Pinion-and-rack type mechanical electromagnetic gas emergency cut-off valve

Abstract

The utility model discloses a gear rack type mechanical electromagnetic gas emergency cut-off valve, which belongs to the technical field of gas safety and comprises a valve body of the cut-off valve, a valve cover is mounted on one side of the valve body through a plurality of bolts, a shell is mounted on one side of the valve cover through a plurality of bolts, a module box is mounted on one side of the shell, and the module box is mounted on the other side of the valve cover. A driving part used for controlling opening and closing of the valve body is installed on the inner side of the shell, the two sides of the valve deck are spliced with the valve body and the shell through a plurality of bolts correspondingly, the valve body can be mechanically controlled to be opened or closed through the driving part, locking is achieved through permanent magnetic force, locking is relieved through electromagnetic force, and the sensitivity of the valve body is guaranteed; and the situation of magnetic field failure caused by excessive heating of the magnet due to continuous power supply required by electromagnetic force locking is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas safety field, concretely is a gear and rack formula mechanical electromagnetic gas emergency cut -out valve. BACKGROUND

[0002] Traditional electromagnetic emergency cut -out valve, the magnetic force of magnet and the compression force and relaxation of spring 11 cooperate each other, thereby achieving the opening and closing function of the product, the greater the gas pressure in the gas pipeline, the greater the spring force required to maintain the closed state of the product, and the magnetic force required to maintain the open state of the product is also greater, so in the case of excessive spring force, it will be difficult to achieve the open state by manual lifting,

[0003] At present, the cut -out valve is limited by pressure when used, and it is inconvenient to open or close by mechanical method, and the sealing effect is not good when the cut -out valve is closed and sealed, causing gas leakage through the valve, affecting the sealing performance and practicability of the cut -out valve in opening or closing operation, therefore, a gear and rack formula mechanical electromagnetic gas emergency cut -out valve is needed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses a gear and rack formula mechanical electromagnetic gas emergency cut -out valve to solve the problem in the above background technology.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a gear and rack formula mechanical electromagnetic gas emergency cut -out valve, including the valve body of cut -out valve, the valve cover is installed on one side of the valve body through a plurality of bolts, the shell is installed on one side of the valve cover through a plurality of bolts, the module box is installed on one side of the shell, the driving piece for controlling the opening and closing of the valve body is installed on the inner side of the shell;

[0006] The core shaft is installed through the inner side of the shell, the handle rod is installed at one end of the core shaft, the gear is sleeved on the outer side of the core shaft, the valve rod shaft is penetrated between the valve cover and the shell, the rack is embedded on one side of the valve rod shaft, the gear is engaged with the rack, the connector is installed on the outer side of the valve rod shaft and located at the connection of the valve cover and the shell, and the valve rod shaft is penetrated through the connector and is slidably connected with the connector.

[0007] Preferably, the spring is installed on the inner side of the valve cover and located on the outer side of the valve rod shaft, the connecting block is installed at one end of the valve rod shaft and located at one end of the spring, and the valve flap block is installed on the outer side of the connecting block.

[0008] Preferably, the valve flap flat film is installed on one side of the valve flap block.

[0009] Preferably, the adsorption disc is connected to the other end of the valve rod shaft, and the electromagnet assembly is installed on the inner side of the shell and close to one end.

[0010] Preferably, one end of the valve cover is embedded with a sealing ring, and the sealing ring is embedded with one side of the valve body.

[0011] Preferably, a plurality of guide rods are arranged on the inner side of the valve cover and outside the circumference of the valve rod shaft, the guide rods penetrate the valve flap block and are in sliding connection with the valve flap block.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The valve body is connected with the gas pipeline, the valve cover is spliced and installed with the valve body and the shell through a plurality of bolts on both sides, the opening or closing of the valve body can be mechanically controlled by using the driving part, the sensitivity of the valve body is ensured by using permanent magnet locking and electromagnetic unlocking, the situation that the magnet overheats to cause the magnetic field to fail is avoided, the driving part transmission member has a larger pipeline pressure application range, can satisfy the pipeline pressure greater than or equal to 0.6MPa, the internal structure and manufacturing process are greatly simplified compared with the mechanical emergency shut-off valve, the production cost is significantly reduced, and the valve body can be prevented from being closed or started with great effort when the pressure is high.

[0014] 2. The gear outside the mandrel can be rotated by using the handle rod, the gear can drive the valve rod shaft to slide through the rack and penetrate the valve body and the valve cover, the spring in the valve cover can extrude and push the valve flap block through the connecting block, the valve rod shaft and the valve flap block are driven to move downward by the relaxation force of the spring, at the same time, the valve flap flat film on one side of the valve flap block moves to the cutoff port in the valve body, the valve flap flat film is in close contact with the cutoff port in the valve body, and then the valve body remains in the closed state. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the overall structure of the utility model;

[0016] Figure 2 It is a left front view of the overall structure of the utility model;

[0017] Figure 3 It is a schematic view of the overall structure of the utility model; Figure 2 It is an enlarged view of A in the middle;

[0018] Figure 4 It is a schematic view of the structure of the driving part in the overall structure of the utility model.

[0019] In the drawing: 1, valve body; 2, valve cover; 3, shell; 4, module box; 5, mandrel; 6, handle rod; 7, gear; 8, valve rod shaft; 9, rack; 10, connector; 11, spring; 12, connecting block; 13, valve flap block; 14, valve flap flat film; 15, adsorption disc; 16, electromagnet assembly; 17, sealing ring; 18, guide rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment

[0021] Please refer to Figures 1-4 The utility model provides a gear and rack formula mechanical electromagnetic gas emergency cut -off valve, including the valve body 1 of cut -off valve, the valve cover 2 is installed to one side of valve body 1 through a plurality of bolts, the shell 3 is installed to one side of valve cover 2 through a plurality of bolts, the module box 4 is installed to one side of shell 3, the driving piece for controlling the opening and closing of valve body 1 is installed to the inner side of shell 3, the valve rod shaft 8 other end is connected with adsorption disc 15, the electromagnet assembly 16 is installed to the inner side of shell 3 and close to one end.

[0022] Among them, electromagnet assembly 16 includes the neodymium iron boron permanent magnet that is fixed and arranged in the middle vertical in shell 3, the concentric periphery of this permanent magnet, the fixed and arranged coil around the concentric inner periphery of shell 3, the gap between shell 3, permanent magnet and coil around is filled with epoxy resin, the enameled wire of coil around is connected with the external cable arranged on shell 3 through steel shell 3, to receive electric indication signal, valve body 1 installs and connects with gas pipeline, the valve cover 2 both sides are respectively spliced with valve body 1 and shell 3 through a plurality of bolts and install, the opening or closing of valve body 1 can be mechanically controlled using driving piece, using permanent magnet force locking, electromagnetic force releases the lock, ensures the sensitivity of valve body 1, avoids the situation that electromagnetic force locking needs continuous power supply, magnet excessive heating leads to magnetic field failure, using driving piece transmission member has greater pipeline pressure application range, can satisfy pipeline pressure greater than or equal to 0.6MPa, at the same time, compared with mechanical emergency cut -off valve, internal structure and manufacturing process are greatly simplified, production cost is significantly reduced, can prevent valve body 1 pressure greater prevent valve body 1 to close or start more laborious.

[0023] Specifically, the inside of the shell 3 is installed through the mandrel 5, one end of the mandrel 5 is installed with the handle rod 6, the outside of the mandrel 5 is sleeved with the gear 7, the valve cover 2 and the shell 3 are penetrated by the valve rod shaft 8, one side of the valve rod shaft 8 is embedded with the rack 9, the gear 7 is engaged with the rack 9, the outside of the valve rod shaft 8 and the connection between the valve cover 2 and the shell 3 is installed with the connector 10, the inside of the valve cover 2 and the outside of the valve rod shaft 8 is installed with the spring 11, one end of the valve rod shaft 8 and one end of the spring 11 is installed with the connecting block 12, the outside of the connecting block 12 is installed with the valve flap block 13, one side of the valve flap block 13 is installed with the valve flap flat film 14, one end of the valve cover 2 is embedded with the sealing ring 17, the inside of the valve cover 2 and the outside of the valve rod shaft 8 is arranged with multiple guide rods 18, the guide rods 18 penetrate the valve flap block 13 and are slidably connected with it, the sealing ring 17 is embedded with the valve body 1 on one side, the valve rod shaft 8 penetrates the connector 10 and is slidably connected with it.

[0024] Among them, the sealing ring 17 can seal between the valve body 1 and the valve cover 2, the handle rod 6 can rotate the gear 7 outside the mandrel 5, the gear 7 can drive the valve rod shaft 8 to slide through the valve body 1 and the valve cover 2, the spring 11 in the valve cover 2 can extrude and push the valve flap block 13 through the connecting block 12, multiple guide rods 18 can support and guide the valve flap block 13, prevent the valve flap block 13 from shifting or shaking, the valve rod shaft 8 and the valve flap block 13 are driven by the relaxation of the spring 11 to move downward, at the same time, the valve flap flat film 14 on one side of the valve flap block 13 moves to the cutoff in the valve body 1, so that the valve flap flat film 14 is tightly closed with the cutoff in the valve body 1, so that the valve body 1 remains closed.

[0025] Working principle: rotate the handle clockwise, make it drive the mandrel 5 to move clockwise, at the same time, the mandrel 5 drives the gear 7 to drive the rack 9 to move upward, at the same time, the rack 9 drives the valve rod shaft 8 to move, at the same time, the valve rod shaft 8 drives the valve flap block 13 on one side of the connecting block 12 to move upward, at the same time, the valve flap block 13 compresses the spring 11 arranged between the valve flap and the valve cover 2, then the magnetic adsorption force generated by the neodymium iron boron permanent magnet in the electromagnet assembly 16 locks the adsorption disc 15 arranged at one end of the valve rod shaft 8, so that the valve body 1 is opened and locked in the open state.

[0026] In addition, the valve body 1 is connected to the 24V power supply through the external cable on the shell 3, when the power is turned on, the winding coil generates an electromagnetic field opposite to the layout of the permanent magnet, and the magnetic adsorption force of the permanent magnet is mutually offset, so as to release the adsorption locking state of the adsorption disc 15 by the electromagnet assembly 16, under the relaxation of the spring 11, the valve rod shaft 8 drives the valve flap block 13 to move vertically downward, until the cutoff in the valve body 1 is tightly combined with the valve flap flat film 14, so as to achieve the closed and locked closed state of the valve body 1.

[0027] The contents not described in detail in the description belong to the prior art known to those skilled in the art.

[0028] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A gear and rack type mechanical electromagnetic gas emergency shut-off valve, comprising a valve body (1) of the shut-off valve, characterized in that: A valve cover (2) is installed on one side of the valve body (1) by multiple bolts. A housing (3) is installed on one side of the valve cover (2) by multiple bolts. A module box (4) is installed on one side of the housing (3). A drive component for controlling the opening and closing of the valve body (1) is installed inside the housing (3). The drive unit includes a spindle (5) installed through the inside of the housing (3), a handle rod (6) installed at one end of the spindle (5), a gear (7) fitted on the outside of the spindle (5), a valve stem shaft (8) passing through the valve cover (2) and the housing (3), a rack (9) embedded on one side of the valve stem shaft (8), the gear (7) meshing with the rack (9), a connector (10) installed on the outside of the valve stem shaft (8) and at the connection between the valve cover (2) and the housing (3), the valve stem shaft (8) passing through the connector (10) and slidingly connected to it.

2. The gear and rack type mechanical electromagnetic gas emergency shut-off valve according to claim 1, characterized in that: A spring (11) is installed inside the valve cover (2) and outside the valve stem shaft (8). A connecting block (12) is installed at one end of the valve stem shaft (8) and at one end of the spring (11). A valve disc block (13) is installed outside the connecting block (12).

3. The gear and rack type mechanical electromagnetic gas emergency shut-off valve according to claim 2, characterized in that: A valve disc flat diaphragm (14) is installed on one side of the valve disc block (13).

4. A gear and rack type mechanical electromagnetic gas emergency shut-off valve according to claim 2, characterized in that: The valve stem shaft (8) is connected to an adsorption plate (15) at the other end, and an electromagnet assembly (16) is installed inside the housing (3) and near one end.

5. A gear and rack type mechanical electromagnetic gas emergency shut-off valve according to claim 1, characterized in that: A sealing ring (17) is embedded at one end of the valve cover (2), and the sealing ring (17) is fitted into one side of the valve body (1).

6. A gear and rack type mechanical electromagnetic gas emergency shut-off valve according to claim 4, characterized in that: Multiple guide rods (18) are arranged circumferentially on the inner side of the valve cover (2) and on the outer side of the valve stem shaft (8). The guide rods (18) pass through the valve disc block (13) and are slidably connected to it.

Images