Anti-leakage electromagnetic stop valve

Abstract

The utility model relates to the field of electromagnetic shut-off valves, in particular to a leakproof electromagnetic shut-off valve which comprises a protective shell for preventing gas from leaking to the outside, and a pipeline is arranged in the protective shell. The plugging mechanism comprises a first gear arranged on one side of the inner wall of the protective shell; according to the device, through a first gear, a rack, a baffle, an inserting shell and an air outlet hole, the first gear is meshed with the rack while a valve ball rotates, the rack drives the baffle to move upwards, then air in a protective shell is exhausted through the air outlet hole and a filter cartridge, and it is ensured that when air leakage occurs in a pipeline, enough air pressure exists in the protective shell to push a sliding plug to jack up a push rod; according to the exhaust mode, the problem that in a conventional exhaust mode, after a push block is pushed by air pressure to release pressure of air in the outer box, a push rod does not have enough air pressure to move upwards, and consequently the motor cannot be communicated in time is solved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic shut-off valves, and in particular to a leak-proof electromagnetic shut-off valve. Background Technology

[0002] An electromagnetic shut-off valve is a valve controlled by an electromagnetic signal. It is mainly used in automated control systems to regulate or cut off the flow of fluid. However, traditional electromagnetic shut-off valves usually rely on sensors to determine and control the valve to close. But sensors are prone to becoming insensitive after prolonged use.

[0003] A search revealed that the Chinese patent "An electromagnetic shut-off valve for preventing leakage" (publication number CN215928462U) describes a utility model that incorporates a sliding plug and an alarm light. Since the outer casing is welded to the pipeline connection point, when a leak occurs in the pipeline, the pressure inside the outer casing increases, pushing the sliding plug upwards and triggering a push rod to open the motor. Once the motor is connected, the alarm light illuminates, allowing the pressure inside the outer casing to indicate a leak and providing a warning function. When the pressure inside the outer casing increases, gas enters the inner casing through the casing opening, pushing the push block outwards. Because the push block has an air groove, the outer casing automatically depressurizes, ensuring safe pressure relief.

[0004] Although the above method uses the increased internal air pressure of the outer casing to lift the sliding plug and push the push rod to open the motor, when depressurizing the gas inside the outer casing, it also uses the gas to push the push block to release pressure. When the pipeline leaks, the internal air pressure of the outer casing pushes the push block. After the push block is pushed out, the air pressure inside the outer casing will be released through the air groove. The sliding plug will not have enough air pressure to move upward, causing the motor to fail to connect in time.

[0005] Therefore, a leak-proof electromagnetic shut-off valve is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a leak-proof electromagnetic shut-off valve to solve the above-mentioned problems, thereby improving the issue that after the push block is pushed by air pressure to release the gas inside the outer casing, the push rod will not have enough air pressure to move upward, resulting in the motor not being able to connect in time.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a leak-proof electromagnetic shut-off valve, comprising: a protective shell to prevent gas leakage to the outside, wherein a pipe is provided inside the protective shell; and a sealing mechanism, wherein the sealing mechanism includes a first gear disposed on one side of the inner wall of the protective shell, a rack meshing with one side of the first gear, a baffle fixedly connected to the bottom of the rack, and a plug-in shell disposed at the bottom of the baffle, the bottom of the plug-in shell being fixedly connected to the inner bottom of the protective shell, and an air outlet being provided on the side of the plug-in shell near the pipe. Through the first gear, rack, baffle, plug-in shell, and air outlet, the first gear meshes with the rack while the valve ball rotates, causing the rack to move the baffle upwards, and subsequently, the gas inside the protective shell is discharged through the air outlet and filter cartridge.

[0008] Preferably, the sealing mechanism further includes a motor fixedly connected to one side of the protective shell. A vertical shaft is fixedly connected to the output end of the motor. A second bevel gear is fixedly connected to the bottom of the vertical shaft. A third bevel gear meshes with one side of the second bevel gear. A horizontal shaft is fixedly connected to the inner cavity of the third bevel gear. The other end of the horizontal shaft passes through the inner cavity of the pipe and is fixedly connected to a valve ball. A transmission rod is fixedly connected to the side of the valve ball opposite to the horizontal shaft. The other end of the transmission rod is fixedly connected to the inner cavity of the first gear. An alarm light is installed on the top of the motor. Through the motor, vertical shaft, second bevel gear, third bevel gear, horizontal shaft, valve ball, and transmission rod, the vertical shaft is rotated by the motor. The second and third bevel gears at one end of the vertical shaft then rotate the horizontal shaft, which in turn rotates the valve ball ninety degrees, thus closing the pipe.

[0009] Preferably, the inner bottom of the insertion shell is provided with an insertion groove, the bottom of which contacts the bottom of the baffle. The insertion groove serves to limit the position of the baffle when it is inserted into the insertion shell.

[0010] Preferably, positioning blocks are fixedly connected to both sides of the motor, and one side of each positioning block is fixedly connected to one side of the protective shell. The positioning blocks thus secure the motor.

[0011] Preferably, a limiting block is fixedly connected to one side of the rack, and the surface of the limiting block is slidably connected to one side of the protective shell. The limiting block limits the movement of the rack during its motion, ensuring that the rack always maintains linear motion.

[0012] Preferably, a sealing block is fixedly connected to the top of the baffle, and the bottom of the sealing block abuts against the top of the plug-in shell. The sealing block effectively seals the connection between the baffle and the plug.

[0013] Preferably, a push rod is provided on one side of the inner cavity of the protective shell, and two limiting shells are symmetrically fixedly connected to one side of the inner cavity of the protective shell. A sliding plug is provided at the inner bottom of the two limiting shells below the push rod, and a filter cylinder is provided on one side of the protective shell. Through the push rod, limiting shells, sliding plugs, and filter cylinder, when gas leaks from the pipeline, the internal gas pressure of the protective shell increases. This gas pressure pushes the sliding plug upwards, which in turn pushes the push rod, activating the motor and simultaneously sounding an alarm light. The filter cylinder filters and decomposes flammable gas materials, enabling automatic decomposition of the gas and ensuring the safety of the emitted gas.

[0014] The beneficial effects of the utility model are:

[0015] By using a first gear, rack, baffle, plug-in housing, and vent, the first gear meshes with the rack while the valve ball rotates, causing the rack to move the baffle upward. Subsequently, the gas inside the protective housing will be discharged through the vent and filter cartridge, ensuring that when the pipeline leaks, there is enough air pressure inside the protective housing to push the slide plug to lift the push rod. This ensures that the motor can start in time to seal the pipeline when it leaks. This exhaust method avoids the problem of conventional exhaust methods where the push rod will not have enough air pressure to move upward after the gas inside the outer box is depressurized by the push block, resulting in the motor not being able to connect in time.

[0016] The system utilizes a motor, a vertical shaft, a second bevel gear, a third bevel gear, a horizontal shaft, a valve ball, and a transmission rod. The motor drives the vertical shaft to rotate, which in turn drives the horizontal shaft to rotate through the cooperation of the second and third bevel gears at one end of the vertical shaft. The horizontal shaft then drives the valve ball to rotate 90 degrees, thereby closing the pipeline. Attached Figure Description

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the sealing mechanism of this utility model;

[0020] Figure 4 For the utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0021] In the diagram: 1. Protective shell; 2. Pipe; 3. Push rod; 4. Limiting shell; 5. Sliding plug; 6. Sealing mechanism; 601. Motor; 602. Positioning block; 603. Vertical shaft; 604. Second bevel gear; 605. Third bevel gear; 606. Horizontal shaft; 607. Valve ball; 608. Transmission rod; 609. First gear; 610. Rack; 611. Limiting block; 612. Baffle; 613. Sealing block; 614. Insertion shell; 615. Insertion groove; 616. Air outlet; 617. Alarm light; 7. Filter cartridge. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] When implementing: Figure 1-4 As shown, a leak-proof electromagnetic shut-off valve includes: a protective shell 1 to prevent gas leakage to the outside, with a pipe 2 disposed inside the protective shell 1; a sealing mechanism 6, the sealing mechanism 6 including a first gear 609 disposed on one side of the inner wall of the protective shell 1, a rack 610 meshing on one side of the first gear 609, a baffle 612 fixedly connected to the bottom of the rack 610, a plug-in shell 614 disposed at the bottom of the baffle 612, the bottom of the plug-in shell 614 fixedly connected to the inner bottom of the protective shell 1, and an air outlet 616 opened on the side of the plug-in shell 614 near the pipe 2; the sealing mechanism 6 also includes a motor 601 fixedly connected to one side of the protective shell 1, a vertical shaft 603 fixedly connected to the output end of the motor 601, a second bevel gear 604 fixedly connected to the bottom of the vertical shaft 603, a third bevel gear 605 meshing on one side of the second bevel gear 604, and the third bevel gear 605... A horizontal shaft 606 is fixedly connected to the inner cavity. The other end of the horizontal shaft 606 passes through the inner cavity of the pipe 2 and is fixedly connected to a valve ball 607. A transmission rod 608 is fixedly connected to the side of the valve ball 607 opposite to the horizontal shaft 606. The other end of the transmission rod 608 is fixedly connected to the inner cavity of the first gear 609. An alarm light 617 is provided on the top of the motor 601. A plug-in groove 615 is provided on the bottom of the plug-in housing 614. The bottom of the plug-in groove 615 contacts the bottom of the baffle 612. Positioning blocks 602 are fixedly connected to both sides of the motor 601. One side of the positioning block 602 is fixedly connected to one side of the protective shell 1. A limit block 611 is fixedly connected to one side of the rack 610. The surface of the limit block 611 is slidably connected to one side of the protective shell 1. A sealing block 613 is fixedly connected to the top of the baffle 612. The bottom of the sealing block 613 abuts against the top of the plug-in housing 614.

[0024] Through the locking block and oil hole set inside the vertical shaft 603, when the vertical shaft 603 rotates, centrifugal force is generated, and the locking block will move outward, exposing the oil hole, so that the lubricating oil in the oil passage flows to the gear meshing point, thus realizing the self-lubricating function of the horizontal shaft 606 and the vertical shaft 603 during rotation, ensuring the gear life. It should be noted that the above descriptions are all devices with relatively mature existing technology. Specific models can be selected according to actual needs, and will not be elaborated here.

[0025] The valve ball 607 has a hollow interior and vent holes at the top and bottom, through which gas can enter other pipelines.

[0026] like Figure 4 As shown, a push rod 3 is provided on one side of the inner cavity of the protective shell 1, and two limiting shells 4 are symmetrically fixedly connected on one side of the inner cavity of the protective shell 1. A sliding plug 5 is provided at the bottom of the two limiting shells 4 below the push rod 3, and a filter cylinder 7 is provided on one side of the protective shell 1.

[0027] When gas leaks from pipe 2, the internal air pressure of protective shell 1 increases. This air pressure pushes the sliding plug 5 upward, which in turn pushes the push rod 3. The push rod 3 then starts the motor 601, and the alarm light 617 sounds as a warning. The motor 601 then drives the vertical shaft 603 to rotate. Through the cooperation of the second bevel gear 604 and the third bevel gear 605 at one end of the vertical shaft 603, the horizontal shaft 606 rotates. The horizontal shaft 606 then drives the valve ball 607 to rotate 90 degrees, closing the valve. As the valve ball 607 rotates, the first gear 609 meshes with the rack 610, causing the rack 610 to move the baffle 612 upward. Subsequently, the gas inside protective shell 1 is discharged through the vent 616 and the filter cartridge 7, ensuring that when pipe 2 leaks, there is sufficient air pressure inside protective shell 1 to push the sliding plug 5 up and lift the push rod 3, ensuring that the motor 601 can start in time to seal pipe 2 when it leaks.

[0028] When this utility model is in use, if gas leaks from pipe 2, the internal air pressure of the protective shell 1 increases. This air pressure pushes the sliding plug 5 upward, which in turn pushes the push rod 3. The push rod 3 then starts the motor 601, and the alarm light 617 sounds as a warning. The motor 601 then drives the vertical shaft 603 to rotate. With the cooperation of the second bevel gear 604 and the third bevel gear 605 at one end of the vertical shaft 603, the horizontal shaft 606 rotates. The horizontal shaft 606 then drives the valve ball 607 to rotate 90 degrees, closing the valve. As the valve ball 607 rotates, the first gear 609 meshes with the rack 610, causing the rack 610 to move the baffle 612 upward. Subsequently, the gas inside the protective shell 1 is discharged through the vent 616 and the filter cartridge 7, ensuring that when pipe 2 leaks, there is sufficient air pressure inside the protective shell 1 to push the sliding plug 5 up and lift the push rod 3, ensuring that the motor 601 can start in time to seal the pipe 2 when it leaks.

[0029] It should be noted that the motor 601, vertical shaft 603, horizontal shaft 606 and alarm light 617 mentioned above are all devices with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the motor 601 and alarm light 617 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A leak-proof electromagnetic shut-off valve, characterized in that, include: A protective shell (1) to prevent gas from leaking to the outside, wherein a pipe (2) is provided inside the protective shell (1); The sealing mechanism (6) includes a first gear (609) disposed on one side of the inner wall of the protective shell (1). A rack (610) meshes with one side of the first gear (609). A baffle (612) is fixedly connected to the bottom of the rack (610). A plug-in shell (614) is disposed at the bottom of the baffle (612). The bottom of the plug-in shell (614) is fixedly connected to the inner bottom of the protective shell (1). An air outlet (616) is opened on the side of the plug-in shell (614) near the pipe (2).

2. The leak-proof electromagnetic shut-off valve according to claim 1, characterized in that: The sealing mechanism (6) also includes a motor (601) fixedly connected to one side of the protective shell (1). The output end of the motor (601) is fixedly connected to a vertical shaft (603). The bottom of the vertical shaft (603) is fixedly connected to a second bevel gear (604). A third bevel gear (605) meshes with one side of the second bevel gear (604). A horizontal shaft (606) is fixedly connected to the inner cavity of the third bevel gear (605). The other end of the horizontal shaft (606) passes through the inner cavity of the pipe (2) and is fixedly connected to a valve ball (607). A transmission rod (608) is fixedly connected to the side of the valve ball (607) opposite to the horizontal shaft (606). The other end of the transmission rod (608) is fixedly connected to the inner cavity of the first gear (609). An alarm light (617) is provided on the top of the motor (601).

3. The leak-proof electromagnetic shut-off valve according to claim 1, characterized in that: The bottom of the plug-in housing (614) is provided with a plug-in groove (615), and the bottom of the plug-in groove (615) is in contact with the bottom of the baffle (612).

4. The leak-proof electromagnetic shut-off valve according to claim 2, characterized in that: Positioning blocks (602) are fixedly connected to both sides of the motor (601), and one side of the positioning block (602) is fixedly connected to one side of the protective shell (1).

5. The leak-proof electromagnetic shut-off valve according to claim 1, characterized in that: A limiting block (611) is fixedly connected to one side of the rack (610), and the surface of the limiting block (611) is slidably connected to one side of the protective shell (1).

6. The leak-proof electromagnetic shut-off valve according to claim 1, characterized in that: A sealing block (613) is fixedly connected to the top of the baffle (612), and the bottom of the sealing block (613) abuts against the top of the plug-in shell (614).

7. The leak-proof electromagnetic shut-off valve according to claim 1, characterized in that: A push rod (3) is provided on one side of the inner cavity of the protective shell (1). Two limiting shells (4) are symmetrically fixedly connected on one side of the inner cavity of the protective shell (1). A sliding plug (5) is provided at the bottom of the two limiting shells (4) below the push rod (3). A filter cylinder (7) is provided on one side of the protective shell (1).

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