Half-pipe type valve terminal

Abstract

The utility model relates to a semi-pipe type valve terminal which comprises a valve plate, a plurality of electromagnetic valves and a circuit board control module, each electromagnetic valve comprises a main valve body, an end cover, a pilot head, a piston, an electromagnet, a valve element assembly and a reset spring, and the pilot head is provided with a pilot hole communicated with a valve cavity. An air inlet, a first air outlet and a second air outlet are formed in the valve plate, three air guide holes matched with the valve element assembly are formed in one side of the main valve body, and the three air guide holes are communicated between the valve cavity and the air inlet, between the valve cavity and the first air outlet and between the valve cavity and the second air outlet respectively. A first exhaust port and a second exhaust port which are matched with the valve element assembly are formed in the other side of the main valve body. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly and good protection performance.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic components, in particular to a semi-pipe valve island. Background Art

[0002] A valve island is an integrated control component that integrates the signal input / output and control functions of multiple electric control valves. It is connected to a PLC (programmable logic controller) through fieldbus technology or communication methods to achieve centralized control of multiple valves. This control method not only simplifies the wiring, but also improves the reliability and maintainability of the system. Valve islands are widely used in a wide range of fields, including but not limited to the chemical, pharmaceutical, and food processing industries, and are used to control the production processes of various fluid media. In addition, valve islands also play an important role in the field of new energy, such as fluid control systems for solar and wind power equipment. The structural design of the valve core assembly of the existing semi-tube valve island is relatively complex, and the assembly is relatively cumbersome. In addition, the semi-tube valve island also has the defects of unreliable working performance and poor protection performance. Summary of the invention

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a semi-pipe valve island with simple structure, stable and reliable performance, convenient assembly and good protection performance.

[0004] To achieve the above-mentioned purpose, the utility model adopts a semi-tube valve island, including a valve plate, a plurality of solenoid valves arranged side by side on the valve plate, and a circuit board control module arranged on the valve plate. The solenoid valve includes a main valve body arranged on the valve plate, an end cover arranged on one end of the main valve body, a pilot head arranged on the other end of the main valve body, a piston arranged in a pilot cavity of the pilot head, an electromagnet arranged on one end of the pilot head, a valve core assembly arranged in the valve cavity of the main valve body and coordinated with the piston, and a return spring arranged between the valve core assembly and the end cover. The pilot head is provided with a pilot hole connected to the valve cavity, an air inlet, a first air outlet, and a second air outlet are respectively provided on the valve plate, three air guide holes coordinated with the valve core assembly are provided on one side of the main valve body, and the three air guide holes are respectively connected between the valve cavity and the air inlet, the first air outlet, and the second air outlet, and the other side of the main valve body is provided with a first exhaust port and a second exhaust port coordinated with the valve core assembly.

[0005] The beneficial effects of the above structure are as follows: The spool assembly is designed with a modular structure, which facilitates the modular assembly of the spool assembly with the main valve body and the end cover. Moreover, the return spring can ensure that the spool assembly can operate smoothly and reliably, with higher working reliability. During operation, when the coil of the electromagnet loses power, the air inlet admits air. The spool assembly is in the initial position. At this time, the air inlet is connected to the first exhaust port, and the second exhaust port is connected to the second air outlet. When the electromagnet coil is powered on, gas enters the pilot chamber, the air pressure in the pilot chamber increases and drives the piston to act. The piston drives the spool assembly to act. At this time, the air inlet admits air, the air inlet is connected to the second exhaust hole, and the first exhaust hole is connected to the first air outlet. Therefore, this semi-tubular valve island has the advantages of simple structure, stable and reliable performance, convenient assembly, and good protection performance.

[0006] Particularly, the spool assembly includes a spool disposed in the valve body and a plurality of sealing rings. The spool is provided with the plurality of sealing rings corresponding to the first exhaust port, the second exhaust port, and three air guide holes respectively. One end of the spool has a boss portion that abuts against the piston. The spool is provided with a plurality of sealing rings that cooperate with the first exhaust port, the second exhaust port, and the three air guide holes, so as to ensure that the plurality of sealing rings can reliably close or open the first exhaust port, the second exhaust port, and the three air guide holes as the spool acts, which is beneficial to improving the working reliability of this semi-tubular valve island.

[0007] Particularly, the other end of the spool has a positioning groove that cooperates with the return spring. One end of the return spring is clamped in the positioning groove, and the end cover is provided with a positioning boss that cooperates with the return spring. The other end of the return spring is clamped on the positioning boss. The spool cooperates with the return spring through the positioning groove, so as to ensure that the spool assembly can operate reliably and smoothly, which is beneficial to improving the working reliability of this semi-tubular valve island.

[0008] Particularly, the valve plate is respectively provided with three sealing grooves corresponding to the three air guide holes. Three sealing washers are respectively disposed in the three sealing grooves. The three sealing washers respectively abut against the main valve body and form a sealing fit between the valve plate and the main valve body. The valve plate is provided with three sealing rings that are in sealing cooperation with the main valve body, so as to ensure the sealing performance between the valve plate and the main valve body and better protection performance.

[0009] Particularly, the circuit board control module includes a box body disposed on the valve plate and a circuit board assembly disposed in the box body. The box body is provided with an annular sealing groove, and a waterproof sealing ring that is in sealing cooperation with the valve plate is disposed in the annular sealing groove. The box body of the circuit board control module is in sealing cooperation with the valve plate through the sealing ring, so as to improve the sealing performance between the circuit board control module and the valve plate and better protection performance. Description of the Drawings

[0010] Figure 1 This is the perspective view of the embodiment of the present utility model.

[0011] Figure 2 This is the sectional view of the embodiment of the present utility model.

[0012] Figure 3 This is the assembly drawing of the circuit board control module and the valve plate of the embodiment of the present utility model. Detailed implementation manners

[0013] Such as Figures 1 to 3As shown, the embodiment of the utility model is a semi-tube valve island, including a valve plate 10, a plurality of solenoid valves 20 respectively arranged side by side on the valve plate 10, and a circuit board control module 30 arranged on the valve plate 10, wherein the solenoid valve 20 includes a main valve body 21 arranged on the valve plate 10, an end cover 22 arranged on one end of the main valve body 21, a pilot head 23 arranged on the other end of the main valve body 21, a piston 24 arranged in a pilot cavity 230 of the pilot head 23, an electromagnet 25 arranged on one end of the pilot head 23, a valve core assembly 26 arranged in the valve cavity 210 of the main valve body 21 and cooperating with the piston 24, and a valve core assembly 26 arranged in the valve core assembly 26 and a return spring 27 between the end cover 22, the pilot head 23 is provided with a pilot hole 231 connected with the valve cavity 211, the valve plate 10 is respectively provided with an air inlet 101, a first air outlet 102, and a second air outlet 103, one side of the main valve body 21 is provided with three air guide holes 211 matched with the valve core assembly 26, the three air guide holes 211 are respectively connected between the valve cavity 210 and the air inlet 101, the first air outlet 102, and the second air outlet 103, and the other side of the main valve body 21 is provided with a first exhaust port 212 and a second exhaust port 213 matched with the valve core assembly 26. The valve core assembly 26 comprises a valve core 261 and a plurality of sealing rings 262 disposed in the valve body 21. The valve core 261 is provided with the plurality of sealing rings 262 corresponding to the first exhaust port 212, the second exhaust port 213 and the three air guide holes 211. One end of the valve core 261 has a boss portion 2611 that abuts against the piston 24. The valve core is provided with a plurality of sealing rings that match the first exhaust port, the second exhaust port and the three air guide holes, so that the plurality of sealing rings can reliably close or open the first exhaust port, the second exhaust port and the three air guide holes as the valve core moves, thereby facilitating the improvement of the working reliability of the semi-pipe valve island. The other end of the valve core 261 has a positioning groove 2612 that matches the return spring 27. One end of the return spring 27 is engaged in the positioning groove 2612. The end cover 22 is provided with a positioning boss 221 that matches the return spring 27. The other end of the return spring 27 is engaged in the positioning boss 221. The valve core cooperates with the return spring through the positioning groove, so as to ensure that the valve core assembly can move reliably and smoothly, which is conducive to improving the working reliability of the semi-pipe valve island. The valve plate 10 is respectively provided with three sealing grooves 104 corresponding to the three air guide holes 211, and three sealing gaskets 11 are respectively provided in the three sealing grooves 104. The three sealing gaskets 11 are respectively in contact with the main valve body 21 and constitute the sealing cooperation between the valve plate 10 and the main valve body 21. The valve plate is provided with three sealing rings that are sealed with the main valve body, so as to ensure the sealing performance between the valve plate and the main valve body, and the protection performance is better.

[0014] like Figure 1 and 3As shown, the circuit board control module 30 includes a box body 31 disposed on the valve plate 10 and a circuit board assembly 32 disposed in the box body 31. An annular sealing groove 311 is provided on the box body 31, and a waterproof sealing ring 33 that is sealingly engaged with the valve plate 10 is provided in the annular sealing groove 311. The box body of the circuit board control module is sealingly engaged with the valve plate through the sealing ring, so as to improve the sealing performance between the circuit board control module and the valve plate, and the protection performance is better.

[0015] The spool assembly is designed with a modular structure, which facilitates the modular assembly of the spool assembly with the main valve body and the end cover, and the return spring can ensure that the spool assembly can operate smoothly and reliably, and the working reliability is higher. During operation, when the coil of the electromagnet is de-energized, the air inlet admits air, and the spool assembly is in the initial position. At this time, the air inlet is connected to the first exhaust port, and the second exhaust port is connected to the second air outlet; when the electromagnet coil is energized, gas enters the pilot chamber, the air pressure in the pilot chamber increases and drives the piston to act, and the piston drives the spool assembly to act. At this time, the air inlet admits air, the air inlet is connected to the second exhaust hole, and the first exhaust hole is connected to the first air outlet. Therefore, the semi-tubular valve island has the advantages of simple structure, stable and reliable performance, convenient assembly, and good protection performance.

Claims

1. A semi-tubular valve island, characterized in that: It includes a valve plate, a plurality of solenoid valves arranged side by side on the valve plate, and a circuit board control module arranged on the valve plate. The solenoid valve includes a main valve body arranged on the valve plate, an end cover arranged on one end of the main valve body, a pilot head arranged on the other end of the main valve body, a piston arranged in a pilot cavity of the pilot head, an electromagnet arranged on one end of the pilot head, a valve core assembly arranged in the valve cavity of the main valve body and coordinated with the piston, and a return spring arranged between the valve core assembly and the end cover. A pilot hole connected to the valve cavity is arranged on the pilot head, an air inlet, a first air outlet, and a second air outlet are respectively arranged on the valve plate, three air guide holes matched with the valve core assembly are arranged on one side of the main valve body, and the three air guide holes are respectively connected between the valve cavity and the air inlet, the first air outlet, and the second air outlet, and a first exhaust port and a second exhaust port matched with the valve core assembly are arranged on the other side of the main valve body.

2. The semi-tubular valve island according to claim 1, wherein: The valve core assembly includes a valve core and multiple sealing rings arranged in the valve body. The multiple sealing rings are respectively arranged on the valve core corresponding to the first exhaust port, the second exhaust port and the three air guide holes. One end of the valve core has a boss portion that abuts against the piston.

3. The semi-tubular valve island according to claim 2, wherein: The other end of the valve core has a positioning groove matched with the reset spring, one end of the reset spring is clamped in the positioning groove, the end cover is provided with a positioning boss matched with the reset spring, and the other end of the reset spring is clamped on the positioning boss.

4. The semi-tubular valve island according to claim 3, characterized in that: Three sealing grooves are respectively arranged on the valve plate corresponding to the three air guide holes, and three sealing gaskets are respectively arranged in the three sealing grooves. The three sealing gaskets are respectively in contact with the main valve body and constitute a sealing fit between the valve plate and the main valve body.

5. The semi-tubular valve island according to claim 1 or 2, characterized in that: The circuit board control module comprises a box body arranged on the valve plate and a circuit board assembly arranged in the box body. The box body is provided with an annular sealing groove, and a waterproof sealing ring which cooperates with the valve plate in sealing is arranged in the annular sealing groove.

Images