Intelligent intrinsically safe electric ball valve

Abstract

The application provides an intelligent intrinsic safety electric ball valve, and belongs to the technical field of electric ball valves.The intelligent intrinsic safety electric ball valve comprises a shell main body, the shell main body comprises a main shell and an auxiliary shell, the main shell and the auxiliary shell are spliced into a valve cavity, water passing holes are arranged on the main shell and the auxiliary shell and allow a water source to pass through, and the water passing holes penetrate through the valve cavity;an upstream water source can enter the inside of a pressure cavity, when water pressure becomes large, the water pressure can be divided to the inside of a pressure receiving cavity through a pressure dividing pipe, the inside pressure of the pressure receiving cavity is increased, a sliding disc is pushed to move downwards, the sliding disc drives a sliding column to move downwards, and the second valve core can be rotated through cooperation between a spiral groove and a protrusion, so that the water passing capacity of a valve body can be adjusted, and the electric ball valve can adjust the water passing capacity of the valve body according to the water pressure, so that the water passing of the ball valve is more stable.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric ball valves, and particularly relates to an intelligent intrinsic safety electric ball valve. BACKGROUND

[0002] Intrinsic safety is also called essential safety, and is the safest explosion-proof type among all explosion-proof types. Intrinsic safety products cannot cause explosion of flammable and explosive gas in the surrounding environment due to internal short circuit or short circuit, so it is called essential safety. Electric ball valves are important execution mechanisms in industrial automatic control systems. Electric ball valves are valves in which the valve disc rotates around the axis of the valve stem according to the movement of the valve disc. The change of the valve seat opening is in direct proportion to the travel of the valve disc. They are mainly used to cut off or connect the medium in the pipeline.

[0003] The existing ball valve can adjust the water flow of the ball valve through the travel of the valve disc during use, but when the valve disc has a fixed travel, the water flow of the ball valve will also increase when the pressure of the upstream water source is large, and the water flow of the ball valve will also decrease when the pressure of the upstream water source decreases. Therefore, the existing electric ball valve is mainly used in environments with low water flow. For the case of needing to reach a specified cubic water at a fixed time, the existing electric ball valve is easily affected by the pressure of the upstream water source. SUMMARY

[0004] The purpose of the present application is to provide an intelligent intrinsic safety electric ball valve, which aims to solve the problem that the water flow of the electric ball valve in the prior art is easily affected by the pressure of the upstream water source.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an intelligent intrinsic safety electric ball valve, comprising:

[0006] A housing body, the housing body comprises a main housing and a secondary housing, the main housing and the secondary housing are spliced into a valve cavity, the main housing and the secondary housing are both provided with a water passing hole through which the water source passes, the water passing hole penetrates the valve cavity, the main housing is provided with a pressure cavity and a driving cavity, the pressure cavity and the driving cavity are communicated through a pressure distribution pipe, and the housing body is provided with an electric actuator through a mounting frame;

[0007] A valve body, the valve body rotates in the interior of the valve cavity, the valve body comprises a first valve core and a second valve core, the second valve core is used for adjusting the water flow of the first valve core, the second valve core is provided with a slide column located in the interior of the driving cavity, the slide column can move up and down under the pressure in the interior of the driving cavity, the up-and-down movement of the slide column can drive the second valve core to rotate, and the valve body is connected with the output end of the electric actuator through a valve stem.

[0008] The second valve core is provided with a through hole, the through hole is provided with a protrusion, the slide column is arranged in the through hole, and the slide column is provided with a spiral groove.

[0009] The inside of the valve rod is provided with a vertical groove along the axial direction of the valve rod, a sliding disc is slidably connected in the vertical groove, the sliding disc is arranged at one end of the slide column away from the second valve core, and the slide column can slide in the inside of the valve rod.

[0010] The sliding disc and the mounting frame form a pressure receiving cavity, the pressure distribution pipe and the inside of the pressure receiving cavity are communicated, the sliding disc is provided with a sealing ring for improving the sealing performance between the driving cavity and the sliding disc, and the inside of the driving cavity is provided with a first elastic member for pushing the sliding disc away from the valve body.

[0011] The water inlet end of the main shell is provided with a filter component.

[0012] The side wall of the pressure cavity is provided with a capsule membrane, the capsule membrane and the side wall of the pressure cavity form an air chamber, and the inside of the pressure distribution pipe and the pressure cavity are communicated.

[0013] The pressure cavity is provided with a first closing plate at the water passing hole on the side close to the valve body, the first closing plate is provided with not less than two rectangular first water passing grooves, the inside of the pressure cavity is provided with a second closing plate which can slide along the axial direction of the pressure cavity, the second closing plate is provided with second water passing grooves which are arranged in a staggered mode with the first water passing grooves, the second closing plate slides in the inside of the pressure cavity through a sliding groove and a sliding block structure, the side, away from the first closing plate, of the second closing plate is provided with a filter screen, and the side, away from the first closing plate, of the second closing plate is provided with a second elastic member for pushing the filter screen away from the valve body.

[0014] The first valve core and the second valve core are both ball valves.

[0015] The side, close to the valve body, of the auxiliary shell is provided with a pressure discharge groove which is communicated with the inside of the driving cavity.

[0016] The electric actuator is a safety type electric actuator.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. The intelligent intrinsically safe electric ball valve, firstly, the upstream water source can enter the inside of the pressure chamber, when the water pressure becomes larger, through the pressure distribution pipe, the water pressure can be distributed to the inside of the pressure receiving chamber, so that the internal pressure of the pressure receiving chamber increases, the sliding disc moves downward, the sliding column moves downward, through the cooperation between the spiral groove and the protrusion, so that the second valve core can be rotated, when the second valve core rotates, the water flow of the valve body can be adjusted, so that the electric ball valve can adjust the water flow of the valve body according to the water pressure, so that the water flow of the ball valve is more stable.

[0019] 2. The intelligent intrinsically safe electric ball valve, the impurities in the medium can be filtered through the filter screen, and the water pressure pushes the second sealing plate close to the first sealing plate through the continuous blockage of the filter screen, when the filter screen is seriously blocked, the second sealing plate will seal the first sealing plate, so that the electric ball valve is cut off, so as to remind the staff to replace the filter screen. DETAILED DESCRIPTION

[0020] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, together with the embodiments of the application, to explain the application, and do not constitute a limitation on the application. In the drawings:

[0021] Figure 1 It is a structure schematic view of the first embodiment in the application;

[0022] Figure 2 It is an axonometric sectional view of the first embodiment in the application;

[0023] Figure 3 It is a connection structure schematic view of the second valve core and the sliding column in the specific embodiment in the application;

[0024] Figure 4 It is a first valve core structure schematic view in the specific embodiment in the application;

[0025] Figure 5 It is an axonometric sectional view of the second embodiment in the application;

[0026] Figure 6 It is an axonometric sectional view of the third embodiment in the application.

[0027] In the figure: 1, the shell body; 101, the main shell; 102, the auxiliary shell; 103, the valve cavity; 104, the pressure cavity; 105, the drive cavity; 106, the pressure distribution pipe; 107, the water passage; 108, the pressure receiving cavity; 2, the electric actuator; 3, the mounting frame; 4, the valve body; 401, the first valve core; 402, the second valve core; 4021, the perforation; 4022, the protrusion; 403, the valve rod; 4031, the vertical groove; 404, the sliding column; 4041, the spiral groove; 4043, the sliding disc; 4044, the sealing ring; 5, the first elastic member; 6, the filter component; 601, the first closing plate; 602, the first water passage; 603, the second closing plate; 604, the second water passage; 605, the sliding groove; 701, the air chamber; 606, the filter screen; 607, the second elastic member; 7, the capsule membrane; 8, the pressure discharge groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0029] Please refer to Figures 1-2 The present application provides the following technical solutions: an intelligent intrinsic safety electric ball valve, comprising a shell body 1 and an electric actuator 2 arranged on the shell body 1, the electric actuator 2 being an intrinsic safety electric actuator 2, arranged above the shell body 1 through a mounting frame 3, which can improve the safety of the electric ball valve, and a valve body 4 arranged in the shell body 1, the valve body 4 being a ball valve, rotatable in the shell body 1 to control the opening and closing of the device.

[0030] Please refer to Figures 2-3 The valve body 4 comprises a first valve core 401 and a second valve core 402, the first valve core 401 being spherical and rotatable in the shell body 1, and having a water passage in the middle, the water passage allowing water to flow, the first valve core 401 integrally formed with a valve rod 403, the valve rod 403 connected with the output end of the electric actuator 2, so that the electric actuator 2 can drive the valve rod 403 and the first valve core 401 to rotate, when the first valve core 401 rotates, the device can be opened and closed, the second valve core 402 rotatable in the first valve core 401, in the shape of a sphere with a smaller diameter than the first valve core 401, the second valve core 402 also provided with a water passage in the middle, and the two water passages having equal diameters, when the first valve core 401 rotates relative to the second valve core 402, the size of the water passage of the first valve core 401 can be adjusted, and thus the water flow of the first valve core 401 can be adjusted.

[0031] As Figure 3As shown, the top of the second valve core 402 is provided with a circular through hole 4021 penetrating to the inside of the water passage, and a slide column 404 is slidably arranged in the inside of the through hole 4021, the slide column 404 is cylindrical and can slide and rotate in the inside of the through hole 4021, the bottom end of the slide column 404 is provided with a helical groove 4041 coaxial with the axis of the slide column 404, the number of turns of the helical groove 4041 is half, and the side wall of the through hole 4021 is integrally provided with a protrusion 4022 slidably arranged in the inside of the helical groove 4041, when the slide column 404 slides up and down relative to the second valve core 402, the protrusion 4022 can slide in the inside of the helical groove 4041, and when the slide column 404 is not rotatable, the second valve core 402 rotates relative to the slide column 404.

[0032] As shown in the figure, Figure 2-4 The inside of the valve rod 403 is provided with a vertical groove 4031 along the axial direction of the valve rod 403, and a slide disc 4043 is slidably connected in the inside of the vertical groove 4031, so that the slide disc 4043 can slide along the axial direction of the valve rod 403, the slide disc 4043 and the slide column 404 are coaxially fixed by welding, and the slide column 404 is coaxially arranged in the inside of the valve rod 403, so that the slide column 404 can slide up and down in the inside of the valve rod 401, and the first valve core 401 is provided with a through hole coaxially arranged with the valve rod 403, so that the slide column 404 can pass through the through hole and be connected with the second valve core 402.

[0033] As shown in the figure, Figure 2 As shown in the figure, the first embodiment of the application, the shell body 1 includes a main shell 101 and a secondary shell 102, the main shell 101 and the secondary shell 102 are fixedly connected with each other by screws, so that the main shell 101 and the secondary shell 102 are spliced into a valve cavity 103, the valve body 4 is arranged in the inside of the valve cavity 103 and can rotate in the inside of the valve cavity 103, the valve cavity 103 and the outer surface of the valve body 4 are in contact, the main shell 101 is provided with a pressure cavity 104 and a driving cavity 105, the pressure cavity 104 and the driving cavity 105 are communicated with each other through a pressure distribution pipe 106, the main shell 101 and the secondary shell 102 are both provided with a water passage 107, and the water passage 107 and the water passage coaxially arranged in the valve body 4;

[0034] The pressure cavity 104 is arranged on the water passage 107 of the main shell 102, when the water source enters into the main shell 102, it will enter into the inside of the pressure cavity 104 through the water passage 107, so as to pressurize the inside of the pressure cavity 104, and the pressure cavity 104 will distribute the pressure in the pressure distribution pipe 106 to the inside of the driving cavity 105 through the pressure distribution pipe 106.

[0035] The driving cavity 105 is arranged above the main shell 102, and the driving cavity 105 is in the form of a circular cavity, which can be used for sleeving the sliding disc 4043, so that the sliding disc 4043 slides in the inside of the driving cavity 105 and forms the pressure receiving cavity 108 with the mounting frame 3. In order to make the sliding disc 4043 rotate in the inside of the driving cavity 105, the cross section of the sliding disc 4043 is circular and matched with the driving cavity 105, and the sliding disc 4043 is provided with a sealing ring 4044 (see Figure 3 ), which can be used for improving the sealing between the driving cavity 105 and the sliding disc 4043. The end of the pressure distribution pipe 106 away from the pressure cavity 104 is connected with the inside of the pressure receiving cavity 108. The inside of the driving cavity 105 is provided with the first elastic member 5, which is a compression spring, one end of which is fixed on the bottom of the driving cavity 105, and the other end of which is fixed on the sliding disc 4043. When the pressure in the inside of the pressure cavity 104 enters the inside of the pressure receiving cavity 108 through the pressure distribution pipe 106, the pressure in the inside of the pressure receiving cavity 108 increases, so as to push the sliding disc 4043 to move downward. When the pressure of the pressure receiving cavity 108 decreases, the sliding disc 4043 can be reset by the first elastic member 5. The sliding disc 4043 moves up and down, so as to make the sliding column 404 move up and down.

[0036] Referring to Figure 2 , the water inlet end of the main shell 101 is provided with the filtering component 6, which is a filter screen arranged on the main shell 101. The filtering component 6 can be used for filtering impurities in the fluid medium, and improves the purity of the medium.

[0037] As shown in Figure 5 , it is the second embodiment of the application. Different from the first embodiment, the side wall of the pressure cavity 104 is bonded with the capsule membrane 7, the material of the capsule membrane 7 is flexible rubber, the capsule membrane 7 is arranged around the pressure cavity 104 to form a closed space, so that the capsule membrane 7 and the side wall of the pressure cavity 104 form the air chamber 701. The pressure distribution pipe 106 communicates with the inside of the air chamber 701. When the water flow enters the inside of the pressure cavity 104, the pressure in the inside of the pressure cavity 104 increases, so as to push the capsule membrane 7 to extrude the air chamber 701. The gas in the inside of the air chamber 701 enters the inside of the pressure receiving cavity 108 through the pressure distribution pipe 106, so as to increase the air pressure in the inside of the pressure receiving cavity 108, and push the sliding disc 4043 to move downward.

[0038] As shown in Figure 6As shown, the third embodiment of the present application is different from the first embodiment, the pressure cavity 104 is integrally formed with a first closing plate 601 at the water passing hole 107 close to one side of the valve body 4, the first closing plate 601 is provided with three rectangular first water passing grooves 602, the number of the first water passing grooves 602 can be four or more, the number of the first water passing grooves 602 is not limited in this embodiment, and the first water passing grooves 602 can be triangular, circular, trapezoidal or rhombic, and the first water passing grooves 602 are not limited in this embodiment, the inside of the pressure cavity 104 is provided with a second closing plate 603 which can slide along the axis direction of the pressure cavity 104, the second closing plate 603 is provided with second water passing grooves 604 which are staggered with the first water passing grooves 602, the shape of the second water passing grooves 604 is the same as that of the first water passing grooves 602, and the number of the second water passing grooves 604 is one more than that of the first water passing grooves 602, and the first water passing grooves 602 and the second water passing grooves 604 do not have overlapping parts when the first closing plate 601 and the second closing plate 603 are in contact; the side wall of the pressure cavity 104 is provided with a sliding groove 605 arranged along the axis direction of the pressure cavity 104, the second closing plate 603 is provided with a sliding block (not shown in the figure) which slides in the sliding groove 605, and the sliding groove 605 and the sliding block are matched to avoid rotation of the second closing plate 603; the side of the second closing plate 603 away from the first closing plate 601 is provided with a filter screen 606, the filter screen 606 is a metal filter screen, or a plastic filter screen, which can be selected according to actual use, and the filter screen 606 can completely cover all the second water passing grooves 604 to filter impurities in the fluid, the side of the second closing plate 603 away from the first closing plate 601 is provided with a second elastic member 607, the second elastic member 607 is a tension spring, one end of which abuts against the first closing plate 601, and the other end of which abuts against the side of the pressure cavity 104 away from the valve body 4, when the medium enters the inside of the pressure cavity 104, the filter screen 606 filters the medium, and as the filter screen 606 is gradually blocked, the pressure on the side of the filter screen 606 away from the valve body 4 gradually increases, so that the pressure pushes the second closing plate 603 to slide in the inside of the pressure cavity 104, when the filter screen 606 is completely blocked, the first closing plate 601 and the second closing plate 603 are in contact, the first water passing grooves 602 and the second water passing grooves 604 are staggered, so that the water passing hole 107 can be closed to block the medium, and when the medium is cut off, the staff can be reminded to replace the filter screen 606.

[0039] As shown, Figure 2 The side of the secondary housing 102 close to the valve body 4 is provided with a pressure discharge groove 8 which can communicate with the bottom of the driving cavity 105, so that the sliding disc 4043 can discharge the pressure below the sliding disc 4043 when the sliding disc 4043 moves downward.

Claims

1. An intelligent intrinsically safe electric ball valve, characterized in that, The utility model relates to a kind of valve, including: Shell body (1), the shell body (1) includes main shell (101) and auxiliary shell (102), the main shell (101) and auxiliary shell (102) are spliced into valve cavity (103), the main shell (101) and auxiliary shell (102) are provided with the water pass hole (107) that water source passes, the water pass hole (107) penetrates valve cavity (103), the main shell (101) is provided with pressure chamber (104) and drive cavity (105), the pressure chamber (104) and drive cavity (105) are communicated by pressure distribution pipe (106), the shell body (1) is provided with electric actuator (2) by mounting bracket (3); Valve body (4), valve body (4) rotates inside valve cavity (103), the valve body (4) includes first valve core (401) and second valve core (402), the second valve core (402) can be used to adjust the water flow of first valve core (401), the second valve core (402) is provided with spool (404) inside drive cavity (105), the spool (404) can be moved up and down by the pressure inside drive cavity (105), the spool (404) moves up and down can drive second valve core (402) rotation, the valve body (4) is connected by valve rod (403) and the output end of electric actuator (2).

2. The intelligent intrinsically safe electric ball valve according to claim 1, characterized in that: Perforation (4021) is opened in the second valve core (402), the protrusion (4022) is arranged in the perforation (4021), the spool (404) is arranged in the inside of perforation (4021), the spool (404) is provided with helical groove (4041), the protrusion (4022) can slide in the inside of helical groove (4041).

3. The intelligent intrinsically safe electric ball valve according to claim 2, characterized in that: The inside of valve rod (403) is provided with vertical groove (4031) along the axial direction of valve rod (403), the vertical groove (4031) is slidably connected with sliding disc (4043), the sliding disc (4043) is arranged at the end of spool (404) away from second valve core (402), the spool (404) can slide in the inside of valve rod (403).

4. The intelligent intrinsically safe electric ball valve according to claim 3, characterized in that: Pressure chamber (108) is formed between the sliding disc (4043) and mounting bracket (3), the inside of pressure distribution pipe (106) and pressure chamber (108) is communicated, the sliding disc (4043) is provided with sealing ring (4044) for improving the sealing between drive cavity (105) and sliding disc (4043), the inside of drive cavity (105) is provided with first elastic member (5) for pushing sliding disc (4043) away from valve body (4).

5. The intelligent intrinsically safe electric ball valve according to claim 1, characterized in that: The water inlet end of the main shell (101) is provided with a filter component (6).

6. The intelligent intrinsically safe electric ball valve according to claim 1, characterized in that: The side wall of the pressure chamber (104) is provided with a capsule membrane (7), the capsule membrane (7) and the side wall of the pressure chamber (104) form an air chamber (701), the inside of the pressure distribution pipe (106) and the pressure chamber (104) is communicated.

7. The intelligent intrinsically safe electric ball valve according to claim 5, characterized in that: The pressure cavity (104) is provided with a first closing plate (601) near the water passing hole (107) on one side of the valve body (4), the first closing plate (601) is provided with not less than two rectangular first water passing grooves (602), the inside of the pressure cavity (104) is provided with a second closing plate (603) which can slide along the axis direction of the pressure cavity (104), the second closing plate (603) is provided with second water passing grooves (604) which are staggered with the first water passing grooves (602), the second closing plate (603) slides in the inside of the pressure cavity (104) through the sliding groove (605) and the sliding block structure, the side of the second closing plate (603) which is far away from the first closing plate (601) is provided with a filter screen (606), the side of the second closing plate (603) which is far away from the first closing plate (601) is provided with a second elastic element (607) which makes the filter screen (606) far away from the valve body (4).

8. The intelligent intrinsically safe electric ball valve according to claim 1, characterized in that: The first valve core (401) and the second valve core (402) are ball valves.

9. The intelligent intrinsically safe electric ball valve according to claim 1, characterized in that: The side of the auxiliary housing (102) which is near the valve body (4) is provided with a pressure discharging groove (8) which communicates with the inside of the driving cavity (105).

10. The intelligent intrinsically safe electric ball valve according to any one of claims 1-9, characterized in that: The electric actuator (2) is an intrinsic safety type electric actuator.

Images