CN111894930B - Electromagnetic bypass valve and using method thereof - Google Patents
Electromagnetic bypass valve and using method thereof Download PDFInfo
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- CN111894930B CN111894930B CN202010814940.XA CN202010814940A CN111894930B CN 111894930 B CN111894930 B CN 111894930B CN 202010814940 A CN202010814940 A CN 202010814940A CN 111894930 B CN111894930 B CN 111894930B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
Abstract
The invention provides an electromagnetic bypass valve and a using method thereof, wherein the electromagnetic bypass valve comprises: the device comprises a valve seat, a push rod, a steel ball, a push rod, a guide sleeve, a valve sleeve, a sealing plug, a spring, an armature, an outer valve sleeve, a flux sleeve, a communicating inclined tube and an electromagnetic coil; when external force is not applied, the push rod drives the steel ball to move upwards under the action of the elastic force of the spring, so that the steel ball leaves the central hole of the valve sleeve and is embedded into the through hole of the guide sleeve; when the valve is subjected to downward external force, the elastic force of the spring is overcome, and the steel ball moves downwards, further leaves the guide sleeve through hole and is tightly embedded into the valve sleeve central hole. The electromagnetic bypass valve is mainly applied to the field of load-sensitive multi-way valves, has the characteristics of high working reliability, compact structure, small space and lower cost, and saves the installation space.
Description
Technical Field
The invention relates to an electromagnetic bypass valve, in particular to an electromagnetic bypass valve and a using method thereof.
Background
The load-sensitive multi-way valve is a control center of a hydraulic system, is a core element of the hydraulic system, is positioned between a pump and an actuating element, and is used for controlling the flow rate of hydraulic oil and the conduction and closing state, thereby intensively controlling the movement direction and speed of the actuating element of the engineering machinery. The working reliability of the load-sensitive multi-way valve directly influences the controllability and comfort of the whole system.
The core device of the load sensitive multi-way valve is an electromagnetic bypass valve, and the reliability of the load sensitive multi-way valve is directly influenced by the working reliability of the electromagnetic bypass valve. In the prior art, the working reliability of the electromagnetic bypass valve for the load-sensitive multi-way valve is difficult to meet the use requirement.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the electromagnetic bypass valve and the use method thereof, which can effectively solve the problems.
The technical scheme adopted by the invention is as follows:
the present invention provides an electromagnetic bypass valve, including: the device comprises a valve seat 1, a push rod 2, a steel ball 3, a push rod 4, a guide sleeve 5, a valve sleeve 6, a sealing plug 7, a spring 8, an armature 11, an outer valve sleeve 12, a flux sleeve 16, a communicating inclined tube 18 and an electromagnetic coil 19;
the valve seat 1 and the outer valve sleeve 12 are fixedly connected; a central through hole 1A is formed in the center of the valve seat 1; an oil inlet hole 1B parallel to the central through hole 1A is formed in the left side of the valve seat 1; an oil outlet 1C parallel to the central through hole 1A is formed in the right side of the valve seat 1; the oil inlet hole 1B is communicated with the central through hole 1A through a transverse horizontal communicating hole 1D;
the sealing plug 7, the valve sleeve 6 and the guide sleeve 5 are sequentially arranged in the central through hole 1A from bottom to top; the sealing plug 7 and the central through hole 1A are in non-interference installation; the valve sleeve 6 and the guide sleeve 5 are arranged in an interference fit manner with the central through hole 1A; a first gap 20 is formed between the sealing plug 7 and the valve sleeve 6, and the first gap 20 is communicated with the communication hole 1D; a second gap 21 is formed between the valve sleeve 6 and the guide sleeve 5, and the second gap 21 is communicated with the oil outlet 1C through a communication inclined pipe 18;
the spring 8 is arranged in the sealing plug 7; the bottom end of the ejector rod 4 is abutted against the upper surface of the spring 8, the top end of the ejector rod 4 sequentially penetrates through the sealing plug 7 and the valve sleeve central hole 6A of the valve sleeve 6 and extends to the upper part of the valve sleeve 6, and the top end of the ejector rod 4 is connected with and provided with the steel ball 3; the aperture of the valve sleeve central hole 6A is smaller than or equal to the diameter of the steel ball 3; a plurality of oil passing holes 6B are uniformly formed in the circumferential direction of the valve sleeve 6; the bottom end of each oil passing hole 6B is communicated with the first clearance 20; the top end of each oil passing hole 6B is communicated with the upper part of the valve sleeve central hole 6A;
a guide sleeve through hole 5A is formed in the center of the guide sleeve 5, and the aperture of the guide sleeve through hole 5A is larger than or equal to the diameter of the steel ball 3; the height of the second gap 21 between the guide sleeve 5 and the valve sleeve 6 is smaller than the diameter of the steel ball 3; when no external force is applied, under the action of the elastic force of the spring 8, the ejector rod 4 drives the steel ball 3 to move upwards, so that the steel ball 3 leaves the valve sleeve central hole 6A and enters the guide sleeve through hole 5A; when a downward external force is applied, the elastic force of the spring 8 is overcome, and the steel ball 3 moves downwards, further leaves the guide sleeve through hole 5A and is tightly embedded into the valve sleeve central hole 6A;
the push rod 2 is arranged in the hole of the guide sleeve through hole 5A; when the steel ball 3 is embedded into the guide sleeve through hole 5A, the bottom of the push rod 2 is abutted against the steel ball 3; the top of the push rod 2 extends to the upper part of the guide sleeve through hole 5A;
the armature 11 is arranged in a valve core hole of the outer valve sleeve 12, and the armature 11 is positioned right above the push rod 2; the outer wall of the armature 11 is provided with the magnetic conductive sleeve 16; an electromagnetic coil 19 is sleeved outside the armature 11; when the electromagnetic coil 19 is electrified, the electromagnetic force generated by the electromagnetic coil 19 acts on the armature 11, so that the armature 11 moves downwards, and the push rod 2 is further pushed to move downwards.
Preferably, a filter screen 9 is installed at the inlet of the oil inlet hole 1B.
Preferably, the top of the oil inlet hole 1B is higher than the height of the communication hole 1D.
Preferably, the valve seat 1 is provided with a spherical expansion plug 10; the spherical expansion plug 10 blocks the outer end of the communicating hole 1D.
Preferably, the valve seat 1 is a T-shaped valve seat, and the outer valve sleeve 12 is a U-shaped outer valve sleeve; and the main body of the T-shaped valve seat is inserted into the valve core hole of the U-shaped outer valve sleeve.
Preferably, the device further comprises a manual operation unit; the manual operation unit comprises a hand push rod 13, a sheath 14, a tower spring 15 and a retainer ring 17;
the top of the outer valve sleeve 12 is embedded with the sheath 14; the top of the hand push rod 13 is positioned in the sleeve hole of the sheath 14; the bottom of the hand push rod 13 extends into the valve core hole of the outer valve sleeve 12 through the sheath 14, so that the bottom of the hand push rod 13 is positioned above the armature 11; the retainer ring 17 and the tower spring 15 are arranged in the sheath 14, meanwhile, the tower spring 15 is sleeved outside the hand push rod 13, and the retainer ring 17 is arranged on the upper surface of the tower spring 15; the tower spring 15 applies an upward pulling force to the handle 13, so that the bottom of the handle 13 is not in contact with the top surface of the armature 11.
Preferably, the top of the armature 11 is provided with an inner groove; when the electromagnetic bypass valve is in a conducting state, the top surface of the armature 11 abuts against the top of the valve core hole of the outer valve sleeve 12, and meanwhile, the bottom of the hand push rod 13 is located in the inner groove of the armature 11.
The invention also provides a using method of the electromagnetic bypass valve, which comprises the following steps:
step 1, when the electromagnetic coil 19 is powered off and the manual operation unit is not operated, the ejector rod 4 is jacked up under the action of the elastic force of the spring 8, and the steel ball 3 is jacked up through the ejector rod 4, so that the steel ball 3 is separated from a valve sleeve central hole 6A of the valve sleeve 6;
at this time, the electromagnetic bypass valve is in a conducting state, and the liquid flow path is: the liquid enters the oil inlet hole 1B through the filtering action of the filter screen 9 and then enters the first gap 20 between the sealing plug 7 and the valve sleeve 6 through the transverse horizontal communicating hole 1D; then flows through the oil passing hole 6B of the valve sleeve 6 from bottom to top and finally flows out of the top of the valve sleeve central hole 6A of the valve sleeve 6; the liquid flowing out from the top of the valve sleeve central hole 6A enters the second gap 21 between the guide sleeve 5 and the valve sleeve 6, then flows into the communication inclined pipe 18 from the second gap 21, and finally flows out from the oil outlet hole 1C;
energizing the electromagnetic coil 19, the electromagnetic force generated by the electromagnetic coil 19 acts on the armature 11, thereby moving the armature 11 downward;
when the armature 11 moves downwards, the push rod 2 is pushed to move downwards; when the push rod 2 moves downwards, the steel ball 3 is pushed to move downwards, so that the steel ball 3 is separated from the guide sleeve through hole 5A of the guide sleeve 5, the steel ball 3 is tightly pressed into the central through hole 1A of the valve seat 1, and the passage between the central through hole 1A of the valve seat 1 and the second gap 21 is cut off, so that a liquid passage is cut off;
the hand push rod 13 is manually pressed downwards, and when the hand push rod 13 moves downwards, the armature 11 is pushed to move downwards;
when the armature 11 moves downwards, the push rod 2 is pushed to move downwards; when the push rod 2 moves downwards, the steel ball 3 is pushed to move downwards, so that the steel ball 3 is separated from the guide sleeve through hole 5A of the guide sleeve 5, the steel ball 3 is tightly pressed into the central through hole 1A of the valve seat 1, and the passage between the central through hole 1A of the valve seat 1 and the second gap 21 is cut off, so that a liquid passage is cut off.
The electromagnetic bypass valve and the use method thereof provided by the invention have the following advantages:
the electromagnetic bypass valve is mainly applied to the field of load-sensitive multi-way valves, has the characteristics of high working reliability, compact structure, small space and lower cost, and saves the installation space.
Drawings
FIG. 1 is a schematic structural diagram of a solenoid by-pass valve provided by the present invention;
FIG. 2 is a block diagram of a valve seat and an upper valve seat assembly provided by the present invention;
fig. 3 is a bottom view of the valve sleeve provided by the present invention;
fig. 4 is a top view of the valve sleeve provided by the present invention;
FIG. 5 is a perspective view of a guide sleeve provided by the present invention;
FIG. 6 is a perspective view of a solenoid by-pass valve provided by the present invention;
FIG. 7 is a diagram of a conducting unloading state of the electromagnetic bypass valve provided by the present invention;
FIG. 8 is an electrically energized closed state diagram of the solenoid by-pass valve provided by the present invention;
FIG. 9 is a manual close-up state diagram of the electromagnetic by-pass valve provided by the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The present invention provides an electromagnetic by-pass valve, referring to fig. 1, comprising: the device comprises a valve seat 1, a push rod 2, a steel ball 3, a push rod 4, a guide sleeve 5, a valve sleeve 6, a sealing plug 7, a spring 8, an armature 11, an outer valve sleeve 12, a flux sleeve 16, a communicating inclined tube 18 and an electromagnetic coil 19;
the valve seat 1 is fixedly connected with the outer valve sleeve 12;
referring to fig. 2, a central through hole 1A is formed in the center of the valve seat 1; an oil inlet hole 1B parallel to the central through hole 1A is formed in the left side of the valve seat 1; an oil outlet 1C parallel to the central through hole 1A is formed in the right side of the valve seat 1; the oil inlet hole 1B is communicated with the central through hole 1A through a transverse horizontal communicating hole 1D; wherein, the inlet position of the oil inlet hole 1B is provided with a filter screen 9. The top of the oil inlet hole 1B is higher than the height of the communicating hole 1D. The valve seat 1 is provided with a spherical expansion plug 10; the spherical expansion plug 10 blocks the outer end of the intercommunicating pore 1D.
A sealing plug 7, a valve sleeve 6 and a guide sleeve 5 are sequentially arranged in the central through hole 1A from bottom to top; wherein, the sealing plug 7 and the central through hole 1A are in non-interference installation; the valve sleeve 6 and the guide sleeve 5 are arranged in an interference fit manner with the central through hole 1A; a first gap 20 is formed between the sealing plug 7 and the valve sleeve 6, and the first gap 20 is communicated with the communication hole 1D; a second gap 21 is formed between the valve sleeve 6 and the guide sleeve 5, and the second gap 21 is communicated with the oil outlet 1C through a communication inclined pipe 18;
a spring 8 is arranged in the sealing plug 7; the bottom end of the ejector rod 4 is abutted against the upper surface of the spring 8, the top end of the ejector rod 4 sequentially penetrates through the sealing plug 7 and the valve sleeve central hole 6A of the valve sleeve 6 to extend to the upper part of the valve sleeve 6, and the top end of the ejector rod 4 is connected with the steel ball 3; referring to fig. 3 and 4, a block diagram of the valve housing is shown; wherein, the aperture of the valve sleeve central hole 6A is less than or equal to the diameter of the steel ball 3; a plurality of oil passing holes 6B are uniformly formed in the circumferential direction of the valve sleeve 6; the bottom end of each oil passing hole 6B is communicated with the first clearance 20; the top end of each oil passing hole 6B is communicated with the upper part of the valve sleeve central hole 6A;
referring to fig. 5, a guide sleeve through hole 5A is formed in the center of the guide sleeve 5, and the diameter of the guide sleeve through hole 5A is larger than or equal to the diameter of the steel ball 3; the height of a second gap 21 between the guide sleeve 5 and the valve sleeve 6 is smaller than the diameter of the steel ball 3; when external force is not applied, under the action of the elastic force of the spring 8, the ejector rod 4 drives the steel ball 3 to move upwards, so that the steel ball 3 leaves the central hole 6A of the valve sleeve and enters the through hole 5A of the guide sleeve; when a downward external force is applied, the steel ball 3 overcomes the elasticity of the spring 8 and moves downwards, so that the steel ball leaves the through hole 5A of the guide sleeve and is tightly embedded into the central hole 6A of the valve sleeve;
a push rod 2 is arranged in a hole of the guide sleeve through hole 5A; when the steel ball 3 is embedded into the through hole 5A of the guide sleeve, the bottom of the push rod 2 is abutted against the steel ball 3; the top of the push rod 2 extends to the upper part of the through hole 5A of the guide sleeve;
the armature 11 is arranged in a valve core hole of the outer valve sleeve 12, and the armature 11 is positioned right above the push rod 2; the outer wall of the armature 11 is provided with a magnetic conductive sleeve 16; an electromagnetic coil 19 is sleeved outside the armature 11; when the electromagnetic coil 19 is electrified, the electromagnetic force generated by the electromagnetic coil 19 acts on the armature 11, so that the armature 11 moves downwards, and the push rod 2 is pushed to move downwards.
The valve seat 1 is a T-shaped valve seat, and the outer valve sleeve 12 is a U-shaped outer valve sleeve; the main body of the T-shaped valve seat is inserted into the valve core hole of the U-shaped outer valve sleeve.
The manual operation unit is also included; the manual operation unit comprises a hand push rod 13, a sheath 14, a tower spring 15 and a retainer ring 17;
the top of the outer valve sleeve 12 is embedded into the mounting sheath 14; the top of the hand push rod 13 is positioned in the sleeve hole of the sheath 14; the bottom of the handspike 13 extends into the valve core hole of the outer valve sleeve 12 through the sheath 14, so that the bottom of the handspike 13 is positioned above the armature 11; a retainer ring 17 and a tower spring 15 are arranged in the sheath 14, meanwhile, the tower spring 15 is sleeved outside the hand push rod 13, and the retainer ring 17 is arranged on the tower spring 15; the tower spring 15 applies an upward pulling force to the handle bar 13, thereby keeping the bottom of the handle bar 13 out of contact with the top surface of the armature 11.
An inner groove is formed in the top of the armature 11; when the electromagnetic bypass valve is in a conducting state, the top surface of the armature 11 abuts against the top of the valve core hole of the outer valve sleeve 12, and meanwhile, the bottom of the hand push rod 13 is located in the inner groove of the armature 11.
The invention also provides a using method of the electromagnetic bypass valve, which comprises the following steps:
step 1, when the electromagnetic coil 19 is powered off and the manual operation unit is not operated, the ejector rod 4 is jacked up under the action of the elastic force of the spring 8, and the steel ball 3 is jacked up through the ejector rod 4, so that the steel ball 3 is separated from a valve sleeve central hole 6A of the valve sleeve 6;
at this time, the electromagnetic bypass valve is in the on state, that is, the state shown in fig. 7, and the liquid flow path is: the liquid enters the oil inlet hole 1B through the filtering action of the filter screen 9 and then enters the first gap 20 between the sealing plug 7 and the valve sleeve 6 through the transverse horizontal communicating hole 1D; then flows through the oil passing hole 6B of the valve sleeve 6 from bottom to top and finally flows out of the top of the valve sleeve central hole 6A of the valve sleeve 6; the liquid flowing out from the top of the valve sleeve central hole 6A enters the second gap 21 between the guide sleeve 5 and the valve sleeve 6, then flows into the communication inclined pipe 18 from the second gap 21, and finally flows out from the oil outlet hole 1C;
energizing the electromagnetic coil 19, the electromagnetic force generated by the electromagnetic coil 19 acts on the armature 11, thereby moving the armature 11 downward;
when the armature 11 moves downwards, the push rod 2 is pushed to move downwards; when the push rod 2 moves downwards, the steel ball 3 is pushed to move downwards, so that the steel ball 3 is separated from the guide sleeve through hole 5A of the guide sleeve 5, the steel ball 3 is tightly pressed into the central through hole 1A of the valve seat 1, and the passage between the central through hole 1A of the valve seat 1 and the second gap 21 is cut off, so that a liquid passage is cut off; this time, the state shown in fig. 8;
the hand push rod 13 is manually pressed downwards, and when the hand push rod 13 moves downwards, the armature 11 is pushed to move downwards;
when the armature 11 moves downwards, the push rod 2 is pushed to move downwards; when the push rod 2 moves downwards, the steel ball 3 is pushed to move downwards, so that the steel ball 3 is separated from the guide sleeve through hole 5A of the guide sleeve 5, the steel ball 3 is tightly pressed into the central through hole 1A of the valve seat 1, and the passage between the central through hole 1A of the valve seat 1 and the second gap 21 is cut off, so that a liquid passage is cut off. This time, the state shown in fig. 9;
the electromagnetic bypass valve provided by the invention has the following characteristics:
(1) central through-hole 1A is seted up at the center of disk seat 1 to main part that will influence the electromagnetic bypass valve reliability all sets up inside central through-hole 1A, includes: a sealing plug 7, a spring 8 and a mandril 4; and inlet port 1B and oil outlet 1C are located central through-hole 1A's both sides respectively, and not with central through-hole 1A coaxial setting, the advantage of this kind of setting is: the liquid enters the central through hole 1A after the pressure of the liquid is reduced through the oil inlet hole 1B and the communicating hole 1D, so that the impact force of the liquid on the sealing plug 7, the spring 8 and the ejector rod 4 is reduced, and the service reliability and the service life of the electromagnetic bypass valve are prolonged;
in addition, as can be seen from fig. 1, the top position of the oil inlet 1B is higher than that of the communication hole 1D, so that the liquid is depressurized through the oil inlet 1B and then flows into the central through hole 1A through the communication hole 1D, and the pressure of the liquid entering the central through hole 1A can be more effectively reduced.
(2) After entering the first gap 20, the liquid flows through the oil passing hole 6B of the valve sleeve 6 from bottom to top, and the flowing pressure of the liquid can be further reduced in the process, so that the impact force of the liquid on the steel ball 3 is reduced, the problem that the steel ball 3 is not tightly sealed due to impact abrasion is solved, and the use reliability of the electromagnetic bypass valve is improved;
(3) when the electromagnetic bypass valve is in the open state, the liquid flows out of the valve housing 6, flows into the communicating inclined tube 18 through the second gap, and flows out through the oil outlet hole 1C. The advantages of this arrangement are: since the reliability of the solenoid operated bypass valve is not affected after the fluid flows out of the valve housing 6, the fluid can quickly flow out through the communication inclined tube 18 from top to bottom by providing the communication inclined tube 18, and therefore, when the solenoid operated bypass valve is in an open state, the design of the solenoid operated bypass valve does not generate resistance to the flow of the fluid, and the fluid can smoothly pass through the solenoid operated bypass valve.
(4) The valve seat 1 is a T-shaped valve seat, and the outer valve sleeve 12 is a U-shaped outer valve sleeve; the main body of the T-shaped valve seat is inserted into the valve core hole of the U-shaped outer valve sleeve.
By adopting the design, the occupied volume of the electromagnetic bypass valve can be effectively reduced, and the electromagnetic bypass valve is very suitable for being applied to occasions with limited space.
(5) An inner groove is formed in the top of the armature 11; when the electromagnetic bypass valve is in a conducting state, the top surface of the armature 11 abuts against the top of the valve core hole of the outer valve sleeve 12, and meanwhile, the bottom of the hand push rod 13 is located in the inner groove of the armature 11.
By adopting the design, the space of the valve core hole of the outer valve sleeve 12 can be fully utilized, and the occupied volume of the electromagnetic bypass valve is reduced.
Therefore, the invention provides an electromagnetic bypass valve, which has the following advantages:
the electromagnetic bypass valve is mainly applied to the field of load-sensitive multi-way valves, has the characteristics of high working reliability, compact structure, small space and lower cost, and saves the installation space.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements should also be considered within the scope of the present invention.
Claims (8)
1. An electromagnetic by-pass valve, comprising: the device comprises a valve seat (1), a push rod (2), a steel ball (3), a push rod (4), a guide sleeve (5), a valve sleeve (6), a sealing plug (7), a spring (8), an armature (11), an outer valve sleeve (12), a magnetic conductive sleeve (16), a communicating inclined tube (18) and an electromagnetic coil (19);
the valve seat (1) is fixedly connected with the outer valve sleeve (12); a central through hole (1A) is formed in the center of the valve seat (1); an oil inlet hole (1B) parallel to the central through hole (1A) is formed in the left side of the valve seat (1); an oil outlet (1C) parallel to the central through hole (1A) is formed in the right side of the valve seat (1); the oil inlet hole (1B) is communicated with the central through hole (1A) through a transverse horizontal communicating hole (1D);
the sealing plug (7), the valve sleeve (6) and the guide sleeve (5) are sequentially arranged in the central through hole (1A) from bottom to top; the sealing plug (7) and the central through hole (1A) are in non-interference installation; the valve sleeve (6) and the guide sleeve (5) are arranged in an interference fit manner with the central through hole (1A); a first gap (20) is formed between the sealing plug (7) and the valve sleeve (6), and the first gap (20) is communicated with the communication hole (1D); a second gap (21) is formed between the valve sleeve (6) and the guide sleeve (5), and the second gap (21) is communicated with the oil outlet (1C) through a communication inclined pipe (18);
the spring (8) is arranged in the sealing plug (7); the bottom end of the ejector rod (4) is abutted against the upper surface of the spring (8), the top end of the ejector rod (4) sequentially penetrates through the sealing plug (7) and a valve sleeve central hole (6A) of the valve sleeve (6) and extends to the upper part of the valve sleeve (6), and the top end of the ejector rod (4) is connected with and provided with the steel ball (3); the aperture of the valve sleeve central hole (6A) is smaller than or equal to the diameter of the steel ball (3); a plurality of oil passing holes (6B) are uniformly formed in the circumferential direction of the valve sleeve (6); the bottom end of each oil passing hole (6B) is communicated with the first clearance (20); the top end of each oil passing hole (6B) is communicated with the upper part of the valve sleeve central hole (6A);
a guide sleeve through hole (5A) is formed in the center of the guide sleeve (5), and the aperture of the guide sleeve through hole (5A) is larger than or equal to the diameter of the steel ball (3); the height of the second gap (21) between the guide sleeve (5) and the valve sleeve (6) is smaller than the diameter of the steel ball (3); when external force is not applied, under the action of the elastic force of the spring (8), the push rod (4) drives the steel ball (3) to move upwards, so that the steel ball (3) leaves the valve sleeve central hole (6A) and enters the guide sleeve through hole (5A); when a downward external force is applied, the steel ball (3) overcomes the elastic force of the spring (8) and moves downwards to leave the guide sleeve through hole (5A) and be tightly embedded into the valve sleeve central hole (6A);
the push rod (2) is arranged in a hole of the guide sleeve through hole (5A); when the steel ball (3) is embedded into the guide sleeve through hole (5A), the bottom of the push rod (2) is abutted against the steel ball (3); the top of the push rod (2) extends to the upper part of the guide sleeve through hole (5A);
the armature (11) is arranged in a valve core hole of the outer valve sleeve (12), and the armature (11) is positioned right above the push rod (2); the outer wall of the armature iron (11) is provided with the magnetic sleeve (16); an electromagnetic coil (19) is sleeved outside the armature iron (11); when the electromagnetic coil (19) is electrified, the electromagnetic force generated by the electromagnetic coil (19) acts on the armature (11), so that the armature (11) moves downwards, and the push rod (2) is further pushed to move downwards.
2. The electromagnetic by-pass valve according to claim 1, characterized in that a filter screen (9) is installed at the inlet position of the oil inlet hole (1B).
3. The electromagnetic by-pass valve according to claim 1, characterized in that the top of the oil inlet hole (1B) is higher than the height of the communication hole (1D).
4. The electromagnetic by-pass valve according to claim 1, characterized in that the valve seat (1) is fitted with a spherical plug (10); the spherical expansion plug (10) blocks the outer end of the communicating hole (1D).
5. The electromagnetic by-pass valve according to claim 1, characterized in that said valve seat (1) is a T-shaped valve seat and said outer valve sleeve (12) is a U-shaped outer valve sleeve; and the main body of the T-shaped valve seat is inserted into the valve core hole of the U-shaped outer valve sleeve.
6. The electromagnetic by-pass valve according to claim 1, characterized by further comprising a manual operation unit; the manual operation unit comprises a hand push rod (13), a sheath (14), a tower spring (15) and a retainer ring (17);
the top of the outer valve sleeve (12) is embedded with the sheath (14); the top of the hand push rod (13) is positioned in the sleeve hole of the sheath (14); the bottom of the hand push rod (13) penetrates through the sheath (14) and extends into the valve core hole of the outer valve sleeve (12), so that the bottom of the hand push rod (13) is positioned above the armature (11); the retainer ring (17) and the tower spring (15) are arranged in the sheath (14), meanwhile, the tower spring (15) is sleeved outside the hand push rod (13), and the retainer ring (17) is arranged on the upper surface of the tower spring (15); the tower spring (15) applies upward pulling force to the hand push rod (13), so that the bottom of the hand push rod (13) is not in contact with the top surface of the armature (11).
7. The electromagnetic by-pass valve according to claim 6, characterized in that the top of the armature (11) is provided with an inner groove; when the electromagnetic bypass valve is in a conducting state, the top surface of the armature (11) abuts against the top of the valve core hole of the outer valve sleeve (12), and meanwhile, the bottom of the hand push rod (13) is located in the inner groove of the armature (11).
8. Use of a solenoid by-pass valve according to any of claims 1 to 7 characterised by the steps of:
step 1, when an electromagnetic coil (19) is powered off and a manual operation unit is not operated, a push rod (4) is jacked up under the action of the elastic force of a spring (8), and a steel ball (3) is jacked up through the push rod (4) so that the steel ball (3) is separated from a valve sleeve central hole (6A) of a valve sleeve (6);
at this time, the electromagnetic bypass valve is in a conducting state, and the liquid flow path is: liquid enters the oil inlet hole (1B) through the filtering action of the filter screen (9) and then enters a first gap (20) between the sealing plug (7) and the valve sleeve (6) through the transverse horizontal communicating hole (1D); then flows through the oil passing hole (6B) of the valve sleeve (6) from bottom to top and finally flows out of the top of the valve sleeve central hole (6A) of the valve sleeve (6); the liquid flowing out of the top of the central hole (6A) of the valve sleeve enters a second gap (21) between the guide sleeve (5) and the valve sleeve (6), then flows into the communicating inclined tube (18) from the second gap (21), and finally flows out of the oil outlet hole (1C);
step 2, electrically operating the electromagnetic bypass valve, so that the process of closing the electromagnetic bypass valve is as follows:
energizing the electromagnetic coil (19), the armature (11) being acted upon by the electromagnetic force generated by the electromagnetic coil (19), thereby moving the armature (11) downwardly;
when the armature iron (11) moves downwards, the push rod (2) is pushed to move downwards; when the push rod (2) moves downwards, the steel ball (3) is pushed to move downwards, so that the steel ball (3) is separated from the guide sleeve through hole (5A) of the guide sleeve (5), the steel ball (3) is tightly pressed into the central through hole (1A) of the valve seat (1), and then the passage of the central through hole (1A) of the valve seat (1) and the second gap (21) is cut off, so that a liquid passage is cut off;
step 3, manually operating the electromagnetic bypass valve, so that the process of closing the electromagnetic bypass valve comprises the following steps:
manually pressing the hand push rod (13) downwards, and pushing the armature iron (11) to move downwards when the hand push rod (13) moves downwards;
when the armature iron (11) moves downwards, the push rod (2) is pushed to move downwards; when the push rod (2) moves downwards, the steel ball (3) is pushed to move downwards, so that the steel ball (3) is separated from the guide sleeve through hole (5A) of the guide sleeve (5), the steel ball (3) is tightly pressed into the central through hole (1A) of the valve seat (1), the passage of the central through hole (1A) of the valve seat (1) and the second gap (21) is cut off, and the liquid passage is cut off.
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| CN2099880U (en) * | 1991-03-28 | 1992-03-25 | 刘敬善 | Big flow capacity ball shape electromagnetic valve |
| CN2210273Y (en) * | 1994-09-23 | 1995-10-18 | 孙成文 | Wet type electromagnetic ball valve |
| CN2351631Y (en) * | 1998-08-19 | 1999-12-01 | 刘敬善 | Large-flow ball-shape electromagnetic valve |
| CN2497127Y (en) * | 2001-09-04 | 2002-06-26 | 贵州红林机械有限公司 | Ball-valve type two-position three-way switching electromagnetic valve |
| JP4186330B2 (en) * | 1999-08-27 | 2008-11-26 | 株式会社デンソー | Solenoid valve and hydraulic circuit |
| CN108005977A (en) * | 2017-11-08 | 2018-05-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of hydraulic buttery valve with temperature-monitoring function |
| CN109073107A (en) * | 2016-04-21 | 2018-12-21 | Eto电磁有限责任公司 | The valve equipment of Electromagnetically activatable |
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2020
- 2020-08-13 CN CN202010814940.XA patent/CN111894930B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2099880U (en) * | 1991-03-28 | 1992-03-25 | 刘敬善 | Big flow capacity ball shape electromagnetic valve |
| CN2210273Y (en) * | 1994-09-23 | 1995-10-18 | 孙成文 | Wet type electromagnetic ball valve |
| CN2351631Y (en) * | 1998-08-19 | 1999-12-01 | 刘敬善 | Large-flow ball-shape electromagnetic valve |
| JP4186330B2 (en) * | 1999-08-27 | 2008-11-26 | 株式会社デンソー | Solenoid valve and hydraulic circuit |
| CN2497127Y (en) * | 2001-09-04 | 2002-06-26 | 贵州红林机械有限公司 | Ball-valve type two-position three-way switching electromagnetic valve |
| CN109073107A (en) * | 2016-04-21 | 2018-12-21 | Eto电磁有限责任公司 | The valve equipment of Electromagnetically activatable |
| CN108005977A (en) * | 2017-11-08 | 2018-05-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of hydraulic buttery valve with temperature-monitoring function |
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| CN111894930A (en) | 2020-11-06 |
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