Sealing valve for discharging

Abstract

The utility model discloses a sealing valve for discharging, which belongs to the technical field of valves and comprises a box body, one side of the box body is connected with a first reversing gear box, the outer side of the first reversing gear box is fixedly connected with a clamping electric device, and a second reversing gear box is arranged on the same side of the first reversing gear box. And the first reversing gear box is fixedly connected with the second reversing gear box through a connecting shaft. The utility model solves the problem that the lead liquid of the existing valve is easy to solidify on the valve to influence the sealing.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field relates to a seal valve for unloading. BACKGROUND

[0002] The transition box of nuclear power station is important feeding system, and there is a fuel rod in the pipeline. The fuel rod rotates around the center of the pipeline. Lead will drop no matter the valve is opened or closed. The melting point of lead is 327 DEG C. Therefore, lead should not be solidified on the sealing surface when the valve is sealed. The existing valve used is a ball valve. The ball valve can achieve zero leakage when the valve is opened. However, since the opening and closing of the ball valve is realized by rotating the ball, lead drops on the ball and cannot flow out. Therefore, lead solidifies on the ball, which affects the sealing of the valve and causes the valve to be difficult to open and close. In addition, the larger the pipeline is, the larger the diameter of the ball valve needs to be. However, the ball valve occupies a large volume, which further increases the manufacturing cost. SUMMARY

[0003] In order to achieve the above purpose, the utility model provides a seal valve for unloading, which solves the problem that lead liquid is easily solidified on the valve and affects the sealing.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of a seal valve for unloading, which comprises a box body. The box body is connected with a first reversing gear box on one side. The first reversing gear box is fixedly connected with a clamping electric device on the outside. A second reversing gear box is arranged on the same side of the first reversing gear box. The first reversing gear box and the second reversing gear box are fixedly connected through a connecting shaft.

[0005] Further, the box body is provided with a first transmission shaft and a second transmission shaft. One end of the first transmission shaft is in transmission connection with the first reversing gear box. The other end of the first transmission shaft is in transmission connection with a first elevator and a second elevator in sequence.

[0006] One end of the second transmission shaft is in transmission connection with the second reversing gear box. The other end of the second transmission shaft is in transmission connection with a third elevator and a fourth elevator in sequence.

[0007] Further, the first elevator, the second elevator, the third elevator, and the fourth elevator are fixedly connected with a compression ring at the lower part.

[0008] Further, the utility model further comprises a valve plate, which comprises:

[0009] A sealing ring is arranged at the lower end of the compression ring.

[0010] A crown-shaped plate is fixedly connected with the sealing ring.

[0011] A valve plate frame is arranged in the valve plate.

[0012] The spring plate is fixedly connected with the sealing ring at the upper end, and is fixedly connected with the bottom of the valve plate frame at the lower end.

[0013] Further, the valve plate frame is provided with a rack at the lower end.

[0014] Further, the valve plate is provided with a valve seat at the other side of the box body, and the valve seat is provided with a sealing ring at the upper side.

[0015] Further, the box body is connected with a turbine reducer at the other side, the turbine reducer is provided with a moving plate electric device at the upper end, the turbine reducer is provided with a gear shaft at one side, the gear shaft penetrates through the inside of the box body, and the gear shaft is provided with a gear.

[0016] Further, the valve plate is provided with a valve plate top wheel at the middle of the box body.

[0017] Further, the box body and the valve plate are fixedly provided with a moving plate position detector at the middle.

[0018] Further, the valve plate frame is fixedly provided with a position detector for top opening and clamping at the inside.

[0019] The utility model discloses beneficial effect is:

[0020] (1) the utility model provides a sealed valve for unloading, and the valve plate is provided with a crown type plate, in the valve closed state, because of the arc of the crown type plate, the liquid of lead is collected in the place far from the sealing surface, and because the through hole of the valve and the replacement form of the sealing are transverse movement, instead of rotating movement, no matter whether the lead liquid solidifies or not, it will not enter the sealing zone and affect the sealing, in addition, the structure length of the valve is less than that of the ball valve, which greatly shortens the overall space of the unloading valve field and saves a large amount of funds, in addition, the valve is provided with a moving plate position detector and a position detector for top opening and clamping, even if the valve fails and cannot correctly display the top opening and clamping state of the valve at this time, the position detector for top opening and clamping and the moving plate position detector can also correctly display the position of the valve at this time, which is convenient for maintenance and processing, and each part is easy to process, the cost is low compared with the ball valve, and various working conditions can be met.

[0021] (2) the sealed valve for unloading provided by the utility model realizes valve sealing by external force multi-point clamping, and when the valve is opened, the valve plate changes from the pressed state to the moving plate state, and the spring plate provides elastic kinetic energy, so that the valve sealing performance is more reliable than that of the gate valve and other valves, the elastic recovery process makes the sealing ring embedded on the valve seat far away from the valve plate, the sealing ring is not easy to scratch, and the service life of the valve is prolonged. DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings described in the following only represent some of the embodiments of the present application, and are not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] Figure 1 is a structural schematic view of the sealing valve for unloading of the present application.

[0024] Figure 2 is Figure 1 A-A direction schematic view.

[0025] Figure 3 is Figure 1 B direction schematic view of.

[0026] Figure 4 is Figure 1 C direction schematic view of.

[0027] Figure 5 is a valve plate schematic view of the present application.

[0028] Figure 6 is a transmission mechanism schematic view of the present application.

[0029] Figure 7 is a plate moving mechanism schematic view of the present application.

[0030] In the drawings, 1, box body; 2, first reversing gear box; 3, second reversing gear box; 4, clamping electric device; 5, connecting shaft; 601, first transmission shaft; 602, second transmission shaft; 701, first elevator; 702, second elevator; 703, third elevator; 704, fourth elevator; 8, compression ring; 9, valve plate; 901, sealing ring; 902, crown plate; 903, valve plate frame; 904, spring plate; 10, valve seat; 11, sealing ring; 12, turbine reducer; 13, gear shaft; 14, gear; 15, rack; 16, valve plate top wheel; 17, plate moving position detector; 18, clamping position detector; 19, plate moving electric device. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, and are not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0032] AsFigures 1-7 The utility model provides a sealing valve for unloading, one side of box 1 is connected with first reversing gear box 2, first reversing gear box 2 outside is fixedly connected with clamping electric device 4, the same side of first reversing gear box 2 sets up second reversing gear box 3, and first reversing gear box 2 is fixedly connected with second reversing gear box 3 through connecting shaft 5.

[0033] Box 1 inside sets up first transmission shaft 601, second transmission shaft 602, one end of first transmission shaft 601 is transmissionally connected with first reversing gear box 2, and the other end of first transmission shaft 601 is transmissionally connected with first elevator 701, second elevator 702 in proper order.

[0034] One end of second transmission shaft 602 is transmissionally connected with second reversing gear box 3, and the other end of second transmission shaft 602 is transmissionally connected with third elevator 703, fourth elevator 704 in proper order.

[0035] The lower part of first elevator 701, second elevator 702, third elevator 703, fourth elevator 704 is fixedly connected with compression ring 8, and the elevator drives compression ring 8 to move up and down when working.

[0036] Valve plate 9 is arranged at the lower end of compression ring 8.

[0037] The valve plate 9 comprises:

[0038] Sealing ring 901, sealing ring 901 is located at the lower end of compression ring 8, and compression ring 8 is pressed tightly against sealing ring 901 when the elevator is lowered;

[0039] Crown-shaped plate 902, the crown-shaped plate 902 is fixedly connected with the sealing ring 901;

[0040] Spring plate 904, the upper end of the spring plate 904 is fixedly connected with the sealing ring 901, and the lower end of the spring plate 904 is fixedly connected with the bottom of the valve plate frame 903.

[0041] The other side of the box 1 is connected with a turbine reducer 12, the turbine reducer 12 is provided with a moving plate electric device 19 at the upper end, one side of the turbine reducer 12 is provided with a gear shaft 13, the gear shaft 13 passes through the inside of the box 1, the gear shaft 13 is provided with a gear 14, and a plurality of valve plate top wheels 16 are arranged between the valve plate 9 and the box 1.

[0042] The inside of the box 1 is provided with a valve seat 10, and the valve seat 10 is provided with a sealing ring 11 on the upper side.

[0043] The box 1 and the valve plate 9 are fixedly provided with a moving plate position detector 17 between them.

[0044] The valve plate frame 903 is fixedly provided with a position detector 18 for opening and clamping.

[0045] The working principle of the sealing valve for discharging is as follows:

[0046] When the valve is closed, the plate-moving electric device 19 rotates to send the valve plate 9 above the valve seat 10, the clamping electric device 4 is actuated to drive the four elevators to descend through the first reversing gear box 2 and the second reversing gear box 3, when descending, the pressing ring 8 presses the sealing ring 901 in the valve plate 9, so that the valve plate 9 is pressed into the sealing ring 11 embedded in the valve seat 10, at this time, the valve is in a sealed state. The lead rod is above the valve plate 9, and the lead liquid drops from the lead rod into the crown-shaped plate 902 of the valve plate 9, and does not flow to the sealing surface to affect the sealing. At this time, the spring plate 904 of the valve plate 9 accumulates kinetic energy.

[0047] When the valve is opened, the clamping electric device 4 is reversed to drive the pressing ring 8 to move upwards, at this time, the spring plate 904 in the valve plate 9 lifts the sealing ring 901 of the valve plate 9, so that the sealing ring 11 is separated from the valve plate 9 by a distance, the plate-moving electric device 19 works, the gear shaft 13 drives the gear 14 to drive the rack 15, so that the valve plate 9 moves, after being positioned, the valve passage is unobstructed, and the lead rod can pass through the valve to feed the lower part.

[0048] Each embodiment in the specification is described in a related manner, and the same and similar parts between each embodiment can be referred to each other, and each embodiment mainly explains the difference from other embodiments.

[0049] The above only describes the preferred embodiments of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is included in the protection scope of the present application.

Claims

1. A sealing valve for unloading, comprising a housing (1), characterized in that, The first reversing gearbox (2) is connected to one side of the housing (1). The outside of the first reversing gearbox (2) is fixedly connected to the clamping electric device (4). The second reversing gearbox (3) is arranged on the same side as the first reversing gearbox (2). The first reversing gearbox (2) and the second reversing gearbox (3) are fixedly connected by a connecting shaft (5). It also includes a valve plate (9), which comprises: Sealing ring (901), the sealing ring (901) is located at the lower end of the pressure ring (8); Crown plate (902), crown plate (902) is fixedly connected to sealing ring (901); The valve plate frame (903) and the crown plate (902) are centrally fixed inside the valve plate frame (903); Spring plate (904), the upper end of spring plate (904) is fixedly connected to sealing ring (901), and the lower end of spring plate (904) is fixedly connected to the bottom of valve plate frame (903).

2. The sealing valve for unloading according to claim 1, characterized in that, The housing (1) is equipped with a first drive shaft (601) and a second drive shaft (602). One end of the first drive shaft (601) is connected to the first reversing gearbox (2), and the other end of the first drive shaft (601) is connected to the first elevator (701) and the second elevator (702) in sequence. One end of the second drive shaft (602) is connected to the second reversing gearbox (3), and the other end of the second drive shaft (602) is connected to the third elevator (703) and the fourth elevator (704) in sequence.

3. A sealing valve for unloading according to claim 2, characterized in that, The lower parts of the first elevator (701), the second elevator (702), the third elevator (703), and the fourth elevator (704) are fixedly connected to the pressure ring (8).

4. A sealing valve for unloading according to claim 1, characterized in that, A rack (15) is provided at the lower end of the valve plate frame (903).

5. A sealing valve for unloading according to claim 1, characterized in that, A valve seat (10) is provided on the inner side of the housing (1), and a sealing ring (11) is provided on the upper side of the valve seat (10).

6. A sealing valve for unloading according to claim 1, characterized in that, A turbine reducer (12) is connected to the other side of the housing (1). A plate-moving electric device (19) is provided at the upper end of the turbine reducer (12). A gear shaft (13) is provided on one side of the turbine reducer (12). The gear shaft (13) passes through the inside of the housing (1). A gear (14) is provided on the gear shaft (13).

7. A sealing valve for unloading according to claim 1, characterized in that, A valve plate top wheel (16) is provided between the valve plate (9) and the housing (1).

8. A sealing valve for unloading according to claim 1, characterized in that, A plate position detector (17) is fixedly installed between the box (1) and the valve plate (9).

9. A sealing valve for unloading according to claim 1, characterized in that, A position detector (18) for opening and clamping is fixedly installed inside the valve plate frame (903).

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