Conical mechanical valve and automatic dehydrator

Abstract

The present invention discloses a conical mechanical valve, which relates to the technical field of petrochemical equipment, and comprises: a valve body, a core shaft, a valve plug and a buoyancy sensing mechanism, wherein an inner sleeve is arranged in the valve body, a truncated cone-shaped water passage cavity is arranged in the inner sleeve, a first water outlet is arranged on the side wall of the inner sleeve corresponding to the water passage cavity, a second water outlet is opened on the side of the valve body, and the valve plug is fixedly arranged on the core shaft and sealedly connected; one end of the core shaft can pass through the water passage cavity, and there is a gap between the core shaft and the openings at both ends of the water passage cavity, the core shaft can move up and down in the water passage cavity and make the outer wall of the valve plug fit on the inner wall of the water passage cavity; the buoyancy sensing end of the buoyancy sensing mechanism is used to be arranged in a storage tank and sense the change of the water level in the storage tank and drive the core shaft to move up and down; the present invention also provides an automatic dehydrator, comprising the conical mechanical valve as described above, and the conical mechanical valve and the automatic dehydrator provided by the present invention have strong safety performance.

Description

Technical Field

[0001] The invention relates to the technical field of petrochemical equipment, in particular to a conical mechanical valve and an automatic dehydrator. Background Art

[0002] The automatic dehydrator for storage tanks is a new generation of products developed and designed according to the needs of dehydrating storage tanks in the current petrochemical industry. It is made of stainless steel and has the advantages of reasonable design, simple structure, large drainage volume, fast oil return speed, strong corrosion resistance, convenient use, safety and reliability. However, the valve switch of the drain port in the existing automatic dehydrator for storage tanks is mostly controlled by a solenoid valve, and a corresponding sensor is used to detect the type of liquid in the dehydrator tank and control the solenoid valve to open and close the drain port. Since petroleum is a flammable and explosive liquid, there are certain safety hazards when it is powered on. Therefore, a new type of valve is urgently needed to be used in the automatic dehydrator for storage tanks. Summary of the invention

[0003] The purpose of the present invention is to provide a conical mechanical valve and an automatic dehydrator to solve the problems existing in the above-mentioned prior art and improve the safety performance of the automatic dehydrator.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a conical mechanical valve, comprising: a valve body, a core shaft, a valve plug and a buoyancy sensing mechanism, wherein an inner sleeve is arranged in the valve body, a truncated cone-shaped water passage cavity is arranged in the inner sleeve, the large end and the small end of the water passage cavity are both open, a first water outlet is arranged on the side wall of the inner sleeve corresponding to the water passage cavity, a second water outlet is opened on the side of the valve body, and the second water outlet is communicated with the first water outlet; the outer shape of the valve plug is also truncated cone-shaped and matches the inner wall of the water passage cavity; the valve plug is fixedly arranged on the core shaft and connected to the The core shaft is sealed and connected; one end of the core shaft can pass through the water passage chamber, and there is a gap between the core shaft and the openings at both ends of the water passage chamber, the core shaft can move axially in the water passage chamber and make the outer wall of the valve plug fit on the inner wall of the water passage chamber, and the valve plug can open and close the first water outlet; the free end of the buoyancy sensing mechanism is rotatably connected to one end of the core shaft, and the buoyancy sensing end of the buoyancy sensing mechanism is used to be set in the storage tank and drive the core shaft to move up and down as the water level in the storage tank changes.

[0006] Preferably, a plurality of the first water outlets are evenly arranged on the side wall of the water passage chamber.

[0007] Preferably, an upper valve cover and a lower valve cover are respectively provided at the upper and lower ends of the valve body; the upper valve cover presses and fixes the inner sleeve and one end of the valve body, and the lower valve cover presses and fixes the inner sleeve and the other end of the valve body, and a plurality of connecting ears are provided on the upper valve cover and the lower valve cover, and each connecting ear on the upper valve cover is detachably fixedly connected to the connecting ears on the lower valve cover through a group of connecting parts, and openings are provided on the upper valve cover and the lower valve cover for passing water; the lower end of the core shaft passes through the lower valve cover.

[0008] Preferably, the lower valve cover and the upper valve cover are hollow valve covers.

[0009] Preferably, the buoyancy sensing mechanism comprises a float device and a connecting rod, the middle portion of the connecting rod is rotatably connected to the lower valve cover, and the two ends of the connecting rod are rotatably connected to the core shaft and the float device respectively.

[0010] Preferably, the float device comprises a float, a counterweight and a connecting rod, two ends of the connecting rod are respectively fixedly connected to the counterweight and the float, and the connecting rod is rotatably connected to the counterweight.

[0011] Preferably, a filler is provided in the float.

[0012] Preferably, the valve plug is made of fluororubber.

[0013] The present invention also provides an automatic dehydrator, comprising the conical mechanical valve as described above.

[0014] Compared with the prior art, the present invention has achieved the following technical effects:

[0015] The present invention provides a conical mechanical valve and an automatic dehydrator, wherein a buoyancy sensing mechanism utilizes buoyancy to detect the water level in a storage tank and drives a core shaft to move up and down, so that a valve plug on the core shaft opens and closes a first water outlet; the effect of automatic dehydration can be achieved without using electricity, thereby improving the safety performance of the automatic dehydrator; in addition, both the large end and the small end of the water passage chamber are open, so the upper and lower ends of the valve plug are always in contact with water and are subjected to a certain water pressure, and the resultant force of the water pressure to which the valve plug is subjected is relatively small, which facilitates the core shaft to drive the valve plug to move up and down, and the opening and closing of the conical valve is relatively stable and reliable; therefore, the conical mechanical valve and the automatic dehydrator provided by the present invention have good safety performance, are convenient for opening and closing the valve, and are relatively stable in opening and closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of the conical mechanical valve provided in Example 1;

[0018] Figure 2 A front view of the conical mechanical valve provided in the first embodiment without the buoyancy sensing mechanism;

[0019] Figure 3 for Figure 2 AA section view;

[0020] Figure 4 A top view of the inner sleeve and valve plug in the conical mechanical valve provided in the first embodiment;

[0021] Figure 5 for Figure 4 BB section view;

[0022] Figure 6 A schematic diagram of the structure of an inner sleeve in a conical mechanical valve provided in Example 1;

[0023] In the figure: 1-valve body, 2-second water outlet, 3-upper valve cover, 4-lower valve cover, 5-core shaft, 6-float, 7-connecting rod, 8-counterweight, 9-connecting rod, 10-inner sleeve, 11-first water outlet, 12-valve plug, 13-inner sleeve body, 14-upper valve core. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The purpose of the present invention is to provide a conical mechanical valve and an automatic dehydrator to solve the problems existing in the prior art and improve the safety performance of the automatic dehydrator.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Embodiment 1

[0028] This embodiment provides a conical mechanical valve, such as Figures 1 to 6 As shown, it comprises: a valve body 1, a core shaft 5, a valve plug 12 and a buoyancy sensing mechanism. An inner sleeve 10 is provided in the valve body 1. A truncated cone-shaped water passage cavity is provided in the inner sleeve 10. The large end and the small end of the water passage cavity are both open. A first water outlet 11 is provided on the side wall of the inner sleeve 10 corresponding to the water passage cavity. A second water outlet 2 is provided on the side of the valve body 1. The second water outlet 2 is communicated with the first water outlet 11. The shape of the valve plug 12 is also truncated cone-shaped and matches the inner wall of the water passage cavity. The valve plug 12 is fixedly arranged on the core shaft 5. One end of the core shaft 5 can pass through the water passage chamber, and there is a gap between the core shaft 5 and the openings at both ends of the water passage chamber, the core shaft 5 can move up and down in the water passage chamber and make the outer wall of the valve plug 12 fit on the inner wall of the water passage chamber, and the valve plug 12 can open and close the first water outlet 11; the free end of the buoyancy sensing mechanism is rotatably connected to one end of the core shaft 5, and the buoyancy sensing end of the buoyancy sensing mechanism is used to be set in the storage tank and sense the change of the water level in the storage tank and drive the core shaft 5 to move up and down;

[0029] The technical solution provided in the present application adopts a buoyancy sensing mechanism to detect the water level in the storage tank and drive the core shaft 5 to move up and down, so that the valve plug 12 on the core shaft 5 opens and closes the first water outlet 11; the effect of automatic dehydration can be achieved without using electricity, thereby improving the safety performance of the automatic dehydrator; in addition, the large end and the small end of the water chamber are both open, so the upper and lower ends of the valve plug 12 are always in contact with water and are subjected to a certain water pressure, and the resultant force of the water pressure to which the valve plug 12 is subjected is relatively small, which facilitates the core shaft 5 to drive the valve plug 12 to move up and down, and the conical valve is more stable in opening and closing; therefore, the conical mechanical valve and automatic dehydrator provided by the present invention have better safety performance, are easy to open and close the valve, and are more stable in opening and closing.

[0030] Furthermore, a plurality of first water outlets 11 are evenly arranged on the side wall of the water passage chamber, such as Figure 6 As shown, it is convenient for drainage and when the outer wall of the valve plug 12 is attached to the side wall of the water passage chamber, a plurality of first water outlets 11 are provided to evenly balance the external pressure exerted on the valve plug 12 , making it convenient for the valve plug 12 to open and close each first water outlet 11 .

[0031] Further, the edges of the upper and lower ends of the inner sleeve 10 are both provided with an annular flange from the opening edge of the inner sleeve in the direction away from the inner sleeve 10, and the two annular flanges can be pressed against the upper end surface and the lower end surface of the valve body 1 respectively, and a sealing ring is provided between the two annular flanges and the end surface of the valve body 1, and in order to facilitate the assembly of the device, such as Figure 5 As shown, the inner sleeve 10 is divided into an inner sleeve body 13 and an upper valve core 14 . An annular flange is provided at the lower end of the inner sleeve body 13 , and another annular flange is provided on the upper valve core 14 . The upper valve core 14 can be clamped and fixed on the inner sleeve body 13 .

[0032] Furthermore, an upper valve cover 3 and a lower valve cover 4 are respectively provided at the upper and lower ends of the valve body 1; the upper valve cover 3 presses and fixes the inner sleeve 10 and the upper end of the valve body 1, and the lower valve cover 4 presses and fixes the inner sleeve 10 and the lower end of the valve body 1, and a plurality of connecting ears are provided on the upper valve cover 3 and the lower valve cover 4, and each connecting ear on the upper valve cover 3 is detachably fixedly connected to the connecting ears on the lower valve cover 4 through a group of connecting parts, and openings are provided on the upper valve cover 3 and the lower valve cover 4 for passing water; the lower end of the core shaft 5 passes through the lower valve cover 4.

[0033] Furthermore, the lower valve cover 4 and the upper valve cover 3 are hollow valve covers, which not only support and connect the valve body 1 and the inner sleeve 10, but also facilitate water to enter the water passage cavity through the hollow structure of the valve cover.

[0034] Furthermore, the buoyancy sensing mechanism includes a float device and a connecting rod 9. The middle part of the connecting rod 9 is rotatably connected to the lower valve cover 4, and the two ends of the connecting rod 9 are rotatably connected to the core shaft 5 and the float device respectively. The float device can change with the change of water level. When the upper and lower positions of the float device change, it will drive the connecting rod 9 and then drive the core shaft 5 to move up and down. The whole process does not require electricity and will not cause accidents such as oil explosions due to leakage.

[0035] Furthermore, the float device includes a float 6, a counterweight 8 and a connecting rod 7. The two ends of the connecting rod 7 are respectively fixedly connected to the counterweight 8 and the float 6. The connecting rod 9 is rotatably connected to the counterweight 8. The counterweight 8 is made of stainless steel. The staff can control the height of the discharge water level by changing the mass of the counterweight 8.

[0036] Furthermore, a filler is provided inside the float 6 to improve the pressure resistance of the float 6 and extend the service life.

[0037] Furthermore, the valve plug 12 is made of fluororubber and has a good sealing effect.

[0038] Embodiment 2

[0039] The present embodiment provides an automatic dehydrator, including the conical mechanical valve in the first embodiment. The automatic dehydrator includes a storage tank, which is a small storage tank used to contain a mixed solution of petroleum, water and other impurities after preliminary precipitation; the conical mechanical valve is fixedly arranged at the bottom of the storage tank and the second water outlet 2 of the conical mechanical valve is connected to the drain port of the storage tank. When the valve plug 12 is separated from the inner sleeve 10, the water in the storage tank is discharged through the first water outlet 11, the second water outlet 2 and the drain port in sequence to achieve the purpose of dehydration. When the water level drops to a lower level, the valve plug 12 enters the inner sleeve 10 and closes the first outlet to prevent the petroleum in the storage tank from leaking.

[0040] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A conical mechanical valve, characterized in that: include: A valve body, a core shaft, a valve plug and a buoyancy sensing mechanism, wherein an inner sleeve is provided in the valve body, a truncated cone-shaped water passage chamber is provided in the inner sleeve, the large end and the small end of the water passage chamber are both open, a first water outlet is provided on the side wall of the inner sleeve corresponding to the water passage chamber, a second water outlet is provided on the side of the valve body, the second water outlet is communicated with the first water outlet; the outer shape of the valve plug is also truncated cone-shaped and matches the inner wall of the water passage chamber; the valve plug is fixedly arranged on the core shaft and is sealedly connected to the core shaft; one end of the core shaft can pass through the water passage chamber, and there is a gap between the core shaft and the openings at both ends of the water passage chamber, the core shaft can move axially in the water passage chamber and make the outer wall of the valve plug fit on the inner wall of the water passage chamber, and the valve plug can open and close the first water outlet; the float The free end of the force sensing mechanism is rotatably connected to one end of the core shaft, and the buoyancy sensing end of the buoyancy sensing mechanism is used to be set in the storage tank and drive the core shaft to move up and down as the water level in the storage tank changes; a plurality of the first water outlets are evenly opened on the side wall of the water passage chamber; the valve plug is made of fluororubber; an upper valve cover and a lower valve cover are respectively provided at the upper and lower ends of the valve body; the upper valve cover presses and fixes the inner sleeve and one end of the valve body, and the lower valve cover presses and fixes the inner sleeve and the other end of the valve body, and a plurality of connecting ears are provided on the upper valve cover and the lower valve cover, and each connecting ear on the upper valve cover is detachably fixedly connected to the connecting ear on the lower valve cover through a group of connecting parts, and openings are provided on the upper valve cover and the lower valve cover for passing water; the lower end of the core shaft passes through the lower valve cover.

2. The conical mechanical valve according to claim 1, characterized in that: The lower valve cover and the upper valve cover are hollow valve covers.

3. The conical mechanical valve according to claim 2, characterized in that: The buoyancy sensing mechanism comprises a float device and a connecting rod, the middle part of the connecting rod is rotatably connected to the lower valve cover, and the two ends of the connecting rod are rotatably connected to the core shaft and the float device respectively.

4. The conical mechanical valve according to claim 3, characterized in that: The floating ball device comprises a floating ball, a counterweight block and a connecting rod, two ends of the connecting rod are respectively fixedly connected to the counterweight block and the floating ball, and the connecting rod is rotatably connected to the counterweight block.

5. The conical mechanical valve according to claim 4, characterized in that: A filler is arranged in the float.

6. An automatic dehydrator, characterized in that: A conical mechanical valve comprising the conical mechanical valve according to any one of claims 1 to 5.

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