Pilot valve driving coil structure

Abstract

The utility model relates to the technical field of pilot valves, and discloses a pilot valve drive coil structure which comprises a valve body, a fixing mechanism is arranged on the back face of the valve body, the fixing mechanism comprises a connecting block, a two-way screw rod, a screw hole clamping block, an installation plate and a clamping groove, the connecting block is fixedly installed on the back face of the valve body, a sliding cavity is formed in the connecting block, and the two-way screw rod is arranged in the sliding cavity. The two ends of the two-way screw are rotationally connected to the two sides of the inner wall of the sliding cavity through bearings. The screw hole clamping block arranged on the outer wall of the two-way screw in a threaded and sleeving mode slides on the inner wall of the sliding cavity, so that the screw hole clamping block is clamped in the deep position of the inner wall of the clamping groove, the valve body can be fixedly installed on the installation plate, the purpose of convenient installation is achieved, the installation time is shortened, the installation cost is reduced, and normal operation and maintenance of equipment are prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of pilot valves, in particular to a driving coil structure of a pilot valve. Background Technique

[0002] A pilot valve is a hydraulic or pneumatic control element that uses a relatively small pilot pressure to control the movement of a larger main valve spool.

[0003] According to the Chinese patent with the publication number "CN211951626U", a pilot-operated solenoid valve is disclosed; the pilot-operated solenoid valve includes a valve body, a valve cover, a diaphragm assembly and an operating rod; the valve cover is hermetically connected to the valve body and encloses a valve cavity, and a first chamber, a second chamber and a main valve hole for communicating the two are formed in the valve cavity. The diaphragm assembly is located in the valve cavity, and the edge of the diaphragm assembly is press-fitted between the valve cover and the valve body, and the diaphragm assembly can hermetically seal the main valve hole. One end of the operating rod is movably connected to the valve body, and the other end of the operating rod is located in the valve body and extends in the direction of the diaphragm assembly; the operating rod can reciprocate in the valve body along its own length direction to approach or move away from the diaphragm assembly. When the operating rod moves a certain distance in the direction of approaching the diaphragm assembly, the end of the operating rod facing the diaphragm assembly will fit with the diaphragm assembly and push the diaphragm assembly away from the main valve hole, so that the main valve hole is opened to open the pilot-operated solenoid valve and ensure the smooth flow path. The above-mentioned pilot valve is not provided with a fixing structure, and the existing pilot valves often have problems of difficult positioning and inconvenient installation during the installation process, which not only increases the installation time and cost, but also may affect the normal operation and maintenance of the equipment. Therefore, a driving coil structure of a pilot valve is proposed to solve the above-mentioned problems. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a driving coil structure of a pilot valve aiming at the deficiencies in the above-mentioned prior art.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is: a driving coil structure of a pilot valve, including a valve body, a fixing mechanism is arranged on the back of the valve body, the fixing mechanism includes a connecting block, a bidirectional screw, a screw hole block, a mounting plate and a card slot, the connecting block is fixedly installed on the back of the valve body, a sliding cavity is opened inside the connecting block, both ends of the bidirectional screw are rotatably connected to both sides of the inner wall of the sliding cavity through bearings, the screw hole block is threadedly sleeved on the outer wall of the bidirectional screw and slidably connected to the inner wall of the sliding cavity, the mounting plate is arranged on the back of the connecting block, and the card slot is opened on the front surface of the mounting plate, and the card slot is adapted to the screw hole block.

[0006] Preferably, the fixing mechanism further includes positioning holes, and the positioning holes are opened at the four corners of the mounting plate. Through this preference, the mounting plate can be positioned and installed at a specified position through the positioning holes.

[0007] Preferably, the fixing mechanism further includes a worm and a worm gear. The bottom end of the worm is rotatably connected to the bottom of the inner wall of the sliding cavity through a bearing. The worm gear is fixedly sleeved on the outer wall of the bidirectional screw, and the worm gear is meshed with the worm. Through this preference, the worm rotates, thereby driving the worm gear meshed on the outer wall of the worm to rotate.

[0008] Preferably, the fixing mechanism further includes a screwing block, and the screwing block is fixedly installed at the top end of the worm. Through this preference, by using a tool to rotate the screwing block, the worm is driven to rotate.

[0009] Preferably, a pilot mechanism is further provided on the valve body. The pilot mechanism includes a magnetic core and a coil. The magnetic core is installed inside the valve body, and the coil is wound around the outer wall of the magnetic core. Through this preference, a magnetic field is generated when an electric current passes through the coil, and the role of the magnetic core is to enhance and guide the magnetic field.

[0010] Preferably, the pilot mechanism further includes a power supply device, and the power supply device is connected to the coil through a power connection terminal. Through this preference, the power supply device supplies power to the coil through the power connection terminal.

[0011] Adopting the above technical solutions, the present utility model can bring the following beneficial effects:

[0012] 1. For this pilot valve drive coil structure, through the cooperation of the connecting block, bidirectional screw, screw hole block, mounting plate, card slot, positioning hole, worm, worm gear, and screwing block, the screw hole block sleeved on the outer wall of the bidirectional screw slides on the inner wall of the sliding cavity, so that the screw hole block is clamped deep inside the inner wall of the card slot, thereby the valve body can be fixedly installed on the mounting plate, and then the purpose of convenient installation is achieved, which reduces the installation time and cost and avoids affecting the normal operation and maintenance of the equipment.

[0013] 2. For this pilot valve drive coil structure, through the cooperation of the magnetic core, coil, and power supply device, a magnetic field is generated when an electric current passes through the coil. The role of the magnetic core is to enhance and guide the magnetic field, and the generated electromagnetic force will overcome the spring force or other resistances, causing the spool in the valve body to move, thereby opening the pilot channel to facilitate subsequent control of the opening and closing of the main valve. Brief Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic side sectional structural diagram of the present utility model;

[0016] Figure 3 is a schematic rear sectional structural diagram of the present utility model;

[0017] Figure 4This is a schematic diagram of the mounting plate structure of the present utility model.

[0018] In the figure: 1, valve body; 21, fixing mechanism; 211, connecting block; 212, bidirectional screw; 213, screw hole block; 214, mounting plate; 215, card slot; 216, positioning hole; 217, worm; 218, worm gear; 219, screwing block; 31, pilot mechanism; 311, magnetic core; 312, coil; 313, power supply device. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "several" means two or more, unless otherwise clearly and specifically defined.

[0023] Please refer to Figures 1-4, an embodiment of the present utility model is: a pilot valve drive coil structure, including a valve body 1, a fixing mechanism 21 is arranged on the back of the valve body 1, the fixing mechanism 21 includes a connecting block 211, a bidirectional screw 212, a screw hole block 213, a mounting plate 214, and a card slot 215. The connecting block 211 is fixedly installed on the back of the valve body 1, a sliding cavity is opened inside the connecting block 211, both ends of the bidirectional screw 212 are rotationally connected to both sides of the inner wall of the sliding cavity through bearings, the screw hole block 213 is threadedly sleeved on the outer wall of the bidirectional screw 212 and is slidably connected to the inner wall of the sliding cavity, the mounting plate 214 is arranged on the back of the connecting block 211, and the card slot 215 is opened on the front of the mounting plate 214. The card slot 215 is adapted to the screw hole block 213. The fixing mechanism 21 further includes positioning holes 216, and the positioning holes 216 are opened at the four corners of the mounting plate 214. The fixing mechanism 21 further includes a worm 217 and a worm gear 218. The bottom end of the worm 217 is rotationally connected to the bottom of the inner wall of the sliding cavity through a bearing, the worm gear 218 is fixedly sleeved on the outer wall of the bidirectional screw 212, and the worm gear 218 is meshed with the worm 217. The fixing mechanism 21 further includes a turning block 219, and the turning block 219 is fixedly installed at the top end of the worm 217;

[0024] Working principle: The mounting plate 214 can be positioned and installed at a specified position through the positioning holes 216. Subsequently, the connecting block 211 fixedly installed on the back of the valve body 1 is connected to the mounting plate 214, so that the screw hole block 213 can be inserted into the inner wall of the card slot 215. Subsequently, a tool is used to rotate the turning block 219, so that the worm 217 is driven to rotate, thereby driving the worm gear 218 meshed with the outer wall of the worm 217 to rotate. Then, the bidirectional screw 212 fixedly sleeved on the inner wall of the worm gear 218 is driven to rotate, so that the screw hole block 213 threadedly sleeved on the outer wall of the bidirectional screw 212 slides on the inner wall of the sliding cavity, so that the screw hole block 213 is clamped deep in the inner wall of the card slot 215, so that the valve body 1 can be fixedly installed on the mounting plate 214, and the purpose of convenient installation is achieved.

[0025] Please refer to Figures 1-4 , on the basis of the above embodiment, in another embodiment of the present utility model, a pilot mechanism 31 is further arranged on the valve body 1. The pilot mechanism 31 includes a magnetic core 311 and a coil 312. The magnetic core 311 is installed inside the valve body 1, and the coil 312 is wound around the outer wall of the magnetic core 311. The pilot mechanism 31 further includes a power supply device 313, and the power supply device 313 is connected to the coil 312 through a power connection terminal.

[0026] Working principle: The power supply device 313 supplies power to the coil 312 through the power connection terminal. When there is current passing through the coil 312, a magnetic field will be generated. The role of the magnetic core 311 is to enhance and guide the magnetic field. The generated electromagnetic force will overcome the spring force or other resistances, so that the spool in the valve body 1 moves, thereby opening the pilot channel to facilitate the subsequent control of the opening and closing of the main valve.

[0027] The present utility model provides a pilot valve drive coil structure. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. Each component not clearly defined in this embodiment can be implemented by using the prior art.

Claims

1. A pilot valve drive coil structure, comprising a valve body (1), characterized in that: A fixing mechanism (21) is arranged on the back of the valve body (1), and the fixing mechanism (21) comprises a connecting block (211), a bidirectional screw (212), a screw hole block (213), a mounting plate (214), and a slot (215). The connecting block (211) is fixedly mounted on the back of the valve body (1), a sliding cavity is provided inside the connecting block (211), two ends of the bidirectional screw (212) are rotatably connected to two sides of the inner wall of the sliding cavity through bearings, the screw hole block (213) is threadedly sleeved on the outer wall of the bidirectional screw (212) and slidably connected to the inner wall of the sliding cavity, the mounting plate (214) is arranged on the back of the connecting block (211), and the slot (215) is provided on the front of the mounting plate (214), and the slot (215) is adapted to the screw hole block (213).

2. A pilot valve drive coil structure according to claim 1, characterized in that: The fixing mechanism (21) further comprises positioning holes (216), wherein the positioning holes (216) are formed at four corners of the mounting plate (214).

3. The pilot valve drive coil structure according to claim 1, characterized in that: The fixing mechanism (21) further comprises a worm (217) and a worm wheel (218); the bottom end of the worm (217) is rotatably connected to the bottom of the inner wall of the sliding cavity via a bearing; the worm wheel (218) is fixedly sleeved on the outer wall of the bidirectional screw (212); and the worm wheel (218) is meshingly connected to the worm (217).

4. The pilot valve drive coil structure according to claim 1, characterized in that: The fixing mechanism (21) further comprises a screw block (219), wherein the screw block (219) is fixedly mounted on the top end of the worm (217).

5. The pilot valve drive coil structure according to claim 1, characterized in that: The valve body (1) is also provided with a pilot mechanism (31), the pilot mechanism (31) comprising a magnetic core (311) and a coil (312), the magnetic core (311) being installed inside the valve body (1), and the coil (312) being wound around the outer wall of the magnetic core (311).

6. A pilot valve drive coil structure according to claim 5, characterized in that: The pilot mechanism (31) further comprises a power supply device (313), and the power supply device (313) is connected to the coil (312) via a power connection terminal.

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