A multi-channel electromagnetic selector valve

Abstract

The present invention relates to a multi-channel electromagnetic selection valve, comprising an electromagnetic valve, a lower cover plate, a channel layer and an upper cover plate, wherein the electromagnetic valve is a one-way electromagnetic valve; the lower cover plate is provided with an electromagnetic valve positioning hole, a mounting hole, a liquid inlet and outlet hole and a fixing hole with the upper cover plate, wherein the electromagnetic valve positioning hole and the mounting hole are arranged on the front of the lower cover plate and do not penetrate the lower cover plate; the channel layer is composed of several layers of substrates provided with liquid inlet holes, liquid outlet holes, a common end and a one-way channel, the number of liquid inlet holes, the number of common ends and the position of each layer are the same, the number and position of liquid outlet holes are set according to the sequence of each layer of channels, and the setting principle is: the substrate close to the back of the lower cover plate is the first layer, and all the liquid outlet holes passed from the first layer to the n-1th layer of substrates are not arranged on the nth layer of substrate; the upper cover plate is provided with a liquid inlet hole, a common liquid outlet hole and a hole fixed with the lower cover plate. The present invention has a simple structure, a reasonable design and can effectively prevent cross contamination of the multi-channel selection valve during the liquid inlet process.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-channel selection valves, and in particular to a multi-channel electromagnetic selection valve. Background Art

[0002] At present, multi-way selector valves are widely used in various technical fields, such as biology, petroleum, chemical industry and precision instruments. The most widely used multi-way selector valve is a rotary mechanical valve, which is mainly composed of a valve core and a valve body. The valve body is provided with liquid inlet holes according to a certain rule. When in use, the valve body is fixed and the valve core rotates to achieve the selection of different hole positions. This kind of valve will inevitably cause the valve surface to wear during use, resulting in valve body leakage and shortening the service life of the valve. At the same time, during the rotation of the valve core, the liquids in different hole positions will cause cross contamination, which limits the use of multi-way valves on precision instruments.

[0003] In order to overcome these problems, existing technologies have also made some improvements to the multi-way selector valve, such as selecting materials with good wear resistance to increase the service life of the valve, or more reasonably designing the position of the holes on the valve body and the rotation direction of the valve core to reduce the chance of cross contamination.

[0004] However, these changes still cannot fundamentally avoid the problems existing in the rotary mechanical selection valve. In order to solve the above problems, the present invention provides a multi-channel electromagnetic selection valve, which redesigns the valve based on the valve position selection principle. The present invention does not need to switch the liquid inlet hole by rotating the valve core, and each liquid inlet hole has its own channel, which greatly reduces the probability of cross contamination. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-channel electromagnetic selector valve. To achieve the above purpose, the present invention provides the following technical solutions:

[0006] The present invention relates to a multi-channel electromagnetic selection valve, comprising a solenoid valve, a lower cover plate, a channel layer and an upper cover plate. The solenoid valve is a single-way solenoid valve installed on the front of the lower cover plate; the lower cover plate is provided with a solenoid valve positioning hole, a solenoid valve mounting hole, a liquid inlet hole, a liquid outlet hole and a mounting hole fixed to the upper cover plate, wherein the solenoid valve positioning hole and the solenoid valve mounting hole are arranged on the front of the lower cover plate and do not penetrate the lower cover plate, and the liquid inlet hole, the liquid outlet hole and the mounting hole fixed to the upper cover plate penetrate the entire lower cover plate; the channel layer is provided with a liquid inlet hole, a liquid outlet hole, a common end and a channel, and the channel layer can be formed by gluing together several channel substrates provided with holes and channels, or can be printed by a 3D printer according to the design. The determined hole positions and channels are printed by layer, and the number of liquid inlet holes, the number of common terminals and the positions of each layer are the same. The number and positions of liquid outlet holes are set according to the positions of the channels on each layer. The setting principle is: the channel close to the back of the lower cover plate is the first layer, and all the liquid outlet holes passed by the channels from the first layer to the n-1th layer are not set on the nth layer channel, that is, the liquid outlet holes connected to the previous channels are not set on each layer of the channel; the channel is a one-way channel, and a check structure is provided near the common terminal; the upper cover plate is provided with a liquid inlet hole, a common liquid outlet hole and a mounting hole fixed to the lower cover plate. When in use, the liquid flows through the liquid inlet hole of the upper cover plate, the liquid inlet hole of the channel layer, and the liquid inlet hole of the lower cover plate in sequence. When the solenoid valve is in a flowing state, the liquid flows into the liquid inlet of the solenoid valve from the liquid inlet hole of the lower cover plate, and then passes through the liquid outlet of the solenoid valve, the liquid outlet hole of the channel layer, the channel of the channel layer, the common end of the channel layer in sequence, and finally flows out from the common liquid outlet hole of the upper cover plate; when the solenoid valve is in a closed state, the liquid cannot pass through the solenoid valve, and this liquid inlet hole channel is in a disconnected state.

[0007] The number of liquid inlet holes on the lower cover plate, the number of liquid inlet holes on the channel layer, and the number of liquid inlet holes on the lower cover plate are the same, and their positions correspond one to one and overlap; the common ends on each layer of channels overlap correspondingly and overlap with the positions of the common liquid outlet holes on the upper cover plate.

[0008] The liquid inlet and the liquid outlet of the one-way solenoid valve are respectively communicated with the liquid inlet and the liquid outlet of the lower cover plate.

[0009] The channel layer can be made of fluoroplastics, glass, ceramics, etc. as required. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 :Lower cover. In the figure, 1—solenoid valve positioning hole; 2—solenoid valve mounting hole; 3 / 7—liquid inlet hole; 4 / 6—liquid outlet hole; 5 / 8—mounting hole fixed to the upper cover.

[0011] Figure 2 : Upper cover. In the figure, 9 is a liquid inlet hole; 10 is a common liquid outlet hole; 11 is a mounting hole for fixing with the lower cover.

[0012] Figure 3: Channel layer. In the figure, 12 is a liquid inlet hole; 13 is a liquid outlet hole; 14 is a common end; 15 is a channel.

[0013] Figure 4 :Solenoid valve. In the figure, 16 is the liquid inlet hole; 17 is the liquid outlet hole; 18 is the positioning hole; 19 is the fixing hole.

[0014] Figure 5 : Schematic diagram of valve body assembly. In the figure, 20 is an upper cover plate; 21 is a channel layer; 22 is a lower cover plate; 23 is a solenoid valve.

[0015] Figure 6 : Schematic diagram of the structure and arrangement sequence of each layer of the channel layer of the nine-way electromagnetic selection valve.

[0016] Figure 7 : Schematic diagram of channel check structure. DETAILED DESCRIPTION

[0017] One embodiment of the present invention is a nine-way electromagnetic selector valve with nine layers of channels.

[0018] like Figure 1 The lower cover shown in FIG. 1 is provided with 9 liquid inlet holes and 9 liquid outlet holes, and is also equipped with 9 solenoid valves. The liquid inlet and liquid outlet of the solenoid valve are respectively connected to the liquid inlet and liquid outlet of the lower cover. The structure of the solenoid valve is as follows: Figure 4 shown.

[0019] like Figure 2 , Figure 3 As shown, the upper cover is provided with 9 liquid inlet holes and 1 common liquid outlet hole. Figure 5 As shown in the figure, the positions of the liquid inlet holes of the upper cover plate, the liquid inlet holes of the lower cover plate, and the liquid inlet holes of the channel layer coincide. Among them, the channel layer that is close to the back of the lower cover plate is the first one, and the structure and arrangement order of the channel layer are as follows: Figure 6 shown.

[0020] When in use, the liquid flows through the liquid inlet hole of the upper cover plate, the liquid inlet hole of the channel layer, and the liquid inlet hole of the lower cover plate in sequence. When the solenoid valve is in the flow state, the liquid flows from the liquid inlet hole of the lower cover plate into the liquid inlet of the solenoid valve, and then passes through the liquid outlet of the solenoid valve, the liquid outlet hole of the channel layer, the channel, the common end of the channel layer in sequence, and finally flows out from the common liquid outlet hole of the upper cover plate. Figure 7 As shown, the check structure provided at the common end of the channel further prevents the liquid in the front channel from entering the lower channel through the common end; when the solenoid valve is in a closed state, the liquid cannot pass through the solenoid valve, and the liquid inlet channel is in a disconnected state.

Claims

1. A multi-channel electromagnetic selector valve, comprising a solenoid valve, a lower cover plate, a channel layer and an upper cover plate, wherein the solenoid valve is a single-way solenoid valve installed on the front side of the lower cover plate; the lower cover plate is provided with a solenoid valve positioning hole, a solenoid valve mounting hole, a liquid inlet hole, a liquid outlet hole and a mounting hole fixed to the upper cover plate, wherein the solenoid valve positioning hole and the solenoid valve mounting hole are arranged on the front side of the lower cover plate and do not penetrate the lower cover plate, and the liquid inlet hole, the liquid outlet hole and the mounting hole fixed to the upper cover plate penetrate the entire lower cover plate; the channel layer is provided with a liquid inlet hole, a liquid outlet hole, a common end and a channel, the channel layer is formed by gluing together several channel substrates with hole positions and channels, or is printed by a 3D printer in layers according to the set hole positions and channels, the number of liquid inlet holes, the number of common ends and the positions of each layer are the same, and the number and position of liquid outlet holes are the same. According to the position setting of each layer of channels, the setting principle is: the channel close to the back of the lower cover plate is the first layer, then all the liquid outlet holes passed by the channels from the first layer to the n-1th layer are not set on the nth layer channel, that is, the liquid outlet hole connected to the previous channel is not set on each layer of channels; the channel is a one-way channel, and a check structure is provided at a position close to the common end; the upper cover plate is provided with a liquid inlet hole, a common liquid outlet hole and a mounting hole fixed to the lower cover plate; the number of liquid inlet holes on the lower cover plate, the number of liquid inlet holes in the channel layer, and the number of liquid inlet holes on the lower cover plate are the same, and the positions correspond to each other and overlap; the common ends on each layer of channels overlap correspondingly and overlap with the position of the common liquid outlet hole on the upper cover plate; the liquid inlet and liquid outlet of the one-way solenoid valve are respectively connected to the liquid inlet and liquid outlet of the lower cover plate.

2. A multi-channel electromagnetic selector valve according to claim 1, characterized in that: The channel layer is made of fluoroplastic, glass or ceramic as required.

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