CN205383270U - Clear up solenoid valve - Google Patents

Abstract

The utility model discloses a clear up solenoid valve, include: the electromagnetic valve comprises an electromagnetic valve body, wherein a valve cavity is formed in the electromagnetic valve body, a piston assembly is installed in the valve cavity, a coil assembly is arranged outside the electromagnetic valve body, a first passage and a second passage which are communicated with the valve cavity are arranged on the electromagnetic valve body, the first passage and the second passage are horizontally arranged, sealing joint assemblies are installed at the opening ends of the first passage and the second passage, and hoses penetrate through the sealing joint assemblies and are respectively communicated with the first passage and the second passage; the utility model discloses a sealing joint subassembly comprises sealing member, hose nipple and threaded adapter, and in the sealing member packing hose nipple, constitute a sealed combination, the hose mounting is in the sealing member, makes the hose have fine anticorrosive ability, leakproofness and resistance to pressure impact, with this body coupling of threaded adapter and solenoid valve, forms a metal internal thread, in packing into metal thread with sealed combination, increases its pulling force in order to reach good pressure resistance.

Description

Digestion solenoid valve

Technical field:

The utility model relates to the technical field of electromagnetic valves, in particular to a digestion electromagnetic valve with good anti-corrosion performance and leak-proof performance.

Background technique:

Solenoid valve (Electromagneticvalve) is an industrial equipment controlled by electromagnetic. It is an automatic basic component used to control fluid. It belongs to actuator and is not limited to hydraulic and pneumatic. It is used to adjust the direction, flow, speed and other aspects of media in industrial control systems. According to the parameters, the solenoid valve can cooperate with different circuits to achieve the expected control, and the control accuracy and flexibility can be guaranteed. There are many kinds of solenoid valves. Different solenoid valves play a role in different positions of the control system. The most commonly used ones are check valves, safety valves, directional control valves, and speed regulating valves.

Solenoid valves in the prior art generally have a closed cavity, and a piston rod assembly is arranged in the closed cavity, and an inlet pipe and an outlet pipe are arranged on the body of the solenoid valve, and the piston rod is passed between the inlet pipe and the outlet pipe. The movement of the rod to achieve communication, the general circulation in the solenoid valve is: water, lubricating oil, etc., through the movement of the piston rod to realize the gradual discharge of liquid or regular and quantitative discharge. However, the solenoid valve with traditional structure is only suitable for general fluids, and for some corrosive fluids, it is easy to corrode the piston rod and valve cavity.

In order to overcome this problem, I propose a digestion solenoid valve with good anti-corrosion performance and leak-proof performance.

Utility model content:

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a digestion solenoid valve.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: the digestion solenoid valve includes: a solenoid valve body, a valve chamber is formed inside the solenoid valve body, a piston assembly is installed in the valve chamber, and a solenoid valve body is provided with The coil assembly, the solenoid valve body is provided with a first channel and a second channel communicating with the valve cavity, the first channel and the second channel are arranged horizontally, and a sealing joint assembly is installed at the opening end of the first channel and the second channel , the hose passes through the sealing joint assembly to communicate with the first channel and the second channel respectively; the sealing joint assembly includes: a hose joint, a threaded adapter and a seal that are nested in each other, and the hose joint is connected through the threaded adapter. Fits in the threads of the open ends of the first and second passages.

Further, in the above technical solution, the coil assembly includes: a moving iron core, a return spring installed at the end of the moving iron core and a magnetic-insulation tube assembly, and the piston assembly includes: a four-wheel drive installed at the front end of the moving iron core The front end of the PTFE valve stem is equipped with a PTFE isolation plate and a PTFE valve stem sealing ring; the PTFE valve stem moves back and forth under the drive of the coil assembly to control the first channel or the second channel. Blocking, blocking the flow of liquid media.

Furthermore, in the above technical solution, the section of the hose joint is T-shaped, and a channel for the hose to pass through is opened in the middle of the hose joint; the threaded adapter is correspondingly T-shaped, and the upper end of the hose joint is The part protrudes from the outer hexagon and is limited outside the threaded adapter. A mounting position is formed between the end of the hose joint and the end of the threaded adapter, and the seal is installed in the mounting position.

Furthermore, in the above technical solution, the section of the seal is T-shaped, the seal is installed on the installation position, and extends into the channel of the hose joint to form a sealed combination with the hose joint.

Further, in the above technical solution, the solenoid valve body includes: a coil assembly bracket and a valve seat, the valve cavity is formed in the valve seat; the moving iron core is installed in the coil assembly bracket, and the tetrafluoro valve The rod is fixed on the front end of the moving iron core and extends into the valve seat; the valve cavity is formed by communicating with the first cavity and the second cavity.

Further, in the above technical solution, the tetrafluoro isolation plate is installed between the first cavity and the second cavity, and is close to the inner wall of the second cavity and the end wall of the valve seat; A PTFE isolation plate sealing ring is arranged between the PTFE and the PTFE valve stem.

Further, in the above technical solution, the first channel and the second channel communicate through the first cavity; the tetrafluoro valve stem acts on the outlet end of the valve cavity, and is set on the top end of the tetrafluoro valve stem There are PTFE valve stem seals.

Furthermore, in the above technical solution, one end of the restoring spring is connected to the end of the moving iron core, and the other end is supported on the inner end wall of the magnetic-insulation tube assembly.

Furthermore, in the above technical solution, the solenoid valve body is further provided with an electrical connection part, and an external power supply line is provided on the electrical connection part.

After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

The utility model is equipped with a sealing joint assembly on the first passage and the second passage. The sealing joint assembly is composed of a sealing member, a hose joint and a threaded adapter. The sealing member is put into the hose joint to form a sealing combination. The hose Installed in the seal, so that the hose has good anti-corrosion, sealing and pressure shock resistance, connect the threaded adapter with the solenoid valve body to form a metal internal thread, and put the sealing combination into the metal thread to increase Its tension is to achieve good pressure resistance; in addition, the solenoid valve body, PTFE valve stem, PTFE isolation plate, and PTFE valve stem sealing ring are all made of PTFE material or wrapped with PTFE material , separated by the PTFE isolation plate and the sealing ring of the PTFE isolation plate, so that the liquid fluid does not contact the inside of the coil assembly bracket, so as to achieve good anti-corrosion performance, so that the digestion solenoid valve can operate in 100% acid and 100% concentration of alkaline media Use for a long time. The solenoid valve body is made of polytetrafluoroethylene material, which has good high temperature resistance and low temperature resistance. It can be used for a long time at 320 degrees Celsius at high temperature and at -80 degrees Celsius at low temperature, so that the solenoid valve can have a wider range of applications. application.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the piston assembly in the utility model.

detailed description:

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described.

As shown in Figure 1-2, the digestion solenoid valve includes: a solenoid valve body 1, a valve chamber 10 is formed inside the solenoid valve body 1, a piston assembly 2 is installed in the valve chamber 10, and a coil assembly is arranged outside the solenoid valve body 1 3. The solenoid valve body 1 is provided with a first channel 11 and a second channel 12 communicating with the valve cavity 10, the first channel 11 and the second channel 12 are arranged horizontally, and are located between the first channel 11 and the second channel 12 The opening end is equipped with a sealing joint assembly 4, and the hose 5 passes through the sealing joint assembly 4 to communicate with the first passage 11 and the second passage 12 respectively; The adapter 42 and the sealing member 43 are used to thread the sealing joint assembly 4 to the open ends of the first channel 11 and the second channel 12 through the threaded adapter 42 .

Specifically, the coil assembly 3 includes: a moving iron core 3 , a return spring 32 installed at the end of the moving iron core 31 and a magnetically insulating tube assembly 33 , and the piston assembly 2 includes: a moving iron core 31 installed at the front end The PTFE valve stem 21, the front end of the PTFE valve stem 21 is equipped with a PTFE isolation plate 22 and a PTFE valve stem sealing ring 23; the PTFE valve stem 21 moves back and forth under the drive of the coil assembly 3 to The first channel 11 or the second channel 12 is blocked to block the circulation of the liquid medium.

The solenoid valve body 1 includes: a coil assembly bracket 16 and a valve seat 17, and the valve cavity 10 is formed in the valve seat 17. The valve cavity 10 is composed of the first cavity 101 and the second cavity 102; the moving iron core 31 is installed in the coil assembly bracket 16, and one end of the restoring spring 32 is connected to the end of the moving iron core 31, and the other end is supported on the magnetic-absolute tube assembly 33. The PTFE valve rod 21 is fixed on the front end of the moving iron core 31 and extends into the second cavity 102. The PTFE isolation plate 22 is installed between the first cavity 101 and the second cavity 102, and is close to the second cavity. The inner wall of the cavity 102 and the end wall of the valve seat 17; a PTFE isolation plate sealing ring 221 is arranged between the PTFE isolation plate 22 and the PTFE valve stem 21. An electrical connection part 13 is also provided outside the solenoid valve body 1, and an external power supply line is provided on the electrical connection part 13; the first channel 11 and the second channel 12 communicate through the valve cavity, and the PTFE valve stem 21 acts on the valve. The outlet end of the chamber 10, and the top end of the PTFE valve stem 21 is provided with a PTFE valve stem sealing ring 23.

The cross-section of the hose joint 41 is T-shaped, and a channel for the hose 5 to pass through is opened in the middle of the hose joint 41; the threaded adapter 42 is correspondingly T-shaped, and the upper end of the hose joint 41 protrudes and Limited to the outside of the threaded adapter 42, an installation position is formed between the end of the hose joint 41 and the end of the threaded adapter 42, and the seal 43 is installed in the installation position. The cross-section of the seal 43 is T-shaped, the seal 43 is installed on the installation position, and extends into the passage of the hose joint 41 to form a sealed combination with the hose joint 41, the hose is installed in the seal, so that the hose has Good anti-corrosion, sealing and pressure shock resistance, connect the thread adapter with the solenoid valve body to form a metal internal thread, put the sealing combination into the metal thread, increase its tension to achieve good pressure resistance.

The use principle of the present utility model is as follows:

In the initial state, the coil assembly 3 is not energized and does not generate a magnetic field, the moving iron core 31 moves down under the action of the restoring spring 32, and at the same time, the PTFE valve stem 21 moves down to the second channel 12 in the valve cavity 10 The opening is blocked and sealed by the PTFE valve stem sealing ring 23; at this time, the corrosive liquid flow flows in from the first channel 11 through the hose 5, and flows into the first cavity 101, the liquid flow Under the isolation effect of the PTFE isolation plate 22, it is limited in the first cavity 101 and cannot flow into the second cavity 102, let alone flow into the coil assembly bracket 16, so as to prevent the coil assembly bracket 16, the moving iron core 31 and the recovery The spring 32 etc. are corroded, causing damage to the solenoid valve body 1;

The coil assembly 3 is energized through the electrical connection part 13, the coil assembly 3 generates a magnetic field, and the moving iron core 31 overcomes the force of the recovery spring 32 and moves upward under the action of the magnetic field. At this time, the top of the PTFE valve stem 21 leaves the outlet of the valve chamber 10 end, the liquid fluid can flow out through the second channel 12 and then through the hose 5;

When the coil assembly 3 is powered off, the magnetic field disappears, and the moving iron core 31 moves down under the action of the restoring spring 32. The stem sealing ring 23 is used for sealing, and the liquid cannot flow out through the second channel 12 .

In this way, the reciprocating movement of the moving iron core 31 drives the reciprocating movement of the PTFE valve rod 21 to realize communication/blocking between the first channel 11 and the second channel 12 . The hose 5 is installed in the seal 43, so that the hose 5 has good anti-corrosion, sealing and pressure shock resistance. Connect the thread adapter 42 with the solenoid valve body 1 to form a metal internal thread, and combine the seal Put it into the metal thread, increase its tension to achieve good pressure resistance, and the solenoid valve body 1, PTFE valve stem 21, PTFE isolation plate 22, PTFE valve stem sealing ring 23 are all made of PTFE The material is made of or wrapped with polytetrafluoroethylene material, which is isolated by the tetrafluoro isolation plate 22 and the sealing ring 221 of the tetrafluoro isolation plate, so that the liquid fluid does not contact the inside of the coil assembly bracket 16, so as to achieve good anti-corrosion performance and make the digestion solenoid valve It can be used for a long time in 100% acid and 100% alkali medium. Solenoid valve body 1 is made of polytetrafluoroethylene material, which has good high temperature resistance and good low temperature resistance. Applications.

Of course, the above descriptions are only specific embodiments of the utility model, and are not intended to limit the implementation scope of the utility model. Should be included in the utility model patent scope.

Claims (9)

1. Digest the solenoid valve, including: solenoid valve body (1), a valve chamber (10) is formed inside the solenoid valve body (1), a piston assembly (2) is installed in the valve chamber (10), and the solenoid valve body (1 ) is provided with a coil assembly (3), and the solenoid valve body (1) is provided with a first channel (11) and a second channel (12) communicating with the valve chamber (10), which are characterized in that: The first channel (11) and the second channel (12) are arranged horizontally, and the opening ends of the first channel (11) and the second channel (12) are installed with a sealing joint assembly (4), and the hose (5) Pass through the sealing joint assembly (4) to communicate with the first channel (11) and the second channel (12); the sealing joint assembly (4) includes: a hose joint (41) nested in each other, a threaded adapter (42) and the sealing member (43), the hose connector (41) is installed in the open end threads of the first passage (11) and the second passage (12) through the thread adapter (42). 2. The digestion solenoid valve according to claim 1, characterized in that: the coil assembly (3) comprises: a moving iron core (31), a recovery spring (32) installed at the end of the moving iron core (31) and Insulation tube assembly (33); the piston assembly (2) includes: a tetrafluoro valve stem (21) installed on the front end of the moving iron core (31), and a tetrafluoro isolation plate is installed on the front end of the tetrafluoro valve stem (21) (22) and PTFE valve stem sealing ring (23); described PTFE valve stem (21) moves back and forth under the drive of coil assembly (3), to first channel (11) or second channel (12) ) to block and block the flow of liquid medium. 3. The digestion solenoid valve according to claim 1, characterized in that: the cross-section of the hose connector (41) is T-shaped, and a channel for the hose (5) to pass through is opened in the middle of the hose connector (41) ; The threaded adapter (42) is correspondingly T-shaped, the upper end of the hose joint (41) protrudes from the outer hexagon and is limited outside the threaded adapter (42), the end of the hose joint (41) and the threaded adapter A mounting position is formed between the ends of the joint (42), in which the seal (43) is mounted. 4. The digestion solenoid valve according to claim 3, characterized in that: the section of the seal (43) is T-shaped, the seal (43) is installed on the installation position, and extends into the hose joint (41) to form a sealed combination with the hose connector (41). 5. The digestion solenoid valve according to claim 2, characterized in that: the solenoid valve body (1) comprises: a coil assembly bracket (16) and a valve seat (17), and the valve seat (17) forms the The valve cavity (10); the moving iron core (31) is installed in the coil assembly bracket (16), and the tetrafluoro valve stem (21) is fixed on the front end of the moving iron core (31) and extends into the valve seat (17 ); the valve cavity (10) is composed of the first cavity (101) and the second cavity (102). 6. The digestion solenoid valve according to claim 5, characterized in that: the tetrafluoro isolation plate (22) is installed between the first cavity (101) and the second cavity (102), and is in close contact with The inner wall of the second cavity (102) and the end wall of the valve seat (17); a tetrafluoro isolation plate sealing ring (221) is arranged between the tetrafluoro isolation plate (22) and the tetrafluoro valve stem (21). 7. The digestion solenoid valve according to claim 2, characterized in that: the first passage (11) and the second passage (12) communicate through the first cavity (101); the tetrafluoro valve stem (21) acts on the outlet end of the valve cavity (10), and a tetrafluoro valve stem sealing ring (23) is arranged on the top of the tetrafluoro valve stem (21). 8. The digestion solenoid valve according to claim 2, characterized in that: one end of the recovery spring (32) is connected to the end of the moving iron core (31), and the other end is supported on the inner end of the magnetic-absolute tube assembly (26) wall. 9. The digestion solenoid valve according to claim 1, characterized in that: the solenoid valve body (1) is also provided with an electrical connection part (13), and an external power line is provided on the electrical connection part (13).