mounting cavity 423, and a sliding groove 4241 is formed in the second mounting cavity 424; the second sliding block 46 is slidably connected in the second mounting cavity 424, a second guide rod 461 extends rightwards, and the axis of the second guide rod 461 intersects with the axis of the shaft lever 44; the second sliding block 46 is provided with a third guide rod 462 extending upwards and engaged in the sliding groove 4241, the upper end of the third guide rod 462 extends above the first mounting block 42, and the upper end of the third guide rod 462 is provided with an unlocking rod 4621 along the horizontal direction; and a third spring 4242 is arranged at the left end of the second sliding block 46 in the second mounting cavity 424, and the third spring 4242 forces the second sliding block 46 to move rightwards.
The front end of the buffer block 45 is provided with a locking notch 452 with a downward opening, and the locking notch 452 is used for being matched with the round rod 33 to connect the valve clack 3 and the buffer component 4 together; the left end of the buffer block 45 is provided with a rotation stopping groove 453, when the second guide rod 461 extends into the rotation stopping groove 453, the buffer block 45 cannot rotate anticlockwise, and the round rod 33 cannot be separated from the locking notch 452; the upper portion of the rotation stopping groove 453 is provided with an auxiliary pushing surface 454, when the second guiding rod 461 acts on the auxiliary pushing surface 454, the buffering block 45 can rotate clockwise, so that the locking notch 452 is buckled with the round rod 33; the buffer block 45 is provided with a positioning surface 455 at an upper side thereof, and when the second guide rod 461 acts on the positioning surface 455, the second guide rod 461 cannot push the buffer block 45 to rotate.
When liquid is introduced into the inlet pipe 12, the valve clack 3 is pushed by hydraulic pressure to compress the first spring 21 to move leftwards, so that the inlet pipe 12 is completely opened; when the valve clack 3 moves to a position where the round rod 33 is contacted with the right end of the driving block 43, the round rod 33 pushes the driving block 43 to compress the second spring 4231 to move leftwards, and when the driving block 43 moves leftwards, the driving block acts on the buffer block 45 through the toggle groove 432, so that the buffer block 45 rotates clockwise; when the displacement of the valve flap 3 stops, the buffer block 45 rotates to a position where the second guide rod 461 contacts with the auxiliary pushing surface 454, the second sliding block 46 extends rightward under the action of the third spring 4242 to push the buffer block 45 to continue rotating clockwise, when the buffer block 45 rotates to a position where the rotation stopping groove 453 is opposite to the second guide rod 461, the second guide rod 461 extends into the rotation stopping groove 453, the buffer block 45 cannot rotate, and the round rod 33 is completely located in the locking notch 452.
When the liquid stops flowing into the inlet pipe 12, the pressure of the first spring 21 and the outlet pipe 13 pushes the valve flap 3 to move rightwards, so that the round rod 33 drives the first mounting block 42 to move rightwards against the pulling force of the tension spring 141, and the speed of closing the valve flap 3 by moving rightwards is reduced by the resistance of the tension spring 141; when the valve flap 3 and the first mounting block 42 move rightwards until the right end of the unlocking rod 4621 contacts the valve body 1, the valve body 1 pushes the second sliding block 46 to move leftwards relative to the buffer block 45 until the second guide rod 461 disengages from the rotation stopping groove 453, under the action of the second spring 4231, the driving block 43 moves rightwards to push the buffer block 45 to rotate anticlockwise, so that the locking notch 452 gradually disengages from the round rod 33, the valve flap 3 can continue to move rightwards to completely close the inlet pipe 12, and the first mounting block 42 moves leftwards under the action of the tension spring 141 until the buffer assembly 4 resets.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An axial flow check valve characterized by: the axial flow type check valve comprises a valve body (1), a valve core cylinder (2), a valve clack (3) and a buffer component (4); a valve cavity (11) is arranged in the valve body (1), an inlet pipe (12) communicated with the valve cavity (11) is arranged on the right side of the valve body (1), and an outlet pipe (13) communicated with the valve cavity (11) is arranged on the left side of the valve body (1); the middle part of the inner side wall of the valve cavity (11) is provided with a mounting plate (14); the lower end of the mounting plate (14) is horizontally provided with a valve core barrel (2) with an opening at the right end; a first through hole is horizontally formed in the left end face of the valve core cylinder (2) in a penetrating mode; a first key groove is formed in the first through hole; one end of the valve clack (3) extends leftwards to be provided with a valve core rod (31) which is connected with the first through hole in a sliding mode, and the valve core rod (31) is matched in the first through hole in a sliding mode through a first flat key (32); a first spring (21) is arranged between the valve core cylinder (2) and the valve clack (3), and the first spring (21) is used for forcing the valve clack (3) to move rightwards to close the inlet pipe (12); the buffer component (4) is horizontally arranged on the upper side of the valve core cylinder (2) and is connected to the right end face of the mounting plate (14); a round rod (33) is arranged at the right part of the valve clack (3), and the axis of the round rod (33) is vertical to the axis of the valve core rod (31);
when the valve clack (3) completely opens the inlet pipe, the buffer component (4) is connected with the round rod (33); when the valve clack (3) moves from the full opening position to the closing position, the valve clack (3) drives the buffer component (4) to move, and the closing speed of the valve clack (3) is slowed down through the buffer component (4); when the valve clack (3) completely closes the inlet pipe, the buffer component (4) is separated from the round rod (33).
2. The axial flow check valve of claim 2, wherein: the buffer component (4) comprises a sleeve (41), a first mounting block (42), a driving block (43), a shaft lever (44), a buffer block (45) and a second sliding block (46); a sleeve (41) is arranged on the mounting plate (14) along the horizontal direction; the first mounting block (42) is connected in the sleeve (41) in a sliding mode through a second flat key (421), one end of the tension spring (141) is connected to the mounting plate (14), the other end of the tension spring is connected to the first mounting block (42), and the first mounting block (42) is forced to move leftwards; a first mounting cavity (423) is formed in the first mounting block (42); the driving block (43) is arranged on the right side of the first mounting cavity (423), a first guide rod (431) is arranged on the driving block (43) in a leftward extending mode, the first guide rod (431) is in sliding fit in the first mounting cavity (423) through a third flat key (4311), and a first sliding block in sliding connection with the inner wall of the first mounting cavity (423) is arranged on the left side of the first guide rod (431); a second spring (4231) for forcing the driving block (43) to move rightwards is arranged on the left side of the first mounting cavity (423); a toggle groove (432) with an upward opening is arranged on the driving block (43); the shaft lever (44) is fixedly connected in the first mounting block (42), and the axis of the shaft lever (44) is parallel to the axis of the round rod (33); the buffer block (45) is rotatably connected to the shaft lever (44), the lower end of the buffer block (45) is provided with a toggle block (451) extending into the toggle groove (432), and the toggle groove (432) is connected with the toggle block (451) in a matching manner; a second mounting cavity (424) is formed in the first mounting block (42) on the upper side of the first mounting cavity (423), and a sliding groove (4241) is formed in the second mounting cavity (424); the second sliding block (46) is connected in the second mounting cavity (424) in a sliding mode, a second guide rod (461) extends rightwards, and the axis of the second guide rod (461) is intersected with the axis of the shaft lever (44); the second sliding block (46) is upwards extended and provided with a third guide rod (462) matched in the sliding groove (4241), the upper end of the third guide rod (462) extends to the upper part of the first mounting block (42), and the upper end of the third guide rod (462) is provided with an unlocking rod (4621) along the horizontal direction; and a third spring (4242) is arranged at the left end of the second sliding block (46) in the second mounting cavity (424), and the second sliding block (46) is forced to move rightwards by the third spring (4242).
3. The axial flow check valve of claim 2, wherein the front end of the damping block (45) is provided with a locking notch (452) with a downward opening, the locking notch (452) is used for being matched with the round rod (33) to connect the valve clack (3) and the damping assembly (4) together; a rotation stopping groove (453) is formed in the left end of the buffer block (45), and when the second guide rod (461) extends into the rotation stopping groove (453), the buffer block (45) cannot rotate anticlockwise, so that the round rod (33) cannot be separated from the locking notch (452); an auxiliary pushing surface (454) is arranged at the upper part of the rotation stopping groove (453), and when the second guide rod (461) acts on the auxiliary pushing surface (454), the buffer block (45) can rotate clockwise, so that the locking notch (452) is buckled with the round rod (33); the upper side of the buffer block (45) is provided with a positioning surface (455), and when the second guide rod (461) acts on the positioning surface (455), the second guide rod (461) can not push the buffer block (45) to rotate.
4. The axial check valve according to claim 3, characterized in that when the inlet pipe (12) is filled with liquid, the hydraulic pressure pushes the flap (3) to compress the first spring 21 to move to the left, making the inlet pipe (12) fully open; when the valve clack (3) moves to a position where the round rod (33) is in contact with the right end of the driving block (43), the round rod (33) pushes the driving block (43) to compress the second spring (4231) to move leftwards, and when the driving block (43) moves leftwards, the driving block acts on the buffer block (45) through the toggle groove (432), so that the buffer block (45) rotates clockwise; when the valve clack (3) stops moving, the buffer block (45) rotates to the position where the second guide rod (461) is in contact with the auxiliary push surface (454), the second sliding block (46) extends rightwards under the action of the third spring (4242) to push the buffer block (45) to continue rotating clockwise, when the buffer block (45) rotates to the position where the rotation stopping groove (453) is opposite to the second guide rod (461), the second guide rod (461) extends into the rotation stopping groove (453), the buffer block (45) cannot rotate, and the round rod (33) is completely located in the locking opening (452).
5. The axial flow check valve of claim 3, wherein when the liquid in the inlet pipe (12) stops flowing, the pressure of the first spring 21 and the outlet pipe (13) pushes the valve flap (3) to move to the right, so that the round rod (33) drives the first mounting block (42) to move to the right against the pulling force of the tension spring (141); when the valve clack (3) and the first mounting block (42) move rightwards until the right end of the unlocking rod (4621) contacts the valve body (1), the valve body (1) pushes the second sliding block (46) to move leftwards relative to the buffer block (45) until the second guide rod (461) is separated from the rotation stopping groove (453), under the action of the second spring (4231), the driving block (43) moves rightwards to push the buffer block (45) to rotate along the anticlockwise direction, the locking opening (452) is gradually separated from the round rod (33), then the valve clack (3) can continue to move rightwards to completely close the inlet pipe (12), and the first mounting block (42) moves leftwards under the action of the tension spring (141) until the buffer component (4) resets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110532419.1A CN113202957A (en) | 2021-05-17 | 2021-05-17 | Axial flow type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110532419.1A CN113202957A (en) | 2021-05-17 | 2021-05-17 | Axial flow type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113202957A true CN113202957A (en) | 2021-08-03 |
Family
ID=77031470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110532419.1A Pending CN113202957A (en) | 2021-05-17 | 2021-05-17 | Axial flow type check valve |
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| CN (1) | CN113202957A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803490A (en) * | 2021-11-01 | 2021-12-17 | 陈功强 | Semi-ball valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161090A (en) * | 2020-09-20 | 2021-01-01 | 东莞海特帕沃液压科技有限公司 | Axial flow type check valve |
| CN112594250A (en) * | 2020-12-29 | 2021-04-02 | 符鹏 | Self-locking hydraulic cylinder |
| CN112594422A (en) * | 2020-12-29 | 2021-04-02 | 任林赟 | Axial flow type check valve |
| CN112728259A (en) * | 2020-12-29 | 2021-04-30 | 马金焕 | Quick connector |
-
2021
- 2021-05-17 CN CN202110532419.1A patent/CN113202957A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161090A (en) * | 2020-09-20 | 2021-01-01 | 东莞海特帕沃液压科技有限公司 | Axial flow type check valve |
| CN112594250A (en) * | 2020-12-29 | 2021-04-02 | 符鹏 | Self-locking hydraulic cylinder |
| CN112594422A (en) * | 2020-12-29 | 2021-04-02 | 任林赟 | Axial flow type check valve |
| CN112728259A (en) * | 2020-12-29 | 2021-04-30 | 马金焕 | Quick connector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803490A (en) * | 2021-11-01 | 2021-12-17 | 陈功强 | Semi-ball valve |
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