CN113933047A - Lifting check valve body test device - Google Patents
Lifting check valve body test device Download PDFInfo
- Publication number
- CN113933047A CN113933047A CN202111201579.4A CN202111201579A CN113933047A CN 113933047 A CN113933047 A CN 113933047A CN 202111201579 A CN202111201579 A CN 202111201579A CN 113933047 A CN113933047 A CN 113933047A
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- valve body
- hole
- piston
- spline
- base
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 230000000149 penetrating effect Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to the technical field of valves and discloses a lifting check valve body testing device which comprises a U-shaped testing base, wherein the left end of the testing base is provided with a valve body fixing mechanism for fixing a valve body, and the right end of the testing base is provided with a backwater water pressure adjusting mechanism; the valve body is characterized in that a valve clack is arranged on the inner end face of the water inlet of the valve body, and a valve clack pressure adjusting mechanism is arranged on the valve clack. It passes through the adjustable return water pressure size of return water pressure adjustment mechanism, through the adjustable pressure size to the valve clack of valve clack pressure adjustment mechanism to but experimental different operating modes, the convenient pressure spring that selects suitable through the hydraulic size of backward flow improves lift check valve's practicality.
Description
The technical field is as follows:
the invention relates to the technical field of valves, in particular to a lifting check valve body testing device.
Background art:
the lifting check valve is a valve which is used for preventing the medium from flowing backwards by automatically opening and closing a valve clack depending on the flowing of the medium. The existing lift check valve generally comprises a valve body and a valve clack, wherein the valve clack is pressed on an inner end face of a water inlet on the valve body, the valve clack can axially move in the up-down direction, and a pressure spring is arranged above the valve clack. However, the existing manufacturers can select the pressure spring at random, the elastic pressure of the pressure spring is high, the resistance of the lifting check valve for forward flow of water is easily increased, the elastic pressure of the pressure spring is low, the pressure on the valve clack is easily reduced, a good non-return effect cannot be achieved, and backflow and water leakage are easily caused.
The invention content is as follows:
the invention aims to overcome the defects of the prior art and provides a lifting check valve body testing device, which can adjust the return water pressure through a return water pressure adjusting mechanism and adjust the pressure on a valve clack through a valve clack pressure adjusting mechanism, so that different working conditions can be tested, a proper pressure spring can be conveniently selected according to the return water pressure, and the practicability of a lifting check valve is improved.
The scheme for solving the technical problems is as follows:
a lifting check valve body test device comprises a U-shaped test base, wherein a valve body fixing mechanism for fixing a valve body is arranged at the left end of the test base, and a backwater water pressure adjusting mechanism is arranged at the right end of the test base; the valve body is characterized in that a valve clack is arranged on the inner end face of the water inlet of the valve body, and a valve clack pressure adjusting mechanism is arranged on the valve clack.
A left flange is formed at the left end of the valve body, and a plurality of left connecting holes penetrating in the left-right direction are formed in the left flange;
the valve body fixing mechanism comprises two first corner cylinders which are arranged up and down, a first pull rod is fixed at the end part of a piston rod of each first corner cylinder, which extends into the corresponding left connecting hole, and a first circular pressing table which is eccentrically arranged with the first pull rod is fixed at the right end of the first pull rod;
the first pull rod and a piston rod of the first rotating angle cylinder are eccentrically arranged with the corresponding left connecting hole, and the first circular pressing platform is coaxially arranged with the corresponding left connecting hole when the valve body is not pressed;
a central positioning sleeve is formed on the left side wall of the test base, and the central positioning sleeve is inserted and sleeved at the outer end of the water inlet.
The outer end of the central positioning sleeve is provided with a flashlight which is obliquely arranged, the flashlight is opposite to the bottom of the inner cavity of the valve body, and the flashlight is fixed on the test base through a flashlight support.
A right flange is formed at the right end of the valve body, and a plurality of right connecting holes penetrating in the left-right direction are formed in the right flange;
a spline through hole penetrating in the left-right direction is formed at the right end of the test base;
the backwater water pressure adjusting mechanism comprises a spline supporting shaft inserted in the spline through hole, a connecting plate is fixed at the left end of the spline supporting shaft, two second corner cylinders which are arranged up and down are fixed on the connecting plate, a second pull rod is fixed at the end part of a piston rod of each second corner cylinder, which extends into the corresponding right connecting hole, and a second circular pressing table which is eccentrically arranged with the second pull rod is fixed at the left end of each second pull rod;
the piston rods of the second pull rod and the second corner cylinder are eccentrically arranged with the corresponding right connecting hole, and the second circular pressing table is coaxially arranged with the corresponding right connecting hole when the valve body is not pressed;
the connecting plate is pressed against the right flange, an insertion pipe is formed in the middle of the connecting plate, and the insertion pipe is inserted and sleeved at the outer end of the water outlet of the valve body;
a cylinder hole communicated with the insertion tube is formed in the spline support shaft, a piston matched with the cylinder hole is sleeved in the cylinder hole, a screw rod protruding towards the right is formed on the piston, the screw rod is in threaded connection with the middle of a large adjusting hand wheel, and the large adjusting hand wheel is rotatably connected to the right end of the spline support shaft through a bearing;
a water through hole penetrating in the left-right direction is formed in the screw rod, and a first pressure gauge is fixedly connected to the right end of the water through hole.
A first sealing ring is sleeved on the connecting plate and pressed against the outer end face of the water outlet;
a second sealing ring is sleeved on the outer wall of the piston and pressed against the inner wall of the cylinder hole;
the piston is formed with a plurality of guide holes which axially penetrate through, each guide hole is inserted and sleeved on a corresponding guide rod, two ends of each guide rod are respectively fixed on two support rings, and the support rings are fixed in cylinder holes.
An upper flange is formed at the upper end of the valve body, and a plurality of threaded through holes are formed in the upper flange;
the valve clack pressure adjusting mechanism comprises a base fixed on the upper flange through a plurality of screws, and a spline hole, a big end unthreaded hole and a small end unthreaded hole are sequentially formed in the middle of the base from top to bottom; a spline pressing table matched with the spline hole is sleeved in the spline hole, a pressure spring, a second piston and a third piston are sequentially arranged below the spline pressing table, the second piston and the third piston are inserted and sleeved in the big-end unthreaded hole, the pressure spring is clamped between the spline pressing table and the second piston, a downward convex pressure rod is formed on the third piston, and the pressure rod penetrates through the lower extending end of the small-end unthreaded hole and is fixedly connected with the valve clack;
the second piston, the third piston and the large-end unthreaded hole enclose a hydraulic support cavity; the base is provided with a hydraulic channel, the lower end of the hydraulic channel is communicated with the hydraulic supporting cavity, the upper end of the base is formed with a pressure gauge connecting port communicated with the upper end of the hydraulic channel, and a second pressure gauge is fixedly connected to the pressure gauge connecting port; the hydraulic supporting cavity and the hydraulic channel are filled with hydraulic oil;
the spline pressing table is fixed at the lower end of the lifting screw, the upper end of the lifting screw is in threaded connection with a small adjusting hand wheel, and the small adjusting hand wheel is rotatably connected to the upper end of the base through a bearing.
And a third sealing ring is clamped between the base and the upper flange.
The base is provided with a water filling hole in a molding mode, the lower end of the water filling hole is communicated with the inner cavity of the valve body, and the upper end of the water filling hole is connected with a detachable plug.
The lower extreme of valve body presses on a supporting bench, and a supporting bench fixes the upper end at the supporting screw of vertical setting, and the lower extreme spiro union of supporting screw is on the supporting seat, and the bottom at experimental base is fixed to the supporting seat.
The invention has the following outstanding effects:
compared with the prior art, it is through the adjustable return water pressure size of return water pressure adjustment mechanism, through the adjustable pressure size to the valve clack of valve clack pressure adjustment mechanism to but experimental different operating modes, the convenient pressure spring that suits is selected through the hydraulic size of backward flow, improves lift check valve's practicality.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1 with respect to B;
fig. 4 is a partially enlarged view of fig. 1 about C.
The specific implementation mode is as follows:
in the embodiment, as shown in fig. 1 to 4, a lifting check valve body test device comprises a U-shaped test base 1, wherein a valve body fixing mechanism 2 for fixing a valve body 9 is arranged at the left end of the test base 1, and a return water pressure adjusting mechanism 3 is arranged at the right end of the test base 1; and a valve clack 4 is arranged on the inner end face of the water inlet 91 of the valve body 9, and the valve clack 4 is provided with a valve clack pressure adjusting mechanism 5.
Furthermore, a left flange 92 is formed at the left end of the valve body 9, and a plurality of left connecting holes 93 penetrating in the left-right direction are formed on the left flange 92;
the valve body fixing mechanism 2 comprises two first angle-rotating cylinders 21 which are arranged up and down, a first pull rod 22 is fixed at the end part of a piston rod of each first angle-rotating cylinder 21, which extends into the corresponding left connecting hole 93, and a first circular pressing table 23 which is eccentrically arranged with the first pull rod 22 is fixed at the right end of the first pull rod 22;
the first pull rod 22 and the piston rod of the first rotating angle cylinder 21 are eccentrically arranged with the corresponding left connecting hole 93, and the first circular pressing platform 23 is coaxially arranged with the corresponding left connecting hole 93 when the valve body 9 is not pressed;
a central positioning sleeve 11 is formed on the left side wall of the test base 1, and the central positioning sleeve 11 is inserted and sleeved at the outer end of the water inlet 91.
Furthermore, the outer end of the central positioning sleeve 11 is provided with an obliquely arranged flashlight 61, the flashlight 61 faces the bottom of the inner cavity of the valve body 9, and the flashlight 61 is fixed on the test base 1 through a flashlight support 62.
Furthermore, a right flange 94 is formed at the right end of the valve body 9, and a plurality of right connecting holes 95 penetrating in the left-right direction are formed on the right flange 94;
a spline through hole 12 penetrating in the left-right direction is formed at the right end of the test base 1;
the backwater water pressure adjusting mechanism 3 comprises a spline support shaft 31 inserted in the spline through hole 12, a connecting plate 32 is fixed at the left end of the spline support shaft 31, two second corner cylinders 33 which are arranged up and down are fixed on the connecting plate 32, a second pull rod 34 is fixed at the end part of a piston rod of each second corner cylinder 33 which extends into the corresponding right connecting hole 95, and a second circular pressing table 35 which is eccentrically arranged with the second pull rod 34 is fixed at the left end of the second pull rod 34;
the piston rods of the second pull rod 34 and the second corner cylinder 33 are eccentrically arranged with the corresponding right connecting hole 95, and the second circular pressing table 35 is coaxially arranged with the corresponding right connecting hole 95 when the valve body 9 is not pressed;
the connecting plate 32 is pressed against the right flange 94, an insertion pipe 321 is formed in the middle of the connecting plate 32, and the insertion pipe 321 is inserted and sleeved at the outer end of the water outlet 92 of the valve body 9;
a cylinder hole 311 communicated with the insertion pipe 321 is formed in the spline support shaft 31, a piston 36 matched with the cylinder hole 311 is sleeved in the cylinder hole 311, a screw 361 protruding to the right is formed on the piston 36, the screw 361 is screwed in the middle of the large adjusting hand wheel 37, and the large adjusting hand wheel 37 is rotatably connected to the right end of the spline support shaft 31 through a bearing;
a water through hole 362 penetrating in the left-right direction is formed on the screw 361, and a first pressure gauge 38 is fixedly connected to the right end of the water through hole 362.
Furthermore, a first sealing ring 63 is sleeved on the connecting plate 32, and the first sealing ring 63 presses against the outer end face of the water outlet 92;
a second sealing ring 64 is sleeved on the outer wall of the piston 36, and the second sealing ring 64 is pressed against the inner wall of the cylinder hole 311;
a plurality of guide holes 363 axially penetrate through the piston 36, each guide hole 363 is inserted into a corresponding guide rod 65, two ends of each guide rod 65 are respectively fixed on two support rings 66, and the support rings 66 are fixed in the cylinder holes 311.
Furthermore, an upper flange 96 is formed at the upper end of the valve body 9, and a plurality of threaded through holes 97 are formed on the upper flange 96;
the valve clack pressure adjusting mechanism 5 comprises a base 52 fixed on the upper flange 96 through a plurality of screws 51, and a spline hole 521, a large end unthreaded hole 522 and a small end unthreaded hole 523 are sequentially formed in the middle of the base 52 from top to bottom; a spline pressing table 53 matched with the spline hole 521 is sleeved in the spline hole 521, a pressure spring 54, a second piston 55 and a third piston 56 are sequentially arranged below the spline pressing table 53, the second piston 55 and the third piston 56 are inserted in the large-end unthreaded hole 522, the pressure spring 54 is clamped between the spline pressing table 53 and the second piston 55, a downward-protruding pressure rod 561 is formed on the third piston 56, and the lower extending end of the pressure rod 561, which penetrates through the small-end unthreaded hole 523, is fixedly connected with the valve flap 4;
the second piston 56, the third piston 56 and the large-end light hole 522 enclose a hydraulic support cavity 500; a hydraulic channel 524 is arranged on the base 52, the lower end of the hydraulic channel 524 is communicated with the hydraulic support cavity 500, a pressure gauge connecting port 525 communicated with the upper end of the hydraulic channel 524 is formed at the upper end of the base 52, and a second pressure gauge 57 is fixedly connected to the pressure gauge connecting port 525; the hydraulic support cavity 500 and the hydraulic channel 524 are filled with hydraulic oil;
the spline pressing table 53 is fixed at the lower end of the lifting screw 58, the upper end of the lifting screw 58 is screwed on the small adjusting hand wheel 59, and the small adjusting hand wheel 59 is rotatably connected at the upper end of the base 52 through a bearing.
Further, a third seal ring 67 is sandwiched between the base 52 and the upper flange 96.
Furthermore, a water filling hole 526 is formed in the base 52, the lower end of the water filling hole 526 is communicated with the inner cavity of the valve body 9, and the upper end of the water filling hole 526 is connected with a detachable plug 68.
More specifically, the lower end of the valve body 9 is pressed against the support base 71, the support base 71 is fixed to the upper end of a vertically arranged support screw 72, the lower end of the support screw 72 is screwed to a support base 73, and the support base 73 is fixed to the bottom of the test base 1.
The working principle is as follows: firstly, a left connecting hole 93 on a left flange 92 of the valve body 9 passes through the corresponding first circular pressing platform 23, and the outer end of a water inlet 91 is inserted and sleeved on the central positioning sleeve 11; then the spline support shaft 31 is moved rightwards, the spline support shaft 31 drives the connecting plate 32 to move leftwards, the connecting plate 32 drives the second circular pressing table 35 to move leftwards through the second corner cylinder 33 and penetrates through the right connecting hole 95 in the right flange 94, and the insertion pipe 321 is inserted and sleeved at the outer end of the water outlet 92 of the valve body 9;
secondly, the piston rod of the first angle-rotating cylinder 21 rotates 90 degrees and contracts so as to drive the first circular pressing table 23 to rotate 90 degrees and press against the left flange 92 through the first pull rod 22, and the left flange 92 presses against the left end of the test base 1 so as to fix the valve body 9; then the piston rod of the second corner cylinder 33 rotates 90 degrees and contracts, so that the second pull rod 34 drives the second circular pressing table 35 to rotate 90 degrees and press against the right flange 92, and the connecting plate 32 presses against the right flange to play a role in sealing;
thirdly, the base 52 is fixed on the upper flange 96 through the screw 51, then the small adjusting hand wheel 59 is rotated, the small adjusting hand wheel 59 drives the lifting screw 58 to move downwards, the lifting screw 58 drives the spline pressing platform 53 to move downwards, the spline pressing platform 53 drives the third piston 56 to move downwards through the pressure spring 54 and the second piston 55, and the third piston 56 drives the valve flap 4 to move downwards and is pressed on the inner end face of the water inlet 91; then, the cavity of the valve clack 4 and the water outlet part is filled with water through the water filling hole 526, and after the cavity is filled with water, the plug 68 is fixed on the water filling hole 526;
fourthly, the small adjusting hand wheel 59 is continuously rotated, the small adjusting hand wheel 59 drives the lifting screw 58 to move downwards, the lifting screw 58 drives the spline pressing table 53 to move downwards, the pressure spring 54 is pressed when the spline pressing table 53 moves downwards, the pressure spring 54 increases the pressure on the second piston 55, the pressure of hydraulic oil in the hydraulic supporting cavity 500 and the hydraulic channel 524 is increased, the pressure can be visually seen through the second pressure gauge 57, so that the pressure on the valve clack of the third piston is indirectly obtained, and when the required pressure is adjusted, the small adjusting hand wheel 59 stops rotating;
then, the large adjusting hand wheel 37 is rotated, the large adjusting hand wheel 37 drives the screw 361 to move leftwards, the screw 361 drives the piston 36 to move leftwards, so that water in the cavities of the valve clack 4 and the water outlet part is pressurized, the first pressure gauge 38 is communicated with the cavities of the valve clack 4 and the water outlet part through the water through hole 362, so that the first pressure gauge 38 can visually see the water pressure, and the large adjusting hand wheel 37 stops rotating after the water pressure is adjusted to the corresponding pressure; then the flashlight 61 is opened, and whether water leakage occurs or not is formed by penetrating the bottom of the valve body;
then, the large adjusting hand wheel 37 can be continuously rotated, and the water in the cavity of the valve flap 4 and the water outlet part leaks out from the lower part of the valve flap 4 when the water pressure of the first pressure gauge 38 is observed;
fifthly, the small adjusting hand wheel 59 continues to rotate, the pressure to the valve clack is adjusted, then the large adjusting hand wheel 37 continues to rotate, different working conditions are tested, and therefore a proper pressure spring is selected, the adverse effect of overlarge or undersize elasticity of the pressure spring on the lifting check valve can be effectively reduced, and the practicability and the applicability of the lifting check valve are improved.
Finally, the above embodiments are only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (9)
1. The utility model provides a over-and-under type check valve body test device, is including test base (1) that is "U" style of calligraphy, its characterized in that: the left end of the test base (1) is provided with a valve body fixing mechanism (2) for fixing the valve body (9), and the right end of the test base (1) is provided with a backwater water pressure adjusting mechanism (3); the valve is characterized in that a valve clack (4) is arranged on the inner end face of a water inlet (91) of the valve body (9), and a valve clack pressure adjusting mechanism (5) is arranged on the valve clack (4).
2. The lift check valve body test device of claim 1, wherein: a left flange (92) is formed at the left end of the valve body (9), and a plurality of left connecting holes (93) penetrating in the left-right direction are formed in the left flange (92);
the valve body fixing mechanism (2) comprises two first corner cylinders (21) which are arranged up and down, a first pull rod (22) is fixed at the end part of a piston rod of each first corner cylinder (21) extending into the corresponding left connecting hole (93), and a first circular pressing table (23) which is eccentrically arranged with the first pull rod (22) is fixed at the right end of the first pull rod (22);
piston rods of the first pull rod (22) and the first rotating angle cylinder (21) are eccentrically arranged with the corresponding left connecting hole (93), and the first circular pressing table (23) is coaxially arranged with the corresponding left connecting hole (93) when the valve body (9) is not pressed;
a central positioning sleeve (11) is formed on the left side wall of the test base (1), and the central positioning sleeve (11) is inserted and sleeved at the outer end of the water inlet (91).
3. The lift check valve body test device of claim 2, wherein: the outer end of the central positioning sleeve (11) is provided with an obliquely arranged flashlight (61), the flashlight (61) is over against the bottom of the inner cavity of the valve body (9), and the flashlight (61) is fixed on the test base (1) through a flashlight support (62).
4. The lift check valve body test device of claim 1, wherein: a right flange (94) is formed at the right end of the valve body (9), and a plurality of right connecting holes (95) penetrating in the left-right direction are formed in the right flange (94);
a spline through hole (12) penetrating in the left-right direction is formed at the right end of the test base (1);
the backwater water pressure adjusting mechanism (3) comprises a spline supporting shaft (31) inserted in the spline through hole (12), a connecting plate (32) is fixed at the left end of the spline supporting shaft (31), two second corner cylinders (33) which are arranged up and down are fixed on the connecting plate (32), a second pull rod (34) is fixed at the end part of a piston rod of each second corner cylinder (33) extending into the corresponding right connecting hole (95), and a second circular pressing table (35) which is eccentrically arranged with the second pull rod is fixed at the left end of each second pull rod (34);
piston rods of the second pull rod (34) and the second corner cylinder (33) are eccentrically arranged with the corresponding right connecting hole (95), and the second circular pressing table (35) is coaxially arranged with the corresponding right connecting hole (95) when the valve body (9) is not pressed;
the connecting plate (32) is pressed against the right flange (94), an insertion pipe (321) is formed in the middle of the connecting plate (32), and the insertion pipe (321) is inserted and sleeved at the outer end of the water outlet (92) of the valve body (9);
a cylinder hole (311) communicated with the insertion pipe (321) is formed in the spline supporting shaft (31), a piston (36) matched with the cylinder hole (311) is sleeved in the cylinder hole (311), a screw rod (361) protruding rightwards is formed on the piston (36), the screw rod (361) is screwed in the middle of the large adjusting hand wheel (37), and the large adjusting hand wheel (37) is rotatably connected to the right end of the spline supporting shaft (31) through a bearing;
a water through hole (362) penetrating in the left-right direction is formed in the screw rod (361), and a first pressure gauge (38) is fixedly connected to the right end of the water through hole (362).
5. The lift check valve body test device of claim 4, wherein: a first sealing ring (63) is sleeved on the connecting plate (32), and the first sealing ring (63) is pressed against the outer end face of the water outlet (92);
a second sealing ring (64) is sleeved on the outer wall of the piston (36), and the second sealing ring (64) is pressed against the inner wall of the cylinder hole (311);
a plurality of guide holes (363) which axially penetrate through the piston (36) are formed, each guide hole (363) is inserted and sleeved on a corresponding guide rod (65), two ends of each guide rod (65) are respectively fixed on two support rings (66), and the support rings (66) are fixed in the cylinder holes (311).
6. The lift check valve body test device of claim 1, wherein: an upper flange (96) is formed at the upper end of the valve body (9), and a plurality of threaded through holes (97) are formed in the upper flange (96);
the valve clack pressure adjusting mechanism (5) comprises a base (52) fixed on an upper flange (96) through a plurality of screws (51), and a spline hole (521), a large-end unthreaded hole (522) and a small-end unthreaded hole (523) are sequentially formed in the middle of the base (52) from top to bottom; a spline pressing table (53) matched with the spline hole (521) is sleeved in the spline hole (521), a pressure spring (54), a second piston (55) and a third piston (56) are sequentially arranged below the spline pressing table (53), the second piston (55) and the third piston (56) are inserted in a large-end unthreaded hole (522), the pressure spring (54) is clamped between the spline pressing table (53) and the second piston (55), a downward-protruding pressure rod (561) is formed on the third piston (56), and the lower protruding end of the small-end unthreaded hole (523) penetrates through the pressure rod (561) and is fixedly connected with the valve flap (4);
the second piston (56), the third piston (56) and the large-end unthreaded hole (522) enclose a hydraulic support cavity (500); a hydraulic channel (524) is arranged on the base (52), the lower end of the hydraulic channel (524) is communicated with the hydraulic support cavity (500), a pressure gauge connecting port (525) communicated with the upper end of the hydraulic channel (524) is formed at the upper end of the base (52), and a second pressure gauge (57) is fixedly connected to the pressure gauge connecting port (525); the hydraulic supporting cavity (500) and the hydraulic channel (524) are filled with hydraulic oil;
the spline pressing table (53) is fixed at the lower end of the lifting screw rod (58), the upper end of the lifting screw rod (58) is in threaded connection with the small adjusting hand wheel (59), and the small adjusting hand wheel (59) is rotatably connected to the upper end of the base (52) through a bearing.
7. The lift check valve body test device of claim 6, wherein: a third sealing ring (67) is clamped between the base (52) and the upper flange (96).
8. The lift check valve body test device of claim 6, wherein: the base (52) is provided with a water filling hole (526), the lower end of the water filling hole (526) is communicated with the inner cavity of the valve body (9), and the upper end of the water filling hole (526) is connected with a detachable plug (68).
9. The lift check valve body test device of claim 1, wherein: the lower end of the valve body (9) is pressed against the support platform (71), the support platform (71) is fixed at the upper end of a vertically arranged support screw rod (72), the lower end of the support screw rod (72) is in threaded connection with the support base (73), and the support base (73) is fixed at the bottom of the test base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111201579.4A CN113933047B (en) | 2021-10-15 | 2021-10-15 | Lifting check valve body test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111201579.4A CN113933047B (en) | 2021-10-15 | 2021-10-15 | Lifting check valve body test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113933047A true CN113933047A (en) | 2022-01-14 |
| CN113933047B CN113933047B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111201579.4A Active CN113933047B (en) | 2021-10-15 | 2021-10-15 | Lifting check valve body test device |
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| CN (1) | CN113933047B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754947A (en) * | 2022-04-30 | 2022-07-15 | 台州市广易不锈钢阀门有限公司 | Valve air tightness detection device |
Citations (6)
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| Publication number | Publication date |
|---|---|
| CN113933047B (en) | 2023-11-14 |
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