Multi-way valve only capable of working independently

Abstract

The utility model discloses a multi-way valve only capable of working independently, and relates to a multi-way valve. Comprising an oil inlet unit, a working unit and a cover plate, the oil inlet unit and the cover plate are arranged on the left side and the right side of the working unit respectively, and the working unit adopts a plurality of valve plates connected in series; the valve plate comprises a valve body and a valve core, the valve core is arranged in the valve body, and the valve core is connected with the valve rod in the electromagnet; and an oil return opening is formed in the cover plate. The utility model supports single-path work, and has the advantages of high safety, strong practicability and long service life.

Description

Technical Field

[0001] The utility model relates to a multi-way valve, in particular to a multi-way valve which can only work alone. Background Art

[0002] The multi-way control valve is a hydraulic component that is widely used in the hydraulic industry. However, only a type of multi-way control valve that can work simultaneously can be used on the market. However, there are some special cases in actual use. When some structures are working, only a single-way operation is allowed, and the other components cannot work. The utility model is mainly aimed at such a situation. In actual work, only a single-way operation is supported. If one solenoid valve is working, even if an accidental touch occurs, the solenoid valve will not operate, thereby ensuring the safety of work and eliminating problems caused by misoperation. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a multi-way valve that can only work alone, supports single-way work, has high safety, strong practicality and long service life.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a multi-way valve that can only work alone, including an oil inlet joint, a working joint and a cover plate, the left and right sides of the working joint are respectively provided with an oil inlet joint and a cover plate, the working joint adopts a plurality of valve plates connected in series; the valve plate includes a valve body and a valve core, the valve body is provided with a valve core, and the valve core is connected to a valve stem in an electromagnet; the cover plate is provided with an oil return port.

[0005] Preferably, the oil inlet connection is equipped with a plug-in overflow valve.

[0006] Preferably, the working connections all adopt a three-position four-way structure.

[0007] Preferably, the working joint adopts a plate valve structure.

[0008] The beneficial effects of the utility model are as follows:

[0009] 1. The utility model completely solves the special usage requirements. At the same time, the fool-style operation principle eliminates unnecessary risks such as accidental touch, greatly increases work safety, and reduces the risk of human error.

[0010] 2. The utility model structurally adopts the method of realizing this function on the valve stem. Compared with the method of realizing it on the valve body, the cost and processing difficulty are greatly reduced. At the same time, it is easier to replace and maintain, and the size and appearance are more compact.

[0011] 3. Implementing it on the valve core allows us to use some of the original structure, making the product more mature and allowing the valve core to be machined with higher precision, thus increasing product life.

[0012] 4. Compared with the use of a three-position six-way structure to achieve this function, the use of a three-position four-way structure greatly reduces the cost and greatly improves the product qualification rate. The valve adopts a plate structure, and users have more diverse choices and product variations. Therefore, this invention takes the three-way valve as an example but is not limited to the three-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is described in detail below with reference to the accompanying drawings and specific implementation methods;

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is the principle diagram of the utility model;

[0016] Figure 3 It is a cross-sectional view of the working joint of the utility model;

[0017] Figure 4 for Figure 1 Flip diagram of . DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] Reference Figure 1-4 The present specific implementation adopts the following technical scheme: a multi-way valve that can only work alone, including an oil inlet connection 1, a working connection 2 and a cover plate 3, the left and right sides of the working connection 2 are respectively provided with an oil inlet connection 1 and a cover plate 3, the working connection 2 adopts a plurality of valve plates connected in series; the valve plate includes a valve body 21 and a valve core 22, a valve core 22 is provided in the valve body 21, and the valve core 22 is connected to a valve stem 24 in an electromagnet 23; an oil return port is provided on the cover plate 3.

[0020] It is worth noting that the oil inlet connection 1 is equipped with a plug-in overflow valve.

[0021] In addition, the working links 2 all adopt a three-position four-way structure.

[0022] Working principle of this specific implementation method: The working link of this specific implementation method is not limited to the three-way link. A plug-in overflow valve is installed on the oil inlet link 1 to ensure the safety of the entire system and prevent accidents in the actual process from causing damage to the machine due to excessive pressure. The working link 2 is a multi-way valve action control element, and single-way operation is achieved by it. There is an oil return port on the cover plate 3 for oil return processing.

[0023] Depend on Figure 2 It can be seen that the oil enters from the P port and reaches the working joint part. The single-channel control is realized by designing the working joint valve stem. From the schematic diagram, it can be seen that the various parts of the working joint are connected in series. It can be seen that the valve only supports one-way operation. When one of the joints is working, the oil cannot continue to be supplied to the rear, resulting in the inability to move the working parts no matter how the operation is performed. Therefore, the losses caused by erroneous operations such as accidental touch during work are completely solved.

[0024] like Figure 3 As shown, after the oil enters from the P port, it can be seen from the structure of the valve stem that the P port and the T port are interconnected when the solenoid valve is in the middle position. It can also be seen from the principle that each working link is a series structure at this time. Through the structure of the valve core, such a function is realized. When the valve core is switched, the oil will flow out from the A / B port, resulting in no oil behind, so the action cannot be realized. The valve core structure adopts a brazing process and is composed of two components combined together to ensure that the function of the valve core can meet the requirements of the entire valve, and the cylindricity of the valve stem is required to be within 0.003mm. The high precision can greatly improve the service life and flexibility of the valve.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-way valve that can only work alone, characterized in that: The invention comprises an oil inlet joint (1), a working joint (2) and a cover plate (3), wherein the oil inlet joint (1) and the cover plate (3) are respectively arranged on the left and right sides of the working joint (2), and the working joint (2) adopts a plurality of valve plates connected in series; the valve plate comprises a valve body (21) and a valve core (22), a valve core (22) is arranged in the valve body (21), and the valve core (22) is connected to a valve stem (24) in an electromagnet (23); and an oil return port is arranged on the cover plate (3).

2. A multi-way valve capable of working only individually according to claim 1, characterized in that: The oil inlet connection (1) is equipped with a plug-in overflow valve.

3. A multi-way valve capable of working only individually according to claim 1, characterized in that: The working links (2) all adopt a three-position four-way structure.

4. A multi-way valve capable of working only individually according to claim 1, characterized in that: The working joint (2) adopts a plate valve structure.

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