Electromagnetic valve with emergency release function

Abstract

The utility model relates to the field of hydraulic transmission, in particular to an electromagnetic valve with an emergency release function, which comprises an emergency release component (1), an electromagnet (2), an iron core (3) and a valve seat (4). The valve seat (4) is provided with a valve seat hole, the front end of the iron core (3) is in sliding fit with the valve seat hole, the rear end of the valve core (3) is in sliding fit with an inner hole of the magnetic circuit framework, the electromagnet (2) is arranged on the magnetic circuit framework, one end of the first spring makes contact with the rear end face of the valve core (3), the other end of the first spring penetrates through a middle hole of the electromagnet (2) to make contact with the emergency release assembly (1), and the electromagnet (2) is connected with the emergency release assembly (1). The electromagnetic valve has the advantages of being fast in response, low in inner leakage, high in reliability and the like, meanwhile, the electromagnetic valve can be kept in an open state under the condition that a system cannot supply power, the safety protection effect is achieved, and the engineering application prospect is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hydraulic transmission, especially to an electromagnetic valve with emergency release function. BACKGROUND

[0002] With the continuous development of hydraulic equipment technology, the demand for developing hydraulic equipment with high reliability and fast response speed is also increasing. Currently, electromagnetic valves are widely used in the hydraulic systems of various types of hydraulic equipment. Therefore, developing electromagnetic valves with fast response, high flow requirement, and low internal leakage can occupy a dominant position in the increasingly fierce market competition. Currently, there is a lack of electromagnetic valves with emergency release function in hydraulic equipment. Based on this, the utility model develops an electromagnetic valve with emergency release function, which can be widely used in aerospace, engineering machinery, and metallurgical ships, and is used to solve the emergency situation when the hydraulic system is powered off. SUMMARY

[0003] The utility model solves the technical problem: the utility model provides an electromagnetic valve with emergency release function, the utility model can realize the on-off of the electromagnetic valve when the system cannot be normally powered, and simultaneously has the characteristics of small size, light weight, and fast response, and can be widely used in the pre-stage of the reversing valve, various integrated valves, and widely used in the fields of aerospace, engineering machinery, and metallurgical ships.

[0004] Technical scheme of the utility model

[0005] An electromagnetic valve with emergency release function, comprising an emergency release assembly 1, an electromagnet 2, a core 3, and a valve seat 4.

[0006] The valve seat 4 is provided with a valve seat hole, the front end of the core 3 is in sliding cooperation with the valve seat hole, the rear end of the core 3 is in sliding cooperation with the inner hole of the magnetic circuit framework, the electromagnet 2 is arranged on the magnetic circuit framework, one end of the spring is in contact with the rear end surface of the core 3, the other end passes through the middle hole of the electromagnet 2 and is in contact with the emergency release assembly 1, and the electromagnet 2 is connected with the emergency release assembly 1.

[0007] Further, a filter screen is arranged at the end of the valve seat 4.

[0008] Further, a protective sleeve 5 is sleeved on the end of the valve seat 4, and the protective sleeve 5 can be removed when the electromagnetic valve is used. The protective sleeve is only used during transportation and storage.

[0009] Further, a positioning pin for preventing misinsertion is arranged on the end face of the magnetic circuit framework, so as to ensure that the oil passage hole on the valve seat 4 corresponds to the oil supply hole of the upper system.

[0010] Further, an elastic stop ring is arranged between the mounting shell of the electromagnet 2 and the electromagnet body.

[0011] Further, the emergency release assembly 1 comprises a handle 11, a positioning pin 12, a nut 13, a spring 14, and a pull rod 15, the nut 13 of the emergency release assembly 1 is connected with the inner thread of the rear end of the electromagnet 2 through the outer thread, the pull rod 15 is arranged in the nut 13, one end of the pull rod 15 is connected with the handle 11 through the positioning pin 12, the other end of the pull rod 15 is in contact with the spring 1, the spring 14 is sleeved on the pull rod 15, and one end of the spring 14 is in contact with the inner hole wall surface of the nut 13, and the other end of the spring 14 is in contact with the end of the pull rod.

[0012] Further, the electromagnet 2 is internally provided with a threaded hole matched with the nut 13, three U-shaped grooves are arranged along the axial direction of the threaded hole 22, and a ring groove is arranged at the bottom of the threaded hole 22.

[0013] Further, one end of the pull rod 15 is provided with a pin hole, the other end of the pull rod 15 is provided with an end face disc, three teeth are uniformly distributed on the end face disc, the positions of the three teeth correspond to the three U-shaped grooves and are respectively in sliding fit with the three U-shaped grooves, and the end face disc can drive the teeth to rotate in the ring groove, so that the end face disc of the pull rod 15 is clamped with the inner hole of the rear end of the electromagnet.

[0014] Beneficial effects

[0015] The electromagnetic valve with the emergency release function has the characteristics of fast response, low internal leakage, high reliability and the like, can keep the electromagnetic valve in an open state when the system cannot be powered, and further plays a safety protection role, and has wide engineering application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model.

[0017] Figure 2 It is an emergency release assembly structure schematic view of the utility model.

[0018] Figure 3 It is a pull rod schematic view. DETAILED DESCRIPTION

[0019] The features and illustrative embodiments of each aspect of the present application will be described below in detail. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without some or all of these specific details. The following description of the embodiments is merely exemplary in nature and is provided to give a better understanding of the present application. The present application as described herein is not limited to any particular set of the specific features and methods as set forth below, but covers any improvements, substitutions and modifications of structure, method, device, which do not depart from the spirit of the present application. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessary obscurity of the present application.

[0020] It should be noted that the features of the embodiments of the present application and the embodiments can be combined with each other without conflict, and each embodiment can be mutually referenced and quoted. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] As shown in the drawings, Figure 1 An electromagnetic valve with emergency release function, comprising an emergency release assembly 1, an electromagnet 2, a core 3, a valve seat 4;

[0022] The valve seat 4 is provided with a valve seat hole, the front end of the core 3 is in sliding fit with the valve seat hole, the rear end of the core 3 is in sliding fit with the inner hole of the magnetic circuit framework, the electromagnet 2 is arranged on the magnetic circuit framework, one end of the spring is in contact with the rear end face of the core 3, the other end passes through the middle hole of the electromagnet 2 and is in contact with the emergency release assembly 1, the electromagnet 2 is connected with the emergency release assembly 1, and the end portion of the valve seat 4 is provided with a filter screen, so that the system oil entering the valve seat 4 is kept clean and does not contain impurities.

[0023] In the present application, a protective sleeve 5 is sleeved on the end portion of the valve seat 4, and the protective sleeve 5 can be removed when the electromagnetic valve is used. The protective sleeve is only used during transportation and storage.

[0024] In the present application, the end face of the magnetic circuit framework is provided with a positioning pin for preventing misinsertion, so as to ensure that the oil passage hole on the valve seat 4 corresponds to the oil supply hole of the upper system. The positioning pin cooperates with the oil supply hole of the upper system to ensure that the oil passage hole on the valve seat 4 corresponds to the oil supply hole of the upper system.

[0025] In the present application, an elastic stop ring is arranged between the mounting shell of the electromagnet 2 and the electromagnet body, so as to ensure that the mounting shell of the electromagnet 2 and the electromagnet body do not rotate relative to each other.

[0026] As shown in the drawings, Figure 2As shown, the emergency release assembly 1 includes a handle 11, a positioning pin 12, a nut 13, a spring 14, a pull rod 15, the nut 13 of the emergency release assembly 1 is connected with the inner thread of the rear end of the electromagnet 2 through the outer thread, the pull rod 15 is arranged in the nut 13, one end of the pull rod 15 is connected with the handle 11 through the positioning pin 12, the other end of the pull rod 15 is in contact with the spring 1, the spring 14 is sleeved on the pull rod 15, and one end of the spring 14 is in contact with the inner hole wall surface of the nut 13, and the other end of the spring 14 is in contact with the end part of the pull rod. The electromagnet 2 is internally provided with a threaded hole matched with the nut 13, three U-shaped grooves are arranged along the axial direction of the threaded hole 22, and the bottom of the threaded hole 22 is provided with an annular groove, and the three U-shaped grooves are communicated with the annular groove.

[0027] As shown in the figure, Figure 3 As shown, one end of the pull rod 15 is provided with a pin hole, and the other end is provided with an end face disc, three teeth are uniformly distributed on the end face disc, the positions of the three teeth correspond to the three U-shaped grooves, and the three teeth are respectively in sliding fit with the three U-shaped grooves, and the end face disc can drive the teeth to rotate in the annular groove, so that the end face disc of the pull rod 15 is clamped with the inner hole of the rear end of the electromagnet.

[0028] After the hydraulic oil is supplied to the electromagnetic valve from the left filter screen, before the connector is powered, the spring 1 makes the iron core 3 bear a horizontal leftward force under the action of the compression force, at this time, the electromagnetic valve 2 is in a closed state, when the electromagnetic valve 2 is powered, with the increase of the voltage, the electromagnetic force gradually increases, when the electromagnetic force exceeds the force of the spring 1, the iron core 3 will move to the left under the action of the electromagnetic force, at this time, the electromagnetic valve 2 is in an open state.

[0029] When the hydraulic system is powered off, the electromagnetic valve cannot be powered, the emergency release assembly 1 is rotated to the limit position at the right end, and then the pull rod is pulled by hand, due to the decrease of the elastic force of the spring 1, the iron core 3 will move to the left, at this time, the electromagnetic valve 2 is in an open state. Therefore, it can be ensured that the electromagnetic valve is still in an open state after the system is powered off.

[0030] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered in the protection scope of the present application.

Claims

1. A solenoid valve with emergency release function, characterized in that: It comprises an emergency release assembly (1), an electromagnet (2), an iron core (3), and a valve seat (4). The valve seat (4) is provided with a valve seat hole, the front end of the iron core (3) is in sliding fit with the valve seat hole, the rear end of the iron core (3) is in sliding fit with the inner hole of a magnetic circuit framework, the electromagnet (2) is arranged on the magnetic circuit framework, one end of a spring is in contact with the rear end face of the iron core (3), the other end passes through the middle hole of the electromagnet (2) and is in contact with the emergency release assembly (1), and the electromagnet (2) is connected with the emergency release assembly (1). The emergency release assembly (1) comprises a handle (11), a positioning pin (12), a nut (13), a spring (14), and a pull rod (15), the nut (13) of the emergency release assembly (1) is connected with the inner thread of the rear end of the electromagnet (2) through the outer thread, the pull rod (15) is arranged in the nut (13), one end of the pull rod (15) is connected with the handle (11) through the positioning pin (12), the other end is in contact with the spring, the spring (14) is sleeved on the pull rod (15), one end of the spring is in contact with the inner hole wall face of the nut (13), and the other end is in contact with the end of the pull rod; a threaded hole is arranged in the electromagnet (2) and matched with the nut (13), three U-shaped grooves are arranged in the threaded hole (22) along the axial direction, a ring groove is arranged at the bottom of the threaded hole (22), and the three U-shaped grooves are communicated with the ring groove; a pin hole is arranged at one end of the pull rod (15), an end face disc is arranged at the other end, three teeth are uniformly distributed on the end face disc, the positions of the three teeth correspond to the three U-shaped grooves and are in sliding fit with the three U-shaped grooves, respectively, and the end face disc can drive the teeth to rotate in the ring groove, so that the end face disc of the pull rod (15) is clamped with the inner hole of the rear end of the electromagnet.

2. The solenoid valve with emergency release function according to claim 1, characterized in that, A filter screen is arranged at the end of the valve seat (4).

3. The solenoid valve with emergency release function according to claim 2, characterized in that, A protective sleeve (5) is arranged at the end of the valve seat (4), and the protective sleeve (5) can be removed when the electromagnetic valve is used, and the protective sleeve is only used during transportation and storage.

4. The solenoid valve with emergency release function according to claim 1, characterized in that, A positioning pin is arranged on the end face of the magnetic circuit framework to prevent misinsertion, so that the oil supply hole of the valve seat (4) corresponds to the oil supply hole of the upper system.

5. The emergency release function-equipped electromagnetic valve according to claim 1, characterized by An elastic check ring is arranged between the mounting shell of the electromagnet (2) and the electromagnet body.

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