Integrated two-way sealing DBB duplex three-way ball valve

Abstract

The utility model relates to the technical field of ball valves, and discloses an integrated two-way sealing DBB duplex three-way ball valve which comprises a first inlet switching valve, a first DBB shut-off valve, a second DBB shut-off valve, a pressure balancing device, an operating handle, a drain valve and a second inlet switching valve. According to the utility model, the three-module integrated structure is adopted, the switching module is arranged in the middle, and the sealing DBB safety pressure relief modules are arranged at the two ends, so that the function that three valves form one group is realized, leakage points at the connecting part are reduced, the possibility of sealing leakage is reduced, the valve position indicating device and each valve in the valve group are respectively provided with a clear and visible valve position state indicating device, and the safety of the valve group is ensured. The integrated structural design provides convenience for later maintenance, the integrated structural design is compact, sealing leakage positions are reduced, the installation space is reduced, the overall weight is reduced, and operation is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to an integrated two-way sealed DBB double-connected three-way ball valve. Background Art

[0002] The fuel duplex filter is a filtering device used in the fuel system, which is designed to improve the purity of the fuel, reduce impurities and pollutants in the fuel, and thus protect the normal operation of the engine and the fuel system. Compared with the traditional single filter, the fuel duplex filter has higher filtering efficiency and longer service life. The fuel duplex filter usually consists of two filter units, which are installed in the fuel system in sequence to form a filtering cascade system. The fuel duplex filter can provide a more efficient fuel filtering effect by combining the two filtering levels of coarse filtration and fine filtration, protect the engine and the fuel system from damage by pollutants, extend its service life, and improve the reliability and economy of the vehicle. When the fuel duplex filter is in use, it needs to be opened and closed by a ball valve.

[0003] The existing ball valve for duplex filter is not easy to operate synchronously with the upper and lower valves, has no interlocking device to prevent misoperation, is prone to misoperation, has split connection, has many sealing leakage points and reduced safety performance. Therefore, an integrated two-way sealed DBB duplex three-way ball valve is proposed to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an integrated two-way sealed DBB double-connected three-way ball valve in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an integrated two-way sealed DBB double-connected three-way ball valve, including: a first inlet switching valve, a first DBB shut-off valve, a second DBB shut-off valve, a pressure balancing device, an operating handle, a discharge valve and a second inlet switching valve;

[0006] The first DBB shut-off valve is fixedly mounted on the first inlet switching valve, and the second DBB shut-off valve is fixedly mounted on the first inlet switching valve;

[0007] The operating handle is arranged between the first inlet switching valve and the second inlet switching valve;

[0008] The discharge valve is connected to the second DBB shut-off valve, and a pressure balancing device is fixedly installed on the second inlet switching valve. The setting of the pressure balancing device can reduce the opening and closing torque of the main inlet ball valve.

[0009] Preferably, an indicator disk is fixedly mounted on the first DBB shut-off valve, and the indication status of the valve position can be conveniently checked through the setting of the indicator disk.

[0010] Preferably, one end of the operating handle is fixedly connected to the valve stem on the first inlet switching valve, and the other end of the operating handle is fixedly connected to the valve stem on the second inlet switching valve. Through the setting of the operating handle, the operating handle can be conveniently provided to open the first inlet switching valve and the second inlet switching valve at the same time.

[0011] Preferably, a connecting pipe is fixedly installed on the second DBB shut-off valve, and the discharge valve is fixedly installed on the connecting pipe. The fuel can be discharged conveniently through the arrangement of the discharge valve.

[0012] Preferably, an anti-misoperation device is fixedly installed on the second DBB shut-off valve, and the provision of the anti-misoperation device can prevent erroneous operations during use.

[0013] Preferably, there are two groups of the first DBB shut-off valve and the second DBB shut-off valve, which are respectively arranged on the first inlet switching valve and the second inlet switching valve. By arranging DBB safety pressure relief blocks at both ends of the switching valve, the function of three valves in one group is realized, the leakage points at the connection are reduced, and the possibility of sealing leakage is reduced.

[0014] The utility model adopts the above technical solution, which can bring the following beneficial effects:

[0015] The integrated two-way sealed DBB double three-way ball valve operates through the mutual cooperation between the first inlet switching valve, the first DBB shut-off valve, the second DBB shut-off valve, the pressure balancing device, the anti-misoperation device, the operating handle, the indicator disk, the discharge valve and the second inlet switching valve. It adopts an integrated structure designed as three blocks, with the switching block in the middle and the sealed DBB safety pressure relief blocks at both ends, so as to realize the function of three valves in one group, reduce the leakage points at the connection, reduce the possibility of sealing leakage, and the valve position indicating device. Each valve in the valve group is equipped with a clearly visible valve position status indicating device, and is designed with an anti-misoperation indicating interlocking device. The interlocking device can prevent misoperation during use. A pressure compensation device can be optionally installed to reduce the opening and closing torque of the main inlet ball valve. At the same time, the operating handle is used to connect the two inlet switching valves, so that the upper and lower valves of the fuel duplex filter can be operated synchronously. Its integrated structural design provides convenience for later maintenance, the integrated structural design is compact, the sealing leakage points are reduced, the installation space is reduced, the overall weight is reduced, and the operation is safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the bottom structure of the utility model;

[0018] Figure 3It is a schematic diagram of the side structure of the utility model.

[0019] In the figure: 1. First inlet switching valve; 2. First DBB shut-off valve; 3. Second DBB shut-off valve; 4. Pressure balancing device; 5. Anti-misoperation device; 6. Operating handle; 7. Indicator plate; 8. Discharge valve; 9. Second inlet switching valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0024] See also Figure 1-3An embodiment of the utility model is: an integrated two-way sealed DBB double three-way ball valve, comprising: a first inlet switching valve 1, a first DBB shut-off valve 2, a second DBB shut-off valve 3, a pressure balancing device 4, an operating handle 6, a discharge valve 8 and a second inlet switching valve 9. By adopting an integrated structural design, the structure is compact, the sealing leakage is reduced, the installation space is reduced, the overall weight is reduced, and the operation is safer and more reliable;

[0025] The first DBB shut-off valve 2 is fixedly mounted on the first inlet switching valve 1 , and the second DBB shut-off valve 3 is fixedly mounted on the first inlet switching valve 1 ;

[0026] The operating handle 6 is arranged between the first inlet switching valve 1 and the second inlet switching valve 9;

[0027] The discharge valve 8 is connected to the second DBB shut-off valve 3 , and a pressure balancing device 4 is fixedly installed on the second inlet switching valve 9 . The setting of the pressure balancing device 4 can reduce the opening and closing torque of the main inlet ball valve.

[0028] By adopting an integrated structure designed with three blocks, the middle is a switching block, and the two ends are sealed DBB safety pressure relief blocks, the function of three valves in one group is realized, the leakage points at the connection are reduced, and the possibility of sealing leakage is reduced. The valve position indicator device, each valve in the valve group is equipped with a clearly visible valve position status indicator, and is designed with an anti-misoperation indication interlocking device. The interlocking device can prevent misoperation during use. The pressure compensation device can be optionally installed to reduce the opening and closing torque of the main inlet ball valve. At the same time, the operating handle 6 is used to connect the two inlet switching valves to realize the synchronous operation of the upper and lower valves of the fuel duplex filter. Its integrated structural design provides convenience for later maintenance.

[0029] An indicator disk 7 is fixedly mounted on the first DBB shut-off valve 2, and the indicating status of the valve position can be conveniently checked through the setting of the indicator disk 7.

[0030] One end of the operating handle 6 is fixedly connected to the valve stem on the first inlet switching valve 1, and the other end of the operating handle 6 is fixedly connected to the valve stem on the second inlet switching valve 9. Through the setting of the operating handle 6, the operating handle 6 can be conveniently provided to open the first inlet switching valve 1 and the second inlet switching valve 9 at the same time.

[0031] A connecting pipe is fixedly installed on the second DBB shut-off valve 3 , and a discharge valve 8 is fixedly installed on the connecting pipe. The setting of the discharge valve 8 can facilitate the discharge of fuel.

[0032] The second DBB shut-off valve 3 is fixedly provided with an anti-misoperation device 5 , and the anti-misoperation device 5 can prevent erroneous operation during use.

[0033] There are two groups of first DBB shut-off valves 2 and second DBB shut-off valves 3, which are respectively arranged on the first inlet switching valve 1 and the second inlet switching valve 9. By arranging DBB safety pressure relief blocks at both ends of the switching valve, the function of three valves in one group is realized, the leakage points at the connection are reduced, and the possibility of sealing leakage is reduced.

[0034] Working principle: Install the integrated two-way sealed DBB duplex three-way ball valve on the fuel duplex filter. When reversing operation is required, first open the top pressure balancing device 4 to balance the pressure on both sides, observe the valve position status indicator disk 7, and operate the first DBB shut-off valve 2, the switching valve, and the second DBB shut-off valve 3 in sequence (the factory default design is counterclockwise operation to switch on the right and clockwise operation to switch on the left). After the switching operation is completed, close the compensation valve and drain the pressure of the valve at the opposite end after the switching. The switching is completed. The safe switching operation can be completed in just a few simple steps. The integrated structure is also much simpler in terms of later maintenance. The valve core, valve seat, and sealing gasket are universally compatible and can be used interchangeably. A complete set of sealing components can be provided for replacement to facilitate later maintenance.

[0035] The utility model provides an integrated two-way sealed DBB double three-way ball valve. There are many methods and ways to implement the technical solution. The above is only the preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications should also be regarded as the protection scope of the utility model. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. An integrated two-way sealed DBB double three-way ball valve, characterized in that: include: A first inlet switching valve (1), a first DBB shut-off valve (2), a second DBB shut-off valve (3), a pressure balancing device (4), an operating handle (6), a discharge valve (8) and a second inlet switching valve (9); The first DBB shut-off valve (2) is fixedly mounted on the first inlet switching valve (1), and the second DBB shut-off valve (3) is fixedly mounted on the first inlet switching valve (1); The operating handle (6) is arranged between the first inlet switching valve (1) and the second inlet switching valve (9); The discharge valve (8) is connected to the second DBB shut-off valve (3), and a pressure balancing device (4) is fixedly mounted on the second inlet switching valve (9).

2. The integrated two-way sealed DBB double three-way ball valve according to claim 1, characterized in that: An indicator disk (7) is fixedly mounted on the first DBB shut-off valve (2).

3. The integrated two-way sealed DBB double-connected three-way ball valve according to claim 1, characterized in that: One end of the operating handle (6) is fixedly connected to the valve stem on the first inlet switching valve (1), and the other end of the operating handle (6) is fixedly connected to the valve stem on the second inlet switching valve (9).

4. The integrated two-way sealed DBB double three-way ball valve according to claim 1, characterized in that: A connecting pipe is fixedly mounted on the second DBB shut-off valve (3), and the discharge valve (8) is fixedly mounted on the connecting pipe.

5. The integrated two-way sealed DBB double three-way ball valve according to claim 1, characterized in that: The second DBB shut-off valve (3) is fixedly provided with an anti-misoperation device (5).

6. The integrated two-way sealed DBB double three-way ball valve according to claim 1, characterized in that: There are two sets of the first DBB shut-off valve (2) and the second DBB shut-off valve (3), which are respectively arranged on the first inlet switching valve (1) and the second inlet switching valve (9).

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