Flange type drain valve

Abstract

A flange type drain valve comprises a valve body, a sealing plate is arranged in an inner cavity of the valve body, an upper main shaft is connected to the upper portion of the side surface of the sealing plate, penetrates through the valve body and is connected with a butterfly handle, and the upper portion of a gear shaft is connected with a handle. The lower portion of the sealing plate is movably connected with the valve body through a lower spindle. A dry-type coupling valve connector shell is arranged on the rear side face of the valve body, the dry-type coupling valve connector shell and the valve body are of an integrated structure, a fixed lining plate is installed in the dry-type coupling valve connector shell, a valve element rod is movably installed on the fixed lining plate, a valve element is installed at the end, away from the sealing plate, of the valve element rod, and the valve element makes sealing contact with the inner wall of the dry-type coupling valve connector shell; the outer surface of the valve element rod is sleeved with a poppet spring, and the two ends of the poppet spring abut against the lining plate and the valve element respectively. The dry-type coupling valve connector overcomes the defects in the prior art, the dry-type coupling valve connector shell is integrally arranged on the rear side face of the valve body, and therefore it can be effectively guaranteed that enough space exists between the valve element rod and a sealing plate on the inlet side of the butterfly valve by means of the structural length of the valve body of the butterfly valve.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical field especially relates to valve technology, concretely is a flange type discharge valve. BACKGROUND

[0002] Dry coupling valve is widely used in mobile storage tank, ship, aircraft, spacecraft and other oil circuit, liquid circuit pipeline. Dry coupling valve is usually connected and installed with butterfly valve to realize material discharge.

[0003] In prior art, the connection and installation mode of butterfly valve and dry coupling valve is flange linkage or pipe thread linkage, the above linkage mode has the risk of leakage, and there is the problem of large size of combined parts, which cannot be used in compact structure and space limited working conditions.

[0004] For example, in the flange linkage mode, since there is the flange linking the butterfly valve and the dry coupling valve, when the male joint and the female joint of the dry coupling valve are inserted and connected, the female joint will interfere with the flange surface, so the theoretical engagement section of the dry coupling valve cannot be effectively shortened. Although the pipe thread connection mode can solve the problem of flange surface interference to some extent, the threaded variable diameter part still has excess length. SUMMARY

[0005] In view of the deficiencies of the prior art, the utility model provides a flange type discharge valve, which overcomes the deficiencies of the prior art, is reasonable in design, and by integrally arranging the dry coupling valve joint shell on the rear side of the valve body, the structure length of the valve body itself of the butterfly valve can be used to effectively ensure that the valve core rod and the sealing plate on the inlet side of the butterfly valve have sufficient space, thereby effectively avoiding the interference problem between the male joint of the dry coupling valve and the dry coupling valve joint shell when they are connected.

[0006] To achieve the above object, the utility model realizes by the following technical scheme:

[0007] A flange type discharge valve, comprising a valve body, an inner cavity of the valve body is provided with a sealing plate, an upper surface of a side surface of the sealing plate is fixedly connected with one end of an upper main shaft through a gear hole, the other end of the upper main shaft penetrates through the valve body and is connected with a butterfly handle through a gear shaft, an upper surface of the gear shaft is connected with one end of a handle through a fixing bolt, the other end of the handle is located below the butterfly handle and cooperates with the butterfly handle; one end of a lower main shaft is fixedly connected with a lower surface of the side surface of the sealing plate, the other end of the lower main shaft is movably connected with the valve body through a bottom bushing;

[0008] A dry coupling valve connector housing is provided on the rear side of the valve body. The dry coupling valve connector housing and the valve body are integrally structured. The inner cavity of the dry coupling valve connector housing is coaxial with and communicates with the inner cavity of the valve body. A fixed liner is fixedly installed in the inner cavity of the dry coupling valve connector housing. A valve core rod is movably installed in the middle of the fixed liner along the axial direction of the inner cavity of the valve body. A valve core is fixedly installed coaxially at the end of the valve core rod away from the sealing plate. The valve core is in sealing contact with the inner wall of the dry coupling valve connector housing and covers the inlet of the inner cavity of the dry coupling valve connector housing. A lifting spring is sleeved on the outer surface of the valve core rod. The two ends of the lifting spring abut against the liner and the valve core, respectively. The lifting spring biases the valve core toward the inlet of the inner cavity of the dry coupling valve connector housing.

[0009] Preferably, a sealing element is provided on the front surface of the sealing plate along the circumference; the sealing element is fixedly snapped onto the valve body, and a pressure plate is installed on the outer side of the sealing plate, the pressure plate being used to limit and fix the sealing element.

[0010] Preferably, a positioning pin opening is provided on the upper surface of the handle, a limiting groove is provided in the butterfly handle, a handle positioning pin is movably installed in the limiting groove, the upper end of the handle positioning pin passes through the positioning pin opening and is fixedly connected to an opening ring, a positioning block is fixedly installed on the lower end of the handle positioning pin, a handle spring is provided on the outer surface of the handle positioning pin, the handle spring is located between the positioning block and the limiting groove, a positioning packing plate is fixedly installed on the upper surface of the valve body, a plurality of positioning holes are provided on the surface of the positioning packing plate, and the positioning block matches the positioning holes.

[0011] Preferably, a guide bushing is fixedly installed in the middle of the liner, and the valve core rod passes through the guide bushing and is slidably connected to the guide bushing.

[0012] Preferably, a dust cover is installed at the end of the dry coupling valve connector housing away from the sealing plate.

[0013] This utility model provides a flanged discharge valve. It offers the following advantages: by integrally mounting the dry coupling valve connector housing on the rear side of the valve body, the structural length of the butterfly valve body itself can be utilized to effectively ensure sufficient space between the valve core rod and the sealing plate on the inlet side of the butterfly valve. This effectively avoids interference when the male connector of the dry coupling valve is mated with the dry coupling valve connector housing. Furthermore, the integrated valve body and dry coupling valve connector housing also effectively ensure the compactness of the overall structure, thereby effectively reducing the overall height of the discharge valve. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the accompanying drawings used in the description of the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at point DD;

[0017] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure at the FF point;

[0018] Explanation of the labels in the diagram:

[0019] 1. Valve body; 2. Sealing plate; 3. Upper spindle; 4. Gear shaft; 5. Butterfly handle; 6. Fixing bolt; 7. Handle; 8. Lower spindle; 9. Bottom bushing; 10. Dry coupling valve connector housing; 11. Fixing liner; 12. Valve core rod; 13. Valve core; 14. Lifting spring; 15. Seal; 16. Pressure plate; 17. Limiting groove; 18. Handle positioning pin; 19. Opening ring; 20. Positioning block; 21. Handle spring; 22. Positioning packing plate; 23. Positioning hole; 24. Guide bushing; 25. Dust cover. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0021] Example 1, as Figures 1-3 As shown, a flanged discharge valve includes a valve body 1. A sealing plate 2 is provided in the inner cavity of the valve body 1. One end of an upper main shaft 3 is fixedly connected to the upper side surface of the sealing plate 2 through a gear hole. The other end of the upper main shaft 3 passes through the valve body 1 and is connected to a butterfly handle 5 through a gear shaft 4. The upper part of the gear shaft 4 is connected to one end of a handle 7 through a fixing bolt 6. The other end of the handle 7 is located below the butterfly handle 5 and cooperates with the butterfly handle 5. One end of a lower main shaft 8 is fixedly connected to the lower side surface of the sealing plate 2. The other end of the lower main shaft 8 is movably connected to the valve body 1 through a bottom bushing 9.

[0022] A dry coupling valve connector housing 10 is provided on the rear side of the valve body 1. The dry coupling valve connector housing 10 and the valve body 1 are integrally structured. The inner cavity of the dry coupling valve connector housing 10 is coaxial with and connected to the inner cavity of the valve body 1. A fixed liner 11 is fixedly installed in the inner cavity of the dry coupling valve connector housing 10. A valve core rod 12 is movably installed in the middle of the fixed liner 11 along the axial direction of the inner cavity of the valve body 1. A valve core 13 is fixedly installed coaxially at the end of the valve core rod 12 away from the sealing plate 2. The valve core 13 is in sealing contact with the inner wall of the dry coupling valve connector housing 10 and covers the inlet of the inner cavity of the dry coupling valve connector housing 10. A lifting spring 14 is sleeved on the outer surface of the valve core rod 12. The two ends of the lifting spring 14 abut against the liner 11 and the valve core 13 respectively. The lifting spring 14 biases the valve core 13 toward the inlet of the inner cavity of the dry coupling valve connector housing 10.

[0023] Working principle:

[0024] In this embodiment, the front side of the valve body 1 can be mounted on the bottom of the tank truck via a mounting flange. In the non-operating state, the sealing plate 2 is in a closed state, and the valve core 13, through the elastic force of the lifting spring 14, abuts against the inner wall of the dry coupling valve connector housing 10, effectively achieving a sealing effect and ensuring that hazardous gases inside the tank truck do not leak out.

[0025] When it is necessary to open the valve, first connect the male connector of the dry coupling valve to the end of the dry coupling valve connector housing 10 away from the valve body 1, so that the dry coupling valve is in the docked state. Then rotate the handle of the dry coupling valve so that the valve core push block inside the dry coupling valve pushes the valve core 13 forward, so that the valve core 13 separates from the inner wall of the dry coupling valve connector housing 10, thereby forming a connected cavity between the inner cavity of the valve body of the dry coupling valve and the inner cavity of the dry coupling valve connector housing 10. At this time, the oil-gas coupling valve is in the fully open working state. Then, the butterfly handle 5 and the handle 7 are clamped together to rotate the butterfly handle 5. Through the fixed connection between the butterfly handle 5 and the gear shaft 4 and the upper main shaft 3, the upper main shaft 3 is driven to rotate, which in turn drives the sealing plate 2 at the lower end of the upper main shaft 3 to rotate, thereby opening the butterfly valve. This completes the opening of the entire discharge valve.

[0026] Similarly, when it is necessary to close the discharge valve, first rotate the handle of the dry coupling valve to retract the valve core push block inside the dry coupling valve to its initial position. This allows the valve core 13 to again press against the inner wall of the dry coupling valve connector housing 10 through the elastic force of the lifting spring 14, thereby achieving a sealing effect. Then, rotate the butterfly handle 5 to drive the sealing plate 2 to rotate and close. This completes the closing of the butterfly valve.

[0027] In this embodiment, by integrally mounting the dry coupling valve connector housing 10 on the rear side of the valve body 1, the structural length of the butterfly valve body 1 itself can be utilized to effectively ensure sufficient space between the valve core rod 12 and the sealing plate 2 on the inlet side of the butterfly valve. This effectively avoids interference when the male connector of the dry coupling valve is mated with the dry coupling valve connector housing 10. Furthermore, the integral mounting of the valve body 1 and the dry coupling valve connector housing 10 also effectively ensures the compactness of the overall structure, thereby effectively reducing the overall height of the discharge valve.

[0028] In Example 2, as a further preferred embodiment of Example 1, a sealing element 15 is provided along the circumference of the front surface of the sealing plate 2. The sealing element 15 is fixedly snapped onto the valve body 1, and a pressure plate 16 is installed on the outer side of the sealing plate 2. The pressure plate 16 is used to limit and fix the sealing element 15. The sealing element 15 achieves a sealing effect between the outer ring of the sealing plate 2 and the valve body 1. When installing the sealing element 15, it can be installed from the pressure side first, and then the pressure plate 16 can be installed on the outer side of the sealing plate 2. After the butterfly valve is installed with the corresponding flange, the pressure plate 16 can achieve the positioning effect of the sealing element 15. Similarly, when disassembly is required, the sealing element 15 can be removed simply by removing the pressure plate 16.

[0029] In embodiment three, as a further preferred embodiment one, a positioning pin opening is provided on the upper surface of the handle 7, a limiting groove 17 is provided in the butterfly handle 5, a handle positioning pin 18 is movably installed in the limiting groove 17, the upper end of the handle positioning pin 18 passes through the positioning pin opening and is fixedly connected to the opening ring 19, a positioning block 20 is fixedly installed on the lower end of the handle positioning pin 18, a handle spring 21 is provided on the outer surface of the handle positioning pin 18, the handle spring 21 is located between the positioning block 20 and the limiting groove 17, a positioning packing plate 22 is fixedly installed on the upper surface of the valve body 1, a plurality of positioning holes 23 are provided on the surface of the positioning packing plate 22, and the positioning block 20 matches the positioning holes 23.

[0030] When in use, when the butterfly handle 5 and the handle 7 are clamped together, the handle positioning pin 18 in the limiting groove 17 will be lifted, causing the positioning block 20 at the lower end of the handle positioning pin 18 to separate from the positioning hole 23. Then, the butterfly handle 5 is rotated to drive the upper main shaft 3 to rotate, which in turn drives the sealing plate 2 to rotate, thereby realizing the opening or closing of the butterfly valve. When it is rotated to the designated position, the handle 7 is released. Through the elastic action of the handle spring 21 on the outer surface of the handle positioning pin 18, the handle positioning pin 18 is driven to move downward, which causes the positioning block 20 to engage in the appropriate positioning hole 23, thereby achieving the positioning effect of the upper main shaft 3 and the sealing plate 2.

[0031] In Example 4, as a further preferred embodiment of Example 1, a guide bushing 24 is fixedly installed in the middle of the liner 11, and the valve core rod 12 passes through the guide bushing 24 and is slidably connected to the guide bushing 24. The guide bushing 24 effectively ensures the stability of the valve core rod 12 during movement.

[0032] In Example 5, as a further preferred embodiment of Example 1, a dust cover 25 is installed at the end of the dry coupling valve connector housing 10 away from the sealing plate 2. Therefore, in the non-operating state, the dust cover 25 can be closed onto the end of the dry coupling valve connector housing 10 to prevent dust from adhering to the surface of the valve core 13.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A flanged discharge valve, comprising a valve body (1), wherein a sealing plate (2) is provided in the inner cavity of the valve body (1), one end of an upper main shaft (3) is fixedly connected above the side surface of the sealing plate (2) through a gear hole, the other end of the upper main shaft (3) passes through the valve body (1) and is connected to a butterfly handle (5) through a gear shaft (4), one end of the gear shaft (4) is connected to a handle (7) above the gear shaft (4) through a fixing bolt (6), the other end of the handle (7) is located below the butterfly handle (5) and cooperates with the butterfly handle (5); one end of a lower main shaft (8) is fixedly connected below the side surface of the sealing plate (2), the other end of the lower main shaft (8) is movably connected to the valve body (1) through a bottom bushing (9); Its features are: A dry coupling valve connector housing (10) is provided on the rear side of the valve body (1). The dry coupling valve connector housing (10) and the valve body (1) are integrally formed. The inner cavity of the dry coupling valve connector housing (10) is coaxial with and connected to the inner cavity of the valve body (1). A fixing liner (11) is fixedly installed in the inner cavity of the dry coupling valve connector housing (10). A valve core rod (12) is movably installed in the middle of the fixing liner (11) along the axial direction of the inner cavity of the valve body (1). A valve core (13) is coaxially fixed at one end away from the sealing plate (2). The valve core (13) is in sealed contact with the inner wall of the dry coupling valve connector housing (10) and covers the inlet of the inner cavity of the dry coupling valve connector housing (10). A lifting spring (14) is sleeved on the outer surface of the valve core rod (12). The two ends of the lifting spring (14) abut against the liner (11) and the valve core (13) respectively. The lifting spring (14) biases the valve core (13) toward the inlet of the inner cavity of the dry coupling valve connector housing (10).

2. The flanged discharge valve according to claim 1, characterized in that: The sealing plate (2) has a sealing element (15) arranged along the circumference on the front surface; the sealing element (15) is fixedly snapped onto the valve body (1), and a pressure plate (16) is installed on the outside of the sealing plate (2), the pressure plate (16) is used to limit and fix the sealing element (15).

3. A flanged discharge valve according to claim 1, characterized in that: The upper surface of the handle (7) has a positioning pin opening, and the butterfly handle (5) has a limiting groove (17). The limiting groove (17) is movably installed with a handle positioning pin (18). The upper end of the handle positioning pin (18) passes through the positioning pin opening and is fixedly connected with an opening ring (19). The lower end of the handle positioning pin (18) is fixedly installed with a positioning block (20). The outer surface of the handle positioning pin (18) is provided with a handle spring (21). The handle spring (21) is located between the positioning block (20) and the limiting groove (17). The upper surface of the valve body (1) is fixedly installed with a positioning packing plate (22). The surface of the positioning packing plate (22) is provided with several positioning holes (23). The positioning block (20) matches the positioning holes (23).

4. A flanged discharge valve according to claim 1, characterized in that: A guide bushing (24) is fixedly installed in the middle of the liner (11), and the valve core rod (12) passes through the guide bushing (24) and is slidably connected to the guide bushing (24).

5. A flanged discharge valve according to claim 1, characterized in that: A dust cover (25) is installed at the end of the dry coupling valve connector housing (10) away from the sealing plate (2).

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