Sheet type multi-way valve with manual reversing device

Abstract

The utility model discloses a sheet type multi-way valve with a hand-operated reversing device, which comprises a plurality of valve blocks arranged side by side, a valve core matched with the valve block is connected in a valve cavity in a sliding manner, one end of each valve block is fixedly provided with a conversion shell, the outer end of the conversion shell is provided with an electromagnet a, and the other end of each valve block is provided with an electromagnet b; a coaxial connecting rod is fixedly installed in the middle of the valve element and axially extends into the conversion shell, an inner cavity of the conversion shell is slidably connected with a matched ejector pin sleeve, the ejector pin sleeve axially slides to push the connecting rod, the electromagnet a is provided with an extending ejector pin, the end of the ejector pin abuts against the connecting rod, and an operating rod is installed on the side face of the conversion shell through a rotating shaft. A radial ejector pin sleeve is installed at the inner end of the rotating shaft, a groove is formed in the outer side of the ejector pin sleeve, and the movable end of the transmission rod is inserted into the groove. According to the multi-way valve, manual reversing can be achieved by pulling the operating rod under the condition of power loss, the multi-way valve can be suitable for a double-acting multi-way valve, and in addition, the multi-way valve is compact in structure, small in occupied space and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valve groups, and specifically relates to a wafer type multi-way valve with a manual reversing device. Background Technique

[0002] Most wafer type multi-way valves on the market achieve the change of the movement direction of the spool by relying on the electromagnetic force after the coil is energized. This method has the characteristics of fast response speed and simple structure. However, when the coil or power supply fails, the mechanism will not be able to work normally, thus affecting the work efficiency. For the above problems, in the prior art, there are also multi-way valves with both electromagnetic switching and manual switching. For example, the Chinese utility model with the publication number CN218479992U discloses a manual and explosion-proof electro-hydraulic proportional control load-sensitive multi-way valve, which installs a handle on the manual hydraulic control end cover to achieve manual reversing. This method can only be applied to single-acting multi-way valves and has certain limitations. Content of the Utility Model

[0003] The purpose of the utility model is to provide a wafer type multi-way valve with a manual reversing device to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A wafer type multi-way valve with a manual reversing device, including a plurality of valve blocks arranged side by side. A valve cavity runs through horizontally in the valve block, and a spool adapted to it is slidably connected in the valve cavity. One end of the valve block is fixedly installed with a conversion shell, an electromagnet a is installed at the outer end of the conversion shell, and an electromagnet b is installed at the other end of the valve block. The electromagnet a and the electromagnet b play a driving and controlling role on the spool in a two-way manner. A coaxial connecting rod is fixedly installed in the middle of the spool. The connecting rod axially extends into the conversion shell. A thimble sleeve adapted to it is slidably connected in the inner cavity of the conversion shell. The end of the thimble sleeve contacts the end of the connecting rod. The electromagnet a is provided with a protruding thimble. The end of the thimble abuts on the connecting rod, and the thimble penetrates through the middle of the thimble sleeve. A control lever is installed on the side of the conversion shell through a rotating shaft. A radial transmission rod is installed at the inner end of the rotating shaft. A groove is provided on the outer side of the thimble sleeve, and the movable end of the transmission rod is inserted into the groove.

[0005] Preferably, the movable end of the transmission rod is spherical, and the movable end of the transmission rod is in clearance fit with the groove.

[0006] Preferably, return springs a that apply thrust to both ends of the spool are provided, and return springs b that apply thrust to both ends of the thimble sleeve 9 are provided.

[0007] Compared with the prior art, the beneficial effects of the utility model are as follows: when power is lost, the utility model can achieve manual commutation by pulling the operating lever, and can be applied to a double-acting multi-way valve. In addition, the structure of this multi-way valve is compact, occupying a small space and being convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic cross-sectional structure diagram of the utility model;

[0009] Figure 2 is a schematic three-dimensional structure diagram of the utility model.

[0010] In the figure: 1, valve block; 2, valve core; 3, conversion shell; 4, electromagnet a; 5, electromagnet b; 6, operating lever; 7, connecting rod; 8, ejector pin; 9, ejector pin sleeve; 10, transmission rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to 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.

[0012] Please refer to Figure 1-2 , the present utility model provides a technical solution: a wafer-type multi-way valve with a manual commutation device, including a plurality of valve blocks 1 arranged side by side. A horizontally penetrating valve cavity is provided in the valve block 1, and a valve core 2 adapted thereto is slidably connected in the valve cavity. Reset springs a for applying thrust to both ends of the valve core 2 are provided. A conversion shell 3 is fixedly installed at one end of the valve block 1, an electromagnet a 4 is installed at the outer end of the conversion shell 3, and an electromagnet b 5 is installed at the other end of the valve block 1. The electromagnet a 4 and the electromagnet b 5 perform driving control with a two-way effect on the valve core 2, and the axial movement of the valve core 2 can achieve the commutation of the liquid path.

[0013] A coaxial connecting rod 7 is fixedly installed in the middle of the valve core 2. The connecting rod 7 axially extends into the conversion housing 3. A mating thimble sleeve 9 is slidably connected in the inner cavity of the conversion housing 3. The end of the thimble sleeve 9 contacts the end of the connecting rod 7. Return springs b for applying thrust to both ends of the thimble sleeve 9 are provided. After the thimble sleeve 9 moves, it is pushed by the return springs b to achieve reset. Axial sliding of the thimble sleeve 9 can push the connecting rod 7. The electromagnet a4 is provided with a protruding thimble 8. The end of the thimble 8 abuts on the connecting rod 7. The thimble 8 penetrates through the middle of the thimble sleeve 9 and has a clearance fit with it. The side of the conversion housing 3 is installed with a control lever 6 through a rotating shaft. A radial transmission rod 10 is installed at the inner end of the rotating shaft. A groove is provided on the outer side of the thimble sleeve 9. The movable end of the transmission rod 10 is inserted into the groove. The movable end of the transmission rod 10 is spherical, and the movable end of the transmission rod 10 has a clearance fit with the groove so that the end of the transmission rod 10 can move in the groove. By rotating the control lever 6, the transmission rod 10 can be driven to swing. The transmission rod 10 drives the thimble sleeve 9 to slide. The thimble sleeve 9 pushes the valve core 2 to move through the connecting rod, and manual commutation can be achieved. In the case of power failure, manual operation can be carried out.

[0014] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chip multi-way valve with a manual reversing device, comprising a plurality of valve blocks (1) arranged side by side. A valve cavity penetrating transversely is provided in the valve block (1), and a correspondingly adapted valve core (2) is slidably connected in the valve cavity. One end of the valve block (1) is fixedly installed with a conversion housing (3), an electromagnet a (4) is installed at the outer end of the conversion housing (3), and an electromagnet b (5) is installed at the other end of the valve block (1). The electromagnet a (4) and the electromagnet b (5) exert driving control on the valve core (2) in a two-way manner. It is characterized in that: A connecting rod (7) with the same axis is fixedly installed in the middle of the valve core (2). The connecting rod (7) axially extends into the conversion shell (3). A matching thimble sleeve (9) is slidably connected in the inner cavity of the conversion shell (3). The end of the thimble sleeve (9) contacts the end of the connecting rod (7). The electromagnet a (4) is provided with a protruding thimble (8). The end of the thimble (8) abuts against the connecting rod (7). The thimble (8) penetrates through the middle of the thimble sleeve (9). A control lever (6) is installed on the side of the conversion shell (3) through a rotating shaft. A radial transmission rod (10) is installed at the inner end of the rotating shaft. A groove is provided on the outer side of the thimble sleeve (9). The movable end of the transmission rod (10) is inserted into the groove.

2. The wafer - type multi - way valve with a manual reversing device according to claim 1, wherein: The movable end of the transmission rod (10) is spherical, and the movable end of the transmission rod (10) is in clearance fit with the groove.

3. The wafer multi-way valve with a manual reversing device according to claim 2, characterized in that: Reset springs a for applying thrust to both ends of the valve core (2) are provided, and reset springs b for applying thrust to both ends of the thimble sleeve (9) are provided.

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