Electromagnetic valve for rail transit

Abstract

The utility model belongs to the technical field of electromagnetic valves, and particularly relates to an electromagnetic valve for rail transit, which comprises a mounting pipe and an electromagnetic valve body, a group of supports are fixed above the left end and the right end of the mounting pipe respectively, a worm is mounted at the top end of each support, and the electromagnetic valve body is mounted above the middle of the mounting pipe. A limiting groove is formed in the inner wall of a port of the mounting pipe, a through groove is formed in the middle of the inner wall of the limiting groove, and positioning assemblies are arranged on the outer sides of the left end and the right end of the mounting pipe. The limiting grooves, the through grooves, the extrusion columns, the fixing pieces and the guide grooves are annularly distributed and are in one-to-one correspondence, so that uniform force application on the conveying pipe is facilitated, and the butt joint stability and tightness between the conveying pipe and the mounting pipe can be further improved; the worm can be pressed against and positioned by screwing the locking bolt, and the state stability of the worm, the worm gear piece and the lantern ring can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic valves, in particular to an electromagnetic valve for rail transportation. Background Art

[0002] Solenoid valves are industrial equipment controlled by electromagnetics. They are basic automation components used to control fluids. They are actuators used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. Solenoid valves can be used in conjunction with different circuits to achieve the desired control. Solenoid valves have also been widely used in the construction of rail transit electrical facilities.

[0003] In the Chinese utility model patent with publication number CN212718300U, a solenoid valve for rail transit is disclosed, which solves the problem that most existing solenoid valves do not have a special fixing structure, and most of them are supported and fixed by the pipes connected to them, which has poor stability. When the valve body or the pipe vibrates, it is easy to cause the interface to be damaged, leaking water or air, which seriously affects the service life of the solenoid valve. In addition, when the power is off, the solenoid valve is closed and the pipe cannot be connected, which is inconvenient to use.

[0004] However, the solenoid valve proposed in the above technical solution still lacks a quick-connect structure with the pipeline that is fast, stable, and has a good sealing effect, and generally has the defects of complex installation and low speed. Therefore, it is urgent to improve the existing solenoid valve for rail transit and provide a solenoid valve for rail transit with a quick-connect structure. Utility Model Content

[0005] The purpose of the utility model is to provide a solenoid valve for rail transit with reasonable design, simple structure, quick connection structure, and quick and convenient disassembly and assembly to solve the problems existing in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A solenoid valve for rail transit, comprising a mounting tube and a solenoid valve body, wherein a group of brackets are fixed above both left and right ends of the mounting tube, a worm is installed at the top of the bracket, the solenoid valve body is installed above the middle of the mounting tube, a limiting groove is provided on the inner wall at the port of the mounting tube, a through groove is provided in the middle of the inner wall of the limiting groove, positioning components are provided on the outer sides of both left and right ends of the mounting tube, and conveying components are installed on both left and right ends of the mounting tube.

[0008] As a preferred embodiment, each group of the brackets are arranged symmetrically front and back about the central axis of the mounting tube, the rear bracket is connected to the worm bearing, the front end of the worm is rotatably connected to the front bracket, and a locking bolt is threadedly installed on the top outer wall of the front bracket.

[0009] As a preferred implementation, the limiting grooves are distributed in a ring shape on the inner wall of the port of the mounting tube, and a plurality of the limiting grooves and a plurality of the through grooves are arranged in a one-to-one correspondence.

[0010] As a preferred embodiment, the positioning assembly includes a ring, an extrusion column and a worm gear. The ring bearing is sleeved on the outside of the port of the mounting tube. The inner wall of the ring is fixedly connected with extrusion columns corresponding to the multiple through grooves one by one. The extrusion columns are movably located on the inner side of the through grooves. A worm gear is welded and fixed to the outer wall of the upper end of the ring, and the worm gear is meshed with the worm.

[0011] As a preferred embodiment, the conveying assembly includes a conveying pipe, a fixing plate, a guide groove, a first sealing ring and a second sealing ring. A plurality of the fixing plates are fixed in a ring shape on the outer wall of the conveying pipe, and a guide groove is provided on the outer wall of the fixing plate. A first sealing ring is adhesively sleeved on the outer side of one end of the conveying pipe close to the mounting pipe, and a second sealing ring is bonded to one end of the conveying pipe close to the mounting pipe.

[0012] As a preferred embodiment, the end of the extrusion column away from the ring passes through the through groove and extends to the inner side of the mounting tube, and the end of the extrusion column located on the inner side of the mounting tube is guided and slid in the guide groove, and the guide groove includes a straight section and an inclined section, and the straight section and the inclined section are connected to each other.

[0013] As a preferred implementation, the plurality of fixing plates and the plurality of limiting grooves are in one-to-one correspondence and are adapted to each other, and the fixing plates are engaged and connected with the mounting pipe via the limiting grooves.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the solution of the utility model:

[0016] The delivery pipe is docked with the installation pipe, and multiple fixing plates are respectively engaged with multiple limit grooves corresponding thereto, and the extrusion column can be located at the bend of the guide groove. Then the worm can be manually rotated to control the worm gear to drive the collar and multiple extrusion columns to rotate synchronously, so that the extrusion column can squeeze the inclined section of the guide groove and apply an extrusion thrust toward the installation pipe to the fixing plate, which can not only realize a fast and stable connection between the installation pipe and the delivery pipe, but also can squeeze the second sealing ring, and with the cooperation of the first sealing ring, realize an efficient seal between the installation pipe and the delivery pipe to avoid leakage;

[0017] The limit grooves, through grooves, extrusion columns, fixing plates and guide grooves are all distributed in a ring shape and correspond one to one, so that it is convenient to apply force evenly to the delivery pipe, which can further improve the docking stability and tightness between the delivery pipe and the mounting pipe. In addition, a locking bolt is installed on the top of the front bracket, and the worm can be positioned by tightening the locking bolt to ensure the stability of the worm, worm wheel and ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions, and the following description is made with respect to the drawings:

[0019] Figure 1 This is a three-dimensional front view structural diagram of the utility model;

[0020] Figure 2 It is a left-side structural schematic diagram of the limiting groove and the through groove of the utility model;

[0021] Figure 3 This is a schematic diagram of the overall side view structure of the positioning assembly of the utility model;

[0022] Figure 4 This is a schematic diagram of the overall top view of the conveying assembly of the utility model;

[0023] Figure 5 It is a front view cross-sectional structural diagram of the positioning assembly and the conveying assembly of the utility model;

[0024] Figure 6 It is a schematic diagram of the side cross-sectional structure of the bracket and the worm of the utility model.

[0025] In the figure:

[0026] 1. Mounting tube; 2. Bracket; 3. Worm; 4. Locking bolt; 5. Limiting groove; 6. Through groove; 7. Positioning assembly; 71. Ring; 72. Extrusion column; 73. Worm wheel; 8. Conveying assembly; 81. Conveying tube; 82. Fixing plate; 83. Guide groove; 84. First sealing ring; 85. Second sealing ring; 9. Solenoid valve body. DETAILED DESCRIPTION

[0027] The embodiments described below are only some of the embodiments of the present invention and do not represent all the embodiments consistent with the present invention. Now, in conjunction with the accompanying drawings, the exemplary embodiments are described as follows:

[0028] like Figure 1-6As shown, the utility model solenoid valve for rail transit includes a mounting tube 1 and a solenoid valve body 9, a group of brackets 2 are fixed above the left and right ends of the mounting tube 1, a worm 3 is installed at the top of the bracket 2, the solenoid valve body 9 is installed above the middle of the mounting tube 1, a limiting groove 5 is provided on the inner wall at the port of the mounting tube 1, a through groove 6 is provided in the middle position of the inner wall of the limiting groove 5, positioning components 7 are provided on the outer sides of the left and right ends of the mounting tube 1, and conveying components 8 are installed on the left and right ends of the mounting tube 1.

[0029] Based on the above structure, each group of brackets 2 is arranged symmetrically front and back about the central axis of the mounting tube 1, the rear bracket 2 is connected to the worm 3 bearing, the front end of the worm 3 is rotatably connected to the front bracket 2, and a locking bolt 4 is threadedly installed on the top outer wall of the front bracket 2.

[0030] In this embodiment, the bracket 2 is provided to facilitate installation of the worm 3 , and the locking bolt 4 can be used to perform interference positioning on the worm 3 .

[0031] On the basis of the above structure, the limiting grooves 5 are distributed in a ring shape on the inner wall of the port of the mounting tube 1 , and the plurality of limiting grooves 5 and the plurality of through grooves 6 are arranged in a one-to-one correspondence.

[0032] In this embodiment, the multiple limiting grooves 5 are provided to facilitate the snap-fit ​​connection between the installation tube 1 and the conveying assembly 8 .

[0033] On the basis of the above structure, the positioning assembly 7 includes a collar 71, an extrusion column 72 and a worm gear 73. The collar 71 bearing is sleeved on the outside of the port of the mounting tube 1. The inner wall of the collar 71 is fixedly connected with extrusion columns 72 corresponding to a plurality of through grooves 6. The extrusion columns 72 are movably located on the inner side of the through grooves 6. A worm gear 73 is welded and fixed to the outer wall of the upper end of the collar 71. The worm gear 73 is meshed with the worm 3.

[0034] In this embodiment, by providing the worm gear 73 , it is convenient to control the rotation of the worm 3 , thereby controlling the collar 71 to drive the extrusion column 72 to rotate and adjust.

[0035] On the basis of the above structure, the conveying assembly 8 includes a conveying pipe 81, a fixing plate 82, a guide groove 83, a first sealing ring 84 and a second sealing ring 85. A plurality of fixing plates 82 are fixed in a ring shape on the outer wall of the conveying pipe 81. A guide groove 83 is provided on the outer wall of the fixing plate 82. A first sealing ring 84 is bonded to the outer side of one end of the conveying pipe 81 close to the mounting pipe 1, and a second sealing ring 85 is bonded to one end of the conveying pipe 81 close to the mounting pipe 1.

[0036] In this embodiment, the first sealing ring 84 and the second sealing ring 85 are provided to facilitate sealing between the delivery pipe 81 and the installation pipe 1 .

[0037] On the basis of the above structure, one end of the extrusion column 72 away from the ring 71 passes through the through groove 6 and extends to the inner side of the mounting tube 1. The end of the extrusion column 72 located on the inner side of the mounting tube 1 is guided and slid in the guide groove 83. The guide groove 83 includes a straight section and an inclined section, and the straight section and the inclined section are connected to each other.

[0038] In this embodiment, the guide groove 83 provided on the outer wall of the fixing plate 82 can be used to apply an extrusion thrust toward the mounting tube 1 to the fixing plate 82 when the ring 71 drives the extrusion column 72 to rotate, thereby achieving a quick and stable connection between the mounting tube 1 and the conveying tube 81 and squeezing the second sealing ring 85 to improve the sealing effect between the mounting tube 1 and the conveying tube 81.

[0039] On the basis of the above structure, the plurality of fixing plates 82 correspond to the plurality of limiting grooves 5 one by one and are adapted to each other, and the fixing plates 82 are engaged and connected with the mounting tube 1 through the limiting grooves 5 .

[0040] In this embodiment, the fixing piece 82 fixed on the outer wall of the delivery pipe 81 is used to facilitate the engagement connection between the delivery pipe 81 and the installation pipe 1 through the limiting groove 5 .

[0041] The working principle of the utility model is as follows:

[0042] When in use, first align the multiple fixing plates 82 distributed in an annular shape on the outer wall of the delivery tube 81 with the multiple limiting grooves 5 opened on the inner wall of the port of the installation tube 1, then insert one end of the delivery tube 81 into the interior of the installation tube 1, and make the fixing plate 82 engage with the inner side of the limiting groove 5, at this time, the extrusion column 72 fixed on the inner wall of the collar 71 can enter the straight section of the guide groove 83 on the outer wall of the fixing plate 82, and as the delivery tube 81 and the installation tube 1 are plugged in, the extrusion column 72 can be relatively moved to the bending part of the guide groove 83, and then the worm 3 is manually rotated to control the worm 3 to move. The wheel 73 drives the collar 71 and the plurality of extrusion columns 72 to rotate synchronously along the through groove 6, so that the extrusion columns 72 can squeeze the inclined section of the guide groove 83, thereby applying an extrusion thrust toward the mounting tube 1 to the fixing plate 82 and the delivery tube 81, so as to realize a fast and stable connection between the mounting tube 1 and the delivery tube 81, and the second sealing ring 85 can be squeezed by pushing the delivery tube 81, and with the cooperation of the first sealing ring 84, an efficient seal between the mounting tube 1 and the delivery tube 81 can be realized to avoid leakage at the connection between the two.

[0043] In summary, the present device can not only realize the quick locking installation of the mounting tube 1 and the delivery tube 81, but also improve the sealing effect between the two to avoid leakage, thereby ensuring the stable and safe operation of the solenoid valve, and by tightening the locking bolt 4, the worm 3 and the positioning assembly 7 can also be positioned to improve the connection stability between the mounting tube 1 and the delivery tube 81.

Claims

1. A solenoid valve for rail transit, comprising a mounting tube (1) and a solenoid valve body (9), characterized in that: A set of brackets (2) are fixed above both left and right ends of the mounting tube (1), a worm (3) is installed at the top of the bracket (2), an electromagnetic valve body (9) is installed above the middle of the mounting tube (1), a limiting groove (5) is provided on the inner wall at the end of the mounting tube (1), a through groove (6) is provided at the middle position of the inner wall of the limiting groove (5), and a positioning assembly (7) is provided on the outer side of both left and right ends of the mounting tube (1), the positioning assembly (7) comprises a collar (71), an extrusion column (72) and a worm wheel (73), the collar (71) bearing is sleeved on the outer side of the end of the mounting tube (1), and an extrusion column (72) corresponding to the plurality of through grooves (6) is fixedly connected to the inner wall of the collar (71), and the extrusion column (72) is movably located in the through groove (6) On the inner side, a worm wheel piece (73) is welded and fixed to the outer wall of the upper end of the collar (71), and the worm wheel piece (73) is meshed with the worm (3). Both left and right ends of the mounting tube (1) are equipped with a conveying assembly (8), and the conveying assembly (8) includes a conveying tube (81), a fixing piece (82), a guide groove (83), a first sealing ring (84) and a second sealing ring (85). A plurality of fixing pieces (82) are fixed in an annular shape on the outer wall of the conveying tube (81), and a guide groove (83) is provided on the outer wall of the fixing piece (82). The conveying tube (81) A first sealing ring (84) is provided on the outer side of an adhesive sleeve at one end close to the mounting tube (1), and a second sealing ring (85) is bonded to one end of the delivery tube (81) close to the mounting tube (1). An end of the extrusion column (72) away from the collar (71) passes through the through groove (6) and extends to the inner side of the mounting tube (1). An end of the extrusion column (72) located on the inner side of the mounting tube (1) is guided and slidably located in the guide groove (83), and the guide groove (83) includes a straight section and an inclined section, and the straight section and the inclined section are connected to each other.

2. The solenoid valve for rail transit according to claim 1, characterized in that: Each group of the brackets (2) is symmetrically arranged front and back about the central axis of the mounting tube (1); the rear bracket (2) is connected to the bearing of the worm (3); the front end of the worm (3) is rotationally connected to the front bracket (2); and a locking bolt (4) is threadedly installed on the outer wall of the top end of the front bracket (2).

3. The solenoid valve for rail transit according to claim 1, characterized in that: The limiting grooves (5) are distributed in an annular shape on the inner wall of the port of the mounting tube (1), and a plurality of the limiting grooves (5) and a plurality of the through grooves (6) are arranged in a one-to-one correspondence.

4. The solenoid valve for rail transit according to claim 1, characterized in that: The plurality of fixing plates (82) and the plurality of limiting grooves (5) are in one-to-one correspondence and are mutually adapted, and the fixing plates (82) are snap-fitted and connected to the mounting tube (1) via the limiting grooves (5).

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