CN217634057U - Large-caliber one-way check valve for nuclear power station - Google Patents
Large-caliber one-way check valve for nuclear power station Download PDFInfo
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- CN217634057U CN217634057U CN202221241257.2U CN202221241257U CN217634057U CN 217634057 U CN217634057 U CN 217634057U CN 202221241257 U CN202221241257 U CN 202221241257U CN 217634057 U CN217634057 U CN 217634057U
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Abstract
The utility model relates to the technical field of valves, a nuclear power station is with heavy-calibre check valve is disclosed, which comprises a valve body, the both ends of valve body shaping aperture respectively increases the water inlet and the delivery port that set up, and the inner of water inlet is fixed with the disk seat, and the inboard of disk seat is equipped with the valve clack, the lower extreme fixed connection of valve clack and rocking arm, and the upper end and the pivot of rocking arm are fixed, and the pivot is equipped with elastic rotary reset mechanism. The caliber of the valve body is increased, and the flow of the whole water system can be effectively increased; meanwhile, the valve clack is provided with an elastic rotary reset mechanism and a loading block, so that the non-return effect can be further improved, and the practicability of the check valve is improved.
Description
The technical field is as follows:
the utility model relates to the technical field of valves, concretely relates to nuclear power station is with one-way check valve of heavy-calibre.
Background art:
the check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. The valve body of the existing check valve is influenced by the structure and the opening mode of the valve clack, the size of the valve body is larger, but the caliber is smaller, so that the flow of the whole water system with the check valve is smaller, and the production cost is increased.
The utility model has the following contents:
the utility model aims to overcome the defects of the prior art, and provides a large-caliber one-way check valve for a nuclear power station, which increases the caliber of a valve body and can effectively increase the flow of the whole water system; meanwhile, the valve clack is provided with an elastic rotary reset mechanism and a load bearing block, so that the non-return effect can be further improved, and the practicability of the non-return valve is improved.
The utility model provides a technical problem's scheme is:
the large-diameter one-way check valve for the nuclear power station comprises a valve body, wherein a water inlet and a water outlet which are formed by increasing the diameter of a hole are formed in the two ends of the valve body respectively, a valve seat is fixed at the inner end of the water inlet, a valve clack is arranged on the inner side of the valve seat and fixedly connected with the lower end of a rocker arm, the upper end of the rocker arm is fixed with a rotating shaft, and an elastic rotary reset mechanism is arranged on the rotating shaft.
The lower end of the rocker arm is fixedly connected with a negative weight block through a screw.
The mass of the negative weight block has various specifications.
The valve clack comprises a valve clack body, and a rubber layer is coated on the outer wall of the valve clack body; two pairs of support lugs are formed on the back surface of the valve clack body, a pin shaft is fixed between each pair of support lugs, and the pin shaft is inserted and sleeved on the rocker arm.
A first slot is formed at the front end of the rotating shaft, and a spline shaft which is coaxial with the rotating shaft is formed at the rear end of the rotating shaft;
the elastic rotary reset mechanism comprises two rotary springs, and two ends of each rotary spring are respectively provided with a linear connecting rod which is turned inwards; two end linear connecting rods of one of the rotary springs are respectively inserted and sleeved in a first groove of the rotating shaft and a second groove of the first spring seat, the first spring seat is fixed in a limiting sleeve, and the limiting sleeve is inserted and fixed in a counter bore in the valve body;
the two-end linear connecting rods of the other rotary spring are respectively inserted and sleeved in a third groove of the connecting shaft and a fourth groove of the second spring seat, a splined hole is formed in one end, far away from the third groove, of the connecting shaft, the splined shaft is inserted and sleeved in the splined hole, the second spring seat is in threaded connection with an outer end threaded hole of a step through hole in the valve body, the second spring seat is pressed on a locking seat located on the outer side of the second spring seat, and the locking seat is in threaded connection with the threaded hole.
And the outer end of the second spring seat and the outer end of the locking seat are respectively provided with a hexagonal counter bore in a forming way.
The hole diameter of the small end hole of the step through hole is in clearance fit with the outer diameter of the connecting shaft, a sealing ring is sleeved on the outer wall of the connecting shaft, and the sealing ring is pressed against the inner wall of the small end hole of the step through hole;
the inner diameter of the large-end hole of the step through hole is in clearance fit with the outer diameter of the rotary spring.
The limiting sleeve is formed with a small-diameter hole matched with the rotating shaft and a large-diameter hole in clearance fit with the outer diameter of the rotary spring.
The utility model discloses an outstanding effect is:
compared with the prior art, the caliber of the valve body is increased, and the flow of the whole water system can be effectively increased; meanwhile, the valve clack is provided with an elastic rotary reset mechanism and a load bearing block, so that the non-return effect can be further improved, and the practicability of the non-return valve is improved.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view of FIG. 1 taken about A-A;
FIG. 3 is a partial enlarged view of FIG. 2 with respect to B;
FIG. 4 is an enlarged view of a portion of FIG. 2 about C;
fig. 5 is a schematic structural view of the revolving spring of the present invention.
The specific implementation mode is as follows:
in the embodiment, as shown in fig. 1 to 5, a large-diameter one-way check valve for a nuclear power plant comprises a valve body 1, a water inlet 11 and a water outlet 12 with enlarged apertures are respectively formed at two ends of the valve body 1, a valve seat 2 is fixed at the inner end of the water inlet 11, a valve flap 3 is arranged at the inner side of the valve seat 2, the valve flap 3 is fixedly connected with the lower end of a rocker arm 4, the upper end of the rocker arm 4 is fixed with a rotating shaft 5, and the rotating shaft 5 is provided with an elastic rotary reset mechanism 6.
Furthermore, a negative weight 7 is fixedly connected to the lower end of the rocker arm 4 through a screw.
Further, the mass of the negative weight 7 has various specifications.
Furthermore, the valve flap 3 comprises a valve flap body 31, and a rubber layer 32 is coated on the outer wall of the valve flap body 31; two pairs of support lugs 33 are formed on the back surface of the valve clack body 31, a pin shaft 34 is fixed between each pair of support lugs 33, and the pin shaft 34 is inserted and sleeved on the rocker arm 4.
Furthermore, a first open slot 51 is formed at the front end of the rotating shaft 5, and a spline shaft 52 coaxial with the rotating shaft 5 is formed at the rear end of the rotating shaft 5;
the elastic rotary reset mechanism 6 comprises two rotary springs 61, and two ends of each rotary spring 61 are respectively provided with an inward-turned linear connecting rod 611; two end linear connecting rods 611 of one of the rotary springs 61 are respectively inserted and sleeved in the first slot 51 of the rotating shaft 5 and the second slot 621 of the first spring seat 62, the first spring seat 62 is fixed in the limiting sleeve 63, and the limiting sleeve 63 is inserted and fixed in the counter bore 13 in the valve body 1;
the two end linear connecting rods 611 of the other rotary spring 61 are respectively inserted and sleeved in the third slot 641 of the connecting shaft 64 and the fourth slot 651 of the second spring seat 65, a spline hole 642 is formed at one end of the connecting shaft 64 away from the third slot 641, the spline shaft 52 is inserted and sleeved in the spline hole 642, the second spring seat 65 is screwed on the outer end threaded hole 15 of the step through hole 14 in the valve body 1, the second spring seat 65 is pressed on the locking seat 66 located at the outer side of the second spring seat, and the locking seat 66 is screwed on the threaded hole 15.
Furthermore, the outer end of the second spring seat 65 and the outer end of the locking seat 66 are respectively formed with a hexagonal counterbore.
Furthermore, the aperture of the small end hole of the stepped through hole 14 is in clearance fit with the outer diameter of the connecting shaft 64, a sealing ring 67 is sleeved on the outer wall of the connecting shaft 64, and the sealing ring 67 is pressed against the inner wall of the small end hole of the stepped through hole 14;
the inner diameter of the large end hole of the stepped through hole 14 is in clearance fit with the outer diameter of the rotary spring 61.
Further, the limit sleeve 63 is formed with a small-diameter hole 631 engaged with the rotation shaft 5 and a large-diameter hole 632 loosely engaged with the outer diameter of the swiveling spring 61.
The working principle is as follows: water enters from the water inlet 11, the valve clack 3 is pushed to the left by the pressure of the water, and the valve clack 3 rotates around the rotating shaft 5; the valve clack 3 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the rear end of the front rotary spring 6 to rotate, meanwhile, the rotating shaft 5 drives the connecting shaft to rotate through the spline shaft, the connecting shaft drives the front end of the other rotary spring to rotate, and the two rotary springs accumulate elastic potential energy; meanwhile, the valve clack 3 drives the rocker arm 4 to turn over, and the rocker arm 4 drives the negative weight block 7 to move upwards to improve the gravitational potential energy; when the pressure of the water inlet is reduced, the valve clack quickly rotates and resets under the action of the gravity of the two rotating springs and the negative weight block, and the non-return effect can be effectively achieved.
Finally, the above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant 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 protection scope of the present invention should be defined by the claims.
Claims (8)
1. The utility model provides a nuclear power station is with one-way check valve of heavy-calibre, includes valve body (1), its characterized in that: the water inlet (11) and the water outlet (12) with increased apertures are formed at two ends of the valve body (1), the valve seat (2) is fixed at the inner end of the water inlet (11), the valve clack (3) is arranged on the inner side of the valve seat (2), the valve clack (3) is fixedly connected with the lower end of the rocker arm (4), the upper end of the rocker arm (4) is fixed with the rotating shaft (5), and the rotating shaft (5) is provided with the elastic rotary reset mechanism (6).
2. The large-caliber one-way check valve for a nuclear power plant as claimed in claim 1, wherein: the lower end of the rocker arm (4) is fixedly connected with a negative weight block (7) through a screw.
3. The large-caliber one-way check valve for the nuclear power plant as recited in claim 2, wherein: the mass of the negative weight (7) has various specifications.
4. The large-caliber one-way check valve for a nuclear power plant as claimed in claim 1, wherein: the valve clack (3) comprises a valve clack body (31), and a rubber layer (32) is coated on the outer wall of the valve clack body (31); two pairs of support lugs (33) are formed on the back surface of the valve flap body (31), a pin shaft (34) is fixed between each pair of support lugs (33), and the pin shaft (34) is inserted and sleeved on the rocker arm (4).
5. The large-caliber one-way check valve for the nuclear power plant as recited in claim 1, wherein: a first groove (51) is formed at the front end of the rotating shaft (5), and a spline shaft (52) coaxial with the rotating shaft is formed at the rear end of the rotating shaft (5);
the elastic rotary reset mechanism (6) comprises two rotary springs (61), and two ends of each rotary spring (61) are respectively provided with an inward-turned linear connecting rod (611); two end linear connecting rods (611) of one rotary spring (61) are respectively inserted and sleeved in a first groove (51) of the rotating shaft (5) and a second groove (621) of a first spring seat (62), the first spring seat (62) is fixed in a limiting sleeve (63), and the limiting sleeve (63) is inserted and fixed in a counter bore (13) in the valve body (1);
two end linear connecting rods (611) of the other rotary spring (61) are respectively inserted and sleeved in a third groove (641) of the connecting shaft (64) and a fourth groove (651) of the second spring seat (65), a spline hole (642) is formed in one end, away from the third groove (641), of the connecting shaft (64), the spline shaft (52) is inserted and sleeved in the spline hole (642), the second spring seat (65) is in threaded connection with an outer end threaded hole (15) of the step through hole (14) in the valve body (1), the second spring seat (65) is pressed against the locking seat (66) located on the outer side of the second spring seat, and the locking seat (66) is in threaded connection with the threaded hole (15).
6. The large-caliber one-way check valve for the nuclear power plant as recited in claim 5, wherein: and hexagonal counter bores are respectively formed at the outer end of the second spring seat (65) and the outer end of the locking seat (66).
7. The large-caliber one-way check valve for the nuclear power plant as recited in claim 5, wherein: the aperture of the small end hole of the step through hole (14) is in clearance fit with the outer diameter of the connecting shaft (64), a sealing ring (67) is sleeved on the outer wall of the connecting shaft (64), and the sealing ring (67) is pressed against the inner wall of the small end hole of the step through hole (14);
the inner diameter of the large-end hole of the step through hole (14) is in clearance fit with the outer diameter of the rotary spring (61).
8. The large-caliber one-way check valve for the nuclear power plant as recited in claim 5, wherein: the limiting sleeve (63) is provided with a small-diameter hole (631) matched with the rotating shaft (5) and a large-diameter hole (632) in clearance fit with the outer diameter of the rotary spring (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221241257.2U CN217634057U (en) | 2022-05-23 | 2022-05-23 | Large-caliber one-way check valve for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221241257.2U CN217634057U (en) | 2022-05-23 | 2022-05-23 | Large-caliber one-way check valve for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217634057U true CN217634057U (en) | 2022-10-21 |
Family
ID=83655421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221241257.2U Active CN217634057U (en) | 2022-05-23 | 2022-05-23 | Large-caliber one-way check valve for nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217634057U (en) |
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2022
- 2022-05-23 CN CN202221241257.2U patent/CN217634057U/en active Active
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