Master cylinder isolating valve

Abstract

The utility model provides a main cylinder isolating valve, and relates to the technical field of valves. The isolation type electromagnetic valve is used for solving the technical problems that the number of parts of an isolation type electromagnetic valve provided by an existing patent is large, the number of corresponding assembly and detection production line stations is large, and the requirements for the efficiency and precision of assembly equipment are high. The main cylinder isolating valve comprises a valve body and a valve seat, a liquid flow channel is formed in one end of the valve body, a plurality of liquid outlet holes are formed in the side portion of the valve body, the valve seat is installed in the valve body, a magnetism isolating sleeve is installed at the end, away from a lower filter screen, of the valve body, an armature is installed in the magnetism isolating sleeve, a valve element is arranged in the valve body in a sliding mode, and a reset spring is arranged between the valve element and the valve seat. The external electromagnetic coil is powered on, the electromagnetic coil provides magnetic thrust for the armature to push the valve element and the valve seat to be sealed and closed, the interior and the exterior of the main cylinder are isolated, the electromagnetic coil is powered off, the reset spring pushes the valve element to be away from the valve seat, the interior and the exterior of the main cylinder are communicated, and the isolating valve is small in part number, simple in structure and convenient to assemble.

Description

Technical Field

[0001] The utility model provides a master cylinder isolation valve, which relates to the technical field of valves. Background Art

[0002] An isolation valve is a type of valve in a fluid handling system that is used to block the flow of process media to a given location, typically for maintenance or safety purposes. They can also be used to provide flow logic and connect external equipment to the system.

[0003] The patent with the patent authorization announcement number CN217977419U discloses an isolated solenoid valve, in which the movable iron core is movably connected to the valve body, and the convex column of the movable iron core is arranged in the valve cavity. Through the relative movement of the movable iron core and the valve body, the convex column of the movable iron core is in contact with or disconnected from the second channel of the valve body. When the convex column is in contact with the second channel, the isolated solenoid valve is closed, and when the convex column is disconnected from the second channel, the isolated solenoid valve is turned on. The cross section of the convex column is the same as the cross section of the second channel, so that the pressure of the working medium in the first channel cannot push the convex column open. After the isolated solenoid valve is closed, the convex column can always maintain contact with the second channel, thereby realizing the reliable closure of the isolated solenoid valve. However, the isolated solenoid valve provided by the patent still has shortcomings in actual use. The number of parts of the isolated solenoid valve is large, and the corresponding assembly and testing production line stations are large, which requires high efficiency and precision of the assembly equipment.

[0004] Therefore, it is necessary to provide a master cylinder isolation valve with a small number of parts and a simple structure. Utility Model Content

[0005] In order to overcome the shortcomings of the isolation solenoid valve provided by the existing patents, such as the large number of parts, the large number of corresponding assembly and testing production line stations, and the high requirements for assembly equipment efficiency and precision, the utility model provides a master cylinder isolation valve with a small number of parts and a simple structure.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides the following technical solutions: a main cylinder isolation valve, including a valve body and a valve seat, a liquid flow channel is opened at one end of the valve body, a plurality of liquid outlet holes are opened on the side of the valve body, a valve seat is installed in the valve body, the valve seat is located between the liquid outlet hole and the liquid flow channel, and also includes a reset spring, a valve core, a magnetic isolation sleeve and an armature. A magnetic isolation sleeve is installed at the end of the valve body away from the lower filter screen, and an armature is installed in the magnetic isolation sleeve. A valve core is slidably arranged in the valve body, and a reset spring is arranged between the valve core and the valve seat. Initially, the reset spring pushes the valve core close to the armature.

[0007] More preferably, it further comprises an annular filter screen sleeved on the valve body, a lower filter screen is installed at one end of the valve body close to the liquid flow channel, and the liquid outlet hole is wrapped between the annular filter screens.

[0008] More preferably, the valve body is formed by cold heading of a soft magnetic alloy material and then partially precision machining.

[0009] More preferably, the valve opening of the valve seat is a ground inner conical surface.

[0010] More preferably, the valve core is a high-precision injection-molded part made of PEEK material.

[0011] More preferably, the magnetic isolation sleeve is a precision stamped part made of stainless and non-magnetic material.

[0012] More preferably, the return spring has a preload of about 8.8N in the assembled state.

[0013] More preferably, the armature is a cold-forged part with good magnetic permeability.

[0014] Compared with the prior art, the isolation valve provided by the embodiment of the utility model has the following advantages: 1. By energizing the external electromagnetic coil, the electromagnetic coil provides a magnetic thrust for the armature to push the valve core and the valve seat to seal and close, so that the inside and outside of the main cylinder are isolated. By disconnecting the power supply to the electromagnetic coil, the return spring pushes the valve core away from the valve seat, so that the inside and outside of the main cylinder are connected. The isolation valve has a small number of parts, a simple structure, and is easy to assemble.

[0015] 2. Filter the liquid through the lower filter screen, and the annular filter screen can block external impurities, thereby preventing the liquid flow channel and the liquid outlet hole of the isolation valve from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the valve body, valve core and armature of the utility model.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the valve seat and valve core of the utility model.

[0019] The markings of the components in the accompanying drawings are as follows: 1. valve body, 101. liquid flow channel, 102. liquid outlet, 2. annular filter, 3. lower filter, 4. valve seat, 5. return spring, 6. valve core, 7. magnetic isolation sleeve, 8. armature. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: A master cylinder isolation valve, see Figure 1-Figure 3 As shown, it includes a valve body 1 and a valve seat 4. A liquid flow channel 101 is opened at the lower end of the valve body 1. Three liquid outlet holes 102 are radially opened on the side of the valve body 1. The valve seat 4 is installed in the valve body 1 by welding. The valve seat 4 is located between the liquid outlet hole 102 and the liquid flow channel 101. It also includes a reset spring 5, a valve core 6, a magnetic isolation sleeve 7 and an armature 8. The end of the valve body 1 away from the lower filter screen 3 is installed with a magnetic isolation sleeve 7 by welding. The magnetic isolation sleeve 7 is a precision stamping part made of stainless and non-magnetic material. It will not rust and corrode due to long-term liquid immersion and is not easy to be damaged. The armature 8 is installed on the top of the magnetic isolation sleeve 7. A valve core 6 is slidably arranged in the valve body 1. The valve body 1 is made of soft magnetic alloy material after cold heading and then locally precision machined. The center hole of the valve body provides air for the valve core 6. The valve core 6 is a high-precision injection-molded part made of PEEK material, which has excellent properties such as high temperature resistance, self-lubrication, easy processing and high mechanical strength, and is corrosion-resistant and dissolution-resistant, with good quality assurance. A reset spring 5 is arranged between the valve core 6 and the valve seat 4. The reset spring 5 has a pre-pressure of about 8.8N in the assembled state and remains normally open under a side inlet pressure of 180bar, ensuring that the isolation valve electronic control remains normally open when it fails. The valve port of the valve seat 4 is a ground inner conical surface, which can fit with the spherical surface of the valve core 6 to make the sealing effect better and prevent leakage. Initially, the reset spring 5 pushes the valve core 6 to fit closely with the armature 8, which is a cold-headed part with good magnetic permeability and can better transmit electromagnetic thrust for the closure of the valve core 6.

[0022] When the isolation valve is in use, liquid enters the liquid flow channel 101 through the liquid flow channel 101, flows to the middle of the valve body 1 through the through hole of the valve seat 4, and flows out through the liquid outlet 102. When isolation is to be performed, the external electromagnetic coil is energized, and the electromagnetic coil provides a magnetic thrust for the armature 8 to push the valve core 6 and the valve seat 4 to be sealed and closed. At this time, the return spring 5 is compressed and deformed by the force to isolate the inside and outside of the main cylinder. When the isolation valve is to be opened, the electromagnetic coil is disconnected from the power supply. At this time, the return spring 5 loses the force and returns to its original state. The return spring 5 pushes the valve core 6 away from the valve seat 4 and makes the valve core 6 fit the armature 8.

[0023] Example 2: Based on Example 1, refer to Figure 2 As shown, it also includes an annular filter screen 2 sleeved on the valve body 1 by means of bolt connection, and a lower filter screen 3 is installed on one end of the valve body 1 close to the liquid flow channel 101 by means of bolt connection, and the three liquid outlet holes 102 are all wrapped between the annular filter screen 2.

[0024] When the isolation valve is in use, the liquid needs to pass through the lower filter 3 before entering the liquid flow channel 101 of the isolation valve to prevent the liquid flow channel 101 from being blocked. After the liquid flows out from the liquid outlet 102, it is filtered and discharged through the annular filter 2. At the same time, the annular filter 2 can block external impurities and prevent the liquid outlet 102 from being blocked by external impurities.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A master cylinder isolation valve, comprising a valve body (1) and a valve seat (4), wherein a liquid flow channel (101) is provided at one end of the valve body (1), a plurality of liquid outlet holes (102) are provided at the side of the valve body (1), a valve seat (4) is installed in the valve body (1), and the valve seat (4) is located between the liquid outlet holes (102) and the liquid flow channel (101), wherein the valve body (1) is provided with a plurality of liquid outlet holes (102), and wherein the valve seat (4) is provided with a plurality of liquid outlet holes (102) and a plurality of liquid outlet holes (102). The valve body (1) further comprises a return spring (5), a valve core (6), a magnetic isolation sleeve (7) and an armature (8); a magnetic isolation sleeve (7) is installed at one end of the valve body (1) away from the lower filter screen (3); an armature (8) is installed in the magnetic isolation sleeve (7); a valve core (6) is slidably arranged in the valve body (1); a return spring (5) is arranged between the valve core (6) and the valve seat (4); initially, the return spring (5) pushes the valve core (6) to be close to the armature (8).

2. A master cylinder isolation valve according to claim 1, characterized in that: It also includes an annular filter screen (2) sleeved on the valve body (1), a lower filter screen (3) is installed at one end of the valve body (1) close to the liquid flow channel (101), and the liquid outlet hole (102) is wrapped between the annular filter screens (2).

3. A master cylinder isolation valve according to claim 1, characterized in that: The valve body (1) is made of a soft magnetic alloy material after cold heading and then local precision machining.

4. A master cylinder isolation valve according to claim 1, characterized in that: The valve opening of the valve seat (4) is a ground inner conical surface.

5. A master cylinder isolation valve according to claim 1, characterized in that: The valve core (6) is a high-precision injection-molded part made of PEEK material.

6. A master cylinder isolation valve according to claim 1, characterized in that: The magnetic isolation sleeve (7) is a precision stamping part made of stainless and non-magnetic conductive material.

7. A master cylinder isolation valve according to claim 1, characterized in that: The return spring (5) has a preload of about 8.8N in the assembled state.

8. A master cylinder isolation valve according to claim 1, characterized in that: The armature (8) is a cold-forged part with good magnetic permeability.

Images